CN219216738U

CN219216738U - Clamping and transferring mechanism for integrated circuit lead frame

Info

Publication number: CN219216738U
Application number: CN202223531075.1U
Authority: CN
Inventors: 苏骞; 孟敏
Original assignee: Dongguan Allmerit Technology Co Ltd
Current assignee: Dongguan Allmerit Technology Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-20
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to the technical field of clamping of integrated circuit lead frames, in particular to a clamping and transferring mechanism of an integrated circuit lead frame, which comprises a material grabbing base plate, wherein a material clamping base plate is arranged at the top of the material grabbing base plate, limiting blocks which are in positioning contact with the edges of the board are respectively and longitudinally arranged at two sides of the material clamping base plate, a material clamping piece is further arranged on the material clamping base plate, the material clamping piece comprises a material clamping plate and material clamping fingers which are longitudinally arranged on the material clamping plate at intervals, and each material clamping finger is provided with a clamping jaw block for supporting the lead frame; the clamping bottom plate longitudinally moves to be close to the lead frame needing clamping, after two side plates of the lead frame are just clamped by the limiting blocks, the two clamping plates are continuously close to each other, so that clamping jaw blocks at the end parts of clamping fingers are propped against the bottom plate edges of the lead frame, the plate edges of the lead frame are supported, the clamping force received by the two side edges of the lead frame during clamping is small, deformation and bending cannot occur, the lead frame can be effectively protected, and damage is reduced.

Description

Clamping and transferring mechanism for integrated circuit lead frame

Technical Field

The utility model relates to the technical field of clamping of integrated circuit lead frames, in particular to a clamping and transferring mechanism of an integrated circuit lead frame.

Background

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

Continuous plating is primarily applicable to some continuous ribbon webs or wires, such as the integrated circuit lead frames described above. The continuous plating is required to be subjected to pretreatment and electroplating processes, wherein the pretreatment processes comprise degreasing, activating, washing and the like, the electroplating processes comprise copper plating, nickel plating, gold plating, tin plating and the like, and the post-treatment processes generally comprise hole sealing, dyeing and the like.

In the electroplating process, the lead frame needs to be fed and discharged, and the utility model of China with the patent number of CN202221583410.X discloses a lead frame welding plate clamp, which comprises: and the mounting plate and the clamping assembly. The clamping assembly quantity is two at least groups, locate the mounting panel along the length direction of mounting panel, the clamping assembly all includes two side bars, the side bar is located mounting panel width direction's both sides respectively, the counter bore has all been seted up to one side of side bar's hypomere towards the mounting panel, the counter bore internal rotation is equipped with the trough plate, the axis of rotation of trough plate is parallel with the length direction of mounting panel, one side of trough plate towards the mounting panel has rectangular channel, rectangular channel's extending direction is parallel with the axis of rotation of trough plate, rectangular channel internal rotation is equipped with the cardboard, the axis of rotation perpendicular to rectangular channel's of cardboard lateral wall.

In the scheme, the clamping plates are mutually close to or far away from the lead frame to clamp the lead frame, the deformation preventing capability of some electroplated lead frames is more common, and when clamping is carried out, the phenomenon of bending can occur, so that the performance after electroplating is reduced, and the phenomenon of damage can possibly occur.

Disclosure of Invention

The utility model aims to provide a clamping and transferring mechanism of an integrated circuit lead frame, which aims to overcome the defects in the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the clamping and transferring mechanism of the integrated circuit lead frame comprises a grabbing base plate, a clamping base plate capable of longitudinally moving is arranged at the top of the grabbing base plate, limiting blocks for positioning and contacting edges of the lead frame are respectively and longitudinally arranged at two sides of the clamping base plate, clamping pieces capable of clamping the lead frame in an opening-closing mode are further arranged on the clamping base plate, each clamping piece comprises a clamping plate arranged along the length direction of the clamping base plate and clamping fingers longitudinally arranged on the clamping plate at intervals, and each clamping finger is provided with a clamping jaw block for contacting with the bottom surface of the lead frame and supporting the lead frame.

Further: the clamping piece further comprises a bidirectional driving piece for driving the two clamping plates to be close to or far away from each other in the width direction of the clamping bottom plate.

Further: the bidirectional driving piece comprises an air cylinder mounting seat arranged at the top of the clamping bottom plate, two short-stroke air cylinders with the same movement stroke are arranged on the air cylinder mounting seat, and piston rods of the two short-stroke air cylinders are oppositely arranged and respectively connected with the clamping plate.

Further: more than two linear guide rails are arranged on the clamping bottom plate along the width direction, and a linear sliding seat in sliding fit with the linear guide rails is arranged on the clamping bottom plate.

Further: the inside wall of stopper is connected with the lateral wall of grabbing material backing plate and pressing from both sides material bottom plate respectively, and the inside wall bottom of stopper still shaping has the L type groove with lead frame's board side contact.

Further: the bottom of the limiting block is also provided with a flaring slot communicated with the L-shaped slot.

Further: : and each clamping plate is provided with at least two clamping fingers, and the top of the inner side wall of each clamping finger is connected with the outer side wall of each clamping plate in a height-adjustable manner.

Further: the outside shaping of clamp flitch has first connecting hole, presss from both sides the material finger shaping have with first connecting hole complex second connecting slot hole.

Further: the clamping jaw block top shaping has the holding surface with lead frame bottom surface board limit supporting contact, clamping jaw block lateral wall shaping has the mounting groove that supplies the clamp material finger to insert, and the mounting groove shaping has first mounting hole, and the clamp material finger shaping has the second mounting hole with the coaxial alignment of first mounting hole.

Further: the material grabbing base plate is provided with a detection groove, the material clamping base plate is provided with an induction column capable of longitudinally moving under stress, and the top of the material clamping base plate is provided with a sensor in inductive fit with the induction column.

The utility model has the beneficial effects that: the clamping bottom plate longitudinally moves to be close to the lead frame to be clamped, two side plates of the lead frame are just clamped by the limiting blocks, then the clamping piece works, the two clamping plates are continuously close to each other, so that clamping jaw blocks at the end parts of clamping fingers prop against the bottom plate edges of the lead frame, the plate edges of the lead frame are supported, the lead frame is prevented from falling from the position between the limiting blocks, and clamping is realized; when the lead frame is clamped, the lead frame cannot fall down, clamping force received by two sides of the lead frame during clamping is small, deformation and bending cannot occur, the lead frame can be effectively protected, and damage is reduced.

Drawings

Fig. 1 is a schematic structural view of a clamp transfer mechanism.

Fig. 2 is a schematic diagram of an axial structure of the clamp transfer mechanism in a plan view.

Fig. 3 is a schematic view of a partial enlarged structure of fig. 2.

The reference numerals include:

1-a material grabbing backing plate,

11-clamping bottom plate, 12-limiting block, 13-L-shaped groove, 14-flaring groove, 15-detecting groove,

16-sliding hole, 17-sensing column, 18-sensor,

2-clamping piece,

21-a material clamping plate, 22-a linear guide rail, 23-a linear sliding seat, 24-a cylinder mounting seat,

25-short stroke cylinder,

3-clamping finger,

31-first connecting hole, 32-second connecting long hole, 33-clamping jaw block, 34-mounting groove, 35-supporting surface, 36-first mounting hole, 37-second mounting hole.

Detailed Description

The present utility model will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1-3, the clamping and transferring mechanism of the integrated circuit lead frame comprises a material grabbing base plate 1, wherein a longitudinally movable material clamping base plate 11 is arranged at the top of the material grabbing base plate 1, and the material clamping base plate 11 can be connected with a longitudinally telescopic cylinder, so that the material grabbing base plate 1 can longitudinally move close to or far away from the lead frame to be clamped.

Limiting blocks 12 which are in positioning contact with the plate edges of the lead frame are longitudinally arranged on two sides of the clamping bottom plate 11 respectively, the inner side walls of the limiting blocks 12 are connected with the grabbing bottom plate 1 and the outer side walls of the clamping bottom plate 11 respectively, and L-shaped grooves 13 which are in contact with the plate side edges of the lead frame are formed in the bottoms of the inner side walls of the limiting blocks 12. The bottom of the limiting block 12 is also provided with a flaring slot 14 communicated with the L-shaped slot 13.

In this embodiment, the material grabbing backing plate 1 is continuously close to the lead frame to be clamped and transferred, the spacing between the limiting blocks 12 located on two sides of the material clamping bottom plate 11 can prop against the side edge of the lead frame, the flaring slot 14 at the bottom end of the limiting block 12 is matched with the L-shaped slot 13, the plate edge can be just clamped, the limiting block 12 is used for clamping and positioning the lead frame, and left and right offset is prevented.

The clamping base plate 11 is also provided with clamping pieces 2 which can clamp the lead frame in an openable and closable manner, the clamping pieces 2 comprise clamping plates 21 which are arranged along the length direction of the clamping base plate 11 and clamping fingers 3 which are longitudinally arranged on the clamping plates 21 at intervals, and each clamping finger 3 is provided with a clamping jaw block 33 which is contacted with the bottom surface of the lead frame and used for supporting the lead frame.

The clamping piece 2 works, the two clamping plates 21 are continuously close to each other, so that the clamping jaw blocks 33 at the end parts of the clamping fingers 3 are propped against the bottom plate edge of the lead frame, the plate edge of the lead frame is supported, the lead frame is prevented from falling from between the limiting blocks 12, and clamping is realized; when the lead frame is clamped, the lead frame cannot fall down, clamping force received by two sides of the lead frame during clamping is small, deformation and bending cannot occur, the lead frame can be effectively protected, and damage is reduced.

Specifically, the clamping member 2 further includes a bidirectional driving member for driving the two clamping plates 21 to approach or separate from each other in the width direction of the clamping bottom plate 11. The bidirectional driving piece comprises an air cylinder mounting seat 24 arranged at the top of the clamping bottom plate 11, two short-stroke air cylinders 25 with the same movement stroke are arranged on the air cylinder mounting seat 24, the short-stroke air cylinders 25 are the prior outsourcing ADVC-10-5-A-P-FESTO short-stroke air cylinders 25, and piston rods of the two short-stroke air cylinders 25 are arranged in a back-to-back mode and are respectively connected with the clamping plate 21, so that the two short-stroke air cylinders 25 extend or retract simultaneously.

The clamping base plate 11 is provided with two linear guide rails 22 along the width direction, and the clamping plate 21 is provided with a linear sliding seat 23 which is in sliding fit with the linear guide rails 22.

In this embodiment, the short-stroke cylinder 25 works simultaneously to drive the two clamping plates 21 to slide reciprocally along the linear guide rail 22 through the linear sliding seat 23, and the two clamping plates 21 are close to or far away from each other to drive the clamping fingers 3 mounted on the clamping plates 21 to continuously approach the lead frame between the limiting

blocks

12 and 12, so that the clamping jaw blocks 33 can support the lead frame.

Preferably, each clamping plate 21 is provided with at least two clamping fingers 3, and the top of the inner side wall of each clamping finger 3 is connected with the outer side wall of each clamping plate 21 in a height-adjustable manner. The outer side of the clamping plate 21 is provided with a first connecting hole 31, and the clamping finger 3 is provided with a second connecting long hole 32 matched with the first connecting hole 31. The clamping finger 3 is longitudinally movable, and according to the clamping height position of the lead frame, the second connecting long hole 32 and the first connecting hole 31 are mutually adjusted, so that a bolt is inserted later, and the clamping finger 3 is fixed in the first connecting hole 31 of the clamping plate 21 for adjustment.

The top of the clamping jaw block 33 is formed with a supporting surface 35 which is in supporting contact with the bottom plate edge of the lead frame to realize horizontal support, the outer side wall of the clamping jaw block 33 is formed with a mounting groove 34 for inserting the clamping finger 3, the mounting groove 34 is formed with a first mounting hole 36, and the clamping finger 3 is formed with a second mounting hole 37 which is coaxially aligned with the first mounting hole 36; through the coaxial alignment of the first mounting hole 36 and the second mounting hole 37, the bolt can be inserted into the knob, so that the clamping jaw block 33 can be detachably mounted on the clamping finger 3 for replacement. After the two clamping plates 21 are continuously close to each other, the clamping jaw blocks 33 are also moved to the plate edges of the bottom surface of the lead frame, and then the plate edges of the lead frame can be supported by the supporting surface 35 to prevent the lead frame from falling from the limiting block 12.

The material grabbing base plate 1 is provided with a detection groove 15, the material clamping base plate 11 is provided with a sliding hole 16, an induction column 17 capable of longitudinally moving under force is slidably arranged in the sliding hole 16 through a shaft sleeve, an anti-falling sleeve is arranged at the top of the induction column 17, the top of the material clamping base plate 11 is provided with a sensor 18 in inductive fit with the induction column 17, and the sensor 18 is an existing outsourcing miniature photoelectric sensor 18PM-L45. When the induction column 17 is not clamped initially, the induction column slides down under the action of gravity; the top of the sensing post 17 is not in contact with the sensor 18 at this time, i.e., it is recognized that it is not clamped to the leaded frame; when clamping the lead frame, the top of the lead frame is propped against the induction column 17, and the induction column 17 is stressed and lifted, so that the top of the induction column 17 is in induction fit with the sensor 18, and after the sensor 18 senses a signal, a signal clamping the lead frame can be output.

In view of the above, the present utility model has the above-mentioned excellent characteristics, so that it can be used to improve the performance and practicality of the prior art, and is a product with great practical value.

The foregoing is merely exemplary of the present utility model, and those skilled in the art should not be considered as limiting the utility model, since modifications may be made in the specific embodiments and application scope of the utility model in light of the teachings of the present utility model.

Claims

1. Clamping and transferring mechanism of integrated circuit lead frame, including grabbing the material backing plate, grab the material backing plate top and install but longitudinal movement's clamp material bottom plate, its characterized in that: limiting blocks for positioning and contacting edges of the lead frame are longitudinally arranged on two sides of the clamping bottom plate respectively, clamping pieces capable of clamping the lead frame in an openable and closable mode are further arranged on the clamping bottom plate, each clamping piece comprises a clamping plate arranged along the length direction of the clamping bottom plate and clamping fingers longitudinally arranged on the clamping plate at intervals, and each clamping finger is provided with a clamping jaw block for contacting the bottom surface of the lead frame and supporting the lead frame.

2. The integrated circuit lead frame clamping and transferring mechanism according to claim 1, wherein: the clamping piece further comprises a bidirectional driving piece for driving the two clamping plates to be close to or far away from each other in the width direction of the clamping bottom plate.

3. The clamping and transfer mechanism for an integrated circuit lead frame as recited in claim 2, wherein: the bidirectional driving piece comprises an air cylinder mounting seat arranged at the top of the clamping bottom plate, two short-stroke air cylinders with the same movement stroke are arranged on the air cylinder mounting seat, and piston rods of the two short-stroke air cylinders are oppositely arranged and respectively connected with the clamping plate.

4. The integrated circuit lead frame clamping and transferring mechanism according to claim 1, wherein: the clamping bottom plate is provided with more than two linear guide rails along the width direction, and the clamping plate is provided with a linear sliding seat in sliding fit with the linear guide rails.

5. The integrated circuit lead frame clamping and transferring mechanism according to claim 1, wherein: the inside wall of stopper is connected with the lateral wall of grabbing material backing plate and pressing from both sides material bottom plate respectively, and the inside wall bottom of stopper still shaping has the L type groove with lead frame's board side contact.

6. The integrated circuit lead frame clamping and transferring mechanism according to claim 5, wherein: and the bottom of the limiting block is also provided with a flaring groove communicated with the L-shaped groove.

7. The integrated circuit lead frame clamping and transferring mechanism according to claim 1, wherein: and each clamping plate is provided with at least two clamping fingers, and the top of the inner side wall of each clamping finger is connected with the outer side wall of each clamping plate in a height-adjustable manner.

8. The integrated circuit lead frame clamping and transferring mechanism as recited in claim 7, wherein: the outside shaping of pressing from both sides the flitch has first connecting hole, presss from both sides the material finger shaping have with first connecting hole complex second connecting slot hole.

9. The integrated circuit lead frame clamping and transfer mechanism of claim 8, wherein: the clamping jaw block is characterized in that a supporting surface in supporting contact with the bottom plate edge of the lead frame is formed at the top of the clamping jaw block, a mounting groove for inserting a clamping finger is formed in the outer side wall of the clamping jaw block, a first mounting hole is formed in the mounting groove, and a second mounting hole coaxially aligned with the first mounting hole is formed in the clamping finger.

10. The integrated circuit lead frame clamping and transferring mechanism according to claim 1, wherein: the material grabbing base plate is provided with a detection groove, the material clamping base plate is provided with a sensing column capable of longitudinally moving under stress, and the top of the material clamping base plate is provided with a sensor in sensing fit with the sensing column.