Test equipment

Abstract

The application discloses a kind of test equipment, test equipment includes: rack, for positioning the positioning mechanism of piece to be measured, mobile module and at least two groups of test components, the top of rack has drop opening, positioning mechanism is located in rack, positioning mechanism is suitable for defining the placement area for horizontally placing piece to be measured in it, placement area is located in the downside of drop opening and opposite and communicate with drop opening, piece to be measured is suitable for being placed in placement area by the upside of drop opening and being positioned on positioning mechanism;At least two groups of mobile module are located in rack and are located in the upside and downside of placement area, test component is respectively one-to-one corresponding and is located in two groups of mobile module, each group of mobile module is used to drive corresponding test component to move along horizontal direction, and each test component includes at least one test module, and at least two groups of test components respectively detect the upside and downside of piece to be measured respectively.Detection point of the upside and downside of piece to be measured can be detected simultaneously according to the test equipment of the application, and detection efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printed circuit board testing, and in particular to a testing device. BACKGROUND

[0002] With the continuous progress of communication technology, the communication rate is getting higher and higher, and more and more users put forward the requirements of impedance control and signal frequency for PCB trace. Impedance testing usually includes single-ended impedance testing and differential impedance testing. In the related art, one side of the PCB is usually detected first, and the other side of the PCB needs to be flipped and detected again, so that the detection efficiency of the PCB is low. SUMMARY

[0003] The present application provides a testing device, which has the advantages of high detection efficiency.

[0004] The testing device according to the embodiment of the present application comprises: a rack, the top of the rack has a drop port; a positioning mechanism for positioning a to-be-tested piece, the positioning mechanism is arranged on the rack, and the positioning mechanism is adapted to define a placement area for horizontally placing the to-be-tested piece, the placement area is located on the lower side of the drop port and opposite to and in communication with the drop port; a moving module, at least two groups of the moving module are arranged on the rack and located on the upper and lower sides of the placement area; at least two groups of testing assemblies, two groups of the testing assemblies are respectively and one-to-one arranged on two groups of the moving module, each group of the moving module is used for driving the corresponding testing assembly to move in the horizontal direction, and each testing assembly comprises at least one testing module, and the two groups of testing assemblies are respectively used for detecting the upper and lower surfaces of the to-be-tested piece.

[0005] The testing device according to the embodiment of the present application, two groups of moving modules are arranged on the rack and located on the upper and lower sides of the placement area, two groups of testing assemblies are respectively arranged on two groups of the moving module, each group of the moving module is used for driving the corresponding testing assembly to move in the horizontal direction, each testing assembly comprises at least one testing module, and the two groups of testing assemblies are respectively used for detecting the upper and lower surfaces of the to-be-tested piece, so that the testing assembly can go to different detection points for detection work, and the testing assemblies located on the upper and lower sides of the placement area can simultaneously detect the detection points on the upper and lower surfaces of the to-be-tested piece, thereby improving the detection efficiency and detection accuracy of the to-be-tested piece.

[0006] According to some embodiments of the present application, the rack comprises a base, a support arranged on the base, the upper-side moving module is arranged on the upper surface of the support, the upper-side test assembly is arranged on the upper-side moving module, a containing space is defined between the support and the base, the lower-side moving module is arranged on the base and in the containing space, the lower-side test assembly is arranged in the containing space and on the lower-side moving module, and the drop port is formed on the top of the support and is opposite to and communicates with the containing space in the vertical direction.

[0007] According to some embodiments of the present application, each of the moving modules comprises an X-direction translation mechanism, a support plate arranged on the X-direction translation mechanism, the X-direction translation mechanism being configured to drive the support plate to translate in the X direction, a Y-direction translation mechanism arranged on the support plate, the test assembly being arranged on the Y-direction translation mechanism, the Y-direction translation mechanism being configured to drive the test assembly to translate in the Y direction, and the Y-direction translation mechanism being driven to translate in the X direction by the X-direction translation mechanism when the X-direction translation mechanism drives the support plate to translate in the X direction, so as to drive the test assembly to translate in the X direction.

[0008] According to some embodiments of the present application, the X-direction translation mechanism is a linear motor or a screw feed mechanism, and / or the Y-direction translation mechanism is a linear motor or a screw feed mechanism.

[0009] According to some embodiments of the present application, each of the moving modules comprises two Y-direction translation mechanisms arranged opposite to and spaced apart from each other in the X direction, and each of the Y-direction translation mechanisms is arranged with the test assembly, each of the moving modules comprises one X-direction translation mechanism, each of the X-direction translation mechanisms is arranged with two support plates arranged opposite to and spaced apart from each other in the X direction, and each of the two Y-direction translation mechanisms of each of the moving modules is arranged on the two support plates.

[0010] According to some embodiments of the present application, each of the support plates is arranged with two first sliding rails arranged opposite to and spaced apart from each other in the X direction, the Y-direction translation mechanism is arranged between the two first sliding rails, the bottom surface of the test assembly is arranged with two first sliding blocks slidingly matched with the two first sliding rails, respectively, and / or the top of the rack is arranged with two second sliding rails, the two second sliding rails are arranged at opposite ends of the rack in the Y direction, and the bottom surface of each of the support plates is arranged with two second sliding blocks slidingly matched with the two second sliding rails, respectively.

[0011] According to some embodiments of the application, each of the test modules comprises a mounting frame, at least one test unit arranged on the mounting frame, the test unit comprising a test mechanism and a test driving mechanism arranged on the mounting frame, the test driving mechanism being connected to the test mechanism to drive the test mechanism away from or close to the object to be tested, the test mechanism being used for single-ended impedance or differential impedance test.

[0012] An image acquisition unit for acquiring the position of the detection point on the object to be tested, the image acquisition unit being arranged on the mounting frame.

[0013] According to some embodiments of the application, the test units are two and are arranged on opposite sides of the mounting frame, and the image acquisition unit is arranged on one side of the mounting frame and on the same side of the two test units.

[0014] According to some embodiments of the application, the test units are two, and the test mechanism of each of the test units comprises a probe assembly, the probe assembly comprising a first probe and a second probe electrically connected, the first probe being a signal probe, and the second probe being a ground probe or a signal probe, the types of the second probes of the test mechanisms of the two test units being the same or different.

[0015] According to some embodiments of the application, the positioning mechanism comprises a first clamp assembly comprising a first clamping mechanism and a first clamping adjustment mechanism, the first clamping mechanism extending along an X direction, and the first clamping adjustment mechanism being connected to the first clamping mechanism to adjust the opening degree of a first clamping opening of the first clamping mechanism; and a second clamp assembly comprising a second clamping mechanism and a second clamping adjustment mechanism, the second clamping mechanism extending along the X direction, the second clamping mechanism being arranged opposite to and spaced apart from the first clamping mechanism along a Y direction, and the second clamping adjustment mechanism being connected to the second clamping mechanism to adjust the opening degree of a second clamping opening of the second clamping mechanism, the second clamping opening and the first clamping opening facing each other in the Y direction; wherein at least one of the first clamping mechanism and the second clamping mechanism is translatable along the Y direction, and a first clamping translation mechanism for driving the first clamping mechanism or the second clamping mechanism to translate along the Y direction is a linear motor, a screw feeding mechanism or a belt driving mechanism.

[0016] According to some embodiments of the present application, the first clamping mechanism is fixed to the frame, the second clamping mechanism is translatable along the Y direction, and the first clamping translation mechanism for driving the second clamping mechanism to translate is a belt transmission mechanism, wherein the first clamping translation mechanism comprises a first belt transmission mechanism, a transmission rod and a second belt transmission mechanism, the first belt transmission mechanism and the second belt transmission mechanism are arranged at opposite ends of the frame along the X direction, the transmission rod is located at one side of the delivery opening along the Y direction, the transmission rod extends along the X direction, and the transmission rod is in transmission connection with the first belt transmission mechanism and the second belt transmission mechanism at two ends thereof, and the second clamping mechanism is connected to the first belt transmission mechanism and the second belt transmission mechanism at opposite ends thereof along the X direction.

[0017] According to some embodiments of the present application, the positioning mechanism further comprises a third clamp assembly comprising a third clamping mechanism and a third clamping adjustment mechanism connected to the third clamping mechanism to adjust the opening degree of a third clamping opening of the third clamping mechanism, and a fourth clamp assembly comprising a fourth clamping mechanism and a fourth clamping adjustment mechanism, the fourth clamping mechanism is arranged opposite to and spaced apart from the third clamping mechanism along the X direction, the fourth clamping adjustment mechanism is connected to the fourth clamping mechanism to adjust the opening degree of a fourth clamping opening of the fourth clamping mechanism, and the fourth clamping opening and the third clamping opening are directed towards each other along the X direction, wherein at least one of the third clamping mechanism and the fourth clamping mechanism is translatable along the X direction, and the second clamping translation mechanism for driving the third clamping mechanism or the fourth clamping mechanism to translate along the X direction is a linear motor, a lead screw feeding mechanism or a belt transmission mechanism.

[0018] According to some embodiments of the present application, the third clamping mechanism is fixed relative to the frame along the X direction, the fourth clamping mechanism is translatable along the X direction, and the second clamping translation mechanism for driving the fourth clamping mechanism to translate is a belt transmission mechanism, and the second clamping translation mechanism is arranged on the inner side wall of the frame.

[0019] According to some embodiments of the present application, the third clamping translation mechanism and the fourth clamping translation mechanism are arranged at opposite ends of the frame along the X direction, and the third clamping mechanism and the fourth clamping mechanism are both translatable along the Y direction.

[0020] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings in which:

[0022] Figure 1 is a schematic diagram of a test device according to an embodiment of the present application;

[0023] Figure 2 is a schematic diagram of a test device according to an embodiment of the present application;

[0024] Figure 3 is a schematic diagram of a test device according to an embodiment of the present application; Figure 2 is an enlarged view of area A in FIG. 5;

[0025] Figure 4 is a schematic diagram of a test device according to an embodiment of the present application;

[0026] Figure 5 is a side view of a test device according to an embodiment of the present application;

[0027] Figure 6 is a schematic diagram of a test device according to an embodiment of the present application;

[0028] Figure 7 is a schematic diagram of a test device according to an embodiment of the present application;

[0029] Figure 8 is a top view of a test device according to an embodiment of the present application;

[0030] Figure 9 is a schematic diagram of a test device according to an embodiment of the present application.

[0031] Reference Signs:

[0032] test device 100;

[0033] frame 1; drop opening 11; base 12; support 13; containing space 14; second slide rail 15;

[0034] positioning mechanism 2; placement area 21;

[0035] first clamp assembly 22; second clamp assembly 23; first clamping translation mechanism 24;

[0036] first belt drive mechanism 241; transmission rod 242; second belt drive mechanism 243; drive motor 244; third clamp assembly 25; fourth clamp assembly 26; second clamping translation mechanism 27;

[0037] Third clamping translation mechanism 28; fourth clamping translation mechanism 29; connecting plate 291;

[0038] Moving module 3;

[0039] X-direction translation mechanism 31; support plate 311; first slide rail 312; second slide block 313;

[0040] Linear motor stator 314; stop block 315; proximity switch 316; linear motor mover 317;

[0041] Y-direction translation mechanism 32; Y-direction motor 321; screw rod 322;

[0042] Test assembly 4; test module 40;

[0043] Mounting frame 41; first slide block 411;

[0044] Test unit 42; test mechanism 421; test driving mechanism 422; probe assembly 423;

[0045] Image acquisition unit 43;

[0046] Object to be tested 200. DETAILED DESCRIPTION

[0047] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein like reference numerals identify similar elements or features in the figures. The embodiments described below are merely exemplary and are not intended to limit the application, which is defined in the appended claims.

[0048] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For purposes of explanation and non- limitation, specific details of certain examples are described. One skilled in the art will understand that the application can be practiced with different and / or alternative examples, and equivalents. The application is not limited to the examples described below, but rather, the objective is to put forth the broadest interpretation of the present application to encompass all such alternatives, modifications and equivalents. Additionally, the various embodiments of the application can be used alone or in combination with each other.

[0049] A test apparatus 100 according to an embodiment of the present application is described below with reference to the attached drawings.

[0050] Reference Figures 1-4The test device 100 according to the embodiment of the present application comprises a rack 1, a positioning mechanism 2, a moving module 3 and a test assembly 4. The rack 1 has a drop port 11 at the top, and the positioning mechanism 2 is used for positioning a test piece 200. The positioning mechanism 2 is arranged on the rack 1, and a placement area 21 for horizontally placing the test piece 200 is defined in the positioning mechanism 2. The placement area 21 is located below and opposite to the drop port 11 and is in communication with the drop port 11. The test piece 200 is placed in the placement area 21 from above the drop port 11 and is positioned on the positioning mechanism 2.

[0051] Therefore, the test piece 200 has a larger operation space during picking and placing, so that the picking and placing speed of the test piece 200 can be improved, the detection efficiency of the test piece 200 is improved, and the test device 100 is especially suitable for a robot outside the device to automatically pick and place materials. In addition, the risk of interference during picking and placing of the test piece 200 can be avoided, so as to ensure the safety of the test piece 200. Furthermore, the position of the test piece 200 is fixed by the positioning mechanism 2, so that the displacement of the test piece 200 during detection in the placement area 21 is not easy to deviate, so that the false detection or misjudgment caused by the deviation of the position of the test piece 200 can be avoided, and the detection accuracy of the test device 100 is improved.

[0052] Further, at least two groups of moving modules 3 are arranged on the rack 1 and are located on the upper and lower sides of the placement area 21. The test assembly 4 is provided in at least two groups, and each group of the test assembly 4 is correspondingly arranged on each group of the moving module 3. Each group of the moving module 3 is used for driving the corresponding test assembly 4 to move in the horizontal direction. Each test assembly 4 comprises at least one test module 40, and each group of the test assembly 4 is used for detecting the upper and lower surfaces of the test piece 200, respectively.

[0053] That is, at least one group of the test assembly 4 is located on the upper side of the placement area 21, so as to detect the detection points on the upper side of the test piece 200 by the test assembly 4 on the upper side. At least one group of the test assembly 4 is located on the lower side of the placement area 21, so as to detect the detection points on the lower side of the test piece 200 by the test assembly 4 on the lower side. Therefore, during detection of the test piece 200, the test assembly 4 on the upper and lower sides of the placement area 21 can simultaneously detect the detection points on the upper and lower sides of the test piece 200, so that the step of turning over the test piece 200 for detection can be omitted, and the detection efficiency of the test device 100 is improved.

[0054] In addition, the moving module 3 can better adjust the position of the corresponding test assembly 4 in the horizontal direction, so that the test assembly 4 can accurately go to the detection points for detection work. Furthermore, the position of the test assembly 4 can be continuously adjusted, so that the test assembly 4 can go to different detection points for detection work, and the detection efficiency and detection accuracy of the test piece 200 can be improved.

[0055] In one specific example, referring to Figure 1 and Figure 5 , the mobile module 3 and the test assembly 4 are both provided with two groups, one group of the mobile module 3 is located on the upper side of the placement area 21, and the other group of the mobile module 3 is located on the lower side of the placement area 21, and each of the two groups of the mobile module 3 is provided with a corresponding test assembly 4, that is, one group of the test assembly 4 is arranged on the mobile module 3 located on the upper side of the placement area 21, and the other group of the test assembly 4 is arranged on the mobile module 3 located on the lower side of the placement area 21, so that the test assembly 4 located on the upper side of the placement area 21 can detect the detection points on the upper surface of the test piece 200 in the placement area 21, and the test assembly 4 located on the lower side of the placement area 21 can detect the detection points on the lower surface of the test piece 200 in the placement area 21.

[0056] According to the test equipment 100 of the embodiment of the present application, the two groups of the mobile module 3 are arranged on the rack 1 and located on the upper and lower sides of the placement area 21, and the two groups of the test assembly 4 are arranged on the two groups of the mobile module 3, respectively, each of the mobile module 3 is used to drive the corresponding test assembly 4 to move in the horizontal direction, and each of the test assembly 4 includes at least one test module 40, and the two groups of the test assembly 4 respectively detect the upper and lower surfaces of the test piece 200, so that the test assembly 4 can go to different positions of the detection points to perform detection work, and the test assembly 4 located on the upper and lower sides of the placement area 21 can simultaneously detect the detection points on the upper and lower sides of the test piece 200, which is beneficial to improving the detection efficiency and the detection accuracy of the test piece 200.

[0057] According to some embodiments of the present application, the rack 1 includes a base 12 and a support 13. Specifically, the support 13 is arranged on the base 12, the mobile module 3 located on the upper side is arranged on the upper surface of the support 13, and the test assembly 4 located on the upper side is arranged on the upper surface of the mobile module 3 located on the upper side. Thus, the operation space of the mobile module 3 and the test assembly 4 located on the upper side during installation, disassembly or maintenance is large, which is beneficial to reducing the assembly and maintenance difficulty of the test equipment 100. In addition, the space for the mobile module 3 located on the upper side to drive the test assembly 4 to move is large, so that the flexibility of the position adjustment of the test assembly 4 can be ensured. In one specific example, part of the support 13 is made of marble, so that the flatness of the support 13 can be improved, which is beneficial to improving the detection accuracy of the test equipment 100.

[0058] Further, the support 13 and the base 12 define a containing space 14, the mobile module 3 located on the lower side is arranged on the base 12 and located in the containing space 14, the test assembly 4 located on the lower side is located in the containing space 14 and arranged on the upper surface of the mobile module 3 located on the lower side, and the drop port 11 is formed on the top of the support 13, and the drop port 11 and the containing space 14 are opposite and communicate in the up-down direction.

[0059] Thus, the installation, disassembly or maintenance of the mobile module 3 and the test assembly 4 located at the lower side can be performed through the feeding port 11, which is conducive to further reducing the assembly and maintenance difficulty of the test equipment 100. In addition, the test assembly 4 located at the lower side has a larger moving space in the accommodation space 14, so as to improve the position adjustment flexibility of the test assembly 4 located at the lower side. Specifically, the mobile module 3 located at the lower side can adjust the position of the test assembly 4 in the horizontal direction in the accommodation space 14, so that the test assembly 4 located at the lower side can flexibly adjust the position of the test assembly 4 located at the lower side according to the detection point position of the lower side of the test piece 200, so that the test assembly 4 can accurately move to the detection point position to complete the detection work.

[0060] According to some embodiments of the present application, referring to Figures 2-4 Each group of mobile modules 3 includes an X-direction translation mechanism 31 and a Y-direction translation mechanism 32. Specifically, the X-direction translation mechanism 31 is provided with a support plate 311, and the X-direction translation mechanism 31 is used to drive the support plate 311 to translate in the X-direction. The Y-direction translation mechanism 32 is arranged on the support plate 311, and the test assembly 4 is arranged on the Y-direction translation mechanism 32. The Y-direction translation mechanism 32 is used to drive the test assembly 4 to translate in the Y-direction. When the X-direction translation mechanism 31 drives the support plate 311 to translate in the X-direction, the Y-direction translation mechanism 32 is driven to translate in the X-direction, so as to drive the test assembly 4 to translate in the X-direction.

[0061] That is, the position of the test assembly 4 in the Y-direction can be adjusted by the Y-direction translation mechanism 32, and the position of the test assembly 4 in the X-direction can be adjusted by the X-direction translation mechanism 31. Thus, the position adjustment flexibility of the test assembly 4 is high in the plane formed by the straight line in the X-direction and the straight line in the Y-direction (i.e. in the horizontal direction), so that the test assembly 4 can go to different detection points for detection work through position adjustment, which is conducive to improving the detection performance of the test equipment 100 on the test piece 200. In addition, the distance between the test assembly 4 and the test piece 200 can remain unchanged during the translation of the test assembly 4 in the horizontal direction, so as to avoid friction damage between the test assembly 4 and the test piece 200 during the movement.

[0062] In one specific example, the rack 1 is further provided with proximity switches 316 of stop blocks 315, the stop blocks 315 are located on both sides of the support plate 311 along the X direction translation, and the stop blocks 315 are used to avoid the support plate 311 from moving too much. The proximity switches 316 are used to detect the position of the support plate 311, and the X direction translation mechanism 31 can be controlled to drive the support plate 311 to move through the signal of the proximity switches 316. For example, when the support plate 311 is about to reach the limit position, the X direction translation mechanism 31 is stopped through the signal of the proximity switches 316 to limit the movement range of the support plate 311. In addition, the support plate 311 is further provided with mechanical anti-collision and anti-collision sensing sheets to further prevent collision caused by excessive movement of the support plate 311.

[0063] Optionally, the X direction translation mechanism 31 is a linear motor or a screw feeding mechanism, and / or the Y direction translation mechanism 32 is a linear motor or a screw feeding mechanism. For example, the X direction translation mechanism 31 and the Y direction translation mechanism 32 can both be linear motors, or the X direction translation mechanism 31 and the Y direction translation mechanism 32 can both be screw feeding mechanisms, or one of the X direction translation mechanism 31 and the Y direction translation mechanism 32 is a linear motor and the other is a screw feeding mechanism, and so on, which will not be enumerated here. In this way, the stability of the X direction translation mechanism 31 and the Y direction translation mechanism can be better guaranteed to ensure the stability of the test assembly 4 during movement, so that the detection accuracy can be better guaranteed.

[0064] Optionally, each set of movement module 3 includes two Y direction translation mechanisms 32 that are relatively and spaced apart along the X direction, and each Y direction translation mechanism 32 is provided with a test module 40. Each set of movement module 3 includes an X direction translation mechanism 31, and the X direction translation mechanism 31 of each set of movement module 3 is provided with two support plates 311 that are relatively and spaced apart along the X direction. The two Y direction translation mechanisms of each set of movement module 3 are respectively arranged on the two support plates 311.

[0065] That is, each set of test assembly 4 includes two test modules 40, that is, two test modules 40 are arranged on the upper and lower sides of the placement area 21, so that the two test modules 40 on the same side of the placement area 21 can simultaneously detect two detection points on one side of the test piece 200, thereby improving the detection speed of the test piece 200 and making the detection efficiency of the test equipment 100 high.

[0066] Specifically, the positions of the two support plates 311 in the X direction can be adjusted by the X-direction translation mechanism 31, so as to drive the two Y-direction translation mechanisms 32 respectively located on the two support plates 311 to translate in the X direction, so as to finally drive the test module 40 respectively located on the two Y-direction translation mechanisms 32 to translate in the X direction, and the corresponding test module 40 can be driven by the two Y-direction translation mechanisms 32 to translate in the Y direction, so that the two test modules 40 located on the same side of the placement area 21 can be adjusted in the horizontal direction by the X-direction translation mechanism 31 and the Y-direction translation mechanism 32, so as to move to the same side of the detection point for detection work.

[0067] Further, each support plate 311 is provided with two first sliding rails 312 which are opposite and spaced apart in the X direction, the Y-direction translation mechanism 32 is arranged between the two first sliding rails 312, and the bottom surface of the test module 40 is provided with two first sliding blocks 411 which are respectively slidably connected with the two first sliding rails 312. That is, the support plate 311 and the test module 40 are slidably connected through the cooperation of the first sliding rail 312 and the first sliding block 411, and the test module 40 slides along the extension direction of the first sliding rail 312 on the first sliding rail 312 through the first sliding block 411, so that the test module 40 translates in the Y direction relative to the support plate 311, that is, the first sliding rail 312 extends in the Y direction.

[0068] Therefore, the first sliding rail 312 can better limit the sliding direction of the first sliding block 411, and further limit the translation direction of the test module 40 on the support plate 311, and the test module 40 and the support plate 311 can better improve the stability of the test module 40 in the Y direction through the cooperation of the two groups of first sliding blocks 411 and first sliding rails 312, so as to improve the detection performance of the test equipment 100.

[0069] In one specific example, referring to Figure 3 The Y-direction translation mechanism 32 is a screw feeding mechanism, which includes a Y-direction motor 321 and a screw rod 322, the output end of the Y-direction motor 321 is coaxially connected with the screw rod 322, the Y-direction motor 321 is arranged on the upper surface of the support plate 311 and located between the two first sliding rails 312, which can better save the assembly space of the Y-direction translation mechanism 32, and the screw rod 322 is rotatably connected with the bottom of the test module 40, so that the test module 40 translates in the Y direction along the axis direction of the screw rod 322 under the cooperation of the first sliding rail 312 and the second sliding block 313.

[0070] Optionally, referring to Figure 6The top of the rack 1 is provided with two second sliding rails 15 located at opposite ends of the rack 1 along the Y direction, and the bottom surface of each support plate 311 is provided with two second sliding blocks 313 respectively slidingly matched with the two second sliding rails 15. That is, the rack 1 and the support plate 311 are slidingly connected through the cooperation of the second sliding rails 15 and the second sliding blocks 313, and the second sliding blocks 313 slide along the extension direction of the second sliding rails 15 on the second sliding rails 15, so that the support plate 311 translates along the X direction relative to the rack 1, that is, the second sliding rails 15 extend along the X direction.

[0071] Therefore, the second sliding rail 15 can better limit the sliding direction of the second sliding block 313, and further limit the translation direction of the support plate 311 on the rack 1, and the support plate 311 and the rack 1 can better improve the stability of the support plate 311 translating along the X direction through the cooperation of the two groups of first sliding blocks 411 and first sliding rails 312, so as to improve the detection performance of the test equipment 100.

[0072] In one specific example, referring to Figures 4-6 The X-direction translation mechanism 31 is a linear motor, which includes a linear motor stator 314 arranged on the rack 1 and located between the two second sliding rails 15, and a linear motor mover 317 arranged on the bottom surface of the support plate 311. The linear motor stator 314 extends along the X direction, and the extension length is substantially the same as the length of the rack 1 in the X direction. Therefore, the linear motor mover 317 translates relative to the linear motor stator 314, and further drives the support plate 311 to translate along the X direction relative to the rack 1.

[0073] According to some embodiments of the present application, referring to Figure 2 and Figure 3 Each test module 40 includes a mounting frame 41, at least one test unit 42, and an image acquisition unit 43 for acquiring the position of the detection point on the test piece 200. Specifically, the test unit 42 is arranged on the mounting frame 41, and the test unit 42 includes a test mechanism 421 and a test driving mechanism 422 arranged on the mounting frame 41. The test driving mechanism 422 is connected to the test mechanism 421 to drive the test mechanism 421 away from or close to the test piece 200, and the test mechanism 421 is used for single-ended impedance or differential impedance test.

[0074] That is, the test driving mechanism 422 can drive the test mechanism 421 to move towards the direction close to the test piece 200 (such as the lower direction as shown in Figure 1 At this time, the test mechanism 421 is in a detection state, and after the detection is completed, the test driving mechanism 422 can drive the test mechanism 421 to move away from the test piece 200 (such as the upper direction as shown in Figure 1The upper side) moves, avoids the interference between the to-be-tested piece 200 and the test module 40, and facilitates the taking and placing of the to-be-tested piece 200, and at this time, the test mechanism 421 is in a standby state. In this way, the automation level of the test equipment 100 for detecting the to-be-tested piece 200 can be improved, and the safety is high. In addition, the position of the detection point can be better acquired by the image acquisition unit 43, so that the test unit 42 can accurately go to the detection point to perform the detection work, which is beneficial to improving the detection accuracy of the test equipment 100.

[0075] Optionally, the test unit 42 is two and is arranged on opposite sides of the mounting frame 41. In this way, the layout of the test module 40 as a whole is more symmetrical and reasonable. At the same time, the risk of interference between the two groups of test units 42 during movement and detection can be better avoided, so as to improve the stability of the test equipment 100.

[0076] In addition, the two groups of test units 42 can be respectively used for testing single-ended impedance and differential impedance, that is, one group of test units 42 is used for detecting the single-ended impedance of the to-be-tested piece 200, and the other group of test units 42 is used for detecting the differential impedance of the to-be-tested piece 200, so that the test module 40 can detect the single-ended impedance of the to-be-tested piece 200 and also can detect the differential impedance of the to-be-tested piece 200, which is beneficial to improving the detection efficiency of the test equipment 100.

[0077] In addition, the image acquisition unit 43 is arranged on one side of the mounting frame 41 and is located on the same side of the two test units 42. In this way, the test equipment 100 can accurately control the test unit 42 to go to the detection point to perform the detection work according to the position information acquired by the image acquisition unit 43, so as to improve the detection accuracy of the test equipment 100. In addition, the image acquisition unit 43 is not arranged on the same side as the two groups of test units 42, which can better avoid the mutual interference between the image acquisition unit 43 and the test units 42, so as to improve the reliability of the test equipment 100.

[0078] Optionally, the test unit 42 is two, and the test mechanism 421 of each test unit 42 includes a probe assembly 423, the probe assembly 423 includes a first probe and a second probe which are electrically connected, and the first probe is a signal probe. Specifically, the probe assembly 423 can be a combination of the first probe as a signal probe and the second probe as a ground probe, so that the test mechanism 421 can detect the single-ended impedance of the to-be-tested piece 200 (such as a printed circuit board) through the first probe and the second probe; the probe assembly 423 can also be a combination of the first probe and the second probe as signal probes, so that the test mechanism 421 can detect the differential impedance of the to-be-tested piece 200 (such as a printed circuit board) through the first probe and the second probe.

[0079] The second probes of the test mechanisms 421 of the two test units 42 are of the same type or different types. Specifically, the second probes of the test mechanisms 421 of the two test units 42 can be of the same type, for example, the second probes of the test mechanisms 421 of the two test units 42 are both ground probes, so that the test mechanisms 421 of the two test units 42 can detect the single-ended impedance of the DUT 200, of course, the second probes of the test mechanisms 421 of the two test units 42 can also be both signal probes, so that the test mechanisms 421 of the two test units 42 can detect the differential impedance of the DUT 200; or the second probes of the test mechanisms 421 of the two test units 42 are of different types, for example, the second probes of the test mechanisms 421 of one group of test units 42 are ground probes, so that the test mechanisms 421 of the group of test units 42 can detect the single-ended impedance of the DUT 200, and the second probes of the test mechanisms 421 of the other group of test units 42 are signal probes, so that the test mechanisms 421 of the group of test units 42 can detect the differential impedance of the DUT 200, that is, the test assembly 4 can simultaneously detect the single-ended impedance and the differential impedance of the DUT 200.

[0080] In other words, when only the single-ended impedance of the DUT 200 (such as a printed circuit board) needs to be detected, the second probes of the test mechanisms 421 of the test units 42 can all be set as ground probes; when only the differential impedance of the DUT 200 needs to be detected, the second probes of the test mechanisms 421 of the test units 42 can all be set as signal probes; when the single-ended impedance and the differential impedance of the DUT 200 need to be detected simultaneously, part of the second probes of the test mechanisms 421 can be set as signal probes, and the other part of the second probes of the test mechanisms 421 can be set as ground probes. In this way, the test device 100 can flexibly select the type of the second probes according to the detection requirements of the DUT 200, so as to improve the detection efficiency of the test device 100 on the DUT 200, and has strong applicability.

[0081] According to some embodiments of the present application, with reference to Figures 7-9 The positioning mechanism 2 comprises a first clamp assembly 22 and a second clamp assembly 23, and the first clamp assembly 22 and the second clamp assembly 23 are both arranged along the horizontal direction and clamp two side edges of the DUT 200 along the Y direction respectively. Specifically, the first clamp assembly 22 comprises a first clamping mechanism and a first clamping adjusting mechanism, the first clamping mechanism extends along the X direction, and the first clamping adjusting mechanism is connected with the first clamping mechanism to adjust the opening degree of a first clamping opening of the first clamping mechanism.

[0082] That is, the opening of the first clamping port can be adjusted to facilitate the placement of the clamping portion of the test piece 200 into the first clamping port, and then the opening of the first clamping port is adjusted to be small until the first clamping port can stably clamp the test piece 200. When the test piece 200 needs to be removed from the first clamping mechanism, the opening of the first clamping port is adjusted to be large again. In this way, the difficulty of clamping the test piece 200 by the first clamp assembly 22 can be reduced, the efficiency of placing and removing the test piece 200 can be improved, and the test piece 200 can be placed and removed from the upper part of the feeding port 11.

[0083] In addition, the first clamping mechanism extends in the X direction, so that the first clamping mechanism can clamp a larger range of test pieces 200 in the X direction, thereby improving the stability of the first clamping mechanism clamping the test piece 200, and avoiding misjudgment caused by the position deviation of the test piece 200, thereby improving the detection performance of the test equipment 100.

[0084] Further, the second clamp assembly 23 comprises a second clamping mechanism and a second clamping adjusting mechanism. The second clamping mechanism extends in the X direction, and the second clamping mechanism is arranged opposite to the first clamping mechanism in the Y direction. The second clamping adjusting mechanism is connected to the second clamping mechanism to adjust the opening of the second clamping port of the second clamping mechanism. The second clamping port and the first clamping port face each other in the Y direction. That is, the first clamping mechanism and the second clamping mechanism are respectively located on both sides of the test piece 200 in the Y direction, so that the first clamping mechanism and the second clamping mechanism can clamp the two ends of the test piece 200 in the Y direction respectively, further improving the clamping stability of the positioning mechanism 2 to the test piece 200, thereby avoiding misjudgment caused by the position deviation of the test piece 200, and improving the detection performance of the test equipment 100.

[0085] Specifically, the opening of the second clamping port can be adjusted to facilitate the placement of the clamping portion of the test piece 200 into the second clamping port, and then the opening of the second clamping port is adjusted to be small until the second clamping port can stably clamp the test piece 200. When the test piece 200 needs to be removed from the second clamping mechanism, the opening of the second clamping port is adjusted to be large again. In this way, the difficulty of clamping the test piece 200 by the second clamp assembly 23 can be reduced, and the efficiency of placing and removing the test piece 200 can be improved.

[0086] Optionally, the first clamping mechanism and the second clamping mechanism each comprise a first clamping piece (not shown) and a second clamping piece (not shown) arranged in a spaced-apart manner along the up-down direction, the first clamping piece being movably connected to the second clamping piece, and the first clamping piece and the second clamping piece being used for clamping the to-be-tested piece 200 therebetween, and the first clamping piece and the second clamping piece each extending along the X direction. The first clamping adjustment mechanism or the second clamping adjustment mechanism is used for driving the first clamping piece, and the first clamping piece can be translated along the Y direction and the up-down direction relative to the second clamping piece, so that the first clamping piece and the second clamping piece can be staggered or flush along the up-down direction.

[0087] In addition, the second clamping mechanism extends along the X direction, so that the second clamping mechanism can clamp a larger range of to-be-tested pieces 200 in the X direction, thereby improving the stability of the second clamping mechanism in clamping the to-be-tested piece 200, and further avoiding misjudgment or misjudgment caused by the position deviation of the to-be-tested piece 200, and facilitating the improvement of the detection performance of the testing equipment 100.

[0088] Among them, at least one of the first clamping mechanism and the second clamping mechanism is translatable along the Y direction. Specifically, one of the first clamping mechanism and the second clamping mechanism can be translatable along the Y direction, and both of the first clamping mechanism and the second clamping mechanism can be translatable along the Y direction. In this way, the spacing of the first clamping mechanism and the second clamping mechanism in the Y direction can be better adjusted, so that the positioning mechanism 2 can be adapted to and clamp to-be-tested pieces 200 of multiple specifications that are different in size in the Y direction, thereby improving the application range of the testing equipment 100.

[0089] Among them, the first clamping translation mechanism 24 used for driving the first clamping mechanism or the second clamping mechanism to translate along the Y direction is a linear motor, a lead screw feeding mechanism or a belt transmission mechanism, which is not specifically limited here.

[0090] Optionally, the first clamping mechanism is fixed to the rack 1, and the second clamping mechanism is translatable along the Y direction. That is, the first clamping translation mechanism 24 can drive the second clamping mechanism to move away from or approach the first clamping mechanism in the Y direction, so as to adjust the spacing of the first clamping mechanism and the second clamping mechanism in the Y direction, thereby enabling the positioning mechanism 2 to adapt to and clamp to-be-tested pieces 200 of multiple specifications that are different in size in the Y direction, thereby improving the application range of the testing equipment 100.

[0091] The first clamping translation mechanism 24 for driving the second clamping mechanism to translate is a belt transmission mechanism, and the first clamping translation mechanism 24 comprises a first belt transmission mechanism 241, a transmission rod 242 and a second belt transmission mechanism 243. The first belt transmission mechanism 241 and the second belt transmission mechanism 243 are arranged at opposite ends of the rack 1 along the X direction, the transmission rod 242 is located at one side of the delivery port 11 along the Y direction, the transmission rod 242 extends along the X direction, and the two ends of the transmission rod 242 are in transmission connection with the first belt transmission mechanism 241 and the second belt transmission mechanism 243 respectively. The opposite ends of the second clamping mechanism along the X direction are connected to the first belt transmission mechanism 241 and the second belt transmission mechanism 243 respectively.

[0092] That is, one end of the transmission rod 242 extending along the X direction is in transmission connection with the first belt transmission mechanism 241, and the other end of the transmission rod 242 extending along the X direction is in transmission connection with the second belt transmission mechanism 243. In this way, the synchronous rotation of the first belt transmission mechanism 241 and the second belt transmission mechanism 243 can be realized, so as to ensure the stable translation of the second clamping mechanism. In addition, the transmission rod 242, the first belt transmission mechanism 241 and the second belt transmission mechanism 243 can be prevented from extending into the delivery port 11, so as to avoid the interference between the second clamping translation mechanism 27 and the to-be-tested piece 200 during the taking and placing process, thereby improving the reliability of the test equipment 100.

[0093] In one specific example, the first clamping translation mechanism 24 further comprises a driving motor 244, and the output shaft of the driving motor 244 is connected with the transmission rod 242 through a belt. When the output shaft rotates, the transmission rod 242 is driven to rotate under the action of the belt, so as to drive the first belt transmission mechanism 241 and the second belt transmission mechanism 243 in transmission connection with the transmission rod 242, and then drive the second clamping mechanism to translate along the Y direction.

[0094] Optionally, the positioning mechanism 2 further comprises a third clamp assembly 25 and a fourth clamp assembly 26, and the third clamp assembly 25 and the fourth clamp assembly 26 are arranged along the horizontal direction and clamp two side edges of the to-be-tested piece 200 along the X direction respectively. Specifically, the third clamp assembly 25 comprises a third clamping mechanism and a third clamping adjusting mechanism connected with the third clamping mechanism to adjust the opening degree of a third clamping port of the third clamping mechanism.

[0095] That is, the opening of the third clamping port can be adjusted to facilitate the placement of the clamping portion of the test piece 200 into the third clamping port, and then the opening of the third clamping port can be adjusted to be small until the third clamping port can stably clamp the test piece 200. When the test piece 200 needs to be removed from the third clamping mechanism, the opening of the third clamping port can be adjusted to be large again. In this way, the difficulty of clamping the test piece 200 by the third clamp assembly 25 can be reduced, and the efficiency of placing and taking the test piece 200 can be improved.

[0096] Further, the fourth clamp assembly 26 comprises a fourth clamping mechanism and a fourth clamping adjusting mechanism. The fourth clamping mechanism is arranged opposite to the third clamping mechanism along the X direction and is spaced apart. The fourth clamping adjusting mechanism is connected to the fourth clamping mechanism to adjust the opening of the fourth clamping port of the fourth clamping mechanism. The fourth clamping port and the third clamping port are oriented towards each other in the X direction.

[0097] That is, the third clamping mechanism and the fourth clamping mechanism are respectively located on both sides of the test piece 200 in the X direction, so that the third clamping mechanism and the fourth clamping mechanism can clamp the two ends of the test piece 200 in the X direction respectively. In this way, the first clamping mechanism, the second clamping mechanism, the third clamping mechanism and the fourth clamping mechanism can respectively fix the four sides of the test piece 200, further improving the clamping stability of the positioning mechanism 2 to the test piece 200, so as to avoid the misjudgment caused by the position deviation of the test piece 200, and improve the detection performance of the test equipment 100.

[0098] Specifically, the opening of the fourth clamping port can be adjusted to facilitate the placement of the clamping portion of the test piece 200 into the fourth clamping port, and then the opening of the fourth clamping port can be adjusted to be small until the fourth clamping port can stably clamp the test piece 200. When the test piece 200 needs to be removed from the fourth clamping mechanism, the opening of the fourth clamping port can be adjusted to be large again. In this way, the difficulty of clamping the test piece 200 by the fourth clamp assembly 26 can be reduced, and the efficiency of placing and taking the test piece 200 can be improved.

[0099] Among them, at least one of the third clamping mechanism and the fourth clamping mechanism is translatable along the X direction. Specifically, one of the third clamping mechanism and the fourth clamping mechanism can be translatable along the X direction, or both the third clamping mechanism and the fourth clamping mechanism can be translatable along the X direction. In this way, the spacing of the third clamping mechanism and the fourth clamping mechanism in the X direction can be adjusted, so that the positioning mechanism 2 can adapt to and clamp test pieces 200 of different specifications in the X direction, thereby improving the application range of the test equipment 100.

[0100] The second clamping translation mechanism 27 for driving the third clamping mechanism or the fourth clamping mechanism to translate along the X direction is arranged on the inner side wall of the rack 1. In this way, the installation space of the second clamping translation mechanism 27 can be saved, so that the structure of the test equipment 100 is compact and the operation site is small.

[0101] Optionally, the third clamping mechanism and the fourth clamping mechanism can both translate along the Y direction. The third clamping translation mechanism 28 for driving the third clamping mechanism to translate along the Y direction is a linear motor, a screw feeding mechanism or a belt transmission mechanism, and the fourth clamping mechanism for driving the fourth clamping mechanism to translate along the Y direction is a linear motor, a screw feeding mechanism or a belt transmission mechanism.

[0102] That is, the third clamping translation mechanism 28 can adjust the position of the third clamping mechanism in the Y direction, and the fourth clamping translation mechanism 29 can adjust the position of the fourth clamping mechanism in the Y direction, so that the third clamping mechanism and the fourth clamping mechanism can be flexibly adjusted in the clamping position of the third clamping mechanism and the fourth clamping mechanism in the Y direction of the test piece 200 according to different clamping requirements of the test piece 200, thereby improving the stability of the positioning mechanism 2 fixing the test piece 200.

[0103] The third clamping translation mechanism 28 and / or the fourth clamping translation mechanism 29 are arranged on the second clamping translation mechanism 27. Specifically, one of the third clamping translation mechanism 28 and the fourth clamping translation mechanism 29 can be arranged on the second clamping translation mechanism 27, and both the third clamping translation mechanism 28 and the fourth clamping translation mechanism 29 can be arranged on the second clamping translation mechanism 27.

[0104] In one specific example, as shown in Figure 9 The fourth clamping mechanism is arranged on the connecting plate 291 of the second clamping translation mechanism 27, the connecting plate 291 extends along the Y direction, the two ends of the connecting plate 291 in the Y direction are slidably arranged on the opposite side walls of the rack 1 in the X direction, the second clamping translation mechanism 27 is used to drive the connecting plate 291 to translate along the X direction, the fourth clamping assembly 26 is arranged at one end of the connecting plate 291 facing the third clamping assembly 25, and the fourth clamping translation mechanism 29 is arranged on the bottom surface of the connecting plate 291. In this way, the interference risk of the fourth clamping translation mechanism 29 can be better avoided, and the position of the fourth clamping assembly 26 in the horizontal direction can be better adjusted by the second clamping translation mechanism 27 and the fourth clamping translation mechanism 29, so that the layout is compact and the occupied space is small.

[0105] Further, the third clamping translation mechanism 28 and the fourth clamping translation mechanism 29 are arranged on the rack 1 and located at opposite ends of the rack 1 along the X direction. In this way, the stability of the third clamping translation mechanism 28 and the fourth clamping translation mechanism 29 can be improved, and the stability of the third clamping mechanism and the fourth clamping mechanism in translation can be improved, thereby improving the reliability of the test equipment 100.

[0106] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0107] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A test apparatus, characterized by, The utility model relates to a test device for testing the upper and lower surfaces of a workpiece, comprising: a rack having a top with a drop opening; a positioning mechanism for positioning a workpiece to be tested, the positioning mechanism being provided on the rack and adapted to define a placement area for horizontally placing the workpiece to be tested, the placement area being located below and opposite to the drop opening and being in communication with the drop opening; a moving module, at least two groups of the moving module being provided on the rack and being located above and below the placement area; at least two groups of test assemblies, the test assemblies being provided on the moving module one by one in a one-to-one correspondence, each group of the moving module being used to drive the corresponding test assembly to move in a horizontal direction, and each test assembly comprising at least one test module, at least two groups of the test assemblies being used to detect the upper and lower surfaces of the workpiece to be tested, respectively; wherein the workpiece to be tested is adapted to be placed on the placement area from the top of the drop opening and positioned on the positioning mechanism, and the positioning mechanism comprises: a first clamp assembly, the first clamp assembly comprising a first clamping mechanism and a first clamping adjustment mechanism, the first clamping mechanism extending in an X direction, and the first clamping adjustment mechanism being connected to the first clamping mechanism to adjust the opening degree of a first clamping opening of the first clamping mechanism; a second clamp assembly, the second clamp assembly comprising a second clamping mechanism and a second clamping adjustment mechanism, the second clamping mechanism extending in the X direction, the second clamping mechanism being arranged opposite to and spaced apart from the first clamping mechanism in a Y direction, and the second clamping adjustment mechanism being connected to the second clamping mechanism to adjust the opening degree of a second clamping opening of the second clamping mechanism, the second clamping opening and the first clamping opening being directed towards each other in the Y direction, and at least one of the first clamping mechanism and the second clamping mechanism being translatable in the Y direction; a third clamp assembly, the third clamp assembly comprising a third clamping mechanism and a third clamping adjustment mechanism, the third clamping adjustment mechanism being connected to the third clamping mechanism to adjust the opening degree of a third clamping opening of the third clamping mechanism; a fourth clamp assembly, the fourth clamp assembly comprising a fourth clamping mechanism and a fourth clamping adjustment mechanism, the fourth clamping mechanism being arranged opposite to and spaced apart from the third clamping mechanism in the X direction, and the fourth clamping adjustment mechanism being connected to the fourth clamping mechanism to adjust the opening degree of a fourth clamping opening of the fourth clamping mechanism, the fourth clamping opening and the third clamping opening being directed towards each other in the X direction, and at least one of the third clamping mechanism and the fourth clamping mechanism being translatable in the X direction.

2. The test apparatus of claim 1, wherein, The rack comprises: a base; A support is arranged on the base, the upper mobile module is arranged on the upper surface of the support, the upper test assembly is arranged on the upper mobile module, the support and the base define a containing space, the lower mobile module is arranged on the base and in the containing space, the lower test assembly is arranged in the containing space and on the lower mobile module, the feeding opening is formed on the top of the support, and the feeding opening is opposite to and communicates with the containing space in the vertical direction.

3. The test apparatus of claim 1, wherein, Each of the mobile modules comprises: an X-direction translation mechanism, which is provided with a support plate and is configured to drive the support plate to translate in the X-direction; a Y-direction translation mechanism, which is arranged on the support plate and is configured to drive the test assembly to translate in the Y-direction; when the X-direction translation mechanism drives the support plate to translate in the X-direction, the Y-direction translation mechanism is driven to translate in the X-direction, so as to drive the test assembly to translate in the X-direction.

4. The test apparatus of claim 3, wherein, The X-direction translation mechanism is a linear motor or a screw feeding mechanism; and / or, the Y-direction translation mechanism is a linear motor or a screw feeding mechanism.

5. The test apparatus of claim 3, wherein, Each of the mobile modules comprises two Y-direction translation mechanisms which are arranged opposite to and spaced apart from each other in the X-direction, and each of the Y-direction translation mechanisms is provided with the test module; each of the mobile modules comprises one X-direction translation mechanism, and the X-direction translation mechanism of each of the mobile modules is provided with two support plates which are arranged opposite to and spaced apart from each other in the X-direction, and the two Y-direction translation mechanisms of each of the mobile modules are arranged on the two support plates, respectively.

6. The test apparatus of claim 5, wherein, Each of the support plates is provided with two first sliding rails which are arranged opposite to and spaced apart from each other in the X-direction, the Y-direction translation mechanism is arranged between the two first sliding rails, the bottom surface of the test module is provided with two first sliding blocks which are slidably connected to the two first sliding rails, respectively; and / or, the top of the rack is provided with two second sliding rails which are located at opposite ends of the rack in the Y-direction, and the bottom surface of each of the support plates is provided with two second sliding blocks which are slidably connected to the two second sliding rails, respectively.

7. The test apparatus of claim 1, wherein, Each of the test modules comprises: a mounting rack; at least one test unit which is arranged on the mounting rack, the test unit comprises a test mechanism and a test driving mechanism, the test driving mechanism is arranged on the mounting rack, the test driving mechanism is connected to the test mechanism to drive the test mechanism to move away from or approach the test object, and the test mechanism is configured to test single-end impedance or differential impedance; an image acquisition unit which is arranged on the mounting rack and is configured to acquire the position of a detection point on the test object.

8. The test apparatus of claim 7, wherein, The test units are two and are arranged on opposite sides of the mounting rack, respectively, and the image acquisition unit is arranged on one side of the mounting rack and is located on the same side of the two test units.

9. The test apparatus of claim 7, wherein, The test units are two, the test mechanism of each test unit comprises a probe assembly, the probe assembly comprises a first probe and a second probe connected by electricity, the first probe is a signal probe, and the second probe is a ground probe or a signal probe.

10. The test apparatus of any one of claims 1-9, wherein, The first clamping translation mechanism for driving the first clamping mechanism or the second clamping mechanism to translate along the Y direction is a linear motor, a screw feeding mechanism or a belt transmission mechanism.

11. The test apparatus of claim 10, wherein, The first clamping mechanism is fixed to the rack, the second clamping mechanism is translatable along the Y direction, the first clamping translation mechanism for driving the second clamping mechanism to translate is a belt transmission mechanism, The first clamping translation mechanism comprises a first belt transmission mechanism, a transmission rod and a second belt transmission mechanism, the first belt transmission mechanism and the second belt transmission mechanism are arranged at opposite ends of the rack along the X direction, the transmission rod is located at one side of the drop port along the Y direction, the transmission rod extends along the X direction, two ends of the transmission rod are in transmission connection with the first belt transmission mechanism and the second belt transmission mechanism respectively, and opposite ends of the second clamping mechanism are connected to the first belt transmission mechanism and the second belt transmission mechanism along the X direction respectively.

12. The test apparatus of claim 10, wherein, The second clamping translation mechanism for driving the third clamping mechanism or the fourth clamping mechanism to translate along the X direction is a linear motor, a screw feeding mechanism or a belt transmission mechanism.

13. The test apparatus of claim 12, wherein, The third clamping mechanism is fixed relative to the rack along the X direction, the fourth clamping mechanism is translatable along the X direction, the second clamping translation mechanism for driving the fourth clamping mechanism to translate is a belt transmission mechanism, and the second clamping translation mechanism is arranged on the inner side wall of the rack.

14. The test apparatus of claim 12, wherein, The third clamping translation mechanism and the fourth clamping translation mechanism are arranged on the rack and located at opposite ends of the rack along the X direction, and the third clamping mechanism and the fourth clamping mechanism are both translatable along the Y direction.

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