Conveying assembly of high-speed tinning production line of high-density integrated circuit lead frame

Abstract

The utility model relates to the technical field of lead frame conveying, in particular to a conveying assembly of a high-speed tinning production line of a high-density integrated circuit lead frame, which comprises a machine table and a main conveying mechanism arranged on the machine table. The fixed plate frame and the movable plate frame are respectively provided with a belt assembly which supports the lead frame to be conveyed backwards together, and the machine table is provided with a bandwidth adjusting mechanism which drives the movable plate frame to move. A material stacking station is arranged beside the main conveying mechanism, the material stacking station is provided with a first protection plate surrounding the long edge of the lead frame and a second protection plate surrounding the wide edge of the lead frame, and the second protection plate and the movable plate frame are connected for synchronous adjustment; the machine table is provided with a guard plate adjusting mechanism for driving the first guard plate to move away from / close to the lead frame; a material blocking module is arranged between the fixed plate frame and the movable plate frame and used for lifting and blocking the lead frame, and the material blocking module is connected with the first protection plate. And linkage adjustment can be realized for lead frames with different sizes. The speed and the efficiency are high.

Description

Technical Field

[0001] The utility model relates to the technical field of lead frame conveying, in particular to a conveying component of a high-density integrated circuit lead frame high-speed tinning production line. Background Art

[0002] Lead frame, as the chip carrier of integrated circuit, is a key structural component that uses bonding materials (gold wire, aluminum wire, copper wire) to achieve electrical connection between the internal circuit lead end of the chip and the external lead to form an electrical circuit. It acts as a bridge to connect with external wires. Lead frame is required in most semiconductor integrated blocks and is an important basic material in the electronic information industry. Copper alloys for lead frames are roughly divided into copper-iron series, copper-nickel-silicon series, copper-chromium series, copper-nickel-tin series (JK--2 alloy), etc. Ternary, quaternary and other multi-component copper alloys can achieve better performance and lower cost than traditional binary alloys. Copper-iron series alloys have the most grades and have good mechanical strength, stress relaxation resistance and low creep resistance. They are a good type of lead frame material.

[0003] During the electroplating process, the lead frame needs to be loaded and unloaded. Most conveying mechanisms use belt conveyors for support during conveying. Conveying baffles are provided on both sides of the belt conveyor. The lead frame is located between the two conveying baffles and supported by the belt conveyor, and then conveyed forward. When the width of the lead frame increases, it cannot be placed between the two conveying baffles. When the width of the lead frame decreases, the distance between the two conveying baffles is too large, and the lead frame will fall from it, making it difficult to transport.

[0004] The applicant has previously developed an adjustable track conveying mechanism for lead frame processing equipment as disclosed in the Chinese patent document with announcement number CN219566654U, including a first conveyor plate and a second conveyor plate, the first conveyor plate is arranged with a belt conveyor along the length direction, and the second conveyor plate is equipped with multiple conveying rollers, and the conveying rollers and the belt conveyor are aligned laterally; an adjustment component is arranged between the first conveyor plate and the second conveyor plate, and the adjustment component includes a bottom guide and an adjustment drive; the lead frame to be conveyed forward is placed between the first conveyor plate and the second conveyor plate, and the bottom surface is respectively in contact with the belt conveyor and the conveying roller, and the belt conveyor drives the lead frame to be conveyed forward by forward movement; when the size of the lead frame changes, the second conveyor plate can be driven to slide along the bottom guide by the adjustment drive, so that the distance between the second conveyor plate and the first conveyor plate changes, so that lead frames of different sizes can be conveyed forward without falling or jamming.

[0005] For lead frames of different sizes, in addition to the need to adjust the gap of the conveying track, the guard plate of the stacked lead frames to be transferred to the conveying track also needs to be adjusted, and the position of the block on the conveying track that blocks and positions the lead frames also needs to be adjusted. The existing technology adjusts each module separately, the adjustment speed is slow, and it is easy to cause uncoordinated errors. In particular, the tinning production line currently used by the applicant requires a fast adjustment response speed, and the existing technology cannot meet the requirements. Summary of the invention

[0006] In view of the above technical problems existing in the prior art, the utility model provides a conveying component for a high-density integrated circuit lead frame high-speed tinning production line.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A conveying assembly for a high-density integrated circuit lead frame high-speed tinning production line is provided, comprising a machine platform and a main conveying mechanism arranged on the machine platform, the main conveying mechanism comprising a fixed plate frame and a movable plate frame arranged in parallel, the fixed plate frame and the movable plate frame are respectively provided with a belt assembly for jointly supporting the lead frame for conveying backward, the fixed plate frame is fixed to the machine platform, the movable plate frame can move in a direction away from / close to the fixed plate frame, and the machine platform is provided with a bandwidth adjustment mechanism for driving the movable plate frame to move; the invention is characterized in that: a stacking station is arranged beside the main conveying mechanism, the stacking station is provided with a first guard plate surrounding the long side of the lead frame and a second guard plate surrounding the wide side of the lead frame, the second guard plate is connected to the movable plate frame for synchronous adjustment; the machine platform is provided with a guard plate adjustment mechanism for driving the first guard plate to move away from / close to the lead frame; a material blocking module is arranged between the fixed plate frame and the movable plate frame for lifting and blocking the lead frame, and the material blocking module is connected to the first guard plate.

[0009] As a further optional scheme, there are two first guard plates, and the guard plate adjustment mechanism includes a guard plate adjustment motor, a guard plate adjustment screw and a guard plate adjustment nut. The guard plate adjustment nut is fixed to the first guard plate and is sleeved on the guard plate adjustment screw. The threads of the guard plate adjustment nuts corresponding to the two first guard plates are opposite, so that when the guard plate adjustment motor drives the guard plate adjustment screw to rotate, the two first guard plates are driven to move in opposite directions; the second guard plate is located between the two first guard plates.

[0010] As a further optional solution, the bandwidth adjustment mechanism includes a bandwidth adjustment motor, a bandwidth adjustment screw and a bandwidth adjustment nut. The bandwidth adjustment nut is fixed to the movable plate frame and is sleeved outside the bandwidth adjustment screw. The output shaft of the bandwidth adjustment motor is connected to the end of the bandwidth adjustment screw.

[0011] As a further optional solution, the movable plate frame is connected to a first connecting rod, and the end of the first connecting rod is connected to the second guard plate.

[0012] As a further optional solution, the material blocking module includes a material blocking cylinder and a material blocking block, wherein the material blocking block is fixed to the piston rod of the material blocking cylinder, and the material blocking block blocks the lead frame on the main conveying mechanism only when the piston rod is extended.

[0013] As a further optional solution, the first guard plate is connected to a second connecting rod extending below the main conveying mechanism, and the material blocking module is fixed to an end of the second connecting rod.

[0014] As a further optional solution, the stacking station still has a supporting mechanism, which includes a supporting plate and a supporting drive cylinder that drives the supporting plate to move horizontally to the middle of the stacking station.

[0015] As a further optional solution, the support plate includes a first support portion in the shape of a "[" and a second support portion in the shape of a "mountain", and the first support portion and the second support portion are arranged transversely opposite to each other.

[0016] As a further optional solution, a plate-penetrating slot for the support plate to pass through is opened on the top of the second guard plate.

[0017] As a further optional solution, the stacking station is provided with a sheet lifting mechanism for gradually lifting the stacked lead frames.

[0018] Beneficial effects of the utility model:

[0019] Compared with the prior art, the conveying assembly of the high-density integrated circuit lead frame high-speed tinning production line of the utility model, when transmitting lead frames of different widths, adjusting the distance between the fixed plate frame and the movable plate frame also drives the second guard plate surrounding the stacked lead frames in the width direction. When transmitting lead frames of different lengths, adjusting the first guard plate surrounding the stacked lead frames in the length direction also drives the material blocking module between the fixed plate frame and the fixed plate frame, so it only needs to be adjusted once for the length and width respectively, without the need for multiple separate adjustments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the conveying assembly in the embodiment.

[0021] Figure 2 The schematic diagram of the conveying assembly in the embodiment is shown with the machine platform hidden.

[0022] Figure 3 for Figure 2 Another visual diagram.

[0023] Figure 4 for Figure 3 Magnified view of the circled area.

[0024] Figure 5 It is a schematic diagram of the local structure in the embodiment.

[0025] Reference numerals:

[0026] Machine 1,

[0027] Main conveying mechanism 31, fixed plate frame 311, movable plate frame 312, belt assembly 313;

[0028] Bandwidth adjustment mechanism 32, bandwidth adjustment motor 321;

[0029] Stacking station 33, first guard plate 34, second guard plate 35, plate penetration slot 36;

[0030] Material blocking module 37, material blocking cylinder 371, material blocking block 372;

[0031] Guard plate adjustment mechanism 38, guard plate adjustment motor 381, guard plate adjustment screw rod 382, ​​guard plate adjustment nut 383;

[0032] A first connecting rod 39 and a second connecting rod 310;

[0033] The supporting mechanism 301, the supporting plate 3111, the first supporting part 3112, the second supporting part 3113, and the supporting driving cylinder 3114;

[0034] Film lifting mechanism 4. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0036] The conveying assembly of this embodiment, such as Figures 1 to 5 As shown, the machine comprises a platform 1 and a main conveying mechanism 31 arranged on the platform 1. The main conveying mechanism 31 comprises a fixed plate frame 311 and a movable plate frame 312 arranged in parallel. The fixed plate frame 311 and the movable plate frame 312 are respectively provided with a belt assembly 313 for supporting the lead frame and conveying it backward. The two sides of the lead frame are respectively supported and conveyed by the belt assemblies 313 on the fixed plate frame 311 and the movable plate frame 312. The fixed plate frame 311 is fixed to the machine 1, and the movable plate frame 312 can move in a direction away from / close to the fixed plate frame 311. The machine 1 is provided with a bandwidth adjustment mechanism 32 for driving the movable plate frame 312 to move, thereby adjusting the distance between the movable plate frame 312 and the fixed plate frame 311 to adapt to the transmission of lead frames of different widths. Specifically, the bandwidth adjustment mechanism 32 includes a bandwidth adjustment motor 321, a bandwidth adjustment screw and a bandwidth adjustment nut. The bandwidth adjustment nut is fixed to the movable plate frame 312 and is sleeved on the outside of the bandwidth adjustment screw. The output shaft of the bandwidth adjustment motor 321 is connected to the end of the bandwidth adjustment screw. A slide rail that slides with the movable plate frame 312 is provided on the machine 1.

[0037] In this embodiment, a stacking station 33 is provided beside the main conveying mechanism 31. The stacking station 33 is used to stack lead frames. The lead frames on the main conveying mechanism 31 are moved to the stacking station 33 for unloading by another manipulator, or the lead frames on the stacking station 33 are moved to the main conveying mechanism 31 for loading. The stacking station 33 is provided with a first guard plate 34 surrounding the long side of the lead frame and a second guard plate 35 surrounding the wide side of the lead frame. The second guard plate 35 is connected to the movable plate frame 312 for synchronous adjustment. It can be understood that for lead frames of different widths, the distance between the movable plate frame 312 and the fixed plate frame 311 and the position of the second guard plate 35 need to be adjusted. A blocking module 37 is provided between the fixed plate frame 311 and the movable plate frame 312, which is used to rise and block the lead frame for easy grasping by the manipulator. The machine 1 is provided with a guard plate adjustment mechanism 38 for driving the first guard plate 34 to move away from / close to the lead frame. The blocking module 37 is connected to the first guard plate 34. For lead frames of different lengths, the position of the blocking module 37 and the position of the first guard plate 34 are required. Here, only the position of the first guard plate 34 needs to be adjusted, and the blocking module 37 will naturally follow the adjustment without the need for separate operation.

[0038] In this embodiment, there are two first guard plates 34, and the two first guard plates 34 are arranged in parallel to correspond to the opposite sides of the length direction of the lead frame. The guard plate adjustment mechanism 38 includes a guard plate adjustment motor 381, a guard plate adjustment screw 382 and a guard plate adjustment nut 383. The guard plate adjustment nut 383 is fixed to the first guard plate 34 and sleeved outside the guard plate adjustment screw 382. The threads of the guard plate adjustment nuts 383 corresponding to the two first guard plates 34 are opposite, so that when the guard plate adjustment motor 381 drives the guard plate adjustment screw 382 to rotate, the two first guard plates 34 are driven to move in opposite directions. The second guard plate 35 is located between the two first guard plates 34. The machine 1 is provided with a slide rail for the two first guard plates 34 to slide.

[0039] In this embodiment, the movable plate frame 312 is connected to the first connecting rod 39, and the end of the first connecting rod 39 is connected to the second guard plate 35. The first guard plate 34 is connected to the second connecting rod 310 extending below the main conveying mechanism 31, and the material blocking module 37 is fixed to the end of the second connecting rod 310.

[0040] In this embodiment, the material blocking module 37 includes a material blocking cylinder 371 and a material blocking block 372. The material blocking block 372 is fixed to the piston rod of the material blocking cylinder 371. When the piston rod is extended, the material blocking block 372 blocks the lead frame on the main conveying mechanism 31. When the piston rod is retracted, the material blocking block 372 does not block the lead frame, and the lead frame can continue to be conveyed backward.

[0041] In this embodiment, the stacking station 33 is provided with a lifting mechanism 4 for gradually lifting the stacked lead frames. The stacking station 33 still has a supporting mechanism 301, which includes a supporting plate 3111 and a supporting driving cylinder 3114 that drives the supporting plate 3111 to move horizontally to the middle of the stacking station 33. When loading, the stacked lead frames continue to rise and are moved onto the main conveying mechanism 31 piece by piece. After the remaining stacked lead frames are lifted above the supporting plate 3111, the supporting plate 3111 is inserted into the bottom of the remaining lead frames, so that the lifting mechanism 4 can be moved down and reset to lift the next stack of lead frames, reducing the waiting time.

[0042] In this embodiment, the support plate 3111 includes a first support plate portion 3112 in a “[” shape and a second support plate portion 3113 in a “mountain” shape. The first support plate portion 3112 and the second support plate portion 3113 are arranged transversely opposite to each other and are driven by different support plate driving cylinders 3114. A through-plate slot 36 is formed on the top of the second guard plate 35 for the support plate 3111 to pass through.

[0043] In the description of the present invention, it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations.

[0044] Therefore, the above detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of the utility model.

[0045] In the description of the present utility model, it should be noted that the terms "middle", "upper", "lower", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A conveying assembly for a high-density integrated circuit lead frame high-speed tinning production line, comprising a machine platform and a main conveying mechanism arranged on the machine platform, wherein the main conveying mechanism comprises a fixed plate frame and a movable plate frame arranged in parallel, wherein the fixed plate frame and the movable plate frame are respectively provided with a belt assembly for supporting the lead frame and conveying it backward, wherein the fixed plate frame is fixed to the machine platform, and the movable plate frame can move in a direction away from / close to the fixed plate frame, and the machine platform is provided with a bandwidth adjustment mechanism for driving the movable plate frame to move; wherein the belt width adjustment mechanism is provided ... A stacking station is arranged beside the main conveying mechanism. The stacking station is provided with a first guard plate surrounding the long side of the lead frame and a second guard plate surrounding the wide side of the lead frame. The second guard plate is connected to the movable plate frame for synchronous adjustment. The machine is provided with a guard plate adjustment mechanism for driving the first guard plate to move away from / close to the lead frame. A material blocking module is arranged between the fixed plate frame and the movable plate frame for lifting and blocking the lead frame. The material blocking module is connected to the first guard plate.

2. The conveying assembly of the high-density integrated circuit lead frame high-speed tinning production line according to claim 1 is characterized by: There are two first guard plates, and the guard plate adjustment mechanism includes a guard plate adjustment motor, a guard plate adjustment screw and a guard plate adjustment nut. The guard plate adjustment nut is fixed to the first guard plate and is sleeved on the guard plate adjustment screw. The threads of the guard plate adjustment nuts corresponding to the two first guard plates are opposite, so that when the guard plate adjustment motor drives the guard plate adjustment screw to rotate, the two first guard plates are driven to move in opposite directions; the second guard plate is located between the two first guard plates.

3. The conveying assembly of the high-density integrated circuit lead frame high-speed tinning production line according to claim 1 is characterized by: The bandwidth adjustment mechanism includes a bandwidth adjustment motor, a bandwidth adjustment lead screw and a bandwidth adjustment nut. The bandwidth adjustment nut is fixed to the movable plate frame and sleeved outside the bandwidth adjustment lead screw. The output shaft of the bandwidth adjustment motor is connected to the end of the bandwidth adjustment lead screw.

4. The conveying assembly of the high-density integrated circuit lead frame high-speed tinning production line according to claim 1 is characterized by: The movable plate frame is connected with a first connecting rod, and the end of the first connecting rod is connected with the second guard plate.

5. The conveying assembly of the high-density integrated circuit lead frame high-speed tinning production line according to claim 1 is characterized by: The material blocking module comprises a material blocking cylinder and a material blocking block. The material blocking block is fixed to the piston rod of the material blocking cylinder. When the piston rod is extended, the material blocking block blocks the lead frame on the main conveying mechanism.

6. The conveying assembly of the high-density integrated circuit lead frame high-speed tinning production line according to claim 5 is characterized by: The first guard plate is connected with a second connecting rod extending below the main conveying mechanism, and the material blocking module is fixed to the end of the second connecting rod.

7. The conveying assembly of the high-density integrated circuit lead frame high-speed tinning production line according to claim 1 is characterized by: The stacking station still has a supporting mechanism, which includes a supporting plate and a supporting drive cylinder that drives the supporting plate to move horizontally to the middle of the stacking station.

8. The conveying assembly of the high-density integrated circuit lead frame high-speed tinning production line according to claim 7 is characterized by: The support plate comprises a first support portion in a "[" shape and a second support portion in a "mountain" shape, and the first support portion and the second support portion are arranged transversely to each other.

9. The conveying assembly of the high-density integrated circuit lead frame high-speed tinning production line according to claim 8, characterized in that: The top of the second guard plate is provided with a plate-penetrating groove for the support plate to pass through.

10. The conveying assembly of the high-density integrated circuit lead frame high-speed tinning production line according to claim 1, characterized in that: The stacking station is provided with a sheet lifting mechanism for gradually lifting the stacked lead frames.

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