A welding device for pressure sensor production and processing

Abstract

The application provides a welding device for pressure sensor production and processing, and relates to the technical field of pressure sensor production. The device comprises a base, a positioning seat, a clamping mechanism and a linkage protection mechanism. The clamping mechanism comprises an eccentric wheel with a handle, a transmission arm, a transmission frame and a pressing block. The eccentric wheel is hinged to the transmission arm and abuts against a fulcrum bolt on the base. The middle section of the transmission arm is hinged to a support frame. The lower end of the transmission frame is connected to the pressing block through an elastic telescopic rod, and the upper end is movably connected to the transmission arm. When the handle is pressed down, the transmission frame is driven to press down and clamp the workpiece between the pressing block and the positioning seat. The eccentric wheel is self-locked after passing the dead point. The linkage protection mechanism comprises an air cylinder with a piston and an air guide pipe. The piston rod is connected to the transmission frame. When the transmission frame moves downward, the piston rod moves downward synchronously. Compressed air is sprayed from the nozzle through the air guide pipe to form a sweeping air flow. The device automatically completes the sweeping of the welding area while clamping the workpiece, without the need for an additional power source, simplifying the operation and improving the welding quality.

Description

Technical Field

[0001] This invention relates to the field of pressure sensor manufacturing technology, specifically to a welding apparatus for pressure sensor manufacturing and processing. Background Technology

[0002] As a key sensing component in industrial automation and automotive electronics, the manufacturing quality of pressure sensors directly affects the measurement accuracy of the system. In the pressure sensor production process, sealing welding is a core process that determines the long-term stability of the sensor; the welding quality directly affects the sensor's compressive strength and sealing performance.

[0003] Most existing welding fixtures can only fix the workpiece. However, before welding, the surface of the workpiece to be welded often has dust or debris attached, which will directly affect the welding quality if not effectively removed. Traditional methods require an additional independent air blowing device or manual cleaning, which not only requires an additional power source but also increases the workload of the operators. To address this, the present invention proposes a welding device for the production and processing of pressure sensors. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a welding device for the production and processing of pressure sensors. By simultaneously clamping the workpiece, the device blows away dust and debris from the welding area, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A welding apparatus for manufacturing and processing pressure sensors includes: a base; a positioning seat disposed on the base for supporting and positioning the pressure sensor workpiece; a clamping mechanism including an eccentric wheel with a handle, a transmission arm, a transmission frame, and a clamping block; the eccentric wheel is hinged to one end of the transmission arm via an eccentric shaft; a fulcrum bolt is provided on the support platform of the base, and the eccentric wheel abuts against the fulcrum bolt; the middle section of the transmission arm is hinged to the support frame disposed on the support platform; the lower end of the transmission frame is connected to the clamping block via an elastic telescopic rod, and the upper end is away from the transmission arm and away from the eccentric wheel. One end of the mandrel is movably connected; when the handle is pressed down, the drive arm swings, thereby driving the drive frame and pressure block to move down, clamping the workpiece between the pressure block and the positioning seat, and when the eccentric wheel passes the dead point position, the clamping position is self-locked; the linkage protection mechanism includes an air cylinder with an internal piston and an air guide pipe. The air cylinder is set on the side of the support platform, and the piston rod of the piston is linked with the drive frame; when the drive frame moves down, it drives the piston to move down synchronously, and compressed air is sprayed out from the nozzle through the air guide pipe to form a blowing airflow on the welding area of ​​the workpiece.

[0006] Preferably, a sliding column is fixedly provided at the end of the transmission arm away from the eccentric wheel, and a bracket is fixedly provided at the upper end of the transmission frame. The bracket has a horizontally extending sliding opening, and the sliding column is slidably disposed in the sliding opening; the piston rod of the piston is fixed to the bottom of the bracket.

[0007] Preferably, the pressure block has a C-shaped structure, with two side legs for contacting the edge of the upper surface of the workpiece, and the hollow area in the middle corresponds to the welding position of the workpiece.

[0008] Preferably, the nozzle is located at the edge of the hollow area of ​​the pressure block, and its air outlet direction is towards the welding area of ​​the workpiece; the nozzle outlet end is duckbill shaped.

[0009] Preferably, the air cylinder is equipped with an inlet check valve and an exhaust check valve, with the exhaust check valve connected to the air guide pipe.

[0010] Preferably, the device further includes an auxiliary cooling mechanism, which includes a liquid storage block disposed at the edge of the hollow area of ​​the pressing block. The bottom side of the liquid storage block is provided with a capillary groove communicating with its internal cavity, and the outlet end of the capillary groove is located at the edge of the hollow area of ​​the pressing block.

[0011] Preferably, the liquid storage block is fitted into the slot at the edge of the hollow area of ​​the insert and the pressure block, and the two are fixed and limited by a pin.

[0012] Preferably, the end of the liquid storage block opposite to the nozzle is an inclined surface, and the opening direction of the inclined surface is away from the center of the pressure block.

[0013] Preferably, a horizontal baffle is fixedly provided above the inclined plane.

[0014] Preferably, a section of the air guide tube is embedded inside the pressure block.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a welding apparatus for the production and processing of pressure sensors. During the process of positioning and locking the pressure sensor workpiece by pressing down the operating handle to drive the clamping mechanism, the downward movement of the transmission frame synchronously drives the piston movement inside the air cylinder, thereby automatically generating compressed airflow which is sprayed through the nozzle onto the workpiece's welding area. This design eliminates the need for an additional power source or separate manual cleaning steps, allowing for the simultaneous cleaning of dust and debris from the welding area while the workpiece is being clamped. This effectively simplifies the operation process, reduces the burden on operators, and ensures the cleanliness of the workpiece surface before welding, laying the foundation for improved welding quality.

[0016] This invention provides a welding device for pressure sensor manufacturing, which ensures stable clamping while providing multiple layers of protection for the welding area through structural optimization. The clamping block adopts a C-shaped hollow design, ensuring reliable contact with the workpiece edge while reserving space for welding operations. Combined with nozzles located at the hollow edge and a capillary cooling structure, the device can simultaneously perform localized cooling during welding. In particular, the capillary groove utilizes capillary action to exude coolant while clamped, allowing for targeted cooling of the welding area, helping to reduce heat-affected zones and improve welding stability and yield.

[0017] This invention provides a welding apparatus for pressure sensor manufacturing. By setting the end of the liquid storage block opposite the nozzle as an inclined plane, when the airflow from the nozzle blows away debris from the welding area, the debris impacts the inclined plane and is discharged to the outside of the pressure block and the workpiece, preventing debris from accumulating on the workpiece surface or bouncing back into the welding area. A horizontal baffle above the inclined plane further prevents debris from bouncing vertically, ensuring a clean welding environment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the clamping mechanism of the present invention; Figure 3 This is a schematic diagram of the linkage structure between the transmission frame and the pressure block of the present invention; Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 This is a schematic diagram of the linkage protection mechanism of the present invention; Figure 6 This is a schematic diagram showing the nozzle position and structure of the present invention; Figure 7 This is a schematic diagram of the auxiliary cooling mechanism of the present invention; Figure 8 This is a schematic diagram of the connection between the liquid storage block and the pressure block of the present invention; Figure 9 This is a schematic diagram of the bottom structure of the liquid storage block and the pressure block of the present invention.

[0019] Drawing number explanations: 1. Base; 2. Positioning seat; 3. Clamping mechanism; 4. Linkage protection mechanism; 5. Handle; 6. Eccentric wheel; 7. Transmission arm; 8. Transmission frame; 9. Pressure block; 10. Eccentric shaft; 11. Support platform; 12. Pivot bolt; 13. Support frame; 14. Elastic telescopic rod; 15. Piston; 16. Air cylinder; 17. Air guide pipe; 18. Piston rod; 19. Sliding column; 20. Bracket; 21. Sliding port; 22. Nozzle; 23. Inlet check valve; 24. Exhaust check valve; 25. Auxiliary cooling mechanism; 26. Liquid storage block; 27. Capillary groove; 28. Insert; 29. ​​Insertion port; 30. Pin; 31. Inclined surface; 32. Horizontal baffle; 33. Texture. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] The following description is intended to disclose the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0022] Example 1: Please refer to Figure 1 - Figure 9 A welding apparatus for manufacturing and processing pressure sensors includes a base 1, on which a support platform 11 is fixedly mounted. A positioning seat 2 for supporting and positioning the pressure sensor workpiece is provided on the support platform 11. The base 1 also includes a clamping mechanism 3 and a linkage protection mechanism 4. A single operation of a handle 5 enables the clamping and locking of the workpiece and automatic blowing of the welding area.

[0023] In this design, the clamping mechanism 3 includes an eccentric wheel 6 with a handle 5, a transmission arm 7, a transmission frame 8, and a pressure block 9. The eccentric wheel 6 is hinged to one end of the transmission arm 7 via an eccentric shaft 10. A fulcrum bolt 12 is threaded onto the support platform 11, and the outer edge of the eccentric wheel 6 abuts against the fulcrum bolt 12 to form a swing fulcrum. The middle section of the transmission arm 7 is hinged to a support frame 13 fixedly mounted on the support platform 11 via a rotating shaft, making the transmission arm 7 a lever structure. The lower end of the transmission frame 8 is connected to the pressure block 9 via an elastic telescopic rod 14, and a bracket 20 is fixedly mounted on the upper end of the transmission frame 8. A horizontally extending sliding opening 21 is provided inside the bracket 20. A sliding column 19 is fixedly mounted on the end of the transmission arm 7 away from the eccentric wheel 6, and the sliding column 19 slides within the sliding opening 21. When the operator presses down on handle 5, eccentric wheel 6 rotates around eccentric shaft 10. Since eccentric wheel 6 abuts against fulcrum bolt 12, it pushes one end of transmission arm 7 upwards, while the other end presses down on transmission frame 8 via sliding column 19. Transmission frame 8 drives pressure block 9 to move towards positioning seat 2 until pressure block 9 contacts the upper surface of the workpiece. Continuing to press down handle 5, eccentric wheel 6 passes its dead center position. Utilizing the self-locking characteristic of eccentric wheel 6, clamping mechanism 3 is locked in the clamping state. At this point, even if external force is removed, pressure block 9 can still maintain stable pressure on the workpiece, ensuring that the workpiece will not shift during welding.

[0024] It should be noted that the design of the elastic telescopic rod 14 allows the transmission frame 8 to continue to move down a certain distance after the pressure block 9 contacts the workpiece, providing power for subsequent linkage purging, while avoiding excessive rigid impact of the pressure block 9 on the workpiece, thus playing a buffering and protective role.

[0025] In this design, the linkage protection mechanism 4 includes an air cylinder 16 with an internal piston 15 and an air guide pipe 17. The air cylinder 16 is fixedly mounted on the side of the support platform 11. A piston rod 18 passes through the top of the air cylinder 16, with its bottom fixedly connected to the piston 15 and its top fixedly connected to the bottom of the bracket 20. When the transmission frame 8 moves downward, the bracket 20 drives the piston rod 18 and piston 15 to move downward synchronously, compressing the air inside the air cylinder 16. The compressed air is then ejected from the nozzle 22 through the air guide pipe 17. The outlet direction of the nozzle 22 is directly facing the welding area of ​​the workpiece, forming a purging airflow to clean the dust and debris from the area to be welded. When the handle 5 is lifted and the eccentric wheel 6 exits the self-locking position, the elastic telescopic rod 14 resets, pushing the transmission frame 8 upward and simultaneously driving the piston 15 upward and reset. A negative pressure is formed inside the air cylinder 16, and external air is replenished into the air cylinder 16 through the air inlet, storing gas for the next clamping action. This linkage design achieves automated clamping and blowing, eliminating the need for additional power sources or manual cleaning and simplifying the operation process.

[0026] It should be noted that the air cylinder 16 is equipped with an inlet check valve 23 and an exhaust check valve 24. The exhaust check valve 24 is connected to the air guide pipe 17, and the inlet check valve 23 is connected to the air inlet. When the piston 15 compresses air, the exhaust check valve 24 opens, and airflow enters the air guide pipe 17. When the piston 15 moves upward and returns to its original position, the exhaust check valve 24 closes, and the inlet check valve 23 opens, allowing external air to enter the air cylinder 16. This one-way valve structure ensures unidirectional airflow and maintains a stable purging pressure.

[0027] In this plan, such as Figure 1 and Figure 7 As shown, the clamping block 9 is designed with a C-shaped structure. Its two side legs are used to contact the edge of the upper surface of the workpiece, while the hollow area in the middle corresponds to the welding position of the workpiece. This design not only ensures the stable clamping of the workpiece by the clamping block 9, but also reserves space for welding operations, avoids the clamping block 9 from obstructing the welding area, and facilitates the direct action of the welding torch or laser head on the part to be welded.

[0028] In this plan, such as Figure 6 As shown, nozzle 22 is located at the edge of the hollow area of ​​pressure block 9, with its air outlet direction facing the welding area of ​​the workpiece. The outlet end of nozzle 22 adopts a duckbill-shaped design, which allows the airflow to diffuse in a flat shape, expanding the cleaning coverage area while maintaining the concentration of the airflow and improving the cleaning effect.

[0029] It should be noted that a section of the air guide tube 17 is embedded inside the pressure block 9. This design reduces the risk of interference and entanglement of external pipelines, making the overall structure of the device more compact.

[0030] like Figure 7 and Figure 8As shown, as a further optimization of the present invention, the device also includes an auxiliary cooling mechanism 25. The auxiliary cooling mechanism 25 includes a liquid storage block 26 disposed at the edge of the hollow area of ​​the pressure block 9, and a capillary groove 27 communicating with the internal cavity of the liquid storage block 26. The outlet end of the capillary groove 27 is located at the edge of the hollow area of ​​the pressure block 9. When the pressure block 9 clamps the workpiece, the coolant in the liquid storage block 26 slowly seeps out to the outlet end of the capillary groove 27 under capillary action, providing localized cooling to the welding area, effectively reducing the heat impact of welding, and reducing the impact of thermal stress on sensor performance.

[0031] In this design, the reservoir block 26 is fitted into the slot 29 at the edge of the hollow area of ​​the pressure block 9 via the insert 28, and is fixed and limited by the pin 30. This detachable structure facilitates the installation and replacement of the reservoir block 26. When the coolant is depleted, the operator can easily remove the reservoir block 26 for replenishment or replacement without replacing the entire pressure block 9, thus reducing maintenance costs.

[0032] It should be noted that the end of the liquid storage block 26 opposite to the nozzle 22 is set as an inclined surface 31, and the opening direction of the inclined surface 31 is away from the center of the pressure block 9. When the airflow from the nozzle 22 blows away the debris in the welding area, the debris impacts the inclined surface 31 under the action of the airflow, and is discharged along the inclined surface 31 to the outside of the pressure block 9 and the workpiece, effectively preventing the debris from accumulating on the surface of the workpiece or rebounding back to the welding area.

[0033] Furthermore, a horizontal baffle 32 is fixedly installed above the inclined plane 31 to prevent debris from bouncing vertically after impacting the inclined plane 31. This baffle structure can block debris from splashing upwards, ensuring that debris is smoothly discharged along the inclined plane 31, preventing it from falling back into the welding area or adhering to the workpiece surface, thus further ensuring the cleanliness and stability of the welding process.

[0034] In this plan, such as Figure 9 As shown, the surface of the support leg of the pressure block 9 that contacts the workpiece is provided with high-temperature resistant and anti-slip texture 33. This design increases the friction between the pressure block 9 and the workpiece, ensuring that the workpiece will not shift due to vibration or heat during the welding process. At the same time, the high-temperature resistance ensures that the texture 33 will not fail under the high-temperature welding environment.

[0035] It should be noted that the entire operation process of the device is as follows: The operator places the pressure sensor workpiece on the positioning seat 2 and then presses down the handle 5. During the pressing down of the handle 5, the eccentric wheel 6 drives the transmission arm 7 to swing. The transmission arm 7, through the cooperation of the sliding column 19 and the sliding port 21, drives the transmission frame 8 to move down. The transmission frame 8 pushes the pressure block 9 down through the elastic telescopic rod 14 to clamp the workpiece. At the same time as the transmission frame 8 moves down, the piston rod 18 drives the piston 15 to move down, compressing the air in the air cylinder 16. The compressed air is sprayed out from the nozzle 22 through the air guide pipe 17 to blow clean the welding area of ​​the workpiece. When the pressure block 9 contacts the workpiece, the elastic telescopic rod 14 begins to compress, the transmission frame 8 continues to move down, and the piston 15 also continues to press down, further increasing the air pressure in the air cylinder 16 to ensure the continuity of the blowing airflow. When the eccentric wheel 6 passes the dead point position, the clamping mechanism 3 self-locks. At this time, the welding area has been cleaned, and the operator can start the welding operation. During welding, coolant continuously seeps from the capillary groove 27 of the auxiliary cooling mechanism 25 to locally cool the welding area. After welding is completed, the handle 5 is lifted upwards, the eccentric wheel 6 disengages from the self-locking position, the elastic telescopic rod 14 resets, pushing the transmission frame 8 and the pressure block 9 upwards to release the workpiece. At the same time, the piston 15 moves upwards to reset, and the air cylinder 16 replenishes gas through the air inlet check valve 23 to prepare for the next operation.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] As a preferred embodiment, to ensure reliable self-locking of the eccentric wheel 6 and appropriate operating force, the ratio e / D of the eccentricity e to the outer diameter D of the eccentric wheel 6 can be set to 0.05 to 0.07. This ratio range is based on the friction angle self-locking principle, and the value of e / D satisfies... (in The coefficient of friction between the eccentric wheel 6 and the fulcrum bolt 12 is usually taken as... This ensures that the handle 5 has a stable self-locking friction force after it has passed the dead point.

[0038] The spring stiffness K and maximum compression of the elastic telescopic rod 14 The clamping force that the workpiece material can withstand can be conventionally selected, typically ranging from 20 to 100 N. Preferably, K = 20 to 40 N / mm. This achieves flexible buffering and continuous compression.

[0039] The cylinder diameter of the air cylinder 16 and the stroke of the piston 15 are set according to the required purging air volume, preferably with a cylinder diameter of 25-35 mm and a stroke of 15-25 mm. Under these preferred parameters, the single exhaust volume of the air cylinder 16 is approximately 7.4-24.0 mL, and the outlet airflow velocity is approximately 8-15 m / s. The purging airflow at this velocity can effectively remove particles of a certain size. The cleaning effect removes dust particles and metal debris commonly found in welding areas, meeting the surface cleanliness requirements for pressure sensor workpieces before welding (surface particle residual diameter). ).

[0040] The coolant filled in the reservoir 26 is a deionized water-based coolant (main components: 85-90 wt% deionized water, 5-10 wt% ethylene glycol, 1-3 wt% water-based rust inhibitor). This coolant has good volatility, can quickly evaporate and remove heat under high-temperature welding conditions, and leaves no residue, thus preventing contamination of the sensor workpiece. The cross-sectional dimensions of the capillary groove 27 are based on the capillary force formula. Design, including: The surface tension coefficient of the coolant (for deionized water-based coolant at 20°C) ), The contact angle between the coolant and the capillary wall ( ), For coolant density ( g is the acceleration due to gravity ( ), where r is the equivalent hydraulic radius of the capillary channel. Take... When r = 0.15 mm, the capillary rise height h ≈ 2 × 0.072 × cos30° / (1000 × 9.8 × 0.00015) ≈ 0.085 m, or about 85 mm, which is much larger than the height of the capillary groove itself (about 5 to 8 mm), ensuring that the coolant can overcome gravity and continuously seep out under capillary action. The preferred capillary groove width is 0.3 to 0.6 mm and the depth is 0.15 to 0.3 mm to ensure that the coolant can continuously and stably seep out under clamping conditions.

[0041] It should be noted that the above parameters are all optional specific methods for implementing the present invention. After reading the structural scheme of this application, those skilled in the art can determine the above conventional parameters without creative effort by combining common knowledge in the field of mechanical design. Their specific values ​​do not constitute a limitation on the scope of protection of this application.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended technical solutions and their equivalents.

Claims

1. A welding apparatus for manufacturing and processing pressure sensors, characterized in that, include: Base (1); The positioning seat (2) set on the base (1) is used to support and position the pressure sensor workpiece; The clamping mechanism (3) includes an eccentric wheel (6) with a handle (5), a transmission arm (7), a transmission frame (8), and a pressure block (9). The eccentric wheel (6) is hinged to one end of the transmission arm (7) via an eccentric shaft (10). A fulcrum bolt (12) is provided on the support platform (11) of the base (1), and the eccentric wheel (6) abuts against the fulcrum bolt (12). The middle section of the transmission arm (7) is hinged to the support frame (13) provided on the support platform (11). The lower end of the transmission frame (8) is connected to the pressure block (9) via an elastic telescopic rod (14), and the upper end is movably connected to the end of the transmission arm (7) away from the eccentric wheel (6). When the handle (5) is pressed down, the transmission arm (7) is driven to swing, thereby driving the transmission frame (8) and the pressure block (9) to move down, clamping the workpiece between the pressure block (9) and the positioning seat (2), and when the eccentric wheel (6) passes the dead point position, the clamping position is self-locked. The linkage protection mechanism (4) includes an air cylinder (16) with an internal piston (15) and an air guide pipe (17). The air cylinder (16) is located on the side of the support platform (11). The piston rod (18) of the piston (15) is linked with the transmission frame (8). When the transmission frame (8) moves down, it drives the piston (15) to move down synchronously. Compressed air is ejected from the nozzle (22) through the air guide pipe (17) to form a blowing airflow on the welding area of ​​the workpiece. The transmission arm (7) is fixedly provided with a sliding column (19) at one end away from the eccentric wheel (6), and a bracket (20) is fixedly provided at the upper end of the transmission frame (8). The bracket (20) is provided with a horizontally extending sliding opening (21), and the sliding column (19) is slidably disposed in the sliding opening (21); the piston rod (18) of the piston (15) is fixed to the bottom of the bracket (20); The pressure block (9) has a C-shaped structure, with its two side legs used to contact the edge of the upper surface of the workpiece, and the hollow area in the middle corresponding to the welding position of the workpiece. It also includes an auxiliary cooling mechanism (25), which includes a liquid storage block (26) disposed at the edge of the hollow area of ​​the pressure block (9). The bottom side of the liquid storage block (26) is provided with a capillary groove (27) communicating with its internal cavity. The outlet end of the capillary groove (27) is located at the edge of the hollow area of ​​the pressure block (9).

2. The welding apparatus for manufacturing and processing pressure sensors according to claim 1, characterized in that: The nozzle (22) is located at the edge of the hollow area of ​​the pressure block (9), and its air outlet direction is towards the welding area of ​​the workpiece; the outlet end of the nozzle (22) is duckbill shaped.

3. The welding apparatus for pressure sensor manufacturing and processing according to claim 1, characterized in that: The air cylinder (16) is equipped with an inlet check valve (23) and an exhaust check valve (24), and the exhaust check valve (24) is connected to the air guide pipe (17).

4. The welding apparatus for pressure sensor manufacturing and processing according to claim 1, characterized in that: The liquid storage block (26) is fitted into the slot (29) at the edge of the hollow area of ​​the pressure block (9) by the insert (28), and the two are fixed and limited by the pin (30).

5. A welding apparatus for manufacturing and processing pressure sensors according to claim 1, characterized in that: The end of the liquid storage block (26) opposite to the nozzle (22) is a slope (31), and the opening direction of the slope (31) is away from the center of the pressure block (9).

6. A welding apparatus for manufacturing and processing pressure sensors according to claim 5, characterized in that: A horizontal baffle (32) is fixedly provided above the inclined surface (31).

7. A welding apparatus for manufacturing and processing pressure sensors according to claim 1, characterized in that: A section of the air guide tube (17) is embedded inside the pressure block (9).

Images