A multi-layer positioning test fixture

Abstract

The application discloses a kind of multilayer positioning test fixture, comprising: workbench, lower detection mechanism, upper detection mechanism and lifting mechanism, lower detection mechanism includes base and first conductor assembly;Upper detection mechanism includes detection apron and second conductor assembly;The lower end surface of detection apron is provided with accommodating groove;Lifting mechanism one end and detection apron are abutted with each other.Working, the workpiece of the carrier plate with is placed in accommodating groove, lifting mechanism operates, to press together detection apron moves downward along vertical direction, drives carrier plate and workpiece to be down to the end surface of workpiece respectively with first conductor assembly and second conductor assembly abut, realize the clamping positioning of workpiece;This test fixture can be clamped workpiece by the conductor assembly arranged above and below, and the workpiece is fully positioned.The scheme provides a kind of multilayer positioning mode, gradually completes the positioning of workpiece, and a variety of positioning modes are combined, effectively improve positioning accuracy.

Description

Technical Field

[0001] This invention relates to the field of fixture technology, and in particular to a multi-layer positioning test fixture. Background Technology

[0002] After electronic products (such as electronic watches) are manufactured, performance tests are generally conducted using testing equipment to ensure that they can operate normally and stably.

[0003] In existing testing fixtures, when performing performance testing on electronic watches, the electronic watch is typically first mounted onto a carrier plate through its casing (for ease of transport), and then the carrier plate with the electronic watch is fixed to the corresponding testing station. After the probes of the testing equipment are electrically connected to the chip of the electronic watch, the performance test is performed. The disadvantage of this method is that, using a carrier plate for positioning, the chip of the electronic watch is prone to misalignment during testing, resulting in poor contact with the probes and inaccurate test results.

[0004] Therefore, it is necessary to improve the existing detection devices to solve the technical problems of insufficient workpiece positioning and poor detection accuracy. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-layer positioning test fixture to solve the above-mentioned technical problems.

[0006] To achieve this objective, the present invention adopts the following technical solution: a multi-layer positioning test fixture, comprising:

[0007] Workbench;

[0008] The lower testing mechanism includes a base disposed on a workbench and a first conductor assembly installed inside the base; the upper end of the first conductor assembly is exposed outside the base.

[0009] The upper inspection mechanism is located above the lower inspection mechanism and includes an inspection tray and a second conductor assembly installed inside the inspection tray; the lower end face of the inspection tray is provided with a receiving groove for accommodating the workpiece, and the lower end of the second conductor assembly extends into the receiving groove.

[0010] The lifting mechanism has one end abutting against the detection tray, which is used to press the detection tray to move downward in the vertical direction, so that the two ends of the workpiece abut against the first conductor assembly and the second conductor assembly respectively.

[0011] Optionally, the lifting mechanism includes:

[0012] Guide components are mounted on the worktable;

[0013] A connecting plate, which is slidably connected to the guide assembly in the vertical direction;

[0014] The first driving component is mounted on the workbench. The driving end of the first driving component is connected to the connecting plate and is used to drive the connecting plate to move linearly in the vertical direction.

[0015] The pressure column is located on the lower end face of the connecting plate, and the lower end face of the pressure column abuts against the detection support plate.

[0016] Optionally, it also includes a positioning mechanism mounted on the connecting plate, the positioning mechanism including a positioning mounting plate and a first positioning component mounted on the positioning mounting plate;

[0017] The first positioning component includes a fixing block, and a number of positioning protrusions are provided on the lower end face of the fixing block. The detection plate has positioning holes corresponding to the positions of the positioning protrusions, and the positioning protrusions are inserted into the positioning holes.

[0018] Optionally, the positioning mechanism may also include a second positioning component;

[0019] The second positioning component includes a second driving member and a pressure block that is slidably connected to the fixed block in the vertical direction. The driving end of the second driving member is connected to the pressure block and is used to drive the pressure block to move in the vertical direction.

[0020] A first connector is installed on the pressure block, with the lower end of the first connector exposed on the lower end face of the pressure block. A second connector for connecting to the second conductor assembly is provided on the upper end face of the tray, and the first connector and the second connector are plugged into each other.

[0021] Optionally, a groove is provided in the middle of the fixed block along the vertical direction, and the pressure block is slidably connected in the groove;

[0022] The upper end of the pressure block is provided with a limiting platform extending to both sides, and several first buffer springs are provided between the limiting platform and the fixed block.

[0023] Optionally, the positioning mechanism may also include a clamping component;

[0024] The clamping assembly includes a bushing, a clamping spring, and a pin. The bushing is mounted on a positioning mounting plate and has a shaft hole in the vertical direction. The pin is slidably connected in the shaft hole. The lower end of the pin protrudes from the shaft hole and abuts against the detection plate.

[0025] The clamping spring is installed in the shaft hole, and the two ends of the clamping spring are connected to the pin and the positioning mounting plate, respectively.

[0026] Optionally, the upper detection mechanism also includes a first PCB board; the second conductor assembly is disposed on the lower end face of the first PCB board;

[0027] The testing tray includes a first tray and a second tray. The upper end face of the first tray is provided with a positioning pin, and the second tray is detachably connected to the first tray through the positioning pin.

[0028] The second tray has a first groove, and the first PCB board is installed in the first groove;

[0029] A second groove is formed through the first tray at the position corresponding to the first groove, and the first groove and the second groove are connected to form a receiving groove.

[0030] Optionally, the launching organization may also be included;

[0031] The ejection mechanism includes a slider that is slidably connected to the worktable along a first direction, and a clearance groove for the clearance detection mechanism is provided in the middle of the slider; the first direction is the length direction of the worktable.

[0032] The upper end face of the slider is provided with a guide post in the vertical direction, and the detection plate is slidably connected to the guide post in the vertical direction.

[0033] Optionally, a pin is provided between the detection tray and the slider, and the detection tray and the pin are slidably connected;

[0034] A return spring is fitted onto the pin, and the two ends of the return spring are connected to the detection plate and the slider, respectively.

[0035] Optionally, the ejection mechanism may also include a handle connected to one end of the slider.

[0036] Compared with the prior art, the present invention has the following beneficial effects: During operation, the carrier plate with the workpiece is placed in the receiving groove, and the lifting mechanism operates to press the detection tray downward in the vertical direction, driving the carrier plate and the workpiece downward until the two end faces of the workpiece abut against the first conductor assembly and the second conductor assembly respectively, thereby realizing the clamping and positioning of the workpiece; at the same time, the first conductor assembly, the workpiece and the second conductor assembly are electrically connected, thereby detecting the workpiece; this test fixture can clamp the workpiece through the upper and lower conductor assemblies, fully positioning the workpiece, avoiding workpiece shaking during testing, and improving detection accuracy. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0039] Figure 1 A schematic diagram of the lifting mechanism of the multi-layer positioning test fixture when it is open;

[0040] Figure 2 This is a schematic diagram of the lifting mechanism of a multi-layer positioning test fixture when it is closed.

[0041] Figure 3 A schematic diagram of the ejection mechanism of the multi-layer positioning test fixture during ejection;

[0042] Figure 4 This is a schematic diagram of the testing section of a multi-layer positioning test fixture;

[0043] Figure 5 A top view of the connecting plate of the multi-layer positioning test fixture;

[0044] Figure 6 Multi-layer positioning test fixture Figure 5 Schematic diagram of the cross-sectional structure at point AA;

[0045] Figure 7 A schematic diagram of the upper testing machine and the ejection mechanism of the multi-layer positioning test fixture;

[0046] Figure 8 This is a schematic diagram of the lower detection mechanism of a multi-layer positioning test fixture;

[0047] Figure 9 A bottom view of the upper detection mechanism of a multi-layer positioning test fixture;

[0048] Figure 10 This is a schematic diagram of the positioning mechanism of a multi-layer positioning test fixture;

[0049] Figure 11 A bottom view of the positioning mechanism of a multi-layer positioning test fixture;

[0050] Figure 12 This is a cross-sectional structural diagram of the clamping component of a multi-layer positioning test fixture.

[0051] Illustration: Workbench 1;

[0052] Lower detection mechanism 2, base 21, first conductor assembly 22;

[0053] Upper detection mechanism 3, detection tray 31, second conductor assembly 32, receiving groove 33, positioning hole 311, second connector 34, first PCB board 35, first tray 312, second tray 313, positioning pin 314, lifting mechanism 4, guide assembly 41, connecting plate 42, first driving component 43, pressure column 44;

[0054] Positioning mechanism 5, positioning mounting plate 51, first positioning component 52, fixing block 521, positioning protrusion 522, second positioning component 53, pressure block 532, second driving component 531, first connector 533, slide groove 523, limiting stage 534, first buffer spring 54, tightening component 55, bushing 551, tightening spring 552, pin 553, second PCB board 56;

[0055] The components include: ejection mechanism 6, slider 61, clearance groove 62, guide post 63, handle 64, pin 65, and return spring 66. Detailed Implementation

[0056] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0057] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0058] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0059] This invention provides a multi-layer positioning test fixture, comprising:

[0060] Workbench 1;

[0061] The lower detection mechanism 2 includes a base 21 disposed on the workbench 1, and a first conductor assembly 22 installed in the base 21; the upper end of the first conductor assembly 22 is exposed outside the base 21.

[0062] The upper detection mechanism 3 is located above the lower detection mechanism 2 and includes a detection tray 31 and a second conductor assembly 32 installed in the detection tray 31. The lower end face of the detection tray 31 is provided with a receiving groove 33 for accommodating the workpiece, and the lower end of the second conductor assembly 32 extends into the receiving groove 33. The detection tray 31 serves to support the workpiece.

[0063] The lifting mechanism 4 has one end abutting against the detection tray 31, which is used to press the detection tray 31 to move downward in the vertical direction, so that the two ends of the workpiece abut against the first conductor assembly 22 and the second conductor assembly 32 respectively.

[0064] Combination Figure 10 As shown, the second conductor assembly 32 is a ring-shaped conductive ring;

[0065] It should be noted that the workpiece in this solution includes a carrier plate and an electronic watch (to be tested), with the electronic watch placed on the carrier plate. During testing, the upper testing mechanism 3 moves downward, and the workpiece is pressed and fixed between the first conductor assembly 22 and the second conductor assembly 32, and is connected to the electronic watch for testing.

[0066] The working principle of this invention is as follows: During operation, a carrier plate with a workpiece is placed in the receiving groove 33. The lifting mechanism 4 operates to press the detection tray 31 downward in the vertical direction, driving the carrier plate and the workpiece downward until the two end faces of the workpiece abut against the first conductor assembly 22 and the second conductor assembly 32 respectively, thereby achieving clamping and positioning of the workpiece. At the same time, the first conductor assembly 22, the workpiece and the second conductor assembly 32 are electrically connected, thereby detecting the workpiece. Compared with the testing device in the prior art, this testing fixture can clamp the workpiece through the upper and lower conductor assemblies, fully positioning the workpiece, avoiding workpiece shaking during testing, and improving detection accuracy.

[0067] In this embodiment, the lifting mechanism 4 includes:

[0068] Guide assembly 41 is mounted on worktable 1;

[0069] Connecting plate 42 is slidably connected to guide assembly 41 in the vertical direction;

[0070] The first driving component 43 is installed on the workbench 1. The driving end of the first driving component 43 is connected to the connecting plate 42 and is used to drive the connecting plate 42 to move linearly in the vertical direction.

[0071] Pressure column 4 and pressure column 44 are disposed on the lower end face of connecting plate 42, and the lower end face of pressure column 44 abuts against detection tray 31.

[0072] Combination Figure 1As shown, the first driving component 43 is a lifting cylinder, and the piston rod of the lifting cylinder is connected to the connecting plate 42. When working, the first driving component 43 runs to drive the connecting plate 42 and the pressure column 44 to move in the vertical direction, and the pressure column 44 drives the upper detection mechanism 3 to move downward in the vertical direction.

[0073] The guide assembly 41 includes several guide posts, which are respectively located at the four corners outside the upper detection mechanism 3.

[0074] Furthermore, the multi-layer positioning test fixture also includes a positioning mechanism 5 mounted on the connecting plate 42. The positioning mechanism 5 includes a positioning mounting plate 51 and a first positioning component 52 mounted on the positioning mounting plate 51.

[0075] The first positioning component 52 includes a fixing block 521. The lower end face of the fixing block 521 is provided with a plurality of positioning protrusions 522. The detection plate 31 has positioning holes 311 corresponding to the positions of the positioning protrusions 522, and the positioning protrusions 522 are inserted into the positioning holes 311.

[0076] Furthermore, the positioning mechanism 5 also includes a second positioning component 53;

[0077] The second positioning component 53 includes a second driving member 531 and a pressure block 532 that is slidably connected to the fixed block 521 in the vertical direction. The driving end of the second driving member 531 is connected to the pressure block 532 and is used to drive the pressure block 532 to move in the vertical direction.

[0078] A first connector 533 is installed on the pressure block 532, and the lower end of the first connector 533 is exposed on the lower end face of the pressure block 532. A second connector 34 connected to the second conductor assembly 32 is provided on the upper end face of the detection tray 31. The first connector 533 and the second connector 34 are plugged into each other.

[0079] Combination Figure 3 As shown, the positioning mechanism 5 is used to position the upper detection mechanism 3. When the lifting mechanism 4 moves downward, it will drive the positioning mechanism 5 to press down synchronously. The positioning protrusion 522 will first abut against the detection tray 31 until the positioning protrusion 522 is inserted into the positioning hole 311. The first positioning component 52 plays a role in the initial positioning (coarse positioning) of the upper detection mechanism 3.

[0080] After the initial positioning, the second positioning component 53 is activated, that is, the second driving component 531 is started to drive the pressure block 532 to move downwards, and the first connector 533 and the second connector 34 are inserted to achieve secondary positioning (precision positioning) of the upper detection mechanism 3.

[0081] In this scheme, the precise positioning of the upper detection mechanism 3 is achieved through the cooperation of the first positioning component 52 and the second positioning component 53.

[0082] To further explain, a groove 523 is provided in the middle of the fixed block 521 along the vertical direction, and the pressure block 532 is slidably connected in the groove 523;

[0083] The upper end of the pressure block 532 is provided with a limiting platform 534 extending to both sides thereon, and a number of first buffer springs 54 are provided between the limiting platform 534 and the fixing block 521.

[0084] Combination Figure 6 As shown, when the pressure block 532 slides down along the slide groove 523, the first buffer spring 54 plays an elastic buffering role to prevent the pressure block 532 from damaging the upper detection mechanism 3.

[0085] As a preferred embodiment, the positioning mechanism 5 further includes a clamping component 55;

[0086] The clamping assembly 55 includes a bushing 551, a clamping spring 552, and a pin 553. The bushing 551 is mounted on the positioning mounting plate 51. The bushing 551 has a shaft hole in the vertical direction. The pin 553 is slidably connected in the shaft hole. The lower end of the pin 553 is exposed in the shaft hole and abuts against the detection support plate 31.

[0087] The clamping spring 552 is installed in the shaft hole, and the two ends of the clamping spring 552 are connected to the pin 553 and the positioning mounting plate 51, respectively.

[0088] The clamping component 55 serves to pre-press the detection tray 31, and the clamping spring 552 provides a downward elastic force to the detection tray 31 to clamp the detection tray 31, so as to facilitate the positioning of the first positioning component 52 and the second positioning component 53.

[0089] In this embodiment, the upper detection mechanism 3 further includes a first PCB board 35; the second conductor assembly 32 is disposed on the lower end surface of the first PCB board 35;

[0090] The detection tray 31 includes a first tray 312 and a second tray 313. The upper end face of the first tray 312 is provided with a positioning pin 314. The second tray 313 is detachably connected to the first tray 312 through the positioning pin 314; that is, the second tray 313 is slidably connected to the positioning pin 314 in the vertical direction.

[0091] The second tray 313 has a first groove, and the first PCB board 35 is installed in the first groove.

[0092] A second groove is provided on the first tray 312 at the position corresponding to the first groove, and the first groove and the second groove are connected to form a receiving groove 33.

[0093] Optionally, the first tray 312 is provided with a magnetic part, which is used to magnetically connect with the second tray 313.

[0094] Combination Figure 7 As shown, the first tray 312 and the second tray 313 are arranged vertically at intervals. When installing a workpiece, the second tray 313 is slid vertically upward to open the detection tray 31 and place the workpiece between the first tray 312 and the second tray 313. The first tray 312 and the second tray 313 are magnetically connected, and the workpiece is pressed by the second tray 313 so that the workpiece is accommodated in the receiving groove 33.

[0095] It should be noted that a second PCB board 56 is also installed inside the positioning mechanism 5. Through the connection between the first connector 533 and the second connector 34, the first PCB board 35 and the second PCB board 56 are made conductive, thereby transmitting the information detected by the first conductor assembly 22 and the second conductor assembly 32 to the second PCB board 56 for data export.

[0096] In this embodiment, the multi-layer positioning test fixture also includes an ejection mechanism 6;

[0097] The ejection mechanism 6 includes a slider 61 that is slidably connected to the worktable 1 along a first direction. The slider 61 has a clearance groove 62 in the middle for the clearance detection mechanism 2. The first direction is the length direction of the worktable 1.

[0098] A guide post 63 is provided on the upper end face of the slider 61 in the vertical direction, and the detection plate 31 is slidably connected to the guide post 63 in the vertical direction.

[0099] Preferably, the ejection mechanism 6 further includes a handle 64, which is connected to one end of the slider 61.

[0100] The detection space is set between the lifting mechanism 4 and the lower detection mechanism 2, and the upper detection mechanism 3 is slidably set in the detection space.

[0101] Combination Figure 3 The diagram shown is a structural schematic of the ejection mechanism 6 in the ejection state. During operation, the handle 64 is pulled to make the slider 61 slide out along the first direction, thereby driving the upper detection mechanism 3 to slide out of the detection space.

[0102] It should be noted that the upper inspection mechanism 3 is pushed out to facilitate the replacement and installation of workpieces, and the upper inspection mechanism 3 is pushed in to inspect the workpieces.

[0103] In this embodiment, a pin 65 is provided between the detection plate 31 and the slider 61, and the detection plate 31 and the pin 65 are slidably connected.

[0104] A return spring 66 is fitted on the pin 65, and the two ends of the return spring 66 are connected to the detection plate 31 and the slider 61 respectively.

[0105] Combination Figure 7As shown, when the lifting mechanism 4 drives the upper detection mechanism 3 to move downward in the vertical direction, it will compress the return spring 66, which has upward elastic potential energy. When the lifting mechanism 4 stops running, the return spring 66 will push the upper detection mechanism 3 to reset, so that it can be used for the next workpiece cycle.

[0106] Combine and combine Figures 1 to 12 As shown, the specific workflow of this solution is as follows:

[0107] First, the ejection mechanism 6 is ejected, and the second pallet 313 slides vertically upward to open the detection pallet 31. The workpiece is placed between the first pallet 312 and the second pallet 313. The first pallet 312 and the second pallet 313 are magnetically connected. The workpiece is pressed by the second pallet 313, so that the workpiece is accommodated in the accommodating groove 33.

[0108] Next, the push-out mechanism 6 will be pushed forward and positioned between the lifting mechanism 4 and the lower detection mechanism 2 for positioning; the specific positioning steps are as follows:

[0109] In the first stage of positioning, the lifting mechanism 4 moves and drives the connecting plate 42 to descend, so that the lower end face of the pressure column 44 abuts against the detection tray 31, thus initially positioning the detection tray 31; the lifting mechanism continues to move, so that the clamping component 55 abuts against the detection tray 31, clamping the detection tray 31; thereby achieving the pressing of the detection tray 31.

[0110] In the second positioning, the lifting mechanism 4 continues to operate, and the pressure column 44 presses the detection tray 31 to move downward in the vertical direction, driving the carrier plate and the workpiece downward until the two ends of the workpiece abut against the first conductor assembly 22 and the second conductor assembly 32 respectively, thereby achieving the clamping and positioning of the workpiece.

[0111] In the third positioning stage, the lifting mechanism 4 moves downward, which drives the positioning mechanism 5 to press down synchronously. The positioning protrusion 522 first abuts against the detection tray 31 until it is inserted into the positioning hole 311. The first positioning component 52 performs preliminary positioning (coarse positioning) of the upper detection mechanism 3. After preliminary positioning, the second positioning component 53 works, that is, the second driving component 531 is activated to drive the pressure block 532 to move downward until the first connector 533 and the second connector 34 are inserted, realizing secondary positioning (fine positioning) of the upper detection mechanism 3. Through the cooperation of the first positioning component 52 and the second positioning component 53, the upper detection mechanism 3 is precisely positioned. Since the workpiece is positioned on the upper detection mechanism 3, the workpiece is precisely positioned.

[0112] In summary, this solution uses a multi-layer positioning method to gradually position the workpiece. The combination of multiple positioning methods effectively improves positioning accuracy and avoids the problem of poor accuracy with a single positioning method.

[0113] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-layer positioning test fixture, characterized in that, include: Workbench (1); The lower detection mechanism (2) includes a base (21) disposed on the workbench (1) and a first conductor assembly (22) installed in the base (21); the upper end of the first conductor assembly (22) is exposed outside the base (21). The upper detection mechanism (3) is located above the lower detection mechanism (2) and includes a detection tray (31) and a second conductor assembly (32) installed in the detection tray (31); the lower end face of the detection tray (31) is provided with a receiving groove (33) for accommodating a carrier plate with a workpiece, and the lower end of the second conductor assembly (32) extends into the receiving groove (33); Lifting mechanism (4), one end of which abuts against the detection tray (31) to press the detection tray (31) to move downward in the vertical direction, so that the two ends of the workpiece abut against the first conductor assembly (22) and the second conductor assembly (32) respectively; The lifting mechanism (4) includes: A guide assembly (41) is mounted on the worktable (1); A connecting plate (42) is slidably connected to the guide assembly (41) in the vertical direction; The first driving component (43) is installed on the workbench (1). The driving end of the first driving component (43) is connected to the connecting plate (42) and is used to drive the connecting plate (42) to move linearly in the vertical direction. A pressure column (44) is disposed on the lower end face of the connecting plate (42), and the lower end face of the pressure column (44) abuts against the detection tray (31); It also includes a positioning mechanism (5) mounted on the connecting plate (42), the positioning mechanism (5) including a positioning mounting plate (51) and a first positioning component (52) mounted on the positioning mounting plate (51); The first positioning component (52) includes a fixing block (521), and the lower end face of the fixing block (521) is provided with a plurality of positioning protrusions (522). The detection tray (31) has a positioning hole (311) corresponding to the position of the positioning protrusion (522), and the positioning protrusion (522) is inserted into the positioning hole (311). The positioning mechanism (5) also includes a second positioning component (53); The second positioning component (53) includes a second driving member (531) and a pressure block (532) that is slidably connected to the fixed block (521) in the vertical direction. The driving end of the second driving member (531) is connected to the pressure block (532) and is used to drive the pressure block (532) to move in the vertical direction. The pressure block (532) is equipped with a first connector (533), the lower end of the first connector (533) is exposed on the lower end face of the pressure block (532), and the upper end face of the tray is provided with a second connector (34) connected to the second conductor assembly (32). The first connector (533) and the second connector (34) are plugged into each other. The upper detection mechanism (3) also includes a first PCB board (35); the second conductor assembly (32) is disposed on the lower end face of the first PCB board (35).

2. The multi-layer positioning test fixture according to claim 1, characterized in that, The fixing block (521) has a vertical groove (523) in the middle, and the pressing block (532) is slidably connected in the groove (523); The upper end of the pressure block (532) is provided with a limiting platform (534) extending to both sides thereon, and a plurality of first buffer springs (54) are provided between the limiting platform (534) and the fixing block (521).

3. The multi-layer positioning test fixture according to claim 2, characterized in that, The positioning mechanism (5) also includes a clamping component (55); The clamping assembly (55) includes a bushing (551), a clamping spring (552), and a pin (553). The bushing (551) is mounted on the positioning mounting plate (51). The bushing (551) has a shaft hole in the vertical direction. The pin (553) is slidably connected in the shaft hole. The lower end of the pin (553) is exposed in the shaft hole and abuts against the detection support plate (31). The clamping spring (552) is installed in the shaft hole, and the two ends of the clamping spring (552) are respectively connected to the pin (553) and the positioning mounting plate (51).

4. The multi-layer positioning test fixture according to claim 1, characterized in that, The detection tray (31) includes a first tray (312) and a second tray (313). The upper end face of the first tray (312) is provided with a positioning pin (314), and the second tray (313) is detachably connected to the first tray (312) through the positioning pin (314). The second tray (313) has a first groove, and the first PCB board (35) is installed in the first groove; A second groove is provided through the first tray (312) at the position corresponding to the first groove, and the first groove and the second groove are connected to form the receiving groove (33).

5. The multi-layer positioning test fixture according to claim 1, characterized in that, It also includes the launching agency (6); The ejection mechanism (6) includes a slider (61) that is slidably connected to the worktable (1) along a first direction. The slider (61) has an air-avoiding groove (62) in the middle for avoiding the lower detection mechanism (2). The first direction is the length direction of the worktable (1). The upper end face of the slider (61) is provided with a guide post (63) in the vertical direction, and the detection plate (31) is slidably connected to the guide post (63) in the vertical direction.

6. The multi-layer positioning test fixture according to claim 5, characterized in that, A pin (65) is provided between the detection tray (31) and the slider (61), and the detection tray (31) and the pin (65) are slidably connected; A return spring (66) is fitted on the pin (65), and the two ends of the return spring (66) are connected to the detection plate (31) and the slider (61) respectively.

7. The multi-layer positioning test fixture according to claim 5, characterized in that, The ejection mechanism (6) also includes a handle (64) which is connected to one end of the slider (61).

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