JPH02255202A - Edging method and edging press - Google Patents

Abstract

PURPOSE:To decrease the vertical shift quantity, mounting surface, weight, etc., of the die of an integral type formed with plural pressurizing surfaces by vertically shifting the die successively and executing edging. CONSTITUTION:The die 15 is successively shifted upward or downward by a lifting device 11 and a screw down driving device is driven to attach and detach the die 15 mounted to a die holder 8 to and from the side part of a slab 1 via a press slide 12. The slab is then edged by any of the pressurizing surfaces 17, 18, 19 of the die 15. Since the section distance at which the respective surfaces 17, 18 face each other is smaller than in the conventional embodiments, the height H1 of the die 15 can be decrease. The vertical shift quantity of the die 15 is, therefore, decreased and the weight is reduced. The size over the entire part or the press is thus reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for width reduction of a slab in a rolling line or the like and a width reduction press apparatus.

[Prior art] When a slab is width-reduced using a width-reducing press device installed downstream of a continuous casting line or upstream of a rolling line, a mold having multiple slab pressing surfaces is used to extend the life of the mold. A method of width reduction is used.

As a conventional example of such width reduction method, Japanese Patent Application Laid-Open No. 62-28
As shown in FIG. 7, the device described in the No. 2738 publication stacks a plurality of pairs (two pairs in the figure) of mold bodies 3a and 3b of the same shape facing each other across the conveyance path line 2 of the slab l. A mold 3 is provided, and a width reduction surface 4.5 of each of the plurality of pairs of mold bodies 3a, 3b is provided with one spot at a predetermined distance from the upper and lower surfaces of each mold body 3a, 3b. (Fig. 8), the molds 3 are stacked and held in a mold holder 8, and the molds 3 are stacked so as to be able to shift the mold holder 8 up and down. The lower end of a lifting device 11 such as a lifting cylinder is attached to a member 9 fixed to the upper part of the mold holder 8 via a bottle 10, and the lifting device 11
The upper end of the slab 1 is removed by a width reduction drive device (not shown).
Press slide I2 capable of reciprocating in the width direction
The mold holder 8 can be moved up and down along the press slide 12 by the lifting device 11, and the mold can be moved up and down through the press slide 12 and the mold holder 8 by the width lowering drive device. 3 is moved close to and away from the slab 1 so that the width of the slab 1 can be reduced.

In the above apparatus, when width-reducing the slab l, each time a predetermined width-reducing step is completed, the plurality of pairs of mold bodies 3a, 3b are
are alternately shifted up and down by the lifting device 11.1.1 to perform width reduction on each pressure surface 6.7.

[Problems to be Solved by the Invention] However, according to the above-mentioned conventional apparatus, when width-reducing the slab 1, multiple pairs of laminated mold bodies 3a, 3b are pressed against each pressing surface for each predetermined width-reducing process. The following problems occurred because the values were shifted up and down alternately between 6 and 7.

(D As shown in Fig. 8, it is necessary to leave a certain distance between the pressurizing surfaces 6.7 and the upper and lower surfaces of each mold body 3a, 3b, so the upper and lower pressurizing surfaces 6.7 The distance between the sides increases to 2L, which inevitably increases the amount of vertical shift of the mold 3, and also increases the height Ho of the entire mold 3 (Figs. 7 and 8). 3.The overall weight increases.

(ID) Therefore, the elevating device 11 and the like become larger, and the time required for switching up and down shifts becomes longer.

(2) Since the mold bodies 3a and 3b are separated, the rigidity of the individual mold bodies 3a and 3b tends to be insufficient.

■ Pressure is applied by the upper and lower pressure surfaces 6, 7 of each mold body 3a, 3b, so the pressure surfaces 6, 7 are likely to wear out.
has a short lifespan.

The present invention has been made with the object of solving the above-mentioned problems, improving the operating rate, and providing a width reduction method and width reduction press device that can downsize the device.

[Means for Solving the Problems] The width reduction method of the first invention involves raising and lowering integral molds arranged so as to face each other across the conveyance path line of the slab. The width reduction press device of the second invention is characterized by sequentially switching the slab abutting surface and moving the mold toward and away from the side of the slab to reduce the width of the slab. , an integral mold having a plurality of pressurizing surfaces facing in the vertical direction, which are disposed so as to face each other across the slab conveyance path line so as to be able to approach and move away from the sides of the slab, and the integral mold. The mold is characterized by being equipped with an elevating device for elevating and lowering the mold.

[Function] Since width reduction is performed by sequentially shifting up and down an integral mold in which a plurality of pressure surfaces are formed, it is possible to reduce the vertical shift 14, mounting surface, weight, etc. of the mold.

[Example〕 Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 show an embodiment of the apparatus of the present invention for carrying out the method of the present invention, the basic structure of which is the same as that shown in FIGS. 7 and 8; Parts with the same reference numerals as in FIGS. 7 and 8 represent the same parts.

A pair of integral molds 15 are provided which face each other across the conveyance path line 2 of the slab 1, and the width reduction surface 1 of the molds 15 is provided.
6, pressurizing surfaces 17.6 for the slab 1 are placed at least at two locations at a certain distance from the upper and lower surfaces of the mold 15.
18, and the steps M L + (FIG. 2) between the opposing sides of the pressure surfaces 17.18 are made smaller than twice the distance, and between the pressure surfaces 17.18 , forming an intermediate pressure surface 19 that partially overlaps the pressure surface 17,18.

When rolling down the width of the slab 1, the mold 15 is sequentially shifted upward or downward by the lifting device ll, and the rolling drive device is driven to move the mold 15 attached to the mold holder 8 via the press slide 12 into the slab l. The width of the slab I is reduced by any one of the pressure surfaces 17, 18, and 19 of the mold 15.

As mentioned above, the distance L+ between opposing sides of each pressure surface 17.18 (see FIG. 2) is equal to the distance between opposing sides of each pressure surface 6.7 shown in FIG. 8 of the conventional example (2L). ), the height Hl of the mold 15 (FIGS. 1 and 2) can be made smaller than the height H8 of the mold 3 in FIGS. 7 and 8.

Therefore, the vertical shift amount of the mold 15 by the lifting device 11 becomes smaller, the mounting surface of the mold 15 becomes smaller, and the weight of the mold 15 is also reduced. This makes it possible to reduce the size of the width reduction press as a whole, shorten the vertical shift time, and facilitate and speed up the switching of the pressurizing surface 17° and 18.19 of the mold 15.

Furthermore, since the mold 15 is integrated, sufficient rigidity can be obtained, and since the pressure surfaces 17, 18, and 19 are used almost uniformly during width reduction, the progress of wear of the mold 15 is slowed down. ,
The service life of the mold 15 is extended, and the number of times the mold 15 is replaced can be reduced.

3 to 5 show another embodiment of the apparatus of the present invention for carrying out the method of the present invention, in which a vertical groove 28 is provided on the surface of the press slide 12 on the slab 1 side, and the vertical groove 28 is provided with a vertical groove 28. , Figure 4 (
A) As shown in (B), a guide clamp 29 with a T-shaped horizontal cross section is attached, a vertical groove 30 is provided on the surface of the mold holder 8 on the opposite side to the slab, and the mold holder 8 is guided through the vertical groove 30. Fitted into the clamp 29 so as to be able to rise and fall freely, the lifting device 11 is arranged in a position that does not interfere with the mold holder 8 and the mold I5 when viewed from above, and is fixed to the front and back of the mold holder 8 in the two directions of the conveyance path line. The rod 32 of the lifting device 11 is attached to the bracket 31
Concatenate.

The guide clamp 29 is fixed to the press slide 12 with a bolt 33 as shown in FIG. 4(a), or a clamp cylinder 34 is provided on the press slide 12 as shown in FIG. The contact surface of the vertical groove 30 of the mold holder 8 is made into a tapered shape, and the mold holder 8 can be fixed to the press slide I2 by pushing and pulling the guide clamp 29 with the clamp cylinder 34.

Further, the tip of the rod 32 is engaged with a spherical seat 35 that contacts the upper and lower surfaces of the bracket 31, so that even if the mold holder 8 is slightly out of center, no unreasonable force is applied to the drive device 11.

Even if configured as described above, the drive device 1
1, the mold 15 is raised and lowered via the mold holder 8, and the pressure surfaces 17, 18, and 19 of the mold 15 are sequentially switched to perform width reduction pressing.

In addition, when replacing the mold 15, the mold holder 8 is suspended by a crane and the engagement between the rod 32 and the bracket 31 is released. Exchanges can be made. Therefore, the mold can be replaced easily and quickly.

FIG. 6 shows another example of the mold used in the present invention. In this example, upper and lower molds 20.2+, each of which has oppositely opened sloped surfaces, are fitted with the above-mentioned mold to enable reverse width reduction. Similarly to the mold 15 shown in 312M, the pressurizing surfaces 22, 2
3, 24, 25, 26, and 27.

When the molds 20 and 21 are width-reduced in the forward or reverse direction by a width-reducing device (not shown), each mold 20, 21 is sequentially shifted upward or downward by an elevating device (not shown). ” Width reduction can be performed in the same manner as in the first embodiment.

[Effects of the Invention] As explained above, according to the present invention, since the amount of vertical shift of the mold is reduced, it is possible to downsize the device, and since the number of pressurizing surfaces of the mold can be three or more, Various excellent effects can be achieved, such as extending the life of the mold, reducing line stoppage time, improving production efficiency, and improving the rigidity of the mold.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the apparatus of the present invention for carrying out the method of the present invention, FIG.
FIG. 3 is a perspective view showing another embodiment of the apparatus of the present invention for carrying out the method of the present invention, FIG. 6 is a perspective view of another example of the mold applied to the present invention, FIG. 7 is a perspective view of a conventional example, and FIG. It is a view in the direction of ■-■. In the figure, 1 is a slab, 2 is a conveyance path line, 11 is a lifting device, 12 is a press slide, 15.20.21 is a mold, 1
B is the width reduction surface, 17.1.8.19, 22, 23.24
, 25.26°27 indicates the pressure surface.

Claims (1)

[Claims] 1) The integrated molds arranged to face each other across the conveyance path line of the slab are raised and lowered to sequentially change the contact surface of the pressurizing surface of the mold with the slab. . A width reduction method characterized in that the width reduction of the slab is performed by moving the mold toward and away from the sides of the slab. 2) An integrated mold having a plurality of pressurizing surfaces facing up and down and arranged so as to face each other across the slab conveyance path line so as to be able to approach and move away from the sides of the slab, and the integrated mold. A width reduction press device characterized by being equipped with an elevating device for elevating and lowering a shaped mold.