WO2022166526A1

WO2022166526A1 - Intelligent welding device

Info

Publication number: WO2022166526A1
Application number: PCT/CN2022/070888
Authority: WO
Inventors: 张伟; 袁新强
Original assignee: 陕西理工大学
Priority date: 2021-02-06
Filing date: 2022-01-10
Publication date: 2022-08-11
Also published as: LU501608B1; CN112809297A; CN112809297B

Abstract

An intelligent welding device, comprising a welding gun (3), a guide mechanism, a driving mechanism, a clamp (2) mechanism and a control system (11), wherein the welding gun is arranged on the guide mechanism; the driving mechanism is used for driving the welding gun to move along the guide mechanism; the clamp mechanism is used for fixing a workpiece to be welded; the control system is electrically connected to the welding gun, the guide mechanism, the driving mechanism and the clamp mechanism; and the control system is used for controlling the operation of the welding gun, the driving mechanism and the clamp mechanism. The guide mechanism comprises multiple guide blocks (100) and guide wheels (13). The multiple guide wheels can form any guide rail by means of changing the positions of the guide wheels on the guide blocks, and the driving mechanism can move the welding gun along a preset track in the guide mechanism, such that a moving track of the welding gun is parallel to a welding seam so as to complete the welding of any curve or straight welding seam in a plane.

Description

An intelligent welding device

technical field

The invention relates to the technical field of welding devices, in particular to an intelligent welding device.

Background technique

In recent years, my country's manufacturing industry has developed vigorously. Steel has a very important position in the manufacturing industry. my country's steel output ranks first in the world. About one-third of my country's steel products need to be processed by welding. The welding process has the characteristics of low cost and high technology. So far, no process is more commonly used for joining various workpieces than welding. With the advancement of science and technology, welding has gradually evolved from a simple purpose of connecting workpieces to a basic process in industrial production and a manufacturing method for obtaining precise products. The traditional manual welding has long been unable to meet the requirements of the manufacturing quality and function of modern high-tech products, and intelligent welding is the development trend of the times.

For relatively long curve welding, most of the operator will control the movement of the guide rail trolley and then control the movement of the welding torch on the trolley. If the length of the guide rail meets a certain length, the welding of the curve required by the welding operation can be completed. Alternatively, the workpiece can be installed on the trolley, and the welding torch can always be synchronized with the curve movement track while the workpiece is moving. The guide rail needs to be prefabricated according to the shape of the weld, which is not only costly but also seriously affects the production cycle of the product. Therefore, there is an urgent need for an intelligent welding device.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention provides an intelligent welding device, which can complete straight and curved welding in a plane.

For achieving the above object, the present invention provides following scheme:

The invention provides an intelligent welding device, comprising a welding torch, a guiding mechanism, a driving mechanism, a clamp mechanism and a control system; the welding torch is arranged on the guiding mechanism, and the driving mechanism is used for driving the welding torch along the guiding The mechanism moves; the fixture mechanism is used to fix the workpiece to be welded, the control system is electrically connected to the welding torch, the guide mechanism, the drive mechanism and the fixture mechanism, and the control system is used to control the Operation of the welding torch, the drive mechanism, and the gripper mechanism.

Optionally, the guide mechanism includes two guide wheels arranged in parallel, a guide block is arranged below each guide wheel, a through guide groove is arranged on the guide block, and the bottom of the guide wheel is slidably arranged. in the through guide groove; a slider is slidably arranged between the two rows of the guide wheels, a support rod is arranged on the top of the slider, a threaded rod is arranged on the top of the support rod, and the welding torch is arranged on the One end of the threaded rod, and the other end of the threaded rod is provided with a balance block.

Optionally, a nut is provided at the bottom of the guide wheel, the nut is connected with the bottom of the guide wheel by threads, and the nut extends into the through guide groove.

Optionally, the through guide groove is an inverted T-shaped groove, the top of the inverted T-shaped groove is open, and the bottom of the guide wheel extends into the inverted T-shaped groove through the top opening.

Optionally, the longitudinal section of the guide wheel is an I-shaped structure, and both sides of the slider can slidably extend into the I-shaped structure.

Optionally, the drive mechanism includes a push rod, the push rod includes a horizontally arranged telescopic rod, a front end of the telescopic rod is provided with a triangular push frame, and the front end of the triangular push frame is drive-connected to the guide mechanism.

Optionally, the clamp mechanism is arranged on an operation table, and a cooling water tank is arranged under the table surface of the operation table.

Optionally, a thermocouple is provided on the operating table, and the thermocouple is electrically connected to the control system.

Optionally, a camera is provided above the welding gun, and the camera is electrically connected to the control system.

The present invention has achieved the following technical effects with respect to the prior art:

The intelligent welding device in the present invention includes a welding torch, a guiding mechanism, a driving mechanism, a fixture mechanism and a control system; the guiding mechanism includes a plurality of guiding blocks and guiding wheels, and by changing the position of the guiding wheels on the guiding The wheel can form any guide rail, and the driving mechanism can make the welding gun move along the preset trajectory in the guiding mechanism, so that the moving trajectory of the welding gun is parallel to the welding seam, so as to complete the welding of any curve or straight line in the plane. .

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the structural schematic diagram of the intelligent welding device of the present invention;

Fig. 2 is the structural schematic diagram of the operating table in the intelligent welding device of the present invention;

3 is a schematic structural diagram of a guide block and a guide wheel in the intelligent welding device of the present invention;

FIG. 4 is a schematic structural diagram of a guide wheel in the intelligent welding device of the present invention.

Description of reference numerals: 1. console; 2. clamp; 3. welding torch; 4. threaded rod; 5. balance block; 6. telescopic rod; 7. triangular push frame; 8. support rod; 9. slider; 10 , guide block; 11, control system; 12, nut; 13, guide wheel.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in Figures 1 to 4, this embodiment provides an intelligent welding device, including a welding torch 3, a guiding mechanism, a driving mechanism, a fixture 2 mechanism and a control system 11; the welding torch 3 is arranged on the guiding mechanism, so The drive mechanism is used to drive the welding torch 3 to move along the guide mechanism; the fixture 2 mechanism is used to fix the workpiece to be welded, the control system 11 is connected to the welding torch 3, the guide mechanism, the drive mechanism and the The mechanisms of the fixture 2 are all electrically connected, and the control system 11 is used to control the operation of the welding torch 3 , the driving mechanism and the mechanism of the fixture 2 .

In this specific embodiment, the guide mechanism includes two rows of guide wheels 13 arranged in parallel, a guide block 10 is arranged below each guide wheel 13, and a through guide groove is arranged on the guide block 10. The bottom of the guide wheel 13 is slidably arranged in the through guide groove; a slider 9 is slidably arranged between the two rows of the guide wheels 13 , and a support rod 8 is arranged on the top of the slider 9 , and the support rod 8. A threaded rod 4 is provided at the top, the welding torch 3 is provided at one end of the threaded rod 4, and the other end of the threaded rod 4 is provided with a balance block 5. By changing the quantity or quality of the balance weight 5, or changing the lateral position of the balance weight 5, the rough adjustment of the balance at both ends of the support rod 8 is completed. The balance weight 5 can be one or more nuts matched with the threaded rod 4.

A nut 12 is provided at the bottom of the guide wheel 13 , the nut 12 is connected with the bottom of the guide wheel 13 by threads, and the nut 12 extends into the through guide groove.

The through guide groove is an inverted T-shaped groove, the top of the inverted T-shaped groove is open, and the bottom of the guide wheel 13 extends into the inverted T-shaped groove through the top opening.

The longitudinal section of the guide wheel 13 is an I-shaped structure, and both sides of the slider 9 can slide into the I-shaped structure.

More specifically, a bolt runs through the middle of the guide wheel 13, the top of the bolt is located above the guide wheel 13, the bolt penetrates the guide wheel 13 and then the bottom of the guide wheel 13 is matched with the nut 12, and there is a space between the outer wall of the nut 12 and the inverted T groove. Limiting relationship, that is, the nut 12 can slide along the inverted T-shaped groove but cannot rotate. By changing the position of the guide wheel 13 and fixing the guide wheel 13, the guide wheel 13 can be fixed at any position on the inverted T-shaped groove, so that the plurality of guide wheels 13 form any linear guide rail in the plane.

The drive mechanism includes a push rod, and the push rod includes a horizontally arranged telescopic rod 6 . The front end of the telescopic rod 6 is provided with a triangular push frame 7 , and the front end of the triangular push frame 7 is drivingly connected to the guide mechanism. The telescopic rod 6 is an electric telescopic rod 6 or an electric push rod, so that the triangular push frame 7 can be driven to move forward. The width of the front end of the triangular push frame 7 is determined according to the maximum transverse dimension of the entire welding seam.

More specifically, the two ends of the front end of the triangular push frame 7 are respectively provided with a previously protruding limit block, a slide rail is provided between the two limit blocks, and a pulley is arranged on the support column at the same height as the slide rail. It can slide along the slide rail. When the telescopic rod 6 pushes the support frame, since the slider 9 slides forward along the linear guide rail formed by the plurality of guide wheels 13, the support rod 8 and the slider 9 keep moving synchronously, and the support rod 8 is relative to the triangle. The push frame 7 has a displacement in the left and right direction, and the pulleys and slide rails can reduce the friction between the support rod 8 and the triangular push frame 7, so that the slider 9 can move more smoothly along the linear guide rail composed of multiple pulleys, which is beneficial to improve the The displacement accuracy of the welding torch 3 makes the welding seam more uniform and accurate, and effectively reduces the wear of the support rod 8 and the triangular push frame 7 .

The control system 11 includes a host computer, control buttons and a control panel, and the control panel and the control buttons are all connected with the host computer.

The mechanism of the clamp 2 is arranged on an operation table 1, and a cooling water tank is arranged under the table surface of the operation table 1. The operating table 1 is provided with a thermocouple, and the thermocouple is electrically connected to the control system 11 . A camera is disposed above the welding torch 3 , and the camera is electrically connected to the control system 11 . The radiator is used to cool the workpiece to be welded to avoid excessive temperature during the welding process. The temperature can also be adjusted by the medium to preheat the welding workpiece and control the cooling rate of the welded joint (weld area), reducing the welding area and the welding area. The temperature difference between the overall temperature of the workpiece and the temperature inhomogeneity between the welding area and the structure of the welded part are also smaller, which reduces the welding stress on the one hand, and the welding strain rate on the other hand, which is beneficial to avoid the generation of welding cracks; To detect the temperature around the welding seam, stop welding when the temperature is too high to ensure the safety of the welding process. The camera adopts a CCD camera (charge coupled device). During the welding process, the CCD camera will detect the workpiece every 10 seconds. Take a photo and transmit the captured photo to the control system 11. The control system 11 analyzes, integrates and judges the photo information. If the control system 11 judges that the welding seam is unqualified through the photo, it stops welding.

The specific use process of the intelligent welding device in this embodiment is as follows:

Adjust the position of the guide wheel 13 on the guide block 10 according to the shape of the welding seam, so that the plurality of guide wheels 13 form a guide rail that conforms to the shape of the welding seam, that is, the slider 9 can drive the support when sliding along the plurality of guide wheels 13 The rod 8 drives the welding torch 3 to move along the welding seam; the telescopic rod 6 is activated to extend the telescopic rod 6 to drive the triangular push frame 7 to drive the support rod 8 to move to complete the welding.

Before welding starts, the temperature of the parts to be welded on the console can be adjusted through the medium in the cooling water tank, so that the temperature of the parts to be welded reaches a temperature suitable for welding, and the temperature difference between the welding area and the overall temperature of the welded parts can be reduced. It is beneficial to avoid the occurrence of welding cracks.

During the welding process, the temperature around the welding seam is monitored in real time through the thermocouple, and the CCD camera is used to take pictures of the welded parts. And adjust the elongation rate of the telescopic rod 6 and adjust the welding speed, thereby effectively improving the quality of the welding seam.

It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. . Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes that come within the meaning and range of equivalents of , are intended to be embraced within the invention, and any reference signs in the claims shall not be construed as limiting the involved claim.

In this specification, specific examples are used to illustrate the principles and implementations of the present invention, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention; There will be changes in the specific implementation manner and application scope of the idea of the invention. In conclusion, the contents of this specification should not be construed as limiting the present invention.

Claims

An intelligent welding device is characterized in that it includes a welding torch, a guiding mechanism, a driving mechanism, a clamping mechanism and a control system; the welding torch is arranged on the guiding mechanism, and the driving mechanism is used to drive the welding torch along the The guide mechanism moves; the clamp mechanism is used to fix the workpiece to be welded, the control system is electrically connected with the welding torch, the guide mechanism, the drive mechanism and the clamp mechanism, and the control system is used to control all the The operation of the welding torch, the drive mechanism and the clamp mechanism.
The intelligent welding device according to claim 1, wherein the guide mechanism comprises two rows of guide wheels arranged in parallel, a guide block is arranged under each guide wheel, and a through hole is arranged on the guide block. A guide groove, the bottom of the guide wheel is slidably arranged in the through guide groove; a slider is slidably arranged between the two rows of the guide wheels, and a support rod is arranged on the top of the slider, and the support rod The top is provided with a threaded rod, the welding torch is provided on one end of the threaded rod, and the other end of the threaded rod is provided with a balance block.
The intelligent welding device according to claim 2, wherein a nut is provided at the bottom of the guide wheel, the nut is connected with the bottom of the guide wheel by threads, and the nut extends into the through guide groove.
The intelligent welding device according to claim 2, wherein the through guide groove is an inverted T-shaped groove, the top of the inverted T-shaped groove is open, and the bottom of the guide wheel extends through the top opening into the into the inverted T-slot.
The intelligent welding device according to claim 2, wherein the longitudinal section of the guide wheel is an I-shaped structure, and the two sides of the slider are slidably extended into the I-shaped structure.
The intelligent welding device according to claim 1, wherein the driving mechanism includes a push rod, the push rod includes a horizontally arranged telescopic rod, and a triangular push frame is provided at the front end of the telescopic rod, and the triangular push rod The front end of the frame is drivingly connected with the guide mechanism.
The intelligent welding device according to claim 1, wherein the clamp mechanism is arranged on an operation table, and a cooling water tank is arranged under the table surface of the operation table.
The intelligent welding device according to claim 7, wherein a thermocouple is provided on the operating table, and the thermocouple is electrically connected to the control system.
The intelligent welding device according to claim 1, wherein a camera is provided above the welding torch, and the camera is electrically connected to the control system.