JP2794935B2 - Heating plate joining method and apparatus - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a method and an apparatus for joining a hot plate in a hot rolling line or the like so that two hot plates are joined and made continuous. It is.

[Prior Art] A method of joining a preceding heating plate and a following heating plate by hot rolling is known from Japanese Patent Application Laid-Open No. 61-176483.

[Problems to be Solved by the Invention] However, since an oxide film is easily formed on the surface of the hot-rolled material, there has been a problem that the required joining strength cannot be easily obtained by the conventional joining method.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and an apparatus for bonding a heating plate, which can perform a strong bonding without forming an oxide film on a bonding surface.

[Means for Solving the Problems] In the heating plate joining method of the present invention, the rear end of the preceding heating plate and the front end of the following heating plate are overlapped, and the overlapped portion is vertically sheared. After the surfaces are rubbed, the shearing surface of the subsequent heating plate is pressed against the shearing surface of the preceding heating plate. Two sets of clamps provided adjacent to each other for sandwiching the overlapped portion at the front end of the row heating plate, a shearing blade attached to the two sets of clamps, and the two sets of clamps are individually described above. A movement driving device for moving the overlapped portion in the shearing direction, a third clamp provided on the subsequent heating plate side of the two sets of clamps, for holding the subsequent heating plate, and heating the third clamp in advance. And a pressing device for pressing the plate toward the plate.

[Action] When the overlapped portion of the preceding heating plate and the following heating plate is sheared by two sets of clamps and one of the sets of clamps is moved up and down, the sheared surface and the new surface come into contact with each other, and the third clamp Then, when the shear plane of the subsequent heating plate is pressed against the shear plane of the preceding heating plate, the preceding heating plate and the following heating plate are firmly joined.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal sectional side view of one embodiment of a heating plate joining apparatus according to the present invention, in a state where a rear end 1a of a preceding heating plate 1 and a front end 2a of a following heating plate 2 are overlapped. , On the roller 3 to the right in FIG. The overlapping portion 4 of the rear end 1a and the front end 2a is clamped from above and below by two sets of clamps 5, 6 and clamps 7, 8 provided adjacent to the clamps 5, 6. It has become so. Shear blades 9 and 10 are attached to the clamps 5 and 6, and shear blades 11 and 12 are attached to the clamps 7 and 8, and the shear blades 9 and 11 are slidably in contact with each other. Shear blade 1
0 and 12 also slidably contact each other. And clamps 5,6
Are moved up and down by operation of cylinders (moving drive units) 13 and 14, and clamps 7 and 8 are moved up and down by operation of cylinders (movement drive units) 15 and 16.

Third clamps 17, 18 are provided at positions slightly away from the two sets of clamps 5, 6, 7, 8 on the side of the subsequent heating plate 2. The third clamps 17, 18 can hold the subsequent heating plate 2 by the operation of the cylinders 19, 20 and can be displaced horizontally by cylinder pressing devices 21, 22 provided horizontally. Has become. In addition, the entire apparatus can travel in the direction of movement of the plates 1 and 2 along the rails 35 by the drive unit 34.

In the apparatus shown in FIG. 1, the clamps 5, 7 and the third clamp 17 are raised, and the clamps 6, 8 and the third clamp 18 are lowered. 17 and the clamps 6, 8 and the third clamp 18, between the rear end 1a of the preceding heating plate 1 and the front end 2a of the subsequent heating plate 2.
Are moved from left to right in FIG. The overlapping portion 4 of the rear end 1a and the front end 2a is a clamp 5,
7 and the clamps 7 and 8, the movement of the preceding heating plate 1 and the following heating plate 2 to the right is stopped, and two sets of clamps 5, 6, 7, 8 as shown in FIG. To hold the overlapping portion 4.

Next, as shown in FIG. 3, the clamps 5 and 6 of one set are fixed, and the clamps 7 and 8 of the other set are moved downward. The movement of the clamps 7, 8 is a movement in the shearing direction with respect to the overlapping portion 4, and the cylinders 15, 16 shown in FIG. 1 function as means for moving the clamps 7, 8 in the shearing direction.
The preceding heating plate 1 and the following heating plate 2 are sheared by the shearing blades 9, 10, 11, 12 at the overlapping portion 4.

The subsequent heating plate 2 descends by the thickness thereof, and the shear surface 1b of the preceding heating plate 1 and the shear surface of the subsequent heating plate 2 as shown in FIG.
The downward movement of the clamps 7, 8 is stopped when they face each other.

Next, as shown in FIG. 5, the subsequent heating plate 2 is held between the third clamps 17 and 18, and the third clamps 17 and 18 are pressed toward the preceding heating plate 1. In this case, the cylinders 21 and 22 shown in FIG.
Function as means for pressing the third clamps 17, 18 toward the preheating plate 1. At the same time, clamp
7, 8 are slightly loosened, and the clamps 5, 6 are moved up and down with a small amplitude and a high vibration frequency to rub the shear surface 1b of the preceding heating plate 1 with the shear surface 2b of the following heating plate 2. This gives shear surface 1
Even if a minute oxide film is interposed in a and 2b, the oxide film escapes out of the sheared surfaces 1b and 2b, and the sheared surfaces 1b and 2b become only the new surface, and the sheared surfaces 1b and 2b are generated by frictional heat. The temperature will rise. In this case, the cylinders 13 and 14 in FIG. 1 serve as means for moving the clamps 5 and 6 in the shearing direction of the overlapped portion 4.

Next, the up and down operations of the clamps 5 and 6 are stopped, and as shown in FIG.
The second clamps 17 and 18 are strongly pressed toward the preheating plate 1 with the second clamps 2b facing each other. In this case, the cylinders 21 and 22 shown in FIG. 1 are used as means for strongly pressing the third clamps 17 and 18 toward the preheating plate 1, and the third clamp 17 is provided by a hammer 23 as shown in FIG. 17 may be shocked. As a result, the sheared surface 1b of the preceding heating plate 1 and the sheared surface 2b of the subsequent heating plate 2 are firmly joined to each other on the new surfaces without an oxide film interposed therebetween.

FIG. 7 shows another embodiment of the present invention, in which a notch plate 24 is once interposed between the rear end 1a of the preceding heating plate 1 and the front end 2a of the following heating plate 2. Reference numeral 25 denotes a mechanism for inserting and removing the notch plate 24. The front surface and the back surface of the notch plate 24 are vertically arranged, and ridges 26 and 27 having a triangular cross section project in the shearing direction of the subsequent heating plate 2 and the shearing direction of the preceding heating plate 1.

As shown in FIG. 2, the notch plate 24 clamps the rear end 1a of the preceding heating plate 1 and the front end 2a of the following heating plate 2,
When sandwiching between 6, 7 and 8, once the rear end 1a of the preceding heating plate 1
And the front end 2a of the subsequent heating plate 2.

After the notch plate 24 is interposed and the rear end 1a of the preceding heating plate 1 and the front end 2a of the following heating plate 2 are clamped by the clamps 5, 6, 7, and 8, the clamps 5, 6, 7, and 8 are clamped. When the notch plate 24 is released from the rear end 1a of the preceding heating plate 1 and the front end 2a of the succeeding heating plate 2 by the insertion / removal mechanism 25, as shown in FIG. Grooves 30 facing the inclined surfaces 28 and 29 are formed on the upper surface, and grooves 33 having inclined surfaces 31 and 32 are formed on the lower surface of the subsequent heating plate 2. Then, the grooves 33, 30 which clamp the preceding heating plate 1 and the following heating plate 2 with the clamps 5, 6, 7, 8 are vertically overlapped.

Next, in the same manner as in FIG.
While the other is clamped, the other pair of clamps 7, 8 is moved downward, and the overlapping portion 4 is sheared so as to match the grooves 33, 30. As a result, as shown in FIG. The shear surface 2b of the plate 2 is rubbed upward, and the inclined surface 31 is the shear surface of the pre-heating plate 1.
Shearing is performed while rubbing 1b downward, and the oxide film interposed between the shearing surfaces 1b and 2b is wiped off and the shearing surface becomes a new surface
1b and 2b will touch each other. Subsequently, FIG. 5 and FIG.
By performing the operation described with reference to the drawing, the preceding heating plate 1 and the following heating plate 2 are bonded very firmly between the new surfaces without an oxide film interposed therebetween.

[Effects of the Invention] In the present invention, since the shearing surface of the preceding heating plate and the shearing surface of the following heating plate are rubbed against each other, they are pressed against each other. And can be firmly joined.

[Brief description of the drawings]

FIG. 1 is a longitudinal side view of one embodiment of the apparatus of the present invention, FIGS. 2 to 6 are schematic side views showing how to use the apparatus of FIG. 1, and FIG. 7 is another method of the present invention. FIGS. 8 and 9 are longitudinal side views of a preceding heating plate and a succeeding heating plate when the device of FIG. 7 is used. In the figure, 1 is a preceding heating plate, 1a is a rear end portion, 1b is a shearing surface, 2 is a succeeding heating plate, 2a is a front end portion, 2b is a shearing surface, 5, 6, 7, 8 is a clamp, 9, 10 , 11,12 are shearing blades, 13,14,15,16 are moving drive units (cylinders) that move in the shearing direction, 17,18 are third clamps, 21,22 are pressing against the preceding heating plate 1 shows a device (cylinder).

Claims (2)

(57) [Claims] 1. A front end portion of a preceding heating plate and a front end portion of a following heating plate are overlapped with each other, and the overlapped portion is sheared up and down to rub the sheared surface. A method of joining heating plates, comprising pressing a shearing surface of a subsequent heating plate to the heating plate. 2. A pair of clamps provided adjacent to each other for sandwiching a superposed portion of a rear end portion of a preceding heating plate and a front end portion of a succeeding heating plate, and are attached to the two sets of clamps. A shearing blade, a movement driving device for individually moving the two sets of clamps in the shearing direction of the overlapped portion, and a clamp provided on the trailing heating plate side of the two sets of clamps to clamp the trailing heating plate. A heating plate joining device, comprising: a third clamp; and a pressing device that presses the third clamp toward the preceding heating plate.