High-pressure continuous extrusion device for PVC (polyvinyl chloride) profiles

Abstract

The utility model discloses a PVC (polyvinyl chloride) profile high-pressure continuous extrusion device which comprises a support, a material extrusion mechanism is arranged on the support, a feed port of the material extrusion mechanism is connected with a storage bin through a pipeline, the material extrusion mechanism comprises an extrusion barrel, the inner wall of the extrusion barrel is connected with a first piston in a sliding manner, and the inner wall of the extrusion barrel is connected with a second piston in a sliding manner. A barrel cover is installed at the opening end of the material extruding barrel, and a first discharging opening and a second discharging opening are formed in the top and the bottom of the left side of the material extruding barrel. According to the utility model, the first discharge port, the first feed port, the second discharge port and the second feed port are respectively formed in the two sides of the extrusion barrel, and materials are extruded in the reciprocating motion process of the first piston and enter the extrusion barrel synchronously, so that continuous feeding is realized, and the continuity of the extruded materials is ensured; and when the materials are extruded, the second piston extrudes the materials in the storage bin, so that the extrusion pressure of the materials is large, and the high-pressure extrusion of the materials is ensured.

Description

Technical Field

[0001] This utility model relates to the field of PVC profile processing technology, specifically a high-pressure continuous extrusion device for PVC profiles. Background Technology

[0002] PVC profiles are industrial and household PVC products made by extruding PVC resin with various functional additives at high temperatures. The continuity of PVC profile extrusion mainly depends on whether the feeding is continuous. Currently, feeding is usually done by a syringe. The piston that extrudes the molten material only has the function of extruding material in a single stroke. The return stroke of the piston is used to draw in material, so the feeding is not continuous. Utility Model Content

[0003] The purpose of this utility model is to provide a high-pressure continuous extrusion device for PVC profiles. By setting a first discharge port, a first feed port, a second discharge port, and a second feed port, material is extruded during the reciprocating motion of the first piston, and the material enters the extrusion cylinder synchronously, thereby realizing continuous feeding and ensuring the continuity of extruded material.

[0004] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0005] A high-pressure continuous extrusion device for PVC profiles includes a support frame, a bottom support plate, a support column welded to the top of the bottom support plate, a top support plate welded to the top of the support column, a material extrusion mechanism mounted on the support frame, a material storage silo connected to the inlet of the material extrusion mechanism via a pipe, the material extrusion mechanism including an extrusion cylinder, a first piston slidably connected to the inner wall of the extrusion cylinder, a cylinder cover installed at the open end of the extrusion cylinder, a first discharge port and a second discharge port on the top and bottom left side of the extrusion cylinder, a first inlet port and a second inlet port on the top and bottom right side of the extrusion cylinder, and a solenoid valve installed on the first discharge port, the second discharge port, the first inlet port, and the second inlet port.

[0006] Preferably, a piston rod is fixedly connected to the top of the first piston, a first electric push rod is connected to the top of the piston rod, and a bracket is connected to the top of the first electric push rod.

[0007] The first discharge port and the second discharge port are connected to a U-shaped discharge pipe. The outlet of the U-shaped discharge pipe is connected to an extrusion pipe. The first feed port and the second feed port are connected to a U-shaped feed pipe. The feed port of the U-shaped feed pipe is connected to the discharge port of the storage silo through a conduit.

[0008] Preferably, the top of the cylinder cover has an integral extension ring, and a rubber sleeve is bonded inside the extension ring, the rubber sleeve elastically clamping the piston rod.

[0009] Preferably, a first support connecting seat is welded to the bottom of the top support plate, a first electric push rod is inserted into the inner wall of the first support connecting seat, and the first electric push rod and the first support connecting seat are fixed together by bolts;

[0010] The top of the piston rod is fixedly connected to a second support connector, the bottom end of the first electric push rod is inserted into the second support connector, and the second support connector and the first electric push rod are fixed together by bolts.

[0011] Preferably, a second piston is slidably connected to the inner wall of the storage bin, a second electric push rod is connected to the top of the second piston, and a top support plate is connected to the top of the second electric push rod.

[0012] Preferably, a third support connector is welded to the bottom of the top support plate, the top of the second electric push rod is inserted into the third support connector, and the third support connector and the second electric push rod are fixed together by bolts.

[0013] The top of the second piston is fixedly connected to a fourth support connector, the bottom end of the second electric push rod is inserted into the fourth support connector, and the fourth support connector and the second electric push rod are fixed together by bolts.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention provides a first discharge port, a first inlet port, a second discharge port, and a second inlet port on both sides of the extrusion cylinder. During the reciprocating motion of the first piston, material is extruded and enters the extrusion cylinder simultaneously, thus achieving continuous feeding and ensuring the continuity of the extruded material. In addition, while the material is being extruded, the second piston also extrudes the material in the storage bin, resulting in high material extrusion pressure and ensuring high-pressure extrusion of the material. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the present invention;

[0017] Figure 2 Provided by this utility model Figure 1 A magnified view of a portion of the image;

[0018] Figure 3 Provided by this utility model Figure 1 A sectional view;

[0019] Figure 4 This is a top view of the cylindrical cover provided by this utility model.

[0020] In the diagram: Bottom support plate 1, support column 2, top support plate 3, first support connecting seat 4, third support connecting seat 5, first electric push rod 6, second electric push rod 7, second support connecting seat 8, fourth support connecting seat 9, piston rod 10, storage bin 11, extrusion cylinder 12, first discharge port 121, first inlet port 122, second discharge port 123, second inlet port 124, U-shaped feed pipe 13, U-shaped discharge pipe 14, extrusion pipe 15, cylinder cover 16, extension ring 161, rubber sleeve 1611, first piston 17, second piston 18. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0022] This utility model provides a high-pressure continuous extrusion device for PVC profiles. Please refer to [link / reference]. Figure 1-4 The system includes a support frame, which includes a bottom support plate 1. A support column 2 is welded to the top of the bottom support plate 1, and a top support plate 3 is welded to the top of the support column 2. A material extrusion mechanism is provided on the support frame. The inlet of the material extrusion mechanism is connected to a storage bin 11 through a pipe. The material extrusion mechanism includes an extrusion cylinder 12. A first piston 17 is slidably connected to the inner wall of the extrusion cylinder 12. A piston rod 10 is fixedly connected to the top of the first piston 17. A cylinder cover 16 is installed at the open end of the extrusion cylinder 12. The top and bottom left sides of the extrusion cylinder 12 have a first discharge port 121 and a second discharge port 123. The top and bottom right sides of the extrusion cylinder 12 have a first inlet port 122 and a second inlet port 124. Solenoid valves are installed on the first discharge port 121, the second discharge port 123, the first inlet port 122, and the second inlet port 124.

[0023] The top end of the piston rod 10 is connected to a first electric push rod 6. Specifically, the top end of the piston rod 10 is fixedly connected to a second support connecting seat 8. The bottom end of the first electric push rod 6 is inserted into the second support connecting seat 8, and the second support connecting seat 8 and the first electric push rod 6 are fixed together by bolts. The top end of the first electric push rod 6 is connected to a bracket. Specifically, the bottom of the top support plate 3 is welded to a first support connecting seat 4. The first electric push rod 6 is inserted into the inner wall of the first support connecting seat 4, and the first electric push rod 6 and the first support connecting seat 4 are fixed together by bolts.

[0024] The first discharge port 121 and the second discharge port 123 are connected to the U-shaped discharge pipe 14. The outlet of the U-shaped discharge pipe 14 is connected to the extrusion pipe 15. The first feed port 122 and the second feed port 124 are connected to the U-shaped feed pipe 13. The feed port of the U-shaped feed pipe 13 is connected to the discharge port of the storage bin 11 through a conduit.

[0025] The top of the cylinder cover 16 has an integral extension ring 161, and a rubber sleeve 1611 is bonded inside the extension ring 161. The rubber sleeve 1611 elastically clamps the piston rod 10.

[0026] A second piston 18 is slidably connected to the inner wall of the storage bin 11. A second electric push rod 7 is connected to the top of the second piston 18. Specifically, a fourth support connecting seat 9 is fixedly connected to the top of the second piston 18. The bottom end of the second electric push rod 7 is inserted into the fourth support connecting seat 9, and the fourth support connecting seat 9 and the second electric push rod 7 are fixed together by bolts. The top of the second electric push rod 7 is connected to a top support plate 3. Specifically, a third support connecting seat 5 is welded to the bottom of the top support plate 3. The top of the second electric push rod 7 is inserted into the third support connecting seat 5, and the third support connecting seat 5 and the second electric push rod 7 are fixed together by bolts.

[0027] The working principle of this utility model is as follows:

[0028] Open the solenoid valve on the first feed port 122, close the solenoid valve on the first discharge port 121, open the solenoid valve on the second discharge port 123, and open the solenoid valve on the second feed port 124; the first electric push rod 6 drives the piston rod 10 to descend, and the piston rod 10 drives the first piston 17 to descend, extruding the lower cavity of the extrusion cylinder 12 (the cavity below the first piston 17) from the second discharge port 123 into the U-shaped discharge pipe 14 and feeding through the extrusion pipe 15; at the same time, the material in the storage bin 11 enters the upper cavity of the extrusion cylinder 12 through the first feed port 122.

[0029] When the first piston 17 reaches its lowest point, the solenoid valve on the first feed port 122 is closed, the solenoid valve on the first discharge port 121 is opened, the solenoid valve on the second discharge port 123 is closed, and the solenoid valve on the second feed port 124 is opened. The first electric push rod 6 retracts, driving the piston rod 10 and the first piston 17 to rise, extruding the material in the upper cavity through the first discharge port 121 into the U-shaped discharge pipe 14 and feeding it through the extrusion pipe 15. Simultaneously, the material in the storage bin 11 enters the extrusion cylinder 12 through the second feed port 124. Thus, the first piston 17 can feed material during its reciprocating motion. At the same time, during the movement of the first piston 17, the second electric push rod 7 extends synchronously, driving the second piston 18 to descend, thereby lowering the material in the storage bin 11, allowing the material to enter the extrusion cylinder 12 more smoothly and under high pressure.

[0030] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A high-pressure continuous extrusion device for PVC profiles, comprising a support frame, the support frame including a bottom support plate (1), a support column (2) welded to the top of the bottom support plate (1), a top support plate (3) welded to the top of the support column (2), a material extrusion mechanism being provided on the support frame, the inlet of the material extrusion mechanism being connected to a storage silo (11) via a pipe, characterized in that: The material extrusion mechanism includes an extrusion cylinder (12), a first piston (17) is slidably connected to the inner wall of the extrusion cylinder (12), a cylinder cover (16) is installed at the open end of the extrusion cylinder (12), a first discharge port (121) and a second discharge port (123) are located on the top and bottom left side of the extrusion cylinder (12), and a first feed port (122) and a second feed port (124) are located on the top and bottom right side of the extrusion cylinder (12). Solenoid valves are installed on the first discharge port (121), the second discharge port (123), the first feed port (122), and the second feed port (124).

2. The high-pressure continuous extrusion apparatus for PVC profiles according to claim 1, characterized in that, The top of the first piston (17) is fixedly connected to a piston rod (10), the top of the piston rod (10) is connected to a first electric push rod (6), and the top of the first electric push rod (6) is connected to a bracket. The first discharge port (121) and the second discharge port (123) are connected to the U-shaped discharge pipe (14). The outlet of the U-shaped discharge pipe (14) is connected to the extrusion pipe (15). The first feed port (122) and the second feed port (124) are connected to the U-shaped feed pipe (13). The feed port of the U-shaped feed pipe (13) is connected to the discharge port of the storage bin (11) through a conduit.

3. The high-pressure continuous extrusion apparatus for PVC profiles according to claim 2, characterized in that, The top of the cylinder cover (16) has an integral extension ring (161), and a rubber sleeve (1611) is bonded inside the extension ring (161). The rubber sleeve (1611) elastically clamps the piston rod (10).

4. The high-pressure continuous extrusion apparatus for PVC profiles according to claim 2, characterized in that, The bottom of the top support plate (3) is welded with a first support connecting seat (4), and a first electric push rod (6) is inserted into the inner wall of the first support connecting seat (4). The first electric push rod (6) and the first support connecting seat (4) are fixed together by bolts. The top of the piston rod (10) is fixedly connected to a second support connecting seat (8), the bottom end of the first electric push rod (6) is inserted into the second support connecting seat (8), and the second support connecting seat (8) and the first electric push rod (6) are fixed together by bolts.

5. A high-pressure continuous extrusion apparatus for PVC profiles according to claim 4, characterized in that, The inner wall of the storage bin (11) is slidably connected to a second piston (18), and the top of the second piston (18) is connected to a second electric push rod (7), and the top of the second electric push rod (7) is connected to a top support plate (3).

6. The high-pressure continuous extrusion apparatus for PVC profiles according to claim 5, characterized in that, The bottom of the top support plate (3) is welded with a third support connecting seat (5), the top of the second electric push rod (7) is inserted into the third support connecting seat (5), and the third support connecting seat (5) and the second electric push rod (7) are fixed together by bolts. The top of the second piston (18) is fixedly connected to the fourth support connecting seat (9), the bottom end of the second electric push rod (7) is inserted into the fourth support connecting seat (9), and the fourth support connecting seat (9) and the second electric push rod (7) are fixed together by bolts.

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