JPS6214978A - Part selector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a parts sorting device that can be used, for example, in automatic sorting of electronic parts.

BACKGROUND OF THE INVENTION A conventional electronic component sorting device is shown in FIGS. 4a and 4b, for example.
The schematic perspective view and sectional view shown are used. In this device, a light-receiving element mounting plate 1 is placed opposite a light-emitting element mounting plate 3 with a rotary slit disc 2 in between, and electronic components placed in an electronic component receiver 4 are stepped through an exit of a rotary chute 5. This is an automatic sorting device that directs the materials to a specified position by a motor 6 and stores them in a sorting box 7 prepared directly below.

Problems to be Solved by the Invention In conventional sorting devices, the rotation direction of the stepping motor 6 is unidirectional. The side had to turn almost once, and the movement was wasting time.

The present invention provides a sorting device that easily solves the problems of the conventional device described above.

Means for Solving the Problems The present invention can be summarized as follows: A path for the material to be sorted and a position detection signal plate are installed on a shaft body controlled by a servo mechanism, and a stop signal and a rotation signal are transmitted to the position detection signal plate. A parts sorting system comprising: a drive system which is provided with signal discrimination means for a direction signal and a rotational speed control signal, and which optically detects each of the signal discrimination means and directs the passage exit of the object to be sorted to a predetermined position. It is a device.

According to the present invention, the shaft body controlled by the servo mechanism can be freely rotated in the direction detected by the rotation direction signal determining means, and at the same time, the position detection signal plate that moves together with the shaft body can be rotated freely. It is equipped with a drive system that uses the stop signal and rotational speed control signal provided to direct the exit of the passage of the sorted items to a predetermined position, so parts can be sorted and stored efficiently in a short time. is possible.

Embodiments Next, the present invention will be explained in detail with reference to the embodiments of FIGS. 1 to 3.

FIG. 1a is a sectional view of a main part of an embodiment of the present invention, in which a light-receiving element mounting plate 11 and a light-emitting element mounting plate 12 are arranged to face each other with a position detection signal plate 13 interposed therebetween. The element mounting plate 11 and the light emitting element mounting plate 12 are fixed in a non-rotating state, the position detection signal plate 13 is attached to the shaft 14, and the rotary chute 15, which is a passage for the material to be sorted, is also attached to the shaft 14. Although this shaft body 14 is not shown,
A servo mechanism, for example, one coupled to the shaft of a stepping motor. Of these, the light receiving element mounting plate 119, the light emitting element mounting plate 12, and the position detection signal plate 13
The planar configurations of are shown in FIG. 1, FIG. 1C, and FIG. 1D, respectively. Similar to the conventional device shown in FIG. 4, this embodiment device has 1.11. Sorting boxes for receiving sorted objects, such as electronic components, according to their specifications are placed at each position indicated by III and IV, that is, at each position divided into four parts of the circumference, and used by As shown in Figure 1, on the element mounting plate 11, three photodiodes (PH1, PH1, PH1", PH2, PH
2, PH2, PH3, PH3, PH3, PH4, PH4
, PH4''), and on the light emitting element mounting plate 12, as shown in FIG. .

LEDl, LEDl'', LED2.LED2.LED2
″, LED3.LED3.LED3, LED4゜LED
4. Furthermore, as shown in FIG. 18 are formed on concentric circumferential portions corresponding to the optical path positions of each of the three light emitting/light receiving pairs arranged radially.

Figure 2 shows the coupling state of each photodiode (group) and each light emitting diode (group) in this device, that is, the circuit diagram for each signal generation in the drive system based on electrical circuit connections and optical connections. The numbers assigned to each photodiode and each light emitting diode correspond to those in FIG. In FIG. 2, a group of light emitting diodes generates an optical signal corresponding to an instruction signal (classification 1 to 4 instruction signal) indicating which of classification boxes 1 to 4 the object to be sorted is placed in, and a group of photodiodes generates an optical signal corresponding to an instruction signal (classification 1 to 4 instruction signal). The optical signal is transmitted to the position detection signal plate 13
The light is received according to each transmission hole, photoelectrically converted, and a stop signal is generated.
Each electrical signal of a rotation direction signal and a rotation speed control signal is formed.

FIG. 3 shows a drive system and its signal processing circuit, which are combined with the signals shown in FIG. 2 to operate the parts sorting device. The operation of the embodiment apparatus will be described below with reference to FIGS. 1 to 3.

Now, the outlet of the rotary chute 16 attached to the shaft body 14 is located at the position 11, that is, as shown in Figure 1.
When placed on the classification box 1, the position detection signal board 13
As shown in FIG. The drive system is stopped by the signal.Next, when it is desired to move the exit of the rotary chute 15 to position 2, that is, above the classification box 2, the light emitting diodes LED2.LED2. Turn on LED2''.

At this point, only the photodiode PH2 receives the optical signal through the rotational direction signal transmission hole 17 and generates the rotational direction signal from the second illustrated circuit. This signal operates the transistor Q1 in the third illustrated circuit, and the flip-flop FF1 memorizes the rotational direction of the stepping motor S-P with the leading edge pulse (A) of the classification start signal, and then stores the rotational direction of the stepping motor S-P with the leading edge pulse (A) of the classification start signal. The driving circuit rotates the stepping motor SP at a rotational speed corresponding to the output of the oscillator composed of transistors Q2 and Q3. If the rotation direction of the stepping motors S and P when the photodiode PH2 operates is defined as clockwise rotation, the rotary chute 1 will rotate along with this rotation.
5 also begins to move the circumferential portion in the direction of position ■. Eventually,
The rotational speed control signal transmission hole 18 on the position detection signal plate 13 approaches the angle of position ■, and the light emitting diode LED2''
When the photodiode P H2'' receives an optical signal, a rotation speed control signal is generated from the second illustrated circuit,
This signal is supplied to a circuit including transistors Q4-Q6 in FIG. 3, prompting the discharge of capacitor C1 in the circuit, thereby causing transistors Q2. By lowering the oscillation frequency of the oscillator consisting of Q3, the stepping motor S-P
Decrease the rotation speed. Then, the position detection signal plate 13
When the upper stop signal transmission hole 16 moves to the position of the light emitting diode LED2, a stop signal is generated from the second illustrated circuit, and the circuit of the transistor Q7 and the flip 7 in FIG.
The supply of the oscillator output to the stepping motor drive circuit is cut off through the 0 knob FF2, and the stepping motor S-
Stop the rotation of P.

As a result, the outlet of the rotary chute 15 also moves to position H, and in this state, through the rotary chute 15,
When the electronic component to be selected is supplied, the electronic component is received in the sorting box 2 immediately below.

The procedure for rotating the shaft body 14 from this state to the position ■1 position ■ is as described above through the rotation direction signal transmission hole 17.
However, since the position detection signal plate 130 is provided in a state that transmits the optical signal at each position within a rotation angle of 180 degrees, which is a half rotation angle, the sorting operation is performed in the same manner one after another. be able to.

On the other hand, let's consider the case of returning from position ■ to position I, conversely. In this case, the classification start signal of the classification 1 instruction signal causes the light emitting diodes LED1. LEDl,
Even if all of the LEDs 1" are operated, the position detection signal board 1
Since the rotational direction signal transmission hole 17 on 3 is closed,
The circuit of transistor Q1 in FIG. 3 remains unchanged, and flip-flop FF1 stores a signal in the opposite direction to that in the previous case due to the leading edge pulse (A) of the classification start signal, and then Due to the pulse of the edge (b),
The stepping motors S and P are rotated in the opposite direction, that is, to the left. The generation of the rotational speed control signal and stop signal at this time is the same as in the case of rightward rotation, regardless of the rotational direction.

In the above-described embodiment device, the case where four positions, I to ■, are selected is described in detail, but the present invention is fully applicable even when six or more positions are selected.0 Effects of the Invention According to the invention, the sorting of the objects to be sorted is carried out at a rotation angle of 1
A parts sorting device that can be oriented in either the left or right direction within 80 degrees, that is, within half a rotation, is realized. Therefore, by realizing this device, the ability to sort parts can be greatly improved, and it can greatly contribute to improving manufacturing efficiency in the parts manufacturing process.

[Brief explanation of the drawing]

Figures 1 a - d are sectional views and plan views of essential parts of an apparatus according to an embodiment of the present invention, Figure 2 is an optical system signal circuit diagram of an apparatus according to an embodiment of the present invention, and Figure 3 is a drive system of an apparatus according to an embodiment of the present invention. Circuit diagram, Figure 4a
, b are a perspective view and a side sectional view of a main part of a conventional device. 11... Light receiving element mounting plate, 12... Light emitting element mounting plate, 13... Position detection signal plate, 14.
...Shaft body, 16 ...Rotary chute, 16
... Stop signal transmission hole, 17 ... Rotation direction signal transmission hole, 18 ... Rotation speed control signal transmission hole, LE
D1 ~ L E D 4"... Light emitting diode,
PH1~PH4...Photodiode, Q-Q
...Transistor, FF1~FF2...
・Flip-flop, sp... Stamping motor. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
Figure 14! Side busy-+ LED41 Figure 4

Claims (3)

[Claims] (1) A path for the material to be sorted and a position detection signal plate are installed on the shaft body controlled by a servo mechanism, and signal discrimination means for a stop signal, a rotation direction signal, and a rotation speed control signal are provided on the position detection signal plate. A parts sorting device comprising a drive system for optically detecting each of the signal discrimination means and directing a passage exit of the object to be sorted to a predetermined position. (2) The parts sorting device according to claim 1, wherein the position detection signal plate is a rotating disk having a stop signal transmission hole, a rotational direction signal transmission hole, and a rotational speed control signal transmission hole. (3) The parts sorting device according to claim 2, wherein the rotational direction signal transmission hole is formed in a range of a half rotation angle of the position detection signal plate.