CN204566260U - A kind of Micro-role Drilling device of flexible printed circuit board - Google Patents
A kind of Micro-role Drilling device of flexible printed circuit board Download PDFInfo
- Publication number
- CN204566260U CN204566260U CN201420864083.4U CN201420864083U CN204566260U CN 204566260 U CN204566260 U CN 204566260U CN 201420864083 U CN201420864083 U CN 201420864083U CN 204566260 U CN204566260 U CN 204566260U
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- circuit board
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- temperature
- flexible circuit
- air injection
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Abstract
The utility model is a kind of Micro-role Drilling device of flexible printed circuit board.Include cover plate, backing plate, cool air injection device, wherein micro-brill is installed on main shaft, backing plate is fixed on platen, and be positioned at the below of micro-brill, flexible circuit board is placed on backing plate, cover plate is placed in the end face of flexible circuit board, cool air injection device carries out cool air injection to flexible circuit board, to maintain the cryogenic temperature of flexible circuit board, cool air injection device is connected with source of the gas by flow valve, temperature measuring equipment detects temperature when micro-brill gets out, the signal output part of temperature measuring equipment is connected with the signal input part of control device, the signal output part of control device is connected with flow valve, and the gas output of cool air injection device is adjusted according to real time temperature.The utility model can effectively reduce drilling temperature, effectively avoids occurring boring dirty phenomenon in hole, and improve drilling quality, and structure is simple, convenient and practical, easy to operate, production cost is low.
Description
Technical field
The utility model is a kind of Micro-role Drilling device of flexible printed circuit board, belongs to the innovative technology of the Micro-role Drilling device of flexible printed circuit board.
Background technology
To flexible circuit board (Flexible Printed Circuit Board, be called for short FPCB) when carrying out Micro-role Drilling, in Micro-role Drilling process, usually because drilling cuttings tap can be deposited in outward in hole not in time, and because high temperature during drilling causes drilling cuttings and hole wall to adhere to, cause in hole and bore dirty phenomenon.The drilling temperature of micro-brill drilling is normally formed by the cumulative of the heat produced in drilling process.Along with the technical requirement of market to flexible circuit board product is more and more higher, the number of plies of flexible circuit board is more and more, live width and line-spacing is more and more narrow, aperture also can be more and more less, and this just proposes higher and stricter requirement to capillary processing and the quality of processing micropore.
Capillary processing method traditional at present there will be in serious hole bores dirty phenomenon, and according to the study, sheet material is thicker, and aperture is less, and the drilling cuttings stayed is more, thus to form in consent, hole the critical defects such as open circuit; And to bore dirty removal be a comparatively complicated operation in production reality.For improving this phenomenon, have in currently available technology and adopt cooling fluid or cooling solid to continue cooling at processing site to working position, the frozen liq adopted is liquid nitrogen etc., and price comparison is expensive, and production cost is high, to be difficult to accept by manufacturer.
Summary of the invention
The purpose of this utility model is consider the problems referred to above and provide one effectively can reduce drilling temperature, effectively avoids occurring boring dirty phenomenon in hole, improves the Micro-role Drilling device of the flexible printed circuit board of drilling quality.The utility model structure is simple, and convenient and practical, easy to operate, production cost is low.
The technical solution of the utility model is: the Micro-role Drilling device of flexible printed circuit board of the present utility model, include cover plate, backing plate, cool air injection device, wherein micro-brill is installed on main shaft, backing plate is fixed on platen, and be positioned at the below of micro-brill, flexible circuit board is placed on backing plate, cover plate is placed in the end face of flexible circuit board, cool air injection device carries out cool air injection to flexible circuit board, to maintain the cryogenic temperature of flexible circuit board, cool air injection device is connected with source of the gas by flow valve, temperature measuring equipment detects temperature when micro-brill gets out, the signal output part of temperature measuring equipment is connected with the signal input part of control device, the signal output part of control device is connected with flow valve, and the gas output of cool air injection device is adjusted according to real time temperature.
The utility model, in flexible circuit board Micro-role Drilling process, adopts the mode of low-temperature cold wind to cool flexible circuit board, makes freezing flexible circuit board keep lower temperature on the one hand, makes flexible circuit board continue to keep low temperature; Avoid Yin Wendu to raise need repeated freezing and repeatedly get flexible circuit board from lathe dress; In flexible circuit board drilling process, play cooling effect on the other hand, reduce drilling temperature to a great extent; In addition, the utility model is Real-time Collection drilling temperature in drilling process, according to the drilling temperature of Real-time Collection, by controlling the uninterrupted of flow valve, the uninterrupted of timely change cold wind, to reach cooling object, simultaneously the environment temperature of processing site remains at 20 ± 5 DEG C, decreases the sheet material temperature causing to cool because of environment temperature and changes; Freezing for sheet material and low-temperature cold wind technology combinationally uses by the utility model, by the collection of temperature data in drilling process and analysis, reduces the temperature in drilling process to greatest extent; Thus it is dirty to effectively reduce brill in hole, microvia quality improves greatly.Simultaneously, the device structure that the utility model uses is simple, cost is low, is easy to realize, and the cold air used in the utility model is compressed air, cheap, economic environmental protection, and the performance of not broken ring flexible circuit board, processing method of the present utility model is simple and convenient, cost is low, can widely use in PCB drilling industry.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the design sketch of the utility model embodiment;
Fig. 3 is the design sketch of embodiment of the present utility model.
Detailed description of the invention
Embodiment:
Structural representation of the present utility model as shown in Figure 1, the Micro-role Drilling device of flexible printed circuit board of the present utility model, include cover plate 3, backing plate 5, cool air injection device, wherein micro-brill 2 is installed on main shaft 1, backing plate 5 is fixed on platen 6, and be positioned at the below of micro-brill 2, flexible circuit board 4 is placed on backing plate 5, cover plate 3 is placed in the end face of flexible circuit board 4, cool air injection device carries out cool air injection to flexible circuit board 4, to maintain the cryogenic temperature of flexible circuit board 4, cool air injection device is connected with source of the gas by flow valve 8, gas output is kept to stablize, temperature measuring equipment 14 detects temperature when micro-brill 2 gets out, the signal output part of temperature measuring equipment 14 is connected with the signal input part of control device 13, the signal output part of control device 13 is connected with flow valve 8, and the gas output of cool air injection device is adjusted according to real time temperature.
In the present embodiment, above-mentioned cool air injection device includes the first cold air blasting gun 7, second cold air blasting gun 9, the 3rd cold air blasting gun 15, first cold air blasting gun 7 pairs flexible circuit board 4 is just dried at the machining area 11 of drilling by micro-brill 2, reduce the temperature of the drill point raised because of boring, the machining area 10 of the second cold air blasting gun 9 pairs of flexible circuit boards 4 is dried, reduce the heat of drilling process, prevent the temperature conduction because of the machining area 10 of flexible circuit board 4 from affecting the region to be processed 12 of flexible circuit board 4; 3rd cold air blasting gun 15 adjusts cold wind temperature to dry to the region to be processed 12 of flexible circuit board 4, with maintain flexible circuit board 4 hole before cryogenic temperature, the first cold air blasting gun 7, second cold air blasting gun 9, the 3rd cold air blasting gun 15 are all connected with source of the gas by flow valve 8.
In the present embodiment, above-mentioned temperature measuring equipment 14 is infrared measurement of temperature equipment.
The processing method of the Micro-role Drilling device of flexible printed circuit board of the present utility model, comprises the steps:
1) before holing, freezing processing is carried out to flexible circuit board 4, make its temperature reach the lower value of safety storing temperature range;
2) the micro-brill 2 be installed on main shaft 1 is holed on flexible circuit board 4, and micro-brill 2 is in drilling process, and cool air injection device carries out cool air injection to flexible circuit board 4, carries out cold front heavy rain, to maintain the cryogenic temperature of flexible circuit board 4.
3) micro-brill 2 is in drilling process, and the temperature of temperature measuring equipment 14 pairs of drilling processes gathers, and control device 13 is according to the temperature of temperature measuring equipment 14 Real-time Collection, and the constantly openings of sizes of adjustment flow valve 8, to control the cold air flow that cool air injection device sprays.
In the present embodiment, the cold air that above-mentioned cool air injection device sprays is low temperature compressed air, and low temperature compressed air uses low temp cold air device air to be carried out compression cooling.
In the present embodiment, the jetting height of the nozzle of above-mentioned cool air injection device is 10 ± 3mm, and namely the vertical range of nozzle distance jeting area is 10 ± 3mm.
In the present embodiment, above-mentioned flexible circuit board 4 is Kapton flexible copper-clad plate.
In the present embodiment, above-mentioned flexible circuit board 4 puts household freezer into before processing, and its temperature is controlled all the time about (10 ± 5) DEG C.
The utility model is before carrying out Micro-role Drilling to flexible circuit board 4, first carry out freezing to property printed circuit board 4, to be reducedly to hole again after uniform temperature, in the utility model, the storage temperature of flexible circuit board 4 is 5-35 DEG C, is chilled in the temperature of 105 DEG C in the utility model; In boring procedure, adopt cold wind method to cool, to reach the object reducing in drilling temperature, suppression hole and bore dirt and then improve microvia quality simultaneously.
The utility model is Real-time Collection drilling temperature in drilling process, according to the drilling temperature of Real-time Collection, by controlling the uninterrupted of flow valve 8, the uninterrupted of timely change cold wind, to reach cooling object, simultaneously the environment temperature of processing site remains at 20 ± 5 DEG C, decreases the sheet material temperature causing to cool because of environment temperature and changes.
The course of work of the present utility model is as follows: flexible circuit board 4 is put into household freezer, in household freezer, temperature is set to 10 ± 5 DEG C, after placing the time of a hours, the temperature measuring flexible circuit board 4 is about (10 ± 5) DEG C, can take out to be fixed on platen 6 and process, place respectively up and down cover plate 3, backing plate 5 at flexible circuit board 4 during boring carry out auxiliary bore hole.Keep whole Processing Surrounding Temperature for about (20 ± 5) DEG C in boring procedure, detect temperature when micro-brill 2 gets out with temperature measuring equipment 14, and according to the gas output of the temperature adjustment cool air injection device detected in real time.
The parameter that the utility model embodiment uses is as follows: the diameter of micro-brill 2 is 0.3mm, the rotating speed of main shaft 1 is 180krpm, feed speed adopts 200cm/min and 300cm/min two groups, and withdrawing speed is 1800cm/min, and the model of flexible circuit board 4 used is SF305-101820DR.
Fig. 2,3 is depicted as flexible circuit board 4 under identical drilling machined parameters, cold wind processing is adopted to carry out cooling and not adopting the contrast situation of drilling temperature under the type of cooling two kinds of conditions to drilling process, as can be seen from the figure, when adopting cold front heavy rain mode, the temperature of drill bit is all low about 10 DEG C than the temperature of drill bit when not adopting any type of cooling.Illustrate and adopt cold wind mode to cool, greatly can improve drilling temperature during Micro-role Drilling flexible circuit board 4, thus the wearing and tearing to micro-brill 2, the dirty situation of the brill in hole, the improvement of microvia quality plays a key effect.
Claims (5)
1. the Micro-role Drilling device of a flexible printed circuit board, it is characterized in that including cover plate, backing plate, cool air injection device, wherein micro-brill is installed on main shaft, backing plate is fixed on platen, and be positioned at the below of micro-brill, flexible circuit board is placed on backing plate, cover plate is placed in the end face of flexible circuit board, cool air injection device carries out cool air injection to flexible circuit board, to maintain the cryogenic temperature of flexible circuit board, cool air injection device is connected with source of the gas by flow valve, temperature measuring equipment detects temperature when micro-brill gets out, the signal output part of temperature measuring equipment is connected with the signal input part of control device, the signal output part of control device is connected with flow valve, and the gas output of cool air injection device is adjusted according to real time temperature.
2. the Micro-role Drilling device of flexible printed circuit board according to claim 1, it is characterized in that above-mentioned cool air injection device includes the first cold air blasting gun, the second cold air blasting gun, the 3rd cold air blasting gun, first cold air blasting gun is just dried at the machining area of drilling by micro-brill to flexible circuit board, reduce the temperature of the drill point raised because of boring, second cold air blasting gun is dried to the machining area of flexible circuit board, reduces the heat of drilling process; 3rd cold air blasting gun adjustment cold wind temperature is with the region to be processed blowing to flexible circuit board, with maintain flexible circuit board hole before cryogenic temperature, the first cold air blasting gun, the second cold air blasting gun, the 3rd cold air blasting gun are connected with source of the gas respectively by flow valve separately.
3. the Micro-role Drilling device of flexible printed circuit board according to claim 1, is characterized in that above-mentioned temperature measuring equipment is infrared measurement of temperature equipment.
4. the Micro-role Drilling device of the flexible printed circuit board according to any one of claims 1 to 3, it is characterized in that the jetting height of the nozzle of above-mentioned cool air injection device is 10 ± 3mm, namely the vertical range of nozzle distance jeting area is 10 ± 3mm.
5. the Micro-role Drilling device of flexible printed circuit board according to claim 4, is characterized in that above-mentioned flexible circuit board is Kapton flexible copper-clad plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420864083.4U CN204566260U (en) | 2014-12-31 | 2014-12-31 | A kind of Micro-role Drilling device of flexible printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420864083.4U CN204566260U (en) | 2014-12-31 | 2014-12-31 | A kind of Micro-role Drilling device of flexible printed circuit board |
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| Publication Number | Publication Date |
|---|---|
| CN204566260U true CN204566260U (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420864083.4U Withdrawn - After Issue CN204566260U (en) | 2014-12-31 | 2014-12-31 | A kind of Micro-role Drilling device of flexible printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204566260U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104552441A (en) * | 2014-12-31 | 2015-04-29 | 广东工业大学 | Micro-pore drilling device for flexible printed circuit board and processing method thereof |
| CN106003202A (en) * | 2016-07-02 | 2016-10-12 | 上海和鹰机电科技股份有限公司 | Cutting of cutting technology for cutting low-melting-point materials |
-
2014
- 2014-12-31 CN CN201420864083.4U patent/CN204566260U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104552441A (en) * | 2014-12-31 | 2015-04-29 | 广东工业大学 | Micro-pore drilling device for flexible printed circuit board and processing method thereof |
| CN106003202A (en) * | 2016-07-02 | 2016-10-12 | 上海和鹰机电科技股份有限公司 | Cutting of cutting technology for cutting low-melting-point materials |
| CN106003202B (en) * | 2016-07-02 | 2018-07-17 | 长园和鹰智能科技有限公司 | A kind of cutter for cutting low melting material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150819 Effective date of abandoning: 20170503 |
|
| AV01 | Patent right actively abandoned |