Injection mold capable of preventing product from sticking to front mold
By setting up assembly grooves, spring blocks and limit plate structures in the injection mold and using springs to push the limit plate to slide, the problem of product sticking to the front mold is solved, smooth demolding is achieved and tearing and straining are prevented.
Patent Information
- Application Number
- CN202422778391.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-11-14
AI Technical Summary
During the production process of existing injection molds, the product is easily stuck to the fixed mold, resulting in tearing and straining problems.
An injection mold is designed to prevent products from sticking to the front mold. By setting an assembly groove, spring block, limit plate and spring structure on the front mold core, when the mold is opened, the spring pushes the limit plate to drive the spring block to slide, pushing the injection molded product out of the front mold core smoothly.
It effectively prevents the product from sticking to the front mold, avoids tearing and straining, and improves the demoulding effect of the injection molded product.
Smart Images
Figure CN223354809U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of injection molds, and particularly relates to an injection mold capable of preventing products from sticking to a front mold. Background Art
[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. Its advantages include high production speed, high efficiency, automated operation, a wide variety of designs and colors, shapes ranging from simple to complex, and sizes ranging from large to small. Furthermore, it produces precise product dimensions, is easily updated, and can produce complex shapes. Injection molding is suitable for mass production and the molding of complex products.
[0003] Traditional injection molds consist of two parts: a movable mold and a fixed mold. The movable mold (rear mold) is installed on the movable template of the injection molding machine, and the fixed mold (front mold) is installed on the fixed template of the injection molding machine. During injection molding, the movable mold and the fixed mold are closed to form the pouring system and the cavity. When the mold is opened, the movable mold and the fixed mold are separated to remove the plastic product.
[0004] However, during the production process of existing injection molded products, the product may stick to the front mold, causing the product to be torn and damaged due to sticking to the front mold. Therefore, an injection mold that can prevent the product from sticking to the front mold is urgently needed to solve the above problem. Utility Model Content
[0005] In view of the problems raised by the above background technology, the purpose of the present utility model is to provide an injection mold that prevents the product from sticking to the front mold.
[0006] In order to achieve the above technical objectives, the technical solutions adopted by this utility model are as follows:
[0007] An injection mold for preventing products from sticking to a front mold, comprising a front mold core and a rear mold core, the front mold core and the rear mold core cooperate to form a mold cavity for the injection molded product, the top of the front mold core is provided with a plurality of assembly grooves, a spring block is slidably installed in the assembly groove, the bottom of the spring block passes through the front mold core and extends into the mold cavity, a flow channel is provided at the bottom of the spring block, a glue inlet connected to the flow channel is provided on the upper side of the spring block, a limiting plate is installed on the outer side of the spring block, the limiting plate is slidably set in the assembly groove, a spring is installed on the top of the limiting plate, an A plate is installed on the outer side of the front mold core, a glue inlet flow channel groove is provided on the top surface of the A plate, the output end of the glue inlet flow channel groove is connected to the glue inlet, and the top free end of the spring is installed in the A plate.
[0008] Furthermore, a nozzle plate is mounted on top of the A-plate, a nozzle hook is mounted within the nozzle plate, and the bottom of the nozzle hook is mounted within the rubber inlet runner groove. This structural design allows the rubber to wrap around the undercut of the nozzle hook during injection molding, facilitating subsequent removal of the runner-molded rubber.
[0009] Furthermore, a B-plate is mounted on the outside of the rear mold core, a carrier plate is mounted on the bottom of the B-plate, and a plurality of inserts are mounted within the carrier plate. The tops of the inserts penetrate the B-plate and the rear mold core and extend into the mold cavity, with the inserts corresponding to the spring blocks one-to-one. This structural design improves the ejection efficiency of the injection molded product.
[0010] Furthermore, a push rod is slidably mounted in the insert, the top of the push rod is connected to the mold cavity, and the bottom of the push rod passes through the carrier plate and is mounted on the ejector plate. This structural design can prevent the injection molded product from sticking to the rear mold core.
[0011] It is further defined that the spring block and the limiting plate are integrally formed. Such a structural design is convenient for production and molding.
[0012] The beneficial effects of the utility model are as follows: the utility model provides an assembly groove, a spring block, a limit plate and a spring, so that when the mold is opened after injection molding and cooling are completed, the spring applies a thrust to the spring block, so that the spring pushes the limit plate, and the limit plate drives the spring block to slide in the assembly groove, so that the sliding spring block pushes the injection molded product to smoothly separate from the front mold core, so as to achieve the purpose of solving the problem of product sticking to the front mold and prevent the product from being torn and damaged due to sticking to the front mold. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The present invention can be further described by way of non-limiting examples given in the accompanying drawings;
[0014] Figure 1 This is a schematic diagram of the axial structure of an injection mold for preventing products from sticking to the front mold according to an embodiment of the utility model;
[0015] Figure 2 This is a schematic cross-sectional view of an injection mold for preventing a product from sticking to a front mold according to an embodiment of the present utility model;
[0016] Figure 3 This is an enlarged structural diagram of point A of an injection mold for preventing a product from sticking to the front mold according to an embodiment of the utility model;
[0017] Figure 4 This is a schematic diagram of a sprue hook connection structure of an injection mold for preventing products from sticking to the front mold according to an embodiment of the utility model;
[0018] The main component symbols are described as follows:
[0019] Front mold core 1, rear mold core 2, cavity 120, assembly groove 3, spring block 4, runner 5, glue inlet 6, limit plate 7, spring 8, A plate 9, glue inlet runner groove 10, nozzle hook 11, B plate 12, support plate 13, insert 14, and ejector pin 15. DETAILED DESCRIPTION
[0020] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.
[0021] like Figure 1-4 As shown, the utility model is an injection mold for preventing products from sticking to the front mold, the front mold core 1 and the rear mold core 2 cooperate to form a cavity 120 for the injection molded product, the top of the front mold core 1 is provided with a plurality of assembly grooves 3, and a spring block 4 is slidably installed in the assembly groove 3, the bottom of the spring block 4 passes through the front mold core 1 and extends into the cavity 120, the bottom of the spring block 4 is provided with a flow channel 5, the upper side of the spring block 4 is provided with a glue inlet 6 connected to the flow channel 5, a limit plate 7 is installed on the outside of the spring block 4, the limit plate 7 is slidably set in the assembly groove 3, a spring 8 is installed on the top of the limit plate 7, an A plate 9 is installed on the outside of the front mold core 1, the top surface of the A plate 9 is provided with a glue feed flow channel groove 10, the output end of the glue feed flow channel groove 10 is connected to the glue inlet 6, and the top free end of the spring 8 is installed in the A plate 9.
[0022] Preferably, a nozzle plate is mounted on top of plate A 9, within which a nozzle hook 11 is mounted. The bottom of nozzle hook 11 is mounted within the rubber inlet runner groove 10. This structural design allows the rubber to wrap around the undercut of nozzle hook 11 during injection molding, facilitating subsequent removal of the runner-molded rubber. In practice, other mounting configurations for nozzle hook 11 may also be considered, depending on the specific situation.
[0023] Preferably, a B-plate 12 is mounted on the outside of the rear mold core 2. A carrier plate 13 is mounted on the bottom of the B-plate 12. Several inserts 14 are mounted within the carrier plate 13. The tops of the inserts 14 penetrate the B-plate 12 and the rear mold core 2 and extend into the mold cavity 120. Each insert 14 corresponds to each spring block 4. This structural design improves the ejection efficiency of the injection molded product. In practice, other mounting configurations for the inserts 14 may also be considered depending on the specific situation.
[0024] Preferably, a push rod 15 is slidably mounted within the insert 14. The top of the push rod 15 communicates with the mold cavity 120, while the bottom of the push rod 15 extends through the carrier plate 13 and is mounted on the ejector plate. This structural design prevents the molded product from sticking to the rear mold core 2. In practice, other structural shapes for the push rod 15 are also contemplated, depending on the specific situation.
[0025] Preferably, the spring block 4 and the limiting plate 7 are provided with an integrally formed structure. Such a structural design is convenient for production and molding. In fact, other forming structural shapes of the spring block 4 and the limiting plate 7 can also be considered according to specific circumstances.
[0026] In this embodiment, when injection production is carried out, the front mold core 1 and the rear mold core 2 are combined to form a cavity 120, and injection molding is performed by an external injection molding machine, so that the rubber material can flow in the rubber feed runner groove 10, and flow into the rubber inlet 6 through the rubber feed runner groove 10, and finally flow out from the rubber inlet 6 into the runner 5, and finally fill into the cavity 120 for molding. Afterwards, when the mold is opened, the front mold core 1 and the rear mold core 2 are separated, and after the rear mold core 2 withdraws from the connection with the front mold core 1, the spring 8 applies a thrust to the limit plate 7, so that the spring 8 pushes the limit plate 7, and the limit plate 7 drives the spring block 4 to slide in the assembly groove 3, so that the sliding spring block 4 pushes the injection molded product to smoothly separate from the front mold core 1, so as to achieve the purpose of solving the problem of product sticking to the front mold.
[0027] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by persons skilled in the art without departing from the spirit and technical principles disclosed herein shall be covered by the claims of the present invention.
Claims
1. An injection mold for preventing products from sticking to the front mold, characterized by: The invention comprises a front mold core (1) and a rear mold core (2), wherein the front mold core (1) and the rear mold core (2) cooperate to form a mold cavity (120) of an injection molded product, a plurality of assembly grooves (3) are provided on the top of the front mold core (1), a spring block (4) is slidably installed in the assembly groove (3), the bottom of the spring block (4) passes through the front mold core (1) and extends into the mold cavity (120), a flow channel (5) is provided at the bottom of the spring block (4), and a spring block (5) is provided on the upper side of the spring block (4) and is connected to the flow channel (5). The glue inlet (6) is provided, a limit plate (7) is installed on the outer side of the spring block (4), the limit plate (7) is slidably arranged in the assembly groove (3), a spring (8) is installed on the top of the limit plate (7), an A plate (9) is installed on the outer side of the front mold core (1), a glue inlet flow channel groove (10) is provided on the top surface of the A plate (9), the output end of the glue inlet flow channel groove (10) is connected to the glue inlet (6), and the top free end of the spring (8) is installed in the A plate (9).
2. The injection mold for preventing products from sticking to the front mold according to claim 1, characterized in that: A nozzle plate is also installed on the top of the A plate (9), a nozzle hook needle (11) is installed in the nozzle plate, and the bottom of the nozzle hook needle (11) is installed in the glue inlet flow channel groove (10).
3. The injection mold for preventing products from sticking to the front mold according to claim 2, characterized in that: A B plate (12) is installed on the outer side of the rear mold core (2), a support plate (13) is installed on the bottom of the B plate (12), and a plurality of inserts (14) are installed in the support plate (13). The top of the insert (14) passes through the B plate (12) and the rear mold core (2) and extends into the mold cavity (120), and the insert (14) corresponds to the spring block (4) one by one.
4. The injection mold for preventing products from sticking to the front mold according to claim 3, characterized in that: A push rod (15) is also slidably installed in the insert (14), the top of the push rod (15) is connected to the cavity (120), and the bottom of the push rod (15) passes through the support plate (13) and is installed on the ejector plate.
5. The injection mold for preventing products from sticking to the front mold according to claim 4, characterized in that: The spring block (4) and the limiting plate (7) are arranged as an integrally formed structure.