CN101637817B - Mould closing device - Google Patents

Mould closing device Download PDF

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Publication number
CN101637817B
CN101637817B CN2009101655230A CN200910165523A CN101637817B CN 101637817 B CN101637817 B CN 101637817B CN 2009101655230 A CN2009101655230 A CN 2009101655230A CN 200910165523 A CN200910165523 A CN 200910165523A CN 101637817 B CN101637817 B CN 101637817B
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China
Prior art keywords
mold closing
mould
die sinking
connecting rod
halfnut
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CN101637817A (en
Inventor
辻真
丰岛俊昭
野田三郎
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Shibaura Machine Co Ltd
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Toshiba Machine Co Ltd
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Priority claimed from JP2008195118A external-priority patent/JP5179987B2/en
Application filed by Toshiba Machine Co Ltd filed Critical Toshiba Machine Co Ltd
Publication of CN101637817A publication Critical patent/CN101637817A/en
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Abstract

The present invention provides a mould closing device which can adjust the mould thickness with a simple structure. The mould closing device (1) is provided with a mould opening/closing cylinder (13), a fixed side split nuts (23) and a control device (33), wherein, the mould opening/closing cylinder (13) is provided on a movable mould (5M) and can drive a first connecting rod (7A). The fixed side slit nuts (23) can clamp the first connecting rod (7A) and a fixed mould (5F). The control device (33) controls the mould opening/closing cylinder (13) so as to open and close the mould through driving the mould opening/closing cylinder (13) at a state that the clamping of the fixed side split nuts (23) is already performed. The position of the first connecting rod (7A) can be adjusted in the length direction of the connecting rod relatively to the fixed mould (5F).

Description

Mold closing mechanism
Technical field
The present invention relates to a kind of mold closing mechanism that is used for forming machines such as die casting machine.
Background technology
In mold closing mechanism, move the moving die plate that mobile mould is installed with respect to the fixed form that fixed die is installed, carry out the switching of fixed die and mobile mould thus.When in mould, being filled with moulding materials such as motlten metal, by the fixed die of mold closing and mobile mould so that this moulding material that is filled does not carry out matched moulds to the mode that the mould outside spills with bigger power.Through being extended, the connecting rod that is set up between the template carries out matched moulds.When fixed die and mobile mould are replaced,, therefore adjust the thick adjustment of mould of clamped position between connecting rod and the template etc. because the distance during mold closing changes.About foregoing a series of action, propose to have the thick device of various moulds.
In the mold closing mechanism of patent document 1,, have cylinder barrel and be fixed in the hydraulic cylinder that moving die plate and piston rod are fixed in connecting rod as the drive unit that is used for the die sinking mold closing.Through fixed connecting rod on fixed form and drive hydraulic cylinder, thus, this mold closing mechanism moves moving die plate along die sinking mold closing direction relative fixed template.
In the mold closing mechanism of patent document 2, except the hydraulic cylinder that is used for the die sinking mold closing and the hydraulic cylinder that is used for matched moulds, also have the molding pressure adjustment and use hydraulic cylinder.Carry out the thick adjustment of mould through following mode, promptly utilize the molding pressure adjustment to change position, thereby change the clamped position between moving die plate and the connecting rod with respect to the connecting rod of moving die plate with hydraulic cylinder.
Patent document 1: (Japan) spy opens the 2005-144802 communique
Patent document 2: (Japan) spy opens flat 8-276482 communique
The thick adjustment of not mentioned mould in patent document 1.In addition, in the technology of patent document 2, be provided with the hydraulic cylinder different just to carrying out the thick adjustment of mould, thereby cause mold closing mechanism complicated with the hydraulic cylinder that is used for die sinking mold closing or matched moulds.
Summary of the invention
Therefore, the expectation provide a kind of can be with the thick mold closing mechanism of simple structural adjustment mould.
Mold closing mechanism of the present invention has: fixed form, and it keeps fixed die; Moving die plate, it keeps moving mould and on die sinking mold closing direction, can moving relative to said fixed form; Connecting rod, it extends on said die sinking mold closing direction and can run through said fixed form and said moving die plate; First holding section, it can engage a template in said fixed form and the said moving die plate with said connecting rod; Die sinking mold closing drive unit, it has fixed part and movable part, and this fixed part is located on another template in said fixed form and the said moving die plate, and this movable part this fixed part and said connecting rod relatively together drives towards die sinking mold closing direction; And control device, it can control said die sinking mold closing drive unit, so that under the state of the engaging of carrying out said first holding section, carries out the die sinking mold closing through driving said die sinking mold closing drive unit; Said connecting rod can a said relatively template or said movable part adjustment position on the length direction of said connecting rod.
Can be thick according to the present invention with simple structural adjustment mould.
Description of drawings
Fig. 1 is with die opening state and with the figure of the mold closing mechanism of the thick expression first embodiment of the invention of maximum norm;
Fig. 2 is that expression is from the state of Fig. 1 figure to the state midway of mold closing state transitions;
Fig. 3 is the figure of expression from the state of state after the mould contact condition shifts of Fig. 2;
Fig. 4 is the figure of the action of mold closing mechanism in forming period of key diagram 1;
Fig. 5 is the thick mould of minimum modulus is carried out the figure of the mold closing mechanism of the STA representation Fig. 1 in the thick adjustment of mould;
Fig. 6 is the figure of the subsequent scenario of presentation graphs 5;
Fig. 7 is the figure of the subsequent scenario of presentation graphs 6;
Fig. 8 is the figure of the subsequent scenario of presentation graphs 7;
Fig. 9 is the flow chart of the thick adjustment of mould of key diagram 5 to Fig. 8;
Figure 10 is the figure with the mold closing mechanism of the STA representation second embodiment of the invention midway of die change;
Figure 11 is the figure that extracts the mold closing mechanism of STA representation Figure 10 with connecting rod;
Figure 12 is with die opening state and with the figure of the mold closing mechanism of the thick expression third embodiment of the invention of maximum norm;
Figure 13 is that expression is from the state of Figure 12 figure to the state midway of mold closing state transitions;
Figure 14 is the figure of the action of mold closing mechanism in forming period of explanation Figure 12;
Figure 15 is the thick mould of minimum modulus is carried out the figure of the mold closing mechanism of the STA representation Figure 12 in the thick adjustment of mould;
Figure 16 is the figure of the subsequent scenario of expression Figure 15;
Figure 17 is the flow chart of the thick adjustment of mould of explanation Figure 15 and Figure 16;
Figure 18 is the figure with the mold closing mechanism of the STA representation four embodiment of the invention midway of die change;
Figure 19 is with die opening state and with the figure of the mold closing mechanism of the thick expression fifth embodiment of the invention of maximum norm;
Figure 20 is that expression is from the state of Figure 19 figure to the state midway of mold closing state transitions;
Figure 21 is the figure of expression from the state of state after the mould contact condition shifts of Figure 20;
Figure 22 is the thick mould of minimum modulus is carried out the figure of the mold closing mechanism of the STA representation Figure 19 in the thick adjustment of mould;
Figure 23 is the figure of the subsequent scenario of expression Figure 22;
Figure 24 is the figure of the subsequent scenario of expression Figure 23;
Figure 25 is the thick adjustment result's of mould of explanation Figure 22 to Figure 24 figure;
Figure 26 is the flow chart of the thick adjustment of mould of explanation Figure 22 to Figure 24;
Figure 27 is the mold closing mechanism of expression sixth embodiment of the invention.
Description of reference numerals
1 mold closing mechanism; The 5F fixed form; The 5M moving die plate; The 7A head rod; 13 die sinking mold closing cylinders (die sinking mold closing drive unit); 23 fixation side halfnuts; 27A first moves the side halfnut; 33 control device; 101F fixed mould (fixed die); 101M move moulds (move mould).
The specific embodiment
Below, a plurality of embodiment of the present invention is described.Structure shared or roughly the same between a plurality of embodiments is marked same Reference numeral and omits explanation.Below the related claim item of a plurality of embodiments following:
First and second embodiment: claim 1,2,4,6～9
The the 3rd and the 4th embodiment: claim 1,2,5,6～9
The the 5th and the 6th embodiment: claim 1,3,4,6～9
(first embodiment)
Fig. 1 is the side view of the mold closing mechanism 1 of expression first embodiment of the invention, comprises profile in the part.In Fig. 1, not only express the die opening state of mold closing mechanism 1, and express the state that the thick mould of maximum norm is installed.
Mold closing mechanism 1 has: base 3, be fixed on fixed form 5F on the base 3, on the base 3 movably moving die plate 5M and be erected at fixed form 5F and moving die plate 5M between the head rod 7A and the second connecting rod 7B.Below, sometimes fixed form 5F and moving die plate 5M are abbreviated as " template 5 " and do not distinguish the two.In addition, sometimes the head rod 7A and the second connecting rod 7B are abbreviated as " connecting rod 7 " and do not distinguish the two below.
Fixed form 5F maintains fixed mould 101F.Moving die plate 5M maintains the 101M that moves moulds.Below, sometimes the fixed mould 101F and the 101M that moves moulds are abbreviated as " mould 101 " and do not distinguish the two.Two templates 5 are opposite each other.Below, will be called rear side with the opposite side of the face that mould 101 is installed (mould installed surface) of template 5 sometimes.
Moving die plate 5M for example places the slide 9 that is located on the base 3 through carrying, and moves thereby can go up in direction (die sinking mold closing direction, the i.e. left and right directions of the paper of Fig. 1) approaching with respect to fixed form 5F or that leave.Through moving die plate 5M is moved towards die sinking mold closing direction, thus, mould 101 carries out the die sinking mold closing.On base 3, be fixed with positioning element 11, from the rear side butt, restriction moving die plate 5M is towards the driving stage extreme position of die sinking direction with respect to moving die plate 5M for this positioning element 11.
Connecting rod 7 extends on die sinking mold closing direction.The section of connecting rod 7 for example is circular.Connecting rod 7 for example is provided with four, sees from die sinking mold closing direction, roughly is configured in left and right directions and above-below direction symmetrically with respect to mould 101.On diagonal, be respectively equipped with two the head rod 7A and the second connecting rod 7B.That is, as shown in Figure 1, mold closing mechanism 1 also has head rod 7A that constitutes the bottom connecting rod and the second connecting rod 7B that constitutes the top connecting rod except having head rod 7A that constitutes the top connecting rod and the second connecting rod 7B that constitutes the bottom connecting rod.
Mold closing mechanism 1 has die sinking mold closing cylinder 13, and this die sinking mold closing cylinder 13 produces the driving force that moving die plate 5M is driven towards die sinking mold closing direction.Die sinking mold closing cylinder 13 is made up of hydraulic cylinder, and it has: cylinder barrel 13a, the piston rod 13c that is accommodated in the piston 13b of cylinder barrel 13a and is fixed in piston 13b and stretches out from cylinder barrel 13a.Cylinder barrel 13a is fixed in moving die plate 5M.Piston 13b can slide with stroke S in cylinder barrel 13a.Piston rod 13c is fixed on the end of head rod 7A via attaching parts 15.Therefore, head rod 7A is being sticked under the state of fixed form 5F, when driving die sinking mold closing cylinder 13, when head rod 7A and moving die plate 5M were relatively moved, moving die plate 5M moved towards die sinking mold closing direction with respect to fixed form 5F.
Mold closing mechanism 1 has closing cylinder 17, and this closing cylinder 17 produces the mold clamping force that makes mould 101 matched moulds.Closing cylinder 17 is hydraulic cylinders, and this hydraulic cylinder is made up of cylinder chamber 19 and a part of piston elements 21 that are incorporated in the cylinder chamber 19 be located on the fixed form 5F.Constitute cylinder chamber 19 through enlarging the diameter of a part that connecting rod 7 runs through the through hole of fixed form 5F.Piston element 21 has: insert and to be connected with connecting rod 7 and to insert cylindric part of leading in the through hole of fixed form 5F and the diameter that enlarges this cylindric part and form and be incorporated in the piston 21a in the cylinder chamber 19.Piston 21a is separated into two cylinder chambers with cylinder chamber 19 on die sinking mold closing direction.To the indoor supply hydraulic oil of two cylinders that is separated, thus, piston 21a slides in cylinder chamber 19 through selectively.Therefore, in mould contact (with reference to Fig. 3) and make under connecting rod 7 and the state that moving die plate 5M and piston element 21 engage, when so that the mode that piston element 21 moves towards the rear side of fixed form 5F when driving closing cylinder 17, connecting rod 7 extends.So, mould 101 is applied the power corresponding to elongation.
As stated, connecting rod 7 is used for the die sinking mold closing through engaging with fixed form 5F (strictness is a piston element 21), is used for matched moulds through engaging with piston 21a (strictness is a piston element 21) and moving die plate 5M.Mold closing mechanism 1 has: make 21 engagings of head rod 7A and piston element fixation side halfnut 23, make the second connecting rod 7B and piston element 21 engagings trimmer 25, make first of head rod 7A and moving die plate 5M engaging move side halfnut 27A and make the second connecting rod 7B and moving die plate 5M engaging second move side halfnut 27B.Below, move side halfnut 27A and second with first sometimes and move side halfnut 27B and abbreviate " move side halfnut 27 " as and do not distinguish the two.
Fixation side halfnut 23 engages with piston element 21 on die sinking mold closing direction, thereby can together move towards die sinking mold closing direction with piston element 21.In addition, through opening and closing, fixation side halfnut 23 can be fastened on the fixation side that is formed at head rod 7A end and is stuck on the 7a of portion thus.Inner peripheral surface and fixation side at fixation side halfnut 23 are stuck on the outer peripheral face of the 7a of portion, are formed with a plurality of endless grooves of arranging along the length direction of head rod 7A respectively, and fixation side halfnut 23 and fixation side are stuck the 7a of portion and engage through engagement.A plurality of endless grooves can be separate, also can be thread groove shape ground and form continuously.
Prominent bar between a plurality of endless grooves of a plurality of endless grooves of a side and opposite side (prominent bar) is when being positioned at same position on the length direction of head rod 7A, fixation side halfnut 23 is stuck the 7a of portion engagement with fixation side.Therefore, fixation side halfnut 23 and fixation side are stuck the engagement adjustment of the relative position on the length direction that the 7a of portion has to adjust head rod 7A.The engagement adjustment can be carried out through relatively moving below the spacing (the spacing P of a plurality of endless grooves).
Compare with the configuration scope of a plurality of endless grooves of fixation side halfnut 23, fixation side is stuck the configuration scope of a plurality of endless grooves of the 7a of portion and sets more longways.Therefore, fixation side halfnut 23 and fixation side are stuck the 7a of portion and can in the big scope of the adjusting range (spacing) more required than the engagement adjustment, the clamped position between head rod 7A and the piston 21 (fixed form 5F, piston 21a) be adjusted.That is, but fixation side halfnut 23 is stuck the 7a of portion with fixation side can engage selectively at a plurality of clamped positions.
Trimmer 25 is sandwiched in the end of piston element 21 and is located between the flange 7f of the second connecting rod 7B end, and is fixed on piston element 21 and the flange 7f through screw etc.When needs were adjusted the second connecting rod 7B with respect to the position of piston element 21 at the second connecting rod 7B length direction, trimmer 25 was replaced with other different trimmers 25 of thickness (size of the second connecting rod 7B length direction).
Move side halfnut 27 and on die sinking mold closing direction, engage, can together move with moving die plate 5M towards die sinking mold closing direction with moving die plate 5M.On connecting rod 7, be formed with the mobile side that engages with mobile side halfnut 27 and be stuck the 7b of portion.The structure that mobile side halfnut 27 and mobile side are stuck the 7b of portion is identical with the structure that fixation side halfnut 23 and fixation side are stuck the 7a of portion, omits explanation.The spacing of a plurality of endless grooves can be identical in mobile side and fixation side, also can be different.
Fixation side halfnut 23 and mobile side halfnut 27 engage with cylinder 35 through nut or throw off.Nut is hydraulic cylinders with cylinder 35.Fixation side halfnut 23 and mobile side halfnut 27 also can drive through other drive units such as motor.
Mold closing mechanism 1 has position sensor 29, hydraulic circuit 31 and control device 33; Wherein position sensor 29 detects piston element 21 with respect to the position of fixed form 5F on connecting rod 7 length directions; Hydraulic circuit 31 is supplied with hydraulic oil to various cylinders, the action of control device 33 control hydraulic circuits.
Position sensor 29 for example constitutes electromagnetic type or optical profile type linear encoder; Export the pulse signal that relatively moves that is accompanied by piston element 21 to control device 33, perhaps comprise the signal of the information such as position of the piston element 21 that obtains based on this pulse signal computing to control device 33 outputs.
Hydraulic circuit 31 constitutes and for example comprises pump, executing agency, various valves etc., and its control is supplied with working solution to die sinking mold closing cylinder 13, closing cylinder 17 and nut with cylinder 35.
Control device 33 for example is made up of the computer that comprises CPU, ROM, RAM, external memory etc.Control device 33 is based on the program that is stored in ROM or external memory etc. or from the signal of position sensor 29 etc., via cylinder such as mold closing such as die sinking such as control such as hydraulic circuit 31 grades 13, closing cylinder 17, fixation side halfnut 23 and move side halfnut 27.
Explanation has the action of the mold closing mechanism 1 of above formation below.The action of mold closing mechanism 1 in forming period at first is described.
Fig. 2 is the side view of expression mold closing mechanism 1 from the state transitions of Fig. 1 to the state midway of mold closing state (mould contact condition), comprises profile in the part.Fig. 3 is the side view of the mould contact condition of expression mold closing mechanism 1, comprises profile in the part.Fig. 4 is the figure that comprises the flow chart that the action in forming period describes to mold closing mechanism 1.The flow chart in the paper left side of Fig. 4 illustrates the action of mold closing mechanism 1, and the form on paper right side is expressed the action of die sinking mold closing cylinder 13 in each step, closing cylinder 17, mobile side halfnut 27 and fixation side halfnut 23.In form, it is identical with the last stage that arrow is up represented.
When the cycle began, mold closing mechanism 1 was in die opening state as shown in Figure 1.Under this state, the piston 13b of die sinking mold closing cylinder 13 is positioned at head end HEP, promptly when the driving stage extreme position of moving die plate 5M when the die sinking direction drives.When the thick mould 101 of maximum norm was installed, moving die plate 5M was positioned at the driving stage extreme position of die sinking direction, promptly is connected to the position of positioning element 11.In addition, under die opening state, the piston 21a of closing cylinder 17 is positioned at original position OP, the driving stage extreme position of the side that the driving direction during promptly with matched moulds is opposite.Moving side halfnut 27 is thrown off.Fixation side halfnut 23 is stuck.Though fixation side halfnut 23 after thrown off or engaging in the thick adjustment of mould stated, but in whole a plurality of forming period, keep fastening state constant.
In step ST1, make moving die plate 5M move (advancing) towards the mold closing direction, thus, mold closing mechanism 1 carries out mold closing.Specifically, control device 33 makes the piston 13b of die sinking mold closing cylinder 13 towards rod end REP side shifting, and head rod 7A and moving die plate 5M are relatively moved.Because head rod 7A is fastened on the fixed form 5F through fixation side halfnut 23, so moving die plate 5M moves to the mold closing direction with respect to fixed form 5F.At this moment, because the piston 21a of closing cylinder 17 is positioned at original position OP, therefore, even do not supply with working solution to closing cylinder 17, piston 21a does not move yet.That is, fixation side halfnut 23 and head rod 7A do not move.In order to shorten forming period, and alleviate the load of the each several part of mold closing mechanism 1, die sinking mold closing cylinder 13 is preferably according to than low speed, higher speed, driven than the order of low speed.
In step ST2, as shown in Figure 2, moving die plate 5M stops when mould contact distance is Δ S.This is because die sinking mold closing cylinder 13 arrives rod end REP.In other words, when die sinking mold closing cylinder 13 arrives rod end REP, head rod 7A adjustment its with fixed form 5F between clamped position so that moving die plate 5M stops when mould contact distance is Δ S.
In addition, control device 33 can detect die sinking mold closing cylinder 13 through the whole bag of tricks and arrive driving stage extreme position (being rod end REP in this embodiment).For example, at mold closing mechanism 1 position sensor of the position of detecting piston 13b is set, control device 33 can detect based on the testing result of this position sensor arrive the driving stage extreme position.Position sensor can be to detect the device whether piston 13b has arrived the Switch of driving stage extreme position.For example, at mold closing mechanism 1 pressure sensor of the cylinder chamber pressure that detects die sinking mold closing cylinder 13 is set, control device 33 can arrive the driving stage extreme position according to the detections such as rising of the pressure that is detected by this pressure sensor.Control device 33 can not rely on the testing result of foregoing position sensor or pressure sensor, but with after beginning from die sinking mold closing cylinder 13 to drive through certain hour serve as to arrive the driving stage extreme position according to judging.
In step ST3, control device 33 makes and moves 27 engagings of side halfnut, thereby moving die plate 5M is engaged with connecting rod 7.At this moment, need not carry out first move side halfnut 27A and head rod 7A mobile side be stuck the engagement adjustment between the 7b of portion.Why be like this because; Relative position between head rod 7A and the moving die plate 5M when piston 13b of die sinking mold closing cylinder 13 is positioned at rod end REP (move side halfnut 27) is always constant with thick haveing nothing to do of mould; Therefore; Preestablish the length of attaching parts 15 or the installation site of die sinking mold closing cylinder 13 etc. and get final product, so that when piston 13b is positioned at rod end REP, make first to move side halfnut 27A and be stuck the 7b of portion with the mobile side of head rod 7A and engage.In addition, need not carry out yet second move the side halfnut 27B and the second connecting rod 7B mobile side be stuck the engagement adjustment between the 7b of portion.Why be like this because, of the back, when die sinking mold closing cylinder 13 arrives rod end REP, utilize the clamped position between the trimmer 25 adjustment second connecting rod 7B and the fixed form 5F, so that second moves side halfnut 28B and mobile side and be stuck the 7b of portion and mesh.
In step ST4, mold closing mechanism 1 advances moving die plate 5M once more.But this driving method that advances is different with step ST1.Specifically, control device 33 moves the driving direction of piston 21a when matched moulds of closing cylinder 17.Piston element 21 engages with connecting rod 7 through fixation side halfnut 23 or trimmer 25, and connecting rod 7 engages with moving die plate 5M through moving side halfnut 27, and therefore, moving die plate 5M moves towards the mold closing direction.The pressure of the closing cylinder 17 of this moment is preferably low pressure, so that the impact in the mould of stating after the suppressing contact.
In step ST5, the mould that carries out as shown in Figure 3 contacts.At this moment, the piston 21a of closing cylinder 17 moves Δ S distance from original position OP.Therefore, control device 33 is stored distance, delta S in advance, thereby the testing result of position-based sensor 29 can detect mould and contact.
In step ST6, mold closing mechanism 1 carries out matched moulds.Specifically, when control device 33 detects the mould contact, the pressure of closing cylinder 17 is risen until the mold clamping force that can access regulation.Because mold clamping force confirms through the elongation of connecting rod 7, therefore, the testing result of control device 33 position-based sensors 29 can detect and obtain the mold clamping force stipulated.If the mold clamping force that obtains stipulating, then mold closing mechanism 1 gets into next step.
In step ST7, begin to be shaped.Specifically, the not shown die cavity of the never illustrated ejecting device of motlten metal (metal material of molten condition) in being formed at mould 101 penetrates and fills.Motlten metal in the die cavity is endowed through ejecting device and is lower than mold clamping force and higher pressure.When the motlten metal in the die cavity solidifies, finish be shaped (step ST8).Begin to finish from shaping, keep the mold clamping force of regulation to being shaped.
In step ST9, mold closing mechanism 1 reduces pressure.That is, control device 33 stops to supply with working solution to closing cylinder 17, and this working solution is used to produce mold clamping force.Be accompanied by the recovery of the connecting rod 7 that has extended, the piston 21a of closing cylinder 17 moves to the position of leaving distance, delta S from original position.That is, return to state shown in Figure 3.
In step ST10, mold closing mechanism 1 carries out the initial stage action of die sinking.Specifically, control device 33 makes the opposite side drive of the driving direction of closing cylinder 17 to matched moulds the time.That is, control device 33 make closing cylinder 17 piston 21a towards original position OP side shifting.Because piston 21a is fastened on the moving die plate 5M via connecting rod 7 and mobile side halfnut 27, so moving die plate 5M moves towards the die sinking direction.Thus, carry out die sinking, formed products leaves and stays on another from fixed mould 101F and the 101M one of moving moulds.In order to make the formed products demoulding, the driving force of the closing cylinder 17 among the step ST10 is set to bigger.In addition, the amount of movement of piston 21a (moving die plate 5M) is below Δ S.
In step ST11, mold closing mechanism 1 is thrown off and is moved side halfnut 27, removes engaging between connecting rod 7 and the moving die plate 5M.
In step ST12, mold closing mechanism 1 makes moving die plate 5M move (retreating) towards the die sinking direction.Specifically, control device 33 makes the piston 13b of die sinking mold closing cylinder 13 towards head end HEP side shifting, and head rod 7A and moving die plate 5M are relatively moved.Because head rod 7A is fastened on the fixed form 5F through fixation side halfnut 23, therefore, moving die plate 5M moves towards the die sinking direction with respect to fixed form 5F.In addition, in order not only to shorten forming period, and alleviate the load of mold closing mechanism 1 each several part, die sinking mold closing cylinder 13 is preferably according to than low speed, higher speed, drive than the order of low speed.In step ST12, also can control the outflow or the inflow of hydraulic oil, make closing cylinder 17 under the reaction that moving die plate 5M is moved, not move towards the direction of leaving from original position OP.
In step ST13, the piston 13b of die sinking mold closing cylinder 13 arrives head end HEP, finishes die sinking.As stated, because mould 101 is the thick mould of maximum norm, so moving die plate 5M arrives the driving stage extreme position of die sinking direction.Closing cylinder 17 is controlled as and makes piston 21a get back to original position OP.Recurrence towards original position OP can be carried out the suitable period the step ST1 from step ST10 to next cycle.In addition, during from step ST12 to step ST13, perhaps after step ST13, formed products is extruded from mould 101 under the effect of not shown extrusion device.So forming period finishes.
Below, the action of mold closing mechanism 1 in the thick adjustment of mould is described.
Fig. 5 to Fig. 8 is the side view of the mold closing mechanism 1 in the thick adjustment of expression mould, comprises profile in the part.Fig. 9 is the flow chart of the thick adjustment of mould of explanation mold closing mechanism 1.
In step ST21, carry out the replacing of mould.Example when expression is replaced by the thick fixed mould 103F of minimum modulus and is moved moulds 103M (following abbreviate " mould 103 " sometimes as and do not distinguish the two) from Fig. 1 to the thick mould 101 of maximum norm shown in Figure 3 in Fig. 5 to Fig. 8.
In step ST22, carry out the mould contact in order to make mould 103, mold closing mechanism 1 makes moving die plate 5M move (advancing) towards the mold closing direction.Should move with the step S1 of Fig. 4 likewise, utilizing fixation side halfnut 23, through driving die sinking mold closing cylinder 13 head rod 7A and moving die plate 5M are relatively moved and carry out under head rod 7A and the state that fixed form 5F engages.
But, be under the situation such as mould of mould thickness at the die change thick from mould, only rely on same moving with the step S1 of Fig. 4, can not carry out the mould contact.So mold closing mechanism 1 also makes head rod 7A move with respect to fixed form 5F.Specifically, be described below.
The following state of expression promptly is replaced by under the situation of the thick mould of minimum modulus 103 at the mould thick from maximum norm 101 in Fig. 5, with the step S1 of Fig. 4 likewise, make die sinking mold closing cylinder 13 move to rod end REP.In addition, in Fig. 5 with the position of mobile side halfnut in the double dot dash line presentation graphs 1 27 and moving die plate 5M.
As shown in Figure 2, under the situation that mould 101 is installed, mould 101 is near to the position of leaving distance, delta S.But mould 103 is because of the mould thickness of its mould thickness rate mould 101, so the following distance of being separated by, this distance equals distance, delta S and adds thick poor of mould between mold 101 and the mould 103.Only depend on identical the moving of step S1 with Fig. 4, moving die plate 5M is advanced further.
So as shown in Figure 6, mold closing mechanism 1 is thrown off fixation side halfnut 23, remove engaging between head rod 7A and the fixed form 5F, make die sinking mold closing cylinder 13 move to head end HEP.Then, the side halfnut 23 that is fixed once more.Thus, mold closing mechanism 1 through once more with die sinking mold closing cylinder 13 towards rod end REP side shifting, thus, moving die plate 5M is moved towards the mold closing direction.When being fixed side halfnut 23, driving die sinking mold closing cylinder 13 and mesh adjustment.
As stated; Head rod 7A is fastened on drive die sinking mold closing cylinder 13 under the state of fixed form 5F when moving die plate 5M is moved; Before moving die plate 5M arrived desired position, die sinking mold closing cylinder 13 had arrived under the situation of driving stage extreme position, removed engaging between head rod 7A and the fixed form 5F; The in the opposite direction direction of die sinking mold closing cylinder 13 towards with mobile moving die plate 5M the time driven; Head rod 7A is moved, head rod 7A is engaged with fixed form 5F, thereby can make moving die plate 5M move to desired position.Make the situation of moving die plate 5M when the die sinking direction moves also same as described above.
In step ST23, the result that moving die plate 5M is advanced is to carry out the mould contact.Through carrying out mould contact, be limited with respect to the mobile of moving die plate 5M of head rod 7A, and then the piston 13b of the die sinking mold closing cylinder 13 also optional position in stroke S stops.
In step ST24, mold closing mechanism 1 is thrown off fixation side halfnut 23, removes engaging between head rod 7A and the fixed form 5F.
In step ST25, mold closing mechanism 1 makes the piston 13b of die sinking mold closing cylinder 13 move to rod end REP (the driving stage extreme position of the driving direction during matched moulds).Head rod 7A because of removed its with fixed form 5F between engage, so move towards the rear side of moving die plate 5M.So mold closing mechanism 1 is in state shown in Figure 7.
In step ST26, the mold closing mechanism 1 side halfnut 23 that is fixed makes head rod 7A engage with fixed form 5F.At this moment, mold closing mechanism 1 makes the piston 21a of closing cylinder 17 move from original position OP, carries out the engagement adjustment of fixation side halfnut 23.The amount of movement of piston 21a of this moment is below the spacing P of fixation side halfnut 23 and fixation side a plurality of endless grooves of being stuck the 7a of portion.
In step ST27, side halfnut 27A is moved in engaging first, and head rod 7A is engaged with moving die plate 5M.At this moment, need not mesh adjustment.This is because as narrating in the explanation of forming period, first relative position that move between side halfnut 27A and the head rod 7A does not change because of mold exchange more when making the piston 13b of die sinking mold closing cylinder 13 move to rod end REP.
In step ST28, make the piston 21a of closing cylinder 17 get back to original position OP.At this moment, because head rod 7A moves side halfnut 27A with fixation side halfnut 23 and first and engages, therefore be accompanied by moving of piston 21a, moving die plate 5M moves towards the die sinking direction.So fixed mould 103F opens (with reference to Fig. 8) with the 103M branch that moves moulds.
In step ST29, as shown in Figure 8, side halfnut 27B is moved in engaging second, and the second connecting rod 7B is engaged with moving die plate 5M.At this moment, second move side halfnut 27B and mesh adjustment through changing trimmer 25.Then, for example, mold closing mechanism 1 is thrown off mobile side halfnut 27, utilizes die sinking mold closing cylinder 13 that the die sinking position of moving die plate 5M when forming period moved, thereby finishes the thick adjustment of mould.
Can know the state when the step ST29 in the thick adjustment of mould finishes, the state when being equivalent to the step ST3 end in the forming period from the contrast of Fig. 8 and Fig. 2.Fig. 2 that in the explanation of forming period, narrates and the distance, delta S of Fig. 3, the amount of movement of the piston 21a of closing cylinder 17 equates when fixation side halfnut 23 meshes adjustment among the step ST26 of the thick adjustment of mould.Owing to according to the thick difference of mould, meshes the required amount of movement of adjustment among the step ST26 and change, so the value of distance, delta S itself is different because of mould.
From above action specification, can understand following content.Fixation side halfnut 23 and fixation side are stuck the adjustable range of the clamped position of the 7a of portion, equate perhaps at this more than difference with poor (Ldif=Lmax-Lmin) of the maximum norm thick (Lmax) thick with minimum modulus (Lmin) of mold closing mechanism 1.Be preferably, this adjustable range is that said poor (Ldif) adjusts below the adjusting range sum (Ldif+P) below the required spacing (P) with engagement.This adjustable range is for example greater than the stroke (fixation side halfnut 23 is with respect to the removable amount of fixed form 5F) of closing cylinder 17, and its size is not for being difficult to effective utilization if do not drive 13 in die sinking mold closing cylinder.Because the clamped position that the mobile side of head rod 7A is stuck the 7b of portion not because of the thick variation of mould changes, also is fine even therefore can not adjust clamped position.The mobile side of the second connecting rod 7B is stuck the 7b of portion and fixation side is stuck the 7a of portion likewise, because its clamped position changes because of the thick variation of mould, therefore is configured to be stuck the equal size of the 7a of portion with fixation side.In order to seek the miniaturization of die sinking mold closing cylinder 13, the stroke S of die sinking mold closing cylinder 13 is preferably below the Ldif+P.
According to the first above embodiment; Mold closing mechanism 1 has control device 33; 33 pairs of fixation side halfnuts of this control device 23 are controlled with die sinking mold closing cylinder 13, so that under the state of the engaging of carrying out fixation side halfnut 23, carry out the die sinking mold closing through driving die sinking mold closing cylinder 13.In addition, fixation side halfnut 23 is stuck the 7a of portion on the length direction of head rod 7A with fixation side, can adjust the clamped position between fixed form 5 and the head rod 7A.Therefore, as describing, can utilize die sinking mold closing cylinder 13 that head rod 7A and fixed form 5F are relatively moved and carry out the thick adjustment of mould with reference to Fig. 9.That is, also can die sinking mold closing cylinder 13 be utilized as being used to adjust the thick drive unit of mould, this die sinking mold closing cylinder 13 is used to make moving die plate 5M to move and carries out the die sinking mold closing.Consequently, can carry out the thick adjustment of mould with simple structure.
And the thick adjustment of this mould can suppress to change because of the thick variation of mould causes the substantive stroke of die sinking mold closing cylinder 13.For example, can know from the contrast of Fig. 2 and Fig. 5 that mould is thick thin more, mold closing mechanism 1 need make moving die plate 5M advance more.Therefore, when hypothesis can not adjust the clamped position between head rod 7A and the fixed form 5F time, contact in order under the thick situation of minimum modulus, also to carry out mould, die sinking mold closing cylinder 13 must be the big cylinder of stroke S.If be provided with such die sinking mold closing cylinder 13, when mould thickness rate minimum modulus was thick, the piston 13b of die sinking mold closing cylinder 13 arrived driving stage extreme position (rod end REP) before, through mould contact limit mobile.That is, cause the movable range of piston 13b correspondingly to reduce the amount of the thick increase of mould.On the other hand, in this embodiment,, therefore can make die sinking mold closing cylinder 13 give full play to its performance, for example drive die sinking mold closing cylinder 13 etc. with total travel owing to can adjust the position between head rod 7A and the fixed form 5F.Consequently, with respect to maximum norm thick with thick poor of minimum modulus, can realize the miniaturization of die sinking mold closing cylinder 13, and seek the miniaturization and the cost degradation of whole device.
Mold closing mechanism 1 has: can engage first of moving die plate 5M and head rod 7A and move side halfnut 27A and move side and be stuck the 7b of portion, be accommodated in the piston 21a in the cylinder chamber 19 that on fixed form 5F, is provided with.In addition, fixation side halfnut 23 engages with piston 21a, and can together move along die sinking mold closing direction relative fixed template 5F with piston 21a.In addition, mold closing mechanism 1 through supplying with working solution to cylinder chamber 19, can produce the mold clamping force based on the elongation of connecting rod 7 under the state of the engaging of carrying out fixation side halfnut 23 and mobile side halfnut 27.Constitute according to this, first move the cylinder barrel 13a of side halfnut 27A and die sinking mold closing cylinder 13 relative position be maintained constant.Therefore, the effect of stating after for example obtaining easily promptly need not move the engagement adjustment of side halfnut 27, the required distance, delta S of engagement adjustment during with the thick adjustment of mould converts mould in the forming period into and be about to the distance before the contact.
Control device 33 is controlled die sinking mold closing cylinder 13 and mobile side halfnut 27 when mold closing; So that under the situation of the driving stage extreme position (rod end REP) of the driving direction when making die sinking mold closing cylinder 13 be driven into mold closing, move the engaging that side halfnut 27 and mobile side are stuck the 7b of portion.Therefore, not only can effectively utilize the stroke of die sinking mold closing cylinder 13, and need not mesh adjustment, thereby shorten forming period through utilizing the driving stage extreme position.
Control device 33 is controlled fixation side halfnut 23 and die sinking mold closing cylinder 13 in the thick adjustment of mould; So that carrying out mould contact and removing under the state of engaging that fixation side halfnut 23 and fixation side be stuck the 7a of portion; Driving stage extreme position (rod end REP) when making die sinking mold closing cylinder 13 move to mold closing; Carry out the engaging of fixation side halfnut 23, after a plurality of forming period in, keep the engaging of the fixation side halfnut 23 in the thick adjustment of mould and carry out the die sinking mold closing.Therefore, can carry out the thick adjustment of above-mentioned mould simply, the thick adjustment of this mould is carried out in order to make die sinking mold closing cylinder 13 be driven into rod end REP when the mold closing of forming period.
Fixation side halfnut 23 is stuck the 7a of portion with fixation side can be in every a plurality of clamped position engagings of arranging across a certain distance; Because control device 33 is when making fixation side halfnut 23 and fixation side be stuck the 7a of portion engaging; Make piston 21a move one from original position OP (the driving stage extreme position of die sinking direction) and mesh adjustment below the spacing; Therefore, distance, delta S that can engagement adjustment in the thick adjustment of mould is required as forming period in mould be about to the distance before the contact.Consequently, in forming period, the engagement adjustment that is stuck the 7a of portion with fixation side halfnut 23 and fixation side is irrelevant, makes die sinking mold closing cylinder 13 be driven into rod end REP and realizes mold closing.
In the first above embodiment; Fixed mould 101F and fixed mould 103F are respectively examples of fixed die of the present invention; The 101M that moves moulds is respectively an example of mobile mould of the present invention with the 103M that moves moulds; Fixed form 5F is an example of the template of a side of the present invention, and moving die plate 5M is an example of the template of opposite side of the present invention, and die sinking mold closing cylinder 13 is examples of die sinking mold closing drive unit of the present invention; Cylinder barrel 13a is an example of fixed part of the present invention; Piston rod 13c is an example of movable part of the present invention, and fixation side halfnut 23 is examples of first holding section of the present invention and the thick adjustment part of mould, and moving side halfnut 27 is examples of second holding section of the present invention.
(second embodiment)
Figure 10 and Figure 11 are the side views of the mold closing mechanism 201 of expression second embodiment, comprise profile, perspective view in the part.Figure 10 representes the more state midway of mold exchange.Figure 11 connecting rod for indication is extracted state.In Figure 10 and Figure 11, the profile of upper side and the profile of lower side are represented the profile of diverse location respectively.That is, the whichever profile is all represented the profile of head rod 7A position.In addition, omitted lower side and be the nut that moves side diagram with cylinder 35 etc.Can think that in Figure 10 and Figure 11 four connecting rods 7 constitute by head rod 7A.
Mold closing mechanism 201 have be used for from fixed form 5F extract the top connecting rod (the head rod 7A and the second connecting rod 7B each one.As stated, in Figure 10 and Figure 11, only represent head rod 7A) drawing cylinder 214, this point is different with the mold closing mechanism 1 of first embodiment.Specifically, be described below.
Drawing cylinder 214 is made up of hydraulic cylinder, the piston rod 214c that has cylinder barrel 214a, is accommodated in the piston 214b in the cylinder barrel 214a and is fixed in piston 214b and stretch out from cylinder barrel 214a.
The drawing cylinder 214 that to extract as the head rod 7A of top connecting rod between the attaching parts 215 with die sinking mold closing cylinder 13 and head rod 7A connection, is connected in series with respect to die sinking mold closing cylinder 13.That is, the piston rod 13c of die sinking mold closing cylinder 13 and the cylinder barrel 214a of drawing cylinder 214 are fixed, and the piston rod 214c and the attaching parts 215 of drawing cylinder 214 are fixed.
Therefore, like Figure 10 and shown in Figure 11, mold closing mechanism 201 through drive die sinking mold closing cylinder 13 and drawing cylinder 214 the two, thereby can drive head rod 7A with the stroke behind both strokes of addition as the top connecting rod.So, can extract head rod 7A from fixed form 5F as the top connecting rod.Thus, carry out the die change operation easily.
In addition; Mold closing mechanism 201 does not move relative to cylinder barrel 214a through the piston 214b that makes drawing cylinder 214; Thereby with first embodiment likewise; Can only utilize die sinking mold closing cylinder 13 to drive the head rod 7A as the top connecting rod, this drawing cylinder 214 is used to extract the head rod 7A as the top connecting rod.Consequently, in second embodiment, also can access the various effects that obtain in first embodiment.For example, thick irrelevant with mould in forming period, can use die sinking mold closing cylinder 13 with total travel.
In addition, extract as the drawing cylinder 214 of the second connecting rod 7B of top connecting rod identical with the drawing cylinder of prior art.That is, though this drawing cylinder 214 does not illustrate especially, still for example cylinder barrel 214a is fixed on the moving die plate 5M, and piston rod 214c is fixed on the attaching parts 215.
(the 3rd embodiment)
Figure 12 is the side view of the mold closing mechanism 301 of expression the 3rd embodiment, comprises profile in the part.Die opening state when Figure 12 has represented to install the thick mould 101 of maximum norm.
The mold closing mechanism 1 of first embodiment has die sinking mold closing cylinder 13 on moving die plate 5M, relative with it, and the mold closing mechanism 301 of the 3rd embodiment has die sinking mold closing cylinder 13 on fixed form 5F, and this point is different with mold closing mechanism 1.
Specifically, in die sinking mold closing cylinder 13, cylinder barrel 13a is via fixation side halfnut 23 being installed in the plate-shaped member on the piston element 21 and being arranged on the fixed form 5F.Therefore, cylinder barrel 13a can move with respect to fixed form 5F along die sinking mold closing direction in the stroke of the piston 21a of closing cylinder 17.The piston rod 13c of die sinking mold closing cylinder 13 and first embodiment likewise are fixed on the head rod 7A via attaching parts 15.Wherein, piston rod 13c is fixed on the end of fixed form 5F side of head rod 7A.
Mold closing mechanism 301 drives die sinking mold closing cylinder 13 under the state with moving die plate 5M and head rod 307A engaging, head rod 307A is moved with respect to fixed form 5F, thereby can move moving die plate 5M towards die sinking mold closing direction.
In order to engage moving die plate 5M and head rod 307A, mold closing mechanism 301 has to be located at first on the moving die plate 5M and to move side halfnut 27A and be located at first on the head rod 307A and move side and be stuck the 307b of portion.
First moves side halfnut 27A and first moves the formation that side is stuck the 307b of portion, and to be stuck the 7b of portion identical with mobile side halfnut of first embodiment 27 and mobile side.Wherein, first move side and be stuck the 307b of portion and be arranged on than mobile side and be stuck in the wideer gamut of the 7b of portion.
In addition, for convenience's sake, just the second connecting rod 307B has been marked the second connecting rod 7B different drawings mark with first embodiment, its structure is identical with the second connecting rod 7B.Below, sometimes the head rod 307A and the second connecting rod 307B are abbreviated as " connecting rod 307 " and do not distinguish the two.
The action of mold closing mechanism 301 is described.The action of mold closing mechanism 301 in forming period at first is described.
Figure 13 is the side view of the mold closing mechanism of STA representation midway 301 during with mold closing, comprises profile in the part.In addition, Figure 13 is equivalent to the intermediateness of Fig. 2 and Fig. 3 in first embodiment.Figure 14 is the figure that comprises the flow chart of the action that mold closing mechanism 301 is described.The labeling method of Figure 14 is identical with Fig. 4.Wherein, about the action of halfnut, the action that side halfnut 27A is moved in the action and first that difference expression fixation side halfnut 23 and second moves side halfnut 27B.
The step ST51 of Figure 14～ST63 is corresponding to ST1～ST13 of Fig. 4.But, because mold closing mechanism 301 moves under the state of engaging of side halfnut 27A carrying out first, drive die sinking mold closing cylinder 13 and also carry out the die sinking mold closing, therefore, relate to fixation side halfnut 23 and move the action etc. of side halfnut 27 different with Fig. 4.
Specifically, with fixation side halfnut 23 in first embodiment likewise, first of the 3rd embodiment moves side halfnut 27A and in whole a plurality of forming period, all is stuck.On the other hand, the fixation side halfnut 23 of the 3rd embodiment likewise engages with the mobile side halfnut 27 of first embodiment or throws off (cycle when beginning, step ST53, step ST61).In other words, it is identical with first embodiment that die sinking mold closing cylinder 13, closing cylinder 17 and second move the action of side halfnut 27B.
Flow chart according to Figure 14 describes below.Wherein, be that the center describes with difference with first embodiment, omitted the explanation that repeats with first embodiment sometimes.In other words, about first embodiment, the action that has described etc. also can suitably be carried out in the 3rd embodiment.
When the cycle began, mold closing mechanism 301 was in die opening state shown in figure 12.Under this state, the piston 13b of die sinking mold closing cylinder 13 is positioned at head end HEP, promptly drives the driving stage extreme position of moving die plate 5M towards the die sinking direction.The piston 21a of closing cylinder 17 is positioned at original position OP, the driving stage extreme position of the side that the driving direction during promptly with matched moulds is opposite.First moves side halfnut 27A is stuck.Second moves side halfnut 27B and fixation side halfnut 23 is thrown off.
In step ST51, mold closing mechanism 301 makes moving die plate 5M move (advancing) and carry out mold closing towards the mold closing direction.Specifically, control device 33 makes die sinking mold closing cylinder 13 towards rod end REP side shifting, and head rod 7A and fixed form 5F are relatively moved.Because head rod 7A moves side halfnut 27A through first and engages with moving die plate 5M, so moving die plate 5M moves towards the mold closing direction with respect to fixed form 5F.At this moment, the piston 21a of closing cylinder 17 preferably maintains original position OP.
In step ST52, die sinking mold closing cylinder 13 arrives rod end REP, and moving die plate 5M is also having distance, delta S place to stop from the mould contact.Why be because when die sinking mold closing cylinder 13 arrives rod end REP like this, the clamped position between adjustment head rod 7A and the moving die plate 5M is so that moving die plate 5M is also having distance, delta S place to stop from the mould contact.
In step ST53, shown in figure 13, side halfnut 27B is moved in control device 33 engagings second, and moving die plate 5M is engaged with the second connecting rod 7B.At this moment, need not carry out second moves side halfnut 27B and mobile side and is stuck the engagement adjustment between the 7b of portion.This is because as narrating in the back, in the thick adjustment of mould, mesh adjustment in advance through trimmer 25.
In step ST53, the side that is fixed halfnut 23 makes head rod 7A engage with the piston 21a of closing cylinder 17.At this moment, need not carry out fixation side halfnut 23 and fixation side and be stuck the engagement adjustment between the 7a of portion.This be because; Because the piston 13b of die sinking mold closing cylinder 13 relative position between head rod 307A and the fixation side halfnut 23 and thick haveing nothing to do of mould and constant all the time when rod end REP; Therefore adjust the length of attaching parts 15 or the installation site of die sinking mold closing cylinder 13 etc. in advance and get final product, feasible when piston 13b is positioned at rod end REP fixation side halfnut 23 be stuck the 7a of portion with fixation side and engage.
Step ST54～ST60 is identical with the step ST4～ST10 of first embodiment.Wherein, in step ST54～ST56, ST59 and ST60, the integral body of die sinking mold closing cylinder 13 along with moving of the piston 21a of closing cylinder 17, together moves with piston element 21 or fixation side halfnut 23.
In step ST61, mold closing mechanism 301 is thrown off fixation side halfnut 23, removes engaging between head rod 7A and the fixed form 5F.In addition, mold closing mechanism 301 makes second to move side halfnut 27B and throw off, and removes engaging between the second connecting rod 7B and the moving die plate 5M.
In step ST62, mold closing mechanism 301 makes moving die plate 5M move (retreating) towards the die sinking direction.Specifically, control device 33 makes the piston 13b of die sinking mold closing cylinder 13 towards head end HEP side shifting, and head rod 7A and fixed form 5F are relatively moved.Because head rod 7A moves side halfnut 27A through first and is fastened on the moving die plate 5M, so moving die plate 5M moves towards the die sinking direction with respect to fixed form 5F.
In step ST63, the piston 13b of die sinking mold closing cylinder 13 arrives head end HEP, finishes die sinking.
Then, the action of mold closing mechanism 301 in the thick adjustment of mould is described.
Figure 15 and Figure 16 are the side views of the mold closing mechanism 301 in the thick adjustment of expression mould, comprise profile in the part.Figure 15 and Figure 16 are equivalent to Fig. 6 and the Fig. 7 in first embodiment respectively.Figure 17 is the flow chart of the thick adjustment of mould of explanation mold closing mechanism 301.
The step ST71 of Figure 17～ST76 is corresponding to step ST21～ST26 of Fig. 9.But, since mold closing mechanism 301 through adjust first move side halfnut 27A clamped position carry out the thick adjustment of mould, therefore, relate to fixation side halfnut 23 and mobile side halfnut 27 action (step ST74, ST76) wait different with Fig. 9.
Flow chart according to Figure 17 describes below.Wherein, be that the center describes with difference with first embodiment, omitted the explanation that repeats with first embodiment.In other words, about first embodiment, the action of having explained etc. also can suitably be carried out in the 3rd embodiment.
In step ST71, carry out the replacing of mould.In Figure 15 and Figure 16 illustration be replaced by the situation of the thick mould of minimum modulus 103 from Figure 12 and the thick mould 101 of maximum norm shown in Figure 13.
In step ST72, carry out the mould contact in order to make mould 103, mold closing mechanism 301 makes moving die plate 5M move (advancing) towards the mold closing direction.Should move with the step S51 of Figure 14 likewise, utilizing first to move under the state of side halfnut 27A engaging head rod 7A and moving die plate 5M,, head rod 7A and fixed form 5F are relatively moved carry out through driving die sinking mold closing cylinder 13.
But, be under the situation such as mould of mould thickness at the die change thick from mould, with the step ST22 of first embodiment likewise, only rely on same moving with the step S51 of Figure 14, can not carry out the mould contact.So the mold closing mechanism 301 and first embodiment likewise also make head rod 7A and move with respect to the template that is fixed in the forming period (being fixed form 5F in first embodiment, is moving die plate 5M in the 3rd embodiment).
For example, under the state that carries out the thick thick adjustment of mould of maximum norm, even the piston 13b of die sinking mold closing cylinder 13 is moved to rod end REP, moving die plate 5M also only moves to position shown in figure 13.So shown in figure 15, the engaging that side halfnut 27A is moved in releasing first makes the piston 13b of die sinking mold closing cylinder 13 move to head end HEP.Then, engage first once more and move side halfnut 27A.Thus, mold closing mechanism 301 can make moving die plate 5M move towards the mold closing direction through making die sinking mold closing cylinder 13 towards rod end REP side shifting once more.In addition, when side halfnut 27A is moved in engaging first, drive die sinking mold closing cylinder 13, mesh adjustment.
As stated; When driving die sinking mold closing cylinder 13 and moving die plate 5M moved under head rod 7A and the state that moving die plate 5M engages; Die sinking mold closing cylinder 13 has arrived under the situation of driving stage extreme position before moving die plate 5M arrives desired position; Remove engaging between head rod 7A and the moving die plate 5M; The in the opposite direction direction of die sinking mold closing cylinder 13 towards with mobile moving die plate 5M the time driven and only move head rod 7A,, can make moving die plate 5M move to desired position through engaging head rod 7A and moving die plate 5M once more.The situation of moving die plate 5M when the die sinking direction moves is also identical.
In step ST73, the result that moving die plate 5M is advanced is to carry out the mould contact.Through carrying out the mould contact, moving die plate 5M and head rod 7A are limited with respect to the mobile of fixed form 5F, and then the piston 13b of the die sinking mold closing cylinder 13 also optional position in stroke S stops.
In step ST74, mold closing mechanism 301 makes first to move side halfnut 27A and throw off, and removes engaging between head rod 7A and the moving die plate 5M.
In step ST75, mold closing mechanism 301 makes the piston 13b of die sinking mold closing cylinder 13 move to rod end REP (the driving stage extreme position of the driving direction during mold closing).Since head rod 7A be disengaged with moving die plate 5M between engage, so its rear side towards fixed form 5F moves.So mold closing mechanism 301 is in state shown in figure 16.
In step ST76, side halfnut 27A is moved in mold closing mechanism 301 engagings first, and head rod 7A is engaged with moving die plate 5M.At this moment, mold closing mechanism 301 moves the piston 21a of closing cylinder 17 from original position OP, carry out first move side halfnut 27A the engagement adjustment.The amount of movement of piston 21a of this moment is first to move side halfnut 27A and first and move below the spacing P of a plurality of endless grooves that side is stuck the 307a of portion.
In step ST77, the side that is fixed halfnut 23 makes head rod 7A engage with fixed form 5F.At this moment, need not mesh adjustment.This is because as narrating in the explanation of forming period, and the relative position when the piston 13b of die sinking mold closing cylinder 13 is moved to rod end REP between fixation side halfnut 23 and the head rod 7A does not change because of die change.
In step ST78, make the piston 21a of closing cylinder 17 get back to original position OP.At this moment, because head rod 7A moves side halfnut 27A with fixation side halfnut 23 and first and engages, therefore, along with moving of piston 21a, moving die plate 5M moves towards the die sinking direction.So fixed mould 103F opens with the 103M branch that moves moulds.
In step ST79, with step ST29 likewise, mesh adjustment through trimmer 25, engaging second is moved side halfnut 27B, and the second connecting rod 7B is engaged with moving die plate 5M.Like this, mold closing mechanism 301 finishes the thick adjustment of mould.
From above action specification, can understand following content.The fixation side halfnut 23 and the fixation side of the 3rd embodiment are stuck the 7a of portion; The mobile side that moves side halfnut 27A and head rod 7A with first of first embodiment is stuck the 7b of portion likewise; Because clamped position not because of the thick variation of mould changes, also is fine even therefore can not adjust clamped position.First of the 3rd embodiment moves side halfnut 27A and first and moves side and be stuck the 307b of portion; Be stuck the 7a of portion likewise with the fixation side halfnut 23 and the fixation side of first embodiment, the adjustable range of clamped position equates with poor (Ldif=Lmax-Lmin) of the maximum norm thick (Lmax) thick with minimum modulus (Lmin) of mold closing mechanism 1 or at this more than difference.In embodiment, though illustration first move side and be stuck the situation that the 307b of portion forms significantly,, first moves side is stuck the 307b of portion also can to form its adjustable range is below the Ldif+P.Second of the 3rd embodiment moves side halfnut 27B and moves the adjustable range that side is stuck the 7b of portion, moves side halfnut 27B with second of first embodiment and move side that to be stuck the adjustable range of the 7b of portion identical.
According to the 3rd above embodiment, can access the effect identical with first embodiment.That is, can access following effect: can carry out the thick adjustment of mould, suppress to change because of the thick variation of mould causes the substantive stroke of die sinking mold closing cylinder 13 with simple structure.
Mold closing mechanism 301 has die sinking mold closing cylinder 13 and closing cylinder 17 on same plate (being fixed form 5F in the 3rd embodiment).In addition, the two all engages fixation side halfnut 23 and die sinking mold closing cylinder 13 with the piston 21a of closing cylinder 17, can together move along die sinking mold closing direction with piston 21a.Constitute according to this, the relative position between the cylinder barrel 13a of fixation side halfnut 23 and die sinking mold closing cylinder 13 is maintained constant.Consequently; With first embodiment likewise; Obtain following effect easily, promptly need not carry out the engagement adjustment of fixation side halfnut 23, the required distance, delta S of engagement adjustment during with the thick adjustment of mould converts mould in the forming period into and be about to the distance before the contact.
In mold closing mechanism 301, die sinking mold closing cylinder 13 is arranged on the fixed form 5F, and head rod 7A moves and driving moving die plate 5M in the die sinking mold closing.Because therefore the intrinsic notion that existed connecting rod in the die sinking mold closing, to stop in the past, can seek abundantization of technology through this embodiment.Consequently, for example die sinking mold closing cylinder 13 grades are fixed on the lightweight that fixed form 5F upward can seek moving die plate 5M.
In the 3rd above embodiment; Fixed form 5F is an example of the template of opposite side of the present invention; Moving die plate 5M is an example of the template of a side of the present invention; Die sinking mold closing cylinder 13 is examples of die sinking mold closing drive unit of the present invention, and first moves the example that side halfnut 27A is first holding section of the present invention and the thick adjustment part of mould, and fixation side halfnut 23 is the examples in second holding section of the present invention.In the 3rd embodiment, about the template of the template of the template that constitutes a side of the present invention and opposite side and constitute first holding section and the holding section of second holding section, fixation side and to move the situation of side opposite with first embodiment.
(the 4th embodiment)
Figure 18 is with the side view of the mold closing mechanism 401 of the 4th embodiment of STA representation midway of die change, comprises profile, perspective view in the part.In the 4th embodiment, mark same Reference numeral and omit explanation with the identical formation of first～the 3rd embodiment.In Figure 18, with Figure 10 likewise, the profile of upper side and the profile of lower side are represented the profile of head rod 7A position.In addition, omitted lower side and be the nut that moves side diagram with cylinder 35 etc.
The mold closing mechanism 401 of the 4th embodiment constitutes the drawing cylinder 214 that in the mold closing mechanism 301 of the 3rd embodiment, is provided with second embodiment.The drawing cylinder 214 and second embodiment likewise with between die sinking mold closing cylinder 13 and the attaching parts 215 that head rod 7A is connected, are connected in series with respect to die sinking mold closing cylinder 13.The action of the 4th embodiment is identical with the action of second embodiment.Wherein, head rod 7A is pulled out towards the rear side of fixed form 5F.
(the 5th embodiment)
Figure 19 is the side view of the mold closing mechanism 501 of expression the 5th embodiment of the present invention, comprises profile in the part.Figure 19 not only representes the die opening state of mold closing mechanism 501, and the state of the thick mould of maximum norm has been installed in expression.
In first～the 4th embodiment; Connecting rod 7 or 307 is not only fixed with the piston rod 13c of die sinking mold closing cylinder 13; And can be with respect to the connecting rod that is not provided with die sinking mold closing cylinder 13 (in first and second embodiment, being fixed form 5F, is moving die plate 5M in the 3rd and the 4th embodiment) adjustment position.Relative therewith, in the 5th embodiment, connecting rod 507 constitutes can be with respect to the piston rod 13c adjustment position of die sinking mold closing cylinder 13.Specifically, be described below.
Mold closing mechanism 501 has bottom connecting rod 507L and top connecting rod 507U.Below, sometimes bottom connecting rod 507L and top connecting rod 507U are abbreviated as " connecting rod 507 " and do not distinguish the two.Connecting rod 507 for example likewise is provided with four with first embodiment, sees from die sinking mold closing direction, roughly disposes symmetrically at left and right directions and above-below direction with respect to mould 101.That is, bottom connecting rod 507L and top connecting rod 507U respectively are provided with two.
The die sinking mold closing cylinder 13 and first embodiment likewise are arranged on the moving die plate 5M.Piston rod 13c via after the mould thickness adjusting device 515 stated be fixed on the end of bottom connecting rod 507L.That is, with piston rod 13c in the first embodiment through attaching parts 15 be fixed on the head rod 7A situation likewise, piston rod 13c is fixed on the connecting rod 507L of bottom.Therefore, with first embodiment likewise, utilize die sinking mold closing cylinder 13 can drive moving die plate 5M via bottom connecting rod 507L.
Mold closing mechanism 501 has: with the fixation side halfnut 23 of top connecting rod 507U and piston element 21 engagings, with the trimmer 25 of bottom connecting rod 507L and piston element 21 engagings, the top of top connecting rod 507U and moving die plate 5M engaging is moved side halfnut 27U and side halfnut 27L is moved in the bottom of bottom connecting rod 507L and moving die plate 5M engaging.Below, sometimes side halfnut 27U and bottom are moved in top and move side halfnut 27L and abbreviate " moving side halfnut 27 " as and do not distinguish the two.
On the connecting rod 507U of top, be formed with the fixation side that engages with fixation side halfnut 23 and be stuck the 507a of portion.On the connecting rod 507U of top, also be formed with and move top that side halfnut 27U engages with top and move side and be stuck the 507bU of portion.On the connecting rod 507L of bottom, be formed with and move bottom that side halfnut 27L engages with the bottom and move side and be stuck the 507bL of portion.Below, sometimes side is moved on top and be stuck the 507bU of portion and bottom and move side and be stuck the 507bL of portion and abbreviate " move side and be stuck the 507b of portion " as and do not distinguish the two.
Fixation side halfnut 23, fixation side be stuck the 507a of portion, move side halfnut 27, moving side, to be stuck the structure of 507b of portion and trimmer 25 identical with first embodiment.But fixation side is stuck the configuration scope of the 507a of portion, is stuck the configuration scope weak point of the 7a of portion than the fixation side of first embodiment.In addition, the configuration scope that side is stuck the 507bL of portion is moved in the bottom, and side is moved on the top that is stuck configuration scope, this embodiment of the 7b of portion than the mobile side of first embodiment, and to be stuck the configuration scope of the 507bU of portion long.
In addition, bottom connecting rod 507L engages through trimmer 25, and top connecting rod 507U engages through fixation side halfnut 23, and this is in order in die change, easily to extract top connecting rod 507U from fixed form 5F.
Matched moulds adjusting device 515 constitutes, and the piston rod 13c of die sinking mold closing cylinder 13 is engaged with bottom connecting rod 507L, and on the length direction of connecting rod 507, adjusts this clamped position, thereby can carry out the thick adjustment of mould.Mould thickness adjusting device 515 has: be fixed on plate 39 on the piston rod 13c, be located at plate 39 and the mould that can engage with bottom connecting rod 507L thick with halfnut 37 and drive the thick nut with halfnut 37 of mould with cylinder 35.
Plate 39 is made up of plate-shaped members such as metals, disposes relatively with the back side of moving die plate 5M.On plate 39, be formed with the through hole that bottom connecting rod 507L runs through.
The thick structure with halfnut 37 of mould is identical with fixation side halfnut 23 or mobile side halfnut 27.Mould is thick to be moved side with halfnut 37 with respect to the bottom and is stuck the 507bL of portion and engages.In addition, mould is thick to move side halfnut 27L likewise with halfnut 37 and bottom, can adjust on the length direction of connecting rod 507 and the bottom is moved side and is stuck the clamped position between the 507bL of portion.
The action of the mold closing mechanism 501 with above formation is described.The action of mold closing mechanism 501 in forming period at first is described.
Figure 20 be expression with the side view of mold closing mechanism 501 from the state transitions of Figure 19 to the state midway of matched moulds state (mould contact condition), comprise profile in the part.Figure 21 is the side view of expression mold closing mechanism 501 under the mould contact condition, comprises profile in the part.
In mold closing mechanism 501, mould is thick to be stuck in whole forming period with halfnut 37, and piston rod 13c and bottom connecting rod 507L are stuck.Therefore, mold closing mechanism 501 likewise moves through the mold closing mechanism 1 with first embodiment, makes forming period repeatedly.Fig. 4 also can be used in the 5th embodiment, and Figure 19 is equivalent to Fig. 1, and Figure 20 is equivalent to Fig. 2, and Figure 21 is equivalent to Fig. 3.
Shown in figure 20, in the 5th embodiment, when mold closing, die sinking mold closing cylinder 13 arrives rod end REP, and moving die plate 5M is also having distance, delta S place to stop from the mould contact.This is because mould thickness adjusting device 515 is adjusted to respect to the clamped position of bottom connecting rod 507L, when die sinking mold closing cylinder 13 arrives rod end REP, makes moving die plate 5M also have distance, delta S place to stop from the mould contact.
In the 5th embodiment, also have distance, delta S place to be arranged in the engaging process of the step ST3 (Fig. 4) of halted state from the mould contact, need not move side halfnut 27 and mobile side yet and be stuck the engagement adjustment between the 507b of portion at moving die plate 5M.
The engagement that why need not carry out moving side halfnut 27L in the bottom is adjusted, and the reasons are as follows.When the piston 13b of die sinking mold closing cylinder 13 was positioned at rod end REP, the thick distance that moves between the side halfnut 27L with halfnut 37 and bottom of mould was constant all the time.On the other hand; Use halfnut 37 and bottom to move distance between the side halfnut 27L to move as the bottom under the situation of integral multiple of spacing P that side is stuck the 507bL of portion in that mould is thick; Move among the side halfnut 27L one can move side and be stuck the 507bL of portion engagement with the bottom time with halfnut 37 and bottom in that mould is thick, another also can move side with the bottom and be stuck the 507bL of portion engagement.Therefore; Move the integral multiple that distance between the side halfnut 27L is set to spacing P if piston 13b mould when rod end REP is thick in advance with halfnut 37 and bottom; Then mould is thick moves side with halfnut 37 and bottom and is stuck the 507bL of portion and engages, so the bottom is moved that side halfnut 27L need not the engagement adjustment and can be moved side with the bottom and be stuck the 507bL of portion and engage.
Why do not need top to move the engagement adjustment of side halfnut 27U, the reasons are as follows.Top is moved side halfnut 27U and bottom and is moved position relation between the side halfnut 27L for constant.Top was moved side and is stuck the 507bU of portion and bottom and moves side and be stuck position relation between the 507bL of portion also for constant when in addition, the piston 21a of closing cylinder 17 was positioned at certain position (for example original position OP).Therefore; If set the position that side halfnut 27U etc. is moved on top; So that move side halfnut 27L (mould is thick in halfnut 37) in the bottom in the time of can engaging; Make top move side halfnut 27U and also can engage, then the bottom is moved side halfnut 27L and can be engaged, so top is moved side halfnut 27U and also can be engaged.
Then, the action of mold closing mechanism 501 in the thick adjustment of mould is described.
Figure 22 to Figure 24 is the side view of the mold closing mechanism 501 in the thick adjustment of expression mould, comprises profile in the part.Figure 26 is the flow chart of the thick adjustment of mould of explanation mold closing mechanism 501.
In step ST91, carry out the replacing of mould.When die change, fixation side halfnut 23 is thrown off, and top connecting rod 507U is pulled out from fixed form 5F.When new mould was installed, top connecting rod 507U was inserted among the fixed form 5F once more, and fixation side halfnut 23 is stuck.In addition, in the front and back of die change, the clamped position between fixation side halfnut 23 and the top connecting rod 507U is constant.The end and the positioning element butt of the fixed form 5F side of top connecting rod 507U, so that do not carry out the engagement adjustment of fixation side halfnut 23, this positioning element is used to make top connecting rod 507U to be positioned at the position of engagement of fixation side halfnut 23.
In Figure 22 to Figure 24 illustration be replaced by the situation of the thick mould of minimum modulus 103 from Figure 19 to the thick mould 101 of maximum norm shown in Figure 21.
In step ST92, mold closing mechanism 501 carries out the mould contact in order to make mould 103, makes moving die plate 5M move (advancing) towards the mold closing direction.Should move with the step S1 of Fig. 4 likewise; Under the piston rod 13c that utilizes mould thickness adjusting device 515 to make die sinking mold closing cylinder 13 and state that bottom connecting rod 507L engages; Through driving die sinking mold closing cylinder 13, bottom connecting rod 507L and moving die plate 5M are relatively moved carry out.
But, be under the situation such as mould of mould thickness at the die change thick from mould, only rely on identical the moving of step S1 with Fig. 4, can not carry out mould and contact.So, the clamped position between mold closing mechanism 501 change bottom connecting rod 507L and the piston rod 13c.Specifically, be described below.
Figure 22 representes following state, promptly when when the thick mould 101 of maximum norm is replaced by the thick mould 103 of minimum modulus, with the step S1 of Fig. 4 likewise, make die sinking mold closing cylinder 13 move to the state of rod end REP.In Figure 22, represent mobile side halfnut 27 and the position of moving die plate 5M among Figure 19 with double dot dash line.
Shown in figure 20, when mould 101 was installed, mould 101 was near to the position of leaving distance, delta S.But, because the mould thickness rate mould 101 of mould 103 is thin, therefore separate following distance, this distance is the distance of the thick difference of the mould between addition mould 101 on the distance, delta S and mould 103.Only rely on same moving, moving die plate 5M is advanced further with the step S1 of Fig. 4.
So of Figure 23, mold closing mechanism 501 makes that mould is thick throws off with halfnut 37, remove engaging between piston rod 13c and the bottom connecting rod 507L, make die sinking mold closing cylinder 13 move to head end HEP.Then, it is thick in halfnut 37 to engage mould once more.Thus, mold closing mechanism 501 can make moving die plate 5M move towards the mold closing direction through making die sinking mold closing cylinder 13 towards rod end REP side shifting once more.Thick during with halfnut 37 at the engaging mould, driving die sinking mold closing cylinder 13 meshes adjustment.
As stated; When moving die plate 5M being moved with the state-driven die sinking mold closing cylinder 13 of engaging piston rod 13c and bottom connecting rod 507L; Die sinking mold closing cylinder 13 has arrived under the situation of driving stage extreme position before moving die plate 5M arrives desired position, removes engaging of piston rod 13c and bottom connecting rod 507L, makes the in the opposite direction direction driving of die sinking mold closing cylinder 13 towards with mobile moving die plate 5M the time; With respect to bottom connecting rod 507L piston rod 13c is moved; And piston rod 13c is engaged with bottom connecting rod 507L, thus, can make moving die plate 5M move to desired position.The situation of moving die plate 5M when the die sinking direction moves is also identical.
In step ST93, the result that moving die plate 5M is advanced carries out the mould contact.Through carrying out the mould contact, moving die plate 5M is with respect to mobile being limited of bottom connecting rod 507L, and then the piston 13b of the die sinking mold closing cylinder 13 also optional position in stroke S stops.
In step ST94, mold closing mechanism 501 makes that mould is thick throws off with halfnut 37, removes engaging between piston rod 13c and the bottom connecting rod 507L.
In step ST95, mold closing mechanism 501 makes the piston 13b of die sinking mold closing cylinder 13 move to rod end REP (the driving stage extreme position of the driving direction during mold closing).Owing to removed engaging between piston rod 13c and the bottom connecting rod 507L, so piston rod 13c moves towards the rear side of moving die plate 5M with respect to bottom connecting rod 507L.So mold closing mechanism 501 is in state shown in figure 24.
In step ST96, mold closing mechanism 501 engaging moulds are thick in halfnut 37, and piston rod 13c is engaged with bottom connecting rod 507L.At this moment, mold closing mechanism 501 makes the piston 21a of closing cylinder 17 move from original position OP, carries out the thick engagement adjustment with halfnut 37 of mould.This moment piston 21a amount of movement to be that mould is thick move below the spacing P of a plurality of endless grooves that side is stuck the 507bL of portion with halfnut 37 and bottom.
Afterwards, mold closing mechanism 501 makes the piston 21a of closing cylinder 17 get back to original position OP.In addition, mold closing mechanism 501 moves towards head end HEP through the piston 13b that makes die sinking mold closing cylinder 13, and moving die plate 5M is moved towards the die sinking direction.Thus, mold closing mechanism 501 is in the die opening state suitable with Figure 19, and the thick adjustment of mould finishes.
Figure 25 is the thick adjustment result's of explanation mould figure.Specifically, Figure 25 representes following supposition state,, supposes that position (original position OP) and engaging that the piston 21a of closing cylinder 17 state when step ST96 finishes is got back to before the adjustment engagement of step ST96 move side halfnut 27 that is.This state is equivalent in Figure 20, engage the state that moves side halfnut 27.Can know that from the contrast of Figure 25 and Figure 20 the amount of movement of the piston 21a of closing cylinder 17 equates in the engagement adjustment of the distance, delta S that in Figure 20, has explained and step ST96.In addition, owing to the required amount of movement of engagement adjustment among the step ST96 changes corresponding to mould is thick, so the value of distance, delta S itself is different because of mould.
As stated; Because moving side halfnut 27 is set to; Be fastened on the connecting rod 507L of bottom with halfnut 37 as long as mould is thick; It can engage with connecting rod 507 when the piston 13b of die sinking mold closing cylinder 13 was positioned at rod end REP, therefore, and the engagement adjustment that the thick engagement adjustment with halfnut 37 of the mould of step ST96 is equivalent to move side halfnut 27.
From above action specification, can understand following content.
Why move side halfnut 27 and mobile side be stuck the 507b of portion can adjust clamped position be because; Because the thick variation of mould; Distance during the mould contact between moving die plate 5M and the fixed form 5F changes; And then, when moving relative position that side halfnut 27 and mobile side be stuck the 507b of portion and changed, also can make and move side halfnut 27 and be stuck the 507b of portion engaging with mobile side.That is, moving side halfnut 27 and mobile side is stuck the 507b of portion and carries out mold closing (with reference to Figure 20 etc.) and thick mould carries out need engaging with connecting rod 507 under mold closing (with reference to Figure 25 etc.) both of these case to minimum modulus at the mould thick to maximum norm.Therefore, to be stuck the adjustable range that the 507b of portion is set to clamped position be maximum norm thick (Lmax) to mobile side with more than poor (Ldif=Lmax-Lmin) of minimum modulus thick (Lmin).Be preferably, top is moved side and is stuck the 507bU of portion and is set to, and when being made as a spacing (P) to the required scope of engagement adjustment, the adjustable range of clamped position is below the Ldif+P.
Side is moved in the bottom, and to be stuck the 507bL of the portion pattern of wants be not only can move side halfnut 27L with the bottom and engage, and can engage with halfnut 37 with mould is thick.Because the thick rear side that is configured in moving die plate 5M (side halfnut 27L is moved in the bottom) with halfnut 37 of mould; Therefore, the bottom is moved side and is stuck the 507bL of portion and can engages and move the rear side that side is stuck the 507bU of portion towards top and extend with halfnut 37 with mould is thick.In other words, the bottom is moved side and is stuck the 507bL of portion and forms its length and surpass and to move side halfnut 27L with the bottom and engage required scope (Lmax-Lmin).Specifically, even under the state (Figure 19) of the thick driving stage extreme position that is positioned at the die sinking direction with halfnut 37 at moving die plate 5M of mould, also need and to engage.So bottom connecting rod 507L and bottom are moved side and be stuck the 507bL of portion and form more longways, even be positioned at moving die plate 5M under the state of driving stage extreme position of die sinking direction, also the rear side towards moving die plate 5M is outstanding.
In order to change at the stroke that mould is thick also to suppress die sinking mold closing cylinder 13 when changing, mould is thick to be moved side with halfnut 37 and bottom and is stuck the 507bL of portion and constitutes and can adjust clamped position.This adjustable range is preferably more than maximum norm is thick and minimum modulus is thick poor (Ldif), more preferably below Ldif+P.Mould is thick to move the adjustable range of clamped position that side is stuck the 507bL of portion for example greater than the stroke of closing cylinder 17 with halfnut 37 and bottom, and its size is not for being difficult to effective utilization if do not drive 13 in die sinking mold closing cylinder.
The adjustable range that the thick clamped position with halfnut 37 of adjustable range and the mould of clamped position of side halfnut 27L is moved in the bottom is overlapped.Specifically; These scopes are overlapping with such length; The piston 13b that promptly deducts die sinking mold closing cylinder 13 from the adjustable range (more than the Ldif) of clamped position when head end HEP, move side halfnut 27 and mould thick with the distance between the halfnut 37 (Dis: when move side halfnut 27 and mould thick with halfnut 37 near the time distance) after length (for example, Ldif+P-Dis).In other words, the bottom is moved side and is stuck the 507bL of portion distance B is is dwindled, and it is thick many more with the shared part of halfnut 37 to be moved side halfnut 27 and mould, can realize miniaturization.
In order to seek the miniaturization of die sinking mold closing cylinder 13, be preferably, the stroke S of die sinking mold closing cylinder 13 is below the Ldif+P.
According to the 5th above embodiment, can access and the same effect of first～the 4th embodiment.That is, can access following various effect: with simple structure can carry out the thick adjustment of mould effect, suppress to cause effect that the substantive stroke of die sinking mold closing cylinder 13 changes etc. because of the thick variation of mould.
On the connecting rod 507L of bottom, be formed with the bottom and move side and be stuck the 507bL of portion, a plurality of clamped positions that move the length direction of side halfnut 27 connecting rod 507L in the bottom can engage this bottom selectively and move side and be stuck the 507bL of portion.In addition, mould thickness adjusting device 515 can engage the bottom selectively at a plurality of clamped positions and moves side and be stuck the 507bL of portion.Therefore, side is moved in the bottom, and to be stuck the 507bL of portion shared with engaging of mould thickness adjusting device 515 through the engaging that is moved side halfnut 27, can seek the simplification of device.
In the 5th above embodiment; Fixed mould 101F and fixed mould 103F are respectively examples of fixed mould of the present invention; The 101M that moves moulds is respectively an example that moves moulds of the present invention with the 103M that moves moulds, and fixed form 5F is an example of the template of a side of the present invention, and moving die plate 5M is an example of the template of opposite side of the present invention; Trimmer 25 is examples of first holding section of the present invention; Die sinking mold closing cylinder 13 is examples of die sinking mold closing drive unit of the present invention, and cylinder barrel 13a is an example of fixed part of the present invention, and piston rod 13c is an example of movable part of the present invention; Mould thickness adjusting device 515 or mould are thick to be examples of the thick adjustment part of mould of the present invention with halfnut 37, and moving side halfnut 27 is examples of second holding section of the present invention.
(the 6th embodiment)
Figure 27 is the side view of the mold closing mechanism 601 of expression the 6th embodiment of the present invention, comprises profile in the part.Expression is corresponding to the state of Figure 20 of the 5th embodiment in Figure 27.
In mold closing mechanism 601, mould thickness adjusting device 615 has the connecting rod support functions, and this point is different with the mold closing mechanism 501 of the 5th embodiment.Specifically, be described below.
The plate 639 of mould thickness adjusting device 615 and moving die plate 650M are likewise supported along die sinking mold closing direction by base 3 movably.More particularly, plate 639 and the shared slide 9 of moving die plate 605M.In addition, the overlapping scope of moving range on slide 9 of plate 639 and moving die plate 605M is restricted to, and moving side in above-mentioned bottom with the thick clamped position that moves side halfnut 27L with halfnut 37 and bottom of mould, to be stuck the overlapping scope of the 507bL of portion identical.
In addition, on plate 639, the through hole 639h that bottom connecting rod 507L runs through forms size and the shape that bottom connecting rod 507L can be chimeric.Therefore, bottom connecting rod 507L by plate 639 supportings, can slide in through hole 639h in through hole 639h.The load of bottom connecting rod 507L is supported by base 3 via plate 639.
Because bottom connecting rod 507L is by 615 supportings of mould thickness adjusting device, so moving die plate 605M need not to support bottom connecting rod 507L.Therefore, through hole 605h moving die plate 605M, that bottom connecting rod 507L runs through forms bigger than the through hole 5h (Figure 19) of mold closing mechanism 501, so that it is with respect to bottom connecting rod 507L noncontact.
The action of mold closing mechanism 601 in forming period and the thick adjustment of mould is identical with the 5th embodiment.
According to the 6th embodiment, can access the effect identical with the 5th embodiment.That is, can access following various effects: relate to the simplification of the structure of the thick adjustment of mould, in forming period, have nothing to do and can utilize die sinking mold closing cylinder 13 etc. with total travel with the thick variation of mould.
And, in the 6th embodiment,, therefore can make the machining accuracy of moving die plate 605M low owing to can save the lining of the contact site between moving die plate 605M and the bottom connecting rod 507L.Consequently, processing charges reduce.In addition, in the die sinking mold closing, do not produce resistance to sliding between moving die plate 605M and the bottom connecting rod 507L, can alleviate the load of die sinking mold closing cylinder 13.Because the restrictions during the mould contact reduces, so the increase of the contact area of mould, and also can seek the minimizing of casting fin (cast is opened り).
The present invention is not limited to above embodiment, can implement with various forms.
Mold closing mechanism has more than and limits the use of in die casting machine.For example, also can be used for the resin of molten condition other molding equipments such as injection machine as moulding material.In addition, mold closing mechanism is not limited to be provided with respectively the drive unit that drive unit that the die sinking mold closing uses and matched moulds are used, and also can take into account die sinking mold closing and matched moulds by a drive unit.Also have, under situation about being arranged with drive unit and die sinking mold closing matched moulds with the drive unit branch, this matched moulds is not limited to make the piston that is built in template to be fastened on the connecting rod with drive unit.For example, also can be that the matched moulds of extrusion die plate is from behind used drive unit.
In the above-described embodiment, though illustration the drive unit (17) used of matched moulds be located at the situation of fixed form, the drive unit that matched moulds is used (17) also can be located on the moving die plate.At this moment, die sinking mold closing drive unit can be arranged on any in fixed form and the moving die plate, and this is identical with above-mentioned embodiment.
Form (the 5th and the 6th embodiment) about the adjustable position of the movable part of connecting rod and die sinking mold closing drive unit (13); In the above-described embodiment illustration following mold closing mechanism; Be that die sinking mold closing drive unit is arranged on the moving die plate, and connecting rod is stuck close on the fixed form in the die sinking mold closing.But, the mold closing mechanism of this form also can with the 3rd and the 4th embodiment likewise, die sinking mold closing drive unit is arranged on the fixed form, and in the die sinking mold closing, connecting rod is fastened on the moving die plate.
The quantity of connecting rod is not limited to four, can adopt suitable quantity.In addition, the connecting rod that engages with die sinking mold closing drive unit can suitably be selected from a plurality of connecting rods.The ratio of the quantity of connecting rod quantity that engages with die sinking mold closing drive unit and the connecting rod that do not engage with die sinking mold closing drive unit was not limited to 1: 1, can suitably set.
Drive units such as die sinking mold closing drive unit are not limited to hydraulic cylinder.For example, drive unit can be rotary electromotor and feed screw mechanism, also can be linear motor.Hydraulic cylinder is not limited to oil hydraulic cylinder.For example, hydraulic cylinder can be the hydraulic cylinder that makes water as working solution.
At die sinking mold closing drive unit is under the situation of hydraulic cylinder, in this embodiment illustration cylinder barrel be fastened on the template and piston rod is fastened on the situation on the connecting rod, still, also can be cylinder barrel and be fastened on the connecting rod and piston rod is fastened on the template.Relation between the flexible direction of die sinking mold closing direction and cylinder, also being not limited to when stretching cylinder is mold closing, also can be when shrinking cylinder is mold closing.Hydraulic cylinder is not limited on above-below direction relatively, and connecting rod disposes side by side.For example, hydraulic cylinder can dispose by relative connecting rod on left and right directions side by side.
The driving stage extreme position is the drive margin that aspect physics, is determined.For example, when drive unit was hydraulic cylinder, the driving stage extreme position was the end position of the mobile range of piston.This end position is the position of the end inwall butt of piston and cylinder chamber normally.For example, when drive unit comprised feed screw mechanism, the driving stage extreme position was the end position of the mobile range of nut.This end position is the position of the end of nut arrival thread groove normally.
In the die sinking mold closing, mold closing mechanism need not to utilize the total travel of die sinking mold closing drive unit.Even do not utilize total travel; Front and back at die change; If the clamped position of the thick adjustment part of adjustment mould is so that the variable quantity of the stroke in the die sinking mold closing is less than the thick variable quantity of mould, so compared with prior art; Also can effectively utilize die sinking mold closing drive unit, in this prior art, increase or reduce the stroke of die sinking mold closing with the variable quantity identical with the thick variable quantity of mould.
In embodiment illustration carry out the thick adjustment of mould during the driving stage extreme position of the driving direction when die sinking mold closing drive unit is driven to mold closing; So that the situation of second holding section (in the first and the 5th embodiment,, in the 3rd embodiment, being fixation side halfnut 23) engagement for moving side halfnut 27.But the engagement adjustment can be carried out after arriving the driving stage extreme position, perhaps also can before arriving the driving stage extreme position, carry out.In addition, first holding section, second holding section and the thick adjustment part of mould are not limited to comprise halfnut, can use various devices.
About the drawing cylinder,, be not limited at the cylinder shown in this embodiment so long as the cylinder that is connected in series with die sinking mold closing drive unit gets final product.For example, also can by a retracting cylinder constitute die sinking mold closing cylinder and drawing cylinder the two.In addition, connecting rod drawing function can be arranged in the form (the 5th and the 6th embodiment) of adjustable position of movable part of connecting rod and die sinking mold closing drive unit (13).
The thick adjustment of forming period or mould can automatically be carried out, and also can be that a part is operated by the staff.In the present invention also can be methods such as closing method, the thick methods of adjustment of mould as inventive point.Illustratively in embodiment be used to realize the thick adjustment of shaping modulus of periodicity, also can carry out the thick adjustment of mould through the method beyond the illustrative method in embodiment.

Claims (8)

1. mold closing mechanism has:
Fixed form, it keeps fixed die;
Moving die plate, it keeps moving mould and on die sinking mold closing direction, can moving relative to said fixed form;
Connecting rod, it extends on said die sinking mold closing direction and can run through said fixed form and said moving die plate;
First holding section, it can engage a template in said fixed form and the said moving die plate with said connecting rod;
Die sinking mold closing drive unit, it has fixed part and movable part, and this fixed part is located on another template in said fixed form and the said moving die plate, and this movable part this fixed part and said connecting rod relatively together drives towards die sinking mold closing direction; And
Control device, it can control said die sinking mold closing drive unit, so that under the state of the engaging of carrying out said first holding section, carries out the die sinking mold closing through driving said die sinking mold closing drive unit;
Said first holding section is made up of the thick adjustment part of mould, and the thick adjustment part of this mould is at the clamped position that can adjust on the length direction of said connecting rod between a said template and the said connecting rod;
Said connecting rod can said relatively template adjustment position on the length direction of said connecting rod.
2. mold closing mechanism has:
Fixed form, it keeps fixed die;
Moving die plate, it keeps moving mould and on die sinking mold closing direction, can moving relative to said fixed form;
Connecting rod, it extends on said die sinking mold closing direction and can run through said fixed form and said moving die plate;
First holding section, it can engage a template in said fixed form and the said moving die plate with said connecting rod;
Die sinking mold closing drive unit, it has fixed part and movable part, and this fixed part is located on another template in said fixed form and the said moving die plate, and this movable part this fixed part and said connecting rod relatively together drives towards die sinking mold closing direction;
Control device, it can control said die sinking mold closing drive unit, so that under the state of the engaging of carrying out said first holding section, carries out the die sinking mold closing through driving said die sinking mold closing drive unit; And
The thick adjustment part of mould, the thick adjustment part of this mould engages said connecting rod and said movable part, and on the length direction of said connecting rod, can adjust its clamped position,
Said connecting rod can said relatively movable part adjustment position on the length direction of said connecting rod.
3. according to claim 1 or claim 2 mold closing mechanism is characterized in that also having:
Second holding section, it can engage said another template and said connecting rod; And
Piston, it is indoor that it is incorporated in the cylinder of being located on the said template;
Said first holding section engages with said piston, and together can move relative to a said template along die sinking mold closing direction with said piston;
Under the state of the engaging of carrying out said first holding section and said second holding section,, can produce mold clamping force based on the elongation of said connecting rod through supplying with working solution to said cylinder chamber.
4. according to claim 1 or claim 2 mold closing mechanism is characterized in that also having:
Second holding section, it can engage said another template and said connecting rod; And
Piston, it is indoor that it is incorporated in the cylinder of being located on said another template;
Said second holding section engages with said piston, and together can move relative to a said template along die sinking mold closing direction with said piston;
Said die sinking mold closing drive unit engages with said piston, and together can move relative to a said template along die sinking mold closing direction with said piston;
Under the state of the engaging of carrying out said first holding section and said second holding section,, can produce mold clamping force based on the elongation of said connecting rod through supplying with working solution to said cylinder chamber.
5. according to claim 1 or claim 2 mold closing mechanism is characterized in that also having:
Second holding section, it can engage said another template and said connecting rod;
Said control device is controlled said die sinking mold closing drive unit and said second holding section when the matched moulds of forming period, so that carry out the engaging of said second holding section during driving stage extreme position of the driving direction when said die sinking mold closing drive unit is driven into said matched moulds.
6. mold closing mechanism as claimed in claim 5; It is characterized in that; Said control device is controlled thick adjustment part of said mould and said die sinking mold closing drive unit in the thick adjustment of mould; So that under the state that the engaging of carrying out mould contact and the thick adjustment part of said mould has been disengaged, carry out the engaging of the thick adjustment part of said mould during driving stage extreme position when making said die sinking mold closing drive unit move to said matched moulds, and; After a plurality of forming period in, keep the engaging of the thick adjustment part of said mould in the thick adjustment of said mould and carry out the die sinking mold closing.
7. mold closing mechanism as claimed in claim 5 is characterized in that also having:
Piston, it is indoor and can together move with said connecting rod that it is incorporated in the cylinder of being located on a said template or said another template;
The thick adjustment part of said mould can engage at every a plurality of clamped positions of arranging across a certain distance selectively; And engaging as follows; Under the state of the driving stage extreme position of the side that the driving direction when promptly when the matched moulds of forming period, making said piston be positioned at matched moulds is opposite; During driving stage extreme position when making said die sinking mold closing drive unit be driven into said matched moulds, said fixed die and said mobile mould are relative with the interval below the spacing.
8. mold closing mechanism as claimed in claim 7; It is characterized in that; When said control device made the engaging of the thick adjustment part of said mould in the thick adjustment of mould, the driving stage extreme position that makes the opposite side of the driving direction of said piston from matched moulds the time moved in interior scope and meshes adjustment a spacing.
CN2009101655230A 2008-07-29 2009-07-29 Mould closing device Active CN101637817B (en)

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JP2008195118A JP5179987B2 (en) 2008-07-29 2008-07-29 Clamping device
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JP2008195117A JP5269510B2 (en) 2008-07-29 2008-07-29 Clamping device
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