JPH09123312A - Automatic scales for regulating top of slitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to simply and accurately conduct the regulation of a top position in a slitter of the type for manually regulating the position of the top for marking or cutting by suppressing the economic burden as much as possible. SOLUTION: A guide rail 13 disposed in parallel with the rotary shaft of a slitter is bridged between support frames 11 and 12 mounted at the body of the slitter, and a slider 15 is mounted at the rail. The distance from the present position of the slitter 15 to a positioned point is calculated by a controller 17 which receives a regulation command. The generation command of the pulses of necessary number flows to a pulse generator 17c from a control circuit 17b to drive a stepping motor 16d. Thus, the slider 15 is sequentially moved to the positioning point of a top. A gage 18 mounted at the slider 15 displays the point, and hence the top 6 is moved to the instructed position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slitter for scoring and cutting corrugated board and cardboard, and in particular, it is of a type for manually adjusting the position of a scoring piece (ruled roll) or a cutting piece (blade). The present invention relates to an automatic scale for adjusting the position of a piece used in a slitter.

[0002]

2. Description of the Related Art In a slitter piece, a ruled line cutting or cutting pattern changes variously, and it is necessary to reset the piece position accordingly. It is mounted so that it can slide in any direction, and the position can be moved to the required point.

There are two types of slitters, one for manually adjusting the position of the frame and the other for automatic (slitter).

[0004]

With the auto slitter,
When you input the cutting width, the pattern of ruled lines, the ruled line interval, and the width of the passing sheet, the positioning dimension of the piece is automatically calculated,
The piece moves to the specified position and is set,
This type of slitter with a moving mechanism of the piece requires a large device and is very expensive.

On the other hand, the manually adjustable slitter is simple and inexpensive. However, this type of slitter has the following drawbacks regarding the adjustment of the position of the frame. That is, in this type of slitter, the distance from each piece to the positioning point of each piece is calculated based on the piece at one end, and the piece is moved to the calculated position while measuring with a measure. However, since the distance calculation becomes complicated depending on the ruled line cutting and cutting patterns, calculation errors are likely to occur, and if not noticed, all processed products will be wasted.

Further, since the piece is positioned while measuring the dimension with the measure, the workability is poor, and since there is no standard for judging whether the measure is correctly hit, it is difficult to expect high precision adjustment.

An object of the present invention is to solve such a problem by an inexpensive method as much as possible.

[0008]

As a means for solving the above problems, the present invention provides an automatic scale for a manually adjustable slitter that assists the adjustment work.

This automatic scale has a slide guide which is fixed to the body of the slitter in parallel with a rotary shaft having a piece, a slider which is guided by the slide guide, a slider drive mechanism which uses a stepping motor as a power source, and a slider. A position control device and a piece position matching gauge attached to the slider are provided, and the control device sets the position from the current position of the slider to the positioning point of the adjustment target piece based on a piece position change command input from the outside. It includes a control circuit that calculates a distance and issues a pulse generation command to the pulse generator connected to the stepping motor as many times as necessary to move the slider to a target point. When operated, the slider moves to the positioning point of each piece in sequence, and the accompanying gauge displays the positioning point of the piece. Those were Unishi.

[0010]

According to the auto scale of the present invention, the positioning point of the piece is automatically calculated, the slider moves to that position, and the gauge integrated with the slider displays the positioning point. Then, the operator adjusts the piece position while checking the displayed points. Therefore, a calculation error does not occur, and the position is accurately displayed, so that the adjustment error is reduced. For example, the adjustment by the conventional method may cause a deviation of several millimeters, but when using the scale of the present invention, the error of the frame position is ± 0.5 mm.
It was settled within.

Further, since the scale of the present invention does not move the piece itself, it does not require a large-scale mechanism. Only one small stepping motor is required as the power source, and it can be manufactured at low cost.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 3 shows an example of an existing manually adjustable slitter. In the figure, 1 is a slitter, 2 is a sheet feeding device, and 3
Is a belt conveyor that carries out processed sheets.

The illustrated slitter 1 includes feed rolls 4, 5
There is a ruler piece 6 between them. The piece 6 is attached to a pair of parallel rotary shafts 7 (only the upper shaft is shown in the figure) with a key so as to be slidable in the axial direction. In this slitter, the number of pieces 6 is 5, and a maximum of 5 ruled lines are inserted. Locking means for fixing the piece position is also provided, but this is not shown.

The adjustment of the position of the frame so far in this slitter is based on, for example, the leftmost frame as viewed from the sheet feeding side, and the distance from this to the next (second) frame, and the next (third) frame.
The distance to each piece, and further the distance to the fourth and fifth pieces are calculated, and a measure is applied to move each piece to the calculated position. As an example of distance calculation at this time,
The most typical A type case (cutting and ruled lines in 3 sets) is given below. As shown in FIG.
Cut into 3 sheets with each of the sheets of width W, and use the width F as a flap
When inserting the ruled line from both ends, use the leftmost blade piece as a reference, and for the cutting blade piece, from here (second)
Calculate the distance W to the blade piece, the next (3rd) distance to the blade piece 2W, and the distance to the fourth blade piece 3W, and apply a measure to move each blade piece to the calculated position. .

Next, regarding the calculation frame, the first frame is F from the reference frame, the next (second) is (WF), the next (third) is (W + F), and the next (fourth). Is (2W-F),
The fifth is (2W + F), the sixth is (3W-F), etc., and addition, subtraction, or multiplication is performed to obtain the distance (positioning point) from the reference piece (other calculation methods are of course also available). . In the case of this pattern, the calculation is relatively simple, but if the number of taken lines, the number of ruled lines is large, or the position where the ruled lines are inserted is irregular, it is confusing and a calculation error is likely to occur.

The auto scale of the present invention exhibits excellent effects in such a slitter.

FIG. 1 shows an embodiment of the auto scale. The auto-scale 10 includes a pair of left and right support frames 11, 12, a guide rail 13 and a cover frame 14 which are horizontally mounted between the support frames, and the guide rail 1.
Slider 15 to be fitted with dovetail groove 3
1, a slider drive mechanism 16, a slider position control device 17 shown in FIG. 1B, and a piece position matching gauge 18 attached to the slider 15.

The drive mechanism 16 includes support frames 11 and 12.
Belts 16a, 16 rotatably attached to
b, and a timing belt wheel 1 having one end and the other end fixed to the slider 15 and wound between the two belt wheels 16a and 16b.
6c and a stepping motor 16d for rotating the timing belt wheel 16a. Power transmission to the slider may be performed by other means, for example, a ball screw mechanism or the like, but the timing belt and the belt wheel are less costly and advantageous in terms of assembly and maintenance.

As shown in FIG. 1 (b), the control device 17 has an input section 17a for adjusting command data, a control circuit 17b,
A pulse generator 17c and an amplifier 17d are provided.

In the exemplary auto-scale 10 constructed in this way, the guide rails 13 are mounted on the slitter so that the guide rails 13 are parallel to the rotation axis of the slitter. Since the main body of the slitter has the frames for supporting both ends of the rotary shaft on both sides, it suffices to fix the support frames 11, 12 on the frames on both sides, and the assembling is easy. FIG. 3 shows an outline of the assembled state by a chain line. In this state, as shown in FIG. 2, the gauge 18 is arranged at a position passing through the vicinity of the outer periphery of the piece 6 so that the reference surface of the piece and the reference portion (position display portion) of the gauge can be easily collated. .

Next, the operation of the auto scale 10 will be described.

The width of the sheet passing sheet, the number of ruled lines to be inserted in the sheet, and the ruled line interval are input to the control device 17 as data for adjusting the frame position. In the case of ruled lines of standard patterns, each pattern may be stored in advance in a storage device in the control circuit 17b, and a necessary pattern may be designated by a specific number or code to be called.

When the adjustment command is given in this way, the current position of the slider 15 (control circuit 17b in the control circuit 17b).
Is always calculated by calculating the slider movement amount from the reference position) and the distance from the frame positioning point is calculated.

This calculation is performed for each target frame when there are a plurality of adjustment target frames.

Further, the number of pulses required to move the slider 15 to the calculated position (target point) is continuously calculated, and the pulse generator 17c is generated from the control circuit 17b so as to generate the number of pulses. A command is sent to. This causes the pulse generator 17c to flow the number of pulses instructed to the stepping motor 16d.

Since the stepping motor is a motor whose operation is controlled by the number of pulses, this motor 1
The slider 15 driven by 6d moves to the positioning point of the first frame calculated and stops. Then, the operator moves and sets the piece to the position designated by the gauge 18. After that, when an adjustment completion signal is sent, the slider 15 moves to the next positioning point and stops. Therefore, the next piece is moved to the designated position and set, and the above-mentioned work is sequentially repeated as necessary. Therefore, accurate position adjustment can be easily performed.

The distance may be calculated first for all the target pieces, or may be calculated for one piece first and the position of the next piece may be calculated when the position adjustment is completed. .

Further, the gauge 18 is arranged at a position where it comes into contact with the end face of the piece, and the structure is such that it can be retracted from this position to a place where interference with the piece can be avoided. In this retracted state, the slider is moved and the gauge is positioned at the positioning point. It is also possible to place a piece on 18 for positioning.

[0029]

As described above, when the auto scale of the present invention is used, the positioning point of the piece is automatically calculated, the slider moves to the calculated position, and the gauge integrated with the slider displays the positioning point. Therefore, the operator may move the piece to the instructed position after inputting the necessary data, and the calculation error does not occur. Therefore, processing defects do not occur and time loss and economic loss are eliminated.

Further, since the positioning point is accurately displayed and the positioning can be performed by collating with it, the adjustment accuracy and the work efficiency can be improved.

Further, since the scale of the present invention is simple and can be manufactured at a relatively low cost, there is no fear of significantly increasing the total price of the slitter. In addition, it can be easily added to existing slitters as well as newly created slitters, and users who have already introduced manually adjustable slitters need only add scales, which imposes a heavy economic burden on users. Can also be prevented.

[Brief description of the drawings]

FIG. 1A is a front view showing an embodiment of an autoscale of the present invention, and FIG. 1B is a plan view of the same scale.

FIG. 2 is a view showing a positional relationship between a slitter piece and an auto scale as viewed from the side.

[FIG. 3] (a): Side view of a slitter for manually adjusting the piece position (b): Plan view of the same

FIG. 4 is an explanatory diagram of an example of distance calculation to a position point of a piece.

[Explanation of symbols]

 1 Slitter 6 Piece 7 Rotating Axis 10 Auto Scale 11, 12 Support Frame 13 Guide Rail 15 Slider 16 Drive Mechanism 16d Stepping Motor 17 Controller

Claims (1)

[Claims] 1. A scale for adjusting the position of a piece for use in a slitter for manually adjusting the positions of a ruled line inserting piece and a cutting piece, which are attached to a rotary shaft so as to be prevented from rotating with a key so as to be slidable in the axial direction, A slide guide that is fixed to the body of the slitter in parallel with the rotation axis, a slider guided by the slide guide, a slider drive mechanism using a stepping motor as a power source, and a slider position control device,
Having a piece position matching gauge attached to the slider,
The control device calculates the distance from the current position of the slider to the positioning point of the adjustment target frame based on a frame position change command input from the outside, and targets the slider to the pulse generation device connected to the stepping motor. Includes a control circuit that issues the required number of pulse generation commands to move to a point.The stepping motor is activated by the command from this circuit and the slider moves sequentially to the positioning point of each piece, and the accompanying gauge positions the pieces. Automatic scale for adjusting the position of the slitter's frame so that dots are displayed.