Host system for producing five-layer co-extrusion sheet

Abstract

The utility model discloses a host system for producing five-layer co-extrusion sheets, which comprises three extruders, each extruder is internally provided with a feeding runner for conveying materials, the three extruders are arranged in a fan shape, and the feeding runners of two adjacent extruders have an included angle of 25-35 degrees; the five-layer distributor comprises three inlets, a layering runner communicated with the three inlets and a co-extrusion runner communicated with the layering runner, the three inlets are communicated with the feeding runners of the three extruders respectively, and the layering runner is constructed to be capable of dividing materials input by the three inlets into five material flows and then conveying the five material flows to the co-extrusion runner; the mold comprises a feed port, an extrusion port and an extrusion runner communicated with the feed port and the extrusion port, the feed port is communicated with the co-extrusion runner, and the width of the extrusion port is larger than that of the feed port; according to the five-layer distributor, materials conveyed to the five-layer distributor by the extruder flow smoothly, clear and uniform layering of the materials is ensured, and the quality of finally extruded products is improved.

Description

Technical Field

[0001] The present application relates to the technical field of plastic sheet production equipment, and in particular to a host system for producing five-layer co-extruded sheets. Background Art

[0002] Since most models on the market are three-layer co-extrusion and rarely five-layer, and the layout takes up more space, the flow channel angle design is not precise enough, resulting in poor raw material transportation and dead corners that affect product quality; in the past, most distributor flow channel designs were not reasonable, affecting the extruder layout, material transportation was not smooth, and the raw material stratification was not obvious and was scattered. Summary of the invention

[0003] In order to solve the above-mentioned extrusion problem, the purpose of the present application is to provide a host system for producing five-layer co-extruded sheets with smooth material flow, clear and uniform layering.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solution: a host system for producing a five-layer co-extruded sheet, comprising:

[0005] Three extruders, each of which has a feed channel for material transportation, the three extruders are arranged in a fan shape, and the feed channels of two adjacent extruders have an angle of 25°-35°;

[0006] A five-layer distributor, comprising three inlets, a stratified flow channel connected to the three inlets, and a co-extrusion flow channel connected to the stratified flow channel, wherein the three inlets are respectively connected to the feed flow channels of the three extruders, and the stratified flow channel is configured to split the materials input from the three inlets into five streams and then transport them to the co-extrusion flow channel; and

[0007] The die comprises a feed port, an extrusion port and an extrusion flow channel connecting the feed port and the extrusion port, the feed port is connected to the co-extrusion flow channel, and the width of the extrusion port is greater than the width of the feed port.

[0008] In the above technical solution, it is further preferred that the three inlets are respectively a first inlet, a second inlet and a third inlet, and the second inlet and the third inlet are relatively arranged left and right with the first inlet as the center.

[0009] In the above technical solution, it is further preferred that the second inlet and the third inlet are respectively connected to the two extruders through an elbow.

[0010] In the above technical solution, it is further preferred that the layered flow channel includes five branch branches, the input end of each branch branch is connected to one of the inlets, and the output end of each branch branch is connected to the co-extrusion flow channel.

[0011] In the above technical solution, it is further preferred that the width of the extrusion flow channel gradually increases in the direction from the feed port to the extrusion port.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The angle design of the three extruders in the present application allows for smooth material flow from the extruders to the five-layer distributor; the flow channel design within the five-layer distributor ensures clear and uniform material stratification, thereby improving the quality of the final extruded product. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A top view of a host system provided in an embodiment of the present application;

[0015] Figure 2 for Figure 1 A local enlarged schematic diagram of the middle A;

[0016] Figure 3 for Figure 1 The main view of the host system in .

[0017] Among them: 100, main machine system; 1, five-layer distributor; 11, first inlet; 12, second inlet; 13, third inlet; 2, mold; 21, feed port; 22, extrusion port; 3, main machine; 4, first auxiliary machine; 5, second auxiliary machine; 6, elbow. DETAILED DESCRIPTION

[0018] To describe the technical content, structural features, achieved purpose and effect of the application in detail, the technical solutions in the embodiments of the application will be described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all of the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shape, structure and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0019] An embodiment of the present application provides a host system for producing a five-layer co-extruded sheet. The host system extrude the five-layer co-extruded sheet through three extruders.

[0020] like Figure 1 , 3 As shown, the host system 100 includes: three extruders, a five-layer distributor 1 connected to the three extruders, and a mold 2 connected to the five-layer distributor 1, each extruder has a feed channel for material transportation, and the feed channel is connected to the five-layer distributor 1 to transport materials into the five-layer distributor 1.

[0021] like Figure 1 As shown, three extruders are arranged in a fan shape in front of the five-layer distributor 1. The three extruders can provide different materials to the five-layer distributor 1 according to production requirements to form different layers and reduce the space occupied by the equipment. The three extruders include a main machine 3, a first auxiliary machine 4 and a second auxiliary machine 5. The main machine 3 is arranged in front of the five-layer distributor 1. The first auxiliary machine 4 and the second auxiliary machine 5 are arranged opposite to each other with the main machine 3 as the center. The feed channels of the first auxiliary machine 4 and the second auxiliary machine 5 form an angle α of 25°-35° with the feed channel of the main machine 3, thereby reducing the distance between the extrusion ports of the first auxiliary machine 4 and the second auxiliary machine 5 and the five-layer distributor 1, making the feed of the first auxiliary machine 4 and the second auxiliary machine 5 smoother.

[0022] like Figure 1 , 2 As shown, the five-layer distributor 1 includes three inlets, a stratified flow channel connected to the three inlets, and a co-extrusion flow channel connected to the stratified flow channel. The three inlets are respectively a first inlet 11 connected to the main machine 3, a second inlet 12 connected to the first auxiliary machine 4, and a third inlet 13 connected to the second auxiliary machine 5. The second inlet 12 and the third inlet 13 are arranged opposite to each other on the left and right with the first inlet 13 as the center.

[0023] The second inlet 12 and the first auxiliary machine 4 and the third inlet 13 and the second auxiliary machine 5 are respectively connected via an elbow 6, wherein the elbow 6 has a connecting flow channel with an angle β of 120°. The two elbows 6 ensure that the materials transported by the first auxiliary machine 4 and the second auxiliary machine 5 flow smoothly without dead angles, thereby improving the transportation efficiency.

[0024] The layered flow channel divides the materials input from three inlets into five strands and then conveys them to the co-extrusion flow channel. The five strands of materials are evenly layered and co-extruded in the co-extrusion flow channel. The layered flow channel includes five branching paths, the input end of each branching path is connected to one of the inlets, and the output end of each branching path is connected to the co-extrusion flow channel. The five-layer co-extruded material includes the middlemost middle layer, the first inner layer located on the upper side of the middle layer, the second inner layer located on the lower side of the middle layer, the first outer layer located on the upper side of the first inner layer, and the second outer layer located on the lower side of the second inner layer. The output end of the branching path connected to the middle layer is located in front of the other branching paths, and the output ends of the branching paths connected to the first inner layer and the branching paths connected to the second inner layer are located in front of the output ends of the branching paths connected to the first outer layer and the branching paths connected to the second outer layer, so that the five-layer material can be evenly and clearly layered in the co-extrusion flow channel, thereby improving the quality of the final product.

[0025] The die 2 includes a feed port 21, an extrusion port 22, and an extrusion flow channel connecting the feed port 21 and the extrusion port 22. The feed port 21 is connected to the co-extrusion flow channel, and the width of the extrusion port 22 is greater than the width of the feed port 21. The extrusion flow channel is a hanger-type die flow channel, the width of the extrusion flow channel gradually increases from the feed port 21 to the extrusion port 22, and the height gradually decreases from the feed port 21 to the extrusion port 22. The extrusion flow channel has a smooth transition inside without dead angles, ensuring that the five layers of material are clearly layered and not mixed and extruded from the extrusion port 22 in a sheet shape.

[0026] The angle design of the three extruders in the present application allows for smooth material flow from the extruders to the five-layer distributor; the flow channel design within the five-layer distributor ensures clear and uniform material stratification, thereby improving the quality of the final extruded product.

[0027] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, and the scope of protection required by the present application is defined by the attached claims, description and their equivalents.

Claims

1. A host system for producing five-layer co-extruded sheets, characterized in that: include: Three extruders, each of which has a feed channel for material transportation, the three extruders are arranged in a fan shape, and the feed channels of two adjacent extruders have an angle of 25°-35°; A five-layer distributor, comprising three inlets, a stratified flow channel connected to the three inlets, and a co-extrusion flow channel connected to the stratified flow channel, wherein the three inlets are respectively connected to the feed flow channels of the three extruders, and the stratified flow channel is configured to split the materials input from the three inlets into five streams and then transport them to the co-extrusion flow channel; and The die comprises a feed port, an extrusion port and an extrusion flow channel connecting the feed port and the extrusion port, the feed port is connected to the co-extrusion flow channel, and the width of the extrusion port is greater than the width of the feed port.

2. The host system according to claim 1, characterized in that: The three inlets are respectively a first inlet, a second inlet and a third inlet. The second inlet and the third inlet are arranged opposite to each other on the left and right with the first inlet as the center.

3. The host system according to claim 2, characterized in that: The second inlet and the third inlet are respectively connected to the two extruders through an elbow.

4. The host system according to claim 1, characterized in that: The layered flow channel includes five branch paths, the input end of each branch path is connected to one of the inlets, and the output end of each branch path is connected to the co-extrusion flow channel.

5. The host system according to claim 1, characterized in that: The width of the extrusion flow channel gradually increases in the direction from the feed port to the extrusion port.

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