Film coating clamp

Abstract

The utility model discloses a film coating clamp, which comprises a positioning mechanism arranged on a frame and comprising a plurality of supporting pieces arranged at the inner corners of the frame respectively and pressing components arranged on the supporting pieces; supporting structures are arranged on the supporting piece, and a clamping area is defined by the supporting structures; the pressing assembly comprises a body and a pressing piece, the body is arranged on the supporting piece outside the clamping area, the first end of the pressing piece is matched in the body in an elastic moving and rotating mode, and the second end of the pressing piece is provided with a leaning and pressing structure; the first end elastically moves towards the outside of the body under the action of the first drive and then rotates to enable the pressing structure to enter the clamping area from the outside of the clamping area under the action of the second drive, after the second drive and the first drive are removed, the first end elastically moves towards the inside of the body, and the pressing structure elastically presses and positions a processed object on the supporting piece arranged in the clamping area. The film coating device is simple and convenient to operate, can avoid the defects of scratches, scratches and the like, and improves the film coating quality.

Description

Technical Field

[0001] The utility model relates to the technical field of film coating processing, in particular to a film coating fixture. Background Art

[0002] Currently, when clamping plate-shaped products that require coating, such as fuel cell metal bipolar plates, the coating fixtures typically require additional auxiliary fixtures (such as spring hooks and dovetail clamps). This complicates the coating fixture structure and the clamping process, requiring more manpower. This not only increases the risk of product defects such as deformation, crushing, and scratches, but also significantly increases clamping time. Furthermore, the more and more complex the auxiliary fixtures, the greater the probability of defects caused by improper clamping operations.

[0003] Therefore, it is necessary to provide a coating fixture that is easy to operate and not prone to defects to meet the needs of efficient operation. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned defects in the prior art and provide a coating fixture.

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

[0006] The utility model provides a coating fixture, comprising:

[0007] frame;

[0008] A positioning mechanism is provided on the frame, the positioning mechanism comprising a plurality of supporting members provided at each inner corner of the frame, and a pressing assembly provided on each supporting member;

[0009] The support member is provided with a supporting structure, and each of the supporting structures forms a clamping area;

[0010] The pressing assembly includes a body and a pressing member, wherein the body is provided on the support member outside the clamping area, the first end of the pressing member is elastically movable and rotatably engaged in the body, and the second end is provided with a pressing structure;

[0011] The first end is elastically moved toward the outside of the main body by a first drive, and is then rotated by a second drive until the pressing structure enters the clamping area from outside the clamping area. After removing the second drive and the first drive, the first end is elastically moved toward the inside of the main body, and the pressing structure elastically presses and positions the processing object on the support member placed in the clamping area.

[0012] Furthermore, the frame includes two opposite side frames and an upper frame and a lower frame located between the two side frames, the four supporting members are arranged at the four inner corners of the frame, and the four supporting structures located on the four supporting members form the clamping area on the front side within the frame, and there are vacant areas between the clamping area and the upper frame and the lower frame.

[0013] Furthermore, the support structure includes a step-shaped support groove provided on the front side of the support member, the support groove is open toward the clamping area, the bottom surface of the support groove is used to pad a corner of the processing object, and the groove walls of each support groove surround the clamping area.

[0014] Furthermore, the main body is arranged on the front side of the support member, and a pin groove is provided on the top of the main body, and a step pin is provided on the first end to cooperate with the pin groove in movement and rotation. The pin groove has a bayonet at the top of the main body, and an elastic member is sleeved on the step pin, and both ends of the elastic member are restricted between the bayonet and the step surface of the step pin.

[0015] Furthermore, a knob and a connecting rod are provided on the clamping member between the first end and the second end, the knob is located on the top outer side of the main body, the bottom end of the knob is vertically connected to the step pin after passing through the bayonet, and the top end of the knob is connected to the pressing structure through the turned connecting rod, and the knob is used to be applied with the first drive and the second drive.

[0016] Furthermore, a limit pin is provided on the top of the main body, and a limit groove is provided on the bottom side of the knob to cooperate with the movement of the limit pin. The knob is driven by the first drive to drive the step pin to elastically move away from the main body. After the limit groove is out of the limit pin, the knob is then driven by the second drive to drive the step pin to rotate relative to the main body. When the limit groove is engaged in the limit pin, the pressing structure is in the vacant area.

[0017] Furthermore, the connecting rod has a first connecting rod segment and a second connecting rod segment connected to each other, the first connecting rod segment is connected to the knob, the second connecting rod segment is connected to the pressing structure, the first connecting rod segment is parallel to the bottom surface of the support groove, and the second connecting rod segment and the pin groove are perpendicular to the bottom surface of the support groove.

[0018] Furthermore, the height of the groove wall of the support groove is greater than the thickness of the corner of the processing object, and a positioning groove is provided on the front of the support member. The positioning groove is open on the groove wall of the support groove. When the pressing structure is pressed on the surface of the processing object, it is also partially located in the positioning groove to obtain positioning.

[0019] Furthermore, the pressing structure includes a connected cylindrical pressing block and a positioning block, the pressing block is coaxially connected to the second connecting rod segment, the positioning block is parallel to the bottom surface of the support groove, the pressing block is used to press the processing object, and the positioning block is used to extend into the positioning groove to position the pressing structure.

[0020] Furthermore, when there is a positioning hole on the corner of the processing object, a corresponding through hole is also provided on the bottom surface of the support groove, and a ball head is also protruding from the end surface of the pressure block facing the processing object. The ball head is used to fall into the positioning hole and the through hole when the pressing structure rotates to the positioning hole and presses the processing object. The diameter of the pressure block is larger than the aperture of the positioning hole; and / or the elastic member includes a spring.

[0021] As can be seen from the above technical solution, the present invention provides support members at each inner corner of the frame, a body is provided on the support members, and a pressing member that elastically moves and rotates with the body through a first end. By sequentially pulling and rotating the pressing member, the pressing structure provided on the second end of the pressing member can be moved from outside the clamping area into the clamping area, and the pressing member can be released to elastically press the pressing structure downward, thereby being able to elastically press the processing object placed on the support structure of each support member and located in the clamping area on the frame to obtain positioning. The present invention has the following advantages:

[0022] (1) Easy to operate. Compared with existing coating fixtures, the present invention can achieve easy positioning of the processing object (such as metal bipolar plates) through a simple pulling operation, which can greatly shorten the operation time and reduce labor, thereby improving process efficiency, reducing costs, and increasing production capacity.

[0023] (2) Good stability. Compared with the existing coating fixture, the present invention has higher stability, can effectively prevent the processing object from falling during the coating process or the manufacturing process, and can avoid shaking and prevent collisions.

[0024] (3) Wide applicability. For processing objects with positioning holes, the positioning position of the pressing structure on the pressing member can be adjusted according to the position of the positioning holes on the processing object; even for processing objects without positioning holes, it does not affect the fixed positioning of the processing object. The relative height of the pressing member can also be adjusted to adapt to processing objects of different thicknesses.

[0025] (4) By designing a body with a pin groove and cooperating with a step pin covered with an elastic member, the pressing structure on the pressing member can only be raised and lowered vertically along the pin groove and is not prone to deflection, thereby providing stability when fixing and positioning the processing object.

[0026] (5) High coating quality. The use of the utility model can avoid defects such as scratches and abrasions caused by the use of auxiliary fixtures in the past, thereby improving the coating quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural schematic diagram of a coating fixture according to a preferred embodiment of the present invention.

[0028] Figure 2 This is a schematic diagram comparing the states of a coating fixture before and after clamping in a preferred embodiment of the present invention. Figure 2 (a) is before clamping, and (b) is after clamping.

[0029] Figure 3 This is a structural schematic diagram of a support member according to a preferred embodiment of the present invention.

[0030] Figure 4-Figure 5 This is a structural schematic diagram of a compression assembly according to a preferred embodiment of the present invention.

[0031] Figure 6 for Figure 2 (a) A magnified schematic diagram of the idle state of the clamping assembly in part A.

[0032] Figure 7 for Figure 2 (b) A magnified schematic diagram of the working state of the clamping assembly in part B. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs. The words "including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0034] The specific implementation of the present invention is further described in detail below with reference to the accompanying drawings.

[0035] refer to Figure 1-Figure 7 The coating fixture of the present invention comprises a frame 1 and a positioning mechanism 2.

[0036] The positioning mechanism 2 is provided on the frame 1. The positioning mechanism 2 includes a plurality of supporting members 21 and a plurality of pressing assemblies 22 arranged in cooperation with each other. Among them, each supporting member 21 is provided at each inner corner of the frame 1, and the pressing assembly 22 is provided on each supporting member 21.

[0037] Furthermore, a support structure 23 is provided on the support member 21. The support structures 23 on each support member 21 together form a clamping area 5, such as Figure 1 As shown in the dotted box.

[0038] The pressing assembly 22 includes a body 24 and a pressing member 25. Figure 4 As shown. The main body 24 is provided on the support member 21, and the main body 24 is located on the support member 21 outside the clamping area 5. The first end of the pressing member 25 (refer to Figure 4 The left end of the pressing member 25 shown in FIG) is elastically movable and rotatably fitted in the body 24, and the second end of the pressing member 25 (reference Figure 4 A pressing structure 255 is provided at the right end of the pressing member 25 shown in FIG.

[0039] In the initial state, the first end of the pressing member 25 is elastically fitted in the body 24, and the pressing structure 255 on the second end of the pressing member 25 is placed outside the clamping area 5. Figure 2 (a) shown.

[0040] In the working state, the processing object 7 is first placed in the clamping area 5 and cushioned on the support 21. Figure 2 (a). Then, by applying a lifting driving force perpendicular to the frame surface to the pressing member 25, the first end of the pressing member 25 elastically moves away from the body 24 under the first driving action of the lifting driving force, and elastically moves a certain distance outward from the body 24 (but does not escape from the body 24). Then, by applying a rotational driving force parallel to the frame surface to the pressing member 25, the first end of the pressing member 25 continues to rotate relative to the body 24 under the second driving action of the rotational driving force, and rotates until the pressing structure 255 enters the clamping area 5 from outside the clamping area 5 and is located in the predetermined position. Next, by releasing the rotational driving force and the lifting driving force applied to the pressing member 25, the second and first driving forces are removed. When the second drive and the first drive are removed, the first end of the pressing member 25 will elastically move closer to the body 24 and elastically move into the body 24 until the pressing structure 255 on the second end of the pressing member 25 moves to contact the surface of the processing object 7, and elastically presses the processing object 7 to be positioned on the support member 21 in the clamping area 5 to complete the clamping. Figure 2 (b)

[0041] In some embodiments, the processing object 7 includes a plate-shaped processing object 7 to be coated with a certain shape. For example, the processing object 7 includes a metal bipolar plate 71 of a fuel cell. The shape of the metal bipolar plate 71 includes a rectangle (or an approximately rectangular shape, for example, the rectangular edge of the metal bipolar plate 71 may have some concave special-shaped contours, such as Figure 2 (a) and Figure 2 (b) The outline of the metal bipolar plate 71 is shown.

[0042] The present invention can achieve simple positioning of the processing object 7 (such as the metal bipolar plate 71) through a simple pulling operation, which can greatly shorten the operation time and reduce labor, thereby improving process efficiency, reducing costs and increasing production capacity.

[0043] In order to clearly express the present invention, Figure 2 The metal bipolar plate 71 shown in Figure 2 (a) and Figure 2 The two metal bipolar plates 71 shown in (b) may have different specifications such as structure and profile) are taken as the processing object 7 as an example, and the coating fixture (frame 1) is in a vertical state to hang and clamp the metal bipolar plate 71 in the vertical direction as an example to describe the specific implementation method of the present invention in detail.

[0044] refer to Figure 1-Figure 2 In some embodiments, the frame 1 includes a rectangular frame 1 corresponding to the shape of the rectangular metal bipolar plate 71. The frame 1 includes two vertically opposed side frames 11 and a horizontally opposed upper frame 12 and lower frame 13 located between the upper and lower ends of the two side frames 11, respectively.

[0045] Four support members 21 are located at the four inner corners of the rectangular frame 1. The four supporting structures 23 corresponding to the four support members 21 together form a clamping area 5 located within the frame 1 and on the front of the frame 1. In addition, there are vacant areas 4 between the clamping area 5 and the upper frame 12 and the lower frame 13. It is understood that the shapes of the four support members 21 and their supporting structures 23 can be the same, but they can also be different. For example, Figure 1 The shape of the support member 21 and its supporting structure 23 located in the lower left corner is not completely consistent with the shapes of the other three support members 21 and their supporting structures 23, so as to adapt to the contour shape of the corresponding corner end of the metal bipolar plate 71.

[0046] refer to Figure 1-Figure 3 In some embodiments, the support member 21 is mounted on the inner side of a side frame 11 of the frame 1 through an outer side edge and is located at the inner corner of the frame 1. The front side of the support member 21 (refer to Figure 1The surface of the middle support member 21 facing the drawing is parallel to the frame surface. It is understood that the support member 21 can also be installed on the upper frame 12 (lower frame 13). Alternatively, the support member 21 can also be installed on the side frame 11 and the upper frame 12 (side frame 11 and lower frame 13). The four support members 21 are separated from each other and arranged on the frame 1, as shown in FIG. Figure 1 However, it is not excluded that four supporting members 21 are connected and arranged on the frame 1.

[0047] In some embodiments, the inner sides of the two supporting members 21 located at the upper inner corners of the frame 1 are separated from each other, and together with the upper edge of the clamping area 5 and the upper frame 12, they form an empty area 4 located above the frame 1. The inner sides of the other two supporting members 21 located at the lower inner corners of the frame 1 are separated from each other, and together with the lower edge of the clamping area 5 and the lower frame 13, they form another empty area 4 located below the frame 1. Figure 1 shown.

[0048] In some embodiments, the support structure 23 includes a stepped support groove (half groove) provided on the front surface of the support member 21. The side of the support groove facing the clamping area 5 is open, so that the support groove has a groove wall 231 with a single-side turning shape and a flat bottom surface 232, as shown in FIG. Figure 1 The bottom surface 232 of the support groove on the front of each support member 21 is used to cushion a corner of the metal bipolar plate 71, as shown. Figure 2 The turning groove walls 231 of each supporting groove form a discontinuous clamping area 5 , and each supporting groove is located at a corresponding corner of the clamping area 5 .

[0049] In some embodiments, the bottom surface 232 of the support grooves on each support member 21 may have the same shape and size or may have different shapes and sizes. Figure 1 The shape and size of the bottom surface 232 of the support groove on the support member 21 located in the lower left corner are inconsistent with the shape and size of the bottom surface 232 of the support grooves on the other three support members 21, so as to adapt to the contour shape of the corresponding corner end of the metal bipolar plate 71 and ensure that sufficient supporting force is formed on the corner of the metal bipolar plate 71 at this position.

[0050] refer to Figure 1-Figure 5 In some embodiments, the body 24 is used for mounting and connecting with the support member 21. The body 24 is protrudingly provided on the front surface of the support member 21. Thus, the pressing assembly 22 is provided on the front surface of the support member 21 through the body 24.

[0051] In some embodiments, mounting holes 211 are provided on the surface of the support member 21 other than the support structure 23. Figure 3 The bottom of the body 24 is set to a cylindrical shape, as shown Figure 4-Figure 5By passing the bottom of the cylindrical body 24 through the mounting hole 211 on the surface of the support member 21 from the front of the support member 21 to be installed and fixed, the pressing assembly 22 is mounted on the front of the support member 21, as Figure 1-Figure 2 shown.

[0052] In some embodiments, the inner wall of the mounting hole 211 of the support 21 is provided with an internal thread, and the surface of the cylindrical bottom of the body 24 is correspondingly provided with an external thread, so that the body 24 is fastened to the support 21 by threaded engagement. Furthermore, the top side of the body 24 is configured as a hexagonal column to facilitate non-slip grip when installing the body 24. Figure 4 The diameter of the hexagonal column at the top of the body 24 is larger than the diameter of the column at the bottom of the body 24, forming a stepped columnar body 24.

[0053] In some embodiments, the top of the body 24 is further provided with a pin slot 242 located in the body 24, such as Figure 5 As shown, the first end of the pressing member 25 enters the pin groove 242 from the top of the body 24 to form a mutual fit.

[0054] In some embodiments, a step pin 251 is provided on the first end of the pressing member 25 to form a movable and rotational fit with the pin slot 242. The diameter of the step portion 258 of the step pin 251 is larger than the diameter of the pin portion 259 of the step pin 251. The step pin 251 forms a movable and rotational fit with the inner wall of the pin slot 242 through the side of the step portion 258. The pin slot 242 has a bayonet 243 at the top of the body 24. The gap of the bayonet 243 is smaller than the diameter of the step portion 258, but larger than the diameter of the pin portion 259. The upper end of the pin portion 259 of the step pin 251 passes through the bayonet 243 and is connected to the pressing structure 255. The step portion 258 of the step pin 251 is restricted by the bayonet 243 and cannot be moved out of the body 24 through the bayonet 243. The pin portion 259 of the step pin 251 is sleeved with an elastic member 26, and the upper and lower ends of the elastic member 26 are restricted between the bayonet 243 and the step surface of the step pin 251 (ie, the upper end surface of the step portion 258). Figure 5 shown.

[0055] By designing the main body 24 with a pin groove 242 as a base, and cooperating with the step pin 251 with an elastic member 26, the pin groove 242 acts as a guide track when the step pin 251 moves, so that the pressing structure 255 on the clamping member 25 can only be vertically raised and lowered along the pin groove 242, and is not prone to deflection, thereby ensuring the overall rigidity and reliability of the system, and having high stability when fixing and positioning the metal bipolar plate 71.

[0056] In some embodiments, the elastic member 26 includes a spring 261. The spring 261 provides elastic support, ensuring that the pressing member 25 can quickly respond to changes in external forces, such as a pulling operation or the influence of gravity, while maintaining sufficient stability to secure the metal bipolar plate 71. The pressing structure 255 moves up and down within the elastic force of the spring 261 and applies downward pressure under the elastic force of the spring 261 to ensure that the metal bipolar plate 71 is stably fixed in the predetermined position.

[0057] In some embodiments, when the clamping member 25 is in an idle initial state, the spring 261 (elastic member 26) is in a certain pre-compression state, so that the step pin 251 is elastically pulled into the pin groove 242, and in the working state, the spring 261 can continue to be compressed, so that the step pin 251 can be elastically pulled out of the pin groove 242 a certain distance when it is driven by the first drive.

[0058] In some embodiments, when the clamping member 25 is in the initial state, the spring 261 is in a relaxed state to avoid causing the spring 261 to always be in a stressed state, but it is necessary to make the distance that the step pin 251 in this state can move freely up and down in the pin slot 242 less than the maximum distance that the step pin 251 is elastically pulled out of the pin slot 242 when it is driven by the first drive.

[0059] In some embodiments, the pin slot 242 also has an opening on the bottom of the body 24, so that the bottom end of the step portion 258 of the step pin 251 can be exposed at the bottom of the body 24, as shown in FIG. Figure 4-Figure 5 This can increase the range of movement of the step pin 251 in the pin slot 242 and improve the smoothness of the step pin 251 when moving.

[0060] In some embodiments, a knob 253 and a connecting rod 254 are provided between the first end (step pin 251) and the second end (pressing structure 255) of the pressing member 25. Figure 4-Figure 5 As shown (connecting rod 254 is Figure 5 Not shown). The knob 253 is located on the outside of the top of the body 24, and the bottom end of the knob 253 is vertically connected to the step pin 251 after passing through the bayonet 243 of the pin slot 242. The top end of the knob 253 is connected to the pressing structure 255 through a connecting rod 254 in a turning shape. The knob 253 is used to be applied with the first drive and the second drive. That is, the pulling drive force and the rotational drive force are directly applied to the knob 253 and transmitted to the entirety of the pressing member 25 including the step pin 251 and the pressing structure 255. The knob 253 is used in conjunction with the pin slot 242, and the relative height of the step pin 251 in the pin slot 242 can be adjusted to adapt to metal bipolar plates 71 of different thicknesses.

[0061] In some embodiments, a circle of anti-slip grooves is provided on the circumference of the top of the knob 253, such as Figure 4 shown.

[0062] In some embodiments, a protruding stop pin 241 is provided on the top of the body 24 (on the top surface of the hexagonal column at the top of the body 24), and a stop slot 252 is provided on the bottom side of the knob 253 to move with the stop pin 241. Figure 4-Figure 5 When the knob 253 is driven by the first drive to drive the step pin 251 to elastically move away from the body 24 until the limiting groove 252 is out of the limiting pin 241, the knob 253 is then driven by the second drive to drive the step pin 251 to rotate relative to the body 24.

[0063] In some embodiments, the bottom side of knob 253 is configured as a hexagonal column, and the bottom of knob 253 has a downwardly open cavity, that is, knob 253 forms a bottle cap structure to reduce the weight of knob 253. A retaining groove 252 is defined on the side wall of the bottle cap structure (on the side surface of the bottom of knob 253). After passing through the retaining hole 243, the stepped pin 251 is connected to the bottom end of knob 253 through the open cavity at the bottom of knob 253.

[0064] In some embodiments, when the limiting groove 252 is engaged with the limiting pin 241, the position of the pressing member 25 is limited, and the pressing structure 255 is exactly located in the vacant area 4, as shown in FIG. Figure 1 and Figure 6 In this way, the metal bipolar plate 71 can be prevented from being interfered with by the pressing member 25 when being transferred to the support member 21 , and the pressing structure 255 can be protected when in standby state.

[0065] In some embodiments, the two supporting members 21 near the upper frame 12 are provided with accommodating notches 213 on their opposite inner sides, and the other two supporting members 21 near the lower frame 13 are also provided with accommodating notches 213 on their opposite inner sides. Figure 1 and Figure 6 (a) When the pressing structure 255 is located in the vacant area 4, the pressing member 25 and the pressing structure 255 thereon are precisely positioned corresponding to the receiving slot 213 and are in an idle state. In this position, if the distance between the opposing inner sides of the two supporting members 21 is set to be smaller than the distance between the two pressing structures 255 on the two supporting members 21, and the distance between the bottom ends of the two receiving slots 213 on the two supporting members 21 is set to be larger than the distance between the two pressing structures 255 on the two supporting members 21, the pressing structure 255 can be precisely positioned in the receiving slot 213 on the corresponding side, preventing accidental sliding, thereby providing better protection for the pressing structure 255.

[0066] refer to Figure 4-Figure 7In some embodiments, the connecting rod 254 has a first connecting rod segment and a second connecting rod segment connected to each other. One end of the first connecting rod segment is connected to the top of the knob 253, and one end of the second connecting rod segment is connected to the pressing structure 255. In addition, the first connecting rod segment is parallel to the bottom surface 232 of the support groove on the support member 21, and the second connecting rod segment and the pin groove 242 in the body 24 are perpendicular to the bottom surface 232 of the support groove. The other end of the first connecting rod segment is smoothly connected to the other end of the second connecting rod segment.

[0067] Combined with reference Figure 1 、 Figure 3 、 Figure 6-Figure 7 In some embodiments, the height of the groove wall 231 of the support groove is greater than the thickness of the corner of the metal bipolar plate 71. A positioning groove 212 is provided on the front surface of the support member 21. The positioning groove 212 opens on the groove wall 231 of the support groove. When the pressing structure 255 is pressed against the surface of the metal bipolar plate 71, it is also partially located in the positioning groove 212 to obtain positioning, such as Figure 7 shown.

[0068] Figure 6 The position of the pressing member 25 (the pressing structure 255) when in an idle state is shown. Figure 7 The figure shows the position of the pressing member 25 when it is in working state. Figure 6 The figure shows the state before the pressing member 25 is located in the vacant area 4 when the metal bipolar plate 71 is placed on the bottom surface 232 of the support groove. For comparison, Figure 7 The figure shows the working state in which the pressing member 25 moves into the clamping area 5 and presses the metal bipolar plate 71 when the metal bipolar plate 71 is placed on the bottom surface 232 of the support groove. Figure 7 It can be seen that when the pressing member 25 is in the position to press the metal bipolar plate 71, a portion of the pressing structure 255 is located above the bottom surface 232 of the support groove, which is used to press the surface of the corner end of the metal bipolar plate 71 placed on the bottom surface of the support groove. At the same time, another portion of the pressing structure 255 also extends into the positioning groove 212, so that the pressing member 25 can no longer swing in the rotation direction, thereby ensuring that the pressing member 25 is positioned. Figure 6 and Figure 7 It can also be seen that when the metal bipolar plate 71 is placed on the bottom surface 232 of the support groove, the four corners of the metal bipolar plate 71 are constrained by the transition groove walls 231 of the support groove on the four support members 21. At this time, by rotating the pressing member 25 above the metal bipolar plate 71 and loosening the pressing member 25, the pressing structure 255 is pressed against the metal bipolar plate 71, effectively pressing and positioning the metal bipolar plate 71.

[0069] refer to Figure 4 and Figure 7In some embodiments, the pressing structure 255 includes a connected cylindrical pressing block 257 and a positioning block 256. The pressing block 257 is coaxially connected to one end of the second connecting rod segment, and the positioning block 256 is parallel to the first connecting rod segment, that is, the positioning block 256 is parallel to the bottom surface 232 of the support groove. The pressing block 257 is used to press the metal bipolar plate 71, and the positioning block 256 is used to extend into the positioning groove 212 on the support member 21 to position the pressing structure 255 and prevent the pressing structure 255 from slipping when pressing the metal bipolar plate 71, thereby preventing the pressing effect from being unstable.

[0070] The utility model can effectively prevent the metal bipolar plate 71 from falling during the coating process or the manufacturing process, and can also prevent shaking and collision.

[0071] Furthermore, when the corner of the metal bipolar plate 71 has a positioning hole 711, as shown in FIG. Figure 6 and Figure 2 As shown in (a), a through hole 233 is also provided on the bottom surface 232 of the support groove. Figure 1 As shown, the end surface of the pressing block 257 facing the metal bipolar plate 71 also features a protruding ball head (not shown). When the pressing structure 255 rotates to the positioning hole 711 of the metal bipolar plate 71 and compresses the metal bipolar plate 71, the ball head is designed to drop into the positioning hole 711 and the through-hole 233, thereby better positioning the metal bipolar plate 71. In this state, the diameter of the pressing block 257 needs to be larger than the diameter of the positioning hole 711. The positioning groove 212 on the support member 21 also needs to be positioned to align with the positioning hole 711 on the metal bipolar plate 71 and the orientation of the positioning block 256 when rotated into position. For example, the positioning groove 212 and the mounting hole 211 can be arranged so that they are aligned parallel to the side frame 11. Accordingly, the connecting rod 254 on the pressing member 25 in the compressed state is also oriented parallel to the side frame 11. When there is no positioning hole 711 on the corner of the metal bipolar plate 71, the direction of the connecting rod 254 on the clamping member 25 in the clamping state can be parallel to the side frame 11 or slightly offset, as long as the corresponding corner of the metal bipolar plate 71 is effectively pressed.

[0072] Therefore, for the metal bipolar plate 71 with the positioning hole 711, the positioning position of the pressing structure 255 on the pressing member 25 can be adjusted by finely controlling the rotation angle of the knob 253 according to the position of the positioning hole 711 on the metal bipolar plate 71, so that the ball head on the pressing block 257 is accurately aligned with the center of the positioning hole 711, thereby further enhancing the accuracy and stability of the fixation. Even for the metal bipolar plate 71 without the positioning hole 711 (refer to Figure 2The upper right and lower left corners of the metal bipolar plate 71 (a), which lack positioning holes 711, can also be directly compressed using the pressure of the pressing structure 255 without affecting the secure positioning of the metal bipolar plate 71. Furthermore, the elastic expansion and contraction of the spring 261 allows the relative height of the pressing member 25 to be adjusted to accommodate metal bipolar plates 71 of varying thicknesses.

[0073] refer to Figure 1 In some embodiments, a first rotation axis 3 is vertically disposed in the middle of the upper frame 12, and a second rotation axis 6 is vertically disposed in the middle of the lower frame 13. The first rotation axis 3 and the second rotation axis 6 constitute the rotation axis of the frame 1. The first rotation axis 3 and the second rotation axis 6 are used to mate with the turntable in the coating equipment, allowing the coating fixture frame 1 to revolve with the turntable and rotate relative to the turntable.

[0074] When the present invention is used, after the metal bipolar plate 71 to be clamped and fixed is in place on the clamping area 5 of the frame 1, the knob 253 on the clamping assembly 22 is first lightly lifted to overcome the resistance of the spring 261 in the pin groove 242, so that the limit groove 252 on the knob 253 is separated from the constraint of the limit pin 241 on the body 24, so as to implement the next rotation.

[0075] Then, based on the positioning holes 711 on the metal bipolar plate 71, the knob 253 is rotated a certain angle to achieve the final positioning of the pressing structure 255. After completing the above steps, the knob 253 is slowly released. With the rebound force of the spring 261, the pressing structure 255 descends until it contacts the surface of the metal bipolar plate 71, forming a secure clamping effect.

[0076] When facing a metal bipolar plate 71 without positioning holes 711 , the pressing structure 255 directly and effectively clamps the metal bipolar plate 71 by relying on its own vertical pressure without the need for additional adjustment.

[0077] In summary, the present invention provides support members 21 at each inner corner of the frame 1, a body 24 disposed on the support members 21, and a pressing member 25 that elastically moves and rotates with the body 24 at its first end. By sequentially lifting and rotating the pressing member 25, the pressing structure 255 disposed on the second end of the pressing member 25 can be moved from outside the clamping area 5 into the clamping area 5. The pressing member 25 is then released, allowing the pressing structure 255 to elastically press downward. This allows the treatment object 7 (metal bipolar plate 71) placed on the support structure 23 of each support member 21 and located in the clamping area 5 to be elastically pressed against the frame 1 to achieve positioning. The present invention avoids defects such as scratches and abrasions previously associated with the use of auxiliary jigs, thereby improving the quality of the coating.

[0078] While the embodiments of the present invention have been described in detail above, it will be apparent to those skilled in the art that various modifications and variations may be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as set forth in the claims. Furthermore, the present invention described herein may have other embodiments and may be implemented or carried out in a variety of ways.

Claims

1. A coating fixture, characterized in that: include: frame; A positioning mechanism is provided on the frame, the positioning mechanism comprising a plurality of supporting members provided at each inner corner of the frame, and a pressing assembly provided on each supporting member; The support member is provided with a supporting structure, and each of the supporting structures forms a clamping area; The pressing assembly includes a body and a pressing member, wherein the body is provided on the support member outside the clamping area, the first end of the pressing member is elastically movable and rotatably engaged in the body, and the second end is provided with a pressing structure; The first end is elastically moved toward the outside of the main body by a first drive, and is then rotated by a second drive until the pressing structure enters the clamping area from outside the clamping area. After removing the second drive and the first drive, the first end is elastically moved toward the inside of the main body, and the pressing structure elastically presses and positions the processing object on the support member placed in the clamping area.

2. The coating fixture according to claim 1, characterized in that: The frame includes two opposite side frames and an upper frame and a lower frame located between the two side frames. The four supporting members are arranged at the four inner corners of the frame. The four supporting structures located on the four supporting members form the clamping area on the front side within the frame. There are vacant areas between the clamping area and the upper frame and the lower frame respectively.

3. The coating fixture according to claim 2, characterized in that: The support structure includes a stepped support groove provided on the front side of the support member, the support groove is open toward the clamping area, the bottom surface of the support groove is used to pad a corner of the processing object, and the groove walls of each support groove surround the clamping area.

4. The coating fixture according to claim 3, characterized in that: The main body is arranged on the front side of the support member, and a pin groove is provided on the top of the main body. A step pin is provided on the first end to cooperate with the pin groove in movement and rotation. The pin groove has a bayonet at the top of the main body, and an elastic member is sleeved on the step pin. The two ends of the elastic member are restricted between the bayonet and the step surface of the step pin.

5. The coating fixture according to claim 4, characterized in that: A knob and a connecting rod are provided on the clamping member between the first end and the second end. The knob is located on the top outer side of the body. The bottom end of the knob is vertically connected to the step pin after passing through the bayonet. The top end of the knob is connected to the pressing structure through the turned connecting rod. The knob is used to be applied with the first drive and the second drive.

6. The coating fixture according to claim 5, characterized in that: A limit pin is provided on the top of the main body, and a limit groove is provided on the bottom side of the knob to cooperate with the limit pin. The knob is driven by the first drive to drive the step pin to elastically move away from the main body. After the limit groove is out of the limit pin, the knob is then driven by the second drive to drive the step pin to rotate relative to the main body. When the limit groove is engaged in the limit pin, the pressing structure is in the vacant area.

7. The coating fixture according to claim 5, characterized in that: The connecting rod has a first connecting rod section and a second connecting rod section connected to each other, the first connecting rod section is connected to the knob, the second connecting rod section is connected to the pressing structure, the first connecting rod section is parallel to the bottom surface of the support groove, and the second connecting rod section and the pin groove are perpendicular to the bottom surface of the support groove.

8. The coating fixture according to claim 7, characterized in that: The height of the groove wall of the support groove is greater than the thickness of the corner of the processing object. A positioning groove is provided on the front of the support member. The positioning groove is open on the groove wall of the support groove. When the pressing structure is pressed on the surface of the processing object, it is also partially located in the positioning groove to obtain positioning.

9. The coating fixture according to claim 8, characterized in that: The pressing structure includes a connected cylindrical pressing block and a positioning block, the pressing block is coaxially connected to the second connecting rod segment, the positioning block is parallel to the bottom surface of the support groove, the pressing block is used to press the processing object, and the positioning block is used to extend into the positioning groove to position the pressing structure.

10. The coating fixture according to claim 9, characterized in that: When there is a positioning hole on the corner of the processing object, a corresponding through hole is also provided on the bottom surface of the support groove, and a ball head is protruding from the end surface of the pressure block facing the processing object. The ball head is used to fall into the positioning hole and the through hole when the pressing structure rotates to the positioning hole and presses the processing object. The diameter of the pressure block is larger than the aperture of the positioning hole; and / or the elastic member includes a spring.

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