A same-diameter workpiece welding device

Abstract

The application provides a same-diameter workpiece welding device, which comprises a welding mechanism and a clamping tool. The welding mechanism comprises a welding head and is used for welding workpieces. The clamping tool is used for clamping workpieces and comprises at least two clamps which are respectively arranged on the two sides of the welding mechanism. The clamping parts of the two clamps are coaxially arranged so as to make the axes of the clamped workpieces on the same straight line. Then, the welding mechanism can directly weld two workpieces without spot welding, thereby reducing the need for manual spot welding, reducing labor cost and welding cost, and improving welding efficiency. The clamp comprises a fixed jaw and a movable jaw. The movable jaw is rotationally connected to the fixed jaw so as to change the size of the clamping part. The fixed jaw provides a fixed mechanical positioning reference, and the centering degree of the two workpieces can be improved.

Description

Technical Field

[0001] This application relates to the field of welding equipment technology, specifically to a welding equipment for workpieces of the same diameter. Background Technology

[0002] In existing technologies, when welding two workpieces together, it is necessary to ensure that the welding positions of the two workpieces are aligned in order to guarantee the welding accuracy. Currently, most existing technologies involve manually spot-welding the two workpieces to achieve positioning, and then manually welding the spot-welded workpieces or using welding equipment for final welding.

[0003] However, this would require spot welding for positioning during the welding of each workpiece, increasing the demand for manual labor and significantly reducing welding efficiency, thereby raising production costs. Furthermore, most existing welding equipment can only weld workpieces that have already undergone spot welding, resulting in low welding efficiency.

[0004] Therefore, there is room for further improvement in the welding equipment of the prior art. Utility Model Content

[0005] In view of this, and addressing the technical problem that the welding equipment in the prior art can only weld workpieces that have already undergone tack welding, resulting in a large amount of manual labor required throughout the welding process, leading to high welding costs and low welding efficiency, this application provides a welding equipment for workpieces of the same diameter. The equipment is equipped with a clamping fixture and a welding mechanism. The clamping fixture can simultaneously clamp two workpieces of the same diameter to ensure the coaxiality of the two workpieces. This allows the welding mechanism to directly weld the workpieces without prior tack welding, reducing the amount of manual labor required and welding costs, and improving welding efficiency.

[0006] This application provides a welding device for workpieces of the same diameter, comprising: Welding mechanism, including welding head, for welding workpieces; A clamping fixture for clamping workpieces; it includes at least two clamps, which are located on both sides of the welding mechanism in the horizontal direction; each clamp holds one workpiece, and the clamping parts of the two clamps are coaxially arranged so that the axes of the two clamped workpieces are on the same straight line. The clamp includes a fixed jaw and a movable jaw, with the movable jaw rotatably connected to the fixed jaw to change the size of the clamping part.

[0007] Compared with the prior art, the welding equipment for workpieces of the same diameter provided in this application includes a welding mechanism and a clamping fixture. The welding mechanism is capable of welding the workpiece; the clamping fixture includes at least two clamps located on both sides of the welding mechanism, wherein each clamp can clamp one workpiece, and the clamping parts of the two clamps are coaxially arranged so that the axes of the workpieces clamped by the two clamps can be kept on the same straight line, ensuring the coaxiality of the two workpieces, thereby keeping the two workpieces aligned; thus, the welding equipment can directly weld the two workpieces without the need for spot welding, thereby reducing the need for manual spot welding, reducing labor costs and welding costs, and improving efficiency. High welding efficiency; the fixture includes two jaws rotatably connected, one of which is a fixed jaw and the other is a movable jaw; the movable jaw rotates relative to the fixed jaw, thereby changing the size of the clamping part of the fixture, thus realizing the adjustment of the size of the clamping part, realizing the clamping or releasing of the workpiece, and facilitating the clamping of workpieces of different diameters; in particular, the fixed jaw provides a relatively fixed mechanical positioning reference for the clamping part, and the movement of only one jaw reduces the error generated during the movement of the fixture, resulting in good alignment of the workpiece after being clamped by the two clamping parts; moreover, such a fixture only requires one drive mechanism, reducing the setting cost of the drive mechanism, and has a simple structure.

[0008] Preferably, the clamping fixture further includes: Mounting base, used for mounting clamps; A connecting assembly, mounted on a mounting base and located between two clamps, is used to mount the welding mechanism; The welding mechanism is rotatably connected to the mounting base via the connecting assembly.

[0009] In this embodiment, the welding mechanism can be rotatably connected to the mounting base through the connecting component, thereby enabling the welding mechanism to rotate relative to the mounting base and move away from the workpiece, thus facilitating the placement and removal of the workpiece by the operator.

[0010] Preferably, the clamp includes: The clamp also includes a drive mechanism, which is connected to the movable jaw and is used to drive the movable jaw to rotate. The drive mechanism pushes the movable claw vertically to change the horizontal distance between the movable claw and the fixed claw.

[0011] In this embodiment, the fixed claw is fixedly connected to the mounting base, which can position the clamping part. The movable claw is rotatably connected to the fixed claw and connected to the drive mechanism. The drive mechanism is used to drive the displacement of the clamping claw, thereby flexibly adjusting the size of the clamping part to clamp or release the workpiece.

[0012] Preferred options also include: The weld joint, located on the welding mechanism, is used for the workpiece to pass through; The Haval clamp is connected to the end of the welding mechanism furthest from the welding head and is used to clamp the workpiece. The Haval clamp includes a clamp assembly and an adjustment assembly; the adjustment assembly is connected to the clamp assembly to adjust the clamping width of the clamp assembly.

[0013] In this embodiment, the Haval fixture can clamp the workpiece in conjunction with the clamp, and the Haval fixture is connected to the welding mechanism, which can play a centering role for the workpiece, ensuring the concentricity of the workpiece after clamping and the weld joint, and improving the welding accuracy.

[0014] Preferably, the connection component includes: A fixed support is fixedly connected to the mounting base and is located between the first clamp and the second clamp; The connecting support is fixedly connected to the welding mechanism at one end and rotatably connected to the fixed support at the other end.

[0015] In this embodiment, the fixed support can indirectly fix the welding mechanism on the mounting base, ensuring the stability of the welding operation of the welding mechanism; while the welding mechanism is connected to the fixed support through the connecting support, and the connecting support is rotatably connected to the fixed support, so that the welding mechanism can rotate relative to the fixed support.

[0016] Preferred options also include: The control mechanism, connected to the drive mechanism, is used to control the operating status of the drive mechanism; The control mechanism includes an independent control module and a linkage control module. The independent control module is used to control each fixture independently, and the linkage control module is used to control all fixtures synchronously at the same time.

[0017] In this embodiment, the control mechanism can conveniently and quickly control the operating status of the drive mechanism, making it convenient for workers to pick up workpieces; while the setting of linkage control module and independent control module can improve the diversity of control modules and improve control flexibility and convenience.

[0018] Preferably, the clamp further includes: The first connecting part is used to connect the fixed claw and the movable claw; The second connecting part is used to connect the movable claw to the drive mechanism; Wherein, the center of the first connecting part and the center of the clamping part are on the same vertical line, and the line connecting the first connecting part and the second connecting part is inclined in the vertical direction; In the vertical direction, the distance between the first connecting part and the clamping part is greater than the distance between the second connecting part and the clamping part.

[0019] In this embodiment, the movable claw is rotatably connected to the fixed claw via the first connecting part and connected to the drive mechanism via the second connecting part, thereby enabling the drive mechanism to drive the movable claw to rotate relative to the fixed claw, so as to adjust the size of the clamping part; and the center of the first connecting part and the clamping part are located on the same vertical line, so that no matter how the movable claw rotates, the clamping parts of the two clamps are still coaxially arranged.

[0020] Preferably, the drive mechanism includes: The drive end connects to the bottom of the movable claw; The fixed end connects to the mounting base; The drive end can extend and retract in the vertical direction to drive the movable claw to rotate around the axis of the first connecting part.

[0021] In this embodiment, the drive mechanism adopts a linear displacement drive structure. With the reasonable structure of the fixture, the linear displacement drive of the drive mechanism can be converted into the rotation of the movable jaw, and a good thrust can be provided to the movable jaw to ensure the clamping effect on the workpiece.

[0022] Preferably, the first connecting portion includes: First connecting shaft; The first connecting hole is provided on the fixing claw and is used for the first connecting shaft to pass through; The second connecting hole is located on the movable claw and is used for the first connecting shaft to pass through.

[0023] In this embodiment, the first connecting shaft passes through the first connecting hole and the second connecting hole, enabling a rotatable connection between the fixed claw and the movable claw.

[0024] Preferably, the second connecting portion includes: Second connecting shaft; The first mounting hole is provided on the movable claw for the second connecting shaft to pass through; The second mounting hole is provided on the drive mechanism for the second connecting shaft to pass through; The first mounting hole is a strip-shaped hole, and the second mounting hole is a circular hole.

[0025] In this embodiment, the second connecting shaft passes through the first mounting hole and the second mounting hole, enabling the connection between the drive mechanism and the movable claw; the first mounting hole is set as a strip hole to allow for adjustment of the stroke when the movable claw rotates, so as to ensure the smooth displacement of the movable claw.

[0026] Preferred options also include: The first clamping block is detachably connected to the fixing claw and is provided with a first clamping groove; The second clamping block is detachably connected to the movable claw; it has a second clamping groove that faces the first clamping groove to form a clamping part; The first and second clamping grooves are V-shaped or C-shaped structures.

[0027] In this embodiment, the two clamping grooves are arranged facing each other to form a clamping part with vertical limiting, which can ensure the clamping effect on the workpiece. Attached Figure Description

[0028] Figure 1 This is a partial three-dimensional structural diagram of a welding equipment for workpieces of the same diameter provided in an embodiment of this application. Figure 1 ; Figure 2 This is a partial three-dimensional structural diagram of a welding equipment for workpieces of the same diameter provided in an embodiment of this application. Figure 2 ; Figure 3 This is a side view schematic diagram of a welding equipment for workpieces of the same diameter provided in an embodiment of this application; Figure 4 This is a cross-sectional structural schematic diagram of the first connecting portion provided in an embodiment of this application; Figure 5 This is a three-dimensional structural schematic diagram of a welding device for workpieces of the same diameter provided in an embodiment of this application; Figure 6 This is a cross-sectional structural schematic diagram of the connection structure between the fixed support and the connecting support provided in an embodiment of this application; Figure 7 yes Figure 1 A magnified view of part A; Figure 8 yes Figure 3 A magnified view of part B.

[0029] Reference numerals: 1. Clamping fixture; 2. Welding mechanism; 3. Workpiece; 11. Mounting base; 12. Clamp; 13. Connecting assembly; 121. Fixed claw; 122. Movable claw; 123. Drive mechanism; 124. First connecting part; 125. Second connecting part; 1211, First clamping block; 1212, First receiving groove; 1221, Second clamping block; 1241, First connecting shaft; 1242, First connecting hole; 1243, Second connecting hole; 1244, First receiving hole; 1245, Second receiving hole; 1246, First bearing; 1247, Second bearing; 1251, Second mounting hole; 1252, Second connecting shaft; 1253, Second receiving groove; 131. Connecting support; 132. Fixed support; 1311, Third connecting hole; 1321, Fourth connecting hole; 1322, Third receiving hole; 1323, Third connecting shaft; 1324, Third bearing; 21. Welding head; 22. Weld joint; 23. Haval clamp; 24. Welding support. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0031] In the description of this application, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0032] Those skilled in the art should understand that in the disclosure of this application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, the above terms should not be construed as limitations on this application.

[0033] The present application will now be described in further detail with reference to the accompanying drawings, see below. Figures 1 to 8 illustrate.

[0034] This application provides a welding device for workpieces of the same diameter (hereinafter referred to as welding device), which is used to weld two workpieces 3 of the same pipe diameter; such as Figures 1 to 4 As shown, it includes a welding mechanism 2 and a clamping fixture 1. The clamping fixture 1 is used to clamp two workpieces 3 and align them. The welding mechanism 2 is used to weld the two workpieces 3 at the aligned position. The welding equipment of this application does not require pre-position welding of the two workpieces 3. By aligning the two workpieces 3 with the clamping fixture 1, the welding mechanism 2 can directly weld the two workpieces 3, thereby reducing the need for manual spot welding, reducing labor costs and welding costs, and improving welding efficiency.

[0035] Specifically, such as Figures 1 to 3As shown, the clamping fixture 1 includes a mounting base 11 and at least two clamps 12. The mounting base 11 is a plate-shaped structure, and the two clamps 12 are fixedly connected to the mounting base 11 and spaced apart in the horizontal direction. Each clamp 12 can clamp one workpiece 3, and each clamp 12 is provided with a clamping part. The clamping parts of the two clamps 12 are coaxially arranged, so that the workpieces 3 clamped by the two clamps 12 can be kept on the same horizontal straight line. At the same time, the space between the two clamps 12 is used to install a welding mechanism 2, which is connected to the mounting base 11. Since the two clamps 12 clamp the two workpieces 3 coaxially, the concentricity of the two workpieces 3 can be kept aligned, so that the two workpieces 3 can be directly welded without the need for manual spot welding, thereby reducing the need for manual spot welding, reducing labor costs and welding costs, and improving welding efficiency.

[0036] like Figure 3 As shown, the clamp 12 includes two jaws, namely a fixed jaw 121 and a movable jaw 122. The movable jaw 122 and the fixed jaw 121 form a clamping part. The fixed jaw 121 is fixedly connected to the mounting base 11. The movable jaw 122 rotates relative to the fixed jaw 121 to change the size of the clamping part of the clamp 12, thereby clamping or releasing the workpiece 3 and facilitating the clamping of workpieces 3 with different pipe diameters. The fixed jaw 121 provides a relatively fixed mechanical positioning reference for the clamping part. The movement of only one jaw reduces the error generated during the movement of the clamp 12, resulting in good centering of the workpiece 3 after being clamped by the clamping parts of the two clamps 12. Moreover, such a clamp 12 only needs to drive one jaw, reducing the cost of setting up the drive mechanism 123 and simplifying the structure.

[0037] In this application, as Figure 3 As shown, the two clamps 12 have the same structure, and the fixing claws 121 are located on the same side, and the reference surfaces of the fixing claws 121 are on the same plane, thus ensuring that the two clamps 12 have the same fixing reference, thereby ensuring the centering effect of the workpieces 3 held by the two clamps 12.

[0038] Among them, such as Figure 1 , Figure 2 , Figure 7As shown, the clamping fixture 1 is provided with a connecting component 13. The bottom of the connecting component 13 is fixedly connected to the mounting base 11, and the top of the connecting component 13 is connected to the mounting base 11. The welding mechanism 2 is rotatably connected to the mounting base 11 through the connecting component 13. Specifically, the connecting component 13 includes a fixed support 132 and a connecting support 131. The fixed support 132 is located on the side of the mounting base 11. The bottom of the fixed support 132 is fixedly connected to the top of the mounting base 11, and the top of the fixed support 132 is rotatably connected to the connecting support 131. The end of the connecting support 131 away from the fixed support 132 is fixedly connected to the welding mechanism 2, so that the welding mechanism 2 can rotate relative to the fixed support 132 through the connecting support 131. When it is necessary to install the workpiece 3 on the clamping fixture 1 or remove the workpiece 3 from the clamping fixture 1, the welding mechanism 2 can be rotated to move the welding mechanism 2 off the workpiece 3, so as to facilitate the picking up or placing of the workpiece 3.

[0039] Furthermore, the welding mechanism 2 will be described in more detail; such as Figures 1 to 2 As shown, the welding mechanism 2 includes a welding support 24 and a welding head 21. The welding support 24 is used to install the welding head 21. The welding support 24 is roughly an inverted U-shaped structure, and its opening center forms a welding port 22. The welding head 21 is located on the side of the welding port 22. Two workpieces 3 extend toward the welding port 22 and intersect at the welding port 22. The welding head 21 is used to weld the connection between the two workpieces 3 that pass through the welding port 22.

[0040] The connecting support 131 is connected to the welding support 24; a Haver clamp 23 is connected to the end of the welding support 24 away from the welding head 21, and the Haver clamp 23 is used to clamp the workpiece 3; such as Figure 2 As shown, the Haval clamp 23 includes a clamp assembly and an adjustment assembly. The clamp assembly includes two clamps that interact to clamp the workpiece 3. The adjustment assembly is connected to the clamp assembly to adjust the clamping width of the clamp assembly, thereby achieving clamping and releasing of the workpiece 3.

[0041] In an embodiment, the Haval clamp 23 is fixed relative to the welding head 21 and the welding port 22, and the center of the clamping part formed by its clamping assembly remains unchanged. Therefore, the Haval clamp 23 can play a centering role for the workpiece 3. When it cooperates with the clamp 12, it ensures the concentricity of the workpiece 3 and the welding port 22 after the clamp 12 is clamped, thereby improving the welding accuracy.

[0042] It should be noted that in this application, the welded workpiece 3 is a columnar structure, and the cross-section of the workpiece 3 can be circular or elliptical; the clamping part is the space for clamping the workpiece 3, wherein the size of the clamping part is related to the size of the workpiece 3 being clamped, and the size of the clamping part is determined by the size of the workpiece 3. When the clamping part is coaxially arranged, the axis of the clamping part formed by the clamping fixture 12 clamps the workpiece 3, and the axis of the clamping part is on the same straight line as the axis of the workpiece 3. In this application, the workpiece 3 is an elliptical pipe.

[0043] Furthermore, the fixture 12 is described in more detail; such as Figures 1 to 4 As shown, the clamp 12 also includes a drive mechanism 123. The bottom of the fixed claw 121 is fixedly connected to the mounting base 11 by bolts or welding, etc., and the movable claw 122 is rotatably connected to the fixed claw 121; wherein, as Figure 4 As shown, the top of the fixed jaw 121 is provided with a first clamping block 1211, and the end of the first clamping block 1211 away from the fixed jaw 121 is provided with a first clamping groove. The top of the movable jaw 122 is provided with a second clamping block 1221, and the end of the second clamping block 1221 away from the movable jaw 122 is provided with a second clamping groove. The first clamping groove and the second clamping groove have the same structure but are arranged facing each other to form a clamping part for clamping the workpiece 3. The driving mechanism 123 is connected to the movable jaw 122 and is used to drive the movable jaw 122 to rotate, thereby adjusting the size of the clamping part and thus clamping or releasing the workpiece 3. Figure 4 As shown, the drive mechanism 123 pushes the movable claw 122 vertically, and then adjusts the distance between the movable claw 122 and the fixed claw 121 on the horizontal plane, so that the driving direction of the drive mechanism 123 is perpendicular to the clamping direction of the movable claw 122 on the workpiece, thereby making the driving effect of the drive mechanism 123 on the movable claw 122 better, and ensuring the clamping effect of the movable claw 122 on the workpiece 3 as much as possible.

[0044] In this embodiment, the fixed claw 121 is fixedly connected to the mounting base 11, thereby fixing the first clamping block 1211 and the first clamping groove relatively, and realizing the reference positioning of the clamping part. This ensures that when the clamping fixture 12 clamps different workpieces 3, the axis of the clamping part will not deviate too much, thereby reducing the adjustment amount of the welding center of the welding mechanism 2 and improving the applicability of the clamping fixture 1.

[0045] like Figure 4 As shown, the first clamping block 1211 and the fixing claw 121 are detachably connected by bolts or screws, and the second clamping block 1221 and the fixing claw 121 are also detachably connected by bolts or screws. This allows for the replacement of clamping blocks of different sizes and with different grooves to accommodate workpieces 3 of different diameters, ensuring optimal clamping performance. The first clamping block 1211 and the second clamping block 1221 can be made of aluminum, which is softer than other metals, reducing wear on the workpiece 3. Figure 4 As shown, the first and second clamping grooves are V-shaped or C-shaped structures, which increase the contact area with the outer side of the workpiece 3 and can limit the workpiece 3 in the vertical direction, so that the workpiece 3 can be limited in the first and second clamping grooves and will not fall easily.

[0046] Among them, such as Figure 4 As shown, the fixed jaw 121 and the movable jaw 122 are roughly triangular in structure. The clamp 12 has a first connecting part 124 and a second connecting part 125. The fixed jaw 121 and the movable jaw 122 are rotatably connected through the first connecting part 124, and the drive mechanism 123 is connected to the movable jaw 122. Typically, the first connecting part 124 is located directly below the clamping part, meaning the line connecting the center of the first connecting part 124 and the center of the clamping part is parallel to the vertical direction. This ensures that when the movable jaw 122 rotates relative to the fixed jaw 121, it rotates around the central axis of the first connecting part 124, resulting in a smaller rotational offset and ensuring the clamping stability of the workpiece 3. Furthermore, the central axes of the first connecting parts 124 of the two clamps 12 are on the same straight line to further ensure the concentricity of the clamping parts of the two clamps 12 and reduce errors.

[0047] In the vertical direction, the second connecting part 125 is located between the first connecting plate and the clamping part, meaning the distance between the first connecting part 124 and the clamping part is greater than the distance between the second connecting part 125 and the clamping part. The height of the second connecting part 125 is also greater than the height of the first connecting part 124. This results in a smaller driving distance for the driving mechanism 123 on the movable claw 122, allowing the driving mechanism 123 to effectively displace the movable claw 122 with less force and pushing force, thus improving the driving efficiency of the driving mechanism 123 on the movable claw 122. Simultaneously, the second connecting part 125 is located on the side of the movable claw 122 away from the fixed claw 121. Figure 4 As shown, the line connecting the second connecting part 125 and the first connecting part 124 is inclined in the vertical direction. The line connecting the first connecting part 124, the second connecting part 125, and the clamping part forms a triangular structure, which improves the structural stability of the movable jaw 122 and the clamping stability of the workpiece 3. Furthermore, in the vertical direction, as... Figure 4 As shown, the first connecting part 124 and the clamping part are approximately on the same vertical plane, and the second connecting part 125 is located between the first connecting part 124 and the clamping part; and in the horizontal direction, there is a distance between the second connecting part 125 and the first connecting part 124 and the clamping part, so that when the movable claw 122 rotates to the right and downward under the action of gravity, it will be restricted upward by the drive mechanism 123 to ensure the stability of the movable claw 122.

[0048] Among them, such as Figure 4As shown, the movable jaw 122 is configured as a triangular structure, and its bottom forms a space for mounting the drive mechanism 123 between itself and the mounting base 11. The drive mechanism 123 includes a drive end and a fixed end. The bottom of the drive mechanism 123 is the fixed end, which is fixedly connected to the mounting base 11. The top of the drive mechanism 123 is the drive end, which is connected to the bottom of the movable jaw 122. The drive end can extend and retract in the vertical direction. When the drive end extends upward, it drives the movable jaw 122 to rotate toward the fixed jaw 121, thereby reducing the clamping width of the clamping part to clamp the workpiece 3. Conversely, when the drive end retracts downward, it drives the movable jaw 122 to rotate away from the fixed jaw 121, thereby increasing the clamping width of the clamping part to release the workpiece 3.

[0049] In this embodiment, the drive mechanism 123 adopts a linear displacement drive structure. With the reasonable structure of the clamp 12, the linear displacement drive of the drive mechanism 123 can be converted into the rotation of the movable claw 122. Furthermore, the movable claw 122 is set as a triangular structure, which can effectively convert the vertical force provided by the drive mechanism 123 into the horizontal force. When the drive mechanism 123 is in action, it can always provide an upward thrust to the movable claw 122, so that the movable claw 122 can always provide a horizontal thrust to the workpiece 3, thereby ensuring the clamping effect on the workpiece 3.

[0050] Based on any of the above embodiments, the first connecting portion 124 will be further described; such as Figures 3 to 5 As shown, the first connecting part 124 includes a first connecting shaft 1241, a first connecting hole 1242, and a second connecting hole 1243. The first connecting hole 1242 is disposed on the fixed claw 121 and passes through the fixed claw 121. The second connecting hole 1243 is disposed on the movable claw 122 and passes through the movable claw 122. The axis of the first connecting hole 1242 is parallel to the axis of the second connecting hole 1243 and the axis of the clamped workpiece 3. The outer diameter of the first connecting shaft 1241 is less than or equal to the diameter of the first connecting hole 1242 and the second connecting hole 1243. The diameters of the first connecting hole 1242 and the second connecting hole 1243 are the same. The first connecting shaft 1241 passes through both the first connecting hole 1242 and the second connecting hole 1243 to achieve a rotatable connection between the fixed claw 121 and the movable claw 122.

[0051] Among them, such as Figure 3 , Figure 4 As shown, the fixed claw 121 is provided with a first receiving groove 1212. The first receiving groove 1212 is open on the end face facing the movable claw 122, so that the movable claw 122 can be inserted into the first receiving groove 1212. The first receiving groove 1212 can reduce the width of the movable claw 122, reduce the amount of material used, and thus reduce the manufacturing cost. Figure 5As shown, the width of the first receiving groove 1212 is equal to the width of the movable claw 122, so that the side wall of the movable claw 122 can fit tightly with the side wall of the first receiving groove 1212, restricting the axial displacement of the movable claw 122 and ensuring the stable rotation of the fixed claw 121 and the movable claw 122.

[0052] Furthermore, such as Figure 5 As shown, the first connecting hole 1242 has a first receiving hole 1244 at the end away from the movable claw 122. The first receiving hole 1244 is coaxially arranged with the first connecting hole 1242, and the diameter of the first receiving hole 1244 is larger than the diameter of the first connecting hole 1242. The first connecting part 124 also includes a first bearing 1246, which is sleeved on the first connecting shaft 1241 and located inside the first receiving hole 1244. The outer side wall of the first bearing 1246 is in close contact with the inner wall of the first receiving hole 1244, and the inner side wall of the first bearing 1246 is in close contact with the outer side wall of the first connecting shaft 1241, so that the fixed claw 121 can be rotatably connected to the first connecting shaft 1241 through the first bearing 1246.

[0053] Similarly, such as Figure 5 As shown, the second connecting hole 1243 has second receiving holes 1245 at both axial ends. The second receiving holes 1245 are coaxially arranged with the second connecting hole 1243, and the diameter of the second receiving hole 1245 is larger than the diameter of the second connecting hole 1243. The first connecting part 124 also includes a second bearing 1247, which is sleeved on the first connecting shaft 1241 and located inside the second receiving hole 1245. The outer side wall of the second bearing 1247 is in close contact with the inner wall of the second receiving hole 1245, and the inner side wall of the second bearing 1247 is in close contact with the outer side wall of the first connecting shaft 1241, so that the movable claw 122 can be rotatably connected to the first connecting shaft 1241 through the second bearing 1247.

[0054] In this embodiment, by setting the first bearing 1246 and the second bearing 1247, the smoothness of rotation of the fixed claw 121 and the movable claw 122 can be improved, rotational friction can be reduced, the service life of the clamping fixture 1 can be increased, and the flexibility of the fixture 12 can be improved.

[0055] Based on any of the above embodiments, the second connecting portion 125 will be further described; such as Figure 4 , Figure 8As shown, the second connecting part 125 includes a second connecting shaft 1252, a first mounting hole and a second mounting hole 1251. The first mounting hole is disposed on the movable jaw 122 and passes through the movable jaw 122. The second mounting hole 1251 is disposed on the drive mechanism 123 and passes through the drive mechanism 123. The axis of the first mounting hole is parallel to the axis of the second mounting hole 1251 and the axis of the clamped workpiece 3. The second connecting shaft 1252 passes through both the first mounting hole and the second mounting hole 1251 to realize the rotational connection between the movable jaw 122 and the drive mechanism 123.

[0056] Preferably, the second mounting hole 1251 is a circular hole, and the outer diameter of the second connecting shaft 1252 is greater than or equal to the second mounting hole 1251. The second connecting shaft 1252 is fixedly connected to the drive mechanism 123 through the second mounting hole 1251. The first mounting hole is a strip-shaped hole, and the length of the first mounting hole is greater than the diameter of the second connecting shaft 1252, thereby providing the movable claw 122 with adjustable stroke when rotating, so as to ensure the smooth displacement of the movable claw 122.

[0057] Furthermore, such as Figure 8 As shown, the movable claw 122 is provided with a second receiving groove 1253. The second receiving groove 1253 is open on the end face of the movable claw 122 facing the drive mechanism 123, so that the drive end of the drive mechanism 123 can be inserted into the second receiving groove 1253. The provision of the second receiving groove 1253 can reduce the amount of material used in manufacturing, thereby reducing manufacturing costs. Figure 8 As shown, the width of the second receiving groove 1253 is equal to the width of the driving end of the driving mechanism 123, so that the side wall of the driving end of the driving mechanism 123 can fit tightly with the side wall of the second receiving groove 1253, restricting the axial displacement of the movable claw 122 and ensuring the stability of the driving mechanism 123 when driving the movable claw 122.

[0058] Based on any of the above embodiments, the connection between the welding mechanism 2 and the mounting base 11 will be further described; such as Figure 1 , Figure 6 , Figure 7 As shown, the mounting base 11 is provided with a fixed support 132 and a connecting support 131. The fixed support 132 is located on the side of the mounting base 11, and its bottom is fixedly connected to the top of the mounting base 11. The top of the fixed support 132 is rotatably connected to the connecting support 131. The end of the connecting support 131 away from the fixed support 132 is fixedly connected to the welding mechanism 2, thereby allowing the welding mechanism 2 to rotate relative to the fixed support 132 via the connecting support 131. Figure 4As shown, the welding mechanism 2 has an opening for the workpiece 3 to pass through, and the welding gun on the welding mechanism 2 is arranged around the opening for welding the workpiece 3 that passes through the opening; when it is necessary to install the workpiece 3 on the clamping fixture 1 or to remove the workpiece 3 from the clamping fixture 1, the welding mechanism 2 can be rotated so that the welding mechanism 2 is removed from the workpiece 3, so as to facilitate the picking up or placing of the workpiece 3.

[0059] Among them, such as Figure 6 , Figure 7 As shown, the clamping fixture 1 also includes a third connecting shaft 1323 and a third bearing 1324; a third connecting hole 1311 is provided on the connecting support 131, and the third connecting hole 1311 passes through the connecting support 131 parallel to the axial direction of the workpiece 3; a fourth connecting hole 1321 is provided on the fixed support 132, and the fourth connecting hole 1321 passes through the fixed support 132; the axis of the third connecting hole 1311 is parallel to the axis of the fourth connecting hole 1321 and the clamped workpiece 3; wherein, the outer diameter of the third connecting shaft 1323 is larger than that of the third connecting hole 1311, so as to realize the fixed connection between the third connecting shaft 1323 and the connecting support 131; the diameter of the fourth connecting hole 1321 is larger than that of the third connecting shaft 1323. 1323, The end of the fourth connecting hole 1321 away from the third connecting hole 1311 is provided with a third receiving hole 1322. The diameter of the third receiving hole 1322 is larger than that of the fourth connecting hole 1321. The third bearing 1324 is sleeved on the third connecting shaft 1323 and is located inside the third receiving hole 1322. The inner wall surface of the third bearing 1324 is in close contact with the outer wall surface of the third connecting shaft 1323, and the outer wall surface of the third bearing 1324 is in close contact with the inner wall surface of the third receiving hole 1322. This allows the fixed seat to be rotatably connected to the connecting support 131 through the third bearing 1324 and the third connecting shaft 1323, thereby enabling the welding mechanism 2 to rotate relative to the fixed support 132.

[0060] Based on any of the above embodiments, the welding equipment is further improved; in this embodiment, a control mechanism is also provided, which is connected to the drive mechanism 123. The control mechanism is used to control the operating status of the drive mechanism 123, including start, stop, and the amount of extension and retraction, so that the operator can flexibly control the clamping fixture 1 and facilitate the worker to pick up or place the workpiece 3.

[0061] The control mechanism can be manually controlled by a button, or it can be set to be controlled by a foot pedal, or it can be controlled by touch. In actual use, the appropriate control method can be selected according to actual needs, and there are no restrictions here.

[0062] In this embodiment, the control mechanism includes an independent control module and a linkage control module. The independent control module is used to independently control each fixture 12, while the linkage control module is used to synchronously control all fixtures 12 simultaneously. When the independent control module is selected, the control mechanism adopts an independent control mode for each fixture 12, that is, it controls the operating state of each fixture 12 separately, and each fixture 12 controls each other independently without interfering with each other, thereby improving control flexibility. When the linkage control module is selected, the drive mechanisms 123 of all fixtures 12 are in linkage mode, which can control all fixtures 12 to run simultaneously at one time, thereby simplifying operation and improving efficiency.

[0063] It should be noted that the various embodiments of this application can be arbitrarily combined into new embodiments, provided that the solutions do not conflict and the technical solutions can coexist.

[0064] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A welding device for workpieces of the same diameter, characterized in that, include: Welding mechanism (2), including welding head (21), for welding workpiece (3); A clamping fixture (1) is used to clamp a workpiece (3); it includes at least two clamps (12) and is located on both sides of the welding mechanism (2) in the horizontal direction; the two clamps (12) clamp a workpiece (3) respectively, and the clamping parts of the two clamps (12) are coaxially arranged so that the axes of the two clamped workpieces (3) are on the same straight line. The clamp (12) includes a fixed jaw (121) and a movable jaw (122), the movable jaw (122) being rotatably connected to the fixed jaw (121) to change the size of the clamping part.

2. The welding equipment for workpieces of the same diameter according to claim 1, characterized in that, The clamping fixture (1) also includes: Mounting base (11) is used to mount clamp (12); The connecting component (13) is located on the mounting base (11) between the two clamps (12) and is used to install the welding mechanism (2). The welding mechanism (2) is rotatably connected to the mounting base (11) via the connecting assembly (13).

3. The welding equipment for workpieces of the same diameter according to claim 1, characterized in that, The clamp (12) further includes a drive mechanism (123), which is connected to the movable claw (122) and is used to drive the movable claw (122) to rotate; The drive mechanism (123) pushes the movable claw (122) vertically to change the distance between the movable claw (122) and the fixed claw (121) in the horizontal direction.

4. The welding equipment for workpieces of the same diameter according to claim 1, characterized in that, Also includes: Weld joint (22) is located on welding mechanism (2) and is used for workpiece (3) to pass through; The Haval clamp (23) is connected to the end of the welding mechanism (2) away from the welding head (21) and is used to clamp the workpiece (3); The Haval clamp (23) includes a clamp assembly and an adjustment assembly; the adjustment assembly is connected to the clamp assembly to adjust the clamping width of the clamp assembly.

5. The constant diameter workpiece welding apparatus of any one of claims 2 to 4, wherein, The connection component (13) includes: The fixed support (132) is fixedly connected to the mounting base (11) and is located between the first clamp (12) and the second clamp (12); The connecting support (131) is fixedly connected at one end to the welding mechanism (2) and rotatably connected at the other end to the fixed support (132).

6. The constant diameter workpiece welding apparatus of any one of claims 3-4, wherein, Also includes: A control mechanism, connected to the drive mechanism (123), is used to control the operating status of the drive mechanism (123); The control mechanism includes an independent control module and a linkage control module. The independent control module is used to independently control each fixture (12), and the linkage control module is used to synchronously control all fixtures (12) at the same time.

7. The constant diameter workpiece welding apparatus of any one of claims 3-4, wherein, The clamp (12) also includes: The first connecting part (124) is used to connect the fixed claw (121) and the movable claw (122); The second connecting part (125) is used to connect the movable claw (122) to the drive mechanism (123); Wherein, the center of the first connecting part (124) and the center of the clamping part are on the same vertical line, and the line connecting the first connecting part (124) and the second connecting part (125) is inclined in the vertical direction; In the vertical direction, the distance between the first connecting part (124) and the clamping part is greater than the distance between the second connecting part (125) and the clamping part.

8. The constant diameter workpiece welding apparatus of claim 7 wherein, The drive mechanism (123) includes: The drive end is connected to the bottom of the movable claw (122); The fixed end is connected to the mounting base (11); The drive end can extend and retract in the vertical direction to drive the movable claw (122) to rotate around the axis of the first connecting part (124).

9. The welding equipment for workpieces of the same diameter according to claim 7, characterized in that, The first connecting part (124) includes: First connecting shaft (1241); The first connecting hole (1242) is provided on the fixing claw (121) for the first connecting shaft (1241) to pass through; The second connecting hole (1243) is provided on the movable claw (122) for the first connecting shaft (1241) to pass through; And / or, The second connecting part (125) includes: Second connecting shaft (1252); The first mounting hole is provided on the movable claw (122) for the second connecting shaft (1252) to pass through; The second mounting hole (1251) is provided on the drive mechanism (123) for the second connecting shaft (1252) to pass through; The first mounting hole is a strip-shaped hole, and the second mounting hole (1251) is a circular hole.

10. The welding equipment for workpieces of the same diameter according to claim 3, characterized in that, Also includes: The first clamping block (1211) is detachably connected to the fixing claw (121) and is provided with a first clamping groove; The second clamping block (1221) is detachably connected to the movable claw (122); it is provided with a second clamping groove facing the first clamping groove to form a clamping part; The first and second clamping grooves are V-shaped or C-shaped structures.

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