A PP plate production line

Abstract

The utility model relates to PP board production technical field, the technical problem that the utility model solves is easy to deform, influences the shaping effect. In order to solve above technical problem, the utility model provides a kind of PP board production line. The utility model includes: front cold roller machine is located below three-roller calender;Multiple first cooling roller is spaced apart and is arranged on first frame body, and first cooling roller is rotatably connected with first frame body;First drive part is connected with first frame body, and first drive part is used to drive multiple first cooling roller synchronous rotation;Multiple cooling roller group is spaced apart and is arranged;Second cooling roller is rotatably connected with second frame body;Multiple cooling roller group second cooling roller synchronous rotation;Slitting machine is located in the back of multiple cooling stations;Guide pillar is rotatably connected on third frame body;Along the axial direction of guide pillar, multiple cutting knives are spaced apart and are arranged on guide pillar, and the position of cutting knife on guide pillar is adjustable. Post-processing mechanism, is located in the back of slitting machine. The utility model avoids that board deforms, guarantees forming effect.

Description

Technical Field

[0001] This utility model relates to the field of PP sheet production technology, and in particular to a PP sheet production line. Background Technology

[0002] The production process of PP thick sheets begins with raw material preparation, using polypropylene (PP) resin granules as the main material, supplemented with color masterbatch, toughening agents, antioxidants, and other additives, all mixed uniformly. The mixed raw material enters an extruder, where the temperature rises to 160-170℃ during the heating and plasticizing process, softening and melting the material into a viscous flow state. After impurities are filtered through a perforated plate, the melt is extruded into a sheet shape through a coat hanger-type flat die. Subsequently, the melt enters a three-roll calender, where it is gradually shaped through the calendering and cooling action of the rollers, precisely controlling the thickness and surface finish. The cooled sheet is then stably stretched by a traction machine, and finally trimmed to form the finished PP thick sheet.

[0003] The existing production line includes an extruder, a three-roll calender, and post-processing equipment (first traction machine, cooling rack, laminating machine, second traction machine, and cross-cutting machine). After being processed into sheets by the extruder and three-roll calender, the sheets are placed directly on the cooling rack for natural cooling, resulting in low cooling efficiency. Furthermore, because the sheets are relatively thin, they are prone to deformation, affecting the shaping effect. In addition, this application cannot produce products of various specifications. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the above-mentioned problems existing in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides a PP sheet production line, comprising:

[0006] Extruder;

[0007] The three-roll calender is located behind the extruder;

[0008] A front cooling roller mill is located below a three-roll calender. The front cooling roller mill includes a first frame, multiple first cooling rollers, a first drive unit, and a lift. Along the width direction of the first frame, multiple first cooling rollers are spaced apart on the first frame, and the first cooling rollers are rotatably connected to the first frame. The first drive unit is connected to the first frame and is used to drive the multiple first cooling rollers to rotate synchronously. The output end of the lift is connected to the first frame.

[0009] Multiple cooling stations are located behind the front cooling roller mill; the multiple cooling stations include a second frame and multiple cooling roller groups; multiple cooling roller groups are spaced apart along the width of the second frame; each cooling roller group includes two second cooling rollers spaced apart vertically; the second cooling rollers are rotatably connected to the second frame; the second cooling rollers of the multiple cooling roller groups rotate synchronously; two elevators are respectively connected to the three-roll calender and the multiple cooling stations.

[0010] The slitting machine is located at the rear of the multi-cooling station. The slitting machine includes a third frame, guide columns, and multiple cutters. The guide columns are rotatably connected to the third frame. Along the axial direction of the guide columns, multiple cutters are spaced apart on the guide columns, and the position of the cutters on the guide columns is adjustable.

[0011] The post-processing mechanism is located at the rear of the slitting machine.

[0012] In one embodiment of the present invention, the extruder includes a plurality of first extruders and at least one second extruder; the output rates of the first extruders and the second extruders are different.

[0013] In one embodiment of this utility model, there are multiple slitting machines; the multiple slitting machines are arranged sequentially along the conveying direction of the sheet.

[0014] In one embodiment of this utility model, the first driving unit includes a drive motor, a driving gear, a plurality of driven gears, and a plurality of transmission gears; the drive motor is connected to the driving gear; the driven gears and transmission gears are rotatably connected to the first frame; the driven gears are coaxially connected to the first cooling roller; the driving gear and the driven gears, and adjacent driven gears mesh with each other through transmission gears.

[0015] In one embodiment of the present invention, the cooling roller assembly further includes an adjustment component; the adjustment component is used to adjust the distance between the two second cooling rollers.

[0016] In one embodiment of the present invention, the multi-cooling station further includes a second drive unit and a transmission unit; one end of the two first cooling rollers is connected through the transmission unit, and the other end of one of them is connected to the first drive unit; the transmission unit includes two transmission wheels and a transmission component; the two transmission wheels are respectively connected to the two first cooling rollers, and the transmission component is wound around the two transmission wheels.

[0017] In one embodiment of this utility model, the multi-cooling station further includes a moving component; the moving component includes a moving motor, a moving wheel, and a moving guide rail; the moving motor is located on one side of the second frame; the output end of the moving motor is connected to the moving wheel to drive the moving wheel to rotate; the moving wheel is provided with teeth, and the moving guide rail is provided with a rack, the teeth meshing with the rack.

[0018] In one embodiment of this utility model, the slitting machine further includes two first adjusting components, which are respectively connected to the cutters located at both ends of the guide post. Each first adjusting component includes a sliding groove, a first mounting base, an adjusting screw, an adjusting screw nut, and a first tightening screw. The sliding groove is disposed on the guide post and extends axially along the guide post. The first mounting base is sleeved on the guide post, and the cutter is connected to the first mounting base. The adjusting screw is coaxially disposed in the guide post. The adjusting screw nut cooperates with the adjusting screw and is slidably connected in the sliding groove. The first tightening screw connects the adjusting screw nut and the first mounting base.

[0019] In one embodiment of the present invention, the slitting machine further includes a plurality of second adjusting components; each of the second adjusting components is correspondingly arranged with a cutter located in the middle of the guide post; each second adjusting component includes a second mounting base and a second tightening screw; the second mounting base is sleeved on the guide post; the second tightening screw passes through the second mounting base and presses against the outer wall of the guide post.

[0020] In one embodiment of this utility model, the cutter includes a telescopic part and a blade; the telescopic part includes a connecting seat, a telescopic screw, and a telescopic screw nut; the connecting seat is provided with a groove extending vertically; the telescopic screw extends vertically and is rotatably connected to the connecting seat; the telescopic screw nut is slidably connected in the groove and cooperates with the telescopic screw; the blade is connected to the telescopic screw nut.

[0021] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0022] The PP sheet production line described in this application can prevent the sheet from deforming during cooling, thereby improving the shaping effect. Furthermore, this application cuts the sheet into products of different lengths and widths to suit the production of products of various specifications. Attached Figure Description

[0023] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0024] Figure 1 This is a schematic diagram of the structure of a PP sheet production line according to a preferred embodiment of the present invention;

[0025] Figure 2 yes Figure 1 The diagram shows the structure of the front cold roller mill in the PP sheet production line.

[0026] Figure 3 yes Figure 2 The diagram shows the bottom of the front cooling roller mill;

[0027] Figure 4 yes Figure 3Enlarged view of point C;

[0028] Figure 5 yes Figure 1 The diagram shows a multi-cooling station structure in a PP sheet production line.

[0029] Figure 6 yes Figure 5 Enlarged view of point A;

[0030] Figure 7 yes Figure 5 A schematic diagram showing another perspective of the multi-cooling station;

[0031] Figure 8 yes Figure 7 Enlarged view of point B;

[0032] Figure 9 yes Figure 1 The diagram shown is a structural schematic of the slitting machine in the PP sheet production line.

[0033] Figure 10 yes Figure 9 A partial schematic diagram of the slitting machine is shown;

[0034] Figure 11 yes Figure 9 The diagram shows the structure of the cutter in the slitting machine;

[0035] Explanation of reference numerals in the accompanying drawings: 100, extruder; 110, first extruder; 120, second extruder;

[0036] 200. Three-roll calender;

[0037] 300. Front cooling roller; 310. First frame; 311. First side plate; 312. First cross brace; 320. First cooling roller; 330. First drive unit; 331. Drive motor; 332. Drive gear; 333. Driven gear; 334. Transmission gear; 340. Elevator;

[0038] 400. Multiple cooling stations; 410. Second frame; 411. Base frame; 412. Cooling side plate; 413. Second cross brace; 420. Cooling roller assembly; 421. Second cooling roller; 422. Telescopic cylinder; 423. Moving block; 430. Second drive unit; 440. Transmission unit; 441. Transmission wheel; 442. Transmission component; 450. Moving part; 451. Moving motor; 452. Moving wheel; 453. Moving guide rail; 460. Step platform;

[0039] 500. Slitting machine; 510. Third frame; 520. Guide post; 530. Cutting blade; 531. Blade; 532. Connecting seat; 533. Telescopic screw; 534. Telescopic screw nut; 535. Groove; 540. Rotating component; 550. First adjusting component; 551. Slide groove; 552. First mounting seat; 553. Adjusting screw; 554. Adjusting screw nut; 555. First tightening screw; 556. Operating handle; 560. Second adjusting component; 561. Second mounting seat; 562. Second tightening screw;

[0040] 600. Cooling bracket;

[0041] 700. Laminating machine;

[0042] 800, Cross-cutting machine;

[0043] 900, Traction machine. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0045] Reference Figures 1-11 As shown, this utility model embodiment provides a PP sheet production line, including:

[0046] Extruder 100;

[0047] The three-roll calender 200 is located behind the extruder 100;

[0048] A front cooling roller mill 300 is located below a three-roll calender 200. The front cooling roller mill 300 includes a first frame 310, a plurality of first cooling rollers 320, a first drive unit 330, and two elevators 340. Along the width direction of the first frame 310, the plurality of first cooling rollers 320 are spaced apart on the first frame 310, and the first cooling rollers 320 are rotatably connected to the first frame 310. The first drive unit 330 is connected to the first frame 310 and is used to drive the plurality of first cooling rollers 320 to rotate synchronously. The elevators 340 are connected to the first frame 310. In some embodiments, the output end of the elevators 340 is connected to the first frame 310.

[0049] A multi-cooling station 400 is located behind the front cooling roller mill 300. The multi-cooling station 400 includes a second frame 410 and multiple cooling roller groups 420. The multiple cooling roller groups 420 are spaced apart along the width direction of the second frame 410. Each cooling roller group 420 includes two second cooling rollers 421 spaced apart vertically. The second cooling rollers 421 are rotatably connected to the second frame 410. The second cooling rollers 421 of the multiple cooling roller groups 420 rotate synchronously. Two elevators 340 are respectively connected to the three-roll calender 200 and the multi-cooling station 400.

[0050] The slitting machine 500 is located at the rear of the multi-cooling station 400. The slitting machine 500 includes a third frame 510, a guide column 520, and multiple cutters 530. The guide column 520 is rotatably connected to the third frame 510. Along the axial direction of the guide column 520, multiple cutters 530 are spaced apart on the guide column 520, and the position of the cutters 530 on the guide column 520 is adjustable.

[0051] The post-processing mechanism is located at the rear of the slitting machine 500. The post-processing mechanism includes a cooling bracket 600, a laminating machine 700, a cross-cutting machine 800, and two traction machines 900. The cooling bracket 600, laminating machine 700, and cross-cutting machine 800 are arranged sequentially. The two traction machines 900 are located at both ends of the cooling bracket 600.

[0052] This application also includes a feeder that is connected to the extruder 100.

[0053] Specifically, the material is processed by the extruder 100, then shaped by a die before entering the three-roll calender 200. The three-roll calender 200 performs preliminary shaping of the sheet surface, making it smooth and flat. Subsequently, the sheet enters the pre-cooling roller mill 300, which further cools and shapes the sheet. Because the first cooling roller 320 of the pre-cooling roller mill 300 supports the sheet, it is prevented from sagging or deforming due to gravity, thus improving the shaping effect. The multiple second cooling rollers 421 of the multi-cooling station 400 can compact the sheet while accelerating cooling, thereby reshaping it and ensuring the final shaping effect of the sheet. Finally, the sheet material enters the post-processing mechanism, specifically: the sheet material is naturally cooled on the cooling support 600, and the traction machine 900 provides power for the movement of the sheet material on the cooling support 600; the slitting machine 500 removes excess waste edges from the sheet material and cuts it into a semi-finished product of a certain width; the laminating machine 700 laminates the semi-finished product, thereby protecting its surface; the cross-cutting machine 800 further processes the semi-finished product into segments, ultimately forming the finished product. Thus, the first cooling roller 320 of this application supports the freshly processed sheet material (which is at a relatively high temperature and easily deformed) and performs the first cooling, thereby preventing deformation and ensuring the forming effect; then, multiple second cooling rollers 421 clamp the initially cooled sheet material, performing a second cooling while compacting it, further ensuring the forming effect and improving cooling efficiency. Furthermore, this application uses the slitting machine 500 and the cross-cutting machine 800 to cut the sheet material into products of different lengths and widths to suit the production of products of different specifications.

[0054] The materials have different thicknesses. In order to ensure that different materials can enter the front cooling roller 300 correctly, the height of the front cooling roller 300 is adjusted by the elevator 340 to facilitate the entry of materials.

[0055] Furthermore, the extruder 100 includes a plurality of first extruders 110 and at least one second extruder 120; the output rates of the first extruders 110 and the second extruders 120 are different.

[0056] Since different board formulations require different proportions of various raw materials, extruders with varying output rates can be used to precisely control the raw material ratios. Furthermore, using multiple extruders during production facilitates the layering of raw materials within the die, thereby improving board quality.

[0057] Furthermore, there are multiple slitting machines 500; multiple slitting machines 500 are arranged sequentially along the conveying direction of the board.

[0058] Specifically, since the board is relatively thick, a single cut may not be complete. Therefore, in this embodiment, the board is cut multiple times using multiple slitting machines 500 to avoid incomplete cutting.

[0059] Furthermore, the first drive unit 330 includes a drive motor 331, a drive gear 332, a plurality of driven gears 333, and a plurality of transmission gears 334; the drive motor 331 is connected to the drive gear 332; the driven gears 333 and the transmission gears 334 are rotatably connected to the first frame 310 respectively; the driven gears 333 are coaxially connected to the first cooling roller 320; the drive gear 332 and the driven gears 333, and two adjacent driven gears 333 are meshed through the transmission gears 334.

[0060] Specifically, the drive motor 331, under the transmission of the driving gear 332, the driven gear 333 and the transmission gear 334, drives multiple first cooling rollers 320 to rotate synchronously.

[0061] In some embodiments, the first frame 310 includes two first side plates 311 and at least one first cross brace 312 connected between the two first side plates 311. The first cooling roller 320 is connected to the first frame 310 via a bearing.

[0062] In some embodiments, the second frame 410 includes a base frame 411, two cooling side plates 412 and at least one second cross brace 413; the two cooling side plates 412 are connected to both sides of the base frame 411; the second cross brace 413 is connected between the two cooling side plates 412 and located on top of the cooling side plates 412.

[0063] Furthermore, the cooling roller assembly 420 also includes an adjustment component; the adjustment component is used to adjust the distance between the two second cooling rollers 421. In some embodiments, the adjustment component includes a telescopic cylinder 422 and a moving block 423; the telescopic cylinder 422 is connected to the second frame 410; the output end of the telescopic cylinder 422 is connected to the moving block 423; of the two second cooling rollers 421, one is rotatably connected to the moving block 423 and the other is rotatably connected to the second frame 410; the top of the second frame 410 is provided with a plurality of U-shaped grooves, and the U-shaped grooves are arranged one-to-one with the cooling roller assembly 420; the moving block 423 is disposed in the U-shaped groove; the telescopic cylinder 422 drives the moving block 423 to slide up and down in the U-shaped groove to adjust the distance between the two second cooling rollers 421.

[0064] Specifically, in this embodiment, the spacing between the two second cooling rollers 421 in each cooling roller group 420 can be adjusted to accommodate plates of different thicknesses.

[0065] Furthermore, the multi-cooling station 400 also includes a second drive unit 430 and a transmission unit 440; the second drive unit 430 has the same structure as the first drive unit 330; one end of the two first cooling rollers 320 is connected through the transmission unit 440, and the other end of one of them is connected to the first drive unit 330; the transmission unit 440 includes two transmission wheels 441 and a transmission component 442; the two transmission wheels 441 are respectively connected to the two first cooling rollers 320, and the transmission component 442 is wound around the two transmission wheels 441.

[0066] Specifically, this embodiment uses a single power source to drive multiple cooling roller groups 420 to rotate synchronously, resulting in a stable structure and low cost.

[0067] Furthermore, the multi-cooling station 400 also includes a moving component 450; the moving component 450 includes a moving motor 451, a moving wheel 452, and a moving guide rail 453; the moving motor 451 is located on one side of the second frame 410; the output end of the moving motor 451 is connected to the moving wheel 452 to drive the moving wheel 452 to rotate; the moving wheel 452 is provided with teeth, and the moving guide rail 453 is provided with a rack, and the teeth mesh with the rack.

[0068] Specifically, the three-roll calender 200 has its own moving parts, but due to the heavy weight of the three-roll calender 200, its own moving parts cannot move. Therefore, the multi-cooling station 400 in this embodiment is provided with a moving part 450. Since one elevator 340 of the front cooling roller 300 is connected to the three-roll calender 200 and the other elevator 340 is connected to the multi-cooling station 400, the moving part 450 can assist the three-roll calender 200 in moving, ensuring that the material will not deform when the three rollers stop moving.

[0069] Furthermore, the multi-cooling station 400 also includes a step platform 460; the step platform 460 is connected to one side of the bottom of the second frame 410. In some embodiments, the step platform 460 is connected to the outside of one of the cooling side plates 412.

[0070] Specifically, when it is necessary to adjust the multi-cooling station 400, the worker can approach the multi-cooling station 400 via the step platform 460 to make the adjustment.

[0071] In some embodiments, the third frame 510 includes two fixed seats, and the guide post 520 is rotatably connected between the two fixed seats.

[0072] Furthermore, the slitting machine 500 also includes a rotating component 540; the rotating component 540 is connected to the third frame 510, and the output end of the rotating component 540 is connected to one end of the guide post 520. In some embodiments, the rotating component 540 includes a motor. The rotating component 540 is connected to the outside of a fixed base. The guide post 520 is rotatably connected to the fixed base via bearings. The rotating component 540 drives the guide post 520 and the cutter 530 to rotate.

[0073] Furthermore, the slitting machine 500 also includes two first adjusting components 550, which are respectively connected to the cutters 530 located at both ends of the guide post 520. Each first adjusting component 550 includes a sliding groove 551, a first mounting base 552, an adjusting screw 553, an adjusting screw nut 554, and a first tightening screw 555. The sliding groove 551 is disposed on the guide post 520 and extends along the axial direction of the guide post 520. The first mounting base 552 is sleeved on the guide post 520, and the cutter 530 is connected to the first mounting base 552. The adjusting screw 553 is coaxially disposed in the guide post 520. The adjusting screw nut 554 cooperates with the adjusting screw 553 and is slidably connected in the sliding groove 551. The first tightening screw 555 connects the adjusting screw nut 554 and the first mounting base 552.

[0074] Specifically, in this embodiment, the width of the PP sheet is adjusted and burrs are removed using the first adjusting component 550. This application achieves position adjustment of the cutters 530 at both ends through the cooperation of the adjusting screw 553 and the adjusting screw nut 554, resulting in high adjustment precision and ensuring cleaner burr removal.

[0075] Furthermore, the first adjusting component 550 also includes an operating handle 556; the operating handle 556 is rotatably connected to the third frame 510; and one end of the adjusting screw 553 is connected.

[0076] Specifically, in this embodiment, the position of the cutter 530 can be adjusted by operating the handle 556, making operation more convenient and labor-saving.

[0077] Furthermore, the slitting machine 500 also includes a plurality of second adjusting components 560; each second adjusting component 560 is configured to correspond one-to-one with the cutter 530 located in the middle of the guide post 520; each second adjusting component 560 includes a second mounting base 561 and a second tightening screw 562; the second mounting base 561 is sleeved on the guide post 520; the second tightening screw 562 passes through the second mounting base 561 and presses against the outer wall of the guide post 520.

[0078] Specifically, in this embodiment, the gap between the second mounting base 561 and the guide post 520 facilitates the sliding of the second mounting base 561 to different positions of the guide post 520, and then the two are fixed by the second tightening screw 562, which is convenient for operation.

[0079] Furthermore, the cutter 530 includes a telescopic part and a blade 531; the telescopic part includes a connecting seat 532, a telescopic screw 533, and a telescopic screw nut 534; the connecting seat 532 is provided with a groove 535 extending vertically; the telescopic screw 533 extends vertically and is rotatably connected to the connecting seat 532; the telescopic screw nut 534 is slidably connected in the groove 535 and cooperates with the telescopic screw 533; the blade 531 is connected to the telescopic screw nut 534.

[0080] Specifically, in this embodiment, the height of the blade 531 is adjusted by rotating the telescopic screw 533, thus making it suitable for cutting plates of different specifications (thicknesses) and applicable to a wider range of applications.

[0081] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A PP sheet production line, characterized in that: include: Extruder; A three-roll calender is located behind the extruder; A front cooling roller mill is located below the three-roll calender; the front cooling roller mill includes a first frame, a plurality of first cooling rollers, a first drive unit, and a lifting mechanism; along the width direction of the first frame, the plurality of first cooling rollers are spaced apart on the first frame, and the first cooling rollers are rotatably connected to the first frame; the first drive unit is connected to the first frame and is used to drive the plurality of first cooling rollers to rotate synchronously; the output end of the lifting mechanism is connected to the first frame; A multi-cooling station is located behind the front cooling roller mill; the multi-cooling station includes a second frame and multiple cooling roller groups; the multiple cooling roller groups are spaced apart along the width direction of the second frame; each cooling roller group includes two second cooling rollers spaced vertically apart; the second cooling rollers are rotatably connected to the second frame; the second cooling rollers of the multiple cooling roller groups rotate synchronously; two elevators are respectively connected to the three-roll calender and the multi-cooling station; A longitudinal slitting machine is located at the rear of the multiple cooling stations; the longitudinal slitting machine includes a third frame, a guide column, and multiple cutters; the guide column is rotatably connected to the third frame; along the axial direction of the guide column, the multiple cutters are spaced apart on the guide column, and the position of the cutters on the guide column is adjustable; The post-processing mechanism is located at the rear of the slitting machine.

2. The PP sheet production line according to claim 1, characterized in that: The extruder includes a plurality of first extruders and at least one second extruder; the first extruders and the second extruders have different output capacities.

3. The PP sheet production line according to claim 1, characterized in that: There are multiple slitting machines; the multiple slitting machines are arranged sequentially along the conveying direction of the sheet.

4. The PP sheet production line according to claim 1, characterized in that: The first drive unit includes a drive motor, a drive gear, multiple driven gears, and multiple transmission gears; the drive motor is connected to the drive gear; the driven gears and the transmission gears are rotatably connected to the first frame; the driven gears are coaxially connected to the first cooling roller; the drive gear meshes with the driven gears and adjacent driven gears through the transmission gears.

5. The PP sheet production line according to claim 1, characterized in that: The cooling roller assembly also includes an adjustment component; the adjustment component is used to adjust the distance between the two second cooling rollers.

6. The PP sheet production line according to claim 5, characterized in that: The multi-cooling station further includes a second drive unit and a transmission unit; one end of the two first cooling rollers is connected through the transmission unit, and the other end of one of them is connected to the first drive unit; the transmission unit includes two transmission wheels and a transmission component; the two transmission wheels are respectively connected to the two first cooling rollers, and the transmission component is wound around the two transmission wheels.

7. The PP sheet production line according to claim 6, characterized in that: The multi-cooling station also includes a moving component; the moving component includes a moving motor, a moving wheel, and a moving guide rail; the moving motor is located on one side of the second frame; the output end of the moving motor is connected to the moving wheel to drive the moving wheel to rotate; the moving wheel is provided with teeth, and the moving guide rail is provided with a rack, the teeth meshing with the rack.

8. The PP sheet production line according to claim 1, characterized in that: The slitting machine further includes two first adjusting components, which are respectively connected to cutters located at both ends of the guide post. Each first adjusting component includes a sliding groove, a first mounting base, an adjusting screw, an adjusting screw nut, and a first tightening screw. The sliding groove is disposed on the guide post and extends axially along the guide post. The first mounting base is sleeved on the guide post, and the cutter is connected to the first mounting base. The adjusting screw is coaxially disposed in the guide post. The adjusting screw nut cooperates with the adjusting screw and is slidably connected in the sliding groove. The first tightening screw connects the adjusting screw nut and the first mounting base.

9. The PP sheet production line according to claim 8, characterized in that: The slitting machine also includes a plurality of second adjusting components; each of the second adjusting components is correspondingly arranged with a cutter located in the middle of the guide post; each second adjusting component includes a second mounting base and a second tightening screw; the second mounting base is sleeved on the guide post; the second tightening screw passes through the second mounting base and presses against the outer wall of the guide post.

10. The PP sheet production line according to claim 9, characterized in that: The cutter includes a telescopic part and a blade; the telescopic part includes a connecting seat, a telescopic screw, and a telescopic screw nut; the connecting seat is provided with a groove extending vertically; the telescopic screw extends vertically and is rotatably connected to the connecting seat; the telescopic screw nut is slidably connected in the groove and cooperates with the telescopic screw; the blade is connected to the telescopic screw nut.

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