CZ11294A3 - Process and apparatus for producing drawn tiles, particularly plain tiles - Google Patents

Description

Technical field

The invention relates to a method and apparatus for producing drawn bags. especially beavers, by extruding an endless mass strand into the shape of two back-facing tiles, connected by a bead and a bridge, from which the gripper is cut.

Technical field

&Quot; Plain " means a bag having a substantially rectangular face with a visible edge rounded in a manner similar to a plaster, and provided with one or two retaining noses near the unrounded short edge.

Its production is still carried out both because of the rounding of the front visible edge and secondly because of the necessity of forming a catch nose substantially individually by molding an endless strand in the form of a separate plate with two rear bridges. the retaining noses cut out the cross-section. The bag is not further processed by pressure and is placed on special frames for drying and firing. The method is extremely expensive. The production of bricks on the basis of individual ropes is very time-consuming and laborious and requires, in particular, high costs for special frames and the associated machine handling and storage equipment.

In order to overcome these drawbacks, attempts are currently known to make the plank as a ceramic tile in a twin string, which, however, encounters difficulties due to the need to form retaining noses on the back of the bag. Thus, WO 90/13404 discloses a method for producing plain tiles in which a double bag is produced with three inner connecting bridges and two, i.e., a total of four outer nose beads, and the beads are shortened to the Catching Noses after shortening and trimming the edge. from both sides introduces a double cutting device, consisting of a pair of cutting forks, trimming wires, into the porcine, after having reached the desired position of carrying the nose-like nipples by opening the plate during further transport into the raw material, and

The need for cutting forks in the longitudinal direction is unnecessary. This known method of making plain tiles is unsatisfactory, although the introduction of a shearing device into the double bridge bridges simplifies the production of a substantially higher degree requiring to maintain the tiles by appropriately increasing the increased distance. In this way, the pig, the process, however, is caused by waste and thus also by a corresponding increase in energy consumption. In addition, there is a significant 'reduction' in occupancy. furnace and fortress bags during them. This causes the raw phases due to defects in the bridges directly at the edges of the edges to which side forces are applied.

Further, a method for producing drawn bricks is known from EP 0293 507 A1, in which the nose is also cut off by penetrating a tool into a double strand and this has essentially the same disadvantages as the previously described process.

SUMMARY OF THE INVENTION

The present invention is based on the object of creating a method and also devices by means of which it is possible to produce, for the production of drawn bags, of which in particular beavers, with low energy consumption, continuous production and directly in an endless rope.

This claim 1, claim 4.

the task will be solved in a way or device,

Preferred embodiments are described above in the main in the main dependent

The invention provides a method and apparatus by means of which clearly rationalized and ceramic tile planks (energy-efficient way) can be produced, and can comprise, for a substantial part of their bag making, external connecting bridges, up to the final one, i.e. separation of retaining noses. This overall bonding is beneficial only in the area of complete stabilization of the plates, so that only an intermediate jumper in the middle is required to provide the required material stability. This also minimizes material consumption. Due to the high stability, the tiles can be fired at a slight distance and directly above each other. A further advantage is that the design of the catching noses takes place exclusively outside the enclosed tools, i.e.. This means that the working tool in the space between the connecting bridges _{y can be} minimized to save material and from energy, corresponding to the mass necessary to form the retaining noses.

no need to put bags. This is how they can

Description of the drawings

The individual embodiments of the invention are explained in more detail below with reference to the accompanying drawings.

Here it shows:

giant . 1 schematically beaver IN perspective representation, giant . 2 endless rope Press tool'. to production of plain tiles, leaving giant . 3 section of rope according to giant . 2 in the area seam notch, giant . 4 section of rope according to giant . 2 in the area catch nose, giant . 5 view by section line Fig. 4

Fig. 6 is a top view in the direction of the arrow A in Fig. 5; Fig. 7 is a schematic representation of the procedure for the production of plain tiles; and Fig. 3 is a schematic top view of the representation of Fig. 7.

DETAILED DESCRIPTION OF THE INVENTION.

In Fig. 1, a plaster with gripper noses 2 is shown, which is produced by extruding an endless extruded strand 4 in the form of two rearwardly facing plaques 1, connected by a bead 5 and bridges 6, 12. Before the blaze i is fired, the catching nose 2 is cut out from the wars.

The production is carried out in such a way that the outer beads 5 are made in the form of corresponding retaining noses 2 and a height corresponding to their double height and provided with notches 9 along the connection line to the bag, repeating in length corresponding to the difference between of the retaining noses 2, and before or simultaneously with the shortening and cutting of the round edge 3 of the planer 7, in the area without the notch 9 in the middle in the longitudinal direction and also in the area of the inner end of the retaining nose 2 17 so that a longitudinal groove 13 and a transverse groove 16 are formed, which is particularly evident in Figs. 7, 8.

For this purpose, as shown in FIGS. 7 and 3, the pressing device 7 is provided in the area immediately adjacent to the exit of the extruded strand 4 with a notching tool 10 with a drive 11. extending from the top and bottom of the strand 1 to the displacement path discharged by means of which, as shown in FIG. 3, the cylinder is notched on the war side along its mouth into the back of the bag at 11 spots and at regular intervals

o. on the outer part of its length of planer 1 after deduction of d 1, in the catching nose 2

are pulled out of the feed path area. The beads 5 are made in a hollow form with inner channels 8, the notch 9 extending into the channel 8. distance driven

Furthermore, by means of two pairs of impact knives 14 and 17, drives 15 are provided. 18 and located in the corresponding immediately after leaving the pressing device 2 forms a central longitudinal groove 13 in the bridge 12 in the region of the gripping nose 2 completely passing through the bridge 12 and on the other hand a transverse U-shaped groove 16 completely passing the bridge 1 2. whose transverse threshold indicates the inner end of the catch nose 2 and whose longitudinal bridge cuts out the outer notch 9.

By means of the shearing device 20 with the adjusting device 21, a separation of the strand 1 occurs at a distance 24, and the rounded edge 2 is rounded to the shape of a conventional plain bead 1 also by means of a peripheral shearing device 3.

This process results in the operation of the pig-tailed pig 1, which consists of a double tile, the elements of which are connected for a substantial part of their length by means of at least two, preferably more bridges 6, 12, and can be produced by a rational process known in tiling. The gripping noses 2 are already completely formed in the adobe, attached from the outside and the tools for their production are exclusively limited by this procedure to the height of the bridges 2, to the minimum required construction as well as the height of the two gripping noses. auxiliary jumpers 2, the energy needed to burn, double-skinned piggyback car is generated, the cost of the attached gripper is reflected in the increase in the machine. The beads 5 as fixed bridges to the nose 2, but along the line and consequently also due to the smaller thickness, the possibility of a larger occupancy of the furnace productivity when reduced, the two-sidedly fixed portions for making their connection are not scored and thus also weakened, a fracture line along which the remainder of the bead 5 can break off, as usual technology bridges for tiles. In this case, a notch with a smooth cutting gate is formed from the outside, so that irregular fracture lines along the visible edge are avoided.

Claims (19)

and bridges 6), characterized in that they correspond to the retention means Method for producing drawn bags, in particular beavers, by extruding an endless mass strand (4) in the form of two bags, which are facing each other and connected by bosses (5), the retaining noses (2) are cut out, of the nose (2) and at a height corresponding to twice the height of the catching nose (2) and along their connecting line to the two bags are notched repeatedly along the length corresponding to the difference between the length of the bag and the distance of the catching noses 2); Even by cutting the rounded edge (3) of the bag, the bag is transversely concentrically in the longitudinal direction in a shortening and over the whole of the nibbled noses (2). the pore width of the area * and the inner end region of the seizure Method for manufacturing bags according to claim 1, characterized in that the thickness of a portion of the bead (5) and a notch (9) formed on the back side is provided with a notch (9) of the outer side along the bead (9) a line between the bags and at a length on which the bead (5) is not concentrically formed by a longitudinal groove (13) and a U-shaped transverse groove (16), the transverse portion of the transverse groove (16) forming at the inner end of the catch nose (2) while the longitudinal arms of the transverse groove (16) align with the longitudinal notches (9). t. &. S t Method according to claim 1 or 2, characterized in that the beads (3) are formed with a cavity with an inner channel (8) and the notch (9) extends into the inner channel (8). í s t Apparatus for the production of drawn tows, in particular plain tiles, in particular for carrying out the method according to one of claims 1 to 3, which consists of a pressing device (7) immediately at the mouth exit: characterized in that the crimping device (7) is provided with a notching tool (10) extending transversely to the direction of movement of the strand (41) and in the direction of sliding of the strand (4). transversely across the entire width of the strand (4). pull-out Device according to claim 1, characterized in that the notching tool (10) is movable up and down to the path of displacement of the extruded strand (4 of the device). is ρ r i ρo is no to the controller Apparatus according to a pair of parallel or or 5 characterized by a longitudinal, direction of movement of the claims 4 of the straight coaxial strands (4) and the pair of transverse impact cross-sections U-shaped, the axis of which is the extruded strand (4). outside the length of the knife notch (9) by being of knives (14) of extruded knives (17) which are parallel to the direction of the impact knives (14) and the transverse impact knives (17) are in working position at the inner end of the catch nose Device according to one of Claims 4 to 6, characterized in that the depth of engagement of the notching tool (10) corresponds to the distance of the inner channel (8) from the outer end to the cam (δ). Prague 2 List of reference numbers used 1 hobrovka 2 catch nose 3 rounded edge 4 rope 5 per war 6 medium bridge Pressing equipment 8 inner channel 9 v r u b Notching tools 11 Drive 12 outer bridge, rf · ' 13 longitudinal groove 14 longitudinal impact knife 16 transverse groove 17 shows a transverse impact knife Cutting equipment 21 adjusting device 23 a circumferential cutting device 24 appears laziness