Cloth pressing device for garment processing

Abstract

The cloth pressing device for garment processing comprises a processing table and a fixing support fixedly connected to the tail of the processing table, linear sliding tables are connected to the two sides of the surface of the processing table, a traction bottom plate is arranged on the two linear sliding tables, a traction clamping assembly is arranged on the traction bottom plate, and carrier roller supports are fixedly connected to the two sides of the tail end of the processing table; a rubber roller is rotationally connected between the two carrier roller supports, a lifting support is slidably connected to the fixed support, a multi-stage telescopic air cylinder is installed on the fixed support, a cloth flattening assembly is arranged at the vertical arm end of the lifting support, and a rolling assembly is arranged at the transverse arm end of the lifting support. The cloth flattening device has the beneficial effects that after the cloth flattening assembly and the rolling assembly ascend, the operation space is increased, the cloth can be conveniently placed, time and labor are saved, the working efficiency is improved, the cloth is flattened when the cloth is in a vertical state, the cloth can be completely unfolded and flattened, the cloth is prevented from being stacked and wrinkled, and the pressing quality is improved.

Description

Technical Field

[0001] This invention relates to the field of fabric processing technology, and more specifically, to a fabric pressing device for garment processing. Background Technology

[0002] When processing clothing, the fabric is first treated using a fabric pressing device, which makes the fabric look more beautiful and crisp.

[0003] During the pressing process of the fabric, workers need to smooth the fabric with their hands to prevent wrinkles from forming during pressing. However, this method poses a threat to the safety of the workers, and the repeated operation not only makes the workers very tired but also reduces work efficiency.

[0004] Existing related technologies, such as patents with application number CN201710657966.6 entitled "A Fabric Pressing Device for Garment Processing" and application number CN202121281572.3 entitled "A Pressing Device for Fabric Cutting Smoothness in Yarn-dyed Fabric Production," although they do not require manual smoothing of the fabric, still require manual placement of the fabric between the base plate and the smoothing plate. The fabric under the smoothing plate needs to be flat, and the small gap between the smoothing plate and the base plate results in limited operating space, making it inconvenient to operate with the fabric and leading to low work efficiency. Smoothing with the smoothing plate is also difficult to pass through areas where the fabric is stacked, and wrinkles cannot be completely eliminated, affecting the pressing quality. Summary of the Invention

[0005] To address the above deficiencies, the present invention provides a fabric pressing device for garment processing, thereby solving the aforementioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A fabric pressing device for garment processing includes a processing table and a fixed bracket fixedly connected to the rear of the processing table. Linear slides are connected to both sides of the processing table surface. Traction base plates are provided on the two linear slides and are fixedly connected to the sliders of the linear slides. Traction clamping components are provided on the traction base plates. Roller brackets are fixedly connected to both sides of the end of the processing table. A rubber roller is rotatably connected between the two roller brackets. A lifting bracket is slidably connected to the fixed bracket and slides along the fixed bracket. A multi-stage telescopic cylinder is installed on the fixed bracket, and the telescopic ends of the multi-stage telescopic cylinders are fixedly connected to the lifting bracket. A fabric leveling component is provided at the vertical arm end of the lifting bracket, located on one side of the rubber roller. A rolling component is provided at the horizontal arm end of the lifting bracket, located on the rear surface of the processing table.

[0007] As a preferred embodiment of the present invention, the traction clamping assembly includes a fixed clamping plate, which is fixedly connected to one side of the traction base plate surface. Two guide rods are fixedly connected to the side wall of the fixed clamping plate, and guide sleeves are slidably connected to the guide rods. A movable clamping plate is fixedly connected between the two guide sleeves, and the movable clamping plate slides along the guide rods through the guide sleeves. A clamping cylinder is fixedly connected to one side of the traction base plate surface, and the output end of the clamping cylinder is fixedly connected to the side wall of the movable clamping plate.

[0008] The movable clamping plate is guided by a guide sleeve and a guide rod to prevent it from shifting position.

[0009] As a preferred embodiment of the present invention, both the movable clamping plate and the fixed clamping plate are vertically arranged, and rubber anti-slip pads are fixedly connected to the side walls of the movable clamping plate and the fixed clamping plate. The rubber anti-slip pads on the movable clamping plate and the fixed clamping plate are positioned opposite each other and are the same size.

[0010] The rubber anti-slip pad increases friction, improves the clamping and fixing effect, and is less prone to generating static electricity.

[0011] As a preferred embodiment of the present invention, the fabric smoothing assembly includes a soft brush roller, multiple sets of bearing seats are fixedly installed at the vertical arm end of the lifting bracket, the soft brush roller is rotatably connected to the bearing seats, the top end of the soft brush roller passes through the upper bearing seat, multiple stepper motors are fixedly installed at the top of the lifting bracket, the output end of the stepper motor is fixedly connected to a drive shaft, the drive shaft is connected to the soft brush roller through a connector, and the soft brush roller is located below one side of the rubber roller.

[0012] As a preferred embodiment of the present invention, the soft brush roller and the stepper motor are provided in two sets, with 2-4 soft brush rollers and stepper motors in each set, and the rotation directions of the soft brush rollers in each set are opposite.

[0013] As a preferred technical solution of the present invention, the rolling assembly includes a heating roller, and fixing members are fixedly connected to both sides of the bottom surface of the horizontal arm end of the lifting bracket. A central shaft is fixedly connected between the two fixing members. The heating roller is mounted on the central shaft through a bearing. The interior of the heating roller is hollow. An electric heating tube is fixedly connected to the central shaft. Multiple electric heating tubes are provided and evenly distributed along the axis on the central shaft. A thermocouple temperature probe is connected to the central shaft.

[0014] As a preferred embodiment of the present invention, the outer wall of the heating drum is provided with a heat-conducting layer, and the heat-conducting layer is covered with a ceramic coating.

[0015] The heat-conducting layer allows for rapid heat transfer, while the ceramic coating reduces fabric adhesion, improves surface smoothness, prevents scorching and bleeds, and enhances the bonding effect.

[0016] As a preferred embodiment of the present invention, the fixed bracket is provided with guide grooves on both sides, and guide sliders are fixedly connected to both sides of the lifting bracket. The guide sliders are located in the guide grooves and slide along the guide grooves. One end of the central shaft extends out of the guide groove through the fixing member, and a wiring hole is provided at the end of the central shaft extending out of the guide groove.

[0017] The connection wires of the electric heating element and the thermocouple temperature probe are extended through the wiring hole, and the lifting bracket is guided by the guide slider and guide groove to prevent the lifting bracket from shifting position.

[0018] The beneficial effects of this invention are: 1. The lifting bracket is driven by a multi-stage telescopic cylinder to lift and lower. The lifting bracket drives the fabric sweeping component and the rolling component to lift and lower. After the fabric sweeping component and the rolling component rise, the operating space is increased, which makes it easier to place the fabric, saves time and effort, and improves work efficiency. 2. One end of the fabric is located on the fixed clamping plate and the end of the fabric hangs down. The movable clamping plate is moved by the clamping cylinder. The movable clamping plate and the fixed clamping plate clamp and fix the end of the fabric. The clamping force is large and the clamping effect is good, which prevents the fabric from falling off during the clamping process. 3. The soft brush rollers are rotated by a stepper motor driven by a transmission shaft. Each set of soft brush rollers rotates in opposite directions. The soft brush rollers contact the surface of the fabric and sweep and push the fabric to both sides. When the fabric is in a vertical state, it is swept flat, which can completely unfold and smooth the fabric, avoid fabric stacking, avoid fabric wrinkles, and improve the pressing quality. 4. The heat generated by the electric heating element is transferred to the wall of the heating roller. The temperature is detected by a thermocouple temperature probe. The fabric is ironed and pressed by the heating roller. After smoothing the fabric, it is pressed directly, which improves work efficiency and pressing effect. Attached Figure Description

[0019] Figure 1 This is a diagram showing the rising state of the fabric leveling component and the rolling component; Figure 2 This is a diagram showing the descent state of the fabric leveling assembly and the rolling assembly; Figure 3 This is a top view of the machining table; Figure 4 This is an enlarged top view of the traction clamping assembly; Figure 5 This is a front view of the roll-formed component; Figure 6 This is a front view of the fabric smoothing component; Figure 7 This is an enlarged sectional view of the roll forming assembly; Figure 8 This is a bottom view of the fabric smoothing assembly and the rolling assembly; In the diagram, 1. Processing table; 2. Fixed bracket; 3. Linear slide; 4. Traction base plate; 5. Roller bracket; 6. Rubber roller; 7. Lifting bracket; 8. Multi-stage telescopic cylinder; 9. Fixed clamping plate; 10. Guide rod; 11. Guide sleeve; 12. Movable clamping plate; 13. Clamping cylinder; 14. Brush roller; 15. Bearing seat; 16. Stepper motor; 17. Drive shaft; 18. Connecting part; 19. Heating roller; 20. Fixing part; 21. Central shaft; 22. Bearing; 23. Electric heating tube; 24. Thermocouple temperature probe; 25. Heat-conducting layer; 26. Ceramic coating; 27. Guide groove; 28. Guide slider; 29. ​​Wiring hole; 30. Rubber anti-slip pad. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] This application provides a fabric pressing device for garment processing. Please refer to [link / reference]. Figures 1-8 The system includes a processing table 1 and a fixed bracket 2 fixedly connected to the tail of the processing table 1. Linear slides 3 are connected to both sides of the surface of the processing table 1. Traction base plates 4 are provided on the two linear slides 3. The traction base plates 4 are fixedly connected to the sliders of the linear slides 3. Traction clamping components are provided on the traction base plates 4. Roller brackets 5 are fixedly connected to both sides of the end of the processing table 1. Rubber rollers 6 are rotatably connected between the two roller brackets 5. Lifting brackets 7 are slidably connected to the fixed bracket 2. Lifting brackets 7 slide along the fixed bracket 2. Multi-stage telescopic cylinders 8 are installed on the fixed bracket 2. The telescopic end of the multi-stage telescopic cylinders 8 is fixedly connected to the lifting bracket 7. A cloth sweeping component is provided at the vertical arm end of the lifting bracket 7. The cloth sweeping component is located on one side of the rubber roller 6. A rolling component is provided at the horizontal arm end of the lifting bracket 7. The rolling component is located on the tail surface of the processing table 1.

[0022] In practical applications, when pressing the fabric, firstly, the multi-stage telescopic cylinder 8 is activated. The telescopic end of the multi-stage telescopic cylinder 8 retracts, causing the lifting bracket 7 to rise. The lifting bracket 7 then causes the fabric leveling component and the rolling component to rise, moving the rolling component away from the surface of the processing table 1 and the fabric leveling component away from the rubber roller 6. The fabric is then unfolded and placed vertically on one side of the rubber roller 6, with the fabric in contact with the surface of the rubber roller 6. Next, one end of the fabric is flattened and placed on the traction base plate 4. The traction clamping component clamps and fixes one end of the fabric. The telescopic end of the multi-stage telescopic cylinder 8 extends, causing the lifting bracket 7 to descend. The lifting bracket 7 then causes the fabric leveling component and the rolling component to descend, pressing the rolling component onto the surface of the fabric. The fabric leveling component is located on one side of the rubber roller 6 and is in contact with the fabric surface. After the fabric leveling component and the rolling component rise, the operating space is increased, which facilitates the placement of the fabric and improves work efficiency. The linear slide table 3 starts to work. The slider of the linear slide table 3 drives the traction base plate 4 and the traction clamping component to move. The traction clamping component pulls the fabric, and at the same time, the fabric leveling component levels the fabric. The fabric is leveled when it is in a vertical state, which can completely unfold and smooth the fabric, avoid the fabric from piling up, avoid the fabric from wrinkling, and improve the pressing quality. The rolling component irons and presses the fabric. After smoothing the fabric, it is pressed directly, which improves work efficiency and pressing effect.

[0023] Refer to the instruction manual appendix Figure 2 Instruction manual attached Figure 3 Included with instruction manual Figure 4 The traction clamping assembly includes a fixed clamping plate 9, which is fixedly connected to one side of the surface of the traction base plate 4. Two guide rods 10 are fixedly connected to the side wall of the fixed clamping plate 9. Guide sleeves 11 are slidably connected to the guide rods 10. A movable clamping plate 12 is fixedly connected between the two guide sleeves 11. The movable clamping plate 12 slides along the guide rods 10 through the guide sleeves 11. A clamping cylinder 13 is fixedly connected to one side of the surface of the traction base plate 4. The output end of the clamping cylinder 13 is fixedly connected to the side wall of the movable clamping plate 12.

[0024] In practical applications, one end of the fabric is laid flat on the traction base plate 4, the fabric is located on the fixed clamping plate 9, and the end of the fabric hangs down. The clamping cylinder 13 starts to work, and the output end of the clamping cylinder 13 drives the movable clamping plate 12 to move. The movable clamping plate 12 drives the guide sleeve 11 to slide along the guide rod 10. The guide sleeve 11 and the guide rod 10 guide the movable clamping plate 12 to avoid the position of the movable clamping plate 12 shifting. The movable clamping plate 12 moves towards the fixed clamping plate 9. The end of the fabric is clamped and fixed by the movable clamping plate 12 and the fixed clamping plate 9. The clamping force is large and the clamping effect is good, which prevents the fabric from falling off during the clamping process.

[0025] Refer to the instruction manual appendix Figure 4Both the movable clamp 12 and the fixed clamp 9 are vertically arranged. Rubber anti-slip pads 30 are fixedly connected to the side walls of the movable clamp 12 and the fixed clamp 9. The rubber anti-slip pads 30 on the movable clamp 12 and the fixed clamp 9 are opposite in position and the same in size.

[0026] In practical applications, the rubber anti-slip pad 30 increases friction, improves the clamping and fixing effect, and the rubber anti-slip pad 30 is not prone to generating static electricity.

[0027] Refer to the instruction manual appendix Figure 2 Instruction manual attached Figure 6 Included with instruction manual Figure 8 The fabric smoothing assembly includes a soft brush roller 14. Multiple sets of bearing seats 15 are fixedly installed on the vertical arm end of the lifting bracket 7. The soft brush roller 14 is rotatably connected to the bearing seats 15. The top end of the soft brush roller 14 passes through the upper bearing seat 15. Multiple stepper motors 16 are fixedly installed on the top of the lifting bracket 7. The output end of the stepper motor 16 is fixedly connected to a drive shaft 17. The drive shaft 17 is connected to the soft brush roller 14 through a connector 18. The soft brush roller 14 is located below one side of the rubber roller 6. There are two sets of soft brush rollers 14 and stepper motors 16. Each set of soft brush rollers 14 and stepper motors 16 has 2-4 motors. The rotation direction of each set of soft brush rollers 14 is opposite.

[0028] In practical applications, stepper motor 16 starts working, and the output end of stepper motor 16 drives transmission shaft 17 to rotate. Transmission shaft 17 drives soft brush roller 14 to rotate through connector 18. Each set of soft brush rollers 14 rotates in opposite directions. The soft brush roller 14 contacts the surface of the fabric and sweeps and pushes the fabric to both sides. When the fabric is in a vertical state, it is swept flat, which can completely unfold and smooth the fabric, avoid fabric stacking, avoid fabric wrinkles, and improve the pressing quality.

[0029] Refer to the instruction manual appendix Figure 2 Instruction manual attached Figure 5 Included with instruction manual Figure 7 The rolling assembly includes a heating roller 19. Fixing members 20 are fixedly connected to both sides of the bottom surface of the horizontal arm end of the lifting bracket 7. A central shaft 21 is fixedly connected between the two fixing members 20. The heating roller 19 is mounted on the central shaft 21 through a bearing 22. The heating roller 19 is hollow inside. An electric heating tube 23 is fixedly connected to the central shaft 21. Multiple electric heating tubes 23 are provided and evenly distributed along the axis on the central shaft 21. A thermocouple temperature probe 24 is connected to the central shaft 21.

[0030] In practical applications, the electric heating tube 23 starts working, and the heat generated by the electric heating tube 23 is transferred to the wall of the heating roller 19. The temperature is detected by the thermocouple temperature probe 24. The fabric moves from below the heating roller 19, and the heating roller 19 rotates through the bearing 22. The heating roller 19 irons and presses the fabric, directly pressing it after smoothing it out, which improves work efficiency and pressing effect.

[0031] Refer to the instruction manual appendix Figure 7 The outer wall of the heating drum 19 is provided with a heat-conducting layer 25, and the heat-conducting layer 25 is covered with a ceramic coating 26.

[0032] In practical applications, the heat-conducting layer 25 can quickly conduct heat, and the ceramic coating 26 reduces the adhesion of the fabric, improves the surface smoothness, prevents scorching and printing, and improves the pressing effect.

[0033] Refer to the instruction manual appendix Figure 5 Included with instruction manual Figure 7 The fixed bracket 2 has vertical guide grooves 27 on both sides, and the lifting bracket 7 has guide sliders 28 fixedly connected to both sides. The guide sliders 28 are located in the guide grooves 27 and slide along the guide grooves 27. One end of the central shaft 21 passes through the fixing member 20 and extends out of the guide groove 27. The end of the central shaft 21 extending out of the guide groove 27 is provided with a wiring hole 29.

[0034] In practical applications, the connecting wires of the electric heating tube 23 and the thermocouple temperature probe 24 extend through the wiring hole 29. When the lifting bracket 7 is raised or lowered, it drives the guide slider 28 to slide along the guide groove 27. The guide slider 28 and the guide groove 27 guide the lifting bracket 7 to avoid the position of the lifting bracket 7 from shifting.

[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

[0037] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

Claims

1. A fabric pressing device for garment processing, comprising a processing table (1) and a fixed bracket (2) fixedly connected to the tail of the processing table (1), characterized in that, The processing table (1) has linear slides (3) connected to both sides of its surface. Two linear slides (3) are provided with traction base plates (4). The traction base plates (4) are fixedly connected to the sliders of the linear slides (3). The traction base plates (4) are provided with traction clamping components. Two roller brackets (5) are fixedly connected to both ends of the processing table (1). A rubber roller (6) is rotatably connected between the two roller brackets (5). A lifting bracket (7) is slidably connected to the fixed bracket (2). The lifting bracket (7) slides along the fixed bracket (2). A multi-stage telescopic cylinder (8) is installed on the fixed bracket (2). The telescopic end of the multi-stage telescopic cylinder (8) is fixedly connected to the lifting bracket (7). A cloth sweeping component is provided at the vertical arm end of the lifting bracket (7). The cloth sweeping component is located on one side of the rubber roller (6). A rolling component is provided at the horizontal arm end of the lifting bracket (7). The rolling component is located on the tail surface of the processing table (1).

2. The fabric pressing device for garment processing according to claim 1, characterized in that, The traction clamping assembly includes a fixed clamping plate (9), which is fixedly connected to one side of the surface of the traction base plate (4). Two guide rods (10) are fixedly connected to the side wall of the fixed clamping plate (9). Guide sleeves (11) are slidably connected to the guide rods (10). A movable clamping plate (12) is fixedly connected between the two guide sleeves (11). The movable clamping plate (12) slides along the guide rods (10) through the guide sleeves (11). A clamping cylinder (13) is fixedly connected to one side of the surface of the traction base plate (4). The output end of the clamping cylinder (13) is fixedly connected to the side wall of the movable clamping plate (12).

3. The fabric pressing device for garment processing according to claim 2, characterized in that, Both the movable clamp (12) and the fixed clamp (9) are vertically arranged. Rubber anti-slip pads (30) are fixedly connected to the side walls of the movable clamp (12) and the fixed clamp (9). The rubber anti-slip pads (30) on the movable clamp (12) and the rubber anti-slip pads (30) on the fixed clamp (9) are opposite in position and the same in size.

4. The fabric pressing device for garment processing according to claim 1, characterized in that, The fabric smoothing assembly includes a soft brush roller (14). Multiple sets of bearing seats (15) are fixedly installed on the vertical arm end of the lifting bracket (7). The soft brush roller (14) is rotatably connected to the bearing seat (15). The top end of the soft brush roller (14) passes through the upper bearing seat (15). Multiple stepper motors (16) are fixedly installed on the top of the lifting bracket (7). The output end of the stepper motor (16) is fixedly connected to a drive shaft (17). The drive shaft (17) is connected to the soft brush roller (14) through a connector (18). The soft brush roller (14) is located below the rubber roller (6) on one side.

5. The fabric pressing device for garment processing according to claim 4, characterized in that, The soft brush roller (14) and stepper motor (16) are provided in two sets, with 2-4 soft brush rollers (14) and stepper motors (16) in each set, and the rotation directions of each soft brush roller (14) are opposite.

6. The fabric pressing device for garment processing according to claim 1, characterized in that, The rolling assembly includes a heating roller (19), and two fixing parts (20) are fixedly connected to the bottom surface of the horizontal arm end of the lifting bracket (7). A central shaft (21) is fixedly connected between the two fixing parts (20). The heating roller (19) is mounted on the central shaft (21) through a bearing (22). The heating roller (19) is hollow inside. An electric heating tube (23) is fixedly connected to the central shaft (21). Multiple electric heating tubes (23) are provided and evenly distributed along the axis on the central shaft (21). A thermocouple temperature probe (24) is connected to the central shaft (21).

7. The fabric pressing device for garment processing according to claim 6, characterized in that, The outer wall of the heating drum (19) is provided with a heat-conducting layer (25), and the heat-conducting layer (25) is covered with a ceramic coating (26).

8. The fabric pressing device for garment processing according to claim 6, characterized in that, The fixed bracket (2) has vertical guide slots (27) on both sides. The lifting bracket (7) has guide sliders (28) fixedly connected to both sides. The guide sliders (28) are located in the guide slots (27) and slide along the guide slots (27). One end of the central shaft (21) passes through the fixing member (20) and extends out of the guide slots (27). The end of the central shaft (21) extending out of the guide slots (27) is provided with a wiring hole (29).

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