Cutting device with automatic knife sharpening function

Abstract

The utility model discloses a cutting device with an automatic knife sharpening function, and belongs to the technical field of gauze pads. The device comprises a conveying structure and a rotary cutting structure, the rotary cutting structure comprises a rotating base, a cutter and a cutter sharpening mechanism, the conveying structure comprises a waste output mechanism, a feeding conveying belt, a front synchronous conveying belt, a rear synchronous conveying belt and a discharging conveying belt, and the front synchronous conveying belt and the rear synchronous conveying belt each comprise a lifting conveying belt and a variable conveying belt. When the cutter rotates to the lowest position along with the rotating seat, the cutter is a cutting position; the front synchronous conveying belt and the rear synchronous conveying belt are located on the adjacent front portion and the adjacent rear portion of a cutting position respectively, the two lifting conveying belts can move up and down, and the ends, close to each other, of the two variable conveying belts can move front and back. The waste output mechanism is located under the position between the front synchronous conveying belt and the rear synchronous conveying belt. When the head end of the gauze is cut, the front end of the variable conveying belt on the rear side moves backwards; when the tail end of the gauze is cut, the rear end of the variable conveying belt on the front side moves forwards.

Description

Technical Field

[0001] The utility model belongs to the technical field of gauze sheets, and particularly relates to a cutting device with an automatic knife sharpening function, which is suitable for transverse cutting of stacked gauze sheets. Background Art

[0002] In the prior art, gauze strips can be stacked up and down, and then cut to obtain stacked gauze pieces. The cutting process can adopt a cutting device.

[0003] For example, the patent with application number CN202023060283.9 discloses a large rotary cutting mechanism, including a rotating seat, a first driving unit driving the rotating seat to rotate with the middle of the rotating seat as the axis, a cutter arranged at the edge of the rotating seat, a second driving unit driving the cutter to rotate, and also including a whetstone unit arranged on the rotating seat and reciprocating along the radial direction of the cutter. The patent sets the mutual cooperation between the first driving unit and the rotating seat, the rotating seat performs a circular motion around the middle, drives the cutter located at the edge to move, and the cutter performs an eccentric circular motion around the middle of the rotating seat. At the same time, the second driving unit drives the cutter to rotate on the rotating seat to achieve paper cutting. The cutter wears the edge of the cutter after multiple cuttings, and the whetstone unit on the rotating seat moves along the radial direction of the cutter. When the edge of the cutter needs to be polished, the whetstone unit fits the edge of the cutter on the rotating seat, and the cutter rotates itself to polish the edge of the cutter, so as to achieve automatic polishing of the cutter on the eccentric cutting mechanism and improve production efficiency.

[0004] The aforementioned structure is used to realize the cutting of packaging cardboard, and this patent is improved on the basis of the aforementioned structure to adapt to the production of gauze sheets. Utility Model Content

[0005] In order to solve the above problems, the embodiment of the utility model provides a cutting device with automatic knife sharpening function. This patent improves the existing equipment to adapt to the production of gauze pieces, and the cutter can be automatically sharpened. The technical solution is as follows:

[0006] The utility model provides a cutting device with an automatic knife sharpening function, which includes a conveying structure and a rotary cutting structure 6, wherein the rotary cutting structure 6 includes a rotating seat 61, a cutter 62 at the edge of the rotating seat 61, and a knife sharpening mechanism 63 on the rotating seat 61, wherein the rotating seat 61 and the cutter 62 rotate around their rotating axes respectively and their rotating axes are arranged in the front-to-back direction; the knife sharpening mechanism 63 is located at the inner edge of the cutter 62, and can move away from the cutter 62; the conveying structure includes a waste output mechanism 5 and a feed conveyor belt 1, a front synchronous conveyor belt 2, a rear synchronous conveyor belt 3 and a discharge conveyor belt 4 arranged in sequence from front to back, wherein the front synchronous conveyor belt 2 and the rear synchronous conveyor belt 3 are both arranged side by side in an upper and lower direction and are respectively located on the upper and lower sides of the gauze The lifting conveyor belt 7 and the variable conveyor belt 8, the rotating seat 61 is always located above the front synchronous conveyor belt 2 and the rear synchronous conveyor belt 3, and the cutter 62 is the cutting position when it rotates to the lowest position with the rotating seat 61; the front synchronous conveyor belt 2 and the rear synchronous conveyor belt 3 are respectively located in the adjacent front and adjacent rear of the cutting position, the two lifting conveyor belts 7 can move up and down, and the ends of the two variable conveyor belts 8 close to each other can move forward and backward; the waste output mechanism 5 is located directly below the front synchronous conveyor belt 2 and the rear synchronous conveyor belt 3; when cutting the head end of the gauze, the front end of the variable conveyor belt 8 of the rear synchronous conveyor belt 3 moves backward; when cutting the end of the gauze, the rear end of the variable conveyor belt 8 of the front synchronous conveyor belt 2 moves forward.

[0007] Specifically, the feed conveyor belt 1, the discharging conveyor belt 4, the lifting conveyor belt 7 and the variable conveyor belt 8 in the embodiment of the utility model are all arranged in the front-to-back direction, and the feed conveyor belt 1, the variable conveyor belt 8 and the discharging conveyor belt 4 are flush, and the adjacent upper portions of the left and right sides of the feed conveyor belt 1 are provided with limit plates 9, and the two limit plates 9 are both arranged in the front-to-back direction and are respectively located on the left and right sides of the gauze.

[0008] Among them, the lifting conveyor belt 7 in the embodiment of the utility model is slidably arranged on a vertically arranged slide rod and is driven up and down by a servo lifting mechanism. The ends of the two variable conveyor belts 8 close to each other are driven forward and backward by the corresponding waste cylinders 84.

[0009] Specifically, the two variable conveyor belts 8 in the embodiment of the utility model are both provided on a frame 81, and the lower ends of the slide bars are fixed on the corresponding sides of the frame 81; the variable conveyor belt 8 includes two driving shafts arranged side by side in the front and back directions, a synchronous conveyor belt 82 arranged in the front and back directions and wound around the two driving shafts, a tensioning roller on the frame 81 for tensioning the synchronous conveyor belt 82, a slide seat 83 on the frame 81 and close to the cutting position, two waste cylinders 84 on the left and right sides of the frame 81, and a driving mechanism on the frame 81; the driving shaft and the tensioning roller are both arranged in the left and right directions, and a A driving shaft is arranged on the frame 81 away from the cutting position and is connected to the driving mechanism in a transmission manner, and another driving shaft is arranged on the slide 83; the slide 83 is located adjacent to the front or adjacent to the rear of the cutting position, and can slide back and forth on the frame 81; two waste cylinders 84 are driven synchronously; the waste cylinders 84 are arranged in the front and back directions, and their cylinder bodies are fixed on the corresponding sides of the frame 81, and their telescopic rods are connected to the corresponding sides of the slide 83; when the waste cylinder 84 is extended, the slide 83 is adjacent to the cutting position; when the waste cylinder 84 is contracted, the slide 83 is away from the cutting position.

[0010] The waste discharging mechanism 5 in the embodiment of the utility model is a conveyor belt arranged along the left and right directions.

[0011] Furthermore, the cutting device in the embodiment of the utility model also includes a processing chamber, the rotary cutting structure 6 is located in the processing chamber, the front synchronous conveyor belt 2 and the rear synchronous conveyor belt 3 pass through the processing chamber forward and backward respectively, the waste output mechanism 5 is located at the bottom of the processing chamber and passes through the processing chamber to the left or right, and the cutter 62 is located on the rear side of the rotating seat 61.

[0012] Furthermore, the rotary cutting structure 6 in the embodiment of the utility model also includes a cutter cleaning mechanism; the cutter cleaning mechanism is a U-shaped structure arranged along the left and right directions, which is arranged on the left or right side of the processing chamber, and an opening is provided on its inner side along the vertical direction for the outer edge of the cutter 62 to pass through, and it is located at the place where the outer edge of the cutter 62 passes; cleaning cloths that can contact the corresponding sides of the cutter 62 are provided on the front and rear sides of the opening.

[0013] Furthermore, the rotary cutting structure 6 in the embodiment of the utility model also includes a dust suction mechanism 64; the dust suction mechanism 64 is arranged along the front-to-back direction, and is located adjacent to the rear of the sharpening mechanism 63, and its front side is open. It is fixed on the rotating seat 61, and is located directly behind the rotating axis of the rotating seat 61. The center of its rear side is rotatably sealed and connected to the negative pressure tube.

[0014] Furthermore, the rotary cutting structure 6 in the embodiment of the utility model also includes a protective cover 65 and a translation cylinder 66. The cutter 62 rotates with the rotating seat 61 to the highest point for sharpening. The protective cover 65 is located at the sharpening point and can move forward and backward. Its front and lower sides are open, and it is located above the dust suction mechanism 64. The translation cylinder 66 is arranged at the rear side of the processing chamber along the front and back direction and the front end of its telescopic rod is fixedly connected to the rear side of the protective cover 65. When the translation cylinder 66 is extended, the protective cover 65 is covered outside the cutter 62. When the translation cylinder 66 is contracted, the protective cover 65 moves backward to the rear of the cutter 62.

[0015] The beneficial effects of the technical solution provided by the embodiment of the utility model are as follows: the embodiment of the utility model provides a cutting device with an automatic knife sharpening function. This patent improves the existing equipment to adapt to the production of gauze pieces, and the cutter can be automatically sharpened. At the same time, this patent can adapt to gauze with different stacking thicknesses. In addition, since gauze is usually used for medical purposes, this patent avoids dust residue caused by knife sharpening through various means. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the cutting device with automatic knife sharpening function provided by the embodiment of the utility model during knife sharpening;

[0017] Figure 2 It is a schematic diagram of the structure of the cutting device with automatic knife sharpening function provided by the embodiment of the utility model during cutting;

[0018] Figure 3 It is a schematic diagram of the structure of the cutting device with automatic knife sharpening function provided by the embodiment of the utility model when cutting the head end of the gauze;

[0019] Figure 4 It is a schematic diagram of the structure of the cutting device with automatic knife sharpening function provided by the embodiment of the utility model when cutting the end of the gauze;

[0020] Figure 5 It is a schematic diagram of the structure of two variable conveyor belts;

[0021] Figure 6 It is a schematic diagram of the structure of a variable conveyor belt;

[0022] Figure 7 yes Figure 6 Schematic diagram of the structure when the waste cylinder is contracted;

[0023] Figure 8 It is a structural schematic diagram of the combination of a tensioning roller and a synchronous conveyor belt.

[0024] In the figure: 1 feeding conveyor belt, 2 front synchronous conveyor belt, 3 rear synchronous conveyor belt, 4 discharging conveyor belt, 5 waste output mechanism, 6 rotary cutting structure, 7 lifting conveyor belt, 8 variable conveyor belt, 9 limit plate;

[0025] 61 rotating seat, 62 cutting knife, 63 sharpening mechanism, 64 dust collecting mechanism, 65 protective cover, 66 translation cylinder;

[0026] 81 frame, 82 synchronous conveyor belt, 83 slide seat, 84 waste cylinder. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] See also Figure 1-8 Embodiment 1 provides a cutting device with automatic knife sharpening function, which includes a processing chamber, a conveying structure and a rotary cutting structure 6. The rotary cutting structure 6 includes a rotating seat 61, a cutter 62 at the edge of the rotating seat 61, a knife sharpening mechanism 63 on the rotating seat 61, a cutter cleaning mechanism in the processing chamber (used to clean the knife sharpening part of the cutter 62, not shown), a dust suction mechanism 64 on the rotating seat 61 (used to absorb dust generated during knife sharpening), a translation cylinder 66 in the processing chamber and a protective cover 65 on the translation cylinder 66 (used to prevent dust generated during knife sharpening from flying around and guiding the dust downward). The rotating seat 61 and the cutter 62 rotate around their respective rotating axes and their rotating axes are arranged in the front-to-back direction. The cutter 62 is specifically a circular blade, and its rotating axis is transmission-connected to the drive shaft passing through the rotating axis of the rotating seat 61, and is located at the rear side of the rotating seat 61. A brake structure is provided on the rotating axis of the rotating seat 61. The sharpening mechanism 63 is located at the inner edge of the cutter 62, and can move away from the cutter 62 (it is driven by a corresponding screw drive structure). The specific description of the rotary cutting structure 6 can be found in the application number CN202023060283.9.

[0030] The conveying structure includes a waste output mechanism 5 and a feed conveyor belt 1, a front synchronous conveyor belt 2, a rear synchronous conveyor belt 3 and a discharge conveyor belt 4 arranged in sequence from front to back. The waste output mechanism 5 is used to output the waste cut from the head end and the end of the gauze. The upper and lower layers of gauze (gauze strips arranged in the front and rear directions, at least 30 layers) are manually placed in the feed conveyor belt 1. The front synchronous conveyor belt 2 and the rear synchronous conveyor belt 3 both include a lifting conveyor belt 7 and a variable conveyor belt 8 arranged side by side and located on the upper and lower sides of the gauze, respectively. The rotating seat 61 is always located above the front synchronous conveyor belt 2 and the rear synchronous conveyor belt 3. The cutter 62 is the cutting position when it rotates to the lowest position with the rotating seat 61. The front synchronous conveyor belt 2 and the rear synchronous conveyor belt 3 are respectively located in the adjacent front and adjacent rear of the cutting position. The two lifting conveyor belts 7 can move up and down to adapt to gauze of different thicknesses, and the ends of the two variable conveyor belts 8 close to each other can move forward and backward. Specifically, the rotary cutting structure 6 is located in the processing room, and the front synchronous conveyor belt 2 and the rear synchronous conveyor belt 3 pass through the processing room forward and backward respectively. The waste output mechanism 5 is located at the bottom of the processing room, and passes through the processing room to the left or right. It is specifically a conveyor belt arranged in the left and right directions, and is located directly below the front synchronous conveyor belt 2 and the rear synchronous conveyor belt 3. Specifically, the feed conveyor belt 1, the discharge conveyor belt 4, the lifting conveyor belt 7 and the variable conveyor belt 8 in the embodiment of the utility model are all arranged in the front-to-back direction and the speeds are coordinated. The feed conveyor belt 1, the variable conveyor belt 8 and the discharge conveyor belt 4 are flush. The adjacent upper portions of the left and right sides of the feed conveyor belt 1 are provided with limit plates 9 (with a height greater than 5 cm). The two limit plates 9 are arranged in the front-to-back direction and are respectively located on the left and right sides of the gauze. Furthermore, the adjacent upper portions of the left and right sides of the variable conveyor belt 8 are also provided with limit plates 9 (with a height less than 5 cm). Among them, the lifting conveyor belt 7 is slidably arranged on a vertically arranged slide rod and is driven by a servo lifting mechanism to move up and down (to adapt to gauze with different laminated thicknesses). The ends of the two variable conveyor belts 8 close to each other are driven by the corresponding waste cylinders 84 to move forward and backward.

[0031] Specifically, see Figure 1-8The two variable conveyor belts 8 in the embodiment of the utility model are both provided on a frame 81 (arranged in the front-to-back direction), and a notch (vertically arranged) is provided on the frame 81 and between the two slide seats 83 for the outer edge of the cutter 62 to pass through. The lower end of the slide bar is fixed on the corresponding side of the frame 81. The variable conveyor belt 8 includes two drive shafts arranged side by side in the front and back direction, a synchronous conveyor belt 82 arranged in the front-to-back direction and wound around the two drive shafts, a tensioning roller on the frame 81 for tensioning the synchronous conveyor belt 82 (a conventional structure, to ensure that the synchronous conveyor belt 82 is always tensioned when one end of the synchronous conveyor belt 82 moves in the front-to-back direction, and there are multiple rollers), a slide seat 83 on the frame 81 and close to the cutting position, two waste cylinders 84 on the left and right sides of the frame 81, and a driving mechanism on the frame 81. The drive shaft and the tensioning roller are both arranged in the left and right direction, one drive shaft is arranged on the frame 81 away from the cutting position and is in transmission connection with the driving mechanism, and the other drive shaft is arranged on the slide seat 83. The slide 83 is located adjacent to the front or adjacent to the rear of the cutting position, and can slide forward and backward on the frame 81. The two waste cylinders 84 are driven synchronously. The waste cylinder 84 is arranged in the front and rear directions, and its cylinder body is fixed on the corresponding side of the frame 81, and its telescopic rod is connected to the corresponding side of the slide 83. When the waste cylinder 84 is extended, the slide 83 is adjacent to the cutting position. When the waste cylinder 84 is retracted, the slide 83 is away from the cutting position. Specifically, for the variable conveyor belt 8 on the front synchronous conveyor belt 2: the driving shaft at the front end of the synchronous conveyor belt 82 is arranged on the frame 81, and the driving shaft at the rear end of the synchronous conveyor belt 82 is arranged on the slide 83, and the slide 83 is located adjacent to the front of the cutting position. When the waste cylinder 84 is retracted, the slide 83 moves forward.

[0032] The cutter cleaning mechanism in the present invention is a U-shaped structure arranged in the left-right direction, which is arranged on the left or right side of the processing chamber, and an opening (specifically a U-shaped opening arranged in the left-right direction) is arranged on the inner side thereof in the vertical direction for the outer edge of the cutter 62 to pass through, and is located where the outer edge of the cutter 62 passes through. Cleaning cloths that can contact the corresponding sides of the cutter 62 are arranged on both the front and rear sides of the opening.

[0033] Among them, see Figure 1-4 The dust suction mechanism 64 in the embodiment of the utility model is arranged along the front-to-back direction, and is located adjacent to and behind the sharpening mechanism 63. The front side thereof is open, and it is fixed on the rotating seat 61. It is located directly behind the rotating shaft of the rotating seat 61. It is specifically a cylinder with a closed rear end (coaxially arranged with the rotating shaft of the rotating seat 61). The center of its rear side is rotationally sealed with a negative pressure pipe (specifically fixed on the processing chamber along the left-right direction, connected to the negative pressure extraction structure, and is a hard pipe), and a photoelectric sensor that can detect the number of rotations of the rotating seat 61 can be arranged on its front side.

[0034] Among them, see Figure 1-4The cutter 62 in the embodiment of the utility model rotates with the rotating seat 61 to the highest point for sharpening. The protective cover 65 is located at the sharpening point, which can move forward and backward, and its front and lower sides are open. It is located above the dust suction mechanism 64 (specifically, adjacent to the upper part). The translation cylinder 66 is arranged at the rear side of the processing chamber along the front and rear direction, and the front end of its telescopic rod is fixedly connected to the rear side of the protective cover 65. When the translation cylinder 66 is extended, the protective cover 65 is covered outside the cutter 62 for sharpening. When the translation cylinder 66 is retracted, the protective cover 65 moves backward to the rear of the cutter 62 for cutting.

[0035] See also Figure 1-8 The working process of the device is described below: when sharpening the knife, the rotating seat 61 stops rotating, the cutter 62 rotates with the rotating seat 61 to the highest point for sharpening, the sharpening mechanism 63 is located at the inner edge of the cutter 62 and works, the protective cover 65 is set outside the cutter 62, the cutter 62 rotates, and the dust suction mechanism 64 draws negative pressure. After the sharpening is completed, the rotating seat 61 rotates for several weeks, the cutter 62 rotates and its outer edge is cleaned by the cutter cleaning mechanism.

[0036] During cutting, the rotating seat 61 rotates, the protective cover 65 moves backward to the rear of the cutter 62, the sharpening mechanism 63 moves away from the cutter 62 to leave the cutter 62 and does not work, the cutter 62 rotates, and the dust suction mechanism 64 does not work. The cutter 62 is at the cutting position when it rotates to the lowest position with the rotating seat 61, and at the same time, the conveying structure conveys the gauze backward. When cutting the head end of the gauze (the head end and the end of the gauze piece are usually not aligned, and 1-5cm needs to be removed to ensure alignment), the front end of the variable conveyor belt 8 of the rear synchronous conveyor belt 3 moves backward, and the cut head end falls downward into the waste output mechanism 5. When cutting the end of the gauze, the rear end of the variable conveyor belt 8 of the front synchronous conveyor belt 2 moves forward, and the cut end falls downward into the waste output mechanism 5. At other positions, the two variable conveyor belts 8 are close to each other.

[0037] Example 2

[0038] See also Figure 2 Embodiment 2 provides a cutting device with an automatic knife sharpening function, and its structure is basically the same as that of Embodiment 1, except that: the knife cleaning mechanism in this embodiment is arranged on the left side of the processing chamber, and the negative pressure pipe is arranged on the right side of the processing chamber along the left-right direction.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cutting device with an automatic knife sharpening function, comprising a conveying structure and a rotary cutting structure (6), wherein the rotary cutting structure (6) comprises a rotating seat (61), a cutter (62) at the edge of the rotating seat (61), and a knife sharpening mechanism (63) on the rotating seat (61), wherein the rotating seat (61) and the cutter (62) respectively rotate around their rotation axes and their rotation axes are arranged in a front-to-back direction; the knife sharpening mechanism (63) is located at the inner edge of the cutter (62) and can move away from the cutter (62); and characterized in that: The conveying structure comprises a waste material output mechanism (5) and a feed conveyor belt (1), a front synchronous conveyor belt (2), a rear synchronous conveyor belt (3) and a discharge conveyor belt (4) which are arranged in sequence from front to rear, the front synchronous conveyor belt (2) and the rear synchronous conveyor belt (3) both comprising a lifting conveyor belt (7) and a variable conveyor belt (8) which are arranged side by side and located at the upper and lower sides of the gauze respectively, the rotating seat (61) is always located above the front synchronous conveyor belt (2) and the rear synchronous conveyor belt (3), and the cutter (62) is at the cutting position when it rotates to the lowest position along with the rotating seat (61); The front synchronous conveyor belt (2) and the rear synchronous conveyor belt (3) are respectively located in front of and behind the cutting position, the two lifting conveyor belts (7) can move up and down, and the ends of the two variable conveyor belts (8) close to each other can move forward and backward; the waste material output mechanism (5) is located directly below the front synchronous conveyor belt (2) and the rear synchronous conveyor belt (3); when the head end of the gauze is cut, the front end of the variable conveyor belt (8) of the rear synchronous conveyor belt (3) moves backward; when the end of the gauze is cut, the rear end of the variable conveyor belt (8) of the front synchronous conveyor belt (2) moves forward.

2. The cutting device with automatic knife sharpening function according to claim 1, characterized in that: The feed conveyor belt (1), the discharge conveyor belt (4), the lifting conveyor belt (7) and the variable conveyor belt (8) are all arranged in the front-to-back direction; the feed conveyor belt (1), the variable conveyor belt (8) and the discharge conveyor belt (4) are flush with each other; and limit plates (9) are provided on the adjacent upper portions of the left and right sides of the feed conveyor belt (1); the two limit plates (9) are both arranged in the front-to-back direction and are respectively located on the left and right sides of the gauze.

3. The cutting device with automatic knife sharpening function according to claim 1, characterized in that: The lifting conveyor belt (7) is slidably arranged on a vertically arranged sliding rod and is driven by a servo lifting mechanism to move up and down. The ends of the two variable conveyor belts (8) close to each other are driven by corresponding waste cylinders (84) to move forward and backward.

4. The cutting device with automatic knife sharpening function according to claim 3, characterized in that: The two variable conveyor belts (8) are both arranged on a frame (81), and the lower ends of the slide bars are fixed on the corresponding sides of the frame (81); the variable conveyor belt (8) comprises two drive shafts arranged side by side in front and back, a synchronous conveyor belt (82) arranged in the front-to-back direction and wound around the two drive shafts, a tensioning roller on the frame (81) for tensioning the synchronous conveyor belt (82), a slide seat (83) on the frame (81) and close to the cutting position, two waste cylinders (84) on the left and right sides of the frame (81), and a driving mechanism on the frame (81); the drive shafts and the tensioning rollers are both arranged in the left and right directions, and one drive shaft is arranged on the frame (81). The frame (81) is far away from the cutting position and is in driving connection with the driving mechanism, and another driving shaft is arranged on the slide (83); the slide (83) is located in the adjacent front or adjacent rear of the cutting position, and can slide forward and backward on the frame (81); the two waste cylinders (84) are driven synchronously; the waste cylinders (84) are arranged in the front and rear directions, and their cylinder bodies are fixed on the corresponding sides of the frame (81), and their telescopic rods are connected to the corresponding sides of the slide (83); when the waste cylinder (84) is extended, the slide (83) is adjacent to the cutting position; when the waste cylinder (84) is retracted, the slide (83) is far away from the cutting position.

5. The cutting device with automatic knife sharpening function according to claim 1, characterized in that: The waste material output mechanism (5) is a conveyor belt arranged in the left and right directions.

6. The cutting device with automatic knife sharpening function according to claim 5, characterized in that: The cutting device also includes a processing chamber, the rotary cutting structure (6) is located in the processing chamber, the front synchronous conveyor belt (2) and the rear synchronous conveyor belt (3) pass through the processing chamber forward and backward respectively, the waste output mechanism (5) is located at the bottom of the processing chamber and passes through the processing chamber to the left or right, and the cutter (62) is located on the rear side of the rotating seat (61).

7. The cutting device with automatic knife sharpening function according to claim 6, characterized in that: The rotary cutting structure (6) also includes a cutter cleaning mechanism; the cutter cleaning mechanism is a U-shaped structure arranged in the left-right direction, which is arranged on the left or right side of the processing chamber, and an opening is arranged on the inner side thereof in the vertical direction for the outer edge of the cutter (62) to pass through, and the opening is located at the place where the outer edge of the cutter (62) passes; cleaning cloths capable of contacting the corresponding sides of the cutter (62) are arranged on both the front and rear sides of the opening.

8. The cutting device with automatic knife sharpening function according to claim 6, characterized in that: The rotary cutting structure (6) also includes a dust suction mechanism (64); the dust suction mechanism (64) is arranged in the front-to-back direction, and is located adjacent to and behind the sharpening mechanism (63). The front side of the dust suction mechanism (64) is open, and the dust suction mechanism (64) is fixed on the rotating seat (61). The dust suction mechanism (64) is located directly behind the rotating shaft of the rotating seat (61), and the center of the rear side is connected to the negative pressure pipe in a rotational seal.

9. The cutting device with automatic knife sharpening function according to claim 8, characterized in that: The rotary cutting structure (6) further comprises a protective cover (65) and a translation cylinder (66). The cutter (62) rotates with the rotating seat (61) to the highest position, which is the sharpening position. The protective cover (65) is located at the sharpening position and can move forward and backward. Its front side and lower side are open and it is located above the dust collecting mechanism (64). The translation cylinder (66) is arranged at the rear side of the processing chamber along the forward and backward direction and the front end of its telescopic rod is fixedly connected to the rear side of the protective cover (65). When the translation cylinder (66) is extended, the protective cover (65) is arranged outside the cutter (62). When the translation cylinder (66) is retracted, the protective cover (65) moves backward to the rear of the cutter (62).

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