Extrusion head structure of fluorinated ethylene propylene resin extruder

Abstract

The utility model belongs to the field of extrusion head structures, and particularly relates to an extrusion head structure of a fluorinated ethylene-propylene resin extruder, which comprises an extruder barrel, a plurality of fixing rods are fixedly connected to the inner wall of the extruder barrel, a plug is fixedly connected among the fixing rods, a pressure regulating sleeve is slidably connected to the inner side of the extruder barrel, and the pressure regulating sleeve is fixedly connected with the extruder barrel. And the threaded part of the pressure adjusting sleeve is connected with an inner threaded sleeve through threads, the inner threaded sleeve abuts against the extruder barrel, and the interior of the inner threaded sleeve is slidably connected with a convex block. According to the utility model, the plug fixed by the plurality of fixing rods is arranged on the inner side of the extruder barrel, the pressure regulating sleeve is arranged at the opening of the extruder barrel, and the position of the regulating sleeve on the extruder barrel can be regulated by utilizing the relative thread movement between the internal thread sleeve and the thread part of the pressure regulating sleeve; therefore, the gap between the plug and the pressure regulating sleeve is controlled, and the purpose of regulating the discharge pressure of the extruder barrel is achieved.

Description

Technical Field

[0001] The utility model relates to the field of extrusion head structures, in particular to an extrusion head structure of a polyperfluoroethylene-propylene resin extruder. Background Art

[0002] Fluorinated ethylene propylene (also known as FEP) is a special high temperature plastic with excellent chemical resistance, electrical insulation and low friction coefficient. In order to extrude FEP resin, an extruder is usually required. FEP resin extruders are like other plastic extruders, such as the utility model patent with authorization announcement number CN108136645B, which proposes an extruder having a barrel extending from a feed inlet end to an extruder outlet end. The barrel has an inner surface, an outer surface and a wall thickness between the inner surface and the outer surface. The extruder also has at least one heating component located on the barrel; a screw drive motor drivingly connected to a screw rotatably mounted in the barrel, wherein the screw rotates at different revolutions per minute (RPM); and a controller operably connected to the screw drive motor to adjust the RPM of the screw based on the temperature of the material passing through the barrel and / or extruded from the barrel.

[0003] However, when the extruder head structure of the existing extruder is discharging materials, the pressure of the discharging materials is constant. When there is residual material inside the extruder head structure, the discharging of materials will be affected. Therefore, it is necessary to improve it. Utility Model Content

[0004] The utility model aims to provide an extrusion head structure of a fluoroethylene propylene resin extruder, which solves the problem that when the extrusion head structure of the existing extruder discharges materials, the discharge pressure is constant, and when there is residual material inside the extrusion head structure, the discharge is affected.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an extrusion head structure of a polyperfluoroethylene propylene resin extruder, comprising an extruder barrel, the inner wall of the extruder barrel is fixedly connected with a plurality of fixing rods, and a plug is fixedly connected between the plurality of fixing rods, the inner side of the extruder barrel is slidably connected with a pressure regulating sleeve, the threaded portion of the pressure regulating sleeve is threadedly connected with an internal threaded sleeve, and the internal threaded sleeve is in conflict with the extruder barrel, the inner part of the internal threaded sleeve is slidably connected with a convex block, the end of the convex block away from the internal threaded sleeve is fixedly connected with an insert block, the outer side of the extruder barrel is fixedly connected with a mounting seat, the insert block is plugged with the mounting seat, the inner part of the mounting seat is fixedly connected with an inner cylinder, the inner cylinder is slidably connected with the insert block, the inner wall of the inner cylinder is slidably connected with a locking pin, and the locking pin is plugged with the insert block.

[0006] Preferably, a sealing ring is embedded in the outer side of the pressure regulating sleeve, the sealing ring contacts the inner wall of the extruder barrel, a guide column is fixedly connected to the boss of the pressure regulating sleeve, and the guide column is slidably connected to the internal threaded sleeve. The sealing ring can increase the sealing between the pressure regulating sleeve and the extruder barrel, and the guide column can guide the movement of the pressure regulating sleeve.

[0007] Preferably, a fixing ring is fixedly connected to the inner side of the inner cylinder, an adjusting rod is installed inside the fixing ring through a bearing, an adjusting sleeve is threadedly connected to the outer side of the threaded portion of the adjusting rod, a push block is fixedly connected to the end of the adjusting sleeve, and the push block abuts against a locking pin. The push block can be caused to move laterally through the relative threaded movement between the adjusting rod and the adjusting sleeve.

[0008] Preferably, a retaining ring is fixedly connected to the middle section of the locking pin, a spring is sleeved outside the locking pin, one end of the spring is fixedly connected to the retaining ring, and the other end of the spring is fixedly connected to the inner surface of the inner cylinder. The retaining ring can be used to apply the elastic force of the spring to the locking pin.

[0009] Preferably, one end of the adjusting rod away from the adjusting sleeve is fixedly connected with a knob, and the knob is made of plastic. The setting of the knob facilitates the rotation of the adjusting rod.

[0010] Preferably, the inner wall of the inner cylinder is fixedly connected with a guide groove, the outer side of the push block is fixedly connected with a guide rod, and the guide rod is slidably connected with the guide groove. The setting of the guide groove and the guide rod has a guiding effect on the push block.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model arranges a plug fixed by a plurality of fixing rods on the inner side of the extruder barrel, and then arranges a pressure regulating sleeve at the opening of the extruder barrel, wherein the position of the regulating sleeve in the extruder barrel can be adjusted by utilizing the relative threaded movement between the internal threaded sleeve and the threaded portion of the pressure regulating sleeve, thereby controlling the gap between the plug and the pressure regulating sleeve, and achieving the purpose of adjusting the discharge pressure of the extruder barrel.

[0013] 2. The utility model provides a convex block that rotates relatively to the internal threaded sleeve, and an insert block is provided at the end of the convex block. The insert block can be inserted into a mounting seat on the outer side of the extruder barrel, and then locked by a locking pin in the mounting seat. In this way, the pressure regulating sleeve and the components on the pressure regulating sleeve can be disassembled and assembled on the extruder barrel only by controlling the clutch between the locking pin and the insert block. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0015] Figure 2For the utility model Figure 1 A front cross-sectional view of

[0016] Figure 3 For the utility model Figure 2 A magnified view of the structure of part A;

[0017] Figure 4 For the utility model Figure 1 A three-dimensional diagram of the local structure.

[0018] In the figure: 1. extruder barrel; 2. fixing rod; 3. plug; 4. pressure regulating sleeve; 5. internal thread sleeve; 6. sealing ring; 7. guide column; 8. embossed block; 9. insert block; 10. mounting seat; 11. inner cylinder; 12. locking pin; 13. retaining ring; 14. spring; 15. fixing ring; 16. adjusting rod; 17. adjusting sleeve; 18. push block; 19. guide groove; 20. guide rod; 21. knob. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 , Figure 2 , Figure 4 , an extruder head structure of a polyperfluoroethylene propylene resin extruder, comprising an extruder barrel 1, a plurality of fixed rods 2 are fixedly connected to the inner wall of the extruder barrel 1, and a plug 3 is fixedly connected between the plurality of fixed rods 2, a pressure regulating sleeve 4 is slidably connected to the inner side of the extruder barrel 1, a sealing ring 6 is embedded in the outer side of the pressure regulating sleeve 4, the sealing ring 6 contacts the inner wall of the extruder barrel 1, a guide column 7 is fixedly connected to the boss of the pressure regulating sleeve 4, and the guide column 7 is slidably connected to the internal thread sleeve 5. The sealing ring 6 can increase the sealing between the pressure regulating sleeve 4 and the extruder barrel 1, and the guide column 7 can guide the movement of the pressure regulating sleeve 4, the threaded portion of the pressure regulating sleeve 4 is threadedly connected to the internal thread sleeve 5, and the internal thread sleeve 5 contacts the extruder barrel 1.

[0021] See also Figure 2 , Figure 3, a convex block 8 is slidably connected inside the internal threaded sleeve 5, and an insert block 9 is fixedly connected to the end of the convex block 8 away from the internal threaded sleeve 5. A mounting seat 10 is fixedly connected to the outside of the extruder barrel 1, and the insert block 9 is plugged into the mounting seat 10. An inner cylinder 11 is fixedly connected inside the mounting seat 10, and the inner cylinder 11 is slidably connected to the insert block 9. A locking pin 12 is slidably connected to the inner wall of the inner cylinder 11, and the locking pin 12 is plugged into the insert block 9. A fixing ring 15 is fixedly connected to the inside of the inner cylinder 11, and an adjusting rod 16 is installed inside the fixing ring 15 through a bearing. An adjusting sleeve 17 is threadedly connected to the outside of the threaded part of the adjusting rod 16, and a push block 18 is fixedly connected to the end of the adjusting sleeve 17, and the push block 18 is in conflict with the locking pin 12. The push block 18 can be caused to move laterally through the relative threaded movement between the adjusting rod 16 and the adjusting sleeve 17.

[0022] See also Figure 3 The middle section of the pin body of the locking pin 12 is fixedly connected with a retaining ring 13, and a spring 14 is sleeved on the outer side of the pin body of the locking pin 12. One end of the spring 14 is fixedly connected to the retaining ring 13, and the other end of the spring 14 is fixedly connected to the inner surface of the inner cylinder 11. The retaining ring 13 can be used to apply the elastic force of the spring 14 to the locking pin 12. The end of the adjusting rod 16 away from the adjusting sleeve 17 is fixedly connected with a knob 21, and the knob 21 is made of plastic. The setting of the knob 21 facilitates the rotation of the adjusting rod 16. The inner wall of the inner cylinder 11 is fixedly connected with a guide groove 19, and the outer side of the push block 18 is fixedly connected with a guide rod 20, and the guide rod 20 is slidably connected to the guide groove 19. The setting of the guide groove 19 and the guide rod 20 has a guiding effect on the push block 18.

[0023] The specific implementation process of the utility model is as follows: when in use, first insert the pressure regulating sleeve 4 into the extruder barrel 1 until the internal thread sleeve 5 contacts the extruder barrel 1, and at this time, the plug block 9 at the end of the convex block 8 on the internal thread sleeve 5 is also inserted into the mounting seat 10, and then the adjusting rod 16 is rotated by the knob 21, and the adjusting rod 16 moves relative to the adjusting sleeve 17 through the relative thread movement, so that the push block 18 moves horizontally, and the push block 18 pushes the locking pin 12 outward until it is inserted into the plug block 9, so that the pressure regulating sleeve 4 and the components on the pressure regulating sleeve 4 are installed on the extruder barrel 1. When the material of the extruder barrel 1 is extruded, it can be discharged from the gap between the plug 3 and the pressure regulating sleeve 4, and by rotating the internal thread sleeve 5, the internal thread sleeve 5 moves relative to the pressure regulating sleeve 4 through the relative thread movement, and under the guidance of the guide column 7, the position of the pressure regulating sleeve 4 in the extruder barrel 1 is adjusted, thereby controlling the gap between the plug 3 and the pressure regulating sleeve 4, so as to achieve the purpose of adjusting the discharge pressure of the extruder barrel 1.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An extrusion head structure of a fluoroethylene-propylene resin extruder, comprising an extruder barrel (1), characterized in that: The inner wall of the extruder barrel (1) is fixedly connected to a plurality of fixed rods (2), and a plug (3) is fixedly connected between the plurality of fixed rods (2). The inner side of the extruder barrel (1) is slidably connected to a pressure regulating sleeve (4), the threaded portion of the pressure regulating sleeve (4) is threadedly connected to an internal threaded sleeve (5), and the internal threaded sleeve (5) contacts the extruder barrel (1). The inner side of the internal threaded sleeve (5) is slidably connected to a convex block (8), and an end of the convex block (8) away from the internal threaded sleeve (5) is fixedly connected to an insert block (9). The outer side of the extruder barrel (1) is fixedly connected to a mounting seat (10), and the insert block (9) is plugged into the mounting seat (10). The inner side of the mounting seat (10) is fixedly connected to an inner barrel (11), and the inner barrel (11) is slidably connected to the insert block (9). The inner wall of the inner barrel (11) is slidably connected to a locking pin (12), and the locking pin (12) is plugged into the insert block (9).

2. The extrusion head structure of a fluoroethylene-propylene resin extruder according to claim 1, characterized in that: A sealing ring (6) is embedded on the outer side of the pressure regulating sleeve (4), and the sealing ring (6) contacts the inner wall of the extruder barrel (1). A guide column (7) is fixedly connected to the boss of the pressure regulating sleeve (4), and the guide column (7) is slidably connected to the internal threaded sleeve (5).

3. The extrusion head structure of a fluoroethylene-propylene resin extruder according to claim 1, characterized in that: A fixing ring (15) is fixedly connected to the inner side of the inner cylinder (11); an adjusting rod (16) is installed inside the fixing ring (15) via a bearing; an adjusting sleeve (17) is threadedly connected to the outer side of the threaded portion of the adjusting rod (16); a push block (18) is fixedly connected to the end of the adjusting sleeve (17), and the push block (18) contacts the locking pin (12).

4. The extrusion head structure of a fluoroethylene-propylene resin extruder according to claim 1, characterized in that: A retaining ring (13) is fixedly connected to the middle section of the pin body of the locking pin (12), a spring (14) is sleeved on the outer side of the pin body of the locking pin (12), one end of the spring (14) is fixedly connected to the retaining ring (13), and the other end of the spring (14) is fixedly connected to the inner surface of the inner cylinder (11).

5. The extrusion head structure of a fluoroethylene-propylene resin extruder according to claim 3, characterized in that: One end of the adjusting rod (16) away from the adjusting sleeve (17) is fixedly connected to a knob (21), and the knob (21) is made of plastic.

6. The extrusion head structure of a fluoroethylene-propylene resin extruder according to claim 3, characterized in that: The inner wall of the inner cylinder (11) is fixedly connected with a guide groove (19), the outer side of the push block (18) is fixedly connected with a guide rod (20), and the guide rod (20) is slidably connected with the guide groove (19).

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