Ultrasonic Welding Equipment, Its Transducer Fine-Tuning Device and Usage Method

Abstract

The present invention provides an ultrasonic welding device, a transducer fine-tuning device thereof and a using method. The device includes a fixed table, a fine-tuning turntable, a mounting seat assembly and more than two limiting members arranged circumferentially along the transducer mounting hole. The mounting seat assembly is located below the fixed table, and a transducer mounting hole is provided on the fixed table; the limiting members extend along the axial direction of the transducer mounting hole, and after passing through the mounting seat assembly, the limiting members are fixedly connected to the fixed table, and the mounting seat assembly is slidably matched with the limiting members along the extending direction of the limiting members; the fine-tuning turntable is arranged between the mounting seat assembly and the fixed table, and the fine-tuning turntable is threadedly connected to the mounting seat assembly; a turntable through-hole is provided in the fine-tuning turntable, and a transducer limiting hole is formed in the mounting seat assembly. The transducer mounting hole, the turntable through-hole and the transducer limiting hole are arranged in sequence along the axial direction of the transducer mounting hole and jointly form a transducer positioning hole. The present invention can accurately finely adjust the height of the transducer and improve its stability during the welding process.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic welding, and in particular to an ultrasonic welding device and a transducer fine-tuning device thereof. Background Art

[0002] Ultrasonic welding of an ultrasonic welding machine is to conduct ultrasonic waves through a welding head to plastic processing parts, so that the two plastic joint surfaces generate intense friction under the action of ultrasonic waves. The frictional heat melts the plastic joint surfaces to complete gluing. This technology is fast, the weld seams are firm, and it can also automate the production and processing of plastic products. The ultrasonic plastic welding machine applying this technology can be used for operations such as plastic fusion welding, implanting, forming, riveting, spot welding, cutting, and sewing.

[0003] Two Chinese utility model patents with the patent publication numbers of CN217574099U and CN207808524U both disclose ultrasonic welding devices with multiple welding heads and transducers. The disclosed ultrasonic welding devices are both composed of two ultrasonic welding devices installed in parallel. Through electrical control, they are started simultaneously to weld the products to be welded at the same time. However, due to air pressure or electrical system delay during startup, the products to be welded cannot be stressed simultaneously during welding, resulting in uneven stress, which affects the welding accuracy and welding stability. Under the condition of starting simultaneously and ensuring uniform stress, it is also necessary to solve the requirement of having multiple solder joints with different heights on the same product and the need to weld multiple solder joints simultaneously.

[0004] The Chinese utility model patent with the patent publication number of CN220517576U discloses that there are multiple transducer components on the same welding device. By correspondingly opening kidney-shaped holes extending in the vertical direction on the fixed plate and the transducer mounting seat, and passing fasteners through the corresponding kidney-shaped holes to fixedly connect the transducer mounting seat and the fixed plate. However, this method has a low accuracy in adjusting the height of the transducer and is not easy to control. And after long-term use, due to factors such as pressure and vibration, the fasteners may become loose, and the structure is not stable enough, resulting in the position of the transducer mounting seat shifting, leading to welding failure. Summary of the Invention

[0005] The first object of the present invention is to provide a transducer mounting assembly that can adjust the height of the transducer more precisely and can exist more stably during the welding process. Thus, a transducer fine-tuning device that can meet the simultaneous welding of multiple solder joints with different heights on the same product and has higher precision and stronger stability can be provided.

[0006] The second object of the present invention is to provide an ultrasonic welding device including the above transducer fine-tuning device.

[0007] The third object of the present invention is to provide a method for using the above ultrasonic welding device.

[0008] To achieve the above first object, the transducer fine-tuning device provided by the present invention includes a fixed table, a fine-tuning turntable, a mounting seat assembly, and more than two limiting members arranged circumferentially along the transducer mounting hole. The mounting seat assembly is located below the fixed table, and a transducer mounting hole is provided on the fixed table; the limiting member extends along the axial direction of the transducer mounting hole, passes through the mounting seat assembly and is fixedly connected to the fixed table, and the mounting seat assembly is slidably engaged with the limiting member along the extending direction of the limiting member. The fine-tuning turntable is arranged between the mounting seat assembly and the fixed table and is threadedly connected to the mounting seat assembly; a turntable through hole is provided in the fine-tuning turntable, and a transducer limiting hole is provided on the mounting seat assembly. The transducer mounting hole, the turntable through hole, and the transducer limiting hole are arranged in sequence along the axial direction of the transducer mounting hole and jointly form a transducer positioning hole; when the fine-tuning turntable is forced to rotate, it drives the mounting seat assembly to move, and the mounting seat assembly drives the transducer limiting hole to move along the extending direction of the limiting member.

[0009] As can be seen from the above, the transducer fine-tuning device provided by the present invention adjusts the relative distance between the fine-tuning turntable and the mounting seat assembly by rotating the fine-tuning turntable which is threadedly connected to the mounting seat assembly, thereby adjusting the height of the transducer. The adjustment accuracy is relatively high. After adjustment, the limiting member locks the fine-tuning turntable, the mounting seat assembly and the fixed table, thus ensuring the stability of the structure during the welding process.

[0010] A further solution is that a limiting hole threadedly connected to the limiting member is correspondingly provided on the fixed table; a connecting portion is provided on the side of the fine-tuning turntable close to the mounting seat assembly, and the connecting portion is threadedly connected to the mounting seat assembly. The helix direction of the thread of the connecting portion is opposite to the helix direction of the thread of the limiting member.

[0011] As can be seen from the above, the helix directions of the threads of the connecting portion and the limiting member are opposite to each other. When the transducer is working, it can effectively prevent the limiting member or the fine-tuning turntable from rotating and loosening due to continuous vibration, thereby causing the mounting seat assembly to shift in position and affecting the stability of welding.

[0012] A further solution is that at least one slide rail is provided on the fine-tuning turntable, the slide rail extends along the circumference of the turntable through hole, and at least one limiting member is slidably connected to the slide rail.

[0013] As can be seen from the above, the provided slide rail can effectively limit the displacement of the limiting member and restrict its adjustment stroke, thereby achieving the purpose of fine-tuning.

[0014] A further solution is that the mounting seat assembly includes a mounting seat and a leveling mechanism; a leveling mounting cavity is provided in the mounting seat, and a first leveling plane is provided on the inner wall of the leveling mounting cavity; the leveling mechanism includes a leveling mounting component and at least two leveling driving members, and the at least two leveling driving members are arranged at intervals along the circumference of the transducer limiting hole. The leveling mounting component is arranged in the leveling mounting cavity. The transducer limiting hole includes a mounting seat hole and a leveling component hole that are oppositely arranged along the axis of the transducer limiting hole. The mounting seat hole is located on the mounting seat, and the leveling component hole is located on the leveling mounting component; a second leveling plane that is oppositely arranged and slidably connected to the first leveling plane is provided on the leveling mounting component. The first leveling plane is inclined away from the fine adjustment turntable. The first leveling plane and the second leveling plane are limited and matched in the axial direction of the transducer limiting hole, and each leveling driving member cooperates to adjust the inclination angle of the leveling component hole relative to the turntable through hole.

[0015] As can be seen from the above, the leveling driving member can drive the leveling mounting component to swing, thereby adjusting the inclination angle of the transducer relative to the turntable through hole, and thus finely adjusting the level of the welding head provided at the output end of the transducer.

[0016] A further solution is that the second leveling plane is a convex arc surface that bends towards the first leveling plane, and the first leveling plane is an inclined plane or a concave arc surface that bends away from the second leveling plane.

[0017] As can be seen from the above, the second leveling plane is an arc surface and the first leveling plane is an inclined plane, which can effectively reduce the contact area with the first leveling plane, reduce the resistance of leveling, and make the movement during leveling smoother.

[0018] A further solution is that the leveling driving member includes a leveling knob, and the ejecting end of the leveling knob passes through the bottom wall of the mounting seat and abuts against the leveling mounting component.

[0019] A further solution is that a gasket is provided between the ejecting end of the leveling knob and the leveling mounting component.

[0020] As can be seen from the above, the provided washer can effectively prevent the adjusting knob from damaging the leveling mounting component.

[0021] To achieve the above second object, the ultrasonic welding equipment provided by the present invention includes a machine head driving mechanism, a lifting seat, a transducer assembly, and a transducer fine adjustment device as described in any one of the above; the fixed table is slidably connected to the lifting seat, the machine head driving mechanism is connected to the fixed table, and the machine head driving mechanism can drive the fixed table to move along the axis of the transducer mounting hole; the transducer assembly is installed in the transducer positioning hole.

[0022] A further solution is that the number of both the transducer assembly and the transducer fine adjustment device is more than two, and the transducer assembly is arranged in one-to-one correspondence with the transducer positioning hole.

[0023] As can be seen from the above, multiple transducer components can be arranged on the same ultrasonic welder. Each transducer component can adjust the height of the transducer through the corresponding transducer fine-tuning device, so as to adjust the height of the welding head, thus meeting the requirement of simultaneously welding multiple solder joints with different heights on the same product.

[0024] To achieve the above-mentioned third object, the method for using the ultrasonic welding equipment provided by the present invention is applied to the ultrasonic welding equipment as described in any one of the above. The method includes the following steps: successively loosen each limiting member. At this time, the limiting member and the fixed table are still in limiting cooperation; the transducer component moves downward under the action of gravity and the mounting seat component; rotate the fine-tuning turntable to adjust the positions of the mounting seat component and the transducer component in the vertical direction; lock the limiting member to fix the height of the transducer component.

[0025] As can be seen from the above, the fine-tuning device adjustment method of the present invention is simple and convenient to operate.

[0026] In summary, the fine-tuning device of the present invention has high adjustment accuracy, simple structure, high stability, strong anti-interference ability, can meet the requirement of individually adjusting the height of the transducer, and multiple fine-tuning devices are arranged on the same ultrasonic welding equipment, so as to meet the requirement of simultaneously welding multiple solder joints with different heights on the same product. Description of the Drawings

[0027] Figure 1 is a structural diagram of an embodiment of the transducer fine-tuning device of the present invention.

[0028] Figure 2 is a cross-sectional view of an embodiment of the transducer fine-tuning device of the present invention.

[0029] Figure 3 is an exploded view of an embodiment of the transducer fine-tuning device of the present invention without the transducer.

[0030] Figure 4 is Figure 2 an enlarged view of part A in

[0031] The present invention will be further described below with reference to the drawings and embodiments. Detailed Embodiments

[0032] The ultrasonic welding equipment provided in this embodiment includes a head driving mechanism (not shown in the figure), a lifting seat (not shown in the figure), a first transducer component 9, a second transducer component 12, and at least two transducer fine-tuning devices 1. The first transducer component 9 includes a transducer 90 and a welding head (not shown in the figure) provided at the output end of the transducer 90. The second transducer component 12 is the same as the first transducer component 9.

[0033] See Figures 1 to 4, each transducer fine-tuning device 1 includes a fixed table 2, a leveling mechanism 7, a fine-tuning turntable 4, a mounting seat assembly 5 and four limit members 3. At least two transducer mounting holes 20 are provided on the fixed table 2. Four limit holes 21 are provided around each transducer mounting hole 20. The four limit holes 21 all extend along the axial direction of the transducer mounting hole 20, and the four limit holes 21 are arranged at intervals along the circumferential direction of the corresponding transducer mounting hole 20. Each limit member 3 extends along the axial direction of the transducer mounting hole 20. After passing through the mounting seat assembly 5, each limit member 3 is threadedly connected to the corresponding limit hole 21 on the fixed table 2. The mounting seat assembly 5 and the limit member 3 are slidably matched along the extending direction of the limit member 3. The fixed table 2 is slidably connected to the lifting seat, and the head driving mechanism is connected to the fixed table 2. The head driving mechanism drives the fixed table 2 to move along the axial direction of the transducer mounting hole 20.

[0034] Optionally, the number of the limit members 3 can be two, three or more than five, and the number of the limit holes is greater than or equal to the number of the limit members 3.

[0035] The fine-tuning turntable 4 is arranged between the mounting seat assembly 5 and the fixed table 2. A connecting portion 41 is provided on the side of the fine-tuning turntable 4 close to the mounting seat assembly 5. The connecting portion 41 is threadedly connected to the mounting seat assembly 5. A turntable through hole 40 is provided in the fine-tuning turntable 4. A transducer limit hole 13 is provided on the mounting seat assembly 5. The transducer mounting hole 20, the turntable through hole 40 and the transducer limit hole 13 are arranged in sequence along the axial direction of the transducer mounting hole 20 to jointly form a transducer positioning hole. The first transducer assembly 9 and the second transducer assembly 12 are respectively installed in the corresponding transducer positioning holes. Four slide rails 42 are provided on the fine-tuning turntable 4. The four slide rails 42 are all arranged at intervals along the circumferential direction of the turntable through hole 40. Each slide rail 42 extends along the circumferential direction of the turntable through hole 40. Each limit member 3 is slidably connected to the corresponding slide rail 42.

[0036] Optionally, the number of the slide rails 42 can be one, two, three or more than five, and at least one limit member 3 is slidably connected to the slide rail 42.

[0037] Preferably, the helix direction of the thread of the connecting portion 41 is opposite to the helix direction of the thread of the limit member 3.

[0038] The mounting base assembly 5 includes a mounting base 6 and a leveling mechanism 7. A leveling mounting cavity 60 is provided inside the mounting base 6, and a first leveling plane 61 is provided on the inner wall of the leveling mounting cavity 60. The leveling mechanism 7 includes a leveling mounting assembly 8 and at least four leveling driving members 10. The four leveling driving members 10 are arranged at intervals along the circumference of the transducer limiting hole 13. The leveling mounting assembly 8 is arranged inside the leveling mounting cavity 60. The transducer limiting hole 13 includes a mounting base hole 64 and a leveling assembly hole 83 that are oppositely arranged along the axis of the transducer limiting hole 13. The mounting base hole 64 is located on the mounting base 6, and the leveling assembly hole 83 is located on the leveling mounting assembly 8. The leveling mounting assembly 8 includes a leveling base 80 and a leveling clamping member 82. A flange 91 protrudes radially outward from the transducer 90. A second leveling plane 81 that is oppositely arranged and slidably connected to the first leveling plane 61 is provided on the leveling mounting assembly 8. The second leveling plane 81 is located on the outer peripheral wall of the leveling base 80. The first leveling plane 61 is inclined away from the fine adjustment turntable 4, that is, it slopes downward from the direction close to the leveling assembly hole 83 to the direction away from the leveling assembly hole 83; the second leveling plane 81 is inclined toward the fine adjustment turntable 4, that is, it slopes upward from the direction away from the leveling assembly hole 83 to the direction close to the leveling assembly hole 83. The first leveling plane 61 and the second leveling plane 81 are in limit cooperation in the axial direction of the transducer limiting hole 13. Each leveling driving member 10 cooperates to adjust the inclination angle of the leveling assembly hole 83 relative to the turntable through hole 40. The second leveling plane 81 is a convex arc surface that bends toward the first leveling plane 61, and the first leveling plane 61 is an inclined plane.

[0039] Optionally, the first leveling plane 61 is a concave arc surface that bends away from the second leveling plane 81.

[0040] The leveling driving member 10 is a leveling knob. The ejecting end of the leveling knob passes through the bottom wall of the mounting base 6 and abuts against the leveling mounting assembly 8.

[0041] Preferably, a gasket 11 is provided between the ejecting end of the leveling knob and the leveling mounting assembly 8. Preferably, the turntable through hole 40 and the connecting portion 41 are both arranged coaxially with the transducer mounting hole 20.

[0042] The mounting base 6 includes a first mounting portion 62 and a second mounting portion 63 that are arranged in sequence along the vertical direction. The first mounting portion 62 is located above the second mounting portion 63. The first leveling plane 61 is located on the first mounting portion 62. The first mounting portion 62 and the second mounting portion 63 are detachably connected or welded and fixed.

[0043] To achieve the above object, this embodiment also provides a usage method of the above ultrasonic welding equipment. The method includes the following steps:

[0044] Release each limiting member 3 in sequence. At this time, the limiting member 3 and the fixed table 2 are still in limiting cooperation; the first transducer assembly 9 moves downward under the action of gravity and the mounting seat assembly 5; rotate the fine-tuning turntable 4 to adjust the positions of the mounting seat assembly 5 and the first transducer assembly 9 in the vertical direction so that they descend by a preset height; lock the limiting member 3 to fix the height of the first transducer assembly 9.

[0045] In summary, the fine-tuning device of the present invention has high adjustment accuracy, simple structure, high stability, strong anti-interference ability, can meet the need for individual height adjustment of the transducer, and multiple fine-tuning devices are provided on the same ultrasonic welding equipment to meet the need for simultaneous welding of multiple solder joints at different heights on the same product.

Claims

1. A transducer fine-tuning device, comprising a fixing platform and a mounting seat assembly, wherein the mounting seat assembly is located below the fixing platform, and a transducer mounting hole is provided on the fixing platform; Features: The transducer fine-tuning device further comprises two or more limiters arranged along the circumference of the transducer mounting hole, the limiters extending along the axial direction of the transducer mounting hole, the limiters passing through the mounting seat assembly and fixedly connected to the fixing platform, the mounting seat assembly and the limiters slidingly cooperate along the extension direction of the limiters; The transducer fine-tuning device further comprises a fine-tuning turntable, the fine-tuning turntable is arranged between the mounting seat assembly and the fixing platform, and the fine-tuning turntable is threadedly connected to the mounting seat assembly; The fine-tuning turntable is provided with a turntable through hole, the mounting seat assembly is provided with a transducer limiting hole, the transducer mounting hole, the turntable through hole and the transducer limiting hole are sequentially arranged along the axial direction of the transducer mounting hole and together constitute a transducer positioning hole; When the fine-tuning turntable is rotated under force, the mounting seat assembly is driven to move, and the mounting seat assembly drives the transducer limiting hole to move along the extension direction of the limiting member; The fixing platform is provided with a corresponding limiting hole which is threadedly connected to the limiting member; A connecting portion is provided on one side of the fine-tuning dial close to the mounting seat assembly, the connecting portion is threadedly connected to the mounting seat assembly, and the direction of rotation of the thread of the connecting portion is opposite to the direction of rotation of the thread of the limiting member; At least one slide rail is provided on the fine-tuning turntable, and the slide rail extends along the circumference of the turntable through hole, and at least one of the stoppers is slidably connected to the slide rail; The mounting seat assembly includes a mounting seat and a leveling mechanism; A leveling installation cavity is provided in the installation seat, and a first adjustment plane is provided on the inner wall of the leveling installation cavity; The leveling mechanism comprises a leveling installation assembly and at least two leveling driving members, wherein the at least two leveling driving members are arranged at intervals along the circumference of the transducer limiting hole, the leveling installation assembly is arranged in the leveling installation cavity, the transducer limiting hole comprises a mounting seat hole and a leveling assembly hole which are arranged opposite to each other along the axial direction of the transducer limiting hole, the mounting seat hole is located on the mounting seat, and the leveling assembly hole is located on the leveling installation assembly; The leveling installation assembly is provided with a second adjustment plane which is arranged opposite to and slidably connected to the first adjustment plane, the first adjustment plane is inclined in a direction away from the fine-tuning turntable, the first adjustment plane and the second adjustment plane cooperate in the axial upper limit of the transducer limit hole, and each of the leveling drive members cooperates to adjust the inclination angle of the leveling assembly hole relative to the turntable through hole; The second adjustment plane is a convex arc surface that curves toward the first adjustment plane, and the first adjustment plane is an inclined plane or a concave arc surface that curves away from the second adjustment plane; The leveling drive member comprises a leveling knob, and the ejected end of the leveling knob passes through the bottom wall of the mounting seat and abuts against the leveling mounting assembly.

2. The transducer fine-tuning device according to claim 1, characterized in that: A gasket is arranged between the ejection end of the leveling knob and the leveling mounting assembly.

3. Ultrasonic welding equipment, including a head drive mechanism, a lifting seat and a transducer assembly, characterized in that: Also includes the transducer fine-tuning device as claimed in claim 1 or 2; The fixed platform is slidably connected to the lifting seat, the head driving mechanism is connected to the fixed platform, and the head driving mechanism can drive the fixed platform to move along the axial direction of the transducer mounting hole; The transducer assembly is installed in the transducer positioning hole.

4. The ultrasonic welding equipment according to claim 3, characterized in that: The number of the transducer components and the transducer fine-tuning devices are both more than two, and the transducer components are arranged in a one-to-one correspondence with the transducer positioning holes.

5. The method for using the ultrasonic welding equipment is characterized by: Applied to the ultrasonic welding device as described in claim 3 above, the method of use comprises the following steps: Loosen each of the limiting members in turn, at which point the limiting members and the fixing platform are still in limiting cooperation; The transducer assembly moves downward under the action of gravity and the mounting seat assembly; Rotate the fine-tuning dial to adjust the positions of the mounting assembly and the transducer assembly in the vertical direction; The limiting member is locked to fix the height of the transducer assembly.

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