A fixture for testing packaged chips

Abstract

The present invention relates to the technical field of packaged chips, and discloses a fixture for testing packaged chips, including a fixture seat head, a fixed frame is fixedly installed in the middle of the inner cavity of the fixture seat head, a lower suction piece is fixedly installed at the top edge of the fixed frame, and a receiving cavity is opened at the bottom of the inner wall of the fixed frame. The present invention achieves the clamping and fixing of the non-pin side of the chip by setting a movable clamping block, so that the chip cannot easily shake or shift. At the same time, adaptive fixation is achieved. By setting an auxiliary pressure column, the clamping effect of the movable clamping block on the chip is stronger and the anti-shift effect is better, which effectively avoids the problem of chip misalignment and shifting during the test process, thereby affecting the test results. By setting a lower suction piece and an upper suction piece, the downward pressure given by the sealing cover plate on the top of the chip is uniform when manually closed, avoiding the problem of chip surface damage due to uneven force during the existing manual closing.

Description

Technical Field

[0001] The invention relates to the technical field of packaged chips, in particular to a fixture for testing packaged chips. Background Art

[0002] The packaged chip is a shell used to install semiconductor integrated circuit chips. The package plays the role of placing, fixing, sealing, protecting the chip and enhancing the electrical and thermal performance. It also plays the role of communicating the internal world of the chip with the external circuit. The contacts on the chip are connected to the pins of the package shell through wires, and the pins are then connected to other devices through wires on the printed circuit board to complete the package. When testing the existing packaged chips, it is necessary to use a fixture to fix the packaged chips to facilitate the completion of the test work. The existing test fixture is generally composed of a fixed panel, a drilling plate, a probe, a limit frame, and an alloy seat. The chip is manually clamped and placed in the groove on the limit frame. The pins of the chip are inserted into the test slot. After the chip is placed, the alloy seat is pulled down and closed and locked by the lock buckle to complete the clamping of the fixture.

[0003] However, when the existing test fixture is in use, the limit frame only clamps and fixes the two sides of the chip, that is, the two sides with pins and the test slot are clamped to each other, while the two sides without pins are not clamped. Therefore, when the chip is clamped, if the fixture table produces unstable shaking, the chip inside the limit frame is prone to offset, and when the alloy seat head is manually pulled to close, if the manual closing produces an error, the downward pressure of the alloy seat head will also cause the chip to offset, thereby causing the chip pins and the test slot to fail to be clamped and fixed normally, resulting in the problem of pin damage. In addition, the alloy seat head of the existing test fixture is generally provided with an internal protrusion, so that when closed, the chip surface can be pressed up to achieve stability. However, because the existing fixture is closed by a lock buckle, when the alloy seat head is manually pulled down and pressed hard, if the manual force is too large to achieve the locking action of the lock buckle, it is very easy to cause the downward pressure of the internal protrusion of the alloy seat head to be too strong, thereby causing damage to the chip surface. Moreover, when manually closed, the pressing force on the fixture is uneven, which will also cause the structure of the chip in the fixture to be damaged, thereby affecting the effect of chip testing. Summary of the invention

[0004] In view of the shortcomings of the existing packaged chip testing fixture mentioned in the background technology during use, the present invention provides a packaged chip testing fixture, which has the advantages of autonomously fixing and clamping the non-pin side of the chip and ensuring uniform sealing pressure when closing, thereby avoiding damage to the chip, thereby solving the technical problems raised in the above-mentioned background technology.

[0005] The present invention provides the following technical solution: a fixture for testing packaged chips, comprising a fixture seat head, a fixing frame fixedly installed in the middle of the inner cavity of the fixture seat head, a lower suction piece fixedly installed on the top edge of the fixing frame, an accommodating cavity is opened at the bottom of the inner wall of the fixing frame, a spring is fixedly installed on one side of the inner cavity of the accommodating cavity, a movable clamping block is fixedly installed on one end of the spring, four auxiliary pressure columns are movably installed at the four corners of the inner wall of the fixing frame, a covering plate is movably installed above the top of the fixing frame, an insert plate is fixedly installed on the bottom edge of the covering plate, an upper suction piece is fixedly installed on the bottom end of the insert plate, four pressure column blocks are fixedly installed at the four corners of the bottom end of the covering plate, a pressing air bag is fixedly installed in the middle of the bottom end of the covering plate, and a heat conducting rod is fixedly installed in the inner walls on both sides of the front and rear of the fixing frame.

[0006] Preferably, the top outer edge of the fixing frame is concave downwards, and the depth of the concave is matched with the height of the plug board, and the width of the concave is matched with the width of the lower suction sheet.

[0007] Preferably, the lower suction piece and the upper suction piece are both in the shape of a square ring, the sizes of the lower suction piece and the upper suction piece are consistent, the lower suction piece and the upper suction piece are both magnetic, and the magnetism of the lower suction piece and the upper suction piece attracts each other.

[0008] Preferably, the hole of the accommodating cavity is rectangular, and the size of the hole is adapted to the shape and size of the movable pressing block. Tubes are respectively provided at both ends of the accommodating cavity and are connected to one side surface of the bottom of the auxiliary pressure column.

[0009] Preferably, the movable pressing block is in the shape of a right-angled trapezoid on the top and a rectangle on the bottom, which is a geometric body combining the upper and lower parts. The thickness of the rectangular geometric body at the bottom of the movable pressing block is compatible with the thickness of existing standard chips.

[0010] Preferably, the auxiliary pressure column and the pressure column block are both cylindrical in shape and have matching sizes. The interior of the auxiliary pressure column is hollow, and the surface of the auxiliary pressure column is elastic and filled with gas. The pressure column block is a solid cylinder.

[0011] Preferably, the tablet pressing airbag is rectangular in shape and has an elastic surface; the interior of the tablet pressing airbag is hollow and filled with gas.

[0012] The present invention has the following beneficial effects:

[0013] 1. The present invention provides a movable clamping block, and uses the chip to push the movable clamping block so that the movable clamping block is pushed into the inner cavity of the accommodating cavity, and the spring contracts inward. When the chip is completely moved down and fits the bottom surface of the fixed frame, the movable clamping block is moved outward by the rebound force of the spring, and then presses the two side surfaces of the non-pin side of the chip inward, thereby achieving the clamping and fixing of the non-pin side of the chip, so that the chip cannot be easily shaken or offset, and avoids the problem that when the fixture table shakes or is unstable, the chip is offset due to the shaking, resulting in the deviation and damage of the chip pins. In addition, because the spring and the movable clamping block are elastically arranged, when chips of different widths need to be tested and installed, the movable clamping block can autonomously adjust its own position according to the edge position of the chip, so that one side surface of the movable clamping block is always in close contact with the edge surface of the chip, thereby achieving adaptive fixation, effectively avoiding the problem that the existing fixed frame has a fixed inner cavity size and cannot adapt to a variety of chips, which leads to the narrow versatility of the fixture and reduces the chip testing efficiency.

[0014] 2. The present invention sets an auxiliary pressure column and uses a pressure column block to press the auxiliary pressure column downward, so that the gas inside the auxiliary pressure column surges downward, thereby generating gas punching pressure on the four corners of the chip, and then implementing compression and fixation, thereby avoiding the chip from tilting and deviating due to the shaking of the fixing frame when it is manually closed, and effectively enhancing the fixing effect of the chip. At the same time, the gas squeezed out of the auxiliary pressure column eventually flows into the inner cavity of the accommodating cavity, so that the inner cavity of the accommodating cavity is filled. Through the action of air pressure, the pressure of the movable pressure block to squeeze the chip inward increases, thereby making the clamping effect of the movable pressure block on the chip stronger, so that the chip has a better fixing effect and a better anti-drifting effect after the fixture is closed, and effectively avoiding the problem that the chip is subjected to severe impact or other strong shaking during the test, which causes dislocation and deviation, thereby affecting the test results.

[0015] 3. The present invention arranges a lower suction sheet and an upper suction sheet, and utilizes the uniform magnetic force between the lower suction sheet and the upper suction sheet, so that when the cover plate is downwardly closed with the fixed frame, the pressure on the four sides of the tablet pressing airbag is uniform. Since the magnetic suction force is uniform, the extrusion pressure given to the tablet pressing airbag by the suction of the lower suction sheet and the upper suction sheet is uniform, so that the deformation amount of the edge of the tablet pressing airbag changes uniformly, and the change amount of the inward bulging deformation of the tablet pressing airbag is also uniform, and then the downward pressure given to the chip when the tablet pressing airbag bulges also changes uniformly, so that when the chip is manually closed, the downward pressure given by the cover plate to the top of the chip is uniform, avoiding the problem of damage to the chip surface due to uneven force during the existing manual closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the structure of the present invention;

[0017] Figure 2It is a schematic front view of the structure section of the present invention;

[0018] Figure 3 It is a three-dimensional schematic diagram of the cross-section of the structure of the present invention;

[0019] Figure 4 This is a bottom-up stereoscopic schematic diagram of the cover plate of the present invention;

[0020] Figure 5 For the present invention Figure 2 Schematic diagram of the structure viewed from above at AA in the middle;

[0021] Figure 6 It is a schematic diagram of the state when the upper suction piece and the lower suction piece of the structure of the present invention are attracted and overlapped.

[0022] In the figure: 1. clamp seat; 2. fixed frame; 3. lower suction plate; 4. accommodating chamber; 5. spring; 6. movable clamping block; 7. auxiliary pressure column; 8. cover plate; 9. plug-in plate; 10. upper suction plate; 11. pressure column block; 12. pressure plate airbag; 13. heat conducting rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 6A fixture for testing packaged chips comprises a fixture seat 1, a fixing frame 2 is fixedly installed in the middle of the inner cavity of the fixture seat 1, a lower suction piece 3 is fixedly installed on the top edge of the fixing frame 2, a receiving cavity 4 is opened at the bottom of the inner wall of the fixing frame 2, a spring 5 is fixedly installed on one side of the inner cavity of the receiving cavity 4, a movable pressing block 6 is fixedly installed on one end of the spring 5, four auxiliary pressure columns 7 are movably installed at the four corners of the inner wall of the fixing frame 2, and a lower suction piece 3 is fixedly installed on the top edge of the fixing frame 2. There is a cover plate 8, a plug plate 9 is fixedly installed on the bottom edge of the cover plate 8, an upper suction plate 10 is fixedly installed on the bottom of the plug plate 9, four pressure column blocks 11 are fixedly installed at the four corners of the bottom end of the cover plate 8, a pressure air bag 12 is fixedly installed in the middle of the bottom end of the cover plate 8, and a heat conducting rod 13 is fixedly installed in the inner walls of the front and rear sides of the fixed frame 2. The overall shape of the heat conducting rod 13 is an inverted T shape, the upper part of the heat conducting rod 13 is a rectangular parallelepiped, the lower part is a cylinder, and the cylinder has a total of There are four of them, which are evenly arranged. The heat-conducting rods 13 are thermally conductive. By setting the heat-conducting rods 13, when the packaged chip is being tested, if the pin test end of the packaged chip generates heat due to power-on, the heat generated by the heat is transferred to the tablet airbag 12 through the heat-conducting rods 13, and the gas inside the tablet airbag 12 expands due to the heat, thereby increasing the degree of deformation of the middle part of the tablet airbag 12, so that the tablet airbag 12 and the surface of the chip are more completely attached, thereby increasing the stability of the chip. When the chip pin test end is overheated, the heat conducted to the tablet airbag 12 is also too high, thereby causing the gas inside the tablet airbag 12 to expand too much, and the surface of the tablet airbag 12 reaches the deformation limit, thereby rupturing instantly. When the tablet airbag 12 ruptures, it will produce a strong sound, thereby effectively reminding the tester that the pin test end of the chip has been overheated and has a safety hazard, thereby effectively protecting the tester and the safety of the packaged chip testing process.

[0025] See also Figure 2-Figure 3 , wherein the top outer edge of the fixing frame 2 is concave downward, and the depth of the concave is adapted to the height of the plug board 9 , and the width of the concave is adapted to the width of the lower suction sheet 3 .

[0026] See also Figure 4-Figure 5, wherein the lower suction piece 3 and the upper suction piece 10 are both in the shape of a square ring, the sizes of the lower suction piece 3 and the upper suction piece 10 are consistent, the lower suction piece 3 and the upper suction piece 10 are both magnetic, and the magnetic attraction between the lower suction piece 3 and the upper suction piece 10 is arranged, and the uniform magnetic force between the lower suction piece 3 and the upper suction piece 10 is utilized, so that when the cover plate 8 is downwardly closed with the fixed frame 2, the pressure on the surrounding of the tablet pressing airbag 12 is uniform, and because the magnetic attraction force is uniform, the tablet pressing airbag The extrusion pressure given by the lower suction sheet 3 and the upper suction sheet 10 when they are attracted to each other is uniform, so that the deformation amount of the edge of the tablet pressing airbag 12 changes uniformly, and the change amount of the inward bulging deformation of the tablet pressing airbag 12 is also uniform, and then the downward pressure given to the chip when the tablet pressing airbag 12 bulges also changes uniformly, so that when manually closed, the top of the chip is subjected to a uniform downward pressure given by the sealing cover plate 8, avoiding the problem of damage to the chip surface due to uneven force during the existing manual closing.

[0027] See also Figure 2-Figure 3 The hole of the accommodating chamber 4 is rectangular, and the size of the hole is adapted to the shape and size of the movable pressing block 6. Both ends of the accommodating chamber 4 are respectively provided with a tube body connected to the bottom side surface of the auxiliary pressure column 7.

[0028] See also Figure 2-Figure 3 The shape of the movable clamping block 6 is a geometric body that is a right-angled trapezoid on the top and a rectangle on the bottom. The thickness of the rectangular geometric body at the bottom of the movable clamping block 6 is adapted to the thickness of the existing standard chip. By setting the movable clamping block 6, when the chip is placed in the inner cavity of the fixed frame 2, the pushing of the edges on both sides of the chip is used to push the movable clamping block 6 into the inner cavity of the accommodating cavity 4. At this time, the spring 5 is compressed inwardly. When the chip is completely attached to the bottom surface of the fixed frame 2, one side surface of the movable clamping block 6 is evenly arranged and tightly attached along the edge surface of the non-pin side of the chip. Through the rebound force of the spring 5, the movable clamping block 6 is pressed inwardly against the two side surfaces of the non-pin side of the chip, thereby achieving the non-pin of the chip. The clamping and fixing on the side prevents the chip from shaking or shifting easily, and avoids the chip shifting due to shaking when the fixture table shakes or is unstable, which may lead to the chip pin deviation and damage. In addition, because the spring 5 and the movable clamping block 6 are elastically set, when chips of different widths need to be tested, the elastic displacement of the movable clamping block 6 can be changed so that when the chip is installed, the movable clamping block 6 will adjust its position autonomously according to the edge position distance of the chip, so that one side surface of the movable clamping block 6 is always in close contact with the edge surface of the chip, thereby achieving adaptive fixation, effectively avoiding the problem that the existing fixed frame 2 has a fixed inner cavity size and cannot adapt to a variety of chips, which leads to the problem that the fixture is not universal and reduces the chip testing efficiency.

[0029] See also Figure 2-Figure 5 The auxiliary pressure column 7 and the pressure column block 11 are both cylindrical in shape, and the sizes of the two are adapted. The interior of the auxiliary pressure column 7 is hollow, and the surface of the auxiliary pressure column 7 is elastic and filled with gas. The pressure column block 11 is a solid column. By setting the auxiliary pressure column 7, when the clamp is closed, the pressure column block 11 is used to press down the auxiliary pressure column 7, so that the gas inside the auxiliary pressure column 7 flows downward. When the gas flows downward, the gas exerts downward pressure on the four corners of the chip, and the four corners of the chip are pressed and fixed, so as to avoid the chip from tilting and deviating if the fixing frame 2 shakes when it is closed manually, and effectively strengthen the fixing effect of the chip, so that the chip as a whole can obtain the clamping or pressing effect regardless of the edge or the four corners, so that no deviation can be generated, and the chip is fully guaranteed in the clamp. The stability of the part, at the same time, the gas surging downward from the auxiliary pressure column 7 eventually flows into the inner cavity of the accommodating chamber 4. Because the movable clamping block 6 and the fixed frame 2 always remain in a sealed state, that is, the inner cavity of the accommodating chamber 4 is in a closed state, the gas flowing into the inner cavity of the accommodating chamber 4 can no longer continue to leak out, so that the gas accumulates in the inner cavity of the accommodating chamber 4 and then fills the inner cavity of the accommodating chamber 4. Due to the action of air pressure, the movable clamping block 6 has a force of air pressure in addition to the rebound pressure of the spring 5. The pressure of the movable clamping block 6 to squeeze the chip inward increases, so that the clamping effect of the movable clamping block 6 on the chip is stronger. After the fixture is closed, the chip has a better fixing effect and a better anti-deviation effect, which effectively avoids the problem of dislocation and deviation caused by severe impact or other strong shaking of the chip during the test, thereby affecting the test results.

[0030] See also Figure 2-Figure 3 The tablet pressing airbag 12 is rectangular in shape and has an elastic surface. The interior of the tablet pressing airbag 12 is hollow and filled with gas. By setting the tablet pressing airbag 12, the tablet pressing airbag 12 is elastically pressed by gas. When the chip is pressed down, compared with the existing rigid raised pressure head, the tablet pressing airbag 12 has an elastic buffering effect, which can further protect the chip structure and prevent the micro components on the chip surface from being damaged by excessive rigid squeezing.

[0031] The working principle of the method of the present invention is as follows:

[0032] When the chip needs to be tested, the fixture seat head 1 is opened, and the chip is manually held and placed in the middle of the inner cavity of the fixed frame 2, so that the two sides of the chip with pins are aligned with the test slots opened on the inner walls of the front and rear sides of the fixed frame 2 and inserted. After confirming that the insertion is correct, the chip is pushed downward. When the chip moves downward, the two side edges of the chip without pins squeeze the top of the movable clamping block 6. Since the top of the movable clamping block 6 is trapezoidal, the edge of the chip generates a lateral thrust on the movable clamping block 6, so that the movable clamping block 6 moves outward, thereby causing the spring to 5 is compressed inwardly, and the movable pressing block 6 is gradually pushed into the inner cavity of the accommodating cavity 4. When the chip moves down to the bottom surface of the fixing frame 2 and is tightly attached to the bottom surface of the fixing frame 2, one side surface of the movable pressing block 6 abuts against the edge surface of the chip. Through the rebound force of the spring 5, the movable pressing block 6 generates pressure on the two side surfaces of the non-pin side of the chip. Since the movable pressing blocks 6 are evenly arranged and tightly attached along the edge surface of the non-pin side of the chip, the two sides of the chip without pins are pressed and clamped by the movable pressing blocks 6, thereby achieving the fixing effect of the chip.

[0033] After the chip is installed in the inner cavity of the fixed frame 2, the auxiliary pressure columns 7 are manually inserted into the four corners of the inner wall of the fixed frame 2, so that the bottom ends of the auxiliary pressure columns 7 are close to the top surfaces of the four corners of the chip. After the auxiliary pressure columns 7 are installed, the upper suction piece 10 at the bottom of the sealing plate 8 is aligned with the lower suction piece 3 at the top of the fixed frame 2 by manually holding the sealing plate 8. After confirming that the positions of the lower suction piece 3 and the upper suction piece 10 are right, the sealing plate 8 is manually delivered downward. When the sealing plate 8 is close to the fixed frame 2 and a magnetic attraction is generated between the lower suction piece 3 and the upper suction piece 10, the sealing plate 8 is loosened, and the lower suction piece 3 and the upper suction piece 10 are attracted and docked by the magnetic attraction. At the same time, due to the magnetic attraction movement, the top of the fixed frame 2 squeezes the inner cavity of the edge of the tablet pressing airbag 12, causing the edge of the tablet pressing airbag 12 to be squeezed and become smaller, and the internal gas is continuously gathered in the middle, so that the pressure The middle part of the chip airbag 12 gradually deforms and bulges. At the same time, the pressure column block 11 moves downward together with the cover plate 8 under the magnetic attraction, thereby exerting a downward pressure on the auxiliary pressure column 7, so that the gas inside the auxiliary pressure column 7 is squeezed out and continuously surges downward. When the gas surges downward, the gas exerts downward pressure on the four corners of the chip, compressing and fixing the four corners of the chip, and the gas surging downward eventually flows into the inner cavity of the accommodating chamber 4 through the tube body. Because the movable pressing block 6 and the fixed frame 2 are matched in size, the two remain in a sealed state, and the inner cavity of the accommodating chamber 4 is a closed cavity state, and the gas flowing into the inner cavity of the accommodating chamber 4 can no longer continue to leak out, so that the gas accumulates in the inner cavity of the accommodating chamber 4, and then fills the inner cavity of the accommodating chamber 4. Due to the action of air pressure, the pressure of the movable pressing block 6 to squeeze the chip inward increases, thereby enhancing the clamping effect of the movable pressing block 6 on the chip.

[0034] After confirming that the lower suction piece 3 and the upper suction piece 10 are completely attracted and overlapped, the fixture seat head 1 is manually pulled closed to complete the fixture installation work of the packaged chip.

[0035] The existing packaged chip test generally adopts the wire power-on test, so that the wire is connected to the pin end of the packaged chip, so as to perform various performance tests. When the packaged chip is tested, the connection between the packaged chip pin and the wire will generate heat, and one end of the lower cylinder of the heat conducting rod 13 is in contact with the connection, and the heat is conducted, and then the heat is transferred to the tablet pressing airbag 12 through the upper rectangular parallelepiped end of the heat conducting rod 13, so that the gas inside the tablet pressing airbag 12 is heated and expanded, and the middle part of the tablet pressing airbag 12 begins to expand. When the heat generated at the pin does not exceed the normal range, it is conducted to the tablet pressing airbag 12. The heat energy at the bag 12 causes the amount of expansion of the gas inside the tabletting airbag 12 to not exceed the deformation limit coefficient of the surface of the tabletting airbag 12. However, when the chip pin end is overheated, too much heat is transmitted to the tabletting airbag 12, which in turn causes the internal gas of the tabletting airbag 12 to expand too much. The surface of the tabletting airbag 12 reaches the deformation limit coefficient, and the tabletting airbag 12 ruptures instantly. When the tabletting airbag 12 ruptures, a strong sound will occur, thereby reminding the tester that the pin test end of the chip has been overheated, posing a safety hazard, effectively protecting the tester and the safety of the packaged chip testing process.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for testing packaged chips, comprising a fixture seat (1), characterized in that: A fixing frame (2) is fixedly installed in the middle of the inner cavity of the clamp seat head (1), a lower suction plate (3) is fixedly installed on the top edge of the fixing frame (2), a receiving cavity (4) is opened at the bottom of the inner wall of the fixing frame (2), a spring (5) is fixedly installed on one side of the inner cavity of the receiving cavity (4), a movable pressing block (6) is fixedly installed on one end of the spring (5), four auxiliary pressure columns (7) are movably installed at the four corners of the inner wall of the fixing frame (2), a sealing cover plate (8) is movably installed above the top of the fixing frame (2), and the sealing An insert plate (9) is fixedly mounted on the bottom edge of the cover plate (8), an upper suction plate (10) is fixedly mounted on the bottom end of the insert plate (9), four pressure column blocks (11) are fixedly mounted at the four corners of the bottom end of the cover plate (8), a tablet pressing air bag (12) is fixedly mounted in the middle of the bottom end of the cover plate (8), and a heat conducting rod (13) is fixedly mounted on the inner walls of the front and rear sides of the fixed frame (2); the tablet pressing air bag (12) is rectangular in shape and has an elastic surface; the interior of the tablet pressing air bag (12) is hollow and filled with gas; The overall shape of the heat conducting rod (13) is an inverted T-shape, the upper portion of the heat conducting rod (13) is a rectangular parallelepiped, the lower portion is a cylinder, and there are four cylinders in total, which are evenly arranged, and the heat conducting rod (13) has thermal conductivity; When the chip needs to be tested, the fixture seat (1) is opened, and the chip is manually held and placed in the middle of the inner cavity of the fixed frame (2), so that the two sides of the chip with pins are aligned with the test slots opened on the front and rear inner walls of the fixed frame (2) and inserted. After confirming that the insertion is correct, the chip is pushed downward. When the chip moves downward, the two side edges of the chip without pins press the top of the movable pressing block (6); One end of the lower cylinder of the heat conducting rod (13) contacts the connection portion to conduct heat, and then the heat is transferred to the tablet pressing airbag (12) through the upper rectangular parallelepiped end of the heat conducting rod (13), thereby causing the gas inside the tablet pressing airbag (12) to expand due to the heat, and the middle part of the tablet pressing airbag (12) begins to expand.

2. A packaged chip testing fixture according to claim 1, characterized in that: The top outer edge of the fixing frame (2) is concave downwards, and the depth of the concave is matched to the height of the plug board (9), and the width of the concave is matched to the width of the lower suction plate (3).

3. A packaged chip testing fixture according to claim 1, characterized in that: The lower suction piece (3) and the upper suction piece (10) are both in the shape of a square ring, the lower suction piece (3) and the upper suction piece (10) are of the same size, the lower suction piece (3) and the upper suction piece (10) are both magnetic, and the lower suction piece (3) and the upper suction piece (10) are magnetically attracted to each other.

4. The packaged chip testing fixture according to claim 1, characterized in that: The hole of the accommodating cavity (4) is rectangular, and the size of the hole opening is adapted to the shape and size of the movable pressing block (6). Tubes are provided at both ends of the accommodating cavity (4) and are connected to the bottom side surface of the auxiliary pressing column (7).

5. The packaged chip testing fixture according to claim 1, characterized in that: The movable pressing block (6) is in the shape of a geometric body that is a right-angled trapezoid at the top and a rectangular at the bottom, and the thickness of the rectangular geometric body at the bottom of the movable pressing block (6) is compatible with the thickness of existing standard chips.

6. The packaged chip testing fixture according to claim 1, characterized in that: The auxiliary pressure column (7) and the pressure column block (11) are both cylindrical in shape and have matching sizes. The interior of the auxiliary pressure column (7) is hollow, and the surface of the auxiliary pressure column (7) is elastic and filled with gas. The pressure column block (11) is a solid column.

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