A kind of welding equipment for grinding wheel protective cover production

Abstract

The present application relates to welding related technical field, disclose a kind of grinding wheel protective cover production welding equipment, including longitudinal movement welding part and horizontal feeding part, horizontal feeding part includes oppositely arranged support part one and support part two, rotatable central shaft is arranged between support part one and support part two, multiple support discs are sleeved on the central shaft, floating tensioning part is arranged between adjacent support discs, floating tensioning part includes flexible support part and locking part, flexible support part is sleeved on the outside of central shaft and is at the inside of arc piece, flexible support part includes multiple axially spaced sliding rings, radially protruding inverted "V" shape elastic frame is fixedly arranged between adjacent sliding rings, inverted V structure converts axial pressure into radial thrust, significantly improves cantilever structure rigidity, movable cone barrel synchronously pushes locking claw radially inwards, so that open-loop hoop elastically fits the surface of arc piece, inside and outside synchronous compression gap, reduce the influence of welding thermal deformation.

Description

Technical Field

[0001] This invention belongs to the technical field of welding equipment, and more specifically, relates to a welding equipment for producing grinding wheel protective covers. Background Technology

[0002] The grinding wheel protective cover consists of two parts: a fan-shaped cover body and an open-ring clamp welded to the axis of the cover body. The cover body has an arc-shaped piece in the axial direction that provides welding points. The open-ring clamp is fitted onto the arc-shaped piece, and the two are welded together and fixed using a welding torch.

[0003] Currently, the welding of the open-ring clamp and the arc-shaped plate in the manufacturing process of grinding wheel covers faces three major technical bottlenecks:

[0004] 1. Rigidity defect: The arc-shaped piece is a cantilevered arc structure, which is prone to deformation under high welding temperature, causing the open ring hoop to deviate from the preset position;

[0005] 2. Uneven pressure: The uneven amount of local compression and shrinkage at the circumferential welding points causes differences in the bonding force of the welding points, resulting in large fluctuations in the quality of mass production.

[0006] 3. Uncontrolled thermal deformation: The high temperature of welding aggravates the change in the gap between the open ring hoop and the arc-shaped plate, and the traditional fixed support cannot compensate for the thermal expansion and contraction effect in a synchronous manner.

[0007] Existing technologies lack a dynamic support mechanism for the welding process from both inside and outside, making it difficult to balance positioning accuracy and welding consistency.

[0008] In view of this, we have studied and improved the existing structure and its shortcomings, and provided a welding equipment for the production of grinding wheel protective covers, in order to achieve a more practical purpose. Summary of the Invention

[0009] This invention provides a welding device for producing grinding wheel protective covers, which overcomes the above-mentioned defects in the prior art.

[0010] The purpose and effectiveness of the welding equipment for producing grinding wheel protective covers of the present invention are achieved by the following specific technical means: A welding equipment for producing grinding wheel protective covers includes a longitudinally moving welding section and a transverse feeding section. The transverse feeding section includes a support section one and a support section two arranged opposite to each other. A rotatable central shaft is arranged between the support section one and the support section two. Multiple support discs are sleeved on the central shaft. A floating tensioning section is arranged between adjacent support discs. The protective cover is sleeved on the central shaft and is located between the support discs and the floating tensioning section. The floating tensioning section includes a flexible support section and a locking section. The flexible support section is sleeved outside the central shaft and is located inside the arc-shaped piece. The inner diameter of the locking section is larger than the outer diameter of the open-loop hoop, and the locking section is sleeved outside the open-loop hoop for... Radial compressive force is applied to the open-ring hoop. The flexible support part includes multiple axially spaced sliding rings. A radially protruding inverted "V"-shaped elastic frame is fixed between adjacent sliding rings. A support block is fixed at the tip of the elastic frame. A movable cone is fixed to the sliding ring on the end side. The locking part includes a shell sleeved outside the central shaft and an adjusting cylinder fixed to the movable cone. The inner side of the adjusting cylinder has an inner conical surface. Multiple locking claws arranged circumferentially are also provided on the inner side of the inner conical surface. Guide bolts are provided between the locking claws and the inner wall of the shell to realize the radial sliding of the locking claws. The second support part and the first support part can approach each other to compress the shell towards the grinding wheel cover and make the flexible support part and the locking part lock the open-ring hoop synchronously.

[0011] A further technical solution includes a base for the transverse feeding section. A slide rail is provided on one side of the base. A second motor is slidably mounted on the slide rail. A support part is fixedly mounted on the upper side of the second motor. A gear is provided at the shaft end of the second motor. A central shaft is rotatably mounted inside the support part. A gear is fixedly mounted at the end of the central shaft. The gear meshes with the gear.

[0012] A further technical solution includes a second slide rail in the transverse feeding section. The second slide rail is spaced apart from the first slide rail, and a first motor is transversely slidably mounted on the first slide rail. A second support is fixedly mounted on the upper side of the first motor. One end of the central shaft passes through the second support and rotates within the second support. A threaded rod is fixedly mounted on the shaft end of the first motor. A central frame is mounted between the first slide rail and the second slide rail. The lower end of the central frame is fixedly connected to the base. The upper end of the central frame has a transverse threaded hole, and the threaded rod is threadedly connected within the threaded hole.

[0013] In a further technical solution, a locking part is provided on the opposite side of the second support part and the first support part. The locking part includes a locking ring and a connecting ring that are coaxial and fixedly connected to each other. The connecting ring is rotatably connected to the second support part or the first support part. The connecting ring has a through hole 1 through which the central shaft can pass through in the center. The second support part has a through hole 2 through which the central shaft can pass through in the center. The locking ring has a threaded hole 2 in the center. The central shaft is threadedly connected to the threaded hole 2.

[0014] A further technical solution includes a longitudinally movable welding section comprising a longitudinal frame fixed on a base, a longitudinal slide rail provided on the longitudinal frame, a welding unit slidably mounted on the longitudinal slide rail, and an electric telescopic rod fixedly mounted on the longitudinal frame, the electric telescopic rod driving the welding unit to move longitudinally.

[0015] A further technical solution is that the welding unit has two sets arranged laterally at intervals, and the spacing between the two sets of welding units is consistent with the spacing between the two sets of grinding wheel covers on the lower side.

[0016] A further technical solution includes a welding unit comprising a mounting plate, which is fixed to a slider on a longitudinal slide rail. The mounting plate is rotated via a rotating shaft to set a rotating plate. A connecting frame is provided at one end of the rotating plate, which holds the welding head. An arc-shaped groove is provided on the rotating plate, and a positioning threaded hole is provided on the mounting plate. A positioning bolt passes through the arc-shaped groove and is locked in the positioning threaded hole to lock the angle of the rotating plate.

[0017] A further technical solution involves fixing two limiting shafts on the side of the support plate, which limit the rotation angle of the grinding wheel cover. A second limiting shaft is also fixed on the side of the support plate, which limits the rotation angle of the open ring hoop.

[0018] A further technical solution involves a liquid-passing shaft at the center of the central shaft, forming a gas channel between the central shaft and the liquid-passing shaft for gas passage, a liquid channel within the liquid-passing shaft for liquid passage, several heat dissipation holes on the side wall of the central shaft, an arc-shaped plate fitted around the central shaft to form a support gap, a flexible support part located within the support gap, and heat dissipation holes connected to the support gap.

[0019] A further technical solution involves an axially sliding movable body inside the outer casing, with a spring between the movable body and the movable cone, and a distance detector between the movable body and the movable cone. The movable body is fitted around the central shaft, forming a hydraulic control cavity between the movable body and the central shaft. A piston ring is slidably installed in the hydraulic control cavity, and a movable ring is installed on the side of the movable body away from the movable cone. The movable ring and the piston ring are fixedly connected by a sliding cylinder. A second hole is opened in the wall of the central shaft, which communicates with the hydraulic control cavity. The portion of the liquid-conducting shaft located in the hydraulic control cavity extends radially to form a fan-shaped protrusion, and a first hole is opened on the fan-shaped protrusion, which connects the liquid channel and the second hole.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This invention incorporates a floating tensioning section, which simultaneously strengthens the internal support of the arc-shaped plate and provides radial compensation for the open-ring hoop. The movable cone in the floating tensioning section is compressed, driving the elastic frame to contract. The inverted V-shaped structure converts axial pressure into radial thrust, significantly improving the rigidity of the cantilever structure. The movable cone simultaneously pushes the locking claw radially inward, causing the open-ring hoop to elastically conform to the surface of the arc-shaped plate, compressing the gap synchronously inside and out, and reducing the impact of welding thermal deformation.

[0022] This invention achieves automatic control of radial stress collapse at the welding point by setting a flexible support. The radial collapse displacement of the open-ring hoop is transmitted to multiple sets of sliding rings through an elastic frame. The elastic frame realizes a superposition effect of multiple sets, transforming the radial micro-displacement into an axial amplified displacement. Combined with a distance detector, it achieves high-precision monitoring of the collapse amount. In addition, the hydraulic system controls the distance between the moving body and the moving cone by adjusting the position of the piston ring, and corrects the axial pressure of the spring on the moving cone in real time, so that the extrusion pressure of each welding point automatically returns to the set threshold.

[0023] The porous structure of the elastic frame guides airflow through gas channels, heat dissipation holes, and support gaps, directionally cooling the high-temperature welding zone. The heat dissipation airflow suppresses local temperature rise, reduces gap fluctuations caused by thermal expansion, and ensures that the deformation during the welding process remains within a reasonable range. In addition, the support plate, grinding wheel cover, open ring hoop, and floating tensioning part are pre-assembled as modular units and stacked axially, which improves the one-time positioning efficiency and welding efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the grinding wheel cover 25 mounted on the support plate 26 in this invention;

[0026] Figure 3 This is a schematic diagram of the structure of the floating tensioning part 24 and the open ring hoop 27 in this invention;

[0027] Figure 4 yes Figure 3 A partially enlarged structural diagram of the floating tension section at point 24;

[0028] Figure 5 yes Figure 3 Enlarged structural schematic diagram of the flexible support section 40;

[0029] Figure 6 This is a three-dimensional structural schematic diagram of the flexible support part 40 in this invention;

[0030] Figure 7 This is a three-dimensional structural schematic diagram of the floating tensioning part 24 in this invention;

[0031] Figure 8 This is an exploded view of the floating tensioning part 24 in this invention;

[0032] Figure 9 This is a schematic diagram of the locking part 23 in this invention;

[0033] Figure 10 This is a schematic diagram of the welding unit 13 in this invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 10. Base, 11. Longitudinal frame, 12. Electric telescopic rod, 13. Welding unit, 14. First motor, 15. Threaded rod, 16. Central frame, 17. Slide rail II, 18. Slide rail I, 19. Support part II, 20. Support part I, 21. Gear II, 22. Second motor, 23. Locking part, 24. Floating tensioning part, 25. Grinding wheel cover, 26. Support plate, 27. Open ring clamp, 28. Arc-shaped piece, 29. Outer shell, 30. Moving body, 31. Moving ring, 33. Central shaft, 34. Liquid passage shaft, 35. Gas channel, 36. Liquid channel, 37. First hole, 38. Second hole 39 Support gap, 40 Flexible support part, 41 Sliding ring, 42 Support block, 43 Elastic frame, 44 Movable cone, 45 Adjusting cylinder, 46 Inner cone surface, 47 Locking claw, 48 Guide bolt, 49 Heat dissipation hole, 50 Hydraulic control cavity, 51 Piston ring, 52 Guide hole, 53 Outer cone surface, 54 Anti-slip part, 55 Sliding cylinder, 56 Limiting shaft one, 57 Limiting shaft two, 58 Connecting ring, 59 Locking ring, 60 Mounting plate, 61 Rotating plate, 62 Rotating shaft, 63 Arc groove, 64 Positioning bolt, 65 Connecting frame, 66 Welding head. Detailed Implementation

[0036] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0037] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] like Figures 1-10As shown, a welding device for producing a grinding wheel protective cover includes a longitudinally moving welding section and a transverse feeding section. The transverse feeding section includes a first support section 20 and a second support section 19 arranged opposite to each other. A rotatable central shaft 33 is arranged between the first support section 20 and the second support section 19. Multiple support discs 26 are fitted on the central shaft 33. A floating tensioning section 24 is arranged between adjacent support discs 26. The protective cover is fitted on the central shaft 33 and is located between the support discs 26 and the floating tensioning section 24. The floating tensioning section 24 includes a flexible support section 40 and a locking section. The flexible support section 40 is fitted outside the central shaft 33 and is located inside the arc-shaped piece 28. The inner diameter of the locking section is larger than the outer diameter of the open-loop hoop 27, and the locking section is fitted outside the open-loop hoop 27 to apply radial extrusion force to the open-loop hoop 27. The flexible support section 40 includes multiple pieces of... Axially spaced sliding rings 41 are provided, and radially protruding inverted "V"-shaped elastic frames 43 are fixedly provided between adjacent sliding rings 41. A support block 42 is fixedly provided at the tip of the elastic frame 43. A movable cone 44 is fixedly provided on the end side of the sliding rings 41. The locking part includes a housing 29 sleeved on the outside of the central shaft 33 and an adjusting cylinder 45 fixed on the movable cone 44. The inner side of the adjusting cylinder 45 has an inner cone surface 46. A plurality of locking claws 47 arranged circumferentially are also provided on the inner side of the inner cone surface 46. A guide bolt 48 is provided between the locking claws 47 and the inner wall of the housing 29 to realize the radial sliding of the locking claws 47. The second support part 19 and the first support part 20 can approach each other to squeeze the housing 29 to move toward the grinding wheel cover 25 and make the flexible support part 40 and the locking part lock the opening hoop 27 simultaneously.

[0040] It should be noted that the structure of the grinding wheel cover to be welded in this application includes a grinding wheel outer cover 25 and an open ring hoop 27. The grinding wheel outer cover 25 has a fan-shaped structure with an open opening on one side and an arc-shaped piece 28 at the center of the other side. The open ring hoop 27 is movably fitted onto the arc-shaped piece 28. During welding, the longitudinally moving welding part has a welding torch that can extend longitudinally. The welding torch extends downward and contacts the side surface of the open ring hoop 27 to fix the open ring hoop 27 and the arc-shaped piece 28 together. The movable cone 44 is subjected to radial pressure to compress the elastic frame 43 to change the opening angle of the elastic frame 43, thereby changing the axial length of the flexible support part 40.

[0041] In this embodiment, the side wall of the housing 29 is provided with circumferentially distributed guide holes 52. The end of the guide bolt 48 passes through the housing 29 and slides radially inside the housing 29. The guide bolt 48 is also fitted with a return spring. The end of the guide bolt 48 is threadedly fixed to the locking claw 47. The return spring is used to push the guide bolt 48 and the locking claw 47 to move radially outward.

[0042] The outer wall surface of the locking claw 47 is an outer conical surface 53, which matches the inner conical surface 46. The inner wall surface of the locking claw 47 protrudes to form an anti-slip part 54 that abuts against the open ring 27.

[0043] Preferably, the transverse feeding part further includes a base 10, a slide rail 18 is provided on one side of the base 10, a second motor 22 is transversely slidably arranged on the slide rail 18, a support part 20 is fixedly arranged on the upper side of the second motor 22, a gear is provided at the shaft end of the second motor 22, a central shaft 33 is transversely rotatably arranged inside the support part 20, and a gear 21 is fixedly arranged at the end of the central shaft 33, and the gear 21 meshes with the gear 1.

[0044] Preferably, the transverse feeding section further includes a second slide rail 17, which is spaced apart from the first slide rail 18. A first motor 14 is transversely slidably mounted on the first slide rail 18. A second support part 19 is fixedly mounted on the upper side of the first motor 14. One end of the central shaft 33 passes through the second support part 19 and rotates within the second support part 19. A threaded rod 15 is fixedly mounted on the shaft end of the first motor 14. A central frame 16 is provided between the first slide rail 18 and the second slide rail 17. The lower end of the central frame 16 is fixedly connected to the base 10. The upper end of the central frame 16 has a transverse threaded hole 1, and the threaded rod 15 is threadedly connected within the threaded hole 1.

[0045] In this embodiment, the second motor 22 is energized, driving the second gear 21 via the first gear, which in turn drives the central shaft 33 to rotate. This, in turn, drives the rotation of several horizontally arranged grinding wheel covers, which, in conjunction with the longitudinally moving welding part, enables circumferential welding of a portion of the grinding wheel covers. During the rotation of the second motor 22, the position of the grinding wheel covers needs to be adjusted laterally. During this process, the first motor 14 is energized, driving the threaded rod 15 to rotate. Due to the restriction of the central frame 16, the first motor 14 can move laterally on the second slide rail 17, thereby achieving lateral displacement adjustment through the second support part 19, which drives the movable body 30, the second gear 21, and the second motor 22.

[0046] Preferably, a locking part 23 is provided on the opposite side of the second support part 19 and the first support part 20. The locking part 23 includes a locking ring 59 and a connecting ring 58 that are coaxial and fixedly connected to each other. The connecting ring 58 is rotatably connected to the second support part 19 or the first support part 20. The connecting ring 58 has a through hole 1 through which the central shaft 33 can pass. The second support part 19 has a through hole 2 through which the central shaft 33 can pass. The locking ring 59 has a threaded hole 2 in the center. The central shaft 33 is threadedly connected to the threaded hole 2.

[0047] In this embodiment, rotating the locking ring 59 around the central axis 33 can adjust the axial displacement of the locking ring 59 relative to the central axis 33. Rotating the locking ring 59 on both sides can adjust the distance between the two locking parts 23, thereby achieving the purpose of initially locking several grinding wheel covers.

[0048] Preferably, the longitudinally movable welding section includes a longitudinal frame 11 fixed on the base 10, a longitudinal slide rail is provided on the longitudinal frame 11, a welding unit 13 is longitudinally slidably arranged on the longitudinal slide rail, and an electric telescopic rod 12 is also fixedly arranged on the longitudinal frame 11, the electric telescopic rod 12 driving the welding unit 13 to move longitudinally.

[0049] Preferably, the welding unit 13 has two sets arranged laterally at intervals, and the spacing between the two sets of welding units 13 is consistent with the spacing between the two sets of grinding wheel covers on the lower side.

[0050] In this embodiment, the two welding units 13 work simultaneously, which can improve welding efficiency. In addition, in order to reduce the deformation of the thin sheet structure caused by local high temperature, when the second motor 22 controls the central shaft 33 to rotate, an interval welding strategy is adopted. For example, there are four circumferentially distributed welding points, which are A, B, C, and D in a clockwise direction. The welding sequence is A, C, B, and D, which disperses the heat points to facilitate internal heat dissipation and reduce heat accumulation.

[0051] Preferably, the welding unit 13 includes a mounting plate 60, which is fixed to the slider of the longitudinal slide rail. The mounting plate 60 is rotatably mounted on a rotating plate 61 via a rotating shaft 62. A connecting frame 65 is provided at one end of the rotating plate 61, which holds the welding head 66. The rotating plate 61 has an arc-shaped groove 63. The mounting plate 60 has a positioning threaded hole, and a positioning bolt 64 passes through the arc-shaped groove 63 and locks in the positioning threaded hole, thus locking the angle of the rotating plate 61.

[0052] Preferably, two limiting shafts 56 are fixedly provided on the side of the support plate 26, limiting the rotation angle of the grinding wheel cover 25. A second limiting shaft 57 is also fixedly provided on the side of the support plate 26, limiting the rotation angle of the open ring hoop 27.

[0053] Preferably, a liquid-passing shaft 34 is provided at the center of the central shaft 33, and a gas channel 35 for gas passage is formed between the central shaft 33 and the liquid-passing shaft 34. The liquid-passing shaft 34 has a liquid channel 36 for liquid passage. Several heat dissipation holes 49 are opened on the side wall of the central shaft 33. An arc-shaped plate 28 is fitted outside the central shaft 33 and forms a support gap 39. The flexible support part 40 is located in the support gap 39, and the heat dissipation holes 49 are connected to the support gap 39.

[0054] In this embodiment, the device is also provided with a pump body connected to the liquid channel 36 for replenishing or extracting liquid into the liquid channel 36. The liquid has a dual function: first, to cool the air in the gas channel 35 and absorb heat at the welding point; second, to serve as a medium for force transmission and to control the lateral displacement of the moving body 30 within the outer casing 29.

[0055] Preferably, a movable body 30 is axially slidably disposed inside the outer casing 29. A spring is disposed between the movable body 30 and the movable cone 44, and a distance detector is also disposed between the movable body 30 and the movable cone 44. The movable body 30 is sleeved on the outside of the central shaft 33, and a hydraulic control cavity 50 is formed between the movable body 30 and the central shaft 33. A piston ring 51 is slidably disposed in the hydraulic control cavity 50. A movable ring 31 is disposed on the side of the movable body 30 away from the movable cone 44. The movable ring 31 and the piston ring 51 are fixedly connected by a sliding cylinder 55. A second hole 38 is opened in the wall of the central shaft 33, and the second hole 38 communicates with the hydraulic control cavity 50. The portion of the liquid-conducting shaft 34 located in the hydraulic control cavity 50 extends radially to form a fan-shaped protrusion, and a first hole 37 is opened on the fan-shaped protrusion. The first hole 37 connects the liquid channel 36 and the second hole 38.

[0056] Specifically, the distance detector can be an infrared detector.

[0057] The operating steps of this device are as follows:

[0058] 1. Batch installation of grinding wheel covers: The specific process is as follows: By default, support part 2 19 and support part 1 20 are far apart from each other, so that the right end of the central shaft 33 is separated from one end of support part 2 19. This makes it convenient for the operator to fit the support plate 26, grinding wheel cover 25, open ring clamp 27 and floating tensioning part 24 as a unit onto the central shaft 33. Multiple of the above units are fitted laterally onto the central shaft 33. By rotating the locking part 23, the locking parts 23 at both ends approach each other under the action of the threaded engagement, and the multiple units are axially tightly abutted to complete the locking action.

[0059] 2. Start the second motor 22. With the meshing of the gears, the second gear 21 rotates to drive the central shaft 33 to rotate. The central shaft 33 drives several units on it to rotate synchronously. The electric telescopic rod 12 drives the welding unit 13 to move downward to complete the circumferential welding action of the split ring hoop 27.

[0060] 3. Due to the gap between the open-ring clamp 27 and the arc-shaped piece 28, and the fact that the arc-shaped piece 28 itself is an arc-shaped cantilever structure with insufficient rigidity, a certain compressive force is generated at the welding point, accompanied by high temperature. Therefore, the welding effect between the open-ring clamp 27 and the arc-shaped piece 28 is not ideal, which will cause the open-ring clamp 27 to deviate from the preset posture. In order to enhance the consistency of welding quality and improve the quality of mass production, this application sets a floating tensioning part 24 to provide internal and external synchronous controllable support force for the welding process of the arc-shaped piece 28 and the open-ring clamp 27. The specific process is as follows:

[0061] On the one hand, as the locking parts 23 at both ends approach each other and initially lock the multiple units mentioned above, the movable body 30 is subjected to axial compression. The movable body 30 transmits the compression force to the movable cone 44 through the spring. The movable cone 44 transmits the axial pressure to the elastic frame 43. The two legs of the elastic frame 43 are compressed, and the angle of its inverted V-shaped structure decreases, thereby providing radial thrust to the support block 42, causing the support block 42 to move radially to support the arc-shaped piece 28, thereby providing good support for the cantilever structure. The elastic frame 43 fills the support gap 39 and has a large number of gaps, which facilitates the flow of air from the gas channel 35 and the heat dissipation hole 49 into the support gap 39, and cools down the local high temperature area, thereby reducing the drastic changes in the gap caused by high temperature. Furthermore, when the welding head 66 presses downward against the open ring clamp 27, it causes radial collapse at the stress point of the open ring clamp 27. In order to keep the radial collapse of multiple circumferential welding points approximately the same and to keep the bonding force of multiple circumferential welding points similar, when radial collapse occurs, radial movement is transmitted to the support block 42. The support block 42 transmits the movement to the sliding ring 41 through the elastic frame 43, and the distance between adjacent sliding rings 41 increases. The radial movement of a single elastic frame 43 is transferred to the interval increment of a pair of sliding rings 41. The radial movement of multiple elastic frames 43 generates the superposition of axial displacement through the above process, realizing the amplification of radial displacement to axial displacement. By setting a distance detector to detect the amplified displacement, the detection accuracy of the weld point collapse is improved. In conjunction with this, the liquid channel 36 has a flow... The fluid is used to control the distance of the piston ring 51 in the hydraulic control chamber 50. Since the lateral position of the movable ring 31 is restricted by the adjacent support plate 26, the movable body 30 will move passively in the outer shell 29, thereby controlling the distance between the movable body 30 and the movable cone 44, and thus controlling the compression of the spring between them. That is, when the extrusion pressure on the welding point at a certain position exceeds the preset value, the axial pressure of the spring on the movable cone 44 is reduced by hydraulic control, thereby reducing the radial support force of the support block 42 on the arc plate 28, so that the extrusion pressure at the welding point is restored to the set value range, and vice versa. In this way, the extrusion pressure of multiple axially distributed welding points is maintained in a relatively average range, and the problem of inconsistent collapse of different welding points is overcome by adaptive adjustment of the internal support force.

[0062] On the other hand, under hydraulic control, the movable body 30 moves closer to the movable cone 44. Under the spring thrust, the movable cone 44 drives the adjusting cylinder 45 to move. The inner cone surface 46 cooperates with the outer cone surface 53. Under the guidance of the guide bolt 48, the locking claw 47 can move radially inward, thereby compressing the open ring hoop 27 and making the open ring hoop 27 fit with the arc-shaped piece 28. The axial movement of the movable cone 44 is converted into the radial movement of the support block 42 and the locking claw 47. The support block 42 and the locking claw 47 move synchronously to compress the gap between the open ring hoop 27 and the arc-shaped piece 28. The rigidity of the arc-shaped piece 28 is improved, making it less prone to deformation. Under the abutment of the locking claw 47, the open ring hoop 27 can elastically deform and fit tightly against the surface of the arc-shaped piece 28. The gap between the open ring hoop 27 and the arc-shaped piece 28 is reduced synchronously from two internal and external directions, which can maintain the positioning accuracy of the open ring hoop 27 and reduce the side effects of radial extrusion pressure and high heat at the welding point on the positioning of the open ring hoop 27.

[0063] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A welding equipment for producing grinding wheel protective covers, characterized in that: It includes a longitudinal moving welding part and a transverse feeding part. The transverse feeding part includes a support part one and a support part two arranged opposite to each other. A rotatable central shaft is provided between the support part one and the support part two. Multiple support plates are sleeved on the central shaft. A floating tensioning part is provided between adjacent support plates. A protective cover is sleeved on the central shaft and is located between the support plates and the floating tensioning part. The floating tensioning part includes a flexible support part and a locking part. The flexible support part is sleeved outside the central shaft and located inside the arc-shaped piece. The inner diameter of the locking part is larger than the outer diameter of the open-ring hoop, and the locking part is sleeved outside the open-ring hoop to apply radial extrusion force to the open-ring hoop. The flexible support part includes multiple axially spaced sliding rings. A radially protruding inverted "V"-shaped elastic frame is fixed between adjacent sliding rings. A support block is fixed at the tip of the elastic frame. A movable cone is fixed at the end of the sliding ring. The locking part includes a housing sleeved outside the central shaft and an adjusting cylinder fixed to the movable cone. The adjusting cylinder has an inner conical surface, and a plurality of locking claws arranged at circumferential intervals are provided on the inner side of the inner conical surface. Guide bolts are provided between the locking claws and the inner wall of the housing to realize the radial sliding of the locking claws. The second support part and the first support part can approach each other to squeeze the housing toward the grinding wheel cover and make the flexible support part and the locking part lock the open ring hoop synchronously.

2. The welding equipment for producing grinding wheel protective covers according to claim 1, characterized in that: The transverse feeding part also includes a base, a slide rail is provided on one side of the base, a second motor is slidably arranged on the slide rail, a support part is fixedly arranged on the upper side of the second motor, a gear is provided at the shaft end of the second motor, a central shaft is rotatably arranged in the support part, and a gear is fixedly arranged at the end of the central shaft, the gear meshing with the gear.

3. The welding equipment for producing grinding wheel protective covers according to claim 2, characterized in that: The transverse feeding section also includes a second slide rail, which is spaced apart from the first slide rail. A first motor is laterally slidably mounted on the first slide rail. A second support is fixedly mounted on the upper side of the first motor. One end of the central shaft passes through the second support and rotates within it. A threaded rod is fixedly mounted on the shaft end of the first motor. A central frame is mounted between the first slide rail and the second slide rail. The lower end of the central frame is fixedly connected to the base. The upper end of the central frame has a transverse threaded hole, and the threaded rod is threaded into the threaded hole.

4. The welding equipment for producing grinding wheel protective covers according to claim 1, characterized in that: Both the second support part and the first support part have locking parts on their opposite sides. Each locking part includes a locking ring and a connecting ring that are coaxial and fixedly connected to each other. The connecting ring is rotatably connected to either the second support part or the first support part. The connecting ring has a through hole 1 through which the central shaft can pass through. The second support part has a through hole 2 through which the central shaft can pass through. The locking ring has a threaded hole 2 at its center. The central shaft is threadedly connected to the threaded hole 2.

5. The welding equipment for producing grinding wheel protective covers according to claim 2, characterized in that: The longitudinal moving welding section includes a longitudinal frame fixed on the base, a longitudinal slide rail provided on the longitudinal frame, a welding unit slidably arranged on the longitudinal slide rail, and an electric telescopic rod fixed on the longitudinal frame, the electric telescopic rod driving the welding unit to move longitudinally.

6. The welding equipment for producing a grinding wheel protective cover according to claim 5, characterized in that: The welding unit has two sets arranged laterally at intervals, and the distance between the two sets of welding units is consistent with the distance between the two sets of grinding wheel covers on the lower side.

7. The welding equipment for producing grinding wheel protective covers according to claim 5, characterized in that: The welding unit includes a mounting plate, which is fixed to the slider of the longitudinal slide rail. The mounting plate is rotatably mounted on a rotating plate via a rotating shaft. A connecting frame is provided at one end of the rotating plate, which holds the welding head. The rotating plate has an arc-shaped groove, and the mounting plate has a positioning threaded hole. A positioning bolt passes through the arc-shaped groove and locks itself in the positioning threaded hole, thus locking the angle of the rotating plate.

8. The welding equipment for producing grinding wheel protective covers according to claim 1, characterized in that: Two limiting shafts are fixedly installed on the side of the support plate. The first limiting shaft limits the rotation angle of the grinding wheel cover. The second limiting shaft is also fixedly installed on the side of the support plate. The second limiting shaft limits the rotation angle of the open ring hoop.

9. The welding equipment for producing grinding wheel protective covers according to claim 1, characterized in that: A liquid-passing shaft is provided at the center of the central shaft, and a gas channel for gas passage is formed between the central shaft and the liquid-passing shaft. A liquid channel for liquid passage is provided inside the liquid-passing shaft. Several heat dissipation holes are opened on the side wall of the central shaft. The arc-shaped plate is fitted outside the central shaft and forms a support gap. The flexible support part is located in the support gap. The heat dissipation holes are connected to the support gap.

10. The welding equipment for producing a grinding wheel protective cover according to claim 9, characterized in that: A movable body is axially slidably disposed inside the outer casing. A spring is disposed between the movable body and the movable cone. A distance detector is also disposed between the movable body and the movable cone. The movable body is sleeved on the outside of the central shaft. A hydraulic control cavity is formed between the movable body and the central shaft. A piston ring is slidably disposed in the hydraulic control cavity. A movable ring is disposed on the side of the movable body away from the movable cone. The movable ring and the piston ring are fixedly connected by a sliding cylinder. A second hole is opened in the wall of the central shaft. The second hole communicates with the hydraulic control cavity. The portion of the liquid-conducting shaft located in the hydraulic control cavity extends radially to form a fan-shaped protrusion. A first hole is opened on the fan-shaped protrusion. The first hole communicates the liquid channel and the second hole.

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