Combined injection mold

Abstract

The utility model relates to the technical field of molds, in particular to a combined type injection mold which comprises a first mold, a demolding plate is arranged in the first mold, connecting pieces are arranged at the two ends of the demolding plate, a fixing plate is fixedly installed in the first mold, and a demolding spring is arranged between the fixing plate and the demolding plate; clamping frames are fixedly mounted at the two ends of the second mold, and a mold groove is formed in the surface of the second mold; the mold has the beneficial effects that plastic melt can be injected into the mold groove, after the plastic melt is cooled and formed, the second mold is controlled to be far away from the first mold, and in the process that the second mold is far away from the first mold, the clamping frame is connected with the connecting pieces at the two ends of the demolding plate, so that the clamping frame moves under the action of the connecting pieces in the displacement process; the injection molding finished product is demoulded from the surface of the first mould, so that the problem of difficult demoulding caused by insufficient local stress of the injection molding finished product due to weak or non-uniform distribution of the acting force of the ejector pin in the demoulding process is avoided.

Description

Technical Field

[0001] This utility model relates to the field of molds, specifically a combination injection mold. Background Technology

[0002] Injection molds play a crucial role in modern industrial production, directly impacting product molding quality, production efficiency, and cost control. A well-designed mold ensures uniform filling of molten plastic, reducing defects such as bubbles, shrinkage cavities, and deformation, thus improving product performance and appearance. The process involves injecting molten plastic into the mold, combined with precise temperature and pressure control, to ensure the material flows fully within the mold cavity and adheres tightly to the mold surface. After cooling and solidification, the finished product is removed from the mold using an ejector mechanism, completing the entire injection molding process.

[0003] In the existing technology, traditional injection molds mainly consist of a moving mold plate, a fixed mold plate, an injection molding device, and ejector pins. The moving mold plate and the fixed mold plate cooperate to form a molding cavity, which is used to define the shape of the product. The injection molding device is responsible for injecting molten plastic into the molding cavity to ensure uniform material filling. The ejector pins push the product out of the mold after it cools down, completing the demolding process. All components work together to ensure the quality of the injection molded product.

[0004] However, when using traditional injection molds, the ejector pins, due to their simple design and small force-bearing area, result in weak or uneven force distribution during demolding, leading to insufficient local force on the molded product and difficulty in demolding. To address this, this utility model proposes a combined injection mold to solve the aforementioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a modular injection mold to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a combined injection mold, comprising: a first mold, wherein a ejector plate is provided inside the first mold, and connecting members are provided at both ends of the ejector plate.

[0007] A fixing plate is fixedly installed inside the first mold, and a demolding spring is provided between the fixing plate and the demolding template;

[0008] The second mold has a clamping frame fixedly installed at both ends, and a mold groove is opened on the surface of the second mold.

[0009] Preferably, the first mold is a rectangular parallelepiped structure, a first mounting plate is fixedly installed at one end of the first mold, a plurality of mounting holes are provided on the surface of the first mounting plate, a module is fixedly installed at the other end of the first mold, a demolding groove is provided inside the first mold, and slots are provided on both sides of the first mold.

[0010] Preferably, the overall shape of the demolding groove is a "hui" - shaped structure. A fixing plate is fixedly installed inside the demolding groove. The fixing plate is in the shape of a square plate as a whole. Positioning holes are opened at the corners of the surface of the fixing plate, and an injection hole is opened in the center of the demolding groove.

[0011] Preferably, the module can be snapped into the demolding groove of the second mold. A plurality of demolding holes are opened at the corners of the surface of the module. The demolding holes are directly in front of the positioning holes on the surface of the fixing plate, and one end of the injection hole is located in the center of the module.

[0012] Preferably, protrusions are provided on both sides of the demolding plate. The protrusions are stuck in the card slots on both sides of the first mold. The first mold can displace along the card slots in the demolding groove. A plurality of demolding rods are fixedly installed at the corners of the surface of the demolding plate. One end of the demolding rod passes through the positioning hole and is placed in the demolding hole. Two sets of symmetrically - structured demolding springs are fixedly installed between the demolding plate and the fixing plate.

[0013] Preferably, two sets of connecting members are provided. The two sets of connecting members are symmetrically fixedly installed on the side walls of the protrusions at both ends of the demolding plate. An installation screw hole is opened at one end of the connecting member, and a clamping member is screwed in the installation screw hole.

[0014] Preferably, a second installation plate is fixedly installed on the surface of one end of the second mold. Card frames are fixedly installed on the side walls at both ends of the second mold. An activity slot is opened on the surface of the card frame, and a clamping member is snapped into the activity slot. A plurality of cooling pipelines are opened inside the second mold.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The combined injection mold proposed by the present utility model can inject plastic melt into the mold groove. After waiting for it to cool and form, control the second mold to move away from the first mold. During the process of the second mold moving away from the first mold, since its card frame is connected to the connecting members at both ends of the demolding plate, during the displacement process, the card frame moves under the action of the connecting members, so that the injection - molded product is demolded from the surface of the first mold. This avoids the problem that the ejector pin force is weak or unevenly distributed during the demolding process, resulting in insufficient local force on the injection - molded product and difficult demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the present utility model;

[0018] Figure 2 It is a schematic diagram of the demolding process of the structure of the present utility model;

[0019] Figure 3 It is a schematic structural diagram of the first mold of the present utility model;

[0020] Figure 4This is a schematic cross-sectional view of the first mold of this utility model.

[0021] Figure 5 This is a schematic diagram of the demolding structure of this utility model;

[0022] Figure 6 This is a schematic cross-sectional view of the second mold of this utility model.

[0023] Figure 7 This is a schematic diagram of the second mold of this utility model.

[0024] In the diagram: 1. First mold; 2. Demolding template; 3. Connector; 4. Fixing plate; 5. Demolding spring; 6. Second mold; 7. Clip frame; 8. Mold groove; 9. First mounting plate; 10. Module; 11. Demolding groove;

[0025] 12. Cooling pipe; 13. Injection hole; 14. Demolding hole; 15. Slot; 16. Demolding rod; 17. Clip; 18. Second mounting plate; 19. Movable slot. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Example 1: Please refer to Figures 1-7 This utility model provides a technical solution: a combined injection mold, including: a first mold 1, a demolding template 2 is provided inside the first mold 1, connecting parts 3 are provided at both ends of the demolding template 2, a fixing plate 4 is fixedly installed inside the first mold 1, and a demolding spring 5 is provided between the fixing plate 4 and the demolding template 2;

[0028] The second mold 6 has a clamping frame 7 fixedly installed at both ends, and a mold groove 8 is opened on the surface of the second mold 6.

[0029] In use, molten plastic can be injected into the mold groove 8 and waited for it to cool and solidify. Then, the second mold 6 is controlled to move away from the first mold 1. During the process of the second mold 6 moving away from the first mold 1, the clamping frame 7 is connected to the connecting parts 3 at both ends of the ejector plate 2. Therefore, during the displacement process, the clamping frame 7 moves under the action of the connecting parts 3, so that the injection molded product is demolded from the surface of the first mold 1. This avoids the problem of weak or uneven force of the ejector pins during the demolding process, which leads to insufficient local force on the injection molded product and difficulty in demolding.

[0030] Embodiment 2: On the basis of Embodiment 1, in order to ensure smooth demolding of the finished product during demolding, protrusions are provided on both sides of the demolding plate 2. The protrusions are stuck in the clamping grooves 15 on both sides of the first mold 1. The first mold 1 can displace along the clamping grooves 15 in the demolding groove 11. A number of demolding rods 16 are fixedly installed at the corners of the surface of the demolding plate 2. One end of the demolding rod 16 passes through the positioning hole and is placed in the demolding hole 14. Two sets of symmetrically structured demolding springs 5 are fixedly installed between the demolding plate 2 and the fixed plate 4; the demolding groove 11 is integrally in a "return" - shaped structure. A fixed plate 4 is fixedly installed in the demolding groove 11. The fixed plate 4 is integrally in a square plate - like structure. Positioning holes are opened at the corners of the surface of the fixed plate 4. An injection hole 13 is opened at the center of the demolding groove 11; the first mold 1 is integrally in a cuboid structure. A first mounting plate 9 is fixedly installed at one end of the first mold 1. A number of mounting holes are opened on the surface of the first mounting plate 9. A module 10 is fixedly installed at the other end of the first mold 1. A demolding groove 11 is opened inside the first mold 1. Clamping grooves 15 are opened on both side walls of the first mold 1;

[0031] During demolding, the second mold 6 is controlled to move away from the first mold 1. During the movement, a clamping part 17 is stuck in the clamping groove 15 of the clamping frame 7. When the clamping part 17 is placed at one end of the clamping groove 19 close to the first mold 1 during the movement of the second mold 6, the second mold 6 will continue to move. At this time, the clamping frame 7 will drive the whole clamping part 17 to displace in the direction of the second mold 6. Under the drive of the clamping part 17, the demolding plate 2 will also displace in the same direction. At this time, the demolding rod 16 on the demolding plate 2 will pass through the demolding hole 14 to push down the finished product stuck on the module 10, avoiding the problem of difficult demolding caused by insufficient acting force during the demolding process.

[0032] Embodiment 3: On the basis of Embodiment 2, in order to facilitate injection molding, a second mold 6 is provided. A second mounting plate 18 is fixedly installed on the surface of one end of the second mold 6. Clamping frames 7 are fixedly installed on both side walls at both ends of the second mold 6. An activity slot 19 is opened on the surface of the clamping frame 7. A clamping part 17 is clamped in the activity slot 19. A number of cooling pipelines 12 are opened inside the second mold 6; Two sets of connecting parts 3 are provided. The two sets of connecting parts 3 are symmetrically fixedly installed on the side walls of the protrusions at both ends of the demolding plate 2. An installation screw hole is opened at one end of the connecting part 3. A clamping part 17 is screwed in the installation screw hole; The module 10 can be clamped into the demolding groove 11 of the second mold 6. A number of demolding holes 14 are opened at the corners of the surface of the module 10. The demolding holes 14 are directly in front of the positioning holes on the surface of the fixed plate 4. One end of the injection hole 13 is located at the center of the module 10;

[0033] Before injection molding, the movable slot 19 can be aligned with the mounting screw hole on the connector 3. Then, the clip 17 is threaded into the mounting screw hole, thereby connecting the clip frame 7 and the connector 3, which facilitates the installation and disassembly of the component. During the injection molding process, the molten metal is injected into the mold cavity formed by the mold slot 18 and the module 10 through the injection hole 13. Multiple cooling pipes 12 are provided in the second mold 6 to accelerate its cooling and molding, making the entire injection molding process convenient and fast.

[0034] In actual use, plastic melt can be injected into the mold groove 8 and waited for it to cool and solidify. Then, the second mold 6 is controlled to move away from the first mold 1. During the process of the second mold 6 moving away from the first mold 1, the clamping frame 7 is connected to the connecting parts 3 at both ends of the ejector plate 2. Therefore, during the displacement process, the clamping frame 7 moves under the action of the connecting parts 3, so that the injection molded product is demolded from the surface of the first mold 1. This avoids the problem of weak or uneven force of the ejector pins during the demolding process, which leads to insufficient local force on the injection molded product and difficulty in demolding.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular injection mold, comprising: The first mold (1) has a stripper plate (2) disposed therein, and connectors (3) are provided at both ends of the stripper plate (2). It is characterized in that a fixed plate (4) is fixedly installed in the first mold (1), and a demolding spring (5) is provided between the fixed plate (4) and the stripper plate (2). The second mold (6) has clamping frames (7) fixedly installed at both ends, and a mold groove (8) is formed on the surface of the second mold (6).

2. The combined injection mold according to claim 1, characterized in that: The first mold (1) is integrally in a cuboid structure. A first mounting plate (9) is fixedly installed at one end of the first mold (1), and a plurality of mounting holes are formed on the surface of the first mounting plate (9). A module (10) is fixedly installed at the other end of the first mold (1). A demolding groove (11) is formed inside the first mold (1), and clamping grooves (15) are formed on both side walls of the first mold (1).

3. A combined injection mold according to claim 2, characterized in that: The demolding groove (11) is integrally in a "return" shape structure. A fixed plate (4) is fixedly installed in the demolding groove (11). The fixed plate (4) is integrally in a square plate structure, and positioning holes are formed at the corners of the surface of the fixed plate (4). An injection hole (13) is formed in the center of the demolding groove (11).

4. A combined injection mold according to claim 3, characterized in that: The module (10) can be snapped into the demolding groove (11) of the second mold (6). A plurality of demolding holes (14) are formed at the corners of the surface of the module (10). The demolding holes (14) are directly in front of the positioning holes on the surface of the fixed plate (4), and one end of the injection hole (13) is located in the center of the module (10).

5. A combined injection mold according to claim 4, characterized in that: Protrusions are provided on both sides of the stripper plate (2), and the protrusions are clamped in the clamping grooves (15) on both sides of the first mold (1). The first mold (1) can be displaced along the clamping grooves (15) in the demolding groove (11). A plurality of demolding rods (16) are fixedly installed at the corners of the surface of the stripper plate (2). One end of the demolding rod (16) passes through the positioning hole and is placed in the demolding hole (14). Two groups of symmetrically structured demolding springs (5) are fixedly installed between the stripper plate (2) and the fixed plate (4).

6. A combined injection mold according to claim 5, characterized in that: There are two groups of the connectors (3), and the two groups of connectors (3) are symmetrically fixedly installed on the side walls of the protrusions at both ends of the stripper plate (2). An installation screw hole is formed at one end of the connector (3), and a clamping member (17) is screwed in the installation screw hole.

7. A combined injection mold according to claim 6, characterized in that: A second mounting plate (18) is fixedly installed on the surface at one end of the second mold (6). Clamping frames (7) are fixedly installed on both side walls at both ends of the second mold (6). An activity slot (19) is formed on the surface of the clamping frame (7), and the clamping member (17) is snapped into the activity slot (19). A plurality of cooling pipes (12) are formed inside the second mold (6).

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