Ultrasonic moving seam welder

Abstract

The invention provides an ultrasonic moving seam welder which comprises a workbench, a plurality of supporting legs are fixed to the bottom of the workbench, a supporting base is installed on the workbench, a containing groove is formed in the supporting base, a lead screw is movably arranged in the containing groove, and a moving table is slidably arranged in the containing groove; the screw rod penetrates through the movable table and is in threaded connection with the movable table, an ultrasonic roll welding system is installed on the movable table and comprises an ultrasonic generation system, an ultrasonic vibration system, a roll welding execution system and a pressurization system, two side seats are symmetrically fixed to the movable table, a sliding groove is formed in one side of each side seat, and the sliding grooves are communicated with the ultrasonic generation system. A sliding seat is slidably arranged in the sliding groove, side rods are fixed to the two sides of the sliding seat through connecting rods, and auxiliary pressing wheels are movably arranged on the side rods, and the problems that when traditional equipment is used for welding, deformation of a welding area is difficult to control, and the flatness of a welding seam is affected are solved.

Description

Technical Field

[0001] The invention relates to the field of welding, in particular to an ultrasonic mobile seam welding machine. Background Art

[0002] Ultrasonic mobile seam welding machine is a special equipment that uses ultrasonic vibration energy to achieve continuous welding of metal materials. With its advantages of high welding efficiency, small heat-affected zone and good weld sealing, it is widely used in new energy power battery tab welding, lightweight thin plate splicing of automobiles, connection of metal parts of home appliances, welding of thin-walled components in aerospace and other fields. It performs particularly well in lap or seam welding of thin metal materials such as aluminum, copper, and stainless steel with a thickness of 0.1-2mm.

[0003] The core principle of ultrasonic roll welding is to concentrate high-frequency vibration energy and pressure on the contact point of the workpiece through the main roller, so that the local metal can be welded during plastic deformation.

[0004] However, during this process, the instantaneous pressure and vibration impact of the main roller can easily cause the workpiece to produce a "warping effect" before and after the welding area. That is, the edge of the workpiece before welding is arched upward due to lack of restraint (front arch), and the high-temperature area after welding collapses downward due to stress release during cooling and shrinkage (back collapse).

[0005] Traditional equipment lacks a targeted suppression structure, resulting in wavy deformation on both sides of the weld. Especially in the welding of stainless steel thin plates, the deformation can reach 0.5-2mm. An additional leveling process is required later, which not only reduces production efficiency but may also damage the weld strength due to secondary processing.

[0006] Therefore, it is necessary to provide a new ultrasonic mobile seam welding machine to solve the above-mentioned technical problems. Summary of the Invention

[0007] In order to solve the above technical problems, the present invention provides an ultrasonic mobile seam welding machine, which solves the problem that the deformation of the welding area is difficult to control during welding with traditional equipment, thereby affecting the flatness of the weld.

[0008] The ultrasonic mobile seam welding machine provided by the present invention comprises a workbench with a plurality of supporting legs fixed at the bottom, a support base is installed on the workbench, a placement groove is opened on the support base, and a screw rod is movably arranged inside the placement groove; A movable platform is slidably provided inside the placement groove, the screw rod passes through the movable platform and is threadedly connected thereto, an ultrasonic roll welding system is installed on the movable platform, and the ultrasonic roll welding system includes an ultrasonic generating system, an ultrasonic vibration system, a roll welding execution system and a pressurizing system; Two side seats are symmetrically fixed on the movable platform, a slide groove is opened on one side of the side seat, a slide seat is slidably arranged inside the slide groove, side rods are fixed on both sides of the slide seat through connecting rods, auxiliary pressure wheels are movably arranged on the side rods, and the two auxiliary pressure wheels are symmetrically arranged on both sides of the seam welding execution system.

[0009] In a preferred embodiment, a threaded rod is movably provided inside each of the two slide grooves, and the threaded rod passes through the slide seat and is threadedly connected thereto; The bottoms of the two threaded rods extend out of the side seats and are installed with first bevel gears. Two limit seats are fixed at intervals on one side of the movable platform. A transmission shaft is movably arranged between the two limit seats. Two second bevel gears are installed at intervals on the transmission shaft. The two second bevel gears are respectively engaged with the two first bevel gears.

[0010] In a preferred embodiment, a first motor is installed on one side of the moving platform, and an output end of the first motor is connected to the transmission shaft via a coupling.

[0011] In a preferred embodiment, a closed transmission is adopted between the first bevel gear and the second bevel gear.

[0012] In a preferred embodiment, a workpiece placement platform is fixed on the workbench, a fixed seat is fixed on one side of the workpiece placement platform, a rotating shaft is movably provided on the fixed seat, and two movable sleeves are slidably provided on the rotating shaft; A positioning plate is fixed on one side of the movable sleeve.

[0013] In a preferred embodiment, a second motor is installed on one side of the workpiece placement table, and an output end of the second motor is connected to the rotating shaft via a coupling.

[0014] In a preferred embodiment, a plurality of limiting holes are provided at intervals on the rotating shaft, a positioning pin is provided above the movable sleeve, and the bottom of the positioning pin is inserted into the movable sleeve and extends into the limiting hole.

[0015] In a preferred embodiment, a spring is sleeved on the positioning pin, a pull plate is fixed on the top of the positioning pin, one end of the spring is fixed on the pull plate, and the other end of the spring is fixed on the movable sleeve.

[0016] In a preferred embodiment, a side bracket is fixed on one side of each of the two side rods, and a dust suction pipe is installed on the side bracket. One end of the dust suction pipe is connected to the dust inlet pipe of the industrial vacuum cleaner, and the other end is located on one side of the auxiliary pressure wheel, which can remove welding chips generated by welding on the workpiece surface.

[0017] Beneficial effects of the present invention: 1. Improve welding stability and quality: The auxiliary pressure rollers on both sides effectively reduce warping and wrinkling in thin material welding through the continuous action of "pre-pressing - main welding - pressure holding", greatly improving the flatness of the weld. The positioning plate and auxiliary pressure rollers work together to limit workpiece deviation, further reducing the weld misalignment rate.

[0018] 2. The auxiliary pressure roller shares the workpiece guiding and positioning functions, reducing unnecessary wear of the main roller; the dust suction pipe prevents welding chips from adhering to the roller surface, reduces the failure probability of the ultrasonic vibration system, and greatly extends the equipment maintenance cycle.

[0019] 3. During processing, after the worker places the workpiece to be welded on the workpiece placement table, he starts the second motor to drive the rotating shaft to rotate, which can make the positioning plate swing to a position in contact with the workpiece and then fix the workpiece, realizing rapid clamping of workpieces of different sizes and avoiding lateral deviation during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The main structure of the ultrasonic mobile seam welding machine provided by the present invention is a three-dimensional view Figure 1 ; Figure 2 for Figure 1 A schematic diagram of the enlarged structure of shown; Figure 3 for Figure 1 The enlarged structural diagram of B is shown; Figure 4 A schematic structural diagram of the auxiliary pressure wheel provided by the present invention; Figure 5 The main structure of the ultrasonic mobile seam welding machine provided by the present invention is a three-dimensional view Figure 2 ; Figure 6 This is a top view of the main structure of the ultrasonic mobile seam welding machine provided by the present invention.

[0021] Numbers in the figure: 1. workbench; 2. support leg; 3. support seat; 4. placement groove; 5. screw; 6. movable table; 7. ultrasonic roll welding system; 8. roll welding execution system; 9. side seat; 10. slide groove; 11. slide seat; 12. connecting rod; 13. side rod; 14. auxiliary pressure roller; 15. threaded rod; 16. first bevel gear; 17. limit seat; 18. transmission shaft; 19. second bevel gear; 20. first motor; 21. workpiece placement table; 22. fixed seat; 23. rotating shaft; 24. movable sleeve; 25. positioning plate; 26. second motor; 27. limiting hole; 28. positioning pin; 29. ​​spring; 30. pull plate; 31. side bracket; 32. dust suction duct. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 as well as Figure 6 ,in Figure 1 The main structure of the ultrasonic mobile seam welding machine provided by the present invention is a three-dimensional view Figure 1 ; Figure 2 for Figure 1 A schematic diagram of the enlarged structure of shown; Figure 3 for Figure 1 The enlarged structural diagram of B is shown; Figure 4 A schematic structural diagram of the auxiliary pressure wheel provided by the present invention; Figure 5 The main structure of the ultrasonic mobile seam welding machine provided by the present invention is a three-dimensional view Figure 2 ; Figure 6 This is a top view of the main structure of the ultrasonic mobile seam welding machine provided by the present invention.

[0024] In the specific implementation process, Figures 1-6 As shown, it includes several supporting legs fixed at the bottom, a support base 2 installed, a workbench installed with a support base, a support base 1 installed, the workbench installed with a support base 1, a support base installed on the support base, a support base 3 installed, the support base installed with a placement groove on the support base, a support base 4 installed, the placement groove is installed with the support base 4, a screw rod is movably arranged inside the support base, a support base 5 is installed, and the screw rod 5 is driven by a motor to rotate, which can drive the support base 3 to slide along the placement groove 4.

[0025] The placement groove is equipped with a support seat 4, which is internally slidingly provided with a mobile platform, which is equipped with a support seat 6, and a support seat. The screw is equipped with a support seat 5, which is installed on the support seat and penetrates the mobile platform, which is equipped with a support seat 6 and is threadedly connected to the support seat. The mobile platform is equipped with a support seat 6, and an ultrasonic roll welding system is installed on the support seat. The ultrasonic roll welding system is equipped with a support seat 7, which includes an ultrasonic generating system, an ultrasonic vibration system, a roll welding execution system, a support seat 8, and a pressurizing system. The core function of the ultrasonic generating system is to convert the industrial frequency electricity 220V / 380V equipped with a support seat into a high-frequency electrical signal (usually 15kHz, 20kHz, 30kHz, etc.) to provide an energy source for welding, including: Ultrasonic generator: Generates high-frequency electrical signals through electronic circuits (such as oscillation circuits, amplification circuits), and can adjust parameters such as frequency and power to ensure stable output; The ultrasonic vibration system is responsible for converting high-frequency electrical signals into mechanical vibrations (ultrasonic vibrations) and transmitting them to the welding part, including: Transducer: It uses the piezoelectric effect (such as piezoelectric ceramics) to convert high-frequency electrical signals into longitudinal mechanical vibrations and is the core component of energy conversion.

[0026] Amplitude transformer: connects the transducer and the roller electrode. Its function is to amplify the amplitude of the transducer output (adjust the amplitude according to welding requirements) and efficiently transmit vibration energy. The material is usually high-strength alloy (such as titanium alloy, alloy steel).

[0027] The roll welding execution system 8 is the key structure for achieving continuous roll welding. Its core is to complete the local welding of metals through the rolling of the roller electrode and the coordination of ultrasonic vibration, including: Roller electrode: This contacts the workpiece and transmits ultrasonic vibration and pressure. Its surface must be wear-resistant (e.g., chrome plating or carbide alloy), and its shape must be designed according to the weld requirements (e.g., flat roller, special-shaped roller). The roller must be rotatable to ensure continuous welding.

[0028] Roller drive mechanism: drives the roller to rotate (such as servo motor + reducer), controls the rolling speed (matches the welding rhythm), and ensures a uniform weld.

[0029] Pressurization system: A certain amount of pressure needs to be applied to the workpiece during welding (to ensure close contact between the workpieces and promote the conversion of ultrasonic energy into local heat energy), including: Pressurizing device: usually a pneumatic (cylinder), hydraulic or servo-electric mechanism, which can adjust the pressure (according to the material thickness and material setting) and ensure that the pressure is stably transmitted to the roller electrode.

[0030] Pressure regulating components: such as pressure regulating valves and pressure sensors, to achieve precise control and feedback of pressure.

[0031] Two side seats 9 are symmetrically fixed on the movable platform 6, and a slide groove 10 is provided on one side of the side seat 9. A slide seat 11 is slidingly arranged inside the slide groove 10. Side rods 13 are fixed on both sides of the slide seat 11 through connecting rods 12. Side brackets 31 are fixed on one side of the two side rods 13. A dust suction pipe 32 is installed on the side bracket 31. One end of the dust suction pipe 32 is connected to the dust inlet pipe of the industrial vacuum cleaner, and the other end is located on the side of the auxiliary pressure wheel 14, which can remove welding chips generated by welding on the workpiece surface.

[0032] An auxiliary pressure wheel 14 is movably provided on the side rod 13, and the two auxiliary pressure wheels 14 are symmetrically arranged on both sides of the seam welding execution system 8. A threaded rod 15 is movably provided inside the two chutes 10. The threaded rod 15 passes through the slide 11 and is threadedly connected thereto. The bottoms of the two threaded rods 15 extend out of the side seat 9 and are installed with a first bevel gear 16. Two limit seats 17 are fixed at intervals on one side of the movable platform 6. A transmission shaft 18 is movably provided between the two limit seats 17. Two second bevel gears 19 are installed on the transmission shaft 18 at intervals. The two second bevel gears 19 are respectively connected to the two first bevel gears 16 are meshed with each other, and a first motor 20 is installed on one side of the movable table 6. The output end of the first motor 20 is connected to the transmission shaft 18 through a coupling. During processing, the first motor 20 adjusts the height of the auxiliary pressure wheel 14 through the bevel gear transmission to make it in close contact with the surface of the workpiece, and uses rolling friction to move synchronously with the workpiece, eliminating the initial warping of the workpiece before welding with the main roller (pre-pressing), and suppressing cooling rebound (maintaining pressure) after welding, to ensure that the workpiece is always in a flat state; a closed transmission is adopted between the first bevel gear 16 and the second bevel gear 19, which is dust-proof and waterproof, thereby increasing its service life.

[0033] A workpiece placement table 21 is fixed on the workbench 1, and a fixed seat 22 is fixed on one side of the workpiece placement table 21. A rotating shaft 23 is movably provided at the fixed seat 22, and two movable sleeves 24 are slidably provided on the rotating shaft 23. A positioning plate 25 is fixed on one side of the movable sleeve 24. A second motor 26 is installed on one side of the workpiece placement table 21, and the output end of the second motor 26 is connected to the rotating shaft 23 through a coupling. During processing, after the staff places the workpiece to be welded on the workpiece placement table 21, the second motor 26 is started to drive the rotating shaft 23 to rotate, so that the positioning plate 25 can be swung to a position in contact with the workpiece and then fix the workpiece, thereby realizing rapid clamping of workpieces of different sizes and avoiding lateral displacement during welding.

[0034] A number of limiting holes 27 are provided on the rotating shaft 23 at intervals, and a positioning pin 28 is provided above the movable sleeve 24. The bottom of the positioning pin 28 is inserted into the movable sleeve 24 and extends into the limiting hole 27. A spring 29 is sleeved on the positioning pin 28, and a pull plate 30 is fixed on the top of the positioning pin 28. One end of the spring 29 is fixed on the pull plate 30, and the other end of the spring 29 is fixed on the movable sleeve 24. According to the size of the workpiece, the staff only needs to pull the pull plate 30 to drive the positioning pin 28 to disengage from the limiting hole 27 to move and adjust the position of the movable sleeve 24 along the rotating shaft 23. After the movement is completed, the pull plate 30 is released. Under the action of the spring 29, the positioning pin 28 re-enters the limiting hole 27 to complete the fixation of the movable sleeve 24.

[0035] The working principle of the present invention is as follows: when the device is used and mobile seam welding is performed, the first motor 20 is started to drive the transmission shaft 18 to rotate. Under the transmission action of the two first bevel gears 16 and the two second bevel gears 19, the two threaded rods 15 rotate simultaneously in the same direction, so that the slide 11 moves downward along the slide groove 10, and then the auxiliary pressure wheel 14 moves downward to the contact point of the workpiece. The auxiliary pressure wheel 14 moves synchronously with the workpiece by utilizing rolling friction, eliminates the initial warping of the workpiece before welding (pre-pressing), and suppresses cooling rebound (pressure maintenance) after welding, ensuring that the workpiece is always in a flat state. During processing, after placing the workpiece to be welded on the workpiece placement table 21, the worker starts the second motor 26 to drive the rotating shaft 23 to rotate, so that the positioning plate 25 can swing to a position of contact with the workpiece and then fix the workpiece, realizing rapid clamping of workpieces of different sizes and avoiding lateral deviation during welding; According to the size of the workpiece, the staff only needs to pull the pull plate 30 to drive the positioning pin 28 to disengage from the limiting hole 27 to move along the rotating axis 23 to adjust the position of the movable sleeve 24. After the movement is completed, release the pull plate 30, and under the action of the spring 29, the positioning pin 28 re-enters the limiting hole 27 to complete the fixation of the movable sleeve 24.

[0036] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0037] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An ultrasonic mobile seam welding machine, comprising a workbench (1) with a plurality of supporting legs (2) fixed to the bottom, characterized in that: A support base (3) is installed on the workbench (1), a placement groove (4) is provided on the support base (3), and a screw rod (5) is movably provided inside the placement groove (4); A movable platform (6) is slidably provided inside the placement groove (4), the screw rod (5) passes through the movable platform (6) and is threadedly connected thereto, and an ultrasonic roll welding system (7) is installed on the movable platform (6), and the ultrasonic roll welding system (7) includes an ultrasonic generating system, an ultrasonic vibration system, a roll welding execution system (8) and a pressurizing system; Two side seats (9) are symmetrically fixed on the movable platform (6), a slide groove (10) is provided on one side of the side seat (9), a slide seat (11) is slidably provided inside the slide groove (10), side rods (13) are fixed on both sides of the slide seat (11) through connecting rods (12), auxiliary pressure wheels (14) are movably provided on the side rods (13), and the two auxiliary pressure wheels (14) are symmetrically provided on both sides of the seam welding execution system (8).

2. The ultrasonic mobile seam welding machine according to claim 1, characterized in that: A threaded rod (15) is movably provided inside each of the two slide grooves (10), and the threaded rod (15) passes through the slide seat (11) and is threadedly connected thereto; The bottoms of the two threaded rods (15) extend out of the side seat (9) and are installed with a first bevel gear (16). Two limit seats (17) are fixed at intervals on one side of the movable platform (6). A transmission shaft (18) is movably arranged between the two limit seats (17). Two second bevel gears (19) are installed at intervals on the transmission shaft (18). The two second bevel gears (19) are respectively engaged with the two first bevel gears (16).

3. The ultrasonic mobile seam welding machine according to claim 2, characterized in that: A first motor (20) is installed on one side of the mobile platform (6), and an output end of the first motor (20) is connected to the transmission shaft (18) via a coupling.

4. The ultrasonic mobile seam welding machine according to claim 3, characterized in that: A closed transmission is adopted between the first bevel gear (16) and the second bevel gear (19).

5. The ultrasonic mobile seam welding machine according to claim 4, characterized in that: A workpiece placement platform (21) is fixed on the workbench (1), a fixed seat (22) is fixed on one side of the workpiece placement platform (21), a rotating shaft (23) is movably provided on the fixed seat (22), and two movable sleeves (24) are slidably provided on the rotating shaft (23); A positioning plate (25) is fixed to one side of the movable sleeve (24).

6. The ultrasonic mobile seam welding machine according to claim 5, characterized in that: A second motor (26) is installed on one side of the workpiece placement table (21), and an output end of the second motor (26) is connected to the rotating shaft (23) via a coupling.

7. The ultrasonic mobile seam welding machine according to claim 6, characterized in that: A plurality of limiting holes (27) are provided at intervals on the rotating shaft (23), a positioning pin (28) is provided above the movable sleeve (24), and the bottom of the positioning pin (28) is inserted into the movable sleeve (24) and extends into the limiting hole (27).

8. The ultrasonic mobile seam welding machine according to claim 7, characterized in that: A spring (29) is sleeved on the positioning pin (28), a pull plate (30) is fixed to the top of the positioning pin (28), one end of the spring (29) is fixed to the pull plate (30), and the other end of the spring (29) is fixed to the movable sleeve (24).

9. The ultrasonic mobile seam welding machine according to claim 8, characterized in that: A side bracket (31) is fixed to one side of each of the two side rods (13), and a dust suction pipe (32) is installed on the side bracket (31). One end of the dust suction pipe (32) is connected to the dust inlet pipe of the industrial vacuum cleaner, and the other end is located on one side of the auxiliary pressure wheel (14), so as to remove welding shavings generated by welding on the surface of the workpiece.

Images