JPS6325009Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is based on the method of manufacturing a coil material or a sheet material by cutting out a necessary shaped member using a blank die. This invention relates to a welding device for residual steel plates used for reusing.

(Prior art) Conventionally, as for the cutting and joining of steel plates using the same device, Japanese Patent Publication No. 44-5288 and Japanese Patent Publication No. 50
A device described in Japanese Patent No. 19503 is known.

These conventional devices cut and join strip-shaped steel plates using bands or conditions. All of these devices are formed so that the holding surface of the steel plate and the upper surface of the lower blade always remain on the same plane, and the steel plate This device can work without changing the height position of the steel plate, not only during cutting, but also when advancing the steel plate after cutting it, and during welding.

Furthermore, the belt-shaped steel plate is held by the holding force of the steel plate holding device alone.

(Problems to be solved by the invention) However, such conventional devices have the following problems.

Since the belt-shaped steel plate was held only by the holding force of the steel plate holding device, it was necessary to ensure that the steel plate holding device had enough holding force to overcome the cutting resistance force when cutting the steel plate, and even if the steel plate holding device had sufficient holding force, If there is no force, this will cause deformation of the steel plates and misalignment of the steel plates facing each other.

The holding surface of the strip-shaped steel plate and the top surface of the lower blade were formed so that they were always on the same plane, so when the opposing steel plates were moved toward each other after cutting the steel plate, the holding surface and the top surface of the bottom blade The metal is moved while being pressed against the steel plate, which tends to cause scratches on the lower surface of the steel plate, and requires a large moving force due to contact resistance.

In particular, the cut surface of the steel plate must be moved for welding without causing any displacement of the cutting position, and the steel plate holding device must apply a high force to hold the steel plate while moving. It was remarkable.

(Means for solving the problem) The present invention was made with the purpose of solving the above-mentioned problems. A support is provided to guide the upper mold in a vertically movable manner, and a pair of upper and lower blades are provided that can cut the end of the remaining material after the shaped member has been extracted from the coil material or the steel plate of the sealing material into a straight line. Remaining material holding devices are provided parallel to the upper mold and the lower mold, respectively, and have holding surfaces capable of holding the residual material on the same plane, and are opposed to each other, and are arranged in a direction orthogonal to the pair of upper and lower blades. The residual material holding device is provided so as to be movable back and forth, and the residual material holding device is elastically supported by an elastic body so that the residual material is separated from the lower mold except when cutting the residual material, and the upper mold resists the spring force of the elastic body. When the upper mold is lowered, it comes into contact with the lower surface of the upper mold, and when cutting the remaining material, the holding surface and the upper surface of the lower blade are formed on the same surface, and the pair of upper and lower blades are attached to the support. A guide member is provided that guides the arm member in parallel with the blade, and a welding machine torch that can be placed between the pair of upper and lower blades is attached to the tip of the arm member. It was a means to do so.

(Function) Therefore, in the residual steel plate welding apparatus of the present invention, by using the above-described means, when cutting a pair of opposing residual materials, the lower surface of the upper die and the residual material holding device are connected. The remaining material is cut by the pair of upper and lower blades while being held by the force obtained by adding the holding force of the remaining material holding device to the clamping force of the upper die and the lower die.

After cutting, when the upper mold separates from the lower mold, the remaining material held in the elastic residual material holding device made of an elastic body and the lower mold are separated positionally, and the remaining material after cutting advances. In this case, the advancing operation is performed in a state where there is no contact between the remaining material and the upper surface of the lower blade.

Next, the torch of the welding machine moves along the abutting portion of the pair of remaining materials in a butted state, thereby joining the pair of remaining materials.

(Example) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First, the configuration of the embodiment will be explained with reference to the drawings shown in FIGS. a moving frame 5 provided to be able to move up and down;
This configuration includes an upper die 6 fixed to the movable frame 5. The movement range of the movable frame 5 is regulated by an upper limit switch 7 and a lower limit switch 8 provided on the support 4.

Reference numeral 9 denotes a residual material holding device, which is attached to the lower die 3 of the press P by a spring ( A pair of elastic bodies) 10 and a support stand 11 are provided. A work base 903 having 903a and the work base 90
3, and a clamp actuation cylinder 905 for actuating the work clamp 904.

Reference numerals 12 and 13 denote a pair of upper shearing blades and a pair of lower shearing blades, which allow the residual material holding device 9 to remove the residual materials m,
These are provided on the upper die 6 and the lower die 3 of the press P in order to form straight cut surfaces C, C parallel to each other in the remaining materials m, m while holding m.
The upper shearing blade 12 and the lower shearing blade 13 are long blades with respect to the cutting direction (direction of arrow A) in order to obtain straight cutting surfaces C, C.

Furthermore, on both sides of one upper shearing blade 12, pressure pads 14 are attached to the upper mold 6 via springs (elastic bodies) 15 for pressing and fixing the remaining materials m and m during cutting. A scrap shooter 16 is formed in the opposing portion of the other lower shearing blade 13.

Reference numeral 17 denotes a work base drive cylinder as a residual material driving device, and in order to butt the linear cut surfaces C, C of the residual materials m and m by the upper shearing blade 12 and the lower shearing blade 13, the residual material holding device 9 This work base drive cylinder 17 is provided in
The main body part 17a is fixed to the support stand 11, the rod part 17b is attached to the work base 903 of the residual material holding device 9, and the work base 903 is formed to move forward and backward in the direction perpendicular to the cutting direction (direction of arrow B). .

In order to regulate the amount of forward and backward movement of the work base 903, the slide guide 901 is provided with a backward limit switch 18 and a forward limit switch 19.

Further, in the work base 903, in order to confirm whether or not the remaining materials m and m are attached, a remaining material confirmation detector 20 using a reflective phototube is embedded.

Reference numeral 21 denotes a guide member, which is provided in the support column 4 of the press machine P in a direction parallel to the cutting direction.The guide member 21 is equipped with a forward limit switch 23 for regulating the forward and backward movement of the arm member 22, which will be described later. and a backward limit switch 24.

A pair of left and right guide members 21 are provided on the support column 4 to support the arm member 22 at both ends.

22 is an arm member, and the guide member 2
1 and is provided so as to be movable forward and backward by an arm drive device 25.
The arm drive device 25 that moves the support column 4 forward and backward is
A DC motor 251 with a speed control mechanism provided in the
A screw shaft 25 provided on the rotating shaft of the DC motor 251
2, and a ball screw 2 provided on the support portion 22a of the arm member 22 and screwed into the screw shaft 252.
53.

The arm driving device 25 may be a combination device of a DC motor and a rack and pinion, a hydraulic cylinder device with a speed control valve, or the like.

Reference numeral 26 denotes a high-frequency DIG welding torch as a torch of a welding machine, which is provided at the tip of the arm members 22, 22, and moves along the butting portion of the remaining materials m, m as the arm members 22, 22 advance and retreat. This high frequency DIG welding torch 26
As shown in FIG. 4, there is a tungsten electrode 261 placed in the center,
1, an arc a is injected from the tungsten electrode 261 to the butt part, and a shielding gas g made of an inert gas such as argon gas is ejected from the gas nozzle 262.
is injected.

Next, the operation will be described.

When joining the remaining materials m, m after shape members have been extracted from the steel plate of coil material or sheet material for reuse, first, as shown in FIGS. 5 and 6, the remaining materials m, m are set on the same surface on the remaining material holding devices 9, 9 with the sides to be joined facing each other.

Next, the upper mold 6 of the press P equipped with the upper shearing blade 12 is lowered, and as shown in FIGS. 7 and 8, the remaining materials m and m are is cut straight in parallel to form straight cut surfaces C and C, and the cut-off member m' is dropped into the scrap shooter 16.

In addition, from setting to cutting the remaining materials m, m, as the upper die 6 descends, the lower surface of the upper die 6 and the remaining material holding devices 9, 9 are brought into contact and pushed, and the remaining materials m, m is held by the holding force of the remaining material holding devices 9, 9 plus the clamping force of the upper die 6 and the lower die 3, while the holding surface 903a of the remaining materials m, m and the lower shearing blade 13
Cutting is made at the point of high holding force when the upper surface 13a of

Next, when the cutting is finished, the upper die 6 of the press P rises, and when the upper die 6 and the lower die 3 are separated, the support stand 11 supported by the spring 10 and the remaining material holding device 9 are As shown in FIG. 1, the remaining materials m, m and the lower mold 3 return to their original positions where they are separated.

Next, by driving by the work base drive cylinder 17, the remaining materials m, m fixed to the remaining material holding device 9 move forward (in the direction of the arrow in FIG. 9), and the remaining materials m,
It is assumed that straight cut surfaces C and C of m are butted against each other.

Subsequently, the high-frequency DIG welding torch 26, which had been waiting outside the cutting work area of the press P, is driven by the arm drive device 25 and reaches the position where the straight cut surfaces C, C of the remaining materials m, m are butted against each other. Along the butt joint of the remaining materials m and m, as shown in FIGS. 9 and 10, butt welding is also carried out using a high frequency DEIG welding torch 26 while traveling at a constant speed.

Then, the remaining joining material M after the butt welding is completed
is removed from the residual material holding device 9 and reused as a press material, etc., and this bonded residual material M
As shown in FIG. 11, this is a good material with little thickness change and thermal strain.

As explained above, in the apparatus for joining residual steel plates of the embodiment, the residual materials m, m during cutting are
The holding force of the remaining material holding device 9 and the upper mold 6
Since the force is obtained by adding the clamping force by the lower die 3 and the clamping force by the lower mold 3, it is possible to obtain a high holding force during cutting when the holding force is most needed, even without setting the holding force by the residual material holding device 9 to be high. This allows the cutting operation to be carried out smoothly and orderly.

In addition, when the remaining materials m, m are advanced after cutting, the remaining materials m, m and the lower die 3 (the upper surface 13a of the lower shearing blade 13) are separated from each other, so that the lower surface of the remaining materials m, m There is no chance of scratches due to metal contact during advancement, and no contact resistance is added, so the advancement force by the work base drive cylinder 17 can be very small.

Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment. For example, the remaining material holding device, the remaining material driving device, the arm driving device, etc. In addition, the arm member may be a cantilever-supported arm member, and the torch of the welding machine is a high-frequency Deig welding torch, which is shown in the example, but it is capable of butt welding. Other welding torches may also be used. Note that changes in the design of these devices and selection of welding torches are included in the present invention to the extent that they do not depart from the gist of the present invention.

(Effect of the invention) Therefore, in the apparatus for joining residual steel plates of the present invention, the residual material is prevented from shifting or bending during cutting because it has a means that can ensure a high holding force for retaining the residual material during cutting. The cutting operation can be carried out smoothly and neatly without getting too hot.

In addition, since we have adopted a means to ensure that there is no metal contact when the remaining material is advanced, the bottom surface of the remaining material will not be scratched due to metal contact movement.
This has the effect of requiring only a very small expansion force.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a residual steel plate welding device according to an embodiment of the present invention, FIG. 2 is a plan view of the embodiment device, and FIG.
The figures are a cross-sectional view taken along the line of FIG. 2, FIG. 4 is a cross-sectional view showing the high-frequency Teig welding torch used in the example device, FIG. 5 is a view showing the remaining material holding state by the example device, and FIG. FIG. 7 is a diagram showing the remaining material in the holding state, FIG. 7 is a diagram showing the remaining material in the cutting state by the apparatus of the embodiment, FIG. 8 is a diagram showing the remaining material in the cutting state,
FIG. 9 is a diagram showing the remaining material welded by the embodiment apparatus, FIG. 10 is a diagram showing the remaining material in the welding state,
FIG. 11 is a cross-sectional view showing the remaining material bonded by the apparatus of the embodiment. P...Press machine, m...Remaining material, 3...Lower mold, 4
...Strut, 6...Upper mold, 9...Remaining material holding device, 1
0... Spring (elastic body), 12... Shearing upper blade,
13... Shearing lower blade, 15... Spring (elastic body), 17... Work base drive cylinder (remaining material drive device), 21... Guide member, 22... Arm member, 25... Arm drive device, 26 ...High frequency daig welding torch.

Claims (1)

[Scope of claim for utility model registration] An upper mold, a lower mold, and a support that guides the upper mold in a vertically movable manner are provided, and the end of the remaining material after the shaped member has been extracted from a steel plate of a coil material or a sealing material. A pair of upper and lower blades capable of cutting the remaining material in a straight line are provided parallel to the upper mold and the lower mold, respectively, and residual material holding devices having holding surfaces capable of holding the residual material on the same plane face each other. At the same time, the pair of upper and lower blades are provided so as to be movable back and forth in a direction orthogonal to each other, and the residual material holding device is made of an elastic material and is elastically configured to keep the residual material away from the lower mold except when cutting the residual material. When the upper die is held and descends against the spring force of the elastic body,
An arm member is formed so that the holding surface and the upper surface of the lower blade are flush with each other when cutting the remaining material by contacting and pushing the lower surface of the upper mold, and is attached to the support in parallel with the pair of upper and lower blades. A guide member is provided to guide the welding machine, and a welding torch that can be placed between the pair of upper and lower blades is attached to the tip of the arm member. A welding device for residual steel plates having the above features.