Wide lead frame cleaning device

Abstract

The utility model discloses a wide lead frame cleaning device, which belongs to the technical field of lead frame production equipment and comprises a cleaning pool, a feed port and a discharge port are respectively arranged on the left side and the right side of the cleaning pool, a guide wheel is arranged on one side, close to the feed port, in the cleaning pool, and a high-pressure ejector and a sprayer are sequentially arranged on the right side of the guide wheel. A mounting frame is arranged on the right side of the sprayer, and a water absorption roller is arranged on the mounting frame. The high-pressure ejectors and the sprayers are arranged in the cleaning pool to clean the lead frame twice, pits in the surface of the lead frame are thoroughly cleaned, finally, the lead frame passes through the position between the two water absorption rollers, the water absorption cotton core rotates back and forth, residual water drops on the surface of the lead frame are absorbed, water brought out is reduced, and the service life of the lead frame is prolonged. And preliminarily drying the lead frame.

Description

Technical Field

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

[0002] After the lead frame is machined, its surface is changed from a smooth and flat surface to a regular square shallow pit surface (the purpose is to improve the fixation stability of the semiconductor chip), and a large amount of grease remains. It needs to be thoroughly degreased and cleaned to remove the oil stains on its surface.

[0003] At present, the traditional lead frame electroplating cleaning process uses high-temperature alkaline degreasing liquid immersion, and auxiliary matching ultrasonic waves to increase mechanical force, which can remove oil stains on the lead frame. The degreasing lead frame is then passed through a four-level water first, and the cleaning water is sprayed through a serpentine elbow to clean the alkaline degreasing liquid on the surface of the lead frame, so that the surface is clean. Because there are square shallow pits on the surface of the lead frame, water flows from the top to the bottom of the lead frame during spray cleaning, and the water pressure gradually weakens. The square shallow pits at the bottom of the wide lead frame cannot be rinsed clean, and a small amount of degreasing agent remains. This affects the bonding strength between the coating and the substrate during the subsequent electroplating process, and is prone to cause quality problems such as peeling and blistering. Summary of the invention

[0004] The utility model aims to provide a wide lead frame cleaning device to solve the problem that the existing cleaning method cannot clean the square shallow pit at the bottom of the wide lead frame, and a small amount of degreasing agent remains, which affects the product quality.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model discloses a wide lead frame cleaning device, comprising a cleaning pool, wherein a feed port and a discharge port are respectively arranged on the left and right sides of the cleaning pool, a guide wheel is arranged on one side of the cleaning pool close to the feed port, a high-pressure ejector and a sprayer are arranged in sequence on the right side of the guide wheel, a mounting frame is arranged on the right side of the sprayer, and a water absorption roller is arranged on the mounting frame.

[0007] Furthermore, a bracket is installed inside the cleaning tank, and the guide wheel is installed on the bracket.

[0008] Furthermore, the high-pressure injector is provided with two injection pipes, the two injection pipes are arranged symmetrically front to back, and a plurality of injection holes are provided on opposite surfaces of the two injection pipes.

[0009] Furthermore, the injection pipe is configured to be cylindrical.

[0010] Furthermore, the sprayer is provided with two spray pipes.

[0011] Furthermore, the spray pipe is configured as a serpentine flat-mouth spray pipe.

[0012] Furthermore, the number of the water-absorbing rollers is two, and the two water-absorbing rollers are arranged in parallel front and back.

[0013] Furthermore, the water-absorbing roller is provided with a water-absorbing cotton core.

[0014] Furthermore, bearings are installed on the upper and lower ends of the two water-absorbing rollers, and the upper and lower ends of the rear water-absorbing roller are rotatably connected to the top plate and the bottom plate through bearings, and the bearings of the front water-absorbing roller are installed on the bearing seat plate, and the top plate and the bottom plate are respectively provided with a second slide groove and a first slide groove, and the upper and lower bearing seat plates are respectively arranged in the second slide groove and the first slide groove.

[0015] Furthermore, a suction roller gap adjustment assembly is also provided on the mounting frame, and the suction roller gap adjustment assembly includes a suction roller gap adjustment plate, and an adjustment bolt is provided on the front side of the suction roller gap adjustment plate, and the adjustment bolt is threadedly connected to the front side plate and extends to the front side of the front side plate, and screws are connected to both sides of the upper bearing seat plate, and the screws extend to the outside of the top plate and are locked in place by butterfly nuts.

[0016] Compared with the prior art, the beneficial technical effects of the utility model are:

[0017] The utility model provides a high-pressure ejector and a sprayer in a cleaning pool to clean the lead frame twice, and thoroughly cleans the pits on the surface of the lead frame. Finally, the lead frame passes through two water-absorbing rollers, and the water-absorbing cotton core rotates back and forth to absorb the residual water drops on the surface of the lead frame, reduce the water brought out, and thoroughly clean the lead frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a wide lead frame cleaning device of the utility model;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of another angle of the wide lead frame cleaning device of the utility model;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the mounting frame and the water-absorbing roller of the utility model;

[0022] Figure 4 It is a cross-sectional view of the mounting frame and the water-absorbing roller of the utility model.

[0023] Explanation of the accompanying drawings: 1. cleaning tank; 101. feed port; 102. discharge port; 103. drain hole; 2. bracket; 3. guide wheel; 4. high-pressure ejector; 401. ejector pipe; 401-1. ejector hole; 5. sprayer; 501. spray pipe; 6. mounting frame; 601. bottom plate; 601-1. first slide chute; 602. top plate; 602-1. second slide chute; 603. front side plate; 7. suction roller; 8. lead frame; 9. suction roller gap adjustment plate; 10. adjustment bolt; 11. bearing; 12. bearing seat plate; 13. screw; 14. butterfly nut. DETAILED DESCRIPTION

[0024] like Figure 1-4 As shown, a wide lead frame cleaning device includes a cleaning pool 1, wherein a feed port 101 and a discharge port 102 are respectively provided on the left and right sides of the cleaning pool 1, a guide wheel 3 is provided on the side of the cleaning pool 1 close to the feed port 101, a high-pressure ejector 4 and a sprayer 5 are provided in sequence on the right side of the guide wheel 3, a mounting frame 6 is provided on the right side of the sprayer 5, and a water suction roller 7 is provided on the mounting frame 6.

[0025] Specifically, the feed port 101 is set to be a long strip, and the discharge port 102 can be set to be a long strip or a circle. The circular discharge port 102 facilitates the adjustment of the material belt from a vertical state to a horizontal state; the bottom surface of the cleaning pool 1 is also provided with a drainage hole 103 to facilitate the direct discharge of the waste water after cleaning.

[0026] A bracket 2 is installed inside the cleaning tank 1 , and the guide wheel 3 is installed on the bracket 2 .

[0027] The high-pressure sprayer 4 is connected to two spray tubes 401, which are symmetrically arranged front to back. The spray tubes 401 are set in a cylindrical shape, and a plurality of spray holes 401-1 are set on the opposite surfaces of the two spray tubes 401. When in use, the lead frame 8 passes through the middle of the two spray tubes 401, and high-pressure cleaning water is sprayed out from the spray holes 401-1. The high-pressure cleaning water can clean the square shallow pit at the bottom of the wide lead frame, thereby fully cleaning the lead frame 8.

[0028] The sprayer 5 is connected to two spray pipes 501, which are universal bamboo elbows and use 1 / 8-inch threaded water spray hoses, with a flat-mouthed spray head connected to the end. The material strip width of the wide lead frame is relatively large, and the spray range can be expanded by setting a serpentine flat-mouthed spray pipe. When in use, the two spray pipes 501 are located on the front and rear sides of the lead frame 8 to fully clean the lead frame 8.

[0029] There are two water-absorbing rollers 7, which are arranged in parallel front and back, and there are water-absorbing cotton cores on the water-absorbing rollers 7; after the lead frame 8 is cleaned by the high-pressure ejector 4 and the shower 5, a large amount of water is carried on its surface. At this time, the lead frame 8 passes between the two water-absorbing rollers 7, and when the lead frame 8 moves to the right, it drives the water-absorbing cotton core to rotate back and forth, absorbs the residual water droplets on the surface of the lead frame 8, and reduces the amount of water carried out.

[0030] like Figure 4 As shown, bearings 11 are installed on both upper and lower side ends of the two water-absorbing rollers 7, and the bearings 11 are micro ceramic bearings. The upper and lower ends of the rear water-absorbing roller 7 are rotatably connected with the top plate 602 and the bottom plate 601 through the bearings 11, and the bearings 11 of the front water-absorbing roller 7 are installed on the bearing seat plate 12. The top plate 602 and the bottom plate 601 are respectively provided with a second slide groove 602-1 and a first slide groove 601-1, and the upper and lower bearing seat plates 12 are respectively arranged in the second slide groove 602-1 and the first slide groove 601-1.

[0031] The mounting frame 6 is also provided with a suction roller gap adjustment assembly, which includes a suction roller gap adjustment plate 9, the front side of which is connected with an adjustment bolt 10, the adjustment bolt 10 is threadedly connected to the front side plate 603 and extends to the front side of the front side plate 603, and both sides of the upper bearing seat plate 12 are connected with screws 13, the screws 13 extend to the outside of the top plate 602 and are locked in place by butterfly nuts 14.

[0032] When in use, rotate the adjusting bolt 10, the adjusting bolt 10 pushes the suction roller gap adjusting plate 9 to move backward, and the suction roller gap adjusting plate 9 pushes the suction roller 7 on the front side, so that the front suction roller 7 moves backward, and the upper and lower bearing seat plates 12 slide backward along the second slide groove 602-1 and the first slide groove 601-1 respectively, and the gap between the two suction rollers 7 is reduced. When the gap is adjusted to a suitable position, tighten the butterfly nut 14 to fix the position of the upper bearing seat plate 12 to ensure that the gap size of the suction roller is stable.

[0033] The working process of the utility model is as follows:

[0034] First, the lead frame 8 enters the cleaning tank 1 from the feed port 101, and the bottom surface of the lead frame 8 contacts the guide wheel 3 for correction. Then, the lead frame 8 passes through the high-pressure ejector 4 and the sprayer 5 in sequence to clean the pits on the surface of the lead frame 8. Finally, the lead frame 8 passes between the two water-absorbing rollers 7. When the lead frame 8 moves to the right, it drives the absorbent cotton core to rotate back and forth, absorbs the residual water droplets on the surface of the lead frame 8, and reduces the amount of lead frame 8 to be carried out.

[0035] In the utility model, a lead frame pulling device is arranged on the right side of the cleaning tank 1, and the lead frame 8 moves rightward in the cleaning tank 1 under the pulling of the pulling device.

[0036] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A wide lead frame cleaning device, characterized in that: The invention comprises a cleaning pool (1), wherein a feed port (101) and a discharge port (102) are respectively arranged on the left and right sides of the cleaning pool (1), a guide wheel (3) is arranged on the side of the cleaning pool (1) close to the feed port (101), a high-pressure ejector (4) and a sprayer (5) are arranged in sequence on the right side of the guide wheel (3), a mounting frame (6) is arranged on the right side of the sprayer (5), and a water suction roller (7) is arranged on the mounting frame (6).

2. The wide lead frame cleaning device according to claim 1, characterized in that: A bracket (2) is installed inside the cleaning tank (1), and the guide wheel (3) is installed on the bracket (2).

3. The wide lead frame cleaning device according to claim 1, characterized in that: The high-pressure injector (4) is provided with two injection pipes (401), the two injection pipes (401) are arranged symmetrically front to back, and a plurality of injection holes (401-1) are provided on opposite surfaces of the two injection pipes (401).

4. The wide lead frame cleaning device according to claim 3, characterized in that: The injection pipe (401) is configured to be cylindrical.

5. The wide lead frame cleaning device according to claim 1, characterized in that: The sprayer (5) is provided with two spray pipes (501).

6. The wide lead frame cleaning device according to claim 5, characterized in that: The spray pipe (501) is configured as a serpentine flat-mouth spray pipe.

7. The wide lead frame cleaning device according to claim 1, characterized in that: The water-absorbing rollers (7) are provided in two numbers, and the two water-absorbing rollers (7) are arranged in parallel front and back.

8. The wide lead frame cleaning device according to claim 7, characterized in that: The water-absorbing roller (7) is provided with a water-absorbing cotton core.

9. The wide lead frame cleaning device according to claim 7, characterized in that: The upper and lower side ends of the two water-absorbing rollers (7) are both installed with bearings (11); the upper and lower ends of the rear water-absorbing roller (7) are rotatably connected to the top plate (602) and the bottom plate (601) through the bearings (11); the bearings (11) of the front water-absorbing roller (7) are both installed on the bearing seat plate (12); the top plate (602) and the bottom plate (601) are respectively provided with a second slide groove (602-1) and a first slide groove (601-1); the upper and lower bearing seat plates (12) are respectively arranged in the second slide groove (602-1) and the first slide groove (601-1).

10. The wide lead frame cleaning device according to claim 9, characterized in that: The mounting frame (6) is also provided with a suction roller gap adjustment assembly, the suction roller gap adjustment assembly comprising a suction roller gap adjustment plate (9), an adjustment bolt (10) being provided on the front side of the suction roller gap adjustment plate (9), the adjustment bolt (10) being threadedly connected to the front side plate (603) and extending to the front side of the front side plate (603), and screw rods (13) being connected to both sides of the upper bearing seat plate (12), the screw rods (13) extending to the outside of the top plate (602) and being locked in place by butterfly nuts (14).

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