Lead frame deburring device

Abstract

A deburring device for a lead frame comprises a workbench and the lead frame. A mounting seat is arranged on the workbench; the mounting seat is connected with a clamping seat, the lead frame is provided with a plurality of mounting holes, and the clamping seat is rotatably connected to the mounting seat; the clamping seat is connected with a positioning shaft sleeve; the lead frames are inserted into the positioning shaft sleeves corresponding to the lead frames through the mounting holes so as to be sleeved on the positioning shaft sleeves, and the positioning shaft sleeves are in threaded connection with limiting devices for limiting the lead frames; the limiting device comprises a screw rod, a spring and a limiting sleeve seat; the screw rod is in threaded connection with the positioning shaft sleeve, and the outer side of the screw rod is connected with an outer connecting sleeve; the spring and the limiting sleeve base are connected into the outer connecting sleeve in a sliding mode, and the spring is located between the outer connecting sleeve and the limiting sleeve base. And a positioning device is connected between the mounting seat and the clamping seat. According to the utility model, the spring adopts elastic clamping, so that the lead frame is not easy to damage.

Description

Technical Field

[0001] The utility model relates to lead frame processing equipment, in particular to a lead frame deburring device. Background Art

[0002] As the chip carrier of integrated circuits, the lead frame is a key structural component that uses bonding materials (gold wire, aluminum wire, copper wire) to achieve electrical connection between the internal circuit lead ends of the chip and the external leads to form an electrical circuit. It acts as a bridge connecting to external wires. Lead frames are required in most semiconductor integrated blocks and are an important basic material in the electronic information industry.

[0003] Many existing lead frames are stamped and generally have burrs on their outer edges. Therefore, a deburring device is generally required to remove the burrs on the lead frames. During the deburring process, the lead frames are first clamped and fixed, and then the burrs are polished. However, existing deburring devices generally use a rigid clamping method for the lead frames. If the clamping force is too strong, the lead frames are easily damaged. Utility Model Content

[0004] The utility model aims to solve the technical problem of providing a deburring device for a lead frame adopting elastic clamping.

[0005] In order to solve the above technical problems, the technical solution of the lead frame deburring device of the present invention is:

[0006] 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole

[0007] The positioning device includes a positioning bolt; four positioning screw holes are opened on the rear side of the clamping seat and are evenly distributed with the clamping seat rotation axis as the axis; the bottom end of the positioning bolt passes through the mounting seat and is threadedly connected to one of the positioning screw holes for positioning.

[0008] The rear end of the clamping seat is connected to a rotating shaft; the clamping seat is rotatably connected to the mounting seat through the rotating shaft; the rear end of the rotating shaft is connected to a turning handle.

[0009] The front side of the workbench is connected to a base body; the rear side of the base body is connected to a vertical guide rail; the vertical guide rail is vertically slidably connected to a horizontal connecting seat; the rear side of the base body is also rotatably connected to a vertical screw; the vertical screw is threadedly connected to the horizontal connecting seat; a first motor is installed on the upper end of the base body; the first motor is connected to the vertical screw; the horizontal connecting seat is connected to a horizontal slide rail; the horizontal slide rail is horizontally slidably connected to a fixed seat; a grinding device for deburring the lead frame is installed on the fixed seat; the horizontal connecting seat is also rotatably connected to a horizontal screw; the horizontal screw is threadedly connected to the fixed seat; the side of the horizontal connecting seat is connected to a second motor; the second motor is connected to the horizontal screw.

[0010] The grinding device includes a third motor and a grinding wheel; the third motor is fixed on a fixing seat, and the end of the rotating shaft of the third motor passes through the fixing seat and is connected to the grinding wheel.

[0011] The technical effect achieved by the utility model is as follows: the utility model provides a lead frame deburring device on the clamping of the lead frame, the lead frame is inserted into the positioning sleeve corresponding to itself through the mounting hole and is sleeved on the positioning sleeve, and the positioning sleeve is threadedly connected with a limiting device for limiting the lead frame, and the limiting device presses the limiting sleeve seat downward by rotating the screw until the limiting sleeve seat presses the lead frame between the clamping seat and the limiting sleeve seat. The utility model adopts elastic clamping through the spring, which is not easy to damage the lead frame; and when it is necessary to replace the deburring surface of the other side of the lead frame, the positioning bolt is unscrewed, and the clamping seat can be rotated to rotate it so that the side to be deburred faces upward, so that it can be deburred by the grinding wheel, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0013] Figure 1 This is a structural diagram of a lead frame deburring device of the utility model;

[0014] Figure 2 yes Figure 1 A magnified view of part A;

[0015] Figure 3 This is a schematic diagram after the lead frame is fixed;

[0016] Figure 4 It is a connection diagram of the limit device;

[0017] Figure 5yes Figure 4 A magnified view of part B;

[0018] Figure 6 It is a connection diagram of the clamping seat;

[0019] Figure 7 yes Figure 6 Magnified view of part C;

[0020] Figure 8 yes Figure 3 Exploded diagram;

[0021] Figure 9 yes Figure 8 Enlarged view of part D. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] See Figures 1 to 9 .

[0024] A lead frame deburring device includes a workbench 1 and a lead frame 2; a mounting seat 3 is provided on the workbench 1, and a clamping seat 4 for clamping the lead frame 2 is connected to the mounting seat 3; a plurality of mounting holes 5 are opened on the lead frame 2, and the clamping seat 4 is rotatably connected to the mounting seat 3. Specifically, four mounting holes 5 are opened on the lead frame 2; the clamping seat 4 is connected to a positioning sleeve 6 corresponding to the mounting hole 5, and each mounting hole 5 is provided with a corresponding positioning sleeve 6, the lead frame 2 is inserted into the positioning sleeve 6 corresponding to itself through the mounting hole 5 and is sleeved on the positioning sleeve 6, and the positioning sleeve 6 is threadedly connected with A limiting device for limiting the position of the lead frame 2; specifically, the limiting device includes a screw 7, a spring 8 and a limiting sleeve 9, the screw 7 is threadedly connected to the positioning sleeve 6, and the outer side of the screw 7 is connected to the outer connection sleeve 10; the spring 8 and the limiting sleeve 9 are slidably connected to the outer connection sleeve 10, and the spring 8 is located between the outer connection sleeve 10 and the limiting sleeve 9; the limiting sleeve 9 presses down the lead frame 2 through the spring 8 to fix the lead frame 2; specifically, in the installation of the lead frame 2, first insert the lead frame 2 into the positioning sleeve 6 corresponding to itself through the mounting hole 5 and put it on the positioning sleeve 6, then screw the limiting device, refer to Figure 4 、 5 By rotating the external connection sleeve 10 to rotate the screw 7, the space between the external connection sleeve 10 and the clamping seat 4 gradually becomes smaller. At this time, the spring 8 is continuously compressed, and the pressure of the spring 8 on the limiting sleeve 9 is continuously increased, thereby pressing the lead frame 2 between the limiting sleeve 9 and the clamping seat 4, and the lead frame 2 is fixed. The utility model adopts elastic clamping in the clamping of the fixed lead frame 2 through the design of the spring 8, so the lead frame 2 is not easily damaged.

[0025] A positioning device for limiting the clamping seat 4 is connected between the mounting seat 3 and the clamping seat 4. Specifically, the positioning device includes a positioning bolt 11; four positioning screw holes 12 are opened on the rear side of the clamping seat 4 and are evenly distributed and rotated around the rotation axis of the clamping seat 4. The bottom end of the positioning bolt 11 passes through the mounting seat 3 and is threadedly connected to one of the positioning screw holes 12 for positioning; the rear end of the clamping seat 4 is connected to a rotating shaft 13, and the clamping seat 4 is rotatably connected to the mounting seat 3 through the rotating shaft 13. The rear end of the rotating shaft 13 is connected to a turning handle 14; Figure 3 、 6 7. When deburring the lead frame 2, the utility model generally grinds the upward surface of the lead frame 2. When the grinding surface needs to be replaced, the positioning bolt 11 is unscrewed, the clamping seat 4 is rotated 90 degrees, and then the positioning bolt 11 is screwed on again to complete the replacement of the grinding surface. By providing four positioning screw holes 12, the four surfaces of the lead frame 2 can be replaced.

[0026] The front side of the workbench 1 is connected to a base body 21, and the rear side of the base body 21 is connected to a vertical guide rail 22. A horizontal connecting seat 23 is vertically slidably connected to the vertical guide rail 22. A vertical screw rod 24 is also rotatably connected to the rear side of the base body 21. The vertical screw rod 24 is threadedly connected to the horizontal connecting seat 23. A first motor 25 is installed on the upper end of the base body 21. The first motor 25 is connected to the vertical screw rod 24. The horizontal connecting seat 23 is connected to a horizontal slide rail 31. A fixed seat 32 is horizontally slidably connected to the horizontal slide rail 31. The fixed seat A grinding device for deburring the lead frame 2 is installed on 32; specifically, the grinding device includes a third motor 41 and a grinding wheel 42, the third motor 41 is fixed on the fixed seat 32, and the end of the rotating shaft of the third motor 41 passes through the fixed seat 32 and is connected to the grinding wheel 42; the transverse connecting seat 23 is also rotatably connected to a transverse screw 33, and the transverse screw 33 is threadedly connected to the fixed seat 32; a second motor 34 is connected to the side of the transverse connecting seat 23, and the second motor 34 is connected to the transverse screw 33.

[0027] When using this utility model, refer to Figure 1, the lead frame 2 is square, so there are four sides that need to be deburred. First, the lead frame 2 is fixed by the limit device, and the clamping seat 4 is positioned by the positioning bolt 11. Then, the first motor 25 is turned on. The first motor 25 drives the vertical screw 24 to rotate, thereby controlling the vertical movement of the horizontal connecting seat 23 until the grinding wheel 42 is located above the lead frame 2, and ensures that the grinding wheel 42 can grind the upward surface of the lead frame 2. Then, the third motor 41 is turned on. The third motor 41 controls the rotation of the grinding wheel 42, and the grinding wheel 4 2 starts working, and then turns on the second motor 34. The second motor 34 controls the rotation of the transverse screw 33 to control the transverse movement of the fixing base 32, so that the grinding wheel 42 grinds all the upward surfaces of the lead frame 2 to remove burrs. After removing the burrs, unscrew the positioning bolt 11, rotate the clamping base 4 90 degrees, and then screw on the positioning bolt 11. Repeat the above operation method to grind the now upward surface of the lead frame 2. Finally, repeat the process of changing the upward grinding surface of the lead frame 2 until all four sides of the lead frame 2 are deburred.

Claims

1. A lead frame deburring device, comprising a workbench (1) and a lead frame (2); a mounting seat (3) is provided on the workbench (1); a clamping seat (4) for clamping the lead frame (2) is connected to the mounting seat (3); a plurality of mounting holes (5) are provided on the lead frame (2), and the device is characterized in that: The clamping seat (4) is rotatably connected to the mounting seat (3); the clamping seat (4) is connected to a positioning sleeve (6) corresponding to the mounting hole (5), and each mounting hole (5) is provided with a corresponding positioning sleeve (6); the lead frame (2) is inserted into the positioning sleeve (6) corresponding to itself through the mounting hole (5) and is sleeved on the positioning sleeve (6), and the positioning sleeve (6) is threadedly connected to a limiting device for limiting the position of the lead frame (2); the limiting device includes a screw (7), a spring (8) and a limiting screw. The invention relates to a positioning sleeve seat (9); the screw rod (7) is threadedly connected to the positioning sleeve (6), and the outer side of the screw rod (7) is connected to an external connection sleeve (10); the spring (8) and the limiting sleeve seat (9) are slidably connected in the external connection sleeve (10), and the spring (8) is located between the external connection sleeve (10) and the limiting sleeve seat (9); the limiting sleeve seat (9) presses down the lead frame (2) through the spring (8) to fix the lead frame (2); a positioning device for limiting the clamping seat (4) is connected between the mounting seat (3) and the clamping seat (4).

2. The lead frame deburring device according to claim 1, wherein: The positioning device includes a positioning bolt (11); four positioning screw holes (12) are opened on the rear side of the clamping seat (4) and are evenly distributed and rotate around the rotation axis of the clamping seat (4); the bottom end of the positioning bolt (11) passes through the mounting seat (3) and is threadedly connected to one of the positioning screw holes (12) to achieve positioning.

3. The lead frame deburring device according to claim 1, wherein: The rear end of the clamping seat (4) is connected to a rotating shaft (13); the clamping seat (4) is rotatably connected to the mounting seat (3) via the rotating shaft (13); the rear end of the rotating shaft (13) is connected to a turning handle (14).

4. The lead frame deburring device according to claim 1, wherein: The front side of the workbench (1) is connected to a base body (21); the rear side of the base body (21) is connected to a vertical guide rail (22); a horizontal connecting seat (23) is vertically slidably connected to the vertical guide rail (22); the rear side of the base body (21) is also rotatably connected to a vertical screw rod (24); the vertical screw rod (24) is threadedly connected to the horizontal connecting seat (23); a first motor (25) is installed on the upper end of the base body (21); the first motor (25) is connected to the vertical screw rod (24); the horizontal connecting seat (23) is connected to a transverse slide rail (31); a fixed seat (32) is connected to the transverse slide rail (31) in a transverse sliding manner; a grinding device for deburring the lead frame (2) is installed on the fixed seat (32); a transverse screw rod (33) is also rotatably connected to the transverse connecting seat (23); the transverse screw rod (33) is threadedly connected to the fixed seat (32); a second motor (34) is connected to the side of the transverse connecting seat (23); the second motor (34) is connected to the transverse screw rod (33).

5. The lead frame deburring device according to claim 4, characterized in that: The grinding device comprises a third motor (41) and a grinding wheel (42); the third motor (41) is fixed on a fixing seat (32), and the end of the rotating shaft of the third motor (41) passes through the fixing seat (32) and is connected to the grinding wheel (42).

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