A feed device for a soldering furnace

Abstract

The utility model provides a kind of feeding device of welding furnace, it is related to the field of semiconductor product welding equipment, including rack and the base plate of setting in the input side of welding furnace, base plate is connected with rack by guide rod in the way that can slide along horizontal direction, base plate is connected with reciprocating drive for driving its reciprocating motion, the middle part of the base plate is fixedly connected with push plate by connecting arm, connecting arm both sides are provided with connecting rod, one end of connecting rod is rotatably connected with base plate, the other end of connecting rod extends into welding furnace, connecting rod is provided with multiple interval arrangement's poking rod in welding furnace, poking rod is fixedly connected with connecting rod, the rotating drive of rotating and resetting for driving connecting rod is further connected with the rotating drive;The utility model can replace conveying belt to realize the intermittent feeding of carbon plate in welding furnace.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor product welding equipment technology, specifically to a feeding device for a welding furnace. Background Technology

[0002] Semiconductor device manufacturing uses lead frames as carriers, on which multiple packaging units are arrayed, undergoing multiple processes such as die bonding, soldering, injection molding, and forming. The soldering process is usually carried out in a soldering furnace. The carbon plate carrying the lead frame units after lamination is placed on the conveyor belt of the soldering furnace and then transported into the furnace for soldering. Such soldering furnaces usually occupy a large area.

[0003] Most existing welding furnaces adopt continuous walking beam welding furnaces, which have the advantage of smaller footprint compared to traditional welding furnaces. The furnace is equipped with multiple adjacent heating units, and the carbon plate is pushed forward intermittently and step by step by the feeding mechanism, thereby controlling the time of the carbon plate in each heating unit to achieve the purpose of welding.

[0004] Based on this, the present application aims to provide a feeding device suitable for the above-mentioned welding furnace. Utility Model Content

[0005] This invention addresses the aforementioned problems in the prior art by providing a feeding device for a welding furnace, replacing the existing conveyor belt feeding system to achieve intermittent feeding of the welding furnace.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A feeding device for a welding furnace includes a frame, characterized in that it includes a base plate disposed on the input side of the welding furnace, the base plate is connected to the frame in a horizontally slidable manner via a guide rod, the base plate is connected to a reciprocating drive for driving its reciprocating motion, a push plate is fixedly connected to the middle of the base plate via a connecting arm, connecting rods are disposed on both sides of the connecting arm, one end of the connecting rod is rotatably connected to the base plate, the other end of the connecting rod extends into the welding furnace, a plurality of spaced levers are disposed in the welding furnace corresponding to the connecting rod, the levers are fixedly connected to the connecting rod, and the connecting rod is also connected to a rotary drive for driving its rotation and resetting, the rotary drive drives the connecting rod to rotate so that the levers are raised.

[0007] Furthermore, the welding furnace is equipped with multiple adjacent heating units, and the lever on each connecting rod corresponds one-to-one with the heating unit.

[0008] Furthermore, the reciprocating drive component is a cylinder, the cylinder barrel of which is fixed to the frame, and its telescopic end is connected to the base plate.

[0009] Furthermore, the connecting rod is connected to the rotary drive component via a support rod, with one end of the support rod fixed to the connecting rod and the other end of the support rod hinged to the rotary drive component.

[0010] Furthermore, the rotary drive component is a vertically arranged cylinder, with one end hinged to the support rod and the other end hinged to the frame.

[0011] Furthermore, the connecting rod is rotatably connected to the carrier plate fixed to the substrate via a bearing.

[0012] Furthermore, the lever is fixed to the inside of the connecting rod by a connecting plate.

[0013] The beneficial effects of this utility model are: by setting a push plate and a lever, and the connection relationship between the two and the base plate, the rotary drive component and the reciprocating drive component, this utility model can realize the forward pushing of the carbon plate to be welded by using the push plate and the lever, so as to replace the existing conveyor belt device. The overall structure is simple and occupies little space. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a top view of the structure of this utility model (excluding the welding furnace);

[0016] Figure 3 This is a schematic diagram of the connection structure between the guide rod and the rotary drive component of this utility model;

[0017] Figure 4 This is a schematic diagram of the connection structure between the guide rod and the lever of this utility model;

[0018] Figure 5 This is a reference diagram showing the state of the guide rod and lever of this utility model;

[0019] In the diagram: 1. Frame, 2. Base plate, 21. Carrier plate, 3. Guide rod, 4. Reciprocating drive component, 5. Connecting arm, 6. Push plate, 7. Connecting rod, 71. Support rod, 8. Toggle lever, 9. Rotary drive component, 10. Connecting plate, 11. Welding furnace, 12. Carbon plate. Detailed Implementation

[0020] The principles and features of this utility model are described below. The embodiments given are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0021] As shown in the attached figures, the feeding device of the welding furnace in this embodiment includes a frame 1 and a base plate 2 disposed on the input side of the welding furnace 11. The base plate 2 is a vertical plate structure used to carry the overall mechanism forward for feeding or backward for resetting. The base plate 2 is connected to the frame 1 via a guide rod 3 in a manner that allows it to slide horizontally. The guide rod 3 is located on the side of the base plate closer to the welding furnace 11. The guide rod 3 is fixed to the base plate 2 and slidably connected to the frame 1. The base plate 2 is connected to a reciprocating drive 4 for driving its reciprocating motion. In this embodiment, the reciprocating drive 4 is a cylinder, the cylinder barrel of which is fixed to the frame 1, and its telescopic end is connected to the base plate 2. The reciprocating drive 4 can drive the base plate to reciprocate horizontally.

[0022] A push plate 6 is fixedly connected to the middle of the substrate 2 via a connecting arm 5. The push plate 6 is used to push the carbon plate 12 closest to the outermost side of the welding furnace input side. Connecting rods 7 are provided on both sides of the connecting arm 5. One end of the connecting rod 7 is rotatably connected to the substrate 2. Specifically, two carrier plates 21 are fixed inside the substrate 2, and the two connecting rods 7 are rotatably connected to the two carrier plates 21 via bearings. The other end of the connecting rod 7 extends into the welding furnace 11. The connecting rod 7 is provided with multiple spaced levers 8 in the welding furnace. The levers 8 are fixed to the inside of the connecting rod 7 via a connecting plate 10. The welding furnace is provided with multiple adjacent heating units. The levers 8 on each connecting rod 7 correspond one-to-one with the heating unit. The levers 8 are fixedly connected to the connecting rod 7. The connecting rod 7 is also connected to a rotary drive 9 for driving its rotation and resetting. The rotary drive 9 drives the connecting rod 7 to rotate so that the levers 8 are raised. In this embodiment, the connecting rod 7 is connected to the rotary drive component 9 via the support rod 71. One end of the support rod 71 is fixed to the connecting rod 7, and the other end of the support rod 71 is hinged to the rotary drive component 9. The rotary drive component 9 is a vertically arranged cylinder, one end of which is hinged to the support rod 71, and the other end is hinged to the frame 1.

[0023] The working process of this embodiment is as follows: The carbon plate 12 carrying the semiconductor component to be welded is placed on the working surface of the input side of the welding furnace 11, that is, in front of the pusher plate 6. The reciprocating drive 4 is activated to push the pusher plate 6 forward, that is, to push the carbon plate 12 into the welding furnace. Then, the pusher plate 6 is reset under the action of the reciprocating drive 4. During the forward movement of the pusher plate 6, the deflector plate 8 is in position. Figure 4 The state shown indicates that the carbon plate can be moved. Before resetting, the rotary drive 9 drives the connecting rod 7 to rotate, causing the lever 8 to rise to... Figure 5 The state shown is that the carbon plate 12, which is now located behind the dial plate 8, has moved aside.

[0024] Therefore, the complete operation process is as follows: the reciprocating drive 4 is activated, the base plate 2 moves forward, the push plate 6 moves forward accordingly, and the toggle plate 8 is in position. Figure 4As shown, the lever 8 moves forward so that it can reach the carbon plate located in front of it; the reciprocating drive 4 stops, the rotary drive 9 drives the connecting rod 7 to rotate, and the lever 8 rises to... Figure 5 The carbon plate is inaccessible; the reciprocating drive 4 resets, the base plate 2 resets, the push plate 6 and the toggle plate 8 move backward, the rotary drive 9 drives the connecting rod 7 to rotate and reset, and the toggle plate 8 falls to... Figure 4 This process is repeated to gradually push the carbon plate to each heating unit of the welding furnace, eliminating the need for a conveyor belt system in the welding furnace.

Claims

1. A feeding device for a welding furnace, comprising a frame (1), characterized in that, The system includes a base plate (2) located on the input side of the welding furnace. The base plate (2) is connected to the frame (1) via a guide rod (3) in a way that allows it to slide horizontally. The base plate (2) is connected to a reciprocating drive (4) for driving its reciprocating motion. A push plate (6) is fixedly connected to the middle of the base plate (2) via a connecting arm (5). Connecting rods (7) are provided on both sides of the connecting arm (5). One end of the connecting rod (7) is rotatably connected to the base plate (2), and the other end of the connecting rod (7) extends into the welding furnace. The connecting rod (7) is provided with multiple spaced levers (8) in the welding furnace. The levers (8) are fixedly connected to the connecting rod (7). The connecting rod (7) is also connected to a rotary drive (9) for driving its rotation and resetting. The rotary drive (9) drives the connecting rod (7) to rotate so that the levers (8) rise.

2. The feeding device for the welding furnace according to claim 1, characterized in that, The welding furnace is equipped with multiple adjacent heating units, and the lever (8) on each connecting rod (7) corresponds one-to-one with the heating unit.

3. The feeding device for the welding furnace according to claim 1, characterized in that, The reciprocating drive component (4) is a cylinder, whose cylinder barrel is fixed to the frame (1), and whose telescopic end is connected to the base plate (2).

4. The feeding device for the welding furnace according to claim 1, characterized in that, The connecting rod (7) is connected to the rotary drive (9) through the support rod. One end of the support rod is fixed to the connecting rod (7), and the other end of the support rod is hinged to the rotary drive (9).

5. The feeding device for the welding furnace according to claim 4, characterized in that, The rotary drive component (9) is a vertically arranged cylinder, with one end hinged to the support rod and the other end hinged to the frame (1).

6. The feeding device for the welding furnace according to claim 1, characterized in that, The connecting rod (7) is rotatably connected to the carrier plate fixed to the base plate (2) via a bearing.

7. The feeding device for the welding furnace according to claim 1, characterized in that, The lever (8) is fixed to the inside of the connecting rod (7) by the connecting plate (10).

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