JPH0232363Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is a work discharge device for machine tools such as grinders, lathes, boring machines, etc., in particular, a workpiece discharge device for machine tools such as grinders, lathes, boring machines, etc. This invention relates to a workpiece ejection device for a machine tool.

(Prior art) Conventionally, the workpiece discharge device of a machine tool, which discharges the workpiece machined by the machine tool to an outshoot using a loader, has been designed to discharge the workpiece machined by the machine tool to an outshoot. Place the machined workpiece on the loader and move it directly to the vicinity of the entrance of the outshute, and then release the above-mentioned placement on the loader to load the machined workpiece into the outshute so that it can be taken out from the machine tool by the outshute. It is known that it is composed of

However, in the workpiece ejecting device of this machine tool, the state in which the loader places the workpiece and the state in which it is released from the loader are not necessarily constant, and the posture of the workpiece that is thrown from the loader into the outshut is not constant. There is. That is, there is a problem that the workpiece may be obliquely thrown into the outshute and get stuck in the outshute, or the workpiece may not enter the outshute.

In order to solve such problems, it is conceivable to increase the opening area of the inlet of the outshute and the cross section of the chute passage.

If the opening area of the inlet of the outshute is increased, mistakes in putting the workpiece into the outshute can be prevented, but the posture of the workpiece is likely to be disturbed at the inlet of the outshute. Furthermore, when the cross-sectional area of the outshoot passage is increased, the posture of the workpiece is likely to be disturbed during the outshoot.

In this way, when the posture of the workpiece taken out from the outshoot is not constant, problems will occur in subsequent processes such as the inspection process and the next machining process.

(Purpose of the invention) The present invention was made in view of the above-mentioned conventional problems, and is capable of reliably receiving a workpiece from a loader, holding it in a predetermined posture, and placing it in a predetermined position without causing interference with the loader or the workpiece on the loader side. It is an object of the present invention to provide a workpiece discharging device for a machine tool that has a simple configuration and can discharge a workpiece from a machine tool.

(Structure of the invention) A workpiece discharging device for a machine tool according to the present invention is a workpiece discharging device for a machine tool that discharges a workpiece machined by a machine tool to an outshute using a loader. A workpiece inputting posture regulating device is provided which receives the workpiece from the loader, adjusts the posture of the workpiece, and inserts it into the outshute. a reference piece having a first workpiece receiving regulating surface that slopes downward toward the direction; and an arm that is swingably supported on the reference piece via a horizontal support shaft parallel to the first workpiece receiving regulating surface and is on the outshoot side with respect to the support shaft. The upper surface of the part has a second workpiece receiving regulating surface, and the first and second workpiece receiving regulating surfaces are in a V-shape at the workpiece receiving regulating position, and the second workpiece receiving regulating surface also slopes downward toward the entrance of the outshut. a spring that elastically urges the swinging piece toward the workpiece receiving restriction position; a receiving surface that regulates the receiving surface to a receiving regulating position, and an elevating drive device that drives the reference piece and the swinging piece up and down between a raised position for receiving a workpiece and a lowered position for lowering from this and throwing the workpiece into an outshoot; A stopper is provided for receiving the oscillating piece and switching it to the work loading position when the reference piece and the oscillating piece approach the lowered position.

In the above configuration, the processed workpiece is received by the workpiece input posture regulating device from the loader.

At this time, the reference piece and the swinging piece are held in the raised position, the swinging piece is located at the workpiece reception restriction position, and the first and second workpiece reception restriction surfaces are opened in a V-shape.

Therefore, the workpiece received by the first and second workpiece receiving regulating surfaces opened in a V-shape is brought into simultaneous contact with both workpiece receiving regulating surfaces with its circumferential surface due to its own weight.
The axis is regulated to be accurately parallel to the valley line of the work receiving regulation surface.

After this, when the reference piece and the swinging piece are switched to the lowered position by the elevating drive device, the swinging piece is received by the stopper and switched to the workpiece loading position.
The workpiece whose posture is regulated as described above is guided by the second workpiece reception regulating surface formed on the swinging piece and is thrown into the outshoot.

(Effects of the invention) Since the present invention is configured as described above, the workpiece processed by the machine tool is sent to the workpiece feeding posture regulating device by the loader, and its posture is regulated at a constant level by the workpiece feeding posture regulating device. and then put into the outshoot. Moreover, the workpiece is guided from the workpiece input posture regulating device provided near the entrance of the outshute to the second workpiece reception regulating surface of the swinging piece tilted toward the entrance of the outshute, and is then introduced into the outshute. This has the advantage that the workpiece can be placed accurately at the entrance of the outshute, and mistakes in putting the workpiece into the outshute can be prevented. In addition, since the posture in which the workpiece is thrown into the outshute is not disturbed, the workpiece is not thrown into the outshute diagonally, and clogging of the workpiece during the outshute can be prevented.

Furthermore, the reference piece and the swinging piece are raised and lowered by the lifting drive device between a raised position for receiving the workpiece and a lowered position for throwing the workpiece into the outchutes, and in conjunction with the lifting and lowering operation, the swinging piece is controlled to receive the workpiece. Since the position and the workpiece loading position are changed over, it is possible to prevent interference between the loader and the workpiece gripped by the loader and the reference piece and the swinging piece with a simple configuration. Therefore, the structure of the loader can be prevented from becoming complicated, and the work can be received and discharged reliably and efficiently.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 is a schematic diagram of a workpiece supply and discharge device of a machine tool, where 1 is a workpiece, 2 is an insert, 3 is a loader, 4 is a workpiece input posture regulating device,
5 is an out shoot.

A shutter 7 that is opened and closed by an opening/closing drive device 6 consisting of, for example, a hydraulic cylinder is assembled into the in-shut 2. As shown in FIG.

The loader 3 also includes a loading arm 8 for loading the unprocessed workpiece 1 into a machine tool (not shown);
A discharge arm 9 for receiving a processed work from a machine tool and sending it to the work input posture regulating device 4, a swing limiting arm 10 for regulating a swing area, and a swing limiting arm 10 at its stroke end. It is provided with a pair of stoppers 11 and 12 for receiving the arms 8 to 10, and a swing drive device 13 made of, for example, a hydraulic servo motor for swinging the arms 8 to 10. A bifurcated chuck 1 is provided at the tip of the loading arm 8 and the discharging arm 9, respectively.
4 and 15 are provided.

As shown in FIGS. 2 to 4, the work input posture regulating device 4 includes a base frame 16, a work receiving position for receiving the work 1 on the base frame 16, and a work receiving position for receiving the work 1 at the outshoot 5 below the base frame 16. A reference piece 17 is provided which is movable up and down across the work input position and is supported non-rotatably around both the vertical axis and the horizontal axis.

The reference piece 17 of the workpiece input posture regulating device 4 is attached to the horizontal axis in a direction perpendicular to the direction of inputting the workpiece to the outshoot 5 (the front and back directions of the top of the paper in FIGS. 2 and 4) via a support shaft 18. A swinging piece 19 supported swingably is provided.

Further, the workpiece input posture regulating device 4 is provided with a pair of workpiece receiving regulating surfaces 20 and 21, which are usually opposed to each other in a V-shape, in order to receive the workpiece 1 and regulate its posture. One of the receiving regulating surfaces 20 and 21 is formed on the reference piece 17 and the other on the swing piece 19, parallel to the swing axis of the swing piece 19.

That is, one of the work receiving regulating surfaces 20 is formed on the upper surface of the reference piece 17, which is an inclined surface that descends toward the outshoot 5 side.

Further, the swinging piece 19 has one arm portion 22.
It is pivoted at the center in the width direction of the reference piece 17 so that the upper surface can swing on the lower half of the upper surface of the reference piece 17, and the other workpiece reception regulating surface 21 is supported on the lower half of the upper surface of the reference piece 17. It is configured on the upper surface of one arm portion 22.

Further, the workpiece input posture regulating device 4 has a workpiece receiving regulating position (shown by a solid line) in which the swinging piece 19 is opened in a V-shape where the other workpiece receiving regulating surface 21 and one workpiece receiving regulating surface 20 are opened in a V-shape. At the workpiece input position (indicated by the two-dot chain line), the narrow angle of both workpiece reception regulation surfaces 20 and 21 is opened more than the workpiece reception regulation position, and the other workpiece reception regulation surface 21 is also tilted downward toward the inlet 23 of the outshoot 5. A drive device 24 is provided for driving across the range.

This drive device 24 includes a spring 25 for automatic return that urges the swinging piece 19 from the work input position to the work receiving restriction position, and a double-acting hydraulic pressure mechanism that supports the reference piece 17 so as to be movable up and down on the base frame 16. A lifting drive device 26 consisting of a cylinder that drives the reference piece 17 and the swinging piece 19 up and down between a raised position for receiving the workpiece 1 and a lowered position for throwing the workpiece 1 into the outshoot 5; , reference piece 1
In order to swing the swinging piece 19 to the work loading position when the workpiece 7 reaches the lowered position, this lifting drive device 2
6, that is, in the middle of the lowering step of the reference piece 17, the stopper 28 receives the other arm portion 27 of the swinging piece 19 from below.

The spring 25 is composed of a tension coil spring that is stretched between a pin 29 implanted in the reference piece 17 and the other arm portion 27 of the swinging piece 19.
Sensors 30 and 31 for detecting positions, each of which is constituted by a proximity switch, for example, are arranged at positions facing the pin 29 at both the upper and lower ends of the lifting and lowering steps 7. Further, the reference piece 17 is provided with a receiving surface 32 that receives the lower surface of the other arm portion 27 of the swinging piece 17 located at the work receiving restriction position.

Before receiving the workpiece 1 from the loader 3, the reference piece 17 and the swinging piece 19 are in contact with the chuck 15 of the discharge arm 9 of the loader 3 which is returned to the processing position of the machine tool, or the workpiece input posture regulating device 4 In order to avoid contact with the workpiece 1 that is being fed in and the chuck 15 that is gripping the workpiece, the workpiece is kept on standby at the lowered position.

When receiving work 1 from loader 3, loader 3
The ejection arm 9 is located at a position to release the workpiece 1, and the reference piece 17 is connected to the lifting drive device 2.
6 is placed in the raised position by extending it. During this upward movement, the other arm portion 27 of the swinging piece 19 is lifted upward from the stopper 28, and the swinging piece 19 is automatically returned to the work receiving restriction position by the tension of the spring 25. Therefore, the workpiece receiving regulating surfaces 20 and 21 receive the workpiece 1 in a V-shaped open state, and the posture of the workpiece 1 is regulated to be constant as the workpiece 1 contacts these workpiece receiving regulating surfaces 20 and 21 with its own weight. be done.

In this embodiment, the reference piece 17 and the swinging piece 19 are raised to a height at which the chuck 15 of the loader 3 receives the work 1 on the work receiving regulation surfaces 20 and 21 at the position where the chuck 15 releases the work 1.
Disturbances in the posture of the workpiece 1 when released from the chuck 15, and the workpiece receiving regulation surface 2 after being released from the chuck 15.
It is possible to eliminate disturbances in the posture of the workpiece 1 until it is received by the workpieces 0 and 21.

After this, the lifting drive device 26 is shortened and the workpiece 1 is
The reference piece 17 and the swinging piece 10 on which the reference piece 17 is placed are lowered. During the descent of the reference piece 17 and the swinging piece 19, the other arm 27 of the swinging piece 19 hits the stopper 28.
As the reference piece 17 continues to descend to the lowered position, the swinging piece 19 is caused to swing about the support shaft 19 from the workpiece receiving regulation position to the workpiece inputting position. As a result, the workpiece 1 loses its support on the swinging piece 19 side and starts rolling on the workpiece reception regulating surface 21 of the swinging piece 19. Workpiece reception regulating surface 21 of the swinging piece 19 located at the workpiece input position
is inclined downward toward the entrance 23 of the outshute 5, so the workpiece 1 rolling thereon is reliably introduced into the entrance 23 of the outshute 5 without losing its posture.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and for example, the raising and lowering process of the reference piece 17 and the swinging piece 19 can be adapted to machine tools commonly used for machining workpieces 1 having different diameter dimensions. It may be configured so that it can be adjusted.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a schematic front view of the workpiece supply and discharge device, FIG. 2 is a front view of the workpiece loading posture regulating device, and FIG. 3 is a side view of the workpiece loading posture regulating device. 4 are enlarged longitudinal cross-sectional views of main parts of the workpiece input posture regulating device. 1...Work, 3...Loader, 4...Work loading posture regulating device, 5...Outshoot, 16...
... Base frame, 17 ... Reference piece, 18 ... Support shaft, 19 ...
...Swivel piece, 20... Workpiece receiving regulation surface, 21...
Workpiece reception regulating surface, 22... One arm of the swinging piece, 23... Inlet of the outshoot, 24... Drive device, 25... Spring, 26... Lifting drive device,
27... The other arm of the rocking piece, 28... Stopper, 32... Receiving part.

Claims (1)

[Scope of Claim for Utility Model Registration] A work discharge device for a machine tool in which a workpiece machined by a machine tool is discharged to an outshute by a loader, which receives the workpiece from the loader near the entrance of the outshute and adjusts the posture of the workpiece. A workpiece inputting position regulating device is provided to input the workpiece into the outshute at the same time, and the workpiece inputting posture regulating device includes a base frame, and a first workpiece receiving regulator that is unrotatably supported by the base frame and tilts downward toward the outshute side at the upper end. a reference piece having a surface, and a second workpiece receiving regulating surface that is swingably supported on the reference piece via a horizontal support shaft parallel to the first workpiece receiving regulating surface and on the upper surface of the arm on the outshoot side of the supporting shaft. and a work receiving regulating position where the first and second work receiving regulating surfaces open in a V-shape and a work inputting position where the second work receiving regulating surface also slopes downward toward the entrance of the outshut. a movable piece; a spring that elastically biases the swinging piece toward a workpiece receiving restriction position; and a receiving surface formed on the reference piece and regulating the swinging piece to the workpiece reception restriction position against the spring; an elevating drive device that drives the reference piece and the swinging piece up and down between a raised position where the workpiece is received and a lowered position where the workpiece is lowered and thrown into the outshoot; and the reference piece and the swinging piece are lowered. A workpiece discharging device for a machine tool, comprising a stopper that receives a swinging piece and switches it to a workpiece loading position when the swinging piece approaches the workpiece loading position.