Substrate fixing clamp for chip packaging test

Abstract

The utility model discloses a substrate fixing clamp for chip packaging test, which comprises a rotating structure, a placing table, a clamping structure and a fixing structure, the bottom of the rotating structure is provided with a bottom plate, the top of the rotating structure is provided with a rotating disc, four corners of the bottom of the placing table are respectively provided with a supporting column, and the bottoms of the four supporting columns are fixedly connected with the rotating disc. A groove is formed in the containing table, a through groove is formed in the center of the interior of the containing table, the number of the clamping structures is four, the four clamping structures are arranged on the four sides of the interior of the groove respectively, and the fixing structure is arranged in the through groove. According to the utility model, through the cooperation of the rotating structure and the limiting structure, the chip does not need to be detached and rotated manually, the test requirements of different substrates can be met, the applicability is increased, through the cooperation of the clamping structure and the fixing structure and the soft contact of the suction cup and the chip, the hard contact of the chip with the fixing structure during fixation is avoided, and the test efficiency is improved. Not only is the chip prevented from being damaged, but also the fixing stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging and testing, in particular to a substrate fixing fixture for chip packaging and testing. Background Art

[0002] Chip packaging is the casing for installing semiconductor integrated circuit chips, which plays the roles of placing, fixing, sealing, protecting the chips and enhancing the electrothermal performance. Moreover, it is also a bridge connecting the internal world of the chips and the external circuit - the contacts on the chips are connected to the pins of the packaging casing by wires, and these pins are further connected to other devices through the wires on the printed circuit board. Therefore, packaging plays an important role in CPUs and other LSI integrated circuits. After chip packaging, it needs to be tested, and during the testing process, a fixing fixture is required to clamp and fix the chip packaging.

[0003] A substrate fixing fixture for chip packaging and testing with the publication number CN211402627U includes a test substrate, a fixing frame fixedly connected to the upper surface of the test substrate, pins fixedly connected inside the fixing frame, a transmission fixing device fixedly connected to one side of the upper surface of the fixing frame, a fixing connection device fixedly connected to the outer surface of the fixing frame, a connection ring fixedly connected inside the fixing connection device, a screw fixedly connected inside the connection ring, a protective ring pad drivingly sleeved at the bottom of the screw, a pushing block fixedly connected inside the transmission fixing device, and a connection block fixedly connected to the bottom of the pushing block. By setting a new type of substrate fixing fixture for chip testing, through the provided pushing and fixing device, the chip can be effectively fixed during chip testing, improving the convenience of chip testing and effectively avoiding damage to the chip during testing. In addition, the existing fixing fixtures also have the following disadvantages:

[0004] (1) The existing fixing fixtures cannot rotate, and it is necessary for the staff to manually rotate the chip to adapt to the testing requirements of different substrates, thus reducing the applicability;

[0005] (2) The existing fixing fixtures are not convenient for installing and disassembling chips, and the chips may come into hard contact with the fixtures during the installation process, resulting in chip damage. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is to overcome the above technical defects and provide a substrate fixing fixture for chip packaging and testing.

[0007] To solve the above problems, the technical solution of the utility model is as follows:

[0008] A rotating structure, with a bottom plate provided at the bottom of the rotating structure and a rotating disk provided at the top of the rotating structure;

[0009] A placement table, support columns are respectively provided at the four corners of the bottom of the placement table, a groove is provided inside the placement table, and a through groove is provided at the center of the interior of the placement table;

[0010] A clamping structure, the number of the clamping structures is four groups, and the four groups of clamping structures are respectively arranged on the four inner sides of the groove;

[0011] A fixing structure, the fixing structure is arranged inside the through groove.

[0012] Furthermore, the limiting structure includes a first threaded rod, and a number of equidistant threaded grooves are provided on the outer walls of the rotating disk and the fixed seat, and the first threaded rod is used to fix the rotating disk and the fixed seat.

[0013] Furthermore, the fixing structure includes a fixing outer shell, a fixing inner shell, a suction cup, a convex platform, a piston, a second threaded rod and a connecting air pipe. The fixing inner shell is arranged inside the fixing outer shell, a suction cup is provided at the top of the fixing outer shell, a convex platform is arranged on one side inside the fixing inner shell, and a piston is arranged on the other side. A second spring is arranged between the convex platform and the piston. The second threaded rod is arranged at the bottom of the piston, and the two sides of the top of the fixing inner shell are respectively provided with connecting air pipes.

[0014] Furthermore, the rotating structure includes a transmission shaft, a worm gear, a worm, a fixed seat and a rotating disk. One end of the transmission shaft is movably connected to the center of the top of the bottom plate, and the other end is fixedly connected to the rotating disk. The worm gear is sleeved on the outer wall of the transmission shaft. A worm is arranged on one side of the worm gear. One end of the worm is movably connected to one of the fixed seats, and the other end passes through the other fixed seat and is fixedly connected to the rotating disk. A limiting structure is arranged between the rotating disk and the other fixed seat.

[0015] Furthermore, each group of the clamping structures includes a telescopic rod, a first spring and a clamping block. One end of the telescopic rod is fixedly connected to the inner wall of the groove, and the other end is fixedly connected to the clamping block. The first spring is wound around the outer wall of the telescopic rod. A bevel edge is provided on one side of the top of the clamping block away from the telescopic rod, and a rubber pad is provided on one side of the clamping block away from the telescopic rod.

[0016] Furthermore, one end of the second threaded rod is movably connected to the piston, and the other end sequentially passes through the fixing inner shell and the fixing outer shell and is fixedly connected to the rotating block. The second threaded rod is respectively threadedly connected to the fixing inner shell and the fixing outer shell. One ends of the two connecting air pipes are inserted into one side of the top of the fixing inner shell, and the other ends pass through the fixing outer shell and are inserted into the suction cup.

[0017] The advantages of the present utility model compared with the existing technology are as follows:

[0018] 1. The utility model provides a substrate fixing fixture for chip packaging testing. By screwing out the first threaded rod, the rotating disk can be rotated through the rotation of the first threaded rod. The worm is driven to rotate by the rotating disk, and the rotating disk is driven to rotate to an appropriate angle through the meshing connection between the worm and the worm gear. Then, the first threaded rod is selected into the internal thread groove, so as to complete the fixation of the rotation angle. The structure is simple and the operation is convenient. There is no need to disassemble the chip and manually rotate the chip, which can adapt to the testing requirements of different substrates and increase the applicability.

[0019] 2. The utility model provides a substrate fixing fixture for chip packaging testing. Through the cooperation of the clamping structure and the fixing structure, the second threaded rod is rotated by rotating the rotating block. Through the cooperation of the second threaded rod and the second spring, the piston is pushed to move downward, so that the suction cup sucks the chip. The fixation of the chip is completed through the self-locking of the second threaded rod and the cooperation of the second spring. Through the soft contact between the suction cup and the chip, the chip is prevented from being in hard contact with the fixing structure during fixation, which not only avoids damage to the chip, but also increases the stability of fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional view of the utility model.

[0021] Figure 2 is Figure 1 the enlarged view of part A in

[0022] Figure 3 is Figure 1 the enlarged view of part B in

[0023] Figure 4 is Figure 1 the enlarged view of part C in

[0024] Figure 5 is Figure 1 the enlarged view of the internal structure of part D in

[0025] As shown in the figure: 1. Bottom plate; 2. Rotating structure; 201. Transmission shaft; 202. Worm gear; 203. Worm; 204. Fixed seat; 205. Thread groove; 206. Rotating disk; 207. First threaded rod; 3. Rotating disk; 4. Support column; 5. Placing table; 6. Groove; 7. Through groove; 8. Clamping structure; 801. Telescopic rod; 802. First spring; 803. Clamping block; 9. Fixed structure; 901. Fixed outer shell; 902. Fixed inner shell; 903. Suction cup; 904. Boss; 905. Second spring; 906. Piston; 907. Second threaded rod; 908. Connecting air pipe; 909. Rotating block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1:

[0029] As Figures 1 to 5 shown, this embodiment provides a substrate fixing fixture for chip packaging and testing, including a rotating structure 2, a placement table 5, a clamping structure 8, and a fixing structure 9. A bottom plate 1 is provided at the bottom of the rotating structure 2, and a rotating disk 3 is provided at the top of the rotating structure 2. Support columns 4 are respectively provided at the four corners of the bottom of the placement table 5, and the bottoms of the four support columns 4 are fixedly connected to the rotating disk 3. A groove 6 is provided inside the placement table 5, and a through groove 7 is provided at the center of the inside of the placement table 5. The number of the clamping structures 8 is four groups, and the four groups of clamping structures 8 are respectively provided on the four inner sides of the groove 6, and the fixing structure 9 is provided inside the through groove 7.

[0030] Embodiment 2:

[0031] The solution in Embodiment 1 will be further introduced below in combination with the specific working mode, as described in detail below: The rotating structure 2 includes a transmission shaft 201, a worm gear 202, a worm 203, a fixed seat 204, and a rotating disk 206. One end of the transmission shaft 201 is movably connected to the center of the top of the bottom plate 1, and the other end is fixedly connected to the rotating disk 3. A worm gear 202 is sleeved on the outer wall of the transmission shaft 201. A worm 203 is provided on one side of the worm gear 202, and the worm gear 202 and the worm 203 are meshed and connected. One end of the worm 203 is movably connected to one of the fixed seats 204, and the other end passes through the other fixed seat 204 and is fixedly connected to the rotating disk 206. A limiting structure is provided between the rotating disk 206 and the other fixed seat 204. The limiting structure includes a first threaded rod 207. A number of equidistant threaded grooves 205 are provided on the outer walls of the rotating disk 206 and the fixed seat 204. The first threaded rod 207 is used to fix the rotating disk 206 and the fixed seat 204. One end of the first threaded rod 207 passes through the rotating disk 206 and is threadedly connected to the threaded groove 205, and the other end is movably connected to a rotating ring.

[0032] By screwing out the first threaded rod 207, the rotating disk 206 can be rotated by the rotation of the first threaded rod 207. The worm 203 is driven to rotate by the rotating disk 206. The rotating disk 3 is driven to rotate to an appropriate angle through the meshing connection between the worm 203 and the worm gear 202. Then, the first threaded rod 207 is selected into the internal thread groove 205, thereby completing the fixation of the rotation angle. The structure is simple and the operation is convenient. There is no need to disassemble the chip and manually rotate the chip, which can meet the test requirements of different substrates and increase the applicability.

[0033] Embodiment 3:

[0034] The solution in Embodiment 2 will be further introduced below in combination with the specific working mode, as described in detail below: Each set of clamping structures 8 includes a telescopic rod 801, a first spring 802, and a clamping block 803. One end of the telescopic rod 801 is fixedly connected to the inner wall of the groove 6, and the other end is fixedly connected to the clamping block 803. The outer wall of the telescopic rod 801 is wound with the first spring 802. The top side of the clamping block 803 away from the telescopic rod 801 is provided with an inclined edge, and the side of the clamping block 803 away from the telescopic rod 801 is provided with a rubber pad.

[0035] Embodiment 4:

[0036] The solution in Embodiment 3 will be further introduced below in combination with the specific working mode, as described in detail below: The fixing structure 9 includes a fixing outer shell 901, a fixing inner shell 902, a suction cup 903, a boss 904, a piston 906, a second threaded rod 907, and a connecting air pipe 908. The fixing inner shell 902 is arranged inside the fixing outer shell 901. The suction cup 903 is arranged on the top of the fixing outer shell 901. A boss 904 is arranged on one side inside the fixing inner shell 902, and a piston 906 is arranged on the other side. A second spring 905 is arranged between the boss 904 and the piston 906. The second threaded rod 907 is arranged at the bottom of the piston 906. Connecting air pipes 908 are respectively arranged on both sides of the top of the fixing inner shell 902. One end of the second threaded rod 907 is movably connected to the piston 906, and the other end sequentially passes through the fixing inner shell 902 and the fixing outer shell 901 and is fixedly connected to the rotating block 909. The second threaded rod 907 is threadedly connected to the fixing inner shell 902 and the fixing outer shell 901 respectively. One end of each of the two connecting air pipes 908 is inserted into one side of the top of the fixing inner shell 902, and the other end passes through the fixing outer shell 901 and is inserted into the suction cup 903.

[0037] Through the cooperation of the clamping structure 8 and the fixing structure 9, the second threaded rod 907 is driven to rotate by rotating the rotating block 909. The piston 906 is pushed to move downward through the cooperation of the second threaded rod 907 and the second spring 905, so that the suction cup 903 sucks the chip. The fixation of the chip is completed through the self-locking of the second threaded rod 907 and the cooperation of the second spring 905. The chip is in soft contact with the suction cup 903, thereby avoiding the hard contact between the chip and the fixing structure 9 during fixation, not only avoiding the damage of the chip, but also increasing the stability of the fixation.

[0038] It should be noted that, in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0040] The above description of the present invention and its implementation manners is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural modes and embodiments without creative efforts without departing from the gist of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A substrate fixing fixture for chip package testing, characterized in that, Comprising: A rotating structure (2), a bottom plate (1) is provided at the bottom of the rotating structure (2), a rotating disk (3) is provided at the top of the rotating structure (2), the rotating structure (2) includes a transmission shaft (201), a worm gear (202), a worm (203), a fixed seat (204), and a rotating disk (206). One end of the transmission shaft (201) is movably connected to the center of the top of the bottom plate (1), and the other end is fixedly connected to the rotating disk (3). The outer wall of the transmission shaft (201) is sleeved with the worm gear (202). One side of the worm gear (202) is provided with the worm (203). One end of the worm (203) is movably connected to one of the fixed seats (204), and the other end passes through the other fixed seat (204) and is fixedly connected to the rotating disk (206). A limiting structure is provided between the rotating disk (206) and the other fixed seat (204); A placing table (5), support columns (4) are respectively provided at the four corners of the bottom of the placing table (5), a groove (6) is provided inside the placing table (5), and a through groove (7) is provided at the center of the inside of the placing table (5); A clamping structure (8), the number of the clamping structures (8) is four groups. The four groups of clamping structures (8) are respectively arranged on the four inner sides of the groove (6). Each group of clamping structures (8) includes a telescopic rod (801), a first spring (802), and a clamping block (803). One end of the telescopic rod (801) is fixedly connected to the inner wall of the groove (6), and the other end is fixedly connected to the clamping block (803). The outer wall of the telescopic rod (801) is wound with the first spring (802). A hypotenuse is provided on one side of the top of the clamping block (803) away from the telescopic rod (801), and a rubber pad is provided on one side of the clamping block (803) away from the telescopic rod (801); A fixing structure (9), the fixing structure (9) is arranged inside the through groove (7). The fixing structure (9) includes a fixing outer shell (901), a fixing inner shell (902), a suction cup (903), a convex platform (904), a piston (906), a second threaded rod (907), and a connecting air pipe (908). The fixing inner shell (902) is arranged inside the fixing outer shell (901). A suction cup (903) is provided at the top of the fixing outer shell (901). A convex platform (904) is provided on one side inside the fixing inner shell (902), and a piston (906) is provided on the other side. A second spring (905) is provided between the convex platform (904) and the piston (906). A second threaded rod (907) is provided at the bottom of the piston (906). Connecting air pipes (908) are respectively provided on both sides of the top of the fixing inner shell (902).

2. The substrate fixing jig for chip package testing according to claim 1, characterized in that: The limiting structure includes a first threaded rod (207). A plurality of equidistant threaded grooves (205) are provided on the outer walls of the rotating disk (206) and the fixed seat (204). The first threaded rod (207) is used to fix the rotating disk (206) and the fixed seat (204).

3. The substrate fixing fixture for chip package testing according to claim 1, characterized in that: One end of the second threaded rod (907) is movably connected to the piston (906), and the other end sequentially passes through the fixed inner shell (902) and the fixed outer shell (901) and is fixedly connected to the rotating block (909). The second threaded rod (907) is threadedly connected to the fixed inner shell (902) and the fixed outer shell (901) respectively. One end of each of the two connecting air pipes (908) is inserted and fixed to one side of the top of the fixed inner shell (902), and the other end passes through the fixed outer shell (901) and is inserted into the suction cup (903).

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