Paper cutting equipment

Abstract

The utility model relates to the technical field of paper cutting, and discloses paper cutting equipment which comprises a bottom plate, a plurality of supporting legs are fixedly connected to the middle of the top side of the bottom plate, reinforcing plates are fixedly connected to the close sides of every two supporting legs, a protective box is fixedly connected to the rear side of one reinforcing plate, and the protective box is fixedly connected to the rear side of the other reinforcing plate. The rear side of the inner wall of the protection box is fixedly connected with a driving assembly used for driving follow-up parts, the rear end of the driving assembly is fixedly connected with a driving wheel, the driving wheel is sleeved with a belt, and the top sides of the two supporting legs are fixedly connected with a strip-shaped box; the rear end of the strip-shaped box is rotationally connected with a rotating assembly used for transmitting power. According to the utility model, the connecting plate is clamped by applying a force in a reverse direction to the trapezoidal plate, so that the connecting plate can be quickly mounted and dismounted without using a special tool, and the replacement efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of paper cutting, in particular to a paper cutting device. Background Art

[0002] Kraft paper is a strong, durable and heavy paper, usually made from softwood fibers (such as pine and fir), with long fibers that give the paper high strength and wear resistance. Kraft paper is widely used to make paper bags, packaging materials, envelopes, notebook covers, etc., and is also very popular in art and handicrafts. A paper cutting device (kraft paper) is a mechanical device specially designed to cut kraft paper accurately and efficiently. This equipment is usually capable of handling the unique thickness and strength of kraft paper, ensuring the accuracy of the cutting process and the maintenance of paper quality.

[0003] In the prior art, when replacing the cutting head of most paper cutting devices, the staff needs to identify and select a tool that matches the bolt size on the cutting head, and then usually needs to turn the bolt multiple times to install or remove it, which reduces the efficiency of replacement and maintenance. The steps of identifying the tool, matching the size, and turning the bolt multiple times all take a lot of time and effort, delaying the entire replacement process. Therefore, a paper cutting device is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a paper cutting device, which aims to improve the problem that when replacing the cutting head of most paper cutting devices in the prior art, special tools need to be used to replace the cutting head, which is complicated, time-consuming and labor-intensive to operate.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The cam is provided with a plurality of support legs, each of which is provided with a reinforcing plate on a side adjacent to the support legs, and a rear side of one of the reinforcing plates is fixedly connected to a protective box, a rear side of an inner wall of the protective box is fixedly connected to a driving assembly for driving subsequent components, a belt is provided on an outer sleeve of the driving assembly, wherein the top sides of the two support legs are fixedly connected to a strip box, the rear end of the strip box is rotatably connected to a rotating assembly for transmitting power, the rear side of the rotating assembly is fixedly connected to a driven wheel, the front end of the rotating assembly is slidably connected to a vertical plate, the bottom side of the vertical plate is fixedly connected to a connecting plate, the bottom end of the connecting plate is slidably connected to a cutting knife, the front and rear ends of the cutting knife are slidably connected to a pressing assembly for pressing subsequent components, the bottom end of the pressing assembly is slidably connected to a trapezoidal plate, and the far sides of the two trapezoidal plates are fixedly connected to a spring;

[0007] As a further description of the above technical solution: the core structure of the paper cutting device is composed of a bottom plate, supporting legs, and a reinforcement plate, wherein the reinforcement plate is connected to a protective box at the rear, and a motor-driven component and a driving wheel are installed inside. The belt transmits power to the rotating component and the driven wheel in the upper bar box, and the front end is connected to the cutting knife through the vertical plate to realize the cutting action.

[0008] The top ends of the two support legs are rotatably connected to the limit rods, the left ends of the top sides of the two support legs are fixedly connected to the two opening plates, and the top ends of the two opening plates are rotatably connected to the cloth placing rollers. The inner sides of the support legs are provided with a right-angle opening, and the right ends of the top sides of the two support legs are fixedly connected to the multiple strip plates, the top sides of the strip plates are fixedly connected to the support platform, the bottom side of the support platform is fixedly connected to the cylinder, the driving end of the cylinder is fixedly connected to the square plate, the four sides of the square plate are rotatably connected to the rotating rod, the outside of the rotating rod is fixedly connected to the rotating plate, the top end of the rotating plate is rotatably connected to the sliding block, the far sides of the sliding block are fixedly connected to the side plates, the top side of the sliding block is fixedly connected to the clamping plate, and the inner sides of the support platform are provided with two strip openings.

[0009] As a further description of the above technical solution: the additional components of the equipment include a control box, a limit rod, a cloth placing rod, etc., which are respectively installed at the front and top of the equipment. A support table, a cylinder, a clamping plate and other components are set on the right side of the bottom plate to fix and support the material to be cut.

[0010] The driving assembly includes a motor, the rear side of the motor is fixedly connected to the rear side of the inner wall of the protective box, the driving end of the motor is fixedly connected to a rotating shaft, the front end of the rotating shaft is fixedly connected to a driven roller, and the left ends of the two reinforcement plates are rotatably connected to active rollers;

[0011] As a further description of the above technical solution: the driving component is centered on the motor, and its driving end is connected to the rotating shaft. A driven roller is installed at the front end of the rotating shaft, and active rollers are rotatably connected to the two reinforcement plates, which constitute the power source for driving the kraft paper feeding of the equipment, and the feeding is carried out in the form of friction.

[0012] The rear end of the rotating shaft is fixedly connected to the inner wall of the driving wheel, and a processing plate is fixedly connected to the adjacent side of the plurality of supporting legs;

[0013] As a further description of the above technical solution: by supporting the processing plate, the support platform for kraft paper cutting is raised, and the driving wheel is driven to rotate by the rotating shaft to transmit the force to subsequent components.

[0014] The rotating assembly comprises a driven shaft, the outer portion of the driven shaft is rotatably connected to the rear end inner wall of the bar box, a fixed plate is fixedly connected to the rear end of the inner wall of the bar box, a circular ring is rotatably connected to the inner wall of the fixed plate, a circular plate is fixedly connected to the front side of the driven shaft, a rotating column is fixedly connected to the front side of the circular plate, the outer portion of the driven shaft is fixedly connected to the inner wall of the circular ring, and a driven wheel is fixedly connected to the rear side of the driven shaft;

[0015] As a further description of the above technical solution: the driven shaft is fixed to the circular ring and confined inside the fixed plate, so that the driven wheel can stably transmit the force to the driven shaft for rotation.

[0016] The outer portion of the driven wheel is sleeved inside the belt, the outer portion of the rotating column is slidably connected to the inner wall of the vertical plate, and the outer portion of the connecting plate is slidably connected to the inner wall of the bottom end of the bar box;

[0017] As a further description of the above technical solution: through friction, the belt can drive the driven wheel to rotate when it rotates, and the rotation of the sliding column drives the vertical plate to slide, and the restriction of the bar box allows the connecting plate to slide vertically stably.

[0018] The pressing assembly comprises a button, the outer portions of the two buttons are respectively slidably connected to the inner walls at the front and rear ends of the cutting knife, and the bottom side of the button is fixedly connected to a connecting column;

[0019] As a further description of the above technical solution: the button is convenient for the staff to press and push the connecting column to slide together.

[0020] The outside of the connecting column is slidably connected to the inner wall of the trapezoidal plate, and inclined openings are provided on the left and right sides of the trapezoidal plate. The adjacent ends of the two trapezoidal plates are slidably connected to the front and rear ends of the bottom of the connecting plate, and the distant ends of the two springs are fixedly connected to the inner walls of the front and rear ends of the cutting knife.

[0021] As a further description of the above technical solution: through the inclined opening opened by the trapezoidal plate, an inclined structure is formed inside the trapezoidal plate, so that the trapezoidal plate slides after being subjected to force to squeeze the spring, so that the spring gives the trapezoidal plate a force in the opposite direction to reset it.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, the connecting plate is driven to slide, and then the trapezoidal plate is driven to slide, and then the cutting knife is driven to make a reciprocating motion up and down to cut the kraft paper, thereby realizing the integration of kraft paper transportation and cutting, thereby reducing the production cost of kraft paper cutting; at the same time, the two trapezoidal plates slide to the far side and squeeze the spring, so that the spring can store elastic potential energy, and then give the trapezoidal plate a force in the opposite direction to clamp the connecting plate, so that the connecting plate can be quickly installed and disassembled without using special tools for installation and disassembly, thereby improving the efficiency of replacement.

[0024] 2. In the utility model, the rotating rod is driven to slide, and the sliding of the rotating rod drives the rotating plate to slide. During the rotation process, the multiple rotating plates will respectively drive a sliding block to slide, thereby driving the clamping plate to slide. At this time, the multiple clamping plates will move closer to one side, so that multiple layers of kraft paper can be gathered as a whole, thereby facilitating subsequent transportation and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional schematic diagram of a paper cutting device proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of a driving wheel of a paper cutting device proposed by the utility model;

[0027] Figure 3 This is a structural schematic diagram of a connecting plate of a paper cutting device proposed by the utility model;

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 The utility model is a schematic diagram of the structure of a rotating plate of a paper cutting device.

[0030] Legend:

[0031] 1. Bottom plate; 2. Support legs; 3. Processing plate; 4. Protective box; 5. Motor; 6. Rotating shaft; 7. Driven roller; 8. Driving wheel; 9. Belt; 10. Bar box; 11. Driven shaft; 12. Driven wheel; 13. Round plate; 14. Rotating column; 15. Vertical plate; 16. Connecting plate; 17. Cutting knife; 18. Button; 19. Connecting column; 20. Trapezoidal plate; 21. Inclined opening; 22. Spring ; 23. Side block; 24. Fixed plate; 25. Ring; 26. Control box; 27. Active roller; 28. Limiting rod; 29. ​​Opening plate; 30. Cloth placing rod; 31. Right-angle opening; 32. Strip plate; 33. Support table; 34. Cylinder; 35. Square plate; 36. Rotating rod; 37. Rotating plate; 38. Sliding block; 39. Side plate; 40. Clamp; 41. Strip opening; 42. Reinforcement plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figures 1 to 3 The utility model provides an embodiment: a paper cutting device, including a bottom plate 1, which provides stable support for the device as a whole. A plurality of supporting legs 2 are fixedly connected to the middle of the top side of the bottom plate 1. The supporting legs 2 not only provide stable support for the device, but also ensure the firm installation of the upper parts thereof. A processing plate 3 is fixedly connected to the adjacent side of the plurality of supporting legs 2 for placing kraft paper. A reinforcing plate 42 is fixedly connected to the adjacent side of every two supporting legs 2 for increasing the stability of the device. A protective box 4 is fixedly connected to the rear side of one of the reinforcing plates 42. For protecting the internal structure, the rear side of the inner wall of the protection box 4 is fixedly connected with a driving assembly for driving subsequent components, and the driving assembly includes a motor 5 and a driving source. The rear side of the motor 5 is fixedly connected to the rear side of the inner wall of the protection box 4, so that the motor 5 can operate stably. The driving end of the motor 5 is fixedly connected with a rotating shaft 6, which is used to transmit the rotating force of the driving end of the motor 5 to the subsequent components. The front end of the rotating shaft 6 is fixedly connected with a driven roller 7, so that the driven roller 7 can rotate and drive the kraft paper to be loaded and transported through friction, and is used to generate friction with the kraft paper;

[0034] The rear end of the driving assembly is fixedly connected with a driving wheel 8, and the rear end of the rotating shaft 6 is fixedly connected to the inner wall of the driving wheel 8, which is used to transmit the force of the rotating shaft 6 to the subsequent components. The outer sleeve of the driving wheel 8 is provided with a belt 9, which generates friction with the driving wheel 8 and transmits the subsequent components. The top sides of the two supporting legs 2 are fixedly connected with a bar box 10, and the rear end of the bar box 10 is rotatably connected with a rotating assembly for transmitting power. The rear side of the rotating assembly is fixedly connected with a driven wheel 12, so that the driven wheel 12 can transmit the rotating force. The rotating assembly includes a driven shaft 11, and the rear side of the driven shaft 11 is fixedly connected with a driven wheel 12. The outer sleeve of the driven wheel 12 is arranged inside the belt 9, and the belt 9 transmits the force to the driven wheel 12 to drive the driven shaft 11 to rotate;

[0035] The outer rotation of the driven shaft 11 is connected to the inner wall of the rear end of the bar box 10, so that the driven shaft 11 can rotate stably. The front side of the driven shaft 11 is fixedly connected to a circular plate 13 for receiving the force of the driven shaft 11 rotating. The front side of the circular plate 13 is fixedly connected to a rotating column 14, thereby driving the rotating column 14 to rotate. The front end of the rotating component is slidably connected to a vertical plate 15, and the bottom side of the vertical plate 15 is fixedly connected to a connecting plate 16 to provide support for the connecting plate 16. The outer side of the rotating column 14 is slidably connected to the inner wall of the vertical plate 15, and the rotating column 14 makes a circular motion around the driven shaft 11 as the center, thereby pushing the vertical plate 15 to reciprocate up and down. The outer side of the connecting plate 16 is slidably connected to the inner wall of the bottom end of the bar box 10, so that the connecting plate 16 can slide vertically. The bottom end of the connecting plate 16 is slidably connected to a cutting knife 17 for cutting kraft paper.

[0036] Reference Figures 2 to 4 The front and rear ends of the cutting knife 17 are slidably connected with a pressing assembly for pressing subsequent components. The pressing assembly includes a button 18, which is convenient for people to press and push the cutting knife 17 to slide. The outer parts of the two buttons 18 are slidably connected to the inner walls of the front and rear ends of the cutting knife 17, respectively, so that the buttons 18 can slide vertically. The bottom side of the button 18 is fixedly connected with a connecting column 19 for resisting the subsequent components. The bottom end of the pressing assembly is slidably connected with a trapezoidal plate 20, and the outer part of the connecting column 19 is slidably connected to the inner wall of the trapezoidal plate 20. , so that the trapezoidal plate 20 can limit the connecting plate 16, the left and right sides of the trapezoidal plate 20 are provided with inclined openings 21, so that the inside of the trapezoidal plate 20 forms an inclined structure, the close ends of the two trapezoidal plates 20 are respectively slidably connected to the front and rear ends of the bottom of the connecting plate 16, and the far sides of the two trapezoidal plates 20 are fixedly connected with springs 22, and the far ends of the two springs 22 are respectively fixedly connected to the inner walls of the front and rear ends of the cutting knife 17, and the two ends of the spring 22 are fixed so that the spring 22 can be evenly stressed;

[0037] The far side of the cutting knife 17 is fixedly connected with a side block 23 for limiting the vertical displacement of the cutting knife 17. The rear end of the inner wall of the strip box 10 is fixedly connected with a fixing plate 24 for limiting the subsequent components. The inner wall of the fixing plate 24 is rotatably connected with a ring 25 so that the ring 25 can rotate stably. The outside of the driven shaft 11 is fixedly connected to the inner wall of the ring 25 to prevent the driven shaft 11 from slipping. A control box 26 is installed on the front side of another reinforcing plate 42. The left ends of the two reinforcing plates 42 are rotatably connected with active rollers 27 for limiting kraft paper. The top ends of the other two supporting legs 2 are rotatably connected with limiting rods 28. The left end of the top side of the bottom plate 1 is fixedly connected with two opening plates 29 for providing supporting force. The top ends of the two opening plates 29 are rotatably connected with cloth placing rods 30 so that the cloth placing rods 30 can rotate to place kraft paper. A right-angle opening 31 is provided inside the supporting leg 2 to facilitate the movement of the side block 23.

[0038] Reference Figure 1 and Figure 5 The top right end of the bottom plate 1 is fixedly connected with a plurality of strip plates 32, and the top side of the strip plates 32 is fixedly connected with a support platform 33 to provide support force for the support platform 33. The bottom side of the support platform 33 is fixedly connected with a cylinder 34, a driving source, and the driving end of the cylinder 34 is fixedly connected with a square plate 35 for transmitting the thrust of the cylinder 34. The four sides of the square plate 35 are rotatably connected with a rotating rod 36 for limiting the rotation of subsequent components. The outside of the rotating rod 36 is fixedly connected with a rotating plate 37 so that the rotating plate 37 can rotate stably. The top of the rotating plate 37 is rotatably connected with a sliding block 38 for driving the sliding block 38 to slide. The far side of the sliding block 38 is fixedly connected with a side plate 39 to prevent the sliding block 38 from sliding off. The top side of the sliding block 38 is fixedly connected with a clamping plate 40 for limiting the cut kraft paper. Two strip openings 41 are provided around the inside of the support platform 33.

[0039] Working principle: After we roll the kraft paper on the cloth-releasing roller 30, we pull out one end of the kraft paper and pass it through the limit rod 28, the active roller 27 and the driven roller 7 in an interlaced manner, and then drive the rotating shaft 6 to rotate through the driving motor 5, thereby driving the driven roller 7 to rotate. At this time, the kraft paper in contact with the driven roller 7 will generate friction to be transported forward and pass under the cutting knife 17. At the same time, the rotating shaft 6 will also drive the active wheel 8 to rotate, thereby driving the belt 9 to rotate, and then driving the driven shaft 11 to rotate. The circular plate 13 is driven to rotate through the driven shaft 11, thereby driving the rotating column 14 to make a circular motion around the driven shaft 11 as the center of the circle. At this time, the rotating column 14 will drive the rotating column 14 to make up and down reciprocating motion together, thereby driving the connecting plate 16 to slide, and then driving the trapezoidal The plate 20 slides, and then drives the cutting knife 17 to make a reciprocating motion up and down to cut the kraft paper, thereby realizing the integration of kraft paper transportation and cutting, thereby reducing the production cost of kraft paper cutting; and by pressing the two buttons 18 to slide, the connecting column 19 is driven to slide, and the inclined opening 21 opened by the connecting column 19 forms an inclined structure inside the trapezoidal plate 20. At this time, the connecting column 19 will slide against the trapezoidal plate 20, so that the two trapezoidal plates 20 slide to the far side and squeeze the spring 22, so that the spring 22 can store elastic potential energy, and then give the trapezoidal plate 20 a reverse force to clamp the connecting plate 16, so that the connecting plate 16 can be quickly installed and disassembled without using special tools for installation and disassembly, thereby improving the efficiency of replacement;

[0040] Then the cut kraft paper will fall onto the support platform 33. As the kraft paper is stacked and interlaced, the square plate 35 is pushed to slide by driving the cylinder 34, and then the rotating rod 36 is driven to slide. As the rotating rod 36 slides, the rotating plate 37 is driven to slide. During the rotation process, the multiple rotating plates 37 will respectively drive a sliding block 38 to slide, thereby driving the clamping plate 40 to slide. At this time, the multiple clamping plates 40 will move closer to the adjacent side, so that the multiple layers of kraft paper can be gathered as a whole, which is convenient for subsequent transportation and further improves work efficiency.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. 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 paper cutting device, comprising a bottom plate (1), characterized in that: A plurality of supporting legs (2) are fixedly connected to the middle of the top side of the bottom plate (1), and a reinforcing plate (42) is fixedly connected to the adjacent side of each two supporting legs (2), and a protective box (4) is fixedly connected to the rear side of one of the reinforcing plates (42), and a driving assembly for driving subsequent components is fixedly connected to the rear side of the inner wall of the protective box (4), and a driving wheel (8) is fixedly connected to the rear end of the driving assembly, and a belt (9) is provided on the outer side of the driving wheel (8), and a strip box (10) is fixedly connected to the top sides of two supporting legs (2), and the strip box (10) is The rear end is rotatably connected to a rotating assembly for transmitting power, the rear side of the rotating assembly is fixedly connected to a driven wheel (12), the front end of the rotating assembly is slidably connected to a vertical plate (15), the bottom side of the vertical plate (15) is fixedly connected to a connecting plate (16), the bottom end of the connecting plate (16) is slidably connected to a cutting knife (17), the front and rear ends of the cutting knife (17) are slidably connected to a pressing assembly for pressing subsequent components, the bottom end of the pressing assembly is slidably connected to a trapezoidal plate (20), and the far sides of the two trapezoidal plates (20) are fixedly connected to springs (22).

2. A paper cutting device according to claim 1, characterized in that: The far side of the cutting knife (17) is fixedly connected to a side block (23), the front side of another reinforcement plate (42) is installed with a control box (26), the top ends of the other two support legs (2) are rotatably connected to a limit rod (28), the left end of the top side of the bottom plate (1) is fixedly connected to two opening plates (29), the top ends of the two opening plates (29) are rotatably connected to a cloth placing rod (30), a right-angle opening (31) is opened inside the support leg (2), a plurality of strip plates (32) are fixedly connected to the right end of the top side of the bottom plate (1), and the top side of the strip plates (32) is fixedly connected to a support platform (3 3), the bottom side of the support platform (33) is fixedly connected to a cylinder (34), the driving end of the cylinder (34) is fixedly connected to a square plate (35), the four sides of the square plate (35) are rotatably connected to a rotating rod (36), the outside of the rotating rod (36) is fixedly connected to a rotating plate (37), the top of the rotating plate (37) is rotatably connected to a sliding block (38), the far side of the sliding block (38) is fixedly connected to a side plate (39), the top side of the sliding block (38) is fixedly connected to a clamping plate (40), and two strip openings (41) are provided on the four sides of the interior of the support platform (33).

3. A paper cutting device according to claim 1, characterized in that: The driving assembly comprises a motor (5), the rear side of the motor (5) is fixedly connected to the rear side of the inner wall of the protective box (4), the driving end of the motor (5) is fixedly connected to a rotating shaft (6), the front end of the rotating shaft (6) is fixedly connected to a driven roller (7), and the left ends of the two reinforcement plates (42) are rotatably connected to a driving roller (27).

4. A paper cutting device according to claim 3, characterized in that: The rear end of the rotating shaft (6) is fixedly connected to the inner wall of the driving wheel (8), and a processing plate (3) is fixedly connected to adjacent sides of the plurality of supporting legs (2).

5. A paper cutting device according to claim 1, characterized in that: The rotating assembly comprises a driven shaft (11), the outer portion of the driven shaft (11) is rotatably connected to the inner wall of the rear end of the bar box (10), a fixing plate (24) is fixedly connected to the inner wall of the bar box (10) at the rear end, a circular ring (25) is rotatably connected to the inner wall of the fixing plate (24), a circular plate (13) is fixedly connected to the front side of the driven shaft (11), a rotating column (14) is fixedly connected to the front side of the circular plate (13), the outer portion of the driven shaft (11) is fixedly connected to the inner wall of the circular ring (25), and the rear side of the driven shaft (11) is fixedly connected to the driven wheel (12).

6. A paper cutting device according to claim 5, characterized in that: The outside of the driven wheel (12) is sleeved inside the belt (9), the outside of the rotating column (14) is slidably connected to the inner wall of the vertical plate (15), and the outside of the connecting plate (16) is slidably connected to the inner wall of the bottom end of the bar box (10).

7. A paper cutting device according to claim 1, characterized in that: The pressing assembly comprises a button (18), the exteriors of the two buttons (18) being slidably connected to the inner walls at the front and rear ends of the cutting knife (17), respectively, and the bottom side of the button (18) being fixedly connected to a connecting column (19).

8. A paper cutting device according to claim 7, characterized in that: The outside of the connecting column (19) is slidably connected to the inner wall of the trapezoidal plate (20), and the left and right sides of the trapezoidal plate (20) are both provided with inclined openings (21). The adjacent ends of the two trapezoidal plates (20) are slidably connected to the front and rear ends of the bottom of the connecting plate (16), and the distant ends of the two springs (22) are fixedly connected to the inner walls of the front and rear ends of the cutting knife (17).

Images