JPS59158600A - Automatic inserting machine for electronic part - 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 Application of the Invention] The present invention relates to an automatic electronic component insertion machine (hereinafter referred to as "automatic electronic component insertion machine") suitable for preventing the insertion of defective electronic components into printed circuit boards. , simply referred to as "automatic insertion machine").

[Prior art]

A magnetic capacitor with leads in the same direction.

Electronic components such as electrolytic converters/capacitors and metal film resistors (hereinafter referred to as “
Conventional automatic insertion machines for radial parts (referred to as “radial parts”)
The above radial parts are fixed onto a tape having feed holes at a predetermined pitch, and the series of parts are stored in a plurality of storage rows, selected by a storage row selection signal commanded by a control section to be described later, and sent to a transport mechanism. The tape and the radial component lead wire are cut to a predetermined length along the conveyance path, and then the radial component lead wire is The wires are configured to be continuously and automatically inserted into predetermined insertion holes of the printed circuit board. In other words, the conventional automatic radial component insertion machine replaces the manual insertion of radial components into printed circuit boards with mechanical operation controlled by a so-called numerically controlled controller. Automatic insertion machines do not have the ability to measure and detect characteristics, such as resistance value for resistors or capacitance for capacitors, so defects in the electrical characteristics of radial components will not be detected by automatic insertion machines. It is first discovered by logical testing of the printed circuit board and fault location search after it is inserted into the printed circuit board and predetermined connection work such as soldering is completed. For this reason, it takes a lot of time and effort to discover electrically defective radial parts.
Another drawback is that it is difficult to discover unless someone has the ability to analyze the logic of printed circuit boards.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and its purpose is to eliminate the above-mentioned drawbacks of conventional automatic insertion machines and to change the data format for numerical control of conventional automatic insertion machines. It is an object of the present invention to provide an automatic insertion machine that can measure and judge the electrical characteristics of radial parts and detect and eliminate defective products without any problems.

[Summary of the invention]

The key point of the present invention is that a numerically controlled automatic insertion machine is provided with a terminal for measuring electrical characteristics on the conveyance path of the radial component, and is operated intermittently in conjunction with the operation of the conveyance system, and the radial component is In addition to clamping the lead wires to obtain the measurement voltage, a processing device for measuring and determining electrical characteristics is provided, which is logically interconnected with a control section for conventional numerical control.
All information processing related to electrical characteristics is performed by this processing device, and the data format for numerical control is not changed at all. The automatic insertion machine is equipped with the function of measuring and determining the electrical characteristics of radial parts, and retains such data as a file.

[Embodiments of the invention]

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1(A) is a plan view of a taped electronic component series of radial components to be automatically inserted, and FIG. 1(B) is a side view of the same. In the figure, l is the radial part body,
2 is the lead wire, 3 is the parts connection, and the meeting is the taping tape.
Further, 5 indicates feed holes provided at a predetermined pitch.

FIG. 2 shows an example of a data format for numerical control of a control unit of an automatic insertion machine that has been used in the past. The minimum numerical control data necessary for automatically inserting the component series 3 to which the lead wires 2 of the radial component 1 shown in FIG. 1 are manually attached with tape onto the printed circuit board is as shown in FIG. Insertion order N, insertion hole position X on the printed circuit board,
There are four types: Y, component storage row number P, and these are registered for each printed circuit board to cause the automatic insertion machine to perform a predetermined operation. Note that if the automatic insertion machine has a mechanism that can select the direction of the component and insert it, information on the insertion direction M is added.

FIG. 3 is a configuration diagram showing an outline of a five-item transport system of an automatic insertion machine according to an embodiment of the present invention. The component transport system of the apparatus of this embodiment includes a component storage row 15 that stores electronic components, a pitch feed section 16 that separates the component series 3 into individual components and sends them out one component at a time to an alignment transportation section 28, which will be described later. The alignment conveyance section 28 arranges the component series 3 separated into parts one by one in the pitch feed section 16 in the order of insertion and carries them out to the transfer section 17, and the alignment conveyance section 28 transports the component series δ transferred from the alignment conveyance section 28. It is comprised of a transfer section 17 for carrying out the components to the insertion section 18 described below, and an insertion section 18 for inserting components into the printed circuit board.

The pitch feeding section 16 is arranged for each component storage row 15, and its detailed structure is shown in FIG. 4. In the figure, 7 is an air cylinder, 8 is a solenoid valve connected to a compressed air source (not shown), and 9 is a chain having a claw that can be engaged with the convex feed hole of the parts chain 3.
1o is a cutter driven by a renoid. The operation of the pitch sending section 16 configured as described above will be explained below.

By activating the electromagnetic valve 8 in response to a command from a control unit (not shown), the air cylinder 7 reciprocates, weighs down the one-way gear mechanism, moves the chain 9, and attaches the chain 9 to the pawl. The series of parts fitted through the feed hole 5 is sent out by one part in the direction indicated by the arrow.

The sent-out part series 301 parts are held by a transport piece 29, which will be described later, of the alignment transport section 28.

FIG. 5 shows details of the conveyance pieces 29 of the alignment conveyance section 28.

It is shown in Figure 6. FIG. 5 is a perspective view of the conveyance piece 29 viewed from the pitch feed section 16 side, and FIG. 6 is a sectional view taken along the line A--A in FIG. 5. In the figure, 12 is a pedestal, 13 is a presser,
A spring 14 biases the presser 13 toward the base 12. The one-part series 3 sent out from the pitch feed section 16 is held between the presser 13 and the pedestal 12 of the transporting frame 29 configured as described above, and at the same time is cut from the rest by the cutter 10. They are separated and sequentially conveyed in the direction of arrow B in FIG.

A terminal 19 for measuring electrical characteristics, which is a mechanical feature of the apparatus of this embodiment, is provided below in the transport direction indicated by the arrow B. The electrical characteristic measuring terminal 19 is located at the lowest stage of the pitch feeding section 16 and is positioned so as to be able to hold the lead wire 2 of the electronic component series 3 that is intermittently fed by the conveyor block 29. FIG. 7 shows a front view of the electrical characteristic measuring terminal (hereinafter referred to as "Measurement terminal") 19, FIG. 8 shows a perspective view of its electrode part, and FIG.
Figures (A) to (C) show schematic diagrams of the operation of the measurement terminal 19. The measurement terminal 19 is operated by the main shaft of the automatic insertion machine via a cam mechanism, and its main body 1
9a and the transmission rod 20 are configured to be able to reciprocate horizontally in parallel with respect to the conveyance piece 29. Also, due to the relative movement between the measuring terminal 190 main body 19, a and the transmission rod 20, the electrode section 24 having the two measuring elements 25 is connected via the links 21 and 22, and the measuring element 25 is connected to the measuring element 25 via the swing ring 27. The support portions 24a that support the two support rods 26 corresponding to the two move toward and away from each other, and the two pairs of probes 25 and support rods 26 move so as to come into contact with and separate from each other. 23 is a guide shaft when the electrode part 2421 and the support part 24 perform the above-mentioned reciprocating motion, both of which are made of an insulating material, and 30a and 30b are connection cables.

Hereinafter, the operation of the measurement terminal 19 will be explained based on FIGS. 9(5) to (q).

At the start of one cycle, the conveyance piece 29 descends by one pitch, and the radial component 1 delivered from the pitch feed section 16 in the previous stage descends to the position shown by la in FIG. 9(A) (arrow E) and stops. (See Figure 9 (5)). Next, the measurement terminal 19 moves to the radial component 10 position 1a (arrow F), and the measurement terminal body 19a remains as it is, and the transmission rod 20
only moves in the direction of the actual mark G. As a result, the above-mentioned operation occurs, and the probe 2.5 and the support rod 26 grip the two lead wires 2 of the radial component 1 (Figure 9 CB).
reference).

In this state, a measurement current is applied to the radial component 1 from a measuring section, which will be described later, via the connection cables 30a and 30b, and the electrical characteristics are measured. Next, after the transmission rod 20 moves in the opposite direction to the above and releases the lead wire 2, the entire measurement terminal 19 moves in the direction of arrow H, the transport piece 29 descends one pitch, and the measured radial Part 1 is moved to the position indicated by 1b.

The mechanical configuration and operation of the apparatus of this embodiment have been described above, and next, the method for measuring and determining the electrical characteristics of electronic components will be described.

Figure 10 is a block diagram of the part that measures and judges the electrical characteristics of electronic components in the automatic insertion machine of this embodiment;
The figure shows a specific example of the resistance value measuring circuit of the measuring circuit section, which is the main part, and FIG. 12 is a sequence diagram of information transmission between the part that performs the above measurement and judgment and the automatic insertion machine. . In FIG. 10, 31 is a control device for an automatic insertion machine;
2 is the interface on the control device side, 34 is the CPU 35
゜A measurement/establishment processing unit consisting of a storage unit 35a, interfaces 33 and 42, and 37 a resistance value measurement circuit unit (l() 36a) and an electrostatic sound measurement circuit unit (C
) 36b, diode polarity measuring circuit section (D) 36C, etc., measurement mode selection section 44. The measurement device is composed of a measurement control section 45°, an operation panel 461, a display section 47, and an interface 43, and 38 is a measurement terminal section that receives the outputs of the two probes 2.5 on the measurement terminal 19. In the storage unit 35a of the measurement/judgment processing device 34, a component rating table 40. A comparison reference value table 41 in which comparison reference values for component quality determination determined based on the component rating values are stored, and a stacker 39 for storing comparison and determination results of measurement results are provided.

The operation will be explained below.

Data regarding the insertion order N of electronic components and the storage row number PK of the electronic components to be inserted in the insertion order N is provided to the automatic insertion machine control unit 31 in advance in the format shown in FIG. 2. τ is stored as information for each printed circuit board. Based on this data, the electronic components in (insertion order N1 component storage row number P) are placed in (P) from the start of automatic insertion machine operation.
+N-1) The pitch feed section 16 carries out the transport piece 29 of the alignment transport section 28 in the +N-1 cycle. Therefore, the number of cycles until the first electronic component in the insertion order reaches the measurement terminal 19 arranged next to the maximum value P = n in the component storage row 15 from the start of the automatic insertion machine operation. is constant at (n+1). After this, electronic components from the second insertion order to the final insertion order are sequentially conveyed to the measurement terminal 19. As shown in FIG. 12, the automatic insertion machine side control unit 31 counts 1 cycles using a mechanical 7-y'rs1 provided in the automatic insertion machine, and after the start of the (n+1)th cycle, the automatic insertion machine side control unit 31 counts l cycles. After a period of time has elapsed, the component storage row number P, which is the first in the insertion order, is transmitted to the measurement/determination section interface 33 via the control device interface 32 (1). The measurement/judgment processing device 34 confirms the reception of the parts storage row number P, and sends a message confirming the reception to the automatic machine side control unit 31 via the interface in the reverse procedure to the above (2). At the same time, it compares the component rating table 40 stored in the storage section 3 and the component row number P, selects and determines measurement conditions such as measurement mode and measurement range, and gives a command to the measuring instrument 37 to set the measurement conditions (3 ). Further, after a certain period of time has elapsed, when the measurement terminal 19 starts to clamp the lead wire 2 of the electronic component by the aforementioned cam mechanism, the automatic insertion machine side control unit 31 receives a signal from the mechanical sensor TS2 that detects this starting operation. Then, it is transmitted to the measurement/judgment unit side ink face 33 via the control device side interface 32 (4). Upon receiving this signal, the measurement/judgment processing device 34 instructs the measuring device 37 to start measurement (5), and transmits the measurement results to the measuring device via the measuring device side interface 43 and the measurement/judgment processing device side ink face 42. 37 (6). The measurement/publishing unit side processing device 34 stores the measurement results in the corresponding electronic component's on the comparison reference value table 41 stored in the storage unit 35,1.
By comparing electrical characteristic values and determining the quality of electronic components,
Store the result in the stacker 39 on the storage unit 35a (7)
. The address number of the stacker 39 is determined from the measurement terminal 19 to the transfer section 1.
7 and the electronic component is inserted into the printed circuit board at the insertion section 18. After one cycle, the measurement results are transferred to addresses in order from O → 1 → m, and the measurement results are The electronic component measured at terminal 19 is inserted into insertion section 1.
8, it is taken out from the last address of the stacker 39 in the cycle where it is inserted into the printed circuit board, and is transferred to the control device side interface 32 via the measurement/judgment section side pentaface 33.
sent to. Upon receiving this signal, the automatic insertion machine side control device 31 instructs to execute the next cycle operation if the electronic component measurement result is a good product, and to stop the machine operation after the completion of this cycle if the electronic component is a defective product.

The above measurements and judgments are repeated until the insertion of each printed circuit board is completed, and when the measurement/establishment processing unit 34 receives an insertion completion signal for each printed circuit board from the automatic insertion machine side control device 31, the electronic Insertion of parts and V
C! Complete the temporal characteristics determination and judgment.

According to this embodiment, the following effects can be obtained.

(1) Since the electrical characteristics of electronic components are measured and determined in synchronization with the cycle of insertion operation within the transport path of the automatic insertion machine, defective products can be detected and eliminated at the stage of inserting electronic components into printed circuit boards.

(2) Processing equipment for measuring and determining electrical characteristics of electronic components:
Each time the automatic insertion machine performs one cycle of operation, the automatic insertion machine side control device obtains the component storage row number and synchronization signal information for measurement and judgment, so the numerical control data created and registered for each printed circuit board is There is no need to change the format, and even on the electrical custom-made measurement/judgment processing equipment side,
There is no need to create and store numerical control data such as the order of component insertion for each printed circuit board.

(3) 'The required memory information for measuring and determining the fusion characteristics is only the correspondence between the component storage row number and the electronic component name, and information on the electrical characteristic value for each electronic component name, so the automatic insertion machine side It is also possible to easily respond to changes in the arrangement of electronic components in the component storage rows.

(4) Since the electrical characteristics of electronic components can be measured and judged at high speed, measurements and judgments can be made without extending the insertion cycle time of the automatic insertion machine.

In addition, in the example of FIG. 12, 1 cycle -600 m5e
As shown in the automatic insertion machine shown in c, the time required to measure and judge the electrical characteristics of electronic components is 100 to 150 m.
Approximately 5 ec is sufficient, and the present invention is also applicable to even higher-speed automatic insertion machines.

The clamping/releasing mechanism for the lead wire 2 in the measurement terminal 19 for measuring electronic components includes, in addition to the mechanism shown in the above embodiment,
Various configurations are possible. Further, it goes without saying that the component rating table 4o and the comparison reference value table 41 provided in the storage section 35a in the processing device 34 of the electrical characteristic measurement/judgment section can be combined into one table.

Furthermore, the automatic insertion machine of the present invention can be applied to Chisog components by changing the mechanism of the measurement terminal.

Needless to say, the present invention can also be extended to electronic components such as ICs and coaxial components.

〔Effect of the invention〕

As described above, according to the present invention, in a numerically controlled automatic insertion machine for inserting electronic components into printed circuit boards, etc.,
A terminal for measuring electrical characteristics is provided on the transport path of the electronic component, and is operated intermittently in conjunction with the operation of the transport system to clamp the lead wire of the electronic component to obtain a measurement voltage. Since we have provided a processing device for measuring and determining electrical characteristics that is logically interconnected with the control unit for numerical control of the automatic insertion machine, it is possible to perform electronic This has the remarkable practical effect of realizing an automatic insertion machine that can measure and judge the electrical characteristics of parts and detect and eliminate defective products.

[Brief explanation of the drawing]

Figure 1 (N is a plan view of a series of parts, Figure 1 (B) is a side view of the same, Figure 2 is a diagram showing an example of a data format for numerical control, Figure 3 is an example of the present invention) Fig. 4 is a block diagram showing the outline of the parts conveyance system of the automatic insertion machine, Fig. 4 is a block diagram showing details of the pitch feed section, Fig. 5 is a perspective view of the transfer core, and Fig. 6 is the direction A-A in Fig. 5. The figure is a block diagram of the electrical characteristic measurement/judgment section of the apparatus of this embodiment, FIG. 11 is a diagram showing a specific example of the measuring circuit section which is the main part thereof, and FIG. 12 explains the operation of the apparatus of this embodiment. It is a sequence diagram. 1: Nirasial component body, 2: Lead wire, 3 = Part series, 4
:Data, 5: Sprocket hole, 6: Data format, 15
Two parts storage rows, 16: Pinch feeding section, 17: Transfer section, 1
8: Insertion part, 19: Measurement terminal, 20: Transmission rod, 21,2
2: Link, 24: Electrode part, 24a: Support part, 25:
Measuring head, 26: Support rod, 29: Transport piece, 31: Automatic insertion machine control device, 32.33.42.43: Interface, 34: Measurement/judgment processing device, 35: CP
U, 35a: Storage section, 36a, 36b, 36c
F measurement circuit section, 37=measuring device, 39 Nistadka, 40=
Parts scaffolding table, 41. : Comparison standard value table, 44
=Measurement mode selection section, 45: Measurement control section. Figure 1 G (13) Figure 2 Figure 3 Figure 5 Figure 4 Figure 5 Figure 6 Figure 4 Figure 7 Figure 8 Figure 9 Figure 1b+AO11

Claims (2)

[Claims] (1) In an automatic electronic component insertion machine using a numerical control method for inserting electronic components into a printed circuit board, etc., a terminal section for measuring electrical characteristics is provided on the transport path of the electronic component, and a control section and a logic section for the numerical control are provided. A processing device for measuring and determining electrical characteristics is provided and is configured to measure and determine the electrical characteristics of the electronic component using the data stored in the control unit for numerical control. An automatic insertion machine for electronic parts. (2) The terminal section for measuring electrical characteristics is configured to be able to clamp and release the lead source of the electronic component in conjunction with the feeding operation of the electronic component, and the processing device for measuring and determining the electrical characteristics includes a measuring circuit section that can be selected according to the type of electronic component, a comparison/judgment section that compares the electrical characteristic measurement reference value of the electronic component obtained by the measuring circuit section, and an electronic component provided to the comparison/judgment section. A storage unit that stores reference values of the electrical characteristics and the determination results by the comparison and determination unit, and a control unit that controls these and is capable of transmitting and receiving information to and from the control unit of the automatic insertion machine. An automatic electronic component insertion machine according to claim 1, characterized in that: