CN111942926A

CN111942926A - Spinning edge correction device

Info

Publication number: CN111942926A
Application number: CN202010783117.7A
Authority: CN
Inventors: 张毅
Original assignee: Anhui Hanlian Colour Spin Co ltd
Current assignee: Anhui Hanlian Colour Spin Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2020-11-17

Abstract

The invention belongs to the technical field of spinning auxiliary equipment, and particularly relates to a spinning edge correction device which comprises a workbench, an adjusting device, a carding device and a winding device; the top of the workbench is provided with an adjusting device; the top of the workbench is also provided with a carding device; the top of the workbench is also provided with a winding device; pressure sensors are arranged on two sides of the top of the workbench; the adjusting device comprises a U-shaped sliding block, a feeding roller and a cylinder; the U-shaped sliding block is connected to the top of the workbench in a sliding manner; a feeding roller is arranged at the top of the U-shaped sliding block; the air cylinder is arranged at the top of the workbench, and the output end of the air cylinder is connected with the U-shaped sliding block; the winding device comprises a support frame, a winding roller and a first motor; the support frame is fixedly connected to the top of the workbench; the top of the support frame is rotatably connected with a winding roller; the end part of the winding roller is connected with a first motor; the yarn moving direction can be corrected in time, and the yarn can be combed.

Description

Spinning edge correction device

Technical Field

The invention belongs to the technical field of spinning auxiliary equipment, and particularly relates to a spinning edge correcting device.

Background

The textile machine twists many animal and plant fibers together to form threads or yarns which can be woven into cloth, the earliest spinning machine has a very simple structure and is used in the beginning of the 14 th century, and after the 18 th century, people invented a better spinning machine which makes the textile industry the first industry, and all spinning machines do two things: firstly, a large amount of short fibers are polymerized into loose cotton threads, then the cotton threads are drawn out little by little and twisted into fine cotton threads, and the cotton threads are lengthened after twisting.

The yarn of the existing spinning machine is often deviated when being fed in work, so that the yarn is different from the original movement route, and meanwhile, the yarn can be wound on a rotating shaft of a motor in the movement process, so that the normal work of the motor is influenced, and the processing effect of a product is reduced.

Disclosure of Invention

In order to make up for the defects of the prior art and solve the problems that the yarn feeding of the existing spinning machine often deviates when in work, so that the yarn is different from the original movement route, and meanwhile, the yarn is wound on a rotating shaft of a motor in the movement process, thereby influencing the normal work of the motor, the invention provides a spinning edge correction device.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention discloses a spinning edge correcting device which comprises a workbench, an adjusting device, a carding device and a winding device, wherein the workbench is provided with a guide rail; the top of the workbench is provided with an adjusting device; the top of the workbench is also provided with a carding device; the top of the workbench is also provided with a winding device; pressure sensors are arranged on two sides of the top of the workbench; the adjusting device comprises a U-shaped sliding block, a feeding roller and a cylinder; the U-shaped sliding block is connected to the top of the workbench in a sliding manner; a feeding roller is arranged at the top of the U-shaped sliding block; the air cylinder is arranged at the top of the workbench, and the output end of the air cylinder is connected with the U-shaped sliding block; the winding device comprises a support frame, a winding roller and a first motor; the support frame is fixedly connected to the top of the workbench; the top of the support frame is rotatably connected with a winding roller; the end part of the winding roller is connected with a first motor; the carding device comprises a second motor, a rotating shaft and a brush; the second motor is arranged at the top of the workbench; the output end of the second motor is connected with a rotating shaft; the end part of the rotating shaft is connected with a brush; during operation, in the process of feeding the yarn into the middle of the workbench from the feeding roller, if the movement route of the yarn deviates, the yarn touches the pressure sensor, at the moment, the switch of the air cylinder can be opened, the yarn is pushed to move on the workbench surface, and then the movement route of the yarn is adjusted, so that the movement route of the yarn returns to the initial position again.

Preferably, a sliding mechanism is arranged on the wall body of the rotating shaft; the sliding mechanism comprises a sliding chute, a rectangular sliding block, a threaded rod, an inner gear ring and an outer gear; the sliding groove is arranged on the side wall of the rotating shaft; the threaded rod is rotatably connected in the side wall of the sliding groove; the rectangular sliding block is rotatably connected to the threaded rod; a first groove is formed in the end part of the rotating shaft; the external gear is arranged in the first groove and is fixedly connected with the threaded rod; the outer gear ring is sleeved with the rotating shaft, and the bottom of the outer gear ring is fixedly connected with the workbench and is in a meshed state with the outer gear; the during operation, after the second motor drives the pivot and rotates, the external gear that is located first recess rotates along with the pivot, and external gear and internal gear ring intermeshing moreover for the external gear produces the rotation for the pivot, so the threaded rod begins to rotate, makes the rectangle slider of connection on the threaded rod slide in the spout, simple structure, convenient and practical.

Preferably, a cutting mechanism is arranged on the wall body of the rectangular sliding block; the cutting mechanism comprises an L-shaped block, a straight rod and an arc-shaped plate; the L-shaped block is fixedly connected to the top of the rectangular sliding block; the straight rod penetrates through the wall body of the rectangular sliding block and is connected with the rectangular sliding block in a sliding manner; the arc-shaped plate is fixedly connected to the bottom of the sliding groove; the during operation, when the rectangle slider slides in the spout, because the arc is unevenness's state for the straight-bar can produce the up-and-down motion, the top of straight-bar is provided with little blade moreover, and after the straight-bar rebound, can cut off the winding at the epaxial yarn of commentaries on classics, avoid the yarn to be drawn into in the second motor.

Preferably, the bottom of the straight rod is provided with a second groove; a lubricating mechanism is arranged in the second groove; the lubricating mechanism comprises a sponge ball, a drainage tube, an I-shaped plate and a limiting block; the sponge ball is arranged on the side wall of the second groove, and lubricating oil is adsorbed in the sponge ball; the I-shaped plate is connected to the second groove in a sliding manner; the surface of the sponge ball is provided with a drainage tube, and the drainage tube penetrates through the wall body of the I-shaped plate; the limiting blocks are symmetrically arranged at the bottom of the straight rod; the during operation, rectangle slider slides in the spout, because the arc is unevenness's state, when rectangle slider passes through the highest position of arc, the I-shaped plate of straight-bar bottom is upwards promoted, and then extrudees the sponge ball on the second recess lateral wall for the surface of the arc is flowed through the drainage tube to the lubricating oil of sponge ball internal adsorption, has the lubrication action to the arc, makes the motion of rectangle slider more smooth.

Preferably, the top of the rectangular sliding block is also provided with a cleaning device; the cleaning device comprises a stacked air bag, an air guide pipe and a funnel; the stacked air bag is arranged on the side wall of the sliding groove; the air guide pipe is arranged in the wall body of the rectangular sliding block in a penetrating manner, one end of the air guide pipe is communicated with the stacked air bag, and the other end of the air guide pipe is connected with the funnel; during operation, because rectangle slider removes in the spout for fold the shape gasbag and receive the compression, fold the inside gas of shape gasbag and flow to external environment through the air duct, can blow away the broken yarn on L-shaped piece lateral wall absorption, make cutting work can normally go on, simultaneously, when folding the shape gasbag and not receiving the compression, the broken yarn that drops on funnel and rectangle slider inhales fold the shape gasbag in, plays the effect of clearance broken yarn.

Preferably, the top of the sliding chute is provided with elastic cloth, and the elastic cloth is also fixedly connected to the side wall of the rectangular sliding block, so that the top of the sliding chute is in a closed state; during operation, after the yarn wound on the rotating shaft is cut off by the small blade at the top of the straight rod, the broken yarn can fall into the chute, so that the rectangular sliding block can be prevented from moving on the threaded rod, the elastic cloth just blocks the yarn from falling into the chute, the rectangular sliding block can normally move, and the whole using effect of the device is improved.

The invention has the following beneficial effects:

1. according to the spinning edge correction device, the motor drives the rotating shaft to rotate, so that the outer gear and the inner gear ring are meshed to move, the threaded rod rotates, the rectangular sliding block can move in the sliding groove, and yarns wound on the rotating shaft can be cut off under the action of the small blade at the top of the straight rod, so that the motor can work normally, and the overall using effect of the device is improved.

2. According to the spinning edge correction device, the arc-shaped plate, the straight rod and the sponge ball are matched for use, so that the straight rod can extrude the sponge ball when moving on the arc-shaped plate, lubricating oil in the sponge ball flows to the arc-shaped plate through the air duct, a good lubricating effect is achieved on the arc-shaped plate, and normal sliding of the rectangular sliding block is guaranteed.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic view of the structure of the adjusting unit of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

FIG. 5 is an enlarged view of a portion of FIG. 3 at C;

FIG. 6 is an enlarged view of a portion of FIG. 3 at D;

in the figure: the carding machine comprises a workbench 1, a pressure sensor 11, an adjusting unit 2, a U-shaped slider 21, a feeding roller 22, a cylinder 23, a carding unit 3, a second motor 31, a rotating shaft 32, a first groove 321, a brush 33, a winding unit 4, a supporting frame 41, a winding roller 42, a first motor 43, a sliding mechanism 5, a sliding chute 51, elastic cloth 511, a rectangular slider 52, a threaded rod 53, an internal gear ring 54, an external gear 55, a cutting mechanism 6, an L-shaped block 61, a straight rod 62, a second groove 622, a small knife 621, an arc-shaped plate 63, a lubricating mechanism 7, a sponge ball 71, a drainage tube 72, an I-shaped plate 73, a limiting block 74, a cleaning device 8, a laminated air bag 81, an air guide tube 82 and a funnel 83.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 6, the spinning edge-correcting device of the invention comprises a workbench 1, a regulating unit 2, a carding unit 3 and a winding unit 4; the top of the workbench 1 is provided with an adjusting unit 2; the top of the workbench 1 is also provided with a carding unit 3; the top of the workbench 1 is also provided with a winding unit 4; two sides of the top of the workbench 1 are provided with pressure sensors 11; the adjusting unit 2 comprises a U-shaped slide block 21, a feeding roller 22 and a cylinder 23; the U-shaped sliding block 21 is connected to the top of the workbench 1 in a sliding manner; a feeding roller 22 is arranged at the top of the U-shaped sliding block 21; the air cylinder 23 is arranged at the top of the workbench 1, and the output end of the air cylinder 23 is connected with the U-shaped sliding block 21; the winding unit 4 comprises a support frame 41, a winding roller 42 and a first motor 43; the support frame 41 is fixedly connected to the top of the workbench 1; the top of the supporting frame 41 is rotatably connected with a winding roller 42; the end part of the winding roller 42 is connected with a first motor 43; the carding unit 3 comprises a second motor 31, a rotating shaft 32 and a brush 33; the second motor 31 is arranged on the top of the workbench 1; the output end of the second motor 31 is connected with a rotating shaft 32; the end of the rotating shaft 32 is connected with a brush 33; during operation, when the yarn is fed into the middle of the workbench 1 from the feeding roller 22, if the moving path of the yarn deviates, the yarn touches the pressure sensor 11, at this time, the switch of the air cylinder 23 can be opened, so that the air cylinder pushes the U-shaped sliding block 21 to move on the surface of the workbench 1, and further the moving path of the yarn is adjusted, so that the moving path of the yarn returns to the initial position again, the structure is simple, when the yarn moves to the lower part of the carding unit 3, the second motor 31 drives the rotating shaft 32 to rotate, further the brush 33 can comb the yarn, the yarn is ensured to move according to the original conveying path, and the yarn is finally collected through the wind-up roller 42.

In one embodiment of the present invention, a sliding mechanism 5 is provided on a wall of the rotating shaft 32; the sliding mechanism 5 comprises a sliding chute 51, a rectangular sliding block 52, a threaded rod 53, an inner gear ring 54 and an outer gear 55; the sliding groove 51 is arranged on the side wall of the rotating shaft 32; the threaded rod 53 is rotatably connected in the side wall of the sliding groove 51; the rectangular sliding block 52 is rotatably connected to a threaded rod 53; a first groove 321 is formed at the end of the rotating shaft 32; the external gear 55 is arranged in the first groove 321 and fixedly connected with the threaded rod 53; the outer gear 55 is sleeved with the rotating shaft 32, the bottom of the outer gear 55 is fixedly connected with the workbench 1, and the outer gear 55 is meshed with the outer gear 55; during operation, after the second motor 31 drives the rotating shaft 32 to rotate, the external gear 55 located in the first groove 321 rotates along with the rotating shaft 32, and the external gear 55 and the internal gear ring 54 are meshed with each other, so that the external gear 55 rotates relative to the rotating shaft 32, and then the threaded rod 53 starts to rotate, and the rectangular slider 52 connected to the threaded rod 53 slides in the sliding groove 51.

In one embodiment of the present invention, the cutting mechanism 6 is disposed on a wall of the rectangular slider 52; the cutting mechanism 6 comprises an L-shaped block 61, a straight rod 62 and an arc-shaped plate 63; the L-shaped block 61 is fixedly connected to the top of the rectangular sliding block 52; the straight rod 62 penetrates through the wall body of the rectangular sliding block 52 and is connected with the rectangular sliding block 52 in a sliding manner; the top of the straight rod 62 is provided with a small blade 621; the arc-shaped plate 63 is fixedly connected to the bottom of the sliding groove 51; during operation, when the rectangular sliding block 52 slides in the sliding groove 51, the arc-shaped plate 63 is in an uneven state, so that the straight rod 62 can move up and down, the small blade 621 is arranged at the top of the straight rod 62, and after the straight rod 62 moves upwards, the yarn wound on the rotating shaft 32 can be cut off, and the yarn is prevented from being wound into the second motor 31.

As an embodiment of the present invention, the bottom of the straight rod 62 is provided with a second groove 622; a lubricating mechanism 7 is arranged inside the second groove 622; the lubricating mechanism 7 comprises a sponge ball 71, a drainage tube 72, an I-shaped plate 73 and a limiting block 74; the sponge ball 71 is arranged on the side wall of the second groove 622, and lubricating oil is adsorbed in the sponge ball 71; the I-shaped plate 73 is slidably connected to the second groove 622; a drainage tube 72 is arranged on the surface of the sponge ball 71, and the drainage tube 72 is arranged in the wall body of the I-shaped plate 73 in a penetrating manner; the limiting blocks 74 are symmetrically arranged at the bottom of the straight rod 62; during operation, rectangle slider 52 slides in spout 51, because arc 63 is unevenness's state, when rectangle slider 52 through the highest position of arc 63, the I-shaped plate 73 of straight-bar 62 bottom is promoted upwards, and then extrudees the sponge ball 71 on the second recess 622 lateral wall, makes the surface that the lubricating oil that adsorbs in sponge ball 71 flows to arc 63 through drainage tube 72, has the lubrication action to arc 63, makes rectangle slider 52's motion more smooth.

As an embodiment of the present invention, the top of the rectangular sliding block 52 is further provided with a cleaning device 8; the cleaning device 8 comprises a stack-shaped air bag 81, an air duct 82 and a funnel 83; the stacked air bag 81 is arranged on the side wall of the sliding chute 51; the air duct 82 penetrates through the wall body of the rectangular sliding block 52, one end of the air duct is communicated with the stacked air bag 81, and the other end of the air duct is connected with a funnel 83; during operation, because the rectangle slider 52 moves in the spout 51 for fold shape gasbag 81 receives the compression, and the inside gas of folding shape gasbag 81 flows to the external environment through air duct 82 in, can blow away the broken yarn that adsorbs on L-shaped piece 61 lateral wall, makes cutting work normally go on, simultaneously, when folding shape gasbag 81 not receive the compression, the broken yarn that drops on funnel 83 and rectangle slider 52 inhales in folding shape gasbag 81, plays the effect of clearance broken yarn.

As an embodiment of the present invention, an elastic cloth 511 is disposed on the top of the sliding chute 51, and the elastic cloth 511 is also fixed on the side wall of the rectangular sliding block 52, so that the top of the sliding chute 51 is in a closed state; when the device works, after the yarn wound on the rotating shaft 32 is cut off by the small blade 621 at the top of the straight rod 62, the broken yarn may fall into the sliding groove 51, so that the rectangular sliding block 52 is prevented from moving on the threaded rod 53, and the elastic cloth 511 just prevents the yarn from falling into the sliding groove 51, so that the rectangular sliding block 52 can normally move, and the whole using effect of the device is improved.

When the yarn carding unit works, in the process that the yarn is fed into the middle of the workbench 1 from the feeding roller 22, if the moving route of the yarn deviates, the yarn touches the pressure sensor 11, at the moment, the switch of the air cylinder 23 can be opened, so that the air cylinder pushes the U-shaped sliding block 21 to move on the surface of the workbench 1, the moving route of the yarn is further adjusted, the moving route of the yarn returns to the initial position again, the structure is simple, when the yarn moves to the lower part of the carding unit 3, the second motor 31 drives the rotating shaft 32 to rotate, so that the brush 33 can comb the yarn, the yarn is ensured to move according to the original conveying route, and the yarn is finally collected through the winding roller 42; after the second motor 31 drives the rotating shaft 32 to rotate, the external gear 55 positioned in the first groove 321 rotates along with the rotating shaft 32, and the external gear 55 and the internal gear ring 54 are meshed with each other, so that the external gear 55 rotates relative to the rotating shaft 32, and then the threaded rod 53 starts to rotate, and the rectangular slider 52 connected to the threaded rod 53 slides in the sliding groove 51, so that the structure is simple, and the device is convenient and practical; when the rectangular sliding block 52 slides in the sliding groove 51, the straight rod 62 can move up and down due to the uneven state of the arc-shaped plate 63, and the small blade 621 is arranged at the top of the straight rod 62, so that the yarn wound on the rotating shaft 32 can be cut off after the straight rod 62 moves up, and the yarn is prevented from being wound in the second motor 31; the rectangular sliding block 52 slides in the sliding groove 51, and because the arc-shaped plate 63 is in an uneven state, when the rectangular sliding block 52 passes through the highest position of the arc-shaped plate 63, the I-shaped plate 73 at the bottom of the straight rod 62 is pushed upwards to extrude the sponge ball 71 on the side wall of the second groove 622, so that lubricating oil adsorbed in the sponge ball 71 flows to the surface of the arc-shaped plate 63 through the drainage tube 72, the arc-shaped plate 63 is lubricated, and the rectangular sliding block 52 moves more smoothly; because the rectangular sliding block 52 moves in the sliding groove 51, the stacked airbag 81 is compressed, the gas in the stacked airbag 81 flows to the external environment through the gas guide pipe 82, broken yarns adsorbed on the side wall of the L-shaped block 61 can be blown away, so that the cutting work can be normally carried out, and meanwhile, when the stacked airbag 81 is not compressed, broken yarns falling on the funnel 83 and the rectangular sliding block 52 are sucked into the stacked airbag 81 to play a role in clearing the broken yarns; after the yarn wound on the rotating shaft 32 is cut off by the small blade 621 at the top of the straight rod 62, the broken yarn may fall into the sliding groove 51, so that the rectangular sliding block 52 is prevented from moving on the threaded rod 53, and the elastic cloth 511 just prevents the yarn from falling into the sliding groove 51, so that the rectangular sliding block 52 can normally move, and the whole using effect of the device is improved.

The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a spinning entangles limit device which characterized in that: comprises a workbench (1), an adjusting unit (2), a carding unit (3) and a winding unit (4); the top of the workbench (1) is provided with an adjusting unit (2); the top of the workbench (1) is also provided with a carding unit (3); the top of the workbench (1) is also provided with a winding unit (4); pressure sensors (11) are arranged on two sides of the top of the workbench (1); the adjusting unit (2) comprises a U-shaped sliding block (21), a feeding roller (22) and a cylinder (23); the U-shaped sliding block (21) is connected to the top of the workbench (1) in a sliding manner; a feeding roller (22) is arranged at the top of the U-shaped sliding block (21); the air cylinder (23) is arranged at the top of the workbench (1), and the output end of the air cylinder (23) is connected with the U-shaped sliding block (21); the winding unit (4) comprises a support frame (41), a winding roller (42) and a first motor (43); the support frame (41) is fixedly connected to the top of the workbench (1); the top of the support frame (41) is rotatably connected with a winding roller (42); the end part of the winding roller (42) is connected with a first motor (43); the carding unit (3) comprises a second motor (31), a rotating shaft (32) and a brush (33); the second motor (31) is arranged at the top of the workbench (1); the output end of the second motor (31) is connected with a rotating shaft (32); the end of the rotating shaft (32) is connected with a brush (33).

2. A spun yarn edge-correcting device as claimed in claim 1, wherein: a sliding mechanism (5) is arranged on the wall body of the rotating shaft (32); the sliding mechanism (5) comprises a sliding chute (51), a rectangular sliding block (52), a threaded rod (53), an inner gear ring (54) and an outer gear (55); the sliding groove (51) is arranged on the side wall of the rotating shaft (32); the threaded rod (53) is rotatably connected into the side wall of the sliding groove (51); the rectangular sliding block (52) is rotatably connected to the threaded rod (53); a first groove (321) is formed in the end of the rotating shaft (32); the external gear (55) is arranged in the first groove (321) and is fixedly connected with the threaded rod (53); the outer gear (55) is annularly sleeved with the rotating shaft (32), and the annular bottom of the outer gear (55) is fixedly connected with the workbench (1) and is in a meshed state with the outer gear (55).

3. A spun yarn edge-correcting device according to claim 2, wherein: a cutting mechanism (6) is arranged on the wall body of the rectangular sliding block (52); the cutting mechanism (6) comprises an L-shaped block (61), a straight rod (62) and an arc-shaped plate (63); the L-shaped block (61) is fixedly connected to the top of the rectangular sliding block (52); the straight rod (62) penetrates through the wall body of the rectangular sliding block (52) and is in sliding connection with the rectangular sliding block (52); the top of the straight rod (62) is provided with a small blade (621); the arc-shaped plate (63) is fixedly connected to the bottom of the sliding groove (51).

4. A spun yarn edge-correcting device according to claim 3, wherein: the bottom of the straight rod (62) is provided with a second groove (622); a lubricating mechanism (7) is arranged in the second groove (622); the lubricating mechanism (7) comprises a sponge ball (71), a drainage tube (72), an I-shaped plate (73) and a limiting block (74); the sponge ball (71) is arranged on the side wall of the second groove (622), and lubricating oil is adsorbed in the sponge ball (71); the I-shaped plate (73) is connected with the second groove (622) in a sliding mode; a drainage tube (72) is arranged on the surface of the sponge ball (71), and the drainage tube (72) is arranged in the wall body of the I-shaped plate (73) in a penetrating manner; the limiting blocks (74) are symmetrically arranged at the bottom of the straight rod (62).

5. A spun yarn edge-correcting device according to claim 2, wherein: the top of the rectangular sliding block (52) is also provided with a cleaning device (8); the cleaning device (8) comprises a stacked air bag (81), an air duct (82) and a funnel (83); the laminated air bag (81) is arranged on the side wall of the sliding groove (51); the air duct (82) penetrates through the wall body of the rectangular sliding block (52), one end of the air duct is communicated with the overlapped air bag (81), and the other end of the air duct is connected with a funnel (83).

6. A spun yarn edge-correcting device according to claim 2, wherein: the top of the sliding chute (51) is provided with an elastic cloth (511), and the elastic cloth (511) is also fixedly connected with the side wall of the rectangular sliding block (52), so that the top of the sliding chute (51) is in a closed state.