JPH05220723A - Installing tool for separator for mold and its manufacture - Google Patents

Abstract

PURPOSE:To provide an installing tool for a separator for mold in which concrete can be filled without spaces and beautify cement finish after releasing the mold is carried out. CONSTITUTION:A device is composed of a metal installing tool main body 1 composed of a metal cylindrical body of square tubular shape with its upper and lower faces open, a screw bar 2 and a synthetic resin cone 3 of the dish type mounted removably on the screw bar 2 and a notch engaging section 11 engaging with the end of a separator formed on the outer wall face of the metal installing tool main body 1, while a screw hole 12 screwed with the screw bar 2 is formed on the front wall face. Concrete, therefore, is filled inside the tool installing main body 1 through upper and lower openings. The cone 3 is removable and can be removed after curing concrete and filled therein after removing the cement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork separator attachment and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, as a fixture for fixing a concrete pouring formwork, a fixture which is screwed into a male screw portion formed at an end of a separator has been often used, but the work of attaching the separator is troublesome. Met. On the other hand, Japanese Utility Model Application Laid-Open No. 59-48959 proposes a fitting made of a resin molded body into which the end portions of the separator are fitted.

However, the above-mentioned proposed fixture is U-shaped.
Since it is formed of a V-shaped resin molded body, there is a problem that the concrete does not sufficiently go under the fixture and a void is likely to occur. In addition, since the fixture is installed in close contact with the inner surface of the formwork, there is a problem that the fixture is always exposed on the concrete wall. When hiding with cement application, the fixture and the cement do not adhere well. Met.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the conventional and proposed separator fixtures, and the separator can be easily attached to the fixtures and the concrete can be filled without gaps. An object of the present invention is to provide a fixture for a mold separator and a method for manufacturing the same, which is capable of performing cement finishing after removing the mold.

[0005]

In order to achieve the above-mentioned object, the separator attachment for a mold according to claim 1 of the present invention comprises:
A tubular metal fixture body 1 having an open upper and lower surface, which has a notch engaging portion for engaging an end portion of a separator on a rear wall surface and has a screw hole to be screwed with a screw on a front wall surface, and the screw. The screw rod is screwed into the hole, and a dish-shaped synthetic resin cone is detachably attached to the screw rod.

According to the second aspect of the present invention, in the above-mentioned structure, the screw rod has a screw portion in which the screw rod is screwed into the screw hole of the metal fixture body, and a screw portion which is screwed into the mold clamping rod. And a breaking groove is formed in the vicinity of a screw portion that is screwed into a screw hole of the metal fixture body.

According to the third aspect of the present invention, in the above structure, the screw hole is provided by forming a screw in an annular projecting hole projecting outward from the wall surface of the main body of the fixture. It is characterized in that a recess for accommodating the annular projecting hole is provided on the inner surface of the synthetic resin cone.

Further, the method for manufacturing the fitting of the present invention relates to the manufacturing of the fitting main body having the above-mentioned structure of the fitting, and a plurality of metal pipes having a cylindrical or square tube shape are cut into appropriate lengths. After forming the metal tubular body, the upper half of one side wall surface of the tubular body is cut out to form a notch engaging portion having an open upper surface, and a retaining tongue piece is provided on the inner surface of the notch engaging portion. And a screw hole is provided on a side wall surface facing the cutout engaging portion.

According to the manufacturing method of claim 5, in the manufacturing method described above, a hole is bored from the inner side to the outer side of the wall surface of the metal cylinder to form an annular protruding hole in which the wall surface of the cylinder protrudes outward. After being formed, a screw is formed on the inner circumference of the annular projection hole.

[0010]

In the fixture constructed as described above, since the metal fixture main body is in the shape of a cylinder whose upper and lower surfaces are open, concrete will not be sufficiently filled into the fixture main body and uneven filling will not occur. It is firmly buried in.

Further, since the screw rod screwed into the screw hole of the fixture main body and the dish-shaped synthetic resin cone which is detachably attached to the screw rod are provided, the mold frame and the fixture main body are provided. After filling and hardening the concrete by interposing a dish-shaped cone between them, remove the cone from the screw rod to expose the concave part where the cone was removed on the concrete surface, and cement in this concave part. The fixture body can be completely hidden inside the concrete hardened body.

Further, the screw rod is provided at both ends with a screw portion to be screwed into the screw hole of the metal fixture main body and a screw portion to be screwed with the mold clamping rod, so that the screw hole of the metal fixture main body is provided. If a breaking groove is formed in the vicinity of the screw part to be screwed into the screw rod, the screw rod can be easily broken after the concrete is hardened, and the dish-shaped cone can be removed and the screw rod can be broken at the same time.

Further, the screw hole is formed by an annular projecting hole projecting outward from the wall surface of the fixture body, while a recess for accommodating the annular projecting hole is provided on the inner surface of the dish-shaped synthetic resin cone. If the screw rod and screw hole are left in contact with each other, the screw rod can be easily rotated after the hardening so as to remove the screw rod from the fixture body.

Further, in the method of manufacturing the fixture of the present invention,
Since a plurality of metal cylinders are formed by cutting a cylindrical or prismatic metal pipe material to an appropriate length, many metal fixtures can be inexpensively formed using the metal cylinder, and sheet metal can be used. Unlike the bending method, it can be mass-produced with minimal complicated bending work.

Further, when the annular projecting hole is formed by forming a hole from the inner side to the outer side of the wall surface of the metal cylindrical body, a deep screw hole having a wall thickness larger than that of the cylindrical body is formed to prevent the screw rod from being slid. it can.

[0016]

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an embodiment of attachment of a mold separator of the present invention, which is detachably attached to a metal fixture body 1 made of a rectangular tubular metal tubular body whose upper and lower surfaces are open, and a screw rod 2. And a notch engaging portion 11 that engages with the end of the separator is provided on the rear wall surface of the metal fixture body 1, and the screw is provided on the front wall surface. A screw rod 12 is provided which is screwed with the rod 2.
Further, on the inner wall surface of the notch engaging portion 11, slip-preventing tongue pieces 13 for preventing the separator from coming off are provided. The retaining tongues 13 and 13 are formed at the same time as the punching out of the notch engaging portion 11, and a step for this is omitted.

The screw hole 12 is formed by an annular projecting hole projecting toward the front of the fixture main body, and a screw for engaging with the screw rod 2 is formed on the inner surface of the projecting portion.
The screw rod 2 has a screw portion 22 that is screwed into the screw hole 12 of the metal fixture body 1, and a screw portion 2 that is screwed into the mold clamping rod.
3 and 3 are respectively provided at the ends, and a breaking groove 21 is formed in the vicinity of 22 which is screwed into the screw hole 12 of the metal fixture body 1. Further, protrusions 24, 24 for preventing co-rotation are provided in the middle portion of the screw rod.

On the other hand, the synthetic resin cone 3 is formed in the shape of a circular truncated cone, and an insertion hole 31 through which the screw rod 2 is inserted is provided in the central portion. Thus, the truncated cone is formed so that it can be inserted from either the upper bottom surface side (smaller diameter surface side) or the lower bottom surface side (larger diameter surface side).

Around the both ends of the insertion hole 31 of the cone 3, as shown in FIG. 2, a recess having the same size as or a little larger than the outer circumference of the screw hole 12 formed by the annular projecting hole of the fixture body 1. 32 and 33 are provided respectively, and by fitting the screw hole 12 of the attachment body 1 into the recesses 32 and 33, the screwed portion of the attachment body 1 and the screw rod 2 is accommodated in the recess. It is possible.

FIG. 3 and FIG. 4 show an example of the usage state of the fixture of the present invention, in which the screw rod 2 is screwed into the screw hole 12 of the fixture body 1 to be connected to the synthetic resin cone 3. Is attached to the inner surface of the opposing mold frame 4 with the one with the larger diameter being the outer side, and the end of the screw bar 2 projecting to the outside of the frame is connected to the mold clamping rod 5. Further, at the rear end of the attachment body 1, the end 61 of the separator 6 is inserted and locked into the notch engagement portion 11 of the attachment body 1 from above. The concrete 7 is poured into the back of the form, and the interior of the tubular fixture body 1 is filled.

Next, after hardening the concrete 7, as shown in FIG. 4, the form is removed, the screw rod 2 is broken from the breaking groove 21, and the synthetic resin cone 3 is removed from the concrete surface. Recess after removing cone 7
1 is revealed and cement 8 is newly filled in this recess to form a smooth finished surface.

FIGS. 5 and 6 show another example of use of the fixture of the present invention. In the example of use, the cone 3 having the larger diameter is placed outside (the mold side). On the other hand, this example of use is a case in which the smaller diameter of the cone 3 is arranged outside (the mold side), and in this case, after the concrete 7 is hardened, the cone 3 is left and the screw rod 2 is used. After removing or breaking off, the cone end surface remaining on the concrete surface is fitted with a lid (9) of synthetic resin or the like as a finished surface.

Therefore, when smoothness is required as in the case where the concrete surface is exposed and a surface finish such as painting finish is required, the cone having the larger diameter is placed outside (form frame side) like the former. Arranged and used, while
When the concrete surface is covered with a ceiling panel or the like without applying makeup, the smaller cone diameter is placed on the outside (formwork side) like the latter, and a method with quicker work can be selected. is there.

In any of the usage methods, since the fixture main body 1 is formed in a tubular shape with the upper and lower surfaces opened, the concrete 7 is inserted from the upper and lower openings of the fixture main body 1 into the inside of the fixture main body. It will not be filled up with pores and will not cause unexpected depressions on the concrete surface due to insufficient filling.

Next, the method of the present invention for producing such a fixture will be described. FIG. 7 shows an example of the manufacturing method of the present invention. First, a cylindrical metal pipe material A is cut to an appropriate length to form a plurality of metal cylinders B, and then a rectangular cylinder shape. Then, the upper half of one side wall surface of the rectangular tubular body is cut out in a U shape to form a notch engaging portion 11 having an open upper surface, and the notch engaging portion 11 having the U shape is cut into the inner surface. Is provided to form the retaining tongue pieces 13, 13. Further, by forming the hole 12 by punching the side wall surface facing the notch engaging portion 11 from the inner surface side of the cylindrical body, an annular protruding hole is formed in which the cylindrical wall surface projects outward at the peripheral portion of the hole. After that,
A screw is formed on the inner circumference of the annular protruding hole.

The cylindrical tubular body B can be used as it is as a fixture body, but as described above, the cylindrical tubular body B is a rectangular tubular body so that it can be easily engaged with the separator. The shape of the body C is corrected to form the fixture body 1. Therefore, a rectangular tubular metal pipe material may be cut to form a tubular body, and in this case, the forming step for correction can be omitted.

Therefore, according to the above method, it is possible to form the fixture for the separator by simple cutting and punching without the need for molding with an expensive mold material and complicated bending, and the material is made of an inexpensive metal. A plurality of fittings can be manufactured using the pipe material A. Further, since the metal cylinder is processed, the U-shaped notch engaging portion 11 and the retaining tongue piece 13 are
It can be formed simultaneously with cutting with a punch press.

[0028]

As described above, according to the separator attachment for a mold of the present invention, the rear wall surface has the notch engaging portion for engaging the end portion of the separator, and the front wall surface is screwed with the screw. A metal fitting main body on a cylinder having a screw hole having an open upper and lower surface, a screw rod screwed into the screw hole, and a dish-shaped synthetic resin cone detachably attached to the screw rod. Since the metal fixture main body is a tubular shape with the upper and lower surfaces open, the concrete is fully filled into the fixture main body without uneven filling, and is firmly embedded inside the concrete. ..

Since a dish-shaped synthetic resin cone which is detachably mounted is provided, concrete is filled and hardened by interposing the dish-shaped cone between the formwork and the fixture main body. After that, it is easy to remove the cone from the screw rod to expose a concave portion where the cone has been removed on the concrete surface and embed cement in the concave portion to finish the concrete surface to be a smooth surface.

In the method of the present invention, a cylindrical or square tubular metal pipe material is cut into a suitable length to form a plurality of metallic tubular bodies, and then the upper half portion of one side wall surface of the tubular body is formed. And a notch engaging portion having an upper surface opened, a retaining tongue piece is provided on an inner surface of the notch engaging portion, and a screw hole is provided on a side wall surface facing the notch engaging portion. Since it is a method of manufacturing a separator attacher for formwork, it is possible to form many fixtures using metal pipe material, and unlike the method of bending the sheet metal, the troublesome bending work is minimized It is possible to manufacture a fixture having excellent adhesion and low cost at low cost with simple equipment.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating an example of a separator attacher for a mold according to the present invention.

FIG. 2 is a cross-sectional view illustrating a cone of a separator attacher for a mold according to the present invention.

FIG. 3 is a cross-sectional view illustrating a usage state of the formwork separator attachment of the present invention.

FIG. 4 is a cross-sectional view illustrating a finished state after hardening concrete in the use state of FIG.

FIG. 5 is a cross-sectional view illustrating another usage state of the formwork separator attachment of the present invention.

FIG. 6 is a cross-sectional view illustrating a finished state after hardening concrete in the use state of FIG.

FIG. 7 is a perspective view illustrating a step in a method of manufacturing a separator attacher for a mold according to the present invention.

[Explanation of symbols]

 1 Metal Fixture Main Body 2 Screw Rod 3 Synthetic Resin Cone 4 Formwork 5 Formwork Clamping Rod 6 Separator 7 Concrete 11 Notch Engagement Part 12 Screw Hole 21 Breaking Groove

Claims (5)

[Claims] 1. A tubular metal fixture main body having a notch engaging portion on a rear wall surface for engaging with an end portion of a separator and a front wall surface having a screw hole to be engaged with a screw and having an open upper and lower surface. And a mold frame separator mounting tool including a screw rod screwed into the screw hole, and a dish-shaped synthetic resin cone that is detachably attached to the screw rod. 2. A screw of a metal fixture body, wherein the screw rod has a screw part that is screwed into a screw hole of the metal fixture body and a screw part that is screwed with a mold clamping rod at both ends. The formwork separator attachment according to claim 1, wherein a breaking groove is formed in the vicinity of a screw portion that is screwed into the hole. 3. The screw hole is provided by forming a screw in an annular projecting hole projecting outward from the wall surface of the fixture body, while the annular projecting hole is formed on the inner surface of the dish-shaped synthetic resin cone. The mold frame separator fitting according to claim 1 or 2, wherein a recess for accommodating the hole is provided. 4. A cylindrical or rectangular tubular metal pipe material is cut into a suitable length to form a plurality of metallic tubular bodies, and an upper half portion of one side wall surface of the tubular body is cut out to form an upper surface. Forming a notch engaging portion, a retaining tongue piece provided on an inner surface of the notch engaging portion, and a screw hole provided on a side wall surface facing the notch engaging portion. Method for manufacturing separator attachment. 5. A ring-shaped projecting hole is formed by projecting a hole from the inside to the outside of a wall surface of a metal cylinder body, and the cylinder wall surface is projected outward. The method for manufacturing a separator attacher for a mold according to claim 4, wherein