JPS6245806B2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention arranges reinforcing materials parallel to the side plates of the formwork with high precision in a formwork for manufacturing ALC (autoclave-cured lightweight aerated concrete). This relates to an ALC reinforcement fixing device for.

(Problems of the prior art to be solved by the invention) In general, ALC raw materials are injected into a formwork in which reinforcing materials are arranged to produce semi-plastic concrete blocks, which are then cut with piano wire and then placed in an autoclave at high temperature. By taking care of yourself,
Manufactures ALC panels. The market for ALC panels has been rapidly expanding in recent years due to their high strength, light weight, insulation properties, and ease of construction. The reinforcing material is added to increase the tensile strength of this ALC panel, which is weak because it is made of cement. This reinforcing material is aligned in the formwork before or after pouring the raw materials into the formwork during the ALC panel manufacturing process, but if the reinforcing material is not aligned in the correct position in the mortar after hardening. When cutting mortar blocks, the reinforcing material hits the cutting blade and damages the cutting tool, and the reinforcing material is exposed on the surface of the ALC panel, damaging its appearance. Furthermore, ALC
If reinforcement is not inserted into the panel at the specified location, the calculated strength will not be achieved, which is a serious consequence. Therefore, it is important that after the semi-plastic concrete block is manufactured, it is accurately placed in a predetermined position within the block.

By the way, conventionally, as shown in FIG. 1, fixing jigs M' are suspended from a plurality of setting frames 13, reinforcing members 16 are supported by the corresponding fixing jigs M' of each setting frame 13, and the setting frames 13 are The reinforcing members 16 are arranged within the formwork 14 by placing the reinforcing members 13 across the formwork side plates 17, and the fixing jigs M' are also suspended within the formwork 14. Therefore, depending on the injection pressure of the raw material and the foaming pressure of the foaming agent in the raw material, the
6 was pressed and moved from its fixed position in the formwork.

Therefore, in order to secure the position of the reinforcing material when it is placed in the formwork, the thickness of the fixing jig is increased.
One possible method is to make a blind hole in the bottom plate of the form and insert the tip of the jig into it.

However, in this method, the diameter of the hole formed in the product increases when the jig is removed after manufacturing the semi-plastic concrete block, and the strength of the product decreases. In this method, the jig cannot be used unless the position of the jig is determined, and cleaning the hole and inserting the jig into the hole require a great deal of effort. Also, from experience, it is possible to predict the movement of the reinforcing material due to raw material injection and foaming, and to shift the position of the reinforcing material in advance so that it will be placed in a predetermined position according to the movement, but this method does not work. ,
Maintaining the position of the reinforcing material is complicated, and the position of the reinforcing material within the product cannot be precisely controlled.

(Object of the Invention) The present invention was devised to solve the above-mentioned conventional problems, and provides an ALC reinforcing material fixing jig that can press and fix the tip of the jig onto the bottom plate of a formwork with a predetermined spring force. The purpose is to

(Structure of the Invention) The ALC reinforcing material fixing jig of the present invention is composed of upper and lower members fitted together so as to be expandable and contractible, and includes a spring mechanism that presses the lower member against the upper member in the jig extension direction, and a spring mechanism of the mechanism. The lower end of the lower member has a built-in screw mechanism for adjusting the force, and is configured to be able to expand and contract so that the lower end of the lower member is longer or shorter than the length that reaches the bottom plate of the formwork when it is attached to a set frame and placed in the formwork. do.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 2 to 4. In the figure, 1 is a cylindrical upper member, and a handle 2 is fixedly attached to the upper end of the upper member 1. , and a screw hole 3 is provided. A stopper 4 is attached to the handle 2, and a spring receiving bolt 5 is screwed into the screw hole 3 to adjust the pressing force of the spring.
Further, a hexagonal hole is provided at the tip of the bolt 5 for rotating the bolt 5 with a hexagonal nut. Reference numeral 6 denotes a cylindrical lower member, and a spring guide 7 and a fixed shaft 9 having a reinforcing member support fitting 8 are fixed to the upper and lower ends of the lower member 6. Furthermore, a long hole 10 is formed in the upper end of the lower member 6 along the longitudinal direction of the lower member 6. The upper end portion of the lower member 6 is slidably fitted into the upper member 1, and the lower member 6 is fitted into the upper member 1.
A sliding pin 11 that engages with a long hole 10 provided in the upper member 1 is attached, and a compression spring 12 is interposed between the bolt 5 attached to the upper member 1 through the screw hole 3 and the lower member 6. There is. In this way, the compression spring 12 automatically extends the long hole 10 until the sliding pin 11 hits one end of the long hole 10, and resists the spring force and shortens the long hole 10 until the sliding pin 11 hits the other end. ,
The upper and lower members 1 and 6 are configured to be able to rotate together. As described later, when the fixing jig M is placed in the formwork 14 via the setting frame 13, the lower end of the jig (the tip of the fixing shaft 9) is moved by the force of the compression spring 12. The length is long enough to come into pressure contact with the formwork bottom plate 15.

(Function) After inserting the fixing jig M from above into a support fitting (not shown) provided on the reinforcing member 16 through a mounting hole (not shown) provided on the set frame 13, the handle 2 of the fixing jig M is inserted. When the reinforcing member 16 is rotated 90 degrees and fixed to the setting frame 13 by the fastener 4, and then the setting frame 13 is lifted by an overhead crane (not shown), the reinforcing member 16 is attached to the fixing jig M suspended on the setting frame 13.
The lower member 6 is suspended via a reinforcing member support fitting 8 provided at the lower end thereof. When the setting frame 13 is lowered to straddle the formwork side walls 17, the lower end of the fixing jig M hits the formwork bottom plate 15, so the setting frame 13 can be pushed down while effectively utilizing the weight of the setting frame 13. Then, with the fixing jig M shortened, set frame 13
When placed across the formwork side plates 17, the compression spring 12 built into the fixing jig M is compressed and held, and the spring force causes the lower end of the fixing jig M (the tip of the fixed shaft 9) to come into surface contact with the formwork bottom plate 15. They are pressed together and fixed by the frictional force generated between them. If the frictional force is adjusted by the screw mechanisms 3 and 5, the inside of the formwork 14
Since the fixing jig M does not move due to the pressure received when the ALC raw material is injected and foamed, the reinforcing material 16 is reliably held at a fixed position within the formwork 14 by the fixing jig M.

After manufacturing the semi-plastic concrete block, when the handle 2 of the fixing jig M is removed from the setting frame 13, the upper member 1 is lifted up from the setting frame 13 by the compression spring 12, and the force of the compression spring 12 is released. Next, when the handle 2 is rotated 90 degrees and the setting frame 13 is removed from the formwork 14 and lifted up, the reinforcing material supporting metal fittings 8 do not catch on the reinforcing material 16, and the fixing jig M
This allows the semi-plastic concrete block to be demolded and sent to the next cutting process.

Note that the spring mechanism that presses the lower member 6 in the jig extension direction is not built into the upper end of the jig, but instead is replaced with the upper and lower members 1 and 6, as shown in FIG. It may be built into the lower end of the jig using the upper and lower members 1A and 6A. In addition, the screw mechanism for adjusting the spring force of the spring mechanism is attached to the screw hole 3 at the upper end of the upper member 1.
and a spring receiving bolt 5 that supports the upper end of the compression spring 12. For example, as shown in FIG. Upper member 1A
It may be screwed into a screw hole provided at the upper end of the holder. Furthermore, a long hole is provided in order to prevent rotation of the lower member 6 with respect to the upper member 1 so that the reinforcing material support metal fitting 8 provided on the lower member 6 can be rotated from the top of the jig while ensuring the elasticity of the fixing metal fitting M. 10 and a sliding pin 11 were used, but for example, as shown in FIG.
A may be provided with a sliding groove 18 along its longitudinal direction, a retainer 19 may be provided at the lower end of the groove 18, and an engaging protrusion 20 that engages with the sliding groove 18 may be provided on the lower member 6A. However, if the reinforcing member support fitting 8 is provided on the upper member 1A, the lower member rotation prevention mechanism as described above is not required.

In addition, various other applications are possible without departing from the gist of the present invention.

(Effects of the Invention) As described above, the present invention has a configuration that can be pressed and fixed to the bottom plate of the form so that both ends are supported when placed in the form, and that the fixing force can be adjusted as appropriate by adjusting the pressing force. , the reinforcing material can be reliably held in position within the formwork against the force received when the ALC raw material is injected and foamed. Therefore, it is possible to ensure that the reinforcing material is accurately placed in the center of the product, the quality of the product can be ensured, and post-processing can be eliminated.
By making the thickness of the jig the same as before, it is not necessary to increase the diameter of the hole formed in the product by removing the jig, and the strength of the product can also be ensured. In addition, since it is easy to use and remove after use, there is no need to significantly reduce work efficiency compared to conventional methods, and considering that there is no need for post-processing after manufacturing the product, it actually improves manufacturing efficiency. can be improved. Furthermore, since it has a simple configuration with a small number of parts, the jig itself can be manufactured cheaply and efficiently.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing how a conventional fixing jig is used, Fig. 2 is a front view showing an example of the fixing jig of the present invention with main parts in cross section, and Fig. 3 is a diagram showing how the fixing jig is used. FIG. 4 is a schematic diagram showing the situation, FIG. 4 is a sectional view taken along the line - - in FIG. 3, and FIG. 5 is a schematic diagram showing another example of the fixing jig of the present invention. 1, 1A... Upper member, 2... Handle, 3, 3A... Adjustment nut, 4... Fastener, 5... Spring receiver bolt, 5A
... Spring holder, 6, 6A... Lower member, 7... Spring guide, 8... Reinforcement support metal fitting, 9... Fixed shaft, 10... Elongated hole, 11... Pin, 12... Compression spring, 13... Set frame, 14... Mold Frame, 15... Formwork bottom plate, M, M'... Fixing jig, 16... Reinforcement material, 17... Formwork side plate, 18...
Sliding groove, 19... Retainer, 20... Engaging protrusion.

Claims (1)

[Claims] 1 Consists of upper and lower members that are fitted together so that they can expand and contract, and the upper member has a built-in spring mechanism that presses the lower member in the jig extension direction and a screw mechanism that adjusts the spring force of the mechanism, and is attached to the set frame. 1. An ALC reinforcing material fixing jig, characterized in that the lower end of the lower member is configured to be expandable and retractable to be longer or shorter than the length reaching the bottom plate of the formwork when placed in the formwork.