JPS591085A - Welding machine for connecting coils - Google Patents

Abstract

PURPOSE:To obtain exact butting accuracy in the state of welding the end parts of both preceding and succeeding coils, by trimming the cut surfaces of the coils by turning or grinding in succession to the cutting thereof. CONSTITUTION:The end of a preceding coil and the top of a succeeding coil are clamped respectively by means of upper and lower clamps 20a, 21a provided to a clamping device 1a on a stationary base side and a clamping device on a movale base side. Traveling for cutting is started together with a carriage 8 by which roll shears 4, 4' are driven; at the same time, a grinding device 19 mounted to a shear frame 6 travels as well and a grinder 5 grinds the end faces of the coil cut with the shears 4, 4'. The carriage 8 stops upon ending of the cutting and grinding, and the frame 6 is moved downward. The clamping device of the movable carriage advances to butt the ground surfaces of the preceeding and succeeding coils, and a welding torch 14 is driven to the welding start point by a torch carriage 16, by which the welding is started. The device 1a is released when the welding ends, and the coil begins to travel.

Description

[Detailed Description of the Invention] The present invention is a novel device that has an unprecedented function as a welding machine for fill butt connection, and is used in various processes that require butt bath welding of coils of steel plates, stainless steel, non-ferrous materials, etc. Relates to calendar welding machine for sig line.

Conventionally, when 'rxa M welding has been used as a method for connecting fill materials, the most important point has been how to accurately butt the ends of the fill.

For this purpose, the ends of both the leading and trailing coil materials g! After cutting the edges with the nfC shear built into the welding machine with the coils still attached to each clamp, both end faces of the preceding and following coil materials are cut by moving one clamp to the other clamp. They were butted together accurately and 'L''lG bath welding was performed.

In order to perform this accurate matching, two conditions must be satisfied. Part 1. Secondly, it is necessary to ensure the accuracy of the cutting by the shear, and the accuracy of the movement of the movable table when moving the two cranks 1 together.

Conventionally, either a guillotine type shear or a roller shear gave has been used built-in to a welding machine for coil connection.

These Shah 1c! The precision of the cut surface of the coil material
In general, steel plates have a tendency to be difficult to machine as shown in Figure 1.For this reason, steel plates have a VC edge with a jar rake.

As the steel plate is cut sequentially from one side, a twist occurs in the steel plate. As the uncut length becomes shorter, twisting due to the electric resistance stitching VC of the cut piece is also added, creating a state where stress is generated in the direction of floating at the final cut end, and as a result, as it approaches the final end,
It is thought that there is a direction around 1 where the cutting line runs away. This relief hKU varies depending on the plate thickness, material, tensile strength, clamping method used during cutting, etc., but if the -PIJ of a mild steel material cut with a shear with a rake angle of ]0 is increased by clamping firmly, the -PIJ will be 1. 6t

A piece of wood made by butting together end faces with such cut surfaces.

Accurate butting conditions cannot be obtained over the entire bath tangent length. .

Also, if the rake angle is set to 0°, the cutting accuracy will be improved.However, although this L-shaped shear is suitable for cutting extremely thin sheets of narrow coil material, The L eel one-go Vc, which has a plate thickness of several millimeters with a wide fill of several hundred to several thousand millimeters, has a beautiful shear stress.

A huge gate-shaped structure was mounted to withstand this, making it unsuitable for use as an actual machine.

° For one roller shear, the shear line is arc-shaped, so it is difficult to accurately express the rake angle, but since the cut is made at a small convergence with a V-angle, the cutting line is as described above. This causes an escape like this.

In the present invention, a device that is mechanically structured in a simple manner and that performs complete cutting and grinding of the end face of a coil material cut with an edge by a roller shear can be placed close to each other, and this is a prerequisite for accurate butting. The purpose is to provide a small and new device that can obtain a butt surface with good accuracy as a condition.

An embodiment of the present invention will be explained with reference to the drawings. FIG. 2 shows a side view of a bath welding machine for connecting coils, and FIG. 3 shows a front view.

A clamping cylinder 2a'2b, etc., is attached to each of the gluing device 2 on the fixed side and the clamping device 6 on the moving side Jbσ.

The movable side clamp Jb ij is installed on the index cylinder 3 to perform a forward movement for butting and a backward movement for returning to the original (q) position.

A roller shear 4.4' and five grinders are mounted on a shear frame 6, and these are attached to a carriage 8 driven by a cylinder 7vcL so as to be able to move up and down, and are actuated by a cylinder 9.

Cart 8 L/-7+/] Oa, 101) O-ra II, 11'.

12a, 12a', 12b113a, 13'a, 13b
The kite is used to perform operations such as cutting, running for grinding, and returning to the original position.

It is a 14TI'i bath toner and a '1'IG laser bath torch. This torch is attached to a torch carriage 6 via a position adjustment mechanism 15, and a carriage 161dliK driving motor 7 performs bathing and returning to the original position.

FIG. 4 shows details of the roller shear 4, 4' and the grinding device 9 which are mounted on the shear frame 6.

5.5't-t grinder% 18 indicates a grinder driving motor.

FIG. 5 is a detailed sectional view taken along line AA in FIG. 7 of the grinding device 19. The grinder 5.5' is driven by a motor 38K. It is divided into 7
'C (ru material 22a, 22b 17) end face 23a, 23
b k Grind.

The operation of the coil connection bath welding machine according to the present invention will be explained with reference to FIG.

End 22a of the leading coil and top 22 of the trailing coil
b between fixed stands j? j and moving platform side glue pump device 1a, ]bvC, provided upper and lower cranes 720a, 2
]a and 20b, 2]bvc to clamp/) (same figure a→same figure b).

Next, the roller shears 4 and 4' start cutting together with the cart 8- powered by the cylinder 7, and at the same time, the grinding device #9 attached to the shear frame 6 and the grinder 5.5' The roller shear 4.4' grinds the cut end faces 23a, 23b of the cut coils 22a, 22b while running simultaneously.

6(C) and (d) proceed simultaneously in the situation shown in FIG. 7.

At the end of cutting and grinding, the cart 8 stops and the shear frame 6
The entire machine for cutting and grinding is placed in the cage 11 and holder 9.

The lower part 2]a, 2]M is lowered to a lower position^.

Next, the clamp group #1b on the movable table side is moved forward by the index cylinder 3, and the leading and trailing inner coiled grinding surfaces 23a,
23b (see figure e).

At this time, since both surfaces 23a and 23b are ground surfaces instead of the conventional shear surfaces as shown in FIG. 1, the tangent line spanning the width of the coil can be linearly matched with zero gap.

Next, the bath welding torch j4 is driven by the torch carriage ]6 to the bath welding start point, and bath welding is started from there (
Figure f). At this time, although it is not shown in the illustration, when using the TIG bath, use the back bar) ^. However, in the case of laser bath welding, the butt is perfect, so this is not always necessary.

After bath welding, open the clamps Nla and lb and start threading the coil. The lamp device on the side of the movable table is moved back to the index cylinder 3, and the trolley Sμ shear 7 tray b6 is pulled down by cylinder 9. It is retreated to its original position, and then the shear 7 tray k is raised by cylinder 9 for the next operation. to 1
It can be supplemented.

In the VC of this embodiment, the coil end faces 23a and 23b were ground with a grinder, but it would be possible to use a cutter instead of a knife.

In any case, since the grinding allowance and the cutting allowance are only about 3 mm at most, it is possible to obtain a sufficient length of service life during regular operation.

The above is the invention of the present invention.V'! After the coil is cut by the roller shear of the coil connection bath welding machine, the cut surface is shaped by cutting or grinding.

It is possible to obtain a perfect butting accuracy over the entire bath length, and a good and stable bath contact result can be obtained.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the cut shape of a coil cut with a shear. Fig. 2 is a side view of a coil connection bath welding machine embodying the present invention, and Fig. 3 is a front view of the same. Fig. 4 is a side view of a bath welding machine for coil connection in which the present invention is implemented. FIG. 5 is a sectional view of the grinding device 9, and FIG. 6 is an explanatory diagram of the main operations of the coil connection bath welding machine according to the present invention. FIG. (cl, (d) An explanatory diagram showing the v operation in a plan view. Reference numeral 1a in the drawing...Fixed side clamping device 1b...Moving side clamping device 2a, 2a', 2b-a-kujin 7'' J)
Soda 3... Index cylinder 4.4'... Row 27 Yar 5.5'... Grinder 6... Shear frame 7... Cart 8 Feed cylinder 8... Cart 9... Shaf V -M upper and lower cylinder ] Oa, ]
Ob...Kite rail]], IJ'...Guide roller 12a, 121)-=13a, 13b...o-2]
4...Bath contact torch 16...Torch carriage 17...Torch carriage electric motor]8...Grinder drive motor]9...Grinding device 20a, 20b, 2]a, 21b---Claim 77 '22
a... Leading coil 2゛2b... Trailing coil 23a, 23b... Coil end face Patent applicant Dengensha Seisakusho No. 2 Co., Ltd.
Figure 5) Figure 7

Claims (1)

[Claims] A fixed side clamp device and a moving side clamp device are provided for clamping each end of the coil material between the leading and trailing rows, and clamps L and 7'C both cut the ends of the coil material. The index cylinder that advances the low 2 shear, its driving cart, and the movable crank unit. In a coil connection welding machine equipped with a welding torch for welding the butt portions of both fill materials in bath contact and a driving device thereof, a device for cutting or grinding the end face of the coil is placed close to the roller shear. , a bath welding machine for fill connection, which is characterized in that it moves along with the cutting movement of the roller shear.