JPH081045Y2 - Insert metal fitting support device for formwork - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION This invention is made of concrete U-shaped groove, relates mold to form a like squares, in particular, for supporting the insert fitting into the mold, relates insert fittings supporting device to mold Is.

[0002]

2. Description of the Related Art Applicants have used the insert metal shown in FIGS.
The ingredient was disclosed in Japanese Patent Application No. 2222946. In the figure
There are, 1 is a mold for the U-shaped groove formed by sheet metal, a U-shaped inner frame 3 and fixed by inverted on the upper surface of the base 2, the outer frame 4 on the left and right both sides of the inner frame 3 Further, end plates 5 are erected on both ends of the inner frame 3 and the outer frame 4 in the longitudinal direction and attached to the base 2, respectively, whereby a molding chamber 6 having an open upper surface is formed.

Each of the outer frames 4 is rotatably attached to the outside by a hinge 7, and an insert fitting support device 8 is attached to the outer frame 4. This insert fitting support device 8
Is as shown in FIG. Chi words, a nut 10 welded and fixed outward in the circumferential portion of the through-hole 9 which is formed through the outer frame 4, a screw fitted to the outside of the support shaft 11 in the nut 10. The support shaft 11 has a head portion 11a at the right end.
Is formed in a hexagonal column shape, the base portion is formed on a large diameter screw shaft 11b, and the tip portion is formed on a small diameter columnar cylindrical guide pin 11c. The screw shaft is formed by screw-fitting the nut 10 from the outer side (right side). The left end of 11b and the guide pin 11c are projected into the molding chamber 6. The amount of protrusion is slightly smaller than the width L1 of the molding chamber 6.

[0004] left end of the screw shaft 11b of the support shaft, and the guide pin 11c to fitting the insert fitting 12. The insert member 12, as shown in FIG. 5, the left end is closed by a metal material, and the screw shaft slightly formed into a bottomed cylindrical shape having a larger diameter than the 11b of the support shaft 11, in that <br/> It is formed in a bottomed cylindrical shape having a shallow internal thread 13 on its circumference. Further , a spacer 14 made of soft plastic is projected and fixed to the axial center portion of the left end of the insert fitting 12. The spacer 14 is formed in a conical shape in which the left end 14a (projecting end) has a small diameter, and the small-diameter projection 14b formed in the right end axial center portion.
Is press-fitted and fixed to the left end (bottom wall) of the insert fitting 12. The insert fitting 12 and the spacer 14
Is formed to be slightly longer than the width L1 of the forming chamber 6 described above, and the left end 14a of the spacer 14 is pressed against the inner wall 3 described above.

[0005]

In the above-mentioned conventional one, the insert metal fitting 12 is loosely fitted to the support shaft 11 locked to the outer frame 4, and the flexible spacer 1 attached to the tip end portion.
Since the insert metal fitting 4 is pressed against the inner frame 3 so that the insert metal fitting 12 is sandwiched between the outer frame 4 and the inner frame 3 , the insert metal fitting 12 can be quickly and highly accurately attached to the mold 1 and can be molded. This has the effect of quickly releasing the product. However, the insert metal fitting 12 has a support shaft 1
Since it is loosely fitted in 1, the water containing cement enters into the insert metal fitting 12 from the opening side thereof , and the insert metal fitting 12 is fixed to the support shaft 11 or the female screw formed in the insert metal fitting 12 There was a problem that 13 was clogged.

[0006]

Means for Solving the Problems A through hole is formed in one wall of a mold which faces each other at a distance from each other, and a fitting cylinder is projectingly fixed to the outer periphery of the through hole, A support shaft that is detachably fitted to the fitting cylinder is provided, and an O-ring is fitted to the outer circumference of a protruding portion that is projected from the through hole of the support shaft to the inside of the mold. The outer surface of the insert
It is pressed against the fitting hole formed in the inner side, and is intended for clamping the insert fitting between one wall and the other wall of the mold.

[0007] The allowed fitting tube body and a supporting shaft fitted with a screw portion of about one pitch, inserted detachably locking pin radially fitting portion between the support shaft and its mating cylinder be able to.
Further, the protruding portion of the support shaft protruding inward of the through hole may be a tapered shaft having a small diameter at the protruding end.

[0008]

The supporting shaft for supporting the insert fitting is attached to the mold by a fitting cylinder provided in the mold. Insert bracket is fitted to the support shaft by fitting hole provided on the inner side positioning, when closing the wall of the mold, both longitudinal ends is sandwiched between the mold essence is fixed. At this time,
An O-ring seals between the fitting hole and the support shaft.
Fill concrete between the molds, open the molds after it hardens, and take out the concrete product.At that time, the insert metal fittings and the molds fit without removing the support shaft from the molds. The hole is separated from the support shaft, and the support shaft and the O-ring are reused unless they are damaged.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3, the same reference numerals as those in FIG.
Since it has substantially the same structure as, the description thereof will be omitted. In FIG. 1, reference numeral 15 is an insert metal fitting support device attached to the vertical center of the outer frame 4. In the insert fitting support device 15, the fitting cylinder 16 is welded and fixed to the periphery of the through hole 9 formed through the outer frame 4 toward the outside (right side), and the support shaft 17 is attached to the fitting cylinder 16. From the outside.

The fitting cylinder 16 has its inner peripheral surface formed into a smooth circular surface. Further, the support shaft 17 is formed to have a small diameter in four steps sequentially from the right end to the left end, and the head 18 at the right end is formed.
Is formed to have a diameter larger than the inner diameter of the fitting cylinder 16, and the base 1
The projecting portion 2 is formed to have a diameter and a length that closely fit the fitting cylindrical body 16 and the through hole 9 and project into the molding chamber 6.
In 0, the right half portion 20a is formed to have a diameter slightly smaller than the inner diameter of the fitting cylindrical body 16, a pair of O-rings 21 are fitted to the left and right end portions of the right half portion 20a, and the left half portion 20b thereof is fitted.
Is formed to have a smaller diameter than the right half portion 20a. Further, an operation ring 22 for a handle is fixed to the head portion 18.

The support shaft 17 is inserted into the fitting cylinder 16 from the right side (outside), the base portion 19 is fitted into the fitting cylinder 16, and the split pin, that is, the locking pin 23 is fitted. Piling cylinder 1
6 and the base portion 19 are inserted from the orthogonal direction (vertical direction) to prevent movement in the axial direction. Incidentally, the locking pin 23 can be inserted and removed.

A metal insert fitting 25 is fitted into the protruding portion 20 of the support shaft 17. This insert metal fitting 2
5 has a bottomed cylindrical shape with its left end closed, and the right half of the inner circumference is formed into a smooth fitting hole 25a and the left half of the inner circumference is formed into a screw hole 25b. The O-ring 21 provided on the support shaft 17 is formed to have an inner diameter with which the O-ring 21 is pressed.

A plastic spacer 26 is fixed to the left end of the insert fitting 25, that is, the axial center of the bottom wall so as to project leftward. The spacer 26 is formed in a conical shape in which the left end 26a (projecting end) has a small diameter as in the conventional case,
The small-diameter protrusion 26b formed on the right end axis portion is press-fitted and fixed to the left end (bottom wall) of the insert fitting 25. The length including the insert fitting 25 and the spacer 26 is
Formed slightly longer than the width L1 of the molding chamber 6 as in the conventional case,
The left end 26a of the spacer 26 is brought into pressure contact with the inner wall 3 of the frame body 21.

[0014] Figure 2 shows the second embodiment. In FIG. 2, the protruding portion 20-1 of the support shaft 17 is formed into a tapered shaft having a small diameter at the left end, and an O-ring 21-1 is formed at the right end portion of the protruding portion 20-1.
Mating. In addition, the insert fitting 25 has an inner periphery formed into a smooth fitting hole 25a-1 over the entire length thereof, and the O-ring 21-1 provided on the support shaft 17 has the inner diameter of the fitting hole 25a-1. Oh Ru is formed on the inner diameter of the pressure.
The other parts have the same structure as the first embodiment.

[0015] Figure 3 shows the third embodiment. In FIG. 3, a 1-pitch internal thread 16a is formed on the inner periphery of the left end portion of the fitting cylinder 16, and a 1-pitch external thread 19a that is screwed onto the internal thread 16a is formed on the outer periphery of the base 19 of the support shaft 17. As it forms
An O-ring 24 that abuts on the inner circumference of the left portion of the female screw 16a of the fitting cylinder 16 is fitted to the outer circumference of the left portion of the male screw 19a. In addition , the protrusion 20-2 of the support shaft 17 is formed as an equal-diameter shaft from the right end to the left end, the O-ring 21-2 is fitted to the right end of the protrusion 20-2, and the right end of the base 19 ( A rod-shaped operation bar 22-1 is made orthogonal to the outer end) and fixed by welding. Others have the same structure as in the second embodiment.

Next, the usage of the above embodiment will be described. First, with the outer frame 4 rotated outward as shown by the phantom line in FIG. 4, the support shaft 17 is attached from the outside to the fitting cylinder 1.
Fit to 6. In this case, in FIG. 1 and FIG. 2, the base 19 is pushed into the fitting cylindrical body 16 and the locking pin 2
3 is inserted into the base 19 and the fitting cylinder 16 from the direction perpendicular to the base 19 and the fitting cylinder 16 to prevent the support shaft 17 from coming off. Further , in FIG. 3, the base portion 19 is screw-fitted to the fitting cylinder body 19,
The locking pin 23 is inserted through the base portion 19 and the fitting cylindrical body 16 in a direction orthogonal thereto to prevent the support shaft 17 from coming off.

Next, the protruding portion 20 (2
The insert metal fitting 25 is fitted to 0-1). Then, the O-ring 21 (21-1, 21 provided on the protrusion 20 is provided.
-2) is the fitting hole 25a (25a- of the insert fitting 25.
The insert fitting 25 is supported by the support shaft 17 while being pressed against 1), and the fitting portion between the support shaft 17 and the opening of the insert fitting 25 is sealed by the O-ring 21 (21-1). In this case, in FIG. 1, the insert fitting 25 is coaxially supported by the support shaft 17 by the pair of left and right O-rings 21. In addition, in FIGS. 1 and 2, the left half portion 20b having a small diameter or the tapered protruding portion 20-1 is provided.
This facilitates the detachment of the insert fitting 25 from the support shaft 17 after molding. In addition, in FIG.
The left end of the fitting portion between the fitting cylinder 16 and the base 19 of the support shaft 17 is sealed by the water, and water containing cement enters the fitting part between the fitting cylinder 16 and the base 19 during molding. Disappear.

When the outer frame 4 approaches the inner frame 3 in this state , that is, when assembled, the left end 26a of the spacer 26 abuts the inner frame 3 with a small area, and the insert metal fitting 25 is sandwiched between the outer frame 4 and the inner frame 3. As a result, the axial movement is blocked. In this case, the insert fitting 25 is the O-ring 21 (21-1, 2 or 2).
Since it is elastically locked to the support shaft 17 via 1-2), it does not accidentally fall off the support shaft 17 when the outer frame 4 is assembled.

When the molding chamber 6 is filled with ready-mixed concrete, the fitting portion between the support shaft 17 and the insert fitting 25 is sealed by the O-ring 21 (21-1). containing cement water ceases to enter proceed to, with no longer impaired function of the insert fitting 25, the support shaft 17 will not stick to the insert fitting 25, rotating the outer frame 4 outward upon release of the molded product Then, the support shaft 17 can be smoothly separated from the insert fitting 25.

[0020]

As described above, according to the present invention, since the present invention elastically supports the insert fitting on the support shaft attached to the form via the O-ring, the insert fitting can be quickly attached to the form. And can be installed with a large holding force
It In addition, water containing cement does not enter the insert fitting during molding, and the molded product can be released from the mold quickly and easily. At that time, the support shaft and O-ring are left on the mold side.
It is reusable and economical as long as it is not damaged.
It Also, the support shaft can be slid in the axial direction on the fitting cylinder fixed to the form, or can be fitted with a screw part with a small pitch, and the locking pin can be attached to and detached from both fitting parts from the orthogonal direction. since so inserted, attached to the formwork of the support shaft, remove to have a variety of effects such as may quickly.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part of a second embodiment of the present invention.

FIG. 3 is a cross-sectional view of an essential part showing a third embodiment of the present invention.

FIG. 4 is a sectional view of the entire apparatus showing a conventional example.

FIG. 5 is a cross-sectional view of a main part showing a conventional example.

[Explanation of symbols]

 1 ... ・ Form 2 ... Base 3 ... Inner frame 4 ... Outer frame 5 ... End plate 6 ... Molding chamber 7 ... Hinge 9 ... .... Through hole 15 ... Insert support device 16 ... Fitting cylinder 16a ... Female thread 17 ... Support shaft 18 ... Head 19 ... Base 19a ...・ Male screw 20 ・ ・ ・ ・ Projection part 20a ・ ・ ・ Right half part 20b ・ ・ ・ Left half part 21 ・ ・ ・ ・ O ring 22 ・ ・ ・ ・ ・ ・ Operating ring 23 ・ ・ ・ ・ ・ ・ Locking pin 24 ・ ・ ・・ O-ring 25 ・ ・ ・ ・ Insert fitting 25a ・ ・ ・ Fitting hole 25b ・ ・ ・ Screw hole 26 ・ ・ ・ ・ Spacer 26a ・ ・ ・ Left end (protruding end) 26b ・ ・ ・ Projection

Claims (3)

[Scope of utility model registration request] 1. A through hole is formed in one wall of a model that faces each other at a distance from each other, and a fitting cylinder is projectingly fixed to an outer periphery of the through hole, and the fitting cylinder is fixed. A support shaft that is detachably fitted to the body is provided, and an O-ring is fitted to the outer periphery of the protruding portion that protrudes inward from the through hole of the support shaft, and the outer surface of the O-ring is an insert fitting. fitted formed on the inner side of the
An insert fitting support device for a mold, wherein the insert fitting is pressed into contact with the fitting hole and the insert fitting is sandwiched between one wall and the other wall of the mold. 2. The fitting cylinder and the support shaft are fitted to each other with a screw portion having a pitch of about 1 pitch, and a locking pin can be attached to and detached from the fitting portion of the fitting cylinder and the support shaft in the radial direction. The insert fitting support device for a mold according to claim 1, wherein the insert fitting support device is inserted. 3. The insert fitting supporting device for a mold according to claim 1, wherein the projecting portion of the supporting shaft projecting inward of the through hole is a tapered shaft having a small projecting end.