JPH084244Y2 - Insert metal fitting support device for formwork - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold for molding concrete U-shaped grooves, pits and the like, and more particularly to a device for supporting insert metal fittings for supporting insert metal fittings on the mold.

[0002]

2. Description of the Related Art As a conventional technique, the one described in Japanese Patent Application No. 2-22946 previously filed by the present applicant,
That is, there were those shown in FIGS. 2 and 3. In FIG. 2, reference numeral 1 is a frame for a U-shaped groove formed of a sheet metal material,
Invert and fix the U-shaped inner frame 3 on the upper surface of the base 2,
An outer frame 4 is provided on both left and right sides of the inner frame 3, and end plates 5 are erected on both ends of the inner frame 3 and the outer frame 4 in the longitudinal direction, and are attached to the base 2, respectively.
To form.

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. That is, the nut 10 is welded and fixed to the peripheral portion of the through hole 9 penetratingly formed in the outer frame 4, and the support shaft 11 is screwed into the nut 10 from the outside. The support shaft 11 has a head 11a at the right end formed in a hexagonal column shape, a base portion formed in a large diameter screw shaft 11b, and a tip portion formed in a small diameter columnar cylindrical guide pin 11c. From the outer side (right side) Screw shaft 1 by screwing into the nut 10
The left end of 1b 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.

The insert fitting 12 is fitted to the left end of the screw shaft 11b of the support shaft and the guide pin 11c.
As shown in FIG. 3, the insert fitting 12 has a left end closed by a metal material and the screw shaft 11b of the support shaft 11.
It is formed in a bottomed cylindrical shape having a slightly larger diameter than that, and is formed in a bottomed cylindrical shape having a shallow lead groove 13 on the inner periphery thereof.
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 (protruding end) has a small diameter, and a small-diameter projection 14b formed at the right end shaft center is press-fitted and fixed to the left end (bottom wall) of the insert fitting 12. . The length including the insert metal fitting 12 and the spacer 14 is formed to be slightly longer than the width L1 of the molding chamber 6 described above, and the left end 14a of the spacer 14 is brought into pressure contact with the inner wall 3 described above.

[0005]

In the above-mentioned prior art, the nut 10 is welded and fixed to the outer frame 4, and the screw shaft 11b of the support shaft 11 is screw-fitted to the nut 10. 4, it is necessary to attach and detach the support shaft 11 to and from the support shaft 11, and at the time of molding, water containing cement passes through the through hole 9 and enters the screw fitting portion between the nut 10 and the screw shaft 11b. There is a drawback that 11 is fixed to the nut 10 and cannot be separated. It is an object of the present invention to obtain a novel insert metal fitting supporting device for a mold which solves the above-mentioned drawbacks.

[0006]

Means for Solving the Problems The present invention is configured as follows to achieve the above object. That is,
A through hole is formed through one wall of the form frame facing each other with a space therebetween, and a fitting cylinder is projectingly fixed to the outer periphery of the through hole toward the outside, and a supporting shaft is attached to the fitting cylinder. Is removably loosely fitted, and a locking pin is removably inserted in the fitting portion between the fitting cylinder and the support shaft in the radial direction so as to be the support shaft and the through hole and the fitting cylinder. A cylindrical insert metal fitting with a bottom made of a metal material is fitted slidably in the axial direction on the protruding part that protrudes inward from the body, and protrudes outward and in the axial direction on the bottom wall of this insert metal fitting. A flexible spacer having a small diameter end is fixed, and the protruding end of the spacer is pressed against the inner surface of the other wall of the mold.

It is preferable that a lateral hole communicating with the outside is formed in the base of the fitting cylinder. Further, the protruding portion of the support shaft may be a tapered shaft having a small diameter at the protruding end.

[0008]

Since the present invention has the above-mentioned structure, the support shaft can be fitted or disengaged only by moving the support shaft in the axial direction without rotating the fitting shaft. Further, by inserting or withdrawing the locking pin into or from the fitting portion between the support shaft and the fitting cylinder, the support shaft can be fitted into or removed from the fitting cylinder. Further, when the insert fitting is fitted to the support shaft, the opening fitting and the protruding end portion of the spacer of the insert fitting come into contact with one wall and the other wall of the mold to prevent the insert fitting from moving in the axial direction. Be blocked. In addition, water containing cement that flows from the through hole toward the fitting cylinder during molding flows out through the lateral hole formed at the base of the fitting cylinder and enters the fitting part between the fitting cylinder and the support shaft. Will not do.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In FIG. 1, the parts having the same reference numerals as those in FIG.
Since the structure is almost the same as that of No. 1, its explanation is omitted. FIG.
In the figure, 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 outward (to the right) to the peripheral portion of the through hole 9 formed through the outer frame 4, and the support shaft 17 is attached to the fitting cylinder 16. From the outside (right side).

The fitting cylinder 16 has its inner peripheral surface formed into a smooth circular surface, and a lateral hole 16a is formed through the lower wall of the base. Further, the support shaft 17 is formed to have a small diameter in three steps in sequence from the right end to the left end, the head 18 at the right end is formed to have a diameter larger than the inner diameter of the fitting cylinder 16, and the base 19 is formed to the fitting cylinder. The protrusion 20 that is formed to have a diameter and a length that loosely fits the body 16 and the through hole 9 and that protrudes into the molding chamber 6 is formed as a tapered shaft that gradually decreases in diameter toward the left end. An operating ring 22 for a handle is fixed to the head 18.

The support shaft 17 is inserted into the fitting cylinder 16 from the right side (outer side), the base portion 19 thereof is fitted into the fitting cylinder 16, and the split pin, that is, the locking pin 23 is inserted into the fitting shaft 16. The fitting cylinder 16 and the base 19 are inserted from the orthogonal direction (vertical direction) to prevent axial movement. 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 is formed into a bottomed cylinder whose left end is closed,
The inner circumference is formed into a smooth fitting hole 25a. This fitting hole 25
The inner diameter of a is formed so as to be closely fitted to the base portion (right end) of the protruding portion 20.

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. This spacer 26 is formed in a conical shape with a small diameter at the left end 26a (protruding end) as in the conventional case, and a small diameter projection 26b formed at the right end shaft center is press-fitted into the left end (bottom wall) of the insert fitting 25. And fix it. The length including the insert metal fitting 25 and the spacer 26 is formed to be slightly longer than the width L1 of the molding chamber 6 as in the conventional case, and the left end 26a of the spacer 26 is pressed against the inner wall 3 of the frame body 1.

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. 2, the support shaft 17 is fitted into the fitting cylinder 16 from the outside, and the locking pin 23 is fitted into the base 19 and the fitting. The support shaft 17 is prevented from coming off by being inserted into the coupling cylinder body 16 from the orthogonal direction (above). Next, the insert fitting 25 is fitted into the protruding portion 20 of the support shaft 17, and then the outer frame 4 is inserted into the inner frame 3.
When approaching or assembling, the left end 26a of the spacer 26 comes into contact with the inner frame 3 with a small area, and the insert metal fitting 25 moves to the outer frame 4
It is sandwiched between the inner frame 3 and the inner frame 3 and is prevented from moving in the axial direction.

In this state, the molding chamber 6 is filled with green concrete. In this case, water containing cement flowing out from the molding chamber 6 through the through hole 9 toward the fitting cylinder 16 is discharged to the outside from the lateral hole 16a formed at the base of the fitting cylinder 16 and fitted. It does not enter the fitting portion between the cylindrical body 16 and the support shaft 17. Therefore, the support shaft 17 does not stick to the fitting cylinder 16. Further, since the protruding portion 20 of the support shaft 17 fitted in the insert fitting 25 is a taper shaft having a small diameter on the protruding end side, when the outer frame 4 is rotated outward after molding, the protruding portion 20 is It will come off smoothly from the insert metal fitting 25.

[0016]

As is apparent from the above description, according to the present invention, the support shaft is loosely fitted to the fitting cylinder attached to the form, and the engaging pins are fitted to the fitting portions of the two from the orthogonal direction. Since it is inserted so that it can be inserted and removed, the support shaft can be quickly attached and detached to and from the outer frame. Further, since the water containing cement that flows out toward the fitting cylinder at the time of molding is discharged outward at the base of the fitting cylinder, the support shaft is not fixed to the fitting cylinder. Further, since the projecting portion of the support shaft projecting into the mold is a taper shaft having a small diameter on the projecting end side, the molded product can be released from the mold quickly and easily.

[Brief description of drawings]

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

FIG. 2 is a sectional view of the entire apparatus showing a conventional example.

FIG. 3 is a cross-sectional view of a main part showing a conventional example.

[Explanation of symbols]

 1 Formwork 2 Base 3 Inner Frame 4 Outer Frame 5 End Plate 6 Forming Chamber 7 Hinge 9 Through Hole 15 Insert Supporting Device 16 Fitting Cylindrical Body 16a Horizontal Hole 17 Support Shaft 18 Head 19 Base 20 Protrusion 22 Operation Ring 23 Engagement Stop pin 25 Insert metal fitting 25a Fitting hole 26 Spacer 26a Left end (protruding end) 26b Protrusion

Claims (3)

[Scope of utility model registration request] 1. A through hole is formed through one wall of the formwork which 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 is performed. The support shaft is removably loosely fitted to the tubular body, and the locking pin is removably inserted in the fitting portion between the fitting tubular body and the support shaft in the radial direction so that the support shaft is A cylindrical insert metal fitting with a bottom made of a metal material is slidably fitted in the hole and the protruding part that protrudes inward from the fitting cylinder, and axially outward on the bottom wall of this insert metal fitting. A flexible spacer having a projecting end portion and a projecting end portion formed to have a small diameter is fixed, and the projecting end portion of the spacer is pressed against the inner surface of the other wall of the formwork. Insert metal fitting support device. 2. The insert fitting supporting device for a formwork according to claim 1, wherein a lateral hole communicating with the outside is formed in a base portion of the fitting cylinder. 3. The support shaft, which is an inward projection from the through hole and the fitting cylinder, is a tapered shaft having a small diameter at the projection end. Insert metal fitting support device for the described formwork.