CN213560432U - Linear micro-welding-point preparation clamp with adjustable welding point height - Google Patents
Linear micro-welding-point preparation clamp with adjustable welding point height Download PDFInfo
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- CN213560432U CN213560432U CN202022373196.2U CN202022373196U CN213560432U CN 213560432 U CN213560432 U CN 213560432U CN 202022373196 U CN202022373196 U CN 202022373196U CN 213560432 U CN213560432 U CN 213560432U
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Abstract
The utility model relates to an anchor clamps technical field, and disclose a little solder joint preparation anchor clamps of solder joint height-adjustable's line type, the on-line screen storage device comprises a base, three rectangular channel has evenly been seted up to the upper end of base, has placed V-arrangement piece under first V-arrangement piece and the second placed along same axis in the rectangular channel, has placed the mica sheet under first V-arrangement piece and the second between V-arrangement piece one side in opposite directions, and the rectangular channel lies in one side inside the expansion piece of having placed that first V-arrangement piece was kept away from to V-arrangement piece under the second, and fixedly connected with is located the regulating block of expansion piece rear side in the rectangular channel, has placed first straight copper wire and the straight copper wire of second in V-arrangement piece under first V-arrangement. The utility model discloses make the highly convenient for of whole linear little solder joint adjust, greatly reduced the interpolation degree of difficulty of brazing filler metal and scaling powder for the copper wire that loads is difficult for taking place the dislocation, adopts mica sheet and inflation piece control solder joint height, and easy operation and the uniformity of the little solder joint of same height are good.
Description
Technical Field
The utility model relates to an anchor clamps technical field especially relates to a little solder joint of solder joint height-adjustable's line type preparation anchor clamps.
Background
The development of three-dimensional high-density packaging technology enables the size of welding spots to be smaller and smaller, and in the field of three-dimensional packaging, the diameter of the existing micro welding spot reaches 20-10 mu m. The smaller the size of the welding spot is, the more limited the number of crystal grains in a single welding spot is, and even a single-crystal micro welding spot appears, the miniaturization of the size of the welding spot makes the anisotropy of the mechanical behavior of the micro welding spot more and more obvious, and at the moment, the macroscopic mechanical behavior of the welding spot is no longer suitable for the mechanical behavior of the micro welding spot. Meanwhile, researches show that the change of the size of the micro welding spot has important influence on the mechanical behavior of the micro welding spot. In the three-dimensional packaging of TSV structures, the micro-interconnect structures often exist in the form of "Cu/solder/Cu" sandwich structure line pads. In order to research the mechanical behavior of the micro-welding spots, researchers often need to prepare a large number of linear micro-welding spots, however, the preparation of the linear micro-welding spots of the sandwich structure is very difficult, firstly, the gap between copper wires needs to be adjusted (dozens of micrometers), two copper wires are ensured to be on the same straight line, then, brazing filler metal and soldering flux are added into the gap, finally, the loaded copper wires and brazing filler metal are subjected to reflow soldering on a BGA repair table, the gap can be filled with the brazing filler metal under the capillary action, and after the welding spots are cooled, redundant brazing filler metal is ground to obtain the linear welding spots of the sandwich structure. In the preparation process of the linear micro-welding spot, the adjustment of the gap of the copper wire and the addition of the brazing filler metal and the soldering flux are carried out in a micron-sized mode, and the copper wire is easy to move in the process of adding the brazing filler metal and the soldering flux because the copper wire is light, so that the height of the welding spot is not met or two copper wires are staggered. The linear micro welding spots prepared by the simple butt joint method not only have the defects that copper wires are easy to misplace, the gap of the copper wires is difficult to adjust, brazing filler metal and soldering flux are difficult to add, but also have poor consistency of the micro welding spots with the same height, so that the test result is greatly influenced, and the test difficulty of researchers can be increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the line type micro-welding spot that adopts simple butt joint method preparation among the prior art not only the copper wire easily takes place the dislocation, the copper wire clearance adjustment is difficult, brazing filler metal and scaling powder add the difficulty and the uniformity of the same high micro-welding spot is relatively poor, this greatly influences the test result and can increase researcher's the experimental degree of difficulty, and the anchor clamps are prepared to the line type micro-welding spot of a solder joint height-adjustable who proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a linear micro-welding spot preparation clamp with adjustable welding spot height comprises a base, wherein three rectangular grooves are uniformly formed in the upper end of the base, a first lower V-shaped block and a second lower V-shaped block which are arranged along the same axis are arranged in the rectangular groove, mica sheets are placed between the opposite sides of the first lower V-shaped block and the second lower V-shaped block, an expansion block is placed in the rectangular groove at the inner part of one side of the second lower V-shaped block far away from the first lower V-shaped block, the rectangular groove is fixedly connected with an adjusting block positioned at the rear side of the expansion block through two first inner hexagon bolts, a first straight copper wire and a second straight copper wire are respectively arranged in the first lower V-shaped block and the second lower V-shaped block, the brazing filler metal is adhered to one end, close to the second straight copper wire, of the first straight copper wire, and the upper ends of the opposite sides of the first lower V-shaped blocks and the second lower V-shaped blocks are fixedly connected with upper V-shaped blocks which are in crimping connection with the upper sides of the first straight copper wire and the second straight copper wire through two second hexagon socket head cap bolts.
Preferably, the end faces of the first straight copper wire and the second straight copper wire are polished smoothly.
Preferably, the upper ends of the first lower V-shaped block and the second lower V-shaped block are symmetrically and fixedly connected with two trimming positioning pins, and pin holes correspondingly spliced with the trimming positioning pins are formed in the surface of the upper V-shaped block.
Preferably, the specific materials of the base, the first lower V-shaped block, the second lower V-shaped block, the upper V-shaped block and the adjusting block are all aluminum.
Preferably, the specific material of the expansion block is zinc.
Preferably, the right end face of the first straight copper wire is flush with the right end face of the first lower V-shaped block, and the left end face of the second straight copper wire is flush with the left end face of the second lower V-shaped block.
Compared with the prior art, the utility model provides a little solder joint of solder joint height-adjustable's line type preparation anchor clamps possesses following beneficial effect:
1. according to the linear micro-welding-point preparation clamp with the adjustable welding point height, the copper wires are positioned by using the upper V-shaped groove and the lower V-shaped groove, the upper surface is provided with the short V-shaped groove, and the lower surface is provided with the long V-shaped groove, so that the two copper wires are more easily ensured to be on the same straight line.
2. This little solder joint preparation anchor clamps of solder joint height-adjustable's line type avoids the operation of follow-up this difficulty of joining the brazing filler metal through tentatively welding the brazing filler metal on the copper wire in advance.
3. According to the linear micro-welding-point preparation clamp with the adjustable welding point height, the welding point height is controlled by the mica sheet and the expansion block, the operation is simple, and the consistency of the micro-welding points with the same height is good.
And the part that does not relate to among the device all is the same with prior art or can adopt prior art to realize, the utility model discloses make the highly convenient for of whole linear little solder joint adjust, greatly reduced the interpolation degree of difficulty of brazing filler metal and scaling powder for the copper wire that loads is difficult for taking place the dislocation, adopts mica sheet and expansion block control solder joint height, and easy operation and the uniformity of the little solder joint of the same height are good.
Drawings
FIG. 1 is a schematic structural view of a linear micro-welding-spot preparation fixture with adjustable height of welding spots provided by the present invention;
FIG. 2 is a schematic view of a base structure of a linear micro-welding-point preparation fixture with adjustable welding point height according to the present invention;
fig. 3 is a schematic view of a local structure of a first straight copper wire and a second straight copper wire of a linear micro-solder joint preparation fixture with adjustable solder joint height according to the present invention;
fig. 4 is a schematic diagram of a partially enlarged structure of the linear micro-solder joint preparation fixture with adjustable solder joint height according to the present invention.
In the figure: the device comprises a base 1, a rectangular groove 2, a first lower V-shaped block 3, a second lower V-shaped block 4, a mica sheet 5, an expansion block 6, a first inner hexagonal bolt 7, an adjusting block 8, a first straight copper wire 9, a second straight copper wire 10, brazing filler metal 11, a second inner hexagonal bolt 12, an upper V-shaped block 13 and a trimming positioning pin 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are 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 therefore, should not be construed as limiting the present invention.
Referring to fig. 1-4, a little solder joint preparation anchor clamps of solder joint height-adjustable's line type, including base 1, three rectangular channel 2 has evenly been seted up to the upper end of base 1, place first V-arrangement piece 3 and second V-arrangement piece 4 under the same axis of following and placing in rectangular channel 2, mica sheet 5 has been placed between one side in opposite directions of first V-arrangement piece 3 and second V-arrangement piece 4, rectangular channel 2 is located one side inside of V-arrangement piece 4 keeping away from first V-arrangement piece 3 under the second and has placed inflation piece 6, be located the regulating block 8 of inflation piece 6 rear side through two first interior hexagonal bolt 7 fixedly connected with in rectangular channel 2, first straight copper wire 9 and second straight copper wire 10 have respectively been placed in first V-arrangement piece 3 and the second V-arrangement piece 4 under the first, the one end that first straight copper wire 9 is close to second straight copper wire 10 adheres to have brazing filler metal 11, the upper end of V-arrangement piece 4 one side all is pressed in opposite directions all through two second interior hexagonal bolt 12 fixedly connected with crimping under first V- An upper V-block 13 on the upper side of the copper wire 9 and the second straight copper wire 10.
The end faces of the first straight copper wire 9 and the second straight copper wire 10 are polished smoothly.
The upper ends of the first lower V-shaped block 3 and the second lower V-shaped block 4 are symmetrically and fixedly connected with two trimming positioning pins 14, and pin holes correspondingly spliced with the trimming positioning pins 14 are formed in the surface of the upper V-shaped block 13.
The specific materials of the base 1, the first lower V-shaped block 3, the second lower V-shaped block 4, the upper V-shaped block 13 and the adjusting block 8 are all aluminum.
The specific material of the expansion block 6 is zinc.
The right end face of the first straight copper wire 9 is flush with the right end face of the first lower V-shaped block 3, and the left end face of the second straight copper wire 10 is flush with the left end face of the second lower V-shaped block 4.
In the utility model, when in use, the end faces of the first straight copper wire 9 and the second straight copper wire 10 are firstly polished smooth through the first straight copper wire 9 and the second straight copper wire 10, the copper wires with the length of about 2cm close to the polished end faces are required to be ensured to be straight after polishing is completed, the two copper wires are ensured to be on the same straight line for subsequent positioning, the prepared first straight copper wire 9 and the second straight copper wire 10 are respectively placed on the first lower V-shaped block 3 and the second lower V-shaped block 4, the upper V-shaped block 13 is stably and accurately placed on the first lower V-shaped block 3 and the second lower V-shaped block 4 through the edging positioning pin 14, the right end face of the polished first straight copper wire 9 and the right end face of the first lower V-shaped block 3 are leveled through adjusting the first straight copper wire 9 and the second straight copper wire 10 under the body type microscope, so that the left end face of the second straight copper wire 10 and the left end face of the second lower V-shaped block 4 are leveled, finally, fixing an upper V-shaped block 13, a first lower V-shaped block 3, a second lower V-shaped block 4, a first straight copper wire 9 and a second straight copper wire 10 through two second inner hexagonal bolts 12, coating soldering flux on the end surface of the polished first straight copper wire 9 after the copper wires are clamped, then, heating the end surface of the copper wire with a proper amount of solder balls to enable the solder balls to be initially melted and to be welded with the first straight copper wire by using an air gun, forming solder 11 on the end surface of the first straight copper wire 9, placing the first straight copper wire 9 with the solder 11 and the second straight copper wire 10 without the solder into the rectangular groove 2 of the base 1, placing a mica sheet 5 between the first lower V-shaped block 3 and the second lower V-shaped block 4 where the first straight copper wire 9 and the second straight copper wire 10 are located for limiting the height of the solder point (the thickness of the mica sheet is determined by the height of the solder point), placing the mica sheet 5, placing an expansion block 6 and an adjusting block 8 in the rectangular groove 2 of the, the adjusting block 8 is provided with an annular groove, the adjusting block is moved under a body type microscope to enable the end face of the second straight copper wire 10 to be close to the brazing filler metal 11 as much as possible, then the adjusting block 8 is fixed through two first inner hexagon bolts 7, after clamping is completed, a scaling powder can be added in the gap between the first straight copper wire 9 and the second straight copper wire 10, then the clamped first straight copper wire 9 and the clamped second straight copper wire 10 are placed into a BGA repairing table for welding, a base 1, a first lower V-shaped block 3, a second lower V-shaped block 4, an upper V-shaped block 13 and the adjusting block 8 of the clamp are all made of aluminum, an expansion block 6 is made of zinc with a higher expansion coefficient than that of aluminum, the brazing filler metal melts rapidly when the temperature rises during welding, meanwhile, due to the fact that the temperature of the expansion block 6 rises and the expansion coefficient of the expansion block is larger than that of the aluminum, the expansion block 6 can extrude the second lower V-shaped block 4 to move and compress the mica, after waiting to cool off, take off the good first straight copper wire 9 of welding and polish unnecessary brazing filler metal, the solder joint just is prepared and is accomplished, be equipped with three rectangular channel 2 on the base 1 of this anchor clamps, so once only can prepare three linear solder joint, make the highly convenient for of whole linear little solder joint adjust, greatly reduced the interpolation degree of difficulty of brazing filler metal and scaling powder, make the copper wire that loads well be difficult for taking place the dislocation, adopt mica sheet and expansion piece control solder joint height, easy operation and the uniformity of the little solder joint of the same height are good.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A linear micro-welding-point preparation clamp with adjustable welding point height comprises a base (1) and is characterized in that three rectangular grooves (2) are uniformly formed in the upper end of the base (1), a first lower V-shaped block (3) and a second lower V-shaped block (4) which are arranged along the same axis are placed in each rectangular groove (2), a mica sheet (5) is placed between one opposite sides of the first lower V-shaped block (3) and the second lower V-shaped block (4), an expansion block (6) is placed inside one side, away from the first lower V-shaped block (3), of each rectangular groove (2), an adjusting block (8) located on the rear side of the expansion block (6) is fixedly connected in each rectangular groove (2) through two first inner hexagonal bolts (7), a first straight copper wire (9) and a second straight copper wire (10) are respectively placed in each of the first lower V-shaped block (3) and the second lower V-shaped block (4), one end of the first straight copper wire (9) close to the second straight copper wire (10) is adhered with brazing filler metal (11), and the upper ends of the opposite sides of the first lower V-shaped block (3) and the second lower V-shaped block (4) are fixedly connected with upper V-shaped blocks (13) which are pressed on the upper sides of the first straight copper wire (9) and the second straight copper wire (10) through two second inner hexagonal bolts (12).
2. The linear micro-welding spot preparation clamp with the adjustable welding spot height is characterized in that the end faces of the first straight copper wire (9) and the second straight copper wire (10) are polished smoothly.
3. The linear micro-welding-point preparation clamp with the adjustable welding point height is characterized in that the upper ends of the first lower V-shaped block (3) and the second lower V-shaped block (4) are symmetrically and fixedly connected with two trimming positioning pins (14), and pin holes which are correspondingly inserted with the trimming positioning pins (14) are formed in the surface of the upper V-shaped block (13).
4. The linear micro-welding-point preparation clamp with the adjustable welding point height according to claim 1, characterized in that the specific materials of the base (1), the first lower V-shaped block (3), the second lower V-shaped block (4), the upper V-shaped block (13) and the adjusting block (8) are all aluminum.
5. The linear micro-welding spot preparation fixture with adjustable welding spot height according to claim 1, characterized in that the specific material of the expansion block (6) is zinc.
6. The linear micro-welding point preparation fixture with adjustable welding point height according to claim 1, characterized in that the right end face of the first straight copper wire (9) is flush with the right end face of the first lower V-shaped block (3), and the left end face of the second straight copper wire (10) is flush with the left end face of the second lower V-shaped block (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022373196.2U CN213560432U (en) | 2020-10-22 | 2020-10-22 | Linear micro-welding-point preparation clamp with adjustable welding point height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022373196.2U CN213560432U (en) | 2020-10-22 | 2020-10-22 | Linear micro-welding-point preparation clamp with adjustable welding point height |
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| Publication Number | Publication Date |
|---|---|
| CN213560432U true CN213560432U (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022373196.2U Active CN213560432U (en) | 2020-10-22 | 2020-10-22 | Linear micro-welding-point preparation clamp with adjustable welding point height |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213560432U (en) |
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2020
- 2020-10-22 CN CN202022373196.2U patent/CN213560432U/en active Active
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