A metal sheet clamping mechanism and a welding device

Abstract

The present invention discloses a metal sheet clamping mechanism and a welding device, which relate to the technical field of machining. It includes a fixture and a control component. The fixture includes a positioning seat and a movable clamping pin arranged on the positioning seat. The movable clamping pin includes a first positioning component and a second positioning component. A first positioning block and a second positioning block are also arranged on the positioning seat. The first positioning component includes a first positioning pin opposite to the first positioning block, and the second positioning component includes a second positioning pin opposite to the second positioning block. The metal sheet is located in the space jointly enclosed by the first positioning block, the first positioning pin, the second positioning block and the second positioning pin. The control component is connected to the first positioning component so that the first positioning pin can approach or move away from the first positioning block. The control component is also connected to the second positioning component so that the second positioning pin can approach or move away from the second positioning block. It can reduce production costs and improve the stability of clamping the metal sheet.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, and more particularly, to a clamping mechanism for metal sheets and a welding device. Background Art

[0002] The welding and assembly of metal sheets are often used in linear motors, battery housings, or other products. The processing of metal sheets is a difficult task. Since metal sheets are relatively thin, they are prone to deformation during processing, and fixtures are often required to fix them to ensure the required welding and assembly accuracy.

[0003] However, the existing metal sheet fixtures have a complex structure and extremely high machining accuracy requirements for fixture parts, resulting in high production costs. Moreover, the clamping is not firm, and the metal sheets are prone to falling off the fixtures during use, with poor practicability. Summary of the Invention

[0004] The purpose of the present invention is to provide a clamping mechanism for metal sheets and a welding device, which can reduce production costs and improve the stability of clamping metal sheets.

[0005] The embodiments of the present invention are implemented as follows:

[0006] On the one hand, an embodiment of the present invention provides a clamping mechanism for metal sheets, including a fixture and a control component. The fixture includes a positioning seat and a movable clamping pin arranged on the positioning seat. The movable clamping pin includes a first positioning component and a second positioning component. A first positioning block and a second positioning block are also arranged on the positioning seat. The first positioning component includes a first positioning pin opposite to the first positioning block, and the second positioning component includes a second positioning pin opposite to the second positioning block. The metal sheet is located in the space jointly enclosed by the first positioning block, the first positioning pin, the second positioning block, and the second positioning pin. The control component is connected to the first positioning component to enable the first positioning pin to approach or move away from the first positioning block, and the control component is also connected to the second positioning component to enable the second positioning pin to approach or move away from the second positioning block.

[0007] Optionally, the first positioning component includes a first slide rail arranged on the positioning seat and a first connecting plate slidably connected to the first slide rail. The first positioning pin is arranged on the first connecting plate. The second positioning component includes a second slide rail arranged on the positioning seat and a second connecting plate slidably connected to the second slide rail. The second positioning pin is arranged on the second connecting plate. The control component is respectively connected to the first connecting plate and the second connecting plate.

[0008] Optionally, the control component includes a support frame and a first linear drive member disposed on the support frame. A support plate is disposed on the first linear drive member, and an abutting member and a cam bearing are disposed on the support plate. A guiding inclined surface is disposed on the first connecting plate, and the cam bearing can abut against the guiding inclined surface to push the first connecting plate to slide along the first slide rail, so that the first positioning pin approaches the first positioning block; the abutting member can abut against the second connecting plate to push the second connecting plate to slide along the second slide rail, so that the second positioning pin approaches the second positioning block.

[0009] Optionally, a first elastic member is disposed between the first connecting plate and the positioning seat, so that the first positioning pin has a tendency to move away from the first positioning block; a second elastic member is disposed between the second connecting plate and the positioning seat, so that the second positioning pin has a tendency to move away from the second positioning block.

[0010] Optionally, the metal sheet clamping mechanism further includes a magnetic attraction mechanism disposed on the positioning seat. The magnetic attraction mechanism includes a magnet corresponding to the positioning seat for attracting the metal sheet on the positioning seat.

[0011] Optionally, the magnetic attraction mechanism further includes a connecting bracket and a magnet mounting seat. The connecting bracket is connected to the positioning seat. A linear slide rail is disposed on the connecting bracket, and the magnet mounting seat is slidably connected to the connecting bracket through the linear slide rail, so that the magnet approaches or moves away from the positioning seat.

[0012] Optionally, the control component further includes a second linear drive member. A clamping member is disposed on the second linear drive member, and a boss cooperating with the clamping member is correspondingly disposed on the magnet mounting seat for driving the magnet mounting seat to move away from the positioning seat. A third elastic member is disposed between the connecting bracket and the magnet mounting seat, and the third elastic member is used to make the magnet mounting seat have a tendency to move towards the positioning seat.

[0013] Optionally, there are adjustment gaps between the first positioning block and the second positioning block and the positioning seat respectively.

[0014] Optionally, a first slot hole and a second slot hole are respectively disposed on the positioning seat. The length extension direction of the first slot hole faces the first positioning block, and the length extension direction of the second slot hole faces the second positioning block. The first positioning pin is disposed through the first slot hole, and the second positioning pin is disposed through the second slot hole.

[0015] On the other hand, an embodiment of the present invention provides a welding device, including a welding torch and the metal sheet clamping mechanism described in any one of the above, and the welding torch is cooperatively connected with the fixture of the metal sheet clamping mechanism.

[0016] The beneficial effects of the embodiments of the present invention include:

[0017] For the metal sheet clamping mechanism and the welding device provided by the embodiments of the present invention, through the positioning seat and the movable clamping pins arranged on the positioning seat, the movable clamping pins include a first positioning component and a second positioning component, a first positioning block and a second positioning block are arranged on the positioning seat, and the control component is connected with the first positioning component so that the first positioning pin of the first positioning component can approach or depart from the first positioning block, and the control component is also connected with the second positioning component so that the second positioning pin of the second positioning component can approach or depart from the second positioning block. The metal sheet is located in the space jointly enclosed by the first positioning block, the first positioning pin, the second positioning block and the second positioning pin. The first positioning block is used for limiting the first side edge of the metal sheet, and the second positioning block is used for limiting the second side edge of the metal sheet. When the first positioning pin approaches the first positioning block and the second positioning pin approaches the second positioning block, the clamping and fixing of the metal sheet are realized; when the first positioning pin departs from the first positioning block and the second positioning pin departs from the second positioning block, the free picking and placing of the metal sheet are realized. By adopting the above form, high-precision positioning of the metal sheet can be carried out, and then operations such as welding or laser engraving of the product can be carried out, avoiding the deviation of the position of the metal sheet during the product processing. At the same time, the metal sheet clamping mechanism of the present application simplifies the clamping and fixing form, can reduce the production cost, and improves the stability of clamping the metal sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of the metal sheet clamping mechanism provided by the embodiment of the present invention;

[0020] Figure 2 It is one of the schematic structural diagrams of the fixture provided by the embodiment of the present invention;

[0021] Figure 3 is Figure 2 exploded view of;

[0022] Figure 4 It is the other schematic structural diagram of the fixture provided by the embodiment of the present invention;

[0023] Figure 5 The third structural schematic diagram of the fixture provided by the embodiment of the present invention;

[0024] Figure 6 The structural schematic diagram of the movable clamping pin provided by the embodiment of the present invention;

[0025] Figure 7 The structural schematic diagram of the control component provided by the embodiment of the present invention;

[0026] Figure 8 The structural schematic diagram of the cooperation between the control clamping pin and the control component provided by the embodiment of the present invention;

[0027] Figure 9 The structural schematic diagram of the magnetic attraction mechanism provided by the embodiment of the present invention;

[0028] Figure 10 The fourth structural schematic diagram of the fixture provided by the embodiment of the present invention.

[0029] Icon: 100 - Metal sheet clamping mechanism; 105 - Metal sheet; 110 - Fixture; 120 - Positioning seat; 122 - First positioning block; 124 - Second positioning block; 126 - First elastic member; 127 - Second elastic member; 128 - First slot; 129 - Second slot; 130 - Movable clamping pin; 132 - First positioning assembly; 1322 - First positioning pin; 1324 - First slide rail; 1326 - First connecting plate; 1328 - Guide inclined surface; 134 - Second positioning assembly; 1342 - Second positioning pin; 1344 - Second slide rail; 1346 - Second connecting plate; 140 - Magnetic attraction mechanism; 142 - Magnet; 144 - Connection bracket; 146 - Magnet mounting seat; 1462 - Boss; 148 - Linear slide rail; 149 - Third elastic member; 150 - Control component; 151 - Support frame; 152 - First linear driving member; 153 - Support plate; 1532 - Abutting member; 1534 - Cam bearing; 154 - Second linear driving member; 155 - Clamping member; Detailed implementation manners

[0030] To make the objectives, 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 with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0031] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0032] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0033] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0034] Please refer to Figures 1 to 5 , this embodiment provides a metal sheet clamping mechanism 100, including a fixture 110 and a control component 150. The fixture 110 includes a positioning seat 120 and a movable clamping pin 130 arranged on the positioning seat 120. The movable clamping pin 130 includes a first positioning component 132 and a second positioning component 134. A first positioning block 122 and a second positioning block 124 are also arranged on the positioning seat 120. The first positioning component 132 includes a first positioning pin 1322 opposite to the first positioning block 122, and the second positioning component 134 includes a second positioning pin 1342 opposite to the second positioning block 124. The metal sheet 105 is located in the space jointly enclosed by the first positioning block 122, the first positioning pin 1322, the second positioning block 124, and the second positioning pin 1342. The control component 150 is connected to the first positioning component 132 to enable the first positioning pin 1322 to approach or move away from the first positioning block 122. The control component 150 is also connected to the second positioning component 134 to enable the second positioning pin 1342 to approach or move away from the second positioning block 124.

[0035] Specifically, as shown in Figure 2 and Figure 3 , the fixture 110 includes a positioning seat 120 and a movable clamping pin 130 arranged on the positioning seat 120. The movable clamping pin 130 includes a first positioning component 132 and a second positioning component 134. Among them, the first positioning component 132 and the second positioning component 134 are arranged on one side surface of the positioning seat 120. Please refer to Figure 4, the first positioning block 122 and the second positioning block 124 are arranged on the other side of the positioning seat 120, and this side is used to place the metal sheet 105. In this way, the spatial structure of the fixture 110 can be fully utilized, making the fixture 110 more compact and facilitating control by the control component 150.

[0036] Please refer to Figure 3 、 Figure 4 and Figure 5 , the first positioning component 132 includes a first positioning pin 1322 opposite to the first positioning block 122, and the second positioning component 134 includes a second positioning pin 1342 opposite to the second positioning block 124. In the initial position, the first positioning pin 1322 is away from the first positioning block 122, and the second positioning pin 1342 is away from the second positioning block 124. At this time, the metal sheet 105 can be freely picked up and placed (as shown in Figure 4 ). When the control component 150 drives the first positioning component 132 and the second positioning component 134 to act respectively, when the first positioning pin 1322 approaches the first positioning block 122 and the second positioning pin 1342 approaches the second positioning block 124, the clamping and fixing of the metal sheet 105 are realized (as shown in Figure 5 ).

[0037] It should be noted that, first, the number of groups of the movable clamping pins 130 in this application is not specifically limited and can be one group, two groups or three groups. For example, when the number of groups of the movable clamping pins 130 in the fixture 110 corresponds to one group, the first positioning block 122 and the second positioning block 124 are correspondingly set to one group respectively to realize the clamping and fixing of one metal sheet 105. When the number of groups of the movable clamping pins 130 in the fixture 110 corresponds to two groups, the first positioning block 122 and the second positioning block 124 are correspondingly set to two groups respectively to realize the simultaneous clamping and fixing of two metal sheets 105. The actually selected number of groups can be flexibly set according to actual needs to meet actual processing requirements.

[0038] Second, the included angle and positional relationship between the first positioning block 122 and the second positioning block 124 in this application are not specifically limited. For example, when the metal sheet 105 is rectangular, the included angle between the first positioning block 122 and the second positioning block 124 is 90°. When the metal sheet 105 is parallelogram-shaped or other shapes, the included angle and positional relationship between the first positioning block 122 and the second positioning block 124 can be flexibly set according to the shape of the product to be clamped.

[0039] The metal sheet clamping mechanism 100 provided by the embodiment of the present invention includes a positioning seat 120 and a movable clamping pin 130 arranged on the positioning seat 120. The movable clamping pin 130 includes a first positioning component 132 and a second positioning component 134. A first positioning block 122 and a second positioning block 124 are arranged on the positioning seat 120. A control component 150 is connected to the first positioning component 132 so that the first positioning pin 1322 of the first positioning component 132 can approach or move away from the first positioning block 122. The control component 150 is also connected to the second positioning component 134 so that the second positioning pin 1342 of the second positioning component 134 can approach or move away from the second positioning block 124. The metal sheet 105 is located in the space jointly enclosed by the first positioning block 122, the first positioning pin 1322, the second positioning block 124, and the second positioning pin 1342. The first positioning block 122 is used to limit the first side of the metal sheet 105, and the second positioning block 124 is used to limit the second side of the metal sheet 105. When the first positioning pin 1322 approaches the first positioning block 122 and the second positioning pin 1342 approaches the second positioning block 124, the clamping and fixing of the metal sheet 105 are realized; when the first positioning pin 1322 moves away from the first positioning block 122 and the second positioning pin 1342 moves away from the second positioning block 124, the free picking and placing of the metal sheet 105 are realized. By adopting the above form, the metal sheet 105 can be positioned with high precision, and then operations such as welding or laser engraving can be carried out on the product, avoiding the deviation of the position of the metal sheet 105 during the product processing. At the same time, the metal sheet clamping mechanism 100 of the present application simplifies the form of clamping and fixing, can reduce the production cost, and improve the stability of clamping the metal sheet 105.

[0040] As Figure 6 shown, the first positioning component 132 includes a first slide rail 1324 arranged on the positioning seat 120, and a first connecting plate 1326 slidably connected to the first slide rail 1324. The first positioning pin 1322 is arranged on the first connecting plate 1326; the second positioning component 134 includes a second slide rail 1344 arranged on the positioning seat 120, and a second connecting plate 1346 slidably connected to the second slide rail 1344. The second positioning pin 1342 is arranged on the second connecting plate 1346. The control component 150 is respectively connected to the first connecting plate 1326 and the second connecting plate 1346.

[0041] Specifically, when it is necessary to clamp the metal sheet 105, the control component 150 is driven to slide the first connecting plate 1326, so as to drive the first positioning pin 1322 on the first connecting plate 1326 to approach the first positioning block 122. At the same time, the second connecting plate 1346 is driven to slide, so as to drive the second positioning pin 1342 on the second connecting plate 1346 to approach the second positioning block 124, so as to clamp the metal sheet 105. By adopting the above form, the control during the clamping of the metal sheet 105 can be simplified, and it is convenient for maintenance and replacement, and the production cost can be better controlled.

[0042] As Figure 7 shown, the control component 150 includes a support frame 151 and a first linear drive 152 provided on the support frame 151. A support plate 153 is provided on the first linear drive 152. A resisting member 1532 and a cam bearing 1534 are provided on the support plate 153. A guiding inclined surface 1328 is provided on the first connecting plate 1326. The cam bearing 1534 can abut against the guiding inclined surface 1328 to push the first connecting plate 1326 to slide along the first slide rail 1324, so that the first positioning pin 1322 approaches the first positioning block 122; the resisting member 1532 can abut against the second connecting plate 1346 to push the second connecting plate 1346 to slide along the second slide rail 1344, so that the second positioning pin 1342 approaches the second positioning block 124.

[0043] Specifically, the first linear drive 152 can be set as any one of a linear motor, a cylinder or a hydraulic cylinder to achieve the required drive control. Through the support plate 153 provided on the first linear drive 152, and the resisting member 1532 and the cam bearing 1534 provided on the support plate 153, when the first linear drive 152 drives the support plate 153 to move, the cam bearing 1534 on the support plate 153 abuts against the guiding inclined surface 1328 on the first connecting plate 1326. At the same time, the resisting member 1532 on the support plate 153 abuts against the second connecting plate 1346. When the cam bearing 1534 abuts against the guiding inclined surface 1328, a component force parallel to the extending direction of the first slide rail 1324 will be generated between the cam bearing 1534 and the guiding inclined surface 1328, so that the first connecting plate 1326 slides along the first slide rail 1324, thereby realizing the required movement form of the first positioning pin 1322 approaching the first positioning block 122. In addition, the resisting member 1532 abuts against the second connecting plate 1346, and this abutting force is parallel to the extending direction of the second slide rail 1344, so that the second connecting plate 1346 slides along the second slide rail 1344, thereby realizing the required movement form of the second positioning pin 1342 approaching the second positioning block 124. So as to realize the clamping and fixing of the metal sheet 105.

[0044] Among them, the abutting member 1532 can be an abutting column provided on the support plate 153, or a protrusion provided on the support plate 153, as long as it can stably abut against the second connecting plate 1346.

[0045] As Figure 4 and Figure 8 As shown, a first elastic member 126 is provided between the first connecting plate 1326 and the positioning seat 120, so that the first positioning pin 1322 has a tendency to move away from the first positioning block 122; a second elastic member 127 is provided between the second connecting plate 1346 and the positioning seat 120, so that the second positioning pin 1342 has a tendency to move away from the second positioning block 124.

[0046] Specifically, the first elastic member 126 can be an elastic rope, a torsion spring, a tension spring or a compression spring provided between the first connecting plate 1326 and the positioning seat 120. When an elastic rope or a tension spring is adopted, fixing points are respectively provided on the positioning seat 120 and the first connecting plate 1326, so that both ends of the elastic rope or the tension spring are respectively connected to the positioning seat 120 and the first connecting plate 1326, thereby making the first positioning pin 1322 have a tendency to move away from the first positioning block 122. When the first elastic member 126 is a torsion spring, a positioning shaft can be provided on the positioning seat 120, the torsion spring body is sleeved on the positioning shaft, and one end of the torsion spring is clamped with the positioning seat 120 and the other end is clamped with the first connecting plate 1326, thereby making the first positioning pin 1322 have a tendency to move away from the first positioning block 122. When the first elastic member 126 is a compression spring, an abutting block can be provided on the positioning seat 120, and both ends of the compression spring are respectively abutted against the abutting block and the first connecting plate 1326, thereby making the first positioning pin 1322 have a tendency to move away from the first positioning block 122. Similarly, the second first elastic member 126 can be an elastic rope, a torsion spring, a tension spring or a compression spring provided between the second connecting plate 1346 and the positioning seat 120, and the setting form is similar to that of the first elastic member 126, which will not be elaborated here.

[0047] In the above form, when the control assembly 150 has no driving force on the first connecting plate 1326 and the second connecting plate 1346, the first connecting plate 1326 can drive the first positioning pin 1322 to move away from the first positioning block 122 under the drive of the first elastic member 126, and the second connecting plate 1346 can drive the second positioning pin 1342 to move away from the second positioning block 124 under the drive of the second elastic member 127. In this way, when it is not necessary to clamp and position the metal sheet 105 through the control assembly 150, the first positioning pin 1322 and the second positioning pin 1342 can automatically move to the positions when not in the clamping and positioning state. When taking and placing the metal sheet 105, it can be directly taken and placed without manual intervention, simplifying the operation mode.

[0048] AsFigure 9 and Figure 10 As shown in Figure 10 , the metal sheet clamping mechanism 100 further includes a magnetic attraction mechanism 140 provided on the positioning seat 120. The magnetic attraction mechanism 140 includes a magnet 142 corresponding to the positioning seat 120 for adsorbing the metal sheet 105 on the positioning seat 120.

[0049] Specifically, after the metal sheet 105 is clamped and positioned by the first positioning block 122, the first positioning pin 1322, the second positioning block 124 and the second positioning pin 1342, the magnetic attraction mechanism 140 can be used to assist in positioning the metal sheet 105. For example, through holes can be provided in the placement area of the metal sheet 105 on the positioning seat 120. After the metal sheet 105 is clamped and positioned, the magnet 142 can be passed through the through holes by the magnetic attraction mechanism 140 and close to the metal sheet 105 to generate a magnetic adsorption force on the metal sheet 105. After the metal sheet 105 is processed, the magnet 142 can be moved away from the metal sheet 105 to facilitate the taking of the metal sheet 105.

[0050] As Figure 9 shown in Figure 9 , the magnetic attraction mechanism 140 further includes a connecting bracket 144 and a magnet mounting seat 146. A linear slide rail 148 is provided on the connecting bracket 144. The magnet mounting seat 146 is slidably connected to the connecting bracket 144 through the linear slide rail 148 to move the magnet 142 closer to or farther away from the positioning seat 120.

[0051] Specifically, the linear slide rail 148 includes a guide rail and a slider that are slidably connected. The guide rail is fixedly connected to the connecting bracket 144, and the magnet mounting seat 146 is fixedly connected to the slider, so that the connecting bracket 144 and the magnet mounting seat 146 are slidably connected. When it is necessary to adsorb the metal sheet 105, the magnet mounting seat 146 is slid to move the magnet 142 closer to the metal sheet 105. When it is not necessary to adsorb the metal sheet 105, the magnet mounting seat 146 is slid to move the magnet 142 away from the metal sheet 105.

[0052] As Figure 7 and Figure 9 shown in Figure 9 and , the control assembly 150 further includes a second linear driving member 154. A clamping member 155 is provided on the second linear driving member 154. A boss 1462 cooperating with the clamping member 155 is correspondingly provided on the magnet mounting seat 146 for driving the magnet mounting seat 146 to move in a direction away from the positioning seat 120. A third elastic member 149 is provided between the connecting bracket 144 and the magnet mounting seat 146. The third elastic member 149 is used to make the magnet mounting seat 146 tend to move in a direction close to the positioning seat 120.

[0053] Specifically, the second linear driving member 154 can be set as any one of a linear motor, a cylinder, or a hydraulic cylinder to achieve the required driving control. Through the engaging member 155 provided on the second linear driving member 154, the magnet mounting seat 146 can be driven to move by the convex platform 1462 that cooperates with the engaging member 155 through the magnet mounting seat 146, and the magnet mounting seat 146 moves in a direction away from the positioning seat 120. When the second linear driving member 154 moves to the state before driving the magnet mounting seat 146 to move, since a third elastic member 149 is provided between the connecting bracket 144 and the magnet mounting seat 146, when the engaging member 155 does not limit the convex platform 1462, the elastic force of the third elastic member 149 causes the magnet mounting seat 146 to move in a direction close to the positioning seat 120. Among them, the third elastic member 149 can adopt a tension spring, an elastic cord, a compression spring, etc., as long as it can make the magnet mounting seat 146 have a tendency to move in a direction close to the positioning seat 120.

[0054] Optionally, as Figure 10 described, there are adjustment gaps between the first positioning block 122 and the second positioning block 124 and the positioning seat 120 respectively. Specifically, grooves can be respectively provided at the positions on the first positioning seat 120 for fixing the first positioning block 122 or the second positioning block 124. The outer circle of the groove is slightly larger than the outer circles of the first positioning block 122 and the second positioning block 124. When positioning the first positioning block 122 or the second positioning block 124, a feeler gauge can be used to determine the locking position of the first positioning block 122 or the second positioning block 124 first. After the positions of the first positioning block 122 or the second positioning block 124 are determined, the feeler gauge can be pulled out. By adopting the above form, the positioning reference can be finely adjusted as needed to meet the actual processing requirements.

[0055] As Figure 6 and Figure 10 shown, a first slot hole 128 and a second slot hole 129 are respectively provided on the positioning seat 120. The length extension direction of the first slot hole 128 faces the first positioning block 122, and the length extension direction of the second slot hole 129 faces the second positioning block 124. The first positioning pin 1322 is disposed through the first slot hole 128, and the second positioning pin 1342 is disposed through the second slot hole 129.

[0056] Specifically, the length extension direction of the first slot 128 is consistent with the extension direction of the first slide rail 1324, so that the first positioning pin 1322 can slide within the first slot 128. Similarly, the length extension direction of the second slot 129 is consistent with the extension direction of the second slide rail 1344, so that the second positioning pin 1342 can slide within the second slot 129. Since the length extension direction of the first slot 128 faces the first positioning block 122, while limiting the first positioning pin 1322, the first positioning pin 1322 can be moved closer to or farther away from the first positioning block 122. The length extension direction of the second slot 129 faces the second positioning block 124, while limiting the second positioning pin 1342, the second positioning pin 1342 can be moved closer to or farther away from the second positioning block 124.

[0057] An embodiment of the present invention also discloses a welding device, including a welding torch and the metal sheet clamping mechanism 100 in the foregoing embodiment. After the fixture 110 of the metal sheet clamping mechanism 100 clamps and positions the metal sheet 105, the metal sheet 105 is welded by the welding torch. This welding device has the same structure and beneficial effects as the metal sheet clamping mechanism 100 in the foregoing embodiment. The structure and beneficial effects of the metal sheet clamping mechanism 100 have been described in detail in the foregoing embodiment and will not be elaborated here.

[0058] The foregoing are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A metal sheet clamping mechanism, characterized in that, it includes a fixture and a control component. The fixture includes a positioning seat and a movable clamping pin arranged on the positioning seat. The movable clamping pin includes a first positioning component and a second positioning component. A first positioning block and a second positioning block are also arranged on the positioning seat. The first positioning component includes a first positioning pin opposite to the first positioning block, and the second positioning component includes a second positioning pin opposite to the second positioning block. The metal sheet is located in the space jointly enclosed by the first positioning block, the first positioning pin, the second positioning block and the second positioning pin. The control component is connected to the first positioning component so that the first positioning pin can approach or move away from the first positioning block. The control component is also connected to the second positioning component so that the second positioning pin can approach or move away from the second positioning block; The first positioning component includes a first slide rail arranged on the positioning seat and a first connecting plate slidably connected to the first slide rail, and the first positioning pin is arranged on the first connecting plate; The second positioning component includes a second slide rail arranged on the positioning seat and a second connecting plate slidably connected to the second slide rail, and the second positioning pin is arranged on the second connecting plate. The control component is respectively connected to the first connecting plate and the second connecting plate; The control component includes a support frame and a first linear driving member arranged on the support frame. A support plate is arranged on the first linear driving member. A resisting member and a cam bearing are arranged on the support plate. A guiding inclined surface is arranged on the first connecting plate. The cam bearing can abut against the guiding inclined surface to push the first connecting plate to slide along the first slide rail so that the first positioning pin approaches the first positioning block; The resisting member can abut against the second connecting plate to push the second connecting plate to slide along the second slide rail so that the second positioning pin approaches the second positioning block.

2. The metal sheet clamping mechanism according to claim 1, characterized in that, a first elastic member is arranged between the first connecting plate and the positioning seat so that the first positioning pin has a tendency to move away from the first positioning block; A second elastic member is arranged between the second connecting plate and the positioning seat so that the second positioning pin has a tendency to move away from the second positioning block.

3. The metal sheet clamping mechanism according to claim 1 or 2, characterized in that, the metal sheet clamping mechanism further includes a magnetic attraction mechanism arranged on the positioning seat. The magnetic attraction mechanism includes a magnet corresponding to the positioning seat for adsorbing the metal sheet on the positioning seat.

4. The metal sheet clamping mechanism according to claim 3, characterized in that, the magnetic attraction mechanism further includes a connecting bracket and a magnet mounting seat. The connecting bracket is connected to the positioning seat. A linear slide rail is arranged on the connecting bracket. The magnet mounting seat is slidably connected to the connecting bracket through the linear slide rail so that the magnet approaches or moves away from the positioning seat.

5. The metal sheet clamping mechanism according to claim 4, It is characterized in that the control component further includes a second linear driving member, a clamping member is arranged on the second linear driving member, a convex platform cooperating with the clamping member is correspondingly arranged on the magnet mounting seat for driving the magnet mounting seat to move away from the positioning seat, and a third elastic member is arranged between the connecting bracket and the magnet mounting seat, and the third elastic member is used to make the magnet mounting seat have a tendency to move towards the positioning seat.

6. The metal sheet clamping mechanism according to claim 1 or 2, It is characterized in that there are adjusting gaps between the first positioning block and the second positioning block and the positioning seat respectively.

7. The metal sheet clamping mechanism according to claim 1 or 2, It is characterized in that a first slot and a second slot are respectively arranged on the positioning seat, the length extension direction of the first slot faces the first positioning block, the length extension direction of the second slot faces the second positioning block, the first positioning pin is arranged through the first slot, and the second positioning pin is arranged through the second slot.

8. A welding device, It is characterized in that it includes a welding torch and the metal sheet clamping mechanism according to any one of claims 1-7, and the welding torch is cooperatively connected with the fixture of the metal sheet clamping mechanism.

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