CN216152194U

CN216152194U - Fixture for lead frame inspection

Info

Publication number: CN216152194U
Application number: CN202122254131.0U
Authority: CN
Inventors: 陈杰华; 熊俊; 张欣; 朱怀亮; 殷杰
Original assignee: Taixing City Yongzhi Electronic Device Co ltd
Current assignee: Taixing City Yongzhi Electronic Device Co ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-04-01
Anticipated expiration: 2031-09-17

Abstract

The utility model relates to the technical field of integrated circuit lead frames, in particular to a clamp for lead frame inspection, which aims to overcome the defects of limited size and inappropriate clamping force of a clamp in the prior art and is mainly realized by the following technical scheme: a jig for lead frame inspection, comprising: the adjusting block, the orbit determination is tied with the adjustment, the adjusting block is established in the lead frame four corners, the adjusting block all is L type and the equal vertical extension in bottom has the board of accepting, the adjusting block slides and establishes on the orbit determination, the orbit determination includes horizontal slide rail and vertical slide rail, adjustment bolt spiro union is established at the adjusting block lateral wall, the adjustment is tied and is equipped with two adjustment bolts on being equipped with a plurality of and every adjusting block at least, the adjustment bolt is including vertical adjustment and lateral adjustment, integrate into an adjustable inspection anchor clamps with multiple inspection anchor clamps, reduce the time of changing different inspection anchor clamps and the cost of producing different inspection anchor clamps, the operation space of inspection anchor clamps has also been reduced simultaneously.

Description

Fixture for lead frame inspection

Technical Field

The utility model relates to the technical field of integrated circuit lead frames, in particular to a clamp for lead frame inspection.

Background

The lead frame is used as a chip carrier of an integrated circuit, is a key structural member for realizing the electrical connection between a leading-out end of an internal circuit of a chip and an external lead by means of bonding materials such as gold wires, aluminum wires and copper wires to form an electrical circuit, plays a role of a bridge connected with an external lead, needs to be used in most semiconductor integrated blocks and is an important basic material in the electronic information industry.

Among the prior art, after the lead frame production shaping, need carry out visual inspection to it and detect, whether the size, the R angle etc. that detect its surface everywhere accord with the standard, adopt the not lead frame of different sizes of anchor clamps correspondence at present, this kind of detection mode is suitable for the trouble, need change and change according to the lead frame and get up more troublesome, waste time and energy, and multiple anchor clamps cost is higher simultaneously. In addition, when examining the lead frame, carry out the centre gripping through anchor clamps and keep the position stable, current furniture probably has the unstable or great condition of clamping-force of centre gripping to cause the lead frame to warp, thereby influence the inspection data, cause later stage process scheme can not accurately be formulated even, influence the final quality of product, directly lead to the production of the condition such as product is scrapped.

Therefore, there is a need for a jig for inspecting lead frames that can solve the above-mentioned problems, and that can make the size of the jig adjustable while ensuring a proper clamping force.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the defects of limited size and inappropriate clamping force of the clamp in the prior art, and provide a clamp for lead frame inspection.

The technical purpose of the utility model is realized by the following technical scheme:

a jig for lead frame inspection, comprising:

the adjusting blocks are arranged at four corners of the lead frame, an accommodating cavity is formed between the adjusting blocks, the lead frame is accommodated in the accommodating cavity, the adjusting blocks are L-shaped, the bottoms of the adjusting blocks vertically extend to form bearing plates, and the adjusting blocks are arranged on the fixed rail in a sliding manner;

the fixed rail comprises a transverse slide rail and a longitudinal slide rail, the transverse slide rail is provided with two adjusting blocks which respectively penetrate through the two adjusting blocks which are arranged transversely and oppositely, and the longitudinal slide rail is also provided with two adjusting blocks which respectively penetrate through the two adjusting blocks which are arranged longitudinally and oppositely;

the adjusting bolt is in threaded connection with the side wall of the adjusting block and is provided with a plurality of adjusting bolts, at least one adjusting bolt is arranged on each adjusting block, and the adjusting bolts comprise longitudinal adjustment and transverse adjustment.

Through adopting above-mentioned technical scheme, this inspection anchor clamps can integrate into an adjustable inspection anchor clamps to multiple inspection anchor clamps, reduces the time of changing different inspection anchor clamps and the cost of producing different inspection anchor clamps, has also reduced the operation space of inspection anchor clamps simultaneously. The inspection clamp is convenient to use, has proper clamping force, can not cause the change of the position and the shape of the lead frame when stressed, and can also play a role in guiding the follow-up process.

Furthermore, the adjusting block comprises a first fixed block, a second movable block, a third movable block and a fourth movable block, the first fixed block, the second movable block, the third movable block and the fourth movable block have the same structure, the first fixed block and the second movable block as well as the third movable block and the fourth movable block are longitudinally arranged oppositely, and the first fixed block and the third movable block as well as the second movable block and the fourth movable block are transversely arranged oppositely.

By adopting the technical scheme, the first fixed block, the second movable block, the third movable block and the fourth movable block are arranged to form the rectangular accommodating groove, so that the rectangular accommodating groove is suitable for the appearance of a lead frame, and the relative positions of the first fixed block, the second movable block, the third movable block and the fourth movable block can be adjusted, so that the inspection clamp can be reused, and the cost is reduced; the movement among the first fixed block, the second movable block, the third movable block and the fourth movable block is limited by the fixed rail, so that the movable blocks are ensured to be finally matched with lead frames with different sizes, and the inspection accuracy is ensured.

Furthermore, wear to be equipped with different vertical slide rails, two on the side that first fixed piece and second movable block, third movable block and fourth movable block kept away from each other respectively vertical slide rail parallel arrangement just stretches out second movable block and fourth movable block, one side spiro union that first fixed block was kept away from to the second movable block has vertical adjustment, one side that third movable block was kept away from to the fourth movable block also spiro union has vertical adjustment, vertical adjustment is in same horizontal plane.

Through adopting above-mentioned technical scheme, vertical displacement is realized to first fixed piece and second movable block, third movable block and fourth movable block on the vertical slide rail to can control the second movable block and vertically keep away from or be close to first fixed piece, the fourth movable block is vertically kept away from or is close to the third movable block, realizes vertically adjusting and makes vertical size laminating lead frame appearance.

Further, wear to be equipped with different horizontal slide rails, two on the side that first fixed piece and third movable block, second movable block and fourth movable block kept away from each other respectively horizontal slide rail parallel arrangement just stretches out third movable block and fourth movable block, one side spiro union that first fixed block was kept away from to third movable block has horizontal adjustment, one side spiro union that second movable block was kept away from to fourth movable block also has horizontal adjustment, horizontal adjustment is in same horizontal plane.

Through adopting above-mentioned technical scheme, lateral displacement is realized to first fixed piece and third movable block, second movable block and fourth movable block on the horizontal slide rail to can control the third movable block and vertically keep away from or be close to first fixed piece, the fourth movable block is vertically kept away from or is close to the second movable block, realizes transversely adjusting and makes vertical size laminating lead frame appearance.

Furthermore, the upper top surfaces of the first fixed block, the second movable block, the third movable block and the fourth movable block are downwards provided with lead-in grooves, the inner surfaces of the lead-in grooves are inclined surfaces, and the depth of the lead-in grooves is not more than one fifth of the depth of the accommodating grooves.

By adopting the technical scheme, the lead-in groove is formed, so that the lead frame can be conveniently scratched in, the convenience of an operator is improved, and after the mutual distance between the first fixed block, the second movable block, the third movable block and the fourth movable block is adjusted, the subsequent lead frame inspection can be more time-saving and labor-saving.

Furthermore, supporting pads are embedded in the bearing plate at the bottom in the first fixed block, the second movable block, the third movable block and the fourth movable block, and the upper surfaces of the supporting pads and the bearing plate are in the same horizontal plane.

Through adopting above-mentioned technical scheme, set up the supporting pad and accept the board coplane, ensure the lead frame and press from both sides the roughness when establishing in anchor clamps, ensure the stationarity of lead frame, convenient inspection, the width of accepting the board simultaneously is less than the length of accepting the board to avoid sheltering from the hole on the lead frame and influence the inspection effect.

Furthermore, sharp edges of all parts of the first fixed block, the second movable block, the third movable block and the fourth movable block are all set to be round corners.

By adopting the technical scheme, sharp edges of the first fixed block, the second movable block, the third movable block and the fourth movable block are in smooth transition, so that accidents such as scratching and the like caused when a user uses the device are avoided.

Furthermore, the inner side walls, close to each other, of the first fixed block, the second movable block, the third movable block and the fourth movable block are provided with scale strips along the height direction, and the zero line of the scale strips is flush with the upper surface of the bearing plate.

Through adopting above-mentioned technical scheme, set up the scale strip and be convenient for measure impression frame side, convenient to use is accurate.

In summary, the technical scheme of the utility model has the following advantages:

1. according to the lead frame inspection clamp provided by the utility model, various inspection clamps are integrated into one adjustable inspection clamp, so that the time for replacing different inspection clamps and the cost for producing different inspection clamps are reduced, and meanwhile, the operation space of the inspection clamps is also reduced.

2. According to the lead frame inspection clamp provided by the utility model, sharp edges of the adjusting block are smoothly transited, so that accidents such as scratching and the like caused by use of a user are avoided; and simultaneously, a scale bar is additionally arranged, so that the measurement and inspection are convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic overall structure diagram of a jig for inspecting a lead frame according to an embodiment of the present invention.

Description of reference numerals:

1. an adjusting block; 11. a first fixed block; 12. a second movable block; 13. a third movable block; 14. a fourth movable block; 15. a lead-in groove; 16. a bearing plate; 161. a support pad; 17. an accommodating chamber; 18. a scale bar; 2. fixing a rail; 21. a transverse slide rail; 22. a longitudinal slide rail; 3. adjusting the bolt; 31. longitudinal adjustment; 32. and (6) transversely adjusting.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

A lead frame inspection fixture, as shown in figure 1, comprises adjusting blocks 1, fixed rails 2 and adjusting bolts 3, wherein the adjusting blocks 1 are symmetrically arranged and form four corners, an accommodating cavity 17 is formed in the center of the adjusting block 1, the accommodating cavity 17 is used for accommodating a lead frame, the adjusting blocks 1 are all L-shaped, the bottoms of the adjusting blocks 1 vertically extend to form bearing plates 16, the fixed rails 2 comprise transverse slide rails 21 and longitudinal slide rails 22, the fixed rails 2 penetrate through the two symmetrically arranged adjusting blocks 1, the adjusting bolts 3 are screwed on the side walls of the adjusting blocks 1, the adjusting bolts 3 are provided with a plurality of adjusting bolts 3, each adjusting block 1 is provided with at least one adjusting bolt 3, each adjusting bolt 3 comprises a longitudinal adjustment 31 and a transverse adjustment 32, this inspection anchor clamps can integrate into an adjustable inspection anchor clamps to multiple inspection anchor clamps, reduces the time of changing different inspection anchor clamps and the cost of producing different inspection anchor clamps, has also reduced the operation space of inspection anchor clamps simultaneously. The inspection clamp is convenient to use, has proper clamping force, can not cause the change of the position and the shape of the lead frame when stressed, and can also play a role in guiding the follow-up process.

As shown in fig. 1, the adjusting block 1 includes a first fixed block 11, a second movable block 12, a third movable block 13 and a fourth movable block 14, the first fixed block 11, the second movable block 12, the third movable block 13 and the fourth movable block 14 have substantially the same structure, and sharp edges of the first fixed block 11, the second movable block 12, the third movable block 13 and the fourth movable block 14 are all in smooth transition, so as to avoid accidents such as scratching when a user uses the adjusting block. The first fixed block 11, the second movable block 12, the third movable block 13 and the fourth movable block 14 are longitudinally arranged oppositely, the first fixed block 11, the third movable block 13, the second movable block 12 and the fourth movable block 14 are transversely arranged oppositely, different longitudinal slide rails 22 are respectively penetrated on the sides of the first fixed block 11, the second movable block 12, the third movable block 13 and the fourth movable block 14 far away from each other, the two longitudinal slide rails 22 are arranged in parallel and extend out of the second movable block 12 and the fourth movable block 14, different transverse slide rails 21 are respectively penetrated on the sides of the first fixed block 11, the third movable block 13, the second movable block 12 and the fourth movable block 14 far away from each other, the two transverse slide rails 21 are arranged in parallel and extend out of the third movable block 13 and the fourth movable block 14, the longitudinal adjustment 31 abuts against the side walls of the transverse slide rails 21 to limit the transverse relative distance, the transverse adjustment 32 abuts against the side walls of the longitudinal slide rails 22 to limit the longitudinal relative distance, and the first fixed block 11, the second movable block 12 and the fourth movable block 14 are arranged oppositely and the transverse slide rails 14 are arranged oppositely, and the longitudinal slide rails are arranged transversely and the side walls of the second movable block 14, The second movable block 12, the third movable block 13 and the fourth movable block 14 form a rectangular accommodating groove so as to adapt to the shape of a lead frame, the relative positions of the first fixed block 11, the second movable block 12, the third movable block 13 and the fourth movable block 14 can be adjusted, the first fixed block 11, the second movable block 12, the third movable block 13 and the fourth movable block 14 can slide on the fixed rail 2, and then the adjusting bolt 3 respectively abuts against the transverse slide rail 21 and the longitudinal slide rail 22 so as to form an accommodating detection groove of the lead frame, and the first fixed block 11, the second movable block 12, the third movable block 13 and the fourth movable block 14 can be changed along with the shape of a lead frame product, so that the detection clamp can be repeatedly used, and the cost is reduced; the movement between the first fixed block 11, the second movable block 12, the third movable block 13 and the fourth movable block 14 is limited by the fixed rail 2, so that the movable blocks are ensured to be finally matched with lead frames with different sizes, and the inspection accuracy is ensured.

As shown in fig. 1, the top surfaces of the first fixed block 11, the second movable block 12, the third movable block 13 and the fourth movable block 14 are all provided with an introduction groove 15 downwards, the introduction groove 15 is arranged in an inward inclined manner, the depth of the introduction groove 15 is not more than one fifth of the depth of the accommodating groove, the introduction groove 15 is arranged to facilitate the lead frame to be drawn in along the trend, so that the convenience of an operator is improved, and after the mutual distance between the first fixed block 11, the second movable block 12, the third movable block 13 and the fourth movable block 14 is adjusted, the subsequent lead frame inspection can be more time-saving and labor-saving. The supporting pad 161 is embedded in the receiving plate 16, the upper surface of the supporting pad 161 and the upper surface of the receiving plate 16 are in the same horizontal plane, and the width of the receiving plate 16 is smaller than the length of the receiving plate 16, so that the inspection effect is prevented from being influenced by shielding holes in the lead frame. Simultaneously first fixed block 11 and second movable block 12, third movable block 13 and fourth movable block 14 all are equipped with scale strip 18 along the direction of height on the inside wall that is close to each other, 18 zero lines of scale strip flush with accept 16 upper surfaces of board, set up supporting pad 161 and accept 16 coplanarities of board, guarantee the roughness when the centre gripping after the lead frame is put into, guarantee the stationarity of lead frame, convenient inspection sets up scale strip 18 and is convenient for measure impression frame side, convenient to use is accurate.

The working principle and the using method of the clamp for the lead frame inspection comprise the following steps: before use, the mutual distances among the first fixed block 11, the second movable block 12, the third movable block 13 and the fourth movable block 14 are adjusted according to the size of a produced lead frame, and the longitudinal distance and the transverse distance are controlled; the lead frame is then placed into the receiving cavity 17 along the lead-in slot 15 for subsequent inspection of the lead frame.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A jig for lead frame inspection, comprising:

the adjusting block (1) is arranged at four corners of the lead frame, an accommodating cavity (17) is formed between the adjusting blocks (1), the lead frame is accommodated in the accommodating cavity (17), the adjusting blocks (1) are L-shaped, the bottoms of the adjusting blocks (1) vertically extend to form bearing plates (16), and the adjusting blocks (1) are arranged on the fixed rail (2) in a sliding manner;

the fixed rail (2) comprises a transverse slide rail (21) and a longitudinal slide rail (22), the transverse slide rail (21) is provided with two adjusting blocks (1) which are transversely and oppositely arranged, and the longitudinal slide rail (22) is also provided with two adjusting blocks (1) which are oppositely and longitudinally arranged;

adjusting bolt (3), adjusting bolt (3) spiro union is established at adjusting block (1) lateral wall, adjusting bolt (3) are equipped with a plurality ofly and are equipped with one adjusting bolt (3) on every adjusting block (1) at least, adjusting bolt (3) are including vertical adjustment (31) and horizontal adjustment (32).

2. The lead frame inspection fixture according to claim 1, wherein the adjusting block (1) comprises a first fixed block (11), a second movable block (12), a third movable block (13) and a fourth movable block (14), the first fixed block (11), the second movable block (12), the third movable block (13) and the fourth movable block (14) have the same structure, the first fixed block (11), the second movable block (12), the third movable block (13) and the fourth movable block (14) are longitudinally arranged oppositely, and the first fixed block (11), the third movable block (13), the second movable block (12) and the fourth movable block (14) are transversely arranged oppositely.

3. The lead frame test fixture according to claim 2, wherein different longitudinal slide rails (22) are respectively arranged on one side of the first fixed block (11), the second movable block (12), the third movable block (13) and the fourth movable block (14) which are far away from each other in a penetrating manner, the two longitudinal slide rails (22) are arranged in parallel and extend out of the second movable block (12) and the fourth movable block (14), a longitudinal adjustment (31) is screwed on one side of the second movable block (12) which is far away from the first fixed block (11), a longitudinal adjustment (31) is screwed on one side of the fourth movable block (14) which is far away from the third movable block (13), and the longitudinal adjustment (31) is arranged in the same horizontal plane.

4. The lead frame test fixture according to claim 3, wherein different transverse sliding rails (21) are respectively arranged on one side of the first fixed block (11), the third movable block (13), the second movable block (12) and the fourth movable block (14) far away from each other in a penetrating manner, the two transverse sliding rails (21) are arranged in parallel and extend out of the third movable block (13) and the fourth movable block (14), a transverse adjustment (32) is screwed on one side of the third movable block (13) far away from the first fixed block (11), a transverse adjustment (32) is screwed on one side of the fourth movable block (14) far away from the second movable block (12), and the transverse adjustment (32) is in the same horizontal plane.

5. The lead frame inspection fixture according to claim 4, wherein the first fixed block (11), the second movable block (12), the third movable block (13) and the fourth movable block (14) are all provided with an introduction groove (15) downwards, the inner surface of the introduction groove (15) is provided with an inclined surface, and the depth of the introduction groove (15) is not more than one fifth of the depth of the accommodating groove.

6. The lead frame inspection jig as claimed in claim 5, wherein the bottom receiving plate (16) in the first fixed block (11), the second movable block (12), the third movable block (13) and the fourth movable block (14) is embedded with a supporting pad (161), and the upper surface of the supporting pad (161) and the upper surface of the receiving plate (16) are in the same horizontal plane.

7. The lead frame inspection jig according to claim 6, wherein sharp edges of the first fixed block (11), the second movable block (12), the third movable block (13) and the fourth movable block (14) are rounded.

8. The lead frame inspection jig according to claim 7, wherein the inner side walls of the first fixed block (11), the second movable block (12), the third movable block (13) and the fourth movable block (14) which are close to each other are provided with a scale strip (18) along the height direction, and the zero line of the scale strip (18) is flush with the upper surface of the bearing plate (16).