Automatic frequency tracking ultrasonic welding power supply device and control method thereof

Abstract

The invention relates to an automatic frequency tracking ultrasonic welding power supply device and a control method thereof, the automatic frequency tracking ultrasonic welding power supply device comprises an automatic frequency tracking power supply group, the automatic frequency tracking power supply group is arranged in an inner cavity of a containing frame shell, the inner cavity of the containing frame shell is connected with a mounting rack, and the mounting rack is connected with the automatic frequency tracking power supply group from the upper side and the lower side; and the cold drying unit is arranged in an inner cavity of the cold drying frame shell, the cold drying unit comprises a first drying assembly, a second drying assembly and a cooling assembly, and the first drying assembly and the second drying assembly are arranged on the left side and the right side of the cooling assembly correspondingly. The cooling and drying unit is used for cooling the automatic frequency-tracking power pack, the cooling effect of the automatic frequency-tracking power pack can be improved by combining air cooling and water cooling heat dissipation, and meanwhile it can be avoided that condensed water vapor formed when the cooling assembly makes contact with high temperature directly makes contact with the automatic frequency-tracking power pack, so that the cooling efficiency of the automatic frequency-tracking power pack is improved. And normal operation of the automatic frequency tracking power pack is prevented from being influenced.

Description

Technical Field

[0001] The present invention relates to the field of ultrasonic welding, and in particular to an automatic frequency tracking ultrasonic welding power supply device and a control method thereof. Background Art

[0002] Ultrasonic welding is an advanced assembly technology that uses high-frequency vibrations to generate frictional heat, causing the contact surfaces to melt and bond. Its core principle is to convert 50 / 60Hz AC power into high-frequency electrical energy through an ultrasonic generator, which is then converted into mechanical vibrations of the same frequency through a transducer. The amplitude is then adjusted by an amplitude modulator before being transmitted to the welding head. The welding head accurately transmits the vibration energy to the joint of the workpiece, where frictional heat melts the plastic or metal, forming a molecular-level connection under pressure, and the welding strength can be close to the strength of the raw materials. The ultrasonic welding power supply unit is the core component of the ultrasonic welding system, responsible for converting ordinary power into high-frequency electrical energy, driving the transducer to generate mechanical vibrations, and thus achieving material welding. The ultrasonic welding power supply unit achieves welding through the following steps: converting AC power into high-frequency electrical energy; adjusting the output frequency in real time through the frequency tracking function to ensure consistency with the resonant frequency of the transducer, thereby improving energy transmission efficiency; and adjusting the output power according to welding requirements to ensure the stability and consistency of the welding process.

[0003] The automatic frequency tracking function of the ultrasonic welding power supply device is one of the core technologies that ensures an efficient, stable and reliable welding process. Compared with a fixed frequency, automatic frequency tracking can be adjusted in real time, and the frequency always matches the resonant point, making the welding quality stable and highly consistent. It can eliminate welding quality fluctuations caused by changes in the environment or equipment status, ensuring consistent welding results for each product. At the same time, it can reduce mechanical stress and energy consumption, and is more adaptable to complex, multi-condition or high-precision requirements.

[0004] However, an ultrasonic welding power supply device with an automatic frequency tracking function will emit a large amount of heat during power supply and automatic frequency tracking operations, which may affect the normal operation and service life of the power supply device.

[0005] For example, Chinese patent document CN215040375U discloses an automatic frequency-tracking ultrasonic welding power supply device, which uses an exhaust fan to draw air into the device to cool the inside of the device and ensure the convenience of the device. However, in this solution, the power supply device only relies on air cooling to dissipate heat, and the heat dissipation effect is limited. In addition, heat exchange with the external environment is required to achieve heat dissipation. However, when the external environment temperature is high, the air cooling heat dissipation effect is poor, and dust and the like will be brought into the power supply device during the exchange with the external environment. Although a filter is provided in the above application, it is difficult for the filter to achieve 100% interception, and the filter also needs to be cleaned, resulting in an increase in processing steps and increased labor costs.

[0006] However, there is an urgent need in the prior art for an automatic frequency tracking ultrasonic welding solution that can improve heat dissipation and ensure welding quality. Summary of the Invention

[0007] In view of the technical problems existing in the above-mentioned prior art, the present invention aims to provide an automatic frequency tracking ultrasonic welding power supply device and a control method thereof, which can overcome the defect of poor heat dissipation effect of the power supply device and ensure welding quality.

[0008] Specifically, the present invention solves the above technical problems through the following technical solutions: According to one aspect of the present invention, an automatic frequency tracking ultrasonic welding power supply device is provided, comprising a supporting base plate, a housing frame, a cold-drying frame, and a circulation assembly, wherein the housing frame and the cold-drying frame are respectively connected to the top of the supporting base plate, and the left and right sides of the housing frame and the cold-drying frame are respectively connected to each other through two circulation assemblies, and the circulation assemblies are used to drive airflow to circulate between the housing frame, the cold-drying frame, and the circulation assembly; An automatic frequency tracking power supply group is arranged in the inner cavity of the housing frame, and a mounting bracket is connected to the inner cavity of the housing frame. The mounting bracket is connected to the automatic frequency tracking power supply group from both the upper and lower sides; The cold drying unit is arranged in the inner cavity of the cold drying frame shell, and the cold drying unit includes a first drying component, a second drying component and a cooling component. The first drying component and the second drying component are respectively arranged on the left and right sides of the cooling component. The first drying component and the second drying component are used to dry the airflow, and the cooling component is used to cool the airflow.

[0009] According to the present invention, a cold-drying unit can be used to dissipate heat for the automatic frequency-tracking power supply group. The combination of air cooling and water cooling can improve the heat dissipation effect of the automatic frequency-tracking power supply group, while preventing the condensed water vapor formed by the cooling component contacting the high temperature from directly contacting the automatic frequency-tracking power supply group. The circulation component can make the air flow flow between the accommodating frame shell, the cold-drying frame shell and the circulation component, thereby forming a circulating airflow without the need for direct exchange with the external environment, so that the external environment has less influence on its heat dissipation effect, and there is no need to add dustproof nets and other structures to prevent dust from entering, thereby avoiding increasing processing procedures and labor costs.

[0010] Preferably, the circulation component includes a circulation fan, the circulation fan is connected to the top of the supporting base plate, and both inlet and outlet ends of the circulation fan are connected to connecting pipes; The ends of the two connecting pipes away from the circulation fan are both connected to the expansion pipes, one end of the expansion pipe away from the connecting pipe is connected to the side of the accommodating frame shell, and the other end of the expansion pipe away from the connecting pipe is connected to the side of the cold and dry frame shell.

[0011] In this technical solution, the circulation component is used to allow the air flow to circulate between the accommodating frame shell, the circulation component and the cold-drying frame shell.

[0012] Preferably, the mounting frame includes an upper mounting plate and a lower mounting plate, and the upper mounting plate and the lower mounting plate are respectively arranged on the upper and lower sides of the automatic frequency tracking power supply group; The upper mounting plate and the lower mounting plate are both connected to a plurality of support frames on one side away from the automatic frequency tracking power supply group, and one side of the support frame is connected to the inner wall of the accommodating frame shell.

[0013] Preferably, a plurality of communication ports are provided in the middle of the upper mounting plate and the lower mounting plate, and a plurality of heat dissipation holes are provided on both sides of the upper mounting plate and the lower mounting plate, and the heat dissipation holes are connected to the communication ports; The support frame is composed of a plurality of inclined columns distributed in a V-shaped structure.

[0014] In this technical solution, the automatic frequency chasing power supply group can be installed using the mounting bracket, and at the same time, the contact area between the automatic frequency chasing power supply group can be reduced, thereby increasing the contact area between the airflow and the automatic frequency chasing power supply group and improving the heat dissipation effect of the automatic frequency chasing power supply group.

[0015] Preferably, the first drying assembly and the second drying assembly each comprise a side movable net shell, a middle fixed net shell and a conveying auger, wherein the middle fixed net shell is connected to the inner wall of the cold drying frame shell; The edge of the middle fixed net shell is provided with a plurality of side movable net shells distributed in a circular array, and the inner cavity of the middle fixed net shell is provided with a conveying auger; A plate-shaped drying bag is placed in the inner cavity of the side movable net shell, and granular drying particles are placed in the inner cavity of the middle fixed net shell.

[0016] In the present invention, the moisture in the air flow can be absorbed by using the drying bag and the drying particles.

[0017] Preferably, the cold-drying frame shell includes a processing shell and a driving shell, the bottom of the processing shell is connected to the driving shell, and the bottom of the driving shell is connected to the top of the supporting base plate.

[0018] In the present invention, the cold-drying frame shell can be used to support and protect the first drying component, the second drying component, the cooling component and the power control module.

[0019] Preferably, the cooling assembly includes a fixed pipeline, a movable pipeline and a rotating pipeline, and movable pipelines are respectively provided on both sides of the fixed pipeline, and the upper and lower ends of the fixed pipeline are respectively fixedly connected to the upper and lower sides of the processing shell and the drive shell, and the upper and lower ends of the fixed pipeline extend to the inner cavities of the upper water collecting box and the lower water collecting box respectively, and the upper water collecting box is connected to the top of the processing shell, and the lower water collecting box is connected to the bottom of the drive shell; the upper and lower ends of the movable pipeline are both connected to the rotating pipeline, and the surface of the rotating pipeline is rotatably connected to the upper and lower sides of the processing shell and the drive shell, and the upper and lower ends of the movable pipeline extend to the inner cavities of the upper water collecting box and the lower water collecting box respectively; one side of the upper water collecting box and the lower water collecting box are both connected to the inlet and outlet pipelines.

[0020] In a preferred technical solution, the airflow can be cooled using a cooling component.

[0021] Preferably, the cold drying unit further comprises a power control module, the power control module comprising a drive transmission assembly, a central sub-control assembly and a side sub-control assembly, the drive transmission assembly, the central sub-control assembly and the side sub-control assembly being arranged in the inner cavity of the drive housing, and the central sub-control assembly and the side sub-control assembly being respectively connected to the drive transmission assembly in a transmission manner; The drive transmission assembly includes a transmission shaft and a drive source, the two ends of the transmission shaft are respectively connected to the inner wall of the drive housing for rotation, the surface of the transmission shaft is connected to three bevel gears 1 distributed in sequence, the side surfaces of the three bevel gears 1 are respectively engaged with three bevel gears 2, and the three bevel gears 2 are respectively connected to the side sub-control assemblies and the middle sub-control assembly on both sides for transmission; The driving source is connected to the inner wall of the driving housing, the output end of the driving source is connected to a driving gear, the side of the driving gear is meshed with a driven gear, and the driven gear is connected to the surface of the transmission shaft; The central sub-control assembly includes a central large gear and a central small gear, one side of the central large gear is connected to one side of the second bevel gear located in the middle, and both sides of the central large gear are meshed with central small gears, and the central small gear is connected to the surface of the rotating pipeline; The side control component includes a large side gear and a small side gear. One side of the large side gear is connected to one side of the bevel gear 2 located on the side. The side of the large side gear is meshed with a plurality of small side gears distributed in a circular array. The top of the large side gear is connected to the bottom end of the conveying auger, and the top of the small side gear is connected to the bottom end of the movable mesh shell.

[0022] In a preferred technical solution, the power control module can simultaneously drive the first drying component, the second drying component and the cooling component to rotate, thereby saving energy.

[0023] Preferably, the automatic frequency tracking power supply group includes a power supply module, a DC-AC conversion module, a matching module, a frequency control tracking module and an adjustment module.

[0024] In the present invention, the automatic frequency tracking power supply group can be used to realize the automatic frequency tracking of the ultrasonic welding power supply device.

[0025] According to another aspect of the present invention, a control method for an automatic frequency tracking ultrasonic welding power supply device is provided, characterized in that it includes the following steps: S1. Power supply: The power supply module supplies power, removes noise from the AC power, converts it into a DC voltage, and outputs it after filtering. S2. Voltage conversion: Using a DC-AC conversion module to receive the DC voltage output in step S, and converting the DC voltage into a bidirectional square wave voltage signal; S3, matching operation: using the matching module to receive the bidirectional square wave voltage signal in step S2 and convert it into a sinusoidal wave voltage signal to drive the transducer component of the ultrasonic welding equipment to work; S4, regulation control: using the regulation module to control the duty cycle of the DC-AC conversion module and adjust its output power; S5. Frequency control tracking: Shape the current phase of the sinusoidal voltage signal, calculate the phases of several sequential points, and output corresponding adjustment signals based on the leading or lagging state of the current phase and the phases of these sequential points. These adjustment signals control the regulation module to change the switching frequency of the DC-AC conversion module to adjust the output frequency and perform automatic frequency tracking.

[0026] According to the present invention, there are at least the following beneficial effects: Since the present invention utilizes a cold-drying unit to dissipate heat for the automatic frequency-chasing power supply group, and utilizes a combination of air cooling and water cooling to improve the heat dissipation effect of the automatic frequency-chasing power supply group, it can also prevent the condensed water vapor formed by the cooling component contacting the high temperature from directly contacting the automatic frequency-chasing power supply group. The circulation component allows the airflow to flow between the accommodating frame shell, the cold-drying frame shell and the circulation component, thereby forming a circulating airflow without the need for direct exchange with the external environment, so that the external environment has little effect on its heat dissipation effect, and there is no need to add dustproof nets and other structures to prevent dust from entering, thereby avoiding increasing processing procedures and labor costs.

[0027] Since the present invention utilizes a cooling component to cool the circulating airflow and utilizes a first drying component and a second drying component to dry the airflow, it is possible to prevent a high moisture content in the airflow from affecting the normal use of the automatic frequency tracking power supply unit. Moreover, the first drying component, the second drying component, and the cooling component all adopt a rotary structure, which can increase their contact area with the airflow, thereby improving the cooling and drying effects. At the same time, it can reduce the contact resistance between the airflow and the first drying component and the second drying component, and can change the position of the drying material to prevent a certain drying material from being in constant contact with the airflow with a high moisture content and losing its drying function.

[0028] Furthermore, since the first drying component, the second drying component and the cooling component of the present invention can all be powered by a power control module, the first drying component, the second drying component and the cooling component can be more energy-efficient when in use.

[0029] According to the present invention, the automatic frequency tracking power supply group can realize automatic frequency tracking of the ultrasonic welding power supply device, with high frequency tracking accuracy and accurate frequency modulation, which can eliminate welding quality fluctuations caused by changes in the environment or equipment status, and make the welding quality stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram showing the overall front three-dimensional structure of an automatic frequency tracking ultrasonic welding power supply device according to one embodiment of the present invention.

[0031] Figure 2 To show Figure 1 Schematic diagram of the overall rear three-dimensional structure of the automatic frequency tracking ultrasonic welding power supply device.

[0032] Figure 3 To show Figure 1 Schematic diagram of the overall side view of the automatic frequency tracking ultrasonic welding power supply device.

[0033] Figure 4 To show Figure 3 Schematic diagram of the AA cross-section structure in.

[0034] Figure 5 To show Figure 1 Schematic diagram of the three-dimensional structure of the connection relationship between the mounting frame, arc-shaped guide plate and reinforcement column of the automatic frequency tracking ultrasonic welding power supply device.

[0035] Figure 6 To show Figure 1 Schematic diagram of the three-dimensional structure of the cold-drying frame and cold-drying unit of the automatic frequency-tracking ultrasonic welding power supply device.

[0036] Figure 7 To show Figure 6 Schematic diagram of the front cross-sectional structure of the cold-drying frame shell and cold-drying unit.

[0037] Figure 8 To show Figure 6 Schematic diagram of the side cross-sectional structure of the cold-drying frame shell and the cold-drying unit.

[0038] Figure 9 To show Figure 6 Schematic diagram of the cross-sectional structure of the cold-drying frame shell and the cold-drying unit from top view.

[0039] Figure 10 To show Figure 6 Schematic diagram of the front three-dimensional structure of the connection relationship between the first drying component, the second drying component, the cooling component and the power control module of the automatic frequency tracking ultrasonic welding power supply device.

[0040] Figure 11 To show Figure 6 Schematic diagram of the bottom side three-dimensional structure of the connection relationship between the first drying component, the second drying component, the cooling component and the power control module of the automatic frequency tracking ultrasonic welding power supply device.

[0041] Figure 12 To show Figure 6 Schematic diagram of the bottom side of the three-dimensional structure of the connection relationship between the processing shell and the power control module of the automatic frequency tracking ultrasonic welding power supply device.

[0042] Figure 13 To show Figure 6 Schematic diagram of the internal cross-sectional structure of the processing shell and cold drying unit of the automatic frequency tracking ultrasonic welding power supply device.

[0043] Figure 14 To show Figure 6 Schematic diagram of the three-dimensional structure of the connection relationship between the side movable lattice shell, middle fixed lattice shell, center gear, transmission gear, internal gear ring and anti-slip rotating ring of the automatic frequency tracking ultrasonic welding power supply device.

[0044] Figure 15 To show Figure 1 Schematic diagram of the internal principle of the automatic frequency tracking power supply group of the automatic frequency tracking ultrasonic welding power supply device.

[0045] Figure 16 To show Figure 1 The figure is a flow chart of a control method of an automatic frequency tracking ultrasonic welding power supply device.

[0046] Description of Reference Numerals 1. Support the bottom plate; 2. Accommodate the frame; 3. Cold drying frame shell; 31. Processing shell; 32. Drive shell; 4. Circulation assembly; 41. Circulation fan; 42. Connecting pipes; 43. Expansion pipes; 5. Automatic frequency tracking power supply group; 51. Power supply module; 52. DC-AC conversion module; 53. Matching module; 54. Frequency control tracking module; 55. Adjustment module; 6. Mounting frame; 61. Upper mounting plate; 62. Lower mounting plate; 63. Support frame; 7. First drying component; 8. Second drying component; 9. Cooling assembly; 91. Fixed pipeline; 92. Movable pipeline; 93. Rotating pipeline; 94. Upper water collecting box; 95. Lower water collecting box; 96. Inlet and outlet pipelines; 10. Movable lattice shell; 11. Middle fixed lattice shell; 12. Conveying auger; 13. Drive assembly; 131. Transmission shaft; 132. Bevel gear 1; 133. Bevel gear 2; 134. Driving source; 135. Driving gear; 136. Driven gear; 14. Central sub-control assembly; 141. Central large gear; 142. Central small gear; 15. Edge sub-control assembly; 151. Edge large gear; 152. Edge small gear; 153. Center gear; 154. Transmission gear; 155. Internal gear ring; 156. Anti-slip rotating ring; 157. Support column; 16. Arc guide plate; 17. Strengthening column. DETAILED DESCRIPTION

[0047] The present invention will be further described below in conjunction with specific embodiments with reference to the accompanying drawings. However, this description is for illustrative purposes only and does not limit the present invention to the scope of the described embodiments.

[0048] Figures 1 to 15 It is a structural schematic diagram of an embodiment of the automatic frequency tracking ultrasonic welding power supply device of the present invention. Figure 16 The flow chart of its control method is shown in FIG.

[0049] like Figure 1-15As shown, the automatic frequency chasing ultrasonic welding power supply device of the present invention includes a supporting base plate 1, a accommodating frame shell 2, a cold drying frame shell 3 and a circulation component 4, the accommodating frame shell 2 and the cold drying frame shell 3 are respectively connected to the top of the supporting base plate 1, and the left and right sides of the accommodating frame shell 2 and the cold drying frame shell 3 are respectively connected to each other through two circulation components 4, and the circulation component 4 is used to drive the airflow to circulate between the accommodating frame shell 2, the cold drying frame shell 3 and the circulation component 4; an automatic frequency chasing power supply group 5, the automatic frequency chasing power supply group 5 is arranged at the inner cavity of the accommodating frame shell 2, and the inner cavity of the accommodating frame shell 2 is connected with a mounting bracket 6, and the mounting bracket 6 is connected to the automatic frequency chasing power supply group 5 from the upper and lower sides; a cold drying unit, the cold drying unit is arranged at the inner cavity of the cold drying frame shell 3, the cold drying unit includes a first drying component 7, a second drying component 8 and a cooling component 9, the first drying component 7 and the second drying component 8 are respectively arranged on the left and right sides of the cooling component 9, the first drying component 7 and the second drying component 8 are used to dry the airflow, and the cooling component 9 is used to cool the airflow.

[0050] In a preferred embodiment, a cold-drying unit can be used to dissipate heat for the automatic frequency-chasing power supply group 5. The combination of air cooling and water cooling can improve the heat dissipation effect of the automatic frequency-chasing power supply group 5, while preventing the cooling component 9 from directly contacting the condensed water vapor formed by high temperature with the automatic frequency-chasing power supply group 5. The circulation component 4 can make the air flow between the accommodating frame shell 2, the cold-drying frame shell 3 and the circulation component 4, thereby forming a circulating airflow without the need for direct exchange with the external environment, so that the external environment has less influence on its heat dissipation effect, and there is no need to add dustproof nets and other structures to prevent dust from entering, thereby avoiding increasing processing procedures and labor costs.

[0051] The circulation component 4 includes a circulation fan 41, which is connected to the top of the supporting base plate 1. Both inlet and outlet ends of the circulation fan 41 are connected to connecting pipes 42; the ends of the two connecting pipes 42 away from the circulation fan 41 are connected to expansion pipes 43, one end of the expansion pipes 43 away from the connecting pipes 42 is connected to the side of the accommodating frame shell 2, and the other end of the expansion pipes 43 away from the connecting pipes 42 is connected to the side of the cold drying frame shell 3.

[0052] In the present invention, the circulation component 4 is used to allow airflow to circulate between the accommodating frame 2 , the circulation component 4 and the cold-drying frame 3 .

[0053] When in use, the circulation fans 41 on both sides can drive the air flow to circulate between the accommodating frame shell 2, the cold and dry frame shell 3, the circulation fan 41, the connecting pipe 42 and the expansion pipe 43, so that the air flow can be used to dissipate heat for the automatic frequency chasing power supply group 5, thereby preventing the heat from affecting the normal use of the automatic frequency chasing power supply group 5.

[0054] The mounting frame 6 includes an upper mounting plate 61 and a lower mounting plate 62, and the upper mounting plate 61 and the lower mounting plate 62 are respectively arranged on the upper and lower sides of the automatic frequency tracking power supply group 5; the upper mounting plate 61 and the lower mounting plate 62 are connected to multiple groups of support frames 63 on the side away from the automatic frequency tracking power supply group 5, and one side of the support frame 63 is connected to the inner wall of the accommodating frame shell 2.

[0055] The upper mounting plate 61 and the lower mounting plate 62 are each provided with a plurality of connecting ports in the middle thereof, and a plurality of heat dissipation holes are provided on both sides of the upper mounting plate 61 and the lower mounting plate 62, and the heat dissipation holes are connected to the connecting ports; the support frame 63 is composed of a plurality of inclined columns distributed in a V-shaped structure.

[0056] In the present invention, the automatic frequency chasing power supply group 5 can be installed using the mounting bracket 6, and the contact area between the automatic frequency chasing power supply group 5 can be reduced, thereby increasing the contact area between the airflow and the automatic frequency chasing power supply group 5 and improving the heat dissipation effect of the automatic frequency chasing power supply group 5.

[0057] Arc guide plates 16 are provided on both sides of the mounting frame 6 . The arc guide plates 16 are arc-shaped. A plurality of reinforcing columns 17 are connected to the upper and lower sides of the arc guide plates 16 . One end of the reinforcing column 17 is connected to the inner wall of the accommodating frame 2 .

[0058] When in use, the arc-shaped guide plate 16 can disperse and guide the airflow to prevent the airflow from directly blowing the automatic frequency chasing power supply group 5, prevent the components in the automatic frequency chasing power supply group 5 from loosening, etc., and prevent the use of the automatic frequency chasing power supply group 5 from being affected.

[0059] The first drying component 7 and the second drying component 8 both include a side movable grid shell 10, a middle fixed grid shell 11 and a conveying auger 12. The middle fixed grid shell 11 is connected to the inner wall of the cold drying frame shell 3; a plurality of side movable grid shells 10 distributed in a circular array are arranged on the edge of the middle fixed grid shell 11, and a conveying auger 12 is arranged in the inner cavity of the middle fixed grid shell 11; a plate-shaped drying bag is placed in the inner cavity of the side movable grid shell 10, and granular drying particles are placed in the inner cavity of the middle fixed grid shell 11.

[0060] In this technical solution, the moisture in the air flow can be absorbed by using the drying bag and the drying particles.

[0061] During use, the airflow enters the accommodating frame shell 2 after primary drying, cooling and secondary drying, so that the airflow entering the accommodating frame shell 2 is low-temperature airflow, thereby heat dissipating the automatic frequency tracking power supply group 5 and circulating in sequence.

[0062] When the airflow enters the side movable grid shell 10 and the middle fixed grid shell 11, the drying bags and drying particles in the side movable grid shell 10 and the middle fixed grid shell 11 are used to dry the airflow. At this time, the drive transmission component 13 can drive the side sub-control component 15 to rotate, thereby respectively driving the side movable grid shell 10 and the conveying auger 12 to rotate, so that the airflow can fully contact the drying bags in the side movable grid shell 10, thereby improving the drying effect; when the conveying auger 12 rotates, it can drive the drying particles in the middle fixed grid shell 11 to move from bottom to top, and under the action of gravity, fall again into the lower part of the inner cavity of the middle fixed grid shell 11, thereby realizing the up and down movement of the drying particles, so that the airflow can fully contact the drying particles, thereby improving the drying effect.

[0063] The drying bag and the drying particles can be made of activated carbon or other materials with self-absorbing moisture function.

[0064] The cold drying frame shell 3 includes a processing shell 31 and a driving shell 32 . The bottom of the processing shell 31 is connected to the driving shell 32 , and the bottom of the driving shell 32 is connected to the top of the supporting base plate 1 .

[0065] The accommodating frame shell 2 is equipped with a maintenance door, which can be used to install and maintain the automatic frequency tracking power supply group 5; the top of the processing shell 31 is provided with a material access door, which can replace the drying materials in the side movable grid shell 10 and the middle fixed grid shell 11.

[0066] In this technical solution, the cold drying frame shell 3 can support and protect the first drying component 7, the second drying component 8, the cooling component 9 and the power control module.

[0067] The cooling assembly 9 includes a fixed pipeline 91, a movable pipeline 92 and a rotating pipeline 93. The movable pipeline 92 is respectively provided on both sides of the fixed pipeline 91. The upper and lower ends of the fixed pipeline 91 are respectively fixedly connected to the upper and lower sides of the processing shell 31 and the drive shell 32, and the upper and lower ends of the fixed pipeline 91 extend to the inner cavities of the upper water collecting box 94 and the lower water collecting box 95 respectively. The upper water collecting box 94 is connected to the top of the processing shell 31, and the lower water collecting box 95 is connected to the bottom of the drive shell 32; the upper and lower ends of the movable pipeline 92 are both connected to the rotating pipeline 93, the surface of the rotating pipeline 93 is rotatably connected to the upper and lower sides of the processing shell 31 and the drive shell 32, and the upper and lower ends of the movable pipeline 92 extend to the inner cavities of the upper water collecting box 94 and the lower water collecting box 95 respectively; one side of the upper water collecting box 94 and the lower water collecting box 95 are both connected to the inlet and outlet pipelines 96.

[0068] In this technical solution, the cooling component 9 can be used to cool the airflow.

[0069] When in use, the inlet and outlet pipes 96 on both sides are connected to the cooling water source and the collecting container respectively, wherein the cooling water source can be connected to the collecting container, and a refrigeration device is set in the cooling water source, so that the temperature of the water entering the upper inlet and outlet pipes 96 is lower, and then under the action of equipment such as a circulating water pump, the water can circulate in the cooling water source, the inlet and outlet pipes 96, the fixed pipe 91, the movable pipe 92, the rotating pipe 93 and the collecting container; the airflow can be cooled when passing through the fixed pipe 91 and the movable pipe 92. At this time, the drive assembly 13 can be used to drive the central subcontrol assembly 14 to rotate, thereby driving the movable pipes 92 on both sides to rotate, increasing the contact area between the movable pipe 92 and the airflow, and improving the efficiency of airflow cooling.

[0070] The cold drying unit also includes a power control module, which includes a drive transmission component 13, a central sub-control component 14 and a side sub-control component 15. The drive transmission component 13, the central sub-control component 14 and the side sub-control component 15 are arranged in the inner cavity of the drive shell 32, and the central sub-control component 14 and the side sub-control component 15 are respectively connected to the drive transmission component 13 in a transmission manner; the drive transmission component 13 includes a transmission shaft 131 and a driving source 134, and the two ends of the transmission shaft 131 are respectively connected to the inner wall of the drive shell 32 for rotation, and the surface of the transmission shaft 131 is connected to three sequentially distributed bevel gears 132, and the three side surfaces of the three bevel gears 132 are respectively engaged with three bevel gears 2 133, and the three bevel gears 2 133 are respectively connected to the side sub-control components 15 and the central sub-control component 14 on both sides in a transmission manner; the driving source 134 is connected to the inner wall of the drive shell 32, and the output end of the driving source 134 is connected to the main The driven gear 135, the side of the driving gear 135 is meshed with a driven gear 136, and the driven gear 136 is connected to the surface of the transmission shaft 131; the middle sub-control component 14 includes a middle large gear 141 and a middle small gear 142, one side of the middle large gear 141 is connected to one side of the bevel gear 2 133 located in the middle, and both sides of the middle large gear 141 are meshed with the middle small gear 142, and the middle small gear 142 is connected to the surface of the rotating pipeline 93; the side sub-control component 15 includes a side large gear 151 and a side small gear 152, one side of the side large gear 151 is connected to one side of the bevel gear 2 133 located on the side, and the side of the side large gear 151 is meshed with a plurality of side small gears 152 distributed in a ring array, the top of the side large gear 151 is connected to the bottom end of the conveying auger 12, and the top of the side small gear 152 is connected to the bottom end of the side movable lattice shell 10.

[0071] In the present invention, the power control module can simultaneously drive the first drying component 7, the second drying component 8 and the cooling component 9 to rotate, thereby saving energy.

[0072] When in use, the driving source 134 is used to drive the active gear 135 to rotate, thereby driving the driven gear 136 to rotate, and then driving the transmission shaft 131 to rotate. When the transmission shaft 131 rotates, it can drive the three bevel gears 132 to rotate, thereby respectively driving the corresponding bevel gears 2 133 to rotate; when the bevel gear 2 133 located in the middle rotates, it can drive the middle large gear 141 to rotate, thereby respectively driving the middle small gears 142 on both sides to rotate, and when the middle small gear 142 rotates, it can drive the corresponding movable pipeline 92 to rotate; the rotation of the bevel gears 2 133 located on both sides can respectively drive the corresponding side sub-control components 15 to rotate.

[0073] The automatic frequency tracking power supply group 5 includes a power supply module 51 , a DC-AC conversion module 52 , a matching module 53 , a frequency control tracking module 54 and an adjustment module 55 .

[0074] In the present invention, the automatic frequency tracking power supply group 5 can realize the automatic frequency tracking of the ultrasonic welding power supply device.

[0075] The bottom of the movable side mesh shell 10 is connected to a fixed shaft, the surface of the fixed shaft is rotatably connected to the bottom surface of the processing shell 31, and the bottom end of the fixed shaft is connected to the top of the side pinion 152; the bottom end of the conveying auger 12 is rotatably connected to the bottom surface of the processing shell 31.

[0076] The edge sub-control assembly 15 also includes a center gear 153, the bottom of the center gear 153 is connected to the top of the bevel gear 2 133 located on the side, the side of the center gear 153 is meshed and connected, the side of the center gear 153 is meshed and connected with a transmission gear 154, the side of the transmission gear 154 is meshed and connected with the inner side of the inner gear ring 155; the top of the inner gear ring 155 is connected to an anti-slip rotating ring 156, the bottom surface of the processing shell 31 is provided with a sliding opening, the side of the anti-slip rotating ring 156 is slidably connected to the bottom surface of the processing shell 31 through the sliding opening, and the top of the anti-slip rotating ring 156 is connected to the bottom of multiple edge movable mesh shells 10; the bottom surface of the processing shell 31 is connected to multiple support columns 157, and the bottom end of the support column 157 is connected to the inner wall of the bottom surface of the drive shell 32.

[0077] The power control module is described in detail below, in one embodiment: As an embodiment of the power control module, the power control module includes a drive transmission component 13, a central sub-control component 14 and side sub-control components 15 on both sides, wherein the side sub-control components 15 on both sides are composed of a large side gear 151 and a small side gear 152.

[0078] When in use, the drive transmission component 13 can be used to drive the central sub-control component 14 and the side sub-control components 15 on both sides to rotate respectively, that is, the corresponding bevel gear 2 133 drives the side large gear 151 to rotate, thereby driving multiple side small gears 152 to rotate. When the side large gear 151 rotates, it can drive the conveying auger 12 to rotate, and when the multiple side small gears 152 rotate, they can drive the side movable grid shell 10 to rotate.

[0079] In another second embodiment of the power control module: As an embodiment of a power control module, the difference between it and other embodiments is that the power control module includes a drive transmission component 13, a central sub-control component 14 and side sub-control components 15 on both sides, wherein the side sub-control component 15 on one side is composed of a large side gear 151 and a small side gear 152, and the side sub-control component 15 on the other side is composed of a central gear 153, a transmission gear 154, an inner gear ring 155, an anti-slip rotating ring 156 and a support column 157.

[0080] When in use, the drive transmission assembly 13 can respectively drive the central sub-control assembly 14 and the side sub-control assemblies 15 on both sides to rotate, that is, the bevel gear 2 133 on one side drives the central gear 153 to rotate, thereby driving the transmission gear 154 to rotate, and then driving the inner gear ring 155 to rotate, thereby driving the anti-slip rotating ring 156 to rotate, and then driving multiple side movable lattice shells 10 to rotate, wherein when the central gear 153 rotates, the conveying auger 12 can be driven to rotate; the bevel gear 2 133 on the other side drives the side large gear 151 to rotate, thereby driving multiple side small gears 152 to rotate, when the side large gear 151 rotates, the conveying auger 12 can be driven to rotate, and when the multiple side small gears 152 rotate, the side movable lattice shells 10 can be driven to rotate; in this embodiment, the area of ​​contact between the airflow and the side movable lattice shells 10 on both sides is larger, and the multiple side movable lattice shells 10 can be in contact with the airflow in turn, avoiding that a certain side movable lattice shell 10 is always in contact with the airflow first.

[0081] In another embodiment of the power control module: As another embodiment of the power control module, the difference between it and other embodiments is that the power control module includes a drive transmission component 13, a central sub-control component 14 and side sub-control components 15 on both sides, wherein the side sub-control components 15 on both sides are composed of a central gear 153, a transmission gear 154, an inner gear ring 155, an anti-slip rotating ring 156 and a support column 157.

[0082] When in use, the drive transmission component 13 can respectively drive the central sub-control component 14 and the side sub-control components 15 to rotate, that is, the corresponding bevel gear 2 133 drives the central gear 153 to rotate, thereby driving the transmission gear 154 to rotate, and then driving the inner gear ring 155 to rotate, thereby driving the anti-slip rotating ring 156 to rotate, and then driving multiple side movable mesh shells 10 to rotate, wherein the central gear 153 can drive the conveying auger 12 to rotate when it rotates.

[0083] Refer to the following Figure 16 The control method of the power supply device is described in detail. Figure 16 As shown, the control method includes the following steps: S1, power supply operation, power supply operation is performed through the power supply module 51, and the supplied AC power is de-noised, converted into DC voltage and output after filtering; S2, voltage conversion, using the DC-AC conversion module 52 to receive the DC voltage output in step S1, and convert the DC voltage into a bidirectional square wave voltage signal, providing a basic signal for the subsequent matching module; S3, matching operation, using the matching module 53 to receive the bidirectional square wave voltage signal in step S2 and convert it into a sine wave voltage signal to drive the transducer component of the ultrasonic welding equipment to ensure efficient conversion of electrical energy into mechanical vibration energy; S4, regulation control, using the regulation module 55 to control the duty cycle of the DC-AC conversion module 52 to adjust its output power; S5, frequency control tracking, shapes the current phase of the sinusoidal voltage signal, calculates the phases of several sequential points, and outputs corresponding adjustment signals based on the leading or lagging state of the current phase and the phases of these sequential points. These adjustment signals control the regulation module 55 to change the switching frequency of the DC-AC conversion module 52 to adjust the output frequency and perform automatic frequency tracking, which can improve the accuracy of frequency tracking.

[0084] The power supply module 51 includes a power supply, an EMI circuit, and a rectification and filtering circuit.

[0085] The DC-AC conversion module 52 is a full-bridge DC-AC conversion module.

[0086] The matching module 53 adopts an LC resonant circuit.

[0087] The regulation module 55 includes a PWM circuit, a phase-shifted full-bridge and a power control circuit and a detection circuit; the detection circuit in the regulation module 55 monitors the voltage and current at both ends of the transducer assembly in real time, provides feedback data for the frequency control tracking module, and provides a basis for overcurrent, overvoltage and other protections.

[0088] The frequency control tracking module 54 includes a frequency adjustment and control circuit, a phase shaping circuit, a phase determination processing circuit, and a voltage controlled oscillator.

[0089] In addition, the frequency control tracking module 54 also includes a protection circuit, which can output an alarm signal and shut down the ultrasonic output when frequency tracking failure is detected to prevent damage to the equipment.

[0090] The driving source 134 is a motor or other device that can output rotational kinetic energy.

[0091] The present invention has been described in detail through specific embodiments. However, those skilled in the art will appreciate that these are merely illustrative examples, and that those skilled in the art may make various changes or modifications to these embodiments. Such changes and modifications are intended to fall within the scope of protection of the present invention without departing from the principles and essence of the present invention. The scope of protection of the present invention is defined by the appended claims.

Claims

1. An automatic frequency tracking ultrasonic welding power supply device, comprising a supporting base plate (1), characterized in that: The automatic frequency tracking ultrasonic welding power supply device further comprises: a accommodating frame shell (2), a cold drying frame shell (3) and a circulation component (4), wherein the accommodating frame shell (2) and the cold drying frame shell (3) are respectively connected to the top of the supporting base plate (1), and the left and right sides of the accommodating frame shell (2) and the cold drying frame shell (3) are respectively connected to each other through two circulation components (4), and the circulation component (4) is used to drive the airflow to circulate between the accommodating frame shell (2), the cold drying frame shell (3) and the circulation component (4); An automatic frequency-tracking power supply group (5), the automatic frequency-tracking power supply group (5) being arranged in the inner cavity of the accommodating frame shell (2), the inner cavity of the accommodating frame shell (2) being connected to a mounting frame (6), the mounting frame (6) being connected to the automatic frequency-tracking power supply group (5) from both upper and lower sides; A cold drying unit is provided in the inner cavity of a cold drying frame shell (3), and comprises a first drying component (7), a second drying component (8) and a cooling component (9), wherein the first drying component (7) and the second drying component (8) are respectively provided on the left and right sides of the cooling component (9), the first drying component (7) and the second drying component (8) are used for drying the airflow, and the cooling component (9) is used for cooling the airflow.

2. The automatic frequency tracking ultrasonic welding power supply device according to claim 1, characterized in that: The circulation component (4) comprises a circulation fan (41), the circulation fan (41) is connected to the top of the supporting base plate (1), and both inlet and outlet ends of the circulation fan (41) are connected to connecting pipes (42); The ends of the two connecting pipes (42) away from the circulation fan (41) are both connected to the expansion pipe (43), wherein the end of one of the expansion pipes (43) away from the connecting pipe (42) is connected to the side of the accommodating frame shell (2), and the end of the other expansion pipe (43) away from the connecting pipe (42) is connected to the side of the cold drying frame shell (3).

3. The automatic frequency tracking ultrasonic welding power supply device according to claim 1, characterized in that: The mounting frame (6) comprises an upper mounting plate (61) and a lower mounting plate (62), wherein the upper mounting plate (61) and the lower mounting plate (62) are respectively arranged on the upper and lower sides of the automatic frequency tracking power supply group (5); The upper mounting plate (61) and the lower mounting plate (62) are both connected to a plurality of support frames (63) on the side away from the automatic frequency tracking power supply group (5), and one side of the support frame (63) is connected to the inner wall of the accommodating frame shell (2).

4. The automatic frequency tracking ultrasonic welding power supply device according to claim 3, characterized in that: A plurality of communication ports are provided in the middle of the upper mounting plate (61) and the lower mounting plate (62), and a plurality of heat dissipation holes are provided on both sides of the upper mounting plate (61) and the lower mounting plate (62), and the heat dissipation holes are connected to the communication ports; The support frame (63) is composed of a plurality of inclined columns distributed in a V-shaped structure.

5. The automatic frequency tracking ultrasonic welding power supply device according to claim 1, characterized in that: The first drying assembly (7) and the second drying assembly (8) both comprise a side movable net shell (10), a middle fixed net shell (11) and a conveying auger (12), wherein the middle fixed net shell (11) is connected to the inner wall of the cold drying frame shell (3); The edge of the middle fixed net shell (11) is provided with a plurality of side movable net shells (10) distributed in a ring array, and the inner cavity of the middle fixed net shell (11) is provided with a conveying auger (12); A plate-shaped drying bag is placed in the inner cavity of the side movable net shell (10), and granular drying particles are placed in the inner cavity of the middle fixed net shell (11).

6. The automatic frequency tracking ultrasonic welding power supply device according to claim 1, characterized in that: The cold drying frame shell (3) comprises a processing shell (31) and a driving shell (32); the bottom of the processing shell (31) is connected to the driving shell (32); and the bottom of the driving shell (32) is connected to the top of the supporting base plate (1).

7. The automatic frequency tracking ultrasonic welding power supply device according to claim 1, characterized in that: The cooling assembly (9) comprises a fixed pipeline (91), a movable pipeline (92) and a rotating pipeline (93), wherein movable pipelines (92) are respectively provided on both sides of the fixed pipeline (91). The upper and lower ends of the fixed pipeline (91) are respectively fixedly connected to the upper and lower sides of the processing shell (31) and the driving shell (32), and the upper and lower ends of the fixed pipeline (91) extend to the inner cavities of the upper water collecting box (94) and the lower water collecting box (95), respectively. The upper water collecting box (94) is connected to the top of the processing shell (31), and the lower water collecting box (95) is connected to the bottom of the driving shell (32); The upper and lower ends of the movable pipeline (92) are both connected to the rotating pipeline (93), and the surface of the rotating pipeline (93) is rotatably connected to the upper and lower sides of the processing shell (31) and the driving shell (32), and the upper and lower ends of the movable pipeline (92) extend to the inner cavities of the upper water collecting box (94) and the lower water collecting box (95), respectively. One side of the upper water collecting box (94) and the lower water collecting box (95) are both connected to an inlet and outlet pipe (96).

8. The automatic frequency tracking ultrasonic welding power supply device according to claim 1, characterized in that: The cold-drying unit further includes a power control module, which includes a drive transmission component (13), a central sub-control component (14), and a side sub-control component (15). The drive transmission component (13), the central sub-control component (14), and the side sub-control component (15) are arranged in the inner cavity of the drive housing (32), and the central sub-control component (14) and the side sub-control component (15) are respectively connected to the drive transmission component (13); The drive transmission assembly (13) includes a transmission shaft (131) and a drive source (134), the two ends of the transmission shaft (131) are respectively connected to the inner wall of the drive housing (32), the surface of the transmission shaft (131) is connected to three sequentially distributed bevel gears (132), the side surfaces of the three bevel gears (132) are respectively meshed and connected to three bevel gears (133), and the three bevel gears (133) are respectively connected to the side sub-control assemblies (15) and the middle sub-control assembly (14) on both sides. The driving source (134) is connected to the inner wall of the driving housing (32), the output end of the driving source (134) is connected to a driving gear (135), the side of the driving gear (135) is meshedly connected to a driven gear (136), and the driven gear (136) is connected to the surface of the transmission shaft (131); The central sub-control assembly (14) includes a central large gear (141) and a central small gear (142), one side of the central large gear (141) is connected to one side of the second bevel gear (133) located in the middle, and both sides of the central large gear (141) are meshedly connected to the central small gear (142), and the central small gear (142) is connected to the surface of the rotating pipeline (93); The side control assembly (15) includes a side large gear (151) and a side small gear (152), one side of the side large gear (151) is connected to one side of the second bevel gear (133) located on the side, and the side of the side large gear (151) is meshedly connected with a plurality of side small gears (152) distributed in a ring array, the top of the side large gear (151) is connected to the bottom end of the conveying auger (12), and the top of the side small gear (152) is connected to the bottom end of the side movable lattice shell (10).

9. The automatic frequency tracking ultrasonic welding power supply device according to claim 1, characterized in that: The automatic frequency tracking power supply group (5) comprises a power supply module (51), a DC-AC conversion module (52), a matching module (53), a frequency control tracking module (54) and an adjustment module (55).

10. A control method for the automatic frequency tracking ultrasonic welding power supply device according to any one of claims 1 to 9, characterized in that: The control method includes the following steps: S1, power supply operation, power supply operation is performed through the power supply module (51), and the supplied AC power is de-noised, converted into a DC voltage and output after filtering; S2, voltage conversion, using a DC-AC conversion module (52) to receive the DC voltage output in step S1, and convert the DC voltage into a bidirectional square wave voltage signal; S3, matching operation, using the matching module (53) to receive the bidirectional square wave voltage signal in step S2 and convert it into a sine wave voltage signal to drive the transducer component of the ultrasonic welding equipment to work; S4, regulating control, using the regulating module (55) to control the duty cycle of the DC-AC conversion module (52) to regulate the output power thereof; S5, frequency control tracking, shaping the current phase of the sinusoidal voltage signal, calculating the phases of several sequential points, and outputting corresponding adjustment signals according to the leading or lagging state of the current phase and the phases of these sequential points. These adjustment signals control the adjustment module (55) to change the switching frequency of the DC-AC conversion module (52) to adjust the output frequency and perform automatic frequency tracking.

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