Polyester fiber cloth recycling and granulating device

Abstract

The invention relates to the technical field of material recycling, in particular to a polyester fiber cloth recycling and granulating device.A cleaning mechanism is arranged in a shell to clean a first screen and comprises a main shaft, a first rotating disc, a second rotating disc, a plurality of first ejector pins and a plurality of second ejector pins; the main shaft is rotatably installed in the shell through a driving structure, the first ejector pin is in sliding fit with the first rotating disc, the second ejector pin is in sliding fit with the second rotating disc, the ejector pins can move into the screen holes and penetrate through the screen holes, and therefore particulate matter adhering to the interiors of the screen holes and the bottoms of the screen holes is ejected out to prevent the screen holes from being blocked.

Description

Technical Field

[0001] This invention relates to the field of material recycling technology, and in particular to a polyester fiber fabric recycling and granulation device. Background Technology

[0002] Polyester fiber fabric has multiple uses after recycling. One of them is to generate polyester fiber granules as raw materials for other products. Polyester fiber granulation is usually carried out on an extrusion granulator to produce granular raw materials. During the granulation process, defective granules of varying sizes will be produced. Generally, screening equipment needs to be used on the granulator to separate the defective granules. The defective granules can be added back into the hopper of the granulator for regranulation.

[0003] In existing technologies, polyester fibers are mostly granulated using screw extrusion granulation equipment. The granulation process requires heating to a molten state before extrusion. The extruded polyester fibers are then cut by cutters to obtain polyester fiber granules. Therefore, when producing large-volume polyester fiber granules, the granules generated from the granulator are at a high temperature when they first exit the granulator and enter the screening equipment. Some of the larger granules may not be completely solidified. These incompletely solidified granules are very easy to adhere to the screen during screening, causing screen blockage and affecting screening efficiency. Therefore, the screen needs to be cleaned frequently during granulation to prevent screen blockage.

[0004] In existing technologies, brushes are typically used to clean screens. To avoid affecting production efficiency and prevent raw materials from sticking to the shaft inside the granulation equipment, brushes are usually used for online screen cleaning. Due to the high temperature inside the screening equipment, steel brushes are generally used for cleaning the screens. However, in practice, because the bristles of steel brushes have high strength, they can come into contact with the edges of the screen holes, preventing the bristles from entering the screen holes. This results in particles adhering to the screen holes and the bottom of the screen holes not being completely cleaned, thus affecting production efficiency. Summary of the Invention

[0005] The purpose of this invention is to address the drawback of easy clogging in the screening equipment of granulators in the prior art, and to propose a polyester fiber fabric recycling granulation device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a polyester fiber fabric recycling and granulation device, including a granulation unit. A housing is provided at the outlet of the granulation unit. A first screen and a second screen are inclinedly arranged inside the housing. The first screen is located above the second screen. A cleaning mechanism is provided inside the housing to clean the first screen. The cleaning mechanism includes a main shaft, a first rotating disk, a second rotating disk, a plurality of first ejector pins, and a plurality of second ejector pins. The main shaft is rotatably mounted inside the housing through a drive structure. The first rotating disk and the second rotating disk are both screwed onto the main shaft. A first guide hole is radially opened on the first rotating disk, and the first ejector pins are slidably fitted into the first guide hole. A second guide hole is radially opened on the second rotating disk, and the second ejector pins are slidably fitted into the second guide hole.

[0008] Preferably, the first rotating disk is provided with a plurality of first connecting structures to connect a plurality of first ejector pins. The first connecting structure includes a first guide rod, which is slidably fitted in a first guide hole. One end of the first guide rod is fixed to a first ejector pin, and the other end is fixed to a first screw. The first rotating disk is provided with a first bearing seat, on which a first worm gear is rotatably mounted. The first worm gear is screwed to the first screw. A first worm is rotatably mounted in the first rotating disk, which matches the first worm gear. A first driven gear is fixed to the first worm. A first extension shaft is rotatably mounted on the first rotating disk, with one end extending into a second rotating disk. One end of the first extension shaft is fixed to a first driving gear, and the other end is fixed to a first drive gear. The first driving gear matches the first driven gear.

[0009] The first guide rod is slidably fitted with a first magnetic component, the first magnetic component is provided with a first return spring, and a first rack is fixedly connected to the first magnetic component.

[0010] Preferably, the second rotating disk is provided with a plurality of second connecting structures to connect a plurality of second ejector pins. The second connecting structure includes a second guide rod, which is slidably fitted in a second guide hole. One end of the second guide rod is fixed to a second ejector pin, and the other end is fixed to a second screw. The second rotating disk is provided with a second bearing seat, on which a second worm gear is rotatably mounted. The second worm gear is screwed to the second screw. A second worm is rotatably mounted in the second rotating disk, and the second worm matches the second worm gear. A second driven gear is fixed to the second worm. A second extension shaft is rotatably mounted on the second rotating disk. One end of the second extension shaft extends into the first rotating disk. One end of the second extension shaft is fixed to a second driving gear, and the other end is fixed to a second drive gear. The second driving gear matches the second driven gear.

[0011] The second guide rod is slidably fitted with a second magnetic component, the second magnetic component is provided with a second return spring, and a second rack is fixedly connected to the second magnetic component.

[0012] Preferably, the first drive gear is matched with the second rack, and the second drive gear is matched with the first rack.

[0013] Preferably, the drive structure includes a motor, which is fixedly connected to the housing. A reciprocating screw is fixedly connected to the output end of the motor, and a keyway is provided on the reciprocating screw. A sliding groove is provided on the side wall of the housing, and a slider is slidably fitted in the sliding groove. A main shaft is rotatably mounted on the slider, and a second bevel gear is fixedly connected to the end of the main shaft. A nut seat is fixedly connected to the slider, and the nut seat is screwed onto the reciprocating screw. A first bevel gear is rotatably mounted on the nut seat, and the first bevel gear matches the second bevel gear. The first bevel gear is slidably fitted on the reciprocating screw.

[0014] The present invention proposes a polyester fiber fabric recycling and granulation device, which has the following advantages: the polyester fiber fabric recycling and granulation device uses a first ejector pin to slide in a first rotating mechanism and a second ejector pin to slide in a second rotating disk, so that the ejector pin can move into the screen hole and penetrate the screen hole, thereby ejecting the particles adhering to the inside and bottom of the screen hole to prevent the screen hole from clogging. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a polyester fiber fabric recycling and granulation device proposed in this invention.

[0016] Figure 2 This is a cross-sectional view of a polyester fiber fabric recycling and granulation device proposed in this invention.

[0017] Figure 3 This is a schematic diagram of the internal structure of the shell of a polyester fiber fabric recycling and granulation device proposed in this invention.

[0018] Figure 4 This is a schematic diagram of the cleaning mechanism of a polyester fiber fabric recycling and granulation device proposed in this invention.

[0019] Figure 5 This invention proposes a polyester fiber fabric recycling and granulation device. Figure 4 Top view.

[0020] Figure 6 This is a schematic diagram of the internal structure of the first rotating disk of a polyester fiber fabric recycling and granulation device proposed in this invention.

[0021] Figure 7 This is a schematic diagram of the structure of the first rotating disk of a polyester fiber fabric recycling and granulation device proposed in this invention.

[0022] Figure 8 This is a schematic diagram of the structure of the second rotating disk of a polyester fiber fabric recycling and granulation device proposed in this invention.

[0023] Figure 9 This invention proposes a polyester fiber fabric recycling and granulation device. Figure 7 Enlarged view of point A in the image.

[0024] Figure 10 This invention proposes a polyester fiber fabric recycling and granulation device. Figure 8 Enlarged view of point B in the image.

[0025] Figure 11 This is a diagram showing the assembly of the first and second connecting structures of a polyester fiber fabric recycling and granulation device proposed in this invention.

[0026] Figure 12 This invention proposes a polyester fiber fabric recycling and granulation device. Figure 1 Enlarged view of point C in the image.

[0027] Figure 13 This invention proposes a polyester fiber fabric recycling and granulation device. Figure 3 Enlarged view of point D in the image.

[0028] Figure 14 This is a schematic diagram illustrating the working principle of a polyester fiber fabric recycling and granulation device proposed in this invention. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] Example 1

[0031] Reference Figure 1-4A polyester fiber fabric recycling and granulation device includes a granulation device 1. A housing 2 is provided at the outlet of the granulation device 1. A first screen 201 and a second screen 202 are inclinedly arranged inside the housing 2. The first screen 201 is located above the second screen 202. A cleaning mechanism 4 is provided inside the housing 2 to clean the first screen 201. The cleaning mechanism 4 includes a main shaft 3, a first rotating disk 5, a second rotating disk 6, a plurality of first ejector pins 503 and a plurality of second ejector pins 603. The main shaft 3 is rotatably installed inside the housing 2 through a drive structure. The first rotating disk 5 and the second rotating disk 6 are both screwed onto the main shaft 3. A first guide hole 501 is radially opened on the first rotating disk 5. The first ejector pin 503 is slidably fitted in the first guide hole 501. A second guide hole 601 is radially opened on the second rotating disk 6. The second ejector pin 603 is slidably fitted in the second guide hole 601.

[0032] When this device is in operation, polyester fiber cloth is added to the feed inlet of the granulation equipment 1. After being processed by the granulation equipment 1, the polyester fiber cloth is formed into polyester fiber granules. The granules are discharged from the discharge outlet of the granulation equipment 1 into the shell 2. After entering the shell 2, the granules are screened by passing through the first screen 201 and the second screen 202 in sequence. The granules first pass through the first screen 201 with large mesh. After being screened by the first screen 201, coarse and defective products are screened out, while fine and defective products and qualified granules fall onto the second screen 202 through the mesh of the first screen 201. The screened coarse and defective products enter the defective product discharge outlet at the bottom along the inclined surface of the first screen 201 under the action of gravity.

[0033] After fine defective products and qualified particles fall onto the second screen 202, they undergo secondary screening. Fine defective products will pass through the small sieve holes of the second screen 202 and enter the defective product outlet at the bottom, while qualified particles will be left on the second screen 202 and discharged from the qualified material outlet on the side wall under the action of gravity.

[0034] During the sieving of particles by the first screen 201, some particles that are not completely cooled will adhere to the first screen 201. To prevent the particles adhering to the first screen 201 from clogging the screen holes, they can be cleaned by the cleaning mechanism 4. When the cleaning mechanism 4 is working, the main shaft 3 rotates. The rotation of the main shaft 3 will drive the first rotating disk 5 and the second rotating disk 6 to rotate. The two rotating disks will drive the first ejector pin 503 and the second ejector pin 603 to rotate. During the rotation, the first ejector pin 503 and the second ejector pin 603 can not only scrape off the particles adhering to the screen surface, but also, since the first ejector pin 503 and the second ejector pin 603 can slide on the rotating disk, the ejector pins can move into the screen holes to push out the particles clogging the screen holes.

[0035] like Figure 14As shown, when the first rotating disk 5 and the second rotating disk 6 are working, the first rotating disk 5 is located above the sieve hole, and the second rotating disk 6 is located directly above the edge of the sieve hole. When the first rotating disk 5 and the second rotating disk 6 rotate, the first pin 503 on the first rotating disk 5 can slide into the sieve hole to push out the particles inside the sieve hole and the bottom of the sieve hole.

[0036] Since the first rotating disk 5 and the second rotating disk 6 are threadedly connected to the main shaft 3, and the main shaft 3 is provided with multiple reciprocating threads, when the main shaft 3 rotates relative to the two rotating disks, the distance between the first rotating disk 5 and the second rotating disk 6 will change, thereby driving the first ejector pin 503 and the second ejector pin 603 to move and adjust the distance between the two ejector pins in order to clean the screens with different screen hole spacings.

[0037] Example 2

[0038] like Figure 4-11 As shown, the first rotating disk 5 is provided with multiple first connecting structures to connect multiple first ejector pins 503. Each first connecting structure includes a first guide rod 502, which is slidably fitted into a first guide hole 501. One end of the first guide rod 502 is fixed to a first ejector pin 3, and the other end is fixed to a first screw 504. The first rotating disk 5 is provided with a first bearing seat 507, on which a first worm gear 508 is rotatably mounted. The first worm gear 508 is screwed onto the first screw 504. 4. A first worm gear 511 is rotatably installed inside the first rotating disk 5. The first worm gear 511 is matched with the first worm wheel 508. A first driven gear 512 is fixedly connected to the first worm gear 511. A first extension shaft 509 is rotatably installed on the first rotating disk 5. One end of the first extension shaft 509 extends into the second rotating disk 6. A first driving gear 510 is fixedly connected to one end of the first extension shaft 509, and a first drive gear 513 is fixedly connected to the other end. The first driving gear 510 is matched with the first driven gear 501.

[0039] A first magnetic component 505 is slidably fitted on the first guide rod 502. A first return spring 514 is provided on the first magnetic component 505. A first rack 506 is fixedly connected to the first magnetic component 505.

[0040] If the first drive gear 513 is driven to rotate, the rotation of the first drive gear 513 will drive the first extension shaft 509 to rotate. The rotation of the first extension shaft 509 will drive the first drive gear 510 to rotate. The rotation of the first drive gear 510 will drive the first driven gear 512 to rotate. The rotation of the first driven gear 512 will drive the first worm 511 to rotate. The rotation of the first worm 511 will drive the first worm wheel 508 to rotate. Since the first worm wheel 508 is screwed onto the screw 504 and the first guide rod 502 can only slide radially within the first guide hole 501, the rotation of the first worm wheel 508 will drive the first screw 504 to move axially. The movement of the first screw 504 will drive the first guide rod 502 to slide within the first guide hole 501. The movement of the first guide rod 502 will drive the first ejector pin 503 to move radially along the first rotating disk 5, so that the first ejector pin 503 can be inserted into the sieve hole.

[0041] The second rotating disk 6 is provided with multiple second connecting structures to connect multiple second ejector pins 603. Each second connecting structure includes a second guide rod 602, which is slidably fitted into a second guide hole 601. One end of the second guide rod 602 is fixed to a second ejector pin 3, and the other end is fixed to a second screw 604. The second rotating disk 6 is provided with a second bearing seat 607, on which a second worm gear 608 is rotatably mounted. The second worm gear 608 is screwed onto the second screw 604. A second worm gear 611 is rotatably mounted inside the second rotating disk 6. The second worm gear 611 is matched with the second worm wheel 608. A second driven gear 612 is fixedly connected to the second worm gear 611. A second extension shaft 609 is rotatably mounted on the second rotating disk 6. One end of the second extension shaft 609 extends into the first rotating disk 5. A second driving gear 610 is fixedly connected to one end of the second extension shaft 609, and a second drive gear 613 is fixedly connected to the other end. The second driving gear 610 is matched with the second driven gear 601.

[0042] The second guide rod 602 is slidably fitted with a second magnetic component 605, the second magnetic component 605 is provided with a second return spring 614, and the second magnetic component 605 is fixedly connected with a second rack 606.

[0043] Based on the above description, it can be seen that the rotation of the first drive gear 513 will cause the first ejector pin 503 to move radially along the first rotating disk 5. Similarly, it can be seen that the rotation of the second drive gear 613 will cause the second ejector pin 603 to move radially along the second rotating disk 6.

[0044] Since the particles discharged from the screw granulator have a certain temperature, synthetic fiber screens are not suitable for high-temperature working environments. Therefore, a metal screen is used here, and the metal screen is made of a magnetic metal.

[0045] To complement the adjustable spacing between the first rotating disk 5 and the second rotating disk 6 described in Embodiment 1, the first extension shaft 509 and the second extension shaft 609 used in this embodiment are both composed of a slidably fitted splined shaft and an internal splined tube.

[0046] by Figure 14 For example, when the first ejector pin 503 is perpendicular to the sieve hole, the second ejector pin 603 will be perpendicular to the edge of the sieve hole.

[0047] Since the sieve holes cannot generate magnetism on the second magnetic component 505, the second magnetic component 505 is supported by the elastic force of the first reset spring 514, and the second magnetic component 505 will not be displaced on the first guide rod 502.

[0048] Since the screen is made of a magnetic metal, the edge of the screen holes will generate a magnetic force on the second magnetic component 605. Under the action of the magnetic force, the second magnetic component 605 compresses the second return spring 614 and moves. The displacement of the second magnetic component 605 will drive the second rack 606 to move. Since the first drive gear 513 is matched with the second rack 606, and the second drive gear 613 is matched with the first rack 506, the movement of the second rack 606 will drive the first drive gear 513 to rotate.

[0049] Based on the above description, it can be seen that the rotation of the first drive gear 513 will cause the first ejector pin 503 to move radially along the first rotating disk 5, thereby causing the first ejector pin 503 to move down into the sieve hole to clean the particles adhering to the sieve hole and prevent the sieve hole from being blocked.

[0050] Example 3

[0051] like Figure 12-13 As shown, the drive structure includes a motor 7, which is fixedly connected to the housing 2. A reciprocating screw 8 is fixedly connected to the output end of the motor 7. A keyway is provided on the reciprocating screw 8. A sliding groove is provided on the side wall of the housing 2. A slider 12 is slidably fitted in the sliding groove. A main shaft 3 is rotatably mounted on the slider 12. A second bevel gear 11 is fixedly connected to the end of the main shaft 3. A nut seat 9 is fixedly connected to the slider 12. The nut seat 9 is screwed onto the reciprocating screw 8. A first bevel gear 10 is rotatably mounted on the nut seat 9. The first bevel gear 10 matches the second bevel gear 11. The first bevel gear 10 is slidably fitted on the reciprocating screw 8.

[0052] The drive structure is used to drive the main shaft 3 to move. Its working process is as follows: the motor 7 is started, and the motor 7 drives the reciprocating screw 8 to rotate. Since the nut seat 9 is screwed on the reciprocating screw 8, the reciprocating screw 8 will drive the nut seat 9 to move during rotation, thereby driving the main shaft 3 to move on the screen surface.

[0053] During the movement of the main shaft 3, the first bevel gear 10 is slidably engaged with the reciprocating screw 8 through the keyway. The rotation of the reciprocating screw 8 will also drive the first bevel gear 10 to rotate. The rotation of the first bevel gear 10 drives the second bevel gear 11 to rotate. The rotation of the second bevel gear 11 will drive the main shaft 3 to rotate, thereby causing the cleaning mechanism 4 on the main shaft 3 to clean the screen.

[0054] Working principle:

[0055] Start the motor 7, which drives the reciprocating screw 8 to rotate. Since the nut seat 9 is screwed onto the reciprocating screw 8, the rotation of the reciprocating screw 8 will drive the nut seat 9 to move, thereby driving the main shaft 3 to move on the screen surface.

[0056] During the movement of the main shaft 3, the first bevel gear 10 is slidably engaged with the reciprocating screw 8 through the keyway. The rotation of the reciprocating screw 8 will also drive the first bevel gear 10 to rotate. The rotation of the first bevel gear 10 drives the second bevel gear 11 to rotate. The rotation of the second bevel gear 11 will drive the main shaft 3 to rotate, thereby causing the cleaning mechanism 4 on the main shaft 3 to clean the screen.

[0057] During the cleaning process, as the main shaft 3 rotates and moves, multiple cleaning mechanisms 4 on the main shaft 3 will rotate and move. That is, the first rotating disk 5 and the second rotating disk 6 will rotate and move on the screen. The distance between the first rotating disk 5 and the second rotating disk 6 is adjusted by the bidirectional thread on the main shaft 3, so that the first pin 503 and the second pin 603 correspond to the screen hole and the edge of the screen hole respectively.

[0058] by Figure 14 For example, when the first ejector pin 503 is perpendicular to the sieve hole, the second ejector pin 603 will be perpendicular to the edge of the sieve hole.

[0059] Since the sieve holes cannot generate magnetism on the second magnetic component 505, the second magnetic component 505 is supported by the elastic force of the first reset spring 514, and the second magnetic component 505 will not be displaced on the first guide rod 502.

[0060] Since the screen is made of a magnetic metal, the edge of the screen holes will generate a magnetic force on the second magnetic component 605. Under the action of the magnetic force, the second magnetic component 605 compresses the second return spring 614 and moves. The displacement of the second magnetic component 605 will drive the second rack 606 to move. Since the first drive gear 513 is matched with the second rack 606, and the second drive gear 613 is matched with the first rack 506, the movement of the second rack 606 will drive the first drive gear 513 to rotate.

[0061] Based on the description in Embodiment 2 above, it can be seen that the rotation of the first drive gear 513 will cause the first ejector pin 503 to move radially along the first rotating disk 5, thereby causing the first ejector pin 503 to move down into the sieve hole to clean the particles adhering to the sieve hole and prevent the sieve hole from being blocked.

[0062] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A polyester fiber fabric recycling and granulation device, comprising a granulation device (1), wherein a housing (2) is provided at the outlet of the granulation device (1), and a first screen (201) and a second screen (202) are inclinedly arranged inside the housing (2), wherein the first screen (201) is located above the second screen (202), characterized in that: The housing (2) is provided with a cleaning mechanism (4) to clean the first screen (201). The cleaning mechanism (4) includes a main shaft (3), a first rotating disk (5), a second rotating disk (6), a plurality of first ejector pins (503) and a plurality of second ejector pins (603). The main shaft (3) is rotatably installed in the housing (2) through a drive structure. The first rotating disk (5) and the second rotating disk (6) are both screwed onto the main shaft (3). The first rotating disk (5) has a first guide hole (501) radially opened on it. The first ejector pin (503) is slidably fitted in the first guide hole (501). The second rotating disk (6) has a second guide hole (601) radially opened on it. The second ejector pin (603) is slidably fitted in the second guide hole (601).

2. The polyester fiber fabric recycling pelletizing apparatus according to claim 1, characterized by, The first rotating disk (5) is provided with a plurality of first connecting structures to connect a plurality of first ejector pins (503). The first connecting structure includes a first guide rod (502). The first guide rod (502) is slidably fitted in a first guide hole (501). One end of the first guide rod (502) is fixed to a first ejector pin (3), and the other end is fixed to a first screw (504). The first rotating disk (5) is provided with a first bearing seat (507). A first worm gear (508) is rotatably mounted on the first bearing seat (507). The first worm gear (508) is screwed to the first screw (504). 4) A first worm gear (511) is rotatably mounted inside the first rotating disk (5). The first worm gear (511) is matched with the first worm wheel (508). A first driven gear (512) is fixedly connected to the first worm gear (511). A first extension shaft (509) is rotatably mounted on the first rotating disk (5). One end of the first extension shaft (509) extends into the second rotating disk (6). A first driving gear (510) is fixedly connected to one end of the first extension shaft (509), and a first drive gear (513) is fixedly connected to the other end. The first driving gear (510) is matched with the first driven gear (501). The first guide rod (502) is slidably fitted with a first magnetic component (505), the first magnetic component (505) is provided with a first return spring (514), and the first magnetic component (505) is fixedly connected with a first rack (506).

3. The polyester fiber fabric recycling pelletizing apparatus according to claim 2, characterized by, The second rotating disk (6) is provided with a plurality of second connecting structures to connect a plurality of second ejector pins (603). The second connecting structure includes a second guide rod (602), which is slidably fitted in a second guide hole (601). One end of the second guide rod (602) is fixed to a second ejector pin (3), and the other end is fixed to a second screw (604). The second rotating disk (6) is provided with a second bearing seat (607), on which a second worm gear (608) is rotatably mounted. The second worm gear (608) is screwed to the second screw (601). 4) A second worm gear (611) is rotatably mounted inside the second rotating disk (6). The second worm gear (611) is matched with the second worm wheel (608). A second driven gear (612) is fixedly connected to the second worm gear (611). A second extension shaft (609) is rotatably mounted on the second rotating disk (6). One end of the second extension shaft (609) extends into the first rotating disk (5). A second driving gear (610) is fixedly connected to one end of the second extension shaft (609), and a second drive gear (613) is fixedly connected to the other end. The second driving gear (610) is matched with the second driven gear (601). The second guide rod (602) is slidably fitted with a second magnetic component (605), the second magnetic component (605) is provided with a second return spring (614), and the second magnetic component (605) is fixedly connected with a second rack (606).

4. The polyester fiber fabric recycling pelletizing apparatus according to claim 3, characterized by The first drive gear (513) is matched with the second rack (606), and the second drive gear (613) is matched with the first rack (506).

5. The polyester fiber cloth recycling and pelletizing device according to any one of claims 1 to 4, characterized in that, The drive structure includes a motor (7), which is fixedly connected to the housing (2). A reciprocating screw (8) is fixedly connected to the output end of the motor (7). A keyway is provided on the reciprocating screw (8). A sliding groove is provided on the side wall of the housing (2). A slider (12) is slidably fitted in the sliding groove. A main shaft (3) is rotatably mounted on the slider (12). A second bevel gear (11) is fixedly connected to the end of the main shaft (3). A nut seat (9) is fixedly connected to the slider (12). The nut seat (9) is screwed onto the reciprocating screw (8). A first bevel gear (10) is rotatably mounted on the nut seat (9). The first bevel gear (10) matches the second bevel gear (11). The first bevel gear (10) is slidably fitted on the reciprocating screw (8).

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