JP2514750Y2 - Auto loader for curve generator - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is mounted on an autoloader for a curve generator, more specifically, a curve generator that grinds a workpiece such as a lens with a diamond wheel to create a spherical surface. The present invention relates to an autoloader that supplies a work to a curve generator and collects a processed work from the work.

[Conventional technology]

Conventionally, the supply of the work to the curve generator and the collection of the processed work have often been performed manually, but recently, this work is often performed mechanically by an autoloader.

[Problems to be solved by the device]

However, in the case of the conventional autoloader, the four processes of picking up the work to be processed, supplying the work to the curve generator, waiting, and collecting the processed work are repeated, so there is a lot of idle time and efficiency. Was not good.

Therefore, the present invention provides an autoloader for a curve generator having a simple structure which can efficiently supply and collect a work to and from a curve generator without an idle time and dramatically improve productivity. This is an issue.

[Means for solving the problem]

According to the present invention, a pin cylinder is installed on a base installed via a support on a curve generator, and a rod of the pin cylinder is vertically mounted with a cylinder plate that is horizontally transferred by the pin cylinder. A unit cylinder and a stopper cylinder that regulates the stroke of the unit cylinder are installed vertically on the cylinder plate, and a feed / discharge arm equipped with two upper and lower vacuum pads is attached to the lower end of the rod of the unit cylinder, and the base is attached to the base. A cylinder is installed sideways via a cylinder bracket, and a chuck support is attached to the rod, and in the chuck support, a parallel chuck that opens and closes a pair of centering claws is provided, and the screw coil spring constantly rotates downward. The attached chuck mounting bracket is pivotally supported, and a pad plate in which a centering work receiver and a discharging vacuum pad are arranged in parallel is provided on the chuck mounting bracket, and at the bottom of the chuck mounting bracket. A cam follower that comes into contact with a plate fixed to the cylinder bracket by a restoring force of the torsion coil spring, and the chuck mounting bracket is rotatable by a forward movement of the cylinder by a restoring force of the torsion coil spring; A pad plate fixed to the chuck mounting bracket is formed so that the cam follower is disengaged from the plate and abuts on the bottom surface of the chuck support so that the pad plate is held in a vertical state when the cylinder advances to a predetermined position. When the cylinder moves forward the most The unworked workpiece thus abutted against the lower vacuum pad of the feeding / discharging arm at the rising end, and the processed workpiece adsorbed by the upper vacuum pad of the feeding / discharging arm is the discharging pad of the pad plate. The stroke is adjusted so as to come into contact with the curve generator, and the unit cylinder descends in two steps so that the two vacuum pads of the supply / discharge arm face the chuck of the curve generator. , To solve the above problems.

[Action]

The work supplied to the work receiving part is sandwiched by the centering claws there, and then centered, and then moves forward through the chuck support and the chuck mounting bracket by the action of the cylinder. The pad plate rotates vertically with. After that, by the action of the cylinder, it comes close to the feeding / discharging arm, releases the centering claw, and supplies the unprocessed work to the lower vacuum pad, and at the same time, discharges the processed work from the upper vacuum pad. Collect at.

Then, the feeding / discharging arm descends to the descending end, horizontally moves to the curve generator side by the action of the pin cylinder, the machined work is collected from the chuck of the curve generator by the upper vacuum pad, and the second half stroke that moves horizontally rises. , Again, move horizontally to the curve generator side and supply the unworked work from the lower vacuum pad to the chuck of the curve generator. Then, after moving horizontally, it rises and waits for the supply of the next unprocessed work. On the other hand, the pad plate returns to the horizontal state by the reverse operation of the above with the backward movement of the cylinder, a new unprocessed work is supplied to the centering work receiver, and it is processed from the discharge vacuum pad. Wait until the work is discharged.

〔Example〕

 A preferred embodiment of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 denotes a twin rod unit cylinder attached to a vertically arranged cylinder plate 2, and a feed / discharge arm 3 is attached to the lower end of the rod which reciprocates in the vertical direction. The upper and lower vacuum pads 4 and 5 are installed on the supply / discharge arm 3. Although not shown,
It goes without saying that a degassing tube is connected to each of the vacuum pads 4 and 5.

A stopper cylinder 6 is attached to the opposite side of the cylinder plate 2 to the unit cylinder 1 installation side. A stopper 7 is attached to the rod tip of the stopper cylinder 6 facing in the vertical direction. Stopper 7
Is vertically slidable in the vertical hole 8 formed in the cylinder plate 2, and the tip of the stopper 7 projects toward the unit cylinder 1 installation side of the cylinder plate 2, and the projected tip is shocked. The absorber 9 is attached. The shock absorber 9 is a receiving plate 10 fixed to the upper end of the rod of the unit cylinder 1.
Will come into contact with.

Reference numeral 11 is a pin cylinder attached to a base 13 via a bracket 12, and its rod oriented in the horizontal direction is fixed to the cylinder plate 2. Two horizontally extending guide rods 14 and 14 are fixed to the cylinder plate 2, and the guide rods 14 and 14 are slidably inserted into linear bushes 15 and 15 installed on the bracket 12, respectively. There is. The guide rods 14 and 14 are for supporting the horizontal movement of the cylinder plate 2. Reference numeral 16 is a stopper attached to the bracket 12, with which the cylinder plate 2 abuts, whereby the cylinder plate 2 is positioned in the horizontal direction.

Reference numeral 17 denotes a cylinder bracket attached to the base 13 (see FIGS. 1 and 3), on which a horizontally driven cylinder 18 is installed. Cylinder bracket
17 has two guide rods 1 via a linear bush.
9 and 19 are inserted. A chuck support 20 is fixed to the rod of the cylinder 18. The chuck support 20 is U-shaped in plan view, and rotatably supports a chuck mounting member 22 to which a parallel chuck 21 having a general structure is mounted. A torsion coil spring 24 is attached to the rotating shaft 23. The torsion coil spring 24 is placed in a state in which its extension is suppressed by applying the lower ends of both ends to a pin 20a installed on the side surface of the chuck support 20 and a pin 22a installed on the side surface of the chuck mounting bracket 22, respectively. It

On the parallel chuck 21, centering claw mounting brackets 26, 26 having the centering claws 25, 25 mounted on the upper surface are installed, and the centering claws 25, 25 are opened and closed by the action of the parallel chuck 21. . A pad plate 27 is attached between the centering claws 25 on the chuck attachment fitting 22. A vacuum pad 28 is installed on the rear end of the chuck mounting bracket 22 of the pad plate 27, and a cylindrical work holder 29 with a hollow upper surface is provided on the tip between the centering claws 25 and 25. Is installed. Further, a cam follower 30 is installed on the side surface of the chuck mounting bracket 22, and a plate 32 with which the cam follower 30 abuts is installed on a stopper 31 installed on the cylinder bracket 17. 33 is a shock absorber installed in the stopper 31.

A support 34 is fixed on the curve generator main body 35, and the base 13 is fixed thereon. Reference numeral 36 denotes a shaft support plate vertically provided on the back side of the base 13, whereby an adjustment screw 37 having a tip screwed into the support 34 is supported by the shaft.

Reference numeral 38 denotes a rotary actuator installed on the base 13. By this, the reversing arm 40 having the vacuum pad 39 at the tip thereof is driven to rotate 180 degrees forward and backward (see FIGS. 2 and 3). 41 is a pair of vacuum pads 42,
It is a rodless cylinder that transfers 43 horizontally.
44 is a vacuum pad 42 through a pad plate 45,
It is a lifting cylinder that lifts 43.

To explain the operation of the above configuration, first, the unprocessed workpieces 50 stacked in the magazine are supplied onto the one-piece workpiece receiver 29 from the uppermost one by a pickup device (not shown). At that time, the centering claws 25, 25 are in an open state (state of FIG. 3), but after the work is supplied, the parallel chuck 21 closes the work 50 so that the work 50 is aligned with the centering claws 25, 25. It is chucked by and centered. In this way, the centering of the workpiece 50
It is done smoothly and surely because it is done with the horizontal position of 50.

Then, the cylinder 18 is activated and the chuck support 20
1 is moved forward (to the right in FIG. 1), the chuck attachment metal fitting 22 starts to rotate clockwise in FIG. 1 about the rotation shaft 23 due to the restoring force of the torsion coil spring 24 to expand. That is, the torsion coil spring 24 has two pins 20.
The extension is suppressed by a and 22a, and a pressing force is applied to the pin 20a in the counterclockwise direction in FIG. 1 and to the pin 22a in the clockwise direction. on the other hand,
The cam follower 30 continues to contact the side surface of the plate 32 by the force applied to the pin 22a. Then, when the chuck support 20 moves forward, the cam follower 30 tries to separate from the plate 32. However, since the pressing force of the screw coil spring 24 is continuously applied to the pin 22a, the chuck mounting bracket 22 makes the first rotation about the rotating shaft 23 as a shaft. Rotate clockwise in the figure. Therefore, the cam follower 30 continues to contact the plate 32, but if the chuck support 20 continues to move forward, the cam follower 30 eventually separates from the plate 32 and simultaneously contacts the back surface of the chuck support 20. At that time, the chuck mounting member 22 is set so as to be rotated by 90 degrees, and the pad plate 27 is in a vertical state. When the chuck support 20 further advances in that state, the unprocessed workpiece 50 chucked by the centering claws 25, 25.
Comes into contact with the lower vacuum pad 5 and is adsorbed there, and at the same time released from chucking by the centering claws 25.

After that, the chuck support 20 retreats, but the cam follower 30 abuts against the plate 32 and is pressed in the middle of the retreat. Then, the chuck mounting member 22 gradually rotates counterclockwise in FIG. 1 against the restoring force of the torsion coil spring 23, and is reversed 90 degrees when the chuck support 20 is most retracted. Return to the original horizontal state. Then, a new unprocessed workpiece is placed on the workpiece receiver 29.
Wait until 50 is delivered.

On the other hand, when the work 50 is adsorbed by the vacuum pad 5, the supply / discharge arm 3 is lowered to the lower end by the action of the unit cylinder 1. At the lower end, the core of the vacuum pad 4 is set so as to match the core of the chuck (collet chuck) 35a of the curve generator body 35. Then, when the pin cylinder 11 is operated, the feeding / discharging arm 3 approaches the curve generator main body 35, and the vacuum pad 4 attracts the processed work 51 chucked by the chuck 35a. Thereafter, the chucking force on the chuck 35a side is released, and the pin cylinder 11 moves forward to separate the machined work piece 51 from the chuck 35a.

Subsequently, the unit cylinder 1 moves up, but at that time, the stopper cylinder 6 is in a contracted state, and the receiving plate 10 of the unit cylinder 1 hits the stopper 7 (more specifically, the shock absorber 9) during the extension operation,
Stop on the way. At that position, the core of the lower vacuum pad 5 matches the core of the chuck 35a. Then, the pin cylinder 11 is operated again to bring the vacuum pad 5 close to the chuck 35a, and the unworked workpiece 50 adsorbed by the vacuum pad 5 is loaded into the chuck 35a rotating in the released state. Then, the suction by the vacuum pad 5 is released, and the chuck 35a performs chucking.

To describe this point in detail, the workpiece 50 is pressed against the inner bottom surface of the chuck by the core push pin arranged at the center of the vacuum pad 5 when the chuck 35a is internally inserted. When the suction on the vacuum pad 5 is released in this state, the core push pin pushes the center core of the work 50, so that the work 50 is properly set in the chuck 35a without bending. Further, even when the work 50 is adsorbed in an eccentric state, it can be easily loaded into the chuck 35a by the action of the core push pin.

Then, the action of pin cylinder 11 causes vacuum pad 5
Was separated from the chuck 35a and the stopper plate 6 was extended, and the receiving plate was stopped halfway.
10 rises, and the feed / discharge arm 3 rises to the initial position. The vacuum pad 4 still adsorbs the machined work 51, but this work 51 moves forward when the unprocessed work 50 is adsorbed to the vacuum pad 5 by advancing with the pad plate 27 vertical as described above. Adsorbed on Pat 28 and delivered. Therefore, when the pad plate 27 is in the horizontal state and returned to the original position, the vacuum pad 28 horizontally attracts the processed work 51 (FIG. 1). The processed work 51 is conveyed from there to the next step (back surface processing).

In the illustrated example, this processed workpiece 51 is a reversing arm.
It is attracted to the vacuum pad 39 of 40 from above, and is rotated 180 degrees by the action of the rotary actuator 38 to be turned upside down. Then, it is adsorbed to the vacuum pad 43 of the transfer section and sent to the next step by the action of the rodless cylinder 41.

The autoloader according to the present invention repeats the above steps.

[Effect of device]

Since the present invention is as described above, by incorporating it in the curve generator, it is possible to fully automate the processes such as supply, transfer, and recovery of the work, and there is no unnecessary movement in each process, and the work efficiency is greatly improved. There is an effect that it can be improved and the work can be centered smoothly and surely.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a plan view thereof. Explanation of symbols 1 …… Unit cylinder 2 …… Cylinder plate 3 …… Supply / discharge arm 4, 5, 28, 39, 42, 43 …… Vacuum pad 6 …… Stopper cylinder 7 …… Stopper 11 …… Pin cylinder 13… … Base 18 …… Cylinder 20 …… Chuck support 21 …… Parallel chuck 22 …… Chuck mounting bracket 24 …… Screw coil spring 25 …… Centering claw 26 …… Centering claw mounting bracket 27 …… Pat plate 29 …… Workpiece Receiving 30 …… Cam follower 32 …… Plate 35 …… Curve generator

Claims (1)

(57) [Scope of utility model registration request] 1. A pin cylinder is provided on a base installed via a support on a curve generator, and a cylinder plate which is horizontally transferred by the pin cylinder is vertically attached to a rod of the pin cylinder. A unit cylinder and a stopper cylinder that restricts the stroke of the unit cylinder are installed vertically on the cylinder plate, and a feed / discharge arm equipped with two upper and lower vacuum pads is attached to the lower end of the rod of the unit cylinder, and the base is provided. The cylinder is installed sideways through the cylinder bracket, the chuck support is attached to the rod, and the chuck support is equipped with a parallel chuck that opens and closes a pair of centering claws, and is constantly rotated downward by a screw coil spring. The chuck mounting bracket provided with is attached to the chuck mounting bracket, and a pad plate in which a centering work receiver and a discharging vacuum pad are arranged side by side is provided on the chuck mounting bracket. A cam follower that comes into contact with the plate fixed to the cylinder bracket by the restoring force of the screw coil spring, and the chuck mounting bracket is rotatable by the restoring force of the screw coil spring as the cylinder moves forward. At the same time, the pad follower fixed to the chuck mounting bracket is arranged so that the cam follower is disengaged from the plate and brought into contact with the bottom surface of the chuck support so that the pad plate is held in a vertical state when the cylinder advances to a predetermined position. , When the cylinder is most advanced, The unworked workpiece that has been scraped is brought into contact with the lower vacuum pad of the feeding / discharging arm at the rising end, and the processed workpiece adsorbed by the upper vacuum pad of the feeding / discharging arm is the discharging vacuum of the pad plate. The stroke is adjusted so as to come into contact with the pad, and the unit cylinder is lowered in two steps so that the two vacuum pads of the supply / discharge arm face the chuck of the curve generator. Loader.