DD300640A5 - Method for the production of continuous roof tiles using cassettes and cassette for carrying out the method - Google Patents

Abstract

The invention relates, on the one hand, to a process for the production of stranded roof tiles in which the "green" stranded tile moldings cut from the clay strand are spaced (gap) and placed on cassettes (frames) and passed through a dryer and kiln on these cassettes, and on the other hand on a cassette (frame) for receiving strand roof tile moldings for the drying and Brennprozesz and for carrying out the process. It is inventively that each "green" stranded roof tile molding (1) separated from the clay strand is applied directly to a conveyor (3) with at least two conveyor belts (3 a, 3 b, 3 c) running parallel to it, which ( 1) to a cassette (2) weiterfoerdert and deposits on this. The strand tile moldings (1) are moved on a flat inclined path which intersects the cassette trajectory. The cassettes (2) are provided on their upper side with conveyor belt passages (7) open at the top, which include immersion of the molding conveyor (3) in the cassette (2) as well as cassette shifting over the entire length under the cassette-side conveyor belt ends enable. The feeders (3, 4) for the continuous tile blanks (1) and cassettes (2) are speed synchronously driven, and preferably their movement (as well as blank cutting) is controlled as a function of the clay strand movement. Fig. 1

Description

For this 2 pages drawings

Field of application of the invention

The invention relates, on the one hand, to a process for the production of continuous roof tiles in which the "green" strand roof tile moldings cut from the clay strand are spaced (gap) and placed on cassettes (frames) and passed through a dryer and kiln on these cassettes, and on the other hand a cassette for receiving strand roof tile moldings for the drying and firing process and in particular for carrying out the method.

Characteristic of the known state of the art

The aforementioned method - with so-called. "H-cassettes" - has become known both in practice and for example by EP-PS 0162153. Although the method basically offers advantages and the so-called. Η-cassettes are advantageous in many cases, there is still the disadvantage that the so-called , "Green" (ie still moist, undried) moldings are placed on the cassettes immediately after pressing by means of suction pads. For the removal of an additional gripping station is required, which detects the strand roof tile molding on its later visible side. Since the suction gripper grips the freshly pressed molding and must hold it during the entire loading process, relatively large suction forces are required, and this can lead to surface deformation, namely suction pad impression, on the later roof tile viewing side. In addition to the visual impairment on the stranded roof tiles, there is also the disadvantage of an additional, cost-increasing device / apparatus for the "production line" of the production of stranded roof tiles.Other disadvantage is the fact that the production of glazed or sanded stranded roof tiles is not possible.

Object of the invention

The aim of the invention si id on the one hand, an improvement of the finished product "strand roof tiles" and enabling economic production of possibly glazed or sanded strand tiles and on the other hand, the creation of a cassette that allows the above.

Explanation of the essence of the invention

It is therefore an object of the present invention to provide a simpler method of making stranded roof tiles by using the strand roof tile moldings during drying and firing receiving cassettes, which do not compromise adverse visual side markings. Furthermore, a cassette is to be created, which allows the method and a oreifmittelfreie cassette loading, possibly also an automatic / mechanical cassette discharge, permits with simple means. According to the invention, this object is achieved with respect to the method in that

(a) placing strand roof tile moldings (1) directly on top of a conveyor (molding conveyor) (3) conveying them away from the cutting station and carrying out the cassette loading after being brought up to a distance (so-called gap drawing),

(b) that the shaped conveyor (3) underlines each blank (1) with at least 2, preferably 3 parallel conveyor belts (3a, 3 b, 3c),

(c) that the molding conveyor (3) transports the strand roof tile moldings (1) on a path inclined at an acute angle of less than 30 ° to the moving path of continuously transported cassettes (2) and sweeping the cassette path of movement;

(D) that the cassettes (2) in their the Dachdachziegol-moldings (1) receiving / supporting and extending at a distance from the cassette mounting plane supporting wall / support wall (6) with conveyor passages (7) are provided, which is a dipping of formlingstragenden Conveyor belts (3a, 3b, 3c) and a displacement of the cassettes (2) under the conveyor belts (3a, 3b, 3c),

(E) that the strand roof tile moldings (1) and the cassettes (2) in the same direction (i.e., in the same main direction) and are transported synchronously speed and

(f) that the movement of

1. a formling trimmer,

2. the molding conveyor (3) and

3. the cassette conveyor (4)

is controlled synchronously in dependence on the clay strand movement.

According to the task with respect to the cassette is achieved in that the cassette (2) with lying at a distance from the Aufbuston Tragwand (ung), so-called. Xassettensteg, (6) for the support of at least one stranded roof tile molding (1), preferably two successively arranged moldings (1) is formed, and that in the formlingstrassenden cassette web (6) at least two in Daiihziegelformlirg-Auflegerichtung and parallel conveyor belt passages ( Conveyor passage apertures) (7) for facilitating conveyor dipping into the cassette (2) and cassette displacement under the cassette-side conveyor collar diverter. In the method according to the invention, the still undried, thus deformable in a certain sense, strand roof tile moldings are free of tangles, i. without additional gripping device, placed directly on df a the removal of the cutting station undertaking means of transport. The surface forming the future Sichtsei «of the roof tile remains untouched. Due to the direct loading of the transferring molding conveyor

a) avoided unwanted gripper impressions on the finished product,

b) allows glazing or engobing of roof tiles that is undamaged and flawless on the visible side,

c) achieved a rational and cost-saving operation.

Since the strand roof tile moldings already in the area of the cutting station detecting Formling-Forderer also takes over the cassette loading, a particularly simple and compact device structure (with kurzar length between molding press and cassette loading station) geoaben. The efficient loading of the load - as well as the cassette unloading in reverse order - is made possible by the extremely simple cassette which on the one hand enables the conveyor to be immersed in the cassette and on the other d ^! e cassette displacement with respect to the transporting the moldings and even the Beladovorg.ing (or at oiner unloading. 'The unloading process) vornehmenden conveyor permits.

By the conveyor belt immersion from above enabling breakthroughs in the dan to be dried and burning tile roof tile molding carrying cassette conversion), the -sogen. "Cassette web", also large air openings are available, which allows a good supply of air to the deposited molding, which ultimately also affects the drying process advantageous.

Compared to the prior art (in particular EP-PS 0162153) "I the invention by the fact that the freshly pressed, separated stranded roof tile Formling.e now direct-d. H. without intervening separate or additional gripping station and without mechanical action on the visual surface forming surface - is promoted to the cassette.

embodiment

An embodiment (with two variants of the cassette Fördir.jng) is shown schematically in the drawings and will be explained in more detail below. Show it

1 shows a side view of the Uborladestation in which the green (still undried) strand roof tile moldings for the drying and firing process are mechanically placed on cassettes, h the working position "cassette loading" (the cassette unloading takes place with reverse conveyor circulation)

2: a substantially Fig. ' corresponding side view of the overload station, but the cassettes are not placed directly on the Kassottun conveyor, but on carried by the conveyor, distance-determining auxiliary pallets,

3 shows a cross section of a cassette according to the invention with a strand-roof tile Formliny shown in dot-dash lines and with an indicated Formlirig transport path with preferably three conveyor belts, corresponding to the section line III-III in FIG. 4, FIG.

4 shows a plan view of a partial region of a cassette according to the invention, wherein an applied strand roof tile molding is represented by dash-line lines, and FIG

5 shows an end view of two cassettes stacked one above the other with strand-roof tile moldings shown by dot-dash lines.

In the method according to the invention for the production of continuous roof tiles, the undiluted molded article is numbered 1, are used with 2 figured cassettes of refractory material as a support (base) for the drying and firing process, which allow a grappling rice loading and unloading, so that the finished product unwanted gripper imprints on the roof tile viewing side are excluded and in the Fertigungvanlage suction gripper fitted gripping devices, as they were customary, spare. According to the invention we dor each of the cleavage separated and drawn on the gap "green" strand roof tile molding 1 directly on him under '/ assenc'en conveyor (molding conveyor) 3 abandoned, which him to diner loading station - in particular in a relatively short distance extend to the cutting station, where this continuous roof tile molding 1 is automatically and mechanically applied, namely by means of the conveyor 3 carrying it, to a cassette 2 brought in / conveyed by means of a conveyor (cassette conveyor) 4. The molding conveyor 3 is composed of at least one, preferably three, parallel and spaced adjacent conveyor belts 3a, 3b, 3c - particularly preferred is an embodiment with so-called "knife bands", in which the lower deflection is particularly small dimensions. To enable the automatic loading and unloading of a cassette 2 in a simple way; H. the ent; To make preaching device / device simple and inexpensive, the cassette 2 is in a preferred and vort Lilhafter way designed so that the 'continuous roof tile moldings 1 underneath conveyor belts 3a, 3b, 3c, with> nrom bearing strand at a small acute angle (Under 30 °, in particular about 3-20 °) circulate to the cassette trajectory, immerse in the cassettes 2 from above and the cassettes 2 under the loading (or unloading) Fördere: 3 method - d. H. can be moved past the lower, cassette-side deflection without any danger of collision. For rational operation it can; be advantageous to run the cassette (s) 2 so that several strand roof tile moldings 1 with Abstut (al "air passage in the drying and / or Firennprozeß) X or X 'can be recorded.

Preferably, the inclusion of two spaced behind each strand strand Dachgelgel-Formlingan 1 is provided (see drawing).

The cassettes 2 are in the manner of a so-called. "Η-cassette" executed and have in jodom case a distance to Auf.tellebone arranged on the wing, which are designed to be air-through: -. Ann, preferably designed such that a point-by-molding support and good Luftumspülung on a cassette 2 present strand tile moldings 1 is guaranteed.

The basic shape (in longitudinal or cross section) of the cassette 2 may differ from the mentioned Η-shape. It is sufficient to have an education in the form of an upside-down "U" -thus an n-like basic form.It is important only such a large space between the molding support and cassette mounting plane that the cassette side (ie lower) Förderba; id- Umlenkorgane 3d höhenmäßig recorded (housed).

Regardless of the respective realized cassette basic form (in particular in its longitudinal section), the cassette 2 is to be designed so that a stacking of cassettes 2 in Bele jtem state with forms is easily possible. The cassette 2 has in vertical section, preferably in vertical longitudinal section, in both end areas on 5, which act as a stand and are each formed by a continuous wall (cassette end wall) or at least twelve leg-like legs. Particularly simple, stable and preferred is the esp. From Fig. 3-5 in abstract removable concept with front end Aufstellwänden 5. These Aufstellwände (cassette end walls) 5 s'ch bottom side tapered basic shape, in particular trapezoidal basic shape, have. In order to enable a storage-stable and / or collision-free stacking of the cassettes 2 3U, the lower edges of both setting-up walls 5 are recessed in the central area so that in each case two erection cursings result (in each case four cassettes provided in the corner areas) Supporting wall (ung) of the cassette (ung) of the cassette 2 is denoted by β and executed rust-like.Here it has at least two, preferably three, conveyor belt passages 7, the immersion of the continuous roof tile moldings 1 carrying conveyor belts 3a, 3b, 3c sow The relative displacement between the cassette 2 and the cassette-side ends 'deflections' of the conveyor belts 3a, 3b, 3c is preferably permissible The cassette support conversion 6 is preferably formed by an instep with longitudinal bars in the longitudinal direction of the cassette ) Grate bars 6a extending in the direction of the roof tile moldings 1 conveyor belt Durc hangers (conveyor-passage openings) 7 laterally limit. The conveyor belt passages 7 are on the one hand, i. between the grate bars 6a, jowoils from a gap numbered 7a and, on the other hand, d. H. in the area of the cassette Aufstellwände 5, from an open-topped recess 7b (esp. Formed with U-like basic shape) -c. 3 to 5. In the end view, this results in a U-shaped channel, which allows the cassette 2 with da.'i cassettes Quersclinittprofil immersed molding conveyor 3 on total Kassettenlän.qe under the cassette-side conveyor ends (Conveyor belt deflections) to move. To ensure a good Luftumspülung applied strand roof tile moldings 1, the cassette 2 is provided on top with cams 8.9, resulting in a pointwise (in places * edition results.) These cams ß, S are arranged on the grate bar top sides Their support surfaces (top surfaces ) are adapted to the strand roof tile Unterueitenform, ie, in profile arcuate tile embodiment, the cam surfaces in the cassette cross-section are also on a sheet, so that a proper molding support is selected and the still deformable "green" strand roof tile moldings 1, in a particularly preferred embodiment, the cassette grate bars forming the roof tile molding support extend rubbing on a plane, in particular parallel to the mounting plane of the cassette 2.

The ancestor according to the invention, in particular the operation of the cassette loading without the aid of a respective moldings 1 on the later visible side gripping suction pad od. Like., Is from Fig. 1 (in a helper pallet-free method) or from Fig. 2 (in a method with auxiliary pallets 10) easy to understand. The movement is made clear by the arrows A, B and C. Arrow "A" indicates the general conveying direction "Loading". Arrow "B" shows the circulation of coffee powder conveyor 4 present in this case, and arrow "C" shows the circulation direction of shaped conveyor 3 (of at least two, preferably three, side-by-side arranged conveyor elements, in particular Knife tapes is formed, whose height is adapted to the strand roof tile form-see Fig.3).

The discharge of the strand tiles from a cassette 2 takes place in the reverse direction, i. H. in opposite to the arrows B and C successful conveyor circulation.

In order to ensure proper positioning of the strand roof tile blanks 1 on the respective cassettes 2, a circuit arrangement is present, in which the movement of

a) a cutter, so-called. Cutting table,

b) the "green" strand roof tile moldings 1, preferably cut off and placed on clearance / gap X or X ', conveying from the cutting station and carrying out the cassette loading, Formlirig conveyors 3,

c) the? The cassettes 2 of the roof tile loading point are controlled so that the cassette conveyor 4 is controlled synchronously in response to the clay string movement.

Preferably, at the same time two Strangdfxhziegel-shaped articles 1 are separated from the clays and then pulled on distance / gap. In this case, the cutting mittsls done as a reciprocating horizontally movable and height-adjustable cutting elements comprising üchneidtisches (not shown) and the distance or gap-pulling the just cut moldings (strand roof tile) 1 depending on the "flow" and "return" of the cutting table. The gap X or X 'is achieved at (i.e., by) the cutting table retrace and the gap Y or Y' at (i.e., through) the cutting table leader.

The cut and struck Strar.gdachnegel-shaped articles 1 are placed in their direction of movement "A" behind the cutting table directly on the ius the conveyor 3 erstereende transport path and from the conveyor upper strand on an oblique path, v. Oak the horizontal Kassetton- Trajectory cuts, fed to the cassette to be loaded 2 and stored by derselbsn on the respective cassette 2. The distances are consistent, since the cassettes 2 and

Strand roof tile moldings 1 speed synchronously. The transfer to the cassettes 2 is gradual, as the slanted blank conveyor path dips into recesses 7 of the cassette (s) 2 and intersects the cassette trajectory (i.e., crosses (lacheng) t). The cassettes 2 are supplied continuously and depending on the type of Zuführrautomatik on auxiliary pallets 10 or directly on the cassette conveyor 4. When using auxiliary pallets 10, these always have gieicho distances from each other. These distances are specified by the furnace stock.

Claims (9)

1. a molding separator, 1. A process for the production of continuous roof tiles, in which the "green" strand roof tile moldings cut from the clay strand are spaced (gap) and placed on cassettes (frames) and passed through a dryer and kiln on these cassettes, characterized (a) placing strand roof tile moldings (1) directly on top of a conveyor (molding conveyor) (3) conveying them away from the cutting station and carrying out the cassette loading after being brought up to a distance (so-called gap drawing), (b) that the forming conveyor (3) underlies each blank (1) with at least 2, preferably 3 parallel conveyor belts (3a, 3b, 3c), (c) that the conveyor belt conveyor (3) transports the strand roof tile moldings (1) on a path inclined at an acute angle of less than 30 ° to the path of continuously transported cassettes (2) and intersecting the cassette path of movement, (d) the cassettes (2) are provided with conveyor belt passages (7) receiving and supporting the strand roof tile moldings (1) extending at a distance from the cassette mounting plane and having conveyor belt passages (7) which immerse the mold carrier Conveyor belts (3 a, 3 b, 3 c) and a displacement of the cassettes (2) enter the conveyor belts (3a, 3b, 3c) allows (e) υ ,, the strand tile moldings (1) and the cassettes (2) in the same direction (i.e., in the same main direction) and are transported synchronously speed and (f) that the movement of 2. The method according to claim 1, characterized in that on each cassette (2) two strand roof tile moldings (1) at a distance (X, X ') are successively placed one behind the other. 2. the molding conveyor (3) and 3. The method according to claim 1 or 2, characterized in that the blanks (1) taking over cassettes (2) on horizontal trajectory as well as closely following on a conveyor (4) are transported directly superimposed / fed. 3. the cassette conveyor (4) is controlled synchronously in dependence on the clay strand movement. 4. The method according to claim 1 or 2, characterized in that the blanks (1) taking over cassettes (2) on horizontal trajectory and distance-determining auxiliary pallets (10) -ließ on a conveyor (4) are transported / supplied. 5. A method in particular according to claim 1, characterized in that after firing the cassettes (2) by means of the cassettes (2) immersed and let pass lassender- and ' each from below a strand roof tiles (1) detecting, on oblique path conveying conveyor belts (3 a, 3 b, 3 c) are emptied. 6. The method according to at least one of claims 1 to 5, characterized in that for loading and / or unloading of the cassettes (2) conveyor belts (3a, 3b, 3c) with a small deflection radius at the cassette-side deflection, so-called. "Knife tapes" are used. 7. cassette / frame for receiving strand roof tile moldings for the drying and firing process and in particular for carrying out the method according to at least one of claims 1 to 6, characterized in that the same (2) lying at a distance to the mounting plane supporting wall (ung) , so called Cassette web, (6) for the support of at least one strand roof tile molding (1), preferably two successively arranged moldings (1), is formed and that in the formlingstragenden cassette web (6) at least two in Dachziegelformling-Auflegeichung and mutually parallel conveyor belt passages ( Conveyor passage apertures) (7) for facilitating conveyor dipping into the cassette (2) and cassette displacement under the cassette side conveyor deflection (3d). 8. A cassette according to claim 7, characterized in that the dachziegelformlingstrassende cassette web (6) is formed by a between end-hung mounting elements, preferably Aufstellwänden, (5) extending grate, said middle grate gaps (7 a) form the conveyor belt passages (7). 9. A cassette according to claim 7 or 8, characterized in that in the region between InnenUegenden grate bars (6 a) in the end-end Aufstellwanden (5) to form the conveyor belt passages (7) U-like recesses (7 b) are provided so that pass through the entire length of cassette conveyor belt passages (7). 1E. Cassette according to at least one of claims 7 to 9, characterized in that the same (2) is provided at the top with cams (8, 9) for spot-wise (pointwise) molding support.