DE1813291A1 - Method and device for polishing glass objects in an acid bath - Google Patents

Description

'' "" "'IIIHHi | PHIl I"

Dr. müller-bori =: dipl.-ing. gralfs dr. manitz dr. devil

PATENT LAWYERS 1 R 1 °? Q 1

Braunschweig, December 5, 1968 Our sign ^ 836 - Al / Liβ

Stevens and Williams Limited, Royal Brierley Crystal Glassworks, North Street, Brierley Hill, Staffordshire, England

Priority: Great Britain from December 15, 196? No.; 572 ^ 0/6?

Method and device for polishing glass objects

in an acid bath

The invention relates to a method and an apparatus for polishing glass objects. For the past fifty years, this has been the case with hand and machine cut glassware final polishing was carried out by immersion in an acid bath consisting of a mixture of sulfuric and hydrofluoric acid. In in practice this was done by hand immersion, even if in the last few years a partial mechanization was achieved by putting the objects in racks or cages of different kinds Shapes and sizes were laid out, which were then dipped into the acid bath by means of a crane and, if necessary, added were moved. A disadvantage of this method is that the glasses easily get marks through the frame or received in other // ice notches.

909842/1046

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According to the invention a method for polishing glass objects by immersion in an acid bath is characterized in that the objects are individually placed in separate, openly accessible containers or compartments of a susceptor, the container or containers moving in a circular path through the bath can carry about a substantially horizontal axis and ± c6 "xmen disposed so aa.it> the articles only during part of the movement are immersed, and that the articles after. inserting into the corresponding compartments at a disengagement are prevented from the containers, so that they are normally held in it when moving v-.es container, but can be discharged semi-automatically by gravity.

A device according to the invention for polishing glass by immersion in an acid bath contained in an immersion tank has a cage mounted on three axes about a horizontal axis, which cage is arranged relative to the mirror of the bath in such a way that the cage is in the substantially no longer immersed as ois half, and an opposite each other on the bottom of the cage, to the extent to which the distance .offen access pockets are arranged for receiving individual to be polished objects Jk provided cover, which during rotation of the cage normally prevents the objects from falling out of the pockets as a result of the action of gravity.

The invention is illustrated in the accompanying drawing, for example and is explained in detail below.

Pig. 1 shows a view of a glass polishing machine.

9-842 / 104 6 BATHROOM OWQINAL

Fig. 2 is a plan view of this plant, the three jaders which allow a three-stage process, a fourth iProc-censtufe we ^ elaHse ^ has been.

Fig. 3 is a front view of the system, with the smoke evacuator of the first bath neither in Fig. 2 noci. in Fi ;;. 5 to recognize is.

x ^v ig. -t is a vertical .Sci.niut through a xjifij or a frame in which "Yemens Eü.ncie einfoIe = Tt; become.

Fig. 3 is a section on the line V- ¹ / Fi ;; 4 du.cn a single .'rag; esteli, una lä ^ t lie Tasc:. ^ ·. Eggs compartments for uie ae- "enstäiide ei" ne :: ne ::.

Fig. 6 shows; enlarges one. cut, in each a ..ai-ne and a Käfisj; to recognize s'nd.

Fig. 7 is an explanatory section showing the daa and the aai'i.

IUe acid polishing riontu - ^, ·, ^ ie in the drawing darcesce.It is, besceht from arei rags, which <each one eiio-n each a: läi'i: c is rotatably disposed, the Ad in ^ ^ c ^ c i denotes each, · c i; x its umfau ;; lüit c'oen open 2aschen or compartments

909842/104

is provided that can accommodate glass objects to be polished, these objects usually Glasses are.

In the embodiment shown, each cage has four processing tracks, which are represented by four support frames, which are denoted by 3>'·!-> 5 and 6. It can be seen that the various support frames have different widths, so that objects of different sizes can be included. A hood ~ j> Q is arranged above the acid bath.

The cage is arranged so that it revolves around a horizontal ' Axis 7 can drenen, which is in a plane above the upper edge the v'anne lies so that only part of the circumference of the cage and zv / ar is substantially not less than half, immersed in the acid bath with the cage rotating. In practice Satisfactory results have been obtained when the mirror of the bathroom is arranged to be slightly less than that Half of the cage is submerged, since this causes gravity as a factor to cause the objects to be disrupted and the objects to be carried out can effect from the individual pockets, what these are in themselves one after the other approach the horizontal. The fact that the upper part of the cage is retained makes it easy to polish objects to be placed one after the other in the individual pockets on a charging station, which is shown in FIG. 1 is denoted by B, the insertion then takes place when the respective pockets are available to the operator approach.

Removing the objects can be done in a similar way to obeix or the transfer from one lane to the corresponding lane in the

909842/1046 BADORKWML

Cage of the next bath can be carried out semi-automatically. The pockets 10, uie around the perimeter of the individual support frames are evenly spaced around, sin./ with under one Angle arranged side walls 11 are provided so that the daw Level of these walls, when each pocket reaches the horizontal, i.e. through the horizontal plane X-X containing the axis of rotation goes, each includes an angle Y (Fig. 4) with the horizontal, so that the object lying in the pocket tends to roll down the underlying side wall, whereby the objects at point A (! Fig. 7) by gravity be carried out. It can be seen that the bottom of each pocket is rounded and has the shape indicated at 16, so that movements of the object within the pocket take place relatively smoothly when rotating the cage.

In order to ensure that the acid or other liquid in the bath has direct access to the object inside the pocket, both end walls or partition walls 17 of the individual support frames are perforated ^{as indicated at 17 l.} The same _r -, ilt for uie side walls 11, as indicated at 18th

In order to prevent the objects from falling out when the cage rotates in the direction shown, ie clockwise, and to hold the objects in the individual pockets 10 even when they are upside down, a semicircular cover is also perforated. provided ^ 1, each NaCN uer speed and the formation of the pockets (Fig.1 by 7) ^o f the iieladeseite Dis a height in the Ivane the direction indicated at 13 extends horizontally, so that ·.! ensures aai; The objects contained in the pockets cannot fall out until the angular position of a side wall forms a positive angle with the outside horizontal. However, it is clear

»" «/, Cue a *

that when successive pockets reverse their movement from an upward to a downward movement as they go around the cage, the objects during part of the downward movement onto the one below
Roll the side wall until the pocket fits into the cover 12
moved in and the object now rests on the cover, while the vandunjen of the pocket now act as a kind of shovel or wing until the pocket rises again and the object rests on the lower side wall again.

On the loading side of the "v'anne 1, the cover 12 can be up to
reach a height that is approximately above the horizontal plane running through the axis of rotation of the cage, depending on the size of the cage.

In order to improve the strength or rigidity of a cover 12, the like: .ie / <anne from iOinvcscoff, e.g. polythene higher
Served can be manufactured is. ..ie AbaecKun ,. stiffened by tilting 20. Lit 35 a diving exposure is referred to, while
with ΌΊ spray tubes are drawn, jie axes fax · each cage
sin - .., individually stored in LagerböCxten which are angebracfit on consoles ~ yo, which sit on the form plate 26 aes frame.

Discharging or releasing. »Glasses, drinking glasses,
small vases or other round objects - from the pockets in the support frame, through which the cages are formed, takes place automatically. As soon as the bags are consecutively
approach the discharge point A, whereby the angular position of the v / anding 11 is still such, aaii the vvand forms an angle with the horizontal., the object will slide down on the inclined surface due to the force of gravity or in the case of a round glass.

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BATH ORIGINAL

roll under. Furthermore, will be exposed because of the Eelativdrehbewe ^ ung between the cage and cover the object at the circumference of a circumferential force, with the result DAU ex ¹ counterclockwise rotates when now no haitekraft applied to the object that holds the article in the pocket, it will be get free even by rolling it out of the bag.

In order to be able to control the length of stay in the pockets, precursors are made to extend the cover to a height above the horizontal. This is iiirweiterun * Anke in Aanne 1 by a Schx 21 bogeni'örmi _(!. EIA cross-section shown, which is during the .behandlung the rain stands im'Bad as shown in Figure 1 arranged such they DAT an extension of the Cover ^ 1i £. Forms. "The dimensions of the barrier are chosen so that the height is sufficient to prevent the objects from rolling out of the pockets, before they approach the horizontal. The barrier 2Λ can be adjusted at the edges of Arm 2.2 attached, which can swing around a saddle point that coincides with the axis of rotation of the cage ken intended for each individual year v / earth: ..

In the arrangement shown for stage III; one arm or are both arms 22 tapping with a stop 2 ;? provided that in buckets arc-shaped slot a ~ r in a. latte 2>, who sits on a platform, which part of the ic-üaiaens 2? Educates. I, Iit ae.:, Anacnlabzapfen c'ö works together on one side an ivlimce ^ 3, so that ^ the jreig

9 09842/1046

barrier 21 or the barrier can be held in a raised position above that height at which the bags of which eiae at 31 ⁱⁿ Fig. 1 it is indicated that reach Austragestelle, and in which the articles are automatically discharged. Similar arrangements are provided for Levels I and II.

Ss precautions may be taken to break the barriers at the Activate level I individually, so that different polishing times are selected for the individual lanes of the first cage can. The barriers of the following stages of the system can, however, be operated as a whole, since the times required for washing are not so critical.

It can be seen that the tubs 1 are held in the corresponding frames at different heights, the tubs of stages II and III being arranged increasingly lower than stage I, whereby the counter rods when exiting from the : ·. Level I cage can enter directly into the pockets of the corresponding support frames of the cages of the following levels.

In operation, the equipment is adjusted to ensure that the cages that hold the objects to be polished contained, circulate during the required immersion time in the acid bath.

a) The rotation of the individual cages of the three stages is clockwise, as shown in the drawing;

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b) Objects, e.g. glasses, are placed by hand in the pockets at position B;

c) the glasses are ejected at point A when the Barrier 21 is open because they

1. have the maximum distance from the center of rotation of the cage, i.e. lying on the outside of the pockets,

2. under the influence of the forces f shown in FIG stand and

3. rotate counterclockwise;

d) the glasses are not ejected at point B because

1. at speeds from ό to y rpm there is insufficient time to roll from the position at the bottom of the pocket, where you are closest to the center of rotation, to the hand. The extension of the cage cover at point B enables the glasses to be held in the pockets when the cage is standing or j is rotating at a lower speed.

From this description it can be seen that the work on a minimum can be saved, since the operator easily The items can be placed in the pockets of the individual support frames of the aer stage 1 cage. After completing the immersion period can do the trolleys 3 to 6 by hand or in triplicate or multiple processes are emptied by raising the barrier, so that the objects due to gravity

909842/1046

from the pockets of the stage I to the stage II rinse and rinse from ötufe II to stage III pass in demineralized water. If desired, a fourth stage for drying with hot air can be added will. The drive of the individual cages is not shown, but it is clear that the cages are synchronized by a common one Drive driven at speeds of 3 to 5 rpm can be.

ISi η another advantage resulting from the method and the device according to the invention, is aarin, dar; the glasses during polishing. Point or line contact worn will the. sici ^ constantly change, ./during the time in which A G-Ias can not move freely in the holder while polishing can, the lieaktion z; viscous acid unu. Glass at the points of contact prevented.

90984271046 ORIGINAL BATHROOM

Claims (1)

Patent claims A method for polishing glass objects by immersion in an acid bath, characterized in that: the objects are placed in separate, openly accessible containers or compartments (10) of a receptacle (2); the container or containers moving on a circular shape. en .oahn through the bath around a substantially norizoircale Acüse can execute or can which is angeoru.net so, the articles only during a dais ^ Eils the movement are immersed, and that the articles according to _Λ AEM insertion into compartments uie entsprechenaen on an i'i'eikommeii from aen ^ euäiüeru ^ eLinaert, so that they are normally held in it when the container is moved, but can be carried out automatically by the oc ... verier aft. 2. The method according to claim 1 with aufeiiianaerfol ^ eixueii process steps, characterized by, o.a .: egg :, polishing in one Acid bath and a vase with or oüiie Jroc.i.ei. intended are* 3 · Method according to claim 1 or 2, dadurc :. marked, that the objects are in a circular shape around a horizontal one Axis are forced. Method according to Claim 3, in which objects are polished, which have circular 3-shape or circular parts have, characterized in that the force of gravity together with one in circumferential direction. to the or aie extent of Objects effective thrust, which by a relative Rotary movement of the container and the I device with which ■% 90984 2/10 4 6 the objects are held in the compartments, for producing a rolling movement of the objects in such a hinge is exploited that the objects be expelled from the compartment concerned. . Device for polishing glass by immersion in a Acid bath, which is contained in an immersion tank, characterized by a rotatable about a horizontal axis Cage (2) arranged in this way relative to the mirror of the bathroom is that the cage is essentially not more than up to half immersed, and by one on the underside of the cage, in de; ,, lying on the circumference at a distance from each other, openly accessible pockets for receiving individual objects to be polished are arranged, provided cover (12), which normally causes objects to fall out of their pockets when walking around the cage Prevents exposure to gravity. 6. Apparatus according to claim 5 »characterized in that the cover (12) ends at a level below the horizontal passing through the axis, so that the objects emerge from aeri pockets during the successive movement of the pockets (10) into a position above the cover if this is allowed. 7. / Device according to claim> or 6, which is used for the treatment of ! Objects with; circular outline is used, dadur-ch ! marked, da., the direction of rotation of the cage (2) in such a way is chosen, objects by means of the relative rotational movement a rolling movement is given between the cage and the cover (12); will. . " 90984 2/1046 Device according to one of Claims 5 to 7> characterized in that one cooperating with the cover (12) "movable barrier (21) is provided, which is arranged in such a way that they open the objects within the pockets (10) of the cage (2) holds when the pockets move beyond the cover. Device according to claim 8, characterized in that daii the movable barrier (21), which is preferably represented by a plate with an arcuate cross-section, is mounted steeply so that it can move from ™ can perform a working position in a release celling, in all objects as a result of the influence of the shear force falling out of a pocket. 10 «Device according to claim 9, characterized in that an ivlin ^ envorrichtuiig (30) is provided that the barrier Hold (21) in the release position, ο Device according to one of claims 3 to 11, characterized thereby, then all pockets (10) have side walls (11J, which are in the manner of a V ang-joranet oinu, as well as a curved one. 12. Device according to one of claims y to 10, characterized in that the cage (2) is provided with support frames (3 to 6) with different pocket sizes. 13. Device according to one of claims b to 12, characterized in that the pockets (10) are arranged on the circumference of the cage in cows, and that the v / _; Endings of the cage and the cover are preferably perforated. 90 9842/1046 BAD ORfGfNAL Al) Blank page