CN118409189A - A hardware testing device for electronic information engineering - Google Patents

Abstract

The application relates to the technical field of hardware detection, in particular to hardware detection equipment for electronic information engineering; comprises a detection table and a contact pin above the detection table; the contact pins are fixedly connected to the lower surface of the needle plate; a placing groove is formed in the upper surface of the detection table and located right below the needle plate; the center of the upper surface of the needle plate is fixedly connected with an output shaft of the air cylinder; the vertical cylinder is fixedly connected to the upper surface of the detection table through a bracket; the outer wall of the needle plate is sleeved with the sleeve in a movable sealing manner; according to the application, the sleeve is sleeved on the outer wall of the needle plate, so that before the needle plate drives the contact pin to detect the circuit board, the needle plate is controlled to move up and down in the sleeve, and dust on the circuit board is transferred after being blown up, so that the influence of impurities on the circuit board on the detection stability of the circuit board is avoided; compared with the existing circuit board which is subjected to dust cleaning and then placed circuit board detection, the application avoids the reattachment of dust in the transferring and placing process of the circuit board, thereby improving the detection precision.

Description

A hardware testing device for electronic information engineering

Technical Field

The invention relates to the technical field of hardware detection, in particular to a hardware detection device for electronic information engineering.

Background technique

Circuit boards are an important part of hardware. During the troubleshooting and maintenance process, the circuit boards will be tested. Before the test, the operator will place the circuit board to be tested on the surface of the test table, and after the circuit board is fixed, the test equipment will be started to drive the test end to move down and contact the circuit board, thus completing the circuit board test process.

Circuit boards that are repaired for troubleshooting have generally been used for a period of time, so that some dust particles are more or less attached to the surface of the circuit board. The presence of dust may affect the electrical contact between the test end and the circuit board pins, resulting in poor signal transmission or poor contact, thereby affecting the accuracy and reliability of the test. Even after the surface of the circuit board is cleaned, the dust may re-attach during the process of transferring the circuit board to the surface of the test bench due to the operation or movement of surrounding personnel, which will still affect the test results.

In view of this, in order to overcome the above technical problems, the present invention proposes a hardware detection device for electronic information engineering, which solves the above technical problems.

Summary of the invention

In order to make up for the shortcomings of the prior art, the present invention proposes a hardware detection device for electronic information engineering. The present invention arranges a sleeve on the outer wall of the needle plate, so that before the needle plate drives the contact needle to detect the circuit board, the needle plate is controlled to move up and down in the sleeve, so that the dust on the circuit board is blown up and then transferred, thereby avoiding the impurities on the circuit board from affecting the stability of the circuit board detection; compared with the existing circuit board that is cleaned of dust and then placed for circuit board detection, the present application avoids the re-adhesion of dust on the circuit board during the transfer and placement process, thereby improving the detection accuracy.

The technical solution adopted by the present invention to solve the technical problem is as follows: the hardware detection equipment for electronic information engineering described in the present invention comprises a detection platform and a stylus on the detection platform; the stylus is fixedly connected to the lower surface of the needle plate; the lower surface of the detection platform is fixedly connected to the legs; the upper surface of the detection platform is provided with a placement groove directly below the needle plate; the placement groove is used to place the circuit board; the center of the upper surface of the needle plate is fixedly connected to the output shaft of the cylinder; the vertical cylinder is fixedly connected to the upper surface of the detection platform through a bracket;

The outer wall of the needle plate is sleeved and movably sealed to the sleeve; the opening of the sleeve faces downward; the bottom of the sleeve is movably sealed to the cylinder output shaft; the inner bottom wall of the sleeve and the upper surface of the needle plate are connected by a tension spring; a one-way air outlet is penetrated through the inner bottom wall of the sleeve; and one-way air inlet is penetrated from top to bottom of the needle plate.

Preferably, the cross-sections of the inner wall of the sleeve and the outer wall of the needle plate are both circular; the inner wall of the sleeve is provided with a spiral groove; the movable block is connected to the movable seal in the spiral groove; the movable block is fixedly connected to the outer wall of the needle plate; a side hole is provided through the lower position of the inner wall of the sleeve; the side hole can rotate around the center of the sleeve as the needle plate moves up and down on the inner wall of the sleeve.

Preferably, an annular rotating groove is coaxially arranged on the inner bottom wall of the sleeve; a rotating ring is rotatably connected in the rotating groove; the upper end of the tension spring is fixedly connected to the lower surface of the rotating ring, and the lower end is fixedly connected to the upper surface of the needle plate.

Preferably, an annular groove is provided on the upper surface of the detection table; the annular groove surrounds the placement groove and is located directly below the sleeve; the inner diameter of the annular groove is adapted to the inner diameter of the sleeve; the outer diameter of the annular groove is adapted to the outer diameter of the sleeve; the lower port of the sleeve is movably sealed with the annular groove.

Preferably, the bottom of the annular groove is corrugated; a notch is provided at the lower position of the inner and outer walls of the sleeve; the notch passes through the lower port of the sleeve; a return groove is provided on the upper inner wall of the notch; a return block is slidably connected in the return groove; the side hole passes through the return block; the return block is slidably and sealingly connected to the inner wall of the notch; the upper end of the return block is connected to the bottom of the return groove by a spring; the lower end of the return block is squeezed by the bottom of the annular groove and can move upward.

Preferably, the inner wall of the sleeve is fixedly connected to the filling bag; the filling bag is made of elastic material; the outer wall of the sleeve is connected to the inner wall of the filling bag and is provided with a through hole; the aperture of the through hole is larger than the aperture of the side hole.

Preferably, the filling bag is arranged along the spiral line of the spiral groove; the inner side of the filling bag bulges spirally after the gas enters; the filling bag extends to the inner bottom wall of the sleeve at the upper end in the spiral direction, and extends to the lower port of the sleeve at the lower end; the inner wall of the sleeve and the filling bag are provided with avoidance grooves at positions corresponding to the filling bag; the filling bag is fixedly connected in the avoidance groove; the shape of the avoidance groove is adapted to the filling bag after it is deflated; the depth of the avoidance groove is adapted to the thickness of the filling bag.

Preferably, there are a plurality of through holes, and the plurality of through holes are arranged along the spiral direction of the filling capsule.

The beneficial effects of the present invention are as follows:

1. The present invention arranges a sleeve on the outer wall of the needle plate, so that before the needle plate drives the contact needle to detect the circuit board, the needle plate is controlled to move up and down in the sleeve, so that the dust on the circuit board is blown up and then transferred, thereby preventing the impurities on the circuit board from affecting the stability of circuit board detection; compared with the existing circuit board that is cleaned of dust before placing the circuit board for detection, the present application avoids the re-attachment of dust on the circuit board during the transfer and placement process, thereby improving the detection accuracy.

The present invention drives the side hole to move circumferentially by the sleeve and drives the side hole to move up and down by the movable block, so that the external gas can be concentrated along the side holes and impact the components on the circuit board in a wider range, so that the dust attached to the components on the circuit board can be blown up and removed more thoroughly, and the accuracy of subsequent detection is further improved.

The present invention drives the filling bag to spirally bulge when the needle plate moves upward on the inner side of the sleeve, and cooperates with the sleeve to drive the filling bag to rotate, so that the floating dust that impacts the circuit board along the side hole can flow from bottom to top under the disturbance of the filling bag, so that the floating dust is easier to float and closer to the one-way air inlet hole. On the one hand, the floating dust on the circuit board in the lower cavity can be cleaned more thoroughly, and on the other hand, the number of times the needle plate moves up and down in the sleeve is reduced, thereby improving the detection efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

Fig. 1 is a perspective view of the present invention;

Fig. 2 is an enlarged view of point A in Fig. 1;

FIG3 is a structural diagram of the annular groove of the present invention;

FIG4 is an enlarged view of point B in FIG3 ;

FIG5 is a perspective view of the bracket, cylinder and sleeve in the present invention;

FIG6 is a perspective view of a cylinder and a sleeve in the present invention;

FIG7 is a cross-sectional view of the sleeve of the present invention;

FIG8 is an enlarged view of point C in FIG7;

FIG9 is an enlarged view of point D in FIG7;

FIG10 is a diagram showing the expanded state of the filling sac in FIG9;

11 is a three-dimensional diagram of the connection between the movable block and the needle plate of the present invention.

In the figure: testing table 1, supporting leg 11, placement groove 12, annular groove 13, needle plate 2, contact pin 21, cylinder 22, bracket 23, one-way air inlet 24, movable block 25, sleeve 3, tension spring 31, one-way air outlet 32, spiral groove 33, rotating groove 34, swivel 35, missing groove 36, return groove 37, through hole 38, avoidance groove 39, return block 4, side hole 41, spring 42, filling bag 5.

Detailed ways

In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

As shown in Figures 1 to 11, the present invention includes the following embodiments:

Embodiment 1:

A hardware testing device for electronic information engineering, comprising a testing platform 1 and a stylus 21 above the testing platform 1; the stylus 21 is fixedly connected to the lower surface of a needle plate 2; the lower surface of the testing platform 1 is fixedly connected to a leg 11; a placement groove 12 is provided on the upper surface of the testing platform 1 directly below the needle plate 2; the placement groove 12 is used to place a circuit board; the center of the upper surface of the needle plate 2 is fixedly connected to the output shaft of a cylinder 22; the vertical cylinder 22 is fixedly connected to the upper surface of the testing platform 1 through a bracket 23;

The outer wall of the needle plate 2 is sleeved and movably sealed with the sleeve 3; the opening of the sleeve 3 faces downward; the bottom of the sleeve 3 is movably sealed and connected to the output shaft of the cylinder 22; the inner bottom wall of the sleeve 3 and the upper surface of the needle plate 2 are connected by a tension spring 31; a one-way air outlet 32 is penetrated through the inner bottom wall of the sleeve 3; and the needle plate 2 is penetrated with a one-way air inlet 24 from top to bottom.

During operation, the circuit boards to be repaired and troubleshooted have generally been used for a period of time, so that some dust particles are more or less attached to the surface of the circuit boards. The presence of dust may affect the electrical contact between the test end and the pins of the circuit boards, resulting in poor signal transmission or poor contact, thereby affecting the accuracy and reliability of the test. Even after the surface of the circuit boards is cleaned, the dust may reattach due to the operation or movement of surrounding personnel during the process of transferring the circuit boards to the surface of the test table 1, which will still affect the test results.

Therefore, when the inspection personnel of the present invention need to inspect hardware, such as the circuit board in the hardware, they will place the circuit board into the placement groove 12, and after adjusting the position of the contact pin 21, start the controller to control the inspection equipment to work, and the inspection equipment will drive the cylinder 22 to extend, and the cylinder 22 will drive the needle plate 2 to move downward, and the needle plate 2 will drive the sleeve 3 to move downward through the tension spring 31, and the lower end opening of the sleeve 3 is larger than the specifications of the placement groove 12 and the circuit board. In this way, as the needle plate 2 and the sleeve 3 move downward, the sleeve 3 will cover the circuit board and the placement groove 12, and the lower end of the sleeve 3 will contact the upper surface of the inspection table 1, so that the lower end of the sleeve 3 cannot continue to move downward, and as the cylinder 22 continues to extend, the output shaft of the cylinder 22 will drive the needle plate 2 in the sleeve 3 The inner side moves downward, and the needle plate 2 divides the internal space of the sleeve 3 into an upper chamber at the upper position and a lower chamber at the lower position. The upper chamber increases in size during the downward movement of the needle plate 2, and the lower chamber decreases in size during the downward movement of the needle plate 2. Negative pressure is formed in the process of increasing the space of the upper chamber, so that the gas in the lower chamber enters the upper chamber along the one-way air inlet hole 24 under the action of the negative pressure. In the process of the gas in the lower chamber entering the upper chamber, the dust attached to the circuit board is driven to flow, so that the dust on the circuit board is taken away. In the process of the cylinder 22 extending to drive the needle plate 2 to move downward, the needle plate 2 will pull the tension spring 31, so that the tension spring 31 transmits the tension to the sleeve 3, so that the lower end of the sleeve 3 is firmly against the upper surface of the detection table 1, and in order to further adsorb the dust attached to the circuit board, the cylinder 22 The needle plate 2 will be controlled to move upward while the tension spring 31 remains pulled, so that the space in the upper cavity becomes smaller, and the gas in the upper cavity is squeezed and discharged along the one-way air outlet 32. It should be noted that in order to prevent the gas discharged from the one-way air outlet 32 from returning to the circuit board, the upper hole of the one-way air outlet 32 will be connected to the air pipe, and the other end of the air pipe will be placed at a position far away from the detection table 1, or the other end of the air pipe will be connected to the purification component. During the upward movement of the needle plate 2, the external gas will enter the inner side of the sleeve 3 along the gap between the lower end of the sleeve 3 and the upper surface of the detection table 1, and impact the circuit board in the placement groove 12, so that the impurities on the circuit board float up, and as the cylinder 22 drives the needle plate 2 to move downward again, the space in the upper cavity becomes larger and forms again. Negative pressure, dust floating in the lower chamber will enter the upper chamber through the one-way air inlet 24, and the needle plate 2 will be repeatedly controlled to move up and down to clean the circuit board. In the process of cleaning the dust attached to the circuit board by moving the needle plate 2 up and down, the contact pin 21 is at a certain distance from the circuit board. During the last downward movement of the needle plate 2, the needle plate 2 will drive the contact pin 21 to contact the contact point of the circuit board, completing the hardware, that is, the circuit board detection process; after completing the circuit board detection, the cylinder 22 will move up to drive the needle plate 2 and the sleeve 3 to move up, so that the circuit board in the placement slot 12 is exposed, and the tension spring 31 will pull the sleeve 3 to move on the outer wall of the needle plate 2, so that the space in the upper chamber is compressed, and the operator can remove the circuit board in the placement slot 12;

The present invention arranges a sleeve 3 on the outer wall of the needle plate 2, so that before the needle plate 2 drives the contact pin 21 to detect the circuit board, the needle plate 2 is controlled to move up and down in the sleeve 3, so that the dust on the circuit board is blown up and then transferred, thereby preventing the impurities on the circuit board from affecting the stability of the circuit board detection; compared with the existing circuit board that is cleaned of dust before placing the circuit board for detection, the present application avoids the re-attachment of dust on the circuit board during the transfer and placement process, thereby improving the detection accuracy.

Embodiment 2:

The cross-sections of the inner wall of the sleeve 3 and the outer wall of the needle plate 2 are both circular; a spiral groove 33 is provided on the inner wall of the sleeve 3; a movable block 25 is movably sealed in the spiral groove 33; the movable block 25 is fixedly connected to the outer wall of the needle plate 2; a side hole 41 is provided through the lower position of the inner wall of the sleeve 3; the side hole 41 can rotate around the center of the sleeve 3 as the needle plate 2 moves up and down on the inner wall of the sleeve 3.

In this embodiment, the inner bottom wall of the sleeve 3 is concentrically provided with an annular rotation groove 34; a rotating ring 35 is rotatably connected in the rotation groove 34; the upper end of the tension spring 31 is fixedly connected to the lower surface of the rotating ring 35, and the lower end is fixedly connected to the upper surface of the needle plate 2.

In this embodiment, an annular groove 13 is provided on the upper surface of the detection platform 1; the annular groove 13 surrounds the placement groove 12 and is located directly below the sleeve 3; the inner diameter of the annular groove 13 is adapted to the inner diameter of the sleeve 3; the outer diameter of the annular groove 13 is adapted to the outer diameter of the sleeve 3; the lower port of the sleeve 3 is movably sealed with the annular groove 13.

In this embodiment, the bottom of the annular groove 13 is corrugated; a notch 36 is provided at the lower position of the inner and outer walls of the sleeve 3; the notch 36 passes through the lower port of the sleeve 3; a return groove 37 is provided on the upper inner wall of the notch 36; the return block 4 is slidably connected to the return groove 37; the side hole 41 passes through the return block 4; the return block 4 is slidably and sealedly connected to the inner wall of the notch 36; the upper end of the return block 4 is connected to the bottom of the return groove 37 by a spring 42; the lower end of the return block 4 is squeezed by the bottom of the annular groove 13 and can move upward.

During operation, after the circuit board is placed in the placement groove 12, the controller cylinder 22 extends to drive the needle plate 2 and the sleeve 3 to move downward, and the lower end of the sleeve 3 will enter the annular groove 13 during the downward movement. Since the lower end of the sleeve 3 and the annular groove 13 are movably sealed, the lower end of the sleeve 3 is further sealed. As the needle plate 2 continues to move downward, the needle plate 2 will drive the movable block 25 of the outer wall to move downward. During the downward movement of the movable block 25, it will move in the spiral groove 33, so that the sleeve 3 rotates under the cooperation of the movable block 25 and the spiral groove 33. Since the upper end of the tension spring 31 is fixedly connected to the lower surface of the swivel 35, and the lower end is fixedly connected to the upper surface of the needle plate 2, the setting of the tension spring 31 does not affect the rotation of the sleeve 3, so that the sleeve 3 The sleeve 3 can rotate smoothly, and the lower port of the sleeve 3 also rotates smoothly in the annular groove 13. The gas in the lower chamber will enter the upper chamber along the one-way air inlet 24, and then the cylinder 22 will drive the needle plate 2 to move upward. The upward needle plate 2 will move inside the sleeve 3 when the sleeve 3 is pulled by the downward tension spring 31. During the upward movement of the needle plate 2, the movable block 25 will be driven to move in the spiral groove 33 again, so that the sleeve 3 rotates in the opposite direction, and the gas in the upper chamber is squeezed away by the upward movement of the needle plate 2. The space in the lower chamber forms a negative pressure during the upward movement of the needle plate 2. The lower port of the sleeve 3 is movably sealed with the annular groove 13, so the external gas will enter the lower chamber more concentratedly along the side hole 41, thereby increasing the impact force of the gas entering the lower chamber. The side hole 41 rotates with the rotation of the sleeve 3. Thereby changing the air intake direction of the side hole 41, allowing the external air to enter the lower cavity along the side hole 41 in different directions, so that the circuit board can be concentratedly impacted by airflow in different directions, thereby improving the airflow impact range and effect, and making the impurities on the circuit board be blown up more thoroughly. In addition, since the bottom of the annular groove 13 is corrugated, the spring 42 will give a downward force to the return block 4, so that the lower end of the return block 4 is against the bottom of the annular groove 13 under the action of the spring 42. As the lower end of the sleeve 3 and the annular groove 13 rotate relative to each other, the position where the lower end of the return block 4 abuts against the bottom of the annular groove 13 changes. In this way, when the lower end of the return block 4 abuts against the bottom of the annular groove 13 at the trough to peak stage, the annular groove 1 The bottom of the groove 3 will squeeze the return block 4 to move upward. If the return block 4 is against the bottom of the annular groove 13 at the stage from the peak to the trough, the spring 42 will drive the return block 4 to move downward. As the sleeve 3 rotates, the return block 4 will move up and down in the missing groove 36, and the side hole 41 will also move with the return block 4 while moving up and down, thus changing the height of the gas filled into the lower cavity by the side hole 41, so that components of different heights on the circuit board can be impacted, so that the dust on the circuit board is impacted more thoroughly; as the needle plate 2 moves downward again, the dust floating in the lower cavity follows the air flow along the one-way air inlet 24 into the upper cavity, and this is repeated, so that the dust attached to the circuit board is completely sucked away after being blown up, further improving the accuracy of subsequent detection;

The present invention drives the side hole 41 to move circumferentially by the sleeve 3 and drives the side hole 41 to move up and down by the movable block 25, so that the external gas can be concentrated along the side hole 41 and impact the components on the circuit board in a wider range, so that the dust attached to the components on the circuit board can be blown up more thoroughly and removed, further improving the accuracy of subsequent detection.

Embodiment 3:

The inner wall of the sleeve 3 is fixedly connected to the filling bag 5; the filling bag 5 is made of elastic material; the outer wall of the sleeve 3 is connected to the inner wall of the filling bag 5 and a through hole 38 is provided; the aperture of the through hole 38 is larger than the aperture of the side hole 41.

In this embodiment, the filling bag 5 is arranged along the spiral line of the spiral groove 33; the inner side of the filling bag 5 bulges in a spiral manner after the gas enters; the filling bag 5 extends to the inner bottom wall of the sleeve 3 at the upper end in the spiral direction, and extends to the lower end of the sleeve 3; an avoidance groove 39 is provided at a position corresponding to the inner wall of the sleeve 3 and the filling bag 5; the filling bag 5 is fixedly connected in the avoidance groove 39; the shape of the avoidance groove 39 is adapted to the filling bag 5 after it is deflated; the depth of the avoidance groove 39 is adapted to the thickness of the filling bag 5.

In this embodiment, there are multiple through holes 38 ; the multiple through holes 38 are arranged along the spiral direction of the filling capsule 5 .

During operation, when the lower end of the sleeve 3 is pressed against the annular groove 13 by the tension spring 31, the cylinder 22 drives the needle plate 2 to move upward inside the sleeve 3, so that the gas in the upper chamber is pressurized and discharged along the one-way air outlet 32, and the space in the lower chamber becomes larger to form a negative pressure. The aperture of the through hole 38 is larger than the aperture of the side hole 41, and the speed at which the external gas enters the filling bag 5 along the through hole 38 is higher than the speed at which the external gas enters the lower chamber along the side hole 41, so that the filling bag 5 can be smoothly inflated during the upward movement of the needle plate 2. In addition, since there are multiple through holes 38 , multiple through holes 38 are arranged along the spiral direction of the filling capsule 5, so as the needle plate 2 moves upward, the external gas can enter the filling capsule 5 along more through holes 38, so that the filling capsule 5 swells quickly. It should be noted that the degree of swelling of the filling capsule 5 is limited and will not interfere with the components on the upper surface of the circuit board. The filling capsule 5 is arranged along the spiral line direction of the spiral groove 33, so that the filling capsule 5 will swell in a spiral manner. The swollen filling capsule 5 will move inside the sleeve 3 as the sleeve 3 rotates. The spiral filling capsule 5 can be understood as a spiral The auger of the extruder and the bulging filling capsule 5 can disturb the gas inside the sleeve 3 from bottom to top. The floating dust formed by the external gas entering the lower cavity along the side hole 41 and impacting the circuit board will move upward with the disturbance of the filling capsule 5, making the floating dust easier to float and closer to the one-way air inlet 24. As the needle plate 2 moves downward, the needle plate 2 will squeeze the bulging filling capsule 5, and the gas inside the filling capsule 5 will be discharged along the through hole 38 after being squeezed. The thickness of the filling capsule 5 is adapted to the thickness of the avoidance groove 39, and the filling capsule 5 is placed in the avoidance groove 39 after being deflated. , so that the filling capsule 5 can fill the gap between the avoidance groove 39 and the outer wall of the needle plate 2 after it is deflated, and on the other hand, it is difficult for the gas to pass through the needle plate 2 and flow toward the part of the filling capsule 5 above the needle plate 2, so that the part of the filling capsule 5 passed by the needle plate 2 remains deflated, so that the gas inside the filling capsule 5 is squeezed out along the through hole 38, and the downward moving needle plate 2 will form a negative pressure in the upper cavity, so that the dust floating in the lower cavity quickly enters the upper cavity along the one-way air inlet 24 with the air flow; the deflated filling capsule 5 will not affect the subsequent detection of the stylus 21;

The present invention drives the filling capsule 5 to spirally bulge during the process of the needle plate 2 moving upward on the inner side of the sleeve 3, and cooperates with the sleeve 3 to drive the filling capsule 5 to rotate, so that the floating dust that impacts the circuit board along the side hole 41 can flow from bottom to top under the disturbance of the filling capsule 5, so that the floating dust is easier to float and closer to the one-way air inlet 24. On the one hand, the floating dust on the circuit board in the lower cavity is cleaned more thoroughly, and on the other hand, the number of times the needle plate 2 moves up and down in the sleeve 3 is reduced, thereby improving the detection efficiency.

Embodiment 4:

The side hole 41 is connected to a hose; the hose is connected to a purification component, such as a filter; the gas coming out of the one-way air outlet 32 enters the purification component along the air pipe, and the purification component is fixedly connected to the outer wall of the sleeve 3. As the gas is purified by the purification component, the purified gas will enter the side hole 41 along the hose, preventing the gas with floating dust around the sleeve 3 from entering the lower cavity along the side hole 41, thereby avoiding secondary pollution; the side hole 41 is detachably connected to the hose, and can be connected and disconnected selectively.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in FIG1 , and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention; in addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

The basic principles, main features and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims (8)

1. The hardware detection equipment for electronic information engineering comprises a detection table (1) and a contact pin (21) above the detection table (1); the contact pins (21) are fixedly connected to the lower surface of the needle plate (2); a placing groove (12) is formed in the upper surface of the detection table (1) and is positioned right below the needle plate (2); the center of the upper surface of the needle plate (2) is fixedly connected with an output shaft of the air cylinder (22); the vertical air cylinder (22) is fixedly connected to the upper surface of the detection table (1) through a bracket (23); the method is characterized in that:

The outer wall of the needle plate (2) is sleeved with the sleeve (3) in a movable sealing way; the opening of the sleeve (3) faces downwards; the bottom of the sleeve (3) is movably and hermetically connected with the output shaft of the air cylinder (22); the inner bottom wall of the sleeve (3) is connected with the upper surface of the needle plate (2) through a tension spring (31); a unidirectional air outlet hole (32) is formed in the inner bottom wall of the sleeve (3) in a penetrating manner; the needle plate (2) is provided with a unidirectional air inlet hole (24) in an up-down penetrating way.

2. The hardware detection device for electronic information engineering according to claim 1, wherein: the cross section of the inner wall of the sleeve (3) and the outer wall of the needle plate (2) are circular; the inner wall of the sleeve (3) is provided with a spiral groove (33); the spiral groove (33) is movably connected with the movable block (25) in a sealing way; the movable block (25) is fixedly connected with the outer wall of the needle plate (2); a side hole (41) is formed in the lower portion of the inner wall of the sleeve (3) in a penetrating manner; the side holes (41) can rotate around the center of the sleeve (3) along with the needle plate (2) in the process of moving up and down on the inner wall of the sleeve (3).

3. The hardware detection device for electronic information engineering according to claim 2, wherein: annular rotating grooves (34) are concentrically arranged on the inner bottom wall of the sleeve (3); the rotating groove (34) is rotationally connected with a rotating ring (35); the upper end of the tension spring (31) is fixedly connected to the lower surface of the swivel (35), and the lower end of the tension spring is fixedly connected to the upper surface of the needle plate (2).

4. The hardware detection device for electronic information engineering according to claim 2, wherein: an annular groove (13) is formed in the upper surface of the detection table (1); the annular groove (13) surrounds the placing groove (12) and is positioned right below the sleeve (3); the inner diameter of the annular groove (13) is matched with the inner diameter of the sleeve (3); the outer diameter of the annular groove (13) is matched with the outer diameter of the sleeve (3); the lower port of the sleeve (3) is movably matched with the annular groove (13) in a sealing way.

5. The hardware detection device for electronic information engineering according to claim 4, wherein: the bottom of the annular groove (13) is corrugated; a notch (36) is arranged at the lower position of the inner wall and the outer wall of the sleeve (3); the notch (36) penetrates through the lower port of the sleeve (3); a return groove (37) is formed on the upper inner wall of the notch groove (36); the return groove (37) is slidably connected with the return block (4); the side hole (41) penetrates through the return block (4); the return block (4) is in sliding sealing connection with the inner wall of the notch (36); one end, close to the upper part, of the return block (4) is connected with the bottom of the return groove (37) through a spring (42); the lower end of the return block (4) is pressed by the bottom of the annular groove (13) and can move upwards.

6. The hardware detection device for electronic information engineering according to claim 2, wherein: the inner wall of the sleeve (3) is fixedly connected with a filling bag (5); the filling bag (5) is made of an elastic material; the outer wall of the sleeve (3) is communicated with the inner wall of the filling bag (5) and is provided with a through hole (38); the aperture of the through hole (38) is larger than that of the side hole (41).

7. The hardware detection device for electronic information engineering according to claim 6, wherein: the filling bag (5) is arranged along the spiral line of the spiral groove (33); the inner side of the filling bag (5) is spirally bulged after entering gas; the upper end of the filling bag (5) extends to the inner bottom wall of the sleeve (3) in the spiral direction, and the lower end extends to the lower port of the sleeve (3); an avoidance groove (39) is formed in the inner wall of the sleeve (3) at a position corresponding to the filling bag (5); the filling bag (5) is fixedly connected in the avoiding groove (39); the shape of the avoiding groove (39) is matched with that of the collapsed filling bag (5); the depth of the avoidance groove (39) is adapted to the thickness of the filling bag (5).

8. The hardware detection device for electronic information engineering according to claim 7, wherein: the number of the through holes (38) is a plurality; a plurality of the through holes (38) are arranged along the spiral direction of the filling bag (5).