KR101308878B1 - 3-phase inverter projection welding machine - Google Patents

Abstract

PURPOSE: A three-phase inverter rectifier type brazing resistance device is provided to remarkably reduce the number of working processes, thereby improving workability and the productivity for construction. CONSTITUTION: A three-phase inverter rectifier type brazing resistance device includes a fixed table (100), an up-down press (200), a press controlling board (300), a welding transformer (400), and a control device (500). The up-down press includes an electrode plate on the end portion of a cylinder, thereby brazing a target object while pressure-welding and pressing the target object. The press controlling board is formed in order to control the pressure of the cylinder of the up-down press and the operation of the up-down press. The welding transformer provides a preset rated capacity to the target object. The preset rated capacity of the welding transformer is 300 kva, and the maximum current thereof is 130,000 A.

Description

3-phase inverter rectification brazing resistance welding machine {3-Phase inverter projection welding machine}

The present invention relates to a three-phase inverter rectifier brazing resistance welding device capable of high-capacity projection welding of aluminum alloy car and various galvanized panels including automobiles, and the welding device has a welding capability due to securing a rise in rated capacity and maximum current. In addition to improvements, it also enables the welding of large area copper sheets for bus bar panels for contacts in building energizing lines, resulting in significant savings in workmanship, such as riveting. It is related to the three-phase inverter rectifier brazing resistance welding apparatus, characterized in that the workability is significantly improved, thereby the construction productivity is greatly improved.

In general, resistance brazing welding is applied by applying a large current under pressure, thereby obtaining heat by contact resistance generated at the contact surface between metals and intrinsic resistance of the metal. It refers to a method of joining by melting only filler material without melting.

Such resistance welding is divided into butt welding, spot welding, and seam welding. Among them, butt welding is a method of welding a metal rod or a metal tube to each other, and when a current is transmitted to each end of a pair of metal rods or metal tubes, The joint is heated in red, and this is a welding method for joining by applying pressure.

On the other hand, conventional brazing welding requires a high capacity of rated capacity and current, but it is difficult to realize in the art, which in turn is miniaturized due to deterioration of welding ability during the production of contact bus bar panels of building conductive lines. There has been a problem that can only be produced by.

That is, the conventional contact bus bar has a width of about 200mm * 200mm in general, but it is welded at a capacity of 200kva, but foreign matters (Burr) are generated around it, so that it is difficult to achieve a smooth power line.

In order to improve this, conventionally, a plurality of copper plates were used as contact booths by riveting, but such riveting work was cumbersome due to a lot of troublesome work, and the workability was degraded, and the productivity was not smooth. The problem of deterioration is occurring.

In other words, in the conventional resistance welding machine to manufacture a bus bar, a plurality of plates are welded to each other but the problem is that such a bus bar can be welded only when the horizontal and vertical dimensions are small. It's coming.

The present invention is to solve the above-mentioned problems, the technical gist of the present invention relates to a three-phase inverter rectified brazing resistance welding apparatus capable of large-scale projection welding with aluminum alloy car and various galvanized panels, including automobiles, The increase in rated capacity and maximum current not only improves the welding capability, but also enables the welding of large-area copper sheets for bus bar panels for contacts in the building's current carrying lines. It is an object of the present invention to provide a three-phase inverter rectified brazing resistance welding device, characterized in that the workmanship such as betting work is significantly reduced (omitted) and thus the workability is greatly improved, thereby improving the construction productivity.

In order to achieve the above object, the present invention is a clamp is formed on one side to be fixed after the to-be-welded object is fixed, the fixing table 100 is formed with the electrode on the other side; An up-down press (200) positioned at an upper portion of the fixed table and having an electrode plate formed at an end of the cylinder to perform brazing while pressing and pressing the clamped welding material; A pressurizing control panel 300 configured to control the cylinder pressure and the presence or absence of the up-down press; A welding transformer (400) for providing a set rated capacity (kva) to the welded object; A control device 500 formed to control the pressure control panel and the welding transformer; .

At this time, the fixing table 100 is preferably further provided with a cooling chamber 110 having a cooling water passage 111 to sense the heat generated during welding in the lower part to interlock control the cooling temperature and cycle.

In addition, the fixed plate 100 and the electrode plate of the up-down press is formed with a flat cross-sectional area of at least 500mm * 500mm to weld the welded object in the form of a panel having a horizontal * vertical * height specification of 450mm * 450mm * 25 ~ 30mm. It is desirable to.

Thus, the set rated capacity (Kva) of the welding transformer 400 is 300 kva, it is preferable that the maximum current 130,000A.

In addition, the control device 500 may be set so that the heating temperature and time and the cooling operation period during welding can be set in accordance with the specifications of the welded object.

As such, the present invention improves welding capability due to securing a rise in rated capacity and maximum current, and can weld a large-area copper sheet for a bus bar panel for a contact in a building energizing line. By doing so, the number of work operations such as riveting work is significantly reduced (omitted) compared to the past, the workability is significantly improved, and thus the construction productivity is greatly improved.

1 is a side view of a welding apparatus according to the present invention,
Fig. 2 is a front view of Fig. 1,
3 is a plan view of FIG.
Figure 4 is an exemplary view showing a process in which the copper plate is set on the fixed table of the welding apparatus according to the present invention,
5 to 7 is an exemplary view showing an initial stage, an intermediate stage, and a completion stage in a welding state according to FIG. 4.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings.

First, as shown in Figures 1 to 3, the present invention is largely composed of a fixed table, an up-down press, a pressure control panel, a welding transformer and a control device.

Thus, the fixing table 100 is a clamp is formed on one side so as to be fixed after the welded object is seated, the electrode is formed on the other side.

At this time, the fixing table 100 is preferably further provided with a cooling chamber 110 having a cooling water passage 111 to sense the heat generated during welding in the lower part to interlock control the cooling temperature and cycle.

In addition, the fixed plate 100 and the electrode plate of the up-down press is formed with a flat cross-sectional area of at least 500mm * 500mm to weld the welded object in the form of a panel having a horizontal * vertical * height specification of 450mm * 450mm * 25 ~ 30mm. It is desirable to.

Thus, the up-down press 200 is formed on the end of the cylinder to perform the brazing while pressing and pressing the clamped workpiece to be positioned above the fixed table.

At this time, the pressure control panel 300 is formed to control the cylinder pressure and the presence or absence of the up-down press.

Thus, the welding transformer 400 is formed to provide a rated capacity (kva) set in the welded object.

At this time, the set rated capacity (Kva) of the welding transformer 400 is 300kva, the maximum current is preferably 130,000A.

In addition, the control device 500 is formed to control the pressure control panel and the welding transformer.

Thus, the control device 500 is preferably to be able to set the heating temperature and time and the cooling operation period during welding in accordance with the specifications of the welded object.

On the other hand, when looking at the present invention in more detail, as a use condition of the welding apparatus, ambient temperature: 0 ~ 40 ℃ range / place of use: indoor / altitude not exceeding 1000m / cooling water temperature: water supply port 30 ℃ It is below and it is preferable that the yield is 90 l / min or more (1 f / hour).

The power source rating is (1) welding power source: three-phase AC 440V (380V, 50HZ), (2) control power source: one-phase AC 220V, (3) compressed air source: 5Kg / ㎠, (4) cooling water It is preferable that it is formed at 1-3 Kg / cm 2.

At this time, the pressure control panel is a pressing method, the head control is formed of low friction pneumatic, the angle is made of a fixed type.

At this time, the sliding method of the press is preferably performed by the LM guide method. Moreover, it is preferable that the air tank capacity of a cylinder is 30 liters.

At this time, the control method is preferably controlled by the power supply voltage variation compensation method, it is preferable that the production counter and the electrode exchange counter is added. Thus, the rectifier of the welding transformer is preferably 7000 ~ 4k.

Therefore, embodiments of the welding conditions of the present invention described above are summarized as shown in Table 1 below.

Specification of welding conditions of welding apparatus according to the present invention

As described above, the present invention is a process for welding after setting the copper plate according to the above-described welding conditions as shown in Figure 4 to 7, ⓐ after pressing the welding start signal is applied, ⓑ after the heating state is confirmed Release the pressurization, insert the thin copper plate at ⓒ point 2, apply the pressurization / welding signal, ⓓ Check the heating state, and then perform the same operation ⓑ and ⓒ at the 3rd and 4th points, and check the status of the overall heating. After the welding signal is stopped, ⓕ is formed to maintain the cooling state in the pressurized state (can be generated immediately upon termination).

The present invention is to digitally measure the welding current value / welding time / pressurization time quantified by referring to the brazing welding condition 1 in order to press (weld) the eastern bar [30t (0.1t * 300 sheets) x 400 x 400] You must be able to control it.

In addition, since the cooling method is important after heating, the cooling water pipe is worked on several parts of the upper and lower platen electrodes to maximize the cooling effect.

In other words, the present invention was to grasp the problem caused by the local overheating in the past, it was noted that the heating state is not evenly transferred according to the characteristics of the carbon and the degree of processing / surface of the welding material during the operation, which uses a small size of carbon Since multiple presses were made (actually the copper plate was clipped and held several times during the 12t x 250mm x 100mm operation), it was impossible to weld large sized pieces.

In other words, the conventional welding method only takes about 16 minutes for welding, and the surface is not constant. Therefore, post work (needed for both sides) is inevitably required.

Thus, the present invention ⓐ first: the carbon electrode 130mm * 110mm * 50t to generate heat at a time, ⓑ second: the copper plate (0.5t use-25t x 250mm x 250mm) carbon electrode 30t x 260 mm x 260mm By working with the above, the above-described conventional welding problem was improved.

Table 2 summarizes these problems and improvements as follows.

Welding characteristics according to the present invention

As such, the welding property of the present invention is the most useful of graphite properties, which is thermal conductivity along current, which has 1/3 of copper at room temperature, 1/2 of aluminum, and twice as much as ordinary steel, and the resistance of graphite is 400 ° C to 600 ° C. It decreases as the temperature rises up to, but increases over the temperature range.

However, thermal conductivity and local heat generation are generated according to the size of the carbon, so that it is formed to be applied to a large size eastern sub bar using the same.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

100 ... fixed table 200 ... up-down press
300 ... pressure control panel 400 ... welding transformer
500 ... controls

Claims (5)

delete A fixed table 100 having a clamp formed at one side to be fixed after the to-be-welded object is seated, and an electrode part formed at the other side thereof; An up-down press (200) positioned at an upper portion of the fixed table and having an electrode plate formed at an end of the cylinder to perform brazing while pressing and pressing the clamped welding material; A pressurizing control panel 300 configured to control the cylinder pressure and the presence or absence of the up-down press; A welding transformer (400) for providing a set rated capacity (kva) to the welded object; A control device 500 formed to control the pressure control panel and the welding transformer; In the three-phase inverter rectified brazing resistance welding device is configured,
The fixed table 100 is a three-phase inverter rectification type characterized in that the cooling chamber 110 having a cooling water path 111 is further provided to sense the heat generated during welding in the lower part to interlock control the cooling temperature and cycle. Brazing resistance welding device. According to claim 2, wherein the fixed table 100 and the electrode plate of the up-down press is formed with a flat cross-sectional area of at least 500mm * 500mm panel width welded in the form of a panel width * length * height of 450mm * 450mm * 25 ~ 30mm Three-phase inverter rectified brazing resistance welding device, characterized in that for welding. 4. The three-phase inverter rectifier brazing resistance welding device according to claim 3, wherein the set rated capacity (Kva) of the welding transformer (400) is 300 kva and the maximum current is 130,000 A. 5. The three-phase inverter rectifier brazing resistance welding device according to claim 4, wherein the control device (500) is configured to variably set the heating temperature, time, and cooling operation period in accordance with the specifications of the welded object.

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