JPH02242143A - Method and apparatus for inspecting stick housed type electronic component - Google Patents

Abstract

PURPOSE:To achieve a quicker inspection of electronic components by a method wherein a stick housing a number of electronic components in series arranged being inclined while it is turned parallel with its axis center to align the components and the components are irradiated with X rays sandwiching the stick to detect. CONSTITUTION:An apparatus body 100 tilts a carry-out port 102 downward and shutters 103 and 104 open or close only when a stick W passes. When the stick is conveyed from a supply section 200 and reaches a positioning section 300a, electronic components inside contact one another with no gap by a gravity thereof while they are shifted to one side with a rotation thereof to about 45-90 to perform a horizontal positioning. With an intermittent action of conveying rollers, the electronic components are arranged at an X-ray irradiation position within an inspecting section 400 to be inspected by fluoroscopy with an X rays generation source 401 and an X-ray camera 402. After the end of inspection of all components within the stick, a rear-stage conveyance positioning section 300b is turned continuously to carry out them to a storage section 500 from the carry-out port 102.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to a stick (sometimes referred to as a magazine).
The present invention relates to a method and apparatus for testing electronic components stored in a stick type, such as ICs, transistors, semi-fixed resistors, etc., for non-destructive testing using soft X-rays.

[Conventional technology and its issues] Electronic components manufactured in the electronic component manufacturing process are inspected for the presence of broken wires, broken single lines, poor lead wire connections, etc., and only non-defective products are shipped. The inspection is generally performed by non-destructive inspection using X-ray fluoroscopic images.

Incidentally, as shown in FIG. 7, a large number of electronic components such as ICs, certain types of transistors, and semi-fixed resistors are stored and transported in hollow rod-shaped sticks W made of plastic, aluminum alloy, or the like. Therefore, if a large number of electronic components can be inspected continuously while stored in the stick W, inspection can be speeded up.

However, the electronic components inside the stick W.

Because there are large gaps in the front, back, left, and right, the position of the electronic component varies, and the position of the electronic component cannot be determined even if the stick is supplied to the X-ray inspection device while the stick is stored.Therefore, conventionally, the electronic component was Inspections are carried out by attaching the device to an X-ray inspection device, which has the problem of poor workability.

The present invention has been made in view of these problems, and provides a method and method for testing electronic components stored in a stick, which allows electronic components to be tested while stored in a stick, thereby speeding up the testing. The purpose is to provide equipment.

[Means for Solving the Problems] In order to achieve the above object, the method for inspecting stick storage type electronic components of the present invention involves arranging a stick storing a large number of electronic components in series in a forward or backward tilting position, and Align the electronic components in the stay rack by rotating the stick at any angle in the clockwise or counterclockwise direction around the axis or a rotation axis parallel to the axis.
Thereafter, the electronic components inside the stick are inspected by irradiating the stick with X-rays from one position and detecting the transmitted X-rays at the other position.

In addition, the stick storage type electronic component inspection device of the present invention includes a supply section that supplies sticks containing a large number of electronic components in series one by one, and the supplied sticks are arranged in a forward or backward tilted position. , a transport positioning unit that rotates the stick at an arbitrary angle in the clockwise or counterclockwise direction around the axis or a rotation axis parallel to the axis, and an It consists of an inspection section equipped with an X-ray camera at the other position, and a storage section that stores the sticks that have been inspected by the inspection section.If necessary, as a result of the inspection, the sticks are determined to be defective. A marking machine is installed to mark the area on the stick surface where the identified electronic component is to be stored.

[Examples] Examples of the present invention will be described below with reference to the drawings.

First, two embodiments of the apparatus of the present invention will be described based on FIGS. 1 to 4.

FIG. 1 is a longitudinal sectional view showing the overall configuration of a stick storage type electronic component inspection device, FIG. 2(a) is a longitudinal sectional view showing an enlarged transport positioning section, and FIG. Third
The figure is a configuration diagram showing an enlarged cross section taken along the line A-A in FIG.

In FIG. 1, 100 is the main body of the device, 200 is a supply unit that supplies a stick W containing a large number of electronic components in series;
Reference numeral 300 denotes a transport positioning section consisting of a front transport positioning section 300a and a rear transport positioning section 300b, 400 an inspection section that uses soft X-rays to inspect the electronic components in the stick W that has been transported, and 500 a stick that has been inspected. It is a storage section that stores.

The supply unit 200 is provided in connection with the supply port 101 of the apparatus main body 100, and has a pedestal 201 that stores sticks W one by one, and the rotation of the supply roller 202 allows the sticks W to be stacked one by one to be stacked one by one. It is pulled out one by one in the axial direction and supplied into the apparatus main body 100.

Inside the apparatus main body 100, an inspection section 400 is provided in the center, and a pre-stage transport positioning section 300a is located between the supply port 101 and the inspection section 400, and between the inspection section 40 port and the carry-out port 102. A rear stage conveyance positioning section 300b is provided in each of the two stages. The main body 100 of the apparatus is tilted with the outlet 102 side facing downward, and accordingly, the transport path of the stick W on the front transport positioning section 300a and the rear transport positioning section 300b is also tilted with the front section facing downward. . Further, the supply port 101 and the export port 102 of the apparatus main body 100 are provided with opening/closing shutters 10:l, 104, and the shutters 10 are opened/closing only when the stick W passes through.
3. Open IO2 to prevent X&I leakage.

The front stage transport positioning section 300a is shown in FIG. 2(a).

As shown in (b), conveyance rollers 302 are provided at regular intervals on a long housing 301, and a timing belt]0
The power of the drive motor 303 is transmitted to these conveyance rollers 302 via :la and :+03b, and the stick W is conveyed rightward in the figure. Conveyance roller 302
An upper guide roller 304 is provided at a position facing the stick W, and guides the stick W by sandwiching the upper and lower surfaces thereof between the transport roller 302 and the upper guide roller 304. Further, 305 is a side guide roller, which guides the side surface of the stick W by a pair of horizontally provided rollers.

Reference numeral 306 denotes a rotating ring member for rotating the front-stage conveyance positioning section 300a, which is disposed on the outer periphery of the front and rear ends of the housing 301, and at the bottom of the housing 30.
It is connected to 1. A support band 307 is externally fitted onto the rotating ring member 306, and a support pulley 308 fixed to the device main body 100 is attached to the support band 307 from three directions.
7 (see FIG. 3), the one-rotation ring member 306 is rotatably supported and fixed. Thereby, the housing 301 is also supported and fixed via the rotating ring member 306. Furthermore, an external gear 309 is formed on the rotating ring member 306. This external gear 309 has gear 3.
10 are in mesh with each other, and power from a motor 312 is transmitted via a drive belt 311. This causes the rotating ring member 306 to rotate by a certain angle in the clockwise or counterclockwise direction around the axis O or a rotation axis parallel to the axis O. The zero rotation angle can be set arbitrarily. It is possible, but usually the angle at the time of supply is 0 degrees, -
It is sufficient to set the angle to about 45 degrees to +90 degrees.

Reference numeral 313 denotes a stopper, and the claw 15 rotates around the support shaft 316 by driving the air cylinder 314, and projects onto the conveyance path of the stick W. A sensor such as a contact switch is attached to the claw 315, and when the tip of the stick W comes into contact with this sensor, the control/processing unit 700 (described later)
to stop the rotation of the conveyance roller 302.

The latter stage conveyance positioning section 300b has the same overall configuration as the first stage conveyance positioning section 300a, except that the installation positions of the conveyance roller and the upper and side guide rollers are slightly different.

The inspection section 400 is equipped with an X-ray generation source 401 at an upper position across the transportation path of the stick W, and a movable X-ray camera 402 at a lower position. For example, the X-ray source 401 has a focal length of 0.3
mm, X-ray output 1 [10 kV, / 3 mA (7)
A soft X-ray output tube may be used, and an X-ray camera 402
are driven by a drive mechanism 403 in the directions of arrows a and b in FIG. can be avoided.

The drive mechanism 403 moves the first ball screw 406 in the axial direction (direction a) by rotating the first ball bearing 404 with the first drive motor 405, and is connected to the first ball screw 406 accordingly. The X-ray camera 402 is moved in the direction a. Further, the first drive motor 405 and the first ball bearing 404 are attached to the movable base 407, and by rotating the second ball screw 409 with the second drive motor 408, the second ball bearing 41O (the movable base 407) is moved. direction, and the X-ray camera 402 is accordingly moved in the b direction.

By the way, the inspection section 400 is partitioned by a protective wall 411 to prevent leakage of X-rays, and a shutter 412 is provided in front of the X-ray source 401, and this shutter 412 is opened only when X-rays are irradiated. It is supposed to be done.

In FIG. 3, 600 is a marking machine, and a cylinder rod 6 is driven in the axial direction by an air cylinder 601.
A marking ben 603 is attached to the tip of 02.

On the other hand, the cap 604 of the marking ben 603 is fixed to a mounting plate 606 that is rotatable about a support shaft 605. The mounting plate 606 is rotated by a drive motor (not shown). The marking machine 600 starts from the state shown in FIG.
0 from the cap 604 by moving it in the direction C shown in the figure.
Next.

By moving the mounting plate 606 clockwise in the figure,
The cap 604 is avoided from the movement line of the cylinder rod 602 (marking ben 603). Then, the marking ben 603 is moved in the direction d in the figure to mark the surface of the stick on the conveyance path. This series of operations is performed by control signals from a control/processing section 700, which will be described later. The control/processing unit 700 is
As a result of the inspection, the marking machine 600 is controlled to mark the surface of the stick in the area where the electronic component determined to be defective is to be stored.

The storage section 500 includes a pedestal 501 that accommodates the stick W that has been carried out to the outlet 102 by the rear transport positioning section 300b.

FIG. 4 is a front view of the control/processing section.

The control/processing unit 700 includes a control device (built-in) that controls the operation of each part of the device, an operation panel 701, and an inspection unit 400.
An image processing device (built-in) that processes the inspection signal from the
A video monitor 702 is provided.

This control/processing section 700 is separate from the main body 100 of the apparatus, and is connected to each part of the apparatus by a signal cable 703. Therefore, it is suitable for any work environment and has improved operability.

Next, an embodiment of a method for testing stick storage type electronic components using the above-mentioned testing device will be described.

Figure 5 is a flowchart of the inspection method, Figure 6 (a)
, (b) are cross-sectional views showing the positioning of electronic components within the stick.

First, sticks W containing electronic components not to be inspected are stacked and arranged in the supply section 200, and the control/processing section 7
When the start switch on the operation panel 701 of 00 is turned on (START), the inspection is continuously performed on all the sticks W arranged in the supply section 200.

The supply roller 202 of the supply section 200 rotates, and the supply section 20
The stick W placed at the lower end inside the supply port 101
Through the front stage transport positioning section 300 in the device main body 100
a (step 1).

In the first stage transport positioning section 300a, the transport roller 302 rotates continuously and transports the stick W. At this time 3
The stopper 313 protrudes onto the conveyance line, and detects when the tip of the stick W being conveyed comes into contact with a sensor provided on the claw 315, and stops the conveyance roller 302. In this way, the entire stick W is placed within the first-stage transport positioning section 300a (step 2).

Since the front stage transport positioning section 300a is inclined with the front part facing downward, each electronic component in the stick W comes into contact with each other without gaps due to gravity, as shown in FIG. 6(a), and positioning in the front stage direction is performed.

Next, the ring member 306 is rotated once by an arbitrary angle to make the stick W on the front-stage transport positioning section 300a tilted when viewed from the front or rear (step 3). As a result, each electronic component in the stick W is As shown in FIG. 6(b), the object is moved to one side by gravity, and positioning is performed in the left-right direction.

After positioning in the front-rear and left-right directions in this way, the stopper 313 is released, and the transport roller 302 is rotated intermittently to feed the stick W in steps (step 4). Set to the length of the part. By step feeding, the electronic components in the stick W are placed one by one at the X-ray irradiation position in the inspection section 400. Note that the rotary ring member of the second-stage transport positioning section 300b also rotates in synchronization with the first-stage transport positioning section 300a.
In addition, the conveyance roller performs a step-feeding operation, and conveys the stick W that has passed through the inspection section 400.

With electronic components placed at the xi irradiation position.

An X-ray camera 402 is placed close to the bottom surface of the stick W. Then, X-rays are emitted from the X-ray source 401, and the X-rays that have passed through the electronic components are received by the X-ray camera 4Q2 (
Step 5). Since the X-rays emitted from the X-ray generation source 401 are soft X-rays, particularly clear X-ray fluoroscopic images can be obtained in the case of small electronic components and the like.

The X-ray fluoroscopic image input to the X-ray camera 402 is sent to the image processing device of the control/processing unit 700, undergoes image processing, and is displayed on the video monitor 702. The inspector visually inspects the displayed image and determines whether it is an electronic component or a defective product (step 6).

As a result of the visual inspection, if it is determined that the electronic component is defective, the marking machine activation switch provided on the operation panel 7Ql of the control/processing section 700 is turned on to operate the marking machine 600 (step 7). Markings are made on the surface of the stick where electronic components are stored, and after the inspection is complete, defective electronic components are removed using the markings as a guide.

After performing the operations in steps 4 to 6 above (up to step 7 if applicable) for all electronic components in the stick W, the conveyance roller of the rear conveyance positioning section 300b is continuously rotated, and the The entire stick W is placed in the rear conveyance positioning section 300b.Next, the rotary ring member of the rear conveyance positioning section 300b is rotated, so that the posture of the stick W as seen from the front or rear is made horizontal. Then, the transport roller is continuously rotated to transport the stick W from the exit 102 to the storage section 500 (Step 8).

When the above operations are completed for all the sticks W arranged in the supply section 200, the start switch on the operation panel 701 of the control/processing section 700 is turned off to end the test (END).

Note that the present invention is not limited to the embodiments described above, and various modifications can be made without changing the gist.

For example, positioning the stick in the front and back direction.

This may be done by tilting the stick so that the rear part faces downward. Moreover, the determination of defective products does not have to be based on visual inspection, but may be automatically performed by using a computer to compare images of normal crystals and X-ray fluoroscopic images.

[Effects of the Invention] As explained above, according to the method and apparatus for testing electronic components stored in a stick according to the present invention, electronic components can be tested while stored in a stick, thereby speeding up the testing. It can make the work easier.

[Brief explanation of drawings]

1 to 4 are diagrams for explaining an embodiment of the device of the present invention, FIG. 1 is a longitudinal sectional view showing the overall configuration of the device, and FIG. 2(a) is an enlarged view of the conveyance positioning section. A vertical cross-sectional view shown in
FIG. 2(b) is a plan view, FIG. 3 is a block diagram showing an enlarged cross section taken along the line AA in FIG. 1, and FIG. 4 is a front view of the control/processing section. 5 and 6 (a) and (b) are diagrams for explaining an embodiment of the method of the present invention, FIG. 5 is a flowchart of the method, and FIG. 6 (a) and (b) are respectively FIG. 3 is a cross-sectional view showing the positioning of electronic components within the stick. FIG. 7 is a partially cutaway sectional view of the electronic component storage stick. 100: Apparatus main body 103, 104: Opening/closing shutter 200: Supply section 300: Transport positioning section 300
a: Front-stage transport positioning section 300b: Back-stage transport positioning section 306: Rotating ring member 3: Stopper 400: Inspection section 401: X-ray source 402: X-ray camera 403: Drive mechanism 50〇 Two storage sections 6
00: Marking machine 700: Control/processing section

Claims (3)

[Claims] (1) A stick containing a large number of electronic components stored in series is placed in a forward or backward tilted position, and the stick is rotated clockwise or counterclockwise around the axis or a rotation axis parallel to the axis. Align the electronic components inside the stick by rotating it at an arbitrary angle, then irradiate the stick with X-rays from one position and detect the transmitted X-rays at the other position. A method for inspecting stick storage type electronic components. (2) A supply port for supplying sticks containing a large number of electronic components in series one by one, and placing the supplied sticks in a forward or backward tilted position, and aligning the sticks with the axial center or axial center. A transport positioning unit that rotates an arbitrary angle clockwise or counterclockwise around parallel rotation axes, and an X-ray source at one position and an X-ray source at the other position across the transported stick. 1. A stick storage type electronic component inspection device, comprising: an inspection section equipped with a camera; and an exit for carrying out sticks that have been inspected in the inspection section. (3) The stick-storage type electronic component inspection device according to claim 2, further comprising a marking machine that marks the surface of the stick in a portion where electronic components determined as defective as a result of the inspection are to be stored. A stick storage type electronic component inspection device.