Formwork removal system

Abstract

The invention relates to a formwork removal system comprising: at least one formwork element (1) having a formwork surface (2) for at least partially delimiting a formwork space (3); a driving rod (5) which has a thread (4); and at least one formwork removal element (6) having a through-bore (7) in which an internal thread (8) corresponding to the thread (4) of the driving rod (5) is provided; wherein the formwork element (1) has a through-opening (11) which extends from the formwork surface (2) to a surface (14) opposite thereof and which tapers in this direction, and the formwork removal element (6) is arranged in the through-opening (11) and is supported form-fittingly therein in order to prevent the formwork removal element (6) from being removed via the opposite surface (14).

Description

[0001] STRIPPING SYSTEM

[0002] FIELD OF THE INVENTION

[0003] The invention relates to the field of formwork for the production of components from hardening materials such as concrete.

[0004] STATE OF THE ART

[0005] Systems for formwork of components to be erected from hardened material such as concrete, such as walls, floors or ceilings of a building, comprising at least one formwork element, for example in the form of a formwork panel, are known from the prior art.

[0006] It is also known that after the material to be cured has hardened, the formwork elements must be removed again in order to expose the components cast with the hardening material.

[0007] The problem here, however, is that removing the formwork elements is often only possible with considerable force and with the risk of damaging both the cast components and the formwork elements.

[0008] OBJECT OF THE INVENTION

[0009] The object of the invention is therefore to overcome the described problems of the prior art by providing a formwork removal system which, after the material to be cured has hardened, on the one hand enables the removal of the formwork elements in a particularly simple manner and, on the other hand, almost or completely eliminates the risk of damage to the formwork elements and the cast components.

[0010] A further object of the invention is to provide a method for the formwork and demolding of a formwork space which is to be filled with material to be hardened and which method enables the removal of the formwork elements after hardening largely without damaging them or the hardened components.

[0011] A further object of the invention is to provide a stripping element as a component of the stripping system according to the invention, which facilitates the above-described detachment of a formwork element from the formwork space or contributes to the fact that the detachment can take place essentially without damaging the formwork element or the cured component.

[0012] A further object of the invention is to make the stripping element reusable and to make its use as safe as possible so that incorrect operation can be excluded as far as possible.

[0013] PRESENTATION OF THE INVENTION

[0014] According to the invention, the object is achieved by a formwork system comprising

[0015] - at least one formwork element with a formwork surface for at least partially defining a formwork space,

[0016] - a threaded drive rod

[0017] - at least one stripping element with a through-hole in which an internal thread corresponding to the thread of the drive rod is provided, wherein the formwork element has a through-opening which extends from the formwork surface to a surface opposite thereto and tapers in this direction, wherein the stripping element is arranged in the through-opening and is supported in a form-fitting manner in this in order to prevent the removal of the stripping element via the opposite surface.

[0018] Typically, the formwork element is a formwork panel, usually cuboid in shape. The formwork surface of the formwork element can, but does not necessarily have to, be flat.

[0019] The formwork surface can, for example, also be designed as a curved surface, in particular with concave and convex surface sections.

[0020] The surface opposite the formwork surface typically runs parallel to the formwork surface, especially when the formwork element has a cuboid shape.

[0021] In principle, the shape of the surface opposite the formwork surface can be arbitrary and independent of the formwork surface.

[0022] Typically, the formwork elements or formwork panels are made of coated or painted wood and designed as multi-layer panels, although other materials or a different structure are not excluded.

[0023] According to the invention, a through-hole is arranged in each formwork element, in which a stripping element, also according to the invention, is seated. Depending on the size of the formwork element, several through-holes can also be provided, with a stripping element being arranged in each of the through-holes. According to the invention, a stripping element is supported in a through-hole to prevent removal from the opposite side. This means that the insertion of the stripping element into the through-hole or its removal from it is only possible via the formwork side.

[0024] According to the invention, the support is achieved by means of a form fit, i.e. the clear width of the through-hole in a section closer to the opposite side of the stripping element is smaller than a cross-section of the stripping element.

[0025] While the formwork system according to the invention can typically be used in the production of concrete walls, concrete floors or concrete ceilings, other possible applications are not excluded.

[0026] In principle, the formwork removal system according to the invention can be used wherever hardenable materials are cast into a formwork space defined by formwork elements. The hardenable materials can therefore be, for example, gypsum, resins such as epoxy resin or polyurethane, or materials that solidify thermally upon cooling, such as melts of wax, metal, or plastic.

[0027] Also included are generally materials which are in a liquid, yet to harden state as a mixture of several chemical substances and which harden through a chemical reaction such as polymerization.

[0028] The drive rod, which also forms a component of the stripping system according to the invention, is a commercially available tool. The drive rod must have a thread that corresponds to the internal thread of the stripping element.

[0029] In a particular embodiment of the invention, the through-opening is formed in a stepped manner in longitudinal section.

[0030] This enables a particularly effective form fit.

[0031] A longitudinal section in this sense is a section along the plane that runs in the direction of the taper of the passage opening, typically along the shortest connection between the formwork face and the opposite face of the formwork element. When referred to as a cross-section, this refers to the section perpendicular to the longitudinal section.

[0032] The direction of the taper of the passage opening is also called the stripping direction, since the stripping described below, i.e. the detachment of the formwork element from the formwork space, also takes place in this direction.

[0033] Exactly opposite to this is the driving direction. This is so named because the drive rod described below is inserted, or driven, into the stripping element in this direction.

[0034] In the case of through openings that are rotationally symmetrical at least in sections, the longitudinal section runs along the axis of rotation of the rotationally symmetrical section.

[0035] According to a further preferred embodiment of the invention, the through opening comprises a first section adjoining the formwork surface and a second section adjoining the opposite surface, between which first section and second section a shoulder is formed which realizes the step shape.

[0036] Typically, the two sections can be aligned, merging recesses with different, arbitrary cross-sections. The required form fit, which prevents the stripping element from being removed via the opposite side, is easily achieved in this way.

[0037] In a particularly preferred embodiment of the invention, the first and second sections each have a circular cross-section.

[0038] In this case, the recesses are holes with different diameters, which are particularly easy to produce.

[0039] With a step drill, a longitudinally stepped through hole can be created in just one step.

[0040] In another embodiment of the invention, the first section and / or the second section has a polygonal cross-section.

[0041] With such a cross-section of the through-hole, the same effect in terms of the required form-fit can be achieved as with rotationally symmetrical sections. In addition, however, a form-fit can also be created transverse to the axis of the through-hole, which, with appropriate design of the stripping element, can prevent the stripping element from twisting in the through-hole. The term "polygonal" in this context means at least triangular, i.e., any polygonal structure with at least three corners.

[0042] According to a further embodiment of the invention, it is provided that the formwork element has a guide section and a flange-like end section, wherein the guide section is arranged at least partially in the second section of the through opening and the flange-like end section is preferably arranged entirely in the first section.

[0043] Preferably, the flange-like end section has a cross-sectional area which is larger than the largest cross-sectional area of ​​the second section of the through-opening, so that the stripping element can be pushed into the through-opening via the formwork surface, but cannot be removed again via the surface of the through-bore opposite the formwork surface.

[0044] A particularly stable form fit can be achieved if the shape of the through opening corresponds to the shape of the formwork element, in particular if the first and second sections of the through opening are designed as bores and the guide section and the flange-like end section are cylindrical in shape, i.e. each have a circular cross-section.

[0045] In a further embodiment of the invention, at least the flange-like end section has a polygonal cross-section. A formwork element configured in this way is typically used in combination with a through-opening, which also has a polygonal cross-section.

[0046] However, it should not go unmentioned at this point that such a stripping element can also be used for through holes, i.e. through openings with a circular cross-section, although in this case no anti-twist protection can be achieved via the cross-sectional design.

[0047] According to another embodiment of the invention, the through-opening is V-shaped in longitudinal section, at least in sections, preferably entirely.

[0048] Such a through opening can, from a spatial perspective, either have a wedge shape or be conical.

[0049] In this case, the formwork element is preferably formed at least in sections in a truncated cone or wedge shape.

[0050] According to a further embodiment of the invention, the formwork element can also be spherical.

[0051] This embodiment creates a particularly universally applicable formwork element which is particularly self-centering, whereby the orientation of the through-hole must be aligned parallel to the direction of advance in order to be able to insert the drive rod through the through-hole.

[0052] According to a further preferred embodiment of the invention, at least one securing element is provided which fixes the stripping element in its position in the through opening of the formwork element against rotation.

[0053] This design is particularly useful in combination with rotationally symmetrical stripping elements to counteract the torque that inevitably acts on the stripping element due to the reaction principle when screwing the drive rod into the stripping element.

[0054] The at least one securing element can be designed as a mandrel visible in the longitudinal section of the stripping element.

[0055] The mandrel and stripping element can be constructed as a single piece. The mandrel on the stripping element can be positioned so that it engages with the step-shaped recess of the passage opening.

[0056] With regard to the exact shape of the securing element, instead of a mandrel, for example, wing-shaped securing elements such as a cutting edge which cuts into wall sections of the through-opening of the formwork element or combinations of such wings with mandrels are just as much encompassed by the invention as any other geometric structure which counteracts a torque such as the one just described.

[0057] Furthermore, the at least one securing element can also be designed as a surface structure that increases the friction between the stripping element and the through opening, such as a knurling or a cord on the stripping element.

[0058] Instead of a geometric structure on the stripping element cutting or drilling into the through-opening of the formwork element, the securing element can also be implemented by an adhesive or welded connection introduced between the stripping element and the through-opening of the formwork element.

[0059] Alternatively, according to a further embodiment of the invention, the at least one securing element may be a metal pin or a screw via which the stripping element is connected to the formwork element.

[0060] For this purpose, in particular the described flange-like end section of the stripping element can be provided with holes through which the fixing to the formwork element can be carried out.

[0061] According to a further preferred embodiment of the invention, a covering or closing element is provided which closes the end of the through-bore which is closer to the formwork surface.

[0062] Such a cover or closure element ensures a substantially flush closure of the through opening in the formwork element, creating a smooth, flawless formwork surface. The surface of the formwork space to be filled with curing material is thus also smooth in the area of ​​the through opening of the formwork element, which is important, for example, for exposed concrete.

[0063] Furthermore, the covering or closing element prevents undesired penetration of the material to be hardened into the through-opening of the formwork element and / or into the through-bore of the stripping element as long as the material to be hardened is still liquid.

[0064] According to a further embodiment of the invention, a plurality of formwork elements are provided which jointly delimit the formwork space at least partially, preferably completely, wherein each formwork element has at least one through-opening in which a stripping element is arranged.

[0065] Especially with large formwork spaces and, consequently, large formwork areas, it is advantageous to insert several stripping elements into one formwork element, or at least one stripping element into each formwork element. After the material to be cured has hardened, this allows for a more gentle removal of the formwork elements from the formwork space.

[0066] In particular, since the material to be cured is still liquid when poured into the formwork, it must be ensured that the material to be cured cannot escape from the formwork at any point. Since the formwork elements, as already described, are typically plane-parallel panels, this can usually only be achieved if several formwork elements are used together to define the formwork space in such a way that no liquid material to be cured can escape from the formwork space at any point.

[0067] Also included in the invention is a method for formwork and demolding of a formwork element at least partially delimiting a formwork space, comprising the following steps:

[0068] - arranging a stripping element with a through hole and an internal thread in a through opening of the formwork element tapering from one formwork surface of the formwork element towards an opposite surface of the formwork element - positioning the formwork element to delimit the formwork space by the formwork surface

[0069] - filling the formwork space with a material to be hardened, preferably concrete,

[0070] - hardening of the material to be hardened,

[0071] - inserting a drive rod with thread in a driving direction into the through hole of the stripping element over the surface of the formwork element opposite the formwork surface and rotating the drive rod when the thread engages with the internal thread of the stripping element,

[0072] - direct or indirect contact of the hardened material with the end section of the drive rod,

[0073] - continue turning the drive rod and detaching the formwork element from the formwork space by moving the formwork element against the direction of advance.

[0074] The method according to the invention is typically carried out on site, e.g. at a construction site.

[0075] The required passage opening(s) in the formwork elements can either be prefabricated or manufactured on site, the latter case having the advantage that conventional formwork elements can be used.

[0076] It should be noted that the production of the through opening(s) does not constitute a process step of the process according to the invention.

[0077] On the other hand, a separate method step can be provided after the dismantling element has been arranged in the through-hole, in which the covering or closing element is arranged in the through-hole in such a way that penetration of the material to be hardened into the through-hole of the dismantling element is prevented.

[0078] Preferably, this cover or closure element is used to close the passage opening flush with the formwork surface.

[0079] Regarding the last step of the process, it should be noted that the movement of the formwork element against the direction of advance is the result of the drive rod being screwed into the stripping element and therefore does not require any additional interaction by the user.

[0080] The invention further comprises a stripping element with a through hole including an internal thread, a guide section and a flange-like end section, wherein the guide section and the flange-like end section each have a circular cross-section, for use in a stripping system according to the present invention.

[0081] The stripping element itself is subject to significant mechanical stress due to the forces described above during the stripping process, as well as potentially chemical stress due to an aggressive material that is being cured. It is therefore a wear part that can be treated separately as an essential component of the system according to the invention.

[0082] Typically, the formwork element is made of a durable material, such as metal. Depending on the intended use, this may be a specially alloyed metal. BRIEF DESCRIPTION OF THE FIGURES

[0083] The invention is explained in more detail below using exemplary embodiments. The figures are exemplary in nature, intended to illustrate the inventive concept, and are not to be understood as limiting or even as a complete representation of the invention.

[0084] Showing:

[0085] Fig. 1 shows a formwork element with a passage opening comprising a shoulder, as used in the system according to the invention according to Figures 8 to 11,

[0086] Fig. 2 a formwork element with a V-shaped passage opening in longitudinal section,

[0087] Fig. 3 a formwork element with a longitudinal section through a V-shaped opening,

[0088] Fig. 4 a formwork element comprising a guide section, a flange-like end section and a mandrel as a securing element,

[0089] Fig. 5 a formwork element in the shape of a truncated cone,

[0090] Fig. 6 a formwork element comprising a guide section, a flange-like end section and a plate-shaped cover or closure element

[0091] Fig. 7 a longitudinal section of the variant of the formwork element according to Fig. 2 including a longitudinal section of a truncated cone-shaped stripping element,

[0092] Fig. 8 shows an embodiment of a formwork stripping system according to the invention with a cap-shaped covering or closing element in the paneled state, Fig. 9 shows an embodiment of a formwork stripping system according to the invention with a cap-shaped covering or closing element in the at least partially stripped state,

[0093] Fig. 10 shows an embodiment of a formwork system according to the invention with a plate-shaped cover or closure element in the formwork state,

[0094] Fig. 11 shows an embodiment of a formwork removal system according to the invention with a plate-shaped covering or closing element in the at least partially removed state.

[0095] WAYS OF IMPLEMENTING THE INVENTION

[0096] The following detailed explanations of the figures explain the idea of ​​the invention in more detail and are intended to contribute to an understanding of the inventive idea, but in no way limit it or even represent it as exhaustive.

[0097] Figures 1 to 3 show different, preferred embodiments of a passage opening 11 in a formwork element 1.

[0098] Fig. 1 shows the formwork element 1, which comprises a formwork surface 2 and a surface 14 opposite this formwork surface 2. Also shown is the through-opening 11, which comprises a first section 12 adjoining the formwork surface 2 and a second section 13 adjoining the opposite surface 14. The first section 12 and the second section 13 thus form a shoulder 15. The sections 12 and 13 can have either a polygonal or a circular cross-section. Fig. 2 shows a further embodiment of the formwork element 1 described above, but with a through-opening 15a that is V-shaped in longitudinal section. Viewed spatially, this shape of the through-opening 11 forms a clear truncated cone 22a.

[0099] Fig. 3 shows a further embodiment of the formwork element 1 described above, with a first section 12 and a second section 13. However, the through-opening 11 is only partially V-shaped, i.e., not entirely. Specifically, the first section 12 is V-shaped.

[0100] Figures 4 to 6 show different embodiments of a formwork element 6.

[0101] Fig. 4 shows a formwork element 6, with a cylindrical guide section 9 and a flange-like, also cylindrical end section 10. At least the guide section 9 is provided with a through-bore 7 with a first opening 23a, which through-bore 7 has an internal thread 8.

[0102] A mandrel 16 projects from the flange-like end section 10 parallel to the cylinder axis and in the direction of the guide section 9.

[0103] The formwork element 6 designed in this way is typically used in a formwork element 1 as shown in Fig. 1, with preferably but not necessarily circular cross-sections of the first and second sections 12.

[0104] When inserting the stripping element 6 into the

[0105] Through the through opening 11, the mandrel 16 can penetrate into the shoulder 15, whereby the stripping element 6 is secured against twisting in the through opening 11.

[0106] Fig. 5 shows a further embodiment of the stripping element 6. This is designed as a truncated cone 22. The stripping element 6 comprises a first end face 24a and, opposite this, a second end face 24b (not visible), as well as a through-bore 7 with an internal thread 8.

[0107] Fig. 6 shows stripping element 6 as shown in Fig. 4, but without mandrel 16 but with a plate-shaped cover or closure element 18. Clearly visible are bores 20 in the flange-like end section 10 of the stripping element 6 as well as in the cover or closure element 18, via which a rotation lock can be created by means of securing elements 16, typically screws or nails 17, in which the screws or nails 17 are driven through the bores 20 into the shoulder 15 of a through opening 11 of a formwork element 1.

[0108] Such a formwork element 6 with screws or nails 7 as securing elements 16 is shown in Figures 9 and 10.

[0109] Fig. 7 shows longitudinal sections of the truncated cone-shaped stripping element 6, as shown in Fig. 5, and the formwork element 1 shown in Fig. 2, with which the truncated cone-shaped stripping element 6 corresponds. The form fit between the stripping element 6 and the through-opening 11 is particularly stable here, since the V-shaped through-opening 11 forms exactly the spatial negative of the truncated cone-shaped stripping element 6.

[0110] Figures 8 to 11 show embodiments of the stripping system according to the invention, wherein Figures 8 and 10 show the stripping system in the paneled state and Figures 9 and 11 show it in the partially stripped state.

[0111] Furthermore, Figures 8 and 9 show the cap-shaped covering or closure element 18, which is preferably made of plastic, and Figures 10 and 11 show the plate-shaped covering or closure element 18, which is preferably made of metal.

[0112] The plate-shaped cover or closure element 18 shown in Figures 10 and 11 is particularly suitable for exposed concrete, since it closes the passage opening 11 flush with the formwork surface 2 and thus leaves a smooth surface on the formwork space 3 filled with hardened material 19 after the formwork element 1 has been detached from the latter.

[0113] With regard to the other components of the formwork system according to the invention shown in Figures 8 to 11, the representations in Figures 8 to 11 do not differ, which is why they are expediently described together below.

[0114] The above-mentioned figures show the stripping system according to the invention, comprising the stripping element 6 according to Fig. 6, which is arranged in a form-fitting manner in the through opening 11 of the formwork element 1.

[0115] Also shown is a formwork space 3 already filled with a material 19 to be hardened, wherein only one formwork element 1 is shown on the left side of the formwork space 3. There, the formwork element 1 delimits the formwork space 3 with the formwork surface 2. Of course, the formwork space 3 is also delimited, for example by another formwork element (not shown), from the right side and, for example, by the subsurface (not shown) also from below, so that the material 19 to be hardened, which is still liquid when filled, cannot escape from the formwork space 3.

[0116] The stripping element 6 can be held in this position in the through opening 11 of the formwork element 1 and secured against rotation by the securing elements 16, which are designed as screws or nails 17 in Figures 8 to 11.

[0117] While the opening 23a of the through-bore 7 of the stripping element 6 remains open, a second opening 23b of the through-bore 7 of the stripping element 6 can be closed by the covering or closing element 18 in the form of a cap, preferably made of plastic.

[0118] Also shown in Figures 8 to 11 is a drive rod 5, which is shown in a position inserted into the stripping element 6.

[0119] The drive rod 5 has a thread 4, which engages with the internal thread 8 of the stripping element 6. The drive rod 5 is driven into the stripping element 6 by rotation in a forward driving direction 21 until the drive rod 5, with an end portion 5a encompassed by it, contacts the cover or closure element 18 and, via this, the formwork surface 2, which simultaneously forms the surface of the formwork space 3.

[0120] If the drive rod 5 is rotated further, a force is generated in the advance direction 21, which acts on the point where the end section 5a of the drive rod 5 contacts the cover or closure element 18. The counterforce to this force acts on the stripping element 6, and since this is arranged in a form-fitting manner in the through opening 11, this counterforce is diverted to the formwork element 1.

[0121] This counterforce is increased by further screwing in the drive rod 5 until the formwork element 1 detaches from the formwork space 3, which is now filled with hardened material 19, and moves away from the formwork space 3 in a stripping direction 21a. This state is, as already mentioned, shown in Figures 9 and 11, where the formwork element 1 and the formwork space 3 consisting of hardened material 19 are already spaced apart from each other.

[0122] A method according to the invention for formwork and stripping the formwork space comprises the steps described in more detail below.

[0123] In a first step, the stripping element 6 with the through-hole 7 and the internal thread 8 is arranged in the through-hole 11 of the formwork element 1 from the side of the formwork surface 2 in such a way that the through-hole 7 of the stripping element 6 and the through-hole 11 of the formwork element 1 are arranged in alignment and, for example, the flange-like end section 10 of the stripping element 6 contacts the shoulder 15 or the stripping element 6 designed as a truncated cone 22 contacts the transition 15a, which is V-shaped in longitudinal section and in this case designed as a clear truncated cone 22a, via a conical surface 22b and limits the insertion depth of the stripping element 6 into the through-hole 11 by the respective contact.

[0124] In a particular embodiment of the invention, the stripping element 6 is then connected to the formwork element 1, preferably by means of securing elements 16 designed as metal pins or screws 17. As a result, the stripping element 6 is fastened in the formwork element 1, as shown in the upper illustration of Figures 1 and 2.

[0125] In the next step, the through-hole 7 of the stripping element 6 is closed in the region of the second opening 23b of the through-hole 7, wherein the second opening 23b is arranged in the advance direction 21 after the first opening 23a of the through-hole 7.

[0126] Then, the formwork element 1 is positioned to define the formwork space 3 by the formwork surface 2. The process is repeated, if necessary, with additional formwork elements 1 comprising at least one stripping element 6, so that the formwork space 3 is created, preferably bounded on all sides.

[0127] The next step involves filling the formwork space 3 with the material 19 to be cured, preferably concrete, which then hardens. A formwork removal system according to the invention in this process step is shown in Figures 8 and 10.

[0128] Finally, the drive rod 5 with thread 4 is inserted into the through hole 7 of the stripping element 6 via the opposite surface 14 of the formwork element 1 and by rotating the drive rod 5 when the thread 4 engages with the internal thread 8 of the stripping element 6, a force is generated which detaches the formwork element 1 from the formwork space 3.

[0129] LIST OF REFERENCE SYMBOLS

[0130] 1 formwork element

[0131] 2 formwork area

[0132] 3 Formwork room

[0133] 4 threads

[0134] 5 Drive rod

[0135] 5a End section of the drive rod

[0136] 6 Stripping element

[0137] 7 Through hole internal thread

[0138] Guide section flange-like end section

[0139] Passage opening first section second section opposite surface

[0140] Paragraph a in longitudinal section V-shaped through opening

[0141] securing element

[0142] screw

[0143] Cover or closure element material to be cured

[0144] drilling

[0145] Advance direction a From s chair ich tung

[0146] truncated cone a clear truncated cone b conical surface a first opening b second opening a first end face b second end face

Claims

PATENT CLAIMS 1. Formwork stripping system comprising at least one formwork element (1) with a formwork surface (2) for at least partially delimiting a formwork space (3), a drive rod (5) having a thread (4), at least one formwork element (6) with a through-bore (7) in which an internal thread (8) corresponding to the thread (4) of the drive rod (5) is provided, wherein the formwork element (1) has a through-opening (11) which extends from the formwork surface (2) to a surface (14) opposite thereto and tapers in this direction, wherein the formwork element (6) is arranged in the through-opening (11) and is supported in a form-fitting manner in this in order to prevent the removal of the formwork element (6) via the opposite surface (14).

2. Stripping system according to claim 1, characterized in that the through opening (11) is stepped in longitudinal section.

3. Stripping system according to claim 2, characterized in that the through opening (11) has a first, Formwork surface (2) adjoining section (12) and a second section (13) adjoining the opposite surface (14) and between the first section (12) and second section (13) a step-shaped Paragraph (15) is formed.

4. Stripping system according to claim 3, characterized in that the first and second sections (12, 13) each have a circular cross-section.

5. Stripping system according to claim 3, characterized in that the first section (12) and / or the second section (13) has a polygonal cross-section.

6. Stripping system according to one of claims 3 to 5, characterized in that the stripping element (6) comprises a guide section (9) and a flange-like end section (10), wherein the guide section (9) is arranged at least in sections in the second section (13) of the through opening (11) and the flange-like end section (10) is preferably arranged entirely in the first section (12).

7. Stripping system according to claim 4, characterized in that the guide section (9) and the flange-like end section (10) each have a circular cross-section.

8. Stripping system according to claim 5, characterized in that the flange-like end section (10) has a polygonal cross-section.

9. Stripping system according to claim 1, characterized in that the through opening (11) is V-shaped in longitudinal section at least in sections, preferably entirely.

10. Stripping system according to one of the preceding claims, characterized in that the stripping element (6) is at least partially frustoconical or wedge-shaped.

11. Stripping system according to one of the preceding claims, characterized in that the stripping element (6) is spherical.

12. Stripping system according to one of the preceding claims, characterized in that at least one securing element (16) is provided which fixes the stripping element (6) in its position in the through opening (11) of the formwork element (1) against rotation.

13. Stripping system according to claim 12, characterized in that the at least one securing element (16) is a metal pin or screw (17) by means of which the stripping element (6) is connected to the formwork element (1).

14. Stripping system according to one of the preceding claims, characterized in that a covering or closing element (18) is provided which closes the end of the through-bore (7) closer to the formwork surface (2).

15. Stripping system according to one of the preceding claims, characterized in that several formwork elements (1) are provided, which jointly delimit the formwork space (3) at least partially, preferably completely, wherein each formwork element (1) has at least one through-opening (11) in which a stripping element (6) is arranged.

16. Method for formwork and stripping of a formwork element (1) at least partially delimiting a formwork space (3), comprising the following steps: - arranging a stripping element (6) with a through-hole (7) and an internal thread (8) in a direction away from a formwork surface (2) of the formwork element (I) in the direction of an opposite surface (14) of the formwork element (1) tapering through opening (II) of the formwork element (1) - positioning the formwork element (1) to delimit the formwork space (3) by the formwork surface (2) - filling the formwork space (3) with a material to be hardened (19), preferably concrete, - hardening of the material to be hardened (19), - inserting a drive rod (5) with thread (4) in a driving direction (21) into the through hole (7) of the stripping element (6) over the surface (14) of the formwork element (1) opposite the formwork surface (2) and rotating the drive rod (5) when the thread (4) engages with the internal thread (8) of the stripping element (6), - direct or indirect contact of the hardened material (19) with the end section (5a) of the drive rod (5) , - further turning the drive rod (5) and detaching the formwork element (1) from the formwork space (3) by moving the formwork element (1) against the direction of advance (21) 17. Stripping element (6) with a through-bore (7) including an internal thread, a guide section (9) and a flange-like end section (10), wherein the guide section (9) and the flange-like end section (10) each have a circular or polygonal cross-section, for use in a stripping system according to one of claims 1 to 15.

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