CN106827313B - Mould opening and closing device of plastic product forming machine - Google Patents
Mould opening and closing device of plastic product forming machine Download PDFInfo
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- CN106827313B CN106827313B CN201710191622.0A CN201710191622A CN106827313B CN 106827313 B CN106827313 B CN 106827313B CN 201710191622 A CN201710191622 A CN 201710191622A CN 106827313 B CN106827313 B CN 106827313B
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- arm
- coil spring
- embracing
- moving frame
- mold
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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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/20—Opening, closing or clamping
- B29C33/22—Opening, closing or clamping by rectilinear movement
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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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/56—Opening, closing or clamping means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2022/00—Hollow articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
Abstract
A mold opening and closing device of a plastic product forming machine comprises a mold frame seat; a left and a right die moving frame; a left arm; a right arm; the arm-embracing driving mechanism is characterized by comprising a motor, a reduction gearbox, a swing arm, a driving shaft, a coil spring box, a coil spring foot positioning shaft sleeve, a limiting ring, a pull rod and a coil spring box shifting block, wherein the motor is matched with the reduction gearbox, the left end of the swing arm is sleeved on the driving shaft, the middle of the front side of the swing arm is provided with the guide block, the right end of the swing arm is hinged with the left end of the pull rod, the right end of the pull rod is hinged with the lower end of the right arm-embracing, the driving shaft is supported at the lower end of the left arm-embracing, the coil spring foot positioning shaft sleeve is positioned in the coil spring box, a coil spring is arranged in the coil spring box, a coil spring box cover is arranged at the open part of the front side of the coil spring box, the front side surface of the coil box cover is provided with the limiting ring seat, the limiting ring is arranged in the limiting ring seat cavity, and the coil spring box shifting block is fixed at the rear side of the coil spring box and matched with the guide block. The mold opening and closing speed is increased, and the molding efficiency is improved; no additional mode locking device is needed; the structure is simplified.
Description
Technical Field
The invention belongs to the technical field of plastic product forming machinery, and particularly relates to a mold opening and closing device of a plastic product forming machine.
Background
The plastic articles mentioned above are mainly, but not absolutely, hollow plastic articles such as various plastic containers, palletising drums or even trays (such as CN102407967B, CN103253442A and CN 102009774B), etc.
As is known in the art, the plastic product molding machine needs to perform mold opening and closing operation once for each product to be molded, and for this, reference may be made to CN2481510Y (opening and closing mechanism with improved structure), CN2481511Y (opening and closing mechanism), CN101890772B (opening and closing mechanism), CN101890805B (magnetic mold closing device of hollow plastic product molding machine), CN102357948A (toggle-type opening and closing mechanism), CN102848558B (mold closing device of hollow plastic product molding machine), CN103522528B (horizontal mold closing mechanism for blow molding), CN103587109B (mold closing device of hollow plastic product molding machine), and CN103538244B (mold closing device structure of hollow plastic product molding machine).
The common features of the mold opening and closing devices disclosed in the above-mentioned patent documents are that the oil cylinder is used to make the molds carried by the mold frame close or repel each other, so that the mold opening and closing speed is slow, which affects the molding efficiency of plastic products, and the corresponding mold locking oil cylinder and hydraulic power source are needed, which results in a complicated structure and is not cheap.
The motor drives the pair of die carriers and the dies arranged on the die carriers to move oppositely or repel each other, namely the motor is used as direct power to realize die opening and closing, so that the common defects can be made up to a great extent. Further, the published chinese patent documents show technical information of various motor-driven mold opening and closing devices, typically, the two patents are published with the numbers CN202097949U (a motor-driven mold opening and closing mechanism) and CN202053507U (a motor-driven mold opening and closing mechanism), which can bring out the technical effects described in the technical effect column of the specification, but the two patents have complicated structures and disadvantages, and particularly, a pressure-increasing mechanism is additionally provided without a mold locking function (see paragraph 0029 of the specification of the two patents), so that there is no teaching for designing a mold opening and closing device of a plastic product molding machine which has a relatively simple structure and is directly driven by a motor.
In view of the above-mentioned prior art, the applicant has made a long-lasting and useful search, and finally has developed the technical solutions described below and has conducted simulation tests in the applicant's equipment testing center with privacy measures, and the results have proved to be feasible.
Disclosure of Invention
The invention aims to provide a mold opening and closing device of a plastic product molding machine, which is beneficial to obviously increasing the mold opening and closing speed so as to improve the molding efficiency of plastic products, is beneficial to embodying a good mold locking function so as to eliminate the mold closing clearance and ensure the molding quality of the plastic products, and is beneficial to abandoning a hydraulic source so as to simplify the structure and embody the economy.
The task of the invention is completed in this way, a mold opening and closing device of a plastic product forming machine comprises a mold frame seat which is provided with an arm-holding cavity; the left die moving frame and the right die moving frame are movably arranged on the die frame seat in a state of facing each other; the upper end of the left holding arm is hinged with one side of the left moving die frame back to the right moving die frame, the middle part of the left holding arm is pivoted on the die frame seat at a position corresponding to the holding arm cavity, and the lower end of the left holding arm extends to the lower part of the die frame seat through the holding arm cavity; the upper end of the right holding arm is hinged with one side of the right moving die frame back to the left moving die frame, the middle part of the right holding arm is pivoted on the die frame seat at a position corresponding to the holding arm cavity, and the lower end of the right holding arm extends to the lower part of the die frame seat through the holding arm cavity; a armful arm driving mechanism for making the upper ends of the left and right armful arms swing or repel each other, characterized in that the armful arm driving mechanism comprises a motor, a reduction box, a swing arm, a driving shaft, a coil spring box, a coil spring foot positioning shaft sleeve, a spacing ring, a pull rod and a coil spring box shifting block, the motor is in transmission fit with the reduction box and is fixed with the rear side of the lower end of the left armful arm by the reduction box together with the motor, the left end of the swing arm is rotationally sleeved on the driving shaft, a guide block is fixed in the middle of the front side of the swing arm, the right end of the swing arm is hinged with the left end of the pull rod, the right end of the pull rod is hinged with the lower end of the right armful arm, the driving shaft is rotationally supported at the lower end of the left armful arm, the rear end of the driving shaft is in transmission connection with the reduction box, the front end of the driving shaft extends out of the front side of the lower end of the left armful arm, the foot positioning shaft sleeve is positioned in the coil spring box, the center of the coil spring foot positioning shaft sleeve is provided with a driving shaft fixing hole which is fixed with the front end of the driving shaft, a coil spring is arranged in the coil spring box and positioned between the inner wall of the coil spring box and the outer wall of the coil spring foot positioning shaft sleeve in a coiling state, one end of the coil spring is embedded on the inner wall of the coil spring box, the other end of the coil spring is embedded on the coil spring foot positioning shaft sleeve, a coil spring box cover is fixed at the front side opening part of the coil spring box, a coil spring foot positioning shaft sleeve matching hole is arranged at the center of the coil spring box cover, the coil spring foot positioning shaft sleeve matching hole is hollow sleeved at the front end of the coil spring foot positioning shaft sleeve, a limiting ring seat which protrudes from the front side surface of the coil spring box cover is formed on the front side surface of the coil spring box cover, a notch is formed on the limiting ring seat, and the limiting ring is arranged in a limiting ring seat cavity of the limiting ring seat and is fixed with the front end of the driving shaft, a stop block extends on the stop ring and at the area corresponding to the notch, and a coiling spring box shifting block is fixed at the rear side of the coiling spring box at the position corresponding to the guide block and is matched with the guide block.
In a specific embodiment of the invention, a left mould moving frame arm-embracing hinge seat is fixed on one side of the left mould moving frame, which is opposite to the right mould moving frame, the upper end of the left armful arm is hinged with the left end of a connecting rod plate through a connecting rod plate left pin shaft, the right end of the connecting rod plate is hinged with the left mould moving frame arm-embracing hinge seat through a connecting rod plate right pin shaft, and the middle part of the left armful arm is hinged with the mould frame seat through a left armful arm pin shaft at a position corresponding to the armful arm cavity; the upper end of the right arm is hinged to one side of the left mould moving frame in a mode that the right mould moving frame is hinged to the upper end of the left arm and the one side of the left mould moving frame is hinged to the right mould moving frame in a mode that the right mould moving frame is hinged to the left mould moving frame in a mode that the upper end of the right arm is hinged to the one side of the left mould moving frame in a mode that the right mould moving frame is hinged to the right mould moving frame in a mode that the upper end of the right arm is hinged to the left mould moving frame in a mode that the middle of the right arm is hinged to the mould frame seat through a right arm holding pin shaft in a position corresponding to the arm holding cavity.
In another specific embodiment of the invention, a form-shifting frame sliding guide rail is fixed on the form frame seat and at the position corresponding to the front side and the rear side of the arm-embracing cavity in the length direction, a right form-shifting frame sliding block is fixed at the bottom of the left form-shifting frame and at the position corresponding to the form-shifting frame sliding guide rail, a right form-shifting frame sliding block is fixed at the bottom of the right form-shifting frame and at the position corresponding to the form-shifting frame sliding guide rail, and the left form-shifting frame sliding block and the right form-shifting frame sliding block are in sliding fit with the form-shifting frame sliding guide rail.
In another specific embodiment of the invention, a left arm holding cavity is formed at the lower end of the left arm holding, a right arm holding cavity is formed at the lower end of the right arm holding, a left arm-embracing bearing is respectively embedded on the front cavity wall and the rear cavity wall of the left arm-embracing cavity, a right arm-embracing bearing is respectively embedded on the front cavity wall and the rear cavity wall of the right arm-embracing cavity, the driving shaft is in running fit with the left armful arm bearing, the left end of the swing arm is at the position corresponding to the left armful arm cavity and is sleeved on the driving shaft through the swing arm bearing, the left end of the pull rod is connected with a pull rod left adjusting connector, the right end is connected with a pull rod right adjusting connector, the pull rod right adjusting connector extends into the right armful arm cavity and is hinged on a right adjusting connector pin shaft, and the right adjusting connector pin shaft is in running fit with the right arm-embracing bearing, and the right end of the swing arm is hinged with the left adjusting connector of the pull rod.
In a further specific embodiment of the invention, the reduction gearbox is fixed with the rear side of the lower end of the left arm through a reduction gearbox seat, a reduction gearbox power output shaft matching hole is formed in the center of the rear end of the driving shaft, and the reduction gearbox power output shaft matching hole is in transmission matching with a reduction gearbox power output shaft of the reduction gearbox.
In yet another specific embodiment of the present invention, a left adjusting connector pin cavity is formed at the right end of the swing arm, a left adjusting connector pin hole is respectively formed at the front cavity wall and the rear cavity wall of the left adjusting connector pin cavity and at the positions corresponding to each other, and the pull rod left adjusting connector is hinged to the right end of the swing arm at the position corresponding to the left adjusting connector pin hole through a left adjusting connector pin shaft.
In a more specific embodiment of the present invention, a pair of stopper pin limiting legs are formed on a right end surface of the swing arm, and a pair of stopper pins are formed on the left adjustment link of the drawbar and at positions corresponding to the pair of stopper pin limiting legs, and the pair of stopper pins are engaged with the pair of stopper pin limiting legs.
In a further specific embodiment of the present invention, a driving shaft key is formed at the front end of the driving shaft, a coil spring leg positioning shaft sleeve key is formed on a hole wall of a driving shaft fixing hole of the coil spring leg positioning shaft sleeve, the limiting ring has a limiting ring driving shaft fitting hole, a limiting ring key is formed on a hole wall of the limiting ring driving shaft fitting hole, and the coil spring leg positioning shaft sleeve key and the limiting ring key are fixed to the driving shaft key.
In yet another specific embodiment of the present invention, a set of coil spring leg adjustment caulking grooves are formed in the inner wall of the coil spring box at intervals, a coil spring leg positioning caulking groove is formed in the outer wall of the coil spring leg positioning shaft sleeve, a coil spring leg is formed at each of one end and the other end of the coil spring, the coil spring leg at one end is fitted in one of the coil spring leg adjustment caulking grooves, and the coil spring leg at the other end is fitted in the coil spring leg positioning caulking groove.
In yet another specific embodiment of the present invention, the motor is a motor with forward and reverse rotation functions.
One of the technical effects of the technical scheme provided by the invention is that the arm-embracing driving mechanism adopts a motor, the motor drives a driving shaft through a reduction box, the driving shaft drives a coil spring through a coil spring foot positioning shaft sleeve and drives a coil spring box through the coil spring, then a coil spring box shifting block drives a swing arm through a guide block, and the swing arm drives a pull rod to enable a left arm and a right arm-embracing to swing or repel each other in opposite directions together with a left mold moving frame and a right mold moving frame respectively, so that the mold opening and closing speed is remarkably accelerated to improve the molding efficiency of plastic products; secondly, after the left and right mold moving frames are displaced oppositely and the molds are fully closed, the driving shaft is continuously rotated along with the continuous operation of the motor and is rotated to the degree that the limiting block of the limiting ring driven by the driving shaft is contacted with the end wall of the notch, so that the mold locking is realized, and a mold locking device is not required to be additionally arranged like the prior art; thirdly, because the oil cylinder is abandoned, the structure is obviously simplified and the economy is embodied without the support of a hydraulic source.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention.
Fig. 2 is a detailed configuration diagram of the arm embracing driving mechanism shown in fig. 1.
Fig. 3 is a schematic view of the fitting of the coil box driver shown in fig. 2 to the guide block.
Detailed Description
In order to clearly understand the technical spirit and the advantages of the present invention, the applicant below describes in detail by way of example, but the description of the example is not intended to limit the technical scope of the present invention, and any equivalent changes made according to the present inventive concept, which are merely in form and not in material, should be considered as the technical scope of the present invention.
In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are based on the position state of fig. 1, and thus, it should not be understood as a particular limitation to the technical solution provided by the present invention.
Referring to fig. 1, there is shown: a mould frame seat 1 with an arm-holding cavity 11 is formed; a left moving die frame 2 and a right moving die frame 3, wherein the left and right moving die frames 2, 3 are movably arranged on the die frame seat 1 in a state of facing each other; the upper end of the left holding arm 4 is hinged with one side of the left moving die frame 2 back to the right moving die frame 3, the middle part of the left holding arm 4 is pivoted on the die frame seat 1 at a position corresponding to the holding arm cavity 11, and the lower end of the left holding arm extends to the lower part of the die frame seat 1 through the holding arm cavity 11; the upper end of the right holding arm 5 is hinged with one side of the right mould moving frame 3 back to the left mould moving frame 2, the middle part of the right holding arm 5 is pivoted on the mould frame seat 1 at a position corresponding to the arm holding cavity 11, and the lower end of the right holding arm extends to the lower part of the mould frame seat 1 through the arm holding cavity 11; and a clasping arm driving mechanism 6 for swinging or repelling the upper ends of the left and right clasping arms 4 and 5 towards each other. In the present embodiment, the arm embracing driving mechanism 6 is disposed at the lower end of the left arm embracing 4, however, if the arm embracing driving mechanism 6 is disposed at the lower end of the right arm embracing 5, it should be regarded as an equivalent technical means and still fall within the technical scope of the present disclosure.
Referring to fig. 2 and 3 in combination with fig. 1, the arm-embracing driving mechanism 6 includes a motor 61, a reduction box 62, a swing arm 63, a driving shaft 64, a coil spring box 65, a coil spring foot positioning sleeve 66, a stop collar 67, a pull rod 68 and a coil spring box shifting block 69, the motor 61 is in transmission fit with the reduction box 62 and is fixed by the reduction box 62 together with the motor 61 to the rear side of the lower end of the left arm-embracing 4, the left end of the swing arm 63 is rotatably sleeved on the driving shaft 64, a guide block 631 is fixed in the middle of the front side of the swing arm 63, the right end of the swing arm 63 is hinged with the left end of the pull rod 68, the right end of the pull rod 68 is hinged with the lower end of the right arm-embracing 5, the driving shaft 64 is rotatably supported at the lower end of the left arm-embracing 4, the rear end of the driving shaft 64 is in transmission connection with the reduction box 62, the front end of the driving shaft 64 extends out of the front side of the lower end of the left arm-embracing 4, the coil spring positioning sleeve 66 is located in the coil spring box 65, the center of the coil spring foot positioning boss 66 has a drive shaft fixing hole 661 which is fixed with the front end of the drive shaft 64, a coil spring 651 (also referred to as "coil spring", hereinafter the same is true) which is provided in the coil spring case 65 between the inner wall of the coil spring case 65 and the outer wall of the coil spring foot positioning boss 66 in a coiled state around the coil spring foot positioning boss 66, one end of the coil spring 651 is fitted on the inner wall of the coil spring case 65, and the other end of the coil spring 651 is fitted on the coil spring foot positioning boss 66, a coil spring case cover 652 is fixed at the front side opening portion of the coil spring case 65 by a coil spring case cover fixing screw 6523, a coil spring foot positioning boss fitting hole 6521 which is fitted empty at the front end of the coil spring foot positioning boss 66 is provided at the center position of the coil spring case cover 652, and a stopper ring holder 6522 which is protruded from the front side surface of the coil case cover 652 and has a C-like shape, the retainer ring 6522 is formed with a notch 65221, the retainer ring 67 is disposed in the retainer ring seat cavity 65222 of the retainer ring 6522 and fixed to the front end of the drive shaft 64, a stopper 671 is extended from a region corresponding to the notch 65221 on the retainer ring 67, that is, the stopper 671 extends to the notch 65221, the coil box paddle 69 is fixed to the rear side of the coil box 65 at a position corresponding to the aforementioned guide 631 by a paddle fixing screw 691 and is engaged with the guide 631, specifically, as shown in fig. 3, a guide runner 692 is formed at an end of an edge portion of the coil box paddle 69 protruding out of the rear side of the coil box 65, and the guide runner 692 is engaged with the guide 631, that is, the guide 631 protrudes into the guide runner 692.
Please refer to fig. 1, a left mold moving frame arm hinge base 21 is fixed on one side of the left mold moving frame 2 opposite to the right mold moving frame 3, the upper end of the left arm 4 is hinged to the left end of a connecting rod plate 41 through a connecting rod plate left pin 411, the right end of the connecting rod plate 41 is hinged to the left mold moving frame arm hinge base 21 through a connecting rod plate right pin 412, and the middle part of the left arm 4 is hinged to the mold frame base 1 through a left arm pin 42 at a position corresponding to the arm holding cavity 11; because the articulated mode of the upper end of the aforesaid right armful arm 5 and the aforesaid one side that the former right side moves the die carrier 3 back to the aforesaid left side moves the die carrier 2 is the same with the articulated mode of the upper end of the left armful arm 4 and one side that the former left side moves the die carrier 2 back to the right side moves the die carrier 3, therefore no longer describe repeatedly, the middle part of the right armful arm 5 is articulated with the aforesaid die carrier seat 1 through right armful arm round pin axle 51 at the position that corresponds to embracing the arm chamber 11.
Still referring to fig. 1, a jig transfer slide rail 12 is fixed to the jig base 1 at positions corresponding to the front side and the rear side in the longitudinal direction of the arm embracing chamber 11, a right jig transfer slide block 31 is fixed to the bottom of the left jig transfer frame 2 at a position corresponding to the jig transfer slide rail 12, a right jig transfer slide block 31 is fixed to the bottom of the right jig transfer frame 3 at a position corresponding to the jig transfer slide rail 12, and the left jig transfer slide block 22 and the right jig transfer slide block 31 are slidably engaged with the jig transfer slide rail 12.
Referring to fig. 2, a left arm-embracing chamber 43 is formed at the lower end of the left arm-embracing 4, a right arm-embracing chamber 52 (shown in fig. 1) is formed at the lower end of the right arm-embracing 5, a left arm-embracing bearing 431 is respectively embedded on the front and rear chamber walls of the left arm-embracing chamber 43, the left arm-embracing bearing 431 is defined by a left arm-embracing bearing cap 4311 fixed to the left arm-embracing 4, a right arm-embracing bearing 521 is respectively embedded on the front and rear chamber walls of the right arm-embracing chamber 52, the right arm-embracing bearing 521 is also defined by a right arm-embracing bearing cap, the driving shaft 64 is rotatably fitted with the left arm-embracing bearing 431, the left end of the swing arm 63 is at a position corresponding to the left arm-embracing chamber 43 and is sleeved on the driving shaft 64 by a swing arm bearing 632, a left lever adjusting connector 681 is fitted at the left end of the pull rod 68, a right lever adjusting connector 682 is fitted with a right lever adjusting connector 68682 extending into the right arm-embracing chamber 52 and hinged to the right adjusting pin 21, the right adjusting connector pin 6821 is rotatably engaged with the right arm-embracing bearing 521, and the right end of the swing arm 63 is hinged to the left adjusting connector 681.
Preferably, a screw head 643 is formed at a distal end portion of the drive shaft 64, that is, an end portion of the protruding stopper 67, and a lock nut 6431 is disposed on the screw head 643.
According to the common knowledge, a left pull rod adjusting connector 681 and a right pull rod adjusting connector 682 are disposed (connected) on the pull rod 68, so as to make the swing distance of the left and right arms 4 and 5 meet the requirement of opening and closing the mold. After the adjustment of the left adjusting connector 681 of the pull rod is completed, the left locking nut 6813 locks the pull rod, and in the same way, after the adjustment of the right adjusting connector 682 of the pull rod is completed, the right locking nut 6822 locks the pull rod. As can be seen from the schematic of fig. 2: the left end of the pull rod 68 is in threaded connection with the pull rod left adjustment connector 681, and the right end is in threaded connection with the pull rod right adjustment connector 682.
Continuing to refer to fig. 2, the reduction box 62 is fixed to the rear side of the lower end of the left arm 4 through a reduction box base 622, a reduction box base fixing screw 6221 for fixing the reduction box base 622 to the rear side of the lower end of the left arm 4 is shown in the figure, a reduction box power output shaft fitting hole 641 is formed in the center of the rear end of the driving shaft 64, and the reduction box power output shaft fitting hole 641 is in transmission fit with a flat key 6211 on a reduction box power output shaft 621 of the reduction box 62, that is, is fixed to the flat key 6211.
Continuing with fig. 2, a left adjusting connector pin cavity 633 is formed at the right end of the swing arm 63, a left adjusting connector pin hole 6331 is respectively formed at the front and rear cavity walls of the left adjusting connector pin cavity 633 and at the corresponding positions, and the pull rod left adjusting connector 681 is hinged to the right end of the swing arm 63 at the position corresponding to the left adjusting connector pin hole 6331 through the left adjusting connector pin 6811.
As shown in fig. 2, a pair of stopper pin stopping legs 634 are formed on the right end surface of the swing arm 63, and a pair of stopper pins 6812 are formed on the left lever adjusting connecting head 681 at positions corresponding to the pair of stopper pin stopping legs 634, and the pair of stopper pins 6812 are engaged with the pair of stopper pin stopping legs 634.
Continuing with fig. 2, a driving shaft key 642 is formed at the front end of the driving shaft 64, a coil spring leg positioning shaft sleeve key 6611 is formed on the hole wall of the driving shaft fixing hole 661 of the coil spring leg positioning shaft sleeve 66, the retainer 67 has a retainer driving shaft fitting hole 672, a retainer key 6721 is formed on the hole wall of the retainer driving shaft fitting hole 672, and the coil spring leg positioning shaft sleeve key 6611 and the retainer key 6721 are fixed with the driving shaft key 642.
Continuing to refer to fig. 2, a set of coil spring foot adjusting caulking grooves 653 are formed on the inner wall of the coil spring box 65 at intervals, a coil spring foot positioning caulking groove 662 is formed on the outer wall of the coil spring foot positioning shaft sleeve 66, a coil spring foot is formed at one end and the other end of the coil spring 651 respectively, the coil spring foot at one end is fitted in one coil spring foot adjusting caulking groove 653 of the set of coil spring foot adjusting caulking grooves 653, and the coil spring foot at the other end is fitted in the coil spring foot positioning caulking groove 662, so that the pre-tightening force of the coil spring 651 can be changed by changing the fitting position of the coil spring foot at one end of the coil spring 651 in the set of coil spring foot adjusting caulking grooves 653.
In the present embodiment, the motor 61 is a motor having a forward and reverse rotation function.
According to the common sense of the art, in the actual usage state, a left half mold for molding the plastic product is installed on one side of the left transfer mold frame 2 facing the right transfer mold frame 3, a right half mold is installed on one side of the right transfer mold frame 3 facing the left transfer mold frame 2, and the left half mold and the right half mold correspond to each other.
When the die is required to be closed, the motor 61 works anticlockwise, the motor 61 drives the reduction gearbox 62, the reduction gearbox power output shaft 21 drives the driving shaft 64, the driving shaft 64 drives the coil spring foot positioning shaft sleeve 66 and the limiting sleeve 67, the coil spring foot positioning shaft sleeve 66 is used for tightly coiling the coil spring 651, the coil spring box 65 is still in a static state before the coil spring 651 is not tightly coiled, and the coil spring 651 drives the coil spring box 65 to rotate anticlockwise only after the coil spring 651 is tightly coiled. When the coil spring box 65 rotates counterclockwise, the guide block 631 is driven by the coil spring box shifting block 69 fixed to the coil spring box 65, the right end of the swing arm 63 moves upward by the guide block 631, and the swing arm 63 drives the left pull rod adjusting connector 681 to move correspondingly until the pull rod 68 is supported to be horizontal. In this state, the lower ends of the left and right arms 4 and 5 are repelled from each other, i.e., they are displaced in opposite directions, and the upper ends of the left and right arms 4 and 5 are swung in opposite directions, so that the left and right movable frames 2 and 3 are forced to slide in opposite directions along the movable frame slide rail 12, thereby completing the mold closing operation.
After the mold closing action is completed, the motor 61 continues to work, the driving shaft 64 drives the limiting ring 67 to continue to rotate according to the process, and when the limiting block 671 of the limiting ring 67 is blocked by the end wall of the notch 65221, namely the limiting block 671 is contacted with one end wall (also called an end face) of the notch 65221, the driving shaft 64 is indicated to rotate in place, so that the mold locking is completed.
The action process of opening the mold is opposite to that of closing the mold, but the principle is the same, for example, the motor 61 works clockwise, and thus the applicant does not need to describe any further.
In conclusion, the technical scheme provided by the invention overcomes the defects in the prior art, successfully completes the invention task and truly realizes the technical effects of the applicant in the technical effect column.
Claims (10)
1. A mould opening and closing device of a plastic product forming machine comprises a mould frame seat (1) which is provided with an arm-holding cavity (11); a left mould moving frame (2) and a right mould moving frame (3), wherein the left mould moving frame and the right mould moving frame (2, 3) are movably arranged on the mould frame seat (1) in a state of facing each other; the upper end of the left arm (4) is hinged with one side, back to the right die moving frame (3), of the left die moving frame (2), the middle part of the left arm (4) is pivoted on the die frame seat (1) at a position corresponding to the arm embracing cavity (11), and the lower end of the left arm (4) extends to the lower part of the die frame seat (1) through the arm embracing cavity (11); the upper end of the right arm (5) is hinged with one side, back to the left mould moving frame (2), of the right mould moving frame (3), the middle part of the right arm (5) is pivoted on the mould frame seat (1) at a position corresponding to the arm embracing cavity (11), and the lower end of the right arm is extended to the lower part of the mould frame seat (1) through the arm embracing cavity (11); a armful arm driving mechanism (6) used for enabling the upper ends of the left and the right armful arms (4, 5) to swing towards each other or repel each other, which is characterized in that the armful arm driving mechanism (6) comprises a motor (61), a reduction box (62), a swing arm (63), a driving shaft (64), a coil spring box (65), a coil spring foot positioning shaft sleeve (66), a limit ring (67), a pull rod (68) and a coil spring box shifting block (69), the motor (61) is in transmission fit with the reduction box (62) and is fixed with the rear side of the lower end of the left armful arm (4) by the reduction box (62) together with the motor (61), the left end of the swing arm (63) is rotationally sleeved on the driving shaft (64), a guide block (631) is fixed in the middle part of the front side of the swing arm (63), the right end of the swing arm (63) is hinged with the left end of the pull rod (68), and the right end of the pull rod (68) is hinged with the lower end of the right armful arm (5), a driving shaft (64) is rotatably supported at the lower end of the left arm (4), the rear end of the driving shaft (64) is in transmission connection with a reduction box (62), the front end of the driving shaft (64) extends out of the front side surface of the lower end of the left arm (4), a coil spring foot positioning shaft sleeve (66) is positioned in a coil spring box (65), the center of the coil spring foot positioning shaft sleeve (66) is provided with a driving shaft fixing hole (661), the driving shaft fixing hole (661) is fixed with the front end of the driving shaft (64), a coil spring (651) is arranged in the coil spring box (65) and positioned between the inner wall of the coil spring box (65) and the outer wall of the coil spring foot positioning shaft sleeve (66) in a coiling state, one end of the coil spring (651) is embedded on the inner wall of the coil spring box (65), the other end of the coil spring (651) is embedded on the coil spring foot positioning shaft sleeve (66), a coil spring box cover (652) is fixed at the front side opening part of the coil spring box (65), a coil spring foot positioning shaft sleeve matching hole (6521) is arranged at the central position of the coil spring box cover (652), the coil spring foot positioning shaft sleeve matching hole (6521) is sleeved at the front end of the coil spring foot positioning shaft sleeve (66) in an empty mode, a limiting ring seat (6522) protruding from the front side surface of the coil spring box cover (652) is formed on the front side surface of the coil spring box cover (652), a notch (65221) is formed on the limiting ring seat (6522), a limiting ring (67) is arranged in a limiting ring seat cavity (65222) of the limiting ring seat (6522) and is fixed with the front end of the driving shaft (64), a limiting block (671) extends on the limiting ring (67) and in a region corresponding to the notch (65221), and a coil spring box shifting block (69) is fixed at the rear side of the coil spring box (65) at a position corresponding to the guide block (631) and is matched with the guide block (631).
2. The mold opening and closing device of the plastic product molding machine according to claim 1, characterized in that a left mold moving frame arm-holding hinge seat (21) is fixed on one side of the left mold moving frame (2) opposite to the right mold moving frame (3), the upper end of the left arm-holding (4) is hinged to the left end of a connecting rod plate (41) through a connecting rod plate left pin shaft (411), the right end of the connecting rod plate (41) is hinged to the left mold moving frame arm-holding hinge seat (21) through a connecting rod plate right pin shaft (412), and the middle part of the left arm-holding (4) is hinged to the mold frame seat (1) through a left arm-holding pin shaft (42) at a position corresponding to the arm-holding cavity (11); the upper end of arm (5) is embraced on the right side with the mould frame (3) is moved on the right side and is backed to one side articulated mode of mould frame (2) is moved on the left side and the upper end of arm (4) is moved on the left side and mould frame (2) is moved on the back to one side articulated mode of mould frame (3) the same, the middle part of arm (5) is embraced on the right side corresponding to the position of embracing arm chamber (11) through right arm-embracing round pin axle (51) with mould frame seat (1) is articulated.
3. The mold opening and closing device of a plastic product molding machine according to claim 1, characterized in that a mold moving frame slide rail (12) is fixed to the mold frame base (1) at positions corresponding to the front side and the rear side in the length direction of the arm embracing chamber (11), a right mold moving frame slide block (31) is fixed to the bottom of the left mold moving frame (2) at a position corresponding to the mold moving frame slide rail (12), and a right mold moving frame slide block (31) is fixed to the bottom of the right mold moving frame (3) at a position corresponding to the mold moving frame slide rail (12), the left mold moving frame slide block (22) and the right mold moving frame slide block (31) being slidably fitted to the mold moving frame slide rail (12).
4. The mold opening and closing device of a plastic product molding machine according to claim 1, wherein the lower end of the left arm (4) is configured with a left arm-embracing chamber (43), the lower end of the right arm (5) is configured with a right arm-embracing chamber (52), a left arm-embracing bearing (431) is respectively embedded on the front and rear chamber walls of the left arm-embracing chamber (43), a right arm-embracing bearing (521) is respectively embedded on the front and rear chamber walls of the right arm-embracing chamber (52), the driving shaft (64) is rotationally matched with the left arm-embracing bearing (431), the left end of the swing arm (63) is sleeved on the driving shaft (64) at a position corresponding to the left arm-embracing chamber (43) through a swing arm bearing (632), the left end of the pull rod (68) is matched with a left pull rod adjusting connector (681), the right end of the pull rod is matched with a right pull rod adjusting connector (682), and the right rod adjusting connector (682) extends into the right arm-embracing chamber (52) and is hinged with a pin shaft adjusting connector (682) (6821) And the right adjusting connector pin shaft (6821) is in running fit with the right arm-embracing bearing (521), and the right end of the swing arm (63) is hinged with the pull rod left adjusting connector (681).
5. The mold opening and closing device of the plastic product molding machine according to claim 1, characterized in that the reduction gearbox (62) is fixed with the rear side of the lower end of the left arm (4) through a reduction gearbox base (622), a reduction gearbox power output shaft matching hole (641) is formed in the center of the rear end of the driving shaft (64), and the reduction gearbox power output shaft matching hole (641) is in transmission matching with a reduction gearbox power output shaft (621) of the reduction gearbox (62).
6. The mold opening and closing device of a plastic product molding machine according to claim 4, characterized in that a left adjusting connector pin cavity (633) is formed at the right end of the swing arm (63), a left adjusting connector pin hole (6331) is respectively formed at the front and rear cavity walls of the left adjusting connector pin cavity (633) and at the positions corresponding to each other, and the pull rod left adjusting connector (681) is hinged to the right end of the swing arm (63) through the left adjusting connector pin (6811) at the position corresponding to the left adjusting connector pin hole (6331).
7. The mold opening and closing apparatus of a plastic product molding machine according to claim 4 or 6, wherein a pair of stopper pin limit legs (634) are formed on a right end surface of the swing arm (63), and a pair of stopper pins (6812) are formed on the tie bar left adjustment connecting head (681) and at positions corresponding to the pair of stopper pin limit legs (634), the pair of stopper pins (6812) being engaged with the pair of stopper pin limit legs (634).
8. The mold opening and closing device of a plastic product molding machine according to claim 1, characterized in that a drive shaft key (642) is formed at the front end of the drive shaft (64), a coil spring leg positioning shaft sleeve key (6611) is formed on the hole wall of a drive shaft fixing hole (661) of the coil spring leg positioning shaft sleeve (66), the limit collar (67) is provided with a limit collar drive shaft fitting hole (672), a limit collar key (6721) is formed on the hole wall of the limit collar drive shaft fitting hole (672), and the coil spring leg positioning shaft sleeve key (6611) and the limit collar key (6721) are fixed with the drive shaft key (642).
9. The mold opening and closing device for plastic molding machine as claimed in claim 1, wherein a set of coil spring foot adjusting caulking grooves (653) are formed on the inner wall of the coil spring case (65) at intervals, a coil spring foot positioning caulking groove (662) is formed on the outer wall of the coil spring foot positioning shaft sleeve (66), one end and the other end of the coil spring (651) are respectively formed with a coil spring foot, the coil spring foot at one end is fitted with one of the coil spring foot adjusting caulking grooves (653) of the set of coil spring foot adjusting caulking grooves, and the coil spring foot at the other end is fitted with the coil spring foot positioning caulking groove (662).
10. The mold opening and closing device of a plastic product molding machine according to claim 1, characterized in that the motor (61) is a motor with a forward and reverse rotation function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710191622.0A CN106827313B (en) | 2017-03-28 | 2017-03-28 | Mould opening and closing device of plastic product forming machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710191622.0A CN106827313B (en) | 2017-03-28 | 2017-03-28 | Mould opening and closing device of plastic product forming machine |
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| Publication Number | Publication Date |
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| CN106827313A CN106827313A (en) | 2017-06-13 |
| CN106827313B true CN106827313B (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710191622.0A Active CN106827313B (en) | 2017-03-28 | 2017-03-28 | Mould opening and closing device of plastic product forming machine |
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| US3984998A (en) * | 1975-09-12 | 1976-10-12 | General Motors Corporation | Energy absorbing coupling |
| JPH02178015A (en) * | 1988-12-29 | 1990-07-11 | Nissei Plastics Ind Co | Mold clamping safety device of injection molder |
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| JP2011148191A (en) * | 2010-01-21 | 2011-08-04 | Jih Huang Machinery Industrial Co Ltd | Full-electromotive molding machine |
| CN102357948A (en) * | 2011-08-25 | 2012-02-22 | 苏州同大机械有限公司 | Elbow clasping type die opening and closing mechanism |
| CN206733418U (en) * | 2017-03-28 | 2017-12-12 | 苏州同大机械有限公司 | The folding mould device of plastic product molding machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10230024C1 (en) * | 2002-07-04 | 2003-10-16 | Demag Ergotech Gmbh | Mold closing mechanism, for an injection molding machine, has a locking nut locked on the spindle shaft against a reverse unwinding movement |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3984998A (en) * | 1975-09-12 | 1976-10-12 | General Motors Corporation | Energy absorbing coupling |
| JPH02178015A (en) * | 1988-12-29 | 1990-07-11 | Nissei Plastics Ind Co | Mold clamping safety device of injection molder |
| CN1322618A (en) * | 2000-04-28 | 2001-11-21 | 日精Asb机械株式会社 | Closing mechanism for blow-moulding machine |
| JP2005035060A (en) * | 2003-07-17 | 2005-02-10 | Tahara:Kk | Mold clamping device for blow molding machine |
| CN101767441A (en) * | 2009-01-06 | 2010-07-07 | 郭锡南 | Mold-locking mechanism |
| JP2011148191A (en) * | 2010-01-21 | 2011-08-04 | Jih Huang Machinery Industrial Co Ltd | Full-electromotive molding machine |
| CN102357948A (en) * | 2011-08-25 | 2012-02-22 | 苏州同大机械有限公司 | Elbow clasping type die opening and closing mechanism |
| CN206733418U (en) * | 2017-03-28 | 2017-12-12 | 苏州同大机械有限公司 | The folding mould device of plastic product molding machine |
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| Publication number | Publication date |
|---|---|
| CN106827313A (en) | 2017-06-13 |
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