JPS6076134A - Inspecting device for appearance of shaft-shaped member - Google Patents

Abstract

PURPOSE:To inspect the appearances of shaft-shaped members, which are made a continuous feed at higher speed, in a simple structure by a method wherein a transferring unit for the shaft-shaped members, a defective existence detecting part, a line sensor to detect light to come out of the outer peripheral faces of the shaft-shaped members and a treating part are provided. CONSTITUTION:As shaft-shaped member 1 is exemplified a glass sealed DHD diode. The diodes are made a continuous feed on a chain conveyor 6 and rach the lower side of a line sensor 9 through the position of a defective existence detecting part 8. The output of the line sensor 9 steeply drops at the end parts 2a and 2b and the parts of seals 5a and 5b of the glas sleeve 2 of the diode 1, binary treatment and waveform shaping process are performed at a treatment part 14, the respective number of pulses a', b', c' and d' and the pulse intervals are decided whether they are respectively in the previously set extents, and decision of good or bad of the seals is made. When the diodes 1 reached the lower side of a drawing-out unit 13, the drawing-out unit 13 acts selectively and removes defective diodes from the conveyor 6.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to an outer f1. ↓Regarding the inspection device, what does it look like when the shaft is continuously fed on a moving device that arranges and moves it at regular intervals in a direction perpendicular to the axis? This invention relates to a device that can be inspected.

Background technology A shaft-shaped member, for example, a total of four leads from the component body in both directions.
Electrons such as emitted diodes and resistors? During the manufacturing process, fIS products are inspected for electrical characteristics, judged to be good or bad, graded, and good products are stamped with a German name, value, lot number, etc., taped, packed in bags, and shipped. In order to carry out all of these processes continuously, the electronic components are sent to each process by a chain conveyor or the like, with both ends of the leads supported and arranged at regular intervals.

Before shipping, the product is inspected for appearance, including stamping status and external shape. In order to fully automate this inspection, it is conceivable to fully utilize the so-called pattern dm1ff, which uses a television camera to convert the signal into an electrical signal to maintain its appearance, pattern it, and analyze it. Since it was moving at high speed, the acquisition time was short, and reliable analysis was not possible. For this reason, all television cameras were not used, and each television camera captured all of the electronic components that were continuously moving, followed them at a certain distance, captured them as still images of all the electronic components, and analyzed the pattern. Although it is possible to carry out a sufficient visual inspection even in a continuous high-speed feed state by returning the electronic components to the previous position and then returning the entire operation to capture all of the electronic components, there are disadvantages such as the equipment being sloppy and the costs involved. Ta.

For this reason, relying on visual inspection VC does not allow for continuous feeding, and also leads to erroneous judgments due to worker fatigue, so improvements have been desired.

SUMMARY OF THE INVENTION The present invention provides an apparatus that is capable of detecting the entire external pressure of a shaft-like member continuously fed at a rate of 1% with a simple structure, excluding the U point and the disadvantages mentioned above.

In the present invention, the shaft parts are arranged at regular intervals in a direction perpendicular to the sled axis, and ii+: ! ! a moving device for moving the shaft, a presence/absence detection unit that detects the presence or absence of the shaft-shaped VA5 material at a fixed position of the moving device; A line sensor that detects defects, and a processing section that determines whether the appearance of the shaft-shaped hIS material is good or not based on the output of the presence/absence detection section and the line sensor. Includes all features.

According to the present invention, visual inspection of the external shape of the shaft-shaped member, the coating state of the outer circumferential surface, etc. can be performed in a continuous feeding state and in conjunction with each other. In addition, the line sensor that detects the entire appearance can be fixed, and the entire structure can be constructed using a single VC.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to all drawings. In the figure, l is a shaft-shaped member, for example, a glass-sealed HD diode, which is held in the glass sleeve 2 by the end face of the diode pellet 3, which is the component body, and the entire slug lead 4.4, as shown in FIG. It is sealed between the inner circumferential surface of the glass sleeve 2 and the outer circumference of the slug lead 4, and all the air holes.A ring-shaped stamp 5, 5 in the form of a color hood is made on the outer circumference of the glass sleeve 2, and the model name and Polarity etc. are displayed. The diodes 1 are supported by moving devices such as chains: conveyors 6, 6e, 4, and 1M quadricycles, and are moved in a fixed amount of 1M+4. 7 is a V-shaped 4++l('t
41' A support body for arranging all of the diodes 1, with their axes perpendicular to the direction of movement ->j, 1#, 4, 8
Is there a diode L at the fixed position of the chain conveyor 6?
The presence/absence detection section detects the presence or absence, and in the illustrated example, the light guide 8a.

Each light guide 8a is arranged so as to cross the movement locus of the lead 4 of the diode 1 at the free end facing each other.

Although not shown, a light source and a light sensor are connected to one end of 8b. It is a line sensor that detects light sound from the outer peripheral surface of the sleeve 2 of the diode l in the axial direction in front of the presence/absence detection 1138, and in the illustrated example, the linear lens lo
T! The light from the diode l that passes downward through the line sensor 9 is focused. A COD image sensor is suitable as the line sensor 9, but it may also be used in the image pickup tube with Tatsutsuki polarization. Diode 1 below sensor 9
With a light source that illuminates from below, pickpocket 7) l'2aT! : It is stored in the lees 12, and the light and sound are irradiated only to the desired areas. Although not shown, a filter is provided between the light source 11 and the line sensor 9 to remove all harmful light components to the line sensor 9. 13 is line sensor 9
Is the defective diode placed on the chain conveyor 6 in front of it and selectively moving up and down? Suction Xi L extraction device,
14 is a processing unit that detects the output of the detection unit 8 and the line sensor 9, determines whether the appearance of the diode 1 is good or bad, and causes the extraction device 13 to be selected to operate 1·lε. Figure 3 shows the block diagram of the block 14. 15 is a microprocessor unit a, a central processing unit (OPU), a read-only memory (ROM) 17 in which a 67C program is written, and human output data. and a human output control device 1j (Ilo) 19 which connects a replaceable memory (RAM) to the 0PU16 for storing all intermediate processing data temporarily in +1J. Here, between the line sensor 9 and the x/019, an analog-to-digital converter 20 that converts all the analog output of the line sensor 9 into digital, a binarization processor 21 that converts all the digitized data into binary, etc. are inserted. ing.

The operation of this device is fully explained below. chain conveyor 6
As the diode L is continuously fed at regular intervals,
In localization 1h, the full output of jolt detection tγI (8) is generated. This output is manually inputted to 0PU16 via the machine, and 0PU16 becomes a waiting state for manual input from line sensor 9. This waiting time is It is determined from the feed rate of the chain conveyor 6 and the interval between the presence/absence detection unit 8 and the line sensor 9. After a certain period of time, when the diode 1 reaches below the line sensor 9, the output of the line sensor 9 becomes x/O.
l It is manually powered by the CPU 16 via 92, but the line
・If the axes of diode 1 and 9 are parallel, the fourth
As shown in the figure, since the diode 1 is moving in a direction perpendicular to its axis, the scanning direction of the line sensor 9 is the diode 1.
It is tilted with respect to the axis of diode 1, and corresponds to the moving speed of diode 1.Since several outputs from tl display only a part of diode l, these outputs are ignored and the output is obtained by completely scanning the entire outer peripheral surface. Only the output is stored in the kRAM 18, and all incomplete outputs are ignored again. This means that even if the output of "No. 1 1" is manually input, it is not immediately input to the RAM 18, but the human input is ignored for a certain period of time from the 11th output, and then several outputs from the point f) during the scan of the line sensor 9 are input to the RAM 18. M l 8 Vc storage, further V
c All outputs after that can be ignored. 11 (AMl'8
As soon as the data is completed manually, all data σJ analysis will be carried out.

That is, the line sensor 9 at the scanning position shown in FIG.
The output is as shown in FIG. 5 (Bl, that is, the glass sleeve 2U).The output decreases due to refraction at the 17i4A portion 2a, and the output also decreases slightly at the outer peripheral surface portion of the sleeve 2.

Then, the output suddenly decreased at the stamp 5 (5a, 5b) part,
The IW output decreases again at the other end 2b of the sleeve 2. Kobi)
The output is binarized and formatted as shown in Figure 5 (C1), which is stored in the RAM 18. l!1lii (Count the bit length of the data, then count the interval between each pulse b/, c/, and count the number of pulses a', b', c', d'. It is possible to determine whether the pulse interval and error are within a preset range, and to know whether the stamp is good or bad.

Similarly, the output of the line sensor 9 becomes as shown in FIG. 6 (Bl), and when it is binarized, it is shown in FIG. 6 (0). In this case, the pulse interval and pulse mk are counted in the same way. Figures 5 and 6 show all non-defective products, but if the stamp 5a is chipped or blurred as shown in Figure 7 (Al). , the output of the line sensor 9 for the scan on i shown in the figure becomes as shown in FIG. 7 (Bl), and the output shown in FIG.

In this case, the pulse interval becomes longer and the pulse b′σJ Ii
iW also becomes narrower and is determined to be defective. Also, Fig. 7 (Al
When the diode shown in FIG. 1 scans as shown in a in the figure, a pulse train as shown in FIG. That is, the long term ' of the pulse θ becomes long, indicating that the leads 4 are misaligned. Also, if there is no pellet 3, the 7th pellet
Since the pulses θ and f in the diagram CD+ are connected, it is possible to know if any of the pellets 3 are missing.

In addition to this, it is also possible to know the reversal of the marking position, that is, the state in which the diodes 1 are supported on the chain conveyor 6 at opposite intervals.

When the pass/fail judgment is made in this way, the results are stored in RAM 18. The diode l is the extractor a1.
When reaching the F side of 3, the extraction device 13 is selectively 1'lE! according to the output stored in the RAM 18. 171J
Remove only the defective diode from the chain f/bear 6.

These series of processes are performed based on the results of scanning the outer surface of the diode, which is the shaft-like part, all or several times.
All appearance data can be captured in the warehouse and quality can be determined. Furthermore, there is no need to move the shaft-like member and the line sensor in full synchronization, making the device simple.

[Brief explanation of the drawing]

114 is a perspective view showing the entire embodiment of the present invention, FIG. 2 is a partially sectional side view showing one side of the shaft member, and FIG. 3 is a block diagram showing the entire processing section of the device shown in FIG. 1). 5 is a plan view showing all the scanning states of the line sensor in which the shaft-like member tc i < 4 (AI to CB+ are the scanning states for detecting all the stamping states = T4 +, and (A) is the shaft-like ■ S (B) is the output waveform diagram of the line sensor, (C1 is 2
The entire digitized output waveform diagram is shown. Also, Fig. 6 (Al to (
0) shows the scanning state for detecting all the external conditions (Al is a plan view of the shaft-like member, (B) is an output waveform diagram of the line sensor, and IO+ is an output waveform diagram converted to 211). Furthermore, FIGS. 7A to 7D show scanning states for shaft-like members with poor markings and poor appearance; , (01 is a z-valued output waveform diagram,
(Dl indicates the binarized output waveform open sound for appearance defects, respectively. 1... Axial glS ratio, 6. Moving device, 8... Presence/absence detection section, 9... Line sensor, 14...Processing section. 弗]Figure 4, Figure 2]

Claims (1)

[Claims] Shaft-shaped part hitting sound is detected by a moving device that arranges and moves at regular intervals in a direction perpendicular to the axis, a presence/absence detection section that detects the presence or absence of the shaft-shaped member at a fixed position of the moving device, and an presence/absence detection section. a line sensor that detects the principal from the outer peripheral surface along the axial direction of the shaft-like member, a processing unit that determines the appearance σ of the shaft-like member based on the output of the presence/absence detection unit and the line sensor; An appearance inspection device for a shaft-shaped member, which has all the following features: