Mold structure for controlling double-shot molding in mold

Abstract

The utility model discloses a mold structure for controlling double-color injection molding in a mold, which relates to the technical field of molds, and comprises an insulating plate, a top plate, a manifold plate, a disc a, a disc b, a support plate, blank plates and a bottom plate which are sequentially arranged from top to bottom, an ejector plate is arranged between the blank plates, one side of the ejector plate is connected with an ejector plate fixing plate, and the mold structure also comprises two sets of mold cores, wherein the mold core arranged at the bottom plate is the rear mold core, and the mold core arranged at the top plate is the front mold core. According to the utility model, two sets of oil cylinders are respectively arranged at the glue inlet positions of the respective cavities of the rear mold core and the front mold core, and the communication state of the respective cavities of the rear mold core and the front mold core is controlled through the stretching and retracting of the oil cylinders during use, so that products without the combination of two colors can be conveniently produced; and the arrangement of the device does not need the process of opening the mold and rotating the rear mold when injection molding of different colors is produced in the prior art, so that the whole injection molding period is greatly shortened, a turntable does not need to be mounted on an injection molding machine table, and the use effect is better.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically a mold structure for in-mold controlled two-color injection molding. Background Technology

[0002] Two-color injection molding refers to the molding process of injecting two different materials into the same mold, thereby creating parts formed from two different materials. Sometimes the two materials are different colors, and sometimes they have different hardness, thus improving the product's aesthetics and assembly performance.

[0003] A two-color injection mold core structure and a two-color injection mold are proposed in Chinese patent application number CN202210857072.2. By setting up inclined guide pillars, a first slider, a first bent pin and cavity inserts, the cavity conversion in the mold can be completed during the mold opening process without the need for a separate hydraulic cylinder drive mechanism, which reduces the mold manufacturing cost, shortens the two-color injection molding time cycle and improves the injection processing efficiency of the mold.

[0004] However, existing technologies for producing two-color products require a mold opening and rotation process when using injection molding, which significantly lengthens the injection molding cycle and necessitates the installation of a turntable on the injection molding machine, thus reducing work efficiency. Therefore, this utility model proposes a mold structure for in-mold controlled two-color injection molding. Utility Model Content

[0005] Technical problems to be solved

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a mold structure for in-mold controlled two-color injection molding.

[0007] Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a mold structure for in-mold controlled two-color injection molding, comprising, from top to bottom, an insulating plate, a top plate, a manifold plate, an A-plate, a B-plate, a support plate, a spacer plate, and a bottom plate. An ejector plate is disposed between the spacer plates, and an ejector plate fixing plate is connected to one side of the ejector plate. It also includes two sets of mold cores, with the rear mold core located on the bottom plate and the front mold core located on the top plate. The rear mold core adopts an inlay structure, and its injection method uses a hot runner system with a needle valve. The front mold core… The device employs a pin-point hot runner system. Two sets of hydraulic cylinders are installed at the injection points of each cavity in both the rear and front mold cores. During operation, the extension and retraction of these cylinders control the connection between the cavities of the rear and front mold cores, facilitating the production of products with different color combinations. Furthermore, this device eliminates the need for the existing process of opening and rotating the rear mold when producing different colors, significantly shortening the entire injection molding cycle. The injection molding machine also eliminates the need for a turntable, resulting in better performance.

[0009] Preferably, the extension and retraction of the hydraulic cylinder is used to control the communication state of the respective cavities of the rear mold core and the front mold core.

[0010] Preferably, the insulating plate, top plate, manifold plate, and disk a form the front mold.

[0011] Preferably, the b disk, support plate, space plate, and base plate constitute the rear membrane.

[0012] Preferably, the front mold and the rear mold are connected by guide posts.

[0013] Preferably, the needle valve hot runner of the rear mold core is connected to the first injection nozzle.

[0014] Preferably, the pin-type hot runner of the front mold core is connected to the second injection nozzle.

[0015] Beneficial effects:

[0016] Compared with existing technologies, this in-mold controlled two-color injection molding mold structure has the following advantages:

[0017] This utility model has two mold core structures: a rear mold core and a front mold core. Each cavity of the rear mold core and the front mold core is equipped with two sets of hydraulic cylinders. During use, the extension and retraction of the hydraulic cylinders controls the connection state of the cavities of the rear mold core and the front mold core, thus facilitating the production of products with different color combinations. Furthermore, this device eliminates the need for the existing process of opening and rotating the rear mold when producing injection molding of different colors, greatly shortening the entire injection molding cycle. The injection molding machine also does not need to be equipped with a turntable, resulting in better performance. Attached Figure Description

[0018] 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.

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the hydraulic cylinder of this utility model;

[0022] Figure 4 This is a schematic diagram of the separate structure of the front mold and the rear mold of this utility model.

[0023] In the picture:

[0024] 1. Insulating plate; 2. Top plate; 3. Manifold plate; 4. A plate; 5. B plate; 6. Support plate; 7. Opening plate; 8. Bottom plate; 9. Ejector plate; 10. Ejector plate fixing plate; 11. Rear mold core; 12. Front mold core; 13. Hydraulic cylinder; 14. Guide pillar; 15. First injection nozzle; 16. Second injection nozzle. Detailed Implementation

[0025] 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.

[0026] Please see Figures 1-4As shown, this utility model provides a technical solution: a mold structure for in-mold controlled two-color injection molding, including, from top to bottom, an insulating plate 1, a top plate 2, a manifold plate 3, an a disk 4, a b disk 5, a support plate 6, a spacer plate 7, and a bottom plate 8. An ejector plate 9 is disposed between the spacer plates 7, and an ejector plate fixing plate 10 is connected to one side of the ejector plate 9. It also includes two sets of mold cores, with the rear mold core 11 located on the bottom plate 8 and the front mold core 12 located on the top plate 2. The rear mold core 11 adopts an inlay structure, and its injection method uses a hot runner system with a needle valve. The front mold core 12 adopts... Using a pin-point hot runner system, two sets of hydraulic cylinders 13 are installed at the injection points of the respective cavities of the rear mold core 11 and the front mold core 12. During use, the extension and retraction of the hydraulic cylinders 13 controls the connection state of the respective cavities of the rear mold core 11 and the front mold core 12, thus facilitating the production of products with different color combinations. Furthermore, this device eliminates the need for the existing process of opening and rotating the rear mold when producing injection molding of different colors, greatly shortening the entire injection molding cycle. The injection molding machine also does not need to be equipped with a turntable, resulting in better performance.

[0027] Please refer to the following carefully. Figure 3 The extension and retraction of the hydraulic cylinder 13 is used to control the connection state of the respective cavities of the rear mold core 11 and the front mold core 12.

[0028] Please refer to the following carefully. Figure 4 The front mold consists of insulating plate 1, top plate 2, manifold plate 3 and a disk 4, while the rear mold consists of b disk 5, support plate 6, open space plate 7 and bottom plate 8. The front mold and the rear mold are connected by guide post 14.

[0029] Please refer to the following carefully. Figure 2 The needle valve hot runner of the rear mold core 11 is connected to the first hot runner nozzle 15, and the needle point hot runner of the front mold core 12 is connected to the second hot runner nozzle 16.

[0030] Working principle: Two sets of hydraulic cylinders 13 are installed at the injection positions of the respective cavities of the rear mold core 11 and the front mold core 12. During use, the extension and retraction of the hydraulic cylinders 13 controls the connection state of the respective cavities of the rear mold core 11 and the front mold core 12, thereby facilitating the production of products with different color combinations. Moreover, the installation of this device eliminates the need for the process of opening and rotating the rear mold when producing injection molding of different colors, which is required by existing technology. This greatly shortens the entire injection molding cycle, and the injection molding machine does not need to be equipped with a turntable, resulting in better performance.

[0031] 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.

[0032] 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 mold structure for in-mold controlled two-color injection molding, comprising, from top to bottom, an insulating plate (1), a top plate (2), a manifold plate (3), an a disk (4), a b disk (5), a support plate (6), a spacer plate (7), and a bottom plate (8), wherein an ejector plate (9) is disposed between the spacer plates (7), and an ejector plate fixing plate (10) is connected to one side of the ejector plate (9), characterized in that: It also includes two sets of mold cores, of which the rear mold core (11) is set on the bottom plate (8) and the front mold core (12) is set on the top plate (2). The rear mold core (11) adopts an inlay structure and the glue injection method of the rear mold core (11) adopts a hot runner and a needle valve hot runner. The front mold core (12) adopts a needle point hot runner. Two sets of hydraulic cylinders (13) are installed at the glue injection positions of the respective cavities of the rear mold core (11) and the front mold core (12).

2. The mold structure for in-mold controlled two-color injection molding according to claim 1, characterized in that: The extension and retraction of the hydraulic cylinder (13) is used to control the connection state of the respective cavities of the rear mold core (11) and the front mold core (12).

3. The mold structure for in-mold controlled two-color injection molding according to claim 1, characterized in that: The insulating plate (1), top plate (2), manifold plate (3) and a disk (4) form the front mold.

4. The mold structure for in-mold controlled two-color injection molding according to claim 1, characterized in that: The b disk (5), support plate (6), space plate (7) and base plate (8) form the rear membrane.

5. The mold structure for in-mold controlled two-color injection molding according to claim 1, characterized in that: The front mold and the rear mold are connected by guide pillars (14).

6. The mold structure for in-mold controlled two-color injection molding according to claim 1, characterized in that: The needle valve hot runner of the rear mold core (11) is connected to the first hot runner nozzle (15).

7. The mold structure for in-mold controlled two-color injection molding according to claim 1, characterized in that: The pin-type hot runner of the front mold core (12) is connected to the second hot runner nozzle (16).

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