Back glue separation equipment for carpet recovery

Abstract

The back glue separation equipment comprises a conveying base, a cleaning box located in the conveying base and a rectangular frame installed at the top end of the conveying base, a plurality of supporting cushion blocks are installed at the top end of the conveying base, the rectangular frame is installed at the tops of the supporting cushion blocks, and a limiting frame is installed at the top end of the rectangular frame; the limiting frame is arranged in the middle section of the rectangular frame, a pair of auxiliary conveying mechanisms is arranged at the top end of the limiting frame, a pair of stripping mechanisms is arranged at the bottom of the limiting frame, a plurality of clamping grooves are formed in the side wall of the cleaning box, and separating boxes are clamped in the clamping grooves; compared with the prior art, in the carpet conveying process, one side of carpet glue can abut against the bottom of a supporting plate, meanwhile, when a sliding rod moves along with a stretching rod, a metal plate can move, an air pressure shaft can deform under the pulling effect of an elastic shifting rod, and transmission shafts on the two sides can move by means of a pushing shaft; force can be applied in the vertical direction of carpet conveying, and redundant carpet glue on the surface is stripped.

Description

Technical Field

[0001] The invention relates to the technical field of environmentally friendly recycling, in particular to a back adhesive removal and separation device for carpet recycling. Background Art

[0002] Carpet recycling is an environmentally friendly practice that helps reduce environmental pollution caused by landfill and incineration.

[0003] In the existing processing process, because the cost of recycling old carpets is low and the performance gap with the original materials is small, it is a more economical method to produce carpet glue by disassembling old carpets to replace part of the raw materials. However, carpet glue stripping is a relatively complicated process, and the correct methods and tools need to be adopted to ensure the efficiency and safety of stripping. During the use of existing equipment, part of the carpet glue is easy to adhere to the surface of the carpet, and during the stripping process, the fluff on the surface of the carpet is easy to mix into the stripped backing glue, which requires secondary cleaning. For this reason, we propose a backing glue separation equipment for carpet recycling to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a carpet adhesive removal and separation device for carpet recycling to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a back adhesive stripping and separation device for carpet recycling, comprising a transmission seat, a cleaning box located inside the transmission seat, and a rectangular frame installed on the top of the transmission seat, a plurality of supporting pads are installed on the top of the transmission seat, the rectangular frame is installed on the top of the supporting pads, a limiting frame is installed on the top of the rectangular frame, the limiting frame is arranged in the middle section of the rectangular frame, a pair of auxiliary transmission mechanisms are arranged on the top of the limiting frame, and a pair of stripping mechanisms are arranged on the bottom of the limiting frame;

[0006] A plurality of snap-in grooves are installed on the side walls of the cleaning box, and a separation box is clamped inside the snap-in grooves. A drainage hole is opened at one end of the separation box, and the drainage hole is connected to an external device. A plurality of guide shafts are installed inside the cleaning box, and the guide shafts are staggered with the snap-in grooves. The guide shafts are symmetrically arranged inside the cleaning box. A pair of sponge plates can be clamped on the tops of the guide shafts. When it is necessary to peel off the plastic layer of the carpet, an agent for softening the carpet glue can be mixed into the cleaning box. As the external device can pull the carpet to run inside the cleaning box, as the carpet glue softens after soaking, the excess carpet glue on the surface can be quickly peeled off and separated under the cooperation of the auxiliary transmission mechanism and the stripping mechanism during the transmission process, so as to facilitate subsequent separation and recovery.

[0007] Preferably, a pair of slide grooves are provided on the limit frame, and a sliding rod is movably provided inside the slide groove, a metal plate is evenly installed at the bottom of the sliding rod, and a pneumatic shaft is provided on the outer side of the metal plate, a plurality of reset balls are provided between the pneumatic shafts, elastic levers are installed at both ends of the reset balls, and a plurality of through holes are provided on the metal plate, the pneumatic shaft is connected to the elastic lever passing through the through holes, a pair of limit plates are installed at the bottom of the limit frame, the stripping mechanism is arranged between the limit plates, the stripping mechanism can move between the limit plates, and can quickly strip the carpet glue to reduce the residual carpet glue.

[0008] Preferably, the auxiliary transmission mechanism comprises a plurality of limit shafts, the limit shafts are arranged in a uniform array at the top of the limit frame, the interior of the limit shafts is hollow, and a plurality of the limit shafts are movably provided with stretching rods;

[0009] One end of the stretching rod is fixedly connected to an elastic pull rope, and the elastic pull rope is clamped on the outer wall of one end of the sliding rod. The auxiliary transmission mechanisms at both ends are respectively connected to the sliding rods on both sides. The stretching rod is squeezed and stretched during the carpet transmission process. While the carpet is tensioned, the elastic pull rope can also be used to drive the change of air pressure inside the pneumatic shaft.

[0010] Preferably, a connecting frame is installed on the outer wall of the stretching rod, and a transmission roller is rotatably provided at one end of the connecting frame. The transmission roller has a plurality of protrusions on its surface, and the protrusions are triangular in shape. The transmission roller cooperates with the stretching rod to stretch and tension the carpet. During the transmission process, the surface of the carpet can be combed with the help of the protrusions on the surface of the transmission roller to separate excess debris and impurities.

[0011] Preferably, the stripping mechanism includes a transmission shaft, which is movably clamped between the limit plates. The transmission shaft is symmetrically arranged at the bottom of the limit frame. A positioning tube is sleeved on the surface of the transmission shaft. A plurality of push shafts are installed at the bottom of the positioning tube, and one end of the push shaft is arc-shaped and rests on the outer wall of the pneumatic shaft. The push shaft can follow the deformation of the pneumatic shaft itself to move the transmission shaft, so that the stripping mechanism can be operated to process the carpet glue.

[0012] Preferably, metal shafts are installed at both ends of the bottom of the positioning tube, and a support plate is installed at the bottom of the metal shaft, the support plate is continuously bent and is made of memory metal, a plurality of fixing frames are installed at the bottom of the support plate, a plurality of transmission rollers are rotatably provided on the bottom of the fixing frame, the transmission rollers are arranged in a uniform array on the fixing frame, a plurality of stripping shafts are installed between the transmission rollers, a plurality of inclined metal sheets are installed on the surface of the stripping shaft for stripping and recycling the carpet glue, and the carpet glue can be torn and separated from multiple angles to prevent excess carpet glue from adhering to the bottom plate textile layer.

[0013] Preferably, a compression tube is installed at the bottom of the separation box, a reset rope is provided inside the compression tube, the reset rope is installed between the separation boxes, the reset rope is elastic and a suspension block is installed on the top, a plurality of guide rings are provided on the surface of the reset rope, a plurality of vertical grooves are provided on the guide ring, a separation plate is installed on the outer wall of the guide ring, the separation plate is inclined and made of a grid material, and can limit the storage of carpet glue crushed into particles during sewage discharge to avoid its accumulation on one side of the drainage hole.

[0014] Preferably, a pair of straight grooves are provided at the top of the rectangular frame, and movable rollers are rotatably provided inside the straight grooves. The movable rollers are used for carpet transmission, thereby reducing the friction pressure on the carpet during transmission and reducing dust flying during feeding.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. During the carpet transmission process, the present invention can make one side of the carpet glue abut against the bottom of the support plate, and when the sliding rod moves following the stretching rod, the metal plate can be moved, the pneumatic shaft can be deformed under the pulling action of the elastic lever, and the transmission shafts on both sides can be moved with the help of the push shaft, and force can be applied in the vertical direction of the carpet transmission to peel off the excess carpet glue on the surface;

[0017] 2. During the transmission process, the present invention can make one side of the carpet pile surface fit on the transmission roller. As the carpet is being transmitted, the carpet can pull the stretching rod to move inside the limiting shaft, so that the carpet can be tensioned during the transmission process, ensuring that the agent is evenly soaked, and also facilitating the subsequent degumming and peeling;

[0018] 3. The present invention enables the pile surface of the carpet to be against the transmission roller. During the transmission process, the pile surface can be simply combed with the help of the convex blocks to pre-treat the dirt adhering to the inside, which is convenient for subsequent adjustment and cleaning;

[0019] 4. The present invention can swing under its own action during the activity of the support plate, and can follow the flow of the support plate with the help of the water flow inside the cleaning box to disperse the carpet glue accumulated around the driving roller and deposit it at the bottom of the cleaning box;

[0020] 5. After the carpet glue is stripped off, the present invention can guide the water flow inside the cleaning box out, and the carpet glue can be transferred to between the separation plates under the action of the water flow. After the liquid level drops, the reset rope can be reset, and multiple separation plates can be stacked to discharge the excess water inside into the compression tube along the guide ring, and can be collected uniformly to prevent small particles of carpet glue debris from being stuck in the drainage hole along the water flow, thereby reducing the possibility of blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the disassembly structure of the transmission base of the present invention;

[0023] Figure 3 For the present invention Figure 2 A partial enlarged schematic diagram in the middle;

[0024] Figure 4 For the present invention Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0025] Figure 5 This is a schematic diagram of the separation box structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the split structure of the bottom of the limit frame of the present invention;

[0027] Figure 7 For the present invention Figure 6 A partial enlarged schematic diagram of point C in the middle;

[0028] In the figure: 1. transmission seat; 2. limit frame; 3. auxiliary transmission mechanism; 4. separation box; 5. stripping mechanism; 11. cleaning box; 12. rectangular frame; 13. movable roller; 14. guide shaft; 21. sliding rod; 22. limit plate; 23. pneumatic shaft; 24. reset ball; 31. limit shaft; 32. stretching rod; 33. transmission roller; 41. compression tube; 42. reset rope; 43. separation disk; 44. guide ring; 51. transmission shaft; 52. positioning tube; 53. support plate; 54. fixed frame; 55. transmission roller; 551. stripping shaft. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 7 The present invention provides a technical solution: a back adhesive stripping and separation device for carpet recycling, comprising a transmission seat 1, a cleaning box 11 located inside the transmission seat 1, and a rectangular frame 12 installed on the top of the transmission seat 1, a plurality of supporting pads are installed on the top of the transmission seat 1, the rectangular frame 12 is installed on the top of the supporting pads, a limiting frame 2 is installed on the top of the rectangular frame 12, the limiting frame 2 is arranged in the middle section of the rectangular frame 12, a pair of auxiliary transmission mechanisms 3 are arranged on the top of the limiting frame 2, and a pair of stripping mechanisms 5 are arranged on the bottom of the limiting frame 2;

[0031] A plurality of card slots are installed on the side wall of the cleaning box 11, and a separation box 4 is carded inside the card slots. A drainage hole is opened at one end of the separation box 4, and the drainage hole is connected to an external device. A plurality of guide shafts 14 are installed inside the cleaning box 11. The guide shafts 14 are staggered with the card slots, and the guide shafts 14 are symmetrically arranged inside the cleaning box 11. A sponge board can be carded on the top of a pair of guide shafts 14. The sponge board can absorb dirt and debris suspended on the water surface to prevent dust accumulated on the surface of the carpet from floating on the water surface, which makes it inconvenient to observe the peeling of the carpet glue. When it is necessary to peel off the plastic layer of the carpet, an agent for softening the carpet glue can be mixed into the cleaning box 11. As the external device can pull the carpet to run inside the cleaning box 11, as the carpet glue softens after soaking, the excess carpet glue on the surface can be quickly peeled off and separated under the cooperation of the auxiliary transmission mechanism 3 and the stripping mechanism 5 during the transmission process, so as to facilitate subsequent separation and recovery.

[0032] like Figure 6 As shown, in order to prevent the carpet from being too tight or loose during the transmission process, a pair of slide grooves are provided on the limit frame 2, and a sliding rod 21 is movably provided inside the slide groove, a metal plate is evenly installed at the bottom of the sliding rod 21, and a pneumatic shaft 23 is provided on the outer side of the metal plate, a plurality of reset balls 24 are provided between the pneumatic shafts 23, elastic levers are installed at both ends of the reset balls 24, and a plurality of through holes are provided on the metal plate, the pneumatic shaft 23 is connected to the elastic lever passing through the through holes, a pair of limit plates 22 are installed at the bottom of the limit frame 2, and the stripping mechanism 5 is arranged between the limit plates 22, the sliding rod 21 can stretch the transmission roller 33 with the help of an elastic pull rope, thereby stretching and stretching the carpet during the transmission process, which can enable the softening agent to penetrate quickly and reduce unexpected situations such as the deviation of the carpet during the transmission process.

[0033] like Figure 2 As shown, the carpet is prone to deviation during the transmission process. The auxiliary transmission mechanism 3 includes a plurality of limit shafts 31, which are arranged in a uniform array at the top of the limit frame 2. The limit shafts 31 are hollow inside, and a stretching rod 32 is movably arranged inside the plurality of limit shafts 31.

[0034] One end of the stretching rod 32 is fixedly connected to an elastic pull rope, and the elastic pull rope is clamped on the outer wall of one end of the sliding rod 21. The auxiliary transmission mechanisms 3 at both ends are respectively connected to the sliding rods 21 on both sides. The auxiliary transmission mechanisms 3 can make use of the elastic pull rope to adjust the tensioning effect on the carpet, which can reduce accidental cleaning of carpet transmission jams and further ensure the processing efficiency of the equipment.

[0035] like Figure 3As shown, various impurities and debris are easily mixed in the pile surface of the carpet, and are easy to float on the water surface during transmission. A connecting frame is installed on the outer wall of the stretching rod 32, and a transmission roller 33 is rotatably provided at one end of the connecting frame. The transmission roller 33 has a plurality of protrusions on the surface of the transmission roller 33, and the protrusions are triangular in shape. The transmission roller 33 cooperates with the stretching rod 32 to stretch and tension the carpet. During the transmission process, the protrusions on the surface of the transmission roller 33 and the pile surface of the carpet can be staggered, which can play a combing role in the transmission process and quickly peel off the debris mixed on the surface of the carpet.

[0036] like Figure 6 As shown, in order to reduce the residual carpet glue during the transmission process, the stripping mechanism 5 includes a transmission shaft 51, which is movably clamped between the limit plates 22, and the transmission shaft 51 is symmetrically arranged at the bottom of the limit frame 2. A positioning tube 52 is sleeved on the surface of the transmission shaft 51, and a plurality of push shafts are installed at the bottom of the positioning tube 52, and one end of the push shaft is arc-shaped and rests on the outer wall of the pneumatic shaft 23. The pneumatic shaft 23 can be deformed under the pulling action of the elastic lever, and the transmission shafts 51 on both sides can be moved with the help of the push shaft, and force can be applied from the vertical direction of the carpet transmission to strip off the excess carpet glue on the surface.

[0037] like Figure 7 As shown, in order to prevent a small amount of carpet glue from remaining during the stripping process, metal shafts are installed at both ends of the bottom of the positioning tube 52, and a support plate 53 is installed at the bottom of the metal shaft. The support plate 53 is continuously bent and made of memory metal. A plurality of fixing frames 54 are installed at the bottom of the support plate 53. A plurality of transmission rollers 55 are rotatably provided on the bottom of the fixing frame 54. The transmission rollers 55 are arranged on the fixing frame 54 in a uniform array. A plurality of stripping shafts 551 are installed between the transmission rollers 55. A plurality of inclined metal sheets are installed on the surface of the stripping shafts 551 for stripping and recycling the carpet glue. During the activity of the support plate 53, it can swing under its own action, and can follow the flow of the support plate 53 with the help of the water flow inside the cleaning box 11, so as to disperse the carpet glue accumulated around the transmission rollers 55 and deposit it at the bottom of the cleaning box 11, thereby ensuring the stripping efficiency of the carpet glue during the transmission process.

[0038] like Figure 5As shown, in order to prevent the carpet glue from accumulating and clogging after stripping, a compression tube 41 is installed at the bottom of the separation box 4, and a reset rope 42 is arranged inside the compression tube 41. The reset rope 42 is installed between the separation boxes 4. The reset rope 42 is elastic and a suspension block is installed on the top. A plurality of guide rings 44 are clamped on the surface of the reset rope 42, and a plurality of vertical grooves are opened on the guide ring 44. A separation disk 43 is installed on the outer wall of the guide ring 44. The separation disk 43 is inclined and made of a grid material. After the carpet glue is stripped, the water flow inside the cleaning box 11 can be discharged, and the carpet glue can be transmitted between the separation disks 43 under the action of the water flow. After the liquid level drops, the reset rope 42 can be reset, and the plurality of separation disks 43 can be stacked, and the excess water inside can be discharged into the compression tube 41 along the guide ring 44, and can be collected uniformly to prevent small particles and debris from being stuck in the drainage hole along the water flow, reduce blockage, ensure smooth drainage of sewage, and extend the maintenance cycle of the equipment.

[0039] In order to ensure the stability of the equipment transmission, a pair of straight grooves are opened at the top of the rectangular frame 12, and movable rollers 13 are rotatably arranged inside the straight grooves. The movable rollers 13 are used for carpet transmission.

[0040] Working principle: first, when it is necessary to peel off the plastic layer of the carpet, a reagent that softens the carpet glue can be mixed into the cleaning box 11, and the carpet can be pulled by the external equipment to run inside the cleaning box 11. As the carpet glue softens after soaking, the excess carpet glue on the surface can be quickly peeled off and separated under the cooperation of the auxiliary transmission mechanism 3 and the stripping mechanism 5 during the transmission process, so as to facilitate subsequent separation and recovery. In addition, during the transmission process, one side of the carpet pile surface can be attached to the transmission roller 33. During the transmission process, the carpet can pull the stretching rod 32 to move inside the limiting shaft 31, so as to tension the carpet during the transmission process, ensure that the reagent is soaked evenly, and also facilitate the subsequent degumming and stripping. During the transmission process, the carpet pile surface can be against the transmission roller 33. During the transmission process, the pile surface can be simply combed with the help of the protrusions, and the dirt adhering to the inside can be pre-processed, so as to facilitate subsequent adjustment and cleaning.

[0041] Then, during the carpet transmission process, one side of the carpet glue can be pressed against the bottom of the support plate 53. At the same time, when the sliding rod 21 moves following the stretching rod 32, the metal plate can be moved, and the pneumatic shaft 23 can be deformed under the pulling action of the elastic lever. The transmission shafts 51 on both sides can be moved with the help of the push shaft, and force can be applied in the vertical direction of the carpet transmission to peel off the excess carpet glue on the surface. In addition, as the support plate 53 moves, it can swing under its own action, and can follow the flow of the support plate 53 with the help of the water flow inside the cleaning box 11, so as to disperse the carpet glue accumulated around the transmission roller 55 and deposit it at the bottom of the cleaning box 11.

[0042] Finally, after the carpet glue is stripped off, the water flow inside the cleaning box 11 can be discharged, and the carpet glue can be transmitted to the separation plates 43 by the water flow. After the liquid level drops, the reset rope 42 can be reset, and the multiple separation plates 43 can be stacked, and the excess water inside can be discharged into the compression tube 41 along the guide ring 44, and can be collected uniformly to prevent small particles and debris from being stuck in the drainage hole along the water flow, thereby reducing blockage.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A carpet adhesive stripping and separation device for recycling, comprising a transmission seat (1), a cleaning box (11) located inside the transmission seat (1), and a rectangular frame (12) installed on the top of the transmission seat (1), characterized in that: A plurality of supporting pads are installed at the top of the transmission seat (1), the rectangular frame (12) is installed on the top of the supporting pads, a limiting frame (2) is installed at the top of the rectangular frame (12), the limiting frame (2) is arranged in the middle section of the rectangular frame (12), a pair of auxiliary transmission mechanisms (3) are provided at the top of the limiting frame (2), and a pair of peeling mechanisms (5) are provided at the bottom of the limiting frame (2); A plurality of snap-in grooves are installed on the side wall of the cleaning box (11), and a separation box (4) is clamped inside the snap-in groove. A drainage hole is opened at one end of the separation box (4), and the drainage hole is connected to an external device. A plurality of guide shafts (14) are installed inside the cleaning box (11), and the guide shafts (14) are staggered with the snap-in grooves. The guide shafts (14) are symmetrically arranged inside the cleaning box (11), and a sponge board can be clamped on the top of a pair of the guide shafts (14).

2. The carpet adhesive removal and separation equipment according to claim 1, characterized in that: The limiting frame (2) is provided with a pair of slide grooves, and a sliding rod (21) is movably clamped inside the slide grooves. A metal plate is evenly installed at the bottom of the sliding rod (21), and a pneumatic shaft (23) is clamped on the outer side of the metal plate. A plurality of reset balls (24) are arranged between the pneumatic shafts (23). Elastic levers are installed at both ends of the reset balls (24), and a plurality of through holes are opened on the metal plate. The pneumatic shaft (23) is connected to the elastic levers passing through the through holes. A pair of limit plates (22) are installed at the bottom of the limiting frame (2), and the stripping mechanism (5) is arranged between the limit plates (22).

3. The carpet adhesive removal and separation equipment for recycling according to claim 1, characterized in that: The auxiliary transmission mechanism (3) comprises a plurality of limiting shafts (31), the limiting shafts (31) are arranged in a uniform array at the top of the limiting frame (2), the interior of the limiting shafts (31) is hollow, and stretching rods (32) are movably arranged inside the plurality of limiting shafts (31); One end of the stretching rod (32) is fixedly connected to an elastic pull rope, and the elastic pull rope is clamped on the outer wall of one end of the sliding rod (21), and the auxiliary transmission mechanisms (3) at both ends are respectively connected to the sliding rods (21) on both sides.

4. The carpet adhesive removal and separation equipment according to claim 3, characterized in that: A connecting frame is installed on the outer wall of the stretching rod (32), and a transmission roller (33) is rotatably provided at one end of the connecting frame. The transmission roller (33) has a plurality of protrusions on its surface, and the protrusions are triangular in shape. The transmission roller (33) cooperates with the stretching rod (32) to stretch and tension the carpet.

5. The adhesive stripping and separation equipment for carpet recycling according to claim 1, characterized in that: The stripping mechanism (5) comprises a transmission shaft (51), the transmission shaft (51) is movably clamped between the limiting plates (22), the transmission shaft (51) is symmetrically arranged at the bottom of the limiting frame (2), a positioning tube (52) is sleeved on the surface of the transmission shaft (51), a plurality of push shafts are installed at the bottom of the positioning tube (52), and one end of the push shaft is arc-shaped and abuts against the outer wall of the pneumatic shaft (23).

6. The carpet adhesive removal and separation equipment for recycling according to claim 5, characterized in that: Metal shafts are installed at both ends of the bottom of the positioning tube (52), and a support plate (53) is installed at the bottom of the metal shaft. The support plate (53) is in a continuously bent shape and is made of a memory metal material. A plurality of fixing frames (54) are installed at the bottom of the support plate (53). A plurality of transmission rollers (55) are rotatably arranged on the bottom of the fixing frame (54). The transmission rollers (55) are arranged on the fixing frame (54) in a uniform array. A plurality of stripping shafts (551) are installed between the transmission rollers (55). A plurality of inclined metal sheets are installed on the surface of the stripping shaft (551) for stripping and recycling the carpet glue.

7. The carpet adhesive removal and separation equipment for recycling according to claim 1, characterized in that: A compression tube (41) is installed at the bottom of the separation box (4), a reset rope (42) is arranged inside the compression tube (41), the reset rope (42) is installed between the separation boxes (4), the reset rope (42) is elastic and a suspension block is installed on the top, a plurality of guide rings (44) are clamped on the surface of the reset rope (42), a plurality of vertical grooves are opened on the guide ring (44), a separation plate (43) is installed on the outer wall of the guide ring (44), and the separation plate (43) is inclined and made of a mesh material.

8. The carpet adhesive removal and separation equipment for recycling according to claim 1, characterized in that: A pair of straight grooves are provided at the top of the rectangular frame (12), and movable rollers (13) are rotatably provided inside the straight grooves. The movable rollers (13) are used for carpet transmission.

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