Cover plate structure for carding machine

Abstract

The utility model discloses a cover plate structure for a carding machine, which comprises a cover plate body and a belt transmission mechanism, the belt transmission mechanism comprises four rotating shafts rotating in the carding machine, four pairs of synchronous wheels respectively sleeved on the four rotating shafts, and two synchronous belts respectively sleeved on the two synchronous wheels arranged on the four rotating shafts, quick disassembly and assembly mechanisms connected with each other are arranged between the two synchronous belts and the cover plate body respectively; the rapid dismounting and mounting mechanism comprises a supporting plate fixed to the synchronous belt, a limiting block vertically fixed to the top of the supporting plate, a long strip plate fixed to the bottom of the cover plate body, a pair of square holes formed in one side of the limiting block, a pair of sliding blocks sliding in the two square holes correspondingly, and a sliding assembly controlling the two sliding blocks to synchronously slide relative to the square holes. The clamping hooks are connected with the two sliding blocks respectively, and the square protrusions are fixedly arranged on the two sides of the long strip plate respectively. The utility model has the advantages that the cover plate is simple and convenient to disassemble and replace, and the cover plate disassembling and replacing process is safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery technology, and in particular to a cover plate structure for a carding machine. Background Technology

[0002] The carding machine is one of the core pieces of equipment in textile processing. It is mainly used to open, remove impurities, and comb fiber raw materials (such as cotton and synthetic fibers) to form a uniform cotton web for subsequent processes. The flats, as an important component of the carding machine, usually work in conjunction with the cylinder (roller). Through the carding cloth or toothed strips on their surface, they finely comb the fibers, removing short fibers and impurities, while improving fiber parallelism and cleanliness. Currently, carding machines often have multiple flats, driven by belts or chains, which circulate them in a specific order along the fiber trajectory on the cylinder surface. Because the flats are mainly fixed to the transmission mechanism by screws and end caps, disassembling and replacing the flats is not only cumbersome but also prone to causing wear and tear on the transmission components during the process, leading to a reduction in the lifespan of the transmission mechanism. Utility Model Content

[0003] The purpose of this utility model is to provide a cover plate structure for a carding machine, which has the advantages of simple and convenient cover plate replacement and safe and reliable replacement process.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a cover plate structure for a carding machine, comprising multiple parallel and spaced cover plate bodies with needle cloth and toothed racks on their surfaces, and a belt drive mechanism connecting all cover plate bodies and driving their movement. The belt drive mechanism includes four rotating shafts in the carding machine, four pairs of synchronous pulleys respectively sleeved on the four rotating shafts, and two synchronous belts respectively sleeved on two synchronous pulleys on the four rotating shafts. All the cover plate bodies are evenly arranged on the outer surface of the synchronous belts, and quick-release mechanisms are provided between the two synchronous belts and the cover plate bodies respectively. The quick-release mechanisms include a support plate horizontally fixed on the synchronous belts and a top of the support plate vertically fixed. The system includes a limiting block, a long strip plate fixed to the bottom of the cover plate body with its ends in contact with one side of the limiting block, a pair of square holes opened on one side of the limiting block and horizontally located on both sides of the long strip plate, a pair of sliders that slide inside the two square holes respectively, a sliding component that controls the two sliders to slide synchronously relative to the square holes, a pair of hooks that connect the two sliders respectively and extend out of the two square holes respectively, and a pair of square protrusions that are fixedly set on both sides of the long strip plate; the long strip plate is placed on a support plate on two synchronous belts, and the limiting blocks on the two support plates are respectively positioned in contact with the two ends of the long strip plate, the opening of the square hole is located on the side of the limiting block in contact with the long strip plate, the long strip plate is located in the middle of the opening of the two square holes, and the hooks extending from the openings of the two square holes can respectively hook the square protrusions on both sides of the long strip plate.

[0005] A further feature of this invention is that: a rectangular groove is provided on the side wall of the limiting block, and two square holes are located at the bottom of the rectangular groove; a square plate is fixed in the rectangular groove with screws; the square plate covers the two square holes; and a pair of square notches are provided at the bottom for the two hook bodies to pass through.

[0006] A further feature of this invention is that a plurality of rubber connectors are uniformly fixed on the outer surface of the synchronous belt, and a connection hole for inserting the rubber connectors is provided on the support plate.

[0007] The present invention is further configured as follows: the sliding assembly includes a pair of springs respectively placed in the two square holes and located between the slider and the square plate, a pair of sliding rods respectively fixed to the side of the two sliders opposite to the hook, and a long push plate for pushing the two sliding rods. The limiting block has two through holes on the side opposite to the long strip plate, and the two sliding rods slide through the two through holes respectively. The long push plate is screwed to connect one end of the two sliding rods that passes through the square hole and the through hole.

[0008] A further feature of this invention is that it includes a cover plate cleaning mechanism, which comprises a long strip box fixed to the carding machine frame with its opening facing upwards, a long box cover hinged to the top of the long strip box and capable of covering the opening of the long strip box, multiple dust suction holes opened on the long box cover, multiple connecting pipes fixed to the top of the long box cover and respectively surrounding each dust suction hole, and multiple suction hoses respectively sleeved on each connecting pipe. The long strip box has inlets and outlets on both sides for the synchronous belt and the cover plate body to pass through. A locking component is provided between the long box cover and the long strip box to lock the flip of the long box cover. When the long box cover is closed on the opening of the long strip box, the suction holes face the upper surface of the cover plate body. All the suction hoses are connected to a dust collection device outside the carding machine.

[0009] A further feature of this invention is that the locking assembly includes a pair of locking plates fixed to the top of the long box body and located at both ends of the long box cover, the locking plates and the adjacent end wall of the long box cover having coaxial pin holes with the same inner diameter, and pins that are movably inserted into the pin holes on the locking plates and the pin holes on the end wall of the long box cover. The long box cover has two square notches at both ends, and the locking plates are located inside the two square notches, with the pin holes located on the inner wall of the two square notches.

[0010] A further feature of this invention is that: a roller is rotatably provided on one side of the long push plate, and a guide plate is slidably provided inside the long box for the roller to roll into contact with it. The guide plate is vertical in the middle and bent at both ends away from the direction of the roller. An adjustment component is provided on the long box to control the guide plate to slide closer to or away from the end of the cover plate body.

[0011] A further feature of this invention is that a pair of horizontally parallel guide rods are fixedly connected to the side of the guide plate opposite to the roller, and the guide rods slide through the side wall of the long box.

[0012] A further feature of this invention is that the adjusting assembly includes a nut fixed to the outer wall of the long box, an adjusting screw threaded to the nut, and a pair of springs respectively sleeved on the two guide rods. One end of the adjusting screw passes into the interior of the long box and contacts the side of the guide plate opposite to the roller. The two ends of the springs are respectively fixedly connected to the guide plate and the inner wall of the long box, and the elastic force of the springs pulls one side of the guide plate tightly against one end of the adjusting screw.

[0013] A further feature of this invention is that the end of the adjusting screw furthest from the guide plate is fixedly connected to a flat knob for the user to manually rotate.

[0014] The beneficial effects of this utility model are as follows: By adopting the above-mentioned cover plate structure, when it is necessary to replace the cover plate body, firstly, manually turn the adjusting screw so that the adjusting screw is screwed into the long box. Since one end of the adjusting screw is in close contact with the guide plate under the action of the spring force, the guide plate will move towards the end of the cover plate body due to the movement of the adjusting screw, until it stops at the position where the roller can fully roll and contact its side. Then, the synchronous belt and synchronous pulley bring the cover plate body to be replaced into the long box. Since the roller of the long push plate rolls and contacts the guide plate, and the guide plate is vertical in the middle and bent at both ends, the roller will push the long push plate against the guide plate as it rolls along the guide plate. The two sliders of the long push plate are connected to the near limit block via two sliding rods. Under the movement of the long push plate, the two hooks will be pushed out of the two square holes. Since the hooks previously hooked the square protrusions on the side wall of the long plate to fix the cover plate body and the long plate to the two support plates, after the above movement, the hook tip will separate from the square protrusion, thereby releasing the fixation on the long plate and the cover plate body. Then, the staff will pull out the pin on the locking plate to release the lock of the long box cover flipping. Finally, the staff will manually flip the long box cover to one side of the opening of the long box body and reach into the long box body to easily take out the old cover plate body and put in the new cover plate body.

[0015] The above-described process of replacing the cover plate body is not only simple and convenient to operate, but also safe and reliable because the timing belt and timing pulley do not directly participate in the replacement process. It will not cause wear to the transmission components of the transmission mechanism, thus effectively ensuring the service life of the transmission mechanism. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of this embodiment;

[0018] Figure 2 This is a schematic diagram of the cover plate cleaning mechanism in this embodiment;

[0019] Figure 3 This is a cross-sectional view of the cover plate and quick-release mechanism in this embodiment;

[0020] Figure 4 This is an exploded view of the quick assembly / disassembly mechanism in this embodiment;

[0021] Figure 5 yes Figure 2 Enlarged view of point A;

[0022] In the diagram: 1. Cover plate body; 2. Belt drive mechanism; 21. Rotating shaft; 22. Synchronous pulley; 23. Synchronous belt; 231. Rubber connector; 3. Quick disassembly / assembly mechanism; 31. Support plate; 311. Connecting hole; 32. Limiting block; 321. Square hole; 322. Rectangular groove; 323. Connecting hole; 324. Square plate; 325. Square notch one; 33. Long strip plate; 34. Slider; 35. Sliding assembly; 351. Spring one; 352. Slide rod; 353. Long pusher 36. Hook; 37. Square protrusion; 4. Cover cleaning mechanism; 41. Long box body; 411. Inlet; 412. Outlet; 42. Long box cover; 421. Dust suction hole; 422. Square notch II; 43. Connecting pipe; 44. Suction hose; 5. Locking assembly; 51. Locking plate; 52. Pin hole; 53. Pin; 6. Roller; 7. Guide plate; 71. Guide rod; 8. Adjusting assembly; 81. Nut; 82. Adjusting screw; 821. Flat knob; 83. Spring II. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] Example: A cover plate structure for a carding machine, such as Figure 1-5As shown, the device includes multiple parallel, spaced cover plate bodies 1 with needle cloth and toothed racks on their surfaces, and a belt drive mechanism 2 connecting all cover plate bodies 1 and driving their movement. The belt drive mechanism 2 includes four rotating shafts 21 rotating in the carding machine, four pairs of synchronous pulleys 22 respectively sleeved on the four rotating shafts 21, and two synchronous belts 23 respectively sleeved on the two synchronous pulleys 22 on the four rotating shafts 21. All cover plate bodies 1 are evenly arranged on the outer surface of the synchronous belts 23, and quick-release mechanisms 3 are provided between the two synchronous belts 23 and the cover plate bodies 1 respectively. The quick-release mechanism 3 includes a support plate 31 horizontally fixed on the synchronous belts 23, a vertically fixed top limiting block 32 for the support plate 31, and a long strip plate 33 fixed to the bottom of the cover plate body 1 with its end in contact with one side of the limiting block 32. A pair of square holes 321 are formed on one side of the limiting block 32 and horizontally located on both sides of the long strip plate 33; a pair of sliders 34 are respectively slidable inside the two square holes 321; a sliding component 35 controls the two sliders 34 to slide synchronously relative to the square holes 321; a pair of hooks 36 are respectively connected to the two sliders 34 and extend out of the two square holes 321; and a pair of square protrusions 37 are respectively fixed on both sides of the long strip plate 33. The long strip plate 33 rests on the support plates 31 on the two synchronous belts 23, and the limiting blocks 32 on the two support plates 31 are respectively positioned to contact the two ends of the long strip plate 33. The openings of the square holes 321 are located on the side of the limiting block 32 that contacts the long strip plate 33. The long strip plate 33 is located in the middle of the openings of the two square holes 321, and the hooks 36 extending from the openings of the two square holes 321 can respectively hook the square protrusions 37 on both sides of the long strip plate 33.

[0025] Furthermore, the side wall of the limiting block 32 is provided with a rectangular groove 322, and two square holes 321 are located at the bottom of the rectangular groove 322. A square plate 324 is fixed in the rectangular groove 322 with screws, covering the two square holes 321, and a pair of square notches 325 are provided at the bottom for the hooks of the two hooks 36 to pass through. By using the above-mentioned rectangular groove 322 and square plate 324, it is convenient for workers to disassemble and assemble the moving parts in the square holes 321.

[0026] Furthermore, multiple rubber connectors 231 are evenly fixed on the outer surface of the synchronous belt 23, and the support plate 31 has connection holes 311 for inserting the rubber connectors 231. By using the above-mentioned rectangular groove 322 and square plate 324, it is convenient for workers to disassemble and assemble the support plate 31 and the synchronous belt 23.

[0027] Furthermore, the sliding assembly 35 includes a pair of springs 351 respectively disposed within the two square holes 321 and located between the slider 34 and the square plate 324; a pair of sliding rods 352 respectively fixed to the side of the two sliders 34 opposite to the hook 36; and a long push plate 353 for pushing the two sliding rods 352. The limiting block 32 has two connecting holes 323 through the bottom of the square holes 321 on the side opposite to the long strip plate 33, and the two sliding rods 352 slide through the two connecting holes 323 respectively. The long push plate 353 is screwed to one end of the two sliding rods 352 that protrudes from the square holes 321 and the connecting holes 323. By using the above-mentioned sliding assembly 35, the operator can effectively control the synchronous sliding of the two sliders 34 outside the square holes 321.

[0028] Furthermore, it also includes a cover plate cleaning mechanism 4, which includes a long strip box 41 fixed to the carding machine frame with its opening facing upward, a long box cover 42 that is movably hinged to the top of the long strip box 41 and can cover the opening of the long strip box 41, multiple dust suction holes 421 opened on the long box cover 42, multiple connecting pipes 43 fixed to the top of the long box cover 42 and respectively surrounding each dust suction hole 421, and multiple suction hoses 44 respectively sleeved on each connecting pipe 43. The long strip box 41 has inlets 411 and outlets 412 on both sides for the synchronous belt 23 and the cover plate body 1 to pass through. A locking component 5 is provided between the long box cover 42 and the long strip box 41 to lock the flipping of the long box cover 42. When the long box cover 42 is closed on the opening of the long strip box 41, the suction holes are facing the upper surface of the cover plate body 1. All suction hoses 44 are connected to the dust collection equipment outside the carding machine. By employing the aforementioned cover cleaning mechanism 4, not only can short fibers and impurities on the cover surface be cleaned and removed, but the elongated box 41 structure can also provide stable support for the guide plate 7 and adjustment assembly 8. Meanwhile, the flip-up elongated box cover 42 can also facilitate workers to open the opening of the elongated box 41 to remove and place the cover inside.

[0029] Furthermore, the locking assembly 5 includes a pair of locking plates 51 fixed to the top of the elongated box body 41 and located at both ends of the elongated box cover 42. The locking plates 51 and the adjacent end wall of the elongated box cover 42 are respectively provided with coaxial pin holes 52 of the same inner diameter. Pins 53 are movably inserted into the pin holes 52 on the locking plates 51 and the pin holes 52 on the end wall of the elongated box cover 42. The elongated box cover 42 has two square notches 422 at both ends, with the locking plates 51 located within the square notches 422 and the pin holes 52 located on the inner wall of the square notches 422. By employing the locking assembly 5, the elongated box cover 42 can be effectively locked in place, thereby ensuring that the dust extraction hole 421 and the suction hose 44 on the elongated box cover 42 can stably perform their dust extraction function.

[0030] Furthermore, a roller 6 is rotatably mounted on one side of the long push plate 353, and a guide plate 7 is slidably mounted inside the long box 41 for the roller 6 to roll into contact with. The guide plate 7 is vertical in the middle and bent at both ends opposite to the direction of the roller 6. An adjustment component 8 is provided on the long box 41 to control the sliding of the guide plate 7 towards or away from the end of the cover plate body 1. By adopting the above-mentioned roller 6, guide plate 7 and other structures, the long push plate 353 can be automatically slid by the movement of the cover plate body 1 through the long box 41, thereby reducing the number of steps required to replace the cover plate body 1 and helping workers to quickly remove the cover plate body 1.

[0031] Furthermore, a pair of horizontally parallel guide rods 71 ​​are fixedly connected to the side of the guide plate 7 facing away from the roller 6, and the guide rods 71 ​​slide through the side wall of the elongated box 41. By using the above-mentioned guide rods 71, the guide plate 7 can be stably supported to slide inside the elongated box 41.

[0032] Furthermore, the adjustment assembly 8 includes a nut 81 fixed to the outer wall of the elongated box 41, an adjusting screw 82 threaded to the nut 81, and a pair of springs 83 respectively sleeved on the two guide rods 71. One end of the adjusting screw 82 passes into the interior of the elongated box 41 and contacts the side of the guide plate 7 opposite to the roller 6. The two ends of the springs 83 are respectively fixed to the guide plate 7 and the inner wall of the elongated box 41, and the elastic force of the springs 83 pulls one side of the guide plate 7 tightly against one end of the adjusting screw 82.

[0033] By using the aforementioned adjustment component 8, when there is no need to replace the cover plate, the adjustment screw 82 can be manually turned to exit the interior of the long box 41. At the same time, under the elastic force of the second spring 83, the guide plate 7 moves away from the limit plate following the movement of the adjustment screw 82 until it stops at a position where the roller 6 cannot roll and contact. At this time, the roller 6 of the long box 41 will push the long push plate 353 to slide because it cannot roll and contact the guide plate 7. Finally, the hook 36 and the square protrusion 37 will maintain the locking and fixing of the cover plate body 1, and stably pass through the long box 41.

[0034] Furthermore, the end of the adjusting screw 82 away from the guide plate 7 is fixedly connected to a flat knob 821 for the user to quickly turn.

[0035] The working principle of this embodiment:

[0036] When it is necessary to replace the cover plate body 1, first manually turn the adjusting screw 82 so that the adjusting screw 82 is screwed into the long box 41. Since one end of the adjusting screw 82 is pressed against the side of the guide plate 7 under the action of the spring 83, the guide plate 7 will move towards the end of the cover plate body 1 due to the movement of the adjusting screw 82, until it stops at the position where the roller 6 can fully roll and contact its side. Then, the timing belt 23 and timing pulley 22 bring the cover plate body 1 to be replaced into the long box 41. Since the roller 6 of the long push plate 353 rolls and contacts the guide plate 7, and the guide plate 7 is vertical in the middle and bent at both ends, the roller 6 will push the long push plate 353 closer to the limit block 32 as it rolls along the guide plate 7. Then, it is connected by the two sliding rods 352. The two sliders 34 of the long push plate 353 will push the two hooks 36 out of the two square holes 321 in sync under the movement of the long push plate 353. Since the hooks 36 previously hooked the square protrusions 37 on the side wall of the long strip plate 33 to fix the cover plate body 1 and the long strip plate 33 to the two support plates 31, after the above movement, the hooks 36 will separate their hook tips from the square protrusions 37, thereby releasing the fixation on the long strip plate 33 and the cover plate body 1. Then, the staff will pull out the pins 53 on the locking plate 51 to release the lock of the flipping of the long box cover 42. Finally, the staff will manually flip the long box cover 42 to the side of the opening of the long box body 41 and put their hands into the long box body 41 to easily take out the old cover plate body 1 and put in the new cover plate body 1.

[0037] The above-described process of replacing the cover plate body 1 is not only simple and convenient to operate, but also safe and reliable because the timing belt 23 and timing pulley 22 do not directly participate in the replacement process of the cover plate body 1. It will not cause wear to the transmission components of the transmission mechanism, thus effectively ensuring the service life of the transmission mechanism.

Claims

1. A flat structure for a carding machine, comprising a plurality of flat bodies (1) parallel and spaced apart and provided with a surface of card clothing and a rack, a belt drive (2) connecting all the flat bodies (1) and driving the movement of all the flat bodies (1), characterized in that, The belt drive mechanism (2) includes four rotating shafts (21) rotating in the carding machine, four pairs of synchronous pulleys (22) respectively sleeved on the four rotating shafts (21), and two synchronous belts (23) respectively sleeved on the two synchronous pulleys (22) on the four rotating shafts (21). All the cover plate bodies (1) are evenly arranged on the outer surface of the synchronous belts (23), and quick-release mechanisms (3) are provided between the two synchronous belts (23) and the cover plate bodies (1). The quick-release mechanism (3) includes a support plate (31) horizontally fixed on the synchronous belts (23), a vertically fixed top limiting block (32) of the support plate (31), a long strip plate (33) fixed to the bottom of the cover plate body (1) and whose end contacts one side of the limiting block (32), and a pair of square holes (321) opened on one side of the limiting block (32) and horizontally located on both sides of the long strip plate (33). A pair of sliders (34) that slide inside two square holes (321) respectively; a sliding assembly (35) that controls the two sliders (34) to slide synchronously relative to the square holes (321); a pair of hooks (36) that connect the two sliders (34) respectively and extend out of the two square holes (321); and a pair of square protrusions (37) that are fixedly set on both sides of the long strip plate (33); the long strip plate (33) rests on the support plates (31) on the two synchronous belts (23), and the limiting blocks (32) on the two support plates (31) respectively position and contact the two ends of the long strip plate (33); the opening of the square hole (321) is located on the side of the limiting block (32) that contacts the long strip plate (33); the long strip plate (33) is located in the middle of the opening of the two square holes (321), and the hooks (36) extending out of the opening of the two square holes (321) can hook the square protrusions (37) on both sides of the long strip plate (33) respectively.

2. A flat for a card according to claim 1, characterized in that: The limiting block (32) has a rectangular groove (322) on its side wall, and two square holes (321) are located at the bottom of the rectangular groove (322). A square plate (324) is fixed in the rectangular groove (322) with screws. The square plate (324) covers the two square holes (321), and a pair of square notches (325) are opened at the bottom for the hooks of the two hooks (36) to pass through.

3. A flat for a card according to claim 1, characterized in that: Multiple rubber connectors (231) are uniformly fixed on the outer surface of the synchronous belt (23), and the support plate (31) is provided with a connection hole (311) for inserting the rubber connectors (231).

4. A flat for a card according to claim 3, characterized in that: The sliding assembly (35) includes a pair of springs (351) respectively placed in two square holes (321) and located between the slider (34) and the square plate (324), a pair of slide rods (352) respectively fixed to the side of the two sliders (34) opposite to the hook (36), and a long push plate (353) for pushing the two slide rods (352). The limiting block (32) has two connecting holes (323) on the side opposite to the long strip plate (33) that penetrate the bottom of the square hole (321), and the two slide rods (352) slide through the two connecting holes (323) respectively. The long push plate (353) is screwed to connect the two slide rods (352) to one end of the square hole (321) and the connecting hole (323).

5. A flat for a card according to claim 4, characterized in that: It also includes a cover plate cleaning mechanism (4), which includes a long box (41) fixed on the carding machine frame with its opening facing upward, a long box cover (42) that is movably hinged to the top of the long box (41) and can cover the opening of the long box (41), a plurality of dust suction holes (421) opened on the long box cover (42), a plurality of connecting pipes (43) fixed to the top of the long box cover (42) and respectively surrounding each dust suction hole (421), and a plurality of suction tubes respectively sleeved on each connecting pipe (43). The long box (41) has an inlet (411) and an outlet (412) on both sides for the synchronous belt (23) and the cover plate body (1) to pass through. A locking component (5) for locking the flipping of the long box cover (42) is provided between the long box cover (42) and the long box body (41). When the long box cover (42) is placed over the opening of the long box body (41), the air suction hole is facing the upper surface of the cover plate body (1). All the air suction hoses (44) are connected to the dust collection equipment outside the carding machine.

6. The cover plate structure for a carding machine according to claim 5, characterized in that: The locking assembly (5) includes a pair of locking plates (51) fixed to the top of the long box body (41) and located at both ends of the long box cover (42). The locking plates (51) and the adjacent end walls of the long box cover (42) are respectively provided with coaxial pin holes (52) with the same inner diameter. The pins (53) are movably inserted into the pin holes (52) on the locking plates (51) and the pin holes (52) on the end walls of the long box cover (42). The long box cover (42) is provided with square notches (422) at both ends, and the locking plates (51) are located inside the square notches (422), and the pin holes (52) are located on the inner wall of the square notches (422).

7. A flat for a card according to claim 5, characterized in that: The long push plate (353) is rotatably provided with a roller (6) on one side. The long box (41) is slidably provided with a guide plate (7) for the roller (6) to roll and contact. The guide plate (7) is vertical in the middle and bent at both ends in opposite directions to the roller (6). The long box (41) is provided with an adjustment component (8) to control the guide plate (7) to slide closer to or away from the end of the cover plate body (1).

8. A flat for a card according to claim 7, characterized in that: The guide plate (7) is fixedly connected to a pair of horizontally parallel guide rods (71) on the side opposite to the roller (6), and the guide rods (71) slide through the side wall of the long box (41).

9. A flat for a card according to claim 8, characterized in that: The adjustment assembly (8) includes a nut (81) fixed to the outer wall of the long box (41), an adjustment screw (82) for threaded connection of the nut (81), and a pair of springs (83) respectively sleeved on the two guide rods (71). One end of the adjustment screw (82) is inserted into the interior of the long box (41) and contacts the side of the guide plate (7) opposite to the roller (6). The two ends of the springs (83) are respectively fixedly connected to the guide plate (7) and the inner wall of the long box (41), and the elastic force of the springs (83) pulls one side of the guide plate (7) to be close to one end of the adjustment screw (82).

10. A flat for a carding machine according to claim 9, characterized in that: The adjusting screw (82) is fixedly connected to a flat knob (821) at the end away from the guide plate (7) for the user to manually turn.

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