CN219731421U - Cloth feeding device of padding mangle - Google Patents

Abstract

The utility model relates to a cloth feeding device of a padding machine, which comprises a frame and scraping plates, wherein the number of the scraping plates is two, the two scraping plates are spaced to form a gap for cloth to pass through, one end of each scraping plate in the width direction is rotationally connected with the frame, the frame is also connected with a rotating assembly, and the rotating assembly is used for driving the scraping plates to rotate so as to change the distance between the two scraping plates. The angle of the scraping plate relative to the cloth is changed by rotating the scraping plate, and the distance between the two scraping plates is changed, so that the cloth with different thicknesses is suitable, and the application range is improved.

Description

Cloth feeding device of padding mangle

Technical Field

The utility model relates to the field of cloth dyeing equipment, in particular to a cloth feeding device of a padding machine.

Background

Cotton fibers have good hygroscopicity and moisture retention, so cotton fabrics are used for producing clothes and are often dyed by a padding machine.

The Chinese patent with the publication number of CN211546937U discloses a cloth cleaning device of a padding machine, which relates to the technical field of textile dyeing, and comprises a cloth inlet end and a cloth outlet end, wherein the cloth inlet end and the cloth outlet end are arranged in a dye vat; the cleaning roller set comprises two brush rollers, the two brush rollers are arranged along the length direction of the separation cover and are rotationally connected with the separation cover, the two brush rollers are arranged in parallel up and down, a gap for cloth to pass through exists between the two brush rollers, and the gap corresponds to the cloth inlet.

The cleaning device is arranged in the dyeing tank and is used for cleaning off the cloth scraps attached to the surface of the cloth, so that the amount of the cloth scraps attached to the surface of the cloth is reduced, the dyeing rate of the cloth is improved, and the quality of the cloth is improved.

To above-mentioned related art, the distance is fixed between two brush rollers, can't clear up different thickness cloths, and application scope is less.

Disclosure of Invention

In order to clean cloth with different thicknesses, the application range of the cleaning device to the cloth is improved.

The cloth feeding device of the padding machine adopts the following technical scheme:

the utility model provides a cloth feeding device of padding mangle, includes the frame, locates the scraper blade of frame, the scraper blade is equipped with two, scraper blade length direction is unanimous with cloth width direction, and two the scraper blade interval forms the space that supplies the cloth to pass through, the scraper blade rotates along its width direction one end and connects in the frame, the scraper blade other end contacts with the cloth, the frame still is connected with rotating assembly, rotating assembly is used for driving the scraper blade rotation so that change the distance between two scrapers.

Through adopting above-mentioned technical scheme, when cloth advances the cloth to the padding machine, through the clearance of scraper blade to the cloth to this batting and magazine on reducing cloth surface improve the dyeing effect of cloth with this, and when the cloth thickness that the scraper blade cleared up is different, through rotating the scraper blade, with this angle that changes the scraper blade for the cloth, and change the distance between two scraper blades, with this cloth that is suitable for different thickness, improve application scope.

Optionally, the frame still is connected with and beats subassembly, dust-proof case, feed inlet, the discharge gate that supplies the cloth to pass through are offered respectively to dust-proof case opposite both sides lateral wall, beat the subassembly and connect in the dust-proof case, the scraper blade is connected in the dust-proof case, beat the subassembly and distribute along cloth direction of transportation with the scraper blade in proper order, dust-proof case one side still communicates there is the exhaust tube, and the exhaust tube other end intercommunication has the aspiration pump, it is used for beating the cloth to beat the subassembly.

Through adopting above-mentioned technical scheme, beat the subassembly and pat the cloth for batting and impurity drop from the cloth surface, impurity and batting that drops from the cloth surface get into the exhaust tube by the suction effect of aspiration pump, and discharge the dust-proof case through the exhaust tube, with further batting and the magazine on the cloth surface that reduces this, improve cloth dyeing effect.

Optionally, the dust-proof box has offered the slide hole along cloth width one side, and the scraper blade is connected with the slider along its length direction one end, the slider is in the slide hole along slide hole length direction sliding connection, when the scraper blade rotates, the slider is located the slide hole all the time.

Through adopting above-mentioned technical scheme, promote the slider along sliding hole length direction in the sliding hole slip to this drives the scraper blade rotation, makes the contained angle between scraper blade and the cloth change, and then changes the distance between the scraper blade.

Optionally, the rotating assembly includes ratchet, the ratchet rotates and connects in the dust-proof box, the ratchet meshes in the ratchet, the ratchet all is connected with the ratchet and is followed cloth width direction one side lateral wall with the dust-proof box, the scraper blade is connected in the ratchet along its length direction one end, dust-proof box one side still is connected with the slide bar, slide bar length direction is unanimous with cloth width direction, the ratchet is followed cloth width direction sliding connection in the slide bar, the ratchet rotates and connects in the slide bar.

Through adopting above-mentioned technical scheme, the scraper blade rotates and drives the ratchet and rotate, and when the scraper blade rotates to required angle, ratchet and ratchet meshing, with this make the ratchet connect in the dust-proof case steadily, and then make the scraper blade connect in the dust-proof incasement steadily, when the slider removes to slide hole one end, and the scraper blade angle adjustment reaches the limit, drive ratchet along cloth width direction sliding connection in the slide bar, make the ratchet keep away from the ratchet, with this ratchet drive scraper blade of being convenient for resets, through ratchet and ratchet meshing, the scraper blade is connected in the dust-proof incasement steadily, with this cleaning effect of scraper blade to the cloth has been improved.

Optionally, the movable rod thread bush is provided with a locking plate, the locking plate is arranged on one side of the ratchet far away from the dust box, and the locking plate is used for locking the position of the ratchet on the sliding rod.

Through adopting above-mentioned technical scheme, when adjusting scraper blade angle, ratchet and ratchet meshing, ratchet one side and dust-proof case lateral wall butt, ratchet opposite side and locking plate butt to this makes the ratchet connect on the slide bar steadily and with ratchet meshing, when the ratchet need drive the scraper blade and reset, rotates the locking plate, makes locking plate along slide bar length direction sliding connection in the slide bar, so that the ratchet is kept away from to this ratchet, the simple operation.

Optionally, the assembly of patting is including rotating the live-action roller of connecting in the dust proof case, connecting in a plurality of rapping bars of live-action roller, the length direction of live-action roller is unanimous with cloth width direction, the rapping bar length direction is unanimous with cloth width direction, a plurality of the rapping bars are along live-action roller circumference interval distribution, the rapping bar is kept away from live-action roller one side and is contacted with the cloth.

Through adopting above-mentioned technical scheme, the live-rollers rotates, drives and beats the pole and rotate for a plurality of poles of beating are patted the cloth in proper order, with this batting and impurity that reduces the cloth surface.

Optionally, the flexible layer is connected with to the pole one side of beating away from the live-action roller, flexible layer is kept away from pole one side and the contact of cloth.

By adopting the technical scheme, the flexible layer is additionally arranged, so that the abrasion to the cloth when the beating rod beats the cloth can be reduced, and the quality of the cloth is improved.

Optionally, the spread groove has been seted up to the dust proof case, spread groove length direction is unanimous with cloth thickness direction, dust proof case lateral wall is connected with connecting block, threaded rod length direction and cloth thickness direction unanimous, the threaded rod rotates to be connected in the spread groove inner wall, the connecting block is located in the spread groove along cloth thickness direction sliding connection, the threaded rod is located to the connecting block thread bush, the threaded rod is connected with the rotating member along its length direction one end, the rotating member is used for driving the threaded rod and rotates, the rotating roller rotates along its length direction one end and connects in the connecting block.

Through adopting above-mentioned technical scheme, when beating the subassembly to the cloth of different thickness, the rotation piece drives the threaded rod and rotates, make the connecting block slide along cloth thickness direction in the spread groove, and then drive the live-rollers and remove along cloth thickness direction, with this distance between change live-rollers and the cloth, and then adjust the effect of beating of pole to the cloth, when cloth thickness is thicker, through reducing the distance between live-rollers and the cloth, improve the beating force of beating the pole to the cloth, thereby be suitable for thicker cloth, avoid as far as possible leading to the clearance effect of beating the pole to the cloth relatively poor because of the cloth is too thick, when the cloth is thinner, increase the distance between live-rollers and the cloth, make the beating force of beating the pole to the cloth in suitable range, avoid the beating force of beating the pole to the cloth too big and then increase the wearing and tearing of beating the pole to the cloth as far as possible.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. when cloth enters the padding machine, the cloth is cleaned by the scraping plates, so that flocks and magazines on the surface of the cloth are reduced, the dyeing effect of the cloth is improved, when the thickness of the cloth cleaned by the scraping plates is different, the scraping plates are rotated, so that the angle of the scraping plates relative to the cloth is changed, the distance between the two scraping plates is changed, and the padding machine is suitable for the cloth with different thickness, and the application range is improved;

2. the scraper rotates to drive the ratchet wheel to rotate, and when the scraper rotates to a required angle, the ratchet wheel is meshed with the ratchet wheel, so that the ratchet wheel is stably connected to the dust box, the scraper is further stably connected to the dust box, when the sliding block moves to one end of the sliding hole, and the angle of the scraper reaches the limit, the ratchet wheel is driven to be slidingly connected to the sliding rod along the width direction of the cloth, so that the ratchet wheel is far away from the ratchet wheel, the ratchet wheel drives the scraper to reset, and the scraper is stably connected to the dust box through the meshing of the ratchet wheel and the ratchet wheel, so that the cleaning effect of the scraper on the cloth is improved;

3. when the component of beating beats the cloth of different thickness, the rotating member drives the threaded rod to rotate for the connecting block slides along cloth thickness direction in the spread groove, and then drives the rotor roll and remove along cloth thickness direction, with this distance between change rotor roll and the cloth, and then adjust the effect of beating of pole to the cloth, when cloth thickness is thicker, through reducing the distance between rotor roll and the cloth, improve the beating force of beating the pole to the cloth, with this is suitable for thicker cloth, avoid as far as possible leading to the clearance effect of beating the pole to the cloth relatively poor because of the cloth is too thick, when the cloth is thinner, increase the distance between rotor roll and the cloth, make the beating force of beating the pole to the cloth in suitable range, avoid the beating force of beating the pole to the cloth too big and then increase the wearing and tearing of beating the pole to the cloth as far as possible.

Drawings

Fig. 1 is a perspective view of the present embodiment.

Fig. 2 is a top view of the present embodiment.

Fig. 3 is a sectional view in the A-A direction in fig. 2 of the present embodiment.

Fig. 4 is a sectional view in the B-B direction in fig. 2 of the present embodiment.

Fig. 5 is an enlarged view of a portion C in fig. 1 of the present embodiment.

Reference numerals illustrate: 100. a frame; 110. a first cloth guide roller; 120. a second cloth guide roller; 200. a dust box; 210. a feed inlet; 220. a discharge port; 230. an exhaust pipe; 240. a collection box; 250. an air extracting pump; 260. a connecting groove; 270. a connecting block; 280. a threaded rod; 290. a second motor; 300. a sliding hole; 310. a slide bar; 311. a locking plate; 320. a first motor; 400. a scraper; 410. a slide block; 500. beating the assembly; 510. a rotating roller; 520. beating the rod; 521. a first lever; 522. a second lever; 523. a flexible layer; 600. a rotating assembly; 610. a ratchet wheel; 620. a ratchet.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-5.

The embodiment of the utility model discloses a cloth feeding device of a padding machine. Referring to fig. 1 and 2, the cloth feeding device of the pad dyeing machine includes a frame 100, a dust box 200, the frame 100 being for connection with the pad dyeing machine, the dust box 200 being connected to the frame 100.

Referring to fig. 3 and 4, two scrapers 400 are connected to the inner wall of the dust box 200, the length direction of the scrapers 400 is identical to the cloth width direction, the width direction of the dust box 200 is identical to the cloth thickness direction, and the length direction of the dust box 200 is identical to the cloth width direction. The top of the dust box 200 is provided with a feed inlet 210 for feeding material, and the bottom of the dust box 200 is provided with a discharge outlet 220 for feeding material. The two scrapers 400 are spaced apart in the width direction of the dust box 200, and the two scrapers 400 are spaced apart to form a gap through which cloth passes. When the thickness of cloth cleaned by the scraper 400 is different, the scraper 400 is rotated, and the distance between the scrapers 400 is adjusted by changing the included angle between the scrapers 400 and the cloth, so that the scraper is suitable for cloth with different thickness.

Referring to fig. 3 and 4, the frame 100 is further connected with a first cloth guide roller 110 and a second cloth guide roller 120, and the first cloth guide roller 110, the dust box 200, and the second cloth guide roller 120 are sequentially distributed along the cloth transport direction. The first cloth guide roller 110 is used to guide cloth into the dust box 200, and the second cloth guide roller 120 is used to guide cloth into the pad dyeing machine. The inner wall of the dust box 200 is also connected with a flapping assembly 500, the flapping assembly 500 comprises a rotating roller 510 and a flapping rod 520, the length direction of the rotating roller 510 is consistent with the length direction of the dust box 200, and the rotating roller 510 is rotatably connected with the dust box 200. The dust box 200 is connected to the first motor 320 along one side outer wall of the length direction thereof, and one end of the rotating roller 510 is connected to an output shaft of the first motor 320. The number of the beating rods 520 is four, the four beating rods 520 are distributed at intervals along the circumferential direction of the rotating roller 510, the beating rods 520 comprise a first rod 521 and a second rod 522, the length direction of the first rod 521 is consistent with the radial direction of the rotating roller 510, and the length direction of the second rod 522 is consistent with the length direction of the rotating roller 510. The first bars 521 are provided in two and are respectively connected to both ends of the rotating roller 510, and the second bars 522 are respectively fixedly connected to both first bars 521 at both ends thereof, and the flapping bar 520 is -shaped. A flexible layer 523 is connected to the second lever 522 at a side away from the rotating roller 510, and the flexible layer 523 is a rubber layer. After the first cloth guide roller 110 guides the cloth into the dust box 200, the first motor 320 drives the rotating roller 510 to rotate, and the beating rod 520 rotates along with the rotating roller 510 and beats the cloth, so that the flock and impurities on the surface of the cloth are reduced, and the dyeing effect of the cloth is improved.

Referring to fig. 2 and 3, the dust box 200 is connected with an air suction pipe 230, the air suction pipe 230 is connected with an air suction pump 250 at a side far from the dust box 200, the air suction pump 250 is connected to the frame 100, the frame 100 is connected with a collecting box 240, the collecting box 240 is arranged between the dust box 200 and the air suction pump 250, and the air suction pipe 230 is connected with the collecting box 240. The suction pump 250 sucks air from the dust box 200, and the flock and the impurities shaken off from the surface of the cloth enter the suction pipe 230 and enter the collecting box 240 along the suction pipe 230 for collecting, thereby facilitating the centralized treatment of the flock and the impurities.

Referring to fig. 4 and 5, the dust box 200 is provided with a connection groove 260 at one side along a length direction thereof, the length direction of the connection groove 260 is identical to a width direction of the dust box 200, the dust box 200 is connected with a connection block 270 and a threaded rod 280, and the connection block 270 is slidably connected in the connection groove 260 along the width direction of the dust box 200. The length direction of the threaded rod 280 is consistent with the width direction of the dust box 200, and the threaded rod 280 is rotatably connected to the inner wall of the connection groove 260. The connecting block 270 is sleeved on the threaded rod 280 in a threaded manner, the dust box 200 is further connected with a rotating piece, the rotating piece is a second motor 290, and one end of the threaded rod 280 is connected to an output shaft of the second motor 290. The rotating roller 510 is rotatably coupled to the connection block 270 along one end of the length direction thereof, and the first motor 320 is coupled to the connection block 270. When the cloth thickness entering the dust box 200 is different, the second motor 290 drives the threaded rod 280 to rotate, so that the connecting block 270 is slidably connected in the connecting groove 260 along the width direction of the dust box 200, and the rotating roller 510 moves along the width direction of the dust box 200 along the connecting block 270, so that the flapping force of the flapping rod 520 to the cloth with different thickness is in a proper range.

Referring to fig. 3 and 5, the scrapers 400 are inclined, one ends of the scrapers 400 in the width direction thereof are rotatably connected to the inner wall of the dust box 200, the other ends of the scrapers 400 are inclined upward, and the distance between the two scrapers 400 increases gradually from top to bottom in the vertical direction. The dust box 200 is connected with a rotating assembly 600 along one side outer wall of the length direction thereof, and the rotating assembly 600 is used for driving the scraping plate 400 to rotate. The dust box 200 is provided with sliding holes 300 along both side walls in the length direction thereof, the sliding holes 300 are arc-shaped holes, and the convex arc sides of the sliding holes 300 face the rotating roller 510. The scraper 400 is fixedly connected with a slider 410 along both sides of the length direction thereof, and the other end of the slider 410 passes through and is slidably connected to the sliding hole 300. The slider 410 is disposed at one end of the blade 400 near the cloth. The slider 410 is slidably coupled to the sliding hole 300 along the length direction of the sliding hole 300.

Referring to fig. 5, the rotating assembly 600 includes a ratchet 610 and a ratchet 620, the ratchet 610 is rotatably connected to an outer wall of the dust box 200 along a length direction of the dust box 200, a connecting rod is connected to a side of the ratchet 610 adjacent to the dust box 200, and a length direction of the connecting rod is identical to a length direction of the dust box 200. One end of the connecting rod is connected to the ratchet 610, and the other end of the connecting rod passes through the sidewall of the dust box 200 to be fixedly connected with the scraper 400. The dust box 200 is fixedly connected with a sliding rod 310 along one side outer wall of the length direction thereof, the length direction of the sliding rod 310 is consistent with the length direction of the dust box 200, and the ratchet 620 is slidably connected to the sliding rod 310 along the length direction of the dust box 200. The sliding rod 310 is provided with a thread section, the sliding rod 310 is sleeved with a locking plate 311 in a thread mode, the locking plate 311 is arranged on one side, away from the dust box 200, of the ratchet 620, and the locking plate 311 is used for locking the ratchet 620 to the sliding rod 310.

The sliding block 410 is driven to slide in the sliding hole 300, the sliding block 410 drives the scraping plate 400 to rotate, the scraping plate 400 rotates and drives the connecting rod and the ratchet wheel 610 to rotate, so that the included angle between the scraping plate 400 and the cloth is adjusted, and the ratchet wheel 610 is meshed with the ratchet wheel 620, so that the scraping plate 400 is stably connected to the inner wall of the dust box 200. When the slider 410 moves to the end of the slide hole away from the cloth and the scraper 400 is required to be reset to readjust the angle between the scraper 400 and the cloth, the locking plate 311 is rotated so that the locking plate 311 is away from the dust box 200, thereby facilitating the sliding connection of the ratchet 620 to the slide rod 310 along the length direction of the dust box 200, and the ratchet 620 is away from the ratchet 610, thereby facilitating the rotation and reset of the scraper 400. When the scraper 400 is angularly adjusted, one side of the ratchet 620 contacts the sidewall of the dust box 200, and the other side of the ratchet 620 contacts the locking plate 311, so that the ratchet 620 is stably coupled to the slide bar 310.

The implementation principle of the cloth feeding device of the padding machine of the embodiment of the utility model is as follows: the cloth is guided into the dust box 200 through the first cloth guide roller 110, the first motor 320 drives the rotating roller 510 to rotate, and the flapping rod 520 rotates along with the rotating roller 510, so that the flapping rod 520 flapps the cloth. The suction pump 250 pumps air into the dust box 200 while the cloth is being beaten by the beating rod 520, so that lint and foreign matters shaken off from the surface of the cloth are sucked into the suction pipe 230 and along the suction pipe 230 into the collection box 240. Cloth moves to between two scrapers 400 after beating subassembly 500, clears up the cloth surface through scraper 400, further reduces the batting and the impurity on cloth surface to this dyeing effect that improves the cloth. When the thickness of the cloth entering the padding machine is different, the sliding block 410 is driven to slide in the sliding hole 300, so that the scrapers 400 rotate, the ratchet wheel 610 is driven to rotate, and the distance between the two scrapers 400 is changed, so that the padding machine is suitable for cloth with different thickness. Ratchet 610 engages ratchet teeth 620 to allow blade 400 to be stably coupled to frame 100.

And when the thickness of the cloth entering the padding machine is different, the second motor 290 rotates to drive the threaded rod 280 to rotate, so that the connecting block 270 is slidably connected in the connecting groove 260 along the width direction of the dust box 200, the rotating roller 510 is driven to move along the width direction of the dust box 200, the distance between the rotating roller 510 and the cloth is adjusted, the beating force of the beating rod 520 to the cloth is changed, the beating force of the cloth is positioned in a proper range, the abrasion of the beating rod 520 to the cloth is reduced, and the cleaning effect of the beating rod 520 to the cloth is improved.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. The utility model provides a cloth feeding device of padding machine which characterized in that: including frame (100), locate scraper blade (400) of frame (100), scraper blade (400) are equipped with two, scraper blade (400) length direction is unanimous with cloth width direction, and two scraper blade (400) interval forms the space that supplies the cloth to pass through, scraper blade (400) are rotated along its width direction one end and are connected in frame (100), the scraper blade (400) other end and cloth contact, frame (100) still are connected with rotating assembly (600), rotating assembly (600) are used for driving scraper blade (400) and rotate with this distance between changing two scraper blades (400).

2. The fabric feeding device of a pad dyeing machine according to claim 1, wherein: the novel dust collector is characterized in that the frame (100) is further connected with a beating component (500) and a dust box (200), a feed inlet (210) and a discharge outlet (220) for cloth to pass through are respectively formed in the side walls of two opposite sides of the dust box (200), the beating component (500) is connected in the dust box (200), the scraper blade (400) is connected in the dust box (200), the beating component (500) and the scraper blade (400) are sequentially distributed along the cloth conveying direction, one side of the dust box (200) is further communicated with an exhaust pipe (230), the other end of the exhaust pipe (230) is communicated with an exhaust pump (250), and the beating component (500) is used for beating cloth.

3. The fabric feeding device of a pad dyeing machine according to claim 2, wherein: the dust-proof box (200) is provided with a sliding hole (300) along one side of the width of the cloth, one end of the scraper blade (400) along the length direction is connected with a sliding block (410), the sliding block (410) is connected in the sliding hole (300) in a sliding manner along the length direction of the sliding hole (300), and when the scraper blade (400) rotates, the sliding block (410) is always positioned in the sliding hole (300).

4. A fabric feeding device of a pad dyeing machine according to claim 3, characterized in that: the rotating assembly (600) comprises a ratchet wheel (610) and a ratchet (620), the ratchet wheel (610) is rotationally connected to the dust box (200), the ratchet (620) is meshed to the ratchet wheel (610), the ratchet wheel (610) and the ratchet (620) are both connected to the side wall of the dust box (200) along the width direction of cloth, the scraper blade (400) is connected to the ratchet (610) along one end of the length direction of the scraper blade, the sliding rod (310) is further connected to one side of the dust box (200), the length direction of the sliding rod (310) is consistent with the width direction of cloth, the ratchet (620) is slidingly connected to the sliding rod (310) along the width direction of cloth, and the ratchet (620) is rotationally connected to the sliding rod (310).

5. The fabric feeding device of a pad dyeing machine according to claim 4, wherein: the sliding rod (310) is sleeved with a locking plate (311) in a threaded mode, the locking plate (311) is arranged on one side, far away from the dust box (200), of the ratchet (620), and the locking plate (311) is used for locking the position of the ratchet (620) on the sliding rod (310).

6. The fabric feeding device of a pad dyeing machine according to claim 2, wherein: the utility model provides a dust proof device, including rotating roller (510) of dust proof case (200), a plurality of rapping bars (520) of connecting in rotor (510) are including rotating to be connected to assembly (500), the length direction of rotor (510) is unanimous with cloth width direction, rapping bars (520) length direction is unanimous with cloth width direction, a plurality of rapping bars (520) are along rotor (510) circumference interval distribution, rapping bars (520) keep away from rotor (510) one side and cloth contact.

7. The fabric feeding device of a pad dyeing machine according to claim 6, wherein: one side of the beating rod (520) far away from the rotating roller (510) is connected with a flexible layer (523), and one side of the flexible layer (523) far away from the beating rod (520) is contacted with cloth.

8. The fabric feeding device of a pad dyeing machine according to claim 6, wherein: the dust-proof box (200) is provided with a connecting groove (260), the length direction of the connecting groove (260) is consistent with the thickness direction of cloth, the side wall of the dust-proof box (200) is connected with a connecting block (270), the length direction of a threaded rod (280) is consistent with the thickness direction of cloth, the threaded rod (280) is rotationally connected to the inner wall of the connecting groove (260), the connecting block (270) is slidingly connected to the connecting groove (260) along the thickness direction of cloth, the threaded rod (280) is sleeved with a connecting block (270) through threads, one end of the threaded rod (280) along the length direction is connected with a rotating piece, the rotating piece is used for driving the threaded rod (280) to rotate, and one end of a rotating roller (510) along the length direction is rotationally connected to the connecting block (270).