JPH03294110A - Continuous cutting device for metal plate - Google Patents

Abstract

PURPOSE:To make clearance adjustment in blade assembling unnecessary, to improve working efficiency, and also to obtain a material with small inside distortion so as to improve quality by making a cutter on a cutter axis on one side movable in the cutter axis direction. CONSTITUTION:A metal plate 1 is continuously supplied and engaged with cutters 3 and 6 rotated coaxially with cutter axes 2 respectively so as to be cut in the shape of a band with a constant width. And the cutter 3 and a linear 4 are set and fixed to one of a pair of cutter axes 2, and the cutter 6 is set on the other so that it is freely moved in the axial direction only within the range of a clearance between the fixed cutters 3. Accordingly, adjustment of the clearance is made unnecessary, the cutter 6 which is set capable of making free movement acts to hold the left and right clearances constant all the time so that cutting stress generated in cutting is equal in left and right, and residual strain of cutting streak is made small.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a continuous cutting device for metal plates, and particularly to a continuous cutting device for metal plates used for cutting lead frame materials and the like.

[Conventional technology]

FIG. 4 is an explanatory diagram showing an example of the configuration of the cutter blades of a conventional continuous cutting device for metal plates.

In the figure, 1 is the cut metal plate, 2 is the cutter shaft,
Two of the cutter shafts 2 can be attached manually, and 3 is a disc-shaped cutter attached to this cutter shaft 2, 4 is a liner attached to this disc-shaped cutter shaft 2, and 5 is a cutter attached to this cutter shaft 2. Disc-shaped cutter 3. This is a holding jig for fixing the liner 4 to the cutter shaft.

A disc-shaped cutter 3 and a liner 4 are attached to the two parallel wooden disc-shaped cutter shafts 2 so as to mesh with each other on the left and right sides in the axial direction, and the liner 4 is fixed in the board width direction of each disc-shaped cutter shaft 2 using a holding jig 5. It looks like this.

Next, the operation will be explained.

In the conventional device, a metal plate is continuously fed by a drive device (not shown) and cut into strips with a constant radius by being bitten by a disk-shaped cutter 3 that rotates concentrically with a cutter shaft 2. The metal plate 1 is continuously wound up by a winding machine (not shown).

[Problem to be solved by the invention]

However, because the conventional continuous metal plate cutting equipment is configured as described above, the more strips are attempted to be cut at the same time, the more disk-shaped cutters and liners are used, and the cutting accuracy is reduced. This is due to the accumulation of these individual accuracy (including variations) errors, and therefore the clearance needs to be adjusted, which has the disadvantage of requiring a lot of time for this adjustment. Also, there are limits to adjustment.
There is a problem in that due to a slight imbalance in the clearance between the left and right sides of the cutting strip, internal strain remains in the cutting strip, which may cause deformation after punching into small parts in the next process.

The continuous cutting device for metal plates of the present invention was made to solve the above-mentioned problems, and one of the pair of cutter shafts has a cutter in the axial direction.

By setting the liner fixedly and setting the cutter on the other side so that it can move freely in the axial direction only within the clearance range between the above fixed cutters, the cutter,
Provides a continuous cutting device for metal plates that eliminates the accumulation of liner accuracy errors, eliminates the need for clearance adjustment, minimizes residual distortion in cutting strips, reduces deformation after punching small parts, and improves work efficiency. It is intended to.

[Means to solve the problem]

Therefore, the continuous cutting device for metal plates according to the present invention cuts metal plates by combining a pair of disc-shaped cutters that mesh with two parallel cutter shafts on the left and right sides in the width direction and rotate concentrically with the respective cutter shafts. This is a device that continuously cuts to a desired width, and the cutter on one of the cutter shafts is configured to be movable in the axial direction.

[Effect]

By making the single-axis cutter in this invention movable in the axial direction, there is only one free cutter, which eliminates the accumulation of accuracy errors between the cutter and liner, and also allows the cutting stress generated during cutting to always It works to keep the clearance constant, so it works so that no internal distortion remains in the strip after cutting.

〔Example〕

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A blade assembly of a continuous cutting device for metal plates according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing a blade set of a continuous cutting device for metal plates according to an embodiment of the present invention.

In the figure, 1 is a cut metal plate, 2 is a cutter shaft, and 3
is a cutter attached to the cutter shaft 2, 4 is also a liner, and 5 is a cutter 3. A holding jig 6 for fixing the liner 4 is a cutter configured to move freely in the axial direction.

In one embodiment of the present invention, a case will be described in which a disc-shaped cutter is used as the cutter 3.6.

Next, the operation will be explained. A metal plate is continuously fed by a drive device (not shown) and cut into strips with a constant width by being bitten by cutters 3.6 that rotate concentrically with the cutter shaft 2.

In this case, due to the cutting stress generated during cutting, the cutter 6
The metal plate 1 is always moved to the middle between adjacent cutters 3, 3 so that the left and right clearances are equal, and is continuously cut.The cut metal plate 1 is continuously cut by a winder (not shown). Wind it up.

As described above, according to the continuous cutting device for metal plates according to one embodiment of the present invention, the two parallel cutter shafts 2.2,
This device combines a pair of disk-shaped cutters 3.3 that mesh on the left and right sides in the width direction and rotate concentrically with each cutter shaft 2.2, and continuously cuts the metal plate 1 to a desired width. - By configuring the cutter 3 of the cutter shaft 2 to be movable in the direction of the cutter shaft 2, the pair of cutter shafts 2°2
One of them has a cutter 3 in the axial direction. By setting the liner 4 in a fixed manner and setting the liner 4 so that it can move freely in the axial direction only within the clearance range between the fixed cutters 3, the cutters 3. This eliminates the accumulation of accuracy errors in the liner 4, eliminates the need for clearance adjustment, and sets the cutter 3 so that it can move freely, as shown in Figure 3, so that the cutting stresses Fa and Fb generated during cutting are equal on the left and right sides. As it works to keep the left and right clearance constant at all times, the residual strain on the cutting strips is also minimal, reducing deformation after punching out small parts and improving work efficiency.

In the above embodiment of the present invention, an example of simultaneous cutting of five strips has been described, but the same effect can be obtained even if the number of strips to be cut is changed. Further, the same effect can be obtained by using other cutter methods, including the apparatus shown in FIG. 2 in which the cutter 9 liner is fixed and set in the width direction. Also,
It goes without saying that these cutting objects can be used not only for cutting metal plates but also for other purposes.

(Effects of the Invention) As explained above, according to the continuous cutting device for metal plates of the present invention, the cutter of one cutter shaft is made movable in the direction of the cutter axis, so that the cutter when the blades are assembled can be This eliminates the need for adjustment, improves the efficiency of one operation, and produces materials with less internal distortion, resulting in improved quality.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a blade assembly according to one embodiment of the present invention, FIG. 2 is an explanatory diagram showing a blade assembly according to another embodiment of the invention, and FIG. 3 is an explanatory diagram showing the cutting stress generated during cutting. FIG. 4 is an explanatory diagram showing a blade set of a conventional continuous cutting device for metal plates. In the figure, 1 is a metal plate, 2 is a cutter shaft, 3 is a cutter, 4 is a liner, 5 is a holding jig, and 6 is a cutter movable in the direction of the cutter axis. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] A device that continuously cuts a metal plate to a desired width by combining two parallel cutter shafts with a pair of disk-shaped cutters that mesh on the left and right in the width direction and rotate concentrically with each of the cutter shafts, A continuous cutting device for metal plates, characterized in that a cutter on one of the cutter shafts is configured to be movable in the direction of the cutter shaft.