Fingerprint testing device under smartphone screen

Abstract

The utility model discloses a smartphone under-screen fingerprint testing device which comprises a machine table and a controller, the machine table is provided with a material conveying assembly and a fingerprint testing mechanism which are respectively connected with the controller, the material conveying assembly is provided with a product clamp, the product clamp is used for placing a to-be-tested mobile phone, and the fingerprint testing mechanism is provided with a fingerprint testing mechanism. The material conveying assembly can drive the product clamp to move to the corresponding position of the fingerprint testing mechanism. The fingerprint testing mechanism comprises a testing fixing plate, a testing driving assembly is arranged on the testing fixing plate, a plurality of fingerprint testing heads are arranged at the output end of the testing driving assembly, and the testing driving assembly can drive the fingerprint testing heads to be connected with the mobile phones on the product clamps respectively. According to the utility model, the automatic test process of fingerprints under the mobile phone screen can be realized, the test efficiency is improved, and the labor cost is reduced; and the pressing force can be accurately controlled by using the equipment for testing, so that the consistency and the accuracy of testing are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic machine testing equipment, and in particular to a fingerprint testing device under the screen of a smart phone. Background Art

[0002] Before smartphones leave the factory, they need to be tested for various functions, including the function of the fingerprint sensor under the screen, the distance sensor, etc. At present, the function test of the fingerprint sensor under the screen is usually done manually. During the test, the phone needs to be manually placed under the fingerprint detection module, and then the detection force needs to be manually adjusted by pressing down, and the position of the three detection modules needs to be manually rotated. However, it is difficult to accurately control the pressure force during manual operation, and it is easy to cause inaccurate test results due to incorrect pressure force. In addition, there are many actions during the test, and the test efficiency of manual operation is low, and the labor cost is high. Utility Model Content

[0003] In order to solve some or all of the problems existing in the above-mentioned prior art, the utility model provides a fingerprint testing device under the screen of a smart phone, including a machine and a controller, the machine is provided with a material transport component and a fingerprint testing mechanism respectively connected to the controller, the material transport component is provided with a product fixture, the product fixture is used to place the mobile phone to be tested, the material transport component can drive the product fixture to move to the corresponding position of the fingerprint testing mechanism; the fingerprint testing mechanism includes a test fixing plate, the test fixing plate is provided with a test drive component, the output end of the test drive component is provided with a plurality of fingerprint test heads, and the test drive component can drive the fingerprint test heads to connect with the mobile phones on the product fixture respectively.

[0004] As a further improvement of the present invention, the test drive assembly includes a lifting drive assembly, the lifting drive assembly is connected to the test fixing plate, a test mounting plate is provided on the output end of the lifting drive assembly, a rotation drive assembly is provided on the test mounting plate, a test head mounting plate is provided on the output end of the rotation drive assembly, and the fingerprint test heads are respectively connected to the test head mounting plates.

[0005] As a further improvement of the present invention, there are three fingerprint test heads, and the three fingerprint test heads are distributed on the test head mounting plate at equal intervals in a circle.

[0006] As a further improvement of the present invention, the lifting drive assembly includes a test lifting cylinder, the test lifting cylinder is connected to the test fixing plate, and the test mounting plate is connected to the output end of the test lifting cylinder.

[0007] As a further improvement of the present invention, a plurality of lifting guide sleeves are provided on the test mounting plate, and a lifting guide rod is provided at a position on the machine platform corresponding to the lifting guide sleeve, the lifting guide rod passes through the corresponding lifting guide sleeve, and the lifting guide rod is slidably connected with the corresponding lifting guide sleeve.

[0008] As a further improvement of the present invention, the rotation drive assembly includes a rotation motor, which is connected to the test mounting plate. A rotatable drive shaft is provided on the test mounting plate, which is connected to the test head mounting plate, and the drive shaft is connected to the output end of the rotation motor.

[0009] As a further improvement of the present invention, a counterweight block is provided at one end of the test mounting plate close to the product fixture, and the counterweight block is arranged above the fingerprint test head to provide compensating downward pressure to the corresponding fingerprint test head.

[0010] As a further improvement of the present invention, the material transport component includes a material transport cylinder, the material transport cylinder is connected to the machine platform, the output end of the material transport cylinder is provided with a material transport slider, and the product fixture is connected to the material transport slider.

[0011] As a further improvement of the utility model, the product fixture is provided with a negative pressure suction cup and an incoming material sensor. The negative pressure suction cup is externally connected to a negative pressure device for adsorbing the mobile phone to be tested. The incoming material sensor is connected to the controller for detecting whether there is a mobile phone on the product fixture.

[0012] As a further improvement of the utility model, the product fixture is provided with an unplugging cylinder, the output end of the unplugging cylinder is provided with a unplugging plug, the unplugging plug is connected to the controller, and the unplugging cylinder can drive the unplugging plug to connect with the mobile phone on the product fixture.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model can realize the automatic testing process of the fingerprint under the mobile phone screen, without manually pressing down the test head multiple times, thus improving the testing efficiency and reducing the labor cost; and the use of the equipment for testing can accurately control the pressing force, thereby ensuring the consistency and accuracy of the test. During the specific test, the operator places the mobile phone to be tested on the product fixture, and then controls the material transport component to drive the product fixture with the mobile phone to the corresponding position of the fingerprint testing mechanism; then controls the test drive component to drive each fingerprint test head to connect with the mobile phone on the product fixture respectively, so as to test the fingerprint function under the screen of the mobile phone on the product fixture; after the test is completed, the material transport component is controlled to drive the product fixture with the mobile phone to reset to the initial position, and the operator can take out the tested mobile phone from the product fixture to complete a test process; then a new mobile phone is placed on the product fixture, thereby realizing the operation process of continuous testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0017] Figure 2 It is a structural schematic diagram of a material transport component and a product fixture in an embodiment of the utility model;

[0018] Figure 3 It is a structural schematic diagram of a fingerprint testing mechanism in an embodiment of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the fingerprint testing mechanism from another perspective in the embodiment of the utility model. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by technicians in the technical field of the present invention; the terms used in the specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order.

[0021] Reference to "embodiments" in the present invention means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive, independent, or alternative to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present invention may be combined with other embodiments.

[0022] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0023] like Figure 1-4 As shown, a fingerprint test device under the screen of a smart phone includes a machine 1 and a controller 2. The machine 1 is provided with two test stations, so that the fingerprint test device under the screen of a smart phone can test two mobile phones at the same time, thereby improving the test efficiency. The test station includes a material transport component 3 and a fingerprint test mechanism 4 respectively connected to the controller 2. The material transport component 3 is provided with a product fixture 5, and the product fixture 5 is used to place the mobile phone to be tested. The product fixture 5 is provided with a plug-in component, and the plug-in component is provided with a plug-out plug 51, which is connected to the controller 2. The plug-in component is used to drive the plug-in plug 51 to plug into the mobile phone to be tested on the product fixture 5, and the material transport component 3 is used to drive the mobile phone to be tested on the product fixture 5 to align with the fingerprint test mechanism 4.

[0024] During the specific operation, the operator places the mobile phone to be tested on the product fixture 5, and then controls the plug-in assembly to drive the plug-out plug 51 to work, so that the plug-in plug 51 is inserted into the mobile phone to be tested, so that the mobile phone is connected to the controller 2, so that the controller 2 can send a test signal to the mobile phone; then the material transport assembly 3 is controlled to drive the product fixture 5 to move the mobile phone to the corresponding position of the fingerprint testing mechanism 4, and then the fingerprint testing mechanism 4 is controlled to test the fingerprint function under the screen of the mobile phone; after the test is completed, the material transport assembly 3 is controlled to reset, and the product fixture 5 and the mobile phone are driven to the initial position, and the operator takes out the tested mobile phone from the product fixture 5 to complete the test process of a mobile phone. After that, a new mobile phone to be tested is placed on the product fixture 5, so as to realize the operation process of continuous testing.

[0025] The under-screen fingerprint testing device for smartphones can automatically test the under-screen fingerprint function of the mobile phone, greatly improving the efficiency of the test; the test process is completed by the cooperation of the material transport component 3 and the fingerprint testing mechanism 4, which can ensure the uniformity of each test action and improve the accuracy of the test data; using equipment instead of manual operation can also reduce the labor costs of the enterprise.

[0026] The controller 2 includes a plurality of control buttons 21 installed on the machine 1. The control buttons 21 can be used to control various mechanism components on the device to perform corresponding actions, including start, reset and emergency stop buttons.

[0027] The machine 1 is equipped with a level meter 6, which is used to detect the horizontal state of the product fixture 5 on the device; before the test, the operator can adjust the product fixture 5 on the device to a horizontal state by observing the level meter 6, and then conduct the test. In the subsequent test process, the controller 2 can calibrate the horizontal sensor in the mobile phone, thereby improving the functionality of the fingerprint test device under the smart phone screen.

[0028] A protective grating 7 is provided at the loading position of the machine 1 and the product fixture 5. The protective grating 7 is electrically connected to the controller 2 and is symmetrically arranged on both sides of the material transport component 3. During the test, if someone accidentally puts his body into the test position, the protective grating 7 will be cut off; then the protective grating 7 will first feedback a signal to the controller 2, and the controller 2 will immediately control the device to stop working. By setting the protective grating 7, it is possible to prevent the operator from accidentally putting his body into the device and causing damage, thereby improving the safety of the device.

[0029] like Figure 2 As shown, the material transport component 3 includes a material transport cylinder 31, which is fixedly mounted on the machine 1. The output end of the material transport cylinder 31 is provided with a material transport slider 32, and the product fixture 5 is fixedly connected to the material transport slider 32. When working, the mobile phone is installed on the product fixture 5, and the material transport cylinder 31 is controlled to drive the material transport slider 32 to slide, thereby driving the product fixture 5 and the mobile phone to move to the corresponding position of the fingerprint testing mechanism 4, so as to test the fingerprint function under the screen of the mobile phone. In other embodiments, the material transport cylinder 31 can also be replaced by a motor screw structure or other devices that drive the product fixture 5 to move linearly.

[0030] Buffers 33 are provided at both ends of the transport cylinder 31, and the transport slider 32 can abut against the buffers 33 respectively. In the initial state, the transport slider 32 abuts against the buffer 33 on one side; during operation, when the transport cylinder 31 drives the transport slider 32 to move to the limit position, the transport slider 32 will abut against the buffer 33 on the other side. At this time, the transport slider 32 also drives the product fixture 5 and the mobile phone to move to the corresponding position of the fingerprint testing mechanism 4. The drive stroke of the transport cylinder 31 can be limited by the buffer 33, which improves the accuracy of the drive and ensures the stability of the equipment operation.

[0031] The plug-in and unplug assembly includes a plug-in cylinder 52, which is connected to the controller 2, the plug-in and unplug cylinder 52 is connected to the product fixture 5, and the plug-out plug 51 is connected to the output end of the plug-in and unplug cylinder 52. In the initial state, the plug-in and unplug cylinder 52 is in an extended state; when the operator places the mobile phone on the product fixture 5, the controller 2 controls the plug-in and unplug cylinder 52 to retract, and drives the plug-out plug 51 to move toward the mobile phone on the product fixture 5 until the plug-out plug 51 is inserted into the connector on the mobile phone, so that the mobile phone is electrically connected to the controller 2; so that in the subsequent test process, the test signal is sent to the mobile phone through the controller 2. After the test is completed, the plug-in and unplug cylinder 52 is controlled to extend again, and the plug-out plug 51 is driven to move away from the mobile phone on the product fixture 5 until the plug-out plug 51 is unplugged from the mobile phone; so that the operator can take out the tested mobile phone from the product fixture 5.

[0032] The product fixture 5 is provided with a negative pressure suction cup 53 and an incoming material sensor 54. The negative pressure suction cup 53 is connected to an external negative pressure device to absorb the mobile phone to be tested. The incoming material sensor 54 is connected to the controller 2 to detect whether there is a mobile phone on the product fixture 5. Specifically, during the test, when the operator places the mobile phone on the product fixture 5, the incoming material sensor 54 will detect the mobile phone; when the incoming material sensor 54 detects the mobile phone, it will feedback a signal to the controller 2, and the controller 2 will immediately control the external negative pressure device to work, so that the negative pressure suction cup 53 generates negative pressure suction to absorb the mobile phone, so that the mobile phone is stably installed on the product fixture 5. By setting the incoming material sensor 54 and the negative pressure suction cup 53, it can ensure that the mobile phone is installed firmly on the product fixture 5, avoid the displacement of the mobile phone during the test, improve the stability of the test, and ensure the accuracy of the test results.

[0033] like Figure 3 , 4 As shown, the fingerprint testing mechanism 4 includes a test fixing plate 41, on which a test driving component is provided, and on the output end of the test driving component, a plurality of fingerprint testing heads 42 are provided, and the test driving component can drive the fingerprint testing heads 42 to connect with the mobile phones on the product fixture 5 respectively. When the material transport cylinder 31 drives the product fixture 5 and the mobile phone to move to the corresponding positions of the fingerprint testing mechanism 4, the test driving component is controlled to work, and each fingerprint testing head 42 is driven to connect with the mobile phone on the product fixture 5 respectively, so as to test the fingerprint function under the screen of the mobile phone on the product fixture 5.

[0034] The test drive assembly includes a lifting drive assembly, which is connected to the test fixing plate 41. A test mounting plate 43 is provided on the output end of the lifting drive assembly, and a rotating drive assembly is provided on the test mounting plate 43. A test head mounting plate 44 is provided on the output end of the rotating drive assembly, and a fingerprint test head 42 is fixedly mounted on the test head mounting plate 44. The rotating drive assembly can drive each fingerprint test head 42 to align with the product fixture 5 respectively, and the lifting drive assembly can drive the fingerprint test head 42 to connect with the mobile phone on the product fixture 5. In the initial state, one of the fingerprint test heads 42 is aligned with the product fixture 5; during the test, the lifting drive assembly is controlled to drive the test mounting plate 43, the rotating drive assembly, the test head mounting plate 44 and the fingerprint test head 42 to descend until the fingerprint test head 42 is connected with the mobile phone on the product fixture 5, and the controller 2 can be used to know whether the fingerprint function of the mobile phone in the current state is normal. After the test of the current fingerprint test head 42 is completed, the lifting drive component is controlled to reset, drive the test head mounting plate 44 and the fingerprint test head 42 to rise, so that the fingerprint test head 42 is separated from the mobile phone, and then the rotation drive component is controlled to drive the test head mounting plate 44 to rotate until the next fingerprint test head 42 is aligned with the product fixture 5, and then the descending drive component is controlled to drive the test head mounting plate 44 and the fingerprint test head 42 to descend until the fingerprint test head 42 is connected to the mobile phone on the product fixture 5, and the controller 2 can be used to know whether the fingerprint function of the mobile phone is normal in the current state; repeat the above process until all the fingerprint test heads 42 are connected to the mobile phones respectively, and the controller 2 can be used to calibrate the under-screen fingerprint function of the previous mobile phone on the product fixture 5, and determine whether the under-screen fingerprint function of the mobile phone is normal.

[0035] In this embodiment, there are three fingerprint test heads 42, and the three fingerprint test heads 42 are circumferentially and evenly spaced on the test head mounting plate 44, that is, the three fingerprint test heads 42 are spaced 120° apart. When working, the rotation drive assembly works once, and then drives the test head mounting plate 44 to rotate 120°.

[0036] In this embodiment, the three fingerprint test heads 42 are a flesh-colored flat test head, a black flat test head, and a 3D stripe test head. In other embodiments, the fingerprint test head 42 may also be of other types, as long as the fingerprint under the screen of the mobile phone can be recognized.

[0037] Specifically, the lifting drive assembly includes a test lifting cylinder 45, which is connected to the test fixing plate 41, and the test mounting plate 43 is connected to the output end of the test lifting cylinder 45. When working, by controlling the test lifting cylinder 45 to work, the test mounting plate 43, the rotation driving assembly, the test head mounting plate 44 and the fingerprint test head 42 can be driven to move up and down, so that the fingerprint test head 42 can be connected or separated from the mobile phone on the product fixture 5.

[0038] In order to limit and guide the lifting direction of the test installation plate 43, two lifting guide sleeves 46 are provided on the test installation plate 43, and a lifting guide rod 47 is provided at a position corresponding to the lifting guide sleeve 46 on the machine 1. The lifting guide rod 47 passes through the corresponding lifting guide sleeve 46, and the lifting guide rod 47 is slidably connected with the corresponding lifting guide sleeve 46. When the test lifting cylinder 45 is working, it drives the test installation plate 43 to move up and down, and the lifting guide sleeve 46 will slide on the lifting guide rod 47; the movement direction of the test installation plate 43 can be limited and guided by the cooperation of the lifting guide rod 47 and the lifting guide sleeve 46, so as to ensure that the fingerprint test head 42 can be pressed down onto the mobile phone on the product fixture 5, thereby improving the accuracy and stability of the transmission.

[0039] In other embodiments, the number of the lifting guide sleeves 46 may be any other number, as long as each lifting guide sleeve 46 is ensured to be slidably sleeved with the corresponding lifting guide rod 47 .

[0040] The rotary drive assembly includes a rotary motor 48, which is connected to the test mounting plate 43. The test mounting plate 43 is provided with a rotatable drive shaft 49, which is connected to the test head mounting plate 44, and the drive shaft 49 is connected to the output end of the rotary motor 48. When working, when the test of the first fingerprint test head 42 is completed, and the test lifting cylinder 45 drives the fingerprint test head 42 to rise and separate from the mobile phone, the rotary motor 48 is controlled to work, drive the drive shaft 49 to rotate, and then drive the test head mounting plate 44 to rotate 120°, so that the next fingerprint test head 42 is aligned with the mobile phone on the product fixture 5, and then the test lifting cylinder 45 is controlled to work, and the next fingerprint test head 42 is driven to descend to connect with the mobile phone on the product fixture 5.

[0041] In this embodiment, the rotary motor 48 is fixedly mounted on the test mounting plate 43, a driving wheel is provided on the output end of the rotary motor 48, a driven wheel 410 is sleeved on the driving shaft 49, and a transmission belt 411 is sleeved on the driving wheel and the driven wheel 410. When working, the rotary motor 48 is controlled to work, the driving wheel is driven to rotate, the transmission belt 411 is driven to move, and the transmission belt 411 drives the driven wheel 410 and the driving shaft 49 to rotate, thereby achieving the purpose of driving the test head mounting plate 44 to rotate. In other embodiments, a gear structure or other structure can also be used instead of a pulley structure, as long as the rotary motor 48 can drive the driving shaft 49 to rotate.

[0042] In order to improve the stability of the fingerprint test, a counterweight 412 is provided at one end of the test mounting plate 43 close to the product fixture 5. The counterweight 412 is arranged above the fingerprint test head 42 to provide compensatory downward pressure to the corresponding fingerprint test head 42. During operation, when the test lifting cylinder 45 drives the test mounting plate 43, the test head mounting plate 44 and the fingerprint test head 42 to descend, the counterweight 412 descends synchronously with the test mounting plate 43. When the fingerprint test head 42 is connected to the mobile phone, the reaction force of the mobile phone may push the test head mounting plate 44 upward. The counterweight 412 will press the test head mounting plate 44 under the action of its own gravity to prevent the fingerprint test head 42 from tilting upward, thereby ensuring that the fingerprint test head 42 can be pressed on the mobile phone as a whole, thereby improving the stability and accuracy of the fingerprint test.

[0043] Working principle:

[0044] In the initial state, the product fixture 5 is located at a position on the machine 1 corresponding to the protective grating 7; the operator installs the mobile phone on the product fixture 5, and when the incoming material sensor 54 detects the mobile phone, it feeds back a signal to the controller 2, and the controller 2 immediately controls the external negative pressure device to work, so that the negative pressure suction cup 53 generates negative pressure suction to absorb the mobile phone; then the plug-in and unplug cylinder 52 is controlled to work, driving the plug-out plug 51 to move toward the mobile phone on the product fixture 5, until the plug-in plug 51 is inserted into the connector on the mobile phone, so that the mobile phone is electrically connected to the controller 2. Then the material transport cylinder 31 is controlled to work, driving the material transport slider 32 to drive the mobile phone to move, until the material transport slider 32 abuts against the buffer 33 on the other side, at which time the material transport slider 32 moves the product fixture 5 and the mobile phone to the test position of the fingerprint testing mechanism 4.

[0045] Then, the test lifting cylinder 45 is controlled to work, driving the test mounting plate 43, the rotation drive assembly, the test head mounting plate 44 and the fingerprint test head 42 to descend until the fingerprint test head 42 is connected to the mobile phone on the product fixture 5. The controller 2 can be used to test whether the fingerprint function under the mobile phone screen is normal in the current state. After the current test is completed, the test lifting cylinder 45 is controlled to reset, and the test head mounting plate 44 and the fingerprint test head 42 are driven to rise, so that the fingerprint test head 42 is separated from the mobile phone; then the rotating motor 48 is controlled to work, and the test head mounting plate 44 is driven to rotate 120°, so that the next fingerprint test head 42 is aligned with the mobile phone on the product fixture 5, and then the test lifting cylinder 45 is controlled to work, and the test head mounting plate 44 and the fingerprint test head 42 are driven to descend until the fingerprint test head 42 is connected to the mobile phone on the product fixture 5, and the controller 2 can be used to know whether the fingerprint function of the mobile phone is normal in the current state; repeat the above process until all the fingerprint test heads 42 are connected to the mobile phones respectively, and the controller 2 can be used to calibrate the under-screen fingerprint function of the previous mobile phone on the product fixture 5, and determine whether the under-screen fingerprint function of the mobile phone is normal.

[0046] After the test is completed, the transport cylinder 31 is controlled to reset, and the transport slider 32 is driven to drive the mobile phone to move until the transport slider 32 abuts against the buffer 33 in the initial state; then the plug-in and unplug cylinder 52 is controlled to reset, and the unplug plug 51 is driven to move away from the mobile phone on the product fixture 5 until the unplug plug 51 is unplugged from the mobile phone, and then the operator takes out the tested mobile phone from the product fixture 5.

[0047] The above-mentioned specific implementation mode is a preferred implementation mode of the present utility model, and is not intended to limit the specific implementation scope of the present utility model. The scope of the present utility model includes but is not limited to the specific implementation mode. All equivalent changes made in accordance with the present utility model are within the protection scope of the present utility model.

Claims

1. A fingerprint testing device for a smartphone under the screen, characterized in that: It includes a machine and a controller, wherein the machine is provided with a material transport component and a fingerprint testing mechanism respectively connected to the controller, the material transport component is provided with a product fixture, the product fixture is used to place the mobile phone to be tested, and the material transport component can drive the product fixture to move to the corresponding position of the fingerprint testing mechanism; The fingerprint testing mechanism comprises a test fixing plate, on which a test driving component is arranged, and on the output end of the test driving component are arranged a plurality of fingerprint testing heads, and the test driving component can drive the fingerprint testing heads to connect with the mobile phones on the product fixture respectively.

2. The fingerprint test device under the smart phone screen according to claim 1, characterized in that: The test drive assembly includes a lifting drive assembly, the lifting drive assembly is connected to the test fixing plate, a test mounting plate is provided on the output end of the lifting drive assembly, a rotation drive assembly is provided on the test mounting plate, a test head mounting plate is provided on the output end of the rotation drive assembly, and the fingerprint test heads are respectively connected to the test head mounting plates.

3. The fingerprint test device under the smart phone screen according to claim 2, characterized in that: There are three fingerprint test heads, and the three fingerprint test heads are distributed on the test head mounting plate at equal intervals in a circle.

4. The fingerprint test device under the smart phone screen according to claim 2, characterized in that: The lifting drive assembly comprises a test lifting cylinder, the test lifting cylinder is connected to the test fixing plate, and the test mounting plate is connected to the output end of the test lifting cylinder.

5. The fingerprint test device under the smart phone screen according to claim 4, characterized in that: The test mounting plate is provided with a plurality of lifting guide sleeves, and the platform is provided with lifting guide rods at positions corresponding to the lifting guide sleeves. The lifting guide rods pass through the corresponding lifting guide sleeves, and the lifting guide rods are slidably connected with the corresponding lifting guide sleeves.

6. The fingerprint test device under the smart phone screen according to claim 2, characterized in that: The rotary drive assembly includes a rotary motor connected to the test mounting plate. A rotatable drive shaft is disposed on the test mounting plate. The drive shaft is connected to the test head mounting plate and is connected to an output end of the rotary motor.

7. The fingerprint testing device under the smart phone screen according to claim 2, characterized in that: A counterweight block is provided at one end of the test mounting plate close to the product fixture. The counterweight block is arranged above the fingerprint test head and is used to provide a compensating downward force to the corresponding fingerprint test head.

8. The smartphone under-screen fingerprint testing device according to any one of claims 1 to 7, characterized in that: The material transport component includes a material transport cylinder, which is connected to the machine platform. The output end of the material transport cylinder is provided with a material transport slider, and the product fixture is connected to the material transport slider.

9. The fingerprint test device under the smart phone screen according to claim 8, characterized in that: The product fixture is provided with a negative pressure suction cup and an incoming material sensor. The negative pressure suction cup is externally connected to a negative pressure device for adsorbing the mobile phone to be tested. The incoming material sensor is connected to the controller for detecting whether there is a mobile phone on the product fixture.

10. The fingerprint test device under the smart phone screen according to claim 8, characterized in that: The product fixture is provided with a plug-in and pull-out cylinder, and an output end of the plug-in and pull-out cylinder is provided with a plug-in plug, the plug-in plug is connected to the controller, and the plug-in and pull-out cylinder can drive the plug-in plug to be connected with the mobile phone on the product fixture.

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