CN216074382U - Napping machine - Google Patents

Abstract

The utility model relates to a napping machine, which comprises a frame, napping device and first fabric guide roller and the second fabric guide roller of setting in the frame, napping device is including rotating the first driving motor who sets up the fluff cylinder in the frame and be used for driving the fluff cylinder rotatory, the fluff cylinder level just sets up along cloth width direction, first fabric guide roller and second fabric guide roller are parallel with the fluff cylinder and are located the both sides of fluff cylinder respectively, first fabric guide roller and second fabric guide roller all slide along cloth direction of delivery and frame and are connected, be provided with the first adjustment mechanism that the first fabric guide roller of drive slided along cloth direction of delivery in the frame, be provided with the second adjustment mechanism that the second fabric guide roller of drive slided along cloth direction of delivery in the frame. This application has the function of adjusting the clearance distance between first fabric guide roller and second fabric guide roller and the fluff cylinder, can play better napping effect to the cloth homoenergetic of different thickness.

Description

Napping machine

Technical Field

The application relates to the field of flannelette processing, in particular to a napping machine.

Background

The flannelette has soft body, is comfortable to wear, has good heat retention property, and is suitable for being used as underwear and pajamas in winter. In the processing process of flannelette, a napping machine is needed to nappe the cloth, so that more fluff is generated on the surface of the cloth.

Among the correlation technique, napping machine generally includes the frame, the fabric guide roll, the fluff cylinder, a driving motor, the fabric guide roll includes first fabric guide roll and second fabric guide roll, the fluff cylinder is located between first fabric guide roll and the second fabric guide roll, when wearing cloth, walk around the cloth from first fabric guide roll below, then walk around from the fluff cylinder top, at last walk around from second fabric guide roll below, then open a driving motor drive fluff cylinder and rotate, drive the cloth and carry out the napping to the cloth simultaneously and handle.

In view of the above-mentioned related art, the inventor believes that the thicknesses of different fabrics may be different, and when the fabric is thick, the fabric may be obstructed or even stuck when passing between the fabric guide roller and the raising roller, and when the fabric is thin, the fabric may not be in good contact with the raising roller, which may affect the raising effect.

SUMMERY OF THE UTILITY MODEL

In order to make the napping machine to the cloth homoenergetic of different thickness play good napping effect, this application provides a napping machine.

The application provides a napper adopts following technical scheme:

the utility model provides an napping machine, is in including frame, napping device and setting first fabric guide roller and second fabric guide roller in the frame, the napping device sets up including rotating fluffing cylinder in the frame with be used for the drive the rotatory first driving motor of fluffing cylinder, fluffing cylinder level just sets up along cloth width direction, first fabric guide roller with the second fabric guide roller with the parallel just difference in fluffing cylinder is located the both sides of fluffing cylinder, first fabric guide roller with the second fabric guide roller all along cloth direction of delivery with the frame slides and connects, be provided with the drive in the frame first adjustment mechanism that the cloth direction of delivery slided is followed to first fabric guide roller, be provided with the drive in the frame the second adjustment mechanism that the cloth direction of delivery slided is followed to the second fabric guide roller.

Through adopting above-mentioned technical scheme, when wearing cloth, utilize first adjustment mechanism to drive first fabric guide roller and slide along first fabric guide roller being close to or keeping away from the fluff cylinder direction, utilize second adjustment mechanism to drive second fabric guide roller and slide along being close to or keeping away from the fluff cylinder direction along the second fabric guide roller, thereby adjust the clearance distance between first fabric guide roller and second fabric guide roller and the fluff cylinder, make thicker cloth can not receive the hindrance when the napping and block even die, also enable thinner cloth and the good contact of fluff cylinder, make the napper can play good napping effect to the cloth homoenergetic of different thickness. Utilize first driving motor to drive the fluff cylinder rotatory, the fluff cylinder is napped the cloth at rotatory in-process and is handled and drive the cloth and carry.

Optionally, a horizontal sliding groove along the cloth conveying direction is formed in a side wall, perpendicular to the first cloth guide roller, of the frame, the sliding groove penetrates through the side wall of the frame along the length direction of the first cloth guide roller, the first adjusting mechanism comprises a first sliding block and a first driving piece used for driving the first sliding block to slide along the length direction of the sliding groove, the first sliding block is arranged in the sliding groove in a sliding mode, and the first cloth guide roller is fixedly connected with the first sliding block.

Through adopting above-mentioned technical scheme, utilize first driving piece to drive first slider and slide along spout length direction to make first fabric guide roller slide along spout length direction, simple structure, the operation is convenient.

Optionally, the second adjusting mechanism includes a second slider and a second driving element for driving the second slider to slide along the length direction of the chute, the second slider is slidably disposed in the chute, and the second cloth guide roller is fixedly connected to the second slider.

Through adopting above-mentioned technical scheme, utilize the second driving piece to drive the second slider and slide along spout length direction to make the second fabric guide roller slide along spout length direction, simple structure, the operation is convenient.

Optionally, the first driving piece includes first pole, the second driving piece includes the second pole, the one end of first pole articulates on the first slider, the one end of second pole articulates on the second slider, the first pole is kept away from the one end of first slider with the second pole is kept away from the one end of second slider articulates there is same stopper, the stopper is located directly over the fluff cylinder, first pole with the second pole is about following the process the vertical plane symmetry of fluff cylinder axis, be provided with the drive in the frame the third driving piece that the stopper slided on vertical direction.

Through adopting above-mentioned technical scheme, utilize the stopper to link together first pole and second pole for first pole and second pole can synchronous motion, the stopper that slides from top to bottom makes first slider and second slider slide along the direction that is close to each other or keeps away from each other simultaneously in the spout. Utilize the third driving piece to drive the stopper and slide on vertical direction, and the third driving piece can play limiting displacement to first pole and second pole to fixed first fabric guide roller and second fabric guide roller.

Optionally, the third driving part includes a second driving motor, a gear and a rack, the second driving motor is disposed on the rack, the gear is fixedly connected to an output shaft of the second driving motor, one end of the rack is fixed to the limiting block, the rack is vertically disposed, and the gear is engaged with the rack.

Through adopting above-mentioned technical scheme, the second driving motor drives the gear rotatory, the gear drives the rack and moves along vertical direction, thereby make the third pole drive the stopper and slide on vertical direction, thereby drive first pole and second pole and rotate, make first fabric guide roller and second fabric guide roller slide along the direction that is close to each other or keeps away from each other simultaneously in the spout, and the second driving motor plays limiting displacement to the rack through the gear when closing, make the stopper fixed, thereby first fabric guide roller and second fabric guide roller have been fixed.

Optionally, be provided with in the frame and be used for the clearance the cleaning device of the fluff cylinder, cleaning device includes cleaning roller, collecting box and is used for the drive the rotatory fourth driver of cleaning roller, the cleaning roller is provided with two, two the cleaning roller all follows the setting of fluff cylinder length direction and rotation are in the frame, two the cleaning roller all is located the below of fluff cylinder, two the cleaning roller is located respectively the both sides of fluff cylinder, be provided with the brush hair on the cleaning roller, the brush hair with the laminating of fluff cylinder, the collecting box sets up in the frame and be located the cleaning roller with the below of fluff cylinder.

Through adopting above-mentioned technical scheme, it is rotatory to utilize fourth drive piece to drive the cleaning roller, makes the brush hair on the cleaning roller clear up the batting on the fluff cylinder, and two cleaning rollers make the clearance effect better, then the batting on the brush hair is got rid of to the collection box that is located the cleaning roller below under the effect of centrifugal force, the effectual batting that has reduced on the fluff cylinder.

Optionally, the fourth driving part includes two belt pulleys, a belt and a third driving motor, the two belt pulleys are respectively and fixedly connected with the two cleaning rollers coaxially, the two belt pulleys are located at the same end portions of the two cleaning rollers, the two belt pulleys are connected through the belt, and the third driving motor is arranged on the rack and has an output shaft coaxially and fixedly connected with one of the belt pulleys.

Through adopting above-mentioned technical scheme, it is rotatory to utilize third driving motor to drive one of them belt pulley, and it is rotatory to drive another belt pulley through the belt for two cleaning rollers can synchronous revolution, simple structure.

Optionally, the machine frame includes an upper bracket and a lower bracket, a protruding block is convexly arranged at the bottom end of the upper bracket, a groove is formed in the top end of the lower bracket, a third sliding block is slidably arranged in the groove, the protruding block is inserted into the groove and tightly abuts against the third sliding block, the raising roller is rotatably connected with the third sliding block, and a fixing member for fixing the upper bracket on the lower bracket is arranged on the upper bracket.

Through adopting above-mentioned technical scheme, follow the lower carriage with the upper bracket and pull down the back, then will fluff the cylinder and remove until taking out the lower carriage along vertical direction, be convenient for dismantle the fluff cylinder, after the fluff cylinder pulls down from the lower carriage, be convenient for clear up.

Optionally, the fixing element includes a positioning block and a positioning bolt, the positioning block is disposed on a side wall of the upper bracket perpendicular to the cloth conveying direction, the positioning block extends downward from the bottom end of the upper bracket, the positioning bolt is disposed on a portion of the positioning block extending out of the bottom end of the upper bracket, and the positioning bolt is in threaded connection with the lower bracket.

Through adopting above-mentioned technical scheme, utilize positioning bolt to insert the lower carriage lateral wall to fixed upper bracket has increased the fastness of being connected between upper bracket and the lower carriage, simple structure.

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

1. the first adjusting mechanism is utilized to drive the first cloth guide roller to slide along the direction that the first cloth guide roller is close to or far away from the fluffing roller, the second adjusting mechanism is utilized to drive the second cloth guide roller to slide along the direction that the second cloth guide roller is close to or far away from the fluffing roller, so that the gap distance between the first cloth guide roller and the second cloth guide roller and the fluffing roller is adjusted, thicker cloth is prevented from being blocked or even stuck during napping, thinner cloth can be in good contact with the fluffing roller, and the napping machine can play a good napping effect on cloth with different thicknesses;

2. the first rod and the second rod are connected together by using the limiting block, so that the first rod and the second rod can move synchronously, and the limiting block is slid up and down, so that the first sliding block and the second sliding block can simultaneously slide in the sliding groove along the directions close to or far away from each other;

3. and the fourth driving part is utilized to drive the cleaning roller to rotate, so that the bristles on the cleaning roller clean the flocks on the fluffing roller.

Drawings

Fig. 1 is a schematic perspective view of a napping machine in an embodiment of the present application.

Fig. 2 is a side view of the napping machine in an embodiment of the present application.

Fig. 3 is a sectional view of the napping machine in the embodiment of the present application.

Fig. 4 is a cross-sectional view of the first rod and the first slider in an embodiment of the present application.

Fig. 5 is a sectional view of an upper bracket according to an embodiment of the present application.

Description of reference numerals: 1. a frame; 11. a first cloth guide roller; 12. a second cloth guide roller; 13. an upper bracket; 131. a bump; 14. a lower bracket; 141. a groove; 142. a third slider; 15. a chute; 16. a fixing member; 161. positioning blocks; 162. positioning the bolt; 2. a napping device; 21. a raising roller; 211. a napping needle; 22. a first drive motor; 3. a cleaning device; 31. cleaning the roller; 311. brushing; 32. a collection box; 33. a fourth drive; 331. a belt pulley; 332. a belt; 333. a drive motor; 4. a first adjustment mechanism; 41. a first slider; 42. a first lever; 43. a first hole; 44. a second hole; 45. a traveler; 46. an annular groove; 47. fixing the bolt; 5. a second adjustment mechanism; 51. a second slider; 52. a second lever; 6. a limiting block; 61. a T-shaped groove; 7. a third driving member; 71. a second drive motor; 72. a gear; 73. a rack.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses napping machine. Referring to fig. 1 and 2, the napping machine comprises a frame 1, a napping device 2, and a cleaning device 3. The frame 1 comprises an upper support 13 and a lower support 14, a convex block 131 is integrally and convexly arranged at the bottom end of the upper support 13 along the vertical direction, a groove 141 is formed in the top end of the lower support 14 along the vertical direction, a third sliding block 142 which slides along the vertical direction is installed in the groove 141, and the convex block 131 is inserted into the groove 141 from top to bottom and tightly abuts against the third sliding block 142, so that the third sliding block 142 is axially fixed along the fluffing roller 21 and is fixed along the length direction of the groove 141. The upper support 13 is provided with a fixing part 16 for fixing the upper support 13 on the lower support 14, the fixing part 16 comprises a positioning block 161 and a positioning bolt 162, the positioning block 161 is integrally arranged on the side wall of the upper support 13 perpendicular to the cloth conveying direction, the positioning block 161 extends downwards to the bottom end of the upper support 13, the positioning bolt 162 penetrates through the part of the positioning block 161 extending out of the bottom end of the upper support 13, and the rod part of the positioning bolt 162 is in threaded connection with the lower support 14.

Referring to fig. 1, napping device 2 includes fluffing cylinder 21 and is used for driving fluffing cylinder 21 pivoted first driving motor 22, and fluffing cylinder 21 level and perpendicular to cloth direction of delivery set up, and fluffing cylinder 21 rotates with third slider 142 to be connected, and fluffing cylinder 21 surface evenly distributed has napping needle 211, and first driving motor 22 is installed on third slider 142 and first driving motor 22's output shaft and the coaxial fixed connection of fluffing cylinder 21.

Referring to fig. 3, the frame 1 is slidably connected with a first cloth guide roller 11 and a second cloth guide roller 12, the first cloth guide roller 11 and the second cloth guide roller 12 are parallel to the raising roller 21 and are respectively located at two sides of the raising roller 21, and when cloth is worn, cloth is passed around from the lower side of the first cloth guide roller 11, then passed around from the upper side of the raising roller 21, and finally passed around from the lower side of the second cloth guide roller 12.

Referring to fig. 2, two horizontal sliding grooves 15 along the cloth conveying direction are formed in two vertical side walls of the frame 1 and the first cloth guide roller 11, and the two sliding grooves 15 axially penetrate through the side walls of the frame 1 and are located on two sides of the raising roller 21 along the raising roller 21. The frame 1 is provided with a first adjusting mechanism 4 for driving the first cloth guide roller 11 to slide along the cloth conveying direction and a second adjusting mechanism 5 for driving the second cloth guide roller 12 to slide along the cloth conveying direction. The first adjusting mechanism 4 includes a first slider 41 and a first driving member for driving the first slider 41 to slide along the length direction of the sliding slot 15, and the first driving member includes a first rod 42. The second adjusting mechanism 5 includes a second slider 51 and a second driving member for driving the second slider 51 to slide along the length direction of the slide slot 15, and the second driving member includes a second rod 52. The first sliding block 41 is arranged in one sliding chute 15 in a sliding manner, the second sliding block 51 is arranged in the other sliding chute 15 in a sliding manner, two ends of the first cloth guide roller 11 are fixedly connected with the first sliding block 41, and two ends of the second cloth guide roller 12 are fixedly connected with the second sliding block 51.

Referring to fig. 2 and 4, one end of the first rod 42 is attached to the first slider 41, a first hole 43 penetrating through the first rod 42 in a direction perpendicular to a length direction of the first rod 42 is formed in a surface of the first rod 42 facing away from the first slider 41, the first hole 43 is located at one end of the first rod 42 attached to the first slider 41, a second hole 44 is formed in the first slider 41, the first hole 43 and the second hole 44 are coaxial, a sliding column 45 is mounted on the first rod 42, the sliding column 45 penetrates through the first hole 43 and the second hole 44, an annular groove 46 is formed in a portion of the sliding column 45 located in the second hole 44, a fixing bolt 47 is connected to a top end of the first slider 41 in a threaded manner, and a rod portion of the fixing bolt 47 is inserted into the annular groove 46, so that the first rod 42 is rotatably connected to the first slider 41, and the first rod 42 is detachably connected to the first slider 41. The second lever 52 is coupled to the second slider 51 in the same manner as the first lever 42 is coupled to the first slider 41.

Referring to fig. 2 and 5, one end of the first rod 42, which is far away from the first slider 41, and one end of the second rod 52, which is far away from the second slider 51, are both rotatably connected with the same limiting block 6, the limiting block 6 is positioned right above the raising roller 21, and the first rod 42 and the second rod 52 are symmetrical about a vertical plane passing through the axis of the raising roller 21. Vertical T type groove 61 has all been seted up on frame 1 and two vertically lateral walls of fluff cylinder 21, and stopper 6 and frame 1 paste with the lateral wall on integrative protrusion be provided with T type piece, stopper 6 slides through T type piece and installs in T type groove 61.

Referring to fig. 1 and 2, a third driving member 7 which drives the limiting block 6 to slide along the length direction of the T-shaped groove 61 is arranged on the rack 1, the third driving member 7 includes a second driving motor 71, a gear 72 and a rack 73, the second driving motor 71 is installed on the rack 1, the gear 72 is coaxially and fixedly connected with an output shaft of the second driving motor 71, the bottom end of the rack 73 is fixed at the top end of the limiting block 6, the rack 73 is arranged along the vertical direction, and the gear 72 is meshed with the rack 73.

Referring to fig. 1 and 3, the cleaning device 3 includes two cleaning rollers 31, a collecting box 32 and a fourth driving part 33 for driving the cleaning rollers 31 to rotate, the cleaning rollers 31 are rotatably connected to the lower bracket 14 along the length direction of the fluffing roller 21, the two cleaning rollers 31 are respectively located at two sides of the fluffing roller 21 and are both located below the axis of the fluffing roller 21, bristles 311 are uniformly distributed on the cleaning rollers 31, the bristles 311 are attached to the fluffing roller 21, and the collecting box 32 is mounted on the frame 1 and is located below the cleaning rollers 31.

Referring to fig. 1, the fourth driving member 33 includes a belt pulley 331, a belt 332 and a third driving motor 333, the number of the belt pulleys 331 is two, the two belt pulleys 331 and the first driving motor 22 are both located on the same side of the rack 1, the two ends of the cleaning roller 31 are both coaxially and integrally provided with a cleaning shaft in a protruding manner, the cleaning roller 31 is rotatably connected with the lower frame 14 through the cleaning shaft and the cleaning shaft penetrates through the side wall of the rack 1, the belt pulley 331 is coaxially and fixedly connected with the cleaning shaft, the two belt pulleys 331 are connected through the belt 332, the third driving motor 333 is installed on the rack 1, and the output shaft is coaxially and fixedly connected with one of the cleaning shafts.

The implementation principle of the napping machine in the embodiment of the application is as follows: before wearing cloth, it is rotatory to start second driving motor 71 and drive gear 72, make rack 73 remove in vertical direction, thereby drive stopper 6 and slide along T type groove 61 length direction, make first pole 42 and second pole 52 rotate, thereby make first slider 41 and second slider 51 slide along the direction that is close to each other or keeps away from each other in spout 15, thereby drive first fabric guide roller 11 and second fabric guide roller 12 and slide along the direction that is close to each other or keeps away from each other, thereby adjust the clearance distance of first fabric guide roller 11 and second fabric guide roller 12 and fluff cylinder 21.

After the cloth is threaded, the second driving motor 71 is turned off, and an output shaft of the second driving motor 71 is locked when the second driving motor 71 is turned off, so that the rack 73 is fixed, and the first cloth guide roller 11 and the second cloth guide roller 12 are fixed. The first driving motor 22 and the third driving motor 333 are started, and the first driving motor 22 drives the raising roller 21 to rotate, so that the cloth is driven to be conveyed and the raising treatment is performed on the cloth. The second driving motor 71 drives one of the belt pulleys 331 to rotate, and the other belt pulley 331 is driven to rotate by the belt 332, so that the two cleaning rollers 31 rotate and clean the lint on the raising roller 21 through the bristles 311, and the lint on the bristles 311 is thrown into the collection box 32 under the action of centrifugal force.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. The utility model provides a napping machine, is in including frame (1), napping device (2) and setting first fabric guide roller (11) and second fabric guide roller (12) in frame (1), napping device (2) are including rotating the setting and are in fluffing cylinder (21) on frame (1) and being used for the drive fluffing cylinder (21) rotatory first driving motor (22), fluffing cylinder (21) level just sets up along cloth width direction, first fabric guide roller (11) with second fabric guide roller (12) with fluffing cylinder (21) parallel just are located respectively the both sides of fluffing cylinder (21), its characterized in that: first fabric guide roller (11) with second fabric guide roller (12) all along cloth direction of delivery with frame (1) slide and be connected, be provided with the drive on frame (1) first adjustment mechanism (4) that first fabric guide roller (11) slided along cloth direction of delivery, be provided with the drive on frame (1) second adjustment mechanism (5) that second fabric guide roller (12) slided along cloth direction of delivery.

2. The napping machine as defined in claim 1, characterized in that: frame (1) with set up level and along cloth direction of delivery's spout (15) on the first fabric guide roller (11) vertically lateral wall, spout (15) are followed first fabric guide roller (11) length direction runs through frame (1) lateral wall, first adjustment mechanism (4) include first slider (41) and are used for driving first slider (41) along the first driving piece that spout (15) length direction slided, first slider (41) slide and set up in spout (15), first fabric guide roller (11) with first slider (41) fixed connection.

3. The napping machine as defined in claim 2, characterized in that: the second adjusting mechanism (5) comprises a second sliding block (51) and a second driving piece for driving the second sliding block (51) to slide along the length direction of the sliding groove (15), the second sliding block (51) is arranged in the sliding groove (15) in a sliding mode, and the second cloth guide roller (12) is fixedly connected with the second sliding block (51).

4. The napping machine as defined in claim 3, characterized in that: the first driving piece comprises a first rod (42), the second driving piece comprises a second rod (52), one end of the first rod (42) is hinged to the first sliding block (41), one end of the second rod (52) is hinged to the second sliding block (51), one end of the first rod (42) far away from the first sliding block (41) and one end of the second rod (52) far away from the second sliding block (51) are hinged to the same limiting block (6), the limiting block (6) is located right above the fluffing roller (21), the first rod (42) and the second rod (52) are symmetrical about a vertical plane passing through the axis of the fluffing roller (21), and a third driving piece (7) driving the limiting block (6) to slide in the vertical direction is arranged on the rack (1).

5. The napping machine as defined in claim 4, characterized in that: the third driving piece (7) comprises a second driving motor (71), a gear (72) and a rack (73), the second driving motor (71) is arranged on the rack (1), the gear (72) is fixedly connected with an output shaft of the second driving motor (71), one end of the rack (73) is fixed on the limiting block (6), the rack (73) is vertically arranged, and the gear (72) is meshed with the rack (73).

6. The napping machine as defined in claim 1, characterized in that: a cleaning device (3) for cleaning the fluffing roller (21) is arranged on the frame (1), the cleaning device (3) comprises a cleaning roller (31), a collecting box (32) and a fourth driving piece (33) for driving the cleaning roller (31) to rotate, the two cleaning rollers (31) are arranged, the two cleaning rollers (31) are arranged along the length direction of the fluffing roller (21) and are rotatably arranged on the rack (1), the two cleaning rollers (31) are arranged below the fluffing roller (21), the two cleaning rollers (31) are respectively arranged at two sides of the fluffing roller (21), the cleaning roller (31) is provided with bristles (311), the bristles (311) are attached to the fluffing roller (21), the collecting box (32) is arranged on the frame (1) and is positioned below the cleaning roller (31) and the fluffing roller (21).

7. The napping machine as defined in claim 6, characterized in that: fourth drive spare (33) include belt pulley (331), belt (332) and third driving motor (333), belt pulley (331) are provided with two, two belt pulley (331) respectively with two the coaxial fixed connection of cleaning roller (31), two belt pulley (331) are located two same tip of cleaning roller (31), two belt pulley (331) pass through belt (332) are connected, third driving motor (333) set up in frame (1) and output shaft and one of them belt pulley (331) coaxial fixed connection.

8. The napping machine as defined in claim 1, characterized in that: the machine frame (1) comprises an upper support (13) and a lower support (14), a convex block (131) is arranged at the bottom end of the upper support (13) in a protruding mode, a groove (141) is formed in the top end of the lower support (14), a third sliding block (142) is arranged in the groove (141) in a sliding mode, the convex block (131) is inserted into the groove (141) in a splicing mode and abuts against the third sliding block (142), the fluffing roller (21) is rotatably connected with the third sliding block (142), and a fixing piece (16) for fixing the upper support (13) on the lower support (14) is arranged on the upper support (13).

9. The napping machine as defined in claim 8, characterized in that: the fixing piece (16) comprises a positioning block (161) and a positioning bolt (162), the positioning block (161) is arranged on the side wall, perpendicular to the cloth conveying direction, of the upper support (13), the positioning block (161) extends out of the bottom end of the upper support (13) downwards, the positioning bolt (162) is arranged on the portion, extending out of the bottom end of the upper support (13), of the positioning block (161), and the positioning bolt (162) is in threaded connection with the lower support (14).

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