JPH01210211A - No-blurr shearing machine - Google Patents

Abstract

PURPOSE:To prevent the occurrence of burr and blurr by vertically adjusting a chock supporting an upper round tooth shaft above a lower straight tooth by a taper member to control the depth of cut for material to be cut, so that nipping and reverse shearing are caused by rolls in the next process. CONSTITUTION:A push-pull bolt 10 is rotated to slide a taper member 9, whereby the vertical motion of a chock 6 is adjusted to change the distance between an upper round tooth 7 and a straight tooth 4. An electric motor 11 is driven to rotate a screw shaft 13 through a speed reducer 12, so that a frame 17 is shifted by the screw-engagement with a female screw 14 to move the upper round blade 7 in the direction of an arrow A. Accordingly, a plate 20 placed and transported on a receive roller is cut about 65-90% of board thickness by the lower straight blade 4 and the upper round blade 7 to be cut to half, and then pressed and reverse-sheared by rolls.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a cutting machine for metal plates or coils. More specifically, when cutting a metal plate, etc., there will be burrs or burrs on the cut surface, and if the cut surface is used as a product as it is, it may cause problems such as getting caught when handling, so the metal plate, etc. should be cut in half once. The present invention relates to a cutting machine that uses a two-stage shearing method that performs reverse cutting and separation.

<Conventional technology> Conventionally, shearing was performed and cut at the same time using upper and lower round blades, a combination of a round blade and a straight blade, or a combination of a straight blade and a straight blade, resulting in defects such as burrs or burrs on the cut surface. was occurring.

<Problems to be solved by the invention> Conventionally, cutting was performed at the same time using the upper and lower cutters, resulting in burrs or burrs, but by controlling the depth of cut of the material to be cut, half-cut state can be achieved in the first step. After that, in the second step, the material is pressed by rolls to generate a reverse cut and separate to complete the cutting work.By applying the roll slitting method, which has been put into practical use in recent years, and shirring, there is no paris at the cut part. Another object of the present invention is to provide a cutting device that eliminates the occurrence of burrs.

<Means for solving the problem> In order to cut the metal plate in half and then press and clamp it with rolls to cause a counter-tributary cut, a blade head that can be controlled with high precision in the direction of the cutting depth is installed, and the cutting depth is This method eliminates burrs or burrs by cutting in half while controlling the amount, and then sandwiching and separating with rolls. An example will be described below with reference to the top drawing. <Example> A stand 2 is provided on a base 1, and a straight blade 4 is screwed onto it. A slide rail 16 is provided on an upper frame 5, and a slide guide 15 is attached. The frame 17 is suspended through the frame 17.

Inside the frame 17 is a fixed taper member 8 and a push/pull bolt 1.
A sliding taper member 9 and a chock 6 connected to the chock 6 are installed, a shaft supported by a bearing is provided in the chock 6, and a round cutter 7 is fixed to this shaft. On the other hand frame 1
A female thread 14 is provided on the upper part of the screw shaft 13, and a threaded portion of a screw shaft 13 is screwed into the screw shaft end.

Further, receiving rollers 17 are provided on the entry and exit sides of the straight blade.

Function> The plate 20 carried on the receiving roller 17 is cut in half by the lower straight blade 4 and the upper round blade 7. When cutting in half, do not cut until the board is completely separated, approximately 65 to 90 mm thick.
%Cut the plate in half. In that case, cutting is performed using the lower straight blade 4 and the upper round blade 7, but in that case, the electric motor 11 is driven, the screw shaft 13 is rotated via the reducer 12, and the frame 17 is screwed into place by the threaded relationship with the female screw 14. ('J' and drive the upper round blade 7 in the direction of arrow A until it reaches point 7 and cuts in half. Adjust the depth of cut according to various plate thicknesses by pushing and pulling). The vertical movement of the chock 6 is adjusted by sliding the taper member 9, and the round blade 7
This is done by changing the distance between the straight blade 4 and the straight blade 4. The movement of the upper and lower blade heights of the chock 6 is, for example, 1/100 of the taper member 8.9.
In this case, if the push/pull bolt is moved by l tnm, the chock 6 will move by o, o i mm, which means that it can be controlled with high resolution, and the initial purpose of half cutting can be fully achieved.

<Effects of the invention> By adopting a blade attachment mechanism that allows fine control in the vertical direction, roll slitting (no burr) cutting, which was conventionally limited to slitting, becomes possible, and the cut plate It can be used as is, and has great effects such as improved yield, good paint finish, and convenient handling.

[Brief explanation of the drawing]

The first tooth is a front view of the present invention, and FIG. 2 is a side view of the same. 1-Base 2-Stand 4-Bottom straight blade 5-Frame 6-Chock 7-Upper round blade 8- Fixed taper member 9-Taper member 10-Push/pull bolt 11-Electric motor 12-Reducer 13-Screw shaft 14- Female thread 15- Slide guide 16- Slide rail 17-Frame・　　　　　　-Plate

Claims (1)

[Claims] An upper round blade is provided on the lower straight blade, a combination mechanism of a tapered member is provided in the vertical direction on the upper round blade, and the tapered member on one side is made slidable by a push/pull bolt. A burr-free shear characterized in that the depth of cut can be set by making minute adjustments to the shear.