A circumferential seam welding device

Abstract

The present invention discloses a circumferential seam welding device, which comprises a machine table, a first welding device, a clamping and butt-joint device, and a clamping and rotating device. The first welding device is arranged on the machine table, the clamping and butt-joint device is arranged on the machine table, and the clamping and butt-joint device can clamp two cylindrical workpieces so that the two cylindrical workpieces are butt-jointed end to end to form a circumferential seam. The clamping and rotating device is arranged on the machine table, and the clamping and rotating device can clamp the two cylindrical workpieces and can drive the two cylindrical workpieces to rotate in the same direction so that the first welding device welds the circumferential seam. Through the above structure, the welding precision of the circumferential seam can be increased, and the participation of manual labor is reduced, thereby reducing the production cost.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and particularly relates to a circumferential seam welding equipment. Background Art

[0002] A circumferential seam is a weld seam arranged in a circle at the joint of the heads and tails of two cylindrical workpieces. During the process of welding the circumferential seam, it is often necessary to manually move the workpiece and change the welding position for welding. However, this way of manually moving the workpiece and changing the welding position will affect the welding accuracy of the circumferential seam and increase the production cost. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a circumferential seam welding equipment, which can improve the welding accuracy of the circumferential seam and reduce the production cost.

[0004] A circumferential seam welding equipment according to an embodiment of the present invention includes a machine table, a first welding device, a clamping and docking device, and a clamping and rotating device. The first welding device is arranged on the machine table, the clamping and docking device is arranged on the machine table, the clamping and docking device can clamp two cylindrical workpieces so that the two cylindrical workpieces are butt-jointed at the head and tail to form a circumferential seam, the clamping and rotating device is arranged on the machine table, the clamping and rotating device can clamp the two cylindrical workpieces and can drive the two cylindrical workpieces to rotate in the same direction so that the first welding device welds the circumferential seam.

[0005] A circumferential seam welding equipment according to an embodiment of the present invention has at least the following beneficial effects: the clamping and rotating device can clamp two cylindrical workpieces and can drive the two cylindrical workpieces to rotate in the same direction so that the first welding device welds the circumferential seam. Through the above structure, the welding accuracy of the circumferential seam can be improved, and the participation of manual labor is reduced, thereby reducing the production cost.

[0006] According to some embodiments of the present invention, the clamping and docking device includes two first clamping components. Both of the two first clamping components are arranged on the machine table and are oppositely arranged. The first clamping component is provided with a first clamping through hole. The head end of one of the cylindrical workpieces is rotatably inserted through one of the first clamping through holes, and the tail end of the other cylindrical workpiece is rotatably inserted through the other first clamping through hole so that the two cylindrical workpieces are butt-jointed at the head and tail to form the circumferential seam.

[0007] According to some embodiments of the present invention, the first clamping assembly includes a first lower cover and a first upper cover. The first lower cover is provided on the machine table. The first lower cover is provided with a first notch, and the first upper cover is provided with a second notch corresponding to the first notch. One end of the first upper cover is pivotally connected to one end of the first lower cover. When the first upper cover rotates to abut against the first lower cover, the first notch and the second notch enclose the first clamping through hole.

[0008] According to some embodiments of the present invention, rotatable first limiting rollers are provided on both sides of the first upper cover and the first lower cover. The total number of the first limiting rollers on the same side of the first upper cover and the first lower cover is at least three. At least three of the first limiting rollers are evenly arranged around the axis of the first clamping through hole. When the cylindrical welded part passes through the first clamping through hole, the cylindrical welded part abuts against the surfaces of the first limiting rollers.

[0009] According to some embodiments of the present invention, the clamping and rotating device includes two clamping mechanisms and two rotating mechanisms. The two clamping mechanisms are respectively arranged on both sides of the clamping and docking device. The two clamping mechanisms are arranged oppositely. One of the clamping mechanisms can clamp the head end of one of the cylindrical welded parts, and the other clamping mechanism can clamp the tail end of the other cylindrical welded part. The two rotating mechanisms are both arranged on the machine table. The two rotating mechanisms are connected to the two clamping mechanisms in a one-to-one correspondence. The two rotating mechanisms can drive the two clamping mechanisms to rotate in the same direction to drive the two cylindrical welded parts to rotate in the same direction.

[0010] According to some embodiments of the present invention, the rotating mechanism includes a first driving member and a connecting frame. The first driving member is provided on the machine table. The connecting frame is connected to the output end of the first driving member. The clamping mechanism is provided on the connecting frame. The first driving member can drive the connecting frame to rotate to drive the clamping mechanism to rotate.

[0011] According to some embodiments of the present invention, the clamping mechanism includes two clamping blocks and a second driving member. The two clamping blocks are both slidably arranged on the connecting frame. The two clamping blocks are arranged oppositely. The second driving member is provided on the connecting frame. The two clamping blocks are both connected to the output end of the second driving member. The second driving member can drive the two clamping blocks to slide towards each other to clamp the cylindrical welded part.

[0012] According to some embodiments of the present invention, a second clamping assembly is further included. The second clamping assembly is provided on the machine table, and the second clamping assembly is located between the clamping mechanism and the clamping and docking device.

[0013] According to some embodiments of the present invention, it further includes a first light-shielding device, which is arranged on the machine table, and the first light-shielding device can block the glare generated when the first welding device welds the circumferential seam.

[0014] According to some embodiments of the present invention, the first light-shielding device includes a light-shielding plate and a third driving member. The third driving member is arranged on the machine table, and the output end of the third driving member is connected to the light-shielding plate. The third driving member can drive the light-shielding plate to move upward to block the glare generated when the first welding device welds the circumferential seam. Description of the Drawings

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and be easily understood from the description of the embodiments in conjunction with the following drawings, where:

[0016] Figure 1 is a structural diagram of an embodiment of the circumferential seam welding equipment of the present invention;

[0017] Figure 2 is Figure 1 an enlarged view of part A shown in

[0018] Figure 3 is Figure 1 a structural diagram of the clamping and docking device, the first welding device and the machine table shown in

[0019] Figure 4 is Figure 1 a structural diagram of the clamping mechanism, the rotating mechanism and the machine table shown in

[0020] Figure 5 is Figure 4 another structural diagram of the clamping mechanism, the rotating mechanism and the machine table shown in

[0021] Figure 6 is Figure 1 a structural diagram of the second clamping assembly and the machine table shown in

[0022] Figure 7 is Figure 6 another structural diagram of the second clamping assembly and the machine table shown in

[0023] Reference Signs:

[0024] Machine table 100, sub-machine table 110, first bearing platform 120, second bearing platform 130, support plate 140, vertical beam 141, driving and positioning assembly 142, third connecting member 142A, blocking block 142B, seventh driving member 142C, eighth driving member 142D, ninth driving member 143, third bearing platform 150, positioning bolt 151;

[0025] The first welding device 210, welding torch 211, torch moving mechanism 212, torch clamping assembly 212A, slider 212A, clamping plate 212A2, first connecting member 212B, second connecting member 212C, fourth driving member 212D, fifth driving member 212E, second welding device 220;

[0026] The clamping and butt - joint device 300, first clamping assembly 310, first lower cover 311, first upper cover 312, first clamping through - hole 313;

[0027] The clamping and rotating device 400, clamping mechanism 410, clamping block 411, second driving member 412, connecting block 412A, swing arm 412B, rotating mechanism 420, first driving member 421, connecting frame 422, vertical plate 422A, connecting cross - bar 422B;

[0028] The first limiting roller 510, second limiting roller 520;

[0029] The second clamping assembly 600, second lower cover 610, second upper cover 620, second clamping through - hole 630;

[0030] The first light - shielding device 710, light - shielding plate 711, third driving member 712, second light - shielding device 720;

[0031] The welding machine 800;

[0032] The grinding mechanism 900, clamping plate 910, grinding opening 911, sixth driving member 920;

[0033] The cylindrical welded part a, circumferential weld b. Specific embodiments

[0034] This part will describe the specific embodiments of the present invention in detail. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0035] In the description of the present invention, if there is a description of the first, second, third, fourth, fifth, etc., it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0036] In the description of the present invention, it should be understood that when it comes to the description of directions, such as the directions or positional relationships indicated by up, down, front, back, left, right, etc., they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be construed as a limitation to the present invention.

[0037] In the present invention, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense. For example, they can be directly connected, or indirectly connected through an intermediate medium; they can be fixedly connected, or detachably connected, or integrally formed; they can be mechanically connected; they can be the communication inside two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0038] Refer to Figures 1 to 7 , an annular seam welding device according to an embodiment of the present invention includes a machine table 100, a first welding device 210, a clamping and butt-joint device 300, and a clamping and rotating device 400.

[0039] The first welding device 210 is arranged on the machine table 100, the clamping and butt-joint device 300 is arranged on the machine table 100, the clamping and butt-joint device 300 can clamp two cylindrical workpieces a so that the two cylindrical workpieces a are butt-jointed end to end to form an annular seam b, the clamping and rotating device 400 is arranged on the machine table 100, the clamping and rotating device 400 can clamp the two cylindrical workpieces a, and can drive the two cylindrical workpieces a to rotate in the same direction so that the first welding device 210 welds the annular seam b.

[0040] It should be noted that when the two cylindrical workpieces a rotate in the same direction, the two cylindrical workpieces a remain in a relatively stationary state.

[0041] The clamping and rotating device 400 can clamp the two cylindrical workpieces a, and can drive the two cylindrical workpieces a to rotate in the same direction so that the first welding device 210 welds the annular seam b. Through the above structure, the welding precision of the annular seam b can be increased, and the manual participation is reduced, thereby reducing the production cost.

[0042] The machine table 100 is formed by splicing three sub-machine tables 110 end to end.

[0043] In some embodiments, the number of the sub-machine tables 110 can be set according to the length of the cylindrical workpiece a to cope with different span situations of the cylindrical workpiece a.

[0044] A first bearing platform 120 is arranged on the machine table 100.

[0045] The first welding device 210 includes a welding torch 211. The welding torch 211 is disposed on the first bearing platform 120. The welding torch 211 is connected to a welding machine 800 and can weld the circumferential seam b.

[0046] In this embodiment, in order to facilitate adjusting the welding torch 211 to a position corresponding to the circumferential seam b, the first welding device 210 further includes a torch moving mechanism 212.

[0047] The torch moving mechanism 212 includes a torch clamping assembly 212A, a first connecting member 212B, a second connecting member 212C, a fourth driving member 212D, and a fifth driving member 212E.

[0048] Refer to Figure 3 , the first connecting member 212B is slidably disposed on the first bearing platform 120. One end of the first connecting member 212B is provided with a convex block 212B1. The second connecting member 212C is provided with a convex plate 212C1 corresponding to the convex block 212B1. The convex plate 212C1 is located on one side of the convex block 212B1. The convex plate 212C1 is provided with an arc-shaped through groove. The convex plate 212C1 and the convex block 212B1 are penetrated by a first fastener, and the first fastener can move in the arc-shaped through groove. The torch clamping assembly 212A can clamp the welding torch 211. The torch clamping assembly 212A is slidably disposed on the second connecting member 212C. The fourth driving member 212D is disposed on the first bearing platform 120. The output end of the fourth driving member 212D is connected to the first connecting member 212B. The fourth driving member 212D can drive the first connecting member 212B to slide along the width direction of the machine table 100. The fifth driving member 212E is disposed on the second connecting member 212C. The output end of the fifth driving member 212E is connected to the torch clamping assembly 212A. The fifth driving member 212E can drive the torch clamping assembly 212A to slide along the length direction of the second connecting member 212C. Among them, the fourth driving member 212D can be a cylinder, a hydraulic cylinder, an electric push rod, etc.; the fifth driving member 212E can be a cylinder, a hydraulic cylinder, an electric push rod, etc.; the first fastener can be a bolt, etc.

[0049] The torch clamping assembly 212A includes a slider 212A1 and a clamping plate 212A2.

[0050] The slider 212A1 is slidably disposed on the above-mentioned second connecting member 212C. The clamping plate 212A2 is connected to the slider 212A1 through a second fastener, so that the welding torch 211 is clamped between the clamping plate 212A2 and the slider 212A1. The slider 212A1 is connected to the output end of the fifth driving member 212E. The fifth driving member 212E can drive the slider 212A1 to slide along the length direction of the second connecting member 212C. Among them, the second fastener can be a bolt, etc.

[0051] A second bearing platform 130 is provided on the machine table 100.

[0052] The clamping and docking device 300 includes two first clamping components 310.

[0053] Referring to Figure 3 , both of the two first clamping components 310 are arranged on the second bearing block 130. The two first clamping components 310 are arranged oppositely. The first clamping component 310 is provided with a first clamping through hole 313. The head end of one cylindrical weldment a and the tail end of the other cylindrical weldment a are respectively rotatably inserted into the two first clamping through holes 313, so that the head and tail of the two cylindrical weldments a are butt-jointed to form a circumferential weld b.

[0054] It should be noted that the head end of one cylindrical weldment a and the tail end of the other cylindrical weldment a are respectively rotatably inserted into the two first clamping through holes 313, that is, the head end of one cylindrical weldment a is rotatably inserted into one of the first clamping through holes 313, and the tail end of the other cylindrical weldment a is rotatably inserted into the other first clamping through hole 313.

[0055] The first clamping component 310 includes a first lower cover 311 and a first upper cover 312.

[0056] The first lower cover 311 is arranged on the second bearing block 130. The first lower cover 311 is provided with a first notch. The first upper cover 312 is provided with a second notch corresponding to the first notch. One end of the first upper cover 312 is pivotally connected to one end of the first lower cover 311. When the first upper cover 312 rotates to abut against the first lower cover 311, the first notch and the second notch enclose the first clamping through hole 313.

[0057] In this embodiment, the other end of the first upper cover 312 is provided with a first mounting hole, and the other end of the first lower cover 311 is provided with a second mounting hole corresponding to the first mounting hole. When the first upper cover 312 rotates to abut against the first lower cover 311, a third fastener is inserted through the first mounting hole and the second mounting hole to connect the first lower cover 311 and the first upper cover 312. Among them, the third fastener can be set as a bolt or the like.

[0058] In some embodiments, one of the other end of the first upper cover 312 and the other end of the first lower cover 311 is provided with a clamping block, and the other is provided with a clamping hole matching the clamping block. When the first upper cover 312 rotates to abut against the first lower cover 311, the clamping block is clamped in the clamping hole to connect the first lower cover 311 and the first upper cover 312.

[0059] To prevent the cylindrical weldment a from rubbing against the hole wall of the first clamping through hole 313 during rotation, referring to Figure 3, on both sides of the first upper cover 312 and the first lower cover 311, rotatable first limiting rollers 510 are provided. The total number of first limiting rollers 510 on the same side of the first upper cover 312 and the first lower cover 311 is four. The four first limiting rollers 510 are evenly arranged around the axis of the first clamping through hole 313. When the cylindrical welded part a passes through the first clamping through hole 313, the cylindrical welded part a abuts against the surface of the first limiting rollers 510.

[0060] In some embodiments, the total number of first limiting rollers 510 on the same side of the first upper cover 312 and the first lower cover 311 can be set to three, five, etc.

[0061] In this embodiment, a first light-shielding device 710 is further included. The first light-shielding device 710 is arranged on the second bearing platform 130, and the first light-shielding device 710 can block the glare generated when the first welding device 210 welds the circumferential seam b.

[0062] Specifically, referring to Figure 1 and Figure 3 , the first light-shielding device 710 includes a light-shielding plate 711 and a third driving member 712. The third driving member 712 is arranged on the second bearing platform 130. The output end of the third driving member 712 is connected to the light-shielding plate 711. The third driving member 712 can drive the light-shielding plate 711 to move upward to block the glare generated when the first welding device 210 welds the circumferential seam b. Among them, the third driving member 712 can be set as a cylinder, a hydraulic cylinder, an electric push rod, etc.

[0063] In this embodiment, in order to make the head and tail welding joints of the two cylindrical welded parts a flatter, a grinding mechanism 900 is further included.

[0064] The grinding mechanism 900 includes a clamping plate 910 and a sixth driving member 920.

[0065] The clamping plate 910 is provided with an upward grinding opening 911. The grinding opening 911 cooperates with the cylindrical welded part a. The sixth driving member 920 is arranged on the second bearing platform 130. The output end of the sixth driving member 920 is connected to the clamping plate 910. The sixth driving member 920 can drive the clamping plate 910 to move upward, so that both of the two cylindrical welded parts a abut against the grinding opening 911, and the circumferential seam b and the grinding opening 911 are located in the same plane. Among them, the sixth driving member 920 can be set as a cylinder, a hydraulic cylinder, an electric push rod, etc.

[0066] Through the above structure, when the two cylindrical welded parts a rotate in the same direction and the welding torch 211 welds the circumferential seam b, the protruding welding slag on the circumferential seam b will be ground flat at the grinding opening 911, so that the head and tail welding joints of the two cylindrical welded parts a are flatter.

[0067] Two supporting plates 140 are slidably arranged on the machine table 100.

[0068] The clamping and rotating device 400 includes two clamping mechanisms 410 and two rotating mechanisms 420.

[0069] Referring to Figure 1 、 Figure 4 and Figure 5 , the two clamping mechanisms 410 are respectively arranged on both sides of the clamping and docking device 300. The two clamping mechanisms 410 are arranged oppositely. One of the clamping mechanisms 410 can clamp the head end of one cylindrical welded part a, and the other clamping mechanism 410 can clamp the tail end of the other cylindrical welded part a. The two rotating mechanisms 420 are respectively arranged on the two supporting plates 140 in one-to-one correspondence. The two rotating mechanisms 420 are connected to the two clamping mechanisms 410 in one-to-one correspondence. The two rotating mechanisms 420 can drive the two clamping mechanisms 410 to rotate in the same direction, so as to drive the two cylindrical welded parts a to rotate in the same direction.

[0070] A vertical beam 141 is slidably arranged on the supporting plate 140.

[0071] The rotating mechanism 420 includes a first driving member 421 and a connecting frame 422.

[0072] The first driving member 421 is arranged on one side of the vertical beam 141. The output end of the first driving member 421 passes through the vertical beam 141 and is connected to the connecting frame 422 located on the other side of the vertical beam 141. The clamping mechanism 410 is arranged on the connecting frame 422. The first driving member 421 can drive the connecting frame 422 to rotate, so as to drive the clamping mechanism 410 to rotate. Among them, the first driving member 421 is set as a motor.

[0073] It should be noted that the first driving member 421 is arranged on one side of the vertical beam 141, which means that the first driving member 421 is arranged on the side of the vertical beam 141 far from the clamping and docking device 300; located on the other side of the vertical beam 141, which means the side of the vertical beam 141 close to the clamping and docking device 300.

[0074] The connecting frame 422 includes two relatively arranged vertical plates 422A and four connecting cross bars 422B.

[0075] The two vertical plates 422A are arranged oppositely. The four connecting cross bars 422B are all arranged between the two vertical plates 422A. The two ends of the connecting cross bar 422B are respectively fixedly connected to the two vertical plates 422A. The vertical plate 422A far from the clamping and docking device 300 is connected to the output end of the first driving member 421.

[0076] In some embodiments, the number of the connecting cross bars 422B can be set to three, five, etc.

[0077] The clamping mechanism 410 includes two clamping blocks 411 and a second driving member 412.

[0078] Two clamping blocks 411 are both slidably arranged on the vertical plate 422A close to the clamping and docking device 300. The two clamping blocks 411 are arranged oppositely. The second driving member 412 is arranged on the vertical plate 422A far from the clamping and docking device 300. Both clamping blocks 411 are connected to the output end of the second driving member 412. The second driving member 412 can drive the two clamping blocks 411 to slide towards each other to clamp the cylindrical welded part a. Among them, the second driving member 412 can be set as a cylinder, a hydraulic cylinder, an electric push rod, etc.

[0079] Both clamping blocks 411 are connected to the output end of the second driving member 412. Specifically, a connecting block 412A is fixedly arranged at the output end of the second driving member 412. Two swing arms 412B are rotatably connected to the connecting block 412A. The two swing arms 412B are respectively rotatably connected to the two clamping blocks 411. The second driving member 412 can drive the connecting block 412A to move to drive the two swing arms 412B to swing towards each other, so that the two clamping blocks 411 slide towards each other.

[0080] In this embodiment, one end of the swing arm 412B is rotatably connected to the connecting block 412A, and the other end of the swing arm 412B is rotatably connected to the clamping block 411.

[0081] A third bearing platform 150 is slidably arranged on the machine platform 100.

[0082] To increase the clamping stability of the cylindrical welded part a, a second clamping assembly 600 is further included. The second clamping assembly 600 is arranged on the third bearing platform 150, and the second clamping assembly 600 is located between the clamping mechanism 410 and the clamping and docking device 300.

[0083] Refer to Figure 1 、 Figure 6 And Figure 7 , the second clamping assembly 600 includes a second lower cover 610 and a second upper cover 620.

[0084] The second lower cover 610 is arranged on the third bearing platform 150. The second lower cover 610 is provided with a third notch. The second upper cover 620 is provided with a fourth notch corresponding to the third notch. One end of the second upper cover 620 is pivotally connected to one end of the second lower cover 610. When the second upper cover 620 rotates to abut against the second lower cover 610, the third notch and the fourth notch enclose a second clamping through hole 630.

[0085] In this embodiment, a third mounting hole is arranged at the other end of the second upper cover 620, and a fourth mounting hole corresponding to the third mounting hole is arranged at the other end of the second lower cover 610. When the second upper cover 620 rotates to abut against the second lower cover 610, a fourth fastener is inserted through the third mounting hole and the fourth mounting hole to connect the second lower cover 610 and the second upper cover 620. Among them, the fourth fastener can be set as a bolt, etc.

[0086] In some embodiments, one of the other ends of the second upper cover 620 and the second lower cover 610 is provided with a clamping block, and the other is provided with a clamping hole that cooperates with the clamping block. When the second upper cover 620 rotates to abut against the second lower cover 610, the clamping block is clamped in the clamping hole to connect the second lower cover 610 and the second upper cover 620.

[0087] To prevent the cylindrical weldment a from rubbing against the wall of the second clamping through-hole 630 when rotating, referring to Figure 6 and Figure 7 , rotatable second limiting rollers 520 are provided on both sides of the second upper cover 620 and the second lower cover 610. The total number of second limiting rollers 520 on the same side of the second upper cover 620 and the second lower cover 610 is four, and the four second limiting rollers 520 are evenly arranged around the axis of the second clamping through-hole 630. When the cylindrical weldment a passes through the second clamping through-hole 630, the cylindrical weldment a abuts against the surface of the second limiting rollers 520.

[0088] In some embodiments, the total number of second limiting rollers 520 on the same side of the second upper cover 620 and the second lower cover 610 can be set to three, five, etc.

[0089] The support plate 140 is arranged on the machine table 100 through a slide rail and slider, the vertical beam 141 is arranged on the support plate 140 through a slide rail and slider, and the third bearing platform 150 is arranged on the machine table 100 through a slide rail and slider. With the above structure, the positions of the clamping mechanism 410, the rotating mechanism 420, and the second clamping assembly 600 can be slidably adjusted to adapt to cylindrical weldments a of different lengths.

[0090] The support plate 140, the vertical beam 141, and the third bearing platform 150 can all be slidably positioned.

[0091] The support plate 140 can be slidably positioned. A rack 160 is provided on the machine table 100, and the rack 160 is arranged along the length direction of the machine table 100. A driving positioning component 142 is connected to the support plate 140, and the driving positioning component 142 is connected to the rack 160 so as to be able to realize the sliding positioning of the support plate 140 through the rack 160.

[0092] The driving positioning component 142 includes a third connecting piece 142A, a blocking block 142B, a seventh driving piece 142C, and an eighth driving piece 142D.

[0093] Referring to Figure 4 and Figure 5, the third connecting member 142A is fixedly connected to the support plate 140. The seventh driving member 142C is disposed on the third connecting member 142A. A gear is fixedly connected to the output end of the seventh driving member 142C. The gear meshes with the rack 160. The seventh driving member 142C can drive the gear to rotate so as to drive the support plate 140 to slide. The eighth driving member 142D is disposed on the third connecting member 142A. The output end of the eighth driving member 142D is fixedly connected to the blocking block 142B. The blocking block 142B is provided with a tooth portion that cooperates with the rack 160. The eighth driving member 142D can drive the blocking block 142B to move so that the tooth portion meshes with the rack 160 to realize the positioning of the support plate 140. Among them, the seventh driving member 142C is set as a motor; the eighth driving member 142D can be set as a cylinder, a hydraulic cylinder, an electric push rod, etc.

[0094] The vertical beam 141 can be slidably positioned. Refer to Figure 5 , a ninth driving member 143 is disposed on the support plate 140. The output end of the ninth driving member 143 is fixedly connected to the vertical beam 141. The ninth driving member 143 can drive the vertical beam 141 to slide. Among them, since the ninth driving member 143 is a self-locking driving member, that is, it can maintain the existing position of the output end after power-off or stopping work to realize the positioning of the vertical beam 141. The ninth driving member 143 can be set as a locking cylinder, etc.

[0095] The third bearing platform 150 can be slidably positioned. Refer to Figure 6 and Figure 7 , a positioning bolt 151 penetrates through the third bearing platform 150. When the third bearing platform 150 slides to a suitable position, the positioning bolt 151 is adjusted to abut against the machine table 100 to realize the positioning of the third bearing platform 150.

[0096] In this embodiment, a second welding device 220 is respectively disposed on two vertical beams 141. The second welding device 220 can weld the end of the cylindrical weld a close to the clamping mechanism 410. The second welding device 220 has the same structure as the above-mentioned first welding device 210, so it will not be described here.

[0097] In this embodiment, a second light-shielding device 720 is respectively disposed on two vertical beams 141. The second light-shielding device 720 can block the glare generated during the welding of the second welding device 220. The second light-shielding device 720 has the same structure as the above-mentioned first light-shielding device 710, so it will not be described here.

[0098] Of course, the present invention is not limited to the above embodiments. Those skilled in the art can make equivalent deformations or substitutions without departing from the spirit of the present invention. These equivalent deformations and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A circumferential seam welding device, characterized in that: including a machine platform; a first welding device disposed on the machine platform; a clamping and docking device disposed on the machine platform, the clamping and docking device being capable of clamping two cylindrical weldments so that the two cylindrical weldments are butt - joined end to end to form a circumferential weld; a clamping and rotating device disposed on the machine platform, the clamping and rotating device being capable of clamping the two cylindrical weldments and capable of driving the two cylindrical weldments to rotate in the same direction so that the first welding device welds the circumferential weld; The clamping and rotating device includes: two clamping mechanisms, the two clamping mechanisms are respectively disposed on two sides of the clamping and docking device, the two clamping mechanisms are oppositely arranged, one of the clamping mechanisms is capable of clamping the head end of one of the cylindrical weldments, and the other clamping mechanism is capable of clamping the tail end of the other cylindrical weldment; two rotating mechanisms, both disposed on the machine platform, the two rotating mechanisms are connected to the two clamping mechanisms in one - to - one correspondence, the two rotating mechanisms are capable of driving the two clamping mechanisms to rotate in the same direction to drive the two cylindrical weldments to rotate in the same direction; the two rotating mechanisms are disposed on two support plates in one - to - one correspondence, the support plates are arranged on the machine platform through slide rails and sliders, the support plates can be slidably positioned, a rack is provided on the machine platform, the rack is arranged along the length direction of the machine platform, a driving and positioning component is connected to the support plate, the driving and positioning component is connected to the rack to be capable of realizing the sliding positioning of the support plate through the rack; the driving and positioning component includes a third connecting piece, a blocking block, a seventh driving member and an eighth driving member; the third connecting piece is fixedly connected to the support plate, the seventh driving member is disposed on the third connecting piece, an output end of the seventh driving member is fixedly connected with a gear, the gear meshes with the rack, the seventh driving member is capable of driving the gear to rotate to drive the support plate to slide, the eighth driving member is disposed on the third connecting piece, an output end of the eighth driving member is fixedly connected to the blocking block, the blocking block is provided with teeth matching with the rack, the eighth driving member is capable of driving the blocking block to move so that the teeth mesh with the rack to realize the positioning of the support plate; there are two groups of the blocking block and the eighth driving member and they are respectively disposed on two sides of the gear along the length direction of the rack.

2. The circumferential weld welding equipment according to claim 1, wherein: The clamping and docking device includes two first clamping components, the two first clamping components are both disposed on the machine platform, the two first clamping components are oppositely arranged, the first clamping component is provided with a first clamping through - hole, the head end of one of the cylindrical weldments is rotatably inserted into one of the first clamping through - holes, and the tail end of the other cylindrical weldment is rotatably inserted into the other first clamping through - hole so that the two cylindrical weldments are butt - joined end to end to form the circumferential weld.

3. A circumferential seam welding device according to claim 2, characterized in that: The first clamping component includes: a first lower cover disposed on the machine platform, the first lower cover is provided with a first notch; a first upper cover, the first upper cover is provided with a second notch corresponding to the first notch, one end of the first upper cover is pivotally connected to one end of the first lower cover, when the first upper cover rotates to abut against the first lower cover, the first notch and the second notch enclose the first clamping through - hole.

4. The circumferential weld welding equipment according to claim 3, wherein: On both sides of the first upper cover and the first lower cover, rotatable first limiting rollers are provided. The total number of the first limiting rollers on the same side of the first upper cover and the first lower cover is at least three. At least three of the first limiting rollers are evenly arranged around the axis of the first clamping through hole. When the cylindrical weldment passes through the first clamping through hole, the cylindrical weldment abuts against the surfaces of the first limiting rollers.

5. A circumferential seam welding device according to claim 1, characterized in that: The clamping and rotating device includes: Two clamping mechanisms, which are respectively arranged on both sides of the clamping and docking device. The two clamping mechanisms are arranged oppositely. One of the clamping mechanisms can clamp the head end of one of the cylindrical weldments, and the other clamping mechanism can clamp the tail end of the other cylindrical weldment; Two rotating mechanisms, both of which are arranged on the machine table. The two rotating mechanisms are connected to the two clamping mechanisms in a one-to-one correspondence. The two rotating mechanisms can drive the two clamping mechanisms to rotate in the same direction, so as to drive the two cylindrical weldments to rotate in the same direction.

6. The circumferential seam welding equipment according to claim 5, characterized in that: The rotating mechanism includes: A first driving member, which is arranged on the machine table; A connecting frame, which is connected to the output end of the first driving member. The clamping mechanism is arranged on the connecting frame. The first driving member can drive the connecting frame to rotate, so as to drive the clamping mechanism to rotate.

7. A circumferential seam welding device according to claim 6, characterized in that: The clamping mechanism includes: Two clamping blocks, both of which are slidably arranged on the connecting frame. The two clamping blocks are arranged oppositely; A second driving member, which is arranged on the connecting frame. Both of the clamping blocks are connected to the output end of the second driving member. The second driving member can drive the two clamping blocks to slide towards each other, so as to clamp the cylindrical weldment.

8. The circumferential seam welding device according to claim 5, wherein: It further includes a second clamping assembly, which is arranged on the machine table and is located between the clamping mechanism and the clamping and docking device.

9. The circumferential seam welding device according to claim 1, wherein: It further includes a first light shielding device, which is arranged on the machine table. The first light shielding device can shield the glare generated when the first welding device welds the circumferential seam.

10. The circumferential seam welding device according to claim 9, wherein: The first light shielding device includes: A light shielding plate; A third driving member, which is arranged on the machine table. The output end of the third driving member is connected to the light shielding plate. The third driving member can drive the light shielding plate to move upward, so as to shield the glare generated when the first welding device welds the circumferential seam.

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