JPS6045018B2 - Automatic feeding device for workpieces - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic workpiece feeding device that automatically moves a workpiece from one processing machine to another.

BACKGROUND ART Conventionally, as this type of automatic feeding device, for example, a large type of automatic feeding device installed between relatively distant processing machines is movable on the floor of a factory.

For example, the automatic feeding device itself is mounted on a truck, and the truck moves on rails laid on the factory floor. When replacing various components of a processing machine, such as a mold when the processing machine is a press machine, the automatic feed device itself is moved horizontally from between the processing machines to a predetermined evacuation position in the front or rear. A work space for exchanging the parts is created between the processing machines. This is because it is difficult to secure enough work space around the processing machine for replacing parts in the limited space within the factory. However, in such a limited factory, it is difficult to secure a special evacuation area for the automatic feeder in front or behind the processing machines. Various problems arose, including the need for special renovations to some parts of the factory's pillars, etc.

This invention was made in view of the above circumstances, and by equipping the main body of an automatic feeder so that it can move up and down within a vertical plane between processing machines, it is possible to The main body of the automatic feed device can be retracted to the raised position, and a working space for replacing the above-mentioned parts can be created extremely easily below it, and a cradle for the workpiece can be installed between the processing machines. By doing so,
It is an object of the present invention to provide an automatic feed device for a workpiece that can reliably move the workpiece via the pedestal even between relatively distant processing machines.

Hereinafter, a description will be given based on one embodiment of the present invention.

In the figure, numerals 1 and 2 indicate processing machines for the workpiece W, which are installed relatively apart on the floor surface of the factory so as to be interposed in the processing line for the workpiece W.

According to this embodiment, both of these processing machines 1 and 2 are so-called gate-shaped press machines with four pillars 3 as frameworks, and one on the left side in the figure is located above the processing line. It is located. 4 and 5 in the figure are both press machines 1 and 2.
The upper and lower molds are shown respectively. On the floor of the factory, at an intermediate position between the press machines 1 and 2, a square frame pillar-shaped support 6 for the automatic feeding device is erected.

Guide rails 7 each having a substantially T-shaped cross section are provided along the vertical direction on both sides of the support column 6. An elevating frame 9 having a substantially U-shaped cross section is guided by each of the guide rails 7 so as to be movable up and down via a plurality of guide rollers 8 that sandwich the flanges thereof.
Furthermore, a winch 10 for raising and lowering the lifting frame 9 is installed at the top of the support column 6. This is a linear structure such as a chain or wire whose lower end is connected to the upper end of the lifting frame 9 to the drum 13, which is rotated in the normal or reverse direction as appropriate by the driving force of the motor 12 transmitted via the worm reducer 11. The upper end side of the connecting body 14 is wound around the linear connecting body 14 as the drum 13 rotates.
The elevating frame 9 is raised and lowered according to the amount of winding. Note that an operation panel (not shown) for the motor 12 is provided on the back side of the support column 6. A pair of guide portions 15 each having an inwardly bent upper portion close to each other is provided along the vertical direction on both sides of the front surface of the elevating frame 9 .

The holding body 1 is placed between these pair of guide bodies 15.
By matching the flange portions 17 of 6, the holder 16 itself is guided so as to be vertically movable. Moreover, various fluid pressure cylinders 18 are provided between the upper part of the elevating frame 9 and the upper end portion of the holder 16 for vertically moving the holder 16 with respect to the elevating frame 9. The holder 16 has a horizontally symmetrical shape and is located between the press machines 1 and 2 along a straight line connecting them. A guide portion 19 extending in the horizontal direction is provided on the lower side of the holding body 16, and an oblong slide body 20 is supported by the guide portion 19 so as to be movable in the horizontal left-right direction. An intermediate portion of the slide body 20 is connected to a connecting body 22 such as a chain or a belt via a connecting fitting 21. This connecting body 22 is located between wheels 23 located on both sides of the holding body 16, a wheel 25 of a motor 24 installed in the center of the holding body 1F 6, and auxiliary wheels 26 located on both sides of this wheel 25. The connecting body 21 itself is reciprocated as the motor 24 rotates, thereby causing the sliding body 20 to slide repeatedly in the left and right direction. In addition, a support body 2 is provided at a total of three locations on the lower side of the slide body 20, including the intermediate portion and the left and right portions.
4 vacuum suction cups 30 via 7, 28, 29
Three sets are supported downward. The vacuum suction cups 30 in each set are supported symmetrically, two at the top and two at the top in FIG. 28 and 29 are rotatable relative to each other in a horizontal plane, and the arrangement form of the suction cups 30 in each set can be adjusted as appropriate depending on the shape of the workpiece w. Left and right pedestals 32 are fixed on the side via a horizontal support 31. These pedestals 32 cover the moving distance of the workpiece W between both press machines 1 and 2, that is, both The pedestal 32 on the far right in the figure is provided at a position that divides the distance between the lower molds 5 into three equal parts.The pedestal 32 on the far right in the figure is used to invert the pressed workpiece W and further separate it into three parts. It is configured to be reversible so that press processing can be performed. In the figure, 33 is a control panel for the motor that drives the slide body 20.
It is provided on the front side of the support stand 31.

Next, the operation of the above-mentioned component device will be explained.

When the device is in operation, the lifting frame 9 is in the lowered position as shown in FIG. cradle 3 at this time
2 is set in advance to be the same height as the lower mold 5 in both press machines 1 and 2. In this state, first, the piston rod of the cylinder 18 is retracted, and the holder 16 is temporarily moved to an upward position relative to the elevating frame 9, as shown in FIG.

Then, the motor 24 is operated and the slide body 20 is moved to the first position.
It slides to the left from the neutral position shown in the figure, and the left set of suction cups 30 is positioned above the workpiece W on the lower die 5 of the press machine 1 on the left side. Then cylinder 1
The piston rod 8 is extended and the holder 16 moves downward until the suction cup 30 comes into contact with the workpiece W. When the suction cup comes into contact with the workpiece W, the suction cup 30 vacuum-chucks the upper part of the workpiece W. after that,
The piston rod of the cylinder 18 is retracted, and the holder 16 is again moved to the upward position relative to the elevating frame 9 as shown in FIG. At this time, the suction cup 30 suction-holds the workpiece W in a suspended state. after that,
The motor 24 operates, and the slide body 20 passes through the neutral position shown in FIG. 1 and slides to the right, and the left suction cup 30 is positioned above the left pedestal 32. Then, the piston rod of the cylinder 18 expands and contracts again and moves downward until the workpiece W, which is suction-held by the suction cup 30, is placed on the pedestal 32 on the left side, and then the suction cup 30 is vacuum-adsorbed. will be released. Therefore, the workpiece W that has been pressed by the pressing machine 1 on the left side is automatically moved onto the pedestal 32 on the left side by the suction cup 30 of the left side set. By the way, since the left and right pedestals 32 are provided at positions that equally divide the distance between the lower molds 5 into three,
By repeating the above-described operation of this device, the workpiece W on the pedestal 32 on the left side is moved to the suction cup 3 of the center group.
0, it is sequentially moved onto the pedestal 32 on the right side,
The workpiece W on the pedestal 32 on the right side is sequentially moved to the lower mold 5 of the press machine 2 on the right side by the suction cup 30 of the right side set.
moved up.

In this way, the workpiece W processed by the press machine 1 on the left side is automatically moved to the press machine 2 on the right side via the two pedestals 32 in a so-called step feed method.

Next, when replacing or maintaining various component parts such as the molds 4 and 5 in the press machines 1 and 2, first stop the operation of this device as described above, and then start the motor 12. The elevating frame 9 is raised to a predetermined raised position.

In this raised position, the lower surface of the support base 32 is set in advance to be at a height of about 2 TrL from the floor surface. Therefore, the height between the press machines 1 and 2 is approximately 27
Only the support column 3 exists in the space of the TL, and this space can be used extremely effectively as a space for exchanging the molds 4, 5, etc. of the press machines 1, 2. As explained above, according to the automatic feed device for a workpiece according to the present invention, the main body of the automatic feed device is retracted to the raised position when replacing various components in a processing machine, so that various Sufficient work space for replacing components, etc. can be secured below the main body of the automatic feeder, and only! Since it does not occupy any limited floor space within the factory, it is extremely easy to install it within the factory.

In addition, since the workpiece is moved by a so-called step feed method, the workpiece can be moved reliably. ) BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic front view showing an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is an enlarged sectional view taken along line 1--2 in FIG. 1.

1, 2...Bress machine (processing machine), 6...
・Strut, 79... Elevating frame, 16...
...Holding body, 30...Suction cup, 32...
cradle.

Claims (1)

[Claims] 1. In an automatic workpiece feeding device that automatically moves a workpiece from one processing machine to another processing machine, a support that is erected on the floor between the two processing machines, and the support an elevating frame attached to the elevating frame that moves up and down, a holder attached to the elevating frame that moves up and down, and an elevating frame that is attached to the holder and moves reciprocating synchronously at predetermined intervals along a line connecting both processing machines. and a plurality of suction bodies capable of adsorbing and releasing the suction of the workpiece, and a pedestal attached to the lifting frame and positioned below the movement trajectory of the suction bodies, wherein the lifting frame is When in the lowered position,
When the suction body moves the workpiece on the one processing machine side onto the pedestal and then sequentially sends it to the other processing machine side, and the elevating frame is in the raised position, the elevating frame An automatic feeder for a workpiece, characterized in that a space for replacing parts of the processing machine is formed below.