JPS6334829Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a machined part take-out device for an automatic machine.

Conventionally, a machine has a plurality of stations that hold workpieces and conveys each workpiece intermittently, for example, a workpiece conveyance path such as a turntable is provided, and a tool head is provided on this workpiece conveyance path to perform predetermined processing on the workpiece. Processing machines are often used. In order to save labor, it is necessary to automate the supply of workpieces and the removal of workpieces after processing. As a means for taking out the workpiece, a vertical movement mechanism such as a cylinder having a chuck at the bottom is provided on a horizontal movement mechanism that reciprocates between the workpiece conveyance path and a predetermined position outside the path, and the vertical movement mechanism is lowered. Often used are structures in which the workpiece is held by a chuck, the vertical movement mechanism is raised, the horizontal movement mechanism is moved to the outside of the workpiece conveyance path, and then the vertical movement mechanism is lowered to move the workpiece from the chuck to a predetermined location. has been done. However, this series of movements is long even in one direction, and the processing capacity per unit time is extremely low. Furthermore, since a plurality of movement mechanisms and drive units are required, the number of manufacturing steps increases and timing adjustment is difficult.

This invention was made in view of the above-mentioned points, and the object thereof is to provide a machined part retrieval device for an automatic machine that has a simplified structure and is extremely easy to manufacture.

This device connects a holding mechanism and a release mechanism to a moving body that reciprocates, and also connects a movable chute to either the moving body or the holding mechanism, and retracts the movable chute from the direction of movement of the moving body. while moving the moving body along with the holding mechanism toward the workpiece conveyance path, causing the holding mechanism to hold the workpiece,
The moving body is moved away from the workpiece conveyance path along with the holding mechanism, and in conjunction with this movement, the movable chute is advanced inward to face the holding mechanism, which is linked to the latter half of the movement of the moving body away from the workpiece conveyance path. The workpiece is released from the holding mechanism by the release mechanism, and the workpiece is slid down to a predetermined position by the movable chute.Therefore, by reciprocating one moving body, it is possible to approach the workpiece conveyance path.
It is possible to perform various operations such as holding the workpiece, moving the workpiece away from the transport path, advancing the movable chute, releasing the workpiece holding state, and transporting the workpiece to a predetermined position.
This makes it possible to use only one drive unit and moving body, reducing manufacturing man-hours and making adjustments easier. Furthermore, it is configured to shorten the operating cycle and significantly increase processing capacity per unit time. It is something.

A first embodiment of this invention will be explained based on FIGS. 1 to 3. Reference numeral 1 denotes a turntable, only a portion of which is shown, which serves as a workpiece conveyance path, and a plurality of jigs 3 each holding a workpiece 2 are fixed at equal pitches on this turntable 1. Above the turntable 1, there is a tool head (not shown) that holds the tool 4 and a support frame 5.
are arranged side by side.

Next, the support frame 5 holds an air cylinder 6 which is a driving part. A holder 8, which is a moving body, is detachably connected to the lower part of the spindle 7 of the air cylinder 6. A holding mechanism 9 for holding the workpiece 2 and a release mechanism 10 for releasing the workpiece holding state are connected to the holder 8. The holding mechanism 9 includes a plurality of movable elements 1 which are urged inwardly by a spring 13 at the bottom of a cylindrical body 12 having a shaft portion 11 which is held by the holder 8.
4 is attached so that it can slide freely in the radial direction. The other release mechanism 10 connects one end of a plurality of shafts 16 to a stripper ring 15 connected to the holder 8 via the shaft portion 11 of the cylinder 12, and allows these shafts 16 to freely slide into the cylinder 12. The stop ring 15, shaft 16, and press plate 17 are always urged upward by a spring 18. Further, a rectangular plate 19 is fixed to the cylindrical body 12, and a guide shaft 21 inserted through the stripper plate 20 connected to the air cylinder 6 and the support frame 5 is erected on the plate 19. ing.

A movable chute 22 is then provided.
This movable chute 22 has a side plate 23, a bottom plate 24, and a back plate 25 that face each other, and a part of the side plate 23 is attached to both sides of the stripper plate 20 or to another fixed part, and is rotatable about a pin 20a. is connected to. Moreover, this movable chute 22 is operatively connected to the holding mechanism 9 or the holder 8. That is, pins 26 are provided upright on both sides of the plate 19 fixed to the holding mechanism 9, and grooves 27 that engage with these pins 26 are formed in the side plate 23 of the movable chute 22. As shown in FIG. 1, the holding mechanism 9 is lowered and the movable chute 22
When the bottom plate 24 is retracted laterally, the groove 27 is formed to have an inclined portion that extends vertically upward from the lower end and bends from the upper part to the opposite side of the fixed chute 28. There is. This inclined portion is inclined with respect to the operating direction of the pin 26, that is, with respect to the vertical direction. One end of the fixed chute 28 is open toward the outer periphery of the turntable 1, and the other end is inclined toward a predetermined position outside the turntable 1, for example, toward the next process.

In such a configuration, the workpieces 2 are successively supplied to the jig 3 on the turntable 1, and the turntable 1 is intermittently rotated at a constant timing. The workpiece 2 processed by the tool 4 moves to the next station, and the workpiece 2 after processing moves to the next station, and the workpiece 2
Take out. That is, from the state shown in FIG. 2, the spindle 7 of the air cylinder 6 slides downward, and the holder 8 and the cylinder 12 descend. At this time, since the upper part of the groove 27 formed in the movable chute 22 is inclined toward the opposite side of the fixed chute 28, the movable chute 22 is moved in conjunction with the downward movement of the pin 26 at the beginning of the downward movement of the holding mechanism 9. Rotate as shown in Figure 1. Therefore, the cylindrical body 12 can be moved to the bottom plate 24 of the movable chute 22 with sufficient timing.
descend without interfering with the The mover 14 of the cylindrical body 12 is retracted outward by the component force generated by the contact with the workpiece 2, and then resiliently holds the workpiece 2 by the force of the spring 13. Next, spindle 7
The holder 8 and the cylinder 12 rise, but the pin 26
When it reaches the upper part of the groove 27, the groove 27 becomes inclined and the pin 26 approaches the center of rotation of the rotation chute 22, so that the rotation chute 22 rotates inward at an increased speed. In the latter stage of the upward movement of the cylinder 12 and the holder 8, the stripper ring 15 is pressed by the stripper plate 20, so that the pressing plate 17
pushes workpiece 2 down. The movable chute 22 receives the workpiece 2 and slides it down onto the fixed chute 28.

In this way, by reciprocating the air cylinder 6 once, the entire operation from holding the workpiece 2 to moving the workpiece 2 to a predetermined position is completed, so that the cycle time is extremely short. Therefore, the processing capacity per unit time can be greatly increased. Moreover, only one air cylinder 6 serving as a driving portion and one holder 8 serving as a moving body are required, which simplifies the structure, facilitates assembly and adjustment work, and significantly reduces the number of manufacturing steps.

Note that the workpiece 2 may be slid directly to a predetermined position by the movable chute 22, and the fixed chute 28 may be omitted. Moreover, although the movable chute 22 is rotated, it may be slid in the horizontal direction. However, in this embodiment, the movable chute 2
2 of the movable chute 22 in a small space.
4 can be retracted from the position facing the holding mechanism 9 to the retracted position.

In addition, in an automatic machine in which the turntable rotates within a vertical plane, the direction of motion of the air cylinder 6 may be changed to horizontal. The moving body may be driven by using a motor as the drive unit and converting the rotation of the motor into linear motion using gears or racks.

Further, as shown in FIG. 4, a permanent magnet 30 or an electromagnet may be provided in the cylinder 12, and if the workpiece 2 is made of iron, a holding mechanism 29 may be used that attracts and holds the workpiece 2 by magnetic force.

Next, a second embodiment of this invention is shown in FIG. The same parts as in the previous embodiment are designated by the same reference numerals, and the description thereof will be omitted. In this embodiment, a holding mechanism 3 is constructed by attaching an annular suction cup 31 made of a soft material such as rubber to a cylindrical body 12.
2 is used to mainly hold a flat workpiece 38. In this case, the shaft 11 of the cylinder 12
A ventilation hole 33 communicating with the atmosphere is formed in the press plate 1.
A conical protrusion 34 for closing the ventilation hole 33 and a through hole 35 are formed in the cylindrical body 12 to form a release mechanism 36, and a piping joint 37 is formed in the cylindrical body 12. If it is connected to a negative pressure source (not shown), the workpiece can be reliably sucked. The negative pressure at this time is not strong enough to pull the pressing plate 17 downward against the force of the spring 18. In the latter half of the rising movement of the cylinder 12, the stripper ring 1
5 is pressed by the stripper plate 20, the pressing plate 17 descends while bending the spring 18,
The inside of the cylindrical body 12 is connected to the atmosphere through ventilation holes 33 and 35. At this time, by blocking the connection between the piping joint 37 and the negative pressure generation source, the flat workpiece 38 is lowered and received by the movable chute 22 .

Since this device is configured as described above, it is possible to complete the series of operations from holding the workpiece to moving the workpiece to a predetermined position outside by making one reciprocating motion of one moving body, thus reducing the cycle time. It is possible to shorten the time and increase the processing capacity per unit time, it is possible to use only one moving body and a driving part, and it is possible to link the holding mechanism, release mechanism, and movable chute to the movement of the moving body. This has the effect of reducing the number of parts, facilitating adjustment and assembly work, and reducing manufacturing man-hours.

[Brief explanation of the drawing]

Figure 1 shows the first embodiment of this invention, a side view showing the state when a part is cut out and a workpiece is held, and Figure 2 is a side view showing the state when a part is cut out and the workpiece is released. 3 is a perspective view thereof, FIG. 4 is a vertical sectional side view of a portion showing a modified example of the holding mechanism, and FIG. 5 is a portion showing a second embodiment of this invention. FIG. 1... Turntable (workpiece conveyance path), 2
...Work, 6...Air cylinder (drive part),
8... Holder (moving body), 9... Holding mechanism, 10
...Release mechanism, 22...Movable chute, 29...
Holding mechanism, 32... Holding mechanism, 36... Release mechanism, 38... Work.

Claims (1)

[Scope of utility model registration request] A moving body connected to a drive unit that approaches and moves away from a workpiece conveyance path is provided, a holding mechanism that holds the workpiece conveyed by the workpiece conveyance path, and a later operation of the movement body that moves away from the workpiece conveyance path. a release mechanism for releasing the workpiece held by the holding mechanism in conjunction with the movement body, and a movable chute for sliding the workpiece released from the holding mechanism by the release mechanism to a predetermined position. In this case, either the holding mechanism or the moving body and the movable chute are connected to the holding mechanism so that the movable chute is retracted out of the moving direction of the holding mechanism when the holding mechanism moves toward the workpiece conveyance path. Alternatively, a machined parts takeout device for an automatic machine, characterized in that the device is connected by a groove having an inclined portion inclined with respect to the direction of movement of the moving body and a pin that engages with the groove.