JP3200816B2 - Material supply device for semi-solid metal forming machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a material suitable for use in a semi-molten metal forming machine in which a light alloy is heated to a semi-molten state and then pressurized with a punch and a die to flow into a molding die and fill. It relates to a supply device.

[0002]

2. Description of the Related Art In general, a molding method in which a metal material is heated to a semi-molten state and then put into a mold and molded is already known (for example, Japanese Patent Publication No. 2-51703).

In order to adopt such a technology productively, it is necessary to heat a large number of materials one by one one by one, and after the heating is completed, quickly transfer the materials from a conveyor to a die hole before the materials are cooled. In the case of rapidly transferring a material that has been heated and softened to a semi-molten state, there are respective difficulties depending on the transfer means. That is, in this type of molding machine, generally, a turntable and a conveyor are used as transfer means for supplying a billet as a material to a die hole.

[0004]

However, the turntable has an advantage that the material can be placed and transported right above the die hole. However, a large diameter turntable is required to supply a large amount of material. There is a problem that the installation area of the machine is extremely large. In addition, if a conveyor is used, the length of the conveyor can be lengthened to suppress the increase in the machine installation area to a certain extent. Since a pulley having a diameter is provided, a large recess is formed between the conveyor belt and the die hole, and it is difficult to pass through the recess. In other words, it is sufficient to provide a handover plate just to pass through the recess, but an advanced industrial robot such as an articulated robot is required as a means for passing over the handover plate, and the apparatus becomes expensive. However, there is a problem that the time required for the transfer is long, the material is cooled, and the liquid phase ratio is reduced.

[0005]

SUMMARY OF THE INVENTION The present invention maintains the advantages of using such a belt conveyor, while providing an inexpensive device that solves the difficulties of transferring material from the conveyor to the die holes. In a material supply device of a semi-molten metal forming machine, comprising a heating means for heating a billet as a raw material to a semi-molten state, and a transferring means for transferring the heated billet to a molding machine, The means is configured to sequentially transfer the plurality of billets arranged in a row with their end faces upside down, and is bridged from the transfer means to the forming means disposed on the side of the billet. Pressing means for sliding the billet one by one on the transfer plate is provided, and the pressing means is associated with the operation of the transfer means.
It is characterized in that the heating means is provided so as to be retractable with respect to the billet .

[0006]

The billet supplied to the forming means is intermittently fed one by one while a plurality of billets are placed on a transfer means such as a belt conveyor or a turntable and draw a locus consisting of a straight line or a curve. In the course of the transfer, it is heated to a semi-molten state by high frequency heating or other heating means from several steps before reaching the forming means. When the material stops at the final stage of the transfer means, the pressing means is operated, and the material placed on the transfer means is pressed and fed to the molding means.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. In FIG. 1, 1 is a molding machine for semi-molten metal,
It has a forming means 2 and a transfer means 4 for feeding a billet B of a material heated to a semi-molten state with respect to the forming means 2. In this embodiment, the billet B is made of an aluminum alloy containing several percent of silicon, and has a diameter of 75 mm and a height of 6 mm.
It is made in a cylindrical shape of 0 mm. When this is heated to about 560 ° C., a liquid phase ratio of about 45% is obtained.

The press forming the forming means 2 has columns 2b and 2b erected with a bed 2a interposed therebetween, and a ram 2d is supported by a cross member 2c connecting the upper ends of the columns 2b so as to be able to move up and down. . Reference numeral 2e denotes a punch attached to the lower end of the ram 2d. Reference numeral 3 denotes a die supported on the bed 2a, and the die 3 includes a die hole 3a and a cavity 3b cooperating with the punch 2e, and a runner 3c connecting between them. Thus, the billet B heated to a semi-molten state is supplied to the die hole 3a, and the punch 2e
Is lowered and the top surface thereof is strongly pressed, whereby the billet B fluidizes and passes through the runner 3c to fill the cavity 3b.

The transfer means 4 is a chain conveyor in this embodiment, and connects a number of transfer plates 4a by chains 4b and is driven by sprockets 4c. The billet B is mounted on a support 4d provided every other one of the transport plates 4a. The chain conveyor is intermittently driven by a motor (not shown). That is, it is transported at a time by a distance corresponding to two transport plates 4a for one process, and is temporarily stopped at that position.

In the latter half of the chain conveyor, a high-frequency heating device functioning as a heating means 5 for heating the billet B is provided. In this embodiment, four high-frequency coils constituting the heating means 5 are set as one set, and the billet B is provided in four steps before reaching the forming means 2. Then, in relation to the operation of the transfer means 4, the billet B retreats upward during the transfer and descends during the pause to move the billet B on the transfer plate 4a.
Is turned on after covering the outer circumference. Thereafter, when a predetermined time elapses, the power supply is cut off, the high-frequency coil is retracted upward, and the chain conveyor resumes the transfer at substantially the same time.

At the final stage of the transfer means 4, a support plate 4d and the molding means 2 are connected by a transfer plate 4e. When heating by the heating means 5 is completed and the high-frequency coil is retracted upward, At that moment, the pressing means 6 operates. The pressing means 6 comprises a pneumatic cylinder operated by compressed air,
One end of a rod 6 a connected to the internal piston projects toward the transfer means 4. 6c is a push plate attached to the end of the rod 6 a, having an axis parallel to the billet B, and are formed in an arc shape with a more Yaゝlarger radius it. This push by the action of the pneumatic cylinder da plate 6
When c moves forward and presses the billet B toward the forming means 2, the billet B does not deviate from the pressing direction. Reference numeral 6d denotes a drop hole of a billet B provided in the transfer plate 4e. When the billet B pushed by the push plate 6c pushes the transfer plate 4e into the drop hole 6d, the billet B passes therethrough and is lowered. It falls into the die hole 3a. 6e is a push plate 6c
This is a stop plate for preventing the billet B pushed by the above from passing over the drop hole 6d.

Since the molding machine 1 is constructed as described above, the billet B is intermittently transported one step at a time by the transfer means 4 and reaches the side of the molding means when it is heated. It is led to 2. Then, in the process, it is heated to a semi-molten state by the heating means 5, and at the end of the heating, is pushed by the pressing means 6, slides on the transfer plate 4e, and is quickly led to the die hole 3a which is the forming means 2.

In the above-described embodiment, the forming means has a punch on the upper side and a die on the lower side.
It is also possible to reverse this relationship and arrange the punch on the lower side and the die on the upper side.

[0014]

As described above, according to the present invention, since a plurality of billets as materials are transferred by the belt conveyor, a large number of materials can be placed on the transfer means, so that the wasted time in work is reduced. I do. In addition, the area for installing the equipment is small. Further, since the process of grasping and transferring the material with a simple structure using the transfer plate and the pressing means to guide the billet B from the conveyor to the die hole is not required, the transfer from the conveyor to the die hole is performed quickly, The practical effect is remarkable, for example, there is no such a problem that the material is cooled during the transfer and the liquid phase ratio is lowered.

[Brief description of the drawings]

FIG. 1 is a sectional view of a molding die 1. FIG.

FIG. 2 is a sectional view of a main part thereof.

FIG. 3 is a sectional view showing a conventional molding die.

[Explanation of symbols]

 2. Forming means 2e Punch 3a Dice hole 4 Transfer means 5 Heating means 6 Pressing means

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B21K 27/00 B21J 17/02 B22D 18/02

Claims (1)

(57) [Claims] 1. A material supply apparatus for a semi-molten metal forming machine, comprising: heating means for heating a billet as a material to a semi-molten state; and transferring means for transferring the heated billet to a forming machine. A plurality of billets are arranged so as to be sequentially arranged with their end faces upside down, and are successively transported, and a transfer plate wrapped from the transfer means toward the forming means disposed on the side thereof. A pressing means for sliding the billet one by one on the top is provided ,
The heating means is moved relative to the billet in relation to the operation of the step.
A material supply device for a semi-molten metal forming machine that is provided to be retractable .