JPH1012785A - Lead correcting device for surface mounted component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lead correcting device to correct defective loads, reduce man-hours and improve accuracy. SOLUTION: Leads are taken in a memory as image data, a distance from the image data to leads is measured, defective leads deviated from the predetermined standard range of distance for good products are grasped with a correcting hand, and defective leads are automatically corrected within the reference range by hand. At this time, the electronic components are fixed with the upper fixing portion 1 and lower fixing portion 5, and the bends of leads are corrected with the correcting hand 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for repairing leads of electronic parts, and more particularly to an apparatus suitable for use in correcting lead bending of surface-mounted parts.

[0002]

2. Description of the Related Art A semiconductor integrated circuit device is mounted on a package having external leads and is commercialized as an integrated circuit. The integrated lead is inserted into and removed from a measuring socket in various inspection processes of a product test, and the external lead may be bent or misaligned. Yes,
It also causes a decrease in the operation rate of the inspection device. For this reason, the bending of the external lead is inspected by setting an accuracy standard between processes and before product shipment, and the external lead having a bending outside the reference range is corrected. In many cases, the correction is performed manually by an operator within the accuracy standard for each lead. That is, as shown in the flowchart of FIG. 4, in the determination of a partially good product, when a defective lead is detected, a manual correction is performed (step S43), and the quality of the lead is determined (step S44). Repeat the correction until complete.

[0003]

The method of manual correction requires a considerable number of work steps, and there is a problem that there is a great difference between workers who make corrections, and there is a great difference.

As an apparatus for automatically correcting external lead bending, for example, Japanese Patent Application Laid-Open No. 57-128946 discloses an apparatus in which an electronic component is conveyed onto a guide rail by a forced feed mechanism as shown in FIG. An electronic component in which a correction mechanism is provided by a combination of an inner wheel 55 for correcting an external lead to the outside and an outer wheel 56 for correcting the inside to the outside at a passage portion of the lead 51A, and the bending of the external lead is automatically corrected. Has been proposed. In other words, the outer leads 51A having variations due to the occurrence of bending are sent to the inner wheel 55, and the respective outer leads are sequentially corrected outward (corrected outward slightly more than the finally corrected inclination), and further. It is corrected inward by the outer wheel 56 and finally corrected within the accuracy standard. However, the lead bending correcting device described in the above publication only corrects the outer and inner sides of the variation in the degree of opening of the external leads (that is, the degree of opening in the direction orthogonal to the direction in which the plurality of leads are arranged). As shown in FIG. 2A, the bending deformation of the lead in which the distance to the adjacent lead differs at the shoulder and the tip of the foot cannot be corrected. Furthermore,
If the deformation of the defective lead is bent, for example, so as to protrude outside the end face of the outer wheel 56, the lead cannot be corrected by the apparatus disclosed in the above-mentioned publication, and the lead is further conveyed by the forced feed mechanism. There is even.

Accordingly, the present invention has solved the above problems,
An object of the present invention is to provide a repair device that automatically corrects a defective lead, thereby reducing the number of man-hours of a worker, improving the accuracy of correction, and suppressing variations.

[0006]

In order to achieve the above object, a surface mount component lead correcting device of the present invention takes in leads of electronic components into a memory as image data and measures a distance between the leads from the image data. A defective lead whose distance deviates from a predetermined non-defective reference range is grasped by a correction hand, and the defective hand is automatically corrected within the reference range by the correction hand.

Further, the present invention provides a means for supporting and fixing an electronic component from both upper and lower sides, and a drive controllable independently movable and fixed independently in at least one direction and a direction opposite to the direction, and A correction hand comprising: two pins for gripping an external lead; a support for supporting the pin; and means for driving the support to rotate. It is characterized in that the external lead is automatically corrected to a normal state by grasping with the pin and moving the pin and / or the correction hand in a direction to eliminate the deviation amount.

An outline of the present invention will be described below. The present invention grasps a correction lead recognized by image processing with a hand and automatically corrects the correction lead, and includes an upper fixing portion and a lower fixing portion for fixing a correction component, a correction pin constituting a correction hand, and a rotating portion. Have.

According to the present invention, the correction of the component leads is automatically performed, thereby eliminating the need for manual correction of the leads. According to the present invention, the lead correction is performed by recognizing the image of the lead, detecting the amount of bending, and determining the quality of the lead. If the lead is defective, the lead is automatically corrected by the amount of the bending by the correcting hand. Therefore, the man-hour required for the worker can be reduced, and the lead correction can be performed accurately. In particular, according to the present invention, the correction hand can correct the lead with as high accuracy as if the worker corrected the displacement of the lead with, for example, tweezers.

[0010]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a diagram for describing an embodiment of the present invention.

Referring to FIG. 1A, a surface mount component 2 having a correction lead 4 recognized by image processing is fixed by an upper fixing portion 1 and a lower fixing portion 5 and corrected by a correction hand 3. Referring to the front view shown in FIG. 1 (B), the correction hands 3 are driven and controlled independently of each other in the left-right direction of the figure and are fixed at desired positions. A rotating part 7 to which the correction pin 6 is attached, and a rotating shaft 8 for rotating the rotating part 7 are provided. The lead is grasped by the two correction pins 6 and the position can be moved in both the left and right directions. A desired angle of rotation including the twist of the external lead is automatically corrected within a reference range by a combination of these movements in conjunction with the rotation shaft 8 together with 7.
Known actuators and servo systems for driving the correction hand are used.

FIG. 3 shows the operation of the embodiment of the present invention.
This will be described below with reference to the flowchart of FIG. First, the defective component is image-recognized using the image processing means (step S3).
1).

Next, based on the result of the image processing, detection of a defective lead and calculation of a deviation amount are performed (step S32). For detecting a defective lead and calculating the amount of deviation of the lead based on the image data, for example, scanning is performed by a CCD camera or the like, an image signal is captured as digital image data in an image memory, the distance between the leads is measured, and a preset distance is set. Those that are out of the range of good products are detected as defective leads.

Then, the defect detected as a defect is automatically corrected by the lead correction device (step S34), and the process is repeated until the correction of all pins is completed.

Next, as an example of the present invention, a specific operation of the lead correcting device according to the above embodiment will be described with reference to FIG.
This will be described with reference to FIG.

First, in the lead shown in FIG. 2A, in order to correct the shoulder of the lead, the point A is grasped with a first correction hand, and as shown in FIG. .

Next, as shown in FIG. 2C, to correct the lead foot, the point B of the lead foot is fixed to the second correction hand while the point A is fixed by the first correction hand. To fix the gap and improve the defect.

Although the above embodiment has been described with reference to the example of correcting the displacement of the lead of the surface mount component, the present invention is not limited to the surface mount component but can be applied to various electronic components.

[0019]

As described above, according to the present invention,
When correcting defective leads of electronic components such as surface mount components,
Since the configuration is such that the defect is detected by the image recognition and the correction is automatically performed using the correction hand, the man-hour required for the correction can be greatly reduced and the correction can be performed accurately.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a lead correction unit according to an embodiment of the present invention.

FIG. 2 is a diagram schematically illustrating a state of a repair process of a lead repair unit according to the embodiment of the present invention.

FIG. 3 is a flowchart for explaining the operation of the exemplary embodiment of the present invention.

FIG. 4 is a flowchart for explaining a conventional technique.

FIG. 5 is a diagram showing a configuration of a conventional lead correction device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper fixed part 2 Correction part 3 Correction hand 4 Correction lead 5 Lower fixed part 6 Correction pin 7 Rotation part 8 Rotation axis

Claims (4)

[Claims] 1. A lead of an electronic component is loaded into a memory as image data, a distance between the leads is measured from the image data, and a defective lead whose distance deviates from a predetermined reference range of a good product is grasped by a correction hand. And a correction hand that automatically corrects the defective lead within a reference range with the correction hand. 2. A means for supporting and fixing an electronic component from both upper and lower sides, and being driven and controlled so as to be movable and fixed independently of each other in at least one direction and a direction opposite to the direction, to grip an external lead of the surface mount component. A correction hand including two pins, a support portion for supporting the pins, and means for driving the support portion to rotate; and gripping the external lead, in which a deviation has been detected, with the pin of the correction hand. A lead correction device for automatically correcting the external lead to a normal state by moving the pin and / or the correction hand in a direction to eliminate the deviation amount. 3. The lead correction device according to claim 2, wherein the amount of deviation of the external lead is calculated by taking the external lead as image data and comparing it with predetermined reference data. 4. For a bent-type lead in which the distance between the leads is different between the shoulder and the foot, first, the shoulder is gripped by a first correction hand to correct it to a normal position, and then the first is corrected. In a state where the shoulder is fixed with the correction hand, the foot is grasped with the second correction hand, and the foot is moved and corrected so as to be in a regular position, thereby correcting the displacement of the lead. The lead correcting device according to claim 2, wherein