JPH079607Y2 - Molding form for concrete blocks - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a molding block for a concrete block that can be demolded from a product by curing for a short time.

(Problems to be Solved by Prior Art and Invention) A formwork holds a concrete shape of a product and holds the concrete until it has sufficient strength. By the way, steam curing is often used to promote concrete strength, but it is usually a large-scale product that is steam cured for 4 to 5 hours.
It is common to remove the mold when it has a compressive strength of about 0 to 120 kg / cm ² . Therefore, at least 4-5 during curing
The formwork cannot be reused for a period of time, which is why
It was necessary to increase productivity by increasing the number of molds and increasing the size or expansion of the curing furnace by ignoring economic efficiency.

The present invention has been devised in view of the above-mentioned conventional defects, and the purpose thereof is to enable product demolding with a short curing time, and thus to increase the rotation rate of mold reuse. It is an object to provide a molding block for a concrete block that can improve productivity economically.

(Means for Solving the Problems) In order to achieve the above-mentioned object, a forming mold of a concrete block according to the present invention is a) a mold body b) is detachably installed on a base of the mold body. A product cradle that is taken out of the mold body with the molded product placed on it, and is removed and replaced with a new product cradle c) A removable medium sized mold body and product cradle that are separate from each other d) An auxiliary means for taking out, which is provided on the product cradle, so that a taking-out means such as a hanging tool for taking out the product cradle from the mold body together with the molded product can be attached to the product cradle. It is composed of four elements.

(Operation) After curing for a short time, the mold is opened and the medium mold is taken out.
Then, while the take-out means such as a hanging tool is attached to the take-out auxiliary means provided in the product cradle, the molded product is placed on the product cradle,
Natural curing is performed by taking it out from the mold body together with the product cradle and leaving it as it is. On the other hand, the mold body whose product has been demolded is quickly cleaned and a new product cradle is installed on the base of the mold body. Next, the cleaned medium size is installed, and a series of work such as mold assembly is advanced to prepare for the next concrete pouring.

When the molded product that has been taken out has sufficient strength to withstand handling such as transportation, it is picked up from the product cradle and transported to the stockyard for shipment.

In other words, the molded product taken out from the mold body may be carried to the curing furnace while being placed on the product cradle, and may be subjected to forced curing again until the required compressive strength is obtained.

(Embodiment) An embodiment in which the present invention is embodied in a molding die having a variable gradient side groove will be described below.

In the figure, reference numeral 1 denotes a formwork main body, and side plates (girder plates) 3 and side plates 4 are attached to the front and rear and left and right sides of a base 2 thereof so as to be openable and closable. In the illustrated embodiment, both the side plates 3 and 4,
The hinges provided on the legs 5 and 6 can be opened and closed, but the hinges may be opened and closed by another method, for example, a slide method using a rail or the like. These side plates 3,
4 is a molding surface 7, 8 inside which defines the outer shape of the molded product.
To form. Further, a fall prevention plate 9 for restricting the opening of the side plate 4 is provided on the lower outside of the side plate 4. When the side plate 4 is opened to a predetermined angle, the fall prevention plate 9 comes into contact with a frame 10 for inserting a fork attached to the lower surface of the base 2 to support the side plate 4.

Then, on both front and rear end surfaces of the base 2, knock pin receivers 12 used for positioning with a product receiving base 11 described below are provided. Reference numeral 13a denotes a positioning dowel pin projecting from the molding surface 7 of the side plate (strip plate) 3, a positioning hole 13b provided at the side end of the side plate 4, and upper and lower positioning holes provided at the side end of the middle die 20 described later. It fits into the positioning hole 13c.

The product cradle 11 is composed of a cradle part 15 which is mounted on the base 2 and which has a horizontal molding surface 14 on the upper peripheral edge, and a standing frame pedestal part 16 provided at the center of the top surface of the cradle part 15.
It can be detachably installed on the base 2. The positioning of the product cradle 11 with respect to the mold body 1 is performed by positioning the knock pins 17 provided on the front and rear end surfaces of the cradle part 15 with the knock pin receivers provided on the base 2.
It is done by fitting to 12.

The inside of the frame of the rising frame base portion 16 is open vertically, and a lifting assisting means for lifting the entire receiving base portion 15, for example, a hanging tool 18 described later can be detachably mounted in the open frame. The pair of square pipes 19 that can be formed are fixed in the vertical direction with a predetermined gap therebetween. Desirably, the upper end of the square pipe 19 is prevented from protruding above the frame base portion 16. Instead of the square pipe 19, for example, a hook of a crane can be hooked directly or indirectly through a wire or the like so that a member such as a hanging rod is erected in the frame. May be. Then, a knock pin 21 used for positioning with the middle die 20 is provided at the center of both short sides of the frame base portion 16 so as to project.

The middle mold 20 is a detachable member that is formed separately from the mold body 1 and the product receiving base 11. That is, this medium size 20
Is narrower than the frame base portion 16 of the product receiving base 11 and has substantially the same length as the receiving base portion 15.
Which has a U-shaped cross section and can be detachably installed on the frame base portion 16. The positioning with respect to the product receiving base 11 when installing the middle sized 20 is performed by positioning the frame base portion in the positioning hole 23 provided in the bottom surface portion.
This is done by fitting the knock pins 21 provided on the 16 together. Further, a pulling-out assisting means, for example, a demolding link 24, which can pull both molding surfaces 22 inward or push them away in the opposite direction, is attached to the inner upper portion of the middle die 20. That is, the demolding link 24 is composed of two link members 25 attached inside the middle die 20 at a predetermined interval, and a rod 26 connecting the link members 25 to each other. The link member 25 is composed of three plate pieces, and when the central plate piece having the hanging hole 27 is pulled up or pushed back, the left and right plate pieces that are rotatably pin-coupled to each other form the molding surface 22. To pull inward or push away. It should be noted that a part of the bottom surface of the middle die 20 is open, so that the lifting assisting means such as the square pipe 19 or the hanging rod described above can penetrate the bottom surface even if it projects above the frame base portion 16 so that it does not interfere. I'm running.

Next, a method of using the molding frame having such a configuration will be described.

First, with the side plate (strip plate) 3 and the side plate 4 open, the product receiving base 11 is installed on the base 2 of the mold body 1. The positioning of both is performed by fitting the knock pin 17 and the knock pin receiver 12. Next, the reinforcing bars are arranged on the molding surface 14 of the product receiving table 11. Install the medium size 20 on the frame base part 16. Both are positioned by fitting the dowel pin 21 into the positioning hole 23. Close the side plates 3 and 4 to form a mold. Fill the formwork with concrete and compact it with a vibrator. When compaction is completed, the form is transferred to a curing furnace and steam-cured. Remove the concrete from the curing furnace when the compressive strength reaches about 40 kg / cm ² . The time required for curing is about one and a half hours with steaming at about 60 ° C., which is an extremely short time.

When the formwork is taken out of the curing furnace, first the side plate (gable plate) 3 is opened. Then, the middle mold 20 is pulled up. At this time, pass a wire or the like through the hanging hole 27 of the link member 25,
Make sure to hang it on the hook of the overhead crane and lift it. When a pulling force is applied, both molding surfaces 22 are pulled inward by the action of the demolding link 24 and are separated from the concrete surface, so that the middle mold 20 can be pulled out without difficulty.

Next, the side plate 4 is opened, and the molded product is taken out from the mold body 1 together with the product receiving base 11. At this time, the compression strength of the molded product is about 40 kg / cm ² as described above, so if the molded product is directly clamped and taken out, the shape will definitely collapse, but it was placed on the product cradle 11. There is no problem if it is taken out in the state. For the take-out method,
There is a method of using the hanger 18 as shown in FIG.

That is, the suspending tool 18 includes a pair of left and right suspension pipes 29 each having a handle 28 at the upper end, and upper and lower connecting plates 31 and 32 each having a guide ring 30 through which the pipes 29 are inserted. A flange portion 31 having four claws is provided at the tip of the hanging pipe 29. Therefore, lower the suspension pipe 29 at the position where the handle 28 is rotated 45 ° from the fixed position, and
It is inserted into the square pipe 19 fixed to. When the insertion is completed, when the handle 28 is rotated again in either direction by 45 °, the four claws of the flange 31 are caught in the lower end of the square pipe 19 as shown by the imaginary line in FIG. It can be lifted. For hanging, hooks are hooked on the hanging plate 32 attached to the central upper part of the connecting plate 31 to form the molded product C.
Lift with an overhead crane, etc.

The molded product C taken out is left in a state of being placed on the product cradle 11 and is naturally cured as it is.

On the other hand, the mold body 1 that has completed the product demolding is promptly cleaned and a new product receiving stand 11 is installed. Then
Prepare for the next concrete pouring by proceeding with a series of preparatory work such as installing the rebar and installing the cleaned medium-sized 20 and mold assembly.

When the molded product C left unattended has sufficient strength to withstand handling such as transportation, that is, when it has a compressive strength of about 100 to 120 kg / cm ² , it is picked up from the product cradle 11 and carried to a stockyard. Wait for shipment after stacking in the state shown in FIG.

In other words, the molded product C taken out from the mold body 1 is carried again to the curing furnace while being placed on the product receiving table 11, steam-cured again until it has a required compressive strength, and then carried to the stockyard. May be. Since the concrete is exposed, the efficiency of heat treatment is good and the second curing can be completed in a short time.

The technical idea of the present invention can be applied to concrete blocks other than the variable slope gutters, for example, a mold for molding a box culvert by changing the concrete form of the mold. Further, in this embodiment, the curing with steam has been described, but the mold according to the present invention can be used for curing other than steam, for example, curing with hot air, electricity, infrared rays, high pressure, or the like.

(Effect of the Invention) As will be apparent from the above-mentioned details, the molding frame according to this invention is removably installed in the frame body and taken out from the frame body with the molded product placed thereon. Since a new product cradle and a product cradle that can be removed and replaced are provided, the molded product remains on the product cradle without being transferred from the product cradle to another product immediately after demolding. Since it can be placed on the compression pedestal for a short period of curing, it can be left on the compression cradle for a short period of time, and the mold can be removed quickly while the compression strength is insufficient. Even if it is broken, there is no danger that the shape will be lost during handling after demolding.

Further, since the product cradle is provided with auxiliary means for taking out, which can be attached with a take-out means such as a hanging tool, in a state where the molded product is placed on the product cradle, Since it can be easily and smoothly taken out from the main body, even if a molded product with insufficient curing strength due to insufficient curing is placed on the product cradle, the molded product will lose its shape when taking it out. You can prevent such failures.

Therefore, according to the forming mold of the present invention, it is possible to remove the product from the mold early by curing for a short time, so that it is possible to increase the rotation rate of the mold reuse and improve the productivity. Moreover, since it is only necessary to prepare an extra product pedestal to be removed and replaced, the cost of the formwork is low and it is economical.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of a concrete block forming mold according to the present invention, FIG. 2 is a front view of the same forming mold with side plates (glazed plates) removed, and FIG. 3 is a product thereof. FIG. 4 is a side view showing a state where the cradle is lifted together with the molded product, FIG. 4 is a front view thereof, FIG. 5 is an enlarged cross-sectional view showing a state where the hanging pipe is inserted into a square pipe, and FIG. 6 is molded by the mold. It is a perspective view of a concrete block. 1 ... Form frame main body, 2 ... Base 11 ... Product cradle, 18 ... Suspension device (take-out means) 19 ... Square pipe (auxiliary means for taking out) 20 ... Medium-sized, C ... Molding The product

Claims (1)

[Scope of utility model registration request] 1. A mold body and a base body of the mold body which are removably installed, and a molded product is taken out from the mold body and is replaced with a new product receiving stand. A product cradle and a removable medium sized body separate from the mold body and the product cradle,
It consists of an auxiliary means for taking out the product cradle, which is provided on the product cradle so that the hanging means for taking it out from the mold body together with the molded product can be attached to the product cradle. , Concrete block molding formwork.