JPH05222838A - Form clamping device - Google Patents

Abstract

PURPOSE:To enable a form to be easily clamped by arranging a 3-form metal fittings having a central hole, and lock metal fittings with base sections to be rotatably supported on the respective sides for retaining the central hole between, and with shank sections to be extended from the base sections, to be exposed outside the metal fittings. CONSTITUTION:By a separator 5, a space according to the thickness of the wall of a building is secured, and form veneer plates 4 are arranged to be confronted with each other. After that, on the bolt section of P concrete 6 to be projected by penetrating the veneer plate 4, a bolt 7 is fitted to be engaged with a screw. After that, along the surface of the veneer plate 4, one pipe 8 is vertically set, and two pipes 8 are horizontally set. Besides, a form clamping device is fitted on the bolt 7 via the central hole 1a of a 3-form metal fittings 1 and is engaged with the pipe 8 and after that, the shank sections 2b of respective lock metal fittings 2 are set to be inclined to the side of the 3-form metal fittings 1, and the rugged sections 2a of the respective lock metal fittings 2 are engaged with the male screw of the bolt 7, and by the lock metal fittings 2, the bolt 7 is drawn near the rear section side of the 3-form metal fittings 1. As a result, overhauling work can be efficiently executed, and a strong clamping state can be kept.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a form tightening tool commonly referred to as a form tie used for tightening a form in a form work for forming a wall of a building.

[0002]

2. Description of the Related Art As one of the most advanced form clamps used in form work, the one shown in FIG. 2 is known. This formwork clamp has two protrusions 9a on the back.
And a lock fitting 10 having a cam portion 10a whose height from the abdomen differs in several steps on the back and a long hole 10b formed therein, and the center of the three-shape fitting 9 and the lock fitting 1
It is composed of a bolt 11 which is inserted into the zero long hole 10b.

[0003]

In the above-described mold clamping device, the bolt 11 is attached to the mold veneer plate, the single pipe 8 is arranged along the surface of the mold veneer plate, and then the three mold fittings 9 are attached.
By rotating the lock fitting 10 arranged at a right angle to 90 ° to bring it to the state shown in FIG. 2, the mold can be easily tightened. However, the bolt 11
Since the length is constant, it is preferable to arrange the single pipe pipes 8 in a double manner as shown in the figure, but in the case of arranging them in a single manner, the formwork cannot be clamped at all. Further, since the three-type metal fitting 9 and the lock metal fitting 10 are centrally arranged at one end of the bolt 11, the load is concentrated at a position distant from the mounting single part, and the hand at the time of mounting the bolt 11 on the formwork veneer plate becomes wavy. Is hard to do.

It is an object of the present invention to provide a mold clamping tool which can easily clamp and dismantle a mold regardless of the size of the space between the mold and the mold.

[0005]

In order to achieve the above-mentioned object, the mold clamping device of the present invention comprises a three-shaped metal fitting having a central hole and a base rotatably supported on each side sandwiching the central hole. In addition, the handle portion extending from the base portion is exposed to the outside of the three-type metal fitting, and the two lock metal fittings are provided with concavo-convex portions formed on the opposite end portions of the base portion.

[0006]

[Operation] In the mold clamping tool configured as described above, the bolt is attached to the mold, the single pipe is arranged along the surface of the mold, and then the mold clamping tool is attached to the bolt. When the grip portion of each lock fitting is tilted, the unevenness of each lock fitting is engaged with the male screw of the bolt to tighten the mold.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the mold clamping device of the present invention will be described with reference to FIG.

The mold clamping tool is composed of a three-shaped metal fitting 1 and a lock metal fitting 2 rotatably supported by the three metal fitting 1.

The three-type metal fitting 1 has a basic shape which is not much different from that of the conventional one, and two recesses for receiving the single pipe 8 are formed in the abdomen, and the bolt 7 is inserted in the back. A non-threaded central hole 1a is formed, and holes 1b for attaching the lock fittings 2 are formed on both sides of the central hole 1a.

The base of each lock fitting 2 is rotatably supported by a lock fitting support shaft 3 provided on the three-shape fitting 1, and a grip portion 2b extending from the base is a hole 1 of the three-shape fitting 1.
It is exposed from b. Concavities and convexities 2a having a pitch equal to the male thread pitch of the bolts 7 are formed at the tips of the bases of the lock fittings 2 that face each other. Each lock fitting 2
When the handle portion 2b is tilted to the side of the 3 type metal fitting 1, the unevenness 2a
Is a bolt 7 inserted through the center hole 1a of the three-type metal fitting 1.
Are arranged so as to be engaged with the male screw of.

The mold clamping device thus constructed is used as follows. That is, first, the separator 5
The formwork veneer plates 4 are arranged so as to face each other with a space corresponding to the wall thickness of the building, and bolts 7 are attached to the bolt portions of the P-con 6 protruding through the formwork veneer plate 4 by screw engagement. Be done. Next, in order to prevent the formwork plywood 4 from waviness, along the surface of the formwork veneer plate 4, usually a vertical 1
Two single and horizontal pipes 8 are arranged as shown in FIG. Then, in order to fix each single pipe 8, a mold clamp is attached to the bolt 7 through the center hole 1a of the three-type metal fitting 1, and the grip portion 2b of each lock metal fitting 2 is attached to the three-type metal fitting 1 side. By tilting it down, the unevenness 2a of each lock fitting 2 becomes
The male screw is engaged to complete the tightening of the form. At this time, the engagement between the unevenness 2a of each locking metal fitting 2 and the bolt 7 starts from the back side of the three-type metal fitting 1, and as if the grip portion 2b is tilted to the three-type metal fitting 1 side, it is as if each locking metal fitting 2 is the bolt 7. To pull the three-type metal fitting 1 toward the back side. By the way, there is a case where the single pipe 8 can be arranged only vertically or horizontally depending on the location of the structure of the building, but even in that case, the mounting position of the mold fastening tool with respect to the bolt 7 is one single pipe 8. The mold can be tightened in exactly the same manner only by approaching the mold veneer plate 4 side for the thickness.

[0012]

Since the present invention is constructed as described above, it has the following effects.

That is, even if the single pipe pipe along the formwork is double or single, the work of tightening and disassembling the formwork can be efficiently performed by simply inclining and raising the lock fitting. Can be done well. Moreover, it is possible to maintain a strong tightened state. Further, since it is not integrated with the bolt unlike the conventional one, the load is not concentrated on one end of the bolt, and the hand does not fluctuate when the bolt is attached to the mold.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a mold clamping tool of the present invention in use.

FIG. 2 is a perspective view of a conventional mold clamp.

[Explanation of symbols] 1 3 type metal fitting 1a center hole 2 lock metal fitting 2a unevenness 2b grip part 3 lock metal fitting support shaft 4 formwork veneer plate 4 6 P-con 7 bolt 8 single pipe

Claims (1)

[Claims] 1. A type 3 metal fitting having a central hole, and a base portion rotatably supported on each side sandwiching the central hole, and a grip portion extending from the base portion is exposed to the outside of the type 3 metal fitting so as to face each other. A mold clamping tool consisting of two locking metal fittings with concavities and convexities formed at the tip.