A welding jig for a seal ring

Abstract

The utility model discloses a kind of welding jigs of sealing compression ring, the welding jig includes bottom plate, support, drive fixed base, driver and compression assembly;Support and drive fixed base are fixedly assembled on bottom plate, driver is assembled on drive fixed base, one end of compression assembly is connected with driver through connecting rod, the other end of compression assembly extends to the top of support;Groove is equipped on support, and groove is used to place sensor;Compression assembly is equipped with compression plate in one end close to support;Welding through-hole is formed in compression plate;Multiple protrusions extending to the direction of welding through-hole center are equipped in welding through-hole.The welding jig described above, the compression plate set in the front end of compression assembly is driven by driver to tightly compress sensor, and protrusion side channel in welding through-hole is shot into high-energy laser to weld sealing compression ring, greatly improve the accuracy of sealing compression ring welding, and ensure that the sealing of welding is good.

Description

Technical Field

[0001] This utility model relates to the field of processing fixture technology, and in particular to a welding fixture for a sealing pressure ring. Background Technology

[0002] To transmit minute deformations, high-precision sensors require a ceramic plate sealed and fixed within a cavity to form an oil chamber. This oil chamber transmits the vibrational deformation of the diaphragm to the sensing device, allowing the device to detect the deformation and generate a signal. Current techniques typically use laser welding equipment to weld a sealing ring onto the ceramic plate, thus sealing the oil chamber. However, this method is inefficient and cannot accurately weld specific points on the sealing ring, resulting in poor sealing. Therefore, existing welding equipment suffers from poor sealing performance. Summary of the Invention

[0003] The present invention provides a welding fixture for a sealing pressure ring, which aims to solve the problem of poor welding sealing in existing welding equipment.

[0004] This utility model discloses a welding fixture for a sealing pressure ring, wherein the welding fixture includes a base plate, a support, a drive fixing seat, a drive driver, and a pressing assembly;

[0005] The support and the drive fixing seat are both fixedly assembled on the base plate, the driver is assembled on the drive fixing seat, one end of the pressing assembly is connected to the driver through a connecting rod, and the other end of the pressing assembly extends to the top of the support;

[0006] The support has a groove for placing a sensor; the pressing assembly has a pressing plate at one end near the support; the pressing plate has a welding through hole; the welding through hole has multiple protrusions extending toward the center of the welding through hole.

[0007] The welding fixture for the sealing ring includes an inwardly recessed welding groove on the end face of the pressing plate away from the support; and a welding through hole is provided on the bottom surface of the welding groove.

[0008] The welding fixture for the sealing ring, wherein the protrusions in the welding through hole are evenly arranged along the circumference of the welding through hole.

[0009] The welding fixture for the sealing ring, wherein the protrusion is a triangular protrusion, and the triangular protrusion divides the edge of the welding through hole to form multiple U-shaped through grooves.

[0010] The welding fixture for the sealing ring is provided with 3-10 protrusions in the welding through hole.

[0011] The welding fixture for the sealing ring, wherein the sidewall of the welding groove is an inclined sidewall, and the opening size of the welding groove is larger than the bottom size of the welding groove.

[0012] The welding fixture for the sealing ring, wherein the depth of the welding groove is greater than the depth of the welding through hole.

[0013] The welding fixture for the sealing ring, wherein the groove is circular and the diameter of the welding through hole is smaller than the diameter of the groove.

[0014] The welding fixture for the sealing ring, wherein an annular support is provided in the groove.

[0015] The welding fixture for the sealing ring, wherein the top of the support is vertically cut on one side facing the pressing assembly to form a clearance side.

[0016] This utility model discloses a welding fixture for a sealing ring, comprising a base plate, a support, a drive fixing seat, a driver, and a pressing assembly. The support and drive fixing seat are fixedly mounted on the base plate, the driver is mounted on the drive fixing seat, one end of the pressing assembly is connected to the driver via a connecting rod, and the other end of the pressing assembly extends above the support. The support has a groove for placing a sensor. A pressing plate is located at the end of the pressing assembly near the support. A welding through-hole is formed on the pressing plate. Multiple protrusions extending towards the center of the welding through-hole are located within the welding through-hole. This welding fixture, through the driver driving the pressing plate at the front end of the pressing assembly, tightly presses the sensor, and high-energy laser light is injected through the through-groove on the side of the protrusions in the welding through-hole to weld the sealing ring, significantly improving the accuracy of the sealing ring welding and ensuring good sealing performance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 An overall structural diagram of the welding fixture for the sealing ring provided in this embodiment of the utility model;

[0019] Figure 2 A partial structural diagram of the welding fixture for the sealing ring provided in an embodiment of this utility model;

[0020] Figure 3 Another partial structural diagram of the welding fixture for the sealing ring provided in this embodiment of the utility model;

[0021] Figure 4 Another partial structural diagram of the welding fixture for the sealing ring provided in this embodiment of the utility model;

[0022] Figure 5 An exploded view of the sensor provided in an embodiment of this utility model.

[0023] Reference numerals: 1. Base plate; 2. Support; 3. Drive mounting base; 31. Driver; 4. Pressing assembly; 41. Connecting rod; 21. Groove; 22. Sensor; 42. Pressing plate; 421. Welding through hole; 422. Protrusion; 423. Welding groove; 424. U-shaped through groove; 23. Annular support; 24. Clear side; 221. Sensor base; 222. Cavity; 223. Ceramic plate; 224. Sealing ring; 225. Connecting pin; 226. Sealing metal ball. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0026] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0027] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0028] This utility model discloses a welding fixture for a sealing pressure ring, such as Figure 1As shown, the welding fixture includes a base plate 1, a support 2, a drive fixing seat 3, a driver 31, and a pressing assembly 4; the support 2 and the drive fixing seat 3 are both fixedly mounted on the base plate 1, the driver 31 is mounted on the drive fixing seat 3, one end of the pressing assembly 4 is connected to the driver 31 via a connecting rod 41, and the other end of the pressing assembly 4 extends above the support 2. Figure 2 and Figure 4 As shown, the support 2 is provided with a groove 21 for placing the sensor 22; the pressing assembly 4 is provided with a pressing plate 42 at one end near the support 2; the pressing plate 42 is provided with a welding through hole 421; the welding through hole 421 is provided with a plurality of protrusions 422 extending toward the center of the welding through hole 421.

[0029] The structure of the sensor 22 to be welded in this application is as follows: Figure 5 As shown, the sensor 22 includes a sensor base 221, a ceramic plate 223, and a sealing ring 224. The sensor base 221 has a cavity 222. A sensing chip is mounted on the side of the ceramic plate 223 facing the cavity 222. A connecting pin 225 passes through the ceramic plate 223 and is electrically connected to the sensing chip. The sealing ring 224 is located on the side of the ceramic plate 223 facing away from the cavity 222. The sealing ring 224 presses and fixes the ceramic plate 223 within the cavity 222, thus sealing the cavity and forming an oil chamber. The oil in the oil chamber transmits the subtle vibrations sensed by the diaphragm on the sensor base 221 to the sensing chip. The sensing chip senses the subtle vibrations and acquires the signal, which is then transmitted outward via the connecting pin 225. The ceramic plate 223 has a through hole. After the sealing ring 224 is tightly welded to the side wall of the cavity 222, oil can be injected into the oil cavity through the through hole of the ceramic plate 223. Then, the through hole of the ceramic plate 223 is sealed by the sealing metal ball 226.

[0030] Welding the sealing ring 224 to the sidewall of the cavity 222 requires the use of the welding fixture disclosed in this application embodiment. The unwelded sensor 22 can be placed in the groove 21 provided on the support 2, with the sensor base 221 at the bottom, the ceramic plate 223 in the cavity 222 of the sensor base 221, and the sealing ring 224 on top of the ceramic plate 223. When the driver 31 operates, it drives the pressing assembly 4 downwards via the connecting rod 41. At this time, the pressing plate 42 at the front end of the pressing assembly 4 presses the sensor 22 placed on the support 2. The application effect is as follows: Figure 3As shown. The protrusion 422 in the welding through hole 421 is used to press the sealing ring 224 onto the sensor base 221. The through groove on the side of the protrusion 422 is used to inject high-energy laser. The high-energy laser injected through the through groove welds the sealing ring 224 to the side wall of the cavity 222, thereby achieving a tight weld between the sealing ring 224 and the sensor base 221 under external pressure, which greatly improves the sealing performance of the weld.

[0031] In a more specific embodiment, the end face of the pressing plate 42 away from the support 2 is provided with an inwardly recessed welding groove 423; the bottom surface of the welding groove 423 is provided with a welding through hole 421. Specifically, the protrusions 422 in the welding through hole 421 are evenly arranged along the circumference of the welding through hole 421. Among them, the protrusions 422 are triangular protrusions 422, and the triangular protrusions 422 divide the edge of the welding through hole 421 to form a plurality of U-shaped through grooves 424.

[0032] Specifically, a welding groove 423 can be provided on the pressing plate 42, and a welding through hole 421 can be provided on the bottom surface of the welding groove 423. This arrangement facilitates the docking of the laser welding equipment with the welding through hole 421, improving the accuracy of the laser emission of the laser welding equipment. Furthermore, protrusions 422 can be evenly distributed along the circumference of the welding through hole 421. The protrusions 422 can also be further designed as triangular protrusions, which divide the edge of the welding through hole 421 into multiple corresponding U-shaped through grooves 424. The number of triangular protrusions 422 is equal to the number of U-shaped through grooves 424. The specific structure is as follows: Figure 2 As shown.

[0033] In a more specific embodiment, 3-10 protrusions 422 are provided within the welding through hole 421. Specifically, the sidewall of the welding groove 423 is an inclined sidewall, and the opening size of the welding groove 423 is larger than the bottom surface size of the welding groove 423. Furthermore, the depth of the welding groove 423 is greater than the depth of the welding through hole 421.

[0034] Furthermore, the welding through hole 421 can be configured to include 3-10 protrusions 422. In a specific embodiment of this application, 6 protrusions 422 are provided in the welding through hole 421. In other embodiments, more or fewer protrusions 422 may be provided. To further facilitate the docking of the laser welding equipment with the welding through hole 421, the sidewall of the welding groove 423 can be configured as an inclined sidewall, as shown in the specific structure. Figure 2As shown, the opening size of the welding groove 423 is larger than its bottom surface size. In a specific embodiment, the bottom diameter of the welding groove 423 can be set to 0.4-0.75 times its opening diameter. Furthermore, to facilitate welding operations, the depth of the welding groove 423 can be set to be greater than the depth of the welding through hole 421.

[0035] In a more specific embodiment, the groove 21 is circular, and the diameter of the welding through hole 421 is smaller than the diameter of the groove 21. Specifically, an annular support 23 is provided inside the groove 21. The top of the support 2 is vertically cut on one side facing the pressing assembly 4 to form a clearance side 24.

[0036] Specifically, the groove 21 can be circular, thus matching the shape of the sensor 22. The diameter of the welding through-hole 421 can be smaller than the diameter of the groove 21 to ensure that the welding laser does not irradiate the outer wall of the sensor 22, preventing damage. Furthermore, to securely fix the sensor 22, an annular support 23 can be provided within the groove 21, the specific structure of which is as follows... Figure 4 As shown. Specifically, the diameter of the circle formed by the front ends of each protrusion 422 can be set to be less than or equal to the inner diameter of the sealing ring 224, as shown in the specific structure. Figure 3 As shown, Figure 3 In one embodiment, the diameter of the circle formed by the front ends of each protrusion 422 is equal to the inner diameter of the sealing ring 224; in another embodiment, the diameter of the circle formed by the front ends of each protrusion 422 may be smaller than the inner diameter of the sealing ring 224.

[0037] Furthermore, to prevent the support 2 from interfering with the vertical movement of the pressing plate 42, a clearance side 24 can be provided on the top side of the support 2 facing the pressing assembly 4. The clearance side 24 is formed by vertical cutting, and the specific structure is as follows: Figure 2 As shown.

[0038] The present invention discloses a welding fixture for a sealing ring 224, which includes a base plate 1, a support 2, a drive fixing seat 3, a driver 31, and a pressing assembly 4. The support 2 and the drive fixing seat 3 are both fixedly mounted on the base plate 1, the driver 31 is mounted on the drive fixing seat 3, one end of the pressing assembly 4 is connected to the driver 31 through a connecting rod 41, and the other end of the pressing assembly 4 extends above the support 2. The support 2 is provided with a groove 21 for placing a sensor 22. The pressing assembly 4 is provided with a pressing plate 42 at one end near the support 2. The pressing plate 42 is provided with a welding through hole 421. The welding through hole 421 is provided with a plurality of protrusions 422 extending toward the center of the welding through hole 421. The aforementioned welding fixture uses a driver 31 to drive a pressing plate 42 at the front end of the pressing assembly 4 to press the sensor 22 tightly. A high-energy laser is then injected through the through groove on the side of the protrusion 422 inside the welding through hole 421 to weld the sealing ring 224, which greatly improves the accuracy of the welding of the sealing ring 224 and ensures good sealing performance.

[0039] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A welding fixture for a sealing pressure ring, characterized in that, The welding fixture includes a base plate, a support, a drive fixing seat, a driver, and a pressing assembly; The support and the drive fixing seat are both fixedly assembled on the base plate, the driver is assembled on the drive fixing seat, one end of the pressing assembly is connected to the driver through a connecting rod, and the other end of the pressing assembly extends to the top of the support; The support has a groove for placing a sensor; the pressing assembly has a pressing plate at one end near the support; the pressing plate has a welding through hole; the welding through hole has multiple protrusions extending toward the center of the welding through hole.

2. The welding fixture for the sealing ring according to claim 1, characterized in that, The end face of the pressing plate away from the support is provided with an inwardly recessed welding groove; the bottom surface of the welding groove is provided with the welding through hole.

3. The welding fixture for the sealing ring according to claim 2, characterized in that, The protrusions inside the welding through hole are evenly arranged along the circumference of the welding through hole.

4. The welding fixture for the sealing ring according to claim 3, characterized in that, The protrusion is a triangular protrusion, which divides the edge of the welding through hole into multiple U-shaped through grooves.

5. The welding fixture for the sealing ring according to claim 4, characterized in that, The welding through hole is provided with 3-10 protrusions.

6. The welding fixture for the sealing ring according to any one of claims 2-5, characterized in that, The sidewall of the welding groove is an inclined sidewall, and the opening size of the welding groove is larger than the bottom size of the welding groove.

7. The welding fixture for the sealing ring according to claim 6, characterized in that, The depth of the welding groove is greater than the depth of the welding through hole.

8. The welding fixture for the sealing ring according to claim 1, characterized in that, The groove is circular, and the diameter of the welding through hole is smaller than the diameter of the groove.

9. The welding fixture for the sealing ring according to claim 8, characterized in that, The groove is provided with an annular support.

10. The welding fixture for the sealing ring according to claim 9, characterized in that, The top of the support is vertically cut to one side facing the pressing assembly to form a clearance side.

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