A clamping device suitable for integrated circuit tester

Abstract

The present application provides a clamping device suitable for an integrated circuit tester, comprising a panel fixing frame for fixing and installing a panel to be tested, cam follower bearings are arranged on both sides of the panel fixing frame; a clamping platform, the clamping platform comprising a base plate and a movable clamping member, the movable clamping member is arranged on one side of the base plate, the movable clamping member comprises two lower pressure plates and a screw adjustment assembly; the two lower pressure plates are arranged relatively on the base plate to form a clamping space, the opposite sides of the two lower pressure plates are provided with guide grooves, the guide grooves are inclined along the length direction of the lower pressure plates, when the panel fixing frame is installed in the clamping space, the cam follower bearings of the panel fixing frame are located in the guide grooves and slide with the guide grooves; when the screw adjustment assembly drives the two lower pressure plates to move relative to the base plate along the length direction of the lower pressure plates, the cam follower bearings slide in the guide grooves to switch the panel to be tested between the locking and pulling states.

Description

Technical Field

[0001] The present application relates to the field of chip testing technology, and in particular to a clamping device suitable for an integrated circuit tester. Background Art

[0002] The Automatic Test Equipment (ATE) system for integrated circuits aligns the female connector on the function board with the male connector on the device under test (DUT) board to create a locking and extraction mechanism.

[0003] Existing test equipment has multiple PCB functional boards, and the functional signals are transmitted from the female connectors on the boards to the male connectors on the device under test board. Since there are a large number of connection pins on the 20 connectors, about 2,500, each pin generates a force of about 0.3N when engaged, and the engagement force is relatively large.

[0004] In existing technical equipment, a connecting rod device is mostly used to drive the two side pressure plates to press the device board under test. However, the pressing process is too direct, and the connector pins are easily worn. The pins are easily broken during the matching process because they are not aligned, which causes the connector on the device board under test to be scrapped. At the same time, two connecting rod handles are mostly used to apply force. The more labor-saving the structure is, the larger the movable space of the handle during use, and the greater the material processing cost.

[0005] Therefore, to prevent the connection pins from being damaged, the connection between the DUT board and the functional board must be relatively stable during the process. The downward pressure on the DUT board must be vertical and downward. If the connector pins are deformed or broken during the downward pressure, the DUT board can be pushed out in time to prevent the connector on the DUT board from being scrapped. At the same time, ensuring the simplicity and labor-saving of the force-applying structure requires reducing the movement space of the force-applying structure, reducing processing costs, and also providing convenience for subsequent replacement of the DUT board. To this end, a mechanism is needed that can simultaneously clamp the DUT board during testing and facilitate its removal for replacement. Summary of the Invention

[0006] The embodiment of the present application provides a clamping device suitable for an integrated circuit tester, which can solve the problem in the prior art that it cannot simultaneously meet the requirements of clamping the device board under test during testing and conveniently pulling out the device board under test to replace it.

[0007] According to a first aspect of an embodiment of the present application, a clamping device suitable for an integrated circuit tester is provided, the clamping device comprising:

[0008] A panel fixing frame is used to fix and install the panel to be tested, and cam follower bearings are provided on both sides of the panel fixing frame;

[0009] The clamping platform includes a base plate and a movable clamping member, the movable clamping member is arranged on one side of the base plate, and the movable clamping member includes two lower pressing plates and a screw adjustment assembly;

[0010] Two lower pressing plates are arranged opposite to each other on the base plate to form a clamping space. A guide groove is provided on the opposite side of the two lower pressing plates. The guide groove is inclined along the length direction of the lower pressing plates. When the panel fixing frame is installed in the clamping space, the cam follower bearing of the panel fixing frame is located in the guide groove and slides with the guide groove.

[0011] When the screw adjustment assembly drives the two lower pressing plates to move relative to the base plate along the length direction of the lower pressing plates, the cam follower bearing slides in the guide groove to switch the panel to be tested between the locking state and the pulling state.

[0012] Furthermore, a positioning protrusion is provided on the substrate, and a positioning hole is provided on the panel fixing frame. When the panel fixing frame is installed in the clamping space, the positioning protrusion is located in the positioning hole to limit the panel fixing frame on the plane where the substrate is located.

[0013] Furthermore, a slider is fixedly connected to the side of the lower pressing plate facing the base plate, and a guide rail is provided on the side of the base plate facing the lower pressing plate. The guide rail extends along the length direction of the lower pressing plate, and the slider is slidably matched with the guide rail.

[0014] Furthermore, the slider is fixedly connected to the lower pressing plate via a screw-nut assembly, or the slider and the lower pressing plate are integrally formed.

[0015] Furthermore, the guide rail is fixedly connected to the base plate through a screw-nut assembly, or a strip groove is provided on the base plate to form the guide rail.

[0016] Furthermore, the movable clamping member also includes a connecting plate, both ends of which are fixedly connected to the two lower pressing plates respectively, and the connecting plate is connected to the screw adjustment assembly.

[0017] Furthermore, the screw adjustment assembly includes a pulsator handwheel and a screw rod, and the connecting plate is rotationally connected to the pulsator handwheel through the screw rod. During the rotation of the pulsator handwheel, the connecting plate drives the two lower pressure plates to move.

[0018] Furthermore, a bearing seat fixing block is fixedly provided on the base plate, the bearing seat fixing block is arranged between the impeller handwheel and the connecting plate, and the impeller handwheel is rotatably connected to the bearing seat fixing block.

[0019] Furthermore, a first limiting groove and a second limiting groove are provided on the lower pressing plate; and a limiting protrusion is provided on the panel fixing frame;

[0020] When the panel to be tested is in a locked state, the limiting protrusion is located in the first limiting groove; when the panel to be tested is in a pulled-out state, the limiting protrusion is located in the second limiting groove.

[0021] Furthermore, a plurality of cam follower bearings are provided on both sides of the panel fixing frame, and a plurality of guide grooves are provided on each lower pressing plate 5 , and the plurality of cam follower bearings and the plurality of guide grooves correspond one to one.

[0022] The clamping device provided in the embodiment of the present application includes a panel fixing frame and a clamping platform, the clamping platform includes a base plate and a movable clamping member, after the panel to be tested is fixedly installed on the panel fixing frame, the panel fixing frame with the panel to be tested is clamped in the movable clamping member. Cams are provided on both sides of the panel fixing frame.

[0023] The driven bearing and the movable clamping part include two lower pressing plates and a screw adjustment assembly. The two lower pressing plates are provided with guide grooves on the opposite sides. The guide grooves are inclined along the length direction of the lower pressing plates.

[0024] When the fixed frame is installed and clamped in the space, the cam follower bearing of the panel fixing frame is located in the guide groove and slides with the guide groove; when the screw adjustment assembly drives the two lower pressing plates to move relative to the base plate along the length direction of the lower pressing plate, the cam follower bearing slides in the guide groove to allow the panel to be tested to be locked and

[0025] Since the guide groove is an inclined groove, that is, it extends along the length direction of the lower pressing plate 5 and also extends along the thickness direction of the lower pressing plate, so that when the screw adjustment assembly drives the two lower pressing plates

[0026] When the lower pressing plate moves along the length direction relative to the base plate, the panel fixing frame on which the panel to be tested is mounted moves in the thickness direction relative to the clamping table, thereby achieving compression and lifting of the panel to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the panel fixing frame structure of the clamping device provided in an embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of the structure of the clamping platform of the clamping device provided in an embodiment of the present application;

[0029] Figure 3 This is a second structural diagram of the clamping platform of the clamping device provided in an embodiment of the present application;

[0030] Figure 4 A schematic cross-sectional view of a clamping device provided in an embodiment of the present application, wherein the screw rod is not locked before movement;

[0031] Figure 5 A schematic cross-sectional view of the clamping device provided in an embodiment of the present application, wherein the screw rod is locked after movement;

[0032] Figure 6The panel fixing frame of the clamping device provided in the embodiment of the present application is assembled on the clamping table and locked.

[0033] Front schematic diagram;

[0034] Figure 7 A schematic diagram of a panel fixing frame of the clamping device provided in an embodiment of the present application after being assembled on a clamping platform and locked;

[0035] Figure 8 Schematic diagram of the guide groove on one side of the lower pressure plate provided in an embodiment of the present application.

[0036] Reference numerals:

[0037] 1. Panel fixing frame; 11. Cam follower bearing; 12. Positioning hole; 13. Limiting protrusion; 2. Movable clamping piece; 20. Positioning protrusion; 201. Bearing seat fixing block; 210. Lower pressure plate; 211. Connecting plate; 212. Slider fixing hole; 213. Slider; 214. Guide rail; 215. Guide groove; 216. First limiting groove; 217. Second limiting groove; 220. Flange nut; 221. Screw; 222. Bearing seat; 223. Nut; 224. Impeller handwheel; 225. Tightening bolt; 3. Base plate; 31. Pin fixing hole; 32. Panel fixing slot. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0039] The terms "first," "second," "third," "fourth," and the like in the specification and claims of this application and in the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the application described herein can be practiced in orders other than those illustrated or described herein.

[0040] It should be understood that in the various embodiments of the present application, the size of the serial number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0041] It should be understood that in this application, "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0042] It should be understood that in this application, "multiple" means two or more. "And / or" is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "Contains A, B and C", "Contains A, B, C" means that A, B, and C are all included, "Contains A, B or C" means that one of A, B, and C is included, and "Contains A, B and / or C" means that any one, any two, or any three of A, B, and C are included.

[0043] It should be understood that, in this application, "B corresponding to A," "B corresponding to A," "A corresponds to B," or "B corresponds to A" means that B is associated with A and that B can be determined based on A. Determining B based on A does not mean determining B solely based on A; B can also be determined based on A and / or other information. A match between A and B occurs when the similarity between A and B is greater than or equal to a preset threshold. Depending on the context, "if," as used herein, can be interpreted as "at," "when," "in response to determining," or "in response to detecting."

[0044] The following specific embodiments are used to describe the technical solution of the present application in detail. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0045] like Figure 1-7 As shown, an embodiment of the present application provides a clamping device suitable for an integrated circuit tester, which is used to clamp a panel to be tested so as to be placed in the integrated circuit tester for testing. The panel to be tested may be a chip, an integrated circuit, etc. The clamping device includes a panel fixing frame 1 and a clamping table. The panel fixing frame 1 is a square frame, which is used to fix and install the panel to be tested, and facilitates the plugging and unplugging of the connector. At the same time, it can avoid the damage of the panel to be tested caused by being directly clamped by the clamping device. Cam follower bearings 11 are provided on both sides of the panel fixing frame 1. The cam follower bearings 11 may be a bearing or a cylindrical protrusion. The cam follower bearings 11 are fixedly connected to the panel fixing frame 1.

[0046] The clamping platform includes a base plate 3 and a movable clamping member 2. The movable clamping member 2 is arranged on one side of the base plate and includes two lower pressure plates 210 and a screw adjustment assembly. The two lower pressure plates 210 are arranged on the base plate 3 to form a clamping space. The two lower pressure plates 210 are provided with guide grooves 215 on the opposite sides of the lower pressure plates 210. The guide grooves 215 are arranged obliquely along the length of the lower pressure plates. When the panel fixing frame 1 is installed in the clamping space, the cam follower bearing 11 of the panel fixing frame 1 is located in the guide grooves 215 and slides with the guide grooves 215.

[0047] When the screw adjustment assembly drives the two lower pressing plates 210 to move along the length direction of the lower pressing plates relative to the base plate 3 , the cam follower bearing 11 slides in the guide groove 215 to switch the panel to be tested between the locking state and the pulling state.

[0048] It can be understood that the base plate 3 is the installation base of the movable clamping member 2, and the base plate 30 is provided with a panel fixing slot 32, a pin positioning hole 31 and a positioning pin 200, and a bearing seat fixing block 201 for fixing the screw bearing seat 222.

[0049] The two lower pressing plates 210 are respectively installed on the two side edges of the base plate 3 and are slidably connected to the base plate. A clamping space is formed between the two lower pressing plates 210 for clamping the panel fixing frame 1. A guide groove 215 is provided on the side wall of the lower pressing plate 210 forming the clamping space, and the guide groove 215 is an oblique groove. That is, the guide groove 215 extends along the length direction of the lower pressing plate and also extends along the thickness direction of the lower pressing plate. When the lower pressing plate 210 moves relative to the base plate 3 driven by the screw adjustment assembly, due to the sliding fit between the oblique groove on the lower pressing plate 210 and the cam follower bearing on the panel fixing frame 1, the panel fixing frame 1 moves in the thickness direction relative to the clamping table, so that the switching between the locking and pulling states can be achieved.

[0050] Optionally, the guide groove 215 extends to the surface of the lower pressing plate 210 away from the base plate 3. In this way, when the lower pressing plate 210 moves relative to the base plate 3 driven by the screw adjustment assembly, the panel fixing frame 1 can be moved out of the clamping space, making it easier to remove the panel fixing frame 1.

[0051] Multiple cam follower bearings 11 can be installed on both sides of the panel mounting frame 1, evenly spaced along the sides of the panel mounting frame 1. Accordingly, each lower pressing plate 210 is provided with multiple guide grooves 215, evenly spaced along the sidewalls of the lower pressing plate 210, with each cam follower bearing 11 corresponding to each guide groove 215. This ensures uniform force distribution and movement of the panel mounting frame 1, ensuring stable installation of the panel under test and preventing damage to the panel during compression and removal.

[0052] Optionally, a positioning protrusion 20 is provided on the substrate 30, and a positioning hole 12 is provided on the panel fixing frame 1. When the panel fixing frame 1 is installed in the clamping space, the positioning protrusion 20 is located in the positioning hole 12 to limit the panel fixing frame 1 on the plane where the substrate 30 is located. It is understandable that a positioning hole can also be provided on the substrate 30, and a positioning protrusion can be provided on the panel fixing frame 1. Through the cooperation of the positioning hole and the positioning protrusion, the panel fixing frame 1 can be accurately positioned. There can be multiple positioning holes, and the positioning protrusions and the positioning holes correspond one to one. In this way, the installation stability of the panel to be tested can be guaranteed, the test error caused by the installation position can be reduced, and during the pressing or pulling process, it can be ensured that the device board to be tested is docked or separated with multiple connectors in the test machine to ensure its docking and separation are smooth.

[0053] In the present application, the lower pressing plate 210 is slidably connected to the base plate 30. Specifically, a slider 213 is fixedly connected to the side of the lower pressing plate 210 facing the base plate 30, and a guide rail 214 is provided on the side of the base plate 30 facing the lower pressing plate 210. The guide rail extends along the length of the lower pressing plate, and the slider 213 and the guide rail 214 are slidably engaged. Another optional solution is to provide a guide rail on the side of the lower pressing plate 210 facing the base plate 30, and a slider is fixedly provided on the side of the base plate 30 facing the lower pressing plate 210, so that the lower pressing plate 210 and the base plate 30 can slide relative to each other through the cooperation of the guide rail and the slider.

[0054] Optionally, the slider 213 and the lower pressing plate 210 are separate structures, and the lower pressing plate 210 is provided with a slider fixing hole 212. The slider 213 is fixedly connected to the lower pressing plate 210 through a screw-nut assembly and the slider fixing hole 212. In this way, the slider 213 and the lower pressing plate 210 can be easily installed and removed. Alternatively, the slider 213 and the lower pressing plate 210 are integrally formed structural components.

[0055] Optionally, the guide rail 214 and base plate 30 are separate structures. The guide rail 214 is fixedly connected to the base plate 30 via a screw and nut assembly, which facilitates installation and removal of the guide rail 214 and base plate 30. Alternatively, the base plate 30 may have a concave groove formed on one side facing the lower pressing plate 210, which forms the guide rail 214.

[0056] In one embodiment, the movable clamping member 2 further includes a connecting plate 211, each of which is fixedly connected to the two lower pressing plates 210 at both ends. The connecting plate 211 is connected to the screw adjustment assembly. The connecting plate 211 is disposed at one end of the lower pressing plate 210 near the screw adjustment assembly and, together with the two lower pressing plates 210, forms a clamping space. The connecting plate 211 and the two lower pressing plates 210 form an integral movable member. The screw adjustment assembly acts on the connecting plate 211 and drives the two lower pressing plates 210 to move relative to the base plate 30.

[0057] The screw adjustment assembly may include a tightening bolt 225, a pulsator handwheel 224 and a screw rod 221. The pulsator handwheel 224 and the screw rod 221 are fixed by the tightening bolt 225. The connecting plate 211 is rotatably connected to the pulsator handwheel 224 through the screw rod 221. A bearing seat fixing block 201 is fixedly provided on the base plate 3. The bearing seat fixing block 201 is provided between the pulsator handwheel 224 and the connecting plate 211. The pulsator handwheel 224 is rotatably connected to the bearing seat fixing block 201. A nut 223 is provided between the pulsator handwheel 224 and the bearing seat fixing block 201.

[0058] During the rotation of the pulsator handwheel 224, the connecting plate 211 drives the two lower pressure plates to move. The pulsator handwheel 224 is fixed to the screw rod 221. Rotating the pulsator handwheel 224 drives the screw rod 221. The rotational motion of the screw rod 221 and the flange nut 220 engage with each other through the threads between the two, fixing the screw rod 221 to the bearing seat 222. The purpose is to reduce the friction generated by the screw rod and the connecting plate 211 when the screw rod rotates, and at the same time convert the rotation angle into linear motion, and simultaneously drive the lower pressure plate 210 to move along its length direction through the connecting plate 211. When the impeller handwheel 224 rotates clockwise (or counterclockwise), the screw drives the connecting plate 211 to move in the direction away from the impeller handwheel 224, the lower pressure plate 210 moves along its length direction relative to the substrate 30, and the panel fixing frame 1 moves downward in the thickness direction relative to the substrate 30, and the panel to be tested is gradually tightened; when the impeller handwheel 224 rotates counterclockwise (or clockwise), the screw drives the connecting plate 211 to move in the direction close to the impeller handwheel 224, the lower pressure plate 210 moves along its length direction relative to the substrate 30, and the panel fixing frame 1 moves up in the thickness direction relative to the substrate 30, thereby realizing the lifting and pulling out of the panel to be tested.

[0059] In an optional embodiment, a first limiting groove 216 and a second limiting groove 217 are provided on the lower pressing plate 210; and a limiting protrusion 13 is provided on the panel fixing frame 1. The limiting protrusion is used to cooperate with the first limiting groove 216 or the second limiting groove 217 in a limiting manner. Specifically, the first limiting groove 216 is a groove away from the pulsator handwheel 224, and the second limiting groove 217 is a groove close to the pulsator handwheel 224. When the panel to be tested is in a locked state, the limiting protrusion 13 is located in the first limiting groove 216; when the panel to be tested is in a pulled-out state, the limiting protrusion 13 is located in the second limiting groove 217. During the rotation of the pulsator handwheel 224, the limiting protrusion 13 moves from one limiting groove to another. In this way, damage to the device caused by excessive rotation of the pulsator handwheel 224 can be avoided. At the same time, an arrow is added to the pulsator handwheel 224 to point to the scale of the bearing seat fixing block 201. The purpose is that when different connectors need to be replaced, the connector stroke will be different, which makes it convenient to observe the pressing of the connector during use. When the male and female connectors of the connector are offset during the pressing process, the pulsator handwheel 224 can be rotated in the opposite direction to push out the device board to be tested, preventing the connector pins from being deformed or broken, and reducing the maintenance of the device board to be tested. In order to adapt to different connectors, the downward force will also be different. Therefore, the diameter of the pulsator handwheel 224 can also be selected; when the number of connectors on the panel to be tested increases, a handwheel with a larger diameter can be selected to increase the torque in the direction of its force application to save effort.

[0060] The clamping device for an integrated circuit tester provided in an embodiment of the present application includes a panel fixing frame 1 and a clamping platform, the clamping platform including a base plate 3 and a movable clamping member. After the panel fixing frame 1 is fixedly installed with the panel to be tested, the panel fixing frame 1 with the panel to be tested fixed thereon is clamped in the movable clamping member. Cam follower bearings 11 are provided on both sides of the panel fixing frame. The movable clamping member includes two lower pressing plates 210 and a screw adjustment assembly. The two lower pressing plates 210 are each provided with a guide groove 215 on opposite sides. The guide groove 215 is tilted along the length direction of the lower pressing plate. When the panel fixing frame 1 is installed in the clamping space, the cam follower bearing 11 of the panel fixing frame 215 is located in the guide groove 215 and slides with the guide groove 215. When the screw adjustment assembly drives the two lower pressing plates 210 to move relative to the base plate 3 along the length direction of the lower pressing plates 210, the cam follower bearing 11 slides in the guide groove 215 to switch the panel to be tested between the locked and pulled-out states. Since the guide groove 215 is an oblique groove, that is, it extends along the length direction of the lower pressing plate and also extends along the thickness direction of the lower pressing plate 210, when the screw adjustment assembly drives the two lower pressing plates to move along the length direction of the lower pressing plate relative to the base plate 3, the panel fixing frame 1 on which the panel to be tested is installed moves in the thickness direction relative to the clamping table, which can realize the compression and extraction of the panel to be tested.

[0061] The clamping device for an integrated circuit tester improved by the embodiment of the present application is provided with a screw adjustment assembly. The rotating impeller handwheel 224 is fixedly connected to the screw rod 221 by a tightening bolt 225, which drives the screw rod 221 and then drives the lower pressure plate to move in its length direction, thereby driving the panel fixing frame 1 of the panel to be tested to move in the thickness direction relative to the clamping table, thereby achieving the compression and extraction of the panel to be tested. The structural design is simple and easy to operate. At the same time, the cooperation between the limit groove and the limit protrusion 13 can avoid damage to the device caused by excessive rotation of the impeller handwheel 224, while meeting the requirements of clamping the device board to be tested during testing and facilitating extraction to replace the device board to be tested, thereby improving operational safety and test reliability.

[0062] It is worth noting that, unless otherwise directly stated, all features disclosed in this specification (including any attached claims, abstracts and drawings) may be replaced by alternative features for achieving the same, equivalent or similar purposes. Therefore, unless otherwise explicitly stated, each feature claimed is merely an example of a group of equivalent or similar features. Where used, further, preferably, further and more preferably are a simple beginning for elaborating on another embodiment based on the aforementioned embodiment, and the content of the further, preferably, further or more preferably followed by the aforementioned embodiment constitutes a complete composition of another embodiment. Several further, preferably, further or more preferably settings following the same embodiment can be arbitrarily combined to form another embodiment.

[0063] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended to be illustrative only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A clamping device suitable for an integrated circuit tester, characterized in that: The clamping device comprises: A panel fixing frame (1) is used for fixing and mounting the panel to be tested, and cam follower bearings (11) are provided on both sides of the panel fixing frame (1); A clamping platform, the clamping platform comprising a base plate (3) and a movable clamping member (2), the movable clamping member (2) being arranged on one side of the base plate, the movable clamping member (2) comprising two lower pressing plates (210) and a screw adjustment assembly; The two lower pressing plates (210) are arranged on the base plate (3) relative to each other to form a clamping space, and the two lower pressing plates (210) are provided with a guide groove (215) on one side opposite to the other, and the guide groove (215) is arranged obliquely along the length direction of the lower pressing plates. When the panel fixing frame (1) is installed in the clamping space, the cam follower bearing (11) of the panel fixing frame (1) is located in the guide groove (215) and is slidably matched with the guide groove (215); When the screw adjustment assembly drives the two lower pressing plates (210) to move relative to the base plate (3) along the length direction of the lower pressing plates, the cam follower bearing (11) slides in the guide groove (215) to switch the panel to be tested between a locked state and a pulled-out state; The movable clamping member (2) further comprises a connecting plate (211), both ends of the connecting plate (211) being fixedly connected to the two lower pressing plates (210), the connecting plate (211) being connected to the screw adjusting assembly, the connecting plate (211) being arranged at one end of the lower pressing plate (210) close to the screw adjusting assembly and forming a clamping space together with the two lower pressing plates (210); The screw adjustment assembly comprises a pulsator handwheel (224) and a screw rod (221); the connecting plate (211) is rotationally connected to the pulsator handwheel (224) via the screw rod (221); during the rotation of the pulsator handwheel (224), the connecting plate (211) drives the two lower pressing plates to move; A bearing seat fixing block (201) is fixedly provided on the base plate (3), the bearing seat fixing block (201) is provided between the impeller handwheel (224) and the connecting plate (211), and the impeller handwheel (224) is rotatably connected to the bearing seat fixing block (201); The lower pressing plate (210) is provided with a first limiting groove (216) and a second limiting groove (217); the panel fixing frame (1) is provided with a limiting protrusion (13); When the panel to be tested is in the locked state, the limiting protrusion (13) is located in the first limiting groove (216); when the panel to be tested is in the pulled-out state, the limiting protrusion (13) is located in the second limiting groove (217).

2. The clamping device according to claim 1, characterized in that A positioning protrusion (20) is provided on the substrate (30), and a positioning hole (12) is provided on the panel fixing frame (1). When the panel fixing frame (1) is installed in the clamping space, the positioning protrusion (20) is located in the positioning hole (12) to limit the position of the panel fixing frame (1) on the plane where the substrate (30) is located.

3. The clamping device according to claim 1, characterized in that A slider (213) is fixedly connected to one side of the lower pressing plate (210) facing the base plate (30), and a guide rail (214) is provided on one side of the base plate (30) facing the lower pressing plate (210). The guide rail extends along the length direction of the lower pressing plate, and the slider (213) is slidably engaged with the guide rail (214).

4. The clamping device according to claim 3, characterized in that The slider (213) is fixedly connected to the lower pressing plate (210) via a screw-nut assembly, or the slider (213) and the lower pressing plate (210) are integrally formed.

5. The clamping device according to claim 3, characterized in that: The guide rail (214) is fixedly connected to the base plate (30) via a screw and nut assembly, or a strip groove is provided on the base plate (30) to form the guide rail (214).

6. The clamping device according to claim 1, characterized in that A plurality of cam follower bearings (11) are provided on both sides of the panel fixing frame (1), a plurality of guide grooves (215) are provided on each of the lower pressing plates (210), and the plurality of cam follower bearings (11) and the plurality of guide grooves (215) correspond one to one.

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