Double-color forming mechanism

Abstract

The double-color forming mechanism comprises an injection molding machine rotating plate, a first panel, a second panel, a first fixed mold plate and a second fixed mold plate, the two sides of the injection molding machine rotating plate are each provided with a hot runner plate, a bottom plate is fixed to the hot runner plates, a movable mold plate is arranged on the bottom plate, and a movable mold core is installed in the middle of the movable mold plate; a hot runner channel is arranged between the hot runner plate and the bottom plate, a first fixed mold core is mounted in the middle of the first fixed mold plate, a cold runner channel is arranged in the first fixed mold core, a second fixed mold core is mounted in the middle of the second fixed mold plate, and the movable mold plate is matched with the first fixed mold plate or the second fixed mold plate for molding. According to the double-color forming mechanism, secondary injection molding is conducted on a double-color product, injection molding is matched at different fixed mold positions, so that the two-end injection molding machining technology forms a flow-line-type circulating action, and the product has the double-color forming capacity and effect while the single-color structure is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of molds, and in particular to a two-color molding mechanism. Background Art

[0002] Conventional injection molds are single-color molding, and one-time injection molding is sufficient. If the product requires two colors, two injection ports are set in the fixed mold part, and different colored materials are injected at the two injection ports respectively. For example, if the body of the product is transparent and the accessories are white, the first shot is transparent material and the second shot is white material. Both can only be injected in the fixed mold part. However, for some special products, if the injection ports are all injected in the fixed mold part, the product appearance quality will be low and the size will also be affected. Summary of the invention

[0003] One object of the present invention is to provide a two-color molding mechanism, which can form a flow-type processing for two-color production while ensuring the appearance and size of the product, thereby improving the quality of the product.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A two-color molding mechanism comprises an injection molding machine rotating plate, a first panel, a second panel, a first fixed mold plate and a second fixed mold plate, a hot runner plate is arranged on both sides of the injection molding machine rotating plate, a bottom plate is fixed on the hot runner plate, a movable mold plate is arranged on the bottom plate, a movable mold core is installed in the middle of the movable mold plate, a hot runner channel is arranged between the hot runner plate and the bottom plate, one end of the hot runner channel is communicated with the outside of the hot runner plate, and the other end of the hot runner channel vertically passes through the movable mold plate and the movable mold core, the first fixed mold plate is fixed on the first panel, a first fixed mold core is installed in the middle of the first fixed mold plate, a cold runner channel is arranged in the first fixed mold core, one end of the cold runner channel passes through the first fixed mold plate and the first panel, and the other end of the cold runner channel passes through the first fixed mold core, the second fixed mold plate is fixed on the second panel, a second fixed mold core is installed in the middle of the second fixed mold plate, and the movable mold plate cooperates with the first fixed mold plate or the second fixed mold plate for molding.

[0006] As a preferred technical solution, a first nozzle plate is arranged between the first panel and the first fixed mold plate, and a second nozzle plate is arranged between the second panel and the second fixed mold plate.

[0007] As a preferred technical solution, a fixed mold insert is provided on a side of the first fixed mold core away from the first fixed mold plate, and a movable mold insert is provided on a side of the movable mold core away from the movable mold plate.

[0008] As a preferred technical solution, square irons are provided on both sides of the bottom plate, and the square irons are fixedly connected to the movable template.

[0009] As a preferred technical solution, a ejector plate is installed in the middle of the bottom plate.

[0010] As a preferred technical solution, a hot runner panel is connected between the hot runner plate and the injection molding machine rotating plate.

[0011] The beneficial effects of the present invention are as follows: a two-color molding mechanism is provided, which performs secondary injection molding on two-color products. By coordinating injection molding at different fixed mold positions, the injection molding process at both ends forms a flow-type circulation action. While ensuring the single-color structure, the product has the ability and effect of two-color molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0013] Figure 1 It is a schematic diagram of the overall structure of a two-color molding mechanism described in an embodiment;

[0014] Figure 2 An exploded view of a two-color molding mechanism described in an embodiment.

[0015] Figure 1 to Figure 2 middle:

[0016] 1. Injection molding machine rotating plate; 2. First panel; 3. Second panel; 4. First fixed mold plate; 5. Second fixed mold plate; 6. Hot runner plate; 7. Bottom plate; 8. Moving mold plate; 9. Moving mold core; 10. Hot runner channel; 11. First fixed mold core; 12. Cold runner channel; 13. Second fixed mold core; 14. First sprue plate; 15. Second sprue plate; 16. Fixed mold insert; 17. Moving mold insert; 18. Square iron; 19. Ejector plate; 20. Hot runner panel. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0018] like Figure 1 to Figure 2As shown, in this embodiment, a two-color molding mechanism includes an injection molding machine rotating plate 1, a first panel 2, a second panel 3, a first fixed mold plate 4 and a second fixed mold plate 5. A hot runner plate 6 is arranged on both sides of the injection molding machine rotating plate 1. A bottom plate 7 is fixed on the hot runner plate 6. A movable mold plate 8 is arranged on the bottom plate 7. A movable mold core 9 is installed in the middle of the movable mold plate 8. A hot runner channel 10 is arranged between the hot runner plate 6 and the bottom plate 7. One end of the hot runner channel 10 is communicated with the outside of the hot runner plate 6, and the other end of the hot runner channel 10 is vertically connected to the outside of the hot runner plate 6. The first fixed mold plate 4 is fixed on the first panel 2, and the first fixed mold core 11 is installed in the middle of the first fixed mold plate 4. A cold runner channel 12 is arranged in the first fixed mold core 11. One end of the cold runner channel 12 passes through the first fixed mold plate 4 and the first panel 2, and the other end of the cold runner channel 12 passes through the first fixed mold core 11. The second fixed mold plate 5 is fixed on the second panel 3, and the second fixed mold core 13 is installed in the middle of the second fixed mold plate 5. The movable mold plate 8 cooperates with the first fixed mold plate 4 or the second fixed mold plate 5 for forming.

[0019] The rotating plate 1 of the injection molding machine is mounted on the rotating structure of the injection molding machine. During the first injection process, the first fixed mold plate 4 on the first panel 2 is molded with the movable mold plate 8 on one side, and the glue is injected into the cold runner channel 12 in a fine-water point to form a transparent product. Then, the first fixed mold plate 4 is demoulded with the movable mold plate 8, and the movable mold plate 8 drives the molded transparent product to the bottom of the second fixed mold plate 5. The second fixed mold plate 5 is molded with the current movable mold plate 8, and then the hot nozzle of the hot runner channel 10 is injected with glue to form a white part on the basis of the original transparent product. During the closing process of the movable platen 8, the first fixed platen 4 is simultaneously closed with the movable platen 8 on the other side, and the first step of transparent product injection is repeated. The two sides of the rotating plate 1 of the injection molding machine are synchronously injected to form a flow production, one side performs the first shot, and the other side performs the second shot. After rotating 180 degrees and swapping the positions, in the closing position of the first fixed platen 4 and the movable platen 8, the ejector pin ejects the finished product, which is taken away by the robot, and then the transparent first shot is processed, and the above-mentioned processing technology is repeated: the product is taken at the first shot position and the first shot transparent molding is performed, and the second shot white molding is performed at the second shot position.

[0020] In a more specific structure, a first sprue plate 14 is arranged between the first panel 2 and the first fixed mold plate 4, a second sprue plate 15 is arranged between the second panel 3 and the second fixed mold plate 5, a fixed mold insert 16 is arranged on the side of the first fixed mold core 11 away from the first fixed mold plate 4, a movable mold insert 17 is arranged on the side of the movable mold core 9 away from the movable mold plate 8, square irons 18 are arranged on both sides of the bottom plate 7, the square irons 18 are fixedly connected to the movable mold plate 8, a pin plate 19 is installed in the middle of the bottom plate 7, and a hot runner panel 20 is connected between the hot runner plate 6 and the rotating plate 1 of the injection molding machine.

[0021] This design mechanism ensures the appearance requirements of two-color products. The glue injection in the moving mold part can ensure the size requirements of the product. The use of two-color molding increases the waterproof function of the product and reduces the secondary processing costs of the product in the two sets of mechanisms (the existing hot melt process will be used to combine the two color parts together, but the mechanism in this application does not require it). The two-color product is directly molded in this mechanism.

[0022] It should be stated that the above-mentioned specific implementation methods are only preferred embodiments of the present invention and the technical principles used. Within the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by technicians familiar with this technical field should be included in the protection scope of the present invention.

Claims

1. A two-color molding mechanism, characterized in that: The invention comprises an injection molding machine rotating plate, a first panel, a second panel, a first fixed mold plate and a second fixed mold plate, wherein a hot runner plate is respectively arranged on both sides of the injection molding machine rotating plate, a bottom plate is fixed on the hot runner plate, a movable mold plate is arranged on the bottom plate, a movable mold core is installed in the middle of the movable mold plate, a hot runner channel is arranged between the hot runner plate and the bottom plate, one end of the hot runner channel is communicated with the outside of the hot runner plate, and the other end of the hot runner channel vertically passes through the movable mold plate and the movable mold core upward, the first fixed mold plate is fixed on the first panel, a first fixed mold core is installed in the middle of the first fixed mold plate, a cold runner channel is arranged in the first fixed mold core, one end of the cold runner channel passes through the first fixed mold plate and the first panel, and the other end of the cold runner channel passes through the first fixed mold core, the second fixed mold plate is fixed on the second panel, a second fixed mold core is installed in the middle of the second fixed mold plate, and the movable mold plate cooperates with the first fixed mold plate or the second fixed mold plate for molding.

2. A two-color molding mechanism according to claim 1, characterized in that: A first nozzle plate is arranged between the first panel and the first fixed template, and a second nozzle plate is arranged between the second panel and the second fixed template.

3. A two-color molding mechanism according to claim 1, characterized in that: A fixed mold insert is provided on a side of the first fixed mold core away from the first fixed mold plate, and a movable mold insert is provided on a side of the movable mold core away from the movable mold plate.

4. A two-color molding mechanism according to claim 1, characterized in that: Square irons are arranged on both sides of the bottom plate, and the square irons are fixedly connected to the movable template.

5. A two-color molding mechanism according to claim 1, characterized in that: A ejector plate is installed in the middle of the bottom plate.

6. A two-color molding mechanism according to claim 1, characterized in that: A hot runner panel is connected between the hot runner plate and the injection molding machine rotating plate.

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