JPH0353850Y2 - - Google Patents

Description

[Detailed explanation of the idea]

(Field of Industrial Application) The present invention relates to auxiliary parts used when molding lightweight aerated concrete. In particular, the present invention relates to a floor plate used as the bottom plate of a formwork for molding lightweight cellular concrete. (Prior art) Conventionally, in the production of lightweight aerated concrete products, reinforcing material that matches the length of the product is set in a formwork using a setting frame and setting rod, and mortar for lightweight aerated concrete is placed in this formwork. After injecting and foaming and hardening to form a hardened block, the hardened block is cut into the desired product dimensions with a piano wire mortar cutter, then main curing is performed in an autoclave, and then transported to the subsequent process on a roller conveyor. . (Problem to be solved by the present invention) However, in the conventional technology, the bottom plate of the formwork was flat, and there was no bottom plate on the bottom plate of the formwork as in the present invention, so the post-processing When the product was transported by a roller conveyor, the cut lower surface 8 of the lightweight aerated concrete product hit the roller conveyor 13, as shown in FIG. 8, and was likely to be damaged in that area. One purpose of the present invention is to provide an auxiliary part that can eliminate this defect, and a further purpose of the present invention is to provide an auxiliary part that can solve the purpose of eliminating the defect with as simple an operation as possible. . (Means for solving the problem) The present invention has a flat top surface, a thickness of 2 to 3 mm,
This is a bottom plate for a lightweight cellular concrete molding frame bottom plate, in which a magnet thinner than the depth of the recess is attached to a recess provided on the underside of a plate-shaped body with a width of 100 to 200 mm. There are 6 magnets per floor plate, the magnets are rare earth magnets, and the diameter of each magnet is 16 mm.
A magnet thinner than the depth of the recess is attached to the lower hollow recess, which is characterized in that the magnet is installed in the recess of the floorboard with an adhesive made of bisphenol epoxy mixed with iron powder and aluminum oxide powder. This is a bottom plate for the bottom plate of a lightweight aerated concrete molding frame. That is, one of the requirements of the present invention is that the bottom plate be a flat top surface, 2 to 3 mm thick, and 100 to 200 mm wide. That is, by laying this plate-shaped body on the bottom plate of the formwork, the disadvantage of the prior art in that the cut lower surface 8 of the lightweight aerated concrete product hits the roller conveyor 13, which tends to cause damage to that part, is eliminated. be done. For example, the fourth
As shown in Fig. 5 and Fig. 5, a mold with a thickness of 2 to 3 mm and a width of 2 to 3 mm is placed on the formwork bottom plate 5 at a position corresponding to the length of the lightweight aerated concrete product, that is, at the cutting position of the mortar block.
When laying a bed plate 2 of 100-200 mm and a length of 1530 mm (the length is the width of the formwork), a depression 7 will be formed on the lower surface of the cut end of the lightweight aerated concrete product, which will eliminate the above disadvantages. . That is, if the thickness and width of the plate-shaped body are outside the above range,
Although the occurrence of defects is slightly less than that of the conventional technology, chips still occur at the cut ends of lightweight cellular concrete products. In addition, if the bottom plate 2 to be laid on the formwork bottom plate is simply placed on the formwork bottom plate, when pouring the mortar for lightweight aerated concrete into the formwork, the mortar will flow along the bottom plate, causing The bottom plate 2 moves and is difficult to set at a desired position. Therefore, we first considered fixing the bottom plate 2 by pressing it from above using a setting rod 12 for setting the bottom plate, as shown in FIGS. 4 and 5. That is, as shown in the main part in FIG. 6, it is used for the purpose of setting the reinforcing material 9 into the formwork with a setting rod 10, and a setting frame rod 11 from which the setting rod 10 is suspended is provided with a setting rod for setting the bottom plate. Attach the set rod 12,
Using this setting rod 12 for setting the bottom plate, set the bottom plate 2.
At first I thought of fixing it from above. However, with this method of fixing the bottom plate 2, a large number of setting rods 12 are required to fix the bottom plate, and not only does setting the bottom plate 2 take a lot of effort, but the bottom plate 2 has a long product length. If this re-laying operation is repeated many times, the bottom plate may become deformed, and depending on the degree of deformation, a gap may appear between the bottom plate 2 and the bottom plate 5. The mortar sinks into the surface of the product, causing the bottom plate 2 to float or move, making the dent on the lower surface of the product larger than necessary, or making the dent in a different position from the desired position of the product. Furthermore,
Even with a new floor plate, it is necessary to remove the setting rod before cutting the mortar block, and there is also the disadvantage that the block bears marks from the setting rod. The present invention is capable of providing a bed plate that can easily make indentations in desired positions of lightweight cellular concrete blocks, and is a flat plate with a thickness of 2 to 3 mm and a width of 100 to 200 mm. The original purpose was achieved by creating a recess in the lower side and attaching a magnet thinner than the depth of the recess to the recess. (Example) The present invention will be described below using examples shown in FIGS. 1 to 3. FIG. 1 is a sectional view of an embodiment of the floor plate of the present invention, and FIG. 2 is a plan view showing the floor plate shown in FIG. 1 applied to a formwork for molding lightweight cellular concrete. FIG. 3 is a sectional view taken along the line A-A' in FIG. 2. As shown in FIG. 1, which is a sectional view of one embodiment, the bottom plate of the present invention has a flat top surface and a thickness of 2 to 3 mm.
A recess 3 is provided on the lower side of the plate-shaped body 2 with a width of 100 to 200 mm, and a magnet 4 thinner than the depth of the recess is placed in the recess 3.
This is the bottom plate 1 by attaching it. If the thickness of the magnet 4 is made equal to or greater than the thickness of the recess, the magnet will fall off or break when the bottom plate 1 is replaced at a desired position depending on the cutting length of the product. And since the top of the bottom plate of this invention is flat,
It is possible to form a sharp and desired depression on the lower surface of the cut mortar block. Now, this floor plate 1 is made of a steel bottom plate of a formwork for molding lightweight aerated concrete by the action of a magnet, as shown in the plan view in Fig. 2 and the cross-sectional view in Fig. 3.
It is set centered on position 8 where the mortar block is to be cut. The size and depth of the recesses 3 of the floorboard 1 of the present invention and the number of recesses 3 per floorboard are determined by the strength and size of the magnet used, but it is easy to reset the bedboard to a desired position, However, when molding lightweight aerated concrete, it is required that the slabs do not move, so the required suction force for each slab is approximately
It turned out to be 20Kg. On the other hand, it is preferable to provide the magnets in a dispersed manner so that the entire surface of the bottom plate comes into contact with the bottom plate, so it is preferable to increase the number of depressions per bottom plate and make the magnets smaller. In order to be able to fix with small magnets at many points in this way, it is preferable that the magnet has a large energy product and coercive force, and has no drawbacks in terms of workability and temperature stability in making it into a predetermined size.From this point of view, rare earth magnets are preferred. Magnets can preferably be used. It has also been found that it is most preferable to use six rare earth magnets with a diameter of 16 mm per floor plate. In particular, it is preferable that the thickness be about 1 mm; if it is too thick, the recess will need to be made deeper, the thickness of the bottom plate above the recess will become thinner, and the magnetic force will also become stronger, requiring more effort when peeling the bottom plate from the bottom plate. is required, which is not very desirable. Furthermore, if the magnet is made thinner and its diameter is increased, the magnet becomes more likely to break during repeated use, which is not desirable. In addition, this magnet can be fixed to a steel plate without the use of adhesive if the plate is made of steel, but even if it is used repeatedly, the plate is thin and cannot be easily removed, especially when the plate is removed from the bottom plate of the formwork. Although it is easy to bend, it is still preferable to fix the magnet so that it does not peel off from the floor plate. Methods for fixing this magnet to the floorboard include countersunk screws and adhesive tape, but the conditions for molding lightweight aerated concrete are that the temperature in contact with mortar is 80℃ or less.
Since the temperature will be 90°C, it is preferable to fix with adhesive. Adhesives that can be used include strong adhesives and epoxy adhesives, but as shown in Table 1, the adhesive strength and heat resistance at temperatures between 80°C and 90°C (in Table 1, they are simply referred to as heat resistance). ), durability against oil used as a mold release agent applied to the bottom plate of the formwork (indicated as oil resistance in Table 1), and the ability of the magnet not to crack during repeated use (indicated as magnet durability in Table 1). ), it is most preferable to attach magnets to the recesses of the floorboard using an adhesive made of bisphenol epoxy mixed with iron powder and aluminum oxide powder. Use of such an adhesive prevents the magnet from peeling off from the floor plate or chipping during repeated use, thereby extending the useful life of the magnet.

[Table] The floorboards used in the tests in Table 1 have a thickness of 2
It is a steel plate with a width of 150 mm and a length of 1530 mm, each with a depression depending on the thickness and diameter of the magnet used and the number of magnets used, and the depression is deeper than the thickness of each magnet used. did. Incidentally, high purity iron powder was used. (Effect of the invention) The top surface of this invention is flat, thickness is 2 to 3 mm, width is 100 to
By using a bottom plate with a magnet thinner than the depth of the hollow provided in the bottom of the 200 mm plate placed on the bottom plate of the lightweight aerated concrete molding form, it is possible to cut the cutting block. It is possible to form a dent in the same sharp shape as that of the floor plate on the cut lower surface of the block, which makes it difficult for the cut lightweight cellular concrete block to be damaged during movement. At the same time, the bottom plate of the present invention does not require any special equipment to be attached to the bottom plate of the formwork, and can be firmly fixed in the desired position.The position of the bottom plate does not move due to the injection mortar and is fixed to the bottom plate of the formwork. Nevertheless, even if it becomes necessary to change the cutting position of the block in order to manufacture products of different lengths, the bottom plate can be easily moved to the desired position.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of one embodiment of the bed plate of the present invention, and FIG. 2 is a plan view showing the state in which the bed plate shown in FIG. 1 is applied to a formwork for molding lightweight cellular concrete. FIG. 3 is a sectional view taken along the line A-A' in FIG. 2. Fig. 4 is a plan view showing a method of attaching the floor plate to the formwork other than the invention considered before arriving at the invention, and Fig. 5 is a cross-sectional view taken along line B-B' in Fig. 4. FIG. 6 is an enlarged sectional view of the part circled as A in FIG. 5. Furthermore, Fig. 7 is a side view showing the state in which lightweight aerated concrete mortar blocks manufactured using the floor plate of the present invention and cut into product lengths are transported on a roller conveyor, and Fig. 8 is a conventional FIG. 2 is a side view showing a state in which a lightweight cellular concrete mortar block manufactured without using a floor plate using technology and cut into product lengths is transported on a roller conveyor. 1 ... Bottom plate of the present invention, 2... Bottom plate, 3... Recess, 4... Magnet, 5... Bottom plate of formwork, 6... Side plate of formwork, 7... Indentation in mortar block, 8...
... Planned line for cutting the mortar block, 13...
Roller conveyor, 14...Cut mortar block.

Claims (1)

[Scope of claims for utility model registration] 1. The top surface is flat, the thickness is 2 to 3 mm, and the width is 100 mm to
A bottom plate for lightweight aerated concrete molding forms, in which a magnet thinner than the depth of the recess is attached to the recess provided on the underside of a 200 mm plate. 2. Six depressions were provided per floor plate, the magnets were rare earth magnets, each magnet had a diameter of 16 mm, and the magnets were made by mixing bisphenol epoxy with iron powder and aluminum oxide powder. A bed plate for a lightweight cellular concrete molding frame bottom plate according to claim 1, wherein the bottom plate is attached to the bottom plate of a lightweight foamed concrete molding frame with an adhesive.