Tool for brazing and assembling light window cover plate
By assembling and forming the three hollowed-in middle Kowa parts by welding and developing tooling for brazing assembly, the problem of difficulty in producing light window covers with thickness exceeding the process requirements in traditional etching processes is solved, and multi-layer assembly is achieved and controllable thickness, improving production efficiency.
Patent Information
- Application Number
- CN202421182269.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-05-28
AI Technical Summary
Traditional etching processes are difficult to produce light window covers with thicknesses exceeding their process requirements, resulting in the total thickness of light window covers exceeding the production range after the light window lens is assembled.
The three-piece hollowed-in Kowa parts are assembled and molded in welding. A tool specially designed for brazing and assembling the light window cover plate is developed, including a plate-shaped upper mold seat and a lower mold seat, which is realized by using positioning cavity and boss. The inner and outer positioning of the keva parts ensures that the thickness of the light window cover plate after welding is controllable.
Multi-layer assembly of light window covers is realized, and light window covers of various thicknesses can be processed, which improves production efficiency and avoids the thickness limitations of traditional etching processes.
Smart Images
Figure CN222511400U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of microelectronic packaging equipment, in particular to a tool used for brazing and assembling a light window cover plate. Background Art
[0002] In order to package optoelectronic components, a light window cover plate with a light-transmitting window is required. Usually, the step-type light window cover plate is produced by etching and then assembled with the light window lens. At present, in order to reduce the space occupied by the light window lens in the circuit package, the light window lens is sunken inside the light window cover plate after assembly. At this time, the thickness of the lens assembly position of the light window cover plate is greater than or equal to the thickness of the light window lens, making the total thickness of the light window cover plate exceed the range that can be produced by the etching process (usually less than 0.5mm).
[0003] In order to solve the problem that the traditional etching process cannot etch the light window cover plate beyond its process requirements, the applicant innovated the processing method of the light window cover plate and tried to assemble three pieces of hollowed-out parts in the middle by welding to obtain a light window cover plate for a light-transmitting window. For this purpose, it is necessary to develop a tooling specifically for brazing and assembling light window cover plates. Utility Model Content
[0004] The utility model aims to provide a tool for brazing and assembling a light window cover plate.
[0005] The technical solution to achieve the purpose of the utility model is: a tool for brazing and assembling a light window cover plate, which includes a plate-shaped upper die base and a lower die base, and a plurality of positioning cavities are spaced apart on the back of the upper die base, each of the positioning cavities includes a stepped slot hole opened toward the front side of the upper die base, and the number of steps of the slot hole is the same as the number of steps formed by the outer contour of the light window cover plate to be brazed; each step of the slot hole has an annular bottom wall and a side wall, and the annular bottom wall and the side wall enclose a accommodating space for the corresponding cuttable parts of the light window cover plate, and the side wall limits the outer contours of two adjacent cuttable parts, and the side wall The height is greater than the sum of the thicknesses of one piece of the kovar part and the solder, and less than the sum of the thicknesses of two pieces of the kovar parts and the solder; the height of the slot is the sum of the thicknesses of each kovar part and each solder; a positioning hole that penetrates the front surface of the upper mold base is opened at the center of the bottom of the positioning cavity; a plurality of bosses are arranged at intervals on the front surface of the lower mold base, and the number of the bosses is equal to the number of the positioning cavities, and the shape of the bosses is such that after each kovar part and the solder are placed in the corresponding step, each positioning cavity is engaged with each boss one by one, and the boss will not extend out of the positioning hole.
[0006] Furthermore, a material taking trough communicating with the positioning cavity is provided on the outer side of each positioning cavity.
[0007] Furthermore, the material taking slots of adjacent positioning cavities are connected.
[0008] The utility model realizes a tooling for brazing and assembling a light window cover plate, wherein a positioning cavity forms a housing space for each cuttable part of the light window cover plate to be brazed, and the boss and the positioning cavity respectively realize the inner positioning and the outer positioning of the cuttable part with a hollow middle portion, so that the cuttable parts can be assembled and formed by welding. The tooling can process light window covers of various thicknesses, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 This is a schematic structural diagram of a light window cover plate to be brazed according to an embodiment of the utility model;
[0010] Figure 2 This is a schematic diagram of the main structure of the upper die base according to an embodiment of the utility model;
[0011] Figure 3 for Figure 2 AA section structural diagram;
[0012] Figure 4 It is a schematic diagram of the three-dimensional structure of the lower mold base described in the embodiment of the utility model. DETAILED DESCRIPTION
[0013] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.
[0014] by Figure 1 Taking the light window cover structure shown as an example, the light window cover includes a first avulsable part 10, a second avulsable part 20 and a third avulsable part 30 stacked in sequence, the middle parts of the first avulsable part 10, the second avulsable part 20 and the third avulsable part 30 are hollowed out, and adjacent avulsable parts are welded and fixed by solder 40, and the outer contour of the light window cover is a two-step step.
[0015] like Figures 2 to 4As shown, a tool for brazing and assembling a light window cover plate, comprising a plate-shaped upper die base 1 and a lower die base 2, fifteen positioning cavities 12 are spaced apart on the back side 11 of the upper die base 1, each of the positioning cavities 12 comprises a stepped slot 121 opened toward the front side of the upper die base, the slot 121 has two steps, each step of the slot 121 has an annular bottom wall 1211 and a side wall 1212, the annular bottom wall 1211 and the side wall 1212 of the step close to the back side 11 of the upper die base 1 enclose a accommodating space for the third kovable part 30, the height of the side wall 1212 where the third kovable part 30 is located is greater than the sum of the thickness of the third kovable part 30 and the solder 40 and is less than the sum of the thickness of the second kovable part 20, the solder 40 and the third kovable part 30. 40 and the sum of the thicknesses of the third kovable part 30; the annular bottom wall 1211 and the side wall 1212 of the step away from the back side 11 of the upper mold base 1 enclose the accommodating space for the first kovable part 10 and the second kovable part 20, and the height of the side wall 1212 where the first kovable part is located is greater than the sum of the thicknesses of the first kovable part 10 and the solder 40, and less than the sum of the thicknesses of the first kovable part 10, the solder 40 and the second kovable part 20; a positioning hole 14 is provided at the center of the bottom of the positioning cavity 12 and is connected to the front side 13 of the upper mold base 1; a material extraction groove 15 connected to the positioning cavity 12 is provided on the outer side of each positioning cavity 12, and the material extraction grooves 15 of adjacent positioning cavities 12 are connected.
[0016] Fifteen bosses 22 are arranged at intervals on the front side 21 of the lower die base 2. The shapes of the bosses 22 are such that after each part and solder are placed in the corresponding step, each positioning cavity 12 is engaged with each boss 22 one by one, and the bosses will not extend out of the positioning holes.
[0017] When in use, the first kovable part, the second kovable part, the third kovable part and the silver-copper solder of the light window cover are sequentially inserted into the steps of the boss, and then the upper die seat and the lower die seat are buckled, the positioning cavity limits the outer contour of the first kovable part, the second kovable part and the third kovable part, the boss limits the inner side of the first kovable part, the second kovable part and the third kovable part, the buckled upper die seat and the lower die seat clamp each kovable part in the tooling, and then the brazing operation is performed. The side wall limits the periphery of two adjacent kovable parts, the height of the side wall is greater than the sum of the thickness of one kovable part and the solder, and less than the sum of the thickness of two kovable parts and the solder, and the height of the slot is the sum of the thickness of each kovable part and each solder, so as to ensure that each kovable part is welded together after the brazing is completed.
[0018] The number of the positioning cavities and bosses described in the utility model is not limited, as long as the two correspond one to one; the number of steps of the slot holes is not limited to that shown in the embodiment, and it can be the same as the number of steps formed by the outer contour of the light window cover plate to be brazed; the material extraction groove is set according to needs, and usually the brazed light window cover plate can be directly removed from the upper mold base. If the size of individual cuttable parts is too large, it is necessary to use tools to pry them out from one side of the material extraction groove; the material extraction grooves of adjacent positioning cavities are connected, which is convenient for the processing of the upper mold base.
[0019] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.
Claims
1. A tool for brazing and assembling a light window cover plate, characterized in that: It comprises a plate-shaped upper die seat and a lower die seat, a plurality of positioning cavities are arranged at intervals on the back of the upper die seat, each of the positioning cavities comprises a stepped slot hole opened toward the front side of the upper die seat, the number of steps of the slot hole is the same as the number of steps formed by the outer contour of the light window cover plate to be brazed; each step of the slot hole has an annular bottom wall and a side wall, the annular bottom wall and the side wall enclose a corresponding accommodating space of the light window cover plate, the side wall limits the outer contours of two adjacent avulsible parts, and the height of the side wall is greater than that of a piece of the avulsible part and the welding part. The sum of the thicknesses of the two kovar parts and the solder is less than the sum of the thicknesses of the two kovar parts and the solder; the height of the slot is the sum of the thicknesses of each kovar part and each solder; a positioning hole is provided at the center of the bottom of the positioning cavity and is connected to the front side of the upper mold base; a plurality of bosses are arranged at intervals on the front side of the lower mold base, and the number of the bosses is equal to the number of the positioning cavities; the shape of the bosses is such that after each kovar part and the solder are placed in the corresponding step, each positioning cavity is relatively engaged with each boss one by one, and the bosses will not extend out of the positioning hole.
2. The tooling for brazing and assembling a light window cover plate according to claim 1, characterized in that: A material taking trough communicating with the positioning cavity is provided on the outer side of each positioning cavity.
3. The tooling for brazing and assembling a light window cover plate according to claim 2, characterized in that: The material taking slots of adjacent positioning cavities are connected.