Auxiliary feeding device for bristle bed of cutting bed

Abstract

The invention belongs to the technical field of cutting bed accessories, and relates to an auxiliary feeding device for a bristle bed of a cutting bed, which comprises a bed body, a cloth paving table for bearing fabrics is arranged on the front side of the bed body in an adjacent manner, the bristle bed running circularly is arranged in the bed body, a cross beam sliding back and forth is arranged on the bed body in a spanning manner, and the cross beam is arranged on the bed body in a spanning manner. A front cover plate connected with the cloth paving table and the bristle bed is arranged at the front end of the bed body, the cross beam is of a hollow structure, a multi-stage air cylinder is arranged in a cavity of the cross beam and comprises a cylinder body and a multi-stage piston rod, the cylinder body is located in the cavity of the cross beam, the multi-stage piston rod vertically extends downwards, and the tail end of the multi-stage piston rod is connected with a cloth pressing cross rod. The cloth pressing cross rod is located under the cross beam and is parallel to the cross beam. The auxiliary feeding device for the bristle bed of the cutting bed solves the technical problem that the bristle bed cannot effectively drive fabric to advance in the feeding process.

Description

Technical Field

[0001] The invention belongs to the technical field of cutting machine accessories and relates to an auxiliary feeding device for a bristle bed of a cutting machine. Background Art

[0002] With the advancement of science and technology, the cutting table industry has also developed rapidly, and the market demand for the efficiency and automation of equipment has become increasingly higher. In the process of cutting fabrics, the first step of the cutting table is to transfer the multi-layer fabrics that have been laid on the front spreading table to the bristle bed workbench of the cutting table for subsequent automatic cutting operations. However, during the transmission process, the fabric passes through the front cover of the cutting table to the front end of the bristle bed. Since the contact area between the fabric and the front end of the bristle bed is too small at this time, the rotating bristle bed cannot effectively drive the fabric forward. During this period, it is necessary to manually pull and press the fabric to ensure smooth feeding; these auxiliary actions are time-consuming, labor-intensive and inefficient, affecting normal production operations.

[0003] Chinese utility model patent CN204000390U (publication date: 2014-12-10) discloses an automatic cutting bed cloth pressing device, including a cloth pressing device and a pressure control unit. The cloth pressing unit is installed on the cutting head beam on the cutting table, including at least two cylinders and a cloth pressing rod, and the push rod of each cylinder is fixedly connected to the cloth pressing rod; the pressure control unit includes a solenoid valve connected to the cylinder, a controller connected to the solenoid valve, and a pressure relief valve connected between the solenoid valve and the air source of the cylinder. When in use, the pressure limit value of the pressure relief valve is first set according to the height of the cloth; after the cutting is completed, the controller sends a window passing signal to the cutting table, so that the cutting table moves toward the material picking table; the window passing signal triggers the solenoid valve to make the push rod of the cylinder push the cloth pressing rod to press the cloth on the cutting table, so that the cloth and the cutting table move together; after the window passing is completed, the solenoid valve is activated to make the cylinder drive the cloth pressing rod to lift from the cloth, and the cloth pressing process ends. It ensures that the cloth and the cutting table can move synchronously, and realizes the full-automatic window passing of the cloth.

[0004] In order to avoid the cutting head and ensure sufficient movement stroke when pressing the cloth, the cylinder of the above-mentioned cloth pressing device is installed on the rear side of the cutting head beam through a support plate. Due to the position limitation of the cloth pressing rod, the cloth pressing device can only be used for pressing the cloth when passing the window, and cannot be used for pressing the cloth when feeding. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an auxiliary feeding device for a bristle bed of a cutting table, which solves the technical problem that the bristle bed cannot effectively drive the fabric forward during the feeding process.

[0006] In order to solve the above technical problems, the purpose of the present invention is achieved through the following technical solutions:

[0007] A bristle bed auxiliary feeding device for a cutting machine comprises a bed, a cloth-spreading table for carrying fabrics is arranged adjacent to the front side of the bed, a circulating bristle bed is arranged in the bed, a crossbeam that slides back and forth is spanned on the bed, a front cover plate connecting the cloth-spreading table and the bristle bed is arranged at the front end of the bed, the crossbeam is a hollow structure, a multi-stage cylinder is arranged in the cavity of the crossbeam, the multi-stage cylinder comprises a cylinder body and a multi-stage piston rod, the cylinder body is located in the cavity of the crossbeam, the multi-stage piston rod extends vertically downward and is connected to a cloth-pressing cross bar at the end, the cloth-pressing cross bar is located directly below the crossbeam and is arranged parallel to the crossbeam, when feeding, the multi-stage piston rod of the multi-stage cylinder drives the cloth-pressing cross bar to move downward and press the fabric, and the bristle bed and the crossbeam have the same running speed.

[0008] In the above-mentioned auxiliary feeding device for a cutting machine bristle bed, the multi-stage cylinders are provided in plurality and arranged side by side in the cavity of the crossbeam, and the ends of the multi-stage piston rods of the plurality of multi-stage cylinders are simultaneously connected to the cloth pressing cross bar; preferably, the multi-stage cylinders are provided in two and are symmetrically distributed left and right.

[0009] In the above-mentioned auxiliary feeding device for a cutting machine bristle bed, the multi-stage cylinder is a two-stage cylinder, the multi-stage piston rod includes a first-stage piston rod and a second-stage piston rod, and the bottom of the second-stage piston rod is fixedly connected to the cloth pressing cross rod.

[0010] In the above-mentioned auxiliary feeding device for a bristle bed of a cutting machine, the cloth pressing cross bar includes a rigid connecting plate and an elastic cloth pressing block fixed under the rigid connecting plate, the rigid connecting plate is U-shaped and forms a semi-wrapped structure for the elastic cloth pressing block, and the rigid connecting plate is connected to the end of the multi-stage piston rod through a fastener; preferably, a gasket is arranged between the rigid connecting plate and the multi-stage piston rod; preferably, the rigid connecting plate and the elastic cloth pressing plate have the same lateral dimensions, and the bottom plane of the elastic cloth pressing plate exceeds the bottom plane of the rigid connecting plate.

[0011] In the above-mentioned auxiliary feeding device for a bristle bed of a cutting machine, the cloth pressing cross bar is arranged in the center in the transverse direction, and the ratio of its transverse dimension to the transverse dimension of the beam is 1:2-3:4.

[0012] In the above-mentioned auxiliary feeding device for a cutting machine bristle bed, a mounting through hole adapted to the cylinder body is arranged on the bottom plate of the crossbeam, a cylinder mounting plate is fixed to the bottom of the crossbeam at the mounting through hole, the top of the cylinder body abuts against the top of the crossbeam cavity, the bottom of the cylinder body abuts against the top of the cylinder mounting plate and is firmly connected to the cylinder mounting plate; preferably, the air pipe joints on the cylinder body are all located in the crossbeam cavity.

[0013] In the above-mentioned auxiliary feeding device for a bristle bed of a cutting machine, a transverse partition is arranged in the cavity of the crossbeam, and the transverse partition divides the crossbeam cavity into a front cavity and a rear cavity. The multi-stage cylinder is installed in the front cavity, and a motor for driving the crossbeam to slide is also installed at the end of the front cavity. A transverse transmission shaft is arranged in the rear cavity, and the transmission shaft is connected to the motor in a transmission manner.

[0014] In the above-mentioned auxiliary feeding device for a bristle bed of a cutting machine, a first driving plate is provided on one side of the crossbeam, and a second driving plate is provided on the other side; a driving wheel, a first driving wheel and a first transmission wheel are provided on the first driving plate and are meshed with a first synchronous belt at the same time, the driving wheel is mounted on the output shaft of the motor, the first driving wheel is mounted on the first gear, and the first transmission wheel is mounted on one end of the transmission shaft; a second driving wheel, a second transmission wheel and a tensioning wheel are provided on the second driving plate and are meshed with a second synchronous belt at the same time, the second driving wheel is mounted on the second gear, and the second transmission wheel is mounted on the other end of the transmission shaft; the first gear and the second gear are respectively meshed with the first rack and the second rack on the bed for transmission.

[0015] In the above-mentioned auxiliary feeding device for a cutting machine bristle bed, a mounting groove is provided on the first driving plate, a motor seat which can be adjusted forward and backward is slidably provided in the mounting groove, the motor seat is adjustably fixedly connected to the first driving plate, and an adjustment mechanism for driving the motor seat to move is provided between one side of the motor seat and the mounting groove.

[0016] In the above-mentioned auxiliary feeding device for a cutting machine bristle bed, the tensioning wheel is rotatably connected to the tensioning seat, and the tensioning seat is a triangular structure, with the first end hinged to the second driving plate, the second end adjustably fixedly connected to the second driving plate, and the third end being a movable end and in contact with the adjusting mechanism.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention provides an auxiliary feeding device for a bristle bed of a cutting machine. When the fabric moves to the front end of the bristle bed, a multi-stage cylinder installed in the crossbeam is used to drive the cloth-pressing crossbar to press the fabric downward, so as to achieve the purpose of automatic feeding of the fabric when the bristle bed rotates. The present invention adopts a cloth-pressing crossbar located directly below the crossbeam to ensure that the end of the fabric is accurately pressed during feeding; the present invention adopts a multi-stage cylinder to meet the demand for long-stroke pressing within the limited crossbeam space. Therefore, the present invention has the advantages of occupying a small external space, beautiful shape, simple and reliable, easy maintenance, low cost, and no need for other stroke amplification mechanisms.

[0019] 2. The crossbeam of the present invention has the same running speed as the bristle bed. When the bristle bed rotates, the auxiliary cloth pressing cylinder can keep pressing the fabric until the feeding action is completed, thereby ensuring smooth automatic feeding and better feeding accuracy.

[0020] 3. The present invention arranges the cloth pressing mechanism and the transmission mechanism in an integrated unified layout, further sets the crossbeam cavity into a front cavity and a rear cavity, arranges a multi-stage cylinder and a motor in the front cavity, and arranges a transmission shaft in the rear cavity, which not only obtains a simpler layout, but also moves the action points of the multi-stage cylinder and the cloth pressing cross bar forward, thereby increasing the effective cloth pressing distance during auxiliary feeding.

[0021] 4. The present invention further optimizes the transmission structure of the beam movement, and makes the transmission more stable through multiple sets of adjustable structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a stereogram of the present invention;

[0023] Figure 2 is a three-dimensional diagram of the crossbeam of the present invention;

[0024] Figure 3 yes Figure 2 A transverse cross-sectional view of

[0025] Figure 4 yes Figure 3 A magnified image of point A;

[0026] Figure 5 yes Figure 2 A longitudinal cross-sectional view of

[0027] Figure 6 It is a right side view of the crossbeam of the present invention;

[0028] Figure 7 It is a left side view of the crossbeam of the present invention;

[0029] 1. The machine tool of the present invention comprises the following components: 1. bed; 2. fabric; 3. cloth-laying table; 4. bristle bed; 5. crossbeam; 6. front cover plate; 7. multi-stage cylinder; 8. cylinder body; 9. multi-stage piston rod; 10. cloth-pressing cross bar; 11. primary piston rod; 12. secondary piston rod; 13. rigid connecting plate; 14. elastic cloth-pressing block; 15. cylinder mounting plate; 16. transverse partition plate; 17. front cavity; 18. rear cavity; 19. motor; 20. transmission shaft; 21. first drive plate; 22. second drive plate; 23. driving wheel; 24. first drive wheel; 25. first transmission wheel; 26. first synchronous belt; 27. first gear; 28. second drive wheel; 29. ​​second transmission wheel; 30. tensioning wheel; 31. second synchronous belt; 32. second gear; 33. motor seat; 34. adjustment mechanism; 35. tensioning seat. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to specific embodiments of the present invention. Figure 1-7 :

[0031] A bristle bed auxiliary feeding device for a cutting machine comprises a bed 1, a cloth spreading table 3 for carrying a fabric 2 is arranged adjacent to the front side of the bed 1, a bristle bed 4 for circulating is arranged in the bed 1, a crossbeam 5 for sliding back and forth is arranged on the bed 1, a front cover plate 6 connecting the cloth spreading table 3 and the bristle bed 4 is arranged at the front end of the bed 1, the crossbeam 5 is a hollow structure, a multi-stage cylinder 7 is arranged in the cavity of the crossbeam 5, the multi-stage cylinder 7 comprises a cylinder body 8 and a multi-stage piston rod 9, the cylinder body 8 is located in the cavity of the crossbeam 5, the multi-stage piston rod 9 extends vertically downward and is connected to a cloth pressing cross bar 10 at the end, the cloth pressing cross bar 10 is located directly below the crossbeam 5 and is arranged parallel to the crossbeam 5, when feeding, the multi-stage piston rod 9 of the multi-stage cylinder 7 drives the cloth pressing cross bar 10 to move downward and press the fabric 2, and the bristle bed 4 and the crossbeam 5 have the same running speed.

[0032] Compare with Figure 1 and attached Figure 2 The working process of this embodiment is: placing the fabric 2 on the spreading table 3 and then transmitting it backwards, the fabric 2 passes over the front cover plate 6 and reaches the feeding position at the front end of the bristle bed 4. At this time, due to the small contact area between the fabric 2 and the bristle bed 4, the bristle bed 4 cannot drive the fabric 2 forward; moving the crossbeam 5 to the feeding position, the cloth pressing crossbar 10 is located directly above the end of the fabric 2, starting the multi-stage cylinder 7, the piston rod of the multi-stage cylinder 7 extends downward and drives the cloth pressing crossbar 10 to move downward to press the fabric 2. After pressing the fabric 2, the friction between the fabric 2 and the bristle bed 4 increases, and then starting the driving devices of the crossbeam 5 and the bristle bed 4 at the same time, the crossbeam 5 and the bristle bed 4 move synchronously and pull the fabric 2 forward until the feeding action is completed.

[0033] In this example, the Figure 3 The multi-stage cylinders 7 are provided in plurality and arranged side by side in the cavity of the crossbeam 5, and the ends of the multi-stage piston rods 9 of the plurality of multi-stage cylinders 7 are simultaneously connected to the cloth pressing cross bar 10; the multi-stage cylinders 7 are provided in two and are symmetrically distributed on the left and right. By simultaneously driving the cloth pressing cross bar 10 to move downward by two multi-stage cylinders 7, the movement of the cloth pressing cross bar 10 can be made more stable and the pressure more uniform.

[0034] In this example, the Figure 4 The multi-stage cylinder 7 is a two-stage cylinder, and the multi-stage piston rod 9 includes a first-stage piston rod 11 and a second-stage piston rod 12. The bottom of the second-stage piston rod 12 is fixedly connected to the cloth pressing cross rod 10; the total downward movement stroke of the first-stage piston rod 11 and the second-stage piston rod 12 is greater than the axial size of the inner cavity of the second-stage cylinder.

[0035] Further, in this embodiment, the Figure 4 The specific structure of the cloth pressing cross bar 10 is: the cloth pressing cross bar 10 includes a rigid connecting plate 13 and an elastic cloth pressing block 14 fixed under the rigid connecting plate 13, the rigid connecting plate 13 is U-shaped and forms a semi-wrapped structure for the elastic cloth pressing block 14, and the rigid connecting plate 13 is connected to the end of the multi-stage piston rod 9 through a fastener; preferably, a gasket is arranged between the rigid connecting plate 13 and the multi-stage piston rod 9; preferably, the rigid connecting plate 13 and the elastic cloth pressing plate have the same lateral dimensions, and the bottom plane of the elastic cloth pressing plate exceeds the bottom plane of the rigid connecting plate 13. The cloth pressing cross bar 10 with the above structure can better press the fabric 2 while avoiding affecting the fabric 2.

[0036] In this example, the Figure 4 The installation structure of the multi-stage cylinder 7 is: a mounting through hole adapted to the cylinder body 8 is provided on the bottom plate of the cross beam 5, a cylinder mounting plate 15 is fixed to the bottom of the cross beam 5 at the mounting through hole, the top of the cylinder body 8 abuts against the top of the cavity of the cross beam 5, and the bottom of the cylinder body 8 abuts against the top of the cylinder mounting plate 15 and is tightly connected to the cylinder mounting plate 15; preferably, the air pipe joints on the cylinder body 8 are all located in the cavity of the cross beam 5; the above-mentioned installation structure can make maximum use of the internal space of the cross beam 5 and make the layout more concise.

[0037] Compare with Figure 5 This embodiment further utilizes the internal space of the crossbeam 5 and uniformly arranges the cloth pressing mechanism and the transmission mechanism to make it more concise: a transverse partition 16 is arranged in the cavity of the crossbeam 5, and the transverse partition 16 divides the cavity of the crossbeam 5 into a front cavity 17 and a rear cavity 18. The multi-stage cylinder 7 is installed in the front cavity 17, and a motor 19 for driving the crossbeam 5 to slide is also installed at the end of the front cavity 17. A transverse transmission shaft 20 is arranged in the rear cavity 18, and the transmission shaft 20 is connected to the motor 19 in transmission.

[0038] Furthermore, the specific transmission structure of this embodiment is: a first driving plate 21 is provided on one side of the crossbeam 5, and a second driving plate 22 is provided on the other side; a driving wheel 23, a first driving wheel 24 and a first transmission wheel 25 are provided on the first driving plate 21 and are meshed with a first synchronous belt 26 at the same time, the driving wheel 23 is sleeved on the output shaft of the motor, the first driving wheel 24 is sleeved on the first gear 27, and the first transmission wheel 25 is sleeved on one end of the transmission shaft 20; a second driving wheel 28, a second transmission wheel 29 and a tensioning wheel 30 are provided on the second driving plate 22 and are meshed with a second synchronous belt 31 at the same time, the second driving wheel 28 is sleeved on the second gear 32, and the second transmission wheel 29 is sleeved on the other end of the transmission shaft 20; the first gear 27 and the second gear 32 are respectively meshed with the first rack and the second rack on the bed 1 for transmission.

[0039] Compare with Figure 6 , this embodiment further provides an adjustment structure of the first drive assembly to enable better tensioning transmission: a mounting slot is provided on the first drive plate 21, a motor seat 33 which can be adjusted forward and backward is slidably provided in the mounting slot, the motor seat 33 is adjustably fixedly connected to the first drive plate 21, and an adjustment mechanism 34 for driving the motor seat 33 to move is provided between one side of the motor seat 33 and the mounting slot; specifically, the motor seat 33 is adjustably connected to the first drive plate 21 through a strip hole and a fastener, the adjustment mechanism 34 is an adjustment bolt, the rod of the adjustment bolt is threadedly connected to the motor seat 33 and the adjustment nut, and the head of the adjustment bolt is in conflict with the mounting slot, and the position of the motor seat 33 can be changed by rotating the adjustment nut, thereby changing the position of the driving wheel 23 to adjust the tension of the first synchronous belt 26.

[0040] Compare with Figure 7 The present embodiment further provides an adjustment structure of the second drive assembly to enable better tensioning transmission: the tensioning wheel 30 is rotatably connected to the tensioning seat 35, and the tensioning seat 35 is a triangular structure, with a first end hinged to the second drive plate 22, a second end adjustably fixedly connected to the second drive plate 22, and a third end being a movable end and in conflict with the adjustment mechanism 34; specifically, the second end is provided with an arc-shaped adjustment groove and is adjustably connected to the second drive plate 22 through a fastener, and the adjustment mechanism 34 is an adjustment bolt, and the adjustment bolt is screwed to the adjustment seat on the second drive plate 22. By rotating the adjustment bolt, the position of the tensioning seat 35 can be changed, thereby changing the position of the tensioning wheel 30 to adjust the tensioning force of the second synchronous belt 31.

[0041] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary feeding device for a bristle bed of a cutting machine, comprising a bed (1), a cloth spreading table (3) for carrying a fabric (2) being arranged adjacent to the front side of the bed (1), a circulating bristle bed (4) being arranged inside the bed (1), a cross beam (5) for sliding forward and backward being arranged across the bed (1), a front cover plate (6) for connecting the cloth spreading table (3) and the bristle bed (4) being arranged at the front end of the bed (1), characterized in that: The crossbeam (5) is a hollow structure. A multi-stage cylinder (7) is arranged in the cavity of the crossbeam (5). The multi-stage cylinder (7) comprises a cylinder body (8) and a multi-stage piston rod (9). The cylinder body (8) is located in the cavity of the crossbeam (5). The multi-stage piston rod (9) extends vertically downward and is connected to a cloth-pressing crossbar (10) at the end. The cloth-pressing crossbar (10) is located directly below the crossbeam (5) and is arranged parallel to the crossbeam (5). When feeding, the multi-stage piston rod (9) of the multi-stage cylinder (7) drives the cloth-pressing crossbar (10) to move downward and press the fabric (2). The bristle bed (9) has the same running speed as the crossbeam (5).

2. The auxiliary feeding device for a bristle bed of a cutting machine according to claim 1, characterized in that: The multi-stage cylinders (7) are provided in plurality and arranged side by side in the cavity of the cross beam (5), and the ends of the multi-stage piston rods (9) of the plurality of multi-stage cylinders (7) are simultaneously connected to the cloth pressing cross rod (10).

3. The auxiliary feeding device for a bristle bed of a cutting machine according to claim 1, characterized in that: The multi-stage cylinder (7) is a two-stage cylinder, the multi-stage piston rod (9) comprises a first-stage piston rod (11) and a second-stage piston rod (12), and the bottom of the second-stage piston rod (12) is fixedly connected to the cloth pressing cross rod (10).

4. The auxiliary feeding device for a bristle bed of a cutting machine according to claim 1, characterized in that: The cloth-pressing cross bar (10) comprises a rigid connecting plate (13) and an elastic cloth-pressing block (14) fixed below the rigid connecting plate (13); the rigid connecting plate (13) is U-shaped and forms a semi-wrapped structure for the elastic cloth-pressing block (14); the rigid connecting plate (13) is connected to the end of the multi-stage piston rod (9) via a fastener.

5. The auxiliary feeding device for a bristle bed of a cutting machine according to claim 1, characterized in that: A mounting through hole adapted to the cylinder body (8) is provided on the bottom plate of the cross beam (5), a cylinder mounting plate (15) is fixed to the bottom of the cross beam (5) at the mounting through hole, the top of the cylinder body (8) abuts against the top of the cavity of the cross beam (5), and the bottom of the cylinder body (8) abuts against the top of the cylinder mounting plate (15) and is firmly connected to the cylinder mounting plate (15).

6. The auxiliary feeding device for a bristle bed of a cutting machine according to claim 1, characterized in that: A transverse partition (16) is arranged in the cavity of the cross beam (5), and the transverse partition (16) divides the cavity of the cross beam (5) into a front cavity (17) and a rear cavity (18). The multi-stage cylinder (7) is installed in the front cavity (17), and a motor (19) for driving the cross beam (5) to slide is also installed at the end of the front cavity (17). A transverse transmission shaft (20) is arranged in the rear cavity (18), and the transmission shaft (20) is connected to the motor (19) in a transmission manner.

7. The auxiliary feeding device for a bristle bed of a cutting machine according to claim 6, characterized in that: A first driving plate (21) is provided on one side of the crossbeam (5), and a second driving plate (22) is provided on the other side; a driving wheel (23), a first driving wheel (24) and a first transmission wheel (25) are provided on the first driving plate (21) and mesh with a first synchronous belt (26) at the same time; the driving wheel (23) is sleeved on the output shaft of the motor (19); the first driving wheel (24) is sleeved on the first gear (27); the first transmission wheel (25) is sleeved on one end of the transmission shaft (20); a second driving wheel (28), a second transmission wheel (29) and a tensioning wheel (30) are provided on the second driving plate (22) and mesh with a second synchronous belt (31) at the same time; the second driving wheel (28) is sleeved on the second gear (32); the second transmission wheel (29) is sleeved on the other end of the transmission shaft (20); the first gear (27) and the second gear (32) are respectively meshed with a first rack and a second rack on the bed (1) for transmission.

8. The auxiliary feeding device for a bristle bed of a cutting machine according to claim 7, characterized in that: The first drive plate (21) is provided with a mounting slot, a motor seat (33) that can be adjusted forward and backward is slidably arranged in the mounting slot, the motor seat (33) is adjustably fixedly connected to the first drive plate (21), and an adjustment mechanism (34) for driving the motor seat (33) to move is arranged between one side of the motor seat (33) and the mounting slot.

9. The auxiliary feeding device for a bristle bed of a cutting machine according to claim 7, characterized in that: The tensioning wheel (30) is rotatably connected to the tensioning seat (35). The tensioning seat (35) is a triangular structure, with a first end hinged to the second driving plate (22), a second end adjustably fixedly connected to the second driving plate (22), and a third end being a movable end and in contact with the adjusting mechanism (34).

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