Tool for attaching wheel rim silencing cotton

Abstract

The application discloses a tool for attaching wheel rim silence cotton, and belongs to the field of vehicle processing. The tool for attaching wheel rim silence cotton comprises a workbench, an assembling part, a rolling device, and a roller. The assembling part is rotatably installed on the workbench, and a wheel rim to be processed is adapted to be installed on the assembling part. The rolling device is installed on the workbench and has the roller, which is arranged at intervals from the wheel rim to be processed and is used for rolling the silence cotton outside the wheel rim to be processed when the wheel rim to be processed rotates. According to the tool for attaching wheel rim silence cotton provided by the embodiment of the application, the operation of attaching the silence cotton is simple, the working efficiency of attaching the silence cotton can be improved, and manual pressure is not needed during the processing, so that the working strength of the workers can be reduced.

Description

Tooling for attaching sound-dampening material to wheel rims Technical Field

[0001] This application belongs to the field of vehicle processing technology, and in particular relates to a tooling for attaching sound-absorbing cotton to wheel rims. Background Technology

[0002] Vehicle tires tend to generate significant noise during normal driving. To reduce tire noise and lower the cost of silent tires, a low-cost silent tire is made by attaching sound-absorbing cotton to the outer circumference of the rim. Currently, the main method for attaching sound-absorbing cotton to the rim is by manual application and pressure by workers. However, this method is inefficient and requires a high level of physical exertion from the workers. Summary of the Invention

[0003] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a tooling for attaching sound-absorbing cotton to wheel rims. The operation of attaching sound-absorbing cotton is simple, which can improve the work efficiency of attaching sound-absorbing cotton, and no manual pressure is required during the processing, which can reduce the workload of workers.

[0004] Firstly, this application provides a tooling for attaching sound-absorbing cotton to wheel rims, comprising:

[0005] Work surface;

[0006] An assembly is rotatably mounted on the worktable, and the wheel rim to be processed is adapted to be mounted on the assembly;

[0007] A rolling device is installed on the worktable and has rollers. The rollers are spaced apart from the rim to be processed and are used to roll the sound-absorbing cotton on the outside of the rim to be processed when the rim to be processed rotates.

[0008] According to the tooling provided in the embodiments of this application for attaching sound-absorbing cotton to wheel rims, by setting a rolling device and fittings, the operation of attaching sound-absorbing cotton is simple, which can improve the work efficiency of attaching sound-absorbing cotton, and no manual pressure is required during the processing, which can reduce the workload of workers.

[0009] According to one embodiment of this application, the rolling device includes:

[0010] The drive unit and the roller are mounted on the drive unit, which is mounted on the worktable. The drive unit is used to adjust the distance between the roller and the rim to be processed.

[0011] According to one embodiment of this application, the driving unit includes:

[0012] Support, the support is mounted on the worktable surface;

[0013] A support arm, which is pivotally mounted to the support, and a roller is mounted on the support arm.

[0014] According to one embodiment of this application, the support arm is arc-shaped, and the center of curvature of the support arm is located on one side toward the pivot axis of the assembly, and the roller is mounted on the side of the support arm toward the pivot axis of the assembly.

[0015] According to one embodiment of this application, the driving unit further includes:

[0016] A roller is mounted on the end of the support arm away from the support.

[0017] According to one embodiment of this application, the support arm is provided with weight reduction holes.

[0018] According to one embodiment of this application, the support arm is provided with multiple mounting positions, and the roller can be fixed to one of the multiple mounting positions.

[0019] According to one embodiment of this application, the rolling device further includes:

[0020] The worktable is provided with multiple positioning parts, and the positioning pin is used to position and cooperate with the positioning parts and the support arm.

[0021] According to one embodiment of this application, the assembly includes:

[0022] A turntable, which is rotatably mounted on the worktable surface;

[0023] A positioning plate is mounted on the turntable, and the wheel rim to be processed is adapted to be fitted onto the positioning plate and placed on the turntable.

[0024] According to one embodiment of this application, it also includes:

[0025] The bearing is used to rotatably mount the assembly on the worktable.

[0026] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0028] Figure 1 is a schematic diagram of the tooling for attaching sound-absorbing cotton to wheel rims provided in an embodiment of this application;

[0029] Figure 2 is a schematic diagram of the rolling device of the tooling for attaching sound-absorbing cotton to wheel rims provided in an embodiment of this application;

[0030] Figure 3 is a structural schematic diagram of the tooling for attaching sound-absorbing cotton to wheel rims provided in an embodiment of this application.

[0031] Figure label:

[0032] Assembly parts 100, bearings 110, turntable 120, positioning plate 130, bolts 140;

[0033] Rolling device 200, support 210, support arm 220, weight reduction hole 221, roller 230, handle 240, support member 250, roller 260;

[0034] Wheel rim 300, work surface 400, sound insulation cotton 500. Detailed Implementation

[0035] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0036] The tooling for attaching sound-absorbing cotton to wheel rims according to an embodiment of this application is described below with reference to Figures 1-3.

[0037] This application provides a fixture for attaching sound-absorbing cotton to wheel rims, as shown in Figures 1-3. The fixture for attaching sound-absorbing cotton to wheel rims includes a worktable 400, an assembly 100, and a rolling device 200.

[0038] As shown in Figures 1-3, the workbench 400 can be the upper surface of a worktable, the assembly 100 is rotatably mounted on the workbench 400, the wheel rim 300 to be processed is suitable for mounting on the assembly 100, the assembly 100 can be mounted on the workbench 400 near the worker's workstation for easy operation, and the rolling device 200 can be mounted on the workbench 400 away from the worker's workstation.

[0039] As shown in Figures 1 and 2, the rolling device 200 is installed on the worktable 400 and has a roller 230. The roller 230 is spaced apart from the rim 300 to be processed and is used to roll the sound-absorbing cotton 500 outside the rim 300 to be processed when the rim 300 to be processed rotates.

[0040] As shown in Figures 1 and 2, the rotation axis of the roller 230 is set parallel to the rotation axis of the assembly 100 so that the roller 230 can rotate relative to the rim 300, reducing the friction between the roller 230 and the sound-absorbing cotton 500 and facilitating the rotation of the rim 300. The width of the roller 230 can be greater than the width of the sound-absorbing cotton 500 and less than the width of the rim 300 to ensure that the roller 230 can roll on all positions of the sound-absorbing cotton 500.

[0041] As shown in Figures 1 and 2, the distance between the roller 230 and the outer circumferential surface of the rim 300 to be processed can be 2mm-3mm. That is, during the processing, the part of the sound-absorbing cotton 500 in contact with the roller 230 is compressed to 2mm-3mm. The thickness of the sound-absorbing cotton 500 under normal conditions is usually about 20mm. Therefore, the roller 230 can provide sufficient pressure to roll the sound-absorbing cotton 500. Other suitable distance ranges between the roller 230 and the outer circumferential surface of the rim 300 to be processed can also be selected according to the requirements.

[0042] In actual operation, the rim 300 is placed horizontally on the workbench 400 and installed on the assembly 100. At this time, the axis of the rim 300 is parallel to the rotation axis of the assembly 100 and the roller 230. One end of the sound-absorbing cotton 500 is passed through the gap between the roller 230 and the outer circumference of the rim 300 from one side of the roller 230. The pressure applied by the roller 230 makes the end of the sound-absorbing cotton 500 stick to the outer circumference of the rim 300. After the end is attached, the remaining part of the sound-absorbing cotton 500 is placed along the outer circumference of the rim 300. The operator rotates the assembly 100 in the specified direction to make the rim 300 rotate. During the rotation, the roller 230 applies pressure to stick the entire piece of sound-absorbing cotton 500 to the outer circumference of the rim 300.

[0043] By setting up the rolling device 200, pressure can be applied to the sound-absorbing cotton 500 by the rolling device 200 itself during the processing, without the need for manual pressure application by workers. Furthermore, the distance between the roller 230 in the rolling device 200 and the outer circumferential surface of the rim 300 is fixed, which allows the roller 230 to apply pressure to the sound-absorbing cotton 500 evenly, ensuring that all positions of the sound-absorbing cotton 500 are attached to the outer circumferential surface of the rim 300.

[0044] According to the tooling for attaching sound-absorbing cotton to wheel rims provided in the embodiments of this application, by setting the rolling device 200 and the assembly 100, the operation of attaching sound-absorbing cotton is simple, which can improve the work efficiency of attaching sound-absorbing cotton, and no manual pressure is required during the processing, which can reduce the workload of workers.

[0045] In some embodiments, as shown in Figures 1 and 2, the rolling device 200 includes a drive unit and a roller 230. The roller 230 is mounted on the drive unit, which is mounted on the worktable 400. The drive unit is used to adjust the distance between the roller 230 and the rim 300 to be processed.

[0046] As shown in Figures 1 and 2, the drive unit can be fixedly mounted on the worktable 400 or rotatably mounted on the worktable 400. The drive unit can adjust the distance between the roller 230 and the rim 300 to be processed by linear movement. For example, the drive unit can be a cylinder or a hydraulic cylinder, and the roller 230 is mounted on the output end of the cylinder or hydraulic cylinder. The drive unit can also be a motor and a ball screw slide rail, with the output end of the motor connected to the input end of the ball screw slide rail, and the roller 230 mounted on the nut of the ball screw slide rail. The drive unit can also adjust the distance between the roller 230 and the rim 300 to be processed by rotation or other means.

[0047] In actual operation, when the rim 300 is unprocessed, the operator can operate the drive unit to increase the distance between the roller 230 and the rim 300 to be processed, that is, to place the roller 230 at a distance from the rim 300 to be processed, so as to facilitate the placement of the sound-absorbing cotton 500. When the rim 300 is being processed, the operator can operate the drive unit to shorten the distance between the roller 230 and the rim 300 to be processed. After the roller 230 contacts the sound-absorbing cotton 500, it continues to apply pressure to the sound-absorbing cotton 500, compressing the thickness of the sound-absorbing cotton 500 to a preset value. Then, the operator rotates the assembly 100 so that the roller 230 rolls the sound-absorbing cotton 500 at least once.

[0048] The aforementioned drive unit and roller 230 facilitate the placement of the sound-absorbing cotton 500 on the outer circumference of the rim 300 before processing, and also facilitate the installation of the rim 300 onto the assembly 100. This avoids collisions between the rim 300 and roller 230 during installation, which could lead to installation failure and further improve the efficiency of processing the rim 300 and the sound-absorbing cotton 500.

[0049] In some embodiments, as shown in Figures 1 and 2, the drive unit includes a support 210 and a support arm 220. The support 210 is mounted on the worktable 400; the support arm 220 is pivotally mounted on the support 210, and a roller 230 is mounted on the support arm 220.

[0050] As shown in Figures 1 and 2, the bottom of the support 210 can be a rectangular structure, or a circular or other shape. The bottom of the support 210 is fixedly installed on the worktable 400 by bolts, screws or other means.

[0051] As shown in Figures 1 and 2, the top of the support 210 is a stepped shaft structure. One end of the support arm 220 is provided with a mounting hole. The support arm 220 can be pivotally mounted on the stepped surface of the support 210 through the mounting hole. The other end of the support arm 220 is provided with a handle 240. The operator can drive the support arm 220 to rotate relative to the support 210 through the handle 240. The roller 230 is installed on the side of the support arm 220.

[0052] In actual operation, when the rim 300 is unprocessed, the operator can use the handle 240 to rotate the support arm 220 relative to the support 210 away from the assembly 100, thereby increasing the distance between the roller 230 and the rim 300 to be processed. That is, the roller 230 is placed at a position far away from the rim 300 to be processed, so as to facilitate the placement of the sound-absorbing cotton 500 and the installation of the rim 300. When processing the rim 300, the operator can use the handle 240 to rotate the support arm 220 relative to the support 210 towards the rim 300, thereby shortening the distance between the roller 230 and the rim 300 to be processed. The operator continues to rotate the support arm 220 by using the handle 240, so that the roller 230 contacts the sound-absorbing cotton 500 and continues to apply pressure to the sound-absorbing cotton 500. After the thickness of the sound-absorbing cotton 500 is compressed to the preset value, the operator rotates the assembly 100 to ensure that the roller 230 rolls the sound-absorbing cotton 500 at least once.

[0053] With the above-mentioned support 210 and support arm 220, the structure is simple and easy for workers to operate. At the same time, the support arm 220 can be rotated to different positions according to the diameter of the wheel rim 300, thereby expanding the applicability of the tooling used for attaching the wheel rim sound insulation cotton 500. By providing a handle 240 at the end of the support arm 220, workers can easily use a small amount of external force to rotate the support arm 220 relative to the support 210.

[0054] In some embodiments, as shown in Figures 1 and 2, the support arm 220 is arc-shaped, and the center of curvature of the support arm 220 is located on one side toward the pivot axis of the assembly 100, and the roller 230 is mounted on the side of the support arm 220 toward the pivot axis of the assembly 100.

[0055] As shown in Figures 1 and 2, the support arm 220 can be a minor arc to reduce the space occupied by the whole on the worktable 400, and the support arm 220 can also be set as a major arc.

[0056] As shown in Figures 1 and 2, the roller 230 is mounted on the side of the support arm 220 facing the pivot axis of the assembly 100 via a bracket. The roller 230 can be mounted on the end of the support arm 220 near the support 210, so that the roller 230 can apply pressure to the sound-absorbing cotton 500 when the support arm 220 rotates at a small angle relative to the support 210. The roller 230 can also be mounted in the middle part of the support arm 220, the end of the support arm 220 away from the support 210, or other parts of the support arm 220.

[0057] By setting the support arm 220 to an arc shape, the path area traversed by the support arm 220 during rotation can be reduced, thereby reducing the space required for the support arm 220 on the worktable 400. At the same time, the arc shape of the support arm 220 can better fit the shape of the rim 300, so the roller 230 can apply pressure to the sound-absorbing cotton 500 at any position of the support arm 220.

[0058] In some embodiments, as shown in Figures 1 and 2, the drive unit further includes a roller 260, which is mounted on the end of the support arm 220 away from the support 210.

[0059] As shown in Figures 1 and 2, a support member 250 is provided on the side of the support arm 220 away from the assembly 100. The support member 250 protrudes outward along the radial direction of the support arm 220 and is installed at the end of the support arm 220 away from the support 210. A roller 260 is installed at the bottom of the end of the support member 250 away from the support arm 220 to avoid interference between the roller 260 and the support arm 220 during movement.

[0060] As shown in Figures 1 and 2, the roller 260 can be one or more. The roller 260 can be a swivel wheel to ensure that the roller 260 can roll along the rotation path of the support arm 220.

[0061] In actual operation, when the rim 300 is unprocessed, the operator can use the handle 240 to drive the support arm 220 to rotate relative to the support 210 away from the assembly 100 under the action of the roller 260, thereby increasing the distance between the roller 230 and the rim 300 to be processed. When processing the rim 300, the operator can use the handle 240 to drive the support arm 220 to rotate relative to the support 210 towards the rim 300 under the action of the roller 260, thereby shortening the distance between the roller 230 and the rim 300 to be processed. The operator can continue to drive the support arm 220 to rotate so that the roller 230 contacts the sound-absorbing cotton 500 and continues to apply pressure to the sound-absorbing cotton 500. After the thickness of the sound-absorbing cotton 500 is compressed to the preset value, the operator can rotate the assembly 100 to ensure that the roller 230 rolls the sound-absorbing cotton 500 at least once.

[0062] By providing a support member 250 and a roller 260 at the end of the support arm 220 away from the support 210, a supporting force can be provided to the end of the support arm 220 away from the support 210, maintaining the overall balance of the support arm 220. At the same time, the roller 260 can reduce the friction between the support arm 220 and the worktable surface 400 during rotation, making it easier for the support arm 220 to rotate relative to the support 210.

[0063] In some embodiments, as shown in Figures 1 and 2, the support arm 220 is provided with a weight reduction hole 221.

[0064] As shown in Figures 1 and 2, the support arm 220 has a long, waist-shaped weight-reducing hole 221 along its circumference. Alternatively, multiple weight-reducing holes 221 can be spaced apart along the circumference of the support arm 220. The weight-reducing holes 221 can also be rectangular, circular, elliptical, or other shapes.

[0065] As shown in Figures 1 and 2, the weight-reducing hole 221 is located in the middle of the support arm 220 so that the strength of the support arm 220 is the same on both the upper and lower sides of the weight-reducing hole 221, thus preventing one side from breaking during operation.

[0066] By setting the aforementioned weight reduction hole 221, the overall weight of the support arm 220 can be reduced, and at the same time, the production cost of the tooling used for attaching the rim sound-absorbing cotton can be reduced to a certain extent.

[0067] In some embodiments, the support arm 220 is provided with a plurality of mounting positions, and the roller 230 can be fixed to one of the plurality of mounting positions.

[0068] The support arm 220 has multiple mounting positions along its circumference. The mounting positions can be mounting grooves located on the upper and lower sides of the weight reduction hole 221. That is, the upper side of the weight reduction hole 221 has multiple mounting grooves, and the lower side of the weight reduction hole 221 also has multiple mounting grooves. The mounting grooves on the upper side of the weight reduction hole 221 and the mounting grooves on the lower side of the weight reduction hole 221 are arranged in a one-to-one correspondence in the longitudinal direction. The two mounting grooves on the upper and lower sides of the weight reduction hole 221 are a set of mounting positions. The roller 230 can be installed in one of the multiple mounting positions by bolts or other means.

[0069] By setting the above mounting position, the position of the roller 230 on the support arm 220 can be adjusted according to the diameter of the rim 300 or other requirements.

[0070] In some embodiments, the rolling device 200 further includes a positioning pin, and the worktable 400 is provided with a plurality of positioning parts. The positioning pin is used to position and cooperate with the positioning parts and the support arm 220.

[0071] The worktable 400 has multiple positioning parts along the rotation path of the support arm 220. The positioning parts can be grooves that are recessed downward relative to the worktable 400, and the support member 250 of the support arm 220 has positioning holes.

[0072] In actual operation, when the rim 300 is not being machined, the operator uses handle 240 to rotate the support arm 220 to a position where the roller 230 is farther from the assembly 100, aligning the positioning hole on the support 250 with the corresponding positioning part on the worktable 400. One end of the positioning pin is then inserted into the corresponding positioning part on the worktable 400 after passing through the positioning hole on the support 250, thereby fixing the support arm 220 relative to the worktable 400. When machining the rim 300, the operator uses handle 240 to rotate the support arm 220 to a position where the roller 230 is closer to the assembly 100, aligning the positioning hole on the support 250 with the corresponding positioning part on the worktable 400. One end of the positioning pin is then inserted into the corresponding positioning part on the worktable 400 after passing through the positioning hole on the support 250, thereby fixing the support arm 220 relative to the worktable 400.

[0073] With the above-mentioned positioning pin, positioning part and positioning hole, the support arm 220 can be fixed when the rim 300 and the sound-absorbing cotton 500 are processed by the roller 230, so as to avoid the support arm 220 driving the roller 230 away from the rim 300 and the sound-absorbing cotton 500 during the processing, which would result in unreliable adhesion of the sound-absorbing cotton 500.

[0074] In some embodiments, as shown in FIG3, the assembly 100 includes a turntable 120 and a positioning plate 130.

[0075] As shown in Figure 3, the turntable 120 is rotatably mounted on the worktable 400. The wheel rim 300 to be processed is suitable for being placed on the turntable 120. The turntable 120 can be a circular structure, or a rectangular or other shape structure. The diameter of the turntable 120 can be larger than the diameter of the wheel rim 300 so that the wheel rim 300 can be completely supported on the turntable 120.

[0076] As shown in Figure 3, the positioning plate 130 is installed on the turntable 120. The rim 300 to be processed is suitable for being fitted onto the positioning plate 130. The diameter of the positioning plate 130 is smaller than the diameter of the turntable 120. The positioning plate 130 can be installed on the upper surface of the turntable 120 by bolts 140, screws or other means. Four bolts 140 or screws can be set, and the four bolts 140 are symmetrically arranged in pairs. Other numbers of bolts 140 or screws can also be set.

[0077] In actual operation, when machining the rim 300, the turntable 120 is installed on the worktable 400 and the positioning plate 130 is installed on the turntable 120. The rim 300 is fitted onto the outer periphery of the positioning plate 130 through its own positioning hole, and the lower surface of the rim 300 is supported on the upper surface of the turntable 120. The operator rotates the turntable 120, which drives the positioning plate 130 and the rim 300 to rotate around the pivot axis, thereby cooperating with the rolling device 200 to complete the machining.

[0078] By setting up a turntable 120 and a positioning plate 130, the rim 300 can be rotated while the positioning plate 130 restricts the movement of the rim 300 on the worktable 400, thus preventing the rim 300 from moving away from the roller 230 and causing the sound-absorbing cotton 500 to adhere unreliably.

[0079] In some embodiments, as shown in FIG3, the tooling for attaching the rim sound-absorbing cotton also includes a bearing 110, and the assembly 100 is rotatably mounted on the worktable 400 via the bearing 110.

[0080] As shown in Figure 3, the bearing 110 can be a flat bearing 110, which is mounted on the worktable 400. The turntable 120 of the assembly 100 is mounted on the bearing 110. By setting the bearing 110, the rotational friction between the assembly 100 and the worktable 400 can be reduced, so that the operator can rotate the assembly 100 relative to the worktable 400 with a smaller force, thereby further improving the working efficiency of processing the rim 300 and reducing the workload of the operator.

[0081] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0082] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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 this application.

[0083] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0084] In the description of this application, "multiple" means two or more.

[0085] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0086] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0087] Other configurations of the embodiments of this application, such as ... and ..., and operations, are known to those skilled in the art and will not be described in detail here.

[0088] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0089] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A tooling for attaching sound-absorbing cotton to wheel rims, characterized in that, include: Work surface; An assembly is rotatably mounted on the worktable, and the wheel rim to be processed is adapted to be mounted on the assembly; A rolling device is installed on the worktable and has rollers. The rollers are spaced apart from the rim to be processed and are used to roll the sound-absorbing cotton on the outside of the rim to be processed when the rim to be processed rotates. The rolling device includes: a drive unit and the roller, the roller being mounted on the drive unit, the drive unit being mounted on the worktable, and the drive unit being used to adjust the distance between the roller and the rim to be processed; the drive unit includes: a support, the support being mounted on the worktable; a support arm, the support arm being pivotally mounted on the support, and the roller being mounted on the support arm; the support arm is arc-shaped, and the center of curvature of the support arm is located on one side facing the pivot axis of the assembly, and the roller is mounted on the side of the support arm facing the pivot axis of the assembly.

2. The tooling for attaching sound-absorbing cotton to wheel rims according to claim 1, characterized in that, The drive unit further includes a roller, which is mounted on the end of the support arm away from the support.

3. The tooling for attaching sound-absorbing cotton to wheel rims according to claim 1, characterized in that, The support arm is provided with weight reduction holes.

4. The tooling for attaching sound-absorbing cotton to wheel rims according to claim 1, characterized in that, The support arm has multiple mounting positions, and the roller can be fixed to one of the multiple mounting positions.

5. The tooling for attaching sound-absorbing cotton to wheel rims according to claim 1, characterized in that, The rolling device further includes a positioning pin. The worktable is provided with multiple positioning parts, and the positioning pin is used to position and cooperate with the positioning parts and the support arm.

6. The tooling for attaching sound-absorbing cotton to wheel rims according to any one of claims 1-5, characterized in that, The assembly includes: a turntable, which is rotatably mounted on the worktable; and a positioning plate, which is mounted on the turntable, and the wheel rim to be processed is adapted to be fitted over the positioning plate and placed on the turntable.

7. The tooling for attaching sound-absorbing cotton to wheel rims according to any one of claims 1-5, characterized in that, Also includes: The bearing is used to rotatably mount the assembly on the worktable.

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