Double-screw extruder for plastic production

Abstract

The utility model provides a twin-screw extruder for plastic production, which relates to the technical field of plastic production, and comprises an extruder main body, a feeding frame is arranged at the upper end of the extruder main body, a filtering device is arranged in the feeding frame, and the device is provided with a filtering plate, a driving device, a first sliding block and a second sliding block. In the using process of the whole device, due to the fact that the first sliding block is movably arranged in the movable through groove formed in one side of the feeding frame and slides in the vertical direction along the movable through groove, when the driving device conducts reciprocating motion on the filter plate in the vertical direction, raw materials on the filter plate are filtered, and due to the fact that the filter plate is obliquely arranged, the filter plate is not prone to falling off. And impurities can be discharged from the position of the movable through groove in the moving process of the filter plate, filtering of the raw materials and collection of the impurities are completed, and the overall plastic production quality is improved to a certain degree.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic production, in particular to a twin-screw extruder for plastic production. Background Art

[0002] Plastics are mainly made of synthetic resins or natural polymer compounds as the main raw materials. They are processed and manufactured into materials with various shapes, properties and uses. In the existing plastic production process, a twin-screw extruder is needed. A twin-screw extruder is a device that utilizes two screws rotating in parallel to melt and continuously extrude solid materials through a specific process. It is particularly suitable for plastic production. Through the continuous rotation of the two screws, the evenly mixed plastic melt is extruded by the extruder mold and goes through the cooling and molding process to finally obtain the desired plastic product.

[0003] In the existing twin-screw extruder for plastic production, it usually includes an extruder body, and a feed port is usually set on the upper part of the extruder body. During use, plastic raw materials are usually added into the interior of the extruder body through the feed port, and the plastic raw materials are processed by the extruder body. The processing includes heating, melting and extrusion, and the extrusion is usually performed by two screws. However, in the existing processing process, since one type of plastic raw material is polyester, before being sent to the extruder body for processing, the polyester may be mixed with masterbatch or spotted crushed blocks and chips due to the original mixing. These substances may form larger particles of impurities during the processing process, affecting the overall plastic production quality.

[0004] Therefore, it is necessary to provide a new twin-screw extruder for plastic production to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a twin-screw extruder for plastic production.

[0006] The twin-screw extruder for plastic production provided by the utility model comprises an extruder body, a feed frame is arranged at the upper end of the extruder body, and a filtering device is arranged inside the feed frame;

[0007] The filtering device includes a filter plate, a first sliding block and a second sliding block, the filter plate is arranged at an angle, one side of the filter plate is fixedly connected to one side of the first sliding block, the first sliding block is movably arranged in a movable through groove arranged on one side of the feed frame and slides vertically along the movable through groove, an elastic device is arranged at the bottom of the first sliding block, the side of the filter plate away from the first sliding block is fixedly connected to one side of the second sliding block, the second sliding block is movably arranged in a sliding groove arranged on the inner wall of the feed frame, and a driving device for making the filter plate reciprocate is arranged at the bottom of the filter plate.

[0008] Preferably, the driving device includes a motor, a belt and two pushing components, the bottom of the motor is fixedly connected to a support plate, one side of the support plate is fixedly connected to one side of the extruder body, the output end of the motor is fixedly connected to one side of one of the pushing components, and the two pushing components are connected by the belt.

[0009] Preferably, the pushing assembly includes a fixed plate, a rotating rod and two pushing blocks, one side of the fixed plate is fixedly connected to the output end of the motor, one end of the fixed plate relative to the motor is fixedly connected to one end of the rotating rod, and the adjacent sides of the two pushing plates are fixedly connected to the opposite sides of the rotating rod.

[0010] Preferably, the elastic device includes a connecting plate and two springs, the upper end of the connecting plate is fixedly connected to one side of the first sliding block, the side of the connecting plate away from the first sliding block extends into an installation groove provided on the feeding frame, one end of the connecting plate close to the installation groove is fixedly connected to the upper ends of the two springs, and the side of the two springs away from the connecting plate is fixedly connected to the inner bottom wall of the installation groove.

[0011] Preferably, the cross section of the pushing block is set to be elliptical.

[0012] Preferably, a plurality of heat dissipation holes are provided on one side of the extruder body.

[0013] Preferably, a collecting frame is provided on one side of the feeding frame, and mounting plates are provided on opposite sides of the collecting frame, and the two mounting plates are connected to one side of the feeding frame by a plurality of fixing bolts.

[0014] Compared with the related art, the twin-screw extruder for plastic production provided by the utility model has the following advantages:

[0015] Beneficial effects:

[0016] The device is provided with a filter plate, a driving device, a first sliding block and a second sliding block. During the use of the entire device, since the first sliding block is movably arranged in a movable groove arranged on one side of the feed frame and slides vertically along the movable groove, an elastic device is arranged at the bottom of the first sliding block, and a side of the filter plate away from the first sliding block is fixedly connected to a side of the second sliding block, and the second sliding block is movably arranged in a sliding groove arranged on the inner wall of the feed frame, so that when the driving device makes a vertical reciprocating motion on the filter plate, the raw material on the filter plate is filtered, and since the filter plate is arranged at an angle, impurities will be discharged from the position of the movable groove during the movement of the filter plate, thereby completing the filtering of the raw materials and the collection of impurities, thereby improving the overall quality of plastic production to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a twin-screw extruder for plastic production provided by the utility model;

[0018] Figure 2 A top view of a twin-screw extruder for plastic production provided by the utility model;

[0019] Figure 3 A cross-sectional view of the feed frame provided by the utility model;

[0020] Figure 4 A schematic diagram of a driving device provided by the utility model;

[0021] Figure 5 This is a schematic diagram of another viewing angle of the driving device provided by the utility model.

[0022] Numbers in the figure: 1. Extruder body; 2. Feed frame; 3. Collecting frame; 4. Mounting plate; 5. Fixing bolt; 6. Motor; 7. Belt; 8. Support plate; 9. Heat dissipation hole; 10. Filter plate; 11. Movable through groove; 12. Sliding groove; 13. First sliding block; 14. Second sliding block; 15. Rotating rod; 16. Pushing block; 17. Connecting plate; 18. Spring; 19. Fixed disk. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0024] Please refer to Figure 1-Figure 5 ,in, Figure 1 This is a schematic diagram of the overall structure of a twin-screw extruder for plastic production provided by the utility model; Figure 2 A top view of a twin-screw extruder for plastic production provided by the utility model; Figure 3 A cross-sectional view of the feed frame provided by the utility model; Figure 4 A schematic diagram of a driving device provided by the utility model; Figure 5 This is a schematic diagram of another viewing angle of the driving device provided by the utility model.

[0025] In the specific implementation process, Figure 1-Figure 5 As shown, a twin-screw extruder for plastic production includes an extruder body 1, a feed frame 2 is arranged at the upper end of the extruder body 1, a filter device is arranged inside the feed frame 2, and a plurality of heat dissipation holes 9 are arranged on one side of the extruder body 1;

[0026] The filtering device includes a filter plate 10, a first sliding block 13 and a second sliding block 14. The filter plate 10 is arranged at an angle. One side of the filter plate 10 is fixedly connected to one side of the first sliding block 13. The first sliding block 13 is movably arranged in a movable through groove 11 arranged on one side of the feed frame 2 and slides vertically along the movable through groove 11. A spring device is arranged at the bottom of the first sliding block 13. The side of the filter plate 10 away from the first sliding block 13 is fixedly connected to one side of the second sliding block 14. The second sliding block 14 is movably arranged in a sliding groove 12 arranged on the inner wall of the feed frame 2. A driving device for making the filter plate 10 reciprocate is arranged at the bottom of the filter plate 10.

[0027] In the specific use process, since the first sliding block 13 is movably arranged in the movable through groove 11 arranged on one side of the feed frame 2 and slides vertically along the movable through groove 11, a spring device is arranged at the bottom of the first sliding block 13, and the side of the filter plate 10 away from the first sliding block 13 is fixedly connected to the side of the second sliding block 14, and the second sliding block 14 is movably arranged in the sliding groove 12 arranged on the inner wall of the feed frame 2, so that when the driving device makes a vertical reciprocating motion on the filter plate 10, the raw materials on the filter plate 10 are filtered, and since the filter plate 10 is inclined, impurities will be discharged from the position of the movable through groove 11 during the movement of the filter plate 10, completing the filtration of the raw materials and the collection of impurities, so as to improve the overall quality of plastic production to a certain extent;

[0028] The driving device includes a motor 6, a belt 7 and two pushing components. A support plate 8 is fixedly connected to the bottom of the motor 6. One side of the support plate 8 is fixedly connected to one side of the extruder body 1. The output end of the motor 6 is fixedly connected to one side of one of the pushing components. The two pushing components are connected through the belt 7. The pushing component includes a fixed disk 19, a rotating rod 15 and two pushing blocks 16. One side of the fixed disk 19 is fixedly connected to the output end of the motor 6. One end of the fixed disk 19 relative to the motor 6 is fixedly connected to one end of the rotating rod 15. The adjacent sides of the two pushing plates are fixedly connected to the opposite sides of the rotating rod 15. The cross section of the pushing block 16 is set to be elliptical.

[0029] The specific use of the driving device mentioned above is as follows: first, the motor 6 is started, and one of the fixed disks 19 is driven to rotate by the motor 6. During the rotation of one of the fixed disks 19, the other fixed disk 19 will rotate synchronously due to the transmission of the belt 7. During the rotation of the two fixed disks 19, the two rotating rods 15 will be driven to rotate respectively. The rotation of the two rotating rods 15 realizes the movement of the two push plates located on the outer side walls of the two rotating rods 15. During the above movement, the four push plates will continuously push the filter plate 10 to move upward and away from the filter plate 10, so that the filter plate 10 completes the reciprocating motion, thereby improving the filtering effect of the filter plate 10.

[0030] The elastic device includes a connecting plate 17 and two springs 18. The upper end of the connecting plate 17 is fixedly connected to one side of the first sliding block 13. The side of the connecting plate 17 away from the first sliding block 13 extends into the mounting groove provided on the feeding frame 2. The end of the connecting plate 17 close to the mounting groove is fixedly connected to the upper ends of the two springs 18. The side of the two springs 18 away from the connecting plate 17 is fixedly connected to the inner bottom wall of the mounting groove.

[0031] In the specific use process, during the reciprocating motion of the filter screen, the connecting plate 17 will be continuously driven to reciprocate in the vertical direction. In this process, the spring 18 will be continuously pulled and compressed, so that on the one hand, the vibration effect of the filter plate 10 is improved, and on the other hand, the setting of the connecting plate 17 also has a partition effect to prevent the raw material from leaking from the inside of the feed frame 2;

[0032] A collecting frame 3 is provided on one side of the feeding frame 2, and a mounting plate 4 is provided on the opposite side of the collecting frame 3. The two mounting plates 4 are connected to one side of the feeding frame 2 through a plurality of fixing bolts 5. The collecting frame 3 can be separated from the feeding frame 2 by loosening the fixing bolts 5, so that it is convenient to collect the impurities collected in the collecting frame 3.

[0033] The working principle provided by the utility model is as follows: during the use of the device, the motor 6 is first started, and one of the fixed disks 19 is driven to rotate by the motor 6. During the rotation of one of the fixed disks 19, the other fixed disk 19 will rotate synchronously due to the transmission of the belt 7. During the rotation of the two fixed disks 19, the two rotating rods 15 will be driven to rotate respectively. The rotation of the two rotating rods 15 realizes the movement of the two push plates located on the outer side walls of the two rotating rods 15. During the above movement, the four push plates will continuously push the filter plate 10 to move upward and away from the filter plate 10. During the reciprocating motion of the filter screen, the connecting plate 17 is continuously driven to reciprocate in the vertical direction. During the reciprocating motion of the filter screen, the spring 18 is continuously pulled and compressed, thereby improving the vibration effect of the filter plate 10 on the one hand, and on the other hand, the setting of the connecting plate 17 also serves as a partition to prevent the raw materials from leaking out of the feed frame 2, and the discharged impurities are collected by the collecting frame 3. The collecting frame 3 can be separated from the feed frame 2 by loosening the fixing bolts 5, so that the impurities collected in the collecting frame 3 can be collected conveniently.

[0034] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0035] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A twin-screw extruder for plastic production, characterized in that: It comprises an extruder body (1), a feed frame (2) is arranged at the upper end of the extruder body (1), and a filtering device is arranged inside the feed frame (2); The filtering device comprises a filter plate (10), a first sliding block (13) and a second sliding block (14); the filter plate (10) is arranged in an inclined manner; one side of the filter plate (10) is fixedly connected to one side of the first sliding block (13); the first sliding block (13) is movably arranged in a movable through groove (11) arranged on one side of a feed frame (2) and slides vertically along the movable through groove (11); a spring device is arranged at the bottom of the first sliding block (13); a side of the filter plate (10) away from the first sliding block (13) is fixedly connected to one side of the second sliding block (14); the second sliding block (14) is movably arranged in a sliding groove (12) arranged on the inner wall of the feed frame (2); and a driving device for causing the filter plate (10) to reciprocate is arranged at the bottom of the filter plate (10).

2. The twin-screw extruder for plastic production according to claim 1, characterized in that: The driving device comprises a motor (6), a belt (7) and two pushing components, the bottom of the motor (6) is fixedly connected to a support plate (8), one side of the support plate (8) is fixedly connected to one side of the extruder body (1), the output end of the motor (6) is fixedly connected to one side of one of the pushing components, and the two pushing components are connected via the belt (7).

3. The twin-screw extruder for plastic production according to claim 2, characterized in that: The pushing assembly comprises a fixed plate (19), a rotating rod (15) and two pushing blocks (16); one side of the fixed plate (19) is fixedly connected to the output end of the motor (6); one end of the fixed plate (19) relative to the motor (6) is fixedly connected to one end of the rotating rod (15); and adjacent sides of the two pushing plates are fixedly connected to opposite sides of the rotating rod (15).

4. The twin-screw extruder for plastic production according to claim 3, characterized in that: The elastic device comprises a connecting plate (17) and two springs (18), the upper end of the connecting plate (17) is fixedly connected to one side of the first sliding block (13), the side of the connecting plate (17) away from the first sliding block (13) extends into a mounting groove provided on the feed frame (2), one end of the connecting plate (17) close to the mounting groove is fixedly connected to the upper ends of the two springs (18), and the side of the two springs (18) away from the connecting plate (17) is fixedly connected to the inner bottom wall of the mounting groove.

5. The twin-screw extruder for plastic production according to claim 4, characterized in that: The cross section of the pushing block (16) is arranged to be elliptical.

6. The twin-screw extruder for plastic production according to claim 5, characterized in that: A plurality of heat dissipation holes (9) are provided on one side of the extruder body (1).

7. The twin-screw extruder for plastic production according to claim 6, characterized in that: A collecting frame (3) is provided on one side of the feeding frame (2), and mounting plates (4) are provided on opposite sides of the collecting frame (3). The two mounting plates (4) are connected to one side of the feeding frame (2) via a plurality of fixing bolts (5).

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