Follow-up mechanism of feeding and discharging device of high-density integrated circuit lead frame

Abstract

The utility model relates to the technical field of lead frame carrying equipment, in particular to a follow-up mechanism of a feeding and discharging device of a high-density integrated circuit lead frame. A plurality of groups of material clamping mechanisms used for clamping the lead frame are arranged around the central axis of the turntable at intervals, the end parts of the supporting rods are provided with propping assemblies, the supporting rods of each group of material clamping mechanism are respectively and slidably mounted on the turntable, and a transverse pushing mechanism used for pushing the corresponding material clamping mechanism is arranged beside the turntable. The front face of the transverse pushing seat can be matched with the abutting roller to push the abutting assembly and the clamping mechanism to move synchronously with the conveying steel belt, and the abutting roller rolls along the front face of the transverse pushing seat. The receding inclined face on the back face of the transverse pushing base is matched with the abutting rolling wheel, when the transverse pushing base is reset, the receding inclined face of the next clamping mechanism can overcome the acting force of the floating spring to enable the floating base to retract and avoid relative to the abutting support, the transverse pushing base is reset to the other side of the abutting assembly, and therefore the situation that the mechanism is interfered and stuck is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to lead frame carrying equipment technical field, concretely relates to the follow mechanism of high density integrated circuit lead frame's feeding and discharging device. BACKGROUND

[0002] Lead frame as the important carrier in semiconductor integrated chip packaging technology, is the important bridge connecting internal circuit and external lead, also is a kind of key structural member that the electrical connection of chip internal circuit lead-out end and external lead is realized by bonding material (gold wire, aluminum wire, copper wire), forms electrical circuit, it plays the bridge function of connection with external wire, and the lead frame is needed in the majority of semiconductor integrated block, is important basic material in electronic information industry.

[0003] Lead frame needs to be fed and discharged in the electroplating process, and in the prior art, lead frame is carried from horizontal conveying belt (lead frame in horizontal lying posture) to conveying steel belt (lead frame in vertical posture) feeding, or conversely discharged. The conveying steel belt can refer to the technology disclosed in Chinese patent documents with publication numbers CN202989310U, CN202989325U, CN116926647A and CN116853783A, which transmits processing by clamping the upper side of the vertical posture lead frame, and the elastic clamp on the steel belt can be released and clamped by external force driving.

[0004] The transfer between horizontal conveying belt and conveying steel belt of lead frame is realized by turnover mechanism, therefore, the applicant has previously developed the turnover transfer mechanism disclosed in Chinese patent document with publication number CN219216591U, which clamps integrated circuit lead frame, including clamp pad that contacts one side of lead frame, clamp pad is installed with clamp assembly that clamps the plate edge of lead frame, clamp assembly includes rotating part and multiple clamp claws, clamp pad is provided with sliding part for installing rotating part and sliding guide for sliding adjustment of clamp claw position on clamp pad; When clamping, the contact surface of clamp pad contacts the contact surface of lead frame, the rotating part of clamp assembly drives the turnover of clamp claw, and the end thereof abuts against the bottom plate edge of lead frame, so that lead frame is attached to the bottom of clamp pad, on the one hand, it does not contact the electroplating area of the bottom surface of lead frame, which can prevent abrasion and damage, on the other hand, lead frame does not bend when clamping, which can reduce the damage caused by bending deformation, effectively protect lead frame and facilitate clamping and conveying.

[0005] In order to improve the feeding and discharging speed, the applicant has developed a rotary feeding equipment, which can realize clamping and releasing lead frame at different positions through 360° rotation of multiple clamping mechanisms. This technology has not been disclosed. The existing turnover transfer mechanism can follow the synchronous movement of the steel belt to realize the transmission of lead frame between the steel belt without stopping. Therefore, in order to retain the requirement of non-stop work, the rotary feeding needs to be designed with a follow-up non-stop structure. In the test stage, it is found that the multiple clamping mechanisms of the rotary type, wherein the horizontal pushing mechanism pushes part of the clamping mechanisms to be synchronized with the conveying steel belt, the horizontal pushing mechanism will interfere with the next clamping mechanism rotating over when it is reset, thereby restricting the rotation speed of the multiple clamping mechanisms. SUMMARY

[0006] In view of the above technical problems existing in the prior art, the utility model provides a follow-up mechanism of a feeding and discharging device for high-density integrated circuit lead frames.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] The utility model discloses a follow-up mechanism of a feeding and discharging device for high-density integrated circuit lead frames, which comprises a rotating disc arranged transversely around a central shaft and a transposition driving module for driving the rotating disc to stepwise rotate.

[0009] A plurality of clamping mechanisms for clamping lead frames are arranged around the central shaft of the rotating disc, each clamping mechanism comprising a support rod and a clamping assembly mounted on the support rod in a clamping and releasing manner for clamping and releasing lead frames, and the support rod is provided with a clamping and releasing driving module for driving the clamping assembly.

[0010] The end of the support rod is provided with a abutting assembly, which comprises an abutting support, a floating seat, a floating spring and an abutting roller, the abutting support is fixed to the support rod, the floating seat is slidably installed on the abutting support in a controlled manner, the floating spring applies force to the floating seat to make the floating seat elastically protrude relative to the abutting support, and the abutting roller is rotatably installed on the floating seat.

[0011] The support rod of each clamping mechanism is slidably installed on the rotating disc, and a horizontal pushing mechanism for pushing the corresponding clamping mechanism is arranged beside the rotating disc, the horizontal pushing mechanism comprises a bracket, a follow-up rail and a follow-up seat, the follow-up rail is fixed to the bracket and parallel to the conveying steel belt outside, the follow-up seat is slidably installed on the follow-up rail, and the bracket is provided with a follow-up driving module for driving the follow-up seat; the follow-up seat is provided with a horizontal pushing seat, the front surface of the horizontal pushing seat can cooperate with the abutting roller to push the abutting assembly and the clamping mechanism to move synchronously with the conveying steel belt outside; the back surface of the horizontal pushing seat is provided with a give-way inclined surface, which cooperates with the abutting roller to overcome the action force of the floating spring and make the floating seat retract relative to the abutting support.

[0012] As a further optional scheme, the bottom of the horizontal pushing seat is arc-shaped.

[0013] As a further optional solution, the abutting assembly further comprises a guide bearing mounted on the floating seat, and the abutting support is provided with a groove for the guide bearing to slide.

[0014] As a further optional solution, the rotating disc comprises a first disc body, a middle rod and a second disc body, the first disc body and the second disc body are fixed to two end portions of the middle rod, and the first disc body and the second disc body are provided with a linear bearing in alignment, and the supporting rods pass through the linear bearings of the first disc body and the second disc body.

[0015] As a further optional solution, the material clamping mechanism is provided with a reset spring, so that each group of the material clamping mechanism is kept in an initial position, in which the material clamping assembly is inclined to the first disc body or the second disc body, and the supporting rods are aligned in equal length and pass out of the rotating disc, and after the action force of the horizontal pushing mechanism on the supporting rods is removed, the reset spring drives the supporting rods to return to the initial position.

[0016] As a further optional solution, the reset spring is sleeved on the supporting rod, and is compressed to apply a pushing force to the material clamping assembly.

[0017] As a further optional solution, an extension rod is fixed at the rotation center of the first disc body, and the extension rod is connected with a first bearing seat; the position changing driving module comprises a position changing driving motor, and an output shaft of the position changing driving motor is connected with the extension rod.

[0018] As a further optional solution, an extension cylinder is fixed at the rotation center of the second disc body, and the extension cylinder is connected with a second bearing seat; the second bearing seat is connected with a pneumatic sliding ring, a through pipe hole is formed at a position close to the rotation center of the second disc body, and the pneumatic sliding ring and a closing and opening driving finger cylinder are connected through a soft air pipe, and the soft air pipe passes through the extension cylinder and the through pipe hole.

[0019] The high-density integrated circuit lead frame feeding and discharging device has the advantages that:

[0020] When the high-density integrated circuit lead frame feeding and discharging device is used, the front surface of the horizontal pushing seat can cooperate with the abutting roller to push the abutting assembly and the material clamping mechanism to move synchronously with the conveying steel belt, and meanwhile, the rotating disc does not stop rotating, and the abutting roller rolls along the front surface of the horizontal pushing seat. The back surface of the horizontal pushing seat is provided with a yielding inclined surface, and the yielding inclined surface cooperates with the abutting roller. When the horizontal pushing seat is reset, the supporting rods and the abutting assembly pushed forward are also reset, and the yielding inclined surface of the next group of the material clamping mechanism can overcome the action force of the floating spring to make the floating seat retract and yield relative to the abutting support, so that the horizontal pushing seat is reset to the other side of the abutting assembly, and thus, the mechanism interference and jamming are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the high-density integrated circuit lead frame feeding and discharging device.

[0022] Figure 2 This is a schematic diagram of the lateral push mechanism in the embodiment.

[0023] Figure 3 This is a schematic diagram of the clamping mechanism in the embodiment.

[0024] Figure 4 This is a schematic diagram of the abutment component in the embodiment.

[0025] Figure 5 This is an exploded view of the abutment component in the embodiment.

[0026] Figure 6 This is a schematic diagram of the horizontal pusher seat in the embodiment.

[0027] Figure label:

[0028] Clamping mechanism 1; support rod 11, first rod 111, second rod 112; opening and closing drive module 13; bearing seat 14; return spring 18.

[0029] Turntable 21, first disc body 211, central rod 212, second disc body 213, through hole 2131, extension rod 214, first bearing seat 215, extension cylinder 216, second bearing seat 217; shift drive module 22, shift drive motor 221; pneumatic slip ring 23.

[0030] Conveyor steel belt H.

[0031] 3. Horizontal push mechanism, 31. Support, 32. Follower rail, 33. Follower seat, 34. Follower drive module, 35. Horizontal push seat, 35. Yielding slope, 351.

[0032] Abutting component 400, abutting support 401, floating seat 402, floating spring 403, abutting roller 404, guide bearing 405. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] The follower mechanism of the loading and unloading device for the high-density integrated circuit lead frame in this embodiment, such as... Figures 1 to 6 As shown, it includes a turntable 21 arranged horizontally around the central axis and a shift drive module 22 for driving the turntable 21 to rotate stepwise. Multiple sets of clamping mechanisms 1 are arranged around the central axis of the turntable 21. There are a total of eight sets of clamping mechanisms 1 in the figure, and the adjacent sets are arranged at 45°.

[0035] The rotating disc 21 comprises a first disc body 211, a middle rod 212, and a second disc body 213, the first disc body 211 and the second disc body 213 are fixed to the two end portions of the middle rod 212, the rotating center of the first disc body 211 is fixed with an extension rod 214, and the extension rod 214 is connected with a first bearing seat 215. The transposition driving module 22 comprises a transposition driving motor 221, the output shaft of the transposition driving motor 221 is connected with the extension rod 214. The rotating center of the second disc body 213 is fixed with an extension cylinder 216, and the extension cylinder 216 is connected with a second bearing seat 217. In use, the transposition driving motor 221 drives the extension rod 214, the first disc body 211, the second disc body 213, the middle rod 212, and the extension cylinder 216 to rotate as a whole, so as to drive the multiple groups of the lead clamping mechanisms 1 to step through 360° and switch at different positions in sequence.

[0036] In the embodiment, each group of the lead clamping mechanisms 1 comprises a support rod 11 and a lead clamping assembly for clamping / releasing the lead frame, which is installed in the support rod in a way of being able to open and close. The support rod 11 comprises a first rod body 111 and a second rod body 112 which are arranged side by side and fixed to each other. The first disc body 211 and the second disc body 213 are provided with a linear bearing in alignment. The first rod body 111 and the second rod body 112 are slidably fitted into the linear bearing of the first disc body 211 and the second disc body 213. The sliding direction of the first rod body 111 and the second rod body 112 is parallel to the movement direction of the conveying steel belt. The two rotating cylinders 12 are rotatably installed outside the first rod body 111 and the second rod body 112 via bearings. The support rod 11 is provided with an opening and closing driving module 13 for driving the lead clamping assembly to clamp / release. The support rod 11 is fixed with a bearing seat 14, and the opening and closing driving module 13 is installed on the bearing seat 14. It can be seen that the relative position of the support rod 11 and the bearing seat 14 in the axial direction is fixed.

[0037] In the embodiment, the second bearing seat 217 is connected with a pneumatic slip ring 23. The second disc body 213 is provided with a plurality of through holes 2131 which are distributed around the rotating center of the second disc body 213 and / or are in the shape of long strips. The pneumatic slip ring is a commercially available component, which is used for the rotating connection between two sections of air pipes without knotting. In use, the pneumatic slip ring 23 is connected with an external air source, so as to provide compressed air flow to the air cylinder.

[0038] In the embodiment, the rotating disc 21 is provided with a horizontal pushing mechanism 3 which is used for pushing the corresponding support rod 11. In this embodiment, the horizontal pushing mechanism 3 is used for pushing the support rod 11 which is located directly above. The lead clamping assembly on the support rod 11 is aligned with the conveying steel belt H, so that the support rod 11 and the lead clamping assembly thereon move synchronously with the conveying steel belt H. In this way, the lead clamping assembly is relatively stationary with the conveying steel belt H, which facilitates the lead frame to be taken off from the conveying steel belt H or to be delivered to the conveying steel belt H.

[0039] In the embodiment, the material clamping mechanism 1 is provided with a reset spring 18 sleeved outside the supporting rod 11, which is compressed to apply a pushing force to the bearing seat 14, so that each group of material clamping mechanisms 1 is kept in an initial position, that is, the material clamping assemblies are offset from the first disc body 211, and each supporting rod 11 is aligned in length and penetrates out of the rotating disc, that is, the lengths of each supporting rod 11 penetrating out of the first disc body are the same, and the ends of the cross pushing seat 35 are aligned in the longitudinal direction. After the action force of the cross pushing mechanism 3 on the supporting rod 11 is removed, the reset spring 18 drives the supporting rod 11 to return to the initial position.

[0040] The end of the supporting rod 11 is provided with a abutting assembly 400, which comprises an abutting support 401, a floating seat 402, a floating spring 403 and an abutting roller 404. The abutting support 401 is fixed to the end of the supporting rod 11, the floating seat 402 is slidingly installed on the abutting support 401 in a controlled stroke, the floating spring 403 applies a force to the floating seat 402 to make the floating seat 402 elastically protrude relative to the abutting support 401, and the abutting roller 404 is rotatably installed on the floating seat 402.

[0041] The cross pushing mechanism 3 comprises a bracket 31, a follow-up rail 32 and a follow-up seat 33. The follow-up rail 32 is fixed to the bracket 31 and is parallel to the conveying steel belt H, the follow-up seat 33 is slidingly installed on the follow-up rail 32, and the bracket 31 is provided with a follow-up driving module 34 for driving the follow-up seat 33. The follow-up seat 33 is provided with a cross pushing seat 35. In use, the front surface of the cross pushing seat 35 can cooperate with the abutting roller 404 to push the abutting assembly 400 and the material clamping mechanism 1 to move synchronously with the conveying steel belt H, and at the same time, the rotating disc 21 does not stop rotating, and the abutting roller 404 rolls along the front surface of the cross pushing seat 35. The back surface of the cross pushing seat 35 is provided with a giving-in inclined surface 351, which cooperates with the abutting roller 404. When the cross pushing seat 35 is reset, the supporting rod 11 and the abutting assembly 400 pushed forward are also reset, and the giving-in inclined surface 351 of the next group of material clamping mechanisms 1 can overcome the action force of the floating spring 403 to make the floating seat 402 retract relative to the abutting support 401 to avoid collision, so that the cross pushing seat 35 is reset to the other side of the abutting assembly 400, thereby realizing non-collision and non-stuck of the mechanism.

[0042] In the embodiment, the bottom of the cross pushing seat 35 is arc-shaped, and the arc is basically consistent with the rotating disc 21. The abutting assembly 400 further comprises a guide bearing 405 installed on the floating seat 402, and the abutting support 401 is provided with a groove for the guide bearing 405 to slide, so as to realize directional reciprocating movement of the floating seat 402.

[0043] In the description of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. The components of the utility model embodiments described and shown in the drawings can be arranged and designed in various different configurations.

[0044] Therefore, the above detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0045] In the description of the present application, it should be noted that the terms "middle", "upper", "lower", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected. It can be mechanically connected, or electrically connected. It can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A follower mechanism for loading and unloading high-density integrated circuit lead frame devices, characterized in that: The disc is arranged transversely to the central axis, and the transposition driving module is used to drive the disc to stepwise rotate; A plurality of groups of clamping mechanisms for clamping lead frames are arranged around the central axis of the disc, each group of clamping mechanisms comprising a support rod and a clamping assembly installed on the support rod and used to clamp and release the lead frame, and the support rod is provided with a tensioning and releasing driving module used to drive the clamping assembly to clamp and release the lead frame; The end of the support rod is provided with a abutting assembly, which comprises an abutting support, a floating seat, a floating spring and an abutting roller, the abutting support is fixed to the support rod, the floating seat is slidably installed on the abutting support in a controlled manner, the floating spring applies force to the floating seat to make the floating seat elastically protrude relative to the abutting support, and the abutting roller is rotatably installed on the floating seat. The support rod of each group of clamping mechanisms is slidably installed on the disc, and a lateral pushing mechanism used to push the corresponding clamping mechanism is arranged on the side of the disc, the lateral pushing mechanism comprises a bracket, a follower rail and a follower seat, the follower rail is fixed to the bracket and parallel to the external conveying steel belt, the follower seat is slidably installed on the follower rail, and the bracket is provided with a follower driving module used to drive the follower seat; the follower seat is provided with a lateral pushing seat, the front surface of the lateral pushing seat can cooperate with the abutting roller to push the abutting assembly and the clamping mechanism to move synchronously with the external conveying steel belt, and the back surface of the lateral pushing seat is provided with a giving-in inclined surface, which cooperates with the abutting roller to overcome the force of the floating spring and make the floating seat retract relative to the abutting support.

2. The high-density integrated circuit lead frame strip feeding and discharging device follow-up mechanism according to claim 1, characterized in that: The bottom of the lateral pushing seat is arc-shaped.

3. The high-density integrated circuit lead frame strip feeding and discharging device follow-up mechanism according to claim 1, characterized in that: The abutting assembly further comprises a guide bearing installed on the floating seat, and the abutting support is provided with a groove for the guide bearing to slide.

4. The high-density integrated circuit lead frame strip feeding and discharging device follow-up mechanism according to claim 1, characterized in that: The disc comprises a first disc body, a middle rod and a second disc body, the first disc body and the second disc body are fixed to the two end portions of the middle rod, the first disc body and the second disc body are provided with aligned linear bearings, and the support rod penetrates through the linear bearings of the first disc body and the second disc body.

5. The high-density integrated circuit lead frame strip feeding and discharging device follow-up mechanism according to claim 4, characterized in that: The clamping mechanism is provided with a reset spring to keep each group of clamping mechanisms in an initial position in which the clamping assembly is inclined to the first disc body or the second disc body, and each support rod is aligned and penetrates out of the disc, and after the action of the lateral pushing mechanism on the support rod is released, the reset spring drives the support rod to return to the initial position.

6. The high-density integrated circuit lead frame strip feeding and discharging device follow-up mechanism according to claim 5, characterized in that: The reset spring is sleeved on the support rod, and is compressed to apply a pushing force to the clamping assembly.

7. The high-density integrated circuit lead frame strip feeding and discharging device follow-up mechanism according to claim 4, characterized in that: A first bearing seat is connected to the extension rod at the center of the rotation of the first disc body, and the transposition driving module comprises a transposition driving motor, and the output shaft of the transposition driving motor is connected to the extension rod.

8. The high-density integrated circuit lead frame strip feeding and discharging device follow-up mechanism according to claim 4, characterized in that: A second bearing seat is connected to the extension cylinder at the center of the rotation of the second disc body, and the second bearing seat is connected to a pneumatic slip ring, a through pipe hole is formed in the second disc body near the center of the rotation, and the pneumatic slip ring and the tensioning and releasing driving finger cylinder are connected through a soft air pipe, and the soft air pipe penetrates through the extension cylinder and the through pipe hole.

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