JPH0112163Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a positioning device for a long material such as an H-shaped steel or a square pipe, which can position a series of machining positions located at appropriate intervals from the end of the material at predetermined positions. .

Conventionally, in order to position a desired processing position at a predetermined position among a series of processing positions located at appropriate intervals from the end of a long material, the long material is appropriately transported in the longitudinal direction and a measure ring is used. A roller called a roller was pressed against the surface of a long material, and the amount of movement of the long material was converted into the number of rotations of the roller. and,
The elongated material is positioned by being transported in the longitudinal direction until the amount of movement (number of rotations) detected by the roller reaches a predetermined amount of movement.

However, if the smoothness of the sliding surface of the roller or long material is low, the amount of movement of the long material cannot be accurately converted into the number of revolutions of the roller, and the desired processing of the long material cannot be achieved. It is not possible to precisely position the position to a predetermined position.

Therefore, this invention aims to solve the above problems.
It is an object of the present invention to provide a positioning device for a long material that can accurately position a desired processing position of the long material at a predetermined position.

Embodiments of the present invention will be described below based on the drawings.

Referring to FIGS. 1 and 2, as an example of the conveyor in the long material positioning device 1, the roller conveyor 9 is moved in the left-right direction (in the left-right direction in FIG. 1,
In FIG. 2, it is provided so as to extend in the front and back direction toward the plane of the paper. A plurality of conveyor rollers 11 are rotatably provided on a frame constituting a part of the roller conveyor 9 at predetermined intervals in the left-right direction, and a long material 3 such as an H-shaped steel is mounted on the conveyor roller 11. It is placed there. Therefore, by appropriately operating a conveyor drive device (not shown) to rotate the plurality of conveyor rollers 11 via a chain (not shown) and a sprocket (not shown), the long material 3 can be moved relatively quickly. It can be transferred at high speed in the left-right direction, in other words, in the longitudinal direction.

Clamp devices (vises) 27 and 29 are provided at appropriate positions above the roller conveyor 9 to grip the long material 3 and transport it at a relatively slow speed.

More specifically, a roller conveyor 9 is installed at an appropriate position.
A gate-shaped frame 19 is provided that covers the right side of the door, and a slider 23 that is movable in the left-right direction is provided on this gate-shaped frame 19. In order to move the slider 23 in the left-right direction, a first fluid pressure cylinder device 2 is provided at an appropriate position on the gate-shaped frame 19.
1 is provided, and a piston rod constituting a part of this first fluid pressure cylinder device 21 is connected to an appropriate position of the slider 23. Further, in order to grip the long material 3, the slider 23 is provided with the clamp devices 27 and 29, and by appropriately operating the second fluid pressure cylinder device 25 attached to the slider 23 at an appropriate position. , long material 3
It is possible to grasp and release the grasped state.

As understood from the above-described configuration, by appropriately operating the conveyor drive device to rotate the conveyor rollers 11, the elongated material 3 can be transported in the longitudinal direction at a relatively high speed. Then, the drive of the conveyor drive device is stopped, and the second fluid pressure cylinder device 25 is appropriately operated to grip the long material 3, and the first fluid pressure cylinder device 21 is appropriately operated to move the slider 23. By moving, the long material 3 can be transported in the longitudinal direction at a relatively slow speed.

In order to detect the tip 5 of the long material 3, the frame of the roller conveyor 9 has a plurality of first sensors 13 (unit distance passage detection A second sensor 15 (material tip detection sensor) is provided upstream of each first sensor 13 when viewed from the direction in which the long material 3 is transported. The first sensor 13 and the second sensor 15 are sensors such as photoelectric switches, and detect the tip end 5 of the transported long material 3 by an optical detection method. Further, when a desired second sensor 15 detects the tip end 5 of the long material 3 transferred at a relatively high speed by the conveyor drive device, the operation of the conveyor drive device is stopped.

In order to detect the amount of movement of the slider 23 at least within the interval between the first sensors 13, a magnetic scale 17 is attached to an appropriate position on the right side of the frame of the roller conveyor 9. A detection head 31 is provided. When the desired first sensor 13 detects the tip 5 of the long material 3, the amount of movement of the slider 33 is detected by the magnetic scale 17 and the detection head 31.
is started by.

Based on the above-described configuration, the operation of this embodiment will be explained with reference to FIGS. 1, 2, and 3.
For example, when positioning a desired processing position located 2400 mm from the tip 5 of the long material 3 to the reference position 7, first operate the conveyor drive device appropriately to rotate the conveyor roller 11, and then The material 3 is transported in the longitudinal direction at a relatively high speed. The tip end 5 of the elongated material 3 is located at a desired second position in the longitudinal direction.
The sensor 15 (in this embodiment, the desired sensor 15 is located at a position corresponding to the second sensor 15 provided on the upstream side of the desired first sensor 13 located at a position 2000 mm from a predetermined reference position). Second sensor 15
When detecting the tip of the long material 3, the operation of the conveyor drive device is stopped, the rotation of the conveyor roller 11 is stopped, and the long material 3 is stopped. However, the tip 5 of the long material 3 is not located at a position corresponding to the desired second sensor 13 in the longitudinal direction due to inertia, and is located on the downstream side of the desired second sensor 15 when viewed from the transport direction, in other words. It is located at a position corresponding to the desired second sensor 15 and first sensor 13 in the longitudinal direction of the elongated material 3 .

Then, the second fluid pressure cylinder 25 is appropriately operated to grip the elongated material 3 by the clamp devices 27 and 29, and the first fluid pressure cylinder 21 is appropriately operated to transfer the elongated material via the movable body 27. 3 in the transport direction at a relatively slow speed. The first stage of positioning is performed by positioning the tip end 5 of the long material 3 at a position corresponding to the desired first sensor 13 in the longitudinal direction, and the desired first sensor 13 is located at the position corresponding to the desired first sensor 13 in the longitudinal direction.
When detected, the magnetic scale 17 and the detection head 3
1, detection of the amount of movement of the moving body 23 is started. The transfer of the long material 3 via the slider 23 by the first fluid pressure cylinder device 21 is based on the set value (400 mm in this embodiment) inputted by the setting means (not shown) and the detected movement amount. are compared by a comparing means (not shown) until they become equal. By this, the final positioning of the elongated material 3 is performed.

According to this embodiment as described above, when positioning a desired machining position a predetermined distance away from the tip 5 of the long material 3 to the reference position 7, the desired first
The first stage of positioning is performed by transporting the long material 3 in the longitudinal direction until the sensor 13 detects the tip end 5 of the long material 3. Since the final positioning is performed by moving the slider 23 in the transport direction of the roller conveyor in two steps until it is detected by , the elongated material 3 can be precisely positioned.

Further, until the desired second sensor 15 detects the tip end 5 of the long material 3, the long material 3 is transported at a relatively high speed in the longitudinal direction by the conveying action of the conveyor 9, and the desired second sensor 15 is A desired first sensor 13 on the downstream side of the second sensor 15 of the elongated material 3
Until the tip 5 of the long material 3 is detected, the first fluid cylinder device 21 transfers the long material 3 at a relatively slow speed in the longitudinal direction via the slider 23 until the first stage of the long material 3 is detected. Since positioning is performed, the first stage positioning of the elongated material 3 can be performed accurately, and as a result, the final positioning can also be performed accurately.

After the desired second sensor 15 detects the tip 5 of the long material 3, the long material 3 is transported at a relatively slow speed, so the inertia of the long material 3 affects the positioning accuracy. is relatively small.

Furthermore, after the final positioning of the long material 3, the conveying action of the conveyor 9, the first cylinder device 2
Since the long material 3 that has been positioned for the first time can be transported in the longitudinal direction through the transfer action of 1, a series of processing positions appropriately positioned from the tip 5 of the long material 3 can be sequentially set as a reference. It can be positioned at position 7.

It should be noted that the present invention is not limited to the description of the embodiments described above, and can be implemented in various other forms by making appropriate changes.

As can be understood from the above description of the embodiments, according to the present invention, when positioning a desired processing position that is a predetermined length away from the end of a long material as a reference position, The first stage of positioning is performed by transporting the long material in the longitudinal direction until the sensor detects the end of the long material, and until the desired movement amount of the slider is detected by the movement amount detection device.
Since the final positioning of the long material is carried out by moving the slider in the transport direction of the conveyor and stepping in two steps, the long material can be precisely positioned.

Further, until the desired second sensor detects the end of the long material, the long material is transported at a relatively high speed in the longitudinal direction by the conveying action of the conveyor, and the desired second sensor is moved at a relatively high speed in the longitudinal direction until the desired second sensor detects the end of the long material. The transport action of the reciprocating actuator causes the elongated material to be transported longitudinally at a relatively slow speed through the slider until a desired first sensor downstream of the second sensor detects the end of the elongated material. Since the first stage positioning of the long material is carried out, the first stage positioning of the long material can be performed accurately, and as a result, the final positioning can also be performed precisely.

After the desired second sensor detects the end of the long material, the long material is being transported at a relatively slow speed, so the influence of the inertia of the long material on the positioning accuracy is relatively small. It is something.

Furthermore, after the final positioning, the long material that has been positioned for the first time can be transported again in the longitudinal direction through the conveyor's transfer action and the reciprocating motion device's transfer action. A series of machining positions located at appropriate intervals from the end of the machine can be sequentially positioned at a reference position.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the apparatus of this embodiment. FIG. 2 is a side view of FIG. 1. FIG. 3 is an explanatory diagram of the operation. 3... Long material, 9... Conveyor, 7... Reference position, 13... First sensor, 15... Second sensor,
23...Slider, 27, 29...Clamp device, 21...First fluid pressure cylinder device, 17...
Magnetic scale, 31...detection head.

Claims (1)

[Scope of utility model registration request] A conveyor 9 for transporting the long material 3 in the longitudinal direction at a relatively high speed is provided, and a plurality of first sensors 13 are provided at appropriate intervals from a predetermined reference position 7 in the transport direction of the conveyor 9. A second sensor 15 is disposed upstream of each first sensor 13 when viewed from the conveying direction of the conveyor 9, and is arranged to stop the conveying action of the conveyor 9 when the end portion 5 of the long material 3 is detected. A slider 23 provided to be reciprocally movable in the transfer direction of 9 is provided with clamp devices 27 and 29 that can freely grip the long material 3, and a reciprocating motion device for reciprocating the slider 23 at a relatively slow speed. 21, at least each of the first
movement amount detection devices 17 and 3 that detect the movement amount of the slider 23 over the range of the interval between the sensors 13;
1, and when the first sensor 13 detects the end 5 of the long material 3, the movement amount detection device 17,
A positioning device for a long material, characterized in that 31 starts detecting the amount of movement of the slider 23.