Automatic clamping device and method

Abstract

According to the automatic clamping device and method, four hooks are arranged on the upper side and the lower side of a coating clamp of the automatic clamping device, and the hook on at least one side can be driven by a driving mechanism to elastically move relative to the other side, so that the distance between every two opposite hooks is reduced; the driving force is removed after all the hooks are aligned with the hanging structure holes, so that the hooks which elastically move make elastic recovery movement, the distance between every two opposite hooks is increased, and the hanging structure holes are formed in the hooks. Therefore, the hanging structure hole is hooked until the processed object is tensioned on the coating clamp to realize automatic clamping, so that rhythm optimization and manpower simplification of the clamping process are realized, the process stability and the clamping efficiency are improved, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of coating processing, and in particular to an automatic clamping device and method. Background Art

[0002] As one of the main components of the proton exchange membrane fuel cell structure, the bipolar plate usually accounts for 80% of the weight and 45% of the cost of the fuel cell. Among them, compared with graphite and composite bipolar plates, metal bipolar plates have good mechanical strength, processing performance and conductivity. Especially considering the transportation scenario, metal bipolar plates are more resistant to mechanical shock and vibration caused by rupture and leakage of reaction gases. In addition, metal bipolar plates reduce manufacturing costs by virtue of their low cost advantage, thereby enhancing the competitiveness of metal bipolar plates in the fuel cell market.

[0003] However, metals are also susceptible to corrosion in acidic and humid environments. According to investigations, metal bipolar plates may dissolve when working in fuel cells with a pH value of 2 to 4 and a temperature of about 80°C. In addition, free metal ions may poison the membrane electrode assembly, resulting in a decrease in the power output of the fuel cell. In addition, the oxide layer formed during corrosion increases the resistivity of the metal bipolar plate. As the oxide layer grows further, the efficiency of the fuel cell will be greatly reduced.

[0004] The above problems can be effectively solved by coating the surface of the metal bipolar plate. However, when using the existing coating fixture to load and unload the metal bipolar plate, there are the following problems: (1) When using the existing coating fixture to load and unload the metal bipolar plate, it is a manual operation and the process stability is greatly affected by the personnel.

[0005] (2) The existing coating fixtures for metal bipolar plates have low clamping efficiency.

[0006] (3) The existing hook structure and installation design are single and cannot adapt well to the constantly changing hook angle of the metal bipolar plate during the installation process, which easily causes poor contact due to slight deformation of the hook.

[0007] Therefore, it is necessary to provide a new clamping technology to solve the above problems existing in the prior art. Summary of the invention

[0008] The purpose of the present invention is to overcome the above-mentioned defects in the prior art and to provide an automated clamping device and method.

[0009] To achieve the above object, the technical solution of the present invention is as follows: The present invention provides an automated clamping device, comprising: a coating fixture, a driving mechanism and a transmission mechanism; The coating fixture is vertically placed on the clamping station, and two hooks are respectively provided on the upper and lower sides of the coating fixture, and the hooks are arranged in pairs facing each other, and the hooks on at least one side are configured to be able to move elastically and elastically return relative to the other side; The driving mechanism is arranged on the clamping station, and is used to drive the hooks on at least one side to perform the elastic movement, so that the distance between the hooks facing each other is reduced, so as to be suitable for hanging the processing object with the hanging structure hole, and after each of the hooks is aligned with the hanging structure hole, the driving force is removed, so that the hooks that have undergone the elastic movement perform the elastic recovery movement, so that the distance between the hooks facing each other is increased, and the hanging structure hole is hooked until the processing object is tightened on the coating fixture; The conveying mechanism is used to convey the processing object to the clamping station, align the hanging structure hole with each hook, and release the processing object after the driving mechanism removes the driving force and each hook hooks the hanging structure hole.

[0010] Furthermore, the coating fixture includes a frame vertically placed on the clamping station, and two hanging mechanisms respectively arranged on the upper and lower sides of the frame, the hanging mechanism is provided with a positioning portion, the hook is arranged on the positioning portion, the driving mechanism is used to drive the positioning portion of at least one side of the hanging mechanism to perform the elastic movement, so that the distance between the two hooks facing each other is reduced, and after the driving force is removed, the positioning portion of the hanging mechanism that has undergone the elastic movement performs the elastic recovery movement, so that the distance between the two hooks facing each other is increased, and the processing object is tensioned on the frame.

[0011] Furthermore, the positioning portion of the hanging mechanism located on the upper side of the frame is configured to be capable of the elastic movement and the elastic recovery movement relative to the lower side, and the driving mechanism is used to drive the positioning portion of the hanging mechanism located on the upper side of the frame to perform the elastic movement.

[0012] Furthermore, the positioning part of the hanging mechanism located at the lower side of the frame is a first positioning part, and the positioning part of the hanging mechanism located at the upper side of the frame is a second positioning part, the first positioning part and the second positioning part are parallel to the horizontal direction, the first positioning part is fixed on the frame, and the hanging mechanism located at the upper side of the frame is provided with an elastic mechanism, the elastic mechanism is provided on the frame, the second positioning part is movably provided on the elastic mechanism, the elastic mechanism is provided with a first elastic telescopic part, the second positioning part conflicts with the first elastic telescopic part, and each of the hooks is provided in pairs on the first positioning part and the second positioning part, and the driving mechanism is used to drive the second positioning part to make the elastic movement close to the first positioning part and force the first elastic telescopic part to contract. After the driving force is removed, the first elastic telescopic part stretches, driving the second positioning part to make the elastic recovery movement away from the first positioning part.

[0013] Furthermore, the frame is rectangular, including two opposite side frames and an upper frame and a lower frame located between the two side frames. There are two elastic mechanisms, and the two elastic mechanisms are respectively arranged on the two side frames. The elastic mechanism is vertically provided with a guide column, and the upper end of the guide column is movable through the second positioning portion and then connected to the upper frame. The lower end of the guide column is provided with a first cap portion, and the first elastic telescopic portion is sleeved on the guide column between the second positioning portion and the first cap portion.

[0014] Furthermore, the lower frame serves as the first positioning portion.

[0015] Furthermore, the positioning portion of the hanging mechanism located on the upper side of the frame is configured to be able to perform the elastic movement and the elastic recovery movement relative to the lower side, and the driving mechanism is used to drive the positioning portion of the hanging mechanism located on the upper side of the frame to perform the elastic movement, and the positioning portion of the hanging mechanism located on the lower side of the frame is also configured to be able to perform the elastic movement and the elastic recovery movement relative to the upper side, and the driving mechanism is also used to drive the positioning portion of the hanging mechanism located on the lower side of the frame to perform the elastic movement.

[0016] Furthermore, each of the hanging mechanisms includes two sub-hanging mechanisms, and the four sub-hanging mechanisms are arranged in pairs on two upper and lower opposite frame frames of the frame. Each of the sub-hanging mechanisms is provided with a first elastic telescopic part and a positioning part. The positioning part is movably arranged on the corresponding frame, and the first elastic telescopic part is limited between the corresponding frame and the positioning part. The hooks are arranged in pairs on each positioning part facing each other. When the four positioning parts are driven by the driving mechanism respectively, each of them makes the elastic movement away from the corresponding frame and forces the corresponding first elastic telescopic part to contract. After the driving force is removed, each of the first elastic telescopic parts stretches, driving the corresponding positioning part to make the elastic recovery movement close to the corresponding frame.

[0017] Furthermore, the positioning portion includes a connected main body and a guide column, the main body is located on the inner side of the frame, the hook is arranged on the main body, the guide column passes through the frame from the corresponding frame, a first cap portion is provided on the protruding end of the guide column, and the first elastic telescopic portion is elastically sleeved on the guide column between the corresponding frame and the first cap portion.

[0018] Further, the hook includes a cylindrical pin and a hook head, a second cap portion is provided on the first end of the cylindrical pin, the hook head is connected to the second cap portion, a pin shaft is provided on the second end of the cylindrical pin that crosses the cylindrical pin, and two ends of the pin shaft are exposed and protrude from the side of the cylindrical pin, a gasket is provided on the cylindrical pin upper movable sleeve between the second cap portion and the pin shaft, and a second elastic telescopic portion is provided on the cylindrical pin upper movable sleeve between the gasket and the second cap portion; a mounting hole for the second end of the cylindrical pin to pass through is provided on the positioning portion, the mounting hole has a center hole and two avoidance holes connected to the first direction side of the center hole, the center hole is used for the elastic passing of the second end of the cylindrical pin, the two avoidance holes correspond to the passing of the protruding two ends of the pin shaft, and two recessed grooves connected to the second direction side of the center hole are also provided on the surface of the positioning portion located on the passing-out side of the cylindrical pin, the two recessed grooves correspond to the position restriction of the protruding two ends of the pin shaft that pass through the mounting hole and elastically fall into it after rotating the cylindrical pin.

[0019] Furthermore, the hook head is fastened to the second cap portion through a connecting rod, a groove is provided on the top surface of the second cap portion, a screw hole is provided on the bottom surface of the groove, the groove has a lateral opening on the top side surface of the second cap portion, the fastening end of the connecting rod is bent into an annular portion, and the annular portion is placed in the groove so that the rod body of the connecting rod is restricted by the lateral opening of the groove, and the annular portion is tightened by passing the screw through the annular hole of the annular portion and then screwing the screw into the screw hole, thereby fastening the connecting rod and the hook head connected thereto to the cylindrical pin.

[0020] Furthermore, the hook head is in the shape of a scimitar with multiple inflection points, and the inner blade surface of the scimitar is used as the hanging surface.

[0021] Furthermore, a rotating shaft is provided in the middle of two upper and lower opposite frames of the frame, and the rotating shaft serves as a rotation axis of the frame. The frame is vertically matched and positioned on the clamping station through the rotating shaft.

[0022] Furthermore, a plurality of the mounting holes are arranged in sequence along the horizontal direction on both sides of the rotating shaft, and each mounting hole on each side is used for the selective installation of one of the hooks.

[0023] The present invention also provides an automated clamping method, using the automated clamping device described above, comprising: Place the coating fixture vertically on the clamping station; The driving mechanism is started to drive the hooks on at least one side to move elastically, so that the distance between the hooks facing each other is reduced to be suitable for hanging the processing object with the hanging structure hole; The processing object is conveyed to the clamping station by a conveying mechanism, and the hanging structure hole is aligned with each of the hooks; Removing the driving force, so that the hooks that have undergone the elastic movement make elastic recovery movement, so that the distance between the hooks facing each other increases, and the hanging structure holes are hooked until the processing object is tightened on the coating fixture to complete the clamping; Wherein, when each of the hooks hooks the hanging structure hole, the conveying mechanism releases the processing object.

[0024] Further, the driving mechanism drives the two hooks on the upper side to synchronously perform the elastic movement, and keeps the two hooks on the lower side in a fixed state; or, drives the two hooks on the lower side to synchronously perform the elastic movement, and keeps the two hooks on the upper side in a fixed state; or, drives the two hooks on the upper side to synchronously perform the elastic movement, and also drives the two hooks on the lower side to synchronously perform the elastic movement; or, drives the four hooks separately to perform the elastic movement.

[0025] Furthermore, when the processing object is transmitted to the clamping station, the processing object is moved by the transmission mechanism so that the hanging structure holes are aligned with each of the hooks; when the two hooks located on the lower side are in a fixed state, the relative position of the processing object is adjusted by moving the transmission mechanism upward, so that the two hooks on the lower side first hook the hanging structure holes, and then the driving force of the driving mechanism is removed, so that the two hooks on the upper side also hook the hanging structure holes through the elastic recovery movement; or, when the two hooks on the upper side are in a fixed state, the relative position of the processing object is adjusted by moving the transmission mechanism downward, so that the two hooks on the upper side first hook the hanging structure holes, and then the driving force of the driving mechanism is removed, so that the two hooks on the lower side also hook the hanging structure holes through the elastic recovery movement.

[0026] Furthermore, when the two hooks on any one side are driven to perform the elastic movement, the two hooks are moved to positions to be hung on the same horizontal plane.

[0027] Furthermore, when the driving force is removed, the driving mechanism gradually removes the applied driving force, so that the hooks that have elastically moved gradually make elastic recovery movements, so that the distance between the hooks facing each other gradually increases, so as to gradually hook the hanging structure holes, and after the driving force is completely removed, the hooks facing each other completely tighten the processing object on the coating fixture.

[0028] It can be seen from the above technical scheme that the present invention sets four hooks on the upper and lower sides of the coating fixture of the automatic clamping device, and can drive the hook on at least one side to move elastically relative to the other side through the driving mechanism, so that the distance between the hooks facing each other is reduced, so as to be suitable for the processing object with the hanging structure hole transmitted by the hanging transmission mechanism, and remove the driving force after each hook is aligned with the hanging structure hole, so that the hook that has moved elastically moves elastically, so that the distance between the hooks facing each other is increased, so that the hanging structure hole is hooked until the processing object is tightened on the coating fixture to realize automatic clamping. The present invention has the following advantages: (1) By combining the coating fixture with the drive mechanism and the transmission mechanism, the positioning, clamping and loosening operations of the processing object can be automatically and quickly completed during clamping, reducing manual participation, thereby optimizing the clamping process rhythm and streamlining manpower, improving process stability and clamping efficiency, and thereby improving production efficiency.

[0029] (2) By enabling the hook on at least one side to move elastically relative to the other side, when each hook hooks the processing object, the hook position and angle can be adaptively adjusted to compensate for slight deformation of the hook, thereby eliminating the hidden danger of poor contact between the hook and the processing object.

[0030] (3) The detachable split design of the hook can avoid interference with surrounding structures during loading and unloading, and only the hook head can be replaced after the life of the hook head expires, thereby greatly reducing the replacement cost of the hook.

[0031] (4) By designing the hook head of the hook to be a scimitar shape with a narrow hooking surface, the hidden danger of insufficient strength when the hook is too thin is solved, and the risk of coating shielding when the hook is too thick is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1-Figure 3 The figure is a schematic structural diagram of an automatic clamping device according to a preferred embodiment of the present invention.

[0033] Figure 4 The figure is a schematic structural diagram of an elastic mechanism according to a preferred embodiment of the present invention.

[0034] Figure 5 The figure is a schematic structural diagram of an automatic clamping device according to a preferred embodiment of the present invention.

[0035] Figure 6-Figure 7 The figure is a schematic diagram of the installation structure of a sub-hanging mechanism according to a preferred embodiment of the present invention.

[0036] Figure 8-Figure 9 The figure is a schematic structural diagram of a hook according to a preferred embodiment of the present invention.

[0037] Figure 10-12 The figure is a schematic diagram of the installation state of a hook according to a preferred embodiment of the present invention.

[0038] Figure 13-14 The figure is a schematic diagram of the installation process of a hook according to a preferred embodiment of the present invention.

[0039] Figure 15-16 The figure is a schematic diagram of a clamping process according to a preferred embodiment of the present invention.

[0040] Fig.17 One use of the present invention Fig. 9 The hook and Figure 8 Schematic diagram of the comparison of the hooking effect when the hook is hooked, in which (a) is Figure 8 The hook (b) is Fig. 9 hook. DETAILED DESCRIPTION

[0041] 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 of the present invention, all other embodiments obtained by ordinary technicians in this field without 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 understood by people with general skills in the field to which the present invention belongs. "Including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0042] In view of the deficiencies in the prior art, the present invention provides an automatic clamping device and method.

[0043] An automatic clamping device of the present invention comprises: a coating fixture, a driving mechanism and a transmission mechanism; The coating fixture is vertically placed on the clamping station, and two hooks are respectively provided on the upper and lower sides of the coating fixture, and the hooks are arranged in pairs facing each other, and the hooks on at least one side are configured to be able to move elastically and elastically return relative to the other side; The driving mechanism is arranged on the clamping station, and is used to drive the hooks on at least one side to perform the elastic movement, so that the distance between the hooks facing each other is reduced, so as to be suitable for hanging the processing object with the hanging structure hole, and after each of the hooks is aligned with the hanging structure hole, the driving force is removed, so that the hooks that have undergone the elastic movement perform the elastic recovery movement, so that the distance between the hooks facing each other is increased, and the hanging structure hole is hooked until the processing object is tightened on the coating fixture; The conveying mechanism is used to convey the processing object to the clamping station, align the hanging structure hole with each hook, and release the processing object after the driving mechanism removes the driving force and each hook hooks the hanging structure hole.

[0044] An automated clamping method using the automated clamping device of the present invention comprises: Place the coating fixture vertically on the clamping station; The driving mechanism is started to drive the hooks on at least one side to move elastically, so that the distance between the hooks facing each other is reduced to be suitable for hanging the processing object with the hanging structure hole; The processing object is conveyed to the clamping station by a conveying mechanism, and the hanging structure hole is aligned with each of the hooks; Removing the driving force, so that the hooks that have undergone the elastic movement make elastic recovery movement, so that the distance between the hooks facing each other increases, and the hanging structure holes are hooked until the processing object is tightened on the coating fixture to complete the clamping; Wherein, when each of the hooks hooks the hanging structure hole, the conveying mechanism releases the processing object.

[0045] The present invention sets four hooks on the upper and lower sides of the coating fixture of the automatic clamping device, and can drive the hook on at least one side to move elastically relative to the other side through a driving mechanism, so that the distance between the hooks facing each other is reduced, so as to be suitable for the processing object with the hanging structure hole transmitted by the hanging transmission mechanism, and remove the driving force after each hook is aligned with the hanging structure hole, so that the hook that has moved elastically moves elastically to move back, so that the distance between the hooks facing each other is increased, so as to hook the hanging structure hole until the processing object is tightened on the coating fixture to realize automatic clamping. The present invention can automatically and quickly complete the positioning, clamping and releasing operations of the processing object when clamping by cooperating the coating fixture with the driving mechanism and the transmission mechanism, reducing manual participation, thereby realizing the beat optimization of the clamping process, streamlining of manpower, improving process stability and clamping efficiency, and thereby improving production efficiency.

[0046] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0047] refer to Figure 1-Figure 4 An automatic clamping device of the present invention comprises a coating fixture 1, a driving mechanism and a conveying mechanism (the driving mechanism and the conveying mechanism are not shown).

[0048] The coating fixture 1 includes a frame 10 vertically placed on a clamping station (not shown), and two hanging mechanisms disposed on the upper and lower sides of the frame 10. Each hanging mechanism is provided with a positioning portion 13, and each positioning portion 13 is provided with two hooks 11, and the four hooks 11 are disposed on the two positioning portions 13 in pairs facing each other.

[0049] It should be noted that the coating fixture 1 has a clamping working surface and a clamping back surface. Figure 1 The side of the middle frame 10 facing the drawing (front side of the frame 10) is clamped on the back side. Figure 1 The side of the middle frame 10 facing away from the drawing (the back side of the frame 10). Alternatively, the clamping working surface is Figure 2 The side of the middle frame 10 facing away from the drawing is clamped on the back side. Figure 2 The middle frame 10 faces the drawing. Figure 1 The front state of the frame 10 of the coating fixture 1 is shown. Figure 2 Shows Figure 1The back side state of the frame 10 of the coating fixture 1, that is, Figure 1 and Figure 2 The clamping working surface and clamping back surface states of the coating fixture 1 at the clamping station are shown respectively; Figure 3 It shows Figure 1 The side state of the frame 10 of the coating fixture 1.

[0050] In some embodiments, the driving mechanism is used to drive the positioning part of the hanging mechanism on at least one side to move elastically, so that the distance between the hooks facing each other is reduced. After the driving force applied by the driving mechanism is removed, the positioning part of the hanging mechanism that has moved elastically moves elastically, so that the distance between the hooks facing each other is increased, thereby tightening the processing object on the frame.

[0051] The following description will be made by taking as an example that the positioning portion 13 of the hanging mechanism located on the upper side of the frame 10 is configured to be able to perform elastic movement and elastic recovery movement relative to the lower side, and the driving mechanism is used to drive the positioning portion 13 of the hanging mechanism located on the upper side of the frame 10 to perform elastic movement. However, it can be understood that the positioning portion of the hanging mechanism located on the lower side of the frame can also be configured to be able to perform elastic movement and elastic recovery movement relative to the upper side, and the driving mechanism is used to drive the positioning portion of the hanging mechanism located on the lower side of the frame to perform elastic movement.

[0052] For the sake of distinction, the positioning portion 13 of the hanging mechanism located at the lower side of the frame 10 is defined as the first positioning portion 131, and the positioning portion 13 of the hanging mechanism located at the upper side of the frame 10 is defined as the second positioning portion 132. Correspondingly, the hook 11 provided on the second positioning portion 132 is the hook 11 located at the upper side, and the hook 11 provided on the first positioning portion 131 is the hook 11 located at the lower side.

[0053] The first positioning portion 131 and the second positioning portion 132 are parallel to the horizontal direction. In addition, the first positioning portion 131 is fixedly arranged on the frame 10. The hanging mechanism located on the upper side of the frame 10 is provided with an elastic mechanism 14, the elastic mechanism 14 is arranged on the frame 10, and the second positioning portion 132 is movably arranged on the elastic mechanism 14, that is, the second positioning portion 132 is movably arranged on the frame 10. Preferably, the elastic mechanism 1411 is arranged on the reverse side (the clamping back side) of the frame 10 to avoid interference with the clamping.

[0054] The elastic mechanism 14 has a first elastic expansion portion 141, and the second positioning portion 132 is disposed in contact with the first elastic expansion portion 141. Figure 4 shown.

[0055] The hook 11 is used to hang the processing object. The processing object includes a plate-shaped processing object with a hanging structural hole, but is not limited thereto. For example, the processing object includes a metal bipolar plate of a fuel cell, and the metal bipolar plate has a structural hole on its surface. The structural hole can be used to hang the metal bipolar plate through the four hooks 11. That is, the structural hole is used as the hanging structural hole when hanging and clamping the metal bipolar plate.

[0056] Fig.15 and Fig.16 An example of a metal bipolar plate 20 is shown. The metal bipolar plate 20 has a plurality of structural holes on its surface, wherein the two structural holes located at the top and the two structural holes located at the bottom can be used as mounting structural holes 201 for mounting with the four hooks 11. However, the present invention is not limited thereto.

[0057] In order to facilitate the clear expression of the present invention, the following Fig.15 or Fig.16 Taking a metal bipolar plate 20 shown in the figure as an example of a processing object, and taking the coating fixture 1 (frame 10) being in a vertical state and vertically hanging and clamping the metal bipolar plate 20 as an example, the specific implementation mode of the present invention is described in detail.

[0058] The four hooks 11 are arranged in pairs on the first positioning portion 131 and the second positioning portion 132, and the hanging end (hook head) of the upper hook 11 and the hanging end (hook head) of the lower hook 11 are arranged facing each other, so as to facilitate the hanging of the upper edge of the upper hanging structure hole 201 and the lower edge of the lower hanging structure hole 201 of the metal bipolar plate 20 respectively.

[0059] The driving mechanism is used to drive the second positioning portion 132 to elastically move closer to the first positioning portion 131 and force the first elastic telescopic portion 141 to contract; after the driving force is removed, the first elastic telescopic portion 141 stretches, driving the second positioning portion 132 to elastically return away from the first positioning portion 131.

[0060] Since the second positioning portion 132 is movably disposed on the elastic mechanism 14, when the second positioning portion 132 is driven by the driving force applied by the driving mechanism, for example, Figure 1 is driven from top to bottom (cf. Fig.15When driven by the second positioning portion 132 (in the direction indicated by the hollow arrow in (b)), it can move downward relative to the frame 10, that is, it can move close to the first positioning portion 131. At the same time, since the second positioning portion 132 is arranged to conflict with the first elastic telescopic portion 141, when the second positioning portion 132 moves downward, it will exert downward pressure on the first elastic telescopic portion 141 and overcome the reverse elastic force of the first elastic telescopic portion 141, forcing the first elastic telescopic portion 141 to elastically contract, so that the upper hook 11 moves downward elastically, and the distance between the upper hook 11 and the lower hook 11 is reduced to the waiting position, so as to achieve the purpose of making the distance between the upper hook 11 and the lower hook 11 suitable for alignment with the hanging structure hole 201 on the metal bipolar plate 20 for hanging.

[0061] On the contrary, when the driving force applied by the driving mechanism to the second positioning portion 132 is removed, the first elastic telescopic portion 141 will overcome the gravity of the second positioning portion 132 and produce reverse elastic recovery and extension, so that the second positioning portion 132 can be lifted up and the second positioning portion 132 can be driven to make an elastic recovery movement away from the first positioning portion 131, so that the distance between the upper hook 11 and the lower hook 11 is increased for hanging, and the purpose of elastically tensioning the metal bipolar plate 20 on the hanging area within the frame 10 after the upper hook 11 and the lower hook 11 are hung is achieved.

[0062] The conveying mechanism is used to convey the metal bipolar plate 20 to the clamping station so that the hanging structure hole 201 on the metal bipolar plate 20 is aligned with each hook 11. And, when the driving mechanism removes the driving force so that each hook 11 hooks the hanging structure hole 201, the conveying mechanism releases the metal bipolar plate 20. The second positioning portion 132 continues to move upward, and the metal bipolar plate 20 is gradually hooked and tightened under the pull of the four hooks 11, thereby realizing automatic clamping.

[0063] In some embodiments, the frame 10 is in a frame shape corresponding to the shape of the metal bipolar plate 20. Taking the metal bipolar plate 20 as a rectangular shape, the frame 10 is a rectangular frame 10. The rectangular frame 10 includes two vertically opposite side frames 101 and an upper frame 102 and a lower frame 103 that are respectively located between the upper and lower ends of the two side frames 101 and are horizontally opposite to each other. Figure 1 shown.

[0064] In some embodiments, two elastic mechanisms 14 are provided. Furthermore, the two elastic mechanisms 14 are provided on two side frames 101 and are provided close to the upper frame 102 to ensure the effective clamping height of the metal bipolar plate 20 .

[0065] refer to Figure 3 and Figure 4In some embodiments, each elastic mechanism 14 is provided with a guide column 142 arranged in the same direction as the side frame 101, and a first elastic telescopic portion 141. The upper end of the guide column 142 is movable through the through hole provided on the second positioning portion 132, and is connected to the upper frame 102; the lower end of the guide column 142 is provided with a first cap portion 144, and the diameter of the first cap portion 144 is larger than the diameter of the guide column 142. The first elastic telescopic portion 141 is sleeved on the guide column 142 between the second positioning portion 132 and the first cap portion 144, and elastically contacts the second positioning portion 132 and the first cap portion 144. When the second positioning portion 132 is driven by a driving force from top to bottom, it will move downward along the guide column 142 and apply a squeezing force to the upper end of the first elastic telescopic portion 141, while the lower end of the first elastic telescopic portion 141 is restricted by the first cap portion 144, so that the first elastic telescopic portion 141 can be forced to elastically contract as the distance between the second positioning portion 132 and the first cap portion 144 gradually decreases. When the driving force applied to the second positioning portion 132 is removed, the reverse elastic recovery and stretching generated by the first elastic telescopic portion 141 is used to lift the second positioning portion 132, so that the second positioning portion 132 moves upward along the guide column 142 to reset. Figure 3 The second positioning portion 132 is shown in the state where it is moved downward to the ready-to-hang position after being pressed (the guide post 142 exposed between the second positioning portion 132 and the upper frame 102 can be seen). Figure 4 The second positioning portion 132 is shown in a state where it is elastically lifted up by the first elastic and retractable portion 141 and then moved upward to the initial position (reset).

[0066] In some embodiments, the upper end of the guide post 142 is connected to the bottom surface of the upper frame 102 by a threaded connection, and is vertically installed on the bottom surface of the upper frame 102 to facilitate the disassembly and assembly of the elastic mechanism 14 .

[0067] In some embodiments, the first elastic retractable portion 141 includes a spring.

[0068] In some embodiments, the outer cover of the first elastic telescopic portion 141 is provided with a protective cover 143 to prevent sand used in the maintenance process of the coating fixture 1 from hitting the first elastic telescopic portion 141 and affecting its life. The upper end of the protective cover 143 is fixedly connected (for example, welded) to the bottom surface of the second positioning portion 132, and the lower end of the protective cover 143 surrounds at least part of the first cap portion 144.

[0069] In some embodiments, a through hole is provided on the lower end of the protective cover 143 to facilitate the discharge of foreign matter such as sand that enters the protective cover 143. The first cap portion 144 can be inserted into the through hole on the lower end of the protective cover 143, and the diameter of the through hole needs to be significantly larger than the diameter of the first cap portion 144 to facilitate the discharge of foreign matter such as sand that enters the protective cover 143.

[0070] In some embodiments, the first positioning portion is disposed on the lower frame.

[0071] In some embodiments, the lower frame 103 also serves as the first positioning portion 131. Figure 1 shown.

[0072] In some embodiments, the second positioning portion 132 includes a positioning rod. The positioning rod is movably disposed on the guide posts 142 of the two elastic mechanisms 14 through two ends.

[0073] In some embodiments, the positioning portion of the hanging mechanism located on the upper side of the coating fixture frame is configured to be able to perform elastic movement and elastic recovery movement relative to the lower side, and the driving mechanism is used to drive the positioning portion of the hanging mechanism located on the upper side of the frame to perform elastic movement, and the positioning portion of the hanging mechanism located on the lower side of the frame is also configured to be able to perform elastic movement and elastic recovery movement relative to the upper side, and the driving mechanism is also used to drive the positioning portion of the hanging mechanism located on the lower side of the frame to perform elastic movement. The driving mechanism can drive the two hooks located on the upper side to perform elastic movement synchronously, and can drive the two hooks located on the lower side to perform elastic movement synchronously. Alternatively, the driving mechanism can drive the four hooks to perform elastic movement separately.

[0074] The following is an example in which the driving mechanism can drive four hooks to move elastically respectively.

[0075] refer to Figure 5-Figure 7 An automatic clamping device of the present invention comprises a coating fixture 1, a driving mechanism and a conveying mechanism (the driving mechanism and the conveying mechanism are not shown).

[0076] The coating fixture 1 includes a frame 10 vertically placed on a clamping station (not shown), and two hanging mechanisms respectively arranged on the upper and lower sides of the frame 10 . Figure 5 The front state of the frame 10 is shown, that is, the clamping working surface state of the coating fixture 1 is shown. The coating fixture 1 is used to clamp, for example, a metal bipolar plate 20 that needs to be coated through the clamping working surface.

[0077] Each hanging mechanism includes two sub-hanging mechanisms, and the four sub-hanging mechanisms are arranged on two upper and lower opposite frames of the frame 10 in pairs.

[0078] The frame 10 is provided with an upper frame 102 and a lower frame 103; the upper frame 102 and the lower frame 103 are located on the upper and lower sides of the frame 10 in an upward and downward manner. Two of the four sub-hanging mechanisms are provided on the upper frame 102 and are arranged on the left and right ends of the upper frame 102; the other two of the four sub-hanging mechanisms are provided on the lower frame 103 and are arranged on the left and right ends of the lower frame 103. Thus, the four sub-hanging mechanisms are provided on the upper and lower sides of the frame 10 in a manner of being arranged in pairs in an upward and downward manner. Figure 6Two sub-hanging mechanisms are shown on the upper frame 102. Figure 7 The other two sub-hanging mechanisms disposed on the lower frame 103 are shown. The sub-hanging mechanism located at the left end of the upper frame 102 and the sub-hanging mechanism located at the left end of the lower frame 103 are disposed opposite to each other in pairs; the sub-hanging mechanism located at the right end of the upper frame 102 and the sub-hanging mechanism located at the right end of the lower frame 103 are disposed opposite to each other in pairs.

[0079] Each sub-hanging mechanism includes a positioning portion 13, a hook 11 ( Figure 6 and Figure 7 Only the partial structure of the hook 11 is shown in the figure) and the first elastic retractable portion 141. Among them, the positioning portion 13 is movably arranged on the corresponding frame, and the first elastic retractable portion 141 is limited between the corresponding frame and the positioning portion 13. For example, the positioning portion 13 of a sub-hanging mechanism located on the left end of the upper frame 102 is arranged to pass through the upper frame 102, and forms a movable fit with the upper frame 102. One end of the first elastic retractable portion 141 is limited by the protruding end of the positioning portion 13 (the positioning portion 13 passes through the upper end of the upper frame 102), and the other end of the first elastic retractable portion 141 is limited by the upper frame 102, so that the first elastic retractable portion 141 is limited between the upper frame 102 and the positioning portion 13. Please refer to the above description to understand the arrangement of the other three sub-hanging mechanisms on the corresponding frames.

[0080] The hooks 11 are arranged on the positioning part 13. In addition, the hooks 11 corresponding to the four sub-hanging mechanisms are arranged in pairs facing each other. That is, the hooking ends (hook heads) of the hooks 11 on the four sub-hanging mechanisms are arranged in pairs facing each other. The four hooks 11 are used to hang the upper edges of the two hanging structure holes 201 located on the upper part of the metal bipolar plate 20 and the lower edges of the two hanging structure holes 201 located on the lower part, so as to hang and clamp the metal bipolar plate 20.

[0081] Taking the example that each sub-hanging mechanism is provided with a positioning portion 13 and a hook 11, the hanging ends (hooks) of the four hooks 11 are arranged in pairs facing each other. That is, a hook 11 on the sub-hanging mechanism located at the left end of the upper frame 102 is arranged facing each other up and down with a hook 11 on the sub-hanging mechanism located at the left end of the lower frame 103; a hook 11 on the sub-hanging mechanism located at the right end of the upper frame 102 is arranged facing each other up and down with a hook 11 on the sub-hanging mechanism located at the right end of the lower frame 103. This arrangement makes it easy for the four hooks 11 to hang the upper edge of the upper hanging structure hole 201 and the lower edge of the lower hanging structure hole 201 of the metal bipolar plate 20, respectively.

[0082] Since the positioning parts 13 are movably arranged on the corresponding frame, when the positioning parts 13 on the four sub-hanging mechanisms are driven by the driving force applied by the driving mechanism, they can each move away from the corresponding frame. Figure 5 In the embodiment, the two positioning parts 13 on the upper frame 102 are respectively subjected to a driving force from top to bottom (refer to Fig.16 (b) when driven by the hollow arrow pointing downward), each of them can move downward away from the upper frame 102; the two positioning parts 13 located on the lower frame 103 are respectively driven from bottom to top (refer to Fig.16 When driven by the hollow arrow pointing upward in (b), each of them can move upward away from the lower frame 103.

[0083] At the same time, since the first elastic expansion part 141 is restricted between the corresponding frame and the positioning part 13, when each positioning part 13 moves away from the frame on the corresponding side, pressure is applied to the first elastic expansion part 141 and the reverse elastic force of the first elastic expansion part 141 is overcome, forcing the corresponding first elastic expansion part 141 to produce elastic contraction. Therefore, after each positioning part 13 elastically moves relative to each other in pairs, the distance between the upper and lower hooks 11 facing each other is reduced to the position to be hung, so as to achieve the purpose of making the distance between the hooks 11 facing each other suitable for hanging with the hanging structure hole 201 on the metal bipolar plate 20.

[0084] On the contrary, when the driving force applied by the driving mechanism to each positioning part 13 is removed, each first elastic telescopic part 141 will elastically stretch under the action of its own elastic recovery, and produce a pulling effect on each positioning part 13, so that the corresponding positioning part 13 can be driven to make a reverse elastic recovery movement close to the corresponding frame, so that the distance between the two facing hooks 11 is increased for hanging, and the purpose of elastically tensioning the metal bipolar plate 20 on the hanging area within the frame 10 is achieved after the four hooks 11 are hung on the metal bipolar plate 20.

[0085] The conveying mechanism is used to convey the metal bipolar plate 20 to the clamping station so that the hanging structure hole 201 on the metal bipolar plate 20 is aligned with each hook 11. And, when the driving mechanism removes the driving force so that each hook 11 hooks the hanging structure hole 201, the conveying mechanism releases the metal bipolar plate 20. The distance between the four positioning parts 13 continues to increase, and the metal bipolar plate 20 is gradually hooked and tensioned under the pull of the four hooks 11, thereby realizing automatic clamping.

[0086] In some embodiments, the frame 10 adopts a frame shape corresponding to the shape of the metal bipolar plate 20. Taking the metal bipolar plate 20 as a rectangular shape as an example, the frame 10 adopts a rectangular frame 10. The rectangular frame 10 includes two vertically opposite side frames 101, and an upper frame 102 and a lower frame 103 respectively located between the upper and lower ends of the two side frames 101 and horizontally opposite to each other. The four sub-hanging mechanisms are respectively arranged at the four inner corners of the rectangular frame 10, and are arranged opposite to each other in pairs, such as Figure 5 shown.

[0087] refer to Figure 6-Figure 7 , which shows Figure 5 A magnified structure of the neutron mounting mechanism. In some embodiments, each positioning portion 13 includes a connected body 133 and a guide post 142. The body 133 is located on the inner side of the frame 10 and is arranged parallel to the upper frame 102 (lower frame 103), and the hook 11 is installed on the body 133. The guide post 142 is vertically connected to the body 133 and passes through the frame 10 from the corresponding upper frame 102 or lower frame 103. For example, the guide post 142 on the positioning portion 13 near the upper frame 102 passes through the frame 10 vertically from the inner side of the upper frame 102, and the guide post 142 on the positioning portion 13 near the lower frame 103 passes through the frame 10 vertically from the inner side of the lower frame 103. The upper frame 102 and the lower frame 103 are provided with through holes for the corresponding guide posts 142 to pass through.

[0088] In some embodiments, a threaded connection hole is provided on the main body 133, and a corresponding thread is provided on the connecting end of the guide column 142. By screwing the connecting end of the guide column 142 into the threaded connection hole on the main body 133, the guide column 142 is vertically fastened to the main body 133 to form a positioning portion 13.

[0089] In some other embodiments, the main body and the guide pillar are integrally processed to form the positioning portion.

[0090] In some embodiments, the protruding end of the guide post 142 away from the connection end is a free end, and a first cap portion 144 (i.e., a nut) protruding laterally is provided on the protruding end of the guide post 142, and the first elastic telescopic portion 141 is elastically sleeved on the guide post 142 between the corresponding frame and the first cap portion 144. For example, the first elastic telescopic portion 141 sleeved on the guide post 142 passing through the upper frame 102 is elastically restricted between the first cap portion 144 at the protruding end of the guide post 142 and the outer side (upper side) of the upper frame 102, and the first elastic telescopic portion 141 sleeved on the guide post 142 passing through the lower frame 103 is elastically restricted between the first cap portion 144 at the protruding end of the guide post 142 and the outer side (lower side) of the lower frame 103. The frame 10 is in a relatively fixed state. When the driving mechanism drives the positioning portion 13 (main body 133) near the upper frame 102 downward from the top, the main body 133 of the positioning portion 13 and the hook 11 installed thereon will descend, and the guide column 142 of the positioning portion 13 will follow the decline, so that the first elastic telescopic portion 141 sleeved on the guide column 142 will shrink; after the driving mechanism removes the downward driving force, the first elastic telescopic portion 141 will elastically stretch upward, which will lift the guide column 142, so that the main body 133 and the hook 11 installed thereon will follow the rise. Similarly, when the driving mechanism drives the positioning part 13 near the lower frame 103 upward from the bottom, the body 133 of the positioning part 13 and the hook 11 installed thereon will rise, and the guide post 142 of the positioning part 13 will rise accordingly, so that the first elastic telescopic part 141 sleeved on the guide post 142 will shrink; after the driving mechanism removes the upward driving force, the first elastic telescopic part 141 will elastically stretch downward, and will pull the guide post 142 down, so that the body 133 and the hook 11 installed thereon will follow and fall. In this way, the driving mechanism can apply a driving force so that the four hooks 11 are close to each other as needed, and remove the applied driving force so that the four hooks 11 return to their positions away from each other.

[0091] In some embodiments, the body 133 is in the shape of a strip and is arranged parallel to the corresponding upper frame 102 or lower frame 103. A guide post 142 is vertically arranged on both ends of the strip of the body 133, each guide post 142 vertically passes through the frame 10 from the corresponding frame, and a first elastic telescopic portion 141 is elastically sleeved on each guide post 142, and each first elastic telescopic portion 141 is restricted between the first cap portion 144 of the corresponding guide post 142 and the outer side of the frame on the corresponding side. In this way, the positioning portion 13 can maintain balance and move smoothly when moving up and down, and can prevent the positioning portion 13 from rotating, thereby ensuring the consistency of the hanging position of the hook 11.

[0092] In some embodiments, the first elastic retractable portion 141 includes a spring.

[0093] In some embodiments, the outer cover of the first elastic telescopic portion 141 is provided with a protective cover 143, which is used to protect the first elastic telescopic portion 141 during operation and prevent sand used in the maintenance process of the coating fixture 1 from hitting the first elastic telescopic portion 141 and affecting its life. The first end of the protective cover 143 is fixedly connected to the frame of the corresponding side (for example, welded), and the second end of the protective cover 143 surrounds at least part of the first cap portion 144. For example, the first cap portion 144 is partially located in the protective cover 143, and the top surface of the first cap portion 144 is exposed from the protective cover 143, such as Figure 6 shown. Figure 6 Four protective covers 143 connected to the upper frame 102 are shown, wherein the first protective cover 143 and the third protective cover 143 from left to right are displayed in a half-cut manner. Figure 7 Four protective covers 143 connected to the lower frame 103 are shown, and all are displayed in a half-cut manner.

[0094] In some embodiments, a through hole is provided on the second end of the protective cover 143 to facilitate the discharge of foreign matter such as sand that enters the protective cover 143. The first cap portion 144 can be inserted into the through hole on the second end of the protective cover 143 and can be exposed from the through hole. The diameter of the through hole needs to be significantly larger than the diameter of the first cap portion 144 to facilitate the discharge of foreign matter such as sand that enters the protective cover 143.

[0095] In some embodiments, a flat groove 145 is provided on the top surface of the first cap portion 144. Figure 6 and Figure 7 When installing the positioning part 13, the protective cover 143 can be welded around the through hole of the upper frame 102 or the lower frame 103 first, and then the connecting end of the guide column 142 with the spring (the first elastic telescopic part 141) is passed through the through hole of the upper frame 102 or the lower frame 103 and aligned with the threaded connection hole on the body 133. Then, a flat-blade wrench can be used to cooperate with the flat groove 145 on the guide column 142 to screw the threaded connection end of the guide column 142 into the threaded connection hole on the body 133, so that the guide column 142 is vertically fastened to the body 133, and the installed positioning part 13 is positioned (elastically positioned) on the corresponding upper frame 102 or the lower frame 103.

[0096] In other embodiments, a cross slot or an inner hexagonal slot may also be provided on the top surface of the first cap portion, and the first cap portion may be installed by a cross wrench or an outer hexagonal wrench.

[0097] In some embodiments, the four inner corners of the frame 10 are provided with corner guards 104, such as Figure 6 As shown, the structural stability of the frame 10 is improved.

[0098] In some embodiments, the hook 11 is detachably mounted on the positioning portion 13. For example, a mounting hole 16 for mounting the hook 11 is provided on the side of the positioning portion 13, and the hook 11 is mounted on the positioning portion 13 by fitting into the mounting hole 16. Figure 1 and Figure 5 ( Figure 6-Figure 7 ) as shown.

[0099] refer to Figure 8 . In some embodiments, the hook 11 includes a connected cylindrical pin 112 and a hook head 116, and the four hooks 11 are arranged facing each other with their respective hook heads 116. The hook head 116 serves as the hanging end of the hook 11, and is used to hang the lower edge of the lower hanging structure hole 201 and the upper edge of the upper hanging structure hole 201 of the metal bipolar plate 20 respectively. A second cap portion 115 protruding laterally is provided on the first end of the cylindrical pin 112, and the hook head 116 is fixedly connected to the second cap portion 115. For example, the hook head 116 is welded in the wire groove at the top of the second cap portion 115. A pin shaft 111 that crosses the cylindrical pin 112 is provided on the second end of the cylindrical pin 112, and the pin shaft 111 is fixedly penetrated in the cylindrical pin 112 (for example, the pin shaft 111 passes through the cylindrical pin 112 and is welded on the cylindrical pin 112), and both ends of the pin shaft 111 are exposed and protrude from the side of the cylindrical pin 112. A washer 113 is movably mounted on the cylindrical pin 112 between the second cap 115 and the pin 111. The washer 113 can move on the cylindrical pin 112 between the second cap 115 and the pin 111. A second elastic telescopic portion 114 is movably mounted on the cylindrical pin 112 between the washer 113 and the second cap 115. If the washer 113 is pushed toward the second cap 115, the second elastic telescopic portion 114 can be squeezed; when the washer 113 is released, the second elastic telescopic portion 114 is elastically stretched, and the washer 113 can be pushed back toward the pin 111.

[0100] refer to Fig. 9 , which shows that the hook 11 is different from the above Figure 8 In this embodiment, the hook head 116 is detachably connected to the second cap portion 115. The hook head 130 is detachably mounted on the second cap portion 115 via a connecting rod 117. One end of the connecting rod 117 is fastened to the second cap portion 115, and the other end of the connecting rod 117 is connected to the hook head 116 (for example, by welding or integral molding).

[0101] refer to Figure 10-12 , which clearly shows the arrangement structure of the mounting hole 16 on the positioning portion 13. Fig.10 The mounting holes 16 are shown in Figure 2 The rear enlarged structure on the second positioning portion 132 in the embodiment, and the installation state of the hook 11 on the rear side of the installation hole 16; Fig.11 and Fig.12The mounting holes 16 are shown in Figure 5 ( Figure 6-Figure 7 ) The front and back enlarged structures on any one of the positioning parts 13 (body 133) in the embodiment, and the installation state of the hook 11 on the front and back of the installation hole 16. Figure 10-12 As shown, a mounting hole 16 for the second end of the cylindrical pin 112 to pass through is provided on the side of the positioning portion 13. The mounting hole 16 has a central hole 161 and a first direction ( Fig.11 and Fig.12 The first direction in is the horizontal direction; Fig.10 In the figure, taking the mounting hole 16 located on the right side of the second positioning portion 132 as an example, the first direction is the horizontal direction. Taking the mounting hole 16 located on the left side of the second positioning portion 132 as an example, the first direction is the two avoidance holes 162 obliquely in the upper right and lower left directions). Among them, the center hole 161 is used for the elastic passage of the second end of the cylindrical pin 112, and the two avoidance holes 162 are used for the passage of the protruding ends of the pin shaft 111. The diameter of the gasket 113 is larger than the long diameter of the mounting hole 16 (or the diameter of the center hole 161). After the second end of the cylindrical pin 112 passes through the mounting hole 16, the elastic force of the second elastic telescopic portion 114 is used to make the gasket 113 contact the front side of the positioning portion 13 on the side where the hook 11 is installed (the front side of the frame 10), so that the cylindrical pin 112 can elastically pass through the mounting hole 16, and the mounting hole 16 can block the gasket 113 outside the front side of the positioning portion 13.

[0102] A second direction connected to the center hole 161 is also provided on the back of the positioning portion 13 located on the exit side of the cylindrical pin 112 (the back side of the frame 10) (the second direction needs to form a certain rotation angle with the first direction, and the rotation angle is preferably 90 degrees, Fig.11 and Fig.12 The second direction in is the vertical direction; Fig.10 In the embodiment, taking the mounting hole 16 located on the right side of the second positioning portion 132 as an example, the first direction is the horizontal direction, and the second direction corresponds to the vertical direction. For example, taking the mounting hole 16 located on the left side of the second positioning portion 132 as an example, the first direction is the oblique upper right and lower left direction, and the second direction corresponds to the oblique upper left and lower right direction). The two recessed grooves 163 are used to positionally limit the protruding ends of the pin shaft 111 that pass through the mounting hole 16 and elastically fall therein after the cylindrical pin 112 is rotated. Fig.10 and Fig.12 It is shown that the protruding ends of the pin 111 are just elastically snapped into the two sinks 163, so that the hook 11 is in a directional state. In this way, it is ensured that the hook 11 will not rotate or fall out during use. Fig.11 and Fig.12It is also shown that the main body 133 of the positioning portion 13 has two threaded connection holes 134 for installing the guide pillars 142.

[0103] It can be seen that after the hook 11 is installed, the second elastic telescopic part 114 is in a forced contraction state, so that the hook 11 is pressed against the positioning part 13; the gasket 113 plays the role of elastically blocking the hook head 116 outside the insertion side of the positioning part 13. When the hook 11 is slightly deformed during use (inevitable), the second elastic telescopic part 114 is used to make the hook 11 have a certain elasticity, and cooperate with the elastic force of the first elastic telescopic part 141, so that the hook 11 can obtain a leveraging effect when it is hung with the hanging structure hole 201 on the metal bipolar plate 20, that is, the hook 11 has an adaptive adjustment function, so that it can adapt well to the hanging surface, effectively improve the contact performance between the hook 11 and the metal bipolar plate 20, and thus ensure the coating quality. Preferably, by adopting four independently driven and controlled sub-hanging mechanisms, the initial hanging position and angle of each hook 11 can be independently adaptively adjusted through four independent positioning parts 13, and during the elastic recovery movement of each positioning part 13, each hook 11 can further adaptively adjust the hooking position and angle, and each can compensate for the slight deformation of the hook 11, thereby effectively eliminating the hidden danger of poor contact between the hook 11 and the metal bipolar plate 20.

[0104] It should be noted that the second direction determines the hooking direction of the hook 11, and the second direction does not necessarily have to be orthogonal to the first direction. Figure 5 The four hooks 11 are all arranged in a vertical direction. If the hook 11 needs to be tilted to adapt to the special hole shape of the mounting structure hole on some metal bipolar plates, the two sinks 163 can be adjusted accordingly to offset the vertical direction. For example, Figure 2 It is shown that a hook 11 located on the upper left side and a hook 11 located on the lower right side are set in an inclined direction, which can be achieved by setting the two recesses 163 on the two mounting holes 16 to the corresponding inclined directions (in this example, the setting directions of the two avoidance holes 162 on the two mounting holes 16 are also changed accordingly). This example is only for the convenience of explaining the role of the direction of the hook 11 and should not be understood as limiting the present invention. The avoidance holes 162 and recesses 163 on the mounting holes 16 are set in various directions in order to adapt to the shape and position of the mounting structure hole 201 on the metal bipolar plate 20, so that after mounting, when the hook 11 generates tension on the metal bipolar plate 20, the force on the metal bipolar plate 20 is ensured to be relatively uniform, and at the same time, obvious torque is avoided on the hook 11, so that after clamping, the metal bipolar plate 20 can be hung relatively evenly in the mounting area within the frame 10.

[0105] refer to Fig. 9 , Fig.11 and Fig.14 In some embodiments, a groove 1153 is provided on the top surface of the second cap portion 115, a screw hole 1154 is provided on the bottom surface of the groove 1153, and the groove 1153 has a lateral opening 1151 on the top side of the second cap portion 115; and the fastening end of the connecting rod 117 is bent into a ring portion 1171, such as Fig.14 (a) and Fig.14 (d) As shown. By placing the annular portion 1171 into the groove 1153 and allowing the rod body of the connecting rod 117 to fall into the lateral opening 1151 of the groove 1153, the connecting rod 117 is restricted in the lateral opening 1151 of the groove 1153, so that the hook head 116 connected to the connecting rod 117 cannot rotate; and then by passing the screw 1152 through the ring hole of the annular portion 1171 and screwing it into the screw hole 1154 to press the annular portion 1171 to form a crimping connection, the connecting rod 117 and the hook head 116 connected thereto can be fastened to the cylindrical pin 112, as shown in FIG. Fig. 9 By designing the hook 11 to be detachable and split, the cylindrical pin 112 as the hook 11 loading and unloading structure can be separately installed on the positioning part 13 (body 133), and then the hook head 116 can be installed on the cylindrical pin 112, which solves the problem of using an integrated hook (for example Figure 8 The hook head and the cylindrical pin are generally welded together) and are prone to interference with the positioning portion 13 and the frame during loading and unloading. After the life of the hook head 116 expires, only the hook head 116 with the connecting rod 117 needs to be replaced (the integrated hook requires replacement of the entire hook including the cylindrical pin), thereby greatly reducing the replacement cost of the hook 11.

[0106] In some embodiments, the second elastic retractable portion 114 includes a spring.

[0107] In one example, Fig.13 right Figure 8 The installation process of the hook 11 shown in FIG. Figure 8 The hook 11 is installed on Figure 1 For example, first, on the loading side, align the protruding direction of the pin shaft 111 on the hook 11 with the direction of the avoidance hole 162 of the mounting hole 16 on the positioning portion 13, such as Fig.13 Then, the second end of the cylindrical pin 112 is inserted into the mounting hole 16, as shown in FIG. Fig.13 Then, the second elastic expansion portion 114 is squeezed to allow the cylindrical pin 112 to further enter the mounting hole 16, and the pin shaft 111 on the second end of the cylindrical pin 112 is completely extended out of the avoidance hole 162, as shown in FIG. Fig.13Finally, by rotating the cylindrical pin 112, and under the elastic force of the second elastic telescopic part 114, the two protruding ends of the pin shaft 111 are rotated into the corresponding side of the sink groove 163, and under the elastic force of the second elastic telescopic part 114, and under the cooperation of the sink groove 163 and the gasket 113, the two protruding ends of the pin shaft 111 are accurately positioned in the sink groove 163, so that the hook 11 is stably installed on the positioning part 13, as shown in FIG. Fig.13 (d) As shown. The back side of the hook 11 after installation is as follows Fig.10 When the hook 11 is disassembled, only the reverse operation is required, which is convenient and quick.

[0108] In another example, Fig.14 right Fig. 9 The installation process of the hook 11 shown in FIG. Fig. 9 The hook 11 is installed on Figure 5 Taking the positioning portion 13 (body 133) of the embodiment as an example, first, the second end of the cylindrical pin 112 on which the hook head 116 has not yet been installed faces the mounting hole 16 of the positioning portion 13 on the insertion side, and the protruding direction of the pin shaft 111 on the cylindrical pin 112 is aligned with the direction of the avoidance holes 162 on both sides of the center hole 161, and the second end of the cylindrical pin 112 is ready to be inserted into the mounting hole 16, as shown in FIG. Fig.14 Then, the second end of the cylindrical pin 112 is inserted into the mounting hole 16, and the gasket 113 is pressed against the insertion side of the positioning portion 13, as shown in FIG. Fig.14 (b). At this time, the connecting direction of the two opposite lateral openings 1151 on the top surface of the second cap portion 115 is consistent with the protruding direction of the pin shaft 111 and the connecting direction of the two avoidance holes 162 (the two opposite lateral openings 1151 are opened on the side wall of the groove 1153. The advantage is that when the cylindrical pin 112 is installed, it is not necessary to distinguish the direction, and only the protruding direction of the pin shaft 111 needs to be identified, so as to facilitate the installation of the annular portion 1171 of the connecting rod 117 and improve efficiency). At the same time, it can be seen from the back of the positioning portion 13 that the protruding ends of the pin shaft 111 are also located in the avoidance holes 162, as shown in FIG. Fig.14 (f) As shown. Next, continue to press the cylindrical pin 112 into the mounting hole 16, squeeze the spring (the second elastic telescopic portion 114), so that the cylindrical pin 112 elastically enters the mounting hole 16, and the pin shaft 111 on the second end of the cylindrical pin 112 is completely extended from the back of the positioning portion 13 to the avoidance hole 162; then, by rotating the cylindrical pin 112 90 degrees, the connection direction of the two lateral openings 1151 of the groove 1153 on the top surface of the second cap portion 115 is orthogonal to the connection direction of the two avoidance holes 162, as shown in FIG. Fig.14As shown in (c), under the elastic force of the spring, the two protruding ends of the pin shaft 111 are rotated into the corresponding side of the sink groove 163, and continue to be pulled by the elastic force of the spring, and under the cooperation of the sink groove 163 and the gasket 113, the two protruding ends of the pin shaft 111 are accurately positioned in the sink groove 163. Fig.14 (g) The back of the positioning part 13 shows the positioning state of the pin shaft 111 in the recess 163. The cylindrical pin 112 is thus installed and positioned on the positioning part 13. Next, the hook head 116 can be installed, including first placing the annular portion 1171 of the connecting rod 117 into the groove 1153, and allowing the rod body of the connecting rod 117 to fall into the lateral opening 1151 on the corresponding side, as shown in FIG. Fig.14 (d) as shown; then, by screwing the screw 1152 into the screw hole 1154 to tighten the annular portion 1171, the connecting rod 117 is fixed, and the connecting rod 117 and the hook head 116 connected thereto are installed on the cylindrical pin 112, completing the installation of the hook 11 and the positioning portion 13, as shown in FIG. Fig.14 (e) As shown. The front state of the hook 11 after installation, as shown Fig.11 The back side of the hook 11 after installation is as shown in FIG. Fig.12 As shown. When the hook 11 is disassembled, only the reverse operation is required, which is convenient and quick. The body 133 and the guide column 142 can be installed after the hook 11 is installed on the body 133. Alternatively, the body 133 and the guide column 142 can be installed on the corresponding frame first, and then the hook 11 can be installed on the body 133. Both methods can realize the installation of the hanging mechanism on the frame 10.

[0109] Combined with reference Fig.11 In some embodiments, the hook head 116 is in the shape of a scimitar with multiple inflection points 1161 (turning points), and the inner blade surface of the scimitar is used as the hook surface. For example, the hook head 116 is in the shape of a scimitar with a narrow hook surface (blade surface), and has three inflection points 1161 as shown, but is not limited thereto. Fig.11 Taking the direction as an example, the second inflection point 1161 located in the middle is the lowest point on the hook head 116, that is, the hanging point.

[0110] In some embodiments, the scimitar-shaped hook head 116 is flat.

[0111] In some embodiments, the cross-sectional shape of the hook head 116 is a flat rectangle with rounded corners, such as Fig.11 Alternatively, the cross-sectional shape of the hook head 116 is a trapezoidal shape (refer to the cross-sectional shape of a sickle) with a thickness gradually widening from the scimitar-shaped blade surface to the blade back direction, and each corner of the cross-sectional shape is rounded.

[0112] Fig.17 Shows Fig. 9 The hook 11 of the embodiment and Figure 8 The hooking effect comparison of the hook 11 of the embodiment. Fig.17 As shown in (a), Figure 8 The hook head of the hook 11 is usually of equal diameter and is extended to connect to the cylindrical pin, and the hook point on the metal bipolar plate 20 is generally located at an inner corner of the mounting structure hole 201. Therefore, Figure 8 If the hook head of the hook 11 is too thin, there will be a hidden danger of insufficient strength, and it is easy to deform during use and maintenance, resulting in poor process stability. Figure 8 If the hook head of the hook 11 is too thick, it will occupy a larger hanging area, causing the risk of coating shielding.

[0113] like Fig.17 As shown in (b), Fig. 9 The hook 11 is designed to have a hook head in the shape of a scimitar with a narrow hanging surface. Not only does it occupy a very small area of ​​the hanging point, successfully avoiding the risk of coating shielding, but it also utilizes the relatively wide width of the scimitar-shaped blade surface (the width between the blade surface and the blade back) to effectively improve the strength of the hook 11 itself and its hanging.

[0114] refer to Figure 1 and Figure 5 . In some embodiments, a rotating shaft is provided in the middle of the upper frame 102 and the middle of the lower frame 103 of the frame 10. Specifically, a first rotating shaft 12 is vertically provided in the middle of the upper frame 102, and a second rotating shaft 15 is vertically provided in the middle of the lower frame 103. The first rotating shaft 12 and the second rotating shaft 15 are coaxially arranged to constitute the rotating shaft of the frame 10. The first rotating shaft 12 and the second rotating shaft 15 are used to be installed and matched with the turntable in the coating equipment, so that the frame 10 of the coating fixture 1 can revolve with the turntable and rotate relative to the turntable. During coating, the first rotating shaft 12 and the second rotating shaft 15 play a conductive and positioning role at the same time. During clamping, the frame 10 is vertically matched and positioned on the clamping station through the first rotating shaft 12 and the second rotating shaft 15.

[0115] In some embodiments, a plurality of mounting holes 16 are sequentially arranged on both sides of the rotating shaft in the horizontal direction, and each mounting hole 16 on each side is used for selective installation of one hook 11. In this way, the installation position of the hook 11 matched with the mounting hole 16 can be flexibly adjusted according to the size of the metal bipolar plate 20, which is conducive to meeting the clamping requirements of metal bipolar plates 20 of various sizes.

[0116] In some embodiments, the mounting holes 16 are symmetrically arranged on both sides of the rotating shaft.

[0117] In some embodiments, when four sub-hanging mechanisms are used, the two positioning portions 13 located on both sides of the first rotating shaft 12 or the second rotating shaft 15 are symmetrically arranged.

[0118] In some embodiments, the mounting holes 16 are arranged on the positioning portion 13 at intervals. Fig.10 shown.

[0119] In some embodiments, the mounting holes 16 on the same side of the rotating shaft can be connected through their own avoidance holes 162, and a cross process hole not used for mounting the hook 11 is left on the outermost side to increase the setting density of the mounting holes 16 and facilitate processing. Figure 6-Figure 7 and Figure 11-Figure 12 shown.

[0120] In some embodiments, the drive mechanism includes a cylinder or an electric push rod. Figure 1 The automated clamping device shown in the figure can use a cylinder or an electric push rod to drive the second positioning part 132. Figure 5 The automated clamping device shown can use four air cylinders or electric push rods to independently drive the four positioning parts 13 respectively.

[0121] In some embodiments, the transfer mechanism includes a robot.

[0122] Through similar reverse operations, the above-mentioned automatic clamping device of the present invention can also automatically unclamp the metal bipolar plate 20 that has been taken out of the furnace after coating from the coating fixture 1. That is, the above-mentioned automatic clamping device of the present invention can also be used as an automatic unclamping device.

[0123] The following is a further detailed description of an automatic clamping method of the present invention through specific implementation modes and in conjunction with the accompanying drawings.

[0124] refer to Fig.15 In some embodiments, an automated clamping method of the present invention uses the above-mentioned Figure 1 The automated clamping device shown includes the following process steps: First, according to the size of the metal bipolar plate 20, the hooks 11 (4 pieces) are installed in the mounting holes 16 at appropriate positions on the coating fixture 1, and the frame 10 is vertically placed and positioned on a clamping station (also a clamping station) equipped with, for example, a driving cylinder (driving mechanism), with the front side (clamping working surface) facing the robot (transmission mechanism), such as Fig.15 (a) shown.

[0125] Then, by starting the cylinder, the second positioning part 132 is pressed down, so that the second positioning part 132 drives the two hooks 11 thereon to move elastically synchronously and move downward a certain distance, so that the distance between the hook 11 on the second positioning part 132 and the hook 11 on the first positioning part 131 in a fixed state is reduced to the waiting hanging position, that is, the distance between the hook 11 on the second positioning part 132 and the hook 11 on the first positioning part 131 is reduced to a suitable distance so that the four hooks 11 can be suspended and aligned with the four hanging structure holes 201 of the metal bipolar plate 20 at the same time, so as to be suitable for hanging the metal bipolar plate 20, such as Fig.15 (b) shown.

[0126] Next, the metal bipolar plate 20 is transferred to the clamping station by the robot and placed in front of the coating fixture 1, so that the surface of the metal bipolar plate 20 is parallel to the clamping working surface of the frame 10 and aligned with the clamping area within the frame 10, as shown in FIG. Fig.15 (c) shown.

[0127] Then, by moving the manipulator forward, the four mounting holes 201 on the metal bipolar plate 20 are aligned with the four hooks 11 respectively, until the plate surface of the metal bipolar plate 20 and the mounting points of the hook heads 116 of the four hooks 11 are in a coplanar alignment or approximately coplanar alignment state, such as Fig.15 At this time, the four hooks 11 are all in a relaxed state (ie, there is no substantial connection between the hanging structure holes 201 and the hook heads 116 of the four hooks 11).

[0128] Next, the relative position of the metal bipolar plate 20 is adjusted by moving the manipulator upward, so that the lower edges of the two hanging structure holes 201 below the metal bipolar plate 20 are hung on the hooks 11 on the first positioning portion 131, as shown in FIG. Fig.15 (e) As shown, the two hooks 11 on the upper second positioning portion 132 are still in a relaxed state.

[0129] At this time, the cylinder slowly removes the squeezing force on the second positioning part 132, so that the second positioning part 132 gradually moves upward to perform elastic recovery under the action of the spring force of the elastic mechanism 14, so that the distance between the upper hook 11 and the lower hook 11 gradually increases, so as to gradually hook the upper edges of the two upper hanging structure holes 201. When the hook 11 on the moving second positioning part 132 hooks the upper edges of the two hanging structure holes 201 above the metal bipolar plate 20, the manipulator can release the metal bipolar plate 20. Thereafter, the second positioning part 132 continues to move upward, and the metal bipolar plate 20 is gradually tensioned between the four hooks 11 driven by the two hooks 11 on the moving second positioning part 132, as shown in FIG. Fig.15As shown in (f), after the driving force is completely removed, the metal bipolar plate 20 can be fully tensioned on the frame 10 of the coating fixture 1, thereby achieving automatic and rapid clamping.

[0130] refer to Fig.16 In some embodiments, an automated clamping method of the present invention uses the above-mentioned Figure 5 The automated clamping device shown includes the following process steps: First, according to the size of the metal bipolar plate 20, the hooks 11 (4 pieces) are installed in the mounting holes 16 at appropriate positions on the coating fixture 1, and the frame 10 is vertically placed and positioned on a clamping station equipped with, for example, 4 driving cylinders, with the front side facing the robot, such as Fig.16 (a) shown.

[0131] Then, by starting the four cylinders, the four positioning parts 13 are respectively ejected, so that the four positioning parts 13 move toward each other by a certain distance, so that the spacing between the hooks 11 on the four positioning parts 13 is reduced to the waiting hanging position, that is, the spacing between the hooks 11 on the four positioning parts 13 is reduced to a suitable distance so that the four hooks 11 can be suspended and aligned with the four hanging structure holes 201 of the metal bipolar plate 20 at the same time, such as Fig.16 (b) shown.

[0132] Next, the metal bipolar plate 20 is transferred to the coating fixture 1 by the robot, so that the surface of the metal bipolar plate 20 is parallel to the clamping working surface of the frame 10 and is aligned with the clamping area within the frame 10, such as Fig.16 (c) shown.

[0133] Then, by moving the manipulator forward, the four mounting holes 201 on the metal bipolar plate 20 are aligned with the four hooks 11 respectively, until the plate surface of the metal bipolar plate 20 and the mounting points of the hook heads 116 of the four hooks 11 are in a coplanar alignment or approximately coplanar alignment state, such as Fig.16 (d) is shown. At this time, the four hooks 11 are all in a relaxed state. Then, the four cylinders are slowly retracted to slowly remove the driving force on the four positioning parts 13, so that the four positioning parts 13 move back and forth elastically (automatically return to their positions), so that the distance between the four hooks 11 gradually increases. In this process, the four hooks 11 will gradually hook the corresponding mounting structure holes 201.

[0134] When the upper edges of the two hanging structure holes 201 above the metal bipolar plate 20 are hung on the two upper hooks 11, and the lower edges of the two hanging structure holes 201 below the metal bipolar plate 20 are also hung on the two lower hooks 11, the robot can release the metal bipolar plate 20. After that, the four positioning parts 13 continue to move up and down respectively, and the metal bipolar plate 20 is gradually hooked and tightened under the pull of the four hooks 11, as shown in FIG. Fig.16 (e) As shown. This enables automated rapid clamping.

[0135] It is understandable that when using e.g. Figure 5 When the automatic clamping device is used, the driving mechanism can also drive the two hooks on the lower side to move elastically synchronously, and keep the two hooks on the upper side in a fixed state. In addition, the relative position of the metal bipolar plate can be adjusted by moving the conveying mechanism downward, so that the two hooks on the upper side first hook the mounting structure holes, and then remove the driving force of the driving mechanism, so that the two hooks on the lower side also hook the mounting structure holes through elastic recovery movement.

[0136] Alternatively, the two hooks on the upper side can be driven to move elastically synchronously by the driving mechanism, and the two hooks on the lower side can be driven to move elastically synchronously by the driving mechanism. Thus, when the two hooks on any side are driven to move elastically, the two hooks on the same side are moved to the waiting position on the same horizontal plane.

[0137] Through similar reverse operations, the above-mentioned automatic clamping device of the present invention can be used to automatically unclamp the treated object (metal bipolar plate) that has been removed from the furnace after coating from the coating fixture. That is, the present invention also provides an automatic unclamping method, including: Vertically place the coating fixture clamping the processing object on the clamping station; The processing object in the clamping state is captured by the conveying mechanism; The driving mechanism is started to drive the hooks on at least one side to move elastically, so that the distance between the hooks facing each other is reduced, so that the hooks on at least one side are separated from the hanging structure holes on the processing object; The object to be processed is removed from the coating fixture through the conveying mechanism and conveyed out of the clamping station to complete the unclamping; The driving force is removed, so that the elastically moved hook performs an elastic recovery movement to return to its original position.

[0138] In summary, the present invention can automatically and efficiently complete the positioning, clamping and loosening operations of the processing object (such as a metal bipolar plate) during clamping by coordinating the coating fixture with the driving mechanism and the transmission mechanism, thereby reducing manual participation, thereby optimizing the rhythm of the clamping process, streamlining manpower, improving process stability and clamping efficiency, and thereby improving production efficiency. In addition, by designing a scimitar-shaped hook head, the strength of the hook can be improved and the risk of coating shielding can be eliminated; by making the hook have an elastic adaptive adjustment function, the hidden danger of poor contact with the product can be avoided; by designing a detachable hook, the cost of replacing the hook can also be reduced.

[0139] The time taken for manual clamping using existing fixtures is generally more than 40 to 50 seconds, while the clamping time taken by using the present invention is only 15 to 20 seconds, which is efficient and time-saving, can achieve one-time coating on both sides of the treatment object, and can ensure the integrity and quality of the coating, and is suitable for promotion and application.

[0140] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as described in the claims. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. An automated clamping device, characterized in that: include: Coating fixture, drive mechanism and transmission mechanism; The coating fixture is vertically placed on the clamping station, and two hooks are respectively provided on the upper and lower sides of the coating fixture, and the hooks are arranged in pairs facing each other, and the hooks on at least one side are configured to be able to move elastically and elastically return relative to the other side; The driving mechanism is arranged on the clamping station, and is used to drive the hooks on at least one side to perform the elastic movement, so that the distance between the hooks facing each other is reduced, so as to be suitable for hanging the processing object with the hanging structure hole, and after each of the hooks is aligned with the hanging structure hole, the driving force is removed, so that the hooks that have undergone the elastic movement perform the elastic recovery movement, so that the distance between the hooks facing each other is increased, and the hanging structure hole is hooked until the processing object is tightened on the coating fixture; The conveying mechanism is used to convey the processing object to the clamping station, align the hanging structure hole with each hook, and release the processing object after the driving mechanism removes the driving force and each hook hooks the hanging structure hole.

2. The automated clamping device according to claim 1, characterized in that: The coating fixture includes a frame vertically placed on the clamping station, and two hanging mechanisms respectively arranged on the upper and lower sides of the frame, the hanging mechanism is provided with a positioning part, the hook is arranged on the positioning part, the driving mechanism is used to drive the positioning part of at least one side of the hanging mechanism to make the elastic movement, so that the distance between the two hooks facing each other is reduced, after the driving force is removed, the positioning part of the hanging mechanism that has undergone the elastic movement makes the elastic recovery movement, so that the distance between the two hooks facing each other is increased, and the processing object is tensioned on the frame.

3. The automated clamping device according to claim 2, characterized in that: The positioning portion of the hanging mechanism located on the upper side of the frame is configured to be capable of the elastic movement and the elastic recovery movement relative to the lower side, and the driving mechanism is used to drive the positioning portion of the hanging mechanism located on the upper side of the frame to perform the elastic movement.

4. The automated clamping device according to claim 3, characterized in that: The positioning part of the hanging mechanism located at the lower side of the frame is the first positioning part, and the positioning part of the hanging mechanism located at the upper side of the frame is the second positioning part. The first positioning part and the second positioning part are parallel to the horizontal direction. The first positioning part is fixed on the frame. The hanging mechanism located at the upper side of the frame is provided with an elastic mechanism, and the elastic mechanism is provided on the frame. The second positioning part is movably provided on the elastic mechanism. The elastic mechanism is provided with a first elastic telescopic part, and the second positioning part conflicts with the first elastic telescopic part. Each of the hooks is provided on the first positioning part and the second positioning part in pairs. The driving mechanism is used to drive the second positioning part to make the elastic movement close to the first positioning part and force the first elastic telescopic part to contract. After the driving force is removed, the first elastic telescopic part stretches, driving the second positioning part to make the elastic recovery movement away from the first positioning part.

5. The automated clamping device according to claim 4, characterized in that: The frame is rectangular and includes two opposite side frames and an upper frame and a lower frame located between the two side frames. There are two elastic mechanisms, which are respectively arranged on the two side frames. The elastic mechanisms are vertically provided with guide columns, and the upper ends of the guide columns are movable through the second positioning portion and then connected to the upper frame. The lower ends of the guide columns are provided with a first cap portion, and the first elastic telescopic portion is sleeved on the guide column between the second positioning portion and the first cap portion.

6. The automated clamping device according to claim 5, characterized in that: The lower frame serves as the first positioning portion.

7. The automated clamping device according to claim 2, characterized in that: The positioning portion of the hanging mechanism located on the upper side of the frame is configured to be able to perform the elastic movement and the elastic recovery movement relative to the lower side, and the driving mechanism is used to drive the positioning portion of the hanging mechanism located on the upper side of the frame to perform the elastic movement, and the positioning portion of the hanging mechanism located on the lower side of the frame is also configured to be able to perform the elastic movement and the elastic recovery movement relative to the upper side, and the driving mechanism is also used to drive the positioning portion of the hanging mechanism located on the lower side of the frame to perform the elastic movement.

8. The automated clamping device according to claim 7, characterized in that: Each of the hanging mechanisms includes two sub-hanging mechanisms, and the four sub-hanging mechanisms are arranged in pairs on two upper and lower opposite frames of the frame. Each of the sub-hanging mechanisms is provided with a first elastic telescopic part and a positioning part. The positioning part is movably arranged on the corresponding frame, and the first elastic telescopic part is limited between the corresponding frame and the positioning part. The hooks are arranged in pairs on each positioning part facing each other. When the four positioning parts are driven by the driving mechanism respectively, they each make the elastic movement away from the corresponding frame and force the corresponding first elastic telescopic part to contract. After the driving force is removed, each of the first elastic telescopic parts stretches, driving the corresponding positioning part to make the elastic recovery movement close to the corresponding frame.

9. The automated clamping device according to claim 8, characterized in that: The positioning portion includes a connected body and a guide column, the body is located on the inner side of the frame, the hook is arranged on the body, the guide column passes through the frame from the corresponding frame, a first cap portion is provided on the passing end of the guide column, and the first elastic telescopic portion is elastically sleeved on the guide column between the corresponding frame and the first cap portion.

10. The automated clamping device according to claim 2, characterized in that: The hook comprises a cylindrical pin and a hook head, a second cap portion is provided on the first end of the cylindrical pin, the hook head is connected to the second cap portion, a pin shaft is provided on the second end of the cylindrical pin to cross the cylindrical pin, and two ends of the pin shaft are exposed and protrude from the side of the cylindrical pin, a gasket is provided on the cylindrical pin upper movable sleeve between the second cap portion and the pin shaft, and a second elastic telescopic portion is provided on the cylindrical pin upper movable sleeve between the gasket and the second cap portion; a mounting hole for the second end of the cylindrical pin to pass through is provided on the positioning portion, the mounting hole has a center hole and two avoidance holes connected to the first direction side of the center hole, the center hole is used for the elastic passing of the second end of the cylindrical pin, the two avoidance holes correspond to the passing of the protruding two ends of the pin shaft, and two sink grooves connected to the second direction side of the center hole are also provided on the surface of the positioning portion located on the passing side of the cylindrical pin, and the two sink grooves correspond to the position restriction of the protruding two ends of the pin shaft that pass through the mounting hole and elastically fall into it after rotating the cylindrical pin.

11. The automated clamping device according to claim 10, characterized in that: The hook head is fastened to the second cap portion through a connecting rod, a groove is provided on the top surface of the second cap portion, a screw hole is provided on the bottom surface of the groove, the groove has a lateral opening on the top side surface of the second cap portion, the fastening end of the connecting rod is bent into an annular portion, and the annular portion is placed in the groove so that the rod body of the connecting rod is restricted by the lateral opening of the groove, and the annular portion is pressed by passing a screw through the annular hole of the annular portion and then screwing the screw into the screw hole, thereby fastening the connecting rod and the hook head connected thereto to the cylindrical pin.

12. The automated clamping device according to claim 11, characterized in that: The hook head is in the shape of a scimitar with multiple inflection points, and the inner blade surface of the scimitar is used as the hanging surface.

13. The automated clamping device according to claim 10, characterized in that: A rotating shaft is provided in the middle of two upper and lower opposite frames of the frame. The rotating shaft serves as a rotation axis of the frame. The frame is vertically matched with the clamping station and positioned through the rotating shaft.

14. The automated clamping device according to claim 13, characterized in that: A plurality of the mounting holes are arranged in sequence along the horizontal direction on both sides of the rotating shaft, and each mounting hole on each side is used for the selective installation of one of the hooks.

15. An automated clamping method, using the automated clamping device according to claim 1, characterized in that: include: Place the coating fixture vertically on the clamping station; The driving mechanism is started to drive the hooks on at least one side to move elastically, so that the distance between the hooks facing each other is reduced to be suitable for hanging the processing object with the hanging structure hole; The processing object is conveyed to the clamping station by a conveying mechanism, and the hanging structure hole is aligned with each of the hooks; Removing the driving force, so that the hooks that have undergone the elastic movement make elastic recovery movement, so that the distance between the hooks facing each other increases, and the hanging structure holes are hooked until the processing object is tightened on the coating fixture to complete the clamping; Wherein, when each of the hooks hooks the hanging structure hole, the conveying mechanism releases the processing object.

16. The automated clamping method according to claim 15, characterized in that: The driving mechanism drives the two hooks on the upper side to synchronously perform the elastic movement, and keeps the two hooks on the lower side in a fixed state; or, drives the two hooks on the lower side to synchronously perform the elastic movement, and keeps the two hooks on the upper side in a fixed state; or, drives the two hooks on the upper side to synchronously perform the elastic movement, and also drives the two hooks on the lower side to synchronously perform the elastic movement; or, drives the four hooks separately to perform the elastic movement.

17. The automated clamping method according to claim 16, characterized in that: When the processing object is transmitted to the clamping station, the processing object is moved by the transmission mechanism so that the hanging structure holes are aligned with the hooks; when the two hooks located on the lower side are in a fixed state, the relative position of the processing object is adjusted by moving the transmission mechanism upward, so that the two hooks on the lower side first hook the hanging structure holes, and then the driving force of the driving mechanism is removed, so that the two hooks on the upper side also hook the hanging structure holes through the elastic recovery movement; or, when the two hooks on the upper side are in a fixed state, the relative position of the processing object is adjusted by moving the transmission mechanism downward, so that the two hooks on the upper side first hook the hanging structure holes, and then the driving force of the driving mechanism is removed, so that the two hooks on the lower side also hook the hanging structure holes through the elastic recovery movement.

18. The automated clamping method according to claim 15, characterized in that: When the two hooks on any one side are driven to perform the elastic movement, the two hooks are moved to positions to be hung on the same horizontal plane.

19. The automated clamping method according to claim 15, characterized in that: When the driving force is removed, the driving mechanism gradually removes the applied driving force, so that the hooks that have elastically moved gradually make elastic recovery movements, so that the distance between the hooks facing each other gradually increases, so as to gradually hook the hanging structure holes, and after the driving force is completely removed, the hooks facing each other completely tighten the processing object on the coating fixture.

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