PET (Polyethylene Terephthalate) sheet rolling and pressing device and use method thereof

Abstract

The invention discloses a PET sheet calendering device and a using method thereof.The PET sheet calendering device comprises a calendering dust removal mechanism, the calendering dust removal mechanism comprises a workbench, the rear portions of the two sides of the top of the workbench are fixedly connected with first rectangular frames, and the front portions of the two sides of the top of the workbench are fixedly connected with second rectangular frames. According to the PET sheet calendering device and the using method thereof, a calendering dust removal mechanism and a lifting maintenance mechanism are used in a combined mode, through the arrangement of the two mechanisms, a T-shaped top plate can be integrally lifted through an air cylinder before work, and a third rotating rod and a second guide roller are rotated to be in an inclined vertical state through cooperation of the structures; maintenance and replacement are facilitated, meanwhile, the distance between the second guide roller and the first guide roller can be pre-adjusted, and meanwhile after the air cylinder drives the T-shaped top plate to descend subsequently, the dust storage box can be in butt joint with the bearing plate.

Description

Technical Field

[0001] The present invention relates to the technical field of PET sheet calendering, in particular to a PET sheet calendering device and a use method thereof. Background Art

[0002] PET sheet is a white material primarily composed of polyethylene terephthalate and polybutylene terephthalate. It is widely used in the textile, papermaking, food machinery, transportation, docking, medical, coal mining, and chemical industries. It is used in bearings, guides for food processing machine heads, pistons, screw coils, and other food jigs, parts, bearings for precision machinery, and electrical insulation materials. PET sheet requires calendering during production, but existing calendering equipment features upper and lower guide rollers that facilitate spacing adjustment. Patents have been filed to improve this.

[0003] For example, Chinese patent CN220741888U discloses a calendering device for processing PET sheets, comprising a machine platform, wherein the top surface of the machine platform is equipped with supporting pillars through bolts, and there are two groups of pillars, the outer peripheral surfaces of the pillars are provided with sliding holes for adjustment, and sliders for support are slidably installed inside the sliding holes, and support rollers for supporting PET sheets are rotatably installed between the two groups of sliders and between the two groups of pillars, and the top surfaces of the pillars are equipped with cover plates for sealing the sliding holes through screws. Through the design of the pillars, sliding holes, sliders, cover plates, electric push rods and support rollers, the spacing between the two groups of support rollers for supporting and guiding PET sheets can be adjusted, and it is convenient to adjust them automatically. The spacing between the two groups of support rollers can be adjusted without removing the support rollers one by one, which is convenient for supporting and guiding the PET sheets and improves the efficiency of adjustment.

[0004] Although the equipment in the above document facilitates quick and convenient adjustment of the upper and lower guide rollers, it still has obvious defects in actual use, such as:

[0005] Although this equipment can adjust the guide rollers, its actual use is still inconvenient like traditional equipment. When the guide rollers are calendering the PET sheet, since the PET sheet is in a relatively soft state at this time, impurities such as fluff in the air easily adhere to its surface. Then, after being pressed by the guide rollers, the fluff and other impurities are pressed into the interior of the PET sheet. After cooling and solidification, the interior of the PET sheet becomes turbid and has poor light transmittance. At the same time, the guide rollers of existing calendering equipment are mostly fixed, which makes maintenance and disassembly too cumbersome and inconvenient.

[0006] Therefore design now can improve a kind of PET sheet calendering device of maintenance effect and calendering quality to solve this type of defect. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the present invention provides a PET sheet rolling device and a method of using the same, which solves the problems that impurities are easily attached to the existing PET sheets during rolling and the equipment is inconvenient to maintain.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a PET sheet calendering device, including a calendering dust removal mechanism, the calendering dust removal mechanism includes a workbench, the rear parts of both sides of the top of the workbench are fixedly connected to the first rectangular frame, the front parts of both sides of the top of the workbench are fixedly connected to the second rectangular frame, the rear side of the inner cavity of the first rectangular frame is rotatably connected to the first rotating rod through a bearing member, and the front end of the first rotating rod passes through the first rectangular frame and the second rectangular frame in sequence and extends to the front part of the second rectangular frame, the surface of the first rotating rod and is fixedly connected to the first guide roller between the first rectangular frame and the second rectangular frame, the two first rotating rods are connected by a first pulley and a first belt transmission, the surface of the first rectangular frame on the left is fixedly connected to the first motor through a bracket, and the output shaft of the first motor is fixedly connected to the front end of the first rotating rod on the left, and a lifting and maintenance mechanism is installed on the top of the workbench.

[0009] Preferably, the surface of the workbench is fixedly connected to a guide sliding support frame through a fixed block, a positioning slide is slidably installed on the inner side of the guide sliding support frame, both sides of the top of the positioning slide are fixedly connected to load-bearing recesses through fixed blocks, the top of the guide sliding support frame is rotatably connected to a vertical threaded rod through an opening, the front of the positioning slide is fixedly connected to a sub-bracket, and the sub-bracket is threadedly connected to the vertical threaded rod, and both ends of the sub-bracket are fixedly connected to tooth plates.

[0010] Preferably, a linkage top frame is fixedly connected between the two first rectangular frames via a fixed plate, and the rear part of the inner cavity of the linkage top frame is rotatably connected to a transverse threaded rod through a bearing member, and the transverse threaded rod and the first rotating rod on the right are connected to the second belt transmission through a second pulley, and the surface of the transverse threaded rod is threadedly connected to a threaded sleeve, and the threaded sleeve is slidably connected to the inner wall of the linkage top frame.

[0011] Preferably, the front side of the bottom of the threaded sleeve is fixedly connected to the adsorption top plate through a bracket, the front side of the bottom of the linkage top frame is fixedly connected to the lower friction plate used in conjunction with the adsorption top plate through a fixing plate, and the front side of the bottom of the lower friction plate is fixedly connected to the support plate through a bracket.

[0012] Preferably, the lifting maintenance mechanism comprises a cylinder fixedly installed at the rear of the workbench, a T-shaped top plate fixedly connected to the top end of the cylinder, two bent rods fixedly connected to the two sides of the bottom of the T-shaped top plate, a hollow plate slidingly installed on the surface of the bent rods, a first spring sleeved on the surface of the bent rods between the hollow plate and the T-shaped top plate, and an arc pressing seat fixedly connected to the bottom end of the bent rods and extending to the inner side of the first rectangular frame.

[0013] Preferably, a front support plate is fixedly connected between the bottoms of the two hollow plates and located at the front of the workbench, two second rotating rods are rotatably connected to the two sides of the surface of the front support plate through openings, a third rotating rod is rotatably connected to the rear end of the second rotating rod through a rotating piece, and a second guide roller cooperatively used with the first guide roller is fixedly connected to the surface of the third rotating rod.

[0014] Preferably, a gear disc is rotatably connected to the two sides of the front support plate through a bearing piece, a bent rotating stand is fixedly connected to the rear of the gear disc, and the inner side of the bent rotating stand is rotatably connected to the surface of the third rotating rod, the two second rotating rods are drivingly connected through a third belt pulley and a third belt, a second motor is fixedly connected to the right side of the surface of the front support plate through a support, and the output shaft of the second motor is fixedly connected to the right second rotating rod through a shaft coupling.

[0015] Preferably, a dust storage box cooperatively used with the supporting plate is fixedly connected to the top of the front support plate through a support, a fur scraping shovel cooperatively used with the adsorption top plate is rotatably connected to the rear of the inner cavity of the dust storage box, and a second spring is fixedly connected between the fur scraping shovel and the inner wall of the dust storage box.

[0016] The application further discloses a use method of the PET sheet stretching and pressing device.

[0017] S1, turning and maintaining: before use, the whole lifting maintenance mechanism is lifted upward by the cylinder, and the second guide roller is turned and maintained for inspection;

[0018] S2, spacing adjustment: after the inspection, the load recess and the toothed plate are lifted to adjust the height by rotating the vertical threaded rod, so that the second guide roller has a corresponding spacing with the first guide roller;

[0019] S3, dust removal and pressing: the adsorption top plate is rubbed with the lower friction plate, and the adsorption top plate reciprocally moves on the top of the workbench to adsorb dust.

[0020] The application provides a PET sheet stretching and pressing device and a use method thereof.

[0021] (1) The PET sheet calendering device and its use method are to use the calendering dust removal mechanism and the lifting maintenance mechanism in combination. The two mechanisms can use the cylinder to lift the T-shaped top plate as a whole before working, and use the coordination between the structures to rotate the third rotating rod and the second guide roller to an inclined vertical state, which is convenient for maintenance and replacement. At the same time, the distance between the second guide roller and the first guide roller can be pre-adjusted. At the same time, after the cylinder drives the T-shaped top plate to descend, the ash storage box can be docked with the supporting plate. When the calendering work is carried out, the adsorption top plate and the lower friction plate are rubbed to generate static electricity, and the fluff on the top is adsorbed to reduce impurities falling on the top of the PET sheet, thereby improving the quality and light transmittance of the PET sheet and meeting the current use.

[0022] (2) The PET sheet rolling device and its use method are as follows: the gear discs are installed on both sides of the gear disc, and the gear discs are connected to the third rotating rod by using a curved rotating frame, and the gear discs are used in combination with a load-bearing recess, a tooth plate and an arc pressure seat. The arrangement of these structures can make the gear discs mesh with the tooth plate when the cylinder rises, thereby driving the third rotating rod and the second guide roller to flip vertically, which is convenient for maintenance and reduces the failure rate during rolling. When the cylinder descends, the gear disc can be reversed to drive the third rotating rod to return to a horizontal state. After one end of the third rotating rod enters the first rectangular frame, the arc pressure seat can dock and position one end of the third rotating rod. The staff does not need to perform tedious equipment installation throughout the process, which is convenient for the staff to use.

[0023] (3) The PET sheet calendering device and its use method are as follows: a linkage top frame is installed between the two second rectangular frames, and an adsorption top plate is installed on the inner side of the linkage top frame by using a transverse threaded rod, and is used in conjunction with a lower friction plate and a scraping shovel. The arrangement of these structures can use the rotating transverse threaded rod to drive the adsorption top plate to move back and forth during the calendering work, and the adsorption top plate will rub against the lower friction plate when moving, thereby generating static electricity on the surface. When passing through the top of the PET sheet, the top fluff is adsorbed to reduce the pressure of impurities. When the lower friction plate moves to the inside of the ash storage box and resets, the fluff on the bottom of the lower friction plate will be scraped off by the scraping shovel and stored in the inside of the ash storage box. After the T-shaped top plate rises, it can drive the ash storage box to separate from the support plate, thereby facilitating cleaning by the staff and effectively improving the quality of the product.

[0024] (4) The PET sheet rolling device and its use method are as follows: a positioning slide is installed on the surface of the workbench by using a guide slide support, and a load-bearing recess and a tooth plate are installed on the top of the positioning slide. The arrangement of these structures can use the vertical threaded rod to drive the load-bearing recess and the tooth plate to rise synchronously before the T-shaped top plate descends, so as to adjust the spacing, so that when the third rotating rod descends, it can first contact the load-bearing recess to block the position. At the same time, it can also ensure that the distance between the tooth plate, the gear plate and the load-bearing recess is constant, so that the third rotating rod can always rotate vertically to allow the gear plate to separate from the tooth plate, thereby ensuring the stability of the overall use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 It is a rear view of the calendering dust removal mechanism and the lifting maintenance mechanism structure of the present invention;

[0027] Figure 3 Schematic diagram of the calendering dust removal mechanism structure of the present invention;

[0028] Figure 4 is a cross-sectional view of the first rectangular frame and the second rectangular frame structure of the present invention;

[0029] Figure 5 Schematic diagram of the vertical threaded rod, sub-bracket and tooth plate structure of the present invention;

[0030] Figure 6 It is a cross-sectional view of the linkage top frame structure of the present invention;

[0031] Figure 7 A schematic diagram of the lifting and maintenance mechanism structure of the present invention;

[0032] Figure 8 Schematic diagram of the bent rod, first spring and arc pressure seat structure of the present invention;

[0033] Figure 9 It is a cross-sectional view of the ash storage box structure of the present invention;

[0034] Figure 10 A schematic diagram of the front support plate, the third belt and the second motor structure of the present invention;

[0035] Figure 11 It is a schematic diagram of the second rotating rod, the third rotating rod and the second guide roller structure of the present invention.

[0036] In the figure: 1, calendering dust removal mechanism; 2, lifting maintenance mechanism; 101, workbench; 102, first rectangular frame; 103, second rectangular frame; 104, first rotating rod; 105, first guide roller; 106, first pulley; 107, first belt; 108, first motor; 109, guide slide support; 110, positioning slide; 111, load-bearing recess; 112, vertical threaded rod; 113, sub-bracket; 114, tooth plate; 115, linkage top frame; 116, horizontal threaded rod; 117, second pulley; 118, second belt; 11 9. Threaded sleeve; 120. Adsorption top plate; 121. Lower friction plate; 122. Support plate; 201. Cylinder; 202. T-shaped top plate; 203. Bent rod; 204. Hollow plate; 205. First spring; 206. Arc pressure seat; 207. Front support plate; 208. Second rotating rod; 209. Third rotating rod; 210. Second guide roller; 211. Gear plate; 212. Bent rotating frame; 213. Third pulley; 214. Third belt; 215. Second motor; 216. Ash storage box; 217. Scraping shovel; 218. Second spring. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] See also Figures 1-11 , the present invention provides a technical solution: a PET sheet calendering device, including a calendering dust removal mechanism 1;

[0039] Please refer to Figure 3 、 Figure 4 、 Figure 5 and Figure 6The drawing shows the overall structure of the calender dust removal mechanism 1, which comprises a workbench 101, the rear of both sides of the top of the workbench 101 is fixedly connected with a first rectangular frame 102, the front of both sides of the top of the workbench 101 is fixedly connected with a second rectangular frame 103, the rear side of the inner cavity of the first rectangular frame 102 is rotatably connected with a first rotating rod 104 through a bearing piece, and the front end of the first rotating rod 104 extends to the front of the second rectangular frame 103 in sequence and penetrates the first rectangular frame 102 and the second rectangular frame 103, a first guide roller 105 is fixedly connected to the surface of the first rotating rod 104 and located between the first rectangular frame 102 and the second rectangular frame 103, the two first rotating rods 104 are drivingly connected through a first belt pulley 106 and a first belt 107, the surface of the left first rectangular frame 102 is fixedly connected with a first motor 108 through a support, the first motor 108 is a servo motor, and the output shaft of the first motor 108 is fixedly connected with the front end of the left first rotating rod 104, a lifting maintenance mechanism 2 is installed on the top of the workbench 101, a guide sliding support frame 109 is fixedly connected to the surface of the workbench 101 through a fixed block, a positioning sliding frame 110 is slidingly installed on the inner side of the guide sliding support frame 109, load-bearing recesses 111 are fixedly connected to the top of both sides of the positioning sliding frame 110 through fixed blocks, and the inner side of the load-bearing recesses 111 is smeared with lubricating grease which will not have hard friction with a third rotating rod 209, a vertical threaded rod 112 is rotatably connected to the top of the guide sliding support frame 109 through an opening, a branch support 113 is fixedly connected to the front of the positioning sliding frame 110 and is threadedly connected with the vertical threaded rod 112, toothed plates 114 are fixedly connected to both ends of the branch support 113, a linkage top frame 115 is fixedly connected between the two first rectangular frames 102 through a fixed plate, a horizontal threaded rod 116 is rotatably connected to the rear of the inner cavity of the linkage top frame 115 through a bearing piece, the horizontal threaded rod 116 is drivingly connected with the right first rotating rod 104 through a second belt pulley 117 and a second belt 118, a threaded sleeve plate 119 is threadedly connected to the surface of the horizontal threaded rod 116 and slidingly connected with the inner wall of the linkage top frame 115, an adsorption top plate 120 is fixedly connected to the front side of the bottom of the threaded sleeve plate 119 through a support, the opposite sides of the adsorption top plate 120 and a lower friction plate 121 are wrapped with cloth made of polyester fiber material which can generate static electricity, the lower friction plate 121 is fixedly connected to the front side of the bottom of the lower friction plate 121 through a fixed plate and is used in cooperation with the adsorption top plate 120, and a supporting plate 122 is fixedly connected to the front side of the bottom of the lower friction plate 121 through a support.

[0040] Please refer to Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11, showing the overall structure of the lifting maintenance mechanism 2, the lifting maintenance mechanism 2 includes a cylinder 201, and the cylinder 201 is fixedly installed at the rear of the workbench 101, the top of the cylinder 201 is fixedly connected to a T-shaped top plate 202, both sides of the bottom of the T-shaped top plate 202 are fixedly connected to a bent rod 203, a hollow plate 204 is slidably installed on the surface of the bent rod 203, a first spring 205 is sleeved on the surface of the bent rod 203 and located between the hollow plate 204 and the T-shaped top plate 202, the bottom end of the bent rod 203 is fixedly connected to an arc pressure seat 206, and the arc pressure seat 206 The inner side is coated with grease so as not to cause hard friction with the third rotating rod 209, and the arc pressure seat 206 extends to the inner side of the first rectangular frame 102. A front support plate 207 is fixedly connected between the bottoms of the two hollow plates 204, and the front support plate 207 is located in the front of the workbench 101. Both sides of the surface of the front support plate 207 are rotatably connected to the second rotating rod 208 through openings. The rear end of the second rotating rod 208 is rotatably connected to the third rotating rod 209 through a rotating member. The second rotating rod 208 and the third rotating rod 209 are connected by a damping shaft so as not to rotate easily. The second motor 215 will drive the second rotating rod 208 and the third rotating rod 209 to the initial state each time, ensuring that the third rotating rod 209 can rotate, and the surface of the third rotating rod 209 is fixedly connected to the second guide roller 210 used in conjunction with the first guide roller 105, and both sides of the front support plate 207 are rotatably connected to the gear plate 211 through the bearing member, and the rear part of the gear plate 211 is fixedly connected to the curved rotating frame 212, and the inner side of the curved rotating frame 212 is rotatably connected to the surface of the third rotating rod 209, and the two second rotating rods 208 are connected by the third pulley 213 and the third belt 2 14 transmission connection, the right side of the surface of the front support plate 207 is fixedly connected to the second motor 215 through a bracket, the second motor 215 is a servo motor, and the output shaft of the second motor 215 is fixedly connected to the second rotating rod 208 on the right side through a coupling, the top of the front support plate 207 is fixedly connected to the ash storage box 216 used in conjunction with the supporting plate 122 through a bracket, the rear part of the inner cavity of the ash storage box 216 is rotatably connected to the scraping shovel 217 used in conjunction with the adsorption top plate 120, and a second spring 218 is fixedly connected between the scraping shovel 217 and the inner wall of the ash storage box 216.

[0041] The present invention also discloses a method for using a PET sheet calendering device, which specifically comprises the following steps:

[0042] S1. Turnover maintenance: Before use, use the cylinder 201 to lift the entire lifting maintenance mechanism 2 upward, and turn over the second guide roller 210 for maintenance inspection;

[0043] S2. Spacing adjustment: After the inspection is completed, rotate the vertical threaded rod 112 to drive the load-bearing recess 111 and the tooth plate 114 to rise and adjust the height so that the second guide roller 210 and the first guide roller 105 have a corresponding spacing;

[0044] S3, dust removal and calendering: the top adsorption plate 120 is rubbed against the lower friction plate 121 and reciprocates on the top of the workbench 101 to adsorb dust.

[0045] The method for using the above-mentioned PET sheet calendering device includes the following more specific steps:

[0046] After the upper and lower parts of the trolley 202 are lowered, the upper and lower parts of the trolley 203 are lowered, and the trolley 202 is rotated 216 degrees to rotate.

[0047] S2. Spacing adjustment: After the maintenance of the second guide roller 210 and the first guide roller 105 is completed, the spacing between the second guide roller 210 and the first guide roller 105 is adjusted after the second guide roller 210 is lowered. First, according to the calendering thickness of the PET sheet, the vertical threaded rod 112 is rotated to use the limit between the positioning slide 110 and the guide slide support 109 to push the load-bearing recess 111 and the tooth plate 114 to rise synchronously, and stop after rising to the specified height. Then, the cylinder 201 is started to drive the T-shaped top plate 202 to descend, and after the front support plate 207 descends to allow the gear plate 211 to re-engage with the tooth plate 114, the downward force is used to drive the second guide roller 210 and the gear plate 211 to rotate clockwise, and after the gear plate 211 and the tooth plate 114 are re-engaged, the downward force is used to drive the second guide roller 210 and the gear plate 211 to rotate clockwise. After the tooth plate 114 is separated, the second guide roller 210 returns to the horizontal state. As the front support plate 207 descends, the second rotating rod 208 stops descending after contacting the inner side of the load-bearing recess 111. At this time, the rear end of the third rotating rod 209 is located inside the second rectangular frame 103. As the cylinder 201 drives the T-shaped top plate 202 to continue to descend, the first spring 205 will be compressed to position the hollow plate 204, and then the bent rod 203 will be pressed down again until the arc pressure seat 206 contacts and is installed with one end of the third rotating rod 209 inside the second rectangular frame 103. At this time, the second guide roller 210 is completely fixed, and there is a suitable distance between the second guide roller 210 and the first guide roller 105.

[0048] S3, dust removal and calendering: after the installation is completed, the second motor 215 is started to rotate synchronously with the first motor 108. At this time, the second guide roller 210 and the first guide roller 105 are respectively rotated under the transmission action of the third pulley 213, the third belt 214, the first pulley 106 and the first belt 107. Then the PET sheet is pulled through the first guide roller 105 and the second guide roller 210 for calendering. During the calendering process, the first rotating rod 104 drives the transverse threaded rod 116 to rotate by the transmission of the second belt 118 and the second pulley 117. At this time, the adsorption top plate 120 moves back and forth under the limit of the threaded sleeve plate 119. Whenever the adsorption top plate 120 and the lower friction plate 12 When the top plate 120 is rubbed, static electricity will be generated on the surface. When the adsorption top plate 120 moves from the top of the PET sheet, it can adsorb the fluff and other dust on the top. When the adsorption top plate 120 moves to the front, it will first press the scraping shovel 217 to flip downward. After the adsorption top plate 120 enters the ash storage box 216, the scraping shovel 217 will flip up again due to elastic force. Then, when the adsorption top plate 120 moves backward, it will be supported by the scraping shovel 217. Then, the scraping shovel 217 scrapes the fluff on the bottom of the adsorption top plate 120 and accumulates it in the ash storage box 216. After the work is completed, the force of the cylinder 201 when it rises drives the ash storage box 216 to separate from the supporting plate 122, thereby facilitating the cleaning of fluff and dust.

[0049] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A PET sheet calendering device, comprising a calendering dust removal mechanism (1), characterized in that: The calendering dust removal mechanism (1) comprises a workbench (101), the rear portions of both sides of the top of the workbench (101) are fixedly connected to first rectangular frames (102), the front portions of both sides of the top of the workbench (101) are fixedly connected to second rectangular frames (103), the rear side of the inner cavity of the first rectangular frame (102) is rotatably connected to a first rotating rod (104) via a bearing, and the front end of the first rotating rod (104) sequentially passes through the first rectangular frame (102) and the second rectangular frame (103) and extends to the front portion of the second rectangular frame (103), the first rotating rod A first guide roller (105) is fixedly connected to the surface of the first rectangular frame (104) and is located between the first rectangular frame (102) and the second rectangular frame (103); the two first rotating rods (104) are connected to each other by a first pulley (106) and a first belt (107); a first motor (108) is fixedly connected to the surface of the first rectangular frame (102) on the left side through a bracket; and an output shaft of the first motor (108) is fixedly connected to the front end of the first rotating rod (104) on the left side; and a lifting maintenance mechanism (2) is installed on the top of the workbench (101).

2. The PET sheet rolling device according to claim 1, characterized in that: The surface of the workbench (101) is fixedly connected to a guide slide support (109) via a fixed block, a positioning slide (110) is slidably mounted on the inner side of the guide slide support (109), both sides of the top of the positioning slide (110) are fixedly connected to a load-bearing recess (111) via a fixed block, the top of the guide slide support (109) is rotatably connected to a vertical threaded rod (112) via an opening, a sub-bracket (113) is fixedly connected to the front of the positioning slide (110), and the sub-bracket (113) is threadedly connected to the vertical threaded rod (112), and both ends of the sub-bracket (113) are fixedly connected to tooth plates (114).

3. The PET sheet rolling device according to claim 2, characterized in that: A linkage top frame (115) is fixedly connected between the two first rectangular frames (102) via a fixing plate, a rear portion of the inner cavity of the linkage top frame (115) is rotatably connected to a transverse threaded rod (116) via a bearing member, the transverse threaded rod (116) and the right first rotating rod (104) are connected to each other via a second pulley (117) and a second belt (118), a surface of the transverse threaded rod (116) is threadedly connected to a threaded sleeve (119), and the threaded sleeve (119) is slidably connected to the inner wall of the linkage top frame (115).

4. The PET sheet rolling device according to claim 3, characterized in that: The front side of the bottom of the threaded sleeve (119) is fixedly connected to the adsorption top plate (120) via a bracket, the front side of the bottom of the linkage top frame (115) is fixedly connected to the lower friction plate (121) used in conjunction with the adsorption top plate (120) via a fixing plate, and the front side of the bottom of the lower friction plate (121) is fixedly connected to the supporting plate (122) via a bracket.

5. The PET sheet rolling device according to claim 4, characterized in that: The lifting maintenance mechanism (2) includes a cylinder (201), and the cylinder (201) is fixedly installed at the rear of the workbench (101), the top end of the cylinder (201) is fixedly connected to a T-shaped top plate (202), and both sides of the bottom of the T-shaped top plate (202) are fixedly connected to a bent rod (203), a hollow plate (204) is slidably installed on the surface of the bent rod (203), a first spring (205) is sleeved on the surface of the bent rod (203) and located between the hollow plate (204) and the T-shaped top plate (202), and the bottom end of the bent rod (203) is fixedly connected to an arc pressure seat (206), and the arc pressure seat (206) extends to the inner side of the first rectangular frame (102).

6. The PET sheet rolling device according to claim 5, characterized in that: A front support plate (207) is fixedly connected between the bottoms of the two hollow plates (204), and the front support plate (207) is located in front of the workbench (101). Both sides of the surface of the front support plate (207) are rotatably connected to a second rotating rod (208) through an opening. The rear end of the second rotating rod (208) is rotatably connected to a third rotating rod (209) through a rotating member, and the surface of the third rotating rod (209) is fixedly connected to a second guide roller (210) used in conjunction with the first guide roller (105).

7. The PET sheet rolling device according to claim 6, characterized in that: Both sides of the front support plate (207) are rotatably connected to a gear plate (211) via a bearing member, a curved rotating frame (212) is fixedly connected to the rear of the gear plate (211), and the inner side of the curved rotating frame (212) is rotatably connected to the surface of the third rotating rod (209), the two second rotating rods (208) are connected to each other by a third pulley (213) and a third belt (214), the right side of the surface of the front support plate (207) is fixedly connected to a second motor (215) via a bracket, and the output shaft of the second motor (215) is fixedly connected to the second rotating rod (208) on the right side via a coupling.

8. The PET sheet rolling device according to claim 7, characterized in that: The top of the front support plate (207) is fixedly connected to an ash storage box (216) used in conjunction with the support plate (122) through a bracket, and the rear part of the inner cavity of the ash storage box (216) is rotatably connected to a scraping shovel (217) used in conjunction with the adsorption top plate (120), and a second spring (218) is fixedly connected between the scraping shovel (217) and the inner wall of the ash storage box (216).

9. A method for using a PET sheet rolling device, characterized in that: The specific steps include: S1. Turnover maintenance: Before use, use the cylinder (201) to lift the entire lifting maintenance mechanism (2) upward, and turn over the second guide roller (210) to perform maintenance inspection first; S2. Spacing adjustment: After the inspection is completed, the vertical threaded rod (112) is rotated to drive the load-bearing recess (111) and the tooth plate (114) to rise and adjust the height so that the second guide roller (210) and the first guide roller (105) have a corresponding spacing; S3, dust removal and calendering: the adsorption top plate (120) is rubbed with the lower friction plate (121), and reciprocated on the top of the workbench (101) to adsorb dust.

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