Lead frame feeding mechanism

Abstract

The utility model discloses a lead frame feeding mechanism which comprises a material frame, a carrying assembly and a feeding assembly, the material frame is used for loading lead frames, the carrying assembly can obtain the lead frames in the material frame and can transfer the lead frames to the feeding assembly, and the feeding assembly is used for conveying the lead frames to the downstream; the lead frame is carried in a reciprocating mode through the carrying assembly, the lead frame in the material frame can be rapidly transferred to the feeding assembly, meanwhile, the lead frame is delivered to the downstream through the feeding assembly, and the lead frame can be rapidly transferred to a welding station; the carrying assembly is matched with the feeding assembly, the feeding station and the welding station of the lead frame can be connected in series, and therefore the lead frame can be conveyed continuously and efficiently.

Description

Technical Field

[0001] The present application relates to the technical field of stacked capacitor manufacturing equipment, and in particular to a lead frame feeding mechanism. Background Art

[0002] The stacked capacitor is made of stacked foils, and multiple stacked capacitors are welded on a lead frame, which serves as the capacitor electrode.

[0003] When preparing stacked capacitors, it is necessary to first supply the lead frame to the welding station, and then weld the foil layer by layer on the lead frame at the welding station. In traditional equipment, workers are usually required to deliver the lead frame one by one to ensure that the lead frame enters the welding station in a preset posture. This material loading method relies on manual labor, is time-consuming, labor-intensive and inefficient. Summary of the invention

[0004] The purpose of the present application is to overcome the deficiencies in the prior art and provide a lead frame feeding mechanism.

[0005] To achieve the above technical objectives, the present application provides a lead frame loading mechanism, including: a material frame for loading lead frames; a conveying assembly for transferring the lead frames in the material frame; and a feeding assembly for conveying the lead frames downstream; wherein the conveying assembly can obtain the lead frames in the material frame and can transfer the lead frames to the feeding assembly.

[0006] Furthermore, the lead frame loading mechanism also includes a lifting component, which is used to drive the material frame to perform lifting movements so that the handling component can obtain the lead frame in the material frame.

[0007] Furthermore, the lead frame feeding mechanism also includes a first detection member, and the first detection member is used to detect the storage status in the material frame.

[0008] Furthermore, the transport component includes: a transport piece for contacting the lead frame; a first drive component for driving the transport piece to and from the material frame and the feeding component; and a second drive component for driving the transport piece to perform lifting movements so that the transport piece can pick up or release the lead frame.

[0009] Furthermore, the transporting member adopts a suction cup.

[0010] Furthermore, the lead frame feeding mechanism also includes a second detection member, and the second detection member is used to detect whether there is a lead frame on the transport member.

[0011] Furthermore, the feeding assembly includes: a receiving platform for receiving the lead frame; and a conveying mechanism for driving the lead frame on the receiving platform to move downstream.

[0012] Furthermore, the material receiving platform includes: a material receiving block for receiving the lead frame; two guide blocks, the material receiving block is arranged between the two guide blocks and is spaced apart from the guide blocks; wherein the material receiving block is lower than the guide blocks, so that the portion of the material receiving platform for accommodating the lead frame is concave.

[0013] Furthermore, the conveying mechanism includes: a pushing member capable of being inserted into the gap between the receiving block and the guide block to contact the lead frame; and a pushing driving member for driving the pushing member to move downstream so that the pushing member can push the lead frame downstream.

[0014] Furthermore, the lead frame feeding mechanism also includes a third detection member, and the third detection member is used to detect whether there is a lead frame on the material receiving platform.

[0015] The present application provides a lead frame loading mechanism, including a material frame, a conveying assembly and a feeding assembly. The material frame is used to load the lead frame. The conveying assembly can obtain the lead frame in the material frame and can transfer the lead frame to the feeding assembly. The feeding assembly is used to convey the lead frame downstream. The lead frame is reciprocated by the conveying assembly, so that the lead frame in the material frame can be quickly transferred to the feeding assembly. At the same time, the lead frame is delivered downstream by the feeding assembly, so that the lead frame can be quickly transferred to the welding station. The conveying assembly and the feeding assembly cooperate to connect the loading station and the welding station of the lead frame in series, so as to continuously and efficiently transport the lead frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a lead frame feeding mechanism provided in this application;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure of the material frame and lifting mechanism of the middle lead frame feeding mechanism;

[0018] Figure 3 for Figure 1 A schematic diagram of the structure of the handling assembly of the lead frame feeding mechanism;

[0019] Figure 4 for Figure 1 Schematic diagram of the structure of the feeding assembly of the lead frame feeding mechanism. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0021] The present application provides a lead frame loading mechanism, including: a material frame 10, used to load lead frames; a conveying component 20, used to transfer the lead frames in the material frame 10; and a feeding component 30, used to convey the lead frames downstream; wherein the conveying component 20 can obtain the lead frames in the material frame 10 and can transfer the lead frames to the feeding component 30.

[0022] The material frame 10 can be loaded with multiple lead frames to facilitate the continuous operation of the loading mechanism. The handling component 20 can be a mechanism that can both obtain the lead frame and transfer the lead frame, such as a manipulator, a robot, and an overhead crane. The feeding component 30 can be a motorized conveying mechanism such as a conveyor belt, a conveyor roller, and a conveyor platform, or a mechanism such as a slide and a traction clamp.

[0023] The lead frame can be quickly transferred from the material frame 10 to the feeding assembly 30 by the transport assembly 20, and at the same time, the lead frame can be quickly transferred to the welding station by delivering the lead frame downstream through the feeding assembly 30. The transport assembly 20 and the feeding assembly 30 cooperate to connect the loading station and the welding station of the lead frame in series, so as to transport the lead frame continuously and efficiently.

[0024] Optionally, the material frame 10 is configured to be in the shape of a square frame with an open top.

[0025] The material frame 10 has a certain depth and can store a plurality of stacked lead frames at the same time.

[0026] Optionally, the shape of the material frame 10 is adapted to that of a lead frame.

[0027] For example, Figure 1 and Figure 2 In the embodiment shown, the lead frame is roughly sheet-shaped and rectangular, and the material frame 10 is set in a square frame shape with an open top; after the lead frame is placed in the material frame 10, the gap between the four walls of the material frame and the lead frame is extremely small. At this time, the material frame 10 can not only accommodate the lead frame, but also define the position and state of the lead frame in the material frame 10; in this way, the handling component 20 can accurately obtain the lead frame at the preset position, and it is conducive to the lead frame entering the feeding component 30 to have a unified posture, thereby facilitating the feeding component 30 to transport the lead frame and the downstream equipment to process the lead frame.

[0028] Optionally, the lead frame loading mechanism provided in the present application further includes a lifting assembly 40 , which is used to drive the material frame 10 to perform lifting movements, so that the handling assembly 20 can obtain the lead frame in the material frame 10 .

[0029] The lifting assembly 40 may adopt an automatic driving mechanism such as a cylinder or an electric cylinder, so that the material frame 10 is set at the movable end of the lifting assembly 40. When the lifting assembly 40 is working, the material frame 10 can be automatically lifted or lowered. Alternatively, the lifting assembly 40 may also adopt a manual adjustment mechanism such as a jackscrew or a telescopic rod, and be manually operated according to the lifting needs.

[0030] The present application does not limit the specific configuration of the lifting assembly 40 .

[0031] By setting up the lifting assembly 40, the material frame 10 can be raised after the lead frame in the material frame 10 is taken out, so that the material level in the material frame 10 remains unchanged. In this way, the conveying assembly 20 can uniformly grab the lead frame at a preset height position, which is conducive to simplifying the operation control of the conveying assembly 20.

[0032] Optionally, the lead frame feeding mechanism provided in the present application further includes a first detection member 51 , and the first detection member 51 is used to detect the storage status in the material frame 10 .

[0033] Among them, the first detection component 51 can adopt a photoelectric sensor to confirm whether there is a lead frame in the material frame 10 by reflecting or shooting light; or, the first detection component 51 can adopt a weight or pressure sensor to confirm whether there is a lead frame in the material frame 10 by the magnitude of the force, and can also confirm the change in the number of lead frames in the material frame 10 by the change in force; or, the first detection component 51 can adopt a CCD camera to confirm whether there is a lead frame in the material frame 10 and the change in the number of lead frames in the material frame 10 by shooting the picture.

[0034] The present application does not limit the specific configuration of the first detection member 51. The present application also does not limit the installation position of the first detection member 51, as long as it is convenient for the detection end of the first detection member 51 to act in the material frame 10.

[0035] By providing the first detection element 51 , the storage status of the lead frame in the material frame 10 can be confirmed in real time or as needed, so as to confirm the process progress and facilitate the replenishment of the material frame 10 .

[0036] In one embodiment, the transport component 20 includes: a transport member 21 for contacting the lead frame; a first driving component 22 for driving the transport member 21 to move back and forth between the material frame 10 and the feeding component 30; and a second driving component 23 for driving the transport member 21 to perform lifting and lowering movements so that the transport member 21 can receive or release the lead frame.

[0037] The transporting member 21 may adopt a mechanism such as a clamp, a suction cup, an electromagnet, etc. to facilitate contact and extraction of the lead frame. The first drive assembly 22 and the second drive assembly 23 may adopt a linear drive mechanism such as an electric cylinder and a linear module to realize linear motion according to the positional relationship between the loading station and the welding station, or adopt a motor in conjunction with a cam, a rocker, etc. to realize curved motion.

[0038] The present application does not limit the specific configuration of the transport assembly 20 .

[0039] In a specific embodiment, referring to Figure 1 and Figure 3 The first driving assembly 22 adopts a cylinder, and the piston rod of the first driving assembly 22 extends horizontally; the second driving assembly 23 adopts a cylinder, and the piston rod of the second driving assembly 23 extends vertically; the cylinder body of the second driving assembly 23 is fixedly arranged on the piston rod of the first driving assembly 22; the transporting member 21 is fixedly arranged on the piston rod of the second driving assembly 23. During transportation, the first driving component 22 drives the second driving component 23 to carry the transport member 21 to move horizontally toward the material frame 10 until the transport member 21 is facing the material frame 10 from top to bottom; the second driving component 23 drives the transport member 21 to move downward so that the transport member 21 can contact the lead frame in the material frame 10; after the transport member 21 obtains the lead frame, the second driving component 23 drives the transport member 21 to rise, and the first driving component 22 drives the second driving component 23 to return with the transport member 21 until the transport member 21 is facing the feeding component 30 from top to bottom; the second driving component 23 drives the transport member 21 to move downward again so that the transport member 21 can feed the lead frame into the feeding component 30; after the transport member 21 releases the lead frame, the first driving component 22 and the second driving component 23 cooperate to drive the transport member 21 to the material frame 10 again, and the feeding component 30 can transport the lead frame therein to the downstream.

[0040] Optionally, the transporting member 21 is a suction cup.

[0041] For details, please refer to Figure 1 and Figure 3 In the illustrated embodiment, the movable end of the second driving component 23 is provided with a long strip-shaped mounting plate, on which three suction cups are arranged at intervals, and the three suction cups are arranged along the length direction of the lead frame; when the conveying member 21 obtains the lead frame, the three suction cups can cooperate to suck three positions in the length direction of the lead frame, so that the conveying component 20 can transfer the lead frame smoothly and reliably.

[0042] Optionally, the lead frame loading mechanism provided in the present application further includes a second detection member 52 , and the second detection member 52 is used to detect whether there is a lead frame on the transport member 21 .

[0043] Among them, the second detection member 52 can adopt a photoelectric sensor to confirm whether there is a lead frame on the transport member 21 by reflecting or shooting light; or, the second detection member 52 can adopt a weight or pressure sensor to confirm whether there is a lead frame on the transport member 21 by the magnitude of the force, and can also confirm the number of lead frames obtained by the transport member 21 by the change of force; or, the second detection member 52 can adopt a CCD camera to confirm whether there is a lead frame on the transport member 21 and the number of lead frames obtained by the transport member 21 by shooting the picture.

[0044] The present application does not limit the specific configuration of the second detection member 52. The present application also does not limit the installation position of the second detection member 52, as long as it is convenient for the detection end of the second detection member 52 to act on the position where the conveying member 21 obtains the lead frame.

[0045] In one embodiment, the feeding assembly 30 includes: a receiving platform 31 for receiving the lead frame; and a conveying mechanism for driving the lead frame on the receiving platform 31 to move downstream.

[0046] In one embodiment, the conveying mechanism is a linear module, and the receiving platform 31 is arranged at the movable end of the conveying mechanism; after the lead frame is in place, the conveying mechanism is started to drive the receiving platform 31 and the lead frame thereon to move downstream.

[0047] In another embodiment, the conveying mechanism is a conveyor belt, which is embedded in the surface of the material receiving platform 31; after the lead frame is in place and on the belt surface of the conveyor belt, the conveying mechanism is started and the conveyor belt flows downstream, so that the lead frame can move downstream.

[0048] The present application does not limit the specific configuration of the material receiving platform 31 and the conveying mechanism.

[0049] Optionally, a limiting groove is provided on the surface of the material receiving platform 31, and the limiting groove extends straightly toward the downstream.

[0050] When the receiving platform 31 receives the lead frame, the lead frame is placed in the limiting groove, which can not only limit the position where the feeding assembly 30 receives the lead frame, but also limit the direction in which the conveying mechanism drives the lead frame to move, so that the lead frame can move quickly and accurately to the welding station.

[0051] Optionally, the width of the limiting groove is adapted to the width of the lead frame.

[0052] For example, the width of the limiting groove is equal to or slightly larger than the width of the lead frame. In this way, after the lead frame is placed in the limiting groove, it is restricted by the groove wall of the limiting groove and can only extend in a straight line along a preset direction, so that the lead frame on the receiving platform 31 has a uniform posture, which is convenient for limiting conveyance and downstream processing.

[0053] Optionally, the material receiving platform 31 includes: a material receiving block for receiving the lead frame; two guide blocks, the material receiving block is arranged between the two guide blocks and is spaced apart from the guide blocks; wherein the material receiving block is lower than the guide blocks, so that the portion of the material receiving platform 31 for accommodating the lead frame is concave.

[0054] For details, please refer to Figure 1 and Figure 4 In the illustrated embodiment, the receiving platform 31 is composed of three long blocks, and a guide block is provided on both sides of the receiving block. Since the receiving block is lower than the guide block, a guide groove is formed between the two guide blocks; when the receiving platform 31 receives the lead frame, the lead frame is on the receiving block, and the two sides of the lead frame in the width direction are limited by the guide blocks, and the lead frame can only move downstream along the guide groove. At this time, the guide groove is used as a limit groove, which can not only limit the position of the receiving platform 31 to receive the lead frame, but also limit the direction in which the conveying mechanism drives the lead frame to move, and also enable the lead frame on the receiving platform 31 to have a uniform posture.

[0055] Optionally, the distance between at least one guide block and the material receiving block is adjustable.

[0056] Among them, manual adjustment mechanisms such as screws, jackscrews, micrometers, etc. can be used to achieve the approach or distance between the guide block and the material receiving block, or automatic drive mechanisms such as cylinders and electric cylinders can be used to achieve the approach or distance between the guide block and the material receiving block.

[0057] The guide block and the material connection block are moved closer to each other, the distance between the two guide blocks is reduced, the width of the guide groove is reduced, and the guide groove can accurately limit the lead frame with a smaller width. The guide block and the material connection block are moved away from each other, the distance between the two guide blocks is increased, the width of the guide groove is increased, and the guide groove can accurately limit the lead frame with a larger width.

[0058] By adjusting the distance between the guide block and the receiving block and changing the groove width of the guide groove, the receiving platform 31 can receive, limit and guide lead frames of different width specifications.

[0059] Optionally, the conveying mechanism includes: a pushing member 32, which can be inserted into the gap between the receiving block and the guide block and contact the lead frame; and a pushing driving member 33, which is used to drive the pushing member 32 to move downstream so that the pushing member 32 pushes the lead frame downstream.

[0060] The pusher 32 can be any structure that can be inserted into the gap and can contact the lead frame, such as a sheet, a block, a rod, etc. The pusher drive 33 can be any mechanism that can drive the pusher 32 to move, such as a cylinder, an electric cylinder, etc.

[0061] The present application does not limit the specific configuration and installation method of the material pushing member 32 and the material pushing driving member 33 .

[0062] For details, please refer to Figure 1 and Figure 4 In the illustrated embodiment, two pieces are provided at the top of the pusher 32, and the two pieces can be respectively inserted into the gap between a guide block and a receiving block, and then contact the end of the lead frame away from the downstream. The pusher drive 33 adopts a cylinder, and the cylinder body of the pusher drive 33 is fixedly arranged on one side of the receiving platform 31, and the piston rod of the pusher drive 33 extends horizontally and is connected to the pusher 32; after the lead frame is placed in the guide groove, the piston rod of the pusher drive 33 moves, and the pusher 32 is driven to push the lead frame downstream along the extension direction of the gap. After a lead frame is pushed into the downstream welding station, the piston rod of the pusher drive 33 moves in the opposite direction, and the pusher 32 is driven to return along the extension direction of the gap, so that the receiving platform 31 can receive and pass the next lead frame.

[0063] Optionally, the lead frame loading mechanism provided in the present application further includes a third detection member 53 , and the third detection member 53 is used to detect whether there is a lead frame on the receiving platform 31 .

[0064] Among them, the third detection component 53 can adopt a photoelectric sensor to confirm whether there is a lead frame on the material receiving platform 31 by reflecting or shooting light; or, the third detection component 53 can adopt a weight or pressure sensor to confirm whether there is a lead frame on the material receiving platform 31 by the magnitude of force, and can also confirm the number of lead frames on the material receiving platform 31 by the change of force; or, the third detection component 53 can adopt a CCD camera to confirm whether there is a lead frame on the material receiving platform 31 and the number of lead frames on the material receiving platform 31 by shooting pictures.

[0065] The present application does not limit the specific configuration of the third detection member 53. The present application also does not limit the installation position of the third detection member 53, as long as the detection end of the third detection member 53 can be conveniently used to act on the part of the receiving platform 31 to receive the lead frame.

[0066] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A lead frame feeding mechanism, characterized in that: include: A material frame (10) for loading a lead frame; A transport assembly (20) for transporting the lead frame in the material frame (10); A feeding assembly (30) for conveying the lead frame downstream; The transport component (20) is capable of acquiring the lead frame in the material frame (10) and transferring the lead frame to the feeding component (30).

2. The lead frame feeding mechanism according to claim 1, characterized in that: It also comprises a lifting component (40), wherein the lifting component (40) is used to drive the material frame (10) to perform lifting movement, so as to facilitate the transport component (20) to obtain the lead frame in the material frame (10).

3. The lead frame feeding mechanism according to claim 1 or 2, characterized in that: It also comprises a first detection member (51), wherein the first detection member (51) is used to detect the storage condition in the material frame (10).

4. The lead frame feeding mechanism according to claim 1, characterized in that: The transport assembly (20) comprises: A transport member (21) for contacting the lead frame; A first driving assembly (22) for driving the transport member (21) to move back and forth between the material frame (10) and the material feeding assembly (30); The second driving component (23) is used to drive the transport member (21) to perform lifting movement, so that the transport member (21) can receive or release the lead frame.

5. The lead frame feeding mechanism according to claim 4, characterized in that: The transporting member (21) is a suction cup.

6. The lead frame feeding mechanism according to claim 4 or 5, characterized in that: It also includes a second detection member (52), wherein the second detection member (52) is used to detect whether a lead frame exists on the transport member (21).

7. The lead frame feeding mechanism according to claim 1, characterized in that: The feeding assembly (30) comprises: A material receiving platform (31) for receiving a lead frame; The conveying mechanism is used to drive the lead frame on the material receiving platform (31) to move downstream.

8. The lead frame feeding mechanism according to claim 7, characterized in that: The material receiving platform (31) comprises: A material receiving block, used for receiving a lead frame; Two guide blocks, the material receiving block is arranged between the two guide blocks and spaced apart from the guide blocks; The material receiving block is lower than the guide block, so that the portion of the material receiving platform (31) used to accommodate the lead frame is concave.

9. The lead frame feeding mechanism according to claim 8, characterized in that: The conveying mechanism comprises: A material pushing member (32) capable of being inserted into the gap between the material receiving block and the guide block and contacting the lead frame; The pusher driving member (33) is used to drive the pusher member (32) to move downstream, so that the pusher member (32) pushes the lead frame downstream.

10. The lead frame feeding mechanism according to any one of claims 7 to 9, characterized in that: It also comprises a third detection member (53), wherein the third detection member (53) is used to detect whether a lead frame exists on the material receiving platform (31).

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