WO2024213582A1 - Method for manufacturing a drainage article, manufacturing device, and drainage article - Google Patents

Abstract

The invention relates to a method for manufacturing a drainage article (10), in particular a channel (11) or a point drain, using a device (100) comprising: a bottom, two side walls and two end walls (101) which form an outer shape of the drainage article (10); and at least one core (102) which forms an inner shape, in particular a drainage surface (19), of the drainage article (10), wherein at least one of the two end walls (101) has an undercut (103) in order to form an extension (12) of the drainage article (10). The method comprises the following steps: - positioning the side walls and the end walls (101) on the bottom so as to form a peripherally closed mould, the undercut (103) of the at least one end wall (101) facing the interior (104) of the mould; - filling the interior (104) of the mould with a flowable material, in particular concrete material, in such a way that the flowable material fills the undercut (103), air and/or the flowable material which accumulate(s) in the undercut (103) during filling being discharged through at least one channel (105) in the end wall (101); and - hardening the liquid material in order to form the drainage article (10) and demoulding the hardened drainage article (10).

Description

Method for producing a drainage article, production device and drainage article

Description

The invention relates to a method for producing a drainage article, a device for producing a drainage article and a drainage article.

Drainage objects, for example in the form of channels, point drains, inlet boxes, shafts or the like, which serve to drain surface water can be manufactured in a variety of ways. The drainage objects are often made from a concrete material which is poured into a formwork from above. For example, a U-shaped channel made of precast concrete is known from JP H 11 291 231 A, during the manufacture of which the precast concrete is poured from above into a formwork that reproduces the U-shaped channel. Furthermore, a tubular component is known from EP 0 009 056 A1 which is formed using concrete mortar. During the manufacture of the component, concrete mortar is poured into a formwork, also from above, and compacted by vibrating or shaking.

Drainage objects very often have protruding structures. These can be designed with a low wall thickness. Such structures can be holding contours for seals, connections for lines, locking pockets or the like. With protruding structures, depending on the orientation of the structure during production, there is the problem that unwanted inclusions of air can occur at positions of pocket-forming geometries of the formwork. A protruding structure of this kind is known, for example, from WO 2017/144501 Al (applicant), which protrudes at the front as a holding contour on a channel body to accommodate a seal. The trapped air leads to a material weakening at the corresponding points, so that when molding or installing the drainage object Material on the structure flakes off or, in the worst case, the structure even breaks.

The invention is therefore based on the object of specifying a method with which drainage objects can be produced with increased quality and improved stability. The invention is also based on the object of specifying a device for producing a drainage object and a drainage object.

According to the invention, this object is achieved with regard to the manufacturing method by the subject matter of claim 1. With regard to the device, the above-mentioned object is achieved by the subject matter of claim 6. With regard to the drainage object, the above-mentioned object is achieved by the subject matter of claim 14.

Specifically, the object is achieved by a method for producing a drainage object using a device with a base, two side walls and two end walls which depict an outer shape of the drainage object, and at least one core which depicts an inner shape, in particular a drainage surface, of the drainage object, wherein at least one of the two end walls has an undercut for forming an extension of the drainage object, wherein the method comprises the following steps:

- arranging the side walls and the end walls on the base such that a circumferentially closed mold is formed, wherein the undercut of the at least one end wall faces the interior of the mold;

- filling the interior of the mould with a flowable material, in particular concrete material, in such a way that the flowable material fills the undercut, wherein air or the flowable material which accumulates in the undercut during filling is discharged through at least one channel, in particular air channel, of the front wall;

- Curing the flowable material to form the drainage object and molding the cured drainage object.

The invention has the significant advantage that drainage objects with protruding contours, such as extensions, can be produced with high surface quality and high stability. This is achieved according to the invention in that in the area of the contour-forming, in particular extension-forming, undercut, the front wall has at least one channel through which air is or can be discharged during filling. In other words, the front wall has a riser through which air is or can be discharged during filling.

Tests have shown that when producing an extension that is intended to protrude laterally on the drainage object, for example, unwanted inclusions of air can occur at positions of pocket-forming geometries, such as the undercut of the front wall. The trapped air or air bubbles lead to a weakening of the material on the extension, which the method according to the invention prevents by using a channel integrated into the front wall. The method is therefore advantageous in that material neither flakes off the extension of the drainage object nor does the extension break. In the method, the undercut is completely filled with the flowable material. This creates a drainage object with a stable extension that also has an increased surface quality. The extension of the drainage object is preferably a holding contour for a seal in order to tightly connect the drainage object, in particular a first channel section, to another drainage object, in particular a second channel section.

As described above, in the method according to the invention, before the filling process, the side walls and end walls are arranged on the base in such a way that a mold that is closed in the circumferential direction is formed. The interior of the closed mold is delimited laterally and downwards by the side walls, end walls and the base. The mold is preferably at least partially, in particular completely, open at the top in order to fill the mold with the flowable material. Alternatively, the mold can be at least partially open at the bottom, in particular have an opening at the bottom in order to fill the mold with the flowable material from below, preferably under pressure. In the context of the invention, the directions "bottom" and "top" refer to the position of the device or the mold during the manufacture of a drainage object. In other words, in the manufacturing position of the mold, for example, the bottom is arranged at the bottom. The opening for filling the mold can be arranged at the top and/or bottom.

At least the side walls and the end walls, and in particular the base, represent the external shape of the drainage object to be produced. In the arranged state, the end walls are preferably arranged opposite one another. Furthermore, in the arranged state, the side walls are preferably arranged opposite one another. The core, which represents the internal shape of the drainage object to be produced, is arranged inside the mold. In other words, the side walls, end walls, base and core form a negative mold for the drainage object to be produced.

The core can be arranged on the floor, in particular directly resting on it. This is the case, for example, when a drainage object is manufactured with an open structure. Alternatively, the core can be arranged so as to be floating between the two end walls. In this case, the core is spaced from the floor in such a way that there is no contact with the floor. In other words, the core is arranged decoupled from the floor.

Alternatively, the base can comprise at least one support device, in particular a support geometry, on which the core is arranged, in particular mounted. This is used, for example, when a drainage object is manufactured with a monolithic structure.

According to the invention, the undercut of the front wall is aligned so that it faces the interior of the mold. As a result, the flowable material flows into the undercut during the filling process in order to form the extension. In the method according to the invention, the mold is preferably filled from above. This enables the mold contour(s) and in particular the undercut of the front wall to be filled by means of gravity. Alternatively or additionally, the mold can be filled from below under pressure. To fill the mold, a flowable, particularly liquid, concrete material that can harden is preferably used as the flowable material. The flowable material is preferably flowable polymer concrete.

After the mold is filled, the filled material hardens to form a solid dewatering object. The hardened dewatering object is then removed from the mold in a molding step.

The method according to the invention can preferably be used to produce drainage objects, such as channels with open or monolithic channel bodies, or point drains. The production of other drainage objects, e.g. inlet boxes, is possible. Furthermore, shafts, shoe scrapers, trough trays, cable distributors, cable ducts or the like can also be produced using the method according to the invention.

Preferred embodiments of the invention are specified in the subclaims.

In a preferred embodiment, the at least one end wall is aligned during arrangement so that the channel rises starting from the undercut. In other words, the end wall is arranged on the floor so that the channel runs essentially upwards. This has the advantage that the air or air bubbles in the undercut escape quickly and easily through the channel and thus through the end wall. Alternatively, the at least one end wall can be aligned during arrangement so that the channel runs sloping or horizontally starting from the undercut.

In a further preferred embodiment, the at least one end wall is aligned during arrangement so that a vertex region of the undercut is located vertically upwards, with the channel adjoining the vertex region. The vertex region preferably forms the highest point of the undercut, at which air can preferably collect, in particular in the form of bubbles. In other words, the vertex region of the undercut is located in the arranged state of the end wall at the Floor vertically at the top, with the channel running from the apex area through the front wall to the outside. The advantage here is that the accumulated air rises and collects at the apex area and is thus completely discharged through the channel. This means that the undercut is completely filled and thus a stable extension of the drainage object to be produced is achieved.

Particularly preferably, the flowable material flows from the undercut into the channel during filling and preferably rises in it. In other words, it is preferable that not only air is discharged during filling. The channel can also be used to hold the flowable material, in particular concrete material, in order to achieve complete filling of the undercut. During or after demolding, the area of the filled material that has solidified in the channel is removed or broken off from the extension of the drainage object.

In one embodiment, an intermediate area between the base and the core is filled with the flowable material during filling, with air and/or flowable material that accumulates in the intermediate area during filling being discharged through at least one further channel, at least through the core. The core can, for example, be arranged at a distance from the base before filling in order to produce a drainage object with a monolithic structure. The advantage here is that in addition to the air in the undercut, air below the core can also escape from the mold. This makes it possible to produce stable and high-quality drainage objects.

The object set out at the outset is further achieved according to the invention by a device according to the independent claim 6. Specifically, a device for producing a drainage object is disclosed and claimed, which has a base, two side walls and two end walls, which are arranged or can be arranged on the base to form a closed form. The device has at least one core, wherein at least one of the two end walls comprises an undercut to form an extension of the drainage object. The at least one end wall has at least one channel for discharging air and/or a flowable material which forms at least one passage through the end wall starting from the undercut.

The device according to the invention is used to produce a drainage object in combination with the described method according to the invention. The drainage object can be, for example, a channel with an open or monolithic channel body, a point drain, an inlet box or the like. Furthermore, the device according to the invention can be used to produce shafts, shoe scrapers, trough trays, cable distributors, cable ducts or the like.

It is possible that the device according to the invention is also used in other processes, for example to produce drainage objects or the like.

The two side walls and end walls, in combination with the core, form a negative form of a drainage object. The side walls, end walls and the base are preferably part of a formwork. The device can therefore also be referred to as a formwork device and the closed form as a formwork form. For example, the formwork form can be open at the top and/or bottom, in particular at least partially, for filling.

The core is arranged inside the mold. The core itself can be arranged on the floor, in particular directly adjacent to it. This is the case, for example, when a drainage object is manufactured with an open structure. Alternatively, the core can be arranged floating between the two end walls. Here, the core is spaced from the floor in such a way that there is in particular no contact with the floor. In other words, the core is arranged decoupled from the floor. Alternatively, the floor can comprise at least one support device, in particular a support geometry, on which the core is arranged, in particular mounted. This is used, for example, when a drainage object is manufactured with a monolithic structure. The core preferably essentially defines a drainage surface. In the case of a gutter, this can correspond to the water-draining inside of the gutter.

According to the invention, the at least one end wall of the device has at least one channel, in particular an air channel, which penetrates the end wall starting from the undercut. The channel is adapted to discharge air that accumulates in the undercut during production or filling of the closed mold. Additionally or alternatively, the channel is preferably adapted to receive a flowable material, preferably concrete material or more specifically polymer concrete material. The drainage object can thus generally be made of concrete, in particular polymer concrete. With regard to the advantages, reference is made to the advantages explained above in relation to the method according to the invention.

In one embodiment of the device according to the invention, both end walls have at least one channel for discharging air and/or for receiving the flowable material. This is the case when at least one extension is to be formed on both end faces of the dewatering object. It is possible that at least one of the side walls, in particular both side walls, also have at least one channel for discharging air and/or for receiving the flowable material. A wide variety of combinations of these are possible, which are within the scope of the invention.

In a preferred embodiment of the device according to the invention, the channel in the front wall runs upwards starting from the undercut. This has the advantage that when the closed mold is filled with flowable material, the air in the undercut escapes quickly and easily through the channel and thus through the front wall. Alternatively or additionally, the channel in the front wall can run downwards starting from the undercut. The channel in the front wall is preferably designed to run vertically or at an angle between 0° and 90°, in particular 45°. The angle is to be understood as referring to a horizontal reference plane. Additionally or alternatively, the channel in the front wall can run horizontally. In a further preferred embodiment, the channel adjoins an apex region of the undercut. The apex region preferably forms the highest point of the undercut, where air can preferably collect. This applies to the state of the front wall arranged on the floor. In other words, the apex region of the undercut is located vertically above when the front wall is arranged on the floor, with the channel running outwards from the apex region through the front wall. Air that has collected when the mold is filled is discharged through the channel in order to completely fill the undercut and thus achieve a stable extension of the drainage object to be produced.

In one embodiment, the channel is funnel-shaped, with the channel widening or narrowing starting from the undercut. Alternatively, the channel can be cylindrical. In other cases, the channel can be formed by a hole in the front wall. Alternatively, the channel can have a shape other than a circular cross-sectional shape, in particular a kidney shape or an elongated hole shape or an approximately rectangular shape. The channel can therefore have different cross-sectional shapes, which can be designed depending on the application and requirement. This increases the usability and the variety of variants of the front wall to form a closed shape.

In a preferred embodiment, the at least one end wall has several channels, in particular air channels, each of which forms one through the end wall starting from the undercut for discharging air and/or for receiving the flowable material. This allows, for example, increased amounts of air to be discharged. In addition, the channels can connect to the undercut at different positions in order to completely discharge the accumulating air. The channels can preferably connect to the undercut next to one another and/or one above the other.

Preferably, the undercut comprises a first and a second wall section, which are substantially perpendicular to one another, wherein the channel or channels penetrate the front wall starting from the first or second wall section. Depending on the application, e.g. the extension of a drainage object to be formed, it is advantageous if the channel or channels the channels connect to the first or second wall section, ie the air is discharged from the front or from above. This increases the versatility of the device. The reference plane described above, to which the rising angle of the channel refers, is preferably normal to the first wall section of the front wall.

In one embodiment, the core has at least one (further) channel for discharging air and/or for receiving a flowable material, which is connected to an intermediate region between the base and the core and forms at least one passage through the core starting from the intermediate region. The core can also have several further such channels. This advantageously allows the area below the core to be ventilated, so that the formation of the shape contours of the dewatering object is improved.

According to the independent claim 14, the invention relates to a drainage object, in particular a gutter, a point drain or an inlet box, which is produced by the method according to the invention. Furthermore, within the scope of the application, a shaft, a shoe scraper, a trough tray, a cable distributor, a cable duct or the like, produced by the method according to the invention or the device according to the invention, is disclosed and claimed.

For advantages of the drainage object, reference is made to the advantages explained in connection with the method or device. Furthermore, the drainage object can alternatively or additionally have individual features or a combination of several features previously mentioned in relation to the method or device.

The invention is explained in more detail below with reference to the accompanying drawings. The embodiments shown represent schematic examples of how the device according to the invention and the dewatering article according to the invention can be designed.

In these show, Fig. 1 is a perspective view of an end wall of an apparatus for producing a dewatering article according to an embodiment of the invention;

Fig. 2 is a detailed view of a cross section of the front wall of the device according to Fig. 1, wherein the channel according to the invention is hidden and an air bubble is enclosed between the dewatering object and the front wall;

Fig. 3 four schematic views of cross sections of the front wall of the device according to Fig. 1 in the region of an undercut;

Fig. 4 is a perspective view of a dewatering article according to an embodiment of the invention, which is manufactured with the device according to Fig. 1;

Fig. 5a-5b a detailed view of a drainage object in the region of a holding contour for a seal according to a first embodiment of the invention;

Fig. 6a-6b a detailed view of a drainage object in the region of a holding contour for a seal according to a second embodiment of the invention;

Fig. 7 is a detailed view of a drainage object in the region of a holding contour for a seal according to a third embodiment of the invention;

Fig. 8 is a detailed view of a drainage object in the region of a holding contour for a seal according to a fourth embodiment of the invention;

Fig. 9 is a detailed view of a drainage object in the region of a holding contour for a seal according to a fifth embodiment of the invention; Fig. 10 is a detailed view of a drainage object in the region of a holding contour for a seal according to a sixth embodiment of the invention; and

Fig. lla-llb a detailed view of a drainage object in the region of a holding contour for a seal according to a seventh embodiment of the invention.

In the following description, the same reference numbers are used for identical and equivalent parts.

Fig. 1 shows part of a device 100 according to the invention for producing a drainage object 10. As can be seen in Fig. 4, the drainage object 10 is a channel 11 for collecting and draining surface water. Other drainage objects are possible.

The channel 11 has two side walls 17 running longitudinally and arranged opposite one another and a channel base 18 lying between them. The channel base 18 is part of a drainage surface 19 which extends longitudinally of the channel 11. Furthermore, the channel 11 has two end faces 21 which each form a longitudinal end and which lie opposite one another. A first of the two end faces 21 comprises a longitudinally projecting extension 12 (see Fig. 4) which extends transversely to the longitudinal direction around the channel base 18 or the drainage surface 19. The extension 12 forms a holding contour for a seal 22 which is arranged on the holding contour. The seal 22 can be seen in Fig. 4 and in Figs. 5a to 10. In Figs. 11a and 11b, the seal 22 is hidden for the sake of simplicity.

In the cross-section according to Fig. 2, for example, it can be seen that the channel 11 to be produced has a recess 23 surrounding the extension 12, into which, for example, a seal 22 is inserted or can be inserted in sections during use. The recess 23 forms a groove that runs radially along the outside of the extension 12. As can be seen in Fig. 4, the extension 12 is U-shaped. Other shapes are possible. The device 100 according to the invention essentially comprises a first end wall 101, which is shown in Fig. 1, a second end wall (not shown) which is arranged or can be arranged opposite the first end wall. The device 100 additionally has two side walls (not shown) and a base (not shown) on which the two side walls are arranged or can be arranged opposite each other. In the arranged state, the side walls and the end walls of the device 100 form a circumferentially closed shape. The shape can be open at the top or bottom depending on the type of filling. More specifically, the side walls and the end walls together form a formwork mold which depicts an external shape of the channel 11 to be produced. In other words, the closed formwork mold forms a negative mold for producing the channel 11. In order to form the drainage surface 19 of the channel 11, the device 100 has a core 102 which is arranged on the base. Alternatively, the core 102 can be arranged at a distance from the floor, ie raised. The core can be provided floating between the end walls of the device 100 or can be arranged, in particular mounted, on a support device of the floor.

As can be seen in Fig. 1 and 2, the first end wall 101 has an undercut 103 for forming the extension 12 of the channel 11. The undercut 103 is essentially a recess in the first end wall 101. In Fig. 2 it can be seen that the core 102 protrudes with its end face into the recess and rests against the first end wall 101. The undercut 103 comprises a first wall section 107 and a second wall section 108, which are essentially perpendicular to one another. The first wall section 107 is aligned vertically in the closed state of the formwork and the second wall section 108 is approximately horizontal. The second wall section 108 preferably has an angle with respect to the first wall section 107 for improved shaping of the extension and thus of the channel 11. The first wall section 107 is arranged transversely to a longitudinal axis of the formwork. The second wall section 108 runs in the direction of the longitudinal axis, i.e. in the longitudinal direction. The undercut 103 comprising the recess is formed as seen in the longitudinal direction of the formwork.

As can be seen from Figs. 1 and 2, a web 109 adjoins the undercut 103, which is formed protruding from the first end wall 101. The web 109 runs around the undercut 103. The undercut 103 and the web 109 form a complementary contour to the extension 12 of the channel 11. In other words, the undercut 103 and the web 109 form a negative contour for forming the extension 12 and the groove of the channel 11 running along the extension 12. The web 109 is arranged on the undercut 103 in such a way that it extends the second wall section 108. The second wall section 108 forms a U-shaped contour.

According to Fig. 2, it is illustrated that the undercut 103 and thus the second wall section 108 have an apex region 106 which is arranged vertically upwards in the manufacturing position of the formwork. In other words, the apex region 106 comprises a high point at which air can collect during production, more specifically when the formwork is filled. In Fig. 2, the schematically illustrated air bubble is shown as an example between the second wall section 108 and the underlying extension 12. As shown in Fig. 2, this leads to a weakening of the material on the extension 12 of the channel 11, i.e. to a reduction in the wall thickness.

In order to prevent such material weakening, the first end wall 101 has a channel 105, in particular a riser, which forms a passage starting from the undercut 103 through the first end wall 101. In other words, the first end wall 101 has an air channel 105 for discharging air and also for collecting flowable material that accumulates in the undercut 103, specifically in the apex region 106, when the formwork is filled. For this purpose, the channel 105 is connected to the apex region 106. The channel 105 forms a free passage starting from the apex region 106 through the first end wall 101 to the outside.

A method for producing the channel 11 is described below, using the device 100 according to the invention. In a first method step, the side walls and end walls of the device 100 are arranged and aligned on the ground in such a way that a circumferentially closed formwork is formed. The formwork can be open at the top or bottom. This depends on the type of filling. The undercut 103 of the first end wall 101 faces the interior 104 of the formwork. Subsequently, in a second method step, the interior 104 of the formwork is filled from above or below with a flowable material, preferably a flowable concrete material, more preferably polymer concrete, such that the flowable material fills the undercut 103. In this process, air that accumulates in the undercut 103 during filling is discharged through the channel 105 of the first end wall 101. Once the accumulated or trapped air has been completely discharged through the channel 105, the flowable material flows into the channel 105 and rises therein.

After filling, in a third process step, the flowable material hardens to form a solid, solidified channel 11 and the hardened channel 11 is formed. Because the flowable material remains in the channel 105 even during hardening, the material also hardens in the channel 105 and forms a tenon 16, which will be discussed in more detail later. During the forming process or after the channel 11 has been formed from the formwork, the tenon 16 is removed from the extension 12 of the channel 11, for example by breaking it off. This process produces a stable extension 12, i.e. without material weakening caused by air inclusion, with a high surface quality.

Fig. 3 shows different schematic embodiments of how the channel 105 of the first end wall 101 can be realized. Specifically, Fig. 3 shows a total of four variants, which are described below starting from the left.

In a first variant shown in Fig. 3, the channel 105 runs from a transition between the first and second wall sections 107, 108 into a receiving space 110, in particular a receiving basin, of the first end wall 101. The receiving space 110 can be a concrete trap. The receiving space 110 is designed such that, on the one hand, air can be discharged and, on the other hand, flowable material emerging from the channel 105 can be absorbed when filling the formwork.

In a second variant, the channel 105 runs from a transition between the first and second wall sections 107, 108, rising upwards through the first end wall 101 to the outside. In other words, according to the second variant, the channel 105 penetrates the first end wall 101 obliquely upwards. The channel 105 can run at an angle between 0° and 90°, preferably 45°, relative to a horizontal, imaginary reference plane.

In a third variant, the channel 105 runs vertically upwards from the second wall section 108, with the inside of the channel 105 being flush with the first wall section 107. In a third variant, the channel 105 runs vertically upwards, as in the third variant, bordering the inside of the second wall section 108 and extending partially into the first wall section 107. As a result, the trapped air is not only discharged at the top through the second wall section 108, but also laterally through the first wall section 107.

All four variants according to Fig. 3 have in common that the channel 105 is connected to the apex region 106 and adjoins it without dead space. As a result, air trapped during a filling process is completely discharged from the apex region 106.

According to Fig. 5a to Fig. 11b, further variants relating to the design or arrangement of the channel 105 are shown by means of pins 16 on the extension 12 of the channel 11, which were produced by the channel 105. The pins 16 show the complementary shape to the respective channel 105. The pins 16 are formed by flowable material, in particular concrete material, which rose up in the channel 105 when the formwork was filled and then solidified.

Fig. 5a and 5b show a pin 16 which is formed on the front side of the extension 12 and runs diagonally upwards. To produce the pin 16, the channel 105 of the associated first end wall 101 runs upwards from the first wall section 107. The channel 105 preferably runs at an angle of 45° relative to a horizontal, imaginary reference plane. The channel 105 preferably adjoins the transition between the first and second wall sections 107, 108. Since the pin 16 is cylindrical, as shown in Fig. 5a, the channel 105 has a continuously circular cross-section. According to Figs. 6a and 6b, a funnel-shaped pin 16 is shown which is formed on the front side of the extension 12 and runs diagonally upwards. The channel 105 widens diagonally upwards starting from the apex region 106 of the undercut 103. The channel 105 preferably adjoins the transition between the first and second wall sections 107, 108. Since the pin 16 is funnel-shaped, it follows that the channel 105 has a, in particular complementary, funnel-shaped course through the first end wall 101.

Further alternative cross-sectional shapes of the pin 16 and thus of the channel 105 of the first end wall 101 are shown in Figs. 7 and 8. According to Fig. 7, the channel 105 has a kidney shape 13 and according to Fig. 8, an elongated hole shape 14. At this point, it is pointed out that the cross-sectional shape of the channel 105 is not restricted to those mentioned above, but other cross-sectional shapes are possible within the scope of the invention.

Fig. 9 shows a tenon 16 which is formed on the front side of the extension 12 and, like the tenons 16 according to Figs. 5a to 8, runs obliquely upwards. In contrast to the aforementioned, the tenon 16 according to Fig. 9 has a material constriction at its root 15. This material constriction is a predetermined breaking point for simplified removal of the tenon 16 during or after the formation of the channel 11 from the formwork, in particular the first front wall 101. This results in the channel 105 having a cross-sectional constriction with a subsequent cross-sectional expansion in the region of the first wall section 107. In cross-section, the tenon 16 has a circular shape.

In Fig. 10, several cylindrical pins 16 are shown, which are arranged on the front side of the extension 12, as shown in Figs. 5a to 8. The associated first end wall 101 has several, in particular smaller, channels 105 for their production, each of which forms a passage through the first end wall 101. In the specific case, the first end wall 101 has three cylindrical channels for discharging air and receiving a cast material, in particular flowable material. The channels 105 are, as can be seen from Fig. 10, arranged next to one another essentially in a horizontal plane. A different arrangement of the channels 105 is possible. Figs. 11a and 11b show another possible arrangement of the channel 105. The pin 16 according to Figs. 11a and 11b is formed on top of the extension 12. This means that the channel 105 of the first end wall 101 connects to the second wall section 108 in the apex region 106 in order to discharge air or to receive the cast material. The pin 16 according to Figs. 11a and 11b is cylindrical, which means that the channel 105 of the first end wall 101 is also cylindrical.

At this point it is pointed out that the features of the embodiments described above can be freely combined with one another within the scope of the invention.

In addition, the following embodiments are disclosed:

A method for producing a drainage object 10, in particular a gutter 11 or a point drain, using a device 100 with a base, two side walls and two end walls 101, which depict an outer shape of the drainage object 10, and at least one core 102, which is arranged on the base and depicts an inner shape, in particular a drainage surface 19, of the drainage object 10, wherein at least one of the two end walls 101 has an undercut 103 for forming an extension 12 of the drainage object 10, wherein the method comprises the following steps:

- arranging the side walls and the end walls 101 on the base in such a way that a circumferentially closed and upwardly open mold is formed, wherein the undercut 103 of the at least one end wall 101 faces the interior 104 of the mold;

- filling the interior 104 of the mold with a liquid material, in particular concrete material, such that the liquid, in particular flowable, material fills the undercut 103, wherein air bubbles which accumulate in the undercut 103 during filling are discharged through at least one channel 105 of the end wall 101;

- curing the liquid material to form the drainage object 10 and molding the cured drainage object 10. A device 100 for producing a drainage object 10, in particular a gutter 11 or a point drain, with a base, two side walls and two end walls 101, which are arranged or can be arranged on the base to form a closed shape, and at least one core 102 arranged on the base, wherein at least one of the two end walls 101 has an undercut 103 to form an extension 12 of the drainage object 10, characterized in that the at least one end wall 101 has at least one channel 105 for discharging air bubbles, which forms at least one passage through the end wall 101 starting from the undercut 103.

list of reference symbols

10 drainage object

11 gutter

12th extension

13 kidney shape

14 slotted hole shape

15 root

16 cones

17 side walls of the gutter

18 gutter bottom

19 drainage surface

21 front sides

22 Seal

23 deepening

100 devices

101 front wall

102 core

103 undercut

104 Interior of the Form

105 channel

106 vertex area

107 first wall section

108 second wall section

109 Steg 110 recording room

Claims

claims 1. Method for producing a drainage object (10), in particular a gutter (11) or a point drain, using a device (100) with a base, two side walls and two end walls (101) which depict an external shape of the drainage object (10), and at least one core (102) which depicts an internal shape, in particular a drainage surface (19), of the drainage object (10), wherein at least one of the two end walls (101) has an undercut (103) for forming an extension (12) of the drainage object (10), wherein the method comprises the following steps: - arranging the side walls and the end walls (101) on the base such that a circumferentially closed mold is formed, wherein the undercut (103) of the at least one end wall (101) faces the interior (104) of the mold; - filling the interior (104) of the mold with a flowable material, in particular concrete material, such that the flowable material fills the undercut (103), wherein air and/or the flowable material which accumulates in the undercut (103) during filling is discharged through at least one channel (105) of the end wall (101); - curing the flowable material to form the drainage object (10) and shaping the cured drainage object (10). 2. Method according to claim 1, characterized in that during arrangement the at least one end wall (101) is aligned such that the channel (105) runs rising, horizontally or falling starting from the undercut (103). 3. Method according to claim 1 or 2, characterized in that during the arrangement the at least one end wall (101) is aligned such that a vertex region (106) of the undercut (103) in vertically upwards, with the channel (105) connecting to the apex region (106). 4. Method according to one of the preceding claims, characterized in that during filling the flowable material flows from the undercut (103) into the channel (105) and preferably rises therein. 5. Method according to one of the preceding claims, characterized in that during filling at least one intermediate region between the base and the core (102) is filled with the flowable material, wherein air and/or flowable material which accumulates in the intermediate region during filling is discharged at least through the core (102) through at least one further channel. 6. Device (100) for producing a drainage object (10), in particular a gutter (11) or a point drain, with a base, two side walls and two end walls (101) which are arranged or can be arranged on the base to form a closed shape, and at least one core (102), wherein at least one of the two end walls (101) has an undercut (103) for forming an extension (12) of the drainage object (10), characterized in that the at least one end wall (101) has at least one channel (105) for discharging air and/or for receiving a flowable material, which forms at least one passage through the end wall (101) starting from the undercut (103). 7. Device (100) according to claim 6, characterized in that the channel (105) in the end wall (101) runs rising or falling from the undercut (103), in particular vertically or at an angle between 0° and 90°, preferably 45°, or horizontally. 8. Device (100) according to claim 6 or 7, characterized in that the channel (105) adjoins an apex region (106) of the undercut (103). 9. Device (100) according to one of claims 6 to 8, characterized in that the channel (105) is funnel-shaped, wherein the channel (105) widens or narrows starting from the undercut (103), or the channel (105) is cylindrical. 10. Device (100) according to one of claims 6 to 9, characterized in that the channel (105) has a shape deviating from a circular cross-sectional shape, in particular a kidney shape (13) or an elongated hole shape (14) or an approximately rectangular shape. 11. Device (100) according to one of claims 6 to 10, characterized in that the at least one end wall (101) has a plurality of channels (105), each of which forms a channel through the end wall (101) starting from the undercut (103) for discharging air and/or for receiving the flowable material, wherein the channels (105) are preferably arranged next to one another and/or one above the other. 12. Device (100) according to one of claims 6 to 11, in particular according to claim 10, characterized in that the undercut (103) comprises a first and a second wall section (107, 108) which are substantially perpendicular to one another, wherein the channel or channels (105) penetrate the end wall (101) starting from the first or second wall section (107, 108). 13. Device (100) according to one of claims 6 to 12, characterized in that the core (102) has at least one channel for discharging air and/or for receiving a flowable material, which is connected to an intermediate region between the base and the core (102) and forms at least one passage through the core (102) starting from the intermediate region. 14. Drainage object (10), in particular a gutter (11), a point drain or an inlet box, manufactured according to a method according to one of claims 1 to 5.