Crease-resistant assembly for cloth winding device of knitting machine

Abstract

The invention discloses an anti-wrinkling assembly for a cloth winding device of a knitting machine, and relates to the technical field of cloth winding of knitting machines, the anti-wrinkling assembly comprises a base and two mounting frames arranged on the base, a winding roller is arranged between the two mounting frames, and the base is provided with a rotating motor used for driving the winding roller to rotate; the rotating motor is connected with the winding roller through a speed reducer, and the anti-wrinkling device further comprises an anti-wrinkling assembly which is arranged on the base and used for preventing wrinkles of cloth wound on the winding roller. According to the anti-wrinkling assembly for the cloth rolling device of the knitting machine, through the arrangement of the anti-wrinkling assembly, under the cooperation effect of the adjusting assembly and the control assembly, the anti-wrinkling roller provides continuous and constant pressure for rolled cloth, so that the cloth can be tightly attached to the rolling roller in the rolling process, and the cloth rolling efficiency is improved. The close fitting can prevent the cloth from generating gaps due to looseness or non-uniform tension during rolling, so that the probability of generating wrinkles during rolling of the cloth is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of cloth rolling of a knitting machine, in particular to an anti-wrinkle component for a cloth rolling device of a knitting machine. Background Art

[0002] When a weaving machine is winding up a cloth, it usually uses a motor to drive the winding roller to realize automatic winding of the cloth. In the actual winding process, since the cloth has a certain elasticity or ductility, it is difficult to control the uniformity of the cloth winding tension during the winding process using the winding roller. When part of the cloth is subjected to excessive tension, it will cause them to temporarily stretch or extend, and after winding up, it will shrink due to the release of tension, thereby forming a winding gap. The gap generated during the cloth winding process will cause the cloth to wrinkle due to continuous squeezing during the multi-layer winding process, thereby reducing the quality of the cloth winding. For this reason, we propose an anti-wrinkle component for a cloth winding device of a weaving machine. Summary of the invention

[0003] The object of the present invention is to provide an anti-wrinkle component for a cloth rolling device of a knitting machine to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-wrinkle component for a cloth winding device of a knitting machine, comprising a base and two mounting frames arranged on the base, a winding roller is arranged between the two mounting frames, the base is provided with a rotating motor for driving the winding roller to rotate, the rotating motor is connected to the winding roller through a reducer, and also includes an anti-wrinkle component arranged on the base for anti-wrinkling the cloth wound on the winding roller;

[0005] The anti-wrinkle component includes a U-shaped plate slidably connected to one side of the base, the U-shaped plate is located on the side of the winding roller away from the base, the U-shaped plate is connected to the anti-wrinkle roller through a rotating shaft, the base is provided with a pressure component for applying pressure to the anti-wrinkle roller and an adjustment component for automatically adjusting the pressure applied by the anti-wrinkle roller, and the base is provided with a control component for controlling the height of the anti-wrinkle roller.

[0006] Preferably, the pressure assembly includes a pressure plate slidably connected to the side of the U-shaped plate away from the base, and the pressure plate is slidably connected to two first T-shaped rods symmetrically arranged with each other, one end of the two first T-shaped rods is connected to the U-shaped plate, and the side walls of the two first T-shaped rods are provided with springs, and the two ends of the two springs are respectively connected to the pressure plate and the U-shaped plate.

[0007] Preferably, the side walls of the two first T-shaped bars are provided with a plurality of scale lines.

[0008] Preferably, the adjustment assembly includes an adjustment plate slidably connected to the side of the pressure plate away from the base, the adjustment plate is rotatably connected to a first threaded rod on the side close to the pressure plate, the side wall of the first threaded rod is threadedly connected to a threaded tube, one end of the threaded tube is connected to the pressure plate, the adjustment plate is provided with a rotating assembly for rotating the first threaded rod, and the U-shaped plate is provided with a driving assembly for driving the rotating assembly.

[0009] Preferably, the rotating assembly includes a fixed plate fixedly connected to the side of the adjusting plate close to the pressure plate, the fixed plate is rotatably connected to a rotating rod, the rotating rod is fixedly connected to a first bevel gear at one end close to the first threaded rod, the side wall of the first threaded rod is fixedly connected to a second bevel gear, and the first bevel gear and the second bevel gear are meshed with each other.

[0010] Preferably, the driving assembly includes a guide rail fixedly connected to the side of the U-shaped plate close to the adjustment plate, the guide rail is slidably connected to the driving plate, the end of the driving plate away from the U-shaped plate is fixedly connected to a rack, the end of the rotating rod away from the first bevel gear is fixedly connected to a driving gear, the driving gear is matched with the rack, and the pressure plate is provided with an adjustment assembly for adjusting the meshing state of the rack and the driving gear.

[0011] Preferably, the adjustment assembly includes two square telescopic sleeves fixedly connected to the pressure plate near the rack side, the two square telescopic sleeves are respectively provided with a second T-shaped rod and a second threaded rod, the second T-shaped rod and the second threaded rod are respectively fixedly connected to the adjustment plates at one end near the driving plate, the opposite ends of the two adjustment plates are connected to the driving plate, and the second threaded rod is fixedly connected to a rotating ball at one end away from the adjustment plate.

[0012] Preferably, the pressure plate is provided with a guide assembly for guiding the movement of the adjustment plate, and the guide assembly includes two symmetrically arranged guide tubes fixedly connected to the pressure plate on one side close to the adjustment plate, and the two guide tubes are slidably connected with guide rods, and one end of the two guide rods is connected to the adjustment plate.

[0013] Preferably, the pressure plate and the adjustment plate are both provided with avoidance holes, and the drive plate is slidably connected to the two avoidance holes.

[0014] Preferably, the control component includes two L-shaped plates fixedly connected to the side of the base close to the winding roller, the two L-shaped plates are respectively provided with a control rod and a screw rod, the side walls of the control rod and the screw rod are respectively adapted to be connected with a control plate, one end of the two control plates is connected to the adjustment plate, one of the two L-shaped plates is provided with a control motor, and the output end of the control motor is connected to the screw rod.

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

[0016] The anti-wrinkle component for the cloth winding device of the weaving machine of the present invention, through the setting of the anti-wrinkle component, under the cooperation of the adjustment component and the control component, enables the anti-wrinkle roller to provide continuous and constant pressure on the wound cloth, so that the cloth can be tightly fitted on the winding roller during the winding process. This tight fit can prevent gaps from being generated due to relaxation or uneven tension of the cloth during winding, thereby reducing the probability of wrinkles in the cloth winding process, and further improving the quality of cloth winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the cloth rolling device of the present invention;

[0019] Figure 3 This is a schematic diagram of the positional relationship between the pressure-applying component and the anti-wrinkle component of the present invention;

[0020] Figure 4 This is a schematic diagram of the control component structure of the present invention;

[0021] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0022] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0023] Figure 7 It is a schematic diagram of the positional relationship between the guide assembly and the pressure assembly of the present invention.

[0024] In the figure: 101, base; 102, mounting frame; 103, winding roller; 104, rotating motor; 201, U-shaped plate; 202, anti-wrinkle roller; 301, pressure plate; 302, first T-shaped rod; 303, spring; 304, scale line; 401, adjustment plate; 402, first threaded rod; 403, threaded tube; 501, fixing plate; 502, rotating rod; 503, first bevel gear; 504, second bevel gear ; 601, guide rail; 602, driving plate; 603, rack; 604, driving gear; 701, guide tube; 702, guide rod; 801, square telescopic sleeve; 802, second T-bar; 803, adjustment plate; 804, second threaded rod; 805, rotating ball; 9, avoidance hole; 1001, L-shaped plate; 1002, control rod; 1003, screw rod; 1004, control board; 1005, control motor. DETAILED DESCRIPTION

[0025] 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.

[0026] Example 1

[0027] See also Figure 1-Figure 7 , an anti-wrinkle component for a cloth winding device of a knitting machine shown in the figure includes a base 101 and two mounting frames 102 arranged on the base 101, a winding roller 103 is arranged between the two mounting frames 102, the base 101 is provided with a rotating motor 104 for driving the winding roller 103 to rotate, the rotating motor 104 is connected to the winding roller 103 through a reducer, and also includes an anti-wrinkle component arranged on the base 101 for anti-wrinkling the cloth wound on the winding roller 103;

[0028] The anti-wrinkle component includes a U-shaped plate 201 slidably connected to one side of the base 101, the U-shaped plate 201 is located on the side of the winding roller 103 away from the base 101, the U-shaped plate 201 is connected to the anti-wrinkle roller 202 through a rotating shaft, the base 101 is provided with a pressure component for applying pressure to the anti-wrinkle roller 202 and an adjustment component for automatically adjusting the pressure of the anti-wrinkle roller 202, and the base 101 is provided with a control component for controlling the height of the anti-wrinkle roller 202;

[0029] It should be noted here that: through the setting of the anti-wrinkle component, under the cooperation of the adjustment component and the control component, the anti-wrinkle roller 202 provides continuous and constant pressure on the wound cloth, so that the cloth can fit tightly on the winding roller 103 during the winding process. This tight fit can prevent gaps from being generated due to relaxation or uneven tension of the cloth during winding, thereby reducing the probability of wrinkles in the cloth during winding, and thus improving the quality of cloth winding.

[0030] See also Figure 3 and Figure 4 The pressure assembly shown in the figure includes a pressure plate 301 slidably connected to the side of the U-shaped plate 201 away from the base 101, and the pressure plate 301 is slidably connected to two first T-shaped rods 302 symmetrically arranged with each other, one end of the two first T-shaped rods 302 is connected to the U-shaped plate 201, and the side walls of the two first T-shaped rods 302 are sleeved with springs 303, and the two ends of the two springs 303 are respectively connected to the pressure plate 301 and the U-shaped plate 201;

[0031] It should be noted here that: through the setting of the pressure component, the anti-wrinkle roller 202 will maintain the squeezing of the cloth on the side wall of the winding roller 103 under the elastic squeezing of the two springs 303, so as to adjust and control the tension of the cloth during the winding process.

[0032] See also Figure 7 , the side walls of the two first T-shaped bars 302 shown in the figure are provided with a plurality of scale lines 304;

[0033] It should be noted here that: the provision of multiple scale lines 304 is used to provide a reference for the squeezing force applied by the anti-wrinkle roller 202 to the cloth, thereby facilitating adjustment of the pressure on the cloth according to the different flexibility of the cloth material.

[0034] See also Figure 3 and Figure 5 The adjusting assembly shown in the figure includes an adjusting plate 401 slidably connected to the side of the pressure plate 301 away from the base 101, a first threaded rod 402 is rotatably connected to the side of the adjusting plate 401 close to the pressure plate 301, a threaded tube 403 is threadedly connected to the side wall of the first threaded rod 402, one end of the threaded tube 403 is connected to the pressure plate 301, the adjusting plate 401 is provided with a rotating assembly for rotating the first threaded rod 402, and the U-shaped plate 201 is provided with a driving assembly for driving the rotating assembly;

[0035] It should be noted here that: by adjusting the setting of the component, a constant squeezing amount of the spring 303 is maintained, so that the spring 303 applies a constant squeezing force to the anti-wrinkle roller 202, thereby providing continuous and uniform pressure to the rolled cloth through the anti-wrinkle roller 202.

[0036] See also Figure 3 and Figure 5 The rotating assembly shown in the figure includes a fixed plate 501 fixedly connected to the side of the adjusting plate 401 close to the pressure plate 301, the fixed plate 501 is rotatably connected to the rotating rod 502, the end of the rotating rod 502 close to the first threaded rod 402 is fixedly connected to the first bevel gear 503, the side wall of the first threaded rod 402 is fixedly connected to the second bevel gear 504, and the first bevel gear 503 and the second bevel gear 504 are meshed with each other;

[0037] It should be noted here that the setting of the rotating assembly is used to drive the first threaded rod 402 to rotate.

[0038] See also Figure 5 and Figure 6The driving assembly shown in the figure includes a guide rail 601 fixedly connected to the side of the U-shaped plate 201 close to the adjustment plate 401, the guide rail 601 is slidably connected to the driving plate 602, the end of the driving plate 602 away from the U-shaped plate 201 is fixedly connected to the rack 603, the end of the rotating rod 502 away from the first bevel gear 503 is fixedly connected to the driving gear 604, the driving gear 604 is matched with the rack 603, and the pressure plate 301 is provided with an adjustment assembly for adjusting the meshing state of the rack 603 and the driving gear 604;

[0039] It should be noted here that: through the setting of the drive component, the movement of the anti-wrinkle roller 202 is utilized to achieve the synchronous push of the pressure plate 301, thereby maintaining a constant squeezing amount on the spring 303, so that the spring 303 applies a constant squeezing force to the anti-wrinkle roller 202, thereby providing continuous and uniform pressure to the rolled cloth through the anti-wrinkle roller 202.

[0040] See also Figure 5 and Figure 6 The adjustment assembly shown in the figure includes two square telescopic sleeves 801 fixedly connected to the pressure plate 301 near the rack 603, the two square telescopic sleeves 801 are respectively provided with a second T-shaped rod 802 and a second threaded rod 804, the ends of the second T-shaped rod 802 and the second threaded rod 804 near the driving plate 602 are respectively fixedly connected to the adjustment plate 803, the opposite ends of the two adjustment plates 803 are connected to the driving plate 602, and the end of the second threaded rod 804 away from the adjustment plate 803 is fixedly connected to the rotating ball 805;

[0041] It should be noted here that: through the setting of the adjustment component, the rotation of the rotating ball 805 is utilized to drive the second threaded rod 804 to rotate, and then under the threaded meshing transmission action of the second threaded rod 804 and the square telescopic sleeve 801 and the guiding action of the second T-shaped rod 802, the driving plate 602 on one side of the two adjustment plates 803 is driven to move, so that the rack 603 at one end of the driving plate 602 is meshed with the driving gear 604 at one end of the rotating rod 502.

[0042] See also Figure 7 The pressure plate 301 shown in the figure is provided with a guide assembly for guiding the movement of the adjustment plate 401, and the guide assembly includes two guide tubes 701 fixedly connected to the pressure plate 301 and symmetrically arranged on one side of the adjustment plate 401, and the two guide tubes 701 are slidably connected to guide rods 702, and one end of the two guide rods 702 is connected to the adjustment plate 401;

[0043] It should be noted here that the guide assembly is provided to provide guidance and limiting functions for the movement of the adjustment plate 401 .

[0044] See also Figure 7, the pressure plate 301 and the adjustment plate 401 shown in the figure are both provided with avoidance holes 9, and the driving plate 602 is slidably connected to the two avoidance holes 9;

[0045] It should be noted here that the two avoidance holes 9 are provided to provide sufficient moving space for the movement of the driving plate 602 .

[0046] See also Figure 4 The control assembly shown in the figure includes two L-shaped plates 1001 fixedly connected to the base 101 near the winding roller 103, the two L-shaped plates 1001 are respectively provided with a control rod 1002 and a screw rod 1003, the side walls of the control rod 1002 and the screw rod 1003 are respectively adapted to be connected with a control board 1004, one end of the two control boards 1004 is connected to the adjustment board 401, one of the two L-shaped plates 1001 is provided with a control motor 1005, and the output end of the control motor 1005 is connected to the screw rod 1003;

[0047] It should be noted here that: the control component is arranged to adjust and control the height of the anti-wrinkle roller 202, so as to facilitate the anti-wrinkle roller 202 to move away from or close to the winding roller 103.

[0048] Working principle: When winding the cloth, first install the winding roller 103 between the two mounting frames 102, and connect the rotating shaft to the reducer at one end of the rotating motor 104, then connect one end of the cloth to the winding roller 103, and finally start the rotating motor 104 to drive the winding roller 103 to rotate, so that the automatic winding operation of the cloth is realized under the rotation of the winding roller 103;

[0049] In the process of winding the cloth, the control motor 1005 is started to drive the screw rod 1003 to rotate. In the process of the screw rod 1003 rotating, the screw rod 1003 and the control plate 1004 are threadedly engaged with each other and the control rod 1002 is guided to drive the adjustment plate 401 to move close to the winding roller 103. As the adjustment plate 401 continues to move, the anti-wrinkle roller 202 on the U-shaped plate 201 will be synchronously driven to move close to the winding roller 103.

[0050] When the anti-wrinkle roller 202 abuts against the cloth wound on the side wall of the winding roller 103, and the squeezing amount of the two springs 303 reaches the requirement by observing the scale lines 304 on the side walls of the two first T-shaped bars 302, the control motor 1005 can be stopped. At this time, the anti-wrinkle roller 202 will keep squeezing the cloth on the side wall of the winding roller 103 under the elastic squeezing of the two springs 303, so as to adjust and control the tension of the cloth during the winding process;

[0051] At the same time, when the anti-wrinkle roller 202 abuts against the side wall of the cloth, the second threaded rod 804 is driven to rotate by rotating the rotating ball 805, and then the driving plate 602 on one side of the two adjustment plates 803 is driven to move under the threaded meshing transmission effect of the second threaded rod 804 and the square telescopic sleeve 801 and the guiding effect of the second T-shaped rod 802, so that the rack 603 at one end of the driving plate 602 is meshed with the driving gear 604 at one end of the rotating rod 502;

[0052] As the cloth is continuously rolled up, the anti-wrinkle roller 202 is pushed, and when the anti-wrinkle roller 202 is pushed, the rack 603 at one end of the driving plate 602 is synchronously pushed to move, and then the first bevel gear 503 at one end of the rotating rod 502 is driven to rotate under the meshing transmission action of the rack 603 and the driving gear 604, and then the first threaded rod 402 is driven to rotate under the meshing transmission action of the first bevel gear 503 and the second bevel gear 504, so that the threaded meshing transmission action of the first threaded rod 402 and the threaded tube 403 and the guiding action of the guide assembly , driving the pressure plate 301 to move synchronously with the movement of the U-shaped plate 201, thereby maintaining a constant squeezing amount on the spring 303, so that the spring 303 applies a constant squeezing force to the anti-wrinkle roller 202, thereby providing a continuous and uniform pressure to the wound cloth through the anti-wrinkle roller 202, so that the cloth can be tightly fitted on the winding roller 103 during the winding process. This tight fit can prevent gaps in the cloth due to relaxation or uneven tension during winding, thereby reducing the probability of wrinkles in the cloth during winding, and thus improving the quality of cloth winding.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] 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. An anti-wrinkle assembly for a cloth rolling device of a knitting machine, comprising: A base (101) and two mounting frames (102) arranged on the base (101), a winding roller (103) being arranged between the two mounting frames (102), the base (101) being provided with a rotating motor (104) for driving the winding roller (103) to rotate, and the rotating motor (104) being connected to the winding roller (103) via a reducer; It is characterized by further comprising: An anti-wrinkle component arranged on the base (101) and used for preventing the cloth rolled up on the winding roller (103) from wrinkling; The anti-wrinkle component comprises a U-shaped plate (201) slidably connected to one side of the base (101); the U-shaped plate (201) is located on the side of the winding roller (103) away from the base (101); the U-shaped plate (201) is connected to the anti-wrinkle roller (202) via a rotating shaft; the base (101) is provided with a pressure component for applying pressure to the anti-wrinkle roller (202) and an adjustment component for automatically adjusting the pressure applied by the anti-wrinkle roller (202); the base (101) is provided with a control component for controlling the height of the anti-wrinkle roller (202).

2. The anti-wrinkle assembly for a cloth rolling device of a knitting machine according to claim 1, characterized in that: The pressure assembly comprises a pressure plate (301) slidably connected to a side of the U-shaped plate (201) away from the base (101); the pressure plate (301) is slidably connected to two first T-shaped rods (302) symmetrically arranged with each other, one end of the two first T-shaped rods (302) is connected to the U-shaped plate (201), the side walls of the two first T-shaped rods (302) are sleeved with springs (303), and the two ends of the two springs (303) are respectively connected to the pressure plate (301) and the U-shaped plate (201).

3. The anti-wrinkle assembly for a cloth rolling device of a knitting machine according to claim 2, characterized in that: The side walls of the two first T-shaped bars (302) are provided with a plurality of scale lines (304).

4. The wrinkle-proof assembly for a cloth-winding device of a knitting machine according to claim 3, characterized in that: The adjustment assembly includes an adjustment plate (401) slidably connected to the side of the pressure plate (301) away from the base (101), and the adjustment plate (401) is rotatably connected to a first threaded rod (402) on the side close to the pressure plate (301), and the side wall of the first threaded rod (402) is threadedly connected to a threaded tube (403), one end of the threaded tube (403) is connected to the pressure plate (301), and the adjustment plate (401) is provided with a rotating assembly for rotating the first threaded rod (402), and the U-shaped plate (201) is provided with a driving assembly for driving the rotating assembly.

5. The wrinkle-proof assembly for a cloth-winding device of a knitting machine according to claim 4, characterized in that: The rotating assembly comprises a fixed plate (501) fixedly connected to a side of the adjusting plate (401) close to the pressure plate (301); the fixed plate (501) is rotatably connected to a rotating rod (502); an end of the rotating rod (502) close to the first threaded rod (402) is fixedly connected to a first bevel gear (503); a side wall of the first threaded rod (402) is fixedly connected to a second bevel gear (504); the first bevel gear (503) and the second bevel gear (504) are meshed with each other.

6. The anti-wrinkle assembly for a cloth rolling device of a knitting machine according to claim 5, characterized in that: The driving assembly comprises a guide rail (601) fixedly connected to a side of the U-shaped plate (201) close to the adjustment plate (401); the guide rail (601) is slidably connected to a driving plate (602); an end of the driving plate (602) away from the U-shaped plate (201) is fixedly connected to a rack (603); an end of the rotating rod (502) away from the first bevel gear (503) is fixedly connected to a driving gear (604); the driving gear (604) is matched with the rack (603); and the pressure plate (301) is provided with an adjustment assembly for adjusting the meshing state of the rack (603) and the driving gear (604).

7. The wrinkle-proof assembly for a cloth-winding device of a knitting machine according to claim 6, characterized in that: The adjustment assembly comprises two square telescopic sleeves (801) fixedly connected to a side of the pressure plate (301) close to the rack (603), the two square telescopic sleeves (801) are respectively provided with a second T-shaped rod (802) and a second threaded rod (804), one end of the second T-shaped rod (802) and the second threaded rod (804) close to the driving plate (602) is respectively fixedly connected to the adjustment plate (803), the opposite ends of the two adjustment plates (803) are connected to the driving plate (602), and the end of the second threaded rod (804) away from the adjustment plate (803) is fixedly connected to a rotating ball (805).

8. The anti-wrinkle assembly for a cloth winding device of a knitting machine according to claim 7, characterized in that: The pressure plate (301) is provided with a guide assembly for guiding the movement of the adjustment plate (401), and the guide assembly includes two guide tubes (701) fixedly connected to the pressure plate (301) on one side close to the adjustment plate (401) and symmetrically arranged with each other, and the two guide tubes (701) are slidably connected with guide rods (702), and one end of the two guide rods (702) is connected to the adjustment plate (401).

9. The anti-wrinkle assembly for a cloth rolling device of a knitting machine according to claim 8, characterized in that: The pressure plate (301) and the adjustment plate (401) are both provided with avoidance holes (9), and the driving plate (602) is slidably connected to the two avoidance holes (9).

10. The anti-wrinkle assembly for a cloth rolling device of a knitting machine according to claim 9, characterized in that: The control assembly comprises two L-shaped plates (1001) fixedly connected to a side of a base (101) close to a winding roller (103), the two L-shaped plates (1001) being respectively provided with a control rod (1002) and a screw rod (1003), the side walls of the control rod (1002) and the screw rod (1003) being respectively adapted to be connected with a control board (1004), one end of the two control boards (1004) being connected to an adjustment board (401), and one of the two L-shaped plates (1001) being provided with a control motor (1005), the output end of the control motor (1005) being connected to the screw rod (1003).

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