Lead frame collating apparatus

Abstract

A lead frame arrangement device, it includes the feeding gripper and the unloading gripper of setting in both sides, the feeding gripper and the unloading gripper are set on longitudinal moving slide rail, move along longitudinal moving slide rail;Feeding gripper one side is provided with a primary arrangement platform, the primary arrangement platform four sides are provided with the length adjusting baffle and the width adjusting baffle by the drive mechanism mechanism drive movement;Between feeding gripper and unloading gripper is provided with transverse moving slide rail, is provided with secondary arrangement platform on transverse moving slide rail, and secondary arrangement platform includes vacuum platform and the arrangement block of setting in the four sides of vacuum platform, and arrangement block can move along the width direction and length direction of vacuum platform.The utility model discloses through secondary arrangement platform respectively to lead frame carries out preliminary arrangement and accurate arrangement, and through vacuum platform carries out position fixation, realizes the film of sticking on transverse moving slide rail.The utility model discloses through accurate positioning arrangement, has guaranteed the film quality of lead frame.

Description

Technical Field

[0001] This utility model belongs to the technical field of semiconductor packaging and testing equipment, and in particular relates to a lead frame sorting device for precise positioning of lead frames. Background Technology

[0002] To prevent resin from squeezing out and leaking through the gaps in the leadframe during the molding process, which could lead to defective products, a film-coating process is required on the back of the leadframe. The placement of the film directly affects the quality of the leadframe package. Therefore, before applying the film, the leadframe needs to be prepared and precisely positioned to ensure accurate film application. Summary of the Invention

[0003] The purpose of this invention is to provide a lead frame organizing device that can accurately organize and position the lead frame in order to meet the requirements of precise film application.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: A lead frame sorting device is characterized by comprising a feeding gripper and a discharging gripper disposed on both sides, the feeding gripper and the discharging gripper being mounted on a longitudinal moving slide rail and moving along the longitudinal moving slide rail; a primary sorting platform is disposed on one side of the feeding gripper, the primary sorting platform having length adjustment baffles and width adjustment baffles on its four sides driven by a drive mechanism; a transverse moving slide rail is disposed between the feeding gripper and the discharging gripper, the transverse moving slide rail having a secondary sorting platform disposed on the transverse moving slide rail, the secondary sorting platform including a vacuum platform and sorting blocks disposed on the four sides of the vacuum platform, the sorting blocks being movable along the width and length directions of the vacuum platform. The feeding gripper picks up the lead frame and places it on the primary sorting platform for initial sorting. The initially sorted lead frame is then picked up again and placed on the secondary sorting platform for secondary precise sorting and positioning, and a film is applied on the transverse moving slide rail, after which it is picked up by the discharging gripper and discharged.

[0005] Its further features are as follows: the loading gripper and the unloading gripper are symmetrically arranged; the longitudinal moving slide rail is fixed on the first base; the loading gripper and the unloading gripper are respectively fixed on the longitudinal moving slide rail through the cylinder connecting plate; the loading gripper and the unloading gripper respectively include a gripper lifting cylinder and a suction nozzle; the gripper lifting cylinder is fixed on the cylinder connecting plate; the suction nozzle is fixed on the gripper lifting cylinder through the suction nozzle fixing plate.

[0006] A further feature is that the primary sorting platform includes a third base, a primary positioning plate, a length adjusting baffle, and a width adjusting baffle; the length adjusting baffle is driven to move by a length adjusting cylinder mounted on the length adjusting baffle; the width adjusting baffle is driven to move by a width adjusting cylinder mounted on the width adjusting baffle; the width adjusting baffles on both sides are respectively connected to width adjusting screws. The lead frame is limited on the primary sorting platform by the length adjusting baffle and the width adjusting baffle, achieving initial sorting.

[0007] Preferably, the secondary sorting platform includes a second base and frustum-shaped cams on both sides of the second base; a lifting cylinder is provided in the hollowed-out position in the middle of the second base, and a lifting base plate is fixed to the lifting cylinder; the sorting block is installed on the sorting fixing block and can move back and forth on the sorting fixing block under the action of the elastic mechanism, with the front end of the sorting block close to the cam; the sorting fixing block is fixed to the lifting base plate. The lifting cylinder drives the lifting base plate to rise, and the sorting block rises along the surface of the frustum-shaped cam while retracting inward, and the top contacts the vacuum platform, restricting the lead frame within the notch shape of the vacuum platform. The vacuum platform activates vacuum to hold the lead frame for precise positioning.

[0008] Preferably, the second base is provided with multiple floating columns, and the lifting base plate moves up and down guided by the floating columns; the vacuum platform is located above the lifting base plate and is fixed to the intermediate plate, and the intermediate plate is fixed to the connecting column.

[0009] Preferably, two transverse sliding rails are arranged in parallel between the feeding gripper and the unloading gripper, and a secondary sorting platform is respectively arranged on each of the two transverse sliding rails. The two secondary sorting platforms arranged on the two parallel transverse sliding rails work alternately to improve the efficiency of sorting and film application of the lead frame.

[0010] This invention utilizes a two-stage sorting platform for preliminary and precise sorting of the lead frame, followed by positioning via a vacuum platform and film application on a lateral sliding rail. This precise positioning and sorting ensures the quality of the film application on the lead frame. Attached Figure Description

[0011] Figure 1 is a schematic diagram of the structure of this utility model.

[0012] Figure 2 is a schematic diagram of the feeding gripper and the unloading gripper.

[0013] Figure 3 is a schematic diagram of the primary sorting platform structure.

[0014] Figures 4 and 5 are schematic diagrams of the secondary sorting platform structure. Detailed Implementation

[0015] like Figure 1As shown, a lead frame sorting device includes a feeding gripper 2 and a discharging gripper 3 disposed on both sides. The feeding gripper 2 and the discharging gripper 3 are mounted on a longitudinal moving slide rail 302 and move along the longitudinal moving slide rail 302. A primary sorting platform 4 is disposed on one side of the feeding gripper 2. The primary sorting platform 4 has length adjusting baffles 402 and width adjusting baffles 403 on its four sides, which are driven to move by a driving mechanism. Two transverse moving slide rails 5 are arranged parallel to each other between the feeding gripper 2 and the discharging gripper 3. A secondary sorting platform 1 is disposed on each of the transverse moving slide rails 5. The secondary sorting platform 1 includes a vacuum platform 103 and sorting blocks 203 disposed on the four sides of the vacuum platform 103. The sorting blocks 203 can move along the width and length directions of the vacuum platform 103.

[0016] like Figure 1 , 2 As shown, the loading gripper 2 and the unloading gripper 3 are symmetrically arranged. A longitudinal moving slide rail 302 is fixed to the first base 301. The loading gripper 2 and the unloading gripper 3 are respectively fixed to the longitudinal moving slide rail 302 via a cylinder connecting plate 303; the loading gripper 2 and the unloading gripper 3 each include a gripper lifting cylinder 304 and a suction nozzle 306. The gripper lifting cylinder 304 is fixed to the cylinder connecting plate 303; the suction nozzle 306 is fixed to the gripper lifting cylinder 304 via a suction nozzle fixing plate 305.

[0017] like Figure 3 As shown, the primary sorting platform includes a third base 401, a primary positioning plate 407, a length adjusting baffle 402, and a width adjusting baffle 403. The length adjusting baffle 402 is driven to move by a length adjusting cylinder 405 mounted on it. The width adjusting baffle 403 is driven to move by a width adjusting cylinder 406 mounted on it. The width adjusting baffles 403 on both sides are respectively connected to width adjusting screws 404.

[0018] like Figure 4 , 5 As shown, the secondary sorting platform 1 includes a second base 101 and frustum-shaped cams 206 disposed on both sides of the second base 101; a lifting cylinder 201 is disposed in the hollowed-out position in the middle of the second base 101, and a lifting base plate 202 is fixed to the lifting cylinder 201. A sorting block 203 is mounted on a sorting fixing block 207 and can move back and forth on the sorting fixing block 207 under the action of a spring mechanism; the front end of the sorting block 203 is in close contact with the cam 206; the sorting fixing block 207 is fixed to the lifting base plate 202. Multiple floating columns 205 are disposed on the second base 101, and the lifting base plate 202 moves up and down guided by the floating columns 205. A vacuum platform 103 is located above the lifting base plate 202 and is fixed to an intermediate plate 105, which is fixed to a connecting column 102.

[0019] When this utility model is in operation, the lifting cylinder 304 of the feeding gripper 2 descends, the suction nozzle 306 picks up the lead wire frame, and the lifting cylinder 304 rises. The longitudinal moving slide rail 302 drives the lifting cylinder 304 to move above the first-stage sorting platform 4. After stabilization, the lifting cylinder 304 descends, the suction nozzle 306 breaks the vacuum and places the lead wire frame on the first-stage positioning plate 407. Then the lifting cylinder 304 rises, the length sorting cylinder 405 and the width sorting cylinder 406 move to restrict the frame within the range of the first-stage positioning plate 407. Then the lifting cylinder 304 descends, the suction nozzle picks up the lead wire frame, and the lifting cylinder 304 rises. The longitudinal moving slide rail 302 drives the gripper to move above the second-stage sorting platform 1. The lifting cylinder 304 descends and places the lead wire frame on the vacuum platform 103. Finally, a precise sorting action is performed.

[0020] The lifting cylinder 201 is initially in a retracted state, causing the lifting base plate 202 to descend. During the descent, the tidying block 203 adheres to the surface of the cam 206. By moving within the tidying fixing block 207, the tidying mechanism is in an open state. After the gripper places the lead frame onto the vacuum platform 103, the lifting cylinder 201 causes the lifting base plate 202 to rise. During the rising process, the tidying block 203 retracts, and the top of the tidying block 203 contacts the vacuum platform 103, confining the lead frame within the notch shape of the vacuum platform 103. The vacuum platform 103 then activates a vacuum to hold the lead frame in place.

[0021] After precise positioning, the lead frame moves along the transverse sliding rail 5 for film application. The film-applied lead frame then moves along the transverse sliding rail 5 on the vacuum platform 103 to the unloading gripper 3, at which point the vacuum is closed. The unloading gripper 3 then picks up the lead frame and discharges it.

Claims

1. A lead frame organizing device, characterized in that: It includes a loading gripper (2) and a unloading gripper (3) on both sides. The loading gripper (2) and the unloading gripper (3) are mounted on a longitudinal moving slide rail (302) and move along the longitudinal moving slide rail (302). A primary sorting platform (4) is provided on one side of the loading gripper (2). The primary sorting platform (4) is provided with a length adjustment baffle (402) and a width adjustment baffle (403) driven by a drive mechanism on its four sides. A transverse moving slide rail (5) is provided between the loading gripper (2) and the unloading gripper (3). A secondary sorting platform (1) is provided on the transverse moving slide rail (5). The secondary sorting platform (1) includes a vacuum platform (103) and sorting blocks (203) on the four sides of the vacuum platform (103). The sorting blocks (203) can move along the width and length directions of the vacuum platform (103).

2. The lead frame organizing device as described in claim 1, characterized in that: The loading gripper (2) and unloading gripper (3) are symmetrically arranged; the longitudinal moving slide rail (302) is fixed on the first base (301); the loading gripper (2) and unloading gripper (3) are respectively fixed on the longitudinal moving slide rail (302) through the cylinder connecting plate (303); the loading gripper (2) and unloading gripper (3) respectively include a gripper lifting cylinder (304) and a suction nozzle (306); the gripper lifting cylinder (304) is fixed on the cylinder connecting plate (303); the suction nozzle (306) is fixed on the gripper lifting cylinder (304) through the suction nozzle fixing plate (305).

3. The lead frame organizing device as described in claim 1, characterized in that: The primary sorting platform includes a third base (401), a primary positioning plate (407), a length adjustment baffle (402), and a width adjustment baffle (403); the length adjustment baffle (402) is driven to move by a length sorting cylinder (405) set on the length adjustment baffle (402); the width adjustment baffle (403) is driven to move by a width sorting cylinder (406) set on the width adjustment baffle (403); the width adjustment baffles (403) on both sides are respectively connected to the width adjustment screw (404).

4. The lead frame organizing device as described in any one of claims 1-3, characterized in that: The secondary sorting platform includes a second base (101) and frustum-shaped cams (206) on both sides of the second base (101); a lifting cylinder (201) is provided in the hollow position in the middle of the second base (101), and a lifting base plate (202) is fixed on the lifting cylinder (201); the sorting block (203) is installed on the sorting fixing block (207), and can move back and forth on the sorting fixing block (207) under the action of the elastic mechanism, with the front end of the sorting block (203) close to the cam (206); the sorting fixing block (207) is fixed on the lifting base plate (202).

5. The lead frame organizing device as described in claim 4, characterized in that: The second base (101) is provided with multiple floating columns (205), and the lifting base plate (202) moves up and down guided by the floating columns (205); the vacuum platform (103) is located above the lifting base plate (202) and is fixed on the intermediate plate (105), and the intermediate plate (105) is fixed on the connecting column (102).

6. The lead frame organizing device as described in any one of claims 1-3, characterized in that: Two transverse sliding rails (5) are arranged in parallel between the loading gripper (2) and the unloading gripper (3), and a secondary sorting platform (1) is respectively arranged on the two transverse sliding rails (5).

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