Packaging device of LED display screen

Abstract

The utility model discloses a kind of encapsulation devices of LED display screen, it is related to display screen processing technical field, comprising: mounting bracket;Upper hot-pressing component, fixed in the mounting bracket, LED display screen to be encapsulated is set in the upper hot-pressing component;Lower mould, fixed in the mounting bracket, the lower mould is fixed below the upper hot-pressing component, release film is laid on the lower mould;Material pressing component, movably set above the release film;The material pressing component is used to compress release film on the lower mould;Pressure detection piece, set in the material pressing component side close to the upper hot-pressing component, the pressure detection piece is used to detect the lower pressure of the upper hot-pressing component;Controller is connected with the upper hot-pressing component, material pressing component and pressure detection piece respectively.By setting pressure detection piece to detect lower pressure, guarantee that lower pressure does not press release film, ensure the use quality of release film when hot-pressing.

Description

Technical Field

[0001] This utility model relates to the field of display screen processing technology, and in particular to a packaging device for an LED display screen. Background Technology

[0002] LED display technology is widely used in the display field. An LED display screen is made by assembling many tiny LEDs on a corresponding substrate. In order to ensure that the LEDs are not easily damaged, an encapsulation process is required to completely encapsulate the LEDs on the substrate in transparent adhesive. In the LED display encapsulation process, a release film is usually placed on a mold, and then adhesive is applied to the release film for hot pressing and sealing. Because the encapsulation pressure of the hot pressing equipment is high, the release film will be damaged after each hot pressing, and the release film needs to be re-laid, which increases the manufacturing cost and reduces the encapsulation efficiency. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides an LED display packaging device that can increase the number of times the release film can be used during the packaging process, reduce production costs, and improve production efficiency.

[0004] To solve the above-mentioned technical problems, this utility model provides an LED display packaging device, comprising: a mounting frame; an upper hot-pressing assembly fixed to the mounting frame, wherein the LED display to be packaged is disposed within the upper hot-pressing assembly; a lower mold fixed to the mounting frame, the lower mold being fixed below the upper hot-pressing assembly, and a release film being laid flat on the lower mold; a pressing assembly movably disposed above the release film; the pressing assembly being used to press the release film on the lower mold; a pressure detection element disposed on the side of the pressing assembly near the upper hot-pressing assembly, the pressure detection element being used to detect the downward pressure of the upper hot-pressing assembly; and a controller connected to the upper hot-pressing assembly, the pressing assembly, and the pressure detection element respectively.

[0005] As an improvement to the above solution, the packaging device further includes a purging assembly, which is fixed to the mounting bracket.

[0006] As an improvement to the above solution, the purging assembly includes at least one plasma fan, which is fixed to the mounting bracket and has its outlet facing the lower mold.

[0007] As an improvement to the above solution, the pressing assembly includes: a lifting unit fixed to the mounting frame, the power output end of the lifting unit extending above the lower mold; a pressing plate connected to the power output end of the lifting unit; the pressing plate has a mounting groove on the side near the upper hot pressing assembly, and the pressure detection element is fixed in the mounting groove.

[0008] As an improvement to the above solution, the pressure detection element is a pressure sensor, and the sensing part of the pressure sensor extends above the mounting groove.

[0009] As an improvement to the above solution, the packaging device further includes a visual inspection component, which is fixed to the mounting bracket and is used to detect whether the release film is damaged.

[0010] As an improvement to the above solution, the packaging device further includes a feeding assembly, which is fixed to the mounting frame, and the release film is mounted on the feeding assembly. The feeding assembly is used to lay the release film flat onto the lower mold.

[0011] As an improvement to the above solution, the feeding assembly includes: two pneumatic rollers, which are rotatably disposed on both sides of the lower mold; a release film roll is fixed on one of the pneumatic rollers, and the release film on the release film roll is connected to the other pneumatic roller through the upper end face of the lower mold.

[0012] As an improvement to the above solution, the feeding assembly further includes a pressure roller, with at least one pressure roller disposed between each of the pneumatic rollers and the lower mold; the pressure roller is used to press the release film.

[0013] As an improvement to the above solution, the pressure plate further includes: a processing hole, through which the LED display screen on the upper hot pressing assembly enters for hot pressing and sealing; and a positioning hole, used to assist the upper hot pressing assembly in positioning.

[0014] The beneficial effects of implementing this utility model are as follows:

[0015] This utility model discloses an LED display packaging device. By setting a pressure detection element on the pressing assembly, when the upper hot pressing assembly presses down, it first contacts the pressure detection element. The pressure detection element transmits the detected pressing pressure data to the controller. If the controller detects that the pressing pressure exceeds a specified range, it controls the upper hot pressing assembly to stop pressing down, ensuring that the pressing pressure does not damage the release film and ensuring the quality of the release film during hot pressing. At the same time, it also reduces the product defect rate caused by release film damage, increases the number of times the release film can be used during the packaging process, reduces production costs, and improves production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the packaging device for an LED display screen in this embodiment;

[0017] Figure 2 This is a partial structural schematic diagram of an LED display packaging device in this embodiment;

[0018] Figure 3This is a schematic diagram of the installation of the pressure detection element in this embodiment.

[0019] The reference numerals in the attached drawings are explained as follows: 100, mounting bracket; 110, first mounting plate; 120, second mounting plate; 200, upper hot press assembly; 300, lower mold; 400, release film; 500, pressing assembly; 510, pressing plate; 511, mounting groove; 512, machining hole; 513, positioning hole; 520, lifting unit; 600, pressure detection component; 700, plasma fan; 800, vision inspection component; 910, pneumatic roller; 920, pressing roller. Detailed Implementation

[0020] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0021] See Figure 1 , Figure 1 This is a schematic diagram of the packaging device for an LED display screen in this embodiment; Figure 2 This is a partial structural schematic diagram of an LED display packaging device in this embodiment. In this embodiment, the packaging device is used to package a Mini LED display. As shown in the figure, the device includes: a mounting frame 100, with a first mounting plate 110 at its upper end and a second mounting plate 120 at its middle; an upper hot-pressing assembly 200, fixed to the first mounting plate 110, with the LED display to be packaged disposed within the upper hot-pressing assembly 200; and a lower mold 300, fixed to the second mounting plate 120, fixed below the upper hot-pressing assembly 200, with the lower mold 300 having an upper... A release film 400 is laid flat; a pressing assembly 500 is movably disposed above the release film 400; the pressing assembly 500 is used to press the release film 400 on the lower mold 300; a pressure detection element 600 is disposed on the side of the pressing assembly 500 near the upper hot pressing assembly 200, and the pressure detection element 600 is used to detect the downward pressure of the upper hot pressing assembly 200; a controller is connected to the upper hot pressing assembly 200, the pressing assembly 500 and the pressure detection element 600 respectively. By setting a pressure detection element 600 on the pressing assembly 500, when the upper hot pressing assembly 200 presses down, the outer edge of the upper hot pressing assembly 200 first contacts the pressure detection element 600. The pressure detection element 600 transmits the detected pressing pressure data to the controller. If the controller detects that the pressing pressure exceeds 120MPa, it controls the upper hot pressing assembly 200 to stop pressing down, ensuring that the pressing pressure will not damage the release film 400, thus ensuring the quality of the release film 400 during hot pressing. At the same time, it also reduces the product defect rate caused by the breakage of the release film 400, increases the number of times the release film 400 can be used during the packaging process, reduces production costs, and improves production efficiency.

[0022] Preferably, the packaging device further includes an adhesive applicator, which is used to automatically apply adhesive to the release film 400, and the adhesive applicator is connected to the controller.

[0023] See Figure 2 Furthermore, in this embodiment, the encapsulation device further includes a purging assembly, which is fixed to the second mounting plate 120.

[0024] Specifically, the blowing assembly includes a plasma fan 700, which is fixed to the mounting bracket 100, with its outlet facing the lower mold 300. After the hot pressing process is completed, the plasma fan 700 blows through the display screen on the upper hot pressing assembly 200 to remove foreign matter, thus preventing small impurities or fragments from remaining on the substrate; simultaneously, the plasma fan 700 can also clean the release film 400.

[0025] See Figure 2 Furthermore, in this embodiment, the pressing assembly 500 includes: a lifting unit 520 fixed to the second mounting plate 120, the power output end of the lifting unit 520 extending above the lower mold 300; a pressing plate 510 connected to the power output end of the lifting unit 520; the pressing plate 510 has a mounting groove 511 on the side near the upper hot pressing assembly 200, and the pressure detection element 600 is fixed in the mounting groove 511.

[0026] Specifically, the pressure plate 510 further includes: a processing hole 512 through which the LED display screen on the upper hot pressing assembly 200 contacts the adhesive on the release film 400 for hot pressing and sealing; and a positioning hole 513 for assisting the upper hot pressing assembly 200 in positioning. When the release film 400 is located on the lower mold 300, the lifting unit 520 drives the pressure plate 510 to press the release film 400 tightly; the adhesive application robot applies adhesive to the groove formed by the processing hole 512 and the release film 400.

[0027] Preferably, there are four lifting units 520, and the four lifting units 520 are respectively connected to the four corners of the pressure plate 510.

[0028] Preferably, the lifting unit 520 is a drive cylinder.

[0029] See Figure 3 , Figure 3 This is a schematic diagram of the installation of the pressure detection element 600 in this embodiment.

[0030] Furthermore, in this embodiment, the pressure detection element 600 is a pressure sensor, and the sensing part of the pressure sensor extends above the mounting groove 511. The pressure sensor detects the downward pressure of the upper hot-press assembly 200, and the pressure sensor is signal-connected to the controller.

[0031] Furthermore, in this embodiment, the packaging device also includes a visual inspection element 800, which is fixed to the mounting bracket 100 and is used to detect whether the release film 400 is damaged.

[0032] Preferably, the visual inspection device 800 is a visual camera, and the visual camera is connected to the controller.

[0033] See Figure 1 The packaging device further includes a feeding assembly, which is fixed to the mounting frame 100. The release film 400 is mounted on the feeding assembly, and the feeding assembly is used to lay the release film 400 flat onto the lower mold 300.

[0034] Specifically, the feeding assembly includes two pneumatic rollers 910, which are rotatably disposed on both sides of the lower mold 300; a roll of release film 400 is fixed on one of the pneumatic rollers 910, and the release film 400 on the roll of release film 400 is connected to the other pneumatic roller 910 through the upper end face of the lower mold 300.

[0035] Specifically, the feeding assembly further includes pressure rollers 920, with at least one pressure roller 920 disposed between each pneumatic roller 910 and the lower mold 300; the pressure rollers 920 are used to press the release film 400. In this embodiment, two pressure rollers 920 are disposed between each pneumatic roller 910 and the lower mold 300 to ensure the flatness of the release film 400 on the lower mold 300.

[0036] In this embodiment, the packaging method of the packaging device includes the following steps:

[0037] The LED display screen to be packaged is installed on the upper hot press assembly 200. The release film 400 roll is pneumatically fixed on the pneumatic roller 910. The release film 400 on the release film 400 roll passes through the pressure roller 920, the lower mold 300, and the pressure roller 920 is connected to another pneumatic roller 910 in sequence to ensure that the release film 400 is laid flat on the mold.

[0038] The lifting unit 520 drives the pressure plate 510 to press the release film 400;

[0039] The adhesive-applying robot applies adhesive to the groove formed by the processing hole 512 and the release film 400;

[0040] The upper hot-pressing assembly 200 presses down, and the outer edge of the upper hot-pressing assembly first contacts the pressure detection element 600. The pressure detection element 600 transmits the detected downward pressure data to the controller.

[0041] If the controller detects that the downward pressure exceeds 120MPa, it will control the upper hot pressing component 200 to stop the downward pressure.

[0042] If the controller detects that the downward pressure is less than 120MPa, the LED display on the upper hot press assembly 200 passes through the processing hole 512 and contacts the adhesive on the release film 400 to perform hot press sealing on the LED display.

[0043] After the sealing is completed, the upper hot press assembly 200 rises and the display screen on the upper hot press assembly 200 is blown by the plasma fan 700 to remove foreign objects;

[0044] Visual inspection of part 800 begins with inspection of release film part 400:

[0045] If the release film 400 is not damaged, the signal is transmitted to the controller to begin preparations for the next encapsulation.

[0046] If the release film 400 is damaged, a signal is transmitted to the controller, which drives the pneumatic roller 910 to rotate and replace the release film 400 on the lower mold 300.

[0047] After multiple experiments, the encapsulation method described in this embodiment allows each release film to undergo 8 to 10 encapsulation processes, greatly improving the service life of the release film.

[0048] As can be seen from the above, the LED display packaging device of this utility model, by setting a pressure detection element on the pressing component, when the upper hot pressing component presses down, it first contacts the pressure detection element. The pressure detection element transmits the detected pressing pressure data to the controller. If the controller detects that the pressing pressure exceeds 120MPa, it controls the upper hot pressing component to stop pressing. If the controller identifies that the pressing pressure exceeds the specified range, it controls the upper hot pressing component to stop pressing, ensuring that the pressing pressure will not damage the release film and ensuring the quality of the release film during hot pressing. At the same time, it also reduces the product defect rate caused by the release film breakage, increases the number of times the release film can be used during the packaging process, reduces production costs, and improves production efficiency.

[0049] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A packaging device for an LED display screen, characterized in that, include: Mounting rack; An upper hot-pressing assembly is fixed to the mounting bracket, and the LED display screen to be encapsulated is placed inside the upper hot-pressing assembly; The lower mold is fixed to the mounting frame and is fixed below the upper hot press assembly. A release film is laid flat on the lower mold. A pressing assembly is movably disposed above the release film; the pressing assembly is used to press the release film on the lower mold. A pressure detection element is disposed on the side of the pressing assembly near the upper hot pressing assembly, and the pressure detection element is used to detect the downward pressure of the upper hot pressing assembly; The controller is connected to the upper hot pressing assembly, the pressing assembly, and the pressure detection element, respectively.

2. The LED display packaging device according to claim 1, characterized in that, The encapsulation device further includes a purging assembly, which is fixed to the mounting bracket.

3. The LED display packaging device according to claim 2, characterized in that, The purging assembly includes at least one plasma fan, which is fixed to the mounting bracket and has its outlet facing the lower mold.

4. The LED display packaging device according to claim 1, characterized in that, The pressing assembly includes: A lifting unit is fixed to the mounting frame, and the power output end of the lifting unit extends above the lower mold; The pressure plate is connected to the power output end of the lifting unit; the pressure plate is provided with an installation groove on the side near the upper hot pressing assembly, and the pressure detection element is fixed in the installation groove.

5. The LED display packaging device according to claim 4, characterized in that, The pressure detection element is a pressure sensor, and the sensing part of the pressure sensor extends above the mounting groove.

6. The LED display packaging device according to claim 1, characterized in that, The packaging device further includes a visual inspection component, which is fixed to the mounting bracket and is used to detect whether the release film is damaged.

7. The LED display packaging device according to claim 1, characterized in that, The packaging device further includes a feeding assembly, which is fixed to the mounting frame. The release film is mounted on the feeding assembly and is used to lay the release film flat onto the lower mold.

8. The LED display packaging apparatus according to claim 7, characterized in that, The feeding assembly includes: Two pneumatic rollers are rotatably mounted on both sides of the lower mold; a release film roll is fixed on one of the pneumatic rollers, and the release film on the release film roll is connected to the other pneumatic roller through the upper end face of the lower mold.

9. The LED display packaging device according to claim 8, characterized in that, The feeding assembly also includes a pressure roller, with at least one pressure roller disposed between each of the pneumatic rollers and the lower mold; the pressure roller is used to press the release film.

10. The LED display packaging device according to claim 4, characterized in that, The pressure plate also includes: The processing hole allows the LED display screen on the upper hot-pressing assembly to enter the processing hole for hot-pressing and sealing; the positioning hole assists in positioning the upper hot-pressing assembly.

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