JPH0531599A - Method and device for automatically taking out lower pestle of rotary powder molding machine - Google Patents

Abstract

PURPOSE:To allow an operation in a hermetically closed state by constituting a lower pestle in such a manner that this lower pestle can be automatically taken out of a turn table to the outside when needed. CONSTITUTION:This device for automatically taking out the lower pestle of the rotary powder molding machine consists of a pulling down device 36 which pulls down the lower pestle 3 by a pulling down air cylinder 15 when the lower pestle 3 is in a lower pestle taking out position, a pestle taking out robot 37 which holds the lower pestle 3 by a chucking pawl 22 and lowers the lower pestle and a pushing device 38 which pushes the above-mentioned pulling down device 36, etc., into the central direction of the machine by a pushing air cylinder 13. This method consists in taking the lower pestle 3 out of the turn table 1 to the outside when needed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lower punch automatic take-out method and apparatus for a rotary powder molding machine, characterized in that the lower punch can be taken out from a turntable.

[0002]

2. Description of the Related Art Conventionally, in order to take out a lower punch from a rotary table, a lower punch rail is removed, the rotary table is placed at a lower punch take-out position, and a worker manually takes out the lower punch. Further, sometimes, due to the nature of the powder, the lower punch is difficult to take out because it is squeezed in the die hole or the lower punch holding portion, and in this case, the lower punch was sometimes taken out using a lever.

[0003]

In the prior art, the work is troublesome because it is a manual work, the work in a sealed state is impossible, and the work cannot be automated. Had the problem.

The present invention has been made in view of the above problems of the prior art, and its object is to automatically take out the lower punch from the rotary disk when necessary. Therefore, it is an object of the present invention to provide a lower punch automatic take-out device of a rotary powder molding machine capable of performing work in a sealed state.

[0005]

In order to achieve the above-mentioned object, the present invention is designed such that a large number of mortars are fitted on the circumference of a turntable,
In a rotary powder molding machine that compresses powder by filling a die hole with powder and passing the upper and lower punches between the upper and lower rolls for compression, the lower punch is at the lower punch take-out position. At this time, the lower punch is pulled down by the pull-down air cylinder, then the chucking jaws of the punch take-out robot sandwich the lower punch, and then the push-in air cylinder pushes the pull-down air cylinder etc. toward the machine center, and then the above-mentioned checkered jaws. (EN) Provided is a lower punch automatic take-out method for a rotary powder molding machine, characterized in that the lower punch can be taken out from the rotary disk by lowering the lower punch.

The related invention is an invention of an apparatus directly used for carrying out the method invention of the above specified invention. When the lower punch is in the lower punch take-out position, a lowering apparatus for lowering the lower punch by a lowering air cylinder. And a punch take-out robot that the chucking claw sandwiches the lower punch and lowers it, and a push-in device that pushes the above-mentioned pull-down device toward the center of the machine with a push-in air cylinder, and the lower punch can be taken out from the turntable when necessary. This is an automatic lower punch ejector for a rotary powder molding machine characterized by the above.

[0007]

When the lower punch is in the lower punch take-out position, it is pulled down by the pulling air cylinder of the pulling device. Subsequently, the lower punch is sandwiched by the chucking claws of the punch take-out robot.

Subsequently, the pull-down device and the like are pushed toward the center of the machine by the pushing air cylinder of the pushing device. Finally, the lower punch is automatically taken out of the turntable by lowering the chucking claw of the pulling device.

The above steps (A in FIG. 2,
By automatically repeating (B, C, D, E), the lower punch can be automatically taken out of the turntable or machine, but if the lower punch is automatically fitted into the rotation number, By reversely operating the above-mentioned steps, the lower punch can be automatically incorporated.

[0010]

EXAMPLES Examples will be described with reference to the drawings. FIG. 1 shows an embodiment of the lower punch automatic take-out method and apparatus of the rotary powder molding machine of the present invention, and FIG.
It shows the schematic of each process.

In FIG. 1, there is a motor, a worm, etc., which are not shown in the inside of the square base 19. In the worm box, the worm gear 20 rotates the standing shaft 4 and the keys 5 rotate the turntable 1. Let

The fixed base 18 has a slide receiving base 17 attached thereto, and is attached to the square base 19 by bolts.
The sliding surface of the turntable 1 is received via a thrust bearing 33.

A large number of dies 2 are fitted on the circumference of the turntable 1, the lower punch tip 24 of the lower punch 3 is inserted into the hole of the mill 2, and the punch holding portion of the turntable 1 is used for the above. Lower punch 3 Lower punch body 3
5 is inserted so as to be vertically movable.

The lower punch 3 is a lowering device (not shown),
Move while sliding on the quantity rail, compression roll, push-up rail, etc. Then, a take-out position of the lower punch 3 is provided between the push-up rail and the lowering device, and when the rotation of the turntable is stopped and the rotary movement is performed by one-pitch operation, the lower punch 3 moves to the take-out position of the lower punch 3. Stop on rail 7.

The cam 6 close to the lower punch head 25 of the lower punch 3
Is attached to the rail 7 with bolts, and the rail 7 is attached to the pedestal of the rail shaft 8 with bolts.

The rail shaft 8 has a stopper base 9
The rotation stopper key 26 holds the rail shaft 8 so that it can be operated only up and down. The lower end of the rail shaft 8 is screwed with the tip end of the pull-down piston 10 and is fixed with a stopper washer 28 and a nut 34.

The pull-down air cylinder 15 is attached to the push-in bracket 12 by a bolt and operates the pull-down piston 10.

The tip of the push-in piston 14 is attached to the push-in bracket 12 by a double nut 32.

The push-in air cylinder 13 is fixed to a bracket 21 by a bolt, and the bracket 21 is attached to the front surface of the slide receiving base 17.

The slide base 11 has a stopper base 9 attached to the upper part thereof by bolts, and the push-in bracket 12 is attached to the lower part thereof by countersunk bolts, and is slidably mounted on the slide receiving base 17. It is placed.

A slide guide 16 for sandwiching the slide base 11 placed above the slide support base 17 and a lifting plate 29 for preventing floating are attached together by bolts to the slide base 17. The direction of forward and backward movement of 11 is stabilized.

The pull-down air cylinder 15 moves the pull-down piston 10 in and out, that is, moves up and down, depending on the direction in which air is blown.

The push-in air cylinder 13 moves the push-in piston 14 in and out, that is, moves it forward and backward, depending on the direction in which air is blown.

The operation will be described with reference to FIGS. 1 and 2.
From the lower punch removal position (A in FIG. 2), pulling device 36
When air is blown from above the air pipe 30 above the pull-down air cylinder 15, the pull-down piston 10
Since the rail shaft 8 and the rail 7 are pulled downward and the cam 6 hooks the lower punch head 25 of the lower punch 3, the lower punch 3 is pulled down, and the bottom of the rail shaft 8 is brought into contact with the stopper surface 9 of the stopper base 9. Upon hitting, the lower punch 3 falls below the die 2 and stops at a fixed position (B in FIG. 2).

When a part of the lower punch body portion 35 of the lower punch 3 is lowered to the lower part of the turntable 1, the chucking pawl 22 of the air chuck 23 of the punch take-out robot 37, which is only partially shown, is The lower punch body portion 35 is sandwiched (C in FIG. 2).

When air is blown behind the pushing air cylinder 13 of the pushing device 38, the cam 6, the rail 7, the rail shaft 8, the stopper base 9, the pulling down piston 10, the slide base 11, the pushing bracket 12 and the like are pushed in, and the piston 14 is pushed. Moves toward the center of the machine, the lower punch 3 is sandwiched between the chucking claws 22 and is in a suspended state (D in FIG. 2).

Then, the chucking claw 22 is moved downward by the punch take-out robot 37, and the lower punch 3 is taken out of the turntable 1 and carried out of the machine (E in FIG. 2).

When one step of taking out the lower punch 3 is completed, the cam 6 and the lowering air cylinder 15 are retracted by the pushing air cylinder 13 so as to be separated from the central portion of the machine. When air is blown from the lower pipe 31, the cam 6 and the like return to their original positions.

By automatically repeating the above steps, the lower punch can be automatically taken out of the turntable and the machine. However, when the lower punch is automatically fitted to the turntable, Can reverse the above-mentioned steps to automatically install the lower punch.

[0030]

Since the present invention is configured as described above, it has the following effects. That is, since the lower punch can be automatically taken out from the turntable when necessary, the work is facilitated. Further, since the work can be performed in the sealed state, unmanned operation remote control can be performed not only when the machine is operating but also when the lower punch is taken out.

[Brief description of drawings]

FIG. 1 is a longitudinal cross-sectional view of essential parts showing an embodiment of a lower punch automatic take-out method and an apparatus therefor of a rotary powder molding machine of the present invention.

2 is a schematic view of the lower punch automatic take-out method and the respective steps of the apparatus of the rotary powder molding machine shown in FIG. 1, where A is the lower punch take-out position stopped by one-pitch rotation, and B is the pull-down position. The position of the lower punch that has been lowered to the stopper table by the pulling air cylinder of the device, C is the position of the lower punch that has been air-chucked by the punch take-out robot, and D is the cam, rail, pulling air cylinder, etc. by the pushing air cylinder of the pushing device. The position of the lower punch where the lower punch holding part has been disengaged, E is the position of the lower punch disengaged from the turntable by the punch take-out robot.

[Explanation of symbols]

1 turntable 2 mortars 3 Lower punch 4 Vertical shaft 5 keys 6 cams 7 rails 8 rail shaft 9 Stopper stand 10 Down piston 11 slide stand 12 Push-in bracket 13 Push-in air cylinder 14 Push-in piston 15 Pull down air cylinder 16 Slide guide 17 Slide cradle 18 Fixed base 19 square stand 20 Worm Gear 21 bracket 22 Checking claws 23 Air Yak 24 Lower punch 25 Lower pestle 26 Non-turn key 27 Contact surface 28 per washer 29 Presser plate 30 On air pipe 31 under the air pipe 32 double nuts 33 Thrust bearing 34 nuts 35 Lower punch body 36 Pulling device 37 Punch removal robot 38 Pushing device

Claims (2)

[Claims] 1. A large number of mortars are fitted on the circumference of a turntable,
In a rotary powder molding machine that compresses powder by filling a die hole with powder and passing the upper and lower punches between the upper and lower rolls for compression, the lower punch is at the lower punch take-out position. At this time, the lower punch is pulled down by the pull-down air cylinder, then the chucking jaws of the punch take-out robot sandwich the lower punch, and then the push-in air cylinder pushes the pull-down air cylinder etc. toward the machine center, and then the above-mentioned checkered jaws. The lower punch of the rotary powder molding machine is characterized in that the lower punch can be taken out from the turntable by lowering the lower punch. 2. A pulling-down device for pulling down the lower punch with a lowering air cylinder when the lower punch is in the lower punch take-out position, a punch take-out robot for lowering the lower punch with a chucking claw, and a push-in air cylinder. A lower punch automatic take-out device for a rotary powder molding machine, characterized in that it comprises a push-in device for pushing down a pulling device and the like toward the machine center, and the lower punch can be taken out from the turntable when necessary.