An alignment welding device for stainless steel steel pipes

Abstract

The present invention discloses a stainless steel pipe alignment welding device, which belongs to the technical field of steel pipe welding, and comprises a main frame device, the main frame device is used to classify the stainless steel pipes according to their diameters, three branch devices are arranged beside the main frame device, and alignment devices are arranged on the branch devices, the branch devices are used to collect stainless steel pipes of different diameters, and send the stainless steel pipes into the alignment devices in pairs, and the alignment devices are used to align and weld the stainless steel pipes. The main frame device provided by the present invention can screen stainless steel pipes of different diameters, and realize the collection of stainless steel pipes of the same diameter; the branch devices can send the stainless steel pipes into the alignment devices in pairs, which is convenient for subsequent alignment welding; the alignment device can realize automatic alignment and automatic welding of stainless steel pipes, and during the welding process, the stainless steel pipe itself is driven to rotate by the toggle wheel to complete the welding of a whole circle of welds of the stainless steel pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of steel pipe welding, and particularly relates to an alignment welding device for stainless steel pipes. Background Art

[0002] Stainless steel pipes are a common type of pipe. Due to their unique corrosion resistance, stainless steel pipes are used in the transportation of liquids and gases. In actual applications, due to different required lengths, the steel pipes need to be cut and welded. Manual welding can be carried out in small batches. If a large number of steel pipes of multiple specifications need to be welded, manual welding is inefficient and uneconomical. Most of the alignment welding of stainless steel pipes for alignment welding is of the same specification. When performing alignment welding of stainless steel pipes, it is necessary to first screen the stainless steel pipes according to their different diameters. The existing steel pipe welding machines can only weld single steel pipes and need to place the steel pipes in alignment. At the same time, for the feeding of a large number of steel pipes, it is necessary to first classify the stainless steel pipes of the same specification and then perform welding. Summary of the Invention

[0003] In view of the above technical problems, the technical solution adopted by the present invention is: an alignment welding device for stainless steel pipes, including a main frame device. The main frame device includes a sorting box. The main frame device is used to classify stainless steel pipes according to their diameters. Three branch pipe devices are arranged beside the main frame device. The branch pipe device includes two side boxes. An alignment device is arranged on the branch pipe device. The alignment device includes a welding torch. The branch pipe devices are respectively used to collect stainless steel pipes of different diameter specifications and send the stainless steel pipes into the alignment device in pairs. The alignment device is used to align and weld the stainless steel pipes.

[0004] Further, the main frame device includes a feeding box fixedly installed on the sorting box. The sorting box is provided with a front discharge port, a middle discharge port, and a rear discharge port for distinguishing three types of stainless steel pipes with different diameters, and their widths gradually increase. A middle sliding slope, a front sliding slope, and a rear sliding slope are fixedly installed on the sorting box. The middle sliding slope is located below the middle discharge port, the front sliding slope is located below the front discharge port, and the rear sliding slope is located below the rear discharge port. A slope is provided on the front sliding slope, sloping towards the outlet end of the front sliding slope. A non-conforming sliding slope is fixedly installed on the sorting box. The upper surface of the sorting box has a slope, and the side of the sorting box close to the non-conforming sliding slope is lower than the side close to the feeding box.

[0005] Further, a jacking mechanism is arranged on the sorting box. The jacking mechanism includes a bottom electric cylinder fixedly installed at the bottom of the sorting box. A jacking block is fixedly installed at the top of the bottom electric cylinder. A slope is provided at the top of the jacking block. The jacking block is slidably installed with the rear discharge port, the middle discharge port, and the front discharge port respectively.

[0006] Further, a blocking mechanism is provided on the ejector block. The blocking mechanism includes a lower rotating block rotatably mounted on the ejector block, a sliding rod slidably mounted on the lower rotating block, an upper rotating block slidably mounted on the sliding rod, a baffle rotatably mounted on the upper rotating block, and the baffle is slidably mounted with the feed box.

[0007] Stainless steel steel pipes with the same length but different diameter specifications are placed into the feed box and blocked by the baffle. The bottom electric cylinder extends once to drive the ejector block to rise. The rising of the ejector block drives the lower rotating block to rotate. Through the sliding of the sliding rod relative to the lower rotating block and the upper rotating block, the baffle is driven to descend. As the baffle descends, the blocked stainless steel steel pipe enters the feed box, and each time one stainless steel steel pipe enters.

[0008] The stainless steel steel pipes that enter the distribution box move along the slope of the distribution box towards the direction of the unqualified sliding slope. If the diameter of the steel pipe is greater than the width of the front discharge port, it will stay on the front discharge port. If the diameter of the steel pipe is smaller than the front discharge port, it will fall into the front discharge port, and finally enter the front sliding slope, and finally fall from the outlet of the front sliding slope into the branch pipe device beside the front sliding slope. Each time the bottom electric cylinder extends, it will drive the ejector block to rise, and push out the steel pipes located in the front discharge port, middle discharge port, and rear discharge port. The steel pipes with a diameter greater than the width of the front discharge port and smaller than the width of the middle discharge port are pushed from the front discharge port and will fall into the middle discharge port, and fall into the middle sliding slope, and finally enter the branch pipe device beside the middle sliding slope. If the diameter of the steel pipe is greater than the width of the middle discharge port, the steel pipe will stay on the middle discharge port. When the ejector block rises next time, the steel pipe on the middle discharge port is pushed to the rear discharge port. If the diameter of the steel pipe is smaller than the width of the rear discharge port, the steel pipe passes through the rear discharge port and falls onto the rear sliding slope, and finally enters the branch pipe device beside the rear sliding slope. If the diameter of the steel pipe is greater than the width of the rear discharge port, the steel pipe will stay on the rear discharge port. When the ejector block rises next time, the steel pipe on the rear discharge port is pushed to the unqualified sliding slope and leaves the device.

[0009] Further, the branch pipe device includes fixed blocks fixedly installed on both sides of the box, switches fixedly installed on the sides of both sides of the box, a horizontal sliding rod slidably installed on the fixed blocks, a moving slope block fixedly installed on the horizontal sliding rod, and branch pipe boxes fixedly installed on both sides of the box.

[0010] Further, two sets of downward pressing mechanisms are provided on the fixed blocks. The downward pressing mechanisms include upper ejecting rods slidably installed on the fixed blocks, lower rotating rods rotatably installed on the upper ejecting rods, sliding sleeves slidably installed on the lower rotating rods, upper rotating rods slidably installed on the sliding sleeves, downward pressing rods rotatably installed on the upper rotating rods, lower pressing plates fixedly installed on the downward pressing rods, the lower pressing plates are slidably installed with both sides of the box, downward pressing springs are arranged between the downward pressing rods and both sides of the box, the lower pressing plates are provided with slopes, and the side of the lower pressing plate close to the branch pipe box is lower than the side far from the branch pipe box.

[0011] The stainless steel pipe on the lower pressure plate will slide into the branch box along the slope of the lower pressure plate, and then fall onto the two butt-jointed pipe supports. When the stainless steel pipe falls onto the butt-jointed pipe supports, the switch will control the push-out electric cylinder to extend. The stainless steel pipe on the lower pressure plate will slide into the branch box along the slope of the lower pressure plate, and then fall onto the two butt-jointed pipe supports. When the stainless steel pipe falls onto the butt-jointed pipe supports, the switch will control the push-out electric cylinder to extend.

[0012] Furthermore, the positioning device includes an ejection electric cylinder fixedly installed under the two side boxes, the welding gun is fixedly installed on the branch box, a ejection rack is fixedly installed on the top of the ejection electric cylinder, the ejection rack is slidably installed with the branch box, an outer rack and an inner rack are fixedly installed on the ejection rack, two inner rotating gears are rotatably installed on the two side boxes, a toggle wheel is fixedly installed on the inner rotating gear, a docking tube support is rotatably installed on the branch box, a rotating gear is fixedly installed on the docking tube support, and the rotating gear is meshed with the outer rack.

[0013] The push-out electric cylinder extends to drive the push-out frame to slide, thereby driving the outer rack and the inner rack to extend, and the outer rack drives the rotating gear and the docking tube support to rotate ninety degrees, thereby realizing the docking of the two stainless steel tubes on the docking tube support. At this time, the stainless steel tube reaches under the welding gun, and the two stainless steel tubes are welded by the welding gun. When the inner rack contacts the inner rotating gear, the docking tube support has rotated ninety degrees, and the outer rack is disengaged from the rotating gear. The inner rack continues to move forward to drive the inner rotating gear and the toggle wheel to rotate, and the two stainless steel tubes are driven to rotate by the toggle wheel, thereby realizing the welding of a full circle of welds on the two stainless steel tubes by the welding gun.

[0014] According to different processing requirements, more discharge ports can be set on the distribution box, and more discharge slopes can be set next to the discharge ports, and branch pipe devices and alignment devices can be set accordingly. Through multiple branch pipe devices and alignment devices, the alignment welding of stainless steel pipes of different diameters can be achieved.

[0015] Compared with the prior art, the present invention has the following advantages: (1) the main frame device provided in the present invention can screen stainless steel pipes of different diameters, and send the screened stainless steel pipes into corresponding branch pipe devices respectively, so as to realize the grouping of stainless steel pipes of the same diameter; (2) the branch pipe devices provided in the present invention can send the stainless steel pipes into the alignment device in pairs, and locate the positions of the stainless steel pipes at the same time, so as to facilitate the subsequent alignment welding; (3) the alignment device provided in the present invention can realize the automatic alignment and automatic welding of the stainless steel pipe, and during the welding process, the stainless steel pipe itself is driven to rotate by the toggle wheel to complete the welding of a whole circle of the stainless steel pipe weld. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 The main frame device structure of the present invention is shown in FIG. Figure 1 .

[0018] Figure 3 The main frame device structure of the present invention is shown in FIG. Figure 2 .

[0019] Figure 4 It is a schematic diagram of the ejection mechanism structure of the present invention.

[0020] Figure 5 The structure of the branching device of the present invention is shown in FIG. Figure 1 .

[0021] Figure 6 The structure of the branching device of the present invention is shown in FIG. Figure 2 .

[0022] Figure 7 It is a schematic diagram of the structure of the pressing mechanism of the present invention.

[0023] Figure 8 The structure of the alignment device of the present invention is shown in FIG. Figure 1 .

[0024] Figure 9 The structure of the alignment device of the present invention is shown in FIG. Figure 2 .

[0025] Figure 10 The structure of the alignment device of the present invention is shown in FIG. Figure 3 .

[0026] Reference numerals: 101- material distribution box; 102- material feeding box; 103- middle slide-out slope; 104- front slide-out slope; 105- rear slide-out slope; 106- unqualified slide-out slope; 107- front discharge port; 108- middle discharge port; 109- rear discharge port; 110- bottom electric cylinder; 111- ejector block; 112- lower rotating block; 113- slide rod; 114- upper rotating block; 115- baffle; 201- two side boxes; 202- switch; 203- distribution box; 204-fixed block; 205-cross slide bar; 206-movable slope block; 207-lower pressure plate; 208-lower pressure spring; 209-lower rotating rod; 210-sliding sleeve; 211-upper rotating rod; 212-lower pressure rod; 213-upper ejector rod; 301-welding gun; 302-ejection cylinder; 303-ejection frame; 304-external rack; 305-rotating gear; 306-butt tube support; 307-internal rack; 308-internal rotating gear; 309-moving wheel. DETAILED DESCRIPTION

[0027] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0028] Example: Reference Figures 1 - 10 A stainless steel pipe alignment welding device comprises a main frame device, the main frame device comprises a material distribution box 101, the main frame device is used to classify the stainless steel pipes according to their diameters, three branch devices are arranged beside the main frame device, the branch devices comprise two side boxes 201, an alignment device is arranged on the branch devices, the alignment device comprises a welding gun 301, the branch devices are used to collect stainless steel pipes of different diameters, and feed the stainless steel pipes into the alignment device in pairs, the alignment device is used to align and weld the stainless steel pipes.

[0029] like Figures 2 - 4 As shown, the main frame device includes a feed box 102 fixedly mounted on the distribution box 101, and the distribution box 101 is provided with a front discharge port 107, a middle discharge port 108 and a rear discharge port 109 for distinguishing three stainless steel pipes of different diameters, whose widths increase successively, and a middle slide-out slope 103, a front slide-out slope 104 and a rear slide-out slope 105 are fixedly mounted on the distribution box 101, the middle slide-out slope 103 is located below the middle discharge port 108, the front slide-out slope 104 is located below the front discharge port 107, and the rear slide-out slope 105 is located below the rear discharge port 109, and a slope is provided on the front slide-out slope 104, which slopes toward the outlet end of the front slide-out slope 104, and an unqualified slide-out slope 106 is fixedly mounted on the distribution box 101, and a slope is provided on the upper surface of the distribution box 101, and the side of the distribution box 101 close to the unqualified slide-out slope 106 is lower than the side close to the feed box 102.

[0030] like Figures 2 - 4As shown in the figure, an ejection mechanism is provided on the material distribution box 101. The ejection mechanism includes a bottom electric cylinder 110 fixedly installed at the bottom of the material distribution box 101. A top block 111 is fixedly installed at the top of the bottom electric cylinder 110. A slope is provided at the top of the top block 111. The top block 111 is slidably installed with the rear discharge port 109, the middle discharge port 108, and the front discharge port 107 respectively.

[0031] As Figures 2 - 4 shown, a blocking mechanism is provided on the top block 111. The blocking mechanism includes a lower rotating block 112 rotatably installed on the top block 111. A sliding rod 113 is slidably installed on the lower rotating block 112. An upper rotating block 114 is slidably installed on the sliding rod 113. A baffle 115 is rotatably installed on the upper rotating block 114. The baffle 115 is slidably installed with the feed box 102.

[0032] Stainless steel steel pipes of the same length but different diameter specifications are placed into the feed box 102 and blocked by the baffle 115. The bottom electric cylinder 110 extends once to drive the top block 111 to rise. The rising of the top block 111 drives the lower rotating block 112 to rotate. Through the sliding of the sliding rod 113 with respect to the lower rotating block 112 and the upper rotating block 114, the baffle 115 is driven to descend. As the baffle 115 descends, the blocked stainless steel steel pipe enters the feed box 102, and one stainless steel steel pipe enters each time.

[0033] The stainless steel steel pipes that enter the material distribution box 101 move along the slope of the material distribution box 101 in the direction of the unqualified sliding slope 106. If the diameter of the steel pipe is greater than the width of the front discharge port 107, it will stay on the front discharge port 107. If the diameter of the steel pipe is less than the front discharge port 107, it will fall into the front discharge port 107, and finally enter the front sliding slope 104 and finally fall from the outlet of the front sliding slope 104 into the branch pipe device beside the front sliding slope 104. Each time the bottom electric cylinder 110 extends, it will drive the top block 111 to rise, and the steel pipes located in the front discharge port 107, the middle discharge port 108, and the rear discharge port 109 will be ejected. The steel pipes with a diameter greater than the width of the front discharge port 107 and less than the width of the middle discharge port 108 will be pushed from the front discharge port 107 and fall into the middle discharge port 108, and then fall into the middle sliding slope 103 and finally enter the branch pipe device beside the middle sliding slope 103. If the diameter of the steel pipe is greater than the width of the middle discharge port 108, the steel pipe will stay on the middle discharge port 108. When the top block 111 rises next time, the steel pipe on the middle discharge port 108 will be pushed to the rear discharge port 109. If the diameter of the steel pipe is less than the width of the rear discharge port 109, the steel pipe will pass through the rear discharge port 109 and fall onto the rear sliding slope 105 and finally enter the branch pipe device beside the rear sliding slope 105. If the diameter of the steel pipe is greater than the width of the rear discharge port 109, the steel pipe will stay on the rear discharge port 109. When the top block 111 rises next time, the steel pipe on the rear discharge port 109 will be pushed onto the unqualified sliding slope 106 and leave the device.

[0034] AsFigures 5 - 7 As shown, the branch pipe device includes fixed blocks 204 fixedly installed on both side boxes 201. A switch 202 is fixedly installed on the side of both side boxes 201. A horizontal sliding rod 205 is slidably installed on the fixed block 204. A moving slope block 206 is fixedly installed on the horizontal sliding rod 205. A branch pipe box 203 is fixedly installed on both side boxes 201.

[0035] As Figures 5 - 7 As shown, two groups of pressing mechanisms are arranged on the fixed block 204. The pressing mechanism includes an upper ejecting rod 213 slidably installed on the fixed block 204. A lower rotating rod 209 is rotatably installed on the upper ejecting rod 213. A sliding sleeve 210 is slidably installed on the lower rotating rod 209. An upper rotating rod 211 is slidably installed on the sliding sleeve 210. A pressing rod 212 is rotatably installed on the upper rotating rod 211. A lower pressing plate 207 is fixedly installed on the pressing rod 212. The lower pressing plate 207 is slidably installed with the both side boxes 201. A pressing spring 208 is arranged between the pressing rod 212 and the both side boxes 201. A slope is arranged on the lower pressing plate 207. The side of the lower pressing plate 207 close to the branch pipe box 203 is lower than the side far from the branch pipe box 203.

[0036] In the initial state, the moving slope block 206 presses down the switch 202. When the stainless steel pipe falls on the moving slope block 206, the stainless steel pipe reaches the lower pressing plate 207 on the side far from the switch 202 along the moving slope block 206. The lower pressing plate 207 is pressed down, driving the pressing rod 212 to descend. The pressing spring 208 is compressed. The descending of the pressing rod 212 drives the upper rotating rod 211 to rotate. Through the sliding sleeve 210 and the lower rotating rod 209, the right upper ejecting rod 213 is driven to rise along the fixed block 204. Thus, the moving slope block 206 and the horizontal sliding rod 205 are driven to slide rightward along the fixed block 204 through the upper ejecting rod 213. The moving slope block 206 is separated from the switch 202. At the same time, the stainless steel pipe on the lower pressing plate 207 slides into the branch pipe box 203 along the slope of the lower pressing plate 207. The next stainless steel pipe of the same size will fall on the lower pressing plate 207 on the side close to the switch 202 along the moving slope block 206. Similarly, the upper ejecting rod 213 on the left side of the fixed block 204 is driven to rise, pushing the horizontal sliding rod 205 and the moving slope block 206 to slide leftward along the fixed block 204. The moving slope block 206 contacts the switch 202 again. After a short delay, the switch 202 controls the extending of the pushing cylinder 302. The stainless steel pipe on the lower pressing plate 207 will slide into the branch pipe box 203 along the slope of the lower pressing plate 207 and then fall on the two docking pipe supports 306. When the stainless steel pipe falls on the docking pipe supports 306, the switch 202 will control the extending of the pushing cylinder 302.

[0037] As Figures 8 - 10As shown, the alignment device includes an ejection electric cylinder 302 fixedly installed below the two side boxes 201, the welding gun 301 is fixedly installed on the branch box 203, a ejection frame 303 is fixedly installed on the top of the ejection electric cylinder 302, the ejection frame 303 is slidably installed with the branch box 203, an outer rack 304 and an inner rack 307 are fixedly installed on the ejection frame 303, two inner rotating gears 308 are rotatably installed on the two side boxes 201, a toggle wheel 309 is fixedly installed on the inner rotating gear 308, a docking tube bracket 306 is rotatably installed on the branch box 203, a rotating gear 305 is fixedly installed on the docking tube bracket 306, and the rotating gear 305 is meshed with the outer rack 304.

[0038] The push-out electric cylinder 302 extends to drive the push-out frame 303 to slide, thereby driving the outer rack 304 and the inner rack 307 to extend, and the outer rack 304 drives the rotating gear 305 and the docking tube holder 306 to rotate ninety degrees, so as to achieve the docking of the two stainless steel pipes on the docking tube holder 306. At this time, the stainless steel pipe arrives under the welding gun 301, and the two stainless steel pipes are welded by the welding gun 301. When the inner rack 307 contacts the inner rotating gear 308, the docking tube holder 306 has rotated ninety degrees, and the outer rack 304 is disengaged from the rotating gear 305. The inner rack 307 continues to move forward to drive the inner rotating gear 308 and the toggle wheel 309 to rotate, and the two stainless steel pipes are driven to rotate by the toggle wheel 309, so as to achieve the welding of a full circle of welds on the two stainless steel pipes by the welding gun 301.

[0039] According to different processing requirements, more discharge ports can be set on the distribution box 101, and more discharge slopes can be set next to the discharge ports, and branch pipe devices and alignment devices can be set accordingly. Through multiple branch pipe devices and alignment devices, alignment welding of stainless steel pipes of different diameters can be achieved.

[0040] The working principle of a butt welding device for stainless steel pipes disclosed by the present invention is as follows: The stainless steel pipes entering the material distribution box 101 move along the slope of the material distribution box 101 in the direction of the unqualified sliding slope 106. If the diameter of the pipe is greater than the width of the front discharge port 107, it will stay on the front discharge port 107. If the diameter of the pipe is less than that of the front discharge port 107, it will fall into the front discharge port 107, and finally enter the front sliding slope 104, and finally fall into the branch pipe device beside the front sliding slope 104 from the outlet of the front sliding slope 104. Each time the bottom electric cylinder 110 extends, it will drive the ejector block 111 to rise, and push out the pipes located in the front discharge port 107, the middle discharge port 108, and the rear discharge port 109. The pipes with a diameter greater than the width of the front discharge port 107 and less than the width of the middle discharge port 108 will be pushed from the front discharge port 107 and fall into the middle discharge port 108, then into the middle sliding slope 103, and finally enter the branch pipe device beside the middle sliding slope 103. If the diameter of the pipe is greater than the width of the middle discharge port 108, the pipe will stay on the middle discharge port 108. When the ejector block 111 rises next time, the pipe on the middle discharge port 108 will be pushed to the rear discharge port 109. If the diameter of the pipe is less than the width of the rear discharge port 109, the pipe will pass through the rear discharge port 109 and fall onto the rear sliding slope 105, and finally enter the branch pipe device beside the rear sliding slope 105. If the diameter of the pipe is greater than the width of the rear discharge port 109, the pipe will stay on the rear discharge port 109. When the ejector block 111 rises next time, the pipe on the rear discharge port 109 will be pushed onto the unqualified sliding slope 106 and leave the device. In the initial state, the moving slope block 206 presses down the switch 202. When the stainless steel pipe falls onto the moving slope block 206, the stainless steel pipe moves along the moving slope block 206 to the lower pressing plate 207 on the side far from the switch 202. The lower pressing plate 207 is pressed down, driving the lower pressing rod 212 to descend. The lower pressing spring 208 is compressed. The descent of the lower pressing rod 212 drives the upper rotating rod 211 to rotate. Through the sliding sleeve 210 and the lower rotating rod 209, the right upper ejecting rod 213 is driven to rise along the fixed block 204. Thus, through the upper ejecting rod 213, the moving slope block 206 and the horizontal sliding rod 205 are driven to slide to the right along the fixed block 204. The moving slope block 206 is separated from the switch 202. At the same time, the stainless steel pipe on the lower pressing plate 207 slides into the branch pipe box 203 along the slope of the lower pressing plate 207. The next stainless steel pipe of the same size will fall onto the lower pressing plate 207 near the switch 202 along the moving slope block 206. Similarly, the upper ejecting rod 213 on the left side of the fixed block 204 is driven to rise, pushing the horizontal sliding rod 205 and the moving slope block 206 to slide to the left along the fixed block 204. The moving slope block 206 contacts the switch 202 again. After a short delay, the switch 202 controls the pushing electric cylinder 302 to extend. The stainless steel pipe on the lower pressing plate 207 will slide into the branch pipe box 203 along the slope of the lower pressing plate 207, and then fall onto the two docking pipe supports 306. Only after the stainless steel pipe falls onto the docking pipe supports 306 will the switch 202 control the pushing electric cylinder 302 to extend.The push-out electric cylinder 302 extends to drive the push-out frame 303 to slide, thereby driving the outer rack 304 and the inner rack 307 to extend, and the outer rack 304 drives the rotating gear 305 and the docking tube holder 306 to rotate ninety degrees, so as to achieve the docking of the two stainless steel pipes on the docking tube holder 306. At this time, the stainless steel pipe arrives under the welding gun 301, and the two stainless steel pipes are welded by the welding gun 301. When the inner rack 307 contacts the inner rotating gear 308, the docking tube holder 306 has rotated ninety degrees, and the outer rack 304 is disengaged from the rotating gear 305. The inner rack 307 continues to move forward to drive the inner rotating gear 308 and the toggle wheel 309 to rotate, and the two stainless steel pipes are driven to rotate by the toggle wheel 309, so as to achieve the welding of a full circle of welds on the two stainless steel pipes by the welding gun 301.

[0041] According to different processing requirements, more discharge ports can be set on the distribution box 101, and more discharge slopes can be set next to the discharge ports, and branch pipe devices and alignment devices can be set accordingly. Through multiple branch pipe devices and alignment devices, alignment welding of stainless steel pipes of different diameters can be achieved.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A stainless steel pipe butt welding device, comprising a main frame device, characterized in that: The main frame device comprises a material distribution box (101), the main frame device is used to classify the stainless steel pipes according to their diameters, three branching devices are arranged beside the main frame device, the branching devices comprise two side boxes (201), an alignment device is arranged on the branching devices, the alignment device comprises a welding gun (301), the branching devices are used to collect stainless steel pipes of different diameters, and send the stainless steel pipes into the alignment device in pairs, and the alignment device is used to align and weld the stainless steel pipes; The branching device comprises a fixed block (204) fixedly mounted on the two side boxes (201), switches (202) fixedly mounted on the sides of the two side boxes (201), a horizontal sliding rod (205) slidably mounted on the fixed block (204), a movable slope block (206) fixedly mounted on the horizontal sliding rod (205), and a branching box (203) fixedly mounted on the two side boxes (201); Two groups of downward pressing mechanisms are arranged on the fixed block (204), and the downward pressing mechanism comprises an upper push rod (213) slidably mounted on the fixed block (204), a lower rotating rod (209) rotatably mounted on the upper push rod (213), a sliding sleeve (210) slidably mounted on the lower rotating rod (209), an upper rotating rod (211) slidably mounted on the sliding sleeve (210), a downward pressing rod (212) rotatably mounted on the upper rotating rod (211), a downward pressing plate (207) fixedly mounted on the downward pressing plate (212), the downward pressing plate (207) and the two side boxes (201) are slidably mounted, a downward pressing spring (208) is arranged between the downward pressing rod (212) and the two side boxes (201), a slope is arranged on the downward pressing plate (207), and a side of the downward pressing plate (207) close to the branch box (203) is lower than a side away from the branch box (203); The alignment device comprises an ejection electric cylinder (302) fixedly mounted below the two side boxes (201); the welding gun (301) is fixedly mounted on the branch box (203); an ejection frame (303) is fixedly mounted on the top of the ejection electric cylinder (302); the ejection frame (303) is slidably mounted on the branch box (203); an outer rack (304) and an inner rack (307) are fixedly mounted on the ejection frame (303); two inner gears (308) are rotatably mounted on the two side boxes (201); a toggle wheel (309) is fixedly mounted on the inner gear (308); a butt-joint tube bracket (306) is rotatably mounted on the branch box (203); a rotating gear (305) is fixedly mounted on the butt-joint tube bracket (306); the rotating gear (305) is meshed with the outer rack (304).

2. The device for welding stainless steel pipe according to claim 1, characterized in that: The main frame device comprises a feed box (102) fixedly mounted on a distribution box (101); a front discharge port (107), a middle discharge port (108) and a rear discharge port (109) are arranged on the distribution box (101) for distinguishing three stainless steel pipes of different diameters, the widths of which increase in sequence; a middle slide-out slope (103), a front slide-out slope (104) and a rear slide-out slope (105) are fixedly mounted on the distribution box (101); the middle slide-out slope (103) is located at the middle discharge port (108) The front slide-out slope (104) is located below the front discharge port (107), the rear slide-out slope (105) is located below the rear discharge port (109), a slope is provided on the front slide-out slope (104), and the slope faces the outlet end of the front slide-out slope (104). A non-conforming slide-out slope (106) is fixedly installed on the distribution box (101), and a slope is provided on the upper surface of the distribution box (101), and a side of the distribution box (101) close to the non-conforming slide-out slope (106) is lower than a side close to the feed box (102).

3. The device for welding stainless steel pipe according to claim 2, characterized in that: The material distribution box (101) is provided with an ejection mechanism, the ejection mechanism comprising a bottom electric cylinder (110) fixedly mounted on the bottom of the material distribution box (101), an ejection block (111) fixedly mounted on the top of the bottom electric cylinder (110), a slope being provided on the top of the ejection block (111), and the ejection block (111) being slidably mounted on the rear discharge port (109), the middle discharge port (108) and the front discharge port (107) respectively.

4. The device for welding stainless steel pipe according to claim 3, characterized in that: The ejection block (111) is provided with a blocking mechanism, the blocking mechanism comprising a lower rotating block (112) rotatably mounted on the ejection block (111), a slide rod (113) slidably mounted on the lower rotating block (112), an upper rotating block (114) slidably mounted on the slide rod (113), a baffle (115) rotatably mounted on the upper rotating block (114), and the baffle (115) is slidably mounted on the feed box (102).

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