A cavity filling device

Abstract

The utility model belongs to the field of display screen production, concretely relates to a cavity filling device, including a plurality of fixed in cavity inner side wall for filling cavity space's filling block, and filling block includes: the block body of shape, the opening of block body is equipped with the stepped surface, with the cover body of corresponding shape and pressing on the stepped surface, and, the frame of covering and pressing in the edge of cover body and with the fixed block body, the frame is fixed with block body and makes filling block be the sealed body. The utility model provides a cavity filling device, fills cavity space through filling block, and then reduces the time of vacuumizing and aerating in cavity. The utility model discloses a special filling block structure, adopts hollow sealing structure, can reduce the weight of filling block on one hand, still has stronger anti-air pressure ability. The utility model adopts transparent cover body and sets up the fragment in the block body, can judge whether the filling block leaks when observing whether the fragment moves during vacuumizing.

Description

Technical Field

[0001] This utility model belongs to the field of display screen manufacturing, and specifically relates to a cavity filling device. Background Technology

[0002] In the mass production process of displays, vacuum chambers are key equipment to ensure the precision of core processes and product performance, and their application spans multiple critical stages.

[0003] For LCDs, the vacuum chamber is used for the sputtering deposition of ITO transparent conductive film and semiconductor thin film, as well as the liquid crystal filling after the upper and lower glass substrates are bonded together. Only in a vacuum environment can impurities be avoided during film deposition and bubbles be prevented during liquid crystal filling, thus ensuring the uniformity of LCD display.

[0004] For OLEDs, the evaporation of the organic light-emitting layer and the metal cathode must be carried out in a high vacuum environment. At the same time, before encapsulation, the moisture and residual gas on the substrate surface must be removed through a vacuum chamber.

[0005] For Mini / MicroLED, the vacuum chamber is used for vacuum pick-up, transfer, and packaging of microchips. The vacuum environment can avoid poor contact caused by air bubbles during soldering, while ensuring the positioning accuracy of microchip transfer and packaging.

[0006] The operation of existing vacuum chambers requires following a cyclical process of vacuuming, process execution, and vacuum breaking. The core problem with existing technology is that the vacuuming and vacuum breaking processes are time-consuming, severely impacting production efficiency.

[0007] Currently, the industry mainly adopts two types of improvement methods to alleviate the problem of time-consuming gas injection and filling, but both have obvious limitations.

[0008] One approach is a multi-chamber parallel design, which increases the number of vacuum chambers so that while some chambers are performing gas filling and evacuation operations, other chambers are simultaneously carrying out core processes, trading space for time. However, this solution requires a significant increase in equipment investment and is limited by practical conditions such as factory space and production line layout, making it unsuitable for all production scenarios.

[0009] Another approach is to upgrade the vacuum pump unit by using a vacuum pump with a higher pumping speed to shorten the vacuuming time. However, there is a physical limit to the increase in the pumping speed of a vacuum pump, which can only shorten the time to a certain extent. Moreover, the energy consumption of a high-speed vacuum pump increases significantly, and it cannot solve the time-consuming problem of the gas filling stage. Therefore, it cannot fundamentally break through the bottleneck of pumping and filling efficiency. Utility Model Content

[0010] The cavity filling device provided by this utility model can effectively solve the problems in the background art.

[0011] This utility model provides a cavity filling device, comprising a plurality of filling blocks fixed on the inner side wall of a cavity for filling the cavity space, the filling blocks comprising:

[0012] A box-shaped block with stepped surfaces at the opening;

[0013] A cover that corresponds to the shape of the stepped surface and presses onto the stepped surface;

[0014] In addition, a frame is placed on and pressed against the edge of the cover and fixed to the block, and the frame is fixed to the block to make the filling block a sealed body.

[0015] As a further optimization of this utility model, the filling block is a long cube shape.

[0016] As a further optimization of this utility model, the inner wall of the cavity is provided with two vertically parallel bottom plates; the two ends of the filling block are fixed to the two bottom plates by bolts respectively, and several filling blocks are arranged in parallel arrays along the vertical direction.

[0017] As a further optimization of this utility model, the cover is transparent and the block contains fragments.

[0018] As a further optimization of this utility model, the cover is provided with protrusions that correspond to the shape and height of the inner frame of the border.

[0019] As a further optimization of this utility model, the outer frame of the border corresponds to the shape of the block so that the border can completely overlap with the opening surface of the block.

[0020] As a further optimization of this utility model, the frame, cover and block are provided with corresponding first mounting holes, and bolts are inserted into the first mounting holes to fix the frame, cover and block.

[0021] As a further optimization of this utility model, the frame and the cover are provided with corresponding second mounting holes, and the bolts pass through the second mounting holes to fix the filler block to the base plate.

[0022] As a further optimization of this utility model, sealing gaskets are provided on the contact surfaces of the cover, the block, and the frame.

[0023] As a further optimization of this utility model, the contact surfaces of the cover with the block and the frame are provided with sealant.

[0024] This invention provides a cavity filling device that uses filling blocks to fill cavity spaces, thereby reducing the time required for vacuuming and filling the cavity. The unique filling block structure of this invention employs a hollow, sealed structure, which reduces the weight of the filling block and provides strong resistance to air pressure. This invention uses a transparent cover and incorporates fragments within the block; during vacuuming, the movement of these fragments can be observed to determine if the filling block is leaking. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the installation structure in this embodiment;

[0026] Figure 2 yes Figure 1 Schematic diagram of the filling block structure;

[0027] Figure 3 yes Figure 2 Schematic diagram of the cross-section structure;

[0028] Figure 4 yes Figure 2 Schematic diagram of the medium block structure;

[0029] Figure 5 yes Figure 2 Schematic diagram of the middle cover structure;

[0030] Figure 6 yes Figure 2 Schematic diagram of the middle frame structure;

[0031] Among them, there are filling block 1, block body 1a, stepped surface 1a1, cover body 1b, protrusion 1b1, frame 1c, bottom plate 2, inner side wall of cavity 3, first mounting hole 4, and second mounting hole 5. Detailed Implementation

[0032] In this embodiment, the cavity space is filled with filling block 1 to reduce the space inside the cavity, thereby reducing the time required for vacuuming and filling the cavity.

[0033] Specifically, several sets of filling blocks 1 are arranged on the inner wall 3 of the cavity. Each set of filling blocks 1 is provided with two vertically parallel base plates 2. The two ends of the filling blocks 1 are fixed to the two base plates 2 by bolts. Several filling blocks 1 are arranged in parallel vertical array to cover the base plates 2. In this embodiment, four sets of filling blocks 1 are provided on the inner wall 3 of the cavity.

[0034] If a solid filler block 1 is used, it will inevitably lead to an increase in the weight of the filler block 1, which will require more force and be more laborious when installing the filler block 1. Therefore, this embodiment uses a hollow filler block 1.

[0035] In this embodiment, the filling block 1 includes a block body 1a, a cover body 1b, and a border 1c.

[0036] The block 1a is specifically in the shape of a long cube, but in other embodiments it can also be in the shape of a pentagonal prism or a hexagonal prism.

[0037] In this embodiment, the block 1a is box-shaped, and a first-level stepped surface 1a1 is provided at the opening of the block 1a.

[0038] The shape of the cover 1b corresponds to the shape of the stepped surface 1a1, and the cover 1b is placed exactly on the stepped surface 1a1.

[0039] The frame 1c is a rectangular frame structure. The frame 1c covers the edge of the cover 1b and completely covers the edge of the cover 1b. The frame 1c is fixed to the shell.

[0040] In this embodiment, the outer frame of the border 1c corresponds to the shape of the opening surface of the block 1a, so that the border 1c can completely overlap with the opening surface of the block 1a after it is placed on the block 1a, thereby making the entire filling block 1 a regular cubic structure.

[0041] In this embodiment, the cover 1b is also provided with a protrusion 1b1 that corresponds to the shape and height of the inner frame of the frame 1c, that is, the frame 1c is exactly fitted on the outer ring of the protrusion 1b1. This structure also makes the entire filling block 1 a regular cubic structure.

[0042] In this embodiment, the frame 1c, the cover 1b and the block 1a are provided with corresponding first mounting holes 4, wherein the first mounting hole 4 on the block 1a is a threaded hole, and the first mounting hole 4 on the frame 1c and the cover 1b is a through hole. The bolt is inserted into the first mounting hole 4 to fix the frame 1c, the cover 1b and the block 1a.

[0043] In this embodiment, the frame 1c and the cover 1b are provided with corresponding second mounting holes 5, and the bolts pass through the second mounting holes 5 to fix the filler block 1 to the base plate 2.

[0044] In this embodiment, the frame 1c is fixed to the block 1a, making the filling block 1 a sealing body. To further improve the sealing effect, sealant is provided on the contact surfaces of the cover 1b with the block 1a and the frame 1c. In other embodiments, sealing gaskets may also be provided on the contact surfaces of the cover 1b with the block 1a and the frame 1c.

[0045] When the cavity is evacuated, the pressure inside the filling block 1 is greater than the pressure outside. If a box-shaped block and a cover are simply set up and fixed at the opening of the block, the cover will easily bulge and cause air leakage unless it is made thick enough. In this case, the filling block 1 will not achieve the filling effect it should.

[0046] This embodiment of the structure can increase the firmness of the cover 1b fixed to the block 1a. In this structure, the cover 1b can also be made of transparent plastic, and some fragments, such as shredded paper, can be placed inside the block 1a. When vacuuming, the presence or absence of air leakage in the filling block 1 can be determined by observing whether the shredded paper moves.

[0047] It should be noted that the descriptions of directions such as up, down, left, right, front, back, top, bottom, tail, horizontal, and vertical in this application are all based on the accompanying drawings and are only used to more clearly express the technical solution, and do not indicate any limitation on the scope of protection.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A cavity filling device, characterized in that, Includes several filling blocks fixed to the inner wall of the cavity for filling the cavity space, the filling blocks including: A box-shaped block with stepped surfaces at the opening; A cover that corresponds to the shape of the stepped surface and presses onto the stepped surface; In addition, a frame is placed on and pressed against the edge of the cover and fixed to the block, and the frame is fixed to the block to make the filling block a sealed body.

2. The cavity filling device according to claim 1, characterized in that, The filling block is a long, rectangular cube.

3. The cavity filling device according to claim 2, characterized in that, The inner wall of the cavity is provided with two vertically parallel base plates; the two ends of the filling blocks are fixed to the two base plates by bolts respectively, and several filling blocks are arranged in parallel arrays along the vertical direction.

4. The cavity filling device according to claim 1, characterized in that, The cover is transparent, and there are fragments inside the block.

5. A cavity filling device according to claim 1, characterized in that, The cover has protrusions that correspond to the shape and height of the inner frame of the border.

6. The cavity filling device according to claim 1, characterized in that, The border and the shape of the block correspond to each other so that the border can completely overlap with the opening surface of the block.

7. A cavity filling device according to claim 1, characterized in that, The frame, cover, and block are provided with corresponding first mounting holes, and bolts are inserted into the first mounting holes to fix the frame, cover, and block.

8. A cavity filling device according to claim 3, characterized in that, The frame and cover are provided with corresponding second mounting holes, and bolts are passed through the second mounting holes to fix the filler block to the base plate.

9. A cavity filling device according to claim 1, characterized in that, Sealing gaskets are provided on the contact surfaces between the cover and the block and the frame.

10. A cavity filling device according to claim 1, characterized in that, The contact surfaces between the cover and the block and frame are covered with sealant.

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