JPH04112004A - Molding mold for large concrete blocks - Google Patents

Abstract

PURPOSE:To safely and easily perform separation and attachment, opening and closing and attachment by introducing concrete into a forming mold and advancing a molding front frame by a transfer device after curing and opening a molding side form to the outside by an opening and closing device and pulling up a product to the upper part and demolding the product. CONSTITUTION:In the case of molding, a molding front form 3 is joined to a forming mold body 1 by a transfer device 4. This state is maintained by a clamping device 7 of the front form and a molding side form 5 is closed by an opening and closing device 6. The front edge of the molding side form 5 is brought into contact with the side face of the molding front frame 3 and the side face of the forming mold main body 1 and maintained by the clamping devices 8, 9 of the side frame. When the transfer device 4 is operated and driven after concrete introduced into a forming mold (a) is cured, the molding front form 3 of the forming mold (a) is moved to the outside on an underframe 2 while keeping an erecting state and separated from the forming mold main body 1. Further when the opening and closing device 6 is operated and driven, the molding side form 5 is opened a little to the outside and the part near to the front edge of the molding side form 5 is separated from the forming mold main body 1 and the molding front form 3. A hardened product is pulled up to the upper part from an opening port by a pulling-up device, demolded and lowered on the ground. Thereby demolding work is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mold for large concrete blocks such as retaining wall concrete blocks.

[Problems to be solved by conventional technology and invention]

Traditionally, large concrete blocks such as retaining wall concrete blocks were formed by pouring concrete into a mold set on the ground, and after curing, the mold was covered with a rubber box cover, and steam was introduced inside for several hours. The product was then heated and cured, and left to stand for many hours until curing was complete, after which the box cover was removed, the mold was removed, and the product was taken out.

Such conventional methods have various drawbacks as follows.

■ Concrete pouring work involves working at heights above molds, and there is a risk of accidental falls.

This applies not only to concrete pouring work, but also to pre-process work such as air cleaning and mold release side coating.

The same applies to the post-process work such as adding vibration and hanging the seat box.

■ When demolding, the front molding frame and the molding side frames are usually folded down, but this operation also has the disadvantage that there is a risk of crushing the legs and that the front wall is easily damaged.

In this case, you need space to knock it down. The business area will be that much larger.

The present invention relates to a mold for large concrete blocks that solves the drawbacks of such conventional methods.

(Means for solving problems) The present invention will now be described in detail with reference to the accompanying drawings.

In a mold a for molding a large concrete block whose main parts are a base wall and a rising wall in an upside down state, a molding front frame 3 is erected on the front side of the base frame 2 of the mold body 1, and this molding A moving device 4 is provided on the underframe 2 and the molding front frame 3 to slide the front frame 3 forward and away by the gap required for demolding the product while the front frame 3 is in an upright state. A front frame clamp device 7 for maintaining the front frame clamping device 7 is attached to the molding front frame 3, and molding side frames 5 are attached to the left and right sides of the mold body 1, and the rear edge 5' of this molding side frame 5 is attached to the rear edge of the mold body 1. An opening/closing device 6 is provided on the mold body 1 and the mold side frame 5, and is pivoted to the mold body 1' and opens the mold side frame 5 outward by an angle required for demolding the product. Side frame clamping devices 8 and 9 for maintaining the joined state with the frame 3 are provided on the molding side frame 5, and clamp devices 8 and 9 are provided on the molding side frame 5 to clamp the upper surface and front surface of the mold body 1, the inner surface of the pre-molding frame 3, and the molding side frame 5.
The mold surfaces 1a, 1a', 3a, and the inner surface near the leading edge of the
5a, and after the concrete poured into the mold a has hardened, the front molding frame 3 is moved forward by the moving device 4, and the molding side frame 5 is opened outward by the opening/closing device 6, and the product is pulled upward and removed from the mold. The present invention relates to a mold for a large concrete block, which is characterized in that it is provided so as to

[For production]

When the moving device 4 is operated and moved, the front molding frame 3 of the mold a
moves outward on the underframe 2 and separates from the mold body 1 while remaining in an upright state.

Moreover, when the opening/closing device 6 is operated and moved, the molding side frame 5 opens slightly outward, and the molding side frame 5 is moved from the mold main body 1 and the molding front frame 3 to the molding side frame 5.
The part near the leading edge separates.

In this state, the product hardened in the mold a is lifted upward from the opening by a lifting device such as a crane to be demolded, and then lowered to the ground to complete the demolding operation.

During molding, the moving device 4 joins the molding front frame 3 to the mold body 1, the front frame clamping device 7 maintains this state, and the opening/closing device 9 similarly connects the front edge of the molding side frame 5 to the molding front frame. 3 and the side of the mold body 1 to maintain close contact.

〔Example〕

Rails 30, 30゜ and racks 3 are placed on the left and right sides of the front of the underframe 2, respectively.
1 and 31゛ are installed in parallel, and a rotating shaft 32 is installed at the bottom of the front molding frame 3.
The rotating wheels 10 and 10', which are rotatably provided on the left and right sides of the rotating shaft 32, are mounted on the rails 30 and 30', and the pinions 11 and 11'' fixed on the left and right sides of the rotating shaft 32 are mounted on the rack 31.・Match at 31°.

A sprocket gear 12 is fixed to one side of the rotating shaft 32, an auxiliary rotating shaft 13 is horizontally mounted in front of the sprocket gear 12, and a small sprocket gear 14 fixed to the auxiliary rotating shaft 13 is connected between the sprocket gear 12 and the sprocket gear 12. A chain 15 is suspended between the intermediate sprocket gear 16 adjacent to the small sprocket gear 14 and a sprocket gear 18 provided on the drive shaft 17 horizontally suspended above. A handle 20 is attached by making the end portion protrude from the outer surface of the front molding frame 3.

When the handle 20 is turned by hand, the molding front frame 3 on the side to which the rotary shaft 32 has the chiebini lower parts 11 and 11' attached moves forward and separates from the mold body 1.

When the handle 20 is rotated in the opposite direction, the molding front frame 3 retreats and comes into contact with the mold body 1, but this state is maintained by the front frame clamping device t7.

The front frame clamp device 7 shown in the drawings has several clamp hooks 22 protruding from a crosspiece 21 provided between the upper surface of the underframe 2 and the lower surface of the mold body 1, for example, at approximately equal intervals. is lifted up by a foot or manual lever operating mechanism 23 (in the drawing, the connection rod 23 can be pulled up by hand, but in reality, a lifting device such as a foot is provided) and engaged with the rotating shaft 32 of the moving device 4. Then, by rotating the handle 20, the clamp plates 24 and 25 are rotated, and the clamp pin 26 installed between the clamp plates 24 and 25 is moved to bring the mold body 1 and the front molding frame 3 into contact. Clamp and fix the contact state so that it cannot be separated.

Since the molding side frame 5 also opens and closes, side frame clamp devices 8 and 9 are provided which function similarly to the front frame clamp device 7 for fixing the molding front frame 3 in a closed state.

The side frame clamping device 8 connects several clamp hooks 28 to a clamp shaft 27 installed on the side surface of the front frame 3 in the vertical direction.
9 and manually engage the clamp shaft 2.
A suitable lever is inserted into the lever receiver 35 provided at 7, and by pushing or pulling the lever, the clamp shaft 27 is rotated, and the clamp pin 36 attached to the clamp shaft 27 is
Clamp.

The side frame clamping device 9 also has the same structure, and reference numeral 37 is a connecting rod;
38 is a clamp hook, 39 is a clamp shaft, and 4o is a clamp pin.

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

〔Effect of the invention〕

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

(5) When the moving device is actuated by a driving operation such as rotating the handle, the molding front frame moves forward or backward while remaining upright, and moves away from or comes into contact with the mold body.

It can be opened and closed like a door by the opening/closing device on the side.

Therefore, it is safer than conventional molds that can be tilted forward, takes up less space, and allows separation and contact, opening and closing, to be performed extremely easily.

(2) The molding state of both the front molding frame and the molding side frames is maintained by clamping action by a front frame clamp pin device and two sets of side frame clamp devices.

(2) Therefore, it is an excellent mold for large concrete blocks that can safely and efficiently form large concrete block products such as retaining walls.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view showing the mold a of the present invention in an open state, and FIG. 2 is a partially cutaway left side view of the mold a in the closed state during molding. Figure 3 is a front view showing the moving device and clamping device provided at the bottom of the molding front frame, Figure 4 is a lower side view of the molding front frame in the separated state, and Figure 5 is a side view of the same in the closed state. 6 is an explanatory side view of the moving device 4, and FIG. 7 is an explanatory cross-sectional plan view of the side frame clamp devices 8 and 9. a...Mold, ■...Mold body, 1'...Rear edge, 1a, 1a', 3a, 5a...Mold surface, 2...
・Underframe, 3... Pre-molding frame, 4... Moving device, 5...
・Molding side frame, 5'...rear edge, 6...opening/closing device, 7
...Front frame clamp device, 8/9...Side frame clamp device. August 31, 1990

Claims (1)

[Claims] In a mold a for molding a large concrete block whose main parts are a base wall and a rising wall in an upside down state, a molding front frame 3 is erected on the front side of the base frame 2 of the mold body 1, and this molding A moving device 4 is attached to the underframe 2 to slide the front frame 3 forward by the gap required for demolding the product while the front frame 3 is in an upright state.
A front frame clamping device 7 is provided on the front molding frame 3 to maintain the bonded state between the front molding frame 3 and the mold body 1. Molding side frames 5 are attached to the left and right sides of the mold body 1 on the front molding frame 3. The rear edge 5' of this molding side frame 5 is pivoted to the rear edge 1' of the mold body 1, and an opening/closing device 6 is installed in the mold to open the molding side frame 5 outward by an angle required for demolding the product. Side frame clamping devices 8 and 9 are provided on the molding side frame 5 to maintain the joined state between the molding side frame 5, the mold body 1, and the front molding frame 3, and Molding mold surfaces 1a, 1a', and 3a are provided on the upper surface, the front surface, the inner surface of the front molding frame 3, and the inner surface near the front edge of the molding side frame 5, respectively.
5a is formed, and after the concrete poured into the mold a hardens, the front molding frame 3 is moved forward by the moving device 4, the molding side frame 5 is opened outward by the opening/closing device 6, and the product is pulled upward and removed from the mold. A mold for large concrete blocks, which is characterized by being provided so as to