JPH0235693Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for automatically separating and discharging stacked chips one by one, and particularly to a separating and dispensing apparatus characterized by a pawl provided on a pinion.

Already known is a tip separation and delivery device in which a rack that slides along a substrate drives a reciprocating pinion that has a claw that determines whether to hold or release the tip depending on the rotation angle. It is being

However, when attempting to drive the rack with a solenoid device or the like, the suction force of the solenoid movable core and the spring force of the return spring pose design problems.

Therefore, an object of the present invention is to reduce the spring force of the spring by applying a force in the return direction to the pinion when the pinion returns due to the spring force of the return spring. This reduces the capacity of the solenoid device and at the same time allows the pinion to return reliably, thereby improving the reliability of the unloading operation.

The major feature of the pinion is that the force acting in the return direction of the pinion is based on the weight of the tip without using any special means.

Examples will be described below with reference to the drawings.

First, in order to explain the drive device, Figs.
See diagram. FIG. 1 is a plan view of an embodiment of the tip separation and delivery device according to the present invention, and FIG. 2 is a side view.
Figure 3 is an exploded perspective view with a part cut away;
The figure is a perspective view of the rack. 1 to 4, a solenoid coil 1 is fixed to a solenoid mounting plate 3 by screws 2. In FIGS. One end of a solenoid movable iron core 1a is inserted into the solenoid coil 1. A shaft 4 is supported at the other end of the solenoid movable core 1a. The solenoid arm 5 is rotatably supported on the solenoid mounting plate 3 by a shaft 6, and constitutes a bell crank. A snap washer 7 is attached to the shaft 6. An elongated hole 8 and a spring hook hole 9 are provided at one end of the solenoid arm 5. The shaft 4 is slidably inserted into the elongated hole 8 and is supported by an E-shaped retaining ring 4a to prevent it from coming off. On the other hand, one end of a return spring 16 is hung in the spring hook hole 9.

A shaft 10 is supported at the other end of the solenoid arm 5 using an E-shaped retaining ring 11 to prevent it from coming off.

The solenoid mounting plate 3 is fixed to a base plate, ie, a lower cover 13, by screws 12.

A rack 14 is arranged on the lower cover 13, which is guided by its upper surface and by folded end surfaces 17, 17'. The rack 14 has a U-shaped groove 1 at one end.
5. This U-shaped groove 15 has the shaft 1
0 is slidably inserted through it. Note that in FIGS. 1 and 2, the rack 14 is connected to the upper cover 13.
It comes into contact with the right end bending surface 18 and stops.

Incidentally, a droplet release hole 19 is provided in the center of the lower cover 13. A plurality of pinions 20, 20' are rotatably disposed around this spout discharge hole. These pinions 20, 20'
is capable of reciprocating rotation around its pinion shafts 201, 201', and integrally includes first pawls 21, 21' and second pawls 22, 22' which are alternated in the circumferential direction. However, the first claw 21, 21' and the second claw 22, 22' may also be supported. Of course, gear portions 20a, 20'a are formed below the pinions 20, 20'. These gear parts 20a, 20'a mesh with the rack 14. Further, the upper end portions of the pinions 20, 20' are rotatably supported by the upper cover 23.

There is a tip release hole 19' in the center of the upper cover 23.
is provided. The upper cover 23 has screws 24, 2
4' is fixed to the lower cover 13. A spring hanger 25 is provided on the right side of the upper cover 23, and one end of the return spring 16 is hung there. Furthermore, rack guide portions 26, 26' are provided at the lower right side of the upper cover 23. Furthermore, a tip guide 27 is attached to the top surface of the upper cover 23 with screws 2.
It is attached by 8. The cup guide 27 is provided with a cup near end switch 29 and a switch lever 30.

Next, its operation will be explained. First, when the solenoid coil 1 is excited, the solenoid movable iron core 1
a is pulled downward. The movement of the solenoid movable iron core 1a at this time is transmitted to the solenoid arm 5 via the shaft 4, and the solenoid arm 5 is rotated counterclockwise about the shaft 6. The rack 14 is then moved to the left due to the mutual engagement of the shaft 10 and the U-shaped groove 15. This state is shown in FIG.

Here, connect the long hole 8 of the solenoid arm 5 and the rack 1.
4, the solenoid movable iron core 1
The vertical movement of a is converted into horizontal movement. In this way, the drive device has a structure that utilizes the rotational sliding motion between the elongated hole 8 and the shaft 4 and the rotational sliding motion between the shaft 10 and the U-shaped groove 15. By the way, since the structure is such that the rack 14 is guided by the end bent surfaces 17, 17' of the lower cover 13, the width direction dimension can be kept to the necessary minimum, and it is possible to automatically separate and send out the same kind of chips. It is also possible to use a plurality of devices next to each other. Moreover, since it has such a unitized structure, the unit can be replaced during maintenance, which saves time and effort.

Now, when the rack 14 moves to the left as described above, the gear portion 2 meshing with the rack 14
The pinions 20, 20' are rotated by the pinions 0a, 20'a, and the bottom one of the stacked chips is separated and sent downward. When the excitation of the solenoid coil 1 is stopped, the solenoid arm 5 is rotated clockwise by the return spring 16, the rack also moves to the right at the same time, and the pinions 20, 20' also rotate in the direction of the arrow in FIG. Return to the stop position.

Now, referring to FIG. 5, the pinion part will be explained. First pawls 21, 21', second pawl 22,
On the same circumference of 22', there are first notches 3, respectively.
1, 31' and a second notch 32, 32', and a first notch is provided on the upper end side of the tip of the first claw 21, 21' facing the first notch 31, 31'. Slanted portions 210, 210' are formed such that they become lower as they approach 31, 31'.

Such pinions 20, 20' are in the state shown in FIG. 6 when the tip is on standby, and the bottom tip 33 is held by the second pawls 22, 22'.

When the solenoid coil 1 is excited and the solenoid movable iron core 1a is attracted downward, the solenoid arm 5 rotates counterclockwise about the shaft 6 and moves leftward in the U-shaped groove 15 by the shaft 10. and move the rack 14 to the left.

As a result, the gear portions 20a, 20'a meshing with the rack 14 cause the pinions 20, 20' to move forward in the direction of arrow A in FIG.
The bottom tip 33 held by 2' is removed from the second claws 22, 22', and the second notch 33 is removed.
2,32' (Figure 7). Further, as can be seen from FIG. 7, the upper tip 33' of the bottom tip 33 is held by the first claws 21, 21'.

On the other hand, when the excitation of solenoid coil 1 stops,
In this position, the return spring 16 is stretched to the maximum and is therefore under strong tension. The solenoid arm 5 is rotated clockwise by the return spring 16, and at the same time the rack 14 is also moved to the right.

As a result, the pinions 20, 20' are also rotated in the direction B in FIG. , 21' upper end side inclined portion 210,
210' along substantially the first notch 31,
Approaching 31'.

Note that the stacking tips 3 resting on the inclined portions 210, 210' on the upper end side of the first claws 21, 21'
Figure 9 shows how loads are applied at points 3', 33''...

Also, in such a case, the weight of the stacked tips 33', 33'', which are larger than the tip 33', is determined by the slope portions 210, 210,
Applying force (F) to 210', the first claw 21,
Component force that tries to rotate 21'E in the direction of arrow B
Generate Fd. That is, stacking tips 33', 33''...
The load gives a force to rotate the pinions 20, 20' in the direction of arrow B, and substantially increases the return force of the pinions 20, 20'. Note that the tip 33' is detached from the first pawl 21, 21' due to the return of the pinions 20, 20', and is removed from the first notch 31, 3.
1' and is held by the second claws 22, 22'. This state can be understood by referring to FIG.

When the rack 14 returns to its initial position by the force of the return spring 16, the pinions 20, 20'
rotates in the return direction, and 3 of the stacked chips
3' rides on the inclined portions 210, 210', the amount of extension of the return spring 16 is reduced at this position, so the tension of the return spring 16 is reduced, and the lower cover 13, rack 14, pinion 20, Despite the frictional force between the racks 14 and 20', the loads of the stacking tips 33', 33''... act to promote the rotation of the pinions 20, 20' in the return direction, so the rack 14 cannot return completely, and the There is no problem that the rack 14 and the pinions 20, 20' stop at the same time, and both the rack 14 and the pinions 20, 20' can reliably return to their standby positions.

As described above, according to the present invention, when the pinion returns, the load of the tip helps the force in the direction of the return of the pinion, so the tension of the return spring may be weak, and this reduces the magnetic force that attracts the solenoid movable core. It leads to what you can do. Therefore, a small and low-power solenoid device can be used, and this makes it possible to provide an automatic separation and delivery device that can separate and send out stacked chips one by one at a low cost.

Furthermore, by forming the inclined portions 210, 210', the second claw 22,
Since the drop to 22' is smaller, the impact force on the tip is reduced and deformation of the tip can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the tip separation and delivery device according to the present invention, FIG. 2 is a side view, FIG. 3 is an exploded perspective view with a portion cut away, and FIG.
The figure is a perspective view of only the rack, Figure 5 is a perspective view of the pinion part, Figures 6 to 9 are explanatory diagrams of the operation of an embodiment of the present invention, and Figure 6 is a perspective view of the pinion when it is stopped.
Fig. 7 shows how the pinion is moved, Fig. 8 shows how the pinion is returned, and Fig. 9 shows how the load is applied to the tip when the pinion returns. 1...Solenoid coil, 3...Solenoid mounting plate, 4...Shaft, 5...Solenoid arm forming a bell crank, 6...Shaft, 8...Elongated hole, 10
...Axis, 13...Lower cover that becomes the board, 14...
Rack, 15... U-shaped groove, 16... Return spring, 19... Release hole, 20, 20'... Pinion,
21, 21'...first claw, 22,22'...second
claw, 31, 31'...first notch, 32, 3
2'...second notch, 210, 210'...slanted portion.

Claims (1)

[Scope of utility model registration request] A device for separating and sending out cops one by one from stacked cops, which includes a substrate having a discharge hole, a plurality of pinions attached to the substrate around the discharge hole, and a pair of pinions arranged on opposite sides of the discharge hole. a rack, the rack being guided by an upper surface of the substrate and an end fold surface;
A U-shaped groove formed at the end of the rack, a mounting member provided on the back surface of the board, a bell crank attached to the mounting member, and a U-shaped groove provided at one end of the bell crank, fitted into the U-shaped groove. a first engagement shaft, an elongated hole provided at the other end of the bellcrank, a second engagement shaft inserted into the elongated hole, a solenoid coil attached to the mounting member, and inserted into the solenoid coil. a solenoid movable iron core connected to the second engagement shaft, and a spring biasing the bell crank in a direction opposite to the driving direction when the solenoid coil is energized; A first pawl and a second pawl are provided so as to mesh with the pinion and rotate each pinion reciprocatingly around the shaft, and are provided with a first pawl and a second pawl alternately in the circumferential direction of the pinion, and the first pawl and the second pawl are arranged alternately in the circumferential direction of the pinion. A first notch and a second notch are respectively formed on the same circumference of the two claws, and a first notch is formed on the upper end side of the tip of the first claw facing the first notch. Forming an inclined part that becomes lower as the pinion gets closer, the lowermost tip, which was previously held by the second pawl of the pinion, is
The upper tip of the lowermost tip is held by the first claw at the same time as it is released and transferred through the second notch, and when the other pinion returns, the upper tip is removed from the first tip. A tip separating and sending device characterized in that the tip is dropped from a first notch on the same circumference of the first claw along an inclined part of the claw and held by the second claw.