JPH072010U - Formwork for concrete block molding - Google Patents

Abstract

(57) [Abstract] [Purpose] Like a large L-shaped retaining wall block molding form,
In a concrete block molding formwork having a lid plate that forms a surface that faces upward during molding, and a lift device that raises the lid plate when demolding, in addition to simplifying the support structure of the lid plate, The burden on the operator when raising and lowering 7 is reduced, and the opening and closing of the formwork can be performed more quickly. [Structure] A cover plate 7 for forming an upward facing surface at the time of forming a concrete block is attached to a movable frame 18 which is movable sideways via a lift device, and the cover plate 7 is lifted when the block is removed from the mold. In the concrete block molding frame for removing the block from the block, the movable frame 18 is moved to move the cover plate 7 sideways from the upper side of the block and the spring is used as the lift device. 26 is used.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a support structure for a concrete block molding frame having a cover plate for molding a block surface facing upwards during molding, such as a large L-shaped retaining wall block molding frame. It is a thing.

[0002]

[Prior art]

 The lid plate that forms the upward facing surface of the concrete block during molding must be retracted from above the block when demolding. As one of the means, a lid plate is attached to a moving frame that can be retracted to the side of the form via a lift device, and when removing the mold, after slightly lifting the lid plate, the moving frame is placed sideways. It is known that the molds can be demolded by evacuating the mold.

FIG. 6 shows an example of a large L-shaped retaining wall block forming frame having the cover plate 7 having the above-mentioned structure, which is disclosed in Japanese Utility Model Laid-Open No. 3-57008. This formwork is provided on the machine frame 11 with a fixed face plate 4 formed in an L shape when viewed from the side by a bottom plate 2 and a vertical plate 3, and a fore edge plate 5 is provided at the tip edge of the bottom plate 2. It is erected. A guide rail 13 is formed on the cross beam member 12 of the machine frame 11, and a side plate 6 having an L-shaped side face is attached to a carriage 16 having wheels 14 rolling along the guide rail. The side plate 6 is fastened to the side edges of the edge plate 5 and the fixed face plate 4 at the time of block molding, and moves outward along the guide rail 13 at the time of demolding. The side plate 6 has a U-shaped cross section, and a horizontal lower side of the side plate 6 is a moving rail 17, and a gate-shaped moving frame 18 having wheels 19 rolling along the moving rail 17 is provided. . The moving frame shown in FIG. 6 is composed of a lower frame 18b and an upper frame 18a attached to the lower frame via a lifting device, and a cover plate 7 is fixed to the upper frame 18a. On the other hand, a fixed rail 20 fixed on the machine frame 11 is provided outside the edge plate 5, and the fixed rail 20 is located on an extension of the moving rail 17 when the side plate 6 is fastened to the fixed face plate 4. There is.

A block forming operation using the mold of FIG. 6 is performed as follows. After assembling the formwork as shown in FIG. 6, concrete is poured into the upper opening 8 formed between the vertical plate 3 and the lid plate 7 and the bottom plate 2 of the portion 9 not covered by the lid plate 7 to open it. The concrete surface of the parts 8 and 9 that have been marked is troweled and then solidified. At the time of demolding, the lid plate 7 is slightly lifted by the lift device provided on the moving frame 18, then the moving frame 18 is moved from the moving rail 17 to the fixed rail 20, and the lid plate 7 is self-supporting on the fixed rail 20. Hold in the state. Next, the side plate 6 is opened to the outside and the block is lifted by a crane or the like to remove the mold. When the mold release is completed, the free-standing cover plate 7 and the open side plate 6 are cleaned, a mold release material is applied, and the mold frame is assembled for the next mold in the reverse order of the above.

Since the lid plate 7 and the side plate 6 of the formwork are held on the fixed rails 20 and the guide rails 13 in a self-supporting state, cleaning of the entire formwork and application of the release material can be performed safely. It has the feature that it can be done and the mold assembling work can be performed easily and quickly.

[0006]

[Problems to be solved by the device]

 The formwork having the cover plate 7 having the structure shown in FIG. 6 requires a lift device for moving the cover plate 7 upward on the moving frame 18. Conventionally, a cam mechanism and a screw mechanism have been used as this lift device, but there are problems that the mounting structure of the cover plate 7 becomes complicated and that the burden on the operator when moving the cover plate 7 up and down is heavy.

In view of this, the present invention simplifies the support structure of the cover plate in the mold having the above-described structure, reduces the burden on the operator during mold assembly and mold opening, and opens and closes the mold. The challenge is to obtain a mold for concrete block molding that can be done more quickly.

[0008]

[Means for Solving the Problems]

 In the concrete block molding form according to the present invention, a lid plate 7 for molding the surface of the concrete block facing upward during molding is attached to a movable frame 18 which is movable sideways via a lifting device, After removing the mold, the cover plate 7 is lifted up by a lift device, and then the moving frame 18 is moved to retract the cover plate 7 from the upper side of the block to the side to remove the block from the concrete block. In the formwork, a spring 26 is used as the lift device.

[0009]

[Action]

 The cover plate 7 is constantly biased upward by a spring 26 with respect to the moving frame 18. By fastening the lid plate 7 and the side plate 6 with the fastener 28 at the time of mold assembly, the lid plate 7 and the side plate 6 are fastened with the spring 26 deformed (usually compressed). Since the lift amount of the cover plate 7 required for demolding is small, if a fastener using a toggle mechanism is used as the fastener 28, a large boosting force will resist the biasing force of the spring 26. It is possible to fasten the lid plate 7 and the side plate 6 with one touch.

When the mold 28 is released from the mold, by opening the fastener 28, the lid plate 7 is lifted by the urging force of the spring 26, and a gap is formed between the upper surface of the molded concrete block and the lid plate 7. Therefore, the movable frame 18 can be moved as it is to retract the lid plate 7 from above the block, and the mold can be opened and closed faster than that using a screw device or a cam device as a lift device.

[0011]

【Example】

 1 to 5 show an embodiment of the present invention, in which the structure of the present invention is adopted as a support structure of a cover plate 7 of a block forming frame for an L-shaped retaining wall similar to FIG. is there. In the formwork of this embodiment, a moving rail 17 for guiding the moving frame 18 is fixed to the machine frame 11. The moving rail 17 is extended to the outside of the fore edge plate 5 of the formwork, and the side plate 6 is moved to the moving rail 17. It is located above. The movable frame 18 is formed in a low gate shape above a carriage 21 that moves along a movable rail 17, and vertical guide holes 23 are provided at four positions on an upper member 22 of the movable frame 18. A compression coil spring 26 is interposed between a spring receiver 25 screwed onto the upper end of a lifting rod 24 freely inserted and the upper surface of the upper member 22. The lower end of the lifting rod 24 is fixed to a square pipe 27 fixed to the back surface of the cover plate 7.

Between the outer surface of the cover plate 7 and the outer surface of the side plate 6, there are provided toggle-type clamps 28 having a structure shown in FIG. 7 and the side plate 6 are fastened.

When the clamp tool 28 is fastened, the lid plate 7 is pulled down by a large boosting action of the clamp tool 28, and the lid plate 7 and the side plate 6 are fastened with the spring 26 compressed. After the concrete block is molded in this state, if the clamp tool 28 is opened at the time of demolding, the cover plate 7 moves upward due to the urging force of the spring 26, and the space between the lower surface of the cover plate 7 and the formed block is increased. Since there is a play in, the moving frame 18 is moved to the right in FIG. 1, the lid plate 7 is retracted to the outside of the edge plate 5, then the side plate 6 is opened, and the molded concrete block is opened by a crane or the like. Lift and remove from the mold.

[0014]

[Effect of device]

 According to the present invention described above, the processing operation of the lid plate at the time of mold assembly is automatically performed in conjunction with the fastening operation of the fastener, and the upward movement operation of the lid plate at the time of mold opening is provided with a belt. Since it occurs simultaneously with the opening of the fastener due to the force, no special operation is required to move the lid plate up and down, thus reducing the work load during mold assembly and mold opening, and opening and closing the mold in a shorter time. Can be done at. Further, as in the structure shown in the embodiment in the figure, by adopting a structure in which the cover plate is hung on a lifting rod biased upward by a spring, there is an effect that the support structure of the cover plate can be simplified.

[Brief description of drawings]

FIG. 1 is a side view schematically showing an embodiment.

FIG. 2 is a front view of the embodiment.

FIG. 3 is a sectional view of a spring mounting portion.

FIG. 4 is a perspective view schematically showing a moving frame and a part of a cover plate.

FIG. 5 is a perspective view showing an example of a fastener.

FIG. 6 is a perspective view showing an example of a conventional formwork.

[Explanation of symbols]

 7 Lid plate 18 Moving frame 26 Compression coil spring 28 Clamping tool

Claims (1)

[Scope of utility model registration request] 1. A cover plate (7) for forming an upward-facing surface during molding of a concrete block is attached to a laterally movable movable frame (18) through a lifting device, and when the block is removed from the mold. After the cover plate (7) is lifted up by the lift device, the moving frame (18) is moved to retract the cover plate (7) from the upper side of the block to the side, and the concrete for demolding the block. A concrete block forming mold, wherein a spring (26) is used as the lift device in the block forming mold.