A support wheel for preventing a workpiece body from being worn

Abstract

The present application relates to the technical field of polishing equipment, in particular to a support wheel for preventing workpiece body from being abraded, comprising a support wheel body and a ring-shaped protrusion, one end of the ring-shaped protrusion is arranged at the end of the outer circumferential surface of the support wheel body, and the other end is configured to be supported on the workpiece body; the support wheel body is configured to be provided with a polishing belt, and the outer circumferential surface of the ring-shaped protrusion is protruded from the polishing surface of the polishing belt or flush with the polishing surface of the polishing belt. Through the support wheel, the problem that the polishing belt is easy to abrade the workpiece body can be effectively solved.

Description

Technical Field

[0001] This invention relates to the field of grinding and polishing equipment technology, and in particular to a support wheel for preventing wear on the workpiece body. Background Technology

[0002] The workpiece body often needs to be welded due to practical needs. After welding, a weld seam will appear on the workpiece body. Since the height of the weld seam is generally higher than the workpiece body, a raised structure will be formed. Furthermore, due to the irregular shape of the raised surface formed during the welding process, the surface flatness or smoothness of the workpiece body cannot meet the standards, thus requiring grinding.

[0003] In existing technologies, grinding and polishing are generally performed using a belt grinder. A typical belt grinder includes a grinding belt, a drive wheel, and a transmission wheel, with the transmission wheel comprising a driven wheel and a tension wheel. The grinding belt is wound around the drive wheel and the transmission wheel. The weld seam on the workpiece is brought into contact with the grinding belt of the belt grinder, and the high-speed rotation of the grinding belt grinds and polishes the weld seam, bringing the workpiece surface to the required technical specifications.

[0004] In the prior art, improvements are generally made to the transmission wheel. For example, a utility model patent with publication number CN210024810U and publication date of February 7, 2020, discloses the following technical solution: a transmission wheel for a belt sander, wherein the outer circumferential surface of the transmission wheel is an arc surface arranged along the axial direction, the arc surface is symmetrically arranged along the radial center of the transmission shaft, and both ends of the outer circumferential surface of the transmission wheel are respectively provided with retaining edges, which are used to restrict the axial movement of the sanding belt along the outer surface of the transmission wheel.

[0005] While the above technical solution can solve the problem of sanding belt movement in actual use, it cannot limit the sanding depth, and the sanding belt is prone to wear on the workpiece body. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention proposes a support wheel for preventing wear on the workpiece body, which effectively solves the problem that abrasive belts easily wear down the workpiece body.

[0007] This invention is achieved by adopting the following technical solution: A support wheel for preventing wear on a workpiece body includes a support wheel body and an annular protrusion. One end of the annular protrusion is disposed at the end of the outer peripheral surface of the support wheel body, and the other end is configured to support the workpiece body. The support wheel body is configured to be wound with a grinding belt, and the outer peripheral surface of the annular protrusion protrudes from or is flush with the grinding surface of the grinding belt.

[0008] There are two annular protrusions, located at both ends of the support wheel body.

[0009] There is a gap between the annular protrusion and the abrasive belt.

[0010] The support wheel body includes a drive shaft, a first ring body disposed on the drive shaft, and a second ring body rotatably connected to the end of the first ring body; the abrasive belt is wound around the first ring body, and the annular protrusion is disposed on the second ring body.

[0011] The support wheel body includes a first drive shaft, a second drive shaft, a first ring body, and a second ring body; the first drive shaft is disposed inside the second drive shaft and protrudes outward from the second drive shaft, the first ring body is disposed on the outwardly protruding first drive shaft, and the second ring body is disposed at the end of the second drive shaft; the abrasive belt is wound around the first ring body, and the annular protrusion is disposed on the second ring body.

[0012] It also includes a radial locking device configured to adjust the distance by which the first drive shaft protrudes outward from the second drive shaft.

[0013] The radial locking device includes two locking blocks arranged one above the other and two locking members corresponding to the locking blocks respectively; the end face of the first drive shaft is provided with a groove that cooperates with the locking block, and the mating surface between the locking block and the groove is a matching inclined surface; the end of the second drive shaft near the groove is provided with a locking through hole for the locking block to move back and forth; the locking member drives the corresponding locking block to move back and forth in the groove and locks the position of the locking block, thereby driving the first drive shaft to move up and down.

[0014] The locking element is a screw, and the side of the locking through hole away from the groove is provided with a thread that matches the screw. The groove is also provided with a spring that is connected to the end face of the locking block.

[0015] It also includes a cover plate, the locking element being a screw, the cover plate having a screw hole that matches the screw and communicates with the locking through hole, and the groove also having a spring connected to the end face of the locking block.

[0016] The groove is one in number and is trapezoidal in shape. Two locking blocks are respectively engaged with the two inclined surfaces of the groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, an annular protrusion is innovatively supported on the workpiece body. By adjusting the height of the annular protrusion, when the grinding belt is grinding the weld seam on the workpiece body, the grinding belt cannot get any closer to the workpiece body, thus avoiding the grinding belt grinding the workpiece body. The workpiece body will not be worn down and its size will not be ground down to a smaller size.

[0018] 2. There are two annular protrusions, located at both ends of the support wheel body, to improve stability.

[0019] 3. There is a gap between the annular protrusion and the abrasive belt to prevent the abrasive belt from deviating and damaging the annular protrusion during the abrasion process.

[0020] 4. When the workpiece body is shaft-shaped or tubular, the annular protrusion is set on the second ring body. The second ring body and the first ring body can rotate relative to each other, which can avoid sliding friction between the annular protrusion and the workpiece body during the grinding process. The workpiece body is subjected to less force, the grinding process is more stable, and friction damage to the surface of the workpiece body between the workpiece body and the annular protrusion can also be avoided.

[0021] 5. The radial locking device allows adjustment of the distance by which the first drive shaft protrudes outward from the second drive shaft. Furthermore, in the vertical direction, the position of the first ring body relative to the second ring body can be adjusted, and the height difference between the grinding sand belt and the annular protrusion on the first ring body can be adjusted, thereby adapting to welds of different heights.

[0022] 6. The two locking blocks respectively cooperate with the two inclined surfaces of the groove, making the structure of this support wheel more compact and the position adjustment of the first drive shaft more convenient.

[0023] 7. The locking block is moved by the screw and thread, and the spring at the other end of the locking block makes the movement and fixation of the locking block more convenient and reliable.

[0024] 8. The cover plate's structure provides excellent dust protection, and the screw holes on the cover plate facilitate better arrangement of the various structures within this support wheel.

[0025] 9. The number of grooves is one and the grooves are trapezoidal, which makes processing easier and the structure of this support wheel is more compact. Attached Figure Description

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments, wherein: Figure 1 This is an exploded view of the support wheel in this invention; Figure 2 This is a cross-sectional structural diagram of the support wheel in this invention; Figure 3 This is a schematic diagram of the external elevation structure of the support wheel in this invention; Figure 4 This is a schematic diagram of the installation of the support wheel in this invention; Figure 5 This is another structural schematic diagram of the support wheel in this invention; Marked in the image: 1. Grinding belt; 2. First drive shaft; 3. Second drive shaft; 4. First ring body; 5. Second ring body; 6. Annular protrusion; 7. Locking block; 8. Groove; 9. Locking through hole; 10. Cover plate; 11. Screw hole; 12. Drive wheel; 13. Driven wheel; 14. Through hole. Detailed Implementation

[0027] Example 1 As a basic embodiment of the present invention, the present invention includes a support wheel for preventing wear on the workpiece body, comprising a support wheel body and an annular protrusion 6. One end of the annular protrusion 6 is disposed at the end of the outer peripheral surface of the support wheel body, and the other end is configured to support the workpiece body. The support wheel body is configured to be wound with a grinding belt 1, and the outer peripheral surface of the annular protrusion 6 protrudes from or is flush with the grinding surface of the grinding belt 1.

[0028] During the grinding process, once the annular protrusion 6 is supported on the workpiece body, the grinding belt 1 can no longer move closer to the workpiece body, thus avoiding grinding the workpiece body and ensuring the welding quality of the weld joint.

[0029] Example 2 In a preferred embodiment of the present invention, a support wheel for preventing wear on a workpiece body is provided, comprising a support wheel body and an annular protrusion 6. One end of the annular protrusion 6 is disposed at the end of the outer peripheral surface of the support wheel body, and the other end is configured to support the workpiece body. Preferably, there are two annular protrusions 6, located at opposite ends of the support wheel body. The support wheel body is configured to have a grinding belt 1 wound around it, and the outer peripheral surface of the annular protrusion 6 protrudes beyond or is flush with the grinding surface of the grinding belt 1. Furthermore, a certain distance is maintained between the annular protrusion 6 and the grinding belt 1 to prevent the grinding belt 1 from shifting away from the annular protrusion 6.

[0030] Example 3 In another preferred embodiment of the present invention, the present invention includes a support wheel for preventing wear on the workpiece body, comprising a support wheel body and an annular protrusion 6. One end of the annular protrusion 6 is disposed at the end of the outer peripheral surface of the support wheel body, and the other end is configured to support the workpiece body. The support wheel body is configured to be wound with a grinding belt 1, and the outer peripheral surface of the annular protrusion 6 protrudes from or is flush with the grinding surface of the grinding belt 1.

[0031] When the workpiece body is shaft-shaped or tubular, to avoid sliding friction between the annular protrusion 6 and the workpiece body, refer to the appendix of the instruction manual. Figure 5The support wheel body may include a drive shaft, a first ring 4 disposed on the drive shaft, and a second ring 5 rotatably connected to the end of the first ring 4. The annular protrusion 6 is disposed on the second ring 5, and the abrasive belt 1 is wound around the first ring 4.

[0032] The number of the second ring body 5 can be one or two. The annular protrusion 6 on the second ring body 5 can be formed by at least a portion of the outer peripheral surface of the second ring body 5 protruding outward from the first ring body 4.

[0033] Example 4 In another preferred embodiment of the present invention, the present invention includes a support wheel for preventing wear on the workpiece body. It includes a support wheel body and an annular protrusion 6. One end of the annular protrusion 6 is disposed at the end of the outer peripheral surface of the support wheel body, and the other end is configured to support the workpiece body. The support wheel body is configured to be wound with a grinding belt 1, and the outer peripheral surface of the annular protrusion 6 protrudes beyond or is flush with the grinding surface of the grinding belt 1.

[0034] When the workpiece body is shaft-shaped or tubular, to avoid sliding friction between the annular protrusion 6 and the workpiece body, the support wheel body may include a first drive shaft 2, a second drive shaft 3, a first ring body 4, and a second ring body 5. The first drive shaft 2 is disposed inside the second drive shaft 3 and protrudes outward from the second drive shaft 3. The first ring body 4 is disposed on the outwardly protruding first drive shaft 2. The second ring body 5 is disposed at the end of the second drive shaft 3, so that the first ring body 4 and the second ring body 5 do not affect each other.

[0035] The abrasive belt 1 is wound around the first ring body 4, and the annular protrusion 6 is disposed on the second ring body 5.

[0036] Example 5 As another preferred embodiment of the present invention, this embodiment further refines and supplements the technical solution of the support wheel based on embodiment 4. This embodiment also includes a radial locking device, which is configured to adjust the distance by which the first drive shaft 2 protrudes outward from the second drive shaft 3. More specifically, the radial locking device includes two locking blocks 7 arranged one above the other and two locking members corresponding to the locking blocks 7. The end face of the first drive shaft 2 is provided with two grooves 8 that cooperate with the locking blocks 7, and the mating surfaces between the locking blocks 7 and the corresponding grooves 8 are mutually matching inclined surfaces. The end of the second drive shaft 3 near the grooves 8 is provided with two locking through holes 9 for the reciprocating movement of the locking blocks 7.

[0037] The locking component may include a push-pull rod and a baffle plate disposed on the push-pull rod. The end of the push-pull rod is connected to the locking block 7. By pushing and pulling the push-pull rod, the corresponding locking block 7 moves back and forth within the groove 8. When the locking block 7 is in position, the baffle plate is fixed to the second drive shaft 3, thus locking the position of the locking block 7. When it is necessary to readjust the position of the locking block 7 within the groove 8, the fixing of the baffle plate to the second drive shaft 3 is released, and the push-pull rod is pushed and pulled again.

[0038] Alternatively, the locking element can be a screw. The locking through-hole 9 has a thread matching the screw on the side away from the groove 8, and the groove 8 also has a spring connected to the end face of the locking block 7. By rotating the screw, it can move back and forth. When the screw moves forward, it causes the locking block 7 to move forward within the groove 8, i.e., towards the direction closer to the groove, compressing the spring. When the screw moves backward, i.e., away from the groove, the spring causes the locking block 7 to move backward within the groove 8 until the spring returns to its original position or the locking block 7 abuts against the screw.

[0039] As the locking block 7 moves back and forth in the groove 8, it drives the first drive shaft 2 to move up and down, which can adjust the height difference between the grinding sand belt 1 and the annular protrusion 6 wound on the first ring body 4, thereby adapting to welds of different heights.

[0040] Example 6 For the preferred embodiment of the present invention, the present invention includes a support wheel for preventing wear on the workpiece body, as described in the appendix to the specification. Figure 1 ~Instruction manual included Figure 3 It includes a cover plate 10, a support wheel body, and an annular protrusion 6. More specifically, the support wheel body includes a first drive shaft 2, a second drive shaft 3, a first ring body 4, and a second ring body 5.

[0041] The second drive shaft 3 has a through hole 14 in its middle that matches the first drive shaft 2. The first drive shaft 2 is disposed within the through hole 14 of the second drive shaft 3 and protrudes outward from the second drive shaft 3. The first drive shaft 2 can only move up and down within the through hole 14, and cannot move along the axial direction of the first drive shaft 2. The first ring body 4 is disposed on the outwardly protruding first drive shaft 2. There can be two second ring bodies 5, located at opposite ends of the second drive shaft 3.

[0042] The abrasive belt 1 is wound around the first ring body 4. More specifically, the diameter of the circumferential surface of the first ring body 4 can be equal at all points, so that the portion of the abrasive belt 1 supported on the first ring body 4 is straight along the axial direction of the first ring body 4. Therefore, during the grinding process, the abrasive belt 1 moves along the axial direction of the workpiece body, and the abrasive belt 1 can contact the weld seams on the outer circumferential surface of the workpiece body. Moreover, the normal pressure of grinding is consistent when in contact, which is beneficial to the uniform wear of the abrasive belt 1 and to extending the service life of the abrasive belt 1.

[0043] Furthermore, the width of the first ring body 4, i.e., its axial dimension, is greater than the width of the abrasive belt 1. The annular protrusion 6 can be a separate component, disposed on the second ring body 5. Alternatively, the annular protrusion 6 can be formed by the outer circumference of the second ring body 5 protruding outward from the outer circumference of the first ring body 4. The height of the annular protrusion 6 is not less than the thickness of the abrasive belt 1. In this way, the circumferential surface of the annular protrusion 6 can protrude from the abrasive surface of the abrasive belt 1, or the circumferential surface of the annular protrusion 6 can be flush with the abrasive surface of the abrasive belt 1. Thus, during the abrasive belt 1's grinding of the workpiece, the annular protrusion 6 is supported on the workpiece body, which can prevent the abrasive belt 1 from grinding the workpiece body. In this embodiment, annular protrusions 6 are formed on both second ring bodies 5, which can improve stability. Furthermore, there is a gap between the annular protrusion 6 and the abrasive belt 1 to prevent the abrasive belt 1 from deviating and damaging the annular protrusion 6 during the grinding process.

[0044] Furthermore, the present invention may also include a radial locking device configured to adjust the distance by which the first drive shaft 2 protrudes outward from the second drive shaft 3.

[0045] The radial locking device includes two locking blocks 7 arranged one above the other and two locking elements corresponding to the locking blocks 7. A groove 8 that mates with the locking blocks 7 is provided on the end face of the first drive shaft 2 away from the frame. Specifically, the groove 8 can have a trapezoidal cross-section, and the two locking blocks 7 mate with the two inclined surfaces of the groove 8 respectively. The locking block 7 can be formed by splicing a block with a right-angled trapezoidal cross-section and a block with a square cross-section, such that the mating surfaces between the locking block 7 and the groove 8 are mutually matching inclined surfaces. In the radial direction, the maximum distance between the grooves 8 is greater than the sum of the maximum distances between the two locking blocks 7. A locking through hole 9 for the reciprocating movement of the locking blocks 7 is provided at the end of the second drive shaft 3 near the groove 8.

[0046] The locking element is a screw. The cover plate 10 has a screw hole 11 that matches the screw and communicates with the locking through hole 9. A spring connected to the end face of the locking block 7 is also provided in the groove 8. When the screw rotates, it can move back and forth. When the screw moves forward, it moves the locking block 7 forward within the groove 8, compressing the spring. When the screw moves backward, the spring moves the locking block 7 backward within the groove 8 until the spring returns to its original position or the locking block 7 abuts against the screw. The term "forward" refers to the side closer to the groove, and "backward" refers to the side farther from the groove.

[0047] By adjusting the positions of the two locking blocks 7 within the groove 8, the first drive shaft 2 can move up and down, thereby driving the first ring body 4 to move up and down as a whole. Since the position of the annular protrusion 6 on the second ring body 5 remains unchanged, the first ring body 4 moves up and down as a whole, driving the grinding belt 1 to move up and down, thereby adjusting the distance between the grinding surface of the grinding belt 1 and the annular protrusion 6 to accommodate welds of different heights.

[0048] The support wheel in this invention can be used in belt sanders, see the attached instruction manual. Figure 4 The belt sander includes a frame, a drive wheel 12, a driven wheel 13, a support wheel, and a sanding belt 1. The frame mainly provides a mounting base for other components. The second drive shaft 3 of the support wheel is connected to the frame, and the first ring 4 and the second ring 5 can rotate relative to each other.

[0049] The abrasive belt 1 is wound around the first ring 4 of the driving wheel 12, the driven wheel 13, and the support wheel. The driving wheel 12 drives the abrasive belt 1 to move, so as to grind the weld seam on the workpiece body. The support wheel supports the abrasive belt 1 at the position where it contacts the workpiece body for grinding. In this way, the support wheel can provide support for the abrasive belt 1, which is beneficial to the abrasive belt 1 for better grinding of the weld seam. Furthermore, the support wheel can be set in the middle of the longest side formed by the driving wheel 12 and the driven wheel 13, which can reduce the local deformation of the abrasive belt 1.

[0050] When grinding the weld, the annular protrusion 6 is supported on the workpiece body to prevent over-grinding during the grinding process of the abrasive belt 1. Specifically, during the grinding process, once the annular protrusion 6 is supported on the workpiece body, the abrasive belt 1 cannot move further towards the workpiece body, thus avoiding grinding the workpiece body. When the workpiece is a shaft-shaped or tubular component, this design prevents further grinding of the radial dimension of the component, thus ensuring both the welding quality and the surface smoothness or flatness of the weld's circumference. Flatness refers to the fact that it does not protrude too much compared to other components, and the weld's circumference is relatively smooth, not to the surface flatness. The height of the annular protrusion 6 can be set as needed, so that the height of the weld on the circumference of the component after grinding can be more consistent. Specifically, when the circumference of the annular protrusion 6 is flush with the grinding surface of the abrasive belt 1, the weld on the surface of the component after grinding can be flush with the circumference of the component.

[0051] In summary, any other corresponding modifications made by those skilled in the art after reading this invention document, without requiring creative mental effort, based on the technical solutions and concepts of this invention, are all within the scope of protection of this invention.

Claims

1. A support wheel for preventing wear on the workpiece body, characterized in that: The device includes a support wheel body and an annular protrusion (6). One end of the annular protrusion (6) is located at the end of the outer peripheral surface of the support wheel body, and the other end is configured to support the workpiece body. The support wheel body is configured to be wound with a grinding belt (1). The outer peripheral surface of the annular protrusion (6) protrudes from the grinding surface of the grinding belt (1) or is flush with the grinding surface of the grinding belt (1). The support wheel body includes a first drive shaft (2), a second drive shaft (3), a first ring body (4), and a second ring body (5). The first drive shaft (2) is located inside the second drive shaft (3) and protrudes outward from the second drive shaft (3). The first ring body (4) is located on the outwardly protruding first drive shaft (2), and the second ring body (5) is located at the end of the second drive shaft (3). The grinding belt (1) is wound around the first ring body (4), and the annular protrusion (6) is located on the second ring body (5). It also includes a radial locking device configured to adjust the distance by which the first drive shaft (2) protrudes outward from the second drive shaft (3); the radial locking device includes two locking blocks (7) arranged one above the other and two locking members corresponding to the locking blocks (7); the end face of the first drive shaft (2) is provided with a groove (8) that cooperates with the locking block (7), and the mating surface between the locking block (7) and the groove (8) is a matching inclined surface; the end of the second drive shaft (3) near the groove (8) is provided with a locking through hole (9) for the locking block (7) to move back and forth; the locking member drives the corresponding locking block (7) to move back and forth in the groove (8) and locks the position of the locking block (7), thereby driving the first drive shaft (2) to move up and down.

2. A support wheel for preventing wear on a workpiece body according to claim 1, characterized in that: The number of the annular protrusions (6) is two, located at both ends of the support wheel body.

3. A support wheel for preventing wear on a workpiece body according to claim 2, characterized in that: There is a gap between the annular protrusion (6) and the abrasive belt (1).

4. A support wheel for preventing wear on a workpiece body according to claim 1, characterized in that: The locking element is a screw. The locking through hole (9) has a thread matching the screw on the side away from the groove (8). The groove (8) also has a spring connected to the end face of the locking block (7).

5. A support wheel for preventing wear on a workpiece body according to claim 1, characterized in that: It also includes a cover plate (10), the locking element is a screw, the cover plate (10) is provided with a screw hole (11) that matches the screw and communicates with the locking through hole (9), and the groove (8) is also provided with a spring that is connected to the end face of the locking block (7).

6. A support wheel for preventing wear on a workpiece body according to claim 1, characterized in that: The number of grooves (8) is one, the groove (8) is trapezoidal, and the two locking blocks (7) respectively cooperate with the two inclined surfaces of the groove (8).

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