CN216248158U - Electrostatic discharge test system - Google Patents

Abstract

The utility model relates to the technical field of electrostatic discharge testing, in particular to an electrostatic discharge testing system. An electrostatic discharge test system comprising: control equipment, test head and test zone. The test head is driven by a control device to move in six degrees of freedom, comprising: a picking tool, an electrostatic gun and an operating tool assembly fixed to a support, the support being connected to a control device. A test zone comprising: insulating testboard and scribing testboard. The electrostatic discharge test system has the following advantages: the labor cost is reduced, the testing precision and the testing efficiency are improved, and the harm of static electricity to the body health of testing personnel is avoided.

Description

Electrostatic discharge test system

Technical Field

The utility model relates to the technical field of electrostatic discharge testing, in particular to an electrostatic discharge testing system.

Background

With the development of electronic devices, the functions are more and more powerful, and the requirements of users on products are higher and higher. The quality of the electronic products is good and bad, and a plurality of external factors can generate adverse effects on the electronic products. For example, static electricity can be a significant hazard to electronic products and can even cause damage to electronic equipment. Electrostatic discharge (ESD) can cause failures or malfunctions of electronic equipment, cause electromagnetic interference, can break down integrated circuits and precise electronic components, or promote component aging, reducing production yield. The static adsorbs dust, reduces the insulation resistance of the components and shortens the service life. The electromagnetic field generated by electrostatic discharge has large amplitude (up to hundreds of volts/meter) and extremely wide frequency spectrum (from dozens of mega to dozens of giga) and causes interference and even damage to electronic products.

Therefore, the esd test is performed during the assembly process of electronic products, such as mobile phones, tablet computers, displays, and the like. At present, taking an electrostatic discharge test of a mobile phone as an example, a common test method is to place the mobile phone on an insulated test bench, perform electrostatic discharge on the mobile phone through an electrostatic gun, manually touch a mobile phone screen, and check whether the screen is lit, whether videos, music and the like being played are interrupted or abnormal images or sounds occur, whether contact of each jack is good, whether fingerprint identification can be normally identified, and the like. A large amount of testers are required to participate, the labor cost is increased, the testing precision is poor, the testing efficiency is low, and static electricity causes great harm to the health of the testers.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention aims to provide an electrostatic discharge test system, which uses a control device to control a test device to automatically operate and detect various functions of a device to be tested, and solves the problems that the labor cost is increased, the test precision is poor, the test efficiency is low, and static electricity causes great harm to the health of a tester.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

an electrostatic discharge test system, comprising: the control equipment is arranged in a control cabinet, and the control cabinet is provided with a top plate;

a test head driven by the control device to move in six degrees of freedom, comprising: a picking tool, an electrostatic gun and an operating tool assembly secured to a support, the support being connected to the control device;

a test zone comprising:

the insulation test bench comprises an insulation support, the insulation support is placed on the ground, a metal plate is arranged on the upper surface of the insulation support, and the metal plate is electrically connected with the ground;

the screen scribing test bench is arranged on the upper surface of the top plate and comprises an object placing bench and first image acquisition equipment, the object placing bench is arranged below the first image acquisition equipment, first image information of tested equipment is collected through the first image acquisition equipment, and the collected first image information is transmitted to the control equipment.

Further, the operating tool assembly includes an operator, a fingerprint device, and an electrostatic brush.

Further, the picking tool, the manipulator, the fingerprint device and the electrostatic brush are respectively connected with the bracket through a telescopic mechanism.

Furthermore, the telescopic mechanism is a cylinder transmission mechanism, a cylinder of the cylinder transmission mechanism is fixed on the support, and the picking tool, the manipulator, the fingerprint device and the electrostatic brush are respectively connected with a piston of each cylinder transmission mechanism.

Further, the test head further comprises:

and the second image acquisition equipment is fixed on the bracket and used for acquiring second image information of the test head and transmitting the second image information to the control equipment.

Further, the object placing table comprises a base, the base can move in a first direction, and a clamping device is arranged on the base.

Furthermore, the first image acquisition device is connected with the top plate through a fixing frame, and the fixing frame can rotate relative to the top plate.

Further, the test area further comprises:

camera testboard includes:

a gripper for gripping a device under test, the gripper being switchable between 0 ° and 180 °, one surface of the device under test being parallel to the top plate when the gripper is at 0 °;

and the pattern sample is arranged below the clamp holder.

Further, the electrostatic discharge test system further includes:

and the test platform is arranged on the top plate and provided with a plurality of devices to be tested, and each device to be tested contains one device to be tested.

Further, the electrostatic discharge test system further includes:

and the gun head warehouse is arranged on the top plate and is provided with at least one gun head position.

Compared with the prior art, the electrostatic discharge test system has the following advantages:

the technical scheme has the advantages of reducing the labor cost, improving the testing precision and the testing efficiency and avoiding the harm of static electricity to the health of testers.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a perspective view of an electrostatic discharge test system according to an embodiment of the present invention;

FIG. 2 is a perspective view of a test head according to an embodiment of the present invention;

FIG. 3 is an enlarged view of section A of FIG. 2 of a test head according to an embodiment of the present invention;

FIG. 4 is a perspective view of a screen scribing test bed according to an embodiment of the present invention;

fig. 5 is a perspective view of the object placing table according to the embodiment of the utility model.

Description of reference numerals:

100-test head, 110-picking tool, 120-operating tool component, 121-operator, 122-electrostatic brush, 123-fingerprint device, 124-telescopic mechanism, 130-electrostatic gun, 140-second image acquisition device, 150-support, 200-control device, 300-test area, 310-insulating test table, 320-camera test table, 330-screen-scribing test table, 331-first image acquisition device, 332-object table, 3321-base, 3322-clamping device, 3323-object table, 3324-guide rail, 333-fixing frame, 400-object table to be tested, and 500-gun head library.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The descriptions in this document referring to "first", "second", "upper", "lower", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," "upper," "lower," may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it is necessary that a person skilled in the art can realize the combination, and the technical solutions in the embodiments are within the protection scope of the present invention.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1, an electrostatic discharge test system includes: control device 200, test head 100, and test zone 300. The control device 200 is arranged in a control cabinet having a top plate. Test head 100, as shown in fig. 2, is driven in motion in six degrees of freedom by the control device 200, comprising: a picking tool 110, an electrostatic gun 130 and an operating tool assembly 120 fixed to a carriage 150, said carriage 150 being connected to said control device 200. The test zone 300 includes: an insulation test station 310 and a screen scribing test station 330. The insulation test bench 310 includes an insulation support placed on the ground, and a metal plate is disposed on an upper surface of the insulation support and electrically connected to ground. The screen scribing test bench 330 is disposed on the upper surface of the top plate, as shown in fig. 4, the screen scribing test bench 330 includes a placement bench 332 and a first image capturing device 331, the placement bench 332 is disposed below the first image capturing device 331, first image information of a device to be tested is captured by the first image capturing device 331, and the captured first image information is transmitted to the control device 200.

The following description will take a mobile phone as an example of a device under test. Besides the mobile phone, the testing system can also be used for carrying out electrostatic discharge testing on various electronic devices such as a tablet personal computer and a display screen.

The top plate of the control cabinet is provided with a mechanical arm, and the mechanical arm can drive the test head 100 connected with the mechanical arm to move on six degrees of freedom under the control of the control equipment 200 in the control cabinet, so that the test head 100 can move and rotate freely as required. The cradle 150 of the test head 100 is connected to the robotic arm by a connector, the test head 100 and the control device 200 communicate via cables, circuits and electronics, and the cables may connect the test head 100 and the control device 200 via the connector and the interior of the robotic arm. The bracket 150 may be formed in a box shape as shown in fig. 2, and cables, circuits, electronic components, and the like are all disposed inside the box, so that the appearance is neat, and the cables and surrounding components cannot interfere with each other during the test process, thereby affecting the test.

The system is provided with a plurality of test areas 300 for performing a plurality of tests, respectively, as desired. Various tests such as screen lighting, fingerprint identification, audio playing, video playing, conversation and the like can be performed on the mobile phone after electrostatic discharge on the insulation test bench 310. However, the test station 310 needs to be made of a wooden table-like shape that is placed on the ground, as shown in fig. 1, because the external electromagnetic interference needs to be avoided during the test process. And a metal plate is laid on the insulating support and must be grounded so as to eliminate the influence of static electricity caused by other surrounding factors and ensure the accuracy of the test. The upper surface of the metal plate is provided with the insulating pad, and the mobile phone is placed on the insulating pad for testing, so that the testing accuracy is further ensured. The mobile phone is picked up by the picking tool 110 of the test head 100 and then placed on the insulating pad, and the control device 200 controls the rotating bracket 150 so that the electrostatic gun 130 is aligned with a designated test point of the mobile phone to apply static electricity to the mobile phone. After the static electricity is removed by the operation tool assembly 120, various tests such as lighting, fingerprint recognition, audio playing, video playing, call and the like are performed on the mobile phone, a change result of the above functions is obtained, and the change result is transmitted to the control device 200 to be calculated and processed, so that a test result is obtained.

The mobile phone is picked up by the picking tool 110 and then moved to the object placing table 332 of the screen scribing test table 330, the mobile phone is fixed on the object placing table 332, the screen of the mobile phone is scribed by the operating tool assembly 120, preferably, nine-grid squares are scribed on the screen, first image information of the lines of the nine-grid squares on the screen is acquired by the first image acquisition device, and the first image information is calculated and processed in the control device 200 to obtain a test result.

Through the test system with the structure, the automatic control of the movement and rotation of the test head 100 by the control equipment 200 and the automatic control of the static gun 130, the operation tool assembly 120 and the picking tool 110 reduce manual operation, save human resources and labor cost, realize the accurate positioning of the test head 100 and improve the test accuracy and test efficiency. In the whole testing process, only before the testing is started, the initial testing parameters and other operations need to be manually input into the control equipment 200, the rest processes do not need manual participation, static electricity generated in the testing process cannot harm a human body, and the human health is guaranteed.

Specifically, as shown in fig. 3, the operating tool assembly 120 includes an operator 121, a fingerprint device 123, and an electrostatic brush 122.

Various tests such as lighting, fingerprint recognition, audio playback, video playback, and call are performed on the mobile phone, and a line is drawn on the screen of the mobile phone by the operator 121. Fingerprint information is input through a fingerprint identification area of the touch mobile phone of the fingerprint device 123. After static electricity is loaded on the mobile phone through the static gun 130, the mobile phone is touched through the static brush 122, the static electricity on the mobile phone is released, and then corresponding tests are carried out through the operator 121 and the fingerprint device 123.

Further, the picking tool 110, the manipulator 121, the fingerprint device 123 and the electrostatic brush 122 are respectively connected to the bracket 150 through a telescopic mechanism 124.

The picking tool 110, the manipulator 121, the fingerprint device 123 and the electrostatic brush 122 are respectively connected with the bracket 150 through the telescopic mechanism 124, and after the test head 100 moves to a specified test point in the test process, the picking tool 110, the manipulator 121, the fingerprint device 123 and the electrostatic brush 122 are finely adjusted through the control device 200, so that each tool can be accurately positioned at the specified test point.

Further, the telescopic mechanism 124 is a cylinder transmission mechanism, a cylinder of the cylinder transmission mechanism is fixed on the bracket 150, and the picking tool 110, the manipulator 121, the fingerprint device 123 and the electrostatic brush 122 are respectively connected with a piston of each cylinder transmission mechanism.

Further, as shown in fig. 1, the test head 100 further includes a second image capturing device 140 fixed to the support 150, and configured to capture second image information of the test head 100 and transmit the second image information to the control device 200.

The second image information is image information of the gun head of the electrostatic gun 130, the touch end of the operator 121, the touch end of the fingerprint device 123, the brush end of the electrostatic brush 122 and the pick-up end of the pick-up tool 110, whether the position of the test head 100 is the designated test point position or not is judged in the control device 200 through the second image information, and if not, the test head is controlled to move to the test point through the control device 200 to perform accurate positioning.

Further, as shown in fig. 5, the object placing table 332 includes a base 3321, the base 3321 is movable along a first direction, and a fastening device 3322 is disposed on the base 3321.

The test point is adjusted to be aligned with the first image capturing device 331 by moving the base 3321 in a first direction. The guide rail mechanism 3324 can be fixed on the top plate, and the bottom of the base is provided with a sliding block matched with the guide rail mechanism 3324, and the sliding block is driven by a motor to slide on the guide rail mechanism 3324.

The mobile phone is fixed by the clamping device 3322. In particular, object stage 3323 is disposed on base 3321, and preferably a cushion is disposed on the surface of object stage 3323 to prevent object stage 3323 from scratching the surface of the mobile phone. Limiting blocks are arranged at three adjacent edges of the object stage 3323, and at least one limiting block is connected with the object stage 3323 in a sliding manner in two opposite limiting blocks of the three limiting blocks. A movable limiting block is arranged at the fourth edge of the object stage 3323, and the movement of the limiting block at the fourth edge can realize the movement and the clamping of the mobile phone through an elastic mechanism, but when the elasticity is high, the mobile phone is easily injured, and therefore, preferably, the movement of the limiting block is realized through a transmission mechanism. Preferably, a cylinder transmission mechanism is adopted, and the limiting block is connected with a piston of the cylinder transmission mechanism.

Further, as shown in fig. 4, the first image capturing device 331 is connected to the top plate through a fixing frame 333, and the fixing frame 333 is rotatable with respect to the top plate.

During testing, the test head 100 needs to be moved to the object stage 332, and therefore the first image capturing device 331 needs to be disposed above the test head 100, so that the first image capturing device 331 is far away from the object stage 3323, which increases the height of the test system, and most importantly, brings difficulty to focusing, and makes it difficult to obtain a clear image. Therefore, the fixing frame 333 can rotate relative to the top plate, when the first image capturing device 331 is rotated to a non-interference position during the screen-scribing, after the screen-scribing, the test head 100 is removed, and then the first image capturing device 331 is rotated back to the screen-scribing position to capture the first image information. The whole process of the screen-sliding test is automatically completed under the control of the control device 200.

Further, as shown in fig. 1, the test area 300 further includes: the camera test stand 320 includes: a holder and a pattern layout. The clamper is used for clamping a device to be tested, the clamper can be switched between 0 DEG and 180 DEG, and when the clamper is at 0 DEG, one surface of the device to be tested is parallel to the top plate. The pattern sample is arranged below the clamper.

The clamp holder is switched between 0 degree and 180 degrees, so that the test of the cameras on two sides of the mobile phone can be realized. The picture information of the image pattern taken by the camera is transmitted to the control device 200, and compared with the standard pattern, the result of the performance change of the camera after the electrostatic discharge is obtained. Meanwhile, after the holder drives the mobile phone to turn over, the picking tool 110 can also be picked to move and placed on the insulation test bench again for testing the performance of the opposite surface.

Further, as shown in fig. 1, the esd testing system further includes a table 400, disposed on the top board, and having a plurality of devices to be tested, where each device to be tested accommodates one device to be tested.

After the mobile phone is installed and tested, the mobile phone can be automatically placed on the platform to be tested 400 under the control of the control system of the production line after the operation is switched from the previous operation to the electrostatic discharge test operation, and a plurality of mobile phones can be placed at the same time.

Further, the electrostatic discharge test system further comprises a gun head library 500, which is arranged on the top plate and is provided with at least one gun head position.

After the gun head is placed on the gun head position, the control device 200 controls the test head 100 to move to the gun head library 500, controls the electrostatic gun to align to the gun head position, and automatically installs the gun head. In general, the electrostatic gun has both a contact tip and a non-contact tip, and therefore, it is preferable that the tip magazine 500 has two tip positions in which the contact tip and the non-contact tip are placed, respectively.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

It will be understood that the utility model is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims (10)

1. An electrostatic discharge test system, comprising:

the control equipment is arranged in a control cabinet, and the control cabinet is provided with a top plate;

a test head driven by the control device to move in six degrees of freedom, comprising: a picking tool, an electrostatic gun and an operating tool assembly secured to a support, the support being connected to the control device;

a test zone comprising:

the insulation test bench comprises an insulation support, the insulation support is placed on the ground, a metal plate is arranged on the upper surface of the insulation support, and the metal plate is electrically connected with the ground;

the screen scribing test bench is arranged on the upper surface of the top plate and comprises an object placing bench and first image acquisition equipment, the object placing bench is arranged below the first image acquisition equipment, first image information of tested equipment is collected through the first image acquisition equipment, and the collected first image information is transmitted to the control equipment.

2. The electrostatic discharge test system of claim 1,

the operating tool assembly includes an operator, a fingerprinter, and an electrostatic brush.

3. The electrostatic discharge test system of claim 2,

the picking tool, the manipulator, the fingerprint device and the electrostatic brush are respectively connected with the bracket through a telescopic mechanism.

4. The electrostatic discharge test system of claim 3,

the telescopic mechanism is a cylinder transmission mechanism, a cylinder of the cylinder transmission mechanism is fixed on the support, and the picking tool, the manipulator, the fingerprint device and the electrostatic brush are respectively connected with a piston of each cylinder transmission mechanism.

5. The electrostatic discharge test system of claim 4, wherein the test head further comprises:

and the second image acquisition equipment is fixed on the bracket and used for acquiring second image information of the test head and transmitting the second image information to the control equipment.

6. The electrostatic discharge test system of claim 1,

the object placing table comprises a base, the base can move along a first direction, and a clamping device is arranged on the base.

7. The electrostatic discharge test system of claim 6,

the first image acquisition equipment is connected with the top plate through a fixing frame, and the fixing frame can rotate relative to the top plate.

8. The electrostatic discharge test system of claim 1, wherein the test zone further comprises:

camera testboard includes:

a gripper for gripping a device under test, the gripper being switchable between 0 ° and 180 °, one surface of the device under test being parallel to the top plate when the gripper is at 0 °;

and the pattern sample is arranged below the clamp holder.

9. The electrostatic discharge test system of claim 1, further comprising:

and the test platform is arranged on the top plate and provided with a plurality of devices to be tested, and each device to be tested contains one device to be tested.

10. The electrostatic discharge test system of claim 1, further comprising:

and the gun head warehouse is arranged on the top plate and is provided with at least one gun head position.

Images