CN214043623U - Universal packaging process fastening and accurate positioning device for DIP shell - Google Patents
Universal packaging process fastening and accurate positioning device for DIP shell Download PDFInfo
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- CN214043623U CN214043623U CN202023149174.4U CN202023149174U CN214043623U CN 214043623 U CN214043623 U CN 214043623U CN 202023149174 U CN202023149174 U CN 202023149174U CN 214043623 U CN214043623 U CN 214043623U
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Abstract
The utility model discloses a general encapsulation process fastening and accurate positioning device to DIP shell belongs to DIP shell encapsulation technical field. The device includes main objective table, movable positioning frame and positioning bolt, wherein: the main objective table is provided with a bearing boss, the bearing boss is provided with a vacuum adsorption hole and a reinforcement groove, and the lower end of the vacuum adsorption hole is communicated with the air guide groove; the movable positioning frame is a strip-shaped structure with rectangular bulges at two ends, the DIP shells are arranged in a plurality of rows along the direction of the movable positioning frame, and two sides of each row of DIP shells placed on the bearing boss are respectively limited by one movable positioning frame; the movable positioning frame is fixed on the main objective table through positioning bolt holes at two ends of the movable positioning frame. The utility model provides a general encapsulation process fastening and accurate positioning device to DIP shell sets up through the analysis shell with the principle of accurate positioning, refines its universal characteristic, has designed universal fixturing and has realized packaging technology.
Description
Technical Field
The utility model relates to a DIP shell encapsulation technical field, concretely relates to general encapsulation process fastening and accurate positioning device to DIP shell.
Background
The DIP housing is a relatively common ceramic housing and is often used for highly reliable packaging of integrated circuits. The integrated circuit packaging process generally includes several typical process steps of wafer dicing, dispensing, die bonding, and sealing. The shell of the integrated circuit is required to be fastened and accurately positioned by dispensing, sticking and bonding, and in the traditional packaging process, because the types of 3 devices are different and the work tables are different, a unique fastening device is required to be customized in each process so as to accurately position the shell, and the chip and the shell are conveniently applied with various mechanical stress, heat and ultrasonic effects through the devices. First, the jig needs to be designed for different DIP forms, and different pin numbers and different pin spans require different assembly designs. The same housing form requires different assembly designs when the glue dispensing tabs are engaged.
SUMMERY OF THE UTILITY MODEL
Need characteristics such as anchor clamps are many, kind is many, the structure is complicated to current electron packaging in-process, the utility model provides a fastening of general packaging process and accurate positioning device to the DIP shell, through the principle that analysis shell was set up and accurate positioning, refine its universal characteristic, realized accomplishing typical process with a general anchor clamps in packaging process.
In order to achieve the above object, the utility model adopts the following technical scheme:
a universal packaging process fastening and precision positioning apparatus for a DIP housing, the apparatus comprising a main stage, a movable positioning frame and a positioning bolt, wherein: the upper surface of the main objective table is provided with a plurality of strip-shaped bearing bosses which are arranged in parallel and used for bearing the DIP shell; the upper surface of the bearing boss is provided with a vacuum adsorption hole for vacuumizing to adsorb the tube shell; a boosting groove communicated with the vacuum adsorption hole is arranged above the vacuum adsorption hole, the lower end of the vacuum adsorption hole is communicated with an air guide groove arranged on the bottom surface of the main objective table, and the air guide groove is used for providing a vacuum suction source; the movable positioning frame is of a strip-shaped structure with rectangular bulges at two ends, the strip-shaped movable positioning frame is perpendicular to the bearing boss, and the rectangular bulges at two ends of the movable positioning frame are clamped on the side surfaces of the bearing boss at two positions of the upper edge of the main objective table; the DIP shells are arranged in a plurality of rows along the direction of the strip-shaped movable positioning frame, the movable positioning frames are multiple, two sides of each row of DIP shells placed on the bearing boss are respectively limited by one movable positioning frame, and the centers of the DIP shells positioned on the same row are positioned on the same straight line; and rectangular bulges at two ends of the movable positioning frame are respectively provided with 1 positioning bolt hole for being matched with a positioning bolt to fix the movable positioning frame on the main objective table.
Two sides of each bearing boss are sequentially provided with a groove I and a groove II which are used for bearing DIP shells with different spans; the span of the first group of grooves I is 15.24mm, and the span of the second group of grooves II is 7.62 mm; the depth range of the two groups of grooves is 8 mm-10 mm.
The width of groove I and the width of groove II can be the same or different, but the width of groove I and groove II all need be greater than shell pin thickness to guarantee can not fish tail pin when placing and taking out the DIP shell.
The diameter range of the vacuum adsorption hole is 2 mm-3 mm, the shape of the force increasing groove at the upper end of the vacuum adsorption hole is square, circular, triangular or rhombic, and the circle center of the force increasing groove is overlapped with that of the vacuum adsorption hole.
The diameter range of the force increasing groove is 4 mm-5 mm.
The air guide groove is connected with a vacuum hole on a working table of the glue dispensing, sticking and bonding equipment in the packaging process, and provides vacuum suction for the main objective table A and the DIP shell positioned on the main objective table A.
The air guide groove requires that the flatness of the bottom surface of the main objective table is not more than 0.2 so as to ensure vacuum suction.
The main objective table, the movable positioning frame and the positioning bolt are made of copper, aluminum or steel materials.
The universal packaging process fastening and accurate positioning method for the DIP shell by utilizing the device comprises a preparation process, a universal process, a curing process and a cleaning process; the method specifically comprises the following steps:
(1) the preparation process comprises the following steps: assembling a movable positioning frame, installing the movable positioning frame on a main objective table, adjusting the distance according to the size (length) of the DIP shell to enable the distance to be 0.1-0.4 mm larger than the length S of the tube shell, and ensuring that the center of the tube shell is overlapped with the vacuum adsorption hole, wherein the deviation is not more than 2 mm; after the position is found, each positioning bolt is screwed down to fix the movable positioning frame;
(2) after the movable positioning frame is assembled, the DIP shell is placed on the boss, the pipe shell pipe leg with the span of 15.24mm is placed in the groove I, the pipe shell pipe leg with the span of 7.62mm is placed in the groove II, the lower surface of the DIP shell is in contact with the upper surface of the boss, and the orientation of all the DIP shells is kept consistent;
(3) the general process is as follows: placing the main objective table on the equipment workbench, connecting the vacuum hole of the workbench with the air guide groove of the main objective table after placement, wherein the surface flatness of the equipment workbench is not lower than that of the lower surface of the main objective table; starting equipment vacuum, operating an equipment working program, closing the equipment vacuum, and taking down the main objective table;
(4) and (3) curing process: placing the main objective table A with the DIP shell in a curing equipment oven, operating a curing program of the adhesive, taking out the main objective table A after the program is operated and the oven is cooled to be below 100 ℃, and cooling to room temperature; for higher curing temperature, the DIP pipe shell needs to be taken down from the main objective table, the pipe shell is independently placed into a tray, and then the tray is placed into an oven to cure the colloid;
(5) cleaning: the DIP pipe shell clamp needs to be cleaned regularly, and the cleaning frequency is 1-2 weeks.
The cleaning method in the step (5) comprises the following steps: placing the main objective table and the movable positioning frame in an acetone solution, carrying out ultrasonic cleaning for 3 minutes, placing the main objective table and the movable positioning frame in an ethanol solution, carrying out ultrasonic cleaning for 3 minutes, washing the main objective table and the movable positioning frame in deionized water for 1 minute, washing the main objective table and the movable positioning frame in ethanol for 1 minute by using ethanol, and dehydrating; and (3) putting the main objective table and the movable positioning frame into a 110 ℃ oven for drying for 1 hour.
The utility model relates to a principle and beneficial effect as follows:
the utility model provides a general encapsulation process fastening and accurate positioning device and method to DIP shell, through the principle that analysis shell fastened and accurate positioning, refine its universal characteristic, designed universal fixturing and realized packaging technology.
Drawings
Fig. 1 is the overall structure schematic diagram of the clamp of the present invention.
Fig. 2 is a perspective view of the main stage in the clamp of the present invention.
Fig. 3 is the schematic view of the bottom structure of the main stage in the fixture of the present invention.
In the figure: 1-a main stage; 2-a movable positioning frame; 3-positioning the bolt; 4-carrying the boss; 5-groove II; 6-groove I; 7-vacuum adsorption holes; 8-a force increasing groove; 9-air guide groove.
Detailed Description
For further understanding, the present invention will be described with reference to the following examples, which are provided for illustrative purposes only and are not intended to limit the scope of the present invention.
The utility model provides a general encapsulation process fastening and accurate positioning device to DIP shell, as shown in fig. 1-3, the device includes main objective table 1, movable positioning frame 2 and positioning bolt 3, wherein: the upper surface of main objective table is equipped with a plurality of parallel strip of arranging and bears boss 4 for bear the weight of the DIP shell, and every bears the appearance structure of boss and all is the same.
The center of the upper surface of the bearing boss is provided with a vacuum adsorption hole 7 for vacuum pumping to adsorb the tube shell.
A force increasing groove 8 communicated with the vacuum adsorption hole 7 is arranged above the vacuum adsorption hole 7, and the diameter of the force increasing groove is 4-5 mm; the lower end of the vacuum adsorption hole is communicated with an air guide groove 9 arranged on the bottom surface of the main objective table, and the air guide groove is used for providing a vacuum suction source.
The movable positioning frame is of a strip-shaped structure with rectangular bulges at two ends, the strip-shaped movable positioning frame is perpendicular to the bearing boss, and the rectangular bulges at two ends of the movable positioning frame are clamped on the side surfaces of the bearing boss at two positions of the upper edge of the main objective table; the DIP shell is arranged in a plurality of rows along the direction of the strip-shaped movable positioning frame, the movable positioning frames are a plurality of, the two sides of each row of DIP shell placed on the bearing boss respectively use one movable positioning frame to perform limiting action, and the centers of the DIP shells positioned on the same row are positioned on the same straight line.
And rectangular bulges at two ends of the movable positioning frame are respectively provided with 1 positioning bolt hole for being matched with a positioning bolt to fix the movable positioning frame on the main objective table.
Two sides of each bearing boss are sequentially provided with a groove I6 (near side of the boss) and a groove II 5 (far side of the boss) for bearing DIP shells with different spans; the general DIP shell has two spans of 15.24mm and 7.62mm, so that the span of the first group of grooves I is 15.24mm, and the span of the second group of grooves II is 7.62 mm; the depth of the two groups of grooves ranges from 8mm to 10mm, and the depth of the grooves is preferably 8.5 mm.
The width of slot I and the width of slot II can be the same or different, but its width all need be greater than shell pin thickness to guarantee can not the fish tail pin when placing and taking out the DIP shell, the scope of general pin width is 0.2mm-0.3mm, in order to embody the utility model discloses a commonality, the width of slot I is 0.5mm, and the width of slot II is 3.0 mm.
The diameter range of the vacuum adsorption holes is 2 mm-3 mm, and the diameter adopted by the utility model is 3 mm; the force increasing groove at the upper end of the vacuum adsorption hole is used for increasing the adsorption area and improving the vacuum adsorption force; the shape of the force increasing groove can be square, circular, triangular or rhombic, and the like, the utility model discloses preferred circular, its centre of a circle overlaps with the center of a circle of vacuum adsorption hole.
The diameter range of the force increasing groove is 4 mm-5 mm, and the diameter of the force increasing groove is preferably 4 mm.
The air guide groove is connected with the vacuum holes on the glue dispensing, the sticking sheet and the bonding equipment workbench in the packaging process, provides vacuum suction for the main objective table and the DIP shell positioned on the main objective table, has the vacuum degree of-25 mBar- — 70mBar, and the undersized vacuum can lead to the movement of the whole main objective table or the DIP shell in the process engineering due to the fixation, the utility model discloses preferred-50 mBar.
The air guide groove requires that the flatness of the bottom surface of the main objective table is not more than 0.2 at most so as to ensure vacuum suction.
The main stage, the movable positioning frame and the positioning bolt are made of copper, aluminum or steel, preferably aluminum.
The universal packaging process fastening and accurate positioning method for the DIP shell by utilizing the device comprises a preparation process, a universal packaging process, a curing process and a cleaning process; the method specifically comprises the following steps:
(1) the preparation process comprises the following steps: assembling a movable positioning frame, installing the movable positioning frame on a main objective table, adjusting the distance according to the size (length) of the DIP shell to enable the distance to be 0.1-0.4 mm larger than the length S of the tube shell, and ensuring that the center of the tube shell is overlapped with the vacuum adsorption hole, wherein the deviation is not more than 2 mm; after the position is found, each positioning bolt is screwed down to fix the movable positioning frame.
(2) After the movable positioning frame is assembled, the DIP shell is placed on the boss, the pipe shell pipe leg with the span of 15.24mm is placed in the groove I, the pipe shell pipe leg with the span of 7.62mm is placed in the groove II, the lower surface of the DIP shell is in contact with the upper surface of the boss, and the orientation of all the DIP shells is kept consistent;
(3) the general process is as follows: placing the main objective table on the equipment workbench, connecting the vacuum hole of the workbench with the air guide groove of the main objective table after placement, wherein the surface flatness of the equipment workbench is not lower than that of the lower surface of the main objective table; starting equipment vacuum, operating an equipment working program, closing the equipment vacuum, and taking down the main objective table;
(4) and (3) curing process: placing the main objective table with the DIP shell in a curing equipment oven, operating a curing program of the adhesive, taking out the main objective table after the oven is cooled to be below 100 ℃ after the program is operated, and cooling to room temperature; for higher curing temperature, the DIP pipe shell needs to be taken down from the main objective table, the pipe shell is independently placed into a tray, and then the tray is placed into an oven to cure the colloid;
(5) cleaning: the DIP pipe shell clamp needs to be cleaned regularly, and the cleaning frequency is 1-2 weeks.
The cleaning method comprises the following steps: placing the main objective table and the movable positioning frame in an acetone solution, carrying out ultrasonic cleaning for 3 minutes, placing the main objective table and the movable positioning frame in an ethanol solution, carrying out ultrasonic cleaning for 3 minutes, washing the main objective table and the movable positioning frame in deionized water for 1 minute, washing the main objective table and the movable positioning frame in ethanol for 1 minute by using ethanol, and dehydrating. And (3) putting the main objective table and the movable positioning frame into a 110 ℃ oven for drying for 1 hour.
Claims (8)
1. A universal packaging process fastening and precision positioning device for a DIP housing, characterized by: the device includes main objective table, movable positioning frame and positioning bolt, wherein: the upper surface of the main objective table is provided with a plurality of strip-shaped bearing bosses which are arranged in parallel and used for bearing the DIP shell; the upper surface of the bearing boss is provided with a vacuum adsorption hole for vacuumizing to adsorb the tube shell; a boosting groove communicated with the vacuum adsorption hole is arranged above the vacuum adsorption hole, the lower end of the vacuum adsorption hole is communicated with an air guide groove arranged on the bottom surface of the main objective table, and the air guide groove is used for providing a vacuum suction source; the movable positioning frame is of a strip-shaped structure with rectangular bulges at two ends, the strip-shaped movable positioning frame is perpendicular to the bearing boss, and the rectangular bulges at two ends of the movable positioning frame are clamped on the side surfaces of the bearing boss at two positions of the upper edge of the main objective table; the DIP shells are arranged in a plurality of rows along the direction of the strip-shaped movable positioning frame, the movable positioning frames are multiple, two sides of each row of DIP shells placed on the bearing boss are respectively limited by one movable positioning frame, and the centers of the DIP shells positioned on the same row are positioned on the same straight line; and rectangular bulges at two ends of the movable positioning frame are respectively provided with 1 positioning bolt hole for being matched with a positioning bolt to fix the movable positioning frame on the main objective table.
2. The universal packaging process fastening and precision positioning apparatus for a DIP housing of claim 1, wherein: two sides of each bearing boss are sequentially provided with a groove I and a groove II which are used for bearing DIP shells with different spans; the span of the first group of grooves I is 15.24mm, and the span of the second group of grooves II is 7.62 mm; the depth range of the two groups of grooves is 8 mm-10 mm.
3. The universal packaging process fastening and precision positioning apparatus for a DIP housing of claim 2, wherein: the width of groove I and the width of groove II can be the same or different, but the width of groove I and groove II all need be greater than shell pin thickness to guarantee can not fish tail pin when placing and taking out the DIP shell.
4. The universal packaging process fastening and precision positioning apparatus for a DIP housing of claim 1, wherein: the diameter range of the vacuum adsorption hole is 2 mm-3 mm, the shape of the force increasing groove at the upper end of the vacuum adsorption hole is square, circular, triangular or rhombic, and the circle center of the force increasing groove is overlapped with that of the vacuum adsorption hole.
5. The universal packaging process fastening and precision positioning apparatus for a DIP housing of claim 4, wherein: the diameter range of the force increasing groove is 4 mm-5 mm.
6. The universal packaging process fastening and precision positioning apparatus for a DIP housing of claim 1, wherein: the air guide groove is connected with a vacuum hole on a working table of the glue dispensing, sticking and bonding equipment in the packaging process, and provides vacuum suction for the main objective table A and the DIP shell positioned on the main objective table A.
7. The universal packaging process fastening and precision positioning apparatus for a DIP housing of claim 6, wherein: the air guide groove requires that the flatness of the bottom surface of the main objective table is not more than 0.2 so as to ensure vacuum suction.
8. The universal packaging process fastening and precision positioning apparatus for a DIP housing of claim 1, wherein: the main objective table, the movable positioning frame and the positioning bolt are made of copper, aluminum or steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023149174.4U CN214043623U (en) | 2020-12-24 | 2020-12-24 | Universal packaging process fastening and accurate positioning device for DIP shell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023149174.4U CN214043623U (en) | 2020-12-24 | 2020-12-24 | Universal packaging process fastening and accurate positioning device for DIP shell |
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| CN214043623U true CN214043623U (en) | 2021-08-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115090491A (en) * | 2022-07-13 | 2022-09-23 | 北京无线电测量研究所 | Microminiature high-density slide mounting tool and mounting method |
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2020
- 2020-12-24 CN CN202023149174.4U patent/CN214043623U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115090491A (en) * | 2022-07-13 | 2022-09-23 | 北京无线电测量研究所 | Microminiature high-density slide mounting tool and mounting method |
| CN115090491B (en) * | 2022-07-13 | 2024-04-26 | 北京无线电测量研究所 | Microminiature high-density slide glass pasting tool and pasting method |
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