Waste gas absorption structure for double-sided electroplating lead frame

Abstract

The utility model relates to the technical field of waste gas absorption, in particular to a waste gas absorption structure for a double-sided electroplating lead frame, which is characterized in that a first connecting frame is fixedly arranged between two support frames, conveying wheels are movably arranged in grooves formed in the front side and the rear side of each support frame, and a rotating rod is rotatably arranged on the side wall of each support frame through a bearing; a motor is fixedly arranged on the upper portion of the supporting frame on the left side, transmission boxes are fixedly arranged on the left side wall and the right side wall of an air guiding frame, a driven rod is fixedly sleeved with an air cylinder, an air extracting pump is fixedly arranged on a first connecting frame, and an air conveying pipe connected with the air extracting pump is arranged on the air guiding frame; the waste gas absorption height position can be adjusted according to the liquid level height of the electroplating liquid in the electroplating pool, and the situation that due to the fact that the difference between the liquid level of the electroplating liquid and the waste gas absorption height is large, generated waste gas is scattered all around from the position above the liquid level of the electroplating liquid, and the waste gas absorption effect is reduced is avoided.

Description

Technical Field

[0001] This utility model relates to the field of waste gas absorption technology, specifically to a waste gas absorption structure for a double-sided electroplated lead frame. Background Technology

[0002] As a chip carrier for integrated circuits, the lead frame is a key structural component that uses bonding materials to electrically connect the internal circuit leads of the chip with the external leads, forming an electrical circuit. During the electroplating process of the lead frame, some waste gas is generated. Existing waste gas absorption equipment has a fixed waste gas absorption position, but the liquid level of the electroplating solution is not constant during consumption. If the distance between the waste gas absorption position of the waste gas absorption equipment and the liquid level of the electroplating solution is large, some waste gas will disperse above the liquid level of the electroplating solution, thereby reducing the absorption effect of the waste gas absorption equipment. Therefore, there is an urgent need for a waste gas absorption structure for double-sided electroplated lead frames. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings and deficiencies of the existing technology by providing a reasonably designed waste gas absorption structure for a double-sided electroplated lead frame, thereby solving the aforementioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a conveyor belt and a support frame, the conveyor belt is movably disposed below the two support frames, and the lead frame is disposed at the lower part of the conveyor belt via hooks;

[0005] It also includes:

[0006] The first connecting frame is fixedly installed between two support frames. Conveyor wheels are movably installed in the grooves opened on the front and rear sides of the support frames, and the conveyor wheels are movably abutting against the protrusions on the side wall of the conveyor belt.

[0007] There are four rotating rods, which are fixedly mounted on four conveying wheels. The rotating rods are rotatably mounted on the side wall of the support frame through bearings. A motor is fixedly mounted on the upper part of the support frame on the left side, and the output shaft of the motor is connected to the rotating rod.

[0008] The air guide frame is suspended on the front and rear sides of the conveyor belt. A transmission box is fixedly installed on the left and right side walls of the air guide frame. A driven rod is rotatably inserted through the air guide frame via a bearing. An air duct is fixedly sleeved on the driven rod. The transmission box is equipped with a synchronous drive mechanism connected to the driven rod and the rotating rod.

[0009] An air pump is fixedly installed on the first connecting frame. The air pump is connected to an external waste gas treatment device. An air delivery pipe connected to the air pump is provided on the air guide frame.

[0010] The first synchronizing rod is rotatably mounted in the first connecting frame via a bearing. The end of the first synchronizing rod is connected to the second synchronizing rod via a bevel gear pair. The second synchronizing rod is rotatably mounted in the support frame via a bearing. The end of the second synchronizing rod is connected to the rotating rod via a bevel gear pair. The support frame is equipped with a height adjustment mechanism that is connected to the air guide frame.

[0011] Furthermore, the synchronous drive mechanism includes:

[0012] The drive rod is rotatably inserted into the transmission box via a bearing. One end of the drive rod is fixedly fitted with a first bevel gear. One end of the driven rod passes through the air guide frame and is movably installed in the transmission box. One end of the driven rod is fixedly fitted with a second bevel gear that meshes with the first bevel gear.

[0013] The drive bar consists of several bars, which are distributed with equal rounded corners on the annular sidewall of the drive rod. Both the drive rod and the drive bars are movably inserted into the rotating rod.

[0014] Furthermore, the height adjustment mechanism includes:

[0015] The second connecting frame consists of two frames, which are fixedly installed between the two support frames at the front and rear sides of the first connecting frame.

[0016] Two bidirectional lead screws are provided, which are rotatably mounted in two No. 2 connecting frames via bearings. Two movable blocks are rotatably mounted on the bidirectional lead screws via threads. The movable blocks are movably mounted in the movable slots opened at the lower part of the No. 2 connecting frame. The left ends of the two bidirectional lead screws pass through the left support frame and are connected by a pulley and belt drive. The right end of one bidirectional lead screw passes through the right support frame and is fixedly mounted with an adjustment handle.

[0017] There are four connecting rods, which are respectively hinged to the left and right sides of the upper part of the two air guide frames, and one end of the connecting rod is hinged to the movable block.

[0018] Furthermore, a protective shell is fixedly installed on the left side wall of the left support frame, and the protective shell covers the pulley and belt.

[0019] Furthermore, a guide frame is fixedly installed on the side wall of the transmission box, and the upper end of the guide frame is movably inserted into the support frame.

[0020] Furthermore, the guide frame has scale lines on its side wall, and a transparent plate is fixedly installed in the strip groove opened on the front side wall of the support frame.

[0021] Compared with the prior art, the beneficial effects of this utility model are: the waste gas absorption structure for double-sided electroplating lead frame described in this utility model can adjust the waste gas absorption height according to the liquid level of the electroplating solution in the electroplating tank, avoiding a large difference between the liquid surface of the electroplating solution and the absorption height of the waste gas, which would cause some of the waste gas to disperse from the liquid surface of the electroplating solution and reduce the absorption effect of the waste gas. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is an exploded view of the air guide frame and air duct components in this utility model.

[0024] Figure 3 This is a schematic diagram showing the connection of the air guide frame, driven rod, air duct, synchronous drive mechanism, air supply pipe and air pump of this utility model.

[0025] Figure 4 This is an exploded view of the parts of the support frame, conveyor wheel, rotating rod, transmission box, drive rod, drive bar, guide frame, and transparent plate in this utility model.

[0026] Figure 5 This is a cross-sectional view of the support frame, the first connecting frame, and the second connecting frame in this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Conveyor belt; 2. Support frame; 3. Connecting frame 1; 4. Conveyor wheel; 5. Rotating rod; 6. Motor; 7. Air guide frame; 8. Transmission box; 9. Driven rod; 10. Air duct; 11. Synchronous drive mechanism; 11. Drive rod; 11-1. First bevel gear; 11-2. Second bevel gear; 11-3. Drive bar; 11-4. Air pipe; 12. First synchronizing rod; 13. Second synchronizing rod; 14. Height adjustment mechanism; 15. Connecting frame 2; 15-1. Bidirectional lead screw; 15-2. Movable block; 15-3. Adjusting handle; 15-4. Connecting rod; 15-5. Movable groove; 16. Guide frame; 17. Scale line; 18. Transparent plate; 19. Protective shell; 20. Air pump; 21. Detailed Implementation

[0029] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] like Figures 1-5 As shown, this specific embodiment adopts the following technical solution: it includes a conveyor belt 1 and a support frame 2, the conveyor belt 1 is movably arranged below the two support frames 2, and the lead frame is set at the lower part of the conveyor belt 1 by hooks;

[0031] It also includes:

[0032] The first connecting frame 3 is fixedly installed between two support frames 2. Conveyor wheels 4 are movably installed in the grooves opened on the front and rear sides of the support frame 2, and the conveyor wheels 4 are movably abutting against the protrusions on the side wall of the conveyor belt 1.

[0033] There are four rotating rods 5, which are fixedly installed on the four conveying wheels 4 respectively. The rotating rods 5 are rotatably mounted on the side wall of the support frame 2 through bearings. A motor 6 is fixedly installed on the upper part of the support frame 2 on the left side. The output shaft of the motor 6 is connected to the rotating rods 5.

[0034] The air guide frame 7 is suspended on the front and rear sides of the conveyor belt 1. A transmission box 8 is fixedly installed on the left and right side walls of the air guide frame 7. A driven rod 9 is rotatably inserted through the air guide frame 7 via a bearing. An air duct 10 is fixedly sleeved on the driven rod 9. A synchronous drive mechanism 11 connected to the driven rod 9 and the rotating rod 5 is provided on the transmission box 8.

[0035] A vacuum pump 21 is fixedly installed on the first connecting frame 3. The vacuum pump 21 is connected to an external waste gas treatment device. The air guide frame 7 is provided with a gas supply pipe 12 connected to the vacuum pump 21.

[0036] A first synchronizing rod 13 is rotatably mounted in a first connecting frame 3 via a bearing. The end of the first synchronizing rod 13 is connected to a second synchronizing rod 14 via a bevel gear pair. The second synchronizing rod 14 is rotatably mounted in a support frame 2 via a bearing. The end of the second synchronizing rod 14 is connected to a rotating rod 5 via a bevel gear pair. The support frame 2 is equipped with a height adjustment mechanism 15 connected to the air guide frame 7. A guide frame 17 is fixedly mounted on the side wall of the transmission box 8. The upper end of the guide frame 17 is movably inserted into the support frame 2. During the process of adjusting the height position of the air guide frame 7 using the height adjustment mechanism 15, the guide frame 17 can provide auxiliary guidance for the movement of the air guide frame 7, thereby improving the stability of the air guide frame 7. The side wall of the guide frame 17 is provided with scale lines 18. A transparent plate 19 is fixedly mounted in a strip groove opened on the front side wall of the support frame 2. The scale lines 18 on the guide frame 17 can be observed through the transparent plate 19, making it easy to understand the adjustment height of the air guide frame 7.

[0037] The synchronous drive mechanism 11 includes:

[0038] The drive rod 11-1 is rotatably inserted into the transmission box 8 via a bearing. One end of the drive rod 11-1 is fixedly fitted with a first bevel gear 11-2. One end of the driven rod 9 passes through the air guide frame 7 and is movably mounted in the transmission box 8. One end of the driven rod 9 is fixedly fitted with a second bevel gear 11-3 that meshes with the first bevel gear 11-2. The diameter of the second bevel gear 11-3 is smaller than the diameter of the first bevel gear 11-2, so that when the drive rod 11-1 drives the first bevel gear 11-2 to rotate, the second bevel gear 11-3 can drive the driven rod 9 to rotate at a higher speed.

[0039] The drive bar 11-4 consists of several bars, each with equal rounded corners, distributed on the annular sidewall of the drive rod 11-1. Both the drive rod 11-1 and the drive bar 11-4 are movably inserted into the rotating rod 5. During the process of the rotating rod 5 driving the conveyor wheel 4 to rotate and causing the conveyor belt 1 to move, the drive bar 11-4 can drive the drive rod 11-1 to rotate. By utilizing the cooperation of the first bevel gear 11-2 and the second bevel gear 11-3, the driven rod 9 and the air duct 10 can be synchronously rotated at high speed without the need for other electronic equipment to drive the air duct 10 to rotate, thus reducing the cost of use.

[0040] The height adjustment mechanism 15 includes:

[0041] The second connecting frame 15-1 consists of two frames, which are fixedly installed between the two support frames 2 at the front and rear sides of the first connecting frame 3.

[0042] Two bidirectional lead screws 15-2 are provided, each rotatably mounted in two secondary connecting frames 15-1 via bearings. Two movable blocks 15-3 are rotatably mounted on the bidirectional lead screws 15-2 via threads. The movable blocks 15-3 are movably mounted in the movable grooves 16 opened at the lower part of the secondary connecting frames 15-1. The left ends of the two bidirectional lead screws 15-2 pass through the left support frame 2 and are connected by a pulley and belt drive. A protective shell 20 is fixedly installed on the left side wall of the left support frame 2, and the protective shell 20 covers the pulley and belt. The protective shell 20 can protect the pulley and belt and prevent workers from accidentally contacting the rotating pulley or belt and getting injured. An adjusting handle 15-4 is fixedly installed on the right end of one side of the bidirectional lead screw 15-2 after passing through the right support frame 2.

[0043] There are four connecting rods 15-5, which are respectively hinged to the left and right sides of the upper part of the two air guide frames 7. One end of the connecting rod 15-5 is hinged to the movable block 15-3.

[0044] When using this utility model, the support frame 2 is fixed inside the electroplating equipment, immersing the lead frame in the electroplating bath for double-sided electroplating. Then, the motor 6 and the vacuum pump 21 are started. The motor 6 drives the rotating rod 5 connected to its output shaft to rotate. Through the transmission cooperation of the first synchronous rod 13, the second synchronous rod 14, and the bevel gear pair, the four rotating rods 5 rotate synchronously, with the front and rear rotating rods 5 rotating in opposite directions. The rotating rods 5 drive the conveyor wheel 4 to rotate, allowing the conveyor belt 1 to move the lead frame below. Simultaneously, the drive bar 11-4 can drive the drive rod 11-1 to rotate through the rotation of the rotating rods 5. The drive rod 11-1 drives the first bevel gear 11-2 to rotate, and through the transmission cooperation of the first bevel gear 11-2 and the second bevel gear 11-4... The meshing of bevel gear 11-3 enables high-speed rotation of driven rod 9 and air duct 10, causing the waste gas generated during the electroplating process of the lead frame to accumulate in the air guide frame 7. The waste gas is then absorbed into the external waste gas treatment equipment by air supply pipe 12 and air pump 21. When the distance between the liquid surface of the electroplating solution and the air guide frame 7 is large and affects the absorption effect of the waste gas, the adjustment handle 15-4 can be rotated. The adjustment handle 15-4 drives the connected bidirectional lead screw 15-2 to rotate, and the transmission of pulley and belt is used to realize the synchronous rotation of the bidirectional lead screws 15-2 on both sides. At this time, the movable blocks 15-3 on the left and right sides move synchronously in opposite directions, so that the connecting rod 15-5 drives the air guide frame 7 to move downward, shortening the distance between the air guide frame 7 and the liquid surface of the electroplating solution.

[0045] Compared with the prior art, the beneficial effects of this utility model are:

[0046] With the cooperation of the height adjustment mechanism 15, the rotation of the bidirectional lead screw 15-2 is used to realize the synchronous reverse movement of the movable blocks 15-3 on the left and right sides, so that the connecting rod 15-5 can drive the air guide frame 7 to move up and down, adjust the distance between the air guide frame 7 and the liquid surface of the electroplating solution, and maintain good absorption of exhaust gas.

[0047] During the process of the rotating rod 5 driving the conveyor wheel 4 to rotate and causing the conveyor belt 1 to move, through the cooperation of the synchronous drive mechanism 11, the drive bar 11-4 can drive the drive rod 11-1 to rotate, and through the cooperation of the first bevel gear 11-2 and the second bevel gear 11-3, the driven rod 9 and the air duct 10 can be rotated synchronously at high speed, without the need to use other electronic equipment to drive the air duct 10 to rotate, thus reducing the cost of use;

[0048] The scale lines 18 on the guide frame 17 can be observed through the transparent plate 19, making it easy to understand the adjustment height of the air guide frame 7;

[0049] During the process of adjusting the height of the air guide frame 7 using the height adjustment mechanism 15, the guide frame 17 can provide auxiliary guidance for the movement of the air guide frame 7, thereby improving the stability of the air guide frame 7.

[0050] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A waste gas absorption structure for a double-sided electroplated lead frame, comprising a conveyor belt (1) and a support frame (2), wherein the conveyor belt (1) is movably disposed below the two support frames (2), and the lead frame is disposed at the lower part of the conveyor belt (1) by means of a hook; Its features are: It also includes: The first connecting frame (3) is fixedly set between two support frames (2). The grooves on the front and rear sides of the support frame (2) are equipped with conveyor wheels (4), and the conveyor wheels (4) are movably abutted against the protrusions on the side wall of the conveyor belt (1). Rotating rod (5), there are four rotating rods (5), which are fixedly installed on four conveying wheels (4) respectively. The rotating rods (5) are rotatably installed on the side wall of the support frame (2) through bearings. A motor (6) is fixedly installed on the upper part of the support frame (2) on the left side. The output shaft of the motor (6) is connected to the rotating rod (5). The air guide frame (7) is suspended on the front and rear sides of the conveyor belt (1). A transmission box (8) is fixedly installed on the left and right side walls of the air guide frame (7). A driven rod (9) is rotatably installed inside the air guide frame (7) through a bearing. A wind tube (10) is fixedly sleeved on the driven rod (9). A synchronous drive mechanism (11) connected to the driven rod (9) and the rotating rod (5) is provided on the transmission box (8). The air pump (21) is fixedly installed on the first connecting frame (3). The air pump (21) is connected to the external waste gas treatment equipment. The air guide frame (7) is provided with an air supply pipe (12) connected to the air pump (21). Synchronous rod (13) is rotatably mounted in connecting frame (3) via bearing. The end of synchronous rod (13) is connected to synchronous rod (14) via bevel gear pair. Synchronous rod (14) is rotatably mounted in support frame (2) via bearing. The end of synchronous rod (14) is connected to rotating rod (5) via bevel gear pair. The support frame (2) is provided with height adjustment mechanism (15) connected to air guide frame (7).

2. The waste gas absorption structure for a double-sided electroplated lead frame according to claim 1, characterized in that: The synchronous drive mechanism (11) includes: The drive rod (11-1) is rotatably inserted into the transmission box (8) through the bearing. One end of the drive rod (11-1) is fixedly fitted with a first bevel gear (11-2). One end of the driven rod (9) passes through the air guide frame (7) and is movably installed in the transmission box (8). One end of the driven rod (9) is fixedly fitted with a second bevel gear (11-3) that meshes with the first bevel gear (11-2). The drive bar (11-4) consists of several bars, which are distributed with equal rounded corners on the annular sidewall of the drive rod (11-1). Both the drive rod (11-1) and the drive bar (11-4) are movably inserted into the rotating rod (5).

3. The waste gas absorption structure for a double-sided electroplated lead frame according to claim 1, characterized in that: The height adjustment mechanism (15) includes: The second connecting frame (15-1) consists of two frames, which are fixedly installed between the two support frames (2) at the front and rear sides of the first connecting frame (3); Two bidirectional lead screws (15-2) are provided, which are rotatably mounted in two No. 2 connecting frames (15-1) via bearings. Two movable blocks (15-3) are rotatably mounted on the bidirectional lead screws (15-2) via threads. The movable blocks (15-3) are movably mounted in the movable groove (16) opened at the lower part of the No. 2 connecting frame (15-1). The left ends of the two bidirectional lead screws (15-2) pass through the left support frame (2) and are connected by a pulley and belt drive. The right end of one bidirectional lead screw (15-2) passes through the right support frame (2) and is fixedly mounted with an adjustment handle (15-4). There are four connecting rods (15-5), which are respectively hinged to the left and right sides of the upper part of the two air guide frames (7). One end of the connecting rod (15-5) is hinged to the movable block (15-3).

4. The waste gas absorption structure for a double-sided electroplated lead frame according to claim 1, characterized in that: A protective shell (20) is fixedly installed on the left side wall of the left support frame (2), and the protective shell (20) covers the pulley and belt.

5. The waste gas absorption structure for a double-sided electroplated lead frame according to claim 1, characterized in that: A guide frame (17) is fixedly installed on the side wall of the transmission box (8), and the upper end of the guide frame (17) is movably inserted into the support frame (2).

6. The waste gas absorption structure for a double-sided electroplated lead frame according to claim 5, characterized in that: The guide frame (17) has scale lines (18) on its side wall, and a transparent plate (19) is fixedly installed in the strip groove opened on the front side wall of the support frame (2).

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