Automatic spot welding machine for metal plates

Abstract

The utility model relates to the technical field of automatic welding devices, in particular to an automatic sheet metal spot welding machine which comprises a movable spot welding platform, a movable structure, a positioning structure, a clamp structure and a spot welding machine body. The movable structure is arranged on the movable spot welding platform; the positioning structure is arranged on the movable spot welding platform; the clamp structure is arranged on the moving structure and can move along with the moving structure. The clamp structure comprises a positioning unit and a clamping unit. The positioning unit can be matched with the positioning structure so as to position the workpiece; the clamping unit is used for clamping the positioned workpiece; the spot welding machine is located above the movable spot welding platform and used for conducting spot welding on the workpiece which is moved to the spot welding position through the clamp structure. According to the automatic spot welding machine for the metal plate, positioning, clamping and spot welding of the workpiece can be achieved only by carrying the workpiece to the movable spot welding platform, manual spot welding is not needed, spot welding missing is avoided, and the spot welding quality is improved; the labor intensity is reduced and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to automatic welding device technical field especially relates to a sheet metal automatic spot welding machine. BACKGROUND

[0002] In the spot welding process of numerical control machine tool sheet metal workpiece, spot welding efficiency and spot welding quality are particularly important. The existing welding machine is platform spot welding machine and vertical spot welding machine, when welding sheet metal workpiece, generally need to place workpiece on the lower electrode platform manually, and spot welding is carried out. If the sheet metal workpiece is larger, it is necessary to move the workpiece and then spot welding, this welding method not only increases the labor intensity of personnel, and the operation process is complicated, manual spot welding is easy to cause missed spot welding, and affects the welding quality.

[0003] Therefore, the existing platform spot welding machine and vertical spot welding machine have the following disadvantages:

[0004] 1. Manual spot welding is easy to cause missed spot welding, and affects the welding quality of sheet metal workpiece;

[0005] 2. Repeatedly carrying and moving workpiece, the labor intensity of personnel is high, and the processing efficiency is affected. INVENTION CONTENTS

[0006] The utility model provides a sheet metal automatic spot welding machine to solve the defect that manual spot welding exists in prior art, missed spot welding is easy to cause, the welding quality of sheet metal workpiece is affected, and the labor intensity of personnel is high, and the processing efficiency is affected.

[0007] The utility model provides a sheet metal automatic spot welding machine, which comprises:

[0008] The moving spot welding platform can move in the first direction;

[0009] The moving structure is arranged on the moving spot welding platform and can move with the moving spot welding platform in the first direction, and the moving structure can move in the second direction;

[0010] The positioning structure is arranged on the moving spot welding platform;

[0011] The clamp structure is arranged on the moving structure and can move with the moving spot welding platform in the first direction and move with the moving structure in the second direction, and the clamp structure comprises:

[0012] The positioning unit can cooperate with the positioning structure to position the workpiece;

[0013] The clamping unit is used for clamping the positioned workpiece;

[0014] The spot welding machine is located above the moving spot welding platform and is used for spot welding the workpiece moved to the spot welding position by the clamp structure.

[0015] The utility model provides a metal plate automatic spot welding machine, the mobile spot welding platform includes:

[0016] Base;

[0017] Y axis mobile unit, along Y axis movably be located on the base;

[0018] Brush spot welding platform, be located on the Y axis mobile unit, the positioning structure is located on the brush spot welding platform.

[0019] The utility model provides a metal plate automatic spot welding machine, the mobile structure includes:

[0020] Guide rail, along X axle direction be located on the brush spot welding platform;

[0021] X axis mobile unit, along X axle movably be located on the guide rail, the clamp structure is located on the X axis mobile unit.

[0022] The utility model provides a metal plate automatic spot welding machine, the positioning structure includes:

[0023] First base, fixed at the bottom of mobile spot welding platform;

[0024] First drive unit, be located on the first base;

[0025] Positioning rod, one end with the movable end of first drive unit is connected;

[0026] First positioning block, with the other end of positioning rod is connected;

[0027] When the first drive unit drives the positioning rod and the first positioning block eject, through the positioning rod with the positioning unit cooperation, to the workpiece positioning.

[0028] The utility model provides a metal plate automatic spot welding machine, the positioning unit includes:

[0029] Second base, be located on the mobile structure;

[0030] Second positioning block, be located on the second base, and the direction of positioning structure is set to.

[0031] The utility model provides a metal plate automatic spot welding machine, the clamping unit includes:

[0032] Second drive unit, be located on the second base;

[0033] Press head, with the movable end of second drive unit is connected, and the press head with the extension end opposite of second base, for clamping workpiece.

[0034] According to the sheet metal automatic spot welding machine, the clamping unit further comprises:

[0035] A guide rod is arranged on the second base and passes through the pressing head to define the moving direction of the pressing head.

[0036] According to the sheet metal automatic spot welding machine, the side of the pressing head close to the second base is formed with a sawtooth surface, and the protruding end of the second base is formed with a sawtooth surface.

[0037] According to the sheet metal automatic spot welding machine, the clamp structure further comprises:

[0038] A clamp lifting support plate is arranged below the clamp lifting support plate.

[0039] A follow-up seat is arranged below the clamp lifting support plate, the follow-up seat is provided with a floating guide column and an elastic connecting piece, the lower end of the floating guide column is fixed to the second base, the upper end of the floating guide column is connected to the clamp lifting support plate, the follow-up seat is connected to the second base through the floating guide column, the elastic connecting piece is used to provide the support force for the up-and-down floating of the second base, and the floating guide column is used to support the second base and define the floating direction of the second base.

[0040] According to the sheet metal automatic spot welding machine, a plurality of clamp structures are arranged along the second direction of the moving structure.

[0041] The sheet metal automatic spot welding machine comprises a moving spot welding platform, a moving structure, a positioning structure, a clamp structure and a spot welding machine. The moving spot welding platform can move along a first direction. The moving structure is arranged on the moving spot welding platform and can move along the first direction with the moving spot welding platform. The moving structure can move along a second direction. The positioning structure is arranged on the moving spot welding platform. The clamp structure is arranged on the moving structure and can move along the first direction with the moving spot welding platform and along the second direction with the moving structure. The clamp structure comprises a positioning unit and a clamping unit. The positioning unit can cooperate with the positioning structure to position a workpiece. The clamping unit is used to clamp the positioned workpiece. The spot welding machine is arranged above the moving spot welding platform and is used to spot weld the workpiece moved to a spot welding position by the clamp structure. The sheet metal automatic spot welding machine provided by the utility model only needs to carry the workpiece to the moving spot welding platform, can realize workpiece positioning, clamping and spot welding, does not need manual spot welding, avoids missed spot welding, improves spot welding quality, reduces manual labor intensity and improves work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0043] Figure 1 is a structural schematic view of the sheet metal automatic spot welding machine provided in one of the embodiments of the present application.

[0044] Figure 2 is a side view of the sheet metal automatic spot welding machine provided in one of the embodiments of the present application.

[0045] Figure 3 is a structural schematic view of the clamp structure provided in one of the embodiments of the present application.

[0046] Figure 4 is a structural schematic view of the clamp structure provided in one of the embodiments of the present application.

[0047] Figure 5 is a side view of the clamp structure provided in one of the embodiments of the present application.

[0048] Figure 6 is Figure 5 a partial schematic view of A in the figure.

[0049] Figure 7 is a structural schematic view of the positioning structure provided in one of the embodiments of the present application.

[0050] Reference signs:

[0051] 101: base; 102: Y-axis moving unit; 103: brush spot welding platform; 201: guide rail: moving structure; 202: X-axis moving unit; 3: positioning structure; 301: first base; 302: first driving unit; 303: positioning rod; 304: first positioning block; 4: clamp structure; 401: second base; 402: second positioning block; 403: second driving unit; 404: pressure head; 405: guide rod; 406: follow-up seat; 407: floating guide column; 408: elastic connecting piece; 409: clamp lifting support plate; 5: spot welding machine; 501: lower electrode; 502: upper electrode. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0053] In the description of the present embodiment, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present embodiment and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present embodiment.

[0054] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present embodiment, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0055] In the present embodiment, unless otherwise specifically defined and limited, the terms "arrangement", "installation", "connection", "connection", "fixation" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present embodiment can be understood according to the specific circumstances.

[0056] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0057] The following will be described in detail Figures 1-7 A sheet metal automatic spot welding machine is described in the present application. The sheet metal automatic spot welding machine comprises: a moving spot welding platform, a moving structure, a positioning structure 3, a clamp structure 4 and a spot welding machine 5.

[0058] Among them, the moving spot welding platform can move along the first direction; the moving structure is arranged on the moving spot welding platform and can move along the first direction with the moving spot welding platform, and the moving structure can move along the second direction; the positioning structure 3 is arranged on the moving spot welding platform; the clamp structure 4 is arranged on the moving structure and can move along the first direction with the moving spot welding platform and along the second direction with the moving structure, and the clamp structure 4 comprises: a positioning unit and a clamping unit; the positioning unit can cooperate with the positioning structure 3 to position the workpiece; the clamping unit is used for clamping the positioned workpiece; the spot welding machine 5 is located above the moving spot welding platform and is used for spot welding the workpiece moved to the spot welding position by the clamp structure 4.

[0059] It should be understood that the first direction and the second direction are non-parallel, preferably, the first direction and the second direction are perpendicular, that is, a coordinate system is established with perpendicular XY axes, the first direction is the Y axis direction, and the second direction is the X axis direction, that is, as shown in the X axis direction and the Y axis direction, the following embodiments are developed in the X and Y axis directions. Figure 1

[0060] The moving spot welding platform can move along the Y axis and drive the moving structure, the positioning structure 3 and the clamp structure 4 on it to move synchronously along the Y axis; the moving structure can move along the X axis and drive the positioning structure 3 on it to move synchronously along the X axis, thereby forming a clamp structure 4 with X axis and Y axis movement.

[0061] The positioning structure 3 is located on the moving spot welding platform and is used for positioning the workpiece before clamping the workpiece. Specifically, the clamp structure 4 has a positioning unit, and the workpiece is tightly positioned between the positioning unit and the positioning structure 3 through the cooperation of the positioning unit and the positioning structure 3.

[0062] ​The clamp structure 4 has a clamping unit, and the clamped workpiece is moved to a designated spot welding position through the movement of the spot welding platform and the movement structure and the driving of the workpiece by the clamp structure 4. The lower electrode 501 is pushed out upward and tightly contacts the bottom surface of the workpiece, the upper electrode 502 is pushed out downward and tightly presses the workpiece, the spot welding machine 5 is powered on for welding, the upper electrode 502 is retracted after the welding is completed, and a spot welding process is completed.

[0063] Through the above process, the workpieces in a certain range can be sequentially spot welded, and the work efficiency is improved.

[0064] It can be seen that the sheet metal automatic spot welding machine provided by the utility model only needs to carry the workpiece to the movable spot welding platform, and can realize workpiece positioning, clamping and spot welding without manual spot welding, so as to avoid missed spot welding and improve spot welding quality, reduce manual labor intensity and improve work efficiency.

[0065] The utility model can be used for spot welding of the bent sheet metal workpiece, the distance between the upper electrode 502 and the lower electrode 501 is 160mm, the clamp structure 4 can clamp the workpiece with a bent and turned edge height lower than 160mm, so the spot welding can also be carried out for part of the bent workpiece, and the range of the spot welding workpiece is expanded. The equipment stroke of the utility model is 1600*1100, and the smallest workpiece that can be processed is 300mm*300mm.

[0066] The utility model provides a kind of sheet metal automatic spot welding machine, it includes: movable spot welding platform, movement structure, positioning structure 3, clamp structure 4 and spot welding machine 5. Movable spot welding platform can move along first direction;Movement structure is located on movable spot welding platform, and can move along first direction with movable spot welding platform, and movement structure can move along second direction;Positioning structure 3 is located on movable spot welding platform;Clamp structure 4 is located in movement structure and can move along first direction with movable spot welding platform and move along second direction with movement structure, and clamp structure 4 includes: positioning unit and clamping unit;Positioning unit can cooperate with positioning structure 3 to position workpiece;Clamping unit is used to clamp the workpiece after positioning;Spot welding machine 5 is located above movable spot welding platform, and is used to spot weld workpiece moved to spot welding position by clamp structure 4.The utility model provides a kind of sheet metal automatic spot welding machine, only needs to carry workpiece to movable spot welding platform, can realize workpiece positioning, clamping and spot welding, without manual spot welding, avoid missed spot welding, improve spot welding quality;Reduce manual labor intensity, improve work efficiency.

[0067] In one of the embodiments of the utility model, the mobile spot welding platform comprises: base 101, Y axis mobile unit 102 and brush spot welding platform 103. Wherein, Y axis mobile unit 102 is movably arranged on base 101 along Y axis;Brush spot welding platform 103 is arranged on Y axis mobile unit 102, and positioning structure 3 is arranged on brush spot welding platform 103. Specifically, base 101 is the support structure of the whole device, Y axis mobile unit 102 can be a mobile platform, which preferably adopts servo motor drive and adopts rack and pinion transmission to move along Y axis, and brush spot welding platform 103 moves along Y axis under the drive of Y axis mobile unit 102.

[0068] In one of the embodiments of the utility model, the mobile structure comprises: guide rail 201 and X axis mobile unit 202. Wherein, guide rail 201 is arranged on brush spot welding platform 103 along X axis direction;X axis mobile unit 202 is movably arranged on guide rail 201 along X axis, and clamp structure 4 is arranged on X axis mobile unit 202. Specifically, guide rail 201 is arranged on brush spot welding platform 103, and X axis mobile unit 202 can be a mobile platform, which preferably adopts servo motor drive and adopts rack and pinion transmission to move along X axis, and clamp structure 4 moves along X axis under the drive of X axis mobile unit 202.

[0069] It can be understood that clamp structure 4 can move along X axis and Y axis under the drive of the above-mentioned mobile spot welding platform and mobile structure.

[0070] In one of the embodiments of the utility model, positioning structure 3 comprises: first base 301, first drive unit 302, positioning rod 303 and first positioning block 304. Wherein, first base 301 is fixed at the bottom of mobile spot welding platform;First drive unit 302 is arranged on first base 301;One end of positioning rod 303 is connected with the movable end of first drive unit 302;First positioning block 304 is connected with the other end of positioning rod 303. When first drive unit 302 drives positioning rod 303 and first positioning block 304 to pop up, positioning rod 303 cooperates with positioning unit to position workpiece. Specifically, first drive unit 302 can adopt a pneumatic cylinder and be installed in first base 301, and the pneumatic cylinder can drive positioning rod 303 and first positioning block 304 to lift up. When workpiece is carried to mobile spot welding platform, the pneumatic cylinder lifts up positioning rod 303 and first positioning block 304, and positioning rod 303 cooperates with positioning unit to form the positioning of multiple workpieces, and one side of workpiece abuts against positioning rod 303, and the other side abuts against positioning unit.

[0071] In one of the embodiments of the utility model, the positioning unit comprises: second base 401 and second positioning block 402. Among them, second base 401 is located on the moving structure;Second positioning block 402 is located on second base 401, and is arranged towards the direction of positioning structure 3. Specifically, second positioning block 402 is located at the end of second base 401, and has a vertical face, and the side of the vertical face is positioned to the workpiece, and the other side is positioned by positioning rod 303.

[0072] In one of the embodiments of the utility model, the clamping unit comprises: second drive unit 403 and pressure head 404. Among them, second drive unit 403 is located on second base 401;Pressure head 404 is connected with the movable end of second drive unit 403, and the pressure head 404 is opposite to the protruding end of second base 401, and is used for clamping the workpiece. Specifically, second drive unit 403 can adopt a cylinder, and the pressure head 404 is driven to move up and down, and when the pressure head 404 descends, it cooperates with the protruding end of second base 401 to clamp the workpiece. Preferably, the protruding end of second base 401 is a pressing plate structure, which cooperates with pressure head 404 to clamp the workpiece.

[0073] In one of the embodiments of the utility model, the clamping unit further comprises: guide rod 405, one end of which is located on second base 401, and the other end passes through pressure head 404, for limiting the moving direction of pressure head 404. Specifically, two guide rods 405 are arranged, and are respectively located on the two sides of second drive unit 403, and the lifting direction of pressure head 404 is limited by guide rod 405, so that the pressure head 404 is prevented from deviating during lifting. It can be understood that the pressure head 404 is formed with a through hole for the guide rod 405 to pass through.

[0074] In one of the embodiments of the utility model, the pressure head 404 adopts a bent plate structure, and the end of the bent plate structure is used as the part for clamping the workpiece, and the other end is connected with the second drive unit 403 and the guide rod 405.

[0075] In one of the embodiments of the utility model, the side of pressure head 404 close to second base 401 is formed with a sawtooth surface, and the protruding end of second base 401 is formed with a sawtooth surface. In this embodiment, the sawtooth surface arranged on the pressure head 404 and the second base 401 has better clamping effect.

[0076] In one of the embodiments of the utility model, the clamp structure 4 further comprises: a follow-up seat 406 and a clamp lifting support plate 409. The follow-up seat 406 is clamped on the X-axis moving unit 202 and moves under the drive of the X-axis moving unit 202. The follow-up seat 406 is located below the clamp lifting support plate 409, the follow-up seat 406 is internally provided with a floating guide column 407 and an elastic connecting piece 408, the lower end of the floating guide column 407 is fixed with the second base 401, the upper end of the floating guide column 407 is connected with the clamp lifting support plate 409, the follow-up seat 406 is floatingly connected with the second base 401 through the floating guide column 407, the elastic connecting piece 408 is used for providing the support force for the up-and-down floating of the second base 401, the floating guide column 407 is used for supporting the second base 401 and limiting the floating direction of the second base 401. When clamping the workpiece, the second base 401 can be up-and-down floating through the floating guide column 407, and the workpiece can be up-and-down floating, so that the deformation of the workpiece when the welding position is close to the pressing plate is ensured; the floating guide column 407 is used for supporting the second base 401 and limiting the second base 401, the lower end is fixed on the second base 401, and the upper end is fixed with the clamp lifting support plate 409; other parts are inserted into the follow-up seat 406, and the floating guide column 407 is movably arranged in the follow-up seat 406; when the second base 401 is floating, the elastic connecting piece 408 provides the floating space.

[0077] Further, the elastic connecting piece 408 is composed of a bolt and a spring, one end of the bolt is fixedly connected with the second base 401, the other end is sleeved into the spring and movably arranged in the follow-up seat 406, so that the floating connection of the follow-up seat 406 and the second base 401 is realized.

[0078] In one of the embodiments of the utility model, a plurality of clamp structures 4 are arranged along the second direction of the moving structure. Preferably, two clamp structures 4 are arranged on the moving structure along the X direction.

[0079] Finally, it should be noted that: the above embodiments are only used to illustrate the technical scheme of the utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the spirit and scope of the technical scheme of the embodiments of the utility model.

Claims

1. A sheet metal automated spot welder characterized by, The utility model relates to a mobile spot welding platform, which can move along a first direction, a mobile structure is arranged on the mobile spot welding platform and can move along the first direction with the mobile spot welding platform, the mobile structure can move along a second direction, a positioning structure (3) is arranged on the mobile spot welding platform, a clamp structure (4) is arranged on the mobile structure and can move along the first direction with the mobile spot welding platform and move along the second direction with the mobile structure, the clamp structure (4) comprises a positioning unit which can cooperate with the positioning structure (3) to position a workpiece, a clamping unit for clamping the positioned workpiece, and a spot welding machine (5) located above the mobile spot welding platform for spot welding the workpiece moved to a spot welding position by the clamp structure (4). The mobile spot welding platform comprises a base (101), a Y-axis moving unit (102) movably arranged on the base (101) along a Y-axis, and a brush spot welding platform (103) arranged on the Y-axis moving unit (102), wherein the positioning structure (3) is arranged on the brush spot welding platform (103). The mobile structure comprises a guide rail (201) arranged on the brush spot welding platform (103) along an X-axis direction, and an X-axis moving unit (202) movably arranged on the guide rail (201) along the X-axis, wherein the clamp structure (4) is arranged on the X-axis moving unit (202). The positioning structure (3) comprises a first base (301) fixed at the bottom of the mobile spot welding platform, a first driving unit (302) arranged on the first base (301), a positioning rod (303) connected at one end to the movable end of the first driving unit (302), and a first positioning block (304) connected at the other end of the positioning rod (303), wherein the first driving unit (302) drives the positioning rod (303) and the first positioning block (304) to protrude, and the positioning rod (303) and the first positioning block (304) cooperate to position the workpiece. The positioning unit comprises a second base (401) arranged on the mobile structure, and a second positioning block (402) arranged on the second base (401) and arranged towards the positioning structure (3). The clamping unit comprises a second driving unit (403) arranged on the second base (401), and a pressure head (404) connected at the movable end of the second driving unit (403) and opposite to the protruding end of the second base (401), for clamping the workpiece. The clamping unit further comprises a guide rod (405) arranged at one end on the second base (401) and at the other end through the pressure head (404), for limiting the movement direction of the pressure head (404). The side of the pressure head (404) close to the second base (401) is formed with a sawtooth surface, and the protruding end of the second base (401) is formed with a sawtooth surface.

2. The sheet metal automated spot welder of claim 1, wherein, The clamp structure (4) further comprises a clamp lifting support plate (409). ​ ​ ​ 3. The sheet metal automated spot welder of claim 2, wherein, ​ ​ ​ 4. The metal sheet automated spot welder according to claim 1, wherein, ​ ​ ​ ​ ​ ​ 5. The metal sheet automated spot welder according to claim 1, wherein, ​ ​ ​ 6. The metal sheet automated spot welder according to claim 5, wherein, ​ ​ ​ 7. The metal sheet automated spot welder according to claim 6, wherein, ​ ​ 8. The metal sheet automated spot welder according to claim 6, wherein, ​ 9. The metal sheet automated spot welder according to claim 5, wherein, ​ ​ A follow-up seat (406) is located below the clamp lifting support plate (409), a floating guide column (407) and an elastic connecting piece (408) are arranged in the follow-up seat (406), the lower end of the floating guide column (407) is fixed with the second base (401), the upper end of the floating guide column (407) is connected with the clamp lifting support plate (409), the follow-up seat (406) is floatingly connected with the second base (401) through the floating guide column (407), the elastic connecting piece (408) is used for providing a support force for the up and down floating of the second base (401), and the floating guide column (407) is used for supporting the second base (401) and limiting the floating direction of the second base (401).

10. The metal sheet automated spot welder according to any one of claims 1 to 9, wherein A plurality of clamp structures (4) are arranged along the second direction of the moving structure.

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