Working method of rapid die change mechanism for injection molding machining
阅读说明:本技术 一种注塑加工用快速换模机构的工作方法 (Working method of rapid die change mechanism for injection molding machining ) 是由 孙超月 洪思宜 于 2020-07-14 设计创作,主要内容包括:本发明涉及注塑加工领域,具体涉及一种注塑加工用快速换模机构的工作方法,包括注塑机、安装在注塑机上的正模座和反模座,还包括正模、反模、夹爪移动机构、弹性插紧机构、机械夹爪、预热机构、放置架和四个脱模机构,该注塑加工用快速换模机构,通过预热机构对放置架上的模具进行预热,避免了工人对模具进行搬运,降低了工人受到危险的可能性,避免了对正反模具进行两次夹紧安装,加快模具更换的过程,且由于从反模上取下正模,降低了模具安装出现偏差的概率,将正模和反模之间紧密连接,只需要进行一次夹紧拆卸,加快模具更换的过程,且不需要工人将正模和反模组装到一起,正模和反模组装到一起,减少了模具的占地面积。(The invention relates to the field of injection molding processing, in particular to a working method of a quick die change mechanism for injection molding processing, which comprises an injection molding machine, a positive die holder and a negative die holder which are arranged on the injection molding machine, and also comprises a positive die, a negative die, a clamping jaw moving mechanism, an elastic insertion mechanism, a mechanical clamping jaw, a preheating mechanism, a placing frame and four demolding mechanisms, wherein the quick die change mechanism for injection molding processing preheats a die on the placing frame through the preheating mechanism, thereby avoiding the carrying of the die by workers, reducing the possibility of danger of the workers, avoiding the twice clamping installation of the positive die and the negative die, accelerating the process of die replacement, reducing the probability of deviation of die installation due to taking off the positive die from the negative die, tightly connecting the positive die and the negative die, only needing to carry out once clamping disassembly, accelerating the process of die replacement, and not needing to assemble the positive die and the negative die together by the workers, the positive die and the negative die are assembled together, so that the floor area of the die is reduced.)
1. A working method of a quick die change mechanism for injection molding processing is characterized by comprising the following steps:
the method comprises the following steps: preheating a mould;
the mechanism (8) work is preheated in controller control, the first electronic slip table of controller control (8 d 1) carries out horizontal migration, first electronic slip table (8 d 1) drive two hot plate (8 a) horizontal motion to suitable position, the controller is controlled second electronic slip table (8 d 2) again and is driven first electronic slip table (8 d 1) and move down corresponding position, the both sides of the mould on frame plate (9 b) are removed in two hot plate (8 a), rethread controller control hot plate (8 a) work, two hot plate (8 a) heat the mould, accomplish the preheating to the mould.
2. The method of operation of claim 1, further comprising the steps of:
step two: taking down the mold;
the controller controls the mechanical arm (10 a) to move to a corresponding position, the two clamping plates (7 e) are inserted into the two insertion shells (6 h), the controller controls the two-way cylinder (7 b) to move, the two ends of the two-way cylinder (7 b) pull the two clamping plates (7 e) and the first sliding seat (7 c) to move along the first sliding rail (7 d), so that the clamping blocks (7 h) are inserted into the through holes (6 h 1), the downward pulling of the insertion shell (6 h) is continued through the bidirectional air cylinder (7 b), so that the insertion shell (6 h) pulls the cylinder (6 c), the positioning plate (6 b) and the square insertion block (6 a) to move downwards, the positioning plate (6 b) compresses the second spring (6 d), the end part of the square insertion block (6 a) is pulled out of the second square insertion hole (9 b 1), and the die is not connected with the two frame plates (9 b).
3. The method of operation of claim 3, further comprising the steps of:
step three: clamping and moving the mold;
the placing frame (9) is controlled by the controller to drive the clamping die to be pulled out through the mechanical arm (10 a), one end of the die is abutted to the positioning barrier strip (4 a), if the mechanical arm (10 a) is far away from the counter die holder (4) horizontally, the ball screw (10 b) is controlled by the controller to move, and the ball screw (10 b) drives the sliding plate (10 h) and the second sliding seat (10 c) to move along the second sliding rail (10 d).
4. The method of operation of claim 3, further comprising the steps of:
step four: installing a mould;
the controller controls the bidirectional cylinder (7 b) to outwards push the two clamping plates (7 e), the two second springs (6 d) outwards push the two positioning plates (6 b), the positioning plates (6 b) drive the square insertion blocks (6 a) to slide along the square sliding holes (2 d), the end parts of the positioning plates (6 b) are inserted into the first square insertion holes (4 b) in the counter die holder (4), and then the die is fixed on the counter die holder (4).
5. The method of operation of claim 4, further comprising the steps of:
step five: separating a positive mold from a negative mold;
an injection molding machine (11) drives a positive mold seat (3) to be sleeved on a positive mold (1), a controller controls four demolding mechanisms (5) to work, a single-shaft cylinder (5 a) drives an inserting column (5 c) to sequentially penetrate through a guide sliding hole (3 a) and an avoiding through hole (1 a 61), the single-shaft cylinder (5 a) pushes an elastic top plate (1 a 3), the elastic top plate (1 a 3) compresses a first spring (1 a 2), the guide column (1 a 1) is inserted into a circular slot (2 a), and when the single-shaft cylinder (5 a) is completely extended out, the elastic top plate (1 a 3) moves to the lower part of the first T-shaped sliding groove (1 c), the clamping plate (1 a 5) moves to the position of the avoiding notch (2 c), the controller controls the injection molding machine (11) to drive the positive mold (1) to reset, the clamping plate (1 a 5) is pulled out from the avoiding notch (2 c), and then the separation between the reverse mold (2) and the positive mold (1) is completed.
6. The method of operation of claim 5, further comprising the steps of:
step six: taking down a positive mould and a negative mould;
an injection molding machine (11) drives a positive mold (1) to be attached to the outer wall of one side of a reverse mold (2), four inserting columns (1 b) are inserted into four circular slots (2 a), then a controller controls four single-shaft cylinders (5 a) to drive the inserting columns (5 c) to retract, the elastic top plate (1 a 3) is pushed to reset by the reset elastic force of the first spring (1 a 2), the guide plate (1 a 4) and the catch plate (1 a 5) are inserted into the second T-shaped sliding groove (2 b), the positive die (1) is fixedly connected with the reverse die (2), and the mechanical clamping jaw (7) is driven by the mechanical arm (10 a) to clamp the two inserting shells (6 h), the square insert block (6 a) is drawn out of the first square insert hole (4 b), and the positive die (1) and the negative die (2) are placed at the appointed positions on the injection molding machine (11) through the matching of the mechanical arm (10 a) and the ball screw (10 b).
Technical Field
The invention relates to the field of injection molding processing, in particular to a working method of a quick die change mechanism for injection molding processing.
Background
An injection molding machine is also known as an injection molding machine or an injection machine. The plastic product forming device is main forming equipment for manufacturing thermoplastic plastics or thermosetting plastics into plastic products with various shapes by utilizing a plastic forming mold, when the mold on an injection molding machine is replaced conventionally, the mold is firstly lifted out of the injection molding machine by a crane, and then a new mold is lifted into the injection molding machine by the crane, so that the replacement of the mold is completed, when the mold of a small injection molding machine is installed, the mold is often moved into the injection molding machine by workers, then the mold on the injection molding machine is replaced, and the carrying process is too dangerous.
Chinese patent application No.: CN 201911222753.6; the utility model discloses a retooling structure is used in injection molding machine processing, the device can utilize the standing groove on the rack to carry out the management of concentrating to the mould, thereby effectually avoid traditional mould to place in disorder the problem that leads to maintaining the difficulty, and the device can also utilize and remove the automatic mould to each injection molding machine of seat cooperation clamp arm to change, thereby can effectually replace traditional artifical retooling operation, provide better retooling efficiency and reduce the consumption to the manpower, the device can utilize first location push rod and second location push rod to realize the quick clamp to the mould, thereby can effectually reduce the loaded down with trivial details operation of retooling process, the efficiency of the retooling is improved.
This solution has the following drawbacks:
1. although this scheme can carry out the high-speed grip to the mould to realize quick retooling, this equipment need carry out twice to positive and negative mould and press from both sides tight dismantlement, and when installing the mould, also need carry out twice tight installation of clamp with positive and negative mould, and the mould replacement process is too slow.
2. And the installation precision of the die is too high, and the problem of installation deviation often appears when the positive and negative dies are respectively installed.
3. When the mold is clamped and replaced, the front mold and the back mold are often clamped to two places, the front mold and the back mold cannot be assembled together, workers are required to assemble the front mold and the back mold together, and a large amount of working time of the workers is wasted.
4. When the mould is installed, the mould of the scheme is in a cold state, and after the mould is installed, the positive and negative moulds are required to be heated, so that a large amount of working time of workers is wasted.
Disclosure of Invention
The invention aims to provide a quick die change mechanism for injection molding and a working method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a working method of a quick die change mechanism for injection molding processing is characterized by comprising the following steps:
the method comprises the following steps: preheating a mould;
the controller controls the preheating mechanism to work, the controller controls the first electric sliding table to horizontally move, the first electric sliding table drives the two heating plates to horizontally move to proper positions, the controller controls the second electric sliding table to drive the first electric sliding table to downwards move to corresponding positions, the two heating plates move to two sides of a die on the frame plate, the controller controls the heating plates to work, the two heating plates heat the die, and preheating of the die is completed;
step two: taking down the mold;
the controller controls the mechanical arm to move to a corresponding position, the two clamping plates are inserted into the two inserting shells, the controller controls the bidirectional cylinder to move, the two ends of the bidirectional cylinder pull the two clamping plates and the first sliding seat to move along the first sliding rail, so that the clamping block is inserted into the through hole, the bidirectional cylinder continues to pull the inserting shells downwards, the inserting shells pull the cylinders, the positioning plate and the square inserting blocks to move downwards, the positioning plate compresses the second spring, the end parts of the square inserting blocks are pulled out of the second square inserting holes, and the mold is not connected with the two frame plates;
step three: clamping and moving the mold;
the controller controls the mechanical arm to drive the clamped die to be pulled out of the placing frame, one end of the die is abutted against the positioning barrier strip, and if the horizontal distance between the mechanical arm and the counter die holder is too far, the controller controls the ball screw to move, so that the ball screw drives the sliding plate and the second sliding seat to move along the second sliding rail;
step four: installing a mould;
the controller controls the bidirectional cylinder to push the two clamping plates outwards, the two second springs push the two positioning plates outwards, the positioning plates drive the square insertion blocks to slide along the square sliding holes, and the end parts of the positioning plates are inserted into the first square insertion holes in the counter die holder so as to fix the die on the counter die holder;
step five: separating a positive mold from a negative mold;
the injection molding machine drives a positive mold seat to be sleeved on a positive mold, the controller controls the four demolding mechanisms to work, the single-shaft cylinder drives the inserting column to sequentially penetrate through the guide sliding hole and the avoidance through hole, the single-shaft cylinder pushes the elastic top plate, the elastic top plate compresses the first spring, the guide column is inserted into the circular slot, when the single-shaft cylinder completely extends out, the elastic top plate moves to the lower part of the first T-shaped sliding groove, the clamping plate moves to the avoidance notch, the controller controls the injection molding machine to drive the positive mold to reset, the clamping plate is drawn out from the avoidance notch, and then separation between the negative mold and the positive mold is completed;
step six: taking down a positive mould and a negative mould;
the injection molding machine drives the laminating of one side outer wall of positive mould and countermould, four insert the post and insert in four circular slots, four unipolar cylinders of rethread controller control drive and insert the post and withdraw, elastic action that resets through first spring, promote the elasticity roof and reset, baffle and cardboard are inserted in the second T shape spout, and then positive mould and countermould fixed connection, rethread arm drives mechanical clamping jaw and presss from both sides tightly two shells of inserting, make square inserted block take out in the first square jack, rethread arm and ball screw's cooperation, place appointed position on the injection molding machine with positive mould and countermould.
Compared with the prior art, the invention has the beneficial effects that:
1. this scheme preheats the mould on the rack through preheating the mechanism, has practiced thrift a large amount of operating time of workman.
2. According to the scheme, the mold clamp is moved to the mold base through the mechanical clamping jaw and the clamping jaw moving mechanism, so that a worker is prevented from carrying the mold, and the possibility that the worker is dangerous is reduced.
3. This scheme is to the back of accomplishing of mould installation, starts the injection molding machine through the workman and drives positive mould seat cover and establish in the outside of positive mould, and four elastic insertion tight mechanisms of rethread four demoulding mechanism promotion, and then make and dismantle between positive mould and the anti-mould, and realize positive mould fixed mounting on positive mould seat simultaneously, have avoided carrying out twice clamp tight installation to positive and negative mould for the process of mould change, and owing to take off positive mould from the anti-mould, reduced the probability that the deviation appears in the die holding.
4. When this scheme is dismantled positive and negative mould, drive positive mould and the laminating of anti-mould through the injection molding machine, four demoulding mechanism of rethread are withdrawed, make four elasticity insert tight mechanism and reset, and then with zonulae occludens between positive mould and the anti-mould, rethread mechanical clamping jaw and clamping jaw moving mechanism move positive mould and anti-mould clamp to the rack, only need carry out once and press from both sides tight dismantlement, accelerate the process of mould change, and do not need the workman to assemble positive mould and anti-mould together, a large amount of operating time of workman has been practiced thrift, and positive mould and anti-mould are assembled together, the area of mould has been reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a partial perspective view of the first embodiment of the present invention;
FIG. 3 is a partial perspective view of the second embodiment of the present invention;
FIG. 4 is an exploded view of a portion of the present invention;
FIG. 5 is a schematic perspective view of the counter die holder;
FIG. 6 is a third schematic view of a partial perspective structure of the present invention;
FIG. 7 is a schematic perspective view of a reverse mold;
FIG. 8 is a perspective view of the elastic insertion mechanism;
FIG. 9 is a perspective view of the insert shell;
FIG. 10 is a perspective view of a mechanical jaw;
fig. 11 is a schematic perspective view of the mold-releasing mechanism;
FIG. 12 is a perspective view of the jaw moving mechanism;
fig. 13 is a schematic perspective view of the placement frame;
fig. 14 is a schematic perspective view of the shelf plate;
FIG. 15 is a schematic perspective view of the preheating mechanism;
FIG. 16 is a perspective view of the moving assembly;
in the figure:
1. positive molding; 1a, a tight connection mechanism; 1a1, guide posts; 1a2, a first spring; 1a3, elastic top plate; 1a4, guide plate; 1a5, cardboard; 1a6, a first barrier plate; 1a61, avoiding perforations; 1a7, a second barrier plate; 1b, inserting a column; 1c, a first T-shaped chute;
2. performing reverse molding; 2a, a circular slot; 2b, a second T-shaped chute; 2c, avoiding the notch; 2d, square slide holes; 2e, strip-shaped accommodating holes;
3. a positive die holder; 3a, a slide guide hole;
4. a counter die holder; 4a, positioning barrier strips; 4b, a first square jack;
5. a demolding mechanism; 5a, a single-shaft cylinder; 5b, fixing seats; 5c, inserting a column;
6. an elastic insertion mechanism; 6a, square inserting blocks; 6b, a positioning plate; 6c, a cylinder; 6d, a second spring; 6e, C-shaped resisting plates; 6e1, receiving hole; 6h, inserting the shell; 6h1, punching; 6j, a guide plate;
7. a mechanical jaw; 7a, a fixing frame; 7b, a bidirectional cylinder; 7c, a first slide; 7d, a first slide rail; 7e, clamping plates; 7h, clamping blocks;
8. a preheating mechanism; 8a, a heating plate; 8b, mounting plates; 8c, a connecting frame; 8d, moving the assembly; 8d1, a first electric sliding table; 8d2, a second electric sliding table; 8d3, cross board; 8d4, side panels;
9. placing a rack; 9a, a frame; 9b, a frame plate; 9b1, second square jack; 9b2, bar perforations; 9c, supporting the tube;
10. a jaw moving mechanism; 10a, a mechanical arm; 10b, a ball screw; 10c, a second slide; 10d, a second slide rail; 10e, heightening plates; 10h, sliding plates;
11. and (5) an injection molding machine.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product.
Referring to fig. 1 to 16, a rapid mold changing mechanism for injection molding processing comprises an injection molding machine 11, a positive mold base 3 and a negative mold base 4 which are installed on the injection molding machine 11, and further comprises a positive mold 1, a negative mold 2, a clamping jaw moving mechanism 10, an elastic clamping mechanism 6, a mechanical clamping jaw 7, a preheating mechanism 8, a placing rack 9 and four demolding mechanisms 5, wherein the placing rack 9 is located beside the injection molding machine 11, the preheating mechanism 8 for heating the mold on the placing rack 9 is fixedly installed on the placing rack 9, the clamping jaw moving mechanism 10 is located between the placing rack 9 and the injection molding machine 11, the clamping jaw moving mechanism 10 is fixedly installed on the ground, the mechanical clamping jaw 7 is fixedly installed on one end of the clamping jaw moving mechanism 10, the elastic clamping mechanism 6 is fixedly installed on the negative mold 2, the elastic clamping mechanism 6 is detachably connected with the negative mold base 4, a positioning stop strip 4a for positioning the negative mold 2 is fixedly arranged on the negative mold base 4, the positioning barrier strip 4a is positioned on one side of the reverse die holder 4 far away from the clamping jaw moving mechanism 10, the four demolding mechanisms 5 are respectively installed at the upper end and the lower end of the forward die holder 3, the forward die 1 is detachably installed on the reverse die 2 through the four tight connection mechanisms 1a, the four tight connection mechanisms 1a are respectively positioned at the four ends of the forward die 1, and the four tight connection mechanisms 1a are respectively in transmission connection with the four demolding mechanisms 5.
Each tight connection mechanism 1a comprises a guide post 1a1, a first spring 1a2, an elastic top plate 1a3, a guide plate 1a4, a clamping plate 1a5, a first blocking plate 1a6 and a second blocking plate 1a7, one end of the guide plate 1a4 is fixedly connected with the elastic top plate 1a3, the other end of the guide plate 1a4 is fixedly connected with the clamping plate 1a5, the positive die 1 is provided with a first T-shaped sliding groove 1c for the elastic top plate 1a3 and the guide plate 1a4 to slide, the guide post 1a1 is fixedly arranged at the bottom of the elastic top plate 1a3, the groove bottom of the first T-shaped sliding groove 1c is provided with a sliding hole for the guide post 1a1 to insert, the first spring 1a2 is sleeved on the guide post 1a1, the bottom of the first spring 1a2 is abutted against the groove bottom of the first T-shaped sliding groove 1c, the top of the first spring 1a 365 is positioned at the top of the first T-shaped sliding groove 5731 c, and first barrier plate 1a6 and positive mould 1 fixed connection, offer on the first barrier plate 1a6 and supply the perforation 1a61 of dodging that demoulding mechanism 5 passed, offer on the reverse mould 2 and supply guide plate 1a4 and cardboard 1a5 gliding second T shape spout 2b, and the one end that first barrier plate 1a6 was kept away from to second T shape spout 2b has seted up dodging breach 2c, second barrier plate 1a7 is located the other end of second T shape spout 2b, and second barrier plate 1a7 and reverse mould 2 fixed connection, fixed four insert post 1b that are provided with on the outer wall of one side that positive mould 1 is close to reverse mould 2, and set up on the reverse mould 2 and supply four circular slots 2a that insert post 1b to insert. The outer contour that first T shape spout 1c and second
The elastic tight-inserting mechanism 6 comprises a C-shaped abutting plate 6e and two elastic inserting arms, the reverse die 2 is provided with a strip-shaped accommodating hole 2e for accommodating the C-shaped abutting plate 6e and the two elastic inserting arms, the C-shaped abutting plate 6e and the two elastic inserting arms are fixedly arranged on one side groove wall of the strip-shaped accommodating hole 2e, the two elastic inserting arms are positioned at two sides of the C-shaped abutting plate 6e, each elastic inserting arm comprises a second spring 6d, a guide plate 6j, a square inserting block 6a, a positioning plate 6b, a cylinder 6C and an inserting shell 6h which are sequentially distributed from top to bottom, the square inserting block 6a, the positioning plate 6b, the cylinder 6C and the inserting shell 6h are fixedly connected with each other, the outer contour of the positioning plate 6b is larger than that of the square inserting block 6a, four-end fillets of the square inserting block 6a, one end of the cylinder 6C penetrates through the guide plate 6j, the guide plate 6j is provided with, and baffle 6j fixed mounting is on anti-mould 2, and second spring 6d cover is established on cylinder 6c, and the top of second spring 6d and the bottom of locating plate 6b conflict, and the bottom of second spring 6d and the top of baffle 6j conflict, and seted up on the bar accommodation hole 2e and supply two square inserted blocks 6a to slide and pass square sliding hole 2d, and seted up on the anti-mould seat 4 and supply the first square jack 4b that square inserted block 6a inserted.
The mechanical clamping jaw 7 comprises a fixing frame 7a, a bidirectional cylinder 7b, two first sliding seats 7c, first sliding rails 7d and clamping plates 7e, one side of the fixing frame 7a is fixedly installed at one end of the clamping
Every
The clamping
The rack 9 includes frame 9a and a plurality of layers of compartments, a plurality of layers of compartments fixed mounting is in frame 9a, and a plurality of layers of compartments distribute in proper order along the direction of height of frame 9a, and every layer of compartment all includes two
The moving assembly 8d comprises a first electric sliding table 8d1, a transverse plate 8d3, two second electric sliding tables 8d2 and a side plate 8d4, the two second electric sliding tables 8d2 are fixedly installed on two sides of the frame 9a, the two side plates 8d4 are fixedly installed on the sliding seats of the two second electric sliding tables 8d2, the moving assembly 8d is fixedly installed on the two side plates 8d4, the first electric sliding table 8d1 is fixedly installed on the moving assembly 8d, and the connecting frame 8c is fixedly installed on the sliding seat of the first electric sliding table 8d 1. The workman preheats
A working method of a quick die change mechanism for injection molding processing is characterized by comprising the following steps:
the method comprises the following steps: preheating a mould;
the controller controls the
step two: taking down the mold;
the controller controls the
step three: clamping and moving the mold;
the controller controls the
step four: installing a mould;
the controller controls the bidirectional cylinder 7b to push the two clamping plates 7e outwards, the two
step five: separating a positive mold from a negative mold;
the
step six: taking down a positive mould and a negative mould;
The working principle is as follows: when an upper die needs to be preheated, a worker controls the preheating mechanism 8 to work through the controller, the controller controls the first electric sliding table 8d1 to horizontally move, so that the first electric sliding table 8d1 drives the two heating plates 8a to horizontally move to a proper position, the controller controls the second electric sliding table 8d2 to drive the first electric sliding table 8d1 to downwards move to a corresponding position, so that the two heating plates 8a move to two sides of the die on the frame plate 9b, the controller controls the heating plates 8a to work, so that the two heating plates 8a heat the die, the preheating of the die is completed, after the preheating is completed, the controller controls the mechanical arm 10a to move to a corresponding position, so that the two clamping plates 7e are inserted into the two insertion shells 6h, and the controller controls the bidirectional cylinder 7b to move, two ends of a bidirectional cylinder 7b pull two clamping plates 7e and a first sliding seat 7c to move along a first sliding rail 7d, so that a clamping block 7h is inserted into a through hole 6h1, the bidirectional cylinder 7b continuously pulls an insert shell 6h downwards, the insert shell 6h pulls a cylinder 6c, a positioning plate 6b and a square insert block 6a to move downwards, the positioning plate 6b compresses a second spring 6d, the square insert block 6a moves downwards, so that the end part of the square insert block 6a is pulled out from a second square insert hole 9b1, the mold is not connected with the two frame plates 9b, the controller controls a mechanical arm 10a to drive the clamped mold to be pulled out of a placing frame 9, one end of the mold is abutted against a positioning baffle strip 4a, if the mechanical arm 10a is horizontally far away from a counter mold seat 4, the controller controls a ball screw 10b to move, so that the ball screw 10b drives the sliding plate 10h and the second sliding seat 10c to move along the second sliding rail 10d, and further the distance between the mechanical arm 10a and the reverse mold seat 4 is shortened, after one end of the mold abuts against the positioning barrier 4a, the controller controls the bidirectional cylinder 7b to push the two clamping plates 7e outwards, so that the clamping plates 7e do not apply clamping force on the inserting shell 6h, through the restoring elastic action of the second spring 6d, the two second springs 6d push the two positioning plates 6b outwards, so that the positioning plates 6b drive the square inserting block 6a to slide along the square sliding hole 2d, and the end of the positioning plate 6b is inserted into the first square inserting hole 4b on the reverse mold seat 4, and further the mold is fixed on the reverse mold seat 4, and then the injection molding machine 11 is started by a worker, so that the injection machine 11 drives the forward mold seat 3 to be sleeved on the forward mold 1, and the controller controls the four demolding mechanisms 5 to work, the single-shaft cylinder 5a drives the insert columns 5c to sequentially penetrate through the guide sliding hole 3a and the avoidance through hole 1a61, the single-shaft cylinder 5a pushes the elastic top plate 1a3, the elastic top plate 1a3 compresses the first spring 1a2, the guide columns 1a1 are inserted into the circular slots 2a, when the single-shaft cylinder 5a completely extends out, the elastic top plate 1a3 moves to the lower part of the first T-shaped sliding groove 1c, the clamping plate 1a5 moves to the avoidance notch 2c, a worker controls the injection molding machine 11 through the controller to drive the positive mold 1 to reset, the clamping plate 1a5 is drawn out from the avoidance notch 2c, separation between the reverse mold 2 and the positive mold 1 is further completed, when the mold needs to be replaced, the injection molding machine 11 is started by the worker, the injection machine 11 drives the outer wall of one side of the positive mold 1 to be attached to the outer wall of the reverse mold 2, and the four insert columns 1b into the four circular slots 2a, drive again through four unipolar cylinders 5a of controller control and insert post 5c and withdraw, elastic action that resets through first spring 1a2, and then promote elasticity roof 1a3 and reset, make baffle 1a4 and cardboard 1a5 insert in second T shape spout 2b, and then positive mould 1 and anti-mould 2 fixed connection, rethread arm 10a drives mechanical clamping jaw 7 and presss from both sides tightly two shells 6h, make square inserted block 6a take out in the first square jack 4b, and then realize the dismantlement between anti-mould 2 and the anti-mould seat 4, rethread arm 10a and ball screw 10 b's cooperation, place positive mould 1 and anti-mould 2 in the appointed position on rack 9.
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