JPS5852014Y2 - Flash flash removal equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a flash flash removal device for removing flash and flash generated during flash welding.

Conventionally, there has been a device of this type as shown in FIG.

In the figure, there is a fixed frame 3 and a movable frame 4 in the direction of flow of the objects 1 and 2 to be welded, and the movable frame 4 can move horizontally with respect to the fixed frame 3.

A lower fixed electrode stand 5b and an upper fixed electrode stand 5a are respectively attached to the fixed frame 3, and the latter 5a is moved vertically by a pressure device 7 to hold the workpiece 1.

Similarly, a lower movable electrode stand 6b and an upper fixed electrode stand 6a are attached to the movable frame 4, and the latter 6a is moved vertically by the pressurizing device 3 to hold the workpiece 2.

Note that the position of the movable frame 4 is controlled by an upset device 8.

After welding, the upper cutter holder 10 and lower cutter holder 11, which were waiting outside the welding machine, are fixed side cutter holder guide 1.
4a, 14b and moving side cutter holder guide 15a,
The cutter 1 runs in the welding line direction using the guide surface 15b and is built into the upper cutter holder 10 and the lower cutter holder 11.
The flash was removed by 2.13.

FIG. 2 is a diagram showing details of the blade holder guide portion of FIG. 1.

In general, this type of welding machine welds from thin plates (about a few peaks) to thick plates (about several dozen thick plates), so the interval between electrode stands changes depending on the thickness of the plate at the initial and final stages.

Next, the operation will be explained.

The objects to be welded 1 and 2 are set at a preset initial electrode stand interval, and then flash welding is performed.

After welding, the gap between the electrode stands becomes very narrow, and it is very difficult to remove the flash in this state.After welding, the upper movable side electrode stand 6a is raised, and then the movable frame 4 is removed. After widening the distance to a suitable distance, the upper movable electrode stand 6a was lowered again and clamped.

If necessary, the upper fixed electrode stand 5a is raised once, the object to be welded is pulled out a little by the movable electrode stands 6a and 6b, and the welding area is removed from the fixed electrode stand 5a.

After moving slightly away from 5b, move the moving side electrode 6a t6
b is also moved back a little, and the blade holder guide 14a.

The intervals between 14b, 15a, and 15 were made to be just right.

In other words, in this way, the welding part was moved to the center of the electrode stand.

As mentioned earlier, good welding cannot be achieved unless the initial and final intervals are changed depending on the size of the parts 1 and 2 to be welded. In many cases, the distance between the tables must be changed depending on the work being welded.

In other words, the large workpieces 1 and 2 have large flashes but the distance between the final stands is wide, while the lucky workpieces 1 and 2 have small flashes but the distance between the last stands is narrow, so as mentioned above, the electrode stand movement is difficult. An operation was performed to spread the space to a predetermined interval.

As is well known, in flash welding, the huge force normally generated during butt is applied to the electrode stand 5at5b.

6a and 6b, the electrode stand is large and heavy.

For this reason, the pressurizing devices 7 and 8 also need to be very large.

Therefore, raising, lowering, and moving the electrode stand requires a considerable amount of time and energy.

Raising, lowering, and moving such a heavy electrode stand increases the time it takes to remove the flash after welding is completed, and the temperature of the flash decreases, making the weld hard and increasing the cutting resistance. However, this method also had the disadvantage of increasing line down time.

Therefore, in the conventional method, rust burrs were removed using 4 to 5 cutting tools each on the upper and lower sides, as the number of cutting tools suited to the cutting resistance.

This idea was made to eliminate the above-mentioned drawbacks, and by providing an electrode stand separate from the main clamp and quickly raising, lowering, and moving the electrode stand, it is possible to remove burrs immediately after welding. is intended to provide.

An embodiment of this invention will be described below with reference to the drawings.

Figure 3 is a diagram showing an embodiment of the present invention, which basically separates the function of holding the workpiece and the function of adjusting the amount of protrusion, feeding power, and preventing buckling of the workpiece. However, it is significantly different from the conventional method.

A fixed-side electrode protrusion adjustment device 20a is attached to the guide surface of the fixed-side main clamp 35a, and an upper fixed-side electrode stand 16 and a fixed-side electrode stand pressurizing device 22 are respectively disposed in front thereof.

Below that, a fixed side electrode protrusion adjustment device 20b is attached to the guide surface of the fixed side main clamp 35b, and a lower fixed side electrode stand 17 is arranged in front of it.

On the other hand, on the moving side, as well as on the fixed side, the upper part includes a moving side main clamp 36a, a moving side electrode extension adjustment device 21a,
The upper moving side electrode stand 18 and the moving side electrode stand pressurizing device 23 are
At the bottom, a moving side main clamp 36b, a moving side electrode extension adjustment device 21b, and a lower moving side electrode stand 19 are arranged, respectively.

The fixed frame 3 is provided with knife holder guides 24 and 25, respectively.

FIG. 4 is a diagram showing the EV-IV cross section of FIG. 3, and in this figure, electrode stands 16, 17, 18, and 19 are laid out inside the main clamps 35a, 35b, 36a, and 36b, respectively.

FIG. 5 shows that after welding in FIG. 3, the electrode protrusion adjustment devices 20a, 20b, 21a, and 21b are retracted, and the upper cutter holder 26 with the upper cutter 28 attached and the lower cutter holder 27 with the lower cutter 29 attached. The cutter holder is shown inserted along the guides 24 and 25.

According to the method of the present invention, immediately after welding, the upper electrode stand 16.
After the electrode stand 18 has been raised and moved, the electrode stand 16.18 is lowered again, and after securing enough space for the blade holder 26.27 for removing flash to pass through, the blade holder 26°27 with the blade 28.29 attached thereto is moved. Move it forward and remove the flash.

The blade holders 26 and 27 may be mounted on the fixed side with a cantilever structure as shown in FIG. 5, or may be mounted on both sides with the other end attached to the movable side frame 4 as shown in FIG.

In this case, it is advantageous to leave the blade holder auxiliary guides 30, 31 free in the left-right direction and restricted only in the up-down direction.

FIG. 7 is shown as an example of the blade attachment part for removing flash.

The blades 28 and 29 are held by sockets 32', and the extension distance can be adjusted by adjusting bolts 33.

This socket 32 is fixed to the blade holder 26, 27.

In the above-mentioned embodiment, the electrode stands 16 and 18 were raised and then moved as moving bodies, but the pressurizing force of the electrode stands IS and IS are the main clamps 35a and 35b.

36a and 36b, the fluid pressure of the pressurizing devices 22 and 23 is lowered to protect the workpiece and the electrode stand 16.
If it is moved while sliding between 18, the time will be shortened and further effects can be expected.

Further, in this embodiment, the blade holder guide 24.25 and the auxiliary guide 30.31 are provided on the fixed frame 3 and the movable frame 4, respectively.
5a, 35b, 36a.

The same applies if it is provided in 36b.

Further, in the above embodiment, the number of blades is one on the upper and lower sides, but it is effective if the most effective number is selected in consideration of the life of the blades, the accuracy of the cutting surface, etc.

As described above, according to the present invention, unlike the conventional heavy electrode stand 5a,
Light electrode stand 16°1g, 17.1 without moving 6a
Since the purpose can be achieved by simply moving the part 9, the time from after welding to the start of flash removal is shortened, and therefore the flash can be cut while it is still hot.

In other words, high-temperature cutting is possible, the load on the cutter is reduced, and cutting is possible with just one upper and lower cutter.

This simplifies the structure of the blade holder and is also advantageous in terms of blade setting, maintenance, chip disposal, etc.

In addition, if the blades are used with one upper and lower blade, the stroke of the blade will be shorter, and if cutting is performed at high temperatures, the cutting force can be removed while the specific cutting force is low, which reduces the load on the blade and naturally extends the life of the blade. You can expect good results.

[Brief explanation of the drawing]

Fig. 1 is a front view of a conventional welding machine, Fig. 2 is a detailed view of the blade holder guide section of the conventional welding machine, Fig. 3 is a cross-sectional front view of an embodiment of the present invention, and Fig. 4 is a sectional view of the third embodiment of the welding machine. IV-IV cut-away diagram of the figure Figure 5 is a diagram showing the state of flash removal according to the present invention, Figure 6 is a diagram showing another example of the present invention, and Figure 7 is a diagram for explaining the installation of the cutter. 1 and 2 are objects to be welded,
35a. 35b, 36a, 36b are main clamps, 16-19
is an electrode stand, 26.27 is a blade holder, and 28°29 is a blade. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A pair of main clamps that are arranged opposite to the welding line and hold the workpiece, a pair of electrode stands that can move forward and backward with respect to the welding line when the main clamps hold the workpiece, and A flash flash removal device comprising: a blade that enters between both electrode stands when the electrode stand retreats and removes flash flash from a workpiece by moving along a welding line.