JPH0744691U - Form holding device for concrete block molding - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] In order to form a concrete block with no burrs on the pressing surface, a vertical vibration is applied to the formwork. [Structure] A mold 1 surrounded by side plates is vibratably held by four enclosures having upper and lower openings, and a movable iron plate 2 is brought into contact with the lower part of the frame plate and vibrates with respect to the mold 1. In a north ramp concrete block molding apparatus comprising a vibrating means (13) for giving a pressure and a pressure plate (9) pressurizingly formed in the upper opening of the mold, the mold (1) and the frame (10) are stepped at a mounting position. And a leaf spring piece 12 having a step at the step mounting position.
The tip end of each was fixedly held to the mold 1 and the frame 10 on the opposite side of the mold.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mold holding device at the time of molding a concrete block for molding a concrete block which is free of burrs on a pressing surface.

[0002]

[Prior art]

 Conventionally, in order to mold a concrete block with North Ramp concrete, while pressing with a pressing plate, at the same time, to increase the density of concrete inside, the mold for vibration is vibrated. Pressing the north ramp concrete in the mold with a pressing plate that has a shape that is almost the same as the shape of the inner peripheral part of the mold, and at that time, when the mold vibrates, lateral vibration is applied to the pressing plate and the mold. There is a tendency for burr to form on the upper four laps of the concrete block from a slight gap between the inner rim and the inner circumference. Therefore, in order to prevent burrs from occurring, guide plates should be provided at the four corners on the outside of the form to prevent lateral vibration when the form is vibrated, or vertical bushes should be attached to the outer holding plate of the form. The bushes are provided and the guide pins slide in the bushes to prevent horizontal vibration of the mold.

[0003]

[Problems to be solved by the device]

 In such a conventional mold holding device for concrete block molding, when a guide plate or guide pin is provided with a guide to prevent lateral vibration and force vertical vibration, a guide plate, It is inevitable that the bushes, guide pins, etc. will wear out early due to vibration of the mold, which has a comparatively heavy weight, and gradually vibrate laterally. Once the guide plate, the bush, the guide pin, or the like is worn, burrs are easily formed on the outer peripheral upper surface of the pressing surface of the concrete block. Further, since such a complicated and time-consuming work of exchanging the guide plate, the bush or the guide pin is a big obstacle to efficient concrete block molding. Moreover, in some cases, the mold itself is also worn, and the mold cannot be used for a long period of time. The present invention has been made in view of the above problems of the conventional technology. The purpose of the present invention is to reliably prevent horizontal vibration without damaging the formwork and to prevent vertical vibration. The object is to provide a mold holding device for concrete block molding, which is designed to obtain the above vibration.

[0004]

[Means for solving problems]

 In order to achieve the above-mentioned object, a frame surrounded by a wall body is surrounded by a frame, and a movable frame is brought into contact with the lower part of the frame plate so that a frame surrounded by walls is swingably held. In addition, in the north lamp concrete block molding apparatus, which is provided with a vibrating means for giving vibration to the formwork and pressurizing plate is pressurized in the upper opening of the formwork, the formwork and frame are And are fixedly held on the mold and the frame, respectively, on the opposite side of the mold by the tip of the leaf spring having a step at the mounting position. In the case where there is a relatively small step between the frame (fixed part) and the mold, the stepped leaf spring can be a V-shaped leaf spring. If there is a relatively large step between the frame (fixed part) and the form, the stepped leaf spring can be a U-shaped leaf spring.

[0005]

[Action]

 By holding a V-shaped or U-shaped holding plate panel between the frame (fixed part) having a step and the mold on opposite sides of the frame (fixed part) and the mold, respectively Among the vibrations given to the table, it is possible to prevent horizontal vibrations and to give only vertical vibrations to the form or the holding table.

[0006]

【Example】

 Examples will be described with reference to the drawings. 1 to 5, a holding table 3 for holding an iron plate 2 supporting the formwork 1 below is suspended by a holding rod 4. The mold 1 placed on the iron plate 2 is composed only of a side plate 5 having a predetermined shape, and an inner space 6 thereof is filled with a green concrete 7 made of north ramp concrete from above. Here, north lump concrete is also called cemented brick concrete, and is a dry concrete with a slump value of zero. Prestressed hollow concrete panels, hollow concrete blocks, etc. that are commonly used in the production of concrete products that are strongly compacted using vibration and pressure and then immediately demolded and cured. is there.

Pressure is applied from above the filled fresh concrete 7 by a pressure plate 9 suspended by a support shaft 15 fixed to a weight plate 8. The outer shape of the pressure plate 9 is a shape corresponding to the shape of the inner peripheral portion of the mold 1, and is made slightly smaller than the shape of the inner peripheral portion of the mold 1, so that the pressure plate 9 is loosely inserted into the mold 1. I am trying to get it. The weighting plate 8 is designed to be lifted upward together with the pressing plate 9 when the pressure is released, and the holding table 3 suspended by the holding rod 4 is also moved downward. Between the fixed frame 10 and the ear piece 11 provided integrally with the mold 1, in the state of the side surface as shown in FIG. 1, fixed to the respective attachment pieces of the V-shaped leaf spring piece 12 which is relatively wide. I am doing it. It is desirable that the V-shaped leaf spring piece 12 is attached to the opposite side of the form. That is, for example, when a rectangular concrete block is molded, it is desirable to provide it on each side facing each other as shown in FIG. 5, that is, on at least four places. Reference numeral 13 is a vibrator provided on the mold 1. Vibration is mechanically and electrically applied to the vibrating body 13. The vibrating body 13 may be attached to the lower portion of the holding table 3 in some cases.

North lamp concrete 7 is filled in the inside of the mold 1, and the vibrator 13 vibrates the mold 1, and at the same time, the pressure plate 9 pressurizes the north lamp concrete 7 from above. By doing so, it is compacted. At that time, a V-shaped leaf spring piece 12 is provided on the opposite side of the mold 1 to prevent horizontal vibration and to force vertical vibration, and after further strong compaction, hold it. When the table 3 is moved down, the concrete block 14 which is strongly compacted on the iron plate 2 is demolded. The demolded concrete block 14 is cured and solidified by a conventional method.

In FIGS. 6 to 7, in view of further design, when a large step is formed between the fixed frame 20 and the ear piece 22 integrally provided on the mold 21, the comparison as shown in FIG. Since the U-shaped leaf spring 23 having a wide width is easily attached without any trouble, almost the same vertical vibration as that of the V-shaped leaf spring piece 12 can be obtained.

[0010]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. In the mold holding device at the time of molding a concrete block according to claim 1, a mold surrounded by a wall body vibratably holds a square surrounded by an upper part and a lower part, and is movable to a lower part of the frame plate. In the north ramp concrete block molding apparatus, which comprises a vibrating means for abutting an iron plate and for vibrating the mold, and pressurizing a pressure plate at the upper opening of the mold, Since the frame and the frame have a step at the mounting position and the tip of the leaf spring having the step at the step mounting position is fixedly held to the frame on the opposite side of the mold, vibration applied to the frame Since all can be made to vibrate in the vertical direction, the north ramp concrete block can be reliably compacted, and the north ramp concrete block can be The outer peripheral surface eliminates the occurrence of burrs can a child mass-products that are standardized. Moreover, even if it is necessary to replace the leaf spring having a step that gives longitudinal vibration to the mold, it can be replaced quickly, reliably and inexpensively. In the frame holding device for molding a concrete block according to claim 2, since the leaf spring having the step is a V-shaped leaf spring, the step at the mounting position of the frame and the frame is relatively small. The V-shaped leaf spring can be effectively used to surely give vertical vibration to the mold. In the frame holding device at the time of molding the concrete block according to claim 3, since the leaf spring having the step is a U-shaped leaf spring, if the step at the mounting position of the die and the frame is relatively large, U By using a letter-shaped leaf spring, it is possible to appropriately cope with a large step.

[Brief description of drawings]

FIG. 1 is a sectional view showing a usage state.

FIG. 2 is a sectional view showing a demolded state.

FIG. 3 is an enlarged cross-sectional view showing a mounting state of a V-shaped leaf spring.

FIG. 4 is a perspective view of a V-shaped leaf spring piece.

FIG. 5 is a plan view showing a leaf spring attachment state.

FIG. 6 is a perspective view of a U-shaped leaf spring.

FIG. 7 is an enlarged cross-sectional view showing a mounted state of a U-shaped leaf spring.

[Explanation of symbols]

 1. ． Form 2. ． Iron plate 3. ． Holding stand 4. ． Holding rod 5. ． Side plate 6. ． Internal void space 7. ． Raw concrete 8. ． Weighting plate 9. ． Pressure plate 10. Fixed frame 11. Ear piece 12. V-shaped leaf spring piece 13. Vibrating body 14. Concrete block 15. Spindle 20. Fixed frame 21. Form 22. Ear piece 23. U-shaped leaf spring

Claims (3)

[Scope of utility model registration request] 1. A form surrounded by wall bodies is oscillatably held by a box surrounded by upper and lower parts, and a movable iron plate is brought into contact with the lower part of the frame plate and vibrates with respect to the form frame. In a north ramp concrete block molding apparatus comprising a vibrating means for giving and pressurizing a pressure plate in the upper opening of this mold, a step is provided at the mounting position of the mold and the frame, A mold holding device at the time of molding a concrete block, characterized in that the tip end of a leaf spring having a step at the step mounting position is fixedly held to the mold and the frame on the opposite side of the mold. 2. The frame holding device at the time of molding a concrete block according to claim 1, wherein the leaf spring having the step is a V-shaped leaf spring. 3. The mold holding device for molding a concrete block according to claim 1, wherein the leaf spring having the step is a U-shaped leaf spring.