Feeding mechanism for semiconductor chip rib cutting processing

Abstract

The invention relates to the technical field of semiconductor chip processing, in particular to a feeding mechanism for semiconductor chip rib cutting processing, which comprises a workbench, a feeding mechanism and a guide mechanism, and is characterized in that the feeding mechanism is arranged on the workbench; the guiding mechanisms are arranged on the two sides of the feeding mechanism and used for guiding chip feeding. The feeding mechanism comprises a mounting frame, a first motor and supports, the mounting frame is fixedly arranged on the workbench, supporting plates are fixedly arranged at the two ends of the top of the mounting frame, the supports are arranged at the two ends of the tops of the supporting plates, a rotating shaft is arranged between the supports, the first motor is arranged on the side walls of the supports, and the output end of the first motor is connected with the rotating shaft. Chain belts are rotationally arranged on the chain wheels, and ejection mechanisms are arranged in gaps between the chain belts and used for ejecting chips out. The distance between the guide plates can be adjusted according to the chip size requirement, the chain belt and the chip are accurately guided, and it is ensured that the chip is conveyed along a correct path.

Description

Technical Field

[0001] This invention relates to the field of semiconductor chip processing technology, specifically a feeding mechanism for semiconductor chip lead cutting processing. Background Technology

[0002] With the rapid development of the semiconductor industry, chips are evolving towards miniaturization and high performance, placing more stringent demands on the precision and efficiency of lead cutting. As a preliminary step in lead cutting, the accuracy and efficiency of feeding play a decisive role in the entire process. Precise feeding ensures accurate chip positioning during lead cutting, reducing the defect rate; efficient feeding improves production efficiency and reduces production costs.

[0003] Some simple mechanical feeding equipment lacks precise guidance and stable ejection of chips. During the chip conveying process, chip misalignment is prone to occur, and the chips are unstable during ejection, resulting in large processing errors. Summary of the Invention

[0004] The purpose of this application is to provide a feeding mechanism for semiconductor chip lead cutting processing, which solves the problems of chip misalignment and chip instability during chip ejection.

[0005] To achieve the above objectives, this application provides a feeding mechanism for semiconductor chip lead cutting processing, including a worktable, a feeding mechanism, and a guiding mechanism. The feeding mechanism is disposed on the worktable; the guiding mechanism is disposed on both sides of the feeding mechanism for guiding chip feeding; the feeding mechanism includes a mounting frame, a first motor, and a bracket. The mounting frame is fixedly disposed on the worktable, and support plates are fixedly disposed at both ends of the top of the mounting frame. The bracket is disposed at both ends of the top of the support plates, and a rotating shaft is disposed between the brackets. The first motor is disposed on the side wall of the bracket, and its output end is connected to the rotating shaft. Two sprockets are disposed on the rotating shaft, and a chain belt is rotatably disposed on the sprockets. An ejection mechanism is disposed in the gap between the chain belts for ejecting the chip.

[0006] According to one embodiment of the present invention, the guiding mechanism includes a support, a second motor, and a guide block. The support is fixedly disposed on both sides of the mounting frame, and a first lead screw is disposed between the supports. The second motor is disposed on the side wall of the support, and its output end is connected to the first lead screw. The threads at both ends of the first lead screw are in opposite directions. The guide block is disposed at both ends of the first lead screw, and a guide plate is disposed on the top of the guide block. The guide plate is used to guide both sides of the chain belt.

[0007] According to one embodiment of the present invention, two limiting blocks are provided on the first lead screw, and the limiting blocks are used to limit the guide block.

[0008] According to one embodiment of the present invention, a slide rail is horizontally arranged on the mounting bracket, one end of the bottom of the guide block is disposed on the first lead screw, and the other end is slidably engaged with the slide rail.

[0009] According to one embodiment of the present invention, the ejection mechanism includes a third motor and a top plate, a U-shaped frame is fixedly arranged on the worktable, the feeding mechanism is arranged between the U-shaped frames, the third motor is fixedly arranged in the middle of the U-shaped frames, and its output end is connected to the top plate.

[0010] According to one embodiment of the present invention, a blocking plate is provided on the U-shaped frame, the blocking plate extending upward along the gap between the two chain belts, the blocking plate being used to block the fed chips.

[0011] According to one embodiment of the present invention, a groove is provided on the blocking plate, and a slider is provided on the top plate, the slider slidingly engaging with the groove.

[0012] According to one embodiment of the present invention, a stabilizing seat is provided on the side wall of the U-shaped frame, a stabilizing groove is provided on the stabilizing seat, a second lead screw is provided in the stabilizing groove, a fourth motor is provided on the side wall of the stabilizing seat, the output end of the fourth motor is connected to the second lead screw, a separating ring is provided at the center of the second lead screw, the threads on both sides of the separating ring are in opposite directions, and stabilizing plates are provided at both ends of the second lead screw, the stabilizing plates being used to stabilize both sides of the ejected chip.

[0013] According to one embodiment of the present invention, the side wall of the U-shaped frame is provided with a receiving groove, and the size of the stabilizing plate is adapted to the receiving groove.

[0014] According to one embodiment of the present invention, a control panel is provided on the side wall of the workbench.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. During the conveying process, the second motor starts. According to the chip size requirements, the speed and direction of the second motor are adjusted through the control panel. The second motor drives the first lead screw to rotate. Since the threads at both ends of the first lead screw are in opposite directions, the guide blocks at both ends move towards or away from each other, adjusting the distance between the guide plates, and accurately guiding the chain and the chip to ensure that the chip is conveyed along the correct path.

[0017] 2. The fourth motor on the stabilizer of this invention drives the second lead screw to rotate. Because the threads on both sides of the separator ring are in opposite directions, the stabilizing plates at both ends of the second lead screw move towards or in opposite directions. When the chip is lifted by the top plate, the stabilizing plates move to both sides of the chip, providing stable support. This effectively prevents the chip from shaking or shifting during ejection, ensuring the chip is in a stable state before processing, improving the accuracy of lead cutting and product quality, and reducing processing errors and scrap rates caused by chip instability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the prior art and embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of a feeding mechanism for semiconductor chip lead cutting.

[0020] Figure 2 A schematic diagram of the three-dimensional structure for installing the feeding mechanism.

[0021] Figure 3 This is a schematic diagram of the ejector mechanism installation.

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the guiding mechanism.

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the ejection mechanism.

[0024] The attached diagram shows the following reference numerals: 1. Workbench; 2. Mounting frame; 21. Support plate; 22. Bracket; 23. Rotating shaft; 24. First motor; 25. Sprocket; 26. Chain belt; 3. Support; 31. Second motor; 32. First lead screw; 32. Guide block; 33. Guide plate; 34. Limit block; 4. Slide rail; 5. Third motor; 51. Top plate; 6. U-shaped frame; 61. Blocking plate; 611. Slide groove; 62. Receiving groove; 7. Stabilizing seat; 71. Stabilizing groove; 72. Second lead screw; 73. Separating ring; 74. Stabilizing plate; 75. Fourth motor; 8. Control panel. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] like Figures 1 to 5 As shown, a feeding mechanism for semiconductor chip lead cutting includes a worktable 1, a feeding mechanism, and a guiding mechanism. The feeding mechanism is disposed on the worktable 1. The guiding mechanism is disposed on both sides of the feeding mechanism for guiding chip feeding. The feeding mechanism includes a mounting frame 2, a first motor 24, and a bracket 22. The mounting frame 2 is fixedly disposed on the worktable 1. Support plates 21 are fixedly disposed at both ends of the top of the mounting frame 2. The bracket 22 is disposed at both ends of the top of the support plates 21, and a rotating shaft 23 is disposed between the brackets 22. The first motor 24 is disposed on the side wall of the bracket 22, and its output end is connected to the rotating shaft 23. Two sprockets 25 are disposed on the rotating shaft 23. A chain belt 26 is rotatably disposed on the sprockets 25. An ejection mechanism is disposed in the gap between the chain belts 26 for ejecting the chip.

[0027] The guiding mechanism includes a support 3, a second motor 31, and a guide block 32. The support 3 is fixedly disposed on both sides of the mounting frame 2. A first lead screw 32 is disposed between the supports 3. The second motor 31 is disposed on the side wall of the support 3, and its output end is connected to the first lead screw 32. The threads at both ends of the first lead screw 32 are in opposite directions. The guide block 32 is disposed at both ends of the first lead screw 32. A guide plate 33 is disposed on the top of the guide block 32. The guide plate 33 is used to guide both sides of the chain belt 26.

[0028] The second motor 31 drives the first lead screw 32 to rotate. Since the threads at both ends of the first lead screw 32 are in opposite directions, the guide blocks 32 at both ends move in opposite directions along the lead screw. The guide plates 33 on top of the guide blocks 32 move accordingly. The distance between the guide plates 33 can be adjusted according to the chip size to guide the conveyor belt 26 and the chip. This system can flexibly adapt to the feeding requirements of chips of different sizes, ensuring that the chip is always in the correct position during the conveying process, improving feeding accuracy, reducing chip offset and misalignment during the conveying process, and providing accurate chip positioning for subsequent processing.

[0029] Two limiting blocks 34 are provided on the first lead screw 32, which are used to limit the guide block 32. The limiting blocks 34 on the first lead screw 32 are fixed to the lead screw. When the guide block 32 moves on the lead screw, when it reaches the position of the limiting block 34, the limiting block 34 prevents the guide block 32 from moving further, limiting the movement range of the guide block 32; ensuring that the guide block 32 will not move excessively due to motor misoperation or other reasons, protecting the equipment structure, and at the same time ensuring that the adjustment range of the guide plate 33 is within a reasonable range, maintaining the accuracy of chip guidance.

[0030] The mounting bracket 2 has a horizontally mounted slide rail 4. One end of the bottom of the guide block 32 is attached to the first lead screw 32, and the other end is slidably engaged with the slide rail 4. The slide rail 4 on the mounting bracket 2 engages with the bottom end of the guide block 32. When the guide block 32 moves under the action of the first lead screw 32, its bottom slidably engages with the slide rail 4, providing additional support and guidance for the guide block 32. This increases the stability of the guide block 32's movement, prevents it from wobbling or shifting during movement, and further improves the accuracy and reliability of the guiding mechanism for chip guidance.

[0031] The ejection mechanism includes a third motor 5 and a top plate 51. A U-shaped frame 6 is fixedly installed on the worktable 1. The feeding mechanism is located between the U-shaped frames 6. The third motor 5 is fixedly installed in the middle of the U-shaped frames 6, and its output end is connected to the top plate 51.

[0032] The third motor 5 in the middle of the U-shaped frame starts, and its output end drives the top plate 51 to move upward. The top plate 51 lifts the chip placed on the chain belt 26 off the chain belt 26, making the chip detach from the chain belt 26 for subsequent processing operations. This achieves stable chip ejection, providing the necessary preparation for the bead cutting process. Moreover, the third motor 5 can be precisely controlled by the control panel 8, and the ejection distance can be adjusted according to different chip heights, making it highly adaptable.

[0033] A blocking plate 61 is provided on the U-shaped frame 6. The blocking plate 61 extends upward along the gap between the two chain belts 26. The blocking plate 61 is used to block the chip being fed.

[0034] A baffle plate 61 is disposed on the U-shaped frame and extends upward along the gap of the chain belt 26. When the chain belt 26 conveys the chip to the position of the U-shaped frame, the baffle plate 61 prevents the chip from continuing to move with the chain belt 26, causing the chip to stop at the designated position and wait for ejection. This ensures that the chip is ejected in the accurate position, avoiding the chip missing the ejection opportunity or being in an inaccurate position due to the continuous movement of the chain belt 26, thereby improving the accuracy of ejection and the consistency of processing.

[0035] The blocking plate 61 has a sliding groove 611, and the top plate 51 has a slider, which slides in cooperation with the sliding groove 611. The sliding groove 611 on the blocking plate 61 cooperates with the slider on the top plate 51. When the top plate 51 moves upward under the drive of the third motor 5, the slider slides within the sliding groove 611, providing guidance for the movement of the top plate 51. This ensures smooth movement of the top plate 51 during chip ejection, prevents the top plate 51 from tilting or shifting, ensures the chip is ejected vertically, improves ejection accuracy, and avoids damage to the chip due to unstable movement of the top plate 51.

[0036] A stabilizing seat 7 is provided on the side wall of the U-shaped frame 6. A stabilizing groove 71 is provided on the stabilizing seat 7. A second lead screw 72 is provided in the stabilizing groove 71. A fourth motor 75 is provided on the side wall of the stabilizing seat 7. The output end of the fourth motor 75 is connected to the second lead screw 72. A separating ring 73 is provided at the center of the second lead screw 72. The threads on both sides of the separating ring 73 are in opposite directions. Stabilizing plates 74 are provided at both ends of the second lead screw 72. The stabilizing plates 74 are used to stabilize the two sides of the ejected chip.

[0037] The fourth motor 75 on the stabilizing base 7 drives the second lead screw 72 to rotate. Because the threads on both sides of the separating ring 73 are in opposite directions, the stabilizing plates 74 at both ends of the second lead screw 72 move towards or away from each other. When the chip is lifted by the top plate 51, the stabilizing plates 74 move to both sides of the chip, providing stable support. This effectively prevents the chip from shaking or shifting during ejection, ensuring the chip is in a stable state before processing, improving the accuracy of lead cutting and product quality, and reducing processing errors and scrap rates caused by chip instability.

[0038] The U-shaped frame 6 has a receiving groove 62 on its side wall, and the size of the stabilizing plate 74 is adapted to the receiving groove 62. The receiving groove 62 on the side wall of the U-shaped frame is used to accommodate the stabilizing plate 74. When the stabilizing plate 74 is not working, it can be stored in the receiving groove 62 to avoid occupying too much space. When the chip needs to be stabilized, the stabilizing plate 74 extends out from the receiving groove 62.

[0039] A control panel 8 is installed on the side wall of the workbench 1. The control panel 8 on the side wall of the workbench 1 is connected to each motor. Operators can input commands through buttons, knobs, and other control elements on the control panel 8 to control the starting, stopping, speed, direction, and other operating parameters of each motor. This greatly facilitates operator control of the equipment, allowing for rapid adjustment of the equipment's operating status according to the feeding and processing requirements of different chips, improving work efficiency, reducing operational difficulty, and enhancing the equipment's versatility and adaptability.

[0040] The workbench 1 serves as the basic support platform for the entire feeding mechanism. The mounting frame 2 is fixed to the workbench 1. Support plates 21 at both ends of the top of the mounting frame 2 support the bracket 22. The rotating shaft 23 between the brackets 22 is connected to the output of the first motor 24, which drives the rotating shaft 23 to rotate. Two sprockets 25 on the rotating shaft 23 drive the chain belt 26, and an ejection mechanism is provided between the chain belts 26. A guiding mechanism is installed on both sides of the feeding mechanism, including a support 3, a second motor 31, a first lead screw 32, and guide blocks 32. The support 3 is fixed to both sides of the mounting frame 2. The threads of the first lead screw 32 are in opposite directions at both ends. The second motor 31 drives the first lead screw 32 to rotate, thereby moving the guide blocks 32 at both ends. The guide plate 33 on the top of the guide block 32 guides the chain belt 26. A U-shaped frame is fixed to the workbench 1, located on both sides of the feeding mechanism. A third motor 5 in the middle of the U-shaped frame drives the top plate 51 to move up and down, thus ejecting the chip. The baffle plate 61 on the U-shaped frame is used to block the fed chips. The slider on the top plate 51 cooperates with the slide groove 611 of the baffle plate 61 to ensure the stable movement of the top plate 51. The stabilizing seat 7 on the side wall of the U-shaped frame has a second lead screw 72, which is driven by the fourth motor 75. The stabilizing plates 74 at both ends of the second lead screw 72 can stabilize the two sides of the ejected chip. The side wall of the worktable 1 is equipped with a control panel 8, which is used to control the operation of various motors and other components.

[0041] The working principle of this invention is as follows: The chip to be processed is placed on the chain belt 26. The first motor 24 is started, which drives the rotating shaft 23 to rotate, thereby causing the sprocket 25 to rotate and driving the chain belt 26 to move, thus conveying the chip forward. During the conveying process, the second motor 31 of the guiding mechanism is started. According to the chip size requirements, the speed and direction of the second motor 31 are adjusted through the control panel 8. The second motor 31 drives the first lead screw 32 to rotate. Since the threads at both ends of the first lead screw 32 are in opposite directions, the guide blocks 32 at both ends move towards or in opposite directions, adjusting the distance between the guide plates 33 to accurately guide the chain belt 26 and the chip, ensuring that the chip is conveyed along the correct path. When the chip moves to the U-shaped frame position, the blocking plate 61 blocks the chip from moving forward. At this time, the third motor 5 is started, which drives the top plate 51 to move upward, lifting the chip off the chain belt 26. Meanwhile, the fourth motor 75 on the stabilizer 7 rotates according to the chip size via the control panel 8, driving the second lead screw 72 to rotate. Since the threads on both sides of the separator ring 73 are opposite, the two end stabilizers 74 move towards each other, stabilizing both sides of the chip and preventing the chip from shaking or shifting during ejection, thus facilitating subsequent bead cutting.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A feeding mechanism for semiconductor chip lead cutting processing, comprising a worktable (1), a feeding mechanism and a guiding mechanism, wherein the feeding mechanism is disposed on the worktable (1); and the guiding mechanism is disposed on both sides of the feeding mechanism for guiding chip feeding. Its features are, The feeding mechanism includes a mounting frame (2), a first motor (24), and a bracket (22). The mounting frame (2) is fixedly mounted on the workbench (1). Support plates (21) are fixedly mounted at both ends of the top of the mounting frame (2). The bracket (22) is mounted at both ends of the top of the support plate (21), and a rotating shaft (23) is provided between the brackets (22). The first motor (24) is mounted on the side wall of the bracket (22), and its output end is connected to the rotating shaft (23). Two sprockets (25) are mounted on the rotating shaft (23). A chain belt (26) is rotatably mounted on the sprockets (25). An ejection mechanism is provided in the gap between the chain belts (26). The ejection mechanism is used to eject the chip.

2. The feeding mechanism for semiconductor chip lead cutting as described in claim 1, characterized in that, The guiding mechanism includes a support (3), a second motor (31), and a guide block (32). The support (3) is fixedly disposed on both sides of the mounting frame (2). A first lead screw (32) is disposed between the supports (3). The second motor (31) is disposed on the side wall of the support (3), and its output end is connected to the first lead screw (32). The threads at both ends of the first lead screw (32) are opposite in direction. The guide block (32) is disposed at both ends of the first lead screw (32). A guide plate (33) is disposed on the top of the guide block (32). The guide plate (33) is used to guide both sides of the chain (26).

3. The feeding mechanism for semiconductor chip lead cutting as described in claim 2, characterized in that, Two limiting blocks (34) are provided on the first lead screw (32), and the limiting blocks (34) are used to limit the guide block (32).

4. The feeding mechanism for semiconductor chip lead cutting as described in claim 2, characterized in that, The mounting bracket (2) has a slide rail (4) placed horizontally on it. One end of the bottom of the guide block (32) is set on the first lead screw (32), and the other end is slidably engaged with the slide rail (4).

5. The feeding mechanism for semiconductor chip lead cutting as described in claim 1, characterized in that, The ejection mechanism includes a third motor (5) and a top plate (51). A U-shaped frame (6) is fixedly installed on the worktable (1). The feeding mechanism is located between the U-shaped frames (6). The third motor (5) is fixedly installed in the middle of the U-shaped frames (6), and its output end is connected to the top plate (51).

6. The feeding mechanism for semiconductor chip lead cutting as described in claim 5, characterized in that, A baffle plate (61) is provided on the U-shaped frame (6). The baffle plate (61) extends upward along the gap between the two chain belts (26). The baffle plate (61) is used to block the chip being fed.

7. The feeding mechanism for semiconductor chip lead cutting as described in claim 6, characterized in that, The baffle plate (61) is provided with a sliding groove (611), and the top plate (51) is provided with a slider, which slides in cooperation with the sliding groove (611).

8. The feeding mechanism for semiconductor chip lead cutting as described in claim 5, characterized in that, The U-shaped frame (6) has a stabilizing seat (7) on its side wall. The stabilizing seat (7) has a stabilizing groove (71) and a second lead screw (72) in the stabilizing groove (71). The stabilizing seat (7) has a fourth motor (75) on its side wall. The output end of the fourth motor (75) is connected to the second lead screw (72). The center of the second lead screw (72) has a separating ring (73) with opposite directions of the threads on both sides of the separating ring (73). The two ends of the second lead screw (72) have stabilizing plates (74) for stabilizing the two sides of the ejected chip.

9. The feeding mechanism for semiconductor chip lead cutting as described in claim 8, characterized in that, The side wall of the U-shaped frame (6) is provided with a receiving groove (62), and the size of the stabilizing plate (74) is adapted to the receiving groove (62).

10. The feeding mechanism for semiconductor chip lead cutting as described in claim 1, characterized in that, The workbench (1) is provided with a control panel (8) on its side wall.

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