A welding turning platform for coiled pipes

Abstract

The present invention discloses a welding turning platform for coiled pipes, characterized in that the platform comprises a turning mechanism (1), a conveying frame (2) and a welding frame (3) are arranged at the inlet end of the turning mechanism (1), and a carrying platform (4) is also arranged on the conveying frame (2). This is a turning platform that can conveniently, quickly and automatically complete the welding operation of the end interface of the coiled pipe.

Description

Technical Field

[0001] The invention relates to a turning platform, in particular to a welding turning platform for coiled pipes. Background Art

[0002] The coil assembly is a heat exchange component that must be used in heat exchange equipment. In order to maximize the heat exchange efficiency, the number of pipes contained in the coil assembly should be as large as possible, but it should not take up too much space. Therefore, a multi-layer heat exchange coil assembly has appeared on the market. This heat exchange coil assembly consists of multiple coil layers in the longitudinal direction, and each layer includes multiple coils, thus forming a cubic structure. Both ends and the middle of this coil assembly are provided with frames made of profiles for supporting all pipes to ensure overall rigidity and strength.

[0003] Since there are many pipes in this coil assembly and they are densely distributed, the operation of welding the ends is very complicated. Since each coil needs to be welded 360 degrees, the workload is huge, which not only takes a lot of time, but also occupies a lot of human resources.

[0004] Therefore, a method or device capable of solving the above problems is now needed. Summary of the invention

[0005] The present invention aims to solve the above-mentioned deficiencies in the prior art and proposes a turning platform which can conveniently, quickly and automatically complete the welding operation on the end interface of the coil.

[0006] The technical solution of the present invention is: a welding turning platform for coils, characterized in that: the platform comprises a turning mechanism 1, a conveying frame 2 and a welding frame 3 are arranged at the inlet end of the turning mechanism 1, and a carrying platform 4 is also arranged on the conveying frame 2.

[0007] The flipping mechanism comprises a bottom frame 1-1, at both ends of the bottom frame 1-1 there are respectively provided a flipping cylinder 1-2 controlled by a driving mechanism, an outer gear ring 1-3 is fixedly provided on the outer wall of the flipping cylinder 1-2, a flipping active tooth 1-4 is rotatably supported on the bottom frame 1-1, and the flipping active tooth 1-4 is meshed with the outer gear ring 1-3, the driving mechanism comprises a driving motor 1-5 arranged in the middle of the bottom frame 1-1, the output end of the driving motor 1-5 is connected to the input end of the gearbox, and the two output ends of the gearbox are key-connected to the flipping active tooth 1-4, two groups of auxiliary support roller groups are symmetrically arranged at the bottom of the flipping cylinder 1-2, each group of auxiliary support roller groups is composed of two symmetrically distributed auxiliary support rollers 1-6, the edges of the two end faces of the flipping cylinder 1-2 are also provided with support edges 1-7 matching the auxiliary support rollers 1-6, and an adjustable clamping mechanism 5 is also arranged between the two flipping cylinders 1-2,

[0008] The adjustable clamping mechanism 5 includes multiple sets of connecting mechanisms connected between the two flip cylinders 1-2, and the connecting mechanisms include two symmetrically distributed bottom connecting mechanisms and a top connecting mechanism located at the top, each set of connecting mechanisms includes a first guide column 5-1 and a first threaded column 5-2, and two sets of clamping assemblies are commonly connected to the multiple connecting mechanisms, and the clamping assembly includes a top support frame 5-3 connected to the top connecting mechanism, and the top support frame 5-3 is slidably connected to the first guide column 5-1 in the top connecting mechanism, and a nut block driven by a motor is also rotatably supported in the top support frame 5-3, and the nut block is threadedly connected to the first threaded column 5-2, and the clamping assembly also includes a bottom support frame 5-4 connected to the bottom connecting mechanism, and the bottom support frame 5-4 is slidably connected to the first guide column 5-1 in the bottom connecting mechanism, and a nut block driven by a motor is also rotatably supported in the bottom support frame 5-4, and the nut block is threadedly connected to the first threaded column 5-2,

[0009] The two ends of the top support frame 5-3 are connected to the two bottom support frames 5-4 through longitudinal guide columns 5-5 and longitudinal threaded columns 5-6. The longitudinal threaded columns 5-6 are rotatably supported between the top support frame 5-3 and the bottom support frame 5-4. At the same time, the top support frame 5-3 is also provided with a first longitudinal movement motor 5-7 that can drive the longitudinal threaded column 5-6 to rotate. All the longitudinal guide columns 5-5 are slidably connected with longitudinal movement brackets. The longitudinal movement bracket includes first longitudinal movement bracket seats 5-8 at both ends. The first longitudinal movement bracket seat 5-8 is slidably connected with the longitudinal guide column 5-5. At the same time, a nut block is fixedly arranged on the first longitudinal movement bracket seat 5-8. The nut block is threadedly connected with the longitudinal threaded column 5-6. Two symmetrically distributed support rods 5-9 are commonly connected between the two first longitudinal movement bracket seats 5-8. Two clamping seats 5-10 are symmetrically fixedly arranged on the support rod 5-9.

[0010] A fixed clamping mechanism 6 is arranged in the flip cylinder 1-2 near the conveying rack 2, and the fixed clamping mechanism 6 includes two symmetrically distributed fixed clamping assemblies, and the fixed clamping assembly includes a fixed upper support 6-1 and a fixed lower support 6-2 fixedly arranged in the flip cylinder 1-2, and a second guide column 6-3 is connected between the fixed upper support 6-1 and the fixed lower support 6-2, and a second threaded column 6-4 is rotatably supported between the fixed upper support 6-1 and the fixed lower support 6-2, and a second longitudinal movement motor connected to the second threaded column 6-4 is arranged in the fixed lower support 6-2, and a second longitudinal movement bracket seat 6-5 is slidably connected to the second guide column 6-3. A nut block is fixedly arranged on the second longitudinal movement bracket seat 6-5, and the nut block is threadedly connected with the second threaded column 6-4. A horizontally distributed horizontal guide column 6-6 is also slidably connected to the second longitudinal movement bracket seat 6-5. At the same time, a horizontal threaded column 6-7 is rotatably supported on the second longitudinal movement bracket seat 6-5. A nut sleeve 6-8 threadedly connected with the horizontal threaded column 6-7 is also fixedly arranged on the second longitudinal movement bracket seat 6-5. A clamping motor 6-9 capable of driving the horizontal threaded column 6-7 to rotate is also arranged on the second longitudinal movement bracket seat 6-5. A clamping plate 6-10 is fixedly arranged on the free end of the second guide column 6-3. The clamping plates 6-10 in the two fixed clamping assemblies are symmetrically distributed.

[0011] The conveyor frame 2 comprises a conveyor frame body 2-1, and two rows of rollers 2-2 are arranged on the top surface of the conveyor frame body 2-1.

[0012] The welding frame 3 includes a welding frame body 3-1, and welding frame guide columns 3-2 are respectively provided at both ends of the welding frame body 3-1. Two support plates 3-3 are slidably connected to the welding frame guide columns 3-2. A welding frame lifting motor 3-4 is provided at both ends of each support plate 3-3. The welding frame lifting motor 3-4 can drive the welding frame nut block rotatably connected to the support plate 3-3 to rotate, and the welding frame nut block is threadedly connected to the welding frame threaded column 3-5. The welding frame threaded column 3-5 is fixedly arranged at the end of the welding frame body 3-1, and a slideway 3-6 arranged along its length direction is provided on the support plate 3-3. A welding seat 3-7 is slidably connected to the slideway 3-6. A driving motor is arranged in the welding seat 3-7, and a driving tooth is connected to the working end of the driving motor. The driving tooth is meshed with a rack 3-8 arranged on the slideway 3-6. A welding robot 3-9 is also arranged on the welding seat 3-7.

[0013] Both ends of the carrying platform 4 are provided with a manual clamping mechanism, and the manual clamping mechanism includes a manual clamping slide 4-1, and the manual clamping slide 4-1 is distributed along the width direction of the carrying platform 4, and manual clamping seats 4-2 are slidably connected at both ends of the manual clamping slide 4-1, and a plurality of fixing bolts 4-3 are threadedly connected to the manual clamping seat 4-2. At the same time, a clamping screw is also threadedly connected to the manual clamping seat 4-2, and a handwheel 4-4 is provided at one end of the clamping screw, and a manual clamping block 4-5 is provided at the other end.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] This type of coil welding flip platform is designed with a special structure to solve various problems in the traditional manual welding method when welding coil components. It can clamp the coil component at the front, middle and back positions, and use two flip cylinders to drive the coil component to flip 360 degrees in space. During the flipping process, the welding robot installed on the welding frame at the end of the coil component (i.e. the position where welding is required) can perform welding operations according to the established procedures. The whole process can be automated, which greatly saves human resources and labor while improving welding efficiency and welding quality. Therefore, it can be said that it has many advantages and is particularly suitable for promotion and application in this field. Its market prospects are very broad. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0017] Figure 2 yes Figure 1 Enlarged view of part A in .

[0018] Figure 3 yes Figure 1 Enlarged view of part B in .

[0019] Figure 4 yes Figure 1 Enlarged view of part C in .

[0020] Figure 5 yes Figure 1 Enlarged view of part D in . DETAILED DESCRIPTION

[0021] The specific implementation of the present invention will be described below with reference to the accompanying drawings. Figures 1 to 5 As shown: A welding turning platform for coils, which includes a turning mechanism 1, a conveying frame 2 and a welding frame 3 are arranged at the inlet end of the turning mechanism 1, and a carrying platform 4 is also arranged on the conveying frame 2.

[0022] The flipping mechanism comprises a bottom frame 1-1, at both ends of the bottom frame 1-1 there are respectively provided a flipping cylinder 1-2 controlled by a driving mechanism, an outer gear ring 1-3 is fixedly provided on the outer wall of the flipping cylinder 1-2, a flipping active tooth 1-4 is rotatably supported on the bottom frame 1-1, and the flipping active tooth 1-4 is meshed with the outer gear ring 1-3, the driving mechanism comprises a driving motor 1-5 arranged in the middle of the bottom frame 1-1, the output end of the driving motor 1-5 is connected to the input end of the gearbox, and the two output ends of the gearbox are key-connected to the flipping active tooth 1-4, two groups of auxiliary support roller groups are symmetrically arranged at the bottom of the flipping cylinder 1-2, each group of auxiliary support roller groups is composed of two symmetrically distributed auxiliary support rollers 1-6, the edges of the two end faces of the flipping cylinder 1-2 are also provided with support edges 1-7 matching the auxiliary support rollers 1-6, and an adjustable clamping mechanism 5 is also arranged between the two flipping cylinders 1-2,

[0023] The adjustable clamping mechanism 5 includes multiple sets of connecting mechanisms connected between the two flip cylinders 1-2, and the connecting mechanisms include two symmetrically distributed bottom connecting mechanisms and a top connecting mechanism located at the top, each set of connecting mechanisms includes a first guide column 5-1 and a first threaded column 5-2, and two sets of clamping assemblies are commonly connected to the multiple connecting mechanisms, and the clamping assembly includes a top support frame 5-3 connected to the top connecting mechanism, and the top support frame 5-3 is slidably connected to the first guide column 5-1 in the top connecting mechanism, and a nut block driven by a motor is also rotatably supported in the top support frame 5-3, and the nut block is threadedly connected to the first threaded column 5-2, and the clamping assembly also includes a bottom support frame 5-4 connected to the bottom connecting mechanism, and the bottom support frame 5-4 is slidably connected to the first guide column 5-1 in the bottom connecting mechanism, and a nut block driven by a motor is also rotatably supported in the bottom support frame 5-4, and the nut block is threadedly connected to the first threaded column 5-2,

[0024] The two ends of the top support frame 5-3 are connected to the two bottom support frames 5-4 through longitudinal guide columns 5-5 and longitudinal threaded columns 5-6. The longitudinal threaded columns 5-6 are rotatably supported between the top support frame 5-3 and the bottom support frame 5-4. At the same time, the top support frame 5-3 is also provided with a first longitudinal movement motor 5-7 that can drive the longitudinal threaded column 5-6 to rotate. All the longitudinal guide columns 5-5 are slidably connected with longitudinal movement brackets. The longitudinal movement bracket includes first longitudinal movement bracket seats 5-8 at both ends. The first longitudinal movement bracket seat 5-8 is slidably connected with the longitudinal guide column 5-5. At the same time, a nut block is fixedly arranged on the first longitudinal movement bracket seat 5-8. The nut block is threadedly connected with the longitudinal threaded column 5-6. Two symmetrically distributed support rods 5-9 are commonly connected between the two first longitudinal movement bracket seats 5-8. Two clamping seats 5-10 are symmetrically fixedly arranged on the support rod 5-9.

[0025] A fixed clamping mechanism 6 is arranged in the flip cylinder 1-2 near the conveying rack 2, and the fixed clamping mechanism 6 includes two symmetrically distributed fixed clamping assemblies, and the fixed clamping assembly includes a fixed upper support 6-1 and a fixed lower support 6-2 fixedly arranged in the flip cylinder 1-2, and a second guide column 6-3 is connected between the fixed upper support 6-1 and the fixed lower support 6-2, and a second threaded column 6-4 is rotatably supported between the fixed upper support 6-1 and the fixed lower support 6-2, and a second longitudinal movement motor connected to the second threaded column 6-4 is arranged in the fixed lower support 6-2, and a second longitudinal movement bracket seat 6-5 is slidably connected to the second guide column 6-3. A nut block is fixedly arranged on the second longitudinal movement bracket seat 6-5, and the nut block is threadedly connected with the second threaded column 6-4. A horizontally distributed horizontal guide column 6-6 is also slidably connected to the second longitudinal movement bracket seat 6-5. At the same time, a horizontal threaded column 6-7 is rotatably supported on the second longitudinal movement bracket seat 6-5. A nut sleeve 6-8 threadedly connected with the horizontal threaded column 6-7 is also fixedly arranged on the second longitudinal movement bracket seat 6-5. A clamping motor 6-9 capable of driving the horizontal threaded column 6-7 to rotate is also arranged on the second longitudinal movement bracket seat 6-5. A clamping plate 6-10 is fixedly arranged on the free end of the second guide column 6-3. The clamping plates 6-10 in the two fixed clamping assemblies are symmetrically distributed.

[0026] The conveyor frame 2 comprises a conveyor frame body 2-1, and two rows of rollers 2-2 are arranged on the top surface of the conveyor frame body 2-1.

[0027] The welding frame 3 includes a welding frame body 3-1, and welding frame guide columns 3-2 are respectively provided at both ends of the welding frame body 3-1. Two support plates 3-3 are slidably connected to the welding frame guide columns 3-2. A welding frame lifting motor 3-4 is provided at both ends of each support plate 3-3. The welding frame lifting motor 3-4 can drive the welding frame nut block rotatably connected to the support plate 3-3 to rotate, and the welding frame nut block is threadedly connected to the welding frame threaded column 3-5. The welding frame threaded column 3-5 is fixedly arranged at the end of the welding frame body 3-1, and a slideway 3-6 arranged along its length direction is provided on the support plate 3-3. A welding seat 3-7 is slidably connected to the slideway 3-6. A driving motor is arranged in the welding seat 3-7, and a driving tooth is connected to the working end of the driving motor. The driving tooth is meshed with a rack 3-8 arranged on the slideway 3-6. A welding robot 3-9 is also arranged on the welding seat 3-7.

[0028] Both ends of the carrying platform 4 are provided with a manual clamping mechanism, and the manual clamping mechanism includes a manual clamping slide 4-1, and the manual clamping slide 4-1 is distributed along the width direction of the carrying platform 4, and manual clamping seats 4-2 are slidably connected at both ends of the manual clamping slide 4-1, and a plurality of fixing bolts 4-3 are threadedly connected to the manual clamping seat 4-2. At the same time, a clamping screw is also threadedly connected to the manual clamping seat 4-2, and a handwheel 4-4 is provided at one end of the clamping screw, and a manual clamping block 4-5 is provided at the other end.

[0029] The working process of the welding turning platform for the coil pipe in the embodiment of the present invention is as follows: in the initial state, the carrying platform 4 is located above the conveying frame 2. First, the coil pipe assembly that needs to be welded is hoisted onto the carrying platform 4 as a whole by using a sling, and then the coil pipe assembly is clamped on the carrying platform 4 by using the manual clamping mechanisms at both ends of the carrying platform 4. The specific operation process is as follows: first, the relative position of the manual clamping seat 4-2 on the manual clamping slide 4-1 is adjusted to ensure that the distance between the two manual clamping seats 4-2 is greater than the width of the support frame at the end of the coil pipe assembly, and then the two manual clamping seats 4-2 are pushed towards the direction close to the coil pipe assembly. After the position is appropriate, the fixing bolts 4-3 are tightened, and finally the clamping screw is driven to rotate by the hand wheel 4-4, and finally the manual clamping fastener 4-5 is pressed on the support frame of the coil pipe assembly;

[0030] Then push the carrying platform 4, and push the carrying platform 4 and the coil assembly thereon into the turning mechanism 1 (a roller for supporting the carrying platform 4 is provided on the bottom frame 1-1), and the two sets of adjustable clamping mechanisms 5 in the turning mechanism 1 are clamped on the supporting frames at the rear end and the middle part of the coil assembly respectively, and the fixed clamping mechanism 6 provided at the entrance end of the turning mechanism 1 is clamped on the supporting frame at the front end of the coil assembly. At this time, the coil assembly and the carrying platform 4 are both fixed to the turning mechanism 1; but the front end of the coil assembly (i.e., the end where welding operation is required) is located outside the turning mechanism 1;

[0031] After the preparation work is completed, the driving motor 1-5 is controlled to work, and the two flip active teeth 1-4 are driven to rotate synchronously. Since the flip active teeth 1-4 are meshed with the outer gear ring 1-3, the two flip cylinders 1-2 are driven to rotate synchronously as a whole, and finally the coil assembly is driven to rotate in space; during the rotation of the flip cylinder 1-2, the two welding robots 3-9 on the welding frame 3 respectively perform welding operations on the coil ends at different positions. Since the welding robot 3-9 is located on the welding seat 3-7, and the welding seat 3-7 can be in the length direction of the slide 3-6 Adjust the position, so that the welding robot 3-9 can reciprocate in the direction of approaching or moving away from the coil assembly; at the same time, if the two welding frame lifting motors 3-4 on the same support plate 3-3 are controlled to work synchronously at the same time, so that the welding frame nut block rotates relative to the welding frame threaded column 3-5, the support plate 3-3 can be driven to move longitudinally on the welding frame body 3-1; the above two movements are combined with the movement of the welding robot 3-9's welding mechanical arm in space, and at the same time combined with the rotation of the coil assembly itself, it is possible to complete more complex welding operations at the ends of multiple coils;

[0032] After welding is completed, the adjustable clamping mechanism 5 and the fixed clamping mechanism 6 release the clamping of the coil assembly, the carrying platform 4 is pulled out from the turning mechanism 1, and the manual clamping mechanism is released, and then the welded coil assembly is transported away using a sling;

[0033] The working process of the fixed clamping mechanism 6 is as follows: first, the control system controls the two second longitudinal movement motors to work synchronously at the same time, driving the second threaded column 6-4 to rotate, so that the nut block threadedly connected to the second threaded column 6-4 is changed back to drive the second longitudinal movement bracket seat 6-5 to move in the longitudinal direction. After the second longitudinal movement bracket seat 6-5 moves to a suitable height, the second longitudinal movement motor stops working, and the control system controls the two clamping motors 6-9 to work, and the clamping motor 6-9 drives the horizontal threaded column 6-7 to rotate, thereby driving the two clamping plates 6-10 to move toward each other, clamping the support frame part at the front end of the coil assembly;

[0034] The working process of the adjustable clamping mechanism 5 is as follows: first, according to the overall length of the coil assembly to be welded, the relative positions of the two clamping assemblies between the two flip cylinders 1-2 are adjusted, that is, all the nut blocks threadedly connected to the first threaded column 5-2 are driven by the motor to rotate synchronously at the same time, and then the clamping assembly (composed of a top support frame 5-3 and two bottom support frames 5-4) is driven as a whole to move along the length direction of the first guide column 5-1 and the first threaded column 5-2, and the two clamping assemblies are stopped after they move to the working position respectively (the working position here is the position matching the middle and rear end support frame parts of the coil assembly);

[0035] Then, the two 5-7 are controlled by the control system to work synchronously at the same time, and the longitudinal threaded column 5-6 rotates, thereby driving the longitudinal moving bracket as a whole to move in the longitudinal direction, so as to set the distance between the two clamping seats 5-10 according to the specifications of the coil assembly to be welded and fix them. In this way, when the longitudinal moving bracket as a whole moves downward, the two clamping seats 5-10 will clamp on the outer side of the support frame of the coil assembly from above (the two sets of longitudinal moving brackets are clamped on the support frames in the middle and rear ends respectively), and the coil assembly is fixed;

[0036] Since the specific positions of the two sets of clamping assemblies can be adjusted, the device can be applicable to welding operations of coil assemblies of various specifications.

Claims

1. A welding turning platform for coiled pipes, characterized in that: The platform comprises a turning mechanism (1), the inlet end of the turning mechanism (1) is provided with a conveying frame (2) and a welding frame (3), and the conveying frame (2) is also provided with a carrying platform (4). The turning mechanism comprises a bottom frame (1-1), and turning cylinders (1-2) controlled by a driving mechanism are respectively arranged at both ends of the bottom frame (1-1), and an outer gear ring (1-3) is fixedly arranged on the outer wall of the turning cylinder (1-2), and turning active teeth (1-4) are rotatably supported on the bottom frame (1-1), and the turning active teeth (1-4) and the outer gear ring (1-3) are meshed with each other, and the driving mechanism comprises a driving motor (1-5) arranged in the middle of the bottom frame (1-1), and the driving motor (1-5 ) is connected to the input end of the gearbox, and the two output ends of the gearbox are key-connected to the flip active gear (1-4). The bottom of the flip cylinder (1-2) is symmetrically provided with two groups of auxiliary support roller groups, each group of auxiliary support roller groups is composed of two symmetrically distributed auxiliary support rollers (1-6). The edges of the two end surfaces of the flip cylinder (1-2) are also provided with support edges (1-7) matching the auxiliary support rollers (1-6). An adjustable clamping mechanism (5) is also provided between the two flip cylinders (1-2). The adjustable clamping mechanism (5) comprises a plurality of connection mechanisms connected between the two flip cylinders (1-2), the connection mechanisms comprising two symmetrically distributed bottom connection mechanisms and a top connection mechanism located at the top, each connection mechanism comprising a first guide column (5-1) and a first threaded column (5-2), and two clamping assemblies are commonly connected to the plurality of connection mechanisms, the clamping assembly comprising a top support frame (5-3) connected to the top connection mechanism, the top support frame (5-3) being slidably connected to the first guide column (5-1) in the top connection mechanism, a nut block driven by a motor being rotatably supported in the top support frame (5-3), the nut block being threadably connected to the first threaded column (5-2), the clamping assembly further comprising a bottom support frame (5-4) connected to the bottom connection mechanism, the bottom support frame (5-4) being slidably connected to the first guide column (5-1) in the bottom connection mechanism, a nut block driven by a motor being rotatably supported in the bottom support frame (5-4), the nut block being threadably connected to the first threaded column (5-2), The two ends of the top support frame (5-3) are connected to the two bottom support frames (5-4) via longitudinal guide columns (5-5) and longitudinal threaded columns (5-6); the longitudinal threaded columns (5-6) are rotatably supported between the top support frame (5-3) and the bottom support frames (5-4); and a first longitudinal movement motor (5-7) capable of driving the longitudinal threaded columns (5-6) to rotate is also provided on the top support frame (5-3); and longitudinal movement brackets are slidably connected to all the longitudinal guide columns (5-5). The longitudinal movement bracket comprises first longitudinal movement bracket seats (5-8) at two ends, the first longitudinal movement bracket seats (5-8) are slidably connected to the longitudinal guide column (5-5), and a nut block is fixedly arranged on the first longitudinal movement bracket seat (5-8), and the nut block is threadedly connected to the longitudinal threaded column (5-6), and two symmetrically distributed support rods (5-9) are commonly connected between the two first longitudinal movement bracket seats (5-8), and two clamping seats (5-10) are symmetrically fixedly arranged on the support rod (5-9). A fixed clamping mechanism (6) is arranged in a turning cylinder (1-2) near the conveying rack (2), the fixed clamping mechanism (6) comprising two symmetrically distributed fixed clamping assemblies, the fixed clamping assembly comprising a fixed upper support (6-1) and a fixed lower support (6-2) fixedly arranged in the turning cylinder (1-2), a second guide column (6-3) being connected between the fixed upper support (6-1) and the fixed lower support (6-2), and a second threaded column (6-4) being rotatably supported between the fixed upper support (6-1) and the fixed lower support (6-2), a second longitudinal movement motor connected to the second threaded column (6-4) being arranged in the fixed lower support (6-2), a second longitudinal movement support seat (6-5) being slidably connected to the second guide column (6-3), A nut block is fixedly arranged on the second longitudinal moving support seat (6-5), and the nut block is threadedly connected to the second threaded column (6-4). The second longitudinal moving support seat (6-5) is also slidably connected to a horizontally distributed horizontal guide column (6-6). At the same time, a horizontal threaded column (6-7) is rotatably supported on the second longitudinal moving support seat (6-5). A nut sleeve (6-8) threadedly connected to the horizontal threaded column (6-7) is also fixedly arranged on the second longitudinal moving support seat (6-5). A clamping motor (6-9) capable of driving the horizontal threaded column (6-7) to rotate is also arranged on the second longitudinal moving support seat (6-5). A clamping plate (6-10) is fixedly arranged on the free end of the second guide column (6-3). The clamping plates (6-10) in the two fixed clamping assemblies are symmetrically distributed. The conveyor frame (2) comprises a conveyor frame body (2-1), and two rows of rollers (2-2) are arranged on the top surface of the conveyor frame body (2-1). The welding frame (3) comprises a welding frame body (3-1), and welding frame guide columns (3-2) are respectively arranged at both ends of the welding frame body (3-1), and two support plates (3-3) are slidably connected to the welding frame guide columns (3-2), and a welding frame lifting motor (3-4) is arranged at both ends of each support plate (3-3), and the welding frame lifting motor (3-4) can drive the welding frame nut block connected to the support plate (3-3) to rotate, and the welding frame nut block is threadedly connected to the welding frame thread column (3-5). ), the welding frame threaded column (3-5) is fixedly arranged at the end of the welding frame body (3-1), the support plate (3-3) is provided with a slideway (3-6) arranged along its length direction, the slideway (3-6) is slidably connected with a welding seat (3-7), a driving motor is arranged in the welding seat (3-7), a driving tooth is connected to the working end of the driving motor, the driving tooth is meshed with a rack (3-8) arranged on the slideway (3-6), and a welding robot (3-9) is also arranged on the welding seat (3-7). Both ends of the transport platform (4) are provided with a manual clamping mechanism, the manual clamping mechanism comprising a manual clamping slideway (4-1), the manual clamping slideway (4-1) being distributed along the width direction of the transport platform (4), and manual clamping seats (4-2) being slidably connected at both ends of the manual clamping slideway (4-1), a plurality of fixing bolts (4-3) being threadedly connected to the manual clamping seat (4-2), and a clamping screw being threadedly connected to the manual clamping seat (4-2), one end of the clamping screw being provided with a hand wheel (4-4), and the other end being provided with a manual clamping block (4-5).

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