Coating device and coating equipment

Abstract

The utility model discloses a coating device and coating equipment, which are used for coating an annular product, and the coating device comprises a plurality of transmission mechanisms, each transmission mechanism comprises a transmission shaft, a plurality of groups of bevel gear sets and linkage gear sets with the same number as the bevel gear sets, each bevel gear set comprises a first bevel gear and a second bevel gear, the transmission shaft is sleeved with the first bevel gear, the first bevel gear is meshed with the second bevel gear, and the annular product is fixed to the linkage gear set; when the transmission shaft is driven to rotate, the transmission shaft drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the linkage gear set to rotate, and therefore the linkage gear set drives the annular product to synchronously rotate around the center shaft of the annular product. The utility model can solve the problem that the thicknesses of the front and side films of the annular product are not uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum coating, in particular to a coating device and coating equipment. Background Art

[0002] In the field of 3C decorative coating, the lens rings of electronic products such as mobile phones and tablets are generally circular in shape. During the physical vapor deposition coating process of such structural parts, due to the design defects of conventional circular ring fixtures, the circular ring cannot rotate around its circular central axis, resulting in a large angle difference between the position of the side of the circular ring and the relative position of the coating source, resulting in a difference in film thickness on the front and side of the product, and uneven color on the front and side, which cannot meet customer needs.

[0003] Therefore, it is necessary to provide a coating device and a coating equipment to solve the above problems existing in the prior art. Utility Model Content

[0004] The utility model aims to provide a coating device and coating equipment, which are used to solve the problem of uneven film thickness on the front and side surfaces of annular products.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] The utility model provides a coating device for coating an annular product, comprising:

[0007] A plurality of transmission mechanisms, each of which comprises a transmission shaft, a plurality of bevel gear sets and linkage gear sets of the same number as the bevel gear sets, each of which comprises a first bevel gear and a second bevel gear, the first bevel gear is sleeved on the transmission shaft, the first bevel gear and the second bevel gear are meshed, each of which comprises a plurality of linkage gears and linkage shafts of the same number as the linkage gears, the linkage gears are sleeved on the corresponding linkage shafts, each adjacent linkage gear is meshed, the second bevel gear is sleeved on one of the linkage shafts, and the annular product is connected to the corresponding linkage shaft;

[0008] When the transmission shaft is driven to rotate, the transmission shaft drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives one of the linkage shafts to rotate, and one of the linkage shafts drives the linkage gear thereon to rotate, thereby driving the meshing linkage gears to rotate, so as to drive the annular product on the corresponding linkage shaft to rotate synchronously around its center axis.

[0009] It can be seen from the above technical scheme that the utility model designs a transmission mechanism. When the transmission shaft is driven to rotate, the transmission shaft drives multiple sets of bevel gear sets to rotate synchronously, and the multiple sets of bevel gear sets drive the corresponding linkage gear sets to rotate, thereby realizing the synchronous rotation of the annular product around its annular center axis, achieving the continuous change of the relative angle between the front and side of the annular product and the coating target material, achieving the effect of uniform coating on the front and side of the annular product, ensuring the uniformity of the color of the front and side of the annular product, simple and easy to operate, and has wide versatility in the coating field. It effectively solves the current bottleneck of the coating industry for annular products and improves the appearance quality of annular products.

[0010] Further, it also includes a gripping part with the same number as the linkage shafts, and the gripping part is connected to the corresponding linkage shafts. Each group of linkage gear sets includes five linkage shafts and five linkage gears. The five linkage gears are respectively sleeved on the corresponding five linkage shafts. The five linkage gears are respectively a first linkage gear, a second linkage gear, a third linkage gear, a fourth linkage gear and a fifth linkage gear. The second bevel gear is sleeved on the first linkage shaft, and the first linkage gear is sleeved on the first linkage shaft and is located on one side of the second bevel gear. The first linkage gear is meshed with the second linkage gear, the second linkage gear is meshed with the third linkage gear, the third linkage gear is meshed with the fourth linkage gear, and the fourth linkage gear is meshed with the fifth linkage gear. The second bevel gear rotates to drive the first linkage gear to rotate, the first linkage gear drives the second linkage gear to rotate, the second linkage gear drives the third linkage gear to rotate, the third linkage gear drives the fourth linkage gear to rotate, and the fourth linkage gear drives the fifth linkage gear to rotate, so as to drive the annular product on the gripping part connected to the corresponding linkage shaft to rotate synchronously around its central axis. Its beneficial effects are: a clamping part is provided to facilitate fixing of the product; each linkage gear set is provided with five linkage shafts and five linkage gears, and there are also five clamping parts, which can simultaneously ensure that each linkage gear set drives five annular products to rotate synchronously around their central axis, thereby improving the coating efficiency.

[0011] Furthermore, it also includes an upper fixed plate and a lower fixed plate, the upper fixed plate is evenly provided with the same number of first bearings as the transmission shaft along its circumference, the lower fixed plate is evenly provided with the same number of second bearings as the first bearings along its circumference, and the transmission shaft is installed between the upper fixed plate and the lower fixed plate through the first bearing and the second bearing. Its beneficial effect is that the transmission shaft is installed between the upper fixed plate and the lower fixed plate through the first bearing and the second bearing, so that the transmission shaft can rotate freely.

[0012] Furthermore, each of the transmission mechanisms further comprises a support rod, the support rod being used to carry the plurality of linkage gear sets, the support rod being fixedly disposed between the upper fixed plate and the lower fixed plate and being located on one side of the transmission shaft. The beneficial effect thereof is that the support rod is disposed as a mounting frame, and the linkage gear set is mounted thereon.

[0013] Furthermore, it also includes a driving rod and a base, wherein the driving rod is sequentially arranged at the center of the upper fixed plate, the lower fixed plate and the base, and the driving rod is used to drive the plurality of transmission mechanisms to rotate. The beneficial effect is that the driving rod provides driving force for the transmission mechanism.

[0014] Furthermore, it also includes a driving mechanism, which is arranged below the lower fixed plate, and the driving rod is driven to rotate, driving the driving mechanism to rotate, and the driving mechanism drives the transmission shaft to rotate. The beneficial effect is that the driving mechanism transmits the driving force of the driving rod to the transmission mechanism.

[0015] Furthermore, the driving mechanism includes a first gear and a second gear having the same number as the transmission shaft, the first gear and the second gear are meshed, the second gear is sleeved on the transmission shaft and is located below the lower fixed plate, the driving rod is driven to rotate, the driving rod drives the first gear to rotate, the first gear drives the second gear to rotate, and the transmission shaft is driven to rotate. The beneficial effect is that the driving force is provided to the transmission mechanism through the meshing transmission of the first gear and the second gear, which is simple and easy to operate.

[0016] Furthermore, the driving mechanism further comprises a third bearing, which is sleeved on the driving rod and located below the first gear. The beneficial effect is that the provision of the third bearing reduces the rotation resistance of the driving rod.

[0017] Furthermore, each linkage gear set also includes five fourth bearings, each of which is sleeved on the corresponding linkage shaft and located on one side of the corresponding linkage gear, and the linkage shaft matched with the fourth bearing is driven to rotate, so as to drive the annular product on the gripping part to rotate synchronously around its central axis. The beneficial effect is that the setting of the fourth bearing reduces the rotation resistance of the linkage shaft.

[0018] The utility model also provides a coating device, comprising:

[0019] A plurality of said coating devices;

[0020] A main driving disk and an upper supporting disk, a plurality of coating devices are arranged between the main driving disk and the upper supporting disk, and the main driving disk is used to drive the coating devices.

[0021] Its beneficial effect is that during the rotation of the main drive disk and the self-rotation of the drive rod, the whole furnace product can synchronously rotate around the central axis of the main drive disk and the central axis of the drive rod, and the multi-axis rotation of the annular product can be realized, so that the film thickness on the front and side of the annular product is uniform, and the color uniformity of the front and side of the annular product is achieved. The annular products are loaded in batches for coating, and the deposition of thin films is realized by the fixed source on the coating equipment, so as to achieve the purpose of industrial coating application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a coating device according to an embodiment of the utility model;

[0023] Figure 2 for Figure 1 The partial schematic diagram shown;

[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 for Figure 3 The internal structure diagram shown;

[0026] Figure 5 for Figure 2 Schematic diagram of the internal structure at B in the middle.

[0027] In the figure: 1. transmission mechanism; 11. transmission shaft; 12. bevel gear set; 121. first bevel gear; 122. second bevel gear; 13. linkage gear set; 131. linkage gear; 132. linkage shaft; 133. fourth bearing; 14. support rod; 2. gripping part; 3. upper fixed plate; 31. first bearing; 4. lower fixed plate; 41. second bearing; 5. driving rod; 6. base; 7. driving mechanism; 71. first gear; 72. second gear; 73. third bearing; 8. annular product. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with general skills in the field to which the utility model belongs. "Including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0029] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0030] like Figure 1-Figure 5 As shown, an embodiment of the utility model provides a coating device, for example, coating an annular product 8 to be coated by physical vapor deposition, comprising: a plurality of transmission mechanisms 1. The coating surface of the annular product 8 includes a front face and a side face. The annular product 8 is fixed at a corresponding position of the transmission mechanism 1. The transmission mechanism 1 is designed to enable the annular product 8 to rotate around the central axis of the ring, so that the front face and the side face of the annular product 8 are uniformly coated. The number of transmission mechanisms 1 can be specifically set according to actual needs, for example, six transmission mechanisms 1 are set.

[0031] Each transmission mechanism 1 includes a transmission shaft 11, multiple bevel gear sets 12 and a linkage gear set 13. The transmission shaft 11 drives the multiple bevel gear sets 12 to rotate, and the multiple bevel gear sets 12 drive the corresponding linkage gear sets 13 to rotate, so as to realize the self-rotation of the annular product 8 connected to the linkage gear set 13 around its central axis. The number of linkage gear sets 13 is the same as that of the bevel gear sets 12, and the positions of the two are corresponding. The specific number of bevel gear sets 12 and linkage gear sets 13 is specifically set according to the length of the transmission shaft 11. For example, there are three bevel gear sets 12, and correspondingly, there are also three linkage gear sets 13. Three bevel gear sets 12 are sleeved on the transmission shaft 11, that is, each transmission mechanism 1 includes one transmission shaft 11, three bevel gear sets 12 and three linkage gear sets 13. Each bevel gear set 12 includes a first bevel gear 121 and a second bevel gear 122. The first bevel gear 121 is sleeved on the transmission shaft 11. The first bevel gear 121 and the second bevel gear 122 are meshed. Each linkage gear set 13 includes a plurality of linkage gears 131 and a linkage shaft 132. The number of the linkage shafts 132 and the linkage gears 131 is the same, and the positions of the two are corresponding. The linkage gears 131 are sleeved on the corresponding linkage shafts 132. Each adjacent linkage gear 131 is meshed to achieve linkage. The second bevel gear 122 is sleeved on one of the linkage shafts 132. The annular product 8 is connected to the corresponding linkage shaft 132. The connection method between the annular product 8 and the linkage shaft 132 includes indirect connection.

[0032] When the transmission shaft 11 is driven to rotate, the transmission shaft 11 drives the first bevel gear 121 to rotate. The first bevel gear 121 drives the second bevel gear 122 to rotate. The second bevel gear 122 drives one of the linkage shafts 132 to rotate. One of the linkage shafts 132 drives the linkage gear 131 thereon to rotate, thereby driving the meshing linkage gears 131 to rotate, so as to drive the annular product 8 on the corresponding linkage shaft 132 to rotate synchronously around its central axis.

[0033] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of the utility model, the coating device also includes a gripping part 2. The gripping part 2 is used to fix the annular product 8. The number of the gripping parts 2 is the same as that of the linkage shaft 132. The gripping part 2 is connected to the corresponding linkage shaft 132. Each group of linkage gear sets 13 includes five linkage shafts 132 and five linkage gears 131. The five linkage gears 131 are respectively sleeved on the corresponding five linkage shafts 132. The five linkage gears 131 are respectively the first linkage gear, the second linkage gear, the third linkage gear, the fourth linkage gear and the fifth linkage gear from top to bottom. The five linkage shafts 132 corresponding to the first linkage gear, the second linkage gear, the third linkage gear, the fourth linkage gear and the fifth linkage gear are respectively the first linkage shaft, the second linkage shaft, the third linkage shaft, the fourth linkage shaft and the fifth linkage shaft. The second bevel gear 122 is sleeved on the first linkage shaft 132, and the first linkage gear is sleeved on the first linkage shaft and is located on one side of the second bevel gear 122. The first linkage gear meshes with the second linkage gear, the second linkage gear meshes with the third linkage gear, the third linkage gear meshes with the fourth linkage gear, and the fourth linkage gear meshes with the fifth linkage gear. The second bevel gear 122 rotates, driving the first linkage gear to rotate, and driving the annular product 8 on the gripping part 2 connected to the first linkage shaft to rotate. The first linkage gear rotates, driving the second linkage gear to rotate, thereby driving the annular product 8 on the gripping part 2 connected to the second linkage shaft to rotate. The second linkage gear rotates, driving the third linkage gear to rotate, thereby driving the annular product 8 on the gripping part 2 connected to the third linkage shaft to rotate. The third linkage gear rotates, driving the fourth linkage gear to rotate, thereby driving the annular product 8 on the gripping part 2 connected to the fourth linkage shaft to rotate. The fourth linkage gear rotates, driving the fifth linkage gear to rotate, thereby driving the annular product 8 on the gripping part 2 connected to the fourth linkage shaft to rotate. A group of bevel gear sets 12 and a group of linkage gear sets 13 cooperate with each other, and other cooperating bevel gear sets 12 and linkage gear sets 13 are independent of each other.

[0034] like Figure 2 and Figure 5As shown, in some embodiments of the utility model, the coating device further includes an upper fixed disk 3 and a lower fixed disk 4. The upper fixed disk 3 is uniformly provided with first bearings 31 along its circumference, which is the same number as the transmission shaft 11. The lower fixed disk 4 is uniformly provided with second bearings 41 along its circumference, which is the same number as the first bearings 31. The transmission shaft 11 is installed between the upper fixed disk 3 and the lower fixed disk 4 through the first bearings 31 and the second bearings 41 to achieve free rotation. For example, the number of transmission shafts 11 corresponding to six transmission mechanisms 1 is six, that is, six first bearings 31 and six second bearings 41 are provided to uniformly arrange the corresponding six transmission shafts 11 between the upper fixed disk 3 and the lower fixed disk 4 along the circumference of the upper fixed disk 3 and the lower fixed disk 4. Thus, the six transmission mechanisms 1 are fixed by the upper fixed disk 3 and the lower fixed disk 4.

[0035] like Figure 1-Figure 2 As shown, in some embodiments of the utility model, each transmission mechanism 1 further includes a support rod 14. The support rod 14 is used to carry multiple sets of linkage gear sets 13. The support rod 14 is fixedly disposed between the upper fixed plate 3 and the lower fixed plate 4, and is located on one side of the transmission shaft 11. For example, the number of support rods 14 corresponding to six transmission mechanisms 1 is six, and the six support rods 14 are evenly distributed between the upper fixed plate 3 and the lower fixed plate 4 along the circumference of the upper fixed plate 3 and the lower fixed plate 4, and the six support rods 14 are respectively fixed to one side of the transmission shaft 11.

[0036] like Figure 1-Figure 2 As shown, in some embodiments of the utility model, the coating device also includes a driving rod 5 and a base 6. The driving rod 5 is sequentially arranged at the center positions of the upper fixed disk 3, the lower fixed disk 4 and the base 6, and the upper fixed disk 3, the lower fixed disk 4 and the base 6 are connected in series from top to bottom. The driving rod 5 is used to drive multiple transmission mechanisms 1 to rotate. The driving rod 5, the transmission shaft 11 and the support rod 14 are arranged between the upper fixed disk 3 and the lower fixed disk 4 from the inside to the outside relative to the center position of the upper fixed disk 3 and the lower fixed disk 4. And the axes of the driving rod 5, the transmission shaft 11 and the support rod 14 are parallel. For example, one driving rod 5 corresponds to six transmission shafts 11 and six support rods 14.

[0037] like Figure 2 and Figure 5 As shown, in some embodiments of the present invention, the coating device further comprises a driving mechanism 7. The driving mechanism 7 is used to drive the transmission mechanism 1 to rotate. The driving mechanism 7 is arranged below the lower fixed plate 4, and the driving rod 5 is driven to rotate, driving the driving mechanism 7 to rotate, so that the driving mechanism 7 drives the transmission shaft 11 to rotate.

[0038] like Figure 1 , Figure 2 and Figure 5As shown, in some embodiments of the utility model, the driving mechanism 7 includes a first gear 71 and a second gear 72. The first gear 71 and the second gear 72 are meshed with each other. The number of the second gears 72 is the same as that of the transmission shaft 11. That is, the six second gears 72 are all meshed with one first gear 71, and one first gear 71 drives the six second gears to rotate synchronously. The second gear 72 is sleeved on the transmission shaft 11 and is located below the lower fixed plate 4. The driving rod 5 is driven to rotate, the driving rod 5 drives the first gear 71 to rotate, and the first gear 71 drives the second gear 72 to rotate, so as to drive the transmission shaft 11 to rotate. Thereby, the three sets of bevel gear sets sleeved on the transmission shaft 11 are synchronously rotated.

[0039] like Figure 2 and Figure 5 As shown, in some embodiments of the present invention, the driving mechanism 7 further includes a third bearing 73. The third bearing 73 is sleeved on the driving rod 5 and is located below the first gear 71. The third bearing 73 controls the driving rod 5 to realize axial and radial rotation, thereby reducing the rotation resistance of the driving rod 5.

[0040] like Figure 2 and Figure 4 As shown, in some embodiments of the utility model, each linkage gear set 13 also includes five fourth bearings 133. Each fourth bearing 133 is sleeved on the corresponding linkage shaft 132 and is located on one side of the corresponding linkage gear 131. The linkage shaft 132 matched with the fourth bearing 133 is driven to rotate, so as to drive the annular product 8 on the gripping part 2 to rotate synchronously around its central axis. The fourth bearing 133 controls the linkage shaft 132 to realize axial and radial rotation, thereby reducing the rotation resistance of the linkage shaft 132. When the linkage gear 131 is rotated by external force, the linkage shaft 132 is driven to rotate. Since the linkage shaft 132 and the fourth bearing 133 cooperate, the rotation accuracy is increased, thereby driving the gripping part 2 to rotate synchronously with the linkage gear 131. Each support rod is provided with the same number of mounting holes as the fourth bearing 133 for mounting three linkage gear sets 13, that is, the number of mounting holes provided on each support rod 14 is fifteen. A snap ring is arranged in the mounting hole to clamp between the inner diameter and the outer diameter of each fourth bearing 133 , so that the fourth bearing 133 is ensured not to be shifted when rotating in the mounting hole.

[0041] An embodiment of the utility model further provides a coating device, comprising: a plurality of coating devices; a main driving disk and an upper supporting disk, wherein the plurality of coating devices are arranged between the main driving disk and the upper supporting disk, and the main driving disk is used to drive the coating devices.

[0042] Multiple coating devices are loaded between the main drive disk and the upper support disk to fix and support the coating devices and provide the driving force required for the coating devices to rotate, thereby realizing the multi-axis rotation function of the coating devices. The base 6 in the coating device is connected to the main drive disk, and the driving rod 5 in the coating device is in contact with the main drive disk, thereby realizing power transmission. That is, the main drive disk drives the driving rod 5 to rotate, thereby driving the first gear 71 to rotate, the first gear 71 drives the second gear 72 to rotate, the second gear 72 drives the transmission shaft 11 to rotate, the transmission shaft 11 drives the bevel gear set 12 to rotate, the bevel gear set 12 drives the linkage gear set 13 to rotate, and the linkage gear set 13 drives the gripping part 2 to rotate, so that the annular product 8 rotates synchronously. In the process of the rotation of the main drive disk and the self-rotation of the driving rod, the synchronous rotation of the whole furnace product around the central axis of the main drive disk and the central axis of the driving rod is realized, and the multi-axis rotation of the annular product is realized, so that the film thickness of the front and side of the annular product is uniform, and the color uniformity of the front and side of the annular product is achieved. The ring-shaped products are loaded in batches for coating, and the deposition of thin films is achieved by the fixed source on the coating equipment, thus achieving the purpose of industrial coating application.

[0043] In summary, the utility model designs a transmission mechanism. When the driving rod drives the transmission shaft to rotate, the transmission shaft drives multiple sets of bevel gear sets to rotate synchronously. The multiple sets of bevel gear sets drive the corresponding linkage gear sets to rotate, thereby realizing the synchronous rotation of the annular product around its annular center axis, achieving the continuous change of the relative angle between the front and side of the annular product and the coating target material, achieving the effect of uniform coating on the front and side of the annular product, ensuring the uniformity of color on the front and side of the annular product, simple and easy to operate, and having wide versatility in the coating field. It effectively solves the current bottleneck of the coating industry for annular products and improves the appearance quality of annular products.

[0044] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as described in the claims. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. A coating device for coating an annular product, characterized in that: include: A plurality of transmission mechanisms, each of which comprises a transmission shaft, a plurality of bevel gear sets and linkage gear sets of the same number as the bevel gear sets, each of which comprises a first bevel gear and a second bevel gear, the first bevel gear is sleeved on the transmission shaft, the first bevel gear and the second bevel gear are meshed, each of which comprises a plurality of linkage gears and linkage shafts of the same number as the linkage gears, the linkage gears are sleeved on the corresponding linkage shafts, each adjacent linkage gear is meshed, the second bevel gear is sleeved on one of the linkage shafts, and the annular product is connected to the corresponding linkage shaft; When the transmission shaft is driven to rotate, the transmission shaft drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives one of the linkage shafts to rotate, and one of the linkage shafts drives the linkage gear thereon to rotate, thereby driving the meshing linkage gears to rotate, so as to drive the annular product on the corresponding linkage shaft to rotate synchronously around its center axis.

2. The coating device according to claim 1, characterized in that: The invention also includes a gripping part with the same number as the linkage shafts, and the gripping part is connected to the corresponding linkage shafts. Each linkage gear set includes five linkage shafts and five linkage gears. The five linkage gears are respectively sleeved on the corresponding five linkage shafts. The five linkage gears are respectively a first linkage gear, a second linkage gear, a third linkage gear, a fourth linkage gear and a fifth linkage gear. The second bevel gear is sleeved on the first linkage shaft. The first linkage gear is sleeved on the first linkage shaft and is located on one side of the second bevel gear. The first linkage gear is meshed with the second linkage gear, the second linkage gear is meshed with the third linkage gear, the third linkage gear is meshed with the fourth linkage gear, and the fourth linkage gear is meshed with the fifth linkage gear. The second bevel gear rotates to drive the first linkage gear to rotate, the first linkage gear drives the second linkage gear to rotate, the second linkage gear drives the third linkage gear to rotate, the third linkage gear drives the fourth linkage gear to rotate, and the fourth linkage gear drives the fifth linkage gear to rotate, so as to drive the annular product on the gripping part connected to the corresponding linkage shaft to rotate synchronously around its central axis.

3. The coating device according to claim 1, characterized in that: It also includes an upper fixed plate and a lower fixed plate, wherein the upper fixed plate is evenly provided with first bearings having the same number as the transmission shaft along its circumference, and the lower fixed plate is evenly provided with second bearings having the same number as the first bearings along its circumference, and the transmission shaft is installed between the upper fixed plate and the lower fixed plate through the first bearings and the second bearings.

4. The coating device according to claim 3, characterized in that: Each of the transmission mechanisms further includes a support rod, which is used to carry a plurality of linkage gear sets. The support rod is fixedly disposed between the upper fixed plate and the lower fixed plate and is located on one side of the transmission shaft.

5. The coating device according to claim 3, characterized in that: It also includes a driving rod and a base. The driving rod is sequentially arranged through the center positions of the upper fixed plate, the lower fixed plate and the base, and the driving rod is used to drive the multiple transmission mechanisms to rotate.

6. The coating device according to claim 5, characterized in that: It also includes a driving mechanism, which is arranged below the lower fixed plate. The driving rod is driven to rotate, driving the driving mechanism to rotate, and the driving mechanism drives the transmission shaft to rotate.

7. The coating device according to claim 6, characterized in that: The driving mechanism includes a first gear and a second gear having the same number as the transmission shaft, the first gear and the second gear are meshed with each other, the second gear is sleeved on the transmission shaft and is located below the lower fixed plate, the driving rod is driven to rotate, the driving rod drives the first gear to rotate, the first gear drives the second gear to rotate, so as to drive the transmission shaft to rotate.

8. The coating device according to claim 7, characterized in that: The driving mechanism further comprises a third bearing, and the third bearing is sleeved on the driving rod and is located below the first gear.

9. The coating device according to claim 2, characterized in that: Each linkage gear set also includes five fourth bearings, each of which is sleeved on the corresponding linkage shaft and located on one side of the corresponding linkage gear. The linkage shaft matched with the fourth bearing is driven to rotate to drive the annular product on the clamping part to rotate synchronously around its center axis.

10. A coating device, characterized in that: include: A plurality of coating devices according to any one of claims 1 to 9; A main driving disk and an upper supporting disk, a plurality of coating devices are arranged between the main driving disk and the upper supporting disk, and the main driving disk is used to drive the coating devices.

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