JPS59225820A - Bending roller - Google Patents

Abstract

PURPOSE:To guarantee a work against the processing accuracy in its out of roundness and to make the loads burdened on respective rolls uniform by attaching backup rolls to an intermediate sliding bed mounted on the intermediate part of a bed and displacing bottom rolls freely, in constructing a titled roller. CONSTITUTION:In a bending roller consisting of a top roll 15 and plural movable bottom rolls 21, the end part of a steel sheet 30 to be worked is inserted between the top roll 15 and the bottom rolls 21 to bend the end part of sheet 30 by moving a bearing bed 22 with the aid of a driving device 25. The other end part of sheet 30 is also bent by the same operations. The bearing bed 22 is returned to the central part, and the top roll 15 is lowered by actuating a hydraulic cylinder to bend the sheet by turning the top roll 15 and the bottom rolls 21. The bottom rolls 21 are supported by plural freely turnable backup rolls 29 and are displaced together with a bed 1. Accordingly, the loads burdened on respective roll bearings are made uniform, and the moving mechanism, etc. are simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bending roll machine comprising one top roll and a plurality of movable bottom rolls.

In a conventional bending roll machine that can move the bottom roll, the bottom roll has a light groove for transferring the back-up roll part, Bo 1.120/L/4
i+b Either provide a moving device not only for the cradle but also for the backup roll part, or connect and integrate both bottom roll bearing pedestals and the backup roll part to move the backup roll from KmJJj of the bottom roll bearing pedestal. It has a structure that allows

In a bending roll machine with such a structure, the bank up roll section bears a fairly large load of the horizontal load applied to the bottom roll during end bending, so it is necessary to strengthen the moving mechanism and pack. As Amprol and its spray stands become larger, it is inevitable that the complexity of the means of transportation itself and its restrictions will increase. In general, the load applied to the bottom roll is determined by the I rigidity of the bottom roll and bed, the distance between the supporting points, the dimensional ratio of the load distributed in the longitudinal direction of the roll, and the support conditions of each bearing part. The load proportion supported by the section is necessarily determined.

This invention +11: In order to make maximum use of the rigidity of the main body bottom roll and the bed, the bottom roll and bed can be freely displaced in the vertical load component via the backup roll, and in the horizontal load component, 1. A structure in which the bearings that support all the bank up rolls are used as an integral structure to support them while freely moving on the bed. This is a bending roll machine that allows the pair of bottom rolls to move freely in the same direction, while ensuring perfect circular processing accuracy.
The purpose is to eliminate the unbalance of the load borne by each support part and make it uniform.For this purpose, it is possible to use a small rolling bearing for the backup roll, downsize the bank and roll, and improve the movement mechanism etc. This provides effects such as simplification.

The details of the bending roll machine of this invention will be explained below based on one embodiment shown in the accompanying drawings.

In Figures 1 and 2, the bed has a single bed, and hydraulic cylinders 2 and 3 are fixed vertically to the left and right ends of the bed 1 and built into the bed, and piston rods are fixed to pistons 4 and 5 inside the bed. 6 and 7 project into the cylinder 2.31.

8.9 is a frame installed at both left and right ends of bed 1.
This frame 8 and 9 have a stomach part +z1o, respectively.

11 woIf'x fJke, Cノ each Llt 10,
11 Piston rods 6 and 7 are connected by shaft i2.13.

2. The lifting parts 1 io and 1 are tiltable around the axis 12.13, and the left-hand member IQ is a hydraulic cylinder 14.
Therefore, it is possible to make a large rotation around the shaft 12.

15 ke top roll and 1lill on both ends 16.
17 is supported by bearings 18 and 19 attached to the elevating members io and ii. Broken bearing 1 on side 10
8, the part 10 is outward by the cylinder 14, that is,
It is designed to come off from the member 10 when it is turned significantly to the left in FIG. This top roll 15 is driven by a motor 20
Drive with.

Reference numeral 21 denotes a pair of bottom rolls, and the shafts at both ends of each roll 21 are supported by a pair of left and right bearing stands 22 so as to be freely rotated by 1W.

Each of the above-mentioned bearing stands 22 is attached to an idle rail 24i in the front and rear direction provided on the idle stand 23 so as to be retractable by .theta.

However, the position of each bearing stand 22 can be adjusted by moving it forward or backward by means of a drive device 25 provided at the end of the bearing stand 23. This drive device 25 is, for example, an electric cylinder having a structure such as an electric motor (a set of screws that drive a feed screw to move an advancing/retracting rod forward and backward).

26 was placed on the middle part of bed 1? (A back-up roll mounting bracket is installed on the trail 27 so that it can freely move forward and backward via a slide bearing 28. A three-wooden backup roll 29 is mounted on this base 26 so that it can move freely through a rolling bearing. It is collected in.

In some cases, each bottom roll 21 is supported by a bank unroll 29 of two trees.

In the bending roll machine having the above configuration, the end of the steel plate 30 to be processed is inserted between the top roll 15 and the bottom roll 21 as shown in FIG.
2 to the rear, that is, to the right in FIG.
Carve out the end surface.

Also, the (1!!) end of the steel plate 30 is also connected to the bearing stand 22.
'rn direction to give an end face, and then attach the bearing stand 22.
is returned to the center, and the hydraulic cylinders 2 and 3 are operated to lower the top roll 15 and lower the top roll 15 as shown in Figure 3.
The steel plate 30 is bent while rotating the bottom roll 21.

The space between the roll 15 and the bottom roll 21 is widened and the bent steel plate 3Q is taken out.

In addition, if the steel plate 30 is bent into a nearly cylindrical shape and cannot be removed just by lifting the top roll 16, raise the top roll 15 sufficiently and then operate the cylinder 14 to move the lifting member 10 outward. That is, when the bearing 18 is tilted to the left when facing away from FIG.
The lifting portion side 10 is tilted approximately horizontally around the shaft 12.

For this reason, the top roll 15 is cantilevered at the bearing 19 of the shaft 17.
1-1 Top [ ] - Pulled out from the wheel 15.

When the bottom roll 21 is moved by moving the bearing stand 22 by the first drive device 25 during the bending process described in niJ, the backup roll 29 also follows the bottom roll 21 along with the mounting base 26 and moves along the idle rail 27. and move.

Of the reaction force generated when the steel plate 30 is pushed in by the top roll 15 during the above-mentioned end bending process 1, the load that the bottom roll 21 receives is determined by the arrows pl and p shown in FIG.
As in 2, the size and direction - will be completely different.

In other words, if only the horizontal component of the load is contained, then i
The load component on the Pi side becomes a dog, and the bottom roll 2
1 tries to cause a displacement toward the Pl side. Due to the twisted vertical load component, the bottom roll 21 is displaced by one angle with the bed 1 via the bank unroll 29.

In the case of this invention, when the bottom roll 21 receives a load from the steel plate 30 that is one year old to be processed (d, the bottom roll 21
The bearing stand 22 supports the very strong r device on the floor, and the vertical load component is transmitted from the bottom roll 21 to the bed 1 via the bank-up roll 29, causing the bottom roll 21 to deform the bed 1. The horizontal load component is the bank up roll 29 and its storage (through one unit 26,
Deformation of the pair of bottom rolls 21 in the same direction is not restricted.

Therefore, while the pair of bottom rolls 21 are used as painted rolls that are free to displace at the same 15 times, the accuracy of round processing is ensured, and the unbalanced loads borne by the bearings of each roll are eliminated and made uniform. This makes it possible to downsize the bank up roll 29 and simplify the moving device, grooves, etc.

Note that the same effect can be obtained not only when only one set of mounts is used to move and support the grasshopper rolls of three or four trees, but also when a large number of mounts are used.

[Brief explanation of drawings]

Fig. 1 is a partially longitudinal front view of the Bendigi roll machine of this invention, Figs. 2 and 3 are partially longitudinal side views of each part of the same, and Fig. 4 is the main part showing a brief processing state. FIG. 1... bed, 2, 3... tears'' 1 king cylinder, 8,
9...Frame, 15...Top roll, 21...
- Bottom roll, 22... Bearing stand, 25... Drive device, 26... Mounting stand, 29... Back unroll. Patent applicant: Fuji Sharyo Co., Ltd. Agent: Kama 1) Text: 2C. ('J 〇- 国 ′ 大す → Convert O& へ■ cS ``r ■ ト■ - JP-A-59-225820 (4) Sato・Maku 0tsu picture 1 ■ Old ''''¥:'11 (N -”d

Claims (1)

[Claims] Both ends of the bed are supported by a frame at both ends of the bed, and a plurality of movable bottom rolls are provided on the bed. A drive means is provided,
In a bending roll machine in which a plurality of backup rolls are installed in the middle part of the bed to support the bottom roll, the bank unroll is placed on an intermediate slide table that is freely movable in the front and back direction and is provided in the middle part of the bed. The bending roll machine was sold out.