JPH0686046B2 - Mold for large concrete blocks - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a molding die for a large-sized concrete block such as a retaining wall concrete block.

[Problems to be Solved by Prior Art and Invention]

Conventionally, for molding large concrete blocks such as retaining wall concrete blocks, concrete is poured into a mold installed on the ground, a rubber box cover is fitted on the mold after curing, and steam is introduced for several hours inside. The product was then cured by heating and left for a further many hours to complete curing, and then the box cover was removed and the product was taken out of the mold to take out the product.

The conventional method has various drawbacks as follows.

The concrete pouring work is a high place work performed on the mold, and there is a risk of accidentally falling.

The same applies not only to the concrete pouring work, but also to the work such as air cleaning and mold release agent application in the preceding process.

The same applies to operations such as vibration addition and seat box hanging in the subsequent process.

When demolding, the molding front frame and the molding side frame are usually laid down, but this work also has the drawback that there is a risk of crushing the foot and that the front wall is easily damaged.

In this case, a space for collapsing is required, and the work area becomes larger.

The present invention relates to a molding die for a large-sized concrete block that solves the drawbacks of the conventional method.

[Means for Solving the Problems]

 The gist of the present invention will be described with reference to the accompanying drawings.

A forming mold a for forming a large-sized retaining wall concrete block having a pedestal wall and a rising wall as main parts in an inverted state, in which a forming front frame 3 is erected on a front side of an underframe 2 of a forming die body 1. The pre-molding frame 3 and the molding die body 1 are provided with a moving device 4 which slides and separates the pre-molding frame 3 forward by an interval required for product demolding while standing upright. A front frame clamp device 7 for maintaining a predetermined facing gap with
A molding side frame 5 is additionally provided on the left and right side surfaces of the molding die body 1, and a rear edge portion 5'of this molding side frame 5 is pivotally attached to a rear edge portion 1'of the molding die body 1 to form the molding side frame 5 as a product. An opening / closing device 6 that opens outward by an angle required for demolding is provided on the molding die main body 1 and the molding side frame 5, and a side frame clamp that maintains the joined state of the molding side frame 5 with the molding die body 1 and the molding front frame 3. Forming device main body 1 with devices 8 and 9
The concrete is poured into the mold a in which the mold surfaces 1a, 1a ', 3a, and 5a are formed on the upper and front surfaces of the mold, the inner surface of the molding front frame 3, and the inner surface near the front edge of the molding side frame 5, respectively, and the curing curing is performed. Mold for large concrete block, characterized in that the pre-molding front frame 3 is moved forward by the moving device 4 and the molding side frame 5 is opened outside by the opening / closing device 6 to pull up the product upward to remove the mold. It is related to.

[Action]

When the moving device 4 is operated and moved, the molding front frame 3 of the molding die a.
Is moved upside down on the underframe 2 by the moving device 4 in a standing state and separated from the mold body 1.

When the opening / closing device 6 is operated and moved, the molding side frame 5 is opened to the outside, and the front side of the molding side frame 5 is separated from the molding die body 1 and the molding front frame 3.

In this state, the product hardened in the molding die a is lifted up from the opening by a lifting device such as a crane to remove the mold, and is lowered to the ground to complete the demolding work.

At the time of molding, the molding front frame 3 is opposed to the molding die body 1 at a predetermined interval by the moving device 4, and the state is maintained by the front frame clamp device 7, and similarly, the molding side frame 5 is closed by the opening / closing device 6. The front edge of the molding side frame 5 is kept in close contact with the front molding frame 3, the side surface, and the side surface of the molding die body 1 by the frame clamping devices 8 and 9.

〔Example〕

The drawing shows an example of an implementation in which a large retaining wall concrete block in which the front edge of the pedestal wall protrudes slightly ahead of the rising wall is molded, and a large retaining wall concrete whose main part is the pedestal wall and the rising wall. A molding die a for molding in a state where blocks are inverted, in which a molding front frame 3 is erected on the front side of an underframe 2 of a molding die body 1, and the product demolding is performed while the molding front frame 3 is erected. A moving device 4 that slides and separates forward by an interval required for the front frame 2 and the pre-molding frame 3, and a front-frame clamping device 7 that maintains a predetermined facing gap between the pre-molding frame 3 and the molding die body 1. A molding side frame 5 is additionally provided on the left and right side surfaces of the molding die body 1, and a rear edge portion 5'of this molding side frame 5 is pivotally attached to a rear edge portion 1'of the molding die body 1 to form the molding side frame 5 as a product. An opening / closing device 6 that opens outward by an angle required for demolding is provided in the molding die body 1 and the molding side frame 5, The side frame clamping device 8, 9 to maintain the joined state of the form side frame 5 and the mold body 1 and forming the front frame 3 is provided, the upper surface and the front surface, the inner surface of the molding front frame 3 of the mold body 1,
Forming die surfaces 1a, 1a ', on the inner surface near the front edge of the molding side frame 5, respectively.
Inject concrete into the mold a with 3a and 5a,
After curing and curing, the pre-molding frame 3 is moved forward by the moving device 4,
The present invention relates to a molding block for a large-sized concrete block, characterized in that the molding side frame 5 is opened to the outside by an opening / closing device 6 and the product is pulled up and released from the mold.

More specifically, the rails 30 on the left and right of the front part of the underframe 2
30 'and racks 31 and 31' are installed side by side, a rotary shaft 32 is laterally installed under the molding front frame 3, and rotary wheels 10 and 10 'rotatably provided on the left and right of the rotary shaft 32 are mounted on the rail 30.・ Pinions 11 ・ 11 'mounted on 30' and fixed to the left and right of the rotary shaft 32 are used for racks 31.3
Engage in 1 '.

The sprocket gear 12 is fixed to one side of the rotary shaft 32, the auxiliary rotary shaft 13 is horizontally installed in front of the sprocket gear 12, and between the small sprocket gear 14 and the sprocket gear 12 fixed to the auxiliary rotary shaft 13. The chain 15 is suspended, and the chain 19 is suspended between the intermediate sprocket gear 16 adjacent to the small sprocket gear 14 and the sprocket gear 18 provided on the drive shaft 17 which is horizontally extended above, and the end of the drive shaft 17 is suspended. Is attached to the outside of the front frame 3 and a handle 20 is attached.

When the handle 20 is rotated, the rotating shaft 32 rotates by the chain drive, and the pinion rack action causes the pinion 11.
The pre-molding frame 3 on the side to which 1'is attached advances and separates from the mold body 1.

When the handle 20 is rotated in the reverse direction, the molding front frame 3 retracts and abuts against the molding die main body 1. In this state, the front frame clamping device 7
To maintain.

In the front frame clamping device 7 of the drawings, for example, a plurality of clamp hooks 22 are projected from a crosspiece 21 provided between the upper surface of the underframe 2 and the lower surface of the molding die body 1 at substantially equal intervals, and the clamp hooks 22 Then, the moving device 4 is lifted by a foot-operated or manually operated lever operation mechanism 23 (a connecting rod 23 in the drawing can be held by hand and pulled up, but actually a pull-up device for stepping is provided).
The clamp plate 24, 25 is rotated by rotating the handle 20 while engaging the rotary shaft 32 of
By moving the clamp pin 26 installed between 24 and 25, the contact state between the molding die body 1 and the molding front frame 3 is clamped and fixed so as not to separate.

Since the molding side frame 5 is also opened and closed, side frame clamp devices 8 and 9 having the same function as the front frame clamp device 7 for fixing the closed state to the molding front frame 3 are provided.

The side frame clamp device 8 is provided with a lever shaft provided on the clamp shaft 27, in which several clamp hooks 28 are moved together by a connecting rod 29 to be manually engaged with a clamp shaft 27 which is vertically installed on a side surface of the pre-molding frame 3. By inserting an appropriate lever into the tube 35 and pushing or pulling the lever, the clamp shaft 27 is rotated and clamped by the clamp pin 36 attached to the clamp shaft 27.

The side frame clamp device 9 has the same structure, and the reference numeral 37 is a connecting rod, 38
Is a clamp hook, 39 is a clamp shaft, and 40 is a clamp pin.

Further, reference numeral 41 in the drawing is a groove for forming a reinforcing wall, and 42 is a recess for forming adjacent connecting protrusions.

〔The invention's effect〕

Since the present invention is configured as described above, it exhibits the following features.

． For example, when the moving device is actuated by driving operation such as turning the handle, the molding front frame moves forward or backward while standing upright, and there is a predetermined interval apart from the mold body, that is, the thickness of the rising wall of the retaining wall concrete block. Are held in a facing state.

Further, the molding side frame can be opened and closed like a door by operating an opening / closing device on the side surfaces of the molding die main body and the molding front frame.

Therefore, it is safer than the conventional molding frame which tilts forward and saves space, and the separation contact and the opening / closing approach are extremely easily performed.

． Both the pre-molding frame and the molding side frame are maintained by the clamping action by the front frame clamping device and the two sets of side frame clamping devices, respectively.

． Therefore, it becomes an excellent mold for a large-sized concrete block capable of safely and efficiently molding a product of a large-sized concrete block such as a retaining wall.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a perspective view showing an open state of a molding die a of the present invention, and FIG. 2 is a left side view of the same closed state in which a part is cut away. Fig. 3 is a front view showing a moving device and a clamp device provided in the lower part of the molding front frame, Fig. 4 is a lower side view of the molding front frame in a separated state, and Fig. 5 is a side face in the same closed state. 6 and 6 are side views for explaining the moving device 4, and FIG. 7 is a cross-sectional plan view for explaining the side frame clamping devices 8 and 9. a ... Mold, 1 ... Mold body, 1 '... Rear edge portion, 1a, 1a'
・ 3a ・ 5a ... Mold surface, 2 ... Underframe, 3 ... Molding front frame, 4 ... Moving device, 5 ... Molding side frame, 5 '... Rear edge part, 6 ... Opening / closing device,
7 ... Front frame clamp device, 8 · 9 ... Side frame clamp device.

Claims (1)

[Claims] 1. A molding die for molding a large-sized retaining wall concrete block having a base wall and a rising wall as main parts in an inverted state, wherein a molding front frame is erected on the front side of the underframe of the molding die body. The front frame and the front frame are provided with a moving device that slides and separates the front frame by an interval required for product release from the mold while keeping the front frame upright, and a predetermined facing gap between the front frame and the main mold body is provided. A front frame clamp device is installed to maintain the molding side frame, and the molding side frames are attached to the left and right side surfaces of the molding die body, and the rear edge portion of this molding side frame is pivotally attached to the rear edge portion of the molding die body to form the molding side frame. An opening / closing device that opens to the outside by the angle required for product demolding is provided on the molding die body and molding side frame, and a side frame clamp device that maintains the joined state of the molding side frame with the molding die body and the molding front frame is formed. Molded on the upper and front surfaces of the mold body, the inner surface of the molding front frame, and the inner surface of the molding side frame near the front edge, respectively. Concrete was poured into the mold with the surface formed, and after curing and curing, the pre-molding frame was moved forward by the moving device, the molding side frame was opened to the outside by the opening and closing device, and the product was pulled up and provided for demolding. Mold for large concrete blocks characterized by