JPH0739449Y2 - Automatic roll attaching / detaching device for roll changing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an automatic roll attaching / detaching device in a roll changing device installed to replace a roll incorporated in, for example, a shaped steel roll straightening machine. is there.

[Problems to be solved by the prior art and this device]

A roll type straightening device for H-shaped steel, angle steel, etc. employs a sleeve-type roll in which a roll is incorporated into a sleeve. With the roll changing device, prepare a set of rolls by incorporating rolls into the sleeve in advance, remove the set of rolls from the straightening machine, and then assemble the set of prepared rolls on the spindle. ing.

The roll changing device that changes the rolls in advance consists of a mandrel that incorporates rolls and the like and a rotating mechanism for this mandrel.A crane is used up to the mandrel, and the mandrel is equipped with a set of rolls and is pulled out manually. ing. The set of rolls is finally pulled out from the mandrel while being fixed by the tightening nut.

Since such a roll changing device almost depends on human power, it is desired to automatically attach and detach the set of rolls to and from the mandrel in terms of labor saving.

However, when such automatic attachment / detachment is performed, there are the following problems.

(I) Shaped steel rolls have various shapes, and it is difficult to apply force to the rolls for nipping.

(Ii) Even if force is applied to the roll, the mandrel may be damaged.

In addition, in Japanese Utility Model Publication No. 55-33687, a device for automatically attaching and detaching a roll to and from a sleeve is proposed. This is a base that supports the sleeve vertically and turns it from vertical to horizontal.
It is composed of a suspension mechanism that has openable and closable engagement claws that can be engaged with the inner circumference of a roll and the like, and a fitting and insertion mechanism that can move up and down when receiving a roll and the like. There is a problem of this.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to perform the work in a short time with a relatively simple structure, and to clamp the roll regardless of the roll shape and without twisting the mandrel. An object of the present invention is to provide an automatic roll attaching / detaching device capable of automatically attaching / detaching a roll.

[Means for Solving the Problems]

As shown in FIGS. 1 and 2, an automatic roll attaching / detaching device according to the present invention is a device for automatically attaching / detaching a roll R from a mandrel m of a roll changing device installed to replace a roll. , A pair of open / close arms 1 having a grip claw 2 at the tip and capable of holding the roll R from both sides by the actuator 3 in the radial direction of the roll R, and the open / close arm 1 on the side of the mandrel m. In, the slide mechanism 4 is configured to move in the axial direction of the mandrel m.

The actuator 3 may be a linear drive mechanism such as a motor cylinder, a fluid pressure cylinder, and a screw / nut type. The slide mechanism 4 may be composed of a guide rail and a linear drive mechanism such as a screw / nut system.
Further, it is preferable that the abutting surface 2A of the grip claw 2 is curved in conformity with the roll peripheral surface so that line contact can always be made even if the roll peripheral surface changes variously (see FIG. 4).

[Action]

When the roll R is assembled, the roll R is arranged in front of the mandrel m, and the pair of open / close arms 1 opened to a predetermined position are closed by the actuator 3 until the grip claws 2 come into contact with the peripheral surface of the roll R.

From this state, the pair of open / close arms 1 is moved by the slide mechanism 4.
Is moved in the axial direction of the mandrel m, the roll R is incorporated in the mandrel m.

The roll R is extracted similarly.

〔Example〕

As shown in FIGS. 2 and 3, the roll changing device is composed of a mandrel m and a motor M for rotating the mandrel, and a sleeve Sl is attached to the mandrel m via a key K for H-section steel. If there is a straightening roll R and a spacer Sp in the sleeve Sl, attach the tightening nut N, then rotate the mandrel m with the nut N fixed and tighten the nut N, and then install such a set of rolls on the mandrel. Remove from m to prepare for roll replacement.

The automatic roll attaching / detaching device of the present invention having a pair of opening / closing arms 1 and a slide mechanism 4 is installed on the side of the mandrel m of the roll changing device.

As shown in FIG. 1, the opening / closing arm 1 is a substantially L-shaped member having a grip claw 2 at its tip, the base portion 1A is slidably supported in the guide member 5, and the grip claw 2 with respect to the roll R. It is possible to move back and forth. Further, the guide member 5 is tilted and fixed to a guide rail described later in order to reduce the occupied space, and the center line 1 of the grip claw 2 passes through the center O of the mandrel m.

The actuator that moves the open / close arm 1 back and forth is the motor 3A.
Is the motor cylinder 3 that converts the rotation of the piston into linear movement of the piston of the cylinder 3B, and the tip of the piston shaft 3C is the arm base 1A.
The cylinder 3B is attached to the guide member 5 via the support bracket 6 by pin-attaching to the base end side thereof, and the base portion 1A slides in the guide member 5 by expanding and contracting the piston shaft. Further, as shown in FIG. 2, the pair of opening / closing arms 1 are arranged such that the bases 1A thereof are displaced in the guide member 5 in the axial direction of the mandrel so that the pair of gripping claws 2 are aligned on the same line. Has been done.

The slide mechanism 4 includes a guide rail 7, a screw shaft 8,
It comprises a nut member 9 and a sliding motor 10. The guide rails 7 are rectangular members that are parallel to the central axis of the mandrel m, and a total of four guide rails 7 are arranged on both sides of the guide member 5.
A guide shoe 11 that engages with the guide member 5 is provided to position the guide member 5 and slidably support it in the axial direction of the mandrel.

The screw shaft 8 is provided in parallel with the guide rail 7,
A nut member 9 screwed onto the screw shaft 8 is attached to the guide member 5, and the screw shaft 8 is attached to the sliding motor 10.
The guide member 5 slides by being rotated by.

The straightening roll R is for a sheet pile / invert (unequal angle angle steel), and the stroke of the slide mechanism 4 is designed so that the roll R incorporated in the mandrel m can be separated from the mandrel m.

In the above description, the straightening roll of shaped steel has been described, but it goes without saying that the present invention can be applied to the attachment and detachment of other sleeve type rolls.

[Effect of device]

As described above, since the roll attaching / detaching device according to the present invention is composed of the pair of opening / closing arms and the slide mechanism, the roll can be clamped regardless of the roll shape, and the roll can be automatically attached / detached without twisting the mandrel. Also,
The structure can be relatively simple, and the attachment / detachment work can be performed in a short time.

[Brief description of drawings]

1 and 2 are a front view and a side view showing an automatic roll attaching / detaching device according to the present invention, FIG. 3 is a sectional view showing a roll reassembling device, and FIG. 4 is a perspective view showing a holding claw. . 1 ... Opening / closing arm, 2 ... Gripping claw, 3 ... Actuator, 4 ... Slide mechanism, 5 ... Guide member, 6 ... Support bracket, 7 ... Guide rail, 8 ... Screw shaft, 9 ... Nut member, 10 ... Sliding motor, 11 ...
… Guidance shoe.

Claims (1)

[Scope of utility model registration request] 1. A device for automatically attaching and detaching a roll to and from a mandrel of a roll changing device installed to replace a roll, which has a gripping claw at its tip and can be moved forward and backward in the radial direction of the roll by an actuator. A roll automatic attaching / detaching device of a roll changing device, comprising a pair of opening / closing arms capable of holding a roll from both sides and a slide mechanism for moving the opening / closing arms in the axial direction of the mandrel on the side of the mandrel. .