Glass Bottle Inspection Device

Glass bottle inspection device

Glass bottle inspection device

In producing a glass bottlesupplied by glass bottle manufacturer, a crack such as crazing may be sometimes formed in a wall thickness of a bottle-mouth portion. This crack is referred to as a check. The location of the bottle-mouth portion where a check is generated is limited to some extent, and typically there are a mouth-check generated in the top surface or near the top surface of the bottle mouth, a screw-check generated in a screw thread portion of the bottle mouth, and a neck-check generated in a neck portion of the bottle mouth.

Conventionally, there has been known an inspecting apparatus for inspecting a check of a glass bottle which can inspect the presence or absence of a check automatically by imaging a bottle-mouth portion of a glass bottle. The check inspecting apparatus comprises plural pairs of light-emitting units and light-receiving units which are arranged so as to surround the bottle-mouth portion of the glass bottles, and the plural pairs of the light-emitting units and the light-receiving units are adjusted and arranged in an optimum position with respect to the bottle-mouth portion of the glass bottle to be inspected. Then, reflected light from the glass bottle is received by each pair of the light-emitting unit and the light-receiving unit, and the obtained signals are processed to detect a check in the glass beverage bottles-mouth portion. In this case, light emitted from the light-emitting unit is applied to the bottle-mouth portion, and if there is a check, the light is reflected by a crack plane of the check and is thus illuminated brightly.

The above-mentioned conventional check inspection apparatus has plural inspection stations for inspecting a check in the bottle-mouth portion of the glass bottle supplier, and the glass bottle is held and conveyed along a circumference by a star wheel for inspection, and is then indexed in the plural inspection stations. In the plural inspection stations, while the glass bottle is rotated about its own axis, the glass bottle is inspected to detect each defect such as a mouth-check, a screw-check, or a neck-check individually.

Further, in the glass bottlesupplied by glass bottle manufacturer having a screw thread portion on a bottle-mouth portion, the screw thread portion has complicated curved surfaces. Thus, a non-defective bottle and a defective bottle cannot be distinguished from each other. Further, conventionally, it is difficult to detect a molding failure in the screw thread portion or the like which is generated in molding a bottle.

by: wan

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