JPH0248083Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention relates to a work roll release device in a leveler feeder used to clamp and release work rolls installed above and below in a short time to correct bends in coil material. It is.

``Prior Art'' Conventionally, the work roll of a leveler feeder that supplies coil material to a press must be clamped and released each time the coil material is fed during press operation. The lower work rolls are arranged on the same level at regular intervals and rotatable on the machine body, and the upper work rolls are mounted on a bearing holder installed on the machine body so that they can be raised and lowered, facing the center of the interval between the lower work rolls and rotated so that their vertical position can be adjusted. After adjusting the gap with the lower work roll, the bearing holder was raised and lowered by a cylinder installed at the top of the machine, clamping and releasing the coil material, and driving the lower work roll by connecting it with a gear.

``Problem that the invention aims to solve'' In the above-mentioned conventional equipment, in order to correct the bending of the board, the upper work roll on the entrance side reduces the gap between it and the lower work roll, and the upper work roll on the exit side narrows the gap between the lower work roll and the lower work roll. The gap between the upper work roll and the lower work roll needs to be increased, and the gap between the upper work roll and the lower work roll is adjusted for each upper work roll, so the bearing holder is adjusted to match the large stroke of the upper work roll on the entrance side. It is necessary to move up and down using a cylinder, which requires a cylinder with a large stroke. Since the gap must be adjusted even when the thickness of the coil material to be handled changes, the adjustment work is troublesome, and there are also disadvantages in that a large cylinder is required. The purpose of the present invention is to eliminate these drawbacks and provide a work roll release device for a leveler feeder in which the gap between the upper work roll and the lower work roll can be easily adjusted and the strokes of the cylinders for clamping and releasing can be shortened. .

"Means and effects for solving the problem" The structure of the present invention is that lower work rolls are rotatably provided at the same level on the body of the leveler feeder at regular intervals, and the upper work rolls are placed opposite to the center of the interval between the lower work rolls. The rolls are arranged on the same level and rotatably mounted on a bearing holder, and the exit side of the bearing holder in the feeding direction of the coil material is swingably mounted on a fulcrum shaft whose vertical position can be adjusted. The height of the shaft is adjusted to create the required gap between the upper and lower work rolls on the exit side, and the inlet end of the bearing holder is pushed down by the clamp cylinder and pulled up by the release spring, so that when the coil material is clamped, the upper and lower work rolls on the inlet side A stopper whose vertical position can be adjusted is provided to create the required narrow gap between the work rolls, and a mounting base equipped with a clamp cylinder and release spring is supported on a fulcrum shaft on the outlet side, and connected to the stopper on the inlet side. The height of the mounting base can also be adjusted according to the adjustment of the work roll gap. Therefore, it is easy to adjust the gap between the upper and lower work rolls, and since the position of the mounting base changes with the adjustment, the stroke of the clamp cylinder hardly changes.

Embodiment FIGS. 1 and 2 show the structure of a work roll release device of the present invention. The body 1 of the leveler feeder is rotatably provided with four lower work rolls 2 at equal intervals on the same level and one pinch roll 3 on the inlet side thereof, and an opposing pinch roll 3 is provided above the center of the interval between the lower work rolls 2. Two upper work rolls 4 are rotatably provided in bearing holders 5, 5 that support both sides of these rolls. The bearing holders 5, 5 have end portions on the exit side in the feeding direction of the coil material shown by arrow A supported swingably on fulcrum shafts 6, 6 whose vertical positions are adjustable. bearing holder 5,
The inlet side of the cylinder 5 is connected by a rod 7 shown in FIG. 2, and both ends of the rod 7 are connected to the piston rods of the clamp cylinders 8, 8 so as to be pushed down.

The body 1 is provided with stoppers 9, 9 which are vertically adjustable and face the lower surfaces of the inlet side ends of the bearing holders 5, 5. By adjusting the height of the fulcrum shaft 6 according to the thickness of the coil material, the required gap is created between the upper and lower work rolls 2 and 4 on the exit side, and by adjusting the height of the stoppers 9 and 9, the upper and lower work rolls on the inlet side are adjusted. If the gap between the upper and lower work rolls 2 and 4 is adjusted to a required narrow gap, the gap between the upper and lower work rolls 2 and 4 will gradually become wider from the inlet side to the outlet side, which is reasonable and easy to adjust. The lower work roll 2 and the pinch roll 3 are connected by a gear (not shown) and fed and rotated by a drive motor.

The clamp cylinders 8, 8 are provided on the upper surface of the mounting base 10. The mounting base 10 has both ends on the outlet side connected to the fulcrum shafts 6, 6, and both ends on the inlet side are connected to stoppers 9, 9 by length-adjustable threaded rods 11, 11.
It is connected with. Therefore, the height of the mounting base 10 is automatically adjusted according to the height adjustment of the fulcrum shafts 6, 6 and the stoppers 9, 9, and therefore the strokes of the clamp cylinders 8, 8 do not change much.
The stroke length can be set to the minimum required length, and the size can be reduced.

The lower end of a hanging bolt 12 is connected to the center part of the rod 7 that connects the bearing holders 5, 5, and the upper end extends upward through the mounting base 10.
A release spring 14 is provided between the washer 13 at the upper end and the mounting base 10, and the clamp cylinder 8,
When the downward force of 8 is removed, the upper work roll 4 is released.

Above the pinch roll 3, there is an upper pinch roll 15 opposite to the pinch roll 3, and its shafts at both ends are connected to levers 16,
It is supported and provided in the center of 16. Lever 1
The inlet side ends of 6 and 16 are attached to support shafts 1 provided on brackets 17 and 17 protruding from the lower surface of the mounting base 10.
8, and the outlet side end is connected to a piston rod of a pinch roll cylinder 19 provided on the upper surface of the mounting base 10, and the coil material is clamped and released as necessary by raising and lowering the piston rod.
A guide roll 20 is provided between the levers 16, 16 of the support shaft 18.

The vertical shafts 21, 21 provided with the fulcrum shaft 6 and the stoppers 9, 9 are provided on the fuselage 1 so as to be able to rise and fall freely, and the adjustment screws 21A, 9A at the lower end of each have a shaft that restrains the movement in the vertical direction and is rotatable. The gears 22, 23 are screwed together, and the worms 24, 24, 25, 25 that mesh with the gears 22, 22 and 23, 23 are connected by tuning shafts 26 and 27, and the height is adjusted by turning the tuning shafts 26, 27 with a tool etc. Make adjustments.

``Effects of the invention'' As is clear from the above explanation, according to the invention, the gap between the upper and lower work rolls can be adjusted reasonably easily, and the stroke length of the clamp cylinder can be minimized to reduce the size of the cylinder. It has great practical effects and advantages, such as easy operation and improved work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a front view of the main part of the leveler feeder according to the embodiment, and FIG. 2 is a side view on the inlet side showing the main part of the - cross section in FIG. 1. 1 is the machine body, 2 is the lower work roll, 3 is the pinch roll, 4 is the upper work roll, 5 is the bearing holder, 6 is the fulcrum shaft, 7 is the rod, 8 is the clamp cylinder, 9 is the stopper, 9A is the adjustment screw, 10 is the mounting base, 11 is the threaded rod, 12 is the hanging bolt, 13
is the washer, 14 is the release spring, 15 is the upper pinch roll, 16 is the lever, 17 is the bracket, 1
8 is a spindle, 19 is a cylinder for pinch rolls, 20
is a guide roll, 21 is a vertical shaft, 21A is an adjustment screw, 22 is a gear, 23 is a gear, 24 is a worm,
25 is a worm, 26 is a tuning axis, 27 is a tuning axis,
It is.

Claims (1)

[Claim for Utility Model Registration] In a work roll release device in a leveler feeder that supplies coil material to a press, a plurality of lower work rolls are rotatably provided on the machine body at equal intervals from the coil material inlet side to the outlet side. 2
A plurality of upper work rolls 4 facing each other from above are rotatably supported at the center of each interval between the lower work rolls 2, and the exit side thereof is rotatably supported by a fulcrum shaft 6 provided on the machine body whose vertical position is adjustable. a bearing holder 5, and a stopper 9, which is provided on the machine body facing the lower surface of the inlet side of the bearing holder 5 and whose vertical position is adjustable.
The inlet end thereof is connected to the stopper 9, and the outlet end thereof is connected to the fulcrum shaft 6, and is provided above the bearing holder 5, and the position can be adjusted by adjusting the vertical position of the stopper 9 and the fulcrum shaft 6. A mounting base 10 to be adjusted, and an upper work roll 4 fixed to the mounting base 10.
A clamp cylinder 8 having a minimum constant stroke length necessary for the release of the bearing holder 5 and driving the inlet side end of the bearing holder 5 in a downward direction; A spring 14 is provided and biases the inlet side of the bearing holder 5 in a direction to pull it up.
A work roll release device for a leveler feeder, comprising: