CN219944921U

CN219944921U - Terminal positioning device for ultrasonic welding

Info

Publication number: CN219944921U
Application number: CN202320982824.8U
Authority: CN
Inventors: 段忠福; 孔令营; 陈来兴
Original assignee: Wuxi Jiaocheng Intelligent Technology Co ltd
Current assignee: Wuxi Jiaocheng Intelligent Technology Co ltd
Priority date: 2023-04-27
Filing date: 2023-04-27
Publication date: 2023-11-03
Anticipated expiration: 2033-04-27

Abstract

The utility model belongs to the technical field of terminal welding, and particularly relates to a terminal positioning device for ultrasonic welding, which comprises a bottom plate, a base plate, fixing blocks and a pressing plate, wherein the base plate is arranged on the bottom plate; the bottom of the pressing plate is connected with a positioning block, the front side of the pressing plate is connected with a side plate, the middle of the terminal is abutted against the positioning block through the side plate so as to position the terminal, the bottom of the terminal is provided with a welding spot, the welding spot is in contact with the substrate, and the terminal is connected with the substrate for forming through ultrasonic welding; the utility model can ensure that the terminal is positioned more firmly, ensure the consistency of the terminal positioning, ensure the position of the welding spot to be more stable by positioning the terminal, and improve the stability of the terminal during welding.

Description

Terminal positioning device for ultrasonic welding

Technical Field

The utility model belongs to the technical field of terminal welding, and particularly relates to a terminal positioning device for ultrasonic welding.

Background

The IGBT (insulated gate bipolar transistor) is a core component of a power electronic system, has an independent electric energy conversion function, and with the continuous upgrade of strategic industries such as new energy, rail transit, smart grid, etc., requirements for miniaturization, modularization, and high power density are put forward for the IGBT module. The IGBT module is connected with the high-power semiconductor chip circuit structure by adopting an electric power terminal in an ultrasonic welding mode, so that the atomic-level close electric contact can be realized.

In the process of ultrasonic welding the terminal, because the shape and structure difference of the terminal is great, when positioning the terminal, if the welding position of locating part distance terminal is far away, lead to positioning stability and precision inadequately easily, the terminal can take place to drop for a long time of use, causes welding quality to be relatively poor or produces the defective products.

For this reason, there is a need for an improvement over the drawbacks of the prior art to overcome the deficiencies in practical use.

Disclosure of Invention

Based on the above-mentioned drawbacks and deficiencies of the prior art, it is an object of the present utility model to at least solve one or more of the above-mentioned problems of the prior art, in other words, to provide a terminal positioning device for ultrasonic welding that meets one or more of the above-mentioned needs.

In order to achieve the aim of the utility model, the utility model adopts the following technical scheme:

the utility model provides a terminal positioning device for ultrasonic welding, which comprises a bottom plate, a substrate, fixed blocks and a pressing plate, wherein the substrate is arranged on the bottom plate; the bottom of clamp plate is connected the locating piece, the locating piece is connected the curb plate, will through the curb plate the middle part butt of terminal in the locating piece is in order to realize to the location of terminal, the bottom of terminal has the solder joint, the solder joint with the base plate contact, will through ultrasonic welding the terminal with the base plate connection shaping.

As a preferable scheme, the pressing plate is sequentially provided with a plurality of limiting grooves, and the top of each terminal is correspondingly clamped and matched with one limiting groove.

Preferably, the bottom of the pressing plate is provided with a leaning block, and the leaning block is arranged between the two terminals and is respectively in contact fit with the terminals.

Preferably, two ends of the pressing plate are respectively connected to the two fixing blocks through positioning pins.

Preferably, the side plate is detachably connected with the positioning block.

As a preferred scheme, the side plate is provided with a plurality of hollowed-out grooves, and each hollowed-out groove is respectively and correspondingly arranged on one terminal.

Preferably, the fixing blocks protrude above the substrate, and the two fixing blocks are symmetrically distributed relative to the axis of the substrate.

Preferably, the base plate is detachably connected with the bottom plate.

Preferably, the positioning block is provided with a positioning groove, and the middle part of the terminal is clamped in the positioning groove.

Preferably, handles are respectively arranged on two sides of the bottom plate.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides a terminal positioning device for ultrasonic welding, which is used for positioning the upper part and the middle part of a terminal respectively so as to ensure that the terminal is positioned more firmly and ensure the consistency of the terminal positioning, and is used for ensuring the position of a welding spot to be more stable and improving the stability of the terminal during welding.

The utility model provides a terminal positioning device for ultrasonic welding, which is capable of avoiding scratches on a terminal in the positioning process, protecting the integrity of the terminal and being beneficial to improving the yield of products by positioning the terminal by adopting a non-metal material.

Drawings

In order to more clearly illustrate 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 described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other embodiments of the drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of a terminal positioning device according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of a connection structure between a side plate and a terminal according to an embodiment of the present utility model;

FIG. 3 is a schematic view showing a connection structure between a pressing plate and a terminal according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a terminal and a substrate according to an embodiment of the present utility model;

in the figure: 1 bottom plate, 11 handles, 2 base plates, 21 bolts, 3 fixed blocks, 4 pressing plates, 41 limit grooves, 42 close blocks, 43 locating pins, 44 locating blocks, 45 locating grooves, 5 side plates, 51 hollow grooves, 52 lock nuts, 6 terminals and 61 welding spots.

Detailed Description

In order to more clearly illustrate the embodiments of the present utility model, specific embodiments of the present utility model will be described below with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the utility model, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "middle", "front and rear", "up and down", "left and right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1 to 4, according to some embodiments of the present utility model, there is provided a terminal positioning device for ultrasonic welding, which includes a base plate 1, a base plate 2, fixing blocks 3 and a pressing plate 4, wherein the base plate 2 is mounted on the base plate 1, the fixing blocks 3 are respectively mounted on the left and right sides of the base plate 1, the pressing plate 4 is mounted between the two fixing blocks 3, the pressing plate 4 is provided with a limiting groove 41, and the limiting groove 41 is in clamping fit with the upper portion of a terminal 6; the bottom of clamp plate 4 is connected locating piece 44, and locating piece 44 connects curb plate 5, and the middle part butt of terminal 6 is in locating piece 44 through curb plate 5 to realize the location to terminal 6, be connected the shaping through ultrasonic welding terminal 6 and base plate 2, before ultrasonic welding terminal 6 and base plate 2 shaping, is fixed a position terminal 6 earlier, in order to guarantee terminal 6 welded stability, avoid taking place the not firm phenomenon of welding.

According to some embodiments of the present utility model, each terminal 6 has two pads 61 at the bottom thereof, the pads 61 are in contact with the substrate 2 after the positioning of the terminals 6 is completed, and the pressure between each pad 61 and the substrate 2 is balanced, and the pads 61 are soldered to the substrate 2 by ultrasonic-welding the pads 61.

Specifically, the substrate 2 is detachably connected to the base plate 1, the substrate 2 is locked to the base plate 1 by bolts 21, and the substrate 2 can be supported and fixed by the base plate 1. The terminal 6 is welded on the substrate 2 through the ultrasonic welding device, and when one substrate 2 and one or more terminals 6 are welded, the substrate 2 is replaced through disassembling the bolts 21, so that the operation is convenient and the realization is easy.

According to some embodiments of the present utility model, the left and right sides of the base plate 1 are respectively provided with the fixing blocks 3, the two fixing blocks 3 are symmetrically arranged relative to the central axis of the base plate 2, the fixing blocks 3 protrude above the base plate 2, and a certain height space is reserved for installing terminals.

Further, two ends of the pressing plate 4 are respectively connected to the two fixing blocks 3 through the positioning pins 43, and two positioning pins 43 are installed on each fixing block 3, in other words, two pressing plates 4 can be installed on the fixing blocks 3 located on two sides of the substrate 2, and the two pressing plates 4 are arranged back to back.

Further, the bottom of the pressing plate 4 is sequentially provided with a plurality of limiting grooves 41, the top of each terminal 6 is correspondingly clamped and matched with one limiting groove 41, the upper portion of the terminal 6 is limited through the limiting groove 41, and the limiting grooves 41 can limit the left and right directions and the up and down directions of the terminal 6 so as to avoid the position movement of the terminal 6 in the left and right directions or the up and down directions, and the stability of terminal installation is improved.

In a specific embodiment, the pressing plate 4 is provided with three limiting grooves 41 for limiting three terminals, so that the requirement of welding the three terminals at one time can be met, the number of the limiting grooves on the pressing plate is not limited to the above limitation, and the three limiting grooves can be particularly arranged according to actual requirements.

According to some embodiments of the present utility model, the positioning block 44 has a positioning groove 45, and the middle portion of the terminal 6 is clamped in the positioning groove 45. Specifically, because the structural shapes of the terminals 6 are different, in order to ensure that the middle parts of the terminals 6 can be completely clamped in the positioning grooves 45, the height of the positioning grooves 45 is larger than that of the middle parts of the terminals 6, on one hand, the positioning of the middle parts of the terminals 6 is firmer, the tilting of the terminals is prevented, so that the balance of two welding spots of the terminals is ensured, and on the other hand, the terminal and the substrate are more convenient to detach after the welding is finished.

Further, a plurality of terminals 6 are arranged along the length direction of the positioning groove 45, so that a plurality of terminals 6 can be welded on one substrate 2, and the welding efficiency can be improved.

According to some embodiments of the present utility model, the side plate 5 is detachably connected to the positioning block 44, and the terminal 6 is fastened to the positioning block 44 by the side plate 5, so that the front-rear direction of the terminal 6 can be limited, and the terminal 6 is prevented from being moved in the front-rear direction. Specifically, the positioning groove 45 is provided with a mounting hole, correspondingly, the side plate 5 is provided with a through hole, and by installing a locking nut 52 in the through hole, the locking nut 52 penetrates through the through hole and is matched with the mounting hole, so as to lock the side plate 5 on the positioning block 44, thereby realizing the fixation and limitation of the middle part of the terminal 6.

Further, the mounting positions of the lock nuts 52 are staggered with the terminals 6 to improve the reliability of locking the terminals 6. When the terminal 6 is welded to the base plate 2, the lock nut 52 is removed to disengage the side plate 5 from the positioning block 44, thereby unloading the terminal.

Further, the side plate 5 has a plurality of hollow grooves 51, and each hollow groove 51 is respectively disposed on one terminal 6. The hollow grooves 51 and the through holes are distributed in a staggered mode, the terminals 6 can be avoided through the hollow grooves 51, the side plates 5 are prevented from rubbing or damaging the terminals 6, and the surface precision of the terminals can be protected.

According to some embodiments of the present utility model, the bottom of the pressing plate 4 is provided with a leaning block 42, and the leaning block 42 is arranged between the two terminals 6 and is respectively in contact fit with the terminals 6. The abutting block 42 is made of a non-metal material, preferably a plastic material, so that the terminal 6 can be fixed by arranging the abutting block 42 to be abutted against one another, and on the other hand, the upper portion of the terminal 6 is clamped in the limit groove 41 of the pressing plate 4 to easily damage the surface of the terminal 6 due to the non-metal material of the pressing plate 4, so that scratches are formed on the terminal 6 to influence the conductivity.

According to some embodiments of the present utility model, the handles 11 are symmetrically disposed on two sides of the base plate 1, and the two handles 11 are disposed to facilitate the position transfer or carrying of the base plate 1, so as to adapt to different working situations.

The foregoing is only illustrative of the preferred embodiments and principles of the present utility model, and changes in specific embodiments will occur to those skilled in the art upon consideration of the teachings provided herein, and such changes are intended to be included within the scope of the utility model as defined by the claims.

Claims

1. The terminal positioning device for ultrasonic welding is characterized by comprising a bottom plate, a base plate, fixed blocks and a pressing plate, wherein the base plate is arranged on the bottom plate, the fixed blocks are respectively arranged on the left side and the right side of the bottom plate, the pressing plate is arranged between the two fixed blocks, the pressing plate is provided with a limit groove, and the limit groove is clamped and matched with the upper part of a terminal; the bottom of clamp plate is connected the locating piece, the locating piece is connected the curb plate, will through the curb plate the middle part butt of terminal in the locating piece is in order to realize to the location of terminal, the bottom of terminal has the solder joint, the solder joint with the base plate contact, will through ultrasonic welding the terminal with the base plate connection shaping.

2. The terminal positioning device for ultrasonic welding according to claim 1, wherein the pressing plate is sequentially provided with a plurality of limiting grooves, and the top of each terminal is correspondingly clamped and matched with one limiting groove.

3. A terminal positioning device for ultrasonic welding according to claim 1, wherein the bottom of the pressing plate is provided with a tightening block which is disposed between the two terminals and is in contact engagement with the terminals, respectively.

4. The terminal positioning device for ultrasonic welding according to claim 1, wherein both ends of the pressing plate are connected to the two fixing blocks by positioning pins, respectively.

5. The terminal positioning device for ultrasonic welding according to claim 1, wherein said side plate is detachably connected to said positioning block.

6. The device for ultrasonic welding according to claim 1, wherein the side plate has a plurality of hollow grooves, and each hollow groove is respectively and correspondingly arranged on one terminal.

7. The terminal positioning device for ultrasonic welding according to claim 1, wherein the fixing blocks protrude above the substrate, and the two fixing blocks are symmetrically arranged with respect to an axis of the substrate.

8. The terminal positioning device for ultrasonic welding according to claim 1, wherein said base plate is detachably connected to said bottom plate.

9. The terminal positioning device for ultrasonic welding according to claim 1, wherein the positioning block is provided with a positioning groove, and the middle part of the terminal is clamped in the positioning groove.

10. A terminal positioning device for ultrasonic welding according to claim 1, wherein handles are provided on both sides of the base plate, respectively.