JPS6035566Y2 - Workpiece loading/unloading device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device that automatically carries a workpiece into and out of a processing machine.

Conventionally, a carry-in arm for carrying in and a chute for carrying out were separately provided on the table in order to carry the workpiece into the processing position and to carry the machined workpiece out from the processing position.

However, the installation space on the table is small and
When two devices are installed, there are problems such as mutual interference, and there are various restrictions on installation.

Furthermore, since the workpiece after machining is dropped under its own weight onto the carry-out chute and rolled to be carried out, there is a risk that the workpiece may be damaged.

In order to solve the above-mentioned conventional problems, the present invention provides a support device such as a conveyor for supporting unprocessed and processed workpieces, and installs a transfer device between this support device and the headstock and pusher device, After the unprocessed workpiece is transferred to the pusher device by this transfer device, it is moved directly to the headstock side and waits for the workpiece being processed to finish processing.At the same time as processing is completed, the workpiece is transferred to the support device and the unprocessed workpiece is transferred to the headstock. The present invention provides an efficient loading and unloading device that receives a workpiece to be processed, while the pusher device attaches an unprocessed workpiece to the headstock.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a headstock, 9 is a pusher device installed opposite to the headstock 1, 17 is a support device (hereinafter referred to as a conveyor) that moves in a direction parallel to the spindle axis direction of the headstock 1, 16 is a transfer device installed between the headstock 1, the bushing device 9, and the conveyor 17.

As shown in FIG. 2, a main shaft 2 is rotatably supported on the headstock 1, and is rotationally driven by a flash drive mechanism.

A workpiece support member 3 is fixed to the front end surface of the main shaft 2, and a collet member 4 is guided and supported on the support member 3 so as to be able to protrude in the radial direction.

Reference numeral 5 denotes an actuating rod that passes through the center of the main shaft 2 and the support member 3, and operates the collet member 4 by moving the axis of the center of the support member 3 using a flashing cylinder device to move the workpiece W on the support member 3. Clamp and unclamp.

Reference numeral 7 denotes a pushing member for pushing the workpiece W at the processing position supported on the support member 3 to a workpiece receiving position by a transfer device 19 (described later), and is moved forward and backward in the axial direction of the main spindle 2 by a cylinder device 8. do.

Reference numeral 6 denotes a grinding wheel for grinding the workpiece W clamped on the support member 3.

As shown in FIG. 2, the bushing device 9 has a bushing shaft 11 provided on a bushing device main body 10 so as to be movable back and forth concentrically with the main shaft 2. As shown in FIG.

Furthermore, a support rod 12 that supports the workpiece W is slidably inserted into the center of the buttonshaft shaft 11, and is always projected by a spring 13 by the length necessary to support the workpiece by the end surface of the buttonshaft shaft 11. There is.

Furthermore, in order to advance the bushing shaft 11 to the delivery position A of the workpiece W as shown in the figure, the first-stage feed cylinder device 14 is used to push the workpiece W to the processing position B on the support member 3 on the headstock 1 side. It has a two-stage feed cylinder device 15.

Next, the configuration of the transfer device 16 will be explained with reference to FIGS. 1 and 3.

A movable table 19 is supported on a support table 18 installed approximately in the middle between the main spindle 1, the bushing device 9, and the conveyor 17 so as to be movable in a direction parallel to the axial direction of the main spindle 2.

A rotating body 21 is supported on the movable table 19 by a support shaft 22 so as to be rotatable between the headstock 1, the bushing device 9, and the conveyor 17 within a plane perpendicular to the spindle axis.

A transfer arm 27 is supported within this rotating body 21 so that it can only rotate (swivel) at an angle of 90', and a gripping claw 2 is attached to the tip of the transfer arm 27.
8 is attached so that it can be opened and closed.

29 is a spring that acts in the closing direction of the gripping claw 28, and 30 is an engagement element that opens the gripping claw 28.

The engaging member 30 is provided integrally with a rod 30a that is moved forward and backward by a gripping claw opening/closing cylinder device 31 formed at the rear end of the transfer arm 27.

The moving table 19 moves the transfer arm 27 by a shift cylinder device 20 to a receiving position C for receiving a processed workpiece.
Then, the workpiece is moved to a carry-out position where the received workpiece is pulled out from the support member 3, and further to a delivery position A where the unprocessed workpiece is delivered to the pusher device 9.

The shift cylinder device 20 has a two-stage cylinder configuration in the illustrated embodiment, but the shift cylinder device 20 has a two-stage cylinder configuration,
D.

A may be detected by a limit switch, and the three-position switching valve may be switched to the neutral position in response to a signal from the limit switch to stop the movable table 19 at the intermediate position (unloading position D).

The actuating device that rotates the transfer arm 7 between the headstock 1 and the conveyor 17 and between the conveyor 17 and the pusher device 9 includes:
A pinion 26 is provided on one of the support shafts 22 that pivotally supports the rotating body 21 on the movable table 19, and a cylinder device 23 for rotating the transfer arm has a rack piston 24 that meshes with the pinion 26.

At one end of this transfer arm turning cylinder device 23, a gripping claw 28 is attached to an auxiliary cylinder 2 for temporarily turning the transfer arm 27 upward at a small angle on the conveyor 17.
5 is provided.

On the other hand, the rotation mechanism of the transfer arm 7 for changing the posture of the gripping claw 28 at an angle of 90° has a pinion 34 carved on the outer peripheral surface of the transfer arm 27, and a pinion 34 in the cylinder device 32 for rotating the shaft transfer arm. It has a structure in which the rack piston 33 is engaged with the transfer arm 27 in a direction perpendicular to its axis.

Next, regarding the operation of the device of the present invention having the above configuration,
The explanation will start from the time when the workpiece W at the processing position B has finished processing.

Upon completion of machining, the grinding wheel 6 moves back, and the machined workpiece W
In order to unclamp the collet member 4, the actuating rod 5 moves forward to loosen the collet member 4.

Next, the pushing member 7 moves forward to move the workpiece W from the processing position B to the receiving position C.

At this receiving position C, the gripping claw 28 is in a standby position,
The workpiece W is moved to a position corresponding to the open gripping claw 28.

Here, the locking element 30 of the gripping pawl 28 is moved back by the operation of the cylinder device 31 for opening and closing the gripping pawl, and the gripping pawl 28 is closed by the tensile force of the spring 29 to grip the workpiece W.

At the position where the gripping claws 28 grip the workpiece W, the workpiece W is still
is on the support member 3, and in that state it is impossible to transfer it to the conveyor 7 side.

Therefore, the shift cylinder device 20 operates, and the support base 1
9 to an intermediate position, and the gripping claw 28, that is, the transfer arm 27, is moved to the unloading position.

As a result, the workpiece W gripped by the gripping claws 28 is ready to be pulled out from the support member 3 and transferred.

Subsequently, the transfer arm rotation cylinder device 23 and the transfer arm rotation cylinder 32 operate, and the rotation body 21
The transfer arm 27 is pivoted toward the conveyor 17 side via the transfer arm 27, and the transfer arm 27 is also rotated 90' to change the attitude of the workpiece W held by the gripping claws 28 to a flat state.

When the gripping claws 28 are positioned on the conveyor 17, the shift cylinder device 20 is activated, and the transfer arm 27 is shifted back to the backward end, simultaneously opening the gripping claws 28 and transporting the processed workpiece W onto the conveyor 17. .

Then, the auxiliary cylinder 25 is activated and the gripping claw 28 is opened.
As shown by the imaginary line S in Fig. 3, it makes an upward turn at a small angle,
The processed workpiece W is transferred by the conveyor 17, and the unprocessed workpiece W is sent directly below the gripping claws 28.

On the other hand, while the transfer device 16 is transporting the processed workpiece W to the conveyor 17, the butcher device 9 carries out the operation of transporting the unprocessed workpiece W to the processing position B of the headstock 1, and starts processing. do.

That is, the unprocessed workpiece W that has been delivered to the support rod 12 in the previous cycle is transferred to the two-stage feed cylinder 1.
It is passed to the support member 3 by the forward movement of step 5, and then pushed into the processing position B by the end face of the bushing shaft 11.

At this time, the support rod 12 comes into contact with the end surface of the support member 3, compresses the spring 13, and moves relative to the bushing shaft 11.

The workpiece W placed at the machining position B is clamped by the collet member 4, and the bushing shaft 11 is connected to the first stage feed cylinder 1.
4 and the two-stage feed cylinder device 15, the grinding wheel 6 is returned to the rearmost end, and the grinding wheel 6 moves forward to start machining.

At the rearmost end of the bushing shaft 11, the support rod 12 protruding from the end face is positioned substantially flush with or inwardly from the front end face of the bushing device main body 10, and the conveyor The purpose is to avoid interference with the gripping claws 28 when placing the pope crop W at the delivery position A from above 17.

After the buttonshaft shaft 11 is returned to its rearmost end, the gripping claws 28, which are rotating upward at a small angle on the conveyor 17, descend again, grip the unprocessed workpiece W, and move the transfer arm 27
The transfer arm 27 rotates toward the pusher device 9 side.
The workpiece W is rotated 90' to adjust the shape of the workpiece W and then transported to the delivery position A in front of the bushing shaft 11.

This workpiece W is moved forward by one step of the bushing shaft 11 by the forward movement of the one-stage feed cylinder device 14 of the bushing device 9, and the support rod 12 is passed through the shaft hole of the workpiece W to be supported.

Thereafter, the gripping claws 28 are opened, and the shift cylinder 20 is operated forward to shift the transfer arm 27 to the forward end, and the gripping claws 28 are kept open until the workpiece being machined is finished being machined at the receiving position C. stand by.

In the above embodiment, a conveyor was used as an example of the support device, but the present invention is not limited to this. The workpiece may be positioned at a predetermined position.

As described above, according to the device of the present invention, workpieces can be loaded and unloaded only by the transfer device installed between the headstock, pusher device, and support device such as a conveyor, so the installation space is small. There are no restrictions on installation, and since no chute is used, there is an advantage in that the workpiece is less likely to be damaged.

In addition, the present invention has a buttonshaft that is concentric with the main spindle axis, and a buttonshaft that is concentric with the buttonshaft and is slidable relative to the buttonshaft and is fitted into the buttonshaft so that it can be retracted by contacting the support member on the headstock side. A combined support rod and a device for receiving the workpiece from the transfer device and sending and advancing the pusher shaft and the support rod to attach the workpiece to the spindle are provided, so that the workpiece attached to the headstock can be machined. During this process, an unprocessed workpiece is prepared in advance on the support rod of this pusher device by a transfer device, and when the workpiece is finished machining and is removed from the headstock, the pusher device moves forward to transfer the workpiece to the main spindle. An unprocessed workpiece can be set on the support member of the table, and processing of the next workpiece can be started without loss time.

Furthermore, the support rod is designed to be able to retreat into the pusher shaft after contact with the support member, allowing the workpiece to be smoothly transferred onto the support member without falling off when the workpiece is delivered. .

Furthermore, the present invention provides a gripping claw that removably grips a workpiece with respect to the transfer device, a transfer arm that supports the gripping claw, and a transfer arm that is connected between the headstock and the support device and between the support device and the pusher device. A device for moving the transfer arm in a direction intersecting the axis of the spindle, a device for rotating the transfer arm within the rotation plane of the transfer arm, a receiving position for receiving processed workpieces from the spindle, and a pusher device for transferring unprocessed workpieces. Since the configuration includes a device that moves the transfer arm in a direction parallel to the spindle axis direction between the transfer position and the transfer position, by rotating the transfer arm, the transfer arm can be supported horizontally on the headstock. It is possible to change the posture of the workpiece to a vertical state during the rotation movement of the transfer arm, and then place it on the support device.There is no need to change the posture of the workpiece on the support device, and it can be moved to the next position as it is. transport operation can be started.

[Brief explanation of the drawing]

Figure 1 is a plan view of the device of the present invention, and Figure 2 is from ■ to ■ in Figure 1.
3 is an enlarged cross-sectional view taken along the line ■--■ of FIG. 1. 1... Headstock, 2... Main spindle, 3...
...Support member, 4...Collet member, 7...
...Extrusion member, 9...Butsusha device,
11...button shaft, 12...support rod, 14...1 stage feed cylinder device, 15...
...Two-stage feeding cylinder device, 16... Transfer device, 17... Conveyor, 18...
Support stand, 19...Movement stand, 20...Shift cylinder device, 21...Swivel body, 22.
...Support shaft, 23...Transfer arm rotation cylinder device, 27...Transfer arm, 2 ends...
...Gripping claw, 31... Cylinder device for opening and closing the gripping claw, 32... Cylinder device for rotating the transfer arm.

Claims (1)

[Scope of utility model registration request] a headstock for rotatably gripping a workpiece around a horizontal axis;
A pusher device installed opposite the headstock, a support device that supports an unprocessed or machined workpiece with its axis directed in the vertical direction, and a pusher device that moves between the headstock and the support device. The headstock includes a support rod that guides and supports the workpiece, and a transfer device that transports the processed workpiece and transports the unprocessed workpiece between the support device and the pusher device. It has a clamping device that clamps a workpiece to the support rod, and the bushing device has a bushing shaft that is concentric with the spindle axis, and a bushing device that is slidable relative to the bushing shaft concentrically with the bushing shaft and that is attached to the headstock side. a support rod that is fitted in such a way that it can be retracted while coming into contact with a support member; and a device that feeds and advances the pusher shaft and the support rod in order to receive the workpiece from the transfer device and attach the workpiece to the main shaft. The transfer device includes a gripping claw that removably grips the workpiece, a transfer arm that supports the gripping claw, and a transfer arm that connects the spindle axis between the headstock and the support device and between the support device and the pusher device. A device that moves the transfer arm in a cross direction, a device that rotates the transfer arm within the rotation plane of the transfer arm, a receiving position that receives processed workpieces from the spindle, and a delivery position that transfers unprocessed workpieces to the pusher device. and a device for moving the transfer arm in a direction parallel to the spindle axis direction.