CN112894115A

CN112894115A - Ultrasonic welding device

Info

Publication number: CN112894115A
Application number: CN202011585249.5A
Authority: CN
Inventors: 周宏建; 陈政伟
Original assignee: SBT Engineering Systems Co Ltd
Current assignee: SBT Engineering Systems Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-06-04

Abstract

The invention discloses an ultrasonic welding device, and relates to the technical field of transistor processing and manufacturing. The supporting component of the device comprises a supporting frame and a supporting plate fixed above the supporting frame; the control box is fixedly connected with the support frame and is arranged below the support plate along the vertical direction; the welding assembly comprises a support, a welding head connected with the support in a sliding mode along the Z-axis direction, and an ultrasonic generator connected with the welding head, the support is fixed to the supporting plate, and the ultrasonic generator is fixed in the control box; the welding assembly further comprises a first driving piece, and the first driving piece is connected with the welding head; the clamping piece is arranged below the welding head and used for clamping a piece to be welded; the first moving assembly is connected with the clamping piece and can drive the clamping piece to move along the X-axis direction; the second moving assembly is fixed above the supporting plate and fixedly connected with the first moving assembly, and can drive the first moving assembly to move along the Y-axis direction; the roller is fixed at the bottom of the support frame. The welding device can improve the welding efficiency while ensuring the welding stability.

Description

Ultrasonic welding device

Technical Field

The invention relates to the technical field of transistor processing and manufacturing, in particular to an ultrasonic welding device.

Background

An Insulated Gate Bipolar Transistor (IGBT) is a composite fully-controlled voltage-driven power Semiconductor device composed of a Bipolar Junction Transistor (BJT) and an Insulated Gate Field Effect Transistor (MOS), and has an input terminal of an MOSFET and an output terminal of a PNP Transistor, and thus can be regarded as a darlington Transistor with an MOS input. The variable frequency power supply integrates the advantages of high input impedance of an MOSFET and low conduction voltage drop of a power Transistor (GTR), has the characteristics of easiness in driving, large peak current capacity, self-turn-off, high switching frequency (10-40kHz) and the like, gradually replaces a thyristor and a gate turn-off thyristor, is a new generation of power electronic device which is developed most rapidly at present, and is widely applied to variable frequency power supplies with small volume and high efficiency, motor speed regulation and inverter welding machines.

In the IGBT production process, the copper terminal and the copper substrate in the IGBT are welded by adopting an ultrasonic welding device, copper molecules are mutually fused between the copper terminal and the copper substrate after ultrasonic welding, no chemical change occurs, no extra resistance is generated in the conductive process, and the conductive performance of the IGBT is improved. In addition, the tension between the copper terminal and the copper substrate is increased by ultrasonic welding, and the mechanical stability of the IGBT is improved. However, because the number of copper terminals of the IGBT is large and the shape is complex, the ultrasonic welding machine in the prior art cannot realize one-time stable welding, which results in unstable welding performance and low welding efficiency.

Disclosure of Invention

The invention aims to provide an ultrasonic welding device, which can weld a plurality of different copper terminals simultaneously in the production process of welding an IGBT (insulated gate bipolar translator), improves the welding stability and improves the welding efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme:

an ultrasonic welding apparatus comprising:

the supporting component comprises a supporting frame and a supporting plate fixed above the supporting frame;

the control box is fixedly connected with the support frame and is arranged below the support plate along the vertical direction;

the welding assembly comprises a support, a welding head and an ultrasonic generator, wherein the welding head is connected with the support in a sliding mode along the Z-axis direction, the ultrasonic generator is connected with the welding head, the support is fixed on the supporting plate, and the ultrasonic generator (43) is fixed in the control box; the welding assembly further comprises a first driving piece, the first driving piece is connected with the welding head, and the first driving piece can drive the welding head to rotate;

the clamping piece is arranged below the welding head and is used for clamping a piece to be welded;

the first moving assembly is connected with the clamping piece and can drive the clamping piece to move along the X-axis direction;

the second moving assembly is fixed above the supporting plate and fixedly connected with the first moving assembly, and can drive the first moving assembly to move along the Y-axis direction;

and the roller is fixed at the bottom of the support frame and is used for moving the ultrasonic welding device.

Optionally, the supporting component further comprises a fixing frame and an acrylic plate, the fixing frame is fixedly connected with the supporting plate and is respectively located on two sides of the supporting plate in the vertical direction, the acrylic plate is fixedly connected with the fixing frame to form a closed containing cavity, and the welding component, the clamping piece, the first moving component and the second moving component are located in the containing cavity.

Optionally, a power supply and a host module electrically connected with the power supply are arranged in the control box, and the first driving piece, the ultrasonic generator, the first moving assembly and the second moving assembly are all electrically connected with the host module.

Optionally, the ultrasonic welding device further comprises an alarm lamp, the alarm lamp is fixed on the fixing frame and electrically connected with the host module, and the alarm lamp can indicate the working state of the ultrasonic welding device.

Optionally, the ultrasonic welding device further includes a safety grating, and the safety grating is fixed to the fixing frame and electrically connected to the host module.

Optionally, the welding assembly further includes a first guide rail extending along the Z-axis direction, a first slider slidably connected to the first guide rail, a fixture mounted on the first slider, and a second driving member connected to the first slider, the first guide rail is fixedly connected to the support, the fixture is used for clamping the welding head, and the second driving member can drive the first slider to slide along the first guide rail.

Optionally, the welding assembly further comprises a fixing seat, a sleeve, a connecting shaft and a bearing, the fixing seat is fixedly connected with the first sliding block, an outer ring of the bearing is fixedly connected with the fixing seat, an inner ring of the bearing is fixedly connected with the sleeve, one end of the sleeve is connected with the first driving piece through the connecting shaft, and the clamp is fixed at the other end of the sleeve.

Optionally, the first moving assembly comprises a supporting platform fixed above the second moving assembly, a second guide rail fixed on the supporting platform and extending along the X-axis direction, a second slider in sliding fit with the second guide rail, and a third driving member connected with the second slider, the clamping member is fixedly connected with the second slider, and the third driving member is fixed on the supporting platform and can drive the second slider to slide along the second guide rail.

Optionally, the first movable assembly further comprises a dust cover, the dust covers are arranged at two ends of the second guide rail, and the two dust covers are fixedly connected with the supporting platform.

Optionally, the second moving assembly includes a third guide rail fixed to the support plate and extending along the Y-axis direction, a third slider slidably engaged with the third guide rail, and a fourth driving member connected to the third slider, the support platform is fixedly connected to the third slider, and the fourth driving member can drive the third slider to slide along the third guide rail.

The invention has the beneficial effects that: according to the ultrasonic welding device, the control box is supported and fixed through the support frame, the support plate is arranged above the support frame to support the welding assembly, the clamping piece, the first moving assembly and the second moving assembly, the to-be-welded part is clamped through the clamping piece, the clamping piece can be driven to move along the X axis through the first moving assembly, the first moving assembly can be driven to move along the Y axis through the second moving assembly, the to-be-welded part can move in the X axis direction and the Y axis direction, the to-be-welded part is placed below the welding head, welding can be conveniently carried out through the welding head, meanwhile, the clamping piece can be enabled to clamp a plurality of to-be-welded parts to be welded simultaneously through the movement of the to-be-welded part, and welding efficiency is improved; meanwhile, the welding head can move along the Z-axis direction to ensure that the height of the welding head can be adjusted, and the welding head can be driven to rotate along the axis of the welding head through the first driving piece, so that the flexibility of the welding head can be ensured; the clamping piece is used for clamping the part to be welded, so that the welding stability is improved; in addition, be provided with the gyro wheel in the support frame bottom, can remove this ultrasonic welding device through the gyro wheel to can guarantee that the device's removal effect is better, further enlarge this ultrasonic welding device's application range.

Drawings

FIG. 1 is a schematic view of an ultrasonic welding apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of an ultrasonic welding apparatus according to an embodiment of the present invention from a second perspective;

FIG. 3 is a schematic view of a portion of a weld stack of an ultrasonic welding apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a clamping member of an ultrasonic welding apparatus according to an embodiment of the present invention;

fig. 5 is a schematic structural view of the inside of a control box of an ultrasonic welding apparatus according to an embodiment of the present invention.

In the figure:

100-a piece to be welded; 101-a copper substrate; 102-copper terminals;

1-a support frame; 2-a support plate;

3-a control box; 31-a power supply; 32-cam switch; 33-a door; 34-PLC; 35-an industrial personal computer; 36-low voltage components;

4-welding the assembly; 41-support; 42-a welding head; 43-ultrasonic generator; 44-a first drive member; 45-a first guide rail; 46-a first slide; 47-a clamp; 48-a second drive member; 49-a fixed seat; 410-a sleeve; 411-a connecting shaft; 412-a bearing; 413-a first support frame; 414-a second support; 415-a coupling;

5-a clamping member;

6-a first moving assembly; 61-a support platform; 62-a second guide rail; 63-a second slider; 64-a third drive member; 65-a dust cover;

7-a second moving assembly; 71-a third guide rail; 72-a third slide; 73-a fourth drive;

8-a roller; 9-a fixing frame; 10-acrylic sheet; 11-a warning light; 12-a security grating; 13-tank chain; 14-a start button; 15-emergency stop button; 16-touch screen.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1-5, the ultrasonic welding device comprises a supporting assembly, a control box 3, a welding assembly 4, a clamping member 5, a first moving assembly 6, a second moving assembly 7 and a roller 8, wherein the supporting assembly comprises a supporting frame 1 and a supporting plate 2 fixed above the supporting frame 1; the control box 3 is fixedly connected with the support frame 1 and is arranged below the support plate 2 along the vertical direction; the welding assembly 4 comprises a support 41, a welding head 42 connected with the support 41 in a sliding manner along the Z-axis direction, and an ultrasonic generator 43 connected with the welding head 42, wherein the support 41 is fixed on the support plate 2, and the ultrasonic generator 43 is fixed in the control box 3; the welding assembly 4 further comprises a first driving element 44, the first driving element 44 is connected with the welding head 42, and the first driving element 44 can drive the welding head 42 to rotate; the clamping piece 5 is arranged below the welding head 42 and is used for clamping the piece to be welded 100; the first moving assembly 6 is connected with the clamping piece 5 and can drive the clamping piece 5 to move along the X-axis direction; the second moving component 7 is fixed above the supporting plate 2 and fixedly connected with the first moving component 6, and the second moving component 7 can drive the first moving component 6 to move along the Y-axis direction; the roller 8 is fixed at the bottom of the support frame 1 and used for moving the ultrasonic welding device. It can be understood that the ultrasonic welding device supports and fixes the control box 3 through the support frame 1, and the support plate 2 is arranged above the support frame 1 to support the welding component 4, the clamping component 5, the first moving component 6 and the second moving component 7, the to-be-welded component 100 is clamped through the clamping component 5, the clamping component 5 can be driven to move along the X-axis direction through the first moving component 6, the first moving component 6 can be driven to move along the Y-axis direction through the second moving component 7, further, the to-be-welded component 100 can move along the X-axis direction and the Y-axis direction, the to-be-welded component 100 is placed below the welding head 42, the welding head 42 is convenient to use for welding, meanwhile, the clamping component 5 can be ensured to clamp a plurality of to-be-welded components 100 to be welded for simultaneous welding through the movement of the to-be-welded components 100; meanwhile, the welding head 42 can move along the Z-axis direction to ensure that the height of the welding head 42 can be adjusted, and the first driving part 44 can drive the welding head 42 to rotate along the axis of the welding head 42, so that the flexibility of the welding head 42 can be ensured; the clamping piece 5 clamps the part to be welded 100, so that the welding stability is improved; in addition, be provided with gyro wheel 8 in support frame 1 bottom, can remove this ultrasonic welding device through gyro wheel 8 to can guarantee that the device's removal effect is better, further enlarge this ultrasonic welding device's application range.

As shown in fig. 4, in this embodiment, the to-be-welded component 100 is an IGBT, and includes a copper substrate 101 and a plurality of copper terminals 102, which are all fixed on the clamping member 5, the first moving assembly 6 and the second moving assembly 7 drive the clamping member 5 to move along the X axis direction and the Y axis direction, and the welding head 42 moves along the Z axis direction and can rotate along its own axis, so that it can be ensured that the ultrasonic welding apparatus can realize four-axis movement, thereby ensuring that the copper substrate 101 and the plurality of copper terminals 102 can be welded at the same time by the welding head 42, and improving the welding efficiency. In other embodiments, the to-be-welded member 100 may have other structures, and the to-be-welded member 100 may be provided in plurality.

As shown in fig. 1 and 2, in the present embodiment, the cross section of the supporting frame 1 is rectangular, the four rollers 8 are respectively disposed at four corners of the bottom surface of the supporting frame 1, and the rollers 8 are universal wheels and fixed on the supporting frame 1 by bolts. It will be appreciated that the provision of universal wheels ensures that the ultrasonic welding apparatus is more mobile. In other embodiments, the rollers 8 may not be universal wheels, and the number may also be adaptively adjusted according to actual use requirements.

Optionally, the supporting assembly further includes a fixing frame 9 and an acrylic plate 10, the fixing frame 9 is fixedly connected to the supporting plate 2 and is located on two sides of the supporting plate 2 in the vertical direction with the supporting frame 1, the acrylic plate 10 is fixedly connected to the fixing frame 9 to form a closed accommodating cavity, and the welding assembly 4, the clamping member 5, the first moving assembly 6 and the second moving assembly 7 are located in the accommodating cavity. It can be understood that the welding assembly 4, the clamping member 5, the first moving assembly 6 and the second moving assembly 7 can be protected by the box-type structure formed by the fixed frame 9 and the acrylic plate 10, and the external operator can be protected; meanwhile, the acrylic plate 10 is made of transparent materials, so that the sight of an operator cannot be shielded, and the welding condition and progress can be observed conveniently. In this embodiment, mount 9 is the aluminium alloy, and the light in weight of aluminium alloy can reduce this ultrasonic welding device's weight, treats welding piece 100 for placing simultaneously for being convenient for, is provided with the door that can open and shut on mount 9, and the frame of door also adopts the aluminium alloy and also seals through ya keli board 10. In other embodiments, the fixing frame 9 may be made of other materials, and other transparent materials may be used instead of the acrylic plate 10.

Optionally, as shown in fig. 1 to 3, the welding assembly 4 further includes a first guide rail 45 extending along the Z-axis direction, a first slider 46 slidably connected to the first guide rail 45, a clamp 47 mounted on the first slider 46, and a second driving member 48 connected to the first slider 46, wherein the first guide rail 45 is fixedly connected to the support 41, the clamp 47 is used for clamping the welding head 42, and the second driving member 48 can drive the first slider 46 to slide along the first guide rail 45. Specifically, the two first guide rails 45 are arranged at intervals along the width direction of the support 41, the four first sliders 46 are arranged, each two of the first sliders 46 are in a group, the two first sliders 46 in one group are arranged at intervals along the Z-axis direction, the two groups of first sliders 46 are respectively connected with the two first guide rails 45 in a sliding manner, and the clamp 47 is arranged between the two first guide rails 45 and is connected with the two groups of first sliders 46. The welding assembly 4 further includes a first support frame 413, the first driving member 44 is fixed on the first support frame 413, and the first support frame 413 is connected to the first sliding block 46. In this embodiment, the first driving member 44 is a motor, and the welding head 42 is driven to rotate around its axis by the rotation of the motor. In other embodiments, the first drive member 44 may have other configurations; only one first guide rail 45 and one first slider 46 may be provided, or other structures such as a guide rod and a guide bush may be used instead of the first guide rail 45 and the first slider 46.

Optionally, the welding assembly 4 further includes a fixing seat 49, a sleeve 410, a connecting shaft 411 and a bearing 412, the fixing seat 49 is fixedly connected to the first slider 46, an outer ring of the bearing 412 is fixedly connected to the fixing seat 49, an inner ring of the bearing 412 is fixedly connected to the sleeve 410, one end of the sleeve 410 is connected to the first driving member 44 through the connecting shaft 411, and the clamp 47 is fixed to the other end of the sleeve 410. Specifically, the welding assembly 4 further comprises a coupling 415, and the connecting shaft 411 is connected with the output end of the first driving member 44 through the coupling 415. The two sides of the fixed seat 49 are respectively fixedly connected with the two sets of first sliding blocks 46, the bearing 412 is arranged inside the fixed seat 49, the sleeve 410 is arranged in the inner ring of the bearing 412 in a penetrating manner, the sleeve is rotatably connected with the fixed seat 49 through the bearing 412, and the first support frame 413 is fixedly connected with the fixed seat 49. It will be understood that the rotation of the first driving member 44 can drive the coupling 415 to rotate, and then the connecting shaft 411 to rotate, and further the sleeve 410 and the bearing 412 to rotate, and the welding head 42 is fixed to the sleeve 410 by the fixture 47, so that the welding head 42 can be driven to rotate. Meanwhile, the stability of the welding head 42 in the rotating process can be ensured through the support of the bearing 412 and the fixed seat 49. In this embodiment, the bearing 412 is an angular contact ball bearing, but in other embodiments, the bearing 412 may be of another type, or only one of the sleeve 410 and the connecting shaft 411 may be provided.

In this embodiment, the welding assembly 4 further includes a second supporting frame 414, the second supporting frame 414 is fixed on the support 41 and is used for supporting and fixing the second driving element 48, the second driving element 48 is connected to one of the first sliding blocks 46, and the second driving element 48 can drive the first sliding block 46 to slide along the first guide rail 45, so that the height of the welding head 42 in the Z-axis direction can be adjusted. The second driving member 48 may be a hydraulic cylinder, an electric push rod, or a linear motor, which is not limited herein.

Alternatively, as shown in fig. 1 and fig. 2, the first moving assembly 6 includes a supporting platform 61 fixed above the second moving assembly 7, a second guide rail 62 fixed on the supporting platform 61 and extending along the X-axis direction, a second sliding block 63 slidably engaged with the second guide rail 62, and a third driving element 64 connected with the second sliding block 63, the clamping element 5 is fixedly connected with the second sliding block 63, and the third driving element 64 is fixed on the supporting platform 61 and can drive the second sliding block 63 to slide along the second guide rail 62. Specifically, for guaranteeing the stability of slip effect and support, second guide rail 62 is two, sets up along Y axle direction interval, and second slider 63 is two at least, corresponds sliding connection with two second guide rail 62 respectively, and second slider 63 all is connected with holder 5, can guarantee holder 5's stability. The third driving member 64 may be a hydraulic cylinder, an electric push rod, or a linear motor, and is not limited herein. In other embodiments, only one second guide rail 62 and one second sliding block 63 may be provided, and other structures such as guide rods and guide sleeves may be used instead of the second guide rail 62 and the second sliding block 63.

Optionally, the first moving assembly 6 further includes a dust cover 65, the two ends of the second guide rail 62 are both provided with the dust cover 65, and the dust cover 65 is fixedly connected with the supporting platform 61. Specifically, the ends of the two second rails 62 can be located simultaneously within the dust cover 65. It can be understood that the dust cover 65 can protect the second guide rail 62 and the second slider 63, prevent the second guide rail 62 and the second slider 63 from being polluted by external dust, and can also prevent an external operator from accidentally touching the second guide rail 62 and the second slider 63, thereby providing safety protection. As for the size of the dust cover 65, it is ensured that the second rail 62 is shielded without affecting the movement of the second slider 63 on the second rail 62, and without affecting the clamping of the clamp 5 to-be-welded member 100 and the welding of the welding head 42 to-be-welded member 100.

Alternatively, the second moving assembly 7 includes a third guide rail 71 fixed to the support plate 2 and extending along the Y-axis direction, a third slider 72 slidably engaged with the third guide rail 71, and a fourth driver 73 connected to the third slider 72, the support platform 61 is fixedly connected to the third slider 72, and the fourth driver 73 can drive the third slider 72 to slide along the third guide rail 71. Specifically, the fourth driver 73 is fixed to the support plate 2. It can be understood that the fourth driving element 73 can drive the third slider 72 to slide along the third guide rail 71, so that the clamping member 5 can clamp the workpiece 100 to be welded in the Y-axis direction. The fourth driving member 73 may be a hydraulic cylinder, an electric push rod, or a linear motor, and is not limited herein.

In this embodiment, as shown in fig. 2, the ultrasonic welding device further includes a tank chain 13, one end of the tank chain 13 is fixed on the supporting platform 61, and the other end of the tank chain 13 is fixed on the supporting plate 2, and the tank chain 13 is internally provided with a power line and a signal line of the third driving member 64 and the fourth driving member 73, so that the power line and the signal line can be supported and protected, and the power line and the signal line can be prevented from being damaged. In other embodiments, other support structures may be used instead of the tank chain 13, or the tank chain 13 may not be provided.

Alternatively, as shown in fig. 1, fig. 2 and fig. 5, a power supply 31 and a host module electrically connected to the power supply 31 are disposed in the control box 3, and the first driving member 44, the ultrasonic generator 43, the first moving assembly 6 and the second moving assembly 7 are all electrically connected to the host module. Specifically, the host module includes a PLC34, an industrial personal computer 35 and a low-voltage component 36 which are electrically connected, and the first driving member 44, the second driving member 48, the third driving member 64, the fourth driving member 73 and the ultrasonic generator 43 are all electrically connected to the power supply 31 through power lines and electrically connected to the PLC34 through signal lines. It can be understood that the power supply 31 can supply power to the host module, and the PLC34, the industrial personal computer 35 and the low-voltage component 36 can cooperate with each other to control the on and off of the first driving element 44, the second driving element 48, the third driving element 64, the fourth driving element 73 and the ultrasonic generator 43, so that the movement of the welding head 42 in the Z-axis direction and the rotation thereof can be automatically controlled, and the movement of the to-be-welded part 100 in the X-axis direction and the Y-axis direction can improve the control accuracy. The specific structures and operating principles of the PLC34, the industrial personal computer 35, and the low-voltage device 36 are all prior art, and are not described herein again. In other embodiments, the host module may have other configurations.

In this embodiment, the control box 3 further includes a box door 33, and the control box 3 can be opened or closed by the box door 33, so that the internal structure of the control box 3 can be easily disassembled and replaced. The side wall of the control box 3 is also provided with a cam switch 32, the cam switch 32 is electrically connected with the power supply 31, and the cam switch 32 is screwed to control the on-off of the power supply 31, so that when the ultrasonic welding device is not used, the power supply 31 is cut off, and the purpose of saving electric energy is achieved while the safety is protected. In other embodiments, a common switch may be used instead of the cam switch 32.

In this embodiment, this ultrasonic welding device still includes start button 14 and emergency stop button 15, and start button 14 and the equal fixed mounting of emergency stop button 15 are on backup pad 2, and all are connected with the host computer module electricity, can control this ultrasonic welding device's start through start button 14, can control this ultrasonic welding device's emergency stop through emergency stop button 15 to can avoid dangerous emergence. The ultrasonic welding device further comprises a touch screen 16, the touch screen 16 is fixedly installed on the fixing frame 9, all parameters in the welding process can be input and set through the touch screen 16, and the convenience of operation of the ultrasonic welding device can be guaranteed through the touch screen 16. The specific structures and control principles of the start button 14, the emergency stop button 15 and the touch screen 16 are already known in the art, and will not be described herein again. In other embodiments, the specific installation positions of the start button 14, the emergency stop button 15 and the touch screen 16 can be adjusted according to actual use requirements.

In order to avoid potential safety hazard during the welding process, optionally, as shown in fig. 1, the ultrasonic welding device further includes a safety light barrier 12, and the safety light barrier 12 is fixed to the fixing frame 9 and electrically connected to the host module. In this embodiment, the device can only be operated using the start button 14 if the security barrier 12 is not blocked. It will be appreciated that when the safety barrier 12 is not blocked, it is ensured that no one is approaching the holder 9, and that the ultrasonic welding device can be started by pressing the start button 14, which further ensures the safety of the operator.

Optionally, as shown in fig. 1 and 2, the ultrasonic welding device further includes a warning lamp 11, the warning lamp 11 is fixed to the fixing frame 9 and electrically connected to the host module, and the warning lamp 11 can indicate the working state of the ultrasonic welding device. Specifically, alarm lamp 11 fixed mounting just is located the top position on mount 9 to can guarantee that the position of pilot lamp 11 is obvious, can play better indicative function. The warning light 11 is divided into three layers, each of which can display a different color, respectively for defining different operating states of the ultrasonic welding apparatus. In this embodiment, the warning lamp 11 can display green, yellow and red, wherein green represents that the ultrasonic welding device is in a welding operation state, yellow represents that the ultrasonic welding device is in a standby operation state, and red represents that the ultrasonic welding device is in a failure and safety warning state, and the three colors of displays are controlled by the PLC 34. The control principle of the PLC34 for controlling the color change of the warning lamp 11 is prior art and will not be described in detail herein. In other embodiments, the color display of the warning lamp 11 may be adaptively adjusted, and the display of the different operating states of the ultrasonic welding apparatus on the warning lamp 11 may also be adaptively increased or decreased.

The ultrasonic welding device in the embodiment belongs to a semi-automatic welding device. In the welding process, an operator is required to fix the copper terminal 102 and the copper substrate 101 of the IGBT on the clamping member 5 and manually place the clamping member 5 on the supporting platform 61; then, the touch screen 16 needs to be operated to find out the original point position of the clamping piece 5, and in the operation process, the original points of the X axis, the Y axis, the Z axis and the R axis of the welding head 42 rotating around the original points are respectively positioned and are arranged on the touch screen 16 for storage; and coordinate programming of a welding step is required to be carried out on different IGBTs in advance, and the programming process is to position the coordinates of different copper terminals 102 and copper substrates 101 and carry out step-by-step and ordered welding. After inputting the programmed program into the touch screen 16, the operator needs to rotate the cam switch 32, turn on the power supply 31, and then press the start button 14, the ultrasonic welding device will automatically position the IGBT to the position of the copper terminal 102, and then the ultrasonic generator 43 will emit ultrasonic waves and transmit the ultrasonic waves to the welding head 42, so as to weld the copper terminal 102 and the copper substrate 101. When the welding is completed, the ultrasonic welding device automatically returns to the original position, and then the operator is required to manually replace the new IGBT and press the start button 14 again to perform the welding process again. In other embodiments, when the to-be-welded part 100 has other structures, the welding process is repeated, and the details are not repeated here.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An ultrasonic welding apparatus, comprising:

the supporting component comprises a supporting frame (1) and a supporting plate (2) fixed above the supporting frame (1);

the control box (3) is fixedly connected with the support frame (1) and is arranged below the support plate (2) along the vertical direction;

the welding assembly (4) comprises a support (41), a welding head (42) connected with the support (41) in a sliding mode along the Z-axis direction, and an ultrasonic generator (43) connected with the welding head (42), the support (41) is fixed to the supporting plate (2), and the ultrasonic generator (43) is fixed in the control box (3); the welding assembly (4) further comprises a first driving element (44), the first driving element (44) is connected with the welding head (42), and the first driving element (44) can drive the welding head (42) to rotate;

the clamping piece (5) is arranged below the welding head (42) and is used for clamping a piece to be welded (100);

the first moving assembly (6) is connected with the clamping piece (5) and can drive the clamping piece (5) to move along the X-axis direction;

the second moving component (7) is fixed above the supporting plate (2) and fixedly connected with the first moving component (6), and the second moving component (7) can drive the first moving component (6) to move along the Y-axis direction;

and the roller (8) is fixed at the bottom of the support frame (1) and is used for moving the ultrasonic welding device.

2. The ultrasonic welding device according to claim 1, characterized in that the supporting component further comprises a fixing frame (9) and an acrylic plate (10), the fixing frame (9) is fixedly connected with the supporting plate (2) and is respectively located on two sides of the supporting plate (2) along the vertical direction with the supporting frame (1), the acrylic plate (10) is fixedly connected with the fixing frame (9) to form a closed accommodating cavity, and the welding component (4), the clamping member (5), the first moving component (6) and the second moving component (7) are located in the accommodating cavity.

3. The ultrasonic welding device according to claim 2, characterized in that a power source (31) and a host module electrically connected with the power source (31) are arranged in the control box (3), and the first driving member (44), the ultrasonic generator (43), the first moving assembly (6) and the second moving assembly (7) are all electrically connected with the host module.

4. The ultrasonic welding device according to claim 3, characterized in that it further comprises a warning lamp (11), said warning lamp (11) being fixed to said fixed mount (9) and being electrically connected to said host module, said warning lamp (11) being able to indicate the operating state of said ultrasonic welding device.

5. The ultrasonic welding device according to claim 3, characterized in that it further comprises a safety light barrier (12), said safety light barrier (12) being fixed to said holder (9) and being electrically connected to said host module.

6. The ultrasonic welding device according to claim 1, characterized in that the welding assembly (4) further comprises a first guide rail (45) extending in the Z-axis direction, a first slider (46) slidably connected to the first guide rail (45), a clamp (47) mounted to the first slider (46), and a second driving member (48) connected to the first slider (46), the first guide rail (45) being fixedly connected to the support (41), the clamp (47) being configured to clamp the welding head (42), the second driving member (48) being configured to drive the first slider (46) to slide along the first guide rail (45).

7. The ultrasonic welding device according to claim 6, characterized in that the welding assembly (4) further comprises a fixed seat (49), a sleeve (410), a connecting shaft (411) and a bearing (412), the fixed seat (49) is fixedly connected with the first slider (46), an outer ring of the bearing (412) is fixedly connected with the fixed seat (49) and an inner ring of the bearing is fixedly connected with the sleeve (410), one end of the sleeve (410) is connected with the first driving member (44) through the connecting shaft (411), and the clamp (47) is fixed at the other end of the sleeve (410).

8. The ultrasonic welding device according to claim 1, characterized in that the first moving assembly (6) comprises a supporting platform (61) fixed above the second moving assembly (7), a second guide rail (62) fixed on the supporting platform (61) and extending along the X-axis direction, a second slider (63) slidably engaged with the second guide rail (62), and a third driving member (64) connected with the second slider (63), the clamping member (5) is fixedly connected with the second slider (63), and the third driving member (64) is fixed on the supporting platform (61) and can drive the second slider (63) to slide along the second guide rail (62).

9. The ultrasonic welding device according to claim 8, characterized in that said first moving assembly (6) further comprises dust covers (65), said dust covers (65) are provided at both ends of said second guide rail (62), and both said dust covers (65) are fixedly connected with said supporting platform (61).

10. The ultrasonic welding device according to claim 8, characterized in that the second moving assembly (7) comprises a third guide rail (71) fixed to the support plate (2) and extending along the Y-axis direction, a third slider (72) slidably engaged with the third guide rail (71), and a fourth driving member (73) connected with the third slider (72), the support platform (61) is fixed to the third slider (72), and the fourth driving member (73) can drive the third slider (72) to slide along the third guide rail (71).