JP2648545B2 - Work transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work transfer apparatus, and more particularly to a work transfer apparatus capable of automatically transferring works one by one to a work table connected to a processing machine.

[0002]

2. Description of the Related Art Conventionally, a work table for carrying a long work such as a shaped steel into a processing machine has been used by an operator to transfer a work using a crane or a hoist as a work transfer device. In general, a work is transferred by a human operator.

[0003]

However, such a conventional technique has the following problems.
In other words, loading with a crane or hoist takes time and is inefficient, and when using an overhead crane or the like, it is often shared with other machines and easily affected by other processes, so it is even less efficient. Become.

[0004] Further, carrying in by human power is dangerous and requires a large number of workers. In particular, in the case of a long steel material, the weight becomes large, so that it is impossible to transfer the work manually.

[0005] An object of the present invention has been made in view of such a conventional technique, and is a work transfer capable of automatically transferring a plurality of works one by one to a work table connected to a processing machine. It is to provide a device.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, the present invention provides a method for supporting a plurality of works in parallel in the work transfer direction and capable of transferring the works from one end to the other end. 1 conveyor and a second conveyor capable of transferring the work transferred from the first conveyor in the same direction,
In a work transfer device in which the other end of the first conveyor and one end of the second conveyor are overlapped in a direction orthogonal to the transfer direction of the work, an area where the first conveyor and the second conveyor overlap is provided. A disc-shaped cam that projects slightly above the pass line of the first conveyor and interlocks with the second conveyor; and a stopper provided on a stopper for temporarily stopping a work riding on the cam. A sensor for detecting that the workpiece abuts is provided in the stopper portion, and a sensor for detecting that the workpiece abuts is detected by the sensor. Sometimes, the first conveyor is stopped, the stopper is lowered, and the second conveyor is operated.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 7 shows a work transfer device 1 according to the present invention.
Is shown a long section steel processing apparatus 3 equipped with. In the long steel machining apparatus 3, a long work table 5 for carrying a long work W is provided extending in the left-right direction in the figure, and a work W is provided at a right end of the work table 5 in the figure.
There is provided a long processing machine 7 for processing.

The long working machine 7 is provided with flange piercing presses 9 and 11 for making holes in a flange of a workpiece W which is a shaped steel.
, A marking press 13, a web piercing press 15 for punching a web of the work W, and a cutting press 17 for cutting the work W. Here, the flange piercing presses 9, 11, the marking press 13, the web piercing press 15, and the cutting press 17 are all commonly used, and a detailed description thereof will be omitted.

In the vicinity of the left end of the work table 5, there is provided a remaining material conveyor 19 for carrying out the remaining material of the cut work W. A reference block 21 is provided in the vicinity of the right end of the work table 5 in front of the long processing machine 7 (left side in the figure) so as to be vertically movable. The reference block 21 protrudes upward from the work table 5 to set the work W at a predetermined position when the work W is set. However, when the work W is carried in, the reference block 21 is sunk downward so as not to contact the work W. .

A plurality of rollers 23 are rotatably provided in a horizontal plane on a portion of the work table 5 on which the work W is placed, and support the work W so as to be able to be conveyed in a loading direction (right direction in the drawing). It has become. Referring also to FIG. 1, a plurality of work lifters 25 are provided at predetermined intervals between the rollers 23. For example, a drive device such as a hydraulic cylinder 27 is used to move the work lifters 25 from a position lower than the upper surface of the rollers 23 It can be moved up and down to a high position.

In the vicinity of the lower end of the roller 23 in the figure, a number of reference rollers 29 serving as a reference for the placement position of the work W are provided at predetermined intervals so as to be rotatable in a vertical plane. A plurality of side clampers 31 are provided at predetermined intervals to press the work W against the reference roller 29. Among the side clampers 31, at least the side clamper 31A disposed at the foremost side (right side in the drawing) in the carrying-in direction does not rotate, and is pressed in the carrying-in direction of the work W while the work W is pressed against the reference roller 29. Movement can be prevented. The other side clamper 31 is rotatable to guide the work W movably.

Along the work table 5, a carriage 37 having a rack 33 and two guide rails 35 in parallel is provided on the upper side in FIG. The carriage 37 is provided with a work clamper 39.
The work clamper 39 is self-propelled along the guide rails 35 by a servomotor 43 having a pinion engaged with the rack 33 while the work W is clamped by the clamp arm 41.

On the other hand, a plurality of work transfer devices 1 for transferring the work W to the work table 5 are provided on the near side (lower side in FIG. 7) of the work table 5. Referring to FIG. 2 and FIG. 3, a plurality of legs 45,
Above 45, a first frame 49 having a pair of channel steels 47, 47 facing each other, and a second frame comprising a pair of smaller channel steels 51, 51 provided on the right side of the first frame 49. 53 is provided.

Referring to FIGS. 1, 3 to 5, the pair of channel steels 47, 47 at the left end of the first frame 49 are shown.
Between the first left sprocket 55L and the left shaft 57
L, the first frame 49
Similarly, a first right sprocket 55R is provided on the central shaft 57C at the right end of the center shaft 57C. A first chain 59 is wound between the first left sprocket 55L and the first right sprocket 55R. The first right sprocket 55R is fixed to the central shaft 57C by a key 61. When a driving device (not shown) rotates the central shaft 57C, the first right sprocket 55R is rotated with the rotation.
R also rotates to run the first chain 59.

On the right side of the first frame 49, a small second frame 53 is provided offset. A second left sprocket 63L smaller than the first right sprocket 55R is mounted on the disc-shaped cam 65 between the pair of channel steels 51 at the left end of the second frame 53. A bearing 67 is provided rotatably on the central shaft 57C. Second frame 53
A second right sprocket 63R is fixed to the right shaft 57R at the right end of the right sprocket 63R. A second chain 69 is wound between the second left sprocket 63L and the second right sprocket 63R.

As is apparent from the above configuration, FIG. 3 shows a part of the end of the first conveyor provided with the first chain 59 and a part of the start of the second conveyor provided with the second chain 69 in FIG. As shown, the configuration is such that the layers overlap in a direction orthogonal to the transport direction. The cam 65 is disposed in the overlapping area, and the upper portion of the cam 65 slightly protrudes from the pass line of the first conveyor (the upper portion of the first chain 59), as is apparent from FIG. is there.

The second chain 69 is driven by a driving device (not shown) rotating the right shaft 57R to rotate the second right sprocket 63R, and is slightly higher than the upper surface of the roller 23 of the work table 5. The work lifter 25 is provided at a high position and at a height position substantially equal to the height position at which the work lifter 25 has risen.

The first frame 49 has a pusher cylinder 71 therein. The pusher cylinder 71 moves with respect to the cylinder rod 73, and has a rod-shaped pusher 75 that is long in the left-right direction in the figure. The upper end of the pusher 75 moves left and right along the guide 77 at a position slightly lower than the upper surface of the first chain 59 and slightly higher than the upper surface of the second chain 69. Referring to FIG. 6, a first stopper 79 is provided on the right side of the central shaft 57C in the second frame 53, and a second stopper 81 is provided on the right side of the right shaft 57R. The first stopper 79 is provided with a first cylinder 83. The inverted L-shaped stopper 87 attached to the piston rod 85 of the first cylinder 83 is positioned lower than the upper surface of the second chain 69. From above to a position higher than the upper surface of the first chain 59. A first sensor 8 for detecting a workpiece W to be contacted is provided at the tip of the stopper portion 87.
9 is provided and connected to a control device (not shown). The second stopper 81 is provided with a second cylinder 91, and the second cylinder 91 is provided with an inverted L-shaped stopper portion 9 attached to the piston rod 93 thereof.
5 is moved up and down from a position lower than the upper surface of the second chain 69 to a position higher than the upper surface of the second chain 69. The workpiece W that comes into contact with the tip of the stopper 95 also
Is provided, and is connected to a control device (not shown).

Next, the operation based on the above configuration will be described. Here, the plurality of work transfer devices 1 are all controlled to perform the same movement in synchronization.

First, a plurality of long works W to be used for processing are placed side by side in the transfer direction on the first chain 59 of the work transfer device 1, and the first stopper 79 and the second stopper 81 are raised. . The work lifter 25 is stopped at the raised position.

Then, the central shaft 57C is rotationally driven by a driving device (not shown) to cause the first chain 59 to run, thereby moving the entire work W to the work table 5 side (right side in the figure). The work W closest to the work table 5 is a cam 6 slightly projecting from the first chain 59.
When the vehicle stops on the first sensor 79 of the first stopper 79 in the mode of riding on the fifth device, the driving device is stopped.

Subsequently, the first cylinder 83 is operated to lower the first stopper 79, and the right shaft 57R is rotated by a driving device (not shown) so that the second chain 69 runs. As the second chain 69 travels, the second left sprocket 63L rotates, and the cam 65 also rotates at the same time. Since the work W that is stopped in contact with the first stopper 79 is on the cam 65, only one work W moves onto the second chain 69 as the cam 65 rotates.

The work W moves to the right by the travel of the second chain 69, and comes into contact with the second stopper 81 and stops.
When the second sensor 97 detects that the work W has contacted, the drive device is stopped to stop the rotation of the right shaft 57R, the work W is stopped, and the second stopper 81 is lowered by the second cylinder 91.

Then, the pusher cylinder 71 is driven to move the pusher 75 to the right in the drawing, and the work W stopped on the second chain 69 is moved to the work table 5.
And is placed on the work lifter 25.

When the work lifter 25 is lowered, the work W
Is placed on the roller 23, the side clamper 31 is moved to the reference roller 29 side (the lower side in the figure), and the work W is brought into contact with the reference roller 29 to complete the transfer of the work W.

As described above, since the two chains are separated by the first chain 59 and the second chain 69, the workpieces W are automatically taken out one by one from the plurality of placed workpieces W and transferred. can do. Then, the work W pushed out of the work table 5 by the pusher 75 is once received by the work lifter 25, and then is placed on the rollers 23 of the work table 5 by lowering the work lifter 25, so that the work W can be safely and securely performed. Can be transported.

Further, the work W placed on the roller 23 of the work table 5 is pressed by the side clamper 31 against the reference roller 29, so that the work W is transferred to a predetermined position.

The present invention is not limited to the above embodiment, but can be implemented with appropriate modifications.

[0030]

As can be understood from the above description of the embodiments, in short, the present invention is capable of supporting a plurality of works (W) in parallel in the work transfer direction and supporting the works (W) from one end to the other end. W) and a first conveyor capable of transferring
A second conveyor capable of transferring the work (W) transferred from the conveyor in the same direction, and connecting the other end of the first conveyor and one end of the second conveyor with respect to the transfer direction of the work (W). In a workpiece transfer device that is overlapped in a direction perpendicular to the first conveyor, a disc slightly protruding above a pass line of the first conveyor and interlocking with the second conveyor in a region where the first conveyor and the second conveyor overlap. Cam (6
5), and a stopper (87) provided on a stopper (79) for temporarily stopping the work (W) riding on the cam (65) is provided so as to be able to protrude and retract from the pass line of the first conveyor. In addition, a sensor (89) for detecting that the work (W) has come into contact with the stopper (87) is provided on the stopper (87), and the sensor (89) detects that the work (W) has come into contact with the stopper (87). 89), the first conveyor is stopped, the stopper (87) is lowered, and the second conveyor is operated. As is clear from the above configuration, in the present invention, the first conveyor and the second conveyor
A disc-shaped cam 65 whose upper part slightly protrudes from the pass line of the first conveyor is provided in a region where the conveyor W overlaps with the first conveyor, and a stopper for temporarily stopping the work W riding on the cam 65 is provided. A stopper 87 provided in 79 is provided so as to be able to protrude and retract with respect to the pass line of the first conveyor. When the sensor 89 detects that the work W has contacted the stopper 87, the first conveyor is stopped. And the stopper 87 is lowered, and the second
This is a configuration for operating the conveyor.

That is, according to the present invention, when the workpiece W is transferred by the first conveyor and rides on the disc-shaped cam 65, the workpiece W comes into contact with the stopper 87 and is detected by the sensor 89, so that the first conveyor is stopped. In addition, the stopper 87 is lowered, and the second conveyor is operated.

Therefore, when the workpiece W is transferred from the first conveyor to the second conveyor, even if the workpieces W are placed on the first conveyor in a state where they are in contact with each other, the workpiece W Only the workpieces W are transported onto the second conveyor, and the workpieces W can be surely separated and transported one by one.

That is, when the workpiece W rides on the cam 65, the workpiece W comes into contact with the stopper 79 to prevent the workpiece W from being transported.
9, the first conveyor is stopped.
The plurality of works W on the conveyor are not transferred onto the second conveyor and do not rise on the first conveyor, and can be separated and transferred one by one without fail.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a work transfer device and a work table according to the present invention.

FIG. 2 is a schematic side view showing a frame of the work transfer device.

FIG. 3 is a structural view showing a joint between a first frame and a second frame.

FIG. 4 is a front view of a partially broken view as viewed from an IV direction in FIG. 3;

FIG. 5 is a side view as viewed from a direction V in FIG. 3;

FIG. 6 is a sectional view taken along line VI-VI in FIG.

FIG. 7 is a plan view of a long steel machining apparatus 3 equipped with the work transfer device 1 according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Work transfer apparatus 5 Work table 7 Multi-tasking machine (processing machine) 25 Work lifter 59 First chain (first conveyor) 65 Cam (work moving means) 69 Second chain (second conveyor) 75 Pusher W Work

Claims (1)

(57) [Claims] 1. A plurality of works (W) can be supported in parallel in the work transfer direction and can be supported from one end to the other end.
Conveyor which can transfer the workpiece (W) transferred from the first conveyor in the same direction, and the other end of the first conveyor and one end of the second conveyor In a direction perpendicular to the transfer direction of the workpiece (W), the upper part of the first conveyor and the pass line of the first conveyor are slightly overlapped with each other in an area where the first conveyor and the second conveyor are overlapped. And the second
A disc-shaped cam (65) interlocked with the conveyor is provided, and a stopper (87) provided on a stopper (79) for temporarily stopping the work (W) riding on the cam (65) is provided on the first conveyor. And a sensor (89) for detecting the contact of the work (W) is provided on the stopper portion (87), and the work (W) is provided on the stopper portion (87). ) When the contact is detected by the sensor (89), the first conveyor is stopped, the stopper portion (87) is lowered, and the second conveyor is operated. Work transfer device.