A rotary two-color injection mold

Abstract

The utility model provides a rotary two-color injection mold, comprising a fixed mold, a movable mold and a slide linkage structure, wherein a first core and a second core are arranged at intervals on the fixed mold, a first cavity is arranged on the movable mold, the first cavity can be molded with the first core for molding a single-color product, and the first cavity can be molded with the second core for molding a two-color product after being rotated; the slide linkage structure comprises at least one slide that can slide relative to the first cavity, the slide is used to limit the single-color product to prevent the movable mold from shaking when the movable mold rotates; an oblique push groove corresponding to the slide is arranged on the first core, and when the mold is closed once, the oblique push groove pushes the slide to move toward the first cavity; a shovel is arranged on the second core, and after the first cavity is rotated, the slide corresponds to the shovel, and when the mold is closed twice, the shovel pushes the slide to slide in a direction away from the first cavity; the rotary two-color injection mold provided by the utility model overcomes the defect of poor injection quality of the existing two-color injection mold.

Description

Technical Field

[0001] The utility model relates to the field of double-color injection molds, in particular to a rotary double-color injection mold. Background Art

[0002] Most plastic products are formed by injection molds. With the help of injection molds, plastic products with the required shape can be efficiently formed, which has accelerated the development of injection molds. Two-color injection refers to a process that uses two different colors or different types of plastics to make finished products with different colors or different hardness through injection molding.

[0003] The existing two-color injection mold needs two injection moldings to mold two-color products. When the mold is closed for the first time, the cavity and the first core are molded together to make a single-color product. After the single-color product is injection molded, the mold is opened, and the single-color product remains on the cavity. Then the movable mold drives the cavity to rotate and correspond to the second core. Then the cavity and the second core are molded together to make a two-color product, and finally the mold is opened to eject the product. In the above process, when the movable mold drives the cavity and the single-color product to rotate, the product is prone to shaking and shifting, affecting the injection molding quality. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The problem to be solved by the utility model is to provide a rotary two-color injection mold to overcome the defect of poor injection quality of the existing two-color injection mold.

[0006] (II) Technical solution

[0007] In order to solve the technical problem, the utility model provides a rotary two-color injection mold, comprising:

[0008] A fixed mold, on which a first core and a second core are arranged at intervals;

[0009] The movable mold can slide and rotate relative to the fixed mold, and a first cavity is arranged on the movable mold; the first cavity can be molded with the first core to form a single-color product, and the first cavity can be molded with the second core to form a two-color product after rotating;

[0010] The slide linkage structure includes at least one slide that can slide relative to the first cavity, and the slide is used to limit the single-color product to prevent it from shaking when the movable mold rotates; the first core is provided with an inclined push groove corresponding to the slide, and when the mold is closed once, the inclined push groove pushes the slide to move toward the first cavity; the second core is provided with a shovel, after the first cavity rotates, the slide corresponds to the shovel, and when the mold is closed twice, the shovel pushes the slide to slide in a direction away from the first cavity.

[0011] In some embodiments, the slide is provided with a first oblique retaining wall and a second oblique retaining wall, the oblique push groove is provided with a first oblique push wall adapted to the first oblique retaining wall, and the shovel is provided with a second oblique push wall adapted to the second oblique retaining wall. The slide includes a mutually fixed limit head and a sliding seat, the limit head is used to resist and limit the single-color product, the first oblique retaining wall is provided on the limit head, and the second oblique retaining wall is provided in the sliding seat.

[0012] In some embodiments, the two sides of the slider are symmetrically mounted with slider strips, and the sliding seat is slidably mounted between the two slider strips. A limiting ball is mounted on one end of the slider strip facing the sliding seat, and a first limiting groove and a second limiting groove adapted to the limiting ball are arranged at intervals on the side wall of the sliding seat; an anti-wear insert is mounted below the slider.

[0013] In some embodiments, there are two slides, one of which is slidably mounted on the first cavity, and the other is slidably mounted on the movable mold, and the two slides are respectively located at two ends of the first cavity.

[0014] In some embodiments, a second cavity is further provided on the movable mold, the second cavity is centrally symmetrically arranged with respect to the first cavity, and the sliding linkage structure is provided on the second cavity.

[0015] In some embodiments, a top plate is fixed on the fixed mold, and a first nozzle and a second nozzle are spaced apart on the top plate. The first nozzle is used to inject a single color plastic into the first core, and the second nozzle is used to inject a two-color plastic into the second core.

[0016] In some embodiments, a connecting seat is installed between the ejector plate and the fixed mold, an ejector plate is slidably installed on the connecting seat, a plurality of ejectors are installed on the ejector plate, one end of the ejector passes through the fixed mold and the second core for ejecting the two-color product.

[0017] (III) Beneficial effects

[0018] The utility model provides a rotary two-color injection mold, which is additionally provided with a slide linkage structure. During the first mold closing, the oblique push groove can push the slide to move toward the first cavity. After the one-color product is injection molded, the limit head of the slide is pressed against and limits the one-color product to prevent the one-color product from shaking and shifting when the movable mold rotates, thereby ensuring the injection molding quality. During the second mold closing, the shovel pushes the slide to slide away from the first cavity, and the limit head is separated from the one-color product to avoid affecting the secondary injection molding. The above structure can not only improve the injection molding quality, but also has a simple structure, saves mold space, and has simple mold movement, thereby reducing mold cost, thereby overcoming the defect of poor injection molding quality of the existing two-color injection mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a three-dimensional diagram of a rotary two-color injection mold of the utility model;

[0021] Figure 2 This is an exploded view of a rotary two-color injection mold of the utility model;

[0022] Figure 3 This is a three-dimensional diagram of a movable mold of a rotating two-color injection mold of the utility model;

[0023] Figure 4 This is a three-dimensional diagram of the connection between the fixed mold, the connecting seat and the ejector plate of a rotary two-color injection mold of the utility model;

[0024] Figure 5 This is a three-dimensional diagram of a fixed mold of a rotary two-color injection mold of the utility model;

[0025] Figure 6 This is a three-dimensional diagram of the connection between the first cavity and the slide of a rotary two-color injection mold of the utility model;

[0026] Figure 7 This is an exploded view of a sliding linkage structure of a rotary two-color injection mold of the utility model;

[0027] Figure 8 This is a three-dimensional diagram of a rotating two-color injection mold slide of the utility model;

[0028] The names of the components corresponding to the various figure marks in the figure are: 1. fixed mold; 2. first core; 3. second core; 4. first cavity; 5. slide; 6. oblique push groove; 7. shovel; 8. first oblique retaining wall; 9. second oblique retaining wall; 10. first oblique push wall; 11. second oblique push wall; 12. limit head; 13. sliding seat; 14. slide pressure strip; 15. limit ball; 16. first limit groove; 17. second limit groove; 18. anti-wear insert; 19. second cavity; 20. ejector plate; 21. first nozzle; 22. second nozzle; 23. connecting seat; 24. ejector plate; 25. movable mold. DETAILED DESCRIPTION

[0029] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0031] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0032] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0033] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0034] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0035] See also Figures 1 to 8 The utility model provides a rotary two-color injection mold, comprising a fixed mold 1, a movable mold 25 and a sliding linkage structure.

[0036] See also Figures 2 to 4, the fixed mold 1 is provided with a first core 2 and a second core 3 at intervals. The movable mold 25 can slide and rotate relative to the fixed mold 1, and the movable mold 25 is provided with a first cavity 4; the first cavity 4 can be molded with the first core 2 for molding a single-color product, and after the movable mold 25 drives the first cavity 4 to rotate 180 degrees, the first cavity 4 can be molded with the second core 3 for molding a two-color product.

[0037] See also Figures 3 to 5 The slide linkage structure includes at least one slide 5 that can slide relative to the first cavity 4. The slide 5 is used to limit the one-color product to prevent the one-color product from shaking when the movable mold 25 rotates. The first core 2 is provided with an oblique push groove 6 corresponding to the slide 5. During the first mold closing, the oblique push groove 6 pushes the slide 5 to move toward the first cavity 4. After the one-color product is injection molded, the slide is pressed against and limits the one-color product to prevent the one-color product from shaking and shifting when the movable mold rotates, thereby ensuring the injection molding quality. The second core 3 is provided with a shovel 7. After the movable mold 25 drives the first cavity 4 to rotate 180 degrees, the slide 5 corresponds to the shovel 7. During the second mold closing, the shovel 7 pushes the slide 5 to slide in the direction away from the first cavity 4, so that the slide is separated from the one-color product to avoid affecting the secondary injection molding.

[0038] In some embodiments, Figures 5 to 8 As shown, the slide 5 is provided with a first oblique retaining wall 8 and a second oblique retaining wall 9, the oblique push groove 6 is provided with a first oblique push wall 10 adapted to the first oblique retaining wall 8, and the shovel 7 is provided with a second oblique push wall 11 adapted to the second oblique retaining wall 9. Through the cooperation of the oblique retaining wall and the oblique push wall, when the movable mold 25 slides relative to the fixed mold 1 (mold closing), the slide 5 can be driven to slide relative to the first cavity 4, ensuring the feasibility of the structure, and the driving is simple, and the mold space occupied is small.

[0039] In some embodiments, Figure 6 and Figure 7 As shown, the slider 5 includes a stopper head 12 and a sliding seat 13 fixed to each other, the stopper head 12 and the sliding seat 13 are integrally arranged, the stopper head 12 is used to resist and stop the same color product, the first oblique retaining wall 8 is arranged on the stopper head 12, and the second oblique retaining wall 9 is arranged in the sliding seat 13. The slider 5 is symmetrically installed with slider strips 14 on both sides, and the sliding seat 13 can be slidably installed between the two slider strips 14. An anti-wear insert 18 is installed below the slider 5, which is conducive to extending the service life.

[0040] In some embodiments, Figures 6 to 8As shown, a limiting ball 15 is installed at one end of the slider pressure strip 14 facing the sliding seat 13. The limiting ball 15 can be an elastic clamp. The side wall of the sliding seat 13 is provided with a first limiting groove 16 and a second limiting groove 17 adapted to the limiting ball 15. When the limiting ball 15 is placed in the second limiting groove 17, the slider 5 extends out to limit the product of one color; when the limiting ball 15 is placed in the first limiting groove 16, the slider 5 retracts and leaves the product of one color. The limiting groove is used to limit the movement of the slider 5 and ensure the reliability of the structure.

[0041] In some embodiments, Figure 6 As shown, there are two slides 5, one of which is slidably mounted on the first cavity 4, and the other is slidably mounted on the movable mold 25, and the two slides 5 are respectively located at both ends of the first cavity 4. The use of two slides 5 and being located at both ends of the first cavity 4 has a better limiting effect and a better effect of preventing shaking.

[0042] In some embodiments, Figure 3 As shown, the movable mold 25 is also provided with a second cavity 19, which is centrally symmetrically arranged with the first cavity 4, and a sliding linkage structure is provided on the second cavity 19, and the second cavity 19 has the same structure as the first cavity 4. With two cavities, when the first cavity 4 rotates to the second core for two-color injection molding, the second cavity 19 can simultaneously rotate to the first core for one-color injection molding, and both sides can be injected at the same time, with high injection efficiency.

[0043] In some embodiments, Figure 1 and Figure 2 As shown, a top plate 20 is fixed on the fixed mold 1 , and a first nozzle 21 and a second nozzle 22 are arranged on the top plate 20 at intervals. The first nozzle 21 is used to inject a single color plastic into the first core 2 , and the second nozzle 22 is used to inject a two-color plastic into the second core 3 .

[0044] In some embodiments, Figure 1 and Figure 2 As shown, a connecting seat 23 is installed between the ejector plate 20 and the fixed mold 1, an ejector plate 24 is slidably installed on the connecting seat 23, a plurality of ejectors are installed on the ejector plate 24, the ejector plate 24 is driven by a cylinder, one end of the ejector passes through the fixed mold 1 and the second core 3, and is used to eject the two-color product.

[0045] The use process of this rotary two-color injection mold is as follows:

[0046] During the first mold closing, the oblique push groove 6 pushes the slide 5 to move toward the first cavity 4, the limit head 12 of the slide 5 extends out, the first cavity 4 and the first core 2 are molded, and a single-color plastic is injected from the first nozzle 21. After the single-color product is formed, the limit head 12 of the slide 5 is pressed against the single-color product for limit. Then, the injection molding machine drives the movable mold 25 to open the mold, and the single-color product remains on the first cavity 4. Then, the injection molding machine drives the movable mold 25 to rotate 180 degrees, and the first cavity 4 corresponds to the second core 3. Due to the limit of the slide 5, the single-color product will not shift during the rotation process, thereby ensuring the injection molding quality.

[0047] During the secondary mold closing, the shovel machine 7 pushes the slide 5 to slide away from the first cavity 4, and the limit head 12 retracts, so that the slide is separated from the one-color product; then, the two-color plastic is injected from the second nozzle 22, and the mold is opened after the two-color product is formed. The two-color product remains on the second core 3, and finally the ejector plate 24 drives the ejector to eject the product.

[0048] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0049] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A rotary two-color injection mold, characterized in that: include: A fixed mold (1) on which a first core (2) and a second core (3) are arranged at intervals; The movable mold (25) can slide and rotate relative to the fixed mold (1), and is provided with a first mold cavity (4); the first mold cavity (4) can be molded together with the first mold core (2) to form a single-color product, and the first mold cavity (4) can be molded together with the second mold core (3) to form a two-color product after rotating; The slide linkage structure comprises at least one slide (5) which can slide relative to the first cavity (4), and the slide (5) is used to limit the single-color product to prevent the movable mold (25) from shaking when the movable mold (25) rotates; the first core (2) is provided with an inclined push groove (6) corresponding to the slide (5), and when the mold is closed once, the inclined push groove (6) pushes the slide (5) to move toward the first cavity (4); the second core (3) is provided with a shovel (7), and after the first cavity (4) rotates, the slide (5) corresponds to the shovel (7), and when the mold is closed twice, the shovel (7) pushes the slide (5) to slide in a direction away from the first cavity (4).

2. The rotary two-color injection mold according to claim 1, characterized in that: The slide (5) is provided with a first oblique retaining wall (8) and a second oblique retaining wall (9), the oblique push groove (6) is provided with a first oblique push wall (10) adapted to the first oblique retaining wall (8), and the shovel (7) is provided with a second oblique push wall (11) adapted to the second oblique retaining wall (9).

3. The rotary two-color injection mold according to claim 2, characterized in that: The slide (5) comprises a limit head (12) and a sliding seat (13) fixed to each other, the limit head (12) is used to resist and limit the single-color product, the first oblique blocking wall (8) is arranged on the limit head (12), and the second oblique blocking wall (9) is arranged in the sliding seat (13).

4. The rotary two-color injection mold according to claim 3, characterized in that: The two sides of the slide (5) are symmetrically mounted with slide strips (14), and the sliding seat (13) can be slidably mounted between the two slide strips (14).

5. The rotary two-color injection mold according to claim 4, characterized in that: A limiting ball (15) is installed on one end of the positioning strip (14) facing the sliding seat (13), and a first limiting groove (16) and a second limiting groove (17) adapted to the limiting ball (15) are arranged at intervals on the side wall of the sliding seat (13).

6. The rotary two-color injection mold according to claim 1, characterized in that: An anti-wear insert (18) is installed below the slide (5).

7. The rotary two-color injection mold according to claim 1, characterized in that: There are two slides (5), one of which is slidably mounted on the first cavity (4), and the other is slidably mounted on the movable mold (25), and the two slides (5) are respectively located at two ends of the first cavity (4).

8. The rotary two-color injection mold according to claim 1, characterized in that: The movable mold (25) is also provided with a second mold cavity (19), the second mold cavity (19) and the first mold cavity (4) are centrally symmetrically arranged, and the second mold cavity (19) is provided with the sliding linkage structure.

9. The rotary two-color injection mold according to claim 1, characterized in that: A top plate (20) is fixed on the fixed mold (1), and a first nozzle (21) and a second nozzle (22) are arranged on the top plate (20) at intervals, the first nozzle (21) being used for injecting a single-color plastic into the first core (2), and the second nozzle (22) being used for injecting a two-color plastic into the second core (3).

10. The rotary two-color injection mold according to claim 9, characterized in that: A connecting seat (23) is installed between the ejector plate (20) and the fixed mold (1), an ejector plate (24) is slidably installed on the connecting seat (23), a plurality of ejectors are installed on the ejector plate (24), one end of each ejector passes through the fixed mold (1) and the second core (3) for ejecting the two-color product.

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