CN103722664A - Injection molding machine for molding double materials and control method thereof - Google Patents

Injection molding machine for molding double materials and control method thereof Download PDF

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Publication number
CN103722664A
CN103722664A CN201310187883.7A CN201310187883A CN103722664A CN 103722664 A CN103722664 A CN 103722664A CN 201310187883 A CN201310187883 A CN 201310187883A CN 103722664 A CN103722664 A CN 103722664A
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CN
China
Prior art keywords
decking
rotation
movable
mould
unit
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Granted
Application number
CN201310187883.7A
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Chinese (zh)
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CN103722664B (en
Inventor
加藤直纪
松下博乙
大河内康夫
大关泰明
佐治政光
苅谷俊彦
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U MHI Platech Co Ltd
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Mitsubishi Heavy Industries Plastic Techonologies Co Ltd
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Application filed by Mitsubishi Heavy Industries Plastic Techonologies Co Ltd filed Critical Mitsubishi Heavy Industries Plastic Techonologies Co Ltd
Priority to CN201310187883.7A priority Critical patent/CN103722664B/en
Priority claimed from CN2008801191687A external-priority patent/CN101888921B/en
Publication of CN103722664A publication Critical patent/CN103722664A/en
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Publication of CN103722664B publication Critical patent/CN103722664B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1615—The materials being injected at different moulding stations
    • B29C45/1628—The materials being injected at different moulding stations using a mould carrier rotatable about an axis perpendicular to the opening and closing axis of the moulding stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/68—Mould opening, closing or clamping devices hydro-mechanical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C2045/1784—Component parts, details or accessories not otherwise provided for; Auxiliary operations not otherwise provided for
    • B29C2045/1792—Machine parts driven by an electric motor, e.g. electric servomotor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76177—Location of measurement
    • B29C2945/76314—Auxiliary devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76595—Velocity
    • B29C2945/76598—Velocity linear movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76595—Velocity
    • B29C2945/76605—Velocity rotational movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76822—Phase or stage of control
    • B29C2945/76866—Mould closing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76929—Controlling method
    • B29C2945/76936—The operating conditions are corrected in the next phase or cycle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03—Injection moulding apparatus
    • B29C45/04—Injection moulding apparatus using movable moulds or mould halves
    • B29C45/0441—Injection moulding apparatus using movable moulds or mould halves involving a rotational movement
    • B29C45/045—Injection moulding apparatus using movable moulds or mould halves involving a rotational movement mounted on the circumference of a rotating support having a rotating axis perpendicular to the mould opening, closing or clamping direction

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The invention discloses an injection molding machine for molding double materials and a control method thereof. The injection molding machine comprises two groups of injection units (11, 12) used for respectively plastifying different resin materials for injection filling, wherein a mold clamping mechanism is a hydraulic mold clamping unit which can simultaneously clamp three groups of molding plates (2, 3, 9); a movable molding plate opening-closing unit (12) is driven by a motor; a rotary molding plate opening-closing unit (15) is a rotary molding plate opening-closing unit (14) which is driven by a motor; a rotary unit of the rotary molding plate (9) is a rotary driven device which is driven by a motor mounted on a reverse table (7).

Description

Injection molding machine for bimaterial molding and control method thereof
The application is dividing an application of that submit on June 4th, 2010, that application number is 200880119168.7, application that denomination of invention is " injection molding machine for bimaterial molding and control method thereof ".
Technical field
The present invention relates to following injection molding machine for bimaterial molding: from two groups of injecting units respectively to the mould by movable decking, the fixing mould of decking and be arranged at two die cavities that the mould of the two sides of the rotation decking between two deckings forms and inject different types of resin, make to rotate decking Rotate 180 degree and carry out two layers of injection, bi-material is one-body molded, especially the mobile unit that relates to the translational speed that is provided with the movable decking of easy control and rotation decking, injection molding machine for bimaterial molding and translational speed with the rotary unit of the rotary speed of easy control rotation decking, the control method of rotary speed.
Background technology
By injection moulding machine, obtain the example of forming method of the products formed of unlike material, different color, there is following method: make the injection mo(u)lding in primary side mould of a kind of resin material, these one-shot forming product are put into the mould of secondary side, in the die cavity of this secondary side and the gap of one-shot forming product, make another kind of resin material injection mo(u)lding, and there is a motion (with reference to patent documentation 1 and 2) of injection molding apparatus for various two forming materials
For this shaped device, conventional example shown in patent documentation 1 is described: it provides a kind of injection molding machine for bimaterial molding, from two groups of injecting units to the mould by movable plate, the mould of fixed disk and be arranged at a kind of resin material of interior primary side injection mo(u)lding of two die cavities that the mould of the two sides of the rotating disc between two dishes forms, make rotating disc Rotate 180 degree, to the die cavity of secondary side, inject another kind of resin material, make bi-material one-body molded, wherein, the movement of rotating disc is to be undertaken by intrinsic hydraulic cylinder, the switching of movable plate is by connecting movable plate, rotating disc, the plunger (ram) of the end of fixed disk and the tie-rod that arranges and be fixedly installed on the hydraulic cylinder that the cylinder of fixed disk forms and carry out, the rotation of rotating disc is to be undertaken by not specific rotary drive unit.In addition, by the matched moulds after movable plate, rotating disc, fixed disk mold closing, by being undertaken by be built in the hydraulic cylinder in large footpath of fixed disk and the closing liquid cylinder pressure that the plunger that can slide forms in this hydraulic cylinder, but the plunger in this large footpath have can with the function of tie-rod clutch.
The moulding of this injection moulding machine act as, with intrinsic hydraulic cylinder, make rotating disc near fixed disk side, by being located at end and the hydraulic cylinder between fixed disk of tie-rod, make movable plate move to fixed disk side, carry out mold closing, by described closing liquid cylinder pressure, make movable plate, rotating disc is matched moulds hydraulic oil is boosted together, a kind of resin material of die cavity injection mo(u)lding from from an injecting unit to primary side, make the anti-turnback of rotating disc, again make movable plate, rotating disc is matched moulds together, die cavity from from another injecting unit to secondary side is injected another kind of resin material, make bi-material one-body molded.
In addition, many materials injection moulding machine of the conventional example shown in patent documentation 2 is for using by fixed die, But moving die, the mould that the rotation mould that rotates between fixed die and But moving die forms and make the forming machine of many materials products formed, it is by forming as lower member: to as described in the first injection device of fixed die injected molten material, the second injection device to described But moving die injected molten material, make described rotation mould rotate freely and be supported on freely to But moving die side shifting the rotation die support device of fixed disk, and the compression unit that makes fixed die and But moving die compression matched moulds across described rotation mould.
The moulding effect of this injection moulding machine and the injection moulding machine of patent documentation 1 are almost identical.
Patent documentation 1: Japanese Patent Publication 3-51207 communique (the 1st figure)
Patent documentation 2: TOHKEMY 2006-168223 communique (Fig. 1)
But in the conventional example of patent documentation 1, the mould that carries out movable plate, rotating disc with hydraulic cylinder opens and closes, but mould weight is large, therefore be difficult to carry out the speed that the precision corresponding with the variations in temperature of hydraulic oil in work is high, the control of position, carry out at a high speed mould while opening and closing, may make mould damage.In addition, while making the mould switching of movable plate and the mould of rotating disc open and close horizontal movement by the hydraulic system that shares hydraulic pump, to each mould, open and close the instability of flow of the hydraulic oil of supplying with hydraulic cylinder, may cause action not steady, the high speed of the mould on-off action that therefore, hydraulic cylinder carries out is not easy to realize.Rotary drive unit for rotating disc does not mention, and still, rotating disc is also that weight is large, and turning moment is also large, therefore, while using hydraulic cylinder or fluid pressure motor, exists and above-mentioned same problem.
In addition, in the conventional example of patent documentation 2, the same with the conventional example of patent documentation 1, the driver element moving for mould is the drive unit that has used hydraulic cylinder, and replace hydraulic-driven also can use traveling priority unit, the rotary unit of servomotor and ball-screw, but in the explanation of embodiment, be hydraulic-driven.In addition, make to rotate mould and rotate and freely and to But moving die side shifting to be supported on freely the parts that stretch out from fixed disk, but owing to being cantilever section, be not the structure with abundant rigidity, therefore, be difficult to not deflection, taking the weight of is large accurately rotation mould.Between the stroke due to the fixed disk at original forming machine and movable plate, appended rotating disc, therefore, the spinning movement of the rotating mould large with respect to transverse width, is difficult to obtain the sufficient shift motion of movable plate and rotating disc.In addition, the parts that extend from fixed disk that mould is rotated in supporting are two-piece unit, must be installed on respectively up and down fixed disk, are difficult to make upper and lower rotary middle spindle concentric, may produce the unfavorable conditions such as adhesion, wearing and tearing of bearing portion when rotating mould rotation.In addition, in order to alleviate the weight of rotary die, two side molds and mould rotating shaft are made to integrative-structure, be therefore difficult for carrying out the replacing of mould.
Summary of the invention
The present invention be directed to above-mentioned problem develops, its object is to provide a kind of mould driver element, even if it is when the mould that makes the rotation mould of the die change of available standards, movable plate, rotating disc opens and closes high speed motion, also can high accuracy and stably carry out work running.
In order to solve the present invention's first technical scheme of described problem, a kind of injection molding machine for bimaterial molding is provided, have and the movable decking of drawer at movable side mould is being installed and the reversion platform that fixedly can arrange movably to same direction with movable decking between decking of fixed side mold is installed, can be on this reverses platform capable of rotating 180 deg and be provided with described drawer at movable side mould and fixed side mold chimeric and form the rotation decking of the mould of die cavity on two sides, make movable decking carry out the movable decking mould opening/closing unit of mould switching, make to rotate the rotation decking mould opening/closing unit that decking carries out mould switching, after closing molding, make the described three riggings closing unit of matched moulds simultaneously, and make different resin material difference plasticizations and two groups of injecting units of injection fillers, it is characterized in that, mold closing mechanism is to make the three riggings hydraulic mould-matching unit of matched moulds simultaneously, movable decking opening/closing unit is by electric motor driven movable decking opening/closing unit, rotation decking opening/closing unit is by electric motor driven rotation decking opening/closing unit, the rotary unit of rotation decking is served as reasons and is installed on the electric motor driven rotary drive unit of reversion platform.
The present invention's the second technical scheme is on the basis of the first technical scheme, injection molding machine for bimaterial molding is provided, it is characterized in that, hydraulic mould-matching unit is by a plurality of hydraulic cylinder devices that are built in fixing decking, be combined with the plunger of this air cylinder device and with can break-through the tie-rod of a plurality of front end troughs of belt of arranging of the mode of rotation decking and movable decking, and the split nut formation that is located at the outside of movable decking and can engages with the groove of described tie-rod, to make the three riggings hydraulic mould-matching unit of matched moulds simultaneously, movable decking opening/closing unit is to comprise by electric motor driven ballscrew shaft, with the movable decking opening/closing unit that is installed on the ball-screw nut screwing togather with described ballscrew shaft on movable decking, rotation decking opening/closing unit is to comprise by electric motor driven ballscrew shaft, with the rotation decking opening/closing unit that is installed on the ball-screw nut that with described ballscrew shaft screw togather of reversion on platform, the rotary unit of rotation decking is by pinion, to drive the rotary drive unit of the gear wheel of level, described pinion is located on the output shaft that is arranged at the motor on reversion platform, described gear wheel is arranged on the rotation decking that can arrange in 180 degree around the vertical central shaft positive and negative rotation of reversion platform.
The present invention's the 3rd technical scheme is on the basis of the first technical scheme, injection molding machine for bimaterial molding is provided, it is characterized in that, movable decking opening/closing unit comprises by being fixed on the electric motor driven ballscrew shaft on fixing decking or base station and being installed on the ball-screw nut screwing togather with described ballscrew shaft on movable decking.
The present invention's the 4th technical scheme is on the basis of the first technical scheme, injection molding machine for bimaterial molding is provided, it is characterized in that, the ball-screw nut screwing togather with described ballscrew shaft that movable decking opening/closing unit comprises ballscrew shaft and is fixedly installed on movable decking, described ballscrew shaft is by being fixed on the Motor Drive of reversion on platform, and via ball bearing rotation, is limited in direction of principal axis freely and supports on the supporting station that is fixedly installed on reversion platform.
The present invention's the 5th technical scheme is on the basis of the first technical scheme, injection molding machine for bimaterial molding is provided, it is characterized in that, the rotary unit of rotation decking via toothed belt or chain rack-and-pinion by being arranged at the gear wheel of the Motor Drive level on reversion platform, described gear wheel be arranged on can around the vertical central shaft Rotate 180 degree of reversion platform on the rotation decking that arranges.
The present invention's the 6th technical scheme is on the basis of the first technical scheme, injection molding machine for bimaterial molding is provided, it is characterized in that, the rotary unit of rotation decking is by being arranged on reversion platform and making the motor that rotates decking Rotate 180 degree directly link driving.
The present invention's the 7th technical scheme is on the basis of the first technical scheme, injection molding machine for bimaterial molding is provided, it is characterized in that, one group of injecting unit in two groups of injecting units is arranged at fixedly decking side and for to fixed mould injecting resin, another group injecting unit is arranged at movable decking side and for to moveable die injecting resin, and when work, follows the movement of movable decking and move.
The present invention's the 8th technical scheme is on the basis of the first technical scheme, injection molding machine for bimaterial molding is provided, it is characterized in that, on reversion platform, alignment pin is set, the rotation decking rotating on this reversion platform, at its rotation boundary place and described alignment pin butt, makes alignment pin project to following position: rotation decking on the position of the position of arrival one side's rotation boundary and rotation boundary in its backhaul with relative decking over against position.
The present invention's the 9th technical scheme is on the basis of the first technical scheme, injection molding machine for bimaterial molding is provided, it is characterized in that, comprise: make the three riggings hydraulically powered mold closing mechanism of matched moulds simultaneously, make movable decking with respect to the electric motor driven movable decking opening and closing device of fixing decking advance and retreat, make to rotate decking and reversion platform and the electric motor driven rotation decking opening and closing device of movable decking to equidirectional action, the electric motor driven reversion platform whirligig that the platform that makes to reverse rotates in the horizontal direction, and can to described each motor action, control the control device that carries out FEEDBACK CONTROL respectively.
The present invention's the tenth technical scheme is on the basis of the first technical scheme, injection molding machine for bimaterial molding is provided, it is characterized in that, comprise: make the three riggings hydraulically powered mold closing mechanism of matched moulds simultaneously, make movable decking with respect to the electric motor driven movable decking opening and closing device of fixing decking advance and retreat, make to rotate decking and reversion platform and the electric motor driven rotation decking opening and closing device of movable decking to equidirectional action, the electric motor driven reversion platform whirligig that the platform that makes to reverse rotates in the horizontal direction, and can to described each motor action, control the control device that carries out FEEDBACK CONTROL respectively, at least one motor in described each motor is servomotor.
The present invention's the 11 technical scheme is on the basis of the first technical scheme, injection molding machine for bimaterial molding is provided, it is characterized in that, comprise: make the three riggings hydraulically powered mold closing mechanism of matched moulds simultaneously, make movable decking with respect to the electric motor driven movable decking opening and closing device of fixing decking advance and retreat, make to rotate decking and reversion platform and the electric motor driven rotation decking opening and closing device of movable decking to equidirectional action, the electric motor driven reversion platform whirligig that the platform that makes to reverse rotates in the horizontal direction, and can to described each motor action, control the control device that carries out FEEDBACK CONTROL respectively, when the speed in described FEEDBACK CONTROL is controlled, speed during acceleration or while slowing down is controlled and along a straight line, is carried out acceleration or deceleration with certain amount of taper, and, from certain speed, start acceleration time or the speed while slowing down control, according to certain speed and acceleration space rate, or the conic section that a space rate of certain speed and deceleration becomes respectively tangent line carries out speed control.
The present invention's the 12 technical scheme is on the basis of the first technical scheme, injection molding machine for bimaterial molding is provided, it is characterized in that, comprise: make the three riggings hydraulically powered mold closing mechanism of matched moulds simultaneously, make movable decking with respect to the electric motor driven movable decking opening and closing device of fixing decking advance and retreat, make to rotate decking and reversion platform and the electric motor driven rotation decking opening and closing device of movable decking to equidirectional action, the electric motor driven reversion platform whirligig that the platform that makes to reverse rotates in the horizontal direction, and can to described each motor action, control the control device that carries out FEEDBACK CONTROL respectively, while positioning with pin on reversion platform, the decking that can face toward at the described rotation decking rotating on platform with reversion over against position to alignment pin patchhole, insert alignment pin.
The present invention's the 13 technical scheme is on the basis of the first technical scheme, injection molding machine for bimaterial molding is provided, it is characterized in that, comprise: make the three riggings hydraulically powered mold closing mechanism of matched moulds simultaneously, make movable decking with respect to the electric motor driven movable decking opening and closing device of fixing decking advance and retreat, make to rotate decking and reversion platform and the electric motor driven rotation decking opening and closing device of movable decking to equidirectional action, the electric motor driven reversion platform whirligig that the platform that makes to reverse rotates in the horizontal direction, and can to described each motor action, control the control device that carries out FEEDBACK CONTROL respectively, and possesses the control device that can carry out following control: while using finger setting on reversion platform, the decking that can face toward at the described rotation decking rotating on platform with reversion over against position to alignment pin patchhole, insert alignment pin, and, unanimously at the alignment pin center with alignment pin insertion apparatus at alignment pin patchhole center nearby locate, assigned position in the direction of rotation of the reversion platform in the rotation of reversion platform, the insert action of alignment pin is started.
The present invention's the 14 technical scheme, on the basis of the first technical scheme, provides injection molding machine for bimaterial molding, it is characterized in that, the Rib Thickness of described rotation decking reduces gradually from the mediad outside of rotation decking.
The present invention's the 15 technical scheme is on the basis of the first technical scheme, injection molding machine for bimaterial molding is provided, it is characterized in that, in rotation decking, possess the products formed demoulding action carried out in mould, the movable drive unit that movable member moves in the moulds such as action, gate valve action of inserting.
The present invention's the 16 technical scheme is on the basis of the first technical scheme, injection molding machine for bimaterial molding is provided, it is characterized in that, in rotation decking, possess the products formed demoulding action carried out in mould, the movable drive unit that movable member moves in the moulds such as action, gate valve action of inserting, and possess can be by the communicator of transceiving control signal when the action control of products formed stripper apparatus.
The present invention's the 17 technical scheme is on the basis of the first technical scheme, injection molding machine for bimaterial molding is provided, it is characterized in that, one group of injecting unit in two groups of injecting units is arranged in fixing decking side can be with respect to fixing decking advance and retreat, on the slip base station of movable decking side, be arranged to can be with respect to movable decking advance and retreat being fixed on for another group injecting unit, and, when the mould that carries out described movable decking opens and closes, on one side described another group injecting unit can move with the mould butt being installed on described movable decking on one side.
The present invention's the 18 technical scheme provides a kind of control method of injection molding machine for bimaterial molding, it is characterized in that, use the injection molding machine for bimaterial molding described in arbitrary technical scheme in the first to 17 technical scheme, at movable decking and the mold closing that loads the reversion platform of rotation decking, matched moulds, the injection fillers of molten resin, cooling, the die sinking of the reversion platform of movable decking and loading rotation decking is moved, 180 degree rotations of rotation decking, the mold closing again of the reversion platform of movable decking and loading rotation decking, in the molding procedure of matched moulds, by Motor Control, accelerate, speed maintains, deceleration is so that the mould switching traveling time of the reversion platform of movable decking and loading rotation decking is the shortest.
The present invention's the 19 technical scheme provides a kind of control method of injection molding machine for bimaterial molding, it is characterized in that, use the injection molding machine for bimaterial molding described in arbitrary technical scheme in the first to 17 technical scheme, when the rotation decking Rotate 180 that makes to reverse on platform is spent, by Motor Control Spin-up, rotary speed, maintain, rotate and slow down with the shortest rotational time of cost.
The present invention's the 20 technical scheme is on the basis of the 18 technical scheme, the control method of injection molding machine for bimaterial molding is provided, it is characterized in that, movable decking in movement or rotation decking are stopped to required distance as preventing collision distance, monitor the mobile front position separately of movable decking and mould and rotation decking and mould, at the relative position of the mobile front end of two deckings or each mould, enter while preventing collision distance, automatically make the decking that approaches a side in moving slow down or stop, collision when thereby the switching that prevents movable decking and rotation decking is moved.
The present invention's the 21 technical scheme is on the basis of the 18 technical scheme, the control method of injection molding machine for bimaterial molding is provided, it is characterized in that, movable decking in movement or rotation decking are stopped to required distance as preventing collision distance, monitor the mobile front position separately of movable decking and mould and rotation decking and mould, at the relative position of the mobile front end of two deckings or each mould, enter while preventing collision distance, automatically make the decking that approaches a side in moving slow down or stop, collision when thereby the switching that prevents movable decking and rotation decking is moved, and, make movable decking and rotation decking switching move, the rotation of rotation decking overlaps while carrying out, by the position of movable decking position and rotation decking, the geomery value of the anglec of rotation and each mould, calculate rotation decking in rotation decking rotation or its mould and fixedly decking or its mould, relative distance between rotation decking or its mould and movable decking or its mould, enter while preventing collision distance and automatically make approach a side the movement of decking or the rotation deceleration of rotation decking or stop.
According to the present invention, by making mould open and close motorized, can improve velocity accuracy, the positional precision of movable decking, rotation decking, even if run up, also can avoid collision, can prevent the mould breakage that collision causes.
In addition, be provided with each special-purpose mobile unit (ballscrew shaft, ball-screw nut, servomotor etc.) of the switching use of movable decking and rotation decking, therefore, movable decking and rotation decking can move simultaneously, consider the relative position of movable decking and rotation decking, can connect with extracting device of molded article on one side on one side and accurately it be controlled to mould switching, therefore, the shortening that is conducive to molding cycle, the position reproduction of mould is good, therefore the clamping mistake in the time of, can avoiding products formed to take out.
In addition, by the reversion of rotation decking is carried out to motorized motions, the acceleration-deceleration that can be rotated smoothly, the control of vibration and the control of High Rotation Speed when the beginning of the rotation while easily entering line inversion driving, inhibition rotation stop, therefore, even parallel, carry out the spinning movement of on-off action and the rotation decking of movable decking, rotation decking, also can be by avoiding the Position Control of contact, collision to realize the high periodization of moulding.
In addition, by forming by servomotor, carry out directly linking the rotary drive unit driving, not via gear, band, therefore, in the action of rotation decking, do not produce loosening (click), can carry out better Position Control.
In addition, the high speed of reversion and can shorten the time that products formed exposes at atmosphere for the shortening of the mould opening/closing time that reverses, can suppress to follow the temperature of products formed to reduce the unfavorable condition causing.When products formed exposes in atmosphere, the surface temperature of products formed reduces, and for the adhesion reduction of two materials of two material integrated moldings, therefore, is 40 seconds to 50 seconds degree, preferably below 30 seconds in the practicality that products formed exposes in atmosphere.More preferably below 20 seconds.In addition, the high accuracy of rotation stop position is controlled and to be conducive to easily and to carry out reliably chimeric with alignment pin, by the action of most decking is carried out to motorized motions, can make the spatter property of shaped device good.
Accompanying drawing explanation
Fig. 1 is the schematic top plan view of the injection molding machine for bimaterial molding of first embodiment of the invention;
Fig. 2 means the figure of spinning movement of rotation decking of the injection molding machine for bimaterial molding of Fig. 1;
Fig. 3 is the side view of the injection molding machine for bimaterial molding of Fig. 1;
Fig. 4 means that X-X that the summary of the rotation decking of Fig. 1 forms is to side view;
Fig. 5 is two forming materials process charts of injection molding machine for bimaterial molding of the present invention;
Fig. 6 is the figure that prevent collision method of the decking of the injection molding machine for bimaterial molding of explanation first embodiment of the invention while opening and closing;
Fig. 7 is the schematic top plan view of the injection molding machine for bimaterial molding of second embodiment of the invention;
Fig. 8 means the side view that the summary of the rotation decking of third embodiment of the invention forms;
Fig. 9 means the side view that the summary of the rotation decking of four embodiment of the invention forms;
Figure 10 is the key diagram of injecting unit B;
Figure 11 is the stereogram of rotation decking;
Figure 12 is the A-A profile of Figure 11.
Label declaration
2 fixing deckings
3 movable deckings
4 fixed side mold
5 drawer at movable side moulds
6A rotary die A
6B rotary die B
7 reversion platforms
9 rotation deckings
10,30 injection molding machine for bimaterial molding
11 injecting unit A
12 injecting unit B
14,46 movable decking opening/closing units
15 rotation decking opening/closing units
16,50,60 rotation decking rotary units
17 split nuts
18 tie-rods
21 servomotor A
22a, 32a, 47a ball-screw
24,33 ball-screw nuts
31 servomotor B
41 servomotor C
56 servomotor D
The specific embodiment
Below, with reference to accompanying drawing, explain the present invention.The present invention is not limited by the present embodiment.In addition, the inscape in following embodiment comprises key element or the identical in fact key element that those skilled in the art can easily expect.
(the first embodiment)
The injection molding machine for bimaterial molding of this embodiment, for the mould to by movable decking, fixedly decking mould and be arranged at two die cavities that the mould of the two sides of the rotation decking between two deckings forms and inject respectively different types of resin, make to rotate decking Rotate 180 degree and carry out dual injection, bi-material is one-body molded, wherein, the electric drive unit that the driving of the rotation of the movement of movable decking and rotation decking and rotation decking is easily controlled is set.
Below, the first embodiment is described with reference to the accompanying drawings.
Fig. 1 is the schematic top plan view of injection molding machine for bimaterial molding of the present invention.Fig. 2 means the figure of spinning movement of rotation decking of the injection molding machine for bimaterial molding of Fig. 1.Fig. 3 is the side view of the injection molding machine for bimaterial molding of Fig. 1.Fig. 4 means that X-X that the summary of the rotation decking of Fig. 1 forms is to side view.Fig. 5 is two forming materials process charts of injection molding machine for bimaterial molding of the present invention.Fig. 6 is the figure that prevent collision method of the decking of the injection molding machine for bimaterial molding of key diagram 1 while opening and closing.
The formation of injection molding machine for bimaterial molding 10 is described.In these figure, label 1 is base station, is fixedly installed the fixedly decking 2 that fixed side mold 4 is installed in one end of this base station 1.On base station 1, with fixedly decking 2 is relative, movably mounting have rotary die A(6A has been installed), rotary die B(6B) rotation decking 9 and the movable decking 3 of drawer at movable side mould 5 has been installed.
And as shown in Figure 4, rotation decking 9 is loaded on reversion platform 7, from fixed angle position positive and reverse return turnback, the alignment pin 44a by positioner 44 and hydraulic cylinder 48 be positioned at fixing decking 2, movable decking 3 over against angle position.
The reversion platform 7 that movable decking 3 and rotation decking 9 load is fixedly set in guide rail 19 guiding on base station 1 via not shown linear bearing and moves on base station 1.
In addition, guide preferably guide rail 19 of parts that movable decking 3 and reversion platform 7 move, but in the present invention, even such as sliding panel etc., do not have the obstacle in any practical application yet.
On the two sides of rotation decking 9, be provided with drawer at movable side mould 5 and fixed side mold 4 chimeric and form the identical shaped rotary die A(6A of die cavity), rotary die B(6B).From two groups of injecting unit A(11), the injecting unit B resin material plasticizing that makes to differ from one another and (12) are respectively to two die cavity injection fillers that fixing decking 2, rotation decking 9,3 while of movable decking formed during matched moulds by mold closing mechanism.
Injecting unit A(11) be arranged at fixedly decking 2 sides, for to by fixed side mold 4 and rotary die A(6A) (or rotary die B(6B)) the die cavity injecting resin that forms, another injecting unit B(12) be arranged at movable decking 3 sides, for to by drawer at movable side mould 5 and rotary die B(6B) (or rotary die A(6A)) the die cavity injecting resin that forms, when its work along with the switching of movable decking 3 is moved and moved.
At this moment, injecting unit B(12) carrying out large stroke together with movable decking 3 moves, and injecting unit B(12) load on slidingtype base station 64, this slidingtype base station 64 is fixedly linked on movable decking 3 via linking fixed part 63, therefore,, injecting unit B(12 mobile by guide rail 19 guiding by slidingtype base station 64) can be than the slow movement of movable decking 3, and the movement that can follow.
In addition, in Fig. 3, label 62 is injecting unit B(12) nozzle of use contact cylinder, can make injecting unit B(12) on slidingtype base station 64, slide.On the other hand, in Fig. 3, label 61 is injecting unit A(11) nozzle of use contact cylinder.
Figure 10 represents the form of nozzle contact.
As shown in figure 10, injecting unit B(12) nozzle 12a and the drawer at movable side mould 5 of use join, and are the state of nozzle contact when mould opens and closes, therefore, at mold closing, boost and finish in, can be from nozzle injecting resin, can high periodization.
In addition, when die sinking, nozzle 12a does not leave from drawer at movable side mould 5, therefore, can prevent that resin from hanging from the front end of nozzle 12a.
In addition, owing to can making injecting unit B(12) with movable plate one body action, therefore, the reduction of the impact in the time of can realizing action and start and when action stops, and prevent from impacting the injecting unit B(12 causing) and the collision of mould.
Below, the opening/closing unit of movable decking 3, rotation decking 9, the rotary unit of rotation decking 9 are described.
The bilateral symmetry of injection molding machine for bimaterial molding 10 a pair of movable decking opening/closing unit 14 that arranges by forming as lower member: be fixedly installed on base station 1 or the fixing servomotor A(21 on decking 2), ballscrew shaft A(22), be fixedly installed on base station 1 or fixedly on decking 2 and make ballscrew shaft A(22) rotation constrained in direction of principal axis and the supporting station 26 that supports freely, with ballscrew shaft A(22) the ball-screw nut A(24 that screws togather of ball-screw 22a), ball-screw nut A(24 is installed) and be fixedly installed on the nut support platform 25 on movable decking 3, and by servomotor A(21) revolving force to ballscrew shaft A(22) the Poewr transmission mechanism 23(that transmits for example, gear belt wheel and toothed belt, gear reduction unit etc.), a pair of servomotor A(21) run-in synchronism, make movable decking 3 open and close abreast mobile with fixing decking 2.
The bilateral symmetry of injection molding machine for bimaterial molding 10 a pair of rotation decking opening/closing unit 15 that arranges by forming as lower member: be fixedly installed on base station 1 or the fixing servomotor B(31 on decking 2), ballscrew shaft B(32), be fixedly installed on base station 1 or fixedly on decking 2 and make ballscrew shaft B(32) rotation constrained in direction of principal axis and the supporting station 34 that supports freely, with ballscrew shaft B(32) the ball-screw nut B(33 that screws togather of ball-screw 32a), ball-screw nut B(33 is installed) and be fixedly installed on the nut support platform 35 on reversion platform 7, and by servomotor B(31) revolving force to ballscrew shaft B(32) the Poewr transmission mechanism 36(that transmits for example, gear belt wheel and toothed belt, gear reduction unit etc.), a pair of servomotor B(31) run-in synchronism, the platform 7 that makes to reverse can open and close mobile with fixing decking 2 abreast.
Rotation decking rotary unit 16 as shown in Figure 4, be to make to rotate decking 9 to the rotary drive unit of both forward and reverse directions rotation half cycle, it is by forming as lower member: the servomotor C(41 that is installed on reversion platform 7), be installed on servomotor C(41) pinion 42, with the gear wheel 43 arranging integratedly with rotation decking 9 of pinion 42 engagements, rotate decking 9 at fixedly decking 2(or movably decking 3) position and at the alignment pin 44 of locating from the position of this position Rotate 180 degree.In addition, label 8 is and the lower shaft of rotation decking 9 one, can with respect to reversion platform 7, rotates via bearing.
Thus, can realize high-precision location.
When this is located, also can with described reversion platform 7 on rotation the decking that faces toward of above-mentioned rotation decking 9 over against position on, by above-mentioned hydraulic cylinder 48, to not shown alignment pin patchhole, insert alignment pin 44a.
In addition, also can possess the control device that can carry out following control: on the assigned position of the direction of rotation of the reversion platform position of the front consistent with the above-mentioned alignment pin center of alignment pin insertion apparatus, alignment pin patchhole center, in the rotation of reversion platform, the insert action of alignment pin 44a is started.
Thus, can realize the high periodization of moulding.
In addition, servomotor C(41 in the spinning movement of driver inversion platform 7) in control, while inserting alignment pin 44a, if stop servomotor C(41) the control of a part of Position Control, can't help the reverse location of platform 7 of servomotor, and undertaken by the mechanical profiling of alignment pin, can ignore the position of rotation failed areas of the reversion platform 7 that the backlash by pinion 42 and gear wheel 43 causes, can prevent fluctuation when micro-low speed rotation is controlled.In this situation, the patchhole of alignment pin 44a is preferably the cone-shaped slightly that pin side is large.
Hydraulic mould-matching unit as shown in Figure 1, for making three riggings 2,9, the 3 hydraulic mould-matching unit of matched moulds simultaneously, it is by forming as lower member: be built in four hydraulic cylinder 2a in fixing decking 2, be combined with the plunger 18b of this cylinder 2a and four tie-rods 18 at front end band cannelure 18a, the outside that is located at movable decking 3 arranging in the mode of the movable decking 3 of break-through and four groups of split nuts 17 that can engage with the cannelure 18a of tie-rod 18.
Below, the operation of two material injection mo(u)ldings of injection molding machine for bimaterial molding 10 is described with reference to Fig. 5.
As shown in Figure 5, make to rotate decking 9 and movable decking 3 after the initial mold closing of fixing decking 2 mold closings, utilize hydraulic cylinder 2a to carry out matched moulds, from injecting unit A(11) to by rotary die A(6A) and the Resin A of the die cavity injection fillers melting that forms of fixed side mold 4, this state is kept to certain hour cooling, estimate the curing time of Resin A, movable decking 3 and reversion platform 7 die sinkings of loading rotation decking 9 are moved and make each decking 2, 9, 3 separate sufficient interval, make to rotate after decking 9 Rotate 180 degree, again make movable decking 3 and rotation decking 9 mold closings.
This again the molding procedure after mold closing after carrying out the matched moulds that hydraulic cylinder 2a causes, from injecting unit A(11) to by rotary die B(6B) and the Resin A of the die cavity injection fillers melting that forms of fixed side mold 4, simultaneously, from injecting unit B(12) to by being attached to rotary die A(6A) products formed and the resin B of the die cavity injection fillers melting that forms of drawer at movable side mould 5, make two overlapping two forming materials product of material, this state is kept to certain hour cooling, estimate Resin A and curing time of B both sides, movable decking 3 and reversion platform 7 die sinkings that are mounted with rotation decking 9 are moved and make each decking 2, 9, 3 separate sufficient interval, after outside the two forming materials product taking-up machines that are attached on drawer at movable side mould 5, make to rotate decking 9 Rotate 180 degree.
Later movable decking 3 of this moment, rotation decking 9 and fixedly mold closing, the molding procedure of decking 2 repeat the molding procedure after above-mentioned mold closing again.
In Fig. 5, carry out injecting unit A(11 simultaneously) and injecting unit B(12) injection fillers action, but in the situation that in mould 4 and mould 5, carry out respectively different moulding, such as injection compression molding or foaming, gas assistant formation, insert moulding etc., injecting unit A(11) and injecting unit B(12) injection fillers move and also can carry out in order.
The decking weight that mould is installed is large, and the selection of translational speed and acceleration must be prudent.
For example, as the mould of making products formed (two forming materials product of size 1550mm * 1200mm), the weight of rotary die is 18 tons (9 tons/1 * 2), for making the weight of the rotation decking 9 of this mould rotation, it is 20 tons, therefore, it is large that the acceleration power needing while selecting higher translational speed becomes, or expend time in while accelerating, driver element is brought to larger burden.In addition, acceleration sharply, slowing down becomes the main cause of vibration.
Hydraulic drive unit is suitable for large driving force, and still, this unit, when moving heavy object, is difficult to correctly control position and expends time in.Recently, developed as the high capacity of the ball-screw of accurate driver element, for the mobile unit of quite heavy weight, also can use this ball-screw apparatus.The ball-screw apparatus being driven by servomotor carries out programme-control to the rotating speed of servomotor, can easily carry out the translational speed of driven thing and the control of stop position thus.
In the movable decking 3 of injection molding machine for bimaterial molding 10 and the mobile unit of rotation decking 9, also can use servomotor and ball-screw driver element, in not shown control device, will speed up (deceleration) and be programmed for the acceleration curve (for example Sin curve) of action smoothly, the program of establishment speed and Position Control, control servomotor, take and can set adjustably in the following manner input: so that movable decking 3 and the mould switching traveling time that is mounted with the reversion platform 7 that rotates decking 9 move as the shortest speed.By setting servomotor, can realize high-precision action.
In addition, also can arrange and can to each motor action, control the control device that carries out FEEDBACK CONTROL respectively, carry out FEEDBACK CONTROL.
Thus, the high speed in the cycle of two forming materials can be realized, in addition, high-precision action can be realized.
And, during speed under FEEDBACK CONTROL is controlled, during speed when accelerating or while slowing down is controlled, with certain amount of taper, along a straight line, carry out acceleration or deceleration, and, speed while accelerating from certain speed or while slowing down is controlled, and the conic section that becomes respectively tangent line according to a space rate of space rate of certain speed and acceleration or certain speed and deceleration carries out speed control, thereby can realize level and smooth control.
Thus, the impact while can mitigation speed switching, can prevent the overcurrent of motor, can prevent the damage of the action component that brought by impact and extend component life.
The revolution speed control method of rotation decking 9 is, in not shown control device, to set adjustably the mode of input rotary acceleration, rotary speed, work out the program that rotary speed is controlled, control servomotor, so that rotation decking 9 Rotate 180s on reversion platform 7 become the shortest rotational time while spending.
In addition, the thickness of the reinforcement 9a of above-mentioned rotation decking 9 as shown in Figure 11,12, also can reduce to alleviate its weight from the mediad outside of rotation decking gradually.
Thus, can follow the minimizing of the weight from pivot to distant place side to realize the reduction of rotatory inertia, its result can realize saves energy, high responsiveness, high-precision control.
In addition, also can be in rotation decking 9, possess the products formed demoulding in mould action, the movable drive unit that movable member moves in the moulds such as action, gate valve action of inserting, carry out the molding of products formed.
Thus, the products formed stripper apparatus that can not need the products formed demoulding to use in die side, can simplify mould structure.Its result, can be in different moulds the drive unit of movable member action in general above-mentioned mould, therefore, can be reduced in manufacturing cost different in every kind of products formed, mould that every kind of products formed all needs.
At this moment, in the action control of the stripper apparatus of products formed, also can possess and can accept by radio transmitting the communicator of control signal, by the simplification of distribution and the minimizing of distribution component, realize alleviating of weight.
Thus, do not need communications patching to be set as the slip form in wired situation, can simplify distribution.Its result, can make to rotate decking lightweight.
The decking collision method that prevents is each other, if stopping required distance, the reversion platform 7 of movable decking 3 or mounting rotation decking 9 do not charge in the drawings for preventing collision distance e(), monitor the position separately of movable decking 2, movable decking 3 and rotation decking 9, mutual relative position enters and prevents from automatically making to approach side's deceleration or stopping after collision distance e, prevents collision when movable decking 3 moves with the switching of rotation decking 9.
Movable decking 3 when movable decking 3, rotation decking 9 move and when rotation decking 9 rotates is described and rotates the action of decking 9 and prevent the example that collision is controlled, in Fig. 6, establish take and from the rotating shaft of rotation decking 9, on the direction vertical with rotating shaft, to fixing decking 2 sides, leave bight or the rotary die A(6A of the rotation decking 9 of swing-around trajectory that distance r2 is drawn farthest) bight be c2; If take and leave bight or the rotary die B(6B of the rotation decking 9 of swing-around trajectory that distance r1 is drawn farthest to movable decking 3 sides from rotating shaft on the direction vertical with rotating shaft) bight be c1, if be L2 from the rotating shaft of rotation decking 9 to the distance of c2, the distance of establishing from the rotating shaft of rotation decking 9 to c1 is L1.
Fig. 6 represents rotary die A(6A) bight c2 and rotary die B(6B) the situation of bight c1.L1 and the L2 variable that the rotation anglec of rotation of decking 9 and the value of above-mentioned r1, r2 are asked for uniquely of serving as reasons.
At this, if rotary die A(6A) and rotary die B(6B) be identical shaped, L1=L2.
If the thickness of fixed side mold 4 is a, the distance of establishing from the mould installed surface of fixing decking 2 to the rotating shaft of rotation decking 9 is b2, and the distance of establishing from the mould installed surface of fixing decking 2 to the end face of drawer at movable side mould 5 is b1.B1, b2 are variablees.
Rotary die A(6A) in rotation when fixed side mold 4 mold closings move, during b2-a-L2=e, make to rotate decking 9 and slow down or stop.
When the rotary die B(6B of drawer at movable side mould 5 in rotation) mold closing moves, during b1-b2-L1=e, make movable decking 3 slow down or stop.
While rotary die A(6A) moving to the direction of leaving fixed side mold 4, and drawer at movable side mould 5 is to leaving rotary die B(6B) direction die sinking while moving, first, movable decking 3 die sinkings are moved, from drawer at movable side mould 5 and rotary die B(6B) interval surpass moment of e, 9 die sinkings of rotation decking are moved, or start spinning movement.
In above-mentioned decking method for control speed, when the switching that also can carry out movable decking 3 and rotation decking 9 in overlapping is moved and rotates the rotation of decking 9, rotation decking 9 while calculating rotation decking rotation 9 rotation by movable decking position and the rotation position of decking and the anglec of rotation and the fixedly distance between decking 2, rotation decking 9 and movable decking 3, enter and while preventing collision distance e, automatically make to approach a side and slow down or stop, the collision while preventing rotation that the switching of movable decking 3 and rotation decking 9 moved, rotated decking 9.
In actual machine, while carry out the relative spacing that work running checks each decking, thus, can dwindle interval and further shorten the traveling time of each decking.
(the second embodiment)
Below, second embodiment of the invention is described.The difference of this second embodiment and the first embodiment is, shown in the schematic top plan view of injection molding machine for bimaterial molding 30 as shown in Figure 7, in reversion, be provided with the servomotor A(21 of the movable decking opening/closing unit 46 that drives movable decking 3 on platform 7) and the supporting station 26 of ballscrew shaft 47, in addition identical with the first embodiment, therefore to omit other structure explanation.
The advantage of this second embodiment is for can shorten ballscrew shaft 47, and therefore, the critical speed of ballscrew shaft 4 improves, and can improve the opening and closing speed of movable decking 3.In addition, owing to directly linking between rotation decking 9 and movable decking 3 with ball-screw, therefore, rotation decking 9 when detecting, controlling mould and open and close etc. and movable decking 3 quite apart from time, do not need to rotate decking 9 and the movably computing of the relative position of decking 3, can easily control.
(the 3rd embodiment)
Below, third embodiment of the invention is described.The difference of this second embodiment and the first embodiment is, as shown in the summary side elevation of the rotation decking of Fig. 8, rotation decking rotary unit 50 is by the servomotor C(41 that is installed on reversion platform 7), be installed on servomotor C(41) pinion 53, the gear wheel 52 arranging integratedly with rotation decking 9 with pinion 53 engagement, and the toothed belt 54 that is wound in the ring-type of pinion 53 and gear wheel 52 forms, to make to rotate decking 9 to the rotary drive unit of both forward and reverse directions rotation half cycle, in addition identical with the first embodiment, the explanation of therefore omitting other structure.
According to present embodiment, its advantage is, do not need directly to make gear wheel 52 and pinion 53 butts, can set arbitrarily the distance of the rotating shaft of gear wheel 52 and the rotating shaft of pinion 53, therefore, in the situation that gear wheel 52 near the situation of pinion 53 can not be set and produce the needs of change speed reducing ratio, can by axle base, do not restricted and can select gear shape.
The toothed belt 54 that replaces pinion 53, gear wheel 52 and ring-type can be also following formation: at servomotor C(41) output shaft on the reel sprocket wheel of path, on rotation decking 9, one volume is hung the sprocket wheel in large footpath; On two sprocket wheels, volume is hung endless-chain.
(the 4th embodiment)
Below, four embodiment of the invention is described.The difference of the 4th embodiment and first and second embodiment is, as shown in the summary side elevation of the rotation decking of Fig. 9, rotation decking rotary unit 60 is not used gear, toothed belt etc. for transferring power, but becomes the servomotor D(56 that is installed on reversion platform 7) with and the direct-drive mode that directly links of the rotating shaft 57 of the platform 55 of rotation decking 9 one.In addition identical with the first embodiment, therefore to omit other structure explanation.
Due to this servomotor D(56) direct-drive mode not via gear, band, so its advantage is, rotation decking 9, according to the indication rotation of program, does not produce click in action.
As described above, according to the present invention, a kind of injection molding machine for bimaterial molding can be provided, and it is provided with and makes the rotary speed that the translational speed of movable decking and rotation decking is held manageable mobile unit and made to rotate decking hold manageable rotary unit.

Claims (4)

1. an injection molding machine for bimaterial molding, has:
The movable decking of drawer at movable side mould is being installed and the reversion platform that fixedly can arrange movably to same direction with movable decking between decking of fixed side mold is being installed;
Can and on two sides, be provided with described drawer at movable side mould and described fixed side mold chimeric and form the rotation decking of the mould of die cavity around the vertical central shaft Rotate 180 degree of this platform that reverses;
Make described movable decking carry out the movable decking mould opening/closing unit of mould switching;
Make described rotation decking carry out the rotation decking mould opening/closing unit of mould switching;
After closing molding, make described movable decking, described fixedly decking, the described rotation decking closing unit of matched moulds simultaneously;
Can control the rotary unit of the rotation decking of the rotary speed of rotating decking;
Mobile unit, directly links between described rotation decking and described movable decking; And
Make different resin material difference plasticizations and two groups of injecting units of injection fillers,
It is characterized in that,
Described mold closing mechanism is to make described movable decking, described fixedly decking, the described rotation decking hydraulic mould-matching unit of matched moulds simultaneously,
Described movable decking opening/closing unit is by the first electric motor driven movable decking opening/closing unit,
Described rotation decking opening/closing unit is by the second electric motor driven rotation decking opening/closing unit,
The rotary unit of described rotation decking is served as reasons and is installed on the rotary drive unit that the three-motor of described reversion platform drives.
2. injection molding machine for bimaterial molding as claimed in claim 1, is characterized in that,
The injecting unit of a side in described two groups of injecting units is arranged at described fixedly decking side, the opposing party's injecting unit loads slidably on slidingtype base station, this slidingtype base station is linked to described movable decking via connecting member, and the action that can follow described movable decking is moved.
3. injection molding machine for bimaterial molding as claimed in claim 1, is characterized in that,
Be provided with alignment pin, described rotation decking, at its rotation boundary place and described alignment pin butt, makes alignment pin project to following position: described rotation decking on the position of the position of arrival one side's rotation boundary and rotation boundary in its backhaul with relative movable decking or fixedly decking over against position.
4. a control method for injection molding machine for bimaterial molding, is characterized in that,
Right to use requires the injection molding machine for bimaterial molding described in 1,
When described rotation decking Rotate 180 is spent, by three-motor control Spin-up, rotary speed, maintain, rotate and slow down with the shortest rotational time of cost.
CN201310187883.7A 2008-03-25 2008-03-25 Injection molding machine for bimaterial molding and control method thereof Active CN103722664B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107599433A (en) * 2017-09-04 2018-01-19 广东泰安模塑科技股份有限公司 A kind of in-mould injection and foaming cladding integral process
CN109968617A (en) * 2017-12-28 2019-07-05 海天塑机集团有限公司 A kind of horizontal rotation clamping of injection molding machine
CN110450347A (en) * 2019-08-15 2019-11-15 宁波博超模具有限公司 Bicolor injection mould
CN112895288A (en) * 2021-01-20 2021-06-04 大余县和锋电子有限公司 Plastic shell injection molding equipment for earphone production based on heat treatment principle
CN113021750A (en) * 2021-04-13 2021-06-25 福建富兰光学股份有限公司 Process method for surface modification injection molding of high polymer material

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Publication number Priority date Publication date Assignee Title
JP3380750B2 (en) * 1998-08-25 2003-02-24 株式会社ソディック Mold clamping device of injection molding machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107599433A (en) * 2017-09-04 2018-01-19 广东泰安模塑科技股份有限公司 A kind of in-mould injection and foaming cladding integral process
CN109968617A (en) * 2017-12-28 2019-07-05 海天塑机集团有限公司 A kind of horizontal rotation clamping of injection molding machine
CN110450347A (en) * 2019-08-15 2019-11-15 宁波博超模具有限公司 Bicolor injection mould
CN112895288A (en) * 2021-01-20 2021-06-04 大余县和锋电子有限公司 Plastic shell injection molding equipment for earphone production based on heat treatment principle
CN113021750A (en) * 2021-04-13 2021-06-25 福建富兰光学股份有限公司 Process method for surface modification injection molding of high polymer material

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