KR101769393B1 - Easy Removable Of Paper Sleeve of Length Adjustable Type - Google Patents

Abstract

Disclosed is an easily removable-paper pipe sleeve with an adjustable length. According to the present invention, the easily removable-paper pipe sleeve with an adjustable length, which is installed on a form to install a pipe on a wall or a slab before pouring concrete, comprises an extensible paper pipe, a paper pipe coating part and a peeling member. The extensible paper pipe comprises an upper paper pipe, a center paper pipe and a lower paper pipe, which are formed by paper, allow their lengths to be adjusted in such a manner that the upper paper pipe and the lower paper pipe are spaced apart, and maintain the extended length by mutual frictional force. The paper coating part is positioned on the outer circumferential surface of the extensible paper pipe to obtain fire resistance, water resistance and corrosion resistance. The peeling member is positioned on the outer circumferential surface of the extensible paper pipe to cover the coating part and allows the extensible paper pipe to be peeled off after the concrete is cured. Accordingly, the sleeve is installed on a wall or a slab to form a pipe before pouring the concrete. The sleeve is eco-friendly since the sleeve is made of paper and allows its length to be variously adjusted in accordance with the depth of poured concrete. The sleeve has the peeling member positioned on the outer circumferential surface thereof such that the sleeve can be easily removed from completely cured concrete and can be repeatedly reused by preventing damage caused in a removal process, thereby obtaining an eco-friendly and economical effect.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a paper sleeve,

The present invention relates to a length-adjustable paper tube sleeve which can be easily removed, and more particularly, to a sleeve which is installed before a concrete is inserted to form a pipe on a wall or a slab, and is made of paper and is environmentally friendly. And a separating member provided on the outer circumferential surface to easily remove the cured resin from the concrete after the curing is completed.

Generally, the sleeve forms a circular passage that can be extended to the wall or slab by mutual connection of the pipes. The concrete is installed in the formwork before the concrete is cast, and after the curing of the concrete is completed, So that it can be installed in the piping.

In addition, in order to smoothly install piping extending vertically or horizontally to the building, the sleeve installed in the formwork must be fixed at the correct position without deviating from the installation position during the casting and curing of the concrete. It is hard to remove it because it hardens together with concrete, and the sleeve formed of PVC or aluminum pipe is damaged or deformed during the removal process of the sleeve, and waste resources are wasted because it is not reused.

In this case, it is possible to easily adjust the length of the sleeve according to the depth of the concrete at the present, and it is possible to easily remove the concrete from the concrete, which is formed from a paper material and is environmentally friendly and cured, And researches have been actively carried out.

The existing sleeve is made of PVC or steel material and is fixed to the formwork and the mold is fixed to the mold by releasable member attached to the outer surface of the sleeve. The sleeve made of PVC or steel can be installed firmly on the mold but it is environmentally friendly In order to apply the sleeve according to the depth change of concrete, it is necessary to manufacture each sleeve in the field, so that the efficiency of construction is lowered. During the curing process of the concrete, the outside of the sleeve hardens together with the concrete, There is a problem that resources can not be reused and resources are wasted.

As a conventional technique of the sleeve, a sleeve is proposed in which a mold is inserted into an outer circumferential surface of a sleeve through a sleeve, and a sleeve is inserted to separate the sleeve from the sleeve body through the sleeve of the sleeve, by way of Korean Utility Model Publication No. 20-2010-0009320 have.

However, since such a sleeve is only provided with a release member on the outer circumferential surface, the releasing member to be coupled to the outside is not clear, so that the releasability of the sleeve coupled to the concrete can not be accurately determined and the releasing member is simply inserted into the sleeve It is difficult to remove the concrete when the concrete is hardened together with the mold release member, or there is a fear of breakage in the process of removing the sleeve.

In addition, in order to apply the sleeve according to the depth of the concrete to be poured, it is necessary to increase the manufacturing cost of each sleeve It is inefficient because there is a problem that the efficiency of construction is lowered.

The present invention has been conceived to overcome the problems of the prior art described above, and it is an object of the present invention to provide an eco-friendly and environmentally friendly plywood which can be applied by adjusting the length of the sleeve according to the depth of the concrete, The present invention has been made in view of the above problems, and it is an object of the present invention to provide a length-adjustable paper-and-tube sleeve which can be repeatedly reused by being removed while preventing damage from the completed concrete.

The object of the present invention is to provide a length-adjustable paper tube sleeve which is installed on a formwork before a concrete is poured to form a pipe on a wall or a slab and is easy to remove. The paper tube sleeve comprises an upper paper tube, a central paper tube, A pair of upper and lower branch pipes slidably coupled to both sides of the central branch pipe so that the upper branch pipe and the lower branch pipe are spaced apart from each other and the length thereof is adjusted to maintain a length expanded and contracted by mutual frictional force, And a peeling member provided on an outer circumferential surface of the expansion pipe for covering the pipe coating portion and for peeling off the expansion pipe after the concrete is cured, wherein the peeling member is provided on the outer circumferential surface of the branch pipe for fire resistance, water resistance and corrosion resistance, The length of the sleeve being less than the diameter of the sleeve.

According to a preferred aspect of the present invention, the peeling member includes: an elastic mesh net covering an outer circumferential surface of the elastic pipe; an elastic mesh net coated or coated on an outer circumferential surface of the elastic mesh net to sandwich the elastic net between the concrete and the elastic mesh net; And a metal thin film coating unit.

According to a preferred aspect of the present invention, the elastic mesh net is formed at one end of the elastic mesh net and is provided at a plurality of openings. The elastic mesh net is fixed to an open side of the elastic pipe, Preventing member.

According to a preferred aspect of the present invention, the core coating portion is provided on the outer circumferential surface of the expansion tube in the form of a polymer film in a thickness of 10 to 50 탆.

According to a preferred aspect of the present invention, the telescopic branch pipe further includes a cap member coupled to both side openings and preventing external foreign matter or the concrete from being introduced.

According to a preferred aspect of the present invention, the extension pipe further includes a scale part provided on the outer circumferential surface of the upper branch pipe, the center branch pipe and the lower branch pipe so as to confirm the length of the upper and lower branch pipes and the depth of the concrete do.

According to a preferred aspect of the present invention, the stretch branch tube is formed by bending each of the upper branch tube and the lower branch tube toward the central branch tube, and a pair of bent portions formed at both ends of the central branch tube, And a stopping jaw for preventing the lower branch pipe from being separated from the central branch pipe.

According to a preferred aspect of the present invention, the above-described stretch branch pipe is provided with a gap adjusting member fastened to the outer circumferential surface of the central branch pipe so that both end portions thereof are caught by the upper branch pipe and the lower branch pipe, respectively, .

According to a preferred aspect of the present invention, the gap adjusting member is formed into a divided tube shape, one end of the gap adjusting member is engaged by a hinge member, and the other end of the gap adjusting member is widened or contracted while rotating around the hinge member, And a fixing groove formed at the other end of the fixing pipe and fixing the fixing pipe to each other by insertion of the fixing protrusion.

According to a preferred aspect of the present invention, the telescopic tube further includes a fixing part installed in the mold to fix the telescopic tube in a fixed position.

According to the present invention, a sleeve, which is installed before a concrete is poured to form a pipe on a wall or a slab, is made of paper and is eco-friendly. The length of the sleeve can be variously adjusted according to the depth of the concrete, It is easy to remove the sleeve from the cured concrete, and it is possible to use the repetitive agent by preventing breakage in the removal process, thus being eco-friendly and economical.

FIG. 1 is a perspective view of a length-adjustable paper sleeve according to an embodiment of the present invention,
FIG. 2 is a perspective view illustrating that a length-adjustable paper sleeve according to an embodiment of the present invention is easily removed; FIG.
FIG. 3 is a cross-sectional view illustrating that a length-adjustable branch sleeve easy to be removed according to an embodiment of the present invention is coupled to a mold,
FIG. 4 is a perspective view illustrating that a gap adjusting member is coupled to a length-adjustable paper tube sleeve which is easy to remove according to an embodiment of the present invention;
FIG. 5 is a perspective view showing that another embodiment of the upper cap and the gap adjusting member are combined in the length-adjustable paper sleeve according to the embodiment of the present invention,
FIG. 6 is a perspective view showing that a lengthwise regulating type branch sleeve according to an embodiment of the present invention is installed in a Euroform formwork,
FIG. 7 is a cross-sectional view of a Euroform formwork in a length-adjustable paper tube sleeve according to an embodiment of the present invention. FIG.
FIG. 8 is a perspective view illustrating that an aluminum foam formwork is installed in a length-adjustable paper tube sleeve that can be easily removed according to an embodiment of the present invention;
FIG. 9 is a cross-sectional view illustrating the installation in an aluminum foam formwork in a lengthy adjustable branching sleeve according to an embodiment of the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, a preferred embodiment of a length-adjustable paper sleeve according to the present invention will be described in detail with reference to the accompanying drawings.

The thickness of the lines and the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation, and those skilled in the art will easily implement the invention. But does not mean that the technical idea and scope of the present invention are limited.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

The following terms are defined in consideration of the functions of the present invention, and this may vary depending on the intention or custom of the user, the operator, and the definition of these terms should be based on the contents throughout this specification.

The length-adjustable paper tube sleeve 1 according to the present invention, which is easy to remove, is installed in a mold (not shown) before the concrete 3 is inserted to form a pipe on a wall or a slab. The upper and lower branch pipes 110 and 130 are formed on both sides of the central branch pipe 120. The upper and lower branch pipes 110 and 120 are formed of paper, A stretch branch pipe 100 coupled to the upper and lower branch pipes 110 and 130 so as to be spaced apart from each other and to be length-regulated and to maintain a stretched length by mutual frictional force, (Not shown) provided on the outer circumferential surface for fire resistance, water resistance, and corrosion resistance, and a cover member (not shown) provided on the outer circumferential surface of the expansion and contraction branch tube 100 to cover the core tube coating portion (not shown), and after the concrete 3 is cured A peeling member (not shown) for peeling off the elastic member 100, (200).

The expansion tube 100 is formed of a paper material so that one side of the upper branch tube 110 and the lower branch tube 130 are respectively inserted into the central branch pipe 120 and the upper branch pipe 110 and the lower branch pipe 130 Is slid along the outer circumferential surface of the central tube 120 to adjust the length of the extension tube 100 so that the upper and lower branch tubes 110 and 130 are closely contacted to the outer circumferential surface of the center tube 120 And the distance between the upper and lower branch pipes 110 and 130 is maintained by the mutual frictional force, so that the length of the expansion and contraction branch pipe 100 is adjusted.

The cap member 170 is coupled to one side or both side openings of the expansion and contraction branch pipe 100. The cap member 170 is connected to the outside of the expansion tube 100 to prevent foreign substances or the concrete 3 from being drawn in. And is coupled to the opening.

The cap member 170 includes a cap body 171 which is inserted into and coupled to the inside of the expansion and contraction branch pipe 100 and a cap body 171 protruding from one side of the top face of the cap body 171, And a fixing protruding member 172 for fixing the protruding protruding member.

The fixing projecting member 172 of the cap member 170 is formed at the inner center so as to be fixedly positioned in the mold (not shown) and protruded outwardly, and the outer circumferential surface is formed in a nut shape And a cap member fixing bar (not shown) coupled to the mold by rotation.

Meanwhile, the cap member 170 can be applied to various embodiments according to the type of the mold to which the elastic member 100 is applied.

The scale part 150 is provided on the outer circumferential surface of the above-described stretch branch pipe 100. The scale part 150 is formed at a position where the depth of the extension pipe 100 is poured into the concrete 3, The length of the lower branch pipe 130 can be confirmed by the outer circumferential surface of the central branch pipe 120. The length of the extension pipe 100 and the depth of the concrete pipe 3 can be visually confirmed A central tube 120 and a lower tube 130. The upper and lower branch tubes 110,

Although the construction of the expansion and contraction branch tube 100 is preferably as described above, according to the embodiment, the expansion and contraction branch pipe 100 is formed with the step 140 at one end of the upper branch pipe 110 and the lower branch pipe 130, The step 140 is bent toward the central branch 120 to provide a catch.

At both ends of the central branch pipe 120, a latching protrusion 121 is formed. The latching protrusion 121 is bent at both ends of the central branch pipe 120. The upper branch pipe 110 and the lower branch pipe The upper and lower branch pipes 110 and 130 are prevented from being separated from the central branch pipe 120 while being caught by the step 140 of the main branch pipe 130. [

A gap adjusting member 180 is fastened to the outer circumferential surface of the center tube 120 provided in the aforementioned elastic tube 100. The gap adjusting member 180 is fastened to the outer circumferential surface of the center tube 120, The upper and lower branch pipes 110 and 130 are respectively engaged with the upper and lower branch pipes 110 and 130 so as not to narrow the distance between the upper and lower branch pipes 110 and 130, Is formed to be larger than the diameter of the center tube 120 and slides along the outer circumference of the center tube 120. The gap adjusting member 180 is coupled to the outer circumference of the center tube 120, The distance between the upper and lower branch pipes 110 and 130 is not narrowed while being hung on the upper and lower branch pipes 110 and 130, respectively.

One end of the gap adjusting member 180 is formed in a divided tube shape and is coupled by a hinge member 184 so that the other end of the gap adjusting member 180 is rotated or widened while rotating around the hinge member 184, A coupling protrusion 182 formed at one side of the other end of the coupling pipe 181 and a coupling protrusion 182 formed at the other end of the coupling pipe 181, And a fixing groove 183 in which the fastening pipe 181 is mutually fixed by the insertion of the fastening pipe 182.

The connecting pipe 181 is formed in a plurality of pipes and is formed in a tubular shape and is rotatably coupled by the hinge member 184. Both sides of the connecting pipe 181 are rotated about the center of the hinge member 184, The coupling pipe 181 is fastened to the outer peripheral surface of the center tube 120 so as to correspond to the distanced distance between the upper and the branch pipes 110 and 120, The distance between the branch tube 110 and the center branch pipe 120 is not narrowed.

The coupling protrusion 182 protrudes from one side of the other end of the coupling pipe 181 and is inserted into the fixing groove 183 to fix the coupling pipe 181.

The fixing groove 183 is formed at the other end of the coupling pipe 181 and is formed with a groove into which the coupling protrusion 182 is inserted to prevent the detachment of the coupling protrusion 182, (182) to fix the fastening pipe (181).

The fixing tube 160 is fixed to the mold so as to be fixed to the mold 100. The fixing unit 160 is divided into a method of fixing the extension tube 100 to the mold depending on the type of the mold, When the extension tube 100 is installed in the aluminum foam form 5, the fixing part 160 is provided in the formwork and the fixing pin 162 to be described later is provided in the form, 100, the fixing part 160 is fixed to the mold 100 by fixing the fixing clip 161 to be described later.

The fixing part 160 is installed in the Euroform formwork 4 in order to fix the expansion tube 100 to the Euroform formwork 4. The fixing clip 161 is fixed to the Euroform formwork 4 ) To fix one side of the elastic member 100 and a cap member 170 'of another embodiment to the other side.

Here, the cap member 170 'of another embodiment is provided in a shape in which one side of the cap member 170' is inserted into the inside of the expansion and contraction tube 100, and the fixing projection 172 is not included.

A bottom plate 161-1 including a fixing hole 161-2 through which a bolt (not shown) is passed is formed on one side of the fixing clip 161, The bottom plate 161-1 is brought into contact with one surface of the Euroform form 4 so that a bolt passing through the fixing hole 161-2 is engaged with the Euroform formwork 4, Thereby fixing the fixing clip 161.

A first vertical plate 161-3 is formed on one side of the bottom plate 161-1 so as to be perpendicular to the flow forming die 4, 100 and is bent upwards from the bottom plate 161-1 to be perpendicular to the Euroform form 4.

A second vertical plate 161-4 is formed in parallel to the first vertical plate 161-3 so that the second vertical plate 161-4 is spaced apart from the first vertical plate 161-3 The extension pipe (100) is inserted into a space between parallel distances to fix the extension pipe (100) together with the first vertical pipe (161-3) And one bent upward is formed to be bent toward the first vertical plate 161-3.

The fixing part 160 is provided in the aluminum foam formwork 5 to fix the extension tube 100 to the aluminum foam formwork 5. The fixing pin 162 is fixed to the aluminum foam formwork 5, The other end of the cap member 170 'is connected to the aluminum foam mold 5 through the upper surface of the cap member 170' of another embodiment and the other side thereof presses the upper surface of the cap member 170 ' Thereby fixing the expansion tube 100.

The fixing pin 162 is formed with a vertical bar 162-1 coupled to the aluminum foam form 5. The vertical bar 162-1 is formed by a screw 162-2 formed on the outer circumferential surface, And one side of the vertical bar 162-1 is coupled to the aluminum foaming form 5 so that one side of the vertical bar 162-1 is connected to the opening of the expansion pipe 100, Is passed through the upper surface of the exemplary cap member 170 'and is rotated and coupled to the aluminum foam die 5.

However, according to the embodiment, the vertical bar 162-1 has a fixing nut 162-5 coupled to one side of the vertical bar 162-1 that is coupled with the aluminum foam form 5, The fixing nut 162-5 prevents the vertical bar 162-1 from being detached from the aluminum foam form 5. The fixing nut 162-5 is provided on the upper surface of the aluminum foam form 5, And the vertical bar 162-1 is engaged with the fixing nut 162-5 by the screw 162-2 formed in the vertical bar 162-1 and the fixing nut 162-5 And one side of the vertical bar 162-1 protruding from the vertical bar 162-1 is coupled to the aluminum foam die 5.

A pressing member 162-3 is coupled to the other side of the vertical bar 162-1 and the pressing member 162-3 is coupled to the cap member 170 of the other embodiment 'To prevent gaps between the extensible tube 100 and the aluminum foam form 5 from occurring and to prevent the concrete 3 and foreign substances from being drawn into the interior A through hole (not shown) through which the vertical bar 162-1 passes is formed on one side of the pressing member 162-3 and is coupled to the other side of the vertical bar 162-1, Is located on the upper surface of the member 170 'and presses the upper surface of the cap member 170' of the other embodiment by the rotation of the tightening member 162-4, which will be described below.

A tightening member 162-4 is coupled to the other side of the vertical bar 162-1 and the tightening member 162-4 urges the pressing member 162-3 so that the vertical bar 162- The tightening member 162-4 is coupled to the other side of the vertical bar 162-1 and is lowered and raised along the thread 162-2 of the vertical bar 162-1, The pressing member 162-3 located on the top surface of the cap member 170 'of the other embodiment is pressed by the screw 162-2 of the vertical bar 162-1, Is tightly fixed to the aluminum foam form (5).

The branch pipe coating unit includes a polymer film that improves the fire resistance, water resistance, and corrosion resistance of the expansion pipe 100. The branch pipe coating unit includes a branch pipe coating (not shown) It is preferable that a polymer film composed of polypropylene, polyethylene, polyethylene terephthalate or the like is applied. However, this is for the purpose of illustrating only one embodiment, and it is possible to improve the fire resistance, water resistance and corrosion resistance of the above- Various materials can be applied.

The paper tube coating part (not shown) is provided on the outer circumferential surface of the stretch paper tube 100 in the form of a polymer film in a thickness of 10 to 50 μm, and the polymer film of the paper tube coating part is formed to have a thickness of 10 to 50 μm If the thickness of the paper tube coating portion is less than 10 mu m, there is a risk of damage to the use of the stretch paper tube 100 during transportation. If the thickness is more than 50 mu m, economical efficiency may be deteriorated due to an expensive polymer film.

The peeling member 200 is provided on the outer circumferential surface of the above-described stretch branch tube 100. The peeling member 200 is provided on the outer circumferential surface of the stretch branch tube 100 to cover the core tube coating portion, and the concrete 3 is cured The separating member 200 minimizes the breakage of the expansion pipe 100 when the expansion pipe 100 is removed from the concrete 3 after curing, And is easily removed.

The peeling member 200 includes an elastic mesh net 210 that covers the outer circumferential surface of the elastic member 100 and has elasticity and an elastic mesh net 210 that is coated or coated on the outer circumferential surface of the elastic mesh net 210, And a metal thin film coating unit 220 provided between the elastic mesh net 210.

The elastic mesh net 210 covers a total area of the outer peripheral surface of the elastic tube 100 in a thickness of 1 to 3 mm with elasticity and elasticity to minimize breakage of the elastic tube 100, 100).

The metal thin film coating part 220 is formed by spraying and coating a liquid containing a metal component on the outer circumferential surface of the elastic mesh net 210 or by attaching a thin film including a metal component to the metal thin film coating part 220 The concrete pipe 3 can be easily peeled off from the concrete pipe 3 after curing.

A release preventing member 211 is provided at one end of the end portion of the elastic mesh net 210. The release preventing member 211 protrudes from one side or both sides of the end of the elastic mesh net 210, And is fixed to one open side of the branch tube 100 and prevents the deviation of the fixed position of the elastic mesh net 210 by locating the elastic mesh net 210 on the outer circumferential surface of the elastic tube 100.

The release preventing member 211 is bent inwardly from the open end of the elastic tube 100 drawn into the inside of the elastic mesh net 210, One end of which is wrapped around the open end of the expansion tube (100).

The release preventing member 211 may be provided with a material for providing an adhesive force to the one side of the release preventing member 211 so as to be inserted and fixed to the inside of the open end of the elastic tube 100 The cap member 170 or the cap member 170 'of the other embodiment is fixedly held by the release preventing member 211 which is pulled inwardly around the opened end of the elastic member 100, And various methods by which the elastic mesh net 210 can be fixed and fixed to the outer circumferential surface of the elastic tube 100.

The operation of the length-adjustable paper tube sleeve 1 having such a structure as described above will be described as follows.

The elastic tube 100 according to an embodiment of the present invention is formed of a paper material and is formed of an upper branch tube 110, a middle branch tube 120 and a lower branch tube 130. The upper branch tube 110 and the lower branch tube 130 Are formed on both sides of the central branch pipe 120 and the upper and lower branch pipes 110 and 130 are closely attached to the outer peripheral surface of the central branch pipe 120 The length of the elastic tube 100 can be easily adjusted by the frictional force between the first and second tubes 120 and 120, thereby improving the working efficiency in the installation of the sleeve.

The extension pipe 100 according to the embodiment of the present invention is provided with a scale part 150 on the outer circumferential surface of which the depth of the extension pipe 100 to be poured into the concrete 3, The length of the branch pipe 110 and the lower branch pipe 130 can be easily visually confirmed by the outer circumferential surface of the central branch pipe 120 so that the depth at which the extension pipe 100 is poured into the concrete 3, It is possible to precisely control the extension and contraction length of the elastic member 100.

The cap member 170 according to an embodiment of the present invention includes a cap body 171 that is inserted into and coupled to the inside of the expansion and contraction branch pipe 100 and protrudes from one side of the upper surface of the cap body 171, 100 and a fixing protrusion member 172 for fixing a wall or a formwork (not shown), and is connected to one side or both side openings of the expansion tube 100, Thereby preventing the concrete 3 from being drawn in.

The cap member 170 may be applied to various embodiments according to the type of the mold to which the elastic member 100 is applied. In another embodiment, the cap member 170 ' So that one side is inserted into the open inner side of the expansion tube 100 and coupled.

In another embodiment of the present invention, a pair of stopping protrusions 121 are formed at both ends of the center tube 120 constituting the elastic tube 100, and the end portions of the upper and lower branch tubes 110 and 130 The upper and lower branch pipes 110 and 130 are slid along the outer circumferential surface of the central branch pipe 120 so that the upper and lower branch pipes 130 and 130 are slidably engaged with each other, And the step 140 prevent the upper and lower branch pipes 110 and 130 from being separated from the central branch pipe 120 by providing mutual engagement.

A gap adjusting member 180 is coupled to an outer circumferential surface of the center tube 120. The gap adjusting member 180 is coupled to an outer circumferential surface of the center tube 120, The distance between the upper branch pipe 110 and the lower branch pipe 130 is not narrowed so that the length of the extension pipe 100 according to the depth of the concrete 3 can be variously and conveniently adjusted And the working efficiency is improved.

The hinge member 184 is coupled to a side of the hinge member 184 so that both sides of the hinge member 184 are pivoted or wedged around the hinge member 184 to be fastened to the outer peripheral surface of the central branch pipe 120, So that the extension and retraction length of the elastic tube 100 can be easily adjusted.

The fixing part 160 according to an embodiment of the present invention fixes the expansion tube 100 to the mold so that the fixing part 160 is fixed to the mold according to the type of the mold to which the expansion tube 100 is fixed A fixing clip 161 to be described below is installed when the fixing part 160 is applied to the Euroform formwork 4 and the fixing part 160 is applied to the aluminum foam formwork 5 The fixing pin 162 to be described below is installed to fix the expansion tube 100.

A fixing clip 161 is applied to the fixing part 160 to fix the expansion tube 100 to the Euroform form 4. The fixing clip 161 is fixed to the Euroform formwork 4 by at least one And the end of the extensible orifice is inserted into a space between the first vertical plate 161-3 and the second vertical plate 161-4 of the fixing clip 161 so that the elastic tube 100 is inserted into the gap between the first and second vertical plates 161-3, (4).

A fixing pin 162 is applied to the fixing part 160 to fix the extension pipe 100 to the aluminum foam form 5. The fixing pin 162 is coupled to the opening of the expansion pipe 100, The other side of the cap member 170 'presses the upper surface of the cap member 170' to penetrate the upper surface of the cap member 170 'of the other embodiment to be connected to the aluminum foam formwork 5, Is firmly fixed to the aluminum foam mold (5).

The branch pipe coating part according to an embodiment of the present invention is provided in the form of a polymer film on the outer peripheral surface of the expansion pipe 100 to improve the fire resistance, water resistance and corrosion resistance of the expansion pipe 100.

The peeling member 200 according to an embodiment of the present invention is formed of an elastic mesh net 210 and a metal thin film coating part 220 and is provided on the outer circumferential surface of the expansion and contraction branch pipe 100, Thereby facilitating the removal of the elastic member 100.

The elastic mesh net 210 is formed of a material having elasticity and elasticity to cover the outer circumferential surface of the elastic tube 100 and facilitate removal of the elastic tube 100 from the concrete 3 that has been cured, There is an effect of minimizing the breakage of the elastic tube 100.

The metal thin film coating unit 220 may be formed by spraying and coating a liquid containing a metal component on the outer circumferential surface of the elastic mesh net 210 or by attaching a thin film containing a metal component to the elastic mesh net 210, (3), it is easy to remove the expansion tube (100) from the concrete (3), which contains a metal component for improving the peeling property, and the surface on which the sleeve is removed is smoothly applied .

The release preventing member 211 according to an embodiment of the present invention fixes the elastic mesh net 210 covering the outer circumferential surface of the elastic member 100 and has a protrusion formed on one side of the elastic mesh net 210 The release preventing member 211 is fixed around the open end of the elastic tube 100 to prevent the elastic mesh net 210 from being detached from the correct position.

As described above, the present invention is not limited to the above-described embodiment, but may be applied to a lengthy regulating sleeve according to the present invention. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

100: stretching branch pipe 110: upper branch pipe
120: central tube 121: latching jaw
130: lower branch pipe 140:
150: scale part 160:
161: fixing clip 161-1: bottom plate
161-2: Fixing hole 161-3: First vertical plate
161-4: second vertical plate 162: fixing pin
162-1: vertical bar 162-2: thread
162-3: pressing member 162-4: tightening member
162-5: fixing nut 170: cap member
171: Cap body 172: Fixing projection member
180: spacing adjusting member 181: fastening pipe
182: engaging projection 183: fixing groove
184: hinge member 200: peeling member
210: elastic mesh net 211: release preventing member
220: metal thin film coating part

Claims (10)

1. A length-adjustable branch pipe sleeve which is installed on a mold prior to concrete pouring for forming a pipe on a wall or a slab,
Wherein the upper and lower branch tubes are slidably coupled to the upper and lower branch tubes, the upper branch tube and the lower branch tube being formed of paper, the central branch tube and the lower branch tube being formed on both sides of the central branch tube larger than the diameter of the center branch pipe, A retractable branch tube whose length is adjusted to be spaced apart from each other and which maintains a stretched length by mutual frictional force;
A branch pipe coating part provided on the outer peripheral surface of the expansion pipe for fire resistance, water resistance and corrosion resistance; And
And a peeling member which is provided on an outer circumferential surface of the expansion tube and covers the tube coating portion and peels off the expansion tube after the concrete is cured,
The peeling member
An elastic mesh net covering an outer circumferential surface of the elastic tube and having an elastic force; And
And a metal thin film coating unit coated or coated on an outer circumferential surface of the elastic mesh net to be provided between the concrete and the elastic mesh net,
In the elastic mesh net,
And an escape prevention member protruding from one end or both sides of the end portion and fixed to one side or both sides of the open end of the expansion and contraction branch pipe to prevent the elastic mesh network from being separated from the outer periphery of the elastic pipe network,
The release-
The elastic mesh net is bent to the inside of the open end of the elastic tube pulled in the inside of the elastic mesh net and is fixed by wrapping the open end of the elastic tube,
The above-
And a gap adjusting member coupled to an outer circumferential surface of the center tube so as to prevent the distance between the upper and lower branch tubes from being narrowed while both ends of the gap adjusting member are engaged with the upper and lower branch tubes,
The space-
A coupling tube having one end joined to the hinge member and being engaged with the outer circumferential surface of the center tube by being widened or contracted while the other end rotates about the hinge member;
A coupling protrusion formed on one side of the other end of the fastening tube; And
And a fixing groove formed at the other end of the clamping pipe and fixing the clamping pipe to each other by insertion of the coupling protrusion.
delete delete The method according to claim 1,
Wherein the tube coating portion is provided on the outer circumferential surface of the expansion tube in the form of a polymer film in a thickness of 10 to 50 占 퐉.
The method according to claim 1,
Further comprising a cap member coupled to both side openings to prevent foreign matter or the concrete from being drawn in.
The method according to claim 1,
The above-
And a scale part provided on an outer circumferential surface of the upper and lower core tubes so as to confirm a length of the upper and lower branch pipes and a depth of the concrete pipe, Branch sleeve.
The method according to claim 1,
The above-
A step formed at each end of the upper branch and the lower branch to bend toward the central branch; And
Further comprising a locking protrusion formed at both ends of the center tube to prevent the upper and lower branch tubes from being detached from the center tube while being caught by the step. .
delete delete The method according to claim 1,
The above-
Further comprising: a fixing unit installed on the die to fix the extension tube in a fixed position.

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