Lead frame feeding device

Abstract

A lead frame feeding device comprises a base, a bearing assembly and a transferring assembly. The two sides of the base are provided with vertically-through concave parts, a bottom frame is arranged below the concave parts, and the bottom frame is provided with a sliding groove in the length direction of the bottom frame. The bearing assembly is installed on the base and comprises a supporting frame which moves back and forth between the two concave parts, two bearing frames are arranged in the supporting frame, and bearing plates which move vertically are arranged in the bearing frames and used for bearing the lead frame; the transferring assembly comprises two feeding modules installed on the bottom frame correspondingly, each feeding module comprises a push plate which is arranged in the sliding groove, moves in the length direction of the sliding groove and is used for pushing the bearing frame, and a plurality of jacking plates are arranged on the two sides of the sliding groove and are used for jacking the bearing frame into the supporting frame. A vertically-arranged first telescopic rod is further installed on the base and located between the two concave parts, a top plate is arranged at the moving end of the first telescopic rod, and a through hole is formed in the bottom of the bearing frame and used for allowing the top plate to penetrate through. A bearing frame bearing the lead frame can be conveyed while the lead frame is sucked, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor device production, in particular to a lead frame feeding device. Background Art

[0002] The lead frame is the chip carrier of the integrated circuit. The electrical connection between the internal circuit lead end of the chip and the external lead is achieved through bonding materials to form an electrical circuit. In the production process of semiconductor devices, the chip needs to be placed on the base island of the lead frame first. In the prior art, in order to save space, the lead frames are usually overlapped and then continuously transferred by suction cups. The chip is then fixed to the lead frame by a core bonding device. After the lead frame is used, the rack used to carry the lead frame needs to be removed and the lead frame is manually placed in the rack. If the lead frame is placed for too long at this time, the suction cup will not be able to absorb the lead frame, which will cause errors in subsequent processes. Therefore, the equipment is usually paused, but pausing the equipment will affect the rapid progress of production and reduce production efficiency. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the related prior art, the present application provides a lead frame loading device, which can transport a carrier frame carrying the lead frame while sucking the lead frame, thereby improving production efficiency and having strong practicality.

[0004] In order to achieve the above purpose, the utility model adopts the following technologies:

[0005] A lead frame feeding device comprises a base, a bearing component and a transfer component.

[0006] Recesses are provided on both sides of the base, which pass through the base up and down. A base frame is provided below the recesses, and a slide groove is provided along the length direction of the base frame. The bearing assembly is installed on the base, including a support frame that moves back and forth between the two recesses, and two symmetrically arranged bearing frames are provided in the support frame. The bearing frame is provided with a bearing plate that moves along the vertical direction and is used to carry the lead frame. The transfer assembly is arranged below the base, including two loading modules respectively installed on the base frame, and the loading module includes a push plate arranged in the slide groove and moving along the length direction thereof, which is used to push the bearing frame, and multiple lifting plates are provided on both sides of the slide groove, which are used to lift the bearing frame into the support frame.

[0007] Furthermore, the support frame is connected to the moving end of the horizontal linear mechanism, the horizontal linear mechanism is installed on the base, two symmetrically arranged through grooves are provided at the bottom of the support frame, and a partition is provided in the support frame to separate the through grooves, and the bottom of the carrier frame is located in the through grooves.

[0008] Furthermore, two rotating rods are provided on both sides of the length direction of the support frame. The rotating rods are located on the same axis, and both ends are passed through the protrusions. The protrusions are installed on the support frame. Multiple support blocks are sleeved on the rotating rods, and one end is connected to the output end of the rotating motor. The rotating rods located on both sides of the same through slot are driven by belts. The support blocks are L-shaped. When in use, the short end of the support block is in a horizontal state, and at least a part of it is located in the area of ​​the through slot.

[0009] Furthermore, a vertically arranged first telescopic rod is installed on the base, the first telescopic rod is located between the two recesses, and a top plate is provided at the movable end thereof, and a through hole is provided at the bottom of the supporting frame for passing through the top plate.

[0010] Furthermore, the base frame is provided with two guide grooves along its length direction, the guide grooves are respectively located on both sides of the slide groove, and one end is located at the end of the slide groove, a clamping block is provided in the guide groove, the clamping block is connected to the push plate by a T-shaped plate, the push plate is connected to the movable end of the second telescopic rod, and the second telescopic rod is installed at the bottom of the base frame.

[0011] Furthermore, a plurality of grooves penetrating vertically are provided on both sides of the slide slot, the lifting plate is located in the grooves and connected to the moving end of the vertical lifting mechanism, the vertical lifting mechanism is installed on the bottom plate, and the bottom plate is installed on the base frame.

[0012] Furthermore, a stop block is provided on the top surface of the jacking plate near the inner side of the base frame, which is used to abut against the load-bearing frame. A limit block is passed through the jacking plate near the outer side of the base frame. The outer side of the limit block is arc-shaped, and a connecting rod is provided at the lower end. The connecting rod is passed through the bracket, and the bracket is installed at the bottom of the jacking plate. A spring is sleeved on the connecting rod, and both ends of the spring abut against the limit block and the bracket respectively, and are always in a compressed state. A retaining ring is also provided at the end of the connecting rod for abutting against the bracket.

[0013] The beneficial effects of the utility model are as follows: while the lead frame is sucked up by the suction cup and transferred to the next process, the carrier frame carrying the lead frame can be moved upward to the support frame by the lifting plate, without pausing the equipment during the whole process, thereby not affecting the subsequent processes, thereby improving production efficiency while ensuring smooth production; the carrier plate can move in the vertical direction, making it convenient for the suction cup to suck up the lead frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure from the bottom perspective of an embodiment of the present application.

[0017] Figure 3 It is a three-dimensional schematic diagram of a carrier assembly according to an embodiment of the present application.

[0018] Figure 4 It is a three-dimensional schematic diagram of a transfer assembly according to an embodiment of the present application.

[0019] Figure 5 for Figure 4 An enlarged schematic diagram of point A. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings, but the embodiments described in the utility model are only part of the embodiments of the utility model, rather than all the embodiments.

[0021] like Figure 1-Figure 5 As shown, this example provides a lead frame loading device, including: a base 100 , a supporting component 200 , and a transfer component 300 .

[0022] Recesses 101 are respectively provided on both sides of the base 100 and penetrate through the upper and lower parts. A base frame 102 is provided below the recesses 101, and a slide groove 103 is provided along the length direction of the base frame 102; the bearing assembly 200 is installed on the base 100, including a support frame 201 that moves back and forth between the two recesses 101, and two symmetrically arranged bearing frames 202 are provided in the support frame 201, and a bearing plate 203 that moves along the vertical direction is provided in the bearing frame 202 for carrying the lead frame; the transfer assembly 300 is arranged below the base 100, including two loading modules respectively installed on the base frame 102, and the loading module includes a push plate 301 arranged in the slide groove 103 and moving along the length direction thereof for pushing the bearing frame 202, and a plurality of lifting plates 302 are provided on both sides of the slide groove 103 for lifting the bearing frame 202 into the support frame 201.

[0023] Specifically, the support frame 201 is connected to the moving end of the horizontal linear mechanism, and the horizontal linear mechanism is installed on the base 100. Two symmetrically arranged through grooves 204 are provided at the bottom of the support frame 201, and a partition plate 205 is provided in the support frame 201 for separating the through grooves 204. In the process of moving the supporting frame 202 from the base frame 102 to the support frame 201, the supporting frame 202 will pass through the recess 101 and the through groove 204 in turn, and after the supporting frame 202 has been moved into the support frame 201, the bottom of the supporting frame 202 is located in the through groove 204.

[0024] Specifically, in order to prevent the carrier 202 from slipping off the through slot 204, two rotating rods 206 are provided on both sides of the length direction of the support frame 201, and the rotating rods 206 are located on the same axis, and both ends thereof are passed through the protrusion 207, and the protrusion 207 is installed on the support frame 201. A plurality of support blocks 208 are sleeved on the rotating rod 206, and one end is connected to the output end of the rotating motor. The rotating rods 206 located on both sides of the same through slot 204 are driven by a belt. The support block 208 is L-shaped. When the carrier 202 needs to be transferred, the short end of the support block 208 is not located in the projection of the through slot 204 in the vertical direction to ensure the smooth movement of the carrier 202. When the carrier 202 is located in the support frame 201, the short end of the support block 208 is in a horizontal state, and at least a part of it is located in the area of ​​the through slot 204, thereby achieving support for the carrier 202.

[0025] Specifically, a vertically arranged first telescopic rod 209 is also installed on the base 100. The first telescopic rod 209 is located between the two recesses 101, and a top plate 210 is provided at its movable end. A through hole 211 is provided at the bottom of the support frame 202 for passing through the top plate 210. The support plate 203 can be moved upward by continuously moving the top plate 210 upward, so that the suction cup can absorb and transfer the lead frame, and when the support frame 201 moves, the top plate 210 is located below the support frame 201 to ensure that the support frame 201 can move smoothly.

[0026] Specifically, the base frame 102 is further provided with two guide grooves 104 along its length direction, the guide grooves 104 are respectively located on both sides of the slide groove 103, and one end is located at the end of the slide groove 103, and a clamping block 303 is provided in the guide groove 104. When the load frame 202 is placed on the base frame 102, the two ends of the load frame 202 are located between the clamping block 303 and the push plate 301, which can not only realize the positioning of the load frame 202, but also move the load frame 202 to the other end of the base frame 102. In order to facilitate the movement of the load frame 202, the clamping block 303 and the push plate 301 are connected by a T-shaped plate 304, and the push plate 301 is connected to the moving end of the second telescopic rod 305, and the second telescopic rod 305 is installed at the bottom of the base frame 102, so that the push plate 301 and the clamping block 303 move simultaneously.

[0027] Specifically, a plurality of grooves 105 extending vertically are provided on both sides of the slide slot 103. The lifting plate 302 is located in the groove 105 and is connected to the moving end of the vertical lifting mechanism. The vertical lifting mechanism is installed on the bottom plate 106, and the bottom plate 106 is installed on the base frame 102. The lifting plate 302 is moved back and forth in the vertical direction through the vertical lifting mechanism, so that the carrier frame 202 can be transferred back and forth between the base frame 102 and the support frame 201.

[0028] Specifically, a stopper 306 is provided on the top surface of the lifting plate 302 close to the inner side of the base frame 102 for abutting against the carrier frame 202, and a limit block 307 is passed through the lifting plate 302 close to the outer side of the base frame 102. The outer side of the limit block 307 is arc-shaped, and a connecting rod 308 is provided at the lower end. The connecting rod 308 is passed through a bracket 309, and the bracket 309 is installed at the bottom of the lifting plate 302. A spring 310 is sleeved on the connecting rod 308, and the two ends of the spring 310 respectively abut against the limit block 307 and the bracket 309, and are always in a compressed state. A retaining ring 311 is also provided at the end of the connecting rod 308 for abutting against the bracket 309. When the carrier frame 202 carrying the lead frame is placed on the base frame 102, the side of the carrier frame 202 will contact the limit block 307. The arc surface of block 307 contacts with the load frame 202, and as the load frame 202 moves, it will force the limit block 307 to move downward until the limit block 307 completely enters the lifting plate 302. At this time, the spring 310 is also further compressed. After the load frame 202 abuts against the stop block 306, the limit block 307 will pop out again under the action of the spring 310, thereby limiting the load frame 202 and preventing it from tipping over when moving in the vertical direction. In order to allow the load frame 202 to smoothly enter the support frame 201, some recessed areas can also be set at the bottom of the partition 205 and the two ends of the support frame 201. When the lifting plate 302 pushes the load frame 202 into the support frame 201, the limit block 307 and the stop block are located in the recessed area.

[0029] Since the above are only preferred embodiments of the present invention and are not intended to limit the present invention, it is obvious that those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A lead frame feeding device, characterized in that: include: The base (100) has recesses (101) extending vertically through the base on both sides, a bottom frame (102) is provided below the recesses (101), and a slide groove (103) is provided along the length direction of the bottom frame (102); A bearing assembly (200) is mounted on the base (100), comprising a support frame (201) that moves back and forth between the two recesses (101), the support frame (201) being provided with two symmetrically arranged bearing frames (202), the bearing frames (202) being provided with a bearing plate (203) that moves in a vertical direction and is used to bear a lead frame; The transfer assembly (300) is arranged below the base (100), and comprises two loading modules respectively mounted on the base frame (102), wherein the loading module comprises a push plate (301) arranged in the slide groove (103) and movable along the length direction thereof, and used for pushing the support frame (202), and a plurality of lifting plates (302) are arranged on both sides of the slide groove (103) and used for lifting the support frame (202) into the support frame (201).

2. The lead frame feeding device according to claim 1, characterized in that: The support frame (201) is connected to the moving end of the horizontal linear mechanism, and the horizontal linear mechanism is installed on the base (100). The bottom of the support frame (201) is provided with two symmetrically arranged through grooves (204), and a partition plate (205) is provided in the support frame (201) for separating the through grooves (204). The bottom of the bearing frame (202) is located in the through grooves (204).

3. The lead frame feeding device according to claim 2, characterized in that: Two rotating rods (206) are also provided on both sides of the support frame (201) in the length direction. The rotating rods (206) are located on the same axis, and both ends are passed through the protrusions (207). The protrusions (207) are installed on the support frame (201). A plurality of support blocks (208) are sleeved on the rotating rod (206), and one end is connected to the output end of the rotating motor. The rotating rods (206) located on both sides of the same through slot (204) are driven by belts. The support blocks (208) are L-shaped. When in use, the short ends of the support blocks (208) are in a horizontal state, and at least a portion of them are located in the area of ​​the through slot (204).

4. The lead frame feeding device according to claim 1, characterized in that: A vertically arranged first telescopic rod (209) is also mounted on the base (100); the first telescopic rod (209) is located between the two recesses (101), and a top plate (210) is provided at the movable end thereof; a through hole (211) is provided at the bottom of the support frame (202) for passing through the top plate (210).

5. The lead frame feeding device according to claim 1, characterized in that: The base frame (102) is further provided with two guide grooves (104) along its length direction. The guide grooves (104) are respectively located on both sides of the slide groove (103), and one end is located at the end of the slide groove (103). A clamping block (303) is provided in the guide groove (104). The clamping block (303) is connected to the push plate (301) via a T-shaped plate (304). The push plate (301) is connected to the movable end of a second telescopic rod (305). The second telescopic rod (305) is installed at the bottom of the base frame (102).

6. The lead frame feeding device according to claim 1, characterized in that: A plurality of grooves (105) penetrating vertically are provided on both sides of the slide groove (103); the lifting plate (302) is located in the grooves (105) and is connected to the moving end of the vertical lifting mechanism; the vertical lifting mechanism is mounted on a bottom plate (106); and the bottom plate (106) is mounted on the base frame (102).

7. The lead frame feeding device according to claim 1, characterized in that: A stopper (306) is provided on the top surface of the lifting plate (302) near the inner side of the base frame (102) for abutting against the support frame (202); a limit block (307) is provided on the lifting plate (302) near the outer side of the base frame (102); the limit block (307) is arc-shaped on the outer side and a connecting rod (308) is provided at the lower end; the connecting rod (308) is passed through a bracket (309); the bracket (309) is installed at the bottom of the lifting plate (302); a spring (310) is sleeved on the connecting rod (308); the two ends of the spring (310) respectively abut against the limit block (307) and the bracket (309) and are always in a compressed state; a retaining ring (311) is also provided at the end of the connecting rod (308) for abutting against the bracket (309).

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