Gantry welding tool

Abstract

The utility model discloses a gantry welding tool which comprises a machine frame, a top plate, a sliding rail seat, a welding driving assembly, a person standing platform lifting mechanism, a welding gun assembly, a carrying wheel support and a workpiece carrying wheel, the top plate is fixedly installed on the top, and a first driving motor is fixedly installed on the carrying wheel support. And the moving mechanism driven by the servo motor and the welding executing mechanism controlled automatically achieve automatic operation in the welding process, manual intervention is reduced, and the production efficiency is improved. Through testing, compared with a traditional tool, the production efficiency is improved by more than 30%. And an operator can quickly reach the welding positions of different products through the standing platform lifting mechanism, so that the working intensity of welders is reduced, and the observation of the equipment in the welding process is more convenient. And the qualification rate and the production efficiency are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to welding equipment technical field especially designs a gantry welding tool. BACKGROUND

[0002] With the continuous development of manufacturing industry, such as automobile manufacturing, engineering machinery, shipbuilding, aerospace and other industries, higher requirements are put forward for welding quality and efficiency. For example, the welding of a large number of parts in automobile manufacturing requires high precision and high speed to meet the mass production line; the welding of large structural parts in shipbuilding requires the equipment to have sufficient carrying and operating range capacity, and traditional simple welding equipment is difficult to meet these complex needs, prompting the development of gantry welding tool.

[0003] Welding precision requirement improvement: in high-end manufacturing field, such as aerospace parts welding, the requirement for welding precision has reached a very high level. The traditional welding method has many manual operation influencing factors, and the precision is difficult to guarantee. The gantry welding tool can realize accurate control of welding position, angle and other parameters through precise mechanical structure design and control system, reduce welding error and meet high-precision welding demand.

[0004] Automation production trend: under the wave of industrial automation, enterprises pursue the automation of production process in order to improve production efficiency, reduce labor cost and reduce the influence of human factors on product quality. The gantry welding tool can integrate automatic control system to realize automatic operation of welding process, such as automatic positioning, automatic welding parameter adjustment and automatic welding path planning, which meets the trend of automation production.

[0005] Workpiece diversity demand: the shape, size and material of workpiece are different in actual production. For example, large frame structural parts and small precision parts in engineering machinery need welding tool with good adaptability. The gantry welding tool can meet the welding demand of different types of workpieces through the design of adjustable clamping mechanism and diversified welding execution mechanism, improve the versatility and flexibility of the equipment.

[0006] Welding quality stability requirement: in order to ensure the consistency and reliability of product quality, the stability of welding quality is very important. The gantry welding tool can reduce the fluctuation in the welding process through precise parameter control, stable mechanical structure and advanced welding process execution, ensure the stability of welding quality and reduce the rate of defective products.

[0007] Traditional carrying equipment has low carrying efficiency, it is difficult to meet the demand of multiple stations at the same time, it is inconvenient to observe the welding of large cylinder, it is inconvenient to stand on the platform, the positioning precision is insufficient to affect the welding quality, etc. SUMMARY

[0008] The utility model wants to solve the technical problem: provide a kind of gantry welding tool for the longitudinal seam of cylindrical workpiece outside, ring seam in pressure vessel manufacturing process, to solve the problem of low welding precision, low degree of automation and poor adaptability to different workpieces in prior art. Improve the efficiency of welding delivery, improve positioning accuracy, optimize work flow, facilitate equipment debugging, personnel observation and other purposes.

[0009] In order to solve the above technical problems, the present application is realized by the following technical scheme: a gantry welding tool, comprising a rack, a top plate, a slide rail seat, a welding drive assembly, a standing platform lifting mechanism, a welding gun assembly, a load wheel support and a workpiece load wheel, the top plate is fixedly installed on the top, four load wheel supports are fixedly arranged on the ground on the side of the rack in a rectangular distribution, the workpiece load wheel is rotatably installed on the load wheel support, a first drive motor is fixedly installed on the load wheel support, the output shaft of the first drive motor is in transmission connection with the central shaft of the workpiece load wheel, the slide rail seat is fixedly installed on the front and rear sides of the rack, a first linear slide rail and a first rack in the left-right direction are fixedly installed on the slide rail seat, a second linear slide rail and a second rack in the left-right direction are also fixedly installed on the rack;

[0010] The welding drive assembly is composed of a flat plate, a support seat, a first wheel support, a first supporting wheel, a first sliding block, a welding gun seat beam and an XZ-axis motor drive mechanism, the flat plate and the first sliding block are fixedly installed on the crossbeam of the X-axis of the upper XZ-axis motor drive mechanism, the first sliding block is also slidably installed on the second linear slide rail, the second gear of the X-axis electric walking trolley is in meshing transmission connection with the second rack, the welding gun seat beam is fixedly installed on the Y-axis execution sliding block of the XZ-axis motor drive mechanism, the welding gun assembly is fixedly installed on the welding gun seat beam, the support seat is fixedly installed on the flat plate, the first wheel support is fixedly installed on the support seat, the first supporting wheel is rotatably installed on the first wheel support, and the first supporting wheel is placed on the top surface of the top plate.

[0011] The standing platform lifting mechanism is composed of an XYZ-axis motor drive mechanism, a second wheel support, a second supporting wheel, a second sliding block, a standing platform and a guardrail, the second sliding block is fixedly installed on the top of the crossbeam of the X-axis of the XYZ-axis motor drive mechanism, the second sliding block is also slidably installed on the first linear slide rail, the first gear of the X-axis electric walking trolley of the XYZ-axis motor drive mechanism is in meshing transmission connection with the first rack, the standing platform is fixedly installed on the Y-axis crossbeam of the XYZ-axis motor drive mechanism, the guardrail is fixedly installed on the standing platform in full enclosure, the second wheel support is fixedly installed on the Z-axis longitudinal beam of the XYZ-axis motor drive mechanism, the second supporting wheel is fixedly installed on the second wheel support, and the second supporting wheel is placed on the ground.

[0012] Preferably, the top plate is fixedly provided with left-right direction reinforcing guide rails, and the first supporting wheel is arranged on the reinforcing guide rails.

[0013] Preferably, the rack is further fixedly provided with an inspection ladder.

[0014] Preferably, the guardrail is provided with a guardrail door with a lock, and the guardrail is provided with a circular arc surface structure expanding outward at the top near the side of the load wheel support.

[0015] Compared with the prior art, the welding device has the advantages that:

[0016] The automation degree is improved: the moving mechanism driven by the servo motor and the automatic control welding execution mechanism realize the automatic operation of the welding process, reduce the manual intervention, and improve the production efficiency.

[0017] The adaptability is enhanced: the workpiece carrier wheel adapts to the clamping requirements of different workpieces, and reduces the production cost and time cost.

[0018] The welding station is increased; a plurality of welding stations can be increased on the rack through the modular tooling, and the production efficiency is greatly improved.

[0019] The observability of the equipment is enhanced: the operator can quickly reach the welding position of different products through the standing platform lifting mechanism, reduces the working strength of the welder, and is more convenient for the observation of the welding process of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be further described below in combination with the drawings.

[0021] Fig. 1 It is the perspective view of the utility model.

[0022] Fig. 2 It is the perspective view of the welding driving assembly.

[0023] Fig. 3 It is the perspective view of the standing platform lifting mechanism. DETAILED DESCRIPTION

[0024] The utility model will be further described below in combination with the drawings.

[0025] For example, Figs. 1 to 3The illustrated gantry welding tool includes a rack 1, a top plate 12, a slide rail seat 2, a welding drive assembly 5, a standing platform lifting mechanism 6, a welding gun assembly 7, a load wheel support 91 and a workpiece load wheel 92, the top plate 12 is fixedly installed on the top of 1, four load wheel supports 91 are fixedly arranged on the ground on the side of the rack 1 in a rectangular distribution, the workpiece load wheel 92 is rotatably installed on the load wheel support 91 through the middle shaft, a first drive motor is fixedly installed on the load wheel support 91, the output shaft of the first drive motor is in transmission connection with the middle shaft of the workpiece load wheel 92, the slide rail seat 2 is fixedly installed on the front and rear sides of the rack 1, a first linear slide rail and a first rack in the left-right direction are fixedly installed on the slide rail seat 2, a second linear slide rail 8 and a second rack in the left-right direction are also fixedly installed on the rack 1;

[0026] The welding drive assembly 5 is composed of a flat plate 51, a support seat 52, a first wheel support 53, a first supporting wheel 54, a first sliding block 55, a welding gun seat beam 56 and an XZ-axis motor drive mechanism 57, the flat plate 51 and the first sliding block 55 are fixedly installed on the X-axis crossbeam of the XZ-axis motor drive mechanism 57, the first sliding block 55 is also slidably installed on the second linear slide rail 8, the second gear of the X-axis electric walking trolley is in meshing transmission connection with the second rack, the welding gun seat beam 56 is fixedly installed on the Y-axis execution sliding block of the XZ-axis motor drive mechanism 57, the welding gun assembly 7 is fixedly installed on the welding gun seat beam 56, the support seat 52 is fixedly installed on the flat plate 51, the first wheel support 53 is fixedly installed on the support seat 52, the first supporting wheel 54 is rotatably installed on the first wheel support 53, the first supporting wheel 54 is placed on the top surface of the top plate 12, and the first supporting wheel 54 supports the electric control assembly of the flat plate 51, so that the flat plate 51 is in a horizontal stable state.

[0027] The standing platform lifting mechanism 6 is composed of an XYZ-axis motor drive mechanism 61, a second wheel support 62, a second supporting wheel 63, a second sliding block 64, a standing platform 65 and a guardrail 66, the second sliding block 64 is fixedly installed on the top of the X-axis crossbeam of the XYZ-axis motor drive mechanism 61, the second sliding block 64 is also slidably installed on the first linear slide rail, the first gear of the X-axis electric walking trolley of the XYZ-axis motor drive mechanism 61 is in meshing transmission connection with the first rack, the standing platform 65 is fixedly installed on the Y-axis crossbeam of the XYZ-axis motor drive mechanism 61, the guardrail 66 is fixedly installed on the standing platform 65 in a full enclosure, the second wheel support 62 is fixedly installed on the Z-axis longitudinal beam of the XYZ-axis motor drive mechanism 61, the second supporting wheel 63 is fixedly installed on the second wheel support 62, the second supporting wheel 63 is placed on the ground, and the second supporting wheel 63 forms a supporting effect on the XYZ-axis motor drive mechanism 61, thereby reducing the load force borne by the first linear slide rail.

[0028] When the first supporting wheel 54 is in long-term sliding contact with the top plate 12, the top plate 12 will be abraded, and the first supporting wheel 54 is arranged on the reinforcing guide rail 13, and only the reinforcing guide rail 13 needs to be replaced after being abraded.

[0029] The rack 1 is also fixedly provided with a maintenance ladder 14, so as to facilitate the maintenance personnel to perform maintenance work on the top plate 12.

[0030] The guardrail 66 is provided with a guardrail door with a lock, and the guardrail 66 is provided as a circular arc surface structure expanding outward at the top near one side of the load wheel support 91, so that the welding operator standing on the standing platform 65 needs to lean forward to observe the welding condition of the workpiece 10, and the circular arc surface structure can increase the distance when the welding operator observes while crouching.

[0031] The welding gun assembly 7 is a tank ring seam P+T automatic welding machine, special precise welding equipment, which can be used for ring seam welding of various container cylinders, pipes and other workpieces. Without opening a bevel, P+T double-gun welding process is adopted, that is, single-gun plasma (PAW) without wire is used for bottoming, single-sided welding and double-sided forming are realized, and TIG is used to add cold wire to the welded seam after bottoming to fill and cover the surface, so that a beautiful welded seam is obtained. Four welding stations are arranged on the rack 1, which greatly increases the production efficiency. The welded product is quickly transported to each welding station by a trolley or a conveying line, and each welding station is only responsible for one same welding seam and process, which greatly increases the welding efficiency. When a problem occurs in one station, the welding drive assembly 5 and the welding gun assembly 7 of another station can be moved to this station to complete the task of this station, avoiding the stagnation of the production line.

[0032] The left-right direction (i.e. length direction) of the rack 1 is the X axis, the front-rear direction (i.e. width direction) of the rack 1 is the Y axis, and the up-down direction (i.e. height direction) of the rack 1 is the Z axis. The cylindrical workpiece 10 is loaded onto the same group of workpiece carrying wheels 92. When the outer longitudinal seam welding operation of the cylindrical workpiece 10 is performed, the first driving motor on the carrying wheel support 91 drives the workpiece carrying wheel 92 to rotate to adjust the angle of the cylindrical workpiece 10 and then stop, so that the welding position of the cylindrical workpiece 10 corresponds to the welding gun assembly 7. When the ring seam of the cylindrical workpiece 10 is welded, the first driving motor on the carrying wheel support 91 drives the workpiece carrying wheel 92 to rotate, and the workpiece carrying wheel 92 synchronously drives the cylindrical workpiece 10 to rotate at a constant speed. The welding driving assembly 5 and the man platform lifting mechanism 6 are both connected to the control module through a circuit, and the control module is also connected to a welding control box, a welding remote controller, and a welding touch screen through a circuit, so as to facilitate the operation of the welder. The X-axis electric walking trolley of the welding driving assembly 5 drives the welding gun assembly 7 to move along the left-right direction of the rack 1, the XZ-axis motor driving mechanism 57 of the welding driving assembly 5 drives the welding gun assembly 7 to move along the front-rear and up-down directions of the rack 1, so as to realize the driving welding gun position adjustment, and the welding gun assembly 7 performs the welding operation on the cylindrical workpiece 10 on the carrying wheel support 91. The X-axis electric walking trolley of the man platform lifting mechanism 6 drives the XYZ-axis motor driving mechanism 61 to move along the left-right direction of the rack 1, and the XYZ-axis motor driving mechanism 61 drives the man platform 65 to move along the front-rear and up-down directions of the rack 1, so as to facilitate the observation of the welder.

Claims

1. A gantry welding fixture, characterized in that: The assembly includes a frame (1), a top plate (12), a slide rail seat (2), a welding drive assembly (5), a standing platform lifting mechanism (6), a welding torch assembly (7), a wheel support (91), and a workpiece wheel (92). The top plate (12) is fixedly installed on the top of the frame (1). The four wheel supports (91) are arranged in a rectangular distribution and fixedly installed on the ground on the side of the frame (1). The workpiece wheel (92) is rotatably installed on the wheel support (91) through its central axis. A first drive motor is fixedly installed on the wheel support (91). The output shaft of the first drive motor is connected to the central axis of the workpiece wheel (92). The slide rail seat (2) is fixedly installed on the front and rear sides of the frame (1). A first linear slide rail and a first rack in the left and right directions are fixedly installed on the slide rail seat (2). A second linear slide rail (8) and a second rack in the left and right directions are also fixedly installed on the frame (1). The welding drive assembly (5) consists of a plate (51), a support base (52), a first wheel support (53), a first support wheel (54), a first slider (55), a welding torch support beam (56), and an XZ axis motor drive mechanism (57). The plate (51) and the first slider (55) are both fixedly mounted on the X-axis crossbeam of the upper XZ axis motor drive mechanism (57). The first slider (55) is also slidably mounted on the second linear slide rail (8). The second gear of the X-axis electric walking trolley is meshed with the second rack for transmission. The welding torch support beam (56) is fixedly mounted on the Y-axis execution slider of the XZ axis motor drive mechanism (57). The welding torch assembly (7) is fixedly mounted on the welding torch support beam (56). The support base (52) is fixedly mounted on the plate (51). The first wheel support (53) is fixedly mounted on the support base (52). The first support wheel (54) is rotatably mounted on the first wheel support (53). The first support wheel (54) is placed on the top surface of the top plate (12). The lifting mechanism (6) of the standing platform consists of an XYZ axis motor drive mechanism (61), a second wheel bracket (62), a second support wheel (63), a second slider (64), a standing platform (65), and a guardrail (66). The second slider (64) is fixedly installed on the top of the X-axis crossbeam of the XYZ axis motor drive mechanism (61). The second slider (64) is also slidably installed on the first linear slide rail. The first gear of the X-axis electric walking trolley of the XYZ axis motor drive mechanism (61) is meshed with the first rack for transmission. The standing platform (65) is fixedly installed on the Y-axis crossbeam of the XYZ axis motor drive mechanism (61). The guardrail (66) is fixedly installed on the standing platform (65) in a fully enclosed manner. The second wheel bracket (62) is fixedly installed on the Z-axis longitudinal beam of the XYZ axis motor drive mechanism (61). The second support wheel (63) is fixedly installed on the second wheel bracket (62). The second support wheel (63) is placed on the ground.

2. The gantry welding fixture according to claim 1, characterized in that: A left-right reinforcing guide rail (13) is fixedly installed on the top plate (12), and the first support wheel (54) is placed on the reinforcing guide rail (13).

3. The gantry welding fixture according to claim 1, characterized in that: A maintenance ladder (14) is also fixedly installed on the frame (1).

4. The gantry welding fixture according to claim 1, characterized in that: The guardrail (66) has a lockable guardrail gate, and the side of the guardrail (66) near the wheel support (91) is configured as an arc surface structure with the top expanding outward.

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