JPH0819996A - Rotary cutter for soft product - Google Patents

Abstract

PURPOSE:To realize an optional size change without changing a cutter roll and anvil so as to save a cutter roll changing time for size change in a rotary cutter for cutting continuously-fed soft products at a regular size. CONSTITUTION:This cutter is provided with a cutter roll 2 having three cutter edges 1a, 1b, 1c equipped at an equal interval and a radius (r) to a cutter edge tip, an anvil arranged opposite thereto and having three grooves 3a, 3b, 3c at an equal interval in the tangential direction and the radius (r), a motor 5 for driving the cutter roll 2, a motor 6 for driving the anvil 4, conveyors 7, 8 and the like, and cuts continuously-fed products 9 at a regular size. By providing a speed difference between a rotation speed of the cutter roll 2 and that of the anvil 4 to arrange so that cutting can not be performed when the cutter edge enters the anvil groove, a size change to an optional regular size can be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary cutter device for cutting a continuously fed soft product into arbitrary size.

[0002]

2. Description of the Related Art A conventional rotary cutter device for continuously cutting soft products of fixed length has a cylindrical shape and a cutter roll arranged so that the circumferential length between cutter blades is equal to the cutting length of the product. It is a cutting device with a combination of anvils, and when changing the cutting length by changing the size, it was used by exchanging it with another cutter roll having a cutter blade circumference corresponding to the new cutting length.

[0003]

By the way, in the conventional method as described above, there is a problem that the cutter roll needs to be replaced every time the size is changed, which causes a time loss, and at the same time, the cutter roll is always provided for each quality. There was a problem in that there was a problem that the initial investment amount increased, which was uneconomical, and the problem of maintenance and management remained.

It is an object of the present invention to provide a new rotary cutter device for soft products which solves the above problems.

[0005]

As a structure for achieving the above object, a rotary cutter device for soft products according to the present invention is a rotary cutter device for cutting a continuously supplied soft product to a predetermined length. The cutter roll having the cutter blade and the anvil having a plurality of grooves in the cutting line direction are arranged in opposition to each other, and a speed difference is provided between the rotational speed of the cutter roll and the rotational speed of the anvil. The feature is that it does not cut when the blade enters the groove of the anvil.

[0006]

Since the rotary cutter device of the present invention is constructed as described above, the anvil is rotated by setting a predetermined velocity diagram, while the cutter rolls other than the cutter blade used for cutting while changing to an arbitrary speed. If the speed of the cutter blade is controlled so that it passes through the cutting point at the same time as the groove of the anvil, the supplied product will not be cut even if the cutter blade passes through the cutting point. It is possible to cut while leaving any number of blades empty.

Further delicate identification of the cutting position can be obtained by controlling the speed of the cutter roll.

As described above, it is possible to change the cutting length to an arbitrary length without exchanging the cutter roll with this apparatus.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of the cutter roll and the anvil provided with three cutter blades at equal intervals, showing a case where each cutter blade is cutting a continuous product, and FIG. It is explanatory drawing in the case of an example which cuts every other performing cutter blade.

As shown in these figures, the apparatus of this embodiment is
A cutter roll 2 having three cutter blades 1a, 1b, 1c arranged at equal intervals, and having a radius r to the tip of the cutter blade, and a cutter roll 2 arranged so as to face the cutter roll 2 and provided on the outer peripheral surface. Similarly, three grooves 3a, 3 in the direction of the cut line provided at equal intervals
b, 3c, an anvil 4 having a radius r, a motor 5 for driving the cutter roll 2, a motor 6 for driving the anvil 4, conveyors 7, 8 and the like. Cut to the length L1 or L2.

In FIG. 1, assuming that the cutting speed is n times / minute, the product cutting length L1 is the cutter blade peripheral length L1 '= 2π · r.
If it is slightly smaller than / 3, both cutter roll and anvil are L1 '/ L1 from conveyor speed L1 · n / min.
If the product is rotated at double the peripheral speed, the product will be 10 on the anvil.
The cutting blade 1a is cut at the position a, the cutting blade 1b is cut at the position 10b, and the cutting blade 1c is cut at the position 10c, so that the length L1 is continuously cut.

Next, FIG. 2 shows a case where the size is changed and the cutting is performed with a cutting length L2 which is almost twice as long as that in the case of FIG.

In FIG. 2, the cutting length is about 2 in the case of FIG.
Since it is double, it is sufficient to cut every other cutter blade. First, the anvil speed is as follows: the cutting position of the first product is 11a in front of the groove 3a by α radian, the second cutting position is 11b in front of the groove 3c by α radian, and the third cutting position is It is rotated at a constant speed so as to be at a position 11c in front of the groove 3b by α radian.

If the cutter roll is also rotated at the same speed as the anvil, the peripheral speed of the anvil and the peripheral speed of the tip of the cutter blade will be the same. Therefore, when the first blade of the product is cut by the cutter blade 1a at the position 11a on the anvil, The cutter 1b cuts at a position 11c which is about ½ of the original cutting length L2.

In order to avoid this cutting, the cutter blade 1b may be placed on the groove 3b on the anvil. For this reason, as shown in FIG. 3, after cutting the first sheet, the speed of the cutter roll is slowed to be delayed by α radians.

Next, when the cutter roll continues to rotate at the same speed as the anvil, the cutter blade 1c moves to the cutting position 1 of the second sheet.
2 because it has passed 1b and is in the position of groove 3c on the anvil
The cutting of the second piece will not be performed.

In order to cut the second sheet at the position 11b on the anvil, it is necessary to accelerate the speed of the cutter roll after passing through the groove 3b in FIG.

By repeating the above-described operation cycle of the cutter roll, it becomes possible to achieve continuous cutting of the new size L2.

In the above embodiment, the cutter roll is provided with three cutter blades at equal intervals, and the radius up to the tip of the cutter roll blade and the anvil radius are the same, but in practice, depending on the combination of cutting sizes. A plurality of arbitrary cutter blades are provided at arbitrary intervals, and the diameters of the cutter roll and the anvil are set to optimum values.

Also, the number and spacing of the grooves on the anvil are set optimally depending on the situation.

In the above-mentioned embodiment, the drive system is also driven by a motor for both the cutter roll and the anvil, and the anvil has a constant speed. In addition, any driving method can be used to set each arbitrary velocity diagram to achieve the purpose.

As described above, the rotary cutter device of the present invention is not limited to the embodiments described above, and can be modified in design within the scope of the technical idea of the present invention, and any of these can be applied to the present invention. Belong to the technical scope.

[0023]

According to the rotary cutter device for soft products of the present invention, when the soft products that are continuously supplied are cut to a fixed length, the cutter blades to be installed according to the distribution of cutting length types for size change. By optimizing the parameters such as the quantity, the number of grooves on the anvil, the diameter and speed of the cutter roll and anvil, it is possible to change the size to any standard size without replacing the cutter roll and the anvil. Thus, there is an effect of eliminating waste such as the conventional provision of cutter rolls for each size and consumption of cutter roll replacement time when changing sizes.

[Brief description of drawings]

FIG. 1 is a side view of a rotary cutter device according to an embodiment of the present invention.

FIG. 2 is a side view for explaining a cutting operation in which the rotary cutter device is resized.

FIG. 3 is a cutter roll velocity diagram when changing the size of the device.

[Explanation of symbols]

 1a, 1b, 1c Cutter 2 Cutter roll 3a, 3b, 3c Groove 4 Anvil 5,6 Motor 7,8 Conveyor 9 Product 10a, 10b, 10c Cutting point 11a, 11b, 11c Cutting point

Claims (1)

[Claims] 1. A rotary cutter device for cutting a continuous supply of soft products to a constant length, and a cutter roll having a plurality of cutter blades and an anvil having a plurality of grooves in a cutting line direction are combined to face each other. However, a speed difference is provided between the number of revolutions of the cutter roll and the number of revolutions of the anvil, and it is set so as not to cut when the cutter blade of the cutter roll enters the groove of the anvil. Cutter device.