JP2956276B2 - Formwork equipment for concrete block molding machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork apparatus for molding a concrete block having a bulging portion on a side face by undercut molding.

[0002]

2. Description of the Related Art In order to give a higher quality to a concrete block molded product, a product obtained by splitting or cutting a side surface of a molded product is conventionally known.
In this case, the concrete material is often wasted, and there are drawbacks such as an increase in equipment costs and operation costs.

[0003] The concrete block molding machine is a real fair 2
There is a down-drawing molding machine disclosed in JP-A-34002. When a concrete block whose side surface is bulged is molded by this lower-drawing molding machine, the bulged portion hinders the mold block from being taken out from the mold when removing the mold. To resolve this,
Japanese Patent Application Laid-Open No. HEI 2-175201 discloses an upper frame for forming a portion above a maximum bulge portion on a four-periphery frame defining four circumferences of a mold, and a lower frame for forming a portion below a maximum bulge portion. A formwork device is disclosed that allows the body to be inserted into and removed from the four-sided frame.

Japanese Utility Model Publication No. 3-325 discloses an apparatus for molding a concrete block having one side swelling and the other side flat, so that a swelling surface forming plate can be moved in the thickness direction of the block. Things are disclosed. In addition, it is a groove forming device for horizontal streaks of concrete blocks.
Japanese Patent Publication No. 39526 discloses a configuration in which a pair of window-shaped through-holes is provided in front and rear plates of a mold box, and an insertion rod for forming a groove for a horizontal streak is provided in this through-hole so as to be freely inserted and removed.

[0005]

As described above, when the fixed type and the movable type are divided into upper and lower parts from the maximum swelling part to form a fixed type and a movable type, a slight displacement caused by a manufacturing error, abrasion, or the like is caused. In addition, due to repeated vibrations and fine separation and collision caused by the vibration of the mold, streaks were formed along the boundary between the fixed mold and the movable mold in the molded product, deteriorating the commercial value. Adding a step for removing streaks led to an increase in cost. Furthermore, the above-mentioned formwork structure has a fatal defect that even if it is desired to form two or more bulging portions to achieve a higher-grade design, it cannot cope with such a problem.

An object of the present invention is to eliminate the above-mentioned problems.

[0007]

According to the present invention, a molded product formed on a pallet applied to a lower opening of a mold can be taken out from the lower opening, and the mold includes a fixed frame including a four-peripheral frame portion. In a formwork device for a concrete block molding machine constituted by a formwork and a movable form which can be inserted through through holes formed before and after the fixed formwork, an upper part of a four-periphery frame portion of the fixed formwork is provided. Has a bar-shaped upper frame portion that defines an intrusion area of the stamping die, and the movable frame has at least one side that matches the entire side surface shape of the concrete block to be molded, and has a bar-shaped upper frame of the fixed frame described above. It can be connected to the body part.

According to the present invention, the width of the concrete block to be molded is defined as the width of the concrete block to be molded, and the width of the concrete block to be molded is defined as the width of the opposing space in the upper opening of the four-circle frame that defines the four circumferences of the mold. The movable frame for separation having an outer surface matched with the cross-sectional shape of all sides of the concrete block to be molded is fitted into the through-hole formed in the four-sided frame body, and the cross-shaped upper frame is mounted. It can be connected below the upper frame.

Preferably, one of the lower surface of the bar-shaped upper frame and the upper surface of the movable separating mold is provided with a guide ridge extending in the longitudinal direction, and the other is provided with a guide groove engaging with the guide ridge. It is to form.

[0010]

[Operation] By inserting a movable separation mold through a through-hole formed in the four-peripheral frame, the movable separation mold is connected below the cross-shaped upper frame body to complete the mold. Molding is performed using this mold, and after molding, the movable mold for separation is pulled out from the mold. Even if there are multiple bulges on the side of the molded product, the movable mold for separation has an outer surface that matches the cross-sectional shape of all sides of the concrete block to be molded. The molded product can be taken out from below.

The engagement structure between the bar-shaped upper frame, the separation movable ridge, and the guide groove prevents the lateral vibration from shifting.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view schematically showing a three-piece formwork apparatus. The four-peripheral frame 1 that defines the four peripheries of the formwork is open at the top and bottom, and four cross-shaped upper frames 2 and three cores 3 are disposed in the upper opening. If one is taken, two cross-shaped upper frames 2 and one core 3 are sufficient. An elongated support member 4 is attached to the front surface of the four-round frame 1, and four separating movable dies 5 are disposed so as to hang on the supporting member 4, and a T-shaped rear end of each separating movable die 5 is provided. Numeral 6 loosely fits into the U-shaped holding portion 8 of the movable moving device 7 from above. In FIG. 1, for convenience of illustration, the tip portion of the movable separation mold 5 is drawn away from the four-circle frame 1, but in reality, FIG.
As shown in the figure, the tip end portion is slightly penetrated into the through hole 10 formed in the back of the window portion 9 formed in the four-round frame body 1 so as not to protrude into the block molding area in the form frame. Has become. Therefore, the movable type moving device 7 is operated and the arrow A
When the vehicle moves forward in the direction, the vehicle can move forward as shown in FIG. In FIG. 1, reference numeral 11 denotes a material box which can be moved in the direction of arrow B by a material box moving device, 12 denotes a pallet which can be moved in the direction of arrow C by a pallet lifting device, and 13 denotes a side frame of the molding machine. It is a receiving stand that is protruded and receives the four-circle frame 1. In FIG. 1, the vibrator for applying vibration to the mold and the pressing device installed above are omitted, but the vibrator is denoted by reference numeral 14 in FIG. 2 and the pressing die is denoted by reference numeral 15 in FIG. 3.

As can be seen from the left-hand cross-sectional views of FIGS. 4 and 5, the four-circle frame 1 of this embodiment is composed of an inner member 1a made of a material having high wear resistance and an outer member 1b made of a normal material formed by a vault. The window 9 is formed in the front and rear outer members 1b, and the through hole 10 is formed in the front and rear inner members 1a, respectively.

As can be seen from the cross-sectional views shown in the left half of FIGS. 3 and 5, the crosspiece upper frame 2 has an elongated hanging portion 2a, a rectangular main body 2b connected to the hanging portion 2a, A ridge 2c formed in the longitudinal direction of the lower surface of the main body 2b;
(a) When the mounting flanges 2d and 2d at both ends are mounted on the upper surface of the four-circle frame 1, the main body 2b is fitted in close contact with the inner surface of the four-circle frame 1. . The width of the main body 2b of the crosspiece upper frame 2 is the separation width between the concrete blocks to be molded. The interval between the main bodies 2b, 2b is the width of the concrete block to be molded.

The core 3 for forming a cavity in the concrete block is, as is clear from the cross-sectional views shown in the left half of FIGS. 3 and 4, a slender hanging portion 3a and a middle portion connected to the hanging portion 3a. It is composed of a child main body 3b and mounting flanges 3c at both ends of the hanging portion 3a, and is fixed by mounting the mounting flanges 3c, 3c at both ends to the upper surface of the four-round frame 1 as in the case of the above-described cross-shaped upper frame 2. Is done. The core 3 may not be required depending on the product.

In the above-described example, the bar-shaped upper frame 2 is attached to the upper surface of the four-peripheral frame 1 by bolts. However, the frame-shaped upper frame 2 may be fixed by welding, or a frame component including the bar-shaped upper frame 2. May be attached to the upper surface of the four-circle frame 1.

A plurality of movable dies 5 for separation are continuously inserted below the bar-shaped upper frame 2 by being inserted into through holes 10 formed before and after the four-peripheral frame 1 (the left side in FIG. 3). (See the cross-sectional view), at least one side of which conforms to the overall profile of the concrete block to be molded. In the example shown in the figure, the molded product has a concave lens shape in cross section assuming that the central portion of the side surface is bulged. However, when there are a plurality of bulged portions, the shape conforms to the shape. A guide groove 5a is formed on the upper surface of each movable mold for separation 5, that is, a joint surface with the bar-shaped upper frame 2 so as to be able to engage with the ridge 2c of the bar-shaped upper frame 2. A relief groove 5b similar to the guide groove 5a is formed in the longitudinal direction of the lower surface of each movable mold 5 for separation. The escape groove 5b is an escape groove for preventing a residue of the material or the like from being interposed between each movable mold 5 for separation and the pallet 12 to prevent the close contact therebetween.

In order to perform a molding operation using the above-described formwork apparatus, as described with reference to FIG. 6A, the ridge 2c of the bar-shaped upper frame 2 and the guide groove 5a of the movable movable mold 5 are separated from each other. 6 can be smoothly advanced by the operation of the movable type moving device 7, and as shown in FIG. 6 (B), the tip portion is slightly dropped and inserted into the through hole 10 on the rear side. Will do. Next, the pallet 12 lifted by driving the pallet lifting device
With this, the lower opening of the four-circle frame 1 is closed, and the four-circle frame 1 is slightly lifted up from the pedestal 13 by further lifting. At this time, the movable dies 5 for separation are slightly pushed up by the pallet 12, so that the projections 2c of the upper frame 2 and the guide grooves 5a of the movable dies 5 for separation are sufficiently engaged. This is as shown in FIG. When the mold is completed in this way, the material box 11 is moved forward while operating the vibrator 14 of the mold to apply vibration, and the material in the material box 11 is charged from between the cross-shaped upper frame bodies 2 and 2, The material box 11 is retracted, and the filling material in the mold is pressed by the pressing die 15 (see FIG. 3). The pressing die 15 penetrates into the mold while pressing the material, and reaches the specified size of the product, and the pressing is completed.
It is desirable that the boundary position between the movable mold for separation 5 and the lower limit of the penetration of the pressing die be set to a position higher than or equal to the lower limit position. When the compression molding is completed, the vibration is stopped, and then the separation movable mold 5 is pulled out. Subsequently, the pallet 12 and the pressing die 15
Then, the molded product is lowered while holding the molded product therebetween, and is continued to descend even after the four-peripheral frame body 1 is placed on the receiving table 13, whereby the molded product is removed from below.

[0019]

As can be seen from the above description, even if the shape of the molded product has a plurality of bulging portions, the movable separating mold has an outer shape matching the entire side surface shape of the concrete block to be molded. Since it has a side surface and can be provided continuously below the bar-shaped upper frame body, it is possible to manufacture even in the case of a down-drawing molding. Moreover, the junction between the crosspiece-shaped upper frame and the separation movable mold comes to the upper end as a molded product, and it is not a prominent part even if the appearance of streaks etc. is seen, Not be. Further, in the case where the lower surface of the cross-shaped upper frame and the upper surface of the movable movable body for separation are continuously connected by an engagement structure formed by a guide ridge and a guide groove, in addition to the original guide function, the engagement Since the structure does not cause a shift with respect to the lateral vibration, when the mold is vibrated and the material is filled, a streak is formed at the joint between the bar-shaped upper frame and the separating movable mold. Eliminate the occurrence of

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing a formwork apparatus according to the present invention.

FIG. 2 is a plan view of the four-peripheral frame of FIG. 1 as viewed from above.

FIG. 3 is a side view of the right half of FIG. 2, and a left half is a cross-sectional view during molding.

FIG. 4 is a side view of the right half viewed from the side of FIG. 2, and a left half is a cross-sectional view particularly showing a core structure.

FIG. 5 is a side view of the four-peripheral frame viewed from the side, and the left half is a cross-sectional view particularly illustrating a cross-shaped upper frame structure.

FIG. 6A is an explanatory diagram showing a state at the start of insertion of a movable separation mold. (B) is an explanatory view showing a state in which the movable separation mold has been inserted into the rear through-hole. (C)
FIG. 4 is an explanatory view showing a final state in which the movable mold for separation functions as a mold.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Four-periphery frame 2 Crosspiece upper frame 2c Ridge 3 Core 5 Movable type for separation 5a Guide groove 10 Through hole

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B28B 7/10 B28B 3/02 B28B 7/24

Claims (3)

(57) [Claims] 1. A molded product molded on a pallet applied to a lower opening of a form can be taken out from the lower opening, and the form includes a fixed form including a four-peripheral frame portion, and the fixed form. In the formwork device for a concrete block molding machine, comprising a movable form which can be inserted through through holes formed before and after the fixed formwork, the upper part of the four-periphery frame portion of the fixed formwork has a cross section which defines an intruding area of the stamping die. The movable mold has at least one side which matches the entire side surface shape of the concrete block to be molded, and can be connected to the cross-shaped upper frame of the fixed mold. A formwork apparatus for a concrete block molding machine, comprising: 2. A cross-shaped upper part in which the width of the concrete block to be molded is set as the width and the width of the concrete block to be molded is set in the upper opening of the four-peripheral frame which defines the four peripheries of the form. The frame-shaped upper frame is mounted by attaching a frame and inserting a movable separation mold having an outer surface conforming to the entire side surface shape of the concrete block to be molded into through holes formed in front and rear surfaces of the four-sided frame. A formwork device for a concrete block molding machine, wherein the formwork device can be installed below the body. 3. A cross-shaped upper part in which the width of the concrete block to be molded is set as the width and the width of the concrete block to be molded is set in the upper opening of the four-peripheral frame that defines the four peripheries of the form. The frame-shaped upper frame is mounted by attaching a frame and inserting a movable separation mold having an outer surface conforming to the entire side surface shape of the concrete block to be molded into through holes formed in front and rear surfaces of the four-sided frame. A guide ridge extending along the longitudinal direction is formed on one of the lower surface of the bar-shaped upper frame and the upper surface of the movable separation mold, and the guide ridge is formed on the other. A formwork device for a concrete block molding machine, wherein a guide groove is formed to engage with the mold.