Assembly method and assembly device of straight steel pipe bundle

Abstract

The invention discloses an assembly method and an assembly device for a straight steel pipe bundle, and belongs to the technical field of steel pipe bundle production equipment. The assembly device includes a conveying roller arranged in a front-to-back direction and an assembly mechanism, a welding mechanism and a hole cutting mechanism arranged in sequence along the conveying roller; the assembly mechanism includes an assembly frame, a rear suspension manipulator, a front suspension manipulator, a plurality of gantry assembly frames, a top clamping structure, an assembly clamping structure, an assembly baffle and two spot welding structures; the welding mechanism includes a welding frame, a plurality of gantry welding frames, a welding baffle, two welding structures and a welding clamping structure; the hole cutting mechanism includes a hole cutting frame, a gantry cutting frame, a gantry drilling frame, a hole cutting baffle and a hole cutting clamping structure, the gantry cutting frame is provided with an end face cutting structure, and the gantry drilling frame is provided with a drilling structure; the end face cutting structure includes a horizontal beam, an arc guide plate and a cutting plasma cutting gun; the drilling structure includes a drilling plasma cutting gun.

Description

Technical Field

[0001] The invention belongs to the technical field of steel tube bundle production equipment, and in particular relates to an assembly method and an assembly device for a straight-line steel tube bundle. Background Art

[0002] The advantages of steel tube bundle residential products have been recognized to a certain extent during the construction process and have broad application prospects. Steel tube bundles are usually spliced ​​together by multiple steel tube bundle units, usually first spliced ​​into a straight shape, and then spliced ​​into other shapes, such as L-shaped, T-shaped, etc.

[0003] A single steel tube bundle unit is usually heavy and requires a lot of manual assembly work. In the prior art, automated assembly is usually performed mechanically. For example, the patent with application number CN201420613777.0 discloses automated production equipment for steel tube bundle combined structural components, including a cold bending forming device arranged along the conveying direction of the U-shaped steel tube in the production line, a U-shaped steel tube directional transfer device, an automatic assembly and welding device for a straight-line steel tube bundle, an automatic flipping device for a straight-line steel tube bundle structural component, an automatic assembly and welding device for a steel tube bundle combined structural component, and an automatic control system for controlling the operation of the above devices; the U-shaped steel tube directional transfer device includes a blanking roller for conveying the U-shaped steel tube, a 90-degree interval rotating wheel, a clockwise rotating swing arm receiving frame, a driving hydraulic cylinder for driving the swing arm receiving frame, and a transverse feeding roller, the blanking roller is arranged at the rear end of the cold bending forming device through a frame, the swing arm receiving frame and the driving hydraulic cylinder are installed on the frame, and the 90-degree interval rotating wheel is arranged on the side of the blanking roller, which is used to rotate the U-shaped steel tube with the opening facing upward clockwise by 90 The end of the swing arm receiving rack is arranged at the rear end of the 90-degree interval rotating wheel, and is used to receive the U-shaped steel pipe rotated by the 90-degree interval rotating wheel. The swing arm receiving rack rotates the U-shaped steel pipe 90 degrees so that the opening faces downward. The transverse material drop roller is arranged at the rear of the swing arm receiving rack, and is used to place the U-shaped steel pipe rotated by the swing arm receiving rack.

[0004] The automatic assembly welding device for the straight steel pipe bundle comprises a first welding workbench, a movable suspension manipulator, a fixed suspension manipulator, a suspension manipulator moving trolley, a first moving trolley door frame, a first gantry welding gun frame, a first conveying roller and a first welding gun. The first gantry welding gun frame and the first conveying roller are respectively installed and fixed on the first welding workbench, and the first gantry welding gun frame can move longitudinally along the guide rail on the first welding workbench; the first moving trolley door frame is fixed on the first welding workbench, and the suspension manipulator moving trolley is arranged on the first The movable suspension manipulator is fixedly mounted on the movable trolley and can move longitudinally along the first movable trolley; the movable suspension manipulator is fixedly mounted on the suspension manipulator movable trolley, the fixed suspension manipulator is fixedly mounted on the first movable trolley, the movable suspension manipulator can move longitudinally along the first movable trolley and the fixed suspension manipulator can clamp the I-shaped steel pipe bundle structural member together; the first welding gun is mounted on the first gantry welding gun frame and can move horizontally along the first gantry welding gun frame, and is used to weld the weld formed at the contact point of the upper and lower U-shaped steel pipes;

[0005] The automatic turning device for the I-shaped steel pipe bundle structural member comprises a base frame and a plurality of turning mechanisms longitudinally and parallelly arranged on the base frame, wherein the turning mechanism comprises a rotatable positioning turning arm, a fixed positioning turning arm, a turning arm moving trolley, a turning hydraulic system for driving the rotatable positioning turning arm to turn horizontally, a second conveying roller and a driving system for driving the turning arm moving trolley, wherein the second conveying roller is fixedly arranged on the base frame, and the turning arm moving trolley is arranged on the second conveying roller and can move longitudinally along the second conveying roller; the rotatable positioning turning arm and the fixed positioning turning arm are respectively arranged on the turning arm moving trolley, and the two are arranged opposite to each other;

[0006] The automatic assembly welding device for steel tube bundle combined structural components includes a first suspended manipulator, a second suspended manipulator, a second gantry welding gun frame, a first transverse moving trolley, a second transverse moving trolley, a longitudinal moving trolley, a second moving trolley door frame, a third conveying roller, a second welding workbench, and a second welding gun. The second gantry welding gun frame and the third conveying roller are respectively installed and fixed on the second welding workbench, and the second gantry welding gun frame can move longitudinally along the guide rail on the second welding workbench; the second moving trolley door frame is fixed on the second welding workbench, the longitudinal moving trolley is arranged on the second moving trolley door frame and can move transversely along the second moving trolley door frame, and the first transverse moving trolley is fixed on the longitudinal moving trolley. The second transverse moving trolley is arranged on the second moving trolley portal frame and can move transversely along the second moving trolley portal frame; the first suspended manipulator is arranged on the first transverse moving trolley, and the second suspended manipulator is arranged on the second transverse moving trolley. The first suspended manipulator can move transversely or longitudinally along the second moving trolley portal frame, and the second suspended manipulator can move longitudinally along the second moving trolley portal frame; the first suspended manipulator and the second suspended manipulator jointly clamp the steel pipe bundle combined structural member; the second welding gun is installed on the second gantry welding gun frame and can move in the horizontal direction along the second gantry welding gun frame, and is used to weld the weld formed at the contact point of the upper and lower U-shaped steel pipes; the second lateral clamping mechanism is installed on the second gantry welding gun frame and can move in the horizontal direction along the second gantry welding gun frame, and is used to clamp the side of the steel pipe bundle combined structural member.

[0007] When the applicant used the aforementioned automated production equipment to process steel pipe bundles, it was discovered that:

[0008] (1) When assembling, spot welding is better, and then welding the welds;

[0009] (2) Low production efficiency and low applicability. Summary of the invention

[0010] In order to solve the above problems, the embodiment of the present invention provides an assembly method and an assembly device for a straight steel pipe bundle, which ensures the welding effect and improves the production effect. The technical solution is as follows:

[0011] On the one hand, an embodiment of the present invention provides an assembly device for a straight steel pipe bundle, including a conveyor roller 1 arranged along the front-to-back direction and an assembly mechanism, a welding mechanism and a hole cutting mechanism sequentially arranged along the conveyor roller 1.

[0012] The assembly mechanism includes an assembly rack, a rear suspension manipulator 10 at the rear end of the assembly rack and capable of moving up and down, a front suspension manipulator 11 at the front end of the assembly rack and capable of moving up and down, a plurality of gantry assembly racks 12 arranged on the assembly rack along the forward and backward sliding direction and located above the conveyor roller 1, a top clamping structure on the gantry assembly rack 12 and capable of moving up and down, an assembly clamping structure on the gantry assembly rack 12 and located on the left and right sides of the steel pipe bundle 2, an assembly baffle at the rear end of the assembly rack and capable of blocking the steel pipe bundle unit 3 from passing through, and two spot welding structures on the left and right sides of the gantry assembly rack 12, the front suspension manipulator 11 and the rear suspension manipulator 11 are arranged on the assembly rack along the forward and backward sliding direction and located above the conveyor roller 1, a top clamping structure on the gantry assembly rack 12 and capable of moving up and down, an assembly clamping structure on the gantry assembly rack 12 and located on the left and right sides of the steel pipe bundle 2, an assembly baffle at the rear end of the assembly rack and capable of blocking the steel pipe bundle unit 3 from passing through, and two spot welding structures on the left and right sides of the gantry assembly rack 12. The manipulators 10 are all arranged directly above the steel tube bundle 2 and can respectively grab the front and rear ends of the top of the steel tube bundle 2. The rear suspension manipulator 10 is located directly above the assembly baffle, and the front suspension manipulator 11 can move forward and backward. Multiple gantry assembly frames 12 are arranged at intervals in front and back and can move forward and backward. Two spot welding structures are arranged symmetrically and are respectively located on the left and right sides of the steel tube bundle 2; the spot welding structure includes two spot welding guns 13 arranged side by side in an upper and lower manner, and the two spot welding guns 13 are respectively facing the connection points of the three lowest steel tube bundle units 3; the spot welding guns 13 are arranged in the left and right directions and can be driven by the assembly cylinder 14 to move in the left and right directions.

[0013] The welding mechanism includes a welding frame, a plurality of gantry welding frames 20 which are slidably arranged on the welding frame along the front-back direction and are located above the conveying roller 1, a welding baffle at the rear end of the welding frame and capable of blocking the steel pipe bundle 2 from passing through, two welding structures on the left and right sides of the gantry welding frame 20, and a welding clamping structure on the gantry welding frame 20 and located on the left and right sides of the steel pipe bundle 2. The plurality of gantry welding frames 20 are arranged at intervals in front and back and can move forward and backward. The two welding structures are arranged symmetrically on the left and right sides and are respectively located on the left and right sides of the steel pipe bundle 2. The welding structure includes two welding guns 21 which are arranged side by side in an upper and lower direction and can move up and down. The two welding guns 21 start welding from the weld in the middle, one of which moves upward to weld the upper part of the steel pipe bundle 2, and the other moves downward to weld the lower part of the steel pipe bundle 2. The welding gun 21 is arranged in the left and right directions and is driven by a welding cylinder 22 to move in the left and right directions.

[0014] The hole cutting mechanism includes a hole cutting frame, at least two gantry frames which are slidably arranged on the hole cutting frame along the front-back direction and are located above the conveying roller 1, a hole cutting baffle at the rear end of the hole cutting frame which can block the steel pipe bundle 2 from passing through, and a hole cutting clamping structure on the left and right sides of the gantry frame. The plurality of gantry frames are arranged at intervals in the front and back directions and can all move forward and backward. The frontmost gantry frame is a gantry cutting frame 30, and the remaining gantry frames are gantry drilling frames 31. An end face cutting structure which can move up and down is provided on the left or right side of the gantry cutting frame 30, and two drilling structures which can move up and down are provided on the left and right sides of the gantry drilling frame 31; the end face cutting structure The structure includes a horizontal beam 32 that can move up and down and is arranged in the left and right direction, an arc-shaped guide plate 33 that can move left and right on the horizontal beam 32, and a cutting plasma cutting gun 34 that can move in an arc shape on the arc-shaped guide plate 33; the cutting plasma cutting gun 34 is arranged in the front-back direction, with its muzzle facing downward and its muzzle perpendicular to the steel tube bundle unit 3, and it can extend into the steel tube bundle unit 3 to cut multiple steel tube bundle units 3 to a predetermined length with the front ends flush; the two drilling structures are respectively located on the left and right sides of the steel tube bundle 2, and the drilling structure includes a drilling plasma cutting gun 35 that can move up and down and is arranged in the left and right direction, and the drilling plasma cutting gun 35 can be driven by a drilling cylinder 36 to move in the left and right directions.

[0015] Among them, an assembly vertical slide rail 15 is provided on the front or rear side of the vertical beam of the gantry-type assembly frame 12 in the embodiment of the present invention, and two assembly vertical slides 16 are slidably provided on the assembly vertical slide rail 15. The two assembly vertical slides 16 are arranged side by side up and down, and a screw drive structure 17 is provided between the assembly vertical slide 16 and the corresponding side of the gantry-type assembly frame 12 for driving the assembly vertical slide 16 to move up and down. The assembly cylinder 14 is fixed to the outer side of the assembly vertical slide 16 and a spot welding gun 13 is provided at the inner end of its telescopic rod. The spot welding gun 13 is slidably arranged on the assembly vertical slide 16 along the left and right directions, and the screw drive structure 17 is vertically arranged and driven by a servo motor.

[0016] Among them, the front and rear ends of the assembly frame in the embodiment of the present invention and located above the gantry assembly frame 12 are respectively provided with a front lifting gantry 18 and a rear lifting gantry 19, the rear suspension manipulator 10 is arranged on the rear lifting gantry 19 and a first lifting structure is arranged between them, the front suspension manipulator 11 is arranged on the front lifting gantry 18 and a second lifting structure and a forward and backward moving structure are arranged between them so that the front suspension manipulator 11 can move forward and backward and move up and down, the forward and backward moving structure can be arranged on the front lifting gantry 18 so as to move forward and backward, and the second lifting structure can move up and down It is movably arranged on the front-to-back moving structure, and the front suspended manipulator 11 is arranged at the lower end of the second lifting structure; the front suspended manipulator 11 includes a front gripper which opens rearward and can slide back and forth at the lower end of the second lifting structure, and a front driving cylinder which is between the front gripper and the second lifting structure and can drive the front gripper to slide back and forth; the rear suspended manipulator 10 includes a rear gripper which opens forward and can slide back and forth at the lower end of the first lifting structure, and a rear driving cylinder which is between the rear gripper and the first lifting structure and can drive the rear gripper to slide back and forth, and the front gripper and the rear gripper are both U-shaped structures arranged forward and backward.

[0017] Among them, the top clamping structure in the embodiment of the present invention is located directly above the steel tube bundle 2, and includes a top guide roller 120 arranged in the left and right directions and capable of pressing on the top of the steel tube bundle 2, a fixed small side roller 110 arranged vertically and pressed on the left or right side of the steel tube bundle unit 3 at the top, a movable small side roller 111 arranged vertically and capable of pressing on the other side of the steel tube bundle unit 3 at the top, and a top driving cylinder 112 for moving the movable small side roller 111 left and right; two clamping slide rails are arranged vertically on the inner sides of the two vertical beams of the gantry-type assembly frame 12, and the two clamping slide rails are symmetrically arranged on the left and right and a lifting frame 113 is arranged between them, and the lifting frame 113 is slidably arranged on the clamping slide rail and two fixed blocks are arranged vertically on the left and right sides of its lower end. Plate 114, the left and right ends of the top guide roller 120 are arranged on the fixed plate 114 on the corresponding side, the upper end of the fixed small side roller 110 is arranged at the bottom of the fixed plate 114 on the left or right side, the outer side of the fixed plate 114 on which the fixed small side roller 110 is fixed is provided with a top driving cylinder 112 along the left and right directions, the outer end of the telescopic rod of the top driving cylinder 112 is provided with a first movable plate 115, and the outer side of the fixed plate 114 on the other side is provided with a second movable plate 116, the upper end of the movable small side roller 111 is arranged at the bottom of the second movable plate 116, and at least one sliding rod 117 is provided between the second movable plate 116 and the first movable plate 115 along the left and right directions, and the sliding rod 117 can slide left and right and is arranged on the lifting frame 113.

[0018] Among them, the assembly clamping structure in the embodiment of the present invention includes a fixed large side roller 118 which is vertically arranged and presses on the left or right side of the steel tube bundle 2, a dynamic large side roller 119 which is vertically arranged and can press on the other side of the steel tube bundle 2, and a clamping drive cylinder for moving the dynamic large side roller 119 left and right; the dynamic small side roller 111 and the dynamic large side roller 119 are located on the same side; the fixed large side roller 118 and the dynamic large side roller 119 are both from the lower part of the bottom steel tube bundle unit 3 to the upper part of the third steel tube bundle unit 3; the fixed large side roller 118 is arranged on the vertical beam on the corresponding side of the gantry assembly frame 12 through a fixed arm; the dynamic large side roller 119 is arranged at the front end or rear end of a swing arm; the other end of the swing arm is rotatably arranged on the vertical beam on the other side of the gantry assembly frame 12 through a vertically arranged rotating shaft, and a clamping drive cylinder is arranged between the middle part and the gantry assembly frame 12 along the left and right directions.

[0019] Among them, the front side or rear side of the vertical beam of the gantry welding frame 20 in the embodiment of the present invention is provided with a welding lifting slide rail 23 and a welding lifting rack 24 in the vertical direction, and two welding lifting slides 25 are slidably provided on the welding lifting slide rail 23, and a welding rack lifting structure cooperating with the welding lifting rack 24 is provided on the welding lifting slide 25; a welding cylinder 22 is provided on the outer side of the welding lifting slide 25 along the left and right directions, and a welding horizontal slide rail 26 is provided on the inner side thereof along the left and right directions, and a welding horizontal slide 27 is slidably provided on the welding horizontal slide rail 26, and the welding gun 21 is fixed on the welding horizontal slide 27, and the inner end of the telescopic rod of the welding cylinder 22 is fixedly connected to the welding horizontal slide 27, and a positioning photoelectric sensor 28 is provided on the welding horizontal slide 27 and located in front of or behind the welding gun 21 along the left and right directions; a wire feeding structure that can move up and down with the welding gun 21 is provided on the vertical beam of the gantry welding frame 20 and located on the outer side of the welding gun 21.

[0020] Among them, the front side of the vertical beam of the gantry cutting machine frame 30 in the embodiment of the present invention is provided with a section lifting slide rail 37 and a section lifting rack 38 in the vertical direction, and a section lifting slide 39 is slidably provided on the section lifting slide rail 37, and a section rack lifting structure cooperating with the section lifting rack 38 is provided on the section lifting slide 39; the end of the horizontal beam 32 is fixed on the section lifting slide 39, and the bottom and top of the horizontal beam 32 are provided with section horizontal slide rails 310 in the left and right directions, and the front side of the horizontal beam 32 is provided with a section horizontal rack 318 in the left and right directions; a section horizontal slide 311 is slidably provided on the two section horizontal slide rails 310, and the front side of the section horizontal slide 311 is provided with A first rack travel structure cooperates with the section horizontal rack 318 and has an arc guide plate 33 at its bottom; the arc guide plate 33 is a downwardly open arc plate, the rear side of which is fixedly connected to the section horizontal slide 311, and the front side is provided with an arc slide 312 that can make an arc movement on the arc guide plate 33; the section plasma cutting gun 34 is arranged at the bottom of the arc slide 312 and the muzzle at the rear end is bent downward and perpendicular to the steel tube bundle unit 3; the arc guide plate 33 is an arc plate and has arc travel teeth on its inner edge, the arc slide 312 is slidably arranged on the arc guide plate 33 and has a second rack travel structure that cooperates with the arc travel teeth at its front side.

[0021] Among them, the front side or rear side of the vertical beam of the gantry drilling frame 31 in the embodiment of the present invention is provided with a drilling lifting slide rail 313 and a drilling lifting rack 314 in the vertical direction, and a drilling lifting slide 315 is slidably provided on the drilling lifting slide rail 313, and a drilling rack lifting structure cooperating with the drilling lifting rack 314 is provided on the drilling lifting slide 315; a drilling cylinder 36 is provided on the outer side of the drilling lifting slide 315 along the left and right directions, and a drilling horizontal slide rail 316 is provided on the inner side thereof along the left and right directions; a drilling horizontal slide 317 is slidably provided on the drilling horizontal slide rail 316, and the drilling plasma cutting gun 35 is fixed on the drilling horizontal slide 317, and the inner end of the telescopic rod of the drilling cylinder 36 is fixedly connected to the drilling horizontal slide 317.

[0022] Furthermore, in the embodiment of the present invention, a flipping mechanism is provided between the assembly mechanism and the welding mechanism and located on the conveyor roller 1, and between the welding mechanism and the hole cutting mechanism and located on the conveyor roller 1. A steel pipe bundle buffer rack for temporarily storing the steel pipe bundle 2 is provided on one side of the flipping mechanism.

[0023] On the other hand, an embodiment of the present invention also provides a method for assembling a straight steel pipe bundle, the method comprising the following steps:

[0024] (1) Assembly and spot welding: In the assembly mechanism, when the first steel tube bundle unit moves to the assembly baffle, the rear suspension manipulator and the front suspension manipulator move to lift the first steel tube bundle unit upward; continue to input the second steel tube bundle unit to the bottom of the suspended steel tube bundle unit; the top clamping structure and the assembly clamping structure position the two steel tube bundle units; at this time, the gantry assembly frame is evenly distributed and the two spot welding guns on both sides move inward to assemble the two steel tube bundle units; after the assembly is completed, the top clamping structure and the assembly clamping structure return to their positions; the rear suspension manipulator and the front suspension manipulator move to lift the two welded steel tube bundle units upward; continue to input the third steel tube bundle unit to the bottom of the suspended steel tube bundle unit; repeat the above assembly process; after the three steel tube bundle units are combined together, the gantry assembly frame moves forward and backward to perform repair welding on multiple points of the weld until they meet the requirements; and so on, repair welding is performed once for every two additional steel tube bundle units; until the predetermined number of steel tube bundles is reached, the steel tube bundle is obtained.

[0025] (2) Welding: The assembled steel pipe bundle is placed in the welding mechanism. When the steel pipe bundle moves to the welding baffle, the welding clamping structure positions the steel pipe bundle. The welding gun moves toward the steel pipe bundle to weld the steel pipe bundle. During welding, the two welding guns on the same side start welding in the middle of the steel pipe bundle. The upper welding gun moves upward to weld the upper weld, and the lower welding gun moves downward to weld the lower weld. At the same time, multiple gantry welding frames move forward and backward to cooperate to weld the entire weld.

[0026] (3) Hole cutting: The welded steel pipe bundle is placed in the hole cutting mechanism. When the steel pipe bundle moves to the hole cutting baffle, the hole cutting clamping structure positions the steel pipe bundle. The gantry cutting frame moves to the cutting position and the cutting plasma cutting gun thereon performs cutting processing on the front end of the steel pipe bundle. The gantry drilling frame moves to the drilling position and the drilling plasma cutting gun moves inward to perform drilling processing on the steel pipe bundle.

[0027] The technical solution provided by the embodiment of the present invention has the following beneficial effects: the embodiment of the present invention provides an assembly method and an assembly device for a straight-line steel tube bundle, wherein a plurality of steel tube bundle units are assembled by an assembly mechanism to obtain a straight-line structure, and spot welding is performed on two adjacent steel tube bundle units during the assembly process; after the processing is completed, the steel tube bundle is welded and hole-cut by a welding mechanism and a hole-cutting mechanism respectively; the processing speed is fast, and it can adapt to steel tube bundle units of various specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of a straight-line steel tube bundle provided in an embodiment of the present invention;

[0029] Figure 2 is a structural schematic diagram of an assembly mechanism provided by an embodiment of the present invention;

[0030] Figure 3 is a schematic structural diagram of a front suspension manipulator provided by an embodiment of the present invention;

[0031] Figure 4 is a schematic structural diagram of a rear suspension manipulator provided by an embodiment of the present invention;

[0032] Figure 5 is a schematic structural diagram of a gantry type assembly frame provided by an embodiment of the present invention;

[0033] Figure 6 It is a structural schematic diagram of a top clamping structure, a lateral clamping structure and a steel pipe bundle combination provided by an embodiment of the present invention;

[0034] Figure 7 is a structural schematic diagram of a welding mechanism provided by an embodiment of the present invention;

[0035] Figure 8 It is a structural schematic diagram of a gantry type welding frame provided by an embodiment of the present invention;

[0036] Fig. 9 is a structural schematic diagram of a hole cutting mechanism provided by an embodiment of the present invention;

[0037] Fig.10 is a schematic structural diagram of a gantry-type cutting machine frame provided in an embodiment of the present invention;

[0038] Fig.11 It is a schematic structural diagram of a gantry type drilling frame provided in an embodiment of the present invention.

[0039] In the figure: 1 conveyor roller, 2 steel tube bundle, 3 steel tube bundle unit;

[0040] 10 rear suspension manipulator, 11 front suspension manipulator, 12 gantry assembly rack, 13 spot welding gun, 14 assembly cylinder, 15 assembly vertical slide rail, 16 assembly vertical slide seat, 17 screw drive structure, 18 front lifting gantry, 19 rear lifting gantry, 110 fixed small side roller, 111 dynamic small side roller, 112 top drive cylinder, 113 lifting frame, 114 fixed plate, 115 first movable plate, 116 second movable plate, 117 slide bar, 118 fixed large side roller, 119 dynamic large side roller, 120 top guide roller;

[0041] 20 gantry welding frame, 21 welding gun, 22 welding cylinder, 23 welding lifting slide rail, 24 welding lifting rack, 25 welding lifting slide seat, 26 welding horizontal slide rail, 27 welding horizontal slide seat, 28 positioning photoelectric sensor;

[0042] 30 gantry cutting frame, 31 gantry drilling frame, 32 horizontal beam, 33 arc guide plate, 34 section plasma cutting gun, 35 drilling plasma cutting gun, 36 drilling cylinder, 37 section lifting slide, 38 section lifting rack, 39 section lifting slide, 310 section horizontal slide, 311 section horizontal slide, 312 arc slide, 313 drilling lifting slide, 314 drilling lifting rack, 315 drilling lifting slide, 316 drilling horizontal slide, 317 drilling horizontal slide, 318 section horizontal rack. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0044] Example 1

[0045] See also Figure 1-11 The embodiment of the present invention provides an assembly device for a straight steel pipe bundle, comprising a conveyor roller 1 arranged in a front-to-back direction and an assembly mechanism, a welding mechanism and a hole cutting mechanism arranged in sequence along the conveyor roller 1. The conveyor roller 1 comprises a plurality of conveyor rollers arranged side by side in a front-to-back direction and driven synchronously.

[0046] Among them, see Figure 2-6The assembly mechanism in the embodiment of the present invention includes an assembly frame (arranged in the front-to-back direction), a rear suspension manipulator 10 at the rear end of the assembly frame and capable of moving up and down, a front suspension manipulator 11 at the front end of the assembly frame and capable of moving up and down, a plurality of (specifically 3-6, one for every 3-6 meters, and 4 in this embodiment) gantry-type assembly frames 12 (perpendicular to the conveyor roller 2, with vertical beams on both sides thereof respectively located on the left and right sides of the conveyor roller 2) slidingly arranged on the assembly frame in the front-to-back direction and located above the conveyor roller 1, and a plurality of (specifically 3-6, one for every 3-6 meters, and 4 in this embodiment) gantry-type assembly frames 12 on the gantry-type assembly frame 12 The top clamping structure that can move up and down (used to clamp the left and right sides of the steel tube bundle 2), the assembly clamping structure on the gantry assembly frame 12 and located on the left and right sides of the steel tube bundle 2 (used to clamp the left and right sides of the steel tube bundle 2), the assembly baffle at the rear end of the assembly frame that can block the passage of the steel tube bundle unit 3 (used to position the bottom steel tube bundle unit 3, and then position the entire steel tube bundle 2 (the rear end is flush)), and the two spot welding structures on the left and right sides of the gantry assembly frame 12 (to fix two adjacent steel tube bundle units 3 together), etc. Among them, the front suspension manipulator 11 and the rear suspension manipulator 10 are both located directly above the steel tube bundle 2 and can respectively grab the front and rear ends of the top of the steel tube bundle 2 (the front and rear ends of the topmost steel tube bundle unit 3), the rear suspension manipulator 10 is located directly above the assembly baffle, and the front suspension manipulator 11 can move forward and backward. Multiple gantry assembly racks 12 are arranged at intervals in front and back and can move forward and backward. Two spot welding structures are arranged symmetrically and are respectively located on the left and right sides of the steel pipe bundle 2. The spot welding structure includes two spot welding guns 13 arranged side by side in an upper and lower direction (it is best to adjust the position up and down to adapt to products of different specifications). The two spot welding guns 13 are respectively facing the connection (weld seam) of the three lowest steel pipe bundle units 3. The spot welding guns 13 (towards the weld seam) are arranged in the left and right directions and can be driven by the assembly cylinder 14 to move in the left and right directions (moving towards the weld seam during spot welding and moving away from the weld seam after spot welding is completed).

[0047] Among them, see Figure 7-8The welding mechanism in the embodiment of the present invention includes a welding frame (arranged in the front-to-back direction), a plurality of (specifically 3-6, one is arranged every 3-6 meters, and 4 in this embodiment) gantry-type welding frames 20 (perpendicular to the conveyor roller 2, and the vertical beams on both sides are respectively located on the left and right sides of the conveyor roller 2) slidably arranged on the welding frame in the front-to-back direction and located above the conveyor roller 1, a welding baffle at the rear end of the welding frame that can block the steel pipe bundle 2 from passing through, two welding structures on the left and right sides of the gantry-type welding frame 20, and a welding clamping structure on the gantry-type welding frame 20 and located on the left and right sides of the steel pipe bundle 2 (used to press the left and right sides of the steel pipe bundle 2), etc. The plurality of gantry-type welding frames 20 are arranged at intervals in the front and back directions and can all move forward and backward, and the two welding structures are arranged symmetrically in the left and right directions and are respectively located on the left and right sides of the steel pipe bundle 2. The welding structure includes two welding guns 21 arranged side by side and capable of moving up and down (in accordance with conventional technology, dust suction ports may be provided on them); the two welding guns 21 start welding from the weld in the middle, one of which moves upward to weld the upper part of the steel pipe bundle 2, and the other moves downward to weld the lower part of the steel pipe bundle 2. The welding guns 21 are arranged in the left and right directions and are driven by the welding cylinder 22 to move in the left and right directions. The welding guns 21 move toward the weld during welding and move away from the weld after welding is completed.

[0048] Among them, see Figure 9-11 The hole cutting mechanism in the embodiment of the present invention includes a hole cutting frame (arranged in the front-to-back direction), at least two gantry frames (the number is 2-5, and the number is 4 in this embodiment, and one is arranged every 3-6 meters) which are arranged on the hole cutting frame and slide in the front-to-back direction and are located above the conveyor roller 1, and are perpendicular to the conveyor roller 2, and the vertical beams on both sides of the gantry frames are respectively located on the left and right sides of the conveyor roller 2, a hole cutting baffle at the rear end of the hole cutting frame that can block the steel pipe bundle 2 from passing through (used to position the steel pipe bundle 2), and a hole cutting clamping structure on the left and right sides of the gantry frame (used to press the left and right sides of the steel pipe bundle 2), etc., and the multiple gantry frames are arranged at intervals in front and back and can move forward and backward. The frontmost gantry frame is a gantry cutting frame 30 for cutting surface processing, and the remaining gantry frames are gantry drilling frames 31 for drilling processing. An end face cutting structure that can move up and down is provided on the left or right side of the gantry cutting frame 30, and two drilling structures that can move up and down are provided on the left and right sides of the gantry drilling frame 31.

[0049] Among them, see Fig.10 and 11The end face cutting structure in this embodiment includes a horizontal beam 32 (specifically a rectangular beam) that can move up and down and is arranged in the left and right directions, an arc-shaped guide plate 33 that can move left and right on the horizontal beam 32, and a cutting plasma cutting gun 34 (conventional structure) that can move in an arc shape on the arc-shaped guide plate 33. Among them, the cutting plasma cutting gun 34 is arranged in the front-back direction, with its muzzle facing downward and perpendicular to the steel tube bundle unit 3. It can extend into the steel tube bundle unit 3 to cut multiple steel tube bundle units 3 to a predetermined length and the front ends are flush. Among them, the muzzle of the cutting plasma cutting gun 34 can move in an arc shape to ensure that the front end of the steel tube bundle unit 3 is cut off. The two drilling structures are respectively located on the left and right sides of the steel tube bundle 2. The drilling structure includes a drilling plasma cutting gun 35 (conventional structure) that can move up and down and is arranged in the left and right directions. The drilling plasma cutting gun 35 can be driven by a drilling cylinder 36 to move in the left and right directions (moving toward the steel tube bundle 2 during drilling and moving away from the steel tube bundle 2 after drilling is completed).

[0050] Among them, see Figure 2 In the embodiment of the present invention, an assembly vertical slide rail 15 (specifically composed of two slide rails arranged side by side on the left and right) is provided on the front or rear side of the vertical beam of the gantry assembly frame 12. Two assembly vertical slide seats 16 are slidably provided on the assembly vertical slide rail 15. The two assembly vertical slide seats 16 are arranged side by side up and down. A lead screw driving structure 17 is provided between the assembly vertical slide seat 16 and the corresponding side of the gantry assembly frame 12 to drive the assembly vertical slide seat 16 to move up and down. Specifically, a lead screw driving structure 17 is provided above the assembly vertical slide rail 15. The lead screw driving structure 17 is threadedly connected to the upper assembly vertical slide seat 16 through a lead screw arranged in the vertical direction (a rotating seat is provided between the two assembly vertical slide seats 16, and the lower end of the lead screw is rotatably connected to the rotating seat) or rotatably connected; accordingly, another lead screw driving structure 17 is provided below the assembly vertical slide rail 15 to drive the lower assembly vertical slide seat 16. The assembly cylinder 14 is fixed on the outer side of the assembly vertical slide 16 and a spot welding gun 13 is provided at the inner end of its telescopic rod. The spot welding gun 13 is slidably arranged on the assembly vertical slide 16 along the left and right directions (a horizontal slide rail is provided at the lower front part along the left and right directions, a horizontal slide is slidably arranged on the horizontal slide rail, the spot welding gun 11 is arranged on the horizontal slide, and the inner end of the telescopic rod of the welding cylinder 12 is fixedly connected to the horizontal slide). The screw drive structure 17 is vertically arranged and driven by a servo motor.

[0051] Among them, see Figure 2-4In the embodiment of the present invention, the front and rear ends of the assembly frame and located above the gantry assembly frame 12 (the top beam of the lifting gantry is located above the top beam of the gantry assembly frame) are respectively provided with a front lifting gantry 18 and a rear lifting gantry 19, and the rear suspension manipulator 10 is arranged on the rear lifting gantry 19 (in the middle) and a first lifting structure (conventional structure, specifically a rack lifting structure or a screw lifting structure) is arranged therebetween for moving the rear suspension manipulator 10 up and down, and the front suspension manipulator 11 is arranged on the front lifting gantry A second lifting structure (conventional structure, specifically a rack lifting structure or a screw lifting structure) and a forward-backward moving structure (conventional structure, specifically a rack lifting structure or a screw lifting structure, with a slide rail provided on the upper side in the forward-backward direction) are provided on and between the frame 18 so that the front suspension manipulator 11 can move forward-backward and up-down. The forward-backward moving structure can be provided on the front lifting gantry 18 so as to move forward-backward, and the second lifting structure can be provided on the forward-backward moving structure so as to move up-down. The front suspension manipulator 11 is provided at the lower end of the second lifting structure. Specifically, the front suspension manipulator 11 includes a front gripper that opens backward and can slide forward-backward at the lower end of the second lifting structure (specifically, a slide rail is provided on the top of the front gripper in the forward-backward direction, and a slide groove is provided at the bottom of the second lifting structure) and a front driving cylinder (provided in the forward-backward direction, provided on the front side of the second lifting structure, and the rear end of its telescopic rod is connected to the front gripper) between the front gripper and the second lifting structure and can drive the front gripper to slide forward-backward. The rear suspended manipulator 10 includes a rear gripper that opens forward and can slide back and forth at the lower end of the first lifting structure (specifically, a slide rail is provided on the top of the rear gripper along the front-to-back direction, and a slide groove is provided at the bottom of the first lifting structure) and a rear driving cylinder between the rear gripper and the first lifting structure that can drive the rear gripper to slide back and forth (arranged along the front-to-back direction, arranged on the rear side of the first lifting structure, and the front end of the telescopic rod is connected to the rear gripper 29), etc. The front gripper and the rear gripper are both U-shaped structures arranged in the front-to-back direction.

[0052] Among them, see Figure 6The top pressing structure in the embodiment of the present invention is located directly above the steel tube bundle 2, and includes a top guide roller 120 arranged in the left-right direction and capable of pressing on the top of the steel tube bundle 2 (the topmost steel tube bundle unit 3), a fixed small side roller 110 arranged vertically and pressing on the left or right side of the top steel tube bundle unit 3, a movable small side roller 111 arranged vertically and capable of pressing on the other side (right or left) of the top steel tube bundle unit 3, and a top driving cylinder 112 for moving the movable small side roller 111 left and right. Two clamping slide rails (composed of two slide rails arranged side by side on the left and right) are provided on the inner sides of the two vertical beams of the gantry-type assembly frame 12 in the vertical direction. The two clamping slide rails are symmetrically arranged on the left and right sides and a lifting frame 113 is provided in between. The left and right sides of the lifting frame 113 are respectively slidably arranged on the clamping slide rails on the corresponding sides and two fixed plates 114 (specifically rectangular plates arranged in the front-to-back direction) are provided on the left and right sides of the lower end thereof in the vertical direction. The left and right ends of the top guide roller 120 are arranged on the fixed plate 114 on the corresponding side, the upper end of the fixed small side roller 110 is arranged at the bottom of the fixed plate 114 on the left or right side, and the outer side of the fixed plate 114 to which the fixed small side roller 110 is fixed is provided with a top driving cylinder 112 (the cylinder body is fixed on the outer side of the fixed plate 114) in the left-right direction. The outer end of the telescopic rod of the top driving cylinder 112 is provided with a first movable plate 115 (specifically a rectangular plate arranged in the front-to-back direction), and the outer side of the fixed plate 114 on the other side is provided with a second movable plate 116 (specifically a rectangular plate arranged in the front-to-back direction), and the first movable plate 115 and the second movable plate 116 are arranged in parallel. The upper end of the movable small side roller 111 is arranged at the bottom of the second movable plate 116, and at least one sliding rod 117 (specifically a smooth round rod) is arranged between the second movable plate 116 and the first movable plate 115 in the left-right direction, and the sliding rod 117 can slide left-right on the lifting frame 113. Specifically, there are two sliding rods 117, and the two sliding rods 117 are arranged side by side up and down, and the lower sliding rod 117 passes through the rotating shaft (hollow shaft) of the top guide roller 120, and the upper sliding rod 117 passes through the lifting frame 113.

[0053] Among them, see Figure 6The assembly clamping structure in the embodiment of the present invention includes a fixed large side roller 118 arranged vertically and pressing on the left or right side of the steel tube bundle 2, a movable large side roller 119 arranged vertically and capable of pressing on the other side of the steel tube bundle 2 (with a larger diameter than the fixed small side roller 110 and a longer length than the fixed small side roller 110), and a clamping drive cylinder for moving the movable large side roller 119 left and right. Among them, the movable small side roller 111 and the movable large side roller 119 are located on the same side, and the fixed small side roller 110 and the fixed large side roller 118 are located on the same front-to-back vertical plane. Before the steel tube bundle 2 moves to the assembly baffle, the movable small side roller 111 and the movable large side roller 119 are both away from the steel tube bundle 2; after the steel tube bundle 2 moves to the assembly baffle, the movable small side roller 111 and the movable large side roller 119 are both facing the steel tube bundle 2 to clamp the steel tube bundle 2. The fixed large side roller 118 and the dynamic large side roller 119 are both from the lower part of the bottom steel tube bundle unit 3 to the upper part of the third steel tube bundle unit 3 (counted from the bottom to the top). The fixed large side roller 118 is arranged on the vertical beam on the corresponding side (left or right) of the gantry assembly frame 12 through a fixed arm; the dynamic large side roller 119 is arranged on the front end or rear end of the swing arm; the other end of the swing arm (arranged along the front and rear direction) is rotatably arranged on the vertical beam on the other side (right or left) of the gantry assembly frame 12 through a vertically arranged rotating shaft, and a clamping drive cylinder is arranged between the middle part and the gantry assembly frame 12 along the left and right directions (hinged with the outer side of the swing arm and the gantry assembly frame 12). Furthermore, the welding clamping structure and the hole cutting clamping structure are basically the same as the assembly clamping structure. Furthermore, the fixed large side roller and the movable large side roller on the same side can be composed of two guide rollers arranged side by side up and down (arranged at intervals, coaxially and respectively arranged at the upper and lower parts of the gantry bracket).

[0054] Among them, the front side or rear side of the vertical beam of the gantry welding frame 20 in the embodiment of the present invention is provided with a welding lifting rail 23 (including two rails arranged side by side on the left and right) and a welding lifting rack 24 (located between the two rails) in the vertical direction, and two welding lifting slides 25 (arranged in the left and right directions) are slidably provided on the welding lifting rail 23, and a welding rack lifting structure (conventional structure, driven by the meshing of the rack and the gear) cooperating with the welding lifting rack 24 is provided on the welding lifting slide 25. A welding cylinder 22 is provided on the outer side of the welding lifting slide 25 in the left and right directions, and a welding horizontal rail 26 is provided on the inner side (front side or rear side) in the left and right directions, and a welding horizontal slide 27 is slidably provided on the welding horizontal slide 26, and a welding gun 21 is fixed on the welding horizontal slide 27, and the inner end of the telescopic rod of the welding cylinder 22 is fixedly connected to the welding horizontal slide 27. A positioning photoelectric sensor 28 is provided on the welding horizontal slide 27 and is located in front of or behind the welding gun 21 along the left and right directions (used for positioning, and then controlling the welding rack lifting structure, which is a conventional structure and is directly opposite to the weld). A wire feeding structure that can move up and down with the welding gun 21 is provided on the vertical beam of the gantry welding frame 20 and is located on the outside of the welding gun 21 (used to feed welding wire into the welding gun 21, which is a conventional structure). Specifically, a follow-up lifting slide and a follow-up rack are provided on the outside of the vertical beam of the gantry welding frame 20 in the vertical direction, a follow-up lifting slide is slidably provided on the follow-up lifting slide, a rack walking structure that cooperates with the follow-up rack is provided on the follow-up slide, and a wire feeding mechanism is provided on the follow-up slide. The wire feeding mechanism can completely follow the movement of the welding gun 21, or it can only move to a certain position to be responsible for feeding wire to the welding gun 21 within a certain area.

[0055] Among them, see Fig.10In the embodiment of the present invention, the front side of the vertical beam of the gantry cutting machine frame 30 is provided with a section lifting slide rail 37 (specifically composed of two slide rails arranged side by side on the left and right) and a section lifting rack 38 (set between the two slide rails) in the vertical direction. A section lifting slide 39 (set in the left and right direction) is slidably provided on the section lifting slide rail 37, and a section rack lifting structure cooperating with the section lifting rack 38 is provided on the section lifting slide 39. Specifically, a gear meshing with the section lifting rack 38 is provided on the section rack lifting structure along the front-back direction and it is driven by a servo motor. Its structure is a common structure and a detailed description is omitted in this embodiment. The end (left end or right end) of the horizontal beam 32 is fixed on the section lifting slide 39, and a section horizontal slide rail 310 is provided on the bottom and top of the horizontal beam along the left and right direction, and a section horizontal rack 318 is provided on the front side along the left and right direction. A section horizontal slide 311 is slidably provided on the two section horizontal slide rails 310 (its upper and lower parts are respectively slidably connected to the section horizontal slide rails 310 on the upper and lower sides, and it is specifically a C-shaped structure open to the rear, covering the horizontal beam 32), and a first rack walking structure (a conventional structure) matching the section horizontal rack 318 is provided on the front side of the section horizontal slide 311, and an arc guide plate 33 is provided at the bottom. The arc guide plate 33 is an arc plate open downward (perpendicular to the conveyor roller 1), and its rear side is fixedly connected to the section horizontal slide 311, and its front side is provided with an arc slide 312 that can make an arc motion on the arc guide plate 33 (covering the front side of the arc guide plate 33). The section plasma cutting gun 34 is provided at the bottom of the arc slide 312, and the gun muzzle at the rear end is bent downward and perpendicular to the steel pipe bundle unit 3. The muzzle of the cutting plasma cutting gun 34 can move in an arc shape to ensure that the front end of the steel tube bundle unit 3 is cut off. The arc guide plate 33 is an arc plate (the central angle is 150-180°, and its diameter is set according to needs) and an arc travel tooth is arranged on its inner edge. The arc slide 312 is slidably arranged on the arc guide plate 33 and a second rack travel structure (a conventional structure driven by a servo motor) is arranged on its front side to cooperate with the arc travel tooth.

[0056] Among them, see Fig.11In the embodiment of the present invention, a drilling lifting slide rail 313 (composed of two slide rails arranged side by side on the left and right) and a drilling lifting rack 314 (arranged between the two slide rails) are provided on the front or rear side of the vertical beam of the gantry drilling frame 31 in the vertical direction. A drilling lifting slide 315 (arranged in the left and right direction) is slidably provided on the drilling lifting slide rail 313. A drilling rack lifting structure (a conventional structure driven by a servo motor) cooperating with the drilling lifting rack 314 is provided on the drilling lifting slide 315. A drilling cylinder 36 is provided on the outer side of the drilling lifting slide 315 in the left and right direction, and a drilling horizontal slide rail 316 is provided on the inner side (bottom) in the left and right direction; a drilling horizontal slide 317 is slidably provided on the drilling horizontal slide rail 316, a drilling plasma cutting gun 35 is fixed on the drilling horizontal slide 317, and the inner end of the telescopic rod of the drilling cylinder 36 is fixedly connected to the drilling horizontal slide 317.

[0057] Furthermore, in the embodiment of the present invention, a flipping mechanism (the structure of which is described in application number CN201821637441.2) is provided between the assembling mechanism and the welding mechanism and located on the conveyor roller 1, and between the welding mechanism and the hole cutting mechanism and located on the conveyor roller 1. The flipping mechanism is used to flip the steel tube bundle 2 by 90° and place it on a steel tube bundle cache rack for caching (when the processing speeds of the mechanisms are not matched). A steel tube bundle cache rack for temporarily storing the steel tube bundle 2 is provided on one side of the flipping mechanism (the steel tube bundle 2 can be placed horizontally in the front-to-back direction).

[0058] Among them, see Figure 1 In the embodiment of the present invention, each upper and left and right sides of the conveyor roller 1 are provided with a walking guide rail (specifically composed of two slide rails arranged side by side on the left and right), and the walking guide rail is arranged in the front-to-back direction. A walking trolley is arranged at the lower end of the left and right sides of each gantry frame (the lower end of the vertical beam), and the walking trolleys on both sides are synchronously driven and can slide in the front-to-back direction on the walking guide rails on the corresponding side. A rack (arranged between the two slide rails) is arranged on the left or right side of each frame (racks can also be arranged on the left and right sides) in the front-to-back direction, and a rack walking structure that cooperates with the rack is arranged on the walking trolley on the corresponding side. Specifically, the rack is arranged horizontally, and a gear meshing with the rack is arranged on the rack walking structure in the vertical direction and is driven by a servo motor. Its structure is a common structure, and a detailed description is omitted in this embodiment.

[0059] Among them, each baffle in this embodiment can block the steel tube bundle unit 3 (such as flipping to the top of the conveyor roller 1) from moving backward when it flips upward (the baffle is rotated on the corresponding frame through the left and right rotating shafts, and is driven by the cylinder through the swing arm, which is preferred) or moves upward (driven by the vertically arranged cylinder), and vice versa, it allows the steel tube bundle unit 3 to pass through (such as flipping to the bottom of the conveyor roller 1).

[0060] The “first”, “second” or “third” in this embodiment only serves to distinguish and has no other special meaning.

[0061] Example 2

[0062] This embodiment provides a method for assembling a straight-line steel pipe bundle, the method comprising the following steps:

[0063] (1) Assembly and spot welding: In the assembly mechanism, when the first steel tube bundle unit moves to the assembly baffle (flips upward), the rear suspension manipulator and the front suspension manipulator move to lift the first steel tube bundle unit upward; continue to input the second steel tube bundle unit to the bottom of the suspended steel tube bundle unit; the top clamping structure (moves downward) and the assembly clamping structure (moving guide rollers move inward) position the two steel tube bundle units; at this time, the gantry assembly frame is evenly distributed and the two spot welding guns on its left and right sides (such as the spot welding guns on the lower side, the two spot welding guns are located on the same horizontal plane) move inward to assemble the two steel tube bundle units (the gantry assembly frame does not move or moves slightly); after the assembly is completed, the top clamping structure (moves upward) and the assembly clamping structure return to their positions; The rear-suspended manipulator and the front-suspended manipulator move (grasp the two ends of the uppermost steel tube bundle unit) to lift the two welded steel tube bundle units upward; continue to input the third steel tube bundle unit to just below the suspended steel tube bundle unit; repeat the above assembly process; after the three steel tube bundle units are combined together, the top clamping structure (moving downward) and the assembly clamping structure (moving the guide roller inward) position the two steel tube bundle units; the gantry assembly frame moves forward and backward to repair weld multiple points of the weld until they meet the requirements (to ensure that they will not separate during lifting and subsequent processing); and so on, repair weld once for every two additional steel tube bundle units; stop when the predetermined number of steel tube bundles is reached, and the steel tube bundle is obtained, and the various structures on it return to their positions and transport the steel tube bundle backward.

[0064] (2) Welding: The assembled steel tube bundle is placed in the welding mechanism. When the steel tube bundle moves to the welding baffle (flipped upward), the welding clamping structure positions the steel tube bundle (the moving guide roller moves inward); the welding gun moves toward the steel tube bundle to weld the steel tube bundle. During welding, the two welding guns on the same side start welding in the middle of the steel tube bundle. The upper welding gun moves upward to weld the upper weld, and the lower welding gun moves downward to weld the lower weld. At the same time, multiple gantry welding frames move forward and backward to cooperate to weld the entire weld (the movement range of adjacent gantry welding frames overlaps slightly). After welding is completed, the structures on it return to their positions and transport the steel tube bundle backward.

[0065] (3) Hole cutting: The welded steel pipe bundle is placed in the hole cutting mechanism. When the steel pipe bundle moves to the hole cutting baffle (flipped upward), the hole cutting clamping structure positions the steel pipe bundle (the moving guide roller moves inward). The gantry cutting frame moves to the cutting position and the cutting plasma cutting gun on it performs cutting processing on the front end of the steel pipe bundle (if the front end of the steel pipe bundle is neat and the length meets the requirements, this step can be omitted). The gantry drilling frame moves to the drilling position and the drilling plasma cutting gun moves inward to perform drilling processing on the steel pipe bundle. After the processing is completed, the various structures on it return to their positions and transport the steel pipe bundle backward.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An assembly device for a straight steel pipe bundle, characterized in that: It comprises a conveying roller conveyor (1) arranged in the front-rear direction and an assembling mechanism, a welding mechanism and a hole cutting mechanism arranged in sequence along the conveying roller conveyor (1); The assembly mechanism comprises an assembly frame, a rear suspension type manipulator (10) at the rear end of the assembly frame and capable of moving up and down, a front suspension type manipulator (11) at the front end of the assembly frame and capable of moving up and down, a plurality of gantry type assembly frames (12) arranged on the assembly frame along a forward and backward sliding direction and located above the conveying roller (1), a top pressing structure on the gantry type assembly frame (12) and capable of moving up and down, an assembly clamping structure on the gantry type assembly frame (12) and located on the left and right sides of the steel pipe bundle (2), an assembly baffle at the rear end of the assembly frame and capable of blocking the steel pipe bundle unit (3) from passing through, and two spot welding structures on the left and right sides of the gantry type assembly frame (12), wherein the front suspension type manipulator (11) and the rear suspension type manipulator (11) are arranged on the assembly frame and are capable of blocking the steel pipe bundle unit (3) from passing through. The hands (10) are arranged directly above the steel pipe bundle (2) and can respectively grasp the front and rear ends of the top of the steel pipe bundle (2); the rear suspension type manipulator (10) is located directly above the assembly baffle; the front suspension type manipulator (11) can move forward and backward; a plurality of gantry type assembly racks (12) are arranged at intervals in front and back and can move forward and backward; two spot welding structures are arranged symmetrically on the left and right sides and are respectively located on the left and right sides of the steel pipe bundle (2); the spot welding structure includes two spot welding guns (13) arranged side by side in an upper and lower direction, and the two spot welding guns (13) are respectively facing the connection points of the three steel pipe bundle units (3) at the bottom; the spot welding guns (13) are arranged in the left and right directions and can be driven by the assembly cylinder (14) to move in the left and right directions; The welding mechanism comprises a welding frame, a plurality of gantry welding frames (20) which are arranged on the welding frame and slide along the front-back direction and are located above the conveying roller (1), a welding baffle at the rear end of the welding frame and capable of blocking the steel pipe bundle (2) from passing through, two welding structures on the left and right sides of the gantry welding frame (20), and a welding clamping structure on the gantry welding frame (20) and located on the left and right sides of the steel pipe bundle (2), the plurality of gantry welding frames (20) are arranged at intervals in front and back and can move forward and backward, the two welding structures are arranged symmetrically in the left and right sides and are respectively located on the left and right sides of the steel pipe bundle (2); the welding structure comprises two welding guns (21) which are arranged side by side in an upper and lower direction and can move up and down; the two welding guns (21) start welding from the weld seam in the middle, one of which moves upward to weld the upper part of the steel pipe bundle (2), and the other moves downward to weld the lower part of the steel pipe bundle (2); the welding gun (21) is arranged in the left and right directions and is driven by a welding cylinder (22) to move in the left and right directions; The hole cutting mechanism comprises a hole cutting frame, at least two gantry frames which are arranged on the hole cutting frame in a forward and backward sliding manner and are located above the conveying roller (1), a hole cutting baffle at the rear end of the hole cutting frame and capable of blocking the steel pipe bundle (2) from passing through, and hole cutting clamping structures on the left and right sides of the gantry frame. The plurality of gantry frames are arranged at intervals in front and back and are all capable of moving forward and backward. The frontmost gantry frame is a gantry cutting frame (30), and the remaining gantry frames are gantry drilling frames (31). An end face cutting structure which can move up and down is provided on the left or right side of the gantry cutting frame (30), and two drilling structures which can move up and down are provided on the left and right sides of the gantry drilling frame (31); the end face cutting structure comprises a hole cutting structure which can move up and down. The invention relates to a horizontal beam (32) movable and arranged in the left-right direction, an arc-shaped guide plate (33) capable of moving left-right on the horizontal beam (32), and a cutting plasma cutting gun (34) capable of moving in an arc shape on the arc-shaped guide plate (33); the cutting plasma cutting gun (34) is arranged in the front-back direction, with its muzzle facing downward and perpendicular to the steel tube bundle unit (3), and can extend into the steel tube bundle unit (3) to cut a plurality of steel tube bundle units (3) to a predetermined length with their front ends flush; two drilling structures are respectively located on the left and right sides of the steel tube bundle (2), and the drilling structure comprises a drilling plasma cutting gun (35) capable of moving up and down and arranged in the left-right direction, and the drilling plasma cutting gun (35) can be driven by a drilling cylinder (36) to move in the left-right direction.

2. The assembly device for the straight steel pipe bundle according to claim 1, characterized in that: An assembly vertical slide rail (15) is provided on the front or rear side of the vertical beam of the gantry type assembly frame (12), and two assembly vertical slide seats (16) are slidably provided on the assembly vertical slide rail (15). The two assembly vertical slide seats (16) are arranged side by side up and down. A lead screw driving structure (17) is provided between the assembly vertical slide seat (16) and the corresponding side of the gantry type assembly frame (12) for driving the assembly vertical slide seat (16) to move up and down. The assembly cylinder (14) is fixed on the outer side of the assembly vertical slide seat (16) and a spot welding gun (13) is provided at the inner end of its telescopic rod. The spot welding gun (13) is slidably provided on the assembly vertical slide seat (16) along the left and right directions. The lead screw driving structure (17) is arranged vertically and driven by a servo motor.

3. The assembly device for a straight steel pipe bundle according to claim 1, characterized in that: A front lifting gantry (18) and a rear lifting gantry (19) are respectively arranged at the front and rear ends of the assembly frame and located above the gantry assembly frame (12); the rear suspension manipulator (10) is arranged on the rear lifting gantry (19) and a first lifting structure is arranged therebetween; the front suspension manipulator (11) is arranged on the front lifting gantry (18) and a second lifting structure and a forward and backward moving structure are arranged therebetween so that the front suspension manipulator (11) can move forward and backward and up and down; the forward and backward moving structure is arranged on the front lifting gantry (18) so as to be movable forward and backward; the second lifting structure can move upward and downward; The front suspension manipulator (11) is arranged on the front-rear moving structure for downward movement, and the front suspension manipulator (11) is arranged at the lower end of the second lifting structure; the front suspension manipulator (11) includes a front gripper which opens backward and can slide forward and backward at the lower end of the second lifting structure, and a front driving cylinder which is between the front gripper and the second lifting structure and can drive the front gripper to slide forward and backward; the rear suspension manipulator (10) includes a rear gripper which opens forward and can slide forward and backward at the lower end of the first lifting structure, and a rear driving cylinder which is between the rear gripper and the first lifting structure and can drive the rear gripper to slide forward and backward, and the front gripper and the rear gripper are both U-shaped structures arranged forward and backward.

4. The assembly device for a straight steel pipe bundle according to claim 1, characterized in that: The top clamping structure is located directly above the steel tube bundle (2), and comprises a top guide roller (120) arranged in the left-right direction and capable of pressing on the top of the steel tube bundle (2), a fixed small side roller (110) arranged vertically and pressed on the left or right side of the top steel tube bundle unit (3), a movable small side roller (111) arranged vertically and capable of pressing on the other side of the top steel tube bundle unit (3), and a top driving cylinder (112) for moving the movable small side roller (111) left and right; two clamping slide rails are arranged vertically on the inner sides of the two vertical beams of the gantry type assembly frame (12); the two clamping slide rails are symmetrically arranged left and right and a lifting frame (113) is arranged between them; the lifting frame (113) is slidably arranged on the clamping slide rail and two fixed plates (114) are arranged on the left and right sides of its lower end in the vertical direction; the top guide roller The left and right ends of (120) are arranged on the fixed plate (114) on the corresponding side, the upper end of the fixed small side roller (110) is arranged at the bottom of the fixed plate (114) on the left or right side, the outer side of the fixed plate (114) on which the fixed small side roller (110) is fixed is provided with a top driving cylinder (112) along the left and right directions, the outer end of the telescopic rod of the top driving cylinder (112) is provided with a first movable plate (115), the outer side of the fixed plate (114) on the other side is provided with a second movable plate (116), the upper end of the movable small side roller (111) is arranged at the bottom of the second movable plate (116), at least one sliding rod (117) is provided between the second movable plate (116) and the first movable plate (115) along the left and right directions, and the sliding rod (117) can slide left and right and is arranged on the lifting frame (113).

5. The assembly device for the straight steel pipe bundle according to claim 4, characterized in that: The assembly clamping structure comprises a fixed large side roller (118) arranged vertically and pressed against the left or right side of the steel tube bundle (2), a movable large side roller (119) arranged vertically and capable of pressing against the other side of the steel tube bundle (2), and a clamping drive cylinder for moving the movable large side roller (119) left and right; the movable small side roller (111) and the movable large side roller (119) are located on the same side; the fixed large side roller (118) and the movable large side roller (119) are both formed by the steel tube bundle unit ( 3) to the upper part of the third steel tube bundle unit (3); the fixed large side roller (118) is arranged on the vertical beam on the corresponding side of the gantry type assembly frame (12) through a fixed arm; the movable large side roller (119) is arranged at the front end or rear end of the swing arm; the other end of the swing arm is rotatably arranged on the vertical beam on the other side of the gantry type assembly frame (12) through a vertically arranged rotating shaft, and a clamping drive cylinder is arranged between the middle part and the gantry type assembly frame (12) along the left and right directions.

6. The assembly device for a straight steel pipe bundle according to claim 1, characterized in that: A welding lifting slide rail (23) and a welding lifting rack (24) are provided on the front or rear side of the vertical beam of the gantry welding frame (20) in the vertical direction. Two welding lifting slide seats (25) are slidably provided on the welding lifting slide rail (23). The welding lifting slide seat (25) is provided with a welding rack lifting structure that cooperates with the welding lifting rack (24). A welding cylinder (22) is provided on the outer side of the welding lifting slide seat (25) in the left and right directions, and a welding horizontal slide rail (26) is provided on the inner side thereof in the left and right directions. A welding horizontal slide (27) is slidably provided on the slide rail (26), the welding gun (21) is fixed on the welding horizontal slide (27), the inner end of the telescopic rod of the welding cylinder (22) is fixedly connected to the welding horizontal slide (27), and a positioning photoelectric sensor (28) is provided on the welding horizontal slide (27) and located directly in front of or directly behind the welding gun (21) in the left and right directions; a wire feeding structure capable of moving up and down with the welding gun (21) is provided on the vertical beam of the gantry welding frame (20) and located on the outer side of the welding gun (21).

7. The assembly device for a straight steel pipe bundle according to claim 1, characterized in that: The front side of the vertical beam of the gantry-type cutting machine frame (30) is provided with a section lifting slide rail (37) and a section lifting rack (38) in the vertical direction, and a section lifting slide seat (39) is slidably provided on the section lifting slide rail (37), and a section rack lifting structure cooperating with the section lifting rack (38) is provided on the section lifting slide seat (39); the end of the horizontal beam (32) is fixed on the section lifting slide seat (39), and the bottom and top of the horizontal beam are provided with section horizontal slide rails (310) in the left and right directions, and the front side of the horizontal beam is provided with a section horizontal rack (318) in the left and right directions; the two section horizontal slide rails (310) are slidably provided with section horizontal slide seats (311), and the front side of the section horizontal slide seat (311) is provided with a section rack cooperating with the section The first rack running structure cooperates with the horizontal rack (318) and an arc-shaped guide plate (33) is provided at the bottom of the first rack running structure; the arc-shaped guide plate (33) is a downwardly open arc-shaped plate, the rear side of which is fixedly connected to the horizontal section slide (311), and the front side of which is provided with an arc-shaped slide (312) capable of performing arc-shaped movement on the arc-shaped guide plate (33); the section plasma cutting gun (34) is arranged at the bottom of the arc-shaped slide (312), and the muzzle at the rear end is bent downward and perpendicular to the steel tube bundle unit (3); the arc-shaped guide plate (33) is an arc plate and an arc-shaped running tooth is provided on the inner edge thereof; the arc-shaped slide (312) is slidably arranged on the arc-shaped guide plate (33), and the front side of the arc-shaped slide is provided with a second rack running structure cooperating with the arc-shaped running tooth.

8. The assembly device for a straight steel pipe bundle according to claim 1, characterized in that: A drilling lifting slide rail (313) and a drilling lifting rack (314) are provided on the front or rear side of the vertical beam of the gantry drilling frame (31) in the vertical direction; a drilling lifting slide rail (313) is slidably provided with a drilling lifting slide seat (315); and a drilling rack lifting structure cooperating with the drilling lifting rack (314) is provided on the drilling lifting slide seat (315); a drilling cylinder (36) is provided on the outer side of the drilling lifting slide seat (315) in the left and right directions, and a drilling horizontal slide rail (316) is provided on the inner side of the drilling lifting slide seat (315) in the left and right directions; a drilling horizontal slide seat (317) is slidably provided on the drilling horizontal slide rail (316); the drilling plasma cutting gun (35) is fixed on the drilling horizontal slide seat (317), and the inner end of the telescopic rod of the drilling cylinder (36) is fixedly connected to the drilling horizontal slide seat (317).

9. The assembly device for a straight steel pipe bundle according to claim 1, characterized in that: A turnover mechanism is provided between the assembling mechanism and the welding mechanism and located on the conveying roller (1), and between the welding mechanism and the hole cutting mechanism and located on the conveying roller (1). A steel pipe bundle buffer rack for temporarily storing the steel pipe bundle (2) is provided on one side of the turnover mechanism.

10. An assembly method using the assembly device for the straight steel tube bundle according to claim 1, characterized in that: The method comprises the following steps: (1) Assembly and spot welding: In the assembly mechanism, when the first steel tube bundle unit moves to the assembly baffle, the rear suspension manipulator and the front suspension manipulator move to lift the first steel tube bundle unit upward; continue to input the second steel tube bundle unit to the bottom of the suspended steel tube bundle unit; the top clamping structure and the assembly clamping structure position the two steel tube bundle units; at this time, the gantry assembly frame is evenly distributed and the two spot welding guns on both sides move inward to assemble the two steel tube bundle units; after the assembly is completed, the top clamping structure and the assembly clamping structure return to their positions; the rear suspension manipulator and the front suspension manipulator move to lift the two welded steel tube bundle units upward; continue to input the third steel tube bundle unit to the bottom of the suspended steel tube bundle unit; repeat the above assembly process; after the three steel tube bundle units are combined together, the gantry assembly frame moves forward and backward to perform repair welding on multiple points of the weld until they meet the requirements; and so on, repair welding is performed once for every two additional steel tube bundle units; until the predetermined number of units is reached, the steel tube bundle is obtained; (2) Welding: The assembled steel pipe bundle is placed in the welding mechanism. When the steel pipe bundle moves to the welding baffle, the welding clamping structure positions the steel pipe bundle. The welding gun moves toward the steel pipe bundle to weld the steel pipe bundle. During welding, the two welding guns on the same side start welding in the middle of the steel pipe bundle. The upper welding gun moves upward to weld the upper weld, and the lower welding gun moves downward to weld the lower weld. At the same time, multiple gantry welding frames move forward and backward to cooperate to weld the entire weld. (3) Hole cutting: The welded steel pipe bundle is placed in the hole cutting mechanism. When the steel pipe bundle moves to the hole cutting baffle, the hole cutting clamping structure positions the steel pipe bundle. The gantry cutting frame moves to the cutting position and the cutting plasma cutting gun thereon performs cutting processing on the front end of the steel pipe bundle. The gantry drilling frame moves to the drilling position and the drilling plasma cutting gun moves inward to perform drilling processing on the steel pipe bundle.

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