CN109848395A - Indirect liquid die forging device and its clamping mechanism - Google Patents
Indirect liquid die forging device and its clamping mechanism Download PDFInfo
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- CN109848395A CN109848395A CN201910156388.7A CN201910156388A CN109848395A CN 109848395 A CN109848395 A CN 109848395A CN 201910156388 A CN201910156388 A CN 201910156388A CN 109848395 A CN109848395 A CN 109848395A
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Abstract
The present invention relates to Metal Forming technical fields, and in particular to a kind of indirect liquid die forging device and its clamping mechanism can be improved the molding rigidity of mold, guarantee product accuracy.Indirect liquid die forging device clamping mechanism includes constraint frame and molding constraint mechanism, and molding constraint mechanism includes fixator and connector, and symmetrical link mechanism is provided between fixator and connector；The link mechanism includes the swing rod and connecting rod being hinged, and molding constraint mechanism further includes the position limiting structure for preventing connecting rod and swing rod from inwardly swinging；Protrusion is equipped in the swinging end of swing rod, it constrains frame and is equipped with the cunning cave being located on the outside of swing rod, when connector moves downwardly to molding completion by moved cross beam drive, connector continues to be pushed by moved cross beam so that link mechanism is swung out, and slides into the protrusion in sliding cave and with sliding cave cooperation to shore fixator realization mode locking.
Description
Technical field
The present invention relates to Metal Forming technical fields, and in particular to a kind of indirect liquid die forging device and its Mould locking machine
Structure.
Background technique
Liquid forging process be the liquid metal poured into the closed cavity being made of punch-pin and cavity plate is imposed it is higher
Mechanical pressure makes liquid metal eliminate the casting flaw generated in process of setting and certain plastic deformation occurs, to obtain height
A kind of method of quality product has the characteristics that lowering energy-saving and stock utilization are high.According to the difference of pressure mode, liquid mould
Forging can be divided into direct liquid forging and indirect liquid die forging.Indirect liquid die forging is by one or more small pressure heads to closed mould cavity
Interior liquid metal, which applies higher local pressure, makes its molding, and in this case, which mentions simultaneously
For mold clamping force and extruding force, double action hydraulic press is generally used.The moved cross beam of hydraulic press can the upper mold with hydrodynamic forging mould into
Row die open/close movement, central hydraulic cylinder (pressurized cylinder) band dynamic head carry out extrusion forming movement.
Liquid forging generally requires the pressure for applying 30~120MPa to liquid or semi-solid-state metal.Due to indirect liquid mould
Contoured squeeze board cross sectional dimensions is smaller when forging, and the pressure of required pressurized cylinder is smaller；Gold under extruding force effect, in closed mould cavity
Category can generate corresponding swollen mould power, and the axial force for mould power that this is swollen is substantially proportional to the cross-sectional area of die cavity, when the cross of liquid forging
When sectional area is much larger than the cross section of contoured squeeze board, it is desirable to molding equipment must have enough mold clamping forces, otherwise, upper mold meeting
It is moved up because of mold clamping force deficiency, causes not add pressure, or even flash and overlap occur, parts quality does not reach requirement.Therefore mesh
The mold clamping force of preceding equipment, which becomes, limits the big molding key factor of sectional dimension liquid forging, so very it is necessary to ground to propose one kind
Mould-locking structure, the rigidity of Lai Tigao mold and the precision for guaranteeing liquid forging product.
Summary of the invention
The purpose of the present invention is to provide a kind of clamping mechanisms, can be improved the molding rigidity of mold, guarantee product accuracy；
Another object of the present invention is to provide a kind of indirect liquid die forging device, molding rigidity height, to mold after the molding of upper and lower mould
It is locked, the tendency that upper and lower intermode divides mould can be prevented in liquid forging molding, guarantee the precision of liquid forging product.
To achieve the above object, indirect liquid die forging device of the invention adopts the following technical scheme that
Indirect liquid die forging device, including upper die and lower die and clamping mechanism, the clamping mechanism include constraint frame and mold about
Beam mechanism, the molding constraint mechanism include fixator and connector, fixator for fixing upper mold, connector be used for it is hydraulic
The moved cross beam of machine connects, and symmetrical link mechanism is provided between fixator and connector；The link mechanism includes
Hinged swing rod and the hinged connecting rod of connector, are hinged between connecting rod and swing rod with fixator, and molding constraint mechanism also wraps
Include the position limiting structure for preventing connecting rod and swing rod from inwardly swinging when link mechanism is swung；It is provided in the swinging end of the swing rod convex
Portion, the constraint frame are equipped with the cunning cave being located on the outside of swing rod, move downwardly to molding by moved cross beam drive in connector
When completion, connector continues to be pushed by moved cross beam so that link mechanism is swung out, make the protrusion slide into sliding cave and with
Sliding cave cooperation realizes mode locking to shore fixator.
The beneficial effect is that: the moved cross beam of hydraulic press, which only needs to provide, drives upper mold to make open mold movement and make to put
Bar slides into the power in sliding cave, therefore hydraulic press needs output pressure very little to be offered, after the protrusion of swing rod slides into sliding cave,
Swing rod is shored between constraint frame and corresponding fixator, and the constraint rigidity of indirect liquid forging device depends on swing rod at this time
With the rigidity of constraint frame, and it is no longer dependent on pressure provided by hydraulic press, as long as the intensity of swing rod and constraint frame is enough
Greatly, then the constraint rigidity of indirect liquid die forging device is with regard to sufficiently large.Clamping mechanism improves mold stiffness, carries out to mold rigid
Property obligate, to prevent from occurring in liquid forging molding up and down that intermode divides the tendency of mould, improve the performance and precision of product, institute
It needs the pressure of hydraulic press that can also correspond to become smaller, it in other words, can be bigger with shaped cross-sections product on the lesser hydraulic press of tonnage
Liquid forging also reduce production cost while guaranteeing product accuracy；And it works in indirect liquid die forging device, on
Mould open mold stroke depends primarily on the impulse stroke of hydraulic press, and unrelated with the impulse stroke of link mechanism, to make upper mold
There is biggish stroke, the liquid castable and forging demoulding when for liquid forging molding provide bigger operating space.
Further, the sliding cave has the transition face and supporting surface being smoothly connected, and when swing rod is swung out, protrusion is sliding
It crosses after transition face to support with supporting surface and contact, transition face is equipped with the convex globoidal towards lower die projection, slips over transition face in protrusion
The protrusion Shi Suoshu is supported with convex globoidal to be cooperated so that swing rod is mobile towards corresponding lower die.
The beneficial effect is that: when swing rod slides into sliding cave, convex globoidal keeps swing rod micro- towards upper mold with swing rod cooperation
Dynamic a distance generates a precompression to upper mold, improves the mode locking effect of clamping mechanism.
Further, the outside of hinge axes of the protrusion between the connecting rod and swing rod.
The beneficial effect is that: protrusion is arranged in the outside of the hinge axes between connecting rod and swing rod, is swung in swing rod
During, protrusion will not be interfered with other structures, guarantee that link mechanism being capable of steady operation.
Alternatively, the connecting rod is equipped with arc retaining groove, swing rod is equipped with spacer pin, and the swing rod is not sold by pressure time limit position
With the cooperation of the side cell wall block of arc retaining groove allow to have between swing rod and connecting rod angle, by swing rod when pressure around with fixation
The hinged articulated shaft of device is swung out, and the arc retaining groove and spacer pin constitute the position limiting structure.
The beneficial effect is that: position limiting structure is set in molding constraint mechanism, guarantees that link mechanism can swing out
Cooperate without being stuck, and by the cell wall of arc retaining groove with spacer pin to limit the relative rotation of swing rod and connecting rod
System, structure is simple and reliable, easy to process.
To achieve the above object, the clamping mechanism in the present invention adopts the following technical scheme that
Clamping mechanism, including constraint frame and molding constraint mechanism, the molding constraint mechanism includes fixator and connector, Gu
Determine device and is provided with a left side between fixator and connector for connecting with the moved cross beam of hydraulic press for fixing upper mold, connector
Right symmetrical link mechanism；The link mechanism include the swing rod hinged with fixator, with the hinged connecting rod of connector, connecting rod with
It is hinged between swing rod, molding constraint mechanism further includes the limit for preventing connecting rod and swing rod from inwardly swinging when link mechanism is swung
Bit architecture；The swinging end of the swing rod is provided with protrusion, the constraint frame is equipped with the cunning cave being located on the outside of swing rod, even
Connect device by moved cross beam drive move downwardly to molding complete when, connector continue by moved cross beam push so that link mechanism to
Outer swing slides into the protrusion in sliding cave and realizes mode locking with sliding cave cooperation to shore fixator.
The beneficial effect is that: when clamping mechanism and upper die and lower die are used cooperatively, the moved cross beam of hydraulic press only needs
It provides and drives upper mold to make open mold movement and swing rod is made to slide into the power in sliding cave, therefore hydraulic press needs output pressure to be offered
Power very little, after the protrusion of swing rod slides into sliding cave, swing rod is shored between constraint frame and corresponding fixator, at this time indirectly
The constraint rigidity of liquid forging device depends on swing rod and constrains the rigidity of frame, and is no longer dependent on provided by hydraulic press and presses
Power, as long as the intensity of swing rod and constraint frame is sufficiently large, then the constraint rigidity of indirect liquid die forging device is sufficiently large.Mode locking
Mechanism improves mold stiffness, carries out rigidity to mold and obligates, to prevent occurring intermode point up and down in liquid forging molding
The tendency of mould improves the performance and precision of product, and the pressure of required hydraulic press, which can also correspond to, to become smaller, in other words, tonnage compared with
It can also reduce and be produced into while guaranteeing product accuracy with the bigger liquid forging of shaped cross-sections product on small hydraulic press
This；And work in indirect liquid die forging device, upper mold open mold stroke depends primarily on the impulse stroke of hydraulic press, and with even
The impulse stroke of linkage is unrelated, so that upper mold is made to have biggish stroke, the liquid castable and forging demoulding when being liquid forging molding
Bigger operating space is provided.
Further, the sliding cave has the transition face and supporting surface being smoothly connected, and when swing rod is swung out, protrusion is sliding
It crosses after transition face to support with supporting surface and contact, transition face is equipped with the convex globoidal towards lower die projection, slips over transition face in protrusion
The protrusion Shi Suoshu is supported with convex globoidal to be cooperated so that swing rod is mobile towards corresponding lower die.
The beneficial effect is that: when swing rod slides into sliding cave, convex globoidal keeps swing rod micro- towards upper mold with swing rod cooperation
Dynamic a distance generates a precompression to upper mold, improves the mode locking effect of clamping mechanism.
Further, the outside of hinge axes of the protrusion between the connecting rod and swing rod.
The beneficial effect is that: protrusion is arranged in the outside of the hinge axes between connecting rod and swing rod, is swung in swing rod
During, protrusion will not be interfered with other structures, guarantee that link mechanism being capable of steady operation.
Alternatively, the connecting rod is equipped with arc retaining groove, swing rod is equipped with spacer pin, and the swing rod is not sold by pressure time limit position
With the cooperation of the side cell wall block of arc retaining groove allow to have between swing rod and connecting rod angle, by swing rod when pressure around with fixation
The hinged articulated shaft of device is swung out, and the arc retaining groove and spacer pin constitute the position limiting structure.
The beneficial effect is that: position limiting structure is set in molding constraint mechanism, guarantees that link mechanism can swing out
Cooperate without being stuck, and by the cell wall of arc retaining groove with spacer pin to limit the relative rotation of swing rod and connecting rod
System, structure is simple and reliable, easy to process.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the die opening state of the embodiment 1 of indirect liquid die forging device of the invention；
Structural schematic diagram of the indirect liquid die forging device that Fig. 2 is Fig. 1 when upper mold and lower die just mold；
Fig. 3 is the structural schematic diagram when protrusion of the swing rod of the indirect liquid die forging device of Fig. 1 enters the cunning cave for constraining frame；
Fig. 4 is structural schematic diagram when Fig. 1 middle infliction stress staff downlink is pressurizeed；
Fig. 5 is the cooperation schematic diagram of swing rod in the indirect liquid die forging device of Fig. 1, connecting rod and sliding cave；
Fig. 6 is the cooperation schematic diagram of swing rod and connecting rod in the indirect liquid die forging device of Fig. 1.
It is respectively marked in figure: 11. connectors；12. articulated shaft；21. connecting rod；22. swing rod；23. articulated shaft；24. protrusion；25.
Curved surface；26. swinging camber line；27. spacer pin；28. arc retaining groove；31. fixator；32. articulated shaft；41. pressure rod；Bottom on 42.
Plate；43. top plate；44. fixed plate；45. reset spring；46. cushion block；47. cope plate；48. pressure head；49. punch-pin；51. cavity plate；
52. mandril；61. constraining frame；62. sliding cave；63. supporting surface；64. transition face；7. blank.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
As shown in Figure 1, indirect liquid die forging device includes upper for the embodiment 1 of liquid forging device indirect in the present invention
Mould, lower die and clamping mechanism, the clamping mechanism include constraining frame and molding constraint mechanism, clamping mechanism and indirect liquid mould
Mold needed for forging processing technology is used cooperatively, and is capable of increasing the molding rigidity of mold, is improved product molding precision, be can be used for into
The bigger liquid forging of type sectional area.Molding constraint mechanism includes fixator 31 and connector 11, and fixator 31 is for installing fixation
Upper mold, connector 11 are connect with the moved cross beam of hydraulic press.In indirect liquid die forging processing, what is be commonly used is double acting hydraulic
The moved cross beam of machine, double action hydraulic press is connect with connector 11, and connector 11 can move along the vertical direction with moved cross beam
Upper mold is caused, far from lower die, to realize the molding and die sinking of mold close to lower die or upper mold.Connect between fixator 31 and connector 11
It is connected to link mechanism, drives fixator 31 is mobile to realize that upper mold and lower die are closed by link mechanism when connector 11 is mobile
Mould.Guiding movement can be realized by the guide post being independently arranged between connector 11 and fixator 31.
Link mechanism is arranged around around fixator 31 and connector 11 in the form of symmetrical, and left and right two
The link mechanism of side is disposed with two groups along the longitudinal direction respectively, and there are two every group of link mechanism settings, in other embodiments, even
Linkage can also be disposed with three groups, four groups etc. according to form circumferentially.Link mechanism includes connecting rod 21 and swing rod 22, swing rod
Hinged by articulated shaft 23 between 22 and connecting rod 21, the other end of connecting rod 21 is hinged by articulated shaft 12 and connector 11, swing rod
22 other ends are hinged by articulated shaft 32 and fixator 31, and the hinged shaft of swing rod 22 and connecting rod 21 deviates the central axes of swing rod 22.Pendulum
Bar 22 is arc surface close to the end face of one end of fixator 31, and fixator 31 is equipped with and is adapted to the arc surface of swing rod 22 and curvature
Identical mating surface, to increase the contact area of swing rod 22 Yu fixator 31.Swing rod 22 is close to 21 one end of connecting rod, that is, swing rod
Swinging end, has been wholely set protrusion 24 on the outside of swinging end, hinge axes of the protrusion 24 positioned at connecting rod 21 and swing rod 22 between outside
Side, the lateral surface of protrusion 24 are curved surface 25.
As shown in fig. 6, defining close to the side of the molding center line of upper mold and lower die is inside, connecting rod 21 is equipped with limit
Pin 27, swing rod 22 are equipped with the arc retaining groove 28 that passes through for spacer pin 27, connecting rod 21 and the swing rod 22 not work by connector 11
When firmly, spacer pin 27 is located at one end of arc retaining groove 28, and due to the effect of spacer pin 27 and arc retaining groove 28, swing rod 22 is outside
Roll tiltedly, swing rod 22 can not inwardly side oscillation and limit, but can outside side oscillation, spacer pin 27 is corresponding with arc retaining groove 28
The position limiting structure for preventing connecting rod or swing rod from inwardly swinging when link mechanism is squeezed is constituted, swing rod 22 is not sold by pressure time limit position
27 and arc retaining groove 28 side cell wall block cooperation make between swing rod 22 and connecting rod 21 have certain angle, by swing rod when pressure
22 can swing out around the articulated shaft with fixator 31.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, clamping mechanism further includes constraint frame 61, and constraint frame 61 is fixed on
On the workbench of hydraulic press.Constraint frame 61 includes bottom plate and the side plate being rigidly fixed on bottom plate vertically, and the top of side plate is logical
Transverse slat rigid connection is crossed to form frame structure.The inner sidewall for constraining the side plate of frame 61 is to increase along the direction internal diameter close to lower die
Big stepped sidewalls, the corner of stepped sidewalls form the cunning cave 62 for being engaged with the protrusion 24 on each swing rod 22,
Swing rod 22 outside beat and is fallen into sliding cave 62 when being pushed by connecting rod 21.When connector 11 moves downwardly to molding completion,
The moved cross beam band movement connector 11 of hydraulic press, which continues traveling downwardly, swings out link mechanism；Swing rod and connecting rod in link mechanism
When swing, the protrusion 24 slides into sliding cave 62 and realizes mode locking with the sliding cooperation of cave 62 to shore fixator, molds constraint mechanism
It further include the position limiting structure for preventing connecting rod and swing rod from inwardly swinging when link mechanism is swung.
As shown in figure 5, sliding the supporting surface 63 and the transition face being smoothly connected with supporting surface 63 that cave 62 includes support convex 24
64, supporting surface 63 is the adaptation curved surface being adapted to 25 curvature of curved surface on protrusion 24, which is cylindrical surface, and transition face 64 has
The protrusion part that the swing camber line 26 of swing rod 22 is protruded to lower die direction, falls into the process in sliding cave 62 in the protrusion of swing rod 22 24
In, which applies jacking force to the protrusion 24 of swing rod 22, is upper so that fixator 31 be made to push upper mold mobile to lower die
The molding of mould and lower die applies precompression, which forms on transition face 64 convex globoidal for being used for pushing tow swing rod 22, at it
In his embodiment, transition face 64 and convex globoidal thereon also can be omitted.
As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 4, upper mold includes the upper plate 42 being fixedly connected with fixator 31 and is arranged upper
Cushion block 46 below bottom plate 42, cushion block 46 altogether there are two and be located at the two sides in molding direction, between two cushion blocks 46 from top to bottom
The fixed plate 44 for being successively arranged the top plate 43 fixed with upper plate 42 and being fixed on top plate 43.The lower section of cushion block 46 is fixedly installed
There are cope plate 47 and punch-pin 49, fixed plate 44 is equipped with the pressure head for extending downwardly and sequentially passing through cope plate 47 and punch-pin 49
48, fixed plate 44 is linked together pressure head 48 and top plate 43 by screw, needs pressurized on pressure head 48 and punch-pin 49
Position is corresponding, and also press is equipped with reset spring 45 between top plate 43 and cope plate 47, and reset spring 45 can make top plate 43
It is located above when not stressing.Coaxially arranged perforation is respectively equipped on connector 11, fixator 31 and upper plate 42, it is hydraulic
The pressure rod 41 of machine is installed in perforation, and the upper end of pressure rod 41 and the pressurization the cylinder piston of hydraulic press connect, to apply to top plate 43
Add active force to realize indirect liquid die forging.
Lower die includes cavity plate 51 and mandril 52, and cavity plate 51 is fixed on the bottom plate of constraint frame 61, and mandril 52 is vertically square
To being actively plugged in bottom plate and cavity plate 51, mandril 52 is connect with the lower liftout tank of hydraulic press, and mandril 52 can be forged in workpiece liquid
Workpiece is ejected after molding.
Clamping mechanism of the invention when in use, in the condition shown in figure 1, it is molten to pour into a certain amount of metal in cavity plate 51
The moved cross beam band movement connector 11 of the blank 7 of body, hydraulic press moves down, and connector 11 passes through 22 band of connecting rod 21 and swing rod
Dynamic fixator 31 is mobile, so that the rapid downlink of upper mold be driven to carry out mould assembling action；During molding, due to spacer pin 27 with
The effect of arc retaining groove 28, the angle between swing rod 22 and connecting rod 21 remains unchanged, and after upper mold is contacted with lower die, connect with upper mold
31 stop motion of fixator stop because being provided with link mechanism between fixator 31 and connector 11 in fixator 31
After only moving, connector 11 can rely on the swing of link mechanism and still have certain space to continue to move, hydraulic press
Moved cross beam continues traveling downwardly, and connector 11 is mobile to the direction of fixator 31, and connecting rod 21 pushes swing rod 22 outside around articulated shaft 32
It swings, the protrusion 24 on swing rod 22 slides into the cunning cave 62 of constraint frame 61, and the curved surface 25 on the outside of protrusion 24 is along sliding cave 62
Transition face 64 slide when, the curved surface 25 of 64 pushing tow protrusion 24 of transition face, to apply axial active force to swing rod 22, this is right
Active force be referred to as that the molding of upper mold and lower die provides precompression, fixator 31 along molding direction make it is micro move slowly at, make
Upper mold is further locked with lower die.
The protrusion 24 of swing rod 22 enters in the supporting surface 63 in sliding cave 62, and moved cross beam stops downlink, at this time connecting rod 21 and pendulum
Bar 22 has greatly lateral reinforcing effect, is firmly locked the protrusion 24 of swing rod 22 in supporting surface 63 close to vertical
It is interior.At this point, the molding direction of swing rod 22 and the mold is close to consistent, and vertical plate and 22 rigidity of swing rod is big and each contact surface
Area is big, has clamping mechanism greatly along the rigid to resist the melt reaction in mold to the mold of molding direction
Swollen mould power, the molding rigidity of the mold upper and lower mould only with mold body, fixator 31, swing rod 22, the rigidity for constraining frame 61 and
The contact stiffness in each feature contacts face is related, and substantially unrelated with the pressurized cylinder output pressure of hydraulic press.
The pressurization the cylinder piston downlink of hydraulic press simultaneously drives 41 downlink of pressure rod, and pressure rod 41 drives top plate 43, fixed plate 44
And 48 downlink of pressure head, pressure and the pressure maintaining of needs are pressurized to the melt in die cavity by pressure head 48, makes melt under stress
It is liquid forging that solidification, which is cooled and shaped, and in this course, mold remains that higher molding is rigid under the action of swing rod 22
Degree.
Hydraulic press backhaul, moved cross beam drive clamping mechanism and upper mold uplink together, and swing rod is under the drive of hydraulic press
It is exited out of sliding cave 62 at a slow speed, so that the protrusion on swing rod and sliding cave 62 is detached from and is cooperated, realize release at a slow speed, moved cross beam continues back
Journey drives clamping mechanism and upper mold fast uplink to realize backhaul.Meanwhile pressurized cylinder resets, top plate 43, fixed plate 44 and pressure
First 48 under the action of reset spring 45 return, the lower ejection cylinder working of hydraulic press, by mandril 52 by liquid forger part from lower die
Stripping operation is completed in ejection.
It should be noted that can be used for can be very convenient for the indirect liquid die forging device and clamping mechanism in the present invention
Ground is for the occasion that needs mold in advance and mold clamping force and opening stroke are all very big such as low pressure casting, clamping mechanism and corresponding mould
The rigidity that can be improved entire mold when tool cooperation, can effectively reduce the load of equipment.
Using in the present invention indirect liquid die forging device and clamping mechanism following effect may be implemented:
1, the moved cross beam of hydraulic press is able to drive upper mold quickly close to lower die to be molded by molding constraint mechanism.
2, when molding completion, connector advance swings out swing rod, and swing rod upper convex portion, which slides into sliding cave, adds upper mold
Pressure, finally make swing rod shore fixator and constraint frame between, increase the constraint of upper die and lower die, improve upper mold, under
The rigidity of mould.
3, after completing processing, the moved cross beam backhaul of hydraulic press, swing rod makes the protrusion and sliding cave on swing rod to swing in situ
It is detached from cooperation, reduces the pressure to upper mold.
4, after swing rod swings go back to original position, the moved cross beam of hydraulic press continues backhaul, is driven by molding constraint mechanism
Mould and faster speed leave lower die, and are returned to upper mold on initial position.
In general, the indirect liquid die forging device in the present invention and clamping mechanism have " fast downlink, slow at work
The characteristics of speed pressurization, release, quick return at a slow speed ", clamping mechanism improves mold stiffness, carries out rigidity to mold and forces about
Beam improves the performance and precision of product, needs hydraulic press to prevent occurring the tendency that intermode up and down divides mould in liquid forging molding
The pressure of offer, which can also correspond to, to become smaller, and the tonnage of hydraulic press correspondence becomes smaller, in other words, can be on the lesser hydraulic press of tonnage
The bigger liquid forging of shaped cross-sections product also reduces production cost while guaranteeing product accuracy.Upper mold open mold stroke
The impulse stroke of hydraulic press is depended primarily on, and it is unrelated with the impulse stroke of link mechanism, so that upper mold is made to have biggish stroke,
Liquid castable and forging demoulding when for liquid forging molding provide bigger operating space.
The embodiment 2 of indirect liquid die forging device of the invention, the difference from embodiment 1 is that: sliding cave in embodiment 1
Transition face, supporting surface and protrusion lateral surface are curved surface, and in the present embodiment, supporting surface and transition face are inclined-plane, support
Face and the angle for molding direction are greater than transition face and mold the angle in direction, and sliding cave is matched by the inner sidewall on inclined-plane and constraint frame
It closes and is formed, the lateral surface of protrusion is inclined-plane.
The embodiment 3 of indirect liquid die forging device of the invention, the difference from embodiment 1 is that: protrusion is arranged in swing rod
Hinge axes outside, in the present embodiment, protrusion is integrally disposed upon the axial end of swing rod, and connecting rod is to far from protrusion
Direction inclination.
In other embodiments, cushion block can be set between connector 11 and fixator 31, under molding state, makes hydraulic
The mold clamping force of machine acts on mold, while preventing the excessive downlink of moved cross beam, guarantees position of the swing rod 22 in sliding cave 62, prevents
Connecting rod 21 overloads.
In other embodiments, position limiting structure may be replaced by other forms, such as is equipped with to be located on the connectors and connect
Backing pin on the inside of bar, connecting rod is merely able to outside side oscillation in the case where being limited by backing pin, or is provided with is located on the holder
Backing pin on the inside of swing rod, swing rod are merely able to outside side oscillation in the case where being limited by backing pin, the backing pin in both the above situation at
For position limiting structure.
For the mode locking in indirect liquid die forging device embodiment in the structure and foregoing invention of clamping mechanism in the present invention
Mechanism structure is identical, therefore repeats no more.
Claims (8)
1. indirect liquid die forging device, it is characterised in that: including upper die and lower die and clamping mechanism, the clamping mechanism includes about
Beam frame and molding constraint mechanism, the molding constraint mechanism include fixator and connector, and fixator is for fixing upper mold, even
Device is connect for connecting with the moved cross beam of hydraulic press, symmetrical link mechanism is provided between fixator and connector；Institute
Stating link mechanism includes the swing rod hinged with fixator and the hinged connecting rod of connector, is hinged between connecting rod and swing rod, is closed
Modular constraint mechanism further includes the position limiting structure for preventing connecting rod and swing rod from inwardly swinging when link mechanism is swung；In the swing rod
Swinging end is provided with protrusion, and the constraint frame is equipped with the cunning cave being located on the outside of swing rod, is driven in connector by moved cross beam
When moving downwardly to molding and completing, connector continues to be pushed by moved cross beam so that link mechanism is swung out, and makes the protrusion
It slides into sliding cave and realizes mode locking with sliding cave cooperation to shore fixator.
2. indirect liquid die forging device according to claim 1, it is characterised in that: the sliding cave has the mistake being smoothly connected
Face and supporting surface are crossed, protrusion slips over to support with supporting surface after transition face and contact when swing rod is swung out, and transition face is equipped with court
To the convex globoidal of lower die projection, when protrusion slips over transition face, the protrusion is supported with convex globoidal cooperates so that swing rod direction is corresponding
Lower die it is mobile.
3. indirect liquid die forging device according to claim 1 or 2, it is characterised in that: the protrusion is located at the connecting rod
The outside of hinge axes between swing rod.
4. indirect liquid die forging device according to claim 1 or 2, it is characterised in that: the connecting rod is kept off equipped with arc
Slot, swing rod are equipped with spacer pin, and the swing rod is not made to put by pressure time limit position pin and the side cell wall block cooperation of arc retaining groove
There is angle between bar and connecting rod, can be swung out around the articulated shaft hinged with fixator by swing rod when pressure, the arc
Retaining groove and spacer pin constitute the position limiting structure.
5. clamping mechanism, it is characterised in that: including constraint frame and molding constraint mechanism, the molding constraint mechanism includes fixing
Device and connector, fixator is for fixing upper mold, and connector with the moved cross beam of hydraulic press for connecting, fixator and connector
Between be provided with symmetrical link mechanism；The link mechanism includes the swing rod hinged with fixator, hinged with connector
Connecting rod, be hinged between connecting rod and swing rod, molding constraint mechanism further includes that connecting rod and pendulum are prevented when link mechanism is swung
The position limiting structure that bar is inwardly swung；The swinging end of the swing rod is provided with protrusion, the constraint frame, which is equipped with, is located at swing rod
The cunning cave in outside, when connector moves downwardly to molding completion by moved cross beam drive, connector continuation is pushed away by moved cross beam
It is dynamic so that link mechanism is swung out, slide into the protrusion in sliding cave and with sliding cave cooperation to shore fixator realization mode locking.
6. clamping mechanism according to claim 5, it is characterised in that: the sliding cave has the transition face being smoothly connected and branch
Support face, when swing rod is swung out, protrusion slips over to support with supporting surface after transition face and contact, and transition face is equipped with convex towards lower die
If convex globoidal, when protrusion slips over transition face, the protrusion and convex globoidal support cooperation so that swing rod is moved towards corresponding lower die
It is dynamic.
7. clamping mechanism according to claim 5 or 6, it is characterised in that: the protrusion be located at the connecting rod and swing rod it
Between hinge axes outside.
8. clamping mechanism according to claim 5 or 6, it is characterised in that: the connecting rod is equipped with arc retaining groove, on swing rod
Equipped with spacer pin, the swing rod by pressure time limit position pin and the cooperation of the side cell wall block of arc retaining groove make swing rod and connecting rod it
Between there is angle, can be swung out around the articulated shaft hinged with fixator by swing rod when pressure, the arc retaining groove and limit
Pin constitutes the position limiting structure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019101476785 | 2019-02-27 | ||
| CN201910147678 | 2019-02-27 |
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| Publication Number | Publication Date |
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| CN109848395A true CN109848395A (en) | 2019-06-07 |
| CN109848395B CN109848395B (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910156388.7A Active CN109848395B (en) | 2019-02-27 | 2019-03-01 | Indirect liquid forging device and clamping mechanism thereof |
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| CN113232251A (en) * | 2021-03-24 | 2021-08-10 | 深圳市文森特技术有限公司 | Automatic mode locking structure and miniwatt of response, big stroke injection mold |
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| CN113232251A (en) * | 2021-03-24 | 2021-08-10 | 深圳市文森特技术有限公司 | Automatic mode locking structure and miniwatt of response, big stroke injection mold |
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