CN108901120A - A kind of FPC reinforcing chip automatic joint device - Google Patents
A kind of FPC reinforcing chip automatic joint device Download PDFInfo
- Publication number
- CN108901120A CN108901120A CN201810673406.4A CN201810673406A CN108901120A CN 108901120 A CN108901120 A CN 108901120A CN 201810673406 A CN201810673406 A CN 201810673406A CN 108901120 A CN108901120 A CN 108901120A
- Authority
- CN
- China
- Prior art keywords
- material strip
- reinforcement material
- fpc
- mounting rack
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0277—Bendability or stretchability details
- H05K1/028—Bending or folding regions of flexible printed circuits
- H05K1/0281—Reinforcement details thereof
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0058—Laminating printed circuit boards onto other substrates, e.g. metallic substrates
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The present invention discloses a kind of FPC reinforcing chip automatic joint device, using reinforcement material strip retractable unit conveying reinforcement material strip and recycling scrap belt, reinforcement material strip is punched to obtain the reinforcing chip of individual using reinforcement material strip punching unit, individual reinforcing chip is fitted in using cooperation vision positioning unit in the mobile FPC fitting platform of horizontal plane the reservation position of FPC, it is scraped using gum and cuts the part gum (the corresponding preset redundancy section of reinforcing chip) that component strikes off reinforcement material strip, hence for the reinforcing chip of disqualified upon inspection after fitting, can very easily tear off by hand.It is compared with the prior art, operation of the present invention is simple, easy to use.
Description
Technical field
The present invention relates to flexible circuit board technical field of processing equipment, in particular to a kind of automatic stiffening material for FPC
The punching of band and abutted equipment.
Background technique
FPC is the abbreviation of Flexible Printed Circuit, also known as flexible circuit board, flexible printed circuit board or is scratched
Property wiring board, for the products such as mobile phone, laptop, PDA and LCM.FPC Distribution density is high, light-weight, thickness is thin, is adding
It easily gives a discount during work, cracking.Lamination reinforcement material (stiffener) can reinforce its mechanical strength, and the surface of part is facilitated to paste
Dress.Reinforced rubber sheet type mainly has PET, PI or metal plate.
Usually when mounting stiffening plate, web-like reinforcement sheet feeding belt is first punched into monomer stiffening plate, then by monomer reinforcing chip
(plate) is mounted on FPC (i.e. false mend), by after the assay was approved, heating allow the gum of monomer stiffening plate to solidify and securely paste and
Complete reinforcement.Existing FPC reinforcing chip automatic attaching equipment, can be with roll-to-roll folding and unfolding reinforcement sheet feeding belt, automatic cutting and fitting
Monomer reinforcing chip, however the unqualified fitting position after examining, need to tear the reinforcing chip of fitting, because being bonded completely,
Operation is not convenient enough.
Summary of the invention
The present invention provides a kind of FPC reinforcing chip automatic joint device, it is intended to solve disqualified upon inspection existing for existing equipment
The fitting position technical problem not convenient enough in the reinforcing chip for tearing fitting.
In order to solve the above-mentioned technical problem, the technical scheme is that：A kind of FPC reinforcing chip automatic joint device, packet
It includes for conveying reinforcement material strip and recycling the reinforcement material strip retractable unit of scrap belt, positioned at the landline of the reinforcement material strip
Reinforcement material strip punching unit, the landline positioned at the reinforcement material strip and the reinforcement material strip of side are punched below unit
FPC is bonded platform, and the vision positioning unit for FPC fitting platform location control；The FPC fitting platform is water
It equals the two-dimensional movement platform of setting and is mounted on the base, mounting rack is fixedly installed on the pedestal, the reinforcement material strip is received
It puts unit, reinforcement material strip punching unit and the vision positioning unit to be fixed on the mounting rack, the benefit
Strong material strip retractable unit includes scraping for striking off the gum of reinforcement material strip part gum to cut component.
Further, the reinforcement material strip retractable unit further includes the let off roll being arranged on the mounting rack, unreels drive
Dynamic roller, back note wind-up roll, waste material wind-up roll, winding driven roller and several guide rollers；The let off roll described unreels driving
Roller and the back note wind-up roll are located at the side of reinforcement material strip punching unit, the waste material wind-up roll and winding driving
Roller is located at the other side of reinforcement material strip punching unit, described to unreel driven roller, the winding driven roller, back note winding
Roller and the waste material wind-up roll are sequentially connected driving motor；It is described to unreel driven roller and the winding driven roller contradicts connection
Driven roller pressing mechanism, the driven roller pressing mechanism include the pressurization branch being movably fixedly mounted on the mounting rack
Frame, both ends be fixedly connected the pressurization main shaft of the pressurizing frame, be rotationally mounted side by side on it is described pressurization main shaft on it is several
Pressure roller；The gum scrape cut component by be arranged scrape grooving, with the pressure roller outer diameter is consistent, is fixedly mounted on institute
Several scrape stated on pressurization main shaft cuts wheel composition.
Further, further include removing component for separating the back note of reinforcement material strip, the removing component is fixed on institute
It states on mounting rack and close to the let off roll.
Further, further include strainer for being tensioned reinforcement material strip, the strainer is fixed on mounting rack
It is upper and close to the waste material wind-up roll.
Further, reinforcement material strip is punched unit) it includes die cutting die and drives the punch assembly of the die cutting die, it is described
Punch assembly includes stamping cylinder, the die cutting die include E type mounting rack and with the E type mounting rack elastic connection 1~2
A punching pin；The top of the punching pin is the cylindrical body through the E type mounting rack top cross plate with card cap, under the punching pin
Portion is the cylinder for subscribing cross sectional shape and the transverse slat in the middle part of the E type mounting rack, E type mounting rack bottom transverse slat are equipped with
With the mutually matched through-hole in lower part of the punching pin, the top surface of the card cap and the E type mounting rack top cross plate passes through spring
It is fixedly connected, the top surface of E type mounting rack bottom transverse slat and the top surface of two closest guide rollers are contour.
Further, the lower top of the punching pin has through-hole, and the through-hole passes through transverse slat in the middle part of the E type mounting rack
Horizontal direction through-hole be connected to vacuum pump.
Further, the FPC fitting platform is equipped with for fixing the absorption positioning mechanism of FPC and for heating FPC's
Heating mechanism.
Further, the vision positioning unit is the CCD camera being electrically connected with control host, the control host packet
Include the visual signal processing unit for handling the CCD camera signal and the fortune for controlling FPC fitting platform (300)
Dynamic control unit, heat control unit and adsorption control units.
The present invention is punched single using reinforcement material strip retractable unit conveying reinforcement material strip and recycling scrap belt using reinforcement material strip
Member is punched reinforcement material strip to obtain the reinforcing chip of individual, pastes using cooperation vision positioning unit, in the mobile FPC of horizontal plane
The reservation position that platform makes individual reinforcing chip be fitted in FPC is closed, is scraped using gum and cuts the part back that component strikes off reinforcement material strip
Glue (corresponding the preset redundancy section of reinforcing chip), hence for after fitting, the reinforcing chip of disqualified upon inspection, being capable of very easily hand
Work is torn off.It is compared with the prior art, operation of the present invention is simple, easy to use.
Detailed description of the invention
Fig. 1 is the perspective view of the embodiment of the present invention,
Fig. 2 is another view stereo figure of the embodiment of the present invention,
Fig. 3 is the top view of the embodiment of the present invention,
Fig. 4 is the schematic diagram of driven roller pressing mechanism in the embodiment of the present invention,
Fig. 5 is the side view of Fig. 4,
Fig. 6 is that gum is scraped and cuts one of component and scrape the schematic diagram for cutting wheel in the embodiment of the present invention,
Fig. 7 is two perspective views that component is punched in the embodiment of the present invention.
In figure：
100- reinforcement material strip retractable unit 200- reinforcement material strip is punched unit
120- let off roll 210- die cutting die
130- unreels driven roller 211- punching pin
140- carries on the back note wind-up roll 212-E type mounting rack
150- waste material wind-up roll 222a-E type mounting rack top cross plate
160- winds transverse slat in the middle part of driven roller 222b-E type mounting rack
170- guide roller 222c-E type mounting rack bottom transverse slat
180- driven roller pressing mechanism 220- punch assembly
181- pressurizing frame 300-FPC is bonded platform
182- pressurization main shaft 400- vision positioning unit
183- pressure roller 901- pedestal
184-, which is scraped, cuts wheel 902- mounting rack
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing.It should be noted that for
The explanation of these embodiments is used to help understand the present invention, but and does not constitute a limitation of the invention.In addition, disclosed below
The each embodiment of the present invention involved in technical characteristic can be combined with each other as long as they do not conflict with each other.
Referring to Fig. 1~7, one embodiment of the present of invention includes：A kind of FPC reinforcing chip automatic joint device, including be used for
It conveys reinforcement material strip and recycles the reinforcement material strip retractable unit 100 of scrap belt, above the landline of the reinforcement material strip
Reinforcement material strip punching unit 200, the landline positioned at the reinforcement material strip and reinforcement material strip punching unit 200 lower section
FPC is bonded platform 300, and the vision positioning unit 400 of flat 300 location controls is bonded for FPC；FPC is bonded platform 300
It horizontally disposed two-dimensional movement platform and is mounted on pedestal 901, mounting rack 902, reinforcement material strip is fixedly installed on pedestal 901
Retractable unit 100, reinforcement material strip punching unit 200 and vision positioning unit 400 are fixed on mounting rack 902, special
Sign is：Reinforcement material strip retractable unit 100 includes scraping for striking off the gum of reinforcement material strip part gum to cut component.
Specifically, FPC is bonded platform and uses the three-shaft linkage mode of accurate turbine and worm, 360 degree rotation platform, FPC's
The mode of manually or mechanically hand can be used in folding and unfolding.
The embodiment conveys reinforcement material strip and recycling scrap belt using reinforcement material strip retractable unit 100, using reinforcement material strip
Punching unit 200 is punched reinforcement material strip to obtain the reinforcing chip of individual, using 400 yuan of vision positioning list of cooperation, in level
The reservation position that the mobile FPC fitting platform 300 in face makes individual reinforcing chip be fitted in FPC is scraped using gum and cuts component and strike off
The part gum of reinforcement material strip corresponds to the preset redundancy section of reinforcing chip, hence for after fitting, the reinforcing chip of disqualified upon inspection,
It can very easily tear off by hand.It is compared with the prior art, the embodiment is easy to operate, easy to use.The embodiment in addition to
In the PI reinforcement of FPC, it may also be used for mount high temperature paster on electronic device.
In the embodiment, reinforcement material strip retractable unit 100 further includes the let off roll 120 being arranged on mounting rack 902, unreels
Driven roller 130, back note wind-up roll 140, waste material wind-up roll 150, winding driven roller 160 and several guide rollers 170；Let off roll
120, it unreels driven roller 130 and carries on the back the side that note wind-up roll 140 is located at reinforcement material strip punching unit 200,150 He of waste material wind-up roll
Winding driven roller 160 is located at the other side of reinforcement material strip punching unit 200, unreels driven roller 130, winding driven roller 160, back note
Wind-up roll 140 and waste material wind-up roll 150 are sequentially connected driving motor；It unreels driven roller 130 and winding driven roller 160 contradicts
Driven roller pressing mechanism 180 is connected, driven roller pressing mechanism 180 includes movably being fixedly mounted on adding on mounting rack 902
Pressure bracket 181, both ends are fixedly connected with the pressurization main shaft 182 of pressurizing frame 181, are rotationally mounted side by side on pressurization main shaft 182
On several pressure rollers 183；The gum scrape cut component by be arranged scrape grooving, it is consistent, solid with 183 outer diameter of pressure roller
Several scrape of the Dingan County on pressurization main shaft 182 cuts 184 composition of wheel.
The embodiment stores reinforcement material strip volume using let off roll 120, drives reinforcement material strip volume to put using driven roller 130 is unreeled
Reinforcement material strip out is recycled the back note paper tape of reinforcement material strip using back note wind-up roll 140, is recycled and be punched using waste material wind-up roll 150
The useless reinforcement material strip crossed drives 160 using unreel driven roller 130 and the winding that respectively drive the conflict of roller pressing mechanism 180, thus
The reinforcement material strip of tension band punching；Using it is several scrape cut wheel 184 composition gum scrape cut component replacement driven roller pressing mechanism 180
Pressure roller 183, so that the part gum for striking off reinforcement material strip corresponds to the preset redundancy section of reinforcing chip, hence for fitting
Afterwards, the reinforcing chip of disqualified upon inspection can very easily be torn off by hand.
It further include the removing component for separating the back note of reinforcement material strip in the embodiment, the removing component is fixed on
On mounting rack 902 and close to let off roll 120.Specifically the removing component includes being fixedly mounted on 902 upper surface light of mounting rack
Sliding removing stick.Using removing component, back note paper tape is stripped out during reinforcement web feed, reduces it to reinforcement material
The interference of band, and facilitate recycling.
It further include the strainer for being tensioned reinforcement material strip in the embodiment, the strainer is fixed on installation
On frame and close to waste material wind-up roll 150.Specifically the strainer includes the tensioning wheel being fixedly mounted on mounting rack 902.
Using strainer, useless reinforcement material strip is rolled tightly in useless reinforcement material strip removal process, so that the interference of useless reinforcement material strip is reduced,
And facilitate recycling
In the embodiment, it includes die cutting die 210 and the punching press for driving die cutting die 210 that reinforcement material strip, which is punched unit 200,
Component 220, punch assembly 220 include stamping cylinder, die cutting die 210 include E type mounting rack 212 and with 212 bullet of E type mounting rack
Property connection 1~2 punching pin 211；The top of punching pin 211 is with card cap 211a, through E type mounting rack top cross plate 222a
Cylindrical body, the lower part of punching pin 211 are to subscribe the cylinder of cross sectional shape and through transverse slat 222b, E type installation in the middle part of E type mounting rack
Frame bottom transverse slat 222c is equipped with the mutually matched through-hole in lower part with punching pin 211, and card cap 211a and E type mounting rack top are horizontal
The top surface of plate (222a) is fixedly connected by spring；The top surface of E type mounting rack bottom transverse slat 222c and two closest guiding
The top surface of roller 170 is contour.Preferably, the lower top of punching pin 211 has through-hole, and the through-hole passes through horizontal in the middle part of E type mounting rack
The horizontal direction through-hole of plate 222b is connected to vacuum pump.
The embodiment uses the punch assembly 220 including stamping cylinder to drive die cutting die 210, in die cutting die 210
Punching pin 211 runs through 212 3 transverse parts of E type mounting rack, horizontal version 212a elasticity at the top of the upper end card cap and E type mounting rack of punching pin 211
The through-hole of connection, 211 lower end of punching pin and E type mounting rack bottom transverse version 212c cooperate；To be moved downward when punching pin 211,
Become the individual benefit of reservation shape for reinforcement material strip punching on E type mounting rack bottom transverse version 212c, being tensioned is located at
Strong piece, individual reinforcing chip are lived by vacuum suction and continue the appointed position for being downwardly against the FPC having had been warmed up with punching pin
On, to complete the automatic attaching of reinforcing chip.
In the embodiment, FPC is bonded platform 300 equipped with the heating for fixing the adsorbing mechanism of FPC and for heating FPC
Mechanism.Absorption fixation is carried out to FPC using the adsorbing mechanism, FPC is preheated using the heating mechanism, thus when punching
When son is downwardly against on FPC, so that the automatic attaching of reinforcing chip is on subscribing position.
In the embodiment, vision positioning unit 400 is the CCD camera being electrically connected with control host, the control host
Including the visual signal processing unit for handling the CCD camera signal and the movement control for controlling FPC fitting platform 300
Unit, heat control unit and adsorption control units processed.The specific control host is PC, PLA, single-chip microcontroller or their group
It closes.Using the position signal of CCD camera acquisition FPC fitting platform 300, so that control host control FPC be facilitated to be accurately positioned, make
The automatic attaching of reinforcing chip is obtained on subscribing position.
In conjunction with attached drawing, the embodiments of the present invention are described in detail above, but the present invention is not limited to described implementations
Mode.For a person skilled in the art, in the case where not departing from the principle of the invention and spirit, to these embodiments
A variety of change, modification, replacement and modification are carried out, are still fallen in protection scope of the present invention.
Claims (8)
1. a kind of FPC reinforcing chip automatic joint device, including being received for conveying reinforcement material strip and recycling the reinforcement material strip of scrap belt
It puts unit (100), reinforcement material strip punching unit (200) above the landline of the reinforcement material strip, be located at the benefit
The landline and the FPC below reinforcement material strip punching unit (200) of strong material strip are bonded platform (300), and are used for institute
State the vision positioning unit (400) of FPC fitting platform (300) location control；FPC fitting platform (300) is horizontally disposed
Two-dimensional movement platform and be mounted on pedestal (901), on the pedestal (901) be fixedly installed mounting rack (902), the benefit
The fixation of strong material strip retractable unit (100), reinforcement material strip punching unit (200) and the vision positioning unit (400) is set
It sets on the mounting rack (902), it is characterized in that：The reinforcement material strip retractable unit (100) includes for striking off reinforcement material strip
The gum of part gum, which is scraped, cuts component.
2. FPC reinforcing chip automatic joint device according to claim 1, it is characterized in that：The reinforcement material strip retractable unit
(100) further include the let off roll (120) being arranged on the mounting rack (902), unreel driven roller (130), back note wind-up roll
(140), waste material wind-up roll (150), winding driven roller (160) and several guide rollers (170)；The let off roll (120), institute
It states and unreels driven roller (130) and the side carried on the back note wind-up roll (140) and be located at reinforcement material strip punching unit (200), institute
It states waste material wind-up roll (150) and winding driven roller (160) is located at the other side of reinforcement material strip punching unit (200),
It is described to unreel driven roller (130), the winding driven roller (160), the back note wind-up roll (140) and the waste material wind-up roll
(150) be sequentially connected driving motor；
It is described unreel driven roller (130) and the winding driven roller (160) contradict connection driven roller pressing mechanism (180), institute
State driven roller pressing mechanism (180) include movably be fixedly mounted on the mounting rack (902) pressurizing frame (181),
Both ends are fixedly connected with the pressurization main shaft (182) of the pressurizing frame (181), are rotationally mounted side by side on the pressurization main shaft
(182) several pressure rollers (183) on；The gum scrape cut component by be arranged scrape grooving, with the pressure roller (183)
Several scrape that outer diameter is consistent, is fixedly mounted on pressurization main shaft (182) cuts wheel (184) composition.
3. FPC reinforcing chip automatic joint device according to claim 2, it is characterized in that：It further include for separating reinforcement material
The removing component of the back note of band, the removing component are fixed on the mounting rack (902) and close to the let off roll (120).
4. FPC reinforcing chip automatic joint device according to claim 2, it is characterized in that：It further include for making reinforcement material strip
The strainer of tensioning, the strainer are fixed on mounting rack and close to the waste material wind-up rolls (150).
5. FPC reinforcing chip automatic joint device according to claim 1, it is characterized in that：Reinforcement material strip is punched unit (200)
Punch assembly (220) including die cutting die (210) and the driving die cutting die (210), the die cutting die (210) include
E type mounting rack (212) and 1~2 punching pin (211) with E type mounting rack (212) elastic connection；The punching pin (211)
Top is the cylindrical body through the E type mounting rack top cross plate (222a) with card cap (211a), under the punching pin (211)
Portion is the cylinder for subscribing cross sectional shape and the transverse slat (222b) in the middle part of the E type mounting rack, the E type mounting rack bottom transverse
Plate (222c) is equipped with the mutually matched through-hole in lower part with the punching pin (211), the card cap (211a) and the E type mounting rack
The top surface of top cross plate (222a) is fixedly connected by spring, the top surface of the E type mounting rack bottom transverse slat (222c) with two
The top surface of the closest guide roller (170) is contour.
6. FPC reinforcing chip automatic joint device according to claim 5, it is characterized in that：The lower bottom of the punching pin (211)
Face has through-hole, and the through-hole is connected to vacuum pump by the horizontal direction through-hole of transverse slat (222b) in the middle part of the E type mounting rack.
7. FPC reinforcing chip automatic joint device according to claim 1, it is characterized in that：The FPC is bonded platform (300)
Equipped with the adsorbing mechanism for fixing FPC and the heating mechanism for heating FPC.
8. FPC reinforcing chip automatic joint device according to claim 1, it is characterized in that：The vision positioning unit (400)
It is the CCD camera being electrically connected with control host, the control host includes believing for handling the vision of the CCD camera signal
Number processing unit and motion control unit, heat control unit and absorption and control for controlling FPC fitting platform (300)
Unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810673406.4A CN108901120A (en) | 2018-06-25 | 2018-06-25 | A kind of FPC reinforcing chip automatic joint device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810673406.4A CN108901120A (en) | 2018-06-25 | 2018-06-25 | A kind of FPC reinforcing chip automatic joint device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108901120A true CN108901120A (en) | 2018-11-27 |
Family
ID=64346336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810673406.4A Pending CN108901120A (en) | 2018-06-25 | 2018-06-25 | A kind of FPC reinforcing chip automatic joint device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108901120A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112804824A (en) * | 2020-12-31 | 2021-05-14 | 深圳市鑫美威自动化设备有限公司 | FPC soft board fast punching machine |
| CN112888170A (en) * | 2020-12-30 | 2021-06-01 | 厦门柔性电子研究院有限公司 | PI (polyimide) reinforcement processing method, manufacturing method of flexible circuit board with PI reinforcement and flexible circuit board |
| CN113275197A (en) * | 2021-05-24 | 2021-08-20 | 深圳市永丽威胶粘科技有限公司 | High temperature resistant shading sticky tape production facility |
| CN113844050A (en) * | 2021-09-15 | 2021-12-28 | 深圳市腾鑫精密电子芯材科技有限公司 | Gum application process of three-dimensional steel reinforced product of 5G chip circuit board |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112888170A (en) * | 2020-12-30 | 2021-06-01 | 厦门柔性电子研究院有限公司 | PI (polyimide) reinforcement processing method, manufacturing method of flexible circuit board with PI reinforcement and flexible circuit board |
| CN112804824A (en) * | 2020-12-31 | 2021-05-14 | 深圳市鑫美威自动化设备有限公司 | FPC soft board fast punching machine |
| CN112804824B (en) * | 2020-12-31 | 2022-07-05 | 深圳市鑫美威自动化设备有限公司 | FPC soft board fast punching machine |
| CN113275197A (en) * | 2021-05-24 | 2021-08-20 | 深圳市永丽威胶粘科技有限公司 | High temperature resistant shading sticky tape production facility |
| CN113275197B (en) * | 2021-05-24 | 2022-10-11 | 深圳市永丽威胶粘科技有限公司 | High temperature resistant shading sticky tape production facility |
| CN113844050A (en) * | 2021-09-15 | 2021-12-28 | 深圳市腾鑫精密电子芯材科技有限公司 | Gum application process of three-dimensional steel reinforced product of 5G chip circuit board |
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Application publication date: 20181127 |
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