Intelligently controlled in-hole deburring mechanism for high-strength and high-modulus polyethylene fiber spinneret

Abstract

The present invention belongs to the technical field of spinneret deburring, and in particular to an intelligently controlled in-hole deburring mechanism for high-strength and high-modulus polyethylene fiber spinnerets, comprising a robotic arm and a clamping platform for fixing the spinneret, the robotic arm being connected to a transverse movement assembly, the free end of the robotic arm being fixedly connected to a first motor, the output shaft of the first motor being fixedly connected to a U-shaped mounting frame, a grinding block mounted on an actuator being provided in the mounting frame, the actuator being controlled by a control system to adjust the grinding block and the inner wall of the spinneret hole to be in close contact. In the present invention, the mounting frame and the grinding block are driven to rotate by the output shaft of the first motor, and the inner wall of the spinneret hole is deburred by the grinding block. During this process, the control system adjusts the grinding block and the inner wall of the hole to be in close contact through the actuator, thereby maintaining constant pressure grinding, avoiding the influence of continuous wear of the grinding block on the grinding accuracy, avoiding the change of grinding pressure caused by wear of the grinding block, and effectively ensuring the grinding accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of spinneret deburring, in particular to an intelligently controlled in-hole deburring mechanism for a high-strength and high-modulus polyethylene fiber spinneret. Background Art

[0002] In the production of high-strength, high-modulus polyethylene fibers, the quality of the spinneret directly impacts the fiber's quality. Burrs on the inner walls of the micropores on the spinneret can lead to uneven fiber thickness, an uneven surface, and even broken fibers.

[0003] Currently, traditional methods for deburring spinneret holes rely on manual or simple mechanical grinding, which is not only inefficient but also difficult to ensure grinding accuracy and pressure stability. Manual operation is easily influenced by subjective factors, making it difficult to accurately control the grinding force and depth. Mechanical grinding lacks intelligent adjustment functions, making it difficult to adjust to wear during the grinding process. This leads to inconsistent grinding results, seriously affecting product quality and production efficiency. Therefore, a mechanism that can achieve intelligent control and efficient and precise deburring is urgently needed. Summary of the Invention

[0004] Based on the technical problems existing in the prior art, the present invention proposes an intelligently controlled in-hole deburring mechanism for a high-strength and high-modulus polyethylene fiber spinneret.

[0005] The in-hole deburring mechanism of the high-strength and high-modulus polyethylene fiber spinneret proposed by the present invention comprises a robotic arm and a clamping platform for fixing the spinneret, the robotic arm is connected to the transverse movement assembly, the free end of the robotic arm is fixedly connected to the first motor, the output shaft of the first motor is fixedly connected to the U-shaped mounting frame, a grinding block mounted on the actuator is provided in the mounting frame, the actuator is controlled by the control system to adjust the grinding block and the inner wall of the hole of the spinneret to be in close contact; the spinneret is fixed to the clamping platform, and then the robotic arm and the transverse movement assembly are coordinated so that the free end of the robotic arm drives the mounting frame and the grinding block to move into the corresponding circular hole, and then the first motor is started, and the output shaft of the first motor will drive the mounting frame and the grinding block to rotate, and the inner wall of the hole of the spinneret is deburred by the grinding block. During this process, the control system will adjust the grinding block to be in close contact with the inner wall of the hole through the actuator, thereby maintaining constant pressure grinding, and avoiding the continuous wear of the grinding block from affecting the grinding accuracy.

[0006] Preferably, the actuator includes an electric push rod fixedly connected to the mounting frame, the output shaft of the electric push rod is fixedly connected to the mounting plate, and the grinding block is detachably mounted on the mounting plate; when the electric push rod receives the corresponding instruction from the control system, it will drive the mounting plate and the grinding block to move accordingly through the output shaft of the electric push rod, so that the grinding block is in close contact with the inner wall of the hole.

[0007] Preferably, the grinding block is fixedly connected to the mounting plate by a pair of bolts; the grinding block can be conveniently installed in the mounting plate by the bolts, and when the grinding block is worn to the point of being unable to be used normally, it can be easily and quickly replaced.

[0008] Preferably, a guide sleeve is fixedly connected to the inner wall of the mounting frame, a guide column is inserted into the guide sleeve, and the end of the guide column is fixedly connected to the mounting plate; through the cooperation between the guide sleeve and the guide column, the mounting plate can be limited and moved, and made more stable.

[0009] Preferably, the transverse movement assembly includes a slide rail, a screw rod is rotatably connected to the slide rail, a slider is threadedly connected to the screw rod, the slider is slidably connected to the slide rail, a second motor is fixedly connected to one end of the slide rail, the output shaft of the second motor is fixedly connected to the end of the screw rod, and the base of the robotic arm is fixedly connected to the slider; after receiving the corresponding instruction from the control system, the second motor will drive the screw rod to rotate through the output shaft of the second motor, and the screw rod will drive the slider to slide along the direction of the slide rail, thereby driving the robotic arm to move.

[0010] Preferably, the clamping table is rotatably connected to a screw, a first clamping plate is threadedly connected to the screw, the first clamping plate is slidably connected to the clamping table, and a second clamping plate corresponding to the first clamping plate is fixedly connected to the clamping table; the spinneret to be processed is placed between the first clamping plate and the second clamping plate, and then the screw is rotated by the handle to drive the first clamping plate to move toward the second clamping plate until the spinneret is clamped and fixed between the first clamping plate and the second clamping plate.

[0011] Preferably, a second rack is provided through the side of the mounting frame, the outer end of the second rack is rotatably connected to a roller brush, the bottom inner wall of the mounting frame is fixedly connected to a bearing seat, the bearing seat is rotatably connected to a gear, the end of the guide column is fixedly connected to the first rack, the first rack and the second rack are respectively meshed with the upper and lower parts of the gear; when the grinding block is adjusted to be closer to the inner wall of the hole, the guide column will make the roller brush closer to the inner wall of the hole through the meshing transmission between the first rack, the second rack and the gear, so that the roller brush can clean the inner wall of the hole after deburring.

[0012] Preferably, the control system includes a pressure acquisition module, a control module and a displacement acquisition module. The pressure acquisition module is used to detect the real-time contact pressure P between the grinding block and the inner wall of the hole in real time, and the displacement acquisition module is used to detect the real-time displacement D of the electric push rod in real time. The control module receives the data collected by the pressure acquisition module and the displacement acquisition module, performs comprehensive analysis, and then generates an evaluation coefficient. By comparing the evaluation coefficient with a preset evaluation coefficient reference threshold, it is determined whether the current deburring state is within a reasonable range, and the working state of the actuator is controlled according to the comparison result. If the current deburring state is not within a reasonable range, the actuator will start to adjust the grinding block to be close to the inner wall of the hole.

[0013] The control module is installed on the robotic arm, the pressure acquisition module is installed on the side of the mounting plate close to the grinding block, and the displacement acquisition module is integrated in the electric push rod; in this way, the real-time contact pressure P between the grinding block and the inner wall of the hole can be better detected in real time through the pressure acquisition module, and the real-time displacement D of the electric push rod can be better detected in real time through the displacement acquisition module.

[0014] Preferably, the control logic of the control module for the working state of the actuator is as follows:

[0015] When the evaluation coefficient When the threshold is reached, the electric push rod is triggered to compensate for the displacement ΔD to maintain constant pressure grinding and deburring;

[0016] like , the machine stops and alarms, prompting you to replace the grinding block.

[0017] Preferably, the control system controls the execution steps of the actuator as follows:

[0018] Initialization phase: setup 、 、 , calibrate α and β;

[0019] Start deburring: the electric push rod pushes the grinding block to contact the inner wall of the hole, the initial displacement Determined by pressure closed loop control;

[0020] Real-time monitoring and adjustment: collect the real-time contact pressure P between the grinding block and the inner wall of the hole and the real-time displacement D of the electric push rod, and calculate K. , maintain the current electric push rod position, if , by increment Adjust the electric push rod (γ is the compensation gain);

[0021] Termination condition: reached .

[0022] Compared with the prior art, the present invention provides an intelligently controlled in-hole deburring mechanism for a high-strength and high-modulus polyethylene fiber spinneret, which has the following beneficial effects:

[0023] 1. This intelligently controlled in-hole deburring mechanism for a high-strength, high-modulus polyethylene fiber spinneret utilizes a control system consisting of a pressure acquisition module, a control module, and a displacement acquisition module. This system monitors the contact pressure between the grinding block and the inner wall of the hole, as well as the displacement of the electric push rod, in real time. It automatically adjusts the contact between the grinding block and the inner wall to maintain constant grinding pressure. This prevents variations in grinding pressure due to grinding block wear, effectively ensuring grinding accuracy and improving spinneret quality, thereby guaranteeing the quality and stability of the high-strength, high-modulus polyethylene fiber.

[0024] 2. The high-strength and high-modulus polyethylene fiber spinneret has an intelligently controlled in-hole deburring mechanism. The roller brush installed on the side of the mounting frame can automatically adjust its position according to the distance between the grinding block and the inner wall of the hole through the meshing transmission of the gear, the first rack and the second rack. After deburring is completed, the inner wall of the hole is cleaned in time to remove residual debris, reducing the manual cleaning process, further improving production efficiency, and also reducing product quality problems caused by residual debris.

[0025] 3. The intelligently controlled in-hole deburring mechanism for the high-strength, high-modulus polyethylene fiber spinneret features a control system with clear control logic and execution steps, from initialization settings to real-time monitoring and adjustment, and finally to termination condition determination, forming a complete closed-loop control system. When an abnormality occurs, such as an evaluation coefficient exceeding a reasonable range, appropriate measures are promptly triggered, such as displacement compensation or shutdown alarms, effectively ensuring safe equipment operation and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the intelligently controlled in-hole deburring mechanism for the high-strength and high-modulus polyethylene fiber spinneret proposed in the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the clamping platform of the intelligently controlled in-hole deburring mechanism for the high-strength and high-modulus polyethylene fiber spinneret proposed in the present invention;

[0028] Figure 3 For the present invention Figure 1 A schematic diagram of the enlarged structure at point A;

[0029] Figure 4 This is a schematic diagram of the disassembled structure of the mounting plate and grinding block of the in-hole deburring mechanism for the intelligent control of the high-strength and high-modulus polyethylene fiber spinneret proposed in the present invention;

[0030] Figure 5 This is a schematic diagram of the mounting frame structure of the intelligently controlled in-hole deburring mechanism for the high-strength and high-modulus polyethylene fiber spinneret proposed in the present invention;

[0031] Figure 6 This is a schematic diagram of the in-hole deburring mechanism of the intelligently controlled high-strength and high-modulus polyethylene fiber spinneret proposed in the present invention.

[0032] In the figure: 1. Robotic arm; 2. First motor; 3. Mounting frame; 4. Grinding block; 5. Electric push rod; 6. Mounting plate; 7. Bolt; 8. Guide sleeve; 9. Guide column; 10. Pressure acquisition module; 11. Control module; 12. Slide rail; 13. Slider; 14. Screw; 15. Second motor; 16. Clamping table; 17. Screw; 18. First clamping plate; 19. Second clamping plate; 20. Bearing seat; 21. Gear; 22. First rack; 23. Second rack; 24. Roller brush. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0035] Reference Figures 1-6 The invention relates to an intelligently controlled in-hole deburring mechanism for a high-strength and high-modulus polyethylene fiber spinneret, comprising a robotic arm 1 and a clamping platform 16 for fixing the spinneret. The robotic arm 1 is connected to a transverse movement assembly, and a first motor 2 is fixedly connected to the free end of the robotic arm 1. The output shaft of the first motor 2 is fixedly connected to a U-shaped mounting bracket 3. A grinding block 4 mounted on an actuator is provided in the mounting bracket 3. The actuator is controlled by a control system to adjust the contact between the grinding block 4 and the inner wall of the spinneret hole.

[0036] During use, the spinneret is fixed to the clamping table 16, and then the robot arm 1 and the transverse movement assembly are coordinated so that the free end of the robot arm 1 drives the mounting frame 3 and the grinding block 4 to move into the corresponding circular hole, and then the first motor 2 is started. The output shaft of the first motor 2 will drive the mounting frame 3 and the grinding block 4 to rotate, and the inner wall of the hole of the spinneret is deburred by the grinding block 4. During this process, the control system will adjust the grinding block 4 to fit tightly against the inner wall of the hole through the actuator, thereby maintaining constant pressure grinding to avoid the continuous wear of the grinding block 4 affecting the grinding accuracy.

[0037] The actuator includes an electric push rod 5 fixedly connected to the mounting frame 3, the output shaft of the electric push rod 5 is fixedly connected to the mounting plate 6, and the grinding block 4 is detachably mounted on the mounting plate 6;

[0038] During use, when the electric push rod 5 receives the corresponding instruction from the control system, it will drive the mounting plate 6 and the grinding block 4 to move accordingly through the output shaft of the electric push rod 5, so that the grinding block 4 is in close contact with the inner wall of the hole.

[0039] Wherein, the grinding block 4 is fixedly connected to the mounting plate 6 by a pair of bolts 7;

[0040] During use, the grinding block 4 can be conveniently mounted in the mounting plate 6 by means of the bolts 7 , and when the grinding block 4 is worn out to the point where it cannot be used normally, it can be replaced conveniently and quickly.

[0041] The inner wall of the mounting frame 3 is fixedly connected with a guide sleeve 8, a guide post 9 is inserted into the guide sleeve 8, and the end of the guide post 9 is fixedly connected to the mounting plate 6;

[0042] During use, the guide sleeve 8 and the guide post 9 cooperate to limit the movement of the mounting plate 6 and make it more stable.

[0043] The traverse assembly includes a slide rail 12, a screw rod 14 is rotatably connected to the slide rail 12, a slider 13 is threadedly connected to the screw rod 14, the slider 13 is slidably connected to the slide rail 12, one end of the slide rail 12 is fixedly connected to a second motor 15, the output shaft of the second motor 15 is fixedly connected to the end of the screw rod 14, and the base of the robot arm 1 is fixedly connected to the slider 13;

[0044] When in use, after receiving the corresponding instructions from the control system, the second motor 15 will drive the screw rod 14 to rotate through the output shaft of the second motor 15, and the screw rod 14 will drive the slider 13 to slide along the direction of the slide rail 12, thereby driving the robot arm 1 to move.

[0045] The clamping platform 16 is rotatably connected to a screw rod 17, the screw rod 17 is threadedly connected to a first clamping plate 18, the first clamping plate 18 is slidably connected to the clamping platform 16, and the clamping platform 16 is fixedly connected to a second clamping plate 19 corresponding to the first clamping plate 18;

[0046] During use, the spinneret to be processed is placed between the first clamping plate 18 and the second clamping plate 19, and then the screw 17 is rotated by the handle to drive the first clamping plate 18 to move toward the second clamping plate 19 until the spinneret is clamped and fixed between the first clamping plate 18 and the second clamping plate 19.

[0047] Furthermore, a second rack 23 is provided on the side of the mounting frame 3, and a roller brush 24 is rotatably connected to the outer end of the second rack 23. A bearing seat 20 is fixedly connected to the inner wall of the bottom of the mounting frame 3, and a gear 21 is rotatably connected to the bearing seat 20. A first rack 22 is fixedly connected to the end of the guide column 9, and the first rack 22 and the second rack 23 are respectively engaged with the upper and lower parts of the gear 21;

[0048] During use, when the grinding block 4 is adjusted to be closer to the inner wall of the hole, the guide column 9 will make the roller brush 24 closer to the inner wall of the hole through the meshing transmission between the first rack 22, the second rack 23 and the gear 21, so that the roller brush 24 can clean the inner wall of the hole after deburring.

[0049] The control system includes a pressure acquisition module 10, a control module 11 and a displacement acquisition module. The pressure acquisition module 10 is used to detect the real-time contact pressure P between the grinding block 4 and the inner wall of the hole in real time. The displacement acquisition module is used to detect the real-time displacement D of the electric push rod 5 in real time.

[0050] It should be noted that the pressure acquisition module 10 can be a pressure sensor or other device capable of detecting the real-time contact pressure P between the grinding block 4 and the inner wall of the hole in real time, the displacement acquisition module can be a displacement sensor or other device capable of detecting the real-time displacement D of the electric push rod 5 in real time, and the control module 11 is an embedded controller (such as the STM32 series) with an integrated data fusion algorithm. Therefore, the pressure acquisition module 10, the displacement acquisition module and the control module 11 are not specifically limited here and can be selected according to actual needs;

[0051] When in use, the control module 11 receives the data collected by the pressure acquisition module 10 and the displacement acquisition module, performs comprehensive analysis, and then generates an evaluation coefficient. By comparing the evaluation coefficient with a preset evaluation coefficient reference threshold, it is determined whether the current deburring state is within a reasonable range, and the working state of the actuator is controlled according to the comparison result. If the current deburring state is not within a reasonable range, the actuator will start and adjust the grinding block 4 to be close to the inner wall of the hole;

[0052] The control module 11 is mounted on the robot arm 1, the pressure acquisition module 10 is mounted on the side of the mounting plate 6 close to the grinding block 4, and the displacement acquisition module is integrated into the electric push rod 5;

[0053] When in use, the real-time contact pressure P between the grinding block 4 and the inner wall of the hole can be better detected in real time through the pressure acquisition module 10, and the real-time displacement D of the electric push rod 5 can be better detected in real time through the displacement acquisition module.

[0054] In another embodiment, the control logic for automatically adjusting the contact between the grinding block 4 and the inner wall of the hole through the cooperation between the pressure acquisition module 10, the displacement acquisition module, the control module 11 and the actuator is as follows:

[0055] When the evaluation coefficient When the threshold is reached, the electric push rod 5 is triggered to compensate for the displacement ΔD to maintain constant pressure grinding and deburring;

[0056] like , the machine stops and alarms, prompting you to replace the grinding block 4.

[0057] Among them, the specific execution steps of the control system controlling the actuator are as follows:

[0058] Initialization phase: setup 、 、 , calibrate α and β;

[0059] Start deburring: the electric push rod 5 pushes the grinding block 4 to contact the inner wall of the hole, the initial displacement Determined by pressure closed loop control;

[0060] Real-time monitoring and adjustment: collect the real-time contact pressure P between the grinding block 4 and the inner wall of the hole and the real-time displacement D of the electric push rod 5, and calculate K. , maintain the current electric push rod 5 position, if , by increment Adjust the electric push rod 5 (γ is the compensation gain);

[0061] Termination condition: reached .

[0062] In the above, the evaluation coefficient The calculation formula is:

[0063] Where, : The real-time contact pressure between the grinding block 4 and the inner wall of the hole, : The real-time displacement of the electric push rod 5, : Preset target pressure (set according to material properties), : Maximum allowable displacement of the electric push rod 5 (mechanical safety threshold); α, β: weight coefficients (need to be calibrated experimentally, α+β=1).

[0064] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An intelligently controlled in-hole deburring mechanism for a high-strength and high-modulus polyethylene fiber spinneret, comprising a robotic arm (1) and a clamping platform (16) for fixing the spinneret, characterized in that: The mechanical arm (1) is connected to the transverse movement assembly, the free end of the mechanical arm (1) is fixedly connected to a first motor (2), the output shaft of the first motor (2) is fixedly connected to a U-shaped mounting frame (3), a grinding block (4) mounted on an actuator is provided in the mounting frame (3), the actuator is controlled by a control system to adjust the grinding block (4) and the inner wall of the spinneret hole to be in close contact, the control system includes a pressure acquisition module (10), a control module (11) and a displacement acquisition module, the control module (11) receives data collected by the pressure acquisition module (10) and the displacement acquisition module and generates an evaluation coefficient, compares it with a preset reference threshold, and controls the working state of the actuator according to the comparison result; The pressure acquisition module (10) is used to detect the real-time contact pressure P between the grinding block (4) and the inner wall of the hole in real time, and the displacement acquisition module is used to detect the real-time displacement D of the electric push rod (5) in real time; The control logic of the control module (11) for the working state of the actuator is as follows: When the evaluation coefficient When the electric push rod (5) is triggered to compensate the displacement ΔD, the constant pressure grinding and deburring are maintained. is the threshold; if , the machine stops and alarms, prompting you to replace the grinding block (4); The control system controls the execution steps of the actuator as follows: Initialization phase: setup 、 、 , calibrate α and β; Start deburring: The electric push rod (5) pushes the grinding block (4) to contact the inner wall of the hole, the initial displacement Determined by pressure closed loop control; Real-time monitoring and adjustment: collect the real-time contact pressure P between the grinding block (4) and the inner wall of the hole and the real-time displacement D of the electric push rod (5), and calculate the evaluation coefficient , the formula is: Where, : The real-time contact pressure between the grinding block (4) and the inner wall of the hole, : The real-time displacement of the electric push rod (5), : Preset target pressure, : The maximum allowable displacement of the electric push rod (5); α, β: weight coefficients, α+β=1; if , maintain the current position of the electric push rod (5), if , by increment Adjust the electric push rod (5), is the compensation gain; Termination condition: reached .

2. The intelligently controlled in-hole deburring mechanism for a high-strength and high-modulus polyethylene fiber spinneret according to claim 1 is characterized in that: The actuator comprises an electric push rod (5) fixedly connected to the mounting frame (3); the output shaft of the electric push rod (5) is fixedly connected to the mounting plate (6); and the grinding block (4) is detachably mounted on the mounting plate (6).

3. The intelligently controlled in-hole deburring mechanism for a high-strength and high-modulus polyethylene fiber spinneret according to claim 2 is characterized in that: The grinding block (4) is fixedly connected to the mounting plate (6) via a pair of bolts (7).

4. The intelligently controlled in-hole deburring mechanism for a high-strength and high-modulus polyethylene fiber spinneret according to claim 2 is characterized in that: A guide sleeve (8) is fixedly connected to the inner wall of the mounting frame (3), a guide column (9) is inserted into the guide sleeve (8), and an end of the guide column (9) is fixedly connected to the mounting plate (6).

5. The intelligently controlled in-hole deburring mechanism for a high-strength and high-modulus polyethylene fiber spinneret according to claim 1 is characterized in that: The transverse movement assembly includes a slide rail (12), a screw rod (14) is rotatably connected to the slide rail (12), the screw rod (14) is threadedly connected to a slider (13), the slider (13) is slidably connected to the slide rail (12), one end of the slide rail (12) is fixedly connected to a second motor (15), an output shaft of the second motor (15) is fixedly connected to the end of the screw rod (14), and the base of the robotic arm (1) is fixedly connected to the slider (13).

6. The intelligently controlled in-hole deburring mechanism for a high-strength and high-modulus polyethylene fiber spinneret according to claim 1 is characterized in that: The clamping platform (16) is rotatably connected to a screw rod (17), a first clamping plate (18) is threadedly connected to the screw rod (17), the first clamping plate (18) is slidably connected to the clamping platform (16), and a second clamping plate (19) corresponding to the first clamping plate (18) is fixedly connected to the clamping platform (16).

7. The intelligently controlled in-hole deburring mechanism for a high-strength and high-modulus polyethylene fiber spinneret according to claim 4 is characterized in that: A second rack (23) is provided on the side of the mounting frame (3), the outer end of the second rack (23) is rotatably connected to a roller brush (24), the bottom inner wall of the mounting frame (3) is fixedly connected to a bearing seat (20), the bearing seat (20) is rotatably connected to a gear (21), the end of the guide column (9) is fixedly connected to the first rack (22), and the first rack (22) and the second rack (23) are respectively engaged with the upper and lower parts of the gear (21).

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