A continuous dyeing device for polyester warp knitted fabric

Abstract

The present invention relates to the field of fabrics, and specifically relates to a continuous dyeing device for polyester warp knitted fabrics, which includes vertical plates arranged oppositely and several dyeing tanks arranged between the vertical plates. There is a dyeing space between the two vertical plates; a plurality of rollers arranged in the dyeing space; a flexible plate and an end plate provided with a stable hole. The flexible plate passes through the stable hole, and the flexible plate is slidably connected to the stable hole. The vertical plate is provided with a placement hole penetrating through its two side surfaces, and the placement hole is directly in front of the foremost dyeing tank. Through grooves are provided on both the upper and lower surfaces of the flexible plate, and the placement holes in the dyeing space are symmetrically arranged; a fixing part for fixing the polyester warp knitted fabric in the through groove after the polyester warp knitted fabric passes through the through groove. With this device, continuous dyeing can be achieved. When a roll of polyester warp knitted fabric is completely released during the dyeing process, another roll of polyester warp knitted fabric is connected to the previous roll of polyester warp knitted fabric through the flexible plate, ensuring that the tension does not disappear, thereby ensuring uniform dyeing of the polyester warp knitted fabric.

Description

Technical Field

[0001] The present invention relates to the field of fabrics, and particularly to a continuous dyeing device for polyester warp knitted fabrics. Background Art

[0002] Polyester warp knitted fabrics are woven with low-elastic polyester filaments of the same denier or interwoven with low-elastic filaments of different deniers. The commonly used structure is the warp plain velvet structure which combines the warp plain structure and the warp pile structure. The fabric is then processed by dyeing to form a solid-color fabric. During the dyeing process, the polyester warp knitted fabric will pass through each dyeing tank in sequence. The applicant has found that when a roll of polyester warp knitted fabric is fully released during the dyeing process, the last part of the polyester warp knitted fabric has no tension, resulting in uneven dyeing when entering the dyeing tank for dyeing.

[0003] In the patent with the application number CN202020528141.1 and the patent name of a continuous dyeing device for polyester warp knitted fabrics with disperse dyes without water washing, it includes two dyeing tanks, an active roller is arranged between the two dyeing tanks, support plates are arranged on both sides of the active roller, a first rotating shaft penetrates through the middle of the active roller, and the two ends of the first rotating shaft penetrate through the two support plates respectively. An extrusion wheel is arranged above the active roller, a second rotating shaft penetrates through the middle of the extrusion wheel, and the two ends of the second rotating shaft penetrate through the two support plates respectively. A limiting sliding groove is opened in the middle of one side surface of the support plate, and two limiting sliding sleeves are arranged in each of the two limiting sliding grooves. In this application, although the tension can be adjusted, it is impossible to ensure that the last part of the polyester warp knitted fabric maintains tension, so the above technical problem cannot be solved. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a continuous dyeing device for polyester warp knitted fabrics to solve the problem that when a roll of polyester warp knitted fabric is fully released during the dyeing process, the last part of the polyester warp knitted fabric has no tension, resulting in uneven dyeing when entering the dyeing tank for dyeing.

[0005] Based on the above purpose, the present invention provides a continuous dyeing device for polyester warp knitted fabrics, including opposite vertical plates and a plurality of dyeing tanks arranged between the vertical plates. There is a dyeing space between the two vertical plates. The continuous dyeing device further includes:

[0006] A plurality of roller wheels arranged in the dyeing space, and the roller wheels are used to guide the polyester warp knitted fabric into each dyeing tank;

[0007] A flexible plate and an end plate provided with a stabilizing hole, the flexible plate passing through the stabilizing hole and being slidably connected to the stabilizing hole. The vertical plate is provided with a placement hole penetrating through both of its side surfaces, and the placement hole is directly in front of the foremost dyeing tank. Through grooves are provided on both the upper and lower surfaces of the flexible plate, and the placement holes in the dyeing space are symmetrically arranged. When the end plate passes through the two placement holes, the flexible plate is located within the dyeing space;

[0008] A fixing portion for fixing the polyester warp knitted fabric within the through groove after the polyester warp knitted fabric passes through the through groove.

[0009] Furthermore, the continuous dyeing device further includes:

[0010] A sliding hole provided on the side surface of the vertical plate, and the end of the wheel axle of the roller is slidably connected to the corresponding sliding hole;

[0011] A first air cylinder provided on the side surface of the vertical plate, and the output shaft of the first air cylinder is fixedly connected to the side surface of the wheel axle of the roller.

[0012] Furthermore, there are two end plates, and the two end plates are symmetrically arranged

[0013] Furthermore, the continuous dyeing device further includes:

[0014] Two driving rollers located within the dyeing space, and the two driving rollers are in front of the placement holes;

[0015] A guiding roller provided between the driving roller and the placement hole. When the flexible plate is within the dyeing space, the guiding roller is close to the corresponding through groove.

[0016] Furthermore, the fixing portion includes:

[0017] Perforations symmetrically provided on the upper and lower sides of the placement hole, and the perforations communicate with the placement hole;

[0018] An inner plate located within the dyeing space, the end of the inner plate being slidably connected to the corresponding perforation, and a plurality of lower holes are provided on the surface of the inner plate facing the perforation;

[0019] A first spring with one end fixed to the inner wall of the perforation facing the placement hole, and the other end of the first spring fixed to the side surface of the inner plate;

[0020] A first electromagnet provided within the inner wall of the lower hole facing the placement hole;

[0021] A fixing needle for being placed within the lower hole. After the fixing needle is placed within the lower hole, the tip of the fixing needle faces the flexible plate;

[0022] A driving assembly for driving the inner plate to move towards the placement hole.

[0023] Further, the lower holes on the two inner plates are arranged in a staggered manner.

[0024] Further, the driving assembly includes:

[0025] A second air cylinder and an end block provided on the output shaft of the second air cylinder, the end block facing the corresponding perforation;

[0026] A linkage rod whose side surface is hinged to the end block, and a sliding groove is provided on the side surface of the linkage rod;

[0027] A connecting block and a second spring with one end fixed to the side surface of the connecting block, the connecting block is slidably connected to the sliding groove, and the other end of the second spring is fixed to one side of the sliding groove;

[0028] A pressing rod whose side surface is fixedly connected to the connecting block, and the pressing rod is used to apply pressure to the flexible plate;

[0029] A side rod provided on the side surface of the second air cylinder and a vertical rod with a side groove provided on its side surface, one end of the side rod is slidably connected to the side groove;

[0030] A slider hinged to the bottom end of the vertical rod, and the slider is slidably connected to a surface groove provided on the side surface of the linkage rod;

[0031] A fourth spring with one end fixed to the side surface of the side rod, and the other end of the fourth spring is fixed to one end of the side groove;

[0032] An extension plate provided on the side surface of the output shaft of the second air cylinder;

[0033] A connection and separation member provided between the extension plate and the linkage rod, and the connection and separation member is used to connect or separate the extension plate and the linkage rod from each other.

[0034] Further, the connection and separation member includes:

[0035] A top block provided on the side surface of the linkage rod, and an end face hole is provided on the end face of the top block facing the extension plate;

[0036] A limiting plate slidably connected to the end face hole, and a limiting groove corresponding to the limiting plate is provided on the side surface of the extension plate;

[0037] A second electromagnet provided at the bottom of the end face hole;

[0038] A third spring with one end fixed to the bottom of the end face hole, and the other end of the third spring is fixed to the end face of the limiting plate.

[0039] Advantages of the present invention: By using the continuous dyeing device for polyester warp knitted fabric of the present invention, during dyeing, first place the end plate between two placement holes so that the flexible plate is located in the dyeing space. After completion, first pass a roll of polyester warp knitted fabric through one of the through slots and let the roll of polyester warp knitted fabric pass through each dyeing box for dyeing. Then pass another roll of polyester warp knitted fabric through the other through slot. After all the polyester warp knitted fabric being dyed is released, during the process that the last part of the polyester warp knitted fabric is passing through the corresponding through slot, fix the polyester warp knitted fabric in the corresponding through slot through the fixing part. Then drive the flexible plate and the polyester warp knitted fabric that has not been dyed into the dyeing box for dyeing. At this time, remove the end plate in the placement hole, place another flexible plate in the end plate. After completion, place the end plate between the two placement holes again and repeat the above steps. Through this device, continuous dyeing can be achieved. When a roll of polyester warp knitted fabric is completely released during the dyeing process, another roll of polyester warp knitted fabric is connected to the previous roll of polyester warp knitted fabric through the flexible plate to ensure that the tension does not disappear, thereby ensuring uniform dyeing of the polyester warp knitted fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0041] Figure 1 is the front cross-sectional view of the present invention;

[0042] Figure 2 is the rear view of the middle plate of the present invention;

[0043] Figure 3 is Figure 1 the enlarged view of part A in

[0044] Figure 4 is the partial enlarged view of the flexible plate of the present invention;

[0045] Figure 5 is the partial enlarged view of the perforation of the present invention;

[0046] Figure 6 is the partial enlarged view of the linkage rod of the present invention;

[0047] Figure 7 is the partial enlarged view of the extension plate and the top block of the present invention.

[0048] The labels in the figure are:

[0049] 1. Vertical plate; 2. Dyeing box; 3. Roller; 4. Slide hole; 5. Driving roller; 6. Guide roller; 7. First cylinder; 8. Vertical rod; 9. Placing hole; 10. End plate; 11. Side rod; 12. Side groove; 13. Second cylinder; 14. Linking rod; 15. Pressing rod; 16. Perforation; 17. Flexible plate; 18. Through groove; 19. Inner plate; 20. First spring; 21. Fixed needle; 22. Lower hole; 23. First electromagnet; 24. Connecting block; 25. Slide groove; 26. Second spring; 27. Fourth spring; 28. End block; 29. Extension plate; 30. Top block; 31. Limit groove; 32. Limit plate; 33. End face hole; 34. Second electromagnet; 35. Third spring. Detailed implementation mode

[0050] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with specific embodiments.

[0051] It should be noted that unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meanings understood by those with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0052] In the first aspect of the present invention, a continuous dyeing device for polyester warp knitted fabric is proposed. As Figure 1 , Figure 2 , Figure 4 shown, it includes relatively arranged vertical plates 1 and several dyeing boxes 2 arranged between the vertical plates 1. There is a dyeing space between the two vertical plates 1. The continuous dyeing device further includes:

[0053] A plurality of rollers 3 arranged in the dyeing space, and the rollers 3 are used to guide the polyester warp knitted fabric into each dyeing box 2;

[0054] The flexible plate 17 and the end plate 10 provided with stabilizing holes, the flexible plate 17 passes through the stabilizing holes, and the flexible plate 17 is slidably connected to the stabilizing holes. The vertical plate 1 is provided with a placement hole 9 penetrating through its two side surfaces. The placement hole 9 is directly in front of the foremost dyeing tank 2. Through grooves 18 are provided on both the upper and lower surfaces of the flexible plate 17. The placement holes 9 in the dyeing space are symmetrically arranged. When the end plate 10 passes through the two placement holes 9, the flexible plate 17 is located in the dyeing space;

[0055] A fixing portion for fixing the polyester warp knitted fabric in the through groove 18 after the polyester warp knitted fabric passes through the through groove 18.

[0056] In this embodiment, during dyeing, first place the end plate 10 between the two placement holes 9 so that the flexible plate 17 is located in the dyeing space. After completion, first pass a roll of polyester warp knitted fabric through one of the through grooves 18 and make the roll of polyester warp knitted fabric pass through each dyeing tank 2 for dyeing. Then pass another roll of polyester warp knitted fabric through the other through groove 18. After all the polyester warp knitted fabric being dyed is released, during the process that the last part of the polyester warp knitted fabric is passing through the corresponding through groove 18, fix the polyester warp knitted fabric in the corresponding through groove 18 through the fixing portion. Then drive the flexible plate 17 and the polyester warp knitted fabric not yet dyed into the dyeing tank 2 for dyeing. At this time, remove the end plate 10 in the placement hole 9, place another flexible plate 17 in the end plate 10. After completion, place the end plate 10 between the two placement holes 9 again and repeat the above steps. Through this device, continuous dyeing can be achieved. When a roll of polyester warp knitted fabric is completely released during the dyeing process, another roll of polyester warp knitted fabric is connected to the previous roll of polyester warp knitted fabric through the flexible plate 17 to ensure that the tension does not disappear, thereby ensuring uniform dyeing of the polyester warp knitted fabric.

[0057] As an implementation manner, such as Figure 1 、 Figure 2 , the continuous dyeing device further includes:

[0058] A sliding hole 4 provided on the side surface of the vertical plate 1, and the end of the wheel shaft of the roller 3 is slidably connected to the corresponding sliding hole 4;

[0059] A first cylinder 7 provided on the side surface of the vertical plate 1, and the output shaft of the first cylinder 7 is fixedly connected to the side surface of the wheel shaft of the roller 3.

[0060] Here, considering the thickness of the flexible plate 17, during the transmission process, when contacting the roller 3, the tension of the polyester warp knitted fabric increases. When the flexible plate 17 is about to contact one of the rollers 3, the corresponding first cylinder 7 drives the roller 3 to move downward by a certain distance so that when the flexible plate 17 contacts the roller 3, the change range of the tension is as small as possible.

[0061] As an implementation manner, such as Figure 4As shown, there are two end plates 10, and the two end plates 10 are symmetrically arranged to ensure the stability of the flexible plate 17 after the end plate 10 enters the placement hole 9.

[0062] As an implementation manner, as Figure 1 shown, the continuous dyeing device further includes:

[0063] Two driving rollers 5 located in the dyeing space, and the two driving rollers 5 are located in front of the placement hole 9;

[0064] A guiding roller 6 provided between the driving roller 5 and the placement hole 9. When the flexible plate 17 is located in the dyeing space, the guiding roller 6 is close to the corresponding through groove 18.

[0065] Here, it is used to guide the polyester warp knitted fabric to enter the through groove 18 horizontally.

[0066] As an implementation manner, as Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 shown, the fixing part includes:

[0067] Perforations 16 symmetrically arranged on the upper and lower sides of the placement hole 9, and the perforations 16 communicate with the placement hole 9;

[0068] An inner plate 19 located in the dyeing space, the end of the inner plate 19 is slidably connected to the corresponding perforation 16, and several lower holes 22 are provided on the surface of the inner plate 19 facing the perforation 16;

[0069] A first spring 20 with one end fixed to the inner wall of the perforation 16 facing the placement hole 9, and the other end of the first spring 20 is fixed to the side surface of the inner plate 19;

[0070] A first electromagnet 23 provided in the inner wall of the lower hole 22 facing the placement hole 9;

[0071] A fixing needle 21 for being placed in the lower hole 22. After the fixing needle 21 is placed in the lower hole 22, the needle head of the fixing needle 21 faces the flexible plate 17;

[0072] A driving component for driving the inner plate 19 to move towards the placement hole 9.

[0073] In this embodiment, the fixing pins 21 are sequentially placed in the lower holes 22, and then the first electromagnet 23 is energized to generate an attractive force on the fixing pins 21, so that the fixing pins 21 can be stably stored in the lower holes 22. Under the action of the first spring 20, it is ensured that the fixing pins 21 are far away from the flexible plate 17. When the polyester warp knitted fabric needs to be fixed in the through groove 18, the driving assembly drives the inner plate 19 to move towards the placing hole 9, so that the fixing pins 21 pass through the polyester warp knitted fabric and are inserted into the flexible plate 17, thereby fixing the polyester warp knitted fabric in the flexible plate 17. At the same time, the first electromagnet 23 is de-energized. After the driving assembly disengages from the inner plate 19, under the action of the first spring 20, the inner plate 19 returns to its original position.

[0074] Here, preferably, the lower holes 22 on the two inner plates 19 are arranged in a staggered manner to prevent the fixing pins 21 on the two inner plates 19 from colliding with each other during the insertion into the flexible plate 17.

[0075] As an implementation manner, as Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 shown, the driving assembly includes:

[0076] A second cylinder 13 and an end block 28 provided on the output shaft of the second cylinder 13, and the end block 28 faces the corresponding through hole 16;

[0077] A linkage rod 14 whose side surface is hinged to the end block 28, and a chute 25 is provided on the side surface of the linkage rod 14;

[0078] A connecting block 24 and a second spring 26 whose one end is fixed to the side surface of the connecting block 24, the connecting block 24 is slidably connected to the chute 25, and the other end of the second spring 26 is fixed to one side of the chute 25;

[0079] A pressing rod 15 whose side surface is fixedly connected to the connecting block 24, and the pressing rod 15 is used to apply pressure to the flexible plate 17;

[0080] A side rod 11 provided on the side surface of the second cylinder 13 and a vertical rod 8 provided with a side groove 12 on its side surface, and one end of the side rod 11 is slidably connected to the side groove 12;

[0081] A slider hinged to the bottom end of the vertical rod 8, and the slider is slidably connected to the surface groove provided on the side surface of the linkage rod 14;

[0082] A fourth spring 27 whose one end is fixed to the side surface of the side rod 11, and the other end of the fourth spring 27 is fixed to one end of the side groove 12;

[0083] An extension plate 29 provided on the side surface of the output shaft of the second air cylinder;

[0084] A connecting and separating member disposed between the extension plate 29 and the linkage rod 14, and the connecting and separating member is used to connect or separate the extension plate 29 and the linkage rod 14.

[0085] In this embodiment, when one of the polyester warp knitted fabrics is being dyed and a part of the other polyester warp knitted fabric is placed in the through groove 18, the connecting and separating member connects the extension plate 29 and the linkage rod 14 to each other. Then, the air cylinder drives the pressing rod 15 to apply a certain pressure to the polyester warp knitted fabric in the through groove 18. In this way, after all the polyester warp knitted fabric being dyed is released, the tension force will not suddenly disappear. Then, the connecting and separating member separates the extension plate 29 and the linkage rod 14 from each other. At this time, the air cylinder applies pressure to the linkage rod 14 again, causing the linkage rod 14 to move towards the inner plate 19, and finally driving the inner plate 19 to move towards the placement hole 9, so that the fixing needle 21 is inserted into the flexible plate 17.

[0086] As an implementation manner, as Figure 7 shown, the connecting and separating member includes:

[0087] A top block 30 disposed on the side surface of the linkage rod 14, and an end face hole 33 is provided on the end face of the top block 30 facing the extension plate 29;

[0088] A limiting plate 32 slidably connected to the end face hole 33, and a limiting groove 31 corresponding to the limiting plate 32 is provided on the side surface of the extension plate 29;

[0089] A second electromagnet 34 disposed at the bottom of the end face hole 33;

[0090] A third spring 35 with one end fixed to the bottom of the end face hole 33, and the other end of the third spring 35 is fixed to the end face of the limiting plate 32.

[0091] Here, when the top end of the limiting plate 32 is located in the limiting groove 31 under the action of the third spring 35, when an external force is applied to the linkage rod 14 by the air cylinder, only the pressing rod 15 is driven to apply an external force to the flexible plate 17. When the second electromagnet 34 is energized and the limiting plate 32 is separated from the limiting groove 31, at this time, the linkage rod 14 will drive the linkage rod 14 to rotate.

[0092] Those of ordinary skill in the art should understand that: the discussion of any above embodiment is only exemplary, and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, and they are not provided in detail for the sake of brevity.

[0093] The present invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A continuous dyeing device for polyester warp knitted fabric, comprising vertical plates (1) arranged oppositely and a plurality of dyeing tanks (2) arranged between the vertical plates (1). There is a dyeing space between the two vertical plates (1). It is characterized in that the continuous dyeing device further comprises: a plurality of rollers (3) arranged in the dyeing space, and the rollers (3) are used to guide the polyester warp knitted fabric into each dyeing tank (2); a flexible plate (17) and an end plate (10) provided with a stable hole. The flexible plate (17) passes through the stable hole, and the flexible plate (17) is slidably connected to the stable hole. The vertical plate (1) is provided with a placement hole (9) penetrating through its two side surfaces. The placement hole (9) is directly in front of the foremost dyeing tank (2). Through grooves (18) are provided on both the upper and lower surfaces of the flexible plate (17). The placement holes (9) in the dyeing space are symmetrically arranged. When the end plate (10) passes through the two placement holes (9), the flexible plate (17) is located in the dyeing space; a fixing part for fixing the polyester warp knitted fabric in the through groove (18) after the polyester warp knitted fabric passes through the through groove (18); the continuous dyeing device further comprises: a sliding hole (4) arranged on the side surface of the vertical plate (1), and the end of the wheel shaft of the roller (3) is slidably connected to the corresponding sliding hole (4); a first cylinder (7) arranged on the side surface of the vertical plate (1), and the output shaft of the first cylinder (7) is fixedly connected to the side surface of the wheel shaft of the roller (3); two end plates (10) are provided, and the two end plates (10) are symmetrically arranged; the continuous dyeing device further comprises: two driving rollers (5) located in the dyeing space, and the two driving rollers (5) are located in front of the placement hole (9); a guiding roller (6) arranged between the driving roller (5) and the placement hole (9). When the flexible plate (17) is located in the dyeing space, the guiding roller (6) is close to the corresponding through groove (18); the fixing part comprises: perforations (16) symmetrically arranged on the upper and lower sides of the placement hole (9), and the perforations (16) communicate with the placement hole (9); an inner plate (19) located in the dyeing space, and the end of the inner plate (19) is slidably connected to the corresponding perforation (16). A plurality of lower holes (22) are provided on the surface of the inner plate (19) facing the perforation (16); a first spring (20) with one end fixed to the inner wall of the perforation (16) facing the placement hole (9), and the other end of the first spring (20) is fixed to the side surface of the inner plate (19); a first electromagnet (23) arranged in the inner wall of the lower hole (22) facing the placement hole (9); a fixing needle (21) for being placed in the lower hole (22). After the fixing needle (21) is placed in the lower hole (22), the needle head of the fixing needle (21) faces the flexible plate (17); a driving component for driving the inner plate (19) to move towards the placement hole (9); the lower holes (22) on the two inner plates (19) are arranged in a staggered manner; the driving component comprises: a second cylinder (13) and an end block (28) arranged on the output shaft of the second cylinder (13), and the end block (28) faces the corresponding perforation (16); The linkage rod (14) with a side surface hinged to the end block (28), and a chute (25) is provided on the side surface of the linkage rod (14); The connecting block (24) and the second spring (26) with one end fixed to the side surface of the connecting block (24), the connecting block (24) is slidably connected to the chute (25), and the other end of the second spring (26) is fixed to one side of the chute (25); The pressure rod (15) with a side surface fixedly connected to the connecting block (24), and the pressure rod (15) is used to apply pressure to the flexible plate (17); The side rod (11) provided on the side surface of the second cylinder (13) and the vertical rod (8) with a side groove (12) provided on the side surface, and one end of the side rod (11) is slidably connected to the side groove (12); The slider hinged to the bottom end of the vertical rod (8), and the slider is slidably connected to the surface groove provided on the side surface of the linkage rod (14); The fourth spring (27) with one end fixed to the side surface of the side rod (11), and the other end of the fourth spring (27) is fixed to one end of the side groove (12); The extension plate (29) provided on the side surface of the second air output shaft; The connection and separation member provided between the extension plate (29) and the linkage rod (14), and the connection and separation member is used to connect or separate the extension plate (29) and the linkage rod (14); The connection and separation member includes: The top block (30) provided on the side surface of the linkage rod (14), and an end face hole (33) is provided on the end face of the top block (30) facing the extension plate (29); The limiting plate (32) slidably connected to the end face hole (33), and a limiting groove (31) corresponding to the limiting plate (32) is provided on the side surface of the extension plate (29); The second electromagnet (34) provided at the bottom of the end face hole (33); The third spring (35) with one end fixed to the bottom of the end face hole (33), and the other end of the third spring (35) is fixed to the end face of the limiting plate (32).

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