DE1071560B - - Google Patents

Description

Federal Republic of Germany

GERMAN

PATENT OFFICE

PATENT LETTER 1071

on ueldag:

Notice the registration and output deb Interpretation:

output deb patent specification:

IIBF J 071 560

kl. 80a 37

internat. kl. B 28c August 20, 1957

December 17, 1959 June 9, 1960

agrees with adsle writing

1 071 560 (V 12972 XVc / 80 a)

The invention relates to a method and a device for cutting off individual moldings the strand of clay emerging from the mouthpiece of a clay press.

The known cutter have a so-called measuring roller, from which a complicated gear the drive of the cutter is controlled based on the distances covered by the mass strand. Despite this facility, the cut was often imprecise, so that size differences in the cut Formings occurred. However, it is known to carry out several cuts with one stroke by using the cutter bar with several cutting wires or the like. But that requires an increase the strand speed and thus brings with it further technical transmission difficulties; because the The cutter bar must run with the strand during the cutting process:

It is also known to tilt cut bricks in groups by a small angle after the moldings are a piece away from the interface, so that they are conveyed further in groups will. However, this device could not have the disadvantages already outlined the .differences as caused by the cut.

Furthermore, it is known that the clay rod is produced by a device that works with the movement of the rod The cutter is first to be divided into larger length pieces corresponding to a plurality of briquettes. That Long pieces separated from the clay strand are carried on by an endless belt. At the end of On the conveyor belt, the piece of rope is pushed through the cutting wires by means of a punch.

The invention has set itself the task of maintaining the dimensional accuracy of the moldings with increased To achieve working speed.

According to the invention this is achieved in that the emerging from the mouthpiece of a clay press Clay strand from a cutter that works depending on the strand movement initially into larger, longitudinal pieces corresponding to a plurality of briquettes and these also from a second cutter are divided into briquettes, the cut of the longitudinal pieces taking place on a stationary strand piece. This has the advantage that an exact dimensional accuracy of the moldings even at high working speeds is guaranteed. During the cutting process, the briquettes are pulled apart at drying distances. This loose, interstitial shape enables rapid drying the moldings.

An embodiment of the invention is shown in the drawings, on the basis of which the new method and preparation for cutting off individual moldings

from the strand of clay emerging from the mouthpiece of a clay press

Patented for: VEB-KEMA ceramic machinery, Görlitz

Kurt Franz, Görlitz, has been named as the inventor

The method and apparatus is explained below.

Fig. 1 shows the double cutter in a side view, partially in section;

Fig. 2 is a plan view of Fig. 1 and

Fig. 3 is an end view with partial cross-section, on the line CD of Fig. 2.

The usual roller table 3 connects to the mouthpiece 1 of the extruder 2 , above and behind which the double cutter 4, 5 is arranged. The cutting table 6 of the second cutter 5 is preceded by a transverse conveyor 7 , which is designed as an endless belt.

In the frame 16 of the double cutter 4, 5 a carriage carriage on rollers 18 can be displaced in running rails 19. The slide carriage 17 forms, with the existing from the carrying strips 20 slide table, the run-up surface for the emerging from the press die 1 clay column 21. The support strips have at the end stops 22. The resulted from the strand 21 driving the sled carriage 17 wircl in a suitable known manner to the shaft 23 transmitted which at the appropriate times. a clutch I arranged in the gear box 24 to drive the strand cutter 4 is actuated. The cutter 4 separates a larger longitudinal piece, corresponding to a plurality of bricks, from the strand 21 .

The rails 19 of the carriage 17 rest on eccentrics 26 which. are rotatably mounted in the cutter frame 16 and also receive their drive from the gear box 24. By appropriate rotation of the eccentric 26 , the carriage 17 can be raised and lowered. The rotation of the eccentric 26 takes place by means of a rack 27 attached to the carriage 17 , into which a

009 52w153

Claims (10)

I on the gear shaft 28 seated gear 29 engages. The shaft 28 carries the double clutch II, which can be engaged and disengaged. Two rods 25 are attached to the carriage 17, which serve to hold further stone carriers 30. The latter can be pulled apart on the rods 25, so that 30 spaces can be formed between the individual stone supports. The end of the stone carrier set 30 facing the press mouthpiece 1 has a hook-shaped extension 31. The other end of the carrier set 30 is firmly connected to the front end of the rods 25. The further cutting table 6 seen in the frame 16 of the double cutter 4, 5 is fixed. The cutter 5 assigned to it divides the long strand pieces supplied to it into shorter parts 32 which are the size of individual bricks. The cutter 5 is driven from the gear box 24 via the shaft 33 and the clutch III. The clutches I, II, III built into the gearbox 24 are driven by a motor 90 on a transverse shaft 91, from which the shaft 28 of the double clutch II is driven by the gears 92, 93. Shaft 23 and 33 of clutch I and III are driven by shaft 28 of double clutch II. The transverse conveyor 7 upstream of the cutting table 6 is designed as an endless belt that runs over rollers and has slat-shaped transverse strips 35 for receiving the stone sets 32. It is also driven by the gear box 24 via the conical gear pair 36,37. The clay strand 21 emerging from the mouthpiece 1 of the extruder 2 arrives via the roller table 3 on the slide table 17, 20 of the first cutter 4 ,,. After a short further movement, the clutch I switches on, which actuates the cutter4. The cut piece of string is several brick widths long. In the embodiment described, it comprises eight individual stone widths. After the strand cut, clutch II is switched on by mechanical transmission. As a result, by means of the gear wheel 29, which engages the rack 27 arranged on the carriage 17, a mechanical advance of the carriage 17 takes place independently of the strand movement. The carriage 17 with the strand piece lying on it moves forward faster than the clay strand 21 coming from the press mouthpiece 1, so that the cut strand piece moves away from the strand 21. At the same time, the eccentrics 26 ', which are also driven by the gear 29, the slide carriage 17 is raised somewhat so that the slide table 20 can glcitcn back into the O position; Clutch I is switched off. With the carriage 17, the rods 25 attached to it with the stone carriers 30 arranged thereon have also been moved forward and lifted accordingly. The rods 25 slide into the gaps between the transverse strips 35 of the transverse conveyor 7. Shortly before the end of the displacement of the carriage 17, the rear extension 31 of the stone carrier set 30 hits a stationary stop so that the stone carriers 30 are pulled apart by the subsequent brief further movement of the carriage 17. The individual stones 32 located on them from the previous cut are thus moved apart with the formation of gaps. Simultaneously560, as a result of the further rotation of the eccentric 26, the carriage 17 lowers, so that the stone carriers 30 deposit the stone set 32 on the transverse conveyor 7. The carriage 17 now runs back into its starting position, the clutch II being switched off and the clutch III being switched on. This starts the multi-stone cut caused by the second cutter 5, which divides the new strand piece fed to it into eight individual stones 32, while on the other hand the transverse conveyor 7 is also switched on and advances one step. The space in front of the cut stone set 32 becomes free, so that the game can begin again. Patent claims: 1. A method for cutting off individual stone moldings from the clay strand emerging from the mouthpiece of a clay press, in which the clay strand is first divided into larger longitudinal pieces corresponding to a plurality of moldings by a cutter that works in dependence on the straiig movement, and these are then divided into moldings by a second cutter are, characterized in that the cut of the longitudinal pieces takes place on a stationary piece of string. 2. A method for cutting off individual bricks according to claim 1, characterized in that; that the briquettes are pulled apart to drying distances during the cutting process. 3. Apparatus for carrying out the method according to claim 1, characterized by a double cutter (4, 5) with two interfaces, the first of which consists of a carriage table (17, 20) carried along by the strand movement and the second of which consists of a stationary cutting table (6). 4. Device according to Ansprucli 3, characterized in that the Schlittemvagen (17) can be raised and moved out with its support surface above the plane of its carriage table (20). 5. Apparatus according to claim 3 and 4, characterized in that for actuating the cutter (4, 5) and. of the carriage (17) interconnected clutches (I, II, III) are provided, the first (I) of which is to be switched on by the advancing strand end (21), while the further switching on and off in certain time segments mechanically by the cooperating gear of the clutches is to be triggered. 6. Apparatus according to claim 3 to 5, characterized in that a gear wheel (29) driven independently of the strand movement engages in a rack (27) attached to the carriage (17) and temporarily gives it an additional forward movement that exceeds the strand speed. 7. Apparatus according to claim 3 to 6, characterized in that the rails (19) of the carriage (17) rest on adjustable eccentrics (26). 8. Apparatus according to claim 3 to 7, characterized in that the carriage (17) forward projecting stone carriers (30) are provided which are extendable on their 'support rods (25). 9. \ Orrichtung according to claim 3 to 8, characterized in that each stone carrier set (30) with the front end on its support rod (25) is attached and at the rear loose end one cooperating with a stationary stop Extension (31) carries. 10. Apparatus according to claim 3 to 9, characterized in that the fixed cutting table (6) of the second cutter (5) in recesses penetrating stone support rods (25) are long so that in their advanced position they reach into the path of a cross conveyor (7), between whose slat-shaped members (35) they are to be pushed. Considered publications: German patent specification No. 631 265. 1 sheet of drawings Q SO »12.