Lead frame pushing device

Abstract

The utility model relates to the technical field of lead frame processing, and discloses a lead frame pushing device which comprises a base, a working table is installed on the upper portion of the base, a pushing plate is arranged on the working table, and a brush plate is arranged on the upper portion of the working table. According to the utility model, the first reciprocating screw rod rotates, so that the movable plate drives the push plate to move along the first reciprocating screw rod, the lead frame is pushed to the conveying platform from the workbench, the first reciprocating screw rod drives the first gear to rotate, the second gear drives the second reciprocating screw rod to rotate, and the brush plate moves along the second reciprocating screw rod; when a lead frame is pushed, dust on the surface of the lead frame on the workbench is cleaned, when a next lead frame is pushed, the push plate returns to the initial position, the brush plate also returns to the initial position, the brush plate can clean the dust on the surface of the workbench, manual cleaning is not needed, the workload is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lead frame processing, in particular to a lead frame pushing device. Background Art

[0002] The lead frame is a key component in semiconductor packaging. It is a metal structure used to fix the semiconductor chip and connect its internal circuit to the external circuit. During the packaging process, the semiconductor chip will be mounted on the chip pad of the lead frame, and then connected to the pin of the lead frame through a gold wire or an aluminum wire to form an electrical connection. The lead frame needs to be pushed by a pushing device during production to perform the next step of processing on the lead frame. The existing lead frame pushing device (publication number: CN 213124403 U) has at least the following disadvantages in use:

[0003] The dust on the surface of the lead frame can be cleaned with a brush. Since the dust cleaned with the brush will fall on the workbench, the subsequent lead frames may be adhered with dust during the process of the push plate pushing the lead frame, and the workbench needs to be manually cleaned, which increases the workload and reduces the work efficiency.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] In view of this, the purpose of the utility model is to propose a lead frame pushing device to solve the problem that dust on the surface of the lead frame can be cleaned by a brush. Since the dust cleaned by the brush will fall on the workbench, the subsequent lead frames may be adhered with dust during the process of the push plate pushing the lead frame, and the workbench needs to be manually cleaned, which increases the workload and reduces the work efficiency.

[0006] Based on the above purpose, the utility model provides a lead frame pushing device.

[0007] The lead frame pushing device comprises a base, an electric push rod is installed on the upper part of the base, a workbench is installed on the output end of the electric push rod, a motor is installed on one side of the workbench, a first reciprocating screw is installed on the output end of the motor, one end of the first reciprocating screw passes through the workbench and is rotatably connected to it, a push plate is provided on the workbench, a movable plate is fixedly connected to the lower part of the push plate, one end of the first reciprocating screw passes through the movable plate and is threadedly connected to it, a brush plate is provided on the upper part of the workbench, a linkage mechanism is provided between the first reciprocating screw and the brush plate, and the linkage mechanism is used to move the brush plate.

[0008] As a preferred embodiment of the utility model, the linkage mechanism includes a second reciprocating screw, one end of the second reciprocating screw passes through the workbench and is rotatably connected thereto, one end of the second reciprocating screw passes through the brush plate and is threadedly connected thereto, one end of the first reciprocating screw is fixedly sleeved with a first gear, one end of the second reciprocating screw is fixedly sleeved with a second gear, and the first gear is meshed with the second gear.

[0009] As a preferred embodiment of the utility model, a first guide rod is fixedly connected in the workbench, one end of the first guide rod passes through the movable plate and is slidably connected thereto, two first sliding grooves are provided on the workbench, and the two ends of the movable plate slide in the corresponding first sliding grooves respectively, and second sliding grooves are provided on the inner walls on both sides of the workbench, and first sliders are fixedly connected on both sides of the movable plate, and the two first sliders slide in the corresponding second sliding grooves respectively.

[0010] As a preferred embodiment of the utility model, a fourth guide rod is fixedly connected in the workbench, one end of the fourth guide rod passes through the brush plate and is slidably connected thereto, fourth sliding grooves are provided at both ends of one side of the workbench, and third sliding blocks are fixedly connected at both ends of one side of the brush plate, and the two third sliding blocks slide in the corresponding fourth sliding grooves respectively.

[0011] As a preferred embodiment of the utility model, a connecting plate is provided on one side of the movable plate, and second guide rods are fixedly connected at both ends of one side of the movable plate, one end of the two second guide rods passes through the connecting plate and is slidably connected thereto, a first spring is sleeved on the second guide rods, an extension plate is provided on the upper part of the connecting plate, the extension plate is adapted to the workbench, third guide rods are fixedly connected at both ends of one side of the extension plate, one end of the two third guide rods passes through the connecting plate and is slidably connected thereto, and a second spring is sleeved on the third guide rods.

[0012] As a preferred embodiment of the utility model, third sliding grooves are provided on the inner walls on both sides of the workbench, and second sliding blocks are fixedly connected to both sides of the extension plate, and two of the second sliding blocks slide in the corresponding third sliding grooves respectively.

[0013] As a preferred embodiment of the utility model, a lifting plate is provided at the lower part of the workbench, the lifting plate is installed at the output end of the electric push rod, two connecting rods are fixedly connected at both ends of one side of the lifting plate, the other ends of multiple connecting rods are fixedly connected to the workbench, and multiple universal wheels are installed at the lower part of the base.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model starts the motor and the first reciprocating screw rotates, so that the moving plate brings the pushing plate to move along the first reciprocating screw, and the lead frame is pushed from the workbench to the conveying platform. The first reciprocating screw drives the first gear to rotate, and the second gear drives the second reciprocating screw to rotate, so that the brush plate moves along the second reciprocating screw to clean the dust on the surface of the lead frame on the workbench. When the next lead frame is pushed, the pushing plate returns to the initial position, and the brush plate also returns to the initial position. The brush plate can clean the dust on the surface of the workbench without manual cleaning, thereby reducing workload and improving work efficiency.

[0016] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the attached picture:

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the lead frame pushing device proposed by the utility model;

[0019] Figure 2 A schematic diagram of the three-dimensional structure of the lifting plate of the lead frame pushing device proposed by the utility model;

[0020] Figure 3 A schematic diagram of the three-dimensional structure of a push plate of a lead frame pushing device proposed in the utility model;

[0021] Figure 4 A schematic diagram of the three-dimensional structure of a moving plate of a lead frame pushing device proposed by the utility model;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the extension plate of the lead frame pushing device proposed by the utility model;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the brush plate of the lead frame pushing device proposed by the utility model;

[0024] Figure 7 This is a schematic diagram of the cross-sectional structure of the workbench of the lead frame pushing device proposed by the utility model;

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the fourth slide slot of the lead frame pushing device proposed by the utility model.

[0026] In the figure: 1. base; 2. workbench; 3. electric push rod; 4. universal wheel; 5. motor; 6. push plate; 7. brush plate; 8. lifting plate; 9. connecting rod; 10. moving plate; 11. extension plate; 12. first reciprocating screw rod; 13. second reciprocating screw rod; 14. first gear; 15. second gear; 16. first guide rod; 17. connecting plate; 18. second guide rod; 19. first spring; 20. third guide rod; 21. second spring; 22. first slider; 23. second slider; 24. fourth guide rod; 25. third slider; 26. first slide groove; 27. second slide groove; 28. third slide groove; 29. ​​fourth slide groove. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0028] like Figures 1 to 8As shown, the lead frame pushing device includes a base 1, an electric push rod 3 is installed on the upper part of the base 1, a workbench 2 is installed on the output end of the electric push rod 3, a motor 5 is installed on one side of the workbench 2, a first reciprocating screw rod 12 is installed on the output end of the motor 5, one end of the first reciprocating screw rod 12 passes through the workbench 2 and is rotatably connected thereto, a push plate 6 is provided on the workbench 2, a moving plate 10 is fixedly connected to the lower part of the push plate 6, one end of the first reciprocating screw rod 12 passes through the moving plate 10 and is threadedly connected thereto, a brush plate 7 is provided on the upper part of the workbench 2, a linkage mechanism is provided between the first reciprocating screw rod 12 and the brush plate 7, and the linkage mechanism Used to move the brush plate 7, the linkage mechanism includes a second reciprocating screw rod 13, one end of the second reciprocating screw rod 13 passes through the workbench 2 and is rotatably connected thereto, one end of the second reciprocating screw rod 13 passes through the brush plate 7 and is threadedly connected thereto, one end of the first reciprocating screw rod 12 is fixedly sleeved with a first gear 14, one end of the second reciprocating screw rod 13 is fixedly sleeved with a second gear 15, the first gear 14 is meshed with the second gear 15, a first guide rod 16 is fixedly connected inside the workbench 2, one end of the first guide rod 16 passes through the moving plate 10 and is slidably connected thereto, two first slide grooves 26 are provided on the workbench 2, and the moving plate 10, both ends slide in the corresponding first slide grooves 26, the inner walls on both sides of the workbench 2 are provided with second slide grooves 27, both sides of the movable plate 10 are fixedly connected with first sliders 22, the two first sliders 22 slide in the corresponding second slide grooves 27, a fourth guide rod 24 is fixedly connected in the workbench 2, one end of the fourth guide rod 24 passes through the brush plate 7 and is slidably connected thereto, fourth slide grooves 29 are provided at both ends of one side of the workbench 2, and the third sliders 25 are fixedly connected at both ends of one side of the brush plate 7, the two third sliders 25 slide in the corresponding fourth slide grooves 29, and the lower part of the workbench 2 A lifting plate 8 is provided, and the lifting plate 8 is installed at the output end of the electric push rod 3. Two connecting rods 9 are fixedly connected to both ends of one side of the lifting plate 8, and the other ends of multiple connecting rods 9 are fixedly connected to the workbench 2. Multiple universal wheels 4 are installed at the lower part of the base 1. The first reciprocating screw 12 rotates, so that the moving plate 10 drives the pushing plate 6 to move, and pushes the lead frame. The first gear 14 drives the second gear 15 to rotate, and the second reciprocating screw 13 rotates accordingly, so that the brush plate 7 cleans the dust on the surface of the lead frame. The brush plate 7 returns to the initial position, and the dust on the surface of the workbench 2 can be cleaned.

[0029] A connecting plate 17 is provided on one side of the movable plate 10, and both ends of one side of the movable plate 10 are fixedly connected with a second guide rod 18, one end of the two second guide rods 18 penetrates the connecting plate 17 and is slidably connected thereto, and a first spring 19 is sleeved on the second guide rod 18, and an extension plate 11 is provided on the upper part of the connecting plate 17, and the extension plate 11 is adapted to the workbench 2, and both ends of one side of the extension plate 11 are fixedly connected with a third guide rod 20, one end of the two third guide rods 20 penetrates the connecting plate 17 and is slidably connected thereto, and a second spring 21 is sleeved on the third guide rod 20, and the workbench 2 is provided with a second spring 21. A third slide groove 28 is provided on the inner walls on both sides of the table 2, and a second slider 23 is fixedly connected to both sides of the extension plate 11. The two second sliders 23 slide in the corresponding third slide grooves 28 respectively. Notches are provided at both ends of the workbench 2 to facilitate dust falling. The movable plate 10 moves with the connecting plate 17, and the extension plate 11 moves therewith. A bending portion is provided at one end of the third slide groove 28. Through the limitation of the second slider 23, the extension plate 11 moves along the third slide groove 28 and keeps in contact with the workbench 2, so as to prevent the lead frame from falling from the notch and facilitate the lead frame to be pushed onto the conveying platform.

[0030] The implementation principle of the lead frame pushing device of this embodiment is as follows:

[0031] When in use, the device is moved to the side of the conveying platform by the universal wheel 4, the electric push rod 3 is started, the workbench 2 is adjusted to a suitable height, the motor 5 is started, the first reciprocating screw 12 rotates, the moving plate 10 drives the push plate 6 to move, the push plate 6 pushes the lead frame from the workbench 2 to the conveying platform, the moving plate 10 drives the connecting plate 17 to move together, and the extension plate 11 moves along, and a bending portion is provided at one end of the third slide groove 28, so that the second sliders 23 on both sides of the extension plate 11 pass through the limit of the third slide groove 28, and the extension plate 11 is aligned with the workbench. 2 one end is kept in contact, so that the lead frame is pushed from the workbench 2 to the conveying platform, the moving plate 10 squeezes the first spring 19 and continues to move with the push plate 6, and all the lead frames are pushed out of the workbench 2, the first reciprocating screw rod 12 drives the first gear 14 to rotate, and the second gear 15 drives the second reciprocating screw rod 13 to rotate, so that the brush plate 7 moves along the second reciprocating screw rod 13 to clean the dust on the surface of the lead frame, and after pushing is completed, the push plate 6 and the brush plate 7 return to the initial position, and the brush plate 7 can clean the dust on the surface of the workbench 2.

Claims

1. A lead frame pushing device, comprising a base (1), characterized in that: An electric push rod (3) is mounted on the upper part of the base (1), a workbench (2) is mounted on the output end of the electric push rod (3), a motor (5) is mounted on one side of the workbench (2), a first reciprocating screw rod (12) is mounted on the output end of the motor (5), one end of the first reciprocating screw rod (12) passes through the workbench (2) and is rotatably connected thereto, a push plate (6) is provided on the workbench (2), a moving plate (10) is fixedly connected to the lower part of the push plate (6), one end of the first reciprocating screw rod (12) passes through the moving plate (10) and is threadedly connected thereto, a brush plate (7) is provided on the upper part of the workbench (2), a linkage mechanism is provided between the first reciprocating screw rod (12) and the brush plate (7), and the linkage mechanism is used to move the brush plate (7).

2. The lead frame pushing device according to claim 1, characterized in that: The linkage mechanism comprises a second reciprocating screw (13), one end of the second reciprocating screw (13) passes through the workbench (2) and is rotatably connected thereto, one end of the second reciprocating screw (13) passes through the brush plate (7) and is threadedly connected thereto, one end of the first reciprocating screw (12) is fixedly sleeved with a first gear (14), one end of the second reciprocating screw (13) is fixedly sleeved with a second gear (15), and the first gear (14) is meshed with the second gear (15).

3. The lead frame pushing device according to claim 2, characterized in that: A first guide rod (16) is fixedly connected inside the workbench (2), one end of the first guide rod (16) passes through the movable plate (10) and is slidably connected thereto, two first slide grooves (26) are provided on the workbench (2), two ends of the movable plate (10) respectively slide in the corresponding first slide grooves (26), second slide grooves (27) are provided on the inner walls of both sides of the workbench (2), first sliders (22) are fixedly connected to both sides of the movable plate (10), and the two first sliders (22) respectively slide in the corresponding second slide grooves (27).

4. The lead frame pushing device according to claim 3, characterized in that: A fourth guide rod (24) is fixedly connected inside the workbench (2), one end of the fourth guide rod (24) passes through the brush plate (7) and is slidably connected thereto, fourth slide grooves (29) are provided at both ends of one side of the workbench (2), and third slide blocks (25) are fixedly connected at both ends of one side of the brush plate (7), and two third slide blocks (25) slide in corresponding fourth slide grooves (29) respectively.

5. The lead frame pushing device according to claim 4, characterized in that: A connecting plate (17) is provided on one side of the movable plate (10), and second guide rods (18) are fixedly connected at both ends of one side of the movable plate (10), one end of the two second guide rods (18) penetrates the connecting plate (17) and is slidably connected thereto, and a first spring (19) is sleeved on the second guide rod (18). An extension plate (11) is provided on the upper part of the connecting plate (17), and the extension plate (11) is adapted to the workbench (2), and third guide rods (20) are fixedly connected at both ends of one side of the extension plate (11), one end of the two third guide rods (20) penetrates the connecting plate (17) and is slidably connected thereto, and a second spring (21) is sleeved on the third guide rod (20).

6. The lead frame pushing device according to claim 5, characterized in that: The inner walls on both sides of the workbench (2) are provided with third sliding grooves (28), and the two sides of the extension plate (11) are fixedly connected with second sliding blocks (23), and the two second sliding blocks (23) slide in the corresponding third sliding grooves (28) respectively.

7. The lead frame pushing device according to claim 1, characterized in that: A lifting plate (8) is provided at the bottom of the workbench (2), the lifting plate (8) being mounted on the output end of the electric push rod (3), two connecting rods (9) being fixedly connected to both ends of one side of the lifting plate (8), the other ends of the plurality of connecting rods (9) being fixedly connected to the workbench (2), and a plurality of universal wheels (4) being mounted at the bottom of the base (1).

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