JPS6219284B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a formwork for forming concrete blocks having a narrow body and a bulging bottom.

Concrete blocks used for seawalls, etc., have a narrow body and a bulging platform shape at the top and bottom, so the formwork for forming concrete blocks with square top and bottom surfaces requires both side plates and front and back plates. year,
It has a structure in which each plate is pivotally supported on the underframe so that it can be tilted.

Therefore, the mold cannot be removed unless the side plates on all four sides are tilted.For this reason, a formwork that is integrated with multiple molding frames requires a tilting gap between the front and rear plates of adjacent formworks, which reduces the overall size of the mold. The number of products that can be molded is extremely small compared to the length, and the efficiency is poor compared to the space occupied by the formwork. Therefore, single-cavity molds are the mainstream for this type of molding, and multi-cavity molds are impractical. In addition, it is not desirable in terms of work efficiency to raise and lower the frame plate on all four sides during die cutting and die assembly.

Therefore, the present invention aims to make it possible to form a mold with multiple molds, as well as to facilitate mold assembly and mold cutting.One of the front and rear plates is fixed to the underframe, and only the other is moved diagonally upward. By rotatably supporting the product, the lifting force of the product is used to perform mold removal, and after the product is pulled out, the product is automatically returned from the rotational position to the position when the mold was assembled. It is characterized by linking the underframe and the lower part of the rotating frame with a link rod to ensure rotation and return.

Embodiments of the present invention will be described below based on the drawings.

1 is a bottom plate placed on an underframe 2. Reference numeral 3 designates front and rear plates (hereinafter referred to as fixed plates) which are fixedly erected on the underframe 2 among the front and rear plates. The upper end horizontal portion 8 of the support rod 7 is loosely inserted into the bearings 6, 6 of the reinforcing plates 5, 5 of the body bent portion of the other front and rear plates 4 facing each other, and the lower end horizontal portion 9 of the support rod 7 is It is loosely inserted into bearings 11, 11 provided in the underframe 2, which is separated from the bottom forming surface A of the plate 4 by more than the difference between the longitudinal width (a) of the bottom of the block 10 to be molded and the longitudinal width (a) of the body. Therefore, the other front and rear plate (hereinafter referred to as a rotating plate) 4 can rotate while moving upward in parallel in an arc while moving away from the fixed plate 3 using the lower horizontal portion 9 of the support rod 7 as a fulcrum. It is becoming.

Further, a link rod 13 has one end rotatably supported on a bracket 12 provided at the lower part of the rotating plate 4, and one end is rotatably supported on the underframe 2 which overlaps with the shaft support 11. The other ends of the link rod 14 are rotatably connected to each other by a pin 15. Therefore, the angles of both link rods 13 and 14 change variously according to the rotation of the rotating plate 4, and it is possible to correspond to the distance between the pivot support of the bracket 12 and the pivot support of the underframe 2, and also to adjust the distance between the pivot support of the bracket 12 and the pivot support of the underframe 2. Since it is in a stable state at the position, a return force is generated during rotation, and the rotation plate 4 is maintained hanging vertically. 16 is a stopper for the link rods 13 and 14.

Since the present invention has the above-described structure, when cutting a finished product, first, the clamping devices on both side plates are released, and after the both side plates are turned over, the finished product 10 is lifted by a lifting machine (not shown), and the front and rear plates are removed. Fixed plate 3
is fixed to the underframe 2, so it is not affected, but the rotary plate 4 is rotatable around the horizontal part 9 of the support rod 7, and the body is rotated diagonally upward from the bottom of the product 10. Coupled with the fact that the product 10 is connected to the surface, a force acts to move the product 10 diagonally upward along the radius, and the product 10 and the fixing plate 3
As soon as the bond between them is broken, they will leave.

At this time, the connection between the product 10 and the rotating plate 4 is the product 1.
If the direction of movement of 0 and the direction of rotation of rotating plate 4 match, this will not be solved, but when the bottom of product 10 reaches the vertical surface of the body of fixed plate 3, product 10 will not move in the lateral direction. Since the lifting force is applied only in the upward direction, the rotation of the rotating plate 4 reaches the top dead center and the upward movement is blocked. , the bond between the two is naturally dissolved.

When the rotating plate rotates close to the top dead center, the supporting rod 7 is close to the vertical position, and therefore, by determining the position of the supporting point 9, the distance between the body surfaces of the fixed plate 3 and the rotating plate 4 becomes 10. The finished product 10 can be pulled out of the mold without any hindrance.

Further, even if the moving directions of the product 10 and the rotating plate 4 do not match, there is no problem because the rotating plate 4 rotates and the distance between the product 10 and the fixed plate 3 is wider than the width of the bottom of the product 10.

On the other hand, the link rods 13 and 14 that connect the lower part of the rotating plate 4 and the underframe 2 are rotatable at their respective fulcrums. The distance between the shaft supports C and D can be secured, and there is no problem in the rotation of the rotating plate 4. In addition, the pulling force of the link rods 13 and 14 is assisted by the force of the rotating plate 4 to return to the position at the time of mold assembly, and as a result, a force acting against the movement direction of the product 10 is applied, and the rotating plate 4 and the product 10 initially maintains the bonded state, and after separating from the fixed plate 3, the rotating plate 4
Since the product 10 is separated from the product 10, the pressure applied to the bottom bulging portion of the product 10 is alleviated, and damage to this portion can be prevented.

Furthermore, since the pulling force of the link rods 13 and 14 toward the rotating plate 4 and the lifting force of the product 10 act in opposite directions, it is easy to separate them, and the subsequent hanging state of the rotating plate 4 is prevented. When properly maintained, the rotating plate 4 can be moved in parallel. When the product is removed, the weight of the rotating plate 4 returns it to its original position, so when it rotates in the opposite direction, the link rod 1
3 and 14 also have a return force, which accurately guides the lower part of the rotating plate 4 to the position of the mold, and the rotating plate 4
There is no need to use external force to return the mold to the molded position.

As described above, the present invention improves work efficiency because it is only necessary to raise and lower the left and right side plates, compared to the four plates that had to be raised and lowered, namely the left and right side plates and the front and rear plates, during mold assembly and die cutting. is to be doubled.

Furthermore, when cutting the front and rear plates from the mold, there is no need to fall over, and one of the front and rear plates is simply moved by the difference between the width of the bottom bulge and the width of the body, so the front and rear width of one mold is much shorter. Therefore, it is possible to form multiple molds in which a large number of molds are arranged side by side within a certain length even in this type of seed block.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of the formwork according to the present invention, FIG. 2 is a cross-sectional view thereof, and FIG. 3 is a side sectional view showing the state at the time of demolding. Symbols: 1 is the bottom plate, 2 is the underframe, 3 is the fixed plate, 4 is the rotating plate, 7 is the support rod, and 13 and 14 are the link rods.

Claims (1)

[Claims] 1 Both side plates are pivotally supported on the underframe so that they can be tilted freely,
In a formwork for forming a concrete block with a thin body and a bulging bottom, the front and rear plates are tightened as if they are sandwiched, one of the front and rear plates is a fixed plate fixed to the underframe, and the other front and rear plate is rotated. The tip of the support rod is pivoted at a position on the underframe that is further away from the rotating plate than the difference in front-to-back width between the bottom of the concrete block that forms the base and the body. Attached to the board,
The rotating plate pivots in parallel in an arc shape in the front-rear direction using the base of the support rod as a fulcrum, and both ends of the link rod, whose one end is rotatably connected, are connected to the underframe and the lower part of the rotating plate. A formwork for forming a concrete block, which responds to the rotation of a rotating plate and urges the formwork to return to the forming position.