Double-sided coating equipment and coating method

Abstract

The invention relates to the technical field of vacuum coating, and discloses double-sided coating equipment and a coating method. Wherein the shell of the double-sided coating equipment is provided with a coating cavity; the rotating stand is rotationally arranged in the film coating cavity, and at least one overturning position is arranged in the circumferential direction of the rotating stand; the multiple mounting frames are mounted on the rotating frame at intervals in the circumferential direction, the mounting frames are rotatably mounted on the rotating frame, and the mounting frames are used for mounting to-be-coated products; the overturning assembly is located at the overturning position and installed on the cavity wall of the film coating cavity, the output end of the overturning assembly is selectively connected to the installation frame, and when the output end of the overturning assembly is connected to the installation frame, the overturning assembly can drive the installation frame to rotate; the telescopic driving assembly is mounted in the rotating frame; and the multiple protection covers correspond to the multiple mounting frames one to one, the telescopic driving assembly is in driving connection with the protection covers, and the telescopic driving assembly is used for driving the protection covers to move in the radial direction of the rotating frame so that the protection covers can cover the sides, close to the axis of the rotating frame, of the to-be-coated products.

Description

Technical Field

[0001] The present invention relates to the field of vacuum coating technology, and in particular to a double-sided coating device and a coating method. Background Art

[0002] In recent years, the market for electronic products such as smartphones, tablets, and AR / VR glasses has put forward higher requirements on the production capacity and yield of related coating equipment. At present, in order to achieve specific thin film functions, it is often necessary to vacuum coat both the front and back sides of the product to be coated; and the film layers coated on the front and back sides of the product to be coated may have different material compositions and coating processes.

[0003] In the prior art, after coating the front side of the product, the equipment needs to be broken, and then the product is turned over to continue coating the back side of the product. This processing method greatly reduces the production efficiency of the product and increases labor costs. Furthermore, whether it is double-sided coating at the same time or double-sided coating in sequence, when vacuum coating is performed on one side of the product to be coated, the film material is more likely to diffract to the other side of the product to be coated, resulting in deterioration of the film quality.

[0004] Based on this, there is an urgent need for a double-sided coating device and a coating method to solve the above-mentioned problems. Summary of the invention

[0005] Based on the above, the purpose of the present invention is to provide a double-sided coating device and a coating method, which can achieve the coating of different types of film materials on the front and back of the product without exchanging the coating chamber, thereby reducing unnecessary breaking and flipping time and improving processing efficiency.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] On the one hand, a double-sided coating device is provided, characterized in that it includes:

[0008] A shell body, wherein the shell body is provided with a coating cavity;

[0009] A rotating rack, which is rotatably disposed in the coating chamber, and the rotating rack is provided with at least one flipping position in the circumference thereof;

[0010] A plurality of mounting frames, wherein the plurality of mounting frames are installed on the rotating frame at intervals along the circumferential direction, the mounting frames can be rotatably installed on the rotating frame, and the mounting frames are used to install the products to be coated;

[0011] A flip assembly, which is located at the flip position, and is mounted on the cavity wall of the coating cavity. The output end of the flip assembly can be selectively connected to the mounting frame, and when the output end of the flip assembly is connected to the mounting frame, the flip assembly can drive the mounting frame to rotate;

[0012] A telescopic drive assembly installed in the rotating frame;

[0013] A plurality of protective covers, each of the plurality of protective covers corresponds to a plurality of mounting frames one by one, the telescopic driving assembly is drivingly connected to the protective covers, and the telescopic driving assembly is used to drive the protective covers to move radially along the rotating frame so that the protective covers can be covered on the side of the axis of the product to be coated close to the rotating frame.

[0014] As a preferred technical solution of a double-sided coating device, connecting shafts are provided at both ends of the mounting frame, and the connecting shafts at both ends of the mounting frame are rotatably connected to the rotating frame;

[0015] The flipping assembly includes a lifting drive component and a rotating drive component. The lifting drive component is installed on the cavity wall of the coating cavity and is drivingly connected to the rotating drive component. The lifting drive component is used to drive the rotating drive component to approach or move away from the mounting frame so that the output end of the rotating drive component is connected to or disconnected from the connecting shaft of the mounting frame close to one end of the flipping assembly.

[0016] As a preferred technical solution for a double-sided coating device, the lifting and driving component includes:

[0017] A second bracket, comprising a sixth connecting plate, a second guide rod and a seventh connecting plate connected in sequence, wherein the second guide rod is slidably connected to the cavity wall of the shell, the sixth connecting plate is located outside the coating cavity; the seventh connecting plate is located inside the coating cavity; the rotary drive component is mounted on the second bracket;

[0018] The third driving member is installed on the cavity wall of the shell, and the output end of the third driving member is drivingly connected to the sixth connecting plate or the seventh connecting plate.

[0019] As a preferred technical solution of a double-sided coating device, the rotating drive component includes:

[0020] A drive motor is mounted on the sixth connecting plate, and a drive shaft of the drive motor passes through the sixth connecting plate, the cavity wall of the housing, and the seventh connecting plate;

[0021] A turner, which is installed at the end of the driving shaft of the driving motor, and the turner is provided with a turn slot, when the third driving member drives the second bracket and the driving motor to approach the mounting frame, the connecting shaft at one end of the mounting frame close to the flip assembly is inserted into the turn slot;

[0022] When the third driving member drives the second bracket and the driving motor to move away from the mounting bracket, the connecting shaft at one end of the mounting bracket close to the flip assembly is disengaged from the turning groove.

[0023] As a preferred technical solution for a double-sided coating device, the telescopic drive assembly includes:

[0024] A plurality of connecting rods, the plurality of connecting rods correspond to the plurality of protective covers one by one, the rotating frame ring is provided with a plurality of radially extending slide grooves, the first end of the connecting rod is slidably connected to the slide groove, and the first end of the connecting rod is connected to the protective cover;

[0025] The first driving component, the second end of the connecting rod is hinged to the output end of the first driving component, and the first driving component can drive the second end of the connecting rod to move along the axial direction of the rotating frame.

[0026] As a preferred technical solution for a double-sided coating device, the telescopic drive assembly includes a second drive component, a turntable and a plurality of connecting blocks. The second drive component is arranged on the turntable, and the second drive component is drivingly connected to the turntable. The second drive component is used to drive the turntable to rotate. A plurality of arc grooves are arranged on the turntable. The plurality of arc grooves, the plurality of connecting blocks and the plurality of protective covers correspond one to one. The arc grooves extend from the inside to the outside. A convex key is arranged at the bottom of the first end of the connecting block. The convex key is slidably connected to the arc groove, and the second end of the connecting block is connected to the protective cover.

[0027] As a preferred technical solution of the double-sided coating device, it also includes a connecting assembly, which includes a third connecting plate, a connecting rod and a fourth connecting plate connected in sequence, the third connecting plate is connected to the output end of the telescopic driving assembly, and the fourth connecting plate is connected to the protective cover;

[0028] The rotating frame is provided with a guide hole extending in a radial direction, and the connecting rod is slidably connected to the guide hole.

[0029] As a preferred technical solution of a double-sided coating device, the connection assembly further includes a dislocation component, the dislocation component is located between the fourth connecting plate and the connecting rod, and the dislocation component includes:

[0030] a fifth connecting plate, one side of which is connected to the connecting rod;

[0031] A buffer shaft, wherein the fifth connecting plate is provided with a second bearing seat, one end of the buffer shaft is connected to the fourth connecting plate, and the other end is slidably connected to the second bearing seat;

[0032] An elastic member is arranged between the fifth connecting plate and the fourth connecting plate.

[0033] As a preferred technical solution for a double-sided coating device, the elastic member is a spring, the spring is sleeved on the buffer shaft, and the two ends of the spring are respectively connected to the fifth connecting plate and the fourth connecting plate; the original lengths of the springs of the adjacent offset components along the circumference of the rotating frame are different.

[0034] On the other hand, a coating method is provided, characterized in that the double-sided coating device described in any one of the above is used, and the coating method comprises the following steps:

[0035] Install the product to be coated on the mounting frame;

[0036] The telescopic driving assembly drives the protective cover to move outward along the radial direction of the rotating frame, so that the protective cover is arranged on the side of the product to be coated close to the axis of the rotating frame;

[0037] Coating the side of the product to be coated which is away from the axis of the rotating frame;

[0038] The telescopic driving assembly drives the protective cover to move radially inwardly along the rotating frame so that the protective cover is separated from the product to be coated;

[0039] The rotating frame rotates the mounting frames to be flipped to the flipping positions in sequence, and all the mounting frames are flipped 180° by the flipping assembly;

[0040] The telescopic driving assembly drives the protective cover to move outward in the radial direction of the rotating frame again, so that the protective cover is arranged on the side of the product to be coated close to the axis of the rotating frame;

[0041] Coating the product to be coated again on the side of the product to be coated that is away from the axis of the rotating frame;

[0042] The telescopic driving assembly drives the protective cover to reset.

[0043] The beneficial effects of the present invention are:

[0044] The present invention provides a double-sided coating device and a coating method. During processing, the product to be coated is mounted on a mounting frame; a telescopic driving component drives the protective cover to move outward along the radial direction of the rotating frame, so that the protective cover is arranged on the side of the product to be coated close to the axis of the rotating frame; the side of the product to be coated away from the axis of the rotating frame is coated, and during the coating process, the protective cover can protect the inner side of the product to be coated to prevent the inner side of the product to be coated from being affected by the coating process, thereby improving the product yield; then, the telescopic driving component drives the protective cover to move inward along the radial direction of the rotating frame, so that the protective cover can protect the inner side of the product to be coated. The cover is separated from the product to be coated. At this time, the protective cover does not interfere with the movement of the product to be coated, and the product to be coated can be flipped; the rotating frame rotates the mounting frame to be flipped to the flipping position in turn, and all the mounting frames are flipped 180° by the flipping assembly; the telescopic drive assembly drives the protective cover to move radially outward along the rotating frame again, so that the protective cover is arranged on the side of the axis of the product to be coated close to the rotating frame; the product to be coated is coated on the side of the axis away from the rotating frame again, so that the product to be coated is double-sidedly coated; the telescopic drive assembly drives the protective cover to reset to complete the overall coating process. After the single-sided coating is completed, the coating on the other side is directly flipped without opening a cavity, so that different types of film materials can be coated on the front and back of the product without exchanging the coating chamber, thereby reducing unnecessary breaking and flipping time and improving processing efficiency. Furthermore, by setting a protective cover that can move in the radial direction, it is achieved that the inner side of the product to be coated is completely covered during coating, which greatly improves the coating yield and quality of the product, and at the same time, it can avoid the flipping of the product to be coated without affecting its flipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0046] Figure 1 is a schematic structural diagram of a coating device provided in Embodiment 1 of the present invention;

[0047] Figure 2 yes Figure 1 A magnified view at point A;

[0048] Figure 3 is a schematic diagram of the structure of a flip assembly provided in Embodiment 1 of the present invention;

[0049] Figure 4 is a schematic diagram of the protective cover provided by the first embodiment of the present invention moving outward along the radial direction of the rotating frame;

[0050] Figure 5It is a schematic diagram of the protective cover provided by the first embodiment of the present invention moving inwardly along the radial direction of the rotating frame.

[0051] Figure 6 is a schematic structural diagram of a coating device provided in Embodiment 2 of the present invention;

[0052] Figure 7 yes Figure 6 Enlarged view at B;

[0053] Figure 8 It is a partial structural schematic diagram of a coating device provided in Embodiment 2 of the present invention;

[0054] Fig. 9 It is a flow chart of the coating method provided in the third embodiment of the present invention.

[0055] The following are marked in the figure:

[0056] 10. Shell;

[0057] 1. rotating frame; 11. rotating shaft; 12. layer plate; 13. slideway; 2. telescopic driving assembly; 21. connecting rod; 22. first driving component; 221. first driving member; 222. first bracket; 2221. first connecting plate; 2222. first guide rod; 2223. second connecting plate; 223. guide rod seat; 224. first bearing seat; 23. second driving component; 231. servo motor; 232. gear; 233. gear ring; 24. rotating disk; 241. arc groove; 25. connecting block; 251. convex key; 26. fixed disk; 27. slider; 28. slide rail;

[0058] 3. Protective cover; 4. Connecting assembly; 41. Third connecting plate; 42. Connecting rod; 43. Fourth connecting plate; 44. Dislocation component; 441. Fifth connecting plate; 442. Buffer shaft; 443. Elastic member;

[0059] 5. Flip assembly; 51. Lifting drive component; 511. Second bracket; 5111. Sixth connecting plate; 5112. Second guide rod; 5113. Seventh connecting plate; 512. Third driving member; 52. Rotation driving component; 521. Driving motor; 5211. Driving shaft; 522. Turner; 5221. Turning slot;

[0060] 6. Mounting frame; 61. Connecting shaft. DETAILED DESCRIPTION

[0061] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0062] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0064] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0065] like Figure 1-Figure 3 As shown, this embodiment provides a double-sided coating device, which includes a shell 10, a rotating frame 1, a flip assembly 5, a telescopic driving assembly 2, a plurality of mounting frames 6 and a plurality of protective covers 3.

[0066] Specifically, the shell 10 is provided with a coating cavity; the turntable 1 is rotatably arranged in the coating cavity, and at least one flipping position is arranged circumferentially of the turntable 1; a plurality of mounting frames 6 are installed on the turntable 1 at intervals along the circumference, and the mounting frames 6 can be rotatably installed on the turntable 1, and the mounting frames 6 are used to install the products to be coated; the flipping assembly 5 is located at the flipping position, and the flipping assembly 5 is installed on the cavity wall of the coating cavity, and the output end of the flipping assembly 5 can be selectively connected to the mounting frame 6, and when the output end of the flipping assembly 5 is connected to the mounting frame 6, the flipping assembly 5 can drive the mounting frame 6 to rotate; the telescopic driving assembly 2 is installed in the turntable 1; a plurality of protective covers 3 correspond one by one to a plurality of mounting frames 6, and the telescopic driving assembly 2 is drivingly connected to the protective covers 3, and the telescopic driving assembly 2 is used to drive the protective covers 3 to move radially along the turntable 1, so that the protective covers 3 can be covered on the side of the axis of the product to be coated close to the turntable 1.

[0067] During processing, the product to be coated is mounted on the mounting frame 6; the telescopic driving assembly 2 drives the protective cover 3 to move radially outward along the rotating frame 1, so that the protective cover 3 is arranged on the side of the product to be coated close to the axis of the rotating frame 1; the product to be coated is coated on the side of the axis away from the rotating frame 1. During the coating process, the protective cover 3 can protect the inner side of the product to be coated to prevent the inner side of the product to be coated from being affected by the coating process, thereby improving the product yield; then, the telescopic driving assembly 2 drives the protective cover 3 to move radially inward along the rotating frame 1, so that the protective cover 3 is separated from the product to be coated. When the protective cover 3 does not interfere with the movement of the product to be coated, the product to be coated can be turned over; the rotating frame 1 rotates the mounting frame 6 to be turned over to the turning position in sequence, and all the mounting frames 6 are turned over 180° by the turning assembly 5; the telescopic driving assembly 2 drives the protective cover 3 to move radially outward along the rotating frame 1 again, so that the protective cover 3 is set on the side of the axis of the product to be coated close to the rotating frame 1; the product to be coated is coated on the side of the axis away from the rotating frame 1 again, so that the product to be coated is double-sided coated; the telescopic driving assembly 2 drives the protective cover 3 to reset and complete the overall coating process. After the single-sided coating is completed, the coating on the other side is directly turned over without opening a cavity, so that different types of film materials can be coated on the front and back of the product without exchanging the coating chamber, thereby reducing unnecessary breaking and turning time and improving processing efficiency. Furthermore, by setting a protective cover 3 that can move in the radial direction, it is achieved that the inner side of the product to be coated is completely covered during coating, which greatly improves the coating yield and quality of the product, and at the same time, it can avoid the product to be coated when it is turned over without affecting its turning. In this embodiment, there is only one flip assembly 5, and flipping of all mounting frames 6 is achieved through one flip assembly 5, which reduces equipment cost and equipment size.

[0068] Furthermore, if Figure 1 and Figure 3As shown, the rotating frame 1 can be driven to rotate by a motor. The rotating frame 1 includes two spaced apart layer plates 12, the mounting frame 6 is located between the two layer plates 12, and connecting shafts 61 are provided at both ends of the mounting frame 6. The connecting shafts 61 at both ends of the mounting frame 6 are rotatably connected to the rotating frame 1, that is, the connecting shafts 61 at both ends of the mounting frame 6 are rotatably connected to the two layer plates 12.

[0069] The flip assembly 5 includes a lifting drive component 51 and a rotating drive component 52. The lifting drive component 51 is installed on the cavity wall of the coating cavity, and the lifting drive component 51 is drivingly connected to the rotating drive component 52. The lifting drive component 51 is used to drive the rotating drive component 52 to approach or move away from the mounting frame 6, so that the output end of the rotating drive component 52 is connected to or disconnected from the connecting shaft 61 of the mounting frame 6 close to one end of the flip assembly 5. The flip assembly 5 is located below the rotating frame 1, and the connecting shaft 61 of the mounting frame 6 close to one end of the flip assembly 5 is penetrated through the layer plate 12 so as to be connected to the output end of the rotating drive component 52.

[0070] Preferably, the lifting drive component 51 includes a second bracket 511 and a third drive member 512, the second bracket 511 includes a sixth connecting plate 5111, a second guide rod 5112 and a seventh connecting plate 5113 connected in sequence, the second guide rod 5112 is slidably connected to the cavity wall of the shell 10, the sixth connecting plate 5111 is located outside the coating cavity; the seventh connecting plate 5113 is located inside the coating cavity; the rotating drive component 52 is installed on the second bracket 511; the third drive member 512 is installed on the cavity wall of the shell 10, and the output end of the third drive member 512 is drivingly connected to the sixth connecting plate 5111 or the seventh connecting plate 5113. In this embodiment, the third driving member 512 is a cylinder, which is installed on the outer wall of the shell 10 and does not occupy the space inside the coating chamber. The telescopic rod of the cylinder is connected to the sixth connecting plate 5111. The cylinder can drive the second bracket 511 and the rotating driving component 52 to move. The cavity wall of the shell 10 is provided with a second guide hole, and the second guide rod 5112 is slidably connected to the second guide hole. The second guide hole can improve the movement accuracy of the second bracket 511 and the rotating driving component 52, and improve the stability of the connection between the second bracket 511 and the shell 10.

[0071] Further preferably, the rotation driving component 52 includes a driving motor 521 and a dial 522, the driving motor 521 is mounted on the sixth connecting plate 5111, and the driving shaft 5211 of the driving motor 521 is penetrated by the sixth connecting plate 5111, the cavity wall of the shell 10 and the seventh connecting plate 5113, the sixth connecting plate 5111, the cavity wall of the shell 10 and the seventh connecting plate 5113 improve the stability of the driving shaft 5211 of the driving motor 521; the dial 522 is mounted on the driving At the end of the driving shaft 5211 of the driving motor 521, the dial 522 is provided with a dial groove 5221. When the third driving member 512 drives the second bracket 511 and the driving motor 521 to approach the mounting frame 6, the connecting shaft 61 at one end of the mounting frame 6 close to the flip component 5 is inserted into the dial groove 5221; when the third driving member 512 drives the second bracket 511 and the driving motor 521 to move away from the mounting frame 6, the connecting shaft 61 at one end of the mounting frame 6 close to the flip component 5 is disengaged from the dial groove 5221.

[0072] Further, the telescopic drive assembly 2 includes a first drive component 22 and a plurality of connecting rods 21, the plurality of connecting rods 21 correspond to the plurality of protective covers 3 one by one, the rotating frame 1 is provided with a plurality of radially extending slide grooves 13, the first end of the connecting rod 21 is slidably connected to the slide groove 13, and the first end of the connecting rod 21 is connected to the protective cover 3; the second end of the connecting rod 21 is hinged to the output end of the first drive component 22, and the first drive component 22 can drive the second end of the connecting rod 21 to move along the axial direction of the rotating frame 1. Among them, the connecting rod 21 converts the vertical power direction of the first driving member 221 into a horizontal direction. When the first driving component 22 drives the second end of the connecting rod 21 to move upward, the first end of the connecting rod 21 moves along the slide groove 13 in the axial direction away from the rotating frame 1, so as to realize driving the protective cover 3 to move radially outward along the rotating frame 1. On the contrary, when the first driving component 22 drives the second end of the connecting rod 21 to move downward, the first end of the connecting rod 21 moves along the slide slot 13 toward the axial direction of the rotating frame 1, so as to drive the protective cover 3 to move radially inwardly along the rotating frame 1. Furthermore, the first driving component 22 can drive multiple connecting rods 21 to move simultaneously, so as to achieve the simultaneous radial movement of multiple protective covers 3 along the rotating frame 1, thereby improving the driving efficiency and reducing the cost of the first driving component 22.

[0073] In this embodiment, Figure 1As shown, the first driving component 22 includes a first driving member 221, a first bracket 222 and a guide rod seat 223; the guide rod seat 223 is installed at the bottom of the rotating frame 1, and the first bracket 222 includes a first connecting plate 2221, a first guide rod 2222 and a second connecting plate 2223 connected in sequence, the first connecting plate 2221 is connected to the second end of the connecting rod 21, the first guide rod 2222 extends along the axial direction of the rotating frame 1 and is slidably connected to the guide rod seat 223, and the second connecting plate 2223 is connected to the output end of the first driving member 221. The guide rod seat 223 guides the first guide rod 2222, which can improve the movement accuracy of the first bracket 222, thereby improving the movement accuracy of the connecting rod 21 and the protective cover 3.

[0074] Preferably, the first driving member 221 is a cylinder, an oil cylinder or a telescopic motor. In this embodiment, the first driving member 221 is a cylinder.

[0075] Further preferably, the first driving component 22 further includes a first bearing seat 224, the rotating frame 1 is provided with a rotating shaft 11, the first bearing seat 224 is sleeved and slidably connected to the rotating shaft 11, one end of the first bearing seat 224 is connected to the second connecting plate 2223, and the other end is hinged to the second end of the connecting rod 21. The first bearing seat 224 is slidably connected to the rotating shaft 11, so as to improve the stability of the movement of the second end of the connecting rod 21. In this embodiment, a rolling bearing is provided between the first bearing seat 224 and the rotating shaft 11, which can withstand the radial load applied by the connecting rod 21 and the axial load applied by the first driving component 221 and the connecting rod 21. The first driving component 22 can rotate with the rotating frame 1 and can drive the connecting rod 21 to move. In this embodiment, there are multiple first guide rods 2222 of the rotating frame 1, and the multiple first guide rods 2222 are arranged around the rotating shaft 11.

[0076] Furthermore, the coating device further includes a connection assembly 4, which includes a third connection plate 41, a connection rod 42, and a fourth connection plate 43 connected in sequence, the third connection plate 41 is connected to the output end of the telescopic drive assembly 2, and the fourth connection plate 43 is connected to the protective cover 3. In this embodiment, the third connection plate 41 is connected to the first end of the connecting rod 21, so that the telescopic drive assembly 2 is driven and connected to the protective cover 3.

[0077] Preferably, the rotating frame 1 is provided with a first guide hole extending in the radial direction, and the connecting rod 42 is slidably connected to the first guide hole, and the first guide hole can guide the connecting rod 42, thereby improving the movement accuracy of the protective cover 3. Further preferably, there are multiple connecting rods 42 and first guide holes, thereby further improving the movement accuracy and movement reliability of the protective cover 3.

[0078] Preferably, the connection assembly 4 also includes a dislocation component 44, which is located between the fourth connection plate 43 and the connection rod 42. The dislocation component 44 includes a fifth connection plate 441, a buffer shaft 442 and an elastic member 443. One side of the fifth connection plate 441 is connected to the connection rod 42; a second bearing seat is provided on the fifth connection plate 441, one end of the buffer shaft 442 is connected to the fourth connection plate 43, and the other end is slidably connected to the second bearing seat; the elastic member 443 is provided between the fifth connection plate 441 and the fourth connection plate 43. When the protective cover 3 is fitted to the product to be coated, the elastic member 443 is in a compressed state, and the elastic member 443 applies an elastic force to the protective cover 3, thereby improving the fitting force between the protective cover 3 and the product to be coated and improving the protective effect. Among them, Figure 2 and Figure 4 As shown, when the protective cover 3 is extended to protect the product to be coated, the protective covers 3 are adjacent to each other with a small gap, so that the protective cover 3 can cover and protect all products on the bonding surface, achieving a 360° no-dead-angle effect; however, when adjacent protective covers 3 are retracted, the distance between each other becomes closer and closer, which is easy to cause interference.

[0079] To solve the above problems, Figure 2 and Figure 5 As shown, in this embodiment, the elastic member 443 is a spring, which is sleeved on the buffer shaft 442, and the two ends of the spring are respectively connected to the fifth connecting plate 441 and the fourth connecting plate 43; the original lengths of the springs of the adjacent offset components 44 along the circumference of the rotating frame 1 are different. In the process of the telescopic driving assembly 2 driving the protective cover 3 to retract, the spring first returns to its original length, and the protective cover 3 will move toward the axis of the rotating frame 1. Since the original lengths of the springs of the adjacent offset components 44 along the circumference of the rotating frame 1 are different, the protective covers 3 will not be retracted at the same time, so as to achieve misalignment between adjacent protective covers 3, so that adjacent protective covers 3 will not collide and interfere with each other when they are retracted.

[0080] Embodiment 2

[0081] like Figure 6-Figure 8 As shown, this embodiment provides a coating device. The structure of the coating device provided in this embodiment is basically the same as that of the embodiment 1, and only the structure of the telescopic drive component 2 is different. This embodiment will no longer repeat the structure that is the same as that of the embodiment 1.

[0082] In this embodiment, the telescopic drive assembly 2 includes a second drive component 23, a rotating disk 24 and a plurality of connecting blocks 25. The second drive component 23 is arranged on the rotating frame 1, and the second drive component 23 is drivingly connected to the rotating disk 24. The second drive component 23 is used to drive the rotating disk 24 to rotate. The rotating disk 24 is provided with a plurality of arc grooves 241. The plurality of arc grooves 241, the plurality of connecting blocks 25 and the plurality of protective covers 3 correspond to each other one by one. The arc grooves 241 extend from the inside to the outside. The bottom of the first end of the connecting block 25 is provided with a convex key 251. The convex key 251 is slidably connected to the arc groove 241, and the second end of the connecting block 25 is connected to the protective cover 3. In the process of the second drive component 23 driving the rotating disk 24 to rotate, the convex key 251 slides in the arc groove 241 to realize the radial movement of the driving connecting block 25 along the rotating disk 24, thereby realizing the radial movement of the driving protective cover 3 along the rotating frame 1. Furthermore, the multiple arc-shaped grooves 241 drive the multiple connecting blocks 25 at the same time, so that one turntable 24 drives the multiple protective covers 3 to move along the radial direction of the turntable 1 .

[0083] Preferably, the telescopic drive assembly 2 further comprises a fixed plate 26, a slider 27 and a slide rail 28, the fixed plate 26 is mounted on the rotating frame 1, one of the slider 27 and the slide rail 28 is mounted on the fixed plate 26, and the other is mounted on the connecting block 25, and the slider 27 is slidably connected to the slide rail 28. In this embodiment, the slider 27 is arranged at the bottom of the fixed plate 26, and the slide rail 28 is arranged at the top of the rotating frame 1, so that the movement accuracy of the rotating frame 1 is improved.

[0084] Furthermore, the second driving component 23 includes a servo motor 231, a gear 232 and a gear ring 233, and the gear ring 233 is fixed on the rotating disk 24. The gear 232 is fixed to the output end of the servo motor 231, and the gear 232 and the gear ring 233 are meshed and connected.

[0085] When the servo motor 231 rotates forward to drive the turntable 24 to rotate through the gear 232 and the gear ring 233, the convex key 251 of the connection block 25 moves from inside to outside in the arc groove 241, thereby pushing the protective cover 3 to cover the product to be coated near the axis of the rotating frame 1. When the servo motor 231 rotates reversely to drive the turntable 24 to rotate through the gear 232 and the gear ring 233, the convex key 251 of the connection block 25 moves from outside to inside in the arc groove 241, thereby driving the protective cover 3 to separate from the product to be coated and avoid the flipping range of the product to be coated.

[0086] Embodiment 3

[0087] like Fig. 9 As shown, this embodiment also provides a coating method, using the coating device in embodiment 1 or embodiment 2, the coating method includes the following steps:

[0088] S10, installing the product to be coated on the mounting frame 6;

[0089] S20, the telescopic driving assembly 2 drives the protective cover 3 to move radially outward along the rotating frame 1, so that the protective cover 3 is arranged on the side of the product to be coated close to the axis of the rotating frame 1;

[0090] S30, coating the product to be coated on the side away from the axis of the rotating frame 1; during the coating process, the protective cover 3 can protect the inner side of the product to be coated to prevent the inner side of the product to be coated from being affected by the coating process, thereby improving the product yield;

[0091] S40, the telescopic driving assembly 2 drives the protective cover 3 to move radially inwardly along the rotating frame 1, so that the protective cover 3 is separated from the product to be coated; at this time, the protective cover 3 does not interfere with the movement of the product to be coated, and the product to be coated can be turned over;

[0092] S50, the rotating frame 1 rotates the mounting frames 6 to be flipped to the flipping position in sequence, and all the mounting frames 6 are flipped 180° by the flipping assembly 5;

[0093] S60, the telescopic driving assembly 2 drives the protective cover 3 to move radially outward along the rotating frame 1 again, so that the protective cover 3 is arranged on the side of the product to be coated close to the axis of the rotating frame 1;

[0094] S70, coating the product to be coated again on the side away from the axis of the rotating frame 1, so that the product to be coated is coated on both sides;

[0095] S80, the telescopic driving assembly 2 drives the protective cover 3 to reset, completing the overall coating process.

[0096] This embodiment realizes double-sided coating of the product to be coated, and during coating, the protective cover 3 can cover the side of the product to be coated that does not need coating, thereby improving the product processing quality. When the product to be coated is turned over, the protective cover 3 can avoid it without affecting its turning over.

[0097] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A double-sided coating device, characterized in that: include: A housing (10), wherein the housing (10) is provided with a coating cavity; A rotating rack (1) is rotatably disposed in the coating chamber, and the rotating rack (1) is provided with at least one turning position in a circumferential direction; A plurality of mounting frames (6), wherein the plurality of mounting frames (6) are mounted on the rotating frame (1) at intervals along the circumferential direction, the mounting frames (6) are rotatably mounted on the rotating frame (1), and the mounting frames (6) are used to mount products to be coated; A flip assembly (5), which is located at the flip position, the flip assembly (5) is mounted on the cavity wall of the coating cavity, the output end of the flip assembly (5) can be selectively connected to the mounting frame (6), and when the output end of the flip assembly (5) is connected to the mounting frame (6), the flip assembly (5) can drive the mounting frame (6) to rotate; A telescopic drive assembly (2) installed in the rotating frame (1); A plurality of protective covers (3), wherein the plurality of protective covers (3) correspond one to one with the plurality of mounting frames (6); the telescopic drive assembly (2) is drivably connected to the protective covers (3); the telescopic drive assembly (2) is used to drive the protective covers (3) to move radially along the rotating frame (1), so that the protective covers (3) can be covered on the side of the axis of the product to be coated close to the rotating frame (1).

2. The double-sided coating device according to claim 1, characterized in that: Connecting shafts (61) are provided at both ends of the mounting frame (6), and the connecting shafts (61) at both ends of the mounting frame (6) are rotatably connected to the rotating frame (1); The flip assembly (5) comprises a lifting drive component (51) and a rotating drive component (52), wherein the lifting drive component (51) is mounted on the cavity wall of the coating cavity, and the lifting drive component (51) is drivingly connected to the rotating drive component (52), and the lifting drive component (51) is used to drive the rotating drive component (52) to approach or move away from the mounting frame (6), so that the output end of the rotating drive component (52) is connected to or disconnected from the connecting shaft (61) at one end of the mounting frame (6) close to the flip assembly (5).

3. The double-sided coating device according to claim 2, characterized in that: The lifting drive component (51) comprises: A second bracket (511), comprising a sixth connecting plate (5111), a second guide rod (5112) and a seventh connecting plate (5113) connected in sequence, wherein the second guide rod (5112) is slidably connected to the cavity wall of the shell (10), the sixth connecting plate (5111) is located outside the coating cavity; the seventh connecting plate (5113) is located inside the coating cavity; the rotating driving component (52) is mounted on the second bracket (511); A third driving member (512) is mounted on the cavity wall of the shell (10), and an output end of the third driving member (512) is drivingly connected to the sixth connecting plate (5111) or the seventh connecting plate (5113).

4. The double-sided coating device according to claim 3, characterized in that: The rotary drive component (52) comprises: a drive motor (521), which is mounted on the sixth connecting plate (5111), and a drive shaft (5211) of the drive motor (521) passes through the sixth connecting plate (5111), the cavity wall of the housing (10) and the seventh connecting plate (5113); a turner (522) mounted on the end of the driving shaft (5211) of the driving motor (521), the turner (522) being provided with a turn slot (5221), and when the third driving member (512) drives the second bracket (511) and the driving motor (521) to approach the mounting frame (6), the connecting shaft (61) at one end of the mounting frame (6) close to the flip assembly (5) is inserted into the turn slot (5221); When the third driving member (512) drives the second bracket (511) and the driving motor (521) away from the mounting frame (6), the connecting shaft (61) at one end of the mounting frame (6) close to the flip assembly (5) is disengaged from the turning groove (5221).

5. The double-sided coating device according to claim 1, characterized in that: The telescopic drive assembly (2) comprises: A plurality of connecting rods (21), the plurality of connecting rods (21) corresponding to the plurality of protective covers (3) one by one, the rotating frame (1) being provided with a plurality of radially extending slide grooves (13), the first end of the connecting rod (21) being slidably connected to the slide groove (13), and the first end of the connecting rod (21) being connected to the protective cover (3); A first driving component (22), the second end of the connecting rod (21) is hinged to the output end of the first driving component (22), and the first driving component (22) can drive the second end of the connecting rod (21) to move along the axial direction of the rotating frame (1).

6. The double-sided coating device according to claim 1, characterized in that: The telescopic drive assembly (2) comprises a second drive component (23), a rotating disk (24) and a plurality of connecting blocks (25); the second drive component (23) is arranged on the rotating frame (1), and the second drive component (23) is drivingly connected to the rotating disk (24); the second drive component (23) is used to drive the rotating disk (24) to rotate; a plurality of arc grooves (241) are arranged on the rotating disk (24); the plurality of arc grooves (241), the plurality of connecting blocks (25) and the plurality of protective covers (3) correspond to each other in a one-to-one manner; the arc grooves (241) extend from the inside to the outside; a convex key (251) is arranged at the bottom of the first end of the connecting block (25); the convex key (251) is slidably connected to the arc groove (241); and the second end of the connecting block (25) is connected to the protective cover (3).

7. The double-sided coating device according to any one of claims 1 to 6, characterized in that: The device also comprises a connecting assembly (4), wherein the connecting assembly (4) comprises a third connecting plate (41), a connecting rod (42), and a fourth connecting plate (43) which are connected in sequence, wherein the third connecting plate (41) is connected to the output end of the telescopic driving assembly (2), and the fourth connecting plate (43) is connected to the protective cover (3); The rotating frame (1) is provided with a guide hole extending in the radial direction, and the connecting rod (42) is slidably connected to the guide hole.

8. The coating device according to claim 7, characterized in that: The connecting assembly (4) further comprises a dislocation component (44), wherein the dislocation component (44) is located between the fourth connecting plate (43) and the connecting rod (42), and the dislocation component (44) comprises: a fifth connecting plate (441), one side of the fifth connecting plate (441) being connected to the connecting rod (42); A buffer shaft (442), a second bearing seat is arranged on the fifth connecting plate (441), one end of the buffer shaft (442) is connected to the fourth connecting plate (43), and the other end is slidably connected to the second bearing seat; An elastic member (443) is arranged between the fifth connecting plate (441) and the fourth connecting plate (43).

9. The coating device according to claim 8, characterized in that: The elastic member (443) is a spring, which is sleeved on the buffer shaft (442), and the two ends of the spring are respectively connected to the fifth connecting plate (441) and the fourth connecting plate (43); the original lengths of the springs of the adjacent offset components (44) along the circumference of the rotating frame (1) are different.

10. A coating method, characterized in that: Using the double-sided coating device according to any one of claims 1 to 9, the coating method comprises the following steps: Mounting the product to be coated on a mounting frame (6); The telescopic driving assembly (2) drives the protective cover (3) to move outward in the radial direction of the rotating frame (1), so that the protective cover (3) is arranged on the side of the product to be coated close to the axis of the rotating frame (1); Coating the product to be coated on the side of the product that is away from the axis of the rotating frame (1); The telescopic driving component (2) drives the protective cover (3) to move radially inwardly along the rotating frame (1), so that the protective cover (3) is separated from the product to be coated; The rotating frame (1) rotates the mounting frames (6) to be flipped to the flipping position in sequence, and all the mounting frames (6) are flipped 180° by the flipping assembly (5); The telescopic drive assembly (2) drives the protective cover (3) to move radially outwards along the rotating frame (1) again, so that the protective cover (3) is arranged on the side of the product to be coated close to the axis of the rotating frame (1); coating the product to be coated again on the side of the product to be coated which is away from the axis of the rotating frame (1); The telescopic driving component (2) drives the protective cover (3) to reset.

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