Multi-layer straight seam stainless steel composite pipe welding manufacturing process and welding system

Abstract

The invention discloses a multi-layer straight-seam stainless steel composite pipe welding manufacturing process and a welding system, and relates to the technical field of welding manufacturing, and the multi-layer straight-seam stainless steel composite pipe welding manufacturing process comprises the following steps: S2, clamping a steel plate: driving a movement mechanism to move when the steel plate is pushed in, so that a welding seam strip ascends to abut against the lower part of a seam; the welding strip ascends to enable the transmission mechanism to synchronously drive the clamping mechanism to open to clamp the outer end of the steel plate so as to fix the steel plate. According to the multi-layer straight-seam stainless steel composite pipe welding manufacturing process and the welding system, the weld joint strip ascends to abut against the position below the seam, so that an acting point exists below a steel plate, the situation that the seam is excessively extruded to cause inward shrinkage, and finally a heart-shaped structure is formed through welding is avoided, and when the weld joint strip ascends, the transmission mechanism can be driven to move, so that the welding quality is improved. Therefore, the clamping mechanism is synchronously driven to open to clamp the outer end of the steel plate so as to fix the steel plate, the steel plate can be automatically fixed, the two ends of the steel plate can be aligned, and the situations that joints are not aligned and the two ends are arranged up and down after forming are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of welding manufacturing, and in particular to a welding manufacturing process and a welding system for a multi-layer straight seam stainless steel composite pipe. Background Art

[0002] Straight seam welding is a commonly used welding method, which is widely used in the fields of steel pipe manufacturing, pressure vessels, steel structures, etc. Straight seam welding is a common steel pipe production method, which is characterized by the weld being parallel to the axis of the pipe body, and is widely used in various occasions where steel pipes are required.

[0003] In the production process of steel pipes, steel plates or steel strips are usually manufactured first, and then the steel plates or steel strips are bent and formed, and then folded together to form a tubular structure, and then the seams are connected by welding.

[0004] Some defects may occur in the production process of straight seam welded pipes, and these defects will affect the quality of the welded pipes. Under the existing technology, after pushing the steel plate into the device, the staff usually first hold one side of the steel plate with one hand, and use the other hand to operate the device to clamp this side of the steel plate, and then use the same operation to clamp the other side of the steel plate. This method is not only time-consuming and labor-intensive, but may also cause accidents and injure the staff's fingers; and this method of fixing the steel plate depends entirely on the vision and experience of the staff. It is either difficult to align the steel plates, causing the two ends of the seam to be up and down or the gap to be too large, resulting in poor welding quality, or the joints are too squeezed together, resulting in excessive shrinkage, so that the welded steel plate is heart-shaped instead of a round tube shape. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-layer straight seam stainless steel composite pipe welding manufacturing process and welding system to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: A multi-layer straight seam stainless steel composite pipe welding manufacturing process comprises the following steps: S1. Steel plate feeding: After closing the steel plate, place it outside the fixed pipe, and make the joint just above the matching groove, then push it into the system; S2. Clamping the steel plate: When the steel plate is pushed in, the moving mechanism is driven to move, so that the welding strip rises and abuts against the bottom of the joint. The welding strip rises, so that the transmission mechanism synchronously drives the clamping mechanism to open and clamp the outer end of the steel plate to fix the steel plate; S3, fixing the steel plate: after the steel plate moves to the locking inclined surface, it moves obliquely upward, so that the clamping plate falls down and clamps the edges on both sides of the joint of the steel plate; S4, unlock welding: When the steel plate moves, the laser welding instrument is driven to move synchronously. When it reaches the unlocking position, the laser welding instrument is released and the circuit is triggered to open the laser welding instrument at the same time; S5. Welding: After the laser welding device is unlocked, it moves horizontally to weld the steel plate; S6, welding is completed: After the laser welding instrument moves to the outermost end, the trigger circuit is closed, the laser emission stops, and the welding is completed.

[0007] As a further preferred solution of the present invention, in the step S3, the locking slope is located in the rear section of the movement stroke of the steel plate.

[0008] As a further preferred solution of the present invention, in step S4, the unlocking position is an unlocking block, which is located at the end of the movement stroke of the steel plate, and the steel plate moves to the unlocking block to trigger unlocking.

[0009] A multi-layer straight seam stainless steel composite pipe welding system is applied to the above-mentioned multi-layer straight seam stainless steel composite pipe welding manufacturing process, the matching groove is arranged on the surface of the fixed pipe, the welding strip is slidably connected inside the matching groove, the lower surface of the welding strip is provided with a connecting groove, the transmission mechanism is arranged in the connecting groove, the moving mechanism is arranged at one end of the transmission mechanism, the clamping mechanism is arranged at the other end of the transmission mechanism, and the transmission mechanism and the clamping mechanism are both located inside the fixed pipe. After the steel plate is closed and pushed into the fixed pipe, the moving mechanism is driven to slide, so that the welding strip is driven by the transmission mechanism to slide upward and abut against the bottom of the joint, so that when the welding strip moves, the clamping mechanism is synchronously driven to open and clamp the outer end of the steel plate to fix the steel plate.

[0010] As a further preferred solution of the present invention, the transmission mechanism includes two connecting rods rotatably connected in the connecting groove, and one end of the two connecting rods is rotatably connected to two connecting seats, and the lower ends of the two connecting seats are respectively fixedly connected to two first connecting sleeves, and one end of the two first connecting sleeves is respectively provided with two connecting inner tubes.

[0011] As a further preferred solution of the present invention, the moving mechanism includes a first connecting block fixedly connected to the surface of one of the connecting inner tubes, and a sliding ring is slidably sleeved on the outside of the fixed tube, and the lower end of the first connecting block is fixedly connected to the inner surface of the sliding ring, and a sliding groove is also provided on the surface of the fixed tube, and the surface of the first connecting block slidably cooperates with the sliding groove.

[0012] As a further preferred scheme of the present invention, the locking mechanism includes a top pipe fixedly connected to one end of another connecting inner pipe, and a second connecting block is fixedly connected to the surface of the top pipe, and one end of the second connecting block is rotatably connected to the first locking seat, and one end of the first locking seat is connected to a locking rod, and a locking sleeve is slidably sleeved on the outside of the locking rod, and a locking plate is fixedly connected to the surface of the locking sleeve, and a connecting plate is fixedly connected to a connecting plate on one side surface of the locking plate, and one end of the connecting plate is connected to a second connecting sleeve, and one end of the second connecting sleeve is rotatably connected to the second connecting rod, and the surface of the second connecting rod is fixedly connected to the first connecting strip, and one end of the first connecting strip is rotatably connected to the second locking seat, and one end of the second locking seat is connected to the second connecting strip, and one end of the second connecting strip is rotatably connected to the third locking seat, and one end of the third locking seat is fixedly connected to the same surface of the connecting inner tube.

[0013] As a further preferred solution of the present invention, a sliding plate is fixedly connected to the surface of the sliding ring, and a sliding rail is slidably connected to the upper surface of the sliding plate. The locking inclined surface is arranged at the rear section of the sliding rail, and the clamping plate is fixedly connected to the upper surface of the sliding rail. A through hole is arranged on the upper surface of the clamping plate, and a first connecting rod is slidably connected in the through hole. A fixed plate is fixedly connected to the upper end of the first connecting rod, and a compression spring is connected between the fixed plate and the clamping plate. The compression spring is located on the surface of the first connecting rod, and moves obliquely upward after the sliding ring slides to the locking inclined surface, so that the clamping plate falls down and clamps both sides of the steel plate.

[0014] As a further preferred scheme of the present invention, the surface of the sliding ring is also fixedly connected to a locking rod, the upper surface of the locking rod is provided with a locking hole, the upper end of the locking rod is slidably sleeved on a locking seat, and a locking groove is provided on one side surface of the locking seat, the locking rod is located inside the locking groove, the locking seat is provided with a square groove, the upper surface of the locking seat is provided with a limiting hole, a locking tube is slidably connected in the limiting hole, the lower end of the locking tube slides with the locking hole, and an adjusting groove is provided on the surface of the locking tube, an adjusting plate is rotatably connected inside the adjusting groove, one end of the adjusting plate is connected to the locking plate, and two adjusting blocks are connected to the lower surface of the locking plate, a square plate is rotatably connected between the two adjusting blocks, the lower end of the square plate slides with the square groove, and a reset spring is connected between the locking plate and the locking seat.

[0015] As a further preferred solution of the present invention, the laser welding device is arranged on the other side surface of the locking seat, and a travel rod is connected to the one side surface of the laser welding device. A thick tube is slidably sleeved on the outside of the travel rod, and a guide sealing ring is provided at the connection between the travel rod and the thick tube. A first piston is provided at one end of the travel rod, and the first piston is located inside the thick tube. A second piston is also provided inside the thick tube, and an inflation valve is provided at one end of the thick tube.

[0016] In the above technical scheme, the multi-layer straight seam stainless steel composite pipe welding manufacturing process and welding system provided by the present invention have the following beneficial effects: The present invention arranges a moving mechanism to abut against the feeding end of the steel plate. When the steel plate is pushed in, the moving mechanism moves synchronously with the steel plate, and simultaneously drives the welding seam strip to rise and abut below the joint, so that there is a force point below the steel plate, which will not shrink inwards and finally weld into a heart-shaped structure due to excessive squeezing at the joint. When the welding seam strip rises, it will also drive the transmission mechanism to move, thereby synchronously driving the clamping mechanism to open and clamp the outer end of the steel plate to fix the steel plate, so that the steel plate can be automatically fixed and the two ends can be aligned, which will not cause uneven joints and the situation where the two ends are up and down after forming.

[0017] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0018] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention; Figure 2 A schematic diagram of the overall structure from another perspective provided by an embodiment of the present invention; Figure 3 A schematic diagram of a local structure provided by an embodiment of the present invention; Figure 4 The embodiment of the present invention provides Figure 3 The enlarged structural diagram at A in the middle; Figure 5 A schematic diagram of a local structure from another perspective provided by an embodiment of the present invention; Figure 6 The embodiment of the present invention provides Figure 5 The enlarged structural diagram at B in the middle; Figure 7 A schematic diagram of the internal structure of a fixed tube provided in an embodiment of the present invention; Figure 8 The embodiment of the present invention provides Figure 7 The enlarged structural diagram at C in the middle; Fig. 9A cross-sectional view of a locking seat provided in an embodiment of the present invention; Fig.10 A cross-sectional view of a thick tube provided in an embodiment of the present invention.

[0021] Description of reference numerals: 100, base; 101, support foot; 102, support plate; 103, mounting hole; 104, unlocking block; 105, mounting slot; 106, power-on seat; 107, trigger switch; 200, fixed plate; 201, first connecting rod; 202, compression spring; 203, clamping plate; 204, slide rail; 205, locking inclined surface; 206, sliding plate; 207, sliding ring; 300, fixed tube; 301, locking inclined tube; 302, sliding slot; 303, snap-fitting slot; 304, matching slot; 305, first connecting block; 400, welding strip; 401, connecting slot; 402, connecting rod; 403, connecting seat; 404, first connecting sleeve; 405, connecting inner tube; 500, top tube; 501, second connecting block; 502, first snap-fitting seat; 503, snap The closing rod; 504, the locking sleeve; 505, the locking plate; 506, the connecting plate; 507, the second connecting sleeve; 508, the second connecting rod; 509, the first connecting strip; 510, the second locking seat; 511, the second connecting strip; 512, the third locking seat; 600, the locking rod; 601, the locking hole; 602, the locking seat; 603, the locking groove; 604, the square groove; 605, the locking tube; 606, the adjusting groove; 607, the adjusting plate; 608, the return spring; 609, the adjusting block; 610, the square plate; 611, the locking plate; 700, the laser welding instrument; 701, the travel block; 702, the travel track; 703, the travel rod; 704, the thick tube; 705, the guide seal ring; 706, the first piston; 707, the second piston; 708, the inflation valve. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0023] See also Figure 1 - Fig.10 A multi-layer straight seam stainless steel composite pipe welding manufacturing process comprises the following steps: S1. Steel plate feeding: After closing the steel plate, place it outside the fixed pipe, and make the joint just above the matching groove, then push it into the system; S2. Clamping the steel plate: When the steel plate is pushed in, the moving mechanism is driven to move, so that the welding strip rises and abuts against the bottom of the joint. The welding strip rises, so that the transmission mechanism synchronously drives the clamping mechanism to open and clamp the outer end of the steel plate to fix the steel plate; S3, fixing the steel plate: after the steel plate moves to the locking inclined surface, it moves obliquely upward, so that the clamping plate falls down and clamps the edges on both sides of the joint of the steel plate; S4, unlock welding: When the steel plate moves, the laser welding instrument is driven to move synchronously. When it reaches the unlocking position, the laser welding instrument is released and the circuit is triggered to open the laser welding instrument at the same time; S5. Welding: After the laser welding device is unlocked, it moves horizontally to weld the steel plate; S6, welding is completed: After the laser welding instrument moves to the outermost end, the trigger circuit is closed, the laser emission stops, and the welding is completed.

[0024] The present invention arranges a moving mechanism to abut against the feeding end of the steel plate. When the steel plate is pushed in, the moving mechanism moves synchronously with the steel plate, and simultaneously drives the welding seam strip to rise and abut below the joint, so that there is a force point below the steel plate, which will not shrink inwards and finally weld into a heart-shaped structure due to excessive squeezing at the joint. When the welding seam strip rises, it will also drive the transmission mechanism to move, thereby synchronously driving the clamping mechanism to open and clamp the outer end of the steel plate to fix the steel plate, so that the steel plate can be automatically fixed and the two ends can be aligned, which will not cause uneven joints and the situation where the two ends are up and down after forming.

[0025] In an embodiment further provided by the present invention, in step S3, the locking slope is located in the rear section of the movement stroke of the steel plate.

[0026] In an embodiment further provided by the present invention, in step S4, the unlocking position is an unlocking block, which is located at the end of the movement stroke of the steel plate, and the movement of the steel plate to the unlocking block triggers unlocking.

[0027] The present invention also provides a multi-layer straight seam stainless steel composite pipe welding system, which is applied to the above-mentioned multi-layer straight seam stainless steel composite pipe welding manufacturing process, wherein a matching groove 304 is arranged on the surface of a fixed pipe 300, a welding strip 400 is slidably connected inside the matching groove 304, a connecting groove 401 is arranged on the lower surface of the welding strip 400, a transmission mechanism is arranged in the connecting groove 401, a moving mechanism is arranged at one end of the transmission mechanism, a clamping mechanism is arranged at the other end of the transmission mechanism, and the transmission mechanism and the clamping mechanism are both located inside the fixed pipe 300. After the steel plate is closed and pushed into the fixed pipe 300, the moving mechanism is driven to slide, thereby driving the welding strip 400 to slide upward and abut against the bottom of the joint under the drive of the transmission mechanism, so that when the welding strip 400 moves, it simultaneously drives the clamping mechanism to open and clamp the outer end of the steel plate to fix the steel plate.

[0028] Furthermore, a locking inclined tube 301 is fixedly connected to one end of the fixed tube 300 , and the inclined surface of the locking inclined tube 301 is parallel to the inclined surface of the locking inclined surface 205 .

[0029] Furthermore, a snap-fit ​​groove 303 is provided on the surface of the fixing tube 300 , and the snap-fit ​​groove 303 is used to cooperate with the snap-fit ​​mechanism to perform opening or closing movements.

[0030] In an embodiment further provided by the present invention, the transmission mechanism includes two connecting rods 402 rotatably connected in a connecting groove 401, and one end of the two connecting rods 402 is rotatably connected to two connecting seats 403, and the lower ends of the two connecting seats 403 are respectively fixedly connected to two first connecting sleeves 404, and one end of the two first connecting sleeves 404 is respectively provided with two connecting inner tubes 405.

[0031] Furthermore, the connection mode between the connecting inner tube 405 connected to the moving mechanism and the first connecting sleeve 404 is a fixed connection, and the connection mode between the other connecting inner tube 405 connected to the locking mechanism and the first connecting sleeve 404 is a sliding sleeve connection.

[0032] In an embodiment further provided by the present invention, the motion mechanism includes a first connecting block 305 fixedly connected to the surface of one of the connecting inner tubes 405, and a sliding ring 207 is slidably sleeved on the outside of the fixed tube 300, and the lower end of the first connecting block 305 is fixedly connected to the inner surface of the sliding ring 207, and a sliding groove 302 is also provided on the surface of the fixed tube 300, and the surface of the first connecting block 305 is slidably matched with the sliding groove 302.

[0033] Specifically, after the feeding end of the steel plate hits the sliding ring 207, it drives the sliding ring 207 to slide inward along the fixed tube 300, and drives the connecting rod 402 to rotate under the connection of the first connecting block 305, so that the connecting rod 402 lifts the welding strip 400, and the welding strip 400 slides upward in the matching groove 304 to protrude from the fixed tube 300, and then abuts against the bottom of the joint.

[0034] In an embodiment further provided by the present invention, the locking mechanism includes a top pipe 500 fixedly connected to one end of another connecting inner pipe 405, and a second connecting block 501 is fixedly connected to the surface of the top pipe 500, and one end of the second connecting block 501 is rotatably connected to a first locking seat 502, and one end of the first locking seat 502 is connected to a locking rod 503, and the outside of the locking rod 503 is slidably sleeved with a locking sleeve 504, and a locking plate 505 is fixedly connected to the surface of the locking sleeve 504, and a connecting plate 505 is fixedly connected to the surface of one side of the locking plate 505. 06, and one end of the connecting plate 506 is connected to the second connecting sleeve 507, and one end of the second connecting sleeve 507 is rotatably connected to the second connecting rod 508, and the surface of the second connecting rod 508 is fixedly connected to the first connecting strip 509, and one end of the first connecting strip 509 is rotatably connected to the second snap-fit ​​seat 510, and one end of the second snap-fit ​​seat 510 is connected to the second connecting strip 511, and one end of the second connecting strip 511 is rotatably connected to the third snap-fit ​​seat 512, and one end of the third snap-fit ​​seat 512 is fixedly connected to the surface of the same connecting inner tube 405.

[0035] Specifically, when the welding strip 400 moves, it drives the connecting inner tube 405 connected to the locking mechanism to slide outward, thereby driving the second connecting strip 511 to rotate, and the second connecting strip 511 drives the first connecting strip 509 to move and touch the second connecting rod 508, so that the second connecting rod 508 moves outward, and at the same time, the locking plate 505 is opened under the drive of the second connecting sleeve 507, and at the same time, the locking sleeve 504 slides outward on the locking rod 503 and drives the first locking seat 502 to rotate, and cooperates with the locking plate 505 to open, so that the locking plate 505 is opened to the position shown in FIG. Figure 4 The open state allows the clamping plate 505 to clamp the outermost end of the steel plate to fix the steel plate and align the steel plates at the same time.

[0036] In an embodiment further provided by the present invention, a sliding plate 206 is fixedly connected to the surface of a sliding ring 207, a sliding rail 204 is slidably connected to the upper surface of the sliding plate 206, a locking bevel 205 is arranged at the rear section of the sliding rail 204, a clamp 203 is fixedly connected to the upper surface of the sliding rail 204, a through hole is arranged on the upper surface of the clamp 203, a first connecting rod 201 is slidably connected in the through hole, a fixed plate 200 is fixedly connected to the upper end of the first connecting rod 201, a compression spring 202 is connected between the fixed plate 200 and the clamp 203, the compression spring 202 is located on the surface of the first connecting rod 201, and after the sliding ring 207 slides to the locking bevel 205, it moves obliquely upward so that the clamp 203 falls down and clamps both sides of the steel plate.

[0037] Specifically, when the sliding ring 207 slides to the locking inclined tube 301, the sliding plate 206 synchronously slides to the locking inclined surface 205, and then moves obliquely upward along the locking inclined surface 205, so that the sliding plate 206 is retracted into the sliding rail 204 and no longer lifts the clamping plate 203, so that the clamping plate 203 falls and clamps the two sides of the steel plate joint and fixes them on the welding strip 400.

[0038] In an embodiment further provided by the present invention, a locking rod 600 is fixedly connected to the surface of the sliding ring 207, a locking hole 601 is provided on the upper surface of the locking rod 600, a locking seat 602 is slidably sleeved on the upper end of the locking rod 600, a locking groove 603 is provided on one side surface of the locking seat 602, the locking rod 600 is located inside the locking groove 603, a square groove 604 is provided inside the locking seat 602, a limiting hole is provided on the upper surface of the locking seat 602, a locking tube 605 is slidably connected in the limiting hole, and the locking The lower end of the tube 605 is slidably matched with the locking hole 601, and an adjustment groove 606 is provided on the surface of the locking tube 605. An adjustment plate 607 is rotatably connected inside the adjustment groove 606. A locking plate 611 is connected to one end of the adjustment plate 607. Two adjustment blocks 609 are connected to the lower surface of the locking plate 611. A square plate 610 is rotatably connected between the two adjustment blocks 609. The lower end of the square plate 610 is slidably matched with the square groove 604, and a return spring 608 is connected between the locking plate 611 and the locking seat 602.

[0039] Furthermore, one end of the fixing plate 200 is fixedly connected to the supporting plate 102 , the locking inclined tube 301 is fixedly connected to one side surface of the supporting plate 102 , the lower surface of the supporting plate 102 is fixedly connected to the base 100 , and the lower surface of the base 100 is provided with a supporting foot 101 .

[0040] Furthermore, the unlocking block 104 is disposed on a side surface of the supporting plate 102 .

[0041] Furthermore, a mounting groove 105 is provided on one side surface of the support plate 102 , and one end of the clamping plate 203 and one end of the slide rail 204 are both slidably matched with the mounting groove 105 .

[0042] Specifically, after the steel plate slides to the unlocking position, the unlocking block 104 squeezes the locking plate 611 so that the locking plate 611 is pressed down, and the square plate 610 slides down, driving the adjustment plate 607 to tilt up, and the adjustment plate 607 tilts up and drives the locking tube 605 to rise and leave the locking hole 601, thereby releasing the locking fixation of the laser welding device 700, so that the steel plate is stationary and the laser welding device 700 moves on its own to weld.

[0043] In an embodiment further provided by the present invention, a laser welding device 700 is disposed on the other side surface of the locking seat 602, and a travel rod 703 is connected to the surface of one side of the laser welding device 700. A thick tube 704 is slidably sleeved on the outside of the travel rod 703. A guide sealing ring 705 is provided at the connection between the travel rod 703 and the thick tube 704. A first piston 706 is provided at one end of the travel rod 703. The first piston 706 is located inside the thick tube 704. A second piston 707 is also provided inside the thick tube 704. An inflation valve 708 is provided at one end of the thick tube 704.

[0044] Furthermore, the support plate 102 is provided with a mounting hole 103, the travel rod 703 passes through the mounting hole 103 and is connected to the thick tube 704, and one end of the thick tube 704 is fixed on one side surface of the support plate 102, and a travel track 702 is fixedly connected to one side surface of the support plate 102, and two travel blocks 701 are slidably connected in the travel track 702, and the two travel blocks 701 are respectively connected to the two side surfaces of the laser welding instrument 700.

[0045] Furthermore, a power socket 106 is provided on one side surface of the support plate 102 , trigger switches 107 are provided at both ends of the power socket 106 , and the upper end of the laser welding device 700 is slidably matched with the power socket 106 .

[0046] Specifically, hydraulic oil is filled between the guide sealing ring 705 and the first piston 706 to form a first buffer chamber, there is no filler between the first piston 706 and the second piston 707 to form a compression chamber, and compressed nitrogen is filled between the second piston 707 and the end of the thick tube 704 through the inflation valve 708 to form a second buffer chamber. Under the joint action of the three chambers, the reset movement of the laser welding device 700 is smooth and slow, so that the steel plate can be fully welded.

[0047] In the present invention, after the staff closes the steel plate, it is placed outside the fixed tube 300, and after the joint is located directly above the matching groove 304, it is pushed into the fixed tube 300. After the feeding end of the steel plate contacts the sliding ring 207, it drives the sliding ring 207 to slide inward along the fixed tube 300, and drives the connecting rod 402 to rotate under the connection of the first connecting block 305, so that the connecting rod 402 lifts the welding strip 400, so that the welding strip 400 slides upward in the matching groove 304 and protrudes out of the fixed tube 300, and then contacts the bottom of the joint. Then, when the welding strip 400 moves again, it drives the connecting inner tube 405 connected to the locking mechanism to slide outward, thereby driving the second connecting strip 511 to rotate, and the second connecting strip 511 drives the first connecting strip 509 to move and contact the second connecting rod 508, so that the second connecting strip 511 When the connecting rod 508 moves outward, the clamping plate 505 is opened under the drive of the second connecting sleeve 507, so that the clamping plate 505 clamps the outermost end of the steel plate to fix the steel plate and align the steel plates at the same time. When the sliding ring 207 slides to the locking inclined tube 301, the sliding plate 206 synchronously slides to the locking inclined surface 205, and then moves obliquely upward along the locking inclined surface 205, so that the sliding plate 206 is retracted into the slide rail 204, and no longer lifts the clamping plate 203, so that the clamping plate 203 falls and clamps the two sides of the steel plate joint and fixes them on the welding strip 400; during this movement, under the locking and fixing action of the locking seat 602, the laser welding instrument 700 will continue to move inward synchronously with the steel plate with the same stroke, and the stroke rod 703 will continue to be compressed into the thick tube 704. Subsequently, the steel plate slides to the unlocking position, the unlocking block 104 squeezes the locking plate 611 so that the locking plate 611 is pressed down, the square plate 610 slides down, and the adjustment plate 607 tilts up, and the adjustment plate 607 tilts up and drives the locking tube 605 to rise and leave the locking hole 601, releasing the locking fixation of the laser welding apparatus 700, and at this time, the upper end of the laser welding apparatus 700 presses the innermost trigger switch 107, so that the circuit is opened and the laser welding apparatus 700 is started to emit laser. After the unlocking is released, the steel plate is fixed firmly, and the travel rod 703 begins to reset, thereby driving the laser welding apparatus 700 to move outward steadily and slowly with the same length as the steel plate, and the steel plate is welded by self-movement. After the welding is completed, the laser welding apparatus 700 presses the outermost trigger switch 107, so that the circuit is closed, and the laser welding apparatus 700 stops emitting laser, and the welding is completed.

[0048] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multi-layer straight seam stainless steel composite pipe welding manufacturing process, characterized in that: The steps include: S1. Steel plate feeding: After closing the steel plate, place it outside the fixed pipe, and make the joint just above the matching groove, then push it into the system; S2. Clamping the steel plate: When the steel plate is pushed in, the moving mechanism is driven to move, so that the welding strip rises and abuts against the bottom of the joint. The welding strip rises, so that the transmission mechanism synchronously drives the clamping mechanism to open and clamp the outer end of the steel plate to fix the steel plate; S3, fixing the steel plate: after the steel plate moves to the locking inclined surface, it moves obliquely upward, so that the clamping plate falls down and clamps the edges on both sides of the joint of the steel plate; S4, unlock welding: When the steel plate moves, the laser welding instrument is driven to move synchronously. When it reaches the unlocking position, the laser welding instrument is released and the circuit is triggered to open the laser welding instrument at the same time; S5. Welding: After the laser welding device is unlocked, it moves horizontally to weld the steel plate; S6, welding is completed: After the laser welding instrument moves to the outermost end, the trigger circuit is closed, the laser emission stops, and the welding is completed.

2. A multi-layer straight seam stainless steel composite pipe welding manufacturing process according to claim 1, characterized in that: In step S3, the locking slope is located at the rear section of the steel plate's movement stroke.

3. A multi-layer straight seam stainless steel composite pipe welding manufacturing process according to claim 2, characterized in that: In step S4, the unlocking position is an unlocking block, which is located at the end of the movement stroke of the steel plate. The steel plate moves to the unlocking block to trigger unlocking.

4. A multi-layer straight seam stainless steel composite pipe welding system, which is applied to the multi-layer straight seam stainless steel composite pipe welding manufacturing process according to any one of claims 1 to 3, characterized in that: The matching groove (304) is provided on the surface of the fixed tube (300), the welding strip (400) is slidably connected inside the matching groove (304), a connecting groove (401) is provided on the lower surface of the welding strip (400), the transmission mechanism is provided in the connecting groove (401), the moving mechanism is provided at one end of the transmission mechanism, the locking mechanism is provided at the other end of the transmission mechanism, and the transmission mechanism and the locking mechanism are both located inside the fixed tube (300), after the steel plate is closed and pushed into the fixed tube (300), the moving mechanism is driven to slide, so that the welding strip (400) is driven by the transmission mechanism to slide upward to abut below the joint, so that when the welding strip (400) moves, the locking mechanism is synchronously driven to open and lock the outer end of the steel plate to fix the steel plate.

5. A multi-layer straight seam stainless steel composite pipe welding system according to claim 4, characterized in that: The transmission mechanism comprises two connecting rods (402) rotatably connected in the connecting groove (401), one end of the two connecting rods (402) is rotatably connected to two connecting seats (403), the lower ends of the two connecting seats (403) are respectively fixedly connected to two first connecting sleeves (404), and one end of the two first connecting sleeves (404) is respectively provided with two connecting inner tubes (405).

6. A multi-layer straight seam stainless steel composite pipe welding system according to claim 5, characterized in that: The motion mechanism comprises a first connection block (305) fixedly connected to the surface of one of the connecting inner tubes (405), and a sliding ring (207) is slidably sleeved on the outside of the fixed tube (300), and the lower end of the first connection block (305) is fixedly connected to the inner surface of the sliding ring (207), and a sliding groove (302) is also provided on the surface of the fixed tube (300), and the surface of the first connection block (305) is slidably matched with the sliding groove (302).

7. A multi-layer straight seam stainless steel composite pipe welding system according to claim 6, characterized in that: The locking mechanism comprises a top tube (500) fixedly connected to one end of another connecting inner tube (405), and a second connecting block (501) is fixedly connected to the surface of the top tube (500), and one end of the second connecting block (501) is rotatably connected to a first locking seat (502), and one end of the first locking seat (502) is connected to a locking rod (503), and a locking sleeve (504) is slidably sleeved on the outside of the locking rod (503), and a locking plate (505) is fixedly connected to the surface of the locking sleeve (504), and a connecting plate (506) is fixedly connected to one side surface of the locking plate (505), and the connecting One end of the connecting plate (506) is connected to a second connecting sleeve (507), and one end of the second connecting sleeve (507) is rotatably connected to a second connecting rod (508), and the surface of the second connecting rod (508) is fixedly connected to a first connecting strip (509), and one end of the first connecting strip (509) is rotatably connected to a second engaging seat (510), and one end of the second engaging seat (510) is connected to a second connecting strip (511), and one end of the second connecting strip (511) is rotatably connected to a third engaging seat (512), and one end of the third engaging seat (512) is fixedly connected to the surface of the same connecting inner tube (405).

8. A multi-layer straight seam stainless steel composite pipe welding system according to claim 7, characterized in that: The surface of the sliding ring (207) is fixedly connected to a sliding plate (206), the upper surface of the sliding plate (206) is slidably connected to a sliding rail (204), the locking bevel (205) is arranged at the rear section of the sliding rail (204), the clamping plate (203) is fixedly connected to the upper surface of the sliding rail (204), the upper surface of the clamping plate (203) is provided with a through hole, a first connecting rod (201) is slidably connected in the through hole, the upper end of the first connecting rod (201) is fixedly connected to a fixed plate (200), a compression spring (202) is connected between the fixed plate (200) and the clamping plate (203), the compression spring (202) is located on the surface of the first connecting rod (201), and after the sliding ring (207) slides to the locking bevel (205), it moves obliquely upward, so that the clamping plate (203) falls down and clamps both sides of the steel plate.

9. A multi-layer straight seam stainless steel composite pipe welding system according to claim 8, characterized in that: The surface of the sliding ring (207) is also fixedly connected to a locking rod (600), the upper surface of the locking rod (600) is provided with a locking hole (601), the upper end of the locking rod (600) is slidably sleeved with a locking seat (602), a side surface of the locking seat (602) is provided with a locking groove (603), the locking rod (600) is located inside the locking groove (603), the locking seat (602) is provided with a square groove (604), the upper surface of the locking seat (602) is provided with a limiting hole, a locking tube (605) is slidably connected in the limiting hole, and the lower end of the locking tube (605) is provided with a locking tube (605). The locking tube (605) is provided with an adjustment groove (606) on its surface, which is rotatably matched with the locking hole (601). An adjustment plate (607) is rotatably connected inside the adjustment groove (606). One end of the adjustment plate (607) is connected to a locking plate (611). Two adjustment blocks (609) are connected to the lower surface of the locking plate (611). A square plate (610) is rotatably connected between the two adjustment blocks (609). The lower end of the square plate (610) is slidably matched with the square groove (604). A return spring (608) is connected between the locking plate (611) and the locking seat (602).

10. A multi-layer straight seam stainless steel composite pipe welding system according to claim 9, characterized in that: The laser welding device (700) is arranged on the other side surface of the locking seat (602), and a travel rod (703) is connected to the surface of one side of the laser welding device (700). A thick tube (704) is slidably sleeved on the outside of the travel rod (703), and a guide sealing ring (705) is arranged at the connection between the travel rod (703) and the thick tube (704). A first piston (706) is arranged at one end of the travel rod (703), and the first piston (706) is located inside the thick tube (704). A second piston (707) is also arranged inside the thick tube (704), and an inflation valve (708) is arranged at one end of the thick tube (704).

Images