WO2021102809A1

WO2021102809A1 - Platform for detecting service life welding machine

Info

Publication number: WO2021102809A1
Application number: PCT/CN2019/121637
Authority: WO
Inventors: 狄原震
Original assignee: 狄原震
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2021-06-03

Abstract

A platform for detecting the service life of a welding machine, comprising: a simulated welding material (2); a simulated welding rod (1), which cooperates with the simulated welding material (2) at an interval; a drive mechanism, which drives the intermittent contact cooperation between the simulated welding rod (1) and the simulated welding material (2); and a welding machine, which is provided with a positive electrode access end and a negative electrode access end, the positive electrode access end being electrically connected to the simulated welding material (2), and the negative electrode access end being electrically connected to the simulated welding rod (1). The working state of continuous spot welding by a welding machine is fully simulated, and the goodness of fit between same and the normal working state of the welding machine can be as high as 95-98%, which is closest to the working state of the welding machine, thus a determination result is close to the service life when the welding machine works normally; moreover, the structure is simple, costs are low, and manufacturing and use are convenient.

Description

Welding machine life testing platform

Technical field

The invention relates to welding machine life detection, in particular to a welding machine life detection platform.

Background technique

The welding machine uses the high temperature arc generated when the positive and negative poles are short-circuited instantaneously to melt the solder and the material to be welded on the electrode, and the purpose of combining the objects to be contacted.

During continuous spot welding of the welding machine, the electrode and the welding material are in intermittent contact and coordination, and the welding machine is in full dynamic change-voltage, current and other energy are constantly changing, while traditional aging equipment is in static mode--welding The material and the welding rod are in contact and matched and energized for a long time to test the performance. The aging in the static mode is the welding machine life test, which is very low in coincidence with the normal welding machine working state, especially the continuous spot welding process, which leads to the test structure and the welding machine. There is a big difference in the service life during normal operation.

Summary of the invention

Aiming at the shortcomings of the prior art, the present invention provides a welding machine life detection platform. Through the design of the simulated welding material and the simulated welding rod matched with intervals, the positive and negative electrodes of the welding are respectively connected to the simulated welding material and the simulated welding rod, and the driving mechanism is combined. The design of driving the simulated welding rod and the simulated welding material in intermittent contact, fully simulates the working state of the continuous spot welding of the welding machine, and its coincidence with the normal working state of welding can be as high as 95-98%, which is the closest to the working state of the welding machine, so that The judgment result is close to the service life of the welding machine in normal operation, with simple structure, low cost, and convenient manufacturing and use.

In order to achieve the above objectives, the present invention provides the following technical solutions: a welding machine life detection platform, including:

Simulated welding consumables;

Simulated welding rod, the simulated welding rod is matched with the said simulated welding material interval;

A driving mechanism, which drives the intermittent contact and coordination between the simulated welding rod and the simulated welding material;

The welding machine has a positive terminal and a negative terminal. The positive terminal is electrically connected to the simulated welding material, and the negative terminal is electrically connected to the simulated welding rod.

On the basis of the above solution, preferably, it also includes a normally closed switch and a current detection module. One end of the normally closed switch is electrically connected to the analog welding material, the other end is electrically connected to the positive terminal, and one end of the current detection module is electrically connected to the analog welding rod. , The other end is electrically connected to the negative terminal, the current detection module is electrically connected to the normally closed switch, and the current detection module transmits an electrical signal to the normally closed switch to control the intermittent opening of the normally closed switch.

On the basis of the above solution, as a preference, it also includes a voltmeter for measuring the voltage of the analog welding rod and the analog welding material when they are in intermittent contact and mating, and a counter provided in parallel with the voltmeter.

On the basis of the above solution, as a preference, an ammeter for displaying the current value detected by the current detection module is also included.

On the basis of the above solution, as a preference, both the simulated welding material and the simulated welding rod are copper rods.

On the basis of the above solution, preferably, the driving mechanism includes a workbench, a linear guide rail is fixedly connected to the workbench, a slider is movably connected to the linear guide rail, and an isolation plate is fixedly connected to the upper part of the slider, so One side of the isolation plate is fixedly connected with a weldment fixing device, and the other side is eccentrically connected to a rotating wheel through a link mechanism. The rotating wheel is fixedly connected to the output shaft of the driving motor, and the driving motor is fixedly connected to the workbench, simulating The welding rod is fixed on the welding piece fixing device.

On the basis of the above solution, as a preference, the isolation board adopts a phenolic resin board. The phenolic resin board is provided to ensure that the welding position is only performed at the end of the weldment.

On the basis of the above solution, preferably, the delivered fixing device includes a fixing plate vertically fixed on the isolating plate, a pipe is penetrated and fixed on the fixing plate, and the outer wall of the pipe is threadedly connected with a limit bolt. By setting the fixing plate, passing the weldment through the pipe and then fixing it by the limit bolt, the installation position of the weldment can be adjusted according to the needs of use.

On the basis of the above solution, preferably, the link mechanism includes a connecting block, a connecting rod A and a connecting rod B, the connecting block is fixedly connected to one side of the isolation plate, and the connecting rod A penetrates the limit block The rear end is fixedly connected to the connecting block, the other end is rotatably connected to one end of the connecting rod B through a rotating pin, the other end of the connecting rod B is eccentrically connected to the rotating wheel through a rotating pin, and the limit block is fixedly connected to the working On stage. The connecting rod mechanism is used to control the movement range of the weldment to ensure the stability of the test.

Compared with the prior art, the beneficial effects of the present invention are:

1. It can detect the design rationality of the whole welding circuit and avoid design defects.

2. Check whether the welding installation process is in place.

3. Detect the life of electronic materials.

4. The counter counts and analyzes the life span, which is more intuitive.

5. The melting point of the copper rod is closest to the welding state of the electrode, and the simulation is more suitable for normal welding.

6. Delay switch to improve the service life of the copper rod.

Description of the drawings

Figure 1 is a system block diagram of the present invention;

Figure 2 is a schematic diagram of the structure of the present invention;

Fig. 3 is an enlarged view of part A in Fig. 2.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with 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, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Please refer to Figure 1, the welding machine life testing platform, including:

Simulation welding material 2;

Simulated welding rod 1, the simulated welding rod is matched with the said simulated welding material interval;

In the above scheme, through the design of the simulated welding material and the simulated welding rod matched by the interval, the positive and negative terminals of the welding are respectively connected to the simulated welding material and the simulated welding rod, and the driving mechanism is combined to drive the simulated welding rod and the simulated welding material to intermittently contact and cooperate. The design fully simulates the working state of continuous spot welding of the welding machine, and its coincidence with the normal working state of welding can be as high as 95-98%, which is the closest to the working state of the welding machine, so that the judgment result is close to the service life of the welding machine in normal operation.

In the above solution, the entire circuit is energized when the simulated welding rod and the simulated welding material are in contact, and the distance between the simulated welding rod and the simulated welding material is gradually separated under the drive of the driving mechanism, and there is a phenomenon of arcing. The simulated welding consumables and simulated welding rods are melted and their service life is reduced. To overcome this problem, the following design is made,

On the basis of the above scheme, add a normally closed switch and a current detection module. One end of the normally closed switch is electrically connected to the analog welding material, the other end is electrically connected to the positive terminal, one end of the current detection module is electrically connected to the analog welding rod, and the other end is electrically connected. The negative connection terminal is electrically connected, the current detection module is electrically connected to the normally closed switch, and the current detection module transmits an electrical signal to the normally closed switch to control the intermittent disconnection of the normally closed switch.

In this scheme, through the cooperation design of the normally closed switch and the current detection module, a large current signal is generated when the simulated welding material is in contact with the simulated electrode. The current detection module converts the large current signal into a voltage signal and transmits it to the normally closed switch. After the switch receives the signal, it is disconnected, so that the simulated welding rod is driven by the driving mechanism, between the simulated welding rod and the simulated welding material: the separation state of the initial station--contact and cooperation state--the separation of the return to the initial station In a cyclic working state of the state, the separation state of the initial station-in the contact coordination state, the normally closed switch is in the open state, and the contact coordination-return to the separation state of the initial station, the normally closed switch is in the open state. In the solution, on the one hand, it can make the simulated welding rod and the simulated welding material separate without sparks, and there is no arc phenomenon. On the other hand, it can improve the service life of the simulated welding material and the simulated welding rod, and also improve the normally closed switch and current detection. The service life of the module also indirectly improves safety.

More effective is to set a delay switch between the normally closed switch and the current detection module. Specifically, the current detection module is electrically connected to the delay switch, and the delay switch is electrically connected to the normally closed switch. Reasonably design the opening time of the normally closed switch to ensure that no arc is generated. The reason is that the distance between the simulated welding material and the simulated electrode is not long enough. When the normally closed switch is closed, the arc phenomenon may still exist. At the same time, It can increase the no-current time of the simulated welding material and the simulated electrode, increase its cooling time, and increase the service life.

In order to observe the detection effect of this solution more intuitively, it also includes a voltmeter used to measure the voltages of the analog welding rod and the analog welding material when they are in intermittent contact and cooperation, and a counter set in parallel with the voltmeter. Every time the voltmeter changes, The counting result of the counter is increased by 1, and the number of contact and cooperation between the simulated welding material and the simulated welding rod can be displayed in real time through the counter.

It also includes an ammeter for displaying the current value detected by the current detection module, which can be specifically observed and displayed in real time.

Both simulated welding consumables and simulated welding rods are copper rods, which have a long service life and are not easily damaged.

For the driving mechanism, more specifically, as shown in Figures 2-3, the reciprocating driving mechanism of the welding machine life detection device includes a worktable 10 on which a linear guide rail 11 is fixedly connected with bolts. A slider 12 is movably connected to 11, and an isolation plate 13 is fixedly connected to the upper part of the slider 12 by bolts. One side of the isolation plate 13 is bolted to a weldment fixing device 20, and the other side is eccentrically connected by a link mechanism 30 As for the rotating wheel 14, the rotating wheel 14 is fixedly connected to the output shaft of the driving motor 15, and the driving motor 15 is bolted and fixedly connected to the workbench 10. The isolation board 13 is a phenolic resin board. The delivered fixing device 20 includes a fixing plate 21 that is vertically fixed on the isolation plate 30 by bolts, and a pipe 211 is welded and fixed on the fixing plate 21, and the outer wall of the pipe 211 is threadedly connected with a limit bolt. The connecting rod mechanism 30 includes a connecting block 31, a connecting rod A32, and a connecting rod B33. The connecting block 31 is fixedly connected to one side of the isolating plate 13 by bolts. The connecting rod A32 is welded to the rear end of the limiting block 34. Connected to the connecting block 31, the other end is rotatably connected to one end of the connecting rod B33 through a rotating pin, the other end of the connecting rod B33 is eccentrically connected to the rotating wheel 14 through a rotating pin, and the limiting block 34 is fixedly connected to the Workbench 10.

When in use, the weldment is passed through the conduit 211 and then fixed with a limit bolt, and the drive motor is controlled to rotate, so that the weldment reciprocates toward another weldment on the fixed side to simulate the welding action.

In the technical scheme of the present invention, a high-current DC electronic switch can be selected for the normally closed switch, and specifically a 500A high-current DC electronic switch can be selected-the existing high-current models of only 200A and 500A.

For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description, and therefore it is intended to fall within the claims. All changes within the meaning and scope of the equivalent elements of are included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

The welding machine life testing platform is characterized in that it includes:

Simulated welding consumables;

Simulated welding rod, the simulated welding rod is matched with the said simulated welding material interval;

A driving mechanism, which drives the intermittent contact and coordination between the simulated welding rod and the simulated welding material;

The welding machine has a positive terminal and a negative terminal. The positive terminal is electrically connected to the simulated welding material, and the negative terminal is electrically connected to the simulated welding rod.
The welding machine life detection platform of claim 1, further comprising a normally closed switch and a current detection module. One end of the normally closed switch is electrically connected to the analog welding material, and the other end is electrically connected to the positive terminal, and the current detection One end of the module is electrically connected to the analog welding rod, and the other end is electrically connected to the negative terminal. The current detection module is electrically connected to the normally closed switch. The current detection module transmits electrical signals to the normally closed switch to control the normally closed switch. Intermittent disconnection.
3. The welding machine life detection platform according to claim 2, wherein the current detection module is electrically connected to the time delay switch, and the time delay switch is electrically connected to the normally closed switch.
The welding machine life detection platform according to claim 1, further comprising a voltmeter for measuring the voltages of the analog welding rod and the analog welding material when they are in intermittent contact and mating, and a counter provided in parallel with the voltmeter.
3. The welding machine life detection platform of claim 2, further comprising an ammeter for displaying the current value detected by the current detection module.
The welding machine life detection platform according to claim 1, wherein the simulated welding material and the simulated welding rod are all copper rods.
The welding machine life detection platform according to claim 1, wherein the driving mechanism includes a worktable (10), and a linear guide rail (11) is fixedly connected to the worktable (10), and the linear guide rail (11) is fixedly connected to the linear guide rail (11). A sliding block (12) is movably connected to the upper part of the sliding block (12), an isolation plate (13) is fixedly connected to the upper part of the sliding block (12), one side of the isolation plate (13) is fixedly connected with a weldment fixing device (20), and the other side The rotating wheel (14) is fixedly connected to the output shaft of the driving motor (15) through a linkage mechanism (30) eccentrically connected to the rotating wheel (14), and the driving motor (15) is fixedly connected to the worktable (10) , The simulated welding rod is fixed on the weldment fixing device.
The welding machine life testing platform according to claim 7, characterized in that the isolation plate (13) is a phenolic resin plate.
The welding machine life detection platform according to claim 7, characterized in that: the fixed device (20) sent includes a fixed plate (21) vertically fixed on the isolating plate (30), and the fixed plate (21) A conduit (211) is penetrated and fixed, and the outer wall of the conduit (211) is threadedly connected with a limit bolt.
The welding machine life detection platform according to claim 7, characterized in that: the connecting rod mechanism (30) comprises a connecting block (31), a connecting rod A (32) and a connecting rod B (33), and the connecting block (31) It is fixedly connected to one side of the isolating plate (13), the connecting rod A (32) passes through the limiting block (34) and one end is fixedly connected to the connecting block (31), and the other end is connected to the connecting block (31) through a rotating pin One end of the rod B (33) is rotatably connected, the other end of the connected rod B (33) is eccentrically connected to the rotating wheel (14) through a rotating pin, and the limit block (34) is fixedly connected to the worktable (10) on.