EP3050688A1 - Cutting method and cutting system for longitudinal and transverse cutting of cut-resistant lightweight concrete cakes, in particular porous or foam concrete cakes, and method and device for producing lightweight concrete moulds, in particular porous or foam concrete moulds - Google Patents

Abstract

The present invention relates to a cutting method and a cutting system (6) for cross and longitudinal cutting a green or plastic lightweight concrete cake (8), in particular a pore or foam concrete cake in lightweight concrete shaped body (50), in particular pore or foam concrete moldings, and a Method and an apparatus for producing lightweight concrete shaped bodies (50), in particular pore or foam concrete shaped bodies.

Description

The present invention relates to a cutting method and a cutting system for cross-cutting and slitting a green or plastic lightweight concrete cake, in particular a pore or foam concrete cake in lightweight concrete moldings, in particular pore or foam concrete moldings, and a method and apparatus for producing lightweight concrete moldings, in particular pore or Schaumbetonformkörpern.

Aerated concrete is a hydrothermally cured, porosated calcium silicate hydrate material. It is produced from aqueous mixtures of at least one mineral binder which contains at least one CaO component which is reactive in the hydrothermal process, for example cement or quicklime or hydrated lime, and at least one SiO ₂ component, eg quartz flour or fly ash, a blowing agent, in particular aluminum powder. and / or paste, and optionally inert additives and / or additives. This fresh concrete mass is poured into molds, floated and stiffened, cut and then subjected to steam hardening. For the production of hydrothermally cured foam concrete material prefabricated foam is mixed in place of the blowing agent.

According to a known method for the production of molded articles made of cellular concrete, the fresh concrete mass is filled into an upwardly open mold and allowed to stiffen and float in this. If the fresh concrete mass has reached a sufficient green state or cutting strength, the two side walls and the two end walls of the mold are folded away. The green cellular concrete cake is now gripped by means of a lifting device, lifted and by lateral displacement to a cross-cutting device promoted. In the transverse cutting device, a hardening residue is arranged, which has two outer longitudinal beams and a plurality of transverse bars. On the crossbar are numerous in the transverse direction spaced longitudinal bars. By means of spacer pins, the position of the longitudinal bars is determined. Before the aerated concrete cake to be cut is conveyed to the cross-cutting device, profiled transport shafts are driven against the longitudinal bars from below and the longitudinal bars are lifted off the hardening material by means of the transpart shafts. The transport shafts have circumferential, annular grooves, in each of which a longitudinal bar engages positively. The transport rollers pass through the spaces between two mutually adjacent crossbar of Hardenosts during startup.

On the longitudinal bars are in the transverse direction of the hardening rust extending transverse cutting wires. The aerated concrete cake is now placed on the longitudinal bars by means of the lifting device. Thereafter, the cross-cutting of the aerated concrete cake by the cross-cutting wires are pulled through from the bottom up through the green porous concrete cake.

Subsequently, the longitudinal cutting of the aerated concrete cake takes place. However, prior to slitting, the individual green shaped bodies are only abutted again, so that the resulting transverse cutting gaps are closed in order to ensure a clean slitting. For this purpose, usually two impact devices are present, as for example in the DE 10 2007 034 779 A1 are described. The two impact devices engage the two end faces of the cross-cut aerated concrete cake and push the individual aerated concrete molded bodies together again. For this purpose, there is one of the two abutment means at the free, rear, the Längsschneidrahmen opposite end of the cross cutter and the other pusher at the front end of the cross cutter, adjacent to the longitudinal cutting frame. In this case, the second bumper is seen in the cake transport direction arranged in front of the longitudinal cutting frame. The impact devices each have individual slats.

After collision, the slitting now takes place. For this purpose, the cross-cut porous concrete cake is pushed through the rear bumper by a vertical cutting wires having longitudinal cutting frame and thereby cut longitudinally. The longitudinal bars are driven through together with the cellular concrete cake by the longitudinal cutting frame between the cutting wires. They drive the transport waves. Behind the longitudinal cutting frame are also profiled transport shafts which receive the longitudinal bars. After slitting the transport shafts are lowered, so that the longitudinal bars are arranged with the arranged thereon, longitudinally and transversely cut porous concrete cake lowered to a waiting hardening.

The two impact devices thus also engage during the longitudinal cutting process on the two end faces and thus support and push the cellular concrete cake during the longitudinal cutting process. For this purpose, the two impact devices move together with the cellular concrete cake in the cake transport direction. The first, rear bumper moves during the longitudinal cutting process in the cake transport direction over the cross cutting bed of the cross cutter towards the longitudinal cutting frame. The slitting wires are disposed at the end of the slitting operation between the slats of the rear bumper. At the beginning of the longitudinal cutting process, the longitudinal cutting wires are arranged between the lamellae of the front, second pusher. The second, front bumper moves during the longitudinal cutting process in the cake transport direction over the longitudinal cutting bed away from the longitudinal cutting frame to the front end of the longitudinal cutting device.

The DE 10 2007 034 779 A1 also discloses that the opposing front pusher can be pivoted upwardly. In this case, it does not move with the cellular concrete cake, but this passes under it.

After slitting, the hardening residue, together with the longitudinal bars and the cut porous concrete cake arranged thereon, are transported away via roller conveyors and hardened in an autoclave.

The known longitudinal bars have a rectangular cross section and are arranged edgewise. That is, their height is significantly greater than their width. In particular, the width is 5 mm and the height 20 mm. The small width is necessary so that the width of the aerated concrete moldings can be varied in the smallest possible steps. Due to their small width, however, the longitudinal bars can press into the still soft cellular concrete material. In addition, the longitudinal bars must be guided in the deep grooves or grooves of the transport shafts to avoid the running of the longitudinal bars.

It is also known to use strip-shaped U-profiles or U-rails at the outer edge of the hardener rust instead of the longitudinal bars. The U-profiles are arranged such that the two U-legs rest on the Hardenost or the transport rollers and the central web serves as a support surface for the porous concrete cake. The contact surface is 30 mm wide. As a result, the U-profiles press less in the aerated concrete cake. Disadvantage of U-profiles, however, is that U-legs eat into the transport rollers and thus lead to a faster wear of the transport shafts.

The object of the present invention is to provide a cutting system and a cutting method for longitudinal and transverse cutting of a greenest lightweight concrete cake, in particular a pore or foam concrete cake, by means of which short cycle times are made possible.

Another object is to provide a device and a method for producing hydrothermally hardened lightweight concrete moldings, in particular pore or Schaumbetonformkörpern, by means of the short cycle times are made possible.

These objects are achieved by a cutting apparatus having the features of claim 1, a cutting method having the features of claim 12, a method having the features of claim 22 and an apparatus having the features of claim 21. Advantageous developments of the invention are characterized in the subsequent subclaims.

Figur 1:

Eine schematische Draufsicht auf die erfindungsgemäße Vorrichtung

Figur 2:

Eine schematische Draufsicht auf die erfindungsgemäße Schneidanlage

Figur 3:

Eine schematische Seitenansicht einer Querschneideeinrichtung der erfindungsgemäßen Schneidanlage ohne einen Querschneiderahmen und mit eingefahrenen Transportwellen

Figur 4:

Eine schematische Seitenansicht der Querschneideeinrichtung gemäß Fig. 3 mit ausgefahrenen Transportwellen

Figur 5:

Eine schematische stirnseitige Ansicht der Querschneideeinrichtung mit Querschneiderahmen und mit ausgefahrenen Transportwellen

Figur 6:

Eine schematische Seitenansicht einer ersten, hinteren Stoßeinrichtung der erfindungsgemäßen Schneidanlage in unterer Stellung

Figur 7:

Eine schematische stirnseitige Ansicht der ersten, hinteren Stoßeinrichtung in unterer Stellung

Figur 8:

Eine schematische stirnseitige Ansicht der ersten, hinteren Stoßeinrichtung in oberer Stellung

Figur 9:

Eine schematische Seitenansicht einer Längsschneideeinrichtung der erfindungsgemäßen Schneidanlage mit einem Längsschneiderahmen in seiner oberen, verschwenkten Stellung und einem weiteren Längsschneiderahmen in Schneidposition

Figur 10:

Eine stirnseitige Ansicht eines Härterosts mit Längsstäben

Figuren 11a)-d):

Stark vereinfachte schematische Ansichten der Quer- und der Längsschneideeinrichtung in unterschiedlichen Verfahrensstadien

In the following the invention will be explained in more detail by way of example with reference to a figure. Show it:

FIG. 1:

A schematic plan view of the device according to the invention

FIG. 2:

A schematic plan view of the cutting device according to the invention

FIG. 3:

A schematic side view of a cross-cutting device of the cutting system according to the invention without a cross-cutting frame and with retracted transport shafts

FIG. 4:

A schematic side view of the cross cutting device according to Fig. 3 with extended transport shafts

FIG. 5:

A schematic frontal view of the cross cutting device with cross cutting frame and with extended transport shafts

FIG. 6:

A schematic side view of a first, rear bumper device of the cutting system according to the invention in the lower position

FIG. 7:

A schematic frontal view of the first, rear bumper in the lower position

FIG. 8:

A schematic frontal view of the first, rear bumper in the upper position

FIG. 9:

A schematic side view of a longitudinal cutting device of the cutting system according to the invention with a longitudinal cutting frame in its upper, pivoted position and a further longitudinal cutting frame in cutting position

FIG. 10:

An end view of a hardening rust with longitudinal bars

FIGS. 11a) -d):

Highly simplified schematic views of the cross and the longitudinal cutting device in different stages of the process

The device 1 according to the invention Fig. 1 ) has a mixing plant 2 for mixing pore or foam concrete fresh mass with filling 3 for filling the pore or Schaumbetonfrischmasse in an upwardly open mold 4, preferably a heat chamber 5, a Umsetzanlage (not shown), the cutting unit 6 according to the invention and a hardening system. 7 for hydrothermal hardening.

In the mixing plant 2, the pore or Schaumbetonfrischmasse is mixed. The fresh mass is an aqueous mixture comprising at least one SiO ₂ component, for example quartz flour or fly ash, at least one mineral binder, a blowing agent, in particular aluminum powder and / or paste, and / or premixed foam, and expediently at least contains an inert additive and / or aggregate. The binder contains at least one CaO component which is reactive in the hydrothermal process, for example cement or quicklime or hydrated lime.

The prepared fresh concrete mass is then filled by means of the filling 3 in the upwardly open mold 4. Optionally, there is also a reinforcement frame, by means of which a reinforcement in the mold is hung. Alternatively, the reinforcement can be hooked into the mold after casting.

The filled with fresh concrete mass mold 4 is now transported to the heat chamber 5 and left in this driving and stiffening. In the case of Schaumbetonfrischmasse eliminates the blowing. The result is a greenest or cut-resistant, plastic lightweight concrete cake 8, in particular a pore or foam concrete cake. 8

Subsequently, the mold 4 is conveyed to the transfer plant. The transfer plant is used to convert the greenest lightweight concrete cake 8 for cutting system 6 according to the invention. The mold 4 has in a conventional manner a mold bottom 4c, and two mold end walls 4a and two mold side walls 4b. The mold end walls 4a and the mold side walls 4b are first folded away ( Fig. 1 ). Then the lightweight concrete cake 8 is gripped by means of the Umsetzanlage in a conventional manner, lifted from the mold base 4c and transported to the cutting unit 6 according to the invention.

The cutting device 6 according to the invention Fig. 1 . 2 ) serves both for cross-cutting and for slitting the greenest lightweight concrete cake 8. As a result, the cutting unit 6 both a cross-cutting device 9 and a longitudinal cutting device 10 on. In addition, the cutting unit 6 has a first and a second pusher 30; 31 for closing the cross-sectional gaps after the cross-cutting on. In addition, the cutting unit 6 in a conventional manner two Härterosttransportschienen 12 for transporting a Hardening 13 in a horizontal cake transport direction 14, and a plurality of profiled transport shafts 15 for transporting a longitudinal strips or longitudinal bars 16 resting lightweight concrete cake 8.

The lightweight concrete cake to be cut 8 ( Fig. 1 . 3-6 . 8-10 ) is preferably cuboid and has a planar or planar, in particular horizontal, cake base or cake support surface 11 a, one of these opposite cake top 11 b, two opposing, planar or planar, vertical to the cake bottom 11a, especially vertical, cake side surfaces 11 c and two to the cake side surfaces 11 c and the cake support surface 11 a vertical, in particular vertical, cake end faces 11 d on. The lightweight concrete cake 8 also has a longitudinal extent in a horizontal cake longitudinal direction 8a. In addition, the lightweight concrete cake 8 has a, in particular horizontal, the cake longitudinal direction 8a vertical cake width direction or cake width direction 8b and a cake longitudinal direction 8a and the cake transverse direction 8b vertical, in particular vertical, cake height direction 8c. The cake support surface 11 a and the cake top 11 b are in particular perpendicular to the cake height direction 8c. The two cake side surfaces 11c are preferably perpendicular to the cake transverse direction 8b and the two cake end faces 11d are preferably perpendicular to the cake longitudinal direction 8a.

The Härterosttransportschienen 12 of the cutting unit 6 serve to transport a Hardenoste 13. The two stationary Härterosttransportschienen 12 are parallel to each other and each extending parallel to the cake transport direction 14. Each transport rail 12 has a plurality, in the cake transport direction 14 successively arranged Härterosttransporträder 12a. The Härterosttransporträder 12a are each connected to the transport rails 12 rotatably about a horizontal, perpendicular to the cake transport direction 14 axis of rotation. In addition, the Härterosttransporträder 12 a are fixed to the inside of the transport rails 12. At least a portion of the transport wheels 12 is rotatably driven to drive the hardener rust 13 by means of corresponding drive means. Alternatively or additionally, e.g. Friction wheels for driving the Hardenosts 13 be present.

As already explained, the Hardenosttransporträder 12a are used for moving the Hardenostes 13 in the cake transport direction 14. The Hardener 13 ( Fig. 1 . 3-5 . 7-10 ), which is inventive in itself, has two spaced apart longitudinal grate bars 18 and a plurality of grate bars 19, which connect the two longitudinal grating bars 18 together. The longitudinal grating bars 18 have a longitudinal extent in a horizontal grate longitudinal direction 13a, which is parallel to the cake longitudinal direction 8a and parallel to the cake transport direction 14. The crossbars 19 have a longitudinal extent in a likewise horizontal grating transverse direction 13b. The grate longitudinal direction 13a and the grating transverse direction 13b are perpendicular to each other. A vertical grate height direction 13c of the hardening grate 13 is perpendicular to the grate longitudinal direction 13a and to the grate transverse direction 13b.

The longitudinal grating bars 18 each have one, in particular planar, longitudinal beam upper side 18a and a longitudinal beam lower side 18b which is preferably parallel thereto, in particular likewise planar, and a longitudinal beam inner side 18c. With the two longitudinal beam undersides 18b, the hardener rust 13 is arranged on the harrowing transport wheels 12a. That is, the longitudinal beams 18 are each roll-mounted with the longitudinal beam bottoms 18b on the harrowing transport wheels 12a. In this case, the hardener 13 is arranged between the two rail tracks 12a.

Furthermore, the two grate longitudinal beams 18 are preferably designed as U-profile rails, that is, the two grate longitudinal beams 18 preferably each have a U-shaped cross-section. The grate bars 19 are preferably tubular or formed as a hollow profile and in particular have a circular cross-section. At their two ends, the crossbars 19 are each firmly connected to one of the two longitudinal grating bars 18, in particular welded or screwed. The grate bars 19 are spaced from one another in the longitudinal direction 13a of the grate. In addition, the crossbars 19 each close to the longitudinal beam inside 18c. Between two mutually adjacent grate bars 19 each have a gap between the bays 20 is present. The crossbars 19 each have a transom outer side 19a. The Transom outer sides 19a of the crossbars 19 span a horizontal support plane for the likewise inventive inventive longitudinal strips 16 and the transom outer sides 19a define the horizontal support plane.

Furthermore, the grate bars 19 or at least two of the grate bars 19, in the grate height direction 13c upwards of the grate bars 19, in particular each of the crossbeam outer side 19a, projecting pins 21. The pins 21 are spaced from each other in grating transverse direction 13b or adjacent to each other. The pins 21 are used in a conventional manner for positioning the longitudinal strips 16 on the Härterost 13, which will be discussed in more detail below. As a result, the distance between two adjacent to each other in the grating transverse direction 13b pins 21 a width B of a longitudinal bar 16. In addition, the pins 21 of the rust in the longitudinal direction 13a successively arranged crossbars 19 in the longitudinal direction 13a are arranged in alignment with each other.

The longitudinal strips 16 (FIG. Fig. 3 . 4 . 6 . 9 . 10 ) have a longitudinal extension in the longitudinal direction 13a of the grate. In this case, the length of the longitudinal strips 16 is preferably dimensioned such that two longitudinal strips 16 are arranged one behind the other in the longitudinal direction 13a of the grate on a hardening core 13. In addition, the longitudinal strips 16 have a rectangular cross-section. That is, the longitudinal strips 16 each have a planar, horizontal strip top side 16a, a strip bottom side 16b parallel thereto and two parallel strip side surfaces 16c (FIG. Fig. 10 ). The two strip side surfaces 16c are perpendicular to the strip top 16a and the strip bottom 16b, and perpendicular to the grating transverse direction 13b. The longitudinal strips 16 may be formed as a hollow profile or as a solid profile (ie, solid material).

The longitudinal strips 16 have a height H, that is to say an extension in the direction of the grate height 13c and the width B, that is to say an extension in the grating transverse direction 13b. The height H is preferably 16 to 30 mm, in particular 18 up to 22 mm. In this case, all longitudinal strips 16 have the same height H. According to the invention, the width B of the longitudinal strips 16 is 16 to 30 mm, preferably 18 to 22 mm, wherein in particular all longitudinal strips 16 except for the two outer longitudinal strips 16 have the same width B.

As will be explained in more detail below, serve the longitudinal strips 16 for receiving the lightweight concrete cake 8 during transverse and longitudinal cutting. As a result of the above-described determination of the specific width B of the longitudinal strips 16, on the one hand it is ensured that a sufficient contact surface for the lightweight concrete cake 8 is created. As a result, it is prevented in comparison to the known longitudinal strips that the longitudinal strips 16 press into the lightweight concrete cake 8. On the other hand, the width B but at the same time dimensioned so that the usual plate thicknesses can be made from 50 mm. The plate thickness is determined in each case during longitudinal cutting of the lightweight concrete cake 8. Furthermore, the longitudinal strips 16 according to the invention are significantly more stable than the previously known longitudinal strips and bend less. Also, the transport shafts 15 can be made simpler, since the leadership of the invention, wide longitudinal strips 16 is much simpler than the leadership of the previously known, narrow longitudinal bars. Because the longitudinal strips 16 according to the invention run and do not twist but lie with a sufficiently large area on the transport shafts 15 and the grate crossbar 19. A part of the transport shafts 15 can therefore have a smooth shaft surface and need not have any circumferential grooves or grooves for guiding the longitudinal strips 16, as is usual. For example, every second transport shaft 15 has a smooth shaft surface. Due to the wide support surface, the longitudinal strips 16 do not eat into the shaft surfaces of the transport shafts 15.

The transport shafts 15 are arranged in the cake transporting direction 14 spaced from each other and adjacent to each other. The transport shafts 15 each have a horizontal shaft rotation axis 15a, which is perpendicular to the cake transport direction 14 is. Around the shaft rotation axis 15a, the transport shafts 15 are freely rotatable. The transport shafts 15 are preferably hollow shafts, which are freely rotatably mounted about the shaft rotation axis 15a on a bearing axis carried out by the transport shafts 15. In particular, the bearing axles are both non-displaceably mounted in bearing blocks 22 at both ends. The bearing blocks 22, which are arranged adjacent to one another in the direction of cake transport 14, are also fixed, ie non-displaceable and non-rotatable, connected to a connecting beam 23a extending in the direction of cake transport 14. In addition, there are horizontal, perpendicular to extending connecting beam 23b, which connect perpendicular to the transport direction 14 opposite bearing blocks 22 together. As a result, the individual transport shafts 15 are connected to one another immovably.

Furthermore, the transport shafts 15 can be driven up and down in the vertical direction, for which purpose suitable lifting drive means are also available. In particular, a plurality, preferably four, in particular hydraulic, lifting cylinders 24 are present. The lifting cylinders 24 are supported at one end stationary on the ground and are the other end to the connecting beam 23 a; 23b connected. By retracting and extending the lifting cylinder 24, the transport shafts 15 can be raised and lowered. In particular, the transport shafts 15 are drivable from a lower or retracted into an upper or extended position and vice versa. In this case, preferably all transport shafts 15 are raised or lowered simultaneously or synchronously. In this case, the transport shafts 15 are arranged so that they each drive through the interstices 20 of the Hardening 13 by lifting and lowering. It can also pass through several transport shafts 15 through the same intermediate beam space 20.

In its upper position ( Fig. 4 . 5 . 11a ), b)), the transport shafts 15 are arranged above the grate bars 19. As a result, the transport shafts 15 abut on the strip bottoms 16b of the longitudinal strips 16, so that they are separated from the strip Hardenost 13 are lifted, which is discussed in more detail below. In its lower position ( Fig. 3 . 7 . 11c ), d)), the transport shafts 15 are arranged below the plane spanned by the grate bars 19 support level. They are also located below the last bottoms 16b and spaced from them in the vertical direction.

The cross cutter 9 ( Fig. 1-5 . 11a) -d) ) of the cutting device 6 according to the invention is used in a conventional manner for transverse cutting of the lightweight concrete cake 8. When cross cutting vertical cut surfaces are generated, which are perpendicular to the cake longitudinal direction 8a. For this purpose, the cross-cutting device 9 has a cross-cutting frame 17. In addition, as seen in the cake transport direction 14, the cross cutter 9 has a front cross cutter end 9a and a rear cross cutter end 9b.

In the transverse cutting device 9, moreover, the longitudinal strips 16 are arranged on the transport shafts 15 when they are in their extended position. The longitudinal strips 16 lie with their strip bottom side 16b on the transport shafts 15. In this case, the longitudinal strips 16 are seen in the grating transverse direction 13b spaced from each other or arranged adjacent.

The, in particular cuboid, cross-cutting frame 17 of the cross-cutting device 9 has in known manner two longitudinal frame bars 17a and two frame crossbars 17b and four horizontal wire receiving shafts 25 with at least one, preferably a plurality, cross cutting wires 26. The cross cutting wires 26 extend perpendicular to the cake transport direction 14 and perpendicular to the cake longitudinal direction 8a. Furthermore, the cross-cutting frame 17 in a conventional manner in the vertical direction up and down, for which purpose suitable drive means, in particular hydraulic cylinders 28 are present. Alternatively or additionally, a chain drive may also be present. In addition, a vertical guide 27 is present. In its lower position, the cross-cutting frame 17 is arranged so that the transverse cutting wires 26 are horizontally aligned and rest on the longitudinal strips 16. For transverse cutting, the transverse cutting wires 26 are pulled through from below through the lightweight concrete cake 8. In this case, the cross-cutting frame 17 is preferably drivable so that the transverse cutting wires 26 are inclined to the horizontal when they are pulled through the lightweight concrete cake 8 ( Fig. 5 ). In addition, the transverse cutting wires 26 can be driven in an oscillating manner by means of the wire receiving shafts 25.

The longitudinal cutting device 10 of the cutting device 6 according to the invention ( Fig. 1 . 2 . 9 . 11a ) -c)) is downstream of the cross-cutting device 9 in the cake transport direction 14. It serves in a conventional manner for longitudinal cutting of the lightweight concrete cake 8. The longitudinal cutting device 10 has seen in the cake transport direction 14, a front Längsschneideeinrichtungsende 10 a and a rear slitter end 10 b. When slitting vertical cutting surfaces are generated, which are perpendicular to the cake width direction 8b and parallel to the cake transport direction 14. For this purpose, the longitudinal cutting device 10 has at least one, preferably two, upright longitudinal cutting frames 29.

A longitudinal cutting frame 29 has, in a manner known per se, two upright frame beams 29a, an upper, horizontal frame beam 29b and a lower, horizontal frame beam (not shown), and two horizontal wire receiving systems 32 with at least one, preferably several, longitudinal cutting wires 33. The longitudinal cutting wires 33 extend either in the vertical direction or are inclined to the vertical. However, the longitudinal cutting wires 33 are always perpendicular to the cake width direction 8b. In order to incline the longitudinal cutting wires 33 to the vertical, suitable drive means known per se are provided. Like the transverse cutting wires 26, the longitudinal cutting wires 33 can also be driven in an oscillating manner by means of the wire receiving shafts 32.

Preferably, the longitudinal cutting frame 29 are also by means of suitable drive means in the vertical direction movable up and down on a support frame 34 stored. In its lower position, a longitudinal cutting frame 29 is arranged in each case so that the longitudinal cutting wires 33 are arranged in the movement path of the lightweight concrete cake 8. In its upper position it is located outside the trajectory. It is thus arranged above the cake top 11 b. In addition, the longitudinal cutting frames 29 are preferably pivotable about a vertical axis back and forth on the support frame 34 so that they can be pivoted out of the path of movement of the lightweight concrete cake 8 and into it. In Fig. 9 a longitudinal cutting frame 29 is shown in the pivoted-out position and the other in the cutting position. Characterized in that two longitudinal cutting frame 29 are present, the longitudinal cutting frame 29 can be replaced in a simple manner to cut different plate thicknesses. During the longitudinal cutting itself, however, the respective longitudinal cutting frame 29 is stationary.

As already explained, the cutting unit 6 also has the first and second pushers 30, 31. In this case, according to the invention, the first, rear pusher 30 is arranged in the direction of cake transport 14 before the cross-cutting device 9 or at the front cross-cutter end 9a. The second, front pusher 31 is arranged in the direction of cake transport 14 before the first pusher 30 and arranged in front of or behind the longitudinal cutting frame 29 (not shown). Moreover, both the first and the second pusher 30, 31 can be driven up and down in the vertical direction by means of suitable drive means in such a way that they can be brought or moved completely out of the movement path of the lightweight concrete cake 8 and into it. Because of this, the inventive arrangement of the first pusher 30 in front of the cross-cutting device 9 and between the cross-cutting device 9 and the longitudinal cutting device 10 in the first place possible.

The first bumper 30 ( Fig. 1 . 2 . 6-8 . 11a) -c) ) has a bumper base 35, a bumper support frame 36, two bumper guide rails 37, and a plurality of plate packs 38a; b on.

The baffle base frame 35 has four vertical base frame beams 35a and two upper, horizontal, parallel to the cake transport direction 14 extending base frame longitudinal beam 35b, two upper horizontal, perpendicular to the cake transport direction 14 extending base frame crossbars 35c and optionally further Grundgestellquer- and / or -längsstreben 35d.

In this case, two vertical base frame beams 35a are arranged on one side of the movement path of the lightweight concrete cake 8 and the other two vertical base frame beams 35a on the other side of the movement path of the lightweight concrete cake 8. The vertical base frame beams 35a, which are adjacent to one another in the cake transverse direction 8b, are thus spaced apart by more than one width of the lightweight concrete cake 8. The baffle base frame 35 spans the path of movement of the lightweight concrete cake 8 like a bridge. As a result, the scaffolding base frame 35 is always arranged outside the movement path of the lightweight concrete cake 8.

The bumper base frame 35 is also reciprocally movable parallel to the cake transporting direction 14 and mounted on the two bumper guide rails 37. The two bumper guide rails 37 extend parallel to the cake transporting direction 14 and are spaced from each other. For storage on the bumper guide rail 37, the vertical base beams 35a have respective rollers 37a at their lower end. The rollers 37 a are guided on the bumper guide rail 37. Furthermore, there are drive means, with which the push-button base frame 35 is reciprocally drivable in parallel to the cake transport direction 14. The drive means are preferably two stationary toothed racks 39a, in each case a pinion 39b meshing with the toothed rack 39a, and in each case a drive motor 39c for driving the pinion 39b. The pinion 39b and the drive motor 39c are fixed to the bumper base frame 35, that is, immovably connected.

In a preferred embodiment, the cuboid bumper support frame 36 has two vertical support frame beams 36a facing away from the batten packs 38a, b and two upper, horizontal, support frame longitudinal beams 36b extending parallel to the cake transport direction 14, two lower, horizontal, support frame longitudinal beams 36c extending two parallel to the cake transport direction 14 Horizontal, perpendicular to the cake transport direction 14 extending support frame crossbar 36 d and two lower, horizontal, perpendicular to the cake transport direction 14 extending support frame crossbar 36 e on. The bumper support frame 36 is reciprocally slidably supported on the bumper base frame 35 in a reciprocating manner. For example, the bumper rack 36 is reciprocable on the baffle base 35 in the vertical direction by means of guide rollers 49 which rotate about horizontal axes of rotation, and guided non-displaceably in the horizontal direction. Furthermore, drive means 40, e.g. a drive motor, present, with which the Stoßeinrichtungstraggestell 36 in the vertical direction relative to the Stoßeinrichtungsgrundgestell 35 oscillating or up and down drivable in communication. The drive means 40, in particular the drive motor, are preferably mounted on the push-button base frame 35.

The disk packs 38a, b each have a plurality of lamination plates 41, which are arranged adjacent to one another in the cake transverse direction 8b and spaced apart from one another. In the vertical spaces between the lamella plates 41 enter the longitudinal cutting wires 33 a. The lamellar plates 41 each have a first, free, planar plate end face 41 a and one of these parallel to the cake transport direction 14 opposite, second, plate end surface 41 b. The free plate end faces 41a are each perpendicular to the cake transport direction 14 and thus parallel to the cake end faces 11 d. The free plate end faces 41 a each form an abutment surface 43 of the respective plate pack 38 a, b. The second plate end surface 41 b is fixedly connected to a horizontal, perpendicular to the cake transport direction 14 extending fin support bar 44.

The individual disk packs 38a; b are arranged one above the other in the vertical direction and spaced from each other. Between two mutually adjacent disk packs 38a, b, a horizontal gap 42 is thus present in each case.

In this case, the first bumper 30 preferably has both movable and non-movable plate packs 38a, b relative to the bumper support frame 36. The non-movable plate packs 38a are firmly connected to the push device support frame 36. The non-movable disk packs 38a are arranged below the movable disk packs 38b. The movable plate packs 38b are reciprocally mounted parallel to the cake transport direction 14 and displaceable on the bumper support frame 36. The movable disk packs 38b are preferably movable individually or independently of one another via bearing beams.

As a drive means for the movable plate packs 38b are e.g. one hydraulic cylinder 47 and two drive motors 48 connected to all hydraulic cylinders 47 are present for each disk pack. The hydraulic cylinders 47 are each supported at one end on the plate support bar 44 and the other end on the Stoßeinrichtungstraggestell 36. Spindle motors can also be used (not shown), then a spindle motor is preferably present per disk pack 38b.

Due to the movable plate packs 38b, the first pusher 30 can be adapted to different heights of the lightweight concrete cake 8. For this purpose, the movable disk packs 38b are moved counter to the cake transporting direction 14 relative to the non-movable disk packs 38a. This is also known.

The second pusher 31, which only schematically in Fig. 1 . 2 and 11a ) -c) is preferably formed analogous to the first pusher 30. In this case, the second pusher 31 is arranged mirror-inverted to the first pusher 30 with respect to a plane which is perpendicular to the cake transport direction 14.

In particular, when the second pusher 31 is disposed behind the longitudinal cutting frame 29, but the second pusher 31 is preferably formed only as a counter-abutment or abutment and thus much simpler. For example, the second pusher 31 then has a vertical abutment plate, which is mounted movable up and down in the vertical direction, so that the abutment plate from the movement path of the lightweight concrete cake 8 is movable out. In this case, the abutment plate is also preferably immovable parallel to the cake transport direction 14.

This very simple embodiment of the second pusher 31 is possible in particular when the second pusher 31 is arranged behind the longitudinal cutting frame 29 when viewed in the direction of cake transport. As a result, the second pusher 31 does not enter the longitudinal cutting frame 29 and may be formed as a simple abutment plate.

• Wie bereits erläutert, wird der Leichtbetonkuchen 8 mittels der Umsetzanlage zur Querschneideeinrichtung 9 befördert. Zuvor wurde bereits ein leerer Härterost 13 mit darauf aufliegenden Längsleisten 16 mittels einer Hubeinrichtung zur Querschneideeinrichtung 9 befördert und auf den Härterosttransporträdern 12a abgesetzt. Die Transportwellen 15 befinden sich in ihrer unteren Stellung (Fig. 3). Die Längsleisten 16 liegen mit ihrer Leistenunterseite 16b auf den Rostquerbalken 19 auf. Vorzugsweise sind dabei jeweils zwei Längsleisten 16 in Rostlängsrichtung 13a hintereinander angeordnet und durch einen Zwischenraum voneinander beabstandet. Des Weiteren sind die Längsleisten 16 in Rostquerrichtung 13b gesehen zueinander beabstandet bzw. benachbart angeordnet. Dabei ist eine Längsleiste 16 jeweils zwischen zwei Stiften 21 eines Rostquerbalkens 19 angeordnet. Da die Stifte 21 der Rostquerbalken 19 zudem in Rostlängsrichtung 13a zueinander fluchtend angeordnet sind, werden die Längsleisten 16 durch die Stifte 21 exakt parallel zur Rostlängsrichtung 13a ausgerichtet. Zudem sind die zueinander benachbarten Längsleisten 16 aufgrund der Stifte 21 voneinander beabstandet.

The cutting process according to the invention by means of the cutting device 6 according to the invention will now be explained in more detail below:

• As already explained, the lightweight concrete cake 8 is conveyed to the cross-cutting device 9 by means of the transfer plant. Previously, an empty Härterost 13 was already transported thereon with longitudinal strips 16 by means of a lifting device for cross-cutting device 9 and deposited on the Härterosttransporträdern 12a. The transport shafts 15 are in their lower position ( Fig. 3 ). The longitudinal strips 16 rest with their strip bottom side 16b on the grate bar 19. Preferably, in each case two longitudinal strips 16 are arranged one behind the other in the longitudinal direction 13a of the grate and are spaced apart from each other by a gap. Furthermore, the longitudinal strips 16 Seen in rust transverse direction 13b spaced from each other or arranged adjacent. In this case, a longitudinal bar 16 is arranged in each case between two pins 21 of a grate beam 19. Since the pins 21 of the grate bars 19 are also arranged in alignment with each other in the longitudinal direction 13a of the grate, the longitudinal strips 16 are aligned by the pins 21 exactly parallel to the grate longitudinal direction 13a. In addition, the mutually adjacent longitudinal strips 16 are spaced apart due to the pins 21.

As already explained, all longitudinal strips 16 have the same height H ( Fig. 10 ). In addition, the height H is preferably dimensioned so that the longitudinal strip top sides 16a are at the same height as the longitudinal beam upper sides 18a of the two longitudinal beams 18. The strip tops 16a and the longitudinal beam tops 18a are thus arranged flush in the vertical direction. As a result, the hardener 13 is easier to clean than the previously known hardener, in which the strip top are arranged lower than the longitudinal beam tops.

Now the transport shafts 15 are extended ( Fig. 3 ). The transport shafts 15 each pass through one of the inter-bay spaces 20 between two grate bars 19 of the hardener rust 13. When extending the transport shafts 15 also the longitudinal strips 16 are automatically lifted from the Härterost 13 as soon as the transport shafts 15 abut the longitudinal strips 16.

Now, the cross-cutting frame 17 is moved to its lower position, so that the transverse cutting wires 26 span the longitudinal strips 16. Subsequently, the lightweight concrete cake 8 is placed on the longitudinal strips 16 by means of the Umsetzanlage.

Thereafter, in a conventional manner, the transverse cutting of the lightweight concrete cake 8 into individual green concrete moldings 50 by the cross-cutting frame 17 is moved in the vertical direction upwards (in Fig. 11a shown schematically). As a result, the transverse cutting wires 26 become vertical Direction through the lightweight concrete cake 8 pulled from bottom to top. Preferably, they oscillate in their longitudinal direction. As already explained, the cross cutting frame 17 is also preferably inclined to the horizontal during the transverse cutting ( Fig. 5 ) to make a pulling cut. As soon as the transverse cutting wires 26 have passed completely through the lightweight concrete cake 8, the transverse cutting operation is completed.

Then the cross-cut lightweight concrete cake 8 is conveyed to the slitter ( Fig. 11d )). For this purpose, the transport shafts 15 are lowered again and the longitudinal bars 16 with the lightweight concrete cake 8 arranged thereon are deposited again on the hardener 13.

In the context of the invention it is also necessary to dispense with the extension and retraction of the transport shafts 15 during cross cutting. In this case, the cross cutting wires 26 must be made longer accordingly. This is possible due to the hardener rust 13 according to the invention with the longitudinal strips 16 according to the invention, since the longitudinal strip top sides 16b are coplanar with the longitudinal beam upper sides 18a.

The hardener rust 13 together with the cross-cut lightweight concrete cake 8 arranged thereon is conveyed on the harvester transport wheels 12a in the cake transport direction 14 to the longitudinal cutting device 10. For this purpose, the first pusher 30 is in the position or the state in which it is arranged completely outside the movement path of the lightweight concrete cake 8 ( Fig. 11d )). In this position, the Stoßeinrichtungstraggestell 36 together with the disc packs mounted thereon 38a, 38b and preferably together with the drive means for the movable plate packs 38b in its upper position, ie above the cake top 11 b. The lightweight concrete cake 8 with the hardener 13 can thus pass below the Stoßeinrichtungstraggestells 36 and the disc packs 38 a, 38 b mounted thereon. In addition, the lightweight concrete cake 8 passes through with the hardening rust 13 between the vertical base frame beams 35a. It is irrelevant where the first, rear bumper 30 is seen parallel to the cake transport direction 14. Preferably, it is at the same time against the cake transport direction 14 from its front end position in which it is after slitting in its rear end position in which it is located before colliding, proceed. The rear bumper 30 and the lightweight concrete cake 8 are thus moved in opposite directions.

Once the lightweight concrete cake 8 has arrived in the longitudinal cutting device 10, the transport shafts 15 are extended below the hardening rust 13 and the longitudinal strips 16 with the porous concrete cake 8 are lifted again from the hardening residue 13. At the same time preferably also located in front of the longitudinal cutting frame 29 transport shafts 15 are extended. These pass through the interstices 20 of an empty, waiting hardening rust 13, which is also located in front of the longitudinal cutting frame 29.

In the longitudinal cutting device 10, according to the invention, the individual, green concrete shaped bodies 50 collide first. As already explained, vertical cutting gaps between the individual concrete shaped bodies 50 are perpendicular to the cake transport direction 14 or the cake longitudinal direction 8a. These must be closed again prior to longitudinal cutting be to prevent tearing of the corner edges of the concrete moldings 50.

For this purpose, the bumper support frame 36 and the disk packs 38, 38a of the first bumper 30 are moved to the lower position, in which they are arranged in the movement path of the lightweight concrete cake 8. The abutting surfaces 43 of the disk packs 38a, b are then opposite the rear cake end face 11d. The second pusher 31 is also located in the path of movement of the lightweight concrete cake 8. It is located directly in front of the longitudinal cutting frame 29. The longitudinal cutting wires 33 are arranged in the vertical spaces between the lamella plates 41.

Now, the first pusher 30 is moved in the cake transport direction 14, so that the abutment surfaces 43 of the first pusher 30 abut the second cake end face 11 d and the concrete moldings 50 are pushed together so that the cross-sectional gaps are closed and the first cake end face 11 d at the abutment surfaces 43 the second bumper 31 abuts.

For this purpose, the rear bumper 30 is moved in the cake transport direction 14 and pushes the lightweight concrete cake 8 thereby on the longitudinal strips 16 by the longitudinal cutting frame 29 by (longitudinally cutting the lightweight concrete cake. Fig. 11a )). The longitudinal strips 16 thereby move on the transport shafts 15. In addition, the longitudinal cutting wires 33 are pushed through the lightweight concrete cake 8 through. The longitudinal cutting wires 33 can in turn oscillate in their longitudinal direction. In addition, the longitudinal strips 16 pass through between the longitudinal cutting wires 33. There are generated vertical longitudinal gaps, which are perpendicular to the cake width direction 8b and parallel to the cake transport direction 14.

The front pusher 31 moves simultaneously with the lightweight concrete cake 8 in the cake transport direction 14 and thereby supports the lightweight concrete cake 8 during longitudinal cutting.

After slitting the arranged below the lightweight concrete cake 8 Hardener 13 is transported by means of Härterosttransporträder 12a in the cake transport direction 14, which will be discussed in more detail below.

After the lightweight concrete cake 8 has passed the longitudinal cutting frame 29 ( Fig. 11b )), it is stored by lowering the transport shafts 15 on the waiting hardener 13 ( Fig. 11c )). In this case, the transport shafts 15 pass again between the interstices 20 and the longitudinal bars 16 are automatically lifted from the transport shafts 15 and stored on the grate bar 19. Also arranged in front of the longitudinal cutting frame 29 transport shafts 15 are lowered and drive through the interstices between the bays 20 of the hardener rust 13, from which the lightweight concrete cake 8 was lifted before slitting.

The rear bumper 30 is located directly after the longitudinal cutting in the cake transport direction 14 seen in its front end position. In this position, the longitudinal cutting wires 33 are preferably partially penetrated into the lamella plates 41. Now, the rear bumper 30 is moved so far against the cake transport direction 14 until the longitudinal cutting wires 33 are no longer arranged in the lamella plates 41. Then the bumper support frame 36 and the disk packs 38, 38a are again moved to their upper position and the rear bumper device 30 continues to move counter to the cake transport direction 14 until it has reached its rear end position again.

After placing the longitudinally and transversely cut lightweight concrete cake 8 on the hardening material 13, the hardening material 13 is mixed with the transversely and longitudinally cut lightweight concrete cake 8, e.g. by means of the Härterosttransporträder 12a or a traverser (not shown) driven to the curing plant 7 and hydrothermally hardened or autoclaved in autoclave 51. There are individual, hydrothermally hardened or autoclaved pore or Schaumbetonformkörper. If necessary, the front pusher 31 is moved out of the path of movement before removal of the longitudinally and transversely cut lightweight concrete cake 8 together with hardener 13.

At the same time as the longitudinal cutting of the one or first lightweight concrete cake 8, according to the invention, the next light concrete cake 8 is already cross-cut in the cross-cutting device 9 (see Fig. 11a )). And while the rear pusher 30 is moved back after slitting against the cake transporting direction 14, at the same time the next cross-cut lightweight concrete cake 8 is opposite in the cake transport direction 14 for longitudinal cutting procedure (see Fig. 11d )). The lightweight concrete cake 8 is driven through under the rear bumper 30 and the rear bumper 30 moves over the lightweight concrete cake. 8 time. In addition, if necessary, at the same time moves the front pusher 30 in the cake transport direction 14 back to its position in front of the longitudinal cutting frame 29, where it is also outside the trajectory of the first, transversely and longitudinally cut lightweight concrete cake 8 (not shown). If she has passed the lightweight concrete cake 8, she is brought back into the path of movement. This can be done analogously as in the rear bumper 31.

In addition, at the same time for removal of the Härterost 13 together with the transversely and longitudinally cut lightweight concrete cake 8 to the hardening system 7 and transport the cross-cut lightweight concrete cake 8 to Längsschneidrahmen 29 that Härterost 13 which is located behind the longitudinal cutting frame 29, moved in cake transport direction 14 by means of Härterosttransporträder 12a until it is arranged in front of the longitudinal cutting frame 29 (see Fig. 11d )). The hardener 13 is then in waiting position for receiving the next cross and longitudinally cut lightweight concrete cake. 8

Advantage of the cutting unit 6 according to the invention is that the transverse cutting of the subsequent lightweight concrete cake 8 can take place simultaneously with the longitudinal cutting of the previous lightweight concrete cake 8. The longitudinal and transverse cutting is thus decoupled from each other according to the invention. As a result, the cycle times can be significantly reduced. This is ensured in particular by the fact that the rear push device 30 can be brought completely out of the movement path of the lightweight concrete cake 8 and can also be moved in this position against the cake transport direction 14. Moving out of the movement path takes place in that those components, ie in particular the plate packs 38, 38a and the pusher support frame 36, which are arranged during the impact process within the movement path of the lightweight concrete cake 8, are moved out of the movement path.

The rear shock device 30 thus has according to the invention in addition to its front and rear end position, a first state in which they at least Partially arranged in the movement path of the lightweight concrete cake 8 and a second state in which it is arranged completely outside the movement path of the lightweight concrete cake 8. In this case, the rear bumper 30 in its second state opposite to the cake transport direction 14 is movable. So it is then opposite to the cake transport direction 14 movable, while it is outside the path of movement of the lightweight concrete cake 8. For moving and moving the rear pusher 30, it communicates with corresponding, suitable means or the cutting unit 6 has corresponding means.

The solution according to the invention was not readily found. Because the vertical method of the first shock device 30 brings a significantly increased design and cost effort with it. In particular, because the pusher 30 has a relatively high weight due to its drive means. In addition, the cutting unit 6 according to the invention is designed to be a lightweight concrete cake length longer than the known cutting system, which is also disadvantageous and entails increased costs. As a result, some obstacles had to be overcome to get to the invention.

It is also particularly advantageous that the cutting unit 6 according to the invention is suitable both for the production of aerated concrete molded articles with high bulk density (900 kg / dm ³ ) and for the production of aerated concrete molded articles with very low bulk density (100 kg / dm ³ ). Among other things, due to the wide bearing surfaces of the longitudinal strips 16, they do not press in even very soft material.

In addition, the cutting unit 6 according to the invention is energy-efficient and easy to maintain.

It is within the scope of the invention that the longitudinal cutting frame 29 also has a contour cutting blade in a manner known per se. With this, the cake top 11 b is straightened or profiled.

It is also within the scope of the invention to otherwise move the two impact devices 30, 31 out of the path of movement of the lightweight concrete cake 8, e.g. to pivot about a vertical axis or lower into a pit or drive sideways.

Furthermore, it is within the scope of the invention that the front thrust device 31 can not be moved out of the movement path. After slitting the lightweight concrete cake 8 is then raised together with Härterost 13 and transported away ( Fig. 11d )).

It is also within the scope of the invention that the front pusher 31 is disposed behind the longitudinal cutting frame 29. It then serves only as an abutment when colliding and is moved out of the path of movement after colliding. In this case, the front pusher 31 can be easily formed as a simple abutment plate.

If the front pusher 31 is disposed in front of the longitudinal cutting frame 29 and yet formed only as an abutment plate, the cellular concrete cake 8 is already pressed by the longitudinal cutting frame 29 before it hits the front pusher 31 and pushed completely together. In this case, the slitting begins already during the pushing together. After pushing together, the front pusher 31 is moved out of the path of movement.

Claims (22)

Cutting unit (6) for cutting a cut-resistant lightweight concrete cake (8), in particular a pore or foam concrete cake, in lightweight concrete shaped body (50), in particular pore or foam concrete molded body, with a) means (15; 16) for transporting the lightweight concrete cake (8) in a horizontal cake transport direction (14), b) a cross-cutting device (9) for cross-cutting the lightweight concrete cake (8) such that vertical cross-sectional gaps are produced for the cake transport direction (14), c) a longitudinal cutting device (10) for longitudinal cutting of the lightweight concrete cake (8) such that vertical, to the cake transport direction (14) parallel longitudinal gaps are produced, wherein the longitudinal cutting device (10) in the cake transport direction (14) seen in front of the cross cutting device (9) is arranged and a longitudinal cutting frame (29) with at least one longitudinal cutting wire (33), d) a rear bumper (30) seen in the direction of cake transport (14) and a front bumper (31) for colliding the cross-cut lightweight concrete cake (8) prior to slitting such that the cross-sectional gaps are closed, the rear bumper (30) being in the direction of cake transport ( 14) seen from a rear end position in a front end position and vice versa back and forth drivable with drive means (39 a-c) is in communication, characterized in that
the rear pusher (30) in its rear end position in the cake transport direction (14) seen in front of the cross-cutting device (9) is arranged and
the rear bumper (30) comprises components (36; 38a; 38b) disposed within the path of movement of the lightweight concrete cake (8) during the beating operation, wherein
the components (36; 38a; 38b) are movable out of and in the movement path of the lightweight concrete cake (8),
wherein the rear bumper (30) is movable against the cake transport direction (14) while completely out of the path of movement of the lightweight concrete cake (8). Cutting system according to claim 1,
characterized in that
the components (36; 38a; 38b) of the rear pusher (30) which are located in the path of movement when pushed together can be moved out of the path of movement of the lightweight concrete cake (8) by moving vertically upwards. Cutting installation according to claim 1 or 2,
characterized in that
the front pusher (31) in the cake transport direction (14) seen behind the longitudinal cutting frame (29) is arranged. Cutting installation according to one of the preceding claims,
characterized in that
the rear bumper (30) comprises a baffle base (35) which is always located outside the path of movement of the lightweight concrete cake (8) and which, in particular, by means of rollers (37a) on a fixed bumper guide rail (37), parallel to the cake transport direction (14) is movably mounted ago,
wherein preferably the baffle base frame (35) bridges the path of movement of the lightweight concrete cake (8) like a bridge. Cutting system according to 4,
characterized in that
the rear bumper device (30) has a, in particular cuboid, bumper support frame (36), which is mounted reciprocally displaceable in the vertical direction on the baffle base frame (35) and with drive means (40), in the vertical direction relative to the baffle base frame (35). up and down drivable connected. Cutting installation according to one of the preceding claims,
characterized in that
the rear pusher (30) comprises a plurality of lamination packs (38a, 38b) arranged one above the other in the vertical direction and spaced apart, each having a plurality of juxtaposed and spaced apart horizontal louver plates (41), the louver plates (41) each having a free, planar surface Plate end face (41 a) which is perpendicular to the cake transport direction (14), wherein the plate end faces (41 a) of a disk pack (38 a, 38 b) each form an abutment surface (43) of the respective disk pack (38 a, 38 b) for pushing the lightweight concrete cake (8) in which preferably the disk packs (38a, 38b) are respectively mounted on the bumper support frame (36), so that they are non-displaceably connected to it in the vertical direction. Cutting system according to claim 6,
characterized in that
the rear bumper (30) non-movable plate packs (38 a), which are parallel to the cake transport direction (14) immovably with the Stoßeinrichtungstraggestell (36) in communication, and preferably movable laminations (38b), which are parallel to the cake transport direction (14) reciprocally displaceable with the Stoßeinrichtungstraggestell (36) in connection, preferably the movable plate packs (38b) above the non-movable plate packs (38a) are arranged. Cutting installation according to one of the preceding claims,
characterized in that
the means for transporting the lightweight concrete cake (8) into the horizontal cake conveying direction (14) are transport shafts (15) and longitudinal strips (16) resting thereon for receiving the lightweight concrete cake (8)
the transport shafts (15) in the cake transport direction (14) spaced from each other and are arranged adjacent to each other and about a horizontal, the cake transport direction (14) vertical shaft axis (15a) are rotatably mounted and wherein the transport shafts (15) in the vertical direction up and down drivable with Hubantriebsmitteln (24) are in communication, and wherein
the longitudinal strips (16) resting on the transport shafts (15) and on the transport shafts (15) in the cake transport direction (14) are movable. Cutting installation according to one of the preceding claims,
characterized in that
the cutting device (6) comprises means, in particular a har-rowing transport rail (12), for transporting a hardening rust (13) together with the lightweight concrete cake (8) and / or separately from the lightweight concrete cake (8),
wherein preferably the transport shafts (15) have a retracted and an extended position, wherein the transport shafts (15) in their lower position below the movement path of the hardening rust (13) are arranged and are arranged in its upper position above the Härterostes (13). Cutting installation according to one or more of the preceding claims,
characterized in that
the longitudinal cutting wires (33) extend perpendicular to a cake transverse direction (8b) and are preferably inclined vertically or about a horizontal axis perpendicular to the cake transporting direction (14) with respect to the vertical. Cutting installation according to one or more of the preceding claims,
characterized in that
the cross-cutting device (9) has a transverse cutting frame (17) which can be moved vertically up and down, in which at least one transverse cutting wire (26) is clamped, the transverse cutting wires (26) extending perpendicular to the cake transporting direction (14). Cutting method for cross-cutting and slitting a cut-resistant lightweight concrete cake (8), in particular a pore or foam concrete cake (8), into lightweight concrete shaped bodies (50), in particular pore or foam concrete shaped bodies (50),
characterized in that
a cutting device (6) according to any one of claims 1 to 11 is used. Cutting method according to claim 12,
marked by
the following process steps a) cross cutting a first greenest lightweight concrete cake (8) in the cross cutting device (9), b) moving the rear bumper (30) out of the path of movement of the first lightweight concrete cake (8), c) moving the first cross-cut lightweight concrete cake (8) in the cake transport direction (14), wherein the first lightweight concrete cake (8) passes the rear bumper (30) and the rear bumper (30) is preferably moved simultaneously opposite to the lightweight concrete cake (8) d) moving the rear bumper (30) into the path of movement of the first lightweight concrete cake (8) so that the rear bumper (30) is located behind the first lightweight concrete cake (8), e) collision of the first cross-cut lightweight concrete cake (8) by means of the two impact devices (30, 31), f) moving the first, crushed lightweight concrete cake (8) in the cake transport direction (14), wherein the first lightweight concrete cake (8) by the longitudinal cutting frame (29) is pressed so that the longitudinal cutting wires (33) pass through the first lightweight concrete cake (8) g) the first lightweight concrete cake (8) is cut longitudinally while at the same time a second lightweight concrete cake (8) is cross-cut. Cutting method according to claim 12 or 13,
characterized in that
a hardener rust (13) used with a) two mutually spaced, in a longitudinal direction of rust (18 a) extending longitudinal grating beam (18), b) a plurality of grate bars (19), wherein the grate bars (19) extend perpendicular to the grate longitudinal beams (18) in a grate transverse direction (13b) and wherein adjacent grate bars (19) are spaced apart by beam spaces (20), and c) a plurality of longitudinal strips (16) extending in the longitudinal direction of the grate (13a) for receiving the cut-resistant lightweight concrete cake (8), the longitudinal strips (16) being adjacent to one another in the grate transverse direction (13b) and preferably in the grate longitudinal direction (13a) and spaced apart from one another on the grate crossbar (19) rest. Cutting method according to claim 14,
marked by
the following process steps: a) positioning the hardening rust (13) with the longitudinal strips (16) in the transverse cutting device (9), b) lowering the cross-cutting frame (17) over the longitudinal strips (16) so that the transverse cutting wires (26) rest on the longitudinal strips (16), c) positioning the greenest lightweight concrete cake (8) on the longitudinal strips (16), d) raising the cross cutting frame (17) such that the transverse cutting wires (26) are passed through the lightweight concrete cake (8), e) moving the rear bumper (30) out of the path of movement of the lightweight concrete cake (8) and moving the cross-cut lightweight concrete cake (8) in the cake transport direction (14), the lightweight concrete cake (8) passing the rear bumper (30), f) moving the rear bumper (30) into the path of movement of the lightweight concrete cake (8) so that the rear bumper (30) is located behind the lightweight concrete cake (8), g) collision of the cross-cut lightweight concrete cake (8) by means of the two impact devices (30, 31), h) moving the collapsed lightweight concrete cake (8) in the cake transport direction (14), wherein the lightweight concrete cake (8) by the longitudinal cutting frame (29) is pressed so that the longitudinal cutting wires (33) pass through the lightweight concrete cake (8). Cutting method according to one of claims 13 to 15,
characterized in that
the rear pusher (30) when slitting in the cake transport direction (14) moves and pushes the lightweight concrete cake (8) through the longitudinal cutting frame (29). Cutting method according to one of claims 13 to 16,
characterized in that
the components of the rear bumper (30), which are in the movement path of the lightweight concrete cake (8) when colliding and slitting, in particular the baffle base frame (35) with the lamella packages (38a, 38b), after the longitudinal cutting of the movement path of the lightweight concrete cake ( 8) move out and moves the rear bumper (30) in this state against the cake transport direction (14) in its rear end position,
and that preferably while the rear bumper (30) moves to its rear end position, another cross-cut lightweight concrete cake (8) is moved in the cake transport direction (14) and the rear bumper (30) passes. Hardening (13), in particular for a cutting device (6) according to one of claims 1 to 11 and / or a cutting method according to one of claims 12 to 17, with a) two mutually spaced, in a longitudinal direction (13a) extending grate longitudinal beam (18), b) a plurality of grate bars (19), wherein the grate bars (19) extend perpendicular to the grate longitudinal beams (18) in a grating transverse direction (13b) and wherein adjacent grate bars (19) are spaced from each other by interspaces (20), and c) a plurality of longitudinal strips (16) extending in the longitudinal direction of the grate (13a) for receiving the cut-resistant lightweight concrete cake (8), the longitudinal strips (16) being adjacent to one another in the grate transverse direction (13b) and preferably in the grate longitudinal direction (13a) and spaced apart from one another on the grate crossbar (19) rest, wherein the longitudinal strips (16) have a cuboid cross-section, characterized in that
the longitudinal strips (16) have the following dimensions: preferably Height H 16 to 30 mm 18 to 22 mm Width B 16 to 30mm 18 to 22 mm Hardening material (13) according to claim 18,
characterized in that
all longitudinal strips (16) have the same height H,
and in that preferably the longitudinal grate bars (18) each have a planar longitudinal bar upper side (18a) and the longitudinal bars (16) each have a flat strip upper side (16b) and the strip top sides (16b) of all longitudinal strips (16) are coplanar with one another and coplanar with the two longitudinal bar tops (16). 18a). Hardening (13) according to claim 18 or 19,
characterized in that
the longitudinal strips (16) are formed as a hollow profile or solid material. Device (1) for the production of pore or foam concrete moldings (50), with a) a mixing plant (2) for mixing pore or foam concrete fresh mass with filling means (3) for filling the pore or foam concrete fresh mass into an upwardly open casting mold (4), b) A plant for ramming and stiffening of the cellular concrete fresh mass, in particular a heat chamber (5), or for stiffening the foam concrete fresh mass to a greenest pore or foam concrete cake (8), c) means for removing the greenest pore or foam concrete cake (8) from the casting mold (4), d) a cutting unit (6) for transversely and longitudinally cutting the greenest pore or foam concrete cake (8) into individual, greenest pore or foam concrete shaped bodies (50), e) a hardening plant (7) for the hydrothermal hardening of the pore or foam concrete shaped bodies (50),
characterized in that
the cutting unit (6) has the features of one of claims 1 to 11. A process for producing porous or foam concrete shaped articles (50) using a device according to claim 21, comprising the following process steps: a) mixing pore or foam concrete fresh mass, b) pouring the pore or foam concrete fresh mass into the upwardly open casting mold (4), c) ramming and stiffening the aerated concrete fresh mass to the cut-resistant aerated concrete cake (8) or stiffening the foam concrete fresh mass to the cutting-resistant foam concrete cake (8), d) cutting the pore or foam concrete cake (8) according to the method according to one or more of claims 12 to 20, e) hydrothermal curing of the pore or foam concrete moldings (50).

Images