CN221127562U - Special fixture in fixed stable PCB board tin spraying technology - Google Patents
Special fixture in fixed stable PCB board tin spraying technology Download PDFInfo
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- CN221127562U CN221127562U CN202322110222.6U CN202322110222U CN221127562U CN 221127562 U CN221127562 U CN 221127562U CN 202322110222 U CN202322110222 U CN 202322110222U CN 221127562 U CN221127562 U CN 221127562U
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- tin spraying
- frame
- movable guide
- guide rail
- tin
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 238000005507 spraying Methods 0.000 title claims abstract description 64
- 238000005516 engineering process Methods 0.000 title claims description 3
- 238000000034 method Methods 0.000 claims abstract description 29
- 230000008569 process Effects 0.000 claims abstract description 24
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model relates to a special fixture for a fixed and stable PCB tin spraying process, which comprises a frame and a net rack, wherein a first tin spraying hanging hole is formed in the front surface of the frame, and guide rails capable of moving left and right are fixed on the upper side and the lower side of the front surface of the frame. The special fixture in the fixed and stable PCB board tin spraying process is characterized in that a frame, a net rack, a left-right movable guide rail, a detachable sliding rail, a movable guide rail transverse bar, a double-layer net rack clamp and the like are arranged, the finished product tin spraying jig is designed into the frame and the net rack, the special fixture is suitable for tin spraying of boards with different board thicknesses, after the PCB board is subjected to appearance testing, scanning interception by an FQC-AVI appearance inspection machine, the quality problems of poor tin coating, high tin and the like are found, nondestructive processing can be carried out through the jig, and the quality anomalies such as crashed and scratch and the like generated in tin spraying processing after the appearance of the finished product are completely avoided, so that the purposes of improving the yield of the finished product tin spraying and reducing the scrapping cost are achieved.
Description
Technical Field
The utility model relates to the technical field of fixtures, in particular to a special fixture for a fixed and stable PCB tin spraying process.
Background
The PCB board is called a printed circuit board, is a basic material for supporting and connecting electronic components, is a sheet, is usually made of a non-conductive substrate material, is covered with a metal conductive layer on the surface, forms a circuit pattern on the PCB board by chemical corrosion or mechanical processing, is used for realizing electric connection between electronic components, and is a surface treatment process commonly used in electronic manufacture, and aims to protect wires and bonding pads on the circuit board and provide good welding performance.
The outer layer circuit of the high multilayer board is designed to be high in density I C, SMD bonding pads and BGA bonding pads, poor tin coating and high tin quality problems are easily caused by surface treatment tin spraying, and as the tin coating is carried out through QA visual inspection, the risk of poor leakage is large, after the detection of interception of appearance, testing and FQC (AVI appearance inspection machine), the process edge of the poor board is already removed through appearance, the finished product set is not protected by the process edge, and quality anomalies such as batch crashed board edge, board corner scratch and the like are easily caused during direct tin spraying and returning, so that the problem of irrecoverable scrapping is solved, and the problem of no effective process control method is the technical problem which is urgently needed to be solved in the current field.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides a special fixture for a fixed and stable PCB tin spraying process, which has the advantages of good clamping effect on the PCB tin spraying reworking, and the like, and solves the problems that the finished product set in the prior art is free of process edge protection, quality anomalies such as batch crashed edges, board corner scratches and the like are extremely easy to occur during direct tin spraying reworking, the special fixture is irreparably scrapped, and an effective process control method is not available.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the special fixture in the fixed and stable PCB board tin spraying process comprises a frame and a net rack, wherein a first tin spraying hanging hole is formed in the front face of the frame, left and right movable guide rails are fixed on the upper side and the lower side of the front face of the frame, detachable slide rails are arranged on the front face of the left and right movable guide rails, up and down movable guide rails are fixed on the left side and the right side of the front face of the frame, and movable guide rail transverse bars are arranged on the front faces of the two up and down movable guide rails;
The front of the net rack is provided with a second tin spraying hanging hole, and double-layer net-shaped frame clamps are fixed between four side inner walls of the net rack.
Further, the number of the detachable sliding rails is not less than two, and the detachable sliding rails are uniformly distributed on the front surface of the sliding rail capable of moving left and right.
Further, the length of the movable guide rail cross bar is equal to the width of the frame, and the first tin spraying hanging hole is formed in the middle of the front face of the frame.
Further, the side of the movable guide rail transverse bar opposite to the guide rail capable of moving up and down is provided with a fixing hole, and the inner peripheral wall of the fixing hole is in threaded connection with a detachable fixing screw.
Further, the second tin spraying hanging hole is formed in the middle of the front face of the net rack, and the diameter of the second tin spraying hanging hole is equal to that of the first tin spraying hanging hole.
Further, the thickness of the net frame is equal to that of the frame, and an anti-sticking coating is fixed on the outer surface of the double-layer net frame.
Compared with the prior art, the technical scheme of the application has the following beneficial effects:
1. The special fixture in the fixed and stable PCB tin spraying process is characterized in that a frame, a net rack, a left-right movable guide rail, a detachable sliding rail, a movable guide rail transverse bar, a double-layer net rack clamp and the like are arranged, the finished tin spraying jig is designed into the frame and the net rack, the special fixture is suitable for tin spraying of boards with different board thicknesses, after the PCB board is subjected to appearance testing, FQC (AVI appearance inspection machine scanning) interception, poor tin coating and high tin quality problems are found, nondestructive processing can be carried out through the fixture, and abnormal quality such as crashed scratch and the like generated in tin spraying treatment after appearance of a finished product is completely avoided, so that the purposes of improving the finished tin spraying yield and reducing the scrapping cost are achieved.
2. According to the special fixture in the fixed and stable PCB tin spraying process, through mutual matching among the frame, the net rack, the left and right movable guide rail, the detachable slide rail, the movable guide rail transverse bar, the double-layer net-shaped frame clamp and the like, different fixtures are used according to the thickness of a finished product plate after different, such as a slide rail fixture with the thickness of a finished product of 1.0 and a steel net frame clamp with the thickness of the finished product of less than or equal to 1.0 mm; the thick plate has better rigidity, and the four corners are fixed in the process of pressure leveling of the tin spraying air knife, so that scratch and collision caused by shaking can not occur; the device can avoid the front and back shaking caused by poor rigidity of the thin plate and pressure leveling of the tin spraying air knife, ensure the uniformity of air pressure by using the net rack, and avoid abnormal quality such as shaking, bumping, wiping and the like.
Drawings
FIG. 1 is a schematic diagram of a frame of the present utility model;
fig. 2 is a schematic diagram of a grid of the present utility model.
In the figure: 1 frame, 101 first tin spraying hanging hole, 102 left and right movable guide rail, 103 detachable slide rail, 104 up and down movable guide rail, 105 movable guide rail horizontal bar, 106 detachable fixing screw, 2 net frame, 201 second tin spraying hanging hole, 202 double-layer net frame clamp.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, a special fixture for a stable fixing process of tin spraying on a PCB board in this embodiment includes a frame 1 and a rack 2, and is characterized in that: the front surface of the frame 1 is provided with a first tin spraying hanging hole 101, the upper side and the lower side of the front surface of the frame 1 are respectively fixed with a left movable guide rail 102 and a right movable guide rail 102, the front surface of the left movable guide rail 102 and the right movable guide rail 102 are respectively provided with a detachable slide rail 103, the finished tin spraying jig is designed into two types of frames 1 and racks 2, and is suitable for tin spraying of plates with different plate thicknesses, after the quality problems of poor tin spraying, high tin and the like are found by scanning interception of a PCB (printed circuit board) through appearance testing, FQC and AVI appearance inspection machine, nondestructive processing can be carried out through the jig, the left side and the right side of the front surface of the frame 1 are respectively fixed with a guide rail 104 capable of moving up and down, the front surfaces of the two guide rails 104 are respectively provided with a movable guide rail transverse bar 105, after the quality problems of poor tin spraying and high tin and the like are found, the nondestructive processing can be carried out through the jig, and the quality anomalies such as crashed and the like generated during tin spraying processing after the appearance of the finished product are completely avoided, thereby the purposes of improving the yield of the finished tin spraying and reducing the scrapping cost are achieved;
Wherein, the second tin spraying hanging hole 201 has been seted up in the front of rack 2, is fixed with double-deck netted frame clamp 202 between the four side inner walls of rack 2, uses rack 2 can guarantee the homogeneity of wind pressure, can not appear also can rock the quality anomaly such as stabbing, wiping.
In this embodiment, the number of the detachable sliding rails 103 is not less than two, and the detachable sliding rails are uniformly distributed on the front surface of the left and right movable sliding rail 102, the length of the movable rail transverse bar 105 is equal to the width of the frame 1, the first tin spraying hanging hole 101 is formed in the middle of the front surface of the frame 1, the side, opposite to the movable rail 104, of the movable rail transverse bar 105 is provided with a fixing hole, the inner peripheral wall of the fixing hole is in threaded connection with a detachable fixing screw 106, the second tin spraying hanging hole 201 is formed in the middle of the front surface of the net rack 2, the diameter of the second tin spraying hanging hole 201 is equal to that of the first tin spraying hanging hole 101, the thickness of the net rack 2 is equal to that of the frame 1, an anti-sticking coating is fixed on the outer surface of the double-layer net rack 202, and different jigs, such as a sliding rail jig for a finished product thickness of 1.0 and a steel net rack clip for a finished product thickness of not more than 1.0mm are used according to the thickness of different finished product plates; the thick plate has better rigidity, and the four corners are fixed in the process of pressure leveling of the tin spraying air knife, so that scratch and collision caused by shaking can not occur; the front and back shaking of the tin spraying air knife in the pressure leveling process due to the poor rigidity of the thin plate is avoided.
The working principle of the embodiment is as follows:
The finished product tin spraying jig is designed into a frame 1 and a net frame 2, is suitable for tin spraying of plates with different plate thicknesses, can be used for carrying out nondestructive processing after the quality problems of poor tin coating, high tin and the like are found by scanning interception of a PCB (printed circuit board) appearance-testing-FQC (field effect transistor) and AVI (automatic voltage indicator) appearance inspection machine, and completely avoids the quality anomalies such as crashed scratch and the like generated during tin spraying treatment after the appearance of the finished product, thereby achieving the purposes of improving the finished product tin spraying yield and reducing the scrapping cost, and using different jigs according to the plate thicknesses of different finished products, such as a sliding rail jig with the finished product thickness of 1.0 and a steel net frame clamp with the finished product thickness of less than or equal to 1.0 mm; the thick plate has better rigidity, and the four corners are fixed in the process of pressure leveling of the tin spraying air knife, so that scratch and collision caused by shaking can not occur; the phenomenon that the front and back shaking occurs in the process of leveling the pressure of the tin spraying air knife due to poor rigidity of the thin plate is avoided, the uniformity of air pressure can be guaranteed by using the net rack 2, and abnormal quality such as shaking, bumping and wiping cannot occur.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Standard parts used in the document of the application can be purchased from market, and can be customized according to the description of the specification and the drawing, the specific connection modes of the parts adopt conventional means such as mature bolts, rivets, welding and the like in the prior art, and the machines, the parts and the equipment adopt conventional models in the prior art.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made hereto without departing from the spirit and principles of the present utility model.
Claims (5)
1. The utility model provides a special fixture in fixed stable PCB board tin spraying technology, includes frame (1) and rack (2), its characterized in that: the front of the frame (1) is provided with a first tin spraying hanging hole (101), the upper side and the lower side of the front of the frame (1) are respectively fixed with a left-right movable guide rail (102), the front of the left-right movable guide rail (102) is provided with a detachable sliding rail (103), the left side and the right side of the front of the frame (1) are respectively fixed with a up-down movable guide rail (104), and the front of the two up-down movable guide rails (104) is provided with a movable guide rail transverse bar (105);
A second tin spraying hanging hole (201) is formed in the front face of the net rack (2), and a double-layer net-shaped rack clamp (202) is fixed between four side inner walls of the net rack (2);
The number of the detachable sliding rails (103) is not less than two, and the detachable sliding rails are uniformly distributed on the front surface of the left and right movable guide rail (102).
2. The special fixture in a fixed stable PCB tin spraying process according to claim 1, wherein: the length of the movable guide rail transverse bar (105) is equal to the width of the frame (1), and the first tin spraying hanging hole (101) is formed in the middle of the front face of the frame (1).
3. The special fixture in a fixed stable PCB tin spraying process according to claim 1, wherein: the side of the movable guide rail transverse bar (105) opposite to the up-down movable guide rail (104) is provided with a fixing hole, and the inner peripheral wall of the fixing hole is in threaded connection with a detachable fixing screw (106).
4. The special fixture in a fixed stable PCB tin spraying process according to claim 1, wherein: the second tin spraying hanging hole (201) is formed in the middle of the front face of the net rack (2), and the diameter of the second tin spraying hanging hole (201) is equal to that of the first tin spraying hanging hole (101).
5. The special fixture in a fixed stable PCB tin spraying process according to claim 1, wherein: the thickness of the net frame (2) is equal to that of the frame (1), and an anti-sticking coating is fixed on the outer surface of the double-layer net frame clamp (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322110222.6U CN221127562U (en) | 2023-08-07 | 2023-08-07 | Special fixture in fixed stable PCB board tin spraying technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322110222.6U CN221127562U (en) | 2023-08-07 | 2023-08-07 | Special fixture in fixed stable PCB board tin spraying technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221127562U true CN221127562U (en) | 2024-06-11 |
Family
ID=91345357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322110222.6U Active CN221127562U (en) | 2023-08-07 | 2023-08-07 | Special fixture in fixed stable PCB board tin spraying technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221127562U (en) |
-
2023
- 2023-08-07 CN CN202322110222.6U patent/CN221127562U/en active Active
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