Device and method for continuously inspecting containers

• US 9,995,691 B2
• Filed: 10/09/2015
• Issued: 06/12/2018
• Est. Priority Date: 12/23/2014
• Status: Active Grant

• Current Assignee: Krones AG (Krones)
• Original Assignee: Krones AG (Krones)
• Inventors: Piana, Stefan, Richter, Stefan
• Primary Examiner(s): Punnoose, Roy M
• Application Number:
  US15/534,422
• Publication Number:
  US 20170343483A1
• Time in Patent Office: 977 Days
• Field of Search: 3562401
• CPC Class Codes: B65G 17/26 comprising a series of co-operating units, e.g. interconnected by pivots
• CPC Class Codes: B65G 2201/0244 Bottles
• CPC Class Codes: B65G 2207/08 Adjustable and/or adaptable to the article size
• CPC Class Codes: B65G 23/23 of electric linear motors
• CPC Class Codes: B65G 47/244 by turning them about an axis substantially perpendicular to the conveying plane
• CPC Class Codes: B65G 47/2445 by means of at least two co-operating endless conveying elements
• CPC Class Codes: B65G 54/02 electrostatic, electric, or magnetic
• CPC Class Codes: G01N 2021/845 Objects on a conveyor
• CPC Class Codes: G01N 21/9009 Non-optical constructional details affecting optical inspection, e.g. cleaning mechanisms for optical parts, vibration reduction
• CPC Class Codes: G01N 2201/062 LED's

Abstract

The present disclosure provides an inspection device for continuously inspecting fed containers, in particular bottles, said inspection device comprising a feed device configured to feed containers thereto in succession, at least one inspection unit, configured to inspect the fed containers, a discharge conveying device configured to discharge the inspected containers, and a throughput station for the containers, which is arranged between the feed conveying device and the discharge conveying device, wherein the throughput station comprises a conveyor arrangement with an individual drive and a plurality of conveying units, which are movable by means of the individual drive individually and independently of one another, the conveyor arrangement being configured to convey the containers from the feed conveying device to the discharge conveying device.

Claims

1. An inspection device for continuously inspecting fed containers, in particular bottles, comprising:

a feed conveying device configured to feed containers to the inspection device in succession,

at least one inspection unit configured to inspect the fed containers,

a discharge conveying device configured to discharge the inspected containers, and

a throughput station for the fed containers, which is arranged between the feed conveying device and the discharge conveying device,

wherein

the throughput station comprises a conveyor arrangement with an individual drive and a plurality of conveying units, which are movable by means of the individual drive individually and independently of one another, the conveyor arrangement being configured to convey the containers from the feed conveying device to the discharge conveying device;

wherein the conveyor arrangement comprises a first conveyor track having movably arranged thereon a first plurality of conveying units, and a second conveyor track having movably arranged thereon a second plurality of conveying units,

wherein the first conveyor track and the second conveyor track are arranged relative to one another and relative to the feed conveying device and the discharge conveying device such that, in the area of the throughput station, pairs of oppositely engaging conveying units for the containers are formed, said pairs consisting each of a conveying unit of the first plurality of conveying units and of a conveying unit of the second plurality of conveying units; and

wherein the conveying units comprise laterally engaging holding devices, and wherein oppositely engaging conveying units of a pair are oriented relative to one another in the area of the throughput station such that at least one container is held and conveyed in a form-fit or in a force-fit manner between the holding devices of oppositely engaging conveying units such that a bottom area of the at least one container is freely accessible during conveyance.

2. The inspection device according to claim 1, wherein the holding devices comprise one or a plurality of Y-shaped clamps.

3. The inspection device according to claim 2,

wherein a right angle is provided between the Y-legs of the clamps;

and/or

wherein the holding devices are arranged on the conveying units in a linearly displaceable manner.

4. The inspection device according to claim 2, wherein the plurality of Y-shaped clamps are provided with end mounted rollers.

5. The inspection device according to claim 1, wherein the holding devices are pivotable.

6. The inspection device according to claim 1,

wherein the individual drive is a linear motor drive,

wherein the conveying units are configured as carriages, which are movable individually and independently of one another via magnetic interaction with the linear motor drive, and

wherein the conveyor arrangement additionally comprises an open-loop and/or closed-loop control unit, which is configured to move the conveying units from a pick-up site for the containers at the feed conveying device to a discharge site for the containers at the discharge conveying device.

7. The inspection device according to claim 6, wherein the open-loop and/or closed-loop control unit is configured to move the conveying units of the first plurality of conveying units at least along part of the throughput station at a speed which is higher than that of the conveying units of the second plurality of conveying units.

8. The inspection device according to claim 1, further comprising a first inspection station arranged near the feed conveying device and configured to inspect the fed containers passing the first inspection station from the side, and/or a second inspection station arranged near the discharge conveying device and configured to inspect the passing fed containers passing the second inspection station from the side.

9. The inspection device according to claim 8, wherein the first and/or second inspection station(s) comprise(s) an optical system with a camera, said optical system being configured such that the side of the container to be inspected is detected within a predetermined angular area.

10. The inspection device according to claim 9, wherein the angular area of the first inspection station is smaller than the angular area of the second inspection station.

11. The inspection device according to claim 1, further comprising a bottom inspection station in an area of the throughput station said bottom inspection station being configured to inspect bottoms of the fed containers passing the bottom inspection station.

12. A method of continuously inspecting containers, in particular bottles, comprising the following steps:

successive feeding of containers to a throughput station of an inspection device,

conveying the fed containers in the throughput station,

inspecting the fed containers in the throughput station, and

discharging the inspected fed containers that are inspected,

wherein

the fed containers are conveyed in the throughput station by means of a conveyor arrangement comprising an individual drive and a plurality of conveying units movable individually and independently of one another by means of the individual drive,

wherein the fed containers are conveyed in the throughput station by means of oppositely engaging conveying units and are, while being conveyed, held in a form-fit or in a force-fit manner between laterally engaging holding devices of the oppositely engaging conveying units such that a bottom area of the conveyed containers is freely accessible during conveyance.

13. The method according to claim 12,

wherein the individual drive is a linear motor drive, and

wherein the conveying units are configured as carriages, which are movable in a controlled manner through magnetic interaction with the linear motor drive.

14. The method according to claim 12, wherein the containers are fed to the conveyor arrangement in a mutually abutting mode.