CN217071121U - Ultrasonic welding system for connecting contact pins - Google Patents

Abstract

An object of the utility model is to provide an ultrasonic bonding system for connecting contact pin, it includes first transmission band, first carrier, welding station subassembly and welding station subassembly. The first carrier is arranged on the first conveying belt and is driven by the first driving unit to move along the extending direction of the first conveying belt. The welding station assembly comprises an ultrasonic welding machine, a second conveying belt, a second carrier and a connecting pin conveying assembly. The ultrasonic welding head welds at the welding station, and the both ends of second transmission band extending direction are for getting material station and welding station respectively, and the second carrier is by second drive unit drive with the extending direction mobile along the second transmission band, and connecting pin transports the subassembly and is used for transporting connecting pin to welding station department. Move and carry subassembly and have the clamping jaw, the clamping jaw is mobile between material taking station and first conveyer belt. This ultrasonic welding system can promote welding efficiency and welding quality to connecting pin.

Description

Ultrasonic welding system for connecting contact pins

Technical Field

The utility model relates to an ultrasonic bonding field especially relates to an ultrasonic bonding system for connecting contact pin.

Background

The connecting pins (Pin needle ) are a metal substance used for completing the conduction (transmission) of electricity (signals), the welding process of the Pin needle is the core of the IGBT industry, and the welding quality is directly embodied in the safety and the service life of the central control module.

The traditional welding process for the connecting contact pin mainly adopts a tin soldering mode, when welding, firstly, tin paste is uniformly coated on a DBC lining plate to be welded, then the lining plate coated with the tin paste enters a high-temperature furnace, and the tin paste is melted and then enters tin soldering equipment for tin soldering and cooling.

However, the inventor finds that the traditional welding process for the connecting pin has a plurality of working procedures and uncontrollable welding quality: the shape of the solder paste smeared on the circuit board is uncontrollable after the solder paste is dissolved at high temperature, the solder paste is easy to stay outside a welding area, the risk of short circuit of the circuit board is caused while the circuit board is polluted, and therefore a new welding system is urgently needed to be provided, and the welding efficiency and the welding quality of the connection pin welding can be improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an ultrasonic welding system for connecting contact pin can promote welding efficiency and welding quality to connecting contact pin.

To achieve the foregoing objective, an ultrasonic welding system includes a first conveyor belt, a first carrier, a welding station assembly, and a welding station assembly. The first carrier is arranged on the first conveying belt and driven by the first driving unit to move along the extending direction of the first conveying belt, the first carrier is provided with a first accommodating groove, and the IGBT module to be welded can be accommodated and fixed in the first accommodating groove. The welding station assembly comprises an ultrasonic welding machine, a second conveying belt, a second carrier and a connecting pin conveying assembly. Ultrasonic welding machine has the welding station, ultrasonic bonding tool among the ultrasonic welding machine is in the welding station welds, the both ends of second transmission band extending direction be respectively for getting the material station and the welding station, the second carrier is driven by second drive unit in order to follow the extending direction of second transmission band is mobile, has the second holding tank, treats that welded IGBT module can hold and be fixed in the second holding tank, connect the contact pin and transport the subassembly and be used for transporting to welding station department connecting the contact pin. The transfer component is provided with a clamping jaw, and the clamping jaw can move between the material taking station and the first conveying belt.

In one or more embodiments, the ultrasonic welding system further includes a calibration assembly, an image acquisition unit, and a control system. The calibration assembly is in transmission connection with a second carrier, wherein the second carrier is provided with a reference part, the image acquisition unit is used for acquiring the offset distance between an IGBT module in the second carrier and the reference part and outputting an offset signal, and the control system controls the calibration assembly to adjust the position of the second carrier at the welding station according to the offset signal.

In one or more embodiments, the ultrasonic welding has a lift mechanism that can adjust the height of the ultrasonic horn when actuated.

In one or more embodiments, the welding station assembly further comprises a work platform, the first conveying belt is arranged on one side of the work platform, and the welding station assembly and the transferring assembly are arranged on the work platform.

In one or more embodiments, the welding station assemblies have a pair, and the welding station assemblies are symmetrically arranged on the working platform.

In one or more embodiments, the work platform is provided with a waste outlet, and the clamping jaw can move to the position above the waste outlet.

In one or more embodiments, a dust removal assembly is disposed on the work platform.

In one or more embodiments, the transfer assembly is a robotic arm.

In one or more embodiments, the connecting pin carrying assembly includes:

the vibrating screen is internally provided with a connecting contact pin to be welded;

the connecting pin conveying belt is arranged at an outlet of the vibrating screen;

the overturning plate is provided with an overturning clamping jaw and is arranged at an outlet of the connecting pin conveying belt, the overturning clamping jaw can clamp the connecting pin in the connecting pin conveying belt, and the overturning plate can rotate so as to overturn the connecting pin clamped in the overturning clamping jaw; and

and the material turntable is arranged at the downstream of the turnover turntable and is used for conveying the turnover connecting pins to the welding station.

In one or more embodiments, the ultrasonic horn has a vacuum suction port into which a connecting pin in the material carousel can be vacuum sucked.

The beneficial effects of the utility model reside in that:

by adopting the ultrasonic welding system, the IGBT module and the connecting contact pin can be quickly and continuously welded by utilizing an ultrasonic welding process, the welding process steps are few, and the production efficiency is high. Meanwhile, the ultrasonic welding process is adopted to weld the connecting pins, so that the risk of short circuit of the circuit board when the circuit board is polluted by traditional solder paste welding can be overcome, and the welding quality of the connecting pins is improved.

The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Moreover, like reference numerals are used to refer to like elements throughout. In the drawings:

FIG. 1 illustrates a schematic view of an ultrasonic welding system according to some embodiments of the present application;

FIG. 2 illustrates a partially enlarged schematic view at a first conveyor belt according to some embodiments of the present application;

FIG. 3 illustrates an enlarged partial schematic view of an ultrasonic welding system according to some embodiments of the present application;

FIG. 4 is an enlarged, fragmentary schematic view of a material carousel according to some embodiments of the present application;

FIG. 5 is an enlarged, fragmentary schematic view of a flipping disk according to some embodiments of the present application.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

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 application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In order to improve the welding efficiency and the welding quality of the connection pin, according to one or more embodiments of the present invention, an ultrasonic welding system for connecting the connection pin is provided, please refer to fig. 1, fig. 1 shows a schematic diagram of an ultrasonic welding system according to some embodiments of the present application, the connection pin can be welded on the IGBT module through the ultrasonic welding system, and the ultrasonic welding system for connecting the connection pin includes a first transmission belt 1, a first carrier 2, a welding station component 3 and a transfer component 4.

Fig. 2 is a partially enlarged schematic view of a first conveyor belt according to some embodiments of the present disclosure, in which a first carrier 2 is disposed on the first conveyor belt 1 and is movable along an extending direction of the first conveyor belt 1, the first carrier 2 has a first receiving groove 20, and an IGBT module 91 to be welded can be received and fixed in the first receiving groove 20.

The welding station assembly 3 includes an ultrasonic welding machine 31, a second conveyor belt 32, a second carrier 33 and a connecting pin conveying assembly 34, the ultrasonic welding machine 31 has a welding station 310, an ultrasonic welding head in the ultrasonic welding machine 31 is welded at the welding station, two ends of the second conveyor belt 32 in the extending direction are respectively a material taking station 320 and the welding station 310, the second carrier 33 has a second accommodating groove 330, and the IGBT module 91 to be welded can be accommodated and fixed in the second accommodating groove 330. The second carrier 33 is movably disposed on the second conveyor 32, so that when the second carrier 33 is movable, the second carrier can move along the second conveyor 32 between the welding station 310 and the material taking station 320. The connecting pin carrying assembly 34 is used for carrying the connecting pins to the welding station 310, so that the ultrasonic welder 31 can perform ultrasonic welding on the connecting pins and the IGBT module 91 at the welding station 310.

The transfer component 4 is provided with a clamping jaw 40, the clamping jaw 40 can clamp the IGBT module 91, when the transfer component 4 moves, the clamping jaw 40 can move between the material taking station 320 and the first conveyor belt 1, so that the IGBT module 91 can be clamped and conveyed from the first carrier 2 to the second carrier 33 or from the second carrier 2 to the first carrier 2.

The ultrasonic welding system for connecting pins further comprises a first driving unit 5 and a second driving unit 6, wherein when the first driving unit 5 is actuated, the first carrier 2 is driven to move along the first conveying belt 1, and when the second driving unit 6 is actuated, the second carrier 33 is driven to move along the second conveying belt 32. In a specific embodiment, the first drive unit 5 and the second drive unit 6 are servo motors.

When the connecting pins are subjected to ultrasonic welding, firstly, the first driving unit 5 drives the first carrier 2 to move along the first transmission belt 1 to the position below the clamping jaw 40, the clamping jaw 40 moves to clamp and transfer the IGBT module 91 in the first carrier 2 to the second carrier 2, then the second driving unit 6 drives the second carrier 2 to move along the second transmission belt 32 so as to move from the material taking station 320 to the welding station 310, meanwhile, the connecting pin conveying assembly 34 conveys the connecting pins to the welding station 310, then the ultrasonic welding machine 31 carries out ultrasonic welding on the connecting pins and the IGBT module 91 at the welding station 310, after the welding is finished, the second driving unit 6 drives the second carrier 2 to move along the second transmission belt 32, the connecting pins move from the welding station 310 to the material taking station 320, then the clamping jaw 40 moves to clamp and transfer the welded product from the second carrier 2 to the first carrier 2, thereby completing the soldering process of the connection pins.

By adopting the ultrasonic welding system with the structure, the IGBT module and the connecting contact pin can be quickly and continuously welded by utilizing an ultrasonic welding process, the steps of the welding process are few, and the production efficiency is high. Meanwhile, the ultrasonic welding process is adopted to weld the connecting pins, so that the risk of short circuit of the circuit board when the circuit board is polluted by traditional solder paste welding can be overcome, and the welding quality of the connecting pins is improved.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 3, fig. 3 is a partially enlarged schematic view of an ultrasonic welding system according to some embodiments of the present application, the ultrasonic welding system for connecting pins further includes a calibration component 71, an image acquisition unit 72 and a control system, the second carrier 2 has a reference portion, the image acquisition unit 72 acquires an offset distance between an IGBT module 91 in the second carrier 2 and the reference portion of the second carrier 2 and outputs an offset signal, and the calibration component 71 is in transmission connection with the second carrier 2; the control system controls the calibration assembly 71 to adjust the position of the second carrier 2 at the welding station 310 according to the bias signal, so that the requirement that the ultrasonic welding head in the ultrasonic welding machine 31 welds the IGBT module 91 and the connection pins at the accurate position can be met. In one embodiment, the calibration assembly 71 is a two-axis adjustment mechanism, and the image acquisition unit 72 acquires the offset distance between the edge of the IGBT module 91 and the edge of the second carrier 2, and is controlled by the control system to adjust the position of the second carrier 2 in the XY plane. In one particular embodiment, image capture unit 72 is a camera.

According to some embodiments of the present application, the first driving unit 5 and/or the second driving unit 6 are controlled by the control system to start and stop, for example, the first camera 51 and the second camera 52 determine whether the second carrier 2 is moved in place to control the start and stop of the second driving unit 6, so as to improve the welding efficiency during connection welding. Of course, in some other suitable embodiments, the start and stop of the first driving unit 5 and/or the second driving unit 6 may be controlled manually. In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

According to some embodiments of the present application, the ultrasonic welding machine 31 further comprises a lifting mechanism, the lifting mechanism can adjust the height of the ultrasonic welding head, and the lifting mechanism can adjust the height of the ultrasonic welding head at the welding station, so that the ultrasonic welding head can be adjusted to the proper height for welding.

According to some embodiments of the present application, the ultrasonic welding system for connecting pins further includes a work platform 100, the first conveyor belt 1 is disposed on one side of the work platform 100, and the welding station assembly 3 and the transfer assembly 4 are disposed on the work platform 100.

According to some embodiments of the present application, the welding station assemblies 3 have a pair and are symmetrically disposed on the work platform 100, thereby enabling to perform ultrasonic welding to the connection pins synchronously, so as to improve welding efficiency to the connection pins. In other embodiments, the welding station assemblies 3 may be different from those shown, one or three and more than those shown, disposed on the work platform 100.

According to some embodiments of the present application, a waste outlet 73 is further provided on work platform 100, and jaws 40 of transfer assembly 4 are movable above waste outlet 73 so that rejected products can be transported by jaws 40 above waste outlet 73 for recycling. In a specific embodiment, the control system determines whether the welded product is qualified according to the information collected by the image collecting unit 72.

According to some embodiments of the present application, a dust removing assembly 74 is further disposed on the working platform 100, and the dust removing assembly 74 can remove dust from components and products on the working platform 100 to improve the quality of the products after ultrasonic welding.

According to some embodiments of the present application, the transferring component 4 is a mechanical arm, which can be driven to move by an external additional driving device to change the posture, and can also be driven to move by an internal driving device of the transferring component.

According to some embodiments of the present application, the connecting pin transport assembly 34 includes: a vibrating screen 341, a connecting pin conveyor belt 342, a flipping disk 343, and a material rotating disk 344. Referring to fig. 4 and 5 in combination, fig. 4 is a partially enlarged schematic view of a material rotating disc according to some embodiments of the present application, and fig. 5 is a partially enlarged schematic view of a material rotating disc according to some embodiments of the present application. Wherein, the inside of shale shaker 341 holds the connecting pin that waits to weld, and connecting pin conveyer belt 342 sets up in the exit of shale shaker 341, and upset dish 343 has upset clamping jaw 3431, sets up in the exit of connecting pin conveyer belt 342, and upset clamping jaw 3431 can carry out the centre gripping to the connecting pin in connecting pin conveyer belt 342. The flipping disk 343 is rotatable so that the connecting pins held in the flipping jaws are flipped. In particular, in the embodiment shown in the figures, the flipping disk 343 may be driven to rotate by a servo motor, so that the flipping claw 3431 flips the clamped connection pin. The material turntable 344 is disposed at the downstream of the turnover turntable 343 and is used for conveying the turnover connecting pins to a welding station, and the turnover connecting pins are upward in small heads and are more easily taken.

Further, according to some embodiments of the present application, the ultrasonic horn has a vacuum suction port into which the connecting pins in the material carousel 344 may be vacuum sucked, thereby facilitating material removal and welding.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (10)

1. An ultrasonic welding system for connecting pins, comprising:

a first conveyor belt;

the first carrier is arranged on the first conveying belt and driven by a first driving unit to move along the extending direction of the first conveying belt, the first carrier is provided with a first accommodating groove, and the IGBT module to be welded can be accommodated and fixed in the first accommodating groove;

a welding station assembly comprising:

the ultrasonic welding machine is provided with a welding station, and an ultrasonic welding head in the ultrasonic welding machine performs welding at the welding station;

the two ends of the second conveying belt in the extending direction are respectively a material taking station and the welding station;

the second carrier is driven by a second driving unit to move along the extending direction of the second conveying belt and is provided with a second accommodating groove, and the IGBT module to be welded can be accommodated and fixed in the second accommodating groove; and

the connecting contact pin conveying assembly is used for conveying the connecting contact pin to a welding station; and

the transfer component is provided with a clamping jaw, and the clamping jaw can move between the material taking station and the first conveying belt.

2. The ultrasonic welding system for connecting pins of claim 1 further comprising:

the calibration assembly is in transmission connection with the second carrier;

an image acquisition unit; and

a control system;

the second carrier is provided with a reference part, the image acquisition unit is used for acquiring the offset distance between an IGBT module in the second carrier and the reference part and outputting an offset signal, and the control system controls the calibration assembly to adjust the position of the second carrier at the welding station according to the offset signal.

3. An ultrasonic welding system for connecting pins as defined in claim 1, wherein said ultrasonic welding has a lift mechanism which is actuated to adjust the height of said ultrasonic horn.

4. The ultrasonic bonding system for connecting pins as claimed in claim 1, further comprising a work platform, said first conveyor belt being disposed on one side of said work platform, said bonding station assembly and said transfer assembly being disposed on said work platform.

5. An ultrasonic welding system for connecting pins as defined in claim 4 wherein said pair of welding station assemblies is symmetrically disposed on said work platform.

6. An ultrasonic welding system for connecting pins as defined in claim 4 wherein said work platform has a scrap exit opening therein and said jaws are movable above said scrap exit opening.

7. An ultrasonic welding system for connecting pins as defined in claim 4 wherein a dust removal assembly is provided on said work platform.

8. The ultrasonic welding system for connecting pins as defined in claim 1, wherein said transfer assembly is a robotic arm.

9. An ultrasonic welding system for connecting pins as defined in claim 1 wherein said connecting pin carrying assembly includes:

the vibrating screen is internally provided with a connecting contact pin to be welded;

the connecting contact pin conveying belt is arranged at an outlet of the vibrating screen;

the overturning plate is provided with an overturning clamping jaw and is arranged at an outlet of the connecting pin conveying belt, the overturning clamping jaw can clamp the connecting pin in the connecting pin conveying belt, and the overturning plate can rotate so as to overturn the connecting pin clamped in the overturning clamping jaw; and

and the material turntable is arranged at the downstream of the turnover turntable and is used for conveying the turnover connecting pins to the welding station.

10. An ultrasonic welding system for connecting pins as defined in claim 9 wherein said ultrasonic horn has a vacuum suction port into which a connecting pin in said material carousel may be vacuum sucked.

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