Automatic welding equipment for stainless steel pipe and working method thereof

Abstract

The present invention relates to the technical field of stainless steel pipe welding, and in particular to an automatic welding device for stainless steel pipes and a working method thereof, comprising a conveyor belt, a feeding frame, an alignment part, a welding part and a concave support platform, wherein the conveyor belt is used to continuously transport the steel pipe body to be welded into the feeding frame; the upper end of the feeding frame is provided with a conical funnel mouth, and a plurality of steel pipe bodies are stacked transversely in the feeding frame, and a pair of bearing arc plates are fixedly connected to the lower ends of both ends of the feeding frame, and balls are provided on the inner sides of the bearing arc plates; the alignment part comprises an alignment wheel, the outer edge thickness of the alignment wheel is adapted to the weld seam of the steel pipe body, the alignment wheel is correspondingly arranged at the lower end of the feeding frame, the lower end of the wheel frame of the alignment wheel is provided with a spring telescopic rod 1, the lower end of the spring telescopic rod 1 is provided with a fixed box, and the fixed box is fixed to the lower end of the concave support platform. The present invention realizes the automatic alignment function conveniently and efficiently.

Description

Technical Field

[0001] The invention relates to the technical field of stainless steel pipe welding, and in particular to automatic welding equipment for stainless steel pipes and a working method thereof. Background Art

[0002] Steel pipe is a common tool in existing industrial machinery. It can not only be used to transport fluids and powdered solids, exchange heat energy, manufacture mechanical parts and containers, but also be used as building materials. The production process of steel pipe is generally that the steel strip is rolled up gradually through multiple rollers to form a round tube blank with a weld. The round tube blank is welded by a welding device to form a steel pipe.

[0003] In the existing Chinese utility model patent with patent announcement number CN214350540U, a steel pipe weld positioning device is disclosed, which includes a base frame and a base, and the base frame and the base are arranged in sequence along the transmission direction of the steel pipe; a positioning wheel is rotatably connected to the base frame, and the outer edge of the positioning wheel is provided with a positioning strip along its circumference, the positioning strip is located in the weld of the steel pipe, and the positioning strip is in contact with the side wall of the weld of the steel pipe; two load-bearing wheels are rotatably connected to the base, and the two load-bearing wheels are respectively located on both sides of the steel pipe in the width direction, and each load-bearing wheel is in close contact with the outer side wall of the steel pipe; the two load-bearing wheels and the positioning wheel are distributed in a triangle, and during the transmission of the steel pipe, the positioning wheel and the load-bearing wheel both rotate along the transmission direction of the steel pipe.

[0004] In the above technical solution, the positioning bar on the positioning wheel is located in the weld of the steel pipe, and the two load-bearing wheels are respectively located on both sides of the width direction of the welded steel pipe. The positioning wheel and the two load-bearing wheels form a triangular distribution, so as to position the steel pipe in transmission. At the same time, the positioning bar on the positioning wheel can keep the weld from moving during the transmission of the steel pipe. However, the technical solution does not disclose the corresponding alignment mechanism. When positioning the steel pipe, it is still necessary to manually rotate the steel pipe so that the positioning wheel is aligned with the weld for positioning in order to achieve alignment. The degree of automation is low, which reduces work efficiency.

[0005] Therefore, it is necessary to provide an automatic welding device for stainless steel pipes and a working method thereof, which can achieve the effect of automatic alignment. Summary of the invention

[0006] The object of the present invention is to provide an automatic welding device for stainless steel pipes and a working method thereof to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: an automatic welding device for stainless steel pipes and a working method thereof, comprising a conveyor belt, a blanking frame, an alignment part, a welding part and a concave support table,

[0008] The conveyor belt is used to continuously transport the steel pipe body to be welded into the unloading frame;

[0009] The upper end of the blanking frame is provided with a conical funnel mouth, and a plurality of steel pipe bodies are stacked transversely in the blanking frame. A pair of bearing arc plates are fixedly connected to the lower ends of both ends of the blanking frame, and a ball bearing is provided on the inner side of the bearing arc plate;

[0010] The alignment part includes an alignment wheel, the outer edge thickness of the alignment wheel is adapted to the weld of the steel pipe body, the alignment wheel is correspondingly arranged at the lower end of the blanking frame, a spring telescopic rod 1 is arranged at the lower end of the wheel frame of the alignment wheel, a fixing box is arranged at the lower end of the spring telescopic rod 1, the fixing box is fixed to the lower end of the concave support platform, and the wheel frame of the alignment wheel penetrates the concave support platform and slides with it;

[0011] The alignment part also includes a plurality of driving wheels, which are symmetrically arranged on both sides of the concave support platform. A linear driving mechanism is arranged on one side of the driving wheel, and the linear driving mechanism drives the driving wheel to move and fit on the surface of the steel pipe body. When the axis of the driving wheel is parallel to the axis of the steel pipe body, the driving wheel drives the steel pipe body to rotate along its axis.

[0012] A plurality of extrusion wheels are arranged on the inner side of the concave support platform, and a concave surface matching the steel pipe body is arranged on the inner side of the extrusion wheel. A plurality of spring telescopic rods are arranged between the extrusion wheel and the concave support platform. The extrusion wheels on both sides extrude and transport the steel pipe body. A plurality of driving concave wheels are arranged on the central upper end of the concave support platform. The driving concave wheels are driven to rotate by the motor assembly and drive the steel pipe body to be transported.

[0013] The welding part comprises a bracket, the bracket is fixed to the lower end of the concave support platform, and a welding gun is arranged on the lower side of the bracket.

[0014] In one embodiment, a pair of flip baffles are fixedly connected to the two ends of the lower end of the discharge frame, and the flip baffles extend to the lower end outlet of the discharge frame, and the outer ends of the flip baffles are fixedly connected to hinge seats, and the two ends of the hinge seats are rotatably connected to fixed blocks, and the fixed blocks are fixedly connected to the discharge frame, and a hinge rod is rotatably connected between the fixed blocks, and the hinge rod passes through the hinge seat and is fixedly connected to the hinge seat, and the two ends of the hinge rod are fixedly connected to gear one, and a double rack is meshedly connected between the pair of gears one, and the double rack is slidably matched with the side wall of the discharge frame, and the double rack is driven to move by a cylinder assembly.

[0015] In one embodiment, four transverse grooves are formed through the lower side of the blanking frame, and an L-shaped baffle is slidably fitted in the transverse groove. A plurality of spring telescopic rods three are provided on the upper end of the L-shaped baffle, and the spring telescopic rods three are connected to the blanking frame. The L-shaped baffle extends into the blanking frame and blocks the blanking of a plurality of steel pipe bodies, and the spacing between the L-shaped baffle and the flip baffle is equal to the diameter of a single steel pipe body.

[0016] In one embodiment, a rack groove is provided at the lower end of the L-shaped baffle, and an arc-shaped tooth is fixedly connected to the outer side of the hinge seat. The arc-shaped tooth and the rack groove are meshed with each other. When the flip baffle is in a horizontal state, the L-shaped baffle is away from the blanking frame.

[0017] In one embodiment, the linear drive mechanism includes a moving frame, a plurality of guide telescopic rods are arranged between the two ends of the moving frame and the concave support platform, a pair of fixed plates are fixedly connected to the middle side of the moving frame, a disc member is rotatably connected to the inner side of the fixed plate, a pair of support rods are fixedly connected to the inner side of the disc member, and the driving wheel is rotatably connected between the pair of support rods.

[0018] In one embodiment, the lower end of the double rack is hingedly connected to a pair of connecting rods, one end of the connecting rod is hingedly connected to the two ends of the movable frame, and when the flip baffle is in a horizontal state, the connecting rod is in an inclined state and the driving wheel is in contact with the steel pipe body.

[0019] In one embodiment, a rotating rod is fixedly connected to the inner side of the driving wheel, one end of the rotating rod passes through the supporting rod and is rotatably connected thereto, one end of the rotating rod is fixedly connected to gear 2, one side of the gear 2 is meshingly connected to gear 3, one end of the gear 3 is fixedly connected to a rotating shaft, the rotating shaft passes through the supporting rod and the through-end is fixedly connected to a bevel gear part, one end of the bevel gear part is meshingly connected to a bevel gear disk, and the bevel gear disk is rotatably connected to the disc part.

[0020] In one embodiment, one end of the bevel gear disk is fixedly connected to a center rod, and the center rod passes through the disc member and the fixed plate and is rotatably connected thereto; one end of the center rod is fixedly connected to a pulley member, and the pulley member is rotatably connected to the fixed plate, and the pulley members on both sides are connected by a transmission belt, and the outer end of the pulley member on either side is fixedly connected to a torque sleeve, and a key slot is provided at the outer end of the torque sleeve, and a torsion rod is slidably fitted in the torque sleeve, and the outer end of the torsion rod is fixedly connected to a driving key, and the driving key and the key slot are engaged with each other, and the torsion rod is driven to rotate by the motor member.

[0021] In one embodiment, there is friction between the disc member and the bevel gear plate, and a pair of limit blocks are fixedly connected to the outer end of the disc member, and the pair of limit blocks are symmetrically arranged. One end of the fixed plate is fixedly connected to a pair of limit seats, and the pair of limit seats limit the rotation angle of the disc member.

[0022] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: in the present invention, a plurality of steel pipe bodies to be welded are transported sequentially to a blanking frame by a conveyor belt, and the upper end of the blanking frame is arranged as a conical funnel mouth, thereby further increasing the fault tolerance of the falling of the steel pipe bodies, so that a plurality of steel pipe bodies are blanked into the blanking frame and stacked sequentially, and sequentially fall onto a pair of bearing arc plates, and a plurality of balls are arranged on the upper ends of the bearing arc plates, and the balls adapt to the movement of the steel pipe bodies, so as to facilitate the rotation or axial movement of the steel pipe bodies themselves, and when the steel pipe bodies fall on the bearing arc plates, the aligning wheels at the lower ends are pressed down, and the aligning wheels are in close contact with the lower ends of the steel pipe bodies and are elastically moved. The spring telescopic rod is adapted to extend and retract, so that the outer edge of the alignment wheel can be stuck in the weld of the steel pipe body, thereby limiting the position of the steel pipe body. Specifically, the alignment part drives the driving wheels on both sides to move relatively and fit on the two ends of the steel pipe body by using a linear drive mechanism, and then drives the steel pipe body to rotate by the rotation of the driving wheel, and the alignment wheel fits on the lower end of the steel pipe body until the steel pipe body rotates the weld to correspond to the alignment wheel. The alignment wheel can be stuck in the weld of the steel pipe body, so that the steel pipe body is restricted from axial displacement to between several extrusion wheels, and then the steel pipe body in the blanking frame falls to the load-bearing arc plate, and the next round of alignment work can be started;

[0023] Subsequently, the weld seams of the steel pipe body are squeezed and merged by the extrusion wheels on both sides under the elastic force of the spring telescopic rod 2, and the steel pipe body is transmitted by driving the concave wheel, so that the steel pipe body passes through the welding part and its weld seams are welded by the welding gun, thereby completing the automatic alignment of the weld seams of the steel pipe body and performing the welding process, with a high degree of automation, suitable for mass production, and greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0025] In the attached picture:

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 is a side cross-sectional schematic diagram of the present invention;

[0028] Figure 3 It is a three-dimensional schematic diagram of a blanking frame of the present invention;

[0029] Figure 4 is a front cross-sectional schematic diagram of the present invention;

[0030] Figure 5 It is a partial three-dimensional schematic diagram of the alignment part of the present invention;

[0031] Figure 6 It is a bottom schematic diagram of the alignment part of the present invention;

[0032] Figure 7 yes Figure 6 A local enlarged schematic diagram of region A;

[0033] Figure 8 is a schematic cross-sectional view of a torsion bar of the present invention;

[0034] Fig. 9 yes Figure 5 A local enlarged schematic diagram of area B;

[0035] Fig.10 It is a three-dimensional schematic diagram of the limiting seat of the present invention;

[0036] In the figure: 1, blanking frame; 101, load-bearing arc plate; 102, ball bearing; 103, flip baffle; 104, hinge seat; 105, fixing block; 106, hinge rod; 107, gear one; 108, double rack; 109, L-shaped baffle; 110, spring telescopic rod three; 111, arc-shaped teeth; 112, connecting rod;

[0037] 2. Alignment part; 201. Alignment wheel; 202. Spring telescopic rod 1; 203. Driving wheel; 204. Moving frame; 205. Guide telescopic rod; 206. Fixed plate; 207. Disc; 208. Support rod;

[0038] 3. Welding part; 301. Bracket; 302. Welding gun;

[0039] 4. Concave support platform; 401. Extrusion wheel; 402. Spring telescopic rod 2; 403. Gear 2; 404. Gear 3; 405. Bevel gear; 406. Bevel gear plate; 407. Center rod; 408. Pulley; 409. Torque sleeve; 410. Torque rod; 411. Drive key;

[0040] 5. Limit block; 501. Limit seat;

[0041] 6. Steel pipe body;

[0042] 7. Conveyor belt;

[0043] 8. Cylinder assembly; 801. Motor parts;

[0044] 9. Drive concave wheel. DETAILED DESCRIPTION

[0045] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0046] See also Figure 1-10 The present invention provides a technical solution: an automatic welding device for stainless steel pipes and a working method thereof, comprising a conveyor belt 7, a blanking frame 1, an alignment part 2, a welding part 3 and a concave support table 4,

[0047] The conveyor belt 7 is used to continuously transport the steel pipe body 6 to be welded into the unloading frame 1;

[0048] The upper end of the blanking frame 1 is provided with a conical funnel mouth, and a plurality of steel pipe bodies 6 are stacked transversely in the blanking frame 1. A pair of load-bearing arc plates 101 are fixedly connected to the lower ends of both ends of the blanking frame 1, and a ball bearing 102 is provided on the inner side of the load-bearing arc plates 101;

[0049] The alignment part 2 includes an alignment wheel 201, the outer edge thickness of the alignment wheel 201 is adapted to the weld of the steel pipe body 6, the alignment wheel 201 is correspondingly arranged at the lower end of the blanking frame 1, the lower end of the wheel frame of the alignment wheel 201 is provided with a spring telescopic rod 202, the lower end of the spring telescopic rod 202 is provided with a fixed box, the fixed box is fixed to the lower end of the concave support platform 4, the wheel frame of the alignment wheel 201 penetrates the concave support platform 4 and slides with it;

[0050] The alignment part 2 also includes a plurality of driving wheels 203, which are symmetrically arranged on both sides of the concave support platform 4. A linear driving mechanism is arranged on one side of the driving wheel 203, and the linear driving mechanism drives the driving wheel 203 to move and fit on the surface of the steel pipe body 6. When the axis of the driving wheel 203 is parallel to the axis of the steel pipe body 6, the driving wheel 203 drives the steel pipe body 6 to rotate along its axis.

[0051] A plurality of extrusion wheels 401 are arranged on the inner side of the concave support platform 4, and a concave surface matching the steel pipe body 6 is arranged on the inner side of the extrusion wheel 401. A plurality of spring telescopic rods 402 are arranged between the extrusion wheel 401 and the concave support platform 4. The extrusion wheels 401 on both sides extrude and transport the steel pipe body 6. A plurality of driving concave wheels 9 are arranged on the central upper end of the concave support platform 4. The driving concave wheels 9 are driven to rotate by the motor assembly and drive the steel pipe body 6 to transport.

[0052] The welding part 3 includes a bracket 301 . The bracket 301 is fixed to the lower end of the concave support platform 4 . A welding gun 302 is disposed at the lower side of the bracket 301 .

[0053] A plurality of steel pipe bodies 6 to be welded are transported to the blanking frame 1 in sequence by means of a conveyor belt 7. The upper end of the blanking frame 1 is arranged to have a conical funnel mouth, thereby further increasing the fault tolerance of the steel pipe bodies 6 falling, so that a plurality of steel pipe bodies 6 are discharged into the blanking frame 1 and stacked in sequence, and fall onto a pair of bearing arc plates 101 in sequence. A plurality of ball bearings 102 are arranged at the upper end of the bearing arc plates 101. The ball bearings 102 adapt to the movement of the steel pipe bodies 6, so as to facilitate the rotation or axial movement of the steel pipe bodies 6 themselves. When the steel pipe bodies 6 fall on the bearing arc plates 101, the alignment wheel 201 at the lower end is pressed down. The alignment wheel 201 is in close contact with the lower end of the steel pipe bodies 6 and is adapted to the alignment wheel 201 by means of a spring telescopic rod 202. Preferably, the outer edge of the alignment wheel 201 The partial setting is adapted to the weld, so that the outer edge of the alignment wheel 201 can be stuck in the weld of the steel pipe body 6, thereby limiting the position of the steel pipe body 6. Specifically, the alignment part 2 drives the driving wheels 203 on both sides to move relatively and fit on the two ends of the steel pipe body 6 by using a linear drive mechanism, and then drives the steel pipe body 6 to rotate by the rotation of the driving wheel 203. The alignment wheel 201 fits on the lower end of the steel pipe body 6 until the steel pipe body 6 rotates the weld to correspond to the alignment wheel 201. The alignment wheel 201 can be stuck in the weld of the steel pipe body 6, so that the steel pipe body 6 is restricted from axial displacement to between a plurality of extrusion wheels 401. Then the steel pipe body 6 in the blanking frame 1 falls to the load-bearing arc plate 101, and the next round of alignment work can be started.

[0054] Subsequently, the welds of the steel pipe body 6 are squeezed and merged by the extrusion wheels 401 on both sides under the elastic force of the spring telescopic rod 2 402, and the steel pipe body 6 is transmitted by driving the concave wheel 9, so that the steel pipe body 6 passes through the welding part 3 and is welded by the welding gun 302, so that the welds of the steel pipe body 6 can be automatically aligned and welded, with a high degree of automation, suitable for mass production, and greatly improved work efficiency.

[0055] A pair of flip baffles 103 are fixedly connected to the two ends of the lower end of the blanking frame 1, and the flip baffles 103 extend to the lower end outlet of the blanking frame 1. The outer end of the flip baffle 103 is fixedly connected to a hinge seat 104, and the two ends of the hinge seat 104 are rotatably connected to fixed blocks 105, and the fixed blocks 105 are fixedly connected to the blanking frame 1. A hinge rod 106 is rotatably connected between the fixed blocks 105, and the hinge rod 106 passes through the hinge seat 104 and is fixedly connected thereto. A gear 107 is fixedly connected to the two ends of the hinge rod 106, and a double rack 108 is meshedly connected between the pair of gears 107. The double rack 108 slides with the side wall of the blanking frame 1, and the double rack 108 is driven to move by the cylinder assembly 8.

[0056] Preferably, in order to allow the steel pipe bodies 6 in the blanking frame 1 to be discharged in an orderly manner, a pair of flip baffles 103 are provided at the bottom. Specifically, in the initial state, the pair of flip baffles 103 are in a horizontal state, thereby restricting a plurality of steel pipe bodies 6 in the blanking frame 1, until the steel pipe bodies 6 on the inner side of the lower side bearing arc plate 101 are aligned and transmitted out, and then the double racks 108 are driven to move by the cylinder assembly 8, and the double racks 108 are meshed with the gears 107 at both ends, driving the gears 107 at both ends to move in the opposite directions. Rotation, thereby driving the hinge rod 106 to rotate, and the hinge rod 106 drives the hinge seats 104 at both ends to rotate relative to each other, thereby driving the flip baffle 103 to flip, and opening the lower end outlet of the unloading frame 1, so that the steel pipe body 6 on the upper side can be unloaded, thereby avoiding that when the steel pipe body 6 at the upper end of the supporting arc plate 101 is aligned, the several steel pipe bodies 6 in the unloading frame 1 are all pressed on the upper end of the steel pipe body 6 being aligned, increasing the gravity of the steel pipe body 6 itself, thereby further increasing the friction during the alignment rotation or axial movement.

[0057] Four transverse grooves are formed through the lower side of the blanking frame 1, and an L-shaped baffle 109 is slidably fitted in the transverse groove. A plurality of spring telescopic rods 110 are provided on the upper end of the L-shaped baffle 109, and the spring telescopic rods 110 are connected to the blanking frame 1. The L-shaped baffle 109 extends into the blanking frame 1 and blocks the blanking of a plurality of steel pipe bodies 6. The spacing between the L-shaped baffle 109 and the flip baffle 103 is equal to the diameter of a single steel pipe body 6.

[0058] Preferably, since a plurality of steel pipe bodies 6 are stacked in the blanking frame 1 and each steel pipe body 6 needs to be screened and blanked individually, an L-shaped baffle 109 is provided, and the L-shaped baffle 109 does not hinder the falling of the steel pipe body 6 in the initial state (such as Figure 4As shown in the figure), when the flip baffle 103 is flipped relative to each other, the L-shaped baffles 109 at both ends move relative to each other, thereby getting stuck at the upper end of the steel pipe body 6 at the lower end to prevent the steel pipe body 6 on the upper side from falling. The flip baffle 103 is flipped open, so that the steel pipe body 6 at the lower end of the L-shaped baffle 109 falls alone, completing the unloading and realizing the separate screening of several steel pipe bodies 6. Then the flip baffle 103 and the L-shaped baffle 109 are reset, and the steel pipe body 6 at the lower end falls between the flip baffle 103 and the L-shaped baffle 109, which is convenient for the next round of screening and unloading, and further improves the stability of unloading of a single steel pipe body 6.

[0059] A rack groove is formed at the lower end of the L-shaped baffle 109 , and an arc-shaped tooth 111 is fixedly connected to the outer side of the hinge seat 104 . The arc-shaped tooth 111 meshes with the rack groove. When the flip baffle 103 is in a horizontal state, the L-shaped baffle 109 is away from the blanking frame 1 .

[0060] Specifically, arc-shaped teeth 111 and rack grooves are provided, and the two mesh with each other, so that the hinge seat 104 drives the L-shaped baffle 109 to move while driving the flip baffle 103 to flip, so that when a pair of flip baffles 103 open the outlet of the unloading frame 1, a pair of L-shaped baffles 109 are inserted between several stacked steel pipe bodies 6, so as to automatically screen out a single steel pipe body 6 and unload the material. That is to say, the flip baffle 103 and the L-shaped baffle 109 alternately limit several steel pipe bodies 6 and continuously screen out a single steel pipe body 6 for unloading, and the two have good synchronization and save costs.

[0061] The linear drive mechanism includes a moving frame 204, a plurality of guide telescopic rods 205 are arranged between the two ends of the moving frame 204 and the concave support platform 4, a pair of fixed plates 206 are fixedly connected to the middle side of the moving frame 204, a disc member 207 is rotatably connected to the inner side of the fixed plate 206, a pair of support rods 208 are fixedly connected to the inner side of the disc member 207, and the driving wheel 203 is rotatably connected between the pair of support rods 208.

[0062] Preferably, in order to ensure that the driving wheel 203 drives the steel pipe body 6 stably, a linear driving mechanism is provided to drive the driving wheel 203 to move, thereby ensuring that the driving wheel 203 is in close contact with the surface of the steel pipe body 6. Specifically, the moving frame 204 is guided by the guide telescopic rod 205 to move linearly, and the moving frame 204 can drive a pair of fixed plates 206, a disc member 207, a support rod 208 and the driving wheel 203 to move, so that the driving wheel 203 moves and is in close contact with the steel pipe body 6, and the steel pipe body 6 can be driven to rotate and find the correct position.

[0063] Preferably, the disc 207 is rotatably connected to the fixing plate 206, so that the disc 207 can drive the driving wheel 203 to rotate relatively, so that when the axis of the driving wheel 203 is parallel to the axis of the steel pipe body 6, the driving wheel 203 can rotate to drive the steel pipe body 6 to rotate along its axis for alignment. After alignment, the disc 207 drives the driving wheel 203 to rotate 90 degrees. At this time, the center end of the driving wheel 203 is still in contact with the steel pipe body 6, so that the steel pipe body 6 can be driven to move axially between the plurality of extrusion wheels 401 for subsequent welding work. That is to say, the driving wheel 203 can drive the steel pipe body 6 to rotate and further drive it to move, which is highly practical and saves costs.

[0064] Preferably, the driving wheel 203 is made of rubber material to further increase the surface friction and improve the stability of the driving steel pipe body 6.

[0065] The lower end of the double rack 108 is hingedly connected to a pair of connecting rods 112, one end of the connecting rod 112 is hingedly connected to the two ends of the movable frame 204, and when the flip baffle 103 is in a horizontal state, the connecting rod 112 is in an inclined state and the driving wheel 203 is in contact with the steel pipe body 6.

[0066] Preferably, a connecting rod 112 is provided to connect the double rack 108 and the moving frame 204, so that in the initial state, the flip baffle 103 is in a horizontal state, the connecting rod 112 is in an inclined state, and the driving wheel 203 is in contact with the steel pipe body 6, so that the steel pipe body 6 can be driven to align the welding position, and then it is transferred to the next process after alignment, and then the double rack 108 moves downward to drive the flip baffle 103 to open the unloading port, so that a single steel pipe body 6 is unloaded. At the same time, the double rack 108 descends and drives a pair of connecting rods 112 to move. The connecting rods 112 push the moving frames 204 on both sides away from each other, so that the two sides The driving wheels 203 are separated from each other to facilitate the steel pipe body 6 to fall into the middle, and then the double rack 108 rises and resets, thereby driving the flip baffle 103 to reset, and re-limiting the several steel pipe bodies 6 on the upper side, and the connecting rods 112 on both sides pull the mobile frame 204 to reset, so that the driving wheels 203 on both sides are attached to the two ends of the steel pipe body 6 to be aligned, and the alignment work can be carried out. In other words, only by moving the double rack 108, the flip baffle 103 can be driven to control the unloading, and the displacement of the driving wheel 203 can also be controlled. It has strong practicality, good process synchronization, and a high degree of automation. No additional driving components are required to drive the mobile frame 204, saving costs.

[0067] A rotating rod is fixedly connected to the inner side of the driving wheel 203, one end of the rotating rod passes through the supporting rod 208 and is rotatably connected thereto, one end of the rotating rod is fixedly connected to gear 2 403, one side of gear 2 403 is meshingly connected to gear 3 404, one end of gear 3 404 is fixedly connected to a rotating shaft, the rotating shaft passes through the supporting rod 208 and the passing end is fixedly connected to a bevel gear member 405, one end of the bevel gear member 405 is meshingly connected to a bevel gear disk 406, and the bevel gear disk 406 is rotatably connected to the disc member 207.

[0068] Preferably, when the driving wheel 203 needs to be driven to rotate, the bevel gear plate 406 is rotated to drive the bevel gear part 405, the rotating shaft and the gear three 404 to rotate, and the gear three 404 drives the gear two 403 and the rotating rod to rotate, thereby driving the driving wheel 203 to rotate and drive the steel pipe body 6.

[0069] One end of the bevel gear disk 406 is fixedly connected to a center rod 407, and the center rod 407 passes through the disc member 207 and the fixed plate 206 and is rotatably connected thereto. One end of the center rod 407 is fixedly connected to a pulley member 408, and the pulley member 408 is rotatably connected to the fixed plate 206. The pulley members 408 on both sides are connected by a transmission belt. The outer end of the pulley member 408 on either side is fixedly connected to a torque sleeve 409, and a key slot is provided at the outer end of the torque sleeve 409. A torsion rod 410 is slidably fitted in the torque sleeve 409, and the outer end of the torsion rod 410 is fixedly connected to a drive key 411, and the drive key 411 is engaged with the key slot, and the torsion rod 410 is driven to rotate by the motor member 801.

[0070] Preferably, when it is necessary to drive the bevel gear disk 406 to rotate, the torsion bar 410 is driven to rotate through the motor component 801, the torsion bar 410 is inserted into the torque sleeve 409, and the driving key 411 is inserted into the key slot to transmit the torque to the torque sleeve 409, and does not affect the movable frame 204 to drive the torque sleeve 409 to move axially. The torque sleeve 409 drives the pulley component 408 to rotate, and the center rod 407 at both ends can be driven to rotate through the transmission belt, and the center rod 407 can drive the bevel gear disk 406 to rotate.

[0071] There is friction between the disc member 207 and the bevel gear plate 406. A pair of limit blocks 5 are fixedly connected to the outer end of the disc member 207. The pair of limit blocks 5 are symmetrically arranged. A pair of limit seats 501 are fixedly connected to one end of the fixed plate 206. The pair of limit seats 501 limit the rotation angle of the disc member 207.

[0072] Preferably, a limit block 5 and a limit seat 501 are provided, and a friction force is provided between the disc member 207 and the bevel gear disc 406. When the bevel gear disc 406 rotates, due to the existence of the friction force, the disc member 207 is driven to rotate synchronously, so that the limit block 5 contacts the limit seat 501 at the lower end (such as Fig.10As shown), at this time, the axis of the driving wheel 203 is parallel to the steel pipe body 6, and the disc member 207 is restricted and cannot continue to rotate. At this time, if the bevel gear plate 406 continues to rotate, when the driving force is greater than the existing friction force, the bevel gear plate 406 can rotate independently relative to the disc member 207, and the driving wheel 203 can be driven to rotate, and the steel pipe body 6 is driven to rotate and perform the alignment work;

[0073] Then, when the alignment is completed, the bevel gear plate 406 rotates in the opposite direction, and the disc member 207 is driven to rotate by the friction force. When the limit block 5 contacts the limit seat 501 on the side, the driving wheel 203 is perpendicular to the axis of the steel pipe body 6. Similarly, the bevel gear plate 406 rotates independently relative to the disc member 207, thereby driving the driving wheel 203 to rotate, and driving the steel pipe body 6 to move out to the next process (it is worth mentioning that, when the steel pipe body 6 is driven to rotate and move, the driving wheel 203 rotates in the opposite direction. Therefore, it is necessary to ensure that the driving wheel 203 is perpendicular to the axis of the steel pipe body 6). The driving direction of the steel pipe body 6 is to ensure that the steel pipe body 6 is transported toward the welding part 3), that is, only through the drive of the motor component 801, the rotation of the driving wheel 203 can be driven, and the axial direction of the driving wheel 203 can be controlled. It is highly practical and does not require additional driving components or control programs. Only the forward and reverse rotation of the motor component 801 is required to realize the switching of the angle of the driving wheel 203 after aligning the steel pipe body 6, and then drive the steel pipe body 6 to move. The process connection is smooth and cost-saving.

[0074] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, internal communication between two elements, or an interaction relationship between two elements. For ordinary technicians in this field, the meanings of the above terms in this application can be understood according to specific circumstances.

[0075] The above is a detailed introduction to an automatic welding device for a stainless steel pipe and a working method thereof provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. An automatic welding device for stainless steel pipes, comprising a conveyor belt (7), a blanking frame (1), an alignment part (2), a welding part (3) and a concave support table (4), Features: The conveyor belt (7) is used to continuously transport the steel pipe body (6) to be welded into the unloading frame (1); The upper end of the blanking frame (1) is provided with a conical funnel mouth, a plurality of steel pipe bodies (6) are stacked transversely in the blanking frame (1), and a pair of load-bearing arc plates (101) are fixedly connected to the lower ends of both ends of the blanking frame (1), and a ball bearing (102) is provided on the inner side of the load-bearing arc plate (101); The alignment part (2) comprises an alignment wheel (201), the outer edge thickness of the alignment wheel (201) is adapted to the weld of the steel pipe body (6), the alignment wheel (201) is arranged correspondingly at the lower end of the blanking frame (1), the lower end of the wheel frame of the alignment wheel (201) is provided with a spring telescopic rod (202), the lower end of the spring telescopic rod (202) is provided with a fixing box, the fixing box is fixed to the lower end of the concave support platform (4), and the wheel frame of the alignment wheel (201) penetrates the concave support platform (4) and is slidably matched therewith; The alignment portion (2) further comprises a plurality of driving wheels (203), the plurality of driving wheels (203) being symmetrically arranged on both sides of the concave support platform (4), a linear driving mechanism being arranged on one side of the driving wheel (203), the linear driving mechanism driving the driving wheel (203) to move and fit onto the surface of the steel pipe body (6), and when the axis of the driving wheel (203) is parallel to the axis of the steel pipe body (6), the driving wheel (203) drives the steel pipe body (6) to rotate along its axis; A plurality of extrusion wheels (401) are arranged on the inner side of the concave support platform (4), and a concave surface matching the steel pipe body (6) is arranged on the inner side of the extrusion wheel (401). A plurality of spring telescopic rods (402) are arranged between the extrusion wheel (401) and the concave support platform (4). The extrusion wheels (401) on both sides extrude and transport the steel pipe body (6). A plurality of driving concave wheels (9) are arranged on the central upper end of the concave support platform (4), and the driving concave wheels (9) are driven to rotate by a motor assembly and drive the steel pipe body (6) to be transported; The welding portion (3) comprises a bracket (301), the bracket (301) is fixed to the lower end of the concave support platform (4), and a welding gun (302) is arranged on the lower side of the bracket (301); A pair of flip baffles (103) are fixedly connected to both ends of the lower end of the blanking frame (1), and the flip baffles (103) extend to the lower end outlet of the blanking frame (1). The outer end of the flip baffle (103) is fixedly connected to a hinge seat (104), and both ends of the hinge seat (104) are rotatably connected to fixed blocks (105). The fixed blocks (105) are fixedly connected to the blanking frame (1), and a hinge rod (106) is rotatably connected between the fixed blocks (105). The hinge rod (106) passes through the hinge seat (104) and is fixedly connected thereto. A gear 1 (107) is fixedly connected to both ends of the hinge rod (106), and a double rack (108) is meshedly connected between the pair of gears 1 (107). The double rack (108) is slidably matched with the side wall of the blanking frame (1), and the double rack (108) is driven to move by a cylinder assembly (8); Four transverse grooves are formed through the lower side of the blanking frame (1), and an L-shaped baffle (109) is slidably fitted in the transverse groove. A plurality of spring telescopic rods (110) are provided at the upper end of the L-shaped baffle (109), and the spring telescopic rods (110) are connected to the blanking frame (1). The L-shaped baffle (109) extends into the blanking frame (1) and blocks the blanking of a plurality of steel pipe bodies (6). The spacing between the L-shaped baffle (109) and the flip baffle (103) is equal to the diameter of a single steel pipe body (6). A rack groove is formed at the lower end of the L-shaped baffle (109); an arc-shaped tooth (111) is fixedly connected to the outer side of the hinge seat (104); the arc-shaped tooth (111) and the rack groove are meshed with each other; when the flip baffle (103) is in a horizontal state, the L-shaped baffle (109) is away from the blanking frame (1); The linear drive mechanism comprises a moving frame (204), a plurality of guide telescopic rods (205) are arranged between the two ends of the moving frame (204) and the concave support platform (4), a pair of fixed plates (206) are fixedly connected to the middle side of the moving frame (204), a disc member (207) is rotatably connected to the inner side of the fixed plate (206), a pair of support rods (208) are fixedly connected to the inner side of the disc member (207), and the driving wheel (203) is rotatably connected between the pair of support rods (208); The lower end of the double rack (108) is hingedly connected to a pair of connecting rods (112), one end of the connecting rod (112) is hingedly connected to two ends of the moving frame (204), and when the flip baffle (103) is in a horizontal state, the connecting rod (112) is in an inclined state and the driving wheel (203) is in contact with the steel pipe body (6); A rotating rod is fixedly connected to the inner side of the driving wheel (203), one end of the rotating rod passes through the support rod (208) and is rotatably connected thereto, one end of the rotating rod is fixedly connected to gear 2 (403), one side of gear 2 (403) is meshingly connected to gear 3 (404), one end of gear 3 (404) is fixedly connected to a rotating shaft, the rotating shaft passes through the support rod (208) and the penetration end is fixedly connected to a bevel gear member (405), one end of the bevel gear member (405) is meshingly connected to a bevel gear disk (406), and the bevel gear disk (406) is rotatably connected to the disc member (207); One end of the bevel gear disc (406) is fixedly connected to a center rod (407), the center rod (407) penetrates through the disc member (207) and the fixed plate (206) and is rotatably connected thereto, one end of the center rod (407) is fixedly connected to a pulley member (408), the pulley member (408) is rotatably connected to the fixed plate (206), the pulley members (408) on both sides are connected via a transmission belt, the outer end of the pulley member (408) on either side is fixedly connected to a torque sleeve (409), a key slot is provided on the outer end of the torque sleeve (409), a torsion rod (410) is slidably fitted in the torque sleeve (409), the outer end of the torsion rod (410) is fixedly connected to a drive key (411), the drive key (411) is mutually engaged with the key slot, and the torsion rod (410) is driven to rotate by the motor member (801).

2. The automatic welding equipment for stainless steel pipe according to claim 1, Features: There is friction between the disc member (207) and the bevel gear plate (406); a pair of limit blocks (5) are fixedly connected to the outer end of the disc member (207); the pair of limit blocks (5) are symmetrically arranged; one end of the fixed plate (206) is fixedly connected to a pair of limit seats (501); the pair of limit seats (501) limit the rotation angle of the disc member (207).

3. The working method of the automatic welding equipment for stainless steel pipe according to claim 1, The following steps are involved: S1, transporting a plurality of steel pipe bodies (6) to be welded into a blanking frame (1) in sequence by means of a conveyor belt (7), then unloading the steel pipe bodies (6) into the blanking frame (1) and stacking them in sequence, and dropping them onto a pair of bearing arc plates (101) in sequence, and pressing down the lower end alignment wheel (201); S2, the alignment wheel (201) is in close contact with the lower end of the steel pipe body (6) and is adapted to the lower end by means of the spring telescopic rod 1 (202); S3, the alignment part (2) then drives the driving wheels (203) on both sides to move relative to each other and fit onto the two ends of the steel pipe body (6) by using a linear drive mechanism, and then drives the steel pipe body (6) to rotate by the rotation of the driving wheels (203) until the alignment wheel (201) is stuck in the weld of the steel pipe body (6); S4, the weld of the aligned steel pipe body (6) is axially displaced along the alignment wheel (201) to between the plurality of extrusion wheels (401), and the extrusion wheels (401) on both sides extrude and merge the weld of the steel pipe body (6) under the elastic force of the second spring telescopic rod (402), and the steel pipe body (6) is transmitted by driving the concave wheel (9); S5. The steel pipe body (6) passes through the welding portion (3), and its weld is welded by a welding gun (302).

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