TWI869755B - Automatic film tearing device - Google Patents

Abstract

An automatic membrane tearing device includes a lifting unit, a surface modification unit, a conveying platform and a film tearing unit, by the design of the lifting unit with the surface modification unit, when the position of an optical substrate is changed, the surface properties of a first protective film and a second protective film of the optical substrate are changed through the modified medium produced by the surface modification unit, so that when the optical substrate is transported to the film tearing unit by the conveying platform, the adhesion between the film tearing unit and the first and second protective films can be increased to increase the yield of the first and second protective films torn from a substrate body.

Description

Automatic film tearing device

The present invention relates to a film-tearing device for optical substrates, and in particular to an automatic film-tearing device.

Generally, in order to improve the performance of an optical substrate or change the light wave transmission characteristics, it is usually necessary to deposit a thin film on the surface of the optical substrate. However, before the thin film is deposited on the surface of the optical substrate, in order to prevent the upper and lower surfaces of the optical substrate from being attached by dust or pollutants, a protective film is provided on the upper and lower surfaces of the optical substrate. When the thin film is deposited on the surface of the optical substrate, the protective film is torn off.

It is known that the film peeling method before the optical substrate is coated is completed manually. This film peeling method is not only time-consuming and labor-intensive, but also will contaminate the surface of the optical substrate during the film peeling process, thereby reducing the subsequent coating quality of the optical substrate. Therefore, the film peeling operation is currently performed in an automated manner. However, in the current film peeling process, when the optical substrate to be peeled off passes through a film peeling unit, the adhesive tape of the film peeling unit adheres to the surface of the protective film of the optical substrate, and the protective film is torn off from the substrate body by the adhesive force of the adhesive tape. However, the protective film on the optical substrate is mostly a plastic film (such as a polyester film), which is a non-polar polymer (non-polar polymer). polymer), so the surface tension of the protective film is relatively low, causing the adhesive tape of the mold tearing unit to be unable to adhere to the protective film and tear it off, highlighting the defect of low mold tearing yield.

The purpose of the present invention is to provide an automatic film tearing device, mainly to improve the film tearing yield.

To achieve the above-mentioned purpose, the present invention is an automatic film-tearing device, which is suitable for automatically tearing a film on an optical substrate. The optical substrate has a substrate body, a first protective film disposed on the upper surface of the substrate body, and a second protective film disposed on the lower surface of the substrate body. The automatic film-tearing device comprises:

A lifting unit having a lifting platform, the lifting platform is provided for the optical substrate to be set and can be lifted and lowered between a modification position and a conveying position; a surface modification unit is provided at one side of the lifting unit and corresponds to the modification position, when the lifting platform is at the modification position, the surface modification unit generates a modification medium for the optical substrate; a conveying platform is provided below the surface modification unit and corresponds to the conveying position, the conveying platform has a first conveying end adjacent to the lifting unit and a second conveying end opposite to the first conveying end, when the lifting platform is at the conveying position, the conveying platform conveys the optical substrate from the first conveying end to the second conveying end; and a film tearing unit, adjacent to the second conveying end of the conveying platform and for the optical substrate to pass through, for tearing the first protective film and the second protective film of the optical substrate off the substrate body.

The effect of the present invention is that: by designing the lifting unit in combination with the surface modification unit, when the optical substrate is in the modification position, the surface properties of the first protective film and the second protective film are changed through the modification medium generated by the surface modification unit, so that when the optical substrate is transported to the film tearing unit via the transport platform, the adhesion between the film tearing unit and the first protective film and the second protective film can be increased, thereby improving the yield of tearing the first protective film and the second protective film off the substrate body.

Preferably, the modified medium generated by the surface modification unit is plasma.

Preferably, the conveying platform is composed of a plurality of conveying rollers.

Preferably, the film tearing unit has a first roller set, a second roller set below the first roller set, a first tearing tape cyclically arranged around the first roller set and having a first adhesive portion, and a second tearing tape cyclically arranged around the second roller set and having a second adhesive portion. When the optical substrate passes between the first roller set and the second roller set, the first adhesive portion of the first tearing tape adheres to the first protective film of the optical substrate and tears the first protective film off the substrate body, and the second adhesive portion of the second tearing tape adheres to the second protective film of the optical substrate and tears the second protective film off the substrate body.

Preferably, it further comprises a relay platform adjacent to the film tearing unit, and the substrate body is placed on the relay platform.

Preferably, it also includes an air-floating platform adjacent to the relay platform, a transfer unit disposed above the relay platform and the air-floating platform, and a pushing unit disposed between the air-floating platform and the transfer unit. The air-floating platform is provided for the substrate body to be disposed thereon, and has a first air-floating end adjacent to the relay platform, and a second air-floating end opposite to the first air-floating end. The transfer unit is used to move the substrate body on the relay platform to the first air-floating end of the air-floating platform, and the pushing unit is used to push the substrate body on the first air-floating end toward the second air-floating end.

Preferably, the air-floating platform has an air-floating table surface, and the air-floating table surface has a plurality of air holes.

Preferably, the transfer unit includes a transfer rail disposed above the relay platform and the air-floating platform, and a clamping module disposed on the transfer rail, wherein the clamping module has a clamping body that can be reciprocated and disposed on the transfer rail, and a clamping arm that can be displaced up and down and disposed on the clamping body and is used to clamp or release the substrate body.

Preferably, the pushing unit includes a pushing guide rail disposed above the air-floating platform, and a pushing member disposed on the pushing guide rail capable of reciprocating movement, wherein the pushing member has a pushing portion for pushing against the substrate body.

Preferably, it further comprises a substrate box adjacent to the second air-floating end of the air-floating platform, for receiving the substrate body pushed toward the second air-floating end by the pushing unit.

1A to 2B, an automatic film-tearing device provided by an embodiment of the present invention is suitable for automatically tearing a film from an optical substrate 10. The optical substrate 10 has a substrate body 11, a first protective film 12 disposed on the upper surface of the substrate body 10, and a second protective film 13 disposed on the lower surface of the substrate body 10. The automatic film-tearing device mainly comprises a lifting unit 20, a surface modification unit 30, a conveying platform 40, a film-tearing unit 50, a relay platform 60, an air-floating platform 70, a transfer unit 80, a pushing unit 90, and a substrate box A, wherein:

The lifting unit 20 has a lifting base 21 and a lifting platform 22 that can be lifted and lowered on the lifting base 21. The lifting platform 22 is used to place the optical substrate 10 and can be lifted and lowered between a modification position (as shown in FIG. 1A) and a conveying position (as shown in FIG. 1B).

The surface modification unit 30 is disposed on one side of the lifting unit 20 and corresponds to the modification position. When the lifting platform 22 is at the modification position, the surface modification unit 30 generates a modification medium 31 for the optical substrate 10, and the modification medium 31 acts on the first protective film 12 and the second protective film 13 of the substrate body 10 to change the surface properties of the first protective film 12 and the second protective film 13, so that the surfaces of the first protective film 12 and the second protective film 13 have higher adhesion. In this embodiment, the surface modification unit 30 is a coma machine, so that the modification medium 31 generated by the surface modification unit 30 is plasma, and the surface modification operation of the first protective film 12 and the second protective film 13 of the substrate body 10 is performed by coma treatment. The surface modification unit 30 is not limited to a coma machine.

The conveying platform 40 is disposed below the surface modification unit 30 and corresponds to the transport position. The conveying platform 40 has a first conveying end 41 adjacent to the lifting unit 20 and a second conveying end 42 opposite to the first conveying end 41. When the lifting platform 22 is at the transport position, the conveying platform 40 transports the modified optical substrate 10 from the first conveying end 41 to the second conveying end 42. In this embodiment, the conveying platform 40 is composed of a plurality of conveying rollers 43 that are disposed on a conveying seat 44 in a rolling manner in the same direction. When the lifting platform 22 descends from the modification position to the transport position, the optical substrate 10 on the lifting platform 22 touches the first conveying roller 43 of the conveying platform 40, thereby transporting the modified optical substrate 10 from the first conveying end 41 to the second conveying end 42.

The film-tearing unit 50 is adjacent to the second conveying end 42 of the conveying platform 40 and is used for the modified optical substrate 10 to pass through, so as to tear off the first protective film 12 and the second protective film 13 of the optical substrate 10 from the substrate body 11. In this embodiment, the film-tearing unit 50 has a first roller assembly 51, a second roller assembly 52 located below the first roller assembly 51, a first peeling tape 53 cyclically arranged around the first roller assembly 51 and having a first adhesive portion 531 (e.g., adhesive), and a first peeling tape 53 cyclically arranged around the second roller assembly 52. The roller assembly 52 has a second tear tape 54 with a second adhesive portion 541 (e.g., adhesive). When the optical substrate 10 passes between the first roller assembly 51 and the second roller assembly 52, the first adhesive portion 531 of the first tear tape 53 adheres to the modified first protective film 12 of the optical substrate 10 and tears the first protective film 12 off the substrate body 11. The second adhesive portion 541 of the second tear tape 54 adheres to the modified second protective film 13 of the optical substrate 10 and tears the second protective film 13 off the substrate body 11.

The relay platform 60 is adjacent to the film-tearing unit 50 and is used to receive the substrate body 11 after the film is torn off by the film-tearing unit 50 , so that the substrate body can be stably disposed on the relay platform 60 .

6 and 7 , the air flotation platform 70 is adjacent to the relay platform 60 and is provided for the substrate body 11 to be set. The air flotation platform 70 has an air flotation table 71. The air flotation table 71 has a first air flotation end 711 adjacent to the relay platform 60, a second air flotation end 712 opposite to the first air flotation end 711, and a plurality of air holes 713, each of which outputs gas.

6 and 7 , the transfer unit 80 is disposed above the relay platform 60 and the air flotation platform 70, and is used to move the substrate body 11 on the relay platform 60 to the first air flotation end 711 of the air flotation platform 70, and its transfer state is shown in FIG. 3 to FIG. 5 ; in this embodiment, the transfer unit 80 includes a transfer guide rail 81 disposed above the relay platform 60 and the air flotation platform 70, and a clamping module 82 disposed on the transfer guide rail 81, and the clamping module 82 has a clamping body 821 that can be reciprocated and disposed on the transfer guide rail 81, and a clamping arm 822 that can be displaced up and down and disposed on the clamping body 821 and is used to clamp or release the substrate body 11.

6 and 7 , the pushing unit 90 is located between the air-floating platform 70 and the transfer unit 80, and is used to push the substrate body 11 on the first air-floating end 711 toward the second air-floating end 712. In this embodiment, the pushing unit 90 includes a pushing guide rail 91 disposed above the air-floating platform 70, and a pushing member 92 that can be reciprocated on the pushing guide rail 91, and the pushing member 92 has a pushing portion 921 for pushing the substrate body 11.

The substrate box A is adjacent to the second air-floating end 712 of the air-floating platform 70 , and is used to receive the substrate body 11 pushed toward the second air-floating end 712 by the pushing unit 90 .

The above is a description of the main components of the embodiment of the present invention. The operation mode and effect of the present invention are described as follows:

Referring to Figures 1A and 1B, when the optical substrate 10 to be peeled off is placed on the lifting platform 22 of the lifting unit 20, and the lifting platform 22 is at the modification position, the surface modification unit 30 is controlled to generate a modification medium 31 for the optical substrate 10, and the modification medium 31 acts on the first protective film 12 and the second protective film 13 of the substrate body 10 to change the surface properties of the first protective film 12 and the second protective film 13, so that the surfaces of the first protective film 12 and the second protective film 13 have higher adhesion.

Referring to FIG. 2A , the lifting platform 22 is then controlled to descend to the conveying position so that the optical substrate 10 on the lifting platform 22 contacts the first conveying roller 43 of the conveying platform 40 , thereby conveying the modified optical substrate 10 from the first conveying end 41 to the second conveying end 42 . Referring to FIG. 2B , the transport platform 40 then transports the optical substrate 10 to the film tearing unit 50. When the optical substrate 10 enters between the first roller assembly 51 and the second roller assembly 52 of the film tearing unit 50, the first adhesive portion 531 of the first tear tape 53 is adhered to the first protective film 12 of the optical substrate 10, and the second adhesive portion 541 of the second tear tape 54 is adhered to the second protective film 13 of the optical substrate 10. Meanwhile, the first tear tape 53 and the first protective film 12, and the second tear tape 54 and the second protective film 13 are pressed by the first roller assembly 51 and the second roller assembly 52 respectively, so that they are adhered to each other as a whole. Then, the first protective film 12 and the second protective film 13 of the optical substrate 10 are torn off from the substrate body 11 by the first tear-off tape 53 and the second tear-off tape 54 circulating in opposite directions.

3 , after the substrate body 11 passing through the film tearing unit 50 is placed on the intermediate platform 60 , the clamping body 821 of the transfer unit 80 is controlled to be located above the substrate body 11 , and the clamping arm 822 is controlled to move downward to clamp the substrate body 11 .

4 to 6 , the clamping arm 822 is then controlled to move upward, the clamping body 821 is moved rightward, and the clamping arm 822 is moved downward, thereby placing the substrate body 11 on the first air-floating end 711 of the air-floating platform 70 .

6 and 7 , the push member 92 of the push unit 90 is then controlled to move to the right, so that the push portion 921 of the push member 92 pushes against the substrate body 11, thereby moving the substrate body 11 from the first air flotation end 711 of the air flotation platform 70 toward the second air flotation end 712, and finally allowing the substrate body 11 to enter the substrate box A for subsequent coating operations.

It is worth noting that when the push member 92 pushes the substrate body 11, it can control the air flotation table 71 of the air flotation platform 70 to output gas, so that the substrate body 11 is air-floated on the air flotation table 71, thereby preventing the substrate body 11 from being damaged by friction with the air flotation platform 71 during the pushing process.

As can be seen from the above, by means of the design of the lifting unit 20 in combination with the surface modification unit 30, when the optical substrate 10 is in the modification position, the surface properties of the first protective film 12 and the second protective film 13 are changed through the modification medium generated by the surface modification unit 30, so that when the optical substrate 10 is transported to the film tearing unit 50 via the transport platform 40, the adhesion between the first adhesive portion 531 of the first tear tape 53 and the first protective film 12 is increased, and the adhesion between the second adhesive portion 541 of the second tear tape 54 and the second protective film 13 is increased, so that the film tearing unit 50 can indeed tear the first protective film 12 and the second protective film 13 off the substrate body 11, so as to improve the film tearing yield.

On the other hand, by combining the lifting unit 20 with the surface modification unit 30, the conveying platform 40, the film tearing unit 50, the relay platform 60, the air flotation platform 70, the transfer unit 80, and the pushing unit 90, the automatic film tearing operation of the optical substrate 10 can be realized. In particular, during the film tearing process, the surface of the optical substrate 10 does not come into contact with other objects, thereby minimizing possible damage to the surface of the optical substrate 10, effectively avoiding damage to the optical substrate 10 during the automatic film tearing process, thereby improving the subsequent coating quality and yield.

10: Optical substrate 11: Substrate body 12: First protective film 13: Second protective film 20: Lifting unit 21: Lifting seat 22: Lifting platform 30: Surface modification unit 31: Modified medium 40: Conveying platform 41: First conveying end 42: Second conveying end 43: Conveying roller 44: Conveying seat 50: Film peeling unit 51: First roller set 52: Second roller set 53: First peeling tape 531: First adhesive part 54: Second peeling tape 541: Second adhesive part 60: Relay platform 70: Air floating platform 71: Air floating table 711: First air floating end 712: Second air floating end 713: Air hole 80: Transfer unit 81: Transfer rail 82: Clamping module 821: Clamping body 822: Clamping arm 90: Pushing unit 91: Pushing rail 92: Pushing member 921: Pushing part A: Substrate box

FIG1A is a schematic diagram of an embodiment of the present invention, showing the state where the lifting platform is in the modification position and the surface modification unit generates a modification medium for the protective film; FIG1B is a partial enlarged view of FIG1A; FIG2A is a schematic diagram of an embodiment of the present invention, showing the state where the lifting platform is in the transport position and the film tearing unit tears the film of the optical substrate; FIG2B is a partial enlarged view of FIG2A; FIG3 is a schematic diagram of an embodiment of the present invention, showing the state where the transfer unit clamps the substrate body; FIG4 is a schematic diagram of an embodiment of the present invention, showing the state where the transfer unit clamps the substrate body from the relay platform; FIG5 is a schematic diagram of an embodiment of the present invention, showing the state where the transfer unit clamps the substrate body on the air flotation platform; FIG6 is a schematic diagram of an embodiment of the present invention, showing the state of the transfer unit resetting and the push unit actuating; and FIG7 is a schematic diagram of an embodiment of the present invention, showing the state of the push unit pushing the substrate body to the storage rack.

10: Optical substrate

20: Lifting unit

21: Lifting seat

22: Lifting platform

30: Surface modification unit

31: Modified medium

40: Transport platform

41: First transport end

42: Second transmission end

43:Conveyor roller

44:Transport seat

50: Film tearing unit

51: First roller set

52: Second roller set

53: First tear off the tape

54: Second tear off the tape

60: Relay platform

70: Air floating platform

71: Air-floating countertop

80:Transfer unit

81:Transfer rail

82: Clamping module

821: Clamping body

822: Clamping arms

90: Propulsion unit

91: Push rails

92: Push piece

921: Promotion Department

A: Substrate box

Claims (9)

An automatic film-tearing device is suitable for automatically tearing a film from an optical substrate. The optical substrate has a substrate body, a first protective film arranged on the upper surface of the substrate body, and a second protective film arranged on the lower surface of the substrate body. The automatic film-tearing device includes: a lifting unit having a lifting platform, the lifting platform is provided for the optical substrate to be set and can be lifted and lowered between a modification position and a conveying position; a surface modification unit is arranged on one side of the lifting unit and corresponds to the modification position. When the lifting platform is at the modification position, the surface modification unit generates a modification medium for the optical substrate; a conveying platform is arranged below the surface modification unit and corresponds to the conveying position. The conveying platform has a first conveying end adjacent to the lifting unit and a second conveying end opposite to the first conveying end. When the lifting platform is at the conveying position, the conveying platform moves the optical substrate from the first conveying end to the second conveying end. The optical substrate is transported from one conveying end to the second conveying end; and a film-tearing unit is adjacent to the second conveying end of the conveying platform and is used for the optical substrate to pass through and is used to tear the first protective film and the second protective film of the optical substrate off the substrate body; wherein the film-tearing unit has a first roller set, a second roller set below the first roller set, a first tearing tape cyclically arranged around the first roller set and having a first adhesive portion, and a A second peeling tape having a second adhesive portion is cyclically arranged around the second roller assembly. When the optical substrate passes between the first roller assembly and the second roller assembly, the first adhesive portion of the first peeling tape adheres to the first protective film of the optical substrate and tears the first protective film off the substrate body. The second adhesive portion of the second peeling tape adheres to the second protective film of the optical substrate and tears the second protective film off the substrate body. The automatic film tearing device as described in claim 1, wherein the modified medium produced by the surface modification unit is plasma. An automatic film tearing device as described in claim 1, wherein the conveying platform is composed of a plurality of conveying rollers. The automatic film tearing device as described in claim 1 further comprises a relay platform adjacent to the film tearing unit, and the relay platform is provided for the substrate body to be set. The automatic film tearing device as described in claim 4 further comprises an air-floating platform adjacent to the relay platform, a transfer unit disposed above the relay platform and the air-floating platform, and a pushing unit disposed between the air-floating platform and the transfer unit. The air-floating platform is provided for the substrate body to be disposed thereon, and has a first air-floating end adjacent to the relay platform, and a second air-floating end opposite to the first air-floating end. The transfer unit is used to move the substrate body on the relay platform to the first air-floating end of the air-floating platform, and the pushing unit is used to push the substrate body on the first air-floating end toward the second air-floating end. The automatic film tearing device as described in claim 5, wherein the air-floating platform has an air-floating table surface, and the air-floating table surface has a plurality of air holes. The automatic film tearing device as described in claim 5, wherein the transfer unit comprises a transfer rail disposed above the relay platform and the air-floating platform, and a clamping module disposed on the transfer rail, the clamping module having a clamping body disposed on the transfer rail capable of reciprocating displacement, and a clamping arm disposed on the clamping body capable of up and down displacement and used to clamp or release the substrate body. The automatic film tearing device as described in claim 5, wherein the pushing unit comprises a pushing guide rail disposed above the air-floating platform, and a pushing member disposed on the pushing guide rail capable of reciprocating displacement, the pushing member having a pushing portion for pushing against the substrate body. The automatic film tearing device as described in claim 5 further includes a substrate box adjacent to the second air-floating end of the air-floating platform, which is used to receive the substrate body pushed toward the second air-floating end by the pushing unit.

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