JP3160955U - Through-hole forming mold device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mold device for forming a through hole which can be easily removed after placing and solidifying concrete and which can be reused. SOLUTION: A cylindrical body 3 made of plastics and provided with a split portion 7 continuous in the axial direction and elastically reduced in diameter, and fitted into the cylindrical body 3 to attach the cylindrical body 3 to a predetermined size. A through-hole forming mold device comprising a cylindrical shape holding member 5 having a cylindrical shape. [Selection] Figure 1

Description

  The present invention relates to a through hole forming mold apparatus used for forming a through hole for piping in a concrete building.

  In concrete buildings such as condominiums, through holes are provided for installing pipes on beams and walls. This through-hole is formed by disposing the tubular body in the mold, removing the tubular body after placing and solidifying the concrete.

  The removal of the tubular body is performed by breaking and disassembling the tubular body, so that the tubular body becomes disposable and expensive. Moreover, there was a problem that the removal work took time.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a reusable through-hole forming mold device that can be easily removed after placing and solidifying concrete.

  In this device, a cylindrical body made of plastics and provided with a split portion continuous in the axial direction and elastically reduced in diameter, and fitted into the cylindrical body, the cylindrical body is formed into a predetermined cylindrical shape. Provided is a through-hole forming mold device comprising a cylindrical shape holding member.

  According to the above-described configuration, the cylinder-shaped holding member is fitted and mounted in a cylinder body made of plastics and having elasticity, and a predetermined cylinder shape can be obtained while expanding the cylinder body. A through-hole can be formed in a concrete building by disposing the creak between the molds and removing the coke crete after placement. When the cylindrical shape holding member is removed, the cylindrical body can be removed from the concrete structure by elastically reducing the diameter.

  The cylindrical shape holding member is composed of, for example, a pair of cap bodies that are fitted and attached to the openings at both ends of the cylindrical body, and a plurality of spacers that are fitted and attached to the cylindrical body.

  By adopting a configuration in which the cylindrical body is composed of a pair of single cylinders that are fitted and connected to each other, the cylindrical body length can be adjusted and disposed between the molds.

  In the end edges corresponding to each other of the split part of the cylindrical body, the opposing edge surfaces are in contact with the inclined state, so that the edge surfaces slide to smoothly reduce the diameter of the cylindrical body. It is made easier.

  When the cylindrical shape holding member is a cap body, the cap body removal string is inserted into the cap body and has a structure that prevents the cap body from being pulled out. The cap body can be easily removed.

  In the case where the cylindrical shape holding member is a plurality of spacers, it is configured to include a spacer removal string for connecting and removing a plurality of spacers together, so that the plurality of spacers can be easily held simultaneously with the removal string. Can be removed.

  The through-hole forming die device of the present invention is suitably used for forming a through-hole for piping of a beam or wall in a concrete building.

  According to this device, it is possible to obtain a reusable through-hole forming mold device that can be easily removed after the concrete has been placed and solidified, thereby enabling the construction of through-holes for pipes on walls and walls. The cost can be reduced and the operation can be facilitated.

  Exploded perspective view of an embodiment of a piping through hole forming mold apparatus of the present invention   Assembly perspective view of an embodiment of a pipe through-hole forming mold apparatus of this invention   Sectional view at the time of use of an embodiment of a mold for forming a through-hole for piping of this device   Principal part enlarged view of an embodiment of a mold for forming a through-hole for piping according to this invention   Exploded perspective view of another embodiment of a pipe through-hole forming mold apparatus of the present invention   Sectional view at the time of use of another embodiment of a mold for forming a through-hole for piping of this device

  FIG. 1 is an exploded perspective view of an embodiment of a pipe through hole forming mold apparatus according to the present invention, FIG. 2 is a perspective view when assembled, and FIG. 3 is a sectional view when used.

  The piping through-hole forming mold device 1 includes a vinyl chloride resin cylindrical body (tubular body) 3 and a pair of circular caps 5 made of vinyl chloride resin that are fitted and attached to both end openings 4 of the cylindrical body 3. 5 (cylinder shape holding member). The cylindrical body 3 includes a split portion 7 that is continuous along the axial direction, and the split portion 7 is provided to elastically reduce the diameter from a predetermined cylindrical shape. In the edge portions 8 and 8 corresponding to each other of the split portion 7, as shown in FIG. 4, the opposing edge surfaces 8a and 8a are in contact with the inclined state (inclination angle 45 degrees).

  The cap bodies 5 and 5 are attached to both end openings 4 and 4 of the cylindrical body 3 with the base portions 6 and 6 provided on the inner surface thereof being fitted inside, and in this mounted state, the cylindrical body 3 is elastic in the direction of diameter reduction. Against this, it exhibits a predetermined cylindrical shape, that is, a formed through-hole shape for piping. 10 and 10 are detaching strings for the cap bodies 5 and 5, the both end side portions having the knots 12 and 12 at both ends are on the outer surface side of the cap body 5, and the intermediate portion 16 is on the inner surface side of the cap body 5. Since the knots 12 and 12 cannot be passed through the insertion holes 11 and 11, the removal strings 10 and 10 are pulled out from the cap bodies 5 and 5, respectively. Can not be done.

  Recesses 13 and 13 are provided in openings around the insertion holes 11 and 11 on the outer surface of the cap body 5, and the knots 12 and 12 of the detachable string 10 are accommodated in the recesses 13 and 13 and sealed on the surface thereof. By attaching the tape 14, the outer surfaces of the cap bodies 5, 5 are flush with each other during assembly.

  Next, the use of the above-mentioned piping through-hole forming mold apparatus 1 will be described. Each of 20 and 20 in FIG. 3 is a formwork panel for constructing a concrete structure such as a beam, and the pipe through-hole forming mold apparatus 1 in the horizontal direction in the assembled state of FIG. Placement is fixed. The fixing is performed by appropriately attaching to the formwork panels 20 and 20 and further the reinforcing bar structures provided between the formwork panels 20 and 20, and the outer surfaces of the cap bodies 5 and 5 are respectively formed on the formwork panels 20 and 20. The concrete is placed and solidified between the mold panels 20 and 20 in this state.

  Removal of the piping through-hole forming mold device 1 is performed by first removing the sealing tape 14 after the formwork panels 20 and 20 are removed from the concrete building surface, and pulling the knots 12 and 12 of the string 10 for removal. Then remove the cap bodies 5 and 5. Due to this removal, force is exerted on the cylindrical body 3 in the direction of diameter reduction due to elasticity, and the edge surfaces 8a, 8a of the end edges 8, 8 corresponding to each other of the split part 7 are in contact with the inclined state. Then, the edge surfaces 8a and 8a slide out of each other (in the direction of the arrow in FIG. 4), whereby the cylindrical body 3 is reduced in diameter and its outer peripheral surface is detached from the inner surface of the through hole for piping formed in the concrete building. The cylindrical body 3 is easily removed without being damaged. The cylindrical body 3 removed in this way is reused together with the caps 5 and 5.

  FIG. 5 is an exploded perspective view of another embodiment of the pipe through-hole forming mold apparatus of the present invention, and FIG.

  In the piping through-hole forming mold apparatus 100 in this embodiment, the cylindrical body 101 is composed of a pair of cylindrical single bodies 101a and 101b that are fitted and connected to each other, and five spacers 103 are used as cylindrical shape holding members. . The cylindrical body 101 is made of vinyl chloride resin as in the above embodiment, and includes a split portion 102 that is continuous along the axial direction. Each of the spacers 103 includes three pressing legs 107 that radiate from a central portion 105 including a fixing hole 104. In each spacer 103, the one pressing leg 107a is connected to the other two pressing legs 107b. It is formed wider than that. In addition, the spacer 103 has a diameter corresponding to the cylinders 101a and 101b, that is, the three on the left in FIG. 5 used for the cylinder 101a have a small diameter, and the two on the right used for the cylinder 101b. The thing has a larger diameter. Reference numeral 110 denotes a removal string for connecting the three spacers 103 in the center and removing them integrally.

  Hereinafter, the use of the above-described piping through-hole forming mold apparatus 1 will be described. First, the large and small spacers 103 are fixed in the fixing holes 104 of the central portion 105 with screws 111 at predetermined positions on the inner surfaces of the assembled and arranged form panels 200. On the other hand, the cylindrical body 101 is prepared in which the cylinders 101a and 101b are fitted and connected to each other and the three spacers 103 are connected to each other by the detaching string 110.

  Next, each of the spacers 103 previously attached to the formwork panel 200 is fitted into the circular openings at both ends, and the cylindrical body 101 is attached. In that case, first, the fitting depth of the single cylinders 101a and 101b was increased to slightly shorten the length of the cylindrical body 101, and the inner surface of one mold panel 200 was attached to the opening of the single cylinder 101a. The spacer 103 is fitted together, and then the spacer 103 attached to the inner surface of the other mold panel 200 is fitted into the opening so as to extend the single cylinder 101b outward.

  The cylindrical body 101 is composed of a pair of cylinders 101a and 101b that are fitted and connected to each other, so that the cylindrical body 101 can be easily mounted with the length of the cylindrical body 101 being variable. .

  As described above, each of the spacers 103 is fitted and attached to the inside of the spacer 103, so that the cylindrical body 101 has a cylindrical shape corresponding to the through hole for piping to be formed. At that time, the cylindrical body 101 is stably fixed by pressing and fixing the portion along the split portion 104 with each of the wide pressing legs 107 a of the spacer 103.

  Removal of the piping through-hole forming mold apparatus 100 after the concrete has been cast and solidified first removes each of the spacers 103 on both sides that are integrally fixed thereto simultaneously with the removal of each mold panel 200. Next, the inside of the circular hole formed on the concrete building surface is pulled by holding the end portion 110a of the removal string 110 from one opening (the right-side opening in FIG. 6), and thereby connected to the removal string 110. Pull out the three spacers 103. When the three spacers 103 are removed, force is exerted on the cylindrical body 101 in the direction of diameter reduction due to elasticity, and the edge surfaces of the edge portions corresponding to each other of the split portion 102 are inclined as in the above embodiment. Through-holes for piping in which the edge surfaces slide and come off from each other because of having a configuration in contact with (the configuration shown in FIG. 4), whereby the cylindrical body 101 is reduced in diameter and its outer peripheral surface is formed in a concrete building The cylindrical body 101 is easily removed without being damaged. The cylindrical body 101 removed in this way is reused together with each of the spacers 103.

1 Piping through-hole forming mold device (through-hole forming mold device)
3 Cylindrical body (tubular body)
4 Both ends opening 5 Cap (Cylinder-shaped holding member)
70%

Claims (8)

  A cylindrical body made of plastic and provided with a split portion continuous along the axial direction and elastically reduced in diameter, and a cylindrical shape holding that fits and fits in the cylindrical body to make the cylindrical body a predetermined cylindrical shape A through-hole forming mold device comprising a member.   The through-hole forming die device according to claim 1, wherein the cylindrical shape holding member is composed of a pair of cap bodies fitted and attached to both end openings of the cylindrical body.   The through-hole forming die apparatus according to claim 1, wherein the cylindrical shape holding member includes a plurality of spacers fitted and mounted in the cylindrical body.   The through hole forming mold apparatus according to claim 1 or 3, comprising a pair of cylinders in which the cylinders are fitted and connected to each other.   2. The through hole forming mold device according to claim 1, wherein opposing edge surfaces of the split portions of the cylindrical body are in contact with each other in an inclined state.   The through-hole forming die device according to claim 2, further comprising a string for removing the cap body provided so as to be inserted through the cap body and having a structure for preventing the cap body from being pulled out.   The through hole forming mold apparatus according to claim 3 or 4, further comprising a string for removing the spacer for connecting and removing the plurality of spacers integrally.   The mold device for forming a through-hole according to claim 1, which is used for forming a through-hole for piping in a concrete building.

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