JPH0148083B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a compact and opposed type press with high width reduction efficiency, in which the mass of the part driven by an eccentric shaft is reduced.

[Prior art]

FIG. 1 shows an outline of a conventional opposed type press, in which eccentric shafts b, b' are drivably supported by frames a, a' divided into left and right, and the eccentric shafts b,
Connecting rods c, c' facing in the line direction are pivotally connected to b', and the connecting rods c, c'
The lower ends of yokes d and d', which can be rotated left and right around axes e and e', are pivotally attached to the tip of c', and the upper ends of yokes d and d' can be slid left and right. The molds f and f′ to be obtained are connected, and the hydraulic cylinders g,
By operating g' to change the positions of axes e and e', the distance between the dies f and f' can be adjusted in accordance with the width of the rolled material h.

When reducing the width of the rolled material h, the drive devices i and i' are driven to rotate the eccentric shafts b and b' via the pinions j and j' and the gears k and k', and the connecting rods c and
By opposingly moving c' to the left and right, the yokes d and d' are simultaneously moved inward and outward in the width direction of the rolled material h, thereby reducing the width of the rolled material h. In addition, l,
l' is a bevel gear, and m is a connecting shaft.

However, in such a conventional opposed type press, the dies f, f', yokes d, d', and connecting rods c, c' have sufficient strength in order to apply a considerable width reduction force to the rolled material h. Therefore, these become large-sized, and a very large driving force for the eccentric shafts b and b' is required to drive them.

Therefore, the conventional opposed type press has high equipment costs and high running costs.

[Purpose of the invention]

An object of the present invention is to provide an opposed press that is small in size, has low equipment cost, and has high width reduction efficiency.

[Structure of the invention]

In the present invention, a slide guide is fitted movably in the width direction of the rolled material to the side of the rolled material passing line in a fixed frame through which the rolled material can pass, and the slide guide is disposed near the rolled material passing line opposite to the rolled material passing line. A position adjustment mechanism having a screw shaft engaged with an end portion is provided on the opposite side of the fixed frame toward the rolled material passing line, and is fitted to the end portion of the slide guide closer to the rolled material passing line so as to be movable in the width direction of the rolled material. A slider equipped with a mold is provided, a slide block is fitted into a cavity formed in the slider so as to be movable in a direction intersecting the moving direction of the slider, and an eccentric shaft pivotally supported on the slide guide is attached to the slide block. By rotatably fitting the eccentric parts, the driving part during width reduction can be made smaller and the width reduction efficiency can be improved.

〔Example〕

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

FIG. 2 and FIG. 3 are one embodiment of the present invention,
Worm wheels 3 are provided at both side ends of the rolling material 1 passing line of the fixed frame 2 through which the rolled material 1 can pass.
are thrust-supported and arranged vertically, and one end of each worm wheel 3 is connected to a piston head 4.
The piston heads 4 are screwed together so that they face each other, and the screw shafts 5 are locked by a locking member (not shown) so that they do not rotate together with the worm 6 and are movable in the axial direction, and are rolled. A position adjustment device that can move forward and backward in the width direction of the material 1 is formed.

A box-shaped slide guide 8 having a cylinder 7 at one end and capable of sliding in the width direction of the rolled material 1 within the fixed frame 2 is attached to the piston head 4 of each screw shaft 5 of the position adjusting device. The respective cylinders 7 and the respective piston heads 4 are fitted together, respectively.
Oil is sealed in the cylinder chamber 9 formed by the above, and a slide 10 is housed on the side opposite to the cylinder 7 of each slide guide 8 so as to be able to slide in the width direction of the rolled material 1, and the rolling of each slide 10 is performed. A mold 11 is provided on each end face facing the material 1.

Each slider 10 has a quadrangular columnar cavity 1 inside.
2, and a slide block 14 in which holes 13 are bored in each cavity 12 in the running direction of the rolled material 1,
They are housed so that they can slide vertically relative to the rolled material 1, and an eccentric shaft 15 is passed through the hole 13 of each slide block 14, and a bearing 1 is attached to both sides of each eccentric shaft 15.
6, each eccentric shaft 15 is rotatably fixed to a slide guide 8, and one end of each eccentric shaft 15 is connected to a drive device via a universal joint 17.

The universal joint 17 is similar to the one used to transmit rotational force from the drive device to the vertical rolls in a vertical rolling mill. The ring is connected to the output shaft of the drive device, and the gear coupling ring at the other end is connected to the eccentric shaft 15, which is the input shaft on the high-load driven side.

In the figure, 18 is an eccentric shaft 1 provided on the fixed frame 2.
5 indicates a clearance for movement, 19 indicates a seal.

In the above, since the maximum width reduction amount by one press operation is determined by the stroke of the slider 10, the eccentricity of the eccentric shaft 15 is set to a predetermined value.

Next, the operation of the present invention will be explained.

First, when determining the position of the slide guide 8 according to the width and reduction amount of the rolled material 1 to be width-reduced,
The eccentric shaft 15 was rotated, the center O' of the eccentric shaft 15 was positioned on the side opposite to the rolling material 1 from the rotation center O of the eccentric shaft 15, the slider 10 was positioned at the back of the slide guide 8, and the mold 11 was drawn in. Leave it as the state. In this state, when the worm 6 is rotated in the direction of moving the screw shaft 5 toward the rolled material 1, the worm wheel 3
rotates, and the screw shaft 5 screwed into the female threaded portion at the center of rotation of the worm wheel 3 moves in the width direction of the rolled material 1.

Therefore, since the slide guides 8 are attached to the piston head 4 of the screw shaft 5 via the cylinder 7 section, each of the slide guides 8 moves within the fixed frame 2 in the direction of the rolled material 1, and the mold 11 The tip approaches the rolled material 1. Each slide guide 8
The stop position is such that the tip of the mold 11 is aligned with the eccentric shaft 1.
5, the rolled material 1 is placed at a position where it can be rolled down to a desired width when it protrudes the most.

Next, when the eccentric shaft 15 is rotated by the drive device via the universal joint 17, the eccentric shaft 1
5 is rotated in close contact within the hole 13 of the slide block 14, and the center O' of the eccentric shaft 15 is aligned with the eccentric shaft 1.
5 rotates around the rotation center O, the slide block 14 also moves around the rotation center O.

The slide block 14 is housed in the cavity 12 of the slider 10 so as to be able to slide in the direction perpendicular to the rolled material 1, and the eccentric shaft 15 is supported by the slide guide 8 by a bearing 16. When the center O' of the rotating eccentric shaft 15 is on the cylinder 7 side of the rotation center O, the slider 10 slides to be drawn into the slide guide 8. When the center O' moves above the rotation center O,
The slide block 14 slides upward within the cavity 12 and causes the slider 10 to protrude in the direction of the rolled material 1. When the center O' moves to the side of the rolling material 1 of the center of rotation O, the slide block 14 slides downward within the cavity 12 and causes the slider 10 to further protrude in the direction of the rolling material 1. Mold 11
The width of the rolled material 1 is reduced by this. When the center O' is located on the straight line connecting the rotation center O and the rolled material 1, the slider 10 and the mold 11 are in the most protruded state. Further, when the center O' reaches below the rotation center O, the slide block 14 slides downward within the cavity 12 and draws the slider 10 into the slide guide 8, and the center O' becomes the rotation center O and the screw shaft. Slider 10 when located between the center of 5
is located deep inside the slide guide 8, and 1
The stroke action ends.

Furthermore, the rolled material 1 is sent out a certain distance and the width reduction is performed again.

In the above, the reaction force when rolling down the width of the rolled material 1 with the die 11 is as follows: slider 10 → slide block 14 → eccentric shaft 15 → bearing 16 → slide guide 8
→Cylinder chamber 9→Piston head 4→Screw shaft 5→
It is transmitted in this order from the worm wheel 3 to the fixed frame 2, and is finally supported by the fixed frame 2. Furthermore, if an excessive load occurs during the width reduction of the rolled material 1, the oil in the cylinder chamber 9 is drained to prevent overload, which is safe.

FIGS. 4 and 5 show other embodiments of the present invention, in which a pit man 20 is pivotally mounted with a pin 21 in a cavity 12' of a slider 10', and the pit man 20 is pivoted in a cavity 12' of a slider 10'. An eccentric shaft 15 similar to that of the previous embodiment is passed through a hole 13' drilled in the running direction of the rolled material 1 on the other end side. In FIGS. 4 and 5, the same reference numerals as in FIGS. 3 and 4 indicate the same parts.

In the case of this embodiment as well, the pit man 20 is tilted upward due to a change in the relative position of the center O' of the eccentric shaft 15 with respect to the rotation center O, and the slider 10' and the mold 11
is moved left and right, and the rolled material can be rolled down in width.

It should be noted that the opposed press of the present invention is not limited to the above-described embodiments, and may have springs instead of sealing oil in the cylinder chamber.
Of course, various changes can be made without departing from the gist of the invention.

〔Effect of the invention〕

As described above, according to the opposed press of the present invention, a slider having a mold at the tip is housed in a slide guide arranged in a fixed frame so that its position can be adjusted so that it can be protruded and retracted by an eccentric shaft. Therefore, the part that moves when rolling down the width is the mold,
Only a slider and a slide block are required, which makes the press smaller and has less mass than a conventional opposed-type press, so the equipment can be made more compact, and the width reduction efficiency is increased because the driving part for width reduction is smaller. The driving force of the eccentric shaft can also be reduced, and equipment costs and running costs can be reduced, and various other excellent effects can be achieved.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a conventional opposed type press, FIG. 2 is an explanatory diagram of an embodiment of the opposed type press of the present invention, FIG. A partial explanatory view of another embodiment of the invention, FIG. 5 is a view taken in the - direction arrow of FIG. 4. 1 is a rolled material, 2 is a fixed frame, 3 is a worm wheel, 5 is a screw shaft, 6 is a worm, 8 is a slide guide, 10, 10' is a slider, 11 is a mold, 12 is a hollow part, 14 is a slide block ,1
5 indicates an eccentric shaft, and 20 indicates a pitman.

Claims (1)

[Claims] 1 A slide guide is fitted movably in the width direction of the rolled material on the side of the rolled material passing line in a fixed frame that allows the rolled material to pass, and the end of the slide guide opposite to the rolled material passing line and A position adjustment mechanism having an engaged screw shaft is provided near the rolling material passing line of the fixed frame opposite to the rolling material passing line, and a mold is fitted to the end of the slide guide near the rolling material passing line so as to be movable in the width direction of the rolling material. A slider is provided, a slide block is fitted into a cavity formed in the slider so as to be movable in a direction intersecting the moving direction of the slider, and an eccentric portion of an eccentric shaft pivotally supported on the slide guide is fitted into the slide block. A facing type press characterized by being rotatably fitted.