Auxiliary clamping and positioning structure of welding machine

Abstract

The utility model provides an auxiliary clamping and positioning structure of a welding machine, which comprises a welding machine body, and the auxiliary clamping and positioning structure comprises a horizontal support frame, a vertical support frame, a clamping mechanism and a positioning mechanism, and the horizontal support frame is connected with the welding machine body through a connecting piece; the sliding seat is connected with the horizontal supporting frame in a sliding mode, the horizontal supporting frame is provided with a driving piece, a lower clamping plate is arranged under the upper clamping plate in parallel, and the lower clamping plate is fixedly connected with the limiting rod. The upper clamping plate moves downwards on the periphery of the limiting rod to be matched with the lower clamping plate to clamp a workpiece, the sliding base is driven to move along the horizontal supporting frame under the action of the driving piece, then the workpiece is driven to move to the position between the upper electrode and the lower electrode, the traditional handheld workpiece welding mode is changed, the stability of the workpiece in the welding process is improved, and the welding efficiency is improved. And errors of the welding machine body on workpiece welding points are reduced.

Description

Technical Field

[0001] This utility model relates to the field of welding machine technology, and in particular to an auxiliary clamping and positioning structure for a welding machine. Background Technology

[0002] Welding machines include foot-operated spot welding machines, which are devices that control the welding process through foot operation and are suitable for various welding applications requiring precise positioning and complex shapes.

[0003] When using a spot welding machine, the workers stack the workpieces to be welded together, place the workpieces between the upper and lower electrodes, and step on the spot welding machine pedal. The upper and lower electrodes then spot weld the workpieces. The manual feeding method used during operation results in insufficient stability in clamping the workpieces, leading to larger errors in the welding points. Utility Model Content

[0004] The purpose of this utility model is to provide an auxiliary clamping and positioning structure for a welding machine, which solves the problem that the error of the welding point of the workpiece is increased due to the insufficient stability of the hand clamping the workpiece when the spot welding machine adopts the manual hand-held feeding method.

[0005] This utility model provides an auxiliary clamping and positioning structure for a welding machine, including a welding machine body, wherein the auxiliary clamping and positioning structure includes:

[0006] A horizontal support frame, which is connected to the welding machine body via a connector;

[0007] A sliding seat is slidably connected to the horizontal support frame. The top surface of the sliding seat has evenly distributed threaded holes. The horizontal support frame is equipped with a driving member, which is used to drive the sliding seat to move horizontally along the horizontal support frame.

[0008] A limiting rod, the bottom end of which is threadedly connected to the threaded hole, and an upper clamping plate is slidably connected to the outer periphery of the limiting rod, the upper clamping plate being connected to the limiting rod via a positioning pin;

[0009] A lower clamping plate is arranged parallel to the upper clamping plate directly below it, and the lower clamping plate is fixedly connected to the limiting rod.

[0010] The upper clamping plate and the lower clamping plate are used to clamp the workpieces that need to be welded.

[0011] Preferably, the driving element includes:

[0012] A drive shaft is connected to the horizontal support frame via bearings, and a handwheel is provided at the input end of the drive shaft;

[0013] A sliding sleeve is connected to the outer circumference of the drive shaft by an internal thread, and the outer circumference of the sliding sleeve is connected to the sliding seat.

[0014] Preferably, the connector includes:

[0015] The U-shaped frame has a U-shaped groove that is plugged into the welding machine body, and the side of the U-shaped frame away from the welding machine body is connected to the horizontal support frame.

[0016] The guide slide rail is fixedly connected to the welding machine body and slidably connected to the U-shaped frame;

[0017] The guide rail is equipped with a fixing pin, and the U-shaped frame is connected to the horizontal support frame through the fixing pin.

[0018] Preferably, the guide rail has evenly distributed slots on the side away from the welding machine body, and the slots are adapted to the fixing pins.

[0019] Preferably, the upper clamping plate and the lower clamping plate are provided with a workpiece rotating assembly, which is used for rotating and welding the disc-shaped workpiece;

[0020] The workpiece rotation assembly includes:

[0021] A connecting rod, which is connected to the upper clamping plate via a bearing, and a first top plate is disposed at the bottom end of the connecting rod;

[0022] The driven rod is threadedly connected to the lower clamping plate, and a second top plate is rotatably connected to the top end of the driven rod;

[0023] The top surface of the second top plate corresponds to the bottom surface of the first top plate.

[0024] Preferably, the top surface of the second top plate and the bottom surface of the first top plate are both processed with anti-slip texture.

[0025] Preferably, the driven rod has an internal hexagonal groove at its top end.

[0026] Preferably, the outer periphery of the second top plate is provided with a groove.

[0027] Preferably, a knob is fixedly connected to the top end of the connecting rod.

[0028] Preferably, a locking element is disposed on the outer periphery of the connecting rod, the locking element being used to restrict the rotation of the connecting rod;

[0029] The locking element includes:

[0030] A circular tube is located on the outer periphery of the connecting rod, and the bottom end of the circular tube is connected to the upper clamping plate. The circular tube is connected to the connecting rod by bolts.

[0031] This utility model provides an auxiliary clamping and positioning structure for a welding machine:

[0032] By using the horizontal support frame, sliding seat, driving component, connecting component, limiting rod, upper clamping plate, and lower clamping plate in conjunction, the workpiece to be welded is placed between the lower clamping plate and the upper clamping plate. The upper clamping plate moves downward around the outer periphery of the limiting rod to clamp the workpiece in conjunction with the lower clamping plate. Under the action of the driving component, the sliding seat moves along the horizontal support frame, thereby moving the workpiece between the upper electrode and the lower electrode. By stepping on the pedal of the welding machine body, the workpiece is welded, changing the traditional hand-held workpiece welding method, increasing the stability of the workpiece during the welding process, and reducing the error of the welding machine body at the welding point of the workpiece. Attached Figure Description

[0033] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of this utility model;

[0035] Figure 2 This is a structural diagram of the horizontal support frame, sliding seat, threaded hole, limiting rod, upper clamping plate, and lower clamping plate in this utility model.

[0036] Figure 3 This is a structural diagram of the U-shaped frame, guide rail, and fixing pin in this utility model;

[0037] Figure 4 This is a schematic diagram of the upper and lower clamping plates clamping the workpiece in this utility model;

[0038] Figure 5 This is a schematic diagram of the structure of the drive shaft, handwheel, and sliding sleeve in this utility model;

[0039] Figure 6 This is a schematic diagram of the structure of the connecting rod, the first top plate, the knob, the driven rod, and the second top plate in this utility model.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1-Welding machine body, 2-Horizontal support frame, 21-Sliding seat, 21a-Threaded hole, 22-Drive component, 221-Transmission shaft, 221a-Handwheel, 222-Sliding sleeve, 3-Connecting component, 31-U-shaped frame, 32-Guide slide rail, 321-Fixing pin, 322-Slot, 4-Limiting rod, 41-Upper clamping plate, 41a-Positioning pin, 42-Lower clamping plate, 5-Workpiece rotating assembly, 51-Connecting rod, 511-First top plate, 512-Knob, 52-Driven rod, 521-Second top plate, 521a-Groove, 53-Locking component, 531-Round tube, 532-Bolt. Detailed Implementation

[0042] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0043] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0044] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] In this embodiment, as Figure 1 and Figure 2As shown, an auxiliary clamping and positioning structure for a welding machine includes a welding machine body 1. The auxiliary clamping and positioning structure includes: a horizontal support frame 2, which is connected to the welding machine body 1 via a connector 3; a sliding seat 21, which is slidably connected to the horizontal support frame 2, with threaded holes 21a evenly distributed on the top surface of the sliding seat 21; a driving member 22, which drives the sliding seat 21 to move horizontally along the horizontal support frame 2; a limiting rod 4, the bottom end of which is internally threaded to the threaded hole 21a; an upper clamping plate 41, which is slidably connected to the outer periphery of the limiting rod 4, and is connected to the limiting rod 4 via a positioning pin 41a; a lower clamping plate 42, which is parallel to the upper clamping plate 41 and fixedly connected to the limiting rod 4; and the upper clamping plate 41 and the lower clamping plate 42, which are used to clamp the workpiece to be welded.

[0046] Therefore, the workpiece to be welded is placed between the lower clamping plate 42 and the upper clamping plate 41. The upper clamping plate 41 moves downward around the outer periphery of the limiting rod 4 to cooperate with the lower clamping plate 42 to clamp the workpiece. The position of the upper clamping plate 41 is fixed by the positioning pin 41a. Under the action of the driving component 22, the sliding seat 21 is driven to move along the horizontal support frame 2. Then, the upper clamping plate 41 and the lower clamping plate 42 drive the workpiece to move between the upper electrode and the lower electrode. The workpiece is welded by stepping on the pedal of the welding machine body 1, which changes the traditional hand-held workpiece welding method and increases the stability of the workpiece during the welding process.

[0047] Specifically, the welding machine body 1 is a foot-operated spot welding machine. The welding machine body 1 is a technology known to those skilled in the art and will not be described in detail. The sliding seat 21 is embedded in the groove of the horizontal support frame 2. The horizontal support frame 2 is used to constrain the lateral movement of the sliding seat 21. The threaded hole 21a is used to connect with the limiting rod 4. A thread that matches the threaded hole 21a is machined at the bottom end of the limiting rod 4. A protrusion is machined on the edge of the limiting rod 4 to constrain the vertical movement of the upper clamping plate 41. The upper clamping plate 41 and the lower clamping plate 42 are used to clamp the workpiece to carry the workpiece into the space between the upper electrode and the lower electrode of the welding machine body 1 for welding.

[0048] It should be noted that there are multiple threaded holes 21a. Depending on the welding position and size of the workpiece, the limiting rod 4 is connected to different threaded holes 21a to assist in the welding of the workpiece.

[0049] In some embodiments, such as Figure 2 and Figure 5 As shown, the drive component 22 includes: a drive shaft 221, which is connected to the horizontal support frame 2 via a bearing, and a handwheel 221a is provided at the input end of the drive shaft 221; and a sliding sleeve 222, which is internally threaded to the outer circumference of the drive shaft 221, and the outer circumference of the sliding sleeve 222 is connected to the sliding seat 21.

[0050] Specifically, the outer circumference of the drive shaft 221 is threaded, the handwheel 221a is used to drive the drive shaft 221 to rotate, and the sliding sleeve 222 is used to carry the sliding seat 21 to move in the horizontal support frame 2.

[0051] In addition, the handwheel 221a is replaced by an electric motor, using a different power source to power the rotation of the drive shaft 221.

[0052] In some embodiments, such as Figure 3 As shown, the connector 3 includes: a U-shaped frame 31, the U-shaped groove of which is inserted into and connected to the welding machine body 1, and the side of the U-shaped frame 31 away from the welding machine body 1 is connected to the horizontal support frame 2; a guide rail 32, which is fixedly connected to the welding machine body 1 and slidably connected to the U-shaped frame 31; the guide rail 32 is equipped with a fixing pin 321, and the U-shaped frame 31 is connected to the horizontal support frame 2 through the fixing pin 321;

[0053] Specifically, the U-shaped groove of the U-shaped frame 31 is adapted to the outer periphery of the welding machine body 1. The U-shaped frame 31 carries the horizontal support frame 2 to move and increase the working height of the horizontal support frame 2. The guide rail 32 is used to limit the movement of the U-shaped frame 31. The outer wall of the fixing pin 321 is machined with threads. The fixing pin 321 is used to fix the position of the U-shaped frame 31 on the outer wall of the guide rail 32.

[0054] In some embodiments, such as Figure 3 As shown, the guide rail 32 has evenly distributed slots 322 on the side away from the welding machine body 1, and the slots 322 are adapted to the fixing pins 321.

[0055] Specifically, the slots 322 are evenly distributed based on the guide rails 32, and the fixing pins 321 are connected to different slots 322 to change the position of the U-shaped frame 31 on the outer periphery of the guide rails 32.

[0056] In some embodiments, such as Figure 1 and Figure 6 As shown, a workpiece rotating assembly 5 is disposed in the upper clamping plate 41 and the lower clamping plate 42. The workpiece rotating assembly 5 is used for rotating and welding a disc-shaped workpiece. The workpiece rotating assembly 5 includes: a connecting rod 51, which is connected to the upper clamping plate 41 through a bearing, and a first top plate 511 is disposed at the bottom end of the connecting rod 51; a driven rod 52, which is threadedly connected to the lower clamping plate 42, and a second top plate 521 is rotatably connected to the top end of the driven rod 52; the top surface of the second top plate 521 corresponds to the bottom surface of the first top plate 511.

[0057] Specifically, the connecting rod 51 can rotate in the upper clamping plate 41, the outer wall of the driven rod 52 is threaded, and the second top plate 521 rotates on the top of the driven rod 52 through a bearing. After the top surface of the second top plate 521 and the bottom surface of the first top plate 511 clamp the circular workpiece, when the connecting rod 51 is rotated, the friction between the second top plate 521 and the first top plate 511 and the workpiece can drive the second top plate 521 to rotate on the driven rod 52.

[0058] In some embodiments, such as Figure 6 As shown, the top surface of the second top plate 521 and the bottom surface of the first top plate 511 are both processed with anti-slip textures.

[0059] Specifically, anti-slip textures are machined on the second top plate 521 and the first top plate 511 to increase the friction between them and the workpiece.

[0060] In some embodiments, such as Figure 6 As shown, the driven rod 52 has an internal hexagonal groove at its top end;

[0061] Specifically, the internal hexagonal recess is adapted to the external hexagonal wrench, and the driven rod 52 is rotated by the hexagonal wrench to drive the second top plate 521 to rise.

[0062] In some embodiments, such as Figure 6 As shown, a groove 521a is provided on the outer periphery of the second top plate 521.

[0063] Specifically, a protrusion adapted to the groove 521a is provided in the lower clamping plate 42. The groove 521a is embedded in the protrusion of the lower clamping plate 42, and the second top plate 521 will not rotate. At this time, the second top plate 521 cooperates with the lower clamping plate 42 to clamp the workpiece that does not require rotation welding.

[0064] In some embodiments, such as Figure 4 As shown, a knob 512 is fixedly connected to the top of the connecting rod 51.

[0065] Specifically, knob 512 is used to drive link 51 to rotate.

[0066] In some embodiments, such as Figure 3 As shown, a locking element 53 is arranged on the outer periphery of the connecting rod 51. The locking element 53 is used to restrict the rotation of the connecting rod 51. The locking element 53 includes a round tube 531, which is located on the outer periphery of the connecting rod 51. The bottom end of the round tube 531 is connected to the upper clamping plate 41. The round tube 531 is connected to the connecting rod 51 by bolts 532.

[0067] Specifically, the round tube 531 is fitted onto the outer wall of the connecting rod 51. The outer wall of the connecting rod 51 is machined with grinding grooves, which increase the friction between the connecting rod 51 and the bolt 532. When it is not necessary to rotate and weld the workpiece, the bolt 532 abuts against the connecting rod 51 to prevent the first top plate 511 from rotating.

[0068] The working principle of this application is illustrated below with a preferred embodiment:

[0069] The workpiece to be welded is placed between the lower clamping plate 42 and the upper clamping plate 41. The upper clamping plate 41 is moved downward around the outer periphery of the limiting rod 4 to clamp the workpiece in conjunction with the lower clamping plate 42. The position of the upper clamping plate 41 is fixed with the positioning pin 41a. Then, the U-shaped frame 31 is adjusted upward on the outer wall of the welding machine body 1. The U-shaped frame 31 moves along the outer wall of the guide rail 32. When it is visually estimated that the fixed workpiece can be moved laterally between the upper electrode and the lower electrode of the welding machine body 1, the position of the U-shaped frame 31 and the guide rail 32 is fixed with the fixing pin 321. The transmission shaft 221 is rotated by the handwheel 221a. At the same time, the transmission shaft 221 drives the sliding sleeve 222 to move. The sliding sleeve 222 drives the sliding seat 21 to move along the horizontal support frame 2. Then, the upper clamping plate 41 and the lower clamping plate 42 move the workpiece between the upper electrode and the lower electrode. The workpiece is welded by stepping on the pedal of the welding machine body 1.

[0070] When welding a circular plate-shaped workpiece is required, the driven rod 52 is rotated using a hex wrench. The driven rod 52 moves upward in the lower clamping plate 42, causing the second top plate 521 and the groove 521a to separate from the protrusion of the lower clamping plate 42. Then, the circular plate-shaped workpiece is placed between the second top plate 521 and the first top plate 511. The upper clamping plate 41 is moved downward to clamp the circular plate-shaped workpiece between the second top plate 521 and the first top plate 511. The position of the sliding seat 21 in the horizontal support frame 2 is adjusted to move the circular plate-shaped workpiece between the upper electrode and the lower electrode. Then, the bolt 532 in the circular tube 531 is rotated to separate it from the connecting rod 51. The connecting rod 51 is rotated using the knob 512. Under the action of friction between the second top plate 521 and the first top plate 511 and the circular plate-shaped workpiece, the circular plate-shaped workpiece rotates with the rotation of the connecting rod 51. The upper electrode and the lower electrode are then connected by stepping on the foot pedal of the welding machine body 1 to weld the workpiece.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended 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 modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An auxiliary clamping and positioning structure for a welding machine, comprising a welding machine body (1), characterized in that, The auxiliary clamping and positioning structure includes: A horizontal support frame (2) is connected to the welding machine body (1) via a connector (3); A sliding seat (21) is slidably connected to the horizontal support frame (2). The top surface of the sliding seat (21) is evenly distributed with threaded holes (21a). The horizontal support frame (2) is equipped with a driving member (22). The driving member (22) is used to drive the sliding seat (21) to move horizontally along the horizontal support frame (2). A limiting rod (4) is provided, the bottom end of which is internally threaded to the threaded hole (21a). An upper clamping plate (41) is slidably connected to the outer periphery of the limiting rod (4). The upper clamping plate (41) is connected to the limiting rod (4) through a positioning pin (41a). A lower clamping plate (42) is arranged parallel to the upper clamping plate (41) and is fixedly connected to the limiting rod (4); The upper clamping plate (41) and the lower clamping plate (42) are used to clamp the workpieces that need to be welded.

2. The auxiliary clamping and positioning structure for a welding machine according to claim 1, characterized in that, The driving element (22) includes: A drive shaft (221) is connected to the horizontal support frame (2) via a bearing, and a handwheel (221a) is provided at the input end of the drive shaft (221). The sliding sleeve (222) is internally threaded to the outer circumference of the drive shaft (221), and the outer circumference of the sliding sleeve (222) is connected to the sliding seat (21).

3. The auxiliary clamping and positioning structure for a welding machine according to claim 1, characterized in that, The connector (3) includes: U-shaped frame (31), the U-shaped groove of the U-shaped frame (31) is inserted and connected to the welding machine body (1), and the side of the U-shaped frame (31) away from the welding machine body (1) is connected to the horizontal support frame (2). Guide rail (32), the guide rail (32) is fixedly connected to the welding machine body (1), and the guide rail (32) is slidably connected to the U-shaped frame (31); The guide rail (32) is equipped with a fixing pin (321), and the U-shaped frame (31) is connected to the horizontal support frame (2) through the fixing pin (321).

4. The auxiliary clamping and positioning structure for a welding machine according to claim 3, characterized in that, The guide rail (32) has slots (322) evenly distributed on the side away from the welding machine body (1), and the slots (322) are adapted to the fixing pins (321).

5. The auxiliary clamping and positioning structure for a welding machine according to claim 1, characterized in that, The upper clamping plate (41) and the lower clamping plate (42) are provided with a workpiece rotating assembly (5), which is used to perform rotary welding on a disc-shaped workpiece. The workpiece rotation assembly (5) includes: A connecting rod (51) is connected to the upper clamping plate (41) via a bearing, and a first top plate (511) is disposed at the bottom end of the connecting rod (51). Driven rod (52), which is threadedly connected to the lower clamping plate (42), and a second top plate (521) is rotatably connected to the top end of the driven rod (52). The top surface of the second top plate (521) corresponds to the bottom surface of the first top plate (511).

6. The auxiliary clamping and positioning structure for a welding machine according to claim 5, characterized in that, The top surface of the second top plate (521) and the bottom surface of the first top plate (511) are both processed with anti-slip texture.

7. The auxiliary clamping and positioning structure for a welding machine according to claim 5, characterized in that, The driven rod (52) has an internal hexagonal groove at its top end.

8. The auxiliary clamping and positioning structure of a welding machine according to claim 5, characterized in that, The outer periphery of the second top plate (521) is provided with a groove (521a).

9. The auxiliary clamping and positioning structure for a welding machine according to claim 5, characterized in that, A knob (512) is fixedly connected to the top end of the connecting rod (51).

10. The auxiliary clamping and positioning structure of a welding machine according to claim 5, characterized in that, The outer periphery of the connecting rod (51) is provided with a locking member (53), which is used to restrict the rotation of the connecting rod (51); The locking element (53) includes: A round tube (531) is located on the outer periphery of the connecting rod (51). The bottom end of the round tube (531) is connected to the upper clamping plate (41). The round tube (531) is connected to the connecting rod (51) by bolts (532).

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