JPH0622746B2 - Weir folding device for casting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention relates to a casting dam folding device.

[Prior art]

In casting, in order to remove the riser from the casting,
So-called weir folding is necessary.

Conventionally, when this weir folding is carried out, a cast molded product is carried from the casting site to the weir folding site and broken by a hammer or the like at this weir folding site.

However, since the cast molded product is heavy, it has a disadvantage that it requires heavy labor for transportation work and that the weir folding work with a hammer must be performed with caution.

[Specific purpose of the invention]

The present invention has been made based on such a situation, and an object thereof is to provide a weir folding device for casting, which allows anyone to easily perform a weir folding operation.

[Means for achieving the purpose]

The object includes a hydraulic power source unit and an operating portion that is operated by the hydraulic power source unit, and the operating portion includes a pair of operating levers and a hydraulic piston / cylinder mechanism,
In a casting dam folding device in which the hydraulic piston / cylinder mechanism is operated by the hydraulic power source unit to swing the pair of operating levers, the pair of operating levers pivotally support each other at respective root portions. In addition, the cylinder is fixed to the one operating lever and the piston rod is connected to the other operating lever, and the pair of operating levers can be swung in opposite directions by advancing and retracting the hydraulic piston / cylinder mechanism. An operating handle is installed on an operating lever to which the cylinder is fixed, and an operating lever for controlling the operating lever is provided on the operating handle, the hydraulic power source unit is independent of the operating portion, and the hydraulic power source unit and Length between the piston part of the working part and the cylinder part of the cylinder mechanism It was achieved by characterized in that is connected by a flexible conduit.

[Action]

Since the casting dam folding device according to the present invention is configured as described above, only the operating portion can be moved to a desired position separately from the hydraulic power source unit.

Further, since the cylinder is fixed to one of the operating levers and the piston rod is connected to the other operating lever, the pair of operating levers can be rocked in opposite directions by advancing and retracting the hydraulic piston / cylinder mechanism. The pair of actuating levers can be swung quickly.

Further, since the pair of actuating levers can be swung in the opposite directions, the weir folding work can be performed both when the actuating lever is expanded and when the actuating lever is closed.

Further, the conduit connecting the cylinder part of the operating part and the hydraulic pressure source unit is composed of a main conduit connected to the hydraulic pressure source unit and a slave conduit connected to the cylinder, and the slave conduit is detachably attached to the main conduit. If a required number of connection ports for inserting and inserting are provided, the operation part can be easily replaced.

Further, by making the hydraulic power source unit movable along the rail and suspending the operating portion from the rail, the transportation of the operating portion becomes easy.

[Explanation of Examples]

 Embodiments of the present invention will be described below with reference to the drawings.

First, an embodiment of the first invention will be described with reference to FIGS. 1 and 2.

In the figure, 1 is a support rail, 2 is a moving member that moves horizontally along the support rail 1, and 3 is a rope winding device installed on this moving member 2. In the rope winding device 3, the rope 4 can be stopped at an appropriate position. In order to wind up the rope 4 with the winding device 3, the operating portion 6 described later may be lightly pushed up. Reference numeral 5 denotes a hydraulic power source unit mounted on the moving member 2.

Further, 6 is an operating portion, which is suspended from the moving member 2 by a rope 4.

Next, the operating portion 6 will be described in detail with reference to FIGS. 1 and 2.

11 and 13 are actuating levers, which are pivotally attached to each other by a shaft 15 at the root. These actuating levers 11,13
Is to penetrate into the gap between the cast molding A and the riser C at the tip. Reference numerals 17 and 17 denote concave-convex processed surfaces, which are formed on the outer surfaces of the tips of the operating levers 11 and 13. The uneven surfaces 17 and 17 prevent the operating levers 11 and 13 from slipping when the operating levers 11 and 13 are pressed against the casting A and the feeder C. It is also possible to perform a weir folding operation by sandwiching the cast molded product A and the riser C by the operating levers 11 and 13 and closing the operating levers 11 and 13 in this state.

Next, 19 is a hydraulic cylinder, which is fixed to the operating lever 11 (the operating lever on the right side in FIGS. 1 and 2). Reference numeral 21 denotes a piston, which is inserted into the cylinder 19 so as to be able to move forward and backward. The piston 21 advances and retreats due to the flow of the hydraulic oil O filled in the cylinder 19. A piston rod 23 is fixed to the piston 21 and projects out of the cylinder 19.

Incidentally, 24 and 25 are the cylinder 19 and the hydraulic power source unit 5
Is a conduit that communicates with and supplies hydraulic oil O into the cylinder 19 and discharges hydraulic oil O from the cylinder 19 (see FIG. 1).

Reference numerals 27 and 27 denote auxiliary ribs, which are provided so as to project on the inner wall surface of the operating lever 13 (the operating lever on the left side in FIGS. 1 and 2). These auxiliary ribs 27, 27 accommodate the tip portion of the piston rod 23 in the gap. 29,29 are long holes (having a long diameter in the direction perpendicular to the drawing of FIG. 2), which are formed in the auxiliary ribs 27,27. Further, 31 is a through hole, which is formed at the tip of the piston rod 23. By penetrating the support shaft 33 through the long holes 29, 29 and the through hole 31, the tip end portion of the piston rod 23 is pivotally attached to the auxiliary ribs 27, 27, and thus the operating lever 13. 35 is a pin, the support shaft 33
We are trying to prevent it from slipping out. Further, 37 is a stopper fixed to the piston rod 23, which prevents the operating levers 11 and 13 from opening more than necessary.

Reference numeral 41 is an operation handle having an annular portion 41a, and the annular portion 41a is inserted into the cylinder 19 so as to project from the operating portion 6. The operation handle 41 has an operation lever 42 for controlling the supply of the hydraulic oil O to the cylinder 19. Reference numeral 43 is an annular mounting member, which is fitted into the cylinder 19. The lower end of the rope 4 is connected to a support piece 45 fixed to the mounting member 43 with a screw 44.

Next, the operation of the casting dam folding device will be described.

First, the casting dam folding device is lowered to the vicinity of the casting molding A, and its operating levers 11 and 13 are inserted into the gap between the casting molding A and the feeder C which are connected by the weir B. At this time, the operating levers 11 and 13 are in pressure contact with the cast product A or the riser C, respectively. Then, by operating the operating lever 42, the hydraulic oil O is flown into the cylinder 19 through the conduit 25, and the piston rod 23 is pushed out in the arrow direction (see FIG. 2), so that the space between the operating levers 11 and 13 is increased. spread. Actuating lever 11,1
When 3 spreads, the gap between the cast molded product A and the riser C spreads around the portion of the weir B, so that the portion of the weir B is broken and the weir folding work is performed.

Since the support shaft 33 moves in the long diameter direction in the long holes 29, 29, it is not difficult to swing the operating levers 11, 13.

In this embodiment, the hydraulic source unit 5 is movable together with the moving member 2, but it can be fixed.

Next, an embodiment of the second invention will be described with reference to FIG.

In this embodiment, the hydraulic power source unit 5 is fixed. The conduits 24, 25 are composed of main conduits 51, 53 connected to the hydraulic power source unit 5 and slave conduits 55, 57 connected to the cylinder 19 (corresponding to an operating portion of the present invention). The main conduits 51, 53 have a required number of connection ports 59, 59, ....
The auxiliary conduits 55 and 57 can be detachably connected to the connection port 59 via a connection fitting 61. The other connection port 59 to which the connection fitting 61 is not connected is closed.

(Effects of the Invention) A casting dam weaving apparatus according to the present invention includes a hydraulic power source unit and an operating portion that is operated by the hydraulic power source unit.
The operating portion comprises a pair of operating levers and a hydraulic piston / cylinder mechanism, and the hydraulic source unit operates the hydraulic piston / cylinder mechanism to swing the pair of operating levers. In the above, the pair of actuating levers are pivotally supported with respect to each other at their roots, the cylinder is fixed to the one actuating lever, and the piston rod is connected to the other actuating lever, and the hydraulic piston The pair of actuating levers can be swung in opposite directions by moving the cylinder mechanism back and forth, and an operating handle is installed on the operating lever to which the cylinder is fixed, and an operating lever for controlling the operating lever is provided on the operating handle. Is provided to separate the hydraulic pressure source unit from the operating unit and Since the unit and the cylinder part of the piston / cylinder mechanism of the operating part are connected by a flexible conduit of an appropriate length, only the operating part is moved to a desired position separately from the hydraulic power source unit. Therefore, the work efficiency of the weir folding work can be improved.

Further, in the casting dam folding device according to the present invention, the cylinder is fixed to one of the operating levers, the piston rod is connected to the other operating lever, and the pair of operating levers are connected to each other by advancing and retracting the hydraulic piston / cylinder mechanism. Since they can swing in opposite directions, the pair of actuating levers can swivel quickly.

Further, the casting dam-folding device according to the present invention makes it possible to swing the pair of actuating levers in opposite directions, so that the dam-folding work can be performed both when the actuating lever is expanded and when the actuating lever is closed. Is what you can do. Therefore, it is possible to cope with the case where the distance between the cast molded product and the feeder is extremely narrow.

Further, in the casting dam folding device according to the present invention, the conduit connecting the cylinder part of the operating part and the hydraulic pressure source unit is composed of a main conduit connected to the hydraulic pressure source unit and a slave conduit connected to the cylinder. If the required number of connection ports for detachably inserting the sub-conduit into the main conduit is provided, it is possible to easily replace the operating part, so it is easy to select an operating part of different size according to the purpose. In addition, it is possible to easily deal with the case where the operating part is damaged.

Further, in the casting dam folding device according to the present invention, if the hydraulic power source unit is movable along a rail and the operating portion is hung from the rail, the operating portion can be easily transported. It is easy to use above.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of an embodiment of a weir folding device for casting according to the first invention, FIG. 2 is an enlarged sectional view taken along line II-II in FIG. 1, and FIG. It is a front view of the Example of the weir folding device for casting concerning the invention. 5 …… Hydraulic source unit 6 …… Actuating part 11,13 …… Actuating lever 15 …… Axis 19,21 …… Hydraulic piston / cylinder mechanism (19 …… Cylinder, 21 …… Piston) 24,25 …… Conduit 51 , 53 …… Main conduit 55,57 …… Slave conduit

Claims (5)

[Claims] 1. A hydraulic pressure source unit and an operating portion which is operated by the hydraulic pressure source unit, wherein the operating portion comprises a pair of operating levers and a hydraulic piston / cylinder mechanism,
In a casting dam folding device in which the hydraulic piston / cylinder mechanism is operated by the hydraulic power source unit to swing the pair of operating levers, the pair of operating levers pivotally support each other at respective root portions. In addition, the cylinder is fixed to the one operating lever and the piston rod is connected to the other operating lever, and the pair of operating levers can be swung in opposite directions by advancing and retracting the hydraulic piston / cylinder mechanism. An operating handle is installed on an operating lever to which the cylinder is fixed, and an operating lever for controlling the operating lever is provided on the operating handle, the hydraulic power source unit is independent of the operating portion, and the hydraulic power source unit and Length between the piston part of the working part and the cylinder part of the cylinder mechanism Casting weir folding apparatus is characterized in that is connected by a flexible conduit. 2. The weir folding device for casting according to claim 1, wherein the operating portion is movable and the hydraulic power source unit is fixed. 3. The conduit comprises a main conduit connected to the hydraulic power source unit and a slave conduit connected to the cylinder, and a connection port for detachably inserting the slave conduit into the main conduit is required. The weir folding device for casting according to claim 2, wherein a plurality of weir folding devices are provided. 4. The casting dam folding device according to claim 1, wherein the operating portion and the hydraulic pressure source unit are movable. 5. The casting weir folding device according to claim 4, wherein the hydraulic power source unit is movable along a rail, and the operating portion is suspended from the rail. .