JP2715450B2 - Cutting length learning device for cutter / sorter system - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a cutting length learning device in a cutter / sorter system for continuously cutting a long sheet-like object into a single sheet.

<< Summary of the Invention >> The present invention relates to a cutting length learning device in a cutter / sorter system, which includes a cutter pulse generator for generating a pulse synchronized with the operation of the cutter, and a cutter from a specific position set on the supply side of the cutter to the cutter. Provide a movement amount pulse generator that generates a pulse proportional to the movement amount of the long sheet body between, the distance between the specific position and the cutter set in advance,
Converted to the number of pulses output from the travel pulse generator,
The pulse from the cutter pulse generator and the pulse from the moving amount pulse generator are counted respectively, and the number of pulses counted while the long sheet body moves from a substantially specific position to the cutter is used to count the length of the long sheet body. The cutting length is calculated, and a highly accurate cutting length can be taken into the system.

<< Conventional technology and its problems >> In this type of cutter / sorter that cuts a long sheet into single sheets, the cutting length data of the long sheet that is actually cut due to various controls in the system is is necessary.

Conventionally, as a method of capturing the cutting length data, a method of capturing the cutting length data from another device or a method of calculating the cutting length data for each cycle of the operation signal of the cutter has been adopted.

In the former case, since a signal is transmitted / received to / from another device that sends out the cut length data, the cost of the system is increased.

The latter has a drawback that the cost of the cut length data obtained for calculation for each cut cycle is poor, although the cost is not required.

In addition, the operator can input the cutting length from the keyboard, but in this case, there is a problem that an input error occurs.

<< Object of the Invention >> The present invention has been proposed in view of the above points, and an object of the present invention is to obtain a cutting length of a cutter / source system in which the obtained cutting length data is highly accurate and does not require other devices. It is to provide a learning device.

<< Structure and Effect of the Invention >> In order to achieve the above object, the present invention provides a cutter pulse generator for generating a pulse synchronized with the operation of a cutter, and a cutter for counting a cutter pulse output from the cutter pulse generator. Pulse counting means, a moving amount pulse generator for generating a pulse proportional to the moving amount of the long sheet member from a specific position set in advance on the cutter supply side to the cutter, and a moving amount pulse generator Movement amount pulse counting means for counting the output movement amount pulses; conversion means for converting the distance from the specific position to the cutter into the number of pulses output from the movement amount pulse generator; In the learning mode, the counting of the cutter pulse counting means is started, and simultaneously with the input of the first cutter pulse, Counting, and the count value of the cutter pulse counting means and the movement amount at the time when the cutter pulse is first input after the count value of the movement amount pulse reaches the number of pulses obtained by the conversion means. Cutting length calculating means for calculating the cutting length of the long sheet based on the count value of the pulse counting means.

As described above, the present invention counts the pulse from the cutter pulse generator and the pulse from the moving amount pulse generator, and counts each of the pulses counted while the long sheet body moves from the substantially specific position to the cutter. Since the cutting length of the long sheet is calculated based on the number of pulses, if the distance to the specific position is sufficiently longer than the cutting length, accurate cutting length data can be obtained.

In addition, in the system, by obtaining an accurate cutting length, the positional relationship between the defective portion detected by the defect inspection unit and the virtual cutting line can be accurately specified before cutting, and the accuracy of the sorting process after cutting is improved. And the like.

<< Description of Embodiment >> FIG. 1 is a schematic configuration diagram of an embodiment of a cutter / sorter system according to the present invention.

In the figure, the roll paper 1 set at the left end passes through the inspection section D and is conveyed rightward by the belt conveyor 2. A marker M is provided in the middle of the belt conveyor 2, and marking for discriminating the number of rolls is performed for each fixed length of roll paper. At the right end of the belt conveyor 2, the roll paper 1 is cut into a cutter C to form a sheet. A high-speed belt conveyor 3 is arranged in front of the cutter C, and the cut sheets are conveyed in a state in which each sheet is separated by the belt conveyor 3. A reject gate G that is rotatably configured is provided on the transport path at the right end of the belt conveyor 3. The reject gate G is always held lower than the transport path, and when the inspection unit D passes a sheet in which a defect is detected, the gate tip is driven to an upper position in the transport path to transport the defective sheet. Forced removal from the road down.
The removed defective wafer is stored in the lower bucket 4.

The sheet that has not passed through the reject gate G and contains no defects is then transferred to the low-speed belt conveyor 5. Here, the sheets are conveyed while being gradually superposed, and are sequentially stacked on a pallet 6 by a fork F installed at the right end.

Note that rotary encoders RE1, 2, and 3 for detecting the conveyor speed are connected to the right end belt pulleys of the belt conveyors 2, 3, and 5, respectively.

FIG. 2 is a block diagram showing an electrical configuration of the embodiment.

In the figure, a control unit 10 is configured by a microcomputer including a CPU 11, a memory 12, counters 13, 14, a CRT 15, and the like. The proximity switch 7 which detects the operation of the cutter C and generates a pulse is connected to the counter 13. The rotary encoder RE1 connected to the belt conveyor 2 is connected to the counter.

The keyboard 9 is provided for setting various parameters, switching modes, and operating the system to the controller 10.

Next, the operation of the embodiment will be described based on the flowchart of FIG. 3 and the dimensional explanatory diagram of FIG.

First, by turning on the power to the control unit 10, the system program of the memory 12 is started to be executed, and after various initial settings and the like are performed, it is confirmed that the maintenance mode is set,
The parameters Ld, Lm, Lg, Lf are input from the keyboard 9 (step 301). The input parameter Ld is the distance from the cutter C to the inspection point of the inspection unit D, Lm is the distance from the cutter C to the marker M, and Lg is the distance from the cutter C to the reject gate G, as shown in FIG. The distance Lf is the distance from the cutter C to the fork F.

Next, the number of pulses Ldp, Lmp, Lgp, L obtained by dividing the input parameters Ld, Lm, Lg, Lf by the distances a, b, c per unit pulse of the corresponding rotary encoders RE1 to RE3.
fp is stored in the memory (step 302).

Next, after setting a roll of the roll paper 1 (step 303), the automatic selection operation and the start push button are turned on (step 304). Here, conveyance and cutting of the long sheet body in the cutter / sorter system are started. After passing through the inspection section D, the set roll paper 1 is conveyed rightward by the belt conveyor 2 and cut by the cutter C into a sheet shape. After the cut sheets are separated one by one by a high-speed belt conveyor 3, the reject gate G
It passes above and is transferred to a low-speed belt conveyor 5. Here, the sheets are conveyed while being superposed gradually, and are sequentially stacked by a fork F installed at the right end.

In this state, the control unit 10 sets the learning mode, monitors the cutting timing of the cutter C with the cutter pulse from the proximity switch 7, and when the cutter pulse is input, the pulse of the rotary encoder RE 1 installed on the belt conveyor 2. Is counted by the counter 14, it is confirmed that the counted value has reached the pulse number Ldp corresponding to the parameter Ld, and the fact is stored (step 305). In the example of FIG. 4, the number of cutter pulses at this time is four.

Subsequently, the pulse counting of the rotary encoder RE1 is continued, and when the next cutter pulse is input, the pulse count value of the counter 14 at that time is divided by the number of cutter pulses counted by the counter 13 so far, and one cut is performed. The number of pulses per length is obtained, and the value is multiplied by the distance a per unit pulse to calculate one cutting length (P1) (step 306). In the example of FIG. 4, the number of cutter pulses at this time is five.

Further obtained cutting length P1, parameter Ld, parameter
Based on Ld 'and the like, a fraction distance αd closest to the detection unit D to the virtual cutting line than the cutter C, and a fraction distance αm closest to the marker M to the virtual cutting line from the cutter C are obtained ( Step 307).

When the above learning process is completed, the cutter / sorter system is switched to the inspection mode, and the detection of the defect of the detection unit D is started. When a defect such as a hole, dust adhesion, or dirt is optically detected from the paper surface, the position of the defect is stored in synchronization with the movement of the paper. After the portion including the defect is cut by the cutter C, the reject gate G is driven at an optimal timing so that the sheet including the defect is removed from the transport line.

These post-inspection processes are performed accurately based on the high-precision cutting length obtained by learning, and as a result, it is possible to improve the yield in removing defective sheets as compared with the related art. .

In the above-described embodiment, the range from the reference length cutter C for obtaining the cutting length to the inspection unit D is used. However, an arbitrary position longer than the inspection unit D can be used as the reference. The longer the reference length is, the higher the accuracy of the obtained cutting length is.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of a cutter / sorter system according to the present invention, FIG. 2 is a block diagram showing an electrical configuration of the embodiment, FIG.
FIG. 4 is an explanatory diagram of dimensions. 2 ... belt conveyor 3 ... belt conveyor 5 ... belt conveyor 7 ... proximity switch 9 ... keyboard 10 ... control unit 11 ... CPU 12 ... memory 13, 14 ... counter 15 ... CRT C ... Cutter D ... Inspection unit G ... Reject gate M ... Marker RE1,2,3 ... Rotary encoder

Claims (1)

(57) [Claims] A cutter pulse generator for generating a pulse synchronized with the operation of the cutter; a cutter pulse counting means for counting a cutter pulse output from the cutter pulse generator; and a cutter pulse generator set in advance on the cutter supply side. A displacement pulse generator for generating a pulse proportional to the displacement of the long sheet from a specific position to a cutter, and a displacement pulse counting means for counting the displacement pulses output from the displacement pulse generator Converting means for converting the distance from the specific position to the cutter into the number of pulses output from the moving amount pulse generator; and starting counting of the cutter pulse counting means in a learning mode prior to system operation. Simultaneously with the input of the first cutter pulse, the counting of the moving amount pulse counting means is started, and the counted value of the moving amount pulse is First, based on the count value of the count value and the amount of movement pulse counting means of the cutter pulse counting means at the time the cutter pulse is input after reaching the number of pulses obtained by the serial conversion means,
A cutting length calculating device for calculating a cutting length of a long sheet body, and a cutting length learning device for a cutter / sorter system.