CN109732859B - EVA (ethylene-vinyl acetate) injection mold with automatic material breaking structure - Google Patents
EVA (ethylene-vinyl acetate) injection mold with automatic material breaking structure Download PDFInfo
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- CN109732859B CN109732859B CN201811563193.6A CN201811563193A CN109732859B CN 109732859 B CN109732859 B CN 109732859B CN 201811563193 A CN201811563193 A CN 201811563193A CN 109732859 B CN109732859 B CN 109732859B
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- 239000000463 material Substances 0.000 title claims abstract description 69
- 238000002347 injection Methods 0.000 title claims abstract description 65
- 239000007924 injection Substances 0.000 title claims abstract description 65
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 title description 15
- 239000005038 ethylene vinyl acetate Substances 0.000 title description 15
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 title description 15
- 238000007789 sealing Methods 0.000 claims description 28
- 230000000903 blocking effect Effects 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 3
- 238000005381 potential energy Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of injection molds, and particularly relates to an EVA injection mold with an automatic material breaking structure, which comprises a lower mold and an upper mold matched with the lower mold, wherein two material injection interfaces are arranged in the lower mold, two first cavities are arranged on the lower mold, first square through holes communicated with the material injection interfaces are arranged on the inner wall of the top of each first cavity, two guide rods are symmetrically and fixedly arranged on the inner wall of the bottom of each first cavity, the top ends of the two guide rods are fixedly connected with the inner wall of the top of each first cavity, and the same movable plate is slidably arranged on the two guide rods. According to the invention, the material cutting mechanism is arranged in the lower die, after EVA raw materials are molded, the injection runner and the molded material handle in the material injection interface can be cut off in the demolding process of the upper die and the lower die, the separation work of the material handle and a finished product is automatically completed, the working procedure of manually cutting the material handle is reduced, the production efficiency is improved, and the effect of the finished product is better.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to an EVA injection mold with an automatic material breaking structure.
Background
The injection mold is a tool for producing plastic products, and also a tool for endowing the plastic products with complete structures and precise dimensions, and the injection molding is a processing method used for mass production of parts with complex shapes, and specifically refers to injecting a heated and melted material into a mold cavity from high pressure, and cooling and solidifying the material to obtain a formed product.
After the product in the injection mold is molded, in the demolding process, the molded material in the runner is adhered with the product, and then a worker is required to manually cut the material from the pouring gate of the edge of the product by using scissors, so that the working efficiency is affected, the manual material cutting force is not easy to control, the molded product is easily damaged, and the integral aesthetic degree of the product is affected, so that the EVA injection mold with the automatic material cutting structure is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an EVA injection mold with an automatic material breaking structure.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the EVA injection mold with the automatic material breaking structure comprises a lower mold and an upper mold matched with the lower mold, wherein two material injection interfaces are arranged in the lower mold, two first cavities are arranged on the lower mold, first square through holes communicated with the material injection interfaces are arranged on the inner walls of the tops of the first cavities, two guide rods are symmetrically and fixedly arranged on the inner walls of the bottoms of the first cavities, the top ends of the two guide rods are fixedly connected with the inner walls of the tops of the first cavities, the two guide rods are slidably provided with the same movable plate, a blocking plate is fixedly arranged at the top of the movable plate, the top ends of the blocking plate extend into the first square through holes and are in sliding and sealing connection with the inner walls of the first square through holes, first springs are sleeved on the outer walls of the two guide rods, the bottom ends of the two first springs are fixedly connected with the inner walls of the bottoms of the first cavities, the top ends of the two first springs are fixedly connected with the movable plate, two second cavities are formed in the lower die, a second square through hole communicated with the material injection port is formed in the inner wall of the bottom of the second cavities, a cutting plate is connected to the inner wall of the second square through hole in a sliding sealing manner, the bottom of the cutting plate extends into the first square through hole and contacts with the blocking plate, two second circular grooves are formed in the top of the lower die, first circular through holes communicated with the second cavities are formed in the inner wall of the bottom of the second circular grooves, push rods are interactively arranged on the inner walls of the first circular through holes, the top ends of the push rods extend to the upper side of the lower die and are fixedly connected with limiting circular plates, the bottom ends of the push rods extend into the second cavities and are fixedly connected with first fixing plates, two first connecting rods are symmetrically and rotatably arranged at the bottom of the first fixing plates, the first circular grooves are formed in the inner walls of the two sides of the second cavity, the sliding rods are slidably mounted on the inner walls of the two first circular grooves, one ends of the second springs are fixedly mounted on the inner walls of one sides of the two first circular grooves, which are far away from each other, the two ends of the two second springs are fixedly connected with the corresponding sliding rods, the second fixing plates are fixedly connected with one ends of the two sliding rods, which are far away from the first fixing plates, the second connecting rods are rotatably mounted on the outer walls of one sides of the two second fixing plates, which are far away from each other, the same third fixing plates are rotatably mounted on one ends of the two second fixing plates, the top of the cutting plate extends into the second cavity and is fixedly connected with the bottom of the third fixing plates, two molding cavities are arranged on the lower die, the two molding cavities are communicated with the discharge ports of the corresponding injection ports, and the two injection flow passages are communicated with the feed ports of the corresponding injection ports.
Preferably, two square grooves are symmetrically formed in the inner wall of the first circular through hole, fixed round rods are fixedly mounted on the inner walls of the two square grooves, two fixed blocks are fixedly mounted on the outer wall of the push rod, the two fixed round rods penetrate through the corresponding fixed blocks and are in sliding connection with the corresponding fixed blocks, and third springs are sleeved on the outer walls of the two fixed round rods.
Preferably, the fixed blocks are provided with second circular through holes, and the fixed round rods penetrate through the second circular through holes and are in sliding connection with the inner walls of the second circular through holes.
Preferably, two third circular through holes are formed in the movable plate, the two guide rods penetrate through the corresponding third circular through holes and are in sliding connection with the inner walls of the corresponding third circular through holes, and two first limit posts are symmetrically and fixedly arranged on the inner walls of the top of the first cavity.
Preferably, two sliding grooves are symmetrically formed in the inner wall of the first circular groove, two sliding blocks are fixedly mounted on the outer wall of the sliding rod, and the two sliding blocks are in sliding connection with the corresponding sliding grooves.
Preferably, a first sealing ring is fixedly installed on the inner wall of the first square through hole, the blocking plate penetrates through the first sealing ring and is in sliding sealing connection with the first sealing ring, and the first sealing ring is made of PTFE (polytetrafluoroethylene) materials.
Preferably, a second sealing ring is fixedly arranged on the inner wall of the second square through hole, and the cutting plate penetrates through the second sealing ring and is in sliding sealing connection with the second sealing ring.
Preferably, the first connecting rod and the second connecting rod have the same specification, and two second limiting columns are symmetrically and fixedly arranged on the inner wall of the top of the second cavity, and the bottom ends of the two second limiting columns are contacted with the first fixing plate.
Compared with the prior art, the invention has the beneficial effects that: through lower mould, annotate the material interface, first square through-hole, first cavity, the guide bar, the fly leaf, the closure plate, first spring, the square through-hole of second, the cutting board, the second cavity, first circular through-hole, the push rod, spacing plectane, first fixed plate, the head rod, first circular slot, the slide bar, the second spring, the second fixed plate, the second connecting rod, the third fixed plate, the second circular slot, the square slot, fixed circular bar, the fixed block, third spring and upper mould cooperate, the in-process that lower mould and upper mould were closed, the pressure that the limit plectane received the upper mould can move downwards, thereby can drive the push rod to move far downwards, the pressure that the third spring received the fixed block can be compressed, store elastic potential energy, the in-process that first fixed plate moves far downwards can push two second fixed plates away from each other through two first connecting rods, the thrust of two second springs received corresponding slide bar can be compressed, store elastic potential energy, in-process that two second fixed plates keep away from each other, two second connecting rods can drive the third fixed plate and move upwards, thus the pressure that the head rod is cut the bottom of the material interface with the lower mould is cut off, the bottom of the mould that the corresponding lower mould is not moved, the bottom of the mould is cut with the interface with the top of the lower mould and the bottom that the lower mould is completely flush with the upper mould and the upper mould has been cut;
Through the cooperation of the lower die, the material injection interface, the second square through hole, the cutting plate, the second cavity, the first round through hole, the push rod, the limiting circular plate, the first fixing plate, the first connecting rod, the first round groove, the slide bar, the second spring, the second fixing plate, the second connecting rod, the third fixing plate, the second round groove, the square groove, the fixed round bar, the fixing block, the third spring, the injection runner and the upper die, when the upper die is opened after the product is formed, the push rod after losing the weight of the upper die moves upwards under the action of the third spring, meanwhile, the second springs in the two first round grooves push the two second fixing plates to move oppositely, the two second connecting rods push the third fixing plate to move downwards, the third fixing plate pushes the cutting plate to move downwards, when the first fixing plate moves upwards to be in contact with the second limiting column, the bottom of the cutting plate can be lowered to the initial position, and the material handle formed in the material injection interface is cut off;
According to the invention, the material cutting mechanism is arranged in the lower die, after EVA raw materials are molded, the injection runner and the molded material handle in the material injection interface can be cut off in the demolding process of the upper die and the lower die, the separation work of the material handle and a finished product is automatically completed, the working procedure of manually cutting the material handle is reduced, the production efficiency is improved, and the effect of the finished product is better.
Drawings
FIG. 1 is a front cross-sectional view of an EVA injection mold with an automatic material breaking structure according to the present invention;
FIG. 2 is an enlarged view at A of FIG. 1;
FIG. 3 is an enlarged view at B of FIG. 2;
FIG. 4 is an enlarged view at C of FIG. 2;
FIG. 5 is an enlarged view of FIG. 2 at D;
FIG. 6 is an enlarged view at E of FIG. 2;
FIG. 7 is a side cross-sectional view of an EVA injection mold with an automatic material breaking structure according to the present invention;
FIG. 8 is an enlarged view of FIG. 7 at F;
Fig. 9 is a top view of an EVA injection mold with an automatic material breaking structure according to the present invention.
In the figure: 1. a lower die; 2. a material injection interface; 3. a first square through hole; 4. a first cavity; 5. a guide rod; 6. a movable plate; 7. a closure plate; 8. a first spring; 9. a second square through hole; 10. cutting a plate; 11. a second cavity; 12. a first circular through hole; 13. a push rod; 14. a limit circular plate; 15. a first fixing plate; 16. a first connecting rod; 17. a first circular groove; 18. a slide bar; 19. a second spring; 20. a second fixing plate; 21. a second connecting rod; 22. a third fixing plate; 23. a second circular groove; 24. a square groove; 25. fixing the round rod; 26. a fixed block; 27. a third spring; 28. a molding cavity; 29. an injection flow path; 30. and (5) upper die.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
Referring to fig. 1-9, in this embodiment, an EVA injection mold with an automatic material breaking structure is provided, which comprises a lower mold 1 and an upper mold 30 adapted to the lower mold 1, two material injection ports 2 are provided in the lower mold 1, two first cavities 4 are provided on the lower mold 1, a first square through hole 3 communicated with the material injection ports 2 is provided on the top inner wall of the first cavity 4, two guide rods 5 are symmetrically and fixedly installed on the bottom inner wall of the first cavity 4, the top ends of the two guide rods 5 are fixedly connected with the top inner wall of the first cavity 4, the same movable plate 6 is slidingly installed on the two guide rods 5, a closure plate 7 is fixedly installed on the top of the movable plate 6, the top ends of the closure plate 7 extend into the first square through hole 3 and are slidingly and hermetically connected with the inner wall of the first square through hole 3, a first spring 8 is sleeved on the outer wall of the two guide rods 5, the bottom ends of the two first springs 8 are fixedly connected with the bottom inner wall of the first cavity 4, two circular grooves 11 are fixedly connected with the top ends of the second circular through hole 11 are provided on the second circular through hole 11 and the top end of the second circular through hole 11, the top end of the closure plate 11 is fixedly connected with the second circular through hole 13, the top end of the circular through hole 11 is fixedly connected with the second circular through hole 11 is provided with the second circular through hole 11 is fixedly connected with the top end wall 11, the top end of the circular through hole 11 is fixedly connected with the top end hole 11 is connected with the top circular through hole 11 is connected with the top hole 12 is provided with the top round through hole 12 is connected with the top hole 12, the bottom of push rod 13 extends to in the second cavity 11 and fixedly connected with first fixed plate 15, two head rods 16 are installed to the bottom symmetry rotation of first fixed plate 15, first circular slot 17 has all been seted up on the both sides inner wall of second cavity 11, sliding rod 18 is installed to all sliding motion on the inner wall of two first circular slots 17, the one end that all fixed mounting has second spring 19 on the one side inner wall that two first circular slots 17 kept away from each other, the one end that two second springs 19 kept close to each other all is connected with corresponding slide rod 18 fixed connection, the one end that two slide rods 18 kept close to each other all fixed connection has second fixed plate 20, the one end that two head rods 16 kept away from first fixed plate 15 all is connected with corresponding second fixed plate 20 rotation, the one end that two second fixed plates 20 kept close to each other is all rotated and is installed second connecting rod 21, the same third fixed plate 22 is installed in the rotation on the one end that two second connecting rods 21 kept away from each other, the top of cutting plate 10 extends to in the second cavity 11 and is connected with the bottom fixed connection of third fixed plate 22, two injection mold opening 2 are formed into two injection runner openings 29 that are connected with each other, two corresponding injection mold opening 2 are connected with each other, two injection runner openings 29 are set up.
In this embodiment, two square grooves 24 are symmetrically formed on the inner wall of the first circular through hole 12, two fixed round rods 25 are fixedly mounted on the inner wall of the two square grooves 24, two fixed blocks 26 are fixedly mounted on the outer wall of the push rod 13, the two fixed round rods 25 penetrate through the corresponding fixed blocks 26 and are in sliding connection with the corresponding fixed blocks 26, a third spring 27 is sleeved on the outer wall of the two fixed round rods 25, a second circular through hole is formed on the fixed blocks 26, the fixed round rods 25 penetrate through the second circular through hole and are in sliding connection with the inner wall of the second circular through hole, two third circular through holes are formed on the movable plate 6, two guide rods 5 penetrate through the corresponding third circular through holes and are in sliding connection with the inner wall of the corresponding third circular through hole, two first limit posts are symmetrically mounted on the top inner wall of the first cavity 4, two sliding blocks are fixedly mounted on the outer wall of the first circular through hole 17 and are in sliding connection with the corresponding sliding grooves, the first sealing ring 15 are fixedly connected with the inner wall of the first square through hole, the first sealing ring 11 is in sliding connection with the second sealing ring 15, and the sealing ring is fixedly connected with the sealing ring is arranged on the top of the sealing ring is in the same specification as the sealing ring;
in the embodiment, through the cooperation of the lower die 1, the material injection interface 2, the first square through hole 3, the first cavity 4, the guide rod 5, the movable plate 6, the closure plate 7, the first spring 8, the second square through hole 9, the cutting plate 10, the second cavity 11, the first circular through hole 12, the push rod 13, the limit circular plate 14, the first fixed plate 15, the first connecting rod 16, the first circular groove 17, the slide bar 18, the second spring 19, the second fixed plate 20, the second connecting rod 21, the third fixed plate 22, the second circular groove 23, the square groove 24, the fixed circular rod 25, the fixed block 26, the third spring 27 and the upper die 30, in the process of closing the lower die 1 and the upper die 30, the limit circular plate 14 is subjected to the pressure of the upper die 30, so as to drive the push rod 13 to move downwards and far away, the third spring 27 is subjected to the pressure of the fixed block 26, in the process of moving downwards, the two second fixed plates 20 are pushed by the two first connecting rods 16 to move downwards and away from each other through the two corresponding second fixed plates 20, the two elastic plates 19 are pushed by the two first connecting rods 20, the two corresponding springs are pushed by the two elastic plates 18 to move upwards, the upper die 10 are pushed by the two elastic plates, the upper die plates are pushed by the corresponding second connecting plates 2 are pushed by the two elastic plates, the upper connecting plates 2 are pushed by the corresponding springs, the upper die 10 are pushed by the upper die 10 and the upper die 10 is completely moves upwards, the upper die 2 is not parallel to the upper die 2 is pushed by the upper die 2, and the upper die 2 is completely is pushed by the upper die 2 is pushed by the upper die material is completely and far is pressed by the upper die material is far; through the matching of the lower die 1, the material injection port 2, the second square through hole 9, the cutting plate 10, the second cavity 11, the first round through hole 12, the push rod 13, the limiting circular plate 14, the first fixed plate 15, the first connecting rod 16, the first round groove 17, the slide rod 18, the second spring 19, the second fixed plate 20, the second connecting rod 21, the third fixed plate 22, the second round groove 23, the square groove 24, the fixed circular rod 25, the fixed block 26, the third spring 27, the injection runner 29 and the upper die 30, when the upper die 30 is opened after the product is molded, the push rod 13 after losing the gravity of the upper die 30 moves upwards under the action of the third spring 27, meanwhile, the second springs 19 in the two first round grooves 17 push the two second fixed plates 20, the two second connecting rods 21 push the third fixed plates 22 to move downwards and the third fixed plates 22 to move downwards, the third fixed plates 22 push the cutting plate 10 to move downwards and far downwards, and when the first fixed plates 15 move upwards to be contacted with the second limiting columns, when the first fixed plates 15 move upwards and the bottom of the cutting plate 10 can be cut into the initial material injection port 2 after the product is molded; according to the invention, the material cutting mechanism is arranged in the lower die 1, after EVA raw materials are molded, the injection runner 29 and the molded material handle in the material injection interface 2 can be cut off in the demolding process of the upper die 30 and the lower die 1, the separation work of the material handle and a finished product is automatically completed, the working procedure of manually cutting the material handle is reduced, the production efficiency is improved, and the effect of the finished product is better.
In this embodiment, the initial position of the bottom of the cutting plate 10 is located in the first square through hole 3 and is in contact with the blocking plate 7, the material injection port 2 is separated by the cutting plate 10, the limiting circular plate 14 is pressed by the upper die 30 to move downwards in the process of closing the lower die 1 and the upper die 30, the limiting circular plate 14 drives the push rod 13 to move downwards and far, the third spring 27 is pressed by the fixing block 26 in the process of moving downwards the push rod 13 to store elastic potential energy, the push rod 13 can drive the first fixing plate 15 to move downwards and far, the first fixing plate 15 can rotate the two first connecting rods 16 in the process of moving downwards and push the two second fixing plates 20 to move away from each other through the two first connecting rods 16, the two second fixing plates 20 can push the corresponding slide rods 18 to move away from each other, the two second springs 19 are pressed by the thrust of the corresponding slide rods 18 to store elastic potential energy, in the process that the two second fixing plates 20 are far away from each other, the included angle between the two second connecting rods 21 is gradually increased, the third fixing plate 22 is driven to move upwards, after the third fixing plate 22 can pull the cutting plate 10 to move upwards and the blocking plate 7 does not have the pressure of the cutting plate 10, under the action of the first springs 8, the movable plate 6 can slide upwards for a small distance, after the movable plate 6 is contacted with the two first limiting columns, the top of the blocking plate 7 can be flush with the bottom inner wall of the material injection port 2, after the upper die 30 and the lower die 1 are completely combined, the limiting circular plate 14 can be completely lowered into the second circular groove 23, the top of the limiting circular plate 14 is flush with the top of the lower die 1, at the moment, the bottom of the cutting plate 10 is flush with the top inner wall of the material injection port 2, at the moment, the material injection port 2 is not blocked by the cutting plate 10, then EVA feed liquid is injected through the injection runner 29, feed liquid can be injected into the die cavity between the upper die 30 and the lower die 1 through the injection runner 29 and the material injection interface 2 in sequence, when the upper die 30 is opened after a product is formed, the push rod 13 after losing the gravity of the upper die 30 can move upwards under the action of the third springs 27, meanwhile, the second springs 19 in the two first circular grooves 17 can push the two second fixing plates 20 to move oppositely, the two second connecting rods 21 can push the third fixing plates 22 to move downwards and far, the third fixing plates 22 can push the cutting plates 10 to move downwards and far, when the first fixing plates 15 move upwards to be in contact with the second limiting columns, the bottom of the cutting plates 10 can be lowered to the initial position, and the material formed in the material injection interface 2 can be cut off.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. The EVA injection mold with the automatic material breaking structure comprises a lower mold (1) and an upper mold (30) matched with the lower mold (1), and is characterized in that two material injection interfaces (2) are arranged in the lower mold (1), two first cavities (4) are arranged on the lower mold (1), first square through holes (3) communicated with the material injection interfaces (2) are arranged on the inner wall of the top of the first cavities (4), two guide rods (5) are symmetrically and fixedly arranged on the inner wall of the bottom of the first cavities (4), the top ends of the two guide rods (5) are fixedly connected with the inner wall of the top of the first cavities (4), one movable plate (6) is slidably arranged on the two guide rods (5), the top of fly leaf (6) fixed mounting has closure plate (7), the top of closure plate (7) extends to in first square through-hole (3) and with the inner wall sliding seal connection of first square through-hole (3), all overlap on the outer wall of two guide bars (5) and be equipped with first spring (8), the bottom of two first springs (8) all with the bottom inner wall fixed connection of first cavity (4), the top of two first springs (8) all with fly leaf (6) fixed connection, two second cavities (11) have been seted up in lower mould (1), set up second square through-hole (9) that are linked together with annotate material interface (2) on the bottom inner wall of second cavity (11), the inner wall of the second square through hole (9) is connected with a cutting plate (10) in a sliding sealing manner, the bottom of the cutting plate (10) extends into the first square through hole (3) and is in contact with the blocking plate (7), two second circular grooves (23) are formed in the top of the lower die (1), first circular through holes (12) communicated with the second cavity (11) are formed in the inner wall of the bottom of the second circular grooves (23), push rods (13) are interactively mounted on the inner wall of the first circular through holes (12), the top ends of the push rods (13) extend to the upper side of the lower die and are fixedly connected with limiting circular plates (14), the bottom ends of the push rods (13) extend into the second cavity (11) and are fixedly connected with first fixing plates (15), two first connecting rods (16) are symmetrically and rotatably arranged at the bottom of the first fixing plate (15), first circular grooves (17) are respectively formed in the inner walls of two sides of the second cavity (11), sliding rods (18) are respectively and slidably arranged on the inner walls of the two first circular grooves (17), one ends of second springs (19) are respectively and fixedly arranged on the inner walls of one sides, far away from each other, of the two first circular grooves (17), one ends, close to each other, of the two second springs (19) are respectively and fixedly connected with the corresponding sliding rods (18), one ends, close to each other, of the two sliding rods (18) are respectively and fixedly connected with the second fixing plate (20), one ends, far away from the first fixing plates (15), of the two first connecting rods (16) are respectively and rotatably connected with the corresponding second fixing plates (20), the outer walls of one sides of the two second fixing plates (20) close to each other are respectively provided with a second connecting rod (21) in a rotating mode, one ends of the two second connecting rods (21) close to each other are respectively provided with a third fixing plate (22) in a rotating mode, the top of the cutting plate (10) extends into the second cavity (11) and is fixedly connected with the bottom of the third fixing plate (22), two forming cavities (28) are arranged on the lower die (1), the two forming cavities (28) are respectively communicated with a discharge hole of a corresponding material injection interface (2), the lower die (1) is provided with two injection runners (29), and the two injection runners (29) are respectively communicated with a feed inlet of the corresponding material injection interface (2); the EVA injection mold with the automatic material cutting structure is characterized in that two square grooves (24) are symmetrically formed in the inner wall of a first circular through hole (12), fixed round rods (25) are fixedly arranged on the inner walls of the two square grooves (24), two fixed blocks (26) are fixedly arranged on the outer wall of a push rod (13), and the two fixed round rods (25) penetrate through the corresponding fixed blocks (26) and are in sliding connection with the corresponding fixed blocks (26), and third springs (27) are sleeved on the outer walls of the two fixed round rods (25); the specification of the first connecting rod (16) is the same as that of the second connecting rod (21), two second limiting columns are symmetrically and fixedly arranged on the inner wall of the top of the second cavity (11), and the bottoms of the two second limiting columns are contacted with the first fixing plate (15).
2. The EVA injection mold with the automatic material breaking structure according to claim 1, wherein the fixing blocks (26) are provided with second circular through holes, and the fixing round rods (25) penetrate through the second circular through holes and are slidably connected with the inner walls of the second circular through holes.
3. The EVA injection mold with the automatic material breaking structure according to claim 1, wherein two third circular through holes are formed in the movable plate (6), two guide rods (5) penetrate through the corresponding third circular through holes and are slidably connected with the inner walls of the corresponding third circular through holes, and two first limit posts are symmetrically and fixedly installed on the top inner wall of the first cavity (4).
4. The EVA injection mold with the automatic material breaking structure according to claim 1, wherein two sliding grooves are symmetrically formed on the inner wall of the first circular groove (17), two sliding blocks are fixedly mounted on the outer wall of the sliding rod (18), and the two sliding blocks are both in sliding connection with the corresponding sliding grooves.
5. The EVA injection mold with the automatic material breaking structure according to claim 1, wherein a first sealing ring is fixedly installed on the inner wall of the first square through hole (3), the closure plate (7) penetrates through the first sealing ring and is in sliding sealing connection with the first sealing ring, and the first sealing ring is made of PTFE.
6. The EVA injection mold with the automatic material breaking structure according to claim 1, wherein a second sealing ring is fixedly installed on the inner wall of the second square through hole (9), and the cutting plate (10) penetrates through the second sealing ring and is in sliding sealing connection with the second sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811563193.6A CN109732859B (en) | 2018-12-20 | 2018-12-20 | EVA (ethylene-vinyl acetate) injection mold with automatic material breaking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811563193.6A CN109732859B (en) | 2018-12-20 | 2018-12-20 | EVA (ethylene-vinyl acetate) injection mold with automatic material breaking structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109732859A CN109732859A (en) | 2019-05-10 |
| CN109732859B true CN109732859B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811563193.6A Active CN109732859B (en) | 2018-12-20 | 2018-12-20 | EVA (ethylene-vinyl acetate) injection mold with automatic material breaking structure |
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| CN111716654B (en) * | 2020-07-03 | 2022-03-11 | 扬昕科技(苏州)有限公司 | Mold apparatus |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN209504799U (en) * | 2018-12-20 | 2019-10-18 | 福建泉州市嘉隆模具有限公司 | A kind of EVA jetting mold with automatic cutting structure |
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| CN105313282A (en) * | 2014-07-29 | 2016-02-10 | 青岛海尔模具有限公司 | Automatic side gate shearing mechanism for laminated injection mold |
| CN104210069A (en) * | 2014-08-29 | 2014-12-17 | 苏州正豪塑胶电子有限公司 | Directly-cutting injection mold |
| CN206765247U (en) * | 2017-03-20 | 2017-12-19 | 惠州市鑫瑞宝源塑胶模具有限公司 | The mould structure at the mouth of a river is automatically cut off in a kind of mould |
| CN206703430U (en) * | 2017-05-22 | 2017-12-05 | 泉州协力模具有限公司 | A kind of EVA jetting molds with automatic cutting structure |
| CN107322890A (en) * | 2017-07-28 | 2017-11-07 | 黄石市三木塑料模具有限公司 | A kind of plastic mould with cutting function |
| CN209504799U (en) * | 2018-12-20 | 2019-10-18 | 福建泉州市嘉隆模具有限公司 | A kind of EVA jetting mold with automatic cutting structure |
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| CN109732859A (en) | 2019-05-10 |
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