Cutting device with angle adjusting function for welding gun head production

Abstract

The invention discloses a welding gun head production cutting device with an angle adjusting function, and relates to the technical field of cutting devices.The welding gun head production cutting device comprises a cutting box body, cutting equipment, a fixing device, a feeding box and a feeding device, the cutting box body and the cutting equipment are connected in a fastened mode, the fixing device and the cutting box body are connected in a fastened mode, and the feeding box and the feeding device are connected; the fixing device is located at the tail end of the feeding device, the fixing device is fixedly connected with the cutting equipment, the cutting box serves as a main installation foundation and is used for installing other assemblies, the fixing device and the cutting equipment are fixedly installed through the cutting box, and the feeding box serves as a main storage device and is used for storing materials. Raw materials in the feeding box are fed into the fixing device through the feeding device to be fixed, and then the raw materials are cut through the cutting equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cutting device, and particularly relates to a cutting device with angle adjustment function for welding gun head production. BACKGROUND

[0002] In the welding gun head production process, the cutting process has high requirements for precision and flexibility. The existing cutting device has many defects.

[0003] Traditional cutting equipment is designed with a fixed angle and can only adapt to the cutting needs of a single specification of gun head. When gun head notches with different inclination angles need to be processed, the cutting mechanism needs to be disassembled and reassembled, which is not only cumbersome to operate, but also prone to positioning errors due to re-adjustment, has poor versatility and low efficiency. After the welding gun head is forged and polished in the early stage, metal debris, oxide scale and other residues are easily left on the surface. Moreover, the existing feeding box is of an open or single cavity structure, and dust is easily attached to the surface of the gun head during storage. At the same time, the feeding logic often prioritizes the delivery of gun heads close to the cavity opening. These gun heads with residues and dust will not fit tightly with the fixing frame after entering the fixing device, resulting in a small displacement and ultimately causing the cutting size to be out of tolerance. SUMMARY

[0004] The present application aims to provide a cutting device with angle adjustment function for welding gun head production to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions. A cutting device with angle adjustment function for welding gun head production, comprising a cutting box body, a cutting device, a fixing device, a feeding box and a feeding device, the cutting box body and the cutting device are fixedly connected, the fixing device and the cutting box body are fixedly connected, the feeding box and the feeding device are connected, the fixing device is located at the end of the feeding device, and the fixing device and the cutting device are fixedly connected.

[0006] The cutting box body serves as the main installation base and is used for installing other components. The fixing device and the cutting device are fixedly installed through the cutting box body. The feeding box serves as the main storage device and is used for storing materials. The raw materials in the feeding box are fed into the fixing device through the feeding device, fixed, and then cut by the cutting device.

[0007] Further, the fixing device comprises a fixing frame, a moving platform, a moving base plate, a driving cylinder, a driving motor and a fixing rod, the fixing frame is fixedly connected with the cutting box, the moving platform is slidably connected with the fixing frame, the driving cylinder is fixedly connected with the moving base plate, the output end of the driving cylinder is fixedly connected with the moving platform, the driving motor is fixedly connected with the moving base plate, the moving base plate is slidably connected with the moving platform, the driving motor is used for driving the moving base plate to move along the fixing rod, the moving base plate is fixedly connected with the moving platform, the fixing rod is fixedly connected with the fixing frame, and the cutting device is fixedly connected with the moving platform.

[0008] The fixing frame is used as a main mounting base for mounting and positioning other components, materials in the feeding box are sent to the fixing frame through the feeding device, then the position of the moving platform is adjusted through the driving cylinder, so that the position of the cutting device on the moving platform is adjusted, so that the cutting device can cut the materials fixed under the fixing frame, then the driving motor outputs torque to drive the moving base plate to move on the fixing rod, so as to drive the moving base plate and the moving platform to move, and the moving platform moves to control the cutting device to adjust the cutting position.

[0009] Further, the cutting device comprises a mounting ring, a moving motor, a cutting cylinder, a cutting motor and a cutting tool, the mounting ring is provided with a first mounting groove, the moving motor is arranged in the first mounting groove, the moving motor is slidably connected with the first mounting groove, the moving motor is used for driving the cutting cylinder to move in the first mounting groove, the cutting cylinder is arranged in the first mounting groove, the cutting cylinder is slidably connected with the first mounting groove, the output end of the moving motor is fixedly connected with the cutting cylinder, the output end of the cutting cylinder is fixedly connected with the cutting motor, and the output end of the cutting motor is fixedly connected with the cutting tool.

[0010] The mounting ring is used as a main mounting base for mounting other components, the first mounting groove is arranged to provide mounting positions for other components, when it is necessary to cut materials, the cutting motor is driven to move by the continuous output of the cutting cylinder, the cutting tool is driven to move by the movement of the cutting motor, so that the cutting tool reaches the working position, and the cutting tool is driven to rotate by the output of the cutting motor, the cutting tool cuts the materials by the continuous output of the cutting cylinder, when it is necessary to adjust the cutting angle, the cutting cylinder is driven to move in the first mounting groove by the output of the moving motor, so as to drive the cutting tool to rotate, so as to adjust the cutting angle.

[0011] Further, the feeding box comprises a fixed box body, a first rotating cover plate and a second rotating cover plate, the fixed box body is hingedly connected with the first rotating cover plate, and the second rotating cover plate is hingedly connected with the fixed box body, the first rotating cover plate is arranged at the uppermost position of the fixed box body, and the second rotating cover plate is arranged at the side of the fixed box body.

[0012] By setting the first rotating cover plate and the second rotating cover plate on the fixed box, materials can be placed in the fixed box by opening the first rotating cover plate or the second rotating cover plate, and the second rotating cover plate can be opened when the materials are taken, thereby facilitating the taking of the materials below.

[0013] Further, the fixed box is provided with a first installation cavity, a second installation cavity and a second installation slot, the first installation cavity and the second installation cavity are communicated through the second installation slot, and the feeding device is arranged in the second installation cavity.

[0014] By setting the second installation slot, the first installation cavity and the second installation cavity are communicated, so that the materials in the first installation cavity can be sent to the second installation cavity through the second installation slot.

[0015] Further, the first installation cavity is divided into multiple layers to place multiple layers of welding gun heads, and the second installation slot is arranged below the middle of the first installation cavity.

[0016] By placing multiple layers of welding gun heads in the first installation cavity, the multiple layers of welding gun heads are arranged in order in the first installation cavity, and the second installation slot is arranged at the middle below the first installation cavity, so that the middle gun head of the lowest layer in the first installation cavity is discharged at the same time, and the falling welding gun head in the first installation cavity interacts with other welding gun heads, so that the adjacent welding gun heads rotate through the friction force between the gun heads, the rotation of the adjacent welding gun heads causes the mutual friction of the outer surfaces of the adjacent welding gun heads, thereby cleaning the welding gun heads, ensuring the processing precision, preventing positioning deviation caused by the existence of residues during the fixing process, and the middle gun head of the lowest layer is the gun head farthest from the external environment among the multiple layers of gun heads, and is surrounded by other gun heads, so it is the gun head least affected by dust. By discharging the middle gun head of the lowest layer, it is ensured that the gun head discharged each time is relatively clean, thereby improving the positioning effect of the gun head in the subsequent process.

[0017] Further, the second installation slot is provided with a discharging motor and a discharging plate, the discharging motor is tightly connected with the second installation slot, and the output end of the discharging motor is tightly connected with the discharging plate.

[0018] When the welding gun heads in the first installation cavity need to be sent to the second installation cavity, the discharging plate is rotated in the direction away from the first installation cavity by the discharging motor to control the output torque, so that the welding gun heads above the second installation slot fall onto the feeding device of the second installation cavity.

[0019] Further, the feeding device comprises support rods, a feeding plate, a rotating rod, fixing plates and a feeding motor, the four support rods are fixedly connected with the second mounting cavity, the feeding plate is slidably connected with the support rods, the two fixing plates are provided with the feeding motor, the output end of the feeding motor is fixedly connected with the rotating rod, the other end of the rotating rod is rotatably connected with the fixing plates, and the rotating rod is screwedly connected with the feeding plate.

[0020] The feeding motor is mounted on the fixing plate close to one side of the cutting box body, the support rods are used as the main mounting base for mounting and positioning other components, when the welding torch head falls into the area surrounded by the four support rods in the second mounting cavity, the output torque of the feeding motor is used to control the rotating rod to rotate, the rotating rod drives the feeding plate to move, and the feeding plate drives the welding torch head on the support rod to move into the fixing frame, and then the fixing frame is used for fixing the welding torch head.

[0021] Compared with the prior art, the present application has the following beneficial effects: 1. The cutting angle is adjustable, when the cutting angle needs to be adjusted, the moving motor can drive the cutting cylinder to slide along the first mounting groove, and drive the cutting tool to rotate synchronously, so that different angle cutting requirements can be adapted without disassembly, a plurality of specifications of welding torch heads can be adapted, and the universality is significantly improved.

[0022] 2. The first mounting cavity of the feeding box adopts a multi-layer storage design, in the falling process of the torch head, adjacent torch heads are rotated by surface friction, and residual residues can be automatically cleaned; meanwhile, the second mounting groove is arranged at the middle position below the first mounting cavity, and the torch head in the middle of the lowermost layer is preferentially fed, the position is surrounded by other torch heads, and is least polluted by external dust, so that the influence of residues and dust on positioning is reduced from the source, the fixing deviation is greatly reduced, and the cutting precision is improved.

[0023] 3. The feeding box is designed with a first rotating cover plate (top) and a second rotating cover plate (side), the top cover plate is convenient for batch feeding, and the side cover plate is convenient for cleaning the residual torch head at the bottom of the cavity. DETAILED DESCRIPTION

[0024] Figure 1 It is a schematic view of the overall structure of the present application; Figure 2 It is a schematic view of the cutting box structure of the present application; Figure 3 It is a schematic view of the fixing device structure of the present application; Figure 4 It is a schematic view of the cutting device structure of the present application; Figure 5 It is a schematic view of the structure of the feeding box of the present application; Figure 6 It is a schematic view of the structure of the feeding device of the present application; Figure 7 for Figure 6 A magnified view of part A; Figure 8 This is a schematic diagram of the second mounting cavity structure of the present invention; Figure 9 for Figure 8 A magnified view of a portion of area B.

[0025] In the diagram: 1. Cutting box; 2. Cutting equipment; 21. Mounting ring; 211. First mounting slot; 22. Moving motor; 23. Cutting cylinder; 24. Cutting motor; 25. Cutting tool; 3. Fixing device; 31. Fixing frame; 32. Moving platform; 33. Moving base plate; 34. Drive cylinder; 35. Drive motor; 36. Fixing rod; 4. Feeding box; 41. Fixing box; 411. First mounting cavity; 412. Second mounting cavity; 413. Second mounting slot; 42. First rotating cover plate; 43. Second rotating cover plate; 44. Feeding motor; 45. Feeding plate; 5. Feeding device; 51. Support rod; 52. Feeding plate; 53. Rotating rod; 54. Fixing plate; 55. Feeding motor. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example: Figures 1-9 As shown, the present invention provides a cutting device for producing welding torch heads with angle adjustment function. The cutting device includes a cutting box 1, a cutting device 2, a fixing device 3, a feeding box 4, and a feeding device 5. The cutting box 1 and the cutting device 2 are fastened together. The fixing device 3 and the cutting box 1 are fastened together. The feeding box 4 and the feeding device 5 are connected. The fixing device 3 is located at the end of the feeding device 5 and is fastened together with the cutting device 2.

[0028] The cutting box 1 serves as the main installation base for installing other components. The fixing device 3 and the cutting equipment 2 are fixedly installed through the cutting box 1. The feeding box 4 serves as the main storage device for storing materials. The raw materials in the feeding box 4 are fed into the fixing device 3 through the feeding device 5 for fixing. Then, the raw materials are cut by the cutting equipment 2.

[0029] like Figures 1-3As shown, the fixing device 3 includes a fixing frame 31, a moving platform 32, a moving base plate 33, a drive cylinder 34, a drive motor 35, and a fixing rod 36. The fixing frame 31 is fastened to the cutting box 1, the moving platform 32 is slidably connected to the fixing frame 31, the drive cylinder 34 is fastened to the moving base plate 33, the output end of the drive cylinder 34 is fastened to the moving platform 32, the drive motor 35 is fastened to the moving base plate 33, the moving base plate 33 is slidably connected to the moving platform 32, the drive motor 35 is used to drive the moving base plate 33 to move along the fixing rod 36, the moving base plate 33 is fastened to the moving platform 32, the fixing rod 36 is fastened to the fixing frame 31, and the cutting device 2 is fastened to the moving platform 32.

[0030] The fixed frame 31 serves as the main mounting base for positioning other components. The material in the feeding box 4 is fed into the fixed frame 31 by the feeding device 5. Then, the position of the moving platform 32 is adjusted by the drive cylinder 34, thereby adjusting the position of the cutting device 2 on the moving platform 32 so that the cutting device 2 can cut the material fixed under the fixed frame 31. Then, the torque output by the drive motor 35 drives the moving base plate 33 to move on the fixed rod 36, thereby driving the moving base plate 33 and the moving platform 32 to move. The movement of the moving platform 32 controls the cutting device 2 to adjust the cutting position.

[0031] like Figures 1-4 As shown, the cutting device 2 includes a mounting ring 21, a moving motor 22, a cutting cylinder 23, a cutting motor 24, and a cutting tool 25. The mounting ring 21 is provided with a first mounting groove 211. The moving motor 22 is placed in the first mounting groove 211 and is slidably connected to the first mounting groove 211. The moving motor 22 is used to drive the cutting cylinder 23 to move within the first mounting groove 211. The cutting cylinder 23 is placed in the first mounting groove 211 and is slidably connected to the first mounting groove 211. The output end of the moving motor 22 is fastened to the cutting cylinder 23. The output end of the cutting cylinder 23 is fastened to the cutting motor 24. The output end of the cutting motor 24 is fastened to the cutting tool 25.

[0032] The mounting ring 21 serves as the main mounting base for mounting other components. The first mounting groove 211 provides mounting positions for other components. When material needs to be cut, the cutting cylinder 23 outputs displacement to drive the cutting motor 24 to move. The movement of the cutting motor 24 drives the cutting tool 25 to move, thereby bringing the cutting tool 25 to the working position. At the same time, the cutting motor 24 outputs torque to drive the cutting tool 25 to rotate. The continuous output of the cutting cylinder 23 enables the cutting tool 25 to cut the material. When the cutting angle needs to be adjusted, the output of the moving motor 22 drives the cutting cylinder 23 to move within the first mounting groove 211, thereby driving the cutting tool 25 to rotate and thus adjusting the cutting angle.

[0033] As shown in Figure 1 and Figure 5 , the feeding box 4 includes a fixed box body 41, a first rotating cover plate 42 and a second rotating cover plate 43, the fixed box body 41 and the first rotating cover plate 42 are hinged, the second rotating cover plate 43 and the fixed box body 41 are hinged, the first rotating cover plate 42 is placed on the top of the fixed box body 41, and the second rotating cover plate 43 is placed on the side of the fixed box body 41.

[0034] By setting the first rotating cover plate 42 and the second rotating cover plate 43 on the fixed box body 41, materials can be placed in the fixed box body 41 by opening the first rotating cover plate 42 or the second rotating cover plate 43, and the second rotating cover plate 43 can be opened when taking materials, thereby facilitating the taking of the materials below.

[0035] As shown in Figures 5-7 , the fixed box body 41 is provided with a first installation cavity 411, a second installation cavity 412 and a second installation groove 413, the first installation cavity 411 and the second installation cavity 412 are communicated through the second installation groove 413, and the feeding device 5 is placed in the second installation cavity 412.

[0036] By setting the second installation groove 413, the first installation cavity 411 and the second installation cavity 412 are communicated, so that the materials in the first installation cavity 411 can be sent to the second installation cavity 412 through the second installation groove 413.

[0037] As shown in Figure 6 and Figure 7 , the first installation cavity 411 is layered to place multiple layers of welding gun tips, and the second installation groove 413 is placed below the middle of the first installation cavity 411.

[0038] By placing the multi-layer welding torch head in the first installation cavity 411, the multi-layer welding torch head is arranged in the first installation cavity 411, and the second installation groove 413 is arranged in the middle position below the first installation cavity 411, so that the middle torch head in the lowermost layer of the multi-layer welding torch head in the first installation cavity 411 is discharged, and the falling of the welding torch head in the first installation cavity 411 interacts with other welding torch heads, so that the adjacent welding torch heads rotate by the friction force between the torch heads. By rotating the adjacent welding torch heads, the outer surfaces of the adjacent welding torch heads are rubbed with each other, thereby cleaning the welding torch head surface residues, thereby ensuring the machining precision, preventing positioning deviation due to the existence of residues during the fixing process, and the middle torch head in the lowermost layer is the torch head farthest from the external environment, and is also surrounded by other torch heads. It is the torch head with the least dust attachment. By discharging the middle torch head in the lowermost layer, it is ensured that the torch head discharged each time is a relatively clean torch head, thereby improving the positioning effect of the torch head in the subsequent process.

[0039] As shown in Figure 7 , the second installation groove 413 is provided with a discharging motor 44 and a discharging plate 45, the discharging motor 44 and the second installation groove 413 are tightly connected, and the output end of the discharging motor 44 and the discharging plate 45 are tightly connected.

[0040] When it is needed to send the welding torch head in the first installation cavity 411 to the second installation cavity 412, the discharging motor 44 rotates to output a rotating torque to control the discharging plate 45 to rotate away from the first installation cavity 411, so that the welding torch head above the second installation groove 413 falls onto the feeding device 5 of the second installation cavity 412.

[0041] As shown in Figure 6 , Figure 8 and Figure 9 , the feeding device 5 includes a support rod 51, a feeding plate 52, a rotating rod 53, a fixed plate 54 and a feeding motor 55. The support rod 51 has four, the four support rods 51 and the second installation cavity 412 are tightly connected, the feeding plate 52 and the support rod 51 are slidingly connected, the fixed plate 54 has two, the fixed plate 54 is provided with the feeding motor 55, the output end of the feeding motor 55 and the rotating rod 53 are tightly connected, the other end of the rotating rod 53 and the fixed plate 54 are rotatably connected, and the rotating rod 53 and the feeding plate 52 are threadedly connected.

[0042] The feeding motor 55 is installed on the fixed plate 54 close to the cutting box 1, and the support rod 51 is used as a main installation base for installation and positioning of other components, when the welding torch head falls into the area surrounded by the four support rods 51 in the second installation cavity 412 from the second installation slot 413, then the rotation of the rotating rod 53 is controlled by the output torque of the feeding motor 55, the movement of the feeding plate 52 is driven by the rotation of the rotating rod 53, and the welding torch head on the support rod 51 is moved into the fixed frame 31, and then the welding torch head is fixed by the fixed frame 31.

[0043] The working principle of the present application is as follows: the cutting box 1 is used as a main installation base for installation of other components, the fixing device 3 and the cutting equipment 2 are fixed and installed by the cutting box 1, a plurality of welding torch heads are placed in the first installation cavity 411, the plurality of welding torch heads are arranged in the first installation cavity 411, and the second installation slot 413 is arranged at the middle position below the first installation cavity 411, so that the middle torch head in the lowermost layer of the plurality of welding torch heads in the first installation cavity 411 is discharged, and the falling of the welding torch head in the first installation cavity 411 interacts with other welding torch heads, so that the adjacent welding torch heads rotate by the friction between the torch heads, the adjacent welding torch heads are cleaned by the rotation of the adjacent welding torch heads, the residue on the outer surface of the welding torch head is cleaned, the processing precision is ensured, and the positioning deviation caused by the residue in the fixing process is prevented, the middle torch head in the lowermost layer is the torch head farthest from the external environment and is surrounded by other torch heads, and is the torch head least affected by dust, the middle torch head in the lowermost layer ensures that the torch head discharged each time is relatively clean, the positioning effect of the torch head in the subsequent process is improved, the raw material in the feeding box 4 is sent into the fixing device 3 by the feeding device 5, is fixed, and then is cut by the cutting equipment 2.

[0044] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalents of the claims are intended to be embraced therein. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A cutting device for producing welding torch heads with angle adjustment function, characterized in that: The cutting device includes a cutting box (1), a cutting device (2), a fixing device (3), a feeding box (4), and a feeding device (5). The cutting box (1) and the cutting device (2) are fastened together. The fixing device (3) and the cutting box (1) are fastened together. The feeding box (4) and the feeding device (5) are connected together. The fixing device (3) is located at the end of the feeding device (5). The fixing device (3) and the cutting device (2) are fastened together. The feeding box (4) includes a fixed box body (41), a first rotating cover plate (42) and a second rotating cover plate (43). The fixed box body (41) and the first rotating cover plate (42) are hinged together, and the second rotating cover plate (43) and the fixed box body (41) are hinged together. The first rotating cover plate (42) is located at the top of the fixed box body (41), and the second rotating cover plate (43) is located on the side of the fixed box body (41). The fixed housing (41) is provided with a first mounting cavity (411); The first mounting cavity (411) holds the multi-layer welding torch head.

2. The cutting device for producing welding torch heads with angle adjustment function according to claim 1, characterized in that: The fixing device (3) includes a fixing frame (31), a moving platform (32), a moving base plate (33), a drive cylinder (34), a drive motor (35), and a fixing rod (36). The fixing frame (31) is fastened to the cutting box (1). The moving platform (32) is slidably connected to the fixing frame (31). The drive cylinder (34) is fastened to the moving base plate (33). The output end of the drive cylinder (34) is fastened to the moving platform (32). The drive motor (35) is fastened to the moving base plate (33). The moving base plate (33) is slidably connected to the moving platform (32). The drive motor (35) is used to drive the moving base plate (33) to move along the fixing rod (36). The moving base plate (33) is fastened to the moving platform (32). The fixing rod (36) is fastened to the fixing frame (31). The cutting device (2) is fastened to the moving platform (32).

3. A cutting device for producing welding torch heads with angle adjustment function according to claim 2, characterized in that: The cutting device (2) includes a mounting ring (21), a moving motor (22), a cutting cylinder (23), a cutting motor (24), and a cutting tool (25). The mounting ring (21) is provided with a first mounting groove (211). The moving motor (22) is placed in the first mounting groove (211). The moving motor (22) and the first mounting groove (211) are slidably connected. The moving motor (22) is used to drive the cutting cylinder (23) to move in the first mounting groove (211). The cutting cylinder (23) is placed in the first mounting groove (211). The cutting cylinder (23) and the first mounting groove (211) are slidably connected. The output end of the moving motor (22) is fastened to the cutting cylinder (23). The output end of the cutting cylinder (23) is fastened to the cutting motor (24). The output end of the cutting motor (24) is fastened to the cutting tool (25).

4. A cutting device for producing welding torch heads with angle adjustment function according to claim 1, characterized in that: The fixed housing (41) is also provided with a second mounting cavity (412) and a second mounting groove (413). The first mounting cavity (411) and the second mounting cavity (412) are connected through the second mounting groove (413). The feeding device (5) is placed in the second mounting cavity (412).

5. A cutting device for producing welding torch heads with angle adjustment function according to claim 4, characterized in that: The second mounting slot (413) is located in the middle below the first mounting cavity (411).

6. A cutting device for producing welding torch heads with angle adjustment function according to claim 5, characterized in that: The second mounting slot (413) is provided with a feeding motor (44) and a feeding plate (45). The feeding motor (44) is fastened to the second mounting slot (413), and the output end of the feeding motor (44) is fastened to the feeding plate (45).

7. A cutting device for producing welding torch heads with angle adjustment function according to claim 6, characterized in that: The feeding device (5) includes a support rod (51), a feeding plate (52), a rotating rod (53), a fixed plate (54), and a feeding motor (55). There are four support rods (51), which are fastened to the second mounting cavity (412). The feeding plate (52) and the support rods (51) are slidably connected. There are two fixed plates (54), and the feeding motor (55) is provided on the fixed plate (54). The output end of the feeding motor (55) is fastened to the rotating rod (53), and the other end of the rotating rod (53) is rotatably connected to the fixed plate (54). The rotating rod (53) and the feeding plate (52) are threadedly connected.

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