JPH11240611A - Automatic shaft supplying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically supply each shaft to a precise location by arranging a stopper which completely stops a shaft supplied to a sloped surface, then makes corrections to the shaft location, then releases the stopper for gently supplying the shaft downward. SOLUTION: An automatic shaft supplying device comprises a tray sloped towards a prescribed direction to which shafts S to be supplied are loaded, a slit 12 formed at the lowermost end of the tray, a shaft selecting device part ST which includes a lift claw 2 which moves passing the slit 12 in an up-down direction, a slope 3 to receive shafts S which the lift claw 2 raises to its upper end, a stopper 4 for completely stopping and then releasing the shafts S at a prescribed location of the slope 3, and a location decision device part PD equipped with a shaft location correction claw which decides location of the shafts S at the specified location.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic shaft feeder,
More particularly, the present invention relates to a shaft automatic supply device capable of automatically supplying shafts to accurate positions one by one.

[0002]

2. Description of the Related Art In some cases, a manufactured shaft is ground for finishing, or is set on a quality control device such as a vibration measuring device or a perfect circle measuring device for product quality control. In such a case, it is necessary to supply each of the target shafts to the device one by one, but at present, it is conventionally performed manually by a human. However, such work is time-consuming,
Further, there is a disadvantage that the cost is increased.

The present invention has been made in view of the above-described problems, and has as its object to provide an automatic shaft feeding apparatus capable of automatically feeding shafts one by one to an accurate position.

[0004]

In order to solve the above-mentioned problems, an automatic shaft feeding apparatus according to the present invention comprises a tray having an inclination in a predetermined direction and a tray into which a shaft to be fed is loaded, A slit formed at the lowermost end of the tray, and a shaft selecting device portion including a lift claw that moves vertically through the slit, and is provided at an upper portion of the shaft selecting device portion. A slope for receiving the moved shaft, a positioning device portion having a stopper for stopping and releasing the shaft at a predetermined position of the slope, and a shaft position correction claw for positioning the shaft at the predetermined position. It is characterized by having.

[0005] According to the present invention, a stopper for raising the shaft by one lift by the lift claw that moves vertically through the slit and supplies the shaft to the upper slope surface and stops the shaft supplied to the slope surface. After the shaft is stopped, the position of the shaft is corrected, the stopper is opened, and the supply is performed gently downward. Therefore, there is an advantage that the shafts can be automatically supplied one by one to an accurate position.

[0006]

FIG. 1 is a schematic side view of an automatic shaft feeder according to the present invention. As is clear from FIG. 1, a shaft selecting unit ST has a box-like shape for storing a plurality of shafts s. It has a tray 1, and the bottom surface of the tray 1 is formed with an inclination 11 so that the shaft s moves downward. At the lower end of the slope 11, a slit 12 is formed in the width direction.

[0007] The shaft selecting device ST is provided with the slit 1
2 that has a lift claw 2 that moves through the gap of 2,
The shaft claw 2 is vertically movable by a lift claw cylinder 21. The shaft claw 2 slides along the lower end surface 13 of the tray 1. The tip of the shaft claw 2 has a slope 22 in the same direction as the slope 11 of the bottom surface of the tray 1.
Thereby, the shaft at the lower end of the tray 1 is selected and can be moved upward. That is, the folded lowermost shaft s is formed by the inclined portion 22 and the lower end surface 13 of the tray 1 described above.
While the upper shaft falls into the tray 1 while moving up. For this reason, only one shaft s can be moved upward.

The positioning device PD for receiving the shaft s moved upward is provided at the upper end of the shaft selecting device ST. And as shown in FIG. 2, it has a slope 3, and the slope 3
The inclination is the same as the inclination 11 of FIG. The slope 3 has a plurality of bridges 31 bridged in the traveling direction of the shaft, and a hook-shaped stopper 4 projects into a gap 32 formed by the bridge 31 to stand the shaft s that rises and rolls on the slope surface 3. It has become. Further, the stopper 4 is rotatable about a rotation shaft 41, and is rotated to move below the slope surface 3, open the stationary shaft s, and roll downward.

A shaft position correcting claw 5 for correcting the position of the stationary shaft s by the stopper 4 is movable in the width direction of the slope surface 3 with respect to the moving shaft 51. The shaft is positioned by pushing in the other direction to abut against a stopper surface (not shown) provided upright at the other end. The shaft position correcting claw 5 is also movable in the vertical direction, and after positioning the shaft s, moves up to open the shaft s.

The shaft s positioned by the positioning device P is released from the stopper 4 so that the slope 3
And stored in the stocker 6 (see FIGS. 1 to 3). The stocker 6 has a space 61 having a substantially triangular cross section.
The shaft s is stationary in the triangular space 61. In this embodiment, a clipping device 7 is provided. The clipping device 7 has two openable / closable pawls 71 that can be opened and closed, and a shaft 72 that moves the open / closed pawls 71 in a vertical direction and a moving direction of a shaft s. Axis 7 to move
3 and a shaft 74 that moves in the width direction of the stopper surface 3. The opening 62 formed in the width direction of the stocker 6 is for the opening and closing claws 71 of the clipping device 7 to enter and exit, and is provided at a predetermined interval.

For this reason, the clipping device 7 can be moved with the opening / closing pawl 71 sandwiching the shaft s in the opening 62.

A shaft transport unit 8 is provided in the direction in which the shaft s of the stocker 6 moves. The transfer device 8 has a transfer stocker 81 having the same shape as the stocker 6, and the transfer stocker 8 has a triangular gap 82 in which a vertex is cut out more than the stocker 6. The gap formed by the notch is wide enough to allow the shaft to pass therethrough. Then, the structure is such that a conveyor 83 is formed below the cutout portion. Reference numeral 84 denotes an opening through which the opening / closing claws 71 of the clipping device 7 enter and exit, and are provided at predetermined intervals in this embodiment. This conveyor 83 conveys the shaft s to the next step.

[0013]

Next, the operation of the present invention will be described. 4 and 5 are views for explaining the operation of the automatic shaft feeder according to the present invention. As is clear from these figures, the plurality of shafts s stored in the tray 1 move downward along the slope 11 of the bottom surface and come into contact with the lower end surface 13 of the tray 1. At this time, the lift claw 2 is located below the slit 12. In such a state, lift claw cylinder 2
When the lift claw 2 is raised by operating the lift claw 1, the lift claw 2 passes through the slit 12, and the lowermost shaft s is sandwiched by the slope 22 and the lower end surface 13 at the tip end thereof.
To rise. The shaft s rises along the lower end surface 13 and is released to the slope 3 of the positioning device PD having an upper end portion provided at a discontinuous portion of the lower end surface 13.

The shaft s rolls on this slope 3,
Stopped by a stopper 4 projecting to a predetermined position,
Stand still. When the shaft s is stationary, the shaft position correcting claw 5 descends, moves further in the width direction and abuts one end of the shaft s, and is further pushed in the width direction to push the shaft s.
Is moved in the width direction, and after the other end of the shaft s comes into contact with the stopper surface, the shaft position correcting claw 5 is raised to put the shaft s in a free state.

After the positioning of the shaft s is performed in this manner, the stopper 4 is rotated about the rotation shaft 41 so that the gap 3
When retracted from 2, the shaft s rolls the slope 3 again. A stocker 6 is provided at the lower end of the slope 3, and the rolled down shaft s is held by the gap 61 of the stocker 6.

The shaft s thus held by the stocker 6 is then sandwiched by the opening / closing claws 71 of the clipping device 7, ascends about the shaft 72, and is conveyed about the shaft 73 in the moving direction of the shaft. Next, the opening / closing claw 71 of the clipping device 7 is lowered again to set the shaft s in the gap 82 of the transport stocker 81 of the shaft transport device unit 8. The shaft s set in this way is transported to the next step by the conveyor 83.

In this embodiment, the clipping device 7
Is movable in the width direction by a shaft 74. For this reason, it is possible to automatically supply the shafts s of various lengths by moving the clipping device 7 in the width direction (in this case, the opening 62 of the stocker 6 and the opening of the transport stocker 8). The portions 84 are provided at predetermined intervals or the width of the opening 84 is increased.)

[0018]

As described above, according to the automatic shaft feeding apparatus of the present invention, the shaft is lifted up by one by the lift claw that moves vertically through the slit, and the shaft is fed to the upper slope surface. A stopper for stopping the shaft supplied to the slope surface is provided, and after stopping the shaft, the position of the shaft is corrected, and the stopper is opened to supply the shaft slowly downward. This has the advantage that shafts of various lengths can be automatically supplied one by one to the correct position.

[Brief description of the drawings]

FIG. 1 is a side view of an automatic shaft feeding apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view of a positioning device.

FIG. 3 is a plan view of the embodiment.

FIG. 4 is a schematic diagram for explaining the operation of the present invention.

FIG. 5 is a schematic diagram for explaining the operation of the present invention.

DESCRIPTION OF SYMBOLS 1 Tray 11 Slope 12 Slit 13 Lower end surface 2 Lift claw 21 Lift claw cylinder 22 Incline 3 Slope 31 Bridge 32 Gap 4 Stopper 41 Rotation axis 5 Shaft position correction claw 6 Stocker 7 Clipping device section 8 Shaft conveying device Section ST shaft selection device section PD positioning device section

Claims (7)

[Claims] 1. A tray that is inclined in a predetermined direction and into which a shaft to be supplied is loaded, a slit formed at the lowermost end of the tray, and a lift claw that moves vertically through the slit. A shaft selecting device portion, and a slope provided at an upper portion of the shaft selecting device portion for receiving the shaft moved to the upper end by the lifting of the lift claw; and stopping and releasing the shaft at a predetermined position of the slope. And a positioning device having a shaft position correcting claw for positioning the shaft at the predetermined position. 2. The apparatus according to claim 1, wherein the shaft selecting device has a lift claw having a tip end inclined in a moving direction of the shaft, and the shaft is held by the lower end surface of the tray and the inclination. The automatic shaft feeder according to claim 1, wherein: 3. The automatic shaft feeder according to claim 1, wherein the positioning device has a slope composed of a plurality of bridges, and the stopper projects and retracts from a gap between the bridges. apparatus. 4. The positioning device according to claim 1, wherein the shaft position correcting claw is configured to push one end of the shaft in a width direction to abut the other shaft end against a stopper surface to perform positioning. Item 4. The automatic shaft feeding device according to any one of Items 1 to 3. 5. A stocker having a gap having a triangular cross section at a lower end of the slope, and a shaft that has rolled down the slope is held in the gap. The automatic shaft feeding device according to the above. 6. The shaft held by the stocker can be lifted and moved by a clipping device that sandwiches the shaft, and the clipping device conveys the lifted shaft to a shaft transfer device. The automatic shaft feeding device according to claim 5, wherein 7. The shaft transport device section has a transport stocker having a gap having a triangular cross section having a notch at a vertex and a conveyor provided at a lower portion of the notch, and is transported from the stocker by a clipping device section, 7. The automatic shaft feeding device according to claim 6, wherein the shaft set in the transport stocker can be transported in a predetermined direction.