Clamping device for hub spraying

Abstract

The utility model provides a clamping device for hub spraying, relates to the technical field of automobile part coating, and aims to solve the problem that the contact area between an existing double-head clamp for clamping a hub and a rim is large. The clamping device for hub spraying comprises a plurality of clamping assemblies arranged in the circumferential direction of a hub at intervals, each clamping assembly comprises a clamping disc, each clamping disc comprises a disc body and a tooth-shaped part arranged on the periphery of the disc body, the clamping discs abut against a rim of the hub through the tooth-shaped parts, and the clamping assemblies are arranged in the axial direction of the hub. The positions of the clamping discs of the multiple clamping assemblies are the same. According to the clamping device, the contact area between the clamping disc and the rim is reduced, so that the clamping device can be suitable for spraying operation of hubs of various sizes, and the powder sticking defect cannot be generated in the spraying operation process.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts coating, in particular to a clamping device for wheel hub spraying. Background Art

[0002] At present, in the field of aluminum wheel coating technology, a clamping device is required in the powder spraying process. For the spraying of the wheel hub, a double-headed clamp is usually set at the end of the manipulator. Figure 1 A top view of the structure of a double-headed clamp 100' provided in the prior art. Figure 2 The structure top view of the double-headed clamp 100' provided in the prior art when clamping the wheel hub. Figure 1 and Figure 2 As shown, the double-headed clamp 100' used in the prior art includes a connection block 110' for connecting to the end of the manipulator and a clamping column 120' for abutting against the rim, wherein the clamping column 120' is assembled in a socket provided on the side of the connection block 110'. When the wheel hub needs to be sprayed, two sets of double-headed clamps 100' are arranged at intervals in the circumferential direction of the rim. For details, see Figure 2 .

[0003] When the wheel hub is larger, that is, when the radius of curvature of the wheel hub is larger, the clamping column 120 ′ is used to contact the rim with its inclined surface 121 ′. At this time, the contact area between the clamping column 120 ′ and the rim is larger, which is easy to cause powder sticking defects. Utility Model Content

[0004] The utility model aims to provide a clamping device for hub spraying, so as to solve the technical problem that the contact area between the existing double-headed clamp for clamping the hub and the rim is relatively large.

[0005] The utility model provides a clamping device for wheel hub spraying, comprising a plurality of clamping assemblies arranged at intervals along the circumference of the wheel hub, wherein the clamping assembly comprises a clamping disk, and the clamping disk comprises a disk body and a toothed portion arranged on the outer circumference of the disk body, the clamping disk abuts against the rim of the wheel hub through the toothed portion, and along the axial direction of the wheel hub, the clamping disks of the plurality of clamping assemblies are located at the same position.

[0006] Furthermore, the clamping assembly also includes a connecting shaft, the disc body is provided with a center hole, and the disc body is fixedly sleeved on the connecting shaft through the center hole.

[0007] Furthermore, the disc body is also provided with a plurality of weight-reducing holes, and the plurality of weight-reducing holes are arranged around the central hole.

[0008] Furthermore, the weight-reducing hole is a circular hole.

[0009] Furthermore, the clamping plate is an integrated structure.

[0010] Furthermore, the diameter of the disk body is a, the diameter of the clamping disk is b, the diameter of the center hole is c, and the diameter of the weight-reducing hole is d, wherein 175mm<a<185mm, 185mm<b<190mm, 16mm<c<20mm, and 16mm<d<20mm.

[0011] Furthermore, along the axial direction of the hub, the size of the disc body is e, and the size of the toothed portion is f, wherein 7mm<e<9mm, 4mm<f<6mm.

[0012] Furthermore, the number of the clamping assemblies is four.

[0013] Furthermore, the clamping device also includes a mounting bracket, which includes a first side plate, a connecting plate and a second side plate connected in sequence in a U shape, wherein the connecting plate is used to be fixedly connected to the end of the manipulator; two sliding shafts are arranged side by side between the first side plate and the second side plate, and the two clamping assemblies are movably mounted on one of the sliding shafts, and the two clamping assemblies are movably mounted on the other sliding shaft.

[0014] Furthermore, the mounting bracket also includes a support plate, which is located between the first side plate and the second side plate and fixedly connected to the connecting plate, and the two sliding shafts pass through the support plate, wherein the two clamping assemblies installed on each sliding shaft are respectively arranged on both sides of the support plate.

[0015] The beneficial effects of the clamping device for wheel hub spraying of the utility model are:

[0016] By setting a clamping device mainly composed of a plurality of clamping components, when the wheel hub needs to be sprayed, the plurality of clamping components are distributed in the circumference of the wheel hub, and the wheel hub is clamped by the abutment between the clamping disks of the plurality of clamping components and the rim. The clamping disk abuts against the rim through the toothed portion, so that no matter the diameter of the wheel hub is large or small, the clamping disk and the rim are in line-surface contact, which effectively reduces the contact area between the clamping disk and the rim, so that the clamping device can be applied to the spraying of wheel hubs of various sizes, and no powder sticking defects will be generated during the spraying process.

[0017] In addition, by setting the outer edge of the clamping disk as a toothed portion, the weight of the clamping disk can be reduced, making the structure of the clamping disk lightweight, which is conducive to ensuring the calibration accuracy of the manipulator. Moreover, the outer edge of the clamping disk is in the form of a toothed portion, so that each position of the clamping disk along its circumference can be used as a position for contacting the rim, thereby eliminating the tedious steps of adjusting and calibrating the circumferential position of the clamping disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 A top view of the structure of a double-headed clamp provided in the prior art;

[0020] Figure 2 A top view of the structure of a double-headed clamp provided in the prior art when clamping a wheel hub;

[0021] Figure 3 A top view of the structure of a clamping disc of a clamping device for hub spraying provided by an embodiment of the utility model;

[0022] Figure 4 A top view of the local structure of the clamping device for hub spraying provided by an embodiment of the utility model when clamping the hub;

[0023] Figure 5 A structural front view of the clamping device for wheel hub spraying provided in an embodiment of the utility model when clamping the wheel hub.

[0024] Description of reference numerals:

[0025] 010-wheel hub; 011-wheel rim;

[0026] 100'- double-head clamp; 110'- connecting block; 120'- clamping column; 121'- inclined plane;

[0027] 100-clamping assembly; 110-clamping plate; 120-connecting shaft; 200-mounting bracket; 210-first side plate; 220-connecting plate; 230-second side plate; 240-sliding shaft; 250-support plate; 300-driving cylinder;

[0028] 111 - disk body; 112 - toothed portion; 113 - center hole; 114 - weight reduction hole. DETAILED DESCRIPTION

[0029] Currently, in the field of aluminum wheel coating technology, the powder coating process requires the use of clamping devices. However, please continue to refer to Figure 1 and Figure 2When the wheel hub 010 is large in size, the existing double-headed clamp 100' is that the inclined surface 121' of the clamping column 120' contacts the rim 011 of the wheel hub 010, and the contact area is large, which is easy to cause powder sticking defects. In addition, due to the large weight of the double-headed clamp 100', the calibration accuracy of the manipulator is not high, and uneven clamping force will be generated when clamping the wheel hub 010, especially when clamping the wheel hub 010 with a thinner rim 011, which easily causes the rim 011 to deform. In addition, the structural characteristics of the double-headed clamp 100' also make its maintenance and calibration costs relatively high. Any wear or damage requires professional maintenance personnel to repair, which increases the maintenance cost.

[0030] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] Figure 3 A top view of the structure of a clamping disc 110 of a clamping device for hub spraying provided in this embodiment; Figure 4 A top view of the local structure of the clamping device for hub spraying provided in this embodiment when clamping the hub 010; Figure 5 The front view of the structure of the clamping device for wheel hub spraying provided in this embodiment when clamping the wheel hub 010. Figures 3 to 5 As shown, this embodiment provides a clamping device for wheel hub spraying, including a plurality of clamping assemblies 100 arranged at intervals along the circumference of the wheel hub 010. Specifically, the clamping assembly 100 includes a clamping disk 110, and the clamping disk 110 includes a disk body 111 and a toothed portion 112 arranged on the outer periphery of the disk body 111. The clamping disk 110 abuts against the rim 011 of the wheel hub 010 through the toothed portion 112, and along the axial direction of the wheel hub 010, the clamping disks 110 of the plurality of clamping assemblies 100 are located at the same position.

[0032] By providing a clamping device mainly composed of a plurality of clamping assemblies 100, when it is necessary to spray the wheel hub 010, the plurality of clamping assemblies 100 are distributed in the circumference of the wheel hub 010, and the wheel hub 010 is clamped by the abutment between the clamping discs 110 of the plurality of clamping assemblies 100 and the rim 011. The clamping disc 110 abuts against the rim 011 through the toothed portion 112, so that regardless of the diameter of the wheel hub 010, the clamping disc 110 and the rim 011 are in line-surface contact, which effectively reduces the contact area between the clamping disc 110 and the rim 011, so that the clamping device can be applied to the spraying of wheel hubs 010 of various sizes, and no powder sticking defects will be generated during the spraying process.

[0033] In addition, by setting the outer edge of the clamping disc 110 as the toothed portion 112, the clamping disc 110 can also be reduced in weight, making the structure of the clamping disc 110 lightweight, which is conducive to ensuring the calibration accuracy of the manipulator. Moreover, the outer edge of the clamping disc 110 is in the form of the toothed portion 112, so that each position of the clamping disc 110 along its circumference can be used as a position for contacting the rim 011, thereby eliminating the cumbersome steps of adjusting and calibrating the circumferential position of the clamping disc 110.

[0034] In addition, by setting the clamping plates 110 of multiple clamping assemblies 100 to be at the same position along the axial direction of the hub 010, the clamping plates 110 of each clamping assembly 100 can apply clamping force to the hub 010 in the same radial plane, which not only ensures reliable clamping but also prevents deflection of the hub 010.

[0035] Please continue to refer to Figure 3 and Figure 5 In this embodiment, the clamping assembly 100 may further include a connecting shaft 120 , wherein the disk body 111 is provided with a center hole 113 , and the disk body 111 is fixedly sleeved on the connecting shaft 120 through the center hole 113 .

[0036] This arrangement of the clamping assembly 100 facilitates its assembly. In addition, the arrangement of the center hole 113 can also reduce the weight of the clamping plate 110 to a certain extent.

[0037] Please continue to refer to Figure 3 In this embodiment, a plurality of weight-reducing holes 114 may be further provided on the disk body 111 , wherein the plurality of weight-reducing holes 114 are arranged around the central hole 113 .

[0038] By opening a plurality of weight-reducing holes 114 in the disk body 111, the weight of the clamping disk 110 can be effectively reduced, which is beneficial to the lightweight design of the clamping disk 110. On the one hand, it can ensure a higher calibration accuracy of the manipulator to avoid deformation of the rim 011 caused by uneven clamping force. On the other hand, it can also ensure the structural strength of the disk body 111 to extend the working life of the clamping disk 110.

[0039] Preferably, in this embodiment, the weight-reducing hole 114 is a circular hole.

[0040] The weight-reducing hole 114 is in the form of a circular hole, which facilitates the processing and manufacturing of the weight-reducing hole 114 .

[0041] In other embodiments, the weight-reducing hole 114 may also be configured as a rectangular hole or a triangular hole, etc.

[0042] Please continue to refer to Figure 3 In this embodiment, the number of the weight-reducing holes 114 is eight, and the eight weight-reducing holes 114 are arranged at equal intervals around the central hole 113 .

[0043] In this embodiment, the clamping plate 110 is an integrated structure.

[0044] By setting the clamping plate 110 as an integrated structure, on the one hand, the number of parts can be reduced and the clamping plate 110 does not need to be assembled, thereby improving the assembly efficiency of the clamping assembly 100. On the other hand, the maintenance and servicing of the clamping plate 110 can be completed without the need for professionals, which makes the maintenance and servicing process simpler and reduces maintenance costs.

[0045] Please continue to refer to Figure 3 In this embodiment, the diameter of the disk body 111 is a, the diameter of the clamping disk 110 is b, the diameter of the center hole 113 is c, and the diameter of the weight-reducing hole 114 is d, wherein 175mm<a<185mm, 185mm<b<190mm, 16mm<c<20mm, and 16mm<d<20mm.

[0046] By limiting the outer dimensions of the clamping plate 110 within the above range, while ensuring reliable clamping of the wheel hub 010, the weight of the clamping plate 110 can be effectively reduced, so that the calibration accuracy of the robot is higher and the clamping force on the rim 011 is more uniform, avoiding deformation of the thin rim 011.

[0047] As a specific embodiment, the diameter a of the disk body 111 is 180 mm, the diameter b of the clamping disk 110 is 190 mm, the diameter c of the center hole 113 is 18 mm, and the diameter d of the lightening hole 114 is 18 mm.

[0048] Please continue to refer to Figure 5 In this embodiment, along the axial direction of the hub 010, the size of the disc body 111 is e, and the size of the toothed portion 112 is f, wherein 7mm<e<9mm, 4mm<f<6mm. In other words, the thickness of the disc body 111 is e, and the thickness of the toothed portion 112 is f.

[0049] By limiting the thickness of the clamping plate 110 to the above range, the weight of the clamping plate 110 can be reduced while ensuring the structural strength of the clamping plate 110 .

[0050] As a specific embodiment, the thickness e of the disk body 111 is 8 mm, and the thickness f of the toothed portion 112 is 5 mm.

[0051] In this embodiment, by performing the above-mentioned design on the clamping plate 110, the total weight of the clamping plate 110 can be reduced to 0.59 kg. Compared with the weight of 1.89 kg of the double-headed clamp provided by the prior art, the weight is greatly reduced, thereby effectively improving the calibration accuracy of the manipulator to avoid deformation problems caused by the thinness of the rim 011.

[0052] Please continue to refer to Figure 5 In this embodiment, the clamping device may further include a mounting bracket 200. Specifically, the mounting bracket 200 includes a first side plate 210, a connecting plate 220 and a second side plate 230 which are connected in sequence in a U shape, wherein the connecting plate 220 is used to be fixedly connected to the end of the manipulator; two sliding shafts 240 are arranged side by side between the first side plate 210 and the second side plate 230, and the two clamping assemblies 100 are movably mounted on one sliding shaft 240, and the two clamping assemblies 100 are movably mounted on the other sliding shaft 240.

[0053] When the wheel hub 010 needs to be clamped, the two clamping assemblies 100 installed on each sliding shaft 240 can be moved to the end of the sliding shaft 240. At this time, the wheel hub 010 is located in the middle of the four clamping assemblies 100. Figure 5 As shown; then, by moving the clamping assembly 100 on the sliding shaft 240, the clamping assembly 100 is radially close to the wheel hub 010, so that the toothed portion 112 of the clamping disk 110 contacts the rim 011 of the wheel hub 010, and the wheel hub 010 is clamped by the clamping disk 110 of the clamping assembly 100. When the clamping of the wheel hub 010 needs to be released, the four clamping assemblies 100 can be moved radially away from the wheel hub 010 to release the abutment between the toothed portion 112 and the rim 011, so as to separate the clamping device from the wheel hub 010.

[0054] By setting the clamping device to the above-mentioned form, not only can the wheel hub 010 be reliably clamped, but also, when the size of the wheel hub 010 changes, only the position of the clamping assembly 100 needs to be adjusted to meet the clamping requirements of wheel hubs 010 of various sizes, with a wide range of adaptability and high versatility.

[0055] It should be noted that, in this embodiment, the specific structure and working principle of the manipulator can refer to the existing technology. It only needs to meet the position and posture change requirements during the painting operation of the wheel hub 010. This embodiment does not make any improvements on this, so it will not be repeated.

[0056] Please continue to refer to Figure 5 In this embodiment, the mounting bracket 200 may further include a support plate 250. Specifically, the support plate 250 is located between the first side plate 210 and the second side plate 230 and is fixedly connected to the connecting plate 220. The two sliding shafts 240 pass through the support plate 250, wherein the two clamping assemblies 100 installed on each sliding shaft 240 are respectively arranged on both sides of the support plate 250.

[0057] By setting the above-mentioned support plate 250 in the mounting bracket 200, on the one hand, the structure of the mounting bracket 200 can be strengthened, the strength of the mounting bracket 200 can be ensured, and the deformation of the mounting bracket 200 can be reduced. On the other hand, the two clamping assemblies 100 installed on each sliding shaft 240 can also be separated to avoid interference between them during movement.

[0058] In this embodiment, the clamping device for wheel hub spraying may further include a driving cylinder 300. Specifically, the number of the driving cylinders 300 may be four, and the four driving cylinders 300 are respectively arranged in one-to-one correspondence with the four clamping assemblies 100, wherein the cylinder body of the driving cylinder 300 is fixedly connected to the support plate 250, and the piston rod of the driving cylinder 300 is fixedly connected to the connecting shaft 120. This arrangement can not only realize the movement drive of the clamping disc 110, but also provide a reliable clamping force between the clamping disc 110 and the rim 011, thereby preventing the clamping disc 110 from slipping during the process of clamping the rim 011.

[0059] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

[0060] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0061] In the above embodiments, the descriptions of directions such as “upper”, “lower”, “side”, etc. are all based on the drawings.

[0062] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A clamping device for wheel hub spraying, characterized in that: The invention comprises a plurality of clamping assemblies (100) arranged at intervals along the circumference of a wheel hub (010), wherein the clamping assembly (100) comprises a clamping disk (110), wherein the clamping disk (110) comprises a disk body (111) and a toothed portion (112) arranged on the outer circumference of the disk body (111), wherein the clamping disk (110) abuts against the rim (011) of the wheel hub (010) via the toothed portion (112), and along the axial direction of the wheel hub (010), the clamping disks (110) of the plurality of clamping assemblies (100) are located at the same position.

2. The clamping device for wheel hub spraying according to claim 1, characterized in that: The clamping assembly (100) further comprises a connecting shaft (120), the disc body (111) is provided with a center hole (113), and the disc body (111) is fixedly sleeved on the connecting shaft (120) through the center hole (113).

3. The clamping device for wheel hub spraying according to claim 2, characterized in that: The disk body (111) is further provided with a plurality of weight-reducing holes (114), and the plurality of weight-reducing holes (114) are arranged around the central hole (113).

4. The clamping device for wheel hub spraying according to claim 3, characterized in that: The weight-reducing hole (114) is a circular hole.

5. The clamping device for wheel hub spraying according to claim 1, characterized in that: The clamping plate (110) is an integrated structure.

6. The clamping device for wheel hub spraying according to claim 4, characterized in that: The diameter of the disk body (111) is a, the diameter of the clamping disk (110) is b, the diameter of the center hole (113) is c, and the diameter of the weight-reducing hole (114) is d, wherein 175 mm < a < 185 mm, 185 mm < b < 190 mm, 16 mm < c < 20 mm, and 16 mm < d < 20 mm.

7. The clamping device for wheel hub spraying according to claim 1, characterized in that: Along the axial direction of the wheel hub (010), the size of the disc body (111) is e, and the size of the toothed portion (112) is f, wherein 7mm<e<9mm, and 4mm<f<6mm.

8. The clamping device for wheel hub spraying according to claim 1, characterized in that: The number of the clamping assemblies (100) is four.

9. The clamping device for wheel hub spraying according to claim 8, characterized in that: The clamping device also includes a mounting bracket (200), and the mounting bracket (200) includes a first side plate (210), a connecting plate (220) and a second side plate (230) which are connected in sequence in a U shape, wherein the connecting plate (220) is used to be fixedly connected to the end of the manipulator; two sliding shafts (240) are arranged side by side between the first side plate (210) and the second side plate (230), and the two clamping assemblies (100) are movably mounted on one of the sliding shafts (240), and the two clamping assemblies (100) are movably mounted on the other sliding shaft (240).

10. The clamping device for wheel hub spraying according to claim 9, characterized in that: The mounting bracket (200) further includes a support plate (250), wherein the support plate (250) is located between the first side plate (210) and the second side plate (230) and is fixedly connected to the connecting plate (220), and the two sliding shafts (240) pass through the support plate (250), wherein the two clamping assemblies (100) mounted on each sliding shaft (240) are respectively arranged on both sides of the support plate (250).

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