Graphite mold for glass fusion sealing metal packaging shell
By designing support units and conical grooves in the graphite mold, the contact area between the glass insulator and the mold is reduced, solving the problem of graphite adhesion caused by high-temperature deformation of the glass insulator and improving the insulation performance of the metal encapsulation shell.
Patent Information
- Application Number
- CN202422912288.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In the glass sealing process, the glass insulator deforms at high temperatures, increasing the contact area with the mold. Graphite tends to adhere to the insulator, affecting the insulation performance of the metal encapsulation shell.
Design a graphite mold comprising a mold body and a support unit. The mold body has a placement groove, and the support unit is installed on the inner wall of the placement groove. The bottom of the inner wall of the placement groove has a conical groove. The support unit includes a support ring and a protrusion. The support ring and the protrusion reduce the contact area between the glass insulator and the mold, and provide deformation space.
This reduces the contact area between the glass insulator and the graphite mold, decreases the amount of graphite adhesion, and improves the insulation performance of the metal encapsulation shell.
Smart Images
Figure CN223522431U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of molds, in particular to a graphite mold for glass sealing and metal packaging shell. BACKGROUND
[0002] Glass sealing is a common packaging process, which has high temperature stability, low thermal expansion coefficient, good insulation performance, excellent air tightness and high reliability, and is therefore widely used in metal packaging shells of semiconductor devices, optical devices, sensors and the like. The quality of glass sealing determines the performance of the metal packaging shell, and therefore the design of the graphite mold for the glass sealing and metal packaging shell is particularly important.
[0003] The existing graphite mold is generally provided with a placing groove for placing a glass insulator. When the metal packaging shell is sealed by the glass insulator, the metal packaging shell is placed on the graphite mold, the glass insulator is placed at the packaging hole of the metal packaging shell, and the glass insulator is placed at the placing groove, and the glass insulator is supported by the inner wall of the placing groove.
[0004] However, when the metal packaging shell is sealed by the glass insulator, the shape of the glass insulator will change under high temperature, so that the glass insulator and the graphite mold have a large contact surface, and thus the glass insulator is covered with a large amount of graphite. In the subsequent electroplating process of the metal packaging shell, the position of the glass insulator covered with graphite is easily covered with a plating layer, thereby affecting the insulation performance of the metal packaging shell. CONTENT OF THE INVENTION
[0005] In order to reduce the amount of graphite adhered to the glass insulator during the sealing process, the application provides a graphite mold for glass sealing and metal packaging shell.
[0006] The graphite mold for glass sealing and metal packaging shell provided by the application adopts the following technical scheme:
[0007] A graphite mold for glass sealing and metal packaging shell, the graphite mold is used for placing a glass insulator, and the graphite mold comprises a mold body and a supporting unit, wherein:
[0008] The mold body is provided with a placing groove;
[0009] The supporting unit is arranged at the inner wall of the placing groove.
[0010] Optionally, the inner wall bottom of the placing groove is provided with a tapered groove, and the inner wall bottom of the placing groove extends to the inner wall of the tapered groove to form the supporting unit.
[0011] Optionally, the cross-sectional diameter of the tapered groove gradually decreases in the upward direction.
[0012] Optionally, the support unit comprises a support ring and a protrusion, wherein:
[0013] The support ring is arranged on the inner wall of the placing groove by a limiting member;
[0014] The protrusion is arranged on the top of the support ring.
[0015] Optionally, a plurality of limiting holes are arranged at the bottom of the inner wall of the placing groove, the limiting member comprises a plurality of limiting rods, the plurality of limiting rods are distributed in the circumferential direction along the axis direction of the support ring, the top of each limiting rod is arranged on the support ring, the limiting rod and the limiting hole are matched, and each limiting rod and each limiting hole are inserted and matched.
[0016] Optionally, the limiting rod and the support ring are detachably connected.
[0017] Optionally, the longitudinal section of the support ring is arranged in a trapezoidal shape.
[0018] Optionally, a plurality of protrusions are arranged in the axis direction along the axis direction of the support ring, and the tops of the plurality of protrusions are flush.
[0019] In summary, the present application has at least one of the following beneficial technical effects:
[0020] 1. When the glass insulator is placed, the bottom of the glass insulator is placed at the junction of the bottom of the inner wall of the placing groove and the inner wall of the tapered groove, so that the glass insulator and the graphite mold are in line contact, thereby reducing the contact area of the glass insulator and the graphite mold. When the glass insulator deforms due to high temperature, the placing groove and the tapered groove provide a deformation space for the glass insulator, thereby further reducing the contact area of the glass insulator and the graphite mold and reducing the amount of graphite adhered to the glass insulator. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 is a schematic view of the glass insulator placed in the metal packaging shell in embodiment 1 of the present application.
[0022] Figure 2 is an enlarged schematic view of part A in Figure 1
[0023] Figure 3 is a schematic view of the overall structure in embodiment 1 of the present application.
[0024] Figure 4 is a schematic view of the overall structure in embodiment 2 of the present application.
[0025] Figure 5 is a schematic view of the support unit structure in embodiment 2 of the present application.
[0026] MARKED IN THE DRAWINGS:
[0027] 1, mold body; 11, placing groove; 12, tapered groove; 2, supporting unit; 21, supporting ring; 22, protrusion; 23, limiting piece; 3, glass insulator; 4, metal packaging shell. DETAILED DESCRIPTION
[0028] The application will be further described below with reference to the accompanying drawings. Figures 1-5 The application will be further described below with reference to the accompanying drawings.
[0029] The application discloses a graphite mold for glass sealing metal packaging shell.
[0030] Embodiment 1
[0031] The graphite mold for glass sealing metal packaging shell is used for placing a glass insulator 3, and comprises a mold body 1 and a supporting unit 2. The mold body 1 is provided with a placing groove 11, and the supporting unit 2 is installed at the inner wall position of the placing groove 11.
[0032] When the metal packaging shell 4 is subjected to glass sealing, the metal packaging shell 4 is placed on the graphite mold, and then the glass insulator 3 is placed at the packaging hole of the metal packaging shell 4. When the glass insulator 3 is placed, the glass insulator 3 is placed on the supporting unit 2, the contact area of the glass insulator 3 and the graphite mold is reduced through the supporting unit 2, and thus the amount of graphite sticking to the glass insulator 3 is reduced.
[0033] In the embodiment of the application, the cross section of the placing groove 11 is circularly arranged, and the circular diameter is greater than the maximum diameter of the glass insulator 3. The inner wall bottom of the placing groove 11 is provided with a tapered groove 12, the axis of the tapered groove 12 is vertically arranged, and the inner wall bottom of the placing groove 11 extends to the inner wall of the tapered groove 12 to form the supporting unit 2.
[0034] When the glass insulator 3 is placed, the bottom side of the glass insulator 3 is placed at the junction of the inner wall bottom of the placing groove 11 and the inner wall of the tapered groove 12, so that the contact area of the glass insulator 3 and the graphite mold is reduced on the basis of supporting the glass insulator 3 by the graphite mold.
[0035] When the glass insulator 3 is deformed due to high temperature, the inside of the placing groove 11 and the tapered groove 12 both leave space for the deformation of the glass insulator 3, so that when the glass insulator 3 is deformed, the contact area of the glass insulator 3 and the inner wall bottom of the placing groove 11 is further reduced, and the contact area of the glass insulator 3 and the inner wall of the tapered groove 12 is also reduced, so that the amount of graphite sticking to the glass insulator 3 is reduced.
[0036] The diameter of the cross section of the tapered groove 12 gradually decreases along the direction from top to bottom. This arrangement has the advantages of facilitating the processing of the graphite mold and improving the stability of the glass insulator 3.
[0037] The implementation principle of the graphite mold for glass sealing metal packaging shell according to the embodiment of the application is that when the glass insulator 3 is placed, the bottom of the glass insulator 3 is placed at the junction of the inner wall bottom of the placing groove 11 and the inner wall of the tapered groove 12, so that the glass insulator 3 is in line contact with the graphite mold, thereby reducing the contact area between the glass insulator 3 and the graphite mold. When the glass insulator 3 deforms due to high temperature, the placing groove 11 and the tapered groove 12 leave a deformation space for the glass insulator 3, thereby further reducing the contact area between the glass insulator 3 and the graphite mold and reducing the amount of graphite adhered to the glass insulator 3.
[0038] Embodiment 2
[0039] The embodiment of the application differs from the embodiment 1 in that the support unit 2 comprises a support ring 21 and a protrusion 22. The support ring 21 is installed on the inner wall of the placing groove 11 through a limiting piece 23, and the protrusion 22 is arranged on the top of the support ring 21.
[0040] Before the glass insulator 3 is placed, the support ring 21 is placed inside the placing groove 11 through the limiting piece 23. When the glass insulator 3 is placed, the bottom of the glass insulator 3 is placed on the top of the protrusion 22. The small contact area between the glass insulator 3 and the protrusion 22 reduces the amount of graphite adhered to the glass insulator 3. When the glass insulator 3 deforms due to high temperature, a space is left between the protrusion 22 and the support ring 21 for the glass insulator 3 to deform, thereby reducing the contact area between the deformed glass insulator 3 and the support ring 21 and reducing the amount of graphite adhered to the glass insulator 3.
[0041] The limiting piece 23 comprises a plurality of limiting rods. The length direction of the limiting rods is parallel to the axis of the support ring 21, and the plurality of limiting rods are distributed in the circumferential direction along the axis of the support ring 21. The top end of the limiting rod is arranged at the bottom of the support ring 21.
[0042] A plurality of limiting holes are arranged at the bottom of the inner wall of the placing groove 11. The plurality of limiting rods and the plurality of limiting holes are one-to-one corresponding, and the limiting rod and the corresponding limiting hole are inserted and matched.
[0043] When the support ring 21 is placed, the limiting rod is inserted into the corresponding limiting hole. The plurality of limiting rods jointly support the support ring 21 to improve the stability of supporting the glass insulator 3. At the same time, the inner wall of the limiting hole limits the support ring 21 through the limiting rod, thereby reducing the possibility of the support ring 21 shaking and further improving the working stability of the support ring 21.
[0044] The limiting rod and the supporting ring 21 are detachably connected, and in the embodiment of the application, the limiting rod and the supporting ring 21 are bonded. In this way, different limiting rods and supporting rings 21 can be combined, and the limiting rod or the supporting ring 21 can be replaced when damaged.
[0045] The longitudinal section of the supporting ring 21 is in a trapezoidal shape, and the top area of the supporting ring 21 is smaller than the bottom area of the supporting ring 21, so as to improve the connection stability of the limiting rod and the supporting ring 21. In the embodiment of the application, the longitudinal section of the supporting ring 21 is in a right trapezoidal shape.
[0046] The protrusion 22 is located at the top of the supporting ring 21, and the protrusion 22 and the supporting ring 21 are integrally formed. In the embodiment of the application, the protrusion 22 is formed by high-temperature pressing of the supporting ring 21. The longitudinal section of the supporting ring 21 is in a trapezoidal shape, and the smaller area at the top of the supporting ring 21 also improves the convenience of pressing the protrusion 22.
[0047] The protrusion 22 can be annular, and the longitudinal section of the protrusion 22 gradually decreases from bottom to top. The protrusion 22 can be provided in multiple numbers, and the multiple protrusions 22 can support the glass insulator 3 at multiple points. In the embodiment of the application, the protrusion 22 is provided in multiple numbers, and each protrusion 22 is in a hemispherical shape. The glass insulator 3 and the protrusion 22 are in point contact, and the contact area of the glass insulator 3 with graphite is further reduced.
[0048] To improve the support stability of the glass insulator 3, the tops of the multiple protrusions 22 are flush.
[0049] To facilitate heat conduction, in the embodiment of the application, the supporting unit 2 is made of graphite.
[0050] The implementation principle of the embodiment 2 is that before the glass insulator 3 is placed, the limiting rod is inserted into the limiting hole to limit the supporting ring 21, and then the bottom of the glass insulator 3 is placed on the protrusion 22 on the supporting ring 21. The protrusion 22 supports the glass insulator 3 at multiple points, so as to reduce the contact area of the glass insulator 3 with graphite. The space between the protrusion 22 and the supporting ring 21 is left for the deformation of the glass insulator 3, and the contact area of the glass insulator 3 with graphite is further reduced, so as to reduce the amount of graphite adhered to the glass insulator 3.
[0051] The above are preferred embodiments of the application, and do not limit the protection scope of the application. Therefore, equivalent changes made on the basis of the structure, shape, and principle of the application should be covered within the protection scope of the application.
Claims
1. A graphite mold for a glass-sealed metal package enclosure for placing a glass insulator, characterized by: The graphite mold comprises a mold body and a supporting unit, wherein: The mold body is provided with a placing groove; The supporting unit is arranged on the inner wall of the placing groove.
2. A graphite mold for glass-to-metal sealed metal package enclosures according to claim 1, characterized in that: The inner wall bottom of the placing groove is provided with a tapered groove, and the inner wall bottom of the placing groove extends to the inner wall of the tapered groove to form the supporting unit.
3. A graphite mold for glass-to-metal sealed metal package enclosures according to claim 2, wherein: The cross-sectional diameter of the tapered groove gradually decreases along the upward-to-downward direction.
4. A graphite mold for glass-to-metal sealed metal package housing according to claim 1, characterized in that: The supporting unit comprises a supporting ring and a protrusion, wherein: The supporting ring is arranged on the inner wall of the placing groove through a limiting piece; The protrusion is arranged on the top of the supporting ring.
5. A graphite mold for glass-to-metal sealed metal package housing according to claim 4, characterized in that: The inner wall bottom of the placing groove is provided with a plurality of limiting holes, the limiting piece comprises a plurality of limiting rods, the plurality of limiting rods are distributed in the circumferential direction along the axis direction of the supporting ring, the top of each limiting rod is arranged on the supporting ring, the limiting rod and the limiting hole are matched, and each limiting rod and each limiting hole are inserted and matched.
6. A graphite mold for glass-to-metal sealed metal package housing according to claim 5, characterized in that: The limiting rod and the supporting ring are detachably connected.
7. A graphite mold for glass-to-metal sealed metal package housing according to claim 5, wherein: The longitudinal section of the supporting ring is arranged in a trapezoidal shape.
8. A graphite mold for glass-to-metal sealed metal package housing according to claim 5, wherein: A plurality of protrusions are arranged in the axial direction along the axis direction of the supporting ring, and the tops of the plurality of protrusions are flush.