JPH05138593A - Roll-like long length material - Google Patents

Abstract

PURPOSE:To surely prevent damage caused by a rotary blade making contact with a support rod by converting the distance between a position detected by a position sensor and the outer diameter position of the support rod into a number of pulses, and by setting the forward end position of the rotary blade in accordance with thus converted pulse number so as to control the rotary blade. CONSTITUTION:A long-length material A in which a sheet-like material is wound in a roll-like manner onto a spool is supported rotatably on a support rod 4, and a rotary blade 11 is provided so as to be movable by a motor 14c in a direction orthogonal to the support rod 4. A position detecting sensor 17 detects the position of the rotary blade 11, relative to the support rod 4, and then the distance between the detected position and the outer diameter position of the support rod 4 is converted in a number of pulses so as to set the forward end position. Further, a pulse number which is obtained by subtracting an actual pulse number obtained when retracting from the front end position to a retracted position X, from thus converted pulse number is stored in a memory, and when the pulse number during movement of the rotary blade 11 from the retracted position X to the forward end position comes to the converted pulse number, a motor stopping position is delivered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for cutting a roll-shaped long object, more specifically, a long object formed by winding a sheet-shaped material such as a woven cloth or a resin sheet into a roll shape and cutting it into a predetermined width Cutting device.

[0002]

2. Description of the Related Art Conventionally, as shown in Japanese Utility Model Laid-Open No. Sho 63-179089, a cutting device for cutting a long object into a predetermined width has a chuck and a driving device for driving the chuck. , A horizontal support rod, the long rod is inserted into the outer periphery of the support rod and rotatably supported, and one end of the long rod is held by the chuck to drive the drive unit. By means of which the long object is rotatably driven, the machine base supports a movable base that is movable in the axial direction of the support rod.
An axial feed mechanism equipped with a first motor is provided between the moving table and the machine table, and a tool table that can move forward and backward in a radial direction orthogonal to the axial direction of the support rod is supported on the moving table. Then, a radial feed mechanism equipped with a third motor is provided between the tool rest and the moving stand, and the tool rest is provided with a rotary blade for cutting the long object at predetermined widths and the rotary blade. A second motor for driving the rotary blade, the rotary device rotationally drives the long object, the second motor rotationally drives the rotary blade, and further drives the third motor of the radial feed mechanism. To move the tool post forward in the radial direction of the support rod, the rotary blade supported by the tool post reaches the forward end position corresponding to the outer diameter position of the support rod, and the long object is cut. When completed, rotate the third motor in reverse,
After moving the tool rest backward, after moving the rotary blade to the retracted position corresponding to the outer diameter position of the long object,
By driving the first motor to laterally move the movable table in the axial direction of the support rod by a predetermined length, and again moving the tool rest in the retracted position forward in the radial direction, the long object is predetermined. It is configured to cut into width. Then, in the above configuration, the setting of the forward end position of the rotary blade, while providing a hit on the forward side forward end of the tool rest in the movable table, to the tool rest, the rotary blade is moved forward. When it reaches the forward end position, it comes into contact with the hit and performs 0N operation, and a reverse limit switch for detecting the forward end position of the rotary blade is provided. Based on the detection result of the reverse limit switch, the radial feed The third motor of the mechanism is reversely rotated and the tool rest is moved backward to prevent the rotary blade from coming into contact with the support rod and damaging the cutting edge.

[0003]

However, in the conventional structure having the above-mentioned construction, the forward end position of the rotary blade is moved by bringing the retraction limit switch into contact with the contact and performing 0N operation each time the cutting is completed. Since it is set so that if the hit and limit switches are not correctly attached to the proper positions, the forward end position will be misaligned, but the work to correctly attach these hit and limit switches to the proper positions is Hard to do, and therefore
If the mounting position is incorrect, the rotary blade comes into contact with the support rod and the blade edge is damaged. Therefore, a conductive rubber is attached to the support rod and the rotary blade comes into contact with the conductive rubber. Since a double safety device for making an emergency stop by energizing at that time is essential, as a result, there is a problem that the entire device becomes complicated, and moreover, the limit switch operates every time the disconnection is completed, so that the switch fails. There is a problem that it is apt to occur and the durability is poor.

The present invention has been made in view of the above points.
The purpose is to be able to easily and accurately set the forward end position of the rotary blade, improve the durability, and improve the safety as compared with the conventional example without providing a double safety device. There is a point to.

[0005]

SUMMARY OF THE INVENTION In the present invention, therefore, a support rod 4 for winding a sheet-like material around a winding tube B in a roll shape and supporting a long object A to be driven and rotated, and the supporting rod 4. A roll-shaped long strip that can be moved forward and backward in a direction orthogonal to the length direction of the rod 4 and that includes a rotary blade 11 that cuts the long object A at a predetermined width and a motor 14c that moves the rotary blade 11 forward and backward. A device for cutting an object, comprising a position detection sensor 16 for detecting a position of the rotary blade 11 with respect to the support rod 4, and the motor 14.
The support rod is provided with an encoder 15 that outputs a pulse corresponding to the rotation of c and a retreat position setting unit that sets a retreat position X after the cutting operation of the rotary blade 11, and from the detection position of the position detection sensor 16 to the support rod. Reference pulse number setting means for converting the distance to the outer diameter position of 4 into the number of pulses to set the forward end position, the converted pulse number for conversion by the reference pulse number setting means, and the forward end position to the backward position A memory (RAM) that stores a subtracted pulse number obtained by subtracting the measured pulse number that is measured by counting the pulse number when moving to X from the converted pulse number, and the rotary blade 11 from the retracted position X to the forward end position. When the number of pulses when moving to 0 reaches the converted number of pulses, the motor 1
4c is provided with a controller 17 having an output unit 0 that outputs at least one of a stop signal and a backward signal.

[0006]

The distance from the position detected by the position detection sensor 17 to the outer diameter position of the support rod 4 can be converted into the number of pulses output from the encoder 15, and the forward end position 0 can be set by the converted number of pulses. Moreover, the subtraction pulse number between the measured pulse number and the converted pulse number when moving from the forward end position 0 to the backward position X of the rotary blade 11 is set, and the rotary blade 11 moves from the backward position X to the forward end position. By comparing the pulse number when moving to 0 and the converted pulse number in consideration of the subtraction pulse number, the forward end position 0 when advancing the rotary blade 11 from the backward position X can also be set. Therefore, it is possible to eliminate the troublesome work of accurately attaching the hit and limit switches to the proper positions as in the conventional example, and regardless of the attachment position of the position detection sensor 17, the attachment position and the outside of the support rod 4 are removed. Since the distance from the radial position is converted to the number of pulses and the position is set based on this number of converted pulses, the forward end position 0 can be set easily and accurately, and the number of converted pulses is set in advance. Since the stop or the backward movement of the rotary blade 11 is controlled based on the above, the durability can be increased as compared with the conventional example, and even if the double safety device is not provided, compared with the conventional example, The safety can be improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIGS. 1 and 2, reference numeral 1 designates a horizontally long machine base. A chuck 2 for holding the scale A and a drive device 3 for rotationally driving the chuck 2 are provided, and the machine base 1 passes through the center of the chuck 2 from the back side of the chuck 2 A horizontal support bar 4 extending to the end side is attached, the long object A is inserted into the outer circumference of the support bar 4 and rotatably supported, and one end of the long object A is held by the chuck 2. Then, the long object A is rotationally driven by the driving device 3.

Further, as shown in FIG. 3, the support rod 4 has one radial side surface facing a rotary blade, which will be described later, and the support rod 4 has
It is formed into a D-shaped cross section by recessing it to the center side with respect to the outer diameter of, and prevents the rotary blade from coming into contact with the support rod when the rotary blade described later moves to the outer diameter position of the support rod. ing.

Further, on the machine base 1, a movable base 5 which is movable in the axial direction of the support rod 4 is movably supported along a pair of rails 6, and the movable base 5 and the machine base 1 are supported. And an axial feed mechanism 7 for moving the movable table 5 in the axial direction of the support rod 4.

The axial feed mechanism 7 is provided with a ball screw 71 provided on the machine base 1 and a nut body 72 screwed on the ball screw 71 and provided on the movable table 1, a transmission wheel and a transmission band. First motor 7 for rotating the ball screw 71
3 and is configured to move the moving table 5 provided with the nut body 72 by the rotational driving of the ball screw 71 with respect to the machine base 1, while at the end of the ball screw 71, the first A first encoder 8 that outputs a pulse signal corresponding to the rotation of the motor 73 is provided.

A turret 9 which can move forward and backward in a lateral direction orthogonal to the axial direction of the support rod 4 is movably supported on the movable table 5 along a pair of rails 10. 9
In addition to supporting a rotary blade 11 for cutting the long object A in predetermined widths and a second motor 12 for driving the rotary blade 11, a portion of the rotary blade 11 facing the support rod 4 is excluded. While a cover 13 for covering the other outer peripheral portion is provided, a radial feed mechanism 14 for moving the tool rest 9 in the radial direction of the support rod 4 is provided between the tool rest 9 and the moving base 5. The rotary blade 11 is moved in a direction facing the recess 4a of the support rod 4.

The radial feed mechanism 14 includes the movable table 5
Is formed by a ball screw 14a provided on the turret, a nut body 14b screwed on the ball screw 14a and provided on the tool rest 9, and a third motor 14c rotatably driving the ball screw 14a via a transmission wheel and a transmission band. , The ball screw 14
The tool base 9 provided with the nut body 14b is moved in the front-back direction with respect to the movable table 5 by the rotational drive of a, that is, between the original position and the outer diameter position of the support rod 4, while the ball A second encoder 15 that outputs a pulse signal corresponding to the rotation of the third motor 14c is provided near the end of the screw 14a. In addition, the third motor 14
c is provided with an inverter controller for adjusting the power supply frequency of the motor 14c, and by adjusting the frequency, it is possible to adjust from high speed to low speed. The inverter controller outputs the output of a photoelectric sensor 16 described later. The long object A controlled by the photoelectric sensor 16 from the original position
Up to the outer diameter position, that is, until the photoelectric sensor 16 operates, after the photoelectric sensor 16 operates,
During cutting work to reach the outer diameter position of the support rod 4,
Drive at a low speed.

At the upper position of the cover 13 covering the rotary blade 11, the rotary blade 11 is forwardly moved in the forward movement direction to the elongated object A. A photoelectric sensor 16 for detecting the outer diameter position of the long object A by irradiating the object A in the tangential direction is provided.
The retreat position X with respect to the long object A during the cutting operation of the rotary blade 11 is set based on the detection result of 6.

The photoelectric sensor 16 includes a light projector 16a for irradiating light in the tangential direction of the long object A, and the light projector 16a.
a light receiver 16b for inputting the light emitted from a. The light projector 16a and the light receiver 16b are attached to the cover 13, and the movable table 5 and the light projector 1 are attached.
The light receiver 16 of the light is provided with a reflection plate 16c for reflecting the light emitted from 6a and inputting it to the light receiver 16b.
The photoelectric sensor 16 outputs a detection signal by inputting to b, and the retreat position X is set based on the detection result from the photoelectric sensor 16, and the retreat position X is set as follows. This is performed based on the actually measured pulse number obtained by counting the pulse signal output from the second encoder 15 according to the distance from the forward end position of the rotary blade 11 to be retracted to the time when the photoelectric sensor 16 outputs, which will be described later.

On the other hand, a position detection for detecting the position of the rotary blade 11 with respect to the support rod 4 by irradiating the position near the chuck 2 on the machine base 1 from the chuck side of the support rod 4 toward the other end. A sensor 17 is provided and a controller 18 described later is attached to the machine base 1.

The position detecting sensor 17 includes the tool post 9
It is provided at a predetermined position within the forward / backward movement range of, and the pulse number counting start position output from the second encoder 15 is set, and it is predetermined based on the distance between the position detection sensor 17 and the outer diameter position of the support rod 4. By the converted pulse number described later, the forward end position of the rotary blade 11, that is, the support rod 4
The cutting completion position is set at the outer diameter position of the above. In the embodiment, a transmission type photoelectric sensor including a light projector 17a for irradiating light and a light receiver 17b for inputting light emitted from the light projector 17a is mainly used. The light projector 17a is attached to the machine base 1 in the vicinity of the chuck, and the light receiver 17b is attached to the end of the machine base 1 on the side opposite to the chuck so that the light from the light projector 17a is received by the light receiver 17a.
As shown in FIG. 2, the irradiation is performed in an inclined manner toward b, and the position of the cutting edge of the rotary blade 11 that moves along with the forward movement of the tool rest 9 near the chuck 2 is detected. I am trying.

That is, the position detecting sensor 17 is located at a predetermined position in the forward / backward moving range of the tool rest 9 away from the retracted position X with respect to the elongated object A, that is, the elongated object A.
Even if the outer diameters of the support rods 4 are different from each other, they are provided at predetermined positions separated by a distance that can be dealt with. Since it is determined by the position, that is, the detection position provided near the chuck, the number of pulses of the second encoder 15 corresponding to this fixed distance can also be determined by converting it into the number of pulses for the distance.
When a detection signal is output from the position detection sensor 17, the counting of the pulse signal output from the second encoder 15 is started to advance the tool post 9 based on the converted pulse number corresponding to the distance. The end position, that is, the cutting end position where the rotary blade 11 reaches the outer diameter position of the support rod 4 can be set.

The retracted position X set by the photoelectric sensor 16 is a position closer to the support rod 4 than the detection position of the position detection sensor 17, that is, the outer diameter position of the elongated object A. After the tool rest 9 reaches the forward end position set based on the converted pulse number, and then moves backward from this forward end position to the backward position X, the number of pulse signals output from the second encoder 15 is counted and measured. By controlling the output from the controller 18, which will be described later, based on the number of pulses, the forward end position of the tool rest 9 when moving forward from the backward position X can also be set.

Further, in the embodiment shown in the drawing, the moving table 5 has a contact 1 at the front end of the rotary blade 11 in the forward direction.
9 is provided, and when the rotary blade 11 reaches the forward end position on the tool rest 9 and the controller 18 described later does not control the third motor 14c, the third motor 14c Further, a safety switch 20 such as a proximity switch for outputting at least one of a stop signal and a backward signal is provided. This safety switch 20
Is not particularly necessary, but it is possible to secure further safety by providing it.

Further, on the chuck side of the machine base 1, a lateral movement amount of the movable table 5 in the chuck direction, that is, a work completion position at which cutting of the long object A for each predetermined width is completed is set. 21 is provided and the movable table 5 is provided with
A first limit switch 22 for detecting the work completion position by abutting against the hit 21 is operated, and a cutting work start position of the movable table 5 is set on the side opposite to the chuck of the machine base 1. The contact 23 is provided, and the moving table 5 is provided with a proximity switch 24 that comes into contact with the contact 23 and operates 0N.

Further, the rotary blade 1 on the movable table 5
1 forward start position, that is, 2 in the original position of the tool post 9
Second limit switch 26 for stopping the rotation of the third motor 14c by providing the tool rest 5 with the tool rest 9 and contacting the contact 25 when the tool rest 9 moves to the original position.
Is provided.

The drive control of the movable table 5 and the tool post 9 configured as described above is based on the outer diameter position information of the long object A from the photoelectric sensor 16 and the detection result of the position detection sensor 17. To output a command from the controller 18 based on the pulse number information from the second encoder 15 when the tool rest 9 moves forward and the pulse number information from the second encoder 15 when the tool rest 9 moves backward. It is based on this.

That is, the input unit 18 of the controller 18
In a, the photoelectric sensor 16, the position detection sensor 17, the first and second encoders 8 and 15, and the safety switch 20 are shown.
And the first and second limit switches 22 and 26, the proximity switch 24, and the input device 3 for setting the lateral movement amount of the rotary blade 9.
0, and the output unit 18c is connected to the third motor 14c, the first motor 73, and an inverter controller (not shown) of the third motor 14c. In addition, the controller 18 includes a calculation processing unit (CP
U) and a memory (RAM), the arithmetic processing unit (C
PU) is provided with a reference pulse number setting means 18b for setting the forward end position 0 of the tool post 9 by converting the fixed distance into a pulse number with respect to the distance output from the second encoder 15, and the memory. (RAM)
Stores the converted pulse number corresponding to the distance set by the reference pulse number setting means 18b and corresponds to the outer diameter position of the long object A set by the photoelectric sensor 16 from the forward end position 0. When retreating to the retreat position X set by setting the measured pulse number output from the second encoder 15 and the measured pulse number,
The subtracted pulse number subtracted from the converted pulse number is stored.

That is, the retracted position X is located at the set position of the position detection sensor 17, that is, a position closer to the support rod 4 than the detected position, as described above.
Since the cutting is started from, the number of pulses when returning from the forward end position 0 to the backward position X is counted in order to correct the difference in distance between the detection position and the backward position X,
The subtracted pulse number subtracted from the converted pulse number is stored in a memory (RAM), and when the cutting work from the retracted position X is started, the subtracted pulse number is read from the memory (RAM) and the subtracted pulse number is measured pulse. It is possible to set the forward end position 0 from the retreat position X by adding it to the number and comparing the added value with the converted pulse number.

The comparison between the added value and the converted pulse number is performed by the arithmetic processing unit (CPU), and the comparison is made by the addition method, and when the added value reaches the converted pulse number, The reverse command is output to the third motor 14c. Further, although the retreat position X may be set based on the output of the photoelectric sensor 16, the converted pulse number and the subtracted pulse number are stored in the memory (RA.
Since it is stored in M), it can be performed by comparing the converted pulse number at the forward end position 0 with a subtraction method. In this case, the subtraction pulse number is subtracted from the converted pulse number to start, and when the result of the subtraction becomes zero, the retreat position X is reached. The stop command is output to the three-motor 14c, and the lateral movement command described below is output.

Further, the lateral movement of the tool rest 9 by the moving table 5 is performed by previously determining the lateral movement amount by the input device 30 according to the cutting width, and the first encoder corresponding to this lateral movement amount. The number of pulses of 8 is calculated by the arithmetic processing unit (CPU).
The horizontal movement reference pulse number is set by the horizontal movement reference pulse number setting means 18d and the lateral movement reference pulse number is also stored in the memory (RA
M), the tool post 5 is set to the retracted position X.
Is reached and a lateral movement command is output, and the first motor 73
When driving, the pulse signal output from the first encoder 8 is counted, the lateral movement reference pulse number is read from the memory (RAM), and the actually measured pulse number and the lateral movement reference pulse number are calculated by the arithmetic processing unit ( CPU), and when the horizontal movement reference pulse number is reached, the output unit 18c outputs a command to stop the first motor 73.

The outer diameter position of the support rod 4 is the outer diameter position of the portion excluding the recessed portion 4a and the recessed portion 4a.
It may be the outer diameter position of the included portion.

Next, the operation of the cutting device configured as described above will be described.

The long object A is inserted and supported on the outer periphery of the support rod 4, one end of the long object A is held by the chuck 2, and the tool rest 9 is moved forward at high speed from the original position. When the rotary blade 11 supported by 9 moves forward from the original position and the photoelectric sensor 16 operates 0FF, the third motor 14c is decelerated to the cutting speed.

After the photoelectric sensor 16 operates 0FF, the addition value of the actually measured pulse number output from the second encoder 15 and the subtracted pulse number and the converted pulse number are calculated by the arithmetic processing unit (CPU). When the added value is compared and becomes the converted pulse number (FIG. 5A), the rotary blade 11 supported by the tool rest 9 reaches the forward end position 0, and the long object is reached at the forward end position. Since the cutting of A is completed, when the advance end position is reached, the output unit 18c issues a reverse rotation command to the third motor 14c, and the rotary blade 11 moves backward from the advance end position 0. It is allowed (Fig. 5B). Therefore, the rotary blade 11 can be reliably retracted from the set position of the outer diameter position thereof without overshooting the support rod 4, and the distance until the rotary blade 11 moves to the forward end position is determined in advance by the number of pulses. Since the forward end position 0 is set by converting to, the forward end position can be accurately and easily set regardless of the mounting position of the position detection sensor 17. Since it does not use a limit switch, it has excellent durability, and because it stops or retracts at the forward end position based on the number of pulses, it uses a double safety device compared to the conventional example using a limit switch. Even without it, the safety can be improved.

The backward movement of the rotary blade 11 is detected by the photoelectric sensor 16 when the subtraction result of the actually measured pulse number output from the second encoder 15 from the subtracted pulse number becomes zero. Since the outer diameter position of the object A is reached, when the retreat position X corresponding to the outer diameter position is reached, a reverse rotation drive stop command is output from the output unit 18c to the third motor 14c, The rotary blade 11 is stopped at the retracted position X. Therefore, even if the outer diameter of the long object A is different, the photoelectric sensor 1
The retracted position is set on the basis of the detection result of the outer diameter position by 6, and is stopped at this retracted position, so that the stroke amount can be adjusted accurately.

Further, after stopping at the retreat position X as described above, a drive command is issued to the first motor 73 of the axial feed mechanism 7, and the lateral movement reference pulse number stored in the memory (RAM) and The movable table 5 is rotationally driven by the same number of pulses to move the movable table 5 in the axial direction of the support rod 4 by a predetermined length (FIG. 5C). Then, after the rotary blade 11 is laterally fed in the longitudinal direction of the support rod 4 for a predetermined distance, the third motor 14c is rotated again at the laterally fed position, and the next cutting operation is executed (Fig. 5). In the next cutting operation, the subtraction pulse number is read from the memory (RAM) as in the first cutting operation described above, and the subtraction pulse number is actually measured by counting the pulse signals output from the second encoder 15. When the added value is added to the pulse number and the added value reaches the converted pulse number by comparison of the added value and the converted pulse number in the arithmetic processing unit (CPU), the output unit 18
A backward command is output from c to the third motor 14c.
Therefore, the forward movement of the rotary blade 11 is stopped at the forward movement end position 0 set by the converted pulse number, the cutting of the long object A is finished, and by the backward movement signal output after the cutting, The third motor 14c is switched to the reverse rotation, and the tool rest 9 supporting the rotary blade 11 moves backward, and at the time of the backward movement, the same control is performed as described above.
The rotary blade 11 stops at the retracted position X, and the cutting operation is repeated in the above-described process thereafter.

On the other hand, when the rotary blade 11 approaches the chuck 2 and reaches the cutting work position as a result of cutting the long object A into predetermined widths, the first member provided on the movable table 5 is moved.
The limit switch 22 comes into contact with the contact 21 to perform 0N operation, and the 0N operation of the first limit switch 22 causes the third motor 14c to rotate in the reverse direction until the tool rest 9 moves backward to the original position. This backward movement to the original position (FIG. 5E) continues until the second limit switch 26 contacts the contact 25, and the 0N operation of the second limit switch 26 stops the rotation of the third motor 14c. The turret 9 returns to the original position.

After the above cutting work is completed, the amount of wear of the rotary blade 11 is checked by driving the third motor 14c at this cutting work completion position.
The amount of wear can be corrected.

That is, when the third motor 14c is driven while the tool rest 9 is returned to the original position, the tool rest 9 returned to the original position is moved forward toward the forward end position (FIG. 5). F) The position detecting sensor 17 detects the position of the cutting edge of the rotary blade 11. At this time, in the next cutting operation, the outer diameter of the long object A is checked each time according to the long object, so that the memory (RAM) of the controller 18 is used.
The amount of wear can be corrected by resetting the previous subtraction pulse number stored in. That is, as shown in FIG. 6, while the rotary blade 11 supported on the tool rest 9 moves from the original position to the detection position of the position detection sensor 17, if the blade edge is not worn, the rotation from the original position to the detection position occurs. while the distance to the blade center is H, if the cutting edge is worn, the distance from the original position to the rotary blade center at the detection position becomes H _1, than the distance H ₁ is the distance H The distance ΔH corresponding to the amount of wear increases, and the position detection sensor 1
Based on the conversion pulse number converted corresponding to the fixed distance from the detection position by 7 to the outer diameter position of the support rod 4, the advance end position 0 is preset and the rotary blade 11 is advanced. Therefore, the wear amount of the cutting edge can be automatically corrected.

When the cutting operation is newly started after automatically correcting the wear amount as described above, after the third motor 14c is driven to return the tool rest 9 to the original position once, The first motor 73 is driven to return the movable table 5 to the work start position on the opposite side of the chuck 2,
As in the case described above, the cutting operation can be performed as described above by driving the third motor 14c to move the tool rest 9 forward from the original position toward the forward end position 0.

In the embodiment described above, the subtracted pulse number obtained by subtracting the converted pulse number and the actually measured pulse number from the converted pulse number is stored in the memory (RAM), and the subtracted pulse number is stored in the rotary blade. 11 is added to the pulse number when moving from the reverse position X to the forward end position 0, and when the added value reaches the converted pulse number, at least one of a stop signal and a reverse signal is output to the motor 14c. However, in addition, after the second cutting, the converted pulse number is replaced with the actually measured pulse number, and the actually measured pulse number is stored in a memory (RAM). When the measured pulse number when 11 moves from the retreat position X to the forward end position 0 reaches the pre-stored reference pulse number, the stop and retreat signal is sent to the motor 14c. It may be output at least one.

Further, the photoelectric sensor 16 is used as the retreat position setting means for setting the retreat position X.
A proximity switch or a limit switch provided between the movable table 5 and the tool rest may be used, and the operating positions of these switches may be adjustable according to the outer diameter of the long object A. Further, although the position detection sensor 17 also uses the photoelectric sensor, other sensors such as a proximity switch may be used.

[0039]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, the sheet-like material is wound around the winding tube B in a roll shape, and the supporting rod 4 for supporting the long object A to be driven and rotated, and the length of the supporting rod 4. A device for cutting a roll-shaped long object, which is capable of advancing and retreating in a direction orthogonal to the vertical direction, and includes a rotary blade 11 for cutting the long object A in predetermined widths and a motor 14c for moving the rotary blade 11 forward and backward. In addition, a position detection sensor 16 that detects the position of the rotary blade 11 with respect to the support rod 4, an encoder 15 that outputs a pulse corresponding to the rotation of the motor 14c, and a retreat after the cutting operation of the rotary blade 11. And a backward position setting means for setting the position X, and a reference pulse number for setting the forward end position by converting the distance from the detection position of the position detection sensor 16 to the outer diameter position of the support rod 4 into a pulse number. Setting means and this standard The subtracted pulse number obtained by subtracting the converted pulse number converted by the number setting means and the measured pulse number measured by counting the pulse number when moving from the forward end position to the retreat position X from the converted pulse number. The memory (RAM) for storing and the rotary blade 11 is at the retracted position X.
From the forward end position 0 to the forward end position 0, a controller 17 having an output unit 0 for outputting at least one of a stop signal and a backward signal to the motor 14c when the converted pulse number is reached is provided. Since the distance from the detection position of the sensor 17 to the outer diameter position of the support rod 4 is converted into the number of pulses output from the encoder 15, the forward end position 0 can be set based on the converted number of converted pulses. In addition, the rotary blade 11 is moved forward from the retracted position X by setting the subtracted pulse number between the measured pulse number and the converted pulse number when the rotary blade 11 is moved from the advance end position 0 to the retracted position X of the rotary blade 11. The rotary blade 11 is moved from the retracted position X by comparing the measured pulse number when moving to the terminal position 0 with the converted pulse number in consideration of the subtracted pulse number. Forward end position for advancing 0 is also can be set. Therefore, it is possible to eliminate the troublesome work of accurately mounting the hit and limit switches at proper positions as in the conventional example, and to easily and accurately set the forward end position 0 regardless of the mounting position of the position detection sensor 17. Since the rotary blade 11 can be stopped or moved backward based on the preset number of pulses, the durability can be improved as compared with the conventional example, and the double safety can be achieved. Even if the device is not provided, the safety can be improved as compared with the conventional example using the limit switch.

[Brief description of drawings]

FIG. 1 is a partially omitted plan view of a cutting device of the present invention.

FIG. 2 is a partially omitted front view of the same device.

FIG. 3 is a partially enlarged side view of the same device.

FIG. 4 is a functional block diagram of the device.

FIG. 5 is an operation explanatory view of only a main part of the apparatus.

FIG. 6 is an explanatory diagram of a rotary blade automatic correction function of the apparatus.

[Explanation of symbols]

 4 Support Rod 11 Rotating Blade 14c Motor 17 Position Detection Sensor 18 Controller 18b Output Section A Long Object B Winding Tube 0 Forward End Position X Backward Position

Claims (1)

[Claims] 1. A support rod 4 for supporting a long object A which is driven and rotated by winding a sheet material around a winding tube B in a roll shape, and a support rod 4 in a direction orthogonal to the longitudinal direction of the support rod 4. Can move forward and backward,
A roll-shaped long object cutting device comprising a rotary blade (11) for cutting the long object (A) into predetermined widths and a motor (14c) for moving the rotary blade (11) forward and backward, the support rod of the rotary blade (11). Position detection sensor 17 for detecting the position with respect to 4
And a retreat position setting means for setting a retreat position X after the cutting operation of the rotary blade 11 corresponding to the rotation of the motor 14c, and a detection position of the position detection sensor 17. To the outer diameter position of the support rod 4 is converted into a pulse number to set the forward end position 0, reference pulse number setting means, the converted pulse number converted by the reference pulse number setting means, and the forward end A memory (RA that stores the subtracted pulse number obtained by subtracting the measured pulse number, which is obtained by counting and measuring the pulse number when moving from position 0 to the retreat position X, from the converted pulse number.
M) and an output unit 18b that outputs at least one of a stop signal and a retreat signal to the motor 14c when the number of pulses when the rotary blade 11 moves from the retreat position X to the forward end position 0 reaches the converted pulse number. A roll-shaped long object cutting device, which is provided with a controller 18 having