A chip mounting and dismounting fixture

Abstract

This utility model relates to the field of chip clamping equipment technology, specifically to a chip disassembly and assembly fixture, comprising: a loading plate, with fixing blocks installed at both ends of the four sides of the loading plate, a first loading groove formed in the middle of the upper surface of the loading plate, a set of second loading grooves formed on the opposite two side walls of the loading plate, and a switch groove formed on the other side wall of the loading plate, and a clamping assembly provided inside the loading plate for clamping the chip to be disassembled or assembled. The purpose of this utility model is to provide a chip disassembly and assembly fixture to solve the problems of poor compatibility, high risk of clamping damage, and low operating efficiency in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of chip clamping equipment technology, and in particular to a chip mounting and dismounting fixture. Background Technology

[0002] With the rapid development of semiconductor technology, chip packaging forms are becoming increasingly diversified (such as BGA, QFN, WLCSP, etc.), with sizes ranging from millimeters to centimeters. During chip assembly, disassembly, testing, and rework, traditional fixtures generally employ fixed structures or single adjustment methods, making it difficult to adapt to the rapid switching requirements of multiple chip specifications. Furthermore, the miniaturization of chip manufacturing processes places higher demands on clamping precision; traditional rigid clamping methods are prone to problems such as chip pin deformation and pad damage, directly affecting product yield.

[0003] In existing technologies, fixed structures or discrete adjustment methods are commonly used, which makes it difficult to quickly adapt to chips of different sizes. The changeover operation is complex and inefficient. The clamping mechanism lacks adaptive adjustment capability, and rigid clamping can easily cause the chip to break or slip due to uneven force, especially for thin, irregularly shaped, or surface-sensitive chips, which have a higher risk of damage. The positioning accuracy depends on manual or simple mechanical structures, which is difficult to meet the process requirements of high-density packaged chips and can easily cause welding or inspection defects due to alignment deviations. Therefore, this utility model discloses a chip disassembly and assembly fixture to solve the problems of poor compatibility, high risk of clamping damage, and low operating efficiency in existing technologies. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a chip assembly and disassembly fixture to solve the problems of poor compatibility, high risk of clamping damage and low operating efficiency in the prior art.

[0005] To achieve the above objectives, this utility model provides a chip assembly / disassembly fixture, comprising: a loading plate, wherein fixing blocks are installed at both ends of the four sides of the loading plate, a first loading groove is formed in the middle of the upper surface of the loading plate, a set of second loading grooves are formed on the opposite two sides of the loading plate, and a switch groove is formed on the other side of the loading plate, and a clamping assembly is provided inside the loading plate, the clamping assembly being used to clamp the chip to be assembled / disassembled.

[0006] Preferably, the clamping assembly includes multiple sets of clamping arms, each set of clamping arms being L-shaped with an opening angle of 120 degrees, and the multiple sets of clamping arms are arranged in a uniform circumferential array directly above the loading plate. A rotating column is rotatably mounted at the corner of each set of clamping arms, and the bottom of each set of rotating columns is inserted into the upper surface of the loading plate. A circular loading cavity is formed inside the center of the loading plate, and a loading ring is installed inside the circular loading cavity. The end of each set of rotating columns is fixedly mounted on the upper surface of the loading ring, and the corresponding column on the loading plate... Each of the rotating columns has a through track groove. One end of the short side of the clamping arm is located at the outer edge of the loading plate. Each set of clamping arms has a guide post installed on the bottom wall of the short side end. The loading plate has a sliding groove corresponding to the position of each set of guide posts. The other end of the guide post is slidably inserted into the sliding groove. Each set of clamping arms has a clamping contact mechanism on the side wall near the central axis of the loading ring. The outer wall of the loading ring has an adjustment mechanism corresponding to the position of the switch groove and the second loading groove.

[0007] Preferably, the clamping contact mechanism includes multiple sets of mounting slots. Each set of mounting slots is formed on the end sidewall of the long side of the clamping arm. The upper and lower sidewalls of the mounting slots are provided with equilateral trapezoidal limiting slots. The bottom walls of the two sets of equilateral trapezoidal limiting slots are engaged and rotatably mounted with a mounting column. A connecting block is slidably mounted in the equilateral trapezoidal limiting slot. The upper and lower sidewalls of the connecting block are provided with through movable slots. The mounting column is slidably inserted into the movable slot. A set of guide rods is installed on the upper and lower sidewalls of both ends of the movable slot. The two sets of guide rods are slidably inserted into the mounting column. A buffer spring is sleeved on each set of guide rods. One end of each set of buffer springs is mounted on the arc wall of the mounting column. The other end of each set of buffer springs is mounted on the sidewall of the movable slot near the clamping block. A clamping block is fixedly mounted on the end of the connecting block near the central axis of the loading ring. A rubber corrugated pad is installed on the other sidewall of the clamping block.

[0008] Preferably, the adjusting mechanism includes two sets of limiting posts. Each of the two sets of limiting posts has its upper and lower bottom walls of the second loading slot installed at corresponding positions at both ends. A return spring is fixedly installed on the arc wall of the limiting post. A fixing post is installed at the other end of the return spring. One end of the fixing post is installed on the side wall of the loading ring. An installation sleeve is installed on the side wall of the loading ring corresponding to the position of the switch slot. A connecting post is slidably installed on the inner wall of the other end of the installation sleeve. A switch block is installed on the other end of the connecting post. The switch block slides against the side wall of the loading plate.

[0009] Preferably, the opening angle of each set of clamping arms faces the side wall of the loading plate, and each set of clamping arms has a through hole with the same diameter as the rotating column at the position corresponding to the position of each set of rotating columns.

[0010] Preferably, the outermost wall of the loading ring fits against the inner wall of the circular loading cavity, the sliding groove is rectangular, and the outer diameter of the guide post is the same as the width of the sliding groove.

[0011] Preferably, the long bottom edge of the equilateral trapezoidal limiting groove faces the central axis of the loading ring, and the upper and lower bottom walls of the equilateral trapezoidal limiting groove are provided with circular grooves of the same diameter as the mounting column at the position of the mounting column.

[0012] Preferably, the outer wall of the mounting column is provided with a through circular hole of the same diameter as the guide rod at the position of each group of guide rods.

[0013] Preferably, the two sets of limiting posts are positioned to the left of the fixing posts at their respective installation positions on the upper and lower bottom walls of the second loading groove, and the mounting sleeve is positioned to the left of the switch groove at its installation position on the side wall of the loading ring.

[0014] The beneficial effects of this utility model are:

[0015] This novel chip mounting and dismounting fixture significantly improves the compatibility and clamping reliability of chips of various sizes through structural design and adaptive adjustment mechanisms. Its core innovation lies in the synergistic effect of the circumferential array adaptive clamping components and the elastic buffer clamping contact mechanism: the clamping arms are evenly distributed in a circumferential array around the loading ring, and synchronous opening and closing are achieved through the linkage between the rotating column and the loading ring, allowing for quick adaptation to chips of different sizes without the need to replace components; the clamping contact mechanism adopts a combination design of trapezoidal limiting groove guide and buffer spring, enabling the clamping block to automatically adjust the clamping force and angle according to the chip surface morphology when contacting the chip, avoiding pin deformation or pad damage caused by rigid contact. Furthermore, the rubber corrugated pad covering the surface of the clamping block further enhances friction and buffering performance, making it particularly suitable for thin, irregularly shaped, or surface-sensitive chips, effectively reducing the risk of damage during clamping.

[0016] This invention significantly optimizes the efficiency and ease of operation of chip assembly and disassembly processes through a high-precision positioning and adjustment mechanism and modular operation design. The adjustment mechanism utilizes the elastic cooperation of the limiting post and the return spring to achieve precise positioning and rapid reset of the loading ring. Combined with the sliding trigger structure of the switch block and connecting post, operators can clamp and release the chip with just one hand, significantly simplifying the complex changeover process of traditional fixtures. Simultaneously, the first and second loading slots on the loading plate provide multi-dimensional positioning references for the chip. Combined with the circumferential array layout of the clamping arms, this ensures precise alignment between the chip center and the fixture center, meeting the process requirements of high-density packaged chips (such as BGA and WLCSP). Furthermore, the modular design allows key components such as the clamping arms and rotating posts to be independently disassembled and maintained, reducing equipment failure rates and maintenance costs, and overall improving the flexibility and economic efficiency of the production line. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional cross-sectional view of part of the structure of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of some of the clamping components of this utility model;

[0021] Figure 4 This is an enlarged structural diagram of some of the clamping components of this utility model;

[0022] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle;

[0023] Figure 6 This utility model Figure 2 Enlarged structural diagram at point B.

[0024] The diagram is marked as follows:

[0025] 1. Loading plate; 2. First loading slot; 3. Fixing block; 4. Switch slot; 5. Switch block; 6. Mounting sleeve; 7. Connecting post; 8. Sliding slot; 9. Clamping arm; 10. Rotating post; 11. Second loading slot; 12. Loading ring; 13. Guide post; 14. Mounting slot; 15. Equilateral trapezoidal limiting slot; 16. Mounting post; 17. Connecting block; 18. Clamping block; 19. Rubber corrugated pad; 20. Guide rod; 21. Buffer spring; 22. Fixing post; 23. Limiting post; 24. Return spring. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0027] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] This utility model provides, for example Figures 1 to 6The chip mounting and dismounting fixture shown includes: a loading plate 1, with fixing blocks 3 installed at both ends of the four sides of the loading plate 1, a first loading groove 2 opened in the middle of the upper end face of the loading plate 1, a set of second loading grooves 11 opened on the opposite two side walls of the loading plate 1, and a switch groove 4 opened on the other side wall of the loading plate 1. The loading plate 1 is provided with a clamping assembly for clamping the chip to be mounted or dismounted. The chip mounting and dismounting fixture of this utility model significantly improves the compatibility and clamping reliability of multi-specification chips through structural design and adaptive adjustment mechanism. Its core innovation lies in the synergistic effect of the circumferential array adaptive clamping component and the elastic buffer clamping contact mechanism: the clamping arms 9 are evenly distributed in a circumferential array around the loading ring 12, and synchronous opening and closing are achieved through the linkage between the rotating column 10 and the loading ring 12, which can quickly adapt to chips of different sizes without replacing components; the clamping contact mechanism adopts a combination design of trapezoidal limiting groove guide and buffer spring 21, so that the clamping block 18 can automatically adjust the clamping force and angle according to the chip surface morphology when contacting the chip, avoiding pin deformation or pad damage caused by rigid contact. In addition, the rubber corrugated pad 19 covering the surface of the clamping block 18 further enhances the friction and buffering performance, especially suitable for thin, irregularly shaped or surface-sensitive chips, effectively reducing the risk of damage during clamping. This utility model significantly optimizes the efficiency and ease of operation of chip assembly and disassembly processes through a high-precision positioning adjustment mechanism and modular operation design. The adjustment mechanism utilizes the elastic cooperation between the limiting post 23 and the reset spring 24 to achieve precise positioning and rapid reset of the loading ring 12. Combined with the sliding trigger structure of the switch block 5 and the connecting post 7, the operator can complete the clamping and release of the chip with only one hand, significantly simplifying the complex changeover process of traditional fixtures. At the same time, the first loading slot 2 and the second loading slot 11 on the loading plate 1 provide a multi-dimensional positioning reference for the chip. With the circumferential array layout of the clamping arm 9, it ensures precise alignment between the chip center and the fixture center, meeting the process requirements of high-density packaged chips (such as BGA and WLCSP). In addition, the modular design allows key components such as the clamping arm 9 and the rotating post 10 to be disassembled and maintained independently, reducing equipment failure rate and maintenance costs, and improving the overall flexibility and economic efficiency of the production line.

[0029] Furthermore, in this example, such as Figure 1 , Figure 2 and Figure 5As shown, the clamping assembly includes multiple sets of clamping arms 9, each set of clamping arms 9 being L-shaped with an opening angle of 120 degrees. These multiple sets of clamping arms 9 are arranged in a uniform circumferential array directly above the loading plate 1. A rotating column 10 is rotatably mounted at the corner of each set of clamping arms 9. The bottom of each rotating column 10 is inserted into the upper surface of the loading plate 1. A circular loading cavity is formed inside the center of the loading plate 1, and a loading ring 12 is installed inside the circular loading cavity. The end of each rotating column 10 is fixedly mounted on the upper surface of the loading ring 12. A through-track groove is formed on the loading plate 1 corresponding to the position of each rotating column 10. One short side of the clamping arm 9 is located on the outer side of the loading plate 1. Each clamping arm 9 has a guide post 13 installed on the bottom wall of its short side end. A sliding groove 8 is provided on the loading plate 1 corresponding to the position of each guide post 13. The other end of the guide post 13 is slidably inserted into the sliding groove 8. A clamping contact mechanism is provided on the side wall of the long side end of each clamping arm 9 near the central axis of the loading ring 12. An adjustment mechanism is provided on the outer side wall of the loading ring 12 corresponding to the position of the switch slot 4 and the second loading slot 11. When the switch block 5 is turned, the connecting post 7 slides within the mounting sleeve 6, pushing the loading ring 12 to rotate along the circular loading cavity. The loading ring 12 drives the fixed post 22 to rotate synchronously, causing the reset spring 24 to undergo elastic deformation. Since the rotating post 10 is fixedly installed on the upper surface of the loading ring 12, the rotation of the loading ring 12 drives the clamping arm 9 to rotate around the corner via the rotating post 10. The guide post 13 of the clamping arm 9 slides within the sliding groove 8, pushing the short side of the clamping arm 9 to move outward, causing the long side end of the clamping arm 9 to gradually open, thus realizing the chip release operation. After the switch block 5 is released, the reset spring 24 returns to its original shape and pulls the loading ring 12 to rotate in the opposite direction through the fixed column 22, which drives the rotating column 10 and the clamping arm 9 to reset synchronously. The long side end of the clamping arm 9 moves towards the central axis of the loading ring 12 and finally clamps the chip located in the first loading slot 2 through the clamping contact mechanism.

[0030] Furthermore, in this example, such as Figure 5 and Figure 6As shown, the clamping contact mechanism includes multiple sets of mounting slots 14. Each set of mounting slots 14 is opened on the end side wall of the long side of the clamping arm 9, and the upper and lower side walls of the mounting slots 14 are provided with equilateral trapezoidal limiting slots 15. The bottom walls of the two sets of equilateral trapezoidal limiting slots 15 are engaged and rotatably mounted with mounting posts 16. Connecting blocks 17 are slidably installed in the equilateral trapezoidal limiting slots 15, and the upper and lower side walls of the connecting blocks 17 are provided with through movable slots. The mounting posts 16 are slidably inserted into the movable slots. The upper and lower side walls of the movable slots are both equipped with a set of guide rods 20. The two sets of guide rods 20 are slidably inserted into the mounting posts 16, and each set of guide rods 20 is fitted with a buffer spring 21. One end of each buffer spring 21 is installed on the arc wall of the mounting post 16, and the other end of each buffer spring 21 is installed on the side wall of the movable slot near the clamping block 18. The connecting block 17 is near the... A clamping block 18 is fixedly installed at one end of the central axis of the loading ring 12, and a rubber corrugated pad 19 is installed on the side wall of the other end of the clamping block 18. The adjustment mechanism includes two sets of limiting posts 23. The upper and lower bottom walls of the second loading groove 11 at corresponding positions are respectively installed at both ends of the two sets of limiting posts 23. A reset spring 24 is fixedly installed on the arc wall of the limiting post 23. A fixing post 22 is installed at the other end of the reset spring 24. One end of the fixing post 22 is installed on the side wall of the loading ring 12. An installation sleeve 6 is installed on the side wall of the loading ring 12 at the position corresponding to the switch groove 4. A connecting post 7 is slidably installed on the inner wall of the other end of the installation sleeve 6. A switch block 5 is installed on the other end of the connecting post 7. The switch block 5 slides against the side wall of the loading plate 1. In the clamping contact mechanism, when the long side end of the clamping arm 9 moves toward the central axis of the loading ring 12, the clamping block 18 first contacts the chip surface. Because the mounting post 16 engages within the equilateral trapezoidal limiting groove 15, and the connecting block 17 is fitted onto the mounting post 16 via the movable groove, the connecting block 17 can slide along the mounting post 16 and achieve elastic buffering through the guide rod 20 and the buffer spring 21. When uneven force is applied to the clamping block 18 due to differences in chip surface morphology, the connecting block 17 slides within the movable groove, compressing or stretching the buffer spring 21, automatically adjusting the clamping force and angle of the clamping block 18 to avoid rigid contact damage to the chip. The rubber corrugated pad 19 covers the surface of the clamping block 18, further enhancing friction and buffering performance, especially suitable for thin, irregularly shaped, or surface-sensitive chips. In the adjustment mechanism, the limiting post 23 is fixedly installed on the upper and lower bottom walls of the second loading groove 11, and one end of the return spring 24 is fixed to the arc wall of the limiting post 23, while the other end is connected to the fixed post 22. When the loading ring 12 rotates, the fixed post 22 compresses or stretches the return spring 24, achieving precise positioning and rapid reset of the loading ring 12. The switch block 5 controls the rotation state of the loading ring 12 through the sliding engagement of the connecting post 7 and the mounting sleeve 6. The operator only needs to move the switch block 5 with one hand to complete the clamping and release of the chip, which greatly simplifies the operation process.

[0031] Furthermore, in this example, such as Figure 2 Figure 3 and Figure 4 As shown, the opening angle of each set of clamping arms 9 faces the side wall of the loading plate 1, and each set of clamping arms 9 has a through circular hole with the same diameter as the rotating column 10 at the position corresponding to the position of each set of rotating columns 10. The outermost wall of the loading ring 12 fits against the inner wall of the circular loading cavity. The sliding groove 8 is rectangular, and the outer diameter of the guide column 13 is the same as the width of the sliding groove 8. The long base of the equilateral trapezoidal limiting groove 15 faces the central axis of the loading ring 12, and the upper and lower bottom walls of the equilateral trapezoidal limiting groove 15 have openings corresponding to the positions of the mounting column 16. The mounting post 16 has a circular groove with the same diameter as the guide rod 20. The outer wall of the mounting post 16 has a through-hole with the same diameter as the guide rod 20 at each position. The two sets of limiting posts 23 are positioned to the left of the fixed post 22 on the upper and lower bottom walls of the second loading groove 11. The mounting sleeve 6 is positioned to the left of the switch groove 4 on the side wall of the loading ring 12. Each clamping arm 9 faces the side wall of the loading plate 1. The rotating post 10 passes through the through-hole at the corner of the clamping arm 9, achieving linkage between the clamping arm 9 and the loading ring 12. The outermost wall of the loading ring 12 fits against the inner wall of the circular loading cavity to ensure rotational stability. The sliding groove 8 is rectangular, and the outer diameter of the guide post 13 is the same as the width of the sliding groove 8, achieving linear guidance for the opening and closing of the clamping arm 9. The long base of the equilateral trapezoidal limiting groove 15 faces the central axis of the loading ring 12. The mounting post 16 engages with the equilateral trapezoidal limiting groove 15 through the circular groove, achieving elastic sliding of the connecting block 17. The guide rod 20 passes through the mounting column 16. One end of the buffer spring 21 is installed on the arc wall of the mounting column 16, and the other end is installed on the side wall of the movable slot near the clamping block 18, ensuring the elastic buffering performance of the clamping block 18. The limiting column 23 is installed to the left of the fixed column 22 on the upper and lower bottom walls of the second loading slot 11, and the mounting sleeve 6 is installed to the left of the switch slot 4 on the side wall of the loading ring 12, optimizing the mechanical transmission path of the adjustment mechanism and improving the overall stability and reliability of the equipment.

[0032] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0033] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A chip mounting and dismounting fixture, characterized in that, include: The loading plate (1) has fixing blocks (3) installed at both ends of its four sides. A first loading groove (2) is provided in the middle of the upper surface of the loading plate (1). A set of second loading grooves (11) is provided on both opposite sides of the loading plate (1). A switch groove (4) is provided on the other side of the loading plate (1). A clamping assembly is provided inside the loading plate (1). The clamping assembly is used to clamp the chip to be disassembled.

2. The chip mounting and dismounting fixture according to claim 1, characterized in that, The clamping assembly includes multiple sets of clamping arms (9), each set of clamping arms (9) being L-shaped with an opening angle of 120 degrees. The multiple sets of clamping arms (9) are arranged in a uniform circumferential array directly above the loading plate (1). A rotating column (10) is rotatably mounted at the corner of each set of clamping arms (9). The bottom of each set of rotating columns (10) is inserted into the upper surface of the loading plate (1). A circular loading cavity is formed inside the center of the loading plate (1), and a loading ring (12) is installed inside the circular loading cavity. The end of each set of rotating columns (10) is fixedly mounted on the upper surface of the loading ring (12). The loading plate (1) has a corresponding rotating column (10) on each set of rotating columns (10). A through track groove is provided at position 10). One end of the short side of the clamping arm (9) is located at the outer edge of the loading plate (1). A guide post (13) is installed on the bottom wall of the short side end of each set of clamping arms (9). A sliding groove (8) is provided on the loading plate (1) corresponding to the position of each set of guide posts (13). The other end of the guide post (13) is slidably inserted into the sliding groove (8). A clamping contact mechanism is provided on the side wall of the long side end of each set of clamping arms (9) near the central axis of the loading ring (12). An adjustment mechanism is provided on the outer side wall of the loading ring (12) corresponding to the position of the switch groove (4) and the second loading groove (11).

3. A chip mounting and dismounting fixture according to claim 2, characterized in that, The clamping contact mechanism includes multiple sets of mounting slots (14). Each set of mounting slots (14) is opened on the end side wall of the long side of the clamping arm (9). The upper and lower side walls of the mounting slots (14) are provided with equilateral trapezoidal limiting slots (15). The bottom walls of the two sets of equilateral trapezoidal limiting slots (15) are engaged and rotatably mounted with mounting posts (16). A connecting block (17) is slidably installed in the equilateral trapezoidal limiting slot (15). The upper and lower side walls of the connecting block (17) are provided with through movable slots. The mounting post (16) is slidably inserted into the movable slot. The upper and lower side walls of the movable slot are connected by a common groove. A set of guide rods (20) is installed on the same side. The two sets of guide rods (20) are slidably inserted on the mounting column (16). A buffer spring (21) is sleeved on both sets of guide rods (20). A clamping block (18) is fixedly installed on one end of the connecting block (17) near the central axis of the loading ring (12). A rubber corrugated pad (19) is installed on the side wall of the other end of the clamping block (18). One end of each set of buffer springs (21) is installed on the arc wall of the mounting column (16), and the other end of each set of buffer springs (21) is installed on the side wall of the movable groove near the clamping block (18).

4. A chip mounting and dismounting fixture according to claim 3, characterized in that, The adjustment mechanism includes two sets of limiting posts (23). The upper and lower bottom walls of the second loading groove (11) are respectively installed at the two ends of the two sets of limiting posts (23). A reset spring (24) is fixedly installed on the arc wall of the limiting post (23). A fixing post (22) is installed at the other end of the reset spring (24). One end of the fixing post (22) is installed on the side wall of the loading ring (12). An installation sleeve (6) is installed on the side wall of the loading ring (12) corresponding to the position of the switch groove (4). A connecting post (7) is slidably installed on the inner wall of the other end of the installation sleeve (6). A switch block (5) is installed on the other end of the connecting post (7). The switch block (5) slides against the side wall of the loading plate (1) on one side.

5. A chip mounting and dismounting fixture according to claim 4, characterized in that, The opening angle of each set of clamping arms (9) faces the side wall of the loading plate (1), and each set of clamping arms (9) has a through hole with the same diameter as the rotating column (10) at the position corresponding to each set of rotating columns (10).

6. A chip mounting and dismounting fixture according to claim 5, characterized in that, The outermost wall of the loading ring (12) fits against the inner wall of the circular loading cavity. The sliding groove (8) is rectangular, and the outer diameter of the guide post (13) is the same as the width of the sliding groove (8).

7. A chip mounting and dismounting fixture according to claim 6, characterized in that, The long bottom edge of the equilateral trapezoidal limiting groove (15) faces the central axis of the loading ring (12), and the upper and lower bottom walls of the equilateral trapezoidal limiting groove (15) are provided with circular grooves of the same diameter as the mounting column (16) at the positions corresponding to the mounting column (16).

8. A chip mounting and dismounting fixture according to claim 7, characterized in that, The outer wall of the mounting column (16) is provided with a through hole of the same diameter as the guide rod (20) at the position of each group of guide rods (20).

9. A chip mounting and dismounting fixture according to claim 8, characterized in that, The two sets of limiting posts (23) are installed on the left side of the fixing post (22) at the corresponding upper and lower bottom walls of the second loading groove (11), and the mounting sleeve (6) is installed on the left side of the side wall of the loading ring (12) within the switch groove (4).

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