JPS5884664A - Method and device for casting of barlike body of small diameter - Google Patents

Abstract

PURPOSE:To cast barlike bodies of a small diameter surely by pressing a crucible contg. molten metal to the bottom surface of a mold then turning over both crucible and mold and the molten metal into cavity. CONSTITUTION:A crucible 16 contg. molten metal M is pressed to the bottom end of a mold 11, that is, the end face having a sprue 12a by means of a crucible presser 17 in tight contact therewith. When the mold 11 and the crucible 16 are rotated by revolving a holizontal shaft 13, the molten metal M in the crucible 16 flows into cavity 12 by gravity. Right before or after this, that is, at the optimum timing for suction when the axial centers of the cavity 12 come again in a perpendicular direction, a limit switch 18 is tripped by a limit switch actuator 19. Then, a solenoid valve 26 opens and the inside of the cavity 12 is evacuated by a vacuum tank 28, by which the molten metal M is run quickly in the cavity 12 by overcoming the viscosity and surface tension thereof up to a filter 24.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention involves injecting a metal bath of 1lJ (hereinafter referred to simply as molten metal) into a small diameter chiyabity provided in a mold. Casting method for casting and equipment suitable for carrying out the method (with respect to λ).

Recently, for example, in the M contact area, self-dissolution has become more and more effective.
1% of requests for a longer vinegar treatment have increased.

In order to manufacture a long bar of this exact length, it is conceivable to form it by rolling from an ingot, but the diameter of the ingot can be changed from 500 to 600+++i+%, for example, to 2 to 3 mm. In order to make it thin, it must be rolled several dozen times, which increases the cost.
It is impossible because Furthermore, pressure waxing cannot naturally be applied to materials that are hard and have poor speed.

Conventionally, the narrow return of this mallet was used as a mantlet. However, in this case, because it is a thin rod, the heat capacity of the entire hot water is small, and it is easy to cool and solidify, so it can be used inside a wide cavity. It was difficult to obtain a long fishing rod that could be ignored.

Therefore, the 1,171 people who filed this application not only covered the molten metal, but also
We have previously proposed a method of making the rods longer by injecting them into the fatJB cavity using external pressure. In this method, for example, as shown in Figure 41,
The cavities 2 of the mold 1 are aligned almost vertically, bath water is injected from the upper end of the cavities 2, and the molten metal is sucked by a vacuum pump 4 connected to the 'F end of the mold 1 via piping 3. Mold by

By the way, in this case, since the molten metal must be injected within a short time of ITIJ after the molten metal is cooled and solidified as described in 111, the molten metal must be quickly supplied (strained) with +6 to the molten metal. In addition, it was found that the appropriate timing for vacuum suction is when the bath water has entered the cavity 2F'. On the other hand, if it was too slow, the molten metal would cool down and solidify, making it impossible to obtain the desired length, which often resulted in gloss.

This invention (well, considering these points as well, it is an improvement on the technology that maintains the system mentioned above). 1. A method for casting a rod-shaped body with a small diameter that can be kept constant over a period of time;

Hereinafter, regarding one embodiment of the cast tA pupil of the present invention, 42
This will be explained with reference to FIGS. Regarding the casting method, by explaining the casting theory 'lJt, 1. I'm sure it will be clear, so I'll omit the explanation.

In the figure, reference numeral 11 denotes a mold, and within this mold 11 there is provided a ramie 12 along the axis of the mold 11 and having openings 12a, 12b on both sides in the axial direction. The 10,000 openings 12a of the Yayabity 12 are gates (hereinafter referred to as -guchi 12aE?&guchi). In addition, this 'J-shaped 11 is rotatably supported on a support base 14 by a horizontal axis 13°13 which intersects with its axis (a), and when the molten metal M is not injected into the cavity 12, the sprue of the cavity 12 is In this state, the crucible holding frame 15 is attached to the 'F4 part of the mold 11.
This crucible holding frame 15 may be mounted on a horizontal shaft 13.13. Further, the bottom of the crucible holding frame 15 has a screw (
A crucible holder (suppressing means) for pressing the opening 16a of the collar 16, which moves up and down depending on the mechanism, against the lower end surface of the mold 11.
17 are in use.

As a result, the mold 11 and the crucible 16 rotate integrally (
When the crucible 16 is turned over, the molten metal M in the crucible 16 is injected into the cavity 12 from the sprue 128. Note that the horizontal @ 13.13 may be rotated by a drive source such as a motor, or may be rotated manually (zNO).
8 is stored, and the corresponding limit switch hit 19! It is stored on the outer periphery of 1# type 11,
These limit switch 18 and limit switch striker 19 constitute a timing device. The limit switch 18 is connected to the support base 1 as shown in FIG.
4 □□□ Medium length, medium length, T-shaped cross section extending in the same direction! '#20
It is fixed by a bolt 21 inserted into the hole, and the position can be adjusted by this. and,
This position adjustment mechanism allows the limit switch 18 to be adjusted)
The mold 11 and the crucible 16 are inverted and the operation is made at an optimal time before or immediately after the IU when the axis of the cavity 12 is vertically aligned. In other words, crucible 1
The crucible 16 is operated when the bath water M in the crucible 6 slightly flows into the cavity 12 and a sufficient amount of the bath water M is supplied from the inside of the crucible 16. In this case, the limit switch 18 is set to the position Jul, but the limit switch strike 19 may be set to fg, [14], or both the limit switch 18 and the limit switch strike 19 may be set to the position control. good.

On the other hand, the vessel 22 is attached to the bolt 2 on the upper surface of the mold 11.
It is fixed by 3. A filter 24 is attached to the end of this vessel 22, and this filter 24 covers the opening 12b of the cavity 12.This filter 24 prevents the r6 hot water M from leaking from the cavity 12. It is also used to contain and remove the splash generated from the bath water M, and is made by combining metal filters, refractory filters, etc. In addition, the vessel 22 is connected to an electromagnetic filter via a pipe 25 having flexibility 2. valve 26
and vacuum suction means 27 are installed in order from the vessel 22 to the vessel 11. As shown in FIG. 4, the t4Lm square 26 is opened by a limit switch IB. Further, the vacuum suction means 27 is connected to a vacuum tank 28 and a vacuum pump 29 which are installed on the ship from 26 solenoid valves.
It has been constructed. The vacuum cleaner 28 quickly brings the inside of the cavity 12 into a vacuum state, and maintains the vacuum state smoothly. It is for maintaining the water, and it is more than enough for the total of 4 acids in Vessel 22 and Piping 25.

When casting a small-diameter solid body using the above-mentioned cone 1 cone 2, first, the crucible 16 containing the molten metal M is placed on the F-face of the mold 11, that is, the sprue 1 with the crucible holder 17.
Make a buried honey layer on the end face with 2a. Next, the horizontal shaft 13 is rotated to rotate the mold 11 and the six pots 16.

As the rotation progresses, M (mM) in the crucible 16 flows into the cavity 12 by its own force. The limit switch 18 is activated by the limit switch striker 19 at the optimum timing.

Then, the solenoid valve 26 opens and the inside of the cavity 12
Tank 28 (unfortunately empty), the bath water M moves through the middle tabby 12 against its viscosity and longitudinal tension and reaches the filter 24.
Since molten metal M is not supplied to the bath water from inside the crucible to the bath water, the molten metal M cannot be transferred in time.

Note that the mold 11 is stopped when the axis of the cavity 12 is aligned with the vertical direction. By this, the self-M of the bathtub M,
40 can be used most effectively.

Note that a delay timer may be used as the timing device d (in this case, for example, the slow sail timer is set to operate at the same time as the horizontal drive source of 1 $13 is activated, and a constant 1 A delay timer may be set to open the electromagnetic valve 26 immediately before the mold 11 starts to turn 2 and the shaft of the cavity 12 aligns with the vertical direction.

Also, although the vacuum tank 28 is not necessarily required, by installing the vacuum tank 28, the inside of the cavity 12 can be quickly converted to the JIc nitride type 1 method, so a longer rod-shaped body can be used. It can be cast, and the vacuum pump 29 can have a small capacity.

In addition, if the g25 is made of a rigid material and set so that the rotational moment of the horizontal 4Q1113 is balanced, the mold 11, crucible 16, and vacuum tank 2
Rotation of up to 8 mag. becomes 6 easy, and they can be rotated by hand or with a small motor.

As explained above, according to this cutoff, the upper end (m and ′F
Using the vI type 2, which has a small-diameter cavity opened at the end face, the mold is inverted while pressing the crucible against the lower end face of the mold, and the lower end of the cavity 1lJl is returned to the inverted state.
The molten metal is poured into the cavity at a certain period of time when the molten metal is poured slightly into the cavity. Moreover, at this time, a sufficient amount of molten metal is supplied from the crucible, so that the molten metal can be quickly and reliably injected into the cavity. In addition, since the molten metal collects at the upper end of the mold in the inverted state, it is possible to use common white melons in rows more effectively, and when pouring the molten metal into the zara, the molten metal will not splatter. It has the effect of being safe without any

[Brief explanation of drawings]

Figure 1 is a diagram illustrating the above-mentioned proposal for easy injection of household baths for all people. ・Figure J32 is an electric result 21I of the casting ifi device according to this invention! 1. Figure 3 is a vertical cross-sectional view showing the outline of the 1st hole, Figure 3 is the inside of the 3rd place in Figure 2, and Figure 4 is the wiring diagram of the limit switch, αυ TM, and both valves. 11... Mold, 12... Cavity,
12a...Opening (gate), 12b...
Opening, 14... Support stand, 16... Crucible, 16a... Opening, 17... Crucible holder (suppressing means), 18... Limit switch,
19... Limit switch hit, 27...
・・Jie<1 Suction means, M...(Metal) Bath ◎ Mitsubishi Metals Co., Ltd.)゛tI Rito 2, Figure 1

Claims (1)

[Claims] 1. A small-diameter cavity (12) with flanged openings on the top, one side, and the bottom end surface is used. Relative(
With this pressure reduced, the cavity (
12) A deposit method in which 9 is poured into a metal bath at p-1, and a crucible (16) containing Xu Xuan Yang (M) is pressed onto the lower end surface of the mold (11); This rutsu 1 (16)
A method for casting a small-diameter bank-like wood, characterized by inverting the mold together with the end mold (11), and then injecting hot water (M) into the cavity (12). 2. The sleeve center of the above-mentioned capital (12) is the above-mentioned - type (11)
When the pressure becomes almost vertical due to the reversal of 3. A method for casting a small diameter rod-shaped body. 3. A small diameter cavity (12
), a support stand (14) that supports the mold (11) in a reversible manner, and the mold (11)
The crucible (16) attached to this crucible (16)
2 Press the top of the mold (11) to open the crucible (16) (16a).
12) 1 in the f-thousand side opening (12a)! ! ! The pressing means (17) for bending and the suction l of the upper six pitches (12)! 1], and the vacuum suction means (27) is connected to the opening (12b) of the mold (11).
Timing device 1 (1
8, 19) A casting device for a rod-shaped body with a diameter of 1, which is characterized by a caster. 4. The timing device position (18, 19) includes a limit switch (18) provided on either one of the support base (14) and the upper 6R2'llJ type (11);
and a limit switch hitter (19) provided on the other side, and at least one of the limit switch (18) and the limit switch hitter (19) is provided to adjust the position 1 to the center. Claims II
'#J remains of the small-diameter relapsed body described in item 3.