A ceramic diaphragm assembly welding tool

Abstract

The utility model discloses a kind of ceramic membrane piece group assembly welding tool, it is related to membrane piece assembly technical field, including: base, the mounting surface of base has riser plate;Sliding block, the sliding connection of sliding block and the base mounting surface, and the sliding block can slide towards the direction of riser plate;The end face of the riser plate and sliding block opposite all have the clamping groove for placing lead wire mutually parallel, two the clamping groove top all through, the center line of two The clamping groove is coplanar, and top flush;The width size of the clamping groove and lead wire size are compatible;The riser plate and sliding block all have magnet for adsorbing lead wire in clamping groove.Using the present scheme, the precision of product assembly can be guaranteed, and assembly error can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of diaphragm assembly technology, specifically to a welding fixture for assembling ceramic diaphragm assemblies. Background Technology

[0002] A ceramic diaphragm assembly consists of a set of ceramic diaphragms and two leads, which are connected to the terminal electrodes of the ceramic diaphragms by soldering. The structure of the ceramic diaphragm assembly is as follows: Figure 1 As shown.

[0003] Ceramic diaphragms can be classified into more than twenty types according to their size, ranging from 0.805 to 4.5105; and according to their stacking method, they can be divided into vertical stacking and horizontal stacking. Figure 2 As shown; based on the number of stacked ceramic films, they can be divided into 1 to 10 pieces, such as... Figure 3 As shown; based on the lead wire configuration, they are divided into three types: L, J, and N, such as... Figure 4 As shown.

[0004] There are two assembly methods for ceramic diaphragm assemblies: fully automated assembly and manual assembly. Tooling is used in both processes. After assembly and soldering, issues such as inconsistent product height, inconsistent lead and chip spacing, and non-coplanar leads often occur. Figure 5 As shown, this leads to assembly errors during the assembly process, which is closely related to the design and processing of the assembly welding fixtures. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention aims to provide a ceramic diaphragm assembly welding fixture. By adopting this solution, the accuracy of product assembly can be guaranteed, and assembly errors can be avoided.

[0006] This utility model is achieved through the following technical solution:

[0007] A ceramic diaphragm assembly welding fixture, comprising:

[0008] A base, wherein the mounting surface of the base has a vertical plate;

[0009] A slider is slidably connected to the base mounting surface, and the slider can slide towards the upright plate;

[0010] The upright plate and the slider have parallel slots on their opposite ends for placing the lead wire. The tops of the two slots are connected, the center lines of the two slots are coplanar, and the tops are flush. The size of the slots is compatible with the size of the lead wire.

[0011] Both the upright plate and the slider are equipped with magnets for attracting the lead wire into the slot.

[0012] Compared to existing technologies, which often result in inconsistent product heights, inconsistent pin and chip gaps, and non-coplanar pins after product assembly and welding, this invention provides a ceramic diaphragm assembly and welding fixture. This solution ensures product assembly accuracy and avoids assembly errors. Specifically, the fixture includes a base and a slider that slides on the base. A vertical plate is provided at the end of the base, and opposing slots are formed on the opposite surfaces of the slider and the vertical plate. The two slots are flush, their center lines are on the same plane, and the width of the slots is the same as the width of the lead wire. This allows the lead wire to be directly inserted into the two slots from top to bottom under the action of an external clamp. The slots restrict the installation position of the lead wire, preventing tilting and ensuring the two lead wires are flush. After the lead wire is installed, it is placed on the vertical plate and the slider respectively. A magnet is used to attract the lead wires from the back, achieving initial fixation. Then, a ceramic diaphragm assembly is placed between the upright plate and the slider, with its mounting surfaces facing the two lead wires. An external clamp positions the ceramic diaphragm assembly. The slider is then driven towards the upright plate to clamp and assemble the ceramic diaphragm assembly and lead wires. Finally, the product and tooling are fed into a reflow soldering machine for welding. The reflow soldering temperature is approximately 320℃, and the time is 60-120 seconds. After welding, the assembled welding tooling must be solvent-cleaned. The positioning of the lead wires using the slots in this design ensures the accuracy of product assembly, thus avoiding assembly errors. In addition, to further ensure the accuracy of product assembly, the base and slider are machined using a CNC machining center. In particular, the slots on the base and slider for positioning the chip leads are machined using a slow wire EDM with an accuracy of 0.002mm. Through CNC and slow wire EDM precision machining, it is ensured that the lead mounting surface on the base is parallel to the lead mounting surface on the slider. Secondly, the semi-circular holes on both sides of the slot are holes machined by the machining tool during the process of machining the bottom through hole.

[0013] To further optimize the system and ensure stable sliding of the slider, the mounting surface of the base has side plates on both sides, and a cover plate is closed between the two side plates. The two side plates and the cover plate form a space for the slider to slide.

[0014] To further optimize the design and enable a detachable connection between the slider and the cover plate, the cover plate is connected to two side plates via several fastening screws.

[0015] To further optimize the design, in order to attract the lead wire from the back, the top of the slider facing the upright plate has a mounting groove, which is used to place a magnet.

[0016] To further optimize the design and prevent the slider from sliding off the base, a long, through-hole is provided in the center of the top surface of the slider; the cover plate or the mounting surface of the base has a limiting plate that can be inserted into the long, through-hole.

[0017] To further optimize the process and enable slow movement of the slider for high-precision assembly, a push rod and a first spring are also included. One end of the push rod can slide through the other end of the slider and pass through the limiting plate.

[0018] One end of the first spring is connected to the limiting plate, and the other end of the first spring is sleeved and fixed to the top rod; the first spring is located on the side of the limiting plate facing the slider. In this design, the first spring provides elastic force, and one end of the top rod has a head. When the top rod is pulled outward by external equipment or manually, the top rod can drive the slider to slide slowly outward through the first spring; when the top rod is pushed inward by external equipment or manually, the top rod can drive the slider to slide slowly inward through the first spring, which facilitates high-precision assembly.

[0019] To further optimize the design and temporarily fix the push rod after it is clamped and assembled, a stop screw is also included. The top surface of the other end of the slider has a through first threaded hole. The stop screw is connected to the first threaded hole and is used to abut against the side wall of the push rod.

[0020] To further optimize the design and reduce the frictional contact area, making it easier to control the movement accuracy of the slider, a first clearance groove is provided on both side walls of the slider, extending along its own length.

[0021] To further optimize the assembly and improve the assembly accuracy, the system also includes a ball screw and a nut. At least one of the side plates has a second threaded hole for threaded connection with the ball screw. One end of the ball screw can extend into the first clearance groove. One end of the ball screw has a placement groove, and a second spring is provided in the placement groove. One end of the second spring is connected to the bottom surface of the placement groove, and the other end of the second spring is connected to a steel ball. The diameter of the steel ball is adapted to the inner diameter of the placement groove. The second spring is used to press the steel ball against the side wall of the slider.

[0022] The nut and the ball screw are threaded together at the other end. In this solution, during the assembly of the welding fixture, the compression action of the second spring and steel ball in the ball screw makes the side of the slider flush with the side of the base, thereby ensuring that the center plane of the slot on the base is coplanar with the center plane of the slot on the slider. At the same time, the nitrogen-carbon-oxygen composite treatment of the material surface (QPQ patented technology) can greatly reduce the friction when the base and the slider move relative to each other.

[0023] To further optimize the system and reduce the frictional contact area, at least one second clearance groove is provided on the mounting surface of the base.

[0024] In addition, the assembly and welding fixtures must meet the following requirements: 1. High material strength and strong fatigue resistance; 2. High material surface hardness; 3. Wear resistance and low coefficient of friction; 4. Coefficient of thermal expansion close to that of the product, resulting in high thermal stability; 5. Material surface resistant to solvent cleaning; 6. Strong weld resistance; and since the base and slider are key moving parts, their surfaces are treated with a nitrogen-carbon-oxygen composite treatment (QPQ patented technology). QPQ treatment significantly improves the wear resistance of the material, reduces the coefficient of friction, enhances corrosion resistance and high-temperature dimensional stability, and increases fatigue strength by 20% to 200%.

[0025] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0026] 1. This utility model provides a ceramic diaphragm assembly welding fixture. By using this solution, through a slot with the same design and lead wire size, it is possible to position the lead wire and ceramic diaphragm assembly in the thickness, depth and height directions, thereby ensuring the accuracy of product assembly and avoiding assembly errors.

[0027] 2. This utility model provides a ceramic diaphragm assembly welding fixture. Using this solution, the slider can be slowly moved and pressed by the cooperation of the push rod and the first spring. Through the squeezing action of the second spring and steel ball in the ball screw, the side of the slider is made flush with the side of the base, thereby ensuring that the center plane of the slot on the base is coplanar with the center plane of the slot on the slider, further ensuring the accuracy of product assembly and avoiding assembly errors. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the exemplary embodiments of this utility model, the drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0029] Figure 1 An exploded view of all components required for assembling a ceramic diaphragm assembly in the prior art;

[0030] Figure 2 This is a schematic diagram of the stacking method of ceramic diaphragm assemblies in the prior art;

[0031] Figure 3 This is a schematic diagram showing the various combinations of quantities of ceramic diaphragm assemblies in the prior art;

[0032] Figure 4 This is a schematic diagram of various types of lead pins in the prior art;

[0033] Figure 5A schematic diagram illustrating various assembly problems that exist during product assembly and welding in the prior art;

[0034] Figure 6 Exploded view of the ceramic diaphragm assembly welding fixture provided by this utility model;

[0035] Figure 7 This is a schematic diagram of the structure of the ceramic diaphragm assembly welding fixture provided by this utility model;

[0036] Figure 8 A schematic diagram illustrating the precision control of lead wire insertion into the slot provided by this utility model;

[0037] Figure 9 A schematic diagram illustrating the use of a ceramic diaphragm assembly welding fixture to solve the lead wire tilting problem provided by this utility model;

[0038] Figure 10 The working principle diagram of the ball screw provided by this utility model;

[0039] Figure 11 A schematic diagram illustrating the use of a ceramic diaphragm assembly welding fixture to solve the lead wire misalignment problem provided by this utility model;

[0040] Figure 12 This utility model provides an assembly process diagram;

[0041] Figure 13 A schematic diagram illustrating the insertion of the lead wire according to this utility model;

[0042] Figure 14 A schematic diagram of the outward and backward dragging of the slider provided by this utility model;

[0043] Figure 15 A schematic diagram illustrating the placement of the ceramic diaphragm assembly provided by this utility model;

[0044] Figure 16 A schematic diagram illustrating the assembly of the slider clamping mechanism during the release of the lever provided by this utility model;

[0045] Figure 17 A schematic diagram of the pinout provided by this utility model;

[0046] Figure 18 A schematic diagram illustrating the compatibility of the slot depth provided by this utility model;

[0047] Figure 19 A schematic diagram illustrating the compatibility of the slot width provided by this utility model;

[0048] Figure 20 This is a schematic diagram illustrating the compatibility of the card slot opening height provided by this utility model.

[0049] The attached diagram shows the markings and corresponding component names:

[0050] 1-Base, 101-Upright plate, 102-Slot, 103-Side plate, 104-Cover plate, 105-Fasting screw, 106-Second clearance groove, 2-Slider, 201-Mounting groove, 202-Elongated hole, 203-First clearance groove, 3-Magnet, 4-Limiting plate, 5-Top rod, 6-First spring, 7-Stop screw, 8-Ball screw, 801-Second spring, 802-Steel ball, 9-Nut. Detailed Implementation

[0051] 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 embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0052] Example 1: This Example 1 provides a ceramic diaphragm assembly welding fixture, such as... Figures 6-20 As shown, it includes:

[0053] Base 1, with a vertical plate 101 on its mounting surface;

[0054] Slider 2 is slidably connected to the mounting surface of the base 1, and slider 2 can slide towards the vertical plate 101;

[0055] The upright plate 101 and the slider 2 each have parallel slots 102 for placing the lead wire on their opposite end faces. The tops of the two slots 102 are connected, the center lines of the two slots 102 are coplanar, and the tops are flush. The size of the slots 102 is adapted to the size of the lead wire.

[0056] Both the upright plate 101 and the slider 2 are equipped with magnets 3 for attracting the lead wire into the slot 102.

[0057] Compared to existing technologies, which often result in inconsistent product heights, inconsistent pin and chip gaps, and non-coplanar pins after product assembly and welding, this invention provides a ceramic diaphragm assembly and welding fixture. This solution ensures product assembly accuracy and avoids assembly errors. Specifically, the fixture includes a base 1 and a slider 2, which slides on the base 1. A vertical plate 101 is provided at the end of the base 1. Opposite slots 102 are formed on the opposing surfaces of the slider 2 and the vertical plate 101. The two slots 102 are flush, their center lines are on the same plane, and their width is the same as the lead wire width. This allows the lead wire to be directly inserted into the two slots 102 from top to bottom under the action of an external clamp. The slots 102 restrict the installation position of the lead wire, preventing tilting and ensuring the two lead wires are flush. After the lead wire is installed in place, it is mounted on the vertical plate... Magnets 3 are placed on the vertical plate 101 and slider 2, attracting the lead wires from the back and initially fixing them. Then, a ceramic diaphragm assembly is placed between the vertical plate 101 and slider 2, with the mounting surfaces of the ceramic diaphragm assembly facing the two lead wires. An external clamp positions the ceramic diaphragm assembly. Slider 2 is then driven to move towards the vertical plate 101, clamping and assembling the ceramic diaphragm assembly and the lead wires. Finally, the product, along with the tooling, is placed in a reflow soldering machine for welding. The reflow soldering temperature is approximately 320℃, and the time is 60-120 seconds. After welding, the assembled welding tooling must be cleaned with solvent. The positioning of the lead wires by the slot 102 in the above scheme ensures the accuracy of product assembly, thus avoiding assembly errors. In addition, to further ensure the accuracy of product assembly, the base 1 and slider 2 are machined using a CNC machining center. In particular, the slots for positioning the chip leads on the base 1 and slider 2 are machined using slow wire EDM with an accuracy of 0.002mm. Through CNC and slow wire EDM precision machining, it is ensured that the lead mounting surface on the base 1 is parallel to the lead mounting surface on the slider 2. Secondly, the semi-circular holes on both sides of the slot 102 are holes machined by the machining tool during the process of machining the bottom through hole.

[0058] Among them, such as Figure 8 As shown, when assembling the welding fixture to control the assembly accuracy of the product, the two leads are inserted into the two slots 102 respectively. It is necessary to ensure that the center surface of the lead is flush with the center surface of the slot 102 on the upright plate 101, and the center surface of the other lead is flush with the center surface of the slot 102 on the end face of the slider 2. The slots 102 are precision-machined using CNC and slow wire EDM to ensure that the lead mounting surface on the base 1 is parallel to the lead mounting surface on the slider 2, effectively solving the problem of… Figure 9 and Figure 11 The assembly problem shown.

[0059] In this embodiment, in order to achieve stable sliding of the slider 2, both sides of the mounting surface of the base 1 are equipped with side plates 103, and the top between the two side plates 103 is closed with a cover plate 104. The two side plates 103 and the cover plate 104 form a space for the slider 2 to slide.

[0060] In this embodiment, in order to achieve a detachable connection between the slider 2 and the cover plate 104, the cover plate 104 is connected to two side plates 103 by several fastening screws 105.

[0061] In this embodiment, in order to attract the lead wire from the back, the top of the slider 2 facing the upright plate 101 has a mounting groove 201, and the mounting groove 201 is used to place the magnet 3.

[0062] In this embodiment, to prevent the slider 2 from sliding out of the base 1, a long strip hole 202 is also opened in the middle of the top surface of the slider 2; the cover plate 104 or the mounting surface of the base 1 is equipped with a limiting plate 4 for inserting into the long strip hole 202.

[0063] In this embodiment, in order to achieve slow movement of the slider 2 for high-precision assembly, a push rod 5 and a first spring 6 are also included. One end of the push rod 5 can slide through the other end of the slider 2 and slide through the limiting plate 4.

[0064] One end of the first spring 6 is connected to the limiting plate 4, and the other end of the first spring 6 is sleeved and fixed to the top rod 5; the first spring 6 is located on the side of the limiting plate 4 facing the slider 2. In this design, the first spring 6 provides elastic force, and the top rod 5 has a head at one end. When the top rod 5 is pulled outward by external equipment or manually, the top rod 5 can drive the slider 2 to slide outward slowly through the first spring 6; when the top rod 5 is pushed inward by external equipment or manually, the top rod 5 can drive the slider 2 to slide inward slowly, which facilitates high-precision assembly.

[0065] In this embodiment, in order to temporarily fix the top rod 5 after clamping and assembly, a stop screw 7 is also included. The top surface of the other end of the slider 2 has a through first threaded hole. The stop screw 7 is connected to the first threaded hole and is used to abut against the side wall of the top rod 5.

[0066] In this embodiment, in order to reduce the frictional contact area and facilitate the control of the movement accuracy of the slider 2, the two side walls of the slider 2 are provided with a first clearance groove 203 that runs through the length of the slider 2.

[0067] In this embodiment, as Figure 10As shown, to improve assembly accuracy, ball screws 8 and nuts 9 are also included. At least one of the side plates 103 has a second threaded hole for threaded connection with the ball screw 8. One end of the ball screw 8 can extend into the first clearance groove 203. One end of the ball screw 8 has a placement groove, and a second spring 801 is provided in the placement groove. One end of the second spring 801 is connected to the bottom surface of the placement groove, and the other end of the second spring 801 is connected to a steel ball 802. The diameter of the steel ball 802 is adapted to the inner diameter of the placement groove. The second spring 801 is used to abut the steel ball 802 against the side wall of the slider 2.

[0068] The nut 9 and the ball screw 8 are threaded together at their other ends. In this solution, as shown... Figure 10 As shown, during the assembly of the welding fixture, the compression action of the second spring 801 and the steel ball 802 in the ball screw makes the side of the slider 2 flush with the side of the base 1, thereby ensuring that the center plane of the slot 102 on the base 1 is coplanar with the center plane of the slot 102 on the slider 2. At the same time, the nitrogen-carbon-oxygen composite treatment of the material surface (QPQ patented technology) can greatly reduce the friction when the base 1 and the slider 2 move relative to each other.

[0069] In this embodiment, to reduce the frictional contact area, at least one second clearance groove 106 is also provided on the mounting surface of the base 1.

[0070] In addition, the assembly and welding fixtures must meet the following requirements: 1. High material strength and strong fatigue resistance; 2. High material surface hardness; 3. Wear resistance and low coefficient of friction; 4. Coefficient of thermal expansion close to that of the product, resulting in high thermal stability; 5. Material surface resistant to solvent cleaning; 6. Strong weld resistance; and since base 1 and slider 2 are key moving parts, their surfaces are treated with a nitrogen-carbon-oxygen composite process (QPQ patented technology). QPQ treatment significantly improves the wear resistance of the materials, reduces the coefficient of friction, enhances corrosion resistance and high-temperature dimensional stability, and increases fatigue strength by 20% to 200%.

[0071] Example 2: Based on Example 1, Example 2 provides a specific assembly control method.

[0072] First, such as Figure 12 and Figure 13 As shown, first, place the two lead wire assemblies into the two slots 102 of the tooling fixture, ensuring that the center surface of the lead wire is flush with the center surface of the slot 102 on the upright plate 101, and the center surface of the other lead wire is flush with the center surface of the slot 102 on the end face of the slider 2; then, use the attraction of the magnet 3 to fix the two leads wires in the slots 102, appropriately raising the height of the leads to prevent interference with the ceramic diaphragm assembly during subsequent assembly. Figure 13 As shown.

[0073] Then, pull the push rod 5 backward to move the slider 2 to an appropriate distance between the two leads. At this point, the ceramic diaphragm assembly can be lowered. Figure 14 As shown.

[0074] Place the ceramic diaphragm assembly between the two leads and position it in the designated center position using an external clamp. Figure 15 As shown.

[0075] Then, the pulling force of the push rod 5 is slowly released, causing the slider 2 to move forward slowly until the two end electrodes of the ceramic diaphragm assembly contact the lead wire assembly. At this point, the slider 2 is held in place by the elastic force of the first spring 6. Figure 16 As shown.

[0076] After moving into place, the pin position of the pressure lead is as follows: Figure 17 As shown; where the pressure-down pin allows the pin planes of the two leads to be coplanar, in order to solve the problem of... Figure 1 The assembly problem is shown in the first three pictures.

[0077] Finally, the product and tooling are fed into the reflow soldering equipment for welding.

[0078] In the above scheme, such as Figure 18 As shown, the slot depth (D) of the assembly welding fixture is compatible: since the slot depth (D) on the base 1 and slider 2 is consistent with the lead wire thickness, the assembly welding fixture only constrains the lead wire and not the ceramic diaphragm assembly. Therefore, the assembly welding fixture can be compatible with ceramic diaphragm assemblies of a certain size range.

[0079] Secondly, such as Figure 19 As shown, the slot width (W) of the assembly welding fixture is compatible: as long as the width dimension (W) of the lead wire is consistent with the slots of the base 1 and the slider 2, the assembly welding fixture can be compatible with J-type and N-type lead wire products stacked within a certain size range. At the same time, it is also compatible with lead wire structures with and without positioning teeth.

[0080] In addition, such as Figure 20 As shown, the height dimension (H) of the assembly and welding fixture is compatible: as long as the height dimension (H) of the lead wire is consistent with the slots opened on the base 1 and the slider 2, the assembly and welding fixture can also be compatible with J, L, and N type lead products stacked within a certain size range. At the same time, it is also compatible with lead wire structures with and without positioning teeth.

[0081] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A ceramic diaphragm assembly welding fixture, characterized in that, include: The base (1) has a vertical plate (101) on its mounting surface. The slider (2) is slidably connected to the mounting surface of the base (1), and the slider (2) can slide towards the vertical plate (101); The upright plate (101) and the slider (2) have parallel slots (102) for placing the lead wires on their opposite end faces. The tops of the two slots (102) are connected, the center lines of the two slots (102) are coplanar, and the tops are flush. The size of the slots (102) is compatible with the size of the lead wires. Both the upright plate (101) and the slider (2) are equipped with magnets (3) for attracting the lead wire into the slot (102).

2. The ceramic diaphragm assembly welding fixture according to claim 1, characterized in that, The mounting surface of the base (1) has side plates (103) on both sides, and a cover plate (104) is closed between the two side plates (103). The two side plates (103) and the cover plate (104) form a space for the slider (2) to slide.

3. The ceramic diaphragm assembly welding fixture according to claim 2, characterized in that, The cover plate (104) is connected by a number of fastening screws (105) and two side plates (103).

4. The ceramic diaphragm assembly welding fixture according to claim 2, characterized in that, The slider (2) has a mounting groove (201) at the top of one end facing the upright plate (101), and the mounting groove (201) is used to place the magnet (3).

5. The ceramic diaphragm assembly welding fixture according to claim 2, characterized in that, The slider (2) also has a long, through hole (202) in the middle of its top surface; the cover plate (104) or the base (1) has a limiting plate (4) that can be inserted into the long hole (202) on its mounting surface.

6. The ceramic diaphragm assembly welding fixture according to claim 5, characterized in that, It also includes a push rod (5) and a first spring (6), one end of which can slide through the other end of the slider (2) and slide through the limiting plate (4); One end of the first spring (6) is connected to the limiting plate (4), and the other end of the first spring (6) is sleeved and fixed on the top rod (5); the first spring (6) is located on the side of the limiting plate (4) facing the slider (2).

7. The ceramic diaphragm assembly welding fixture according to claim 6, characterized in that, It also includes a stop screw (7), and the top surface of the other end of the slider (2) has a through first threaded hole. The stop screw (7) is connected to the first threaded hole and is used to abut against the side wall of the top rod (5).

8. The ceramic diaphragm assembly welding fixture according to claim 2, characterized in that, The slider (2) has a first clearance groove (203) on both sides of its length direction.

9. The ceramic diaphragm assembly welding fixture according to claim 8, characterized in that, It also includes a ball screw (8) and a nut (9), and at least one of the side plates (103) has a second threaded hole for threaded connection with the ball screw (8). One end of the ball screw (8) can extend into the first clearance groove (203). One end of the ball screw (8) has a placement groove, and a second spring (801) is provided in the placement groove. One end of the second spring (801) is connected to the bottom surface of the placement groove, and the other end of the second spring (801) is connected to a steel ball (802). The diameter of the steel ball (802) is adapted to the inner diameter of the placement groove. The second spring (801) is used to abut the steel ball (802) against the side wall of the slider (2). The nut (9) and the ball screw (8) are threaded together at the other end.

10. A ceramic diaphragm assembly welding fixture according to any one of claims 2 to 9, characterized in that, At least one second clearance groove (106) is also provided on the mounting surface of the base (1).

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