CN212344156U - Cover membrane laminating structure of FPC pad - Google Patents

Abstract

The utility model discloses a cover film laminating structure of FPC (flexible printed circuit) pad, which comprises a double-station pressurizing machine, an upper jig mould fixed on an upper plate of the pressurizing machine, a lower jig mould fixed on a lower plate of the pressurizing machine, a steel plate arranged on the upper jig mould, and a magnetic carrier arranged on the lower jig mould; the lower jig die is provided with a positioning pin; the steel plate is provided with a through hole corresponding to the window position of the FPC bonding pad and a first positioning hole opposite to the positioning pin; the magnetic carrier is provided with a second positioning hole opposite to the positioning pin, and a magnet is arranged in the middle of the magnetic carrier. The utility model discloses a mode that corresponds the window position of FPC pad and open the through-hole on the steel sheet, the during operation adopts steel sheet and magnetic carrier magnetism to inhale to cover the FPC pad with the compaction and cover the membrane, can realize the flow innovation of covering the membrane laminating of FPC pad, realizes the technological process that laser was windowed again behind the full version subsides covering membrane, can overcome the die-cut unable processing restriction that realizes the small-size high density windowing of mould, improves the whole precision of FPC pad.

Description

Cover membrane laminating structure of FPC pad

Technical Field

The utility model relates to a FPC processing technology field especially indicates a cover membrane laminated structure of FPC pad.

Background

The bonding pad is the most important part of the FPC for realizing electrical and functional interconnection, and the manufacturing process of the traditional FPC bonding pad comprises the following basic processes: punching an opening of a covering film → aligning and attaching with a base material → pressing at high temperature → post-curing.

The traditional process has the problems that: 1. limited by the specification of the bonding pad, a window windowing die which is too small and too dense cannot be processed; 2. the tolerance is more than 0.1mm and can be realized by the precision of the bonding pad. In recent years, with the requirements of high density and high precision of electronic products, the development trend of the FPC pad is high density, high precision and small size, and a part of the precision FPC pad cannot be realized by adopting the traditional process, so that a technical bottleneck exists.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a FPC pad cover membrane laminated structure can use the processing at the FPC pad that high density, high accuracy required, improves the product precision.

In order to achieve the above purpose, the solution of the present invention is:

a covering film attaching structure of an FPC (flexible printed circuit) bonding pad comprises a double-station pressurizer, a jig upper die, a jig lower die, a steel plate and a magnetic carrier, wherein the double-station pressurizer is provided with a pressurizer upper plate and a pressurizer lower plate; the lower jig die is provided with a positioning pin; a through hole is formed in the position, corresponding to the window of the FPC bonding pad, of the steel plate, and a first positioning hole opposite to the positioning pin is formed in the steel plate; the magnetic carrier is provided with a second positioning hole opposite to the positioning pin, and the middle part of the magnetic carrier is provided with a magnet; when the device works, the FPC bonding pad and the covering film are sequentially placed on the magnetic carrier, the steel plate is driven to be pressed downwards by the upper plate of the pressurizing machine, the steel plate is attracted by the magnet to ensure that the covering film is pressed on the FPC bonding pad by the steel plate, and the positioning pin and the first positioning hole play a role in guiding.

The double-station pressurizer comprises an upper pressurizer plate, a lower pressurizer plate, a sliding rail and a base, wherein the sliding rail is installed on the base, and the lower pressurizer plate is in sliding fit with the sliding rail.

The single side size of the through hole is 0.2mm larger than the window size of the FPC bonding pad.

And both ends of the magnetic carrier are provided with sinking grooves.

The magnetic carrier is provided with a direction mark for indicating the installation direction.

After the technical scheme is adopted, the utility model discloses a mode that corresponds the window position trompil hole of FPC pad on the steel sheet, the during operation adopts steel sheet and magnetic carrier magnetism to inhale and covers FPC pad and cover membrane with the compaction, can realize the flow innovation of the cover membrane laminating of FPC pad, realize the technological process of laser windowing again after full page subsides cover membrane, can overcome the die-cut processing restriction that can't realize small-size high density windowing, cover membrane and FPC pad's alignment tolerance has basically been got rid of, make the whole precision of FPC pad obtain improving; in the later process, the cover film at the position of the through hole is cut by laser windowing, and the cover film at the position of the through hole is not combined with the FPC bonding pad, so that waste discharge is easier.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a steel plate according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a magnetic carrier according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of the operation of an embodiment of the present invention;

the reference numbers illustrate: a double-station pressurizer 1; a presser upper plate 11; a presser lower plate 12; a slide rail 13; a base 14; an upper jig die 2; a jig lower die 3; positioning pins 31; a steel plate 4; a through hole 41; the first positioning hole 42; a magnetic carrier 5; the second positioning hole 51; a magnet 52; a sink tank 53; a direction indicator 54; an FPC pad 6; covering the membrane 7.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

The utility model relates to a cover membrane laminated structure of FPC pad, including having the duplex position of pressurizer upper plate 11 and pressurizer hypoplastron 12 pressurizer 1, fixing on the tool of pressurizer upper plate 11 mould 2, fixing at the tool lower mould 3 of pressurizer hypoplastron 12, install the steel sheet 4 of mould 2 on the tool, install the magnetic carrier 5 at tool lower mould 3.

The lower jig die 3 is provided with a positioning pin 31; the steel plate 4 is provided with a through hole 41 corresponding to the window position of the FPC bonding pad and a first positioning hole 42 opposite to the positioning pin 31; the magnetic carrier 5 is provided with a second positioning hole 51 disposed opposite to the positioning pin 31, and a magnet 52 is disposed at the middle thereof.

During operation, the FPC pad and the cover film are sequentially placed on the magnetic carrier 5, the upper plate 11 of the pressurizing machine drives the steel plate 4 to be pressed downwards, the magnet 52 attracts the steel plate 4 to ensure that the cover film is pressed on the FPC pad by the steel plate 4, and the positioning pin 31 and the first positioning hole 42 play a role in guiding.

Referring to fig. 1-3, a specific embodiment of the present invention is shown.

The double-station pressurizer 1 comprises an upper pressurizer plate 11, a lower pressurizer plate 12, a sliding rail 13 and a base 14, wherein the sliding rail 13 is installed on the base 14, and the lower pressurizer plate 12 is in sliding fit with the sliding rail 13.

The single side size of the through hole 41 is 0.2mm larger than the window size of the FPC pad, so that enough cutting space is reserved.

Both ends of the magnetic carrier 5 are provided with the sink 53, the sink 53 is used for facilitating manual separation between the steel plate 4 and the magnetic carrier 5 when the jig is installed, and the sink 53 is not used after the jig is installed.

The magnetic carrier 5 is further provided with a direction mark 54, the direction mark 54 is located on the side of the sinking groove 53, the direction mark 54 is a direction fool-proof mark of the magnetic carrier 5 and the lower jig die 3, and the direction mark is used for preventing the magnetic carrier 5 from rotating 180 degrees and being placed into the lower jig die 5 to cause the scrapping of the jig.

Referring to fig. 4, the working principle of the present invention is: during operation, the upper jig die 2 and the lower jig die 3 are respectively fixed on an upper pressurizing machine plate 11 and a lower pressurizing machine plate 12, the lower pressurizing machine plate 12 can move left and right, the FPC pad 6 and the cover film 7 are fixed on the magnetic carrier 5 through the positioning pin 31 and move right to the pressing station, the upper pressurizing machine plate 11 presses down, a product is synchronously aligned to the steel plate 4, the positioning pin 31 is aligned to be inserted into the first positioning hole 42 to realize pressing guide, the steel plate 4 is attached to the upper surface of the cover film 7, the magnet 52 absorbs the steel plate 4 to ensure the pressing pressure, the cover film 7 is tightly attached to the FPC pad 6 due to the position of the steel plate 4 without the through hole 41, the cover film 7 is not combined with the FPC pad 6 due to the corresponding hole opening position, then the cover film 7 can be cut through the through hole 41 by laser.

Through the scheme, the utility model discloses a mode that corresponds FPC pad 6's window position tapping hole 41 on steel sheet 4, the during operation adopts steel sheet 4 and 5 magnetism of magnetic carrier to inhale with the compaction cover FPC pad 6 and cover membrane 7, can realize the flow innovation that FPC pad 6's cover membrane 7 laminated, realize the technological process of laser windowing again behind full position subsides cover membrane 7, can overcome the die-cut processing restriction that can't realize the small-size high density windowing of size 0.3mm, clearance 0.8mm below, basically, the counterpoint tolerance of cover membrane 7 and FPC pad 6 has been removed, make the whole precision of FPC pad 6 improve to 0.05mm from average 0.13 mm; in the later process, the cover film 7 at the position of the through hole 41 is cut by laser windowing, and the cover film 7 at the position of the through hole 41 is not combined with the FPC pad 6, so that waste discharge is easier.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.

Claims (5)

1. The utility model provides a cover membrane laminated structure of FPC pad which characterized in that: the device comprises a double-station pressurizer with a pressurizer upper plate and a pressurizer lower plate, a jig upper die fixed on the pressurizer upper plate, a jig lower die fixed on the pressurizer lower plate, a steel plate installed on the jig upper die, and a magnetic carrier installed on the jig lower die;

the lower jig die is provided with a positioning pin; a through hole is formed in the position, corresponding to the window of the FPC bonding pad, of the steel plate, and a first positioning hole opposite to the positioning pin is formed in the steel plate; the magnetic carrier is provided with a second positioning hole opposite to the positioning pin, and the middle part of the magnetic carrier is provided with a magnet;

when the device works, the FPC bonding pad and the covering film are sequentially placed on the magnetic carrier, the steel plate is driven to be pressed downwards by the upper plate of the pressurizing machine, the steel plate is attracted by the magnet to ensure that the covering film is pressed on the FPC bonding pad by the steel plate, and the positioning pin and the first positioning hole play a role in guiding.

2. The cover film attachment structure for an FPC pad of claim 1, wherein:

the double-station pressurizer comprises an upper pressurizer plate, a lower pressurizer plate, a sliding rail and a base, wherein the sliding rail is installed on the base, and the lower pressurizer plate is in sliding fit with the sliding rail.

3. The cover film attachment structure for an FPC pad of claim 1, wherein:

the single side size of the through hole is 0.2mm larger than the window size of the FPC bonding pad.

4. The cover film attachment structure for an FPC pad of claim 1, wherein:

and both ends of the magnetic carrier are provided with sinking grooves.

5. The cover film attachment structure for an FPC pad of claim 1, wherein:

the magnetic carrier is provided with a direction mark for indicating the installation direction.

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