CN107570913B - A kind of processing technology of tin cream - Google Patents
A kind of processing technology of tin cream Download PDFInfo
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- CN107570913B CN107570913B CN201710918969.0A CN201710918969A CN107570913B CN 107570913 B CN107570913 B CN 107570913B CN 201710918969 A CN201710918969 A CN 201710918969A CN 107570913 B CN107570913 B CN 107570913B
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Abstract
The invention discloses a kind of processing technologys of tin cream in tin cream manufacture field; including solder flux configuration, welding powder configuration, mixing step; mixing device is set up in mixing step; mixing is carried out by mixing device; in the process using external vacuum and internal inert gas shielding, mixing of milling is carried out by abrasive material mechanism and mixing mechanism, so that solder powder even particle distribution in solder(ing) paste; multiple control is carried out to solder(ing) paste process, so that molding solder(ing) paste better quality.
Description
Technical field
The present invention relates to tin cream manufacture fields, and in particular to a kind of processing technology of tin cream.
Background technique
Solder(ing) paste is applied to electronic product machining field, is a kind of welding material of key.Solder(ing) paste is mainly by solder
The paste stabilized mixture of the compositions such as powder, scaling powder, scaling powder mainly include activator, thixotropic agent, solvent etc., and solder(ing) paste is in table
Cementation element is played in the mounting technology of face and promotes solder, removes oxide, trace impurity and adsorption layer, and protection surface prevents
Re-oxidation, the effects of forming firm metallurgical bonding.Solder-Paste Printing is surface-pasted first procedure of SMT, it is affected
The techniques such as subsequent patch, reflow welding, cleaning, test, and directly decide the reliability of product.
Tin cream need under cryogenic could the long period preservation, before tin cream takes out use under cryogenic conditions
It needs to rise again under air-proof condition and is allowed to reach balance with room temperature, because tin cream has hygroscopicity in temperature-rise period, be exposed to
Moisture expansion can be absorbed by rising again in air, and water evaporates in tin cream and blows a large amount of generations that will cause tin sweat(ing).In addition, due to tin
Cream has two kinds of main components of metal and scaling powder, and metal component specific gravity is bigger to cause tin cream to make in tin cream to sinking
Keep various composition uniform with that must be stirred.Tin cream also needs to guarantee that solder powder particle size distribution is uniform in process,
It avoids influencing printing, point note and welding effect in use.
Summary of the invention
It is uneven to solve solder powder particle size distribution in tin cream the invention is intended to provide a kind of processing technology of tin cream
The problem of.
In order to achieve the above objectives, basic technology scheme of the invention is as follows: a kind of processing technology of tin cream, including solder flux are matched
Set, welding powder configuration, mixing step, mixing the following steps are included:
A, mixing device is set up, cabinet is set, solder flux case, motor, welding powder case, cabinet inside is set side by side in enclosure top
Liang Ge abrasive material mechanism and a mixing mechanism are set, and abrasive material mechanism includes abrasive material channel mould, and the middle part of abrasive material channel mould is equipped with circular
First groove, abrasive material channel mould lower inside wall are equipped with the first feed well of annular, and bottom wall is equipped with whirlpool on the inside of abrasive material channel mould
The ripple protrusion of type, the outside of ripple protrusion are equipped with the first blow tank of annular, and the first blow tank is communicated with the first discharge nozzle；The
The first cylindrical mill platform is rotatably connected in one groove, the top of the first mill platform is equipped with biasing post, and the lower part of the first mill platform is set
There is the first radial charging by-path, the first charging main stem, the first charging by-path connection first are equipped in the middle part of the lower end of the first mill platform
Feed well and the first charging main stem, the bottom end of the first mill platform are meshed with ripple protrusion；Mixing mechanism includes mixing channel mould, mixing
The middle part of channel mould is equipped with circular second groove, and the second groove upper inner wall is equipped with the second feed well of annular, mixing tank for coating colors
The bottom inner portion of mould is equipped with the first radial discharging channel, also is provided with ripple protrusion, the wave of swirl type on the inside of mixing channel mould on bottom wall
The outside of line protrusion is equipped with the second blow tank of annular, and the first discharging channel is connected to the second blow tank；Rotation connects in second groove
It is connected to the second cylindrical mill platform, the top of the second mill platform also is provided with biasing post, and the top of the second mill platform is equipped with radial second
By-path is fed, the inside of the second mill platform is equipped with the second charging main stem, and the second charging by-path is connected to the second feed well and the second charging
Main stem, the first discharge nozzle are connected to the second feed well；The output end of biasing post and motor is connected, in Liang Ge abrasive material mechanism
First feed well is connected to solder flux case, welding powder case respectively；
B, by mixing device mixing, starting motor driven first grinds platform and the second mill platform rotation carries out abrasive material and mixing,
Control motor output speeds make the first mill platform and second grind the revolving speed of platform as 100 ~ 150r/min；
C, the solder(ing) paste mixed is vacuum-packed and saves in 0 ~ 10 DEG C of environment by cryopreservation.
The principle and advantage of this programme are: when practical application, cabinet as main body supporting structure to solder flux case, welding powder case,
The offers supports such as motor, abrasive material mechanism, mixing mechanism, Liang Ge abrasive material mechanism are respectively used to milling for welding powder and solder flux.First is recessed
Slot and the first mill platform are cooperatively formed and are milled, the first charging by-path cooperation on the first annular feed well and the first mill platform from side to
Continue to add solder flux or welding powder into the first mill platform, avoids generating interference, the ripple of swirl type with the swing rod on top and biasing post
Protrusion, which can gradually grind outward the welding powder at middle part, solder flux etc. under the milling between mill platform and groove, to be sent, and ripple protrusion is outer
Solder flux after milling, welding powder, solder(ing) paste etc. can be collected convenient for discharging by the annular blow tank of side.When practical application, lead to
Cross the rotation of motor driven biasing post, biasing post rotation makes to grind platform to be rotated in groove, and solder flux, welding powder pass through the first feed well, the
One charging by-path, the first charging main stem enter between the first mill platform and the first groove, by ripple protrusion to the first mill platform and the
Welding powder, solder flux between one groove are milled, and the welding powder, solder flux after milling are entered by the first blow tank, the first discharge nozzle
In the second feed well on mixing mechanism.Welding powder, solder flux enter the second charging by-path and the second charging master by the second feed well
Road is entered between the second mill platform and the second groove by the second charging main stem, is mixed under the milling of the second mill platform and the second groove
Conjunction is formed uniformly solder(ing) paste.
The advantages of this programme, is: 1, carrying out repeatedly milling respectively to welding powder, solder flux, then carry out mixing and mill, pass through
Gyrate ripple protrusion is rolled, so that solder(ing) paste even particle size, is evenly distributed；2, it is fed using lateral annular,
It carries out continuing charging while not interfering the first mill platform, the second mill platform operating, without external opening, guarantees solder(ing) paste opposite
It is processed in the environment of sealing, better quality.
Preferred embodiment one, as a kind of improvement of basic scheme, in the fixed nitrogen gas tank in the upper end of motor, nitrogen in step A
It is connected to two escape pipes on tank, the feed pipe being connected to the first feed well is set on cabinet, is connected on solder flux case, welding powder case
Discharge nozzle is connected to escape pipe, feed pipe with discharge nozzle by triple valve, air outlet valve is arranged on escape pipe.It is lazy by being arranged
Property gas source for abrasive material mechanism provide inert gas, being passed through inert gas from the first feed well can mill in solder flux, welding powder
Inert gas shielding is carried out during the entire process of mixing, external environment is avoided to impact the quality of solder flux, welding powder, avoids welding
Agent, welding powder dampness conglomeration cause particle uneven, while being passed through the remnants that can accumulate to device inside by inert gas
Solder flux, welding powder, solder(ing) paste etc. carry out purging cleaning, avoid accumulating agglomeration influence device operating in the device, pass through triple valve energy
The feeding switching for enough controlling inert gas, solder flux and welding powder, the mobility of welding powder, solder flux can be improved by inert gas, is kept away
Exempt to block.
Preferred embodiment two, a kind of preferably one improvement, in step A between the first mill platform and the first groove,
It is tightly connected between second mill platform and the second groove by bearing and sealing ring.It is arranged in this way so that abrasive material mechanism and mixing mechanism
Inside forms closed environment, is not easily susceptible to the influence of external environment and causes quality to the mixture of welding powder, solder flux and the two
On adverse effect, while can be improved the behavior in service of abrasive material mechanism and mixing mechanism, reduce equipment attrition bring impurity.
Vacuum pump, vacuum pump and cabinet is arranged in chassis bottom in preferred embodiment three, preferably two a kind of improvement
Inside is connected to, and controlling the vacuum degree in cabinet by vacuum pump in step B is -2atm.By vacuum device to cabinet inside
Vacuumize process is carried out, vacuum environment is constructed in cabinet inside, avoids in solder(ing) paste manufacturing process by moisture, the oxygen in air
The influence of gas etc. and there are quality problems, avoid abrasive material mechanism, mixing mechanism etc. from being oxidized under air environment, corrode generate shadow
Ring the impurity of solder(ing) paste quality.
Preferred embodiment four, a kind of preferably three improvement, it is 3atm that the air pressure in escape pipe is controlled in step B.
Enable nitrogen there are enough air pressures to blow welding powder, solder flux forward when entering the first feed well in this way, can guarantee opposite grinding
Cleaning inside material mechanism, mixing mechanism.
Preferred embodiment five, a kind of preferably four improvement, the first discharging channel is arranged in step A it is V-shaped, first
Discharging channel low side is connected with drainage conduit, is equipped with settling tank below mixing channel mould, drainage conduit is connected to settling tank.V-shaped setting
First discharging channel enables the mixed solder(ing) paste squeezed out from the second blow tank to collect and enter from trend drainage conduit
In settling tank, settling tank contains mixed solder(ing) paste for collecting, so that the inert gas in solder(ing) paste is separated with solder(ing) paste.
Preferred embodiment six, preferably five a kind of improvement, top and vacuum device in step A in settling tank
Between be connected to exhaust tube, exhaust tube is connected to nitrogen gas tank.Setting can will be in settling tank by vacuum pump and exhaust tube in this way
Nitrogen, which detaches, to be recovered in nitrogen gas tank, and nitrogen is recycled, higher to resource utilization.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Specific embodiment
Below by specific embodiment, the present invention is described in further detail:
Appended drawing reference in Figure of description includes: that vacuum pump 1, settling tank 2, cabinet 3, second feed by-path 4, first go out
Hopper 5, feed pipe 6, bearing 7, triple valve 8, discharge nozzle 9, first grind platform 10, biasing post 11, solder flux case 12, escape pipe 13, electricity
Machine 14, nitrogen gas tank 15, crank 16, air outlet valve 17, swing rod 18, first feed by-path 19, welding powder case 20, the first feed well 21, mill
Hopper mould 22, second grinds platform 23, exhaust tube 24, the second feed well 25, the second blow tank 26, the first discharging channel 27.
A kind of processing technology of tin cream, including solder flux configuration, welding powder configuration, mixing step, mixing the following steps are included:
A, mixing device is set up, as shown in Figure 1, setting cabinet 3, is set side by side solder flux case 12, motor at the top of cabinet 3
14, welding powder case 20 is arranged Liang Ge abrasive material mechanism inside cabinet 3 and a mixing mechanism, abrasive material mechanism includes abrasive material channel mould 22, mill
The middle part of hopper mould 22 is equipped with circular first groove, and 22 lower inside wall of abrasive material channel mould is equipped with the first feed well of annular
21,22 inside bottom wall of abrasive material channel mould is equipped with the ripple protrusion of swirl type, and the outside of ripple protrusion is equipped with the first discharging of annular
Slot 5, the first blow tank 5 are communicated with the first discharge nozzle 9；It is rotatably connected to the first cylindrical mill platform 10 in first groove, first
The top for grinding platform 10 is equipped with biasing post 11, and the lower part of the first mill platform 10 is equipped with the first radial charging by-path 19, the first mill platform 10
Lower end in the middle part of be equipped with the first charging main stem, the first charging first feed well 21 of the connection of by-path 19 feeds main stem with first, first
The bottom end of mill platform 10 is meshed with ripple protrusion；Mixing mechanism includes mixing channel mould, and the middle part of mixing channel mould is equipped with circular the
Two grooves, the second groove upper inner wall are equipped with the second feed well 25 of annular, and the bottom inner portion of mixing channel mould is equipped with radial
The first discharging channel 27, the outside of the ripple protrusion, ripple protrusion that also are provided with swirl type on the inside of mixing channel mould on bottom wall is equipped with ring
Second blow tank 26 of shape, the first discharging channel 27 are connected to the second blow tank 26；Cylinder is rotatably connected in second groove
Second mill platform 23, the top of the second mill platform 23 also are provided with biasing post 11, and the top of the second mill platform 23 is equipped with the second radial charging
By-path 4, the inside of the second mill platform 23 are equipped with the second charging main stem, the second charging second feed well 25 of the connection of by-path 4 and second into
Expect that main stem, the first discharge nozzle 9 are connected to the second feed well 25；Biasing post 11 is connect with the output end of motor 14, two are ground
The first feed well 21 in material mechanism is connected to solder flux case 12, welding powder case 20 respectively；
B, by mixing device mixing, the first mill platform 10 of starting motor 14 driving and the second mill rotation of platform 23 carry out abrasive material and
Mixing, control motor 14 export revolving speed and the revolving speed of the first mill platform 10 and the second mill platform 23 are made to be 130r/min；
C, the solder(ing) paste mixed is vacuum-packed and saves in 0 ~ 10 DEG C of environment by cryopreservation.
In the present embodiment, when practical application, connect on the fixed nitrogen gas tank 15 in the upper end of motor 14, nitrogen gas tank 15 in step A
Lead to two escape pipes 13, the feed pipe 6 being connected to the first feed well 21 is set on cabinet 3, on solder flux case 12, welding powder case 20
It is connected to discharge nozzle 9, escape pipe 13, feed pipe 6 are connected to discharge nozzle 9 by triple valve 8, air outlet valve is set on escape pipe 13
17.Connected between the first mill platform 10 and the first groove, between the second mill platform 23 and the second groove by bearing 7 and sealing ring sealing
It connects, vacuum pump 1 is set in 3 bottom of cabinet, is connected to inside vacuum pump 1 and cabinet 3.First discharging channel 27 is arranged it is V-shaped, first
27 low side of discharging channel is connected with drainage conduit, is equipped with settling tank 2 below mixing channel mould, drainage conduit is connected to settling tank 2, in settling tank
Exhaust tube 24 is connected between 2 top and vacuum device, exhaust tube 24 is connected to nitrogen gas tank 15.Pass through vacuum pump 1 in step B
Controlling the vacuum degree in cabinet 3 is -2atm, and controlling the air pressure in escape pipe 13 is 3atm.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and/or characteristic are herein in scheme
It does not describe excessively.It should be pointed out that for those skilled in the art, without departing from the structure of the invention, also
Several modifications and improvements can be made, these also should be considered as protection scope of the present invention, these all will not influence of the invention real
The effect and patent practicability applied.The scope of protection required by this application should be based on the content of the claims, specification
In the records such as specific embodiment can be used for explaining the content of claim.
Claims (7)
1. a kind of processing technology of tin cream, including solder flux configuration, welding powder configuration, mixing step, it is characterised in that: the mixing packet
Include following steps:
A, mixing device is set up, cabinet is set, solder flux case, motor, welding powder case, cabinet inside setting is set side by side in enclosure top
Liang Ge abrasive material mechanism and a mixing mechanism, abrasive material mechanism include abrasive material channel mould, and the middle part of abrasive material channel mould is equipped with circular first
Groove, abrasive material channel mould lower inside wall are equipped with the first feed well of annular, and bottom wall is equipped with swirl type on the inside of abrasive material channel mould
Ripple protrusion, the outside of ripple protrusion are equipped with the first blow tank of annular, and the first blow tank is communicated with the first discharge nozzle；Described
The first cylindrical mill platform is rotatably connected in one groove, the top of the first mill platform is equipped with biasing post, and the lower part of the first mill platform is set
There is the first radial charging by-path, the first charging main stem, the first charging by-path connection first are equipped in the middle part of the lower end of the first mill platform
Feed well and the first charging main stem, the bottom end of the first mill platform are meshed with ripple protrusion；The mixing mechanism includes mixing channel mould,
The middle part of mixing channel mould is equipped with circular second groove, and the second groove upper inner wall is equipped with the second feed well of annular, mixes
The bottom inner portion of hopper mould is equipped with the first radial discharging channel, and the ripple for also being provided with swirl type on the inside of mixing channel mould on bottom wall is convex
It rises, the outside of ripple protrusion is equipped with the second blow tank of annular, and the first discharging channel is connected to the second blow tank；Turn in second groove
Dynamic to be connected with the second cylindrical mill platform, the top of the second mill platform also is provided with biasing post, and the top of the second mill platform is equipped with radial
Second charging by-path, the inside of the second mill platform are equipped with the second charging main stem, and the second charging by-path is connected to the second feed well and second
Main stem is fed, first discharge nozzle is connected to the second feed well；The output end of biasing post and motor is connected, two abrasive materials
The first feed well in mechanism is connected to solder flux case, welding powder case respectively；
B, by mixing device mixing, starting motor driven first grinds platform and the second mill platform rotation carries out abrasive material and mixing, control
Motor output speeds make the first mill platform and second grind the revolving speed of platform as 130r/min；
C, the solder(ing) paste mixed is vacuum-packed and saves in 0~10 DEG C of environment by cryopreservation.
2. the processing technology of tin cream according to claim 1, it is characterised in that: solid in the upper end of motor in the step A
Determine nitrogen gas tank, is connected to two escape pipes on nitrogen gas tank, the feed pipe being connected to the first feed well is set on cabinet, in solder flux
It is connected to discharge nozzle on case, welding powder case, escape pipe, feed pipe are connected to discharge nozzle by triple valve, are provided on escape pipe
Air valve.
3. the processing technology of tin cream according to claim 2, it is characterised in that: in the first mill platform and the in the step A
It is tightly connected between one groove, between the second mill platform and the second groove by bearing and sealing ring.
4. the processing technology of tin cream according to claim 3, it is characterised in that: vacuum pump, vacuum is arranged in chassis bottom
Pump is connected to cabinet inside.
5. the processing technology of tin cream according to claim 4, it is characterised in that: controlled in escape pipe in the step B
Air pressure is 3atm.
6. the processing technology of tin cream according to claim 5, it is characterised in that: set the first discharging channel in the step A
Set V-shaped, the first discharging channel low side is connected with drainage conduit, and settling tank is equipped with below mixing channel mould, and drainage conduit is connected to settling tank.
7. the processing technology of tin cream according to claim 5, it is characterised in that: on the top of settling tank in the step A
Exhaust tube is connected between vacuum device, exhaust tube is connected to nitrogen gas tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710918969.0A CN107570913B (en) | 2017-09-30 | 2017-09-30 | A kind of processing technology of tin cream |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710918969.0A CN107570913B (en) | 2017-09-30 | 2017-09-30 | A kind of processing technology of tin cream |
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| CN107570913A CN107570913A (en) | 2018-01-12 |
| CN107570913B true CN107570913B (en) | 2019-11-12 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110355498B (en) * | 2019-07-22 | 2021-04-13 | 深圳市亿铖达工业有限公司 | Manufacturing method of solder paste for laser |
| CN114669914B (en) * | 2022-05-07 | 2022-12-16 | 深圳市同方电子新材料有限公司 | Preparation equipment of energy-saving low-temperature lead-free soldering paste |
| CN114799392B (en) * | 2022-06-13 | 2023-06-02 | 重庆科技学院 | Electromagnetic pulse heating-based secondary processing method and device for tin column for electronic packaging |
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| CN206492462U (en) * | 2017-02-09 | 2017-09-15 | 东莞市三禾电子材料有限公司 | A kind of tin cream stirrer |
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| CN203872939U (en) * | 2013-12-14 | 2014-10-15 | 周伯雅 | Composite plant powder preparation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2882792Y (en) * | 2004-07-21 | 2007-03-28 | 王魁章 | Blade type safety, high effective and energy saving integrated fine pulverizer |
| CN104174315A (en) * | 2014-05-05 | 2014-12-03 | 江苏博迁新材料有限公司 | Production technology and mixed emulsion device for improving stability of soldering flux for soldering paste |
| CN205627745U (en) * | 2016-05-23 | 2016-10-12 | 广东狮子涂料有限公司 | Coating is thrown materials grinding and is mixed integral type equipment |
| CN106140433A (en) * | 2016-07-29 | 2016-11-23 | 天津市欣跃涂料有限公司 | A kind of powdery paints automatic machining device |
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