CN219805523U

CN219805523U - Ultrasonic welding machine

Info

Publication number: CN219805523U
Application number: CN202321648688.5U
Authority: CN
Inventors: 赖忠林; 李洪涛; 宋雷; 陈胜东
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2023-06-27
Filing date: 2023-06-27
Publication date: 2023-10-10
Anticipated expiration: 2033-06-27

Abstract

The utility model discloses an ultrasonic welding machine. The ultrasonic welding machine includes: a base; the welding seat is arranged on the seat body; an electric driving member disposed on the seat body; the ultrasonic welding assembly is arranged on one side of the welding seat and is distributed with the welding seat along a first direction, the ultrasonic welding assembly is in sliding connection with the seat body along the first direction and is connected with the electric driving piece, the electric driving piece transmits driving force to the ultrasonic welding assembly, and the ultrasonic welding assembly moves along the first direction relative to the welding seat, so that a welding gap between the ultrasonic welding assembly and the welding seat is adjusted; wherein, ultrasonic welding machine still includes: the displacement sensor is arranged on the seat body, acquires the displacement of the ultrasonic welding assembly relative to the welding seat along the first direction, and the electric driving piece adjusts the driving of the ultrasonic welding assembly based on the displacement. In this way, the accuracy and efficiency of welding gap adjustment can be improved.

Description

Ultrasonic welding machine

Technical Field

The utility model relates to the technical field of ultrasonic welding, in particular to an ultrasonic welding machine.

Background

An ultrasonic welding machine is a device for converting electric energy into mechanical energy, and the contact surface of a welding head and a workpiece are rubbed by high-frequency vibration of the welding head to generate heat required by welding so as to finish the welding of the workpiece.

In the related art, in the ultrasonic welding process, a welding head is driven to move up and down by a compression cylinder, and a welding gap between a welding head and a welding seat is adjusted by a mechanical limiting structure. This kind of structure all needs manual regulation welding gap when switching the work piece at every turn, and welding gap adjustment's precision is lower, and welding efficiency is lower.

Disclosure of Invention

In view of the above, the present utility model provides an ultrasonic welding machine to improve the accuracy and efficiency of welding gap adjustment.

In order to solve the technical problems, the utility model provides an ultrasonic welding machine. The ultrasonic welding machine comprises: a base; the welding seat is arranged on the seat body; an electric driving member disposed on the seat body; the ultrasonic welding assembly is arranged on one side of the welding seat and is arranged with the welding seat along a first direction, the ultrasonic welding assembly is in sliding connection with the seat body and is connected with the electric driving piece, the electric driving piece transmits driving force to the ultrasonic welding assembly, and the ultrasonic welding assembly moves relative to the welding seat along the first direction, so that a welding gap between the ultrasonic welding assembly and the welding seat is adjusted; wherein, ultrasonic welding machine still includes: the displacement sensor is arranged on the seat body, acquires the displacement of the ultrasonic welding assembly relative to the welding seat along the first direction, and the electric driving piece adjusts the driving of the ultrasonic welding assembly based on the displacement.

Compared with the prior art that the air cylinder is used for providing the driving force for the ultrasonic welding assembly, the driving force is provided for the ultrasonic welding assembly by the electric driving part, and the control accuracy and the control efficiency of the electric driving part are high, so that the accuracy and the efficiency of welding gap adjustment between the ultrasonic welding assembly and the welding seat can be improved. According to the embodiment, the displacement of the ultrasonic welding assembly relative to the welding seat is obtained through the displacement sensor, the driving parameters of the ultrasonic welding assembly are adjusted through the electric driving piece based on the displacement, automatic closed-loop adjustment of the welding gap between the welding head and the welding seat can be realized through the electric driving piece and the displacement sensor, the problems of downtime, welding cold joint and the like can be reduced, the efficiency and the accuracy of welding gap adjustment can be improved, and the welding quality can be improved.

In some embodiments, the ultrasonic welder further comprises: and the controller is connected with the electric driving part, the ultrasonic welding assembly and the displacement sensor, acquires displacement from the displacement sensor, controls the electric driving part to work based on the displacement, and also controls the ultrasonic welding assembly to work.

According to the embodiment, the controller is used for realizing automatic control of the electric driving part, the ultrasonic welding assembly and the displacement sensor, so that the efficiency and the accuracy of welding gap adjustment can be further improved, and the working efficiency of the ultrasonic welding machine is improved.

In some embodiments, the ultrasonic welding assembly has a standard, and the displacement sensor comprises: the sensor body is arranged on the seat body; the detection part extends along the first direction of the ultrasonic wave, one end of the detection part is connected with the sensor body, and the projection of the other end of the detection part towards the first direction is overlapped with the projection of the standard component towards the first direction; wherein the ultrasonic welding assembly moves relative to the weld holder in a first direction.

The detection part of the embodiment can detect the displacement of the standard component relative to the displacement sensor, so that the displacement of the ultrasonic welding component relative to the seat body can be detected.

In some embodiments, an ultrasonic welding assembly includes: and the triple piece is in sliding connection with the base body along the first direction, and a welding head of the triple piece is connected with the electric driving piece.

The ultrasonic welding device can realize ultrasonic welding through the triple piece consisting of the welding head, the transducer and the amplitude modulator, and is high in efficiency and accuracy.

In some embodiments, the ultrasonic welding assembly further comprises: the first side of the connecting component is connected with the electric driving piece, the second side of the connecting component is connected with one end of the welding head, which is away from the welding seat, and the first side and the second side are arranged in a way of being opposite to each other; the connecting component is also connected with an amplitude modulator of the triple piece, and the connecting component is connected with the seat body in a sliding way along the first direction.

According to the embodiment, the welding head is connected with the electric driving piece through the connecting assembly, the amplitude modulator is connected with the base body in a sliding mode, stable connection of the triple piece can be achieved, and welding accuracy is improved.

In some embodiments, the first side is provided with a groove, a rod body perpendicular to the first direction is arranged in the groove, and the ultrasonic welding assembly further comprises: and one end of the connecting shaft is connected with the electric driving piece, and the other end of the connecting shaft is connected with the rod body.

The both ends of the body of rod are connected with the lateral wall of recess respectively, and set up with the lateral wall interval of recess for the other end of connecting axle is unsettled in the recess, and can rotate along the body of rod, can improve the dead problem of output shaft card of electric drive piece.

In some embodiments, the base is provided with an opening, the connection assembly and the welding head are located on the same side of the opening, the amplitude modulator of the triplet is inserted through the opening, and the transducer and the displacement sensor of the triplet are located on the other side of the opening.

In the embodiment, the connecting component and the welding head are arranged on one side of the base body, the transducer and the displacement sensor are arranged on the other side of the base body, and the amplitude modulator of the triplet is arranged through the opening of the base body, so that the integration level of the whole ultrasonic welding machine can be improved, the volume of the ultrasonic welding machine is reduced, and the stability of the ultrasonic welding machine can be improved.

In some embodiments, the ultrasonic welder further comprises: the limiting mechanism is arranged between the ultrasonic welding assembly and the seat body, is arranged on one side of the ultrasonic welding assembly, deviating from the welding seat, and is configured to limit the displacement of the ultrasonic welding assembly, deviating from the welding seat, relative to the seat body.

According to the embodiment, the displacement of the ultrasonic welding assembly, which deviates from the welding seat, relative to the seat body is limited through the limiting mechanism, so that the moving stroke of the ultrasonic welding assembly can be shortened, and the welding efficiency is improved.

In some embodiments, the sonic welder further comprises: and the buffer piece is arranged between the seat body and the ultrasonic welding assembly.

The impact between the seat body and the ultrasonic welding assembly can be relieved through the buffer piece, and stability is improved.

In some embodiments, the electric drive comprises an electric cylinder.

The embodiment utilizes the electric cylinder to provide driving force for the ultrasonic welding assembly, can improve the accuracy and the efficiency of welding gap adjustment, and the electric cylinder has output moment self-feedback, can adjust the welding pressure of each workpiece in real time, ensures the welding quality of the workpiece, promotes the consistency of the welding quality of the workpieces in the same batch, and improves the problems of cold joint outflow and the like.

In some embodiments, the ultrasonic welder further comprises: and the proximity detection assembly is arranged between the seat body and the ultrasonic welding assembly and is configured to detect whether the ultrasonic welding assembly moves to a preset position along the seat body.

According to the embodiment, whether the ultrasonic welding assembly moves to the preset position along the seat body or not is determined through the proximity detection assembly, and the accuracy of welding gap adjustment can be improved.

In some embodiments, the proximity detection assembly includes: the baffle is arranged on the seat body; and the detection piece is arranged on the ultrasonic welding assembly, and the ultrasonic welding assembly is determined to move to a preset position when the detection piece is overlapped with the baffle.

The ultrasonic welding assembly is determined to move to the preset position when the detection piece is overlapped with the baffle plate, and the ultrasonic welding assembly is simple in structure and easy to operate.

Unlike the prior art: the ultrasonic welding machine provided by the utility model comprises: the ultrasonic welding device comprises a base body, a welding base, an electric driving piece and an ultrasonic welding assembly, wherein the welding base and the electric driving piece are arranged on the base body, the ultrasonic welding assembly is in sliding connection with the base body and is connected with the electric driving piece, the electric driving piece provides driving force for the ultrasonic welding assembly, the ultrasonic welding assembly moves relative to the welding base, and therefore a welding gap between the ultrasonic welding assembly and the welding base is adjusted. Compared with the prior scheme of providing driving force for the ultrasonic welding assembly by using the air cylinder, the utility model provides driving force for the ultrasonic welding assembly by using the electric driving piece, and the control accuracy and the control efficiency of the electric driving piece are higher, so that the accuracy and the efficiency of welding gap adjustment between the ultrasonic welding assembly and the welding seat can be improved; further, the ultrasonic welding machine further includes: the displacement sensor is arranged on the seat body, the displacement sensor obtains the displacement of the ultrasonic welding assembly along the first direction relative to the welding seat, the electric driving piece adjusts the driving of the ultrasonic welding assembly based on the displacement, the displacement sensor obtains the displacement of the ultrasonic welding assembly relative to the welding seat, the electric driving piece is adjusted to adjust the driving parameters of the ultrasonic welding assembly based on the displacement, the automatic closed-loop adjustment of the welding gap between the welding head and the welding seat can be realized through the electric driving piece and the displacement sensor, the problems of downtime, welding cold welding and the like can be reduced, the efficiency and the accuracy of the welding gap adjustment can be improved, and the welding quality can be improved.

Drawings

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic perspective view of an ultrasonic welder according to an embodiment of the present utility model;

FIG. 2 is a schematic view of an exploded construction of the ultrasonic welder of the embodiment of FIG. 1;

FIG. 3 is a schematic front view of the ultrasonic welder of the embodiment of FIG. 1;

FIG. 4 is a schematic side view of the ultrasonic welder of the embodiment of FIG. 1;

fig. 5 is another side view schematic diagram of the ultrasonic welder of the embodiment of fig. 1.

Reference numerals: the ultrasonic welding device comprises a base body 10, a welding base 20, an electric driving part 30, an ultrasonic welding assembly 40, a displacement sensor 50, a buffer part 60, a limiting mechanism 70, a proximity detection assembly 80, a connection assembly 410, a first connection block 411, a pressing block 412, a second connection block 413, a groove 414, a rod body 415, a standard part 420, a triple part 430, a welding head 431, a transducer 432, an amplitude modulator 433, a mounting frame 434, a sliding block 435, a connection shaft 440, a sensor body 510, a detection part 520, a detection part 810 and a baffle 820.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present utility model, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present utility model, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present utility model.

In the description of the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

An ultrasonic welding machine is a device for welding by utilizing the ultrasonic principle, and is widely applied to enterprise production. An ultrasonic welding machine is a device for converting electric energy into mechanical energy, and the contact surface of a welding head and a workpiece are rubbed by high-frequency vibration of the welding head to generate heat required by welding so as to finish the welding of the workpiece.

In the related art, in the ultrasonic welding process, a welding head is driven to move up and down by a compression cylinder, and a welding gap between a welding head and a welding seat is adjusted by a mechanical limiting structure. This kind of structure all needs manual regulation welding gap when switching the work piece at every turn, and welding gap adjusts the precision lower, and welding efficiency is lower.

In order to solve the above problems, the present utility model provides an ultrasonic welding machine, which uses an electric driving member to provide driving force for an ultrasonic welding assembly, so as to improve the accuracy and efficiency of welding gap adjustment between the ultrasonic welding assembly and a welding seat.

The ultrasonic welding machine can be used for realizing the mutual melting of copper foil and nickel sheet of lithium battery and polymer battery, the mutual melting of aluminum foil and aluminum sheet, the mutual melting of nickel screen and nickel sheet of nickel-hydrogen battery, and the like, and can also be used for the mutual melting of electric wires, the mutual melting of electric wires and various electronic elements, joints and connectors, the mutual melting of electromagnetic switches, fuse-free switches and other heavy current joints, the mutual melting of dissimilar metal sheets, and the like.

Referring to fig. 1 to 5, fig. 1 is a schematic perspective view of an ultrasonic welding machine according to an embodiment of the present utility model; FIG. 2 is a schematic view of an exploded construction of the ultrasonic welder of the embodiment of FIG. 1; FIG. 3 is a schematic front view of the ultrasonic welder of the embodiment of FIG. 1; FIG. 4 is a schematic side view of the ultrasonic welder of the embodiment of FIG. 1; fig. 5 is another side view schematic diagram of the ultrasonic welder of the embodiment of fig. 1. The ultrasonic welding machine of the present embodiment includes: the ultrasonic welding device comprises a base body 10, a welding base 20, an electric driving piece 30 and an ultrasonic welding assembly 40, wherein the welding base 20 and the electric driving piece 30 are arranged on the base body 10, the ultrasonic welding assembly 40 is arranged on one side of the welding base 20 and is distributed with the welding base 20 along a first direction z, the ultrasonic welding assembly 40 is slidably connected with the base body 10 along the first direction z and is connected with the electric driving piece 30, the electric driving piece 30 provides driving force for the ultrasonic welding assembly 40, and the ultrasonic welding assembly 40 moves along the first direction z relative to the welding base 20 so as to adjust a welding gap between the ultrasonic welding assembly 40 and the welding base 20.

Specifically, the ultrasonic welding assembly 40 is a mechanism for performing welding by using an ultrasonic principle, and can convert electric energy into mechanical energy, and the ultrasonic welding assembly 40 makes a contact surface of a welding head and a workpiece generate friction through high-frequency vibration of the welding head 431, so as to generate heat required by welding, thereby completing welding of the workpiece. The sliding connection of the ultrasonic welding assembly 40 and the base 10 means that the base 10 is used as a support of the ultrasonic welding assembly 40, and the ultrasonic welding assembly 40 can slide on the base 10 and generate relative displacement. The ultrasonic welding assembly 40 is connected with the electric driving member 30, that is, the ultrasonic welding assembly 40 is in transmission connection with the electric driving member 30, and the ultrasonic welding assembly 40 can move by driving force from the electric driving member 30; the electric drive 30 refers to a mechanism capable of converting electric energy into mechanical energy. The welding gap refers to a gap between the horn 431 of the ultrasonic welding assembly 40 and the anvil 20.

The adjustment efficiency of the welding gap directly influences the operation efficiency of the ultrasonic welding machine, and the accuracy of the welding gap directly influences the welding quality of the workpiece.

Compared with the prior art in which a cylinder is used to provide driving force for the ultrasonic welding assembly, the driving force is provided for the ultrasonic welding assembly 40 by the electric driving member 30, and the control accuracy and the control efficiency of the electric driving member 30 are high, so that the accuracy and the efficiency of welding gap adjustment between the ultrasonic welding assembly 40 and the welding seat can be improved.

The first direction z in this embodiment is a vertical direction, and in other embodiments, the first direction z may be a horizontal direction or the like.

Further, the sliding connection between the ultrasonic welding assembly 40 and the base 10 can improve the efficiency of the ultrasonic welding assembly 40, thereby improving the accuracy and efficiency of the welding gap adjustment.

In an application scenario, the electric driver 30 provides a driving force to the ultrasonic welding assembly 40, so that the ultrasonic welding assembly 40 moves towards the welding seat 20 along the first direction z relative to the base body 10, and when a welding gap between the welding head 431 and the welding seat 20 reaches a first preset value, the electric driver 30 stops driving the ultrasonic welding assembly 40 to continue to move towards the welding seat 20, the ultrasonic welding assembly 40 receives an electric signal, and welding of a workpiece on the welding seat 20 is completed based on the electric signal; after the welding is completed, the electric driving member 30 provides a driving force to the ultrasonic welding assembly 40, so that the ultrasonic welding assembly 40 moves away from the welding seat 20 relative to the seat 10 along the first direction z, so that the welding gap between the welding head 431 and the welding seat 20 reaches a second preset value, wherein the second preset value is greater than the first preset value, and the workpiece is conveniently taken and placed. The welding gap may be obtained by driving parameters such as the driving distance of the electric driver 30.

In some embodiments, the ultrasonic welder further comprises: the displacement sensor 50 is disposed on the base 10, the displacement sensor 50 obtains a displacement of the ultrasonic welding assembly 40 relative to the weld base 20 along the first direction z, and the driving of the ultrasonic welding assembly 40 by the electric driver 30 is adjusted based on the displacement.

Specifically, the displacement sensor 50 refers to an assembly or component for acquiring displacement of the ultrasonic welding assembly 40 relative to the weld nest 20. The driving parameters, such as the driving distance, of the electric driving member 30 to the ultrasonic welding assembly 40 are adjusted based on the displacement of the ultrasonic welding assembly 40 relative to the welding seat 20, so that the driving of the electric driving member 30 to the ultrasonic welding assembly 40 is adjusted in real time based on the displacement of the ultrasonic welding assembly 40 relative to the welding seat 20, and the efficiency and the accuracy of welding gap adjustment are improved.

According to the embodiment, the displacement of the ultrasonic welding assembly 40 relative to the welding seat 20 is obtained through the displacement sensor 50, the driving parameters of the ultrasonic welding assembly 40 are adjusted by adjusting the electric driving part 30 based on the displacement, the automatic closed-loop adjustment of the welding gap between the welding head 431 and the welding seat 20 can be realized through the electric driving part 30 and the displacement sensor 50, the problems of downtime, welding cold joint and the like can be reduced, the efficiency and the accuracy of welding gap adjustment can be improved, and the welding quality can be improved.

In some embodiments, the ultrasonic welder further comprises: and a controller connected to the electric driver 30, the ultrasonic welding assembly 40 and the displacement sensor 50, the controller acquiring the displacement from the displacement sensor 50 and controlling the operation of the electric driver 30 based on the displacement, and the controller also controlling the operation of the ultrasonic welding assembly 40.

Specifically, the controller refers to a circuit or an integrated circuit having logic processing and control functions, and the like; the controller is electrically connected to the electric driver 30, the ultrasonic welding assembly 40, and the displacement sensor 50, meaning that the controller is electrically connected to the electric driver 30, the ultrasonic welding assembly 40, and the displacement sensor 50.

In an application scenario, the controller controls the electric drive 30 to provide a driving force to the ultrasonic welding assembly 40 to move the ultrasonic welding assembly 40 relative to the housing 10 in the first direction z toward the weld nest 20, and controls the displacement sensor 50 to acquire a displacement of the ultrasonic welding assembly 40 relative to the housing 10 in the first direction z during movement of the ultrasonic welding assembly 40, and the controller controls the electric drive 30 based on the displacement. When the welding gap between the welding head 431 and the welding seat 20 reaches a first preset value, the controller controls the electric driving piece 30 to stop driving the ultrasonic welding assembly 40 to continue to move towards the welding seat 20; the ultrasonic welding assembly 40 receives an electrical signal from the controller and completes welding of the workpiece on the weld holder 20 based on the electrical signal; after the welding is completed, the controller controls the electric driver 30 to provide driving force to the ultrasonic welding assembly 40 again, so that the ultrasonic welding assembly 40 moves away from the welding seat 20 relative to the base 10 along the first direction z, and during the moving process, the controller controls the displacement sensor 50 to acquire the displacement of the ultrasonic welding assembly 40 relative to the base 10 along the first direction z, and the controller controls the electric driver 30 based on the displacement, so that when the welding gap between the welding head 431 and the welding seat 20 reaches a second preset value, the electric driver 30 is controlled to stop driving the welding head 431, wherein the second preset value is larger than the first preset value, so that the workpiece can be taken and placed conveniently. The welding gap may be obtained by displacement of the ultrasonic welding assembly 40 relative to the housing 10 acquired by the displacement sensor 50.

The embodiment realizes the automatic control of the electric driving part 30, the ultrasonic welding assembly 40 and the displacement sensor 50 through the controller, can further improve the efficiency and the accuracy of welding gap adjustment, and improves the working efficiency of the ultrasonic welding machine.

In some embodiments, standard 420 is provided on ultrasonic welding assembly 40, and displacement sensor 50 comprises: a sensor body 510 and a detection unit 520, wherein the sensor body 510 is disposed on the seat 10; the detecting part 520 is extended along the first direction z of the ultrasonic welding assembly 40, one end of the detecting part 520 is connected with the sensor body 510, and the projection of the other end of the detecting part 520 along the first direction z overlaps with the projection of the standard part 420 along the first direction z; wherein the ultrasonic welding assembly 40 moves relative to the weld nest 20 in the first direction z.

The standard 420 is fixedly connected with the ultrasonic welding assembly 40 and moves along with the movement of the ultrasonic welding assembly 40; the sensor body 510 is fixedly connected with the base 10, so that the stability of the displacement sensor 50 can be improved, and the data acquisition accuracy of the displacement sensor can be improved.

The detection part 520 of the present embodiment can detect the displacement of the standard 420 relative to the displacement sensor 50, so that the displacement of the ultrasonic welding assembly 40 relative to the base 10 can be detected, and the structure is simple and easy to operate.

In some embodiments, the ultrasonic welding assembly 40 further comprises: the triple member 430 is slidably connected to the base 10 in the first direction z, and the welding head 431 of the triple member 430 is connected to the electric driving member 30.

The triplet 430 includes a welding head 431, a transducer 432, and an amplitude modulator 433, where the amplitude modulator 433 is connected to the welding head 431 and the transducer 432, and amplifies the mechanical vibration of the transducer 432 and transmits the amplified mechanical vibration to the welding head 431.

The transducer 432 converts the electric signal into mechanical vibration of the same frequency, and then the mechanical vibration is transmitted to the welding head 431 through the amplitude modulator 433, and the welding head 431 applies high-frequency vibration kinetic energy to two surfaces of objects to be welded, namely the surfaces of workpieces, so that the two surfaces of the objects are rubbed with each other, and molecules of the welded objects are diffused and recrystallized with each other, thereby realizing welding.

In the embodiment, ultrasonic welding can be realized through the triple piece 430 consisting of the welding head 431, the transducer 432 and the amplitude modulator 433, so that the efficiency and the accuracy are high.

In some embodiments, the ultrasonic welding assembly 40 further comprises: the connecting assembly 410, wherein a first side of the connecting assembly 410 is connected with the electric driving piece 30, a second side of the connecting assembly 410 is connected with one end of the welding head 431, which is away from the welding seat 20, and the first side and the second side are oppositely arranged; the connection assembly 410 is also coupled to a mounting bracket 434 of the modulator 433 of the triplet 430, and the connection assembly is slidably coupled to the base 10 in the first direction z.

In this embodiment, the welding head 431 is connected with the electric driving member 30 through the connection assembly, and the amplitude modulator 433 is slidably connected with the base 10, so that stable connection of the triple element 430 can be realized, and the welding accuracy is improved.

In some embodiments, the first side of the connection assembly 410 is provided with a groove 414, and a rod 415 perpendicular to the first direction z is provided in the groove 414, and the ultrasonic welding assembly 40 further includes: and a connecting shaft 440, one end of the connecting shaft 440 is connected to the electric driving member 30, and the other end of the connecting shaft 440 is connected to the rod body 415.

Optionally, the other end of the connecting shaft 440 is provided with a through hole parallel to the rod 415, the middle part of the rod 415 is disposed in the through hole, two ends of the rod 415 are respectively connected with the side wall of the groove 414 and are spaced from the side wall of the groove 414, so that the other end of the connecting shaft 440 is suspended in the groove 414 and can rotate along the rod 415, and the problem that the output shaft of the electric driving part 30 is blocked can be solved.

In some embodiments, the base 10 has an opening, the connecting component 410 and the welding head 431 are located on the same side of the opening, the modulator 433 of the triplet 430 is inserted through the opening, and the transducer 432 and the displacement sensor 50 are located on the other side of the opening.

In this embodiment, the connecting component 410 and the welding head 431 are disposed on one side of the base 10, the transducer 432 and the displacement sensor 50 are disposed on the other side of the base 10, and the modulator 433 of the triplet 430 is inserted through the opening of the base 10, so that the integration level of the whole ultrasonic welder can be improved, the volume of the ultrasonic welder can be reduced, and the stability of the ultrasonic welder can be improved.

In some embodiments, the ultrasonic welder further comprises: the limiting mechanism 70 is disposed between the base 10 and the ultrasonic welding assembly 40 along the first direction z of the ultrasonic welding assembly 40, and the limiting mechanism 70 is disposed on a side of the ultrasonic welding assembly 40 away from the weld holder 20 and is configured to limit displacement of the ultrasonic welding assembly 40 relative to the base 10 away from the weld holder 20.

In this embodiment, the displacement of the ultrasonic welding assembly 40 relative to the seat body 10 moving away from the welding seat 20 along the first direction z is limited by the limiting mechanism 70, so that the moving stroke of the ultrasonic welding assembly 40 can be reduced, and the welding efficiency can be improved.

In some embodiments, the ultrasonic welder further comprises: the buffer 60 is disposed between the seat body 10 and the ultrasonic welding assembly 40.

The shock between the seat body 10 and the ultrasonic welding assembly 40 can be relieved through the buffer member 60, and the stability is improved.

In some embodiments, the electric drive 30 comprises an electric cylinder.

The driving force is provided for the ultrasonic welding assembly 40 by the electric cylinder, so that the accuracy and efficiency of welding gap adjustment can be improved, the electric cylinder has output torque self-feedback, the welding pressure of each workpiece can be adjusted in real time, the welding quality of the workpieces is ensured, the consistency of the welding quality of the workpieces in the same batch is improved, and the problems of cold joint outflow and the like are solved.

In some embodiments, the ultrasonic welder further comprises: the proximity detection assembly 80 is disposed between the base 10 and the ultrasonic welding assembly 40, and is configured to detect whether the ultrasonic welding assembly 40 moves to a preset position along the base 10.

The preset position matches the first preset value, that is, when the ultrasonic welding assembly 40 reaches the preset position, the welding gap between the welding head 431 and the welding seat 20 meets the welding requirement.

The present embodiment can improve the accuracy of the welding gap adjustment by determining whether the ultrasonic welding assembly 40 moves to a preset position along the housing 10 by the proximity detection assembly 80.

In some embodiments, the proximity detection assembly 80 includes: a baffle 820 and a detecting member 810, wherein the baffle 820 is arranged on the seat body 10; the sensing element 810 is disposed on the ultrasonic welding assembly 40, and the sensing element 810 is overlapped with the baffle 820 to determine that the ultrasonic welding assembly 40 is moved to a preset position.

In this embodiment, when the detecting member 810 and the baffle 820 overlap, it is determined that the ultrasonic welding assembly 40 moves to the preset position, and the structure is simple and easy to operate.

In some embodiments, as shown in fig. 1 to 5, an ultrasonic welding machine includes: the ultrasonic welding device comprises a base body 10, a welding base 20, an electric driving piece 30 and an ultrasonic welding assembly 40, wherein the welding base 20 and the electric driving piece 30 are arranged on the base body 10, the ultrasonic welding assembly 40 is arranged on one side of the welding base 20 and is distributed with the welding base 20 along a first direction, the ultrasonic welding assembly 40 is connected with the base body 10 in a sliding mode along a first direction z and is connected with the electric driving piece 30, the electric driving piece 30 provides driving force for the ultrasonic welding assembly 40, and the ultrasonic welding assembly 40 moves along the first direction z relative to the welding base 20 so as to adjust a welding gap between the ultrasonic welding assembly 40 and the welding base 20.

Compared with the prior art that utilizes a cylinder to provide driving force for the ultrasonic welding assembly, the embodiment utilizes the electric driving member 30 to provide driving force for the ultrasonic welding assembly 40, and the control accuracy and the control efficiency of the electric driving member 30 are high, so that the accuracy and the efficiency of the welding gap adjustment between the ultrasonic welding assembly 40 and the welding seat can be improved. Further, the sliding connection between the ultrasonic welding assembly 40 and the base 10 can improve the efficiency of the ultrasonic welding assembly 40, thereby improving the accuracy and efficiency of the welding gap adjustment.

Further, the ultrasonic welding machine further includes: the displacement sensor 50 is disposed on the base 10, the displacement sensor 50 obtains a displacement of the ultrasonic welding assembly 40 relative to the weld base 20 along the first direction z, and the driving of the ultrasonic welding assembly 40 by the electric driver 30 is adjusted based on the displacement.

Wherein, be equipped with standard 420 on ultrasonic welding subassembly 40, displacement sensor 50 includes: a sensor body 510 and a detection unit 520, wherein the sensor body 510 is disposed on the seat 10; the detecting part 520 is extended along the first direction z of the ultrasonic welding assembly 40, one end of the detecting part 520 is connected with the sensor body 510, and the projection of the other end of the detecting part 520 along the first direction z overlaps with the projection of the standard part 420 along the first direction z; wherein the ultrasonic welding assembly 40 moves relative to the weld nest 20 in the first direction z.

The first direction z is a vertical direction, and the ultrasonic welding assembly 40 moves up and down with respect to the holder 20.

In other embodiments, other configurations of displacement sensors or depth sensors, etc. may be used in place of displacement sensor 50.

Further, the ultrasonic welding machine further includes: and a controller connected to the electric driver 30, the ultrasonic welding assembly 40 and the displacement sensor 50, the controller acquiring the displacement from the displacement sensor 50 and controlling the operation of the electric driver 30 based on the displacement, and the controller also controlling the operation of the ultrasonic welding assembly 40.

Further, the ultrasonic welding assembly 40 further includes: the triple member 430 is slidably connected to the base 10 in the first direction z, and the welding head 431 of the triple member 430 is connected to the electric driving member 30.

The transducer 432 is also electrically connected to the controller to obtain an electrical signal from the controller, the transducer 432 converts the electrical signal into mechanical vibrations of the same frequency, which are then transmitted to the welding head 431 via the amplitude modulator 433, and the welding head 431 applies high-frequency vibration kinetic energy to two surfaces of the objects to be welded, i.e., the surfaces of the workpieces, so that the two surfaces of the objects are rubbed against each other to diffuse and recrystallize molecules of the welded objects from each other, thereby realizing welding.

In other embodiments, the controller may control the ultrasonic generator to generate the electrical signal, and the transducer is electrically connected to the ultrasonic generator to obtain the electrical signal.

Further, the ultrasonic welding assembly 40 further includes: the connecting assembly 410, wherein a first side of the connecting assembly 410 is connected with the electric driving piece 30, a second side of the connecting assembly 410 is connected with one end of the welding head 431, which is away from the welding seat 20, and the first side and the second side are oppositely arranged; the connection assembly 410 is also coupled to a mounting bracket 434 of the modulator 433 of the triplet 430, and the connection assembly is slidably coupled to the base 10 in the first direction z.

Wherein, the connection assembly 410 includes: a first connection block 411, a pressing block 412 and a second connection block 413, wherein the first connection block 411 is connected with the electric driving member 30; the pressing block 412 is arranged between the first connecting block 411 and the welding head 431 along the first direction z, and is respectively connected with the first connecting block 411 and the welding head 431; the second connection block 413 is connected to the first connection block 411 and the pressing block 412, respectively, and is slidably connected to the base 10.

The first connecting block 411, the pressing block 412 and the second connecting block 413 are fixedly connected to improve the stability of the connecting assembly 410.

In this embodiment, the connection assembly 410 is implemented through the first connection block 411, the pressing block 412 and the second connection block 413, and the structure is simple and the stability is good.

Further, the first side of the connecting assembly 410 is provided with a groove 414, a rod 415 perpendicular to the first direction z, i.e. the first direction of the welding head 431 is provided in the groove 414, and the ultrasonic welding assembly 40 further includes: and a connecting shaft 440, one end of the connecting shaft 440 is connected to the electric driving member 30, and the other end of the connecting shaft 440 is connected to the rod body 415.

The other end of connecting axle 440 is equipped with the through-hole parallel with body of rod 415, and the middle part of body of rod 415 sets up in this through-hole, and the both ends of body of rod 415 are connected with the lateral wall of recess 414 respectively, and set up with the lateral wall interval of recess 414 for the other end of connecting axle 440 is unsettled in recess 414, and can rotate along the body of rod 415, can improve the dead problem of output shaft card of electric drive piece 30.

Further, the base 10 is provided with a sliding rail, and the connecting assembly 410 further includes: the sliding block 435, the sliding block 435 is fixedly connected with the second connecting block 413, and the sliding block 435 is also in sliding connection with the sliding rail.

In other embodiments, other structures of the connecting mechanism may be used to achieve the sliding connection between the triplet and the base, and the connection between the triplet and the electric driving member, so long as the connection can be achieved.

Further, the base 10 has an opening, the connecting component 410 and the welding head 431 are located on the same side of the opening, the amplitude modulator 433 of the triplet 430 is inserted through the opening, and the transducer 432 and the displacement sensor 50 are located on the other side of the opening.

In other embodiments, the connection assemblies, triplets, etc. may be provided on the same side of the body, or on non-opposite sides.

Further, the ultrasonic welding machine further includes: the limiting mechanism 70 is disposed between the base 10 and the ultrasonic welding assembly 40 along the first direction z, and the limiting mechanism 70 is disposed on a side of the ultrasonic welding assembly 40 away from the weld holder 20 and is configured to limit displacement of the ultrasonic welding assembly 40 relative to the base 10 moving away from the weld holder 20.

The limiting mechanism 70 may include, but is not limited to, a limiting post, disposed along the first direction z, where one end of the limiting post is connected to the base 10 and the other end is used to abut the ultrasonic welding assembly 40.

Wherein the dampener 60 may include, but is not limited to, a hydraulic damper.

In other embodiments, the proximity detection assembly 80 may also be implemented using infrared sensors or the like.

The displacement sensor 50, the stopper mechanism 70, the buffer 60, the proximity detection assembly 80, and the transducer 432 of the present embodiment are disposed on the side of the base 10 facing away from the welding head 431 and the mount 20, and the influence of these components on welding can be improved.

In some embodiments, the electric drive 30 comprises an electric cylinder.

In some embodiments, the base 10 includes a top plate and a side plate, one end of the limiting post, the buffer 60 and the electric driver 30 are mounted on the top plate, and the welding base 20, the ultrasonic welding assembly 40, the displacement sensor 50, the baffle 820 of the proximity detection assembly 80 and the side plate are mounted on the side plate.

In some embodiments, the base 10 further includes an extension plate extending from an end of the side plate facing away from the top plate toward a second direction, wherein the second direction is opposite to the extension direction of the top plate, and the extension plate is disposed parallel to the top plate. Because the plurality of parts are arranged on the top plate, the extending plates opposite to the extending direction of the top plate are arranged, the gravity center of the whole ultrasonic welding machine can be adjusted, and the stability of the ultrasonic welding machine is improved.

The controller is also electrically connected to the proximity detection assembly 80 to control the operation of the proximity detection assembly 80 and to receive feedback signals therefrom.

In other embodiments, the controller may also be provided integrally with the electric cylinder.

In other embodiments, the electric cylinder may be replaced with an electric motor.

The foregoing description is only of embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present utility model or directly or indirectly applied to other related technical fields are included in the scope of the present utility model.

Claims

1. An ultrasonic welder, comprising:

a base;

the welding seat is arranged on the seat body;

the electric driving piece is arranged on the seat body;

the ultrasonic welding assembly is arranged on one side of the welding seat and is distributed with the welding seat along a first direction, the ultrasonic welding assembly is connected with the seat body in a sliding manner along the first direction and is connected with the electric driving piece, the electric driving piece transmits driving force to the ultrasonic welding assembly, and the ultrasonic welding assembly moves along the first direction relative to the welding seat so as to adjust a welding gap between the ultrasonic welding assembly and the welding seat;

wherein, the ultrasonic welding machine still includes:

the displacement sensor is arranged on the base body, the displacement sensor obtains the displacement of the ultrasonic welding assembly relative to the welding base along the first direction, and the electric driving piece is used for adjusting the driving of the ultrasonic welding assembly based on the displacement.

2. The ultrasonic welder of claim 1, further comprising:

and the controller is connected with the electric driving piece, the ultrasonic welding assembly and the displacement sensor, acquires the displacement from the displacement sensor, controls the electric driving piece to work based on the displacement, and also controls the ultrasonic welding assembly to work.

3. The ultrasonic welder according to claim 1 or 2, wherein the ultrasonic welding assembly is provided with a standard part, and the displacement sensor comprises:

the sensor body is arranged on the seat body;

the detection part extends along the first direction, one end of the detection part is connected with the sensor body, and the projection of the other end of the detection part towards the first direction is overlapped with the projection of the standard component towards the first direction;

wherein the ultrasonic welding assembly moves relative to the weld seat in the first direction.

4. The ultrasonic welder of claim 1 or 2, wherein the ultrasonic welding assembly comprises:

and the triple piece is in sliding connection with the base along the first direction, and a welding head of the triple piece is connected with the electric driving piece.

5. The ultrasonic welder of claim 4, wherein the ultrasonic welding assembly further comprises:

the first side of the connecting component is connected with the electric driving piece, the second side of the connecting component is connected with one end of the welding head, which is away from the welding seat, and the first side and the second side are arranged oppositely; the connecting component is also connected with the amplitude modulator of the triplet, and the connecting component is in sliding connection with the base along the first direction.

6. The ultrasonic welder of claim 5, wherein the first side is provided with a groove, wherein a rod body perpendicular to the first direction is provided in the groove, and wherein the ultrasonic welding assembly further comprises:

and one end of the connecting shaft is connected with the electric driving piece, and the other end of the connecting shaft is connected with the rod body.

7. The ultrasonic welder of claim 5 wherein the base has an aperture, the connection assembly and the welding head are on the same side of the aperture, the amplitude modulator of the triplet is threaded through the aperture, and the transducer of the triplet and the displacement sensor are on the other side of the aperture.

8. The ultrasonic welder of claim 1, further comprising:

the limiting mechanism is arranged between the ultrasonic welding assembly and the seat body, is arranged on one side, deviating from the welding seat, of the ultrasonic welding assembly, and is configured to limit the displacement, deviating from the welding seat, of the ultrasonic welding assembly relative to the seat body.

9. The ultrasonic welder of claim 1, further comprising:

and the buffer piece is arranged between the seat body and the ultrasonic welding assembly.

10. The ultrasonic welder of claim 1, wherein the electric drive comprises an electric cylinder.

11. The ultrasonic welder of claim 1, further comprising:

and the proximity detection assembly is arranged between the seat body and the ultrasonic welding assembly and is configured to detect whether the ultrasonic welding assembly moves to a preset position along the seat body.

12. The ultrasonic welder of claim 11, wherein the proximity detection assembly comprises:

the baffle is arranged on the seat body;

the detection piece is arranged on the ultrasonic welding assembly, and the ultrasonic welding assembly is determined to move to the preset position when the detection piece is overlapped with the baffle.