Circuit testing device of mixed signal chip

Abstract

The utility model discloses a circuit testing device for a mixed signal chip, which comprises a base, and a driving assembly used for controlling the chip to test and a cleaning assembly used for dedusting the chip are arranged in the base. The cleaning assembly comprises a piston barrel and a protruding block, the surface of the piston barrel is in through connection with a suction pipe and an exhaust pipe, and the suction pipe is in through connection with the dust removal groove. A sliding shaft is slidably connected into the cleaning assembly, a piston plate is fixedly connected to the end, close to the suction pipe, of the sliding shaft, and an extrusion plate is fixedly connected to the other end, close to the protruding block, of the sliding shaft. The surface of the sliding shaft is sleeved with a reset spring. The cleaning assembly is arranged to blow and remove dust on the chip before the chip is tested, so that the adverse effect of chips on the subsequent test after a bad chip circuit is polished is avoided, and the test accuracy is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to chip testing, and in particular relates to a circuit testing device for a mixed signal chip. Background Art

[0002] Mixed signal chips are integrated circuit chips that integrate analog and digital circuit functions. They integrate analog signal processing circuits and digital signal processing circuits on the same chip. They are multifunctional and can perform multiple functions such as sensor signal conditioning, data acquisition, communication interface, control logic, etc. Mixed signal chips are widely used in consumer electronics, industrial automation, medical equipment, automotive electronics and other fields.

[0003] During the acceptance of mixed signal chips, circuit tests need to be performed on them to ensure that their functions and performance are normal. If it is found during the test that the chip cannot complete the circuit test, the circuit surface needs to be polished for a secondary test. The debris generated during the polishing process will be distributed on the clamping table and around the chip, which will have an adverse effect on subsequent chip tests and affect the test efficiency. Therefore, the utility model proposes a circuit testing device for mixed signal chips. Utility Model Content

[0004] The purpose of the utility model is to provide a circuit testing device for a mixed signal chip to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circuit testing device for a mixed signal chip, comprising a base, a protective cover is fixedly installed above the surface of the base, a clamping table and a tester are arranged above the interior of the base, a dust removal groove is opened on the surface of the clamping table, and a driving component for controlling the chip to perform testing operations and a cleaning component for removing dust from the chip are arranged inside the base; the cleaning component comprises a piston barrel and a bump, a suction pipe and an exhaust pipe are through-connected to the surface of the piston barrel, and the suction pipe is through-connected to the dust removal groove; a sliding shaft is slidably connected inside the cleaning component, one end of the sliding shaft close to the suction pipe is fixedly connected to the piston plate, and the other end of the sliding shaft close to the bump is fixedly connected to the extrusion plate; a reset spring is sleeved on the surface of the sliding shaft.

[0006] Preferably, the driving assembly comprises a servo motor, an output end of the servo motor is fixedly connected to a lead screw, and the lead screw is fixedly connected to the protrusion.

[0007] Preferably, a driving slider is provided on the threaded sleeve on the surface of the screw rod, and the driving slider is fixedly connected to the tester; a positioning column is provided on the surface of the tester; a limiting column is slidably penetrated on the surface of the driving slider, and the limiting column is fixedly connected to the base.

[0008] Preferably, a counter for counting the number of chips tested is provided on the surface of the base.

[0009] Preferably, a radiator is provided on the surface of the protective cover; the clamping platform slides on the upper surface of the base, and a compression spring is provided between the clamping platform and the base; both the suction pipe and the exhaust pipe are provided with one-way valves, and the one-way valves are in opposite directions.

[0010] The beneficial effects of the utility model are:

[0011] The utility model provides a cleaning component to suction and remove dust from the chip before the chip test, thereby avoiding the adverse effect of debris from polishing a bad chip circuit on subsequent tests, thereby improving the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a circuit testing device for a mixed signal chip;

[0013] Figure 2 It is a schematic diagram of the cleaning component structure;

[0014] Figure 3 It is a schematic diagram of the drive component structure;

[0015] In the figure: 1. base; 2. protective cover; 3. radiator; 4. counter; 5. clamping table; 51. compression spring; 6. tester; 61. positioning column; 62. driving slider; 63. limit column; 7. driving assembly; 71. servo motor; 72. screw rod; 8. cleaning assembly; 81. piston barrel; 82. suction pipe; 83. exhaust pipe; 84. sliding shaft; 85. piston plate; 86. extrusion plate; 87. reset spring; 88. bump. DETAILED DESCRIPTION

[0016] During the manufacturing and use of mixed signal chips, accurate circuit testing is required to ensure their normal functions and performance. During the chip testing process, existing circuit testing devices often cause errors in test data due to dust or foreign matter adsorbed on the surface of the chip during transportation or manual handling, which affects the test efficiency.

[0017] Therefore, if Figure 1 As shown, the utility model proposes a circuit test device for a mixed signal chip, comprising a base 1, a protective cover 2 is fixedly installed on the surface of the base 1, a clamping table 5 and a tester 6 are arranged on the upper part of the base 1, and a dust removal groove is opened on the surface of the clamping table 5; a driving component 7 for controlling the chip to perform a test operation and a cleaning component 8 for removing dust from the chip are arranged inside the base 1;

[0018] like Figure 2As shown, the cleaning component 8 includes a piston barrel 81 and a protrusion 88. The surface of the piston barrel 81 is connected with a suction pipe 82 and an exhaust pipe 83, and the suction pipe 82 is connected with the dust removal groove. A sliding shaft 84 is slidably connected inside the cleaning component 8. One end of the sliding shaft 84 close to the suction pipe 82 is fixedly connected to a piston plate 85, and the other end of the sliding shaft 84 close to the protrusion 88 is fixedly connected to an extrusion plate 86. A return spring 87 is sleeved on the surface of the sliding shaft 84.

[0019] like Figure 3 As shown, the driving assembly 7 includes a servo motor 71 , and a lead screw 72 is fixedly connected to the output end of the servo motor 71 ; the lead screw 72 is fixedly connected to the protrusion 88 .

[0020] A driving slider 62 is threadedly sleeved on the surface of the screw rod 72, and the driving slider 62 is fixedly connected to the tester 6; a positioning column 61 is provided on the surface of the tester 6; a limiting column 63 is slidably penetrated on the surface of the driving slider 62, and the limiting column 63 is fixedly connected to the base 1.

[0021] A counter 4 for counting the number of chips tested is disposed on the surface of the base 1 .

[0022] A radiator 3 is provided on the surface of the protective cover 2; the clamping platform 5 slides on the upper surface of the base 1, and a compression spring 51 is provided between the clamping platform 5 and the base 1; both the suction pipe 82 and the exhaust pipe 83 are provided with a one-way valve inside, and the one-way valves are in opposite directions.

[0023] The working principle and use process of the utility model are as follows: the chip is placed on the clamping table 5, and when the servo motor 71 works, its output end drives the screw rod 72 to rotate, and a driving slider 62 is provided on the threaded sleeve of the screw rod 72. When the screw rod 72 rotates, the driving slider 62 moves on the screw rod 72; since the driving slider 62 is fixedly connected to the tester 6, the tester 6 is driven to move downward to test the chip on the clamping table 5;

[0024] A compression spring 51 is provided between the clamping platform 5 and the base 1, so that the clamping platform 5 can move up and down within a certain range, playing a role of unloading force;

[0025] A limiting column 63 is slidably provided on the surface of the driving slider 62, and the limiting column 63 is fixedly connected to the base 1 to ensure that the driving slider 62 moves stably along a predetermined direction; a protrusion 88 is also fixedly connected to the screw rod 72, and the protrusion 88 moves when the screw rod 72 rotates, so as to trigger the cleaning component 8 to work;

[0026] When the screw rod 72 rotates and drives the protrusion 88 to move, the protrusion 88 gradually approaches the extrusion plate 86 in the cleaning assembly 8. When the protrusion 88 contacts the extrusion plate 86, it pushes the extrusion plate 86 to move. The extrusion plate 86 drives the sliding shaft 84 to slide in the piston barrel 81. The end of the sliding shaft 84 close to the suction pipe 82 is fixedly connected to the piston plate 85. When the sliding shaft 84 moves, it drives the piston plate 85 to move toward the suction pipe 82.

[0027] At this time, since the surface of the piston barrel 81 is connected with the suction pipe 82 and the exhaust pipe 83, and the suction pipe 82 is connected with the dust removal tank, the exhaust pipe 83 and the suction pipe 82 are both provided with one-way valves in opposite directions;

[0028] When the piston plate 85 moves in the opposite direction to the suction pipe 82, the one-way valve inside the suction pipe 82 opens, and the one-way valve inside the exhaust pipe 83 closes, and the debris is sucked into the piston barrel 81 through the dust removal groove and the suction pipe 82, thereby realizing dust removal; when the piston plate 85 moves in the direction of the suction pipe 82, the gas and debris in the piston barrel 81 are discharged through the exhaust pipe 83, and a collection bucket is provided under the exhaust pipe 83 to collect the debris.

[0029] 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 circuit testing device for a mixed signal chip, comprising a base (1), a protective cover (2) fixedly mounted above the surface of the base (1), a clamping table (5) and a tester (6) arranged above the interior of the base (1), a dust removal groove being provided on the surface of the clamping table (5), characterized in that: The base (1) is provided with a driving component (7) for controlling the chip to perform a test operation and a cleaning component (8) for removing dust from the chip; the cleaning component (8) comprises a piston barrel (81) and a protrusion (88); a suction pipe (82) and an exhaust pipe (83) are connected through the surface of the piston barrel (81); the suction pipe (82) is connected through the dust removal groove; a sliding shaft (84) is slidably connected inside the cleaning component (8); one end of the sliding shaft (84) close to the suction pipe (82) is fixedly connected to a piston plate (85); the other end of the sliding shaft (84) close to the protrusion (88) is fixedly connected to an extrusion plate (86); a return spring (87) is sleeved on the surface of the sliding shaft (84).

2. The circuit testing device for a mixed signal chip according to claim 1, characterized in that: The drive assembly (7) comprises a servo motor (71), the output end of the servo motor (71) is fixedly connected to a lead screw (72), and the lead screw (72) is fixedly connected to a protrusion (88).

3. The circuit testing device for a mixed signal chip according to claim 2, characterized in that: A driving slider (62) is threadedly sleeved on the surface of the screw rod (72), and the driving slider (62) is fixedly connected to the tester (6); a positioning column (61) is provided on the surface of the tester (6); a limiting column (63) is slidably penetrated on the surface of the driving slider (62), and the limiting column (63) is fixedly connected to the base (1).

4. The circuit testing device for a mixed signal chip according to claim 3, characterized in that: The surface of the base (1) is provided with a counter (4) for counting the number of chips tested.

5. The circuit testing device for a mixed signal chip according to claim 1, characterized in that: A heat sink (3) is provided on the surface of the protective cover (2); the clamping platform (5) slides on the upper surface of the base (1), and a compression spring (51) is provided between the clamping platform (5) and the base (1); and one-way valves are provided inside the suction pipe (82) and the exhaust pipe (83), and the one-way valves are in opposite directions.

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