Multi-runner co-extrusion die head for production of multi-layer co-extrusion polymer suction pipe

Abstract

The utility model relates to the technical field of straw production dies, in particular to a multi-runner co-extrusion die head for producing a multi-layer co-extrusion macromolecule straw. An inner-layer mold pipe and an outer-layer mold pipe are integrally and fixedly arranged on the outer side of the inner mold pipe; a cooling inner groove is formed in the inner mold pipe, a water flow baffle is fixedly assembled in the middle of the cooling inner groove, a gap for water flow to pass through is formed between one end of the water flow baffle and the cooling inner groove, and the other end of the water flow baffle is connected with a water supply pipe and a discharge pipe in a penetrating mode on the two sides of the cooling inner groove respectively. According to the utility model, the circulating cooling structure can effectively control the temperature of the inner mold pipe, and ensures that the mold works in a stable temperature environment. The stable temperature can avoid the defects of deformation, layering, bubbles and the like caused by overheating or uneven temperature in the extrusion process of the plastic raw materials, so that the materials of all layers of the extruded multi-layer macromolecular straw are uniformly distributed and tightly combined, and the strength, transparency and appearance quality of the product are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to straw production mould technical field, concretely relates to a multilayer co -extrusion high molecule straw production with multichannel co -extrusion die head. BACKGROUND

[0002] In the high molecule straw production field, along with the diversification of market demand and the continuous improvement of product quality requirement, the traditional straw production technology gradually exposes some limitations, which provides an opportunity for the development of new multichannel co -extrusion die head technology. Single layer straw function single cannot satisfy the demand: the traditional single layer straw is limited in function, can only satisfy the basic drinking demand. Along with the improvement of consumer's demand for beverage experience and the attention of food industry to product safety, environmental protection and other aspects, the multilayer co -extrusion high molecule straw with multiple characteristics emerges as the times require. For example, the straw with antibacterial, temperature resistance, oxygen barrier and other functions can better adapt to the packaging and use demand of different beverages, and this is difficult to achieve by the traditional single layer straw. The existing multilayer straw production process has defects: the early multilayer straw production process has defects in die head design and production process. On the one hand, the extrusion die head cannot accurately control the extrusion amount and flow rate of each layer of material, resulting in uneven thickness of each layer of multilayer straw, affecting product quality and performance. For example, in the extrusion process, the flow rate of different layers of plastic raw materials may be different, so that some parts of the straw are too thick or too thin in a layer, reducing the stability and practicability of the product. On the other hand, the fusion of each layer of material is not close enough, which is easy to cause delamination, affecting the overall strength and appearance of the straw.

[0003] However, in the production process, plastic extrusion will generate a large amount of heat, and if the mold is not cooled in time or uniformly, the mold temperature will be too high, which will cause a series of problems. The high temperature will change the flowability of the plastic raw material, making it difficult to ensure the accuracy and stability of extrusion, causing product size deviation, rough surface and other quality problems. At the same time, in order to avoid overheating of the mold, the traditional production process has to be frequently stopped for cooling, which greatly reduces the production efficiency and increases the production cost.

[0004] Therefore, the technical personnel in the art provide a multilayer co -extrusion high molecule straw production with multichannel co -extrusion die head to solve the problems in the above background technology. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides:

[0006] A multilayer co -extrusion high molecule straw production with multichannel co -extrusion die head, comprising: an inner die pipe; The inner layer die pipe and the outer layer die pipe are integrally arranged on the outer side of the inner die pipe;

[0007] The inner mold pipe is internally provided with a cooling inner groove, and a water flow baffle is fixedly arranged in the middle of the cooling inner groove, a gap for water flow is formed between one end of the water flow baffle and the cooling inner groove, and a water supply pipe and a discharge pipe are respectively connected to the other end of the water flow baffle on both sides of the cooling inner groove.

[0008] The water supply pipe and the discharge pipe are connected with a circulating cooling structure.

[0009] Preferably, the circulating cooling structure comprises a cooling water tank connected with the discharge pipe, and an overflow plate is fixedly arranged in the inside of the cooling water tank.

[0010] Preferably, one side of the overflow plate is provided with a semiconductor refrigerator mounted in the inside of the cooling water tank.

[0011] Preferably, the refrigeration end of the semiconductor refrigerator is located in the inside of the cooling water tank, and the heat dissipation end of the semiconductor refrigerator is located outside the cooling water tank, and a heat dissipation fan for active air cooling is arranged outside the heat dissipation end of the semiconductor refrigerator.

[0012] Preferably, one end of the bottom of the water supply pipe is connected with a supply pump, and the water pumping end of the supply pump is connected to the inside of the cooling water tank.

[0013] Preferably, one end of the inner layer mold pipe is integrally fixed with an inclined pipe one, and one end of the inclined pipe one is integrally fixed with an inner layer extrusion pipe.

[0014] One end of the outer layer mold pipe is integrally fixed with an inclined pipe two, and one end of the inclined pipe two is integrally fixed with an outer layer extrusion pipe.

[0015] Preferably, the inner layer mold pipe is throughly connected with an inner layer extrusion supply pipe on the side, and one end of the inner layer extrusion supply pipe away from the inner layer mold pipe is fixedly provided with a mounting part one sealingly mounted with an external plastic extruder.

[0016] The outer layer mold pipe is throughly connected with an outer layer extrusion supply pipe sealingly sleeved on the outside of the inner layer extrusion supply pipe, and the top of the outer layer extrusion supply pipe is integrally fixed with a mounting part two sealingly mounted with an external plastic extruder.

[0017] The outer wall of the cooling water tank is provided with a controller.

[0018] The technical effects and advantages of the utility model are as follows:

[0019] The circulating cooling structure can effectively control the temperature of the inner mold pipe, and ensure that the mold works in a stable temperature environment. The stable temperature can avoid defects such as deformation, delamination and bubbles of the plastic raw material in the extrusion process due to overheating or uneven temperature, so that the materials of the extruded multi-layer polymer straw are uniformly distributed and closely combined, and the strength, transparency and appearance quality of the product are improved.

[0020] This invention features a circulating cooling system composed of a cooling water tank, a semiconductor cooler, and a supply pump. This system can quickly remove the heat generated by the mold, allowing the mold to work continuously and stably without frequent shutdowns for cooling, thus significantly improving production efficiency. Furthermore, the design of the multi-layer mold tube and extrusion supply tube allows different plastic raw materials to be extruded and fused simultaneously, forming a multi-layer suction tube in one step, reducing production steps and further increasing production speed. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a multi-channel co-extrusion die for producing multi-layer co-extruded polymer straws provided in this application;

[0022] Figure 2 This is a schematic diagram of the front structure of a multi-channel co-extrusion die for producing multi-layer co-extruded polymer straws, as provided in this application.

[0023] Figure 3 This is a schematic diagram of the inner die tube in a multi-channel co-extrusion die head for producing multi-layer co-extruded polymer straws, as provided in this application.

[0024] Figure 4 This is a schematic diagram of the semiconductor cooler in a multi-channel co-extrusion die for producing multi-layer co-extruded polymer straws, as provided in this application.

[0025] Figure 5 This is a schematic diagram of the structure at point A in a multi-channel co-extrusion die for producing multi-layer co-extruded polymer straws, as provided in this application.

[0026] In the picture:

[0027] 1. Inner mold tube; 2. Inner layer mold tube; 3. Angled tube one; 4. Inner layer extrusion tube; 5. Outer layer mold tube; 6. Angled tube two; 7. Outer layer extrusion tube; 8. Inner layer extrusion supply tube; 9. Assembly one; 10. Outer layer extrusion supply tube; 11. Assembly two; 12. Cooling inner tank; 13. Water flow baffle; 14. Water supply pipe; 15. Discharge pipe; 16. Supply pump; 17. Cooling water tank; 18. Overflow plate; 19. Semiconductor cooler; 20. Cooling fan; 21. Controller. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The examples of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0029] For examples, please refer to Figures 1-5 This embodiment provides a multi-channel co-extrusion die for producing multi-layer co-extruded polymer straws, comprising: an inner die tube 1; an inner layer die tube 2 and an outer layer die tube 5 are integrally fixedly disposed on the outer side of the inner die tube 1; a cooling inner groove 12 is formed inside the inner die tube 1, and a water flow baffle 13 is fixedly assembled in the middle of the cooling inner groove 12. One end of the water flow baffle 13 has a gap between it and the cooling inner groove 12 for water to flow through, and the other end of the water flow baffle 13 is respectively connected to a water supply pipe 14 and a discharge pipe 15 through both sides of the cooling inner groove 12; the water supply pipe 14 and the discharge pipe 15 are connected to a circulating cooling structure. The circulating cooling structure includes a cooling water tank 17 that is connected through the discharge pipe 15, and an overflow plate 18 is fixedly disposed inside the cooling water tank 17.

[0030] A thermoelectric cooler 19 is installed on one side of the overflow plate 18, inside the cooling water tank 17. The cooling end of the thermoelectric cooler 19 is located inside the cooling water tank 17, and the heat dissipation end of the thermoelectric cooler 19 is located outside the cooling water tank 17. An active air-cooling cooling fan 20 is installed outside the heat dissipation end of the thermoelectric cooler 19. One end of the water supply pipe 14 is connected to a supply pump 16, and the pumping end of the supply pump 16 is connected to the inside of the cooling water tank 17.

[0031] One end of the inner mold tube 2 is integrally fixed with an angled tube 3, and one end of the angled tube 3 is integrally fixed with an inner extrusion tube 4; one end of the outer mold tube 5 is integrally fixed with an angled tube 6, and one end of the angled tube 6 is integrally fixed with an outer extrusion tube 7. An inner extrusion supply tube 8 is connected through the side of the inner mold tube 2, and an assembly 9 for sealing and installation with an external plastic extruder is fixedly installed at the end of the inner extrusion supply tube 8 away from the inner mold tube 2; an outer extrusion supply tube 10 is connected through the side of the outer mold tube 5 and sealed outside the inner extrusion supply tube 8, and an assembly 11 for sealing and installation with an external plastic extruder is integrally fixedly installed at the top of the outer extrusion supply tube 10. A controller 21 is installed on the outer wall of the cooling water tank 17.

[0032] According to the above embodiments, the working principle of this invention is as follows:

[0033] Circulating cooling principle: In the circulating cooling structure, water in the cooling water tank 17 is drawn by the supply pump 16 and enters the cooling inner tank 12 of the inner mold tube 1 through the water supply pipe 14; the water flows in the cooling inner tank 12, guided by the water flow baffle 13, and flows from one end of the cooling inner tank 12 to the other end, absorbing the heat generated by the plastic extrusion of the inner mold tube 1 and surrounding mold components, and then flows back to the cooling water tank 17 through the discharge pipe 15; the overflow plate 18 in the cooling water tank 17 can stabilize the water level, and the semiconductor cooler 19 cools the returning hot water; its cooling end absorbs heat in the water tank, and the heat dissipation end is actively cooled by the cooling fan 20, so that the water temperature in the cooling water tank 17 is kept within a suitable range, continuously providing cooling for the inner mold tube 1, and ensuring stable mold operation;

[0034] Straw extrusion principle: The external plastic extruder delivers plastic raw materials of different materials to the inner extrusion supply pipe 8 and the outer extrusion supply pipe 10 through the first assembly 9 and the second assembly 11, respectively. The plastic raw materials flow into the inner die pipe 2 in the inner extrusion supply pipe 8, and enter the inner extrusion pipe 4 through the angled tube 1 3. The plastic raw materials in the outer extrusion supply pipe 10 flow into the outer die pipe 5, and enter the outer extrusion pipe 7 through the angled tube 2 6. At the inner extrusion pipe 4 and the outer extrusion pipe 7, the plastic raw materials of different layers are extruded and fused at the same time, thereby forming a multi-layer co-extruded polymer straw. The controller 21 can control the operation of equipment such as the supply pump 16, the semiconductor cooler 19 and the cooling fan 20 to ensure that the entire production process is stable and efficient.

[0035] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A multi-channel co-extrusion die for producing multi-layer co-extruded polymer straws, characterized in that, include: Inner mold tube (1); The inner mold tube (1) is fixedly provided with an inner layer mold tube (2) and an outer layer mold tube (5) on its outer side; The inner mold tube (1) has a cooling inner groove (12) inside, and a water flow baffle (13) is fixedly installed in the middle of the cooling inner groove (12). There is a gap between one end of the water flow baffle (13) and the cooling inner groove (12) for water to flow through, and the other end of the water flow baffle (13) is connected to a water supply pipe (14) and a discharge pipe (15) respectively on both sides of the cooling inner groove (12). The water supply pipe (14) and the discharge pipe (15) are connected to a circulating cooling structure.

2. The multi-channel co-extrusion die for producing multi-layer co-extruded polymer straws according to claim 1, characterized in that, The circulating cooling structure includes a cooling water tank (17) that is connected to the discharge pipe (15), and an overflow plate (18) is fixedly installed inside the cooling water tank (17).

3. The multi-channel co-extrusion die for producing multi-layer co-extruded polymer straws according to claim 2, characterized in that, A semiconductor cooler (19) is installed inside the cooling water tank (17) on one side of the overflow plate (18).

4. The multi-channel co-extrusion die for producing multi-layer co-extruded polymer straws according to claim 3, characterized in that, The cooling end of the semiconductor cooler (19) is located inside the cooling water tank (17), and the heat dissipation end of the semiconductor cooler (19) is located outside the cooling water tank (17). An active air-cooling cooling fan (20) is installed on the outside of the heat dissipation end of the semiconductor cooler (19).

5. The multi-channel co-extrusion die for producing multi-layer co-extruded polymer straws according to claim 1, characterized in that, The bottom end of the water supply pipe (14) is connected to a supply pump (16), and the pumping end of the supply pump (16) is connected to the inside of the cooling water tank (17).

6. The multi-channel co-extrusion die for producing multi-layer co-extruded polymer straws according to claim 1, characterized in that, One end of the inner layer mold tube (2) is fixed with an angled tube (3), and one end of the angled tube (3) is fixed with an inner layer extrusion tube (4). One end of the outer mold tube (5) is fixed with a beveled tube (6), and one end of the beveled tube (6) is fixed with an outer extrusion tube (7).

7. The multi-channel co-extrusion die for producing multi-layer co-extruded polymer straws according to claim 6, characterized in that, The inner layer mold tube (2) is connected to the inner layer extrusion supply tube (8) through the side, and the end of the inner layer extrusion supply tube (8) away from the inner layer mold tube (2) is fixedly provided with a fitting (9) that is sealed and installed with the external plastic extruder. The outer layer mold tube (5) is connected to an outer layer extrusion supply tube (10) that is sealed and sleeved outside the inner layer extrusion supply tube (8) and the top of the outer layer extrusion supply tube (10) is fixedly provided with a fitting two (11) that is sealed and installed with the external plastic extruder.

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