Lead frame conveying and positioning device

Abstract

The utility model provides a lead frame conveying and positioning device, which is used for conveying and positioning a lead frame, and comprises a linear mechanism arranged on one side of a conveying track in the length direction, and the movable end of the linear mechanism is connected with a guide seat; the rotating mechanism is arranged on the guide seat; the positioning mechanism comprises a positioning frame and a movable plate, a plurality of cylinders are vertically arranged on the positioning frame, the movable end of each vertical cylinder is connected with a deflector rod, one end of the movable plate is connected with the positioning frame, and the other end of the movable plate is connected with the rotating end of the rotating mechanism; the rotating mechanism is used for driving the positioning mechanism to rotate so that the positioning frame can rotate to be located above the conveying rail in parallel, or the shifting rod can rotate to the area outside the vertical projection of the conveying rail along with the positioning frame. According to the device, the lead frame can be conveyed on the conveying track, no redundant stroke exists in the conveying process, and the lead frame is effectively positioned in the conveying process.

Description

Technical Field

[0001] The present application belongs to the technical field of semiconductor packaging device manufacturing, and in particular, relates to a lead frame conveying and positioning device. Background Art

[0002] In the manufacturing process of semiconductor packaging devices, when installing a jumper on a lead frame, the lead frame is usually placed on a conveying track, and one side of the lead frame is pushed on the conveying track by a plurality of push rods arranged on the conveying track. When the lead frame moves to the correct position, the push rod moves back to the side of the lead frame to leave operating space for the equipment for installing the jumper. The equipment for installing the jumper absorbs the jumper and moves to the top of the lead frame, and presses down to install the jumper. After the installation is completed, the plurality of push rods arranged on the conveying track all move back, that is, the push rod stopped on the side of the lead frame with the jumper installed returns to the original position to push the next lead frame entering the jumper installation process. The lead frame with the jumper installed is pushed to the next process by the push rod that moves back with the above push rod. Such a lead frame conveying method requires the push rod to reciprocate along the conveying track, and the push rod has an extra stroke, which affects the efficiency of jumper installation, and the lead frame is not effectively positioned during the pushing process of the push rod. Utility Model Content

[0003] In order to solve the above-mentioned deficiencies of the prior art, the present application provides a lead frame conveying and positioning device, which can convey the lead frame on a conveying track without unnecessary travel during the conveying process, and can effectively position the conveyed lead frame.

[0004] In order to achieve the above purpose, the utility model adopts the following technologies:

[0005] A lead frame conveying and positioning device, used for conveying and positioning a lead frame on a conveying track, characterized in that it comprises:

[0006] The linear mechanism is arranged on one side of the conveying track in the length direction, and its movable end is connected to a guide seat;

[0007] A rotating mechanism is arranged on the guide seat;

[0008] The positioning mechanism includes a positioning frame and a movable plate. A plurality of cylinders are vertically arranged on the positioning frame. The movable ends of each vertical cylinder are connected to a lever. One end of the movable plate is connected to the positioning frame, and the other end is connected to the rotating end of the rotating mechanism.

[0009] The rotating mechanism is used to drive the positioning mechanism to rotate, so that the positioning frame rotates to be parallel to and above the conveying track, or the shifting rod rotates with the positioning frame to an area outside the vertical projection of the conveying track.

[0010] Furthermore, the rotating mechanism includes a rotating seat and a motor arranged on the guide seat, a driving gear is arranged at the driving end of the motor, a rotating shaft is connected to the other end of the movable plate, the rotating shaft rotates with the rotating seat, a driven gear is arranged on the peripheral side of one end of the rotating shaft facing the motor, and the driving gear is meshed with the driven gear.

[0011] Furthermore, when the positioning frame is located parallel to and above the conveying track, the position of at least one shifting rod corresponds to the position of the guide hole of the lead frame to be conveyed on the conveying track.

[0012] Furthermore, the position of at least one shifting rod corresponds to the position of the rear end surface of the lead frame to be transported on the transport track.

[0013] The beneficial effects of the utility model are:

[0014] By setting the positioning mechanism and the rotating mechanism, the position of the lever corresponds to the rear end surface of the lead frame, and with the cooperation of the linear mechanism, the conveying function of the lead frame to be conveyed on the conveying track is realized; on this basis, the lever is also corresponding to the position of the guide hole of the lead frame, which can realize the positioning function of the lead frame during the conveying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure when the positioning frame of the device of the embodiment of the present application is located parallel to the conveying track.

[0016] Figure 2 It is a structural schematic diagram of the positioning frame of the device of the embodiment of the present application when it rotates to an area outside the vertical projection of the conveying track.

[0017] Figure 3 yes Figure 1 A magnified view of the part in the figure.

[0018] Figure 4 yes Figure 1 A magnified view of the part B in the figure.

[0019] Figure 5 It is a cross-sectional view of the lead frame of the device according to the embodiment of the present application along the conveying direction.

[0020] Figure numerals: 1-conveying track, 11-limiting platform, 2-linear mechanism, 21-guide seat, 22-rotating seat, 3-positioning mechanism, 31-positioning frame, 32-movable plate, 33-rotating shaft, 34-cylinder, 35-shift rod, 4-lead frame, 41-guide hole, 5-rotating mechanism, 51-motor, 52-driving gear, 53-driven gear. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings, but the embodiments described in the utility model are only part of the embodiments of the utility model, rather than all the embodiments.

[0022] The embodiment of the present application provides a lead frame conveying and positioning device, which is used to convey and position a lead frame 4 on a conveying track 1. Figure 1 and Figure 2 As shown, it includes: a linear mechanism 2, a rotating mechanism 5, and a positioning mechanism 3. The linear mechanism 2 is arranged on one side of the length direction of the conveying track 1, and its movable end is connected to a guide seat 21; the rotating mechanism 5 is arranged on the guide seat 21; the positioning mechanism 3 is as shown in FIG. Figure 3 As shown, it includes a positioning frame 31 and a movable plate 32. A plurality of cylinders 34 are vertically arranged on the positioning frame 31. The movable ends of the vertical cylinders 34 are connected to the levers 35. One end of the movable plate 32 is connected to the positioning frame 31, and the other end is connected to the rotating end of the rotating mechanism 5. The rotating mechanism 5 is as shown in FIG. Figure 1 and Figure 2 As shown, it is used to drive the positioning mechanism 3 to rotate, so that the positioning frame 31 rotates to be parallel to the conveying track 1, or the lever 35 rotates with the positioning frame 31 to the area outside the vertical projection of the conveying track 1; Figure 1 As shown, the conveying track 1 is provided with limiting platforms 11 on both sides along its length direction, and the limiting platforms 11 limit the displacement of the lead frame 4 in a direction perpendicular to the length direction of the conveying track 1 , and the lead frame 4 is conveyed between the limiting platforms 11 on both sides.

[0023] In practical applications, such as Figure 1 and Figure 2As shown, a plurality of guide seats 21, rotating mechanisms 5, and positioning mechanisms 3 are arranged in an array along the direction of the linear mechanism 2. When the lead frame 4 is placed on the conveying track, the rotating mechanism 5 causes the positioning frame 31 in the positioning mechanism 3 to rotate to be parallel to and above the lead frame 4 on the conveying track 1. At this time, the cylinder 34 on the positioning mechanism 3 operates, so that the lever 35 connected to its movable end acts on the lead frame 4; then, the movable end of the linear mechanism 2 drives the guide seat 21 to move. Since the rotating mechanism 5 is arranged on the guide seat 21, one end of the movable plate 32 is connected to the rotating end of the rotating mechanism 5, so that the positioning mechanism 3 moves, and the lever 35 acts on the lead frame 4, and finally drives the lead frame 4 to move on the conveying track 1; the linear mechanism 2 stops running, and the lever 35 moves the lead frame 4 Effective positioning is performed to place the lead frame 4 in the correct position, the cylinder 34 operates to cause the lever 35 to withdraw from the action on the lead frame 4, and under the action of the rotating mechanism 5, the lever 35 is rotated with the positioning frame 31 to an area outside the vertical projection of the conveying track 1, leaving operating space for the equipment for installing the jumper; after the jumper is installed, under the action of the rotating mechanism 5, the positioning frame 31 in the positioning mechanism 3 is rotated again to be parallel to the upper part of the lead frame 4 on the conveying track 1, the cylinder 34 operates to drive the lever 35 to continue to act on the lead frame 4, the linear mechanism 2 operates to drive the positioning frame 31, so that the lead frame 4 below it moves on the conveying track 1 and is brought into the next process.

[0024] Specifically, in order to realize the function that the rotating mechanism 5 can drive the positioning mechanism 3 to rotate, as Figure 4 As shown, this embodiment adopts the mode of motor transmission and gear meshing, and other rotating mechanisms can also be used to realize the rotation function of the positioning mechanism 3. The rotating mechanism 5 includes a rotating seat 22 and a motor 51 arranged on the guide seat 21. The driving end of the motor 51 is provided with a driving gear 52, and the other end of the movable plate 32 is connected with a rotating shaft 33. The rotating shaft 33 rotates with the rotating seat 22. A driven gear 53 is arranged on the circumference of one end of the rotating shaft 33 facing the motor 51, and the driving gear 52 meshes with the driven gear 53. When the motor 51 drives the driving gear 52 to rotate, the driving gear 52 meshes with the driven gear 53 arranged on the circumference of one end of the rotating shaft 33 facing the motor 51, and under the rotation cooperation of the rotating shaft 33 and the rotating seat 22, the function of the rotating mechanism 5 driving the positioning mechanism 3 to rotate is realized.

[0025] like Figure 3 As shown, the lead frame 4 is provided with a plurality of guide holes 41, which are used to guide the resin or glue in the subsequent plastic encapsulation process. When the positioning frame 31 is parallel to and above the conveying track 1, the lever 35 on the positioning frame 31 can act on the lead frame 4 to convey and position the lead frame 4.

[0026] Specifically, Figure 5 As shown, when the positioning frame 31 is parallel to and located above the conveying track 1, each vertical cylinder 34 operates to drive the lever 35 to move downward, wherein at least one lever 35 extends into the guide hole 41 of the lead frame 4 to be conveyed on the conveying track 1, and is close to the inner wall of the guide hole 41 on the side close to the movable plate 32; at least one other lever 35 moves downward and stops at a position close to the rear end face of the lead frame 4 to be conveyed on the conveying track 1; the linear mechanism 2 operates, and the lever 35 moves with the positioning frame 31, and at least one lever 35 is close to the rear end face of the lead frame 4, and presses against the lead frame 4 to move the lead frame 4; after the movement is completed, at least one lever 35 is close to the inner wall of the guide hole 41 on the side close to the movable plate 32, pressing against the lead frame 4 that continues to move in the conveying direction due to inertia, that is, the lead frame 4 is effectively positioned.

[0027] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application.

Claims

1. A lead frame conveying and positioning device, used to convey and position a lead frame (4) on a conveying track (1), characterized in that: include: A linear mechanism (2) is arranged on one side of the conveying track (1) in the length direction, and a movable end thereof is connected to a guide seat (21); A rotating mechanism (5) is disposed on the guide seat (21); The positioning mechanism (3) comprises a positioning frame (31) and a movable plate (32). A plurality of cylinders (34) are vertically arranged on the positioning frame (31). The movable ends of the vertical cylinders (34) are connected to levers (35). One end of the movable plate (32) is connected to the positioning frame (31), and the other end is connected to the rotating end of the rotating mechanism (5). The rotating mechanism (5) is used to drive the positioning mechanism (3) to rotate, so that the positioning frame (31) rotates to be parallel to and above the conveying track (1), or the lever (35) rotates with the positioning frame (31) to an area outside the vertical projection of the conveying track (1).

2. A lead frame conveying and positioning device according to claim 1, characterized in that: The rotating mechanism (5) comprises a rotating seat (23) and a motor (51) arranged on the guide seat (21); a driving gear (52) is arranged at a driving end of the motor (51); a rotating shaft (33) is connected to the other end of the movable plate (32); the rotating shaft (33) and the rotating seat (23) are rotatably matched; a driven gear (53) is arranged on the circumference of one end of the rotating shaft (33) facing the motor (51); and the driving gear (52) meshes with the driven gear (53).

3. The lead frame conveying and positioning device according to claim 1, characterized in that: When the positioning frame (31) is located parallel to and above the conveying track (1), the position of at least one lever (35) corresponds to the position of the guide hole (41) of the lead frame (4) to be conveyed on the conveying track (1).

4. A lead frame conveying and positioning device according to claim 3, characterized in that: In addition, the position of at least one shifting rod (35) corresponds to the position of the rear end surface of the lead frame (4) to be transported on the transport track (1).

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