Ultrasonic welding equipment, transducer fine adjustment device thereof and use method of transducer fine adjustment device

Abstract

The invention provides ultrasonic welding equipment and a transducer fine adjustment device and a using method thereof, the transducer fine adjustment device comprises a fixing table, a fine adjustment rotating disc, a mounting base assembly and two or more limiting pieces arranged in the circumferential direction of a transducer mounting hole, the mounting base assembly is located below the fixing table, and the transducer mounting hole is formed in the fixing table; the limiting piece extends in the axial direction of the transducer mounting hole, the limiting piece penetrates through the mounting base assembly and then is fixedly connected with the fixing table, and the mounting base assembly and the limiting piece are in sliding fit in the extending direction of the limiting piece; the fine adjustment turntable is arranged between the mounting seat assembly and the fixed table and is in threaded connection with the mounting seat assembly; a rotating disc through hole is formed in the fine adjustment rotating disc, an energy converter limiting hole is formed in the installation base assembly, and the energy converter installation hole, the rotating disc through hole and the energy converter limiting hole are sequentially arranged in the axial direction of the energy converter installation hole and jointly form an energy converter positioning hole. The height of the transducer can be accurately and finely adjusted, and the stability of the transducer in the welding process is improved.

Description

Technical Field

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

[0002] Ultrasonic welding is to transmit ultrasonic waves to plastic processing parts through the welding head, so that the two plastic joint surfaces will produce intense friction due to the action of ultrasonic waves. The friction heat melts the plastic joint surfaces and completes the gluing. This technology is fast, the weld is firm, and it can also automate the production and processing of plastic products. The ultrasonic plastic welding machine that applies this technology can be used for plastic welding, implantation, forming, riveting, spot welding, cutting, suturing and other operations.

[0003] The two Chinese utility model patents with patent publication numbers CN217574099U and CN207808524U both disclose ultrasonic welding equipment with multiple welding heads and transducers. The ultrasonic welding equipment disclosed in the patents are composed of two ultrasonic welding devices installed in parallel, which are started simultaneously through electrical control to weld the products to be welded simultaneously. However, due to delays in air pressure or electrical systems during startup, the products to be welded cannot be stressed at the same time during welding, resulting in uneven stress, affecting welding accuracy and welding stability. In the case of simultaneous startup and uniform stress, it is also necessary to solve the need for multiple welds of different heights on the same product and multiple welds to be welded simultaneously.

[0004] The Chinese utility model patent with patent publication number CN220517576U discloses that the same welding equipment has multiple transducer assemblies. By correspondingly opening waist-shaped holes extending in the vertical direction on the fixing plate and the transducer mounting seat, the transducer mounting seat and the fixing plate are fixedly connected by fasteners passing through the corresponding waist-shaped holes. However, this method has low accuracy in adjusting the height of the transducer and is difficult to control. After long-term use, the fasteners may become loose due to factors such as pressure and vibration, and the structure is not stable enough, which may cause the position of the transducer mounting seat to shift, resulting in welding failure. Summary of the invention

[0005] The first purpose of the present invention is to provide a transducer mounting assembly that can adjust the transducer height more accurately and independently, and can be relatively stable during the welding process. This can meet the requirements of welding multiple welding points of different heights on the same product at the same time, and has a transducer fine-tuning device with high accuracy and strong stability.

[0006] A second object of the present invention is to provide an ultrasonic welding device comprising 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 equipment.

[0008] In order to achieve the above-mentioned first purpose, the transducer fine-tuning device provided by the present invention includes a fixed platform, a fine-tuning turntable, a mounting seat assembly and more than two limit members arranged along the circumference of the transducer mounting hole, the mounting seat assembly is located below the fixed platform, and the transducer mounting hole is arranged on the fixed platform; the limit member extends along the axial direction of the transducer mounting hole, and the limit member is fixedly connected to the fixed platform after passing through the mounting seat assembly, the mounting seat assembly and the limit member slide and cooperate along the extension direction of the limit member, the fine-tuning turntable is arranged between the mounting seat assembly and the fixed platform, 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 limit hole is opened on the mounting seat assembly, the transducer mounting hole, the turntable through hole and the transducer limit hole are arranged in sequence along the axial direction of the transducer mounting hole and together constitute a transducer positioning hole; when the fine-tuning turntable is subjected to force rotation, the mounting seat assembly is driven to move, and the mounting seat assembly drives the transducer limit hole to move along the extension direction of the limit member.

[0009] As can be seen from the above, the transducer fine-tuning device provided in the present invention is provided with a fine-tuning turntable threadedly connected to the mounting seat assembly. The fine-tuning turntable is rotated to adjust the relative distance between the fine-tuning turntable and the mounting seat assembly, thereby adjusting the height of the transducer. The adjustment accuracy is relatively high. After adjustment, the fine-tuning turntable, the mounting seat assembly and the fixed platform are locked by the limit member, thereby ensuring the stability of the structure during the welding process.

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

[0011] It can be seen from the above that the rotation direction of the thread of the connecting part and the rotation direction of the thread of the limiter are opposite to each other. When the transducer is working, it can effectively prevent the limiter or the fine-tuning dial from rotating loose 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 limit 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 limiter 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 adjustment plane is provided on the inner wall of the leveling mounting cavity; the leveling mechanism includes a leveling mounting assembly and at least two leveling driving components, and the at least two leveling driving components are arranged at intervals along the circumference of the transducer limiting hole, and the leveling mounting assembly is arranged in the leveling mounting cavity, and the transducer limiting hole includes a mounting seat hole and a leveling assembly hole which are relatively arranged 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 mounting assembly; a second adjustment plane which is arranged opposite to the first adjustment plane and is slidably connected is provided on the leveling mounting assembly, and the first adjustment plane is inclined in a direction away from the fine-tuning turntable, and the first adjustment plane cooperates with the second adjustment plane at the axial upper limit of the transducer limiting hole, and each leveling driving component cooperates to adjust the inclination angle of the leveling assembly hole relative to the turntable through hole.

[0015] As can be seen from the above, the leveling drive can drive the leveling mounting assembly to swing, thereby adjusting the inclination angle of the transducer relative to the through hole of the turntable, thereby fine-tuning the level of the welding head arranged at the output end of the transducer.

[0016] A further solution is that the second adjustment plane is a convex arc surface curved toward the first adjustment plane, and the first adjustment plane is an inclined surface or a concave arc surface curved in a direction away from the second adjustment plane.

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

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

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

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

[0021] In order to achieve the above-mentioned second purpose, the ultrasonic welding equipment provided by the present invention includes a head driving mechanism, a lifting seat, a transducer assembly and a transducer fine-tuning device such as any one of the above-mentioned items; the fixed table is slidably connected to the lifting seat, the head driving mechanism is connected to the fixed table, and the head driving mechanism can drive the fixed table to move axially along the transducer mounting hole; the transducer assembly is installed in the transducer positioning hole.

[0022] A further solution is that the number of the transducer assemblies and the transducer fine-tuning devices are both more than two, and the transducer assemblies and the transducer positioning holes are arranged in a one-to-one correspondence.

[0023] As can be seen from the above, multiple transducer assemblies can be set on the same ultrasonic welding machine, and each transducer assembly can adjust the height of the transducer through the corresponding transducer fine-tuning device, thereby adjusting the height of the welding head, thereby meeting the needs of simultaneous welding of multiple welds of different heights on the same product.

[0024] In order to achieve the above-mentioned third purpose, the method for using the ultrasonic welding equipment provided by the present invention is applied to any of the ultrasonic welding equipment mentioned above, and the method includes the following steps: loosening each limit member in turn, at this time, the limit member and the fixed platform are still limited and matched; the transducer assembly moves downward under the action of gravity and the mounting seat assembly; rotating the fine-tuning dial to adjust the position of the mounting seat assembly and the transducer assembly in the vertical direction; locking the limit member to fix the height of the transducer assembly.

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

[0026] In summary, it can be seen that the fine-tuning device of the present invention has high adjustment accuracy, simple structure, high stability, and strong anti-interference ability, and can meet the needs of individually adjusting the height of the transducer. Multiple fine-tuning devices are arranged on the same ultrasonic welding equipment to meet the needs of simultaneous welding of multiple welds of different heights on the same product. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0029] Figure 3 This is an exploded view of an embodiment of the transducer fine-tuning device of the present invention, excluding the transducer.

[0030] Figure 4 yes Figure 2 Enlarged view of point A in the middle.

[0031] The present invention is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[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 assembly 9, a second transducer assembly 12 and at least two transducer fine-tuning devices 1, the first transducer assembly 9 includes a transducer 90 and a welding head (not shown in the figure) arranged at the output end of the transducer 90, and the second transducer assembly 12 is the same as the first transducer assembly 9.

[0033] See also Figures 1 to 4Each transducer fine-tuning device 1 includes a fixed platform 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 platform 2. Four limit holes 21 are provided around each transducer mounting hole 20. The four limit holes 21 extend along the axial direction of the transducer mounting hole 20. The four limit holes 21 are arranged at intervals along the circumference 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 with the corresponding limit hole 21 on the fixed platform 2. The mounting seat assembly 5 and the limit member 3 are slidably matched along the extension direction of the limit member 3. The fixed platform 2 is slidably connected to the lifting seat. The head drive mechanism is connected to the fixed platform 2. The head drive mechanism drives the fixed platform 2 to move along the axial direction of the transducer mounting hole 20.

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

[0035] The fine-tuning turntable 4 is arranged between the mounting seat assembly 5 and the fixed platform 2. A connecting portion 41 is arranged on one 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 arranged in the fine-tuning turntable 4. A transducer limiting hole 13 is opened on the mounting seat assembly 5. The transducer mounting hole 20, the turntable through hole 40, and the transducer limiting hole 13 are arranged in sequence along the axial direction of the transducer mounting hole 20 to 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 arranged on the fine-tuning turntable 4. The four slide rails 42 are arranged at intervals along the circumference of the turntable through hole 40. Each slide rail 42 extends along the circumference of the turntable through hole 40. Each limiting member 3 is slidably connected to the corresponding slide rail 42.

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

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

[0038] The mounting seat assembly 5 includes a mounting seat 6 and a leveling mechanism 7. A leveling mounting cavity 60 is provided in the mounting seat 6. 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 in the leveling mounting cavity 60. The transducer limiting hole 13 includes a mounting seat hole 64 and a leveling assembly hole 83 which are arranged opposite to each other along the axial direction of the transducer limiting hole 13. The mounting seat hole 64 is located on the mounting seat 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 clamp 82. A flange 91 protrudes outward from the radial direction of the transducer 90 on the transducer 90. The leveling installation assembly 8 is provided with a second adjustment plane 81 which is arranged opposite to and slidably connected to the first adjustment plane 61. The second adjustment plane 81 is located on the outer peripheral wall of the leveling base 80. The first adjustment plane 61 is inclined in the direction away from the fine-tuning turntable 4, that is, it is inclined downward from the direction close to the leveling assembly hole 83 to the direction away from the leveling assembly hole 83; the second adjustment plane 81 is inclined in the direction close to the fine-tuning turntable 4, that is, it is inclined upward from the direction away from the leveling assembly hole 83 to the direction close to the leveling assembly hole 83. The first adjustment plane 61 and the second adjustment plane 81 cooperate in the axial upper limit of the transducer limit hole 13. Each leveling drive member 10 cooperates to adjust the inclination angle of the leveling assembly hole 83 relative to the turntable through hole 40. The second adjustment plane 81 is a convex arc surface bent toward the first adjustment plane 61, and the first adjustment plane 61 is an inclined surface.

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

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

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

[0042] The mounting seat 6 includes a first mounting portion 62 and a second mounting portion 63 arranged in sequence along the vertical direction. The first mounting portion 62 is located above the second mounting portion 63. The first adjustment 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.

[0043] In order to achieve the above purpose, the present embodiment also provides a method for using the above ultrasonic welding device, which comprises the following steps: Loosen each limit member 3 in turn. At this time, the limit member 3 and the fixed platform 2 are still in limit cooperation; the first transducer assembly 9 moves downward under the action of gravity and the mounting seat assembly 5; rotate the fine-tuning dial 4 to adjust the position of the mounting seat assembly 5 and the first transducer assembly 9 in the vertical direction to make them drop to a preset height; lock the limit member 3 to fix the height of the first transducer assembly 9.

[0044] In summary, it can be seen that the fine-tuning device of the present invention has high adjustment accuracy, simple structure, high stability, and strong anti-interference ability, and can meet the needs of individually adjusting the height of the transducer. Multiple fine-tuning devices are arranged on the same ultrasonic welding equipment to meet the needs of simultaneous welding of multiple welds of 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, which 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.

2. The transducer fine-tuning device according to claim 1, characterized in that: 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, and 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.

3. The transducer fine-tuning device according to claim 2, characterized in that: At least one slide rail is arranged on the fine-tuning turntable, and the slide rail extends along the circumference of the turntable through hole, and at least one of the limit members is slidably connected to the slide rail.

4. The transducer fine-tuning device according to any one of claims 1 to 3, It is characterized by: 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 mounting 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. Each of the leveling drive components cooperates to adjust the inclination angle of the leveling assembly hole relative to the turntable through hole.

5. The transducer fine-tuning device according to claim 4, It is characterized by: The second adjustment plane is a convex arc surface that curves toward the first adjustment plane, and the first adjustment plane is an inclined surface or a concave arc surface that curves in a direction away from the second adjustment plane.

6. The transducer fine-tuning device according to claim 4, characterized in that ； 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.

7. The transducer fine-tuning device according to claim 6, characterized in that ； A gasket is arranged between the ejection end of the leveling knob and the leveling mounting assembly.

8. Ultrasonic welding equipment, comprising a head drive mechanism, a lifting seat and a transducer assembly, characterized in that: Also includes a transducer fine-tuning device as claimed in any one of claims 1 to 7; 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.

9. The ultrasonic welding device according to claim 8, 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.

10. A method for using an ultrasonic welding device, characterized in that: Applied to the ultrasonic welding equipment as described in 8 or 9 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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