JP2000141172A - Cutting machining system and using method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect in a non-contact state the tip surface of a rod by a first photoelectric sensor by a method wherein a first photoelectric sensor is moved rearward or frontward at a low speed together with a first vice device without bringing a rod into abutment. SOLUTION: A first vice device 13 is provided with a first non-contact sensor 47 to detect that the tip end surface of a rob W is under a non-contact. A position detecting means 59 is provided to detect the position in a longitudinal direction of the first non-contact sensor 47. A second non-contact sensor 63 to detect in a non-contact state the end face of the rod W is arranged in the vicinity of the rear side of a cutting position. A control means is provided to control that when the tip end surface of the rod W is detected by the second non-contact sensor 63, drive of a carriage conveyor device 41 is stopped and when drive of the carriage conveyor device 41 is stopped, the first vice device 13 is moved rearward or frontward through operation of a vice moving means 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting system for transporting a bar to perform a cutting process.

[0002]

2. Description of the Related Art A conventional cutting system will be briefly described as follows.

That is, the cutting system includes a box-shaped support frame, and the support frame is provided with a cutting means for cutting a bar at a cutting position. The cutting means is a saw blade housing having an endless band saw blade and capable of moving up and down, and the band saw blade can be driven to travel. A first vice device is provided near the cutting means and in front of the cutting position, and a second vice device is provided near the cutting means and behind the cutting position. It is. 1st vise device, 2nd
The vice device can be moved in the front-rear direction by operating the first vise moving cylinder and the second vise moving cylinder, respectively, and the position of the rear side surface of the first vise device is detected by position detecting means. On the rear side of the second vise device, a transport conveyor device for transporting the bar in the forward direction is provided, and in the vicinity of the second vise device, a photoelectric sensor for detecting the tip surface of the bar is provided, When the leading end surface of the bar is detected by the photoelectric sensor, the drive of the conveyor device is stopped.

Accordingly, the bar is conveyed forward by the driving of the conveyor, and when the tip surface of the bar is detected by the photoelectric sensor, the driving of the conveyor is stopped.
Next, the bar is sandwiched by the second vice device, and the second vise device is moved forward at a low speed, so that the front end surface of the bar is abutted against the rear surface of the first vise device. Here, the position in the front-rear direction of the rear surface of the first vise device, which is detected by the position detecting means when the first vise device moves forward due to the abutting of the bar, is the front-rear direction of the front end surface of the bar. Position. Therefore, for example, the length in the front-rear direction from the cutting position to the tip end surface of the bar is determined. Based on the determined length, the bar is conveyed by the first vice device, and the bar is cut. It can be performed.

[0005]

By the way, in the conventional cutting system, the front end of the bar is abutted against the rear side of the first vice device to detect the position of the front end of the bar in the front-rear direction. Because of the large inertial force of the bar, the impact of the first vice device due to the striking of the bar is large. Therefore, in order to reduce the impact of the first vice device,
It is necessary to lower the moving speed of the second vice device, but on the other hand, there is a problem that the time for detecting the position of the tip end surface of the bar is lengthened and the working efficiency is deteriorated.

[0006]

According to the first aspect of the present invention, there is provided cutting means for cutting a bar at a cutting position, and a cutting means for clamping the bar in front of the cutting position. A vice moving means for moving the first vise device in the front-rear direction is provided; a second vice device for holding a bar near the rear side of the cutting position; A transport conveyor device for transporting the bar in the forward direction is provided on the rear side of the vice device, and a first non-contact sensor for detecting the leading end surface of the bar under non-contact is provided in the first vise device. Position detecting means for detecting the position of the contact sensor in the front-rear direction is provided, and a second non-contact sensor for detecting the end face of the bar under non-contact near the rear side of the cutting position is provided. When the tip surface of the bar is detected, the conveyor When the movement is stopped and the driving of the transport conveyor device is stopped, the first non-contact sensor is controlled to move the first vice device backward or forward by operating the vice moving means so as to detect the leading end surface of the bar. And a control means for performing the control.

According to the first aspect of the present invention,
The bar is transported forward by the drive of the transport conveyor device,
When the tip surface of the bar is detected in a non-contact state by the second non-contact sensor, the control means controls to stop driving of the transport conveyor device. Then, by controlling the first vice device to move backward or forward by operating the vice moving means by the control means, the first non-contact sensor is moved backward or forward, and the first non-contact sensor is moved backward or forward.
The tip surface of the bar is detected by a non-contact sensor in a non-contact state. Here, the position in the front-rear direction of the first non-contact sensor detected by the position detection means when the first non-contact sensor detects the tip end surface of the bar is the position in the front-rear direction of the tip end surface of the bar. . Therefore, for example, the length in the front-rear direction from the cutting position to the tip end surface of the bar is determined, and based on the determined length, the bar is conveyed by the first vise device as described below, and A cutting process can be performed.

After detecting the leading end surface of the bar, the first vice device clamps the bar and moves the first vice device forward by the operation of the vice moving means, thereby cutting the cut portion of the bar. Position at the cutting position. Then, the bar is cut by the cutting section to take out the product from the bar.

After the product is removed from the bar, the first vice device is released from the clamping state, and the first vice device is moved rearward by the operation of the vice moving means to approach the cutting means. After the cutting, the product is appropriately carried forward.

Further, after detecting the position of the tip end surface of the bar, the above-mentioned operation is repeated a plurality of times, whereby a plurality of products can be extracted from the bar.

Here, when the bar is transported forward,
When the tail end surface of the bar exceeds the detection position of the second non-contact sensor in the forward direction, the tail end surface of the bar (including the remaining material after cutting) is detected by the second non-contact sensor in a non-contact state. I do. Here, the first non-contact sensor detects the first end detected by the position detecting means when the tail end surface of the bar (remaining material) is detected.
The length of the bar (remaining material) can be obtained based on the position of the non-contact sensor.

According to the second aspect of the present invention, the bar is transported forward by the drive of the transport conveyor device, and the tip surface of the bar is brought into a non-contact state by the second non-contact sensor. A first step of controlling the driving of the transport conveyor device to be stopped by the control means upon detection;
After the process is completed, the first non-contact sensor is moved backward or forward by controlling the first vice device to move backward or forward by operating the vice moving means by the control means. The rod is moved, and the first non-contact sensor detects the tip end surface of the bar under the non-contact state.
And a process.

According to the third aspect of the present invention, in addition to the specific features of the second aspect, after the second step is completed, the bar is clamped by the first vice device, A third step of moving the first vise device in the forward direction by operating the vice moving means, thereby transporting the bar in the forward direction and positioning the cut portion of the bar in the cutting device;
After the step is completed, a cutting process is performed on the cut portion of the bar by the cutting means to take out the product from the bar, and after the fourth step is completed, the first vise device A fifth step of releasing the clamped state, moving the first vice device backward by operating the vise moving means to approach the cutting means, and a sixth step of sequentially repeating the third to fifth steps. And during the third step,
A seventh step of detecting the tail end surface of the bar in a non-contact state by the second non-contact sensor when the tail end surface of the bar exceeds the detection position of the second non-contact sensor in the forward direction. It is characterized by.

According to a fourth aspect of the present invention, there is provided a cutting means for cutting the bar at the cutting position, and the first vice device for holding the bar in front of the cutting position is provided in the front-rear direction. Vice moving means for moving the first vise device in the front-rear direction is provided, and a second vise device for holding a bar near the rear side of the cutting position is provided.
A transport conveyor device for transporting the bar in the forward direction is provided on the rear side of the vise device, and a non-contact sensor for detecting the leading end surface of the bar under non-contact is provided in the first vice device, and a front and rear of the non-contact sensor is provided. The position detecting means for detecting the position in the direction is provided, and when the leading end surface of the bar is detected by the non-contact sensor, the driving of the conveyor unit is stopped, and when the driving of the conveyor unit is stopped, the leading end surface of the bar is detected by the non-contact sensor. Control means for controlling the first vice device to move backward or forward by operating the vise moving means in order to detect the vise.

According to the fourth aspect of the present invention,
The bar is transported forward by the drive of the transport conveyor device,
When the tip surface of the bar is detected by the non-contact sensor, the control means controls the driving of the conveyor device to stop. Then, the non-contact sensor is moved rearward or forward by controlling the first vice device to move backward or forward by operating the vice moving means by the control means, and the rod is moved by the noncontact sensor. Detects the tip surface of the material under non-contact condition. Here, the position in the front-rear direction of the non-contact sensor detected by the position detecting means when the front end surface of the bar is detected is the front-back position of the front end surface of the bar. Therefore, for example, the length in the front-rear direction from the cutting position to the tip end surface of the bar is determined, and based on the determined length, the cutting process is performed while the bar is conveyed by the first vice device as described below. be able to.

After detecting the leading end surface of the bar, the bar is sandwiched by the first vice device, and the first vice device is moved forward by the operation of the vice moving means. by this,
The cut portion of the bar can be positioned at the cutting position. Then, the bar is cut by the cutting means to take out the product from the bar.

After the product is removed from the bar, the first vice device is released from the clamping state, and the first vice device is moved rearward by the operation of the vice moving means to approach the cutting means. After the cutting, the product is appropriately carried forward.

Further, after detecting the leading end surface of the bar, the above-described operation is repeated a plurality of times, so that the bar can be cut a plurality of times to take out a plurality of products from the bar. .

According to the fifth aspect of the present invention, the bar is conveyed forward by the driving of the conveyor, and the non-contact sensor detects the tip end surface of the bar in a non-contact state. A first step of controlling the conveyance conveyor device to stop driving by the control means; and, after the first step, activating the vice moving means by the control means to move the first vice device backward or forward. A second step of moving the non-contact sensor backward or forward by controlling the non-contact sensor to detect the tip surface of the bar under the non-contact state by the non-contact sensor. It is characterized by becoming.

[0020]

Embodiments of the present invention will be described below with reference to the drawings.

Referring to FIG. 1, a cutting system 1 according to an embodiment of the present invention is based on a support frame 3 on which a bar W is cut at a cutting position. A cutting means 5 for performing the cutting is provided. This cutting means 5 is provided with an endless band saw blade 7 in a vertical direction (in FIG. 1, front and back directions toward the paper surface).
The band saw blade 7 is movable and can be driven to travel, and is located at the cutting position when viewed from above.

On the front side (lower side in FIG. 1) of the support frame 3, there is provided a transfer table 11 for supporting the bar W so as to be movable in the forward direction. The transfer table 11 has a plurality of support rollers (not shown). ).

The transfer table 11 is provided with a first vice device 13 for holding the bar W so as to be movable in the front-rear direction. The first vise device 13 includes a vise bed 15 provided on the transfer table 11 so as to be movable in the front-rear direction, a fixed vise 17 provided on the vise bed 15, and a clamp cylinder 1 provided on the vise bed 15.
9, a movable vise 21 which can move in the left and right direction (the left and right direction in FIG. 1) which approaches and separates from the fixed vise 17 by the operation of FIG. In order to move the first vise device 13 in the front-rear direction, the transfer table 11 is provided with a vice moving cylinder 25 having a piston rod 23 movable in the front-rear direction. Connected to. A hydraulic unit 27 is connected to the vice moving cylinder 25, and the hydraulic unit 27 is provided with a flow control valve 29 for controlling the moving speed of the first vice device 13.

A second vice device 31 for holding the bar W is provided behind the cutting position in the support frame 3. The second vise device 31 includes a vise bed 33 fixed to the support frame 3 behind the cutting position, a fixed vise 35 provided on the vise bed 33, and an operation of a clamp cylinder 37 provided on the vise bed 33. And a movable vise 39 that can move in the left-right direction that approaches and separates from the fixed vise 35.

At the rear of the support frame 3, there is provided a transport conveyor device 41 for transporting the bar W in the forward direction. The transport conveyor device 41 includes a plurality of transport rollers 43 and a transport motor 45 for driving the plurality of transport rollers 43 to rotate.

The first vise device 13 is provided with a first photoelectric sensor 47 for detecting the tip end surface of the bar W under non-contact, and the first photoelectric sensor 47 is a fixed vise in the first vise device 13. 17 comprises a light-emitting first photoelectric sensor 47a provided at the rear of the movable vise 21 via a bracket 51, and a light-receiving first photoelectric sensor 47b provided at the rear of the movable vise 21 via a bracket 51. Here, the through holes 5 through which the light emitted from the light emitting side first photoelectric sensor 47 can pass are provided at the rear of the fixed vise 17 and the rear of the movable vise 21.
3, 55 are provided. In order to detect the position of the first photoelectric sensor 47 in the front-rear direction, the piston rod 23 is provided with a rack 57 extending in the front-rear direction.
At an appropriate position, a pinion 61 meshing with the rack 57 and having an encoder 59 is rotatably provided.

The second vise device 31 is provided with a second photoelectric sensor 63 for detecting the end face of the bar W under non-contact.
The second photoelectric sensor 63 includes a light-emitting second photoelectric sensor 63 a provided via a bracket 65 at a front portion of the fixed vise 35 in the second vise device 31, and a movable vise 39.
The light receiving side second provided at the front of the
And a photoelectric sensor 63b. Here, the fixed vise 35
And a front portion of the movable vise 39, a through hole 69 through which light emitted by the light emitting side second photoelectric sensor 63 can pass.
71 is provided.

First photoelectric sensor 47 and second photoelectric sensor 6
3 is connected to the control means 73 as shown in FIG.
This control means 73 is provided in the vice moving cylinder 25 as described later.
And a controller 75 for controlling the transport motor 45 and the like, and for performing calculations as described later.

Next, a method of using the cutting system 1 will be described with reference to flowcharts shown in FIGS.

The bar W is transported forward by the drive of the transport motor 45 in the transport conveyor device 41 (step 1), and the second photoelectric sensor 63 is turned off so that the tip end surface of the bar W is in a non-contact state. (Step 2), the control means 73 controls the transport speed of the transport conveyor device 41 to be slowed down, and controls the transport motor 45 to stop after a predetermined time (Step 3). At this time, the tip of the bar W is located on the front side of the second vise device 31 between the fixed vice 35 and the movable vise 39. Then, the clamp cylinder 37 is operated to move the movable vise 39.
Then, the bar W is sandwiched by the fixed vise 35 (Step 4).

After step 4 is completed, the control means 73
The vise moving cylinder 25 is operated to move the first vice device 13 backward at a high speed (step 5).
When the photoelectric sensor is turned off (step 6), the control means 73 controls the vise moving cylinder 25 to temporarily stop the movement of the first vice device 13 and move the first vise device 13 forward at high speed (step 6). Step 7). Then, when the first photoelectric sensor 47 is turned ON by the high-speed movement of the first vise device 13 in the forward direction (step 8), the movement of the first vise device 13 is temporarily stopped, and the first vise device 13 is moved backward. (Step 9). Then, when the first photoelectric sensor 47 is turned off by the backward low-speed movement of the first vice device 13 and the leading end surface of the bar W is detected (step 10), the controller 7 is controlled.
The vise moving cylinder 25 is controlled by 3 to stop the movement of the first vice device 13 (step 11).

Here, the bar W is detected by the first photoelectric sensor 47.
When the front end surface of the bar W is detected, the position in the front-rear direction of the first photoelectric sensor 47 detected by the encoder 59 is the position in the front-rear direction of the front end surface of the bar W. Therefore, for example, the length in the front-rear direction from the cutting position to the tip end surface of the bar W is calculated by the calculating means 75, and based on the calculated length, the transfer of the bar by the first vice device 13 is performed as follows. The cutting process is performed on the bar while performing.

Instead of moving from step 7 to step 11 via step 10, it is permissible to move to step 11 via steps 12 and 13. That is, when the first vise device 13 is moved forward at a low speed (step 12), and the first photoelectric sensor 47 is turned on to detect the tip end surface of the bar W (step 13), the control means 73 controls the vise by the control means 73. The movement of the first vice device 13 is stopped by controlling the movement cylinder 25 (step 11).

After step 11 is completed, the bar W is clamped by the movable vise 21 and the fixed vise 17 in the first vise device 13 which have been approached to the cutting means 5 in advance (step 14), and the vise moving cylinder 25 is operated. By moving the first vise device 13 forward,
The bar W is conveyed forward, and the cut portion of the bar W is positioned at the cutting position (steps 15, 16, 17). The first
If the cut portion of the bar W cannot be positioned at the cutting position even if the vice device 13 is moved forward to the stroke end of the vise moving cylinder 25, the bar W is moved by the second vise device 31. First vice device 13 after clamping
Is released, the first vice device 13 is temporarily moved backward, the bar is again clamped by the first vise device 13, and the first vise device 13 is released after the clamped state of the second vise device 31 is released. Is moved forward.

During positioning of the bar W, the second
When the photoelectric sensor 63 is turned on (step 1
6) A bar (remaining material) is calculated by the calculating means 75 based on the position of the first photoelectric sensor 47 detected by the encoder 59.
The length of W is calculated (step 18). Further, the control means 73 determines whether or not the product can be taken out from the bar (remaining material) W (step 19). If the product can be taken out, feedback is provided before step 17 to take out the product. If it is not possible, an alarm for the shortage of the bar (remaining material) W is generated (step 2).
0).

After the positioning of the bar W is completed (step 17), the saw blade housing 9 is moved downward while the band saw machine 7 is running. Thus, the bar W can be cut and the product can be taken out from the bar W (step 21).

After the step 21 is completed, the clamped state of the first vice device 13 is released (step 22), and the first vise device 13 is moved backward by the operation of the vise moving cylinder 25 so that the first vice device 13 is moved to the cutting section 5. (Step 23). After the cutting, the product is appropriately carried forward.

After step 23 is completed, the control means 7
It is determined whether n products have been taken out of one bar W by step 3 (step 24). If n products have been taken out, the operation is terminated. If n products have not been taken out, the operation is terminated. Before step 14, feedback is performed and the above-described operation is repeated.

As described above, according to the embodiment of the present invention, the first photoelectric sensor 47 is moved at a low speed in the rearward or forward direction together with the first vice device 13 without hitting the bar W, and By detecting the front end surface of the bar W in a non-contact state by the one photoelectric sensor 47, the position of the front end surface of the bar W in the front-rear direction can be detected. Does not need to be reduced to a lower speed, the time for detecting the position of the tip end surface of the bar W is suppressed from becoming longer, and the effect of improving work efficiency is achieved.

Further, by detecting the tail end surface of the bar (remaining material) W in a non-contact state by the second photoelectric sensor 63,
The length of the bar (remaining material) W can be calculated, and the processing of the bar (remaining material) W can be performed appropriately.

The present invention is not limited to the description of the embodiment of the invention as described above.
3, the first photoelectric sensor 47 performs the above-described operation. In addition, when the first photoelectric sensor 47 detects the leading end surface of the bar W, the transport speed of the transport conveyor device 41 is reduced, and after a predetermined time, The driving of the transport motor 45 may be stopped.

[0042]

According to the first aspect of the present invention, the first non-contact sensor is moved rearward or forward together with the first vice device without hitting the bar. By detecting the front end surface of the bar in a non-contact state, the position of the front end of the bar in the front-rear direction can be detected, so that it is necessary to lower the moving speed of the first vice device. In addition, it is possible to suppress an increase in the time required to detect the position of the tip end surface of the bar, thereby achieving an effect of improving work efficiency.

The length of the bar (remaining material) can be calculated by detecting the tail end surface of the bar (remaining material) under the non-contact state by the second non-contact sensor. (Remaining material) can be appropriately performed.

According to the second aspect of the present invention, the first non-contact sensor is moved rearward or forward together with the first vice device without hitting the bar, and the bar is moved by the first non-contact sensor. By detecting the front end face of the rod material in a non-contact state, the position of the front end face of the rod material in the front-rear direction can be detected. Therefore, it is not necessary to lower the moving speed of the first vice device. It is possible to suppress an increase in the time for detecting the position of the front end surface of the material, thereby achieving an effect of improving work efficiency.

According to the invention described in claim 3, according to claim 2
Calculating the length of the bar (remaining material) by detecting the tail end face of the bar (remaining material) in a non-contact state by the second non-contact sensor in addition to the effect of the invention described in (1). And the bar (remaining material) can be appropriately processed.

According to the invention as set forth in claim 4 or claim 5, the first non-contact sensor is moved rearward or forward together with the first vice device without hitting the bar material, and the first
By detecting the front end surface of the bar in a non-contact state by the non-contact sensor, the position of the front end surface of the bar in the front-rear direction can be detected, so that the moving speed of the first vice device can be reduced. It is not necessary to carry out, and it is possible to suppress an increase in the time for detecting the position of the tip end surface of the bar, thereby achieving an effect of improving work efficiency.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a cutting system.

FIG. 2 is a control block diagram.

FIG. 3 is a flowchart showing a method of using the cutting system.

FIG. 4 is a flowchart showing a method of using the cutting system.

FIG. 5 is a flowchart showing a method of using the cutting system.

DESCRIPTION OF SYMBOLS 1 Cutting system 5 Cutting processing means 13 First vice device 25 Vice moving cylinder 31 Second vice device 41 Conveyor device 47 First photoelectric sensor 63 Second photoelectric sensor 73 Control means

Claims (5)

[Claims] 1. A cutting device for cutting a bar at a cutting position is provided, and a first vice device for sandwiching the bar is provided in front of the cutting position so as to be movable in the front-rear direction. A vice moving means for moving the bar in the front-rear direction, a second vice device for holding the bar in the vicinity of the rear side of the cutting position, and a transport conveyor for transporting the bar in a forward direction behind the second vise device. A first non-contact sensor for detecting the front end surface of the bar under non-contact in the first vise device, and a position detecting means for detecting a position of the first non-contact sensor in the front-rear direction; A second non-contact sensor for detecting the end surface of the bar under non-contact is provided near the rear side of the cutting position, and when the second non-contact sensor detects the front end surface of the bar, the drive of the transport conveyor device is stopped. Together with the conveyor system stops driving Then, the first non-contact sensor detects the leading end surface of the bar by operating the vice moving means to thereby detect the first end of the bar.
A cutting system comprising a control means for controlling the vise device to move backward or forward. 2. When the bar is conveyed forward by driving the conveyor, and when the second non-contact sensor detects the leading end surface of the bar in a non-contact state, the controller conveys the bar. A first step of controlling so as to stop the driving of the first device; and, after the first step is completed, controlling the device to move the first vice device backward or forward by operating the vice moving means by the control means. A second step of moving the first non-contact sensor in the rearward or forward direction and detecting the tip end surface of the bar under the non-contact state by the first non-contact sensor. A method for using the cutting system according to claim 1. 3. After the completion of the second step, the first step is performed.
The bar is clamped by the vise device, and the first vise device is moved forward by the operation of the vice moving means, whereby the bar is conveyed forward and the cut portion of the bar is positioned in the cutting device. A third step of, after the third step, ending the fourth step of cutting the bar to be cut by the cutting means to take out the product from the rod, and a fourth step. A fifth step of releasing the clamped state of the first vice device and moving the first vice device backward by the operation of the vice moving means to approach the cutting means; and third to fifth steps. And a second step of sequentially repeating the step until the tail end surface of the bar exceeds the detection position of the second non-contact sensor in the middle of the third step. A seventh step of detecting a state under a non-contact state; The method of using the cutting system according to claim 2, comprising: 4. A cutting device for cutting a bar at a cutting position, a first vice device for holding the bar in front of the cutting position is provided movably in the front-rear direction, and the first vice device is provided. A vice moving means for moving the bar in the front-rear direction, a second vice device for holding the bar in the vicinity of the rear side of the cutting position, and a transport conveyor for transporting the bar in a forward direction behind the second vise device. The first vise device is provided with a non-contact sensor for detecting the front end surface of the bar under non-contact, and a position detecting means for detecting the position of the non-contact sensor in the front-rear direction is provided. When the leading end surface of the bar is detected, the driving of the conveyor device is stopped, and when the driving of the conveyor device is stopped, the first vice device is moved backward by the operation of the vice moving means so as to detect the leading end surface of the bar by a non-contact sensor. A cutting system comprising a control means for controlling movement in a forward or forward direction. 5. When the bar is conveyed forward by the driving of the conveyor, and the non-contact sensor detects the leading end of the bar in a non-contact state, the control means drives the conveyor. A first step of controlling to stop the first step, after the first step, by controlling the control means to operate the vise moving means to move the first vice device in the backward or forward direction, The method according to claim 4, further comprising a second step of moving the non-contact sensor in the rearward or forward direction, and detecting the tip end surface of the bar under the non-contact state by the non-contact sensor. How to use the cutting system described.