Double-color injection mold

Abstract

The utility model discloses a double-color injection mold. The double-color injection mold comprises a rear mold base and a front mold base, the rear mold base and the front mold base are oppositely arranged, positioning guide columns are arranged on the opposite surfaces of the front mold base and the rear mold base, the positioning guide columns are in sliding connection with the rear mold base, and the opposite surfaces of the rear mold base and the front mold base are rotationally connected with a rotating disc. According to the utility model, the rear mold is driven to rotate and change positions through power generated during mold opening, when in use and during mold opening, the front mold seat and the rear mold seat are far away from each other, the toothed bar drives the gear to rotate at the moment, the gear drives the worm to rotate in one direction through the one-way bearing, and the worm drives the rotating disc to rotate by 180 degrees through the worm gear; therefore, the position exchange of the first rear mold and the second rear mold is realized, then during mold closing, due to the arrangement of the one-way bearing, the rotating disc is fixed, mold closing double-color injection molding is completed, the structure is simpler, external power is not needed, the maintenance cost is reduced, and the occupied space is small.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely relates to a two -color injection mold. BACKGROUND

[0002] With the development of economy, the progress of society, energy conservation has become inevitable and social consensus. Various equipment is more and more towards the development of saving operation cost, convenient to use, energy saving etc. Mould as important factor in industrial production, its application in various fields are very extensive, the improvement of mould technology has far-reaching influence on saving resources and reducing cost in various trades.

[0003] With the popularization of various application scenarios, the double-color injection product is matched with the main push rod with rotating function of the special double-shot injection molding machine. After the first injection is completed, the rotating part in the double-color mold carries the product completed by injection and is pushed out by the push rod, and rotates 180 degrees, rotates the product to the second color cavity, and then completes the second injection. At this time, the first color and the second color cavity complete the corresponding injection. After the mold is opened, the hydraulic cylinder drives the push plate to push out the product completed by twice injection, and the rotating push rod of the injection molding machine rotates the mold rotating part again 180 degrees. This reciprocating operation completes the injection of the double-color product.

[0004] The rear mold rotation in the prior art is driven by motor or hydraulic pressure, needs to rely on external power, and at the same time increases the specific gravity of the mold, and the maintenance cost is high.

[0005] Therefore, how to provide a two-color injection mold to solve the problems existing in the prior art is of great significance to its application. UTILITY MODEL CONTENTS

[0006] Therefore, how to provide a two-color injection mold to solve the problems existing in the prior art is of great significance to its application.

[0007] To achieve the above object, the utility model provides the following technical scheme:

[0008] A two-color injection mold, comprising a rear mold base and a front mold base.

[0009] The rear die seat is opposite to the front die seat, positioning guide columns are arranged on opposite surfaces of the front die seat and the rear die seat, the positioning guide columns are slidably connected with the rear die seat, rotating discs are rotatably connected with the opposite surfaces of the front die seat and the rear die seat, first rear dies and second rear dies are mounted on the rotating discs opposite to the front die seat, a front die is mounted on the opposite surfaces of the front die seat and the rear die seat, two injection cavities are arranged on the side surface of the front die, the two injection cavities correspond to the first rear dies and the second rear dies respectively, and injection holes are formed in the back surface of the front die seat and communicated with the two injection cavities respectively.

[0010] Preferably, a gear rod is fixedly connected with the side surface of the front die seat, and a gear wheel is rotatably connected with the side surface of the rear die seat.

[0011] Preferably, a cylindrical cavity is formed in the bottom end of the rear die seat, an annular cavity is formed in the middle of the rear die seat, the rotating disc is rotatably connected with the rear die seat through a rotating column, the rotating disc is located in the annular cavity, and the cylindrical cavity is connected with the annular cavity.

[0012] Preferably, a worm wheel is mounted on the edge side of the rotating disc, a worm is rotatably connected in the cylindrical cavity, the worm is meshingly connected with the worm wheel, and the worm is drivingly connected with the gear wheel through a one-way bearing.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The utility model discloses a power generated when opening the mould is used to drive the rear die to rotate and change position, when opening the mould, the front die seat and the rear die seat are away from each other, the gear rod drives the gear wheel to rotate, the gear wheel drives the worm to rotate through the one-way bearing, the worm drives the rotating disc to rotate 180 degrees through the worm wheel, thereby realizing the position exchange of the first rear die and the second rear die, then when closing the mould, the rotating disc does not move because of the one-way bearing, the double -color injection molding of closing the mould is completed, the structure is simpler, does not need external power, the maintenance cost is reduced, and the space possession is small.

[0015] The above description is only a summary of the technical scheme of the application, in order to more clearly understand the technical means of the application, so as to be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following will be described in detail with the preferred embodiments of the application and the accompanying drawings.

[0016] According to the detailed description of the specific embodiments of the application in the following text combined with the drawings, those skilled in the art will understand the above and other purposes, advantages and characteristics of the application more clearly. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without any creative effort. In all the drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, the elements or parts are not necessarily drawn according to the actual proportions.

[0018] Fig. 1 The structural schematic diagram of the present application is shown in the figure.

[0019] Fig. 2 The sectional view of the rear die holder in the present application is shown in the figure.

[0020] In the figure: 1, rear die holder; 2, first rear die; 3, rotating disc; 4, positioning guide column; 5, front die holder; 6, injection hole; 7, front die; 8, toothed rod; 9, one-way bearing; 10, gear; 11, second rear die; 12, worm wheel; 13, worm. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. In the following description, the specific details such as specific configurations and components are provided only to help the comprehensive understanding of the embodiments of the present application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the described embodiments without departing from the scope and spirit of the present application. In addition, in order to be clear and concise, the description of known functions and structures is omitted in the embodiments.

[0022] In addition, the reference numerals and / or letters can be repeated in different examples in the present application. Such repetition is for the purpose of simplification and clarity, and does not itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0023] The term "and / or" in this paper is only to describe the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which means that there are three cases of A alone, B alone and A and B together. The term "and" in this paper is to describe another association relationship of the associated objects, which means that there can be two kinds of relationships, for example, A and B, which means that there are two cases of A alone and A and B together. In addition, the character " / " in this paper generally represents an "or" relationship between the associated objects before and after it.

[0024] It should also be noted that, in this document, the terms such as first and second are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between such entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion.

[0025] Please refer to Figs. 1-2 The present application provides a technical scheme of a two-color injection mold: comprising a rear mold base 1 and a front mold base 5;

[0026] The rear mold base 1 is arranged opposite to the front mold base 5, and the opposite surface of the front mold base 5 and the rear mold base 1 is provided with a positioning guide column 4, the positioning guide column 4 is in sliding connection with the rear mold base 1, and the opposite surface of the rear mold base 1 and the front mold base 5 is rotatably connected with a rotating disc 3, the rotating disc 3 is installed with a first rear mold 2 and a second rear mold 11 on the opposite surface of the front mold base 5, the opposite surface of the front mold base 5 and the rear mold base 1 is installed with a front mold 7, and the side surface of the front mold 7 is provided with two injection cavities, the two injection cavities correspond to the first rear mold 2 and the second rear mold 11 respectively, and the back surface of the front mold base 5 is provided with two injection holes 6, and the two injection holes 6 are in communication with the two injection cavities respectively.

[0027] When the mold is closed during metal two-color injection molding, the two injection cavities are connected with the first rear mold 2 and the second rear mold 11, and injection is carried out through the two injection holes 6 into the two injection cavities, at this time the first rear mold 2 carries out single-color injection, then the mold is opened, the first rear mold 2 and the second rear mold 11 are interchanged, and the second color injection is carried out on the single-color injection semi-finished product.

[0028] The side surface of the front mold base 5 is fixedly connected with a toothed rod 8, and the side surface of the rear mold base 1 is rotatably connected with a gear wheel 10, and the gear wheel 10 is in meshing connection with the toothed rod 8.

[0029] A cylindrical cavity is formed in the inner bottom end of the rear mold base 1, an annular cavity is formed in the middle part of the rear mold base 1, the middle part of the rotating disc 3 is rotatably connected with the rear mold base 1 through a rotating column, the rotating disc 3 is located inside the annular cavity, and the cylindrical cavity is connected with the annular cavity.

[0030] A worm wheel 12 is installed on the side of the rotating disc 3, a worm 13 is rotatably connected inside the cylindrical cavity, the worm 13 is in meshing connection with the worm wheel 12, and one end of the worm 13 and the gear wheel 10 are in transmission connection through a one-way bearing 9

[0031] In particular, when the mold is opened, the rear mold base 1 and the front mold base 5 are away from each other, at this time, the gear 10 is rotated by the gear bar 8, the worm 13 is rotated by the gear 10 through the one-way bearing 9, the rotating disc 3 is rotated 180 degrees by the worm 13 through the worm wheel 12, so that the positions of the first rear mold 2 and the second rear mold 11 are exchanged, then when the mold is closed, the rotating disc 3 is not moved because of the one-way bearing 9, the double-color injection molding is completed, the structure is simpler, external power is not needed, the maintenance cost is reduced, and the space occupation is small.

[0032] The above merely describes preferred embodiments of the present application, and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application can be variously changed and modified. Any change, modification, replacement, integration and parameter change of the embodiments within the spirit and principle of the present application, which can realize the same function without departing from the principle and spirit of the present application, falls within the protection scope of the present application.

Claims

1. A two-color injection mold, characterized in that: It includes a rear mold base (1) and a front mold base (5); The rear mold base (1) is arranged opposite to the front mold base (5). The front mold base (5) and the rear mold base (1) are provided with positioning guide posts (4). The positioning guide posts (4) are slidably connected to the rear mold base (1). The rear mold base (1) and the front mold base (5) are rotatably connected with a rotating disk (3). The rotating disk (3) and the front mold base (5) are mounted with a first rear mold (2) and a second rear mold (11). The front mold base (5) and the rear mold base (1) are mounted with a front mold (7). The side of the front mold (7) is provided with two injection cavities. The two injection cavities correspond to the first rear mold (2) and the second rear mold (11) respectively. The back of the front mold base (5) is provided with injection holes (6). The two injection holes (6) are connected to the two injection cavities respectively.

2. A two-color injection mold as described in claim 1, characterized in that: A rack (8) is fixedly connected to the side of the front mold base (5), and a gear (10) is rotatably connected to the side of the rear mold base (1). The gear (10) meshes with the rack (8).

3. A two-color injection mold as described in claim 2, characterized in that: The bottom of the rear mold base (1) is provided with a cylindrical cavity, and the middle part of the rear mold base (1) is provided with an annular cavity. The middle part of the rotating disk (3) is rotatably connected to the rear mold base (1) through a rotating column. The rotating disk (3) is located inside the annular cavity, and the cylindrical cavity is connected to the annular cavity.

4. A two-color injection mold as described in claim 3, characterized in that: A worm gear (12) is installed on the side of the rotating disk (3), and a worm (13) is rotatably connected inside the cylindrical cavity. The worm (13) meshes with the worm gear (12), and one end of the worm (13) is connected to the gear (10) through a one-way bearing (9).

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