JP3528611B2 - Method and apparatus for cutting binding material - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of cutting a binding material wound to bind an object having a smooth surface property, such as a coil, and an apparatus therefor.

[0002]

2. Description of the Related Art FIG. 6 is a schematic view of a conventional automatic cutting device for a binding material. In FIG. 6, a metal band-shaped binding material 2 is wound around the coil 1. The rotary round blade 3 for cutting the binding material 2 is rotated by the rotational drive force of the drive pulley 9 being transmitted via the drive belt 10. The round blade 3 and the drive pulley 9 are attached to a mount 11. The mount 11 is attached to the linear guide 12 so as to be movable (movable back and forth), and the round blade 3 can be moved back and forth by linearly moving the mount 11. The round blade forward / backward moving cylinder 13 is for moving the mounting base 11 back and forth. In addition, the linear guide 12 is the cutting machine lift 1
5, the cutting machine elevating table 15 is attached to the cutting machine elevating linear guide 16 so as to be vertically movable.

Further, a rack gear 17 for raising and lowering the cutting machine is provided along the side surface of the raising and lowering table 15 for the cutting machine in the vicinity thereof. A cutting machine lifting drive motor 18 and a cutting machine lifting pinion gear 19 are attached to the cutting machine lifting base 15, and the cutting machine lifting pinion gear 19 and the cutting machine lifting rack gear 17 are engaged with each other. The rack gear 17 for raising and lowering the cutting machine is rotationally driven by the drive motor 18 for raising and lowering the cutting machine, so that the cutting machine raising and lowering table 15 moves in the vertical direction. The drive pulley 9, the round-blade forward / backward moving cylinder 13, and the cutting machine lifting drive motor 18 are controlled by the cutting machine control device 6, respectively.

In such a conventional binding material automatic cutting device, the cutting operation of the cutting device is started after the coil 1 bound by the binding material is placed at a predetermined position. Since the position of the binding material 2 of the coil 1 differs for each coil and is not constant, the round blade 3 stands by at the initial position where the binding material 2 does not exist. In response to a command from the cutting machine control device 6, the round blade 3 starts to rotate, and the forward / backward moving cylinder 13 operates to advance (extrude) the round blade mounting base 11 to a position where the binding material 2 can be cut. Hold the position. Then, in response to a command from the cutting machine control device 6, the cutting machine lifting motor 18
Operates to raise (lower) the cutting machine elevating table 15 at a predetermined speed during cutting. Even after the round blade 3 has cut (cutting) the binding material 2 while rotating (rotating) together with the cutting machine elevating table 15, the cutting operation is continued to a predetermined position where the binding material 2 does not exist. Then, in response to a command from the cutting machine control device 6, the forward / backward moving cylinder 13 moves backward, the cutting machine lifting table 15 descends to reach the initial position, and then the rotation of the round blade 3 is stopped to perform a series of cutting operations. finish.

[0005]

Since the conventional automatic binding material cutting device is constructed as described above, the binding material 2 is used.
If there is a variation in the position of, the binding material 2 may not be completely cut, and the cutting operation may end. Therefore, it is necessary to prevent such a situation. For this reason, the range in which the round blade 3 moves has to be made larger than necessary, resulting in an extra time required for cutting, thus lowering work efficiency. In addition, in order to make the cutting width larger than necessary, round blade 3
However, the frequency of replacement of the round blade 3 is increased, and a large round blade purchase cost is required.

Further, depending on the coil 1, the binding material 2 is extremely
There is a case where the position of is shifted from the center, and in this case, since the round blade 3 does not cut to that position, there was a situation where the binding material 2 could not be cut. In addition, even if the round blade 3 is greatly worn, the binding material 2 may not be completely cut. Therefore, it is necessary to have a person who monitors whether or not such an abnormality has occurred, so that the cutting of the binding material 2 can be automated. It was an obstacle to the plan.

An object of the present invention is to provide a method of cutting a binding material and an apparatus for the same, which can improve the cutting efficiency and reduce the cutting operation cost. Another object of the present invention is to
In addition to the above, it is an object of the present invention to provide a binding material cutting method and an apparatus for the binding material, which are capable of detecting the cutting state of the binding material.

[0008]

(1) A method of cutting a binding material according to the present invention is a method of cutting a binding material wound to bind an object having a smooth surface texture, in which the position of the binding material is cut. Is detected by the detection sensor, the cutting operation is performed in the area where the binding material is present, and after the cutting operation is performed, the binding material is detected again by the detection sensor, and the quality of the cutting is judged based on the output of the detection sensor. It is something to detect.

(2) The apparatus for cutting a binding material according to the present invention is
In a device that cuts a binding material wound to bind an object having a smooth surface texture, the cutting blade that cuts the binding material, a drive mechanism that moves the cutting blade, and the relative position of the cutting blade are always constant. Sensor for detecting the binding material, a detection device for processing the signal from the detection sensor to detect the position of the binding material, and a drive mechanism and disconnection based on the detection signal of the detection device. By controlling the blade drive,
After the binding material is cut by the cutting blade and the cutting operation is performed, the detection sensor is moved to detect the binding material, and the detection device detects the quality of the cutting based on the output of the detection sensor.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing the outline of an apparatus for cutting a metallic binding material according to an embodiment of the present invention. Figure 1
In, the metal band-shaped binding material 2 is wound around the coil 1. Rotating round blade 3 for cutting the binding material 2
The rotary drive force of the drive pulley 9 is transmitted via the drive belt 10 to rotate. The round blade 3 and the drive pulley 9 are attached to a mount 11. The mount 11 is attached to the linear guide 12 so as to be movable (movable back and forth), and the round blade 3 can be moved back and forth by linearly moving the mount 11. Round blade forward / reverse cylinder 13
Is for moving the mount 11 back and forth along the linear guide 12. Further, the linear guide 12 is attached to the cutting machine elevating table 15, and the cutting machine elevating table 15 is attached to the cutting machine elevating linear guide 16 so as to be vertically movable.

A rack gear 17 for raising and lowering the cutting machine is provided along the side surface of the raising and lowering table 15 for the cutting machine in the vicinity thereof. A cutting machine lifting drive motor 18 and a cutting machine lifting pinion gear 19 are attached to the cutting machine lifting base 15, and the cutting machine lifting pinion gear 19 and the cutting machine lifting rack gear 17 are engaged with each other. As the cutting machine elevating pinion gear 19 is rotationally driven by the cutting machine elevating drive motor 18, the cutting machine elevating table 15 moves up and down, whereby the round blade 3 moves up and down. .

In the present embodiment, in addition to the above, the mounting base 1 is arranged so that the ultrasonic sensor 4 is located near the round blade 3.
1, and the output of the ultrasonic sensor 4 is input to the ultrasonic detector 5. The ultrasonic detector 5 processes the ultrasonic signal from the ultrasonic sensor 4 to detect the binding material 2, and outputs the detection result to the cutting machine control device 6. The cutting machine control device 6 controls the drive pulley 9, the round blade forward / backward moving cylinder 13, and the cutting machine lifting drive motor 18 based on the input signals.

FIG. 2 shows a binding material 2 wound around the outer circumference of the coil 1.
It is an operation explanatory view when detecting and disconnecting. The operation of the cutting device of FIG. 1 will be described with reference to FIG.

After arranging the bundled coils 1 at a predetermined position, the cutting operation of the cutting machine is started. Since the position of the binding material 2 of the coil 1 differs for each coil and is not constant, the round blade 3 waits at the initial position a where the binding material 2 does not exist, for example, on the lower end side of the coil 1. In response to a command from the cutting machine control device 6, the forward / rearward movement cylinder 13 operates to move the mounting base 11 forward to move the round blade 3 to a position b apart from the surface of the coil 1 by a predetermined distance.

Thereafter, the motor 18 for raising and lowering the cutting machine operates to raise the cutting machine elevating table 15. In the ascending process, the ultrasonic sensor 4 projects ultrasonic waves at a predetermined angle and receives the reflected sound. Since the ultrasonic sensor 4 itself rises, the ultrasonic wave is projected while scanning the surface of the coil 1 in the upward direction. The ultrasonic detector 5 inputs the output of the ultrasonic sensor 4 and detects the position of the binding material 2 based on the signal (the details of this detection will be described later). The ultrasonic detector 5 sends the detection signal to the cutting machine controller 6. When the cutting machine control device 6 receives the detection signal, the cutting machine elevating motor 18 is stopped to stop the rising, and the drive pulley 9 is rotationally driven to rotate the round blade 3. At the same time, the forward / backward moving cylinder 13 operates to advance (extrude) the round blade mounting base 11 to a position where the bundling material 2 can be cut, and the round blade 3 is advanced to the position of the coil surface c to hold the position. To do.

Then, the motor 18 for raising and lowering the cutting machine is rotated to raise the cutter blade 15 together with the cutter blade 15 while the round blade 3 is rotated, for example, to the position d to raise the binding material. Cut 2. The amount of ascent at this time includes the width of the binding material and the variation and margin of the detection position. Then, only during this period, the cutting device moves at a low predetermined cutting speed. Then, in response to a command from the cutting machine control device 6, the forward / backward moving cylinder 13 is driven to retract the round blade 3 to the position e, stop the rotation of the round blade 3, and then set the cutting machine lift 15 at a cutting speed. Also descend at high speed. Even during this descent, the ultrasonic detector 5 detects the binding material 2, and when the binding material 2 is detected again, an abnormal alarm is sounded and stopped, or the cutting of the binding material 2 is repeated again. I do. As described above, a series of cutting operations is completed.

Next, the reason why the ultrasonic sensor 4 is used as a sensor for detecting the binding material 2 and its operation will be described in detail.

First, the history of adopting the ultrasonic sensor 4 will be described. As a sensor for detecting the binding material wound around the coil, for example, a distance sensor may be used. This is because the distance to the surface of the coil and the distance to the surface of the binding material are different, so that the binding material and the coil are discriminated from each other by the difference in the measurement distance. However,
In this method, the coil diameter may vary depending on the position even if the coil is the same because the surface of the coil is misaligned when the steel sheet is wound, and the distance to the coil surface is not always constant. Depending on the mounting method, a gap may be formed between the coil and the binding material, so that the distance to the binding material is not always constant, which makes it difficult to determine.

Further, a method using light as a detection method,
For example, it is possible to use a photoelectric sensor. However, in the test using this method, when the surface was wet with water or rust was attached, the reflected condition was different, so stable reflected light could not be obtained, and the detection reliability of the sensor was low. It became a result. Similarly, a method of performing image processing from an image of a coil and a binding material can be considered as a method using an optical system. However, in addition to the variation in the reflection characteristic described above, the sensor becomes expensive. There are drawbacks.

The ultrasonic sensor 4 is adopted based on the results of various tests and examinations as described above, and by using ultrasonic waves as a binding material detecting sensor, In order to solve the above problem, the reason for this will be explained through the following operation explanation.

3A and 3B show the ultrasonic sensor 4 of FIG.
FIG. 3 is an explanatory diagram of a detection principle of the above. As shown in FIG. 3A, since the surface of the coil 1 is smooth without the binding material 2, most of the projected ultrasonic waves are specularly reflected by the surface of the coil 1 and the ultrasonic sensor 4 I won't come back. On the other hand, as shown in FIG. 3B, when the binding material 2 is present,
When the ultrasonic wave is projected on the boundary portion between the coil 1 and the binding material 2, the ultrasonic wave is diffusely reflected at the edge portion of the binding material 2, so that part of the ultrasonic wave is reflected back to the ultrasonic sensor 4 side and returns. come. Therefore, the ultrasonic sensor 4 is installed so that the ultrasonic waves are projected onto the edge surface of the binding material 2, and a method perpendicular to the surface of the coil 1 is used so as not to receive reflection from the smooth surface of the coil 1. By arranging the binder diagonally while avoiding the line, the binding material can be detected with high sensitivity. Further, in the method using this ultrasonic wave, it suffices if the presence or absence of the ultrasonic wave can be detected, so the detection sensitivity is better than that of measuring the distance, and it is less susceptible to the influence of disturbance. Further, since the ultrasonic sensor 4 can be arranged at a relatively distant position by using ultrasonic waves, it is possible to avoid the risk of damage to the sensor due to splashing of the binding material when cutting the binding material.

FIG. 4 is a view showing the positional relationship between the ultrasonic sensor 4 and the round blade 3 when the binding material 2 is cut in the direction shown in FIG. 2 (from the bottom to the top). Here, the reflected sound from the bundling material 2 by the ultrasonic sensor 4 is only from the upper edge of the bundling material 1, so that the tip of the round blade 3 reaches the lower surface of the bundling material 2 at the detection position by the ultrasonic sensor 4. Must be detected before. Therefore, the ultrasonic sensor 4 needs to be installed above the round blade 3, and at that time, the center position of the round blade 3 and the installation position of the ultrasonic sensor 4 are determined by the formula (1) when detecting the binding material, for example. ). H = A + Ltan θ−S + β (1)

Here, H is the distance between the center of the round blade 3 and the ultrasonic sensor 4, A is the width of the binding material, and S is the measurement when the ultrasonic sensor 4 detects the upper edge of the binding material 1. The distance between the axis center and the upper surface edge, L is the distance between the ultrasonic sensor and the coil surface, θ is the projection angle of the ultrasonic sensor 4, and β is a margin including detection variations.

The equation (1) has a relation when the ultrasonic sensor 4 and the round blade 3 are on the same plane, but the arrangement can be determined by the same idea even when they are not on the same plane. it can.

Further, although the above description relates to the structure in which the bundling material 2 is cut while the round blade 3 is raised,
When cutting the binding material 2 while lowering the round blade 3, the ultrasonic sensor 4 of FIG. 4 may be installed at a position symmetrical with respect to the round blade 3, that is, below the round blade 3. If it is difficult to install the device on the lower side due to the configuration of the device, the center position of the round blade 3 and the installation position of the ultrasonic sensor 4 may be set as shown in FIG. In, it may be determined so as to have the relationship shown in Expression (2).

[0026] H = Ltan θ + S−β (2)

Here, H is the center of the round blade 3 and the ultrasonic sensor 4.
Is the distance between the center of the measurement axis and the upper surface edge when the ultrasonic sensor 4 detects the upper surface edge of the binding material 2, L is the distance between the ultrasonic sensor 4 and the surface of the coil 1, and θ is The projection angle of the ultrasonic sensor 4 and β indicate the amount of allowance including variations in detection.

In the above embodiment, when the ultrasonic sensor 4 detects the edge of the binding material 2,
The relative position between the ultrasonic sensor 4 and the round blade 3 is determined so that the position of the round blade 3 (the position in the vertical direction) corresponds to the edge of the binding material 2. If not, do the following: That is, the cutting machine control device 6 inputs the detection signal from the ultrasonic detector 5 and also takes in the signal from the encoder 20 which rotates with the rotation of the pinion gear 19 for moving the cutting machine up and down, to thereby detect the round blade 3. The cutting operation is performed when the position (the position in the up-down direction) reaches the position corresponding to the edge of the binding material 2.

Further, in the above embodiment, the example of the cutting device for the coil binding material has been described, but the object of the present invention is not limited to this, and a binding material having a smooth surface texture can be used. The binding material other than the coil is also applicable. Further, the binding material is not limited to the strip made of steel plate, and may have a complicated shape such as a wire rope. Further, the round blade of the cutting device may not be the round blade shown in the above embodiment. Furthermore, the movement of the cutting device is not limited to the front and back and the up and down, and the movement may be determined according to the shape of the object.

[0030]

According to the present invention, the following effects can be obtained. (1) Since it is less necessary to cut an extra portion in order to cut after detecting the position of the binding material, the time required for cutting can be shortened and the efficiency of cutting work is improved. (2) Since the excessive amount of the binding material is cut less, the wear of the cutting tool (for example, a round blade) is reduced, and the replacement cost of the cutting tool can be reduced. (3) Since it is possible to detect an abnormal cutting of the binding material,
It is not necessary for a person to constantly monitor the occurrence of an abnormality, and the work load can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a binding material cutting device according to an embodiment of the present invention.

FIG. 2 is an operation explanatory view of the binding material cutting device of FIG.

FIG. 3 is an explanatory diagram of a binding material detection principle using the ultrasonic sensor of FIG.

4 is a diagram showing a positional relationship between an ultrasonic sensor and a round blade of the binding material cutting device of FIG.

FIG. 5 is a diagram showing another positional relationship between the ultrasonic sensor and the round blade.

FIG. 6 is a schematic configuration diagram of a conventional automatic binding material cutting device.

[Explanation of symbols]

1 coil 2 binding material 3 round blade 4 Ultrasonic sensor 5 Ultrasonic detector 6 Cutting machine control device 9 Drive pulley 10 belts 11 Round blade mount 12 Linear guide for moving circular blade 13 Round blade mount, forward and backward cylinder 15 Cutting machine lift 16 Linear guide for lifting and lowering the cutting machine 17 Fixed rack gear 18 Cutting machine lifting motor 19 Pinion gear for lifting the cutting machine 20 encoder

Claims (2)

(57) [Claims] 1. A method of cutting a binding material wound to bind an object having a smooth surface texture, wherein a position of the binding material is detected by a detection sensor, and a cutting operation is performed in an area where the binding material is present. There line, after the cutting operation,
Again, detecting the binding material by the detection sensor,
A method of cutting a binding material, which is characterized by detecting the quality of cutting based on the output of a detection sensor . 2. An object having a smooth surface texture is bound.
In the device that cuts the binding material wound for
Cutting blade for cutting a blade and a drive mechanism for moving the cutting blade
The cutting blade so that the relative position is always constant.
A detection sensor for holding the binding material, and the detection
A sensor that processes the signal from the sensor to detect the position of the binding material.
Output device and the drive machine based on the detection signal of the detection device
Controls the structure and drive of the cutting blade, and binds to the cutting blade.
After cutting the material and performing the cutting operation, the detection sensor
The binding material is detected while moving the
The device detects the quality of the cutting based on the output of the detection sensor.
Cutting device forming flux material you characterized in that a drive control device for.