Quick reversing mechanism for impact sample processing

Abstract

The invention belongs to the field of plate impact specimen processing, and particularly relates to an impact specimen processing quick reversing mechanism which comprises a rack platform, a transfer mechanism, a turnover mechanism and a pressing mechanism are sequentially arranged in the rack platform from right to left, and a conveying mechanism is arranged below the rack platform corresponding to each station. The transfer mechanism and the turnover mechanism can interact with the sample clamp on the conveying mechanism moving to the lower portion of the transfer mechanism and the turnover mechanism, the conveying mechanism comprises a bearing sliding rail, linear motors, a rotary receding mechanism and a lower clamp positioning plate, the bearing sliding rail is installed below the mechanism in the arrangement direction of the mechanisms, the linear motors are symmetrically arranged on the two sides of the bearing sliding rail, and the rotary receding mechanism is arranged on the lower clamp positioning plate. The rotary receding mechanisms are fixedly installed on the linear motor, and the two lower clamp positioning plates are installed on the rotary receding mechanisms on the two sides respectively. According to the invention, the circulation efficiency and the automatic processing efficiency of the impact sample among the processing stations can be greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of plate impact test specimen processing, and specifically relates to a rapid reversing mechanism for impact test specimen processing. Background Technology

[0002] In the steel production process, it is necessary to control the production process and ensure the quality of finished steel products through the inspection of steel plate samples. However, the inspection of steel plate samples requires a large amount of processing of each batch of steel of different sizes, and traditional manual processing methods can no longer meet the ever-increasing production demands.

[0003] Currently, companies have made varying degrees of improvements to the processing methods for steel plate samples, such as steel impact test specimens. The main improvement is automation, with robotic operation as the core. While this has improved the processing efficiency of impact test specimens to some extent, it mainly relies on existing processing lines and cannot automate the loading, flipping, and unloading processes. In particular, the flipping process still relies on manual or robotic arms to remove the impact test specimens and then reverse them to put them back into the fixture. This seriously affects the processing efficiency of impact test specimens. Furthermore, the dispersed arrangement of the loading, flipping, and unloading structures is not conducive to centralized automated operation, increases the operating distance of individual processes, and thus increases the operation time and reduces the overall processing efficiency.

[0004] Therefore, how to provide a rapid reversing mechanism for impact sample processing that enables efficient and orderly transfer of sample fixtures between various workstations has become a problem that needs to be considered by those skilled in the art. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention discloses a rapid reversing mechanism for impact specimen processing. By setting up an independently driveable and rotatable lower clamping positioning plate, the two positioning plates can achieve dynamic avoidance and alternating cyclic transport on the same slide rail, thereby significantly improving the flow efficiency of impact specimens between processing stations and the efficiency of automated processing.

[0006] Specifically, this application discloses the following technical solutions: A rapid reversing mechanism for impact specimen processing includes a frame platform. From right to left, a transfer mechanism, a flipping mechanism, and a clamping mechanism are sequentially arranged within the frame platform. A conveying mechanism is positioned below each workstation on the frame platform. The transfer mechanism and the flipping mechanism can interact with specimen clamps moved to the conveying mechanism below them. The conveying mechanism includes a load-bearing slide rail, a linear motor, a rotary clearance mechanism, and lower clamping positioning plates. The load-bearing slide rail is installed below each mechanism along its arrangement direction. The linear motor is symmetrically arranged on both sides of the load-bearing slide rail. The rotary clearance mechanism is fixedly mounted on the linear motor. Two lower clamping positioning plates are respectively mounted on the rotary clearance mechanisms on both sides.

[0007] Furthermore, the rotational clearance mechanism includes an upper connecting plate, a lower connecting plate, a load motor, a rotating shaft, a drive gear, a driven gear, and a rotational positioning sensor. The lower connecting plate is fixed to the output end of the linear motor, the rotating shaft is rotatably mounted on the lower connecting plate, the upper connecting plate is mounted on the bottom of the lower clamping positioning plate, both ends of the rotating shaft are fixedly connected to the upper connecting plate, the load motor is mounted on the lower connecting plate, the drive gear is mounted on the output end of the load motor, the driven gear is mounted on the rotating shaft, the drive gear meshes with the driven gear, and the rotational positioning sensor is disposed on the lower connecting plate and connected to the rotating shaft protruding from the upper connecting plate, for detecting the rotation angle of the rotating shaft.

[0008] Furthermore, the length of the lower clamp positioning plate is greater than the distance between the load-bearing slide rail and the rotating clearance mechanism, and less than the distance between the two rotating clearance mechanisms. The lower clamp positioning plate is provided with a quick-change interface for quickly mounting the sample clamp.

[0009] Furthermore, the load-bearing slide rail is U-shaped, and a guide post is rotatably provided at the top of the side wall of the load-bearing slide rail for guiding the movement of the lower clamp positioning plate. A magnetic grid ruler is provided at the bottom of the load-bearing slide rail, and a reading sensor is installed at the bottom of the lower clamp positioning plate.

[0010] Furthermore, the inner wall of the load-bearing slide rail is provided with several proximity switches. The proximity switches are located below the transfer mechanism, the flipping mechanism and the clamping mechanism, and are used for positioning the lower clamp positioning plate. The proximity switches are connected to the controller signal of each station.

[0011] Furthermore, the transfer mechanism includes a double-layer support, a first linear sliding module, and a loading clamp positioning plate. The first linear sliding module is disposed on the top of the double-layer support, and the loading clamp positioning plate is disposed on the moving end of the first linear sliding module.

[0012] Furthermore, the flipping mechanism includes a first L-shaped mounting bracket, a first driving mechanism, and an upper clamping positioning plate. The first L-shaped mounting bracket is disposed on the frame platform, the first driving mechanism is disposed on the first L-shaped mounting bracket, and the upper clamping positioning plate is disposed on the driving end of the first driving mechanism.

[0013] Furthermore, the clamping mechanism includes a second L-shaped mounting bracket, a second driving mechanism, and a clamping fixture. The second L-shaped mounting bracket is mounted on the frame platform, the second driving mechanism is mounted on the second L-shaped mounting bracket, and the clamping fixture is mounted on the driving end of the second driving mechanism.

[0014] Furthermore, it also includes a receiving tray, the bottom of which is provided with a positioning structure that cooperates with the lower clamp positioning plate, and the receiving tray is detachably mounted on the lower clamp positioning plate.

[0015] The beneficial effects of this invention are as follows: 1. This invention achieves automated circulation of sample fixtures between workstations by placing the conveying mechanism below the transfer, flipping, and pressing stations, and symmetrically arranging two lower clamping positioning plates driven by independently driven rotary clearance mechanisms on the load-bearing slide rail. Compared to the traditional approach that relies on robotic arms for long-distance transport, this application integrates the logistics conveying function inside the frame platform, enabling the sample fixtures to move quickly and accurately along the load-bearing slide rail directly below each workstation, significantly shortening the logistics distance and waiting time between processes. When one lower clamping positioning plate stops below a workstation to cooperate with the upper mechanism, the other lower clamping positioning plate can be driven to rotate to a vertical position by the rotary clearance mechanism, thereby significantly reducing its lateral space occupation and allowing it to smoothly move around the stopped positioning plate to other workstations. This structural design, which achieves dynamic clearance through rotation, effectively solves the path blockage problem caused by a single channel, enabling the two lower clamping positioning plates to efficiently and alternately perform conveying tasks along the same slide rail, significantly improving space utilization and processing cycle time.

[0016] 2. This invention achieves high-precision position feedback during the movement of the lower clamp positioning plate through the cooperation of a magnetic scale and a reading sensor. Simultaneously, proximity switches installed on the inner wall of the load-bearing slide rail are connected to the controllers at each workstation, ensuring precise stopping and triggering of the lower clamp positioning plate at each workstation. A rotary positioning sensor can detect the rotation angle of the lower clamp positioning plate in real time, ensuring its positional accuracy when switching between vertical avoidance and horizontal operation. The synergistic effect of these multiple positioning and control methods enhances the operational accuracy and control reliability of the mechanism.

[0017] 3. This invention integrates transfer, flipping, and clamping processes into a compact conveying system, allowing each workstation to operate collaboratively. The robotic arm and conveying mechanism work in parallel without waiting for each other. The two lower clamping positioning plates of the conveying mechanism can alternately carry the sample clamps for loading, flipping, clamping, and collecting processes, achieving seamless process connection and significantly improving overall automated processing efficiency. This provides a reliable overall solution for the efficient and continuous production of impact samples. Attached Figure Description

[0018] Figure 1 This is a front view of the present invention; Figure 2 This is a perspective view of the conveying mechanism of the present invention; Figure 3 This is a schematic diagram of the rotating clearance mechanism of the present invention.

[0019] The components are as follows: 1-Frame platform; 2-Load-bearing slide rail; 3-Linear motor; 4-Lower clamp positioning plate; 5-Upper connecting plate; 6-Lower connecting plate; 7-Load motor; 8-Rotating shaft; 9-Drive gear; 10-Driven gear; 11-Rotary positioning sensor; 12-Guide column; 13-Magnetic scale; 14-Reading sensor; 15-Proximity switch; 16-Double-layer bracket; 17-Linear sliding module; 18-Feeding clamp positioning plate; 19-First L-shaped mounting bracket; 20-First drive mechanism; 21-Upper clamp positioning plate; 22-Second L-shaped mounting bracket; 23-Second drive mechanism; 24-Clamping clamp; 25-Sample clamp. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1

[0022] like Figure 1-3 As shown, this embodiment discloses a rapid reversing mechanism for impact specimen processing, including a frame platform 1. From right to left, a transfer mechanism, a flipping mechanism, and a clamping mechanism are sequentially arranged within the frame platform 1. A conveying mechanism is located below each workstation on the frame platform 1. The transfer mechanism and the flipping mechanism can interact with the specimen clamp 25 moved to the conveying mechanism below them via a PLC controller. By integrating the conveying mechanism below each workstation, the automatic flow of the specimen clamp during the processing is achieved, significantly reducing the long-distance transport time for the robotic arm.

[0023] The conveying mechanism in this embodiment includes a load-bearing slide rail 2, a linear motor 3, a rotary clearance mechanism, and two lower clamping positioning plates 4. The load-bearing slide rail 2 is installed below each mechanism along its arrangement direction. The linear motor 3 is symmetrically arranged on both sides of the load-bearing slide rail 2. The rotary clearance mechanism is fixedly installed on the linear motor 3, and the two lower clamping positioning plates 4 are respectively installed on the rotary clearance mechanisms on both sides. Direct drive by a linear motor offers advantages such as fast response, high precision, and compact structure, meeting the conveying requirements of high-frequency start-stop operations.

[0024] In a preferred embodiment of the present invention, the load-bearing slide rail 2 is U-shaped, with a guide post 12 rotatably mounted on the top of its side wall for guiding the movement of the lower clamp positioning plate 4. The U-shaped structure not only provides sufficient load-bearing rigidity but also facilitates the internal arrangement of cables and air pipes, resulting in a neater overall layout. A magnetic scale 13 is installed at the bottom of the load-bearing slide rail 2, and a reading sensor 14 cooperating with the magnetic scale 13 is installed at the bottom of the lower clamp positioning plate 4 to achieve high-precision position feedback, ensuring that the positioning plate can accurately stop directly below each workstation. The inner wall of the load-bearing slide rail 2 is also equipped with several proximity switches 15, which are located directly below the transfer mechanism, the flipping mechanism, and the clamping mechanism, respectively. These switches are used for coarse positioning of the lower clamp positioning plate 4, and are connected to the controller signals of each workstation. When the positioning plate arrives, the corresponding mechanism is triggered, forming a closed-loop control.

[0025] Linear motors 3 include a first linear motor and a second linear motor arranged symmetrically. Their installation direction is the same as that of the load-bearing slide rail 2, and they can independently drive their respective lower clamping positioning plates. A rotary clearance mechanism is fixedly connected to the output end of each linear motor 3. The rotary clearance mechanism includes an upper connecting plate 5, a lower connecting plate 6, a load motor 7, a rotating shaft 8, a drive gear 9, a driven gear 10, and a rotary positioning sensor 11. The lower connecting plate 6 is fixed to the output end of the linear motor 3. The rotating shaft 8 is rotatably mounted on the lower connecting plate 6 via bearings, and both ends of the rotating shaft 8 are fixedly connected to the upper connecting plate 5, which is fixed to the bottom of the lower clamping positioning plate 4. The load motor 7 is mounted on the lower connecting plate 6, and its output end is equipped with the drive gear 9. The driven gear 10 is mounted on the rotating shaft 8 and meshes with the drive gear 9. The gear transmission method provides accurate transmission ratios and strong load-bearing capacity, ensuring the angular accuracy of the lower clamping positioning plate during rotation. A rotary positioning sensor 11 is mounted on the lower connecting plate 6 and connected to the end of the rotating shaft 8 protruding from the upper connecting plate 5, for real-time detection of the rotation angle of the rotating shaft 8. Driven by the load motor 7, the lower clamping positioning plate 4 can switch between a horizontal and a vertical state. When avoidance is required, it rotates to the vertical state to reduce the lateral space occupied, thereby realizing the staggered operation of the two positioning plates on the same slide rail and solving the problem of single-channel path blockage.

[0026] In a preferred embodiment of the present invention, the length of the lower clamp positioning plate 4 is designed to be greater than the distance between the load-bearing slide rail 2 and the rotating clearance mechanism, and less than the distance between the two rotating clearance mechanisms, ensuring that it can stably support the sample clamp 25 in a horizontal state and smoothly pass through narrow areas in a vertical rotating state. The lower clamp positioning plate 4 is provided with a quick-change interface for quickly mounting the sample clamp 25, specifically a number of zero-point locators, which are connected to a compressed air interface. The lower end face of the sample clamp 25 is provided with corresponding pull studs, thereby realizing quick installation and separation and reducing the auxiliary time for clamp replacement.

[0027] In a preferred embodiment of the present invention, the transfer mechanism includes a double-layer support 16, a first linear sliding module 17, and a loading fixture positioning plate 18. The double-layer support 16 is mounted on the frame platform 1, directly above the load-bearing slide rail 2, and the first linear sliding module 17 is mounted on its top. The first linear sliding module 17 includes a linear guide rail and a drive element (such as a rodless cylinder or electric cylinder), and the loading fixture positioning plate 18 is located at the moving end of the first linear sliding module 17. The upper surface of the loading fixture positioning plate 18 is also provided with a zero-point locator and a compressed air interface for detachably mounting the sample clamp 25 to be loaded. After the sample clamp 25 is placed in position, the first linear sliding module 17 can transport it to the picking position close to the robot arm, making it easier for the robot arm to grasp, thereby shortening the movement path of the robot arm and improving the loading efficiency.

[0028] In a preferred embodiment of the present invention, the flipping mechanism includes a first L-shaped mounting frame 19, a first drive mechanism 20, and an upper clamping positioning plate 21. The first L-shaped mounting frame 19 is vertically mounted on the frame platform 1. The first drive mechanism 20 is a vertically driven hydraulic cylinder, the cylinder body of which is fixed to the top of the first L-shaped mounting frame 19, and the piston rod extends downward and is fixedly connected to a movable pallet. The movable pallet is slidably mounted on the first L-shaped mounting frame 19 via at least one guide shaft and a linear bearing. The lower end of the guide shaft is fixed to the movable pallet, and the upper end passes through the linear bearing to ensure the stability and guiding accuracy of the vertical movement of the movable pallet and to avoid swaying during the flipping process. The lower end face of the movable pallet is provided with an upper clamping positioning plate 21, which is also provided with a zero-point locator and a compressed air interface for detachably mounting a sample clamp 25 with a pre-processed impact sample. When sample flipping is required, the conveying mechanism moves another unloaded sample clamp 25 (mounted on the lower clamp positioning plate 4) directly below the flipping mechanism. The first drive mechanism 20 drives the upper clamp positioning plate 21 and its sample clamp 25 downwards, causing the lower end of the pre-processed impact sample to enter the lower unloaded sample clamp 25. Subsequently, the upper sample clamp 25 releases, and the lower sample clamp 25 clamps, achieving rapid sample flipping. The entire process is automatically completed under PLC control without manual intervention.

[0029] In a preferred embodiment of the present invention, the clamping mechanism includes a second L-shaped mounting bracket 22, a second driving mechanism 23, and a clamping fixture 24. The second L-shaped mounting bracket 22 is fixed on the frame platform 1. The second driving mechanism 23 is also a vertically driven hydraulic cylinder, installed on the top of the second L-shaped mounting bracket 22. The clamping fixture 24 is fixedly connected to the second driving mechanism 23. The clamping fixture 24 is specifically an upper pressure plate, including a spring mounting plate, a pressure column guide plate, a spring, and a pressure column. The upper end face of the spring mounting plate is provided with a pull stud. The lower end face of the spring mounting plate is provided with a groove, and a spring is vertically arranged in the groove. The pressure column guide plate is fixed to the lower end face of the spring mounting plate, and a pressure column is slidably installed in the limiting groove inside the plate. The upper end face of the pressure column is connected to the spring, and the lower end extends out of the pressure column guide plate. When clamping is required, the second drive mechanism 23 drives the upper pressure plate to press down. Under the elastic action of the spring, the pressure column presses against the upper end face of the impact sample inside the sample holder 25, ensuring that the sample is fully in place. After this, the sample holder 25 performs a secondary clamping. The flexible buffering effect of the spring can prevent damage to the sample surface, while ensuring the uniformity of the clamping force and improving the processing accuracy.

[0030] In a preferred embodiment of the present invention, the unloading section further includes a receiving tray. The bottom of the receiving tray is provided with a positioning structure (such as a zero-point locator interface) adapted to the lower clamping positioning plate 4, and is detachably mounted on the lower clamping positioning plate 4. After the impact sample has been fully processed, the robot arm installs the receiving tray onto a lower clamping positioning plate 4, and the conveying mechanism moves it directly below the flipping mechanism. Subsequently, the robot arm removes the finished impact sample from the sample fixture 25 of the processing center and installs it onto the upper clamping positioning plate 21 of the flipping mechanism. The flipping mechanism transfers the sample from the sample fixture 25 to the receiving tray, and the robot arm transports the receiving tray to the finished product area. The detachable design of the receiving tray makes full tray replacement more convenient and improves unloading efficiency.

[0031] This mechanism achieves continuous and efficient sample processing through the alternating movement and rotation of two lower clamping positioning plates 4, in conjunction with the actions of the robotic arm and various workstations. Its workflow is as follows: Step 1: Cyclic Start-up and Loading (Mount A) The robotic arm places an empty sample fixture 25 (hereinafter referred to as "fixture A") on the loading fixture positioning plate 18 of the transfer mechanism and quickly locks it in place using a zero-point positioner. At this time, the loading fixture positioning plate 18 is located in the initial loading position of the transfer mechanism. The first linear sliding module 17 moves it to the loading and unloading position close to the robotic arm, and the robotic arm loads the impact sample to be processed into fixture A and clamps it. Subsequently, the first linear sliding module 17 brings the fixture A containing the sample back to the initial loading position. The robotic arm picks up fixture A and transfers it to the machining center for the first surface processing.

[0032] Step 2: Preparation and Execution for Flipping (After surface A is processed, transfer to surface B)

[0033] While fixture A is processing the first side, the conveying mechanism begins preparing to flip the workstation: 1. At this time, another unloaded sample fixture 25 ("fixture B") has been placed on a lower fixture positioning plate 4 (named "positioning plate P1") located in the standby area of ​​the conveying mechanism (below the transfer mechanism).

[0034] 2. After the machining center completes the machining of the first side, the robot arm takes out the fixture A (the side of the sample that has been machined) and installs it in reverse on the upper fixture positioning plate 21 of the flipping mechanism.

[0035] 3. The conveying mechanism starts and drives the positioning plate P1 (with clamp B) to move along the load-bearing slide rail 2 via the linear motor 3, and stops precisely below the tilting mechanism.

[0036] 4. The first drive mechanism 20 of the flipping mechanism presses down, causing the lower end of the sample in fixture A to enter the clamping position of fixture B. Then fixture A is released, fixture B clamps, and the sample is flipped. The first drive mechanism 20 drives fixture A to reset.

[0037] Step 3: Secondary pressing and processing (B-side processing)

[0038] 1. The conveying mechanism moves the positioning plate P1, which carries the clamp B (the sample has been flipped), to directly below the clamping mechanism.

[0039] 2. The second drive mechanism 23 of the clamping mechanism presses down directly, and the clamping fixture 24 (upper pressure plate) fixedly installed at its lower end applies elastic pressure to the sample in the fixture B, so that it is fully in place. Then the hydraulic system in the fixture B performs a secondary locking to ensure the positional accuracy of the sample.

[0040] 3. After clamping is completed, the second drive mechanism 23 resets. The robot arm picks up fixture B and transfers it to the machining center for the second side machining.

[0041] 4. At the same time, the clamp A (now unloaded) located on the clamp positioning plate 21 of the flipping mechanism is removed by the robot and placed back on the unloaded clamp position of the transfer mechanism, ready to enter the next cycle.

[0042] Step 4: Rotation and avoidance of the receiving material and the unloaded positioning plate

[0043] 1. During the second-side processing of fixture B, the robot arm installs an empty receiving pallet onto another lower fixture positioning plate 4 (“positioning plate P2”), which is located directly below the flipping mechanism.

[0044] 2. After fixture B completes the second side machining, the robot arm removes it from the machining center and installs it onto the upper fixture positioning plate 21 of the flipping mechanism.

[0045] 3. The flipping mechanism presses down, transferring the finished product sample in fixture B to the receiving tray. The robot then grabs the receiving tray full of finished products and transports it to the unloading area.

[0046] 4. At this point, in preparation for the next cycle, positioning plate P1 (currently located below the clamping mechanism and unloaded) needs to return to the waiting area. However, since the receiving tray on positioning plate P2 directly below the flipping mechanism has blocked the path, the linear motor 3 driving positioning plate P1 initiates a rotation clearance procedure: positioning plate P1 rotates 90° to a vertical position under the drive of load motor 7, reducing its lateral dimension, thus smoothly bypassing the obstacle and returning to the waiting area along the load-bearing slide rail 2. Upon arrival, positioning plate P1 rotates back to a horizontal position, waiting to receive the unloaded sample clamp 25 from the flipping mechanism.

[0047] Step 5: Repeat the process

[0048] The above process is repeated cyclically by the alternating movement and rotation of the two lower clamping positioning plates 4, achieving seamless connection between the loading, flipping, clamping, and collecting processes. The robotic arm and the conveying mechanism work together without waiting for each other, greatly improving automation efficiency.

[0049] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A rapid reversing mechanism for impact specimen processing, characterized in that: The system includes a frame platform (1), in which a transfer mechanism, a flipping mechanism and a clamping mechanism are arranged sequentially from right to left. A conveying mechanism is arranged below each workstation of the frame platform (1). The transfer mechanism and the flipping mechanism can interact with the sample fixtures on the conveying mechanism below them. The conveying mechanism includes a load-bearing slide rail (2), a linear motor (3), a rotation clearance mechanism and a lower fixture positioning plate (4). The load-bearing slide rail (2) is installed below each mechanism along the arrangement direction. The linear motor (3) is symmetrically arranged on both sides of the load-bearing slide rail (2). The rotation clearance mechanism is fixedly installed on the linear motor (3). The two lower fixture positioning plates (4) are respectively installed on the rotation clearance mechanisms on both sides.

2. The rapid reversing mechanism for impact specimen processing according to claim 1, characterized in that, The rotational clearance mechanism includes an upper connecting plate (5), a lower connecting plate (6), a load motor (7), a rotating shaft (8), a drive gear (9), a driven gear (10), and a rotational positioning sensor (11). The lower connecting plate (6) is fixed to the output end of the linear motor (3). The rotating shaft (8) is rotatably mounted on the lower connecting plate (6). The upper connecting plate (5) is mounted on the bottom of the lower clamp positioning plate (4). Both ends of the rotating shaft (8) are fixedly connected to the upper connecting plate (5). The load motor (7) is mounted on the lower connecting plate (6). The drive gear (9) is mounted on the output end of the load motor (7). The driven gear (10) is mounted on the rotating shaft (8). The drive gear (9) meshes with the driven gear (10). The rotational positioning sensor (11) is set on the lower connecting plate (6) and connected to the rotating shaft (8) protruding from the upper connecting plate (5) to monitor the rotation angle of the rotating shaft (8).

3. The rapid reversing mechanism for impact specimen processing according to claim 1, characterized in that, The length of the lower clamp positioning plate (4) is greater than the distance between the load-bearing slide rail (2) and the rotating clearance mechanism, and less than the distance between the two rotating clearance mechanisms. The lower clamp positioning plate (4) is provided with a quick-change interface for quickly mounting the sample clamp.

4. The rapid reversing mechanism for impact specimen processing according to claim 1, characterized in that, The load-bearing slide rail (2) is U-shaped. A guide post (12) is rotatably provided on the top of the side wall of the load-bearing slide rail (2) for guiding the movement of the lower clamp positioning plate (4). A magnetic grid ruler (13) is provided at the bottom of the load-bearing slide rail (2), and a reading sensor (14) is installed at the bottom of the lower clamp positioning plate (4).

5. The rapid reversing mechanism for impact specimen processing according to claim 1, characterized in that, The inner wall of the load-bearing slide rail (2) is provided with several proximity switches (15). The proximity switches (15) are located below the transfer mechanism, the flipping mechanism and the clamping mechanism, and are used for positioning the lower clamp positioning plate (4). The proximity switches (15) are connected to the controller signal of each workstation.

6. The rapid reversing mechanism for impact specimen processing according to claim 1, characterized in that, The transfer mechanism includes a double-layer support (16), a first linear sliding module (17), and a loading clamp positioning plate (18). The first linear sliding module (17) is located on the top of the double-layer support (16), and the loading clamp positioning plate (18) is located at the moving end of the first linear sliding module (17).

7. The rapid reversing mechanism for impact specimen processing according to claim 1, characterized in that, The flipping mechanism includes a first L-shaped mounting bracket (19), a first driving mechanism (20), and an upper clamp positioning plate (21). The first L-shaped mounting bracket (19) is mounted on the frame platform (1), the first driving mechanism (20) is mounted on the first L-shaped mounting bracket (19), and the upper clamp positioning plate (21) is mounted on the driving end of the first driving mechanism (20).

8. The rapid reversing mechanism for impact specimen processing according to claim 1, characterized in that, The clamping mechanism includes a second L-shaped mounting bracket (22), a second driving mechanism (23), and a clamping fixture (24). The second L-shaped mounting bracket (22) is mounted on the frame platform (1), the second driving mechanism (23) is mounted on the second L-shaped mounting bracket (22), and the clamping fixture (24) is mounted on the driving end of the second driving mechanism (23).

9. The rapid reversing mechanism for impact specimen processing according to claim 1, characterized in that, It also includes a receiving tray, the bottom of which is provided with a positioning structure that cooperates with the lower clamp positioning plate (4), and the receiving tray is detachably installed on the lower clamp positioning plate (4).

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