Be used in the cooling system on the evolution machine of cut crystal
Technical field
The utility model relates to a kind of evolution machine that is used for cut crystal, especially, relates to the cooling system on the evolution machine that is used in cut crystal.
Background technology
The multi-thread evolution machine of diamond wire cutting technique is the process technology of more advanced in the world little side's ingot, its principle be through the diamond wire of a high-speed motion (diamond line) to the high-speed cutting that rubs of hard brittle materials such as semiconductor, thereby reach cutting effect.In whole cutting process; Diamond wire is through the guiding of a lot of guide rollers; Diamond wire uniformly on reel, is walked line mechanism through directive wheel, cutting main shaft etc. and formed the wire system of walking that can come and go, on main shaft, form bracing cable cutting net; And hard brittle materials such as semiconductor to be processed are placed on and lock on the cutting bed; Cutting head is realized the feeding cutting through transmission mechanism, can hard brittle materials such as semiconductor once be cut into tens little side's ingots simultaneously, and the multi-thread cutting technique of diamond wire is compared with the multi-thread cutting technique of traditional mortar has the efficient height; Production capacity advantages of higher, the multi-thread cutting technique of diamond wire evolution are to adopt hard brittle material cutting technique such as semiconductor the most widely at present in the world.
The multi-thread evolution machine of traditional diamond wire comprises frame, pallet apparatus, cutting head apparatus for feeding, drive unit, a plurality of guide roller usually at least and is wound in diamond wire, the cooling system on the said guide roller.Referring to sketch map 1; The cooling system of tradition diamond wire multi-thread evolution machine is the cooling fluid among the cooling fluid container cavity A of base to be extracted out through pump B flow to flusher D through piping again after filtering through filtering tank C and treat cooled region and cool off; Cooling fluid flow back among the cooling fluid container cavity A more then; In other words, this is a kind of closed loop (circulation) refrigerating mode, and a large amount of hard brittle material powder that therefore when cutting, produced for example silica flour can be blended in the cooling fluid.Though have filter bag in the filtering tank, its filtering function can not be very strong, if because filtering function is too strong can't work with regard to making flowing of cooling fluid be obstructed widely, so filter bag effect in actual use is very little.Like this, silica flour can be got to be sprayed at once more on the silicon heavy stone used as an anchor through pump and also be back to together in the cooling fluid container cavity with cooling fluid in the cutting process, and in this process, silica flour can adhere on diamond wire and the device drives wheel.A large amount of adhesion hardening of silica flour make to cause the rising of evolution machine abnormal broken line, cost and the reduction of qualification rate, a real big problem for can not be ignored by device drives wheel cisco unity malfunction.
More particularly; When using this circulating cooling system; Its cooling fluid is the mixed liquor of water for industrial use and cutting fluid; And this mixed liquor is circulation for several times between cooling fluid container cavity, filtering tank and pipeline, and promptly cooling fluid is used with being recycled, so in practical application, be full of a large amount of silicon bits in the cooling fluid.These silicon bits just are easy to pipeline obstruction like this, is cleaned pipeline with regard to spending manpower.In addition, be splashed to the silicon bits of cutting on the main shaft it can not be turned round, the most serious be consume diamond wire.When silica flour very seriously interferes with the motion of diamond wire; Diamond wire needs rewiring with regard to being easy to break off; Those of ordinary skill in the art should know if rewiring then just has the consume of 300-500m basically to diamond wire; Even the market price with current diamond wire is calculated for 2.5 yuan/meter, owing to the consume cost that causes that often breaks also is quite huge number.In addition; In fact; Carry out circulating utilization with this cooling system, cooling fluid is changed with just needing after 3 times basically once more, the mixed liquor that uses in the prior art by water and cutting fluid according to a certain percentage (98: 2) mix; In actual the use, cut silicon ingot (850 * a 850 * 275mm
3) to need 3.86 kilograms model at least be GREATOP
RALPHA COOL GP-1 cutting fluid or about 2.3 kilograms model be MB
RThe TP718 cutting fluid, calculate also quite expensive greatly about 37 yuan/kilogram, 60 yuan/kilogram with the current market valency respectively.
Therefore, a kind of new cooling system is provided, to avoid above-described shortcoming, the real problem that presses for solution for the association area dealer at present.
The utility model content
For realizing above-mentioned purpose; The utility model provides the cooling system on a kind of evolution machine that is used in cut crystal; It comprises that resource of water supply, Jiang Shui are sprayed onto the spray unit in zone to be cooled, the water inlet tube connector between said resource of water supply and said spray unit, together collector unit of the wastewater collection that will flow down from said zone to be cooled, water channel that waste water is discharged; And the drainage connecting pipe between said collector unit and said water channel; Wherein, water is discharged through said resource of water supply, water inlet tube connector, spray unit, collector unit and from said water channel successively.
Cooling system on this evolution machine that is applied to cut crystal newly; Change the circulating cooling system (being the closed loop cooling system) of routine into the open loop type cooling system, thereby promptly water is finally discharged this evolution machine and is accomplished the cooling procedure of treating cooled region successively through resource of water supply, water inlet tube connector, spray unit, collector unit, drainage connecting pipe and water channel.
Owing to adopted the open loop type cooling system; The cooling system of the utility model no longer needs the cooling fluid container cavity; Cooling fluid can be passed through the water inlet tube connector and spray unit is sprayed on the hard brittle material to be cut, and waste liquid directly is discharged in the sewer through collector unit and drainage connecting pipe again.In this process, a large amount of hard brittle material powder that produces during cutting for example silica flour will directly wash away from pipeline with water, and can not adhere on diamond wire and the device drives wheel.
More excellent ground, said wafer are silicon, germanium, quartz, quartz glass or one of them person of pottery, and described evolution machine is the multi-thread evolution machine of diamond wire.
Selectively, said resource of water supply is tap water supply water source or water for industrial use resource of water supply.
Said more excellently spray unit is arranged at the top periphery and/or the top center in said zone to be cooled.
More preferably; The spray unit that is arranged at top, said zone to be cooled periphery is peripheral spray unit; Said peripheral spray unit comprises jet pipe pipeline and nozzle; Wherein, said jet pipe pipeline is the square jet pipe that is made up of four jet pipes, and the compartment of terrain is provided with a plurality of nozzles on said square jet pipe pipeline.
More preferably; Four bights of said square jet pipe have the inlet opening respectively; Said water inlet tube connector has two branch roads corresponding to said inlet opening, and each road of wherein said two branch roads connects a hole of three-way pipe, and two other hole of said three-way pipe is connected with said inlet opening respectively.
More excellent ground, the spray unit that is arranged at said regional top center to be cooled is central spray unit, said central spray unit is the spraying head type structure.
More preferably, the two ends of said central spray unit have two inlet openings, and said water inlet tube connector has two branch roads corresponding to said inlet opening, wherein each branch road with said inlet opening each be connected.
More excellent ground also is provided with flowmeter on the said water inlet tube connector.
More excellent ground, the flow of said water is 500-6000L/h, preferred 500-1200L/h.
More excellent ground also is provided with flow control valve on the said water inlet tube connector, and it is regulated for automatic or manual.
More excellent ground also is provided with Pressure gauge on the said water inlet tube connector.
More excellent ground, said cooling system also comprise the control module of the physical parameter that is used to control water, and said physical parameter comprises flow and one of them person of pressure at least.
The invention also discloses the cooling system on a kind of evolution machine that is used in cut crystal, it is characterized in that, its mainly by resource of water supply, flusher, water inlet tube connector, collect discharger and control device is formed; Wherein said water inlet tube connector is provided with between said resource of water supply and said flusher; Said collection discharger is arranged in the below housing of evolution machine; Said control device is used to control the physical parameter of water, and said physical parameter comprises flow, one of them person of pressure parameter at least; Water is sprayed onto zone to be cooled from said resource of water supply via said water inlet tube connector and through said flusher, is flowed to said collection discharger and discharges said evolution machine from said zone to be cooled again.
Wherein, said wafer is silicon, germanium, quartz, quartz glass or one of them person of pottery, and described evolution machine is the multi-thread evolution machine of diamond wire.
Preferably, said resource of water supply is the water for industrial use resource of water supply.
More excellent ground, said flusher is arranged at the top periphery and/or the top center in said zone to be cooled.
More preferably; The flusher that is arranged at top, said zone to be cooled periphery is peripheral flusher; Said peripheral flusher comprises jet pipe pipeline and nozzle; Wherein, said jet pipe pipeline is the square jet pipe that is made up of four jet pipes, and the compartment of terrain is provided with a plurality of nozzles on said square jet pipe pipeline.
More excellent ground; Four bights of said square jet pipe have the inlet opening respectively; Said water inlet tube connector has two branch roads corresponding to said inlet opening, and each road of wherein said two branch roads connects a hole of three-way pipe, and two other hole of said three-way pipe is connected with said inlet opening respectively.
More excellent ground, the flusher that is arranged at said regional top center to be cooled is central flusher, said central flusher is the spraying head type structure.
More preferably, the two ends of said central flusher have two inlet openings, and said water inlet tube connector has two branch roads corresponding to said inlet opening, wherein each branch road with said inlet opening each be connected.
Through utilizing the cooling system of the utility model, the hard brittle material that the cutting of diamond wire evolution machine obtains the for example qualification rate of silicon rod can reach more than 98%.
As stated,, therefore save members such as cooling fluid container cavity because the cooling system of the utility model adopts the open loop type refrigerating mode, and owing to use cheap water for industrial use in the cooling system of the utility model, so greatly reduce cost; In addition, the probability that broken string appears in diamond wire becomes very low, and the cutting main shaft can be owing to by the silica flour of splash and stuck stall.Therefore the utility model diamond wire evolution machine can improve the operation ratio of cutting efficiency and production capacity, raising equipment greatly.
Description of drawings
Fig. 1 is the sketch map of the cooling system of evolution machine in the prior art;
Fig. 2 is the sketch map of the cooling system of the utility model evolution machine;
Fig. 3 is the front plan view of the cooling system of the utility model evolution machine, has wherein removed and the irrelevant member of cooling system;
Fig. 4 is the exploded view of spray unit of the cooling system of the utility model evolution machine;
Fig. 5 is jet pipe pipeline and the profile of nozzle in the cooling system of the utility model evolution machine.
The specific embodiment
Referring to Fig. 2 and Fig. 3; The cooling system of the utility model is to be used to cut on the diamond wire evolution machine of hard brittle material 1, the sprinkler head that this evolution machine generally includes frame 2, be arranged at the pallet apparatus 2 that is used to carry hard brittle material 1 on the frame, be arranged at the cutting head apparatus for feeding that is used to cut hard brittle material on the frame, the drive unit that is used to drive the cutting head apparatus for feeding, a plurality of guide roller and be wound in diamond wire on the guide roller, cooling fluid supply system, be connected with the cooling fluid supply system.
Fig. 2 is the sketch map of the cooling system of the utility model, and wherein this cooling system 10 comprises with lower member, comprises resource of water supply 11, spray unit 12, water inlet tube connector 13, collector unit 14 and water channel 15 and drainage connecting pipe 16.Wherein, resource of water supply 11 can select for use tap water supply water source, water for industrial use resource of water supply or factory to reclaim water water source etc.More excellent ground, resource of water supply is selected the water for industrial use resource of water supply for use.
In conjunction with Fig. 3; The water inlet connection pipeline section that water inlet tube connector 13 is processed by rigidity such as steel is connected pipeline section with flexible water inlet of processing such as plastic cement and combines, and wherein, is installed on flowmeter 17, flow control valve 18 and Pressure gauge 19 on the metal water inlet connection pipeline section; The farad dish is fixed with each other respectively with up and down for the ring flange of this flowmeter 17 through two sections; Flexible water inlet connects pipeline section and is divided into four branch roads, particularly, details below in conjunction with spray unit 12.In the utility model, flow control valve 18 is manually, yet, be appreciated that it also can be by automatic control.Those skilled in the art should be appreciated that also into the pipeline section of water tube connector 13 is that rigidity or flexible characteristic are not essential, and flowmeter 17, flow control valve 18 and Pressure gauge 19 neither be essential.
Fig. 4 shows the exploded view of spray unit 12, and spray unit 12 has peripheral spray unit 121 and central spray unit 122, and it is arranged at top periphery and top center that zone to be cooled is a silicon ingot respectively.Wherein, Periphery spray unit 121 comprises jet pipe pipeline 123 and nozzle 124, and jet pipe pipeline 123 is the square jet pipes that are made up of four jet pipes, and nozzle 124 equally spaced is provided with on square jet pipe pipeline 123; And should be corresponding with the spacing of silicon chip to be cut at interval; Perhaps in other words this makes nozzle 124 corresponding each other with diamond wire at interval, thereby when cutting operation, the silicon bits in silica flour on diamond wire bits and the stria that on silicon ingot, cut out by diamond wire also are easy to be cleaned.Four bights of square jet pipe have inlet opening 125 respectively; Water inlet tube connector 13 has two branch roads 131,132 corresponding to inlet opening 125; Wherein each road of two branch roads is connected to a hole of three-way pipe 133, and two other hole of three-way pipe 133 is connected with the inlet opening 125 in square jet pipe bight respectively.Central authorities' spray unit 122 is the spraying head type structure; Promptly be similar to the structure of the spraying head type shower nozzle that shower uses; Particularly; The two ends of this central authorities' spray unit 122 have two inlet openings 126, and water inlet tube connector 13 has two branch roads 133,134 corresponding to inlet opening 126, and wherein each branch road is connected with each inlet opening 126.
Wherein, the above-mentioned embodiment about spray unit 121 only is a kind of preferable mode, selectively, also can only select peripheral spray unit 121 for use or only select central spray unit 122 for use.In addition; Also can adopt the integral net formula spray unit that is similar to the diamond gauze, central spray unit is amplified to several jet pipes that same again horizontal plane on the basis that can cover whole machining area or peripheral spray unit is provided with right-angled intersection, but owing in the utility model, there is not impressed pressure to increase device; Promptly; Only depend on the hydraulic pressure of resource of water supply, so, when adopting whole net formula spray unit, also may there be the problem of insufficient pressure.Selectively, can be the water inlet tube connector be divided into four the tunnel, but be divided into more multichannel as six the tunnel; Four tunnel being connected respectively on the inlet opening in four bights of peripheral spray unit wherein; Two-way wherein is connected on the inlet opening at two ends of central spray unit, also can the water inlet tube connector be divided into and be less than four the tunnel, like two-way or three tunnel; Principle is identical, repeats no more at this.
Wherein, Cooling system in the preferred embodiments of the utility model adopts the rapidoprint of silicon ingot as the evolution machine, and what it will be understood by those skilled in the art that other all can be used as the rapidoprint of evolution machine such as materials such as germanium, quartz, quartz glass or potteries.
Collector unit 14 is placed with silicon ingot for being positioned at the cavity bottom the evolution engine housing on the evolution machine, this collector unit 14 is positioned at the below of silicon ingot just.Be formed with the inclined plane in this collector unit 14, its bottom also is provided with leakage fluid dram, selectively, thereby can on this leakage fluid dram, set up filter member the bits of the silicon in the waste water is filtered in advance.When spray unit 12 is sprayed onto water on the silicon ingot, water will carry particle such as silicon bits and converge and flow into this collector unit 14 inside.In field of machining, this collector unit is readily appreciated that to those skilled in the art, so repeat no more at this.
In the utility model, water channel 15 is sewer, and drainage connecting pipe 16 is communicated with the hole of collector unit 14 with water channel 15.More excellent ground filters the bits of the silicon in the waste water thereby can set up filter member in the side that drainage connecting pipe is connected to water channel 15 in advance.More preferably, thus unified waste water and the Unified Treatment of collecting of wastewater collection treatment system can be set in the other end unification of sewer.It should be noted that about unification and install the emphasis that the wastewater collection treatment system is not the utility model, so, repeat no more at this.
In addition; Those skilled in the art should be appreciated that above-mentioned collector unit 14 and drainage connecting pipe 16 can also directly substitute by collecting discharger; Promptly have the device of collecting accommodation function and discharge function concurrently; In other words; Collection discharger described here comprises the jockey of collector unit, drainage connecting pipe and water channel but is not limited to this device, for example, this collection discharger in addition can be designed to the leakage fluid dram of above-mentioned collector unit aimed at below sewer and dispense drainage connecting pipe.
In the another kind of embodiment of the utility model; Parameter such as pressure, flow can directly be come control automatically by control module; This control module is the synthesis of computer terminal, pressure-control valve, flow control valve etc.; The number pressure and the flow number of pressure-control valve and flow control valve can be read in the computer terminal, also can come to write number pressure and flow number etc. to computer by the operator and control the physical parameter of water in the pipeline with this.
Bonded diamond line evolution machine is introduced the course of work of the cooling system of the utility model:
Set up earlier and cuts gauze, the workpiece that glues is placed on special-purpose silicon heavy stone used as an anchor feeding cart through fork truck, feeding cart is with after lathe is connected; The silicon heavy stone used as an anchor is advanced on the cutting chamber location-plate, and manual locking silicon heavy stone used as an anchor pallet fixture confirms that each guided wheel slot distance of cutting and technical parameter are correct; Set silicon heavy stone used as an anchor cutting-height, open the outlet valve (perhaps opening the flow control valve on the water tube connector 13 into) of water for industrial use resource of water supply 11, water for industrial use is sprayed on the silicon heavy stone used as an anchor through water inlet tube connector 13 upward pressure tables 19, flowmeter 17 and spray unit 12; Be discharged in the water channel 15 through drainage connecting pipe 16 when will have the wastewater collection of silicon bits through the collector unit in the evolution machine base 14, start cut mode, cutting head, retractable cable wheel drive servomotor drive steel wire and carry out reciprocal cutting movement; The feed servo motor moves cutting head through decelerator driving ball-screw and carries out feeding, thereby carries out the work piece cut state, and cutting head returns reference point automatically after the completion to be cut; The expression cutting finishes; Valve-off with after lathe is connected, is pulled out to feeding cart on the feeding cart with workpiece; Through fork truck workpiece is delivered to the workpiece cleaning district; Clean, censorship detected between validating the car after cleaning finished, and got into next procedure at last.
Than traditional cooling system; The cooling system of the utility model has omitted devices such as cooling fluid container cavity, the pump housing, filtering tank and filter bag; Need not use relatively more expensive cutting fluid yet, in addition, adopt the unidirectional open loop type of cooling; So not only make the cost of whole cooling system reduce greatly, thereby and washed the silicon bits that get off by water and can not be back on the processing work again or be splashed to also can in collector unit, not pile up in large quantities in the cutting main shaft and influence the unimpeded of pipeline.Especially prevent diamond wire owing to the accumulation of the silicon bits of cutting in the slit break off aspect; The utility model has overcome those skilled in the art's prejudice; Promptly; Those skilled in the art generally all can think water cleaning and cooling silicon ingot certainly not as the mixed liquor of water and cutting fluid, and cutting fluid has the viscosity bigger than water, is easier to silicon considered to be worth doing than water stick on the diamond wire.After adopting the utility model, the outage of diamond wire is very low.Improve cutting efficiency when therefore the cooling system of the utility model reduces cost greatly, overcome various shortcoming of the prior art effectively.