Background technology
Along with the progress of science and technology, integrated circuit moves towards high density, high speed and the trend of small size, along with the raising of chip integration, requirement for encapsulation technology is stricter, namely ball bar array encapsulation (BallGridArray) technology is so a kind of application a kind of surface mount encapsulation technology on the integrated, utilize many small metal ball bodies, normally tin ball, by various chip set on circuit boards.
Due to manufactured tin ball quality, such as shape, size all can have influence on the yield of chip on IC processing procedure, for technical staff, fixed-area being arranged, more tin ball is one of major subjects of progressing greatly of tin ball manufacturing technology, in other words, the out of roundness of tin ball and size are the pointer parameters of tin ball fine ratio of product, in addition, also to take into account the speed of tin ball output in the fabrication process, can cost benefit be taken into account.
Therefore, how a large amount of manufacture tin ball while maintain the high fine ratio of product of tin ball, be current industry problem urgently to be resolved hurrily.In addition, for the manufacture of nonmetal spheroid, also in the face of same problem.
Utility model content
For solving the variety of problems of prior art, the utility model provides a kind of spheroid building mortion, can increase fine ratio of product and the precision of metal ball body, allows the metal ball body of institute's output have the feature of small size and high out of roundness.
Spheroid building mortion of the present utility model comprises: smelting furnace, has accommodation space and heating module, and this heating module is heated to the fusing point of this material in order to the material being opposite to this accommodation space, and this smelting furnace has the perforate of this material of discharging melting; Vibration module, has stopper section, and this vibration module, in order to produce the first vibration frequency, makes this stopper section move back and forth according to this first vibration frequency, to close or to open this perforate; Detecting module, in order to detect the liquid level of this material, and sends the detection signal of this liquid level corresponding; Administration module, in order to receive this detection signal, and send the first corresponding control signal to this vibration module according to this detection signal, wherein, this vibration module receives this first control signal, and produce the second vibration frequency according to this first control signal, make this stopper section move back and forth according to this second vibration frequency, to close or to open this perforate.
In an embodiment of the present utility model, also comprise the first filler cells, be used to fill the first gas in Gai Rong stove, this first gas is discharged toward this perforate in order to this material of extrusion molten.
In an embodiment of the present utility model, wherein, this first gas is inert gas or nitrogen.
In an embodiment of the present utility model, wherein, this detecting module is the liquid level gauge of the liquid level detecting this material or detects the barometer of this first gas pressure.
In an embodiment of the present utility model, also comprise anti-electrostatic unit, there is the electrostatic body be communicated with this perforate.
In an embodiment of the present utility model, wherein, this electrostatic body person made by diamond.
In an embodiment of the present utility model, also comprise refrigerating module, this refrigerating module comprises the first body and the second body, this first body is connected with this smelting furnace, and there is the first cushion space be communicated with this electrostatic body, this second body is communicated with this first body and has the second cushion space be connected with this first body, and wherein, this second cushion space has liquid nitrogen.
In an embodiment of the present utility model, also comprise the second filler cells, be communicated with this first body, be used to fill the second gas in this first cushion space.
In an embodiment of the present utility model, wherein, the second gas is inert gas or nitrogen.
In an embodiment of the present utility model, also comprise control module, wherein, this administration module, also in order to send the second corresponding control signal according to this detection signal, this control module is in order to control the pressure of this second gas according to this second control signal.
Compared to prior art, spheroid building mortion of the present utility model, when motlten metal makes it be discharged by the perforate of electrostatic body by nitrogen pressurization, back coupling via level of molten metal controls the frequency of vibration module, the discharge rate of motlten metal is allowed to be consistent, and after the electrostatic repulsion that motlten metal produces being added that the surface tension of metal itself and gravity produce metal ball body by anti-electrostatic unit, cooled again after the turning effort that the nitrogen recycling the first cushion space causes metal ball body, fine ratio of product and the precision of metal ball body can be increased, the metal ball body of institute's output is allowed to have the feature of small size and high out of roundness.
Embodiment
By particular specific embodiment, execution mode of the present utility model is described below, the personage being familiar with this skill can understand other advantages of the present utility model and effect easily by content disclosed in the present specification.
Notice, structure, ratio, size etc. that this specification institute accompanying drawings illustrates, content all only in order to coordinate specification to disclose, for the understanding of personage and the reading of being familiar with this skill, and be not used to limit the enforceable qualifications of the utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the utility model can produce and the object that can reach, technology contents that the utility model discloses all should dropped on and obtain in the scope that can contain.Simultaneously, quote in this specification as " on ", " interior ", " outward ", " end " and " one " etc. term, be also only be convenient to describe understand, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the utility model, conjunction is first chatted bright.
Refer to Fig. 1, it is the schematic diagram of spheroid building mortion of the present utility model.As shown in the figure, the utility model provides a kind of spheroid building mortion 100, mainly comprise smelting furnace 1, vibration module 2, detecting module 3 and administration module 4, smelting furnace 1 has accommodation space 10 and heating module (not shown), accommodation space 10 can for placing solid metallic or other nonmetallic substances, and the present embodiment is explained for solid metallic.Described heating module is a kind of electric heating system, fusing point is elevated to by its temperature by this solid metallic of electrified regulation, thus this solid metallic becomes molten state, and smelting furnace 1 still has perforate 11, preferably is the bottom being formed at smelting furnace 1, discharge from perforate 11 for the metal forming molten state, but vibration module 2 has the stopper section 21 that alignment apertures 11 position is arranged, vibration module 2 can produce the first vibration frequency makes stopper section 21 move back and forth up and down, use and close perforate 11 or open perforate 11, allow motlten metal can according to the demand timing preset or quantitative discharge.
Then, detecting module 3 can detect the liquid level of motlten metal, along with smelting furnace 1 discharged gradually by motlten metal, detecting module 3 can send detection signal to administration module 4, administration module 4 sends the first control signal to vibration module 2 according to this detection signal again, vibration module 2 produces the second vibration frequency more accordingly, allows the discharge rate of motlten metal remain certain.
In an embodiment of the present utility model, spheroid building mortion 1 also can comprise the first filler cells 5, first filler cells 5 has the first gas, when solid metallic be heated reach fusing point become motlten metal time, can in the accommodation space 10 of smelting furnace 1, inject this first gas, and this first gas just can extrude this motlten metal and discharges toward perforate 11.The first described gas can be the gas that inert gas or nitrogen etc. not easily produce chemical reaction, in the present embodiment, is that nitrogen injection carries out being pressurised into example and is explained.
In the present embodiment, described detecting module 3, can detect with the liquid level of motlten metal at accommodation space 11, also can detect the nitrogen pressure be injected in accommodation space 11, therefore detecting module 3 can be the liquid level gauge of detecting liquid level or the barometer of detecting nitrogen pressure.Be in barometrical embodiment in detecting module 3, then, when the liquid level of motlten metal reduces along with discharge, the air pressure in accommodation space also can change and allow barometer detect, and produces should the detection signal of atmospheric pressure value thereupon.
In an embodiment of the present utility model, also can comprise anti-electrostatic unit 6, and anti-electrostatic unit 6 has the electrostatic body 61 be communicated with perforate 11, when motlten metal also can pass through electrostatic body 61 by during perforate 11, effect now by anti-electrostatic unit 6 allows motlten metal produce electrostatic effect, adds gravity and the surface tension of motlten metal itself, forms the metal ball body of many, and in order to bear the high temperature of motlten metal, electrostatic body is better can be made up of diamond.
In the present embodiment, spheroid building mortion of the present utility model also can comprise refrigerating module 7, after this metal ball body is formed, then can drop among refrigerating module 7, preferably, refrigerating module 7 comprises the first body 71 and the second body 72, first body 71 is connected with smelting furnace 1, and there is the first cushion space 711 be communicated with electrostatic body 61, second body 72 is communicated with the first body 71 and has the second cushion space 721 be connected with the first body 71, therefore, this Metal Ball is known from experience in succession by the first cushion space 711 and the second cushion space 721.
In the present embodiment, spheroid building mortion 1 also can comprise the second filler cells 8 communicated with the first body 71, second filler cells 8 has the second gas, when this metal ball body is by the first cushion space 711, second filler cells 8 is used to fill this second gas in the first cushion space 711, this second gas can be the gas that inert gas or nitrogen etc. not easily produce chemical reaction, and be nitrogen injection in the present embodiment, nitrogen can make this metal ball body produce turning effort, allow this metal ball body produce spin by this turning effort, and then improve out of roundness.
When this metal ball body is by the first cushion space 711, then can drop into the second cushion space 721, and the second cushion space 721 can there be liquid nitrogen, falls the metal ball body of the second body 72 in order to cooling, allow this metal ball body be formed solid-state.
In an embodiment of the present utility model, also can comprise control module 9, wherein, the detection signal that administration module 4 also can produce according to detecting module 3 sends the second corresponding control signal, control module 9 controls this second gas, i.e. the pressure of described nitrogen according to this second control signal again.
In sum, spheroid building mortion of the present utility model utilizes solid metallic or other nonmetallic substances, reach fusing point through being heated and form molten condition, by liquid level or the nitrogen pressure injected of detecting molten condition material, carry out back coupling to control, vibration module can be maintained do in order to discharge quantitative molten condition material, then produce spheroid by anti-electrostatic unit.In addition, also optionally again by nitrogen or the inert gas generation turning effort of the first body, to improve this spheroid out of roundness, can be cooled through the second body more afterwards, by spheroid building mortion of the present utility model, the sphere diameter of the spheroid of institute's output can reach below 0.1mm, and can maintain high fine ratio of product while a large amount of manufacture.
Above-described embodiment only in order to illustrative principle of the present utility model and effect thereof, but not for limiting the utility model.Any personage haveing the knack of this skill all without prejudice under spirit of the present utility model and category, can modify to above-described embodiment.Therefore rights protection scope of the present utility model, should listed by claims.