Double-color mold convenient for core replacement

Abstract

The utility model belongs to the technical field of double-color molds, and particularly relates to a double-color mold convenient for core replacement, which comprises a mold, a push plate is fixedly mounted at the top of the mold, a pressing block is fixedly mounted in the mold, a limiting block is fixedly mounted on the right side of the mold, and a back locking block is fixedly mounted on the left side of the mold. And a sliding block is slidably connected between the front pressing block and the rear pressing block in the mold, a sliding block core is fixedly installed at the top of the sliding block, and wear-resisting blocks are fixedly installed on the left side and the right side of the sliding block. According to the double-color mold convenient to replace the core, the push block slides downwards along the limiting block or the back locking block, so that the wear-resisting block is extruded to push the sliding block to slide leftwards and rightwards along the pressing block, the second injection cavity moves to the position of the original first injection cavity, the second injection cavity is matched with the rear mold cavity, and therefore the function of replacing the cavities is completed, the structure is simple, operation is convenient, and practicability is high. The problems that in the background technology, in the using process, a cavity is inconvenient to replace, and using is inconvenient are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of two-color molds, in particular to a two-color mold convenient for core replacement. Background Technique

[0002] Two-color injection molding means injecting two different colors and different types of plastics, mostly a combination of a soft plastic and a hard plastic, through a two-color injection molding machine in a certain order, and organically combining the two plastics into a complete product. The two-color injection molding mold is used for the above injection molding process.

[0003] Generally, because the process of two-color injection molding is relatively complex, the mold requires high precision, there are many sliders on the mold, the hot runner is complex, and the selection of the feeding position is difficult. Ordinary two-color injection molding molds generally have only one product and two cavities. Since each ordinary two-color injection molding product requires two injections, when producing multiple products with the same soft plastic material and the same hard plastic material, multiple sets of molds need to be made and injected multiple times, which is not only time-consuming but also wasteful of raw materials. Moreover, since the products are individual entities, it is not conducive to the automation of subsequent processes; and the commonly used mechanical control of the slider movement of the mold has low precision and greatly affects the positioning precision of the mold.

[0004] For example, the two-color injection molding mold disclosed in the publication number CN101096121B greatly reduces the number of molds that need to be manufactured because multiple products are placed on the same set of molds; due to the use of auxiliary runners, the processing is convenient and more conducive to full-automatic production in the next step, saving production time; and the use of oil cylinders and square guide columns / sleeves makes the mold positioning more accurate, the product size precision higher and the appearance more precise.

[0005] However, this device is inconvenient to replace the cavity during use and is not convenient to use.

[0006] Therefore, we urgently need to provide a two-color mold convenient for core replacement. Content of the Utility Model

[0007] The purpose of the utility model is to provide a two-color mold convenient for core replacement, so as to solve the problem of inconvenient cavity replacement and inconvenient use proposed in the above background technique.

[0008] To achieve the above object, the present utility model provides the following technical solutions: A two-color mold facilitating core replacement, including a mold. A push plate is fixedly installed at the top of the mold. A pressing block is fixedly installed inside the mold. A limiting block is fixedly installed on the right side of the mold. An anti-lock block is fixedly installed on the left side of the mold. A slider is slidably connected between the front and rear pressing blocks inside the mold. A slider core is fixedly installed at the top of the slider. Wear-resistant blocks are fixedly installed on the left and right sides of the slider. A first injection cavity is formed at the top of the slider core. A second injection cavity is formed at the top of the slider core. A rear mold core is fixedly installed at the top of the push plate. A rear mold cavity is formed inside the rear mold core. Push blocks are installed inside the front and rear anti-lock blocks. A stroke limiter is fixedly installed at the bottom inside the mold.

[0009] Preferably, the distance between the front and rear pressing blocks is equal to the width of the slider, and the slider is slidably connected between the two pressing blocks. The pressing blocks play a role in positioning and guiding the movement of the slider.

[0010] Preferably, the first injection cavity and the second injection cavity are arranged at intervals, and the first injection cavity and the second injection cavity can cooperate with the rear mold cavity to realize the switching of the cavities.

[0011] Preferably, a convex block is formed at the top of the stroke limiter, and the cross-section of the convex block is triangular. A groove matching with the convex block is formed on the lower surface of the slider. The cooperation between the stroke limiter and the slider plays a role in positioning the switching of the cavities and improves the accuracy of core replacement.

[0012] Preferably, chutes matching with the push blocks are formed between the front and rear limiting blocks and the front and rear anti-lock blocks. The push blocks slide downward along the limiting blocks or the anti-lock blocks, thereby squeezing the wear-resistant blocks to push the slider to slide left and right along the pressing blocks to realize core replacement.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. For this two-color mold facilitating core replacement, the push blocks slide downward along the limiting blocks or the anti-lock blocks, thereby squeezing the wear-resistant blocks to push the slider to slide left and right along the pressing blocks, moving the second injection cavity to the position of the original first injection cavity, and making the second injection cavity cooperate with the rear mold cavity, thus completing the replacement function of the cavity. The structure is simple and the operation is convenient, solving the problem of inconvenient cavity replacement and inconvenient use proposed in the background technology.

[0015] 2. For this two-color mold facilitating core replacement, by setting the stroke limiter, it plays a role in positioning the switching of the cavities and improves the accuracy of core replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 Schematic diagram of the connection structure between the mold and the slider of the present utility model;

[0018] Figure 3 Schematic diagram of the connection structure between the slider of the present utility model and the limit block and the anti-locking block;

[0019] Figure 4 Schematic diagram of the rear mold core of the present utility model;

[0020] Figure 5 Schematic diagram of the connection structure between the mold and the stroke limiter of the present utility model;

[0021] Figure 6 Exploded view of the connection between the slider and the stroke limiter of the present utility model;

[0022] Figure 7 Schematic diagram of the stroke limiter of the present utility model.

[0023] In the figure: 1, mold; 2, ejector plate; 3, pressure block; 4, limit block; 5, anti-locking block; 6, slider; 7, slider core; 8, wear-resistant block; 9, first-shot cavity; 10, second-shot cavity; 11, rear mold core; 12, rear mold cavity; 13, ejector block; 14, stroke limiter. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-7 , the present utility model provides a technical solution:

[0026] Embodiment 1:

[0027] A two-color mold facilitating core replacement, including mold 1. A push plate 2 is fixedly installed at the top of mold 1. A pressing block 3 is fixedly installed inside mold 1. The distance between the front and rear pressing blocks 3 is equal to the width of the slider 6, and the slider 6 is slidably connected between the two pressing blocks 3. The pressing block 3 plays a role in positioning and guiding the movement of the slider 6. A limiting block 4 is fixedly installed on the right side of mold 1. The limiting block 4 and the anti-lock block 5 limit the stroke of the slider 6 and provide a locking force for the push block 13. An anti-lock block 5 is fixedly installed on the left side of mold 1. A chute matching the push block 13 is formed between the two limiting blocks 4 and the front and rear anti-lock blocks 5. By sliding the push block 13 downward along the limiting block 4 or the anti-lock block 5, the wear-resistant block 8 is squeezed to push the slider 6 to slide left and right along the pressing block 3, realizing core replacement. Inside mold 1, a slider 6 is slidably connected between the front and rear pressing blocks 3. A slider core 7 is fixedly installed at the top of the slider 6, realizing core replacement for the first shot and the second shot. Wear-resistant blocks 8 are fixedly installed on the left and right sides of the slider 6 to protect the slider 6 from wear. A first-shot cavity 9 is formed at the top of the slider core 7. A second-shot cavity 10 is formed at the top of the slider core 7. The first-shot cavity 9 and the second-shot cavity 10 are arranged at intervals, and the first-shot cavity 9 and the second-shot cavity 10 can cooperate with the rear mold cavity 12 to realize the switching of the cavities. A rear mold core 11 is fixedly installed at the top of the push plate 2. A rear mold cavity 12 is formed inside the rear mold core 11. A push block 13 is installed inside the front and rear anti-lock blocks 5. A stroke limiter 14 is fixedly installed at the bottom inside mold 1. A convex block is formed at the top of the stroke limiter 14, and the cross-section of the convex block is triangular. A groove matching the convex block is formed on the lower surface of the slider 6. The cooperation between the stroke limiter 14 and the slider 6 plays a role in positioning the switching of the cavities, improving the accuracy of core replacement.

[0028] During use, when core replacement is required, mold 1 is opened, the push block 13 is pulled upward to make the push block 13 leave the locking force of the anti-lock block 5, and then the push block 13 is inserted into the limiting block 4. When mold 1 is closed, due to the downward thrust of the push block 13, the wear-resistant block 8 is squeezed to push the slider 6 to slide left and right along the pressing block 3, so that the second-shot cavity 10 moves to the position of the original first-shot cavity 9, and the second-shot cavity 10 cooperates with the rear mold cavity 12, thus completing the function of cavity replacement. The structure is simple and the operation is convenient.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

Claims

1. A two-color mold that is easy to change cores, comprising a mold (1), characterized in that: A push plate (2) is fixedly installed on the top of the mold (1), a pressure block (3) is fixedly installed inside the mold (1), a limit block (4) is fixedly installed on the right side of the mold (1), and a locking block (5) is fixedly installed on the left side of the mold (1). A slider (6) is slidably connected between the front and rear pressure blocks (3) inside the mold (1), a slider core (7) is fixedly installed on the top of the slider (6), and wear-resistant blocks (8) are fixedly installed on the left and right sides of the slider (6). A first-shot cavity (9) is provided on the top of the slider core (7), and a second-shot cavity (10) is provided on the top of the slider core (7). A rear mold core (11) is fixedly installed on the top of the push plate (2), and a rear mold cavity (12) is provided inside the rear mold core (11). Push blocks (13) are installed inside the front and rear locking blocks (5), and a travel limiter (14) is fixedly installed at the bottom of the mold (1).

2. A two-color mold that is easy to change cores according to claim 1, characterized in that: The distance between the two front and rear pressing blocks (3) is equal to the width of the sliding block (6), and the sliding block (6) is slidably connected between the two pressing blocks (3).

3. The two-color mold for easy core replacement according to claim 1, characterized in that: The one-shot mold cavity (9) and the two-shot mold cavity (10) are arranged at intervals, and the one-shot mold cavity (9) and the two-shot mold cavity (10) can be matched with the rear mold cavity (12).

4. A two-color mold that is easy to change cores according to claim 1, characterized in that: The top of the travel limiter (14) is provided with a protrusion, and the cross section of the protrusion is triangular, and the lower surface of the sliding block (6) is provided with a groove matching the protrusion.

5. The two-color mold for easy core replacement according to claim 1, characterized in that: A sliding groove matched with the push block (13) is provided between the two front and rear limit blocks (4) and the two front and rear anti-locking blocks (5).

Images