Interlayer injection mold

Abstract

The utility model provides an interlayer injection mold which comprises a front mold and a rear mold matched with the front mold, a high-pressure injection molding machine head is arranged in the front mold, one side of the high-pressure injection molding machine head is provided with a first hole and a second hole which are communicated with the interior of the high-pressure injection molding machine head, and the first hole and the second hole are respectively communicated with a first runner and a second runner. A V-shaped connecting block is arranged on the front side of the front mold, a first through cavity and a second through cavity are formed in the two ends of the V-shaped connecting block respectively, and the first runner and the second runner penetrate through corresponding holes in the front mold and penetrate through the first through cavity and the second through cavity respectively. The first flow channel and the second flow channel located on the outer side of the through cavity communicate with the first feeding bin and the second feeding bin through a first switch valve and a second switch valve correspondingly. The utility model has the beneficial effects that different raw materials are separately conveyed through the first runner and the second runner, so that the mixing of different raw materials in the conveying process is reduced, and the quality of an interlayer plastic part is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, in particular to a sandwich injection mold. Background Art

[0002] The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it eject and fill the mold cavity. At present, the sandwich injection molding process is widely used because the products obtained are beautiful and personalized. In sandwich injection molding, the inner layer material is generally injected through the runner first, and then the surface layer material is injected. In this way, the two raw materials are easily mixed during the transmission process using the same runner, which affects the layered products of the injection molded products. Utility Model Content

[0003] The utility model aims to provide a sandwich injection mold, which can separately transfer raw materials and improve the injection quality of products, and is particularly suitable for injection molding sandwich plastic products.

[0004] The technical scheme of the utility model is: a sandwich injection mold, comprising a front mold and a rear mold matched with the front mold, the rear side of the front mold is provided with an injection groove, the front side of the rear mold is provided with an injection boss matched with the injection groove, the front side of the rear mold is provided with a plurality of guide columns, a spring is provided on the outer sleeve of the guide column, the rear side of the front mold is provided with a guide groove matched with the guide column,

[0005] A high-pressure injection molding head is provided in the front mold, an injection hole is provided on the front wall of the injection molding groove, the nozzle of the high-pressure injection molding head is connected to the injection hole, a first hole and a second hole connected to the interior of the high-pressure injection molding head are provided on one side of the high-pressure injection molding head, the first hole and the second hole are respectively connected to the first flow channel and the second flow channel, a V-shaped connecting block is provided on the front side of the front mold, a first through cavity and a second through cavity are respectively provided at both ends of the V-shaped connecting block, and the outer ends of the two through cavities are connected to the outside, the first flow channel and the second flow channel both pass through the corresponding holes on the front mold, and respectively pass through the first through cavity and the second through cavity, and pass out from the outside of the through cavity, the first flow channel and the second flow channel located on the outside of the through cavity are respectively connected to the first supply bin and the second supply bin through the first switch valve and the second switch valve.

[0006] Furthermore, a clamping groove for a spring clamping column is provided on the rear side of the front mold, and the clamping groove is arranged concentrically with the guide groove.

[0007] Furthermore, a sealing cover is provided at the injection hole, a plug matching the injection hole is provided on one side of the sealing cover, and a high temperature resistant sealing gasket is provided on the other end of the plug.

[0008] Furthermore, the front mold is provided with a receiving cavity for accommodating a high-pressure injection molding machine head.

[0009] Furthermore, the first flow channel and the second flow channel are respectively provided with pumps.

[0010] Furthermore, the first switch valve and the second switch valve are electrically connected to a main control module, and the switch of the switch valve is adjusted by the main control module.

[0011] The utility model has the advantages and positive effects that: due to the adoption of the technical solution, different raw materials are separately conveyed through the first flow channel and the second flow channel, the mixing of different raw materials during the conveying process is reduced, and the quality of the sandwich plastic parts is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] In the figure:

[0014] 1. Front mold 2. Rear mold 3. Injection groove

[0015] 4. Injection boss 5. Guide column 6. Spring

[0016] 7. High-pressure injection molding head 8. First flow channel 9. Second flow channel

[0017] 10. V-shaped connection block 11. Slot 12. Guide groove DETAILED DESCRIPTION

[0018] like Figure 1 As shown, the technical solution of the utility model is a sandwich injection mold, comprising a front mold 1, and a rear mold 2 matched with the front mold 1, the rear side of the front mold 1 is provided with an injection groove 3, the front side of the rear mold 2 is provided with an injection boss 4 matched with the injection groove 3, the front side of the rear mold 2 is provided with a plurality of guide columns 5, the outer sleeve of the guide column 5 is provided with a spring 6, the rear side of the front mold 1 is provided with a guide groove 12 matched with the guide column 5,

[0019] The front mold 1 is provided with a high-pressure injection molding head 7, the front wall of the injection molding groove 3 is provided with an injection molding hole connected to the injection molding groove 3, the nozzle of the high-pressure injection molding head 7 is connected to the injection molding hole, and one side of the high-pressure injection molding head 7 is provided with a first hole and a second hole connected to the inside thereof, and the first hole and the second hole are respectively connected to the first flow channel 8 and the second flow channel 9, and a V-shaped connecting block 10 is provided on the front side of the front mold 1, and the two ends of the V-shaped connecting block 10 are respectively provided with a first through cavity and a second through cavity, and the outer ends of the two through cavities are both connected to the outside, and the first flow channel 8 and the second flow channel 9 pass through the corresponding holes on the front mold 1, and respectively penetrate the first through cavity and the second through cavity, and pass out from the outside of the through cavity, and the first flow channel 8 and the second flow channel 9 located on the outside of the through cavity are respectively connected to the first feed bin and the second feed bin through the first switch valve and the second switch valve. Two sets of independent and non-interfering flow channel systems adjust the opening and closing valve ports of the corresponding switch valves through the main control module, thereby realizing the sandwich structure of the plastic part.

[0020] In this embodiment, a clamping groove 11 for clamping the spring 6 is provided on the rear side of the front mold 1 , and the clamping groove 11 is concentrically arranged with the guide groove 12 .

[0021] In this embodiment, a sealing cover is provided at the injection hole, a plug matching the injection hole is provided on one side of the sealing cover, and a high temperature resistant sealing gasket is provided on the other end of the plug.

[0022] In this embodiment, a receiving cavity for placing the high-pressure injection molding head 7 is provided in the front mold 1, and the outer wall of the high-pressure injection molding head 7 is arranged to fit the receiving cavity, and a sealing gasket is provided therebetween.

[0023] In this embodiment, pumps are provided on the first flow channel 8 and the second flow channel 9 respectively.

[0024] In this embodiment, the first switch valve and the second switch valve are electrically connected to the main control module, and the switch of the switch valve is adjusted by the main control module.

[0025] The working process and principle of this example: when in use, the first flow channel 8 and the second flow channel 9 are connected to the first supply bin and the second supply bin respectively, and the switch of the first switch valve and the second switch valve is adjusted through the main control module so that different raw materials flow in from different channels.

[0026] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A sandwich injection mold, characterized in that: The invention comprises a front mold and a rear mold matched with the front mold, wherein the rear side of the front mold is provided with an injection molding groove, the front side of the rear mold is provided with an injection molding boss matched with the injection molding groove, the front side of the rear mold is provided with a plurality of guide columns, a spring is provided on the outer sleeve of the guide column, and the rear side of the front mold is provided with a guide groove matched with the guide column. A high-pressure injection molding head is provided in the front mold, an injection hole is provided on the front wall of the injection molding groove, the nozzle of the high-pressure injection molding head is connected to the injection hole, a first hole and a second hole connected to the interior of the high-pressure injection molding head are provided on one side of the high-pressure injection molding head, the first hole and the second hole are respectively connected to the first flow channel and the second flow channel, a V-shaped connecting block is provided on the front side of the front mold, a first through cavity and a second through cavity are respectively provided at both ends of the V-shaped connecting block, and the outer ends of the two through cavities are connected to the outside, the first flow channel and the second flow channel both pass through the corresponding holes on the front mold, and respectively pass through the first through cavity and the second through cavity, and pass out from the outside of the through cavity, the first flow channel and the second flow channel located on the outside of the through cavity are respectively connected to the first supply bin and the second supply bin through the first switch valve and the second switch valve.

2. A sandwich injection mold according to claim 1, characterized in that: The rear side of the front mold is provided with a clamping groove for the spring clamping column, and the clamping groove is arranged concentrically with the guide groove.

3. A sandwich injection mold according to claim 1, characterized in that: A sealing cover is provided at the injection hole, a plug matching the injection hole is provided on one side of the sealing cover, and a high temperature resistant sealing pad is provided at the other end of the plug.

4. A sandwich injection mold according to claim 1, characterized in that: The front mold is provided with a receiving cavity for accommodating a high-pressure injection molding machine head.

5. The sandwich injection mold according to claim 1, characterized in that: Pumps are provided on the first flow channel and the second flow channel respectively.

6. The sandwich injection mold according to claim 1, characterized in that: The first switch valve and the second switch valve are electrically connected to the main control module, and the switch of the switch valve is adjusted by the main control module.

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