JPH021207Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a quantitative supply device for workpieces, and more specifically, for example, a device for aligning and treating workpieces such as glass bulbs, which are components of DHD type diodes, without vibration. The present invention relates to a quantitative supply device for feeding a workpiece to a tool.

BACKGROUND ART In order to send a workpiece such as a glass bulb 5, which is a component of a DHD type diode, onto an alignment jig 4, a hopper 3 is equipped with a vibrator 1 and an inclined delivery plate 2 as shown in FIG.
is used.

Glass bulb 5 stored in hopper 3
is delivered from inside the hopper main body 3a onto the delivery plate 2 while being vibrated by the vibrator 1, slides on the upper surface of the delivery plate, and is supplied onto the alignment jig 4 from its tip.

Problems to be Solved by the Invention When the glass bulbs 5 in the hopper body 3a are vibrated, the glass bulbs 5 collide with each other and are damaged, generating glass powder. If a workpiece, such as a DHD diode, is manufactured with this glass powder still attached, the quality of the product will naturally deteriorate, resulting in problems such as a high number of defective products and a rise in manufacturing costs. . In addition, as an environmental health problem, there is a risk that workers may inhale the glass powder or that it may cause respiratory problems or skin problems if it comes into contact with the skin.

The main object of the present invention is to provide a workpiece quantitative feeding device that can solve the above-mentioned problems found in general-purpose hoppers equipped with vibrators.

Means for Solving the Problems In view of this objective, the present invention provides a mechanism for passing the workpiece between a funnel-shaped outer shell member having a workpiece discharge port opened at the lower end and an inner wall surface of the outer shell member. A flexible bag that maintains a gap and is suspended inside the outer shell member with its top open, and a bag lifting mechanism that provides a lifting motion to a wire fixed to the bottom end of the bag. The gist of this is a quantitative supply device for workpieces.

Function By driving the bag lifting mechanism and lifting the wire, the bottom of the bag rises at a gentle speed. As a result, the workpiece stored in the bag,
For example, the glass bulb, which is a component of a DHD type diode, overflows little by little from the upper edge of the bag.
The workpieces pass through the passage gap formed between the inner wall surface of the outer shell member and the outer peripheral surface of the bag body, and are aligned at a substantially constant discharge speed from the discharge port provided at the lower end of the outer shell member. Sent out of the system.

Embodiment FIG. 1 is a vertical cross-sectional view of a main part illustrating the structure of the device of the present invention, and FIGS. 2A to 2C are explanatory diagrams showing the quantitative supply state of the workpiece in relation to the slow lifting operation of the bag body. be.

As shown in FIG. 1, the device of the present invention has a workpiece 10 at its lower end, for example, an outlet 1 of a microcylindrical lead glass bulb 10 which is a component of a DHD type diode.
A passage gap G for the workpiece 10 is maintained between the funnel-shaped outer shell member 12 with the upper surface opened and the inner wall surface 12a of the outer shell member, and the outer shell member 1 is
A bag body 13 made of a flexible material (for example, a knitted fabric made of polyamide fibers) is suspended inside the bag body 2, and a wire 14 fixed to the bottom end 13b of the bag body 13 is provided with a lifting motion. It is configured by a lifting mechanism 15.

In the illustrated embodiment, the lifting mechanism 15 for the bag 13 includes a motor 15a with a speed reducer, a pinion 15b fixed to its power output shaft, and a rack 15c on the side body portion that meshes with the pinion 15b. The lifting rod 15e has a locking member 15d attached to the upper end of the wire 14 at the lower end. Any lifting mechanism may be used as long as it can provide a slow lifting stroke, for example, a fluid pressure cylinder mechanism equipped with a speed control mechanism may be used to slowly lift the bag 13. Can transmit strokes.

On the other hand, the bag body 13 has an inner wall surface 12 of the outer shell member 12.
In order to maintain a passage gap G for the workpiece 10 between the outer shell member 12 and the workpiece 10, the diameter of the upper opening 13a is selected to match the diameter of the outer shell member 12 and the dimensions of the workpiece 10. Outer shell member 1
The diameter of the discharge port 11 that opens at the lower end of the workpiece 1
It is selected according to the dimensions of 0.

Hereinafter, with reference to FIGS. 2A to 2C, the operation of quantitatively supplying the workpiece 10 by the apparatus of the present invention will be described.

First, as shown in FIG. 2A, the bag 13 is filled with the workpiece 10 with the wire 14 positioned at the lowest end, and the lifting mechanism 15 for the bag 13 is activated in this state. As the lifting stroke of the wire 14 increases, the work 10 begins to overflow from the upper edge of the bag 13. The overflowing works 10 pass through the passage gap G formed between the outer peripheral surface of the bag body 13 and the inner wall surface 12a of the outer shell member 12, fall into the discharge port 11, and are aligned within the discharge port. While the alignment jig 1 is placed below the
6 is supplied in quantity.

As the lifting stroke of the wire 14 increases, the bottom of the bag 13 is lifted upward at a gentle speed, and as a result, the bottom of the bag 13 is lifted upward as shown in FIG. 2B.
The overflow state of the workpiece 10 from the upper surface edge continues. At this time, if necessary, it is also possible to make the supply amount per unit area of the alignment jig 16 uniform by giving the outer shell member 12 and the bag body 13 lateral movement along the upper surface of the alignment jig 16.

When the wire 14 is lifted to the uppermost position,
The quantitative supply operation of the work 10 stored in the bag body 13 is completed, and the bag body 13 assumes an inverted posture with the bottom surface facing up as shown in FIG. 2C. In this state, by starting a suction device (not shown), fine glass powder adhering to the inner surface of the bag body 13 is suctioned and removed, and then the lifting mechanism 15 of the bag body 13 is redirected in the reverse direction. By activating it, the bag body 13 is returned to its original position within the outer shell member 12. Thereafter, by repeating the above-mentioned operation, the workpiece 10 can be fed in a fixed quantity onto the alignment jig 16 from inside the bag body 13.

When carrying out the present invention, in order to prevent the overflowing workpiece 10 from colliding with the inner wall surface 12a of the outer shell member 12 and damaging it, the inner wall surface 12a may be made of a flexible material such as foamed polyurethane, if necessary. It is advantageous to apply a fabricated lining layer (not shown).

Effects of the Invention As can be understood from the above explanation, by using the device of the present invention, a workpiece, such as a glass bulb, can be fed in a fixed quantity without vibration. Therefore, even when the workpiece to be supplied in a fixed amount is a fragile glass bulb, damage due to vibration can be effectively prevented.

In this way, the present invention solves the problems found in conventional quantitative feeding devices, such as a decline in product quality and a rise in manufacturing costs due to damage to the workpiece, and a deterioration of the working environment due to the generation of fine powder. It is possible to exhibit remarkable effects as an almost complete solution.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a main part illustrating the structure of the device of the present invention, and FIGS. 2A to 2C are explanatory diagrams showing the quantitative supply state of the work in relation to the slow lifting operation of the bag. Further, FIG. 3 is a sectional view of a main part of a hopper equipped with a vibrator, which is a well-known quantitative supply device. 10... Work, 11... Work discharge port, 12
...Outer shell member, 13...Bag body, G...Work passage gap, 14...Wire, 15...Bag body lifting mechanism.

Claims (1)

[Scope of utility model registration request] a funnel-shaped outer shell member having a workpiece discharge port opened at its lower end; and a flexible bag suspended with the upper surface open while maintaining a workpiece passage gap between the inner wall surface of the outer shell member; 1. A quantitative supply device for a workpiece, comprising: a bag lifting mechanism that gives a lifting motion to a wire fixed to the bottom end of the bag.