JPH06350292A - Automatic electronic parts inserter and insertion detector - Google Patents

Abstract

PURPOSE:To decrease the number of signal amplifying/insertion deciding circuits in the insertion detector for an electronic parts inserter. CONSTITUTION:A plurality of insertion detecting sections 1-6 for detecting the insertion of an electronic parts are connected with a signal amplifying/ insertion deciding circuit 22 through a signal switching circuit section 21. The signal switching circuit section 21 switches signals received from the plurality of insertion detecting sections so that the signal amplifying/insertion deciding circuit 22 can be shared thus decreasing the number of the signal amplifying/ insertion deciding circuits 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insertion detecting device for an electronic component automatic inserting machine for automatically inserting an electronic component into a printed circuit board.

[0002]

2. Description of the Related Art Recently, automatic electronic parts insertion machines have
Along with the diversification of parts such as ICs, SIP / ICs, connectors, etc., a single machine is equipped with a plurality of insertion head parts and insertion detection parts to accommodate various parts insertion.

Conventionally, the insertion detection of the electronic component automatic insertion machine is
As shown in FIGS. 2 and 3, a pair of detection elements 8 such as piezoelectric elements corresponding to the pair of clinch claws 7 is used for each of the insertion detection units 1 to 6, and signals from the pair of detection elements 8 are used. Is input to a pair of signal amplification / insertion determination circuits 9 corresponding to the detection elements, the input signal is amplified, and if it is above a certain level, it is determined that it has been inserted.

Inserted leads are generally detected at two locations. FIG. 2 shows the structure of the insertion detecting section when detecting insertion of two leads, and FIG. 3 shows the structure of each insertion section. It is a connection diagram when there are six.

[0005]

In such a conventional method, when a plurality of kinds of parts are to be inserted by one machine with the diversification of electronic parts, a plurality of insertion detecting parts corresponding to the parts are inserted. And a signal amplification / insertion detection judgment circuit is required. As a special case, DIP / IC, SIP /
In the case of a component having a large number of insertion leads such as an IC, to detect whether all of the insertion leads have been reliably inserted, one insertion detection unit 11 as shown in FIGS.
A large number of detecting elements 13 corresponding to a large number of clinch nails 12.
And a large number of signal amplification / insertion determination circuits 14 that form a pair with the detection element 13 are required. Especially, when the insertion of all leads is detected by a plurality of insertion detection units, the number of insertion determination circuits increases. However, there is a problem that the number of adjustments such as the amplification factor of the insertion determination circuit 14 and the determination level is increased.

The present invention solves the above problems, and an object of the present invention is to provide an insertion detection device for an electronic component automatic insertion machine, which can reduce the number of signal amplification / insertion determination circuits required in the past. To do.

[0007]

In order to solve the above-mentioned problems, the insertion detecting device of the present invention comprises an analog switch or a semiconductor element between the detection element of the insertion detecting section and the signal amplification / insertion judging circuit section. The signal switching circuit section is provided so that the signal amplification / insertion determination circuit section is commonly used.

[0008]

With the above configuration, the signal switching circuit section provided between the detection elements of the plurality of insertion detection sections and the signal amplification / insertion determination circuit section selects the detection elements of the plurality of insertion detection sections to amplify and insert the signals. By changing the connection with the determination circuit unit, the signal amplification / insertion determination circuit can be shared by the detection elements of the plurality of insertion detection units, and the number of signal amplification / insertion determination circuits can be reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An insertion detecting device for an electronic component automatic inserting machine according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a connection diagram of an insertion detecting device according to an embodiment of the present invention, and an example in which six insertion detecting parts as shown in FIGS. 2 and 3 are mounted in accordance with insertion electronic parts will be described. . In FIG. 1, the insertion detection units 1 to 6 use a pair of detection elements 8 such as piezoelectric elements corresponding to a pair of clinch claws, respectively, as in FIGS. 2 and 3.
The signals from the pair of detection elements 8 are input to the signal switching circuit section 21 configured by semiconductor elements such as analog switches or MOS relays. Only a pair of signal amplification / insertion determination circuits 22 to which the signals from the pair of detection elements 8 of the insertion detection units 1 to 6 are input are connected to the output side of the signal switching circuit unit 21. The signals from the pair of detection elements 8 of the detection units 1 to 6 are switched by the signal switching circuit unit 21 and input. Switching control unit 2
3 receives the selection signal from the controller of the electronic component automatic insertion machine, controls the switching of the signal switching circuit unit 21,
The signals of the pair of detection elements 8 of the insertion detection units 1 to 6 are sequentially switched and connected to the pair of signal amplification / insertion determination circuits 22.

The insertion detectors 1 to 6 are, for example, DI.
It is configured with a dedicated insertion detection unit that matches the number of P / IC insertion lead pins and the specifications of parts such as connectors and trimmers.
In this embodiment, the insertion detectors 1 to 4 detect the insertion of the IC lead pins of 4, 8, 16 and 40 pins of the DIP IC, and the insertion detectors 5, 6 insert the connector and the trimmer. It is detecting.

The operation of the insertion detecting device constructed as above will be described below. The NC component stored in the controller of the electronic component automatic insertion machine selects the insertion component and the insertion detection unit. In response to a selection signal from the controller, the switching control unit 23 operates the signal switching circuit unit 21 so that it can be connected to the detection elements 8 of the corresponding insertion detection units 1 to 6. When the components are inserted, the output signal of the detection element 8 is amplified by the signal switching circuit section 21.
When it is sent to the insertion determination circuit 22 and the output signal of the detection element 8 is equal to or higher than a predetermined level, it is output to the controller as if the electronic component was properly inserted. At this time, if the insertion lead is thin and the output signal of the detection element 8 is small even if it is properly inserted, the amplification factor of the signal amplification / insertion determination circuit 22 is switched according to the instruction of the NC program of the controller. The increase is done by 23.

Further, as shown in FIGS. 4 and 5, even when the insertion detection of all the leads is performed by each insertion detection unit, by providing the signal switching circuit unit of this embodiment, the signal amplification / insertion determination is performed. The number of circuits can be reduced.

[0014]

As described above, according to the present invention, by providing a simple signal switching circuit section, the number of signal amplification / insertion determination circuits can be reduced, and the amplification factor can be set in the electronic component automatic insertion machine. Since this can be done by the NC program of the controller, it is possible to provide a compact, highly reliable, and economical insertion detecting device that does not require adjustment.

[Brief description of drawings]

FIG. 1 is a block diagram of an insertion detection device of an electronic component automatic insertion machine according to an embodiment of the present invention.

FIG. 2 is a structural diagram of an insertion detection unit in the case where one insertion detection unit of the insertion detection device has a pair of detection elements to detect insertion of two leads.

FIG. 3 is a connection diagram of an insertion detection device when there are a plurality of insertion detection units each having a pair of detection elements.

FIG. 4 is a structural diagram of an insertion detection unit when the insertion detection of all leads is performed by one insertion detection unit of the insertion detection device.

FIG. 5 is a connection diagram of an insertion detection device when the insertion detection of all the leads is performed by one insertion detection unit.

[Explanation of symbols]

 1 to 6 insertion detection unit 7 clinch claw 8 detection element 21 signal switching circuit unit 22 signal amplification / insertion determination circuit 23 switching control unit

Claims (1)

[Claims] 1. An electronic component automatic insertion machine for automatically inserting electronic components into a printed circuit board, wherein a plurality of insertion detection units for detecting component insertion and a signal switching circuit unit for switching signals from the plurality of insertion detection units. And the signal amplification / insertion determination circuit section, and by switching the signals from a plurality of insertion detection sections, the signal amplification / insertion determination circuit section can be shared, and the insertion detection of the electronic component automatic insertion machine is characterized. apparatus.