Clamping and seam aligning device

Abstract

The clamping butt joint device is characterized by comprising a butt joint support, two lead screw clamping mechanisms, two oil cylinder clamping mechanisms and at least one working platform mechanism, a butt joint channel is arranged on the butt joint support in the X direction; the lead screw clamping mechanism and the oil cylinder clamping mechanism are both installed on the opposite seam support and matched with each other. The working platform mechanism is installed on the outer wall of the butt joint support in a position-adjustable mode, and the working platform mechanism is arranged close to the butt joint channel. The welding fixture can be suitable for welding work of cylindrical workpieces with a large diameter change range, the application range is expanded, and the clamping and seam aligning effect on the cylindrical workpieces is improved; moreover, the structure is simple, the layout is reasonable, and workers can weld conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of seam welding equipment, in particular to a seam clamping device. Background Art

[0002] The manufacturing process of welded steel pipes in the prior art usually involves bending and curling a steel plate into a cylindrical shape and then welding the two edges of the steel plate to obtain a steel pipe. The steel plate bending or curling process usually uses a bending machine to repeatedly press and bend the steel plate to bend the steel plate into a tubular shape. First, a bending machine is used to bend one half of the steel plate to form a C-shaped structure, and then the other half of the steel plate is bent by the bending machine to form another C-shaped structure. The two C-shaped structures are arranged opposite to each other to form a cylindrical workpiece with an opening. After the cylindrical workpiece is removed from the bending machine, the opening is manually spot welded and butt welded to form a complete steel pipe.

[0003] At present, the welding of cylindrical workpieces includes spot welding and butt welding processes. In order to ensure the forming quality of the cylindrical workpiece, it must be spot welded before butt welding. That is, the cylindrical workpiece with an opening is butted to reduce the gap spacing, and then spot welded manually at a certain distance to preliminarily form the cylindrical workpiece; in this way, the welding quality of the cylindrical workpiece can be improved during the later butt welding.

[0004] However, traditional spot welding operations are mostly performed manually through auxiliary tooling. Due to the frame structure design and its own characteristics of the auxiliary tooling, its own adaptive adjustment range is small and it is not suitable for welding cylindrical workpieces with a large diameter variation range. The operation is complicated and cumbersome, resulting in great difficulty and high labor intensity during manual welding. Moreover, the welding quality between the gaps of the cylindrical workpiece after spot welding is relatively low, which also affects the subsequent butt welding operation. Utility Model Content

[0005] In view of this, the technical problem to be solved by the utility model is: to provide a clamping and seam-matching device that can be applicable to the welding of cylindrical workpieces with a large diameter variation range, expand the scope of application, and improve the clamping and seam-matching effect of cylindrical workpieces; moreover, the structure is simple and the layout is reasonable, which is convenient for workers to perform welding.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] The seam clamping device comprises: a seam bracket, two screw clamping mechanisms, two cylinder clamping mechanisms, and at least one working platform mechanism;

[0008] The seam support is provided with a seam passage along the X direction, and the seam passage is used to pass through the cylindrical workpiece;

[0009] The screw clamping mechanism and the oil cylinder clamping mechanism are both installed on the seam bracket and are adapted to each other. One of the screw clamping mechanisms is vertically arranged at the bottom of the seam channel, and one of the oil cylinder clamping mechanisms is vertically arranged at the top of the seam channel corresponding to its position; another of the screw clamping mechanisms is arranged at one side of the seam channel along the Y direction, and another of the oil cylinder clamping mechanisms is arranged at the other side of the seam channel corresponding to its position along the Y direction; when in use, the screw clamping mechanism and the oil cylinder clamping mechanism cooperate with each other to clamp the cylindrical workpiece for seam alignment;

[0010] The working platform mechanism is installed on the outer wall of the seam support in an adjustable position, and the working platform mechanism is arranged close to the seam channel.

[0011] Preferably, the seam bracket comprises a front vertical plate and a rear vertical plate arranged vertically;

[0012] The front vertical plate and the rear vertical plate have the same structure and are both provided with a slit through hole, the two slit through holes are coaxially arranged, there is a spacing between the front vertical plate and the rear vertical plate, and a connecting plate is fixed between them, the connecting plate is arranged close to the slit through hole, and the slit channel is formed between the two slit through holes through the connecting plate;

[0013] Two clamping mounting seats are fixedly arranged on the connecting plate, and one of the clamping mounting seats is equipped with a lead screw clamping mechanism;

[0014] The connecting plate is provided with two clamping and mounting holes, and one of the clamping and mounting holes accommodates and mounts one of the oil cylinder clamping mechanisms.

[0015] Preferably, the two clamping mounting seats and the two clamping mounting holes are equidistantly arranged on the connecting plate along the circumferential direction of the seam channel.

[0016] Preferably, the screw clamping mechanism comprises: two screw nut assemblies and a screw motor;

[0017] The two screw nut assemblies are spaced apart in the X direction, the nuts of the screw nut assemblies are rotatably connected to the clamping mounting seat, one end of the screw of the screw nut assembly extends into the seam channel, and when in use, the screw abuts against the cylindrical workpiece;

[0018] The lead screw motor is mounted on the clamping mounting seat, and the nuts of the two lead screw nut assemblies are drivingly connected to one lead screw motor.

[0019] Preferably, the cylinder clamping mechanism comprises two hydraulic cylinders arranged side by side along the X direction, and the piston rods of the two hydraulic cylinders extend into the seam channel.

[0020] Preferably, a horizontally arranged cylinder motor mounting plate is fixedly provided between the front vertical plate and the rear vertical plate, the cylinder motor mounting plate is arranged on the outer side of the butt-joint channel, and a cylinder motor is mounted on the cylinder motor mounting plate.

[0021] Preferably, at least two platform mounting rods are fixedly disposed on the side walls of the front vertical plate and the rear vertical plate respectively, and the two platform mounting rods are used to be connected to the same working platform mechanism.

[0022] Preferably, the working platform mechanism comprises a working support frame, the position of the working support frame is adjustable, and a horizontally arranged supporting plane is installed on the working support frame.

[0023] Preferably, the supporting plane is a metal mesh grid plate.

[0024] After adopting the above technical solution, the beneficial effects of the utility model are:

[0025] In the utility model, a seam support, two lead screw clamping mechanisms, two oil cylinder clamping mechanisms and at least one working platform mechanism are provided; a seam support is provided with a seam channel along the X direction, and the seam channel is used to pass the cylindrical workpiece; the lead screw clamping mechanism and the oil cylinder clamping mechanism are both installed on the seam support and adapted to each other, one lead screw clamping mechanism is vertically arranged at the bottom of the seam channel, and one oil cylinder clamping mechanism is vertically arranged at the top of the seam channel corresponding to its position; another lead screw clamping mechanism is arranged at one side of the seam channel along the Y direction, and another oil cylinder clamping mechanism is arranged at the other side of the seam channel corresponding to its position along the Y direction; when in use, the lead screw clamping mechanism and the oil cylinder clamping mechanism cooperate with each other to clamp the cylindrical workpiece for seam; the working platform mechanism is installed on the outer wall of the seam support with an adjustable position, and the working platform mechanism is arranged close to the seam channel. When the cylindrical workpiece passes through the seam channel, its opening is set to face upward, so that a cylinder clamping mechanism and a screw clamping mechanism can cooperate with each other to clamp the cylindrical workpiece vertically and along the Y direction, so that the spacing of its opening is reduced or the opening is closed, and cylindrical workpieces of different diameters can be clamped and fixed, which expands the scope of application. After the cylindrical workpiece is clamped, the worker stands on the working platform mechanism and spot welds the opening. During the spot welding process, the clamping force and clamping position of the cylinder clamping mechanism and the screw clamping mechanism on the cylindrical workpiece remain unchanged, and the cylindrical workpiece will not rotate. Therefore, it will not affect the quality of the worker's manual spot welding, ensuring the normal progress of subsequent welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1This is a schematic structural diagram of a clamping seam-aligning device according to an embodiment of the utility model;

[0028] Figure 2 yes Figure 1 Exploded diagram of

[0029] Figure 3 yes Figure 1 A schematic diagram of the structure in another direction;

[0030] Figure 4 yes Figure 1 A cross-sectional view of the middle clamping and aligning device when clamping a cylindrical workpiece for aligning;

[0031] In the figure:

[0032] 1. Seam bracket; 11. Seam channel; 12. Front vertical plate; 13. Rear vertical plate; 131. Seam through hole; 14. Connecting plate; 15. Clamping mounting seat; 16. Clamping mounting hole; 17. Cylinder motor mounting plate; 171. Cylinder motor; 18. Platform mounting rod;

[0033] 2. Screw clamping mechanism; 21. Screw nut assembly; 22. Screw motor;

[0034] 3. Cylinder clamping mechanism; 31. Hydraulic cylinder;

[0035] 4. Working platform mechanism; 41. Working support frame; 42. Support plane; 43. Slider rail assembly;

[0036] 5. Cylindrical workpiece. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0038] like Figures 1 to 4As shown together, the utility model includes: a seam bracket 1, two screw clamping mechanisms 2, two cylinder clamping mechanisms 3, and at least one working platform mechanism 4; wherein, a seam channel 11 is arranged on the seam bracket 1 along the X direction, and the seam channel 11 is used to pass the cylindrical workpiece 5; the screw clamping mechanism 2 and the cylinder clamping mechanism 3 are both installed on the seam bracket 1 and adapted to each other, one screw clamping mechanism 2 is vertically arranged at the bottom of the seam channel 11, and one cylinder clamping mechanism 3 is vertically arranged at the top of the seam channel 11 corresponding to its position; another screw clamping mechanism 2 is arranged on one side of the seam channel 11 along the Y direction, and another cylinder clamping mechanism 3 is arranged on the other side of the seam channel 11 corresponding to its position along the Y direction; when in use, the screw clamping mechanism 2 and the cylinder clamping mechanism 3 cooperate with each other to clamp the cylindrical workpiece 5 for seam alignment; the working platform mechanism 4 is installed on the outer wall of the seam bracket 1 with adjustable position, and the working platform mechanism 4 is arranged close to the seam channel 11. When the cylindrical workpiece 5 passes through the seam channel 11, its opening is set to face upward. Therefore, a cylinder clamping mechanism 3 and a screw clamping mechanism 2 can cooperate with each other to clamp the cylindrical workpiece 5 vertically and along the Y direction, so that the spacing of its opening is reduced or closed. Moreover, cylindrical workpieces 5 of different diameters can be clamped and fixed, which expands the scope of application. After the cylindrical workpiece 5 is clamped, the worker stands on the working platform mechanism 4 and spot welds the opening. During the spot welding process, the clamping force and clamping position of the cylinder clamping mechanism 3 and the screw clamping mechanism 2 on the cylindrical workpiece remain unchanged, and the cylindrical workpiece 5 will not rotate. Therefore, it will not affect the quality of the worker's manual spot welding, ensuring the normal progress of subsequent welding.

[0039] In the utility model, the seam bracket 1 includes a front vertical plate 12 and a rear vertical plate 13 which are arranged vertically; the front vertical plate 12 and the rear vertical plate 13 have the same structure and are both provided with a seam through hole 131, the two pairs of seam through holes 131 are coaxially arranged, there is a spacing between the front vertical plate 12 and the rear vertical plate 13, and a connecting plate 14 is fixed between them, the connecting plate 14 is arranged close to the seam through hole 131, and a seam channel 11 is formed between the two pairs of seam through holes 131 through the connecting plate 14; two clamping mounting seats 15 are fixed on the connecting plate 14, and a screw clamping mechanism 2 is installed on one of the clamping mounting seats 15; two clamping mounting holes 16 are provided on the connecting plate 14, and a cylinder clamping mechanism 3 is accommodated and installed in one of the clamping mounting holes 16.

[0040] In the present application, the connecting plate 14 includes a first connecting plate, a second connecting plate, a third connecting plate and a fourth connecting plate; the first connecting plate, the second connecting plate, the third connecting plate and the fourth connecting plate are all arc-shaped structures and are all concentrically arranged. Among them, the first connecting plate and the second connecting plate are arranged at intervals to form a clamping mounting hole 16; the second connecting plate and the third connecting plate are arranged at intervals to form another clamping mounting hole 16; a clamping mounting seat 15 is fixedly arranged between the third connecting plate and the fourth connecting plate; another clamping mounting seat 15 is fixedly arranged between the fourth connecting plate and the first connecting plate.

[0041] In the present application, by setting two clamping mounting seats 15 and two clamping mounting holes 16, two screw clamping mechanisms 2 and two cylinder clamping mechanisms 3 can be respectively installed at corresponding positions, wherein a clamping mounting seat 15 and a clamping mounting hole 16 are relatively arranged, which is convenient for installing the relatively arranged screw clamping mechanism 2 and cylinder clamping mechanism 3. By setting the screw clamping mechanism 2 and the cylinder clamping mechanism 3, the welding work of the cylindrical workpiece 5 with a large diameter variation range can be satisfied, thereby expanding the scope of application; at the same time, the structure is simple and the layout is reasonable, which is convenient for the installation of the screw clamping mechanism 2 and the cylinder clamping mechanism 3.

[0042] Preferably, the two clamping mounting seats 15 and the two clamping mounting holes 16 are equidistantly arranged on the connecting plate 14 along the circumferential direction of the seam channel 11 .

[0043] The screw clamping mechanism 2 includes: two screw nut assemblies 21 and a screw motor 22; wherein the two screw nut assemblies 21 are arranged at intervals along the X direction, the nuts of the screw nut assemblies 21 are rotatably connected to the clamping mounting seat 15, one end of the screw of the screw nut assembly 21 extends into the slit channel 11, and when in use, the screw abuts against the cylindrical workpiece 5; the screw motor 22 is installed on the clamping mounting seat 15, and the nuts of the two screw nut assemblies 21 are drivingly connected to a screw motor 22. A screw motor 22 drives the two screw nut assemblies 21, so that the two screws move simultaneously, stably support the cylindrical workpiece 5, and cooperate with the cylinder clamping mechanism 3 to achieve stable clamping.

[0044] The clamping mounting seat 15 includes a clamping mounting seat body, which is provided with at least two lead screw through holes and at least one lead screw motor mounting hole, and a nut connecting seat of an annular structure is fixedly provided on the outer side of the lead screw through hole, and the nut connecting seat is coaxially arranged with the lead screw through hole. The lead screw through hole is coaxially arranged with the lead screw of the lead screw nut assembly 21, and the lead screw motor mounting hole is used to install the lead screw motor 22.

[0045] The cylinder clamping mechanism 3 includes two hydraulic cylinders 31 arranged side by side along the X direction, and the piston rods of the two hydraulic cylinders 31 extend into the slot channel 11. A horizontally arranged cylinder motor mounting plate 17 is fixed between the front vertical plate 12 and the rear vertical plate 13. The cylinder motor mounting plate 17 is arranged outside the slot channel 11. A cylinder motor 171 is mounted on the cylinder motor mounting plate 17, which determines the position for the installation of the cylinder motor 171, and has a compact structure. The cylinder motor 171 is used to drive the oil pump to work, drive the hydraulic cylinder 31 to reciprocate along the radial direction of the slot channel 11, so that it cooperates with the lead screw of the lead screw nut assembly 21 to clamp and fix the cylindrical workpiece 5.

[0046] In the present invention, at least two platform mounting rods 18 are fixed on the side walls of the front vertical plate 12 and the rear vertical plate 13, respectively, and the two platform mounting rods 18 are used to connect with the same working platform mechanism 4. Among them, the working platform mechanism 4 includes a working support frame 41, and the position of the working support frame 41 is adjustable. Preferably, two slider rail assemblies 43 are arranged on the side of the working support frame 41 close to the seam bracket 1, one of which is arranged along the Y direction to drive the working support frame 41 to move along the Y direction; the other slider rail assembly 43 is arranged vertically to drive the working support frame 41 to move vertically; thus, the position of the working support frame 41 is adjustable, including adjustable height, and the working support frame 41 can be adjusted to move in the direction close to or away from the seam channel 11, wherein the slider in the slider rail assembly 43 is a self-locking slider. A horizontally arranged support plane 42 is installed on the working support frame 41 for supporting workers to stand, and the support plane 42 is a metal mesh grille plate to facilitate the falling of welding slag.

[0047] The working principle of this application is described below based on the above technical features:

[0048] The cylindrical workpiece 5 is moved into the seam channel 11 after being carried by an external moving mechanism. Before moving, the opening of the cylindrical workpiece 5 is positioned upward to facilitate workers to stand on the supporting plane 42 for welding. After moving into the seam channel 11, a screw in a screw-nut assembly 21 moves upward, and a screw in another screw-nut assembly 21 moves along the Y direction to abut against the cylindrical workpiece 5. Then, a hydraulic cylinder 31 in a cylinder clamping mechanism 3 moves along the Y direction to abut against the cylindrical workpiece 5, and a hydraulic cylinder 31 in another cylinder clamping mechanism 3 moves vertically to abut against the cylindrical workpiece 5. The hydraulic cylinder 31 cooperates with the screw to jointly realize vertical and horizontal clamping of the cylindrical workpiece 5, so that the spacing of its opening is reduced or the opening is closed, meeting the needs of workers to spot weld the opening.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A clamping butt joint device, which relates to the technical field of butt joint welding equipment, and is characterized in that: include: A seam bracket, two screw clamping mechanisms, two cylinder clamping mechanisms, and at least one working platform mechanism; The seam support is provided with a seam passage along the X direction, and the seam passage is used to pass through the cylindrical workpiece; The screw clamping mechanism and the oil cylinder clamping mechanism are both installed on the seam bracket and are adapted to each other. One of the screw clamping mechanisms is vertically arranged at the bottom of the seam channel, and one of the oil cylinder clamping mechanisms is vertically arranged at the top of the seam channel corresponding to its position; another of the screw clamping mechanisms is arranged at one side of the seam channel along the Y direction, and another of the oil cylinder clamping mechanisms is arranged at the other side of the seam channel corresponding to its position along the Y direction; when in use, the screw clamping mechanism and the oil cylinder clamping mechanism cooperate with each other to clamp the cylindrical workpiece for seam alignment; The working platform mechanism is installed on the outer wall of the seam support in an adjustable position, and the working platform mechanism is arranged close to the seam channel.

2. The clamping and seam-aligning device according to claim 1, characterized in that: The seam support comprises a front vertical plate and a rear vertical plate which are arranged vertically; The front vertical plate and the rear vertical plate have the same structure and are both provided with a slit through hole, the two slit through holes are coaxially arranged, there is a spacing between the front vertical plate and the rear vertical plate, and a connecting plate is fixed between them, the connecting plate is arranged close to the slit through hole, and the slit channel is formed between the two slit through holes through the connecting plate; Two clamping mounting seats are fixedly arranged on the connecting plate, and one of the clamping mounting seats is equipped with a lead screw clamping mechanism; The connecting plate is provided with two clamping and mounting holes, and one of the clamping and mounting holes accommodates and mounts one of the oil cylinder clamping mechanisms.

3. The clamping and seam-aligning device according to claim 2, characterized in that: The two clamping mounting seats and the two clamping mounting holes are equidistantly arranged on the connecting plate along the circumferential direction of the seam passage.

4. The clamping and seam-aligning device according to claim 2, characterized in that: The screw clamping mechanism comprises: two screw nut assemblies and a screw motor; The two screw nut assemblies are spaced apart in the X direction, the nuts of the screw nut assemblies are rotatably connected to the clamping mounting seat, one end of the screw of the screw nut assembly extends into the seam channel, and when in use, the screw abuts against the cylindrical workpiece; The lead screw motor is mounted on the clamping mounting seat, and the nuts of the two lead screw nut assemblies are drivingly connected to one lead screw motor.

5. The seam clamping device according to claim 2, characterized in that: The cylinder clamping mechanism comprises two hydraulic cylinders arranged side by side along the X direction, and the piston rods of the two hydraulic cylinders extend into the seam channel.

6. The clamping and seam-aligning device according to claim 2, characterized in that: A horizontally arranged cylinder motor mounting plate is fixedly arranged between the front vertical plate and the rear vertical plate. The cylinder motor mounting plate is arranged on the outer side of the butt-joint channel, and a cylinder motor is mounted on the cylinder motor mounting plate.

7. The seam clamping device according to claim 2, characterized in that: At least two platform mounting rods are fixedly disposed on the side walls of the front vertical plate and the rear vertical plate, respectively, and the two platform mounting rods are used to be connected to the same working platform mechanism.

8. The clamping and seam-aligning device according to claim 7, characterized in that: The working platform mechanism comprises a working support frame, the position of the working support frame is adjustable, and a horizontally arranged supporting plane is installed on the working support frame.

9. The clamping and seam-aligning device according to claim 8, characterized in that: The supporting plane is a metal mesh grid plate.

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