CN110370692B

CN110370692B - Polaroid drilling-free production process

Info

Publication number: CN110370692B
Application number: CN201910747272.0A
Authority: CN
Inventors: 雷超; 凌霄城; 颜跃; 牛学东
Original assignee: Huizhou Fuli Electronic Co ltd
Current assignee: Huizhou Fuli Electronic Co ltd
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-12-01
Anticipated expiration: 2039-08-14
Also published as: CN110370692A

Abstract

The invention discloses a drilling-free production process of a polaroid, which comprises the following steps of cleaning a master plate; die cutting is carried out on the cleaned master plate; forming a plurality of polaroids on the die-cut mother plate, wherein holes are formed in the same position of each polaroid; a plurality of polaroids are overlapped to form a laminated sheet group; holes of a plurality of polaroids in the lamination group are opposite to each other one by one, so that a channel is formed in the lamination group; and edging the laminated group. According to the invention, when the polaroid is die-cut, the holes of the polaroid are die-cut, so that the procedures of drilling, hole grinding, hole cleaning and the like for the laminated sheet group are reduced, the production time of the polaroid applied to the full-face screen of the mobile phone is further reduced, and the production efficiency of the polaroid is improved.

Description

Polaroid drilling-free production process

Technical Field

The invention relates to the technical field of polaroids, in particular to a drilling-free production process of a polaroid.

Background

The polaroid is one of three key components of a Liquid Crystal Display (LCD), is a composite material prepared by compounding a stretched polyvinyl alcohol film (PVA) and a cellulose triacetate film (TAC), and can realize the characteristics of high brightness and high contrast of liquid crystal display. The polaroid applied to the mobile phone display is small in area and is formed by cutting a mother plate, and in order to adapt to a full-screen mobile phone, a round hole required by a front-arranged camera needs to be reserved in the polaroid. For the production of the above polarizer, in the prior art, the production process of the polarizer generally comprises the steps of firstly die-cutting the polarizer corresponding to the size of the mobile phone screen, then transferring a plurality of overlapped polarizers to a CNC grinder, drilling the overlapped polarizers by the CNC grinder, then grinding the drilling position by the CNC, grinding the periphery and the R angle of the polarizer, and then discharging. In above-mentioned process, the CNC grinds the machine and need drill earlier, in order to guarantee the drilling quality and avoid the fracture of drilling tool bit moreover, need carry out a lot of drilling, then change after grinding the tool bit, just can continue to grind, still need clean the hole after grinding in addition, the process is loaded down with trivial details, and the consumption time is long, and the production efficiency that leads to foraminiferous polaroid is lower.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a drilling-free production process for a polarizer.

The invention discloses a drilling-free production process of a polarizer, which comprises the following steps:

cleaning the master plate;

die cutting is carried out on the cleaned master plate; forming a plurality of polaroids on the die-cut mother plate, wherein holes are formed in the same position of each polaroid;

a plurality of polaroids are overlapped to form a laminated sheet group; holes of a plurality of polaroids in the lamination group are opposite to each other one by one, so that a channel is formed in the lamination group;

and edging the laminated group.

According to one embodiment of the invention, the channels in the stack are blown while the stack is being edged.

According to an embodiment of the invention, the channels in the lamination stack are blown from below the lamination stack towards above the lamination stack.

According to an embodiment of the present invention, after performing the edge grinding process on the laminated sheet set, the method further includes:

and detecting the edge-polished polaroid.

According to an embodiment of the present invention, in the step of cleaning the master, the master is cleaned by adhering the surface of the master.

According to one embodiment of the invention, in the step of die cutting the cleaned master plate, a cutting die adopted by the die cutting comprises a substrate, a plurality of rectangular cutting edge grooves and a plurality of hole-shaped cutting edge grooves; the plurality of rectangular blade grooves and the plurality of hole-shaped blade grooves are formed in the front face of the base plate, and the plurality of hole-shaped blade grooves are arranged in the plurality of rectangular blade grooves in a one-to-one correspondence mode respectively.

According to an embodiment of the present invention, the hole-shaped blade groove is close to one corner of the rectangular blade groove.

According to an embodiment of the present invention, the cutting die further comprises a plurality of magnets; the plurality of magnetic attraction devices are arranged on the back surface of the substrate.

According to an embodiment of the present invention, a plurality of rectangular blade grooves are arranged in a longitudinal and transverse direction on the front surface of the substrate; the plurality of rectangular blade grooves which are longitudinally arranged are arranged at intervals, and two adjacent rectangular blade grooves in the plurality of rectangular blade grooves which are transversely arranged are spliced.

According to one embodiment of the invention, an arc-shaped transition structure is arranged at the splicing position where two adjacent rectangular blade grooves are spliced.

This application is when the cross cutting polaroid, and the hole of while mould cutting polaroid has reduced the drilling to the lamination group, hole grinding and processes such as hole cleanness, and then has reduced the polaroid production time who uses at the full screen of cell-phone, has promoted the production efficiency of polaroid.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a flow chart of a polarizer drilling-free production process;

FIG. 2 is a schematic front view of the cutting die in the present embodiment;

FIG. 3 is a schematic view of the back structure of the cutting die in the present embodiment;

fig. 4 is an enlarged view of a portion a of fig. 2 in this embodiment.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

It should be noted that all the directional indications in the embodiments of the present invention, such as up, down, left, right, front, and back, are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are used for descriptive purposes only, not specifically for describing order or sequence, but also for limiting the present invention, and are only used for distinguishing components or operations described in the same technical terms, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", may explicitly or implicitly include at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:

referring to fig. 1, fig. 1 is a flow chart of a polarizer drilling-free production process. The drilling-free production process of the polaroid in the embodiment comprises the following steps:

and S1, cleaning the master plate.

S2, die cutting is carried out on the cleaned master plate; the mother set after the cross cutting forms a plurality of polaroids, and some holes are all seted up to the same position of each polaroid.

S3, overlapping a plurality of polaroids to form a lamination stack; the holes of the polaroids in the lamination stack are opposite to each other, so that a channel is formed in the lamination stack.

And S4, edging the laminated group.

When the polaroid is die-cut, the holes of the polaroid are die-cut simultaneously, so that the processes of drilling, hole grinding, hole cleaning and the like for the lamination group are reduced, the production time of the polaroid applied to the full-face screen of the mobile phone is further reduced, and the production efficiency of the polaroid is improved.

Referring to fig. 1 again, further, after performing the edge grinding process on the laminated sheet set, the method further includes the following steps:

and S5, detecting the edge-polished polaroid.

Referring back to fig. 1, further, in step S1, the master is cleaned, specifically, the master is cleaned by adhering the surface of the master. When specifically using, can adopt cleaning device to clean the master mask, cleaning device has the conveyer belt and sets up two cleaning rollers at the conveyer belt end, and two cleaning rollers set up side by side from top to bottom, and the surface of each cleaning roller all has the viscose layer, has the clearance between two cleaning rollers, and this clearance can supply the master mask to pass through. The mother plate passes through the gap between the two cleaning rollers and moves under the action of the rotating force of the cleaning rollers and the conveying force of the conveying belt, and the adhesive layers on the surfaces of the two cleaning rollers simultaneously clean the two sides of the mother plate. Preferably, the width of the gap between the two cleaning rollers corresponds to the thickness of the master.

In step B2, die cutting is performed on the cleaned master, specifically, a die cutting machine is used to drive a cutting die to perform die cutting on the cleaned master, so that a plurality of polarizers are formed on the die-cut master. Through the structural design of cutting die for some holes have all been seted up to the same position of each polaroid after the cross cutting, and the size in hole is unanimous, and is preferred, and the hole is the round hole, and this round hole can be one or two in order to adapt to the position of the leading camera of full screen cell-phone, and its quantity can be decided according to the leading camera of full screen cell-phone. So, through in cross cutting polaroid, together cross cutting goes out the round hole of being applied to full screen cell-phone, can remove subsequent drilling, hole grinding and the clear process in hole from, remove simultaneously grinding the time that the drilling sword of CNC grinding machine was changed for grinding the sword in the process from, reduced the production time of polaroid, and then promoted the production efficiency of polaroid.

In step S3, a plurality of polarizers are stacked together to form a stack corresponding to the position of the circular hole of each polarizer, and generally, 50 polarizers are stacked to form a stack. The circular holes of each polaroid in the lamination group are uniformly and oppositely aligned, and the superposition of 50 polaroid holes can form a channel with a circular cross section. Preferably, the upper surface and the lower surface of the lamination stack are respectively attached with a protective film, specifically, the size and the formation of the protective film are consistent with those of the polaroid, and the same round hole is also formed in the round hole corresponding to the polaroid, so that the channel is prevented from being sealed. And the laminated stack subjected to subsequent grinding is protected by the protective film. When specifically using, the lamination can be carried out to the manual cooperation lamination tool of accessible, for example, the tool adopts the cooperation of right angle structure and pole location structure, and wherein the right angle of right angle structure corresponding polaroid, the hole on the pole location structure corresponding polaroid.

In step S4, the lamination set is edged by placing the lamination set on a jig of a CNC grinding machine, and the CNC grinding machine grinds the periphery of the lamination set. Preferably, the channels in the lamination group are blown while the lamination group is edge-polished, and specifically, the channels in the lamination group can be blown from the lower part of the lamination group to the upper part of the lamination group. It can be understood that the CNC grinder may generate waste chips when grinding the periphery of the lamination set, and may also increase the temperature of the lamination set, which may affect the quality of the polarizer. The air blowing device has the advantages that the air blowing device blows air into the channel in the lamination group from the lower part of the lamination group to the upper part of the lamination group, so that heat generated by grinding can be taken away, and meanwhile, waste chips can be prevented from entering the channel due to formed ascending air flow. The quality of the polarizer can be improved. When specifically using, only need to improve current CNC grind the tool of machine can, for example, correspond the hole position in polaroid in the below of tool, set up a through-hole to communicate with external air blower, can realize quick the transformation on the basis that does not change current CNC and grind the machine.

In step S5, the appearance of the polarizer is specifically inspected to see whether there is a scratch or a defective product resulting from scratching, and the good polarizer is screened out and discharged. In a specific application, a CCD appearance detection device or an artificial eye detection may be adopted, which is not limited herein.

With reference to fig. 2, fig. 2 is a schematic front structure diagram of the cutting die in this embodiment. In order to die-cut the circular holes while die-cutting the polarizer, the structure of the die-cut cutting die is very important, and the cutting die for die-cutting will now be further described.

The cutting die comprises a substrate 1, a plurality of rectangular cutting edge grooves 2 and a plurality of hole-shaped cutting edge grooves 3; the plurality of rectangular blade grooves 2 and the plurality of hole-shaped blade grooves 3 are all arranged on the front surface of the substrate 1, and the plurality of hole-shaped blade grooves 3 are respectively arranged in the plurality of rectangular blade grooves 2 in a one-to-one correspondence manner.

Preferably, the hole-shaped edge groove 3 is close to one corner of the rectangular edge groove 2. The position of the hole-shaped blade groove 3 in the rectangular blade groove 2 is determined according to the position of a front camera designed for the full-screen mobile phone, so that the position of a circular hole for cutting the polaroid can correspond to the position of the front camera of the full-screen mobile phone.

With reference to fig. 3, fig. 3 is a schematic back structure diagram of the cutting die in this embodiment. Further, the cutting die in this embodiment further includes a plurality of magnetic attraction pieces 4. The plurality of magnets 4 are provided on the back surface of the substrate 1.

It can be understood that, for once only cutting more polaroids, can set up more rectangle sword groove 2 and hole shape sword groove 3 on the base plate 1, and can concentrate on the middle part of base plate 1, and the cutting die is when using, the side of base plate 1 is held to the manipulator centre gripping through cross cutting machine, the polaroid that treats cutting downwards in more rectangle sword groove 2 and hole shape sword groove 3 orientation, concentrate on the middle part of base plate 1 again, under the effect of gravity, can lead to the middle part of base plate 1 to bear weight great, make slight undercut appear in base plate 1, influence the cutting quality of cutting die. Through a plurality of magnetism 4 settings of inhaling at the back of base plate 1, carry out supplementary absorption to base plate 1, avoided above-mentioned base plate 1's sunken problem, guarantee the quality that cuts of cutting die. When concrete application, magnetism is inhaled 4 and is adopted magnet, and it adsorbs on the manipulator of cross cutting machine through magnetic attraction, and this kind of adsorption state is also comparatively convenient when dismantling to the use of cutting die.

In this embodiment, the plurality of magnets 4 may be arranged in a matrix, or may be arranged in a regular shape, such as a quadrangle, a pentagon, or a hexagon. Preferably, a plurality of magnets 4 are close to the middle portion of the substrate 1, wherein one magnet 4 can be disposed at the center of the substrate 1. Preferably, the magnetic piece 4 is plate-shaped and is embedded in the back surface of the substrate 1, and the surface of the magnetic piece 4 is flush with the back surface of the substrate 1.

Referring to fig. 2 and 3 again, a holding position 11 is formed on a side of the substrate 1. The handheld position 11 is in a strip hole shape, is adaptive to the size of a palm of a human body, and is convenient for taking the cutting die. Preferably, the number of the handgrips 11 is plural, and the plurality of the handgrips 11 are respectively disposed on two opposite sides of the substrate 11. The number of the holding positions 11 in this embodiment is four, and the four holding positions 11 are respectively arranged on the side of the substrate 1 two by two.

Referring back to fig. 2, further, the front surface of the substrate 1 is provided with a nameplate region 12. The nameplate region 12 is located at a side of the substrate 1. The nameplate area 12 records the basic information of the cutting die, and the management of the cutting die is convenient. In a specific arrangement, the nameplate region 12 is located between the oppositely arranged hand-held positions 11. Preferably, the front face of the base plate 11 is also provided with an indicating arrow 13 to facilitate the direction of the arrow for storage and for assembly to a die cutting machine manipulator, the indicating arrow 13 being opposite the nameplate region 12 when specifically positioned.

With continued reference to fig. 2 and 4, fig. 4 is an enlarged view of portion a of fig. 2 in this embodiment. Furthermore, a plurality of rectangular blade grooves 2 are arranged vertically and horizontally on the front surface of the substrate 1; the plurality of rectangular blade grooves 2 which are longitudinally arranged are arranged at intervals, and two adjacent rectangular blade grooves 2 in the plurality of rectangular blade grooves 2 which are transversely arranged are spliced. Preferably, the arc-shaped transition structure 5 is arranged at the splicing position where two adjacent rectangular blade grooves 2 are spliced.

It can be understood that, the comprehensive screen cell-phone has R angle structure, rectangle sword groove 2 also need set up R angle structure in order to adapt to the structure of the comprehensive screen cell-phone, splice department between two rectangle sword grooves 2 of so mutual concatenation will form an acute angle, and when the cutting die cuts the polaroid, the stress concentration of acute angle splice department, may lead to cutting the crackle, and splice department through two rectangle sword grooves 2 sets up arc transition structure 5, can reduce the cutting stress of splice department, avoid the appearance of crackle, at follow-up grinding process, grind the unnecessary part that falls arc transition structure 5, in order to obtain the certified products. The arc transition structure 5 in this embodiment may adopt an arc angle with a radius of 0.5 mm.

Referring again to fig. 4, further, the rectangular blade groove 2 is provided with an extension 21. The extension 21 is an arc extension, and is a micro arc structure which is protruded outwards from the inside of the rectangular blade groove 2, so that the stress is further reduced during cutting, and the cutting quality of the polaroid is further ensured. During subsequent grinding, the epitaxy 21 is ground away. The extension 21 in this example is 0.3 mm.

The cutting die in this embodiment further includes a gas-permeable groove (not shown) to facilitate gas discharge during cutting. The base plate 1 in this example was made of a finnish wood board. The rectangular blade groove 2 and the hole-shaped blade groove 3 are made of a Nippon Zhongshan mirror surface cutter.

To sum up: the polaroid drilling-free production process in the embodiment has the advantages that when the polaroid is die-cut, holes of the polaroid are die-cut simultaneously, so that the processes of drilling, hole grinding, hole cleaning and the like of the lamination group are reduced, the production time of the polaroid applied to the full-face screen of the mobile phone is further reduced, in the specific implementation, compared with the processes in the prior art, the production process of each lamination group is shortened by 30 seconds, and the production efficiency of the polaroid is improved by about 30%.

The above is merely an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A polarizer drilling-free production process is characterized by comprising the following steps:

cleaning the master plate;

die cutting is carried out on the cleaned master plate; forming a plurality of polaroids on the die-cut master plate, wherein holes are formed in the same position of each polaroid;

a plurality of polaroids are overlapped to form a laminated sheet group; holes of the polaroids in the laminated stack are opposite to one another, so that channels are formed in the laminated stack;

performing edge grinding treatment on the lamination group; and blowing the channel in the lamination stack while edging the lamination stack, and blowing the channel in the lamination stack from the lower part of the lamination stack to the upper part of the lamination stack.

2. The polarizer drilling-free production process according to claim 1, further comprising, after edging the lamination stack:

and detecting the edge-polished polaroid.

3. The polarizer drilling-free production process of claim 1, wherein in the step of cleaning the master, the master is cleaned by adhering a surface of the master.

4. A polarizer drilling-free production process according to any of claims 1 to 3, wherein in the step of die cutting the cleaned master, the die cutting employs a cutting die comprising a substrate (1), a plurality of rectangular cutting edge grooves (2) and a plurality of hole-shaped cutting edge grooves (3); the plurality of rectangular blade grooves (2) and the plurality of hole-shaped blade grooves (3) are formed in the front face of the substrate (1), and the hole-shaped blade grooves (3) are respectively arranged in the plurality of rectangular blade grooves (2) in a one-to-one correspondence mode.

5. A polarizer drill-free production process according to claim 4, wherein the hole-shaped edge groove (3) is close to one corner of the rectangular edge groove (2).

6. A polarizer drilling-free production process according to claim 4, wherein the cutting die further comprises a plurality of magnetic attraction pieces (4); the magnetic pieces (4) are arranged on the back surface of the substrate (1).

7. A polarizer drilling-free production process according to claim 4, wherein a plurality of the rectangular blade grooves (2) are arranged in a longitudinal and transverse direction on the front surface of the substrate (1); the rectangular blade grooves (2) are arranged at intervals in the longitudinal direction, and two adjacent rectangular blade grooves (2) in the rectangular blade grooves (2) are spliced in the transverse direction.

8. A polarizer drilling-free production process according to claim 7, wherein an arc-shaped transition structure (5) is arranged at the splicing position where two adjacent rectangular blade grooves (2) are spliced.