CN218445573U

CN218445573U - Down pressure testing device

Info

Publication number: CN218445573U
Application number: CN202221614641.2U
Authority: CN
Inventors: 冯志成; 罗梓林
Original assignee: Foshan Linkage Technology Co ltd
Current assignee: Foshan Linkage Technology Co ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2023-02-03
Anticipated expiration: 2032-06-24

Abstract

The application discloses a press-down testing device, which comprises a base, wherein a telescopic supporting piece suitable for supporting a piece to be tested is arranged on a testing base of the base; the downward pressing and clamping mechanism comprises a sliding block which is arranged on one side wall of the base in a sliding mode and a clamping jaw structure which is connected to the sliding block in a rotating mode around a rotating shaft; the clamping jaw structure comprises a pressed part rotating around the rotating shaft and a pressing part rotating along with the rotation of the pressed part, and the pressing part has a pressing state and a loosening state leaving a space above the to-be-tested piece in the rotating process; the driving mechanism comprises a driving piece arranged on the base and a pushing piece driven by the driving piece to do linear motion; the pushing piece drives the pressed part to rotate around the rotating shaft and slide along the sliding block in sequence in the process of linear motion. The application provides a push down testing arrangement can further push down the piece of awaiting measuring after compressing tightly the piece of awaiting measuring, makes the test contact piece on the piece of awaiting measuring all contact well with the scalable support piece on the test base, improves the test reliability.

Description

Press-down test device

Technical Field

The application relates to the technical field of testing devices, in particular to a press-down testing device.

Background

In the semiconductor automation industry, a to-be-tested piece is often required to be placed on an automatic test platform for corresponding process test, and the automatic test platform in the process is matched with a conveying mechanism such as a mechanical arm and the like to complete the steps of placing and clamping the to-be-tested piece, electrifying for testing, taking out the device and the like.

In order to clamp a to-be-tested piece, a clamping structure is provided, which includes a driving motor, an output end of the driving motor is connected to one end of a push rod, two sides of the other end of the push rod are respectively connected to one end of a first connecting rod and one end of a second connecting rod, the other end of the first connecting rod is connected to one end of a first pressing rod, and the other end of the second connecting rod is connected to one end of a second pressing rod.

During testing, the driving motor is started to drive the push rod, so that the first connecting rod and the second connecting rod are driven to deflect, then the other end of the first pressing rod and the other end of the second pressing rod are driven to deflect towards a to-be-tested piece respectively, and the to-be-tested piece is further compressed.

However, the design has the following defects:

after the test piece to be tested is pressed on the test base, part of the test contact pieces of the test piece to be tested may not be in good contact with the test butt-joint pieces on the test base, so that errors occur in the test result.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the application is to overcome the defect that in the prior art, the test contact pieces on the to-be-tested piece cannot be in good contact with the test butt-joint piece on the test base completely, so that the test result is wrong, and the push-down test device for enabling the test contact pieces on the to-be-tested piece to be in good contact with the test butt-joint piece on the test base is provided.

In order to solve the technical problem, the push-down testing device of the application comprises:

the device comprises a base, a testing base and a testing device, wherein the base is provided with a testing base, and the testing base is provided with a telescopic supporting piece suitable for supporting a piece to be tested;

the downward pressing and clamping mechanism comprises a sliding block which is installed on one side wall of the base in a sliding mode and a clamping jaw structure which is connected to the sliding block in a rotating mode around a rotating shaft; the clamping jaw structure comprises a pressed part rotating around the rotating shaft and a pressing part rotating along with the rotation of the pressed part, and the pressing part has a pressing state pressing above the to-be-tested piece and a loosening state leaving a space above the to-be-tested piece in the rotating process;

the driving mechanism comprises a driving piece arranged on the base and a pushing piece driven by the driving piece to do linear motion; the pushing piece sequentially drives the pressed part to rotate around the rotating shaft and slide along the sliding block in the process of linear motion.

Furthermore, one end of the pressure part, which is close to the pushing part, is provided with a cam guider in transmission fit with the pushing part.

Furthermore, the compression part and the compression part of the clamping jaw structure are integrally formed, and the clamping jaw structure is provided with a hole for the rotating shaft to pass through; clamping jaw structure with it establishes to be connected with the cover between the pivot epaxial torsional spring rotates, the elastic force of torsional spring orders about the clamping jaw structure compress tightly the portion by the state of compressing tightly rotates the unclamping state.

Furthermore, the clamping jaw structures are at least provided with two clamping jaw structures in pairs, and the clamping jaw structures are connected to the sliding block.

Further, the base comprises a mounting bottom plate and a supporting plate connected to the mounting bottom plate, the testing base is mounted above the supporting plate, a guide rail is arranged on the side wall of the supporting plate, and the sliding block is connected to the guide rail in a sliding manner; the testing device comprises a sliding block and a testing base, wherein an elastic piece is further arranged between the sliding block and the testing base, and the sliding block is driven to move towards the direction close to the testing base by the elastic force of the elastic piece.

Furthermore, a photoelectric sensor is arranged on the mounting bottom plate, an induction sheet is fixedly connected to the pushing member, and when the induction sheet moves to the position of the photoelectric sensor along with the pushing member, the photoelectric sensor sends out a control signal for controlling the driving member to stop running.

Furthermore, the sliding block is provided with a first limiting end face which is in limited abutting contact with the pushing piece, an elastic piece is further arranged between the first limiting end face and the test base, and the elastic force of the elastic piece drives the sliding block to move towards the direction close to the test base.

Furthermore, a second limiting end face is arranged on the supporting plate, and a limiting part located between the second limiting end face and the mounting bottom plate is connected to the sliding block.

Furthermore, scalable support piece is scalable probe, scalable probe with the stitch of waiting to test the piece offsets.

Furthermore, a guide structure suitable for guiding the installation position of the to-be-tested piece and a positioning structure suitable for positioning the to-be-tested piece are arranged on the test base.

This application technical scheme has following advantage:

1. according to the press-down testing device, the pushing piece sequentially drives the pressed part to rotate around the rotating shaft and the sliding block to slide in the process of making linear motion, and firstly, the pushing piece drives the pressed part to rotate around the rotating shaft, so that the pressed part can be pressed tightly on a piece to be tested; then the pushing piece continuously drives the sliding block to slide downwards, the pressing part of the clamping jaw structure connected to the sliding block in a rotating mode through the rotating shaft drives the to-be-tested piece to move downwards, and the telescopic support piece has telescopic performance and can provide a certain downward moving distance for a stitch of the to-be-tested piece; this kind of push down testing arrangement places the test base or takes out the in-process of waiting to test the piece from the test base at the piece that will await testing at the manipulator for push down the clamping jaw structure of waiting to test the piece can be fine avoid the manipulator, the action of compressing tightly of waiting to test the piece simultaneously and the action of avoiding the manipulator can be driven by same driving piece, has simple structure, convenient control, easy equipment use moreover, cost of manufacture low grade advantage.

2. The application provides a push down testing arrangement, the setting of torsional spring in the pivot can be after the test has been awaited measuring the piece, and the portion that compresses tightly gets into the unclamping state automatically, conveniently gets rid of the piece of awaiting measuring on the one hand, and on the other hand avoids interfering the test area that the piece of awaiting measuring got into the test base when the piece of awaiting measuring gets into next.

3. The application provides a push down testing arrangement, the setting of elastic component between first spacing terminal surface and the test base can be with the help of the elastic force of elastic component, draws the slider to the test base, makes the slider playback, for next test ready.

4. The application provides a push down testing arrangement is equipped with the locating part on the slider, and the spacing terminal surface cooperation of second in locating part and the backup pad can inject the distance that shifts up of slider, avoids the slider excessively to move up.

5. The application provides a push down testing arrangement, photoelectric sensor and response piece's cooperation can guarantee the accuracy of impeller lapse distance, avoids the excessive lapse of impeller, leads to the portion of compressing tightly will treat that test piece excessively presses scalable support piece to, and damages scalable support piece.

6. The application provides a test device pushes down, scalable support piece is scalable probe, and scalable probe offsets with the stitch of waiting to test the piece, can guarantee in the test process of pushing down that each stitch of waiting to test the piece all contacts well with scalable support piece on the test base, improves the test reliability.

7. The application provides a push down testing arrangement, realize compressing tightly and the further complicated consecutive action that pushes down by a power supply, ingenious utilization extension spring and torsional spring realize the reset function of clamping jaw structure, guaranteed simultaneously to place and take out the space requirement of required dislocation when waiting to test the piece and the requirement that makes the test piece that awaits measuring contact the probe completely. The device has the advantages of simple structure, convenient control, easy assembly and use, low manufacturing cost and the like.

Drawings

In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a cross-sectional schematic view of a front view of a push down test apparatus provided herein;

FIG. 2 is a schematic cross-sectional view of a left side view of a push down test apparatus provided herein;

FIG. 3 is a top view of a push down test apparatus provided herein;

FIG. 4 is an isometric view of a push down test apparatus provided herein;

fig. 5 is a partial perspective view of a push down test apparatus provided in the present application.

Description of reference numerals:

11. a support plate; 111. a second limiting end face; 13. an elastic member; 14. a guide rail; 15. testing the base; 16. A telescoping support; 17. a guide structure; 18. a positioning structure; 181. an eccentric shaft; 182. positioning pins; 19. mounting a bottom plate; 2. a jaw structure; 21. a pressure receiving portion; 22. a pressing part; 23. a rotating shaft; 24. a cam guide; 25. a torsion spring; 26. a shaft sleeve; 3. a drive mechanism; 31. a drive member; 32. a pusher member; 33. A push rod; 34. a nut; 7. an induction sheet; 4. a photosensor; 5. a slider; 51. a first limit end face; 52. a limiting member; 6. a test piece to be tested; 61. and (4) stitching.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In addition, the technical features mentioned in the different embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 5, the push-down testing apparatus in this embodiment is used for fixing and continuously pushing down a to-be-tested object 6 to improve testing reliability, and includes a base, a push-down clamping mechanism, and a driving mechanism 3.

The base is provided with a testing base 15, the material of the base is an insulating material, two sides of the testing base 15 are provided with guide structures 17 with guide oblique angles, the guide structures are suitable for guiding the piece 6 to be tested to enter a testing area (not shown) on the testing base 15, meanwhile, the guide structures 17 can also limit the displacement of the piece 6 to be tested in the left and right directions from the left and right sides, the other two sides of the testing base 15 are provided with positioning structures 18, specifically, the positioning structures 18 comprise two thicker eccentric shafts 181 and thinner positioning pins 182, and the eccentric shafts 181 and the positioning pins 182 are positioned on two opposite sides of the testing base 15. The guide structure 17 and the positioning structure 18 can correct errors generated during the placement of the test piece 6 and deliver position correction accuracy for the following test piece 6.

A sunken groove is formed in the middle of the upper portion of the test base 15, the to-be-tested part 6 is suitable for being placed in the sunken groove, the eccentric shaft 181 and the positioning pin 182 are arranged on the bottom of the sunken groove, and when the to-be-tested part 6 is placed in the sunken groove and subjected to a downward pressing test, the upper surface of the to-be-tested part 6 is not higher than the upper top surface of the test base 15.

The bottom of the sinking groove of the testing base 15 is provided with a retractable supporting member 16 adapted to support the test piece 6 to be tested, which is a testing butt piece on the testing base 15, and the number and position of the retractable supporting member are determined by the number of pins 61 on the test piece 6 to be tested. Specifically, the retractable supporting member 16 is a probe, the lower end of which is connected to the power supply, and the upper end of which contacts with the pins of the test object 6, and is a test contact element of the test object 6, and the probe contracts when being pressed down by the test object 6, so as to ensure that each pin on the test object 6 can be in good contact with the probe on the test base 15, and improve the test reliability.

The base further comprises a mounting base plate 19, two support plates 11 connected to the mounting base plate 19, and a photoelectric sensor 4 fixedly connected to the mounting base plate 19. Two supporting plates 11 are located below the testing base 15, as shown in fig. 2, a second limiting end surface 111 is formed on one of the supporting plates 11, and guide rails 14 are further disposed on two sides of one side wall thereof, specifically, the guide rails 14 are cross slide rail pairs. Of course, the slide block can also be a common rail, and the slide block can slide relative to the support plate 11 only by arranging the roller on the slide block 5. Of course, it is also possible to provide only one guide rail on the side wall of the support plate 11.

The press down clamping mechanism comprises a slide block 5 slidably mounted on a side wall of a support plate 11 of the base and a jaw structure 2 pivotally connected to the slide block 5 about a pivot 23. The slider 5 is slidably connected to the guide rail 14 of the support plate 11 and is configured such that the slider 5 can slide up and down relative to the support plate 11. The slider 5 is provided with a first limiting end face 51, an elastic part 13 is further arranged between the first limiting end face 51 and the testing base 15, the elastic force of the elastic part 13 drives the slider 5 to move towards the direction close to the testing base 15, and the slider 5 always tends to move towards the testing base 15. Specifically, the elastic member 13 is a tension spring, but may be other common elastic member having elasticity, such as an elastic cord, which is provided to pull the slider 5 toward the test base 15 to return the slider to the initial position. Specifically, extension spring's one end is fixed on test base 15, and the other end is fixed on slider 5, and all can be dismantled between extension spring and the test base 15 and between extension spring and the slider 5 and be connected, and the convenience is when extension spring elasticity is not good, changes extension spring.

The slider 5 is cuboid, and the centre is equipped with the opening, is equipped with the locating part 52 in its both sides are fixed, and at the relative backup pad 11 of slider 5 in-process that upwards slides, the locating part 52 butt on the slider 5 second spacing terminal surface 111 on the backup pad 11 prevents the excessive upwards slip of slider 5.

As another embodiment, the limiting member is disposed on the supporting plate 11, and the first limiting end surface is disposed on the sliding block 5, and the two are matched to still control the upward sliding stroke of the sliding block 5.

The clamping jaw structure 2 is provided with two at least in pairs, and in this embodiment, the clamping jaw structure 2 is provided with two in pairs, and certainly, can also be three, four, or even more, can set up according to actual need. Both jaw structures 2 are connected to a slide 5. Specifically, the clamping jaw structure 2 is provided with a hole, one end of the rotating shaft 23 is fixed on the sliding block 5, the other end of the rotating shaft is fixed in the hole of the clamping jaw structure 2, the front of the clamping jaw structure 2 is positioned by a shaft shoulder of the rotating shaft 23, and the rear of the clamping jaw structure is supported by a shaft sleeve 26. The clamping jaw structure 2 is rotatably connected to the sliding block 5 through the rotating shaft 23 and can lift along with the sliding block 5. The jaw structure 2 includes a pressure receiving portion 21 rotating around a rotation shaft 23 and a pressing portion 22 rotating along with the rotation of the pressure receiving portion 21, and the pressure receiving portion 21 and the pressing portion 22 are integrally formed, but may be formed separately and fixedly connected together. Still be equipped with torsional spring 25 between clamping jaw structure 2 and the pivot 23, torsional spring 25 cup joints on the pivot 23. Specifically, one end of the torsion spring 25 is fixed in the hole of the jaw structure 2, and the other end is fixed in the hole of the rotating shaft 23, so that the elastic force of the torsion spring 25 can drive the pressing portion 22 of the jaw structure 2 to rotate from the pressing state to the loosening state. Of course, the torsion spring 25 may be other elements having a resilient characteristic, such as a tension spring and a spring plate. Specifically, the contained angle between compression portion 21 and the portion 22 that compresses tightly is the obtuse angle, and the arm length that compresses tightly portion 22 is greater than the arm length of compression portion 21, so sets up, when compression portion 21 rotates less distance, can make the portion 22 that compresses tightly rotate great distance to be favorable to compressing tightly that portion 22 is better or avoiding waiting to test piece 6.

The pressing portion 22 has a pressed state of pressing on the test piece 6 during rotation and a released state of leaving the space above the test piece 6. The pressure receiving portion 21 is provided with a cam guide 24, and the cam guide 24 is fixed to the rotating shaft 23.

Specifically, notches are provided on two opposite sides of the testing base 15, and the two pressing portions 22 are respectively located at corresponding notch positions and can rotate in a space where the notches are located. In the state of compressing tightly, two portions of compressing tightly 22 can be fixed the await measuring piece 6, prevent its all around removal, at the state of loosening, because two portions of compressing tightly 22 leave the space above the await measuring piece 6, can conveniently put into the test area on the test base 15 with the await measuring piece 6, avoid putting into the time by the interference of clamping jaw structure 2 to lead to awaiting measuring piece 6 slope can't pack into the test area even.

The driving mechanism 3 comprises a driving piece 31 arranged on the base and a pushing piece 32 driven by the driving piece 31 to do linear motion; the pushing member 32 drives the pressed part 21 to rotate around the rotating shaft 23 and the sliding block 5 to slide in sequence in the process of linear movement.

Specifically, the driving member 31 preferably uses a linear stepping motor, and the linear stepping motor can be used to stop or start at any position, so that the driving member has an accurate and reliable position control function. Of course, other types of motors are possible, and the drive member 31 may also be driven pneumatically or hydraulically. As shown in fig. 5, the output end of the driving member 31 is connected with a push rod 33, a pushing member 32 is fixed on the push rod 33, the pushing member 32 is fixed on the push rod 33 through a nut 34, and a sensing piece 7 is fixed on the pushing member 33, when the sensing piece 7 moves to the position of the photoelectric sensor 4 on the mounting base plate 19 along with the pushing member 32, the photoelectric sensor 4 sends a control signal for controlling the driving member 31 to stop running. The photoelectric sensor 4 is matched with the sensing piece 7, so that the accuracy of the downward movement distance of the pushing piece 32 can be ensured, and the situation that the pushing piece 32 excessively moves downwards to cause the pressing part 22 to excessively press the to-be-tested piece 6 to the telescopic support piece 16 to damage the telescopic support piece 16 is avoided. In the view of fig. 1, pushing portions (not labeled) are further disposed on the left and right sides of the pushing member 32, and abut against the cam guides 24, so that the two cam guides 24 disposed opposite to each other are relatively separated, and the pressing portion 22 of the clamping jaw structure 2 is driven to press the test piece 6.

The working process of the push-down test device is described as follows:

firstly, a conveying mechanism such as a mechanical arm puts the piece to be tested 6 on a testing base 15 from top to bottom along a guide structure 17, the piece to be tested 6 is placed between an eccentric shaft 181 and a positioning pin 182, and a telescopic supporting piece 16 on the testing base 15 contacts and supports a pin 61 of the piece to be tested 6;

starting the driving part 31, and driving the driving part 31 to drive the pushing part 32 fixedly connected to the push rod 33 to move downwards;

the pushing piece 32 is abutted against the cam guider 24, the pressed part 21 of the clamping jaw structure 2 is relatively opened to drive the pressing part 22 of the clamping jaw structure 2 to press the piece to be tested 6, the pushing piece 32 moves downwards continuously, the pushing piece 32 is abutted against the first limiting end face 51 on the sliding block 5 to drive the sliding block 5 to move downwards together, and further the pressing part 22 of the clamping jaw structure 2 connected with the sliding block 5 in a rotating mode is driven to continuously press the piece to be tested 6 downwards, due to the scalability of the telescopic supporting piece 16, a further downward moving distance can be provided for pins of the piece to be tested 6, so that the pins of the piece to be tested 6 are pressed tightly by pressure, and the testing reliability is improved;

when the sensing piece 7 moves to the position of the photoelectric sensor 4 along with the pushing piece 32, the photoelectric sensor 4 sends out a control signal for controlling the driving piece 31 to stop running.

At this time, the test of the test piece 6 to be tested is completed, the driving member 31 drives the pushing member 32 to move upward, and the slider 5 is pulled by the elastic member 13 and moves upward together with the components such as the clamping jaw structure 2 connected to the slider 5, until the limiting member 52 on the slider 5 abuts against the second limiting end surface 111 on the supporting plate 11, the slider 5 stops moving upward, and the pushing member 32 also reaches the initial position to wait for the detection of the next test piece 6 to be tested.

The complex that pushes down testing arrangement in this application is realized compressing tightly and is further pushed down by a power supply and links up the action, and ingenious utilization extension spring and torsional spring 25 realize slider 5 and clamping jaw structure 2's reset function, guaranteed simultaneously place and take out the required space requirement of dislocation when waiting to test 6 and the requirement that makes that it contacts the probe completely to wait to test 6. The device has the advantages of simple structure, convenient control, easy assembly and use, low manufacturing cost and the like.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of this invention are intended to be covered by the scope of the invention as expressed herein.

Claims

1. A push-down test device, comprising:

the device comprises a base, a testing base (15) is arranged on the base, and a telescopic supporting piece (16) suitable for supporting a piece to be tested (6) is arranged on the testing base (15);

the downward pressing and clamping mechanism comprises a sliding block (5) which is installed on one side wall of the base in a sliding mode, and a clamping jaw structure (2) which is connected to the sliding block (5) in a rotating mode around a rotating shaft (23); the clamping jaw structure (2) comprises a compression part (21) rotating around the rotating shaft (23) and a pressing part (22) rotating along with the rotation of the compression part (21), and the pressing part (22) has a pressing state pressing on the part to be tested (6) and a releasing state leaving the space above the part to be tested (6) in the rotating process;

the driving mechanism (3) comprises a driving piece (31) arranged on the base and a pushing piece (32) driven by the driving piece (31) to do linear motion; the pushing piece (32) sequentially drives the pressed part (21) to rotate around the rotating shaft (23) and the sliding block (5) to slide in the process of making linear motion.

2. The push-down testing device according to claim 1, wherein one end of the pressure receiving portion (21) close to the pushing member (32) is provided with a cam guide (24) in driving engagement with the pushing member (32).

3. The press-down testing device according to claim 1, wherein the compression part (21) and the compression part (22) of the clamping jaw structure (2) are integrally formed, and a hole for the rotating shaft (23) to pass through is formed in the clamping jaw structure (2); clamping jaw structure (2) with it establishes to be connected with the cover between pivot (23) torsional spring (25) on pivot (23), the elastic force of torsional spring (25) orders about the portion (22) that compresses tightly of clamping jaw structure (2) by the state of compressing tightly rotates the unclamping state.

4. Press-down testing device according to claim 1, wherein at least two of said jaw structures (2) are provided in pairs, at least two of said jaw structures (2) being connected to said slide (5).

5. The push-down test device according to claim 1, wherein the base comprises a mounting base plate (19) and a support plate (11) connected to the mounting base plate (19), the test base (15) is mounted above the support plate (11), a guide rail (14) is arranged on a side wall of the support plate (11), and the slider (5) is slidably connected to the guide rail (14); an elastic piece (13) is further arranged between the sliding block (5) and the testing base (15), and the sliding block (5) is driven to move towards the direction close to the testing base (15) by the elastic force of the elastic piece (13).

6. The push-down test device according to claim 5, wherein a photoelectric sensor (4) is arranged on the mounting base plate (19), a sensing piece (7) is fixedly connected to the pushing piece (32), and when the sensing piece (7) moves to the position of the photoelectric sensor (4) along with the pushing piece (32), the photoelectric sensor (4) sends out a control signal for controlling the driving piece (31) to stop running.

7. The push-down test device according to claim 5, wherein the sliding block (5) has a first limit end surface (51) which is in limit abutment with the pushing member (32), an elastic member (13) is further arranged between the first limit end surface (51) and the test base (15), and the elastic force of the elastic member (13) drives the sliding block (5) to move towards the test base (15).

8. The push-down test device according to claim 7, wherein a second limit end surface (111) is provided on the support plate (11), and a limit member (52) is connected to the slider (5) and located between the second limit end surface (111) and the mounting base plate (19).

9. A push-down test device according to claim 1, characterised in that the retractable support (16) is a retractable probe which abuts against a pin of the piece to be tested (6).

10. A push-down testing device according to claim 1, characterized in that the testing base (15) is provided with guiding structures (17) adapted to guide the mounting orientation of the piece to be tested (6), and positioning structures (18) adapted to position the piece to be tested (6).