CN216326092U - Welding fixture for lead frame - Google Patents
Welding fixture for lead frame Download PDFInfo
- Publication number
- CN216326092U CN216326092U CN202122562608.1U CN202122562608U CN216326092U CN 216326092 U CN216326092 U CN 216326092U CN 202122562608 U CN202122562608 U CN 202122562608U CN 216326092 U CN216326092 U CN 216326092U
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- pressing
- lead frame
- plate
- welding
- finger
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Abstract
The utility model relates to the technical field of welding fixtures, and discloses a welding fixture for a lead frame, which comprises a bottom plate and a pressing plate, wherein the bottom plate is provided with a welding position for placing the lead frame, the pressing plate is arranged on the bottom plate and pressed on one part of a pin of the lead frame, the pressing plate corresponds to a hollow part arranged at the welding position and used for exposing the lead frame, and the edge of the hollow part is provided with a pressing finger used for pressing one part of the pin of the lead frame. According to the utility model, the pressing finger is arranged, so that the pressing area is increased, the pressing effect is improved, the problem of infirm welding is reduced, and the qualified rate of welding wires is improved.
Description
Technical Field
The utility model relates to the technical field of welding fixtures, in particular to a welding fixture for a lead frame.
Background
When a metal wire is welded on a lead frame by a wire bonding machine, a welding fixture is generally required to press and fix the lead frame, and then wire bonding can be performed. In the prior art, a welding fixture is usually a part of a pin of a press-fit lead frame, the press-fit area is small, the press-fit is poor, the problem of infirm welding is easy to occur, and the qualified rate of welding wires is low.
SUMMERY OF THE UTILITY MODEL
The purpose of the utility model is: the utility model provides a welding jig for lead frame can improve the pressfitting effect, reduces to appear welding insecure problem, improves the bonding wire qualification rate.
In order to achieve the above object, the present invention provides a welding fixture for a lead frame, including a bottom plate and a pressing plate, wherein the bottom plate has a welding position for placing the lead frame, the pressing plate is disposed on the bottom plate and presses on a portion of a lead of the lead frame, the pressing plate corresponds to a hollow portion disposed at the welding position, the hollow portion is used for exposing the lead frame, and a pressing finger is disposed on an edge of the hollow portion and is used for pressing on a portion of the lead frame.
Preferably, the press finger is plate-shaped, one end of the press finger is connected to the edge of the hollow portion, and the other end of the press finger is used for pressing on a part of the lead frame.
Preferably, the lower surface of the pressure finger is flush with the lower surface of the pressure plate.
Preferably, the upper surface of the pressure finger is lower than the upper surface of the pressure plate.
Preferably, the number of the pressing fingers is at least one pair, and two pressing fingers of each pair are oppositely arranged.
Preferably, the width of the press finger is the same as the width of the lead on the base island of the lead frame.
Preferably, the edge of the hollow part is provided with a chamfer.
Preferably, the wall around the hollow portion is disposed obliquely so that a projection of an edge of the hollow portion of the lower surface of the pressure plate on a horizontal plane falls inside an edge of the hollow portion of the upper surface of the pressure plate.
Preferably, the pressing plate and the bottom plate have the same thickness.
The utility model provides a welding fixture for a lead frame, which has the following beneficial effects compared with the prior art:
the welding clamp for the lead frame comprises a bottom plate and a pressing plate, wherein the bottom plate is provided with a welding position for placing the lead frame, the pressing plate is arranged on the bottom plate and presses one part of a pin of the lead frame, the pressing plate corresponds to a hollow part arranged at the welding position and is used for exposing the lead frame, and a pressing finger is arranged on the edge of the hollow part and is used for pressing one part of the pin of the lead frame. The pressing finger is arranged, so that the pressing area is increased, the pressing effect is improved, the problem of infirm welding is reduced, and the qualified rate of the welding wires is improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a side view of fig. 1.
FIG. 3 is a schematic structural diagram of a platen according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a lead frame according to an embodiment of the present invention.
In the figure, 1, a bottom plate; 2. pressing a plate; 3. a hollow part; 4. pressing fingers; 5. a lead frame; 6. a base island; 7. and (7) welding wires.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-2, a welding fixture for a lead frame 5 according to a preferred embodiment of the present invention includes a base plate 1 and a pressing plate 2, the base plate 1 has a welding position for placing the lead frame 5 thereon, the pressing plate 2 is disposed on the base plate 1 and presses a portion of a lead of the lead frame 5, the pressing plate 2 is disposed corresponding to the welding position and has a hollow portion 3, the hollow portion 3 is used for exposing the lead frame 5, and a pressing finger 4 is disposed on an edge of the hollow portion 3 and the pressing finger 4 is used for pressing a portion of the lead frame 5. The lead frame 5 is arranged on a welding position, the pressing plate 2 is pressed on the pins of the lead frame 5, the pressing fingers 4 are also pressed on the pins, and the hollowed part 3 exposes the lead frame 5, so that the operation of the wire bonding machine 7 can be facilitated. Through setting up pressure and indicating 4, increase the pressfitting area, improve the pressfitting effect, reduce the insecure problem of welding to appear, improve bonding wire 7 qualification rate.
Referring to fig. 3, in the present embodiment, the pressing finger 4 is shaped like a plate, one end of the pressing finger 4 is connected to the edge of the hollow portion 3, and the other end of the pressing finger 4 is used for pressing a portion of the lead frame 5. In other embodiments, the pressing fingers 4 may be provided in other shapes.
In this embodiment, the lower surface of the pressure finger 4 is flush with the lower surface of the pressure plate 2. This arrangement can facilitate pressing of the leads of the lead frame 5. The upper surface of the pressing finger 4 is lower than the upper surface of the pressing plate 2. With such a structure, the structure of the pressure finger 4 is thin. The width of the press finger 4 is the same as the width of the lead on the base island 6 of the lead frame 5. The number of the pressing fingers 4 is at least one pair, and the two pressing fingers 4 of each pair are oppositely arranged. In other embodiments, other numbers and positions of the pressing fingers 4 may be provided, and in particular implementations, may be provided as desired.
Further, the edge of the hollowed portion 3 is provided with a chamfer. The chamfer can prevent burrs from occurring at the corner of the hollow portion 3. The walls around the hollows 3 are arranged obliquely so that the projection of the edge of the hollow 3 on the lower surface of the pressure plate 2 on the horizontal plane falls inside the edge of the hollow 3 on the upper surface of the pressure plate 2. With this configuration, the lead frame 5 at the bonding position can be viewed from the outside.
In this embodiment, the thickness of the pressing plate 2 is the same as that of the base plate 1, so as to facilitate the implementation of this embodiment.
In summary, the embodiment of the present invention provides a welding fixture, which increases a pressing area, improves a pressing effect, reduces a problem of unstable welding, and improves a yield of a bonding wire 7 by providing a pressing finger 4.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. The welding fixture for the lead frame is characterized by comprising a bottom plate and a pressing plate, wherein the bottom plate is provided with a welding position for placing the lead frame, the pressing plate is arranged on the bottom plate and pressed on one part of pins of the lead frame, a hollowed part is arranged on the pressing plate corresponding to the welding position and used for exposing the lead frame, and pressing fingers are arranged on the edge of the hollowed part and used for pressing one part of the pins of the lead frame.
2. The bonding jig for lead frames according to claim 1, wherein the press finger has a plate shape, one end of the press finger is connected to an edge of the cutout, and the other end of the press finger is used for pressing a portion of the lead frame.
3. The bonding fixture for lead frames according to claim 2, wherein the lower surface of the press finger is flush with the lower surface of the press plate.
4. The bonding jig for lead frames according to claim 3, wherein the upper surface of the pressing finger is lower than the upper surface of the pressing plate.
5. The bonding jig for lead frames according to claim 1, wherein the number of the pressing fingers is at least one pair, and two pressing fingers of each pair are disposed oppositely.
6. The bonding jig for lead frames according to claim 1, wherein the width of the press finger is the same as the width of the lead on the base island of the lead frame.
7. The welding jig for lead frames according to claim 1, wherein edges of the hollows are provided with chamfers.
8. The bonding jig for lead frames according to claim 1, wherein the wall around the cutout is disposed obliquely so that a projection of the edge of the cutout of the lower surface of the pressing plate on a horizontal plane falls inside the edge of the cutout of the upper surface of the pressing plate.
9. The bonding jig for lead frames according to claim 1, wherein the pressing plate has the same thickness as the base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122562608.1U CN216326092U (en) | 2021-10-22 | 2021-10-22 | Welding fixture for lead frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122562608.1U CN216326092U (en) | 2021-10-22 | 2021-10-22 | Welding fixture for lead frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216326092U true CN216326092U (en) | 2022-04-19 |
Family
ID=81181244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122562608.1U Active CN216326092U (en) | 2021-10-22 | 2021-10-22 | Welding fixture for lead frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216326092U (en) |
-
2021
- 2021-10-22 CN CN202122562608.1U patent/CN216326092U/en active Active
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