CN205271085U - A brush mucilage binding is put for diode welding process - Google Patents
A brush mucilage binding is put for diode welding process Download PDFInfo
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- CN205271085U CN205271085U CN201521098987.1U CN201521098987U CN205271085U CN 205271085 U CN205271085 U CN 205271085U CN 201521098987 U CN201521098987 U CN 201521098987U CN 205271085 U CN205271085 U CN 205271085U
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Abstract
The utility model discloses a brush mucilage binding is put for diode welding process, including skeleton and steel mesh, the skeleton is hollow rectangle frame, the steel mesh is the rectangular plate to with skeleton hollow portion phase -match, the steel mesh arranges in the rectangle frame that four sides pass through the binder to be connected on the skeleton, and the steel mesh bottom flushes with the skeleton bottom surface, be provided with a plurality of printing of tablet down holes on the steel mesh, and still be provided with the centre hole on the steel mesh, furthermore, still be provided with a plurality of pins printings hole on the steel mesh, a lower tablet printing hole is answered to a pin printing pore pair, and the lower tablet that corresponds printing hole and pin print the hole and adjacent and arrange side by side, tablet printing hole sectional area is greater than pin printing hole sectional area down. Simple structure, convenient operation are swift, and it is less influenced by outside temperature, atmospheric pressure etc. And the printing quality is stable, in addition, use this device volume of descending the tin cream even, the error is within 5%, and the welding effect is better, can better assurance product quality.
Description
Technical field
This utility model belongs to diode production technical field, is specifically related to a kind of brush coating device for welding diode technique.
Background technology
At present, along with the development of electronic technology, the development of large chip surface mount diode (PS277A) is also very fast, and thus, the process of refinement of product also penetrates into the every aspect of packaging technology.
The encapsulation process of diode generally all can relate to the welding of chip, pin etc., in welding procedure, lower tin cream many employings gluing process, operate more convenient, but this technique is easily subject to the impact of external environment, the tin cream amount that change such as ambient air temperature, plastic squeeze air pressure etc. all easily causes pad is uneven, and put down tin cream and be generally cone, a glue range size can only be measured during detection glue amount, and height cannot be measured, therefore it cannot be guaranteed that the concordance of produced product dispensing amount, welding quality is affected, thus affecting the use of final products.
Utility model content
This utility model aims to provide a kind of in welding diode technique, simple in construction, convenient to operation, and lower tin cream amount is uniform and stable, the brush coating device being not easily affected by the external environment.
For this, the technical scheme that this utility model adopts is: a kind of brush coating device for welding diode technique, including skeleton and steel mesh, described skeleton is the rectangle frame of hollow, described steel mesh is rectangular slab, and matches with skeleton hollow space, and described steel mesh is placed in rectangle frame, four limits are connected on skeleton by binding agent, and flush with skeleton bottom surface bottom steel mesh; Described steel mesh is provided with some lower tablet printing holes, and on steel mesh, is additionally provided with centre hole.
Further, described steel mesh is additionally provided with some pin printing holes, the corresponding lower tablet printing hole of one pin printing hole, and the lower tablet printing hole of correspondence and pin printing hole adjacent and be arranged side by side, described lower tablet printing hole sectional area is more than pin printing hole sectional area.
Further, described lower tablet printing hole is arranged in steel mesh centre position, and for rectangular opening, sectional dimension is 2.7*2.7mm, and steel mesh thickness is 0.15mm; Described pin printing hole is bar hole; Described centre hole is circular port, is set to two, and interval is arranged; Described binding agent is acrylate adhesives.
On the basis of such scheme, described skeleton material is aluminium alloy, and is provided with bolt hole on the sidewall of skeleton left and right.
The beneficial effects of the utility model are: simple in construction, convenient to operation, are affected less by outside air temperature, air pressure etc., printing quality stable during lower tin cream; Additionally, use the descended tin cream amount of this device uniform, error is within 5%, and welding effect is better, can better ensure product quality.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is a portion enlarged drawing in Fig. 1.
Detailed description of the invention
By the examples below and in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Fig. 1��2, a kind of brush coating device for welding diode technique, mainly it is made up of skeleton 1 and steel mesh 2, skeleton 1 is the rectangle frame of hollow. Preferably, skeleton 1 material is aluminium alloy, and is provided with bolt hole 3 on skeleton about 1 sidewall. Skeleton 1 is fixed on board by bolt hole 3, its material uses aluminium alloy, good working strength is can guarantee that while alleviating deadweight, and it is fixing more steadily reliable in order to make in the present embodiment, skeleton 1 left side wall is provided with two bolts hole 3, right side wall is also provided with two bolts hole 3.
Steel mesh 2 is rectangular slab, and matches with skeleton 1 hollow space, and steel mesh 2 is arranged in rectangle frame, and four limits are connected on skeleton 1 by binding agent, and flushes with skeleton 1 bottom surface bottom steel mesh 2, is provided with some lower tablet printing holes 21 on steel mesh 2. Preferably, steel mesh 2 is additionally provided with some pin printing holes 22, the corresponding lower tablet printing hole 21 of one pin printing hole 22, and the lower tablet printing hole 21 of correspondence and pin printing hole 22 adjacent and be arranged side by side, lower tablet printing hole 21 sectional area is more than pin printing hole 22 sectional area. Skeleton 1 and steel mesh 2 junction is made to combine closely by binding agent, binding agent can preferred acrylate binding agent in the present embodiment, in use do not have leakage tin cream phenomenon, lower tablet printing hole 21 just medium position to lower tablet end face, pin printing hole 22 is just to diode anode pin pad.
Steel mesh 2 is additionally provided with centre hole 23. Preferably, centre hole 23 is circular port, is set to two, and interval is arranged. Centre hole 23 can hold thimble traverse, and the lower tablet printing tin cream is lifted off steel mesh 2.
In the above-described embodiments, better, lower tablet printing hole 21 is arranged in steel mesh 2 centre position, and on steel mesh 2, position, the left and right sides is used for depositing tin cream in advance, it is to avoid tin cream drops before printing from lower tablet printing hole 21 and pin printing hole 22; Lower tablet printing hole 21 is rectangular opening, and sectional dimension is 2.7*2.7mm, and steel mesh 2 thickness is 0.15mm; Pin printing hole 22 is bar hole. For PSA1550L, it is chip used for 118*118mil (length of side is about 3mm), and the tin cream amount that lower tablet printing hole 21 can be printed onto on lower tablet is about 1.1mm3, after being pressed on tin cream by chip, chip four limit all has tin cream slightly to overflow, but will not climb along chip, can reach good welding effect.
When using the brush coating device in the present embodiment, brush coating device is fixed on board, the position of brush coating device is first adjusted before fixing, make lower tablet printing hole 21 just to welding position in the middle of lower tablet, descending tablet to be preferably sized to 4.0*4.0mm square in the present embodiment and carry copper tablet, pin printing hole 22 is just on diode anode pin pad; Being stored on steel mesh 2 by tin cream left and right sides blank space in advance when printing, steel mesh 2 is arranged below cylinder, can by lower tablet jack-up and the close contact of steel mesh 2 back side; After lower tablet arrives precalculated position, air knife pressure above steel mesh 2 fits tightly with steel mesh 2 front, air knife scrapes tin cream and prints back and forth in steel mesh 2 front, ensure that tin cream is uniformly covered with lower tablet printing hole 21 and pin printing hole 22, it is completed for printing the thimble above rear steel mesh 2 and extends downwardly in centre hole 23, coordinate cylinder that lower tablet is lifted off steel mesh 2.
Claims (4)
1. the brush coating device for welding diode technique, it is characterized in that: include skeleton (1) and steel mesh (2), the rectangle frame that described skeleton (1) is hollow, described steel mesh (2) is rectangular slab, and match with skeleton (1) hollow space, described steel mesh (2) is arranged in rectangle frame, four limits are connected on skeleton (1) by binding agent, and steel mesh (2) bottom flushes with skeleton (1) bottom surface; Described steel mesh (2) is provided with some lower tablet printing holes (21), and on steel mesh (2), is additionally provided with centre hole (23).
2. the brush coating device for welding diode technique according to claim 1, it is characterized in that: described steel mesh (2) is additionally provided with some pin printing holes (22), one corresponding lower tablet printing hole (21) of pin printing hole (22), and the lower tablet printing hole (21) of correspondence and pin printing hole (22) adjacent and be arranged side by side, described lower tablet printing hole (21) sectional area is more than pin printing hole (22) sectional area.
3. the brush coating device for welding diode technique according to claim 2, it is characterized in that: described lower tablet printing hole (21) is arranged in steel mesh (2) centre position, for rectangular opening, sectional dimension is 2.7*2.7mm, and steel mesh (2) thickness is 0.15mm; Described pin printing hole (22) is bar hole; Described centre hole (23) is circular port, is set to two, and interval is arranged; Described binding agent is acrylate adhesives.
4. the brush coating device for welding diode technique according to any one of claim 1-3, it is characterised in that: described skeleton (1) material is aluminium alloy, and is provided with bolt hole (3) on the sidewall of skeleton (1) left and right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521098987.1U CN205271085U (en) | 2015-12-25 | 2015-12-25 | A brush mucilage binding is put for diode welding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521098987.1U CN205271085U (en) | 2015-12-25 | 2015-12-25 | A brush mucilage binding is put for diode welding process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205271085U true CN205271085U (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521098987.1U Active CN205271085U (en) | 2015-12-25 | 2015-12-25 | A brush mucilage binding is put for diode welding process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205271085U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109109444A (en) * | 2018-08-17 | 2019-01-01 | 北方电子研究院安徽有限公司 | A kind of metal plate press back adhesive dispenser |
-
2015
- 2015-12-25 CN CN201521098987.1U patent/CN205271085U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109109444A (en) * | 2018-08-17 | 2019-01-01 | 北方电子研究院安徽有限公司 | A kind of metal plate press back adhesive dispenser |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |