JPS5870110A - Device for inspecting state of arrangement of reed - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for detecting the alignment of leads on an object, and more particularly to an electro-optical device for detecting lead spacing on an object.

Product quality control is of paramount importance to both manufacturers and end users. This quality control is carried out at an intermediate stage of manufacturing or assembly of the product, and the final quality control is
These quality controls are carried out on finished products and various control techniques are adopted depending on the different products being produced. It can be generally called. One of the most obvious features of such products is what is known as an integrated circuit package made by a semiconductor company.In this example, the package has multiple leads extending from the package body on both sides. The leads on each side of the completed package must line up in a nearly straight line or in alignment with each other; otherwise, defects such as lead misalignment will cause the ends of this package to Electrical power supplies may experience mechanical failure early in use.

Despite strict quality control when assembling packages, a considerable number of finished packages have one or more than one package that is not aligned properly.For example, one or more leads are bent towards each other along the inside parallel to the long axis of the package;
Some curves may be curved apart from each other along lines perpendicular to the parallel lines, or may have a combination of curve components along parallel lines and orthogonal lines. Therefore, it is necessary to test all completed packages and exclude packages with bent leads.

Furthermore, many types of packages may include a pace and a cover for the pace, supporting the leads between the cover and the pace. This quality control also involves producing finished packages in which the cover is approximately, if not precisely, aligned with the thin edges on the pacing. However, a drawback is that in many completed packages, the edge of the cover is substantially offset from the edge of the pace. This is why packages with this shift or offset must be excluded.An object of the present invention is to provide a new quality control device.

Another object of the present invention is to provide an apparatus for inspecting manufactured products for defects.

Still another object of the present invention is to provide a quality control system that can accurately and cost-effectively inspect products for defects even when the production speed of an assembly line is high.

According to the gist of the present invention, in order to achieve these objectives,
"Bending along a first line extending from an axial object and parallel to the axis, or bending along a second line perpendicular to the first line, or a bending component along the first line and a bending component along the second twin." a first light beam for producing a first light beam that passes through a first light path along said second line and intersects said lead in an apparatus for inspecting the alignment of at least one lead having a combination of bends; generating means, first detection means for detecting the first light beam, generating a second light beam that passes through a second optical path forming an angle with the first line and the second line and intersects the lead; and a second detection means for detecting the second light beam. The optical data obtained by the first detection means has T1 information representing the bending of the lead along the first line.

The optical data obtained by the second light beam generating means and the second detecting means has second information representative of the combined bending along the first line and the second line of the lead. By subtracting the first information about the bend along the parallel line from the second information about the combined bend, information about the bend component along the second line can be obtained.

In another aspect of the invention, an apparatus for inspecting the alignment of a plurality of leads spaced apart from each other on an object includes an optical means for generating data having information on the spacing between the leads; and data processor means for determining the spacing between said leads. The results obtained with this other feature are that the leads are curved or straight.

wits is a product 10 that is an object at a given stage of production.
It is a figure showing an example tube. This product 109 includes an imaginary body 1 tube, and this body has a front end/da, a rear end/4, a left side/I, and a right side. JJ-/ for multiple leads each
, JJ-J, . Fuck that J
ag-/, Kodar, . . . J- A plurality of reed bars, represented by turtles, extend from the right side 3 of the main body.

The main body/J has a hemisphere and a cover 3, and supports the reed and J part between this part and the cover 3.

This product 10 can be thought of as having a virtual vertical axis Y and a virtual horizontal axis X orthogonal thereto for coordinate reference, which will become clear from the description to be given later. - As an example, this product 1
0 as an n-lead in the semiconductor industry.

It may be a finished product known as a dual-in-line integrated circuit II (IC) package.

Chapter-Il! l is a high-quality finished product 10 shown as a solid line, and its leads u-/yJ, l-B and Jl-/'
~j4t-1 The turtles are lined up. That is, these leads extend parallel to each other when viewed from the side shown in the figure. If one or more of these leads J, 2-/NQ3-fi or leads 49-/~-- are bent substantially from a parallel position along an imaginary line 11 parallel to an imaginary longitudinal axis Y. In this case, the quality of the product 10 cannot be said to be satisfactory. This state is shown as an example for a lead line. In this case, this lead is line! 1 as shown by the broken line, or
It may also be bent forward as shown by the dashed line. This type of bend along the parallel line 11 is referred to as a "parallel bend." Lead 1/,...
・--When all n are aligned, these leads are separated from each other by a predetermined distance of 111dl, but if there are bent leads or leads such as L2-da, the MFM will not be at the predetermined distance and will be in contact with II. Approaching or moving away from the lead by more than a predetermined distance. It is necessary to exclude packages 10 whose lead-to-lead distance JliJ exceeds a predetermined permissible range.

Happy J! I! This is a diagram showing, in solid lines, a high-quality finished product 10 in which the leads JJ-/~Koko Kame and Reed Kodar I~--l are arranged in a slanted and parallel manner as can be seen from this end view. . If one or more leads 1-tNu- or leads 7~-- turtle are on line 11
Any virtual twin j perpendicular to and parallel to the virtual horizontal axis
3, the quality of the product 100 is not satisfactory. Such a state is shown as an example of a lead, and in this case, this type of bending in the direction of the lead is referred to as a "curved bend j". If so, this package 1
0 cannot meet quality control specifications.

We will now discuss the first type of bend, which is referred to as the ``next km rlll1-b-se bend''. This “combination song”
The lead has both "parallel bending" and "upward bending" components.

Figure 3 shows these three types of bends. Lead J, t-1 is a "parallel-shaped" lead with a distance am shorter than the predetermined distance, and Lead Eco is a "parallel-shaped" lead with a distance am shorter than the predetermined distance. The lead has an "upward curve" with a distance d2 larger than the distance, and the lead rating -3 is the "parallel -" lead of the rejection d1.
Since it has a "curved" component and an "upward curved" component of distance dfi, it is a "combined curved" lead.

FIG. 5 is a diagram illustrating another defect that may be associated with the finished product 10. In the case of high-quality products IO, the coverco S is approximately edge-to-edge aligned on the pacem, even if not precisely. In the defective product 10 shown in FIG. 3, the cover core is offset from the base by a distance d3.

FIG. 4 and FIG. 7 are diagrams showing the optical system 30 for generating data with information for detecting the alignment state of one or more leads n or lead coda, especially the presence or absence of "parallel bending". It is. The relative movement between the optical system J0 and the product 10 is indicated by an arrow. This optical system has three light sources on the right side of the toItsg product 10, and this light source generates a light beam that passes through an optical path along the direction 3, which is perpendicular to the line j1, as shown in Figure 4. do. The light beam that has passed through the optical path J1 from this light source jJ is sent to the left side 1g? 3
4 to detect. As shown in the figure, the light source J is positioned slightly higher than the product 10, and the optical path J41 is tilted gently so that the optical path intersects only with the lead and does not intersect with the lead. do. In this case, the optical path S is still raised, but the line 11 and the line 11 are also perpendicular to each other. ◎ Therefore, as will be described later, sensor J6 produces output data that has information on the "parallelism" of only the lead edge. The reason is to prevent the optical path evaluation from intersecting with the lead evaluation so that it cannot be prevented. If the package 10 does not have a reed, there is no need to lift the light source and therefore the optical path as shown in FIG.

In any case, the optical path evaluation is along line 1g and line 1.
If it extends perpendicularly to , then T will appear.

If the product 10 has only lead n and no lead damage, optical system 30 should include only light source J and sensor 36 for "parallelism" inspection! good.

In the case where the optical system JO also has a lead beam, as shown in FIG. Include it in the left side lf. Seven octopuses are installed on the right side to detect the light beam that passes through the optical path from the light source 31. As is clear from Figure 7, for the same reason as in the case of the light source J, the position level of the light source Jf is raised relative to the product 10, and the light beam passing through the optical path is extending from the right side of the lead J.
4' so that it intersects only. Therefore, it is clear that the sensor 4t produces only output data having information on the "parallelism" of this reader.

If the lead n and Koda of the product 10 have only "parallelism", the light sources JJ, JK and the sensor j6,
4! Only this is necessary for quality control, that is, quality control. However, as already explained, these leads JJ, J
Since the data is based on "upward bending" and "combined bending," an optical component that provides data having information on "combined downward bending" is added to this optical system 30, and from this, " It is possible to output information on "upward and downward curves".

Sometimes, as shown in Figure 6 and Figure 6,
In addition to the optical components shown in the figure, the optical system JO includes a light source condition that produces a light beam passing through the optical path on the right side of the product 10, and a light source condition on the right side of the product 10.
/1 is provided with a sensor q for detecting the light of this optical path detector 4. As can be seen from the figure, the optical path 4 forms an angle with respect to the line j1 or "parallelism" and the line l! There is also a certain angle with respect to T, that is, ``upward bending.'' For example, ε can be set to the optimum value of each angle. As you can see from the diagram, the light I
! The Japanese product 10 is raised slightly so that the optical path 6 intersects only the lead extending from the left side 1g. In this way, as described below, the sen? 4# provides output data having information on the "combined bend" of the lead.

Product 10 also has a lead code, so the left side/1
is provided with a light source 30 producing a light beam passing through an optical path 3-;
On the right side, a sensor is provided to detect the light beams in the five optical paths. As is clear from FIG. 1, the optical path is "parallel", that is, makes an angle with line j1, and is "upwardly curved", that is, makes an angle with line I2. As shown in FIG. 9, the position of the light source 30 is slightly raised relative to the product 10, so that the light path 32 extends from the right side and intersects only with the door J.
For the same reason as before, light source! Raise the 0 position slightly.

In accordance with the principles of the present invention, a variety of optical techniques may be used to determine data for inspecting the alignment of leads or leads, and in particular for detecting gap distances between leads. The optical system JO is one example of this, and was based in part on the need to optically inspect only a small region, or point, of each lead to obtain sufficient data for these purposes. be. This embodiment is an example shown in FIG. A, jA is lead u,, 2F
and each minute point' * e P Tomi PS e
They intersect at P4.

Lead J with points Pi-P4 lined up, 2. J
The distance from the upper end to the lower end of l is preferably approximately '/g to l/da. Lenote, which examines only such points Pl-P4, each party fi, 7.2. Jt, 4L4! ,
! Owo, M i jf can be a point light source that generates infrared light,
34, 44 sensors each.

Note that a single photodetector such as a phototransistor that detects this infrared light can be used.

Although not shown, in other embodiments of the optical system, each point light i[JJ
, Ig, 4I4I, instead of using shun, for example,
It is also possible to use an optical iI tube that can control the light to intersect the entire area, and a linear 7-otodiode array can be used instead of each photodetector. Such a light source can be a laser. Since product io can be moved relative to this other optical system, the linear photodiode array can output corresponding data across each lead.

In another embodiment of the optical system, the product 10 is fixed and the 1
The optical system may include a light source that illuminates the entire row of leads, such as a lead. In this optical system, the sensor may be a TV camera that electronically scans the "image" of all leads.

It should be noted that in all the optical systems mentioned above,
Obtain optical data for at least the PI-P4 point of each lead. One advantage of obtaining optical data for only points pl-p4 for each lead is that the amount of electronically processed data can be minimized, as will be discussed later.

Additionally, infrared point sources and single phototransistors are less expensive than detectors such as lasers, linear photodiode arrays, and TV cameras.

The 10th @ is TIIm showing an example of the positional relationship in which the optical components of the optical system J0 described so far are combined.

In order to detect the lead alignment state, an optical path 3 is further added to the optical system 30 and crosses only and intersects the main body/J.
A light source that produces a beam of light passing through t! 4, a sensor 60 for detecting the light beam passing through this optical path jt, and a tube are provided.Furthermore, another light m4 for generating a light beam that crosses the main body 12 and intersects this, and this light beam As is clear from the seven detection points A& and E, this light path is 16J, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, and 16. − is in front of, or in front of, the optical path of these lights,
, N, is behind or behind -.

Light i1 jA and - at a predetermined distance ■D For example, z, tyt C
1l (=j inches), and detect the moment when the front jlI-1- crosses the optical path U1 by 10 tu, +4. As will be described later, using the output data of the sensors 40 and 44, By considering the average speed of the product 10, the distance of each lead door and screen relative to a reference point, ie, the front end, is determined.

@ti g shows an independent and complete module 4t for the optical system Jo. This module U has a housing 0 and a cable connector 0, and the mounting has a channel that allows the product 10 to be moved in the direction of the arrow.
As shown in Figures ll//II and 1J, on the left side 7 of the channel of this housing, a circuit board, for example a printed wiring board, is attached to a bin for fixing it.
Fix them to the upper and lower brackets T through J, respectively.
Attachment: A glass plate S4 is provided extending above the printed wiring board. A similar component is provided on the right side 6' of the channel 7 of the housing 70 (
(not shown).

Figure 73 shows the optical system J integrated into the printed wiring board.
A portion of O is shown. The imaginary line shows the state in which the product IO moves along the channel in the direction of the arrow. As shown in FIG. 66 in sequence. On the right side of the channel goo on this board is a light source like the one shown in Figure 10, not shown! 6. It has a light source J, a sensor octopus, a light source up, a sensor leg, and four light sources in this order.

In FIG. 73, a further row of sensors 11 is provided below the sensor V. Using a combination of the sensor U aligned with the cover and the sensor it aligned with the base lagoon,
Data related to offsets as shown in diagram J is extracted. Although not shown, a further row of light sources and optical paths are provided immediately below the light source j and the optical path 3t shown in FIG. As shown in FIG. 13, the capacitor is offset from the base 4, so that when the product IO passes through the module 6, the time when the cover crosses the optical path 21 shown in FIG. ! This is different from the time when the light path (not shown) is crossed directly below I.
Therefore, the output data from one of 1 sen vu and it is delayed with respect to the output data from the other, and this delay time represents the amount of offset.

The spacing or distance between the side ribs 6 and the combs that respectively hold the wiring boards will vary from module to module. This space depends on the width of a given package io. The reason for this is to ensure that each optical path exchanges heat with the same point pi-p4 of the lead, regardless of the convergence of the package. As the radius of the package becomes wider, the space width also becomes wider. By varying the width of this space for the modules, the same printed wiring board can be used for all modules.

FIG. 741 is a diagram showing the electron optical system 90 for detecting the inner spacing of the lead n and lead coda of the product 10 and the alignment of these leads. This system will be explained using the optical system 30, but data for detecting this inner distance can be obtained using the other optical systems mentioned above.

As shown in the diagram, the electron optical system 90 includes three light sources,
Jl, Qll, 10. ! & , A number of light source data corresponding to the lower light source of light source j6 (not shown), and optical path 3II, rabbit, 41A, j, and s.
at, review and light path! a number of optical paths 91I corresponding to the unillustrated optical paths below the sensor 34 . l
I.J.

It includes seven sensors 96 corresponding to 41f, 14', u, 44, and It, respectively. The output data of the sensor device 6 is generated as pulse waveform signals on each of the seven output lines 1g, and the limit values of these pulse waveform signals are detected by the respective limit value detectors 10o. When each pulse waveform signal appearing on the output line 11 exceeds the limit value added to the limit value detector /#, it produces seven rectangular pulse waveform signals as shown in FIG. 1j.

The pulse waveform signal w6o shown in 11/jll is
Corresponds to the output data from. The pulse waveform signal Wll corresponds to the output data of the cent U, and W3 corresponds to the output data of the sensor J4.
Corresponding to the output data from w4! corresponds to the output data from the sensor, w4$ corresponds to the output data from the sensor, WS2 corresponds to the output data from the sensor leg, W
6 corresponds to the output data from the sensor 46. All the pulse waveform beams shown in the mystery in the 1st jWIl-
The dashed line in Figure 0, which represents a product 10 in which the do n and - da are aligned and the cover and base lines are precisely aligned, is to illustrate the lead edge, the curve of the house, and the offset between the cover line and the base line. It is a circle of

The leading edge E1 of the signal W.0 occurs when the front end /41 of the capacitor crosses and interrupts the optical path at. For the front edge El of the overlapping signal W axis, the front end 71+ of the base lagoon is the optical path! This occurs when cutting across the optical path below t. A leading edge E2 of the signal WaS shown by a broken line with respect to the front line El is information indicating that the cover X is offset from the easy pace. The aligned leading edges E1 and 'E2 shown by solid lines are information indicating that the cover 3 and the base roller are not offset. The leading edge E3 of the signal W66 occurs when the leading edge /+ crosses the optical path. As discussed below, the time interval between the occurrence of leading edges E1 and El is used to detect the velocity or velocity of product 10 through optical system 30. Unless otherwise specified, the product 10 is assumed to be moving at a constant speed. Since the leading edge E1 corresponds to the leading edge /4, this leading edge is used as a reference to detect the inner distance between the leads 2 and 1.

The signal Ws6 has leading edges 1 to 1 corresponding to the leads 2.1-/NJJ-, respectively. This occurs when crossing the road and blocking it, and these leading edges・1～・
, are equal in time distance from each other, which provides information that no "parallel bending" has occurred in any of the one or more leads. As shown by the broken line in the figure, when the leading edge 4' corresponding to the lead kneader approaches the leading edge @3, information is given that the lead kneader is creating a "parallel surface bend" in the front.

◎This signal W4 has a plurality of leading edges 1 to 1 corresponding to the 111W4 lazy evaluation and 7N evaluation.
! Each leading edge of 1 to 1 occurs when a respective leader intersects and interrupts the optical path. Since these leading edges @l'''@yu are equally spaced from each other, they give information that no "parallel edges" have occurred in any of the lead houses.

Further, the signal W411 has a plurality of leading edges 1 to 1 corresponding to the leads 1 to 1. Each of these leading edges・1～・1 is the respective lead n−/～n−n
occurs when the beam crosses the optical path 6. These leading edges l-@3
are equally spaced from each other, giving information that "combination 11IN" has not occurred.

Since the leading edge e4 shown by the broken line in this waveform signal is close to the leading edge 3, it provides information that the lead n-tei may be "combiningly curved". As mentioned above, has a certain angle, so information on the "combined curve" alone cannot represent the amount and component of the "parallel curve" and the amount and component of the "upward curve." However, information about the "flat, curved" component can be obtained from the distance between the leading edges .; and .3 of the signal Ws@. By subtracting this "parallel surface curve" component from the distance between the leading edge 4 and -3 of this signal w4B, the "upward curve" component can be detected. The difference is 0
If , only "parallel edge" exists. When the difference in diameter is a number larger than 0, there is a component of "upward curvature" corresponding to this number.

As another example, the signal W3@ corresponds to leading edge 4 indicated by a solid line and indicates that there is no "parallel surface bending" to the lead kneader, and the leading edge indicated by a broken line of signal W4fi indicates "combined bending". If it shows that there is, then the above subtraction shows that there is only "upward bending".

The signal w54 has a plurality of leading edges 1x@ corresponding to each of the leads 2$-/ to l-n. Each leading edge of this tWsa, 1~, is each lead J.
Ill-1-M- occurs when a ring crosses and blocks three optical paths. Since these leading edges 1 to 1 are equally spaced, they provide information that there is no combinatorial bending in the lard.

The electro-optical system D0 includes a data tab set generally indicated by 10. The digital signal pre-producer 9S/W passes through 7 lines 104 and is a pulse waveform signal Wso.
* Was # Wss e Wu e W4s e
Receive Wsa and W@4 and combine them to create 5 lines l
Five output pulse waveform signals W1 to Wi as shown in @/4gl are extracted from Or on T.

The signal W1 is a combined waveform signal with the signal W@g k Wb, and when this waveform signal WS has no pulses at all as shown by the solid line, the leading edge E1 of the signal W@O and the signal W - This shows that the front edge 1c2 of No. 8 coincides with the front edge 1c2 of No. 8, thus indicating that the cover X and the pace sheet are accurately aligned.

If this is not the case, a pulse P occurs as shown by the dashed line, one edge of which corresponds, for example, to the leading edge E1, and the other edge, for example, to the leading edge E! Corresponding to this, it shows that there is an offset between the cover and the base. Signals W and l are a combination of signals W6o and W3g, but they are delayed. The reference sign of this signal W2 represents the leading edge of the signal W.Oe W3g. Other signals WB,
The same applies to W4, Ws, and Ws. Signal W3 is a combination of signals WsQ and w42. Further, signal W4 is a combination of signals W@Q and w4B, and W! I is a combination of W@0 and Ws4 or W@
Who?

It is a combination of W.6. These 6II signals W1 to W
m is generated by performing logical operations on various logic gates (not shown) of the hub rib processor IC.

The datab processor 10- has six retriggerable timers/IO, each receiving one of the signals wlNw@. These ties "qr tto common lick //
The clock is controlled by - Taking signal W2 as an example, if leading edge E1 occurs T, 1 timer/10
One of the four pulses starts counting from the count value of zero. Since each leading edge ・l～・, occurs, one timer/10 calculates the number of 14 bits corresponding to the cumulative time when the leading edge ・1～・, corresponding to the previous 11]cx occurs. Then, assuming that the speed of the product 10 is known as described below, this timing information given by each 76-bit number is expressed as the distance between the leading edge 1 to 1 and the leading edge E1, or in other words, The data is converted into data representing the leap distance between the corresponding edge and the reference front end/edge. these/
The difference in the 4 bit quantities is the inner spacing between leads n. The other timer/10 also responds to the signal and produces a similar 76 bit number. If the signal w1 does not have a pulse as shown by the solid line, the 74-bit number equal to 0 is the timer/1
0, and it shows that there is no offset between the capaco and the base song T or the signal W! If there is a pulse P in , 16 bits corresponding to the width of this pulse P)
A number of 76 bits from timer/10 is output to each of the 64 lines. //6 and the arithmetic puta//1 process the 16-bit data received by the line //41 under the control of the software described below. From this data calculate the inner distance between the lead n and the comment. If it is found that one or more leads are subject to "parallel bending" or "upward bending" exceeding the predetermined tolerance stored in memory, this product 10 shall be removed. A control signal representing the decision to exclude is generated on the output line.

If this is not the case, it is determined that all the leads of the product 10 are aligned, and this is displayed.
Occurs in X. The signal W1 is also
A similar determination can be made in response to.

Figure 1 is a diagram showing an automatic package handling device that can be used with the self-contained module 41, which device/JJ
It may be one of several models such as the model '1'-XTO~XXO manufactured by the Trlgon Indwstrles company of Force 07, Ornia, USA, but the Mosier at
modified slightly to accommodate %I). This rosewood handling device 11 has a processing gutter-like part/channel/M
[-1ii control le-/l//:u and hif-A/
It has a center holding part (ISO) which is movably mounted above the plaque (3411). Mosier 41 so that channel Quco is aligned with channel tX
1 is supported on the gutter/screen. The flexible output device has three fixed channels, 7 and 4, 1411, which are aligned with the channels according to the rotational position of the sorting mechanism.

The package handling device l- is a gravity applying device, @tt
The package 10, which is tilted at an angle of 0 with respect to the horizontal direction as shown in yt1, is sent to the channel tX with its lead-0 side facing upward and the center holding part tSO on top of the capacitor. Afterwards, the package passes through the module U by gravity and falls into the sorting mechanism/36 channels/rabbit.Next, the electron optical system! Based on the judgment made by 0, the sorting mechanism/JA is rotated to select one channel,
/4'4, package 10 in one of /da t
send out. The package handling device/JJ has a system, not shown, called a "ngmlator" (JJ), by means of which a plurality of packages 10 can be delivered or held in the upper part of the channel, but only once. At a time, only one package 10 may be available for processing through module 61. This processing will be described below with reference to FIG.

FIG. 11 is a diagram showing the package /θ in channel lJl. The part indicated by ljo of rail/J4 is molded so that it can follow the contour of any particular base. This shape prevents the package IO from vibrating in the direction shown by the arrow as it is fed through the module 6t, thereby reducing noise in the optical data. FIG. X is a diagram showing in detail the relationship between the module 4t and the rail l roller.

1 to calculate the inner spacing between "Lead" or "Dokoda"
The timing data shown in FIG. 16 from the timer/10 is collected by the microphone processor 16.

The timing data is then linearized for acceleration effects as the product 10 free falls through the optical system 30, for reasons explained below, and then converted to distance values according to the following equation:

xmsII+Dingstrsg(Vm-A(Tm-Team
)) (1) Here, #■ The inclination angle g shown in FIG. Reference distance 7 m wm - Time V, represented by pulse P1 of waveform signal W6, for the product 10, e.g. front end 14I, to fall the reference distance xl! Average speed tllll of the product 10 - T shown in FIG. Incremental time (elapsed time) x 3N
The distance of each lead from the front end /l determined from the elapsed time t3 In the case of a free fall due to general gravity, the distance of each lead from the front end /l determined from the elapsed time t3 is determined for each time event shown in Fig. 14 according to the procedure shown in the flowchart of Fig. 1/. Solve equation (1). First, the constant M is calculated by the process shown in the beginning of the program. Next, the average speed is calculated by the process shown in the block l evaluation, and then the block/S
The register holding time TIIUM is set to 0 in the process shown in 4.

Next, time t is reached by processing indicated by block m.

is stored or saved □ by the process shown in block /40 in addition to the time 〒8υM. If there is no data according to the judgment indicated by block 7, that is,
All leads are optical z so? If it has passed through i-, the program flows out. Otherwise,
A processing loop is formed through line /4& to calculate and store X for another lead.

Once the count and memory of Determine whether an abbreviation exists/Subordinate/Example G? - In order to detect whether there is a "parallel bend" of the lead edge that exceeds a predetermined tolerance, the distance X11 for one lead edge can be subtracted from the distance xIl for the adjacent lead edge. In that case, the distance between these X and W is calculated from the signal W. In that case, as described above, the difference obtained can be compared with predetermined data representing stored tolerance ranges.

First? As shown in FIGS. 3 to 3, the light passes through the optical system 30, particularly the 7 joule At, and falls due to gravity. Therefore, due to the action of gravity, the product 10 is subjected to constant acceleration, so that the rear end 14
The velocity of the nearby leads will be faster than the velocity of the leads near the leading edge l#. In this case, it goes without saying that the intervals between the leads are the same. Therefore, it is a good idea to take this acceleration into account and linearize the data using software.

Furthermore, the principles of the present invention also apply when the angle 0 is taken as 0, e.g. when the product 10 is moved through the module 6t at a known constant speed on a conveyor belt rather than by a package handling device/JJ. Can be applied.

With this h valley and m=O, the equation (1)' becomes simple, and it is possible to store in advance a known constant speed ≠ - time in the memory.

In addition, although we have explained the digital signal preprocessor ml, the signals W1 to W5 in Figure 1, and the algorithm in Figure 11, the waveform signal shown in Figure 7J is necessary to detect the inner spacing of lead n and wire. Contains all data. Accordingly, other preprocessors and other algorithms may be used to determine these distances.

Referring again to Figures 1 to 3, especially Figures mn, and furthermore, the "Singerator" of the package handling device No.
, a procedure for processing and storing a large number of products, for example to, ooo / time product, will be described.

- As an example, the center channel 14t4 of the output device
Make sure to receive quality products through side channels/
R allows you to receive poor quality repairable products, and 7 side channels allow you to receive 10 bad products that cannot be repaired.

Typically, a plurality of products are fed into channel 1 and held in place by a solenoid deactivation means on a "singulator" near the top of channel 1. Gong, is this the first means of stopping? The first one with 0 indicated by /41 in the figure? 170 in figure
Another solenoid deactivation means is provided in the lower part as shown in . Immediately before this stopping means 141 releases the next product 10f, the previous product 10 passes through the module 41 and falls due to gravity and stops at the stopping means /'10. When the previous product 10 is of good quality, the ``selecting mechanism/34 selects it8!'' ! The product is held in the position shown in I and is sent to channel lda 6 ◎Therefore, this product is released towards channel /4I4 by the stop means ito when the next product 10 is Moginy 1t. It may be simultaneously released from the stopping means/At for processing. This is because it does not take time to move the sorting mechanism from the central position. If the quality of the previous product is not good, the stopping means /41 is used to release the next product.
The procedure described above is shown in more detail in the S-diagram, in which the time for anticipating the pick-up of the next product and returning it to the center position should be introduced. Multiple rows of till 10
to channel/Jl and block l? It is assumed that the next product in the product line is held by the stop means/Ag by the process indicated by -, and the previous product has been processed by the module 4t.

This next product is in a waiting state to be "singulated" by the process shown in block/71.Stopping means 110
If the previous product in the block is found to be of good quality as determined by block Noah 6, the next product is released by the stop means/'10 (block 11g) and the previous product is sorted out (block two). If the previous product is determined to be of poor quality by the judgment of block/94 and if the previous product is repairable or not repairable by the judgment of block/ne, the sorting mechanism/8 is blocked.
The process shown in block t# moves the right channel 14#8, or the process shown in block /14 moves it to the left channel /4I4I, and then the process shown in block ltI returns it to the center position. Then block/l of the next product.

It is released from the stop means /At and sent to the module U by the process shown in block /9-, the data is obtained by the process shown by block 19-, the lead interval is calculated by the process shown by block 19, and then the lead interval is calculated by the process shown by block /9&. In the process, these calculated distances are compared with stored tolerance ranges. The program then repeats through line /91,
Another product stopping means t4t is used to ``rate'' the clams shown in block /'/44.

It is clear that the invention is not limited only to the embodiments described above, but that many modifications and variations can be made within the scope of the invention.

[Brief explanation of the drawing]

Happy/wJ is a perspective view showing an example of a completed package, 11a
lllti A side view taken along the 11th line of the 1st W, the JW is the -l! l's J-,? end view along the line;
1III is a top view showing the completed package of 1II, *zWJ is a side view similar to the first figure showing another example of the completed package, and aH is a part of the optical system of the present invention together with the package shown in 1wJ. Is the circuit diagram of m5iy% s4g? -7 line, FIG. S is a schematic top view showing other parts of the optical system of the present invention together with the package shown in FIG. 1, and FIG. , Fig. 7θ is a top view showing the entire optical system of the present invention together with the package shown in Fig. 1, Fig. 1/Fig. is a perspective view showing a completely independent module of the invention, and Fig. l
A sectional view taken along line -17-, Figure 1J is a sectional view taken along /, 7-t3@ of Figure 7-,
FIG. 741 is a block diagram showing the electron optical system of the present invention;
Fig. 1j is a diagram showing seven pulse waveforms used in explaining the present invention, Fig. 14 is a diagram showing three pulse waveforms used in explaining the present invention, and Fig. 1 is a diagram showing three pulse waveforms used in explaining the present invention. 11 is a top view showing the package holder of 1. /1- /1 of the figure
End view along the line, Fig. 79 is /9- /9 of Fig. 77
A cross-sectional view taken along @, Figure 3 is J in Figure 1.
- A front view showing the package holder of the part surrounded by line 1, the first figure is a flowchart for explaining the algorithm of the present invention, and the first figure is another figure for explaining other algorithms of the present invention. This is a flowchart. 10...Product (or package), 12...Object, lda...front end, /4...rear end, n...left side, X...right side, JJ, JJ -/~u-n, 7. JF-/ ~20-n
...lead, song...base, 1...cover, X...optical system, 12, JJ, country, #, j4. ≦ko, 92... light source (or light beam generating means or light source means), review, #, wabi,! Ko, cup! ＃・・・Optical path, Mu, U,
fl, j4E, 40, 44, It,
94...Senna (or detection means), 41...Module, 70...Housing, 7J, /Jt, /cup, /$4, 14It・
・・Channel, terminal...cable connector, 74...left side part, 71'...right side part, 71...circuit board (or printed wiring board), to...
... Hole, I co... Bin, 141... Bracket, t6... Glass plate, DeO... Electron optical system, Det... Output line, 100... Limit value detector, 10 pieces...Data processor, l Misaki...Preprocessor, /DA, /at, I/DA...Line, Ilo...
...Timer, /ll control, //A...micro processor, //1...arithmetic processor, l...output line, /JJ...automatic package handling device, /All...
Gutter-like part, /24, 13g...rail, /JD...holding part, i, y-co...bracket, /mi...arm, IJ&...selection mechanism, /4I-co... Flexible output device, 14g, /90...stopping means. Patent ratio Applicant: China → Psi No change to the content of 171 of the incorporated drawings] -71- C-based procedural amendment (method) Showa St./January 2, Director General of the Japan Patent Office Kazuo Wakasugi, 1 , Incident display series WsS Riichi/J-tei? tJ No. 2'' 1 Name 9-F Alignment Condition Inspection Device 3, Person making the amendment Relationship to the case qIIWIf Applicant Sinarsepsi Corp. 7, Contents of the amendment (1)
Selection of attached paper

Claims (1)

[Claims] /) In an apparatus extending from an axial object and inspecting a bend along a first line parallel to the axis, a bend along a second line orthogonal to the second line, or the alignment state. : 1) a first light beam generating means for generating a first light beam that passes through a first optical path along the second line and intersects the lead; b) a first detection unit for detecting the second light beam. C) second light beam generating means for generating a second light beam to intersect the lead through a second light path forming an angle with the first line and the second degree fin; and ) A lead alignment state inspection device comprising a second detection means for detecting the second light beam. -) Apparatus according to claim H7, characterized in that said second light beam generating means comprises a first light source. J) A device according to claim 11J, characterized in that said second light beam generating means comprises a second light source. 1) The apparatus according to claim HJ, wherein the first and second detection means each include a photodetector. The apparatus according to claim 1, wherein the angle is set to 411j' with respect to the -th and second lines as an optimum condition. 4) A plurality of first and second leads extend from a shafted object, and the first lead is located on a first side of the object, and the second lead is located on a second side of the object. and has a bend along a first line parallel to the axis, a bend along a second line perpendicular to the second line, or a combination of a bend component along the first line and a bend component along the second line. In an apparatus for inspecting the alignment of one or more first and second leads: a) producing a first light beam that follows a first optical path along the second line and intersects only the first lead; a first light beam generating means; b) a first detection means for detecting the first light beam; e) a second light beam that travels along a second optical path along the second line and intersects only the second lead; a second light beam generating means for generating a beam; d) a second detection means for detecting the second light beam; third light beam generating means for generating a third light beam that intersects only one lead; t) third detection means for detecting the third light beam; g) the third and second lines. a fourth beam generating means for producing a fourth beam of light which travels along an angled fourth beam and intersects only the second lead; and h) a fourth beam generating means for detecting the fourth beam of light; A lead alignment state inspection system characterized by detecting all detection means. (i) the object has a front end; and a) the object is configured to travel along a fifth optical path that is in front of the first to fourth optical paths and that extends in a direction across the front end and can intersect with the front end. b) fifth detection means for detecting the fifth light beam; C) the fifth light path behind the first to fourth light paths; a sixth light beam generating means for producing a sixth light beam traveling along a sixth light path that is located at a predetermined distance from the front end and extends in a direction across the front end of @1 and can intersect therewith; and d ) The apparatus according to claim N4, characterized in that it comprises a first detection means for detecting the IIffE11 large light beam as the analyzing beam. t) the object has a cover and a base, the first lead and the second lead are supported on the base between the base and the cover, and the base and cover are aligned with relative offset; a) a fifth light beam generating means for producing a fifth light beam traveling in a fifth light path extending in a direction transverse to said cover and intersecting therewith; b) said fifth light beam; fifth detection means for detecting the beam; @) sixth light beam generating means for producing a sixth light beam traveling along a sixth light path extending transversely to and intersecting said base; and d) The device according to claim H4, characterized in that it comprises a sixth detection means for detecting the sixth light beam. 9) A plurality of first and second leads are born from an axial object, the first lead is located on a first side of the object, and the second lead is located on a second side of the object, One or more lines having a bend along a first line parallel to the axis, a bend along a second line perpendicular to the second line, or a combination of a bend component along the first line and a bend component along the second line. In a self-contained module for testing the alignment of first and second leads of: a) a first side defining a channel through which said object can move and a second side spaced from said second side; b) a first and second circuit board having optical means for generating lead alignment data; C) a housing for supporting the first circuit board on the first side of the housing; a first support means; and d) a second support means for supporting the second circuit board on the second side of the housing. 10) The first and second circuit boards each include a plurality of alignment holes, and the first and second support means each include a plurality of alignment pins for receiving the alignment holes. Independent complete module described in WI9. //) 2 the first circuit board supported by the first support means on a first side of the housing; and the second circuit board supported by the second support means on a second side of the housing. Claims characterized in that the distance between the circuit board and the object is determined in advance according to the size of the object! Independent complete module as described. l) the optical means generates lead alignment data; and further includes: a) a first light beam supported by the second circuit board that travels along a first light path along the second line and intersects only the first lead; 11) first detection means supported by the first circuit board and for detecting the first light beam; .) first detection means supported by the first circuit board and connected to the second line; a second light beam generating means for generating a second light beam that travels along a second optical path and intersects only the second lead; -) supported by the second circuit board and detecting the second light beam; a second detection means for;・) a third light beam supported by the second circuit board, traveling along a third optical path forming a certain angle with the first and second lines, and intersecting only the first lead; a third light beam generating means for producing a beam; f) a third detector stage supported by said first circuit board and for detecting said first light beam; g) supported by said first circuit means; a fourth light beam generating means for generating a fourth light beam that travels along a fourth light path forming an angle with the first and second twin leads and intersects only the second lead; and h) the second circuit. an independent complete module (O/J) characterized in that the object has a front end and further comprises fourth detection means for detecting the fourth light beam supported by means;
One means includes a) a fifth light beam for producing a fifth light beam that is located in front of the first to fourth light paths and extends in a direction transverse to the front end thereof and travels through a fifth light path that can intersect therewith. five light beam generating means; 1) a fifth detection means for detecting the fifth light beam; C) a predetermined distance from the fifth light path behind the first to fourth light paths and located at the front end portion; a sixth light beam for generating a sixth light beam traveling along a sixth light path extending in a transverse direction and intersecting the sixth light beam; and-) for detecting the sixth light beam. An independent complete module as set forth in Claims/J, characterized in that it comprises a sixth detection means tube. l) the object has a cover and a base, the first lead and the second lead are supported on the base between the acid paste and the cover, and the base and cover are aligned with relative offset; a) fifth light beam generating means for producing a fifth light beam traveling along a fifth light path extending transversely to and intersecting said cover; b) said fifth light beam; C) sixth light beam generating means for producing a sixth light beam traveling in a sixth light path extending transversely to and intersecting said base; and d ) The independent complete module according to claim 1, further comprising a sixth detection means for detecting the sixth light beam. tS) in an apparatus for testing the alignment of leads spaced apart from each other on an object; b) optical means responsive to said data; A lead alignment state inspection device characterized by comprising data processing means for determining the spacing between the leads.4) A patent claim characterized in that the optical means generates data corresponding to one point on the leads. The device described in the range @ts. 1) The apparatus of claim 12, wherein said optical means produces a data corresponding to a single point on each lead. /f) said optical means a) means for producing a light beam for producing a light beam traveling along an optical path intersecting said lead; and b) detecting said light beam and outputting data in response to said detected light beam. Claim I!, characterized in that it comprises inspection means for! The device described in lj. /9) Claim 1, characterized in that the data output from the detection means is a pulse waveform signal, and each pulse of the pulse waveform signal corresponds to one of the leads.
9. The device according to 9. 20. The apparatus according to claim 19, wherein the data processing means includes calculation means for calculating the distance between the leads in response to a pulse of the pulse waveform signal. J/) the object is movable relative to the light beam generating means and the detecting means, and the calculating means is configured such that the object is movable with respect to the light beam generating means and the detecting means; The apparatus according to claim H, further comprising conversion means for converting data into distance data representing the distance between the leads. -) The object has an axis, and the lead has a bend along a first line parallel to the axis, or a bend along a second line perpendicular to the S line, or a bend component along the first line; When the curve along the line has a curve that is a combination of components, the optical means is configured to produce a first light beam that travels along a first optical path along the second line and lands on each of the leads. b) first detection means for detecting the second light beam and producing first output data having information on the spacing between the leads in the direction along the first line; C) A second light beam generating means for generating a second light beam that travels along a second light path forming a certain angle with the first and second lines and intersects the seven leads: d) *Detects the second light beam and further comprising second detection means for producing first output data having combination information of the spacing between the leads in the direction along the first and second lines. Device. JJ) The data processing means includes a) first determining means for determining the inter-lead distance in the direction along the first and second lines in response to the first output data;
and b) #lJ! The apparatus according to claim W11, further comprising second determining means for determining the distance between the leads in the direction along the second tin in response to the output data. .mu.) The apparatus according to claim 1, wherein the second determining means comprises subtracting means for subtracting the information of the first output data from the information of the second output data. f) A plurality of said first ends spaced apart from an object having a shaft, a first end, a first side on which the first lead is located, and a second side on which the second lead is located. One lead and a plurality of the second leads spaced apart from each other extend, and a curved upward curve along a second line perpendicular to the first lead or a parallel curve component along the first line and a parallel curve component along the second line. In an apparatus for inspecting the alignment state of at least one first and second lead having a combination of curves with upward curve components: a) a moving means for moving an object; b) a means for moving an object; b) a means for moving an object; generating first data having information on the parallel bending of the first lead and the parallel bending of the second lead in the direction along the line, and the combined bending of the first lead in the direction along the second and second lines; C) an optical means for generating second data having information on the combined bending of the second lead, the optical means being adapted to allow the object to move relative to the optical means; and C) the first data. In response to data, parallel bending of the first lead and parallel bending of the second lead in the direction along the first line are detected, and in response to the second and second data, the parallel bending of the first lead and the parallel bending of the second lead are detected along the second line. A lead alignment state inspection device comprising data processing means for detecting an upward curvature of the first lead and an upward curvature of the second lead in the direction. m) The moving means includes a gravity applying means for directing the object in a direction across the optical means. a first light source means for generating a first light beam that travels along a first optical path along the first line and intersects only one point of the first lead; b) detecting and emitting the first light beam in a direction along the first line; e) a first detection means for producing a first output D, -# having information on the spacing between the first leads; second light source means for producing a second light beam; d) a second output for detecting the second light beams B, -5 and having information on the spacing between the second leads in the direction along the first lines; a second detection means for producing data; ・) a third light beam for producing a third light beam that travels along a third optical path forming an angle with the first and second lines and intersects only one point of the first lead; three light source means; f) third detection means for detecting the third light beam and producing third output data having combined information of the spacing between the first twins in the direction along the first and second lines; g) fourth light source means for generating a fourth light beam that travels along a fourth optical path forming a certain angle with the first and second lines and intersects only at one point of the second lead; detecting the fourth light beam; a fourth detection means 2 for generating fourth output data having combination information of the spacing between the second leads in the direction along the second line; i) a front end located in front of the first to fourth optical paths; fifth light source means for transmitting a fifth light beam extending in a transversely extending fifth light path and intersecting the front end; j) detecting the fifth light beam and producing fifth output data; fifth detection means; k) a sixth optical path located behind the first to fourth optical paths and at a predetermined distance from the fifth optical path and extending in a direction across the front end; sixth light source means for producing an intersecting sixth light beam; l) sixth detection means for detecting said sixth light beam and producing sixth output data, said fifth output data and said sixth light beam; The apparatus according to claim 11at, wherein the output data includes velocity information of the object.) The object has a shape,
Device according to claim HJj, characterized in that the moving means comprises rails for guiding the object, the rails having a shape adapted to the shape of the object.