JP7243464B2 - WORK INSPECTION METHOD, INSPECTION JIG, AND INSPECTION DEVICE - Google Patents

Description

The present invention relates to a work inspection method, an inspection jig, and an inspection apparatus.

Conventionally, as disclosed in Patent Document 1, as a method for inspecting the presence or absence of cracks, flaws, etc. in a glass tube, a plurality of glass tubes are arranged in parallel in a direction orthogonal to the axial direction, and then the plurality of glass tubes are visually inspected. Known ways to check.

JP 2019-043790 A

In the above-mentioned workpieces with a shape that has an axial direction, such as tube glass, defective products of the same type with different dimensions are mixed, or there are multiple types with different dimensions, and a group of regular types of workpieces with different dimensions If there is a risk of work contamination, it is preferable to inspect for such contamination. In such an inspection, it is extremely complicated to individually check the dimensions of each workpiece in the workpiece group.

SUMMARY OF THE INVENTION An object of the present invention is to provide a workpiece inspection method, an inspection jig, and an inspection apparatus that make it possible to easily identify a workpiece group in which workpieces having different dimensions are mixed.

A work inspection method for solving the above problems includes a work row forming step of arranging a plurality of works so that predetermined axial directions of the works are aligned, and forming a plurality of work rows so that the axial directions are parallel. a positioning step of bringing adjacent workpieces in each row of workpieces into contact with each other and aligning ends of the rows of workpieces in the extending direction with a reference position; a determination step of determining whether or not the workpieces having different dimensions in the axial direction are included in the row of workpieces based on the result of comparing the positions of the end faces in the axial direction of the row of workpieces. .

According to this method, in each row of workpieces after the alignment process, adjacent workpieces are brought into contact with each other, and the positions of the ends in the extension direction of each row of workpieces after the alignment process are aligned at the reference position. It is Therefore, in the judgment process, it becomes easy to compare the positions of the end surfaces of the workpieces in each row of workpieces. It is possible to easily determine whether or not.

It is preferable that the workpiece inspection method described above further includes an extracting step of determining that the workpiece having different dimensions is a different type in the determining step, and extracting the different type of workpiece.
According to this method, it is possible to reduce the number of works with different dimensions included in the work group.

In the workpiece inspection method described above, it is preferable that the alignment step and the determination step are further repeated after the extraction step.
According to this method, it is possible to further reduce the number of works with different dimensions included in the work group.

In the workpiece inspection method described above, the alignment step includes: a first alignment step of aligning one end of both ends of each workpiece row in the extension direction with a first reference position; a second positioning step of aligning the other end of the portion with a second reference position, wherein the determining step comprises a first determining step performed after the first positioning step and a second determining step performed after the second positioning step; 2 determination steps.

According to this method, it is possible to further reduce the number of works with different dimensions included in the work group.
The workpiece inspection method includes, after the workpiece row forming step, an ultraviolet irradiation step of irradiating each workpiece row with ultraviolet rays, and different types of workpieces made of different materials based on the light emission state of the workpieces irradiated with the ultraviolet rays. and a determination step of determining whether or not the

According to this method, it is possible to easily discriminate a work group in which different kinds of works made of different materials are mixed.
In the above work inspection method, it is preferable that in the ultraviolet irradiation step, the ultraviolet rays are applied after the visible light is applied to each of the work rows.

According to this method, for example, it becomes easy to identify a workpiece made of phosphor having a long-lasting property.
In the above work inspection method, the shape of the work is tubular or columnar, and the material of at least one of the work of a regular type and the work of a different type having a different material is B ₂ O ₃ , MgO, SrO, and BaO may be a glass having a composition in which the total content is 1% by mass or more.

In the above workpiece inspection method, the material of at least one of the regular type workpiece and the foreign type workpiece having a different material may be glass containing an aluminate phosphor.

The inspection jig used in the workpiece inspection method includes a bottom portion having a plurality of grooves in which the respective rows of workpieces are arranged, and a wall portion erected on the bottom portion, the wall portion comprising: It is preferable that the end face of each row of workpieces has a wall surface that can come into contact with the wall surface, and that the wall surface extends in a direction orthogonal to the axial direction of the workpieces in each row of workpieces.

According to this configuration, the wall surface of the wall portion of the inspection jig can be used as a reference position in the alignment process of the workpiece inspection method.
An inspection apparatus used in the above workpiece inspection method includes an inspection jig and a tilting mechanism for tilting the inspection jig. A bottom portion having a groove and a wall portion erected on the bottom portion, the wall portion having a wall surface with which the end surface of each work row can come into contact, The inspection jig extends in a direction perpendicular to the axial direction of the work, and the tilt mechanism is arranged such that one of both end portions in the extension direction of each work row is located below the other end. is preferably inclined.

According to this configuration, by moving each work along the groove of the inspection jig, the ends in the extension direction of each work row can be easily brought into contact with the wall surface of the inspection jig. Therefore, the alignment process of the workpiece inspection method can be easily performed.

It is preferable that the inspection apparatus further includes a vibrating mechanism that applies vibration to the inspection jig.
According to this configuration, each work on the inspection jig can be easily moved along the groove by vibration from the inspection jig, so that the alignment process of the inspection method for the work can be performed smoothly.

According to the present invention, it is possible to easily distinguish a work group in which works having different dimensions are mixed.

(a) is a schematic diagram showing an inspection device in an embodiment, and (b) is a sectional view showing an inspection jig. FIG. 4 is a flowchart showing a work inspection method according to the embodiment; FIG. 4 is an explanatory diagram for explaining a work inspection method; (a) is an explanatory diagram for explaining a work inspection method, and (b) and (c) are enlarged views showing the work. (a) and (b) are explanatory diagrams for explaining a work inspection method. (a) and (c) are explanatory diagrams for explaining a work inspection method, and (b) is an enlarged view showing the work. FIG. 4 is a flowchart showing a work inspection method; FIG. 4 is an explanatory diagram for explaining a work inspection method; 4 is a graph showing the relationship between wavelength and emission intensity.

An embodiment of a work inspection method, an inspection jig, and an inspection apparatus will be described below with reference to the drawings.
As shown in FIG. 1(a), an object to be inspected in the workpiece inspection method is a workpiece W having a shape having an axial direction L. As shown in FIG. As shown in FIGS. 2 and 7, the workpiece W inspection method of the present embodiment includes inspection of different types of dimensions and inspection of different types of materials.

A method for inspecting the workpiece W can be performed using an inspection jig 11 capable of arranging a plurality of workpieces W. FIG.
<Different product inspection for dimensions>
As shown in FIG. 2, the inspection of different types of workpieces W in the method of inspecting workpieces W includes a workpiece row forming step (step S1), a first alignment step (step S2), and a first determination step (step S3). including. In the dimensional heterogeneous product inspection, after the first determination step of step S3, a first extraction step (step S4) can be performed as necessary.

As shown in FIGS. 2 and 3, in the work row forming process of step S1, a plurality of works W are arranged so that predetermined axial directions L of the works W are aligned, and the work pieces are arranged so that the axial directions L are parallel. Form multiple columns. The work line of this embodiment includes a first work line A1 and a second work line A2 parallel to the first work line A1. The number of work rows may be two, or three or more.

As shown in FIGS. 2 and 4(a), in the first alignment step of step S2, adjacent works W in each work row are brought into contact with each other. In the first alignment step of step S2, for example, the works W adjacent to each other in the first work row A1 are brought into contact with each other, and the works W adjacent to each other in the second work row A2 are brought into contact with each other. make contact.

Furthermore, in the first positioning step of step S2, the end of each work row in the extension direction is aligned with the reference position. Specifically, the first end surface E1 of the first end surface E1 and the second end surface E2 of each work row is aligned with the first reference position B1. The first end face E1 and the second end face E2 of each work row are both end faces of each work row in the axial direction L of the work W. As shown in FIG. In other words, the end face of the row of workpieces corresponds to the outer end face in the axial direction of the workpiece W arranged at the extreme end of the row of workpieces.

The first reference position B1 is defined by, for example, a single flat surface or a straight line orthogonal to the direction in which the work row extends, and is typically defined by a first wall surface 13a and a second wall surface of the inspection jig 11, which will be described later. 13b and the like.

As shown in FIGS. 2 and 4A, in the first determination process of step S3, after the alignment process of step S2, the positions of the end surfaces of the workpieces W in each row of workpieces are compared with each other. For example, as shown in FIGS. 4(b) and 4(c), in the first determination process of step S3, the position of the end surface F1 of the work W1 in the first work row A1 and the position of the end surface F1 of the work W1 in the second work row A2 The position of the end face F2 of the work W2 in the inside is contrasted.

In the first determination process of step S3, it is determined whether or not the workpieces having different dimensions in the axial direction L are included in the row of workpieces based on the result of comparing the positions of the end surfaces F1 and F2. In the portion shown in FIG. 4B, the position of the end face F1 of the work W1 in the first work row A1 and the position of the end face F2 of the work W2 in the second work row A2 are aligned with the work W1, W2. are different in the axial direction L of . In other words, the end face F1 of the work in the first work row A1 and the end face F2 of the work in the second work row A2 are on a plane ( in a straight line in a plan view). In this case, in the first determination step of step S3, it can be determined that at least one of the first workpiece row A1 and the second workpiece row A2 includes workpieces having different dimensions in the axial direction L. .

On the other hand, in the portion shown in FIG. 4C, the position of the end face F1 of the work W1 in the first work row A1 and the position of the end face F2 of the work W2 in the second work row A2 are aligned with the work W1. , W2 at the same position in the axial direction L. In other words, the end face F1 of the work W1 in the first work row A1 and the end face F2 of the work W2 in the second work row A2 are planes along the direction orthogonal to the axial direction L of the works W1 and W2. It is positioned above (on a straight line in plan view). In this case, in the first determination step of step S3, it is estimated that either the work W1 having the end faces F1, F1 or the work W2 having the end faces F2, F2 has different dimensions in the axial direction L. can be done. Furthermore, since the dimension of the workpiece W1 in the axial direction L is the same as that of most of the workpieces to be inspected, it is determined that the workpiece W2 has a different dimension in the first determination step of step S3. be able to.

As shown in FIGS. 2 and 5(a), in the first extraction process of step S4, the workpiece W2 having different dimensions is determined to be a different type in the first determination process of step S3, and the different type of workpiece W2 is extracted. .

In the inspection of different types of workpieces in the workpiece inspection method, it is preferable to further repeat the first alignment step of step S2 and the first determination step of step S3 after the first extraction step of step S4. As shown in FIG. 5(b), after the first alignment step of step S2, the positions of the end faces of the works W in the first work row A1 and the positions of the end faces of the works W in the second work row A2 are at the same position in the axial direction L of the workpiece, it can be determined in the first determination step of step S3 that workpieces with different dimensions are not included.

As shown in FIG. 2, the different product inspection of dimensions in the workpiece W inspection method includes a second alignment step (step S5), a second determination step (step S6), and a second extraction step (step S7). It is preferable to further include

As shown in FIGS. 2 and 6A, in the second alignment step of step S5, the second end face E2 of the both end faces of each work row is aligned with the second reference position B2.
In the portion shown in FIG. 6(b), the position of the end face F1 of the work W3 in the first work row A1 and the position of the end face F2 of the work W4 in the second work row A2 are aligned with the work W3, W4. are different in the axial direction L of . In this case, in the second determination step of step S6, it can be determined that at least one of the first workpiece row A1 and the second workpiece row A2 includes workpieces having different dimensions in the axial direction L. .

Here, the work W3 forms the second end face E2 of the first work row A1, and the work W4 forms the second end face E2 of the second work row A2. In addition, in the second positioning process of step S5 described above, the second end face E2 of each work row is aligned with the second reference position B2, so in the second determination process of step S6, either work W3 or work W4 It can be determined that one work has a different dimension in the axial direction L. Furthermore, since the dimension of the workpiece W4 in the axial direction L is the same as that of most of the workpieces to be inspected, it is determined that the workpiece W3 has a different dimension in the second determination step of step S6. be able to.

As shown in FIGS. 2 and 6(a), in the second extraction step of step S7, the workpiece W3 having different dimensions is determined to be a different type in the second determination step of step S6, and the different type of workpiece W3 is extracted. .

In the inspection of different types of workpieces W, it is preferable to repeat the second alignment process of step S5 and the second determination process of step S6 after the second extraction process of step S7. As shown in FIG. 6(c), after the second alignment process of step S5, the positions of the end faces of the works W in the first work row A1 and the positions of the end faces of the works W in the second work row A2 are at the same position in the axial direction L of the workpiece, it can be determined in the second determination step of step S6 that workpieces with different dimensions are not included.

The shape of the workpiece W is tubular or columnar. The difference between the dimension in the axial direction L of the normal workpiece W and the dimension in the axial direction L of the workpiece W having different dimensions is not particularly limited, but is, for example, within the range of 0.01 mm or more and 10 mm or less.

<Inspection of different types of materials>
Next, the inspection of different types of materials in the workpiece W inspection method will be described.
As shown in FIG. 7, the different material inspection in the workpiece W inspection method includes an ultraviolet irradiation step (step S8) and a determination step (step S9). In the inspection of different types of materials, after the determination process of step S9, an extraction process (step S10) can be performed as necessary.

As shown in FIGS. 7 and 8, in the ultraviolet irradiation step of step S8, each work row is irradiated with ultraviolet rays (UV). In the determination process of step S9, it is determined whether or not different types of workpieces made of different materials are included based on the light emission state of the workpieces W irradiated with ultraviolet rays. In this way, inspection of different types of materials using ultraviolet rays can be used for inspection of different types of workpieces having different light emitting states due to different materials. In the method for inspecting the work W, in the ultraviolet irradiation step of step S8, the visible light may be applied to each work row, and then the ultraviolet light may be applied.

FIG. 8 shows an example in which works W5 with different light emitting states are present in the first work line A1.
In the extracting process of step S10, the workpiece W5 determined to be a different type of workpiece made of different materials in the determining process of step S9 is extracted from the workpiece group.

Examples of the material of the work W include glass. As the material of at least one of the regular type work and the work of a different type different in material, for example, glass having a composition in which the total content of B ₂ O ₃ , MgO, SrO, and BaO is 1% by mass or more. is mentioned.

Specific examples of glass include, in terms of % by mass, SiO ₂ : 40 to 70%, B ₂ O ₃ : 5 to 20%, Al ₂ O ₃ : 0 to 15%, MgO+CaO+SrO+BaO+ZnO: 0 to 45%, Li ₂ O+Na ₂ O+K ₂ O: A glass having a composition of 5 to 25% (containing two or more selected from Li ₂ O, Na ₂ O, and K ₂ O).

At least one of the normal type of work and the different type of work made of different materials may be, for example, glass containing an aluminate phosphor.
The wavelength of the ultraviolet rays irradiated in the ultraviolet irradiation step of step S8 is preferably, for example, within the range of 190 nm or more and 380 nm or less, and more preferably within the range of 230 nm or more and 280 nm or less.

Here, the inspection of different types of materials will be described more specifically.
FIG. 9 shows the relationship between the wavelength of light emitted from the tube glass and the emission intensity when the tube glass is irradiated with ultraviolet light (wavelength: 250 nm). Varieties A, B, and C in FIG. 9 are tubular glass manufactured by Nippon Electric Glass Co., Ltd. "Variety A" is "trade name: LG-16", and "variety B" is "trade name : STI-3", and the "variety C" is "trade name: NLT-600". The glass compositions of these varieties A, B and C are different from each other. Variety A is lead glass and contains substantially no B ₂ O ₃ , MgO, SrO, or BaO. Variety B contains K ₂ O, BaO, and SiO ₂ as main components, and the total content of B ₂ O ₃ , MgO, SrO, and BaO is 1% by mass or more. Variety C contains BaO, K ₂ O, B ₂ O ₃ and SiO ₂ as main components, and the total content of B ₂ O ₃ , MgO, SrO and BaO is 1% by mass or more. As shown in FIG. 9, the emission spectra of the glass tubes of types A, B, and C differ from each other when irradiated with ultraviolet rays.

If one of the types A, B, and C is the regular type and the other types are different types, the color tone of the tube glass is visually recognized in the determination process of step S9, or an image captured by an imaging device is selected. By determining the color tone of the tube glass by the image processing of 1, it is possible to easily determine whether or not different types of tube glass are included.

Examples of uses of tube glass include thermistor use, diode use, reed switch use, and the like. The diameter dimension of such a glass tube is, for example, within the range of 0.2 mm or more and 10 mm or less, and the length dimension of the glass tube is, for example, within the range of 1 mm or more and 100 mm or less.

<Inspection Jig and Inspection Device>
Next, an inspection jig and an inspection apparatus will be described.
As shown in FIG. 1( a ), an inspection jig 11 used in the inspection method for the workpiece W includes a bottom portion 12 and a wall portion 13 erected from the bottom portion 12 . A bottom portion 12 of the inspection jig 11 has a plurality of grooves 14 in which each row of workpieces is arranged.

As shown in FIG. 3, the plurality of grooves 14 includes a first groove 14a in which the first work row A1 is arranged and a second groove 14b in which the second work row A2 is arranged. The wall portion 13 of the inspection jig 11 has a first wall surface 13a with which the first end face E1 of each work row can come into contact, and a second wall face 13b with which the second end face E2 of each work row can come into contact. The first wall surface 13a and the second wall surface 13b of the inspection jig 11 extend in a direction orthogonal to the axial direction L of the workpieces W in each row of workpieces. That is, the first wall surface 13a and the second wall surface 13b of the inspection jig 11 are flat surfaces extending in a direction perpendicular to the direction in which each groove 14 extends. Also, the first wall surface 13a of the inspection jig 11 faces the second wall surface 13b. The shape of each groove 14 is, for example, a round groove, but may be set arbitrarily as long as it can support the workpiece W in an axially slidable state, such as a V groove or a U groove. good too.

The color of the inspection jig 11 is preferably a dark color such as black, for example, and it is possible to select a color that facilitates visual recognition of the light emitting state of the workpiece W in the above-described inspection of different types.
As shown in FIGS. 3 and 4A, the first wall surface 13a of the inspection jig 11 serves as the first reference position B1 in the first alignment process of step S2. Also, the second wall surface 13b of the inspection jig 11 serves as the second reference position B2 in the second alignment step of step S5.

As shown in FIGS. 1A and 1B, the inspection device 15 includes an inspection jig 11 and a tilting mechanism 16 for tilting the inspection jig 11 . The tilting mechanism 16 of the inspection device 15 tilts the inspection jig 11 so that one of the end faces of each row of workpieces is downward with respect to the other end face.

The tilting mechanism 16 of the inspection device 15 tilts the inspection jig 11 so that, for example, the first end face E1 of each work row is located below the second end face E2. Accordingly, by moving each work W along the groove 14 of the inspection jig 11, the first end surface E1 of each work row can be easily brought into contact with the first wall surface 13a. Therefore, in the method for inspecting the workpiece W, the first alignment step of step S2 can be easily performed.

Also, the tilting mechanism 16 in the inspection device 15 tilts the inspection jig 11 so that the second end surface E2 of each work row faces downward with respect to the first end surface E1, for example. Accordingly, by moving each work W along the groove 14 of the inspection jig 11, the second end surface E2 of each work row can be easily brought into contact with the second wall surface 13b. Therefore, in the method for inspecting the workpiece W, the second alignment step of step S5 can be easily performed. As the tilting mechanism 16 of the inspection device 15, a well-known mechanism including a fluid pressure cylinder, a screw mechanism, or the like can be used.

As shown in FIG. 1( a ), the inspection device 15 further includes a vibrating mechanism 17 that vibrates the inspection jig 11 . Since each work W on the inspection jig 11 of the inspection device 15 is easily moved along the groove 14 by the vibration from the inspection jig 11, the first alignment step of step S2 and the second alignment step of step S5 are performed. The alignment process can be easily performed. A well-known mechanism including a motor or the like can be used as the vibration mechanism 17 .

The inspection apparatus 15 of this embodiment further includes a light source 18 that irradiates a plurality of works W with ultraviolet rays. With the light source of the inspection device 15, the ultraviolet irradiation step of step S8 in the above workpiece inspection method can be performed.

The inspection apparatus 15 further includes an imaging device 19 that captures images of a plurality of workpieces W placed on the inspection jig 11, and a determination unit 20 that performs the determination step of step S9 based on the images captured by the imaging device 19. I have. As the imaging device 19 of the inspection device 15, for example, a camera having an imaging device such as a CCD or CMOS can be used.

The imaging device 19 of the inspection device 15 acquires images of a plurality of works W irradiated with ultraviolet light from the light source 18 . The image acquired by the imaging device 19 is subjected to image processing as necessary. By using such an image, it is possible to identify the light emission state of the workpiece W irradiated with ultraviolet rays. Then, the determination unit 20 of the inspection device 15 determines based on the color tone of the workpiece W included in the image whether or not different types of workpieces made of different materials are included. In addition, as shown in FIG. 1A, the inspection device 15 may include a display unit 21 that displays an image acquired by the imaging device 19 . By displaying an image on the display unit 21 of the inspection device 15, the positions of different types of workpieces can be easily visually recognized.

Next, the operation and effects of this embodiment will be described.
(1) A workpiece W inspection method includes a workpiece row forming process in step S1, a first alignment process in step S2, and a first determination process in step S3. In the work row forming process of step S1, a plurality of works W are arranged so that predetermined axial directions L of the works W are aligned, and a plurality of work rows are formed so that the axial directions L are parallel. In the first positioning step of step S2, adjacent works W in each work row are brought into contact with each other, and the ends of each work row in the extending direction are aligned with the reference position. In the first determination process of step S3, after the alignment process of step S2, the positions of the end faces of the workpieces W in each row of workpieces are compared with each other. It is determined whether works with different dimensions are included.

According to this method, in each row of workpieces after the first alignment step of step S2, the workpieces W adjacent to each other are in contact with each other, and the extension direction of each row of workpieces after the first alignment step of step S2 are aligned at the first reference position B1. Therefore, in the determination process of step S3, it becomes easy to compare the positions of the end faces (end faces F1, F2, etc.) of the workpieces W in each row of workpieces. It is possible to easily determine whether works having different dimensions in the axial direction L are included. That is, it is possible to easily determine a work group in which works W2 having different dimensions are mixed.

(2) The method for inspecting the work W is such that, in the first determination step of step S3, the work W2 having different dimensions in the axial direction L is determined to be a different type of work, and the different type of work W2 is extracted in the first extracting step (step S4) is preferably further provided. In this case, it is possible to reduce the number of works with different dimensions included in the work group.

(3) In the inspection method of the workpiece W, after the first extracting step of step S4, the first alignment step of step S2 and the first determination step of step S3 may be repeated. In this case, it is possible to further reduce the number of works with different dimensions included in the work group.

(4) The alignment step of the inspection method for the workpieces W is a first alignment step (step S2) of aligning one end of each row of workpieces in the extension direction, that is, the first end surface E1, with the first reference position B1. and a second positioning step (step S5) of aligning the other end of each work row in the extending direction, ie, the second end face E2, with the second reference position B2. The determination process of the inspection method of the workpiece W includes a first determination process (step S3) performed after the first alignment process of step S2 and a second determination process (step S6) performed after the second alignment process of step S5. preferably included.

In this case, it is possible to further reduce the number of works with different dimensions included in the work group.
(5) The method for inspecting the workpiece W includes an ultraviolet irradiation step (step S8) of irradiating each row of workpieces with ultraviolet rays, and different types of workpieces made of different materials based on the light emission state of the workpieces W irradiated with ultraviolet rays. It is preferable to further include a determination step (step S9) of determining whether or not. In this case, it is possible to easily identify a work group in which different types of works W5 made of different materials are mixed.

(6) In the method of inspecting the work W, in the ultraviolet irradiation step of step S8, the visible light may be applied to each work row, and then the ultraviolet light may be applied. In this case, for example, it becomes easy to identify a workpiece made of phosphor having a long-lasting property.

(7) The inspection jig 11 used in the method of inspecting the workpiece W includes a bottom portion 12 having a plurality of grooves 14 in which the respective rows of workpieces are arranged, and a wall portion 13 erected on the bottom portion 12. there is The wall portion 13 of the inspection jig 11 has a wall surface with which the end face of each row of workpieces can come into contact. The wall surface of the wall portion 13 extends in a direction orthogonal to the axial direction L of the workpieces W in each row of workpieces.

According to this configuration, the wall surface of the wall portion 13 of the inspection jig 11 can be used as a reference position in the first alignment step (step S2) of the workpiece W inspection method, for example. Therefore, the method for inspecting the work W can be easily performed.

(8) The inspection device 15 used in the inspection method of the workpiece W includes the inspection jig 11 and the tilting mechanism 16 for tilting the inspection jig 11 . The tilting mechanism 16 of the inspection device 15 is arranged so that one end (for example, the first end surface E1) of both ends in the extension direction of each work row is located below the other end (for example, the second end surface E2). , the inspection jig 11 is tilted.

According to this configuration, by moving each work W along the groove 14 of the inspection jig 11 , for example, the ends in the extension direction of each work row can easily be aligned with the first wall surface 13 a of the inspection jig 11 . can be contacted. Therefore, for example, the first alignment step of step S2 can be easily performed.

(9) The inspection device 15 further includes a vibrating mechanism 17 that vibrates the inspection jig 11 . In this case, the workpieces W on the inspection jig 11 are easily moved along the grooves 14 by vibrations from the inspection jig 11. Therefore, for example, the first alignment step of step S2 can be smoothly performed. can be done.

(Change example)
This embodiment can be implemented with the following modifications. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

In the inspection method of the workpiece W, the alignment process such as the first alignment process of step S2 can be performed by manually tilting the inspection jig 11 without using the tilt mechanism 16 of the inspection device 15. . Alternatively, the alignment process may be performed by moving each workpiece W placed on the inspection jig 11 by hand or by a jig without tilting the inspection jig 11 .

- The vibrating mechanism 17 of the inspection device 15 can be omitted.
In the method of inspecting the work W, the inspection of different types of products with different dimensions may be performed using a jig other than the inspection jig 11 described above.

In the inspection of different types of workpieces W in the inspection method for workpieces W, the workpiece row forming step of step S1 and the first alignment step of step S2 can be performed simultaneously. That is, the workpieces W may be aligned while forming a row of workpieces.

In the inspection of a different product with different dimensions in the workpiece W inspection method, the first determination process in step S3 or the second determination process in step S6 can also be performed based on the image captured by the imaging device 19 .

In the inspection of different types of workpieces W in terms of dimensions, for example, the first extraction step in step S4 may be performed manually or automatically using a robot arm or the like.

In the inspection of different types of workpieces W, for example, in the first extraction process of step S4, only the different types of workpieces W2 are extracted. can be extracted all at once.

・In the method of inspecting the workpiece W, the inspection of different types of materials can be omitted.
In the method for inspecting workpieces W described above, the inspection of different types of materials is performed after the inspection of different types of dimensions. After the alignment process such as the first alignment process of (1), the inspection of different types of materials may be performed.

In the work W inspection method, the inspection of different types of materials can also be performed without using the inspection jig 11 described above.
- The inspection method for the workpiece W can also be applied to workpieces other than tube glass, such as columnar glass (solid glass). Moreover, the method for inspecting the workpiece W can also be applied to workpieces made of materials other than glass. Moreover, the cross-sectional shape of the workpiece is not limited to a circular shape, and may be a polygonal shape.

・When manufacturing a specific type of work, dimensional defects may occur due to some factors in the manufacturing process. In this specification, different types of workpieces having different dimensions in the axial direction L include not only intentionally manufactured workpieces, but also workpieces with dimensional defects that occur during the manufacturing process.

・When manufacturing a specific type of work, material defects may occur due to some factors in the manufacturing process. In this specification, the heterogeneous workpieces made of different materials include not only intentionally manufactured workpieces, but also workpieces with defective materials that occur during the manufacturing process.

DESCRIPTION OF SYMBOLS 11... Jig for inspection 12... Bottom part 13... Wall part 13a... First wall surface 13b... Second wall surface 14... Groove 14a... First groove 14b... Second groove 15... Inspection device 16 Tilting mechanism 17 Vibrating mechanism A1 First work row A2 Second work row B1 First reference position B2 Second reference position E1 First end face (end of work row) part), E2 .

Claims (11)

A work row forming step of arranging a plurality of works such that predetermined axial directions of the works are aligned, and forming a plurality of work rows so that the axial directions are parallel;
a positioning step of bringing adjacent works in each work row into contact with each other and aligning the ends of each work row in the extending direction with a reference position;
After the alignment step, based on the result of comparing the position of the axial end surface of the work in each work row, there are works with different axial dimensions in the work row. and a determination step of determining whether or not the work is included. 2. The work inspection method according to claim 1, further comprising a step of determining that the work having different dimensions is a different type of work in the determining step, and extracting the work of the different type. 3. The workpiece inspection method according to claim 2, further comprising repeating said positioning step and said determining step after said extracting step. The alignment step includes a first alignment step of aligning one end of both ends of each work row in the extension direction with a first reference position;
a second alignment step of aligning the other end of each of the work rows in the extending direction with a second reference position;
4. The determining step according to any one of claims 1 to 3, wherein the determining step includes a first determining step performed after the first alignment step and a second determining step performed after the second alignment step. Work inspection method. After the work row forming step, an ultraviolet irradiation step of irradiating each work row with ultraviolet rays;
5. The method according to any one of claims 1 to 4, further comprising a determination step of determining whether or not different types of workpieces made of different materials are included based on the light emitting state of the workpieces irradiated with the ultraviolet rays. Described work inspection method. 6. The workpiece inspection method according to claim 5, wherein, in said ultraviolet irradiation step, said ultraviolet rays are irradiated after said visible light is irradiated onto each of said rows of workpieces. The shape of the workpiece is tubular or columnar,
The material of at least one of the work of a regular type and the work of a different type having a different material is glass having a composition in which the total content of B ₂ O ₃ , MgO, SrO, and BaO is 1% by mass or more. The workpiece inspection method according to claim 5 or 6. 7. The workpiece inspection method according to claim 5, wherein the material of at least one of the regular type workpiece and the foreign type workpiece having a different material is glass containing an aluminate phosphor. An inspection jig used in the workpiece inspection method according to any one of claims 1 to 8,
a bottom portion having a plurality of grooves in which the respective work rows are arranged;
and a wall portion erected on the bottom,
The wall portion has a wall surface with which the end surfaces of the work rows can come into contact,
The jig for inspection, wherein the wall surface extends in a direction perpendicular to the axial direction of the workpieces in each row of workpieces. An inspection apparatus used in the workpiece inspection method according to any one of claims 1 to 8,
An inspection jig and a tilting mechanism for tilting the inspection jig,
The inspection jig has a bottom portion having a plurality of grooves in which the work rows are arranged, respectively;
and a wall portion erected on the bottom,
The wall portion has a wall surface with which the end surfaces of the work rows can come into contact,
The wall surface extends in a direction perpendicular to the axial direction of the workpieces in each row of workpieces,
The inspection device, wherein the tilt mechanism tilts the inspection jig so that one end of both ends in the extension direction of each work row is located below the other end. 11. The inspection apparatus according to claim 10, further comprising a vibrating mechanism that applies vibration to said inspection jig.

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