Packaging jig of TO sensor

Abstract

The utility model provides a TO sensor packaging jig, which comprises a sealing assembly, a pipe cap jig, a pipe seat jig and a heating piece, and is characterized in that the sealing assembly comprises a vacuum cavity, and a pipe cap fixing piece and a pipe seat lifting piece which are arranged in the vacuum cavity; the pipe cap jig is located in the vacuum cavity and fixed by the pipe cap fixing piece, and the pipe cap jig is located above the pipe base lifting piece. A positioning rod is arranged on the tube seat jig, penetrates through the tube cap jig and is propped against the tube seat lifting piece; the sealing assembly comprises a vacuum cavity and a heating piece, the heating piece is located in the vacuum cavity, the heating piece is arranged on the tube cap jig and / or the tube base jig, the vacuum cavity of the sealing assembly provides vacuum welding conditions for the TO sensor, the space of the vacuum cavity is reasonably utilized, and the packaging jig is effectively arranged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of packaging fixture, especially a kind of packaging fixture of T0 sensor. BACKGROUND

[0002] TO sensor generally refers to the sensor using TO (Transistor Outline, transistor outline) package. Referring to Figure 1 And Figure 2 , TO package, i.e. coaxial package, is composed of a cap 110 and a base 120, which provides a protective shell for the sensor and helps to ensure its stability and reliability.

[0003] The base and the cap are generally packaged by a jig, for example, a multi-channel packaging jig disclosed in CN220324412U, which sequentially places the base jig and the cap jig on the positioning mechanism, and then the base on the base jig and the cap on the cap jig are spliced after the base jig and the cap jig are pressed against each other.

[0004] The base and the cap are welded together, and vacuum welding can avoid oxidation of the workpiece during welding, ensuring the purity and smoothness of the weld.

[0005] In addition, the base jig and the cap jig need to be close and far away from each other, and the base and the cap can be spliced when they are close to each other, and the spliced sensor can be easily removed when they are far away from each other. INVENTION CONTENTS

[0006] The utility model aims at the deficiencies in the prior art, and provides a packaging jig for TO sensor, which reasonably utilizes space layout and meets the vacuum welding condition.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A packaging jig for TO sensor, comprising:

[0009] A closed assembly, comprising a vacuum cavity, a cap fixing member and a base lifting member arranged in the vacuum cavity;

[0010] A cap jig, located in the vacuum cavity and fixed by the cap fixing member, above the base lifting member;

[0011] A base jig, provided with a positioning rod, the positioning rod penetrating the cap jig and abutting against the base lifting member;

[0012] a heating element, the heating element being located in the vacuum cavity, the tube cap jig and / or the tube seat jig being provided with the heating element.

[0013] As a preferred embodiment, the number of the tube cap fixing members is two, and the tube cap jig is clamped and fixed between the two tube cap fixing members.

[0014] As a preferred embodiment, the tube seat lifting member comprises:

[0015] a power member;

[0016] a support plate, the support plate being connected with the power member, the support plate being located between the power member and the tube cap jig, and the positioning rod abutting against the support plate.

[0017] As a preferred embodiment, the support plate comprises:

[0018] a support plate, the support plate being connected with the power member;

[0019] a support block, the support block being provided on the support plate, and the support block being used for the positioning rod to abut against.

[0020] As a preferred embodiment, the number of the support plates is two, and the two support plates are cross arranged, and two ends of each of the support plates are respectively provided with the support blocks.

[0021] As a preferred embodiment, the positioning rod comprises:

[0022] a positioning section, the positioning section being connected with the tube seat jig, and the positioning section being sleeved in the sleeve hole of the tube cap jig;

[0023] an extension section, the extension section being threadedly connected with the positioning section, and abutting against the tube seat lifting member.

[0024] As a preferred embodiment, the tube cap jig has a tube cap mounting surface, and a plurality of tube cap mounting portions are formed on the tube cap mounting surface.

[0025] The tube seat jig has a tube seat mounting surface, and a plurality of tube seat mounting portions are formed on the tube seat mounting surface.

[0026] The tube seat mounting surface is opposite to the tube cap mounting surface, and the tube cap mounting portions and the tube seat mounting portions correspond to each other in one-to-one manner.

[0027] As a preferred embodiment, the temperature measuring sensor is further provided.

[0028] a temperature measuring sensor, the temperature measuring sensor being provided on the tube cap jig.

[0029] As a preferred embodiment, the temperature measuring sensor is further provided.

[0030] A counterweight column is arranged on the tube base jig.

[0031] As a preferred embodiment, the vacuum cavities of the closed assembly are respectively connected with a vacuum pump machine and a nitrogen filling instrument.

[0032] Compared with the prior art, the technical scheme has the following advantages:

[0033] The closed assembly provides a vacuum cavity for vacuum welding, and provides a vacuum welding condition for the TO sensor.

[0034] The space of the vacuum cavity is reasonably utilized, and the packaging jig is effectively arranged, while the approaching and moving away of the tube base jig and the tube cap jig are met.

[0035] The utility model is further illustrated below in combination with the drawings and embodiments. DRAWINGS

[0036] Figure 1 It is an exploded view of the TO sensor of the utility model;

[0037] Figure 2 It is a structural schematic view of the TO sensor of the utility model;

[0038] Figure 3 It is a structural schematic view of the packaging jig of the TO sensor of the utility model;

[0039] Figure 4 It is a schematic view of the middle vacuum cavity of the packaging jig of the TO sensor of the utility model;

[0040] Figure 5 It is a structural schematic view of the tube cap fixing piece and the tube base lifting piece of the utility model;

[0041] Figure 6 It is a structural schematic view of the tube cap jig of the utility model;

[0042] Figure 7 It is a structural schematic view of the tube base jig of the utility model.

[0043] In the figure: 110, tube cap; 120, tube base; 121, PIN pin; 130, solder; 200, closed assembly; 210, vacuum cavity; 220, tube cap fixing piece; 230, tube base lifting piece; 231, support plate; 231a, support plate; 231b, support block; 240, positioning rod; 241, positioning section; 242, extension section; 250, shell; 251, opening; 300, tube cap jig; 310, tube cap mounting surface; 311, tube cap mounting part; 320, sleeve hole; 400, tube base jig; 410, tube base mounting surface; 411, tube base mounting part; 500, heating piece; 600, temperature measuring sensor; 700, counterweight column. DETAILED DESCRIPTION

[0044] The following description is provided to disclose the present application so that those skilled in the art can implement the present application. The preferred embodiments in the following description are only examples, and other obvious modifications can be made by those skilled in the art. The basic principles of the present application defined in the following description can be applied to other embodiments, modifications, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present application.

[0045] As shown in Figure 3 and Figure 4 , the packaging jig of the TO sensor comprises:

[0046] The closed assembly 200 comprises a vacuum cavity 210, and a tube cap fixing piece 220 and a tube base lifting piece 230 arranged in the vacuum cavity 210;

[0047] The tube cap jig 300 is located in the vacuum cavity 210 and is fixed by the tube cap fixing piece 220, and the tube cap jig 300 is located above the tube base lifting piece 230;

[0048] The tube base jig 400 is provided with a positioning rod 240, the positioning rod 240 penetrates the tube cap jig 300 and abuts on the tube base lifting piece 230;

[0049] The heating piece 500 is located in the vacuum cavity 210, and the tube cap jig 300 and / or the tube base jig 400 is provided with the heating piece 500.

[0050] The closed assembly 200 provides a vacuum cavity 210 for vacuum welding, and provides vacuum welding conditions for the TO sensor. The tube seat jig 400, the tube cap jig 300 and the tube seat lifter 230 are arranged in the vacuum cavity 210 in a top-to-bottom manner, the tube cap jig 300 is fixed by the tube cap fixing piece 220, and the positioning rod 240 on the tube seat jig 400 penetrates the tube cap jig 300 and abuts on the tube seat lifter 230, so that the tube seat lifter 230 can drive the tube seat jig 400 to move up and down relative to the tube cap jig 300, thereby realizing the approach and departure of the tube seat jig 400 and the tube cap jig 300. At the same time, the positioning rod 240 provides a limit for the up-and-down movement of the tube seat jig 400, thereby ensuring that the tube cap mounting portion 311 on the tube cap jig 300 corresponds one-to-one to the tube seat mounting portion 411 on the tube seat jig 400. It can be seen that the space of the vacuum cavity 210 is reasonably utilized, and the packaging jig is effectively arranged, while meeting the approach and departure of the tube seat jig 400 and the tube cap jig 300.

[0051] As shown in Figure 3 The closed assembly 200 includes a shell 250, and the shell 250 encloses the vacuum cavity 210. The vacuum cavity 210 can be columnar, and of course the vacuum cavity 210 can also be cuboid, conical and the like. The shell 250 has an opening 251, which communicates the vacuum cavity 210 with the outside, and the packaging jig can be arranged in the vacuum cavity 210 through the opening 251. The opening 251 is provided with a cover, and the cover and the opening 251 of the shell 250 are buckled, screwed or the like, and the sealing performance between the two is improved by adding a sealing ring.

[0052] As shown in Figure 1 and Figure 6 The tube cap jig 300 has a tube cap mounting surface 310, and a plurality of tube cap mounting portions 311 are formed on the tube cap mounting surface 310, which are used to place the tube cap 110.

[0053] The tube cap mounting surface 310 of the tube cap jig 300 faces upward, and the tube cap mounting portion 311 can be a groove. When the tube cap 110 is placed in the tube cap mounting portion 311, the welding surface of the tube cap 110 and the tube seat 120 is arranged upward. The number of tube cap mounting portions 311 is multiple, and they are arranged at the middle position of the length direction of the tube cap jig 300. In this embodiment, the plurality of tube cap mounting portions 311 are arranged in a matrix.

[0054] Referring to Figure 6The pipe cap jig 300 is provided with sleeve holes 320 through which the positioning rods 240 pass, and the sleeve holes 320 are located on both sides of the pipe cap jig 300 in the length direction.

[0055] As shown in Figure 1 and Figure 7 , the pipe seat jig 400 has a pipe seat mounting surface 410, and a plurality of pipe seat mounting portions 411 are provided on the pipe seat mounting surface 410 for placing the pipe seat 120.

[0056] The pipe seat mounting surface 410 of the pipe seat jig 400 faces downward and is opposite to the pipe cap mounting surface 310. The pipe seat mounting portions 411 can be grooves or holes, and when the pipe seat 120 is placed in the pipe seat mounting portions 411, the welding surface of the pipe seat 120 is arranged downward.

[0057] Referring to Figure 6 and 7 , the number of pipe seat mounting portions 411 and pipe cap mounting portions 311 is equal and one-to-one correspondence. The positioning rods 240 are located on both sides of the pipe seat jig 400 in the length direction, and the number of sleeve holes 320 on the pipe cap jig 300 is equal and one-to-one correspondence. In this embodiment, the number of positioning rods 240 and sleeve holes 320 is four respectively, which ensures the stability of the upward and downward movement of the pipe seat jig 400, and avoids the situation that the pipe seat mounting portions 411 and the pipe cap mounting portions 311 do not correspond after the pipe seat jig 400 moves.

[0058] As shown in Figure 3 and Figure 5 , the number of pipe cap fixing members 220 is two, and the pipe cap jig 300 is clamped and fixed between the two pipe cap fixing members 220.

[0059] The two pipe cap fixing members 220 are located on both sides of the pipe cap jig 300 in the length direction, and the pipe cap jig 300 can be fixed on the pipe cap fixing members 220 by bolts or other fasteners. The pipe cap fixing member 220 can be a columnar structure, and its length is approximately equal to the width of the pipe cap jig 300, which increases the contact area between the two and improves the connection stability. In addition, the bottom of the pipe cap fixing member 220 can be provided with a motor, a pneumatic cylinder or the like to drive the pipe cap jig 300 to move up and down.

[0060] Referring to Figure 5 , the pipe seat lifting member 230 includes:

[0061] a power member;

[0062] A support plate 231 is connected with the power member, and is located between the power member and the pipe cap jig 300. The positioning rods 240 abut against the support plate 231.

[0063] The power member can be an electric motor, a pneumatic cylinder, or the like. Since the positioning rods 240 of the pipe cap jig 300 pass through the pipe base jig 400 and abut against the support plate 231, the power member drives the support plate 231 to move upward, and the support plate 231 drives the pipe base jig 400 to move upward relative to the pipe cap jig 300, so as to separate the pipe base jig 400 from the pipe cap jig 300. When the power member drives the support plate 231 to move downward, the pipe base jig 400 is lowered until it is in full contact with the pipe cap jig 300.

[0064] With reference to the drawings again, Figure 5 The support plate 231 comprises:

[0065] A support plate 231a is connected with the power member;

[0066] Support blocks 231b are arranged on the support plate 231a, and are used for the positioning rods 240 to abut against.

[0067] The support plate 231a can be made of stainless steel or the like, and the support blocks 231b can be made of resin or the like high-strength material, so as to avoid the support blocks 231b from being abraded by the positioning rods 240 for a long time. Preferably, the support blocks 231b can be screwed on the support plate 231a, so that the support blocks 231b can be replaced.

[0068] Further, the number of the support plates 231a is two, and the two support plates 231a are arranged in a cross manner. Two ends of each of the support plates 231a are respectively provided with the support blocks 231b, i.e., four positioning rods 240 are correspondingly arranged.

[0069] As shown in the drawings, Figure 7 The positioning rods 240 comprise:

[0070] A positioning segment 241 is connected with the pipe base jig 400, and is sleeved in the sleeve hole 320 of the pipe cap jig 300;

[0071] An extension segment 242 is threadedly connected with the positioning segment 241, and abuts against the pipe base lifting member 230.

[0072] The positioning section 241 and the sleeve hole 320 are approximately equal in size, providing positioning effect for the up and down movement of the tube seat jig 400. The extension section 242 can be a screw, and is screwed on the positioning section 241, which is convenient and fast in forming, and low in use cost.

[0073] As shown in Figure 3 The heating element 500 can be a heating electrode, which can be directly fixed on the components to be heated, including the tube cap jig 300 and the tube seat jig 400, by fasteners, providing heat for vacuum welding of the tube cap jig 300 and the tube seat jig 400.

[0074] As shown in Figure 4 The packaging jig of the TO sensor further comprises:

[0075] A temperature measuring sensor 600 is arranged on the tube cap jig 300.

[0076] The temperature measuring sensor 600 is used to measure the temperature of the tube cap jig 300, and cooperates with the heating element 500 to provide a suitable vacuum welding temperature for the sensor.

[0077] As shown in Figure 4 The packaging jig of the TO sensor further comprises:

[0078] A counterweight column 700 is arranged on the tube seat jig 400.

[0079] The counterweight column 700 lifts the weight of the tube seat jig 400, which is conducive to the pressing of the tube seat jig 400 on the tube cap jig 300, facilitating the formation of the TO sensor. The number of the counterweight column 700 is equal to the number of the tube seat mounting portion 411 of the tube cap jig 300, and one-to-one correspondence, that is, the counterweight column 700 exerts pressure on the corresponding tube seat 120.

[0080] As shown in Figure 3 The vacuum cavity 210 of the closed assembly 200 is connected with a vacuum pump and a nitrogen filling instrument respectively. The vacuum pump evacuates the vacuum cavity 210, ensuring that the vacuum cavity 210 can maintain high vacuum degree for a long time, and can improve the sensitivity of the assembled sensor by 100%. The nitrogen blowing instrument is used to fill nitrogen into the vacuum cavity 210, and then to pump out after multiple cycles of filling nitrogen, so as to improve the vacuum level in the cavity.

[0081] The use method of the packaging jig of the TO sensor is as follows:

[0082] The cap 110 is placed in the cap mounting portion 311 of the cap jig 300, and then the solder 130 is placed on the soldering surface of the cap 110 and the socket 120. The solder 130 is annular and is sleeved on the cap 110. The solder can be metal or alloy;

[0083] The socket 120 is placed in the socket mounting portion 411 of the socket jig 400. The socket 120 can be pre-fixed in the socket mounting portion 411. For example, the PIN pin 121 of the socket 120 is inserted into the socket jig 400. When the socket mounting portion 411 of the socket jig 400 is placed downward, the socket 120 will not be separated from the socket mounting portion 411.

[0084] The cap jig 300 and the fixed socket jig 400 are arranged inside the vacuum cavity 210, and the vacuum cavity 210 is closed, including the closure of the cover. The positioning rod 240 on the socket jig 400 penetrates the cap jig 300 and abuts against the socket lifting piece 230. Then, the socket lifting piece 230 drives the socket jig 400 to move downward, so that the socket jig 400 is pressed onto the cap jig 300.

[0085] The vacuum pump is started to suck the vacuum cavity 210 to a set vacuum value. It is recommended to fill nitrogen and then pump several times to improve the vacuum level in the cavity. After reaching the set vacuum value, the heating piece 500 is used for heating, so that the solder is liquefied and filled in the gap between the cap 110 and the socket 120. Then, rapid cooling is performed to solidify the solder, that is, the vacuum welding of the cap 110 and the socket 120 is completed.

[0086] The cover corresponding to the vacuum cavity 210 is removed;

[0087] Since the socket 120 is pre-fixed on the socket mounting portion 411, and the cap 110 and the socket 120 are welded, after the socket lifting piece 230 drives the socket jig 400 to move upward, the cap 110 is separated from the cap jig 300 and remains on the fixed socket jig 400 together with the socket 120. Then, the fixed socket jig 400 is taken out of the vacuum cavity 210. The sensor is discharged and inspected. After passing the inspection, the finished product TO vacuum packaging product is obtained, as shown in Figure 2 .

[0088] In summary, the closed assembly 200 provides a vacuum cavity 210 for vacuum welding, reasonably utilizes the space of the vacuum cavity 210, effectively arranges the packaging jig, and meets the approaching and moving away of the tube base jig 400 and the tube cap jig 300. By utilizing the characteristics that the solder is liquefied at a liquefaction temperature and is solidified at the liquefaction temperature, and by cooperating with the high-vacuum environment provided by the equipment to perform reflow welding, it is possible to process smaller TO can shells, to achieve higher vacuum degree while meeting the bonding strength and air tightness, and to perform batch processing to improve efficiency.

[0089] The above-described embodiments are only used to illustrate the technical ideas and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot be used to limit the patent application range of the present application, that is, any equivalent changes or modifications made according to the disclosed spirit of the present application still fall within the patent range of the present application.

Claims

1. A packaging jig of a TO sensor, characterized by, The application relates to a sealing assembly (200) comprising a vacuum cavity (210), a cap fixing element (220) and a base lifting element (230) arranged in the vacuum cavity (210); a cap jig (300) arranged in the vacuum cavity (210) and fixed by the cap fixing element (220), the cap jig (300) being arranged above the base lifting element (230); a base jig (400) provided with a positioning rod (240), the positioning rod (240) penetrating the cap jig (300) and abutting against the base lifting element (230); and a heating element (500) arranged on the cap jig (300) and / or the base jig (400) and arranged in the vacuum cavity (210). The number of the cap fixing elements (220) is two, and the cap jig (300) is clamped and fixed between the two cap fixing elements (220). The base lifting element (230) comprises a power element, a support plate (231) connected with the power element, the support plate (231) being arranged between the power element and the cap jig (300), and the positioning rod (240) abutting against the support plate (231). The support plate (231) comprises a support plate (231a) connected with the power element, and a support block (231b) arranged on the support plate (231a) and used for abutting against the positioning rod (240). The number of the support plates (231a) is two, and the two support plates (231a) are arranged in a cross mode, and each of the two ends of the support plate (231a) is provided with the support block (231b).

2. The packaging jig of a TO sensor according to claim 1, wherein The positioning rod (240) comprises a positioning section (241) connected with the base jig (400) and sleeved in a sleeve hole (320) of the cap jig (300), and an extension section (242) threadedly connected with the positioning section (241) and abutting against the base lifting element (230).

3. The packaging jig of a TO sensor according to claim 1, wherein The cap jig (300) is provided with a cap mounting surface (310) provided with a plurality of cap mounting portions (311); the base jig (400) is provided with a base mounting surface (410) provided with a plurality of base mounting portions (411); and the base mounting surface (410) is opposite to the cap mounting surface (310), and the cap mounting portions (311) and the base mounting portions (411) are in one-to-one correspondence. The application further comprises a temperature measuring sensor (600) arranged on the cap jig (300). The application further comprises 4. The packaging jig of a TO sensor according to claim 3, wherein ​ ​ ​ 5. The packaging jig of a TO sensor according to claim 4, wherein ​ 6. The packaging jig of a TO sensor according to claim 1, wherein ​ ​ ​ 7. The packaging jig of a TO sensor according to claim 1, wherein ​ ​ ​ 8. The packaging jig of a TO sensor according to claim 1, wherein ​ ​ 9. The packaging jig of a TO sensor according to claim 1, wherein, ​ A counterweight column (700) is arranged on the pipe seat jig (400).

10. The packaging jig of a TO sensor according to claim 1, wherein, The vacuum cavity (210) of the closed assembly (200) is respectively connected with a vacuum pump and a nitrogen filling instrument.

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