JP2801910B1 - Long material transfer device - Google Patents

Abstract

When a carriage is advanced and a rear end of a long material on a roller conveyor is clamped by a clamper, a positional relationship between the carriage and the rear end of the long material is always constant. A transport device is provided. The stopper 43 is capable of protruding and retracting so as to abut on a tip end of a long material W supported and conveyed by a roller conveyor 17.
And a carriage 49 having a clamper capable of reciprocating along the roller conveyor 17 and capable of clamping the rear end of the long material W. A position detection device for detecting the movement position of the long member 49 is provided, and the carriage 49 abuts on the rear end of the long member W, and the leading end of the long member W contacts the stopper 43. The clamper clamps the rear end of the long material W when detected by the contact sensor 59 provided on the carriage 49.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for transporting a long material to a processing machine for processing an appropriate long material such as a round bar or a square material.

[0002]

2. Description of the Related Art A transfer device for transferring a long material such as a round bar to a processing machine includes a roller conveyor rotatably provided with a plurality of appropriately shaped rollers for supporting the long material,
And a carriage having a clamper capable of reciprocating along the roller conveyor and capable of clamping a long material.

[0003]

In the conventional long material conveying apparatus, when a rear end of the long material is clamped by a clamper provided on a carriage, a clamping error occurs, and the rear end of the carriage and the long material is caught. Is not always constant. Therefore, the long material is moved by the carriage, and the position is detected and detected by the position detecting device provided on the carriage.
When an appropriate processing is performed at an appropriate position of the long material, an error may occur in a processing position from a front end or a rear end of the long material.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, the invention according to the first aspect is directed to a roller conveyer rotatably provided with a plurality of rollers for supporting a long material, It has a stopper that can come and go so as to abut on the front end of the long material supported and conveyed by the conveyor, and a clamper that can reciprocate along the roller conveyor and can clamp the rear end of the long material. A long material transporting device including a carriage, wherein the carriage is provided with a position detecting device for detecting a moving position of the carriage, and the carriage comes into contact with a rear end of the long material, When the contact sensor provided on the carriage detects that the leading end of the long member has contacted the stopper, the rear end of the long member is clamped by the clamper. That.

According to a second aspect of the present invention, in the first aspect of the present invention, when the carriage moves while holding the rear end portion of the long member, the first sensor provided at a predetermined position moves the long member. When the leading end of the long member is detected, the position of the long member in the front-rear direction is detected by a position detecting device provided on the carriage.

[0006]

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

Referring to FIGS. 1 and 2, a circular saw machine 1 as an example of a processing machine for appropriately processing a long material is provided with a cutting section 3, and the cutting section 3 is driven to rotate. A circular saw blade 5 that can be moved up and down is provided, and a main body vice device 7 that holds the long material W is provided on the rear side (the right side in FIGS. 1 and 2) of the circular saw blade 5. The main body vice device 7
Is provided with a vise bed 9 and a pair of main body vises 11 and 13 provided on both right and left sides of the vise bed 9. One main body vise 11 approaches the other main body vise 13 by operating a vise cylinder 15. It can be moved in the left and right direction (in FIG. 1, the front and back direction toward the paper surface, and in FIG. 2, the up and down direction).

Here, a first sensor S _{1 such} as a known photoelectric sensor having a light projecting unit and a light receiving unit is provided at an appropriate position of the main body vice device 7, and the first sensor S ₁ is long. It has a function of detecting that the front end of the material W is located at a predetermined first proximity position close to the cutting position in the front-rear direction. The first sensor S ₁ in the present embodiment is positioned in the first position near the predetermined in the longitudinal direction.

A roller conveyor 17 is provided at the rear of the circular saw 1 so as to extend in the transport direction (front-rear direction). The roller conveyor 17 has a large number of grooved rollers 19 for supporting the long material W. I have. The multiple grooved rollers 19 can be driven to rotate in the transport direction by driving a roller drive motor 21. The multiple grooved rollers 19 are synchronized by the operation of an interlocking mechanism (not shown) including a chain, a sprocket, and the like. It is driven to rotate. In addition, the roller 19 and the roller drive motor 21 can be connected and disconnected in an interlocking connection state through appropriate means.

Between the circular saw machine 1 and the roller conveyor 17, a transfer vise device 23 for transferring the long material W in the front-rear direction is provided movably in the front-rear direction.

More specifically, a pair of guide bars 25 extending in the front-rear direction is provided between the circular saw 1 and the roller conveyor 17.
Are provided through appropriate means, and a pair of guide bars 25 are provided.
Is provided with a vise bed 27 constituting a part of the transfer vise device 23 so as to be movable in the front-rear direction. In order to move the vise bed 27 in the front-rear direction, a transfer cylinder 31 having a piston rod 29 movable in the front-rear direction is provided at an appropriate position, and the piston rod 29 is connected to the vise bed 27. . Vise bed 2 above
7 includes a pair of conveying vises 33 and 35 for holding the long material W.
Is provided, and one of the transfer vise 33 is movable in the left and right direction approaching and moving away from the other transfer vise 35 by the operation of the vise cylinder 37. Here, a control valve 39 (see FIG. 3) is connected to the transfer cylinder 31, and the moving speed of the vise bed 27 can be controlled by appropriately controlling the control valve 39. In order to move the vise bed 27 in the front-rear direction, a servomotor, a ball screw, or the like may be used instead of using the transport cylinder 31.

A second sensor for detecting that the front end of the long material W is located at a predetermined second proximity position in the front-rear direction close to the transfer vise device 23 at an appropriate position of the transfer vise device 23. S ₂ is provided. Note the second sensor S ₂ is a first photoelectric sensor similar format as the sensor S _1.

Next, a description will be given of a long material transfer device for transferring the long material W to the circular sawing machine 1 as an example of a processing machine. This transfer device automatically adjusts the length of the long material W. It has a length measuring device 41 capable of performing a measurement.

A stopper 43 is provided at an appropriate position of the roller conveyor 17 so as to be in contact with the front end of the long material W. The stopper 43 can be moved up and down with respect to the transport support height position (the transport line support height position) by the operation of the elevating cylinder 45. Note that the stopper 43 may be provided at another appropriate position on the transport line instead of being provided at the lower position of the roller conveyor 17.

A pair of guide members 47 extending in the front-rear direction are provided above the roller conveyor 17 via appropriate means, and the guide members 47 can be brought into contact with the rear end of the long material W. And a carriage 49 capable of holding the rear end.
Are provided movably in the front-rear direction. Carry 4 above
9 to move the roller 9 forward and backward.
A rack member 51 extending in the front-rear direction is provided at an upper position of the pinion 55 via appropriate means. The pinion 55 meshes with the rack member 51 and is interlocked with the drive motor 53.
Are provided in the above-mentioned carriage 49. The drive motor 53 and the pinion 55 can be disconnected and connected in an interlocking connection state via a clutch device (not shown). As a position detecting device that detects the position of the carriage 49 in the front-rear direction (transport direction), the carriage 49 includes an encoder 57 that detects the rotation speed of the pinion 55.

At an appropriate position on the front side of the carriage 49,
A contact sensor 59 such as a limit switch is provided, and the contact sensor 59 is long when the carriage 49 moves forward in a state in which the carriage 49 is in contact with the rear end of the long material W. It has a function of detecting that the front end of the material W has come into contact with the stopper 43. The contact sensor having the above function may be provided on the stopper 43.

A pair of clampers 61 and 63 for holding the rear end of the long material W are provided on the front side of the carriage 49. One clamper 61 is connected to the other clamper 63 by the operation of a clamp cylinder (not shown). It can move in the left and right directions approaching and moving away from it.

Referring to FIG. 3, a description will be given of a control means 65 for calculating the length of the long material W and controlling the transport of the long material W in a controlled manner.

The control means 65 includes a control unit 67 and a calculation unit 69
The control unit 67 includes the first sensor S ₁ , the second sensor S ₂ , the contact sensor 59, and the encoder 5.
7. The drive motors 21 and 53 and the control valve 39 are connected. The control unit 67 has an initial position L _{1 in} the front-rear direction of the carriage 49 with respect to a predetermined reference position (the cutting position in this embodiment), and a longitudinal direction of the stopper 43 with respect to the cutting position. The position L ₂ and the position L _{3 in} the front-rear direction of the first sensor S _{1 based on} the cutting position are stored.

The operation of the present embodiment will be described based on the above configuration.

The long material W is supported between the carriage 49 and the stopper 43 in the roller 19 with a large number of grooves on the roller conveyor 17 (see FIG. 4A). At this time, the carriage 49 is located at the initial position, and the stopper 43 is protruded from the transport height position by the operation of the elevating cylinder 45.

After the long material W is supported by the roller 19 with a large number of grooves, the drive motor 53 is driven to move the carriage 49 forward (to the left in FIGS. 4 and 5) to approach the long material W. Move. As a result, the carriage 49
Can be brought into contact with the rear end of the long material W. Further, by driving the drive motor 53 to move the carriage 49 in the forward direction, the long material W is moved in the forward direction while the rear end of the long material W is in contact with the carriage 49. Thus, the front end of the long material W can be brought into contact with the stopper 43 projecting in advance with respect to the transport height position (see FIG. 4B). Thereby, the long material W
Can be positioned at an appropriate position in the front-rear direction on the roller conveyor 17. The contact of the front end of the long material W with the stopper 43 is detected by the contact sensor 59.

Therefore, during the detection operation of the contact sensor 59, the rear end of the long member W contacts the carriage 49, and the front end of the long member W contacts the stopper 43. The positional relationship with the rear end of the long material W is always constant.

The front-rear direction movement position of the carriage 49 until the front end from the initial position the long material W comes into contact with the stopper 43 (moving amount) L _4, detected by the encoder 57, the detection signal, the control The data is sent to the calculation unit 65 via the unit 63. Thus, the arithmetic unit 65, first, the initial position L ₁ longitudinal cutting machining position carriage 49 relative to the said carriage 4 relative to the initial position
9 on the basis of the movement position L ₄ in the longitudinal direction of longitudinal position of the rear end portion of the long material W relative to the cutting position L
It is calculated as ₁ -L ₄ is detected. Next, the position L _{2 in} the front-rear direction of the stopper 43 with respect to the cutting processing position known in advance, in other words, the front-rear direction of the front end portion of the long material W in the front-rear direction when the stopper 43 abuts. The calculation unit 69 calculates L ₁ -L ₄ -L ₂ based on the position and the position L ₁ -L _{4 in} the front-rear direction of the rear end of the long material W based on the cutting position. Thereby, the long material W
Is measured as L ₁ -L ₄ -L ₂ .

After the front end of the long material W comes into contact with the stopper 43, the elevating cylinder 45 is operated so that the stopper 43 is immersed in the transport height position. In addition, the interlocking connection between the drive motor 53 and the pinion 55 is shut off, and the rear end of the long material W is held between the pair of clampers 61 and 63. As described above, when the rear end of the long material W contacts the carriage 49 and the front end of the long material W contacts the stopper 43, the rear end of the long material W is clamped by the clampers 61 and 63. And the rear end of the long material W is always constant.

By driving the roller drive motor 21 to rotate the plurality of grooved rollers 19 forward, the long material W is moved forward at a high speed. At this time, the carriage 49 can also move forward together with the long material W. The long material W moves forward and the front end of the long material W
That the proximity and is detected by the second sensor S ₂ (see FIG. 4 (c)), caused to stop the rotation of the large number only with each roller 19, interlocking of the grooved roller 19 and the roller driving motor 21 Cut off the connection. At this time, the long material W
Is located between the pair of transfer vise 33 and 35 in the transfer vise device 23 (see FIG. 5A).

After the rotational drive of the roller 19 with a large number of grooves is stopped, the vise cylinder 37 is operated to clamp the front end of the long material W between the pair of conveying vises 33 and 35. Then, by appropriately operating the transport cylinder 31 to move the vise bed 27 forward, the long material W and the carriage 49 can be moved forward at a medium speed. The first sensor S detects that the front end of the long material W was located at a predetermined proximity position close to the cutting position while the long material W was moving forward at a medium speed.
_When detected by _1, the position of the long material W in the front-rear direction is detected again by the encoder 57 based on this detection. That is, the position of the front end and the position of the rear end of the long material W can be detected. Here, a predetermined proximity position based on the cutting position (in this embodiment, the first sensor S ₁
To position the) are known as L _3, L ₃ from the time of detecting the leading edge in order to take out the product WA of the length L _a
If it is detected plus the length of the L _a is by the encoder 57, it is capable of positioning the long material W in the longitudinal direction of the predetermined position.

After the detection by the encoder 57, L ₃ + L _a −α (α is an appropriate value) is detected by the encoder 57 due to the forward movement of the long material W at a medium speed. The control valve 39 is appropriately controlled via the control section 67 to move the long material W forward at a low speed.
Then, when the value of L ₃ + L _a is detected by the encoder, the transport operation of the long material W activates appropriately conveying cylinder 31 so as to stop. Thereby, the long material W
Can be positioned at a predetermined position in the front-rear direction (see FIG. 5B).

After the long material W is positioned at a predetermined position in the front-rear direction, the circular saw blade 5 is lowered while being rotated, thereby performing a desired cutting process on the long material W. We can, in which can be taken out product WA of the length L _a from the long material W (see FIG. 5 (c)).

According to this embodiment as described above, the long material W
Abuts the stopper 43 at the front end and the carriage 49 at the rear end. When the contact is detected by the abutment sensor 59, the rear end of the long material W is clamped by the carriage 49. , So that the rear end of the long material W is in contact with a predetermined position of the carriage 49,
The positional relationship between the carriage 49 and the rear end of the long material W is always constant.

Therefore, the rear end of the long material W can be accurately positioned by the carriage 49, and the positional relationship between the processing position and the rear end when appropriate processing is performed in the vicinity of the rear end. It is exactly kept.

When the carriage 49 moves while holding the rear end portion of the long material W, the front end of the long material W is detected by a sensor provided at a predetermined position.
Since the position of the long material is detected in conjunction with the detection of the position detecting device provided in 9, the positions of the front end portion and the rear end portion can be accurately detected.

[0033]

As will be understood from the above description of the embodiment, according to the present invention, the carriage is advanced from a predetermined position, and the rear end of the long material on the roller conveyor is clamped by the clamper. When the rear end of the long material is securely brought into contact with the specified position of the carriage, the rear end can be clamped by the clamper, and the positional relationship between the carriage and the rear end of the long material is always kept constant. it can.

Further, since the front end of the long material is detected at a predetermined position after the rear end of the long material is securely held by the clamper of the carriage, the positions of the front end and the rear end of the long material are detected. This makes it possible to process the front end reference and the rear end reference.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a long material length measuring device.

FIG. 2 is a schematic plan view of a long material length measuring device.

FIG. 3 is a block diagram of a control unit of the embodiment.

FIG. 4 is an operation explanatory view of the present embodiment.

FIG. 5 is an operation explanatory view of the present embodiment.

[Explanation of symbols]

 7 Cutting part 41 Length measuring device 43 Stopper 49 Carriage 57 Encoder 69 Operation part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B23Q 7/05 B23Q 7/04 B23D 47/04 B23D 55/04 B23B 13/02 B23Q 17/20

Claims (2)

(57) [Claims] 1. A roller conveyor (17) rotatably provided with a plurality of rollers for supporting a long material (W), and a long material (W) supported and conveyed by the roller conveyor (17). A stopper (4
3) and a carriage (49) having a clamper capable of reciprocating along the roller conveyor (17) and clamping the rear end of the long material (W). The carriage (49) is provided with a position detecting device for detecting the movement position of the carriage (49), and the carriage (49) is in contact with the rear end of the long member (W), The carriage (4) indicates that the tip of the length member (W) has contacted the stopper (43).
9. A long material conveying device, wherein the rear end of the long material (W) is clamped by the clamper when detected by a contact sensor (59) provided in 9). 2. The invention according to claim 1, wherein the first sensor (S ₁ ) provided at a predetermined position is used when the carriage (49) moves while holding the rear end of the long material (W). When the tip of the long material (W) is detected, the position of the long material (W) in the front-rear direction is detected by a position detection device provided on the carriage (49). Long material transfer device.