Background technology
After semiconductor lead frame epoxy packages, have the glue that overflows and remain on terminal pin and fin, need to follow-up remove before zinc-plated clean.Except overflowing, gluing method is mainly chemical solution infusion method (Chemical Deflush), electrolysis (Electrolisis Deflush) and Mechanical Method (Michenical Deflush) at present.Mechanical Method seldom adopts now because the ejection medium adopting can damage base material.Electrolysis is because of decomposition voltage or electric current is too high can cause layering by damage chip, and some serious excessive glue also cannot be removed and is greatly limited.Chemical solution infusion method makes excessive peptization solution or softening loosening by chemical action, again in conjunction with follow-up high-pressure water knife spray, can totally remove thoroughly excessive glue, this method can be suitable for the lead frame after almost various model encapsulation, is the main stream approach of current the sector except the glue that overflows.
At present, nearly all chemical solution infusion method is all manually lead frame to be processed to be loaded in stainless steel magazine with holes off and on, put in soaking compartment and soaked 30 minutes to 1 hour or the longer time, after immersion, pull out, put in tank and clean again, then pull out and place the processing of standby follow-up high-pressure water knife spray; Operating personnel take out manually material loading one by one of material strip, complete whole except the glue process of overflowing through high-pressure water knife spray, air knife drying, electric heating drying and rewinding.Whole process operation is numerous and diverse, and physical demands is large, in processing procedure high temperature, liquid smell and soaking compartment and wash water groove herb liquid and wash water to take out of or overflow the scene of causing be completely water, operating environment extreme difference, has also strengthened liquid loss and wastewater flow rate.Adopt the cantilever running mode as semi-automatic Automatic-rack Line to improve slinging and dropping into of magazine although have in recent years, save to a certain extent artificial muscle power, but because of the long washing time of this process soak time short, in fact do not improve a lot, efficiency there is no raising, taking out of with wastewater flow rate of liquid do not change substantially, yet will manually material loading processing one by one on high-pressure water knife equipment after immersion.
Along with the development of economy and technology, lead frame except the treating capacity of glue of overflowing also increasing, the sector to except the growth requirement of gluing equipment technology of overflowing more and more stronger, in the urgent need to develop joint save labor, obviously improve operating environment, save liquid, save wash water and reduce waste water more efficiently except overflow glue automatic production line, the treatment process that thoroughly changes existing clumsiness and fall behind, makes it to match with follow-up advanced person's electroplating processes technique.The present invention is the deficiency of considering to improve existing technique, designs and develops out a set of glue automatic production line that overflows that removes that chemical solution soaks and high-pressure water knife sprays that integrates.
Summary of the invention
The object of the present invention is to provide a kind of new and effective full-automatic chemical solution to soak (and/or electrolysis) and remove in conjunction with the whole series of high-pressure water knife spray the glue automatic production line that overflows.
The present invention is achieved through the following technical solutions:
Chemical solution soaks except the colloid system that overflows comprises automatic feeding, discharge and linked transmission delivery material strip turns back and moves ahead in soaking compartment, electrolytic cell and rinsing bowl successively, it is characterized in that automatical feeding system comprises that the material strip of material-storing box, material loading platform and air cylinder driven is picked up, pusher and charging gear; In described soaking compartment and the groove of rinsing bowl, divide upper and lower two-layer multiple sprocket wheels that are equipped with near two side, be furnished with stainless steel chain on sprocket wheel, keep at a certain distance away and be connected with some cross bands that are parallel to each other between two chains, spring clip fixing on cross band clamps material strip; Sprocket shaft is fixed on bearing spider, drives cycle operation by frequency conversion adjustable speed motor; Material strip falls into the automatic tangent material loading as high-pressure water knife on the material loading conveyer belt that enters high-pressure water knife in reversing turntable equably by self gravitation.Described in the automatic production line that the excessive glue of semiconductor lead frame encapsulation of the present invention is removed, soaking compartment can be 1,2 or multiple, in different grooves, can adopt heterogeneity except glue or adopt different operating temperatures, make it more effectively coordinate to reach to take into account and remove black ebonite that encapsulation overflows and the optimum efficiency of yellow flexible glue.
The automatic production line that the excessive glue of semiconductor lead frame encapsulation of the present invention is removed, can before or after soaking compartment, increase electrolysis except the glue groove that overflows, the negative or positive electrode of connecting with the mains on the bearing block of both sides sprocket wheel adds stainless steel polar plate to realize electrolysis except the glue function of overflowing as negative pole or positive pole in the middle of the material strip of turning back.
In rinsing bowl, be provided with running water rinsing, going out groove place and be provided with the new water wash of row's nozzle, the water under drip washing enters in groove for the supplementing of washings, and washings are constantly updated discharge.
The automatic production line that the excessive glue of semiconductor lead frame encapsulation of the present invention is removed, reversing turntable changes 90 ° of directions of blanking material strip, fall into the tangent line material loading that conveyer belt directly enters high-pressure water knife, high-pressure water knife can be arranged side by side with infusion system, save occupation of land and easy to operate.
Described high-pressure water knife spray system relies on horizontal direction to deliver material strip around the linked transmission of operation, steel band is fixed on chain strip side plate, fixing spring folder on steel band, spring clip is by exerting pressure and open material loading with the synchronous operated baffle ring of sprocket wheel, leave the automatic closure of baffle ring rear spring clamp and clamp material strip and move ahead, by exerting pressure and make it to open blanking with the synchronous operated baffle ring of sprocket wheel.
Described material loading can adopt with 1,2 or many of rows according to throughput requirements.
Use above-mentioned process and operating procedure except the glue automatic production line that overflows as follows:
Step 1, in place complete equipment, connection, pipe arrangement are installed, debugging is normal.
Step 2, the selected suitable sol solution that removes join in soaking compartment, make its liquid level higher than upper strata sprocket wheel, inject the running water of certain liquid level in rinsing bowl, open heating and transmission system, make solution meet the requirements of technological temperature.
Step 3, pending material strip is packed in material-storing box, regulate feed mechanism to make it just material strip to be shifted onto the opening part of spring clip.Set required soak time and corresponding transmission chain speed according to technological requirement.
After step 4, startup, after the running time of setting, start to have the material strip of having soaked from soaking compartment, to go out groove, open high-pressure water knife spray system.
Step 5, artificial in time to the supplementary pending material strip of material-storing box and in the good material strip of blanking place collection and treatment.
In processing procedure, the circulating filtration of solution can continuous operation or intermittent running, conventionally sets certain hour interval and automatically starts and close filter operation.Rinse bath sprays the water flowing down for supplementing washings.
Soaking compartment in step 2 can be 1,2 or multiple, can select the glue that removes of different performance and temperature in each groove, can regulate the liquid level in different slots to change the time of staying of material strip in different solutions.The discharging opening of each soaking compartment designed higher excessive sprocket wheel height be convenient in material strip with solution fully return to former groove, the solution in different slots can phase mutual interference and pollution yet, has greatly reduced the loss of band liquid, has saved wash water and has reduced waste water.
Material loading in step 3 can adopt on every cross band and hold 1,2 or many with row folding.Of the present invention
Main innovation is to have adopted linked transmission delivery material strip moving ahead except turning back in glue, makes material strip in chemical solution, have enough time of staying.A whole set of production line also comprises to be controlled loading and unloading, temperature, speed, falls the PLC control system that material is reported to the police etc.
The present invention compared with prior art has following advantage:
1, whole chemistry except overflow glue process full automation carry out continuously, saved operating personnel's quantity and muscle power, improved production efficiency and reduced production and labor cost.
2, facility compact, occupation of land less, be connected closely, water-washing method advantages of simple, because the material strip of soaking rear discharging directly enters high-pressure water knife system after simple washing, is connected not delay therebetween automatically, so material strip is because shelving the oxidation producing, without a large amount of washings.Because soaking compartment is without manually coming to operation personally, substantially there is no hot gas and the infringement of liquid smell to human body after adding upper cover and air draft.Immersion and high-pressure water knife are connected the evaporating, emitting, dripping or leaking of liquid or gas of substantially having eliminated liquid and wash water closely automatically in addition, have improved on-the-spot operating environment.
3, the employing of multiple soaking compartments can realize different performance and temperature except glue and electrolysis are except effective combination that the glue that overflows becomes one, reach best except the glue effect of overflowing, meet special technological requirement, this is that traditional handicraft is difficult to or cannot realizes at all.
4, reversing turntable can be arranged side by side with infusion system high-pressure water knife, saves occupation of land and easy to operate.
5, can realize under the condition that does not increase more equipment occupations of land output is increased greatly with the charging simultaneously of the many material strips of row.
6, equipment operating is stable, easy to maintenance, safe and reliable.
7, every processed material strip did not interfere with each other and is immersed in equably in solution through the identical time, and material strip high conformity after treatment can not cause some material strip or local cross the variety of issue that processing or undercuring cause because material strip lap hides.
8, the control program of various Optimization Technology programmings, for user provides multiple choices, also provides interactive user's self-programming function can meet special requirement simultaneously.Various operating procedure conditions and historical data parameter can realize storage and call.
Brief description of the drawings
For the technical scheme of clearer explanation embodiments of the invention or prior art, introduce simply the accompanying drawing of required use in embodiment or description of the Prior Art being done to one below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Drawings attached two width of the present invention, wherein
Fig. 1 is the Facad structure perspective diagram of excessive glue full automatic production line of semiconductor lead frame of the present invention.
Fig. 2 is the side-looking structural representation of the A-A section of accompanying drawing 1.
In accompanying drawing, 1, automatic charging device, 101, material loading platform, 102, material-storing box, 103, material-pulling device, 104, up cylinder, 2, soaking compartment, 3, electrolytic cell, 4, rinse bath, 5, dry up groove, 6, automatic blanking device, 7, reversing turntable (as the automatic charging of high-pressure water knife), 8, high-pressure water knife, 9, material strip, 10, spring clip, 11, cross band, 12, chain.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described: as Figure 1-Figure 2:
Each treatment trough is by two stainless steel chains 12, it organically to be connected together, and realizes function separately and completes and carry delivery circulation.
Automatic charging device is to be made up of material loading platform 101, material-storing box 102, pneumatic material-pulling device 103 and up cylinder 104.Material-pulling device 103 is constantly transferred to material strip and promotes its feed that moves ahead from the bottom of material-storing box 102.
Automatic blanking after infusion system completes enters the automatic charging of high-pressure water knife 8 after reversing turntable changes after 90 ° of directions, further completes high-pressure water knife spray therein, completes except the glue overall process of overflowing.
As shown in Figure 2, in the middle of the both sides chain of each treatment trough, be connected with some cross bands that are parallel to each other 11, on it, be fixed with several spring clips 10, when cross band 11 is turned back forward while advancing with chain 12, the spring clip 10 on it relies on the effect of pneumatic lever to open and picks up material and blanking.
The material strip of material loading can be with row 1,2 or many (being with 2 of rows in Fig. 2), and in the time adopting with many of rows, treating capacity increases.
Described soaking compartment 2, electrolytic cell 3, rinse bath 4, dry up groove 5 top cover can be installed, can prevent electrolyte, the evaporation of lysate, can avoid causing unnecessary waste on the one hand, also makes operating personnel avoid the injury of poisonous steam simultaneously.
Especially, the chain transmission device arranging in described soaking compartment, can stir uniformly the solution in whole soaking compartment, make the chemical solution uniform state in solubility, temperature and concentration all the time in soaking compartment 2, can not spend height and temperature contrast because of local dissolution in groove, cause the decline to the glue solute effect that overflows.
The above; it is only preferably detailed description of the invention of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof; as: adopt other forms of conveyer and other forms of power set, within all should being encompassed in protection scope of the present invention.