Coating equipment and method

Abstract

The invention discloses coating equipment and method and relates to the field of coating, the coating equipment comprises a conveying line assembly, a clamp assembly and a dip-coating assembly, and the clamp assembly comprises a top plate assembly, a hanging plate, a hinge piece, a first elastic piece and a lifting rod; the dip-coating assembly comprises an oil tank assembly and a lifting driving assembly, the coating equipment conducts coating on the surface of a workpiece through the oil tank assembly, the lifting driving assembly lifts a hanging plate upwards through a lifting rod so that the workpiece can rotate by a preset angle, and materials slide downwards in the diagonal direction of the workpiece under the action of gravity; therefore, the sliding materials cannot be accumulated at the lower edge position of the workpiece, the material accumulation point positions can be effectively reduced, and the coating uniformity is improved; the coating method comprises the steps that the oil tank assembly is used for coating the workpiece, then the hanging plate and the workpiece rotate by the preset angle around the preset direction relative to the top plate assembly, the workpiece keeps the posture of the preset angle for a certain time, and the uniformity after coating is good through the coating method.

Description

Technical Field

[0001] The present application relates to the coating field, and in particular to a coating device and method. Background Art

[0002] During the production of PCB boards (printed circuit boards), a series of processes including dip coating are required. The existing equipment has the following problems: 1. Figure 1 As shown, after the workpiece is dipped, the material accumulates on the lower edge of the workpiece due to gravity before solidification (as shown by label 410), resulting in the formation of a material accumulation area (as shown by label 420) at the bottom edge line of the workpiece. Multiple material accumulation points will be formed in this area, resulting in poor uniformity of the overall coating; 2. The dip-coating process needs to be completed by multiple devices, each of which has low integration, occupies a large area, and the production rhythm cannot be effectively controlled; 3. A servo motor is used to drive the conveyor line to make the workpiece move along the length direction of the conveyor line. On the one hand, this method is costly, and on the other hand, there is still the problem of movement accuracy not meeting the standard. Summary of the invention

[0003] The embodiments of the present application provide a coating device and method, which can effectively reduce material accumulation points and improve coating uniformity.

[0004] In a first aspect, the present application provides a coating device, comprising: A conveyor line assembly, used for conveying the fixture assembly along a predetermined direction; The fixture assembly includes a top plate assembly, a hanging plate, a hinge, a first elastic member and a lifting rod; the top plate assembly is connected to the conveyor line assembly; the hanging plate is hinged to the top plate assembly through the hinge, so that the hanging plate can rotate around a predetermined direction relative to the top plate assembly; the workpiece to be coated is arranged on the hanging plate; the two ends of the first elastic member are respectively connected to the top plate assembly and the hanging plate, so that the hanging plate can rotate and reset around a predetermined direction; one end of the lifting rod is arranged on the hanging plate; The dipping assembly includes an oil tank assembly and a lifting drive assembly; the oil tank assembly is arranged on one side of the fixture assembly, and the oil tank assembly is used to coat the workpiece; the lifting drive assembly is arranged on one side of the oil tank assembly, and is used to lift the other end of the lifting rod upward so that the hanging plate can rotate relative to the top plate assembly around a predetermined direction and a predetermined angle.

[0005] In the second aspect, the present application provides a coating method, including the use of a coating device, the coating method comprising: the workpiece is mounted on the hanging plate of the fixture assembly; the conveyor line assembly conveys the fixture assembly and the workpiece to the top of the oil tank assembly, and the oil tank assembly coats the workpiece; then the lifting drive assembly lifts the lifting rod of the fixture assembly upward, so that the hanging plate and the workpiece rotate at a predetermined angle in a predetermined direction relative to the top plate assembly, and after the workpiece maintains the posture at the predetermined angle for a certain period of time, the lifting drive assembly moves downward, the lifting rod is reset under the elastic force of the first elastic member, and the coating work is completed.

[0006] The coating equipment and method of the present application have at least the following beneficial effects: The coating equipment of the present application conveys the fixture assembly in a predetermined direction through the conveyor line assembly, the workpiece is mounted on the fixture assembly, and the dipping assembly is provided with a lifting drive assembly that can cooperate with the fixture assembly. When the workpiece is conveyed to the corresponding range of the oil tank assembly, the oil tank assembly coats the surface of the workpiece, and then the lifting drive assembly lifts the hanging plate upward through the lifting rod, so that the hanging plate and the workpiece are both rotated around the predetermined direction by a predetermined angle. At this time, the bottom edge line of the workpiece is in a non-parallel state with the horizontal plane, and the material coated on the surface of the workpiece slides downward in the diagonal direction of the workpiece under the action of gravity. Therefore, the sliding material will not accumulate at the lower edge position of the workpiece, which can effectively reduce the points of material accumulation and improve the uniformity of coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings: Figure 1 It is a schematic diagram of the surface of the workpiece after the material is coated (the arrow indicates the direction in which the material slides); Figure 2 is a top view of the coating device of the present application; Figure 3 is an axonometric view of the coating apparatus of the present application; Figure 4 yes Figure 3 The enlarged view of point A in the middle; Figure 5 It is the first partial schematic diagram of the power assembly and the elliptical guide assembly in this application; Figure 6 is a second partial schematic diagram of the power assembly and the elliptical guide assembly in the present application; Figure 7 It is a horizontal cross-sectional view of the lever and mounting rod of the power assembly (only the partial structure is shown); Figure 8 yes Figure 3 The enlarged view of point B in the middle; Fig. 9 is a schematic diagram of the structure of the clamp assembly in this application; Fig.10 yes Fig. 9 A schematic diagram from another angle; Fig.11 is a side view of the fixture assembly in the present application (M indicates the opening direction of the mounting slot); Fig.12 A front view of the fixture assembly in the present application (illustrating the state of the hanging plate and the workpiece after being lifted, and arrow F indicates the rotation direction of the hanging plate and the workpiece); Fig.13 is a schematic diagram of the structure of the dip coating assembly in this application; Fig.14 A front view of the dip coating assembly in this application; Fig.15 is a flow chart of the coating method in the present application; Description of the reference numerals is as follows: 100, conveyor line assembly; 110, elliptical guide rail assembly; 111, elliptical guide rail; 112, chain; 113, driving tooth; 120, slide assembly; 121, slide; 121a, positioning groove; 130, power assembly; 131, first telescopic member; 132, mounting rod; 1321, blocking portion; 1322, avoidance portion; 132a, U-shaped hinge groove; 133, lever; 1331, arc portion; 134, second elastic member; 140, positioning assembly; 141, third telescopic member; 142, rotating shaft; 143, connecting rod; 144, swing positioning rod; 1441, positioning portion; 200, clamp assembly; 210, top plate assembly; 211, first plate; 212, second plate; 213, limit bolt; 220, hanging plate; 220a, mounting groove; 221, elastic part; 230, hinge; 240, first elastic member; 250, lifting rod; 260, stop column; 270, third elastic member; 300, dip coating assembly; 310, oil tank assembly; 320, lifting drive assembly; 321, fourth telescopic member; 322, lifting platform; 330, lifting assembly; 400, workpiece; 410, lower edge of the workpiece; 420, material accumulation area; 430, mounting end of the workpiece; C 1 , loading and unloading station; C 2 , dipping station; C 3 , curing station; C 4 , cooling station; P, drying waiting station. DETAILED DESCRIPTION

[0008] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0009] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0010] This embodiment discloses a coating device and method. The coating device is used to coat the surface of a workpiece 400. First, the coating device of this embodiment is introduced.

[0011] like Figure 2 and Figure 3 As shown, the coating equipment includes a conveyor line assembly 100, a fixture assembly 200 and a dip coating assembly 300, as follows: like Figure 2 As shown, the conveyor line assembly 100 is used to convey the fixture assembly 200 along a predetermined direction. Along the predetermined direction, the lower part of the conveyor line assembly 100 is provided with loading and unloading stations C 1 , Dipping station C 2 , Curing Station C 3 And cooling station C 4The loading and unloading station is used for workers or manipulators to remove the workpiece 400 from the fixture assembly 200 or install the workpiece 400 on the fixture assembly 200. The dipping station is used to coat the surface of the workpiece 400 with materials, wherein the dipping assembly 300 is arranged at the dipping station, and is used to coat the surface of the workpiece 400 with materials. The curing station is used to cure the workpiece 400 after the materials are coated. It can be understood that the curing station is provided with a curing device, and the curing device is used to cure the workpiece 400. The specific structural form of the curing device can refer to the existing structure; the cooling station is used to cool the cured workpiece 400. It can be understood that the cooling station is provided with a cooling device, and the cooling device is used to cool the workpiece 400. The specific structural form of the cooling device can refer to the existing structure. This embodiment integrates multiple stations, and each station is equipped with corresponding functional equipment, which can improve the integration, reduce the floor space, and facilitate the control of the production rhythm.

[0012] like Figure 2 As shown, in some preferred embodiments, along a predetermined direction, the dipping station C 2 and curing station C 3 A drying waiting station P is also provided in between, and the workpiece 400 can wait for the next step of curing in the drying waiting station P after the material is coated on the surface.

[0013] like Figure 3 As shown, the conveyor line assembly 100 includes an elliptical guide rail assembly 110, a slide assembly 120 and a power assembly 130; the length direction of the elliptical guide rail assembly 110 is configured as a predetermined direction. In this embodiment, a closed elliptical guide rail assembly 110 is used to further save space and improve production rhythm; the slide assembly 120 is slidably arranged on the elliptical guide rail assembly 110, and the slide assembly 120 can slide on the elliptical guide rail assembly 110, and the sliding direction is the predetermined direction; wherein, the top plate assembly 210 of the clamp assembly 200 is connected to the slide assembly 120, and when the slide assembly 120 slides, the clamp assembly 200 slides together; the power assembly 130 is connected to the slide assembly 120, and is used to drive the slide assembly 120 to move in a predetermined direction, and the power assembly 130 can be an existing structural form (such as a gear chain plus a servo motor structure), or it can be the structural form described in this embodiment.

[0014] like Figure 3As shown, the elliptical guide rail assembly 110 includes an elliptical guide rail 111, a chain 112 and a driving tooth 113; the length direction of the elliptical guide rail 111 is configured as the predetermined direction, and the slide assembly 120 is slidably arranged on the elliptical guide rail 111. In this embodiment, there are multiple slide assemblies 120, and the multiple slide assemblies 120 are all slidably arranged on the elliptical guide rail 111; the chain 112 is arranged along the length direction of the elliptical guide rail 111, and the head and tail ends of the chain 112 are connected to form an elliptical ring chain 112. In this embodiment, the chain 112 is located on the inner side of the elliptical guide rail 111, and multiple slide assemblies 120 are all connected to the chain 112, and the chain 112 drives all the slide assemblies 120 to move in the same rhythm; there are two driving teeth 113, and the elliptical guide rail 111 has a straight rail part and two circular arc rail parts. The two driving teeth 113 are respectively and one by one concentrically arranged with the two circular arc rail parts of the elliptical guide rail 111, and the two driving teeth 113 are both meshed and connected with the chain 112. The driving teeth 113 are used to realize the movement of the chain 112 in the length direction of the elliptical guide rail 111.

[0015] like Figure 4 As shown, the slide assembly 120 includes a slide 121 and a guide wheel (not shown in the figure); the slide 121 is slidably arranged on the elliptical guide rail assembly 110; specifically, the slide 121 is slidably arranged on the elliptical guide rail 111, the slide 121 is connected to the chain 112, and the slide 121 can slide along the predetermined direction on the elliptical guide rail 111; the top plate assembly 210 of the clamp assembly 200 is connected to the slide 121, and the clamp assembly 200 can move together with the slide 121. The guide wheel is rotatably arranged on the slide 121, and the outer circumferential surface of the guide wheel is in rolling contact with the side surface of the elliptical guide rail 111.

[0016] In some other embodiments, the power assembly 130 may be a servo motor, and the output shaft of the servo motor is connected to the driving gear 113, thereby driving the chain 112 to drive the clamp assembly 200 to move. Although this method is also a feasible method, the servo motor used in this method is expensive, and the servo motor generally has a certain amount of rotation error, so it is necessary to compensate for the rotation error in the structure. The power assembly 130 of this embodiment cancels the rotation drive form of the servo motor and adopts a telescopic drive form, which is as follows: like Figure 6 As shown, a blocking column 260 is provided on the top plate assembly 210 of the clamp assembly 200. The blocking column 260 is vertically fixed on the first plate 211 or the second plate 212 of the top plate assembly 210, and the blocking column 260 extends vertically upward to a certain height. The blocking column 260 can cooperate with the power assembly 130, that is, the power assembly 130 can drive the blocking column 260 to move, thereby driving the entire clamp assembly 200 to move forward.

[0017] like Figure 5 and Figure 6 As shown, the power assembly 130 includes a first telescopic member 131, a mounting rod 132, a lever 133 and a second elastic member 134; the first telescopic member 131 is arranged on a horizontal side of the elliptical guide rail assembly 110, specifically, on a horizontal side of the elliptical guide rail 111, the telescopic direction of the first telescopic member 131 is configured as the predetermined direction, and the first telescopic member 131 is configured as a linear actuator such as a cylinder assembly; one end of the mounting rod 132 is connected to the moving end of the first telescopic member 131, and when the first telescopic member 131 is telescoped in the predetermined direction, it can drive the mounting rod 132 to move in the predetermined direction. The lever 133 is hinged at one end with the other end of the mounting rod 132, so that the lever 133 can rotate relative to the mounting rod 132 in the horizontal direction. The other end of the lever 133 is located between the blocking columns 260 of two adjacent clamp assemblies 200. From a horizontal perspective, the projections of the lever 133 and the blocking columns 260 overlap. The mounting rod 132 and the lever 133 are driven to move by the first telescopic member 131, and the lever 133 pushes the blocking column 260 to move forward, thereby pushing the entire clamp assembly 200 and the slide 121 to slide on the elliptical guide rail 111. In this embodiment, the power component 130 adopts a telescopic drive structure. On the one hand, the telescopic drive has higher precision (that is, the cylinder precision is higher) and low cost. On the other hand, the production rhythm can be controlled according to the telescopic rhythm of the first telescopic component 131, which is simple and easy to control.

[0018] like Figure 7As shown, the mounting rod 132 is provided with a blocking portion 1321 and an avoiding portion 1322, and the blocking portion 1321 abuts against the lever 133, specifically in the horizontal direction, so that when the lever 133 moves toward the blocking column 260 of the previous clamp assembly 200, the lever 133 can drive the blocking column 260 to move together. Since the lever 133 and the mounting rod 132 are hinged, the blocking portion 1321 is provided to block the rotation of the lever 133, so that when the lever 133 moves toward the blocking column 260, the lever 133 will not rotate, thereby allowing the first telescopic member 131 to smoothly drive the previous clamp assembly 200 to slide forward. The avoidance portion 1322 is used to ensure that the lever 133 has a rotational avoidance space when the lever 133 moves toward the blocking column 260 of the rear clamp assembly 200; since the lever 133 is located between two adjacent clamp assemblies 200, and all the clamp assemblies 200 are driven to slide synchronously by the chain 112, when the lever 133 pushes the front clamp assembly 200 forward, the rear clamp assembly 200 will also move forward. When the first telescopic member 131 performs a reset movement, the blocking column 260 of the rear clamp assembly 200 will collide with the lever 133. Therefore, the avoidance portion 1322 is provided so that the lever 133 has a rotational avoidance space when it contacts the blocking column 260 of the rear clamp assembly 200, so that the blocking column 260 of the rear clamp assembly 200 can pass forward over the lever 133 and move to the front of the lever 133 waiting for the lever 133 to push it away.

[0019] like Figure 7 As shown, in the present embodiment, preferably, a U-shaped hinge groove 132a is provided on the mounting rod 132, and one end of the lever 133 is hinged in the U-shaped hinge groove 132a; the horizontal inner side wall of the U-shaped hinge groove 132a is configured as the blocking portion 1321, and the horizontal inner side wall of the U-shaped hinge groove 132a is in close contact with the side wall of the lever 133; the horizontal inner side wall of the U-shaped hinge groove 132a is provided with an avoidance groove, and the avoidance groove is configured as the avoidance portion 1322.

[0020] like Figure 7 As shown, in the present embodiment, preferably, in order to facilitate the blocking column 260 of the subsequent clamp assembly 200 to pass forward over the lever 133, an arc portion 1331 is provided on the other end of the lever 133, and the blocking column 260 of the subsequent clamp assembly 200 can smoothly pass over the lever 133 after the outer peripheral surface of the blocking column 260 slides in contact with the arc portion 1331.

[0021] like Figure 7As shown, in this embodiment, the two ends of the second elastic member 134 are respectively connected to the mounting rod 132 and one end of the lever 133, and the second elastic member 134 is used to drive the lever 133 to reset, wherein the extension direction of the second elastic member 134 is configured as the predetermined direction. When the blocking column 260 of the next clamp assembly 200 is about to pass over the lever 133, the blocking column 260 contacts the lever 133 and pushes the lever 133 to rotate. At this time, the second elastic member 134 is pulled, so that the lever 133 has a tendency to rotate and reset. When the lever 133 is not in contact with the blocking column 260 (that is, after the blocking column 260 passes over the lever 133), the lever 133 can be reset to a state of being horizontally abutted against the blocking portion 1321 under the drive of the second elastic member 134.

[0022] like Figure 7 As shown, in this embodiment, the second elastic member 134 is preferably a tension spring, and the connection between the second elastic member 134 and the mounting rod 132 can be a direct connection or an indirect connection. The accompanying drawings illustrate an indirect connection. Whether it is a direct connection or an indirect connection, it does not affect the resetting function of the second elastic member 134 on the lever 133.

[0023] like Figure 8 As shown, in some preferred embodiments, the conveyor line assembly 100 also includes a positioning component 140, which is used for sliding positioning of the slide assembly 120. Since the fixture assembly 200 is connected to the slide assembly 120, the positioning component 140 is also used for positioning the fixture assembly 200.

[0024] like Figure 8As shown, the positioning assembly 140 includes a third telescopic member 141, a rotating shaft 142, a connecting rod 143 and a swing positioning rod 144, the third telescopic member 141 is arranged on the elliptical guide rail assembly 110; the rotating shaft 142 is rotatably connected to the elliptical guide rail assembly 110; the two ends of the connecting rod 143 are respectively connected to the rotating shaft 142 and the third telescopic member 141, and the third telescopic member 141 can drive the rotating shaft 142 to rotate through the connecting rod 143; one end of the swing positioning rod 144 is connected to the rotating shaft 142, and the other end is provided with a positioning portion 1441; a positioning groove 121a is provided on the slide assembly 120, and the positioning portion 1441 is swung into the positioning groove 121a to achieve the positioning of the slide assembly 120 and the fixture assembly 200. Specifically, the third telescopic member 141 is configured as a telescopic cylinder, the third telescopic member 141 is arranged on the elliptical guide rail 111, and the telescopic direction of the third telescopic member 141 is horizontal; the rotating shaft 142 is rotatably connected to the elliptical guide rail 111; one end of the connecting rod 143 is hinged to the telescopic end of the third telescopic member 141, and the other end of the connecting rod 143 is connected to the rotating shaft 142. When the third telescopic member 141 is telescoped, the rotating shaft 142 can rotate; one end of the swing positioning rod 144 is connected to the rotating shaft 142, and when the rotating shaft 142 rotates, the other end of the swing positioning rod 144 swings up and down, wherein the other end of the swing positioning rod 144 is provided with a positioning portion 1441, and the positioning portion 1441 is configured as a positioning bearing; a U-shaped positioning groove 121a is provided on the slide 121 of the slide assembly 120, and the positioning portion 1441 can swing into the positioning groove 121a, and the position of the slide 121 is limited by the positioning portion 1441.

[0025] In this embodiment, the positioning component 140 can limit the position of the slide 121 when the slide 121 is not required to slide, thereby facilitating the control of the production rhythm. In addition, in this embodiment, the clamp assembly 200 and the slide assembly 120 can be pushed forward by the first telescopic member 131, so the slide assembly 120 may have a smaller inertia when sliding. At this time, the slide assembly 120 is positioned by the positioning component 140 to ensure the position stability of the slide assembly 120 and the clamp assembly 200.

[0026] In the present embodiment, preferably, the number of the positioning components 140 may be one or more. For example, a positioning component 140 is correspondingly provided at each loading and unloading station and each dipping station.

[0027] like Fig. 9As shown, the fixture assembly 200 includes a top plate assembly 210, a hanging plate 220, a hinge 230, a first elastic member 240 and a lifting rod 250; the top plate assembly 210 is connected to the slide 121; the hanging plate 220 is hinged to the top plate assembly 210 through the hinge 230, so that the hanging plate 220 can rotate around a predetermined direction relative to the top plate assembly 210; the workpiece 400 to be coated is arranged on the hanging plate 220; the two ends of the first elastic member 240 are respectively connected to the top plate assembly 210 and the hanging plate 220, so that the hanging plate 220 can rotate and reset around a predetermined direction; one end of the lifting rod 250 is arranged on the hanging plate 220.

[0028] like Fig.10 As shown, the top plate assembly 210 includes a first plate 211, a second plate 212 and a limiting bolt 213; the first plate 211 and the second plate 212 are arranged opposite to each other in the height direction, and the first plate 211 and the second plate 212 are connected by a connecting column; the first plate 211 is connected to the slide 121 of the conveyor line assembly 100; the second plate 212 is hinged to the hanging plate 220 through a hinge 230; the limiting bolt 213 is threadedly connected to the second plate 212, and the limiting bolt 213 and the lifting rod 250 are respectively located on both horizontal sides of the hanging plate 220. The axial configuration of the limiting bolt 213 is the height direction, and the limiting bolt 213 can be screwed in downward or screwed back upward, and the lower end of the limiting bolt 213 can be against the hanging plate 220, thereby limiting the rotation of the hanging plate 220. The angle of the hanging plate 220 in the initial state can be controlled by adjusting the displacement of the limit bolt 213 screwed downward. When the hanging plate 220 is reset, the limit bolt 213 can realize the resistance and limit function of the hanging plate 220, so that it can quickly stabilize in the initial state after reset. In some preferred embodiments, the limit bolt 213 can be in elastic contact with the hanging plate 220. For example, the hanging plate 220 is provided with an elastic part 221 (which can be made of rubber or sponge) corresponding to the limit bolt 213. The elastic part 221 can resist the limit bolt 213, which can reduce the vibration of the hanging plate 220 when it is reset.

[0029] like Fig.10 and Fig.12 As shown, the hanging plate 220 is located below the top plate assembly 210, specifically below the second flat plate 212, and the upper end of the hanging plate 220 and the lower end of the second flat plate 212 are hinged together through a hinge 230 (such as a hinge shaft), so that the hanging plate 220 can be rotated relative to the second flat plate 212 around a predetermined direction with the hinge 230 as the rotation center. The workpiece 400 is arranged below the hanging plate 220, and when the hanging plate 220 rotates, the workpiece 400 also rotates, thereby adjusting the posture of the workpiece 400 to avoid the formation of material accumulation points at the bottom edge of the workpiece 400.

[0030] like Fig.11As shown, in some preferred embodiments, a plurality of mounting grooves 220a for mounting the workpiece 400 are provided on the hanging plate 220, and the plurality of mounting grooves 220a are arranged at intervals along the predetermined direction, and the length direction of the mounting groove 220a is perpendicular to the predetermined direction, and the mounting end 430 of the workpiece slides into the mounting groove 220a along the length direction of the mounting groove 220a, and a baffle (not marked) is provided on the open end surface of the mounting groove 220a, and at least a portion of the baffle extends to the opening position of the mounting groove 220a, and the mounting end 430 of the workpiece is blocked by the portion of the baffle extending to the opening position of the mounting groove 220a, thereby preventing the workpiece 400 from falling downward out of the mounting groove 220a. The opening direction (labeled as M) of the mounting groove 220a forms an angle (labeled as β) greater than ninety degrees with the predetermined direction. The opening direction of the mounting groove 220a is the depth direction of the mounting groove 220a. The angle β formed by the opening direction M and the predetermined direction is preferably in the range of 95 degrees to 130 degrees, and is further preferably 110 degrees. By tilting the mounting groove 220a below the hanging plate 220, after the workpiece 400 is installed in the mounting groove 220a, the workpiece 400 is also tilted, so that the material at the bottom of the workpiece 400 can completely slide to the end point of the diagonal of the workpiece 400.

[0031] The first elastic member 240 is used to drive the hanging plate 220 to reset to an initial state, and the initial state of the hanging plate 220 is parallel to the second flat plate 212 of the top plate assembly 210, wherein the first elastic member 240 is configured as a torsion spring, which is coaxially sleeved on the outer periphery of the hinge 230, and one end of the torsion spring is against the hanging plate 220, and the other end is against the second flat plate 212 of the top plate assembly 210.

[0032] like Fig.12 As shown, one end of the lifting rod 250 is connected to the hanging plate 220, and the other end of the lifting rod 250 extends horizontally to the outside in a direction away from the conveyor line assembly 100, so that the lifting drive assembly 320 of the dipping assembly 300 can lift the hanging plate 220 through the lifting rod 250, so that the hanging plate 220 can rotate relative to the top plate assembly 210 by a predetermined angle (the predetermined angle is shown as the label θ).

[0033] like Fig.12As shown, in some preferred embodiments, the clamp assembly 200 further includes a third elastic member 270; the two ends of the third elastic member 270 are respectively connected to the hanging plate 220 and the top plate assembly 210, and the third elastic member 270 is pulled when the lifting rod 250 is lifted. Specifically, the third elastic member 270 is configured as a tension spring, and the two ends of the third elastic member 270 are respectively connected to the hanging plate 220 and the second flat plate 212. When the lifting drive assembly 320 lifts the lifting rod 250 upward, one side of the hanging plate 220 is lifted upward, and the other side of the hanging plate 220 rotates and tilts downward. Since the third elastic member 270 is connected to the other side of the hanging plate 220, when the hanging plate 220 is lifted, the third elastic member 270 is pulled and makes the hanging plate 220 have a tendency to return to the initial state. In this embodiment, the third elastic member 270 can play a substitute role when the first elastic member 240 fails, and can increase the elastic resistance of the hanging plate 220 to be lifted, so that the hanging plate 220 is slowly and stably lifted.

[0034] like Fig.13 As shown, the dipping assembly 300 includes an oil tank assembly 310 and a lifting drive assembly 320; the oil tank assembly 310 is arranged on one side of the fixture assembly 200. In this embodiment, the fixture assembly 200 moves in a predetermined direction along with the slide 121, so the oil tank assembly 310 is arranged on the sliding path of the slide 121, and the oil tank assembly 310 is used to coat the surface of the workpiece 400. The oil tank assembly 310 can be the structure described in this embodiment, or it can be an existing spray gun manipulator. The lifting drive assembly 320 is arranged on one side of the oil tank assembly 310, and the lifting drive assembly 320 is used to lift the other end of the lifting rod 250 upward, so that the hanging plate 220 rotates relative to the top plate assembly 210 around a predetermined direction and a predetermined angle.

[0035] like Fig.14As shown, in some embodiments, preferably, the dipping assembly 300 also includes a lifting assembly 330, which is disposed on a horizontal side of the oil tank assembly 310, and the lifting assembly 330 is connected to the oil tank assembly 310, and the lifting assembly 330 can drive the oil tank assembly 310 to move up and down in the height direction, and the oil tank assembly 310 is provided with a material for coating inside. In the conventional technology, the coating process is either to drive the workpiece 400 downward through a driving mechanism and immerse it in the oil tank for coating, or to spray it using a spray gun or other spraying mechanism. Of the above two methods, the use of a driving mechanism to drive the workpiece 400 downward requires the design of a lifting driving mechanism on all fixtures, which has high cost and structural complexity. Although the spray gun method does not require driving the workpiece 400 downward, this method is not suitable for all working conditions and has poor adaptability. Therefore, the present embodiment adopts reverse thinking for the first method, by driving the oil tank assembly 310 to rise, so that the workpiece 400 can still be immersed in the oil tank assembly 310 without driving the workpiece 400 downward, which has a simple structure and good adaptability.

[0036] like Fig.14 As shown, the lifting drive assembly 320 of this embodiment includes a fourth telescopic member 321 and a lifting platform 322; the fourth telescopic member 321 is arranged on the horizontal side of the oil tank assembly 310. In this embodiment, the fourth telescopic member 321 is fixedly installed on the external structure, and the telescopic direction of the fourth telescopic member 321 is configured as the height direction. The fourth telescopic member 321 can be a telescopic cylinder or a servo electric cylinder. The lifting platform 322 is arranged on the telescopic end of the fourth telescopic member 321, and the lifting platform 322 can be driven to move up and down by the telescopic action of the fourth telescopic member 321. Among them, the lifting rod 250 of the clamp assembly 200 can move to the top of the lifting platform 322, and then the fourth telescopic member 321 can drive the lifting platform 322 to move upward, and the lifting platform 322 thereby lifts the hanging plate 220 upward through the lifting rod 250, so that the hanging plate 220 rotates.

[0037] In this embodiment, the dipping assembly 300 includes an oil tank assembly 310, a lifting drive assembly 320 and an oil tank lifting assembly 330, and the oil tank assembly 310, the lifting drive assembly 320 and the oil tank lifting assembly 330 are all arranged in the dipping station.

[0038] This embodiment also discloses a coating method, including using a coating device, the coating method comprising: The workpiece 400 is mounted on the hanging plate 220 of the fixture assembly 200; The conveyor line assembly 100 conveys the fixture assembly 200 and the workpiece 400 to the top of the oil tank assembly 310, and the oil tank assembly 310 coats the workpiece 400; Then, the lifting drive assembly 320 lifts the lifting rod 250 of the clamp assembly 200 upward, so that the hanging plate 220 and the workpiece 400 rotate relative to the top plate assembly 210 in a predetermined direction and by a predetermined angle (such as Fig.12 As shown), after the workpiece 400 maintains the predetermined angle for a certain period of time, the lifting drive assembly 320 moves downward, and the lifting rod 250 is reset under the elastic force of the first elastic member 240, and the coating work is completed.

[0039] After coating the material on the surface of the workpiece 400 , the coating method of this embodiment rotates the workpiece 400 upward to a predetermined angle so that the material does not slide and accumulate at the lower edge of the workpiece 400 , which can effectively reduce material accumulation points and improve coating uniformity.

[0040] In this embodiment, after the material is coated on the surface of the workpiece 400, the hanging plate 220 and the workpiece 400 are driven by the lifting drive assembly 320 to rotate relative to the second flat plate 212 around a predetermined direction and a predetermined angle (such as Fig.12 The predetermined angle θ is in the range of 10 to 45 degrees, for example, 10, 20, 30 or 45 degrees, and 30 degrees is further preferred in this embodiment. The hanging plate 220 and the workpiece 400 are rotated and lifted upward within the range of 10 to 45 degrees, which can effectively avoid the occurrence of bad accumulation points at the bottom edge of the workpiece 400.

[0041] like Fig.15 As shown, in this embodiment, preferably, the coating method of this embodiment includes: Step S100, loading the workpiece 400 onto the hanging plate 220 of the fixture assembly 200 at the loading and unloading station, specifically: a worker or a robot installs the workpiece 400 into the installation groove 220a of the hanging plate 220; Step S200, the conveyor line assembly 100 conveys the fixture assembly 200 with the workpiece 400 installed to the dipping station along a predetermined direction, and the oil tank assembly 310 arranged at the dipping station moves upward, so that the workpiece 400 is immersed in the material of the oil tank assembly 310, and then the oil tank assembly 310 is lowered, and the workpiece 400 is separated from the oil tank assembly 310; specifically: the slide 121 of the conveyor line assembly 100 is driven by the first telescopic member 131, and moves to the dipping station together with the fixture assembly 200 and the workpiece 400, and the oil tank lifting assembly 330 of the dipping station lifts the oil tank assembly 310 upward, and the oil tank assembly 310 is filled with materials, and the workpiece 400 is completely immersed in the materials of the oil tank assembly 310, and then after waiting for a period of time (the specific time range is selected according to actual conditions), the oil tank lifting assembly 330 drives the oil tank assembly 310 to descend, so that the workpiece 400 and the oil tank assembly 310 are separated from each other up and down; In step S300, the lifting drive assembly 320 of the dipping station lifts the lifting rod 250 upward, so that the hanging plate 220 and the workpiece 400 rotate around a predetermined direction and a predetermined angle. After the workpiece 400 maintains the posture of the predetermined angle for a certain period of time, the lifting drive assembly 320 moves downward, and the lifting rod 250 is reset under the elastic force of the first elastic member 240; specifically, the fourth telescopic member 321 of the lifting drive assembly 320 drives the lifting platform 322 to move upward, and the lifting platform 322 lifts the lifting rod 250 upward, so that the hanging plate 220 rotates a predetermined angle with the hinge 230 as the rotation center (at this time, the first elastic member 240 and the third elastic member 270 both have a reset trend), and the workpiece 400 maintains the posture of the predetermined angle for a certain period of time, and the certain period of time here is selected according to actual conditions, and then the lifting platform 322 resets downward, and the hanging plate 220 is also reset to the initial state under the action of the first elastic member 240 and the third elastic member 270, and at this time the lower edge of the workpiece 400 is parallel to the horizontal plane; Step S400: The conveyor line assembly 100 conveys the fixture assembly 200 and the workpiece 400 to the curing station along a predetermined direction, and the workpiece 400 is cured in the curing station. Specifically, the slide 121 and the fixture assembly 200 move to the curing station together, and the material on the surface of the workpiece 400 is heated and cured by the curing equipment in the curing station. In step S500, the conveyor line assembly 100 conveys the fixture assembly 200 and the workpiece 400 to the cooling station along a predetermined direction. The workpiece 400 is cooled at the cooling station. After the workpiece 400 is cooled, it returns to the loading and unloading station for unloading. The coating work is completed. Specifically, the slide 121 moves to the cooling station together with the fixture assembly 200. After the workpiece 400 is cooled by the cooling equipment in the cooling station, it continues to move to the loading and unloading station together with the slide 121. A worker or a robot unloads the workpiece 400.

[0042] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A coating device, characterized in that: include: A conveyor line assembly, used for conveying the fixture assembly along a predetermined direction; The fixture assembly includes a top plate assembly, a hanging plate, a hinge, a first elastic member and a lifting rod; the top plate assembly is connected to the conveyor line assembly; the hanging plate is hinged to the top plate assembly through the hinge, so that the hanging plate can rotate around a predetermined direction relative to the top plate assembly; the workpiece to be coated is arranged on the hanging plate; the two ends of the first elastic member are respectively connected to the top plate assembly and the hanging plate, so that the hanging plate can rotate and reset around a predetermined direction; one end of the lifting rod is arranged on the hanging plate; The dipping assembly includes an oil tank assembly and a lifting drive assembly; the oil tank assembly is arranged on one side of the fixture assembly, and the oil tank assembly is used to coat the workpiece; the lifting drive assembly is arranged on one side of the oil tank assembly, and is used to lift the other end of the lifting rod upward so that the hanging plate can rotate relative to the top plate assembly around a predetermined direction and a predetermined angle.

2. The coating device according to claim 1, characterized in that: Along the predetermined direction, loading and unloading stations, a dipping station, a curing station and a cooling station are sequentially arranged below the conveyor line assembly; the dipping assembly is arranged at the dipping station.

3. The coating device according to claim 1, characterized in that: The conveyor line assembly includes an elliptical guide rail assembly, a slide assembly and a power assembly; The length direction of the elliptical guide rail assembly is configured as the predetermined direction; the slide assembly is slidably arranged on the elliptical guide rail assembly, and the top plate assembly of the clamp assembly is connected to the slide assembly; the power assembly is connected to the slide assembly for driving the slide assembly to move in the predetermined direction.

4. The coating device according to claim 3, characterized in that: The elliptical guide rail assembly includes an elliptical guide rail, a chain and a driving tooth; the length direction of the elliptical guide rail is configured as the predetermined direction; the chain is arranged along the length direction of the elliptical guide rail, and the head and tail ends of the chain are connected; the slide assembly is slidably arranged on the elliptical guide rail; two driving teeth are meshed and connected with the chain, and the driving teeth are used to realize the movement of the chain in the length direction of the elliptical guide rail; multiple slide assemblies are connected to the chain.

5. The coating device according to claim 3 or 4, characterized in that: A stop column is provided on the top plate assembly of the clamp assembly; The power assembly includes a first telescopic member, a mounting rod, a lever and a second elastic member; the first telescopic member is arranged on a horizontal side of the elliptical guide rail assembly, and the telescopic direction of the first telescopic member is configured as the predetermined direction; one end of the mounting rod is connected to the moving end of the first telescopic member; one end of the lever is hinged to the other end of the mounting rod, and the other end of the lever is located between the blocking columns of the two clamp assemblies; a blocking portion and an avoidance portion are provided on the mounting rod, and the blocking portion abuts against the lever, and is used to realize that when the lever moves toward the blocking column of the previous clamp assembly, the lever can drive the blocking column to move together, and the avoidance portion is used to realize that when the lever moves toward the blocking column of the next clamp assembly, the lever has a rotation avoidance space; the two ends of the second elastic member are respectively connected to the mounting rod and one end of the lever, and are used to drive the lever to reset.

6. The coating device according to claim 3 or 4, characterized in that: The conveyor line assembly also includes a positioning component; the positioning component includes a third telescopic member, a rotating shaft, a connecting rod and a swing positioning rod; the third telescopic member is arranged on the elliptical guide rail assembly; the rotating shaft is rotatably connected to the elliptical guide rail assembly; the two ends of the connecting rod are respectively connected to the rotating shaft and the third telescopic member, and the third telescopic member can drive the rotating shaft to rotate through the connecting rod; one end of the swing positioning rod is connected to the rotating shaft, and a positioning part is arranged on the other end; a positioning groove is arranged on the slide assembly, and the positioning part is swung into the positioning groove to realize the positioning of the slide assembly and the fixture assembly.

7. The coating device according to any one of claims 1 to 3, characterized in that: The top plate assembly includes a first plate, a second plate and a limiting bolt; the first plate and the second plate are arranged opposite to each other in the height direction, and the first plate and the second plate are connected by a connecting column; the first plate is connected to the conveyor line assembly; the second plate is hinged to the hanging plate through a hinge; the limiting bolt is threadedly connected to the second plate, and the limiting bolt is used to limit the position of the hanging plate.

8. The coating device according to claim 7, characterized in that: The hanging plate is provided with a plurality of mounting grooves for mounting workpieces, and the plurality of mounting grooves are arranged at intervals along the predetermined direction; the opening direction of the mounting groove forms an angle greater than ninety degrees with the predetermined direction.

9. The coating device according to claim 1, characterized in that: The first elastic member is configured as a torsion spring.

10. The coating device according to any one of claims 1 to 3, characterized in that: The clamp assembly also includes a third elastic member; the two ends of the third elastic member are respectively connected to the hanging plate and the top plate assembly, and the third elastic member is pulled when the lifting rod is lifted.

11. The coating device according to any one of claims 1 to 3, characterized in that: The dipping assembly also includes a lifting component; the lifting component is connected to the oil tank component and is used to drive the oil tank component to move in the height direction.

12. A coating method, characterized in that: The coating method comprises using the coating device according to any one of claims 1 to 11, and comprising: The workpiece is mounted on a hanging plate of the fixture assembly; The conveyor line assembly conveys the fixture assembly and the workpiece to the top of the oil tank assembly, and the oil tank assembly coats the workpiece; Then the lifting drive assembly lifts the lifting rod of the clamp assembly upward, so that the hanging plate and the workpiece rotate at a predetermined angle in a predetermined direction relative to the top plate assembly. After the workpiece maintains the posture at the predetermined angle for a certain period of time, the lifting drive assembly moves downward, and the lifting rod is reset under the elastic force of the first elastic member, and the coating work is completed.

13. The coating method according to claim 12, characterized in that: The predetermined angle ranges from 10 degrees to 45 degrees.

14. The coating method according to claim 12 or 13, characterized in that: include: Step S100, loading the workpiece onto the hanging plate of the fixture assembly at the loading and unloading station; Step S200: The conveyor line assembly conveys the fixture assembly with the workpiece installed to the dipping station along a predetermined direction, and the oil tank assembly arranged at the dipping station moves upward so that the workpiece is immersed in the material of the oil tank assembly, and then the oil tank assembly is lowered, and the workpiece is separated from the oil tank assembly; Step S300, the lifting drive assembly of the dipping station lifts the lifting rod upward, so that the hanging plate and the workpiece rotate around a predetermined direction and a predetermined angle. After the workpiece maintains the posture of the predetermined angle for a certain period of time, the lifting drive assembly moves downward, and the lifting rod is reset under the elastic force of the first elastic member; Step S400: The conveyor line assembly conveys the fixture assembly and the workpiece to a curing station along a predetermined direction, and the workpiece is cured in the curing station; Step S500: The conveyor line assembly conveys the fixture assembly and the workpiece to the cooling station along a predetermined direction. The workpiece is cooled at the cooling station. After the workpiece is cooled, it returns to the loading and unloading station for unloading. The coating work is completed.

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