An end finishing device

Abstract

The application provides an end polishing device, which belongs to the technical field of tappet processing equipment. The device comprises a conveying part, the conveying direction end side of the conveying part is provided with a push-out piece, and the other side is provided with a discharge port; the transfer part comprises a rotating disc arranged on one side of the conveying belt, a guide disc is arranged on the rotating disc, an annular groove is arranged on the top surface of the guide disc, a plurality of load assemblies are arranged in a circumferential array on the outer periphery of the rotating disc, the load assemblies are arranged to move along the radial direction of the rotating disc, one end of the load assembly is connected with the annular groove in a sliding mode, and the annular groove is arranged to be recessed inward at a preset position; the polishing part comprises a lifting platform arranged on one side of the rotating disc, a polishing assembly is arranged on the lifting platform, the polishing assembly comprises a push plate, a clamping assembly is arranged between the polishing assembly and the rotating disc, and the push plate is used to drive the clamping assembly to clamp the cylindrical piece during polishing. The scheme provided by the application can realize automatic feeding or discharging of the tappet, and the movement of the polishing disc is used to control the clamping or loosening of the tappet by the clamping assembly, so that the power source investment is reduced, and the cost is reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of tappet processing equipment, and relates to grinding equipment technology, particularly to an end grinding device. Background Technology

[0002] Tappets are core components of the valve train of an automotive engine. They are similar in shape to cylindrical parts, with one end recessed and having a blind hole, and the other end closed. During processing, the closed end needs to be polished to optimize its surface quality and improve its wear resistance and reliability.

[0003] Existing equipment for grinding pushrods typically includes a turntable and protruding rods arranged in a circular array around its outer circumference. Before grinding, workers manually insert the end of the pushrod with the blind hole into the corresponding rod in sequence. The turntable then rotates the rod carrying the pushrod to the grinding end of the grinder for grinding. After grinding, the pushrod continues to rotate one full turn with the turntable and returns to the starting position. The worker then removes it and inserts another pushrod to be ground in the same position, thus starting the next round of grinding. This process requires workers to stand beside the equipment and operate manually, which is time-consuming and labor-intensive. Furthermore, the clamping mechanism that holds the side wall of the pushrod during grinding requires an additional power mechanism, resulting in high costs. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention provides an end grinding device that enables automatic feeding or unloading of the tappet and uses the movement of the grinding disc to control the clamping assembly to clamp or release the tappet, thereby reducing power source input and lowering costs.

[0005] In order to achieve the objective of this invention, the following solution is proposed: An end-grinding device, comprising: The conveying unit includes a conveyor belt for conveying pushers, with a pusher on one end of the conveying direction and a discharge port on the other end. The pusher is used to push the conveyed pushers out of the discharge port. The transfer section includes a turntable located on one side of the conveyor belt, on which a guide plate is fixedly connected to a frame. The top surface of the guide plate is recessed with an annular groove. The outer circumference of the turntable is provided with a material-carrying assembly arranged in a circular array. The material-carrying assembly is arranged to move radially along the turntable. One end of the assembly is used to carry the ejected pusher, and the other end is slidably connected to the annular groove. The annular groove is recessed inward toward its axis at a preset position. The grinding section includes a lifting platform located on one side of the turntable. The lifting platform is equipped with a grinding assembly that moves radially along the turntable. The grinding assembly includes a mounting base and a grinding mechanism mounted on the mounting base. A push plate is vertically mounted on the side of the mounting base facing the turntable. A gantry frame is located at one end of the lifting platform. A set of clamping assemblies is slidably mounted on the gantry frame. A guide seat is located below the horizontal part of the gantry frame. A rotating rod is rotatably mounted on one side of the guide seat. The lower ends of the clamping assemblies are respectively connected to the two ends of the rotating rod. During grinding, the push plate is used to push the rotating rod to rotate, causing the set of clamping assemblies to move relative to each other, thereby clamping the push rod.

[0006] Furthermore, the turntable is provided with an outer ring plate, and an inner ring plate is concentrically provided inside the outer ring plate. The outer ring plate has a circular array of holes running through it. The outer ring plate has rectangular holes corresponding to the circular holes one by one on its outer circumference. The material loading assembly includes a T-shaped rod, the vertical part of which passes through the circular hole. The horizontal part of the T-shaped rod is coaxially provided with a rectangular rod. One end of the rectangular rod passes through the rectangular hole and is provided with a limiting seat. The bottom surface of the limiting seat is provided with a support rod. The lower end of the support rod is slidably engaged with the annular groove. A cylindrical spring passes through the rectangular rod, and its two ends abut against the horizontal part of the T-shaped rod and the outer wall of the inner ring plate, respectively.

[0007] Furthermore, the cross-section of the annular groove is an inverted T-shaped structure, and the lower end of the support rod is provided with a rotating sleeve, which is located inside the horizontal part of the annular groove and rolls in contact with both sides of the horizontal part of the annular groove.

[0008] Furthermore, the T-shaped bar has a circular cross-section, and its vertical part is covered with a rubber layer.

[0009] Furthermore, the bottom of the lifting platform is provided with a lifting seat, and one side of the rotation center of the rotating rod is provided with a strip hole corresponding to the push plate, and the other side is provided with a tension spring. One end of the tension spring is connected to the guide seat, and the other end is connected to the rotating rod.

[0010] Furthermore, the end of the push plate facing the strip hole has a bevel.

[0011] Furthermore, the clamping assembly includes a set of symmetrical grippers that move along the transverse portion of the gantry frame. A connecting rod is rotatably provided on one side of the lower end of the grippers, and the connecting rod is rotatably connected to the corresponding end of the rotating rod.

[0012] Furthermore, an arc-shaped plate is provided on the opposite side of the grippers.

[0013] Furthermore, the grinding assembly also includes a cylinder mounted on the lifting platform, the output end of which is connected to the other side of the mounting base. The grinding mechanism is equipped with a grinding disc that rotates towards the turntable, and a push plate is vertically connected to the mounting base.

[0014] Furthermore, strip grooves are provided on both sides along the length of the lifting platform, and a slider is provided at the bottom of the mounting base, with the slider slidably connected to the corresponding strip groove.

[0015] The beneficial effects of this invention are as follows: A cylinder is installed on one side of the conveyor belt, which moves in a direction perpendicular to the axis of the turntable. This automatically pushes the pusher into the loading assembly, enabling automatic feeding. Under the action of the turntable, the pusher that has entered the pushing assembly is transferred to the grinding assembly. As the grinding assembly moves toward the end of the pusher, it drives the push plate to move, thereby causing the clamping assembly to clamp both sides of the pusher. This saves on the investment of the power source and reduces costs. Attached Figure Description

[0016] The accompanying drawings described herein are merely illustrative of selected embodiments, not all possible implementations, and are not intended to limit the scope of the invention.

[0017] Figure 1 A schematic diagram illustrating the application scenario of this application is shown.

[0018] Figure 2 A three-dimensional structural schematic diagram of the material-carrying part of this application is shown.

[0019] Figure 3 A schematic diagram of the outer ring plate and inner ring plate of this application is shown.

[0020] Figure 4 This application shows Figure 1 A cross-sectional view of the material-carrying section along the long axis of the lifting platform.

[0021] Figure 5 This application shows Figure 4 A magnified view of part A in the diagram.

[0022] Figure 6 A schematic diagram of the connection structure between one of the material loading components and the guide plate of this application is shown.

[0023] Figure 7 A schematic diagram showing the clamping and grinding states of the present application in the clamping state is shown.

[0024] Figure 8 This application shows Figure 7 A magnified view of part B in the diagram.

[0025] Figure 9 This application shows Figure 7 A three-dimensional diagram of the other side.

[0026] Figure 10 A schematic diagram showing the state of the clamping part and the grinding part in the released state of this application is shown.

[0027] Figure 11 This application shows Figure 10 A magnified view of part C in the diagram.

[0028] Markings in the diagram: Column-1, Conveying section-10, Conveying belt-11, Discharge port-111, Push-out component-12, Transfer section-20, Turntable-21, Guide plate-22, Annular groove-221, Loading assembly-23, T-shaped rod-231, Rectangular rod-232, Limiting seat-233, Support rod-234, Cylindrical spring-235, Rotating sleeve-236, Outer ring plate-24, Round hole-241, Inner ring plate-25, Rectangular hole-251 Grinding section-30, Lifting platform-31, Lifting seat-311, Portal frame-312, Guide seat-313, Rotating rod-314, Strip hole-315, Tension spring-316, Strip groove-317, Grinding assembly-32, Cylinder-321, Mounting seat-322, Grinding mechanism-323, Push plate-324, Inclined surface-325, Slider-326, Clamping assembly-33, Claw-331, Connecting rod-332, Arc plate-333. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the implementation methods of the present invention will be described in detail below with reference to the accompanying drawings. However, the embodiments described in this invention are only some embodiments of the present invention, and not all embodiments.

[0030] like Figures 1-11 As shown, this embodiment provides an end-grinding device, including a conveying section 10, a transfer section 20, and a grinding section 30. The conveying section 10 and the grinding section 30 are arranged sequentially along the outer periphery of the transfer section 20 in the direction of rotation. The conveying section 10 is arranged along a tangential direction parallel to the outer periphery of the transfer section 20, and the grinding section 30 is located outside the transfer section 20 and is arranged radially along the transfer section 20.

[0031] Specifically, such as Figure 1 As shown, the conveying section 10 includes a conveyor belt 11 and an ejector 12. The end of the conveyor belt 11 in the conveying direction is provided with a discharge port 111 on the side facing the transfer section 20. The ejector 12 includes a linear mechanism perpendicular to the conveying direction of the conveyor belt 11, with its output end facing the conveyor belt 11. The ejector 12 is provided at the output end of the linear mechanism to eject the grinding column 1 at the end of the conveyor belt 11 in the conveying direction along the discharge port 111 and insert it into the transfer section 20 radially.

[0032] like Figures 1-6As shown, the transfer section 20 includes a turntable 21, a guide plate 22, a material loading assembly 23, an outer ring plate 24, and an inner ring plate 25. The turntable 21 has a horizontally arranged disc-shaped structure, and its bottom surface is coaxially provided with a rotating mechanism with the output end pointing vertically upward. The guide plate 22 is coaxially arranged on the top surface of the turntable 21, and a vertically upward mounting rod is provided at the center of the top surface of the guide plate 22. The mounting rod is fixedly connected to a frame. The outer ring plate 24 and the inner ring plate 25 are concentrically arranged on the top surface of the turntable 21, and the diameter of the inner ring plate 25 is smaller than the diameter of the outer ring plate 24. The inner ring plate 25 is located on the outer periphery of the guide plate 22.

[0033] An annular groove 221 is recessed on the top surface of the guide plate 22. The annular groove 221 is recessed in the direction of its axis at a preset position so that the projection of the recessed position on the turntable 21 is distributed at a 120° angle with the projection of the discharge port 111 and the grinding part 30 on the horizontal plane. The cross-section of the annular groove 221 is an inverted T-shaped structure.

[0034] like Figure 3 As shown, the outer ring plate 24 has circular holes 241 arranged in a circular array on its wall, and the inner ring plate 25 has rectangular holes 251 arranged in a circular array on its wall, with each rectangular hole 251 corresponding to a circular hole 241.

[0035] like Figures 4-5 As shown, the number of material-carrying components 23 is the same as the number of circular holes 241. Multiple material-carrying components 23 are arranged in a circular array along the outer periphery of the outer ring plate 24. Each material-carrying component 23 includes a T-shaped rod 231, a rectangular rod 232, a limiting seat 233, a support rod 234, a cylindrical spring 235, and a rotating sleeve 236. The T-shaped rod 231 has a circular cross-section, with its vertical part passing through the circular hole 241. The horizontal part of the T-shaped rod 231 is located between the outer ring plate 24 and the inner ring plate 25. One end of the rectangular rod 232 is coaxially connected to the horizontal part of the T-shaped rod 231, and the other end of the rectangular rod 232 passes through the rectangular hole 251. The cylindrical spring 235 is sleeved on... The outer wall of the rectangular rod 232 is designed so that one end of the cylindrical spring 235 abuts against the horizontal part of the T-shaped rod 231, and the other end abuts against the outer wall of the inner ring plate 25. The limiting seat 233 is located at the other end of the rectangular rod 232 and is located inside the inner ring plate 25. The bottom surface of the limiting seat 233 is a certain distance from the top surface of the guide plate 22. The support rod 234 is perpendicular to the top surface of the limiting seat 233. The lower end of the support rod 234 extends vertically downward into the guide groove 221 along the vertical part. The rotating sleeve 236 is rotatably located at the lower end of the support rod 234, and the outer wall of the rotating sleeve 236 is in rolling connection with the inner walls on both sides of the horizontal part of the guide groove 221. When the turntable 21 rotates, it drives the material loading components 23, the outer ring plate 24, and the inner ring plate 25 to rotate synchronously, thereby causing the rotating sleeve 236 to roll along the trajectory of the horizontal part of the guide groove 221.

[0036] Preferably, to facilitate the insertion of the tappet 1 into the vertical part of the T-shaped rod 231, a tapered surface is provided at the end of the vertical part of the T-shaped rod 231 away from the horizontal part.

[0037] In a further preferred embodiment, to prevent the pusher 1 from being thrown out by the centrifugal force generated by the rotation of the turntable 21 after it is inserted into the T-shaped rod 231, a rubber layer is provided on the outer wall of the vertical part of the T-shaped rod 231.

[0038] like Figure 1 , Figures 7-9 As shown, the grinding unit 30 includes a lifting platform 31, a grinding assembly 32, and a clamping assembly 33. The lifting platform 31 has a rectangular flat plate structure and is horizontally positioned on one side outside the turntable 21. The long axis of the lifting platform 31 is perpendicular to the axis of the turntable 21. At each of the four corners of the bottom surface of the lifting platform 31, a lifting seat 311 is vertically positioned downwards to drive the lifting platform 31 to move vertically upwards or downwards. A portal frame 312 spans the end of the lifting platform 31 facing the turntable 21. A guide seat 313 is vertically positioned in the middle of the end of the lifting platform 31 facing the turntable 21. The guide seat 313 is located directly below the horizontal part of the portal frame 312. A rotating rod 314 is rotatably mounted on the top of one side of the guide seat 313, and the length of the rotating rod 314 is greater than the width of the guide seat 313. A tension spring 316 is provided at the upper end of the diagonal of the surface, and a strip hole 315 is provided vertically at the lower end of the diagonal, which passes through both sides of the guide seat 313. The upper end of the strip hole 315 extends vertically towards the upper end of the guide seat 313, and the lower end of the strip hole 315 corresponds to the lower end of one diagonal of the guide seat 313. The lower end of the tension spring 316 is connected to one end of the rotating rod 314, and the strip hole 315 corresponds to the middle of the rotatable connection between the other end of the rotating rod 314 and the guide seat 313. Under normal conditions, the rotating rod 314 remains horizontal under the action of the tension spring 316. Strip grooves 317 are provided on both sides of the top surface of the lifting platform 31, and the length direction of the strip grooves 317 is parallel to the length direction of the lifting platform 31.

[0039] The grinding assembly 32 includes a cylinder 321, a mounting base 322, a grinding mechanism 323, a push plate 324, an inclined surface 325, and a slider 326. The cylinder 321 is horizontally mounted along the long axis of the lifting platform 31 at the end of the lifting platform 31 away from the turntable 21, and the output end of the cylinder 321 faces the direction of the turntable 21. The mounting base 322 is mounted on the output end of the cylinder 321, and the mounting base 322 slides in contact with the top surface of the lifting platform 31, and the vertical centerline of the mounting base 322 is perpendicular to the long axis of the lifting platform 31.

[0040] A grinding mechanism 323 is located on top of the mounting base 322. The grinding mechanism 323 includes a grinding disc facing the turntable 21, and the axis of the grinding disc coincides horizontally with the center line of the length direction of the lifting platform 31. A push plate 324 is vertically connected to the lower side of the mounting base 322 facing the turntable 21, and the vertical height of the push plate 324 is adapted to the vertical length of the strip hole 315. An inclined surface 325 is provided on the side of the push plate 324 facing the strip hole 315, and the front end of the inclined surface 325 is inclined downward. Two sliders 326 are provided and are respectively located on both sides of the lower end of the mounting base 322. The sliders 326 slide in cooperation with the strip groove 317. When the mounting base 322 moves towards the turntable 21 under the drive of the cylinder 321, the sliders 326 are used to improve the stability of the mounting base 322.

[0041] The clamping assembly 33 is disposed on the portal frame 321 and located between the mounting base 322 and the turntable 21. The clamping assembly 33 includes grippers 331, connecting rods 332, and arc-shaped plates 333. Two grippers 331 are symmetrically and slidably arranged along the horizontal part of the portal frame 312. The lower end of each gripper 331 is rotatably connected to the upper end of a connecting rod 332, and the lower end of the connecting rod 332 is rotatably connected to one end of a rotating rod 314. When the rotating rod 314 rotates, it drives the connecting rods 332 at both ends to rotate in the same direction, thereby causing the connecting rods 332 to drive the corresponding grippers 331 to move relative to each other along the horizontal part of the portal frame 312, thus clamping the two sides of the mast 1. When the rotating rod 314 rotates to a parallel state, the two grippers 331 move in opposite directions along the horizontal part of the portal frame 312, thereby releasing the clamping of the two sides of the mast 1. The arc plate 333 is located on the upper end of the gripper 331 and on the opposite side of the two grippers 331. The arc of the arc plate 333 is consistent with the arc of the outer wall of the pusher 1, so as to increase the contact area with the pusher 1 when the arc plate 333 is clamped, thereby improving the clamping stability.

[0042] Preferably, to prevent the curved plate 333 from scratching the outer wall of the tappet 1, a rubber layer is covered on the inner wall of the curved plate 333.

[0043] Specific operating procedures: The end of the pusher 1 with an opening is directed toward the side where the discharge port 111 is located and is conveyed on the conveyor belt 11. The turntable 21 is activated so that the axis of the T-shaped rod 231 corresponding to one of the material-carrying components 23 is aligned with the vertical centerline of the discharge port 111. When the pusher 1 is conveyed to the end of the conveyor belt 11 in the conveying direction, the ejector 12 is activated so that the ejector 1 pushes out the end of the conveyor belt 11 in the conveying direction so that the pusher 1 is inserted into the vertical part of the corresponding T-shaped rod 231, thereby realizing automatic feeding.

[0044] The turntable 21 is restarted and continues to rotate. When the T-shaped rod 231 with the pusher 1 inserted rotates to the front of the vertical center line of the mounting base 322, the turntable 21 stops. At this time, the lifting seat 311 is activated, so that the gripper 331 moves vertically upward along both sides of the pusher 1. Then the cylinder 321 is activated, so that the cylinder 321 pushes the mounting base 322 to move in the direction of the turntable 21, and at the same time the grinding mechanism 323 is activated, so that the grinding disc rotates.

[0045] As the mounting base 322 moves, the push plate 324 moves towards the direction of the slotted hole 315, causing the inclined surface 325 of the push plate 324 to pass through the slotted hole 315. During this process, the inclined surface 325 pushes the other end of the rotating rod 314 upwards, causing the end of the rotating rod 314 connected to the tension spring 316 to rotate downwards, presenting a shape as shown in the image. Figure 8 The state shown causes the connection between the connecting rod 322 and the rotating rod 314 in the direction of the slot 315 to rotate upward, and the connection between the connecting rod 322 and the rotating rod 314 in the direction of the tension spring 316 to rotate downward, thereby causing the clamps 331 on both sides to move relative to each other along the horizontal part of the portal frame 312, thus presenting the state shown. Figure 1 The arc-shaped plate 333 at the upper end of the clamping plate 331 clamps the two sides of the tappet 1. When the top surface of the push plate 324 contacts the rotating rod 314, the arc-shaped plate 333 is pressed tightly against the two sides of the tappet 1, and the mounting base 322 continues to move in the direction of the turntable 21 until the grinding disc contacts the side of the tappet 1 facing the grinding disc and grinding is performed, at which point the cylinder 321 is paused.

[0046] After grinding is completed, cylinder 321 is started to enter the return stroke, so that cylinder 321 drives mounting base 322 and grinding mechanism 323 to move away from the tappet 1. At the same time, push plate 324 is pushed out of strip hole 315 under the drive of mounting base 322. Rotating rod 314 is reset under the action of tension spring 316. Thus, connecting rod 332 on both sides drives corresponding grippers 331 to move in opposite directions along the horizontal part of portal frame 312 to release the gripper 1. Lifting seat 311 is started to move vertically downward, so that the top surface of gripper 331 moves to the lower side of tappet 1 to prevent tappet 1 from rotating with turntable 21.

[0047] When the material-carrying assembly 23 with the polished pusher 1 inserted moves to the recess of the guide groove 221 as the turntable 21 rotates, the rectangular rod 232 moves inward along the axial direction of the corresponding rectangular hole 351, so that the T-shaped rod 231 moves inward along the corresponding round hole 241, so that the pusher 1 automatically disengages under the obstruction of the outer ring plate 24, thereby realizing automatic material discharge.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to be the only or limiting of the invention. Those skilled in the art should understand that various changes or equivalent substitutions made to the present invention without departing from its scope are all within the protection scope of the present invention.

Claims

1. An end-grinding device, characterized in that, include: The conveying unit (10) includes a conveyor belt (11) for conveying the pusher (1), and a pusher (12) is provided on one side of the end of the conveying direction, and a discharge port (111) is provided on the other side. The pusher (12) is used to push the conveyed pusher (1) out from the discharge port (111). The transfer section (20) includes a turntable (21) located on one side of the conveyor belt (11), on which a guide plate (22) is fixedly connected to a frame. The top surface of the guide plate (22) is recessed with an annular groove (221). The outer periphery of the turntable (21) is arranged in a circular array with a material loading assembly (23). The material loading assembly (23) is arranged to move radially along the turntable (21). One end of the material loading assembly (23) is used to carry the ejected pusher (1), and the other end is slidably connected to the annular groove (221). The annular groove (221) is recessed inward toward its axis at a preset position. The grinding unit (30) includes a lifting platform (31) located on one side of the turntable (21). The lifting platform (31) is provided with a grinding assembly (32) that moves radially along the turntable (21). The grinding assembly (32) includes a mounting base (322) and a grinding mechanism (323) located on the mounting base (322). A push plate (324) is vertically provided on the side of the mounting base (322) facing the turntable (21). A gantry frame (312) is provided at one end of the lifting platform (31). A set of clamping components (33) is slidably provided on the gantry frame (312). A guide seat (313) is provided below the horizontal part of the gantry frame (312). A rotating rod (314) is rotatably provided on one side of the guide seat (313). The lower end of the clamping components (33) is connected to the two ends of the rotating rod (314) respectively. During grinding, the push plate (324) is used to push the rotating rod (314) to rotate, so that a set of clamping components (33) moves relative to each other, so as to clamp the push rod (1). The turntable (21) is provided with an outer ring plate (24), and an inner ring plate (25) is provided concentrically inside the outer ring plate (24). The outer ring plate (24) has a circular array of holes (241) running through it. The inner ring plate (25) has rectangular holes (251) on its outer periphery that correspond one-to-one with the holes (241). The material loading assembly (23) includes a T-shaped rod (231), the vertical part of which passes through the hole (241), and the horizontal part of the T-shaped rod (231) is coaxially arranged. There is a rectangular rod (232), one end of which passes through a rectangular hole (251) and is provided with a limiting seat (233). A support rod (234) is vertically provided on the bottom surface of the limiting seat (233). The lower end of the support rod (234) is slidably engaged with the annular groove (221). A cylindrical spring (235) is provided on the rectangular rod (232), and its two ends abut against the horizontal part of the T-shaped rod (231) and the outer wall of the inner ring plate (25), respectively. The bottom of the lifting platform (31) is provided with a lifting seat (311), and one side of the rotation center of the rotating rod (314) is provided with a strip hole (315) corresponding to the push plate (324), and the other side is provided with a tension spring (316). One end of the tension spring (316) is connected to the guide seat (313), and the other end is connected to the rotating rod (314). The push plate (324) has a bevel (325) at one end facing the strip hole (315); The clamping assembly (33) includes a set of symmetrical grippers (331) that move along the horizontal part of the gantry frame (312). A connecting rod (332) is rotatably provided on one side of the lower end of the grippers (331), and the connecting rod (332) is rotatably connected to the corresponding end of the rotating rod (314).

2. The end grinding device according to claim 1, characterized in that, The cross-section of the annular groove (221) is an inverted T-shaped structure. The lower end of the support rod (234) is provided with a rotating sleeve (236). The rotating sleeve (236) is located in the horizontal part of the annular groove (221) and rolls in contact with both sides of the horizontal part of the annular groove (221).

3. The end grinding device according to claim 1, characterized in that, The T-shaped bar (231) has a circular cross-section and its vertical part is covered with a rubber layer.

4. The end grinding device according to claim 1, characterized in that, The gripper (331) has an arc-shaped plate (333) on its opposite side.

5. The end grinding device according to claim 1, characterized in that, The grinding assembly (32) also includes a cylinder (321) mounted on the lifting platform (31), the output end of which is connected to the other side of the mounting base (322). The grinding mechanism (323) is equipped with a grinding disc that rotates toward the surface of the turntable (21), and the push plate (324) is vertically connected to the mounting base (322).

6. The end grinding device according to claim 1, characterized in that, A strip groove (317) is provided on both sides along the length of the lifting platform (31), and a slider (326) is provided at the bottom of the mounting base (322). The slider (326) is slidably connected to the corresponding strip groove (317).

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