DE102006009282B4 - Device for introducing an inspection and / or control liquid into bottles or similar containers - Google Patents

Abstract

Device for introducing an inspection and / or control liquid into bottles or similar containers (2), having at least one injection nozzle (5) with a discharge opening, via which the inspection and / or control liquid, each with a predetermined volume, into the below the injection nozzle ( 5) on a container conveyor (4) passing container (2) through the container openings (2.1) is introduced, wherein the at least one injection nozzle (5) on a nozzle transport element (10) is provided which is driven by a drive (12) such the at least one injection nozzle (5) moves during a working stroke of the movement of the nozzle transport element (10) for introducing the inspection and / or control liquid with the respective container (2), characterized in that the at least one injection nozzle (5) is movable in such a way is that having at least the discharge opening during the working stroke en section at the beginning of the working stroke in the respective container (2) through the winding (2.1) immersed and at the end of the working stroke from the container (2) emerges again, the injector ...

Description

The The invention relates to a device for introducing a Inspection and / or control fluid in bottles or similar containers according to the generic term Claim 1.

devices of this kind are known. They essentially consist of several over a straight-lined, horizontal or substantially horizontal transport route in the conveying direction the transport path consecutively arranged stationary delivery or injectors. About these nozzles will the inspection and / or control fluid in the transport route upright, d. H. with its container or bottle axis in vertical Direction oriented and with the tank or bottle opening up lying container brought in.

With the inspection or control fluid in the respective container possibly existing foreign or pollutants, for example dirt particles, Residues etc. from the inner surface the container wall washed off and conveyed inside the container at the bottom.

Also It is known, a chemically active inspection or control liquid to be used, which with any substances present in the container chemically react, the resulting as a result of this reaction Substances are intended to detect foreign substances.

In a subsequent in the transport direction to the device for introducing inspection device is the container contents, So z. As the inspection and / or control liquid itself, or else in the container contained reaction products analyzed or on any existing Foreign and pollutants checked so that contaminated containers removed from the production line and, for example, one Purification treatment or be disposed of can.

The DE 94 03 641 U1 . DE 42 25 984 C2 and the EP 0 747 690 A1 show devices for injecting a fluid, wherein on a metering wheel, which is rotatably mounted about a horizontal axis, the spray nozzles are arranged. If a bottle is transported through under the dosing wheel, then a jet of fluid is directed into the bottle mouth. In the device used in the EP 0 759 330 A2 are disclosed, outlets or nozzles are arranged on an endless circulating belt, through which the fluid is discharged into the mouth of the bottle. in the DE 10 2004 034 852 A1 It is proposed to put a sampling head on the bottle mouth, in order to obtain an optimal measurement result in this way.

requirement for one proper inspection the container is that the inspection and / or control liquid exactly metered is introduced, d. H. in all containers within narrow limits is constant. This is especially useful for systems with high power considerable difficulties.

task The invention relates to a device for introducing an inspection and / or control fluid in bottles or similar containers show that even at high power (high number of treated containers per time unit) a precisely metered introduction of the inspection and control fluid allows. This object is achieved by a device having the features of Claim 1 solved.

A Particularity of the device according to the invention is that the at least one nozzle for introduction or injection the inspection and / or control liquid is not stationary above the Transport route is arranged, but at least on one Part of the way on the transport route with the respective container moved so that even with high performance of a plant an exactly ensures metered introduction of the inspection and / or control liquid in the container is.

The at least one injection nozzle is on a nozzle transport element provided with which this nozzle is moved on a self-contained trajectory, the one over the transport path extending working stroke in the transport direction and a return stroke having. During the Working stroke or at least on a partial length of this working stroke is the injector with at least one of the injection or injection of the inspection and / or control fluid causing discharge or nozzle opening immediately above the opening or muzzle of the respective container or passes through the mouth in the container into it. While the return stroke the at least one injection nozzle is spaced from the path of travel of the containers and can thus be moved back to a starting position, which then, for example the beginning of the next Working stroke forms.

at an embodiment the invention, the transport path is at least in the area of Device rectilinear or substantially rectilinear design.

The injection nozzle, the nozzle transport element and other functional elements form, for example, a complete construction and functional unit, which is attached to the container conveyor or on a machine frame provided there and in case of need, for example for repair and Maintenance purposes, can be replaced. In principle, there is also the possibility of providing at least two such modules or assemblies consecutively in the transport direction of the container transporter.

Of the Drive of the nozzle transport element takes place for example, such that whenever a container is is located under the injector located in the starting position or shortly before the drive for the nozzle transport element activated becomes. This is done z. B. controlled by a computer-aided control device in dependence of monitoring the container flow Sensors and / or depending on the speed of the container transporter.

Basically exists also the possibility to of the device or entrainment elements for the containers provide, so that then forcibly moved past the device and so for example a purely mechanical synchronization between the movement of the containers and the movement of the at least one injection nozzle is reached.

advantageous Further developments of the device according to the invention are the subject the dependent claims. The invention will be described below with reference to the figures of an embodiment explained in more detail. It demonstrate:

1 in a simplified representation and in side view of an apparatus for injecting an inspection or control liquid;

2 to explain the operation in an enlarged partial view of the mouth of a bottle, together with an injection nozzle of the device 1 in different working positions;

3 in a simplified representation, a section through the bottle mouth with the nozzle tube immersed in this mouth at the beginning and at the end of the injection process;

4 a section through a nozzle carrier and designed as a hollow or control shaft crankshaft on a rotating about a horizontal axis of the crank wheel of the device 1 in the case of a dosing and storage cell connected to a source for the inspection and / or control liquid;

5 in perspective and in section, the injection nozzle, together with the nozzle carrier and the rotating crank wheel, with a bearing housing for the rotating wheel, connected to a source for the inspection and / or control liquid metering and storage cell;

6 u. 7 Depictions like 4 and 5 but in the injector connected to the metering and storage cell;

8th in a simplified schematic representation and in section a metering or storage cell for use in the device of 1 ,

The in the figures generally with 1 designated device is used to inject a precisely metered amount of an inspection and / or control liquid in bottles 2 that z. B. of a translucent or translucent material, such as glass or a translucent plastic, for. B. PET are made and after the injection of the inspection or control liquid in the 1 schematically with the block designated inspection device 3 be supplied.

The inspection and / or control liquid is used in the manner known to those skilled to carry, wash, loosen, etc. of on or in the inner wall of the respective bottle 2 existing foreign and pollutants and to transport these substances to the bottom of the bottles 2 , or else to trigger a chemical reaction with the foreign and pollutants, so that such substances then in the inspection device 3 detected by suitable measuring or test methods, for example using chemical reactions and / or optoelectrical measuring and / or test methods, or chemical analysis methods, etc., and the relevant contaminated bottles 2 be discharged from the processing line and, for example, a cleaning or disposal can be supplied.

Prerequisite for a perfect measurement and / or test result in the inspection device 3 but is that in the individual bottles 2 introduced amount of inspection and / or control liquid, which is sterile water in the simplest case, is kept constant within narrow limits. This requires, among other things, that not only that when introducing the inspection and / or control liquid in a bottle 2 delivered volume within narrow limits is constant, but that in fact the entire volume of dispensed inspection and / or control liquid into the respective bottle 2 passes, ie when introducing no subset of the inspection and / or control liquid is lost. With the device 1 These conditions are optimally fulfilled.

The bottles 2 are in the illustrated embodiment successively in a single-lane bottle flow upright, ie with its bottle axis (FA) oriented in the vertical direction of the device 1 on a a straight, horizontal Conveyor-forming container conveyor 4 supplied and after the introduction of the inspection and / or control liquid in the conveying direction A to the inspection device 3 forwarded. Essential part of the device 1 is an injector 5 with a nozzle housing 6 and with one over the bottom of the nozzle housing 6 projecting nozzle tube 7 which is oriented with its longitudinal axis in the vertical direction and defines the nozzle axis DA. In the nozzle tube 7 is an injection channel also open at the bottom of this tube 8th educated.

The injector 5 is on a nozzle carrier 9 attached. This one is on a crank wheel 10 attached crankshaft 11 stored. By one in the 1 schematically indicated by a block drive 12 is the crank wheel 10 about its horizontal, perpendicular to the transport direction A oriented Kurbelradachse KA in the direction of the arrow B driven in rotation, in synchronism with the movement of the device 1 passing bottles 2 , This is the drive 12 by a computer-aided control electronics, for example 13 controlled as the control parameters, inter alia, the conveying speed of Behältertransporteurs 4 as well as sensor signals from sensors 14 considered, which at the transport route of container transporter 4 are provided and with which the position and also the actual conveying speed of the bottles 2 be recorded. For storage of the crank wheel 10 is a bearing element 15 provided, which in a suitable manner, in particular also adjustable on a machine frame 16 the device 1 is attached. The crankshaft 11 is with one end to the crank wheel 10 so attached that they are above the container carrier 4 facing end face of the disc-shaped Kurbelrades 10 projecting and oriented with its axis parallel to the Kurbelradachse KA, with respect to this axis but radially offset. Also the nozzle carrier 9 is thus together with the injector 5 in front of the container transporter 4 facing front of the crank wheel 10 and the container transporter 4 also facing the front of the bearing element 15 ,

On the bearing element 15 is the nozzle carrier 9 additionally by a double-parallelogram 17 led, consisting of the two, in the 1 upper parallelogram levers 18 , each with one end on the bearing element 15 and at the end of a common coupling element 19 are hinged, and consisting of the two lower parallelogram levers 20 , each with one end to the coupling element 19 and with her other end on the nozzle carrier 9 are articulated. Due to the double parallelogram guide 17 is achieved that with circumferentially driven crank wheel 10 the nozzle carrier 9 and with it the injector 5 move on a path enclosing the Kurbelradachse KA web, the nozzle axis DA but is always oriented in this movement in the vertical direction and in circulating crank 10 moved in a vertical plane, in which also the axes FA of the device 1 passing bottles 2 are arranged.

The drive of the crank wheel 10 takes place so that the direction of rotation B of this wheel at the respective lower, the container conveyor 4 facing peripheral region equal to the conveying direction A and at the top, the container conveyor 4 remote circumferential region opposite to the conveying direction A is.

By the revolving crank wheel 10 thus lead the injection nozzle 5 or its nozzle tube 7 a movement in which the nozzle tube 7 in a starting position initially with its lower end slightly above the level of the bottle opening 2.1 a bottle 2 is arranged (position a of 2 ). The axis of the crankshaft 11 is here, for example, in a common horizontal plane with the Kurbelradachse KA. In a subsequent working stroke, the injector move 5 and its nozzle tube 7 down and at the same time in the conveying direction A, whereby the nozzle tube 7 increasingly in the mouth of the bottle 2.1 entry (positions b and c of the 2 ). The largest penetration depth (position c of the 2 ) of the nozzle tube 7 is reached when the nozzle axis DA intersects the Kurbelradachse KA. After that, the nozzle tube moves 7 from the mouth of the bottle 2.1 in the vertical direction upward and initially still further in the conveying direction A (position d of 2 ), until the lower end of the nozzle tube 7 then finally at the level above the mouth of the bottle 2.1 located and the bottle 2 the device 1 towards the inspection station 3 leaves (position e the 2 ). Following are the further circulation of the crank wheel 10 the injector 5 and its nozzle tube 7 in a return stroke in turn to the starting position (position a of 2 ), so in the next bottle 2 the inspection and / or control fluid metered to be able to penetrate. The delivery of the inspection and / or control liquid takes place in each case during the working stroke, ie between the first immersion of the nozzle tube 7 in a bottle mouth 2.1 and the dewatering of the nozzle tube 7 from the mouth of the bottle 2.1 ,

The 3 shows again a section through the bottle mouth and the nozzle tube 7 in positions b, c and d of the 2 , dhua immediately after dipping the nozzle tube 7 into the mouth of the bottle 2.1 and immediately before the expulsion of the nozzle tube 7 from the mouth of the bottle. As shown, the nozzle axis DA against the immersion but also during the expiration offset above the bottle axis FA, in such a way that the nozzle tube 7 when immersed (position b) in the direction of advance A vorseilenden area of the bottle mouth 2.1 and when dipping (position d) the trailing in the conveying direction A area of the bottle mouth 2.1 is adjacent. This results in an extension of the distance and thus the time for the introduction of the inspection and / or control liquid in the respective bottle 2 which represents a special advantage.

The position of the injector 5 or the nozzle tube 7 in the 2 , Position a, corresponds to the starting position. From this position, the rotational movement of the crank wheel 10 each started when a bottle 2 has reached the position a. In particular, even at high power, ie at a high conveying speed of the bottles 2 a perfect immersion of the nozzle tube 7 in the respective bottle mouth 2.1 to be ensured by the control electronics 13 also caused by inertia in the system delays in the control of the drive 12 compensated, in that the startup process is initiated slightly prematurely, taking into account, among other things, the sensors 14 supplied signals and in the control electronics 13 stored records or curves.

To even with directly adjoining bottles 2 That is, in a tightly packed, single-lane bottle flow ensure that during the working stroke the nozzle tube 7 in the respective bottle 2 dips with this over a section of the bottle movement is moved, but at the same time the nozzle tube 7 after the return stroke again in the next following bottle 2 or whose mouth occurs is the radial distance between the axis KA of the crank wheel 10 and the crankshaft 11 in the illustrated embodiment at most equal to half the axis distance, the two closely following bottles 2 have, ie, at most equal to half the diameter of the bottles 2 have at their bottle area with the largest outer diameter.

For example, in case of disturbances damage to the injector 5 z. B. by striking the nozzle tube 7 on the mouth edge of a bottle 2 to avoid is the nozzle tube 7 sprung, ie against the action of a spring axially displaceable in the nozzle housing 6 held.

Each in a bottle 2 introduced volume of inspection and / or control liquid is passed through a measuring and memory cell 21 provided, the z. B. on the nozzle housing 6 provided or formed in this housing. The measuring and storage cell 21 exists according to the 8th from a cylinder 22 in which axially displaceable a piston 23 is arranged. This limited in the cylinder 22 a measuring and storage chamber 24 with a defined volume. The maximum possible distance between the piston 23 and the closed cylinder end opposite this piston 22.1 and thus also the given volume of the measuring and storage space 24 are by a piston stop 25 adjustable, for example, with an external thread in an internal thread on the open side of the cylinder 22 intervenes. By spring means 26 For example, by one or more mechanical springs or by a pressurization is the piston 23 for an axial displacement in the direction of the closed cylinder end 22.1 in the sense of a reduction of the volume of the measuring and storage chamber 24 biased. At the cylinder end 22.1 is the measuring and storage chamber 24 over a canal 27 with a control valve assembly 28 connected, which controlled with the orbital motion of the crank wheel 10 during each return stroke the measuring and storage chamber 24 the measuring and storage cell 21 over a canal 29 with a source 30 which provides the inspection and / or control fluid under pressure, so that during each return stroke the measuring and storage cell 21 or their measuring and storage chamber 24 with one through the piston stop 25 defined volume of inspection and / or control fluid is filled ( 4 and 5 ). When initiating the working stroke is by the control valve assembly 28 the channel 29 to the source 30 interrupted and a channel 27 between the measuring and storage chamber 24 and the injection channel 8th produced so that with the help of spring means 26 the inspection and / or control liquid from the measuring and storage chamber 24 over the nozzle tube 7 in the respective bottle 2 is emptied ( 6 and 7 ).

In the illustrated embodiment, the control valve assembly 28 formed by that the crankshaft 11 with an axial channel 11.1 running over the channel 27 constantly with the measuring and storage chamber 24 communicates and a tax opening 11.2 that forms the channel during the return stroke 11.1 with the channel 29 and during the working stroke with the channel 31 combines.

The invention has been described above by means of an embodiment. It is understood that numerous changes and modifications are possible without thereby departing from the inventive idea underlying the invention. So it is possible, for example, instead of the measuring and memory cell 21 also other measuring devices or means for the precisely metered introduction of the inspection or control liquid into the containers or bottles 2 provide, for example, generally measuring chambers or measuring chambers, during the Rückhubes charged and emptied during the working stroke for introducing the inspection and / or control liquid by a piston actuated by a drive and / or pressure and / or spring loaded.

Above, it was assumed that the bottles 2 on the container carrier 4 standing up free at the device 1 be moved past and the movement of the injector 5 or the crankshaft wheel is started from the starting position in each case when a bottle 2 the device 1 or has reached this starting position. Basically there is also the possibility of the bottles 2 at least in the area of the device 1 for example through the bottles 2 clamping driver or driver element so as to guide the movement of each bottle 2 at least in the area of the device 1 through this driver purely mechanically with the movement of the injector 5 is synchronized.

1

contraption

2

bottle

2.1

bottle mouth

3

inspection device

4

Container conveyor for the bottles 2

5

injection

6

nozzle housing

7

nozzle tube

8th

Injection channel

9

nozzle carrier

10

crank

11

crankshaft

12

drive for crank wheel

13

control electronics

14

sensors

15

bearing element

16

machine frame

17

doubly parallelogram

18

parallelogram

19

coupling element

20

parallelogram

21

measurement and memory cell

22

cylinder

22.1

closed cylinder end

23

piston

24

measurement and storage chamber

25

piston stop

26

spring means

27

channel

28

Control valve assembly

29

channel

30

source for under Pressure inspection and / or control fluid

31

channel

A

Direction of transport of the container transporter 4

B

Direction of rotation of the crank wheel 10

FA

axis the bottles

THERE

nozzle axis

KA

axis of the crank wheel

Claims (17)

Device for introducing an inspection and / or control liquid into bottles or similar containers ( 2 ), with at least one injection nozzle ( 5 ) with a discharge opening, via which the inspection and / or control liquid, each with a predetermined volume into the below the injection nozzle ( 5 ) on a container carrier ( 4 ) passing containers ( 2 ) through the container openings ( 2.1 ), wherein the at least one injection nozzle ( 5 ) on a nozzle transport element ( 10 ) is provided, which by a drive ( 12 ) is drivable such that the at least one injection nozzle ( 5 ) during a working stroke of the movement of the nozzle transport element ( 10 ) for introducing the inspection and / or control liquid with the respective container ( 2 ), characterized in that the at least one injection nozzle ( 5 ) is movable such that it during the working stroke with a at least the discharge opening portion having at the beginning of the working stroke in the respective container ( 2 ) by the winding ( 2.1 ) and at the end of the working stroke from the container ( 2 ) emerges again, the injection nozzle ( 5 ) the container ( 2 ), and the axis of the at least one injection nozzle ( 5 ) is always oriented in the vertical direction. Apparatus according to claim 1, characterized in that the container conveyor ( 4 ) a straight-line transport route for the containers ( 2 ). Apparatus according to claim 1 or 2, characterized in that the container conveyor ( 4 ) a horizontal transport route for the containers ( 2 ). Device according to one of the preceding claims, characterized in that the discharge opening through a nozzle tube ( 7 ) is formed. Device according to one of the preceding claims, characterized in that the at least one injection nozzle ( 5 ) or its discharge opening through the nozzle transport element ( 10 ) are moved on a movement path forming the working stroke and a return stroke. Apparatus according to claim 5, characterized in that the movement path in a to the plane of the container transporter ( 4 ) vertical plane parallel to the conveying direction (A) of the container transporter ( 4 ) lies. Device according to one of the preceding claims, characterized in that the nozzle transport element ( 10 ) by the drive ( 12 ) can be driven in rotation about an axis which is horizontal or perpendicular to the conveying direction (A) of the container transporter ( 4 ) is oriented. Device according to one of the preceding claims, characterized in that the nozzle transport element ( 10 ) one about a crank axis (KA) circumferentially drivable crank with a crankshaft ( 11 ), which is oriented with its axis parallel to the crank axis (KA) oriented radially offset therefrom, and that the at least one injection nozzle ( 5 ) or a nozzle carrier carrying this injection nozzle ( 9 ) over the crankshaft ( 11 ) are mounted on the crank. Apparatus according to claim 7 or 8, characterized by a guide, for example by a double-parallelogram ( 17 ), between the injection nozzle ( 5 ) or the nozzle carrier ( 9 ) and a machine or bearing element ( 15 ) to maintain the orientation of the nozzle axis (DA) with rotating crank. Apparatus according to claim any of claims 7-9, characterized in that the crank of a about the crank axis (KA) circumferentially driven crank wheel ( 10 ) with the eccentric on the crank wheel ( 10 ) provided crankshaft ( 11 ) is formed. Device according to one of the preceding claims, characterized by a control device ( 13 ) for controlling the drive ( 12 ) such that the nozzle transport element ( 10 ) starts from a start position forming the beginning of the working stroke whenever the container transport ( 4 ) a container ( 2 ) at least partially below the injection nozzle located in the starting position ( 5 ) has arrived. Device according to one of the preceding claims, characterized in that the axis of the bottle (FA) and the nozzle axis (DA) during the immersion of at least the injection nozzle ( 5 ) move in the transport direction relative to each other. Apparatus according to claim 12, characterized in that the axis of the bottle (FA) the nozzle axis (DA) during immersion of at least the injection nozzle ( 5 ) overhauled. Device according to one of the preceding claims, characterized by at least one measurement and memory cell ( 21 ) with at least one measuring and storage chamber ( 24 ) with a defined volume for receiving the inspection and / or control liquid and for delivering this volume via the at least one injection nozzle ( 5 ) during the working stroke. Device according to one of the preceding claims, characterized in that the volume of the at least one measuring and storage chamber ( 24 ) is adjustable. Device according to one of the preceding claims, characterized in that the at least one measuring and storage chamber ( 24 ) is spring loaded and / or pressure loaded to deliver the inspection and / or control liquid. Device according to one of the preceding claims, characterized by a control valve arrangement ( 28 ) for filling the at least one measuring and storage chamber ( 24 ) during the return stroke with the inspection and / or control liquid or for the delivery of the inspection and / or control liquid during the working stroke via the at least one injection nozzle ( 5 ).