JPH0739091B2 - Mortar block cutting method and cutting device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a mortar block cutting method and a cutting device when a mortar is injected into a mold to produce a foam concrete product or the like.

[Prior art]

Conventionally, in order to vertically cut the mortar block that has been injected into the mold and has become a semi-cured state, the molded mortar block is detached from the mold bottom plate and transferred to another block cutting machine, There is a method of cutting by moving the cutting line set in the lower part thereof upward. This method requires increasing the mortar hardness in order to transfer the mortar block, and additionally requires a mortar cutter with high equipment cost.

[Object of the Invention]

The present invention has been made in view of the above circumstances. It is an object of the present invention to propose a mortar block cutting method and a mortar block cutting device which are not restricted in a specific place for cutting and molding the mortar block, have high productivity and cutting accuracy, and have a low equipment cost.

[Structure of Invention]

The cutting method of this mortar block is that a mold is composed of a mold bottom plate and an integral side plate arranged on it, and a cutting line is stretched along the lower surface of the side plate, and the mold is poured into the mold. The hardened mortar block is characterized in that the side plate is pulled up along a guide rod projecting from the bottom plate of the frame to be cut in the vertical direction. A cutting device according to another invention is a guide for stretching a cutting line along a lower surface of a side plate of a form frame composed of a form bottom plate portion and an integral side plate arranged thereon, and guiding the upward pulling up of the side plate. It is characterized in that the rod is provided so as to project on the bottom plate portion of the formwork along the outer surface of the side plate.

The mold bottom plate portion in the present invention includes a mold bottom plate portion including a mold bottom plate or a frame supporting the mold bottom plate, or a platform or a carriage on which the mold frame is mounted.

1 and 2 show the cutting device of the embodiment. This device forms a mold by arranging an integral side surface 5 formed by integrally fixing four side plates 3 and 4 on the upper surface of a rectangular mold bottom plate 2 placed horizontally on a stand 1 or a trolley to face each other. The two long-side side plates 3 are divided into three equal parts, and the cutting lines 6, 6 are stretched along the lower surface of the integral side plate by holding both ends with holders 7, 7. A concave groove 8 having an arc cross section along the vertical direction is provided on the central outer surface of the two opposing short side plates 4 of the integrated side plate 5, and the concave groove 8 is fitted to the position facing the concave groove 8 of the base 1. Vertical guide rods 9 with a circular cross-section are provided so as to project.

This cutting device is a semi-cured mortar block 10 in which mortar is injected into a mold surrounded by an integral side plate 5 on a bottom plate 2.
As shown in FIG. 2, the inner side plate 5 is pulled up vertically with the inner surface of the concave groove 8 along with the guide rods 9 and 9 to remove the mold, and the block 10 is vertically moved by the cutting lines 6 and 6. Cut and cut into 3 block pieces 10 '.

As shown in FIG. 3, a reinforcing member 11 having an H-shaped cross section is fixedly integrated on the outer surface of the long side plates 3, 3 and two packings 12a, 12b are attached in parallel on the lower surface thereof. To pull up the integral side plate 5, the outer lower edge of the long side 3 or 3, that is, the reinforcing material 11
The gripper claws 13 and 13 are hooked at the position of the lower surface packing 12b of the above, and lifted by a crane.

In FIGS. 3 and 4, a plate 14 is fixed along the length of the outer surface of the H-shaped steel 11, and a spacer 15 is fixed to the lower end of the holder 7 and the groove of the spacer is formed on the plate. It is slidably fitted in 14, and the fixing bolt 16 is tightened and fixed at a desired position. A desired tension is applied to the cutting line 6 by a spring 17 in a holder 7, an end is gripped by a nipple 18, and the cutting line 6 is bent and stretched with a curvature at a lower edge of the packing 12b.

The guide rods of this cutting device are opposed to each other as shown in the above drawing.
It is convenient to provide the groove at the position of the groove provided on the short side plate, but the invention is not limited to this. You may provide 2-8 pieces.
It is necessary that the guide rod 9 be longer than the height of the integrated side plate so that the integrated side plate can be accurately guided until the lower surface of the integrated side plate 5, that is, the cutting line 6 is separated from the upper surface of the mortar block 10. . The tip of the guide rod 9 may be rounded so that it can be easily inserted into the groove 8 when the integrated side plate 5 is installed on the form bottom plate 2. The shape may be a polygonal shape or an elliptical shape in addition to a circular cross section, and a means such as a pinion or roller may be attached to the plate or rod to reduce friction with the integrated side plate. As shown in FIG. 5, the guide rod 9 can be inserted into and removed from the insertion hole 19 provided in the base 1, the carriage or the bottom plate so as to be detachable, and may be attached / detached or selectively used according to working conditions. . The cutting line of this cutting device is 0.3-2 mm.
φ piano wire is preferred.

In this cutting method and device, as a means for easily removing the mold and indirectly improving the cutting accuracy, at least three side plates of the integrated side plate are formed with a taper, and a release agent such as mineral oil is attached to the surface of the integrated side plate. It is necessary to apply the coating, and it is preferable to expand the opposing long side plates at the time of demolding to form a gap of several millimeters between the block and the long side plates and demold.

To lift the integrated side plate upward, use a crane or other toothpicker. For example, it is a crane or the like equipped with a gripper having an opening / closing mechanism, which is suspended from four points by a wire. If the difference in height between the tips of the grippers that lock the integrated side plate is 10 mm or less, it can be used for this purpose. Also, it is preferable that the crane is based on a cylinder rather than a wire.

〔Example〕

The side plates on the four sides are 1-5 °, and along the lower surface of the integrated side plate, the holder is fixed as shown in Fig. 4 and the cutting line is stretched, and a release agent mainly composed of mineral oil is applied to the inner surface of the side plate. After coating, it was placed on the bottom plate to form a mold. A packing 12a for preventing leakage of mortar on the lower surface of the integrated side plate 5 shown in FIG. 3 and a packing 12b serving as a pressure receiving portion of the gripper claw 13 are provided.
Was attached, and the packing 12b was made an elastic body harder than 12a.

Three rebar cages were placed evenly across the cutting line in this form, and 70 parts by weight of water and 100 parts by weight of solid content were poured into the mortar slurry for lightweight aerated concrete (ALC).
When this mortar foams and is semi-hardened,
As shown in the figure, an integral side plate was lifted in the vertical direction by a crane having four gripper claws and guided by attaching a groove on the side plate to the guide rod, and at the same time, the mortar block was cut into three pieces in the vertical direction.

The accuracy of the cutting position was small with respect to the set value, and the cutting accuracy was good.

〔The invention's effect〕

The present invention is as described above. In this cutting method and device, an integral side plate disposed on a bottom plate is pulled up along with a guide rod having an outer side surface protruding, and is cut simultaneously with demolding. Therefore, a special device is not required for pulling up and cutting, and a mortar block can be cut with high accuracy in the vertical direction by simply pulling up using a toothpicker such as a crane. Further, the equipment cost is low, and the work position is not restricted.

[Brief description of drawings]

1 and 2 are perspective views of the cutting device of the embodiment and the cutting device in a state in which the mortar block is cut, FIG. 3 is a longitudinal sectional view of the cutting device, and FIG. 4 is a holder portion for gripping a cutting line. FIG. 5 is a partial perspective view showing a modification of the guide rod. 1 ... Stand, 2 ... Bottom plate, 3 ... Long side plate, 4 ... Short side plate, 5 ... Integrated side plate, 6 ... Cutting line, 7 ... Holder,
8: groove, 9: guide rod, 10: mortar block,
10 '…… Mortar block piece, 11 …… H-shaped reinforcing material, 12a,
12b ... Patchin, 13 ... Clipper claw, 14 ... Plate, 15 ... Spacer, 16 ... Set bolt, 17 ... Spring, 18 ... Nipple, 19 ... Insertion hole.

Claims (2)

[Claims] 1. A mortar which is a semi-hardened mortar which comprises a bottom plate of a mold and a side plate integrally formed on the bottom of the mold to form a mold, and a cutting line is stretched along the lower surface of the side plate and poured into the mold. A method of cutting a mortar block, characterized in that the side plate is pulled up along a guide rod projecting from the bottom plate of the formwork and cut in the vertical direction. 2. A guide rod that extends along a lower surface of a side plate of a form frame composed of a form bottom plate portion and an integral side plate disposed on the form line and guides a guide rod for guiding upward pulling of the side plate. The mortar block cutting device is characterized in that it is provided on the bottom plate of the formwork along the ridge.