KR20210038484A - Apparatus for checking - Google Patents

Abstract

The present invention relates to an inspection device for inspecting a loading state of an electronic component loaded on a loading tray. According to the present invention, the inspection device comprises: a light irradiator irradiating light to an electronic component loaded on the loading tray at an inspection position; a camera capturing the electronic component where the light is irradiated by a light irradiation source; and an analyzer comparing a shape of the light inside an image obtained by the camera with a shape of the light to inspect the loading state of the electronic component. According to the present invention, provided is technology of a new method for inspecting the loading state of the electronic component by using the shape of the irradiated light.

Description

Inspection device {APPARATUS FOR CHECKING}

The present invention relates to an inspection device for checking whether an electronic component is properly loaded in a loading tray for transporting an electronic component.

For most electronic components including solid-state drives (SSDs), the product production process is terminated upon completion of labeling. Products after the production process are finally tested for electrical properties and only good products are shipped.

In the related art, a task of attaching a label to an SSD or an operation of electrically connecting the label-attached SSD to a tester was done by hand. As a result, the labeling process and the testing process were slow, and the productivity was degraded due to the high consumption of manpower.

Accordingly, the applicant proposed an automation technology for labeling with Korean Application No. 10-2014-0041140 (name of the invention: electronic component casing equipment and labeling equipment, hereinafter referred to as the first predecessor equipment).

In addition, Korean Application No. 10-2014-0091798 (name of the invention: electronic component test equipment, hereinafter referred to as the second predecessor equipment) is a test equipment that tests electronic parts that have been attached to the label by being connected to the rear end of the first predecessor equipment. We proposed a description of.

The present invention is an excerpt of the inspection device applied to the second prior equipment. Here, the inspection device is a device for checking the loading condition of electronic parts loaded in the loading tray.

On the other hand, Korean Patent Laid-Open No. 10-2008-0013658 (hereinafter referred to as prior art 1) discloses a technique for checking whether a semiconductor device is loaded in a tray through light emission and light reception. However, according to the prior art 1, although it is possible to check whether an electronic component is present in the tray, there is a limit to checking the loading condition. In addition, in order to apply the prior art 1, electronic components must be loaded so as to have a relatively wide surface in the direction in which light is irradiated.

In addition, Korean Patent Laid-Open No. 10-2011-0100403 (hereinafter referred to as prior art 2), etc., suggests a technology for checking using a camera, but in the case of prior art 2, the surface taken by the camera must be relatively wide.

Therefore, it is difficult to apply the prior art 1 and the prior art 2 when electronic components are mounted in a loading tray and mounted in a form as in the second prior equipment.

An object of the present invention is to provide a new technology capable of grasping the loading state of electronic components in a loading tray using the form of irradiated light.

The inspection device according to the present invention includes a light irradiator for irradiating light onto electronic components loaded in a loading tray at an inspection position; A camera for photographing an electronic component irradiated with light by the light irradiator; An analyzer that analyzes the shape of light in the image acquired by the camera and checks the loading state of the electronic component; Includes.

A stopper for stopping the loading tray being moved by the moving device at the inspection position; It further includes.

A corrector for correcting the position of the loading tray stopped at the inspection position; It further includes.

The straightening device is capable of elevating and supporting a base plate that supports the bottom of the loading tray when ascending; A correction pin that lifts and descends together with the support plate and is inserted into a correction hole formed in the loading tray when the support plate is raised to correct the position of the loading tray; And a crew member for raising and lowering the base plate. Includes.

A preventer for preventing an excessive rise of the loading tray that rises together with the rise of the base plate; It further includes.

It is preferable that the upper surface of the base plate is a diffuse reflection prevention surface.

The light irradiator irradiates laser light having a line shape.

According to the present invention, since the shape of the irradiated light is recognized and the loading condition of the electronic parts loaded in the loading tray is checked by comparing the recognized light type with the reference light type, in particular, the loading of electronic parts loaded in an erect state. The status can be easily grasped.

1 to 5 are reference views for explaining the loading tray related to the inspection device according to the present invention.
6 is a reference diagram for explaining a socket board related to the loading tray of FIG. 1.
FIG. 7 is an exaggerated view of electronic components that are poorly loaded inclined to the loading tray of FIG. 1.
8 is a schematic perspective view of an inspection device according to an embodiment of the present invention.
9 to 14 are reference diagrams for use in explaining the inspection apparatus of FIG. 8.

Hereinafter, preferred embodiments according to the present invention as described above will be described with reference to the accompanying drawings, but redundant descriptions will be omitted or compressed as far as possible for the sake of brevity.

<Description of the loading tray>

1 is a plan perspective view of a loading tray (LT) related to the inspection device according to the present invention, Figure 2 is a bottom perspective view of the loading tray (LT).

The loading tray (LT) includes a loading frame (LF) and 16 pairs of gripping elements (PE ₁ , PE ₂ ).

As shown in Fig. 2, the loading frame LF has four matching holes LH formed at the corners. In addition, correction holes CH are formed at the front and rear ends of the loading frame LF.

The gripping elements PE ₁ and PE _{2 are} provided with guide holes GH ₁ and GH ₂ . In addition, as shown in Fig. 3, the gripping elements PE ₁ and PE ₂ are supported _{by springs S 1} and S ₂ so that the elastic force acts in the direction facing each other between the _{gripping elements PE 1} and PE _{2 forming a pair.} do. For reference, reference numeral ED in FIG. 3 is an SSD, which is a type of electronic component.

Therefore, as referred to in (a) of FIG. 4 which is very exaggerated, the gap (L) is wider than the _{gap (L 1} ) between the guide holes (GH ₁ , GH _{2 ) of the paired gripping elements (PE 1} , PE _{2 ). When} a pair of moving pins (MP ₁ , MP _{2 ) having 2} ) are inserted into the guide holes (GH ₁ , GH _{2 ), the gripping elements (PE 1} , PE) forming a pair as shown in Fig. 4(b) _The gap between 2) is widened. Accordingly, the electronic component ED can be inserted between the gripping elements PE ₁ and PE _{2 forming a pair.} And when a pair of movable pins (MP ₁ , MP ₂ ) is removed from the guide holes (GH ₁ , GH ₂ ), the gap between the gripping elements (PE ₁ , PE _{2) is narrowed,} It becomes possible to grip both ends of the front and rear. The process and the reverse process with reference to FIG. 4 are performed when the electronic component ED is loaded or unloaded into the loading tray LT.

Referring to FIG. 5, it can be seen that the electronic component ED is erected in the loading tray LT. In this case, the terminal portion of the electronic component ED is located at the lower end of the electronic component ED.

Meanwhile, as long as the electronic component ED is held by the gripping elements PE ₁ and PE ₂ as shown in FIG. 5 and has the same gap as the gap between the pair of guide holes GH ₁ and GH ₂ When the pair of alignment pins (AP ₁ , AP ₂ ) are inserted into the pair of guide holes (GH ₁ , GH ₂ ), respectively, the relative positions between the gripping elements (PE ₁ , PE _{2) are fixed.} Accordingly, the position of the electronic component ED can be aligned, and the state of the electronic component ED held by the _{holding elements PE 1} and PE _{2 can be firmly maintained.}

<Explanation of the tester's socket board>

6 is a schematic perspective view of a socket board (SB) configured in the tester.

The socket board SB has 16 test sockets SK, 4 matching pins LP, and 16 pairs of alignment pins AP ₁ and AP ₂ .

The test sockets SK are electrically connected to the electronic component ED. That is, by inserting the terminal portion of the electronic component ED into the slot (terminal groove) of the test socket SK, the electronic component ED and the test socket SK are electrically connected, and accordingly, the electronic component ED is connected to each other. It is electrically connected to the tester.

The matching pin (LP) guides the loading tray (LT) and the socket board (SB) to be matched. In this example, the matching pin LP is inserted into the matching hole LH formed in the loading tray LT, thereby inducing registration between the loading tray LT and the socket board SB.

Alignment pins (AP ₁ , AP ₂ ) provided in pairs are the electronic components (ED) and test sockets by properly inserting the terminals of the electronic components (ED) loaded in the loading tray (LT) into the slots of the test socket (SK). It serves to align the position of the electronic component (ED) so that the (SK) can be properly electrically connected. _{That is, the distance between the alignment pins (AP 1} , AP ₂ ) provided in pairs as described above with reference to FIG. 5 is a pair of gripping elements holding the electronic component (ED) loaded in the loading tray (LT). It is the same as the distance between the guide holes (GH ₁ , GH ₂ ) formed in (PE ₁ , PE _{2 ).} Therefore, by inserting the alignment pins (AP ₁ , AP ₂ ) into the guide holes (GH ₁ , GH ₂ ), the position of the electronic component (ED) is also aligned to the correct position, and the gripping elements (PE ₁ , PE ₂ ) become the electronic component ( ED) can be held more firmly.

In the case of the above-described structure of the loading tray (LT) and the socket board (SB), the loading tray (LT) and the socket board (SB) first match as the loading tray (LT) descends, and then to the loading tray (LT). The loaded electronic components ED and the test socket SK of the socket board SB are electrically connected. Therefore, for accurate connection between the electronic components ED and the test socket SK, the electronic components ED must be properly loaded in the loading tray LT. For example, as shown in the exaggerated diagram of FIG. 7, the loading tray LT is in a state where the electronic component ED is inclined due to the malfunction of the _{gripping elements PE 1} and PE _{2 or the insertion of the electronic component ED.} May be loaded on. In such a case, even if the loading tray LT is lowered, the electronic component ED and the test socket SK do not match, so that electrical connection between the electronic component ED and the test socket SK is not made. For this reason, in order to check the loading condition of the electronic component (ED) loaded in the loading tray (LT) in an erected state, an inspection device as described below is required.

<Description of the inspection device>

8 is a schematic perspective view of the inspection device 800 according to the present invention.

The inspection device 800 includes light irradiators 811 to 816, a camera 820, an analyzer 830, a stopper 840, a corrector 850, and a preventer 861, 862.

Six light irradiators 811 to 816 are provided, and as shown in FIG. 9, the laser beam LL in the form of a line is irradiated to the lower inspection position CP. Accordingly, the laser light LL is irradiated on the upper surface of the electronic component ED loaded in the loading tray LT at the lower inspection position CP.

The camera 820 photographs the electronic component ED irradiated with light by the light irradiators 811 to 816 from the upper side of the loading tray LT.

The analyzer 830 compares and analyzes the form of light in the image acquired by the camera 820 and the form of light as a reference stored in advance to check the loading state of the electronic component ED. For example, in (a) of FIG. 10, a state in which the electronic components ED are properly loaded in the loading tray LT is exaggerated (the thickness of the electronic component is exaggerated) when viewed from the top. When the laser light LL is irradiated from the light irradiators 811 to 816 in the state of Fig. 10(a), as shown in Fig. 10(b), a certain length and distance are maintained at the top of the electronic component ED. The laser light LL is expressed in the form. However, when any one or more specific electronic components ED' is mounted in an inclined manner as in FIG. 11(a), the specific electronic component ED' having a poor loading condition as shown in FIG. 11(b) The shape of the laser light LL is changed. Accordingly, in the case of FIG. 11, the analyzer 830 determines that the electronic component ED is loaded poorly, and generates an alarm and a jam.

The stopper 840 stops the loading tray LT being moved by the moving device MA at the inspection position CP. Here, the light irradiators 811 to 816 and the camera 820 are positioned above the inspection position CP. This stopper 840 includes a cylinder 841 and a stop member 842 as shown in FIG. 12.

The cylinder 841 provides the power required to lay or stand the stop member 842.

The stop member 842 is laid or erected according to the operation of the cylinder 841 as shown in FIGS. 12A and 12B. Therefore, in the case of (a) of FIG. 12, the loading tray (LT) can pass over the stopper 840 according to the operation of the moving device (MA), but in the case of (b) of FIG. 12, the stop member 842 As a result, the movement of the loading tray LT is blocked, so the movement is stopped.

The corrector 850 corrects the position of the loading tray LT stopped at the inspection position CP. To this end, the corrector 850 includes a support plate 851, correction pins 852a and 852b, and a lift member 853 as shown in FIG. 13.

The support plate 851 is provided to be elevating and supports the bottom surface of the loading tray LT when ascending. Here, the upper surface of the base plate 851 is preferably a diffuse reflection prevention surface capable of preventing diffuse reflection. In this case, the image acquired by the camera 820 is not distorted by light.

The correction pins 852a and 852b are provided on both front and rear ends of the support plate 851 and move up and down together with the support plate 851. These correction pins (852a, 852b) are ascending with the rise of the base plate 851 as shown in (a) to (c) of Fig. 14, the correction hole (CH) of the loading tray (LT) is inserted. Accordingly, the position of the loading tray LT is precisely calibrated by the calibration pins 852a and 852b.

The elevator member 853 provides a lifting force for lifting the base plate 851. Such a lift source 853 may be provided with a cylinder or a motor.

The preventers 861 and 862 prevent excessive rise of the loading tray LT that rises by the operation of the straightener 850. In other words, the preventer is provided in the form of a retractor () when viewed from the front-rear direction, and is in contact with the upper end of the loading tray LT to prevent excessive rise of the loading tray LT.

Subsequently, the operation of the inspection device 800 as described above will be described.

The loading tray LT, which is moved to the inspection position CP by the moving device MA, is stopped at the inspection position CP by the stopper 840. For reference, when the loading tray (LT) stops at the inspection position (CP), the operation of the moving device (MA) is also stopped. Subsequently, the corrector 850 is operated so that the base plate 851 rises, and the position of the loading tray LT is precisely calibrated by the action of the calibration pins 852a and 852b. Of course, excessive rise of the loading tray LT is prevented by the preventers 861 and 862.

When the position of the loading tray LT is corrected, the laser light LL is irradiated to the plane of the loading tray LT, and photographing is performed by the camera 820. Further, the analyzer 830 compares and analyzes the form of light in the image acquired by the camera 820 with the form of light as a reference, and determines the loading state of the electronic component ED.

When it is determined that the loading state of the deficit component ED is good, the corrector 850 operates and the loading tray LT descends. Therefore, the loading tray LT is again placed on the moving belt MB of the moving device MA, and the loading tray LT is moved to another position by reactivating the moving device MA. Of course, if it is determined that the loading state of the deficit component ED is poor, the analyzer 830 generates an alarm and a jam.

As described above, a detailed description of the present invention has been made by examples with reference to the accompanying drawings. By the way, the above-described embodiment has been only described with reference to a preferred example of the present invention. Therefore, the present invention should not be understood as being limited to the above embodiments, and the scope of the present invention should be understood as the claims and equivalent concepts to be described later.

800: Inspection device
811 to 816: light irradiation device
820: camera
830: analyzer
840: stopper
850: straightener
851: base plate 852a, 852b: calibration pin
861, 862: preventer

Claims (7)

A light irradiator for irradiating light onto electronic parts loaded in the loading tray at the inspection position;
A camera for photographing an electronic component irradiated with light by the light irradiator;
An analyzer that analyzes the shape of light in the image acquired by the camera and checks the loading state of the electronic component; Characterized in that it comprises a
Inspection device. The method of claim 1,
A stopper for stopping the loading tray being moved by the moving device at the inspection position; Characterized in that it further comprises
Inspection device. The method of claim 2,
A corrector for correcting the position of the loading tray stopped at the inspection position; Characterized in that it further comprises
Inspection device. The method of claim 3,
The calibrator,
A support plate that can be raised and lowered and supports the bottom of the loading tray when ascending;
A correction pin that lifts and descends together with the support plate and is inserted into a correction hole formed in the loading tray when the support plate is raised, thereby correcting the position of the loading tray; And
A crew member for raising and lowering the base plate; Characterized in that it comprises a
Inspection device. The method of claim 4,
A preventer for preventing an excessive rise of the loading tray that rises together with the rise of the base plate; Characterized in that it further comprises
Inspection device. The method of claim 4,
Characterized in that the upper surface of the base plate is a diffuse reflection prevention surface
Inspection device. The method of claim 1,
A light irradiator, characterized in that it irradiates a laser light having a form of a line.
Inspection device.

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