CN209281091U - To transfer equipment before a kind of tin cream induced with laser - Google Patents
To transfer equipment before a kind of tin cream induced with laser Download PDFInfo
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- CN209281091U CN209281091U CN201920011870.7U CN201920011870U CN209281091U CN 209281091 U CN209281091 U CN 209281091U CN 201920011870 U CN201920011870 U CN 201920011870U CN 209281091 U CN209281091 U CN 209281091U
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- tin cream
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Abstract
To transfer equipment before a kind of tin cream induced with laser of the utility model, the equipment includes laser, light beam shaping module, optical path adjusting module, tin cream shift module and computer control system, the laser is connected with light beam shaping module, and then optical path adjusting module, and tin cream shift module is located at the lower section of optical path adjusting module.Light beam shaping module includes extender lens, aperture, flat top beam reshaper and spatial light modulator.Optical path adjusting module includes 2-D vibration mirror and f- θ lens meter.The tin cream shift module is made of transparent substrate, tin cream film, fixture, Z axis lifting platform, reception substrate, XYZ precise mobile platform.Computer control system is made of the driver of computer and other equipment.The utility model may be implemented without mask, contactless high-precision tin cream transfer.The production cycle can be greatly shortened, production cost is reduced.
Description
Technical field
The utility model be using before induced with laser to transfer techniques (Laser induced forward transfer,
Abbreviation LIFT) Lai Shixian tin cream transfer technique and equipment, belong to laser application and paste solder printing technical field more particularly to one
To transfer equipment before kind tin cream induced with laser.
Background technique
SMT (Surface Mount Technology) be it is a kind of will be without pin or short leg surface encapsulation component, such as
Resistance, capacitor, transistor, integrated circuit etc. are installed on printed circuit board, and the electricity of electric link is formed by Reflow Soldering
Road load technology.And paste solder printing is then the first step of entire SMT process.Current paste solder printing technology mainly uses
The method of silk-screen printing, and silk-screen printing generally requires different pcb boards to make different silk screens, relative cost is high, week
Phase is long, is not able to satisfy the demand quickly produced on a small scale.
It to transfer techniques (LIFT technology) is a kind of material deposition technique before induced with laser.LIFT technology is by target material
It is applied on transparent substrate in the form of a film in advance, and target material film faced downwards and reception substrate is allowed to keep a spacing
From, allow laser light transparent substrate to be irradiated on target material, and cause the material in regional area transfer.Therefore, LIFT skill
Art is a kind of high precision micro transfer techniques without mask, contactless.
Since LIFT technology is without preparing mask, once being applied in paste solder printing, small-scale production can be greatly shortened
In production cycle, and reduce production cost, be particularly suitable for laboratory research and the small-scale test manufacture of industry.And laser galvanometer
Use, light beam is scanned with the speed of far super mechanical movement, thus meet large-scale production in for production speed
The demand of degree.
Summary of the invention
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts and deficiency provide a kind of tin cream induced with laser
Forward direction transfer equipment.
The utility model is achieved through the following technical solutions:
To transfer equipment, including laser cell, computer control system 14 before a kind of tin cream induced with laser, feature exists
In: it further include tin cream shift module；The computer control system 14 controls the laser beam exits of laser cell and tin cream turns
The movement of shifting formwork block；
The tin cream shift module includes transparent substrate 8, fixture 10, Z axis lifting platform 11, receives substrate 12, the movement of XYZ axis
Platform 13；
The lower surface of the transparent substrate 8 is the concave surface for accommodating tin cream film 9；
The reception substrate 12 and Z axis lifting platform 11 are placed on XYZ axis mobile platform 13, with adjustment receive substrate 12 with
The opposite station of laser beam spot；
The fixture 10 is mounted on Z axis lifting platform 11；The concave surface of transparent substrate 8 downward, and is placed in reception substrate in parallel
12 top, the fixture 10 clamp the edge of transparent substrate 8, and by the carrying of Z axis lifting platform 11, it hangs down above reception substrate 12
Straight elevating movement, to adjust transparent substrate 8 relative to the distance between reception substrate 12.
The laser cell includes laser 1, light beam shaping module, the optical path adjusting module being sequentially connected by an optical path；
The laser 1, light beam shaping module, optical path adjusting module, tin cream shift module are separately connected computer control
System 14.
The light beam shaping module includes the extender lens 2 being sequentially connected by an optical path, aperture 3, flat top beam reshaper 4, sky
Between optical modulator 5；
The optical path adjusting module includes the 2-D vibration mirror 6 being sequentially connected by an optical path, f- θ lens 7.
The concave surface depth for accommodating tin cream film 9 is 20 μm~150 μm.
The reception substrate 12 is pcb board.
To transfer method before a kind of tin cream induced with laser comprising following steps:
Step 1: the circuit drawing of reception substrate 12 to be printed is imported into computer control system 14, computer control system
System 14 plans the scanning route of laser 15, scanning speed according to the position of pad on reception substrate 12 to be printed, and according to each
The geomery selection laser parameter of pad and the parameter of light beam shaping module；
Step 2: according to the thickness of tin cream required in actual production, the transparent substrate 8 of concave surface depth needed for selecting, using scraping
Tin cream is applied in entire concave surface by the method for painting, and tin cream film 9 is formed in concave surface；By 9 faced downwards of tin cream film, then will
Transparent substrate 8 is fixed on the fixture 10 that Z axis lifting platform 11 is connected, adjustment transparent substrate 8 and the distance for receiving substrate 12；
Step 3: before laser pulse emission each time, computer control system 14 is according to route pre-planned, control
The rotation of 2-D vibration mirror 6 processed changes laser beam path；
Step 4: the light beam that laser 1 issues is after light beam shaping module shaping, into saturating by 2-D vibration mirror 6 and f- θ
The optical path adjusting module that mirror 7 forms changes walking backward for optical path by 2-D vibration mirror 6, eventually by focusing on after f- θ lens 7
9 top of tin cream film described in step 2；Laser 15 leads to irradiated site part after being absorbed by tin cream film 9 by transparent substrate 8
Vaporization forms bubble 16 inside tin cream film 9, and as bubble 16 constantly expands, will push unboiled part around
It rushes at and receives substrate 12；And stable bridge architecture 17 is formed between transparent substrate 8 and reception substrate 12；
Step 5: repeating step 3 and step 4 until receiving on substrate 12 between all pads and transparent substrate 8 all shapes
At a stable bridge architecture 17；Later, computer control system 14 controls Z axis lifting platform 11 and rises, and transparent substrate 8 is made to hang down
It directly leaves and receives substrate 12, be broken all bridge architectures 17, leave dotted tin cream 18, and then entirely receive substrate 12 and print
At.
The utility model compared with the existing technology, have following advantages and effects
The utility model tin cream shift module includes transparent substrate 8, fixture 10, Z axis lifting platform 11, receives substrate 12, XYZ
Axis mobile platform 13；The concave surface for accommodating tin cream film 9 is offered in the lower surface of transparent substrate 8；Substrate 12 and Z will be received
Axis lifting platform 11 is placed on XYZ axis mobile platform 13, to adjust the opposite station for receiving substrate 12 and laser beam spot；Operation
When, fixture 10 is mounted on Z axis lifting platform 11, the concave surface of transparent substrate 8 downward, and is placed in receives the upper of substrate 12 in parallel
Side, fixture 10 clamp the edge of transparent substrate 8, carry it by Z axis lifting platform 11 and are receiving 12 upper vertical elevating movement of substrate,
To adjust transparent substrate 8 relative to the distance between reception substrate 12.It is flat in laser and movement by the pulse laser of high-energy
Under the coordinated movement of various economic factors of platform, the tin cream film 9 on transparent substrate 8 is transferred to according to planning path and is received on substrate, realized accurate
The local transfer and printing of the tin cream of control.
The utility model, which is cleverly used, to be offered in the lower surface of transparent substrate 8 for accommodating the recessed of tin cream film 9
Face, and substrate 12 and Z axis lifting platform 11 will be received and be placed on XYZ axis mobile platform 13, substrate 12 and laser are received with adjustment
The opposite station of beam hot spot is realized in conjunction with the pulse laser of high-energy and is not necessarily to mask, contactless high-precision tin cream transfer side
Case.
The utility model technological means is simple and easy to do, is effectively simplified production technology, and greatly shorten the production cycle, drop
Low production cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram before the utility model tin cream induced with laser to transfer equipment.
Fig. 2 is the structural schematic diagram of tin cream shift module in Fig. 1.
Fig. 3 is illustrated before the utility model tin cream induced with laser to the principle of shifting process.
Fig. 4 is the photo using the dotted tin cream of the utility model transfer under Laser Scanning Confocal Microscope.
Specific embodiment
The utility model is more specifically described in detail combined with specific embodiments below.
Embodiment
As shown in Figs 1-4.The utility model discloses before a kind of tin cream induced with laser to transfer equipment, including laser list
Member, computer control system 14, it is characterised in that: further include tin cream shift module；The control of computer control system 14 swashs
The movement of the laser beam exits and tin cream shift module of light unit；
The tin cream shift module includes transparent substrate 8, fixture 10, Z axis lifting platform 11, receives substrate 12, the movement of XYZ axis
Platform 13；
The lower surface of the transparent substrate 8 is the concave surface for accommodating tin cream film 9；Transparent substrate 8 be quartz glass or
Other transparent substances of person.
The reception substrate 12 and Z axis lifting platform 11 are placed on XYZ axis mobile platform 13, with adjustment receive substrate 12 with
The opposite station of laser beam spot；
The fixture 10 is mounted on Z axis lifting platform 11；The concave surface of transparent substrate 8 downward, and is placed in reception substrate in parallel
12 top, the fixture 10 clamp the edge of transparent substrate 8, and by the carrying of Z axis lifting platform 11, it hangs down above reception substrate 12
Straight elevating movement, to adjust transparent substrate 8 relative to the distance between reception substrate 12.
The laser cell includes laser 1, light beam shaping module, the optical path adjusting module being sequentially connected by an optical path；Laser
Device 1, light beam shaping module, optical path adjusting module, tin cream shift module are separately connected computer control system 14.Beam shaping mould
Block includes the extender lens 2 being sequentially connected by an optical path, aperture 3, flat top beam reshaper 4, spatial light modulator 5；Light beam is by expanding
After beam lens 2, aperture 3, the impurity of hot spot can be removed, script Gaussian Energy point can be made after flat top beam reshaper 4
The hot spot of cloth becomes uniform circular distribution or rectangular distribution.Then pass through spatial light modulator 5, in computer control system
Under 14 manipulation, hot spot can be converted into the geomery of user's needs by spatial light modulator 5.
The optical path adjusting module includes the 2-D vibration mirror 6 being sequentially connected by an optical path, f- θ lens 7.Computer control system 14
The movement of light beam position in X/Y plane is realized by control 2-D vibration mirror 6, and focuses on target eventually by f- θ lens 7
In plane.F- θ lens 7 have 355nm anti-reflection film or 532nm, scan angle ± 15 °, effective focal length 120mm.
The concave surface depth for accommodating tin cream film 9 is 20 μm~150 μm.
The reception substrate 12 is pcb board, that is, needs the pcb board of print solder paste.
Tin cream film 9 uses tin cream for 5~No. 7 powder tin creams, and the particle size of tin cream is 15 μm~25 μ when for No. 5 powder
M, the particle size of tin cream is 5 μm~15 μm when for No. 6 powder, and particle size is 2 μm~11 μm when for No. 7 powder.
Laser 1 is pulse laser, and the wavelength of output light source is 355nm or 532nm, pulse width be 10ns~
50ns, repetition rate 10khz~100khz.
The utility model is using, to transfer method, the concrete principle of progress tin cream transfer is as shown in figure 3, laser before laser
1 laser issued is radiated on tin cream film 9 by penetrating transparent substrate 8 after light beam shaping module and optical path adjusting module,
So that tin cream partial gasification, generates bubble 16.With 16 prolonged expansion of bubble, 9 meeting of tin cream film and reception substrate 12 are in contact,
And form stable bridge architecture 17.When transparent substrate 8, which vertically leaves, receives substrate 12, bridge architecture 17 can constantly be drawn high,
Dotted tin cream 18 is left until structural break, and on receiving substrate 12.
Fig. 4 shows image of the dotted tin cream shifted with the utility model under Laser Scanning Confocal Microscope.
To transfer method before the utility model tin cream induced with laser, can be achieved by the steps of:
Step 1: the circuit drawing of reception substrate 12 to be printed is imported into computer control system 14, computer control system
System 14 plans the scanning route of laser 15, scanning speed according to the position of pad on reception substrate 12 to be printed, and according to each
The geomery selection laser parameter of pad and the parameter of light beam shaping module；
Step 2: according to the thickness of tin cream required in actual production, the transparent substrate 8 of concave surface depth needed for selecting, using scraping
Tin cream is applied in entire concave surface by the method for painting, and tin cream film 9 is formed in concave surface；By 9 faced downwards of tin cream film, then will
Transparent substrate 8 is fixed on the fixture 10 that Z axis lifting platform 11 is connected, adjustment transparent substrate 8 and the distance for receiving substrate 12；Away from
After the completion of adjustment, the transfer of tin cream can be started.
Step 3: before laser pulse emission each time, computer control system 14 is according to route pre-planned, control
The rotation of 2-D vibration mirror 6 processed changes laser beam path；And according to preset laser parameter and light beam shaping module
Parameter adjusts the Energy distribution of laser facula；
Step 4: after adjusting parameter, the light beam that laser 1 issues is after light beam shaping module shaping, by two dimension
The optical path adjusting module that galvanometer 6 and f- θ lens 7 form changes walking backward for optical path by 2-D vibration mirror 6, saturating eventually by f- θ
9 top of tin cream film described in step 2 is focused on after mirror 7；Laser 15 is caused after being absorbed by tin cream film 9 by transparent substrate 8
The vaporization of irradiated site part forms bubble 16 inside tin cream film 9, and as bubble 16 constantly expands, will push week
It encloses unboiled part and rushes at reception substrate 12；And stable bridge architecture 17 is formed between transparent substrate 8 and reception substrate 12；
Step 5: repeating step 3 and step 4 until receiving on substrate 12 between all pads and transparent substrate 8 all shapes
At a stable bridge architecture 17；Later, computer control system 14 controls Z axis lifting platform 11 and rises, and transparent substrate 8 is made to hang down
It directly leaves and receives substrate 12, be broken all bridge architectures 17, leave dotted tin cream 18, and then entirely receive substrate 12 and print
At.
As described above, the utility model can be realized preferably.
The embodiments of the present invention is simultaneously not restricted to the described embodiments, other are any without departing from the utility model
Made changes, modifications, substitutions, combinations, simplifications under spiritual essence and principle, should be equivalent substitute mode, are included in
Within the protection scope of the utility model.
Claims (5)
1. feature exists to transfer equipment, including laser cell, computer control system (14) before a kind of tin cream induced with laser
In: it further include tin cream shift module；The laser beam exits and tin cream of computer control system (14) the control laser cell
The movement of shift module；
The tin cream shift module includes transparent substrate (8), fixture (10), Z axis lifting platform (11), receives substrate (12), XYZ axis
Mobile platform (13)；
The lower surface of the transparent substrate (8) is the concave surface for accommodating tin cream film (9)；
The reception substrate (12) and Z axis lifting platform (11) are placed on XYZ axis mobile platform (13), to adjust reception substrate
(12) with the opposite station of laser beam spot；
The fixture (10) is mounted on Z axis lifting platform (11)；The concave surface of transparent substrate (8) downward, and is placed in reception base in parallel
The top of piece (12), the edge of fixture (10) clamping transparent substrate (8) carry it by Z axis lifting platform (11) and are receiving base
Piece (12) upper vertical elevating movement, to adjust transparent substrate (8) relative to the distance between reception substrate (12).
2. according to claim 1 to transfer equipment before tin cream induced with laser, it is characterised in that: the laser cell include according to
Laser (1), the light beam shaping module, optical path adjusting module of secondary optical path connection；
The laser (1), light beam shaping module, optical path adjusting module, tin cream shift module are separately connected computer control system
It unites (14).
3. according to claim 2 to transfer equipment before tin cream induced with laser, it is characterised in that: the light beam shaping module packet
Include the extender lens (2) being sequentially connected by an optical path, aperture (3), flat top beam reshaper (4), spatial light modulator (5)；
The optical path adjusting module includes the 2-D vibration mirror (6) being sequentially connected by an optical path, f- θ lens (7).
4. according to claim 3 to transfer equipment before tin cream induced with laser, it is characterised in that: the receiving tin cream film
(9) concave surface depth is 20 μm~150 μm.
5. according to claim 4 to transfer equipment before tin cream induced with laser, it is characterised in that: the reception substrate (12) is
Pcb board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920011870.7U CN209281091U (en) | 2019-01-04 | 2019-01-04 | To transfer equipment before a kind of tin cream induced with laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920011870.7U CN209281091U (en) | 2019-01-04 | 2019-01-04 | To transfer equipment before a kind of tin cream induced with laser |
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| Publication Number | Publication Date |
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| CN209281091U true CN209281091U (en) | 2019-08-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530931A (en) * | 2019-09-25 | 2019-12-03 | 南京农业大学 | A kind of preparation method of laser transfer printing graphene oxide humidity sensor |
-
2019
- 2019-01-04 CN CN201920011870.7U patent/CN209281091U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530931A (en) * | 2019-09-25 | 2019-12-03 | 南京农业大学 | A kind of preparation method of laser transfer printing graphene oxide humidity sensor |
| CN110530931B (en) * | 2019-09-25 | 2022-03-04 | 南京农业大学 | Preparation method of graphene oxide humidity sensor by laser transfer printing |
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