Roll shaft parallelism measurement and control device and method of oiling dryer

Abstract

The invention relates to the technical field of carbon fiber chemical equipment, in particular to a roll shaft parallelism measurement and control device of an oiling drying machine, the device comprises a deflection measurement unit and a deflection adjustment unit, the deflection measurement unit comprises a roll shaft sleeve, a pressing rod, a laser displacement sensor, an air cylinder and a PLC, the roll shaft sleeve and a to-be-measured extending roll shaft are concentrically arranged, and the pressing rod is arranged on the roll shaft sleeve; the laser displacement sensor is connected with the PLC, the air cylinder is used for controlling the pressing rod to adjust the measuring point position, real-time deflection data are accessed into the PLC, the deflection value of the extending roller shaft is dynamically monitored, the deflection adjusting unit comprises a supporting frame and a first driving piece, and according to the deflection measuring value, the first driving piece pushes the supporting frame to adjust the deflection value of the extending roller shaft. According to the measurement and control device, through a non-contact measurement mode, the defect of traditional deflection detection pain points is overcome, the deflection detection precision is improved, traditional point contact adjustment is upgraded into surface contact drive, and the deflection adjustment reliability and stability are enhanced.

Description

Technical Field

[0001] The present application relates to the technical field of carbon fiber chemical equipment, and in particular to a device and method for measuring and controlling the parallelism of rollers of an oiling dryer. Background Art

[0002] Carbon fiber is a high-strength, high-modulus fiber made from polyacrylonitrile (PAN) fiber, viscose fiber or asphalt fiber as the raw silk, which is made by heating to remove all elements except carbon.

[0003] The process for producing carbon fiber precursor involves the spinning solution passing through a spinneret into a coagulation bath, where the tow is formed. The tow then passes through a washing and drawing unit to remove impurities and solvent from the surface of the precursor. The tow then passes through the oiling, transmission, pressure, and drying rollers of an oiling and drying machine, where the surface of the precursor is sequentially oiled, scraped, and dried to improve its bundling, wear resistance, and water absorption resistance.

[0004] Reference Figure 1 The oiling dryer includes an oiling housing 1, a drive roller 11 rotatably connected to the oiling housing 1, a pressure roller (not shown) fixed to the drying housing 2, the drying housing 2, and a drying roller 21 rotatably connected to the drying housing 2. The drying housing 2 is connected to the oiling housing 1 by a plurality of first bolts 12. The oiling roller and the drying roller 21 are both fixed at one end and cantilevered at the other end. The outer diameters and weights of the two rollers differ significantly. Due to the different stiffness of the drive roller 11 and the drying roller 21, the deflection of the drive roller 11 is greater than that of the drying roller 21.

[0005] After the tow is oiled by the oiling roller, it passes between the drive roller 11 and the pressure roller. After the excess oil on the tow is removed, it enters the drying roller 21. When the tow passes through the drive roller 11 with large deflection and the drying roller 21 with small deflection after being oiled, the gap between the drive roller 11 and the pressure roller is small on the side close to the oiling box 1, and large on the side away from the oiling box 1. As a result, more oil is attached to the side of the drive roller 11 away from the oiling box 1, causing uneven oiling of the tow in the width direction, resulting in different amounts of oil attached to the drying roller 21, which not only affects the heat transfer efficiency of the drying roller 21, but also causes differences in the drying density between different fibers in the tow, affecting the mechanical properties of the raw silk.

[0006] At present, the parallelism of the axes of the driving roller 11 and the drying roller 21 is adjusted by driving a pin 14 on one end of the oiling box 1 and the drying box 2 close to the roller shaft to fix the drying box 2. A second bolt 13 is provided on the drying box 2. The second bolt 13 lifts the oiling box 1 and rotates around the drying box 2 to achieve the parallelism adjustment of the driving roller 11 and the drying roller 21.

[0007] However, since the oiling box body 1 rotates around the pin shaft 14, the contact surface of the oiling box body 1 lifted by the second bolt 13 changes suddenly from surface contact to point contact, and the stress at the contact point between the oiling box body 1 and the second bolt 13 is extremely large, and the adjustment method is unreliable; in addition, this adjustment method can only be manually adjusted before the equipment is started, which not only increases the difficulty of debugging for the operator, but also has poor adjustment accuracy, which directly affects the parallelism adjustment effect of the driving roller 11 and the drying roller 21, thereby seriously restricting the accuracy of the oiling dryer and the further effective improvement of the raw silk production efficiency.

[0008] Therefore, in order to solve the above technical problems, it is urgent to explore and break through the existing adjustment methods of the drive roller and the drying roller to improve the mechanical properties of the raw yarn. Therefore, the establishment of a precise roller parallelism control device is still a key technical problem that restricts the performance improvement of current carbon fiber intelligent equipment and urgently needs to be solved in intelligent manufacturing. Summary of the Invention

[0009] In order to overcome the limitations of existing technologies, improve the uniformity of tow oiling, enhance the performance of carbon fiber precursor, improve the working accuracy of the oiling dryer and the precursor production efficiency, reduce the labor intensity of operators, and ensure the safety of workshop workers.

[0010] The present application provides a device for measuring and controlling the parallelism of rollers of an oiling dryer, which adopts the following technical solution:

[0011] It includes a drying box, an oiling box rotatably connected to the drying box, a deflection measuring unit and a deflection adjusting unit. A slot is provided on the drying box, the length direction of the slot is collinear with the rotation point of the oiling box, and the slot is provided at a diagonal position of the rotation point of the oiling box. The deflection adjusting unit includes a driving assembly for driving the oiling box to rotate around the drying box, the driving assembly includes a support frame and a first driving member for driving the support frame to move linearly, the support frame is provided with a support shaft, and the support shaft is embedded in the slot.

[0012] By adopting the above technical solution, on the deflection adjustment unit, since the length direction of the slot hole is collinear with the upper oil box body, and the support shaft slides in the slot hole of the drying box body, it is ensured that the upper oil box body can rotate relative to the drying box body under the action of the driving member, and the adjustment angle of the parallelism of the roller shaft is controlled according to the measured deflection value; the support shaft and the slot hole are always in sliding friction, which reduces the contact stress of the contact surface between the support shaft and the slot hole of the drying box body when the driving member adjusts. The slot hole is opened at the diagonal position of the rotation point of the upper box body, and the length direction is collinear with the upper oil box body, so that the axial force required by the driving member to drive the support shaft to push the upper oil box body is minimized, thereby reducing the contact stress of the contact surface between the support shaft and the drying box body, and improving the reliability of parallelism adjustment.

[0013] Optionally, the support shaft is located at the upper end of the support frame, and a baffle is detachably connected to the middle of the support shaft, and the length of the baffle is greater than the diameter of the slot hole.

[0014] By adopting the above technical solution, the baffle and the support shaft are detachably connected, which is convenient for disassembly and assembly. The outer diameter of the baffle is larger than the width of the slot hole, which prevents the support shaft from escaping from the slot hole, thereby improving the safety of equipment use.

[0015] Optionally, the support frame is a symmetrical U-shaped structure, and a first mounting hole and a second mounting hole are provided on the support frame that pass through the support shaft; a baffle groove is provided on the side of the support frame close to the second mounting hole, and the baffle is embedded in the baffle groove, and the baffle is fixed to the support frame and the support shaft in a detachable manner.

[0016] By adopting the above technical solution, the symmetrical U-shaped support frame improves the strength of the support shaft, making the roller parallelism adjustment more reliable. The baffle groove is embedded in the support frame to reduce the overall size of the device and prevent the baffle from interfering with related devices during the movement of the support frame.

[0017] Optionally, a non-through guide countersunk hole is provided at the bottom of the support frame, and the upper end of the first driving member is embedded in the guide countersunk hole and abuts against the bottom end surface of the guide countersunk hole.

[0018] By adopting the above technical solution, the first driving member is embedded in the guide countersunk hole, which ensures the linear movement of the support frame and improves the movement reliability of the support frame.

[0019] Optionally, the deflection measuring unit includes a roller sleeve fixed to the drying box body, an elastic member embedded in the roller sleeve, and an actuator assembly, the roller sleeve is sleeved on one side of the fixed end of the extended roller shaft, and the inner circumference diameter of the roller sleeve is larger than the outer diameter of the extended roller shaft, the roller sleeve includes an upper mounting portion and two lower mounting portions away from the upper mounting portion, the two lower mounting portions are each provided with a cavity for accommodating the elastic member, the elastic member is fixed to the roller sleeve at one end away from the upper mounting portion, the elastic member is provided with a pressure rod at one end close to the upper mounting portion, the two lower mounting portions are each provided with an adjustment hole for accommodating the pressure rod in the length direction, the pressure rod is slidably connected to the two adjustment holes up and down, the actuator assembly is used to drive the pressure rod to reciprocate up and down along the two adjustment holes, the pressure rod is provided with a laser displacement sensor, the beam direction of the laser displacement sensor is consistent with the axial direction of the roller sleeve, and the laser displacement sensor is located directly below the axis of the roller sleeve, and the laser displacement sensor and the actuator assembly are respectively electrically connected to the PLC controller.

[0020] By adopting the above technical solution, the deflection measurement unit fixes the roller sleeve on the box where the extended roller is installed, and the inner diameter of the roller sleeve is larger than the diameter of the extended roller to avoid contact between the roller and the roller sleeve; the executive component drives the pressure rod to drive the laser displacement sensor to move up and down for multi-point distance measurement. According to the displacement difference of the pressure rod and the measured distance of the laser displacement sensor, the deflection value of the extended roller can be calculated. Since the laser displacement sensor is connected to the PLC controller, when the detected measured distance is greater than the length of the extended roller, the executive component is controlled to adjust the displacement of the pressure rod to achieve precise control; in addition, the position of the pressure rod is adjusted by the executive component to avoid contact between the pressure rod and the extended roller, preventing the extended roller from causing frictional resistance to it during rotation; non-contact laser beam ranging is used to avoid the impact on the rotation of the extended roller, and the deflection value of the extended roller can be dynamically monitored, and the bending deformation of the extended roller can be monitored in real time, so that abnormal deflection can be detected in time to prevent sudden failures; when the deflection value is detected to exceed the safety threshold, the PLC controller triggers the alarm function, and stops the machine for detection in time, thereby improving the safety of equipment use.

[0021] Optionally, the execution assembly includes an execution frame and a second driving member that drives the execution frame to move back and forth up and down, the execution frame includes a first plug-in portion and a second plug-in portion, the pressure rod is provided with a first accommodating groove connected to the first plug-in portion, and a second accommodating groove connected to the second plug-in portion, the first accommodating groove is a V-shaped groove, and the second accommodating groove is a square flat groove.

[0022] By adopting the above technical solution, the first accommodating groove is a V-shaped groove, and the second accommodating groove is a square flat groove. The V-shaped groove is used to limit the radial movement of the first plug-in part, and the V-shaped groove disperses the load through symmetrical contact, reduces local stress concentration, avoids deformation of the execution frame, and has high connection reliability. The setting of the square groove makes the second accommodating groove a free end. When the position of the first plug-in part is determined, the position of the second plug-in part can be determined. The setting of the square groove reduces the manufacturing error of the execution frame, and the installation reliability is high. The V-shaped groove has an automatic centering function to reduce clamping time.

[0023] Optionally, a boss is fixed to the upper mounting portion of the roller sleeve, and the actuator also includes a support plate, which is close to the side of the roller sleeve and is connected to a limit sleeve that accommodates the boss. The second drive member is installed on the side of the support plate away from the roller sleeve, and the force center of the second drive member passes through the axis of the limit sleeve. The second drive member is a cylinder.

[0024] By adopting the above technical solution, the limiting sleeve is arranged in the convex column to realize the positioning of the execution frame, so that the support frame is symmetrically arranged on both sides of the roller sleeve, and the force axis of the driving member is consistent with the axis of the limiting sleeve, thereby improving the uniformity of the force on the support frame and improving the accuracy of detection.

[0025] Optionally, a connecting flange is provided on the elastic member, and a connecting sleeve is provided on the lower mounting portion. The connecting flange and the connecting sleeve are detachably connected, and the connection length of the connecting flange is smaller than the length of the connecting sleeve.

[0026] By adopting the above technical solution, one end of the elastic member is fixed on the connecting flange, and the connecting flange and the connecting sleeve are detachably connected, which is convenient for disassembly. The connection height of the connecting flange is less than the height of the connecting sleeve, ensuring the reliability of the connection.

[0027] Optionally, the elastic member is a compression spring, the depth of the cavity is greater than the free extension of the compression spring, and when the compression spring is in a free state, the upper end surface of the pressure rod away from the compression spring is higher than the lower vertex of the extended roller shaft.

[0028] By adopting the above technical solution, it can be ensured that when the pressure rod is tangent to the extended roller to be measured, the compression spring is in a compressed state, ensuring that the position of the laser displacement sensor can be close to and directly below the extended roller to be measured.

[0029] A method for measuring and controlling the parallelism of the rollers of an oiling dryer, S1, installing the roller sleeve and the extended roller to be measured concentrically on the box body, and the length direction of the lower mounting portion of the roller sleeve is the vertical direction; S2, inserting the pressure rod into the two adjustment holes, and the light beam direction of the laser displacement sensor is consistent with the cantilever direction of the extended roller; S3, installing the compression spring into the cavity, connecting the connecting flange to the roller sleeve, and under the action of the compression spring, the pressure rod is tangent to the extended roller; S4, installing the limiting sleeve of the execution frame into the convex column of the roller sleeve, the first plug-in portion is installed in the first receiving groove, the second plug-in portion is installed in the second receiving groove, and the cylinder is fixed to the drying box. body, and is used to drive the execution frame to reciprocate up and down; S5, take two measuring points within the effective range, and measure the distances L1 and L2 of the two measuring points in the length direction through the laser displacement sensor, and obtain the vertical displacement y value of the two measuring points according to the pushing distance of the cylinder, and the rotation angle of the extended roller shaft can be calculated as a=arctan(y / (L2-L1)); when the rotation angle of the roller shaft is greater than the safety threshold value, it is adjusted by the deflection adjustment unit; S6, during the adjustment process of the deflection adjustment unit, the first driving member pushes the support frame to move in the vertical direction, and the support shaft, under the push of the support frame, causes the oiling box body to rotate relative to the drying box body until the drive roller is parallel to the drying roller shaft.

[0030] By adopting the above technical solution, the device drives the pressure rod to move up and down along the length direction of the adjustment hole through the cylinder, which is used to control the displacement height of the laser displacement sensor. The length measured by the laser displacement sensor is fed back to the PLC controller. The PLC controller adjusts the cylinder air intake according to the measurement results, controls the detection point of the laser displacement sensor, and improves the detection accuracy. According to the measurement results, by adjusting the displacement of the first driving member, the driving support frame pushes the oiling box body to rotate clockwise relative to the drying box body, compensates for the deflection difference between the driving roller and the drying roller, and realizes the adjustment of the parallelism of the transmission roller and the drying roller. The operation is simple.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. The deflection measurement unit uses non-contact laser beam distance measurement to avoid the impact on the extension roller's rotation and achieve non-destructive testing. By dynamically monitoring the extension roller's deflection value and real-time monitoring of the extension roller's bending deformation, abnormal deflection can be detected in time to prevent sudden failures.

[0033] 2. Real-time deflection data is connected to the PLC controller. When the deflection detection is invalid, the cylinder air intake is controlled and the detection position of the laser displacement sensor is adjusted. Through online feedback control, the cylinder operating parameters are dynamically adjusted to improve the deflection detection accuracy. When the deflection value exceeds the safety threshold, the PLC controller triggers the alarm function and stops the machine for detection in time, thereby improving the safety of equipment use.

[0034] 3. The length range of the adjustment hole can be used to measure the diameters of different extended rollers, making the deflection measurement unit more versatile;

[0035] 4. This detection device breaks the limitation of traditional technical means that contact measurement cannot achieve dynamic monitoring, and has strong adaptability to installation space;

[0036] 5. Deflection adjustment unit reduces the probability of stranding, improves the uniformity of strand oiling, and improves the mechanical properties of strand;

[0037] 6. The device has the advantages of unique structure, safety, reliability, high efficiency, green environmental protection, and intelligent measurement and control. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the traditional roller parallelism adjustment structure.

[0039] Figure 2 1 is a schematic diagram of the first structure of the roller parallelism measurement and control device of the embodiment.

[0040] Figure 3 2 is a schematic diagram of the second structure of the roller parallelism measurement and control device of the embodiment.

[0041] Figure 4 Schematic diagram of the structure of the deflection measuring unit in the embodiment.

[0042] Figure 5 Schematic diagram of the deflection measurement unit in the embodiment.

[0043] Figure 6 2 is a schematic cross-sectional view of the deflection measuring unit in the embodiment.

[0044] Figure 7 yes Figure 6 X-partial magnified view.

[0045] Figure 8 yes Figure 6 A magnified view of the Y part.

[0046] Figure 9 3 is a schematic diagram of the third structure of the roller parallelism measurement and control device of the embodiment.

[0047] Figure 10 yes Figure 9 Z partial magnification.

[0048] Figure 11 yes Figure 3 AA cross-sectional view.

[0049] Figure 12 yes Figure 11 A magnified view of the M part.

[0050] Figure 13 It is a structural diagram of the deflection adjustment unit.

[0051] Description of reference numerals:

[0052] 1. Oiling box; 11. Drive roller; 12. First bolt; 13. Second bolt; 14. Pin; 15. Oiling mounting plate; 2. Drying box; 21. Drying roller; 22. Slot; 23. Drying mounting plate; 3. Deflection measuring unit; 31. Roller sleeve; 311. Upper mounting portion; 312. Lower mounting portion; 3121. Cavity; 3122. Adjustment hole; 313. Boss; 314. Connecting sleeve; 32. Compression spring; 321. Connecting flange; 33. Pressure rod; 331. First receiving groove; 332. Second receiving groove Slot; 34, actuator assembly; 341, actuator frame; 3411, first plug-in part; 3412, second plug-in part; 342, support plate; 3421, limit sleeve; 3422, screw; 343, cylinder; 35, laser displacement sensor; 4, deflection adjustment unit; 41, drive assembly; 411, support frame; 4111, first mounting hole; 4112, second mounting hole; 4113, baffle slot; 4114, guide countersunk hole; 412, third bolt; 413, support shaft; 414, baffle; 415, fourth bolt. DETAILED DESCRIPTION

[0053] The following is combined with Figure 2-13 This application is described in further detail.

[0054] The present application discloses a device and method for measuring and controlling the parallelism of rollers of an oiling dryer.

[0055] Reference Figure 2 and Figure 3 ,

[0056] A device for measuring and controlling roller parallelism in an oiling dryer includes a drying chamber 2, an oiling chamber 1, a deflection measuring unit 3, and a deflection adjusting unit 4. The oiling chamber 1 is rotatably connected to the drying chamber 2. The deflection measuring unit 3 measures the deflection of the extended roller. Based on the deflection difference between the drive roller 11 on the oiling chamber 1 and the drying roller 21 on the drying chamber 2, the deflection adjusting unit 4 adjusts the rotation of the oiling chamber 1 relative to the drying chamber 2, ensuring that the drive roller 11 and the drying roller 21 are parallel.

[0057] Specifically,

[0058] Reference Figure 4 、 Figure 5 and Figure 6 .

[0059] The deflection measurement unit 3 includes a roller sleeve 31, an elastic member, a pressure rod 33, a laser displacement sensor 35, an actuator 34, and a PLC controller. The roller sleeve 31 is mounted on the extended roller to be measured. It is concentric with the side of the housing in which the roller is mounted, and the inner diameter of the roller sleeve 31 is larger than the outer diameter of the roller to be measured. The pressure rod 33 is tangent to the maximum diameter of the lower half of the extended roller to be measured. The laser displacement sensor 35 is mounted on the pressure rod 33 and parallel to the length of the roller to be measured. The laser displacement sensor 35 is electrically connected to the PLC controller. The elastic member is mounted within the roller sleeve 31. The actuator 34 is used to control the pressure rod 33 to adjust the distance radially away from the extended roller to be measured, allowing the laser displacement sensor 35 to measure at different locations. The PLC controller determines the rotational angle of the extended roller to be measured based on the measurement data from these different locations.

[0060] When the laser displacement sensor 35's measurement interval falls within the range between measurement points A and B, the point is considered valid. Based on the longitudinal distances L1 and L2 of measurement points 1 and 2, and the vertical displacement y value of the measurement point (the y value is provided by actuator 34, which is electrically connected to the PLC controller), the rotation angle of the extension roller can be calculated as a = arctan(y / (L2-L1)). When the roller's rotation angle exceeds the safety threshold, the deflection adjustment unit 4 adjusts the angle. When the measurement point is outside measurement point B, that is, when the measurement point reaches measurement point 3, the point is considered invalid. At this point, the PLC controller controls actuator 34 to drive pressure rod 33 toward the axis of the extension roller to be measured, until it is within the range between measurement points A and B, ensuring the validity of the measurement point.

[0061] This device uses non-contact laser beam ranging to dynamically monitor the deflection of the extended roller under test. This allows real-time monitoring of the roller's bending deformation, enabling timely detection of abnormal deflection and preventing unexpected failures. If the deflection exceeds the safety threshold, the deflection adjustment unit 4 promptly adjusts the deflection, improving equipment safety. This detection device overcomes the limitations of traditional contact-based measurement methods, which lack dynamic monitoring capabilities, and offers strong adaptability to various installation spaces.

[0062] Specifically,

[0063] Reference Figure 6 and Figure 7 and Figure 8 ,

[0064] The roller sleeve 31 has an inverted U-shaped symmetrical structure, including an upper mounting portion 311 and two lower mounting portions 312. The upper mounting portion 311 is located on the side close to the upper circumference of the extended roller to be measured. The upper mounting portion 311 is welded with a protruding column 313, and the lower mounting portion 312 is provided with a cavity 3121 for accommodating an elastic member. The elastic member is a compression spring 32, and the depth of the cavity 3121 is greater than the free extension of the compression spring 32.

[0065] A connecting flange 321 is fixed to the side of the compression spring 32 away from the roller sleeve 31. A connecting sleeve 314 is provided on the lower mounting portion 312. The connecting flange 321 is sleeved onto the outside of the connecting sleeve 314. The connecting flange 321 and the connecting sleeve 314 are threaded together, and the connection length of the connecting flange 321 is shorter than the thread length of the connecting sleeve 314. This ensures that the connecting flange 321 is fully screwed onto the outside of the connecting sleeve 314, ensuring a reliable connection. The connecting flange 321 and the connecting sleeve 314 are detachably connected, making assembly and disassembly easy.

[0066] The lower mounting portion 312 has an adjustment hole 3122 extending therethrough, perpendicular to the axis of the extended roller to be measured. A pressure rod 33 is inserted through the adjustment holes 3122 of the two lower mounting portions 312 and slides up and down within the two adjustment holes 3122. A laser displacement sensor 35 is detachably connected to the middle portion of the pressure rod 33, near the side of the extended roller to be measured. When the compression spring 32 is in a free state, the upper end surface of the pressure rod 33, facing away from the compression spring 32, should be higher than the lower vertex of the extended roller. This ensures that when the pressure rod 33 is tangential to the extended roller to be measured, the compression spring 32 is compressed, ensuring that the laser displacement sensor 35 is positioned directly below the extended roller to be measured, thereby improving the effectiveness of the measurement point.

[0067] The length of adjustment hole 3122 is parallel to the direction of movement of pressure rod 33. The range of lengths of adjustment hole 3122 can be used to measure the diameters of different extension rollers, making the deflection measurement unit 3 more versatile. When adjustment hole 3122 is in the upper limit position, its height from the roller axis is less than the radius of the extension roller, ensuring that the movement of pressure rod 33 is tangential to the extension roller being measured, facilitating detection of the measurement point.

[0068] Reference Figure 4 、 Figure 5 and Figure 6 ,

[0069] The actuator assembly 34 includes an actuator frame 341, a second driving member and a support plate 342. The actuator frame 341 is fixed on both sides of the support plate 342 and is equidistant from the center of the actuator frame 341. The second driving member is a cylinder 343, which is used to drive the actuator frame 341 to reciprocate up and down. The displacement of the actuator frame 341 is controlled by controlling the air intake of the cylinder 343. The PLC controller adjusts the moving distance of the actuator frame 341 according to the displacement measured by the laser displacement sensor 35, realizing intelligent measurement and control with higher precision.

[0070] Specifically,

[0071] The execution frame 341 includes a first plug-in portion 3411 and a second plug-in portion 3412. A first accommodating groove 331 connected to the first plug-in portion 3411 is provided on the pressure rod 33. The first accommodating groove 331 is a V-shaped groove. The V-shaped groove is used to limit the radial movement of the first plug-in portion 3411, and the V-shaped groove disperses the load through symmetrical contact, reduces local stress concentration, avoids deformation of the execution frame 341, and enhances the reliability of the connection; the second accommodating groove 332 connected to the second plug-in portion 3412, the second accommodating groove 332 is a square flat groove, so that the second accommodating groove 332 is a free end. When the position of the first plug-in portion 3411 is determined, the position of the second plug-in portion 3412 can be determined. The setting of the square groove reduces the manufacturing error of the execution frame 341 and has high installation reliability. The V-shaped groove has an automatic centering function to reduce clamping time.

[0072] The included angle of the first accommodating groove 331 is 60 to 90 degrees. On the one hand, it improves the connection reliability of the first plug-in part 3411, and on the other hand, it ensures the convenience of assembly and disassembly of the first plug-in part 3411; the length of the second accommodating groove 332 along the length direction of the pressure rod 33 is greater than the length of the second plug-in part 3412, and the width of the second accommodating groove 332 along the length direction of the extending roller shaft is equal to the width of the second plug-in part 3412.

[0073] A limiting sleeve 3421 is provided on the side of the support plate 342 near the roller sleeve 31. The limiting sleeve 3421 is sleeved on the boss 313 and moves up and down along the length of the boss 313. The limiting sleeve 3421 is arranged so that the first plug-in portion 3411 and the second plug-in portion 3412 are symmetrically arranged on both sides of the roller sleeve 31, which is used to position the actuator 341. A screw 3422 is welded to the side of the support plate 342 away from the limiting sleeve 3421. The axis of the screw 3422 is collinear with the axis of the fiber sleeve. The cylinder 343 is threadedly connected to the screw 3422, which can ensure that the force center of the cylinder 343 passes through the axis of the limiting sleeve 3421, thereby improving the uniformity of the force applied to the support frame 411 and improving the accuracy of the detection.

[0074] Reference Figure 3 、 Figure 9 and Figure 10 ,

[0075] The deflection adjustment unit 4 includes a driving assembly 41 for driving the oiling box 1 to rotate around the drying box 2. The driving assembly 41 includes a support frame 411 and a first driving member. The support frame 411 is provided with a support shaft 413. The first driving member is a third bolt 412.

[0076] The oiling housing 1 is provided with an oiling mounting plate 15, and the drying housing 2 is provided with a drying mounting plate 23. A pin 14 is provided on both the oiling mounting plate 15 and the drying mounting plate 23 near the drive roller 11, enabling the oiling housing 1 to rotate relative to the drying housing 2. A slot 22 is provided in the oiling mounting plate 15. The length of the slot 22 is collinear with the rotation point of the oiling housing 1, and the slot 22 is located diagonally opposite the rotation point of the oiling housing 1. The support shaft 413 is embedded in the slot 22, minimizing the axial force required when the third bolt 412 drives the support shaft 413 to push the oiling housing 1, thereby reducing the contact stress at the interface between the support shaft 413 and the drying housing 2.

[0077] Specifically,

[0078] Reference Figure 11 、 Figure 12 and Figure 13 ,

[0079] The support frame 411 is a symmetrical U-shaped structure. A first mounting hole 4111 and a second mounting hole 4112 are provided on the support frame 411, which pass through the support shaft 413. A baffle groove 4113 is provided on the side of the support frame 411 close to the second mounting hole 4112. A baffle 414 is provided on the baffle groove 4113. The baffle 414 is respectively connected to the support frame 411 and the support shaft 413 through a fourth bolt 415. Since the baffle groove 4113 is embedded in the support frame 411, the overall size of the device is reduced, preventing the baffle 414 from interfering with other parts during the movement of the support frame 411.

[0080] A non-through guide countersunk hole 4114 is defined at the bottom of the support frame 411. The upper end of a third bolt 412 is embedded in the guide countersunk hole 4114 and abuts the bottom surface of the guide countersunk hole 4114, ensuring the linear motion of the support frame 411 and improving its motion reliability. The third bolt 412 is threadedly connected to the drying mounting plate 23 near the head. Based on the deflection value measured by the deflection detection unit, by tightening the third bolt 412 (the third bolt 412 is threadedly connected to the drying mounting plate 23), the third bolt 412 pushes the support frame 411 upward along its axis. Driven by the support frame 411, the support shaft 413 rotates clockwise relative to the drying chamber 2 until the drive roller 11 and the drying roller 21 are aligned. The tightening of the second bolt 13 is then stopped. This method compensates for the deflection difference between the drive roller 11 and the drying roller, achieving adjustment of the parallelism of the drive roller 11 and the drying roller 21. The operation is simple.

[0081] The present application relates to a device and method for measuring and controlling the parallelism of rollers of an oiling dryer, which comprises six steps:

[0082] The first step is to install the roller sleeve 31 and the extended roller to be tested concentrically on the oiling box 1 and the drying box 2, with the length direction of the lower mounting portion 312 of the roller sleeve 31 being in the vertical direction;

[0083] Step 2: Insert the pressure rod 33 into the two adjustment holes 3122 so that the beam direction of the laser displacement sensor 35 is consistent with the direction of the cantilever extending from the roller shaft;

[0084] Step 3: Install the compression spring 32 into the cavity 3121 and connect the connecting flange 321 to the roller sleeve 31. Under the action of the compression spring 32, the pressure rod 33 is tangent to the extended roller shaft.

[0085] Step 4: Sleeve the limiting sleeve 3421 of the actuator 341 into the boss 313 of the roller sleeve 31, install the first plug-in portion 3411 into the first receiving groove 331, and install the second plug-in portion 3412 into the second receiving groove 332. The cylinder 343 is fixed to the drying box 2 and is used to drive the actuator 341 to reciprocate up and down.

[0086] Step 5: Select two measuring points within the effective range and use the laser displacement sensor 35 to measure the longitudinal distances L1 and L2 of the two measuring points. Based on the pushing distance of the cylinder 343, the vertical displacement y of the two measuring points is obtained. The rotation angle of the extended roller can be calculated as a = arctan(y / (L2-L1)). When the rotation angle of the roller is greater than the safety threshold, the deflection adjustment unit 4 is used to adjust the deflection.

[0087] Step 6. During the adjustment of the deflection adjustment unit 4, the first driving member pushes the support frame 411 to move in the vertical direction. Under the push of the support frame 411, the support shaft 413 causes the oiling box body 1 to rotate relative to the drying box body 2 until the drive roller 11 is parallel to the axis of the drying roller 21.

[0088] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A roller parallelism measurement and control device for an oiling dryer, characterized in that: It comprises a drying box (2), an oiling box (1) rotatably connected to the drying box (2), a deflection measuring unit (3) and a deflection adjusting unit (4). The drying box body (2) is provided with a slotted hole (22), the length direction of the slotted hole (22) is collinear with the rotation point of the upper oil box body (1), and the slotted hole (22) is provided at a diagonal position of the rotation point of the upper oil box body (1). The deflection adjustment unit (4) includes a driving assembly (41) for driving the oiling box (1) to rotate around the drying box (2); the driving assembly (41) includes a support frame (411) and a first driving member for driving the support frame (411) to move linearly; a support shaft (413) is provided on the support frame (411); and the support shaft (413) is embedded in the slot (22).

2. The roller parallelism measuring and controlling device for an oil drying machine according to claim 1, characterized in that: The support shaft (413) is located at the upper end of the support frame (411), and a baffle (414) is detachably connected to the middle of the support shaft (413), and the length of the baffle (414) is greater than the diameter of the slot hole (22).

3. The roller parallelism measuring and controlling device for an oil drying machine according to claim 2, characterized in that: The support frame (411) is a symmetrical U-shaped structure. A first mounting hole (4111) and a second mounting hole (4112) are provided on the support frame (411) and are penetrated by the support shaft (413). A baffle groove (4113) is provided on one side of the support frame (411) close to the second mounting hole (4112). The baffle (414) is embedded in the baffle groove (4113). The baffle (414) is fixed to the support frame (411) and the support shaft (413) in a detachable manner.

4. The roller parallelism measuring and controlling device for an oil drying machine according to claim 3, characterized in that: A non-through guide countersunk hole (4114) is provided at the bottom of the support frame (411), and the upper end of the first driving member is embedded in the guide countersunk hole (4114) and abuts against the bottom end surface of the guide countersunk hole (4114).

5. The roller parallelism measuring and controlling device for an oil drying machine according to claim 1, characterized in that: The deflection measuring unit (3) comprises a roller sleeve (31) fixed to the drying box (2), an elastic member embedded in the roller sleeve (31), and an actuator (34). The roller sleeve (31) is sleeved on one side of the fixed end of the extended roller shaft, and the inner diameter of the roller sleeve (31) is larger than the outer diameter of the extended roller shaft. The roller sleeve (31) comprises an upper mounting portion (311) and two lower mounting portions (312) away from the upper mounting portion (311). The two lower mounting portions (312) are each provided with a cavity (3121) for accommodating an elastic member. The elastic member is fixed on the roller sleeve (31) at one end away from the upper mounting portion (311), and a pressure rod (33) is provided at one end of the elastic member close to the upper mounting portion (311). Adjustment holes (3122) for accommodating the pressure rod (33) are provided in the length direction of the two lower mounting portions (312), and the pressure rod (33) is connected to the two adjustment holes (3122) by sliding up and down. The actuator (34) is used to drive the pressure rod (33) to perform up and down reciprocating motion along the two adjustment holes (3122); a laser displacement sensor (35) is provided on the pressure rod (33); the light beam direction of the laser displacement sensor (35) is consistent with the axial direction of the roller sleeve (31), and the laser displacement sensor (35) is located directly below the axis of the roller sleeve (31); the laser displacement sensor (35) and the actuator (34) are respectively electrically connected to a PLC controller.

6. The roller parallelism measuring and controlling device for an oil drying machine according to claim 5, characterized in that: The execution assembly (34) includes an execution frame (341) and a second driving member that drives the execution frame (341) to move back and forth up and down. The execution frame (341) includes a first plug-in portion (3411) and a second plug-in portion (3412). The pressure rod (33) is provided with a first receiving groove (331) connected to the first plug-in portion (3411) and a second receiving groove (332) connected to the second plug-in portion (3412). The first receiving groove (331) is a V-shaped groove, and the second receiving groove (332) is a square flat groove.

7. The roller parallelism measuring and controlling device for an oil drying machine according to claim 6, characterized in that: The upper mounting portion (311) of the roller sleeve (31) is fixed with a boss (313), and the actuator (34) further comprises a support plate (342), the support plate (342) being close to one side of the roller sleeve (31) and connected to a limiting sleeve (3421) for accommodating the boss (313), the second driving member being mounted on the side of the support plate (342) away from the roller sleeve (31), and the force application center of the second driving member passing through the axis of the limiting sleeve (3421), and the second driving member being a cylinder (343).

8. The roller parallelism measuring and controlling device for an oil drying machine according to claim 7, characterized in that: The elastic member is provided with a connecting flange (321), and the lower mounting portion (312) is provided with a connecting sleeve (314). The connecting flange (321) and the connecting sleeve (314) are detachably connected, and the connection length of the connecting flange (321) is shorter than the length of the connecting sleeve (314).

9. The roller parallelism measuring and controlling device for an oil drying machine according to claim 8, characterized in that: The elastic member is a compression spring (32), the depth of the cavity (3121) is greater than the free extension of the compression spring (32), and when the compression spring (32) is in a free state, the upper end surface of the pressure rod (33) away from the compression spring (32) is higher than the lower vertex of the extended roller shaft.

10. A method for measuring and controlling the parallelism of rollers of an oil drying machine, using the device for measuring and controlling the parallelism of rollers of an oil drying machine according to any one of claims 1 to 9, comprising the following steps: S1. Install the roller sleeve (31) and the extended roller to be tested concentrically on the box body, with the length direction of the lower mounting portion (312) of the roller sleeve (31) being in the vertical direction; S2, inserting the pressure rod (33) into the two adjustment holes (3122), and the direction of the light beam of the laser displacement sensor (35) is consistent with the direction of the cantilever extending from the roller shaft; S3, installing the compression spring (32) into the mold cavity (3121), connecting the connecting flange (321) to the roller sleeve (31), and under the action of the compression spring (32), the pressure rod (33) is tangent to the extended roller shaft; S4. The limiting sleeve (3421) of the execution frame (341) is sleeved into the convex column (313) of the roller sleeve (31), the first plug-in portion (3411) is installed in the first receiving groove (331), the second plug-in portion (3412) is installed in the second receiving groove (332), and the cylinder (343) is fixed on the drying box (2) and is used to drive the execution frame (341) to reciprocate up and down; S5. Two measuring points are taken within the effective interval, and the distances L1 and L2 of the two measuring points in the longitudinal direction are measured by the laser displacement sensor (35). The vertical displacement y value of the two measuring points is obtained according to the pushing distance of the cylinder (343). The rotation angle of the extending roller can be calculated as a=arctan(y / (L2-L1)). When the rotation angle of the roller is greater than the safety threshold value, the deflection adjustment unit (4) is used to adjust the angle. S6. During the adjustment process of the deflection adjustment unit (4), the first driving member pushes the support frame (411) to move in the vertical direction, and the support shaft (413) is pushed by the support frame (411) to rotate the oiling box (1) relative to the drying box (2) until the drive roller (11) and the drying roller (21) are parallel to each other.

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