JPH0710457B2 - Work piece cutting device - Google Patents

Description

Description: [Industrial field of use] The present invention relates to an apparatus for cutting a workpiece while running.

[Problems to be Solved by the Prior Art and Invention] Generally, the slatting material for building shutters, steel members, etc. are manufactured by roll forming, but especially in the case of shutters, the openings of the building Depending on the size, the size and number of workpieces often change during roll forming, for example, A size is 60, B size is 50, and C size is 70. is there.

However, conventionally, to set the cutting dimension of this work,
As shown in FIG. 3, the workpiece abutting stopper 54 and the die-set start switch 55, which were installed on the table 53, were manually set. Moreover, the cutting machine 50
In response to a command from the start switch 55, the die set 51 of the
Cut command switch while running with the work by extension of 52
The cutting operation was performed in response to the instruction from 56, the die set 51 was restored by the restoration of the cylinder 52 based on the instruction from the return switch 57, and this operation was repeated. A turnover switch 58 in the drawing is a command switch for horizontally sweeping the cut work and transferring it to the next process, and 59 is a screw shaft.

Due to this structure, it is practically difficult to improve the dimensional accuracy due to the slip and the slip inside the die set 51, the synchronous tracking accuracy of the cylinder 52, etc. during the forming of the workpiece. After finishing the series of cutting as described above, the molding line had to be stopped once in order to perform the next dimension setting. Moreover, the line down time for this dimension change is 17 to 18 of the net operating time.
%, And the operating rate was extremely poor. Further, it is necessary to adjust the position while performing the test cutting of two or three pieces and confirming the dimensions, and the material yield is not satisfactory.

Therefore, as disclosed in Japanese Patent Laid-Open No. 61-44524, there has been proposed a running cutting machine in which the cutting machine performs cutting while traveling while following the conveyance of the work. The machine traveling speed is preset to be the same as the workpiece conveying speed, and when the traveling speed of the cutting machine differs from the workpiece conveying speed due to wear of parts, etc., the workpiece conveying and cutting can be performed. Is to stop. However, mechanical devices such as workpiece processing machines
If the machine is cold and not sufficiently lubricated, and if it is operated by pressure oil, the operating speed tends to be slow because the operating oil itself is also cold. It is necessary to take measures such as performing the start-up operation for a while so that there is a problem that the work efficiency decreases, and further, when the work traveling speed changes due to wear of mechanical parts, etc. However, if the work is stopped and the speed is adjusted one by one, there is a problem that the workability is significantly inferior, and it cannot be adopted as it is.

[Means for Solving the Problem] The present invention has been devised with the object of providing a device for cutting the running distance of a work which can eliminate these drawbacks in view of the above circumstances, and the device is continuously fed out. In a work traveling cutting device having a traveling processing unit equipped with a cutting machine for cutting a traveling running workpiece, a motor for running the cutting machine is a motor whose rotation speed is freely controllable. On the other hand, the control unit for controlling the traveling of the cutting machine is assumed to be connected to a detection unit for detecting the traveling speed of the work and an input unit for inputting the work cutting condition,
Then, the control unit calculates the rotational speed of the cutting machine traveling motor so as to correspond to the work traveling speed detected by the detection unit, the calculated value and the input set value from the input unit. When the set cutting dimension of the workpiece is reached, the cutting machine is started so that the calculated motor rotation speed is reached, and when the set cutting dimension is reached, the cutting operation command is output. And means are provided.

Further, according to the present invention, even if the work transfer speed changes, the work can be cut while the work is running without stopping the molding line.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. In the drawing, reference numerals 1, 2, 3 and 4 respectively represent a roll forming machine forming a forming line for a work W, a detection unit for detecting the traveling speed of the work, a control unit for controlling the running cut, and the work after cutting the running. In the traveling processing section for cutting W, for example, a strip-shaped material wound around an uncoiler (not shown) is molded by the roll forming machine 1 equipped with a plurality of upper and lower forming rollers 11 to form a work. W, and the work W is continuously fed to the traveling processing unit 4 side via a detection unit (corresponding to detection unit of the present invention) 2 that detects the traveling speed of the work W. As will be described later, the running cutting control of the traveling processing unit 4 is performed based on the control command from the control unit 3.

The detection unit 2 is composed of a sensor unit 21 and an actuating body 22, and the upper surface of the actuating body 22 is set at a substantially path height position of the work W, and the sensor unit 21 is vertically movable with respect to the actuating body 22. Therefore, the workpiece W is sandwiched between the sensor portion 21 and the operating body 22. The sensor unit 21 has two length measuring sensors 2
3, 24 and rollers 29 for pressing the work W downward are provided. Further, an endless belt 25, which is in contact with the lower surface of the work W and is transferred in synchronization with the work W, is stretched between rotatable shafts 26, 27 and 28 on the operating body 22.
26 and 27 are pressed to the work W side by a bullet or the like so that the work W and the belt 25 do not slip. Further, the width of the belt 25 is formed wider than the width of the work W, and the tape 25 (or mark) of a special material such as a linear or dot-shaped magnetic material or light reflecting material is formed on the edge of the belt 25. Is attached, and the sensors 23 and 24 detect the traveling speed of the work W by reading the tape X.

The traveling processing unit 4 is configured to include an input means 4a, a traveling means 4b, and a cutting machine 4c. The traveling means 4b is
The cutting machine 4c is reciprocally moved along the molding line based on forward and reverse driving of the motor 42 with the brake clutch 42a.The motor 42 is horizontally mounted above the machine frame 41 installed on the floor surface. Has been. And this motor 42
For example, a hydraulic servomotor or the like is used in which the hydraulic pressure supply amount is changed by adjusting and controlling the valve opening amount at the inlet / outlet of the hydraulic pressure path, and thereby the motor rotation speed can be freely converted and controlled. The output from the motor 42 is transmitted to the screw rod 43 via the speed reduction mechanism 42b, and the slide cylinder 43a screwed to the screw rod 43 is slidably moved forward and backward by the forward and reverse rotation of the screw rod 43. It is designed to do Reference numeral 44 is an auxiliary cylinder that assists the reciprocating movement of the base 46 integrally provided on the cylindrical body 43a, and 45 is a dovetail-shaped guide, which guide 45 guides the slide transfer of the base 46. It is a thing.

On the other hand, the base 46 is provided with an engagement piece 46a that slides into the guide 45, and a bracket 46b for fixing to the cylindrical body 43a, and a cutting machine 4c is provided on the upper surface of the base 46. It is installed integrally. A die set 47 having upper and lower dies 47a and 47b is attached to the center of the cutting machine 4c, a hydraulic cylinder 48 is attached to the top, and a hydraulic cylinder
A punch 48a is provided at the tip of 48, and when the workpiece W reaches a predetermined size, the hydraulic cylinder 48 extends as described later, whereby the die set 47 punches 48a.
It will be hit by a and move down to cut the work W,
Then, the operated die set 47 is returned upward by the urging force of the ammunition 47c at the four corners. In the figure, 6 is a table on which the work W travels.

Next, the procedure of the running disconnection control by the control unit 3 will be described. First, the control unit 3 detects the work W and the detection unit 2.
Digital numeric keypad switch 31 (corresponding to the input means of the present invention) for inputting workpiece cutting conditions such as dimensions and number of workpieces
It is connected to and, and the data from the detection unit 2 and the ten-key switch 31 is input. The control unit 3 includes a calculation unit 33 for calculating the rotation speed of the motor 42 corresponding to the traveling speed of the work W detected by the detection unit 2, a calculation value calculated by the calculation unit 33, and a numeric keypad. By comparing the input setting value input in advance by the switch 31 with the setting value, and when the set cutting dimension of the work W is reached, the calculated motor rotation speed is set to, for example, 15 cm.
A judgment means 32 is provided which starts the motor 42 at a time before this, and outputs a cutting command when the traveling speed of the cutting machine 4c is synchronized with the traveling speed of the work W in correspondence with the motor rotation speed and the traveling speed of the work. Then, the command from the determination means 32 is input to the input means 4a provided in the traveling processing unit 4 via the output means 34, and the motor 42 is driven based on this,
The work W is cut.

In the embodiment of the present invention configured as described above, the sensors 23 and 24 of the detection unit 2 detect the traveling speed of the work W when cutting the work W continuously fed out during the running, and The traveling cutting control of the cutting machine 4c is performed based on the input set value from the ten-key switch 31, and in this case, the motor 42 for traveling the cutting machine 4c is controlled by the control unit 3
In response to the command from the cutting machine, the cutting machine starts at a point before the workpiece cutting dimension position, and when the workpiece cutting dimension is reached, the rotation speed corresponds to the traveling speed of the workpiece W.
4c cuts the work W while traveling in synchronization with the work W. As a result, even if the traveling speed of the work W is changed, the cutting machine 4c is controlled so as to have a speed corresponding to the changed traveling speed of the work W, and disconnects during the running. Therefore, there is no trouble of stopping the work and adjusting the rotation speed of the motor to the traveling speed of the work, and the workability can be remarkably improved.

[Advantageous effects] In short, since the present invention is configured as described above, the traveling speed of the work is detected when cutting the continuously delivered work between the running times, and based on the detected running speed. In this case, the motor for running the cutting machine starts at a time shorter than the work cutting dimension, and when the work cutting dimension is reached, the traveling speed of the work is reached. Is controlled by a command from the control unit so that the number of revolutions corresponds to, and the work is cut by the cutting machine. As a result, even if there is a change in the traveling speed of the work, the cutting machine always cuts while running while being controlled so that the speed corresponds to the changed traveling speed of the work. There is no trouble of stopping and adjusting the rotation speed of the motor to the traveling speed of the work, and the workability can be remarkably improved.

[Brief description of drawings]

FIG. 1 shows an embodiment of a work running cutting apparatus according to the present invention. FIG. 1 is a schematic side view of a main part of a processing line, FIG. 2 is a block circuit diagram, and FIG. It is a processing line side view. In the figure, 1 is a roll forming machine, 2 is a detection unit, 23 and 24 are sensors, 25 is a belt, 3 is a control unit, 32 is a judgment unit, 33 is a calculation unit, 34 is an output unit, 4 is a traveling processing unit, 4a is an input means,
4b is a traveling means, 4c is a cutting machine, 6 is a table, and W is a work.

Claims (1)

[Claims] 1. A work cutting apparatus for cutting a work, which is continuously fed and running, for cutting the work while running, wherein a motor for running the cutting machine comprises: It is assumed that the control unit for controlling the traveling of the cutting machine is connected to the detection means for detecting the traveling speed of the motor and the input means for inputting the work cutting conditions while the motor is controlled freely by the rotation speed. Then, the control unit calculates the rotation speed of the cutting machine traveling motor so as to correspond to the work traveling speed detected by the detection unit, and the calculated calculation value and the input setting from the input unit. The value is compared and judged, and when the set cutting dimension of the work is reached, the cutting machine is started so that the calculated motor rotation speed is reached, and when the set cutting dimension is reached, a cutting operation command is output. Judgment An inter-running cutting device of a work, characterized in that the stage is provided.