A combined welding equipment for plastic coated composite steel pipe with double-seal flange connection

Abstract

The application discloses a kind of combined welding equipment of double-seal flange connection plastic coated composite steel pipe, belong to double-seal flange connection plastic coated composite steel pipe manufacturing technical field;It includes clamping assembly and welding assembly, the welding assembly includes support frame, the support frame is fixedly connected with mechanical arm, the mechanical arm output end is fixedly connected with fixed box, the fixed box is slidably installed with wire feeding assembly, the fixed box is installed with protection assembly, the protection assembly includes control motor fixedly installed in fixed box.The application can be welded in the process, steel pipe is fixed on clamping assembly, welding assembly is started, welding operation is started, in the process of welding, protection plate is in vertical state, can effectively prevent the possibility of spark flying everywhere, reduce the damage to steel pipe coating part, and make steel pipe welding area outside always keep good clean state, provide convenience for subsequent processing.

Description

Technical Field

[0001] This invention relates to the field of manufacturing technology for plastic-coated composite steel pipes with double-sealed flange connections, and particularly to a combined welding equipment for plastic-coated composite steel pipes with double-sealed flange connections. Background Technology

[0002] Double-sealed flange-connected plastic-coated composite steel pipe is a type of pipe that is specially reinforced for connection sealing based on ordinary plastic-coated composite steel pipe. It combines the strength of steel and the corrosion resistance of plastic, and further improves the reliability of the pipeline through a unique flange connection design. In the manufacturing process of double-sealed flange-connected plastic-coated composite steel pipe, welding (electric arc welding or plasma arc welding) is required to complete the connection between steel pipes and between steel pipes and flanges. The steel pipe is fixed on the welding equipment and the welding operation can be started.

[0003] However, in the actual welding process, firstly, although welding generally occurs before the coating operation, the sparks generated during welding fly everywhere, especially when they fly outside the welding area of ​​the steel pipe. This requires manual cleaning, which is time-consuming, labor-intensive, and very troublesome. Furthermore, after each welding operation, a large protrusion will form at the end of the welding rod. If it is not cleaned in time, it will seriously affect subsequent welding operations, and may even cause "arc burst" or arc failure. Moreover, after each welding operation, the welding quality of the steel pipe surface needs to be checked manually, which has poor inspection results. Therefore, a combined welding equipment for double-sealed flange connection of plastic-coated composite steel pipe is provided. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and to propose a combined welding equipment for plastic-coated composite steel pipes with double-sealed flange connection.

[0005] The present invention adopts the following technical solution:

[0006] A combined welding device for double-sealed flange-connected plastic-coated composite steel pipes includes a clamping assembly and a welding assembly. The welding assembly includes a support frame, a robotic arm fixedly connected to the support frame, a fixed box fixedly connected to the output end of the robotic arm, a wire feeding assembly slidably mounted in the fixed box, and a protective assembly installed inside the fixed box. The protective assembly includes a control motor fixedly mounted inside the fixed box, a gear fixedly connected to the output end of the control motor, and two racks slidably connected to the fixed box, both racks meshing with the gear. One rack is fixedly connected to a second connecting rod, the second connecting rod is fixedly connected to a processing head, the processing head is fixedly connected to the wire feeding assembly, and a fixed frame is fixedly connected to the processing head. Two moving rods are slidably connected through the fixed frame, and a protective plate is sleeved on the moving rods. A first connecting rod is fixedly connected to the side wall of the other rack, and the first connecting rod is drivenly connected to the protective plate through the connecting assembly.

[0007] Preferably, the connecting assembly includes a telescopic connecting rod rotatably mounted on the side wall of the protective plate, a moving head fixedly connected to the telescopic connecting rod, a third connecting plate fixedly connected to the first connecting rod, a fixed block fixedly connected to the third connecting plate, a sliding connection between the moving head and the fixed block, and a first spring fixedly connected between the moving head and the fixed block.

[0008] Preferably, the fixed block is rotatably connected to a threaded rod, the threaded rod is threadedly sleeved with a second fixed plate, the second fixed plate is fixedly connected to the fixed box, an elliptical plate is fixedly connected to the lower side of the threaded rod, a first connecting plate is fixedly connected to the lower side of the moving head, a second connecting plate is fixedly connected to the side wall of the first connecting plate, and the second connecting plate and the elliptical plate abut against each other.

[0009] Preferably, two baffles are fixedly connected to the outer sides of each of the two moving rods, and the protective plate is located between the two baffles and abuts against them. A first fixed plate is fixedly connected to the side wall of the fixed box. A telescopic rotating rod is rotatably connected to the lower side of the first fixed plate. The telescopic rotating rod is driven by a pulley assembly and a threaded rod. A circular plate is fixedly connected to the lower side of the telescopic rotating rod. A third connecting rod is fixedly connected to the lower side of the circular plate. A fourth connecting plate is rotatably connected to the lower side of the third connecting rod. A sixth connecting plate is rotatably connected to the lower side of the fourth connecting plate. A fifth connecting plate is fixedly connected to the outer sides of both moving rods. The fifth connecting plate and the sixth connecting plate are fixedly connected, and the sixth connecting plate is slidably connected to the fixed frame.

[0010] Preferably, the support frame and the outer side of the robotic arm are jointly fixedly connected with multiple triangular stabilizing bars.

[0011] Preferably, the fixing block has deep grooves on both sides, and a sliding rod is slidably connected in the deep groove, and the sliding rod is fixedly connected to the moving head.

[0012] Preferably, a control plate is slidably connected to the outer side of the protective plate, and multiple buffer springs are fixedly connected between the control plate and the protective plate.

[0013] The beneficial effects of this invention are:

[0014] 1. First, during the welding process, fix the steel pipe on the clamping assembly, start the welding assembly, and begin the welding operation. During the welding process, the protective plate is in a vertical position, which can effectively prevent the possibility of sparks flying everywhere, reduce damage to the plastic-coated part of the steel pipe, and keep the outside of the steel pipe welding area in a good clean state, which facilitates subsequent processing.

[0015] 2. Secondly, after welding is completed, the control plate and the welding rod come into contact, which will create a squeezing effect on the welding rod, damaging the welding rod, especially the protrusion formed at the end of the welding rod, so as to keep the welding rod in good working condition;

[0016] 3. Furthermore, after welding is completed, the control plate and the welding rod come into contact, which will create a squeezing effect on the steel pipe. Then, observe whether the surface of the steel pipe changes, that is, whether there is any damage. This completes a simple inspection of the welding quality. The overall structure is simple and has multiple functions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a combined welding equipment for a double-sealed flange connection plastic-coated composite steel pipe proposed in this invention;

[0018] Figure 2 This is a schematic diagram of the clamping component in a combined welding equipment for a double-sealed flange connection plastic-coated composite steel pipe proposed in this invention;

[0019] Figure 3 This is a schematic diagram of the slide plate and clamping plate in a combined welding equipment for double-sealed flange connection of plastic-coated composite steel pipes proposed in this invention;

[0020] Figure 4 This is a schematic diagram of the welding components in a combined welding equipment for a double-sealed flange connection plastic-coated composite steel pipe proposed in this invention;

[0021] Figure 5 This is a schematic diagram of the control box in a combined welding equipment for double-sealed flange-connected plastic-coated composite steel pipes proposed in this invention;

[0022] Figure 6 This is a schematic diagram of the connection between gears and racks in a combined welding equipment for double-sealed flange-connected plastic-coated composite steel pipes proposed in this invention.

[0023] Figure 7 for Figure 6 Enlarged view of the structure at point A in the middle;

[0024] Figure 8 This is a schematic diagram showing the connection between the processing head and the fixing frame in a combined welding equipment for a double-sealed flange connection of plastic-coated composite steel pipes proposed in this invention.

[0025] Figure 9 This diagram illustrates the movement of the protective plate and the moving rod in a combined welding device for a double-sealed flange connection of a plastic-coated composite steel pipe, as proposed in this invention.

[0026] In the diagram: 1 Clamping assembly, 101 Support platform, 102 Disc, 103 Slide groove, 104 Guide rail, 105 Support trolley, 106 Support hydraulic cylinder, 107 Support frame, 108 Support shaft, 109 Support roller, 110 Slide plate, 111 Clamping plate, 2 Welding assembly, 201 Support frame, 202 Robotic arm, 203 Fixing box, 204 Processing head, 205 Wire feeding assembly, 206 Control motor, 207 Gear, 208 Rack, 209 First connecting rod, 210 Moving head, 211 Protective plate, 212 Fixing Frame, 213 Moving rod, 214 Baffle, 215 Second connecting rod, 216 First fixing plate, 217 Telescopic rotating rod, 218 Circular plate, 219 Pulley assembly, 220 Second fixing plate, 221 Threaded rod, 222 Fixing block, 223 First spring, 224 First connecting plate, 225 Elliptical plate, 226 Second connecting plate, 227 Control plate, 228 Telescopic connecting rod, 229 Third connecting plate, 230 Third connecting rod, 231 Fourth connecting plate, 232 Fifth connecting plate, 233 Sixth connecting plate. Detailed Implementation

[0027] See Figures 1-9 A combined welding equipment for double-sealed flange connection of plastic-coated composite steel pipe includes a clamping assembly 1 and a welding assembly 2;

[0028] First, the clamping assembly 1 includes a support platform 101. Two guide rails 104 are fixedly connected to the side wall of the support platform 101. A disc 102 is rotatably connected to the support platform 101. Multiple sliding grooves 103 are evenly opened around the side wall of the disc 102. A slide plate 110 is slidably connected in each sliding groove 103. A clamping hydraulic cylinder is fixedly connected in the side wall of each sliding groove 103. The output end of the clamping hydraulic cylinder is fixedly connected to the slide plate 110. A clamping plate 111 is fixedly connected to the outside of the slide plate 110. Multiple support trolleys 105 are slidably connected to the upper side of the two guide rails 104. A support hydraulic cylinder 106 is fixedly connected to the upper side of each support trolley 105. A support frame 107 is fixedly connected to the upper side of the support hydraulic cylinder 106. Two support shafts 108 are rotatably installed in the support frame 107. Support rollers 109 are fixedly connected to the outside of the two support shafts 108.

[0029] When welding operations are required on the steel pipe, the heavier steel pipe is placed between multiple clamping plates 111. At the same time, multiple clamping hydraulic cylinders are activated, and the sliding plate 110 drives the clamping plates 111 to move closer to the steel pipe until all the clamping plates 111 are in contact with the steel pipe, thus completing the initial clamping and fixing operation of the steel pipe. Then, according to the actual work needs, an appropriate number of support trolleys 105 are selected, and the support trolleys 105 are placed on the guide rail 104 and moved along the guide rail 104 to the lower side of the steel pipe. The support hydraulic cylinder 106 is activated, and the support hydraulic cylinder 106 drives the support frame 107, support shaft 108, and support roller 109 to move upward until both support rollers 109 are in contact with the steel pipe, thus completing the clamping and fixing operation of the steel pipe. The disc 102 is then rotated to start the welding operation.

[0030] Welding assembly 2 includes a support frame 201, a robotic arm 202 is fixedly connected to the support frame 201, a fixed box 203 is fixedly connected to the output end of the robotic arm 202, and a wire feeding assembly 205 is slidably mounted on the fixed box 203.

[0031] A protective assembly is installed inside the fixed housing 203. The protective assembly includes a control motor 206 fixedly installed inside the fixed housing 203. A gear 207 is fixedly connected to the output end of the control motor 206. Two racks 208 are slidably connected to the fixed housing 203, and both racks 208 mesh with the gear 207. One rack 208 is fixedly connected to a second connecting rod 215, which is fixedly connected to a processing head 204. The processing head 204 is fixedly connected to a wire feeding assembly 205. A fixed frame 212 is fixedly connected to the processing head 204. Two moving rods 213 are slidably connected through the fixed frame 212, and a protective plate 211 is sleeved on each moving rod 213. A first connecting rod 209 is fixedly connected to the side wall of the other rack 208. The first connecting rod 209 is connected to the protective plate 211 via a connecting assembly.

[0032] The connecting assembly includes a telescopic connecting rod 228 rotatably mounted on the side wall of the protective plate 211. The telescopic connecting rod 228 is fixedly connected to a moving head 210. A first connecting rod 209 is fixedly connected to a third connecting plate 229. A fixing block 222 is fixedly connected to the third connecting plate 229. The moving head 210 and the fixing block 222 are slidably connected, and a first spring 223 is fixedly connected between the moving head 210 and the fixing block 222. A control plate 227 is slidably connected to the outside of the protective plate 211. Multiple buffer springs are fixedly connected between the control plate 227 and the protective plate 211. Deep grooves are opened on both sides of the fixing block 222. A sliding rod is slidably connected in the deep groove. The sliding rod is fixedly connected to the moving head 210.

[0033] The wire feeding assembly 205 is used to feed the welding rod to the area to be welded. The wire feeding assembly 205 includes a wire feeding motor, a wire feeding wheel, and a wire feeding tube. The wire feeding motor is located outside the processing head 204 and is fixedly connected to the processing head 204. The wire feeding wheel is fixedly connected to the output shaft of the wire feeding motor. The wire feeding tube is fixedly connected to the processing head 204. The welding rod to be used is inserted into the wire feeding tube. The wire feeding motor is started. The wire feeding motor drives the wire feeding wheel to rotate, which in turn drives the welding rod to move along the direction of the wire feeding tube, and feeds the end of the welding rod to the arc area.

[0034] Secondly, a welding power source is fixedly connected to the outside of the support frame 201. The welding power source is an inverter power source that can provide precise and stable dynamic characteristics. A protective gas supply system, including a gas cylinder, pressure reducer, flow meter and gas delivery hose, is also fixedly installed on the outside of the support frame 201 to provide protective gas and isolate the electric arc and molten pool from the air.

[0035] After the welding electrode is installed in the wire feeding assembly 205, the welding electrode is electrically connected to the welding current through the wire. When welding operation is required, the welding power is turned on, the welding electrode and the workpiece come into contact, the arc is started, the welding electrode and the steel pipe form a molten pool, the steel pipe is rotated, the molten pool cools and solidifies, and finally a shaped weld is obtained.

[0036] At the start of welding, the gap between the welding rod and the steel pipe is too large. At this point, the control motor 206 is activated, which drives the gear 207 to rotate. The gear 207 then drives the two racks 208 to move. Figure 6 From the perspective of the gear 207, the gear 207 rotates clockwise, the left rack 208 moves upward, the right rack 208 moves downward, the right rack 208 drives the fixedly connected second connecting rod 215 to move downward, the second connecting rod 215 drives the processing head 204 to move downward, the processing head 204 drives the wire feeding assembly 205 and the welding rod to move downward together until the distance between the welding rod and the steel pipe meets the working requirements. At this time, the control motor 206 is turned off, and the welding operation can be started.

[0037] During the aforementioned process, the processing head 204 moves downwards. At this time, under the action of the gear 207 and rack 208, the first connecting rod 209 moves upwards. The first connecting rod 209 then moves the third connecting plate 229 upwards, which in turn moves the fixing block 222 upwards. The fixing block 222 then moves the moving head 210 upwards. The moving head 210, through the telescopic connecting rod 228, moves the protective plate 211. Figure 9In the process of moving from the state shown in the first picture to the state shown in the second picture, the protective plate 211 is more vertical. At this time, it is in the welding state. During the welding process, a lot of sparks will be generated. Placing it under the obstruction of the protective plate 211 can reduce the possibility of sparks flying everywhere, reduce damage to the plastic-coated part of the steel pipe, and keep the outside of the welding area of ​​the steel pipe in a good clean state, which facilitates subsequent processing.

[0038] Furthermore, after processing is completed, the control motor 206 is started, which drives the gear 207 to rotate. The gear 207 then drives the rack 208 to move, so as to... Figure 6 From this perspective, at this moment, gear 207 rotates counterclockwise, the rack 208 on the right drives the second connecting rod 215 to move upward, the second connecting rod 215 drives the processing head 204 to move upward, widening the gap between the welding rod and the steel pipe. At the same time, rack 208 on the left drives the first connecting rod 209 to move downward, the first connecting rod 209 drives the third connecting plate 229 to move downward, the third connecting plate 229 drives the fixing block 222 to move downward, the fixing block 222 drives the moving head 210 to move downward, and the moving head 210 drives the protective plate 211 to move through the telescopic connecting rod 228.

[0039] That is, in Figure 9 The device moves from the state shown in the second image to the state shown in the fifth image. During this process, when it reaches the state shown in the fourth image, the control plate 227 and the welding rod come into contact. This contact creates a squeezing effect on the welding rod, damaging the welding rod, especially the protrusion formed at the end of the welding rod. The protrusion is formed because after the welding rod is used, a "slag sleeve" composed of solidified metal and flux forms at the end. This is removed to keep the welding rod in good working condition. When the device continues to move, that is, when it reaches the fifth image, the distance between the control plate 227 and the steel pipe is the smallest, creating a squeezing effect on the steel pipe. Then, we observe whether the surface of the steel pipe changes, that is, whether there is any damage. This completes a simple inspection of the welding quality.

[0040] The fixed block 222 is rotatably connected to the threaded rod 221. The outer side of the threaded rod 221 is threaded with a second fixed plate 220. The second fixed plate 220 is fixedly connected to the fixed box 203. An elliptical plate 225 is fixedly connected to the lower side of the threaded rod 221. A first connecting plate 224 is fixedly connected to the lower side of the moving head 210. A second connecting plate 226 is fixedly connected to the side wall of the first connecting plate 224. The second connecting plate 226 and the elliptical plate 225 abut against each other.

[0041] During the process of the first connecting rod 209 driving the third connecting plate 229 and the fixing block 222 to move up and down as a whole, since the threaded rod 221 and the second fixing plate 220 are threadedly connected, and in the above connection process, the helix angle is much greater than the equivalent friction angle, there is no self-locking phenomenon. Therefore, the moving fixing block 222 will drive the threaded rod 221 to rotate, the threaded rod 221 will drive the elliptical plate 225 to rotate, the elliptical plate 225 will drive the second connecting plate 226 to move back and forth, the second connecting plate 226 will drive the first connecting plate 224 to move back and forth, the first connecting plate 224 will drive the moving head 210 to move back and forth, and the moving head 210 will drive the telescopic connecting rod 228 and the protective plate 211 to move. This movement process does not interfere with the up and down movement of the moving head 210 driving the movement of the protective plate 211. When the protective plate 211 moves to Figure 9 In the state shown in the fourth figure, the telescopic connecting rod 228, which moves back and forth, will cause the protective plate 211 to move back and forth relative to the welding rod. The protective plate 211 will cause the control plate 227 to move back and forth, which will cause the squeezing of the welding rod to become the hammering of the welding rod, making the protrusions on the surface of the welding rod easier to fall off, thereby improving the processing effect of the welding rod.

[0042] A first fixed plate 216 is fixedly connected to the side wall of the fixed box 203. A telescopic rotating rod 217 is rotatably connected to the lower side of the first fixed plate 216. The telescopic rotating rod 217 is driven by a pulley assembly 219 and a threaded rod 221. A circular plate 218 is fixedly connected to the lower side of the telescopic rotating rod 217. A third connecting rod 230 is fixedly connected to the lower side of the circular plate 218. A fourth connecting plate 231 is rotatably connected to the lower side of the third connecting rod 230. A sixth connecting plate 233 is rotatably connected to the lower side of the fourth connecting plate 231. A fifth connecting plate 232 is fixedly connected to the outer side of the two moving rods 213. The fifth connecting plate 232 and the sixth connecting plate 233 are fixedly connected, and the sixth connecting plate 233 is slidably connected to the fixed frame 212.

[0043] First, the pulley assembly 219 includes a belt and pulleys. The telescopic rotating rod 217 is formed by two cylinders of different diameters that slide against each other. The larger diameter cylinder is rotatably connected to the first fixed plate 216, and the smaller diameter cylinder is fixedly connected to the circular plate 218. One pulley is fixedly connected to the larger diameter cylinder, and the other pulley is slidably connected to the threaded rod 221. This pulley is also rotatably connected to the second fixed plate 220. When the threaded rod 221 rotates, the telescopic rotating rod 217 can be rotated via the pulley assembly 219. The telescopic rotating rod 217 drives the circular plate 218 to rotate. The circular plate 218 drives the sixth connecting plate 233 to move back and forth relative to the fixed frame 212 through the third connecting rod 230 and the fourth connecting plate 231. The sixth connecting plate 233 drives the fifth connecting plate 232 to move back and forth. The fifth connecting plate 232 drives the moving rod 213 to move back and forth. The moving rod 213 drives the baffle 214 to move back and forth. The baffle 214 drives the control plate 227 to move back and forth. When the control plate 227 comes into contact with the surface of the welding rod or steel pipe, it can better form the treatment effect on the surface of the welding rod and steel pipe.

[0044] Furthermore, during the aforementioned movement, although the protective plate 211 will move back and forth, that is, Figure 8 From the perspective of the processing head 204, the protective plate 211 will move back and forth about to the left and right, but the protective plate 211 will always provide a protective effect, that is, it will always reduce the possibility of sparks flying everywhere.

[0045] In this invention, when the steel pipe needs to be processed or welded, the heavier steel pipe is placed between multiple clamping plates 111, and multiple clamping hydraulic cylinders are activated simultaneously. The sliding plate 110 drives the clamping plates 111 to move until all the clamping plates 111 are in contact with the steel pipe, thereby completing the initial clamping and fixing operation of the steel pipe. Then, an appropriate number of support trolleys 105 are selected, and the position of the support trolleys 105 on the guide rail 104 is adjusted so that the support trolleys 105 move to the lower side of the steel pipe. The support hydraulic cylinder 106 is activated, and the support hydraulic cylinder 106 drives the support frame 107, support shaft 108, and support roller 109 to move upward until both support rollers 109 are in contact with the steel pipe, thereby completing the clamping and fixing operation of the steel pipe.

[0046] Insert the welding rod into the wire feed tube, start the wire feed motor, the wire feed motor drives the wire feed wheel to rotate, and then drives the welding rod to move along the direction of the wire feed tube, feeding the end of the welding rod to the arc area. The welding rod is electrically connected to the welding current through the wire. When welding is required, start the welding power supply, the welding rod and the workpiece come into contact, and the arc is started. The welding rod and the steel pipe form a molten pool. Rotate the steel pipe, the molten pool cools and solidifies, and finally a shaped weld is obtained.

[0047] At the start of welding, if the gap between the welding rod and the steel pipe is too large, the control motor 206 is started. The control motor 206 drives the gear 207 to rotate. The gear 207 drives the two racks 208 to move. The racks 208 drive the fixedly connected second connecting rod 215 to move downward. The second connecting rod 215 drives the processing head 204 to move downward. The processing head 204 drives the wire feeding assembly 205 and the welding rod to move downward together until the gap between the welding rod and the steel pipe meets the working requirements.

[0048] During the above-mentioned work process, the processing head 204 moves downward as a whole, which will drive the first connecting rod 209 to move upward. The first connecting rod 209 drives the third connecting plate 229, the fixed block 222, and the moving head 210 to move upward. The moving head 210 drives the protective plate 211 to move through the telescopic connecting rod 228, and the protective plate 211 becomes more vertical.

[0049] After welding is completed, the control motor 206 is started, which drives the gear 207 to rotate. The gear 207 drives the rack 208 to move, and the rack 208 drives the second connecting rod 215 and the processing head 204 to move upward, increasing the distance between the welding rod and the steel pipe. At the same time, another rack 208 drives the first connecting rod 209, the third connecting plate 229, the fixing block 222, and the moving head 210 to move downward. The moving head 210 drives the protective plate 211 to move through the telescopic connecting rod 228.

[0050] During this process, the control plate 227 and the welding rod come into contact, which will create a squeezing effect on the welding rod, causing damage to the welding rod, especially the protrusion formed at the end of the welding rod. As the device continues to move, the distance between the control plate 227 and the steel pipe becomes smaller and smaller, which will create a squeezing effect on the steel pipe. Then, observe whether the surface of the steel pipe changes, that is, whether damage occurs, and thus complete a simple inspection of the welding quality.

[0051] During the process of the first connecting rod 209 driving the third connecting plate 229 and the fixing block 222 to move up and down as a whole, the fixing block 222 will drive the threaded rod 221 to rotate, the threaded rod 221 will drive the elliptical plate 225 to rotate, the elliptical plate 225 will drive the second connecting plate 226, the first connecting plate 224, and the moving head 210 to move back and forth, and the moving head 210 will drive the telescopic connecting rod 228 and the protective plate 211 to move. This movement process does not interfere with the movement of the moving head 210 driving the movement of the protective plate 211. When the control plate 227 and the welding rod come into contact, the telescopic connecting rod 228 moving back and forth will drive the protective plate 211 to move back and forth relative to the welding rod. The protective plate 211 will drive the control plate 227 to move back and forth, which will cause the squeezing of the welding rod to become the hammering of the welding rod, making the protrusions on the surface of the welding rod easier to fall off, thereby improving the processing effect of the welding rod.

[0052] When the threaded rod 221 rotates, the pulley assembly 219 drives the telescopic rotating rod 217 to rotate. The telescopic rotating rod 217 drives the circular plate 218 to rotate. The circular plate 218 drives the sixth connecting plate 233 to move back and forth relative to the fixed frame 212 through the third connecting rod 230 and the fourth connecting plate 231. The sixth connecting plate 233 drives the fifth connecting plate 232 to move back and forth. The fifth connecting plate 232 drives the moving rod 213 to move back and forth. The moving rod 213 drives the baffle 214 to move back and forth. The baffle 214 drives the control plate 227 to move back and forth. When the control plate 227 comes into contact with the surface of the welding rod or steel pipe, it can better form the treatment effect on the surface of the welding rod and steel pipe.

Claims

1. A combined welding equipment for double-sealed flange connection of plastic-coated composite steel pipe, comprising a clamping assembly (1) and a welding assembly (2), characterized in that, The welding assembly (2) includes a support frame (201), to which a robotic arm (202) is fixedly connected. A fixed housing (203) is fixedly connected to the output end of the robotic arm (202). A wire feeding assembly (205) is slidably mounted on the fixed housing (203). A protective assembly is installed inside the fixed housing (203). The protective assembly includes a control motor (206) fixedly mounted inside the fixed housing (203). A gear (207) is fixedly connected to the output end of the control motor (206). Two racks (208) are slidably connected to the fixed housing (203), and both racks (208) are connected to the gears (207). The two racks are meshed, and one of the racks (208) is fixedly connected to a second connecting rod (215). The second connecting rod (215) is fixedly connected to a processing head (204). The processing head (204) is fixedly connected to a wire feeding assembly (205). The processing head (204) is fixedly connected to a fixing frame (212). The fixing frame (212) is slidably connected to two moving rods (213). The moving rods (213) are sleeved with a protective plate (211). The other rack (208) is fixedly connected to a first connecting rod (209) on its side wall. The first connecting rod (209) is connected to the protective plate (211) through a connecting assembly.

2. A combined welding apparatus for a double-seal flange connection plastic coated composite steel pipe according to claim 1, characterized in that, The connecting assembly includes a telescopic connecting rod (228) rotatably mounted on the side wall of the protective plate (211). The telescopic connecting rod (228) is fixedly connected to a moving head (210). The first connecting rod (209) is fixedly connected to a third connecting plate (229). The third connecting plate (229) is fixedly connected to a fixing block (222). The moving head (210) and the fixing block (222) are slidably connected, and a first spring (223) is fixedly connected between the moving head (210) and the fixing block (222).

3. A combined welding apparatus for a double-seal flange connection plastic coated composite steel pipe according to claim 2, characterized in that, The fixed block (222) is rotatably connected to a threaded rod (221), the threaded rod (221) is threadedly sleeved with a second fixed plate (220), the second fixed plate (220) and the fixed box (203) are fixedly connected, an elliptical plate (225) is fixedly connected to the lower side of the threaded rod (221), a first connecting plate (224) is fixedly connected to the lower side of the moving head (210), a second connecting plate (226) is fixedly connected to the side wall of the first connecting plate (224), and the second connecting plate (226) and the elliptical plate (225) abut against each other.

4. A combined welding apparatus for a double-seal flange connection plastic coated composite steel pipe according to claim 3, characterized in that, Two baffles (214) are fixedly connected to the outer sides of the two movable rods (213). The protective plate (211) is located between the two baffles (214) and abuts against the two baffles (214). A first fixed plate (216) is fixedly connected to the side wall of the fixed box (203). A telescopic rotating rod (217) is rotatably connected to the lower side of the first fixed plate (216). The telescopic rotating rod (217) is driven by a pulley assembly (219) and a threaded rod (221). A circular... The plate (218) is fixedly connected to the lower side of the circular plate (218), and the lower side of the third connecting rod (230) is rotatably connected to the fourth connecting plate (231). The lower side of the fourth connecting plate (231) is rotatably connected to the sixth connecting plate (233). The outer sides of the two moving rods (213) are jointly fixedly connected to the fifth connecting plate (232). The fifth connecting plate (232) and the sixth connecting plate (233) are fixedly connected, and the sixth connecting plate (233) and the fixed frame (212) are slidably connected.

5. A combined welding apparatus for a double-seal flange connection plastic coated composite steel pipe according to claim 4, characterized in that, The support frame (201) and the robotic arm (202) are jointly fixedly connected with multiple triangular stabilizing bars on their outer sides.

6. A combined welding apparatus for a double-seal flange connection plastic coated composite steel pipe according to claim 5, characterized in that, The fixed block (222) has deep grooves on both sides, and a sliding rod is slidably connected in the deep groove. The sliding rod and the moving head (210) are fixedly connected.

7. The combined welding equipment for double-sealed flange connection of plastic-coated composite steel pipe according to claim 1, characterized in that, A control plate (227) is slidably connected to the outside of the protective plate (211), and multiple buffer springs are fixedly connected between the control plate (227) and the protective plate (211).

Images