Ultrasonic welding tool device
By designing an ultrasonic welding tooling device including a base, a press head and a press rod, the problem of poor sealing and high liquid leakage during the electrochemical gas sensor packaging process is solved, and more stable welding mold assembly and higher safety is achieved.
Patent Information
- Application Number
- CN202420564150.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-03-22
AI Technical Summary
The existing electrochemical gas sensor packaging methods include problems such as cumbersome glue curing packaging, hot-press packaging causing shell deformation, and inappropriate ultrasonic welding tooling resulting in poor sealing, rupture of pores and falling pins.
An ultrasonic welding tooling device is designed, including a base, a press head and a press rod. The base and press rod are fixed to the ultrasonic welding machine. The press head is movable, with a concave surface to prevent rupture of the air holes, and stainless steel material is used to prevent corrosion.
This device solves the problem of pin damage or falling off during ultrasonic packaging, enhances the sealing of ABS structural parts, reduces the risk of liquid leakage from electrochemical gas sensors, and improves welding safety.
Smart Images
Figure CN222679777U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of gas detectors and gas instruments and meters, in particular to the field of gas sensors, and specifically refers to an ultrasonic welding tooling device. Background Art
[0002] Gas sensors are core components in gas detectors and gas instruments. They mainly include infrared gas sensors, electrochemical gas sensors, catalytic combustion gas sensors, semiconductor gas sensors and optical gas sensors. Among them, electrochemical gas sensors have many advantages such as small size, high sensitivity, easy to carry and affordable. They are widely used in petroleum, chemical, coal mining, medical, environmental monitoring and other fields. Electrochemical sensors have low power consumption, their own chemical redox reactions can generate current, and output signal values in the form of current or voltage, thereby monitoring the gas concentration in the environment, playing an important role in early warning and monitoring. They are sentinels in the field of security, and therefore have become the most widely used type of gas sensor.
[0003] In order to prevent electrolyte leakage and ensure the gas tightness of the gas sensor, the electrochemical gas sensor needs to be sealed and packaged. The currently used sealing packaging methods mainly include glue curing packaging, hot pressing packaging and ultrasonic welding packaging.
[0004] Current common packaging methods and problems:
[0005] The glue curing and packaging operation is cumbersome. During the packaging process, the glue can easily penetrate into the sensor, causing the catalyst and electrolyte to fail, thus damaging the sensor.
[0006] Considering the cost and other issues, the electrochemical gas sensor housing is mainly assembled with ABS plastic parts. Hot pressing packaging will cause the sensor housing to deform or even melt due to heat, which is not conducive to the packaging of electrochemical gas sensors.
[0007] At the same time, the gas sensors assembled by the above two methods have a greater risk of leakage, so the common packaging method is ultrasonic welding packaging, but ultrasonic welding packaging requires different welding tools for different sensors, and inappropriate welding tools will lead to problems such as loose sensor sealing, pore rupture and pin falling during welding.
[0008] Therefore, there is an urgent need for a suitable ultrasonic welding tool for electrochemical gas sensors. Utility Model Content
[0009] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an ultrasonic welding tooling device which has the advantages of simple structure, convenient operation, and easy disassembly and assembly.
[0010] In order to achieve the above purpose, the ultrasonic welding tooling device of the utility model is as follows:
[0011] The ultrasonic welding tooling device has the following main features: the device comprises a base, a pressure head and a pressure rod; the base is fixed on the bottom plate platform of the ultrasonic welding machine, the base is fixed by the pressure rod, the pressure head is fixed on the upper part of the ultrasonic welding machine by a threaded head knob and a hexagonal screw; the base and the pressure rod are fixed statically, and the pressure head moves up and down following the body of the ultrasonic welding machine.
[0012] Preferably, the base includes a first table top, a second table top, a groove and a boss ring, the bottom and top of the first table top are both planes, the second table top is higher than the first table top, the groove is arranged at the exact center of the second table top, and the boss ring is arranged at a distance from the opening of the groove.
[0013] Preferably, the base further comprises a table top threaded hole, and the table top threaded hole is arranged on the first table top.
[0014] Preferably, the pressure head includes a threaded head, a pressure head threaded hole, a welding head and a concave surface. The pressure head is assembled on the ultrasonic welding machine body through the threaded head, and the pressure head is fixed to the ultrasonic welding machine body through the pressure head threaded hole. The welding head is arranged at the lower part of the pressure head, and the concave surface is arranged at the top of the welding head.
[0015] Preferably, the pressure rod includes a head threaded hole, a tail threaded hole and a support column, the head threaded hole and the tail threaded hole are respectively arranged at the head and the tail of the pressure rod, the head threaded hole is fixed to the body of the ultrasonic welding machine, the tail threaded hole is firmly docked with the table threaded hole of the base, and the height of the support column is the same as the height of the first table.
[0016] Preferably, the first table top is cylindrical or symmetrically rectangular, the second table top is cylindrical, and the bottom of the groove is flat or has a curved concave bottom.
[0017] Preferably, the height of the first table is 10-100 mm, the width is 10-100 mm, the height of the second table is 100-500 mm, the diameter of the groove is 20-30 mm, and the center depth is 20-40 mm.
[0018] Preferably, the diameter of the welding head is smaller than the diameter of the main body, and the welding head is conical or cylindrical.
[0019] Preferably, the depth of the concave surface is 5 to 20 mm.
[0020] Preferably, the pressure rod has a width of 10 to 50 mm and a thickness of 5 to 50 mm.
[0021] The ultrasonic welding tooling device of the utility model is adopted to solve the problem of pin damage or falling off during the ultrasonic packaging process. The ultrasonic high-energy welding is adopted to enhance the sealing of ABS structural parts, thereby reducing the risk of leakage of electrochemical gas sensors. The pressure head is provided with a concave surface to prevent the sensor pores from rupturing to a certain extent. Stainless steel can prevent strong acid and alkali corrosion. The pressure head is provided with a concave surface to prevent the sensor pores from rupturing to a certain extent. The ultrasonic welding mold provided by the device is firmly assembled, which can improve welding safety and can be applied to the sealing package of different electrochemical gas sensors. The device has a simple structure, is easy to operate, and is easy to disassemble and assemble. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a structural schematic diagram of the ultrasonic welding tooling device of the utility model.
[0023] Figure 2 It is a structural schematic diagram of the base of the ultrasonic welding tooling device of the utility model.
[0024] Figure 3 The utility model is a schematic diagram of the structure of the pressure head of the ultrasonic welding tooling device.
[0025] Figure 4 It is a cross-sectional view of the base AA of the ultrasonic welding tooling device of the utility model.
[0026] Figure 5 It is a partial cross-sectional schematic diagram of a base equipped with a welding sensor of the ultrasonic welding tooling device of the utility model.
[0027] Reference numerals:
[0028] 1 Base
[0029] 101 First Counter
[0030] 1011 table threaded hole
[0031] 102 Second Table
[0032] 103 grooves
[0033] 104 boss ring
[0034] 2 pressure head
[0035] 201 Main body
[0036] 202 thread head
[0037] 203 threaded hole for pressure head
[0038] 204 welding head
[0039] 205 Concave
[0040] 3 Pressure rod
[0041] 301 head threaded hole
[0042] 302 tail threaded hole
[0043] 303 support column DETAILED DESCRIPTION
[0044] In order to more clearly describe the technical content of the present invention, further description is given below in conjunction with specific embodiments.
[0045] The ultrasonic welding tooling device of the utility model comprises a base 1, a pressure head 2 and a pressure rod 3. The base 1 is fixed on the bottom plate platform of the ultrasonic welding machine, and the base 1 is fixed by the pressure rod 3. The pressure head 2 is fixed on the upper part of the ultrasonic welding machine through a threaded head 202 knob and is fixed by a hexagonal screw. The base 1 and the pressure rod 3 are fixed statically, and the pressure head 2 moves up and down following the body of the ultrasonic welding machine.
[0046] As a preferred embodiment of the utility model, the base 1 includes a first table top 101, a second table top 102, a groove 103 and a boss ring 104, the bottom and top of the first table top 101 are both planes, the second table top 102 is higher than the first table top 101, the groove 103 is arranged at the center of the second table top 102, and the boss ring 104 is arranged at a distance from the opening of the groove 103.
[0047] As a preferred embodiment of the present utility model, the base 1 further comprises a table top threaded hole 1011 , and the table top threaded hole 1011 is arranged on the first table top 101 .
[0048] As a preferred embodiment of the utility model, the pressure head 2 includes a threaded head 202, a pressure head threaded hole 203, a welding head 204 and a concave surface 205. The pressure head 2 is assembled on the ultrasonic welding machine body through the threaded head 202, and the pressure head 2 is fixed to the ultrasonic welding machine body through the pressure head threaded hole 203. The welding head 204 is arranged at the lower part of the pressure head 2, and the concave surface 205 is arranged at the top of the welding head 204.
[0049] As a preferred embodiment of the present utility model, the pressure rod 3 includes a head threaded hole 301, a tail threaded hole 302 and a support column 303. The head threaded hole 301 and the tail threaded hole 302 are respectively arranged at the head and the tail of the pressure rod 3. The head threaded hole 301 is fixed to the body of the ultrasonic welding machine, and the tail threaded hole 302 is firmly docked with the table threaded hole 1011 of the base 1. The height of the support column 303 is the same as the height of the first table 101.
[0050] As a preferred embodiment of the present invention, the first table 101 is cylindrical or symmetrically rectangular, the second table 102 is cylindrical, and the bottom of the groove 103 is flat or has a curved concave bottom.
[0051] As a preferred embodiment of the utility model, the height of the first table 101 is 10-100 mm, the width is 10-100 mm, the height of the second table 102 is 100-500 mm, the diameter of the groove 103 is 20-30 mm, and the center depth is 20-40 mm.
[0052] As a preferred embodiment of the present invention, the diameter of the welding head 204 is smaller than the diameter of the main body 201, and the welding head 204 is a cone or cylinder.
[0053] As a preferred embodiment of the present invention, the depth of the concave surface 205 is 5 to 20 mm.
[0054] As a preferred embodiment of the present utility model, the compression rod 3 has a width of 10 to 50 mm and a thickness of 5 to 50 mm.
[0055] In a specific implementation of the utility model, the purpose is to solve the problem of pin falling off of the electrochemical gas sensor during ultrasonic packaging, enhance the air tightness of the structural parts, reduce the risk of liquid leakage of the electrochemical gas sensor, and prevent the pores of the electrochemical gas sensor from rupturing.
[0056] as follows Figures 1 to 4 As shown, the ultrasonic welding tool comprises a base 1 and a pressure head 2, wherein the base 1 is designed to include a first table 101, a table threaded hole 1011, a second table 102, a groove 103 and a boss ring 104. The pressure head 2 includes a pressure rod body 201, a threaded head 202, a pressure head threaded hole 203, a welding head 204 and a concave surface 205. The pressure rod 3 includes a head threaded hole 301, a tail threaded hole 302 and a support column 303.
[0057] The welding tooling of this patent is detachable, easy to replace and use for other welding, and can be applied to the packaging of different types of electrochemical gas sensors;
[0058] The welding tooling provided by this patent is made of stainless steel, which is resistant to acid and alkali corrosion and mechanical wear;
[0059] The base 1 is provided with a first table top 101, which can be cylindrical or symmetrically rectangular, with a flat bottom and a flat top, a height of 10 to 100 mm, and a width of 10 to 100 mm. A 1011 is provided on the first table top 101 to fix the base 1.
[0060] A pressure rod 3 is provided in the device, and threaded holes are provided at the head and tail of the pressure rod 3. The threaded hole 301 at the head is fixed to the body of the ultrasonic welding machine, and the threaded hole 302 at the tail is firmly docked with the threaded hole 1011 on the table of the base 1. The pressure rod 3 has a support column 303, and the height of the support column 303 is consistent with the height of the first table 101. The setting of the pressure rod 3 further enhances the stability of the base 1. The width of the pressure rod 3 is 10 to 50 mm, the thickness is 5 to 50 mm, and the length is designed according to actual needs, and the quantity is 2 to 4.
[0061] The second table 102 is higher than the first table 101, and is cylindrical, with a height of 100 to 500 mm. A groove 103 with a diameter of φ20 to 30 mm is arranged in the center of the second table 102, which is used to place the electrochemical gas sensor during packaging, and the center depth of the groove 103 is 20 to 40 mm. The bottom can be flat or with a curved concave bottom;
[0062] A boss ring 104 is designed 8 to 15 mm away from the opening of the groove 103. The width of the boss ring 104 is 0.5 to 2 mm, which can keep the electrochemical gas sensor in a suspended state to prevent the pins of the sensor from being pushed out by the bottom during welding rotation, or to prevent the pins from colliding with the tooling and causing the pins to fall off or be damaged.
[0063] The pressure head 2 is provided with a threaded head 202, which is convenient for assembly onto the body of the ultrasonic welding machine, and is provided with a pressure head threaded hole 203, which further secures the pressure head 2 to the body of the ultrasonic welding machine, and prevents the pressure head 2 from loosening and displacement due to the high energy of the ultrasonic welding machine, thereby improving welding safety. A welding head 204 is provided at the lower part of the pressure head 2. The welding head 204 has a smaller diameter than the main body 201 and can be a cone or a cylinder. A concave surface 205 is provided at the top of the welding head 204, and the depth of the concave surface 205 is 5 to 20 mm. During the packaging process, the setting of the concave surface 205 can reduce the diffusion of ultrasonic energy and cleverly avoid the rupture of the pores of the electrochemical gas sensor.
[0064] Before ultrasonic welding, the base 1 is fixed to the bottom platform of the ultrasonic welding machine with screws, and the base 1 is further fixed with the pressure rod 3. Then the pressure head 2 is turned on the upper part of the ultrasonic welding machine with the threaded head 202 and further fixed with the hexagonal screw. The base 1 and the pressure rod 3 are fixed statically, and the pressure head 2 can move up and down with the ultrasonic welding machine body. By adjusting the parameters of the ultrasonic welding machine, the up and down movement amplitude and frequency of the pressure head 2 can be roughly adjusted.
[0065] When the electrochemical gas sensor is packaged, the ABS empty shell is debugged first, the ultrasonic frequency of the ultrasonic welding machine is debugged to 20-70 Hz, the ultrasonic load amplitude is debugged to 20-80%, the welding time is debugged to 0.2-1 s, and the pressure holding time is debugged to 0.1-1 s. The debugged parameters are saved, and then the electrochemical sensor assembled with the electrode and the electrode liquid is placed in the groove 103, ultrasonic welding is performed, and the ABS is welded and sealed. By adjusting the parameters, the sealing of the electrochemical gas sensor can be increased, thereby reducing the risk of sensor leakage.
[0066] The specific implementation scheme of this embodiment can refer to the relevant description in the above embodiment, which will not be repeated here.
[0067] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.
[0068] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" refers to at least two.
[0069] Any process or method description in the flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.
[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0071] The ultrasonic welding tooling device of the utility model is adopted to solve the problem of pin damage or falling off during the ultrasonic packaging process. The ultrasonic high-energy welding is adopted to enhance the sealing of ABS structural parts, thereby reducing the risk of leakage of electrochemical gas sensors. The pressure head is provided with a concave surface to prevent the sensor pores from rupturing to a certain extent. Stainless steel can prevent strong acid and alkali corrosion. The pressure head is provided with a concave surface to prevent the sensor pores from rupturing to a certain extent. The ultrasonic welding mold provided by the device is firmly assembled, which can improve welding safety and can be applied to the sealing package of different electrochemical gas sensors. The device has a simple structure, is easy to operate, and is easy to disassemble and assemble.
[0072] In this specification, the utility model has been described with reference to its specific embodiments. However, it is obvious that various modifications and changes can be made without departing from the spirit and scope of the utility model. Therefore, the description and drawings should be regarded as illustrative rather than restrictive.
Claims
1. An ultrasonic welding tooling device, characterized in that: The device includes a base, a pressure head and a pressure rod. The base is fixed on the bottom plate platform of the ultrasonic welding machine and is fixed by the pressure rod. The pressure head is fixed on the upper part of the ultrasonic welding machine through a threaded head knob and a hexagonal screw. The base and the pressure rod are fixed statically, and the pressure head moves up and down following the body of the ultrasonic welding machine.
2. The ultrasonic welding tooling device according to claim 1, characterized in that: The base includes a first table top, a second table top, a groove and a boss ring. The bottom and top of the first table top are both planes, the second table top is higher than the first table top, the groove is arranged at the center of the second table top, and the boss ring is arranged at a distance from the opening of the groove.
3. The ultrasonic welding tooling device according to claim 2, characterized in that: The base also includes a table top threaded hole, and the table top threaded hole is arranged on the first table top.
4. The ultrasonic welding tooling device according to claim 1, characterized in that: The pressure head includes a threaded head, a pressure head threaded hole, a welding head and a concave surface. The pressure head is assembled on the ultrasonic welding machine body through the threaded head, and the pressure head is fixed to the ultrasonic welding machine body through the pressure head threaded hole. The welding head is arranged at the lower part of the pressure head, and the concave surface is arranged at the top of the welding head.
5. The ultrasonic welding tooling device according to claim 1, characterized in that: The pressure rod includes a head threaded hole, a tail threaded hole and a support column. The head threaded hole and the tail threaded hole are respectively arranged at the head and the tail of the pressure rod. The head threaded hole is fixed to the body of the ultrasonic welding machine, and the tail threaded hole is firmly connected to the table threaded hole of the base. The height of the support column is the same as the height of the first table.
6. The ultrasonic welding tooling device according to claim 2, characterized in that: The first table top is cylindrical or symmetrically rectangular, the second table top is cylindrical, and the bottom of the groove is flat or concave with an arc.
7. The ultrasonic welding tooling device according to claim 2, characterized in that: The height of the first table is 10-100 mm, the width is 10-100 mm, the height of the second table is 100-500 mm, the diameter of the groove is 20-30 mm, and the center depth is 20-40 mm.
8. The ultrasonic welding tooling device according to claim 4, characterized in that: The diameter of the welding head is smaller than the diameter of the main body, and the welding head is a cone or a cylinder.
9. The ultrasonic welding tooling device according to claim 4, characterized in that: The depth of the concave surface is 5 to 20 mm.
10. The ultrasonic welding tooling device according to claim 1, characterized in that: The pressure rod has a width of 10 to 50 mm and a thickness of 5 to 50 mm.