DE1049064B - Method and device for the production of strips according to Schellbach on tube-like measuring devices made of glass - Google Patents

Description

GERMAN

kl 321

INTERNAT. KL. C 03 C

PATENT OFFICE

C 0 3Cj

EXPLAINING PUBLICATION 1049 064

F 24310 IVc / 32 b

REGISTRATION DAY. NOVEMBER 2, 1957

NOTICE
THE REGISTRATION
AND ISSUE OF THE
4 EXPLANATORY NOTES: JANUARY 22, 1959

The invention relates to a method for producing Schellbach strips on tube-like measuring devices made of glass and to a device used for carrying out the method. Usually, a powder made of enamel paint mixed with an adhesive binder is applied in strip form to the wall of the glass appliance and then burned in for a long time. The stoving temperature is expediently kept as high as possible, but must of course still be sufficiently below the melting or softening point of the appliance glass. In order to facilitate the application of the mixture of colored powder and binding agent to the wall of the glass device, this mixture is often applied to a carrier strip made of paper or the like and then the carrier strip with the colored layer is stuck on the inside of the wall of the glass device. When the enamel paint ^{1 is} subsequently burned in, the carrier strip is charred or burned, and only the actual Schellbach strip remains on the outer wall of the glass appliance.

It is known that the glass device before the application of the later Schell bach strip forming To calibrate and graduate enamel paint and before or after this process by appropriate To make the heating stress-free. In all cases, however, the mixture has so far been applied from Color powder and binding agent in strip form on the wall of the glass device with or without use a carrier strip by hand. The strip to Schellbach must if it serve its purpose should, exactly parallel to the longitudinal axis of the glass device, i.e. perpendicular to the later in the glass device borrowed fluid level to be read. This is how it does not require any further explanation Corresponding application of the mixture of color powder and binder, the more difficult the larger Length of the glass vessel. Even when using the aforementioned carrier strip and other aids So far it has not been possible to make glasses of greater length standard and without being unacceptable to provide high rejects by machine with a precisely fitting strip according to Schellbach.

The invention aims to eliminate these deficiencies in a simple and safe manner. She has In particular, the aim was to create a way of using the mixture of enamel paint and binding agent to be able to apply by machine to a tube-like measuring device made of glass of any length that After this mixture has been burned in, the finished Schellbach strip is exactly the right position occupies. To solve this problem, the invention proposes the following measures. First will Method and device for

Manufacture of strips according to Schellbach

on tube-like measuring instruments made of glass

Registrant: Curt Firn, Essen, Halbe Höhe 20

IO

Curt Firn, Essen, has been named as the inventor

that which has been made tension-free by previous heating and has cooled down sufficiently and preferably

wise l> already calibrated and graduated glass device clamped at one end, namely with its longitudinal axis precisely aligned in a given (management level). Then the mixture of colored powder and binding agent! with the help of one of the

from the clamping point to the free end of the glass device moving mechanically driven pressure piece in strip form on the outer wall of the glass device applied by machine. At the respective point of action of the pressure piece

the glass device is supported by a counter-bearing that is coupled to the pressure piece and migrates outwards. The pressure piece expediently lies with a narrow surface on the outer wall of the glass device on, the curvatures of this support

surface and the device roughly correspond to each other. The one coupled with the pressure piece and emigrating Counter bearing, for example a roller with a concave or l> bilateral towards the center conically drawn-in outer surface, is expedient

Often arranged in a height-adjustable manner within the management level, in order to make tube-like glass devices very different Coat the outside diameter with the aforementioned mixture of color powder and binder to be able to.

The method according to the invention is particularly simple if one uses the mixture of colored powder and binders in a known manner beforehand on a carrier strip of paper or the like. brings up. The carrier strip can then subsequently

with the color layer on the inside with the help of the pressure piece comfortably on the outer wall of the glass device be glued on. But you can also do without such a carrier strip by, for example the mixture in question from a corresponding

with the nozzle running underneath the contact surface of the Pressure piece is injected and applied in this way to the outer wall of the glass device. In In all cases this mixture is applied to the outer wall of the tubular glass device from the clamping point to the free end of the device, i.e. one after the other over the entire length of the device constant pressure. And with the help of the emigrating Druchstück and that coupled with it Counter-support exactly within the management level in which the longitudinal axis of the glass device is whose clamping was previously aligned while the glass device remains at rest. The inventive Process thus ensures a machine application of the mixture of enamel paint and Binder on the outer wall of tube-like measuring devices made of glass with simple means in the Way that after the mixture has burned in, one is exactly parallel to the longitudinal axis of the glass appliance running stripes according to Schellbach.

In the drawing is a device serving to carry out the method according to the invention illustrated for example, namely shows

1 shows a front view of the device and

Fig. 2 in -enlarged ^ Maßstalje a section according to Limie H-TT of Fig. 1.

On a side wall of the frame 1 of a stationary device on a workbench 2 or the like there is a clamping piece 3 into which a tubular Measuring device 4 off.'Glass is to be clamped at one end. That by previous heating and careful cooling again, the tension-free glass device 4 can preferably already be calibrated and be a graduate. When clamping in the clamping piece 3, the glass device 4 must mau with its longitudinal axis Align in a predetermined plane 5 (Fig. 2) going through the clamping piece 3. To this Purpose can be on the opposite side of the frame 1 from the clamping piece 3 in the guide plane 5 horizontal line mark or the like. Be provided. In addition, the alignment of the glass device 4 when clamping by a pair of symmetrically to the guide plane 5 arranged and pivotable Leitsohienen 6 mounted on the frame 1, which are furthermore suitable, each have a carrier strip 7 od paper Binders is covered.

A pressure piece 8 with a knife-like pointed narrow surface 8a resting on the outer wall of the clamped glass device 4, the curvature of which corresponds in eUva to the curvature of the glass device 4, runs between the guide rails 6. The pressure piece 8 is mounted pivotably on the arm 9 a of a carriage 9 which slides on a guide rail or rod 10. A further slide 12 is coupled to the slide 9 via a linkage 11, which slide is guided on rods or rails 13 and has an arm 12 a. On the slide arm 12 a, the holder 14 of a roller 15 with a circumferential surface that is conically drawn in conically towards the center in the guide plane 5 is arranged in a height-adjustable manner, the roller 15 serving as a counter-bearing for the pressure piece 8.

With the aid of a drive (not shown) that can be reversed in a suitable manner, one of the carriages is located 9 and 12 in a reciprocating motion on its associated guide rail or rod to move and takes the other slide with the linkage 11. When the Carriage 9 and 12 move from left to right, the pressure piece 8 and the counter bearing coupled to it 15 together in the management level 5 from the clamping point of the glass device 4 to its free End, with the pressure piece 8 lying on the Leitsohienen 6 carrier strip 7 with the color layer glued on the inside over the entire length of the glass device 4 on its outer wall will.

ίο Are the pressure piece 8 and the counter bearing 15, through which the glass device 4 is supported when the carrier strip 7 is glued to the respective point of action of the pressure piece, in the right When the end position is reached, the slide drive stops automatically and is reversed. before after or during the return of the carriage 9 and 12 to the left starting position Loosen the clamping piece 3 and pull the glass device 4, which has been glued to the carrier strip 7, out of the device, Clamp a new glass appliance in the clamping piece 3 and align it in the guide level 5 as well as a further carrier strip 7 on the guard rails 6. This is a working cycle of the Device finished and a new one can begin.

On the left side of the frame 1 there is a stop 16, onto which a nose 9b seated on the carriage arm 9a runs up when the carriage 9 retreats and which can be designed as a limit and reversing switch for the carriage drive.

As indicated in Fig. 2, the guide rails 6 can be connected to the carriage 9 and this slide on a rail 10 'pivoted on the frame 1. Are the pressure piece 8 and the arrived with this coupled counter bearing 15 in the right end position, so are automatically under Reversing the carriage drive via the rail 10 'of the carriage 9, the pressure piece 8 and the guide rails 6 pivoted from the position shown in full in the dash-dotted line. The automatic one relies on it Decline in the aforementioned device parts, during which in the manner described above The clamped glass device 4 is replaced by a new one and a fresh carrier strip 7 is placed on the conductor rails 6 can be placed.

Claims (5)

Patent claims: 1. Method for producing strips according to Schellbach on tube-like measuring devices Glass in which a powder of enamel paint mixed with an adhesive binder in the form of strips is applied to the wall of the glass device and then burned in for a long time, characterized in that the stressed by previous heating and sufficiently cooled and preferably already calibrated and graduated glass device with his Longitudinal axis in a predetermined plane (guide plane) clamped aligned at one end and the mixture of color powder and binder with the help of one in the management level From the clamping point to the free end of the glass device moving pressure piece in strip form is applied to the outer wall of the glass device by machine, the glass device on the respective point of action of the pressure piece by a joint and coupled with this migrating counter-bearing is supported. 2. The method according to claim 1, characterized in that a carrier strip made of paper or the like. in a manner known per se with the mixture Paint powder and binder coated and then with the paint layer inside is glued through the pressure piece on the outer wall of the glass device. 3. Apparatus of the method according to claim 1 and 2, characterized durdh a pair of symmetrical to the guide plane (5) arranged, intended for receiving a carrier strip (7) Leitschiienen (6), one between the Leitschiienen on the outer wall of a clamped glass device (4) with a narrow support surface (8a) sliding pressure piece (8) and a counter-bearing (15) coupled to this, as well as slide-like Carrier (9 and 12) for the pressure piece and the counter bearing, which move together these two parts serve in the management level and of which at least one support section by means of a reversible drive in a (reciprocating movement parallel to the Management level is to be transferred. 4. Apparatus nadh claim 3, characterized in that the holder (14) of the example designed as a role counter-bearing (15) adjustable in height in its guide plane (5) a carrier slide (12) is arranged, which in turn with a the pressure piece (8) carrying The carriage (9) is in medhanisdher connection via a linkage (11) or the like. 5. Device according to one of claims 3 and 4, characterized in that the slide rail (10 ') of the slide carrying the pressure piece (8) and preferably also the guide rails (6) (9) is mounted so pivotably on the device frame (1) that the pressure piece after Reaching its end position away from the clamping point of the glass device (4) together with the Leitbdhienen (6) lifted automatically from the clamped glass device (4) and after moving back into the initial position is lowered back into its working position. 1 sheet of drawings