JPH0723194Y2 - Alignment bend detection device in flat cutting machine - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a butt-alignment bending detection device in a flat-cutting machine, and more specifically, when a sheet bundle to be cut is pushed under a cutting blade and is pressed, the sheet bundle to be cut has an error in bending. The present invention relates to an apparatus in which the cutting precision is improved by interrupting the cutting.

[0002]

2. Description of the Related Art Conventionally, a flat-cutting machine receives a bundle of paper to be cut, which has been aligned by a paper aligning machine, on a table, presses it against a side gauge and a back gauge, and rearranges it, and then lowers the paper pressing mechanism. It has been pressed and cut.

[0003]

However, when the sheet bundle to be cut is pressed against the side gauge and the back gauge to be tidied up, and during the feeding process, the sheet bundle to be cut is held down by the lowering of the paper holding mechanism. However, there is a problem that the cutting accuracy cannot be improved because an error may occur in the bending.

[0004]

SUMMARY OF THE INVENTION According to the present invention, several sensors are provided at appropriate positions of a side gauge and a back gauge to detect the proximity of a sheet bundle to be cut, and the sheet bundle to be cut and the back gauge are placed on a table. If all or part of the corresponding sensor remains undetected in the process of pressing it against the gauge and organizing it (the pressing of the cut sheet bundle is uncertain),
If the sheet bundle to be cut still has a bending error when the state is turned on or notified by a buzzer, etc., and the sheet is pushed below the cutting blade, the lower movement of the cutting blade will be interrupted and realignment will occur. The problem is solved by waiting for the detection of the sensor and cutting.

[0005]

The stack of sheets to be cut and stacked by the sheet aligning machine (not shown) is fed onto the table of the cutting machine of the present invention, and is pressed against the side gauge and back gauge on one side on the table. It rearranges and presses the sheet bundle to be cut on the table by lowering the sheet pressing mechanism, and cuts by moving the cutting blade downward. When rearranging on the above table, especially when all or part of the sensors provided on the side gauge and the back gauge are in the non-detection state at the stage of pressing the paper immediately before cutting, the downward movement of the cutting blade stops. The cutting was interrupted, the sheet of paper to be cut was pressed against the side gauge and the back gauge again, re-arranged, and when all the corresponding sensors were in the detection state, the cutting blade moved down and cuts. .

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below with reference to the drawings.

Side gauges 2a and 2b, which are divided into several pieces, are provided on both sides of the rear portion of the table 1. The reason for dividing into several pieces is that if the length is long, it is difficult to obtain the accuracy of the plane, and warpage occurs. This side gauge 2a,
A comb tooth-shaped back gauge 3 is provided in the rear part between 2b so as to move forward and backward.

The side gauges 2a and 2b are provided with a window hole 4 at a position as low as possible, and a sensor 5a for detecting proximity is provided behind the window hole 4.
Are attached to the back gauge 3, and the sensors 5b are attached to the comb tooth groove 3a and both ends of the back gauge 3 in the same manner with the detection surface facing the front. Each sensor 5a, 5b
Is detected as a distance between the front surface of the side gauges 2a, 2b and the back gauge 3, that is, the gauge surface, and the end surface of the sheet bundle P to be cut comes closer within 0.1 mm. Set the alarm to continue to sound. Further, the sensor is set so that only the portion facing the cut sheet bundle operates depending on the size of the cut sheet bundle P.

A paper pressing mechanism 6 is provided on the front portion of the table 1, and a cutting blade 7 is provided in contact with the inside of the mechanism 6. The paper pressing mechanism 6 and the cutting blade 7 descend in the same position until the cut sheet bundle P is pressed, and after holding the cut sheet bundle P, the cutting blade 7 is moved downward again to hold down the cut sheet bundle P. I try to cut it. The cutting blade 7 is connected to the sensors 5a and 5b and a safety device (not shown) controlled by a computer or the like so that the sensors 5a and 5b move downward again when the sensors 5a and 5b are not detected, that is, the cutting operation is not performed. There is.

The bundle of cut paper P supplied onto the table 1 is re-arranged by pressing the end face against one of the side gauges 2a and 2b and the back gauge 3 to check that all the sensors 5a and 5b are in the detection state. Check and lower the paper pressing mechanism 6 to the table 1
When the sensors 5a and 5b are all in the detection state, the cutting blade 7 is moved downward again to hold the cut sheet bundle P between the cut sheet bundle P and the cut sheet bundle P.
If a part of the sensors 5a, 5b is not detected, the safety device such as a computer stops the cutting blade 7 from moving down again and the cutting is interrupted, and the paper pressing mechanism 6 and the cutting blade 7 are re-cut. After moving upward, the cut sheet bundle P is pressed again against one of the side gauges 2a and 2b and the back gauge 3 and when all the detections of the sensors 5a and 5b are confirmed, the sheet is cut again and cut. .

[0011]

As described above, according to the present invention, the sensors for detecting the proximity of the end face of the cut sheet bundle are provided at appropriate places on the side gauge and the back gauge, so that the bundle of sheets can be sensed and registered. It is possible to eliminate the tidying error of, and especially when the sheet bundle to be cut has a bending error at the stage of pressing the sheet immediately before cutting, the cutting is interrupted, so that the cutting accuracy can be significantly improved. Produce an effect.

Further, when there is no bundle of paper to be cut, the blanking due to the lowering of the cutting blade is eliminated, so that there is an effect that damage to the cutting blade and accidents can be prevented.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

2A is a partially enlarged vertical sectional view of a side gauge portion, and FIG. 2B is an enlarged front view of a back gauge portion. .

FIG. 3 is a vertical sectional side view of a paper pressing mechanism and a cutting blade portion.

[Explanation of symbols]

 1 is a table 2a, 2b is a side gauge 3 is a back gauge 4 is a window hole 5a, 5b is a sensor for proximity detection 6 is a paper pressing mechanism 7 is a cutting blade P is a sheet bundle to be cut

Claims (2)

[Scope of utility model registration request] 1. A sheet bundle to be cut supplied to a table is pressed against a side gauge and a back gauge to be organized, and the sheet bundle to be cut is held down by a lowering of a paper pressing mechanism, and the cutting blade is moved downward. A flat cutting machine adapted to cut a bundle of paper to be cut, characterized in that a sensor for detecting the proximity of the bundle of paper to be cut is provided at appropriate positions of the side gauge and the back gauge. Alignment bend detection device in. 2. The lowering of the cutting blade is stopped if all or part of the sensor remains undetected at the stage of pressing the bundle of paper to be cut by the lowering of the paper pressing mechanism, and the rearrangement by the realignment is performed. The apparatus according to claim 1, wherein the cutting is performed after the detection by the sensor.