JPH03178716A - Plate supporting device for side trimmer - Google Patents

Abstract

PURPOSE:To prevent a plate from warping and deflecting to improve the width precision of a product by providing bottom presser rolls and top presser rolls, which can escape from a pass-line outside the moving area of a side trimmer, between a pair of knives. CONSTITUTION:Bottom presser rolls 4 to press P from the bottom and top presser rolls 5 to press the plate P from the top are provided between a pair of knives 2 which are movable to a plate-width direction. The bottom presser rolls 4 and the top presser rolls 5 are allowable to escape downward and upward from a pass-line outside the moving area of side trimmer. At the center in a plate-width direction, a fixed support roll 3 is provided on both sides of which respective rolls 4, 4, 5, 5 are arranged and above which the top presser roll 5 is also provided. Accordingly, the plate P is held by the bottom presser rolls and the top presser rolls and so prevented from warping and deflecting during cutting to improve the width precision of a product. When the width to be cut is narrow, respective rolls can escape outside the moving area of the side trimmer not to cause time loss for another setup.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a plate support device used for a side trimmer for strips or the like.

<Prior art> Side trimmers are installed in continuous processing equipment for stripping, etc., and are used to adjust the size and shape of boards. A pair of upper and lower rotary knives 2 are installed on a side trimmer main body 1 which is movable in the direction, and a pair of rotary knives 2 are provided (the central part of the plate P in the width direction is supported by a support roll 3 (in some cases, the support roll 3 is not provided). A knife 2 is used to trim both ends of the plate P in the width direction.

<Problems to be Solved by the Invention> When trimming a wide board with the above-mentioned configuration, the distance between the rotary knife 2 and the support roll 3 increases, and the board may warp at point a during cutting. , there is a problem that deflection occurs and sufficient width accuracy cannot be obtained after trimming.

In addition, in order to improve the width accuracy at the time of 19579, a guide plate G may be installed at point a as shown in Figure 6, but since this guide plate G is installed manually, it is difficult to change the plate width. It was necessary to stop the operation of the equipment each time, resulting in a significant time loss.

This invention was made in order to solve the above-mentioned problems, and its purpose is to eliminate warping and bending of the board, improve width accuracy after trimming, and prevent changes in board width. To provide a side trimmer plate support device that can be easily and quickly handled and can greatly reduce time loss during operation.

Means for Solving the Problems> The present invention, as shown in FIGS. 1 and 2, trims both widthwise ends of a tentan P using a pair of knives 2 that are movable in the widthwise direction. In the side trimmer, between the pair of knives 2, a lower presser roll 4 that can press the board P from below and an upper presser roll 5 that can press the temporary P from above are lowered from the bus line to outside the movement area of the side trimmer. evacuation,
A plurality of them are provided in the board width direction so that they can be raised and retracted.

A fixed support roll 3 is provided at the center in the width direction of the board, and a lower presser roll 4 and an upper presser roll 5 are provided on both sides of the support roll 3, and an upper presser roll 5 is also provided on the support roll 3. It is preferable to provide one.

<Operation> In the case of a wide board, the lower presser roll 4 and the upper presser roll 5 on both sides in the width direction of the board are pressed against the board P on the bus line to clamp the board P from above, and the board is cut while being cut. Prevents P from warping and bending. This allows the board width accuracy after trimming to be significantly improved.

In the case of a narrow board, the lower press roll 4 and the upper press roll 5 on both sides in the board width direction are moved downward and upward from the bus line to outside the movement area of the side trimmer, respectively. As a result, the side trimmer main body 1 can move the knife 2 to any desired trimming position without interfering with the lower presser roll 4 and the upper presser roll 5, and can easily and quickly respond to changes in board width.

<Example> The present invention will be described below based on an illustrative example. As shown in FIG. 1, a support roll 3 is placed at the center of the bus line in the width direction between the pair of side trimmer bodies
is fixed via a base 6, and a lower presser roll 4 and an upper presser roll 5 of a predetermined length are installed on both sides of the support roll 3 in the board width direction.
are provided so as to sandwich the plate P from above and below, and an upper pressing roll 5 is also provided above the support roll 3.

As shown in FIG. 2, the lower presser roll 4 presses the board P on the bus line from below and moves downward and retracts from the bus line.
Avoid interference with the moving side trimmer body 1.

That is, a support bracket 7 is provided at the lower part of the exit side of the side trimmer, and a lifting arm 8 is attached to this support bracket 7.
is attached via the support pin 9 and the elongated hole 10, the lower presser roll 4 is attached to the tip of the lifting arm 8 via the bearing 11, the tip of the operating lever 12 is pivoted to the lower end, and the operating lever 12 is rotated. The lifting arm 8 is made to turn in the bus line direction while moving up and down. The operating lever 12 is rotated by a hydraulic actuator 13 such as a hydraulic motor.

The upper presser roll 5 presses the plate P on the bus line from above, moves up and away from the bus line, and removes the side trimmer body 1.
Avoid interfering with

Such a presser roll 5 is attached to the tip of a swing arm 14 via a bearing 15, and the swing arm 14 is rotatable at its base on a support rod 16 that is hooked upward in the board width direction on the entry side of the side trimmer. It is attached to the holder and can be freely rotated in the vertical direction.

Further, an air cylinder 18 is connected to the base of the swing arm 14 via an operating lever 17 to rotate the swing arm 14. This air cylinder 18 is provided for each upper press roll 5, and is attached to a gate-shaped support frame 19 that spans the plate P. Further, a pressure reducing valve may be provided in the middle of the piping of the air cylinder 18 so that the pressing force can be adjusted depending on the cutting condition of the plate P.

The above configuration operates as follows.

(i) In the case of a wide plate, hydraulic actuator 1
3 and the air cylinder 18 are driven in the presser direction, and the center part of the plate is pressed 1. with the support roll 3 and the upper presser roll 5. Further, trimming is performed by holding both sides of the sheet in the width direction between a lower presser roll 4 and an upper presser roll 5.

(ii) If the width of the board is narrow, only the lower presser roll 4 and upper presser roll 5 on both sides in the width direction of the board are retracted from the bus line in one direction and downward, respectively, and the side trimmer body l is moved inward. The trimming is performed by moving the plate P and holding it between only the support roll 3 and the upper presser roll 5 at the center.

<Effects of the Invention> As described above, the plate supporting device according to the present invention has a plurality of lower presser rolls and upper presser rolls that can be retracted from the bus line to outside the movement area of the side trimmer between the pair of knives. , it is possible to eliminate the warpage and deflection of the board during cutting, greatly improving the width accuracy of the product, and it is possible to easily and quickly respond to changes in the board width without stopping equipment operation, reducing time loss during operation. can be significantly reduced.

[Brief explanation of drawings]

Figures 1 and 2 show a front view and a side view of the plate support device according to the present invention when the plate is wide, and Figures 3 and 4 show a similar situation when the plate is narrow. front view, side view,
5 and 6 are schematic front views showing a conventional example. l...Side trimmer body, 2...Rotary knife 3
...Support roll, 4...Lower press roll 5.
... Upper presser roll, 6... Base 7... Support bracket, 8... Lifting arm 12... Actuation lever 13... Hydraulic actuator 14... Swivel arm, 17... Actuation lever I
8...Air cylinder

Claims (1)

[Claims] (1) In a side trimmer that trims both ends of a board in the width direction with a pair of knives that are movable in the board width direction, a lower press roll that can press the board from below is provided between the pair of knives. A board support device for a side trimmer, characterized in that a plurality of upper press rolls capable of pressing the board from above are provided in the board width direction so as to be able to be retracted downward and retracted upward from the bus line to outside the moving area of the side trimmer.