JPS6243704Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a workpiece reversing device used for reversing a workpiece together with a pallet in an unmanned and automated machining factory.

Traditionally, in unmanned and automated machining factories, the workpiece machined by the machine tool is reversed to remove chips remaining on the workpiece or the pallet on which the workpiece is mounted, or during setup changes. A workpiece reversing device 1 as shown in FIGS. 1 to 3 is used when a workpiece is to be reversed. This conventional reversing device 1 includes a drum 4 whose outer peripheral portion is open so that a manipulator 2 can enter and exit the drum 4 and which is rotatably supported by a pedestal 3.
A rotary drive mechanism 5 that rotationally drives this drum 4 and stops it at a predetermined angle, a pallet mounting table 6 fixed to the drum 4 near the outer periphery inside the drum 4, and a jig 7 for fixing the workpiece are attached. The pallet loading/unloading mechanism (not shown) carries the pallets 8 from the conveying device 9 onto the pallet mounting table 6, and carries them out from the pallet placing table 6 to the conveying device 9.

By the way, this reversing device 1 has the disadvantage that the installation floor area and the space occupied are large because the entire device is large. It was a problem. This installation interval L can be shortened as shown in FIG. 4, but in this case, when the reversing device 1 is rotated, it will interfere with the conveying device 9, so the conveying device 9 should be moved to the side once, and then the reversing device 1 There is a problem in that it requires rotating operation.

The present invention provides a rotating body equipped with an annular sprocket member on a supporting portion of a frame disposed near the track of the transport vehicle, and an annular sprocket member disposed on the rear side opposite to the track of the transport vehicle. Mounted rotatably in a vertical plane parallel to the above orbit,
A pallet mounting table, which rotates in the same direction as the rotating body, is provided on the front side of the rotary body facing the orbit, with the pallet loading and unloading direction aligned in a direction orthogonal to the orbit. A hopper is provided to receive the chips that fall when the loading table is reversed, by protruding laterally on the inverted and lowering side of the pallet loading table, and a chain is wound around the annular sprocket member to transmit the rotation of the motor to the annular sprocket member. This solves the above-mentioned problems of the conventional method by hanging the machine.It collects chips accurately in the hopper, prevents chips from adhering to or getting caught in the chain or sprocket, and makes the entire device more compact. It is an object of the present invention to provide a reversing device that requires a small installation floor area and occupied space and does not interfere with a conveyance device.

Hereinafter, the present invention will be explained in detail based on the drawings.

FIGS. 5 and 6 show an embodiment of the present invention, and 20 in the figures is a conveying device. This conveyance device 20 conveys a well-known pallet 22 equipped with a jig for fixing a workpiece 21 to a predetermined position, and is configured such that an unmanned conveyance vehicle 20a automatically travels on a track 20b. The reversing device 23 of the present invention includes a pallet mounting table 24 that fixedly supports the pallet 22, a pallet loading/unloading mechanism (not shown) that carries the pallet 22 in and out of the pallet loading table 24, and a rotating mechanism that rotates the pallet loading table 24. The above-mentioned conveying device 20
It is installed on one side of the.

The pallet mounting table 24 and the pallet loading/unloading mechanism have the same basic structure as the conventional one, so a description thereof will be omitted. On the other hand, the rotation driving section 25 supports the pallet mounting table 24 and rotates it within a vertical plane perpendicular to the direction A of carrying in and out of the pallet 22, and has the following structure. In other words, there is a circular hole 2 in the center.
A pair of left and right support portions 26 equipped with 6a are attached to the pallet 2.
A cylindrical drum is formed on a pedestal 27 so as to be perpendicular to the loading/unloading direction A of 2, and the pallet mounting table 24 is attached to one end side (the front side facing the track 20b) in the hole 26a of this support part 26. A rotating body 28 having a shape is inserted therethrough. This rotating body 28 is rotatable relative to the support part 26 by a plurality of rollers 29 rotatably attached near the periphery of the hole 26a of the support part 26, and the other end side (opposite to the track 20b) An annular sprocket member 28a having teeth on the outer periphery is fixed to the rear side).
A roller chain 30 is wound around this toothed portion. This roller chain 30 also connects to the frame 2.
It is wound around a chain wheel 32 of the output shaft of a motor 31 with a reduction gear installed on the top of the pallet 7, and by operating this motor 31 with a reduction gear, the rotating body 28 and the pallet mounting table 24 are moved to unload the pallet 22. The workpiece 21 is rotated in a vertical plane perpendicular to the input direction A, and the workpiece 21 is reversed.

In the figure, 33 is a hopper for receiving the removed chips, and is provided so that the inverted lowering side (the right side in FIG. 6) of the pallet mounting table 24 projects laterally. 34 is a chip conveyor for removing the chips to a predetermined location.

Next, the operation of the present invention will be explained.

In the reversing device 23 of the present invention, when the workpiece 21 processed by the machining center is placed on the pallet 22 and transported to the reversing device 23 by the conveyor device 20, a pallet loading/unloading mechanism (not shown) is activated. The pallet 22 is pulled up to the pallet mounting table 24. Then, the clamp mechanism of the pallet mounting table 24 is operated to fix and support the pallet 22 on the pallet mounting table 24, and the motor 31 with a reduction gear is operated to rotate the rotating body 28 and therefore the pallet mounting table 24. At this time, the chips remaining on the workpiece 21 and the pallet 22 fall downward and are received by the hopper 33, and then transferred to the chip conveyor 34.
is sent to a designated location. Furthermore, when the removal of chips is completed, the motor 31 with a reduction gear operates again and the workpiece 2
1 and the pallet mounting table 24 are returned to their original horizontal positions, and the next working state is entered.

As described above, according to the reversing device of the present invention, the workpiece is rotated in a plane perpendicular to the direction in which the pallets are carried in and out, and the rotary drive unit that rotates the workpiece is rotated between the conveyor and the conveyor with the pallet mounting table as the center. Since they are concentrated on the opposite side, the installation distance from the conveyance device can be reduced, and the entire reversing device can be downsized, reducing the installation floor area and space occupied. Therefore, the inside of the factory can be used more effectively. Furthermore, since there is no interference with the conveying device, there is no need to move the conveying device to the side during the reversing operation, and processing time can be shortened. Furthermore, since only the rotation drive unit is located on the side of the workpiece,
Even if the workpiece becomes larger, there are fewer changes to the equipment. Furthermore, when a pallet is pulled into a pallet mounting table, its movement in the horizontal direction perpendicular to the pulling direction is restricted, but in the device of the present invention, this fixing direction and the rotating direction of the pallet coincide, so that There is no need to provide a fixed part that restricts movement in the rotational direction as in the conventional case. In addition, the annular sprocket member and roller chain are installed on the rear side opposite to the track of the conveyor vehicle, that is, on the opposite side of the pallet mounting table, with the support part in between. It will not stick to or get caught between them. Further, since the hopper is provided so as to protrude from the inverted and lowered side of the pallet mounting table, chips can be collected accurately.

[Brief explanation of the drawing]

Figures 1 to 4 show a conventional reversing device. Figure 1 is a front view, Figure 2 is a side view, Figure 3 is a sectional view of the same, and Figure 4 shows the installation distance from the conveyance device. It is an explanatory view when it is shortened. Furthermore, FIGS. 5 and 6 show an embodiment of the present invention.
The figure is a front view, and FIG. 6 is a side view. 20... Conveyance device, 21... Workpiece, 22...
Pallet, 23... Workpiece reversing device, 24... Pallet mounting table, 25... Rotation drive unit.

Claims (1)

[Scope of utility model registration request] A rotating body 28 equipped with an annular sprocket member 28a is mounted on a support portion 26 of a pedestal 27 disposed near the track 20b of the transport vehicle 20a.
An annular sprocket member 28a is disposed on the rear side opposite to the raceway 20b of 0a, and the raceway 20b is
On the front side of the rotating body 28 facing the orbit 20b, a pallet mounting table 24 that rotates together with the rotating body 28 in the same direction is mounted rotatably in a vertical plane parallel to the orbit 20b. On the other hand, the gantry 27 is provided with a hopper 33 that receives the chips that fall when the pallet mounting table 24 is reversed, and the hopper 33 is installed so that the pallet loading and unloading side of the pallet mounting table 24 is oriented laterally. The annular sprocket member 28 is provided in a protruding manner.
A workpiece reversing device characterized in that a chain 30 for transmitting the rotation of a motor 31 to an annular sprocket member 28a is wound around a.