RGB laser display device shell and assembling device thereof

Abstract

The invention relates to the technical field of packaging shell production, in particular to an RGB laser display device shell which comprises a base, a plurality of containing cavities are formed in the base, oxygen-free copper is arranged in the containing cavities in a welded mode, the containing cavities are used for brazing the oxygen-free copper, gaps are reserved around the oxygen-free copper, and silver-copper solder is arranged in the gaps in a welded mode. A chip placing cavity is formed in the upper end part of the placing cavity, a kovar piece is welded to the upper end part of the base, a pipe cap is welded to the upper end part of the kovar piece, the kovar piece and the pipe cap are welded to the base through parallel seal welding, and the heat dissipation efficiency of the base is improved through oxygen-free copper; the problems that an existing RGB packaging shell ceramic material is poor in heat dissipation performance and is only suitable for a low-power laser chip, and the existing RGB packaging shell uses glue to adhere a pipe cap and is poor in sealing performance are solved.

Description

Technical Field

[0001] The invention relates to the technical field of packaging shell production, in particular to an RGB laser display device shell and an assembly device thereof. Background Art

[0002] The packaging shell plays a vital role in electronic devices. Its main functions include: physical protection, chemical protection, thermal management, electrical connection, identification and anti-counterfeiting, as well as aesthetics and convenient assembly. A Chinese invention patent with application announcement number CN115775772B discloses an IGBT packaging shell, including an IGBT packaging module, and the IGBT packaging module includes a substrate and a shell; the design of the shrapnel structure makes it easy to disassemble and assemble the shell and the substrate, and can adapt to frequent disassembly and installation operations.

[0003] However, the inventors found that in actual use, the existing RGB package shell ceramic material has poor heat dissipation, which makes it only suitable for low-power laser chips, and the existing RGB package shell uses glue to adhere the tube cap, which has poor sealing performance. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies in the prior art. By welding oxygen-free copper in a placement cavity, the inner side wall of the placement cavity is metallized, the heat dissipation efficiency of the base is improved by oxygen-free copper, a kovar sheet is welded at the upper end of the base, and the kovar sheet and the tube cap are welded to the base by parallel sealing welding, thereby improving the sealing of the RGB laser display device housing, solving the problem that the heat dissipation of the ceramic material of the existing RGB packaging housing is poor, resulting in it being only suitable for low-power laser chips, and the existing RGB packaging housing uses glue to bond the tube cap, resulting in poor sealing.

[0005] In view of the above technical problems, the technical solutions adopted by the present invention are as follows:

[0006] A housing of an RGB laser display device comprises a base, wherein a plurality of placement cavities are provided in the base, oxygen-free copper is welded in the placement cavities, the placement cavities are used for brazing the oxygen-free copper, gaps are left around the oxygen-free copper, the gaps are used for filling silver-copper solder, a chip placement cavity is provided at the upper end of the placement cavity, a kovar sheet is welded at the upper end of the base, a tube cap is welded at the upper end of the kovar sheet, the kovar sheet and the tube cap are welded to the base by parallel sealing welding, and the heat dissipation efficiency of the base is improved by oxygen-free copper.

[0007] As a preference, the tube cap is provided with a plurality of windows, and a plurality of glass window pieces are welded on the windows.

[0008] As a preferred embodiment, the tube cap is made of Kovar metal.

[0009] As a preferred embodiment, the inner side wall of the placement cavity is metallized.

[0010] As a preferred embodiment, the sealing surface of the base is metallized and connected to the inner side wall of the placement cavity through the side surface of the base.

[0011] A device for assembling the shell of the RGB laser display device comprises a workbench, a conveyor belt is arranged on the workbench, a loading rack, a cleaning component, a discharge component a and a discharge component b are arranged on the upper end of the conveyor belt from left to right in sequence, a plurality of partition plates are arranged on the conveyor belt, the base in the loading rack is discharged through the partition plates, the oxygen-free copper is discharged through the discharge component a, and the cleaning component is driven to perform air blowing cleaning on the base, and the silver-copper solder is discharged through the discharge component b.

[0012] As a preferred embodiment, a feeding port for feeding only one base is provided at the lower end of the feeding rack.

[0013] Preferably, the cleaning assembly comprises a support frame arranged on the conveyor belt, an air blowing member arranged on the support frame, and an air cylinder arranged at the front end of the discharge assembly a, and an air pipe is arranged between the air cylinder and the air blowing member.

[0014] As a preferred embodiment, the discharge assembly a includes a cylinder body a and a piston rod a driven by the cylinder body a, a loading frame a is provided on the piston rod a, a pressure rod slidably arranged in the air cylinder is provided at the lower end of the piston rod a, a plurality of placement cavities a corresponding to the placement cavities are opened on the loading frame a, a gate a is slidably arranged at the lower end of the placement cavity a, and electric control switches a are provided on both sides of the lower end of the loading frame a.

[0015] As another preferred embodiment, the discharge assembly b includes a cylinder body b and a piston rod b driven by the cylinder body b, a loading frame b is provided on the piston rod b, a plurality of storage cavities b corresponding to the gaps are opened on the loading frame b, a gate b is slidably provided at the lower end of the storage cavity b, and electric control switches b are provided on both sides of the lower end of the loading frame b.

[0016] Beneficial effects of the present invention:

[0017] 1. In the present invention, oxygen-free copper is welded in the placement cavity, the inner side wall of the placement cavity is metallized, the heat dissipation efficiency of the base is improved by oxygen-free copper, a calender is welded on the upper end of the base, and the calender and the tube cap are welded to the base by parallel sealing welding, thereby improving the sealing of the RGB laser display device housing.

[0018] In summary, the device has the advantages of improving heat dissipation effect and sealing performance, and is particularly suitable for the field of packaging shell production technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of the housing of an RGB laser display device;

[0021] Figure 2 is a schematic diagram of the structure of the base;

[0022] Figure 3 It is a structural schematic diagram of an RGB laser display device housing assembly device;

[0023] Figure 4 It is a structural schematic diagram of the loading rack;

[0024] Figure 5 is a schematic diagram of the structure of the cleaning component;

[0025] Figure 6 It is a structural schematic diagram of the discharge component a;

[0026] Figure 7 It is a structural schematic diagram of the discharge component b;

[0027] Figure 8 This is a working status diagram of the RGB laser display device housing assembly device.

[0028] 1. Base; 2. Oxygen-free copper; 3. Silver-copper solder; 4. Cuttable chip; 5. Pipe cap; 6. Workbench; 7. Loading rack; 8. Cleaning assembly; 9. Discharging assembly a; 10. Discharging assembly b; 11. Placement cavity; 12. Gap; 13. Chip placement cavity; 20. Conveyor belt; 51. Window; 52. Glass window; 71. Feeding port; 81. Support frame; 82. Air blowing part; 83. Air cylinder; 84. Air pipe; 91. Cylinder body a; 92. Piston rod a; 93. Loading frame a; 94. Storage cavity a; 95. Gate a; 96. Electric switch a; 97. Pressure rod; 101. Cylinder body b; 102. Piston rod b; 103. Loading frame b; 104. Storage cavity b; 105. Gate b; 106. Electric switch b; 201. Partition plate. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0030] Embodiment 1

[0031] like Figure 1 to Figure 2As shown, a housing of an RGB laser display device includes a base 1, wherein a plurality of placement cavities 11 are opened in the base 1, wherein oxygen-free copper 2 is welded in the placement cavity 11, wherein the placement cavity 11 is used for brazing the oxygen-free copper 2, wherein a gap 12 is left around the oxygen-free copper 2, wherein silver-copper solder 3 is welded in the gap 12, wherein a chip placement cavity 13 is arranged at the upper end of the placement cavity 11, wherein a kovar sheet 4 is welded at the upper end of the base 1, wherein a tube cap 5 is welded at the upper end of the kovar sheet 4, wherein the kovar sheet 4 and the tube cap 5 are welded to the base 1 by parallel sealing welding, wherein the heat dissipation efficiency of the base 1 is improved by the oxygen-free copper 2.

[0032] It is worth mentioning here that oxygen-free copper 2 is welded in the placement cavity 11, the inner wall of the placement cavity 11 is metallized, the heat dissipation efficiency of the base 1 is improved by the oxygen-free copper 2, and a calender 4 is welded at the upper end of the base 1. The calender 4 and the tube cap 5 are welded to the base 1 by parallel sealing welding, thereby improving the sealing of the RGB laser display device housing.

[0033] like Figure 1 As shown, the pipe cap 5 is provided with a plurality of windows 51 , and a plurality of glass window pieces 52 are welded to the windows 51 .

[0034] The pipe cap 5 is made of varable metal.

[0035] The inner wall of the placement cavity 11 is metallized.

[0036] In this example, the oxygen-free copper 2 is integrally embedded in the placement cavity 11, the inner wall of the placement cavity 11 is metallized, the difference in linear expansion between ceramic and oxygen-free copper is calculated, an expansion gap 12 is reserved, and the gap 12 is filled with silver-copper solder to play a transitional role, thus solving the problem of deformation and air leakage caused by welding of the oxygen-free copper and ceramic because the CTE of the oxygen-free copper is much larger than that of the ceramic.

[0037] The sealing surface of the base 1 is metallized and connected to the inner wall of the placement cavity 11 through the side surface of the base 1.

[0038] In this example, the sealing surface metallization and the bottom electrode metallization are connected through the side of the base 1, so that the sealing surface of the base 1 can be electrically conductive to the outside, which is convenient for resistance welding, and the side metallization does not need to be removed.

[0039] Embodiment 2

[0040] like Figures 3 to 8As shown, a device for assembling the housing of the RGB laser display device includes a workbench 6, a conveyor belt 20 is arranged on the workbench 6, and a loading rack 7, a cleaning component 8, a discharge component a9 and a discharge component b10 are arranged on the upper end of the conveyor belt 20 from left to right, and a plurality of partition plates 201 are arranged on the conveyor belt 20, and the base 1 in the loading rack 7 is discharged through the partition plates 201, and the oxygen-free copper 2 is discharged through the discharge component a9 while driving the cleaning component 8 to perform air blowing cleaning on the base 1, and the silver-copper solder 3 is discharged through the discharge component b10.

[0041] It is worth mentioning here that the base 1 in the loading rack 7 is unloaded through the partition plate 201, the oxygen-free copper 2 is unloaded through the unloading component a9, and at the same time, the cleaning component 8 is driven to perform air blowing cleaning on the base 1, and the silver-copper solder 3 is unloaded through the unloading component b10, thereby saving energy.

[0042] like Figure 4 As shown, a feeding opening 71 for feeding only one base 1 is provided at the lower end of the feeding frame 7 .

[0043] like Figure 5 As shown, the cleaning component 8 includes a support frame 81 arranged on the conveyor belt 20, an air blowing member 82 arranged on the support frame 81, and an air cylinder 83 arranged at the front end of the discharge component a9, and an air pipe 84 is arranged between the air cylinder 83 and the air blowing member 82.

[0044] like Figure 5 , Figure 6 As shown, the discharge assembly a9 includes a cylinder body a91 and a piston rod a92 driven by the cylinder body a91, a loading frame a93 is arranged on the piston rod a92, a pressure rod 97 slidably arranged in the air cylinder 83 is arranged at the lower end of the piston rod a92, a plurality of storage cavities a94 corresponding to the placement cavity 11 are opened on the loading frame a93, a gate a95 is slidably arranged at the lower end of the storage cavity a94, and electric control switches a96 are arranged on both sides of the lower end of the loading frame a93.

[0045] like Figure 5 , Figure 7 As shown, the discharge assembly b10 includes a cylinder body b101 and a piston rod b102 driven by the cylinder body b101, a loading frame b103 is arranged on the piston rod b102, a plurality of storage cavities b104 corresponding to the gap 12 are opened on the loading frame b103, a gate b105 is slidably arranged at the lower end of the storage cavity b104, and electric control switches b106 are arranged on both sides of the lower end of the loading frame b103.

[0046] The working process is as follows:

[0047] The conveyor belt 20 is started, and when the gap between the partition plates 201 rotates to the loading rack 7, the base 1 falls into the gap, and the conveyor belt 20 drives it to rotate;

[0048] When passing through the air blowing member 82, the air blowing member 82 performs air blowing cleaning on the base 1. When the base 1 reaches the lower end of the loading frame a93, the piston rod a92 moves downward, driving the loading frame a93 to move downward to dock with the base 1, and the base 1 squeezes the electric control switch a96 to drive the gate a95 to open, and the oxygen-free copper is sent to the placement chamber 11. At the same time, the piston rod a92 moves downward to drive the pressure rod 97 to press down, and the air in the air cylinder 83 is sent to the air blowing member 82 through the air pipe 84 to perform air blowing cleaning on the next base 1;

[0049] When the base 1 reaches the lower end of the loading frame b103, the piston rod b102 moves downward, driving the loading frame b103 to move downward and dock with the base 1. The base 1 squeezes the electric control switch b106 to drive the gate b105 to open, and the silver-copper solder is delivered to the gap 12.

[0050] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A housing of an RGB laser display device, comprising a base (1), characterized in that: The base (1) is provided with a plurality of placement cavities (11), oxygen-free copper (2) is welded in the placement cavities (11), the placement cavities (11) are used for brazing the oxygen-free copper (2), gaps (12) are left around the oxygen-free copper (2), the gaps (12) are used for filling silver-copper solder (3), a chip placement cavity (13) is provided at the upper end of the placement cavity (11), a calcifier sheet (4) is welded at the upper end of the base (1), a tube cap (5) is welded at the upper end of the calcifier sheet (4), the calcifier sheet (4) and the tube cap (5) are welded to the base (1) by parallel sealing welding, and the heat dissipation efficiency of the base (1) is improved by the oxygen-free copper (2).

2. The RGB laser display device housing according to claim 1, characterized in that: The pipe cap (5) is provided with a plurality of windows (51), and a plurality of glass window sheets (52) are welded to the windows (51).

3. The RGB laser display device housing according to claim 1, characterized in that: The pipe cap (5) is made of varable metal.

4. The RGB laser display device housing according to claim 1, characterized in that: The inner side wall of the placement cavity (11) is metallized.

5. The RGB laser display device housing according to claim 1, characterized in that: The sealing surface of the base (1) is metallized and connected to the inner wall of the placement cavity (11) through the side surface of the base (1).

6. A device for assembling the housing of the RGB laser display device according to claims 1 to 5, comprising a workbench (6), characterized in that: The workbench (6) is provided with a conveyor belt (20), and a loading rack (7), a cleaning component (8), a discharge component a (9) and a discharge component b (10) are sequentially provided at the upper end of the conveyor belt (20) from left to right. The conveyor belt (20) is provided with a plurality of partition plates (201), and the base (1) in the loading rack (7) is discharged through the partition plates (201), the oxygen-free copper (2) is discharged through the discharge component a (9), and the cleaning component (8) is driven to perform air blowing cleaning on the base (1), and the silver-copper solder (3) is discharged through the discharge component b (10).

7. The RGB laser display device housing assembly device according to claim 6, characterized in that: The lower end of the loading rack (7) is provided with a loading port (71) for loading only one base (1).

8. The RGB laser display device housing assembly device according to claim 6, characterized in that: The cleaning assembly (8) comprises a support frame (81) arranged on the conveyor belt (20), an air blowing member (82) arranged on the support frame (81), and an air cylinder (83) arranged at the front end of the discharge assembly a (9), and an air pipe (84) is arranged between the air cylinder (83) and the air blowing member (82).

9. The RGB laser display device housing assembly device according to claim 8, characterized in that: The material discharge assembly a (9) comprises a cylinder body a (91) and a piston rod a (92) driven by the cylinder body a (91); a loading frame a (93) is arranged on the piston rod a (92); a pressure rod (97) slidably arranged in the air cylinder (83) is arranged at the lower end of the piston rod a (92); a plurality of storage cavities a (94) corresponding to the placement cavity (11) are opened on the loading frame a (93); a gate a (95) is slidably arranged at the lower end of the storage cavity a (94); and electric control switches a (96) are arranged on both left and right sides of the lower end of the loading frame a (93).

10. The RGB laser display device housing assembly device according to claim 6, characterized in that: The material discharge assembly b (10) comprises a cylinder body b (101) and a piston rod b (102) driven by the cylinder body b (101); a loading frame b (103) is arranged on the piston rod b (102); a plurality of storage cavities b (104) corresponding to the gaps (12) are opened on the loading frame b (103); a gate b (105) is slidably arranged at the lower end of the storage cavity b (104); and electric control switches b (106) are arranged on both left and right sides of the lower end of the loading frame b (103).

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