Cylindrical workpiece moving butt-joint machine

Abstract

A cylindrical workpiece moving butt-joint machine relates to the technical field of butt-joint welding equipment and comprises a clamping butt-joint device, and the clamping butt-joint device comprises a butt-joint support, two lead screw clamping mechanisms and two oil cylinder clamping mechanisms. A butt joint channel is arranged on the butt joint bracket; the lead screw clamping mechanisms and the oil cylinder clamping mechanisms are installed on the butt joint support and matched with each other, one lead screw clamping mechanism is arranged at the bottom of the butt joint channel, and the other oil cylinder clamping mechanism is arranged at the top of the butt joint channel. The other lead screw clamping mechanism is arranged on one side of the butt joint channel, and the other oil cylinder clamping mechanism is arranged on the other side of the butt joint channel. And at least one supporting moving trolley is arranged on each of the two sides of the opposite seam support in the X direction. The device can be suitable for welding work of cylindrical workpieces with a large diameter change range, and the application range is expanded; and meanwhile, the cylindrical workpiece can be driven to move automatically, and the labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of seam welding equipment, in particular to a cylindrical workpiece mobile seam welding machine. 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, in the actual production process, many companies will cancel the spot welding process in order to improve production efficiency, so the product quality cannot be guaranteed; or, they use manual spot welding 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 cannot be applied to the welding of cylindrical workpieces with a large diameter variation range. The operation is complicated and cumbersome, resulting in difficulty and high labor intensity during manual welding; moreover, during the spot welding process, workers need to move to each position where spot welding is required, which reduces production efficiency. Utility Model Content

[0005] In view of this, the technical problem to be solved by the utility model is: to provide a cylindrical workpiece mobile seam-matching machine, which can be applicable to the welding of cylindrical workpieces with a large diameter variation range, thereby expanding the scope of application; at the same time, it can drive the cylindrical workpiece to move automatically, thereby reducing labor intensity.

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

[0007] The cylindrical workpiece moving seam-aligning machine comprises a seam-aligning clamping device, the seam-aligning clamping device is vertically arranged, and the seam-aligning clamping device comprises a seam-aligning bracket, two screw clamping mechanisms, and two oil cylinder clamping mechanisms;

[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] Along the X direction, at least one supporting and moving trolley is respectively arranged on both sides of the seam bracket. When in use, the two supporting and moving trolleys jointly carry the cylindrical workpiece and drive it to reciprocate along the X direction.

[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, 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.

[0020] 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.

[0021] 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.

[0022] Preferably, the supporting mobile trolley comprises: a frame, a lifting mechanism, a supporting mechanism, and a translation mechanism;

[0023] The lifting mechanism comprises two lifting cylinders vertically mounted on the frame;

[0024] The support mechanism comprises a support beam arranged along the Y direction, a V-shaped groove arranged along the Y direction is recessed on the top of the support beam, and the bottom of the support beam is fixedly connected to the two lifting cylinders;

[0025] The translation mechanism includes two wheel assemblies arranged on the frame along the X direction, one of the wheel assemblies is connected to the translation motor through a transmission mechanism, and the bottoms of the two wheel assemblies are provided with matching track assemblies, which are arranged along the X direction.

[0026] Preferably, the V-shaped groove comprises two obliquely arranged supporting surfaces, and rollers arranged along the Y direction are rotatably mounted on the supporting surfaces.

[0027] Preferably, the support surface is provided with a recessed receiving groove arranged along the Y direction, and the roller is rotatably installed in the receiving groove.

[0028] After adopting the above technical solution, the beneficial effects of the utility model are:

[0029] Since the utility model includes a clamping and aligning device, the clamping and aligning device is vertically arranged, and the clamping and aligning device includes a aligning bracket, two screw clamping mechanisms, and two cylinder clamping mechanisms; a aligning channel is arranged on the aligning bracket along the X direction, and the aligning channel is used to pass the cylindrical workpiece; the screw clamping mechanism and the cylinder clamping mechanism are both installed on the aligning bracket and adapted to each other, one screw clamping mechanism is arranged vertically at the bottom of the aligning channel, and one cylinder clamping mechanism is arranged vertically at the top of the aligning channel corresponding to its position; another screw clamping mechanism is arranged on one side of the aligning channel along the Y direction, and another cylinder clamping mechanism is arranged on the other side of the aligning channel corresponding to its position along the Y direction; when in use, the screw clamping mechanism and the cylinder clamping mechanism cooperate with each other to clamp the cylindrical workpiece to align the seam; along the X direction, at least one supporting and moving trolley is respectively arranged on both sides of the aligning bracket, and when in use, the two supporting and moving trolleys jointly carry the cylindrical workpiece and drive it to reciprocate along the X direction. After the cylindrical workpiece passes through the seam channel and is placed on the two supporting mobile carriages, its opening is set to face upward. Therefore, 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. Moreover, cylindrical workpieces of different diameters can be clamped and fixed, which expands the scope of application. After clamping, the worker spot welds the opening. After one spot welding is completed, the two supporting mobile carriages drive the cylindrical workpiece to move along the X direction. The worker does not need to move and is ready for the next spot welding. After multiple spot weldings are completed at a certain distance, the cylindrical workpiece with an opening is initially formed into a complete cylindrical workpiece, which improves product quality and reduces labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0031] Figure 1 It is a structural schematic diagram of a cylindrical workpiece moving seam-jointing machine according to an embodiment of the utility model;

[0032] Figure 2 yes Figure 1 The main view of the cylindrical workpiece moving seaming machine when clamping the cylindrical workpiece for seaming;

[0033] Figure 3 yes Figure 1 Side view of the cylindrical workpiece moving seaming machine clamping the cylindrical workpiece for seaming;

[0034] Figure 4 yes Figure 1 A schematic diagram of the structure of the middle clamping and seam-aligning device;

[0035] Figure 5 yes Figure 4 Exploded diagram of

[0036] Figure 6 yes Figure 4 Schematic diagram of the structure in another direction;

[0037] Figure 7 yes Figure 4 A cross-sectional view of the middle clamping and aligning device when clamping a cylindrical workpiece for aligning;

[0038] Figure 8 yes Figure 1 Schematic diagram of the structure of the middle support mobile trolley;

[0039] Fig. 9 yes Figure 8 A top view of

[0040] Fig.10 yes Figure 8 The main view;

[0041] Fig.11 yes Figure 8 Exploded view after removing the track assembly;

[0042] In the figure:

[0043] 1. Clamping and seam-matching device;

[0044] 2. Seam bracket; 21. Seam channel; 22. Front vertical plate; 23. Rear vertical plate; 231. Seam through hole; 24. Connecting plate; 25. Clamping mounting seat; 26. Clamping mounting hole; 27. Cylinder motor mounting plate; 271. Cylinder motor; 28. Platform mounting rod;

[0045] 3. Screw clamping mechanism; 31. Screw nut assembly; 32. Screw motor;

[0046] 4. Cylinder clamping mechanism; 41. Hydraulic cylinder;

[0047] 5. Cylindrical workpiece;

[0048] 6. Supporting mobile trolley; 61. Frame; 62. Lifting mechanism; 621. Lifting cylinder; 63. Supporting mechanism; 631. Supporting beam; 632. V-shaped groove; 633. Supporting surface; 634. Roller; 635. Accommodating groove; 64. Translation mechanism; 641. Wheel assembly; 642. Track assembly; 65. Transmission mechanism; 66. Translation motor;

[0049] 7. Working platform mechanism; 71. Working support frame; 72. Support plane; 73. Slider and rail assembly. DETAILED DESCRIPTION

[0050] 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.

[0051] like Figures 1 to 4 As shown together, the utility model includes a clamping slit device 1, which is vertically arranged. The clamping slit device 1 includes a slit bracket 2, two screw clamping mechanisms 3, and two cylinder clamping mechanisms 4; wherein, a slit channel 21 is arranged on the slit bracket 2 along the X direction, and the slit channel 21 is used to pass a cylindrical workpiece 5; the screw clamping mechanism 3 and the cylinder clamping mechanism 4 are both installed on the slit bracket 2 and adapted to each other, a screw clamping mechanism 3 is vertically arranged at the bottom of the slit channel 21, and a cylinder clamping mechanism 4 is vertically arranged with it. The position is correspondingly arranged at the top of the seam channel 21; another screw clamping mechanism 3 is arranged on one side of the seam channel 21 along the Y direction, and another cylinder clamping mechanism 4 is arranged on the other side of the seam channel 21 corresponding to its position along the Y direction; when in use, the screw clamping mechanism 3 and the cylinder clamping mechanism 4 cooperate with each other to clamp the cylindrical workpiece 5 for seam alignment; along the X direction, at least one supporting moving trolley 6 is respectively arranged on both sides of the seam bracket 2. When in use, the two supporting moving trolleys 6 jointly carry the cylindrical workpiece 5 and drive it to reciprocate along the X direction.

[0052] After the cylindrical workpiece 5 passes through the seam channel 21 and is placed on the two supporting mobile carriages 6, it is preferably set to face upward, so that a cylinder clamping mechanism 4 and a screw clamping mechanism 3 can cooperate in pairs to clamp the cylindrical workpiece 5 vertically and along the Y direction, so that the spacing of its openings is reduced or the openings are closed, and cylindrical workpieces 5 of different diameters can be clamped and fixed, which expands the scope of application. After clamping, the worker spot welds the opening. After one spot welding is completed, the two supporting mobile carriages 6 drive the cylindrical workpiece 5 to move along the X direction. The worker does not need to move and is ready for the next spot welding. After multiple spot weldings are completed at a certain distance, the cylindrical workpiece 5 with an opening is initially formed into a complete cylindrical workpiece 5, which improves product quality and reduces labor intensity.

[0053] like Figures 1 to 7As shown together, in the present application, the seam bracket 2 includes a front vertical plate 22 and a rear vertical plate 23 which are arranged vertically; the front vertical plate 22 and the rear vertical plate 23 have the same structure and are both provided with a seam through hole 231, the two pairs of seam through holes 231 are coaxially arranged, there is a spacing between the front vertical plate 22 and the rear vertical plate 23 and a connecting plate 24 is fixed between them, the connecting plate 24 is arranged close to the seam through hole 231, and a seam channel 21 is formed between the two pairs of seam through holes 231 through the connecting plate 24; two clamping mounting seats 25 are fixed on the connecting plate 24, and a screw clamping mechanism 3 is installed on one of the clamping mounting seats 25; two clamping mounting holes 26 are provided on the connecting plate 24, and a cylinder clamping mechanism 4 is accommodated and installed in one of the clamping mounting holes 26.

[0054] In the present application, the connecting plate 24 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 26; the second connecting plate and the third connecting plate are arranged at intervals to form another clamping mounting hole 26; a clamping mounting seat 25 is fixedly arranged between the third connecting plate and the fourth connecting plate; another clamping mounting seat 25 is fixedly arranged between the fourth connecting plate and the first connecting plate.

[0055] By setting two clamping mounting seats 25 and two clamping mounting holes 26, the two screw clamping mechanisms 3 and the two cylinder clamping mechanisms 4 can be respectively installed at corresponding positions, wherein a clamping mounting seat 25 and a clamping mounting hole 26 are relatively arranged, which is convenient for installing the relatively arranged screw clamping mechanisms 3 and cylinder clamping mechanisms 4. By setting the screw clamping mechanisms 3 and the cylinder clamping mechanisms 4, the welding work of cylindrical workpieces 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 mechanisms 3 and the cylinder clamping mechanisms 4.

[0056] Preferably, two clamping mounting seats 25 and two clamping mounting holes 26 are equidistantly arranged on the connecting plate 24 along the circumferential direction of the seam passage 21 .

[0057] The screw clamping mechanism 3 includes: two screw nut assemblies 31 and a screw motor 32; wherein the two screw nut assemblies 31 are arranged at intervals along the X direction, the nuts of the screw nut assemblies 31 are rotatably connected to the clamping mounting seat 25, and one end of the screw of the screw nut assembly 31 extends into the seam channel 21. When in use, the screw abuts against the cylindrical workpiece 5; the screw motor 32 is installed on the clamping mounting seat 25, and the nuts of the two screw nut assemblies 31 are drivingly connected to a screw motor 32.

[0058] The clamping mounting seat 25 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 31, and the lead screw motor mounting hole is used to install the lead screw motor 32.

[0059] The cylinder clamping mechanism 4 includes two hydraulic cylinders 41 arranged side by side along the X direction, and the piston rods of the two hydraulic cylinders 41 extend into the slot channel 21. A horizontally arranged cylinder motor mounting plate 27 is fixed between the front vertical plate 22 and the rear vertical plate 23. The cylinder motor mounting plate 27 is arranged outside the slot channel 21. A cylinder motor 271 is mounted on the cylinder motor mounting plate 27, which determines the position for the installation of the cylinder motor 271, and has a compact structure. The cylinder motor 271 is used to drive the oil pump to work, drive the hydraulic cylinder 41 to reciprocate along the radial direction of the slot channel 21, so that it cooperates with the lead screw of the lead screw nut assembly 31 to clamp and fix the cylindrical workpiece 5.

[0060] In the present application, at least two platform mounting rods 28 are fixed on the side walls of the front vertical plate 22 and the rear vertical plate 23, respectively, and the two platform mounting rods 28 are used to connect with the same working platform mechanism 7. Among them, the working platform mechanism 7 includes a working support frame 71, and the position of the working support frame 71 is adjustable. Preferably, two slider rail assemblies 73 are arranged on the side of the working support frame 71 close to the seam bracket 2, one of which is arranged along the Y direction to drive the working support frame 71 to move along the Y direction; the other slider rail assembly 73 is arranged vertically to drive the working support frame 71 to move vertically; thus, the position of the working support frame 71 is adjustable, including adjustable height, and the working support frame 71 can be adjusted to move in the direction close to or away from the seam channel 21, wherein the slider in the slider rail assembly 73 is a self-locking slider. A horizontally arranged support plane 72 is installed on the working support frame 71 for supporting workers to stand, and the support plane 72 is a metal mesh grid plate to facilitate the falling of welding slag.

[0061] like Figure 1 , Figures 8 to 11As shown together, in the present application, the supporting mobile trolley 6 includes: a frame 61, a lifting mechanism 62, a supporting mechanism 63, and a translation mechanism 64; wherein the lifting mechanism 62 includes two lifting cylinders 621 vertically mounted on the frame; the supporting mechanism 63 includes a supporting beam 631 arranged along the Y direction, the top of the supporting beam 631 is recessed with a V-shaped groove 632 arranged along the Y direction, and the bottom of the supporting beam 631 is fixedly connected to the two lifting cylinders 621; the translation mechanism 64 includes two wheel assemblies 641 arranged on the frame 61 along the X direction, one of the wheel assemblies 641 is transmission-connected to the translation motor 66 through a transmission mechanism 65, and the bottom of the two wheel assemblies 641 is provided with a track assembly 642 matched therewith, and the track assembly 642 is arranged along the X direction.

[0062] The support beam 631 can meet the requirements for supporting the cylindrical workpiece 5. At the same time, the support beam 631 is fixedly connected to the two lifting cylinders 621. The two lifting cylinders 621 can change the support height of the support beam 631. For cylindrical workpieces 5 of different sizes, their axes can be ensured to be located at the center of the clamping and aligning device 1, meeting the requirements of the subsequent clamping and aligning device 1 for clamping and aligning them, and also improving the accuracy of the aligning and the welding quality. Moreover, the vehicle track assembly 642 and the wheel assembly 641 are adapted to drive the cylindrical workpiece 5 to move through the support beam 631, which changes the original form of using multiple transmission rollers, reduces production costs, and reduces occupied space.

[0063] Preferably, the angle of the V-groove 632 on the top of the support beam 631 is 145°. The setting of the V-groove 632 can prevent the cylindrical workpiece 5 from rotating, and can ensure that the opening position on the cylindrical workpiece 5 remains unchanged. If an automatic spot welding mechanism is used, the opening can be made to correspond to the welding mechanism, thereby improving the quality of spot welding; if manual spot welding is used, there is no need to search for openings everywhere, thereby reducing the labor intensity of workers. The V-groove 632 with an angle of 145° can prevent the cylindrical workpiece 5 of various sizes from rotating.

[0064] The V-shaped groove 632 includes two obliquely arranged supporting surfaces 633 , on which a roller 634 arranged along the Y direction is rotatably mounted; preferably, a receiving groove 635 arranged along the Y direction is concavely provided on the supporting surface 633 , in which a roller 634 is rotatably mounted.

[0065] When the supporting mobile trolley 6 is in use, at least two supporting mobile trolleys 6 are used to support the cylindrical workpiece 5. The two trolleys are supported at both ends of the cylindrical workpiece 5 respectively, and the two trolleys move at the same time to drive and transport the cylindrical workpiece 5. When the moving speeds of the two trolleys are consistent, since the cylindrical workpiece 5 is long and heavy, the friction force generated by its own weight applied to the supporting crossbeam 631 can ensure that there is no relative movement between it and the trolley, and the setting of the roller 634 will not make the trolley unable to drive the cylindrical workpiece 5 to move. However, when the moving speeds of the two trolleys are inconsistent, if the moving speed of one of the trolleys is relatively fast, this trolley will produce a traction force along the X direction on the cylindrical workpiece 5, so that the cylindrical workpiece 5 has the possibility of moving along the X direction. Among them, if the traction force is not greater than the friction force, the cylindrical workpiece 5 will not be displaced. If the traction force is greater than the friction force, it will be able to be displaced due to the setting of the roller 634. Then, if the roller 634 is not provided, the outer wall of the cylindrical workpiece 5 is in surface contact with the support surface 633. When the cylindrical workpiece 5 is displaced, the outer wall of the cylindrical workpiece 5 and the support surface 633 directly rub against each other, which can cause damage to the outer wall of the cylindrical workpiece 5. In the present application, a roller 634 is provided, and there is line contact between the outer wall of the cylindrical workpiece 5 and the roller 634, and the contact area is small. Moreover, when the cylindrical workpiece 5 is displaced, the roller 634 can rotate on itself, which can ensure that the cylindrical workpiece 5 moves along the X direction, prevent it from rubbing against the support surface 633, and improve the product quality of the cylindrical workpiece 5.

[0066] Preferably, the vertical distance a between the outer wall of the roller 634 and the support surface 633 is 0 to 10 mm. The setting of the roller 634 will not make the distance between the cylindrical workpiece 5 and the support surface 633 too large, and will not affect the stability of the support beam 631 supporting the cylindrical workpiece 5, thereby improving the use effect.

[0067] The wheel assembly 641 includes a left wheel and a right wheel which are rotatably mounted on the frame 61 along the Y direction, and an axle is connected between the left wheel and the right wheel.

[0068] The transmission mechanism 65 includes: a driving sprocket, a driven sprocket, and a transmission chain; wherein the driving sprocket is fixedly connected to the power shaft of the translation motor 66; the driven sprocket is coaxially fixedly connected to the axle; and the transmission chain is wound between the driving sprocket and the driven sprocket.

[0069] The working principle of this application is described below based on the above technical features:

[0070] The cylindrical workpiece 5 passes through the seam-matching channel 21 and is placed on two supporting movable carriages 6. Before the cylindrical workpiece 5 is moved by the two supporting movable carriages 6, the opening of the cylindrical workpiece 5 is positioned upwards to facilitate workers to stand on the supporting plane 72 for welding. In the process of the cylindrical workpiece 5 being moved by the two supporting movable carriages 6, the two supporting movable carriages 6 stop after moving a certain distance, a lead screw in one lead screw and nut assembly 31 moves upward, and a lead screw in another lead screw and nut assembly 31 moves along the Y direction to abut against the cylindrical workpiece 5. Then, a hydraulic cylinder 41 in one cylinder clamping mechanism 4 moves along the Y direction to abut against the cylindrical workpiece 5, and a hydraulic cylinder 41 in another cylinder clamping mechanism 4 moves vertically to abut against the cylindrical workpiece 5. The hydraulic cylinder 41 cooperates with the lead 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, and a seam-matching process is completed. After one seam alignment is completed, the two supporting movable carriages 6 drive the cylindrical workpiece 5 to continue to move along the X direction, and multiple seam alignments are performed on the cylindrical workpiece 5, so that the spacing of the openings is reduced or the openings are closed.

[0071] After multiple seaming, the two supporting mobile carriages 6 drive the cylindrical workpiece 5 back to the initial position and perform the seaming operation again, including performing multiple seaming at different positions on the cylindrical workpiece 5. During the seaming, the worker stands on the supporting plane 72 to perform spot welding, and the opening of the cylindrical workpiece 5 is closed by seaming to complete the spot welding operation. In this process, the cylindrical workpiece 5 needs to be seamed twice. The first seaming is to reduce the opening spacing, and the second seaming is for spot welding. If seaming and spot welding are performed directly, it is easy to reduce the quality of spot welding or unsuccessful spot welding.

[0072] 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. Cylindrical workpiece moving seam-jointing machine, characterized in that: It includes a seam clamping device, which is vertically arranged and includes a seam bracket, two screw clamping mechanisms, and two oil cylinder clamping mechanisms; 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; Along the X direction, at least one supporting and moving trolley is respectively arranged on both sides of the seam bracket. When in use, the two supporting and moving trolleys jointly carry the cylindrical workpiece and drive it to reciprocate along the X direction.

2. The cylindrical workpiece moving seam-jointing machine 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 cylindrical workpiece moving seam-jointing machine 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 cylindrical workpiece moving seam-jointing machine 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 cylindrical workpiece moving seam-jointing machine 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.

6. The cylindrical workpiece moving seam-jointing machine according to claim 2, characterized in that: At least two platform mounting rods are fixedly arranged 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.

7. The cylindrical workpiece moving seaming machine according to claim 6, 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.

8. The cylindrical workpiece moving seaming machine according to claim 1, characterized in that: The supporting mobile trolley comprises: a frame, a lifting mechanism, a supporting mechanism, and a translation mechanism; The lifting mechanism comprises two lifting cylinders vertically mounted on the frame; The support mechanism comprises a support beam arranged along the Y direction, a V-shaped groove arranged along the Y direction is recessed on the top of the support beam, and the bottom of the support beam is fixedly connected to the two lifting cylinders; The translation mechanism includes two wheel assemblies arranged on the frame along the X direction, one of the wheel assemblies is connected to the translation motor through a transmission mechanism, and the bottoms of the two wheel assemblies are provided with matching track assemblies, which are arranged along the X direction.

9. The cylindrical workpiece moving seaming machine according to claim 8, characterized in that: The V-shaped groove comprises two obliquely arranged supporting surfaces, and a rotating roller arranged along the Y direction is rotatably mounted on the supporting surfaces.

10. The cylindrical workpiece moving seaming machine according to claim 9, characterized in that: The supporting surface is concavely provided with a receiving groove arranged along the Y direction, and the rotating roller is rotatably installed in the receiving groove.

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