Film coating clamp suitable for mobile phone back plate with five plated surfaces

Abstract

The utility model discloses a film plating clamp suitable for a mobile phone back plate with five plating surfaces, which comprises a revolution workpiece frame, a clamp support, a rotating mechanism, an angle adjusting mechanism, a universal joint and a product hanging plate, the clamp support is supported by the revolution workpiece frame, the rotating mechanism is arranged on the clamp support, and the angle adjusting mechanism is arranged on the clamp support. A rotating output shaft of the rotating mechanism is connected with the symmetric center of the back surface of the product hanging plate through a universal joint; the angle adjusting mechanism comprises telescopic assemblies, the telescopic assemblies are arranged on the four sides of the rotating output shaft respectively, each telescopic assembly comprises a telescopic motor and a telescopic rod, the telescopic rods are arranged on the clamp support in a sliding mode, the telescopic motors drive the telescopic rods to do telescopic motion, and the ends of the telescopic rods abut against the back face of the product hanging plate. The product hanging plate can swing in different directions and at different angles through telescopic cooperation of the telescopic rod. According to the utility model, the mobile phone back plate needing to be coated can be driven to perform multi-dimensional movement, so that the mobile phone back plate with five coating surfaces can be coated more uniformly.

Description

Technical Field

[0001] The utility model relates to the technical field of coating of a mobile phone back plate with five coating surfaces, in particular to a coating fixture suitable for a mobile phone back plate with five coating surfaces. Background Art

[0002] Mobile phones have become an indispensable communication tool for people in modern life, and mobile phone products are constantly being updated. In addition to the continuous upgrading of functions, the appearance of mobile phones, especially the colors, are rich and colorful, from imitation gold, imitation rose gold, black, black with blue, etc., and gradually develop into blue, pink, green, fantasy colors, gradient colors, etc.

[0003] The color of a mobile phone is related to the film layer of its shell. Currently, the film layer of a mobile phone shell is mostly prepared by magnetron sputtering reactive coating technology, or ion plating technology. The colors displayed by ion plating are mainly divided into two categories: the original color of the film layer and the interference color of the film layer. The former is an opaque film layer, and its color is determined by the composition and structure of the film layer; the latter is a transparent or translucent film layer, and its color is the interference color generated by the refractive index and film thickness of the film layer. At present, the color of the opaque film layer that can be synthesized by ion plating is not rich enough. Some manufacturers use the interference color of the transparent film superimposed on the original color of the opaque film to obtain richer colors. Whenever interference color development is used, it is related to the film thickness.

[0004] The mobile phone casing is basically a special-shaped workpiece with a complex appearance. During the coating process, the target plasma emitted from the sputtering target surface is fired at the surfaces of the special-shaped workpiece in different directions. Due to the different incident angles, the target-substrate distance is also different, which will inevitably affect the different deposited film thicknesses and lead to different interference colors. This is a difficult problem currently encountered by the industry and must be solved as soon as possible. The solution to this problem is generally achieved by improving the workpiece hanger. A fixture has been developed that can automatically move back and forth to keep the surface to be plated of the workpiece with a constant target / substrate distance. A fixture has also been developed that can tilt the surface to be plated of the workpiece to change the incident angle with the target surface. The above-mentioned improved fixture has a certain improvement effect on the plating of the mobile phone middle frame, but it cannot fully meet the coating requirements of more complex mobile phone cover plates.

[0005] Recently, it is required to coat interference film on the back cover of mobile phones with four sides. The back cover of the mobile phone is rectangular, with a large flat surface, narrow side surfaces, two short and two long sides, and four corners with arc transitions. The outward surface is the surface to be plated, that is, there are five surfaces to be plated in different directions. In the coating of interference film, it is quite difficult to ensure that all the surfaces to be plated of the above-mentioned back cover can be deposited evenly. Because it is affected by many factors, including the target-base distance of the plated surface, the incident angle, the time of crossing the target surface, and the non-conformal effect of the plasma sheath. Therefore, it is necessary to design a fixture suitable for the above-mentioned back cover of the mobile phone. It is necessary to make the fixture rotate and swing at the same time to make multi-dimensional motion. This will inevitably complicate the fixture and reduce the load of the workpiece. For the above-mentioned back cover of the mobile phone with four sides, we propose a multi-dimensional motion coating technology solution to solve the problem of uniform coating. Utility Model Content

[0006] The utility model aims to provide a coating fixture for a mobile phone back plate with five coating surfaces, which can drive the mobile phone back plate that needs to be coated to perform multi-dimensional movement.

[0007] The purpose of the utility model is achieved through the following technical solutions:

[0008] A coating fixture suitable for a mobile phone back panel with five coating surfaces, characterized in that it includes a revolving workpiece frame, a fixture bracket, a rotating mechanism, an angle adjustment mechanism, a universal joint and a product hanging plate, the fixture bracket is supported by the revolving workpiece frame, the rotating mechanism is arranged on the fixture bracket, the rotating output shaft of the rotating mechanism is connected to the symmetry center of the back side of the product hanging plate through the universal joint, and the rotating mechanism can drive the product hanging plate to rotate; the angle adjustment mechanism includes a telescopic component, and the telescopic components are respectively arranged on the four sides of the rotating output shaft, the telescopic component includes a telescopic motor and a telescopic rod, the telescopic rod is slidably arranged on the fixture bracket, the telescopic motor drives the telescopic rod to perform telescopic movement, the end of the telescopic rod abuts against the back side of the product hanging plate, and the telescopic cooperation of the telescopic rod can make the product hanging plate swing in different directions and angles.

[0009] Furthermore, a revolution disk is provided in a coating chamber for coating the back panel of a mobile phone, and a plurality of coating fixtures are mounted on the revolution disk through a revolution workpiece frame and revolve together with the revolution disk.

[0010] Furthermore, the revolving workpiece frame includes an upper turntable and a middle support plate, the middle support plate is located between the upper turntable and the revolving turntable, and the upper turntable and the middle support plate are fixedly connected to the revolving turntable; the rotating mechanism includes a first bevel gear, a hanging rod, a second bevel gear and a rotating drive component, the clamp bracket is fixed on the middle support plate, the first bevel gear is rotatably mounted on the clamp bracket, the second bevel gear is arranged on the rotating output shaft, the first bevel gear is meshed with the second bevel gear, the hanging rod passes through the first bevel gear and is fixedly connected to the first bevel gear, the upper end of the hanging rod passes through the sliding hole on the upper turntable, the rotating drive component is installed on the revolving turntable, and the lower end of the hanging rod is connected to the rotating drive component.

[0011] Furthermore, the rotating drive component includes a bearing seat, a rotating shaft and a self-rotating gear. The rotating shaft is installed on the revolving disk through the bearing seat. The upper end of the rotating shaft is connected to the hanging rod. The self-rotating gear is arranged at the lower end of the rotating shaft. A fixed gear coaxial with the revolving disk is provided in the coating chamber, and the self-rotating gear is meshed with the fixed gear.

[0012] Furthermore, another structure of the revolving workpiece rack includes a translation bracket, and a translation bracket is respectively set corresponding to each clamp bracket. The translation bracket is slidably installed on the revolving disk, and the clamp bracket and its upper components are driven by the translation bracket to translate back and forth toward the target surface.

[0013] Furthermore, an upper translation plate, a middle translation plate and a lower translation plate are respectively provided at the upper, middle and lower positions of the translation bracket, the upper translation plate, the middle translation plate and the lower translation plate are connected together and installed on the revolving disk through a sliding mechanism, and are driven to translate back and forth by the sliding mechanism; the rotating mechanism includes a first bevel gear, a hanging rod, a second bevel gear and a rotating drive component, the clamp bracket is fixed on the middle translation plate, the first bevel gear is rotatably installed on the clamp bracket, the second bevel gear is arranged on the rotating output shaft, the first bevel gear is meshed with the second bevel gear, the hanging rod passes through the first bevel gear and is fixedly connected to the first bevel gear, the upper end of the hanging rod passes through the sliding hole on the upper translation plate, the rotating drive component is installed on the lower translation plate, and the lower end of the hanging rod is connected to the rotating drive component.

[0014] Furthermore, the rotating drive component includes a bearing seat, a rotating shaft and a self-rotating servo motor. The rotating shaft is installed on the lower translation plate through the bearing seat. The upper end of the rotating shaft is connected to the hanging rod. The self-rotating servo motor is connected to the lower end of the rotating shaft. The rotating shaft and the hanging rod are driven to rotate by the self-rotating servo motor.

[0015] Furthermore, the fixture bracket is provided with a gear bracket, and the first bevel gear is rotatably mounted on the gear bracket.

[0016] Furthermore, a round head is provided at the front end of the telescopic rod, and the round head is pressed against the back side of the product hanging plate.

[0017] Furthermore, the clamp bracket is provided with an upright support plate, the telescopic assembly is placed on the support plate, the telescopic assembly also includes a screw and a slider, an oil-free bushing is provided on the support plate corresponding to each telescopic assembly, the telescopic rod slides through the oil-free bushing, the slider is vertically fixed to the rear end of the telescopic rod, the telescopic motor is fixedly installed on the side of the support plate, the screw is arranged at the output end of the telescopic motor, the screw is parallel to the telescopic rod, and the screw fits in the internal threaded hole on the slider.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model can drive the mobile phone back plate on the product hanging plate to rotate through the rotating mechanism, and during the rotation process can simultaneously drive the mobile phone back plate on the product hanging plate to swing to different angles through the angle adjustment mechanism, so that the mobile phone back plate can perform multi-dimensional movement, so that during the coating process, the side surfaces of the mobile phone back plate can be tilted toward the target surface in turn, so as to better perform uniform coating on the mobile phone back plate with five coating surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional schematic diagram of the coating fixture of the first embodiment of the utility model;

[0021] Figure 2 It is a three-dimensional schematic diagram of the coating fixture of the first embodiment of the utility model, in which the rotating driving component is hidden;

[0022] Figure 3 1 is a rear view schematic diagram of the coating fixture of the first embodiment of the utility model, in which the rotating drive component is hidden;

[0023] Figure 4 1 is a top view schematic diagram of the coating fixture of the first embodiment of the utility model, in which the rotating driving component is hidden;

[0024] Figure 5 It is a cross-sectional schematic diagram of the coating fixture of the second embodiment of the utility model.

[0025] Meaning of reference numerals in the figure:

[0026] 1-screw; 2-slider; 3-telescopic motor; 4-product hanging plate; 5-telescopic rod; 6-universal joint; 7-second bevel gear; 8-second deep groove ball bearing; 9-elastic retaining ring for second shaft; 10-elastic retaining ring for second hole; 11-support plate; 12-first bevel gear; 13-first deep groove ball bearing; 14-elastic retaining ring for first hole; 15-gear bracket; 16-elastic retaining ring for first shaft; 17-hanging rod; 18-dust cover; 19-elastic retaining ring for fourth hole Retaining ring; 20-hexagonal bolt; 21-sleeve; 22-bearing seat; 23-third deep groove ball bearing; 24-elastic retaining ring for the third hole; 25-rotating shaft; 26-rotating gear; 27-flat key; 28-washer; 29-hexagonal nut; 30-revolving plate; 31-middle support plate; 32-upper turntable; 33-oil-free bushing; 34-round head; 35-rotating output shaft; 36-mobile phone back plate; 37-upper translation plate; 38-middle translation plate; 39-lower translation plate. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with embodiments.

[0028] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] Embodiment 1:

[0032] like Figures 1 to 4 The coating fixture of the present embodiment is suitable for a mobile phone back panel with five coating surfaces, which includes a revolving workpiece frame, a fixture bracket, a rotating mechanism, an angle adjustment mechanism, a product hanging plate 4 and a universal joint 6.

[0033] Among them, a revolution disk 30 is provided in the existing coating room. When in use, a plurality of coating fixtures are installed around the revolution disk 30. The coating fixtures are installed on the revolution disk 30 through a revolution workpiece holder. During the coating process, the revolution disk 30 drives the coating fixtures to revolve as a whole. A plurality of targets are provided around the revolution disk 30 in the coating room, and the surface of the target facing the revolution disk 30 is the target surface.

[0034] The revolving workpiece frame of this embodiment includes an upper turntable 32, a middle support plate 31 and a revolving plate 30, which are respectively located at the upper, middle and lower positions. The upper turntable 32 and the middle support plate 31 are fixedly connected to the revolving plate 30 through a central axis column (the central axis column is not shown in the figure), and revolve together with the revolving plate 30.

[0035] The fixture bracket of this embodiment includes a gear bracket 15 and a support plate 11. The gear bracket 15 is horizontally arranged and fixedly connected to the middle support plate 31 by bolts. The support plate 11 is vertically fixedly connected to the outwardly extending end of the gear bracket 15.

[0036] The rotating mechanism includes a rotating output shaft 35, a first bevel gear 12, a hanging rod 17, a second bevel gear 7 and a rotating driving component. The first bevel gear 12 is rotatably mounted on the gear bracket 15 through a first deep groove ball bearing 13. The first deep groove ball bearing 13 is limited in the mounting hole through a first hole elastic retaining ring 14. The boss on the first bevel gear 12 abuts against the top of the first deep groove ball bearing 13. The lower end of the first bevel gear 12 is limited by a first shaft elastic retaining ring 16. The second bevel gear 7 is fixed on the rotating output shaft 35. The second bevel gear 7 is rotatably mounted in the middle of the support plate 11 through a second deep groove ball bearing 8. The position of the second deep groove ball bearing 8 is limited by a second hole elastic retaining ring 10. The position of the second bevel gear 7 is limited by a second shaft elastic retaining ring 9. The rotation center axis of the first bevel gear 12 is in a vertical state, and the rotation center axis of the second bevel gear 7 is in a horizontal state. The first bevel gear 12 is meshed with the second bevel gear 7.

[0037] The rotating output shaft 35 is connected to the convex column at the symmetric center of the back of the product hanging plate 4 through the universal joint 6, so that the rotating output shaft 35 can drive the product hanging plate 4 to rotate, and the product hanging plate 4 can also swing freely during the rotation process. The universal joint 6 of this embodiment is a single fixed pin universal joint.

[0038] The hanging rod 17 passes through the first bevel gear 12 and is fixedly connected to the first bevel gear 12. The upper end of the hanging rod 17 passes through the sliding hole on the upper turntable 32. The rotating drive component is installed on the public turntable 30, and the lower end of the hanging rod 17 is connected to the rotating drive component.

[0039] The rotary drive component of this embodiment includes a bearing seat 22, a rotating shaft 25 and a self-rotating gear 26. The bearing seat 22 is fixedly mounted on the male rotating disk 30 by a hexagonal bolt 20. The bearing seat 22 is provided with an inner cavity, in which two third deep groove ball bearings 23 are installed. The two third deep groove ball bearings 23 are separated by a sleeve 21. The third deep groove ball bearing 23 at the upper end passes through a fourth hole elastic circlip 19, and a dust cover 18 is covered on the inner cavity. The rotating shaft 25 passes through the two third deep groove ball bearings 23, and the boss at the upper end of the rotating shaft 25 abuts against the upper third deep groove ball bearing 23 on the upper side. A third hole elastic circlip 24 is also installed on the rotating shaft 25, and the third hole elastic circlip 24 is located below the third deep groove ball bearing 23 on the lower side. The lower end of the hanging rod 17 is inserted into the stepped hole of the rotating shaft 25 for fixed connection. The self-rotating gear 26 is arranged at the lower end of the rotating shaft 25. The boss at the lower end of the rotating shaft 25 abuts against the self-rotating gear 26. The self-rotating gear 26 is locked with the rotating shaft 25 through a flat key 27. The lower end of the rotating shaft 25 is also connected with a washer 28 and a hexagonal nut 29, and the self-rotating gear 26 is fixed by the washer 28 and the hexagonal nut 29. A fixed gear coaxial with the revolving disk 30 is provided in the coating chamber (the fixed gear is not shown in the figure). The fixed gear does not rotate with the revolving disk 30, and the self-rotating gear 26 will mesh with the fixed gear. When the rotating frame drives the coating fixture to revolve as a whole, the self-rotating gear 26 will rotate under the action of the fixed gear, thereby driving the hanging rod 17 to rotate, and then driving the product hanging plate 4 to rotate.

[0040] The angle adjustment mechanism of this embodiment includes four telescopic components, which are respectively mounted on the support plate 11 and can perform telescopic motion independently. The four telescopic components are respectively arranged on the upper, lower, left and right sides of the rotating output shaft 35.

[0041] The telescopic assembly includes a telescopic motor 3, a telescopic rod 5, a screw 1 and a slider 2. An opening is provided on the support plate 11 corresponding to each telescopic assembly. An oil-free bushing 33 is embedded in the opening. The telescopic rod 5 passes through the oil-free bushing 33. The telescopic rod 5 can slide back and forth in the oil-free bushing 33. A round head 34 is provided at the front end of the telescopic rod 5, and the round head 34 is pressed against the back of the product hanging plate 4. When in use, the product hanging plate 4 can be pushed by the telescopic rod 5 to make the product hanging plate 4 swing. When the product hanging plate 4 rotates, the round head 34 will slide relative to the back of the product hanging plate 4. The slider 2 is vertically fixed at the rear end of the telescopic rod 5. The slider 2 extends outward, and an internal threaded hole is provided on the extended part of the slider 2. The telescopic motor 3 is fixedly installed on the side of the support plate 11, next to the telescopic rod 5. The screw 1 is provided at the output end of the telescopic motor 3. The screw 1 is parallel to the telescopic rod 5. The screw 1 is inserted into the internal threaded hole on the slider 2 for threaded connection. During operation, the lead screw 1 can be driven to rotate by the telescopic motor 3, thereby driving the slider 2 and the telescopic rod 5 to move forward and backward. The product hanging plate 4 can be swung by the telescopic cooperation of the four side telescopic rods 5. For example, the upper telescopic rod 5 extends forward, the telescopic rods 5 on the left and right sides of the middle do not move, and the lower telescopic rod 5 retracts backward, so that the upper part of the product hanging plate 4 can be tilted forward and swung, and the lower part can be tilted backward.

[0042] Embodiment 2:

[0043] The coating fixture of the second embodiment differs from that of the first embodiment in the revolving workpiece frame and the rotating driving component.

[0044] like Figure 5 As shown, the revolution workpiece rack of the second embodiment includes a translation bracket, and a translation bracket is respectively provided for each fixture bracket, that is, the translation bracket drives the fixture bracket and its upper components to translate back and forth toward the target surface, and the forward and backward translation of each fixture bracket can be performed independently. The revolution disk 30 in the coating chamber is still retained, and the translation bracket is installed on the revolution disk 30, and is driven by the revolution disk 30 to revolve together. (The revolution disk 30, the self-rotation servo motor and the sliding mechanism are not shown in the figure of the second embodiment)

[0045] The upper, middle and lower positions of the translation bracket of this embodiment are respectively provided with an upper translation plate 37, a middle translation plate 38 and a lower translation plate 39, which are connected together by separate columns and integrally mounted on the public turntable 30 through a sliding mechanism, and the translation bracket is driven to translate forward and backward by the sliding mechanism. The sliding mechanism adopts a conventional slide rail mechanism, and the translation movement is driven by respective servo motors.

[0046] The rotating mechanism of this embodiment includes a first bevel gear 12, a hanging rod 17, a second bevel gear 7 and a rotating drive component, wherein the rotating drive component includes a bearing seat 22, a rotating shaft 25 and a self-rotating servo motor, and the self-rotating gear 26 of the first embodiment is replaced by a self-rotating servo motor. The self-rotating servo motor allows the self-rotating speed of the mobile phone back plate 36 on the product hanging plate 4 to be independently controlled, and is no longer controlled by the revolution speed as in the first embodiment. The solution of replacing the self-rotating gear 26 with a self-rotating servo motor can save the cost of fixing the large gear.

[0047] The gear bracket 15 is fixed on the middle translation plate 38, and the installation of the first bevel gear 12 and the second bevel gear 7 is the same as that of the first embodiment, the first bevel gear 12 is rotatably mounted on the gear bracket 15, the second bevel gear 7 is arranged on the rotation output shaft 35, and the first bevel gear 12 is meshed with the second bevel gear 7. The hanging rod 17 passes through the first bevel gear 12 and is fixedly connected to the first bevel gear 12, and the upper end of the hanging rod 17 passes through the sliding hole on the upper translation plate 37.

[0048] The rotating shaft 25 of the rotating driving component is installed on the lower translation plate 39 through the bearing seat 22. The upper end of the rotating shaft 25 is connected to the hanging rod 17. The self-rotating servo motor is located below the lower translation plate 39 and is connected to the lower end of the rotating shaft 25. The rotating shaft 25 and the hanging rod 17 are driven to rotate by the self-rotating servo motor.

[0049] In order to better understand the coating fixture of the utility model applicable to the back plate of the mobile phone with five coating surfaces, the coating method applicable to the coating fixture of the utility model will be introduced as follows:

[0050] The back plate 36 of the mobile phone to be coated is rectangular, with four sides, namely two long sides and two short sides, and four corners with arc transition. Therefore, the back plate of the mobile phone has five coating surfaces that need to be coated, namely four sides and one back. During the coating process, the back plate 36 of the mobile phone is mounted on the product hanging plate 4, and the revolution disk 30 in the coating room will drive the multiple coating fixtures and the back plate 36 of the mobile phone around it to revolve at the same time. During the revolution, the back plate 36 of the mobile phone is driven to rotate by the rotating mechanism, and the product hanging plate 4 is driven by the angle adjustment mechanism to swing so that the sides of the back plate 36 of the mobile phone are tilted toward the target surface in turn, so as to better coat the back plate 36 of the mobile phone with five coating surfaces evenly.

[0051] During the coating process, when the short side of the mobile phone back plate 36 rotates upward, the angle adjustment mechanism drives the product hanging plate 4 to swing so that the upper part of the mobile phone back plate 36 tilts forward and the lower part tilts backward. At this time, the mobile phone back plate 36 tilts at a first angle; when the long side of the mobile phone back plate 36 rotates upward, the angle adjustment mechanism drives the product hanging plate 4 to swing so that the upper part of the cover plate tilts forward and the lower part tilts backward. At this time, the mobile phone back plate tilts at a second angle. In this coating method, the first angle and the second angle are both 45°, that is, the side of the mobile phone back plate is tilted at an angle of 45° to the target surface for deposition in turn. The specific operation process can be as follows:

[0052] The telescopic motor 3 on the upper side rotates forward, pushing the telescopic rod 5 on the upper side forward, causing the upper part of the product hanging board 4 to tilt forward; at the same time, the telescopic motor 3 on the lower side rotates in the opposite direction, causing the telescopic rod 5 on the lower side to retreat, causing the lower part of the product hanging board 4 to tilt backward. The telescopic rods 5 on the left and right sides do not move, and are pressed against the horizontal center axis of the product hanging board 4. Finally, the product hanging board 4 is adjusted to have the upper half along the horizontal center axis tilted forward and the lower half tilted backward, tilted 45° toward the target surface. The back panel 36 of the mobile phone that needs to be coated is mounted on the product hanging board 4, and the center points of the two coincide with each other. During coating, the back panel 36 of the mobile phone first rotates counterclockwise along with the product hanging board 4 tilted at a 45° angle. When the back plate 36 of the mobile phone is rotated to the horizontal position of its long central axis, a long side surface is directly above, and the long side surface and the adjacent part are inclined at a 45° angle to the target surface. The two have similar deposition amounts, but the part near the horizontal central axis is far away from the target surface, and the deposition amount is reduced; and there are two short side surfaces on the left and right sides, both of which are in a vertical target surface state, and can only accept oblique incidence and diffraction deposition of particles emitted by the target surface, and the deposition amount is small; the lower part of the back plate 36 of the mobile phone is far away from the target, and the deposition amount is very small; the lower long side surface is facing away from the target, and the deposition amount is even smaller. In the following, as the product hanging plate 4 rotates, the side surfaces on the back plate 36 of the mobile phone will continuously change positions, and each lateral area on each side surface will sequentially pass through the corresponding position, so the deposition amount obtained in the end will be roughly the same and tend to be uniform; and the back of the back plate 36 of the mobile phone is also roughly uniform through rotation scanning deposition.

[0053] In addition, there are more coating methods. For example, when coating, the second angle is made greater than the first angle, that is, when the short side of the back panel of the mobile phone is in the up and down direction, it is coated at an angle of 45 degrees, and when the long side is rotated to the up and down direction, it is coated at an angle greater than 45 degrees, so that the long side faces the target surface at a larger angle to obtain more deposition to compensate for the deposition loss due to the distance from the target surface. In addition, when coating, the sides in the up and down position and the left and right position can be tilted at the same time, which is beneficial to improve the coating efficiency. When coating, the inclination angles of both can be 45 degrees, or the inclination angle can be kept at 45 degrees when the short side faces the target surface, and the inclination angle can be kept greater than 45 degrees when the long side faces the target surface.

[0054] The above-mentioned embodiments of the utility model are not intended to limit the protection scope of the utility model, and the implementation methods of the utility model are not limited to these. All other various forms of modifications, replacements or changes made to the above-mentioned structure of the utility model based on the above-mentioned contents of the utility model, in accordance with the common technical knowledge and customary means in the field, without departing from the above-mentioned basic technical ideas of the utility model, should fall within the protection scope of the utility model.

Claims

1. A coating fixture for a mobile phone back panel with five coating surfaces, characterized in that: It includes a revolving workpiece frame, a fixture bracket, a rotating mechanism, an angle adjustment mechanism, a universal joint and a product hanging plate, the fixture bracket is supported by the revolving workpiece frame, the rotating mechanism is arranged on the fixture bracket, the rotating output shaft of the rotating mechanism is connected to the symmetry center of the back side of the product hanging plate through the universal joint, and the rotating mechanism can drive the product hanging plate to rotate; the angle adjustment mechanism includes a telescopic component, and the telescopic components are respectively arranged on four sides of the rotating output shaft, the telescopic component includes a telescopic motor and a telescopic rod, the telescopic rod is slidably arranged on the fixture bracket, the telescopic motor drives the telescopic rod to perform telescopic movement, the end of the telescopic rod abuts against the back side of the product hanging plate, and the telescopic cooperation of the telescopic rod can make the product hanging plate swing in different directions and angles.

2. The coating fixture for a mobile phone back panel with five coating surfaces according to claim 1, characterized in that: A revolving disk is provided in a coating chamber for coating the back plate of a mobile phone, and a plurality of coating fixtures are mounted on the revolving disk through the revolving workpiece frame and revolve together with the revolving disk.

3. The coating fixture for a mobile phone back panel with five coating surfaces according to claim 2, characterized in that: The revolving workpiece frame includes an upper turntable and a middle support plate, the middle support plate is located between the upper turntable and the revolving turntable, and the upper turntable and the middle support plate are fixedly connected to the revolving turntable; the rotating mechanism includes a first bevel gear, a hanging rod, a second bevel gear and a rotating drive component, the clamp bracket is fixed on the middle support plate, the first bevel gear is rotatably mounted on the clamp bracket, the second bevel gear is arranged on the rotating output shaft, the first bevel gear is meshed with the second bevel gear, the hanging rod passes through the first bevel gear and is fixedly connected to the first bevel gear, the upper end of the hanging rod passes through the sliding hole on the upper turntable, the rotating drive component is installed on the revolving turntable, and the lower end of the hanging rod is connected to the rotating drive component.

4. The coating fixture for a mobile phone back panel with five coating surfaces according to claim 3, characterized in that: The rotating driving component includes a bearing seat, a rotating shaft and a self-rotating gear. The rotating shaft is installed on the revolving disk through the bearing seat. The upper end of the rotating shaft is connected to the hanging rod. The self-rotating gear is arranged at the lower end of the rotating shaft. A fixed gear coaxial with the revolving disk is provided in the coating chamber, and the self-rotating gear is meshed with the fixed gear.

5. The coating fixture for a mobile phone back panel with five coating surfaces according to claim 2, characterized in that: The revolving workpiece rack includes a translation bracket, which is respectively arranged corresponding to each of the clamp brackets. The translation bracket is slidably installed on the revolving disk, and the clamp bracket and its upper components are driven by the translation bracket to translate back and forth toward the target surface.

6. The coating fixture for a mobile phone back panel with five coating surfaces according to claim 5, characterized in that: The upper, middle and lower positions of the translation bracket are respectively provided with an upper translation plate, a middle translation plate and a lower translation plate, and the upper translation plate, the middle translation plate and the lower translation plate are connected together and installed on the revolving disk through a sliding mechanism, and are driven by the sliding mechanism to translate back and forth; the rotating mechanism includes a first bevel gear, a hanging rod, a second bevel gear and a rotating drive component, the clamp bracket is fixed on the middle translation plate, the first bevel gear is rotatably installed on the clamp bracket, the second bevel gear is arranged on the rotating output shaft, the first bevel gear is meshed with the second bevel gear, the hanging rod passes through the first bevel gear and is fixedly connected to the first bevel gear, the upper end of the hanging rod passes through the sliding hole on the upper translation plate, the rotating drive component is installed on the lower translation plate, and the lower end of the hanging rod is connected to the rotating drive component.

7. The coating fixture for a mobile phone back panel with five coating surfaces according to claim 6, characterized in that: The rotating drive component includes a bearing seat, a rotating shaft and a self-rotating servo motor. The rotating shaft is installed on the lower translation plate through the bearing seat. The upper end of the rotating shaft is connected to the hanging rod, and the self-rotating servo motor is connected to the lower end of the rotating shaft. The rotating shaft and the hanging rod are driven to rotate by the self-rotating servo motor.

8. The coating fixture for a mobile phone back panel with five coating surfaces according to claim 3 or 6, characterized in that: The fixture bracket is provided with a gear bracket, and the first bevel gear is rotatably mounted on the gear bracket.

9. The coating fixture for a mobile phone back panel with five coating surfaces according to claim 1, characterized in that: A round head is provided at the front end of the telescopic rod, and the round head is pressed against the back side of the product hanging plate.

10. The coating fixture for a mobile phone back panel with five coating surfaces according to claim 1, characterized in that: The clamp bracket is provided with an upright support plate, the telescopic component is placed on the support plate, the telescopic component also includes a screw rod and a slider, an oil-free bushing is respectively provided on the support plate corresponding to each of the telescopic components, the telescopic rod slides through the oil-free bushing, the slider is vertically fixed at the rear end of the telescopic rod, the telescopic motor is fixedly installed on the side of the support plate, the screw rod is provided at the output end of the telescopic motor, the screw rod is parallel to the telescopic rod, and the screw rod cooperates and passes through the internal threaded hole on the slider.

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