KR200334133Y1 - Pad of welder - Google Patents

Abstract

The present invention relates to a welder pad device that is widely applied to the clamp of the welder for overlap welding the steel sheet and the steel sheet using an electrode wheel, the clamp (1) to move the rod 3 in accordance with the width of the steel sheet The power transmission device 2 is installed, and the rod 3 has a pad part 4, and a fixing pad part 6 is installed at the center of the clamp, and a square hole 16 is provided at the left and right sides of the clamp 1. And a plurality of guide bars 1b are installed in the square hole 16 and the rods 3 are moved to the left and right in the guide bars 1b so that the load drive motor 20 is programmable in a super control computer. The pad adjustment data transmitted to the PLC is commanded and driven by a welding machine, the rod 3 is moved to the padding position, and when the movement of the rod 3 is completed, the pad adjustment motor is driven to move the pad portion 4 up and down. Programmable logic The controller was set to the data instructed from (PLC) and by adjusting this After the completion of the clamp cylinder (1a) of the pad is operated to clamp the plate electrode wheel (W) is driven to carry out the butt welding of the steel sheet.

Description

Welder pad device for easy automatic adjustment {Pad of welder}

The present invention relates to a welder pad which is widely applied to a clamp of a welder for overlap welding of a steel sheet and a steel plate by using an electrode wheel, and is particularly used for a welding machine of a tactile material production line. A welding machine pad device is easy to adjust.

Recently, with the development of new technology, cold rolled steel sheet is becoming ultra thin. As the ultra-thin technology of the base metal for welding is developed, the new technology must also be applied to the equipment, but serious problems are frequently caused by the application of the advanced technology of 20 years ago.

According to the prior art, when the pad mounted on the welder clamp is reduced due to a decrease in function, welding failure occurs. The action at this time is very difficult, requires a high level of coordination skills, and poses a serious problem of stopping the operation during the action.

FIG. 1 shows a conventional welder pad, and FIG. 2 shows a state of welding by using a conventional welder pad.

Referring to Fig. 1, the conventional adjusting technique of the pad 5 is shown enlarged on the right side of the figure. Liners 5c and 5c 'are inserted into the lower surface of the clamp, and the pads 5b are fastened with fixing bolts through the knurling portion 5a to adjust the level.

As shown on the left side of the figure, the technique of adjusting all of the pads 5 attached to the clamp 1 requires a very difficult maintenance technique. When the level is poor, as shown in FIG. 2, as the trailing material steel plate S1 slips and overlaps with the preceding material steel plate S2, the welding defect is changed.

This is because a slip phenomenon occurs in a part where the padding force is insufficient due to the pressure applied to the electrode wheel W for welding.

Referring to Fig. 1, four pads are attached to the mouth upper clamp 1. The clamp 1 is moved up and down by the hydraulic cylinder 1a.

Since the pad is assembled at the lower part of the clamp 1, a long adjustment time is required because the pad adjustment can be performed while the entire clamp is disassembled and turned upside down.

In the continuous working line, downtime is prolonged. In particular, welding failure in the continuous annealing process is classified and managed as the most serious trouble phenomenon. Even if the clamp is assembled after adjusting the pad, it is a very advanced technology because it is necessary to adjust the padding state by clamping the steel sheet.

The problem of the prior art is that pad adjustment is impossible when the welding conditions of the steel sheet changes. Recently, the mass production and size change (width: 600 ~ 1100M / M) of ultra-thin (0.015t) steel sheet is frequent, the welding conditions are more disadvantageous.

This is because the slip phenomenon in the ultra-thin material and the pads on both sides of the narrow material (750 M / M or less) often occur and are a serious problem.

The pad is fixed and cannot cope with the change in the thickness of the steel plate, so that the same padding force is applied and the fatal problem that cannot cope with the width change of the steel plate, that is, in the narrow material (less than 760M / M), The pad has a problem of not padding the steel sheet.

The purpose of the present invention is to solve the problems raised above, and it is possible to fully control the pad to automatically control the optimum padding condition according to the change of welding conditions (material, size, etc.) of the steel sheet. It is to provide a welder pad device that is controlled.

The welder pad device of the present invention inputs the operating condition (welder pad level data) to the super control computer and then automatically adjusts the pad before welding through the programmable logic controller (PLC) control.

1 shows a conventional welder pad;

2 is a view showing a state in which welding work using a conventional welder pad.

3 is a view showing the welder pad device of the present invention;

4 is a view showing a clamp of the present invention

5 is a view showing a power transmission device of the present invention;

6 shows a rod of the present invention;

7 is a view showing a pad adjusting device of the present invention;

Figure 8 is a view showing a state in which the welding operation using the welder pad device of the present invention

<Description of Symbols for Main Parts of Drawings>

1: clamp 1a: hydraulic cylinder

1b: guide bar 2: power train

3: rod 4: pad portion

6: fixing pad part 11, 12, 13, 14, 15: clamp

16: square hole 20: drive motor

21: Chain 22: Sprocket

23, 24: screw 25: pulse generator

31: groove 41: pad adjustment motor

42, 43: Zero roll bevel gear 44: Pad adjustment external thread

45: Cap 46: Pad Adjustment Guide

47: pad 48: pad tip nerring portion

49: Pad adjusting internal thread S1: Leading steel plate

S2: trailing steel plate W: electrode wheel

The configuration of the present invention will be described with reference to the accompanying drawings.

Figure 3 shows the welder pad device of the present invention, the clamp (1) is operated up and down by the hydraulic cylinder (1a) to clamp the line, the trailing material steel plate (clamping). The power transmission device 2 mounted on the clamp 1 moves the rod 3 in accordance with the width of the steel sheet, so that narrow width padding is possible.

The rod 3 mounts two pads 4 each and operates left and right. Install the fixed pad part 6 at the center to improve the padding force. The fixed pad portion 6 is fixed only in position and has the same configuration as the pad portion 4.

Figure 4 shows a clamp of the present invention, the clamp (1) is clamped (clamping) the preceding steel plate and the following steel plate in order to overlap welding the steel plate.

Entry clamps (11, 12, 13), which hold the leading edge of the trailing material steel plate for welding preparation, are set up with exit clamps (14, 15) that hold the leading edge of the leading material when the work is finished. It consists of (Set).

Although the hydraulic cylinder 1a is shown only in the antry clamp 11 and the exit clamp 14, the hydraulic cylinder for operating a clamp in the lower part of the antry clamp 12 and the exit clamp 15, respectively, is shown, respectively. Is attached to the clamp.

One clamp 11 will be described for explanation.

Square holes 16 are formed at the left and right sides of the clamp 11, and a plurality of guide bars 1b are installed at the square holes 16. The guide bar 1b is for the rod 3 to which the pad part 4 shown in FIG. 3 is mounted to move left and right.

In FIG. 4, each of the square holes 16 is formed in a quadrangular shape so that the rod can move left and right smoothly, and three guide bars 1b are formed in one square hole 16.

Figure 5 shows a power transmission device of the present invention, the power transmission device 2 is installed on the clamp and has a drive motor 20 for changing the position of the rod (3) in accordance with the width of the steel sheet.

The driving force of the motor 20 is transmitted to the sprocket 22 through the chain 21.

The sprocket 22 is installed on the shaft of the screw 23 and the transmitted rotating power moves the rod 3 left and right through the screw 24 facing the screw 23. The pulse generator 25 is installed in the shaft end of the screw 23.

The screws 23 and 24 are configured to be different in left and right rotational directions so that the rod 3 moves closer to the center, and cross moves away from the open movement.

On the other hand, the pulse generator 25 detects all changes operated for automatic control.

6 shows a rod of the present invention, in which one pad 3 is provided with two pad portions 4, and grooves 31 through which guide bars penetrate through the side of the rod 3 are formed at regular intervals. .

7 shows a pad adjusting device of the present invention, wherein the pad portion 4 is provided with a pad adjusting motor 41 adjacent thereto. The rotation axis of the motor 41 is provided with a Zeol Bevel Gear 42.

A zero roll bevel gear 43 is installed inside the cap 45 of the pad part 4, and the bevel gear 43 meshes with the bevel gear 42 of the motor 41. The zero roll bevel gear 43 rotates along the pad adjustment guide 46 fixed to the cap 45, and an inner diameter square screw 44 for pad adjustment is inserted into the inner diameter thereof.

A pad 47 and a pad top knurling 48 are attached to the lower end of the pad adjusting outer diameter square screw 44, and they are brought into contact with the steel sheet and padded.

A pulse generator 25 is installed on the top of the cap 45 to control the movement of the pad. The pulse generator 25 is provided with a square female screw 49 having the same pitch as the inner diameter of the pad adjusting outer bevel screw 44. The amount of exercise of the pad can be detected and controlled.

Hereinafter will be described the operation of the welder pad device of the present invention.

8 shows a state in which a welding operation is performed using the welder pad of the present invention, and the overlapping welding of the preceding material S1 steel plate and the following material S2 steel plate is illustrated. The welding conditions of the steel sheet (rod operation distance, pad adjustment amount, etc. according to the material of the steel sheet) are stored in the super control computer. During the preceding material (S1) work, the pads of the exit clamp are placed in accordance with the welding conditions of the preceding material steel plate, and the data of the super control computer is transferred to the programmable logic controller (PLC) to wait after completing the automatic adjustment. The welding condition of the trailing material steel plate S2 being prepared for welding with the preceding material is also received from the super control controller and automatically adjusted by the control of the programmable logic controller PLC.

The operation of the welder pad device of the present invention will be described in detail. When the pad adjustment data transmitted from the super control computer to the programmable logic controller (PLC) is commanded to the welder, the load driving motor 20 drives to pad the rod 3. Move to the position of (Pading) (apply the width change of steel plate)

When the movement of the rod 3 is completed, the pad part 4 is driven.

The data applied at this time is stored in the super control computer based on the thickness, material and operating conditions of the steel sheet.

Referring to FIG. 7, when the pad adjustment motor 41 is driven, rotational power is transmitted to the zero roll bevel gear 42. The transmitted power is transmitted to the pad adjusting outer diameter square screw 44 by the square screw machined inside the zero roll bevel gear 43, and the pad 47 is moved up and down to instruct data from the programmable logic controller PLC. Is set.

The pad adjustment outer diameter screw 44 is supported by the pad adjustment guide 46 fixed to the cap 45 to operate. The amount of adjustment of the pad is detected by the pulse generator 25 attached to the upper part and transmitted to the programmable logic controller PLC to enable automatic adjustment.

The pulse generator 25 is counted in contact with the square screw 49 machined to the inner diameter of the pad adjusting outer diameter screw 44. The square screw 49 is a screw having the same pitch as that of the pad adjusting outer diameter screw 44, and the rotation direction is reversed. (The pad adjustment outer diameter screw 44 is the right screw, and the counting screw 49 of the pulse generator is the left screw)

After the adjustment of the pad Pad is completed as described above, the clamp cylinder 1a shown in FIG. 8 is operated and clamped, and then the electrode wheel W is driven to perform butt welding.

By the action of the welder pad device of the present invention, it is possible to completely remove the slip phenomenon of the steel sheet, so that the overlap (Over Lap) does not change, thereby obtaining a good welding result.

Therefore, the change factor of the overlap A larger than the space | interval B between the steel plates which generate | occur | produced in the operation state by the prior art is eliminated.

The welding machine pad device as described above stores the welding condition change of the steel sheet in the super control computer, and when the welding condition changes of the steel sheet, the welding condition data of the super control computer is transmitted to the programmable logic controller (PLC) to command the welder to fully automate the work. It is possible to realize the operation, prevent downtime caused by poor pad level, reduce maintenance time, improve worker safety and contribute to stable operation.

In addition, the welder pad device of the present invention does not require professional maintenance skills, and the operator of the operation side can check the data displayed on the monitor to zero the welding defect due to a poor padding, thereby improving productivity and reducing costs. Provide a significant effect.

Claims (3)

The clamp 1 is operated in the up and down by the hydraulic cylinder (1a) in the welder pad device for clamping the line, the trailing material steel sheet, The clamp 1 is equipped with a power transmission device 2 for moving the rod 3 in accordance with the width of the steel plate, the rod 3 is equipped with a pad portion 4, the fixing pad portion 6 in the center of the clamp ) Is installed, a square hole 16 is formed in the clamp 1 to the left and right, a plurality of guide bars 1b are installed in the square hole 16, and the rod 3 moves to the left and right in the guide bar 1b. And a pad adjustment motor 41 is installed adjacent to the pad part 4, and a zero roll bevel gear 42 is installed at a rotation axis of the motor 41, and a zero roll bevel gear (inside the cap 45 of the pad part 4). 43 is installed, the bevel gear 43 meshes with the bevel gear 42 of the motor 41, and the zero roll bevel gear 43 rotates along the pad adjustment guide 46 fixed to the cap 45 and its inner diameter. An outer diameter square screw 44 for pad adjustment is inserted into the pad, and a pad 47 and a pad tip kneading portion 48 are attached to the lower end of the pad adjustment outer diameter square screw 44. The upper part of the 45 is provided with a pulse generator 25 for controlling the movement of the pad, and the pulse generator 25 has a square female thread 49 having the same pitch as the inner diameter of the pad adjusting outer bevel screw 44. Welder pad device configured to detect and control momentum. The method of claim 1, The power transmission device 2 has a drive motor 20 and the driving force of the motor 20 is transmitted to the sprocket 22 through the chain 21 and the sprocket 22 is installed on the shaft of the screw 23 and transmitted The rotating power of the welder pad device to move the rod (3) to the left, right through the screw 24 facing the screw 23 and the pulse generator 25 is installed at the shaft end of the screw (23). The method of claim 2, The rod driving motor 20 commands and drives the pad adjustment data transmitted from the super control computer to the programmable logic controller PLC by moving the rod 3 to the padding position and when the movement of the rod 3 is completed. The pad adjusting motor 41 is driven to move the pad 47 up and down, set with the data instructed by the programmable logic controller PLC, and after the pad adjustment is completed, the clamp cylinder 1a is operated to clamp the steel sheet. Welder pad device after the electrode wheel is driven to perform a butt welding of the steel sheet.