Tool device for PCBA welding and maintenance
By designing the tooling device of the first assembly, the second assembly and the magnetic base, the fixing difficulties and chip damage in the welding and maintenance of hydrophones are solved, a stable welding and maintenance environment is achieved, efficiency is improved and MEMS chip is protected.
Patent Information
- Application Number
- CN202422412917.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-30
AI Technical Summary
When welding and repairing hydrophones, existing tooling devices are difficult to effectively fix the circular PCBA, and it is easy to cause damage to the MEMS chip or the tilt and rotate the metal shell, affecting the welding and maintenance efficiency.
Using a tooling device including a first assembly, a second assembly and a magnetic base, the metal housing is fixed by means of arcuate projections and magnets to prevent flip and rotation, and restrict movement by thimble screws to protect the MEMS chip.
Provides a stable soldering and repair environment, prevents MEMS chip damage, improves soldering and repair efficiency, and extends chip life.
Smart Images
Figure CN223146441U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydrophones, and particularly relates to a tooling device for PCBA welding and repair. Background Technique
[0002] A hydrophone is a core part of a marine monitoring system and is often used for the monitoring of boats in the ocean and the monitoring of ocean water patterns. When the MEMS chip of the hydrophone senses an acoustic signal, it can convert the acoustic signal into an electrical signal, and the sea condition information of the ocean can be obtained by analyzing the electrical signal. However, during the manufacturing process of the hydrophone, it is necessary to fix the circular PCBA with the MEMS chip inside a cylindrical metal shell. The metal shell has a certain height, and the inner diameter of the metal shell is the same as the diameter of the circular PCBA. The circular PCBA is placed inside the metal shell through the open end of the metal shell, and there is an opening at the other end of the metal shell to expose the MEMS chip. After the circular PCBA is fixed inside the metal shell, welding operations and MEMS chip surface dispensing operations need to be carried out. Since the metal shell has a certain depth and is cylindrical, it is not convenient to carry out fixing and welding operations. In addition, the MEMS chip is relatively fragile, and touching it may also cause damage to the MEMS chip. Therefore, a set of tooling device is needed to solve the above problems.
[0003] Most of the common tooling devices for welding and repair on the market currently are realized by using clips or bench vises. When using a clip to clamp the circular PCBA, due to the existence of the metal shell and the metal shell having a certain height, the operation is relatively inconvenient, and the clip is likely to touch the MEMS chip and cause damage to it. When using a bench vise to clamp the metal shell, since the outer contour of the metal shell is cylindrical and the contact surface is small, the metal shell is likely to tilt or rotate during welding, and clamping with a bench vise is likely to cause deformation of the metal shell.
[0004] Therefore, the utility model proposes a tooling device for PCBA welding and repair. Content of the Utility Model
[0005] The purpose of the utility model is to propose a tooling device for PCBA welding and repair, and by using this tooling device, the welding and repair operations of the PCBA can be realized.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0007] A tooling device for PCBA welding and repair includes a first assembly body, a second assembly body and a magnetic suction base. Among them, the first assembly body and the second assembly body are arranged above the magnetic suction base;
[0008] One side of the first assembly is provided with a semi-circular groove, and the inner wall of the semi-circular groove is provided with an arc-shaped protrusion; on the opposite side of the first assembly, a plurality of threaded holes are provided; on the top and bottom surfaces of the first assembly, two symmetrically arranged assembly screws are provided respectively.
[0009] The layout of the second assembly is symmetrical with that of the first assembly. Among them, the semi-circular groove of the first assembly and the semi-circular groove of the second assembly are arranged oppositely, and the first assembly and the second assembly are connected by non-detachable screws passing through the oppositely arranged threaded holes; on the top surface of the magnetic suction base, four symmetrically arranged magnets are provided, and the magnets are arranged oppositely to the assembly screws.
[0010] Preferably, a thimble screw is provided on the first assembly, and the end of the thimble screw passes through the first assembly and is located in the semi-circular groove.
[0011] Preferably, a limiting protrusion is provided on the edge of the first assembly, and a limiting groove is provided on the edge of the second assembly opposite to the limiting protrusion, and the limiting protrusion is adapted to the limiting groove.
[0012] Preferably, two symmetrically arranged L-shaped grooves are provided on the top and bottom surfaces of the first assembly and the second assembly; on the top surface of the magnetic suction base and opposite to the L-shaped grooves, L-shaped protrusions are provided, and the L-shaped protrusions are adapted to the L-shaped grooves.
[0013] Preferably, force application grooves are provided on both side walls of the magnetic suction base.
[0014] Preferably, a placement groove is provided at the center position of the top of the magnetic suction base.
[0015] Preferably, both the top and bottom sides of the semi-circular groove extend to the top and bottom surfaces of the first assembly and the second assembly through slopes.
[0016] Preferably, the top and bottom surfaces of the first assembly and the second assembly adopt the same layout design.
[0017] Preferably, the assembly screw is a flat-head carbon steel screw.
[0018] Preferably, the outer contour of the magnet is annular, and the magnet is fixed to the magnetic suction base by fastening screws.
[0019] The beneficial effects of the present utility model are as follows:
[0020] The present utility model provides a tooling device for PCBA welding and repair. By assembling the first assembly and the second assembly, placing the metal shell of the hydrophone component in the circular groove formed at the central position after assembly, and setting arc-shaped protrusions to fit into the outer wall groove of the metal shell, the metal shell can be prevented from flipping or moving, providing a good working environment for subsequent welding and repair operations. At the same time, the thimble screws inserted on the first assembly can abut against the side wall of the metal shell, applying a certain pressure to the metal shell to limit its movement, so that the circular PCBA with the metal shell does not rotate, ensuring the smooth progress of subsequent welding and repair operations.
[0021] The tooling device of the present utility model adopts a magnetic absorption base with a strong magnetic magnet. Through the magnet, the first assembly and the second assembly can be well attracted, making the assembly of the magnetic absorption base, the first assembly and the second assembly simpler and more efficient. At the same time, force application grooves are provided on both sides of the magnetic absorption base, which is also convenient for subsequent disassembly. In addition, a placement groove is provided at the middle position of the magnetic absorption base. When welding and repair operations are carried out, the MEMS chip does not come into contact with the magnetic absorption base, preventing the tooling device from pressing and damaging the MEMS chip, and playing a good protective role for the MEMS chip. Brief Description of the Drawings
[0022] Figure 1 Assembly schematic of the present utility model and the hydrophone component Figure 1 ;
[0023] Figure 2 Assembly schematic of the present utility model and the hydrophone component Figure 2 ;
[0024] Figure 3 Structural schematic diagram of the hydrophone component of the present utility model;
[0025] Figure 4 Three-dimensional view of the present utility model Figure 1 ;
[0026] Figure 5 Three-dimensional view of the present utility model Figure 2 ;
[0027] Figure 6 Side view of the present utility model;
[0028] Figure 7 Structural schematic diagram of the first assembly of the present utility model;
[0029] Figure 8 Structural schematic diagram of the second assembly of the present utility model;
[0030] Figure 9Structural schematic diagram of the magnetic base of the present utility model;
[0031] Among them, 1 - Tooling device:
[0032] 11 - First assembly: 111 - Arc-shaped protrusion, 112 - Ramp, 113 - Assembly screw, 114 - L-shaped groove, 115 - Thumb screw, 116 - Non-loosening screw, 117 - Limit protrusion;
[0033] 12 - Second assembly: 127 - Limit groove;
[0034] 13 - Magnetic base: 131 - Placing groove, 132 - Force-applying groove, 133 - Magnet, 134 - L-shaped protrusion;
[0035] 2 - Hydrophone assembly: 21 - Metal shell, 22 - Circular PCBA. Specific embodiments
[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.
[0037] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0038] First of all, it should be noted that during the production of the hydrophone, the circular PCBA 22 with the MEMS chip needs to be fixed inside the cylindrical metal shell 21 to form the hydrophone assembly 2, as Figure 3 shown. The metal shell 21 has a certain height, and the inner diameter of the metal shell 21 is equal to the diameter of the circular PCBA 22. The circular PCBA 22 is placed inside the metal shell 21 through the open end of the metal shell 21, and there is an opening at the other end of the metal shell 21 through which the MEMS chip can be exposed. After the circular PCBA 22 is fixed inside the metal shell 21, welding operations and MEMS surface dispensing operations need to be carried out. For this reason, the present utility model proposes a tooling device for PCBA welding and repair.
[0039] Combined with Figures 4 to 6As shown, the tooling device 1 mainly includes structural components such as a first assembly 11, a second assembly 12, and a magnetic base 13. Among them, the first assembly 11 and the second assembly 12 are arranged above the magnetic base 13. It should be noted that the structural designs of the first assembly 11 and the second assembly 12 are basically the same and the layouts are symmetrical. Therefore, only the structural design of the first assembly 11 will be mainly described below, and the differences between the second assembly 12 and the first assembly 11 will be supplemented and described.
[0040] Combined with Figure 4 and Figure 7 As shown, a semi-circular groove is provided on one side of the first assembly 11. The semi-circular groove of the first assembly 11 and the semi-circular groove of the second assembly 12 are arranged oppositely. When the first assembly 11 and the second assembly 12 are assembled, a circular groove will be formed in the middle position. The circular groove is adapted to the size of the metal shell 21 and can be used to place the cylindrical metal shell 21.
[0041] Combined with Figure 7 As shown, an arc-shaped protrusion 111 is provided on the inner wall of the semi-circular groove. The arc-shaped protrusion 111 can be fitted into the outer wall groove of the metal shell 21 to achieve better fixation of the metal shell 21 and provide a stable working environment for subsequent welding and repair operations.
[0042] Combined with Figure 1 and Figure 7 As shown, both the top and bottom sides of the semi-circular groove extend to the top and bottom surfaces of the first assembly 11 through slopes 112. That is, after the first assembly 11 and the second assembly 12 are assembled, the opening shape formed in the middle position is frustum-shaped. Compared with the cylindrical opening, the opening radius gradually increases closer to the surface of the assembly. When the metal shell 21 with the circular PCBA 22 is placed into the assembled circular groove, the staff can complete the welding and repair operations more conveniently and quickly, and can also relatively improve the working efficiency of the welding and repair operations.
[0043] Combined with Figure 1 and Figure. 5 As shown, a plurality of threaded holes are provided on the opposite side of the first assembly 11. A plurality of threaded holes are also correspondingly provided at the relative positions of the threaded holes provided on the second assembly 12 and the first assembly 11. Among them, the first assembly 11 and the second assembly 12 are connected by non-removable screws 116 passing through the oppositely arranged threaded holes in sequence, realizing the connection and fixation of the first assembly 11 and the second assembly 12.
[0044] Combined with Figure 7 and Figure 8As shown, a limiting protrusion 117 is provided at the edge of the first assembly 11, and a limiting groove 127 is formed at the edge of the second assembly 12 opposite to the limiting protrusion 117. The limiting protrusion 117 and the limiting groove 127 are adapted to each other. The limiting protrusion 117 and the limiting groove 127 can play a limiting role when the first assembly 11 and the second assembly 12 are assembled and connected, and can also relatively improve the overall stability of the tooling device 1.
[0045] Combined with Figure 5 and Figure 7 As shown, a thimble screw 115 is further provided on the first assembly 11. The end of the thimble screw 115 passes through the first assembly 11 and is located in the semi-circular groove. The thimble screw 115 can tighten the metal shell 21, apply a certain pressure to the metal shell 21, prevent the metal shell 21 from rotating in the tooling device 1, and provide a stable working environment for subsequent welding and repair operations.
[0046] Combined with Figure 4 and Figure 7 As shown, two symmetrically arranged assembly screws 113 are provided on each of the top and bottom surfaces of the first assembly 11. The assembly screws 113 are flat-headed carbon steel screws with a certain magnetic property and can be adsorbed by a magnet. Moreover, the ends of the assembly screws 113 do not protrude from the top and bottom surfaces of the first assembly 11. When the first assembly 11 and the second assembly 12 are assembled with the magnetic adsorption base 13, there is no excessive gap between the contact surfaces of the first assembly 11 and the second assembly 12 and the magnetic adsorption base 13, thus ensuring the stability of the assembly of the three. At the same time, the non-detachable screw 116 will not fall off due to the position of the flat-headed carbon steel screw.
[0047] Combined with Figure 7 and Figure 8 As shown, the layout design of the second assembly 12 is basically the same as that of the first assembly 11, and the top and bottom surfaces of the first assembly 11 and the second assembly 12 adopt the same layout design without distinguishing between the front and back. When performing MEMS dotting operations later, the first assembly 11 and the second assembly 12 can be flipped, improving the operation efficiency.
[0048] Combined with Figure 9As shown in the figure, four symmetrically arranged magnets 133 are provided at the corner positions on the top surface of the magnetic base 13, and the magnets 133 are arranged opposite to the assembly screws 113. The outer contour of the magnet 133 is annular, and the magnet 133 is fixed to the magnetic base 13 by fastening screws. Since the assembly screw 113 is a flat-head carbon steel screw, it has a certain magnetism, and the three parts of the first assembly 11, the second assembly 12, and the magnetic base 13 will be automatically attracted under the action of the magnetism of the magnet. Due to the action of the magnetism of the magnet, the installation and disassembly of the first assembly 11, the second assembly 12, and the magnetic base 13 are relatively convenient, indirectly improving the work efficiency.
[0049] Combined with Figures 4 to 6 As shown in the figure, force application grooves 132 are provided on both side walls of the magnetic base 13. The force application grooves 132 are used to increase the force application points when opening the magnetic base 13, the first assembly 11, and the second assembly 12, so as to facilitate more convenient opening and disassembly. A circular placement groove 131 is provided at the center position on the top of the magnetic base 13, and the placement groove 131 is located below the circular groove formed at the middle position after assembly. When welding operations are carried out, one side of the circular PCBA 22 with the MEMS chip will face the magnetic base 13, and the MEMS chip will be located in the circular placement groove 131, and the MEMS chip will not contact the magnetic base 13, preventing the tooling device 1 from damaging the MEMS chip and extending the service life of the MEMS chip.
[0050] Combined with Figures 7 to 9 As shown in the figure, two symmetrically arranged L-shaped grooves 114 are provided on both the top and bottom surfaces of the first assembly 11 and the second assembly 12. Four L-shaped protrusions 134 are provided at the corner positions on the top surface of the magnetic base 13 and opposite to the L-shaped grooves 114, and the L-shaped protrusions 134 are adapted to the L-shaped grooves 114. When the first assembly 11 and the second assembly 12 are assembled with the magnetic base 13, the L-shaped protrusions 134 and the L-shaped grooves 114 can play a role in limiting, ensuring the stability of the overall structure of the tooling device 1, providing a stable working environment for subsequent welding and repair operations, and also relatively improving the yield rate of the hydrophone.
[0051] The assembly sequence of the tooling device of the present utility model before use is as follows:
[0052] First, screw the thimble screw 115 of the first assembly 11 into the middle threaded hole, then insert the non-loosening screw 116 into the threaded holes on both sides, and tighten the four flat-head carbon steel screws; secondly, tighten the four flat-head carbon steel screws of the second assembly 12; finally, first install four strong magnetic magnets 133 on the magnetic base 13, and then screw on the fastening screws respectively.
[0053] The usage method of the tooling device of the present utility model is as follows:
[0054] First, place the second assembly 12 on the desktop sideways so that the semi-circular groove faces upward. Secondly, take a circular PCBA 22 with a metal shell 21, and its appearance is shown in Figure 3 , so that the outer wall groove of the metal shell 21 is aligned and fitted with the arc-shaped protrusion 111 of the second assembly 12. Then take the first assembly 11, align the limit protrusions 117 on both sides with the limit grooves 127 of the second assembly 12, assemble the first assembly 11 and the second assembly 12 together, and tighten the non-detachable screws 116 and the thimble screws 115 respectively. Then place the magnetic base 13 on the desktop so that the side with the placement groove 131 faces upward, and place the tooling assembled in the above steps on the magnetic base 13, so that the side with the MEMS chip faces downward, and the L-shaped protrusion 134 on the magnetic base 13 is aligned with the L-shaped groove 114 on the first assembly 11 and the second assembly 12, and the three parts are automatically attracted by the strong magnet 133. Finally, start the welding operation. When performing maintenance operations, the fixing method used is the same as that of the welding operation; at the same time, this tooling device can be used for dispensing operations on the MEMS surface. After completing the assembly of the first assembly 11 and the second assembly 12 in the above steps, flip the combination of the first assembly 11 and the second assembly 12 so that the side with the MEMS chip faces upward. After assembly, as shown in Figure 1 and Figure 2 shown.
[0055] The utility model provides a tooling device for PCBA welding and repair. By assembling the first assembly 11 and the second assembly 12, and placing the metal shell 21 of the hydrophone component 2 in the circular groove formed at the central position after assembly, and setting an arc-shaped protrusion 111 to fit into the outer wall groove of the metal shell 21 to prevent the metal shell 21 from flipping or moving, a good working environment is provided for subsequent welding and repair operations. At the same time, the thimble screw 115 inserted on the first assembly 11 can better abut against the side wall of the metal shell 21, applying a certain pressure to the metal shell 21, which can better limit the movement of the metal shell 21 and prevent the circular PCBA 22 with the metal shell 21 from rotating, ensuring the smooth progress of subsequent welding and repair operations. The tooling device of the utility model adopts a magnetic adsorption base 13 with a strong magnetic magnet 133. Through the magnet 133, the first assembly 11 and the second assembly 12 can be well attracted, making the assembly of the magnetic adsorption base 13, the first assembly 11 and the second assembly 12 simpler and more efficient. At the same time, force application grooves 132 are opened on both sides of the magnetic adsorption base 13, which is also convenient for subsequent disassembly. In addition, a placement groove 131 is also opened at the middle position of the magnetic adsorption base 13. When welding and repair operations are carried out, the MEMS chip can be prevented from contacting the magnetic adsorption base 13, preventing the tooling device 1 from crushing the MEMS chip and playing a good protective role for the MEMS chip.
[0056] Certainly, the above are only the preferred embodiments of the utility model, and do not limit the patent scope of the utility model accordingly. Any equivalent structural transformation made by using the description and drawings of the utility model under the inventive concept of the utility model, or direct / indirect application in other related technical fields, is included in the patent protection scope of the utility model and should be protected by the utility model.
Claims
1. A tooling device for PCBA soldering and repair, characterized in that, It includes a first assembly, a second assembly and a magnetic base. Among them, the first assembly and the second assembly are arranged above the magnetic base; A semi-circular groove is formed on one side of the first assembly, an arc-shaped protrusion is arranged on the inner wall of the semi-circular groove, and a plurality of threaded holes are formed on the opposite side of the first assembly; Two assembly screws arranged symmetrically are provided on each of the top and bottom surfaces of the first assembly; The layout of the second assembly is symmetrical with that of the first assembly. Among them, the semi-circular groove of the first assembly and the semi-circular groove of the second assembly are arranged oppositely, and the first assembly and the second assembly are connected by non-loosening screws passing through the oppositely arranged threaded holes; Four magnets arranged symmetrically are provided on the top surface of the magnetic base, and the magnets are arranged oppositely to the assembly screws.
2. The tooling device for PCBA soldering and repair according to claim 1, characterized in that: A thimble screw is arranged on the first assembly, and the end of the thimble screw passes through the first assembly and is located in the semi-circular groove.
3. A tooling device for PCBA soldering and repair according to claim 1, characterized in that: A limiting protrusion is arranged on the edge of the first assembly, and a limiting groove is formed on the edge of the second assembly opposite to the limiting protrusion, and the limiting protrusion is adapted to the limiting groove.
4. A tooling device for PCBA soldering and repair according to claim 1, characterized in that: Two L-shaped grooves arranged symmetrically are formed on each of the top and bottom surfaces of the first assembly and the second assembly; An L-shaped protrusion is arranged on the top surface of the magnetic base opposite to the L-shaped groove, and the L-shaped protrusion is adapted to the L-shaped groove.
5. A tooling device for PCBA soldering and repair according to claim 1, characterized in that: Force application grooves are formed on both side walls of the magnetic base.
6. A tooling device for PCBA soldering and repair according to claim 1, characterized in that: A placement groove is formed at the center of the top of the magnetic base.
7. A tooling device for PCBA soldering and repair according to claim 1, characterized in that: Both the top and bottom sides of the semi-circular groove extend to the top and bottom surfaces of the first assembly and the second assembly through slopes.
8. A tooling device for PCBA soldering and repair according to claim 1, characterized in that: The top and bottom surfaces of the first assembly and the second assembly adopt the same layout design.
9. The tooling device for PCBA soldering and repair according to claim 1, characterized in that: The assembly screw is set as a flat head carbon steel screw.
10. A tooling device for PCBA welding and repair according to claim 1, characterized in that: The outer contour of the magnet is annular, and the magnet is fixed to the magnetic base by a fastening screw.