WO2018000335A1 - 手机屏维修设备及方法 - Google Patents

手机屏维修设备及方法 Download PDF

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Publication number
WO2018000335A1
WO2018000335A1 PCT/CN2016/087906 CN2016087906W WO2018000335A1 WO 2018000335 A1 WO2018000335 A1 WO 2018000335A1 CN 2016087906 W CN2016087906 W CN 2016087906W WO 2018000335 A1 WO2018000335 A1 WO 2018000335A1
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WO
WIPO (PCT)
Prior art keywords
sealed box
mobile phone
phone screen
solenoid valve
cylinder
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Application number
PCT/CN2016/087906
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English (en)
French (fr)
Inventor
王易
Original Assignee
深圳市必修客技术有限公司
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Publication date
Application filed by 深圳市必修客技术有限公司 filed Critical 深圳市必修客技术有限公司
Priority to PCT/CN2016/087906 priority Critical patent/WO2018000335A1/zh
Publication of WO2018000335A1 publication Critical patent/WO2018000335A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure

Definitions

  • the present invention relates to the field of mobile phone screens, and in particular to a mobile phone screen maintenance device and method.
  • the mobile phone screen generally includes a liquid crystal display and a glass cover plate; the adjacent two layers are generally formed by OCA optical glue in a vacuum environment.
  • the screen of the mobile phone breaks down, usually the glass cover is broken and the LCD screen is intact.
  • bubbles are often generated between the new glass cover and the original liquid crystal display. .
  • how to remove the broken glass cover without damaging the liquid crystal display is also a troublesome problem.
  • the existing mobile phone screen repair equipment is bulky and has a single function.
  • One machine can only do one or two processes; for the maintenance of the mobile phone screen, multiple devices need to be used together.
  • the invention is directed to removing the broken glass cover during the maintenance process of the mobile phone screen, and when the new glass cover is attached to the original liquid crystal display, the new glass cover and the original liquid crystal are often used.
  • a problem of bubble generation between the display screens is proposed, and a mobile phone screen maintenance device and method are proposed.
  • the invention provides a mobile phone screen maintenance device, comprising a sealing box and a sealing door device arranged on the sealing box, further comprising a hot pressing plate disposed in the sealing box and the hot pressing plate being arranged in the sealed box by the piston a cylinder for pressing a screen of a mobile phone screen, characterized in that the maintenance device further comprises a first control unit for connecting the air compressor to the cylinder and supplying air during pressing; further comprising a second control unit that connects the first vacuum pump to the sealed box to evacuate the inside of the sealed box; and further includes communicating the air compressor with the sealed box to degas the mobile phone screen workpiece to apply air pressure to the sealed box
  • the third control unit; the maintenance device further includes a master control unit that respectively connects and controls the first control unit, the second control unit, and the third control unit.
  • the first control unit includes a first electromagnetic valve disposed between the air compressor and the air inlet of the cylinder; and further includes a first portion disposed between the air compressor and the air outlet of the cylinder a solenoid valve; the first control unit further includes a gas source output port switching valve, wherein the first port of the gas source output port switching valve is in communication with the air compressor, and the second port and the second solenoid valve of the gas source output port switching valve The outlet of the gas source outlet switching valve is in communication with the inlet of the first solenoid valve; the gas source outlet switching valve is configured to realize the first conduit between the first port and the second port and the first Switching of the second line between the port and the third port.
  • the mobile phone screen repairing device of the present invention further includes a first air pressure gauge for monitoring air pressure inside the cylinder, the first air pressure gauge and the first electromagnetic valve inlet, the second electromagnetic valve outlet, and the gas The first port of the source output port switching valve is connected.
  • the third control unit includes a third electromagnetic valve for closing or conducting the first intake passage of the sealed box to control whether the air compressor is connected to the sealed box;
  • the second control unit includes a fourth solenoid valve for closing or conducting the sealed box evacuation passage to control whether the first vacuum pump is communicated into the sealed box.
  • the above-mentioned mobile phone screen repairing device of the present invention further comprises a balance electromagnetic valve for closing or conducting the second intake passage of the sealed box for balancing the air pressure between the sealed box and the external environment.
  • the mobile phone screen maintenance device of the present invention further includes a second air pressure gauge for measuring the air pressure inside the sealed box; a first intake passage of the sealed box, a second intake passage of the sealed box, a vacuum chamber of the sealed box, and a second air pressure
  • a second air pressure gauge for measuring the air pressure inside the sealed box
  • the main control unit includes the fourth electromagnetic valve, the third electromagnetic valve, the second pneumatic pressure gauge, the hot pressing plate, the first electromagnetic valve, the second electromagnetic valve, and the balance electromagnetic valve respectively. Connected processor.
  • the main control unit controls the hot plate to heat up to 45 ° C to 60 ° C; and the control cylinder drives the hot plate to apply a pressure of 0.2 MPa to 0.5 MPa to the workpiece of the mobile phone screen; And controlling the first vacuum pump to evacuate the vacuum inside the sealed box to less than 2 kPa.
  • the total control unit controls the air compressor so that the pressure inside the sealed box is between 0.3 MPa and 0.6 MPa; and the hot plate is controlled to heat the inside of the sealed box.
  • the internal temperature of the sealed box reaches 40 ° C ⁇ 55 ° C, and maintained for 3 min ⁇ 15min.
  • the mobile phone screen repairing device of the present invention further includes an adsorption device disposed at the top of the sealed box, the adsorption device including an adsorption plate having a plurality of holes on one surface thereof and the plurality of holes communicating with each other on the other surface thereof, respectively An electric heating element and a temperature sensor embedded in the adsorption plate, a bottom plate connected to the other surface of the adsorption plate, a vacuum pump joint communicating with the cavity surrounded by the other surface of the adsorption plate and the bottom plate, and a vacuum pump joint A second vacuum pump that is in communication; the service device further includes a housing in which the second vacuum pump is disposed.
  • the electric heating element is controlled to reach 65 ° C to 90 ° C, and the second vacuum pump is controlled to continuously generate a negative pressure in the hole. 4min-14min.
  • the processor controls the third electromagnetic valve to be closed, the fourth electromagnetic valve to be turned on, and controls the balance electromagnetic valve to close the second intake passage of the sealed box;
  • the second barometer When the second barometer detects that the inside of the sealed box is evacuated to a vacuum of less than 2 kPa, the second barometer is used to send a processing signal to the processor, the processor controls the fourth solenoid valve to close, and controls the heating plate to heat up to 45 ° C. ⁇ 60 ° C:
  • the processor controls the first electromagnetic valve to be turned on and the second electromagnetic valve to be closed, so that the air compressor is filled with gas into the cylinder, so that the cylinder drives the hot pressing plate to apply a pressure of 0.2 MPa to 0.5 MPa to the workpiece of the mobile phone screen;
  • the processor controls the third electromagnetic valve to be closed, and controls the hot pressing plate to heat the inside of the sealed box, so that the internal temperature of the sealed box reaches 40 ° C to 55 ° C, and is maintained for 3 min to 15 min;
  • the control balance solenoid valve conducts the air outlet passage of the sealed box to balance the air pressure inside and outside the sealed box.
  • the invention also provides a method for repairing a mobile phone screen workpiece, comprising the following steps:
  • the temperature for heating the mobile phone screen workpiece is 45 ° C to 60 ° C
  • the pressure applied to the mobile phone screen workpiece by the piston is 0.2 MPa to 0.5 MPa
  • the first vacuum pump evacuates the sealed box to a vacuum of less than 2 kPa.
  • the inside of the sealed box is filled with gas so that the internal space pressure of the sealed box is between 0.3 MPa and 0.6 MPa; and the inside of the sealed box is simultaneously passed through a hot pressing plate.
  • the space is heated so that the internal temperature of the sealed box is 40 ° C ⁇ 55 ° C, and maintained for 3 min ⁇ 15 min.
  • the method further comprises: removing the broken glass cover from the touch screen, and cutting the separation glass as follows:
  • the method before the step S02, the method further comprises the step of coating the broken glass cover with tape.
  • the step S2 includes the following steps:
  • the third electromagnetic valve is controlled to close the first intake passage of the sealed box
  • the fourth electromagnetic valve is controlled to open the vacuum chamber of the sealed box
  • the balance electromagnetic valve is closed to close the second intake passage of the sealed box ;
  • the second air pressure gauge When the second air pressure gauge detects that the inside of the sealed box is evacuated until the vacuum degree is less than 2 kPa, the second air pressure gauge sends a processing signal to the processor, and after receiving the processing signal, the processor controls the fourth electromagnetic valve to close the sealed box to evacuate. Channel, then control the hot plate to heat up to 45 ° C ⁇ 60 ° C;
  • the first electromagnetic valve is controlled to close the intake passage of the cylinder
  • the second electromagnetic valve is controlled to conduct the air outlet passage of the cylinder to release the gas inside the cylinder, thereby separating the hot plate from the screen of the mobile phone screen.
  • step S4 comprises the following steps:
  • a second intake passage controlled by the balanced solenoid valve is directly disposed between the sealed box and the external environment, and the step S5 is implemented by controlling the balance solenoid valve to conduct the second intake passage.
  • the mobile phone screen repairing device of the invention heats the new glass cover plate on the original liquid crystal display screen under vacuum condition, and at the same time, makes the new glass cover plate and the original under high air pressure and a slightly high temperature environment.
  • the bubbles between the liquid crystal display are dispersed in the OCA optical glue, which is indistinguishable to the naked eye, thereby achieving the defoaming effect.
  • the maintenance device of the invention has good defoaming effect and strong practicability.
  • Figure 1 shows a schematic view of a service device of an embodiment of the present invention
  • Figure 2 is a schematic exploded view of the maintenance device shown in Figure 1;
  • Figure 3 is a gas path diagram of the maintenance device shown in Figure 1;
  • FIG. 4 is a functional block diagram of the maintenance device shown in FIG. 1.
  • the technical problem to be solved by the invention is that in the process of repairing the screen of the mobile phone, after the broken glass cover is removed, when the new glass cover is attached to the original liquid crystal display, the new glass is often used. Air bubbles are generated between the cover and the original LCD screen. In addition, it is difficult to remove the broken glass cover from existing equipment.
  • the technical idea of solving the technical problem proposed by the invention is: under the vacuum condition, the new glass cover is hot pressed on the original liquid crystal display, and at the same time, the new glass is made under the high pressure and slightly high temperature environment. The bubbles between the cover and the original LCD screen are dispersed in the OCA optical glue, which is indistinguishable to the naked eye, thereby achieving the defoaming effect.
  • the present invention provides a mobile phone screen maintenance device including a sealing box 1 and a sealing door device disposed on the sealing box 1, and a heat pressing plate 14 disposed in the sealing box 1 and The cylinder 3 for pressing the heat-pressing plate 14 to the mobile phone screen workpiece in the sealed box 1 by the piston; in the embodiment, the maintenance device further includes a casing, and the sealing box 1 is disposed inside the casing. This housing can be used to protect the sealed box 1. In other embodiments, the service device may not include a housing. Further, in the present embodiment, the electric heating plate 14 is internally embedded with an electric heating element and a temperature sensor, and the hot pressing plate 14 generates heat by the electric heating element. In other embodiments, the heat plate 14 can also be electrically connected to the electric heater and generate heat by heat conduction.
  • the maintenance device further includes a device for connecting the air compressor 4 to the cylinder 3 and supplying air during pressing, thereby controlling the cylinder 3 to press the hot plate 14 to press the workpiece of the mobile phone screen.
  • a control unit further comprising a second control unit for inserting the first vacuum pump 2 into the sealed box 1 during vacuuming to evacuate the inside of the sealed box 1; further comprising for emptying the screen of the mobile phone screen a third control unit in which the press 4 communicates with the sealed box 1 to apply air pressure to the sealed box 1;
  • the maintenance device further includes a total of connecting and controlling the first control unit, the second control unit and the third control unit, respectively Control unit.
  • the sealed case 1 has a large volume, it is necessary to adopt an external high-power first vacuum pump to quickly evacuate the inside of the sealed case 1.
  • the air compressor 4 may be externally connected or mounted on the sealed box 1.
  • the outer casing volume needs to be enlarged.
  • the first control unit includes air inlets disposed in the air compressor 4 and the cylinder 3.
  • a first solenoid valve 5 for closing or conducting the intake passage of the cylinder 3; further comprising an outlet passage for closing or conducting the air passage of the cylinder 3 between the air compressor 4 and the air outlet of the cylinder 3.
  • the second solenoid valve 6; the inlet of the first solenoid valve 5 and the outlet of the second solenoid valve 6 are both connected to a first barometer 10 for monitoring the internal pressure of the cylinder 3.
  • the air compressor 4 inflates the cylinder 3, thereby realizing the passage of the cylinder 3 through the piston (not shown) It is shown that the heat platen 14 is driven to move downward, thereby achieving the purpose of applying pressure to the workpiece of the mobile phone screen.
  • the first electromagnetic valve 5 closes the intake passage of the cylinder and the second electromagnetic valve 6 turns on the air outlet passage of the cylinder 3, the gas inside the cylinder 3 can be released, thereby moving the hot plate upward, thereby achieving hot pressing.
  • the plate 14 is separated from the new glass cover.
  • the intake passage and the outlet passage of the cylinder 3 may be the same passage, so that only one valve may be provided between the air compressor 4 and the cylinder 3, and the inside of the cylinder 3 needs to be filled with gas, or In the process of releasing the gas inside the cylinder 3, the communication passage between the air compressor 4 and the cylinder 3 can be turned on or off by this one valve.
  • the first air pressure gauge 10 By the data monitored by the first air pressure gauge 10, it can be judged that the cylinder 3 drives the hot platen 14 to apply a pressure value to the mobile phone screen workpiece.
  • the first control unit further includes a gas source output port switching valve 18, and the first port P of the gas source output port switching valve 18 is respectively associated with the air compressor 4 and the A gas pressure gauge 10 is connected, and the second air port A of the air source output port switching valve 18 is in communication with the outlet of the second electromagnetic valve 6, the third port B of the air source output port switching valve 18 and the inlet of the first solenoid valve 5
  • the air source output port switching valve 18 is configured to realize switching of the first pipe between the first port P and the second port A and the second line between the first port P and the third port B.
  • the air source output port switching valve 18 is mainly used to cooperate with the second solenoid valve 6 to completely close the air outlet passage of the cylinder 3, thereby preventing the pressure inside the cylinder 3 from leaking and causing the piston in the cylinder 3 to rise.
  • the air source output port switching valve 18 is a five-position three-way solenoid valve, and further includes a fourth port R and a fifth port S, and the fourth port R and the fifth port S are respectively provided with a muffler 16 .
  • the fourth port R and the fifth port S are both used to discharge the gas into the external environment when the cylinder 3 is exhausted. The noise generated by the deflation of the cylinder 3 can be eliminated by the two silencers 16.
  • a first throttle valve for adjusting the exhaust speed of the cylinder 3 is further disposed between the second solenoid valve 6 and the cylinder 3, and a second valve for adjusting the intake speed of the cylinder 3 is further disposed between the first solenoid valve 5 and the cylinder 3. Throttle valve.
  • the third control unit includes a third solenoid valve 7 for closing or conducting the first intake passage of the sealed box 1; the air compressor 4 passes through the third solenoid valve 7 is connected to the inside of the sealed box 1 For filling the inside of the sealed box 1 with gas; by this technical solution, the air compressor 4 is used not only for inflating the cylinder 3 but also for inflating the inside of the sealed box 1.
  • the second control unit includes a fourth solenoid valve 8 for closing or conducting the vacuum passage of the sealed box 1; the first vacuum pump 2 communicates with the inside of the sealed box 1 via the fourth solenoid valve 8.
  • the service device further includes a balance solenoid valve 19 for closing or conducting the second intake passage of the sealed casing 1 for balancing the pressure inside and outside the sealed casing 1.
  • the maintenance device further comprises a second air pressure gauge 9 for measuring the internal air pressure of the sealed box 1; in the embodiment, the second air pressure gauge is a digital pressure gauge with an analog output, except that the measurement shows the internal negative pressure of the sealed box In addition, it also plays a role in controlling the pressure range of the sealed box.
  • the upper pressure limit and the lower pressure limit can be set on the digital pressure gauge.
  • the digital pressure gauge gives the corresponding signal to the processor.
  • the processor controls the internal exhaust of the sealed box; when the internal pressure of the sealed box is lower than the lower pressure limit, the digital pressure gauge also gives a corresponding signal to the processor, and the processor controls the inside of the sealed box to be inflated.
  • the first intake passage of the sealed casing 1, the second intake passage of the sealed casing 1, the evacuation passage of the sealed casing 1, the second pneumatic gauge 9, and the inside of the sealed casing 1 communicate with each other through the five-way joint 15. Through the second air pressure gauge 9, the vacuuming condition inside the sealed casing 1 can be detected, thereby driving the cylinder 3 at a more appropriate time, and the fitting process of the mobile phone screen workpiece is realized.
  • the maintenance apparatus further includes an adsorption device disposed on the top of the sealed box 1, and in the present embodiment, the adsorption device is disposed on the outer casing. top.
  • the adsorption device includes an adsorption plate 11 having a plurality of holes and communicating with each other on the lower surface, an electric heating element and a temperature sensor respectively embedded in the adsorption plate 11, a bottom plate connected to the lower surface of the adsorption plate 11, and adsorption.
  • the second vacuum pump 12 may also be externally connected to the sealed box 1.
  • the adsorption plate is heated by the built-in electric heating element.
  • the main control unit is respectively the fourth electromagnetic valve 8, the third electromagnetic valve 7, the second pneumatic pressure gauge 9, the hot pressing plate 14, the first electromagnetic valve 5, and the second electromagnetic
  • the valve 6 and the balance solenoid valve 19 are electrically connected to the processor 13; when the first vacuum pump 2 is connected to the sealed box 1, the processor 13 is configured to control the third electromagnetic valve 7 to close the first intake passage of the sealed box 1, the control The fourth solenoid valve 8 is connected to the sealed box 1 to draw a vacuum passage, and controls the balance solenoid valve 19 to close the second intake passage of the sealed box 1;
  • the second air pressure gauge 9 detects that the inside of the sealed box 1 is evacuated to a vacuum of less than 2 kPa (specifically, the second air pressure gauge 9 detects that the inside of the sealed box 1 is evacuated until the vacuum reaches 0 kPa, or self-sealing is detected.
  • the second barometer 9 is configured to send a processing signal to the processor 13 within 50 s after the inside of the tank 1 is started to be evacuated, and the inside of the sealed box 1 is evacuated to a degree of vacuum of less than 2 kPa.
  • the processor 13 is configured to receive the signal.
  • the fourth electromagnetic valve 8 is controlled to close the vacuum channel of the sealing box 1, and then the heating plate 14 is controlled to heat up to 45 ° C to 60 ° C (here, the setting temperature is based on the size of the workpiece of the mobile phone screen, the ambient temperature, The fitting time is determined by the relevant factors; then, the processor is configured to control the first electromagnetic valve 5 to open the intake passage of the cylinder 3 (in the embodiment, the processor 13 also controls the air source output switching valve 18, so that a first line between the first port (P) and the second port (A), and controlling the second solenoid valve 6 to close the outlet passage of the cylinder 3, thereby facilitating the air compressor 4 to charge the inside of the cylinder 3, So that the cylinder 3 piston drives the hot plate 14 to the mobile screen workpiece Adding a pressure of 0.2 MPa to 0.5 MPa; then, the processor 13 is for controlling the first electromagnetic valve 5 to close the intake passage of the cylinder 3, and controlling the second electromagnetic valve 6 to open the outlet passage of the cylinder 3 to raise the piston of
  • the processor 13 is configured to control the second electromagnetic valve 6 to close the air outlet passage of the cylinder 3, and control the third electromagnetic valve 7 to open the first intake passage of the sealing box 1, while the balance solenoid valve 19 closes the sealed box 1 Intake passage; so that the air compressor 4 is filled with gas into the inside of the sealed box 1, so that the pressure inside the sealed box 1 is between 0.3 MPa and 0.6 MPa;
  • the processor 13 is further configured to control the third electromagnetic valve 7 to close the first intake passage of the sealed box 1, and control the hot pressing plate 14 to heat the inside of the sealed box 1, so that the internal temperature of the sealed box 1 reaches 40 ° C to 55 ° C, and remains 3min ⁇ 15min; Finally, the processor is also used to control the balance solenoid valve 19 to open the air outlet passage of the sealing box 1 to balance the air pressure inside and outside the sealing box 1.
  • the order of the internal heating process of the sealed case 1 and the process of charging the inside of the sealed case 1 are not required, that is, the process of heating inside the sealed case 1 may be preceded, and the process of charging the inside of the sealed case 1 is performed. Thereafter, the process of heating the inside of the sealed case 1 may be followed, and the process of charging the inside of the sealed case 1 is preceded.
  • the processor 13 is also electrically connected to the control panel 17, as shown in FIG. 1, the control panel 17 is configured to input to the processor 13 that the workpiece processing of the mobile phone screen is included.
  • Control signal of the process parameter so that the processor 13 controls the fourth solenoid valve 8, the third solenoid valve 7, the second barometer 9, the hot plate 14, the first solenoid valve 5, the second solenoid valve 6, and the balance, respectively.
  • Solenoid valve 19 completes the workpiece on the mobile screen Processing.
  • the electrothermal and vacuuming process of the adsorption device at the top of the sealed box can also be controlled by the processor 13, or it can be controlled by a physical button alone.
  • the present invention proposes a maintenance method for a mobile phone screen workpiece based on the above maintenance device, comprising the following steps:
  • Step S0 removing the broken glass cover from the liquid crystal display
  • step S0 includes the following sub-steps:
  • Sub-step S01 heating the adsorption plate 11 having a hole to 65 ° C ⁇ 90 ° C;
  • Sub-step S02 the mobile phone screen workpiece that is broken by the glass cover plate is placed on the adsorption plate 11; and the broken glass cover plate faces the adsorption plate 11 and covers the opening of the top of the hole; in this embodiment, the mobile phone screen and the adsorption plate
  • the pad between the 11 is provided with a holed silicone pad for sealing and slipping between the mobile phone screen and the adsorption plate 11; the center position of the hole of the silicone pad is aligned with the hole of the adsorption plate 11, so that the pumping is not affected The patency of the vacuum process.
  • Sub-step S03 vacuuming the hole through the bottom opening of the hole to generate a negative pressure inside the hole, so that the broken glass cover plate is adsorbed on the adsorption plate 11; the vacuuming process lasts for 4 min to 14 min.
  • Sub-step S04 cutting through a contact surface of the broken glass cover plate and the liquid crystal display screen through a wire having a diameter of 0.06 mm to 0.18 mm, and breaking the adhesive layer between the broken glass cover plate and the liquid crystal display screen , thereby removing the broken glass cover from the liquid crystal display.
  • the wire is a diamond wire. It can be understood that the diamond wire is an example, and any wire having a sufficient strength can be used.
  • the adhesive layer is softened to facilitate cutting.
  • the broken glass cover is adsorbed on the adsorption plate 11 under the action of atmospheric pressure. At this time, the broken glass cover can be separated from the liquid crystal display by cutting the contact surface of the broken glass cover with the liquid crystal display.
  • the glass cover plate shattered mobile phone screen can also be treated by microwave heating, and the bonding strength between the glass cover and the liquid crystal display can also be reduced.
  • the glass cover is too fragmented, and the broken glass cover cannot seal the top opening of the hole.
  • the cover glass cannot be adsorbed on the adsorption plate 11.
  • the broken glass cover is covered with tape. In this way, when the hole is evacuated through the opening at the bottom of the hole, the hole does not leak, and the glass cover can be firmly adsorbed on the adsorption plate 11. .
  • Step S1 placing a new glass cover that is kept up and down and a liquid crystal display together in the sealed box 1 (specifically, a new glass cover plate coated with OCA optical glue and a liquid crystal display mold are positioned to maintain Up and down position setting, it can be understood that OCA optical glue can also be coated on the liquid crystal display.
  • OCA optical glue can also be coated on the liquid crystal display.
  • the inside of the box 1 is evacuated, and then the hot platen is driven to heat and apply pressure to the new glass cover, so that the new glass cover is attached to the liquid crystal display, thereby completing the new glass cover and the liquid crystal display.
  • the fitting that is, the bonding of the mobile screen workpiece; wherein, the heating temperature for heating the new glass cover is 45 ° C ⁇ 60 ° C, the pressing pressure for pressing the new glass cover is 0.2 MPa ⁇ 0.5 MPa, the sealed box 1
  • the inside is evacuated to a vacuum of less than 2 kPa;
  • the new glass cover is attached to the LCD through OCA optical glue. After that, under the heating and pressing process conditions, the new glass cover and the liquid crystal display can be firmly attached together. After this step is completed, there may be small bubbles between the new glass cover and the LCD screen. If the process conditions are controlled accurately, there may be no bubbles between the new glass cover and the LCD.
  • Step S2 the inside of the sealed box 1 is filled with gas, so that the pressure inside the sealed box 1 is between 0.3 MPa and 0.6 MPa; at the same time, the inside of the sealed box 1 is heated, so that the internal temperature of the sealed box 1 is 40 ° C to 55 ° C, And keep it for 3min ⁇ 15min.
  • Step S2 is an inventive and important invention of the present invention.
  • the inside of the sealed box 1 is filled with gas so that the pressure inside the sealed box 1 is between 0.3 MPa and 0.6 MPa; here, when the pressure inside the sealed box 1 is 0.4 MPa, the mobile phone
  • the defoaming effect and efficiency of the screen workpiece are relatively balanced.
  • the air bubbles can be squeezed under the pressure of the inside of the sealed box and dispersed into the OCA glue until the naked eye can Resolve to achieve the defoaming effect.
  • the method further comprises: releasing the high-pressure gas inside the sealed box 1.
  • the mobile phone screen repairing device of the invention heats the new glass cover plate on the original liquid crystal display screen under vacuum condition, and at the same time, makes the new glass cover plate and the original under high air pressure and a slightly high temperature environment.
  • the bubbles between the liquid crystal display are dispersed in the OCA optical glue, which is indistinguishable to the naked eye, thereby achieving the defoaming effect.
  • Ben The invented maintenance device has good defoaming effect and strong practicability.

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  • Fluid Mechanics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种手机屏维修设备及方法；维修设备包括密封箱(1)及设在密封箱(1)上的密封门装置，还包括设置在密封箱(1)内的热压板(14)以及通过活塞可使热压板(14)在密封箱(1)内对手机屏工件进行压合的气缸(3)，维修设备还包括用于在压合时将空压机(4)与气缸(3)连通并供气的第一控制单元，用于在压合时将第一真空泵(2)接入密封箱(1)以便将密封箱(1)内部抽真空的第二控制单元，用于在给手机屏工件除泡时将空压机(4)与密封箱(1)连通以便给密封箱(1)内加气压的第三控制单元及分别连接并控制第一控制单元、第二控制单元和第三控制单元的总控单元。所述维修设备通过在真空条件下，将新的玻璃盖板热压于原有液晶显示屏上，同时，在高气压和稍高温度环境下，使新的玻璃盖板和原有液晶显示屏之间的气泡分散于OCA光学胶中，从而达到除泡效果。

Description

手机屏维修设备及方法 技术领域
本发明涉及手机屏幕领域，尤其涉及一种手机屏维修设备及方法。
背景技术
手机屏一般包括液晶显示屏和玻璃盖板；相邻两层之间一般是在真空环境下通过OCA光学胶贴合而成。当手机屏幕摔坏时，通常情况下，玻璃盖板碎裂，而液晶显示屏完好。在维修过程中，将碎裂的玻璃盖板去除后，当将新的玻璃盖板贴合在原有液晶显示屏上时，经常会在新的玻璃盖板和原有液晶显示屏之间产生气泡。此外，如何将碎裂的玻璃盖板去除，而不损伤液晶显示屏也是一个麻烦问题。
现有的手机屏幕维修设备体积笨重、功能单一，一台机器只能做一两道工序；对于手机屏幕的维修，需要多台设备配合使用才能实现。
技术问题
本发明针对在手机屏幕的维修过程中，将碎裂的玻璃盖板去除后，当将新的玻璃盖板贴合在原有液晶显示屏上时，经常会在新的玻璃盖板和原有液晶显示屏之间产生气泡的问题，提出了一种手机屏维修设备及方法。
问题的解决方案
技术解决方案
本发明提出了一种手机屏维修设备，包括密封箱以及设在密封箱上的密封门装置，还包括设置在密封箱内的热压板以及通过活塞可使所述热压板在密封箱内对手机屏工件进行压合的气缸，其特征在于，所述维修设备还包括用于在压合时将空压机与气缸连通并供气的第一控制单元；还包括用于在压合时将第一真空泵接入密封箱以便将密封箱内部抽真空的第二控制单元；还包括用于在给手机屏工件除泡时将空压机与密封箱连通以便给所述密封箱内加气压的第三控制单元；所述维修设备还包括分别连接并控制第一控制单元、第二控制单元和第三控制单元的总控单元。
本发明上述的手机屏维修设备中，第一控制单元包括设置在空压机与气缸的进气口之间的第一电磁阀；还包括设置在空压机与气缸的出气口之间的第二电磁阀；第一控制单元还包括气源输出口切换阀，该气源输出口切换阀的第一气口与空压机连通，该气源输出口切换阀的第二气口与第二电磁阀的出口连通，该气源输出口切换阀的第三气口与第一电磁阀的入口连通；气源输出口切换阀用于实现第一气口和第二气口之间的第一管路以及第一气口和第三气口之间的第二管路的切换。
本发明上述的手机屏维修设备中，还包括用于监测气缸内部气压的第一气压表，所述第一气压表与所述第一电磁阀入口、所述第二电磁阀出口、所述气源输出口切换阀第一气口连通。
本发明上述的手机屏维修设备中，第三控制单元包括用于关闭或导通密封箱第一进气通道以控制所述空压机是否连通到所述密封箱内的第三电磁阀；第二控制单元包括用于关闭或导通密封箱抽真空通道以控制所述第一真空泵是否连通到所述密封箱内的第四电磁阀。
本发明上述的手机屏维修设备中，还包括用于关闭或导通密封箱第二进气通道、用于平衡密封箱内与外部环境之间气压的平衡电磁阀。
本发明上述的手机屏维修设备中，还包括用于测量密封箱内部气压的第二气压表；密封箱第一进气通道、密封箱第二进气通道、密封箱抽真空通道、第二气压表以及密封箱内部通过五通接头互相连通。
本发明上述的手机屏维修设备中，总控单元包括分别与第四电磁阀、第三电磁阀、第二气压表、热压板、第一电磁阀、第二电磁阀以及平衡电磁阀电性连接的处理器。
本发明上述的手机屏维修设备中，压合时，所述总控单元控制热压板发热至45℃～60℃；控制气缸驱动热压板给手机屏工件施加0.2MPa～0.5MPa的压力；以及控制第一真空泵将密封箱内部真空度抽真空至小于2kPa。
本发明上述的手机屏维修设备中，除泡时，所述总控单元控制空压机使密封箱内部的压强处于0.3MPa～0.6MPa之间；以及控制热压板给密封箱内部加热，使密封箱内部温度达到40℃～55℃，并保持3min～15min。
本发明上述的手机屏维修设备中，还包括设置在密封箱顶部的吸附装置，该吸附装置包括其一个面上有多个孔洞且该多个孔洞在其另一个面彼此连通的吸附板、分别嵌设在吸附板内的电加热元件和温度传感器、与吸附板所述另一个面连接的底板、与吸附板所述另一个面和底板所围成的腔体连通的真空泵接头以及与真空泵接头连通的的第二真空泵；维修设备还包括外壳，第二真空泵设置在所述外壳内。
本发明上述的手机屏维修设备中，通过所述吸附装置辅助手机屏工件切割分离时，控制所述电加热元件达到65℃～90℃，控制所述第二真空泵在所述孔洞持续产生负压4min-14min。
本发明上述的手机屏维修设备中，当密封箱接入第一真空泵时，处理器控制第三电磁阀关闭、第四电磁阀导通，并控制平衡电磁阀关闭密封箱第二进气通道；
当第二气压表检测到密封箱内部被抽真空至真空度小于2kPa时，第二气压表用于向处理器发送处理信号，处理器控制第四电磁阀关闭，控制热压板发热至45℃～60℃：
处理器控制第一电磁阀导通、第二电磁阀关闭，从而便于空压机向气缸内部充入气体，以使气缸驱动热压板给手机屏工件施加0.2MPa～0.5MPa的压力；
控制第一电磁阀关闭、第二电磁阀导通以将气缸内部的气体释放掉，从而使热压板与手机屏工件分离；
控制第二电磁阀关闭、第三电磁阀导通，以便空压机向密封箱内部充入气体，使密封箱内部的压强处于0.3MPa～0.6MPa之间；
处理器控制第三电磁阀关闭，控制热压板给密封箱内部加热，使密封箱内部温度达到40℃～55℃，并保持3min～15min；
控制平衡电磁阀导通密封箱出气通道，以平衡密封箱内外气压。
本发明还提出了一种手机屏工件的维修方法，包括以下步骤：
S1、将手机屏工件放入密封箱内并关闭密封门装置；
S2、在密封箱空间真空或负压状态下对手机屏工件加热施压，进行压合操作；
S3、经过一段时间，所述手机屏工件压合完成；
S4、向密封箱内充气加压，并给密封箱内气体加热一段时间；
S5、结束去泡操作，开启密封箱，使密封箱内外气压平衡；
S6、打开密封门装置，取出经过压合并去泡操作的手机屏工件。
本发明上述的维修方法中，所述步骤S1中，给所述手机屏工件加热的温度为45℃～60℃，通过活塞给所述手机屏工件加压的压力为0.2MPa～0.5MPa，通过第一真空泵将所述密封箱内抽真空至真空度小于2kPa。
本发明上述的维修方法中，所述步骤S4中，给所述密封箱内部充入气体，使密封箱内部空间压强处于0.3MPa～0.6MPa之间；同时通过热压板给所述密封箱内部空间加热，使密封箱内部温度为40℃～55℃，并保持3min～15min。
本发明上述的维修方法中，在S1步骤之前还包括将碎裂的玻璃盖板从触摸屏上移除，切割分离玻璃步骤如下：
S01、将具有孔洞的吸附板加热到65℃～75℃；
S02、将玻璃盖板碎裂的手机屏工件放在吸附板上；并且碎裂的玻璃盖板朝向吸附板，并覆盖孔洞顶部开口；
S03、通过孔洞底部开口给孔洞抽真空，使碎裂的玻璃盖板吸附在吸附板上；S04、通过直径为0.06mm～0.18mm的金属丝沿碎裂的玻璃盖板与液晶显示屏的接触面进行切割，从而将碎裂的玻璃盖板从液晶显示屏上移除。
本发明上述的维修方法中，在步骤S02之前，还包括：采用胶带贴满碎裂的玻璃盖板的步骤。
本发明上述的维修方法中，所述步骤S2包括以下步骤：
当第一真空泵与密封箱连接时，控制第三电磁阀关闭密封箱第一进气通道，控制第四电磁阀导通密封箱抽真空通道，并控制平衡电磁阀关闭密封箱第二进气通道；
当第二气压表检测到密封箱内部被抽真空至真空度小于2kPa时，第二气压表向处理器发送处理信号，处理器接收到该处理信号后，控制第四电磁阀关闭密封箱抽真空通道，然后控制热压板发热至45℃～60℃；
控制第一电磁阀导通气缸的进气通道，并控制第二电磁阀关闭气缸的出气通道，从而便于空压机向气缸内部充入气体，以使气缸驱动热压板给手机屏工件施 加0.2MPa～0.5MPa的压力；
控制第一电磁阀关闭气缸的进气通道，并控制第二电磁阀导通气缸的出气通道以将气缸内部的气体释放掉，从而使热压板与手机屏工件分离。
本发明上述的维修方法中，步骤S4包括以下步骤：
控制第二电磁阀关闭气缸的出气通道，并控制第三电磁阀导通密封箱第一进气通道，以便空压机向密封箱内部充入气体，使密封箱内部的压强处于0.3MPa～0.6MPa之间；
控制第三电磁阀关闭密封箱第一进气通道，并控制热压板给密封箱内部加热，使密封箱内部温度达到40℃～55℃，
保持3min～15min。
本发明上述的维修方法中，在密封箱与外部环境之间直接设置有受平衡电磁阀控制的第二进气通道，所述步骤S5是通过控制平衡电磁阀导通第二进气通道来实现。
发明的有益效果
有益效果
本发明的手机屏维修设备通过在真空条件下，将新的玻璃盖板热压于原有液晶显示屏上，同时，在高气压和稍高温度环境下，使新的玻璃盖板和原有液晶显示屏之间的气泡分散于OCA光学胶中，至肉眼无法分辨，从而达到除泡效果。本发明的维修设备除泡效果佳，实用性强。
对附图的简要说明
附图说明
图1示出了本发明实施例的维修设备的示意图；
图2为图1所示的维修设备的***示意图；
图3为图1所示的维修设备的气路图；
图4为图1所示的维修设备的功能模块图。
发明实施例
本发明的实施方式
本发明要解决的技术问题是：在手机屏幕的维修过程中，将碎裂的玻璃盖板去除后，当将新的玻璃盖板贴合在原有液晶显示屏上时，经常会在新的玻璃盖板和原有液晶显示屏之间产生气泡。此外，现有设备很难将碎裂的玻璃盖板去除。本发明提出的解决该技术问题的技术思路是：在真空条件下，将新的玻璃盖板热压于原有液晶显示屏上，同时，在高气压和稍高温度环境下，使新的玻璃盖板和原有液晶显示屏之间的气泡分散于OCA光学胶中，至肉眼无法分辨，从而达到除泡效果。
为了使本发明的技术目的、技术方案以及技术效果更为清楚，以便于本领域技术人员理解和实施本发明，下面将结合附图及具体实施例对本发明做进一步的说明。
如图1-图4所示，本发明提出了一种手机屏维修设备，包括密封箱1以及设在密封箱1上的密封门装置，还包括设置在密封箱1内的热压板14以及通过活塞可使所述热压板14在密封箱1内对手机屏工件进行压合的气缸3；在本实施例中，维修设备还包括外壳，密封箱1设置在外壳内部。该外壳可以用于对密封箱1的保护。在其他实施例中，维修设备可以不包括外壳。此外，在本实施例中，热压板14内部嵌入有电加热元件和温度传感器，该热压板14通过电加热元件进行发热。在其他实施例中，热压板14也可以与电热器电性连接，并通过热传导发热。
进一步地，所述维修设备还包括用于在压合时将空压机4与气缸3连通并供气，从而来控制所述气缸3通过活塞驱动热压板14对手机屏工件施压的第一控制单元；还包括用于在压合时将第一真空泵2接入密封箱1以便将密封箱1内部抽真空的第二控制单元；还包括用于在给手机屏工件除泡时将空压机4与密封箱1连通以便给所述密封箱1内加气压的第三控制单元；所述维修设备还包括分别连接并控制第一控制单元、第二控制单元和第三控制单元的总控单元。在这里，由于密封箱1的体积较大，因此，需要采用外接大功率第一真空泵的方式，才能快速地将密封箱1内部抽真空。进一步地，空压机4可以是外接的，也可以是安装在密封箱1上的。当第一真空泵或空压机采用内置方式时，外壳体积需要扩大。
进一步地，如图3所示，第一控制单元包括设置在空压机4与气缸3的进气口之 间、用于关闭或导通气缸3的进气通道的第一电磁阀5；还包括设置在空压机4与气缸3的出气口之间、用于关闭或导通气缸3的出气通道的第二电磁阀6；第一电磁阀5的入口和第二电磁阀6的出口均与用于监测气缸3内部气压的第一气压表10连接。在这里，当第一电磁阀5导通气缸3的进气通道，第二电磁阀6关闭气缸3的出气通道时，空压机4向气缸3充气，从而实现气缸3通过活塞(图中未示出)驱动热压板14向下运动，从而实现给手机屏工件施加压力的目的。当第一电磁阀5关闭气缸的进气通道，第二电磁阀6导通气缸3的出气通道时，即可将气缸3内部的气体释放掉，从而使热压板向上运动，从而实现热压板14与新玻璃盖板分离。在其他实施例中，而气缸3的进气通道和出气通道可以为同一通道，这样，在空压机4和气缸3之间可以只设置一个阀门，在需要向气缸3内部充入气体，或者将气缸3内部的气体释放掉的过程中，可以通过这一个阀门导通或关闭空压机4与气缸3之间的连通通道。通过第一气压表10所监测的数据，可以判断气缸3驱动热压板14向手机屏工件施加压力值的状况。
优选地，如图3所示，在本实施例中，第一控制单元还包括气源输出口切换阀18，该气源输出口切换阀18的第一气口P分别与空压机4和第一气压表10连通，该气源输出口切换阀18的第二气口A与第二电磁阀6的出口连通，该气源输出口切换阀18的第三气口B与第一电磁阀5的入口连通；气源输出口切换阀18用于实现第一气口P和第二气口A之间的第一管路以及第一气口P和第三气口B之间的第二管路的切换。在这里，气源输出口切换阀18主要用于与第二电磁阀6配合完全关闭气缸3的出气通道，防止气缸3内压力泄露而导致气缸3内活塞上升。在本实施例中，气源输出口切换阀18为五位三通电磁阀，还包括第四气口R和第五气口S，该第四气口R和第五气口S分别装设有消音器16。第四气口R和第五气口S都用于在气缸3排气时，供气体排出到外部环境中。通过两个消音器16，可以消除给气缸3泄气所产生的噪声。
第二电磁阀6和气缸3之间还设置有用于调整气缸3排气速度的第一节流阀，第一电磁阀5和气缸3之间还设置有用于调整气缸3进气速度的第二节流阀。
进一步地，如图3所示，在本实施例中，第三控制单元包括用于关闭或导通密封箱1第一进气通道的第三电磁阀7；空压机4经第三电磁阀7与密封箱1内部连通 ，用于向密封箱1内部充入气体；通过这一技术方案，使得空压机4不仅用于给气缸3充气，还用于给密封箱1内部充气的目的。
进一步地，第二控制单元包括用于关闭或导通密封箱1抽真空通道的第四电磁阀8；第一真空泵2经第四电磁阀8与密封箱1内部连通。所述维修设备还包括用于关闭或导通密封箱1第二进气通道、用于平衡密封箱1内外气压的平衡电磁阀19。优选地，维修设备还包括用于测量密封箱1内部气压的第二气压表9；在本实施例中，第二气压表为带模拟量输出的数字压力表，除了测量显示密封箱内部负压以外，还起到控制密封箱充压压力范围的作用，如可以给数字压力表上设置压力上限和压力下限，当密封箱内部压力达到压力上限时，数字压力表就给处理器相应的信号，处理器就控制使密封箱内部排气；当密封箱内部压力低于压力下限时，数字压力表也会给处理器相应的信号，处理器就控制向密封箱内部充气。密封箱1第一进气通道、密封箱1第二进气通道、密封箱1抽真空通道、第二气压表9以及密封箱1内部通过五通接头15互相连通。通过第二气压表9，可以检测密封箱1内部的抽真空状况，从而在更适当地时候驱动气缸3，实现手机屏工件的贴合过程。
为了完成碎裂的玻璃盖板与液晶显示屏的分离过程，如图1和图3所示，维修设备还包括设置在密封箱1顶部的吸附装置，在本实施例中，吸附装置设置在外壳顶部。该吸附装置包括具有多个孔洞且该多个孔洞在下表面彼此连通的吸附板11、分别嵌设在吸附板11内的电加热元件和温度传感器、与吸附板11下表面连接的底板、与吸附板11下表面和底板所围成的腔体连通的真空泵接头以及与真空泵接头连通的的第二真空泵12；该第二真空泵12用于将玻璃盖板碎裂的手机屏工件吸附固定在吸附板11上。在其他实施例中，第二真空泵12也可以是外接于密封箱1。在这里，吸附板通过内置的电加热元件发热。
如图4所示，在本实施例中，总控单元为分别与第四电磁阀8、第三电磁阀7、第二气压表9、热压板14、第一电磁阀5、第二电磁阀6以及平衡电磁阀19电性连接的处理器13；当第一真空泵2与密封箱1连接时，处理器13用于控制第三电磁阀7关闭密封箱1第一进气通道，控制第四电磁阀8导通密封箱1抽真空通道，并控制平衡电磁阀19关闭密封箱1第二进气通道；
当第二气压表9检测到密封箱1内部被抽真空至真空度小于2kPa(具体来说，第二气压表9检测到密封箱1内部被抽真空至真空度达到0kPa，或者检测到自密封箱1内部开始被抽真空后的50s内，密封箱1内部被抽真空至真空度小于2kPa)时，第二气压表9用于向处理器13发送处理信号，处理器13用于接收到该处理信号后，控制第四电磁阀8关闭密封箱1抽真空通道，然后控制热压板14发热至45℃～60℃(在这里，该设置温度是根据手机屏工件的尺寸大小、环境温度、贴合时间这些相关因素确定的)；然后，处理器用于控制第一电磁阀5导通气缸3的进气通道(在本实施例中，处理器13还控制气源输出口切换阀18，使第一气口(P)和第二气口(A)之间的第一管路)，并控制第二电磁阀6关闭气缸3的出气通道，从而便于空压机4向气缸3内部充入气体，以使气缸3活塞驱动热压板14给手机屏工件施加0.2MPa～0.5MPa的压力；接着，处理器13用于控制第一电磁阀5关闭气缸3的进气通道，并控制第二电磁阀6导通气缸3的出气通道以将气缸3活塞上升，从而使热压板14与手机屏工件分离；
接着，处理器13用于控制第二电磁阀6关闭气缸3的出气通道，并控制第三电磁阀7导通密封箱1第一进气通道，同时，平衡电磁阀19关闭密封箱1第二进气通道；以便空压机4向密封箱1内部充入气体，使密封箱1内部的压强处于0.3MPa～0.6MPa之间；
处理器13还用于控制第三电磁阀7关闭密封箱1第一进气通道，并控制热压板14给密封箱1内部加热，使密封箱1内部温度达到40℃～55℃，并保持3min～15min；最后，处理器还用于控制平衡电磁阀19导通密封箱1出气通道，以平衡密封箱1内外气压。在这里，密封箱1内部加热的过程和向密封箱1内部充入气体的过程的顺序并不作要求，即密封箱1内部加热的过程可以在前，而向密封箱1内部充入气体的过程在后；也可以密封箱1内部加热的过程在后，而向密封箱1内部充入气体的过程在前。
优选地，在本实施例中，如图4所示，处理器13还与控制面板17电性连接，如图1所示，控制面板17用于向处理器13输入包含有对手机屏工件处理的工艺参数的控制信号，以使处理器13分别控制第四电磁阀8、第三电磁阀7、第二气压表9、热压板14、第一电磁阀5、第二电磁阀6以及平衡电磁阀19完成对手机屏工件 的处理。在这里，密封箱顶部的吸附装置的电热和抽真空过程也可以受处理器13的控制，也可以单独用物理按钮控制。
进一步地，本发明提出了基于上述维修设备的手机屏工件的维修方法，包括以下步骤：
步骤S0、将碎裂的玻璃盖板从液晶显示屏上移除；
在本实施例中，该步骤S0包括以下子步骤：
子步骤S01、将具有孔洞的吸附板11加热到65℃～90℃；
子步骤S02、将玻璃盖板碎裂的手机屏工件放在吸附板11上；并且碎裂的玻璃盖板朝向吸附板11，并覆盖孔洞顶部开口；在本实施例中，手机屏和吸附板11之间垫设有带孔硅胶垫，该硅胶垫用于实现手机屏和吸附板11之间的密封和防滑；硅胶垫的孔洞的中心位置与吸附板11的孔洞对齐，这样，不影响抽真空过程的通畅性。
子步骤S03、通过孔洞底部开口给孔洞抽真空以使孔洞内部产生负压，使碎裂的玻璃盖板吸附在吸附板11上；该抽真空过程持续4min-14min。
子步骤S04、通过直径为0.06mm～0.18mm的金属丝沿碎裂的玻璃盖板与液晶显示屏的接触面进行切割，将碎裂的玻璃盖板与液晶显示屏之间的粘结层破坏，从而将碎裂的玻璃盖板从液晶显示屏上移除。在本实施例中，金属丝为金刚钼丝。可以理解，金刚钼丝为一示例，任何强度足够大的金属丝都可以采用。
在这里，当玻璃盖板碎裂的手机屏幕放置在发热的吸附板11上时，粘结层软化，从而有利于切割。而当通过孔洞底部开口给孔洞抽真空时，碎裂的玻璃盖板就在大气压的作用下吸附在吸附板11上。此时，采用金属丝沿碎裂的玻璃盖板与液晶显示屏的接触面进行切割，即可将碎裂的玻璃盖板与液晶显示屏分开。
在其他实施例中，还可以采用微波加热的方式处理玻璃盖板碎裂的手机屏幕，同样可以降低了玻璃盖板与液晶显示屏之间的粘结强度。
有时候，玻璃盖板过于碎裂，碎裂的玻璃盖板无法密封覆盖孔洞的顶部开口，当给孔洞抽真空时，无法将玻璃盖板吸附在吸附板11上。针对这种情况，在子步骤S02之前，还包括：采用胶带贴满碎裂的玻璃盖板。这样，在通过孔洞底部开口给孔洞抽真空时，孔洞不会漏气，玻璃盖板能够牢固地吸附在吸附板11上 。
步骤S1、将保持上下设置的新玻璃盖板和液晶显示屏一起放入密封箱1中(具体来说，是将涂覆有OCA光学胶的新玻璃盖板与液晶显示屏用模具定位以保持上下位置设置，可以理解，OCA光学胶也可以涂覆在液晶显示屏上，此外，若液晶显示屏上没有偏光片或者偏光片损坏，需要提前在液晶显示屏上安装好偏光片)；将密封箱1内部抽真空，再驱动热压板给该新玻璃盖板加热并施加压力，使该新玻璃盖板贴合在所述液晶显示屏上，从而完成新玻璃盖板和液晶显示屏之间的贴合，即手机屏工件的贴合；其中，给新玻璃盖板加热的加热温度为45℃～60℃，给新玻璃盖板加压的加压压力为0.2MPa～0.5MPa，密封箱1内部被抽真空至真空度小于2kPa；
在本步骤中，新玻璃盖板是通过OCA光学胶粘贴在液晶显示屏上。之后，在加热加压的工艺条件下，新玻璃盖板和液晶显示屏能够牢固地贴合在一起。本步骤完成后，新玻璃盖板和液晶显示屏之间有可能会有小气泡，而若工艺条件控制精准，新玻璃盖板和液晶显示屏之间也可能无气泡。
步骤S2、给密封箱1内部充入气体，使密封箱1内部的压强处于0.3MPa～0.6MPa之间；同时，给密封箱1内部加热，使密封箱1内部温度为40℃～55℃，并保持3min～15min。
步骤S2是本发明的具有创造性的重要发明点。优选地，在本实施例中，给密封箱1内部充入气体，使密封箱1内部的压强处于0.3MPa～0.6MPa之间；在这里，当密封箱1内部的压强为0.4MPa时，手机屏工件的除泡效果和效率比较均衡。通过在高压并且较热的环境下，若新玻璃盖板和液晶显示屏之间存在气泡，则该气泡能够在密封箱内部的气压作用下被挤压，并分散至OCA胶中，至肉眼无法分辨，从而实现除泡效果。
在步骤S2之后，还包括：将密封箱1内部的高压气体释放掉。
工业实用性
本发明的手机屏维修设备通过在真空条件下，将新的玻璃盖板热压于原有液晶显示屏上，同时，在高气压和稍高温度环境下，使新的玻璃盖板和原有液晶显示屏之间的气泡分散于OCA光学胶中，至肉眼无法分辨，从而达到除泡效果。本 发明的维修设备除泡效果佳，实用性强。

Claims (20)

  1. 一种手机屏维修设备，包括密封箱(1)以及设在密封箱(1)上的密封门装置，还包括设置在密封箱(1)内的热压板(14)以及通过活塞可使所述热压板(14)在密封箱(1)内对手机屏工件进行压合的气缸(3)，其特征在于，所述维修设备还包括用于在压合时将空压机(4)与气缸(3)连通并供气的第一控制单元；还包括用于在压合时将第一真空泵(2)接入密封箱(1)以便将密封箱(1)内部抽真空的第二控制单元；还包括用于在给手机屏工件除泡时将空压机(4)与密封箱(1)连通以便给所述密封箱(1)内加气压的第三控制单元；所述维修设备还包括分别连接并控制第一控制单元、第二控制单元和第三控制单元的总控单元。
  2. 根据权利要求1所述的手机屏维修设备，其特征在于，第一控制单元包括设置在空压机(4)与气缸(3)的进气口之间的第一电磁阀(5)；还包括设置在空压机(4)与气缸(3)的出气口之间的第二电磁阀(6)；第一控制单元还包括气源输出口切换阀(18)，该气源输出口切换阀(18)的第一气口(P)与空压机(4)连通，该气源输出口切换阀(18)的第二气口(A)与第二电磁阀(6)的出口连通，该气源输出口切换阀(18)的第三气口(B)与第一电磁阀(5)的入口连通；气源输出口切换阀(18)用于实现第一气口(P)和第二气口(A)之间的第一管路以及第一气口(P)和第三气口(B)之间的第二管路的切换。
  3. 根据权利要求2所述的手机屏维修设备，其特征在于，还包括用于监测气缸(3)内部气压的第一气压表(10)，所述第一气压表(10)与所述第一电磁阀(5)入口、所述第二电磁阀(6)出口、所述气源输出口切换阀(18)第一气口(P)连通。
  4. 根据权利要求3所述的手机屏维修设备，其特征在于，第三控制单元包括用于关闭或导通密封箱(1)第一进气通道以控制所述空压机(4)是否连通到所述密封箱(1)内的第三电磁阀(7)；第二 控制单元包括用于关闭或导通密封箱(1)抽真空通道以控制所述第一真空泵(2)是否连通到所述密封箱(1)内的第四电磁阀(8)。
  5. 根据权利要求4所述的手机屏维修设备，其特征在于，还包括用于关闭或导通密封箱(1)第二进气通道、用于平衡密封箱(1)内与外部环境之间气压的平衡电磁阀(19)。
  6. 根据权利要求5所述的手机屏维修设备，其特征在于，还包括用于测量密封箱(1)内部气压的第二气压表(9)；密封箱(1)第一进气通道、密封箱(1)第二进气通道、密封箱(1)抽真空通道、第二气压表(9)以及密封箱(1)内部通过五通接头(15)互相连通。
  7. 根据权利要求6所述的手机屏维修设备，其特征在于，总控单元包括分别与第四电磁阀(8)、第三电磁阀(7)、第二气压表(9)、热压板(14)、第一电磁阀(5)、第二电磁阀(6)以及平衡电磁阀(19)电性连接的处理器(13)。
  8. 根据权利要求7所述的手机屏维修设备，其特征在于，压合时，所述总控单元控制热压板(14)发热至45℃～60℃；控制气缸(3)驱动热压板(14)给手机屏工件施加0.2MPa～0.5MPa的压力；以及控制第一真空泵(2)将密封箱(1)内部真空度抽真空至小于2kPa。
  9. 根据权利要求7所述的手机屏维修设备，其特征在于，除泡时，所述总控单元控制空压机(4)使密封箱(1)内部的压强处于0.3MPa～0.6MPa之间；以及控制热压板(14)给密封箱(1)内部加热，使密封箱(1)内部温度达到40℃～55℃，并保持3min～15min。
  10. 根据权利要求1-9任意一项所述的手机屏维修设备，其特征在于，还包括设置在密封箱(1)顶部的吸附装置，该吸附装置包括其一个面上有多个孔洞且该多个孔洞在其另一个面彼此连通的吸附板 (11)、分别嵌设在吸附板(11)内的电加热元件和温度传感器、与吸附板(11)所述另一个面连接的底板、与吸附板(11)所述另一个面和底板所围成的腔体连通的真空泵接头以及与真空泵接头连通的的第二真空泵(12)；维修设备还包括外壳，第二真空泵(12)设置在所述外壳内。
  11. 根据权利要求10所述手机屏维修设备，其特征在于，通过所述吸附装置辅助手机屏工件切割分离时，控制所述电加热元件达到65℃～90℃，控制所述第二真空泵(12)在所述孔洞持续产生负压4min-14min。
  12. 根据权利要求7-9中任何一项所述手机屏维修设备，其特征在于，当密封箱(1)接入第一真空泵(2)时，处理器(13)控制第三电磁阀(7)关闭、第四电磁阀(8)导通，并控制平衡电磁阀(19)关闭密封箱(1)第二进气通道；
    当第二气压表(9)检测到密封箱(1)内部被抽真空至真空度小于2kPa时，第二气压表(9)用于向处理器(13)发送处理信号，处理器(13)控制第四电磁阀(8)关闭，控制热压板(14)发热至45℃～60℃；
    处理器控制第一电磁阀(5)导通、第二电磁阀(6)关闭，从而便于空压机(4)向气缸(3)内部充入气体，以使气缸(3)驱动热压板(14)给手机屏工件施加0.2MPa～0.5MPa的压力；
    控制第一电磁阀(5)关闭、第二电磁阀(6)导通以将气缸(3)内部的气体释放掉，从而使热压板(14)与手机屏工件分离；
    控制第二电磁阀(6)关闭、第三电磁阀(7)导通，以便空压机(4)向密封箱(1)内部充入气体，使密封箱(1)内部的压强处于0.3MPa～0.6MPa之间；
    处理器(13)控制第三电磁阀(7)关闭，控制热压板(14)给密封箱(1)内部加热，使密封箱(1)内部温度达到40℃～55℃，并保持3min～15min；
    控制平衡电磁阀(19)导通密封箱(1)出气通道，以平衡密封箱(1)内外气压。
  13. 一种手机屏工件的维修方法，其特征在于，包括以下步骤；
    S1、将手机屏工件放入密封箱(1)内并关闭密封门装置；
    S2、在密封箱(1)空间真空或负压状态下对手机屏工件加热施压，进行压合操作；
    S3、经过一段时间，所述手机屏工件压合完成；
    S4、向密封箱(1)内充气加压，并给密封箱(1)内气体加热一段时间；
    S5、结束去泡操作，开启密封箱(1)，使密封箱(1)内外气压平衡；
    S6、打开密封门装置，取出经过压合并去泡操作的手机屏工件。
  14. 根据权利要求13所述的维修方法，其特征在于，所述步骤S1中，给所述手机屏工件加热的温度为45℃～60℃，通过活塞给所述手机屏工件加压的压力为0.2MPa～0.5MPa，通过第一真空泵(2)将所述密封箱(1)内抽真空至真空度小于2kPa。
  15. 根据权利要求13所述的维修方法，其特征在于，所述步骤S4中，给所述密封箱(1)内部充入气体，使密封箱(1)内部空间压强处于0.3MPa～0.6MPa之间；同时通过热压板给所述密封箱(1)内部空间加热，使密封箱(1)内部温度为40℃～55℃，并保持3min～15min。
  16. 根据权利要求13所述的维修方法，其特征在于，在S1步骤之前还包括将碎裂的玻璃盖板从触摸屏上移除，切割分离玻璃步骤如下：
    S01、将具有孔洞的吸附板(11)加热到65℃～75℃；
    S02、将玻璃盖板碎裂的手机屏工件放在吸附板(11)上；并且碎裂的玻璃盖板朝向吸附板(11)，并覆盖孔洞顶部开口；
    S03、通过孔洞底部开口给孔洞抽真空，使碎裂的玻璃盖板吸附在 吸附板(11)上；
    S04、通过直径为0.06mm～0.18mm的金属丝沿碎裂的玻璃盖板与液晶显示屏的接触面进行切割，从而将碎裂的玻璃盖板从液晶显示屏上移除。
  17. 根据权利要求13所述的维修方法，其特征在于，在步骤S02之前，还包括：采用胶带贴满碎裂的玻璃盖板的步骤。
  18. 根据权利要求13所述的维修方法，其特征在于，所述步骤S2包括以下步骤：
    当第一真空泵(2)与密封箱(1)连接时，控制第三电磁阀(7)关闭密封箱(1)第一进气通道，控制第四电磁阀(8)导通密封箱(1)抽真空通道，并控制平衡电磁阀(19)关闭密封箱(1)第二进气通道；
    当第二气压表(9)检测到密封箱(1)内部被抽真空至真空度小于2kPa时，第二气压表(9)向处理器(13)发送处理信号，处理器(13)接收到该处理信号后，控制第四电磁阀(8)关闭密封箱(1)抽真空通道，然后控制热压板(14)发热至45℃～60℃；
    控制第一电磁阀(5)导通气缸(3)的进气通道，并控制第二电磁阀(6)关闭气缸(3)的出气通道，从而便于空压机(4)向气缸(3)内部充入气体，以使气缸(3)驱动热压板(14)给手机屏工件施加0.2MPa～0.5MPa的压力；
    控制第一电磁阀(5)关闭气缸(3)的进气通道，并控制第二电磁阀(6)导通气缸(3)的出气通道以将气缸(3)内部的气体释放掉，从而使热压板(14)与手机屏工件分离。
  19. 根据权利要求13所述的维修方法，其特征在于，步骤S4包括以下步骤：
    控制第二电磁阀(6)关闭气缸(3)的出气通道，并控制第三电磁阀(7)导通密封箱(1)第一进气通道，以便空压机(4)向密封箱(1)内部充入气体，使密封箱(1)内部的压强处于0.3MPa ～0.6MPa之间；
    控制第三电磁阀(7)关闭密封箱(1)第一进气通道，并控制热压板(14)给密封箱(1)内部加热，使密封箱(1)内部温度达到40℃～55℃，
    保持3min～15min。
  20. 根据权利要求13所述的维修方法，其特征在于，在密封箱(1)与外部环境之间直接设置有受平衡电磁阀(19)控制的第二进气通道，所述步骤S5是通过控制平衡电磁阀(19)导通第二进气通道来实。
PCT/CN2016/087906 2016-06-30 2016-06-30 手机屏维修设备及方法 WO2018000335A1 (zh)

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