Rotary material transferring device of high-density integrated circuit lead frame

Abstract

The utility model relates to the technical field of lead frame material moving structures, in particular to a rotary material moving device of a high-density integrated circuit lead frame, which comprises a turntable with a transversely arranged central shaft and a transposition driving module for driving the turntable to rotate step by step, a plurality of groups of clamping mechanisms are arranged around the central shaft of the turntable at intervals; each group of material clamping mechanism comprises a supporting rod, two rotating cylinders which are rotatably mounted on the supporting rod and are arranged in parallel, and clamping pieces which are respectively fixed on the two rotating cylinders, and the supporting rod is mounted on the turntable; the supporting rod is provided with an opening and closing driving module used for driving the two rotating cylinders to rotate in opposite directions so as to drive the clamping pieces of the two rotating cylinders to get close to clamp the lead frame or get away from each other to loosen the lead frame. When in use, the turntable drives the plurality of groups of material clamping mechanisms to rotate, and the groups of material clamping mechanisms on the turntable can be independently closed at different positions to clamp the lead frame or independently opened to release the lead frame. And the speed of the rotary feeding and discharging mode is higher, and the increasingly-accelerated assembly line machining and production requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to lead frame material moving structure technical field, concretely relates to the rotating material moving device of high density integrated circuit lead frame. BACKGROUND

[0002] Lead frame as the important carrier in semiconductor integrated chip packaging process, is the important bridge of 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 means of 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 is in horizontal lying posture) to steel belt conveying belt (lead frame is in vertical posture) feeding, or conversely discharging, which is realized by turnover mechanism, therefore, the applicant has previously developed the turnover transfer mechanism disclosed in the Chinese patent document with publication number CN219216591U for clamping integrated circuit lead frame, which comprises a clamping pad plate in contact with one side of the lead frame, the clamping pad plate is provided with a clamping assembly for clamping the edge of the lead frame, the clamping assembly comprises a rotating part and a plurality of clamping claws, the clamping pad plate is provided with a sliding part for mounting the rotating part and a sliding guide for adjusting the position of the clamping claw when the sliding part slides on the clamping pad plate; when clamping, the contact surface of the clamping pad plate is in contact with the lead frame, the rotating part of the clamping assembly drives the clamping claw to overturn, and the end portion thereof abuts against the bottom edge of the lead frame, so that the lead frame is attached to the bottom of the clamping pad plate, on the one hand, the electroplating area of the bottom surface of the lead frame is not contacted, which can prevent damage caused by abrasion, on the other hand, the lead frame will not be bent when clamping, which can reduce the damage caused by bending deformation, effectively protect the lead frame and facilitate clamping and conveying.

[0004] The material carrying speed of the above turnover transfer mechanism needs to be further improved to meet the increasing speed of the assembly line processing demand. SUMMARY

[0005] In view of the above technical problems existing in the prior art, the utility model provides a rotating material moving device for high-density integrated circuit lead frame.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The utility model discloses a rotating material moving device for high-density integrated circuit lead frame, which comprises a rotating disc arranged transversely around a central shaft and a transposition driving module for driving the rotating disc to stepwise rotate.

[0008] Each set of the clamping mechanism comprises a support rod, two rotating drums arranged side by side and rotatably mounted on the support rod, and clamping pieces respectively fixed on the two rotating drums, the support rod is mounted on the rotating disc, the support rod is provided with a limiting piece to limit axial displacement of the rotating drum; the support rod is provided with a closing and opening driving module for driving the two rotating drums to rotate in opposite directions, so as to drive the clamping pieces of the two rotating drums to approach or separate to clamp or release the lead frame.

[0009] As a further optional solution, the support rod comprises a first rod body and a second rod body arranged side by side and fixed to each other, and the two rotating drums are rotatably mounted outside the first rod body and the second rod body via bearings.

[0010] As a further optional solution, the support rod is fixed with a bearing seat, and the closing and opening driving module is mounted on the bearing seat.

[0011] As a further optional solution, the closing and opening driving module comprises a closing and opening driving finger cylinder and a connecting rod transmission group, the cylinder barrel of the closing and opening driving finger cylinder is fixed on the bearing seat, the connecting rod transmission group comprises a plurality of rod segments connected in sequence, and the first end and the last end of the connecting rod transmission group are respectively fixedly connected with the output shaft of the closing and opening driving finger cylinder and the rotating drum.

[0012] 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 on the two end portions of the middle rod, and the support rod penetrates through the first disc body and the second disc body.

[0013] As a further optional solution, an extension rod is fixed at the center of rotation of the first disc body, and the extension rod is connected with a first bearing seat; the transposition driving module comprises a transposition driving motor, and the output shaft of the transposition driving motor is connected with the extension rod.

[0014] As a further optional solution, an extension cylinder is fixed at the center of rotation 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 slip ring, a through pipe hole is formed in the second disc body close to the center of rotation, the pneumatic slip ring is connected with the closing and opening driving finger cylinder through a soft air pipe, and the soft air pipe penetrates through the extension cylinder and the through pipe hole.

[0015] As a further optional solution, the number of the closing and opening driving modules of each set of the clamping mechanism is two or more, the bearing seat is provided with a shunt seat, the shunt seat is provided with an air inlet converging channel, an air outlet converging channel, two or more air inlet shunt channels and two or more air outlet shunt channels, each air inlet shunt channel is communicated with the air inlet converging channel, and each air outlet shunt channel is communicated with the air outlet converging channel; the air outlet end of the pneumatic slip ring is communicated with the air inlet ends of the closing and opening driving finger cylinders of the two or more closing and opening driving modules via the air inlet converging channel and the air inlet shunt channels; the air inlet end of the pneumatic slip ring is communicated with the air outlet ends of the closing and opening driving finger cylinders of the two or more closing and opening driving modules via the air outlet converging channel and the air outlet shunt channels.

[0016] As a further optional solution, the plurality of pipe holes are distributed around the rotation center of the second disc body, and / or the pipe holes are in the shape of long strips.

[0017] As a further optional solution, each clamping piece comprises a piece body and a plurality of clamping strips integrally extended from the piece body and arranged side by side, and the clamping strips of the clamping pieces on the two rotating cylinders are arranged in one-to-one alignment.

[0018] The high-density integrated circuit lead frame rotating material transfer device has the following beneficial effects:

[0019] The high-density integrated circuit lead frame rotating material transfer device has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The high-density integrated circuit lead frame rotating material transfer device has the following beneficial effects:

[0021] Figure 2 The high-density integrated circuit lead frame rotating material transfer device has the following beneficial effects:

[0022] Figure 3 The high-density integrated circuit lead frame rotating material transfer device has the following beneficial effects:

[0023] Figure 4 The high-density integrated circuit lead frame rotating material transfer device has the following beneficial effects:

[0024] Figure 5 The high-density integrated circuit lead frame rotating material transfer device has the following beneficial effects:

[0025] Figure 6 The high-density integrated circuit lead frame rotating material transfer device has the following beneficial effects:

[0026] Figure 7 The high-density integrated circuit lead frame rotating material transfer device has the following beneficial effects:

[0027] Figure 8 The high-density integrated circuit lead frame rotating material transfer device has the following beneficial effects:

[0028] REFERENCE NUMERALS:

[0029] The high-density integrated circuit lead frame rotating material transfer device has the following beneficial effects:

[0030] Supporting rod 11, first rod body 111, second rod body 112; rotary drum 12, inner concave plane 121; opening and closing driving module 13, opening and closing driving finger air cylinder 131, connecting rod transmission group 132; bearing seat 14, limiting piece 15; clamping piece 16, piece body 161, clamping strip 162, protective sleeve 163; flow dividing seat 17, air inlet converging channel 171, air outlet converging channel 172, air inlet diverging channel 173, air outlet diverging channel 174.

[0031] Rotary disc 21, first disc body 211, middle rod 212, second disc body 213, pipe penetrating hole 2131, extension rod 214, first bearing seat 215, extension cylinder 216, second bearing seat 217;

[0032] Transposition driving module 22, transposition driving motor 221;

[0033] Pneumatic slip ring 23. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. In the case of no conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0035] The rotary material transferring device of the high-density integrated circuit lead frame in the embodiment comprises a rotary disc 21 and a transposition driving module 22 for driving the rotary disc 21 to rotate step by step. Figures 1 to 8 As shown in the figure, the rotary disc 21 is arranged transversely to the central axis, and the transposition driving module 22 is used for driving the rotary disc 21 to rotate step by step. A plurality of clamping mechanisms 1 are arranged around the central axis of the rotary disc 21, and there are eight clamping mechanisms 1 in total in the figure, and adjacent two groups are arranged at an angle of 45°.

[0036] The rotary 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. An extension rod 214 is fixed at the rotation center of the first disc body 211, and the extension rod 214 is connected with a first bearing seat 215. The transposition driving module 22 comprises a transposition driving motor 221, and the output shaft of the transposition driving motor 221 is connected with the extension rod 214. An extension cylinder 216 is fixed at the rotation center of the second disc body 213, and the extension cylinder 216 is connected with a second bearing seat 217. When 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 plurality of clamping mechanisms 1 to switch step by step at different positions around 360°.

[0037] In the embodiment, each set of the material clamping mechanism 1 comprises a support rod 11 and two rotating cylinders 12. The support rod 11 comprises a first rod body 111 and a second rod body 112 arranged side by side and fixed to each other, and the first rod body 111 and the second rod body 112 are provided with a first disc body 211 and a second disc body 213. 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 a clamping and driving module 13 for driving the two rotating cylinders 12 to rotate in opposite directions. The support rod 11 is fixed with a bearing seat 14, and the clamping and driving module 13 is installed on the bearing seat 14. The support rod 11 is provided with a limiting piece 15 for limiting the axial displacement of the rotating cylinder 12 relative to the support rod 11. It can be seen that the relative positions of the support rod 11, the bearing seat 14 and the rotating cylinder 12 in the axial direction are fixed and unchangeable. The two rotating cylinders 12 are respectively provided with outward clamping pieces 16. In use, the clamping and driving module 13 drives the two rotating cylinders 12 to rotate in opposite directions (one in a clockwise direction and the other in an anticlockwise direction) during clamping, thereby driving the clamping pieces 16 on the two rotating cylinders 12 to approach and clamp the lead frame. When it is necessary to release the clamped lead frame, the reverse operation can be performed.

[0038] In the embodiment, the clamping and driving module 13 comprises a clamping and driving finger air cylinder 131 and a connecting rod transmission group 132. The cylinder barrel of the clamping and driving finger air cylinder 131 is fixed to the bearing seat 14. The connecting rod transmission group 132 comprises a plurality of (three in the embodiment) rod segments that are sequentially hinged. The two output shafts of the clamping and driving finger air cylinder 131 are respectively provided with the connecting rod transmission group 132. The output shaft of each connecting rod transmission group 132 is fixedly connected with the output shaft of the clamping and driving finger air cylinder 131 and the rotating cylinder 12. The stroke of the clamping and driving finger air cylinder 131 determines the rotation amplitude of the rotating cylinder 12 and the clamping degree of the clamping piece 16.

[0039] In the embodiment, the number of the clamping and driving modules 13 of each set of the material clamping mechanism 1 is two, and the two clamping and driving modules 13 move synchronously. In order to reduce the amount of cylinder pipes, the bearing seat 14 is provided with a shunt seat 17. The shunt seat 17 is provided with an air inlet converging channel 171, an air outlet converging channel 172, two air inlet shunt channels 173 and two air outlet shunt channels 174. Each air inlet shunt channel 173 is connected with the air inlet converging channel 171, and each air outlet shunt channel 174 is connected with the air outlet converging channel 172. The air inlet ends of the two clamping and driving finger air cylinders 131 of the same set of the material clamping mechanism 1 are connected with the air inlet shunt channels 173, and the air outlet ends are connected with the air outlet converging channel 172.

[0040] In the embodiment, the second bearing seat 217 is connected with the pneumatic slip ring 23, the second disc body 213 is provided with penetrating holes 2131 near the rotation center, the penetrating holes 2131 are distributed around the rotation center of the second disc body 213, and / or the penetrating holes 2131 are in strip shape. The pneumatic slip ring is a commercially available component, which is used for the rotary connection between two sections of air pipes without knotting, and its principle is known and will not be described here. In use, the pneumatic slip ring 23 is connected with an external air source, and the purpose is to provide compressed air flow to the opening and closing driving finger cylinder 131. The specific pipe connection mode is that the air outlet end of the pneumatic slip ring 23 is connected with the air inlet ends of the opening and closing driving finger cylinders 131 of the two groups of opening and closing driving modules 13 through soft air pipes in sequence via the air inlet manifold 171 and the air inlet branch pipes 173, so as to provide high-pressure air flow to drive the opening and closing driving finger cylinders 131 to open; the air inlet end of the pneumatic slip ring 23 is connected with the air outlet ends of the opening and closing driving finger cylinders 131 of the two groups of opening and closing driving modules 13 through soft air pipes in sequence via the air outlet branch pipes 174 and the air outlet manifold 172, so that the air flow of the opening and closing driving finger cylinders 131 forms a cycle. The soft air pipes pass through the extension cylinder 216 and the penetrating holes 2131, and the air pipe arrangement is more convenient and simple.

[0041] In the embodiment, the clamping piece 16 comprises a piece body 161 and a plurality of clamping strips 162 arranged in parallel and integrally extended from the piece body 161, and the clamping strips 162 of the clamping pieces 16 on the two rotating cylinders 12 are arranged in one-to-one alignment with each other. Each clamping strip 162 is sleeved with a soft protective sleeve 163 to avoid scratching the lead frame. The piece body 161 is bent, and the piece bodies 161 of the clamping pieces 16 on the two rotating cylinders 12 are bent close to each other, so that the contact area with the lead frame is larger during clamping. The outer side of the rotating cylinder 12 is provided with a concave plane 121, and the piece body 161 is fixed by being attached to the concave plane 121.

[0042] 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.

[0043] Therefore, the above detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0044] In the description of the utility model, it is necessary to explain that the terms "middle", "upper", "lower", "horizontal", "inner", "outer" and the like indicate the position or location relationship based on the position or location relationship shown in the drawings, or the position or location relationship of the product of the application when it is usually placed, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0045] In the description of the utility model, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "set", "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. It can be the communication between the two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

Claims

1. A rotary transfer device for high density integrated circuit lead frames, characterized by: The rotary disc (21) is arranged transversely to the central axis, and the transposition driving module (22) is used to drive the rotary disc (21) to rotate step by step; a plurality of groups of material clamping mechanisms (1) are arranged around the central axis of the rotary disc (21); Each group of material clamping mechanisms (1) comprises a support rod (11), two rotary cylinders (12) arranged side by side and rotatably mounted on the support rod (11), and clamping pieces (16) respectively fixed to the two rotary cylinders (12); the support rod (11) is mounted on the rotary disc (21); the support rod (11) is provided with a limiting piece (15) for limiting the axial displacement of the rotary cylinder (12); the support rod (11) is provided with a closing and opening driving module (13) for driving the two rotary cylinders (12) to rotate in opposite directions, so as to drive the clamping pieces (16) of the two rotary cylinders (12) to approach each other to clamp the lead frame or to move away from each other to release the lead frame.

2. The rotating transfer device for high density integrated circuit lead frames as defined in claim 1 wherein: The support rod (11) comprises a first rod body (111) and a second rod body (112) arranged side by side and fixed to each other, and the two rotary cylinders (12) are rotatably mounted outside the first rod body (111) and the second rod body (112) via bearings.

3. The rotating transfer device for high density integrated circuit lead frames of claim 1 wherein: The support rod (11) is fixed with a bearing seat (14), and the closing and opening driving module (13) is mounted on the bearing seat (14).

4. The rotating transfer device for high density integrated circuit lead frames of claim 3 wherein: The closing and opening driving module (13) comprises a closing and opening driving finger air cylinder (131) and a connecting rod transmission group (132); the cylinder barrel of the closing and opening driving finger air cylinder (131) is fixed to the bearing seat (14); the connecting rod transmission group (132) comprises a plurality of rod segments connected in sequence, and the first end and the last end of the connecting rod transmission group (132) are fixedly connected with the output shaft of the closing and opening driving finger air cylinder (131) and the rotary cylinder (12) respectively.

5. The rotating transfer device for high density integrated circuit lead frames of claim 4 wherein: The rotary 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 support rod (11) penetrates through the first disc body (211) and the second disc body (213).

6. The rotating transfer device for high density integrated circuit lead frames of claim 5 wherein: A first bearing seat (215) is connected to the extension rod (214) fixed at the center of rotation of the first disc body (211); the transposition driving module (22) comprises a transposition driving motor (221), and the output shaft of the transposition driving motor (221) is connected with the extension rod (214).

7. The rotating transfer device for high density integrated circuit lead frames of claim 5 wherein: A second bearing seat (217) is connected to the extension cylinder (216) fixed at the center of rotation of the second disc body (213); the second bearing seat (217) is connected with a pneumatic slip ring (23); a pipe penetrating hole (2131) is formed in the second disc body (213) close to the center of rotation; the pneumatic slip ring (23) and the closing and opening driving finger air cylinder (131) are connected through a soft air pipe, and the soft air pipe penetrates through the extension cylinder (216) and the pipe penetrating hole (2131).

8. The rotating transfer device for high density integrated circuit lead frames of claim 7 wherein: The number of the opening and closing driving modules (13) of each set of the material clamping mechanism (1) is two or more, the bearing seat (14) is provided with a flow distribution seat (17), the flow distribution seat (17) is provided with an air inlet manifold (171), an air outlet manifold (172), two or more air inlet distribution channels (173) and two or more air outlet distribution channels (174), each air inlet distribution channel (173) is communicated with the air inlet manifold (171), and each air outlet distribution channel (174) is communicated with the air outlet manifold (172); the air outlet end of the pneumatic slip ring (23) is communicated with the air inlet ends of the opening and closing driving finger cylinders (131) of the two or more sets of the opening and closing driving modules (13) via the air inlet manifold (171) and the air inlet distribution channels (173); and the air inlet end of the pneumatic slip ring (23) is communicated with the air outlet ends of the opening and closing driving finger cylinders (131) of the two or more sets of the opening and closing driving modules (13) via the air outlet manifold (172) and the air outlet distribution channels (174).

9. The rotating transfer device for high density integrated circuit lead frames of claim 7 wherein: The plurality of pipe penetrating holes (2131) are distributed around the rotation center of the second disc body (213), and / or the pipe penetrating holes (2131) are in a strip shape.

10. The rotating transfer device for high density integrated circuit lead frames of claim 1 wherein: Each clamping piece (16) comprises a piece body (161) and a plurality of clamping strips (162) integrally extended from the piece body (161) and arranged in parallel, and the clamping strips (162) of the clamping pieces (16) on the two rotating cylinders (12) are arranged in one-to-one alignment.

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