JP3202445B2 - Inlet clamping device for strip welding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inlet clamping device of a welding machine for connecting a preceding strip and a following strip in a continuous strip processing line.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional example of connection between a leading strip and a succeeding strip in a continuous processing line for strips such as steel strips.
FIG. 4 shows a carousel-type payoff reel described in JP-A-60-97155.
5 and 16 are provided on the revolving reel 14, and by revolving, the pay-off reels 15, 16 can be operated at different positions.

In such a conventional technique, a cutting machine is provided on the entrance side of the welding machine, and a clamping device is provided on the entrance side and the exit side. The part was cut and clamped by an entry side clamp device to perform welding.

[0004]

In the prior art,
As shown in FIG. 4, since the portion from the payoff reel to the welding machine is composed of a long pass line of two stages, there is a problem in threading property of the strip and maintenance property of the line. If the line length is long, space and equipment construction are disadvantageous.

SUMMARY OF THE INVENTION The object of the present invention is to provide a plurality of functions for an inlet-side clamping device of a welding machine for connecting a preceding strip and a following strip in a continuous processing line for strips such as steel strips, and to reduce the size of the line. And

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an upper clamp plate, an intermediate clamp plate, a lower clamp plate, an opening / closing mechanism between the upper clamp plate and the intermediate clamp plate, and an intermediate clamp plate and a lower clamp plate. In a clamping device having an opening and closing mechanism between the side clamp plates, one of the pinch rolls is provided at the leading end of the intermediate clamp plate on the entry side, and an offline shift mechanism for the intermediate clamp plate and the pinch roll is provided. This is the inlet clamp device of the strip welding machine.

[0007] It is preferable to provide a side guide and an off-line shift mechanism for the side guide on the entry side of the pinch roll. Also, the intermediate clamp plate and the pinch roll are divided into two at the center, and each of the divided off-line is divided. Preferably, a shift mechanism is provided.

[0008]

The present invention will be described below in detail with reference to the drawings. FIG. 1 shows a cross section in the line direction of an example of the apparatus of the present invention, and FIG. 2 shows a cross section in the direction perpendicular to the line (AA cross section in FIG. 1). Opening and closing between the upper clamp plate 2 and the intermediate clamp plate 3 is performed by moving the upper clamp plate 2 up and down with a cylinder 8 as shown in FIG. Opening and closing between the intermediate clamp plate 3 and the lower clamp plate 4 is performed by moving the intermediate clamp plate 3 up and down with a cylinder 9 as shown in FIG.

At the leading end of the intermediate clamp plate 3 on the entry side, FIG.
As shown in FIG. 1, a lower roll 6 of a pinch roll is provided, and an upper roll 5 is supported by a cylinder 10 so as to be able to move up and down. The intermediate clamp plate 3 and the lower roll 6 of the pinch roll are divided into two parts at the center as shown in FIG. 2, each of which is connected to the bogie 11 via the support column 13, and the bogie 11 is moved in the horizontal direction (arrow in FIG. By shifting to ()), an offline shift can be performed. Reference numeral 7 in FIG. 1 denotes a side guide, which can be adjusted in position according to the width of the band plate 1 by a mechanism such as a cylinder (not shown).

The band plate 1 is positioned in the width direction by the side guides 7, and the cylinder 10 is operated, and the upper roll plate 5 and the lower roll 6 of the pinch roll are used to move the upper clamp plate 2.
And the intermediate clamp plate 3. During the passing, the upper roll 5 is lowered. When clamping, the cylinder 8 is operated to lower the upper clamp plate 2.

At the time of shifting from the embodiment shown in FIG. 3 to the embodiment shown in FIG.
When changing between the lower clamp plate 4 and the carriage 11, the carriage 11 shown in FIG. 2 is moved right and left, and the intermediate clamp plate 3 and the lower roll 6 are shifted off-line. After the pass line of the band plate 1 is changed downward, the intermediate clamp plate 3 and the lower roll 6 of the pinch roll are in-line shifted and returned to the original position.

The apparatus of the present invention is not limited to the examples shown in FIGS. 1 and 2, and the clamp can be opened and closed by moving any one of the clamp plates 2, 3, and 4. The moving mechanism is also a cylinder. In addition, other mechanisms such as electric motors can be adopted. Further, the offline shift of the intermediate clamp plate 3 and the pinch roll may be shifted to one side without being divided.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example in which a strip coil is unwound and welded with a carousel type payoff reel by applying the apparatus of the present invention will be described with reference to FIG. Is a leading band passing process, and the leading band 2
2 is unwound from the payoff reel 15 and is passed through with the pre-stage pinch roll 17, the input side clamp 18, the welding machine, and the output side clamp all open. Is a trailing strip strip clamping step, during the passing of the preceding strip strip 22, the coil of the trailing strip strip 23 is unwound from the payoff reel 16, guided by the leading end conveying device 21 to the entry side clamp 18,
It is clamped by the upper clamp plate 2 and the intermediate clamp plate 3. Is a welding process. First, the leading strip 22 is stopped,
It clamps with the entrance side clamp 18 and the exit side clamp 20. In the entry side clamp 18, the preceding band plate 22 is clamped by the intermediate clamp plate 3 and the lower clamp plate 4 while the trailing band plate 23 is clamped by the upper clamp plate 2 and the intermediate clamp plate 3. Next, a cutting machine (not shown) built in the welding machine 19.
To cut the leading strip 22 and weld it to the trailing strip 23.

The following is a start process of a succeeding strip, in which the entrance side clamp 18 and the exit side clamp 20 are opened to start passing, the remaining coil of the preceding strip 22 is unwound, and cut and removed by the crop shear 24. . Is an off-line shift step, in which the intermediate clamp plate 3 of the entry side clamp 18 and the upper roll of the preceding pinch roll 17 are off-line shifted. Is a revolving process, in which the revolving roll 14 revolves. Is an in-line shift step in which the intermediate clamp plate 3 and the upper roll of the preceding pinch roll 17 are shifted in-line. Then, the next coil is inserted into the payoff reel, and the process returns to the step.

[0015]

According to the apparatus of the present invention, in the continuous processing line for strips such as steel strips, the input side clamping device of the welding machine for connecting the preceding strip and the following strip has a pinch roll function, It also has a guide function, making the line more compact. Therefore, the problems of threading of the strip and maintenance of the line are improved, which is advantageous in terms of space and equipment construction.

[Brief description of the drawings]

FIG. 1 is a sectional view of the device of the present invention.

FIG. 2 is a cross-sectional view of the device of the present invention, and is a view taken along the line AA in FIG.

FIG. 3 is an explanatory diagram showing an embodiment of the present invention.

FIG. 4 is an explanatory diagram of a conventional device.

[Explanation of symbols]

 1: Strip plate 2: Upper clamp plate 3: Intermediate clamp plate 4: Lower clamp plate 5: Pinch roll upper roll 6: Pinch roll lower roll 7: Side guide 8, 9, 10: Cylinder 11: Dolly 12: Wheel 13 : Support 14: Revolution Reel 15, 16: Payoff Reel 17: Front Pinch Roll 18: Inlet Clamp 19: Welding Machine 20: Outlet Clamp 21: Leading Conveyor 22: Leading Strip 23: Trailing Strip 24: Crop Shear 25: Double cut shear 26: Double pinch roll

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B21B 15/00 B21C 47/18 B65H 19/10

Claims (3)

(57) [Claims] 1. A clamp device having an upper clamp plate, an intermediate clamp plate, a lower clamp plate, an opening / closing mechanism between the upper clamp plate and the intermediate clamp plate, and an opening / closing mechanism between the intermediate clamp plate and the lower clamp plate. Provide one roll of pinch roll at the leading end of the
An inlet-side clamping device for a strip welding machine, wherein an off-line shift mechanism for an intermediate clamp plate and a pinch roll is provided. 2. The inlet-side clamping device for a strip welding machine according to claim 1, wherein a side guide and an off-line shift mechanism for the side guide are provided on the inlet side of the pinch roll. 3. The inlet clamp of a strip welding machine according to claim 1, wherein the intermediate clamp plate and the pinch roll are divided into two parts at a central portion, and the divided off-line shift mechanisms are provided. apparatus.