Multicolor injection mold

Abstract

The utility model discloses a multicolor injection mold, which relates to the technical field of injection molds, and comprises a fixed mold and a movable mold, the fixed mold and the movable mold are connected through a guide structure, at least two pouring nozzles and pouring channels communicated with the pouring nozzles are arranged in the fixed mold, the fixed mold comprises a fixed mold plate and a fixed mold seat, and the fixed mold plate and the fixed mold seat are arranged on the fixed mold seat. The fixed mold comprises a fixed mold plate and a fixed mold base, a fixed column is arranged between the fixed mold plate and the fixed mold base, the fixed mold plate and the fixed mold base are connected through the fixed column, the movable mold comprises a movable mold plate, an ejector pin is inserted into the movable mold plate, and a push plate is fixedly connected to one side of the ejector pin. The at least two pouring nozzles and the pouring channels communicated with the pouring nozzles are used for multi-color mold injection molding, the fixed mold and the movable mold can be driven to be opened through the driving mechanism, in the mold opening process, the fixed mold base can abut against the push plate so as to push the ejector pin to eject out a workpiece, the mold stripping efficiency is high, and the production cost is low. The push plate can be reset under the action of the tension spring during mold closing, the structural design is reasonable, and the use is convenient and fast.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically a multi-color injection mold. Background Technology

[0002] Injection molding is a method of shaping industrial products. Products are typically made using rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding compression molding and die casting. An injection molding machine (or simply injection molding machine) is the main molding equipment used to make various shapes of plastic products from thermoplastic or thermosetting materials using plastic molds. Injection molding is achieved through an injection molding machine and molds.

[0003] A utility model patent with Chinese patent publication number CN218399147U discloses a multi-color injection molding device. This device involves injecting molding material into two sets of injection modules after they are pressed together. Since most injection materials are toxic and can harm the human body, a threaded injection tube is incorporated. During injection, a slider slides inside a slide rail, aligning the threaded injection tube with the injection port on the injection module. Rotating a rotating disc causes the threaded injection tube to rotate within the slider's thread. Inserted inside the injection port, the material is injected, ensuring worker safety. After the plastic injection is complete, it needs to be removed from the injection module. To simplify the removal process and prevent damage to the plastic part during removal, a rocker arm is rotated to move the injection module to both sides until the circular plate contacts the fixed plate and compresses the spring. The first cylinder moves inward, pushing the locking block and the push plate out from the second slot, ejecting the completed plastic part outward. This greatly facilitates the removal of the injection molded part from the injection module 6, enabling automated production. However, research on existing technologies and the aforementioned patents revealed that during the injection molding of multi-color plastics, the molded workpiece often remains inside the injection groove of the mold, hindering its removal and reducing processing efficiency. Therefore, a multi-color injection mold is proposed here. Utility Model Content

[0004] Technical problems to be solved

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a multi-color injection mold.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a multi-color injection mold, comprising a fixed mold and a moving mold, wherein the fixed mold and the moving mold are connected by a guide structure, wherein the fixed mold is provided with at least two sprues and a gating channel communicating with the sprues, and the multi-color injection mold is provided by providing at least two sprues and a gating channel communicating with the sprues. Furthermore, the fixed mold and the moving mold can be opened by a drive mechanism. During the mold opening process, the fixed mold base can hold the push plate and push the ejector pin to eject the workpiece, resulting in high mold ejection efficiency. When the mold is closed, the push plate can be reset under the action of a tension spring. The structure is reasonably designed, convenient and quick to use, and highly practical.

[0008] The fixed mold includes a fixed template and a fixed mold base. A fixing column is provided between the fixed template and the fixed mold base. The fixed template and the fixed mold base are connected by the fixing column. The fixed template, the fixed mold base and the fixing column are a whole. The mold is fixedly installed by the fixed mold base.

[0009] The moving mold includes a moving template, and an ejector pin is inserted inside the moving template. A push plate is fixedly connected to one side of the ejector pin, and a tension spring is fixedly connected to one side of the push plate. One end of the tension spring is fixed to the fixed mold base. When the mold is closed, the push plate can be reset under the action of the tension spring to ensure that the push plate and ejector pin do not affect the injection molding of the workpiece.

[0010] A driving mechanism is provided between the moving template and the fixed template to realize the opening and closing of the fixed template and the moving template.

[0011] Preferably, the guide structure includes a guide shaft fixed to one side of the fixed mold, and the moving mold has a guide hole for inserting the fixed shaft inside.

[0012] Preferably, a second guide post is fixedly connected to one side of the push plate, and a guide hole for installing the second guide post is provided inside the moving template.

[0013] Preferably, the driving mechanism is one of a hydraulic cylinder, a pneumatic cylinder, or an electric telescopic rod.

[0014] Preferably, one end of the driving mechanism is fixedly connected to the fixed mold base, and the output end of the driving mechanism is fixedly connected to the moving mold plate.

[0015] Preferably, a forming protrusion is provided on one side of the fixed mold, and a forming cavity is provided on one side of the moving mold.

[0016] Preferably, the workpiece is formed in the forming protrusion and the forming cavity.

[0017] Beneficial effects:

[0018] Compared with existing technologies, this multi-color injection mold has the following advantages:

[0019] This utility model is used for multi-color mold injection by setting at least two sprues and a gating channel connected to the sprues. The drive mechanism of this application can drive the fixed mold and the moving mold to open. During the mold opening process, the fixed mold base can hold the push plate and push the ejector pin to push the workpiece out. The mold opening efficiency is high. When the mold is closed, the push plate can be reset under the action of the tension spring. The structure is reasonable, convenient and quick to use, and highly practical. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of this utility model.

[0025] In the picture:

[0026] 1. Fixed mold; 2. Moving mold; 3. Guide structure; 4. Sprue; 5. Gating channel; 6. Drive mechanism; 7. Molding protrusion; 8. Molding cavity; 101. Fixed mold plate; 102. Fixed mold base; 103. Fixed post; 201. Moving mold plate; 202. Ejector pin; 203. Push plate; 204. Tension spring; 301. Guide shaft; 2031. Second guide post; 2011. Guide hole two. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-4As shown, this utility model provides a technical solution: a multi-color injection mold, including a fixed mold 1 and a moving mold 2, which are connected by a guide structure 3. The fixed mold 1 is provided with at least two sprues 4 and a gating channel 5 communicating with the sprues 4. The multi-color injection mold is used by providing at least two sprues 4 and a gating channel 5 communicating with the sprues 4. In this application, the fixed mold 1 and the moving mold 2 can be opened by a drive mechanism 6. During the mold opening process, the fixed mold base 102 can hold the push plate 203 and push the ejector pin 202 to eject the workpiece. The mold opening efficiency is high. When the mold is closed, the push plate 203 can be reset under the action of the tension spring. The structure is reasonably designed, convenient and quick to use, and highly practical.

[0029] The fixed mold 1 in this application includes a fixed template 101 and a fixed mold base 102. A fixing column 103 is provided between the fixed template 101 and the fixed mold base 102. The fixed template 101 and the fixed mold base 102 are connected by the fixing column 103. The fixed template 101, the fixed mold base 102 and the fixing column 103 are a whole. The mold is fixedly installed by the fixed mold base 102.

[0030] The moving mold 2 in this application includes a moving template 201. An ejector pin 202 is inserted inside the moving template 201. A push plate 203 is fixedly connected to one side of the ejector pin 202. A tension spring 204 is fixedly connected to one side of the push plate 203. One end of the tension spring 204 is fixed to the fixed mold base 102. When the mold is closed, the push plate 203 can be reset under the action of the tension spring 204, ensuring that the push plate 203 and the ejector pin 202 do not affect the injection molding of the workpiece.

[0031] In this application, a forming protrusion 7 is provided on one side of the fixed mold 1, and a forming cavity 8 is provided on one side of the moving mold 2. The workpiece is formed in the forming protrusion 7 and the forming cavity 8.

[0032] Please refer to the following carefully. Figure 4 The guide structure 3 includes a guide shaft 301 fixed on one side of the fixed mold 1, a guide hole for inserting the fixed shaft 301 is provided inside the moving mold 2, a second guide post 2031 is fixedly connected to one side of the push plate 203, and a guide hole 2011 for installing the second guide post 2031 is provided inside the moving mold 201.

[0033] Please refer to the following carefully. Figure 1 and Figure 3 A drive mechanism 6 is provided between the moving template 201 and the fixed template 101. The drive mechanism 6 is one of a hydraulic cylinder, a pneumatic cylinder or an electric telescopic rod. One end of the drive mechanism 6 is fixedly connected to the fixed template base 102, and the output end of the drive mechanism 4 is fixedly connected to the moving template 201.

[0034] Working principle: The drive mechanism 6 of this application can drive the fixed mold 1 and the moving mold 2 to open. During the mold opening process, the fixed mold base 102 can hold the push plate 203 and push the ejector pin 202 to push the workpiece out. The mold opening efficiency is high. When the mold is closed, the push plate 203 can be reset under the action of the tension spring. The structure is reasonably designed, convenient and quick to use, and highly practical.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] 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 multi-color injection mold comprising a fixed mold (1) and a movable mold (2), characterized in that: The fixed mold (1) and the moving mold (2) are connected by a guide structure (3). The fixed mold (1) is provided with at least two sprues (4) and a pouring channel (5) communicating with the sprues (4). The fixed mold (1) includes a fixed template (101) and a fixed mold base (102), and a fixing column (103) is provided between the fixed template (101) and the fixed mold base (102), and the fixed template (101) and the fixed mold base (102) are connected by the fixing column (103); The moving mold (2) includes a moving template (201), and an ejector pin (202) is inserted inside the moving template (201). A push plate (203) is fixedly connected to one side of the ejector pin (202), and a tension spring (204) is fixedly connected to one side of the push plate (203). One end of the tension spring (204) is fixed on the fixed mold base (102). A driving mechanism (6) is provided between the moving template (201) and the fixed template (101).

2. A multi-color injection mold in accordance with claim 1, wherein: The guide structure (3) includes a guide shaft (301) fixed on one side of the fixed mold (1), and the moving mold (2) has a guide hole for inserting and fixing the guide shaft (301).

3. A multi-color injection mold in accordance with claim 1, wherein: A second guide post (2031) is fixedly connected to one side of the push plate (203), and a second guide hole (2011) for installing the second guide post (2031) is opened inside the moving template (201).

4. A multi-color injection mold in accordance with claim 1, wherein: The drive mechanism (6) is one of a hydraulic cylinder, a pneumatic cylinder, or an electric telescopic rod.

5. A multi-color injection mold in accordance with claim 1, wherein: One end of the drive mechanism (6) is fixedly connected to the fixed mold base (102), and the output end of the drive mechanism (6) is fixedly connected to the moving mold plate (201).

6. A multi-color injection mold in accordance with claim 1, wherein: The fixed mold (1) has a forming protrusion (7) on one side, and the moving mold (2) has a forming cavity (8) on one side.

7. A multi-color injection mold in accordance with claim 1, wherein: The workpiece is formed in the forming protrusion (7) and the forming cavity (8).

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