JP2588533Y2 - Pouring equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pouring device for pouring hot water into a mold which is intermittently transferred in one direction.

[0002]

2. Description of the Related Art As shown in FIGS. 5 and 6, a mold B formed by a molding machine is intermittently transferred in one direction by a mold transfer device in a certain stroke, and a pouring hole provided on one side of the transfer path. A casting apparatus in which the ladle D supported by the pouring ramp 12 is tilted by the tilting of the pouring ramp 12 of the apparatus A to pour the hot water into the mold B is conventionally known.

In the above casting apparatus, the position of the sprue b of the mold B formed by the molding machine differs depending on the type of the casting, so that the ladle D is moved back and forth with respect to the mold B at the time of casting. The position of the spout of ladle D is adjusted according to the position.

In the casting apparatus, since the mold B is moved in one direction in accordance with the molding cycle of the molding machine, in the case of a large cast product having a large casting amount, the mold B is transferred during casting. In this case, the ladle D is moved at substantially the same speed in the same direction at the same time as the transfer of the mold B, and the casting operation is continued.

Since the ladle D is a super-heavy object weighing several hundred kg, the ladle D is tilted during casting, the ladle D is moved forward and backward by adjusting the position of the pouring spout, and the ladle D is formed by additional casting. The pan D is moved in the mold moving direction by a hydraulic cylinder. These hydraulic cylinders are controlled by operating levers of a manual switching valve, and each of the levers is provided in a cabin 19 that moves integrally with the truck 2 of the pouring device A.

[0006]

In the conventional pouring apparatus, as described above, the hydraulic cylinder is controlled by the manual switching valve, and the manual switching valve controls the oil flow starting point at the spool opening degree. Since the maximum flow point is very close, even a small movement of the spool greatly changes the flow rate, making it difficult to smoothly control the operating speed of the hydraulic cylinder.

For this reason, a shock is applied to the ladle at the start and stop of the operation of the hydraulic cylinder, and there is a disadvantage that the position adjustment of the ladle and the pouring operation cannot be performed smoothly.

[0008] This invention solves the above-mentioned disadvantages, and makes it possible to smoothly control the operating speed of a hydraulic cylinder for tilting or moving a ladle so that pouring operation and position adjustment operation can be performed smoothly. It is a technical issue.

[0009]

In order to solve the above-mentioned problems, in the present invention, the mold can be moved in one direction to a side of a mold transfer path which is intermittently transferred by a constant stroke in a mold transfer direction. A carriage is provided on the carriage, which is moved in a direction perpendicular to the mold transfer direction by the operation of the front-rear position adjustment cylinder, and the mold is transferred on the carriage by the operation of the left-right position adjustment cylinder. A table lifter that is moved in the direction is provided, and a pouring ramp that is tilted toward the mold by the operation of the pouring cylinder is provided on the lifting table of the table lifter, and a ladle supported by the pouring ramp is provided. In the pouring device in which the hot water is poured into the mold by the inclination of the cylinder, two passages communicating with the front-rear position adjusting cylinder, the left-right position adjusting cylinder and the pouring cylinder are supplied. Than is adopted the configuration using the manual proportional control valve as a switching valve for switching into the passage and the tank passage.

[0010]

As described above, since the manual proportional control valve is used as the switching valve for controlling the operation of the hydraulic cylinder, the flow rate of the manual proportional control valve varies proportionally from the slight opening to the full opening of the spool. The operating speed of each cylinder can be controlled smoothly.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIGS. 1 to 3 show details of the pouring apparatus A shown in FIGS. 5 and 6. FIG. As shown in the drawing, a rail 1 extending in the transfer direction of the mold B is laid on the floor surface on one side of the transfer path of the mold B, and a wheel 3 provided on a lower portion of the bogie 2 is placed on the rail 1. Have been.

The carriage 2 is moved along the rail 1 by the operation of the hydraulic motor 4. A plurality of guide rods 5 that are long in a direction crossing the rail 1 are provided on an upper surface of the carriage 2, and a transfer table 6 is movably supported along the guide rods 5. The transfer table 6 is moved along the guide rod 5 by the operation of the front-rear position adjusting cylinder 7.

A guide rod 8 parallel to the rail 1 is provided on the upper surface of the transfer table 6, and a table lifter 9 is movably supported along the guide rod 8. The table lifter 9 is moved in the moving direction of the mold B by the action of the left / right position adjusting cylinder 10.

The table lifter 9 has an elevating table 11 which is moved up and down by the operation of an elevating cylinder (not shown). On the elevating table 11, a pouring table 12 is provided.

[0016] Pouring inclined base 12 is linked to a pair of side frames 13 by a plurality of connecting members 14, pivot bracket for supporting the arm members d ₁ provided on both sides of the ladle D on the upper surface of the side frame 13 1
5 is fixed.

The front upper portions of the pair of side frames 13 are rotatably connected via a shaft 17 to a pair of support frames 16 fixed to the upper surface of the lifting table 11.

The pouring ramp 12 is tilted about a shaft 17 by the operation of a pair of pouring cylinders 18 provided inside each side frame 13.

[0019] In the pouring device A having the above-described configuration, by supporting the arm members d ₁ ladle D at receiving brackets 15 of the pouring inclined base 12, increasing the dynamic and longitudinal position of the lifting table 11 of the table lifter 9 performs adjusting the position of the spout d ₂ of the ladle D for sprue b of the mold B by the movement of the transfer table 6 by the operation of the adjustment cylinder 7, after the position adjustment, pouring the operation of pouring cylinder 18 Insert the inclined table 12 into the mold B
The Toward by tilting performs its pouring ramp 12 allowed to flow from the interior of the pouring hot water port d ₂ of ladle D to tilt with it casting operations.

This casting operation is performed while the mold B is stopped. If the mold B starts moving during the casting, the table lifter 9 is moved along the guide rod 8 by the operation of the left / right position adjusting cylinder 10. The ladle D is moved to follow the movement of the mold B in the casting state.

FIG. 4 shows a hydraulic motor 4 for moving the carriage 2.
And a hydraulic circuit for operating the various cylinders 7, 10, 18.

Two passages 4a and 4b connected to the oil suction port and the oil discharge port of the hydraulic motor 4, two passages 7a and 7b connected to the front and rear position adjustment cylinder 7, and a left and right position adjustment cylinder 10 And two passages 18a and 18b connected to the pouring cylinder 18 are connected to an oil supply passage 22 and a tank 23 connected to a pump 21 via a manual proportional control valve 20. Connected to the connected tank passage 24.

The manual proportional control valve 20 includes an inlet valve block 2
5, 4 switching valve blocks 26 and end plate 2
7 The inlet valve block 25 has a relief valve 28,
An unload valve 29 and a pressure compensation mechanism 30 are provided.

The four switching valve blocks 26 have a three-position four-way manual switching valve 31, and the two passages 4a and 4b of the hydraulic motor 4 and the various cylinders 7 and 10 are connected to the A and B ports of each switching valve 31. , 18 are connected. The refueling passage 22 is connected to the P port of each switching valve 31, and the tank passage 24 is connected to the T port.

This manual proportional control valve 20 has a valve passage flow rate that is proportional to the displacement of a spool that is moved by operating a lever.
It is a known device having a feature that it is not affected by the magnitude of the load.

By using such a proportional control valve 20 in a pouring device, the lever can be operated without relying on the hydraulic motor 4 and the various cylinders 7, 10, and 18. The operating speed can be controlled smoothly. Therefore, the controllability of the hydraulic motor 4 and the various cylinders 7, 10, and 18 immediately before starting or stopping is very smooth, and the impact on the ladle D during the position adjustment of the ladle D and the pouring operation is prevented. In addition, the pouring operation can be performed safely.

[0027]

As described above, in the pouring apparatus according to the present invention, the operation of the cylinder for tilting the ladle, the cylinder for moving the ladle back and forth, and the cylinder for moving the ladle right and left by using the manual proportionality valve. Since the speed can be controlled smoothly, the pouring operation can be performed safely without giving an impact to the ladle during the position adjusting operation of the ladle and the pouring operation.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a pouring device according to the present invention.

FIG. 2 is a side view of the above.

FIG. 3 is a cross-sectional plan view of the above.

FIG. 4 is a hydraulic circuit diagram of the above.

FIG. 5 is a plan view of a casting apparatus.

FIG. 6 is a side view of the above.

[Explanation of symbols]

 B Mold 2 Carriage 6 Transfer stand 7 Cylinder for front / rear position adjustment 9 Table lifter 10 Cylinder for left / right position adjustment 11 Elevating table 12 Pouring inclined table 18 Pouring cylinder 7a, 7b, 10a, 10b, 18a, 18b Passage 22 Lubrication passage 24 tank passage

Claims (1)

(57) [Scope of request for utility model registration] 1. A trolley movable in a mold transfer direction is provided on one side of a transfer path of a mold which is intermittently transferred in one direction by a constant stroke, and the mold is moved on the trolley by a cylinder for adjusting the front-rear position. A transfer table that is moved in a direction perpendicular to the transfer direction of the mold is provided, and a table lifter that is moved in the mold transfer direction by the operation of the left and right position adjustment cylinder is provided on the transfer table. In a pouring device that is provided with a pouring ramp that is tilted toward the mold by the operation of the pouring cylinder, and that pours hot water into the mold by tilting a ladle supported by the pouring ramp.
A manual proportional control valve is used as a switching valve for switching two passages communicating with the front / rear position adjusting cylinder, the left / right position adjusting cylinder, and the pouring cylinder between an oil supply passage and a tank passage. Pouring equipment.