Pressure regulation and control mechanism of double-layer co-extrusion plastic extruder

Abstract

The utility model relates to the technical field of plastic supply devices, in particular to a pressure regulation and control mechanism of a double-layer co-extrusion plastic extruder, which comprises a box body, a mounting rack, a three-way valve, a branch pipe I and a branch pipe II, the mounting rack is arranged at the upper end of the box body, a main pipeline is arranged on one side of the mounting rack, and the three-way valve is arranged on one side of the main pipeline. A first branch pipe is arranged on one side of the three-way valve, and a second branch pipe is arranged on one side of the first branch pipe. According to the utility model, the plastic spraying effect is adjusted through the arrangement of the branch pipe I and the branch pipe II, the functions of pressure-stabilizing spraying and pressure-regulating spraying are realized, and the problem that the conventional plastic extruder is lack of pressure regulation and multifunctional plastic spraying is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic supply devices, especially a pressure regulation mechanism for a double-layer co-extrusion plastic extruder. Background Art

[0002] In plastic extrusion molding equipment, the plastic extruder is usually called the main machine, and the subsequent plastic extrusion molding machine supporting it is called the auxiliary machine. After more than 100 years of development, the plastic extruder has evolved from the original single screw to various models such as double screw, multi-screw, and even screwless. The plastic extruder (main machine) can be matched with various plastic molding auxiliary machines such as pipes, films, rods, monofilaments, flat filaments, packing straps, wire meshes, plates, profiles, granulation, and cable coating to form various plastic extrusion molding production lines for producing various plastic products.

[0003] After retrieval, the patent publication number CN211683389U discloses a plastic extruder, including a plastic extruder body, a material storage box, a crushing mechanism, a pipe body, and a preheating mechanism; Plastic extruder body: A support frame is provided on the plastic extruder body; Material storage box: The material storage box is assembled on the support frame and is located above the plastic extruder body. The discharge port of the material storage box is vertically corresponding to the hopper on the plastic extruder body. A baffle is provided at the discharge port of the material storage box. The baffle is assembled on the material storage box through a telescopic mechanism. A fixing strip is provided on the inner cavity surface of the material storage box; Crushing mechanism: The crushing mechanism is assembled in the material storage box; This plastic extruder can crush and preheat the plastic before processing, improving the processing efficiency and the processing quality of the plastic. In the existing technology, although a certain plastic extrusion effect can be achieved during use, the defects are: The existing plastic extruder lacks the problems of pressure regulation and multi-functional plastic spraying. In view of this, we propose a pressure regulation mechanism for a double-layer co-extrusion plastic extruder to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to propose a pressure regulation mechanism for a double-layer co-extrusion plastic extruder in view of the problems in the background art.

[0005] The technical solution of the utility model: A pressure regulation mechanism for a double-layer co-extrusion plastic extruder includes a box body, a mounting frame, a three-way valve, a first branch pipe, and a second branch pipe. An mounting frame is arranged on the upper end of the box body. A main pipe is arranged on one side of the mounting frame. A three-way valve is arranged on one side of the main pipe. A first branch pipe is arranged on one side of the three-way valve. A second branch pipe is arranged on one side of the first branch pipe.

[0006] When using the pressure control mechanism of the double-layer co-extrusion plastic extruder in this solution, the plastic to be supplied is fed into the collection tank. The booster on one side is used to push the material into the main pipe. By changing the flow rate of the three-way valve, the material can pass through either branch pipe one or branch pipe two. Branch pipe one can use a pressure regulator to adjust the pressure of the plastic ejected from nozzle one. Branch pipe two can ensure that the pressure of the material ejected from nozzle two is stable and will not change with the pressure fluctuation at the source.

[0007] Preferably, a base is provided at the lower end of the housing, and side doors are provided on both sides of the housing. The base can increase the stability of the device during operation and reduce a certain amount of noise transmission.

[0008] Preferably, the upper end of the mounting bracket is provided with a collection tank, and a booster is provided on one side of the collection tank. The collection tank is connected to the main pipeline. The collection tank contains plastic material. The booster on one side pressurizes the plastic material and sends it into the main pipeline. The pressure is adjusted by a three-way valve to select whether to pass through branch pipe one or branch pipe two according to actual needs. The specific pressurization process is a common structure in the industry and will not be explained in detail.

[0009] Preferably, a nozzle is provided on one side of the branch pipe, and a pressure regulator is installed on the upper end of the nozzle. The nozzle can spray plastic from inside the main pipe, and the pressure regulator can adjust the flow rate of the plastic inside the branch pipe to a certain extent, so that the plastic sprayed out by the nozzle has a pressure regulating effect.

[0010] Preferably, the second branch pipe is provided with an installation plate inside, a motor is fixedly installed on one side of the installation plate, and a spiral lifting cylinder is rotatably installed between the installation plates.

[0011] Preferably, a nozzle is provided on one side of the second branch pipe. When the material inside the second branch pipe is sprayed out from the nozzle, it has a pressure-stabilized spraying effect. The spraying pressure will not change due to changes in the pressure inside the main pipe. This is mainly due to the rotatable spiral riser provided inside the second branch pipe, which ensures that the plastic passing through the second branch pipe is affected by the spiral riser and is stably sprayed out from the nozzle.

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

[0013] 1. This device can select the plastic spraying effect using either branch pipe one or branch pipe two, and branch pipe one can achieve pressure regulation;

[0014] 2. The second branch pipe in this device can achieve a stable pressure effect by using a spiral lifting cylinder, and the plastic sprayed from the second nozzle has a stable pressure effect. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the spiral lifting cylinder of this utility model.

[0017] Figure label:

[0018] 1. Housing; 2. Base; 3. Main pipe; 4. Mounting bracket; 5. Booster; 6. Collection tank; 7. Three-way valve; 8. Branch pipe one; 9. Spiral lift cylinder; 10. Pressure regulator; 11. Nozzle two; 12. Nozzle one; 13. Branch pipe two; 14. Motor; 15. Mounting plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1:

[0022] like Figures 1 to 2 As shown, the pressure control mechanism for a double-layer co-extrusion plastic extruder proposed in this utility model includes a housing 1, a mounting frame 4, a three-way valve 7, a first branch pipe 8, and a second branch pipe 13. A base 2 is provided at the lower end of the housing 1, and side doors are provided on both sides of the housing 1. The base 2 can increase the stability of the device during operation and reduce a certain amount of noise transmission. A mounting frame 4 is provided at the upper end of the housing 1, and a main pipe 3 is provided on one side of the mounting frame 4. A collection tank 6 is provided at the upper end of the mounting frame 4, and a pressure booster 5 is provided on one side of the collection tank 6. The collection tank 6 is connected to the main pipe 3. The collection tank 6 contains plastic material, which is pressurized by the pressure booster 5 and introduced into the main pipe 3. The three-way valve 7 can be adjusted to select whether to pass through the first branch pipe 8 or the second branch pipe 13 according to actual needs. The specific pressurization process is a common structure in the industry and will not be explained in detail. A three-way valve 7 is provided on one side of the main pipe 3, and a first branch pipe 8 is provided on one side of the three-way valve 7.

[0023] In this embodiment: the device can use either branch pipe 8 or branch pipe 13 to select the effect of plastic spraying, and branch pipe 8 can realize pressure regulation.

[0024] Example 2:

[0025] like Figures 1 to 2As shown, the pressure control mechanism for the double-layer co-extrusion plastic extruder proposed in this utility model, compared with Embodiment 1, further includes: a nozzle 12 is provided on one side of the first branch pipe 8, and a pressure regulator 10 is installed on the upper end of one side of the nozzle 12. The nozzle 12 can spray the plastic inside the main pipe 3, and the pressure regulator 10 can adjust the flow rate of the plastic inside the first branch pipe 8 to a certain extent, so that the plastic sprayed out by the nozzle 12 has a pressure regulating effect. A second branch pipe 13 is provided on one side of the first branch pipe 8, and an installation plate is provided inside the second branch pipe 13. 15. A motor 14 is fixedly installed on one side of the mounting plate 15. A spiral lifting cylinder 9 is rotatably installed between the mounting plates 15. A nozzle 2 11 is provided on one side of the branch pipe 2 13. When the material inside the branch pipe 2 13 is sprayed out from the nozzle 2 11, it has a pressure-stabilized spraying effect. Its spraying pressure will not change due to the pressure change inside the main pipe 3. This is mainly due to the rotatable spiral lifting cylinder 9 installed inside the branch pipe 2 13. This ensures that no matter what pressure the plastic passes through the branch pipe 2 13, it will be affected by the spiral lifting cylinder 9 and be stably sprayed out from the nozzle 2 11.

[0026] In this embodiment, the second branch pipe 13 in this device can achieve a stable pressure effect by using the spiral lifting cylinder 9, and the plastic sprayed from the second nozzle 11 has a stable pressure effect.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pressure regulating mechanism for a double-layer co-extrusion plastic extruder, comprising a housing (1), a mounting frame (4), a three-way valve (7), a first branch pipe (8), and a second branch pipe (13), characterized in that: The upper end of the box (1) is provided with an installation frame (4), a main pipe (3) is provided on one side of the installation frame (4), a three-way valve (7) is provided on one side of the main pipe (3), a branch pipe (8) is provided on one side of the three-way valve (7), and a branch pipe (13) is provided on one side of the branch pipe (8).

2. The pressure control mechanism for a double-layer co-extrusion plastic extruder according to claim 1, characterized in that: The lower end of the box (1) is provided with a base (2), and the sides of the box (1) are provided with side doors.

3. The pressure control mechanism for a double-layer co-extrusion plastic extruder according to claim 1, characterized in that: The mounting bracket (4) is provided with a collection trough (6) at its upper end, and a booster (5) is provided on one side of the collection trough (6). The collection trough (6) is connected to the main pipeline (3).

4. The pressure regulating mechanism for a double-layer co-extrusion plastic extruder according to claim 1, characterized in that: A nozzle (12) is provided on one side of the first branch pipe (8), and a pressure regulator (10) is installed on the upper end of one side of the nozzle (12).

5. The pressure control mechanism for a double-layer co-extrusion plastic extruder according to claim 1, characterized in that: The second branch pipe (13) is provided with an installation plate (15), a motor (14) is fixedly installed on one side of the installation plate (15), and a spiral lifting cylinder (9) is rotatably installed between the installation plates (15).

6. The pressure control mechanism for a double-layer co-extrusion plastic extruder according to claim 1, characterized in that: A nozzle 2 (11) is provided on one side of the second branch pipe (13).

Images