Welding machine device for grinding wheel cover and using method of welding machine device

Abstract

The invention discloses a welding machine device for a grinding wheel cover and a using method thereof, and relates to the field of grinding wheel cover machining, the welding machine device comprises a base, a mechanical arm, a welding gun, a positioning mechanism, an adjusting mechanism and a limiting mechanism, and the mechanical arm is fixedly installed on one side of the upper surface of the base; the welding gun is fixedly mounted on the mechanical arm; the positioning mechanism is arranged on the other side of the upper surface of the base and used for positioning and mounting the grinding wheel cover; the adjusting mechanism is arranged on the positioning mechanism and used for adjusting the position of the grinding wheel cover; the limiting mechanism is arranged on the positioning mechanism and used for limiting and fixing the adjusting mechanism. According to the grinding wheel cover welding device, the rotating disc rotates, so that the inner walls of the movable grooves extrude the sliding blocks, the movable blocks are driven to slide on the mounting blocks, the multiple movable blocks are shrunk, rotating rollers on the movable blocks extrude the outer wall of a grinding wheel cover, the grinding wheel cover is conveniently positioned, and the grinding wheel cover is conveniently welded.

Description

Technical Field

[0001] The present invention relates to the field of grinding wheel cover processing, and in particular to a welding device for a grinding wheel cover and a use method thereof. Background Art

[0002] The grinding wheel cover is a safety protection device installed on grinding equipment such as grinding machines and angle grinders. It is mainly used to prevent fragments from flying when the grinding wheel breaks, protecting the safety of operators and surrounding equipment.

[0003] During the production process of the grinding wheel cover, the various components need to be welded and fixed to form the grinding wheel cover. The welding operation of the grinding wheel cover is a key process involved in the manufacture of safety protection equipment. During the welding process, the grinding wheel cover to be processed is usually fixed with a fixed tool to ensure the stability of the grinding wheel cover. Due to the different positions of the welding parts of the grinding wheel cover, the position of the grinding wheel cover needs to be adjusted. The common fixed tooling locks the grinding wheel cover, which is not convenient for adjusting the position of the grinding wheel cover and is not convenient for welding the grinding wheel cover. Summary of the Invention

[0004] The object of the present invention is to provide a welding device for a grinding wheel cover and a method of using the same, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a welding device for a grinding wheel cover, comprising:

[0006] base;

[0007] A robotic arm, the robotic arm being fixedly mounted on one side of the upper surface of the base;

[0008] A welding gun, which is fixedly mounted on the robotic arm;

[0009] A positioning mechanism, the positioning mechanism is arranged on the other side of the upper surface of the base, and the positioning mechanism is used to position and install the grinding wheel cover;

[0010] An adjusting mechanism, the adjusting mechanism being arranged on the positioning mechanism and being used to adjust the position of the grinding wheel cover;

[0011] The limiting mechanism is arranged on the positioning mechanism and is used to limit and fix the adjusting mechanism.

[0012] Preferably, the positioning mechanism includes:

[0013] A fixed plate, the fixed plate being arranged above the base;

[0014] Mounting blocks, the mounting blocks being fixedly connected to the front surface of the fixed plate, the mounting blocks being arranged in a circular array at intervals;

[0015] An active block, one end of the active block is slidably inserted into the mounting block, and the active block is arranged in an L shape;

[0016] A groove, the groove is opened at the other end of the active block;

[0017] A rotating roller, the rotating roller is arranged in the groove, and the rotating roller is rotatably connected to the inner wall of the groove through a rotating shaft.

[0018] Preferably, the positioning mechanism further includes:

[0019] A fixing block, the fixing block is fixedly connected to the active block;

[0020] A fastening bolt, the fastening bolt is threadedly connected to the fixing block;

[0021] An extrusion block, the extrusion block is fixedly connected to one end of the fastening bolt;

[0022] A rubber pad, the rubber pad is fixedly connected to the outer wall of the extrusion block.

[0023] Preferably, the adjusting mechanism includes:

[0024] A fixed shaft, one end of the fixed shaft is fixedly connected to the front surface of the fixed disk;

[0025] A support frame, the bottom end of the support frame is fixedly connected to one side of the upper surface of the base, and the top of the support frame is rotatably inserted and connected to the other end of the fixed shaft;

[0026] A driving motor, the driving motor is fixedly installed on the top of the front surface of the support frame, and the output end of the driving motor is in transmission connection with the fixed shaft.

[0027] Preferably, the adjusting mechanism further includes:

[0028] A sliding groove, the sliding groove is opened on the mounting block;

[0029] A sliding block, the sliding block is fixedly connected to the outer wall of one end of the active block, and the sliding block is slidably inserted into the sliding groove;

[0030] A sleeve, the sleeve is rotatably inserted on the fixed shaft;

[0031] A rotating disk, the rotating disk is fixedly connected to the sleeve, and the rotating disk is arranged on the front surface of the mounting block;

[0032] An activity groove, the activity groove is arranged in an annular array on the rotating disk, and the activity groove is slidably inserted and connected with the sliding block.

[0033] Preferably, the limiting mechanism includes:

[0034] A limiting block, which is fixedly connected to the outer wall of a fixed shaft, and the limiting block is arranged in an L shape;

[0035] A limiting rod, which is slidably inserted through the limiting block;

[0036] Limiting holes, which are arranged at equal intervals in a circular array on the outer wall of the sleeve, and one end of the limiting rod is inserted through the limiting holes.

[0037] Preferably, the limiting mechanism further includes:

[0038] A connecting block, which is fixedly connected to the limiting rod, and the connecting block is arranged below the limiting block;

[0039] A compression spring, which is arranged between the connecting block and the limiting block, and the compression spring is movably sleeved on the limiting rod.

[0040] Preferably, a control cabinet is fixedly connected to the upper surface of the base, the control cabinet is connected to the robotic arm and the welding gun, and the control cabinet is connected to the driving motor.

[0041] Preferably, the movable groove is arranged obliquely, and the rotating disc is rotatably connected to the fixed shaft through the sleeve.

[0042] The present invention also provides a use method for a welding device for a grinding wheel cover, including the following specific use steps:

[0043] Step 1: First, place the grinding wheel cover to be welded between multiple movable blocks, and then drive the rotating disc to rotate, so that the inner wall of the movable groove squeezes the sliding block, pushing the sliding block to move vertically in the sliding groove, driving the movable block to slide on the mounting block, contracting the multiple movable blocks, and the rotating rollers on the movable blocks squeeze the outer wall of the grinding wheel cover to position the grinding wheel cover;

[0044] Step 2: Then, rotate and tighten the fastening bolt on the fixed block to drive the extrusion block to move towards the back of the grinding wheel cover. The rubber pad on the extrusion block contacts the outer wall of the grinding wheel cover, and the extrusion block squeezes the back of the grinding wheel cover. The front of the grinding wheel cover is squeezed against the front of the fixed disc to fix the grinding wheel cover by extrusion;

[0045] Step 3: Then, as the rotating disc rotates, drive the sleeve to rotate on the fixed shaft, and utilize the elastic action of the compression spring to push the connecting block and the limiting rod to move, so that one end of the limiting rod slides and penetrates into one of the limiting holes, connecting the rotating disc to the fixed shaft, and enabling the fixed shaft to drive the fixed disc, the rotating disc and the grinding wheel cover to rotate together to adjust the position of the grinding wheel cover.

[0046] The technical effects and advantages of the present invention:

[0047] (1) The present invention utilizes a setting method in which a movable block, a rotating disk, a movable groove, a sliding block, a pressing roller, and a sliding groove cooperate with each other. By placing the grinding wheel cover to be welded between multiple movable blocks, and then driving the rotating disk to rotate, the inner wall of the movable groove squeezes the sliding block, pushing the sliding block to move vertically in the sliding groove, driving the movable block to slide on the mounting block, contracting the multiple movable blocks, and the rotating roller on the movable block squeezes the outer wall of the grinding wheel cover, facilitating the positioning of the grinding wheel cover and facilitating the welding of the grinding wheel cover.

[0048] (2) The present invention utilizes a setting method in which a fixed block, a fastening bolt, a pressing block, and a fixed disk cooperate with each other. By rotating and tightening the fastening bolt on the fixed block, driving the pressing block to move towards the back of the grinding wheel cover, the rubber pad on the pressing block contacts the outer wall of the grinding wheel cover, and using the pressing block to squeeze the back of the grinding wheel cover, and the front of the grinding wheel cover is squeezed against the front of the fixed disk, facilitating the squeezing and fixing of the grinding wheel cover and ensuring the stability of the welding of the grinding wheel cover.

[0049] (3) The present invention utilizes a setting method in which a sleeve, a rotating disk, a limiting rod, a compression spring, and a limiting hole cooperate with each other. As the rotating disk rotates, it drives the sleeve to rotate on the fixed shaft, and using the elastic action of the compression spring, it pushes the connecting block and the limiting rod to move, so that one end of the limiting rod slides and penetrates into one of the limiting holes, connecting the rotating disk to the fixed shaft, enabling the fixed shaft to drive the fixed disk, the rotating disk, and the grinding wheel cover to rotate together, facilitating the adjustment of the position of the grinding wheel cover. Description of the Drawings

[0050] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0051] Figure 2 It is a schematic diagram of the structure at the movable block of the present invention.

[0052] Figure 3 It is a schematic diagram of the structure at the rotating disk of the present invention.

[0053] Figure 4 It is a schematic diagram of the structure at the mounting block of the present invention.

[0054] Figure 5 It is a schematic diagram of the structure at the rotating roller of the present invention.

[0055] Figure 6 It is a schematic diagram of the side structure at the sleeve of the present invention.

[0056] In the figure: 1, base; 2, robotic arm; 3, welding gun; 4, positioning mechanism; 41, fixed disk; 42, mounting block; 43, movable block; 44, rotating roller; 45, fixed block; 46, fastening bolt; 47, extrusion block; 48, rubber pad; 5, adjusting mechanism; 51, fixed shaft; 52, support frame; 53, drive motor; 54, sliding groove; 55, sliding block; 56, sleeve; 57, rotating disk; 58, movable groove; 6, limiting mechanism; 61, limiting block; 62, limiting rod; 63, limiting hole; 64, connecting block; 65, compression spring; 7, control cabinet. Detailed implementation manner

[0057] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0058] The present invention provides a welding device for a grinding wheel cover as Figures 1-6 shown, which includes a base 1, a robotic arm 2, a welding gun 3, a positioning mechanism 4, an adjusting mechanism 5, and a limiting mechanism 6. The base 1 plays a role in fixed installation. The robotic arm 2 is fixedly installed on one side of the upper surface of the base 1. The robotic arm 2 is electrically connected to an external power source through an external first switch. The welding gun 3 is driven to move by the robotic arm 2 to adjust the position of the welding gun 3. The welding gun 3 is fixedly installed on the robotic arm 2. The welding gun 3 is electrically connected to an external power source through an external second switch. The grinding wheel cover is welded by using the welding gun 3. The positioning mechanism 4 is arranged on the other side of the upper surface of the base 1. The positioning mechanism 4 is used for positioning and installing the grinding wheel cover. The position of the grinding wheel cover is limited by the positioning mechanism 4 to ensure that the position of the grinding wheel cover is aligned with the welding gun 3. The adjusting mechanism 5 is arranged on the positioning mechanism 4. The adjusting mechanism 5 is used for adjusting the position of the grinding wheel cover to facilitate welding of the grinding wheel cover. The limiting mechanism 6 is arranged on the positioning mechanism 4. The limiting mechanism 6 is used for limiting and fixing the adjusting mechanism 5. The positioning mechanism 4 and the adjusting mechanism 5 are connected by using the limiting mechanism 6 to facilitate adjustment of the welding position of the grinding wheel cover.

[0059] Specifically, the positioning mechanism 4 includes a fixed disk 41, which is arranged above the base 1 and is used to fixedly install the mounting block 42; the mounting block 42 is fixedly connected to the front of the fixed disk 41, and a plurality of mounting blocks 42 are arranged at intervals in a circular array. The mounting block 42 is used to install the movable block 43; the movable block 43 has one end slidably inserted into the mounting block 42, and the movable block 43 is L-shaped. The movable block 43 slides on the mounting block 42 to change the position of the movable block 43, so that a plurality of movable blocks 43 contract and position the grinding wheel cover; a groove is opened at the other end of the movable block 43, and the groove is used to install the rotating roller 44; the rotating roller 44 is arranged in the groove, and the rotating roller 44 is rotatably connected to the inner wall of the groove through a rotating shaft. The rotating roller 44 is in contact with the outer wall of the grinding wheel cover. By using the rotation of the rotating roller 44, it is convenient for the grinding wheel cover to rotate between a plurality of movable blocks 43 and the rotating roller 44 to adjust the welding position; the fixed block 45 is fixedly connected to the movable block 43, and the fixed block 45 moves together with the movable block 43 and is used to install the fastening bolt 46; the fastening bolt 46 is threadedly connected to the fixed block 45, and the fastening bolt 46 rotates threadedly on the fixed block 45 to drive the extrusion block 47 to move; the extrusion block 47 is fixedly connected to one end of the fastening bolt 46. By rotating the fastening bolt 46, the extrusion block 47 is driven to extrude the back surface of the grinding wheel cover, and the grinding wheel cover between a plurality of movable blocks 43 is extruded and fixed; the rubber pad 48 is fixedly connected to the outer wall of the extrusion block 47, and the extrusion block 47 is in contact with the back surface of the grinding wheel cover through the rubber pad 48. By using the elastic effect of the rubber pad 48, the wear of the grinding wheel cover is reduced.

[0060] Further, the adjusting mechanism 5 includes a fixed shaft 51, one end of the fixed shaft 51 is fixedly connected to the front surface of the fixed disk 41, and the fixed shaft 51 is used for installing the fixed disk 41; a support frame 52, the bottom end of the support frame 52 is fixedly connected to one side of the upper surface of the base 1, and the top of the support frame 52 is rotationally inserted through the other end of the fixed shaft 51. The fixed disk 41 is rotationally connected to the support frame 52 through the fixed shaft 51, so that the fixed disk 41 rotates around the fixed shaft 51; a driving motor 53, the driving motor 53 is fixedly installed at the top of the front surface of the support frame 52, the output end of the driving motor 53 is in transmission connection with the fixed shaft 51, and the driving motor 53 is electrically connected to an external power supply through an externally connected third switch. By operating the driving motor 53, the fixed disk 41 is driven to rotate; a sliding groove 54, the sliding groove 54 is opened on the mounting block 42, and the sliding groove 54 is arranged on the front surface of the mounting block 42 for installing a sliding block 55; a sliding block 55, the sliding block 55 is fixedly connected to the outer wall of one end of the movable block 43, the sliding block 55 is slidably inserted through the sliding groove 54, and the sliding block 55 is used for driving the movable block 43 to move; a sleeve 56, the sleeve 56 is rotationally inserted through the fixed shaft 51, and the sleeve 56 is used for installing a rotating disk 57; a rotating disk 57, the rotating disk 57 is fixedly connected to the sleeve 56, the rotating disk 57 is arranged on the front surface of the mounting block 42, and the rotating disk 57 rotates on the fixed shaft 51 through the sleeve 56; a movable groove 58, the movable groove 58 is arranged in an annular array on the rotating disk 57, and the movable groove 58 is slidably inserted through the sliding block 55. By rotating the rotating disk 57 around the fixed shaft 51, the movable groove 58 rotates together with the rotating disk 57, and the inner wall of the movable groove 58 squeezes and pushes the sliding block 55, so that the sliding block 55 moves vertically along the sliding groove 54, driving a plurality of movable blocks 43 to slide on the mounting block 42, and positioning the grinding wheel cover by using the plurality of movable blocks 43.

[0061] Furthermore, the limiting mechanism 6 includes a limiting block 61 which is fixedly connected to the outer wall of the fixed shaft 51. The limiting block 61 is arranged in an L shape and is disposed at one end of the sleeve 56 for limiting the sleeve 56 and the rotating disk 57 to ensure the stability of the rotating disk 57, and the limiting block 61 is used for installing the limiting rod 62; a limiting rod 62 which is slidably inserted through the limiting block 61 and slides on the limiting block 61 for limiting and fixing the sleeve 56; a limiting hole 63 which is arranged in an annular array at equal intervals on the outer wall of the sleeve 56, and one end of the limiting rod 62 is inserted through the limiting hole 63. A plurality of limiting holes 63 are arranged at equal intervals around the outer wall of the sleeve 56 corresponding to the position of the limiting rod 62. By sliding one end of the limiting rod 62 into the corresponding limiting hole 63, the sleeve 56 and the rotating disk 57 are limited, and the rotating disk 57 is connected to the fixed shaft 51 so that the fixed shaft 51 drives the rotating disk 57 to rotate together; a connecting block 64 which is fixedly connected to the limiting rod 62 and is disposed below the limiting block 61. The connecting block 64 moves together with the limiting rod 62 for extruding and deforming the compression spring 65; a compression spring 65 which is disposed between the connecting block 64 and the limiting block 61 and is movably sleeved on the limiting rod 62. By using the elastic action of the compression spring 65, the connecting block 64 and the limiting rod 62 are pushed to ensure the stability of the limiting rod 62.

[0062] A control cabinet 7 is fixedly connected to the upper surface of the base 1. The control cabinet 7 is connected to the robotic arm 2 and the welding gun 3, and the control cabinet 7 is connected to the drive motor 53. The control cabinet 7 is used for controlling and adjusting the operation of the robotic arm 2, the welding gun 3 and the drive motor 53. The movable groove 58 is arranged obliquely. The rotating disk 57 is rotatably connected to the fixed shaft 51 through the sleeve 56. The rotating disk 57 drives the movable groove 58 to rotate, and the movable groove 58 is used for extruding and pushing the sliding block 55.

[0063] Usage method of the present invention:

[0064] First, place the grinding wheel cover to be welded between a plurality of movable blocks 43, and then drive the rotating disk 57 to rotate, so that the inner wall of the movable groove 58 squeezes the sliding block 55, pushing the sliding block 55 to move vertically in the sliding groove 54, driving the movable block 43 to slide on the mounting block 42, contracting a plurality of movable blocks 43, and the rotating rollers 44 on the movable blocks 43 squeeze the outer wall of the grinding wheel cover, facilitating the positioning of the grinding wheel cover and facilitating the welding of the grinding wheel cover;

[0065] Next, by rotating and tightening the fastening bolt 46 on the fixed block 45, the pressing block 47 is driven to move towards the back of the grinding wheel cover. The rubber pad 48 on the pressing block 47 contacts the outer wall of the grinding wheel cover. By pressing the back of the grinding wheel cover with the pressing block 47, the front of the grinding wheel cover is pressed against the front of the fixed disk 41, facilitating the pressing and fixing of the grinding wheel cover and ensuring the stability of the welding of the grinding wheel cover.

[0066] Then, with the rotation of the rotating disk 57, the sleeve 56 is driven to rotate on the fixed shaft 51. And by the elastic action of the compression spring 65, the connecting block 64 and the limiting rod 62 are pushed to move, so that one end of the limiting rod 62 slides and penetrates into one of the limiting holes 63, connecting the rotating disk 57 with the fixed shaft 51, and enabling the fixed shaft 51 to drive the fixed disk 41, the rotating disk 57 and the grinding wheel cover to rotate together, facilitating the adjustment of the position of the grinding wheel cover.

[0067] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A welding machine device for a grinding wheel cover, characterized in that, Comprising; Base (1); Robot arm (2), the robot arm (2) is fixedly installed on one side of the upper surface of the base (1); Welding gun (3), the welding gun (3) is fixedly installed on the robot arm (2); Positioning mechanism (4), the positioning mechanism (4) is arranged on the other side of the upper surface of the base (1), and the positioning mechanism (4) is used for positioning and installing the grinding wheel cover; Adjusting mechanism (5), the adjusting mechanism (5) is arranged on the positioning mechanism (4), and the adjusting mechanism (5) is used for adjusting the position of the grinding wheel cover; Limiting mechanism (6), the limiting mechanism (6) is arranged on the positioning mechanism (4), and the limiting mechanism (6) is used for limiting and fixing the adjusting mechanism (5).

2. The welding machine device for a grinding wheel cover according to claim 1, wherein, The positioning mechanism (4) includes: Fixed disk (41), the fixed disk (41) is arranged above the base (1); Mounting block (42), the mounting block (42) is fixedly connected to the front of the fixed disk (41), and the mounting blocks (42) are arranged at intervals in a circular array; Movable block (43), one end of the movable block (43) is slidably inserted into the mounting block (42), and the movable block (43) is arranged in an L shape; Groove, the groove is opened at the other end of the movable block (43); Rotating roller (44), the rotating roller (44) is arranged in the groove, and the rotating roller (44) is rotatably connected to the inner wall of the groove through a rotating shaft.

3. The welding machine device for a grinding wheel cover according to claim 2, characterized in that, The positioning mechanism (4) further includes: Fixed block (45), the fixed block (45) is fixedly connected to the movable block (43); Tightening bolt (46), the tightening bolt (46) is threadedly connected to the fixed block (45); Extrusion block (47), the extrusion block (47) is fixedly connected to one end of the tightening bolt (46); Rubber pad (48), the rubber pad (48) is fixedly connected to the outer wall of the extrusion block (47).

4. A welding machine device for a grinding wheel cover according to claim 3, characterized in that, The adjusting mechanism (5) includes: Fixed shaft (51), one end of the fixed shaft (51) is fixedly connected to the front of the fixed disk (41); Support frame (52), the bottom end of the support frame (52) is fixedly connected to one side of the upper surface of the base (1), and the top of the support frame (52) is rotatably inserted and connected to the other end of the fixed shaft (51); Drive motor (53), the drive motor (53) is fixedly installed on the top of the front of the support frame (52), and the output end of the drive motor (53) is in transmission connection with the fixed shaft (51).

5. The welding machine device for a grinding wheel cover according to claim 4, characterized in that, The adjusting mechanism (5) further includes: Sliding groove (54), the sliding groove (54) is opened on the mounting block (42); Sliding block (55), the sliding block (55) is fixedly connected to the outer wall of one end of the movable block (43), and the sliding block (55) is slidably inserted into the sliding groove (54); Sleeve (56), the sleeve (56) is rotatably inserted on the fixed shaft (51); Rotating disk (57), the rotating disk (57) is fixedly connected to the sleeve (56), and the rotating disk (57) is arranged on the front of the mounting block (42); The movable slots (58) are arranged in an annular array on the rotating disk (57), and the movable slots (58) are slidably inserted and connected with the sliding blocks (55).

6. The welding machine device for a grinding wheel guard according to claim 5, characterized in that, The limiting mechanism (6) includes: A limiting block (61) fixedly connected to the outer wall of the fixed shaft (51), and the limiting block (61) is arranged in an L shape; A limiting rod (62) slidably inserted on the limiting block (61); Limiting holes (63) are arranged in an annular array at equal intervals on the outer wall of the sleeve (56), and one end of the limiting rod (62) is inserted through the limiting holes (63).

7. The welding machine device for a grinding wheel guard according to claim 6, wherein, The limiting mechanism (6) further includes: A connecting block (64) fixedly connected to the limiting rod (62), and the connecting block (64) is arranged below the limiting block (61); A compression spring (65) arranged between the connecting block (64) and the limiting block (61), and the compression spring (65) is movably sleeved on the limiting rod (62).

8. A welding machine device for a grinding wheel guard according to claim 3, characterized in that, A control cabinet (7) is fixedly connected to the upper surface of the base (1). The control cabinet (7) is connected to the robotic arm (2) and the welding gun (3), and the control cabinet (7) is connected to the drive motor (53).

9. A welding device for a grinding wheel cover according to claim 5, characterized in that, The movable slots (58) are arranged obliquely, and the rotating disk (57) is rotatably connected to the fixed shaft (51) through the sleeve (56).

10. A method for using a welding machine device for a grinding wheel cover, characterized in that, Using a welding device for a grinding wheel cover according to any one of claims 1-9, comprising the following specific use steps: Step 1: First, place the grinding wheel cover to be welded between multiple movable blocks (43), and then drive the rotating disk (57) to rotate, so that the inner wall of the movable slot (58) presses against the sliding block (55), pushing the sliding block (55) to move vertically in the sliding slot (54), driving the movable block (43) to slide on the mounting block (42), contracting the multiple movable blocks (43), and the rotating rollers (44) on the movable blocks (43) press against the outer wall of the grinding wheel cover to position the grinding wheel cover; Step 2: Then, rotate and tighten the fastening bolts (46) on the fixed block (45), driving the pressing block (47) to move towards the back of the grinding wheel cover. The rubber pad (48) on the pressing block (47) contacts the outer wall of the grinding wheel cover, and the pressing block (47) presses against the back of the grinding wheel cover. The front of the grinding wheel cover is pressed against the front of the fixed disk (41) to press and fix the grinding wheel cover; Step 3: Then, as the rotating disk (57) rotates, drive the sleeve (56) to rotate on the fixed shaft (51), and utilize the elastic action of the compression spring (65) to push the connecting block (64) and the limiting rod (62) to move, so that one end of the limiting rod (62) slides and is inserted into one of the limiting holes (63) to connect the rotating disk (57) to the fixed shaft (51), enabling the fixed shaft (51) to drive the fixed disk (41), the rotating disk (57) and the grinding wheel cover to rotate together to adjust the position of the grinding wheel cover.

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