Injection mold for producing plastic products with side clips

By designing a system where the static and dynamic molds work in tandem, and utilizing mold locking clips, push-pull components, and ejector pin components, the problems of easy jamming during core pulling and oil leakage from the hydraulic cylinder seal ring in the production of plastic products with side grooves in injection molds have been solved, thereby improving production efficiency and quality and reducing costs.

CN116872453BActive Publication Date: 2026-02-06浙江天能精工科技有限公司
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Patent Information

Application Number
CN202310613027.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-05-29
Publication Date
2026-02-06
Estimated Expiration
2043-05-29

AI Technical Summary

Technical Problem

Existing injection molds have problems such as easy jamming during core pulling, insufficient clamping force of the hydraulic cylinder, and easy oil leakage at the hydraulic cylinder seal ring when producing plastic products with side grooves.

Method used

An injection mold comprising a static mold and a moving mold was designed. Molten material is transported through the main runner and branch runners. By utilizing the synergistic effect of the mold locking buckle, push-pull assembly and ejector pin assembly, the plastic product can be successfully demolded, avoiding the disadvantages of direct core pulling by the built-in thin hydraulic cylinder.

Benefits of technology

It improved the production efficiency and quality of plastic products, reduced production costs and processing difficulty, and solved the problems of easy jamming during core pulling and oil leakage from the cylinder seal ring.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a kind of injection mould for producing plastic product with side face clamping groove, it is related to injection molding equipment technical field.The present application includes static mould and the dynamic mould being arranged above static mould;Static mould includes B plate, gasket and bottom plate arranged horizontally from top to bottom;The lower die core is fixedly embedded in the upper surface of B plate;Gasket and bottom plate are connected by a pair of mould feet;Between two mould feet, ejector pin assembly is vertically installed;Dynamic mould includes top plate, flow divider and A plate arranged horizontally from top to bottom;A plate, B plate and gasket are connected by locking buckle;The upper surface of A plate is fixedly embedded with upper die core;Through hole is formed in the opposite two side walls of upper die core;Core-pulling body is slidably inserted into through hole;Core-pulling body and gasket are connected by push-pull assembly.The present application not only has reasonable structure design, is convenient to use, but also effectively improves the production efficiency and production quality of plastic product.
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Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of injection molding equipment, in particular to an injection mold for producing plastic products with side clamping grooves. BACKGROUND

[0002] Injection molding is a common method for producing injection molded products, specifically referring to injecting high-pressure molten material into a mold cavity, and obtaining a shaped product after cooling and solidification. When producing plastic products with side clamping groove structures using injection molds, the injection mold structure is usually built-in thin oil cylinders for direct core pulling, but this structure has problems such as core pulling being easily stuck, lack of mold locking force forming burrs, and oil leakage at the oil cylinder sealing ring. Therefore, it is urgent to research an injection mold for producing plastic products with side clamping grooves to solve the above problems. SUMMARY

[0003] The present application provides an injection mold for producing plastic products with side clamping grooves, which aims to solve the technical problems raised in the background.

[0004] To solve the above technical problems, the present application is realized by the following technical scheme:

[0005] The present application is an injection mold for producing plastic products with side clamping grooves, which includes a static mold and a movable mold arranged above the static mold. The static mold includes a B plate, a spacer plate, and a bottom plate arranged horizontally from top to bottom. A pair of lower mold cores are embedded in the upper surface of the B plate. The spacer plate and the bottom plate are connected by a pair of mold legs. A needle assembly is vertically installed between the two mold legs. The upper part of the needle assembly can sequentially penetrate the spacer plate, the B plate, and the lower mold core. The movable mold includes a top plate, a flow divider plate, and an A plate arranged horizontally from top to bottom. The top plate, the flow divider plate, and the A plate are connected by screws. The A plate, the B plate, and the spacer plate are connected by a mold locking buckle. A pair of upper mold cores corresponding to the lower mold cores are embedded in the lower surface of the A plate. A blocking strip is vertically fixed inside the upper mold core. Through holes are formed in the opposite two side walls of the upper mold core. A core pulling body slides and penetrates through the through holes. One end of the core pulling body can abut against one side of the blocking strip. The other end of the core pulling body is connected to the spacer plate by a push-pull assembly.

[0006] As a preferred technical scheme of the present application, the needle assembly includes a needle bottom plate arranged horizontally between the two mold legs and a needle face plate fixed horizontally on the upper surface of the needle bottom plate. The needle bottom plate and the needle face plate can move up and down between the two mold legs. A plurality of needles are vertically fixed on the upper surface of the needle face plate. The upper ends of the needles sequentially penetrate the spacer plate, the B plate, and the lower mold core. The needles are slidingly connected with the spacer plate, the B plate, and the lower mold core.

[0007] As a preferred technical scheme of the present application, the upper surface of the top plate is fixed with vertically arranged main flow channels; the lower end of the main flow channels is horizontally connected with a flow distribution block; the flow distribution block is fixedly embedded on the upper surface of a flow distribution plate; the lower surface of the flow distribution block is vertically fixed with a pair of flow distribution channels corresponding to the two upper mold cores; the lower end of the two flow distribution channels penetrates the flow distribution plate and the A plate in sequence and is connected with the two upper mold cores respectively.

[0008] As a preferred technical scheme of the present application, the lock buckle comprises a support block fixed on the side surface of the B plate, a first pull rod with the upper end fixed on the side surface of the A plate, and a second pull rod with the lower end fixed on the side surface of the pad plate; the upper surface of the support block is provided with a first guide hole corresponding to the first pull rod and a second guide hole corresponding to the second pull rod side by side; a first limiting convex is arranged on the inner wall of the first guide hole; the first pull rod is slidingly inserted into the first guide hole; a first clamping block corresponding to the first limiting convex is fixed on one side surface of the lower end of the first pull rod; the upper surface of the first clamping block is in abutment with the lower surface of the first limiting convex; a second limiting convex is arranged on the inner wall of the second guide hole; the second pull rod is slidingly inserted into the second guide hole; a second clamping block corresponding to the second limiting convex is fixed on one side surface of the upper end of the second pull rod; the lower surface of the second clamping block can be in abutment with the upper surface of the second limiting convex.

[0009] As a preferred technical scheme of the present application, one opposite side edge of the A plate is provided with a pair of receiving grooves for mounting the push-pull assembly; the two pairs of receiving grooves are arranged on the lower surface of the A plate; the push-pull assembly comprises a shovel base vertically arranged in the receiving groove and a pair of symmetrical positioning blocks fixed in the receiving groove; the lower end of the shovel base slidingly penetrates the B plate and is fixed on the upper surface of the pad plate; the upper end of the shovel base is obliquely fixed with a guide block; the two positioning blocks are slidingly provided with a bearing block; the sliding direction of the bearing block is parallel to the sliding direction of the core body; the other end of the core body is connected to the bearing block; the side surface of the bearing block close to the shovel base is obliquely provided with a sliding groove corresponding to the guide block; the guide block is slidingly fitted in the sliding groove.

[0010] As a preferred technical scheme of the present application, the upper surface of the bearing block is provided with a limiting piece; the limiting piece is fixed on the top wall of the receiving groove; the lower surface of the limiting piece is slidingly attached to the upper surface of the bearing block.

[0011] As a preferred technical scheme of the present application, the side surface of the bearing block away from the shovel base is vertically provided with a pair of grooves corresponding to the core body; the two grooves are connected with mounting blocks respectively; one side surface of the two mounting blocks is connected with the other end of the two core bodies respectively.

[0012] As a preferred technical scheme of the present application, a pair of blind holes are vertically formed on the side of the bearing block away from the base of the shovel; a reset spring is arranged in each of the blind holes; one end of the reset spring is connected to the inner wall of the blind hole; and the other end of the reset spring extends out of the blind hole.

[0013] The present application has the following advantages:

[0014] After the movable die and the static die are combined, the molten material is transported into the mold cavity formed by the combination of the lower mold core and the upper mold core through the main runner, the split block and the split runner, then the plastic product in the mold cavity is cooled and formed, the movable die is driven upward, the lock buckle drives the B plate to move upward synchronously (at this time, the lower mold core and the upper mold core are still combined), so that the B plate is separated from the pad, then the push-pull assembly drives the core pulling body to move out of the through hole, so that the core pulling body is separated from the clamping groove of the plastic product, then the movable die continues to move upward, the lock buckle drives the B plate to separate from the A plate (at this time, the lower mold core and the upper mold core are separated), then the ejector pin assembly is driven upward by the ejector pin of the injection molding machine, so that the plastic product is moved out of the lower mold core, after the mechanical hand takes away the plastic product, the injection molding of the plastic product is completed, which not only has a reasonable structure design and is convenient to use, but also effectively improves the production efficiency and production quality of the plastic product, and reduces the production cost and processing difficulty, and solves the shortcomings of the direct core pulling of the built-in thin oil cylinder in the prior art.

[0015] Of course, implementing any product of the present application does not necessarily require achieving all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0017] Figure 1 It is a structural schematic view of an injection mold for producing a plastic product with a side clamping groove.

[0018] Figure 2 It is a structural front view of Figure 1 .

[0019] Figure 3 It is a structural side view of Figure 1 .

[0020] Figure 4 It is a structural sectional view of Figure 2 in the direction of A-A.

[0021] Figure 5 Fig. 1 is a perspective view of the present application. Figure 3 Fig. 2 is a sectional view of the present application in the direction of B-B.

[0022] Figure 6 Fig. 3 is a schematic view of the relative positions between the top plate, the flow distributor, the A plate and the upper mold core of the present application.

[0023] Figure 7 Fig. 4 is a schematic view of the relative positions between the static mold and the ejector assembly of the present application.

[0024] Figure 8 Fig. 5 is a schematic view of the relative positions between the backing plate, the B plate and the lower mold core of the present application.

[0025] Figure 9 Fig. 6 is a schematic view of the structure of the mold locking buckle of the present application.

[0026] Figure 10 Fig. 7 is a front view of the structure of the present application. Figure 9

[0027] Figure 11 Fig. 8 is a schematic view of the structure of the support block of the present application.

[0028] Figure 12 Fig. 9 is a schematic view of the structure of the push-pull assembly of the present application.

[0029] Figure 13 Fig. 10 is a schematic view of the relative positions between the push-pull assembly and the plastic product of the present application.

[0030] Figure 14 Fig. 11 is a schematic view of the structure of the push-pull assembly of the present application.

[0031] Figure 15 Fig. 12 is a front view of the structure of the present application. Figure 14

[0032] Figure 16 Fig. 13 is a schematic view of the relative positions between the bearing block and the core-pulling body of the present application.

[0033] Figure 17 Fig. 14 is a schematic view of the structure of the bearing block of the present application.

[0034] In the drawings, the components represented by each reference numeral are listed as follows:

[0035] ​​A-plastic product, 1-moving mold, 2-static mold, 3-ejector assembly, 4-clamping buckle, 5-push-pull assembly, 101-top plate, 102-distributor plate, 103-A plate, 104-upper mold core, 105-stop bar, 106-through hole, 107-core-pulling body, 108-main runner, 109-distributor block, 110-distributor channel, 111-receiving groove, 201-bottom plate, 202-pad plate, 203-B plate, 204-mold foot, 205-lower mold core, 301-ejector bottom plate, 302-ejector face plate, 303-ejector pin, 401-supporting block, 402-first pull rod, 403-second pull rod, 404-first guide hole, 405-second guide hole, 406-first limiting convex, 407-second limiting convex, 408-first clamping block, 409-second clamping block, 501-scoop base, 502-positioning block, 503-guide block, 504-bearing block, 505-slotted guide, 506-mounting block, 507-return spring, 508-limiting sheet, 509-groove, 510-blind hole. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0037] Specific implementation I:

[0038] Please refer to Figures 1-8 and Figure 12As shown, the present application is a kind of injection mold for producing plastic product with side slot, including static die 2 and setting dynamic die 1 above static die 2;Static die 2 includes B plate 203, gasket plate 202 and bottom plate 201 arranged horizontally from top to bottom;The upper surface of B plate 203 is fixedly embedded with a pair of conventional lower mold core 205 in the field;Gasket plate 202 and bottom plate 201 are connected by a pair of mold leg 204;Gasket plate 202, bottom plate 201 and mold leg 204 are connected by bolt;The thimble assembly 3 is vertically installed between the two mold legs 204;The upper part of thimble assembly 3 can penetrate gasket plate 202, B plate 203 and lower mold core 205 in turn;Dynamic die 1 includes top plate 101, shunt plate 102 and A plate 103 arranged horizontally from top to bottom;Top plate 101, shunt plate 102 and A plate 103 are connected by screw;A plate 103, B plate 203 and gasket plate 202 are connected by locking buckle 4;The lower surface of A plate 103 is fixedly embedded with a pair of conventional upper mold core 104 in the field;Lower mold core 205 and upper mold core 104 are corresponding in position;Lower mold core 205 and upper mold core 104 form mold cavity when combined;The upper surface of top plate 101 is fixedly inserted with vertically arranged main runner 108;The lower end of main runner 108 is horizontally connected with shunt block 109;Shunt block 109 is fixedly embedded on the upper surface of shunt plate 102;The lower surface of shunt block 109 is vertically fixed with a pair of shunt channel 110 corresponding to two upper mold core 104;The lower end of two shunt channel 110 penetrates shunt plate 102 and A plate 103 in turn and is connected with two upper mold core 104 respectively;The inside of upper mold core 104 is vertically fixed with baffle 105;The opposite two side walls of upper mold core 104 are both provided with through hole 106;Through hole 106 is slidably inserted with core pulling body 107;One end of core pulling body 107 can abut against one side of baffle 105;The other end of core pulling body 107 is connected with gasket plate 202 through push-pull assembly 5.In use, after the movable mold 1 and the fixed mold 2 are combined, the molten material is delivered into the mold cavity formed by the combination of the lower mold core 205 and the upper mold core 104 through the main runner 108, the distribution block 109 and the distribution runner 110, then the plastic product A in the mold cavity is cooled and formed, the movable mold 1 is driven to move upwards, the locking buckle 4 drives the B plate 203 to move upwards synchronously with the movable mold 1 (at this time, the lower mold core 205 and the upper mold core 104 are still in the combined state), so that the B plate 203 is separated from the pad plate 202, then the push-pull assembly 5 drives the core pulling body 107 to move out of the through hole 106, so that the core pulling body 107 is separated from the clamping slot of the plastic product A, then the movable mold 1 continues to move upwards, the locking buckle 4 drives the B plate 203 to separate from the A plate 103 (at this time, the lower mold core 205 and the upper mold core 104 are separated), then the ejector pin assembly 3 is driven to move upwards by the ejector pin of the injection molding machine, so that the plastic product A is moved out of the lower mold core 205, after the plastic product A is taken away by the mechanical hand, the injection molding of the plastic product A is completed, which not only has a reasonable structure design and is convenient to use, but also effectively improves the production efficiency and production quality of the plastic product.

[0039] As shown in Figure 7 , the ejector pin assembly 3 comprises an ejector pin bottom plate 301 horizontally arranged between the two mold feet 204 and an ejector pin face plate 302 screw-connected to the upper surface of the ejector pin bottom plate 301; the ejector pin bottom plate 301 and the ejector pin face plate 302 can move up and down between the two mold feet 204; the upper surface of the ejector pin face plate 302 is vertically fixed with a plurality of ejector pins 303; the upper ends of the ejector pins 303 sequentially penetrate the pad plate 202, the B plate 203 and the lower mold core 205; the ejector pins 303 are in sliding fit with the pad plate 202, the B plate 203 and the lower mold core 205. In use, the ejector pin bottom plate 301 is driven to move upwards by the ejector pin of the injection molding machine, the ejector pin face plate 302 drives the ejector pins 303 to move upwards, the ejector pins 303 slide upwards in the pad plate 202 and the B plate 203, so that the plastic product A in the lower mold core 205 is ejected. Specific embodiment two:

[0041] On the basis of the specific embodiment one, as Figures 1-3 and Figures 9-11As shown, the mold locking buckle 4 comprises a support block 401 screw-connected to the side surface of the B plate 203, a first pull rod 402 screw-connected to the side surface of the A plate 103 at the upper end, and a second pull rod 403 screw-connected to the side surface of the cushion plate 202 at the lower end; the upper surface of the support block 401 is provided with a first guide hole 404 corresponding to the first pull rod 402 and a second guide hole 405 corresponding to the second pull rod 403 side by side; a first limiting protrusion 406 is integrally formed on an inner wall of the first guide hole 404; the first pull rod 402 is slidingly inserted into the first guide hole 404; a first clamping block 408 corresponding to the first limiting protrusion 406 is integrally formed on one side surface of the lower end of the first pull rod 402; the upper surface of the first clamping block 408 is in abutment with the lower surface of the first limiting protrusion 406; a second limiting protrusion 407 is integrally formed on an inner wall of the second guide hole 405; the second pull rod 403 is slidingly inserted into the second guide hole 405; a second clamping block 409 corresponding to the second limiting protrusion 407 is integrally formed on one side surface of the upper end of the second pull rod 403; the lower surface of the second clamping block 409 is in abutment with the upper surface of the second limiting protrusion 407. In use, when the movable mold 1 and the stationary mold 2 are combined, the upper surface of the first clamping block 408 is in abutment with the lower surface of the first limiting protrusion 406; during the process of driving the movable mold 1 to move upward, the first pull rod 402 drives the B plate 203 to move upward through the support block 401, so as to separate the B plate 203 from the cushion plate 202; when the lower surface of the second clamping block 409 is in abutment with the upper surface of the second limiting protrusion 407, the B plate 203 is separated from the A plate 103 as the movable mold 1 continues to move upward. Specific embodiment three:

[0043] On the basis of the specific embodiment two, as Figure 6 , Figure 8 and Figures 12-17As shown, the opposite two side edges of the A plate 103 are each provided with a pair of accommodating grooves 111 for mounting the push-pull assembly 5; the two pairs of accommodating grooves 111 are arranged on the lower surface of the A plate 103; the push-pull assembly 5 comprises a shovel base 501 vertically arranged in the accommodating groove 111 and a pair of positioning blocks 502 symmetrically screwed in the accommodating groove 111; the lower end of the shovel base 501 is slid through the B plate 203 and is screwed on the upper surface of the pad plate 202; the upper end of the shovel base 501 is screwed with an inclined guide block 503; the horizontal distance between the lower end of the guide block 503 and the core body 107 is smaller than the horizontal distance between the upper end of the guide block 503 and the core body 107; the guide block 503 is of a T-shaped structure; the two positioning blocks 502 are slidably provided with a bearing block 504; a limiting piece 508 is horizontally arranged above the bearing block 504; the limiting piece 508 is screwed on the top wall of the accommodating groove 111; the lower surface of the limiting piece 508 is slidably attached to the upper surface of the bearing block 504; the sliding direction of the bearing block 504 is arranged in parallel with the sliding direction of the core body 107; the other end of the core body 107 is connected to the bearing block 504; the side of the bearing block 504 away from the shovel base 501 is vertically provided with a pair of grooves 509 corresponding to the core body 107; the grooves 509 are of a T-shaped structure; two mounting blocks 506 are clamped in the two grooves 509; the other ends of the two core bodies 107 are respectively welded on one side of the two mounting blocks 506; the side of the bearing block 504 close to the shovel base 501 is obliquely provided with a sliding groove 505 corresponding to the guide block 503; the sliding groove 505 is of a T-shaped structure; the guide block 503 is slidably fitted in the sliding groove 505; the horizontal distance between the lower end of the sliding groove 505 and the core body 107 is smaller than the horizontal distance between the upper end of the sliding groove 505 and the core body 107; the side of the bearing block 504 away from the shovel base 501 is vertically provided with a pair of blind holes 510; two reset springs 507 are arranged in the two blind holes 510; one end of the reset spring 507 is connected to the inner wall of the blind hole 510; the other end of the reset spring 507 extends out of the blind hole 510; the other end of the reset spring 507 abuts against the outer side of the upper mold core 104. In use, during the upward movement of the A plate 103, the guide block 503 slides obliquely upward in the sliding groove 505, which drives the bearing block 504 to move upward and in turn drives the core body 107 to move out of the through hole 106 through the mounting block 506, thereby realizing the core-pulling operation; during the combination of the moving die 1 and the static die 2, the guide block 503 slides obliquely downward in the sliding groove 505, which drives the bearing block 504 to move downward and in turn drives the core body 107 to insert into the through hole 106 through the mounting block 506, thereby ensuring the formation of the clamping groove of the next injection-molded product A and effectively improving the clamping groove formation effect and quality of the injection-molded product A.

[0044] The preferred embodiments of the application disclosed above are only to facilitate the elucidation of the application. The preferred embodiments do not describe all the details of the application and limit the application to the specific embodiments described. Obviously, many modifications and variations can be made in light of the teachings above. The description is chosen and described in order to best explain the principles of the application and its practical application to thereby enable others skilled in the art to best utilize the application and get the best results from the application. The application is only limited by the claims and their full scope and equivalents.

Claims

1. An injection mold for producing a plastic product having a side snap, characterized in that, It comprises a static mold (2) and a dynamic mold (1) arranged above the static mold (2); The static mold (2) comprises a B plate (203), a cushion plate (202) and a bottom plate (201) arranged horizontally from top to bottom; the upper surface of the B plate (203) is fixedly embedded with a pair of lower mold cores (205); the cushion plate (202) and the bottom plate (201) are connected through a pair of mold legs (204); a ejector pin assembly (3) is vertically arranged between the two mold legs (204); the upper part of the ejector pin assembly (3) can successively penetrate the cushion plate (202), the B plate (203) and the lower mold core (205); The dynamic mold (1) comprises a top plate (101), a flow distribution plate (102) and an A plate (103) arranged horizontally from top to bottom; the top plate (101), the flow distribution plate (102) and the A plate (103) are connected through screws; the A plate (103), the B plate (203) and the cushion plate (202) are connected through a mold locking buckle (4); the lower surface of the A plate (103) is fixedly embedded with a pair of upper mold cores (104) corresponding to the lower mold cores (205); a blocking strip (105) is vertically fixed in the inside of the upper mold core (104); through holes (106) are formed in the opposite two side walls of the upper mold core (104); a core pulling body (107) is slidably inserted into the through holes (106); one end of the core pulling body (107) can abut against one side of the blocking strip (105); the other end of the core pulling body (107) is connected to the cushion plate (202) through a push-pull assembly (5); One pair of accommodating grooves (111) for installing the push-pull assembly (5) are formed in the opposite two side edges of the A plate (103); the two pairs of accommodating grooves (111) are arranged on the lower surface of the A plate (103); The push-pull assembly (5) comprises a shovel base (501) vertically arranged in the accommodating groove (111) and a pair of symmetrical positioning blocks (502) fixed in the accommodating groove (111); the lower end of the shovel base (501) slidably penetrates the B plate (203) and is fixed on the upper surface of the cushion plate (202); the upper end of the shovel base (501) is obliquely fixed with a guide block (503); the two positioning blocks (502) are slidably provided with a bearing block (504); the sliding direction of the bearing block (504) is parallel to the sliding direction of the core pulling body (107); the other end of the core pulling body (107) is connected to the bearing block (504); the side surface of the bearing block (504) close to the shovel base (501) is obliquely provided with a sliding groove (505) corresponding to the guide block (503); the guide block (503) is slidably fitted in the sliding groove (505); A limiting piece (508) is horizontally arranged above the bearing block (504); the limiting piece (508) is fixed on the top wall of the accommodating groove (111); the lower surface of the limiting piece (508) is slidably attached to the upper surface of the bearing block (504); The bearing block (504) is vertically provided with a pair of recesses (509) corresponding to the core-pulling bodies (107) on the side away from the base (501); two mounting blocks (506) are connected in the recesses (509); the side of the two mounting blocks (506) is connected with the other end of the two core-pulling bodies (107) respectively. The bearing block (504) is vertically provided with a pair of blind holes (510) on the side away from the base (501); a reset spring (507) is arranged in the blind holes (510); one end of the reset spring (507) is connected to the inner wall of the blind hole (510); the other end of the reset spring (507) extends out of the blind hole (510). When the movable die (1) moves upward, the locking buckle (4) drives the B plate (203) to move upward synchronously with the movable die (1), so that the B plate (203) is separated from the backing plate (202), and then the push-pull assembly (5) drives the core-pulling body (107) to move out of the through hole (106), so that the core-pulling body (107) is separated from the clamping groove of the plastic product A, and then the movable die (1) continues to move upward, the locking buckle (4) drives the B plate (203) to separate from the A plate (103), and then the ejector pin assembly (3) is driven by the top rod of the injection molding machine to move upward, so that the plastic product A is moved out of the lower die core (205).

2. The injection mold for producing a plastic product having a side clamping groove according to claim 1, wherein, The ejector pin assembly (3) comprises an ejector pin bottom plate (301) horizontally arranged between the two die feet (204) and an ejector pin face plate (302) horizontally fixed on the upper surface of the ejector pin bottom plate (301); the ejector pin bottom plate (301) and the ejector pin face plate (302) can move up and down between the two die feet (204); a plurality of ejector pins (303) are vertically fixed on the upper surface of the ejector pin face plate (302); the upper ends of the ejector pins (303) sequentially penetrate the backing plate (202), the B plate (203) and the lower die core (205); the ejector pins (303) are in sliding fit with the backing plate (202), the B plate (203) and the lower die core (205).

3. The injection mold for producing a plastic product having a side clamping groove according to claim 1 or 2, wherein The upper surface of the top plate (101) is fixed with vertically arranged main flow channels (108); the lower end of the main flow channel (108) is horizontally connected with a flow dividing block (109); the flow dividing block (109) is fixedly embedded on the upper surface of the flow dividing plate (102); the lower surface of the flow dividing block (109) is vertically fixed with a pair of flow dividing channels (110) corresponding to the two upper die cores (104); the lower ends of the two flow dividing channels (110) sequentially penetrate the flow dividing plate (102) and the A plate (103) and are connected with the two upper die cores (104) respectively.

4. The injection mold for producing a plastic product having a side clamping groove according to claim 3, wherein, The locking buckle (4) comprises a support block (401) fixed to the side of the B plate (203), a first pull rod (402) with the upper end fixed to the side of the A plate (103), and a second pull rod (403) with the lower end fixed to the side of the backing plate (202); the upper surface of the support block (401) is provided with a first guide hole (404) corresponding to the first pull rod (402) and a second guide hole (405) corresponding to the second pull rod (403) side by side; an inner wall of the first guide hole (404) is provided with a first limiting convex (406); the first pull rod (402) is slidably inserted into the first guide hole (404); one side of the lower end of the first pull rod (402) is fixed with a first clamping block (408) corresponding to the first limiting convex (406); the upper surface of the first clamping block (408) is in abutment with the lower surface of the first limiting convex (406); an inner wall of the second guide hole (405) is provided with a second limiting convex (407); the second pull rod (403) is slidably inserted into the second guide hole (405); one side of the upper end of the second pull rod (403) is fixed with a second clamping block (409) corresponding to the second limiting convex (407); the lower surface of the second clamping block (409) is in abutment with the upper surface of the second limiting convex (407).

Citation Information

Patent Citations

  • Double-gate combined pouring system injection mold

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