RU2289506C2 - Method for imparting roughness to surface of cast concrete blocks and apparatus for performing the same - Google Patents

Abstract

FIELD: manufacture of cast concrete blocks, namely apparatuses and methods for imparting roughness to surface of cast concrete blocks.

SUBSTANCE: apparatus 10 for imparting roughness to surfaces and to edges C' of three-dimensional cast concrete blocks C includes surface 12 for supporting blocks having at least two surface zones 17, 18, 19; at least first unit 30, 40, 50 for imparting roughness having set of striking members 34, 44, 54 for imparting roughness to blocks C; transportation unit 60 for moving concrete blocks C along said surface zones having straight front edge 18F and back end edge 17R arranged mutually in parallel and passing along width of motion path of set of concrete blocks transported one near another. Back end edge 17R, 18R, 19R of first surface zone is arranged over adjacent front end edge 18F, 19F of second surface zone for forming step L that raises a little front edge portions C' of concrete blocks C transported along first surface zone. First unit for imparting roughness is spaced by predetermined height over surface for supporting blocks C and practically over back end edge 17R, 18R, 19R of first surface zone 17, 18, 19 for imparting irregular roughness to cast concrete blocks. At transporting blocks incline after achieving preset position over step L and then they fall onto second surface zone just near its straight front edge. Line for imparting roughness to concrete block includes at least two apparatuses according to invention 10A, 10B, 10C, 10D. Method for imparting roughness to concrete blocks is realized in said apparatuses or in line.

EFFECT: possibility for producing cast concrete blocks with irregular roughness of their surface, reduced rejection degree.

25 cl, 6 dwg

Description

This invention relates to the manufacture of molded concrete blocks and, in particular, to a device and method for roughening the blocks so that they have a worn or rough appearance.

The production of cast concrete blocks is well developed and has a high level of automation of technological processes for the production of ordinary rectangular concrete blocks, etc. The molded blocks have a geometrically uniform configuration of a rectangular prism, the surfaces of which are substantially flat, with adjacent surfaces bounded by sharp edges.

Concrete blocks are processed to give them a more natural rough appearance. Since real stone blocks have rounded edges and irregularly shaped surfaces, systems have been created to obtain this effect on cast concrete blocks. But the equipment used to process the blocks turned out to be incompatible with the fully automated handling equipment used in other operations of the block production technology. Currently used block roughening systems are characterized by a significant amount of manual labor and significant costs.

For example, according to one known method, cast blocks are placed in large tumbling drums. These tumbling drums rotate around their longitudinal axis so that the concrete blocks inside them fall on each other and, colliding, cause damage to each other. This method, although it provides a generally satisfactory appearance, requires significant costs due to irreparable damage to concrete blocks. Some blocks are damaged to such an extent that they cannot be used, and therefore they are rejected or recycled. In addition, some drawings made of concrete blocks may include blocks of different sizes, and they need to be sorted and assembled, which takes considerable time. Moreover, if one of the blocks in this figure is damaged more than others, then often the other blocks also become unusable, since the ratio of the blocks must be maintained. Tumbling drum due to the nature of its work needs frequent repairs. In addition, personnel working with tumbling drums have to work in an environment of noise from falling blocks, and injuries due to hazardous work operations and the manual work required for them also often occur. For this work, it is difficult to maintain a permanent staff.

In US patent No. 5133915, issued July 28, 1992, Metten and others, disclosed a surface on which there are many blocks with an interval from each other. A brush-roller moves along the surface of the concrete blocks, which scrapes the surface of the concrete blocks and makes it rough. Although this method has significant advantages compared to the method described above using a tumbling drum, it requires that the concrete blocks have an interval between them for processing their sharp edges. Otherwise, only the top surface will be processed. In addition, the brush-type roller provides a relatively uniform abrasion of concrete blocks, and this is not a desirable result in the case of pavers. Finally, since the concrete blocks are separated from each other by an interval, therefore, the brush can only touch them at a certain speed so as not to displace them. If they move, as a result of this they can adjoin each other, and only the upper surfaces will wear out, and the sharp edges of the block will remain unprocessed. These blocks are usually processed before concrete is aged. The solution according to the specified patent could not provide the desired result, i.e. give concrete blocks irregular roughness.

US Pat. No. 4,147,491 describes a device that imitates an old brick. The device cuts soft clay blanks in the form of rectangular bricks. The bricks are lifted in strict sequence under the rollers, having opposite textured circular protrusions that give a repeating clay shape that mimics an old brick. This shape is attached only along opposite longitudinal edges on one side of the soft clay bricks. Bricks are tilted under the respective rollers, and alternating rollers are tilted to accommodate the print rollers.

An object of the present invention is to provide a device and method for roughening a concrete block which substantially eliminate the disadvantages of the aforementioned prior art.

In accordance with this object, the present invention generally provides a device for roughening at least either the surfaces or the edges of three-dimensional concrete cast blocks. The device comprises a surface on which the blocks are mounted and which has at least two surface sections. At least a first roughening device is provided having a set of impact elements for roughening concrete blocks. A conveyor is provided that moves concrete blocks over surface areas. The device is characterized in that the surface sections have a straight leading edge and a trailing end edge located parallel to each other and passing along the width of the path of the multiple blocks transported next to each other. The rear end edge of the first surface area is located above the adjacent front end edge of the second surface area and creates a step to raise the front edge part of the concrete blocks transported along the first surface area. The first roughening device is located at a predetermined distance above the supporting surfaces for the blocks and essentially above the rear end of the first surface portion to give uneven roughness to the concrete cast blocks - for the raised front edge of each cast concrete block during transportation over the rear end. Cast blocks are tilted when they reach a predetermined position above the ledge, and fall on the second surface area at its direct front edge.

According to another feature of the present invention, a method for roughening parts of three-dimensional concrete cast blocks is provided. According to this method: a plurality of concrete cast blocks is transported by a conveyance means, the blocks being located next to each other and aligned on the supporting surface for the blocks parallel to each other. At least one portion of the supporting surface is inclined and thereby creates a ledge on the rear end edge across the panel track of a plurality of concrete cast blocks located adjacent to each other to raise the leading edge of the concrete blocks transported above the ledge. At least one roughing device is provided, which has a plurality of impact elements and is located at a predetermined distance above the bearing surface for the blocks in front of the rear end edge. The front edge of the concrete blocks adjacent to each other collides with a device for roughening when they are lifted above the ledge by a transporting means. Blocks are tilted when reaching a predetermined position above the ledge.

A preferred embodiment of the present invention, illustrated by examples, is further explained with reference to the accompanying drawings, in which:

Figure 1 is a perspective view of a device for roughening blocks in accordance with the present invention;

Figure 2 is an enlarged vertical projection of the inclined support panels and means for imparting roughness in accordance with the present invention;

Figure 3 is an enlarged perspective view of the implementation of means for imparting roughness;

Figure 4 is a simplified schematic representation of a horizontal projection of a number of devices for roughening concrete blocks;

5 is an enlarged side elevational view of another embodiment of a device for roughening concrete blocks in accordance with the present invention; and

6 is an enlarged side elevational view of another embodiment of a device for roughening concrete blocks in accordance with the present invention.

Figure 1 shows a device for roughening concrete blocks (for example, imitating bricks, paving stones, block-abutment walls, masonry blocks), which is generally indicated by 10. The device 10 comprises a plate 11 having a top surface 12, a front end 13, the rear end 14 and the sides 15 and 16. The upper surface 12 is bounded by rectangular panels 17, 18, 19 and 20. A rectangular panel 17 is located at the front end 13 of the plate 11, and a rectangular panel 20 is located at the rear end 14 of the plate.

Rectangular panels 17, 18 and 19 are attached to the plate 11 in an inclined position relative to the horizontal, and therefore the edge of the front side of the front panels 17 and 18 is lower than their edge of the rear side. The rectangular panel 19 on the plate is flat for the reasons described below. Therefore, according to FIG. 1, the edge of the rear side 17R of the rectangular panel 17 is vertically offset from the adjacent edge 18F of the front side of the rectangular panel 18, and therefore is above it to form a step L. It should be noted that between the edges of the front side and the rear side of the rectangular panels 18 and 19 there is a similar relationship. Rectangular panel 20 is substantially horizontal and coplanar with rectangular panel 19. Its rear side edge 20R is the rear end 14 of plate 11. This invention is not limited to four rectangular panels, and plate 11 may consist of fewer or more rectangular panels. Consecutive rectangular panels arranged in cascade can be in a horizontal position, but not in an inclined one, with a decrease in vertical positioning from the front end 14 of the plate 11 to its rear end 15, and therefore there is a cascade relationship between the rectangular panels.

The support posts 25A and 25B protrude upward from the sides 15 and 16, respectively, of the plate 11 on the opposite sides of the junction of the rectangular panels 17 and 18. Similar support posts 26A and 26B, and 27A and 27B extend upward on the opposite sides of the joints of the rectangular panels 18 and 19 and rectangular panels 19 and 20, respectively.

Each pillar at its upper end has a through hole with a pillow block (not shown) located therein. On the support racks 25A and 25B, on their thrust bearings, a tool 30 for roughening is located. The roughening means 30 has a pair of discs 31A and 31B, removably connected to the supporting rods 32. The drive shaft 33A is attached to the disc 31A, while the other disc 31B is connected to an intermediate shaft of free rotation (not shown), pivotally connected to the upper end of the support strut 25A. The set of sections 34 of the chain links attached to the supporting rods 32 and has at least two connected loop chain links. The support rods 32 pass through the end loop of each section 34 of the chain links. When turning the means 30 for roughening on its longitudinal axis: sections 34 of the chain links will hit predetermined sections of concrete blocks "C" on the plate 11 according to the explanation below. The roughening means 30 is rotated by an electric motor M1 connected to the drive shaft 33A by means of a unit consisting of a belt B1 and a pulley P1. The M1 engine can be an electric motor with an adjustable speed.

Essentially the same roughening means 40 and 50 are pivotally connected between the supporting drains 26A and 26B and 27A and 27B, respectively. The roughening means 40 and 50 contain the same elements as the roughening means 30. But, with reference to Figure 1, similar elements will have the same last digits. For example, the disks 31A and 31B for the roughening means 30 are substantially the same as the disks 41A and 41B of the roughening device 40. Similarly, the disks 51A and 51B of the roughener 50 are substantially the same as the disks 31A and 31B of the roughener 30. But for clarity, components consisting of electric motors and a belt / pulley driving the roughening means 40 and 50 are not shown.

The inclined positioning of the rectangular panels 17 and 18, in which they are cascaded, allows certain parts of the concrete blocks "C" located on the upper surface 12 of the plate 11 to fall under the action of sections 34 and 44 of the chain links of means 30 and 40 to roughen their passage through the panels and, in particular, above the ledges. As shown in FIG. 2: the configuration of the rectangular panel 17 relative to the panel 18 allows only the edge C ′ of the concrete block “C” to be hit by sections 34 of the chain links while it is being transported by the conveyor rods 65 above the step L. When the lower surface of the concrete block “C” raised above the ledge L, the block "C" will bend down and fall on the rectangular panel 18, and its upper surface will not collide with sections 34 of the chain links. With the subsequent passage of the concrete block “C” along the plate 11, there will not be any contact with the sections 34 of the chain links until it again rises on the next ledge. The roughening means 30, 40 and 50 can be positioned in advance with respect to the slab 11 for abrading predetermined parts of the concrete blocks “C”.

Therefore, the inclined configuration of the rectangular panels 17 and 18 allows you to give a roughness only open to the impact of the edge parts of concrete blocks "C". In the depicted embodiment, three roughening means are provided in order to process the concrete blocks “C” placed on the installation to create various effects. The roughening agent 30 is installed with the possibility of collision with the exposed edges C 'of concrete blocks “C” to roughen them and to remove larger pieces of material. The roughening means 40 is set so as to process the edges of the “C” blocks to provide a smoother finish. According to the image: the rectangular panel 19 is flat, and the device 50 for roughening is installed with the possibility of abrasion of the upper surface C "of the blocks" C ".

The roughening means 30, 40 and 50 are driven by an electric motor with a variable speed (not shown) and therefore can rotate at different speeds to collide with concrete blocks "C" with different forces. They can also be operated autonomously. According to Figure 3: the bolt B and the nuts N are mounted on the end chain link of the section 34 of the chain links in order to apply an arbitrary pattern on the concrete blocks “C” upon impact with them.

As shown in figure 1, the device 10 has a conveyor 60 for moving concrete blocks "C" on the panels 17, 18, 19 and 20. The conveyor 60 has a pair of closed circuits 61A and 61B on the sides 15 and 16, respectively, of the plate 11. A closed circuit 61B is mounted on a pair of sprockets 62F and 62R; the sprocket 62R is driven by an electric motor M2 and a unit consisting of a belt B2 and a pulley P2. Closed circuit 61B is mounted on sprocket 63F and is driven by sprocket 63R, and it is connected to the opposite end of axis 64 on which sprocket 62R is mounted. Closed circuits 61A and 61B are connected by rods 65 spaced at the same interval. The rods 65 are in contact with the concrete blocks "C" located on the upper surface 12 of the plate 11 to displace the concrete blocks "C" from its front end 13 to the rear end. The M2 motor can operate at different speeds to provide different speeds to the blocks moving forward.

According to the schematic illustration in FIG. 4: a set of roughening devices for concrete blocks or slabs according to the present invention can be provided sequentially to process different edge surfaces and upper surfaces of concrete blocks “C”. The concrete blocks “C” are first loaded onto the device 10A so that the first side edges are machined by the roughening devices 30A (rougher edge finish) and 40A (smoother edge finish). To clarify: the elements of the device have the same letters (for example, means 30A for roughening the device 10A). The concrete blocks "C" are then sent to the loading plate 100A, on which the pushing rod 101A loads the concrete blocks "C" on the device 10B. Since the device 10B is perpendicular to the device 10A, then the edges of the front side of the concrete blocks “C” will be processed.

After that, the concrete blocks "C" are moved forward to the devices 10C and 10D through the loading slabs 100B and 100C, respectively, for processing on all side edges. A third roughness tool 50D is provided on the device 10D for treating the upper surface of the concrete blocks “C”. This operation is required only once, since all lateral edges of the concrete blocks "C" have the same upper surface. Concrete blocks can be unloaded with a stack of concrete blocks (not shown) by a loading plate 100D at the end of a series of devices. It should be noted that the set of concrete blocks “C” is processed at one time on a number of devices, as a result of which this configuration ensures the continuous production of processed concrete blocks.

The panels forming the supporting surface for the blocks in the device may be three-dimensional. It is also possible to provide a grating surface, as shown under the designation G of one of the panels of device 10B in FIG. 4, as a result of which the concrete particles obtained by processing concrete blocks fall through the grating surface G onto the floor and are not collected on the upper surface of the panels.

Figure 5 shows another embodiment of the device 10, according to which the concrete blocks "C" will be processed by an additional device 60 for roughening, similar to the above-mentioned means 30, 40 and 50 for roughening, but located under the upper surface 12; in the drawing, under rectangular panels 17 and 18. Rectangular panels 17 and 18 in this embodiment are shown separated by a gap G2 and also offset by a step L, so that the lower rear ends of the concrete blocks “C” can fall into the gap G2 and open by abrasion by sections 64 chain links of the roughening device 60. Due to the presence of guides (not shown), rods 65 and closed circuits 61A and 61B will not collide with sections 64 of chain links of device 60 for roughening when moving through gap G2.

Figure 6 shows the device 60 for roughening, located under the upper surface 12 of the device 10 for roughening; the rectangular panels 17 and 18 are not offset by the step L, as a result of which the lower rear surfaces of the concrete blocks passing through the gap G will be abraded by the sections 64 'of the chain means of roughening 60'.

Due to the location of the roughening device 60 under the upper surface 12, crumbs or dust obtained by processing the concrete blocks “C” will not accumulate on the upper surface 12 of the device 10. Roughening agents under the upper surface 12 are used in combination with roughening machines located above the upper surface 12 of the device 10 according to the foregoing, and as a result of this, two opposite sides and edges of the concrete blocks "C" are abraded on the same mouth Royce.

The present invention also includes all obvious modifications to the embodiments of the invention described herein, provided that they are within the scope of the appended claims.

Claims (23)

1. Device (10, 10A, 10B, 10C, 10D) for roughening at least one of the surfaces and edges (C ') of three-dimensional concrete cast blocks (C), comprising a supporting surface (12) for blocks having at least two sections (17, 18, 19, 20) of the surface, at least the first device (30, 40, 50) for roughening, having a set of impact elements (34, 44, 54) for roughening the concrete blocks (C), means (60) transportation for moving concrete blocks (C) on the indicated surface sections (17, 18, 19, 20), characterized in that about these surface areas have a straight leading edge (18F) and a rear end edge (17R) located parallel to each other and passing along the width of the path of the set of blocks transported next to each other, and the rear end edge (17R, 18R, 19R) the first (17, 18, 19) of the sections (17, 18, 19, 20) of the surface is located above the adjacent front end edge (18F, 19F, 20F) of the second section (18, 19, 20) of the indicated sections (17, 18 , 19, 20) surface for the formation of a ledge (L) for raising the front edge part (C ') of concrete blocks (C), transport surface, and the first device (30, 40, 50) for roughening is located at a predetermined distance above the supporting surfaces for the blocks and essentially above the rear end edge (17R, 18R, 19R) the first section (17, 18, 19) of the surface to impart uneven roughness to the concrete cast blocks - on the raised front edge part (C ') of each cast concrete block (C) when transporting the blocks through the rear end edge (17R, 18R, 19R), and cast blocks (C) are tilted, reaching a predetermined position above the ledge (L), and fall on the second section of the two indicated surface sections at its direct front edge. 2. The device (10, 10A, 10B, 10C, 10D) according to claim 1, characterized in that said surface sections (17, 18, 19, 20) are also separated from each other by a gap (G2), while the device (10 , 10A, 10B, 10C, 10D) contains at least an additional device (60, 60 ') for roughening, having a combination of elements (64, 64') for roughening concrete blocks (C), and the additional device (60, 60 ') for roughening is located essentially under the rear end edge (17, 18, 19) of the first surface area for abrasion of the rear end h part (C ') of each concrete block (C) falling into the gap (G2) when leaving the first section of the surface (17, 18, 19). 3. The device (10, 10A, 10B, 10C, 10D) according to claim 2, characterized in that said device (10, 10A, 10B, 10C, 10D) contains additional sections (18, 19, 20) of the surface, while additional sections (18, 19, 20) of the surface are essentially coplanar and separated from each other by an additional gap (G2), said device (10, 10A, 10B, 10C, 10D) having at least one additional device (60, 61 ' ) for roughening, having a set of elements (64, 64 ') for roughening concrete blocks (C), while an additional device (60, 60') for giving The roughness is located essentially under the additional gap (G2) between the surface sections for abrasion of the lower surface (C ') of each concrete block (C) moved over the gap (G2). 4. The device (10, 10A, 10B, 10C, 10D) according to claim 1, characterized in that said surface sections (17, 18, 19, 20) are inclined so that the rear end edge (17R, 18R, 19R) the first portion (17, 18, 19) of the surface is located above the front end edge (18F, 19F, 20F) of the subsequent second portion (18, 19, 20) of the surface. 5. The device (10, 10A, 10B, 10C, 10D) according to claim 4, characterized in that the supporting surface (12) for the blocks consists of inclined three-dimensional panels, resulting in sections (17, 18, 19, 20) of the surface are the top surfaces of the tilted panels. 6. The device (10, 10A, 10B, 10C, 10D) according to claim 4, characterized in that each section (17, 18, 19, 20) of the surface consists of an inclined grating panel (G) for concrete particles to pass through it. 7. The device (10, 10A, 10B, 10C, 10D) according to claim 1, characterized in that the transportation means (60) is in close contact (65) with the concrete blocks (C) for translational movement of the concrete blocks (C) along the supporting surface (12) for blocks from the front end edge to its rear end edge. 8. The device (10, 10A, 10B, 10C, 10D) according to claim 1, characterized in that the device (30, 40, 50) for roughening is an elongated impact rotor mounted horizontally and having a drive shaft (33A, 43A, 53A) at one end, while an electric motor (M1) is connected to the specified drive shaft (33A, 43A, 53A) to impart axial rotation to the rotor around its central longitudinal axis, and the set of impact elements (34, 44, 54) is installed along the working section of the rotor, while the impact elements (34, 44, 54) are flexible and made of material Whose hardness exceeds the hardness of the concrete blocks (C), wherein the striking member (34, 44, 54) have dimensions corresponding to the implementation of abrasion or chipping of concrete blocks (C) are struck thereon by the rotation of the drive shaft (33A, 43A, 53A). 9. The device (10, 10A, 10B, 10C, 10D) according to claim 8, characterized in that the electric motor (M1) is an electric motor with an adjustable speed. 10. The device (10, 10A, 10B, 10C, 10D) according to claim 8, characterized in that the impact elements (34, 44, 54) of the device (30, 40, 50) for roughening are sections of chain links. 11. The device (10, 10A, 10B, 10C, 10D) according to claim 10, characterized in that the sections of the chain links are attached to one or more support rods (32, 42, 52) connected between a pair of disks (31A, 31B, 41A, 41B, 51A, 51B) mounting the rod, and the drive shaft (33A, 43A, 53A) is attached to one disk (31A, 41A, 51A) from among these disks (31A, 31B, 41A, 41B, 51A, 51B), while other disks (31B, 41B, 51B) from among these disks (31A, 31B, 41A, 41B, 51A, 51B) have an intermediate shaft connected to them. 12. The device (10, 10A, 10B, 10C, 10D) according to claim 11, characterized in that the sections of the chain links have at least two mutually connected loop links, each of the support rods (32, 42, 52) passes through the end loop of the set of sections of the chain links, the support rods (32, 42, 52) being connected with the possibility of removal with the disks (31A, 31B, 41A, 41B, 51A, 51B) of the connecting rods. 13. The device (10, 10A, 10B, 10C, 10D) according to claim 12, characterized in that at least one free end loop of the plurality of chain link sections has an impact device (B, N) attached to it. 14. The device (10, 10A, 10B, 10C, 10D) according to item 13, wherein the striking device is a unit consisting of a bolt (B) and a nut (N). 15. The device according to claim 1, characterized in that the means of transportation (60) is a pushing means of transportation, which pushes a set of cast blocks (C) located next to each other, at least two rows of blocks in contact with each other, wherein said cast blocks (C) of the first row from among the at least two rows, falling onto the second surface section (18), open the raised front (C ') part of the transverse edge of the moving concrete cast blocks of the second row from among at least two poisons for impact abrasion device (30, 40, 50) for roughening when it is lifted over the rear end edge (17R). 16. The device (10, 10A, 10B, 10C, 10D) according to claim 7, characterized in that the means of transportation (60) has a pair of motor-driven circuits (61A, 61B) interconnected by a set of pushing rods located at intervals ( 65), while the chains (61A, 61B) are located on opposite sides (15, 16) of the plate (11), as a result of which the pushing rods (65) push the concrete blocks (C) from the front end (13) of the plate (11) to its posterior end (14). 17. The device (10, 10A, 10B, 10C, 10D) according to claim 16, characterized in that the circuits (61A, 61 V) are mounted on driven and idler sprockets (62F, 62R, 63R), which are driven by an electric motor ( M2) with adjustable speed. 18. A line for roughening concrete cast blocks containing at least two devices (10A, 10B, 10C, 10D) according to claim 1, characterized in that one first device (10A) from among the devices (10A, 10B, 10C, 10D) is installed in front of at least one second device (10B) from among the indicated devices (10A, 10B, 10C, 10D), as a result of which concrete blocks (C) moving from one first device (10A) from among the devices (10A, 10B, 10C, 10D) into one second device (10 V) from among these devices (10A, 10B, 10C, 10D), are located so that their side edges (C ') are not abraded on one first device (10A) from among the devices (10A, 10B, 10C, 10D), but are abraded on one second device (10V) from among the devices (10A, 10V, 10C, 10D) . 19. The line for roughening concrete cast blocks according to claim 18, characterized in that the devices installed in series (10B, 10C, 10D) are installed essentially perpendicular to each other, as a result of which the side edges that have been abraded after one device from the numbers of these devices (10V, 10C, 10D) are not subject to abrasion by subsequent ones. 20. The method of roughening the parts (C, C ") of three-dimensional concrete cast blocks (C), characterized in that the following steps are carried out: (I) transport the aggregate of concrete cast blocks (C) using transportation means (6), the blocks being located next to each other and aligned relative to each other on the supporting surface (12) for the blocks (17R), are parallel to each other, and at least one portion of the supporting surface is inclined to form a step (L) on the rear end edge located across the panel t Assy of the specified set of concrete cast blocks placed next to each other, for raising the front edge part (C ') of concrete blocks transported through the ledge, (II) provide at least one device (30, 40, 50) for roughening, having a combination striking elements (34, 44, 54) located at a predetermined distance from the supporting surface for blocks in front of the rear end edge (17R), and (III) by striking device (30, 40, 50) carry out strikes on the front edge parts (C ' ) located next to each other homogeneous concrete blocks (C), when they rise above the ledge (L) by means of transportation (60), while these blocks are tilted, reaching a predetermined position above the specified ledge (L). 21. The method according to claim 20, characterized in that according to step (I), the supporting surface (17, 18, 19, 20) for the blocks has a gap (G2) on the ledge (L) in order to open the lower rear edge to act on it part (C ') of each concrete block (C) in the gap (G2), at the stage (II) use at least one additional additional device (60, 60') for applying a roughness having a set of impact elements (64, 64 ') which are located in a predetermined position under the gap (G2), and in step (III) they impact with the lower rear edge part (C ') of the concrete blocks (C), hen they supplied the means (60) transport, are a break (G2). 22. The method according to claim 20, characterized in that the set of supporting surfaces (17, 18, 19, 20) for the blocks is arranged sequentially, while the untreated edge parts (C ') of the concrete blocks (C) are placed in the front position when they are are transported between successive supporting surfaces (17, 18, 19, 20) for blocks, steps (I), (II) are repeated on each supporting surface (17, 18, 19, 20) for blocks for processing all edge parts (C ' ) of each of the concrete blocks (C). 23. The method according to p. 22, characterized in that it further comprises the step of processing the upper surface (C ') of each concrete block (C) with an additional device (40, 50) for roughening.

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