JP2000249538A - Device for detecting deformed external terminal of electronic parts - Google Patents

Abstract

PROBLEM TO BE SOLVED: To continuously detect the bent external terminals of electronic parts each having a plurality of external terminals. SOLUTION: While electronic parts having a resin-sealed body 2 incorporating an electronic circuit and a plurality of external terminals 3 led out in parallel with each other from the body 2 and a sensor device 7 are moved relatively to each other by means of a transporting device 15, the led-out sections 3a of the terminals 3 are detected by means of a leading-out side sensor 5 and, at the same time, the front end sections 3b of the terminals 3 are detected by means of a front end-side sensor 6. A detection control circuit 8 receives detecting signals from the sensors 5 and 6 and detects the time lag between the detecting signals of the sensors 5 and 6 when some of the terminals 3 are bent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device and a method for detecting a modified external terminal of an electronic component capable of selecting an electronic component having a bent external terminal.

[0002]

2. Description of the Related Art Electronic components having a resin-sealed body and a plurality of external terminals derived from the resin-sealed body in parallel with each other are used in various forms such as diodes, transistors, and hybrid ICs. When inserting an external terminal into a through-hole of a circuit board using an automatic mounting machine or the like, if the external terminal is bent, it cannot be easily inserted into the through-hole. Need to ship the product. Conventionally, the bending of the external terminal has been detected by visual inspection or an image recognition device.

[0003]

When the bending of the external terminals is visually inspected by stopping the electronic components one by one, the fatigue of the worker is increased, the inspection efficiency is remarkably reduced, and the productivity cannot be improved. However, there is a disadvantage that production costs increase due to labor costs. In addition, when an expensive image recognition device is used, each time image recognition is performed, the electronic component must be accurately positioned and fixed at a predetermined position, so that the productivity is not always high, and the manufacturing cost increases. There is.

Accordingly, an object of the present invention is to provide a modified external terminal detection device and a detection method capable of identifying an electronic component having a bent external terminal. In addition, the present invention, while moving the electronic components relative to the sensor device,
An object of the present invention is to provide a device and a method for detecting a deformed external terminal of an electronic component that can continuously and automatically detect the presence or absence of bending of a plurality of external terminals.

[0005]

According to the present invention, there is provided a device for detecting a deformed external terminal of an electronic component, which is derived in parallel from a resin sealing body (2) having a built-in electronic circuit and a resin sealing body (2). An electronic component (1) having a plurality of external terminals (3), and an electronic component
Sensor device that detects the passage of multiple external terminals (3) in (1)
(7) and the electronic component perpendicular to the lead-out direction of the external terminal (3)
(1) A transport device (15) for moving the sensor device (7), and a detection control circuit (8) electrically connected to the sensor device (7). The sensor device (7) includes a lead-side sensor (5) that detects the passage of the external terminal (3) led out from the resin sealing body (2) on the lead-out side (3a) to generate a detection signal, and a resin sealing. A tip sensor (6) for detecting the passage of the external terminal (3) derived from the stationary body (2) on the tip side (3b) and generating a detection signal. When the electronic component (1) or the sensor device (7) is moved, the detection control circuit (8) receives two detection signals from the output side sensor (5) and the tip side sensor (6), and A selection signal is generated when there is a time lag in the detection signal.

The sensor device (7) is moved at a right angle relative to the direction in which the external terminal (3) of the electronic component (1) is drawn out, and the lead-out portion (3) of the external terminal (3) is moved by the lead-out side sensor (5). 3a) is detected, and at the same time, the tip (3) of the external terminal (3) is detected by the tip sensor (6).
b) is detected. At this time, if the external terminal (3) is linear and not bent in the plane of the plurality of external terminals (3), the detection signals output from the output side sensor (5) and the distal end side sensor (6) are: Occurs at substantially the same time without a time lag. On the other hand, if the external terminal (3) is bent, a time lag is detected in the detection signals output from the output side sensor (5) and the distal end sensor (6), and the detection control circuit (8) outputs the selection signal. appear. Thus, the detection signal of the lead-out sensor (5) that detects the lead-out portion (3a) of the external terminal (3) and the tip of the external terminal (3)
The detection control circuit (8) detects a time lag between the detection signal of the front-end sensor (6) for detecting (3b) and the relative movement speed between the electronic component (1) and the sensor device (7). Even if it fluctuates, it is possible to accurately detect the displacement between the leading portion (3a) and the leading portion (3b) of the external terminal (3), that is, the bent external terminal (3). Also, since the sensor device (7) is relatively moved at right angles to the direction in which the plurality of external terminals (3) are led out, the plurality of external terminals led out of the resin sealing body (2) of the electronic component (1) are moved. The presence or absence of deformation of the terminal (3) can be detected continuously and simultaneously.

In the embodiment of the present invention, the transfer device (15)
Is a transport rail (14) for guiding the movement of the electronic component (1),
A holder (4) for holding the electronic component (1) on the transport rail (14). Each of the external terminals (3) is arranged at right angles to the length direction of the transport rail (14), and a straight line connecting the output side sensor (5) and the distal end side sensor (6) is parallel to the external terminal (3). The sensor device (7) is disposed adjacent to the transport rail (14). The electronic component (1) is moved linearly along the transport rail (14) by a drive signal from the detection control circuit (8).

[0008] The detection control circuit (8) includes a storage means for storing a predetermined time interval, and an electronic component when the time lag of the two detection signals exceeds the predetermined time interval stored in the storage means.
Comparing means for generating a selection signal for (1).

The sensor device (7) is a light transmission type photocoupler
(7a) or a light reflection type photocoupler (7b).
In the light-transmitting photocoupler (7a), the output-side sensor (5) includes a light-emitting element (5a) and a light-receiving element (5b) that are arranged to face each other so that the optical axes coincide with each other. ) Are the light-emitting element (6a) and the light-receiving element, which are arranged facing each other so that the optical axes coincide.
(6b), and the external terminal (3) of the electronic component (1) passes between the light emitting elements (5a) (6a) and the light receiving elements (5b) (6b). In the light reflection type photocoupler (7b), the output side sensor (5) includes a light emitting element (5a) and a light receiving element (5b) arranged in parallel with each other, and the tip side sensor (6) is arranged in parallel with each other. Light emitting element (6a)
And a light receiving element (6b), and irradiates light from the light emitting elements (5a) (6a) and passes the reflected light of the external terminal (3) through the light receiving elements (5b) (6
b) receives light.

According to the method for detecting a deformed external terminal of an electronic component according to the present invention, a sensor is provided at right angles to a direction in which a plurality of external terminals (3) derived from a resin sealing body (2) constituting the electronic component (1) are derived. A step of relatively moving the device (7), a detection signal of the output side sensor (5) of the sensor device (7) for detecting passage of the external terminal (3) on the output side (3a), and an external terminal (3 ) A step of extracting the detection signal of the distal sensor (6) of the sensor device (7) for detecting the passage of the distal side (3b) of the distal side (3b);
Detecting the presence or absence of a time lag between the two detection signals by the detection control circuit (8); and, when the detection control circuit (8) detects the time lag, generating a selection signal for the electronic component (1). including.

In the embodiment of the present invention, the transport rail (14)
Moving the electronic component (1) in a straight line by the transfer device (15) or generating a selection signal from the detection control circuit (8) when the detected time lag exceeds a predetermined time interval. May be.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a device and a method for detecting a deformed external terminal of an electronic component according to the present invention will be described with reference to FIGS.

As shown in FIG. 1, a device for detecting a deformed external terminal of an electronic component according to the present embodiment comprises a resin sealing body (2) and a plurality of external terminals led out parallel to each other from the resin sealing body (2). A holder (4) for holding an electronic component (1) having a terminal (3),
A sensor device (7) arranged adjacent to the transfer rail (14). Although not shown, an electronic circuit or a circuit board is built in the resin sealing body (2), and the electronic circuit or the circuit board is electrically connected to the external terminal (3). Sensor device
(7) is a lead-out sensor (5) that detects the passage of the external terminal (3) led out from the resin sealing body (2) on the lead-out side (3a), and is led out from the resin sealing body (2). And a tip sensor (6) for detecting passage of the external terminal (3) on the tip side (3b). Transfer device (15)
A pair of holders (4) connected to the carrier rail (14) sandwich the resin sealing body (2) of the electronic component (1) movably disposed on the transport rail (14), and the external terminals (3) are transport rails. It protrudes outside of (14). The output side sensor (5) is arranged on the side of the external terminal (3), and the distal end side sensor (6) is arranged away from the transport rail (14). Each external terminal (3) is arranged at a right angle to the length direction of the transport rail (14), and the output side sensor (5) and the tip side sensor (6)
Sensor device (7) on the opposite side of the transport device (15) so that the straight line connecting to the external terminals (3) is parallel to
It is arranged on the side of (14). The distance between the pair of holders (4) is
The length is slightly larger than the length of the resin sealing body (2) in the direction perpendicular to the lead-out direction of the external terminals (3).

FIG. 3 shows a specific example of the sensor device (7). FIG. 3A shows a light transmission type photocoupler (7a).
(B) shows a light reflection type photocoupler (7b). FIG. 3 (a)
The output side sensor (5) of the light transmission type photocoupler (7a) includes a light emitting element (5a) and a light receiving element (5b) which are arranged to face each other so that their optical axes coincide with each other. ) Are a light-emitting element (6a) and a light-receiving element (6
b), and the external terminal (3) of the electronic component (1) passes between the light emitting elements (5a) (6a) and the light receiving elements (5b) (6b). The light transmitting photocoupler (7a), in which the external terminal (3) passes between the light emitting elements (5a) (6a) and the light receiving elements (5b) (6b), can take a large detection signal. ) High positional accuracy is not required. The output side sensor (5) of the light reflection type photocoupler (7b) in FIG. 3 (b) includes a light emitting element (5a) and a light receiving element (5b) arranged in parallel with each other, and the tip side sensor (6) is A light-emitting element (6a) and a light-receiving element (6b) arranged in parallel to each other are provided, and the light-receiving element (5b) irradiates light from the light-emitting elements (5a) and (6a) and reflects reflected light from an external terminal (3). ) (6b) receives light. The light reflection type photocoupler (7b) using the reflected light from the external terminal (3) is suitable for downsizing the sensor device (7).

As shown in FIG. 2, the light emitting element (5a) and the light receiving element (5b) of the output side sensor (5) and the light emitting element (6a) and the light receiving element (6b) of the distal end sensor (6) are controlled by the detection control. The transport device (15) and the alarm (13) are connected to the circuit (8), and are driven by the output of the detection control circuit (8). The transfer device (15) is a detection control circuit
A motor or actuator (not shown) electrically connected to (8) and moving the pair of holders (4) along the transport rail (14) is provided.

When detecting the deformed external terminal (3), a drive signal is applied from the detection control circuit (8) to the transport device (15),
As shown in FIG. 1, the transfer device (15) is driven to move the transfer rail (1).
The electronic component (1) is moved along 4). At this time, power is supplied from the detection control circuit (8) to the sensor device (7), and the output side sensor (5) and the distal end side sensor (6) are turned on. Electronic components
When (1) is moved, the plurality of external terminals (3) sequentially pass through the output side sensor (5) and the tip side sensor (6) simultaneously, and the output side sensor (5) leads out of the external terminal (3). At the same time as detecting the portion (3a), the front-end sensor (6) detects the front end (3b) of the external terminal (3) and sends a detection signal to the detection control circuit (8). At this time, in the plane of the plurality of external terminals (3),
When (3) is not bent, the detection signal output from the outlet-side sensor (5) and the front end side sensor (6), as shown in FIG. 4 (a), substantially without a time lag at time t ₁ at the same time it turned on, because a substantially simultaneously turned off at time t _2, substantially detected signal at the same time is generated. Resin sealing body (2)
When continuously detecting a plurality of external terminals (3) derived from the above, as shown in FIG.
This is repeated for the number of (3). When a detection signal without a time lag is received from the lead-out sensor (5) and the tip-end sensor (6), the detection control circuit (8) sends a drive signal to the transport device (15).

When the external terminal (3) is bent, FIG.
As shown in (b), the detection signal of the output side sensor (5) is turned on at time t ₁ and turned off at time t ₂ , whereas the detection signal of the distal sensor (6) is turned on at time t ₁ and at time t _1. offset from t _2, at time t ₃ and t ₄ on, off, time lag t ₀
Occurs. For example, if the distal end (3b) of the external terminal (3) is bent in the opposite direction to the transport direction, the detection signal of the distal end sensor (6) turns on and off with a delay. When it is measured that the time lag t ₀ exceeds a predetermined time interval, the detection control circuit (8) sends an activation signal to the alarm (13) as a selection signal,
A stop signal is sent to the transport device (15).

Even if the external terminal (3) is actually formed in a straight line without bending, the detection signals of the output side sensor (5) and the distal end side sensor (6) are strict due to difficulty in adjusting the mounting accuracy or timing. Does not occur at the same point in time, and a slight time lag occurs. Therefore, a time allowable range of the time lag is set in advance in the storage means of the detection control circuit (8). The comparing means for judging whether the detected time lag is longer than a predetermined time interval stored in the storage means is provided by a detection control circuit.
Provided in (8). When the detected time lag exceeds a predetermined interval, the comparison means of the detection control circuit (8) sends a stop signal to the transport device (15) as a selection signal and sends an operation signal to the alarm (13), so that the Electronic component (1) with bent terminal (3)
Can be easily sorted. In this case, the electronic components
Even if the moving speed of (1) fluctuates, the time lag of the detection signals of the leading-side sensor (5) and the tip-side sensor (6) according to the moving speed can be instantaneously and accurately detected.

Further, since the external terminal (3) is relatively moved with respect to the pair of output side sensor (5) and the tip side sensor (6),
Not only when detecting the bending of one external terminal (3),
As shown in FIG. 4, the bent state of the plurality of external terminals (3) derived from the resin sealing body (2) of the electronic component (1) can be simultaneously detected. If the external terminal (3) is bent in a direction perpendicular to the plane of the plurality of external terminals (3), the external terminal (3) receives light from the light-emitting elements (5a) (6a) of the light-transmitting photocoupler (7a). The vertical bending of the external terminal (3) that cannot pass through the gap formed between the elements (5b) and (6b) and stops before the light transmitting photocoupler (7a) can be detected.

The above embodiment of the present invention can be variously modified. For example, while FIG. 1 shows an example in which the sensor device (7) is fixed and the electronic component (1) is moved, as shown in FIG. 5, the electronic component (1) is fixed by a pair of holders (4). , The sensor device (7) at right angles to the lead-out direction of the external terminal (3),
5), the bending of the external terminal (3) may be detected, and in this case, the same operation and effect as in the above embodiment can be obtained.

FIGS. 1 and 5 show one electronic component.
Although only (1) is shown, in actuality, as shown in FIG.
The plurality of electronic components (1) grasped by (4) are arranged at a certain interval in a direction perpendicular to the direction in which the external terminals (3) are led out, and the external terminals (3) of the plurality of electronic components (1) are bent. Single sensor device (7)
May be detected simultaneously. Also, when the bending of the external terminal (3) is detected, the bent electronic component of the external terminal (3) is detected.
Using the selection signal of the detection control circuit (8) to extract only (1), without stopping the movement of the electronic component (1) or the sensor device (7), external terminals of a plurality of electronic components (1) The bending of (3) can be detected continuously, and the productivity of the electronic component (1) can be improved.

Also, the bending of the external terminal (3) whose width changes in the longitudinal direction is detected so that the width is formed wider at the lead-out portion (3a) and narrower at the tip portion (3b). In this case, the detection signal of the leading sensor (5) that detects the wide leading portion (3a) and the detection signal of the leading sensor (6) that detects the narrow leading portion (3b) are adjusted by the width difference. Thus, a time lag due to bending can be detected.

In the above embodiment, the following effects can be obtained. [1] Since the bending of each external terminal (3) is detected while the electronic component (1) is relatively moved, the productivity is excellent. [2] Deformation of a plurality of external terminals (1) of one or more electronic components (1) can be simultaneously detected while relatively moving the electronic components (1). [3] Even if the moving speed of the electronic component (1) changes, external terminals
The bending of (3) can be instantaneously and accurately detected. [4] The bending of the external terminal (3) can be automatically detected by automatically operating the detection control circuit (8). [5] An extremely inexpensive detection device and detection method can be realized by using an existing photocoupler for the sensor device (7).

[0024]

As described above, according to the present invention, the bending of the external terminal can be detected accurately, easily and automatically, so that the productivity of electronic parts can be improved and the production cost can be reduced.
The reliability of electronic components can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a device for detecting a deformed external terminal of an electronic component according to an embodiment of the present invention.

FIG. 2 is a circuit diagram of a device for detecting a deformed external terminal of an electronic component according to the present invention;

FIG. 3 is a cross-sectional view showing a state where an external terminal passes through a photocoupler.

FIG. 4 is a waveform diagram of detection signals from a lead-side sensor and a tip-side sensor.

FIG. 5 is a plan view of a device for detecting a deformed external terminal of an electronic component according to another embodiment of the present invention.

FIG. 6 is a plan view of a device for detecting a deformed external terminal of an electronic component according to still another embodiment of the present invention.

[Explanation of symbols]

(1) ・ ・ Electronic parts, (2) ・ ・ Resin-sealed body, (3) ・ ・ External terminal, (3a) ・ ・ Outside of external terminal, (3b) ・ ・ End side of external terminal, (4 ) Holder, (5) Outlet sensor, (6) Tip sensor, (7) Sensor device,
(8) ・ ・ Detection control circuit, (14) ・ ・ Transport rail, (15)
..Transport devices,

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[Procedure amendment]

[Submission date] November 25, 1999 (1999.11.
25)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

Patent application title: Detecting device for deformed external terminal of electronic component

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a modified external terminal detecting device for an electronic component capable of selecting an electronic component having a bent external terminal.

[0002]

2. Description of the Related Art Electronic components having a resin-sealed body and a plurality of external terminals derived from the resin-sealed body in parallel with each other are used in various forms such as diodes, transistors, and hybrid ICs. When inserting an external terminal into a through-hole of a circuit board using an automatic mounting machine or the like, if the external terminal is bent, it cannot be easily inserted into the through-hole. Need to ship the product. Conventionally, the bending of the external terminal has been detected by visual inspection or an image recognition device.

[0003]

When the bending of the external terminals is visually inspected by stopping the electronic components one by one, the fatigue of the worker is increased, the inspection efficiency is remarkably reduced, and the productivity cannot be improved. However, there is a disadvantage that production costs increase due to labor costs. In addition, when an expensive image recognition device is used, each time image recognition is performed, the electronic component must be accurately positioned and fixed at a predetermined position, so that the productivity is not always high, and the manufacturing cost increases. There is.

Accordingly, an object of the present invention is to provide a modified external terminal detection device capable of identifying an electronic component having a bent external terminal. Also, the present invention provides a modified external terminal detection device for an electronic component that can continuously and automatically detect the presence or absence of bending of a plurality of external terminals while relatively moving the electronic component with respect to the sensor device. The purpose is to:

[0005]

According to the present invention, there is provided a device for detecting a deformed external terminal of an electronic component, which is derived in parallel from a resin sealing body (2) having a built-in electronic circuit and a resin sealing body (2). An electronic component (1) having a plurality of external terminals (3), and an electronic component
Sensor device that detects the passage of multiple external terminals (3) in (1)
(7) and the electronic component perpendicular to the lead-out direction of the external terminal (3)
(1) A transport device (15) for moving the sensor device (7), and a detection control circuit (8) electrically connected to the sensor device (7). The sensor device (7) is on the outlet side (3a) of the external terminal (3).
Outgoing sensor (5) that detects the passage of air and generates a detection signal
And a tip-side sensor (6) that detects the passage of the external terminal (3) on the tip side (3b) and generates a detection signal. Electronic components (1)
Or, when the sensor device (7) is moved, the detection control circuit (8)
Receives two detection signals from the output side sensor (5) and the tip side sensor (6), and generates a selection signal when there is a time lag between the two detection signals.

The sensor device (7) is constituted by photocouplers (7a, 7b) having a gap formed therein, and the external terminals (3) which bend in the direction perpendicular to the plane of the plurality of external terminals (3) are photocouplers (7a, 7a). , 7b) cannot pass through.

The sensor device (7) is moved at a right angle relative to the direction in which the external terminal (3) of the electronic component (1) is drawn out, and the lead-out portion () of the external terminal (3) is moved by the lead-out side sensor (5). 3a) is detected, and at the same time, the tip (3) of the external terminal (3) is detected by the tip sensor (6).
b) is detected. At this time, if the external terminal (3) is linear and not bent in the plane of the plurality of external terminals (3), the detection signals output from the output side sensor (5) and the distal end side sensor (6) are: Occurs at substantially the same time without a time lag. On the other hand, if the external terminal (3) is bent, a time lag is detected in the detection signals output from the output side sensor (5) and the distal end sensor (6), and the detection control circuit (8) outputs the selection signal. appear. Thus, the detection signal of the lead-out sensor (5) that detects the lead-out portion (3a) of the external terminal (3) and the tip of the external terminal (3)
The detection control circuit (8) detects a time lag between the detection signal of the front-end sensor (6) for detecting (3b) and the relative movement speed between the electronic component (1) and the sensor device (7). Even if it fluctuates, it is possible to accurately detect the displacement between the leading portion (3a) and the leading portion (3b) of the external terminal (3), that is, the bent external terminal (3). Also, since the sensor device (7) is relatively moved at right angles to the direction in which the plurality of external terminals (3) are led out, the plurality of external terminals led out of the resin sealing body (2) of the electronic component (1) are moved. The presence or absence of deformation of the terminal (3) can be detected continuously and simultaneously.

Further, a photocoupler (7a,
Since the sensor device (7) is configured by 7b), the external terminal (3) that bends in a direction perpendicular to the plane of the plurality of external terminals (3) cannot pass through the gap formed in the photocouplers (7a, 7b).

In the embodiment of the present invention, the transfer device (15)
Is a transport rail (14) for guiding the movement of the electronic component (1),
A holder (4) for holding the electronic component (1) on the transport rail (14), and the electronic component (1) is linearly moved along the transport rail (14) by a drive signal from the detection control circuit (8). Move to

[0010] The detection control circuit (8) includes a storage means for storing a predetermined time interval, and an electronic component when the time lag of the two detection signals exceeds the predetermined time interval stored in the storage means.
Comparing means for generating a selection signal for (1).

Photocoupler (7a, 7b) of output side sensor (5)
Comprises a light emitting element (5a) and a light receiving element (5b) whose optical axes coincide and are arranged facing each other or parallel to each other, and the photocouplers (7a, 7b) of the tip side sensor (6) It has a light emitting element (6a) and a light receiving element (6b) which are aligned with each other and arranged oppositely or parallel to each other.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a device for detecting a deformed external terminal of an electronic component according to the present invention will be described below with reference to FIGS.

As shown in FIG. 1, a device for detecting a deformed external terminal of an electronic component according to the present embodiment comprises a resin sealing body (2) and a plurality of external terminals led out parallel to each other from the resin sealing body (2). A holder (4) for holding an electronic component (1) having a terminal (3),
A sensor device (7) arranged adjacent to the transfer rail (14). Although not shown, an electronic circuit or a circuit board is built in the resin sealing body (2), and the electronic circuit or the circuit board is electrically connected to the external terminal (3). Sensor device
(7) is a lead-out sensor (5) that detects the passage of the external terminal (3) led out from the resin sealing body (2) on the lead-out side (3a), and is led out from the resin sealing body (2). And a tip sensor (6) for detecting passage of the external terminal (3) on the tip side (3b). Transfer device (15)
A pair of holders (4) connected to the carrier rail (14) sandwich the resin sealing body (2) of the electronic component (1) movably disposed on the transport rail (14), and the external terminals (3) are transport rails. It protrudes outside of (14). The output side sensor (5) is arranged on the side of the external terminal (3), and the distal end side sensor (6) is arranged away from the transport rail (14). Each external terminal (3) is arranged at a right angle to the length direction of the transport rail (14), and the output side sensor (5) and the tip side sensor (6)
Sensor device (7) on the opposite side of the transport device (15) so that the straight line connecting
It is arranged on the side of (14). The distance between the pair of holders (4) is
The length is slightly larger than the length of the resin sealing body (2) in the direction perpendicular to the lead-out direction of the external terminals (3).

FIG. 3 shows a specific example of the sensor device (7). FIG. 3A shows a light transmission type photocoupler (7a).
(B) shows a light reflection type photocoupler (7b). FIG. 3 (a)
The output side sensor (5) of the light transmission type photocoupler (7a) includes a light emitting element (5a) and a light receiving element (5b) which are arranged to face each other so that their optical axes coincide with each other. ) Are a light-emitting element (6a) and a light-receiving element (6
b), and the external terminal (3) of the electronic component (1) passes between the light emitting elements (5a) (6a) and the light receiving elements (5b) (6b). The light transmitting photocoupler (7a), in which the external terminal (3) passes between the light emitting elements (5a) (6a) and the light receiving elements (5b) (6b), can take a large detection signal. ) High positional accuracy is not required. The output side sensor (5) of the light reflection type photocoupler (7b) in FIG. 3 (b) includes a light emitting element (5a) and a light receiving element (5b) arranged in parallel with each other, and the tip side sensor (6) is A light-emitting element (6a) and a light-receiving element (6b) arranged in parallel to each other are provided, and the light-receiving element (5b) irradiates light from the light-emitting elements (5a) and (6a) and reflects reflected light from an external terminal (3). ) (6b) receives light. The light reflection type photocoupler (7b) using the reflected light from the external terminal (3) is suitable for downsizing the sensor device (7).

As shown in FIG. 2, the light emitting element (5a) and the light receiving element (5b) of the output side sensor (5) and the light emitting element (6a) and the light receiving element (6b) of the distal end sensor (6) are controlled by the detection control. The transport device (15) and the alarm (13) are connected to the circuit (8), and are driven by the output of the detection control circuit (8). The transfer device (15) is a detection control circuit
A motor or actuator (not shown) electrically connected to (8) and moving the pair of holders (4) along the transport rail (14) is provided.

When detecting the deformed external terminal (3), a drive signal is applied from the detection control circuit (8) to the transport device (15),
As shown in FIG. 1, the transfer device (15) is driven to move the transfer rail (1).
The electronic component (1) is moved along 4). At this time, power is supplied from the detection control circuit (8) to the sensor device (7), and the output side sensor (5) and the distal end side sensor (6) are turned on. Electronic components
When (1) is moved, the plurality of external terminals (3) sequentially pass through the output side sensor (5) and the tip side sensor (6) simultaneously, and the output side sensor (5) leads out of the external terminal (3). At the same time as detecting the portion (3a), the front-end sensor (6) detects the front end (3b) of the external terminal (3) and sends a detection signal to the detection control circuit (8). At this time, in the plane of the plurality of external terminals (3),
When (3) is not bent, the detection signal output from the outlet-side sensor (5) and the front end side sensor (6), as shown in FIG. 4 (a), substantially without a time lag at time t ₁ at the same time it turned on, because a substantially simultaneously turned off at time t _2, substantially detected signal at the same time is generated. Resin sealing body (2)
When continuously detecting a plurality of external terminals (3) derived from the above, as shown in FIG.
This is repeated for the number of (3). When a detection signal without a time lag is received from the lead-out sensor (5) and the tip-end sensor (6), the detection control circuit (8) sends a drive signal to the transport device (15).

When the external terminal (3) is bent, FIG.
As shown in (b), the detection signal of the output side sensor (5) is turned on at time t ₁ and turned off at time t ₂ , whereas the detection signal of the distal sensor (6) is turned on at time t ₁ and at time t _1. offset from t _2, at time t ₃ and t ₄ on, off, time lag t ₀
Occurs. For example, if the distal end (3b) of the external terminal (3) is bent in the opposite direction to the transport direction, the detection signal of the distal end sensor (6) turns on and off with a delay. When it is measured that the time lag t ₀ exceeds a predetermined time interval, the detection control circuit (8) sends an activation signal to the alarm (13) as a selection signal,
A stop signal is sent to the transport device (15).

Even if the external terminal (3) is actually formed in a straight line without bending, the detection signals of the output side sensor (5) and the distal end side sensor (6) are strict due to difficulty in adjusting the mounting accuracy or timing. Does not occur at the same point in time, and a slight time lag occurs. Therefore, a time allowable range of the time lag is set in advance in the storage means of the detection control circuit (8). The comparing means for judging whether the detected time lag is longer than a predetermined time interval stored in the storage means is provided by a detection control circuit.
Provided in (8). When the detected time lag exceeds a predetermined interval, the comparison means of the detection control circuit (8) sends a stop signal to the transport device (15) as a selection signal and sends an operation signal to the alarm (13), so that the Electronic component (1) with bent terminal (3)
Can be easily sorted. In this case, the electronic components
Even if the moving speed of (1) fluctuates, the time lag of the detection signals of the leading-side sensor (5) and the tip-side sensor (6) according to the moving speed can be instantaneously and accurately detected.

Further, since the external terminal (3) is relatively moved with respect to the pair of output side sensor (5) and the tip side sensor (6),
Not only when detecting the bending of one external terminal (3),
As shown in FIG. 4, the bent state of the plurality of external terminals (3) derived from the resin sealing body (2) of the electronic component (1) can be simultaneously detected. If the external terminal (3) is bent in a direction perpendicular to the plane of the plurality of external terminals (3), the external terminal (3) receives light from the light-emitting elements (5a) (6a) of the light-transmitting photocoupler (7a). The vertical bending of the external terminal (3) that cannot pass through the gap formed between the elements (5b) and (6b) and stops before the light transmitting photocoupler (7a) can be detected.

The above embodiment of the present invention can be variously modified. For example, while FIG. 1 shows an example in which the sensor device (7) is fixed and the electronic component (1) is moved, as shown in FIG. 5, the electronic component (1) is fixed by a pair of holders (4). , The sensor device (7) at right angles to the lead-out direction of the external terminal (3),
5), the bending of the external terminal (3) may be detected, and in this case, the same operation and effect as in the above embodiment can be obtained.

FIGS. 1 and 5 show one electronic component.
Although only (1) is shown, in actuality, as shown in FIG.
The plurality of electronic components (1) grasped by (4) are arranged at a certain interval in a direction perpendicular to the direction in which the external terminals (3) are led out, and the external terminals (3) of the plurality of electronic components (1) are bent. Single sensor device (7)
May be detected simultaneously. Also, when the bending of the external terminal (3) is detected, the bent electronic component of the external terminal (3) is detected.
Using the selection signal of the detection control circuit (8) to extract only (1), without stopping the movement of the electronic component (1) or the sensor device (7), external terminals of a plurality of electronic components (1) The bending of (3) can be detected continuously, and the productivity of the electronic component (1) can be improved.

Also, the bending of the external terminal (3) whose width changes in the longitudinal direction is detected so that the width is formed wider at the lead-out portion (3a) and narrower at the tip portion (3b). In this case, the detection signal of the leading sensor (5) that detects the wide leading portion (3a) and the detection signal of the leading sensor (6) that detects the narrow leading portion (3b) are adjusted by the width difference. Thus, a time lag due to bending can be detected.

In the above embodiment, the following effects can be obtained. [1] Since the bending of each external terminal (3) is detected while the electronic component (1) is relatively moved, the productivity is excellent. [2] Deformation of a plurality of external terminals (1) of one or more electronic components (1) can be simultaneously detected while relatively moving the electronic components (1). [3] Even if the moving speed of the electronic component (1) changes, external terminals
The bending of (3) can be instantaneously and accurately detected. [4] The bending of the external terminal (3) can be automatically detected by automatically operating the detection control circuit (8). [5] An extremely inexpensive detection device can be realized by using an existing photocoupler for the sensor device (7).

[0024]

As described above, according to the present invention, the bending of the external terminal can be detected accurately, easily and automatically, so that the productivity of electronic parts can be improved and the production cost can be reduced.
The reliability of electronic components can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a device for detecting a deformed external terminal of an electronic component according to an embodiment of the present invention.

FIG. 2 is a circuit diagram of a device for detecting a deformed external terminal of an electronic component according to the present invention;

FIG. 3 is a cross-sectional view showing a state where an external terminal passes through a photocoupler.

FIG. 4 is a waveform diagram of detection signals from a lead-side sensor and a tip-side sensor.

FIG. 5 is a plan view of a device for detecting a deformed external terminal of an electronic component according to another embodiment of the present invention.

FIG. 6 is a plan view of a device for detecting a deformed external terminal of an electronic component according to still another embodiment of the present invention.

[Explanation of symbols] (1) ··· Electronic components, (2) ··· Resin sealed body, (3) ··· External terminal, (3a) ··· Outside of external terminal, (3b) ····· Tip side, (4) Holder, (5) Lead-out side sensor, (6) Tip side sensor, (7) Sensor device,
(8) ・ ・ Detection control circuit, (14) ・ ・ Transport rail, (15)
..Transport devices,

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2F065 AA65 BB15 BB18 CC27 DD06 FF02 FF32 FF34 GG12 HH13 JJ01 JJ05 JJ18 KK01 MM03 PP11 PP22 QQ25 TT01 UU05 2F069 AA68 BB13 BB36 BB40 DD15 DD16 GG10 GG04 GG01

Claims (7)

[Claims] An electronic component having a resin sealing body in which an electronic circuit is built, a plurality of external terminals led out of the resin sealing body in parallel with each other, and detection of passage of the electronic component through the plurality of external terminals. A sensor device, a transfer device that moves the electronic component or the sensor device at right angles to a direction in which the external terminals are led out, and a detection control circuit electrically connected to the sensor device. A lead-side sensor that detects the passage of the external terminal led out from the resin sealing body on the lead-out side and generates a detection signal, and detects the passage of the distal end side of the external terminal led out from the resin sealing body. A tip side sensor that detects and generates a detection signal, and when the electronic component or the sensor device is moved, the detection control circuit outputs two detection signals from the lead-out side sensor and the tip side sensor. Receiving Electronic component variations external terminal detecting apparatus characterized by generating a selection signal when two of the detection signal a time lag. 2. The transfer device according to claim 1, further comprising: a transfer rail that guides the movement of the electronic component; and a holder that holds the electronic component on the transfer rail, wherein each of the external terminals is a length of the transfer rail. The sensor device is disposed adjacent to the transport rail so that a straight line connecting the output side sensor and the front end side sensor is parallel to the external terminal. 2. The device for detecting a deformed external terminal of an electronic component according to claim 1, wherein the electronic component is linearly moved along the transport rail by the drive signal. 3. The detection control circuit according to claim 1, wherein the storage means stores a predetermined time interval, and the time lag between the two detection signals exceeds a predetermined time interval stored in the storage means.
3. The device according to claim 1, further comprising a comparison unit configured to generate a selection signal for the electronic component. 4. The sensor device according to claim 1, wherein the output-side sensor includes a light-emitting element and a light-receiving element that are disposed so as to face each other so that the optical axis is aligned, and the tip-side sensor is opposed so that the optical axis is aligned. Comprising a light emitting element and a light receiving element arranged as
A light-transmitting photocoupler or an output-side sensor in which an external terminal of the electronic component passes between the light-emitting element and the light-receiving element includes a light-emitting element and a light-receiving element arranged in parallel with each other, and the tip-side sensor is A light-reflecting photocoupler comprising: a light-emitting element and a light-receiving element arranged in parallel with each other, wherein the light-receiving element receives light reflected by the external terminal that irradiates light from the light-emitting element and passes therethrough. 1-3
The device for detecting a deformed external terminal of an electronic component according to claim 1. 5. A step of relatively moving a sensor device at right angles to a direction in which the plurality of external terminals led out from a resin sealing body constituting an electronic component, and a step of passing the external terminals on a lead-out side. A step of extracting a detection signal of the sensor on the output side of the sensor device to be detected, and a detection signal of the sensor on the output side of the sensor device for detecting passage of the external terminal on the distal side; and Detecting the presence or absence of a time lag between the two detection signals by a detection control circuit; and generating a selection signal for the electronic component when the detection control circuit detects a time lag. A method for detecting deformed external terminals of parts 6. The method according to claim 5, further comprising the step of linearly moving said electronic component by said transport device along a transport rail.
4. A method for detecting a deformed external terminal of an electronic component according to claim 1. 7. The method according to claim 5, further comprising the step of generating a selection signal from the detection control circuit when the detected time lag exceeds a predetermined time interval.