WO2011066707A1

WO2011066707A1 - Plasma arc plane overlay welding machine

Info

Publication number: WO2011066707A1
Application number: PCT/CN2010/000556
Authority: WO
Inventors: 陈春明
Original assignee: Chen Chunming
Priority date: 2009-12-04
Filing date: 2010-04-22
Publication date: 2011-06-09
Also published as: CN101733535A

Abstract

A plasma arc plane overlay welding machine has a frame with a portal frame structure including columns (1,11) and a beam (2), and a corresponding welding platform (3). The frame can move relative to the welding platform (3) in longitudinal direction driven by a longitudinal traveling motor. The lateral surface of the beam (2) of the frame is provided with a transverse slide plate (9) capable of transversely moving or swinging driven by a transverse traveling motor (15). The outside surface of the transverse slide plate (9) is provided with a lifting welding gun bracket (6). The welding gun bracket (6) holds a plasma welding gun (10) pointing to the welding platform (3). The height of the plasma welding gun (10) is adjustable by a lifting motor (7). The plasma welding gun (10) has a direct-current welding power supply, a working gas and a cooling water source. A lead wire connects each motor to a control box so as to realize automatic control by the electric self-control device. The plasma arc plane overlay welding machine has structure with rational design, satisfies various operating needs of the welding work, and realizes high-efficiency automatic production.

Description

Plasma arc plane surfacing machine

Technical field

The invention belongs to the technical field of welding equipment, and particularly relates to a plasma arc plane surfacing machine.

Background technique

In the article "High-quality and high-abrasion surfacing technology" published in the second issue of the welding magazine, No. 5, 1999, the composite material uses the plasma arc surfacing technology to obtain a composite weld overlay layer with high wear resistance. It is an important development of plasma arc surfacing application technology. The quality of the composite surfacing layer obtained by the plasma arc surfacing technology is stable and reliable. Under the condition of severe wear, the wear resistance of the composite surfacing layer is particularly prominent, because the stacking layer and the surface of the workpiece to be protected are metallurgically bonded. Therefore, it has a high bonding strength and can meet certain impact resistance requirements.

In recent years, in-depth research on plasma arc surfacing technology for composite materials has been carried out at home and abroad, and significant progress has been made. However, in some aspects of the process equipment of composite plasma arc surfacing, the development is relatively lagging. For example, for the welding equipment of stacking products with large-area planar shape, there is no mature and reliable plasma arc plane surfacing machine. Production, plane surfacing products are still mainly produced by hand, not only the welding quality is difficult to guarantee, but also the production efficiency is low, and the operator is labor intensive.

Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide a plasma arc plane surfacing machine for use in a planar shaped composite product product which utilizes a plasma arc surfacing process to achieve efficient automated production.

The invention is realized by the following technical solutions: a plasma arc plane surfacing machine, a frame of a gantry structure comprising a column and a beam as a main body, and a welding platform arranged at a corresponding position of the frame, driven by a longitudinal traveling motor, The frame and the welding platform can be moved in parallel with respect to the longitudinal direction; a lateral sliding plate driven by a laterally moving motor can be laterally moved or oscillated on the side of the beam of the frame, and a lifting torch holder can be arranged on the outer side of the lateral sliding plate, in the welding torch A plasma directed to the soldering platform is mounted on the bracket The welding torch is adjustable in height position of the plasma torch driven by the lifting motor. The plasma torch is also equipped with DC welding power source, working gas and cooling water source. The wires connecting the motors lead to the control box and are automatically controlled by the electric automatic control device.

The welding platform is fixedly horizontally arranged, and the traveling roller is respectively arranged on the lower part of the two pillars of the frame, the traveling roller is seated on two horizontally laid rails, and the two longitudinal traveling motors are connected to the rack and pinion through the reducer The drive is fixed, the rack is fixed on the outer side of the guide rail, and the longitudinal travel motor is a variable frequency motor or a servo motor.

The lateral sliding plate is supported by two linear guides on the outer side of the beam, and a lateral moving motor and a speed reducer are mounted on the outer side of the transverse sliding plate, and the output gear of the reducer projects rearward, and is horizontally mounted on the outer side of the beam. The racks form a rack and pinion drive, and the laterally moving motor uses a servo motor.

The cymbal gun bracket comprises a lifting slide plate supported on the horizontal sliding plate by a linear slide rail in an up-and-down direction on the outer side surface of the lateral sliding plate, the plasma squirt gun is mounted on the lower part of the front surface of the lifting slide plate, and the upper part of the lifting slide plate is mounted with the lifting plate The motor and the reducer, the output gear of the reducer protrudes rearward, and the rack-and-pinion drive is formed with the rack in the up and down direction mounted on the cross slide, and the lift motor uses a servo motor.

The number of the welding torch holders mounted on the outer side of the lateral sliding plate and the plasma welding torch mounted on the welding gun holder may be two or three or four, and the parallel partitions are respectively mounted on the outer side of the lateral sliding plate.

The electrical automatic control device is placed in the control box, and comprises an electronic touch screen, a programmable logic controller, a frequency conversion controller, an automatic arc voltage control device and an input and output device, which are electrically connected.

The DC power supply is a high power IGBT inverter power supply.

Advantages and advantages of the present invention:

The mechanical parts of the invention, such as the frame, the splicing platform, the horizontal sliding plate, the welding gun bracket and the like, have reasonable structural design, the longitudinal walking of the frame, the lateral movement or swing of the horizontal sliding plate, and the lifting and lowering of the plasma welding torch are all adopted. With the motor, reducer and gear rack drive, the technology is mature and reliable.

The electrical control part of the invention comprises an electronic touch screen, a programmable logic controller, a frequency conversion controller, an automatic arc voltage control device and an input and output device, which can realize control of each moving component and control of the connection process parameters, and meet the connection Various operational requirements during the operation.

The invention adopts a plasma welding torch and is equipped with a high-power DC welding power source, which can meet the requirements of plasma arc surfacing welding of planar shape composite materials, and is provided with several plasma smashing guns. For different workpieces to be processed, each plasma squirt gun can be separately used. It can also be used with several plasma torches for high efficiency production.

In short, the plasma arc plane surfacing machine with many of the above advantages can achieve efficient and automatic production, reduce labor intensity, improve working conditions, ensure product quality, and improve labor productivity.

DRAWINGS

Figure 1 is a schematic view of the main structure of the present invention.

2 is a schematic view showing the front structure of the welding gun holder of the present invention.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

The plasma arc plane surfacing machine shown in FIG. 1 comprises a frame of a gantry structure composed mainly of columns 1, 11 and a beam 2, and a welding platform 3 disposed at a corresponding position of the frame, and a longitudinal traveling motor (placed Driven by the column, not shown in the figure, the frame and the welding platform 3 can be moved parallel to the longitudinal direction, that is, forward or backward; on the side of the beam 2 of the frame, the lateral movement motor 15 can be driven to move laterally or swing. a lateral slide 9 is provided on the outer side of the lateral slide 9 with a liftable welding gun bracket 6 on which a plasma burr 10 directed to the welding platform 3 is mounted, and the plasma torch 10 is driven by the lifting motor 7. position adjustable height, the plasma torch 10 is also provided with a DC power supply connected defended working gas and cooling water, with a flexible protective sheath and the introduction or extraction .5; connecting wire to each motor control _t.. The box is automatically controlled by an electrical control unit. The welding platform 3 in Fig. 1 is fixedly horizontally arranged, and a T-shaped groove is formed on the platform. The traveling rollers 16 and 14 are respectively mounted on the lower portions of the two pillars 1 and 11 of the frame, and the traveling rollers 16 and 14 are respectively seated at On the two horizontally laid guide rails 17 and 13, two longitudinal travel motors are connected via a reduction gear to the rack and pinion drive, and the racks 18 and 12 are fixed to the outside of the guide rails 17 and 13, respectively. The longitudinal travel motor is a variable frequency motor or a servo motor.

The lateral slide 9 is supported by two linear guides 4 on the outer side of the cross member 2, and a lateral movement motor 15 and a speed reducer (not shown) are mounted on the outer side of the lateral slide 9, and the output gear of the reducer projects rearward The rack gear is horizontally mounted on the outer side of the beam (covered by the lateral slide 9 and not shown) to form a rack and pinion drive, and the laterally moving motor 15 is a servo motor.

As shown in FIG. 2, the cymbal holder 6 includes a lifting slide 24, and the lifting slide 24 passes through the up-and-down linear slide on the outer side of the lateral slide 9 (covered by the lifting slide 24, not shown). On the 9th, the plasma welding torch. 10 is mounted on the lower part of the front surface of the lifting slide 24 after being fastened by positioning, and the upper part of the lifting slide 24 is equipped with the lifting motor 7 and the speed reducer 8, and the output gear of the speed reducer 8 is extended backward, and installed. The rack in the up and down direction on the cross slide 9 (covered by the elevating slide 24, not shown) forms a rack and pinion drive. The lift motor 7 uses a servo motor. The limit switches 19 and 20 are used to limit the starting and ending positions of the lifting slide 24, and are also the highest and lowest positions of the welding gun holder 6. The plasma squirt 10 is also equipped with inlet pipes 26 and 27, outlet pipes 21 and 22, and a gas supply pipe 23, and the working gas can be argon gas. There is also a terminal block 25 for the lifting motor 7, the limit switches 19 and 20 for wire collection and connection to the control box.

In the present embodiment, the number of the plasma torch holders 6 mounted on the outer side of the lateral slide plate 9 and the plasma burrs 10 mounted on the welding gun holder 6 are four, and the parallel partitions are respectively mounted on the outer side faces of the lateral slide plates 9. Depending on the needs, it can be 1, 2 or 3.

The electrical automatic control device is placed in the control box, including electronic touch screen, programmable logic controller, frequency conversion The controller, the automatic arc voltage control device and the input and output devices are electrically connected. The DC welding power source is a high power IGBT inverter power supply. For example, four 22KW DC power supplies are used to supply four plasma torches. The rated welding current is 300A X 4 and the thickness of the surfacing is 5 mm.

The plasma arc plane surfacing machine of the invention firstly lays the substrate of the workpiece to be welded and the wear-resistant powder block on the splicing platform during operation, and then adjusts the relative position of the plasma smashing gun and the workpiece to be smashed, and controls Set the required connection parameters on the touch screen of the box, such as the size of the welding, the walking speed of the frame, the swing speed of the plasma torch, the width of the weld bead, the width of the bead overlay, etc. Press the start button on the control box. The welding operation can be carried out according to the set procedure, and the plasma torch automatically returns to the starting working point after the operation.

Obviously, the present invention is not limited to the specific structure of the above embodiment, for example, in order to realize the relative longitudinal parallel movement of the frame and the splicing platform, the manner in which the frame is fixed and the welding platform is driven by the longitudinal traveling motor can be used; Numerical control technology can also be used. In other words, any simple modifications, equivalent changes and modifications that do not depart from the technical scope of the invention are still within the scope of the invention.

Claims

WO 2011/066707 Claim PCT/CN2010/000556

A plasma arc plane stacker, comprising: a gantry structure comprising a column and a beam as a main body; and a welding platform disposed at a corresponding position of the frame, driven by the longitudinal traveling motor, the frame The splicing platform can be moved in parallel with respect to the longitudinal direction; a lateral sliding plate driven by a laterally moving motor can be laterally moved or oscillated on the side of the beam of the frame, and a liftable welding gun bracket is arranged on the outer side of the lateral sliding plate, A plasma welding torch directed to the welding platform is mounted on the bracket. The height of the plasma torch is adjustable under the driving of the lifting motor. The plasma torch is also equipped with a DC power supply, a working gas and a cooling water source. The wires connecting the motors lead to the control box. Automatic control is achieved by an electrical automatic control unit.

2 . The plasma arc plane stacker according to claim 1 , wherein: the welding platform is fixedly horizontally arranged, and a walking roller is respectively arranged at a lower part of the two pillars of the frame, and the traveling roller is seated at two. On the horizontally laid rails, two longitudinal traveling motors are connected to the rack and pinion transmission through a speed reducer, and the rack is fixed on the outside of the rail. The longitudinal traveling motor is a variable frequency motor or a servo motor.

The plasma arc plane surfacing machine according to claim 1, wherein: the lateral sliding plate is supported by two linear guide rails on the outer side of the beam, and a lateral moving motor and a speed reducer are mounted on the outer side of the lateral sliding plate. The output gear of the reducer projects rearward, and the rack-and-pinion drive is formed in the horizontal direction of the rack mounted on the outer side of the beam, and the transversely-moving motor uses a servo motor.

The plasma arc plane surfacing machine according to claim 1, wherein: the rifle holder comprises a lifting slide, and the lifting slide is supported on the horizontal sliding plate by a linear sliding rail on an outer side of the lateral sliding plate. The plasma torch is installed at the lower part of the front surface of the lifting slide. The upper part of the lifting slide is equipped with a lifting motor and a speed reducer. The output gear of the speed reducer extends rearward, and the rack gear of the up and down direction mounted on the horizontal sliding plate forms a rack and pinion drive. The lifting motor uses a servo motor.

The plasma arc flat welding machine according to claim 1 or 4, wherein: the number of the welding torch holder mounted on the outer side of the lateral sliding plate and the plasma welding torch mounted on the welding gun holder is Rights request

It is 2 or 3 or 4, and the parallel partitions are respectively mounted on the outer side of the lateral slide.

6 . The plasma arc plane surfacing machine according to claim 1 , wherein: the electrical automatic control device is disposed in a control box, including an electronic touch screen, a programmable logic controller, a frequency conversion controller, and an automatic arc voltage control. 6 . The device and the input and output devices are electrically connected.

The plasma arc plane stacker according to claim 1, wherein the DC power supply is a high power IGBT inverter power supply.