Pin seat and packaging shell brazing mold

Abstract

The utility model discloses a pin base and a packaging shell brazing mold. The pin base comprises a mold base and a magnetic attraction piece. The die holder is provided with a mounting channel, and the mounting channel is used for allowing a magnetic contact pin part to extend in and enabling the contact pin to be provided with a connecting end located outside the mounting channel; the magnetic attraction part is installed on the die holder and used for magnetically attracting the contact pin and limiting the contact pin to be separated from the installation channel. According to the contact pin seat provided by the utility model, after the magnetically-attracted contact pin is inserted into the mounting channel of the die seat, the contact pin can be magnetically attracted on the die seat through the magnetic attraction piece, so that when the die seat is turned over, the contact pin can be effectively prevented from being separated from the mounting channel, the product yield is improved, the structure is simple, and the cost is relatively low; the adverse effect of high temperature on the magnetic attraction part can be reduced, the magnetic attraction part can be quickly reused, and convenience is improved; and heat in the brazing furnace can be directly guided into the mold through the first heat conduction channel, so that the temperature in the mold can be rapidly increased, and the welding efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging brazing mold technology, specifically to a pin socket and a packaging shell brazing mold. Background Technology

[0002] Brazing is a welding method in which a filler metal with a melting point lower than that of the workpiece is heated to the melting temperature of the filler metal, and the liquid filler metal is used to fill the gaps in the solid workpiece to connect the metals. During the welding process, molds are usually used to position the workpieces.

[0003] Publication No. CN116079171A discloses a brazing mold and brazing method for a packaged shell. The mold is designed according to the dimensions of the ceramic component, sealing ring, inner lead, and pin. A mounting method is used to sequentially install the inner lead, sealing ring, ceramic component, and pin, eliminating the need for clamping and manual alignment under a microscope, thus achieving self-positioning of the ceramic shell.

[0004] In this patent, to ensure that the pins have a pre-reserved end for welding onto the ceramic during pin assembly, the pin welding mold base is typically inverted on the work platform first. Then, the pins are inserted into the holes of the inverted pin welding mold base using a pin assembly device. The pin welding mold base is then flipped over and pressed onto the sealing ring welding mold base. However, the pins are prone to falling off during the flipping process, reducing product yield. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a pin holder and a brazing mold for the packaging shell. This solves the technical problem in the prior art that, in order to ensure that the pin has a pre-reserved end for welding onto the ceramic, the pin welding mold is usually first inverted on the work platform, and then the pin is inserted into the hole of the inverted pin welding mold by the pin assembly device; then the pin welding mold is flipped and pressed onto the sealing ring welding mold. However, the pin welding mold is prone to pin falling off during the flipping process, which reduces the product yield.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, this utility model provides a pin socket for encapsulating a brazing mold for a housing, comprising:

[0008] A mold base having a mounting channel for a magnetically attachable pin portion to extend into, and the pin having a connecting end located outside the mounting channel; and

[0009] A magnetic attractor is installed on the mold base to magnetically attract the pin and prevent the pin from detaching from the mounting channel;

[0010] The magnetic suction component is stacked on the side of the mold base away from the connecting end and can be detached from the mold base;

[0011] The mold base also has a first heat conduction channel, the extension direction of which is the same as the extension direction of the mounting channel and extends through the mold base.

[0012] Secondly, this solution also provides a brazing mold for a packaged housing, which includes a base and a pin socket as described in any of the above.

[0013] The mold base is detachably connected to the base and can be enclosed to form a working cavity when connected. The working cavity is connected to the mounting channel and is used to place the component to be connected. The connecting end is located in the working cavity and is connected to the component to be connected.

[0014] In some embodiments, one of the mold base and the base is provided with a positioning post, and the other is provided with a positioning hole for the positioning post to be inserted. The extending direction of the positioning post is the same as the extending direction of the mounting channel.

[0015] In some embodiments, the base is provided with a second heat-conducting channel, the extension direction of the second heat-conducting channel is the same as the extension direction of the mounting channel, and it penetrates the base and communicates with the working cavity.

[0016] In some embodiments, the encapsulation housing brazing mold further includes a limiting stage, which is mounted on the base and located in the working cavity, and is used to be inserted into the limiting groove located in the component to be connected.

[0017] In some embodiments, the limiting platform includes a first platform and a second platform, the first platform and the second platform are stacked sequentially along the direction close to the mold base, and the size of the first platform is larger than the size of the second platform;

[0018] The first body is used for the sealing ring to be fitted, and the second body is used for insertion into the limiting groove.

[0019] In some embodiments, the limiting platform has a gasket groove on the side near the mold base.

[0020] In some embodiments, one side wall of the working chamber is open, and the direction of its opening intersects the extension direction of the mounting channel.

[0021] Compared with the prior art, the pin holder provided by this utility model allows the magnetically attracted pins to be magnetically attracted to the mold base after being inserted into the mounting channel of the mold base. This effectively prevents the pins from detaching from the mounting channel when the mold base is flipped, thus improving product yield. The structure is also simple and the cost is low.

[0022] Simultaneously, the connecting ends of the magnetic chuck and the pin are placed on opposite sides of the mold base, allowing them to be simultaneously fixed to the mold base by magnetic attraction. After the mold base is combined with the mold base, ensuring stable connection between the pin and the ceramic part, the magnetic chuck can be directly detached from the mold base. Then, the mold base, base, and weldment are sent into the brazing furnace. This reduces the adverse effects of high temperatures on the magnetic chuck and allows for quick reuse, improving convenience. Furthermore, the heat from the brazing furnace can be directly transferred into the mold's interior through the first heat conduction channel, enabling a rapid increase in the mold's internal temperature and improving welding efficiency. Attached Figure Description

[0023] Figure 1 This is an exploded view of the brazing mold for the packaging shell provided in this embodiment of the utility model;

[0024] Figure 2 yes Figure 1 Exploded view of the components being assembled using the brazing mold for the inner packaging shell;

[0025] Figure 3 yes Figure 2 A partial schematic diagram of the middle mold base and the insert pin;

[0026] Figure 4 yes Figure 2 Schematic diagram of the middle mold base;

[0027] Figure 5 yes Figure 1 Schematic diagram of the central base;

[0028] Figure 6 yes Figure 5 Cross-sectional view of the central base;

[0029] Figure 7 yes Figure 2 A schematic diagram of a Chinese porcelain piece.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Mold base; 1a. Mounting channel; 1b. First heat conduction channel; 1c. Positioning hole; 2. Magnetic suction component; 3. Base; 3a. Working cavity; 3b. Second heat conduction channel; 3c. Opening; 31. Positioning post; 4. Limiting platform; 4a. Gasket groove; 41. First platform; 42. Second platform; 5. Pin; 51. Connecting end; 6. Ceramic component; 6a. Limiting groove; 7. Gasket; 71. Gasket welding piece; 8. Sealing ring; 81. Sealing ring welding piece. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] To address the technical problem in existing technologies where, to ensure the pin has a pre-reserved end for welding onto ceramic, the pin welding mold is typically inverted on a work platform, and then the pin is inserted into the hole in the inverted mold using a pin assembly device. The mold is then flipped and pressed onto a sealing ring welding mold. However, the pin is prone to detaching during the flipping process, reducing product yield. This invention provides a pin holder and a brazing mold for the packaging shell, which uses a magnetic attractor to magnetically attach the pin to the mold holder. This effectively prevents the pin from detaching from the mounting channel when the mold holder is flipped, improving product yield. Furthermore, the structure is simple and the cost is low.

[0034] It should be noted that the pin socket described in this utility model is used for, but not limited to, the brazing mold for the packaging shell. For ease of explanation, this utility model only uses the application of the brazing mold for the packaging shell as an example. The principle of the brazing mold for the packaging shell in other types of equipment is essentially the same as that in the brazing mold for the packaging shell, and will not be described in detail here.

[0035] Please see Figures 1 to 4 , Figures 1 to 4 This is a schematic diagram of the structure of a pin holder 5 in one embodiment of the present invention. The pin holder 5 is used to encapsulate a brazing mold for the outer shell. It includes a mold base 1 and a magnetic attractor 2. The mold base 1 has an installation channel 1a for the magnetically attractable pin 5 to extend into, and the pin 5 has a connecting end 51 located outside the installation channel 1a. The magnetic attractor 2 is installed on the mold base 1 to magnetically attract the pin 5 and prevent the pin 5 from detaching from the installation channel 1a. The magnetic attractor 2 is stacked on the side of the mold base 1 away from the connecting end 51 and can be detached from the mold base 1. The mold base 1 also has a first heat conduction channel 1b, the extension direction of the first heat conduction channel 1b is the same as the extension direction of the installation channel 1a, and it penetrates the mold base 1.

[0036] The pin holder provided by this utility model allows the magnetically attracted pin 5 to be inserted into the mounting channel 1a of the mold base 1. The magnetic attractor 2 can then magnetically attract the pin 5 onto the mold base 1, thereby effectively preventing the pin 5 from detaching from the mounting channel 1a when the mold base 1 is flipped, improving product yield. The structure is simple and the cost is low.

[0037] Simultaneously, the connecting ends 51 of the magnetic chuck 2 and the pin 5 are placed on opposite sides of the mold base 1, so that the two can be fixed to the mold base 1 by the magnetic attraction between them. After the mold base 1 is combined with the mold base 3, so that the pin 5 and the ceramic part 6 are stably connected, the magnetic chuck 2 can be directly removed from the mold base 1; then the mold base 1, the base 3 and the weldment are sent into the brazing furnace. In this way, the adverse effects of high temperature on the magnetic chuck 2 can be reduced, and the magnetic chuck 2 can be quickly reused, improving convenience. And the heat in the brazing furnace can be directly introduced into the interior of the mold through the first heat conduction channel 1b, so that the internal temperature of the mold can be rapidly increased, improving welding efficiency.

[0038] It should be noted that the magnetic component 2 can be in the form of magnetic particles, magnetic strips, or magnetic plates. Furthermore, the magnetic component 2 can be a conventional hard magnet or a soft magnet. It should be understood that during the brazing of the package casing, the PIN pins (pins 5), the component to be connected (ceramic part 6), the gasket 7, the sealing ring 8, the gasket solder pad 71, and the sealing ring solder pad 81 are typically assembled onto the mold and then placed into the brazing furnace to complete all welding operations in one step.

[0039] In this solution, the magnetic accumulator 2 is set as a soft magnet, and its magnetic force is sufficient to magnetically attract the pin 5, while it cannot magnetically attract and pull other parts of the weldment.

[0040] Specifically, in one embodiment, the pin 5 is made of 4J42 (iron-nickel constant expansion alloy) head, and AgCu28 solder is wrapped around the connecting end 51. The ceramic part 6 is made of Al2O3; the gasket 7 and sealing ring 8 are made of Kovar; and the gasket solder piece 71 and sealing ring solder piece 81 are made of AgCu28.

[0041] Furthermore, it should be noted that, to ensure that the pin 5 has a connecting end 51 located outside the mounting channel 1a, in one embodiment, the mounting channel 1a is configured as a blind hole to prevent the pin 5 from passing through entirely. In another embodiment, the inner diameter of the mounting channel 1a is gradually reduced along its axial direction to limit the pin 5. In yet another embodiment, the mounting channel 1a can be configured as a channel with a stepped surface, using the stepped surface to limit the pin 5.

[0042] It should be understood that the magnetic force of the magnetic chuck 2 has a certain recovery ability after being removed from the high temperature. In one embodiment, the magnetic chuck 2, the mold base 1, the base 3, and the flux are simultaneously fed into the brazing furnace.

[0043] In addition, this utility model also provides a brazing mold for a packaged shell, which includes a base 3 and a pin 5 seat as described above; wherein, the mold base 1 and the base 3 are detachably connected and can be enclosed to form a working cavity 3a when connected, the working cavity 3a is connected to the mounting channel 1a and is used to place the component to be connected, and the connecting end 51 is located in the working cavity 3a and is connected to the component to be connected.

[0044] It should be noted that the detailed structure of the pin 5 socket of the encapsulation shell brazing mold can be referred to the above embodiment of the pin 5 socket, and will not be repeated here; since the above pin 5 socket is used in the encapsulation shell brazing mold of this utility model, the embodiment of the encapsulation shell brazing mold of this utility model includes all the technical solutions of all the above embodiments of the pin 5 socket, and the technical effects achieved are also completely the same, and will not be repeated here.

[0045] In this design, the mold base 1 and the base 3 can be detachably connected via latches, bolts, or clips. Furthermore, during assembly of the weldment, the ceramic part 6 is placed in the working cavity 3a, and the connecting end 51 of the pin 5 is pressed against the connection point on the ceramic part 6.

[0046] Furthermore, it should be noted that the mold base 1 in this design has multiple sets of mounting channels 1a, each set having multiple mounting channels 1a corresponding to the number of pins 5 required to connect to the ceramic component 6. Thus, multiple sets of mounting channels 1a can accommodate multiple ceramic components 6, enabling the mold to assemble multiple weldments simultaneously, improving welding efficiency. Specifically, this design can simultaneously weld nine sets of weldments.

[0047] In one embodiment, please refer to Figures 4 to 6 One of the mold base 1 and the base 3 is provided with a positioning post, and the other is provided with a positioning hole for the positioning post to be inserted. The extension direction of the positioning post is the same as the extension direction of the installation channel 1a.

[0048] In this embodiment, during assembly, the positioning pins are aligned with the positioning holes, and then the mold base 1 and the base 3 are brought close together to improve assembly convenience and accuracy. Specifically, in this solution, the positioning pins 31 are installed on the base 3 and located within the working cavity 3a, and the positioning holes 1c are formed in the mold base 1. Multiple positioning pins 31 and multiple positioning holes 1c are provided, with each of the multiple positioning pins 31 corresponding to one of the multiple positioning holes 1c.

[0049] In one embodiment, the base 3 is provided with a second heat conduction channel 3b, the extension direction of the second heat conduction channel 3b is the same as the extension direction of the mounting channel 1a, and it penetrates the base 3 and connects to the working cavity 3a.

[0050] Similarly, in this design, heat from the brazing furnace can be directed into the mold via the second heat conduction channel 3b, further increasing the heating rate inside the mold. Specifically, in this design, the first heat conduction channel 1b and the second heat conduction channel 3b correspond to the positions of the ceramic part 6, enabling the ceramic part 6 to heat up rapidly. Furthermore, multiple first heat conduction channels 1b and multiple second heat conduction channels 3b are provided.

[0051] In one embodiment, please refer to Figures 5 to 7 The encapsulation shell brazing mold also includes a limiting platform 4, which is installed on the base 3 and located in the working cavity 3a, and is used to insert into the limiting groove 6a of the component to be connected.

[0052] In this embodiment, the positioning of the ceramic part 6 can be achieved by the cooperation of the limiting platform 4 and the limiting groove 6a, avoiding defects caused by fluctuations in the external dimensions of the ceramic part 6, solving the problem of grading the ceramic part 6, having wide adaptability, and making the welding of the ceramic part 6 unaffected by tolerances, thereby improving the pass rate.

[0053] In one embodiment, the limiting platform 4 includes a first platform 41 and a second platform 42, which are stacked sequentially along the direction close to the mold base 1, and the size of the first platform 41 is larger than the size of the second platform 42; wherein, the first platform 41 is used for the sealing ring 8 to be fitted, and the second platform 42 is used to be inserted into the limiting groove 6a.

[0054] In this embodiment, the sealing ring 8 and the ceramic part 6 can be positioned simultaneously, further improving product quality. Specifically, in this solution, the second heat conduction channel 3b passes through both the base 3 and the limiting platform 4. Furthermore, in one embodiment, the mold base 1 and the base 3 are made of graphite material.

[0055] In one embodiment, the limiting platform 4 is provided with a gasket groove 4a on the side near the mold base 1.

[0056] In this embodiment, the gasket 7 can be limited by the gasket groove 4a to prevent the gasket 7 from moving. Specifically, in this solution, the outer side of the gasket groove 4a is open to facilitate the placement and removal of the gasket 7 and the gasket solder piece 71.

[0057] In one embodiment, one side wall of the working cavity 3a is provided with an opening 3c, and the direction of the opening 3c intersects with the extension direction of the installation channel 1a.

[0058] In this embodiment, the working chamber 3a is set with the opening 3c as described above, which further increases the rate of temperature increase inside the working chamber 3a, thereby improving welding efficiency and facilitating the cleaning of residual material inside the working chamber 3a, thus improving convenience.

[0059] It should be noted that, in one embodiment, the welding equipment adopts a high-temperature chain brazing furnace, the welding temperature is 810°C, and a hydrogen-nitrogen mixed welding atmosphere is used.

[0060] To better understand this utility model, the following is combined with... Figures 1 to 7 The technical solution of this utility model is described in detail below:

[0061] In this scheme, during assembly, the magnetic suction component 2 is stacked on the side of the mold base 1 away from the working cavity 3a, and both are inverted and placed on the working platform. Then, the pin 5 is inserted into the corresponding installation channel 1a, with the connection end 51 reserved. Next, the sealing ring 8 and the sealing ring welding piece 81 are sequentially fitted onto the first platform 41, and the gasket 7 and the gasket welding piece 71 are sequentially placed into the gasket groove 4a. Then, the limiting groove 6a of the ceramic part 6 is aligned with the second platform 42, and the ceramic part 6 is assembled onto the second platform 42. Finally, the mold base 1 is flipped over and positioned by the positioning pin 31 and the positioning hole 1c, and the mold base 1 is installed on the base 3, so that the connection end 51 presses against the connection position of the ceramic part 6. Finally, the mold with the assembled welding parts is placed in the brazing furnace.

[0062] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A pin header for use in a brazing mold for packaging a housing, characterized in that, include: A mold base having a mounting channel for a magnetically attachable pin portion to extend into, and for the pin to have a connecting end located outside the mounting channel; and A magnetic attractor is installed on the mold base to magnetically attract the pin and prevent the pin from detaching from the mounting channel; The magnetic suction component is stacked on the side of the mold base away from the connecting end and can be detached from the mold base; The mold base also has a first heat conduction channel, the extension direction of which is the same as the extension direction of the mounting channel and extends through the mold base.

2. A brazing mold for a packaging shell, characterized in that, Includes a base and a pin socket as described in claim 1; The mold base is detachably connected to the base and can be enclosed to form a working cavity when connected. The working cavity is connected to the mounting channel and is used to place the component to be connected. The connecting end is located in the working cavity and is connected to the component to be connected.

3. The brazing mold for the packaging shell according to claim 2, characterized in that, One of the mold base and the base is provided with a positioning post, and the other is provided with a positioning hole for the positioning post to be inserted. The extension direction of the positioning post is the same as the extension direction of the installation channel.

4. The brazing mold for the packaging shell according to claim 2, characterized in that, The base is provided with a second heat conduction channel, the extension direction of the second heat conduction channel is the same as the extension direction of the mounting channel, and it penetrates the base and connects to the working cavity.

5. The brazing mold for the packaging shell according to claim 2, characterized in that, The encapsulation shell brazing mold also includes a limiting platform, which is installed on the base and located in the working cavity, and is used to be inserted into the limiting groove of the component to be connected.

6. The brazing mold for the packaging shell according to claim 5, characterized in that, The limiting platform includes a first platform and a second platform, which are stacked sequentially along the direction close to the mold base, and the size of the first platform is larger than the size of the second platform. The first body is used for the sealing ring to be fitted, and the second body is used for insertion into the limiting groove.

7. The brazing mold for the packaging shell according to claim 5, characterized in that, The limiting platform has a gasket groove on the side near the mold base.

8. The brazing mold for the packaging shell according to claim 2, characterized in that, One side wall of the working chamber is open, and the direction of its opening intersects the extension direction of the installation channel.

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