Lead frame plating tank

Abstract

The utility model relates to the field of lead frames, and discloses a lead frame plating bath. Comprising a tank body, a plating solution mechanism is installed on the rear portion of the tank body, a protection mechanism is installed on the top of the tank body, the plating solution mechanism comprises a lifting seat, the lifting seat is fixedly installed on the rear portion of the tank body, a hydraulic cylinder is installed at the position, close to the bottom end, in the lifting seat, and lifting rails are installed in the two sides of the lifting seat; a lifting block is installed at the top end of a telescopic rod of the hydraulic cylinder, and a motor is installed on the rear portion of the lifting block. Through rotation of the two positioning seats and the rotating plate, fixing, taking and placing of a lead frame are facilitated, adaptive adjustment can be conducted on frame pins of different lengths and tin liquid of different liquid levels, the lead frame is taken and placed while liquid plating is conducted, and the working efficiency is improved; through opening and closing of the cover plate and the through groove, protection can be provided in the lead frame liquid plating and taking and placing processes, internal sealing is improved, and diffusion of internal volatile gas is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lead frame, concretely to a lead frame plating groove. BACKGROUND

[0002] The lead frame is a key component in semiconductor packaging, mainly used for packaging of integrated circuit chips. In the production and processing process, tinning needs to be carried out at the lead pins of the lead frame to enable the lead pins to be better soldered to the pads on the printed circuit board.

[0003] For example, the patent with the announcement number CN220056993U provides a lead frame aqueduct, which comprises a main plate, one end of the main plate is provided with a motor, the output end of the motor penetrates through one side of the main plate and is fixedly provided with a threaded rod, and a moving block is threadedly connected to the outer wall of the threaded rod. Through the setting of the electric push rod and the clamping plate.

[0004] The above-mentioned lead frame aqueduct avoids the problem of time and labor consumption of manual tinning, but the lead frame needs to be fixed in turn during plating, which reduces the overall working efficiency, makes the plating liquid uneven, and tin liquid is easy to evaporate during the plating process, which is not convenient to provide protection. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a lead frame plating groove to solve the technical problems in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A lead frame plating groove, comprising a groove body, a plating liquid mechanism is installed at the rear part of the groove body, a protection mechanism is installed at the top of the groove body, the plating liquid mechanism comprises a lifting seat, the lifting seat is fixedly installed at the rear part of the groove body, a hydraulic cylinder is installed at the inside of the lifting seat near the bottom end, lifting rails are installed at the inside of both sides of the lifting seat, a lifting block is installed at the top end of the telescopic rod of the hydraulic cylinder, a motor is installed at the rear part of the lifting block, an axle sleeve is fixedly installed at the front part of the lifting block, the output shaft of the motor is located in the inside of the axle sleeve, a rotating plate is fixedly installed at the front end of the output shaft of the motor, positioning seats are fixedly installed at both ends of the rotating plate, a screw rod is movably installed in the inside of the positioning seat, and a positioning plate is movably installed on the outside of the screw rod.

[0008] Preferably, the lifting block and the top end of the telescopic rod of the hydraulic cylinder are fixedly installed, and the lifting block is arranged to slide up and down in the lifting seat.

[0009] Preferably, the output shaft of the motor is arranged to rotate in the inside of the lifting block and the axle sleeve, and the two positioning seats are symmetrically arranged.

[0010] Preferably, the top rear end of the positioning seat is fixedly provided with the same positioning plate, and the screw rod is in threaded connection with the external positioning plate.

[0011] Preferably, the protection mechanism comprises a top plate covering the top of the groove body, a through groove is formed in the middle of the top of the top plate, guide rails are fixedly installed on the top rear end of the top plate, a sliding groove is formed in the inner side of the guide rail, pneumatic pumps are installed at both ends of the top plate, and a cover plate is installed at the inner end of the telescopic rod of the pneumatic pump and between the two guide rails.

[0012] Preferably, a groove is formed in the inner side of the cover plate, and the groove between the two cover plates is used for clamping the outer part of the rotating plate.

[0013] Preferably, the two cover plates are matched with each other on the top of the through groove, and the cover plates are slidably arranged between the two guide rails.

[0014] Compared with the prior art, the lead frame plating tank has the following beneficial effects:

[0015] 1) The lead frame plating tank is provided with a plating liquid mechanism, the screw rod drives the positioning plate to slide, the two positioning seats and the positioning plate are used for fixing the lead frame, the lifting block is driven by the hydraulic cylinder to lift, the height of the plating liquid is adjusted, the frame lead of different lengths and the tin liquid of different liquid levels can be adjusted, the rotating plate is driven by the motor to rotate, the two positioning seats are alternately rotated, the lead frame can be taken and placed at the same time as the plating liquid, and the working efficiency is improved.

[0016] 2) The lead frame plating tank is provided with a protection mechanism, the cover plate is driven by the pneumatic pump to slide in and out, the through groove is opened or closed, protection is provided during the plating and taking and placing of the lead frame, the sealing of the interior is improved, and the diffusion of the volatile gas in the interior is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the lead frame plating tank of the utility model embodiment;

[0018] Figure 2 It is a structure schematic view of the plating liquid mechanism in the utility model embodiment;

[0019] Figure 3 It is a rear structure schematic view of the plating liquid mechanism in the utility model embodiment;

[0020] Figure 4 It is a structure schematic view of the protection mechanism in the utility model embodiment.

[0021] As shown in the figure: 1, groove body; 2, plating solution mechanism; 3, protection mechanism; 4, lifting seat; 5, hydraulic cylinder; 6, lifting rail; 7, lifting block; 8, motor; 9, shaft sleeve; 10, rotating plate; 11, positioning seat; 12, screw; 13, positioning plate; 14, top plate; 15, through slot; 16, guide rail; 17, sliding groove; 18, pneumatic pump; 19, cover plate. DETAILED DESCRIPTION

[0022] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Embodiment one

[0024] In combination Figures 1-4 A lead frame plating tank, comprising a groove body 1, a plating solution mechanism 2 is installed at the rear of the groove body 1, and a protection mechanism 3 is installed at the top of the groove body 1.

[0025] In combination Figure 2 And Figure 3 Further, the plating solution mechanism 2 comprises a lifting seat 4, the lifting seat 4 is fixedly installed at the rear of the groove body 1, a hydraulic cylinder 5 is installed at the bottom end inside the lifting seat 4, lifting rails 6 are installed inside the two sides of the lifting seat 4, a lifting block 7 is installed at the top end of the telescopic rod of the hydraulic cylinder 5, a motor 8 is installed at the rear of the lifting block 7, a shaft sleeve 9 is fixedly installed at the front of the lifting block 7, the output shaft of the motor 8 is located inside the shaft sleeve 9, a rotating plate 10 is fixedly installed at the front end of the output shaft of the motor 8, positioning seats 11 are fixedly installed at the two ends of the rotating plate 10, a screw 12 is movably installed inside the positioning seat 11, and a positioning plate 13 is movably installed outside the screw 12, and the motor 8 drives the rotating plate 10 to intermittently rotate once every 180 degrees.

[0026] The lifting block 7 and the top end of the telescopic rod of the hydraulic cylinder 5 are fixedly installed, the lifting block 7 is arranged to slide up and down in the lifting seat 4, the lifting block 7 is lifted by the hydraulic cylinder 5, and the height of the plating solution is adjusted.

[0027] The output shaft of the motor 8 is rotatably arranged inside the lifting block 7 and the shaft sleeve 9, the two positioning seats 11 are symmetrically arranged, and the motor 8 is used for driving the rotating plate 10 to rotate, so that the lead frames in the two positioning seats 11 are alternately plated.

[0028] The top rear end of the positioning seat 11 is fixedly provided with the same positioning plate 13, the screw rod 12 is in threaded connection with the external positioning plate 13, the screw rod 12 drives the positioning plate 13 to slide, and the two positioning plates 13 clamp and fix the lead frame.

[0029] Specifically, the lead frame is arranged on the positioning seat 11 and clamped and fixed by the positioning plate 13, the hydraulic cylinder 5 is used for adjusting the height of the frame pin plating liquid, the motor 8 drives the rotating plate 10 to rotate, the fixed lead frame is rotated into the tin liquid for plating, and meanwhile, the other positioning seat 11 is rotated to the top end to take and place the lead frame.

[0030] Embodiment two

[0031] Referring to Figure 4 On the basis of the embodiment one, it is further obtained that the protection mechanism 3 comprises a top plate 14, the top plate 14 covers the top of the groove body 1, a through groove 15 is arranged in the middle of the top of the top plate 14, guide rails 16 are fixedly arranged on the front and rear ends of the top of the top plate 14, sliding grooves 17 are arranged in the inner sides of the guide rails 16, pneumatic pumps 18 are arranged at the two ends of the top plate 14, and cover plates 19 are arranged at the inner ends of the telescopic rods of the pneumatic pumps 18 and between the two guide rails 16.

[0032] The inner sides of the cover plates 19 are provided with recesses, the recesses between the two cover plates 19 are used for clamping the outer sides of the rotating plate 10, the top plate 14 and the cover plate 19 are used for covering and protecting the groove body 1, and the through groove 15 is used for rotating the rotating plate 10.

[0033] The two cover plates 19 are matched with each other at the top of the through groove 15, the cover plates 19 are slidably arranged between the two guide rails 16, the cover plates 19 slide through the telescopic extension of the pneumatic pumps 18, the through groove 15 is opened or closed.

[0034] Specifically, the fixed lead frame is rotated into the groove body 1 through the rotating plate 10, the two pneumatic pumps 18 drive the two cover plates 19 to slide inward, the through groove 15 is closed, the diffusion of volatile gas is reduced, and protection is provided, the cover plates 19 slide outward after the plating is completed, and the two positioning seats 11 are alternately rotated.

[0035] In actual operation, the lead frame is fixed in the positioning seat 11, the output shaft of the motor 8 rotates in the shaft sleeve 9, the rotating plate 10 is alternately plated through rotation, and the cover plate 19 is used for opening and closing the through groove 15.

[0036] When plating, the lead frame is placed on the positioning seat 11, the positioning plate 13 is driven to slide by the screw rod 12, the two positioning plates 13 press and fix the lead frame, the lifting block 7 is driven to lift by the hydraulic cylinder 5, the height of the plating solution is adjusted, the lead frame pin is located in the tin solution, the fixed lead frame is rotated into the groove body 1 for plating by the motor 8 driving the rotating plate 10 to rotate, and the other positioning seat 11 is rotated to the top end for taking and fixing the lead frame, and the plating is carried out alternately;

[0037] When protecting, during the plating, the two cover plates 19 slide inwardly driven by the two pneumatic pumps 18, the rotating plate 10 is located in the groove on the inner side of the two cover plates 19, the through groove 15 is covered and sealed, the diffusion of the internal volatile gas is reduced, and protection is provided, and when rotating alternately after the plating is completed, the two cover plates 19 slide outwardly driven by the two pneumatic pumps 18, the through groove 15 is opened, and the rotating plate 10 can rotate alternately.

[0038] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A lead frame plating tank comprising a tank body (1), characterized in that: The back of the groove body (1) is provided with a plating solution mechanism (2), and the top of the groove body (1) is provided with a protection mechanism (3); The plating solution mechanism (2) comprises a lifting seat (4) fixedly installed at the back of the groove body (1), a hydraulic cylinder (5) installed at the bottom of the lifting seat (4), lifting rails (6) installed at both sides of the lifting seat (4), a lifting block (7) installed at the top of the hydraulic cylinder (5), a motor (8) installed at the back of the lifting block (7), a shaft sleeve (9) fixedly installed at the front of the lifting block (7), an output shaft of the motor (8) located in the shaft sleeve (9), a rotating plate (10) fixedly installed at the front end of the output shaft of the motor (8), positioning seats (11) fixedly installed at both ends of the rotating plate (10), and a screw rod (12) movably installed in the positioning seat (11) and a positioning plate (13) movably installed outside the screw rod (12).

2. The lead frame plating bath of claim 1, wherein: The lifting block (7) is fixedly installed at the top end of the telescopic rod of the hydraulic cylinder (5) and is arranged in the lifting seat (4) to slide up and down.

3. The lead frame plating cell of claim 1, wherein: The output shaft of the motor (8) is arranged to rotate in the lifting block (7) and the shaft sleeve (9), and the two positioning seats (11) are arranged symmetrically.

4. The lead frame plating cell of claim 1, wherein: The same positioning plate (13) is fixedly installed at the top of the back of the positioning seat (11), and the screw rod (12) is threadedly connected with the external positioning plate (13).

5. The lead frame plating cell of claim 1, wherein: The protection mechanism (3) comprises a top plate (14) covering the top of the groove body (1), a through slot (15) formed in the top of the top plate (14), guide rails (16) fixedly installed at the front and back of the top of the top plate (14), a sliding groove (17) formed in the inner side of the guide rail (16), pneumatic pumps (18) installed at both ends of the top plate (14), and a cover plate (19) installed at the inner end of the telescopic rod of the pneumatic pump (18) and between the two guide rails (16).

6. The lead frame plating cell of claim 5, wherein: The inner side of the cover plate (19) is provided with a groove, and the grooves between the two cover plates (19) are used for clamping the outside of the rotating plate (10).

7. The lead frame plating cell of claim 5, wherein: The two cover plates (19) are matched with each other at the top of the through slot (15), and the cover plates (19) are arranged to slide between the two guide rails (16).

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