Multi-layer co-injection hot runner hot nozzle

Abstract

The utility model relates to a multi-layer co-injection hot runner hot nozzle which comprises a hot nozzle body, a valve needle is arranged in the middle of the hot nozzle body, a plurality of nozzle cores are sleeved by taking the valve needle as a center, the plurality of nozzle cores at least comprise a nozzle core A and a nozzle core B, the nozzle core A is used as an injection runner for one material or color, and the nozzle core B is used as an injection runner for another material or color, so that a multi-runner injection supply structure is formed. And the nozzle core A performs injection of one material or color, and the nozzle core B performs injection of another material or color, or the nozzle core A and the nozzle core B perform injection of two materials or colors at intervals or simultaneously, so that the multi-layer co-injection hot runner hot nozzle structure is formed.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding technology, especially thermal nozzle structure of multilayer co-injection hot runner, specifically, a kind of multilayer co-injection hot runner thermal nozzle. BACKGROUND

[0002] Hot runner system is more and more popular in mold application, and product demand is more and more diversified and refined. The double-color injection molding used at present is for two materials or two colors, and the material or color is shot by one shot, and then another material or color is shot by two shots after rotating through mold mechanism, to realize the injection molding of product encapsulation form.

[0003] The product obtained by double-color injection molding is combined together by two different materials or colors, realizes double color, and can meet the appearance demand or simple function demand of part of product;The double-color injection molding at present needs two sets of mold and two sets of hot runner system to realize, and the structure is complicated, and cannot meet the appearance demand of more diversification such as gradient color of customer.

[0004] Therefore, it is necessary to provide a multilayer co-injection hot runner thermal nozzle to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at providing a multilayer co-injection hot runner thermal nozzle.

[0006] A multilayer co-injection hot runner thermal nozzle, comprising a thermal nozzle body, a valve needle is arranged in the middle of the thermal nozzle body, a plurality of nozzle cores are sleeved around the valve needle, the plurality of nozzle cores at least include nozzle core A and nozzle core B, the nozzle core A is used as a material or color injection runner, the nozzle core B is used as another material or color injection runner, a multi-runner injection supply structure is formed, the nozzle core A is used for material or color injection, the nozzle core B is used for another material or color injection or the nozzle core A and the nozzle core B are interval / two materials or colors are injected at the same time, to form a multilayer co-injection hot runner thermal nozzle structure.

[0007] Further, the thermal nozzle body is provided with a thermal nozzle runner A and a thermal nozzle runner B communicating the nozzle core A and the nozzle core B.

[0008] Further, the nozzle core A is sleeved with the nozzle core B outside, and a pressure cap is arranged corresponding to the nozzle core A.

[0009] Further, the nozzle core B includes nozzle core B ring flow channel groove and nozzle core B feeding hole.

[0010] Further, the thermal nozzle runner B is used in cooperation with the nozzle core B through valve sleeve insert.

[0011] Further, the valve sleeve insert includes valve sleeve insert flow channel groove communicating the thermal nozzle runner B and the nozzle core B, and the valve sleeve insert is positioned and installed in the thermal nozzle body with high precision through valve sleeve insert positioning hole.

[0012] Further, the hot nozzle body is externally sleeved with a heating module.

[0013] Further, corresponding to the valve needle, the hot nozzle body is further provided with a heat insulation cap.

[0014] Compared with the prior art, the utility model realizes that a set of hot nozzle system has multiple layers of independent flow channels, and each layer of flow channels does not interfere with each other, different materials and colors can be respectively injected, product common injection is realized, gradient color injection and sandwich injection are realized, appearance can realize product gradient color injection, two different colors are simultaneously injected into the mixed injection of the mold cavity in the fusion state, and the gradient fusion is very natural, the color is from light to dark, or from deep to shallow, or slowly transitions from one color to another color, this technology overturns the single-layer single-color concept of conventional injection products, more richly meets the market demand for various complex appearances of plastic products, improves the requirement of people on the quality of raw products, realizes sandwich injection, including carbonated soft drinks, mineral water, fruit juice, sauce, provides a complete and integrated solution for the production of food and beverage products that need to strengthen the barrier performance, and has high cost performance, production efficiency and flexibility. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is the structure schematic diagram of the utility model.

[0016] Fig. 2 It is the structure schematic diagram of the mouth core B.

[0017] Fig. 3 It is the structure schematic diagram of the valve sleeve insert. DETAILED DESCRIPTION

[0018] Embodiment:

[0019] With reference to Figs. 1-3 , the embodiment shows a multi-layer common injection hot flow channel hot nozzle, including hot nozzle body 1, the middle part of hot nozzle body 1 is provided with valve needle 6, with valve needle 6 as center, it is sleeved with several mouth cores, several mouth cores at least include mouth core A 3 and mouth core B 4, mouth core A 3 is used as one material or color injection flow channel, mouth core B 4 is used as another material or color injection flow channel, forms multi-flow channel injection supply structure, mouth core A 3 carries out one material or color injection, mouth core B 4 carries out another material or color injection or mouth core A 3 and mouth core B 4 interval / simultaneously carries out two materials or color injection, forms multi-layer common injection hot flow channel hot nozzle structure.

[0020] Hot nozzle flow channel A 11 and hot nozzle flow channel B 12 that communicate mouth core A 3 and mouth core B 4 are provided in hot nozzle body 1.

[0021] Mouth core A 3 is sleeved with mouth core B 4 outside, and is provided with pressure cap 2 corresponding to mouth core A 3.

[0022] The nozzle core B4 comprises a nozzle core B ring flow channel groove 41 and a nozzle core B feed hole 42.

[0023] The hot nozzle flow channel B12 is used in cooperation with the nozzle core B5 through the valve sleeve insert 5.

[0024] The valve sleeve insert 5 comprises a valve sleeve insert flow channel groove 52 which communicates the hot nozzle flow channel B12 and the nozzle core B4, and the valve sleeve insert 5 is high-precision positioned and installed on the hot nozzle body 1 through the valve sleeve insert positioning hole 51.

[0025] The hot nozzle body 1 is externally sleeved with a heating module 8.

[0026] Corresponding to the valve needle 6, the hot nozzle body 1 is further provided with a heat insulation cap 6.

[0027] Compared with the prior art, the utility model realizes that a set of hot nozzle system has multiple layers of independent flow channels at the same time, and each layer of flow channels does not interfere with each other, different materials and colors can be respectively injection molded, product common injection is realized, gradual color injection molding and sandwich injection molding are realized; on the appearance, product gradual color injection molding can be realized, two different colors are mixed injection molded into the mold cavity in the fusion state at the same time, and the gradual change fusion is very natural, the color is from light to dark, or from deep to shallow, or slowly transitions from one color to another color, this technology overturns the single-layer single-color concept of conventional injection molded products; more rich market demand for various complex appearances of plastic products, improve people's requirements for the quality of raw products; sandwich injection molding is realized, including carbonated soft drinks, mineral water, fruit juice, sauce; a complete and integrated solution is provided for the production of food and beverage products which need to strengthen the barrier performance, and the solution has high cost performance, production efficiency and flexibility.

[0028] The above only describes some embodiments of the utility model. For ordinary skilled persons in the art, without departing from the creative concept of the utility model, a number of modifications and improvements can be made, and these all belong to the protection scope of the utility model.

Claims

1. A multilayer coinjection hot-runner hot nozzle characterized by: The hot nozzle body is provided with a valve needle in the middle part, a plurality of nozzle cores are sleeved around the valve needle, the plurality of nozzle cores at least include nozzle core A and nozzle core B, the nozzle core A is used as a material or color injection channel, the nozzle core B is used as another material or color injection channel, a multi-channel injection supply structure is formed, the nozzle core A performs material or color injection, the nozzle core B performs another material or color injection, or the nozzle core A and the nozzle core B are spaced / simultaneously perform two material or color injection, and a multi-layer co-injection hot runner hot nozzle structure is formed.

2. A multi-layer co-injection hot nozzle of claim 1, wherein: The hot nozzle body is provided with hot nozzle channel A and hot nozzle channel B which are communicated with the nozzle core A and the nozzle core B.

3. A multi-layer co-injection hot nozzle according to claim 2, wherein: The nozzle core A is sleeved with the nozzle core B outside, and a pressure cap is arranged corresponding to the nozzle core A.

4. A multi-layer co-injection hot nozzle according to claim 3, wherein: The nozzle core B includes nozzle core B circulation channel groove and nozzle core B feeding hole.

5. A multi-layer co-injection hot nozzle according to claim 4, wherein: The hot nozzle channel B is matched with the nozzle core B through the valve sleeve insert.

6. A multi-layer co-injection hot nozzle of claim 5, wherein: The valve sleeve insert includes valve sleeve insert channel groove which is communicated with the hot nozzle channel B and the nozzle core B, and the valve sleeve insert is high-precision positioned and arranged corresponding to the hot nozzle body through valve sleeve insert positioning hole.

7. A multi-layer co-injection hot nozzle according to claim 6, wherein: The hot nozzle body is sleeved with a heating module outside.

8. A multi-layer co-injection hot nozzle according to claim 7, wherein: Corresponding to the valve needle, the hot nozzle body is further provided with a heat insulation cap.

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