JPH05200620A - Positioning device for cutting tool of slitter - Google Patents

Abstract

(57) [Summary] [Purpose] In a slitter that cuts strips of plate material, it is possible to quickly and axially position a cutting tool on a rotary shaft with a single cylinder. [Structure] Instructing means 15 for instructing the position of each blade 5a, 5b ... Is provided, and is moved in the axial direction by a driving means such as a servo motor 16. The movement of the instruction means 15 is performed by automatically calculating the movement amount by inputting data such as the cutting width.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutter positioning device of a slitter for cutting a strip material such as a rolled steel sheet in the longitudinal direction.

[0002]

2. Description of the Related Art Conventionally, a slitter of this type has a plurality of circular blades mounted on upper and lower rotary shafts arranged in parallel with each other.
While passing the plate material between the rotary shafts, the plate material is cut by the blades of the rotary shafts paired with each other. The width of the plate to be cut is determined by the distance between the blades on the rotation axis, and therefore, when cutting with different widths, it is necessary to change the distance between the blades accordingly. It is necessary to work out such a space dimension and set each blade at a position corresponding to it. Conventionally, the above-described indexing of dimensions was applied to a predetermined calculation formula and calculated, and the intervals were successively measured with a caliper.

[0003]

Therefore, in the prior art, not only is it necessary to perform a troublesome calculation such as indexing of dimensions, but also the blade is moved each time while measuring the dimensions with a caliper, and its position is finely adjusted. However, it has to be positioned and fixed, which makes the work extremely complicated,
Moreover, there is a drawback that accurate positioning is difficult.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional drawbacks and to provide a cutter positioning device for a slitter capable of efficiently positioning the cutter.

[0005]

In order to solve the above problems, the first invention of this application is to cut a plate material into a width corresponding to the interval between the blades by a plurality of circular blades arranged on the rotary shaft. In the slitter, it is characterized in that the slitter comprises an instructing means for instructing a setting position of each blade and a driving means for moving the instructing means to the instructed position by a predetermined amount.

Similarly, the second invention of this application is the above first invention.
In the invention, the input means for inputting data such as the cutting dimension and the number of threads of the plate material to be cut, and the calculating means for calculating the position of each blade based on the input data of the input means are provided. It is characterized in that the indicating means is moved by a predetermined amount based on the calculation result.

[0007]

The driving means moves the instructing means for instructing the position of the blade to a position corresponding to the cutting size and stops the operation. In this state, the corresponding blade is moved on the rotary shaft and fixed at the position designated by the pointing means. The tool position calculation means is
Based on the data input by the input means, for example, the distance from the reference point to the blade position is calculated.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIGS. 1 to 3, 1 is a main body frame,
A pair of upper and lower rotating shafts 3 and 4 which are parallel to each other are mounted between the left and right columns 2 and 2 of the main body frame 1. These rotary shafts 3 and 4 are rotationally driven by a drive device (not shown), and each has a large number of circular blades 5a, 5b ...
6b are mounted at intervals. These cutlery 5
a, 5b ..., 6a, 6b ... are, for example, the respective blades 5a, 5b
, 6a, 6b are fixed on the rotating shafts 3 and 4 by a known hydraulic pressing means or the like provided in the boss 7 and can be moved in the axial direction by releasing the hydraulic pressure.
If the cutting size changes, it is moved in that way and fixed in place.

Above the rotary shafts 3 and 4, two upper and lower rail bases 8 and 8 are mounted along the upper end of the body frame 1, and these rail bases 8 and 8 are parallel to each other. Rails 9, 9 are mounted parallel to the rotating shafts 3, 4. Reference numeral 10 is a vertical plate-shaped moving table, and the rails 9 are provided in the grooves 11 of the block fixed to the back surface thereof.
9 is fitted to support the movable table 10 so as to be slidable in the axial direction. An elevating cylinder 12 is attached to the surface of the moving table 10 such that the tip of the rod 13 thereof faces downward, is fixed to the tip of the rod 13, and is guided vertically by a rail 25 of the moving table 10. A micrometer 15 as an indicator of the present invention is attached to the horizontal lower end of the plate 14 so that the tip thereof projects horizontally in the axial direction of the rotary shafts 3 and 4.

Further, a servo motor 16 as a driving means of the present invention is fixed to the left end of FIG. 2 near the upper end of the body frame 1. This servo motor 16
The drive shaft 17 of FIG. 2 projects rightward in the drawing, and the feed screw 18 is connected to the tip thereof. The feed screw 18 is rotatably supported by a block 19 in the vicinity of the upper end of the main body frame 1, and is screwed into a screw block 20 on the rear surface of the moving table 10 to which the elevating cylinder 12 is attached. Penetrates. That is, when the servomotor 16 is driven, the moving base 10 moves in the left-right direction via the screwed portion of the feed screw 18 and the screw block 20 according to the rotation direction of the servomotor 16. The amount of movement is
It depends on the amount of rotation of the servo motor 16.

FIG. 4 is a block diagram of an apparatus composed of a microcomputer for controlling the drive of the servo motor 16 and the lifting cylinder 12, and in FIG.
Is a CPU (central processing unit) that performs various controls and calculations, 2
Reference numeral 2 denotes a ROM (read only memory) for storing programs and the like, and 23 denotes a RAM (random access memory) for storing calculation results and other data. The keyboard 24 uses the CPU to determine the width of the product to be cut, the number of threads, etc.
21 for inputting. Based on the input data, the CPU 21 calculates the positions of the upper side blades 5a, 5b ... Based on the arithmetic expression stored in advance in the ROM 22, and outputs a control pulse signal to the servo motor 16 according to the result. The output to the servo motor 16 is performed each time the operator presses the start switch.

FIG. 5 shows blades 5a, 5b ..., 6a, 6b.
7 shows the relationship between the position and the cutting width of the product 26 to be cut. The blades 5a, 5b on the upper rotary shaft 3 which is the female side, and the blades 6a, 6b on the lower rotary shaft 4 which is the male side are ...
Are arranged so as to fall within the intervals at odd-numbered intervals occurring between the respective blades 5a, 5b, ... Of the female side. Further, the female side blades 5a, 5b ... And the male side blades 6a, 6b.
A clearance D is provided between and in the axial direction. The product widths S ₁ , S _2, ... Are determined by the spacing on the female side, the odd-numbered product width is the same as the spacing between the blades 5a, 5b, ..., and the even-numbered product width is the length of the spacing. Double the blade width t of the male side blades 5a, 5b ... Now, the first knife 5a on the female side is the reference point A for positioning.
, And the other blades 5a, 5b ... Are installed while moving from the reference point A for each N1, N2 ..., The calculation formulas for the respective movement amounts N1, N2 ...

N1 = S1 + t N2 = S2- (t + D1 + D2) N3 = S3 + t N4 = S4- (t + D3 + D4)

Next, the blades 5a, 5b, ...
6a, 6b ... Position setting work will be described with reference to the flowchart of FIG. First, when the program starts, the operator selects whether to perform the above-mentioned setting automatically or manually (step S1). When the automatic mode is selected, it is confirmed whether or not the micrometer 15 is at the origin set back by L from the reference point (step S2). When it is confirmed that it is at the origin, the pattern P, the number of times R, the width S, the clearance D, etc. are input from the keyboard 24 (step S3). Based on these input data, the CPU 21 calculates the movement amount N and stores the value in the RAM 23. In this state,
When the start switch is pressed, the number of times is determined (steps S4 and S5). When the number of times is 0, the servo motor 1
6 is driven and moved from the origin to the reference point by the distance L (step S6). On the other hand, when the number of times is the upper limit value 25, it is determined that the process is completed and the process is moved to the origin side (step S
7).

In the above step S5, 0 or 25
In other cases, the servomotor 16 is driven by the first movement amount N1 to move the moving table 10 and stop (step S8). In this state, the lift cylinder 12 is driven to move the micrometer 15 to the height position of the blades 5a, 5b ,.
It is lowered by 0 mm, and it is in a standby state until the start switch is pressed again (step S10). Also, at this time, R
The number-of-times recording section in AM is updated to n = n + 1 (step S9). As a result, the position of the second female-side tool 5b has been determined, and the operator
The setting of the first blade 5b is completed by moving and fixing b to that position (step S11). Two
When you press the start switch for the second time (step S12),
After driving the elevating cylinder 12 to retract the micrometer 15 upward (step S13), the above-mentioned work is repeated. The male side blades 6a, 6b ... Are positioned after the female side blades 5a, 5b.
Use a clearance gauge based on the position of.

In the above embodiment, the micrometer 15 is used as an indicator for the position of the blades 5a, 5b ..., This is for making fine adjustments such as installation error when installing the apparatus, and other It may be one.

[0017]

As described above, according to the present invention, since the tool for pointing the tool position is automatically moved to the tool position, the tool position can be changed accurately and quickly. is there. Further, in the second invention of this application, the position of each blade can be automatically calculated only by inputting the data such as the cutting width and the number of threads of the product to be cut, which is a troublesome blade as in the past. No need to calculate position. In addition, the positioning device of the present invention can be installed in the slitter independently of the blade, and has an effect that it can be installed in the existing slitter at low cost without major modification.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of an apparatus according to the present invention.

FIG. 2 is an overall front view of the device of the present invention.

FIG. 3 is likewise a side view of the main part.

FIG. 4 is a block diagram of the device of the present invention.

FIG. 5 is a front view of a blade portion showing the relationship between the position of each blade and the amount of movement.

FIG. 6 is a flowchart showing the flow of a tool positioning operation.

[Explanation of symbols]

 3, 4 ... Rotating shafts 5a, 5b ... Blades 6a, 6b ... Blades 15 Micrometer (indicating means) 16 Servo motor 21 CPU (calculating means) 24 Keyboard (inputting means)

Claims (2)

[Claims] 1. A slitter that cuts a plate material into a width corresponding to the interval between the blades by a plurality of circular blades arranged on a rotary shaft, and an instruction means for instructing a setting position of each blade and the instruction means. A cutter positioning device for a slitter, comprising: a driving unit that moves a predetermined amount to a designated position. 2. An input means for inputting data such as a cutting dimension of a plate to be cut and the number of threads, and a calculating means for calculating the position of each cutting tool based on the input data of the input means. The slitter according to claim 1, wherein the instruction means is moved by a predetermined amount based on the calculation result of.