JPH0150484B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a compact opposed press with high width reduction efficiency.

[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, i are driven, and the eccentric shafts b,
By rotating b' and moving the connecting rods c and c' oppositely to the left and right, the yoke d,
d' is simultaneously moved inward and outward in the width direction of the rolled material h,
The width of the rolled material h is being reduced. Note that l and l' are bevel gears, and m is a connecting rod.

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 type press that is small in size, has low equipment costs, and has a high width reduction ratio.

[Structure of the Invention] The present invention provides an outer slider equipped with a mold at a tip end closer to the rolled material passing line in the width direction of the rolled material, on the side of the rolled material passing line in a fixed frame through which the rolled material can pass. an inner slider is slidably fitted to the outer slider in the width direction of the rolled material, and a screw is inserted between the end of the inner slider closer to the rolled material passage line and the inside of the outer slider. A position adjustment device having a shaft is provided, a drive device for the position adjustment device is mounted on the outer slider, a slide block is fitted into the cavity of the inner slider so as to be movable in a direction intersecting the moving direction of the slider, and The eccentric part of the eccentric shaft pivotally supported by the fixed frame is rotatably fitted into the slide block, and the outer slider and the fixed frame are connected via a balance cylinder extending in the width direction of the rolled material, thereby reducing the width reduction. This is a counter-type press that has a smaller driving part and improved width reduction efficiency.

〔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,
Sliders 3 are disposed at both end portions of the fixed frame 2 through which the rolled material 1 passes, on both sides of the rolled material 1 passing line, so as to be able to slide oppositely in the width direction of the rolled material 1.

Each of the sliders 3 includes an outer slider 7 having hollow sections 5 and 6 internally partitioned into two chambers by a partition 4, and an outer slider 7 that is slidable in the width direction of the rolled material 1 in the hollow section 5 of the outer slider 7. Stored inner slider 8
A mold 9 is provided on the end face of each outer slider 7 facing the rolled material 1.

A cylinder 10 is provided on the end surface of each inner slider 8 on the mold 9 side so as to penetrate through the partition 4 and protrude into the cavity 6, and each cylinder 10 is provided with a threaded shaft 12 having one end shaped like a piston head 11. The piston heads 11 are fitted together, oil is sealed in the cylinder chamber 13 formed by the cylinders 10 and the piston heads 11, and the internal threads 14 and external teeth 15 are fitted to each screw shaft 12. The screw shaft 12 is locked by a key (not shown) so that it does not rotate together with the wheel 16 and is movable in the axial direction, and the opposite piston of the wheel 16 The side surface facing the head 11 is rotatably supported by a boss-shaped seat 17 provided in the cavity of each outer slider 7 to form a position adjustment mechanism. Furthermore, a pinion 19 fixed in each cavity 6 by a pin 18 is engaged with the external teeth 15 of each wheel 16 so as to be movable relative to each other in the axial direction of each screw shaft 12, and the outer side of each outer slider 7 is Each pinion 1 is
9 and each wheel 16 are rotatable.

A slide block 24 in which a rectangular prism-shaped cavity 22 is provided inside each inner slider 8, and a hole 23 is bored in each cavity 22 in the running direction of the rolled material 1.
are housed so as to be able to slide vertically with respect to the rolled material 1, and the holes 23 of each slide block 24 are
The eccentric shafts 25 pass through the eccentric shafts 25 , both sides of each eccentric shaft 25 are rotatably fixed to the fixed frame 2 by bearings 26 , and one end of each eccentric shaft 25 is connected to a drive device through a universal joint 27 . It has been done.

The universal joint 27 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 25, which is the input shaft on the high-load driven side.

Furthermore, a pedestal 28 provided on the fixed frame 2
Balance cylinders 30, 30 for applying a reaction force in the direction of the counter-rolled material 1 are disposed on the flange portion 29 of each outer slider 7 located outside the fixed frame 2, respectively.

In the above, since the maximum width reduction amount by one press operation is determined by the stroke of the slider 3, the eccentricity of the eccentric shaft 25 is set to a predetermined value.

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

First, the position of the slider 3 is determined according to the width of the rolled material 1 to be width-reduced and the amount of reduction. in this case,
The eccentric shaft 25 is rotated, the center O' of the eccentric shaft 25 is positioned on the side opposite to the rolling material 1 from the rotation center O of the eccentric shaft 25, the slider 3 is positioned on both ends of the fixed frame 2, and the mold 9 is installed. Leave it in the pulled back position. In this state, when the motor 20 for driving the position adjustment mechanism is rotated so as to move the slider 3 in one direction of the rolled material, the wheels 16 rotate, and the screw shafts screwed into the female threads 14 of each wheel 16 rotate. 12 while rotating in the direction of the rolled material 1, each seat 17 is pushed in the direction of the rolled material 1 by each wheel 16, and each outer slider 7 and mold 9 move together in the direction of the rolled material 1. be done. At this time, since each eccentric shaft 25 is rotatably fixed to the fixed frame 2 by a bearing 26, each slide block 24, each inner slider 8, and the cylinder 1 of each inner slider 8
0 does not move, each outer slider 7 slides along the pedestal 28, the fixed frame 2, each inner slider 8 and each cylinder 10, and each wheel 16 and each pinion 19 The meshing portion also slides and moves in the direction of the rolled material 1, and the tip of the mold 9 approaches the rolled material 1. Further, the piston rod 31 of each balance cylinder 30, 30 is retracted as each outer slider 7 moves. The stopping position of each of the outer sliders 7 is such that the rolled material 1 can be rolled down to a desired width when the tip of the mold 9 protrudes the most due to the rotation of the eccentric shaft 25.

Next, when the eccentric shaft 25 is rotated by the drive device via the universal joint 27, the eccentric shaft 2
5 is rotated in close contact within the hole 23 of the slide block 24, and the center O' of the eccentric shaft 25 is aligned with the eccentric shaft 25.
5 rotates around the rotation center O, the slide block 24 also moves around the rotation center O.

The slide block 24 is housed in the cavity 22 of the inner slider 8 so as to be able to slide vertically with respect to the rolled material 1, and the eccentric shaft 25 is supported by the fixed frame 2 by a bearing 26. Therefore, when the center O' of the rotating eccentric shaft 25 is on the side opposite to the cylinder 10 from the rotation center O, each inner slider 8, each threaded shaft 12, and each wheel 16 slide in the direction opposite to the rolled material 1, and each wheel Each outer slider 7 from which the pushing force in one direction of the rolled material by 16 has been released.
is moved in the direction opposite to the rolling material by each balance cylinder 30, 30. Therefore, each boss portion 17 and each wheel 16 are always in contact with each other.

When the center O' moves above the rotation center O,
The slide block 24 causes the inner slider 8 to protrude in the direction of the rolled material 1 while sliding upward within the hollow portion 22, and each outer slider 7 is moved through each boss portion 17 by each wheel 16 screwed onto each screw shaft 12. slide the rolled material in one direction. The center O' is the rotation center O
When it moves to the rolled material 1 side, the slide block 2
4 makes the inner slider 8 and the outer slider 7 further protrude in the direction of the rolled material 1 while sliding downward within the cavity 22, and the cylinder 1 is rolled down in width by the die 9 provided on the outer slider 7. When the center O' is located on the straight line connecting the rotation center O and the rolled material 1, the slider 3 and the mold 9 are in the most protruded state.

Furthermore, when the center O' reaches below the rotation center O, the slide block 24 slides downward within the cavity 22, and the inner slider 8 is slid within the cavity 5 of the outer slider 7 in the direction of the counter-rolled material 1. make it move. At this time, since each wheel 16 screwed onto each screw shaft 12 also moves in the direction opposite to the rolled material, each outer slider 7
The force acting on the rolled material in one direction is released and each wheel 1
6 and each seat 17 try to separate from each other, but since each outer slider 7 is constantly receiving force in the direction of the anti-rolled material 1 by each balance cylinder 30, 30 at the flange portion 29, each wheel 16 tends to separate from the anti-rolled material. 1
Each outer slider 7 and mold 9 are separated from the rolled material 1 by the amount of movement in the direction. Center O′ is rotation center O
When the slider 3 is positioned on the side opposite to the rolled material 1, the slider 3 is positioned at both ends of the fixed frame 2, and one stroke of operation is completed.

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 9 is as follows: outer slider 7 → wheel 16 → screw shaft 12 → piston head 11 → cylinder chamber 13
It is transmitted in this order: → inner slider 8 → slide block 24 → eccentric shaft 25 → bearing 26 → fixed frame 2, and is finally supported by fixed frame 2.
Furthermore, if an excessive load occurs during the width reduction of the rolled material 1, the oil in the cylinder chamber 13 is drained to prevent overload, which is safe.

In addition, when increasing the interval between each slider 3, if each wheel 16 is rotated and each wheel 16 is moved in the direction opposite to the rolling material 1 along the screw shaft 12,
Each balance cylinder 30, 30 moves each outer slider 7 in the direction opposite to the rolled material 1, and the distance between each mold 9 increases, so that each wheel 16 rotates at a predetermined position according to the width of the rolled material 1. to stop.

It should be noted that the opposed press of the present invention is not limited to the above-described embodiments, and that the slider may be provided not only on both sides of the rolled material but only on one side, and that instead of sealing oil in the cylinder chamber. Of course, various changes can be made without departing from the gist of the present invention, such as the possibility of housing a spring.

〔Effect of the invention〕

As described above, according to the opposed type press of the present invention, the slider with the mold at the tip is disposed within the fixed frame so that the position can be adjusted, and the eccentric shaft allows the slider to be protruded and retracted. The only parts that move during rolling down are the die, slider, and slide block, which are smaller and have less mass than conventional opposed-type presses, making the equipment more compact. Since the width reduction efficiency is reduced, the driving force of the eccentric shaft can be reduced, and equipment costs and running costs can be reduced, and various other excellent effects are exhibited.

[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, and FIG. 3 is a view taken in the - direction arrow of FIG. 1 is a rolled material, 2 is a fixed frame, 7 is an outer slider, 8 is an inner slider, 9 is a mold, 12 is a screw shaft, 16 is a wheel, 22 is a hollow part, 24 is a slide block, 25 is an eccentric shaft, 30 indicates a balance cylinder.

Claims (1)

[Claims] 1. An outer slider equipped with a mold at the tip end closer to the rolled material passing line is fitted to the side of the rolled material passing line in a fixed frame that allows the rolled material to pass, so as to be slidable in the width direction of the rolled material. , an inner slider is slidably fitted to the outer slider in the width direction of the rolled material,
A position adjusting device having a screw shaft is provided between the end of the inner slider closer to the rolled material passage line and the inside of the outer slider, a drive device for the position adjusting device is attached to the outer slider, and A slide block is fitted in the slide block so as to be movable in a direction intersecting the moving direction of the slider, an eccentric portion of an eccentric shaft pivotally supported on the fixed frame is fitted in the slide block so as to be rotatable, and the outer slider and the fixed frame are fitted together. An opposed type press characterized in that the two are connected via a balance cylinder extending in the width direction of the rolled material.