Three-layer co-extrusion production line

Abstract

The utility model discloses a three-layer co-extrusion production line, which comprises an extrusion part, a feeding part and a die device, the extrusion part comprises a rack and extrusion units respectively arranged above the rack, each extrusion unit comprises a driving device and at least one extrusion screw arranged at the output end of the driving device, the extrusion screw is sleeved with an extruder barrel, and the die device is connected with the extruder barrel. The end, away from the driving device, of the extrusion screw is provided with a machine head, the feeding part comprises a feeding cylinder and a feeding machine base arranged on one side of the feeding cylinder, the feeding cylinder is communicated with the corresponding extruder cylinder, and the die device comprises runners connected with the machine heads and die heads communicated with the runners. A distributor used for uniform extrusion is arranged at the input end of the die head, a worker only needs to operate feeding, a co-extrusion production line can carry out composite production of uniform extrusion, all extrusion units can be communicated with the die head through runners, multi-line operation of a single worker can be achieved, production efficiency is improved, and the co-extrusion die head belongs to the technical field of co-extrusion production.

Description

Technical Field

[0001] The utility model belongs to the technical field of co-extrusion production, and more specifically relates to a three-layer co-extrusion production line. Background Art

[0002] A co-extrusion line is a production line that can produce plastic tubes, plates, sheets, films, and some special-shaped materials. Common types include pipe extrusion lines, plastic extrusion lines, wood-plastic extrusion lines, composite pipe extrusion lines, and pelletizing extrusion lines.

[0003] The extruder is the core of the extrusion production line. Common extruders include parallel twin-screw extruder, SJ series new high-efficiency single-screw extruder, SJZ series conical twin-screw plastic extruder and planetary screw extruder.

[0004] The existing co-extrusion production line requires multiple workers to perform complex operations, has low production efficiency, and is difficult to meet market demand. Utility Model Content

[0005] The main purpose of the utility model is to provide a three-layer co-extrusion production line which is convenient for workers to operate and improves production efficiency.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is:

[0007] A three-layer co-extrusion production line includes an extrusion section, which includes three parallel frames and extrusion units respectively arranged above the frames, the extrusion unit including a driving device and at least one extrusion screw arranged at the output end of the driving device, the extrusion screw is provided with an extrusion barrel on the outside, and a head is provided at the end of the extrusion screw away from the driving device; a feeding section, which is located above the extrusion section, and the feeding section includes a feeding barrel arranged perpendicular to the upper end face of the extrusion barrel and a feeding machine base arranged on one side of the feeding barrel, the feeding barrels are respectively connected to the corresponding extrusion barrels; a mold device, which is located at the output end of the extrusion section, and the mold device includes flow channels respectively connected to each of the heads and die heads respectively connected to each of the flow channels, the die heads are arranged vertically downward, and the input end of the die head is also provided with a distributor for uniform extrusion.

[0008] In a specific embodiment of the present invention, the extrusion unit further includes a reducer, which is located between the driving device and the extrusion screw, the output end of the driving device is connected to the reducer, and the output end of the reducer is connected to the extrusion screw.

[0009] In a specific embodiment of the present invention, the extruder barrel includes several ordinary sections and vacuum sections arranged at intervals, and a feeding section is provided between the ordinary sections and the vacuum sections. The ordinary sections, the vacuum sections and the feeding sections are interconnected, and the feeding barrel is arranged perpendicular to the upper end face of the feeding section.

[0010] In a specific embodiment of the present invention, a cooling water pipe is provided on one side of each extruder barrel.

[0011] In a specific embodiment of the present invention, a wire groove is provided between the extruder barrel and the frame.

[0012] In a specific embodiment of the present invention, a pressure monitoring device is provided between each of the heads and the distributor.

[0013] In a specific embodiment of the present invention, three first flow channels are evenly spaced apart in the die head, and the three first flow channels are arranged parallel to each other. Three second flow channels are spaced apart in the distributor, and one end of each second flow channel is respectively connected to the corresponding extrusion unit, and the other end of each second flow channel is respectively connected to the corresponding first flow channel.

[0014] In a specific embodiment of the present invention, both sides and the upper end surface of the distributor are respectively provided with a first interface and a second interface corresponding to the extrusion unit.

[0015] In a specific embodiment of the present invention, a guide groove is provided between the second interface and the corresponding second flow channel.

[0016] In a specific embodiment of the present invention, a plurality of air holes are evenly spaced on the surface of the dispenser.

[0017] One of the above technical solutions of the utility model has at least one of the following advantages or beneficial effects:

[0018] The utility model provides an extrusion screw at the output end of a driving device, an extrusion barrel is sleeved on the outside of the extrusion screw, and a die head is provided at the end of the extrusion screw away from the driving device. Furthermore, by connecting the feeding barrels with the corresponding extrusion barrels respectively, and then providing a distributor at the input end of the die head, workers only need to operate the feeding, and the co-extrusion production line can perform uniform extrusion composite production. Moreover, each extrusion unit can be connected with the die head through a flow channel, so that multi-line operation can be realized by a single worker, thereby further improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] AttachmentFigure 1 This is an overall structural diagram of an embodiment of the utility model;

[0021] Attachment Figure 2 A side view of an embodiment of the present invention;

[0022] Attachment Figure 3 A top view of an embodiment of the present invention;

[0023] Attachment Figure 4 It is a front view of an embodiment of the utility model;

[0024] Attachment Figure 5 This is a die head structure diagram of an embodiment of the present utility model;

[0025] Attachment Figure 6 This is a structural diagram of a dispenser according to an embodiment of the present invention;

[0026] Attachment Figure 7 An exploded view of a dispenser according to an embodiment of the present invention;

[0027] Attachment Figure 8 This is a bottom view of a dispenser according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0030] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal connection between two elements, indirect connection, or an interactive relationship between two elements.

[0033] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention.

[0034] Refer to the attached Figure 1 To the attached Figure 8 As shown, a three-layer co-extrusion production line includes an extrusion section 1, a feeding section 2 and a mold device 3, wherein the feeding section 2 is located above the extrusion section 1, and the mold device 3 is located at the output end of the extrusion section 1. The extrusion section 1 includes three parallel frames 11, a reducer 15 and extrusion units respectively arranged above the frames 11, each extrusion unit includes a driving device 12 and an extrusion screw arranged at the output end of the driving device 12, an extrusion barrel 13 is provided on the outside of the extrusion screw, and a head 14 is provided at the end of the extrusion screw away from the driving device 12.

[0035] In one embodiment of the present invention, the driving device 12 is a driving motor, the reducer 15 is located between the driving device 12 and the extrusion screw, the output end of the driving device 12 is connected to the reducer 15, and the output end of the reducer 15 is connected to the extrusion screw.

[0036] In one embodiment of the present invention, the feeding part 2 includes a feeding barrel 21 arranged perpendicular to the upper end face of the extruder barrel 13 and a feeding machine base 22 arranged on one side of the feeding barrel 21. The feeding barrels 21 are respectively connected to the corresponding extruder barrels 13. The extruder barrel 13 includes a number of ordinary sections and vacuum sections arranged at intervals. A feeding section is also provided between the ordinary section and the vacuum section. The ordinary section, the vacuum section and the feeding section are connected to each other. The feeding barrel 21 is arranged perpendicular to the upper end face of the feeding section, and the feeding barrel 21 is connected to the feeding section.

[0037] In one embodiment of the present invention, the mold device 3 includes a flow channel 31 connected to each head 14 and a die head 32 connected to each flow channel 31. The die head 32 is arranged vertically downward, and a distributor 33 is also provided at the input end of the die head 32, so as to ensure that the co-extrusion production line can perform uniform extrusion composite production, and each extrusion unit can be connected with the die head 32 through the flow channel 31, thereby realizing multi-line operation of workers and further improving production efficiency.

[0038] In one embodiment of the present invention, a cooling water pipe 4 is provided on one side of each extruder barrel 13, a wire groove 5 and three supports for supporting the extruder barrel 13 are provided between the extruder barrel 13 and the frame 11, and the sides of the wire groove 5 are fixedly connected to the three supports respectively.

[0039] In one embodiment of the present invention, a pressure monitoring device 6 is provided between each head 14 and the distributor 33 , and two pressure sensor holes are provided at intervals on the upper end surface of the pressure monitoring device 6 for accurately controlling the pressure value in the flow channel 31 .

[0040] In one embodiment of the present invention, three first flow channels 321 are evenly spaced apart in the die head 32, and the three first flow channels 321 are arranged parallel to each other. Three second flow channels 331 are spaced apart in the distributor 33, and one end of each second flow channel 331 is respectively connected to the corresponding extrusion unit, and the other end of each second flow channel 331 is respectively connected to the corresponding first flow channel 321.

[0041] In one embodiment of the present invention, a plurality of air vents 8 for rapid cooling are evenly spaced on the surface of the distributor 33, and a first interface 332 and a second interface 333 are respectively provided on both sides and the upper end face of the distributor 33 corresponding to the extrusion unit, wherein a guide groove 7 is respectively provided between the second interface 333 and the corresponding second flow channel 331. After entering the second interface 333, the molten extrudate can flow into the corresponding second flow channel 331 through the guide groove 7, and then flow into the corresponding first flow channel 321 for extrusion molding.

[0042] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A three-layer co-extrusion production line, characterized in that: include: An extrusion section (1), the extrusion section (1) comprising three parallel frames (11) and extrusion units respectively arranged above the frames (11), the extrusion units comprising a driving device (12) and at least one extrusion screw arranged at the output end of the driving device (12), an extrusion barrel (13) being sleeved on the outside of the extrusion screw, and a die head (14) being provided at one end of the extrusion screw away from the driving device (12); A feeding portion (2), the feeding portion (2) is located above the extrusion portion (1), the feeding portion (2) comprises a feeding barrel (21) arranged perpendicular to the upper end surface of the extruder barrel (13) and a feeding machine base (22) arranged on one side of the feeding barrel (21), the feeding barrels (21) are respectively connected to the corresponding extruder barrels (13); A die device (3) is located at the output end of the extrusion section (1), and the die device (3) includes a flow channel (31) connected to each of the machine heads (14) and a die head (32) connected to each of the flow channels (31). The die head (32) is arranged vertically downward, and a distributor (33) for uniform extrusion is also provided at the input end of the die head (32).

2. The three-layer co-extrusion production line according to claim 1, characterized in that: The extrusion unit further comprises a reducer (15), wherein the reducer (15) is located between the driving device (12) and the extrusion screw, the output end of the driving device (12) is connected to the reducer (15), and the output end of the reducer (15) is connected to the extrusion screw.

3. The three-layer co-extrusion production line according to claim 1, characterized in that: The extruder barrel (13) includes a plurality of ordinary sections and vacuum sections arranged at intervals, and a feeding section is provided between the ordinary sections and the vacuum sections. The ordinary sections are connected to the vacuum sections and the feeding sections, and the feeding barrel (21) is arranged perpendicular to the upper end face of the feeding section.

4. The three-layer co-extrusion production line according to claim 3, characterized in that: A cooling water pipe (4) is provided on one side of each extruder barrel (13).

5. The three-layer co-extrusion production line according to claim 3, characterized in that: A wire groove (5) is provided between the extruder barrel (13) and the frame (11).

6. The three-layer co-extrusion production line according to claim 1, characterized in that: A pressure monitoring device (6) is provided between each of the machine heads (14) and the distributor (33).

7. The three-layer co-extrusion production line according to claim 1, characterized in that: Three first flow channels (321) are evenly spaced apart in the die head (32), and the three first flow channels (321) are arranged parallel to each other. Three second flow channels (331) are spaced apart in the distributor (33), and one end of each second flow channel (331) is connected to the corresponding extrusion unit, and the other end of each second flow channel (331) is connected to the corresponding first flow channel (321).

8. The three-layer co-extrusion production line according to claim 7, characterized in that: Both sides and the upper end surface of the distributor (33) are respectively provided with a first interface (332) and a second interface (333) corresponding to the extrusion unit.

9. The three-layer co-extrusion production line according to claim 8, characterized in that: A guide groove (7) is provided between the second interface (333) and the corresponding second flow channel (331).

10. The three-layer co-extrusion production line according to claim 8, characterized in that: The surface of the distributor (33) is also provided with a plurality of air holes (8) at even intervals.

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