CN215735102U - High-frequency flexible printed circuit board tin brushing jig - Google Patents
High-frequency flexible printed circuit board tin brushing jig Download PDFInfo
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- CN215735102U CN215735102U CN202122197660.1U CN202122197660U CN215735102U CN 215735102 U CN215735102 U CN 215735102U CN 202122197660 U CN202122197660 U CN 202122197660U CN 215735102 U CN215735102 U CN 215735102U
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Abstract
The utility model discloses a high-frequency flexible sheet tin brushing jig, which comprises: the fixed bakelite base, the furnace-passing base and the clamp steel sheet are arranged in sequence; an FPC board is arranged between the furnace-passing base and the clamp steel sheet; a plurality of first positioning columns are arranged on the periphery of the fixed bakelite base and used for fixing the furnace-passing base, and a plurality of second positioning columns are arranged in the middle of the fixed bakelite base and used for fixing the FPC board; the furnace-passing base is provided with a limiting mechanism at the periphery for limiting the position of the clamp steel sheet, the furnace-passing base is further provided with a plurality of magnetic suction assemblies for sucking the clamp steel sheet to be not displaced, the middle part of the furnace-passing base is further provided with a plurality of first depth control grooves which are arranged side by side, and a first opening groove is formed between every two adjacent depth control grooves. According to the utility model, no adhesive tape is used, the use cost of the adhesive tape and the labor cost for sticking and tearing the adhesive tape are reduced, the processing efficiency is higher, the quality risk of adhesive tape falling is avoided, the steel mesh bonding precision is higher, and the consistency of different batches of tin brushing amounts is better.
Description
Technical Field
The utility model relates to the technical field of FPC (flexible printed circuit) boards, in particular to a high-frequency flexible board tin brushing jig.
Background
At present, core optical devices in a high-speed photoelectric conversion module are mainly connected with an FPC (flexible printed circuit) through a high-performance FPC (flexible printed circuit), and the welding modes of the FPC and the optical devices mainly comprise laser welding, hot-pressure welding and manual soldering iron drag welding; the manual dragging welding has the advantages that the equipment investment is low, only a soldering iron is needed, but the defects are obvious, the efficiency is low, the requirement on the skill and skill level of an operator is very high, the welding temperature is not controllable, the FPC (flexible printed circuit) and particularly the high-speed FPC have common heat resistance, for example, the welding problems recommended by the Dupont TK series and the Songtou LCP series which have the best performance in the industry at present are not more than 320 ℃, the technical requirement on welding workers is very high, and the FPC can be welded and even damaged by high-speed expensive high-speed optical devices without attention; laser welding is a technology which starts to rise in recent years, and has the advantages that the welding temperature is controllable, the efficiency is slightly higher than that of manual welding of soldering irons, the efficiency is still low when welding spots are more, and both temperature control and efficiency can be considered in hot press welding, so that the laser welding is a mainstream processing method in the communication industry in the future.
If thermocompression bonding is selected, the FPC must be pre-tinned, and the conventional method has several problems:
the golden finger which is not brushed with tin must be protected by being pasted with an adhesive tape, otherwise, the golden finger has the risk of being polluted by tin in the processes of printing tin paste and passing through a furnace; the labor consumption for sticking the adhesive tape is very much, the adhesive tape has the risk of adhesive falling after passing through a furnace at high temperature, and the adhesive tape which can resist high temperature and can not fall at all does not exist in the market temporarily; after the furnace is finished, a person specially needs to tear off the adhesive tape, so that the efficiency is very low; when the adhesive tape is pasted, the adhesive tape has a certain height, the steel mesh can be jacked up by the adhesive tape during printing, the positions of pasting the adhesive tape at each time are different, the heights of the steel mesh jacked up by the adhesive tape are also different, and the difference of tin amount batches of products is larger.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides a high-frequency Flexible Printed Circuit (FPC) tin brushing jig which solves the problems of poor tin brushing quality consistency, adhesive tape residual glue problem and tin brushing efficiency of a high-frequency high-speed FPC for BOX packaging due to tin brushing by using a universal jig.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
the utility model provides a high frequency soft board brush tin tool, includes: the fixed bakelite base, the furnace-passing base and the clamp steel sheet are arranged in sequence; an FPC board is arranged between the furnace-passing base and the clamp steel sheet;
a plurality of first positioning columns are arranged on the periphery of the fixed bakelite base and used for fixing the furnace-passing base, and a plurality of second positioning columns are arranged in the middle of the fixed bakelite base and used for fixing the FPC board;
the furnace-passing base is provided with a plurality of magnetic suction assemblies for sucking the clamp steel sheet to be not displaced, the middle part of the furnace-passing base is also provided with a plurality of first depth control grooves which are arranged side by side, and a first open groove is formed between every two adjacent depth control grooves;
a plurality of second depth control grooves arranged side by side are formed in the clamp steel sheet, and a second through groove is formed between every two adjacent second depth control grooves.
Preferably, the high-frequency flexible printed circuit board tin brushing jig further comprises an external printing base, the furnace passing base, the FPC board and the clamp steel sheet are fixed to form an integrated structure, and the integrated structure is installed on the printing base for printing after being detached from the fixed bakelite base.
Preferably, the printing base is further provided with a plurality of through holes and a bump corresponding to each first opening groove.
Preferably, a plurality of third positioning columns are further arranged on the periphery of the printing base.
Preferably, the furnace-passing base is further provided with a first through hole and a second through hole which are matched with the first positioning column and the second positioning column; and the FPC board is provided with a positioning hole matched with the second positioning column.
Preferably, a notch is all seted up at cross stove base both ends for place the production model.
Preferably, both ends of the clamp steel sheet are provided with small blocks extending outwards.
Preferably, the magnetic attraction component is provided as a magnet.
Preferably, the limiting mechanism is a limiting groove.
By adopting the technical scheme of the utility model, the utility model has the following beneficial effects:
the adhesive tape is not used, the use cost of the adhesive tape and the labor cost for sticking and tearing the adhesive tape are reduced, and the processing efficiency is higher; the adhesive tape is not used, so that the quality risk of adhesive tape falling is avoided; the adhesive tape is not used, the steel mesh bonding precision is higher, and the consistency of different batches of tin brushing quantities is better;
the thickness of the steel sheet of the clamp is 60um, and the clamp mainly plays a role in protecting the gold fingers without being brushed with tin from being polluted by tin in the printing and furnace passing processes;
the furnace base is made of aluminum alloy with the thickness of 2.0mm and is used for bearing the effect of an FPC (flexible printed circuit) in the processes of printing solder paste and passing through an SMT (surface mount technology) reflow furnace, and the surface of the furnace base is required to be subjected to oxidation treatment;
the printing base is made of 6.0mm thick aluminum alloy and is used for bearing the furnace base when tin paste is printed;
the fixed bakelite base is 15mm thick and made of a bakelite plate and used for positioning the FPC at a specified position of the furnace base.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the mounting structure of the present invention during printing;
FIG. 3 is a schematic view of the structure of the fixing bakelite base according to the present invention;
FIG. 4 is a schematic view of the base structure of the present invention;
FIG. 5 is a schematic view of a steel sheet structure of the clamp of the present invention;
FIG. 6 is a schematic view of a printing base structure according to the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, a first feature "on" or "an over" a second feature unless expressly stated or limited otherwise
"under" may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact, but being in contact with each other through additional features between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1 to 6, the present invention provides a high frequency flexible board tin brushing jig, including: the fixed bakelite base 1, the furnace-passing base 2 and the clamp steel sheet 3 are arranged in sequence; an FPC board is arranged between the furnace-passing base 2 and the clamp steel sheet 3;
a plurality of first positioning columns 101 are arranged on the periphery of the fixed bakelite base 1 and used for fixing the furnace base 2, and a plurality of second positioning columns 102 are arranged in the middle of the fixed bakelite base and used for fixing an FPC (flexible printed circuit) board;
the periphery of the top of the furnace-passing base 2 is provided with a limiting mechanism 201 for limiting the position of the clamp steel sheet 3, the furnace-passing base 2 is also provided with a plurality of magnetic suction assemblies 206 for sucking the clamp steel sheet 3 without displacement, the middle of the furnace-passing base 2 is also provided with a plurality of first depth control grooves 202 arranged side by side, and a first through groove 203 is formed between every two adjacent depth control grooves 202;
a plurality of second depth control grooves 301 which are arranged side by side are formed in the clamp steel sheet 3, and a second through groove 302 is formed between every two adjacent second depth control grooves 301.
In this embodiment, the first depth-control groove 202 is designed to avoid reinforcement on the FPC, so that the FPC is placed on the jig smoothly, and the first depth-control groove 202 is in a long strip shape; the purpose of first logical groove 203 design is when brushing tin, and the lug that makes the brush tin base can be followed first groove of opening and expose, supports FPC board pad of brushing tin, avoids brushing tin pad support degree not enough and leads to the tin volume too big, in addition first open the groove fretwork after, just heat exchange when crossing the stove, lets the tin cream can obtain sufficient heat, and this first logical groove 203 of opening is rectangular shape.
In the embodiment, the second depth control groove 301 is designed to prevent a gold finger from being scratched by the steel sheet 3 when the clamp steel sheet 3 is attached to the FPC board, and the second depth control groove 301 is in a long strip shape; the second through groove 302 is designed to expose the pad to be brushed with solder paste, and the second through groove 302 is in a strip shape.
The material of anchor clamps steel sheet 3 in this embodiment is 305 stainless steel, and is 60um thick, and the main function is that the golden finger of protection non-brush tin does not pollute by tin in printing and the stove in-process that crosses, anchor clamps steel, 3 both ends are equipped with the fritter of outside extension.
In the embodiment, the printing base 4 is an aluminum alloy with the thickness of 6.0mm, and is used for bearing the furnace base 2 when printing the solder paste; the furnace base 2 is made of aluminum alloy with the thickness of 2.0mm and is used for bearing the action of an FPC (flexible printed circuit) in the processes of printing solder paste and passing through an SMT (surface mounting technology) reflow furnace, and the surface of the furnace base is subjected to oxidation treatment; the fixed bakelite base is 1 mm thick and made of a bakelite plate, and is used for positioning the FPC at a specified position of the furnace-passing base; hollowing out the lower part of the FPC printing finger to ensure that enough air can be arranged near the FPC tin brushing finger for heat exchange when the FPC is in a furnace; the high-frequency flexible printed circuit board tin brushing jig further comprises an external printing base 4, the furnace base 2, the FPC board and the clamp steel sheet 3 are fixed to form an integrated structure, and the integrated structure is installed on the printing base 4 to be printed after being detached from the fixed bakelite base 1.
In the embodiment, a plurality of through holes 402 are distributed on the printing base 4 for reducing the weight of the printing base; the projection 401 can partially protrude from the first open groove 203 of the oven base 2, is used for supporting the lower part of a pad of the FPC board solder paste, and the number of the third positioning columns 403 is 4 and is arranged at the corner of the printing base 4; the printing base 4 is further provided with a plurality of through holes 402 and bumps 401 corresponding to the first through grooves 203; a plurality of third positioning columns 403 are further disposed around the printing base 4.
In the embodiment, the first through holes are arranged at four corners of the furnace-passing base, the second through holes are arranged in the middle of the furnace-passing base, the diameters of the first through holes and the second through holes can be 4mm, and the furnace-passing base 2 is also provided with a first through hole 204 and a second through hole which are matched with the first positioning column 101 and the second positioning column 102; and the FPC board is provided with a positioning hole matched with the second positioning 102 column.
The notch 205 of design in this embodiment is used for placing the production model, cross stove base 2 both ends and all seted up a notch 205.
The working principle of the utility model is as follows:
the furnace base 2 is fixed on the bakelite base 1 through a first positioning column 101, then the FPC is sleeved on the furnace base 2 through a second positioning column 102, then the clamp steel sheet 3 is covered on the FPC through the second positioning column 102, and the clamp steel sheet 3 is firmly sucked through a magnetic suction assembly 206 on the furnace base 2; and then taking the furnace base 2+ FPC + clamp steel sheet 3 fixed into a whole from the bakelite base 1, placing the furnace base 2+ FPC + clamp steel sheet 3 on a solder paste printing base 4 for solder paste printing, taking the furnace base 2+ FPC + clamp steel sheet 3 down to a track of a reflow furnace for SMT reflow soldering after the printing and the printing are finished, uncovering the clamp steel sheet 3 after the soldering is finished, and taking out the FPC.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The utility model provides a high frequency soft board brush tin tool which characterized in that includes: the fixed bakelite base, the furnace-passing base and the clamp steel sheet are arranged in sequence; an FPC board is arranged between the furnace-passing base and the clamp steel sheet;
a plurality of first positioning columns are arranged on the periphery of the fixed bakelite base and used for fixing the furnace-passing base, and a plurality of second positioning columns are arranged in the middle of the fixed bakelite base and used for fixing the FPC board;
the furnace-passing base is provided with a limiting mechanism at the periphery and used for limiting the position of the clamp steel sheet, a plurality of magnetic suction components are further arranged on the furnace-passing base and used for sucking the clamp steel sheet to be not displaced, a plurality of first depth control grooves arranged side by side are further formed in the middle of the furnace-passing base, and a first open groove is formed between every two adjacent depth control grooves;
a plurality of second depth control grooves arranged side by side are formed in the clamp steel sheet, and a second through groove is formed between every two adjacent second depth control grooves.
2. The high-frequency flexible printed circuit board tin brushing jig of claim 1, further comprising an external printing base, wherein the oven base, the FPC board and the clamp steel sheet are fixed to form an integrated structure, and the integrated structure is detached from the fixed bakelite base and then is installed on the printing base for printing.
3. The high-frequency soft board tin brushing jig as claimed in claim 2, wherein the printing base is further provided with a plurality of through holes and a bump corresponding to each first through groove.
4. The high-frequency flexible printed circuit board tin brushing jig as claimed in claim 3, wherein a plurality of third positioning posts are further disposed around the printing base.
5. The high-frequency soft board tin brushing jig as claimed in claim 1, wherein the furnace-passing base is further provided with a first through hole and a second through hole which are matched with the first positioning column and the second positioning column; and the FPC board is provided with a positioning hole matched with the second positioning column.
6. The high-frequency soft board tin brushing jig as claimed in claim 5, wherein a notch is formed at each end of the furnace base for accommodating a production model.
7. The high-frequency soft board tin brushing jig is characterized in that small blocks extending outwards are arranged at two ends of the clamp steel sheet.
8. The high-frequency soft board tin brushing jig as claimed in claim 1, wherein the magnetic component is a magnet.
9. The high-frequency soft board tin brushing jig is characterized in that the limiting mechanism is a limiting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122197660.1U CN215735102U (en) | 2021-09-10 | 2021-09-10 | High-frequency flexible printed circuit board tin brushing jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122197660.1U CN215735102U (en) | 2021-09-10 | 2021-09-10 | High-frequency flexible printed circuit board tin brushing jig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215735102U true CN215735102U (en) | 2022-02-01 |
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ID=80018771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122197660.1U Active CN215735102U (en) | 2021-09-10 | 2021-09-10 | High-frequency flexible printed circuit board tin brushing jig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215735102U (en) |
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2021
- 2021-09-10 CN CN202122197660.1U patent/CN215735102U/en active Active
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