CN215786296U - Primary positioning device for lead frame stamping die - Google Patents
Primary positioning device for lead frame stamping die Download PDFInfo
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- CN215786296U CN215786296U CN202122243852.1U CN202122243852U CN215786296U CN 215786296 U CN215786296 U CN 215786296U CN 202122243852 U CN202122243852 U CN 202122243852U CN 215786296 U CN215786296 U CN 215786296U
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Abstract
The utility model relates to the technical field of integrated circuit leads and lead frames, in particular to a primary positioning device of a lead frame stamping die, which aims to overcome the defects that the primary positioning device in the prior art is large in limitation and cannot be adjusted, and is mainly realized by the following technical scheme: the utility model provides a lead frame stamping die primary positioning device, includes: the base, gag lever post and guide bar, the top location rotates in the base has many gag lever posts and the bottom location rotates has many guide bars, the gag lever post sets up with the guide bar is crisscross, the gag lever post is equipped with three, the gag lever post both ends all are equipped with the adjustment and tie, gag lever post and guide bar axis direction all are perpendicular with the pay-off direction, the guide bar is equipped with two, the guide bar shape is corresponding with heterotypic copper strips recess shape, gag lever post and guide bar cooperation base form the primary positioning device before stamping die, at punching press pay-off in-process, the gag lever post is controlled along with heterotypic copper strips and is removed, position error about the reduction, promote punching press product quality.
Description
Technical Field
The utility model relates to the technical field of integrated circuit leads and lead frames, in particular to a primary positioning device for a lead frame stamping die.
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 lead-out end of an internal circuit of a chip and an external lead by means of a bonding material 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.
The lead frame is mostly made of flat copper strips in a stamping mode, but in order to meet market demands, deformation of the lead frame due to stress release is reduced, and the special-shaped copper strips are produced at the same time. The special-shaped copper strip comprises but is not limited to a T shape, a U shape and an M shape, so that the production and manufacturing requirements of different lead frame products can be met. In the prior art, most lead frame strips are directly stamped after being fed, only guide pins or other positioning devices between a stamping device and a stamping die are used for positioning, and initial positioning is not performed before a stamping process, so that stamping deviation is easily caused; meanwhile, the feeding die for initial feeding positioning is only suitable for flat copper strips and cannot be suitable for different special-shaped copper strips, and the initial positioning die cannot be adjusted according to the feeding stamping condition after being installed, so that front and rear elevation angles and left and right position errors of the die can be generated in the stamping process, and the production quality is influenced.
Aiming at the problems, a primary positioning device is required to be added in front of a high-speed punch press, so that the problem of stamping deviation is solved, and in the moving process of the punch press, the primary positioning device can automatically adjust the left and right positions, so that feeding and stamping are facilitated, and the production quality of products is improved.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem to be solved by the present invention is to overcome the defects that the primary positioning device in the prior art has large limitation and cannot be adjusted, so as to provide a primary positioning device for a lead frame stamping die.
The technical purpose of the utility model is realized by the following technical scheme:
the utility model provides a lead frame stamping die primary positioning device, includes:
the top end of the base is positioned and rotated to form a plurality of limiting rods, the bottom of the base is positioned and rotated to form a plurality of guide rods, the projections of the limiting rods on the horizontal plane and the projections of the guide rods on the horizontal plane are arranged in a staggered mode, one side of the bottom of the base vertically extends to form an extension plate, the extension plate is attached to a mold, and a plurality of bolts are arranged on the extension plate in a penetrating mode to be fixed with the mold;
the device comprises three limiting rods, a base and a positioning device, wherein the three limiting rods are arranged in an array along the length direction of the base, adjusting bolts are arranged at two ends of each limiting rod, and the axis direction of each limiting rod is perpendicular to the feeding direction;
the guide rods are arranged in an array mode along the length direction of the base, the axis direction of each guide rod is perpendicular to the feeding direction, and the shape of each guide rod corresponds to that of the special-shaped copper strip groove.
By adopting the technical scheme, the limiting rod and the guide rod are matched with the base, so that a primary positioning device in front of a stamping die is formed, and stamping deviation is reduced; in the stamping and feeding process, the limiting rod moves left and right along with the special-shaped copper strip and is adjusted in real time according to the stamping condition, so that left and right position errors are reduced, and the quality of a stamped product is improved.
Further, the base is including deciding board, curb plate and adjusting plate, curb plate symmetry and vertical fixation are in deciding the board both sides, curb plate and pay-off direction parallel arrangement, adjusting plate and curb plate parallel arrangement and adjusting plate bottom slide with deciding the board and be connected, the both ends of deciding board top surface symmetry are equipped with the track of sliding and supply the adjusting plate to slide, the track of sliding sets up along deciding board width direction.
By adopting the technical scheme, the base is fixed with the punch through the extension plate, so that the base is convenient to disassemble; the adjusting plate is connected with the fixed plate in a sliding mode, so that the limiting rod can move left and right to adjust the position conveniently along with the stamping process, the sliding track limits the movement track of the adjusting plate, the movement of unnecessary degrees of freedom is reduced, and the generation of front and rear elevation errors is avoided.
Furthermore, a screw micrometer is further arranged in the center of one side of the side plate, the adjusting bolt penetrates through the side plate to be connected with the limiting rod, a buffer spring is further sleeved on the adjusting bolt, one end of the buffer spring is abutted to the side plate, and the other end of the buffer spring is abutted to the adjusting plate.
By adopting the technical scheme, the spiral micrometer adjusts the distance between the two adjusting plates, so that the special-shaped copper strips with different widths are adapted, and the adaptation practicability of the primary positioning device is improved; the buffer spring is additionally arranged to reduce vibration in the movement process and buffer the rigid impact of left and right displacement.
Furthermore, still the cover is equipped with a plurality of antifriction bearings on the gag lever post, antifriction bearing sets up along gag lever post length direction, two of both sides antifriction bearing's interval length is not more than the width of abnormal shape copper strips, the antifriction bearing side all is equipped with the circular arc chamfer.
By adopting the technical scheme, the rolling bearing is arranged to tightly abut against the upper surface of the special-shaped copper strip, and the special-shaped copper strip drives the rolling bearing to rotate in a transmission manner when in use, so that the special-shaped copper strip is controlled to move, and the left and right position errors are reduced; the rolling bearing with the arc chamfer reduces friction with the special-shaped copper strip, and ensures the surface smoothness of the special-shaped copper strip.
Furthermore, a special-shaped copper strip penetrates through the space between the limiting rod and the guide rod, guide rings are symmetrically fixed on the guide rod, and the guide rings correspond to the grooves of the special-shaped copper strip.
By adopting the technical scheme, the limiting rod and the guide rod are used for forming the external shape of the special-shaped copper strip, so that feeding is matched, stability before stamping is guaranteed, and the purpose of primary positioning is realized.
Furthermore, the guide rings are symmetrically fixed at two ends of the guide rod, and the guide rings and the guide rod form an I shape.
Through adopting above-mentioned technical scheme, I shape guide ring and guide bar constitute T area shape for realize that T area carries punching press and T area primary positioning.
Furthermore, the guide rings are fixed on two sides of the guide rod, the length of each guide ring is centrosymmetric, the distance between the two guide rings is smaller than the thickness of each guide ring, and a gasket is further arranged between the guide rings.
Through adopting above-mentioned technical scheme, guide ring and guide bar constitute U area shape for realize that the U area carries the punching press and the U area is just fixed a position, the gasket is used for the U area middle section to finely tune.
Furthermore, the guide rings are symmetrically fixed on the guide rod, the guide rings are arranged at intervals, and the distance between the two guide rings is larger than the thickness of a single guide ring.
Through adopting above-mentioned technical scheme, shape M area shape is taken to guide ring and guide bar constitution for realize that M area carries punching press and M area initial positioning, antifriction bearing and M area butt avoid the middle part to beat.
In summary, the technical scheme of the utility model has the following advantages:
1. according to the primary positioning device for the lead frame stamping die, the limiting rod and the guide rod are matched with the base, so that the primary positioning device in front of the stamping die is formed, and stamping deviation is reduced; in the stamping and feeding process, the limiting rod moves left and right along with the special-shaped copper strip and is adjusted in real time according to the stamping condition, so that left and right position errors are reduced, and the quality of a stamped product is improved.
2. The primary positioning device of the lead frame stamping die provided by the utility model is matched with different special-shaped copper strips to use the rolling bearings and the guide rings at different positions, so that the adaptability of the primary positioning device is improved.
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 primary positioning device of a lead frame stamping die according to an embodiment of the present invention;
FIG. 2 is a schematic view of a partial structure of a base according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a limiting rod and a guiding rod according to a first embodiment of the present invention
FIG. 4 is a schematic cross-sectional view of a stop lever and a guide lever according to a second embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of a limiting rod and a guide rod according to a third embodiment of the utility model.
Description of reference numerals:
1. a base; 11. an extension plate; 111. a bolt; 12. fixing a plate; 121. a sliding track; 13. a side plate; 131. a micrometer screw; 14. an adjustment plate; 2. a limiting rod; 21. a rolling bearing; 211. adjusting the bolt; 212. a buffer spring; 3. a guide bar; 31. a guide ring; 32. and (7) a gasket.
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.
Example 1
The utility model provides a lead frame stamping die primary positioning device, as shown in fig. 1 and fig. 2, including base 1, gag lever post 2 and guide bar 3, the top location rotates in the base 1 and has many gag lever posts 2, the bottom location rotates in the base 1 has many guide bars 3, and the projection of gag lever post 2 on the horizontal plane sets up with the projection of guide bar 3 on the horizontal plane is crisscross, and the vertical extension in base 1 bottom one side has extension board 11, and extension board 11 is worn to be equipped with a plurality of bolts 111 and mould fixedly with the mould laminating setting on just extending board 11. The limiting rod 2 is provided with three along base 1 length direction array, and guide bar 3 is provided with two along base 1 length direction array, and limiting rod 2 and 3 axis directions of guide bar are all perpendicular with the pay-off direction, and 3 shapes of guide bar are corresponding with heterotypic copper strips groove shape. The limiting rod 2 and the guide rod 3 are matched with the base 1, so that a primary positioning device in front of a stamping die is formed, and stamping deviation is reduced; in the stamping and feeding process, the limiting rod 2 moves left and right along with the special-shaped copper strip and is adjusted in real time according to the stamping condition, so that left and right position errors are reduced, and the quality of a stamped product is improved.
As shown in fig. 1 and 2, the base 1 includes a fixed plate 12, side plates 13 and adjusting plates 14, the side plates 13 are symmetrically and vertically fixed on two sides of the fixed plate 12, the side plates 13 are arranged in parallel with the feeding direction, the adjusting plates 14 are arranged in parallel with the side plates 13, the bottoms of the adjusting plates 14 are connected with the fixed plate 12 in a sliding manner, two ends of the top surface of the fixed plate 12, which are symmetrical in the front and back direction, are provided with transverse sliding rails 121 for the adjusting plates 14 to slide, the sliding rails 121 are arranged along the width direction of the fixed plate 12, and the base 1 is fixed with a punch through an extending plate 11, so that the base is convenient to disassemble; the adjusting plate 14 is connected with the fixed plate 12 in a sliding mode, so that the limiting rod 2 moves left and right along with the stamping process to adjust the position, the sliding track 121 limits the motion track of the adjusting plate 14, unnecessary degree of freedom movement is reduced, and front and back elevation errors are avoided. The screw micrometer 131 is further arranged in the center of the left side of the side plate 13, the adjusting bolt 211 penetrates through the side plate 13 to be connected with the limiting rod 2, the buffering spring 212 is further sleeved on the adjusting bolt 211, one end of the buffering spring 212 abuts against the side plate 13, the other end of the buffering spring 212 abuts against the adjusting plate 14, and the screw micrometer 131 adjusts the distance between the two adjusting plates 14, so that the special-shaped copper strips with different widths are adapted, and the adaptation practicability of the primary positioning device is improved; the buffer spring 212 is additionally arranged to reduce vibration in the movement process and buffer the rigid impact of left and right displacement.
As shown in fig. 3, three rolling bearings 21 are sleeved on the limiting rod 2, the interval length between the two rolling bearings 21 on the left side and the right side is smaller than or equal to the width of the special-shaped copper strip, arc chamfers are arranged on the side edges of the rolling bearings 21, the special-shaped copper strip penetrates through the limiting rod 2 and the guide rod 3, guide rings 31 are symmetrically fixed on the guide rod 3, the guide rings 31 correspond to the grooves of the special-shaped copper strip, the guide rings 31 are symmetrically fixed at the two ends of the guide rod 3, the guide rings 31 and the guide rod 3 form an i-shaped structure, and the i-shaped guide rings 31 and the guide rod 3 form a T-shaped belt for realizing the T-belt conveying and stamping and the T-belt initial positioning.
Example 2
A primary positioning device of a lead frame stamping die is shown in figure 5, and is different from embodiment 1 in the position of guide rings 31, in the embodiment, the guide rings 31 are fixed on two sides of a guide rod 3 with central symmetry of length, the distance between the two guide rings 31 is smaller than the thickness of a single guide ring 31, a gasket 32 is further arranged between the guide rings 31, the guide rings 31 and the guide rod 3 form a U-shaped belt shape for realizing U-shaped belt conveying stamping and primary positioning of the U-shaped belt, and the gasket 32 is used for fine adjustment of the middle section of the U-shaped belt.
Example 3
The utility model provides a lead frame stamping die preliminary positioning device, as shown in fig. 5, the difference with embodiment 1 lies in the guide ring 31 position, in this embodiment, guide ring 31 symmetry is fixed on guide bar 3, guide ring 31 interval sets up and the distance is greater than single guide ring 31 thickness between two guide rings 31, the cover is equipped with antifriction bearing 21 on the gag lever post 2, antifriction bearing 21 bottom and heterotypic copper strips up end keep flat and rotate along with M area motion, guide ring 31 and guide bar 3 constitute M area shape, be used for realizing M area transport punching press and M area preliminary positioning, antifriction bearing 21 and M area butt, avoid heterotypic copper strips middle part to beat.
The working principle and the use method of the primary positioning device of the lead frame stamping die are as follows: before the device is used, different guide rods 3 are selected according to the shape of the special-shaped copper strip, then the distance between rolling bearings 21 is adjusted to adapt to the width of the special-shaped copper strip, the rolling bearings are screwed through adjusting bolts 211, then the distance between two adjusting plates 14 is finely adjusted through a micrometer screw 131, and finally the whole device is fixed on a punching machine through an extending plate 11.
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 (8)
1. The utility model provides a lead frame stamping die primary positioning device which characterized in that includes:
the base comprises a base (1), wherein a plurality of limiting rods (2) are positioned and rotated at the top end in the base (1), a plurality of guide rods (3) are positioned and rotated at the bottom in the base (1), the projections of the limiting rods (2) on the horizontal plane and the projections of the guide rods (3) on the horizontal plane are arranged in a staggered manner, an extension plate (11) vertically extends from one side of the bottom of the base (1), the extension plate (11) is arranged in a fit manner with a mold, and a plurality of bolts (111) are arranged on the extension plate (11) in a penetrating manner to be fixed with the mold;
the device comprises three limiting rods (2), the three limiting rods (2) are arranged in an array along the length direction of a base (1), adjusting bolts (211) are arranged at two ends of each limiting rod (2), and the axial direction of each limiting rod (2) is perpendicular to the feeding direction;
the guide rod (3), guide rod (3) are provided with two along base (1) length direction array, guide rod (3) axis direction is perpendicular with the pay-off direction, guide rod (3) shape and heterotypic copper strips recess shape are corresponding.
2. The primary positioning device of the lead frame stamping die as claimed in claim 1, wherein the base (1) includes a fixed plate (12), side plates (13) and adjusting plates (14), the side plates (13) are symmetrically and vertically fixed on two sides of the fixed plate (12), the side plates (13) are arranged in parallel with the feeding direction, the adjusting plates (14) are arranged in parallel with the side plates (13) and the bottoms of the adjusting plates (14) are connected with the fixed plate (12) in a sliding manner, sliding rails (121) are arranged at two symmetrical ends of the top surface of the fixed plate (12) for the adjusting plates (14) to slide, and the sliding rails (121) are arranged along the width direction of the fixed plate (12).
3. The primary positioning device of the lead frame stamping die as claimed in claim 2, wherein a micrometer screw (131) is further disposed in the center of one side of the side plate (13), the adjusting bolt (211) penetrates through the side plate (13) to be connected with the limiting rod (2), a buffer spring (212) is further sleeved on the adjusting bolt (211), one end of the buffer spring (212) abuts against the side plate (13), and the other end of the buffer spring (212) abuts against the adjusting plate (14).
4. The primary positioning device of the lead frame stamping die as claimed in claim 3, wherein the limiting rod (2) is further sleeved with a plurality of rolling bearings (21), the rolling bearings (21) are arranged along the length direction of the limiting rod (2), the interval length of two rolling bearings (21) on two sides is not greater than the width of the special-shaped copper strip, and the side edges of the rolling bearings (21) are provided with arc chamfers.
5. The primary positioning device of the lead frame stamping die as claimed in claim 4, wherein a profiled copper strip passes through between the limiting rod (2) and the guide rod (3), guide rings (31) are symmetrically fixed on the guide rod (3), and the guide rings (31) correspond to the grooves of the profiled copper strip.
6. The primary positioning device of the lead frame stamping die as claimed in claim 5, wherein the guide rings (31) are symmetrically fixed at two ends of the guide rod (3), and the guide rings (31) and the guide rod (3) form an I shape.
7. The primary positioning device of the lead frame stamping die is characterized in that the guide rings (31) are fixed on two sides of the guide rod (3) with central symmetry of the length, the distance between the two guide rings (31) is smaller than the thickness of the single guide ring (31), and a gasket (32) is arranged between the guide rings (31).
8. The primary positioning device of the lead frame stamping die as claimed in claim 5, wherein the guide rings (31) are symmetrically fixed on the guide rod (3), the guide rings (31) are arranged at intervals, and the distance between two guide rings (31) is larger than the thickness of a single guide ring (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122243852.1U CN215786296U (en) | 2021-09-16 | 2021-09-16 | Primary positioning device for lead frame stamping die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122243852.1U CN215786296U (en) | 2021-09-16 | 2021-09-16 | Primary positioning device for lead frame stamping die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215786296U true CN215786296U (en) | 2022-02-11 |
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ID=80161120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122243852.1U Active CN215786296U (en) | 2021-09-16 | 2021-09-16 | Primary positioning device for lead frame stamping die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215786296U (en) |
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2021
- 2021-09-16 CN CN202122243852.1U patent/CN215786296U/en active Active
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