DK180352B1

DK180352B1 - Brick moulding apparatus

Info

Publication number: DK180352B1
Application number: DKPA201970488A
Authority: DK
Inventors: Leimand Henrik; Dyhr Larsen Morten
Original assignee: Fr Petersen Maskf Af 1978 A/S
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2021-01-27
Also published as: DK201970488A1; DE102020120350A1

Abstract

Brick moulding apparatus for moulding bricks, where the brick moulding apparatus comprises a material container placed above a brick moulding table with at least one form cavity with form sides and a back plate which constitute a form side, where the brick moulding table further comprises a brick punching system arranged for punching holes in bricks, where the system comprises a punching die which is arranged for acting towards the back plate, where the punching die comprises punching means which is arranged for punching at least one hole in a brick and where the back plate comprises at least one hole which is complementary to the punching die whereby it is achieved to produce a brick with at least one hole and which look soft-moulded and constitute the same strength as a solid brick.

Description

DK 180352 B1

BRICK MOULDING APPARATUS The present invention relates to a brick moulding apparatus for moulding bricks, where the brick moulding apparatus comprises a material container placed above a brick moulding table which is connected with a drive motor for rotation of the moulding table about an center axis and which moulding table is provided with at least one form cavity with form sides and a back plate which also constitute a form side, where the form cavity and the back plate is arranged for displacement in relation to each other, between a position being aligned with the form cavity and a position not aligned with the form cavity which thereby has an open bottom, wherein the brick moulding apparatus further comprises a stamping system arranged for pressing out the brick from the form cavity when the back plate is in the position not aligned with the form cavity, and interlocking means for interlocking the moulding table and the stamping system ensuring a mutual fixed position between the moulding table and the stamping system while pressing out the brick from the form cavity. The present invention also relates to a method for moulding bricks using the brick moulding apparatus, computer program product comprising software code portions configured for, when run in the memory of a computer, executing the method. Prior art There are various kinds of bricks, produced in various kinds of ways and arranged for various kinds of reasons and purposes. Bricks were originally formed by laying clay in wooden forms. The bricks were then turned out and dried, before they were burned in ovens. To get the bricks out of the forms they were either flooded with water given the bricks a smooth surface, or the clay was rolled in sand before it was laid in the form, giving the

> DK 180352 B1 bricks a sandy and rough surface. As the bricks produced in this way were made by hand they are called hand-moulded bricks. Bricks are now made mechanically by means of brick moulding apparatus comprising brick moulding tables. These bricks are so-called soft-moulded bricks which are the bricks closest in form and shape to the original hand-moulded bricks. Alternatively are bricks made by means of extrusion, where plastic deformable material is pressed against a template and extruded in certain length with the required perforations in terms of form and number of holes to an outer form of a bricks length x width. After the extrusion, the length of plastic deformable material is then cut with wire strings in slices of a bricks height. These bricks are so-called machine-moulded bricks In terms of the visual appearance of the bricks there are also various options for processing the surfaces e.g. by using brushes or structure cylinders. When using the brick moulding apparatus as explained above it has shown that the bricks forms are totally regular when the brick is moulded. It is believed that this is due to the fact that the moulding table is continuously rotating also when the stamping system presses out the brick. Especially when angular shells are formed this causes a specific problem as the two part of an angular shell would not have a completely perpendicular orientation to each other.

However, also rectangular bricks have a misalignment as the bricks could have different sizes and not be truly rectangular stones. It is believed that the problem with form stability and the problem with stones are partly due to the continuously rotation where one could say the bricks are formed "on the fly”.

2 DK 180352 B1 There have been a number of attempt to have the bricks formed with more regular forms.

From DE 10 2006 036 639 A1 an apparatus as described by way of introduction is known. The apparatus according to this prior art does not disclose stepping means which makes it possible to effect a stepwise angular rotation of the stamping system.

Object of the invention One object of the present invention is to obtain bricks where the form stability is increased. Another object of the invention is to obtain a method which is suitable for use in a brick moulding apparatus arranged according to the prior art principle and which may work according to a stop-and-go principle. Description of the invention According to a first aspect of the invention, the above object is achieved with a brick moulding apparatus for moulding bricks of the type mentioned in the introduction and being peculiar in that the brick moulding apparatus further comprises stepping means arranged for stepwise angular rotation of the stamping system about the center axis of the brick moulding table, and that the moulding table and the stamping system while pressing out the brick from the form cavity is not rotating whereby the apparatus works according to a "stop-and- go”-principle. Surprisingly it has been found that a form stability is obtained in the bricks when it is ensured that a mutual fixed position is established between the moulding table and the stamping system while pressing out the brick and simultaneously

1 DK 180352 B1 ensuring that the moulding table and the stamping system is not rotating while pressing out the brick.

One could say that the old system using "on the fly”-principle has been changed into an apparatus working according to a "stop-and-go”-principle. It has been found that the bricks produced with the moulding table arranged in a non-rotating condition during the activation of the stamping system for pressing out the brick make it possible to form bricks which are form stable. Especially, it has shown that angular shells are formed which has a perfectly perpendicular orientation of the two parts of the angular shell. It has also shown that a traditional brick could be obtained with truly rectangular form.

The stepping means is arranged for stepwise angular rotation of the brick moulding table about the center axis of the brick moulding table. This makes it possible for a brick moulding table being a turntable to be able to rotate continuously 360 degrees in e.g. clockwise direction, where there from receiving the material to the ejection of the final formed brick in one option is 180 degrees between filling the form to ejection of the brick. From receiving the material to the ejection of the final formed brick could in another option be less than 180 degrees and from receiving the material to the ejection of the final formed brick could in yet another option be more than 180 degrees. Also 120 or 60 degrees are possible between the filling and the ejection. The brick moulding table at each stepwise angular rotation of the brick moulding table may comprise the same form cavity. This makes it possible to use all possible steps at the brick moulding table for the same process, the same kind of brick, hence shorter angular rotations of the på DK 180352 B1 brick moulding table between operations is possible. A further option, instead of using 180 degrees of the rotation of the brick moulding table, is to use a larger angular part e.g. 270 degrees. The conveyer belt below the brick moulding table onto which the bricks are ejected at obviously have to be placed below the point of ejection.

Stepping means provides various options like e.g. mechanical stepping means or electrical stepping means.

According to a further aspect the brick moulding apparatus is peculiar in that the stepping means comprises mechanical stepping means. Mechanical stepping means is a technical simple solution.

According to a further aspect the brick moulding apparatus is peculiar in that the mechanical stepping means comprises a circular ratchet and a cooperating displaceable tooth, which may be displaced between a position in engagement with the circular ratchet and a position without engagement.

A circular ratchet and a cooperating displaceable tooth is an especially simple technical solution. With this solution it is possible to interlock the stamping system and the moulding table. Hereby only one motor, namely the motor used for rotating the moulding table need to be controlled and stopped while pressing out the bricks.

However, the mechanical solution requires the movement of a heavy weight in form of the stamping system and other associated equipment arranged obn the same frame as the stamping system.

Therefore it is also preferred to use electrical stepping means.

p DK 180352 B1 According to a further aspect the brick moulding apparatus is peculiar in that the stepping means comprises electrical stepping means. The electrical stepping means makes it possible to eliminate the use of the heavy mechanical interlocking system. According to a further aspect the brick moulding apparatus is peculiar in that the electrical stepping means comprises a first controller connected with a first step motor for rotating the stamping system about the center axis and a second controller connected with a second step motor for rotating the brick molding table, which second step motor is the drive motor for rotation of the moulding table about the center axis of the moulding table. By using step motors it is possible with the first and second controller to control the correct mutual position of the stamping system and the moulding table. Hereby it is possible to position the stamping system correctly in relation to a form cavity while pressing out the brick. When using step motors it is possible to effect the stop-and-go principle in a very efficient way. The formation of bricks may be associated with specific adaptation of the bricks, e.g. by providing holes in the bricks or by forming the bricks as shells, which are called brick slips.

According to a further aspect the brick moulding apparatus is peculiar in that the brick moulding apparatus further comprises a brick punching system arranged for punching holes in bricks and that said brick punching system is arranged in fixed relation with the stamping system and for rotation together with said stamping system about the center axis.

, DK 180352 B1 When the brick punching system is arranged in fixed relation with the stamping system it is possible to rotate the stamping system and the punching system with only one drive motor. Moreover, the mutual angular position between the two systems could correspond to the angular movement for a stepping. Hereby the stepping movement may bring a form cavity from a position below the punching system to a position below the stamping system. According to a further aspect the brick moulding apparatus is peculiar in that the brick punching system comprises a punching die which is arranged for acting towards the back plate, where the punching die comprises punching means which is arranged for punching at least one hole in a brick and where the back plate comprises at least one hole which is complementary to the punching die. With this solution the brick will be maintained in the form cavity while material from at least one hole is removed through the back plate. According to a further aspect the brick moulding apparatus is peculiar in that the stamping system and the brick punching system is arranged with a mutual angular position which corresponds to a possible step for the stepwise angular rotation of the stamping system about the center axis. When the angular position between the stamping system and the punching system corresponds to a possible step the stepwise angular rotation becomes especially simple to control.

According to a further aspect the brick moulding apparatus is peculiar in that the stamping system comprises an actuator which is connected with at least one pressing plate for pressing out the brick from the form cavity. The stamping system preferably have a pressing plate having a form corresponding to the form of the form cavity whereby it is possible to press out

8 DK 180352 B1 the brick from the form cavity with a uniform pressure distributed over the surface of the brick.

Holes are defined as being either a bottom hole — a hole which one cannot look through - or a through hole — a hole which one can look through. With at least one hole there are a large variety of options available, whether that is three, four, eight or another number of holes. Bricks are defined as being either a brick or a brick slip. Bricks are known to be found in many different sorts and sizes, for example: 228 x 108 x 54 mm (length x width x height). Similarly are brick slips known to be found in many different sorts and sizes, for example: 228 x 25 x 54 mm (length x width x height). Bricks are further defined as being made of plastic deformable material e.g. a clay-water mixture. Form sides are defining the form of the cavity and hence the form of the brick which at this stage is constituted by plastic deformable material.

This makes it possible to arrange a brick moulding table complete with a punching system at a brick moulding apparatus. One form is the minimum amount of forms however three or four forms are often used simultaneously at each process. With at least one hole is it possible to punch a mortar pocket into the brick, where a mortar pocket is a bottom hole, punched into a part of the brick to put mortar in during bricklaying. When punching the mortar pocket into the brick an equivalent amount of material is pressed through the hole in the back plate. The mortar pocket reduces the use of material for the brick, the weight of the brick and o DK 180352 B1 thereby the cost for transporting the brick. Furthermore, the time for drying and burning the brick is reduced.

The back plate being complementary to the punching die means that the back plate comprises the equivalent number of holes as the punching die is arranged for punching and that the holes are arranged so that the material punched by the punching die is arranged for passing through the holes in the back plate.

Among the options are bricks punched with 6 or 8 holes in two rows.

in another aspect, the present invention also relates to a brick moulding apparatus, where the brick moulding table at every other stepwise angular rotation of the brick moulding table comprises the same form cavity.

This makes It possible to have two different processes arranged at one brick 18 moulding table. An example is a three-step process having 120 degrees between its steps and another three-step process having 120 degrees between its steps, thus fhe moulding table would then have 60 degrees between different processing steps. An option is therefore to set up the brick moulding table for brick slipsuss-pan and for comer brick slips.

in another aspect, the present invention also relates to a brick moulding apparatus, where the punching die further comprises a lid plate in order to close the form when the punching die acts against the back plate.

This makes it possible to keep the brick material, e.g. clay, within the form of the brick when making a bottom hole as the material is not getting pressed out of the form in the opposite direction as the punching die is acting. By closing the form by a lid the material is only able to move in one direction and that is in the direction of the punching and out of the form through the holes in the back plate opposite the punching die.

0 DK 180352 B1 When a through hole is getting punched the pressure is not the same as when a bottom hole, e.g. a mortar pocket, is getting punched, however it keeps the material within the form when the punching die is withdrawn.

In another aspect, the present invention also relates to a brick moulding apparatus, where the punching die comprises a pipe which is arranged for making a hole in a brick and a piston arranged within the pipe which is arranged for pressing the punched material out of the pipe.

This makes it possible to punch a through hole without having to press all the excess material out at once, hence in a first step punching the pipe through the material and in a second step pressing the material out of the pipe. Thereby it is possible to produce a brick which is not convex on the surface and where visually the edges appear sharper.

The punching process could be conducted in several steps or preferably in just one continuously movement.

In another aspect, the present invention also relates to a brick moulding apparatus, where the punching die comprises means which is arranged for punching e.g. square, elongated or preferably circular holes in a brick.

This makes it possible to punch various holes in a brick depending on the purpose of which the brick is produced. Variations are then plenty. Architects and other building designers use from time to time the largest surface of a brick - which is normally where the punches are — at the visible part of the brick.

In another aspect, the present invention also relates to a brick moulding apparatus, where holes are20-30 mm, preferably 23-27 mm, further preferably 25 mm in diameter.

iy DK 180352 B1 This makes it possible to punch various sizes of holes in a brick depending on the purpose of which the brick is produced. Variations are also plenty in this regard, few holes with a larger diameter or many holes with smaller diameter.

In another aspect, the present invention also relates to a brick moulding apparatus, where the punching die comprises means which is arranged for punching exactly three circular holes each of 25 mm in diameter in a brick.

This makes it possible to produce a brick with the same strength as a solid brick, but a brick which reduces time for drying and time for burning, which further reduces weight and reduces about 8% of the material used in a solid brick. The excess material is then recycled and used to new bricks, hence there is a benefit regarding material costs, production cost as well as the working environment.

In another aspect, the present invention also relates to a brick moulding apparatus, where the punching die comprises at least one spring arranged for spring-loading the punching die.

This makes it possible to use springs for the purpose of returning at least part of the punching die to a normal unloaded position out of contact with the brick.

In another aspect, the present invention also relates to a brick moulding apparatus, where the punching die is driven by an actuator.

This makes it possible to use actuators, which is either electrical, pneumatically or hydraulically driven.

In yet another aspect, the present invention also relates to a method for moulding bricks using the brick moulding apparatus, where the method comprises at least the following steps:

12 DK 180352 B1 Step 1: plastic deformable material is supplied to the brick moulding table from the material container above the brick moulding table, Step 2: at least one form cavity with form sides and a back plate which constitute a form side is filled with plastic deformable material constituting a brick, which method further comprises at least the following steps: Step 3: interlocking the rotation of the stamping system about the center axis of the brick moulding table, and the rotation of the moulding table in a mutual fixed position while pressing out the brick from the form cavity and maintaining the moulding table and the stamping system in a fixed angular position while pressing out the brick from the form cavity, thereby working according to a “stop- and-go”-principle.

In a further step the brick is ejected.

This makes it possible to produce a brick In yet another further aspect, the present invention also relates to a computer program product comprising software code portions configured for, when run in the memory of a computer, executing the method.

This makes it possible to execute and run the method automatically.

Drawing The invention will be described in further detail below by means of non-limiting embodiments with reference to the drawing, in which:

Fig. 1 shows a perspective view of Brick moulding apparatus, Fig. 2 shows a view of a brick moulding apparatus seen from above, Fig. 3 shows a view of a brick moulding apparatus seen from above with another position of the conveyor belt, Fig. 4 shows a perspective view of a punching system, Fig. 5 shows punching means for punching holes in a brick,

13 DK 180352 B1 Fig. 6 shows a sectional drawing of the punching means for punching holes in a brick, Fig. 7 shows a back plate for a punching means to punch holes in bricks, Fig. 8 shows a brick with three circular punched holes, Fig. 9 shows punching means for punching a mortar pockets in a brick, Fig. 10 shows a sectional drawing of the punching means for punching mortar pockets in bricks, Fig. 11 shows a back plate for a punching means for punching a mortar pocket in a brick, Fig. 12 — shows a brick with a punched mortar pocket, Fig. 13 — shows a moulding table with two different set ups, Fig. 14 shows a moulding table with one set up, Fig. 15 shows a schematic drawing of a brick moulding apparatus, Fig. 16 shows a schematic view of a brick being produced with a not rectangular form, and Fig. 17 — shows different embodiments of shell-formed bricks.

In the drawing, the following reference numerals have been used for the designations used in the detailed part of the description:

1 Brick moulding apparatus 2 Material container 3 Brick moulding table 4 Form cavity 5 Brick punching system 6 Punching die 7 Punching means 8 Actuator 9 Stepping means 10 Center axis, Brick moulding table 11 Form side

14 DK 180352 B1 12 Conveyer belt 13 Spring 14 Pipe 15 Piston 16 Back plate 17 Circular hole 18 Brick 19 Mortar pocket 20 Elongated hole 21 Form cavity 22 Form cavity 23 First step motor 24 Second step motor 25 Stamping system 26 Circular ratchet 27 First controller 28 Second controller 29 Circular ratchet 31 Pressing plate 32 Tooth 33 Arm 34 Frame 35 Shaft 36 Stamping die 38 Stamping actuator 39 Side length 40 Side length 41 First part (of angular shell) 42 Second part (of angular shell) 43 Angle (between 41 and 42)

DK 180352 B1 Detailed description of the invention Figure 1 shows a perspective view of brick moulding apparatus 1, where a material container 2 is placed above a brick moulding table 3 with form cavities 4. 5 The brick moulding table 3 has a brick punching system 5 with a punching die 6 comprising punching means 7, where the punching die 6 is driven by an actuator

8. The brick moulding apparatus 1 has stepping means 9 arranged for stepwise angular rotation of the brick moulding table 3 about the center axis 10 of the brick moulding table 3. Figure 1 and subsequent figures shows two types of punching means 7 at the same punching die 6. This is merely shown for illustration purposes. During production of bricks there will only be one type of punching means 7 at a punching die 6. Furthermore, Figure 1 illustrates a stamping system 25 which is associated with three pressing plates 31 for pressing out a brick from a form cavity 4. The stamping system 25 comprises stamping die 36 and a stamping actuator 38. Figure 1 also shows a frame 34 on which the stamping system 25 and the punching system 5 are attached. Moreover, a circular ratchet 26 is illustrated. Figure 2 shows a view of a brick moulding apparatus 1 seen from above, where form cavities 4 with form sides 11 are shown and where the brick moulding table 3 at each stepwise angular rotation comprises the same form cavity 4. A conveyer belt 12 is shown below the brick moulding table 3 at the point of ejection when using 180 degrees of the rotation of the brick moulding table 3.

16 DK 180352 B1 Figure 3 shows a view of a brick moulding apparatus 3 seen from above with another position of the conveyor belt 12, where instead of using 180 degrees of the rotation of the brick moulding table 3, a larger angular part is used. Figure 4 shows a perspective view of a punching system 5 with a punching die 6 comprising punching means 7, where the punching die 6 is driven by an actuator

8. The stepping means 9 arranged for stepwise angular rotation of the brick moulding table 3 about the center axis 10 of the brick moulding table 3 is also shown.

Furthermore, Figure 4 shows that the circular ratchet 29 cooperates with a tooth

32. The tooth 32 is movable in vertical direction by actuating means which makes it possible to arrange the tooth 32 in an engagement between teeth on the circular ratchet 29 and another position in which the tooth 32 is out of engagement with the circular ratchet. Figure 5 shows punching means 7 for punching exactly three circular holes 17 in a brick (see figure 8), where springs 13 are arranged for spring-loading the punching die 6 and where a pipe 14 is arranged for making each hole 17 and a piston 15 is arranged for pressing the punched material out of the pipe 14. Figure 6 shows a sectional drawing of the punching means 7. Figure 7 shows a back plate 16 for a punching means 7 for punching exactly three circular holes 17 in a brick (see figure 8) where the holes 17 in the back plate 16 are complementary to the pipes 14 in the punching means 7 and where the back plate 16 constitute a form side 11 of the form cavity 4. Figure 8 shows a brick 18 with three circular punched holes 17.

DK 180352 B1 Figure 9 shows punching means 7 for punching a mortar pocket 19 in a brick (see figure 12), where springs 13 are arranged for spring-loading the punching die 6 and where a lid plate 19 is arranged in order to close the form cavities in the brick moulding table 3 when the punching means 7 is acting against the back plate 16 (see figure 11). Figure 10 shows a sectional drawing of the punching means 7. Figure 11 shows a back plate 16 for a punching means 7 for punching a mortar pocket 19 in a brick (see figure 12), where the elongated hole 20 in the back plate 16 are complementary to the mortar pocket 19 which is punched in the brick 18 and where the back plate 16 constitute a form side 11 of the form cavity

4. Figure 12 shows a brick 18 with a punched mortar pocket 19. Figure 13 shows a moulding table 3 with two different set ups, where the brick moulding table 3 at every other stepwise angular rotation of the brick moulding table 3 comprises the same form cavity 4. The two different form cavities are numbered 21 and 22. Figure 14 shows a moulding table 3 with one set up, where the brick moulding table 3 at each stepwise angular rotation of the brick moulding table 3 comprises the same form cavity 4.

Figure 15 is a schematically view illustrating the brick moulding apparatus 1. A number of elements are omitted in order to only schematically illustrate a brick moulding apparatus 1. Only a number of elements are omitted for clarity. The brick moulding apparatus 1 comprises a stamping system 25 which through an arm 33 is connected to a central frame 34. The central frame 34 is arranged

8 DK 180352 B1 on a shaft 35. The shaft 35 is concentric about the central axis 10 and the stamping system 25 is arranged is arranged rotatable. A first step motor 23 is associated with the frame 34. The first step motor 23 is associated with a first controller 27 for controlling the rotation of the first step motor 23.

The rotatable table 3 is through the shaft 35 connected with a second step motor

24. The second step motor 24 is connected with a second controller 28 for controlling the rotation of the second step motor 24 and thus the moulding table

3.

The step motors 23 and 24 make it possible to have a correct positioning of the stamping system 25 in an annular position where a pressing plate 31 is aligned with a corresponding form cavity 4.

As already illustrated in Figure 1 the stamping system 25 can be arranged on the frame 34, where also a punching system is attached. Figure 16 shows an irregular brick 18. The illustrated is exaggerated in order to illustrate that the brick does not have a true rectangular shape. A side length 39 is longer than the side length 40. This is experienced in bricks 18 made by the traditional "on the fly” principle. Figure 17 illustrates in A and B a brick 18 in form of an angular shell comprising a first part 41 and a second part 42. An angle 43 between the two parts are in the figures A and B larger than 90° respectively lower than 90°. In the Figure C the angle 43 is 90° meaning that the two parts 41 and 42 are perpendicular to each other which is desired. The situations illustrated in A and B are experienced with the "on the fly” principle whereas the angular shell 18 illustrated in Figure C is obtained with a brick moulding apparatus and a method according to the present invention.

Claims

19 DK 180352 B1 PATENT REQUIREMENTS

A brick molding apparatus (1) for molding bricks (18), the brick molding apparatus (1) comprising a material container (2) located above a brick mold table (3) connected to a drive motor for rotating mold table about a center axis (10), and which mold table (3) is provided with at least one mold cavity (4) with mold sides (11) and a back plate (16), which also constitutes a mold side (11), the mold cavity (4) and the back plate (18) being arranged for displacement. relative to each other between a position which is in line with the mold cavity (4) and a position which is not in line with the mold cavity, which thereby has an open bottom, the brick molding apparatus (1) further comprising a piston system (25) which is arranged to express the brick (18) from the mold cavity when the back plate is in the position which is not in line with the mold cavity, and interlocking means (26, 27, 28) for interlocking the mold table (3) and the piston system (25) to ensure a mutually fixed position between the mold table (3) and the piston system, while the brick (18) is pressed out from the mold cavity (4), characterized in that the brick molding apparatus (1) further comprises step means (9) arranged for stepwise angular rotation of the piston system (25) about the center axis ( 10) of the brick mold table (3), and that the mold table (3) and the piston system, while the brick (18) is pressed out of the mold cavity (4), do not rotate, whereby the apparatus operates according to a "stop-and-go" principle.

Brick molding apparatus (1) according to claim 1, characterized in that the step means (9) comprise mechanical step means (26, 29, 30).

Brick molding apparatus (1) according to claim 2, characterized in that the mechanical step means comprise a circular ratchet (26) and a cooperating displaceable toothing (32) which can be displaced between a position in engagement with the circular ratchet (26) and a position without intervention.

20 DK 180352 B1

Brick molding apparatus (1) according to claim 1, characterized in that the step means (9) comprise electrical step means (27, 28).

Brick molding apparatus (1) according to claim 4, characterized in that the electric step means comprise a first control unit (27) connected to a first step motor (23) for rotating the piston system (25) about the center axis (10) and a second control unit (28 ) connected to a second steem motor (24) for rotating the brick mold table (3), which second step motor (24) is the drive motor for rotating the mold table about the center axis (10) of the mold table.

Brick molding apparatus (1) according to any one of the preceding claims, characterized in that the brick molding apparatus (1) further comprises a brick punching system (5) arranged for punching holes in bricks (18), and that said brick punching system ( 5) is arranged in fixed connection with the piston system (25) and for rotation together with said piston system (25) about the center axis (10).

Brick molding apparatus (1) according to claim 6, characterized in that the brick punching system (5) comprises a punching piston (6) adapted to act against the back plate (18), the punching piston (6) comprising punching means (7) which are arranged to punch at least one hole in a brick (18), and wherein the back plate (16) comprises at least one hole complementary to the punching temp (8).

Brick molding apparatus (1) according to claim 6 or 7, characterized in that the piston system (25) and the brick punching system (5) are arranged with a mutual angular position corresponding to a possible step for the stepwise angular rotation of the piston system (25) about the center axis ( 10).

Brick molding apparatus (1) according to any one of the preceding claims, characterized in that the piston system (25) comprises an actuator (8) which is

DK 180352 B1 connected to at least one press plate (31) for squeezing out bricks (18) from the mold cavity (4).

A method of molding bricks by means of the brick molding apparatus (1) according to any one of claims 1 to 9, which method comprises at least the following steps: Step t: plastically deformable material is fed to the brick mold table (3) from the material container (2) above the brick mold table (3), Step 2: at least one mold cavity (4) with mold sides (11) and a back plate (16) forming a mold side (11) is filled with plastically deformable material forming a brick (18), characterized by, that the method further comprises at least the following steps: Step 3: interlocking the rotation of the piston system (25) about the center axis (10) of the brick mold table (3) and rotation of the mold table (3): a mutually fixed position while the brick (18) is pressed out from the mold cavity (4) and holding the mold table (3) and the piston system in a fixed angular position while the brick (18) is pressed out of the mold cavity (4), whereby work is carried out according to a "stop-and-go" principle.

A computer program product comprising software code components configured, when executed in a computer's memory, to perform the method of claim 10.