CN211331084U - Bending device capable of bending lead frame pins of various models - Google Patents
Bending device capable of bending lead frame pins of various models Download PDFInfo
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- CN211331084U CN211331084U CN201921643109.1U CN201921643109U CN211331084U CN 211331084 U CN211331084 U CN 211331084U CN 201921643109 U CN201921643109 U CN 201921643109U CN 211331084 U CN211331084 U CN 211331084U
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- lead frame
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Abstract
The utility model discloses a bending device capable of bending lead frame pins of various models, relating to the technical field of micro-electronics and solving the technical problems of bending and molding outer pins after plastic package of lead frames of different models is finished, comprising a supporting frame, the supporting frame comprises a horizontal bottom plate and two vertical plates arranged at the left side and the right side of the horizontal bottom plate, the two vertical plates are fixedly provided with horizontal top plates, the horizontal bottom plate is provided with a groove, a lower supporting component is arranged in the groove, the vertical plate is provided with a stamping assembly, the horizontal top plate is provided with a position adjusting assembly for adjusting the position of the stamping assembly, the position of the stamping assembly is adjusted through the position adjusting assembly, so that the width requirements of plastic package parts of lead frames of different models are met, and pins of the lead frames of different models are finally bent through the cooperation of the supporting assemblies.
Description
Technical Field
The utility model relates to a microelectronics technical field for the disinfection of beef jerky, concretely relates to bending device of lead frame pin of multiple model can bend.
Background
The lead frame is used as a chip carrier of an integrated circuit, is a key structural component for realizing the electrical connection between a circuit leading-out end inside a chip and an external lead by means of bonding materials (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, is an important basic material in the electronic information industry, and comprises TO, DIP, ZIP, SIP, SOP, SSOP, TSSOP, QFP (QFJ), SOD, SOT and the like. The production is mainly carried out by a die stamping method and a chemical etching method.
The lead frame comprises a small island, a fixing adhesive tape, a silver plating area, inner legs, connecting ribs, outer legs, a frame body and holes, wherein the small island is positioned in the center of the lead frame and used for fixing a chip, grounding and heat conduction, the fixing adhesive tape is used for ensuring that the inner legs are not deformed, the silver plating area is used for ensuring the weldability with gold threads, the inner legs are used for being connected with the chip, the connecting ribs are used for supporting a lead to prevent resin from flowing outwards, the outer legs are used for being connected with a printed substrate, the frame body is used for supporting the lead frame, the holes are used for preventing the resin from being stripped from the lead frame, and the outer legs are generally required to be bent and formed after the lead frame is subjected to plastic packaging.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the fashioned technical problem of outer foot bending after the lead frame plastic envelope of solving different models is accomplished, the utility model provides a bending device of lead frame pin of multiple model can bend.
The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:
a bending device capable of bending lead frame pins of various types comprises a supporting frame, wherein the supporting frame comprises a horizontal bottom plate and two vertical plates arranged on the left side and the right side of the horizontal bottom plate, horizontal top plates are fixedly arranged on the two vertical plates, a groove is formed in the horizontal bottom plate, a lower supporting assembly is arranged in the groove, a stamping assembly is arranged on each vertical plate, a position adjusting assembly used for adjusting the position of the stamping assembly is arranged on each horizontal top plate, each position adjusting assembly comprises a left driving rack and a right driving rack which are symmetrically arranged at the left end and the right end of the stamping assembly, the left driving rack and the right driving rack are both connected to the horizontal top plate through supporting rods, a driving gear is arranged on the right driving rack, a driven gear is arranged on the left driving rack, the driving gear is connected with the driven gear through a first rack, and the position adjusting assembly further comprises a motor fixed on the, the driving gear is sleeved on an output shaft of the motor, and teeth meshed with the left driving rack and the right driving rack are arranged at the contact position of the stamping assembly and the position adjusting assembly.
Further, the lower supporting assembly comprises a cylinder fixedly arranged in a groove, a stress plate is arranged on the output end of the cylinder and is in a circular truncated cone shape, the area of the groove is smaller than that of the top surface of the stress plate, and the area of the top surface of the stress plate is larger than that of the part of the lead frame for completing plastic package.
Further, stamping component includes left punching press piece and right punching press piece that bilateral symmetry set up both ends about supporting component down, the equal rigid coupling of one end that left side punching press piece and right punching press piece are close to vertical board has the connective bar, the connective bar runs through vertical board and wears out, that one of vertical board is worn out to the connective bar is served and is equipped with fastening component.
Further, fastening components is including setting up the latch segment at the tie-rod end, the latch segment is connected with the tie-rod through the internal thread that sets up at the terminal external surface of tie-rod and latch segment inner wall, the latch segment passes through the bolt and the nut fastening is on vertical board.
Furthermore, the contact part of the left stamping block and the right stamping block and the lead frame is provided with a buffer pad.
The utility model discloses the during operation: firstly, a lead frame with pins to be bent is placed on a stress plate of a supporting component, the distance between a left punching block and a right punching block of the punching component is adjusted according to the type of the lead frame to be bent, the adjusting process is as follows, firstly, a power supply of a motor is switched on, a rotating motor output shaft drives a driving gear sleeved on the motor output shaft to rotate, the rotating driving gear drives a rack gear to rotate, the rotating rack gear drives a punching gear to rotate, the rotating driving gear and a driven gear respectively drive a right driving rack and a left driving rack to move, the moving left driving rack and the moving right driving rack respectively drive the left punching block to left and the right driving block to right or the left punching block to right and the right driving block to left through teeth arranged on the top surfaces of the left punching block and the right punching block, so as to realize the adjustment of the distance between the left punching block and the right punching block, and opening the cylinder of the supporting assembly, driving the stress plate positioned on the cylinder to move upwards by the cylinder, driving the lead frame placed on the stress plate to move upwards by the stress plate moving upwards, and contacting the pins of the lead frame moving upwards with the punching assembly so as to realize the bending of the pins of the lead frame.
The utility model has the advantages as follows:
1. the utility model firstly puts the lead frame with the pin to be bent on the stress plate of the supporting component, and adjusts the distance between the left punching block and the right punching block of the punching component according to the type of the lead frame to be bent, the adjusting process is as follows, firstly, the power supply of the motor is switched on, the rotating motor output shaft drives the driving gear sleeved on the driving gear to rotate, the rotating driving gear drives the rack gear to rotate, the rotating rack gear drives the punching gear to rotate, the rotating driving gear and the driven gear respectively drive the right driving rack and the left driving rack to move, the moving left driving rack and the right driving rack respectively drive the left punching block to move leftwards and the right driving block to move rightwards or the left punching block to move rightwards and the right driving block to move leftwards through the teeth arranged on the top surfaces of the left punching block and the right punching block, thereby realizing the adjustment of the distance between the, after the adjustment is completed, the cylinder of the supporting assembly is opened, the cylinder drives the stress plate located on the cylinder to move upwards, the stress plate moving upwards drives the lead frame placed on the stress plate to move upwards, and the pins of the lead frame moving upwards are in contact with the stamping assembly, so that the pins of the lead frame are bent.
2. The utility model discloses under bracing subassembly is including setting firmly the cylinder in the recess, be equipped with the atress board on the output of cylinder, the atress board is the round platform type, the area of recess is less than the area of atress board top surface, the area of atress board top surface is greater than that some area that the plastic envelope was accomplished to the lead frame, and the motion through the cylinder drives the atress board upward movement, and the atress board of upward movement drives the lead frame upward movement for the pin and the punching press subassembly contact of lead frame finally realize bending to the lead frame pin, and the area of atress board top surface is greater than that some area that the plastic envelope was accomplished to the lead frame, can ensure the in-process of bending and do not damage the lead frame.
3. Stamping assembly includes that bilateral symmetry sets up left punching press piece and right punching press piece at support assembly left and right ends down, the equal rigid coupling of one end that left side punching press piece and right punching press piece are close to vertical board has the connective bar, the connective bar runs through vertical board and wears out, that one of vertical board is worn out to the connective bar is served and is equipped with fastening assembly, realizes bending to lead frame left side pin and right side pin through the cooperation of left punching press piece and right punching press piece, connects left punching press piece and right punching press piece and vertical board through the connective bar simultaneously, provides the passageway for the regulation of left punching press piece and right punching press piece.
4. Fastening components is including setting up the latch segment at the tie-rod end, the latch segment is connected through the internal thread and the tie-rod that set up at the terminal surface of tie-rod and latch segment inner wall, the latch segment passes through the bolt and the nut fastening is on vertical board, can effectively prevent dropping of left punching press piece and right punching press piece through the setting of latch segment, be equipped with the blotter with lead frame contact department on left side punching press piece and the right punching press piece, set up the blotter through contacting department with the lead frame on left punching press piece and right punching press piece, can effectively prevent to damage the lead frame after the plastic envelope in the stamping process.
5. Position control assembly sets up left drive rack and right drive rack at both ends about punching press subassembly including the symmetry, left side drive rack and right drive rack all connect on horizontal roof through the brace rod, be equipped with drive gear on the drive rack of the right side, be equipped with driven gear on the drive rack of a left side, drive gear and driven gear pass through a rack and connect, position control assembly is still including fixing the motor on horizontal roof, the drive gear cover is established on the output shaft of motor, punching press subassembly and position control assembly contact department are equipped with the tooth of left drive rack, right drive rack meshing, through the meshing of left drive rack and right drive rack of position control assembly and the tooth of left punching press piece and right punching press piece upper surface, realize the regulation to left punching press piece and right punching press piece position.
Drawings
Fig. 1 is a schematic structural view of a bending apparatus capable of bending lead frame pins of various types according to the present invention;
FIG. 2 is a schematic structural view of the stamping process of the present invention;
FIG. 3 is an enlarged view of part A of the present invention;
reference numerals: 1-horizontal bottom plate, 2-vertical plate, 3-locking block, 4-connecting rod, 5-nut, 6-supporting rod, 7-left driving rack, 8-tooth, 9-left punching block, 10-driven gear, 11-rack I, 12-driving gear, 13-motor, 14-right driving rack, 15-right punching block, 16-buffer pad, 17-stress plate and 18-cylinder.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "up", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
Example 1
As shown in figures 1-3, the bending device capable of bending lead frame pins of various types comprises a supporting frame, wherein the supporting frame comprises a horizontal bottom plate 1 and two vertical plates 2 arranged on the left side and the right side of the horizontal bottom plate 1, a horizontal top plate is fixedly arranged on the two vertical plates 2, a groove is arranged on the horizontal bottom plate 1, a lower supporting assembly is arranged in the groove, a stamping assembly is arranged on the vertical plate 2, a position adjusting assembly for adjusting the position of the stamping assembly is arranged on the horizontal top plate, the position adjusting assembly comprises a left driving rack and a right driving rack which are symmetrically arranged on the left end and the right end of the stamping assembly, the left driving rack and the right driving rack are both connected to the horizontal top plate through a supporting rod, a driving gear is arranged on the right rack, a driven gear is arranged on the left driving rack, and the driving gear and the driven gear are connected through a rack, the position adjusting assembly further comprises a motor fixed on the horizontal top plate, the driving gear is sleeved on an output shaft of the motor, and teeth meshed with the left driving rack and the right driving rack are arranged at the contact position of the stamping assembly and the position adjusting assembly.
In the embodiment, firstly, a lead frame with pins to be bent is placed on a stress plate 17 of a supporting assembly, the distance between a left punching block 9 and a right punching block 15 of the punching assembly is adjusted according to the type of the lead frame to be bent, the adjustment process is as follows, firstly, a power supply of a motor 13 is switched on, an output shaft of the rotating motor 13 drives a driving gear 12 sleeved on the driving gear to rotate, the rotating driving gear 12 drives a rack I11 to rotate, the rotating rack I11 drives a punching gear to rotate, the rotating driving gear 12 and a driven gear 10 respectively drive a right driving rack 14 and a left driving rack 7 to move, the moving left driving rack 7 and a right driving rack 14 respectively drive the left punching block 9 to the left and the right driving block or the left punching block 9 to the right and the right driving block to the left through teeth arranged on the top surfaces of the left punching block 9 and the right punching block 15, so as to realize the adjustment of the distance between the left punching block 9, after the adjustment is completed, the cylinder 18 of the supporting assembly is opened, the cylinder 18 drives the stress plate 17 positioned on the cylinder to move upwards, the stress plate 17 moving upwards drives the lead frame placed on the lead frame to move upwards, the pin of the lead frame moving upwards is contacted with the stamping assembly, so that the pin of the lead frame is bent, the position adjusting assembly comprises a left driving rack 7 and a right driving rack 14 which are symmetrically arranged at the left end and the right end of the stamping assembly, the left driving rack 7 and the right driving rack 14 are both connected to a horizontal top plate through a supporting rod 6, a driving gear 12 is arranged on the right driving rack 14, a driven gear 10 is arranged on the left driving rack 7, the driving gear 12 is connected with the driven gear 10 through a rack I11, the position adjusting assembly further comprises a motor 13 fixed on the horizontal top plate, and the driving gear 12 is sleeved on an output shaft of the motor 13, the contact part of the stamping assembly and the position adjusting assembly is provided with teeth 8 meshed with the left driving rack 7 and the right driving rack 14, and the positions of the left stamping block 9 and the right stamping block 15 can be adjusted by meshing the left driving rack 7 and the right driving rack 14 of the position adjusting assembly with the teeth 8 on the upper surfaces of the left stamping block 9 and the right stamping block 15
Example 2
As shown in fig. 1-3, in this embodiment, a further improvement is made on the basis of embodiment 1, the lower support assembly includes a cylinder 18 fixedly disposed in a groove, an output end of the cylinder 18 is provided with a stress plate 17, the stress plate 17 is in a circular truncated cone shape, an area of the groove is smaller than an area of a top surface of the stress plate 17, and an area of the top surface of the stress plate 17 is larger than an area of a portion of the lead frame that is subjected to plastic encapsulation.
In this embodiment, the lower supporting component includes the cylinder 18 that sets firmly in the recess, be equipped with the atress board 17 on the output of cylinder 18, atress board 17 is the round platform type, the area of recess is less than the area of atress board 17 top surface, the area of atress board 17 top surface is greater than the area that the lead frame accomplished that part of plastic envelope, and the motion through cylinder 18 drives atress board 17 upward movement, and upward movement's atress board 17 drives the lead frame upward movement for the pin of lead frame and the contact of punching press subassembly finally realize bending to the lead frame pin, and the area of atress board 17 top surface is greater than the area that the lead frame accomplished that the plastic envelope, can ensure the in-process of bending and do not damage the lead frame.
Example 3
As shown in fig. 1-3, this embodiment is further improved on the basis of embodiment 1, the stamping assembly includes left and right stamping blocks 9 and 15 which are symmetrically arranged at the left and right ends of the lower supporting assembly, a connecting rod 4 is fixedly connected to one ends of the left and right stamping blocks 9 and 15 close to the vertical plate 2, the connecting rod 4 penetrates through the vertical plate 2 and penetrates out, and a fastening assembly is arranged at one end of the connecting rod 4 penetrating out of the vertical plate 2.
In this embodiment, the left punching press piece 9 and the right punching press piece 15 at both ends are controlled to the punching press subassembly including bilateral symmetry setting supporting component down, the equal rigid coupling of one end that left side punching press piece 9 and right punching press piece 15 are close to vertical board 2 has connective bar 4, connective bar 4 runs through vertical board 2 and wears out, that one end that vertical board 2 was worn out to connective bar 4 is served and is equipped with fastening components, realizes bending to lead frame left side pin and right side pin through the cooperation of left punching press piece 9 and right punching press piece 15, is connected left punching press piece 9 and right punching press piece 15 and vertical board 2 through connective bar 4 simultaneously, provides the passageway for the regulation of left punching press piece 9 and right punching press piece 15.
Example 4
As shown in fig. 1-3, this embodiment is further improved on the basis of embodiment 1, the fastening assembly includes a locking block 3 disposed at the end of the connecting rod 4, the locking block 3 is connected to the connecting rod 4 through an external thread disposed on the outer surface of the end of the connecting rod 4 and an internal thread disposed on the inner wall of the locking block 3, the locking block 3 is fastened to the vertical plate 2 through a bolt and a nut 5, the left punch block 9 and the right punch block 15 can be effectively prevented from dropping through the arrangement of the locking block 3, and a buffer 16 is disposed at the contact position of the left punch block 9 and the right punch block 15 with the lead frame.
Preferably, the left punching block 9 and the right punching block 15 are provided with buffering pads 16 at the positions contacting with the lead frame, and the buffering pads 16 are arranged at the positions contacting with the lead frame on the left punching block 9 and the right punching block 15, so that the lead frame after being molded can be effectively prevented from being damaged in the punching process.
Claims (5)
1. A bending device capable of bending lead frame pins of various models comprises a supporting frame and is characterized in that the supporting frame comprises a horizontal bottom plate (1) and two vertical plates (2) arranged on the left side and the right side of the horizontal bottom plate (1), horizontal top plates are fixedly arranged on the two vertical plates (2), a groove is formed in the horizontal bottom plate (1), a lower supporting assembly is arranged in the groove, a stamping assembly is arranged on the vertical plates (2), a position adjusting assembly used for adjusting the position of the stamping assembly is arranged on the horizontal top plate, the position adjusting assembly comprises a left driving rack (7) and a right driving rack (14) which are symmetrically arranged on the left end and the right end of the stamping assembly, the left driving rack (7) and the right driving rack (14) are connected to the horizontal top plate through a supporting rod (6), and a driving gear (12) is arranged on the right driving rack (14), be equipped with driven gear (10) on left side drive rack (7), drive gear (12) and driven gear (10) are connected through rack (11), position adjusting component is still including fixing motor (13) on horizontal roof, drive gear (12) cover is established on the output shaft of motor (13), punching press subassembly and position adjusting component contact department are equipped with and left side drive rack (7), right side drive rack (14) meshing tooth (8).
2. The bending device capable of bending the lead frames of various types according to claim 1, wherein the lower support assembly comprises an air cylinder (18) fixedly arranged in a groove, the output end of the air cylinder (18) is provided with a stress plate (17), the stress plate (17) is in a circular truncated cone shape, the area of the groove is smaller than that of the top surface of the stress plate (17), and the area of the top surface of the stress plate (17) is larger than that of the part of the lead frame which is subjected to plastic packaging.
3. The bending device capable of bending the lead frame pins of various types according to claim 1, wherein the stamping assembly comprises a left stamping block (9) and a right stamping block (15) which are arranged at the left end and the right end of the lower supporting assembly in a bilateral symmetry manner, one ends, close to the vertical plate (2), of the left stamping block (9) and the right stamping block (15) are fixedly connected with connecting rods (4), the connecting rods (4) penetrate through the vertical plate (2) and penetrate out, and fastening assemblies are arranged at the ends, penetrating out of the vertical plate (2), of the connecting rods (4).
4. The bending device capable of bending lead frame pins of various types according to claim 3, wherein the fastening assembly comprises a locking block (3) arranged at the tail end of the connecting rod (4), the locking block (3) is connected with the connecting rod (4) through an external thread arranged on the outer surface of the tail end of the connecting rod (4) and an internal thread arranged on the inner wall of the locking block (3), and the locking block (3) is fastened on the vertical plate (2) through a bolt and a nut (5).
5. The bending device capable of bending lead frame pins of various types according to any one of claims 3-4, wherein the left punch block (9) and the right punch block (15) are provided with buffer pads (16) at the contact positions with the lead frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921643109.1U CN211331084U (en) | 2019-09-29 | 2019-09-29 | Bending device capable of bending lead frame pins of various models |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921643109.1U CN211331084U (en) | 2019-09-29 | 2019-09-29 | Bending device capable of bending lead frame pins of various models |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211331084U true CN211331084U (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921643109.1U Active CN211331084U (en) | 2019-09-29 | 2019-09-29 | Bending device capable of bending lead frame pins of various models |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211331084U (en) |
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2019
- 2019-09-29 CN CN201921643109.1U patent/CN211331084U/en active Active
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