FR3139841A1 - Spacer device for formwork panels and associated methods - Google Patents

Abstract

A spacer device (1) positioned between an introduction form (B1) and a receiving form (B2) each comprising a formwork face (F1, F2), the spacer device (1) comprising a rod (2 ), at least one protective member (3), at least one sealing member (4) mounted on the rod (2) in front of the protective member (3), a compression member (5), integral of the rod (2), configured to compress the sealing member (4) in order to ensure the sealing of the formwork face (F1) of the introduction form (B1) and a stop member (6) configured to abut against the introduction form (B1) so as to calibrate the compression applied to the sealing member (4) by the compression member (5). Abstract Figure: Figure 10

Description

Spacer device for formwork panels and associated methods

The present invention relates to the field of construction formwork, and more particularly formwork panels.

As illustrated in , in order to form a concrete wall, also called "concrete wall", it is known to form a formwork with two formwork panels B10, B20, mounted opposite each other. In known manner, each formwork B10, B20 comprises a formwork face F10, F20 intended to come into contact with the concrete. There is a front formwork panel B10 and a rear formwork panel B20 defined along an axis The X axis spans the from right to left, that is, from front to back. In this document, the terms “front” and “rear” mean a user positioned facing the front formwork B10.

In reference to the , to obtain a concrete wall of the desired thickness, it is necessary to precisely adjust the spacing between the formwork faces F10, F20. For this purpose, it is known to place spacer cones 102 between said formwork faces F10, F20. Each spacer cone 102 has a length corresponding to the thickness of the concrete wall to be made. In other words, it is necessary to have spacer cones 102 of different lengths in order to form walls of different thicknesses.

In a known manner, with reference to the , each formwork face F10, F20 of a formwork panel B10, B20 has a plurality of orifices O10, O20 which pass through it transversely. It is known to guide a spacer rod 101 in each through hole O10, O20, so as to securely connect the formwork panels B10, B20. During a formwork operation, the spacer rod 101 penetrates the through hole O10 of the front form B10, then the spacer cone 102 and the through hole O20 of the rear form B20. In known manner, each spacer rod 101 is tightened at its ends, for example by means of a nut 103, to force the formwork faces F10, F20 against the ends of the spacer cone 102 into which the rod is inserted. spacer 101.

When the concrete in the pasty state is introduced into the formwork, that is to say during the pouring of the concrete, it fills the formwork with the exception of the interior cavities 102c of the spacing cones 102 which are closed by waterproof manner.

After drying and hardening of the concrete, an operator can loosen the spacer rods 101 in order to remove them. A spacer rod 101 can be easily removed since it extends into the interior cavity 102c of a spacer cone 102 and is not in contact with the concrete. The formwork panels B10, B20 are then removed to reveal the wall.

However, the use of spacer cones 102 requires an operator to insert the spacer rod 101 into the front formwork panel B10 then position the spacer cone 102 waiting on the spacer rod 101 between the two formwork panels B10, B20. For safety reasons, it is desirable to avoid an operator being positioned between the two formwork panels B10, B20. In addition, the positioning of the spacing cones 102 disrupts the installation of reinforcement between the formwork panels B10, B20

The invention thus aims to eliminate at least some of these drawbacks by proposing a new type of spacer rod which makes it possible to dispense with the use of spacer cones and which can be used to form walls of thickness different.

PRESENTATION OF THE INVENTION

• Une tige s’étendant longitudinalement selon un axe de tige orienté de l’avant vers l’arrière, la tige comprenant une première extrémité filetée configurée pour être vissée dans la banche de réception et une deuxième extrémité configurée pour être manipulée par un opérateur depuis la banche d’introduction,
• Au moins un organe de protection monté sur la tige et configuré pour s’étendre entre les faces coffrantes,
• Au moins un organe d’étanchéité monté sur la tige en avant de l’organe de protection,
• Un organe de compression, solidaire de la tige et positionné en avant de l’organe d’étanchéité, configuré pour comprimer l’organe d’étanchéité afin d’assurer l’étanchéité de la face coffrante de la banche d’introduction,
• Un organe de butée, solidaire de la tige et positionné en avant de l’organe de compression, configuré pour venir en butée contre la banche d’introduction de manière à calibrer la compression appliquée à l’organe d’étanchéité par l’organe de compression lors du vissage de la tige.

The invention relates to a spacer device configured to be positioned between a front formwork panel, designated introduction formwork, and a rear formwork panel, designated receiving formwork, positioned opposite each other for the formwork of a wall, the introduction form and the receiving form each comprising a formwork face, the spacer device comprising:

• A rod extending longitudinally along a rod axis oriented from front to rear, the rod comprising a first threaded end configured to be screwed into the receiving form and a second end configured to be manipulated by an operator from the introductory panel,
• At least one protective member mounted on the rod and configured to extend between the formwork faces,
• At least one sealing member mounted on the rod in front of the protective member,
• A compression member, secured to the rod and positioned in front of the sealing member, configured to compress the sealing member in order to ensure the sealing of the formwork face of the introduction form,
• A stop member, secured to the rod and positioned in front of the compression member, configured to abut against the introduction form so as to calibrate the compression applied to the sealing member by the sealing member. compression when screwing in the rod.

The spacer device according to the invention makes it possible to directly block the receiving orifice and the insertion orifice into which the rod is inserted. The use of a compressed sealing member ensures optimal sealing. Advantageously, the compression member makes it possible to compress the sealing member optimally to obtain the desired seal. The stop member makes it possible to limit the compression applied to the sealing member. The spacer device can thus be used practically with a motorized tightening tool such as a screwdriver or bolter. Advantageously, the thickness of the wall is not determined between the formwork faces as in the prior art but between the formwork face of the receiving form and a clamping wall of the introduction form, which goes to contrary to current practices.

Thanks to the invention, the spacer device can be installed simply and quickly between the two formwork panels without requiring the prior installation of a spacer cone. It is therefore no longer necessary for an operator to position himself between the formwork panels and maintain the spacing cone, which limits its arduousness. The spacer device can be installed and removed by operator from a forward position. This is very advantageous when the receiving panel is not easily accessible, in particular, suspended from the introduction panel. In addition, the spacer device can be put in place after the reinforcement between the forms.

Preferably, the protective member has a front diameter less than the diameter of the sealing member. Thus, the sealing member makes it possible to fill the mounting clearance between the protective member and the introduction orifice to ensure sealing.

Preferably, the compression member is spaced from the stop member by a longitudinal distance of between 15cm and 25cm, preferably between 18cm and 19cm. This makes it possible to precisely calibrate the compression on the sealing member. Preferably, this longitudinal distance corresponds substantially to the distance between the formwork face of the introduction form and the clamping wall of a spacer block of the introduction form.

Preferably, the protection member is removably mounted on the rod. This makes it possible to select a protective member of length adapted to the thickness of the wall to be formed.

According to one aspect of the invention, the protective member comprises a main body of flared shape. This makes it easier to remove the protective device in a horizontal forward movement.

Preferably, the protection member comprises a blocking element which blocks the forward position of the main body. The protective member is thus mounted on the rod in order to facilitate its handling by an operator, any accidental loss is avoided.

The invention also relates to a set of a front formwork panel, designated introduction formwork, and a rear formwork panel, designated reception formwork, positioned opposite each other for the formwork of a wall, the introduction form and the receiving form each comprising a formwork face, the formwork face of the introduction form comprising at least one introduction orifice, the formwork face of the receiving form comprising at least one aligned reception orifice with the insertion orifice, the assembly comprising a spacer device, as presented previously, mounted in the receiving orifice and the insertion orifice, the protective member extending between the formwork faces .

The spacer device makes it possible to adjust the spacing between the formwork faces while adjusting the thickness of the wall to be formed and while taking up the formwork forces.

Preferably, the introduction orifice has a diameter greater than the diameter of the reception orifice. Thus, the protective member can be inserted from the introduction form while coming into abutment against the formwork face of the receiving form.

Preferably, the insertion form comprising at least one spacer block associated with the insertion orifice, the spacer block comprises a clamping wall configured to cooperate with the stop member of the spacer device . Such a spacer block makes it possible to adjust the compression applied to the sealing member and to adjust the thickness. Advantageously, the thickness of the wall is not determined between the formwork faces as in the prior art but between the formwork face of the receiving form and the clamping wall of the introduction form, which goes to contrary to current practices.

Preferably, the clamping wall is offset from the formwork face of the introduction form by a distance of between 15cm and 25cm.

• Introduire la première extrémité filetée de la tige dans l’orifice d’introduction de la banche d’introduction dans un mouvement d’avant vers l’arrière, de manière à traverser successivement l’orifice d’introduction et l’orifice de réception, l’organe de protection s’étendant entre les faces coffrantes,
• Visser la première extrémité filetée dans la banche de réception de manière à comprimer l’organe d’étanchéité avec l’organe de compression afin d’assurer l’étanchéité de la face coffrante de la banche d’introduction et
• Stopper le vissage lorsque l’organe de butée est en butée contre la banche d’introduction de manière à calibrer la compression appliquée à l’organe d’étanchéité par l’organe de compression.

The invention also relates to a method of mounting a spacer device, as presented previously, between a front formwork panel, designated introduction formwork, and a rear formwork panel, designated receiving formwork, positioned opposite each other. opposite for the formwork of a wall, the introduction form and the receiving form each comprising a formwork face, the formwork face of the introduction form comprising at least one introduction orifice, the formwork face of the receiving panel comprising at least one receiving orifice aligned with the insertion orifice, the method comprising steps consisting of:

• Insert the first threaded end of the rod into the insertion orifice of the insertion form in a movement from front to rear, so as to successively pass through the insertion orifice and the receiving orifice, the protective member extending between the formwork faces,
• Screw the first threaded end into the receiving form so as to compress the sealing member with the compression member in order to ensure the sealing of the formwork face of the introduction form and
• Stop screwing when the stop member abuts against the introduction form so as to calibrate the compression applied to the sealing member by the compression member.

• Dévisser la première extrémité filetée de la tige, depuis la banche d’introduction, de manière à stopper la compression de l’organe d’étanchéité par l’organe de compression,
• Retirer la tige successivement de l’orifice de réception et de l’orifice d’introduction par un mouvement d’arrière vers l’avant depuis la banche d’introduction.

The invention further relates to a method of dismantling a spacer device, as presented previously, between a front formwork panel, designated introduction formwork, and a rear formwork panel, designated receiving formwork, positioned in opposite for the formwork of a wall, the introduction form and the receiving form each comprising a formwork face, the formwork face of the introduction form comprising at least one introduction orifice, the formwork face of the receiving panel comprising at least one receiving orifice aligned with the insertion orifice, the spacer device being in the receiving orifice and the insertion orifice, the protective member extending between the formwork faces, the process comprising steps consisting of:

• Unscrew the first threaded end of the rod, from the introduction form, so as to stop the compression of the sealing member by the compression member,
• Remove the rod successively from the receiving orifice and the insertion orifice by a movement from back to front from the insertion form.

PRESENTATION OF FIGURES

The invention will be better understood on reading the description which follows, given by way of example, and referring to the following figures, given by way of non-limiting examples, in which identical references are given to similar objects .

There is a schematic side representation of a rear formwork panel and a front formwork panel connected by spacer rods according to the prior art.

There is a schematic side-sectional representation of a spacer rod according to the interior art.

There is a schematic side representation of a receiving formwork formwork and an insertion formwork formwork connected by spacer devices according to one embodiment of the invention.

There is a schematic representation of the insert formwork panel from the front.

There is a cross-sectional view of the receiving formwork formwork and the insertion formwork formwork in the absence of a spacer device.

There is a schematic representation of a spacer device according to the invention.

There is another schematic representation of a spacer device according to the invention.

There is an exploded schematic representation of a spacer device according to the invention.

There is a side view of the receiving formwork panel and the insertion formwork panel connected by a spacer device.

There is a cross-sectional view of the receiving formwork panel and the insertion formwork panel connected by a spacer device.

It should be noted that the figures set out the invention in detail to implement the invention, said figures being able of course to be used to better define the invention if necessary.

DETAILED DESCRIPTION OF THE INVENTION

In reference to the , there is shown a front formwork panel, designated introduction form B1, and a rear formwork panel, designated receiving form B2, positioned opposite each other for the formwork of a wall having a predetermined thickness EP.

Each formwork panel B1, B2 comprises a vertical wall P1, P2 comprising a formwork face F1, F2, intended to be arranged internally to the formwork and to be in contact with the cast material, and an exterior face, respectively opposite to the formwork face F1, F2. In this example, each formwork panel B1, B2 is defined in an orthogonal reference frame (X, Y, Z) in which the X axis extends horizontally from back to front, the Y axis extends laterally from the right to left ( ) and the Z axis extends vertically from bottom to top.

In reference to the and to the , the vertical wall P1 of the introduction form B1 comprises in this example four introduction orifices O1 extending perpendicular to the plane (Y, Z) defined by the formwork face F1 to each receive a spacer device 1 according to the 'invention. It goes without saying that the number of introduction orifices O1 could be different. In particular, the introduction form B1 could include only two introduction orifices O1 in the low position. This is for example the case when the formworks B1, B2 are equipped in the upper part with spacer devices.

Analogously, the vertical wall P2 of the receiving form B2 comprises in this example four receiving orifices O2 (not shown) extending perpendicular to the plane (Y, Z) defined by the formwork face F2. It goes without saying that the number of O2 receiving ports could be different. In particular, the reception panel B2 could include only two O2 reception orifices in the low position.

In this example, with reference to the , the O2 reception orifices have a standard diameter to allow the passage of a rod. For this purpose, each O2 reception port is tapped. Preferably, each O2 reception orifice has a diameter D2 of between 24mm and 35mm.

In this example, each O1 introduction orifice has a diameter D1 which is greater than the diameter of an O2 reception orifice. Preferably, each introduction orifice O1 has a diameter D1 of between 40mm and 70mm.

As illustrated in Figures 4 and 5, the vertical wall P1 of the introduction form B1 comprises a spacer block 10 mounted opposite each introduction orifice O1. In reference to the , the spacer block 10 comprises a clamping wall 11 which extends parallel to the formwork face F1 and offset relative to the latter by a spacing distance E11 which is predetermined. Preferably, the spacing distance E11 is between 150mm and 250mm. In an original manner, the clamping wall 11 is used as a reference surface to adjust the thickness of the wall to be formed.

The clamping wall 11 comprises a through opening O12 which is aligned along a longitudinal axis XE with the introduction orifice O1 associated with the spacer block 10. In this example, the through opening O12 has a diameter D12 which is greater to the diameter D1 of the introduction orifice O1. Preferably, the through opening O12 has a diameter D12 of between 50mm and 100mm.

Preferably, the vertical wall P2 of the receiving panel B2 comprises a receiving block 20 mounted opposite each receiving orifice O2. In reference to the , the receiving block 20 comprises a receiving member 21, in particular, a threaded receiving nut to cooperate with a threaded end of a spacer rod. The receiving member 21 is aligned with an O2 receiving orifice.

When connecting the formwork panels B1, B2 opposite each other, the introduction orifices O1 and reception orifices O2 are aligned along the longitudinal axis XE as illustrated in .

A spacer device 1 according to one embodiment of the invention will now be presented with reference to Figures 6 to 8.

The spacer device 1 comprises a rod 2 extending longitudinally along a rod axis T oriented from front to rear. The rod 2 comprises a first threaded end 2A (rear end) configured to be screwed into the reception form B2 and a second end 2B (front end) configured to be manipulated by an operator from the introduction form B1. Preferably, the rod 2 is made of metal to take up the concreting forces. Preferably, the rod 2 has a length of between 500mm and 1000mm and a diameter of between 15mm and 32mm. In this example, only end 2A is threaded but it goes without saying that the thread could extend to other portions of rod 2.

The spacer device 1 further comprises at least one protective member 3 mounted on the rod 2 and configured to extend between the interior formwork faces F1, F2 of the formworks B1, B2. In this example, the protective member 3 has a conical shape flared from the rear to the front so as to facilitate the removal of the spacer device 1 by translation towards the front along the rod axis T like this will be presented later. The protective member 3 can be made of plastic.

In reference to the , the protective member 3 has a length L3 which corresponds substantially to the desired spacing between the formwork panels B1, B2, that is to say, the thickness EP of the wall to be formed. The protective member 3 is removably mounted on the rod 2 so as to be able to adapt the thickness of the wall to be formed using a protective member 3 having a suitable length L3. In practice, a front part of the protective member 3 extends in front of the formwork face F1, by a distance of around 6mm.

In this example, the protective member 3 is made in two parts and comprises a main body 30, here flared, and a blocking element 31 which blocks the position of the main body 30 towards the rear. The blocking element 31 is in the form of a threaded nut to retain the main body 30 when the rod 2 is removed. It goes without saying that the protective member 3 could be made in one piece or more of two rooms.

In reference to the , the protective member 3 has a rear diameter D31 (at its rear end) which is greater than the diameter D2 of the receiving opening O2 in order to abut against the formwork face F2 during assembly ( ). The protective member 3 has a front diameter D32 (at its front end) which is less than the diameter D1 of the introduction orifice O1 in order to be able to pass through the introduction form B1 and position itself between the two forms B1, B2 ( ).

According to one aspect of the invention, the protective member 3 is deformable radially relative to the rod axis T. Also, it can have, at rest, a front diameter D32 which is greater than the diameter D1 of the orifice of introduction O1 and, in the constrained state, a front diameter D32 which is less than the diameter D1 of the introduction orifice O1. Preferably, the protective member 3 is deformed radially when it is introduced into the introduction form B1.

The spacer device 1 further comprises at least one sealing member 4 mounted on the rod 2 in front of the protective member 3 in order to ensure the sealing of the formwork face F1 of the introduction form B1 . In this example, with reference to Figures 6 to 8, two sealing members 4 are presented but it goes without saying that their number could be different. Each sealing member 4 is in the form of a washer, in particular made of elastomer, which can be compressed against the protective member 3 and against the opposite face F1' to the formwork face F1 of the vertical wall P1 of so as to close the introduction orifice O1. A sealing member 4 makes it possible in particular to close the annular mounting space resulting from the difference in diameters between the front diameter D32 of the protective member 3 and the diameter D1 of the introduction orifice O1. Preferably, the vertical wall P1 may comprise one or more intermediate pieces to allow optimal cooperation between a sealing member 4 and the opposite face F1' to the formwork face F1 of the vertical wall P1.

Preferably, with reference to the , the sealing member 4 has a diameter D4 which is greater than the diameter D1 of the introduction orifice O1 in order to abut against the opposite face F1' to the formwork face F1. The diameter D4 of the sealing member 4 is less than the diameter D12 of the through opening O12 of the clamping wall 11 of the spacer block 10 in order to be able to be inserted into the spacer block 10. Preferably , the sealing member 4 has a diameter D4 of between 50mm and 90mm. The sealing members 4 are preferably mounted in a removable manner so that they can be replaced in the event of wear.

In this example, an interface element 8 is mounted between the protection member 3 and the sealing members 4. The interface element 8 is configured to extend into the O2 introduction orifice and has a thickness substantially equal to that of the wall in which the O2 introduction orifice is formed. The interface element 8 has in this example a diameter equal to the front diameter D32 of the sealing member 3. According to one aspect, the interface element 8 is integral with the protection member 3 or with a sealing member 4. It makes it possible to separate the protective member 3, whose length L3 is predetermined, from the sealing member 4 while taking into account the thickness of the wall P1, which allows to respect the coastlines.

Still with reference to Figures 6 to 8, the spacer device 1 further comprises at least one compression member 5, integral with the rod 2, configured to compress the sealing member 4 against the opposite face F1' of the formwork face F1 in order to ensure the sealing of the formwork face F1 of the introduction form B1. Preferably, the compression member 5 is welded to the rod 2 or made from material thereof.

Preferably, with reference to the , the compression member 5 has a diameter D5 which is less than the diameter D12 of the through opening O12 of the clamping wall 11 of the spacer block 10 in order to be able to be introduced into the spacer block 10. preferably, with reference to the , the compression member 5 has a diameter D5 of between 50mm and 90mm.

With reference to Figures 6 to 8, the spacer device 1 further comprises at least one stop member 6, secured to the rod 2 and positioned in front of the compression member 5, configured to abut against the form introduction B1 so as to limit the screwing of the first end 2A. In particular, the stop member 6 is configured to abut against the clamping wall 11 of the spacer block 10 of the introduction form B1. This advantageously makes it possible to limit the compression of the sealing members 4 by the compression member 5 and to adjust the thickness EP of the wall. Preferably, the stop member 6 is welded to the rod 2 or made from material thereof.

Preferably, with reference to the , the stop member 6 is spaced from the compression member 5 by a spacing distance L56 which is substantially equal to the spacing distance E11 defined between the clamping wall 11 and the formwork face F1.

With reference to Figures 6 to 8, the spacer device 1 further comprises a clamping member 7, secured to the rod 2 and positioned in front of the stop member 6 so as to rotate the rod 2 around its rod axis T to allow screwing/unscrewing of the first end 2A. The clamping member 7 is preferably formed at the second end 2B.

In this example, the tightening member 7 is configured to cooperate with a tightening tool, for example, a tightening wrench or a screwdriver/bolter. Preferably, the clamping member 7 has a polygonal shape, in particular, hexagonal.

Preferably, the clamping member 7 is welded to the rod 2 or made from material thereof. According to a preferred aspect, the clamping member 7 is integral in translation with the stop member 6 but is not integral in rotation. In other words, the clamping member 7 is mounted “idle” in relation to the stop member 6. This makes it possible to limit the tightening forces.

An example of implementation of a method of mounting a spacer device 1 will be presented with reference to Figures 9 and 10. In this example, the formworks B1, B2 are positioned opposite each other and the The O2 reception port is aligned with the O1 introduction port along an axis XE.

In this example, the operator is located at the front of the introduction panel B1 and no operator is positioned between the panels B1, B2. The protective member 3 has a length L3 corresponding substantially to the thickness EP of the wall to be formed. The blocking element 31 makes it possible to block the main body 30, which facilitates the handling of the spacer device 1.

The method comprises a step consisting of introducing the first threaded end 2A of the rod 2 into the introduction orifice O1 of the introduction form B1 in a movement from front to rear, so as to successively cross the introduction orifice O1 and the reception orifice O2 the protective member 3 extending between the formwork faces F1, F2. During insertion, the rod axis T of the spacer device 1 is aligned with the axis XE in the spacer block 10 and inserted into the through opening O12. The rear end 3A of the protective member 3 abuts against the formwork face F2 of the receiving form B2. The protection member 3 has a front diameter D32 less than the diameter D1 of the introduction orifice O1 and there is mounting clearance.

The method comprises a step consisting of screwing the first threaded end 2A into the receiving form B2 so as to compress the sealing member 4 with the compression member 5 in order to ensure the sealing of the formwork face F1 of the introductory panel B1. The compression member 5 moves backwards during screwing and progressively compresses the sealing member 4 at the periphery of the insertion orifice O1, which ensures sealing by filling the gap disassembly. During this step, the operator preferably uses an electric screwdriver or bolter on the clamping member 7, which reduces its arduousness.

The method comprises a step consisting of stopping the screwing when the stop member 6 abuts against the introduction form B1, in particular against the clamping wall 11 of the spacer block 10, so as to calibrate the compression applied to the sealing member 4 by the compression member 5. Advantageously, the stop member 6 makes it possible to stop the compression and ensures that the wall to be formed has the correct thickness EP. In the stop position, it is no longer possible to tighten, which is practical for the operator.

Several spacer devices 1 are preferably positioned between the formworks B1, B2 so that the wall to be formed has the correct thickness EP.

A hardening material such as concrete can then be injected into the formwork delimited by the formwork panels B1, B2. The rod 2 advantageously makes it possible to take up the concreting efforts. Once the concrete has set, the spacer devices 1 can be removed by an operator located at the front of the introduction form B1.

An example of implementation of a method of dismantling a spacer device 1 will be presented with reference to Figures 9 and 10. The method comprises a step consisting of unscrewing the first threaded end 2A of the rod 2, from the introduction form B1, so as to stop the compression of the sealing member 4 by the compression member 5. This step is preferably carried out by rotation of the front end 2B (tightening member 7) at the using a screwdriver. Due to its flared shape, the main body 30 of the protection member 3 can be removed in a practical manner by horizontal translation along the axis XE.

The method comprises a step consisting of withdrawing the rod 2 successively from the reception orifice O2 and from the introduction orifice O1 by a movement from back to front from the introduction form B1. Thus, an operator can carry out all the manipulations from the B1 introduction bench. This is more practical and increases security. An operator is no longer forced to place himself between two forms or on the side of a form located close to the void.

Claims (13)

Spacer device (1) configured to be positioned between a front formwork panel, designated introduction form (B1), and a rear formwork panel, designated receiving form (B2), positioned opposite each other for the formwork of a wall, the introduction form (B1) and the receiving form (B2) each comprising a formwork face (F1, F2), the spacer device (1) comprising:

• A rod (2) extending longitudinally along a rod axis (T) oriented from front to rear, the rod (2) comprising a first threaded end (2A) configured to be screwed into the receiving form ( B2) and a second end (2B) configured to be manipulated by an operator from the introduction form (B1),
• At least one protective member (3) mounted on the rod (2) and configured to extend between the formwork faces (F1, F2),
• At least one sealing member (4) mounted on the rod (2) in front of the protective member (3),
• A compression member (5), integral with the rod (2) and positioned in front of the sealing member (4), configured to compress the sealing member (4) in order to ensure the sealing of the formwork face (F1) of the introduction form (B1),
• A stop member (6), integral with the rod (2) and positioned in front of the compression member (5), configured to abut against the introduction form (B1) so as to calibrate the compression applied to the sealing member (4) by the compression member (5) when screwing the rod (2).

Spacer device (1) according to claim 1, in which the protection member (3) has a front diameter (D32) less than the diameter (D4) of the sealing member (4). Spacer device (1) according to one of claims 1 to 2, in which the compression member (5) has a diameter (D5) less than the diameter (D6) of the stop member (6). Spacer device (1) according to one of claims 1 to 3, in which the compression member (5) is spaced from the stop member (6) by a longitudinal distance (L56) of between 15cm and 25cm. Spacer device (1) according to one of claims 1 to 4, in which the protection member (3) is removably mounted on the rod (2). Spacer device (1) according to one of claims 1 to 5, in which the protective member (3) comprises a main body (30) of flared shape. Spacer device (1) according to claim 6, in which the protective member (3) comprises a blocking element (31) which blocks the position of the main body (30) towards the front. Set of a front formwork panel, designated introduction formwork (B1), and a rear formwork panel, designated reception formwork panel (B2), positioned opposite each other for the formwork of a wall, the introduction form (B1) and the receiving form (B2) each comprising a formwork face (F1, F2), the formwork face (F1) of the introduction form (B1) comprising at least one insertion orifice (O1), the formwork face (F2) of the receiving form (B2) comprising at least one receiving orifice (O2) aligned with the insertion orifice (O1), the assembly comprising a spacer device ( 1) according to one of claims 1 to 7 mounted in the receiving orifice (O2) and the insertion orifice (O1), the protective member (3) extending between the formwork faces (F1, F2). Assembly according to claim 8, in which the introduction orifice (O1) has a diameter (D1) greater than the diameter (D2) of the reception orifice (O2). Assembly according to one of claims 8 to 9, in which, the introduction form (B1) comprising at least one spacer block (10) associated with the introduction orifice (O1), the spacer block (10) comprises a clamping wall (11) configured to cooperate with the stop member (6) of the spacer device (1). Assembly according to claim 10, in which the clamping wall (11) is offset relative to the formwork face (F1) of the introduction form (B1) by a distance (E11) of between 15cm and 25cm. Method of mounting a spacer device (1) according to one of claims 1 to 7 between a front formwork panel, designated introduction form (B1), and a rear formwork panel, designated receiving form ( B2), positioned opposite each other for the formwork of a wall, the introduction form (B1) and the receiving form (B2) each comprising a formwork face (F1, F2), the formwork face (F1 ) of the introduction form (B1) comprising at least one introduction orifice (O1), the formwork face (F2) of the receiving form (B2) comprising at least one receiving orifice (O2) aligned with the introduction orifice (O1), the method comprising steps consisting of:

• Insert the first threaded end (2A) of the rod (2) into the insertion orifice (O1) of the insertion form (B1) in a movement from front to rear, so as to successively cross the the introduction orifice (O1) and the reception orifice (O2), the protective member (3) extending between the formwork faces (F1, F2),
• Screw the first threaded end (2A) into the receiving form (B2) so as to compress the sealing member (4) with the compression member (5) in order to ensure the sealing of the formwork face ( F1) of the introduction panel (B1) and
• Stop screwing when the stop member (6) abuts against the introduction form (B1) so as to calibrate the compression applied to the sealing member (4) by the compression member (5) .

Method for dismantling a spacer device (1) according to one of claims 1 to 7 between a front formwork formwork, designated introduction formwork (B1), and a rear formwork formwork, designated receiving formwork (B1). B2), positioned opposite each other for the formwork of a wall, the introduction form (B1) and the receiving form (B2) each comprising a formwork face (F1, F2), the formwork face (F1 ) of the introduction form (B1) comprising at least one introduction orifice (O1), the formwork face (F2) of the receiving form (B2) comprising at least one receiving orifice (O2) aligned with the insertion orifice (O1), the spacer device (1) being in the receiving orifice (O2) and the insertion orifice (O1), the protective member (3) extending between the formwork faces (F1, F2), the method comprising steps consisting of:

• Unscrew the first threaded end (2A) of the rod (2), from the introduction form (B1), so as to stop the compression of the sealing member (4) by the compression member (5) ,
• Remove the rod (2) successively from the receiving orifice (O2) and the insertion orifice (O1) by a movement from back to front from the insertion form (B1).