WO2007118491A1

WO2007118491A1 - Dosing procedure and dosing apparatus to heat treat glass containers internally

Info

Publication number: WO2007118491A1
Application number: PCT/EP2006/003460
Authority: WO
Inventors: Siegfried Rösler; Peter Rösler
Original assignee: Gerresheimer Essen Gmbh
Priority date: 2006-04-13
Filing date: 2006-04-13
Publication date: 2007-10-25

Abstract

The current invention relates to a procedure that heat treats the inside of a glass container (4) whereby a flowable heat-treating substance (6), in a proportion equal to the size of the glass container to be treated (4), is passed in free flow into the glass container (4) by means of a portion injector (1) through the orifice of the glass container (4m) into the interior of the glass container, whereby the portion injector (1) and a dosing apparatus and systems belonging to the dosing equipment run roughly synchronously for a period of time with the glass container (4) while the heat-treating substance (6) is being injected in order to complete the execution of the procedure as it relates to the invention.

Description

Title: Dosing process and dosing device for internal tempering of glass containers

The present invention relates to a dosing method and dosing device for internal coating of glass containers.

For example, Medicaments or distilled water for years in glass containers, preferably to store bottles made of glass, these glass containers must be made of hydrolytic class 1 glass (class HC 1 of standard ISO 4802 or type I of Ph. Eur. 5.0 [Pharmacopea Europaea Version 5.0 ]), there to no. 3.2.1 or as post-treated glass containers of the so-called class 2 (class HC2 of standard ISO 4802 or type II of Ph. Eur. 5.0).

Since glass of class 1 (HC 1 according to ISO 4802, type I according to Ph. Eur. 5.0 / 3.02.01.00) is very cost-intensive in the production process, the glass containers are made of class 3 glass (HC 3 according to ISO 4802, type III according to Ph. Eur. 5.0 / 3.02.01.00) and treats the inner surface of these containers in order to achieve the values of Class 2 (HC 2 according to ISO 4802, Type II according to Ph. Eur. 5.0 / 3.02.01.00).

The treatment of the inner surface aims at removing the sodium from the glass on the surface, preferably the inner surface of a glass container, and thus lowering the content of cations in order to render it hydrolytically more resistant. There are various methods to perform this so-called internal coating.

For example, ammonium chloride tablets have been used in glassworks since the 1960s for this process. The tablets in the diameter of preferably about 7 mm and preferably a thickness of about 2.5 mm u. 0.15 gr. Weight were previously thrown by hand in the individual about 600 ° C hot glass container, the quenching agent (here the ammonium chloride) then evaporated as a result of the effect of heat and is reflected as a compensation to the surfaces of the interior of the glass container down. For some time, machines, so-called tablet throwers, are used for this purpose. However, with increasing performance of the bottle production machines, even by throwing two tablets per bottle, the error-free internal coating can not always be guaranteed.

The price of these ammonium chloride tablets was and is very high; in 1985 it was about 10 per million kg; a level that is still around aucli heuie still applies. The consumption for about 50 ml infusion bottles is at an average of 150 bottles / min = 300 tablets / min of 0.15 gr. Weight (with 2 tablets per bottle to increase the remuneration security). This corresponds to approximately 64.8 kg / 24 hours. This tablet coating is therefore very expensive, but unfortunately not sure enough, as can not always be guaranteed even with double tablets throw that they actually get through the glass container mouth into the interior of each glass container into it. Complaints and thus additional costs for the glass producer are the result.

This compensation method thus has the disadvantage of very high costs while at the same time not always sufficiently ensured quality.

Ammonium chloride can also be used as a "powder" in order to be able to refurbish even small glass containers with a small inside diameter (including those with small bottle openings) .The hot glass containers are then diverted on the production machine belt to a small flanged belt by means of about a screw conveyor a steady stream of ammonium chloride powder drizzled.

The quality of the inner coating of such glass containers is sufficient, but is at the lower limit. In addition, the production process is associated with a lot of dust or dirt and therefore very difficult to practice.

For the above reasons, therefore, another method of internal coating is applied: The glass containers are placed in a so-called cooling furnace, which is sealed to the environment sealed inside atmosphere with a gas of a tempering agent, which need not be the expensive ammonium chloride, which is required for the tablet form (less expensive tempering agents, such as ammonium sulfate, which is highly hygroscopic, are not suitable for making tablets). The remuneration then turns up the surface of the glass container located in the interior of the cooling furnace down and tempered them in sufficient quality (inside and outside).

In this method, although the use of the expensive ammonium chloride tablets can thus be avoided and a sufficient quality of remuneration can be achieved, it has the disadvantage of being extremely inflexible with regard to the suitable remuneration batch sizes, since the cooling furnace used for this purpose can only be used for glass dishes to be coated, since the tempering agent is reflected everywhere in the interior of the furnace and thus can no longer be used for batches without desired remuneration. However, from an economic point of view, it is therefore necessary to utilize the corresponding capital-intensive furnace solely with container glass racks to be reimbursed. A use of this annealing process thus eliminates for smaller batches. In addition, the method also has the disadvantage of always rewarding the entire glass container and not just its interior.

One method which avoids all the aforementioned disadvantages is not known for decades despite the obvious economic and / or technical disadvantages of all known tempering methods. Rather, the known methods are either expensive, unsafe or inflexible with regard to smaller batches.

Against this background of the prior art, it is an object of the present invention to provide an internal process for glass container and a dosing that avoids the aforementioned disadvantages, thus ensuring a secure internal coating, allows the targeted use of a cost-effective remuneration and is economically viable for smaller batches.

This object is achieved by a method for internal coating of a glass container, in which

portioned a free-flowing remover according to the size of the glass container to be tempered,

a portion of tempering agent thus formed is added to the glass container in free passage by conveying it by means of a portion conveyor through the glass container mouth into the glass container interior, wherein the portion conveyor during the transport of the coating agent in the glass container interior for a while with the glass container in approximately synchronous, preferably synchronously, runs along.

The, preferably temporary, synchronous running of the portion conveyor with the glass container during the transport of the coating agent in the glass container serves to a reliable filling of Veigütuiϊgsiiiiliels in the container. Compared to a filling at a specific location (approximately point-by-point filling), more time is available for the actual filling process by means of the procedure according to the invention, since the filling takes place here, preferably intermittently, in the middle. Thus, a possibly required larger amount of the coating agent reliably, in particular without over the Glasbehältermündungs- edge to the outside to pass over and thus not reaching the glass container interior, be afflicted. As a result of this increased Befüllzuurigkeit when using the present invention to a second (or multiple) for reasons of quality assurance as a precaution otherwise often performed filling the glass container to be tempered with remuneration - such as at a second (or more) dedicated stations) - dispensed with as a rule which leads to considerable savings in the use of remuneration and expenses for the otherwise necessary additional filling stations.

Under a still hot glass container interior is to be understood as one in which the temperature is still so high that the introduction of the remuneration still leads to a remuneration of the glass surface in the glass container interior. In the case of using ammonium sulphate as a tempering agent, the temperature must be such as to cause a reaction whereby the ammonium sulphate reduces the sodium in the glass surface of the container interior, resulting in fewer cations there and thus annealing the glass Ammonium bisulfate and ammonia are formed. Whether such a reaction can proceed in a sufficiently adequate manner for the compensation depends in particular on the temperature of the glass container at the time the compensation agent is introduced into the glass container and the time which is subsequently available for cooling. In the case of introduction at a lower temperature, a longer subsequent cooling period in the case of a higher temperature requires a shorter period of time. The same applies to the possible use of other compensation agents than ammonium sulfate. Particularly good results of the compensation were achieved with ammonium sulfate in a range of about 350 ° C - about 500 ⁰ C, preferably 350 ⁰ C to 500 ⁰ C, for the glass container temperature. Even at higher temperatures by about 600 ° C, preferably at 600 ⁰ C, can be worked with the inventive method with satisfactory results. As a cooling time up to a temperature of about 80 ° C, preferably of 80 ° C, stood in each case a period of about one hour (1 h), preferably one hour available.

However, it is also possible to incorporate the quenching agent, preferably the ammonium sulfate, in the already cooled glass container interior and then, for example in a so-called baking oven, as it is used for fixing bottle imprints, to compensate by reheating. This procedure is also called "post-tempering". The comments made above on the temperature during quenching apply accordingly.

A preferred embodiment of the method for internal coating of a glass container according to the present invention is characterized in that a horizontal conveyor disc or conveyor ring, preferably circular conveyor disc or conveyor ring trained portion conveyor having at least one portion container, during the transport of the coating agent in the glass container characterized For a time synchronous with the glass container runs along that it is rotated and in this case the peripheral speed of the portion container is synchronized with the movement speed of the glass container. The portion containers of such a conveyor and Portionstellers are preferably filled at one point - for example by means of a hopper - preferably from above and emptying into the glass container then takes place in another area, preferably downwards, such as the portion containers of the conveyor plate during his Rotation enter into an area which releases a respective lower opening of the portion containers, for example by a below the conveyor plate lower cover in this area has a recess there and thus releases the lower Portionsbehältnisöffnungen, so that the remuneration contained therein can escape down here , The portion containers themselves can be designed as recesses, preferably as upwardly wider, particularly preferably funnel-shaped, in the conveyor disk or the conveyor ring. Your filling takes place at the receiving point preferably so that the correct filling is ensured here. Preferably, the portioning is carried out by the portion conveyor, here the conveyor disc or the conveyor ring itself, such as the size of the portion containers the right one Portion determined and these portion containers are filled as completely as possible at the receiving point, which is about a continuous filling with simultaneous rotation of the conveyor disc and any stripping - eg over the upper edge of the portion containers protruding residues -, such as a brush on the horizontally rotating conveyor plate touches, can happen. This can also be done in a preferred embodiment by means of a cover ring having an opening in the region of the receiving location. Preferably, the resulting residues are collected and in turn fed to the annealing process. This procedure to make the portioning of the coating agent by the portion conveyor itself is well suited for the horizontal conveyor disc or the horizontal conveyor ring, but is not limited to this embodiment of a portion conveyor.

In a further particularly preferred embodiment of the method according to the invention, the conveyor disc or conveyor ring, during the conveyance of the tempering agent into the glass container, is in synchronism with the glass container for a time in synchronous rotation, but synchronous with its speed also with respect to an initial position of the portion container with an initial position of the glass container in the region of the conveyor disc or the conveyor ring on a - seen in the projection on a surface - on a secant or tangent to the portion conveyor conveyor conveyor, preferably a conveyor belt, is synchronized, so that the Portionsbehältnis on a path in which between portion conveyor and conveyor overlapping or touching portion is guided in about the same position with the glass container. As a secant or tangent, in the sense of the present invention, not only a secant or tangent to a circle is understood here in the strict mathematical sense. Rather, a secant here in the - more generally used sense - represents a line or area that intersects the area of the portion conveyor in the projection surface somewhere. A tangent is therefore here a line or area that touches the area of the portion conveyor in the projection surface somewhere (tangent).

The conveyor, usually a conveyor belt, preferably runs underneath the conveyor disk or the conveyor ring, so that the coating agent in the overlapping or contact area emerges from the portion containers downwards and into the area below the conveyor disk or the conveyor ring glass container can trickle through the mouth, as the respective portion container here above the glass container approximately with its - preferably this approximately tangential or sekanti- ally extending - position is guided along running.

Preferably, the distance between each adjacent portion containers and / or the extent or extent of the area in which the promotion of the remuneration agent in the respective Glasυehälter is made so that the filling of the Vergütungsmitteis in the glass container, preferably approximately or nearly completed before the filling of the next glass container begins. This is recommended, for example, in cases where the distance between two successive glass containers to be tempered varies or may vary. The distance between two adjacent portion containers may preferably be selected so that two or more portion containers are not simultaneously emptied or that two or more portion containers are not simultaneously in the area in which the transport of the tempering agent takes place in the respective glass container. Alternatively or additionally, it is possible to select the dimensions or extent, such as the length, of the region in which the filling of the respective glass container with Vergütunsgmittel, so that alone or in combination with other measures the target is reached or transported, to complete the filling of the tempering agent in the glass container, preferably approximately or nearly, before the filling of the next glass container begins. In this case, for example, a smaller filling area for smaller minimum distances of the glass container to be tempered and a larger area for correspondingly larger minimum distances of the glass container can be selected. Particularly preferably, the selection of the portion container spacing of adjacent portion containers and the choice of the extent or extent of the region in which the filling of the respective glass container takes place with tempering agent take place in a preferably coordinated combination with one another.

Regardless of what was described above, but also in a further combination thereof, it is also possible to introduce the glass containers to be tempered into, preferably approximately, the same spatial distances from each other to the coating. In this case, it is then also preferably possible to carry out a simultaneous - particularly preferably approximately simultaneous or at least partially simultaneous - transport of the tempering agent into two or more glass containers. Also serves the solution of the problem, a metering device for internal remuneration of glass containers with at least one portion conveyor having at least one portion container which moves in the region, preferably below, of the portion conveyor with the respective glass container in about synchronous and while emptied into the glass container.

The dosing device according to the invention can have a portion conveyor configured as a horizontally arranged conveyor disc or conveyor ring with at least one Portionsbehäit- nis, which is rotated and thereby synchronized in terms of its peripheral speed with the speed of the glass container, which is on a conveyor, preferably a conveyor belt, synchronized, and meanwhile it ends in the glass container.

The horizontal configuration of the conveyor disc or of the conveyor ring, ie preferably a conveyor disc or a conveyor ring, which rotates about an axis of rotation which is approximately perpendicular to the ground, makes it possible to control the local area in which the synchronization is to take place. influenced by the choice of the conveyor disc size. If it is necessary to have a large area in which the synchronization is to take place, then one of its horizontal extent tends to be larger, it requires a narrower area to choose a rather smaller conveyor disc. The same applies to the case of using a conveyor ring in a corresponding manner.

Preferably, the metering device according to the present invention is designed so that the conveyor, preferably the conveyor belt on which the glass container (s) is transported or - viewed in projection on a surface - arranged as a secant or tangent to the portion conveyor and the portion container becomes synchronized to the respective glass container to be tempered so that the portion container on a portion of a portion conveyor between conveyor and conveyor, preferably conveyor belt, - in the projection on a surface - intersecting or touching section led approximately midaufend with the position of the glass container and meanwhile in the Glass container is terminated.

In this embodiment, the spatial area in which the synchronization is to take place or takes place, preferably approximately, by the - given in the projection on a surface - overlapping or contact area. The greater the selection of the horizontal extent (preferably the diameter) of the conveyor disc or the conveyor ring, the greater the available overlap or contact area with the conveyor. So if you want to attack a larger amount, so you choose the conveyor disc or the conveyor ring in terms of their or its horizontal extent (preferably with respect to the diameter) and / or the overlap or contact area with the conveyor rather larger, so a longer time to have available for filling, but a smaller amount is to befüuen so the conveyor disc or the conveyor and / or the overlap or contact area can be made smaller with the conveyor.

Preferably, the portion container is disposed on the between portioning conveyor and conveyor, preferably conveyor belt, - in the projection on a surface - overlapping or touching portion above the glass container and located there, approximately in line with this and is meanwhile emptied into the glass container.

By this arrangement, the filling in the synchronization area, preferably within a narrower range lying therein by opening or otherwise emptying the portion container by utilizing gravity by falling of the remuneration means from the portion container into the glass container.

Particularly preferably, between the, located above the glass container portion container and the glass container in - in the projection on a surface seen - overlap or contact area of portion conveyor and conveyor a Einfüllhilfe with an opening upwards and downwards arranged in their respective Spatial region with its opening at the top of a range of movement of a lower opening of the portion container and its opening downwards covering a range of movement of a glass container mouth of the glass container on the conveyor and so exiting from the portion container remuneration endang the trajectory of the lower Collects the opening of the portion container and forces it to re-emerge on the path of movement of the glass container mouth of the glass container.

In this way, the Befünzurisikoigkeit the device according to the invention can be further increased.

The filling aid used here is preferably a cuboid or sheet metal with a cutout, the cutout, in its spatial area, being of the same width as the area of the movement path. web of the lower opening of the portion container and covering the length of its path of movement of the glass container mouth of the glass container on the conveyor. As a recess can be provided about a slot. Also, a trough-shaped filling aid, for example a funnel trough which is also open at the bottom, can be provided as a filling aid.

In a further preferred embodiment of the metering device according to the present invention, the portion conveyor on a driver, which detects a in his area, preferably in - seen in the projection on a surface-Überschneidungs- or contact area with the conveyor, incoming glass container and this in the Portion of the portion conveyor with the portion container moves approximately synchronously, which is a mechanical synchronization option. It can act as a driver about a fork that detects the glass container between their teeth with its open end and moves it in the region of the portion conveyor with the portion container in about synchronous.

Of course, the synchronization can also be done differently than mechanically. Thus, a particularly preferred embodiment of the dosing device according to the present invention is characterized in that a detection means is provided, which detects the arrival of a glass container in the region of the portion conveyor, preferably in the - in the projection on a surface seen - overlap or contact area with the conveyor, particularly preferably below the portion conveyor, detected and as a result of this detection the synchronization is then carried out, preferably electronically controlled or regulated. As a detection means, a light barrier is preferably provided, which detects the arrival of the glass container on a conveyor belt in the region of the portion conveyor. Also, the dosing device according to the invention preferably has a control means, which allows the speed of movement, preferably the peripheral speed of the portion container and / or the conveyor to regulate or control so as to be able to make a synchronization.

Also, for synchronization of the peripheral speed of the horizontal conveyor disc or the conveyor ring with the conveyor, preferably the conveyor belt, a measurement of the speed of movement of the conveyor, preferably the conveyor belt and / or a measurement of the speed of the portion conveyor may be displayed. Flierzu serves Preferably, a measuring device, such as a rotatable encoder or an absolute encoder, which is mounted on each conveyor eg on a drive axle of the conveyor and / or the portion and moves through the rotation and so the corresponding location information and thus - with appropriate timebase and timing - also provides the speed information

In general, the possibility of an electronic synchronization to quote the following: In addition to the long-known mechanical possibility of synchronization of movements, such as positions, especially start, intermediate and end positions and / or speeds of axes, especially machine axes, there is the possibility for some time this electronically (known for example under the name 'electric wave'), in particular to accomplish by a control computer. An outline of the procedure can be found in Rathkey (Rathkey, John; "Jtäulti-Axis Synchronization", March 6, 2005, available in the WorldWideWeb on the Internet at url "part.newmaker.com/asrt_art/123/3/l .html ", there under the web link" JSΛulti-Axis Synchronization "), further illustrations of this technique of electronic coupling or synchronization can be found at Schlenk and Durban (Schlenk, Armin, Durban Frank," The Motion Control Integration ", Computer & Automation, Special Issue 01/2004, Control Guide, pp. 22-26) or Valenzuela and Lorenz (Valenzuela, M. Anibal, Lorenz, Robert D., "Electronic-Une-Shafting Contro / for Paper Machine Dήves", IEEE Transactions on Industry Applications, Vol. 37, Issue 1, January / February 2001, pp. 158-164) with further references There also US Pat. No. 5,659,480 shows a method for the coordinated motion control of multi-axis machines Implementation of such He controls or regulations can be done both by a corresponding control module for motion control, such as described in the above document by Rathkey όK controller of Compumotor or by an appropriate own programming. Expediently, however, for the sake of simplicity, as a rule, such motion control or regulation modules, which are readily available nowadays, will be used, which the market offers the skilled person in many different ways.

Furthermore, the portion conveyor in the metering device according to the invention preferably not only serves to convey the portions into the interior of the glass container, but also, preferably at the same time, also to portion the compensation agent. This can be achieved, for example, by dimensioning the respective portion container to be filled in accordance with the size of the glass container to be tempered and receiving the compensation agent up to its maximum quantity at a receiving point, preferably below a hopper and / or a filling channel, for example a brush or another scraper, more preferably also a cover ring with an opening at the receiving location strips off excess remuneration and preferably collects and / or feeds the process again.

Particularly preferably, the conveyor disc or the conveyor ring in the dosing device according to the invention is designed circular, which is a particularly suitable for rotary operation design. The conveyor disc or the conveyor ring in this case has approximately a plurality of portion containers on its or its circumference or parallel thereto, preferably arranged at equal arc intervals. Particularly preferably, at the same time one of the portion containers is filled at the receiving location and - at least - another portion container ends in the glass container to be tempered.

Although not necessary according to the present invention, which achieves a particularly reliable infestation of glass containers with tempering agent, it is still possible to form by means of dispensers according to the invention an internal coating system of at least two dosing devices according to the invention, whereby these are used in series production in the glass industry Conveyor belt are arranged one behind the other, which can reach approximately in the case of very high quality assurance requirements or very large filling quantities with remuneration for use.

The metering device according to the invention is preferably provided for still hot (about 350 ° C - about 500 ° C, but also up to about 600 ⁰ C) glass container.

With the present invention, a good internal coating is ensured in which immediately after the manufacture of the glass container in the continuous process on the machine belt a precisely metered agent can be added to the container. As already mentioned, the correct and constant addition of the additive can be guaranteed particularly well here for the success of the internal reimbursement method. Apparatus and method according to the present invention constitute an invention which can be used in rough glassworks, with which it is possible to carry out, inter alia, an economical and at the same time economical production of glass containers for small production lots. The preferred use of quenching agent is ammonium sulfate, technically present in crystal form. Ammonium sulphate is not a hazardous substance within the meaning of the German Chemicals Act. The price for this material is z. At about 0.30 € / kg.

With the present invention, a metered amount of remuneration (even small and very small amounts) in free-flowing, about granular state each glass container in the free pass (no contact) are added.

The device according to the invention can be placed on any prepared production line in the case of its execution as a mobile closed unit. The performance of the device (the device) is preferably about 600 bottles per minute. It is also easy to adjust when changing the article: The dosage can be changed easily by simply changing the horizontal conveyor disc or the conveyor ring with new / new portion container (s) and new size.

In the following non-limiting exemplary embodiments will be discussed with reference to the drawings. In this shows:

1 is an illustration of an embodiment of a metering device according to the present invention, here with a circular horizontal conveyor ring as portioning conveyor and other components in section with - for better illustration - pulled apart in the vertical components shown,

1 with a circular horizontal conveyor ring as a portion conveyor and other components in the partial section (right half) seen, now with positively abutting components,

Fig. 3 shows the embodiment of a metering device according to Fig. 1 and 2 with a circular horizontal conveyor ring as a portion conveyor in supervision of the projection on a surface, which also mitbesprochene here FIG. 3 a shows a rectangular (dashed line) enlargement of parts of local essential parts thereof, FIG.

Fig. 4 shows another embodiment of a dosing device for the internal coating of glass containers according to the present invention, where the portion conveyor carrier has seen in the projection on a surface

Fig. 5 is a lower plate according to the embodiment of a dosing device according to FIGS. 1 and 2 seen in plan view from below, and

Fig. 6 is a cover ring 20 according to the embodiment of a dosing device according to FIGS. 1 and 2 considered in plan view from above.

Fig. 1 shows an illustration of an embodiment of a dosing device according to the present invention, seen here with a circular horizontal conveyor ring 1 as a portion conveyor and other components in section with - for better illustration - in the vertical pulled apart shown components.

Due to their nature as a schematic diagram, the size ratios of the components to be seen here do not necessarily coincide with the actual size ratios, which also applies to the other figures shown here. Also, the components in this figure are not shown here in their actual position to each other, but rather - for a better illustration of the circumstances - shown pulled apart in the vertical, i. shown spaced apart. To produce the real conditions, they would - apart from the glass container 4 - thus in the vertical as long as moved towards each other until they abut positively against each other.

The here to be seen dosing device has a portion conveyor 1, which is designed as a circular horizontal conveyor ring with portion containers 2 a, 2 b, in each case in the case of a detected by a detection means 3, here a light barrier, arrival of a glass container 4 on a conveyor belt 11 im Area below the conveyor ring 1 by turning the same a portion container 2 b is emptied into the glass container 4. For this purpose, the portion containers 2 a, 2 b are parallel to the inner circumference of the conveyor ring 1 - preferably at equal intervals - arranged, which at the same time a portion containers 2 a filled at the receiving point 5 and another portion container 2 b in the just to be tempered glass container 4 is emptied. The portion containers 2a, 2b are here introduced as conical downwardly narrowing holes in the conveyor ring 1, wherein they are open both upwards, as well as downwards. The conveyor ring 1 with the the Portionsbehältnisse 2 a, 2 b forming holes is closed down here by a lower plate 21 and upwards by a cover ring 20. The cover ring 20 in this case has an opening 24 in the region of the receiving location 5, so that the compensation agent 6 can enter the respective below-mentioned portion container 2a through the covering ring 20. Likewise, the lower plate 21 has in the region of filling the glass container with remuneration for emptying the respective here portioning container 2b an opening 23 so that here the tempering agent 6 can pass to get into the glass container 4 can.

The here acting as a portion conveyor round horizontal conveyor ring 1 is used here not only the Portionsförderung in the interior of the glass container 4, but even the portioning of the remuneration 6. This is achieved in that the respective portion to be filled container 2a corresponding to the size of the glass container to be tempered 4 is dimensioned and receives at the receiving point 5, preferably below a hopper 7 and / or a filling channel 8, the remuneration means 6 up to its maximum capacity.

The inclusion of the coating agent 6 in the respective portion container 2a at the receiving point 5 is here also limited by the cover 20 just above the height of the upper edge of the conveyor ring 1 and thus according to the filling capacity of the portion container 2a, when the conveyor ring 1 ready for receiving portion container 2a rotates past the receiving point 5 by the lower edge of the cover ring 20 which hereby overclaims possibly too much accumulating compensation means 6 as a result of the rotation 10 of the conveyor ring 1 strips preferably for recycling. The distance between the height of the upper edge of the conveyor ring 1 and the lower edge of the cover ring 20 is preferably selected so that it is smaller than the grain size - about the average grain size, preferably the smallest occurring grain size - of the used remuneration 6 is measured.

Fig. 2 shows the embodiment of a metering device according to Fig. 1 with a circular horizontal conveyor ring 1 as a portion conveyor and other components in the partial section (right half) seen, now with form-fitting abutting components. Again, by the cover ring 20 upwards and the lower plate 21 downwardly limited conveyor ring 1 can be seen, which is fastened with a bolt Ia to an angle element Ib, which in turn is connected via a further bolt Ic with a rotation axis 22, whereby considered in the totality of these elements, here also a horizontal conveyor disc is formed. The axis of rotation 22 is rotated in the direction of rotation 10 and thus conveys the portion containers 2 from the receiving location (not visible here, as located in the left part) towards the area where the filling of the glass container takes place. There, the lower plate 21 has an opening 23, through which the remuneration means from the portion container 2, which is otherwise kept closed down from the lower plate 21, can pass. The distance between the height of the upper edge of the lower plate 21 and the lower edge of the conveyor ring 1 is preferably again chosen so that it is smaller than the grain size - about the average grain size, preferably the smallest occurring grain size - of the used compensation medium 6 is dimensioned so nothing, or at least as little as possible, can intervene here.

Below the lower plate 21 is located in the area where the filling of the respective glass container to be tempered takes place and below the opening 23 a filling aid 12, which has an opening upwards 13 and down 14. It covers in its respective spatial area with its opening to the top 13 toward a region of a movement path of the lower opening of the portion container 2 and with its opening 14 down a portion of a trajectory of a glass container mouth of the respective glass container on a conveyor below (not here to see) and collects the exiting from the portion container 2 tempering endang the trajectory of the lower opening of the portion container 2 and forces it to re-emergence on the trajectory of the glass container mouth of each glass container to be tempered. Here, sheet metal with a recess (mitt upper 13 and lower 14 opening), here a slot as Einfüllhilfe 12, wherein the recess in its spatial range of its width forth a certain range of the movement path of the lower opening of the portion container 2 and of its length covers a certain area of the movement path of the glass container mouth of the glass container on the conveyor.

3 shows the embodiment of a dosing device according to FIGS. 1 and 2 with a circular horizontal conveyor ring 1 as a portion conveyor in supervision of the projection onto a surface, FIG. 3a, which is also discussed here, represents here a rectangular (dashed line) enlargement of the section of essential parts therein. The conveyor 11 in the form of a conveyor belt is here - in projection on the surface seen - on a secant to Portions conveyor 1, here the circular conveyor ring arranged horizontally.

The portion conveyor 1 designed here as a horizontal circular conveyor ring, which has, inter alia, port containers 2c, 2d, 2e, 2f, 2g, runs in synchronism with the glass container 4, 4d, 4f, 4f during the transport of the compensating agent into the respective glass container 4, 4d, 4f to be tempered glass container 4, 4d, 4e, 4f located on the conveyor belt 11, in that it is rotated and in this case the peripheral speed of the respective portion container 2c, 2d, 2e, 2f, 2g at the speed of movement of the glass container 4, 4d, 4e, 4f is synchronized on the conveyor belt 11. Likewise, for this purpose, the conveyor ring 1 is synchronized with respect to an initial position of the portion container 2d to be emptied for compensation with an initial position of the respective glass container 4d to be filled with the compensation agent in the spatial area of the conveyor ring 1. This ensures that the respective portion container 2c, 2d, 2e, 2f, 2g is guided on a path within an overlap region 25 between portion conveyor 1 and conveyor 11 in approximately above the position of the glass container 4 and its mouth 4m and thus running through the compensation means Flinabfallen in the respective glass container 4, 4d, 4e, 4f on the conveyor belt 11 can also get into it.

This can be done for example by means of a detection means (not shown here), such as a light barrier, the arrival of a glass container 4 in the region of the portion conveyor 1, preferably in - in the projection on a surface seen - overlapping 25 with the conveyor 11, here below of the portion conveyor 1, detected. Furthermore, a control means may be provided which allows the speed of movement, preferably the peripheral speed, of the respective portion container 2c, 2d, 2e, 2f, 2g and / or that of the conveyor 11 to be regulated. Also, a measuring device, preferably a rotatable pulse generator or an absolute encoder, can be used to measure the speed of movement of the conveyor 11, here the conveyor belt, and thus the respective glass container 4 and / or the portion of the conveyor 1. The synchronization can then in the already described in the general part of the representation here type using the well-known to those skilled in the art possibilities of electronic synchronization of drives - such as the so-called electronic wave - eg by using appropriate Bewegungssteuerungs- or Control modules (so-called motion controller) take place. For further details, please refer to the general part of the description here.

The function principle of the filling aid 12, seen here as an elongated hole from above, becomes clear here again on the basis of the enlargement according to FIG. 3a. Below the lower plate, in the embodiment discussed here, the present invention is in the region where the filling of the respective one is Here, a sheet metal with a recess, here a slot 12 as such Einfüllhilfe, wherein the recess in its spatial area of its width ago a used to be tempered glass container 4, 4d, 4e, 4f below the opening of the lower plate certain range of a movement path 15 of the lower opening of the portion container 2c, 2d, 2e, 2f, 2g and their length covers a certain range of a movement path 16 of the glass container mouth 4m of the respective glass container 4, 4d, 4e, 4f on the conveyor. The filling aid 12 thus has in the form of the elongated hole each an opening upwards and downwards and covers in the width of the elongated hole upwards the region of the movement path 15 of the lower opening of the respective portion container 2c, 2d, 2e, 2f, 2g and in the longitudinal extent of the elongated hole, the region of the movement path 16 of the glass container mouth 4m of the respective glass container 4, 4d, 4e, 4f, which is located on a below the portion conveyor conveyor (not visible here) from. It collects so from the portion container 2c, 2d, 2e, 2f, 2g exiting compensation endang the trajectory 15 of the lower opening of the portion container 2c, 2d, 2e, 2f, 2g and forces it to re-emergence on the trajectory 16 of the glass container mouth 4m of Glass container 4, 4d, 4e, 4f.

This principle can be further improved by using a funnel-shaped trough open in cross-section upwards and downwards as a filling aid, for example by an upper (wider) opening of the trough the area of the movement path 15 of the lower opening of the portion container 2c, 2d, 2e, 2f, 2g as wide as necessary and the lower (narrower) opening of the trough covering the area of the movement path 16 of the glass container mouth 4m of the glass container 4, 4d, 4e, 4f on the conveyor as long as necessary and so the supply along the movement path 16 for re-exit in the direction of glass container 4, 4d, 4e, 4f spends.

All of the above-described embodiments thus ensure, by way of the present invention, that the tempering agent reaches the glass container mouth 4m and thereby also the glass container interior as safely and completely as possible by providing a certain time span for the filling Zm. Depending on the amount of remuneration required, the corresponding conditions can be adapted to the requirements. For example, the diameter of the conveyor disc or of the conveyor ring 1 can be increased so as to increase the overlap area 25 and thus have more time available for filling. The same applies to the upper opening of the filling aid 12: If this - widened in the embodiment of the trough - widened, so also extends the available filling time; Consequently, a larger amount of tempering agent can be safely introduced into the glass container interior space, which means that even larger glass containers 4, 4d, 4e, 4f can be safely coated according to the invention without the need for a plurality of metering devices in succession. In this connection, it should be pointed out that it is advantageous for the portion conveyor 1, if it assumes larger dimensions, such as large diameters in the case of its design as a conveyor disc or conveyor ring, to be a moving part with a large mass in a light metal, preferably aluminum or titanium. To avoid unbalance problems in case of higher speeds possible.

Fig. 4 shows a further embodiment of a dosing device for internal coating of glass containers 4 according to the present invention, where the portion conveyor 1 has entrainment 17, the one in their respective area, - seen here in the projection on a surface - overlap or contact area Detected 25 with the conveyor 1, incoming respective glass container 4 and this moves in the region of the portion conveyor 1 with the respective portion container 2 in about synchronously. Here acts as a driver 17 each have a fork which detects the respective glass container 4 between its prongs 19 with its open end 18 and this moves in the region of the portion conveyor 1 with the portion container 2 approximately synchronously. If the glass container still has a high temperature in this region, it is preferable to use a heat-resistant material, such as a ceramic or a heat-resistant metal, such as tungsten, as the fork. 2O

Fig. 5 shows a lower plate 21 according to the embodiment of a metering device according to FIGS. 1 and 2 seen in plan view from below, in the region where the filling of the respective glass container to be tempered has an opening 23 through which the coating agent in the direction Glass container passes out of the portion container.

Fig. 6 shows a cover ring 20 according to the embodiment of a dosing device according to FIGS. 1 and 2 viewed from above, which has an opening 24 in the region of the receiving parts, so that thereby enter the compensation means in the respective below portion container through the cover ring can. Conveniently, this opening 24 is in a separated from the rest of the cover ring, preferably also removable, absteckbares, unscrewable or similarly easily removable part 25 so as to facilitate the maintainability of the dosing device according to the invention at this point.

Claims

claims

1. A method for internal coating of a glass container (4), in which

a pourable remover (6) portioned according to the size of the glass container (4) to be tempered,

a portion of tempering agent (6) thus formed is added to the glass container (4) in free passage by conveying it by means of a portion conveyor (1) through the glass container mouth (4m) into the glass container interior,

the portion conveyor (1) during the transport of the remuneration means (6) in the glass container interior for a while along with the glass container (4) runs approximately synchronously.

2. A method for internal coating of a glass container (4) according to claim 1, characterized in that as horizontal conveyor disc or conveyor ring, preferably circular conveyor disc or conveyor ring, trained portion conveyor (1) having at least one portion container (2), during the transport of the Refining agent (6) in the glass container (4) characterized by a synchronous with the glass container (4) runs along that it is rotated and in this case the peripheral speed of the portion container (2) with the moving speed of the glass container (4) is synchronized.

3. A method for internal coating of a glass container (4) according to claim 2, characterized in that the portion conveyor (1) while the promotion of the remuneration means (6) in the glass container (4) characterized for a while synchronously with the glass container (4), that he rotates and also with respect to an initial position of the portion container (2) with an initial position of the glass container (4) in the region of the portion conveyor (1) on a - seen in the projection on a surface - on a secant or tangent to the portion conveyor (1) lying Conveyor (11), preferably a conveyor belt, is synchronized, so that the portion container (2) on a path within the between portion conveyor (1) and conveyor (11) overlapping or contacting portion (25) approximately to the position of the glass container ( 4) is guided running.

4. A method for internal coating of a glass container (4) according to claim 3, characterized in that the portion container (2) on a path within the between portion conveyor (1) and conveyor (11) overlapping or contacting portion (25) above the glass container ( 4) is guided in an approximately coincident with its position.

5. A method for internal coating of a glass container (4) according to any one of claims 1 to 4, characterized in that the portioning of the remuneration means (6) by the portion conveyor (1) itself.

6. A method for internal coating of a glass container (4) according to any one of claims 1 to 5, characterized in that the tempering agent (6) is present as a granular or powdery, preferably crystalline, ammonium sulfate.

7. A method for internal coating of a glass container (4) according to any one of claims 1 to 6, characterized in that the glass container interior at the time of transport of the Vergütungsmittelportion (6) is already cooled in him and the glass container (4) thereafter again, preferably in a baking oven, is heated so far that it comes to a compensation of the glass container interior.

8. A method for internal coating of a glass container (4) according to any one of claims 1 to 6, characterized in that the glass container interior at the time of transport of the remuneration agent portion (6) is still hot in it.

9. A method for internal coating of a glass container (4) according to claim 8, characterized in that the glass container (4) at the time of transport of the Vergütungsmittelportion (6) in the glass container interior has a temperature of about 600 ° C.

10. A method for internal coating of a glass container (4) according to claim 8, characterized in that the glass container (4) at the time of transport of the remuneration agent portion (6) in the glass container interior has a temperature of about 350 ⁰ C to about 500 ⁰ C.

11. A method for internal coating of a glass container (4) according to any one of claims 1 to 10, characterized in that the metered remuneration means (6) trickles through the glass container mouth into the glass container interior inside.

12. dosing device for internal coating of glass containers (4) with at least one portion conveyor (1) having at least one portion container (2) in the region, preferably below, of the portion conveyor (1) with the respective glass container (4) moves approximately synchronously while emptying into the glass container (4).

13. dosing device for internal coating of glass containers (4) according to claim 12, characterized in that it comprises a conveyor belt or conveyor ring formed as a horizontally arranged portion conveyor (1) with at least one portion container (2) which is rotated and in this case

with respect to its peripheral speed with the speed of the glass container (4), which is on a conveyor (11), preferably a conveyor belt, is synchronized, and while in the glass container (4) is terminated.

14. Dosing device for internal coating of glass containers (4) according to claim 13, characterized in that the conveyor (11), preferably the conveyor belt on which the or the glass container (4) is conveyed or - seen in the projection on a surface - is arranged as a secant or tangent to the portion conveyor (1) and the portion container (2) is synchronized to the respective glass container (4) to be tempered so that

the portion container (2) on a portion of a portion (25) overlapping or touching on a portion between a portion conveyor (1) and conveyor (11), preferably a conveyor belt, projecting onto a surface approximately coinciding with the position of the glass container (4) ) led midaufend while meanwhile in the glass container (4) is terminated.

15. Dosing device for internal coating of glass containers (4) according to claim 14, characterized in that the portion container (2) on the conveyor between portion (1) and conveyor Direction (11), preferably conveyor belt, - in the projection on a surface - overlapping or contacting portion (25) above the glass container (4) is arranged and there, approximately in line with this guided and meanwhile in the glass container (4) is emptied.

16. dosing device for internal coating of glass containers (4) according to claim 15, characterized in that between the, above the glass container (4) located Portionsbehaitnis (Z) and the glass container (4) in - in the projection seen on a surface - overlapping or contact area (25) of portion conveyor (1) and conveyor (11) a filling aid (12) having an opening upwards (13) and down (14) is arranged, which in their respective spatial area with their

Opening upwards (13) towards a region of a movement path (15) of a lower opening of the portion container (2)

and its opening downwards (14) towards a region of a movement path (16) of a glass container mouth (4m) of the glass container (4) on the conveyor (11)

covering and thus the from the portion container (2) exiting compensation means (6) along the movement path (15) of the lower opening of the portion container (2) collects and for re-emergence on the movement path (16) of the glass container mouth (4m) of the glass container (4) forces ,

17. Dosing device for internal coating of glass containers (4) according to claim 16, characterized in that a square or sheet with a recess serves as a filling aid (12), wherein the recess in its spatial area of its width forth the range of movement of the lower opening the portion container and its length covers the region of the path of movement of the glass container mouth of the glass container on the conveyor.

18. dosing device for internal coating of glass containers (4) according to claim 17, characterized in that a slot is provided as a recess.

19. Dosing device for internal coating of glass containers (4) according to claim 16, characterized in that there is provided as a filling aid (12) a trough-shaped filling aid, preferably a hopper trough which is also open at the bottom.

20. Dosing device for internal coating of glass containers (4) according to one of claims 12 to 19, characterized in that the portion conveyor (1) has at least one driver (17), one in its area, preferably in - in the projection on a surface seen overlap or contact area (25) with the conveyor (11), incoming glass container (4) detected and this in the region of the portion conveyor (1) with the portion container (2) moves approximately synchronously.

21. dosing device for internal tempering of glass containers (4) according to claim 20, characterized in that as a driver (17) acts a fork which with its open end (18) the glass container (4) between their teeth (19) and detects this in the Area of the portion feeder (1) with the portion container (2) moved approximately synchronously.

22. Dosing device for internal coating of glass containers (4) according to one of claims 12 to 21, characterized in that a detection means (3) is provided which the arrival of a glass container (4) in the region of the portion conveyor (1), preferably in - in the projection seen on a surface - overlapping or contact area (25) with the conveyor (11), particularly preferably below the portion conveyor (1), detected.

23. Dosing device for internal coating of glass containers (4) according to claim 22, characterized in that as detection means (3) is provided a light barrier, which detects the arrival of the glass container (4) on a conveyor belt (11) in the region of the portion conveyor (1) ,

24. Dosing device for internal coating of glass containers (4) according to one of claims 12 to 23, characterized in that a control means is provided, which allows the movement speed, preferably the peripheral speed of the portion container (2) and / or the conveyor (11) to regulate or control.

25. Dosing device for internal coating of glass containers (4) according to one of claims 13 to 24, characterized in that at least one measuring device, preferably a rotatable pulse generator or an absolute encoder is provided, which allows the speed of movement of the conveyor (11), preferably the conveyor belt, and / or to measure the speed of the portion conveyor (1).

26. Dosing device for internal coating of glass containers (4) according to one of claims 12 to 25, characterized in that the portion conveyor (1) not only the Portionsförderung in the Interior of the glass container (4), but also the portioning of the compensation agent (6) is used.

27. Dosing device for internal coating of glass containers (4) according to claim 26, characterized in that the respective portion to be filled container (2) is sized according to the size of the glass container to be coated (4) and at a receiving point (5), preferably under a Einfülitrichter (7) and / or a Einfüükanai (8), the Vergutungsmittei (6) absorbs up to its maximum capacity.

28. Dosing device for internal coating of glass containers (4) according to any one of claims 13 to 27, characterized in that the conveyor disc or the conveyor ring (1) is designed circular.

29. Dosing device for internal coating of glass containers (4) according to claim 28, characterized in that the conveyor disc or the conveyor ring (1) has a plurality Portionsbehältnisse (2) on its or its circumference or parallel thereto, preferably arranged at equal pitches, such that one of the portion containers (2a) at the receiving point (5) is filled at the same time and another portion container (2b) is emptied into the glass container (4) to be tempered.

30, inner dosing system of at least two dosing devices according to any one of claims 12 to 29, characterized in that the dosing devices are arranged in series in the glass production on the conveyor belt (11) one behind the other.