JPH046524B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention aligns reinforcing materials parallel to the side plates of the formwork with high positional accuracy within a formwork for producing ALC (autoclave-cured lightweight aerated concrete). The present invention relates to a method for fixing reinforcing materials for ALC in a fixed position. [Prior art] In general, ALC raw materials are injected into a formwork in which reinforcing materials are arranged, a semi-plastic concrete block is produced, which is then cut with piano wire and further cured at high temperature in an autoclave.
Manufactures ALC panels. This ALC panel is
Due to its high strength, light weight, heat insulation properties, and ease of construction, the market has expanded rapidly in recent years. The reinforcing material is added to increase the tensile strength of the ALC panel, which is weak because it is made of cement. This reinforcing material is aligned in the formwork during the ALC panel manufacturing process, before or after pouring raw materials into the formwork, 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. moreover
If reinforcement is not inserted at the specified location within the ALC panel, the calculated strength will not be achieved, which is a serious consequence. It is therefore important that, after the manufacture of a semi-plastic concrete block, the reinforcing material is precisely placed in the predetermined position within the block. Conventionally, as shown in FIG. 1, fixing jigs 2' are suspended from a plurality of setting frames 3, and the reinforcing material 1 is supported by the corresponding fixing jigs 2' of each setting frame 3. The reinforcing materials 1 were arranged in the formwork 18 by placing them across the formwork side plates 4. [Problems to be Solved by the Invention] Since the fixing jig 2' is suspended in the formwork 18, the reinforcing material is pushed by the injection pressure of the raw material and the foaming pressure of the foaming agent in the raw material. We were unable to avoid the problem of it moving from its fixed position within the formwork. Therefore, in order to fix 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. Additionally, from experience, it is possible to predict the movement of the reinforcing material due to raw material injection and foaming, and then 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 In this case, it becomes complicated to maintain the position of the reinforcing material, and the position of the reinforcing material within the product cannot be precisely controlled. [Object of the Invention] The present invention was made to solve the above-mentioned problems, and an object of the present invention is to enable the position of the reinforcing material in the formwork to be fixed with high accuracy regardless of the raw material injection pressure or foaming pressure. . [Means for Solving the Problems] The method for fixing the reinforcing material for ALC in a fixed position according to the present invention is such that when fixing the reinforcing material for ALC in position within the formwork, the reinforcing material for ALC is fixed in position in a formwork that is longer than reaching the bottom plate of the formwork, and A length-variable reinforcing material fixing jig, which has a restoring force that shortens its length by pressing it from the top and returns to its original length when the pushing pressure from the top is removed, is attached to the fixing jig on the formwork. The reinforcing material fixing jig is fixed to the tool mounting frame and the lower end of the reinforcing material fixing jig is pressed against the bottom plate of the formwork, and this configuration achieves the above object. [Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 2 to 4. FIG. 2 shows an outline of the apparatus for implementing the method of the present invention, in which 1 is a reinforcing material, 2 is a reinforcing material fixing jig, 3 is a fixing jig mounting frame, 4 is a side plate of the formwork 18, and 5 is a mold This is the bottom plate of the frame 18. The reinforcing material 1 is supported by a reinforcing material fixing jig 2, the reinforcing material fixing jig 2 is suspended by a fixing jig mounting frame 3, and the fixing jig mounting frame 3 is installed between the upper parts of the formwork side plates 4. ing. The reinforcing material fixing jig 2 is longer than the length from the fixing jig mounting frame 3 on the formwork 18 to the bottom plate 5 of the formwork,
In addition, the length is variable by having a restoring force that shortens the length by pressing from the top and returns to the original length when the pressing pressure from the top is removed. FIGS. 3 and 4 show an example of the reinforcing material fixing jig 2, and 6 in the figures is a cylindrical upper member. A handle 7 is fixed to the upper end of the upper member 6, and a screw hole 8 is bored therein. A stopper 9 is attached to the handle 7, and a spring receiving bolt 10 for adjusting the spring force is screwed into the screw hole 8. A hexagonal hole is provided at the tip of the bolt 10 for rotating the bolt 10 with a hexagonal wrench. Moreover, 11 is a cylindrical lower member. A spring guide 12 is fixed to the upper end of the lower member 11, and a fixed shaft 14 having a reinforcing member support fitting 13 is fixed to the lower end of the lower member 11. Furthermore, a long hole 15 is formed in the upper end of the lower member 11 along the longitudinal direction of the lower member 11. The upper end portion of the lower member 11 is slidably fitted into the upper member 6, and
A sliding pin 16 that engages with an elongated hole 15 provided in the lower member 11 is installed, and a compression spring 17 is interposed between the lower member 11 and the bolt 10 installed in the upper member 6 through the screw hole 8. has been done. Thus, the reinforcing material fixing jig 2 is automatically expanded by the compression spring 17 until the sliding pin 16 hits one end of the long hole 15, and the spring force is applied until the sliding pin 16 hits the other end of the long hole 15. The upper member 6 and the lower member 11 can be rotated as a unit. In the method of the present invention, when positionally fixing the reinforcing material 1 in the formwork 18, the reinforcing material fixing jig 2, which is attached to the fixing jig mounting frame 3 and comes into contact with the bottom plate 5 of the formwork 18, is pressed from above. to overcome the force of the compression spring 17 and shorten it, fit the upper member 6 into the fixing jig mounting frame 3, and engage the handle 7 provided on the upper member 6 with the stopper 9 on the fixing jig mounting frame 3. By stopping the reinforcing material fixing jig 2, the upper part is fixed to the fixing jig mounting frame 3 on the formwork 18, and the restoring force (force of the compression spring 17) that tries to return the reinforcing material fixing jig 2 to its original length It is characterized in that the lower end of the reinforcing material fixing jig 2 (the tip of the fixed shaft 14) is pressed against the bottom plate 5 of the formwork. The pressing force of the formwork 18 against the bottom plate 5 is achieved by adjusting the spring force by adjusting the length of the bolt 10 provided on the upper member 6, and its magnitude depends on the injection of raw materials,
10 per reinforcing material fixing jig to resist the force acting on the reinforcing material fixing jig 2 through the reinforcing material 1 during foaming.
Kg or more, and 25 kg per reinforcing material fixing jig so that the reinforcing material fixing jig 2 can be easily placed on the formwork 18.
It is preferable to set it to below Kg. Further, the tip of the reinforcing material fixing jig 2 may be pointed, but it is preferably formed into a plane perpendicular to the longitudinal direction of the jig in order to effectively prevent lateral displacement during injection of raw materials and foaming. In addition, as a method of fixing the reinforcing material fixing jig 2, an example has been described in which the upper member 6 is fitted into the fixing jig mounting frame 3 and the handle 7 provided on the upper member 6 is fixed with the fastener 9. For example, the upper end of the reinforcing material fixing jig 2 may be fitted and fixed in the fixing jig mounting frame 3 from the lateral direction. Insert the reinforcing material fixing jig 2 into the material 1, and inserting the reinforcing material fixing jig 2 into the material 1.
Although the example in which the reinforcing material 1 is supported by the reinforcing material support fitting 13 has been described, for example, the reinforcing material 1 may be supported by being hooked on the reinforcing material fixing jig 2.
Further, the restoring force of the reinforcing material fixing jig 2 is obtained by the compression spring 17 due to its low cost and ease of maintenance, but it may also be obtained by, for example, air pressure, oil pressure, repulsive force of the same magnetic poles of magnets, etc. Needless to say. [Effects of the Invention] As described above, the present invention shortens the reinforcing material fixing jig, which is attached to the fixing jig mounting frame on the formwork and comes into contact with the bottom plate of the formwork, by pressing from above. The upper part is fixed to the fixing jig mounting frame, and the restoring force of the reinforcing material fixing jig to return to its original length presses the lower end of the reinforcing material fixing jig against the bottom plate of the formwork, so that the reinforcing material is fixed. The work of arranging the reinforcing material within the formwork using the jig can be done easily and quickly.
In addition, the reinforcing material fixing jig is fixed in the formwork with both ends supported by the fixing jig mounting frame and the bottom plate of the formwork, so it can withstand the force received when the raw material is injected into the formwork and foamed. The reinforcing material can be reliably held in place within the formwork. Therefore, it is possible to improve the efficiency of the reinforcing material placement work within the formwork, and to ensure the strength and quality of the product by placing the reinforcing material in the center of the product with high precision.
Incidentally, in the present invention, when a spring clamp is attached to the lower end of the reinforcing material fixing jig and it is pulled horizontally, the tensile force at the moment when the lower end of the reinforcing material fixing jig starts to slide on the bottom plate of the formwork is 0.7 kg-f. When the force of the compression spring was adjusted so that the following was achieved, the accuracy of the dimension (cover) from the front surface of the product to the reinforcing material was greatly improved as shown in the following table. 【table】

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an apparatus for implementing the conventional method;
FIG. 2 is a schematic diagram showing an apparatus for carrying out the method of the present invention;
FIG. 3 is an enlarged sectional view taken along the line .about. in FIG. 2, and FIG. 4 is a front view showing a main part of the reinforcing material fixing jig in cross section. 1... Reinforcement material, 2, 2'... Reinforcement fixing jig,
3... Fixing jig mounting frame, 4... Side plate of formwork, 5...
...Bottom plate of formwork, 6...Top member, 7...Handle, 8...
...screw hole, 9...fastener, 10...bolt, 11
...Lower member, 13...Reinforcement support metal fitting, 14...
Fixed shaft, 15...Elongated hole, 16...Sliding pin, 17
... Compression spring, 18 ... Formwork.

Claims (1)

[Claims] 1 When fixing the reinforcing material for ALC in the formwork, it is longer than it reaches the bottom plate of the formwork, and its length is shortened by pressing it from the top, and when the pressing pressure from the top is removed, it returns to its original length. A reinforcing material fixing jig with variable length that has a restoring force that returns to its original position is fixed at its upper part to the fixing jig mounting frame on the formwork, and the lower end of the reinforcing material fixing jig is pressed against the bottom plate of the formwork. A method for fixing a reinforcing material for ALC in a fixed position.