CN219216401U

CN219216401U - Chain type feeding mechanism of high-density integrated circuit lead frame equipment

Info

Publication number: CN219216401U
Application number: CN202223530986.2U
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 integrated circuit lead frame feeding, in particular to a chain type feeding mechanism of high-density integrated circuit lead frame equipment, which comprises a chain group and a chain wheel group connected with the chain group in a transmission way, wherein a plurality of conveying partition boards are equidistantly arranged on the chain group, one long side wall of each conveying partition board is formed with a convex guide block, the other long side wall is formed with a connecting block connected with the chain group, each conveying partition board is provided with a limiting and adjusting hole, and a limiting block capable of propping against the end face of the adjacent conveying partition board is arranged at an adjustable position of each limiting and adjusting hole; in the conveying process, the conveying partition boards can shake to a certain extent, the positions of the limiting blocks on the adjusting holes can be adjusted according to the thickness of the lead frames, so that two adjacent conveying partition boards are stopped by the limiting blocks when being close to each other, the two adjacent conveying partition boards cannot be combined, a certain distance is always kept, the lead frames in the conveying partition boards cannot be crushed, and the lead frames are fed and conveyed in a protective mode.

Description

Chain type feeding mechanism of high-density integrated circuit lead frame equipment

Technical Field

The utility model relates to the technical field of integrated circuit lead frame feeding, in particular to a chain type feeding mechanism of high-density integrated circuit lead frame equipment.

Background

The IC is an electronic component constituting an electronic device, and is mainly composed of an internal chip, pins provided on the chip, a case for packaging the chip and the pins, and the like, wherein, for the purpose of facilitating the adhesion and fixation of the chip, a plurality of chip adhesion islands are usually processed on a copper or aluminum sheet, and when the chip adhesion is performed, a layer of solder paste is coated at the position corresponding to the island, and then the chip is transferred onto the island, and then the solidification and welding operation of the chip is performed.

Generally, when the multi-island lead frame is processed, a copper or aluminum sheet is rolled, then a copper or aluminum strip is subjected to surface treatment, then a corresponding special die is used for stamping forming, then the lead frame strip is cut into a plurality of lead frame sheets, and then the bonding operation of chips is performed.

Therefore, the lead frames need to be fed piece by piece, and the Chinese utility model with the patent number of 202122640524.5 discloses an integrated circuit lead frame electroplating feeding and discharging integrated machine which comprises a feeding device and a discharging device, wherein the feeding device and the discharging device are provided with a transmission mechanism for transmitting the integrated circuit lead frames of the feeding device to the discharging device; the feeding device comprises a frame, a first feeding mechanism and a second feeding mechanism which are arranged on the frame; the first feeding mechanism comprises a material box component and a feeding component matched with the material box component and used for conveying the integrated circuit lead frames in the material box component to the transmission mechanism; the second feeding mechanism comprises a material rack for storing the integrated circuit lead frames, a delivery component for conveying the integrated circuit lead frames in the material rack to a preset position, and a suction component for conveying the integrated circuit lead frames positioned at the preset position to the conveying mechanism.

In the scheme, the partition plate assembly is arranged on the gear assembly to form a gap, and the lead frame needing to be fed is placed in the gap between the partition plates, so that pushing and feeding are realized. Because the baffle is driven by the toothed chain group of gear assembly and moves, consequently the top of baffle can shift in the motion process, can appear rocking, can be close to adjacent baffle, can crush the lead frame that lies in between baffle and the baffle this moment.

Disclosure of Invention

The utility model aims to provide a chain type feeding mechanism of high-density integrated circuit lead frame equipment, aiming at the defects of the prior art.

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

the chain type feeding mechanism of the high-density integrated circuit lead frame equipment comprises a chain group and a chain wheel group connected with the chain group in a transmission way, wherein a plurality of conveying partition boards are installed on the chain group at equal intervals, one long side wall of each conveying partition board is provided with a convex guide block, the other long side wall of each conveying partition board is provided with a connecting block connected with the chain group, each conveying partition board is provided with a limiting and adjusting hole, and limiting blocks capable of propping against the end faces of the adjacent conveying partition boards are installed at the limiting and adjusting holes in an adjustable position.

Further: the chain type feeding mechanism further comprises a driving conveying shaft and a driven conveying shaft, wherein the driving conveying shaft and the driven conveying shaft are used for installing the chain wheel group, an installation box is arranged on the periphery of the chain wheel group, and a conveying opening which is used for placing the lead frame and is used for conveying the lead frame in an advancing mode is formed in the top of the installation box.

Further: the sprocket group is including installing a pair of driving sprocket on the driving conveying axle and installing a pair of driven sprocket on the driven conveying axle, and the quantity of chain group is two, and the chain group nestification is respectively between driving sprocket and driven sprocket, and every transport baffle shaping has two connecting blocks of being connected with the chain group.

Further: one end of the driving conveying shaft is provided with an induction assembly, the induction assembly comprises an induction turntable arranged at the end part of the driving conveying shaft, and a plurality of induction grooves are formed at the outer ring of the induction turntable in an annular equidistant manner; the outer side wall of the installation box is provided with an inductor which is in inductive fit with the inductive turntable.

Further: the mounting box comprises conveying side plates arranged at two ends of the driving conveying shaft and the driven conveying shaft, one of the conveying side plates is provided with a discharge hole for the lead frame to slide out in a standing posture, and the other conveying side plate is provided with a pushing component for pushing the lead frame out of the conveying partition plate to the discharge hole.

Further: the pushing assembly comprises a pushing plate arranged along the movement direction of the chain group, the back of the pushing plate is provided with a transverse guide shaft, and the conveying side plate is provided with a transverse guide hole for the transverse guide shaft to slide through; the pushing assembly further comprises a telescopic driving piece parallel to the transverse guide shaft, and the driving end of the telescopic driving piece slidably penetrates through the conveying side plate to be connected to the back of the pushing plate.

Further: the mounting box below is provided with the supporting baseplate, and one of them carries the curb plate to install and carries the bottom plate, carries the bottom plate to install vertical guiding axle, and the supporting baseplate has seted up the vertical guiding hole with vertical guiding axle coaxial alignment, and the guide sleeve that supplies vertical guiding axle to slide through is installed to the vertical guiding hole, and the supporting baseplate is installed and is connected with the vertical extension piece that carries the bottom plate.

Further: the two ends of the driven conveying shaft are respectively connected with a tensioning adjusting component, the tensioning adjusting component comprises an inner rolling bearing arranged at the end part of the driven conveying shaft and an outer rolling bearing coaxially nested in an outer ring of the inner rolling bearing, a long round hole for the transverse movement of the driven conveying shaft is formed in the conveying side plate, and a tensioning adjusting piece for driving the outer rolling bearing to reciprocate is arranged on the conveying side plate.

Further: the conveying side plate is provided with a transverse adjusting hole positioned on the periphery of the oblong hole, the outer rolling bearing is provided with a first adjusting bolt which is in elastic connection with the transverse adjusting hole, the tensioning adjusting piece comprises a tensioning seat arranged on the conveying side plate and a second adjusting bolt which is in threaded fit with the tensioning seat, and the second adjusting bolt is connected with the outer rolling bearing.

Further: the discharge gate is provided with a pair of blowing deflector that is eight characters structural arrangement and carries the bottom transport piece that supports the delivery to lead frame bottom flange, and bottom transport piece top has arranged the guide pinch roller with lead frame's top flange rolling fit.

The utility model has the beneficial effects that: the lead frames needing to be fed are placed into the distance between the conveying partition boards one by one, and the lead frames are positioned in two adjacent conveying partition boards to limit and move forward to convey the lead frames to a designated position for feeding under the transmission fit of the chain wheel group and the chain group of the conveying partition boards; in the conveying process, the conveying partition boards can shake to a certain extent, the positions of the limiting blocks on the adjusting holes can be adjusted according to the thickness of the lead frames, so that two adjacent conveying partition boards are stopped by the limiting blocks when being close to each other, the two adjacent conveying partition boards cannot be combined, a certain distance is always kept, the lead frames in the conveying partition boards cannot be crushed, and the lead frames are fed and conveyed in a protective mode.

Drawings

Fig. 1 is a schematic structural view of a chain type feeding mechanism.

Fig. 2 is a schematic view of another view angle structure of the chain type feeding mechanism, in which a partial structure of the mounting box is hidden, and a plurality of conveying partitions are hidden.

Fig. 3 is a schematic view of a part of the enlarged structure in fig. 1, including a pushing component.

Fig. 4 is a schematic view of a partial explosion structure of the connection of the conveying side plate with the sensing assembly and the tensioning adjustment assembly.

The reference numerals include:

1-mounting box,

10-conveying side plates, 11-driving conveying shafts, 12-driven conveying shafts, 13-driving chain wheels,

14-driven sprocket, 15-chain group, 16-conveying port, 17-supporting sliding plate,

18-conveying partition plates, 181-guide blocks, 182-connecting blocks, 183-limiting blocks, 184-limiting adjusting holes, 2-tensioning adjusting components,

21-inner rolling bearing, 22-outer rolling bearing, 23-oblong hole, 24-transverse adjusting hole,

25-a first adjusting bolt, 26-a second adjusting bolt, 27-a tensioning seat, 28-a connecting groove,

A 3-pushing component,

30-a discharge hole, 31-a push plate, 32-a transverse guide shaft, 33-a transverse guide hole,

34-a transverse telescopic driving piece, 35-a discharging guide plate, 36-a bottom conveying block, 37-a guide pinch roller,

4-sensing assembly,

41-induction turntable, 42-induction groove, 43-inductor, 44-support base plate, 45-conveying base plate,

46-longitudinal guide shaft, 47-guide sleeve, 48-longitudinal telescopic cylinder, 49-longitudinal guide hole.

Detailed Description

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

As shown in fig. 1-4, the chain type feeding mechanism of the high-density integrated circuit lead frame device comprises a pair of chain groups 15 which are arranged at intervals in parallel, a chain wheel group which is in transmission connection with the chain groups 15, and a driving conveying shaft 11 and a driven conveying shaft 12 which are used for installing the chain wheel group, wherein a mounting box 1 is arranged on the periphery of the chain groups 15, the mounting box 1 comprises conveying side plates 10 which are arranged at two ends of the driving conveying shaft 11 and the driven conveying shaft 12, and a conveying opening 16 which is used for placing the lead frame and is used for conveying the lead frame forwards is formed in the top of the mounting box 1.

The sprocket set includes a pair of driving sprockets 13 mounted on the driving conveying shaft 11 and a pair of driven sprockets 14 mounted on the driven conveying shaft 12, the chain set 15 is nested between the driving sprockets 13 and the driven sprockets 14, respectively, and each conveying partition 18 is formed with two connection blocks 182 connected with the chain set 15.

In this embodiment, the driving conveying shaft 11 is driven by a driving motor to realize rotation, and the driving sprocket 13 on the driving conveying shaft 11 is in transmission connection with the driven sprocket 14 on the driven conveying shaft 12 through the chain group 15, so that the driven conveying shaft 12 rotates simultaneously, and the sprocket group continuously performs annular runway-shaped intermittent motion.

The chain group 15 is provided with a plurality of conveying partition boards 18 at equal intervals, one long side wall of the conveying partition boards 18 is provided with a protruding guide block 181, the other long side wall is provided with a connecting block 182 connected with the chain group 15, each conveying partition board 18 is provided with a limit adjusting hole 184, the limit adjusting hole 184 is provided with a limit block 183 which can prop against the end face of the adjacent conveying partition board 18 in an adjustable position, a supporting sliding plate 17 which can slidingly support the conveying partition boards 18 is arranged between the driving conveying shaft 11 and the driven conveying shaft 12, one side of the supporting sliding plate 17 is provided with a conveying side plate 10, when the conveying partition boards 18 advance and convey a lead frame, the distance between the two guide blocks 181 on the bottom surface of the conveying partition boards 18 is identical to the width of the supporting sliding plate 17, the bottom surface of the supporting sliding plate can just be in sliding fit with the supporting sliding plate 17, the lead frame can not be concavely collapsed, and horizontal conveying is always kept.

In this embodiment, the lead frame is located in two adjacent conveying partitions 18 to limit and move forward to convey the lead frame to a specified position for feeding, in the conveying process, the conveying partitions 18 have certain shake, and the position of the limiting block 183 on the limiting and adjusting hole 184 can be adjusted according to the thickness of the lead frame, so that when two adjacent conveying partitions 18 are close to each other, the two adjacent conveying partitions 183 are stopped by the limiting block 183, the two adjacent conveying partitions are not combined, a certain distance is always kept, the lead frame in the conveying partitions 18 is not crushed, and the lead frame is fed in a protective manner.

The two ends of the driven conveying shaft 12 are respectively connected with a tensioning adjusting component 2, the tensioning adjusting component 2 comprises an inner rolling bearing 21 arranged at the end part of the driven conveying shaft 12 and an outer rolling bearing 22 coaxially nested in the outer ring of the inner rolling bearing 21, a long round hole 23 for the transverse movement of the driven conveying shaft 12 is formed in the conveying side plate 10, and a tensioning adjusting piece for driving the outer rolling bearing 22 to reciprocate is arranged. The conveying side plate 10 is provided with a transverse adjusting hole 24 positioned at the periphery of the oblong hole 23, the outer rolling bearing 22 is provided with a first adjusting bolt 25 which is in elastic connection with the transverse adjusting hole 24, the tensioning adjusting piece comprises a tensioning seat 27 arranged on the conveying side plate 10 and a second adjusting bolt 26 in threaded fit with the tensioning seat 27, the second adjusting bolt 26 is connected with the outer rolling bearing 22, the outer rolling bearing 22 is provided with a connecting groove 28, the end part of the second adjusting bolt 26 is provided with a connecting block 182, and the connecting block 182 is embedded into the connecting groove 28, so that the second adjusting bolt 26 cannot be separated from the outer rolling bearing 22 when rotating.

In this embodiment, the distance between the driving conveying shaft 11 and the driven conveying shaft 12 can affect the tension of the nested sprocket set, so when the distance is adjusted, the first adjusting bolt 25 can be loosened first to be connected with the transverse adjusting hole 24 at the periphery of the oblong hole 23; at this time, the second adjusting bolt 26 is twisted, and the outer rolling bearing 22 connected with the second adjusting bolt 26 can move along the oblong hole 23 to adjust the distance between the driving conveying shaft 11 and the driven conveying shaft 12, thereby adjusting the tension thereof; the first adjusting screw 25 is then screwed down and is fastened to the transverse adjusting bore 24, and the outer rolling bearing 22 is mounted in a fastened manner.

One of the conveying side plates 10 is provided with a discharge hole 30 for sliding out the lead frame in a standing posture, a limiting block 183 is positioned at one end of the conveying side plate 10 far away from the discharge hole 30 to prevent clamping of the lead frame, the other conveying side plate 10 is provided with a pushing component 3 for pushing out the lead frame from the conveying partition plate 18 to the discharge hole 30, the pushing component 3 comprises a pushing plate 31 arranged along the moving direction of the chain group 15, the back of the pushing plate 31 is provided with a transverse guide shaft 32, and the conveying side plate 10 is provided with a transverse guide hole 33 for sliding through the transverse guide shaft 32; the pushing assembly 3 further comprises a transverse telescopic driving member 34 parallel to the transverse guiding shaft 32, wherein the transverse telescopic driving member 34 can be a transverse telescopic cylinder, and the driving end of the transverse telescopic driving member 34 is slidably connected to the back of the pushing plate 31 through the conveying side plate 10.

In this embodiment, the lead frames to be fed are placed in the gap of the conveying partition 18 at one end of the conveying port 16 one by one in a standing posture, then the chain group 15 moves in a gap manner to perform forward conveying, when the lead frames are conveyed to the aligned discharge port 30, the pushing assembly 3 moves, the pushing plate 31 initially approaches the conveying side plate 10, at this time, the pushing plate 31 is driven by the telescopic driving member to perform forward movement perpendicular to the conveying direction of the chain group 15, the pushing plate 31 is in sliding fit with the transverse guide hole 33 through the transverse guide shaft 32, and the pushing plate 31 pushes the lead frames located in the gap of the conveying partition 18 out of the discharge port 30 in a linear movement.

The discharge port 30 is provided with a pair of discharging guide plates 35 which are arranged in a splayed structure and a bottom conveying block 36 which supports and conveys the bottom plate edge of the lead frame, the splayed structure discharging guide plates 35 are not easy to collide with the plate edge during pushing out, a guide pinch roller 37 which is in rolling fit with the top plate edge of the lead frame is arranged above the bottom conveying block 36, the guide pinch roller 37 is vertically aligned with the bottom conveying block 36, after the pushed lead frame is pushed out from the splayed structure discharging guide plates 35, the top plate edge of the lead frame is in rolling fit by the guide pinch roller 37, and the bottom plate edge is guided and supported by the bottom conveying block 36 and can be conveyed to the next procedure for processing.

Because the chain wheel group intermittently rotates under the drive of the active conveying shaft 11, the lead frame needing to be discharged is aligned with the discharge hole 30 when the chain wheel group rotates once, and therefore, one end of the active conveying shaft 11 is provided with the induction component 4, the induction component 4 comprises an induction turntable 41 arranged at the end part of the active conveying shaft 11, and a plurality of induction grooves 42 are formed at the outer ring of the induction turntable 41 in an annular equidistant manner; the outer side wall of the mounting box 1 is provided with an inductor 43 which is in inductive fit with the inductive turntable 41, and the inductor 43 is an existing outsourced PM-T45 photoelectric switch sensor.

When the sensing groove 42 of the sensing turntable 41 is aligned with the sensor 43, the sensor 43 does not generate sensing, when the driving conveying shaft 11 rotates once, the sensing turntable 41 rotates at equal angles, the sensor 43 correspondingly rotates at equal angles, at this time, the sensing groove 42 of the sensing turntable 41 is aligned with the sensor 43 and does not generate sensing, which means that the rotating angle is not offset at this time, and the lead frame at the forefront is always aligned with the discharge hole 30 every time the conveying partition 18 advances once.

When the sensing groove 42 of the sensing turntable 41 is not aligned with the sensor 43, that is, the rest of the sensing turntable 41 is aligned with the sensor 43, the sensor 43 senses the sensing turntable 41, the sensor 43 can be connected with an alarm signal to give out a warning sound, and the lead frame at the forefront end is always not aligned with the discharge port 30 when the conveying partition 18 is indicated to advance once, so that the deviation is generated, the discharge of the lead frame is affected, and a worker can pause the machine to adjust the equipment.

The phenomenon of discharge deviation caused by conveying deviation can be found rapidly, the machine is stopped in time for adjustment, and the phenomenon of material clamping is reduced.

The mounting box 1 below is provided with the supporting baseplate 44, and one of them carries the curb plate 10 to install and carries the bottom plate 45, carries the bottom plate 45 to install vertical guiding axle 46, and the supporting baseplate 44 has seted up the vertical guiding hole 49 with vertical guiding axle 46 coaxial alignment, and the guiding sleeve 47 that supplies vertical guiding axle 46 to slide through is installed to vertical guiding hole 49, and the supporting baseplate 44 is installed and is carried the vertical telescopic cylinder 48 that is connected with carrying the bottom plate 45, and the drive of vertical telescopic cylinder 48 is under for the height of mounting box 1 can be adjusted, carries the lead frame of different width, has enriched the functionality.

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. Chain type feed mechanism of high density integrated circuit lead frame equipment, including chain group and with chain group transmission connection's sprocket group, equidistance is installed a plurality of transport baffles, its characterized in that on the chain group: one long side wall of the conveying partition plate is provided with a protruding guide block, the other long side wall of the conveying partition plate is provided with a connecting block connected with the chain group, each conveying partition plate is provided with a limiting adjusting hole, and a limiting block capable of propping against the end face of the adjacent conveying partition plate is installed in an adjustable position of each limiting adjusting hole.

2. The chain type feeding mechanism of high-density integrated circuit lead frame equipment according to claim 1, wherein: the chain type feeding mechanism further comprises a driving conveying shaft and a driven conveying shaft, wherein the driving conveying shaft and the driven conveying shaft are used for installing the chain wheel group, an installation box is arranged on the periphery of the chain wheel group, and a conveying opening which is used for placing the lead frame and is used for the lead frame to advance and convey is formed in the top of the installation box.

3. The chain type feeding mechanism of high-density integrated circuit lead frame equipment according to claim 2, wherein: the chain wheel group comprises a pair of driving chain wheels arranged on a driving conveying shaft and a pair of driven chain wheels arranged on a driven conveying shaft, the number of the chain groups is two, the chain groups are respectively nested between the driving chain wheels and the driven chain wheels, and each conveying partition plate is formed with two connecting blocks connected with the chain groups.

4. The chain type feeding mechanism of high-density integrated circuit lead frame equipment according to claim 2, wherein: an induction component is arranged at one end of the active conveying shaft and comprises an induction turntable arranged at the end part of the active conveying shaft, and a plurality of induction grooves are formed at the outer ring of the induction turntable in an annular equidistant manner; the outer side wall of the installation box is provided with an inductor which is in inductive fit with the inductive turntable.

5. The chain type feeding mechanism of high-density integrated circuit lead frame equipment according to claim 2, wherein: the mounting box comprises conveying side plates arranged at two ends of the driving conveying shaft and the driven conveying shaft, wherein one of the conveying side plates is provided with a discharge hole for the lead frame to slide out in a standing posture, and the other conveying side plate is provided with a pushing assembly for pushing the lead frame out of the conveying partition plate to the discharge hole.

6. The chain type feeding mechanism of high-density integrated circuit lead frame equipment according to claim 5, wherein: the pushing assembly comprises a pushing plate arranged along the movement direction of the chain group, a transverse guide shaft is arranged at the back of the pushing plate, and a transverse guide hole for the transverse guide shaft to slide through is formed in the conveying side plate; the pushing assembly further comprises a telescopic driving piece parallel to the transverse guide shaft, and the driving end of the telescopic driving piece slidably penetrates through the conveying side plate to be connected to the back of the pushing plate.

7. The chain type feeding mechanism of high-density integrated circuit lead frame equipment according to claim 5, wherein: the mounting box below is provided with the supporting baseplate, and one of them carries the curb plate to install and carries the bottom plate, carries the bottom plate to install vertical guiding axle, and the supporting baseplate has seted up the vertical guiding hole with vertical guiding axle coaxial alignment, and the guiding sleeve that supplies vertical guiding axle to slide through is installed to the vertical guiding hole, and the supporting baseplate is installed and is connected with the vertical expansion piece that carries the bottom plate.

8. The chain type feeding mechanism of high-density integrated circuit lead frame equipment according to claim 5, wherein: the two ends of the driven conveying shaft are respectively connected with a tensioning adjusting assembly, the tensioning adjusting assembly comprises an inner rolling bearing arranged at the end part of the driven conveying shaft and an outer rolling bearing coaxially nested in an outer ring of the inner rolling bearing, a long round hole for the transverse movement of the driven conveying shaft is formed in the conveying side plate, and a tensioning adjusting piece for driving the outer rolling bearing to reciprocate is arranged on the conveying side plate.

9. The chain type feeding mechanism of high-density integrated circuit lead frame equipment according to claim 8, wherein: the conveying side plate is provided with a transverse adjusting hole located on the periphery of the oblong hole, the outer rolling bearing is provided with a first adjusting bolt in elastic connection with the transverse adjusting hole, the tensioning adjusting piece comprises a tensioning seat arranged on the conveying side plate and a second adjusting bolt in threaded fit with the tensioning seat, and the second adjusting bolt is connected with the outer rolling bearing.

10. The chain type feeding mechanism of high-density integrated circuit lead frame equipment according to claim 5, wherein: the discharging hole is provided with a pair of discharging guide plates which are arranged in a splayed structure and a bottom conveying block which supports and conveys the bottom plate edge of the lead frame, and a guide pinch roller which is in rolling fit with the top plate edge of the lead frame is arranged above the bottom conveying block.