JP2001208680A - Egg inspection apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate an after-treatment in the event that an egg to be inspected is broken when passing through a light projector and a light receiver, thus reducing the time required for the after-treatment. SOLUTION: Protective covers 22 and 32 for covering, respectively, the outsides of the light projector 21 and the light receiver 31 on an inspection table 10 at the top of a base are installed by engagement of a guide rail 6 secured to their insides with a guide member 5 fixed on top of the inspection table 10. Sliding of the guide member 5 using the guide rail 6 as a guide causes the protective covers to slide on the inspection table 10, enabling the span between the opposite surfaces of the protective covers 22 and 32 to be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an egg inspection apparatus used for non-destructively inspecting the internal condition of eggs such as chicken eggs.

[0002]

2. Description of the Related Art Eggs produced at a poultry farm include various abnormal eggs such as blood spot eggs in which small clots are mixed in the eggshell, and flesh eggs in which meat-like substances are mixed. The abnormal eggs are
Since it cannot be shipped as a product, the inside of the egg before shipment is inspected non-destructively to eliminate abnormal eggs.

[0003] Conventionally, such an egg inspection is generally performed by the following method.
An egg is held over light emitted from a light source such as a fluorescent lamp, and the light transmitted through the inside of the eggshell is visually inspected by an inspector from the opposite side of the light source to determine whether there is an abnormality.
There is a problem that a skilled inspector is required to make accurate judgments on a large number of eggs.

In order to solve such a problem, Japanese Patent Publication No. Sho 56-7
No. 35 discloses an egg inspection apparatus for performing the above egg inspection without relying on humans. This device is to execute the procedure of the inspection performed by the inspector as it is, the light emitter and the light receiver are arranged facing each other with the optical axis aligned, and the egg to be inspected is arranged between them, and The inspection light emitted from the light emitter is applied, and the transmitted light inside the eggshell is received by the light receiver. This light reception result, more specifically, the presence or absence of an abnormality is determined based on the intensity level of the transmitted light. It is configured.

At this time, inspection accuracy can be improved by using, as the inspection light, light of a specific wavelength that has a large degree of absorption in a target abnormal portion. For example,
When it is determined whether or not the blood spot egg is present, the wavelength (575 nm) which is easily absorbed by the small clot mixed into the eggshell is used.
If the light having (before and after) is used as the inspection light, the level difference of the transmitted light received by the light receiver between a normal egg and an abnormal egg (blood spot egg) becomes large, and accurate judgment can be made. Becomes Such use of the inspection light having the specific wavelength can be easily realized by disposing a spectral filter on the light emitting side or the light receiving side and extracting only a desired wavelength component.

[0006] In the egg inspection apparatus thus configured, the eggs being transported are installed in the middle of the egg sorting line before shipment so that the eggs being transported pass sequentially between the opposing portions of the light emitter and the light receiver.
It can be used to perform internal inspection in conjunction with sorting eggs according to appearance such as color, size, etc. In such a usage form, deterioration of inspection accuracy due to the influence of the surrounding environment is prevented, and various external forces In order to prevent the damage caused by the action of (1), the outside of the light emitting device and the light receiving device is covered with separate protective covers.

[0007]

In the above-described use mode, while the light emitter and the light receiver are arranged as narrowly as possible in order to improve the inspection accuracy, the egg to be inspected is Is easily broken by a slight impact, and the egg passing between the light emitter and the light receiver is broken by a minor collision with peripheral parts such as a protective cover, causing an accident that the contents scatter and stain the surrounding area. It is inevitable to do.

Conventionally, in the post-treatment of such an accident, a complicated operation of cleaning a narrow gap between the protective cover of the light emitting device and the light receiving device is required. However, in many cases, it is difficult to approach the cleaning place, and there is a problem that a large amount of time is required for post-processing work performed while the sorting line is stopped.

The present invention has been made in view of such circumstances, and can easily perform post-processing of damage to an egg that occurs when the egg passes between the light emitter and the light receiver. It is an object of the present invention to provide an egg test apparatus which does not require a long time for the sorting line for a long time, and does not force the sorting line to be stopped for a long time.

[0010]

According to a first aspect of the present invention, there is provided an egg test apparatus comprising a light emitter and a light receiver which are arranged opposite to each other with their optical axes aligned, and a protective cover which covers the outside of each of them. Provided on a table, the inside of the egg arranged at the inspection position between the opposing surfaces of the two protective covers, based on the intensity of the transmitted light that is emitted from the light projector, transmitted through the egg, and received by the light receiver In the egg testing apparatus, the width of the gap between the facing surfaces is increased by moving one or both of the protective covers on the base.

According to the present invention, the width between the opposing surfaces of the protective cover separately covering the outside of the light emitter and the light receiver is increased by moving one or both of them, and when the egg conveyed therebetween is broken. Is easily performed between the expanded opposing surfaces.

[0012] Further, the egg detecting apparatus according to the second invention of the present invention comprises:
The widening means in the first invention is a guide rail which is installed on the protection cover or the base substantially in parallel with the optical axis, and a guide member mounted on the base or the protection cover and engaged with the guide rail. And wherein the protection cover is slid by sliding the guide member along the guide rail to realize the widening.

In the present invention, the guide member attached to the base or the protective cover is engaged with a guide rail that is installed on the protective cover or the base substantially in parallel with the optical axes of the light emitter and the light receiver. The protection cover is moved by sliding the guide member along the guide rail to realize the widening.

[0014] Further, the egg detecting apparatus according to the third invention of the present invention comprises:
The guide member according to the second aspect of the present invention is characterized in that the guide member includes a roller that rolls on the guide rail.

According to the present invention, a guide member engaged with the guide rail is provided with a roller which is in contact with the guide rail, so that the guide member slides along the guide rail and the protective cover moves in accordance with the slide. , And smoothly occur under the rolling resistance of the roller.

[0016] Further, the egg detecting apparatus according to the fourth invention of the present invention comprises:
The widening means in the first invention is provided on the upper surface of the base so as to be rotatable about an axis orthogonal to the base, and is provided with a turntable to which the protective covers are respectively attached. Is characterized in that the facing surface is changed to realize the widening.

In the present invention, a protective cover for covering one or both of the light emitter and the light receiver is mounted on a turntable that rotates about an axis perpendicular to the upper surface of the base, and the rotation of the turntable causes the two protective covers to face each other. Change the surface to achieve widening.

Further, the egg detecting apparatus according to the fifth invention of the present invention is
A protection cover that is widened by any of the widening means of the first to fourth inventions, a position where the width between the opposing surfaces is widened,
It is characterized in that a stopper is provided for restraining at each of the position where the width between the two opposing surfaces is reduced.

In the present invention, the protective cover which can be widened by the widening means is restrained by the stopper at positions before and after the widening, thereby suppressing unnecessary movement of the protective cover during inspection or post-processing at each position.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing the embodiments. FIG. 1 is an external perspective view of an egg inspection apparatus according to the present invention, and FIG. 2 shows a state where the egg inspection apparatus is incorporated in a transport line of an egg to be inspected. As shown in FIGS. 1 and 2, the egg inspection apparatus according to the present invention includes a light transmitting unit 2 and a light receiving unit 3 on an upper surface of an inspection table 10 provided on an upper portion of a base 1 having a rectangular box shape. It is configured so as to be opposed in the longitudinal direction at a predetermined interval at which an egg E described later can pass.

Reference numeral 4 in FIG. 2 denotes a transport device for transporting a plurality of eggs E. The transfer device 4 includes a guide rail 40
, A plurality of transfer arms 41, 41, 41, 41,... Which are suspended and supported at predetermined intervals below this and move in the directions shown by arrows in the figure.
And fingers 42, 42,... Attached to the lower ends of the transfer arms 41, 41 and opened and closed in the forward and backward directions in the transfer direction, and each of the fingers 42, 42,. A transfer arm that guides E, E ... using the guide rail 40
. Are transported in the direction of the arrow by the movement of 41, 41. The egg testing apparatus according to the present invention is arranged such that the eggs E, E,... Conveyed by the conveying device 4 pass between the light projecting unit 2 and the light receiving unit 3 on the inspection table 10 as described above. Used.

FIG. 3 is a front sectional view showing the internal structure of the light projecting unit 2 and the light receiving unit 3. The light emitting unit 2 includes an inspection table 10
A support bracket 20 erected on the upper surface of the device so as to be substantially orthogonal thereto, and a projector fixedly supported by the support bracket 20
21 and a protective cover 22 that covers the outside thereof.

The light projector 21 has an optical axis substantially parallel to the upper surface of the inspection table 10, and is fixed to the support bracket 20 with one side facing the light receiving section 3 and the other side. ,
One optical fiber 23 as a light guiding means is connected. The optical fiber 23 is extended inside the base 1 through the through hole 11 formed through the inspection table 10 at a corresponding position,
It is connected to a light emitting unit (not shown) provided inside the base 1. With this configuration, the projector 21 has the base 1
Light emitted from an internal light emitting unit is guided through the optical fiber 23, and this light is converted into parallel light by an optical system built in the projector 21, and emitted along an optical axis parallel to the upper surface of the inspection table 10. Is done.

The protective cover 22 that covers the outside of the projector 21 as described above is a rectangular box whose bottom is entirely open and whose height is reduced in a tapered shape toward one side, as described above. It is mounted on the upper part of the supported light projector 21 with the bottom surface facing downward, the support side of the support bracket 20 is received in the high dimension part, and the connection side of the optical fiber 23 is received in the taper part, as described later. Protective cover facing the light receiving unit 3
A light-projecting hole 24 is formed in the peripheral wall of the inner wall 22 at a height matching the inner light-projecting device 21, and light emitted from the light projecting device 21 is led out through the light-projecting hole 24 to the outside, and The light is emitted to the egg E passing between the section 3 and the above-described section.

On the other hand, the light receiving section 3 is, like the light projecting section 2,
A support bracket 30 erected on the upper surface of the inspection table 10 so as to be substantially perpendicular thereto, a light receiver 31 fixed and supported by the support bracket 30, and a protective cover 32 covering the outside of the receiver.
It is comprised including.

The light receiver 31 has its optical axis aligned with the optical axis of the light projector 21 and is fixed to the support bracket 30 with one side facing the light projector 2 and the other side. Are connected to each other as light guide means. These optical fibers 33, 33... Are extended inside the base 1 through through holes 12 formed through the corresponding positions of the inspection table 10, and are connected to a light receiving unit (not shown) provided inside the base 1. Each is connected.

The protective cover 32 that covers the outside of the light receiver 31 is a rectangular box having the same shape as the protective cover 22 that covers the outside of the light projector 21, and is placed above the light receiver 31 with the open bottom face down. Put the support side to the support bracket 30 on the high dimension part,
.. Are connected to the optical fibers 33, 33,. A light receiving hole 34 is formed through the peripheral wall of the protective cover 32 facing the light emitting unit 2 at a height position matching the inner light receiver 31.
At 31, transmitted light emitted from the light projector 21 and transmitted through the egg E is received through the light receiving hole 34.

The light received by the light receiver 31 is transmitted through the optical fiber 3.
The light is guided to the light receiving unit inside the base 1 through each of 3, 33. Here, the three optical fibers 33, 33,... Are used to separate the received light into three light beams and to lead them to a light receiving unit. These spectral components guided to the light receiving unit are used to extract different wavelength components by respective filters, and in the light receiving unit, the intensity of the received light is obtained for each wavelength component. Based on the comparison result between the two, a determination is made as to whether the internal state of the egg E is good or not.

It should be noted that the light received by the light receiver 31 is the same as that of the above-mentioned 3
Not only one, but also two or four or more light beams may be split, and the light splitting may be performed in the light receiving unit by using another light splitting means such as a half mirror. Since the method of determining the quality of the internal state of the egg E based on the received light intensity in the light receiving unit is not the subject of the present application, detailed description thereof will be omitted.

The protective covers 22 and 32 that cover the outside of the light emitter 21 and the light receiver 31 are used to perform the inspection of the eggs E performed as described above based on the result of the light emitted from the light emitter 21 being received by the light receiver 31. It is provided to protect the projector 21 and the light receiver 31 from various external forces inevitably applied in use, while being performed with high accuracy without being affected by, and is provided with the egg testing apparatus according to the present invention. The feature lies in the mounting structure of these protective covers 22 and 32.

FIG. 4 is an explanatory view of the mounting structure of the protective cover 22 that covers the light projector 21 and is a perspective view showing a state where the protective cover 22 is removed. As described above, the projector 21 is fixedly supported by the support bracket 20 fixed to the upper surface of the inspection table 10 with an optical axis substantially parallel to the upper surface. On both sides of the support bracket 20, a pair of guide members 5, 5 having an L-shaped cross section are provided so that their respective longitudinal directions are the light projector 21.
Are fixed so that one side thereof rises substantially perpendicularly to the upper surface of the inspection table 10 along the optical axis of the inspection table 10. A pair of rollers 50, 50 are perpendicular to the outer surface and rotatably supported about an axis substantially parallel to the upper surface of the inspection table 10.

On the other hand, a pair of guide rails 6 and 6 having a U-shaped cross section are provided on the inner surface of the protective cover 22 with the respective openings facing inward as indicated by broken lines in the figure. The protective cover 22 is fixed to the upper surface of the inspection table 10 by engaging each of the guide rails 6, 6 with the guide members 5, 5, respectively. I have.

FIG. 5 is a perspective view showing an engagement relationship between the guide member 5 and the guide rail 6. At the lower edge of the guide rail 6, as shown, cutouts 60, 60 having a size capable of receiving the rollers 50, 50 are formed at positions corresponding to the rollers 50, 50 in the guide member 5. The engagement between the guide member 5 and the guide rail 6 corresponds to each of the rollers 50, 50, as indicated by the arrow in the drawing, inside the protective cover 22 lowered on the inspection table 10. The guide rails 6 are received inside the guide rails 6 through the cutouts 60, 60, respectively, and the rollers 50, 50 are brought into rolling contact with the inner surface of the upper edge of the guide rails 6.

As described above, the protective cover 22 attached by the engagement between the guide rail 6 and the guide member 5 is provided on the inspection table 10 to which the guide member 5 is fixed, by using the guide rail 6 as a guide. Due to the sliding of the guide member 5 caused by the rolling of 50, the slide can be slid in the longitudinal direction of the guide rail 6 and the guide member 5, that is, in the optical axis direction of the projector 21.

The protective cover 22 thus mounted is
In contrast to the case of mounting, the rollers 50, 50 can be easily removed by pulling them upward at slide positions aligned with the corresponding cutouts 60, 60, and Maintenance work such as replacement and inspection of the projector 21 can be easily performed.

The lower edge of the guide rail 6 is connected between the notches 60, 60 at positions where the notches 60, 60 are formed by a predetermined distance from each other. A stopper hole 61 is formed. On the other hand, a stopper ball 51 is mounted on the upper surface of the inspection table 10 so as to partially project between the pivotal positions of the rollers 50, 50 near the guide member 5. As shown in FIG. 3, the stopper ball 51 is stored by being urged upward by a pressing spring 53 into a storage hole 52 having a predetermined depth formed in the inspection table 10, and the upward projection caused by the bias is performed. The storage hole 52 is mounted while being suppressed by the upper lid 54.

When the protective cover 22 is attached as described above, the stopper ball 51 mounted in this manner is engaged with one of the circular holes at both ends of the stopper hole 61 formed on the lower edge of the guide rail 6. In combination, it acts as a stopper for restraining the slide of the protective cover 22 guided by the guide rail 6. That is, the protective cover 22 is slidable within the length range of the stopper hole 61, and is restricted by the engagement between the stopper ball 51 and the stopper hole 61 at both ends of the slide stroke.

In FIG. 3, the upper and lower edges of the guide rail are shown by cross sections, and the engagement between the stopper ball 51 and the stopper hole 61 is such that the protective cover 22 covers the entire projector 21 as shown in the figure. The protective cover 22 which is generated in this state and is in this state
Can be slid in a direction away from the light receiving unit 3 until reaching the other end of the stopper hole 61 when a force is applied in a direction indicated by a white arrow in the drawing. .

Since the above-described sliding movement is accompanied by the rolling of the rollers 51, 51,... Rolling on the inner upper edge of the guide rail 6, the sliding movement can be performed smoothly with little resistance. Also, during this sliding movement, the stopper ball
The 51 abuts against the narrow portion of the stopper hole 61 and is pushed down into the storage hole 52 against the spring force of the pressing spring 53 to allow the sliding movement.

On the other hand, a protective cover 32 covering the outside of the light receiver 31
Is mounted in such a manner that the guide member 5 fixed to the upper surface of the inspection table 10 is engaged with the guide rail 6 fixed to the inner surface of the protective cover 32, just like the protective cover 22 on the outer side of the projector 21. The protective cover 32 can be slid in a direction away from the light projecting unit 2 by sliding the guide member 5 along the guide rail 6 as shown by an outline arrow in the drawing. is there.

As described above, in the egg inspection apparatus according to the present invention, the projector 21 and the light receiver 31 which are opposed to each other with the optical axis aligned on the inspection table 10 above the base 1 are each provided with a protective cover.
Each of the protective covers 22 and 32 can be slid in a direction away from each other by sliding the guide member 5 along each of the guide rails 6.

FIG. 6 is a perspective view showing a state after the protective covers 22 and 32 have been slid. If the protective cover 22 and 32 As shown in the figure has slid, the width W ₁ between these opposing surfaces, the width W ₀ in candling operations shown in FIG. 2
It is in a state of being spread more. Also at this time, the protective cover
The light emitting device 21 and the light receiving device 31 inside 22 and 32 project outside through the light emitting hole 24 and the light receiving hole 34 provided at corresponding positions.

Therefore, the eggs E, E,... Successively transported in the state shown in FIG. 2 are passing between the light projecting unit 2 and the light receiving unit 3 during the egg inspection operation performed as described above. Egg E
Even if the contents are broken for some reason and the contents scatter around, the protective covers 22 and 32 are slid as shown in FIG. Post-processing including cleaning of the outer surfaces of 22 and 32 and cleaning of the light-emitting end of light-emitting device 21 and the light-receiving end of light-receiving device 31 can be easily performed.

The sliding movement of the protective covers 22 and 32 for widening can be smoothly performed with slight resistance by the rolling of the rollers 51, 51,. Is easily realized. In addition, protective cover 22
And 32 are constrained by the action of the stopper ball 51 to the narrowed state shown in FIG. 2 and the widened state shown in FIG. 6, respectively. There is no possibility that the protective covers 22 and 32 will rattle during the post-processing operation, and both operations can be performed satisfactorily.
Further, the protection covers 22 and 32 can be easily removed as described above, and maintenance work inside each can be easily performed.

In the above embodiment, both the protective covers 22 and 32 are slidably mounted, but only one of them is slidably mounted, and the width between the two covers 22 and 32 is increased. May be performed. In the above embodiments, the protective cover
The guide rails 6 are attached to the inner surfaces of the inspection tables 10 and 10, and the guide members 5 are attached to the upper surfaces of the inspection tables 10. The guide rails 6 may be attached to each other and engaged with each other.

Further, in the above embodiment, the width is widened by sliding the protective covers 22 and 32. However, it is also possible to widen by moving other than the sliding.

FIGS. 7 and 8 are external perspective views showing another embodiment of the egg testing apparatus according to the present invention. In this embodiment, the protective cover 22 and the protective cover 32 of the light projecting unit 2 and the light receiving unit 3 are separately supported on the upper surface of the inspection table 10 so as to be rotatable around an axis orthogonal to the rotating table 7. 7 and is adapted to be rotated together with these turntables 7 and 7. FIG. 7 shows a state at the time of the egg inspection operation, and FIG.
And the protective cover 32 are rotated 90 ° in opposite directions.

[0048] Figure 7 the protective cover 22 and the protective cover 32 as shown is a box of rectangular cross-section, is opposed longitudinal end faces, the eggs E which passes sequentially passes through the width W ₀ of between opposite surfaces, E have been subjected to the above-described inspection. When the protective cover 22 and the protective cover 32 in such a state are rotated by 90 ° in opposite directions, the two covers 22 and 32 are in a state where their respective side surfaces are opposed to each other, and the width W ₂ between the opposed surfaces is set.
Are larger than the width W ₀ during the egg inspection operation, and the eggs E, E.
The above-mentioned post-processing following the damage of
It can be easily done between 22,32.

Note that, in the claims of the present application, reference numerals are entered for easy comparison with the drawings, but this entry limits the configuration of the present invention to the configuration of the accompanying drawings. Not something.

[0050]

As described above in detail, in the egg testing apparatus according to the first invention of the present invention, the width between the opposing surfaces of the protective covers separately covering the outside of the light emitter and the light receiver is set to one or both of them. Equipped with a widening means that spreads by moving, so that the post-processing when the egg to be inspected is broken between the two covers can be easily performed between the expanded opposing surfaces. This saves time and eliminates prolonged pauses.

In the egg inspection apparatus according to the second invention,
Since the guide member attached to the base or the protective cover is engaged with a guide rail provided on the protective cover or the base so as to be substantially parallel to the optical axes of the light emitter and the light receiver, the widening means is formed. The widening between the protective covers can be easily realized by the sliding movement of.

[0052] In the egg inspection apparatus according to the third invention,
Since the engagement between the guide rail and the guide member is realized by rolling the roller provided on the guide member into contact with the guide rail, the sliding movement of the protective cover caused by the slide of the guide member along the guide rail is achieved. In addition, smooth operation can be performed under the rolling resistance of the roller.

In the egg inspection apparatus according to the fourth invention,
Since the protective cover is attached to the turntable that rotates about an axis orthogonal to the upper surface of the base, the width between the protective covers can be easily realized by changing the facing surface of the protective cover by rotating the turntable.

Further, in the egg detecting apparatus according to the fifth invention,
A stopper that restricts the widenable protective cover between the position where the width between the opposing surfaces is increased and the position where the width between the opposing surfaces is reduced is provided, so that the post-processing operation performed in the widened state and the narrow state The present invention has excellent effects, for example, there is no possibility that the protective cover during the egg inspection operation performed in step (1) is rattled, and both operations can be performed satisfactorily.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an egg inspection apparatus according to the present invention.

FIG. 2 is a perspective view showing a state where the egg to be inspected is incorporated into a transport line.

FIG. 3 is a front sectional view showing an internal configuration of a light projecting unit and a light receiving unit.

FIG. 4 is an explanatory diagram of a mounting structure of a protective cover that covers the light projector.

FIG. 5 is a perspective view showing an engagement relationship between a guide member and a guide rail.

FIG. 6 is a perspective view showing a state after sliding a protective cover.

FIG. 7 is an external perspective view showing another embodiment of the egg test apparatus according to the present invention.

FIG. 8 is an external perspective view showing another embodiment of the egg test apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 Emitter 3 Receiver 5 Guide member 6 Guide rail 7 Turntable 10 Inspection table 21 Emitter 22 Protective cover 31 Receiver 32 Protective cover 50 Roller 51 Stopper ball 61 Stopper hole E Egg

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Yuji Watanabe 2-35 Jinbucho, Yao-shi, Osaka Inside Kubota Electronic Technology Center Co., Ltd. (72) Inventor Hironobu Nishihata 2-35 Jinbucho, Yao-shi, Osaka Inside the Kubota Electronics Technology Center Co., Ltd. (72) Noriko Nomura, Inventor 2-35 Jinbucho, Yao City, Osaka Prefecture Inside the Kubota Electronics Technology Center Co., Ltd. (72) Keiichi Nariyama 2-35, Jinbucho, Yao City, Osaka Prefecture No. Inside the Kubota Electronic Technology Center Co., Ltd. (72) Akio Kamada 2-35 Jinbucho, Yao-shi, Osaka F-term inside the Kubota Electronic Technology Center Co., Ltd. 2G051 AA01 AB06 AB20 BA20 BB17 CA02 CA07 CB02 CC17 DA01 DA06 2G059 AA05 BB11 CC20 DD12 EE01 FF06 GG10 JJ17 KK01 KK03

Claims (5)

[Claims] 1. A base (1) comprising a light emitter (21) and a light receiver (31) which are arranged opposite to each other with their optical axes aligned, and protective covers (22) and (32) which respectively cover the outside thereof.
The inside of the egg (E) disposed on the inspection position between the opposing surfaces of the two protective covers (22) and (32) is emitted from the light projector (21) and transmitted through the egg (E). In the egg inspection apparatus for inspecting based on the intensity of the transmitted light received by the light receiver (31), the protective covers (22) and (3) on the base (1) may be used.
2) An egg testing apparatus comprising a widening means for expanding the width between the opposed surfaces by one or both of the movements. 2. The widening means is substantially parallel to the optical axis, and the protection cover (22), (32) or the base (1).
And a guide member (5) attached to the base (1) or the protective covers (22), (32) and engaged with the guide rail (6). Sliding of the guide member (5) along the guide rail (6) causes the protective covers (22) and (32) to slide.
2. The egg test apparatus according to claim 1, wherein the widening is realized by sliding. 3. The guide member (5) comprises a roller (50) rolling on the guide rail (6).
An egg testing device as described. 4. The turntable (4), wherein the widening means is rotatably supported on an upper surface of the base (1) around an axis orthogonal to the base, and to which the protective covers (22) and (32) are attached, respectively. The egg inspection apparatus according to claim 1, further comprising: (7), wherein the rotation of the turntable (7) changes the facing surface of the protective covers (22) and (32) to realize the widening. 5. A stopper (51) for restraining the protective covers (22) and (32) at a position where the width between the facing surfaces is increased and a position where the width between the facing surfaces is reduced. (6
The egg testing apparatus according to any one of claims 1 to 4, further comprising (1).