An automatic discharging device for abnormal start and stop of rollers
By designing an abnormally start-stop automatic discharge device for rollers, and using the drive cylinder to control the displacement of the discharge pipe and the feed pipe, the roller quality problem caused by unnecessary grinding of the material tray by the grinding wheel is solved, effectively distinguishing and eliminating unqualified rollers, and improving the overall quality of the finished rollers.
Patent Information
- Application Number
- CN202311862181.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2043-12-29
AI Technical Summary
During the roller processing process, the grinding wheel will perform unnecessary grinding of certain positions of the material tray, resulting in the roller not meeting product requirements and affecting the overall product quality.
An automatic discharge device for abnormally starting and stopping rollers is designed to control the displacement of the discharge pipe and the discharge pipe by driving the cylinder to ensure that when the material tray is running normally, the rollers enter the material collection basket through the discharge pipe and the discharge pipe. During the material tray maintenance, the unqualified rollers are discharged into the waste basket through the discharge pipe.
Effectively distinguish and discharge unqualified rollers, improve the overall quality of finished rollers, and reduce roller quality problems caused by grinding wheels.
Smart Images

Figure CN117733732B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of roller manufacturing, and in particular to an automatic discharging device for abnormal start and stop of rollers. Background Art
[0002] The roller is the element that bears the load when the bearing is running. It is the weakest part in the roller bearing. Its manufacturing quality has a great influence on the bearing working performance, such as rotation accuracy, vibration, noise and flexibility. It is the main factor affecting the service life of the bearing. Rollers are usually produced in various shapes.
[0003] During the roller processing process, it is usually necessary to install the roller on the material tray. The material tray can clamp the roller. After the material tray clamps the roller, it can rotate to process the roller. Then the roller on the material tray can be processed by the grinding wheel. During the processing, the material tray keeps rotating to realize the processing and delivery of the rollers on each station. However, since the grinding wheel needs to be started in advance, the grinding wheel is usually not shut down when the material tray needs to be stopped for inspection. At this time, the grinding wheel will continuously grind the grinding wheel at the corresponding position of the material tray, resulting in the roller at the corresponding position not meeting the product requirements. It is also difficult to identify as other products pass out, which is easy to affect the overall quality of the product. Summary of the invention
[0004] In order to solve the problem that the grinding wheel will continuously grind the grinding wheel at the corresponding position of the material disc when processing the roller, thereby causing the roller at the corresponding position to fail to meet the product requirements, which will easily affect the overall quality of the product as other products are produced, the present application provides an automatic material discharge device for abnormal start and stop of rollers, and the specific solution is as follows.
[0005] A roller abnormal start-stop automatic discharging device, comprising a machine base, a material tray and a grinding wheel are rotatably connected to the machine base, the material tray is used to clamp the roller, and the grinding wheel is used to grind the roller. A discharge pipe is also arranged on the machine base, one end of the discharge pipe is arranged corresponding to the material tray, and the other end of the discharge pipe is arranged with a material receiving assembly;
[0006] The material receiving assembly includes a driving cylinder, a material taking basket, and a waste basket. A mounting seat is arranged on the piston rod of the driving cylinder, a material passing pipe and a material discharge pipe are fixedly arranged on the mounting seat, and the driving cylinder drives the mounting seat to move;
[0007] The machine base is also provided with a control component for controlling the driving cylinder. After the material tray stops, the control component controls the driving cylinder to align one end of the discharge pipe with the outlet pipe, and the other end of the discharge pipe with the waste basket for waste discharge. After the waste is discharged, the control component controls one end of the driving cylinder's feed pipe to align with the outlet pipe, and the other end of the feed pipe to align with the material collection basket.
[0008] By adopting the above technical scheme, the roller is fed into the material tray, and the roller rotates on the material tray. When the roller is aligned with the grinding wheel, the grinding wheel can grind the roller on the material tray to complete the processing of the roller. The normally processed roller can be sent out along the discharge pipe. At this time, the discharge pipe is aligned with the through pipe, and the roller can fall into the material basket along the discharge pipe and the through pipe for taking out. When the material tray is paused for an inspection, the grinding wheel is still grinding the cabinet. At this time, the control component aligns the discharge pipe with the discharge pipe. After the inspection is completed, the material tray is directed toward the discharge pipe to send out the roller again. At this time, the roller damaged by grinding can be discharged to the waste basket through the discharge pipe, so as to distinguish defective products. After a period of discharge, the discharge pipe is realigned with the discharge pipe to discharge the roller into the material basket again, thereby improving the overall quality of the taken out rollers.
[0009] Optionally, the control component includes an infrared sensor, and a detection plate is fixedly connected to the material tray. The detection plate is arranged at a position corresponding to the infrared sensor and is provided for detection by the infrared sensor.
[0010] By adopting the above technical solution, setting an infrared sensor and a corresponding detection plate, when the infrared sensor cannot detect the detection plate within a period of time, it can be determined that the material tray has stopped rotating and entered a maintenance state, so that the drive cylinder can be controlled to align the discharge pipe with the discharge pipe, thereby realizing the discharge of waste.
[0011] Optionally, the discharge pipe and the through pipe are both provided with induction magnetic rings, and a material blocking assembly is provided on one side of the discharge pipe close to the discharge pipe and the through pipe. The material blocking assembly includes a sensing element and a blocking rod. When the sensing element is not aligned with the induction magnetic ring, the blocking rod extends out and is used to block the roller.
[0012] By adopting the above technical solution, an induction magnetic ring is arranged on the discharge pipe and the through pipe, and a corresponding induction element is arranged on the discharging pipe. When the induction magnetic ring is not aligned with the induction element, the baffle rod is extended to cover the roller, thereby reducing the roller from falling when misaligned or getting stuck during the alignment process. When the induction magnetic ring and the induction element are aligned with each other, the discharge pipe or the through pipe is aligned with the discharging pipe. At this time, the baffle rod is retracted to allow the roller to pass, thereby further improving the processing efficiency.
[0013] Optionally, the material blocking assembly includes a sleeve, which is fixedly connected to the discharge pipe, a mini motor is arranged inside the sleeve, a screw rod is arranged on the rotating shaft of the mini motor, the screw rod is threadedly connected to the blocking rod, and the blocking rod is slidably connected to the sleeve and is restricted in rotation by the sleeve.
[0014] By adopting the above technical solution, since the stop rod is restricted from rotating by the sleeve, when the shaft of the mini motor rotates, the screw rod can drive the stop rod to move, thereby realizing the extension and retraction of the screw rod, and the driving is convenient.
[0015] Optionally, the sensing element includes a magnetic sensor, which is electrically connected to a mini motor. When the magnetic sensor detects an inductive magnetic ring, the mini motor drives the barrier lever to retract.
[0016] By adopting the above technical solution, the magnetic sensor can detect the magnetic ring more accurately, so that the mini motor can be controlled more accurately, and the barrier rod can be extended and retracted more accurately, thereby improving the shielding effect on the roller.
[0017] Optionally, corresponding sleeves are also provided on the discharge pipe and the through pipe, and an elastic pad is fixedly provided on the corresponding side of the sleeve. The elastic pad is arranged around the sleeve, and the elastic pad is used to abut against the roller.
[0018] By adopting the above technical solution, an elastic pad is arranged on the sleeve. When the discharge pipe and the feeding pipe are in motion, if some rollers fall off, the rollers will become skewed and stuck due to the misalignment. Therefore, the elastic pad can block the rollers and reduce the damage to the sleeve caused by interference to a certain extent.
[0019] Optionally, a contact switch is further provided in the sleeve corresponding to the elastic pad. When the elastic pad squeezes the contact switch, the mini motor drives the blocking rod to block the roller, and the driving cylinder drives the mounting seat to move back and forth.
[0020] By adopting the above technical solution, a contact switch is set at the position corresponding to the elastic pad in the sleeve. When the elastic pad is squeezed, it can be regarded as that the roller is stuck. At this time, the contact switch is triggered, thereby driving the cylinder to drive the mounting seat to move back and forth, so that the roller can be freed from the restriction and continue to move normally, reducing the situation of roller getting stuck.
[0021] Optionally, a plurality of contact switches are arranged around the sleeve, and a plurality of abutment blocks are fixedly arranged on the elastic pad corresponding to the contact switches, and the abutment blocks are used to abut the contact switches.
[0022] By adopting the above technical solution, multiple contact switches are set, and abutment blocks are set to reduce the situation where the contact switch cannot be pushed open, reduce the situation where the roller is stuck and cannot trigger the contact switch, and further reduce the situation where the roller is stuck.
[0023] Optionally, the induction element also includes a mutually repelling magnetic ring, which repels each other with the induction magnetic ring, and a sliding groove is provided in the sleeve corresponding to the mutually repelling magnetic ring, and the mutually repelling magnetic ring is slidably connected in the sliding groove, and a contact switch is provided in the sleeve corresponding to the mutually repelling magnetic ring, and after the mutually repelling magnetic ring contacts the contact switch, the mini motor drives the gear lever to be retracted.
[0024] By adopting the above technical solution, the sensing element also includes mutually repelling magnetic rings, which are driven by magnetic force and are more stable. This can reduce the situation where the sensor cannot make judgments due to factors such as determination, and further improve stability.
[0025] Optionally, a discharge port is provided at the lower side of the feed pipe, and an elastic block is fixedly provided at a position of the feed pipe close to the discharge port, and the elastic block is used to abut against a roller.
[0026] By adopting the above technical solution, the elastic block can be used for buffering before the roller is sent out, thereby reducing the collision and wear caused by the roller rushing out of the discharge pipe quickly.
[0027] In summary, this application has at least the following beneficial effects:
[0028] 1. The present application solves the problem that, when processing rollers under the prior art, the grinding wheel will continuously grind the grinding wheel at the corresponding position of the material tray, thereby causing the grinding wheel at the corresponding position to fail to meet product requirements, which is likely to affect the overall quality of the product as other products are discharged. The present application displaces the discharge pipe and the through pipe by setting a driving cylinder. When the material tray operates normally, the roller passes through the discharge pipe and the discharge pipe and reaches the material taking basket for material taking. When the material tray is under maintenance, the driving cylinder aligns the discharge pipe with the discharge pipe, and the roller can discharge the waste material into the waste basket through the discharge pipe and the discharge pipe, so that the waste material and the finished roller can be classified, reducing the situation where the roller quality is affected.
[0029] 2. The present application also reduces the possibility of the roller getting stuck by providing an elastic pad and a contact switch, and after the roller gets stuck, the contact switch can be used to move the driving cylinder back and forth, so that the roller falls normally. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 It is a three-dimensional diagram of the first embodiment.
[0031] Figure 2 It is a cross-sectional view of the material receiving assembly in the second embodiment.
[0032] Figure 3 It is a cross-sectional view of the material receiving assembly in the third embodiment.
[0033] Description of reference numerals:
[0034] 1. Machine base; 11. Material tray; 111. Detection board; 12. Grinding wheel; 13. Infrared sensor;
[0035] 2. Discharging pipe; 22. Sleeve; 221. Mini motor; 222. Screw rod; 223. Stop rod; 224. Induction element; 225. Elastic pad; 226. Contact switch; 23. Mutually exclusive magnetic ring; 24. Sliding groove;
[0036] 3. Driving cylinder; 31. Discharge pipe; 32. Feed pipe; 321. Induction magnetic ring; 322. Discharge port; 323. Elastic block; 33. Mounting seat;
[0037] 4. Take the material basket;
[0038] 5. Waste basket. DETAILED DESCRIPTION
[0039] The following is combined with Figure 1-3 , the present application is further described in detail through specific embodiments.
[0040] Embodiment 1
[0041] A roller abnormal start and stop automatic discharging device, such as Figure 1 As shown, the machine base 1 includes a material tray 11 and a grinding wheel 12 which are rotatably connected to the machine base 1. The material tray 11 is used to clamp the roller, and the grinding wheel 12 is used to grind the roller. In specific implementation, a plurality of clamping blocks are arranged on the material tray 11, and the clamping blocks can move with the rotation of the material tray 11, thereby clamping and releasing the roller, and the grinding wheel 12 rotates continuously toward the roller, thereby grinding the roller.
[0042] like Figure 1 As shown, a discharge pipe 2 is also fixedly mounted on the machine base 1, one end of the discharge pipe 2 is arranged corresponding to the material tray 11, and a material receiving assembly is arranged at the other end of the discharge pipe 2. The material receiving assembly includes a driving cylinder 3, a material taking basket 4, and a waste basket 5, and the driving cylinder 3, the material taking basket 4, and the waste basket 5 are all fixedly connected to the machine base 1. A mounting seat 33 is arranged on the piston rod of the driving cylinder, and a material passing pipe 32 and a material discharge pipe 31 are fixedly arranged on the mounting seat 33, and the material taking basket 4 is arranged corresponding to the position of the material passing pipe 32, and the material discharge pipe 31 is arranged corresponding to the position of the waste basket 5. During specific implementation, the driving cylinder pushes the mounting base 33 to move, and a control component for controlling the driving cylinder 3 is also provided on the machine base 1. After the material tray 11 stops, the control component controls the driving cylinder 3 to make one end of the discharge pipe 31 align with the discharge pipe 2, and the other end of the discharge pipe 31 aligns with the waste basket 5 for waste discharge. After the waste is discharged, the control component controls one end of the feed pipe 32 of the driving cylinder 3 to align with the discharge pipe 2, and the other end of the feed pipe 32 to align with the material taking basket 4, thereby realizing the separation of waste and finished products and improving the overall quality of the product.
[0043] like Figure 1As shown, the control component includes an infrared sensor 13, and the infrared sensor 13 is fixedly mounted on the machine base 1. A detection plate 111 is fixedly connected to the material tray 11, and the detection plate 111 is arranged corresponding to the position of the infrared sensor 13 and is detected by the infrared sensor 13. In specific implementation, the infrared sensor 13 can use distance detection, and the detection plate 111 can be detected by the infrared sensor 13 when it rotates. Therefore, the infrared sensor 13 can detect the detection plate 111 when the material tray 11 rotates. When the material tray 11 stops rotating, the infrared sensor 13 may always detect the detection plate 111 or cannot detect the detection plate 111. At this time, the driving cylinder 3 can be driven.
[0044] Working principle: The grinding wheel 12 can continuously grind the rollers on the material tray 11, and the ground rollers can be sent out through the discharge pipe 2. When the material tray 11 operates normally, the discharge pipe 2 is aligned with the feed pipe 32, and qualified rollers are passed to the material basket 4. When the material tray 11 is under maintenance, some rollers are over-ground. At this time, the control component controls the drive cylinder 3 to align the discharge pipe 31 with the discharge pipe 2, and discharge the unqualified rollers into the discharge basket, thereby separating the unqualified rollers and improving the overall quality of the product.
[0045] Embodiment 2
[0046] like Figure 2 As shown, the main difference between the second embodiment and the first embodiment is that the material blocking assembly in the second embodiment further includes a sleeve 22. The sleeve 22 is fixedly connected to the discharge pipe 2, a mini motor 221 is arranged inside the sleeve 22, a screw rod 222 is arranged on the rotating shaft of the mini motor 221, the screw rod 222 is threadedly connected to the blocking rod 223, the blocking rod 223 is slidably connected to the sleeve 22 and is restricted from rotating by the sleeve 22. In specific implementation, since the blocking rod 223 is restricted from rotating by the sleeve 22 and is threadedly connected to the screw rod 222, when the screw rod 222 rotates, the blocking rod 223 can be driven to move, thereby blocking the roller.
[0047] like Figure 2 As shown, the discharge pipe 31 and the through pipe 32 are fixedly provided with an induction magnetic ring 321, and the induction magnetic ring 321 is arranged on a side close to the discharge pipe 2. A material blocking assembly is arranged on a side of the discharge pipe 2 close to the discharge pipe 31 and the through pipe 32, and the material blocking assembly includes a sensing element 224 and a blocking rod 223. In specific implementation, the sensing element 224 includes a magnetic sensor, and the sensing element 224 is electrically connected to the mini motor 221. When the sensing element 224 is not aligned with the induction magnetic ring 321, the mini motor 221 drives the blocking rod 223 to extend and block the roller, so as to reduce the situation that the roller falls from the gap when it is not sent out.
[0048] like Figure 2As shown, the corresponding sleeve 22 is also fixedly provided on the discharge pipe 31 and the feed pipe 32, and the induction magnetic ring 321 is also provided on the sleeve 22. An elastic pad 225 is fixedly provided on the corresponding side of the sleeve 22, and the elastic pad 225 is arranged around the sleeve 22, and the elastic pad 225 is used to abut the roller. In specific implementation, the elastic pad 225 includes a rubber pad. During the adjustment process of the driving cylinder 3, the blocking rod 223 may not be fully extended to block the roller and cause the roller to fall out. At this time, the roller will interfere and get stuck. At this time, the roller can abut the elastic pad 225, and the elastic pad 225 plays a buffering role to reduce the situation where the sleeve 22 is damaged. In other embodiments, the sleeve 22 can also be changed to a threaded connection, and the sleeve 22 can be replaced in time after it is damaged.
[0049] like Figure 2 As shown, a contact switch 226 is also provided in the sleeve 22 corresponding to the elastic pad 225. When the elastic pad 225 squeezes the contact switch 226, the mini motor 221 drives the blocking rod 223 to block the roller, and the driving cylinder 3 drives the mounting seat 33 to move back and forth. There are multiple contact switches 226 arranged around the sleeve 22, and multiple abutment blocks are fixedly provided at the positions corresponding to the contact switches 226 on the elastic pad 225, and the abutment blocks are used to abut the contact switch 226. In specific implementation, when the roller is stuck, the elastic pad 225 can be squeezed, and the elastic pad 225 triggers the contact switch 226, thereby driving the driving cylinder 3 to move back and forth within a certain range, so as to realign the roller of the stuck owner and make it fall. In order to reduce further damage, the driving cylinder 3 adopts a small amplitude back and forth movement.
[0050] like Figure 1 and Figure 2 As shown, a discharge port 322 is provided at the lower side of the feed pipe 32, and an elastic block 323 is fixedly provided at a position of the feed pipe 32 near the discharge port 322. In specific implementation, the discharge pipe 31 is also provided with the same mechanism, and the elastic block 323 is used to abut the roller.
[0051] Working principle: When the driving cylinder 3 moves on the driving mounting seat 33, the mini motor 221 drives the baffle rod 223 to extend, reducing the situation where the roller falls out prematurely and gets stuck or falls onto the machine base 1. When the induction magnetic ring 321 is aligned with the induction element 224, it can be regarded as that the position has been aligned, and the baffle rod 223 is retracted to allow the roller to pass out normally. When the baffle rod 223 fails to block the roller during the extension process, the roller will fall between the discharge pipe 31 and the discharge pipe 2 or between the feed pipe 32 and the discharge pipe 2, and then become skewed and stuck during the movement. At this time, the roller abuts against the elastic pad 225, and the elastic pad 225 acts as a buffer while squeezing the contact switch 226. After receiving the signal, the contact switch 226 drives the cylinder 3 to move slightly within a certain range, so that the roller can fall out normally.
[0052] Embodiment 3
[0053] like Figure 3 As shown, the main difference between the third embodiment and the second embodiment is the induction element 224. The induction element 224 of the third embodiment is a mutually exclusive magnetic ring 23. The induction element 224 also includes a mutually exclusive magnetic ring 23. The mutually exclusive magnetic ring 23 and the induction magnetic ring 321 repel each other. A sliding groove 24 is provided in the sleeve 22 corresponding to the mutually exclusive magnetic ring 23. The mutually exclusive magnetic ring 23 is slidably connected in the sliding groove 24. A contact switch 226 is provided in the sliding groove 24 corresponding to the mutually exclusive magnetic ring 23. In specific implementation, when the mutually exclusive magnetic ring 23 is aligned with and contacts the contact switch 226, the mini motor 221 drives the blocking rod 223 to retract.
[0054] Working principle: It is driven by magnetic force, which is more stable and can reduce the situation where the sensor cannot make judgments due to factors such as determination, further improving stability.
[0055] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A roller abnormal start-stop automatic discharging device, comprising a machine base (1), a material tray (11) and a grinding wheel (12) rotatably connected to the machine base (1), the material tray (11) is used to clamp the roller, and the grinding wheel (12) is used to grind the roller, characterized in that: The machine base (1) is also provided with a discharge pipe (2), one end of the discharge pipe (2) is provided corresponding to the material tray (11), and the other end of the discharge pipe (2) is provided with a material receiving assembly; The material receiving assembly comprises a driving cylinder (3), a material taking basket (4), and a waste basket (5); a mounting seat (33) is arranged on the piston rod of the driving cylinder (3); a material passing pipe (32) and a material discharge pipe (31) are fixedly arranged on the mounting seat (33); the driving cylinder (3) pushes the mounting seat (33) to move; The machine base (1) is also provided with a control component for controlling the driving cylinder (3). After the material tray (11) stops, the control component controls the driving cylinder (3) so that one end of the discharge pipe (31) is aligned with the discharge pipe (2), and the other end of the discharge pipe (31) is aligned with the waste basket (5) for waste discharge. After the waste is discharged, the control component controls one end of the feed pipe (32) of the driving cylinder (3) to be aligned with the discharge pipe (2), and the other end of the feed pipe (32) is aligned with the material collection basket (4); The discharge pipe (31) and the through pipe (32) are both provided with an induction magnetic ring (321); a material blocking assembly is provided on one side of the discharge pipe (2) close to the discharge pipe (31) and the through pipe (32); the material blocking assembly comprises an induction element (224) and a blocking rod (223); when the induction element (224) is not aligned with the induction magnetic ring (321), the blocking rod (223) extends out and is used to block the roller; The material blocking assembly comprises a sleeve (22), the sleeve (22) is fixedly connected to the discharge pipe (2), a mini motor (221) is arranged inside the sleeve (22), a screw rod (222) is arranged on the rotating shaft of the mini motor (221), the screw rod (222) is threadedly connected to a blocking rod (223), and the blocking rod (223) is slidably connected to the sleeve (22) and is restricted from rotating by the sleeve (22); The sensing element (224) comprises a magnetic sensor, and the magnetic sensor is electrically connected to the mini motor (221). When the magnetic sensor detects the inductive magnetic ring (321), the mini motor (221) drives the blocking rod (223) to retract. The discharge pipe (31) and the feed pipe (32) are also provided with corresponding sleeves (22), and an elastic pad (225) is fixedly provided on the corresponding side of the sleeve (22), and the elastic pad (225) is arranged around the sleeve (22), and the elastic pad (225) is used to abut against the roller; A contact switch (226) is also provided in the sleeve (22) corresponding to the elastic pad (225); when the elastic pad (225) presses the contact switch (226), the mini motor (221) drives the blocking rod (223) to block the roller, and the driving cylinder (3) drives the mounting seat (33) to move back and forth; A plurality of contact switches (226) are arranged around the sleeve (22), and a plurality of abutment blocks are fixedly arranged on the elastic pad (225) corresponding to the contact switches (226), wherein the abutment blocks are used to abut against the contact switches (226).
2. The automatic discharging device for abnormal start and stop of rollers according to claim 1 is characterized in that: The control component comprises an infrared sensor (13); a detection plate (111) is fixedly connected to the material tray (11); the detection plate (111) is arranged at a position corresponding to the infrared sensor (13) and is provided for detection by the infrared sensor (13).
3. The automatic discharging device for abnormal start and stop of rollers according to claim 1 is characterized in that: The induction element (224) further comprises a mutually repelling magnetic ring (23), wherein the mutually repelling magnetic ring (23) and the induction magnetic ring (321) repel each other, wherein a sliding groove (24) is provided in the sleeve (22) corresponding to the mutually repelling magnetic ring (23), wherein the mutually repelling magnetic ring (23) is slidably connected in the sliding groove (24), wherein a contact switch (226) is provided in the sleeve (22) corresponding to the mutually repelling magnetic ring (23), and after the mutually repelling magnetic ring (23) contacts the contact switch (226), the mini motor (221) drives the blocking rod (223) to be retracted.
4. The automatic discharging device for abnormal start and stop of rollers according to claim 1 is characterized in that: A discharge port (322) is provided at the lower side of the feed pipe (32), and an elastic block (323) is fixedly provided at a position of the feed pipe (32) close to the discharge port (322), and the elastic block (323) is used to abut against the roller.
Citation Information
Patent Citations
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CN101725591A
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CN107416501A