JPH0354887Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention (industrial field of application) The invention is a device for fixing hardware embedded in formwork used in the concrete product manufacturing industry. More specifically, the present invention relates to a device that makes it possible to easily and reliably fix hardware using an insertion/extraction shaft with a grip.

(Prior Art) As an embedded hardware fixing device conventionally used in the concrete product manufacturing industry, a hardware receiver 19 is provided at the bottom of a formwork 18 as shown in FIG.
Then, the exposed part b of the embedded metal fitting 20 from the product is fitted, and the tip of the embedded part a is engaged with the protrusion 22 of the presser rod 21 passed over the formwork 18, and the presser rod 21
A structure in which bolts 23 are fastened to the formwork 18 at both ends is known.

(Problems to be Solved by the Invention) The hardware fixing device described above tightens the bolts 23 at both ends of the presser rod 21 to the formwork 18, so this operation takes time and effort and cannot be fixed or released quickly. However, there was a problem that the molding efficiency did not improve.

The present invention was made to solve the above-mentioned conventional problems, and is a device that can quickly and easily fix and release metal objects from a formwork by inserting and extracting a shaft into a hole in the metal object. is intended to provide.

B. Structure of the invention (means for solving the problem) The means of the invention to achieve the above object are:
The exposed part of the embedded metal part from the product is fitted and supported in the hardware receiving part provided at the bottom of the formwork, and a hole is provided in the lower part of the formwork to sandwich this hole. The structure of the embedded hardware fixing device for concrete formwork allows the shaft to be inserted into and removed from the bearing.

(Function) In the device configured as described above, the insertion/extraction shaft is pulled out and placed outside the hardware receiver provided at the bottom of the formwork as shown in Figure 1, and then inserted into the hardware receiver as shown in the same figure. Place the hardware as shown, hold the handle as shown in Figure 2, and insert the shaft into the hole provided in the bearing of the formwork and the exposed part of the embedded metal.The exposed part of the embedded metal will be exposed. Since the lower edge is pressed against the lower elastic pillow material, it is fixed in the formwork in an accurate upright position. Therefore, when concrete is filled into the formwork, the hardware will not move even with the inflow pressure and will be correctly embedded in the correct position, so when the product hardens and can be removed from the mold, it can be removed by holding the handles. When the shaft is pulled out from the bearing and the hole, the fixation of the hardware to the mold is released and the product can be easily released from the mold.

In addition, in this device, the exposed part b of the embedded metal fitting 7
When the elastic tube 17 is fitted into the hole 11, this elastic tube 17 performs the same function as the elastic pillow material 16 described above.

(Example) Next, an example of a device that fits the present invention will be described based on the drawings.

In Figures 1 and 2 of the drawings, 1 is a formwork for manufacturing concrete sleepers, which is formed to the required length with a cross-sectional shape as shown in the figure, and has a receiving part for the sinkable metal fittings described later in the lower part of the formwork. 2, so that its side shape is as shown in Figures 1 and 2, and its front shape is as shown in Figure 3. Receiving portions 3 and 4 are provided as shown in FIG. 3 to receive the locking edges provided with a difference in height.

Reference numeral 5 denotes a groove provided around the part of the hardware receiving portion 2 that communicates with the formwork 1, into which a sealing member 6 is installed which tightly contacts the embedded hardware described later to prevent slag leakage.

Reference numeral 7 denotes an embeddable metal fitting, which includes a part a embedded in a concrete sleeper (not shown in the drawing) provided with a retainer 8, and an exposed part b from the sleeper.
As shown in the figure, locking edges 9 and 10 with different heights are provided, and a hole 11 is passed through the center laterally.

12 is a hole 1 in the exposed part b of the buried metal object 7.
1, the insertion/extraction shaft is inserted into/extracted from the hole 1 of the hardware receiving part 2.
1, guide holes 13, 13 provided on both sides thereof, and bearings 14, 14 fixed to the formwork 1 in correspondence with these.
When inserted by holding the handle 15, the embedded metal fitting 7 is pressed against the elastic pillow material 16 disposed below and fixed to the formwork so that it does not move.

Reference numeral 17 denotes an elastic cylinder fitted into the hole 11 of the above-mentioned investment metal object 7, and when the insertion/extraction shaft 12 is inserted into this,
It performs the same function as the elastic pillow material 16 described above, but in this case, the insertion/extraction shaft 12 is formed finely to a size corresponding to the elastic cylinder 17.

C. Effect of the invention The device related to the invention fixes the embedded metal object to the formwork by simply fitting and supporting the embedded metal object in the metal receiving part of the formwork and inserting the insertion/extraction shaft into the hole in the exposed part. Since the operation is easy and quick, the efficiency of forming concrete products is greatly improved.

By inserting the insertion/extraction shaft, the locking edge of the embedded hardware is brought into pressure contact with the receiving part of the formwork, and the hardware is fixed to the formwork, so the fixing position, angle, etc. are accurately determined, and
It is securely fixed and does not move when filling with concrete, allowing for highly accurate hardware embedding.

After the product is molded, by pulling out the insertion/extraction shaft, the connection between the hardware and the mold is severed, and the mold can be removed immediately, making the removal operation easy and quick.

It has the following unique effects.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional side view showing an embodiment of the device according to the present invention before fixing the embedded metal fittings. FIG. 2 is a vertical sectional side view showing the embedded metal fittings as described above after being fixed. FIG. 3 is a longitudinal sectional front view of a portion of the same device in which the embedded hardware is supported by the hardware holder, and FIG. 4 is a longitudinal sectional side view showing a partial modification of FIG. 1. FIG. 5 is a longitudinal sectional front view showing a portion of a conventional embedded metal fixture fixing device for concrete formwork. In the figure, 1 is a mold, 2 is a hardware receiving part, 7 is an embedded receiving part, b is an exposed part from the product, 11 is a hole, 12 is an insertion/extraction shaft, 14 is a bearing, and 15 is a grip.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) The exposed part of the embedded metal part from the product is fitted and supported in the metal part receptacle provided at the bottom of the formwork, and a hole is formed that traverses this exposed part, and this hole is An embedded hardware fixing device for a concrete formwork, characterized in that a shaft is inserted into and removed from a bearing provided at the bottom of the formwork in a sandwiching manner. (2) An embedded metal fixture fixing device for concrete formwork, characterized in that an elastic cylinder is fitted into a hole passing through the exposed portion according to claim (1), and an insertion/extraction shaft is inserted into and inserted into the cylinder.