An automatic cable disconnection device for laptop testing

Abstract

This invention relates to the field of laptop testing technology and discloses an automatic plug-in disconnect device for laptop testing, including a main unit; an automatic plug-in unit, which includes a plug-in assembly, the plug-in assembly including a pneumatic clamp, a clamping plate on the output end of the pneumatic clamp, and clamping blocks respectively mounted on two relatively movable ends of the clamping plate; and a positioning unit, disposed on the clamping blocks, for mechanically positioning the plug during the clamping process, so that the plug can be accurately inserted or removed relative to the interface on the laptop. The positioning unit of this invention can synchronously convert the opening and closing motion of the clamping blocks into the centering and positioning motion of two sets of positioning plates. Before or simultaneously with clamping the plug, the positioning plates first contact the plug and mechanically center it, ensuring that the plug is accurately positioned at the clamping center, thereby fundamentally solving the problem of plug-in disconnection stress caused by plug position deviation.

Description

Technical Field

[0001] This invention relates to the field of notebook computer testing technology, and more specifically, to an automatic disconnection device for notebook computer testing. Background Technology

[0002] In the manufacturing process of laptops, functional testing of finished or semi-finished products is a crucial step in ensuring product quality. The testing process typically involves inserting various external device cables, such as power cords, USB data cables, and video signal cables, into corresponding ports on the side of the laptop for testing. After testing, these cables must be removed from the laptop one by one so that it can proceed to the next process. Existing automated cable removal equipment usually includes a conveying and positioning mechanism and multi-point robotic arms or pneumatic grippers that, through pre-programmed path movements, hold the plugs and pull them out in a straight line.

[0003] In automated wire pulling operations, the long-term reciprocating motion of the equipment's axes generates cumulative kinematic chain errors. Coupled with factors such as fluctuations in the repeatability of the feeding tray's positioning accuracy, manufacturing tolerances of the laptop casing and interfaces, and assembly clearances of the cable plugs, multi-directional coupling misalignment occurs between the actual position of the plug and its theoretical preset coordinates. Specifically, this manifests as X / Y translational deviations perpendicular to the wire pulling direction and angular deflections around the Z-axis, i.e., the perpendicularity deviation of the plug axis relative to the wire pulling direction. When the cumulative offset exceeds the tolerance margin of the wire pulling assembly's grippers, directional misalignment will occur between the grippers and the plug, resulting in eccentric clamping force, lateral force on the plug, abnormally increased wire pulling resistance, and interface wear, affecting laptop inspection. Summary of the Invention

[0004] This invention provides an automatic cable disconnection device for laptop testing, which solves the technical problem in related technologies where the long-term reciprocating operation of the device's motion axis will cause cumulative motion chain errors, resulting in directional misalignment between the gripper and the plug, causing eccentric clamping force, lateral force on the plug, abnormally increased cable disconnection resistance, and interface wear, thus affecting laptop testing.

[0005] This invention provides an automatic plug-in disconnect device for laptop testing, comprising a main unit; a controller, installed on the main unit, for controlling the operation of the device; a transport unit, disposed inside the main unit, for transporting and holding the laptop in a predetermined working position; an automatic plug-in unit, comprising a plug-in assembly, the plug-in assembly including a pneumatic clamp, the output end of the pneumatic clamp having a clamping disk, and two relatively movable ends on the clamping disk each having a clamping block mounted thereon, the pneumatic clamp clamping or releasing the plug by driving the two clamping blocks closer or further apart; and a positioning unit, disposed on the clamping blocks, for mechanically positioning the plug during the clamping process, so that the plug can be accurately inserted or removed relative to the interface on the laptop.

[0006] As a further optimization of the present invention, the positioning unit includes two sets of positioning plates disposed on opposite sides of the two sets of clamping blocks; the internal bearings of the clamping blocks are connected to a connecting shaft, a gear is mounted on the connecting shaft, racks are meshed on both sides of the gear, and positioning frames are connected to the ends of the two racks that are far apart from each other. The positioning frames are slidably connected to the positioning plates through the connecting frames, thereby converting the opening and closing motion of the clamping blocks into the synchronous centering and positioning motion of the two positioning plates facing each other or moving away from each other.

[0007] As a further optimization of the present invention, the side of the positioning plate that contacts the plug is configured as an inclined guide surface, which guides the plug to slide toward a preset clamping center position when it contacts the plug.

[0008] As a further optimization of the present invention, each of the two sets of positioning plates supports multiple sets of rollers on the opposite side to convert the sliding friction with the plug into rolling friction.

[0009] As a further optimization of the present invention, the positioning plate is provided with a sliding groove, a limiting rod is fixed inside the sliding groove, a limiting sleeve is slidably sleeved on the outside of the limiting rod, a first spring is installed between the limiting sleeve and the end of the sliding groove, and the limiting sleeve is fixedly connected to the connecting frame, so that the positioning plate can generate an elastic floating displacement relative to the connecting frame when subjected to an asymmetrical force from the plug, so as to compensate for the positional deviation of the plug.

[0010] As a further optimization of the present invention, the clamping block is further provided with a correction unit, which is used to apply an attitude correction force to the plug before the plug is clamped, so as to eliminate the tilt deviation of the plug.

[0011] As a further optimization of the present invention, the correction unit includes a fixed frame fixed inside the clamping block, a sliding shaft slidably passing through the fixed frame, a connecting seat fixed on the sliding shaft, and a swing arm rotatably connected to the connecting seat via a rotating shaft; both ends of the swing arm are provided with sliding sleeves, and a correction rod is slidably inserted into the upper and lower ends of the inner cavity of each sliding sleeve; a third spring is installed between the correction rod and the sliding sleeve to allow the correction rod to elastically extend and retract along the axial direction.

[0012] As a further optimization of the present invention, a second spring is sleeved on the sliding shaft, and the two ends of the second spring abut against the fixed frame and the connecting seat respectively, so that the swing arm can be elastically reset to the central position.

[0013] As a further optimization of the present invention, both ends of the swing arm are provided with waist-shaped grooves, and a movable rod is slidably fitted in the waist-shaped grooves. The movable rod is fixedly connected to the correction rod, so that the correction rod can adaptively move along the length direction of the swing arm when it is compressed.

[0014] As a further optimization of the present invention, the two sets of correction rods away from the swing arm pass through the clamping block and are equipped with correction plates, which are used to directly contact and push against the plug to implement attitude correction.

[0015] The beneficial effects of this invention are as follows: The positioning unit of this invention can synchronously convert the opening and closing motion of the clamping block into the centering and positioning motion of two sets of positioning plates. Before or simultaneously with clamping the plug, the positioning plates first contact the plug and mechanically center it, ensuring that the plug is accurately positioned at the clamping center, thereby fundamentally solving the problem of wire pulling stress caused by plug position deviation. Furthermore, by setting a correction unit as an independent pre-processing step before the clamping action, and by setting a correction plate with elastic reset capability and multi-degree-of-freedom adaptive capability, a gentle attitude correction force is applied to the plug at the moment of contact, eliminating attitude deviations such as tilting and swaying of the plug in advance, creating ideal preconditions for the subsequent accurate clamping and pulling of the positioning unit. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the internal three-dimensional structure of the present invention; Figure 3 This is a three-dimensional structural diagram showing the positional relationship between the transport unit and the notebook of the present invention; Figure 4 This is a three-dimensional structural diagram illustrating the positional relationship between the feeding tray and the notebook of the present invention; Figure 5 This is a three-dimensional structural diagram of the automatic wire disconnection unit of the present invention; Figure 6 This is a three-dimensional structural diagram of the wire-pulling assembly of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the clamping block of the present invention; Figure 8 This is a three-dimensional cross-sectional view of the clamping block of the present invention; Figure 9 This is a three-dimensional structural diagram of the positioning unit of the present invention; Figure 10 This is a partial cross-sectional view of the positioning unit of the present invention; Figure 11 This is a three-dimensional structural diagram of the correction unit of the present invention; Figure 12 This is a cross-sectional structural diagram of the correction unit of the present invention.

[0017] In the diagram: 100, main unit; 200, controller; 300, transport unit; 310, belt conveyor; 320, feeding pallet; 330, gripper; 400, notebook computer; 500, automatic wire pulling unit; 510, sliding support platform; 520, gantry frame; 530, sliding frame; 540, wire pulling assembly; 541, pneumatic clamp; 542, clamping plate; 543, clamping block; 600, positioning unit; 610, positioning plate; 620, connecting shaft; 630, gear; 640, rack. 650, Positioning frame; 660, Connecting frame; 670, Roller; 680, Sliding groove; 690, Limiting rod; 6100, Limiting sleeve; 6110, First spring; 6120, Guide rod; 6130, Guide sleeve; 700, Correction unit; 710, Fixing frame; 720, Sliding shaft; 730, Connecting seat; 740, Second spring; 750, Swing arm; 760, Sliding sleeve; 770, Correcting rod; 780, Third spring; 790, Waist-shaped groove; 7100, Movable rod; 7110, Correcting plate. Detailed Implementation

[0018] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0019] According to the appendix Figure 1 To be continued Figure 6As shown, this embodiment provides an automatic cable disconnection device for testing a laptop 400. This device is used to disconnect the cable plugs from the laptop 400, improving production line testing efficiency and yield. It includes a main unit 100 and a controller 200 installed on it. The main unit 100 integrates a transport unit 300 and an automatic cable disconnection unit 500 for performing core operations. The controller 200 is equipped with a preset program that is responsible for scheduling and controlling the transport unit 300, the automatic cable disconnection unit 500, and their auxiliary components to coordinate their actions according to a predetermined sequence and logic.

[0020] The transport unit 300 is used to automate the feeding and precise positioning of the laptop 400. It is located within the working area of ​​the main unit 100 and includes a belt conveyor 310 as the driving device, and a feeding tray 320 carrying the laptop 400. The belt conveyor 310 is driven by a servo motor and can precisely transport and hold the feeding tray 320 in a predetermined working position. To prevent the laptop 400 from moving during transport and cable removal, the feeding tray 320 is equipped with a clamp 330 for securing the laptop 400. This clamp 330 can be a pneumatic or electric lateral pusher that securely positions the laptop 400 on the tray from both sides or four corners, thus unifying the interface positions on the laptop 400 within a controllable spatial coordinate range and providing a reference for subsequent automated operations.

[0021] The belt conveyor 310 is equipped with Z-axis drive mechanisms at both ends to control the feeding tray 320 to move up and down, thereby cooperating with the subsequent insertion and removal movements of the X and Y axes.

[0022] The automatic wire pulling unit 500 is the core actuator for performing the insertion and pulling actions. It includes sliding support platforms 510 installed on both sides of the working area inside the main unit 100. The sliding support platforms 510 are equipped with high-precision linear guide rails and drive screws extending along the first horizontal direction, i.e., the X-axis. A gantry frame 520 spans across the two sliding support platforms 510, and its two ends are fixedly connected to the guide rail sliders and screw nuts, so that it can move smoothly back and forth inside the main unit 100 along the X-axis direction under the drive of the motor.

[0023] On the crossbeam of the gantry 520, a guide rail and a lead screw mechanism extending along the second horizontal direction, namely the Y-axis, are also provided. A sliding frame 530 is installed on it, so that the sliding frame 530 can move left and right along the crossbeam in the Y-axis direction. Through the two-dimensional linkage between the gantry 520 and the sliding frame 530, precise positioning at any coordinate in the plane can be achieved.

[0024] The cable unplugging assembly 540, as the final execution end, is mounted on the sliding bracket 530. Through the two-dimensional motion provided by the gantry 520 and the sliding bracket 530, the cable unplugging assembly 540 can be precisely driven to a specific position on the notebook 400 directly above the cable plug and perform insertion or unplugging actions.

[0025] For this purpose, the wire pulling assembly 540 includes a pneumatic clamp 541 fixedly mounted on the sliding frame 530. The output end of the pneumatic clamp 541 is provided with a clamping disk 542. The clamping disk 542 has two sets of moving ends driven by cylinders and capable of moving relatively parallel. Each moving end is fixedly mounted with a clamping block 543.

[0026] When the controller 200 issues a clamping command, the piston inside the pneumatic clamp 541 moves, driving the two moving ends and the clamping blocks 543 on them to move closer to each other, thereby clamping the cable plug located between them; conversely, when the two clamping blocks 543 move away from each other, the plug is released.

[0027] According to the appendix Figure 7 To be continued Figure 10 As shown, the present invention provides a positioning unit 600 on the clamping block 543. The positioning unit 600 is used to physically align the cable plug before the clamping block 543 fully clamps it, forcibly guiding the plug with positional deviation to the center position of the clamping claw, ensuring uniform clamping force and that the plug direction is consistent with the cable pulling direction, thereby enabling precise insertion or removal relative to the interface on the laptop 400.

[0028] Specifically, the positioning unit 600 includes two sets of positioning plates 610 disposed on opposite sides of the two sets of clamping blocks 543. The two sets of positioning plates 610 are components that directly contact the plug and perform positioning. To achieve synchronous linkage between the clamping action and the positioning action, the connecting shaft 620 is rotatably connected to the housing of the clamping block 543 via bearings. A micro motor is mounted on the clamping block 543. The output shaft of the motor is coaxially and fixedly connected to one end of the connecting shaft 620. A gear 630 is fixedly mounted on the connecting shaft 620. On both sides of the gear 630, a parallel rack 640 with opposite directions of movement is meshed. A positioning frame 650 is fixedly connected to the ends of each rack 640 that are far apart from each other. The positioning frame 650 extends out of the clamping block 543 and is slidably connected to the positioning plate 610 via a connecting frame 660.

[0029] It is important to understand that when the motor drives the connecting shaft 620 to rotate the gear 630, the two meshing racks 640 will drive the positioning frames 650 at their respective ends to move synchronously in opposite directions or out of line. This movement is transmitted to the two sets of positioning plates 610 through the connecting frame 660, thereby realizing the synchronous conversion of the opening and closing movement of the clamping block 543 into the centering and positioning movement of the two sets of positioning plates 610.

[0030] During operation, the motor is started before the clamping block 543 closes and clamps, causing the positioning plate 610 to close first, thus centering and clamping the plug; alternatively, the positioning plate 610 can be activated simultaneously with the closing of the clamping block 543. This design achieves mechanical coupling between the centering and clamping actions, resulting in a fast response and simple control.

[0031] To reduce sensitivity to initial position deviations, the side of the positioning plate 610 that contacts the plug is configured as an inclined guide surface, preferably V-shaped or flared.

[0032] When the two sets of positioning plates 610 close towards each other, the two inclined guide surfaces first contact the side wall of the plug. If the plug is positioned to the left, the inclined surface on the left will exert a rightward pushing force on it; if it is positioned to the right, the opposite will be true. In this way, during the closing process, the plug is smoothly guided to slide towards the preset clamping center position defined by the final closed space of the two positioning plates 610, thus playing a physical guiding role.

[0033] Furthermore, the housing of the clamping block 543 is provided with a movable groove that accommodates the connecting frame 660 and allows it to slide linearly along the path. The connecting frame 660 passes through this movable groove to connect the internal positioning frame 650 and the external positioning plate 610. The movable groove also serves as a linear guide to ensure the smooth movement of the positioning plate 610.

[0034] Furthermore, in order to transform the sliding friction that may occur when the positioning plate 610 contacts the plug into rolling friction, thereby protecting the plug housing and reducing the correction resistance, multiple sets of rollers 670 are supported on the opposite side of the two sets of positioning plates 610. The axis of the rollers 670 is perpendicular to the clamping surface. When the positioning plate 610 pushes the plug laterally for correction, the rollers 670 form rolling contact with the plug surface, resulting in minimal friction and a smoother correction process.

[0035] In this embodiment, a sliding groove 680 is provided on the body of the positioning plate 610 along the vertical direction of its opening and closing direction. A limiting rod 690 is fixed inside the sliding groove 680. The axial direction of the limiting rod 690 is consistent with the extension direction of the sliding groove 680. A limiting sleeve 6100 is slidably sleeved on the outside of the limiting rod 690. A first spring 6110 is installed between the limiting sleeve 6100 and one end of the sliding groove 680. The first spring 6110 is preferably a rectangular spring, which is sleeved on the limiting rod 690. One end of the spring abuts against the inner wall of the sliding groove 680, and the other end abuts against the end face of the limiting sleeve 6100. The limiting sleeve 6100 is fixedly connected to the connecting frame 660.

[0036] It should be noted that, under normal conditions, due to the preload of the first spring 6110, the limiting sleeve 6100 is pushed to the other end of the sliding groove 680, so that the positioning plate 610 is in a certain initial position relative to the connecting frame 660.

[0037] During the clamping process, when two sets of positioning plates 610 clamp a plug with an inclined or asymmetrical shape, the plug will make asymmetrical contact with a roller 670 or inclined guide surface of the positioning plate 610. The asymmetrical contact force will force one side of the positioning plate 610 to produce a slight displacement tendency.

[0038] At this time, the force will compress or stretch the first spring 6110, causing the positioning plate 610 as a whole to produce an elastic floating displacement relative to the connecting frame 660, which is equivalent to providing a local adaptive compensation for the positional deviation of the plug.

[0039] Once the clamping action is completed or the external force is removed, the positioning plate 610 automatically returns to its original centered position under the elastic force of the first spring 6110. This design greatly enhances the equipment's adaptability to different batches and small deformation plugs, as well as its operational safety.

[0040] Furthermore, parallel guide rods 6120 are fixed on both sides inside the clamping block 543. Two sets of guide sleeves 6130 are slidably sleeved on each guide rod 6120. Each set of guide sleeves 6130 is fixedly connected to the side wing of a corresponding positioning frame 650. The guide rods 6120 and guide sleeves 6130 form a high-precision linear motion pair, which strictly constrains the positioning frame 650 and its connected positioning plate 610 to move only in a predetermined straight line direction. This effectively prevents movement deviation that may be caused by the meshing backlash of the gears 630 and rack 640, and ensures the accuracy of centering and positioning.

[0041] According to the appendix Figure 8 Appendix Figure 11 and attached Figure 12As shown, before the positioning unit 600 performs mechanical positioning on the plug, the correction unit 700 performs a pre-correction process on the plug, which is specifically used to eliminate possible tilt deviations of the plug, i.e., the posture problem that its axis is not perpendicular to the clamping direction.

[0042] Specifically, the correction unit 700 is integrated inside the clamping block 543 and extends partially out of the front end of the clamping block 543. Its specific structure includes a fixing frame 710, which is fixedly connected to the inner wall of the clamping block 543. A sliding shaft 720 is slidably inserted in the light hole at the center of the fixing frame 710. The axial direction of the sliding shaft 720 is approximately perpendicular to the clamping direction, i.e., the Z-axis direction.

[0043] A connecting seat 730 is fixed on the sliding shaft 720. The connecting seat 730 extends outward, and its front end is rotatably connected to a swing arm 750 through a rotating shaft, so that the swing arm 750 can swing around the rotating shaft at a certain angle in the horizontal plane. A second spring 740 is sleeved on the sliding shaft 720. The two ends of the second spring 740 abut against the lower end face of the fixed frame 710 and the upper end face of the connecting seat 730, respectively. This structure makes the swing arm 750, the connecting seat 730 and the sliding shaft 720 form a sub-assembly, which can float elastically up and down along the axial direction of the sliding shaft 720 as a whole, and can be pushed to an initial position centered in the axial direction by the second spring 740 when not under force.

[0044] The swing arm 750 is a long strip-shaped component with symmetrical sliding sleeves 760 at both ends. Each sliding sleeve 760 is a cylindrical structure, and a straightening rod 770 is slidably inserted into the upper and lower ends of its inner cavity. A third spring 780 is installed between the upper and lower straightening rods 770 and the sliding sleeves 760. The two ends of the third spring 780 are fixedly connected to the sliding sleeves 760 and the straightening rods 770 respectively, thereby allowing the upper and lower straightening rods 770 to independently elastically extend and retract along their own axial direction.

[0045] To provide a wider adaptive range, waist-shaped grooves 790 are formed on the side walls at both ends of the swing arm 750. The length direction of the waist-shaped grooves 790 is consistent with the length direction of the swing arm 750. A movable rod 7100 is slidably fitted in each waist-shaped groove 790, and the movable rod 7100 is fixedly connected to its corresponding correcting rod 770. This design means that when the correcting rod 770 is compressed, in addition to its own elastic expansion and contraction, it can also achieve adaptive misalignment along the length direction of the swing arm 750 through the sliding of the movable rod 7100 along the waist-shaped groove 790.

[0046] The ends of the two sets of correction rods 770, which are far from the swing arm 750, pass through the clearance holes opened on the housing of the clamping block 543 and are jointly mounted on a correction plate 7110. The correction plate 7110 can also be designed as a guide slope or have a soft material on the side facing the plug.

[0047] When the automatic cable disconnection unit 500 moves toward the cable plug, the correction plate 7110 contacts the plug before the positioning plate 610. If the plug is tilted to the left, the left correction plate 7110 will contact the upper or lower part of the left side wall of the plug first. This asymmetrical contact force will force the correction rod 770 on that side to compress the third spring 780 to extend or retract, or push the swing arm 750 to rotate around the central pivot. At the same time, the connecting seat 730 and the sliding shaft 720 may also make axial fine adjustments under the action of the second spring 740. Among them, the multiple floating degrees of freedom provided by the second spring 740, the third spring 780, the pivot and the waist-shaped groove 790 enable the entire correction unit 700 to wrap around and gently push the plug in a way similar to a soft hand, applying a reverse posture correction torque to straighten it to the ideal posture, thus providing positioning assistance for the subsequent precise centering and clamping of the positioning unit 600.

[0048] According to the appendix Figure 1 To be continued Figure 12 As shown, the working principle is as follows: First, the operator or the robotic arm at the previous station places the laptop 400 to be inspected on the feeding tray 320, and the gripper 330 fixes it in place. The controller 200 starts the belt conveyor 310 to operate, accurately transporting the feeding tray 320 carrying the laptop 400 to the preset wire pulling station and then stopping.

[0049] Subsequently, the automatic cable unplugging unit 500 is activated. The gantry 520 moves along the X-axis, and the sliding bracket 530 moves along the Y-axis, causing the cable unplugging assembly 540 to move to a predetermined coordinate position above the first cable plug to be unplugged on the laptop 400. At this time, the plug may have slight positional deviations in the X / Y directions and varying degrees of tilt.

[0050] Next, driven by the Z-axis drive mechanism, the feeding tray 320 is driven to move up and down, and the automatic wire pulling unit 500 moves in the X / Y direction. During this process, the correction plate 7110 of the correction unit 700 set at the front end of the clamping block 543 first contacts the plug.

[0051] If the plug is not in the correct position, the correction plate 7110, under the combined action of the second spring 740, the third spring 780, the pivot of the swing arm 750, and the waist-shaped groove 790, adaptively adjusts its spatial position and angle, applies a gentle corrective force to the plug, and initially eliminates its tilt deviation.

[0052] Next, driven by the Z-axis drive mechanism, the feeding tray 320 moves up and down. After the clamping block 543 reaches the clamping height, the pneumatic clamp 541 is activated, driving the two clamping blocks 543 to slowly close relative to each other. Before the clamping blocks 543 fully clamp the plug, the positioning unit 600 integrated inside can be driven by an independent motor to first drive the two sets of positioning plates 610 to move towards each other. The inclined guide surface and roller 670 on the positioning plate 610 will contact and guide the plug to slide towards the precise clamping center, compensating for the remaining X / Y direction position deviation.

[0053] Finally, after the positioning plate 610 centers and holds the plug, the clamping block 543 continues to close and provides the main clamping force, achieving precise and stress-free clamping. Subsequently, the drive cable removal assembly 540 removes the cable plug from the interface of the laptop 400 without damage. After one plug is removed, the device automatically moves to the next plug coordinate, repeating the operation until all cable removal tasks are completed.

[0054] The embodiments of this specific implementation have been described above. However, this embodiment is not limited to the specific implementation described above. The specific implementation described above is merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of this embodiment, all of which are within the protection scope of this embodiment.

Claims

1. An automatic cable disconnection device for laptop testing, characterized in that, include: Device host; A controller, installed on the host of the device, is used to control the operation of the device; A transport unit, located inside the main unit of the device, is used to transport and hold the laptop at a predetermined work position; An automatic cable disconnection unit includes a cable disconnection assembly, which includes a pneumatic clamp. The output end of the pneumatic clamp is provided with a clamping plate, and two relatively movable ends on the clamping plate are respectively equipped with clamping blocks. The pneumatic clamp achieves clamping or releasing of the plug by driving the two clamping blocks to move closer or further apart from each other. A positioning unit is disposed on the clamping block and is used to mechanically position the plug during the clamping process, so that the plug can be accurately inserted or removed relative to the interface on the laptop.

2. The automatic disconnection device for laptop testing according to claim 1, characterized in that, The positioning unit includes two sets of positioning plates disposed on opposite sides of the two sets of clamping blocks; the internal bearings of the clamping blocks are connected to a connecting shaft, a gear is mounted on the connecting shaft, racks are meshed on both sides of the gear, and positioning frames are connected to the ends of the two racks that are far apart from each other. The positioning frames are slidably connected to the positioning plates through the connecting frames, thereby converting the opening and closing motion of the clamping blocks into the synchronous centering and positioning motion of the two positioning plates facing each other or moving away from each other.

3. The automatic disconnection device for laptop testing according to claim 2, characterized in that, The side of the positioning plate that contacts the plug is set as an inclined guide surface to guide the plug to slide toward a preset clamping center position when it contacts the plug.

4. The automatic disconnection device for laptop testing according to claim 2, characterized in that, Each of the two sets of positioning plates has multiple sets of rollers on its opposite side, which are used to convert the sliding friction with the plug into rolling friction.

5. The automatic disconnection device for laptop testing according to claim 2, characterized in that, The positioning plate is provided with a sliding groove, a limit rod is fixed inside the sliding groove, a limit sleeve is slidably sleeved on the outside of the limit rod, a first spring is installed between the limit sleeve and the end of the sliding groove, and the limit sleeve is fixedly connected to the connecting frame, so that the positioning plate can generate elastic floating displacement relative to the connecting frame when subjected to asymmetrical force from the plug, so as to compensate for the positional deviation of the plug.

6. The automatic disconnection device for laptop testing according to claim 1, characterized in that, The clamping block is also equipped with a correction unit, which is used to apply an attitude correction force to the plug before the plug is clamped, so as to eliminate the tilt deviation of the plug.

7. The automatic disconnection device for laptop testing according to claim 6, characterized in that, The correction unit includes a fixed frame fixed inside the clamping block, a sliding shaft slidably passing through the fixed frame, a connecting seat fixed on the sliding shaft, and a swing arm rotatably connected to the connecting seat via a rotating shaft; both ends of the swing arm are provided with sliding sleeves, and a correction rod is slidably inserted into the upper and lower ends of the inner cavity of each sliding sleeve; a third spring is installed between the correction rod and the sliding sleeve to allow the correction rod to elastically extend and retract along the axial direction.

8. The automatic disconnection device for laptop testing according to claim 7, characterized in that, A second spring is sleeved on the sliding shaft, with its two ends abutting against the fixed frame and the connecting seat respectively, so that the swing arm can elastically return to the center position.

9. The automatic disconnection device for laptop testing according to claim 7, characterized in that, Both ends of the swing arm are provided with waist-shaped grooves, and movable rods are slidably fitted in the waist-shaped grooves. The movable rods are fixedly connected to the correcting rods, so that the correcting rods can adaptively move along the length direction of the swing arm when compressed.

10. The automatic disconnection device for laptop testing according to claim 7, characterized in that, The two sets of correction rods, which are away from the swing arm, pass through the clamping block and are equipped with correction plates, which are used to directly contact and push against the plug to perform attitude correction.

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