Electroplating structure of LED lead frame

Abstract

The utility model relates to the technical field of lead frame production, in particular to an electroplating structure of an LED lead frame. Comprising a lead frame used for electroplating, an electroplating liquid pool, reels located outside the two sides of the electroplating liquid pool and used for winding and unwinding the lead frame, a single-face electroplating shielding assembly used for single-face electroplating and an electroplating liquid cleaning assembly located outside the electroplating liquid pool and used for cleaning electroplating liquid on the single-face electroplating shielding assembly. According to the invention, the temperature-resistant and corrosion-resistant silica gel shielding belt and the plated object are rolled and covered together on one surface which does not need to be electroplated, and the non-plated surface of the lead frame is in isolated contact with the electroplating liquid in the electroplating liquid pool, so that the purpose of single-surface electroplating of the object is realized, and half of the electroplating material cost can be saved; the electroplating solution cleaning assembly is arranged to clean the electroplating solution contaminated by the shielding belt passing through the electroplating solution pool, the electroplating solution is saved, the production cost is saved, and the electroplating solution cleaning assembly can be adjusted and used according to the winding direction so as to adapt to different production environments.

Description

Technical Field

[0001] The utility model relates to the technical field of lead frame production, in particular to an LED lead frame electroplating structure. Background Art

[0002] LED lead plating refers to a technology that performs electrochemical deposition and metallization on the pins of LEDs. This technology can improve the conductivity of LEDs, reduce resistance, enhance connection stability and reliability, and thus improve the performance and life of LED products. Through lead plating, the electrical connection between LEDs and brackets or PCB boards can be improved, contact resistance can be reduced, and more complex packaging designs can be achieved.

[0003] In the traditional roll-to-roll continuous electroplating process, the object to be plated is pulled through the electroplating solution tank, and both the front and back of the object are covered with the coating. Some product functional requirements only require electroplating on the front side, resulting in waste of electroplating materials and excessively high costs. Utility Model Content

[0004] The purpose of the utility model is to provide an LED lead frame electroplating structure to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An LED lead frame electroplating structure, comprising a lead frame for electroplating, a plating solution pool, a reel located outside the two sides of the plating solution pool for retracting and releasing the lead frame, a single-sided electroplating shielding component for single-sided electroplating, and a plating solution cleaning component located outside the plating solution pool for cleaning the plating solution on the single-sided electroplating shielding component, wherein the lead frame is located parallel to the top of the plating solution pool, a first transmission wheel is provided at the top and bottom of the lead frame located on the plating solution pool, and a second transmission wheel is provided at the top and bottom of the lead frame located outside the two sides of the plating solution pool;

[0007] The single-sided electroplating shielding assembly includes a driving wheel and a shielding belt. The driving wheels are symmetrically distributed on both sides above the second transmission wheel. A third rotating wheel is arranged above and in front of the two second transmission wheels. The shielding belt is a circuitous structure and is located outside the first transmission wheel, the second transmission wheel driving wheel and the third rotating wheel at the top of the lead frame. The bottom of the shielding belt is parallel to the top of the lead frame.

[0008] As a preferred solution of the utility model, one end of the electroplated lead frame is connected to a reel located outside one side of the plating solution pool, and the other end is connected to a reel located outside the other side of the plating solution pool. The lead frame and the shielding belt located on the top of the plating solution pool are connected to the plating liquid inside the plating solution pool.

[0009] As a preferred solution of the utility model, the electroplating liquid cleaning component is located on the shielding belt outside the electroplating liquid pool, and the electroplating liquid cleaning component includes a fixed frame, a driving gear, a driven gear, a cleaning frame and a cleaning scraper. The driving gear is fixed to the fixed frame, and the driven gear is distributed in a supporting structure on both sides of the driving gear. The two driven gears are meshed and connected with the driving gear. The cleaning frame is respectively fixed to the outside of the end of the driving gear, and the cleaning scraper is fixed to the outer wall of the bottom of the cleaning frame by screws, and the bottom of one of the cleaning scrapers is tangent to the shielding belt outside the electroplating liquid pool.

[0010] As a preferred solution of the utility model, when the bottom of the cleaning scraper at the bottom of one of the cleaning racks is tangent to the shielding belt outside the plating liquid pool, the bottom of the cleaning scraper at the bottom of the other cleaning rack is not tangent to the shielding belt outside the plating liquid pool.

[0011] As a preferred solution of the utility model, the fixed shaft of the driving gear is connected to the external power supply motor through a coupling.

[0012] As a preferred solution of the utility model, the driving wheel and the third rotating wheel are not in the same plane.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] In view of the problems raised in the background technology, the present application changes the traditional wheel into an elastic transmission wheel, and rolls and covers the side that does not need to be electroplated with a heat-resistant and corrosion-resistant silicone shielding belt together with the plated object, so that the side of the lead frame that is not to be plated is isolated from the electroplating liquid in the electroplating liquid tank, thereby achieving the purpose of single-sided electroplating of the object, which can save half of the electroplating material cost;

[0015] By setting up a plating liquid cleaning component, the plating solution contaminated by the shielding belt after passing through the plating liquid pool can be cleaned, thereby saving plating solution, ensuring the shielding belt works, and saving production costs. The plating liquid cleaning component can be adjusted and used according to the winding direction to adapt to different production environments, further improving production efficiency and flexibility, and is easy to use and adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is an axonometric view of the integral single-sided electroplated shielding component and the lead frame of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the overall electroplating liquid cleaning component of the utility model.

[0019] In the figure: 1. lead frame; 2. plating solution tank; 3. reel; 4. plating solution cleaning assembly; 41. fixing frame; 42. driving gear; 43. driven gear; 44. cleaning frame; 45. cleaning scraper; 5. single-sided plating shielding assembly; 51. driving wheel; 52. shielding belt; 6. first transmission wheel; 61. second transmission wheel; 63. third rotating wheel. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention.

[0021] Example

[0022] See also Figure 1-3 The utility model provides a technical solution: an LED lead frame electroplating structure, comprising a lead frame 1 for electroplating, a plating solution pool 2, a reel 3 located outside the plating solution pool 2 on both sides for retracting and releasing the lead frame 1, a single-sided electroplating shielding component 5 for single-sided electroplating, and a plating solution cleaning component 4 located outside the plating solution pool 2 for cleaning the plating solution on the single-sided electroplating shielding component 5, the lead frame 1 is parallelly located at the top of the plating solution pool 2, the top and bottom of the lead frame 1 located on the plating solution pool 2 are provided with a first transmission wheel 6, and the top and bottom of the lead frame 1 located outside the plating solution pool 2 on both sides are provided with a second transmission wheel 61;

[0023] The single-sided electroplating shielding assembly 5 includes a driving wheel 51 and a shielding belt 52. The driving wheel 51 is symmetrically distributed on both sides above the second transmission wheel 61. A third rotating wheel 63 is arranged above and in front of the two second transmission wheels 61. The shielding belt 52 is a circuitous structure and is located outside the first transmission wheel 6, the second transmission wheel 61, the driving wheel 51 and the third rotating wheel 63 at the top of the lead frame 1. The bottom of the shielding belt 52 is parallel to and abuts against the top of the lead frame 1; one end of the electroplated lead frame 1 is connected to the reel 3 located outside one side of the plating solution pool 2, and the other end is connected to the reel 3 located outside the other side of the plating solution pool 2. The lead frame 1 and the shielding belt 52 located at the top of the plating solution pool 2 are connected to the plating solution inside the plating solution pool 2; the driving wheel 51 and the third rotating wheel 63 are not in the same plane.

[0024] It should be noted that, in this embodiment, when the lead frame 1 solution needs to be electroplated on one side, the traditional wheel is replaced with an elastic transmission wheel, and the side that does not need to be electroplated is covered with a heat-resistant and corrosion-resistant silicone shielding belt 52 and the plated object together with the rolling, so that the side of the lead frame 1 that is not to be plated is isolated from the electroplating solution in the electroplating solution pool 2, thereby achieving the purpose of single-sided electroplating of the object, which can save half of the electroplating material cost;

[0025] When double-sided electroplating is required, just remove the heat-resistant and corrosion-resistant silicone shielding belt 52, which is easy to use and operate;

[0026] Furthermore, the driving wheel 51 and the third rotating wheel 63 are not in the same plane and the third rotating wheel 63 is higher than the driving wheels 51 on both sides, so as to prevent the shielding belt 52 from slipping during operation.

[0027] See also Figure 1 and 3 , the plating liquid cleaning component 4 is located on the shielding belt 52 outside the plating liquid pool 2, and the plating liquid cleaning component 4 includes a fixed frame 41, a driving gear 42, a driven gear 43, a cleaning frame 44 and a cleaning scraper 45. The driving gear 42 is fixed to the fixed frame 41, and the driven gear 43 is distributed on both sides of the driving gear 42 in a supporting structure. The two driven gears 43 are meshed and connected with the driving gear 42, and the cleaning frame 44 is respectively fixed to the outside of the end of the driving gear 42. The cleaning scraper 45 is fixed to the outer wall of the bottom of the cleaning frame 44 by screws, and the bottom of one of the cleaning scrapers 45 is tangent to the shielding belt 52 outside the plating liquid pool 2; when the bottom of the cleaning scraper 45 at the bottom of one cleaning frame 44 is tangent to the shielding belt 52 outside the plating liquid pool 2, the bottom of the cleaning scraper 45 at the bottom of the other cleaning frame 44 is not tangent to the shielding belt 52 outside the plating liquid pool 2; the fixed shaft of the driving gear 42 is connected to the external power supply motor through a coupling.

[0028] It should be noted that, in this embodiment, the electroplating solution cleaning component 4 is provided to clean the electroplating solution contaminated by the shielding belt 52 passing through the electroplating solution pool 2, thereby saving the electroplating solution, ensuring the operation of the shielding belt 52, and saving the production cost. The electroplating solution cleaning component 4 can be adjusted and used according to the winding direction to adapt to different production environments, further improving the efficiency and flexibility of production, and being easy to use and adjust;

[0029] When adjustment is required, the driving gear 42 motor is started, and the two driven gears 43 are meshed and connected with the driving gear 42. The driving gear 42 drives the driven gear 43 to rotate, and the driven gear 43 drives the cleaning frame 44 and the cleaning scraper 45 at the bottom thereof to move. When the bottom of the cleaning scraper 45 at the bottom of one cleaning frame 44 is tangent to the shielding belt 52 located outside the plating liquid pool 2, the bottom of the cleaning scraper 45 at the bottom of the other cleaning frame 44 is not tangent to the shielding belt 52 located outside the plating liquid pool 2. The plating liquid on the shielding belt 52 is cleaned by the tangent cleaning scraper 45, thereby saving plating solution, ensuring the working of the shielding belt 52, and saving production costs.

[0030] The utility model workflow:

[0031] When in use, the driving gear 42 motor is started, and the two driven gears 43 are meshed and connected with the driving gear 42. The driving gear 42 drives the driven gear 43 to rotate, and the driven gear 43 drives the cleaning frame 44 and the cleaning scraper 45 at the bottom thereof to move. When the bottom of the cleaning scraper 45 at the bottom of one cleaning frame 44 is tangent to the shielding belt 52 located outside the electroplating liquid pool 2, the bottom of the cleaning scraper 45 at the bottom of the other cleaning frame 44 is not tangent to the shielding belt 52 located outside the electroplating liquid pool 2, and the electroplating liquid on the shielding belt 52 is cleaned by the tangent cleaning scraper 45. The reel 3 is wound in the winding direction, pulling the lead frame 1 through the plating liquid in the plating liquid tank 2. The top of the plating liquid tank 2 is rolled and covered together with the plated object through the shielding belt 52, and the non-plated side of the lead frame 1 is isolated from the plating liquid in the plating liquid tank 2. The bottom surface of the lead frame 1 is electroplated through the plating liquid tank 2; thereby, the purpose of single-sided electroplating of the object is achieved, half of the cost of electroplating materials can be saved, and production costs can be saved. The plating liquid cleaning component 4 can be adjusted and used according to the winding direction to adapt to different production environments, further improving the efficiency and flexibility of production, and is easy to use and adjust.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An LED lead frame electroplating structure, comprising a lead frame (1) for electroplating, a plating solution pool (2), a reel (3) located outside both sides of the plating solution pool (2) for retracting and releasing the lead frame (1), a single-sided electroplating shielding component (5) for single-sided electroplating, and a plating solution cleaning component (4) located outside the plating solution pool (2) for cleaning the plating solution on the single-sided electroplating shielding component (5), characterized in that: The lead frame (1) is located parallel to the top of the electroplating liquid pool (2); the top and bottom of the lead frame (1) located on the electroplating liquid pool (2) are provided with first transmission wheels (6); the top and bottom of the lead frame (1) located outside the two sides of the electroplating liquid pool (2) are provided with second transmission wheels (61); The single-sided electroplating shielding assembly (5) comprises a driving wheel (51) and a shielding belt (52); the driving wheels (51) are symmetrically distributed on both sides above the second transmission wheels (61); a third rotating wheel (63) is arranged above and in front of the two second transmission wheels (61); the shielding belt (52) is a circuitous structure located outside the first transmission wheel (6), the second transmission wheel (61), the driving wheel (51) and the third rotating wheel (63) at the top of the lead frame (1); and the bottom of the shielding belt (52) is parallel to and abuts against the top of the lead frame (1).

2. The LED lead frame electroplating structure according to claim 1, characterized in that: One end of the electroplated lead frame (1) is connected to a reel (3) located outside one side of the electroplating liquid pool (2), and the other end is connected to a reel (3) located outside the other side of the electroplating liquid pool (2). The lead frame (1) and the shielding belt (52) located at the top of the electroplating liquid pool (2) are connected to the electroplating liquid inside the electroplating liquid pool (2).

3. The LED lead frame electroplating structure according to claim 1, characterized in that: The electroplating liquid cleaning component (4) is located on the shielding belt (52) outside the electroplating liquid pool (2). The electroplating liquid cleaning component (4) comprises a fixing frame (41), a driving gear (42), a driven gear (43), a cleaning frame (44) and a cleaning scraper (45). The driving gear (42) is fixed to the fixing frame (41). The driven gear (43) is distributed on both sides of the driving gear (42) in a supporting structure. The two driven gears (43) are meshed and connected with the driving gear (42). The cleaning frame (44) is respectively fixed to the outside of the end of the driving gear (42). The cleaning scraper (45) is fixed to the outer wall of the bottom of the cleaning frame (44) by screws. The bottom of one of the cleaning scrapers (45) is tangent to the shielding belt (52) outside the electroplating liquid pool (2).

4. The LED lead frame electroplating structure according to claim 3, characterized in that: When the bottom of the cleaning scraper (45) at the bottom of one of the cleaning racks (44) is tangent to the shielding belt (52) located outside the electroplating liquid pool (2), the bottom of the cleaning scraper (45) at the bottom of the other cleaning rack (44) is not tangent to the shielding belt (52) located outside the electroplating liquid pool (2).

5. The LED lead frame electroplating structure according to claim 3, characterized in that: The fixed shaft of the driving gear (42) is connected to an external power supply motor via a coupling.

6. The LED lead frame electroplating structure according to claim 1, characterized in that: The driving wheel (51) and the third rotating wheel (63) are not in the same plane.

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