Roll gap correction tool and roll gap correction method

Abstract

The present application provides a kind of roll gap correction tool and roll gap correction method, it is suitable for the straightening machine comprising two rollers. Wherein, roll gap correction tool is detachably arranged in one of the rollers, the roller has two end faces and the circumferential surface connected between the two end faces, and roll gap correction tool includes clamping unit and pressure sensing module. The opposite two ends of clamping unit are respectively used to be detachably arranged in one of the rollers. Pressure sensing module is arranged at the central position between the two ends of clamping unit, and pressure sensing module has contact part, and the contact part is used to contact the circumferential surface. The present application also provides a roll gap correction method using roll gap correction tool.

Description

[0001] This application claims priority to Taiwan Patent Application No. 111104100, filed on January 28, 2022, entitled “Roll Gap Correction Tool and Roll Gap Correction Method”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of calibration technology for bar processing machinery, and in particular to a roller gap calibration tool. Background Technology

[0003] A straightening machine is a tool used to straighten workpieces by using upper and lower rollers arranged in a cross configuration. The straightening methods include the paper zeroing method and the standard test bar positioning method. The paper zeroing method involves placing paper between the upper and lower rollers, then bringing the rollers close together and clamping the paper until it cannot be pulled out by a person. In this state, the gap between the upper and lower rollers is set to zero, completing the zeroing correction of the upper and lower rollers.

[0004] The standard test bar positioning method involves placing a standard test bar between the upper and lower rollers, then bringing the upper and lower rollers closer together until there is no gap between them and the standard test bar, and then setting the gap value corresponding to this standard test bar in this state.

[0005] Therefore, it can be seen that the paper zeroing method involves human judgment on whether the paper can be removed. The judgment results will be different depending on the person making the judgment, so it is impossible to obtain a uniform correction value. As for the standard test bar positioning method, since the surfaces of the upper and lower rollers are curved, it is not easy to accurately position the standard test bar at the center position of the upper and lower rollers, which is prone to left and right or angular deviation. Furthermore, whether there is a gap between the upper and lower rollers and the standard test bar also needs to be judged by humans. Therefore, it is also very easy to cause positioning and correction errors.

[0006] Therefore, the applicant believes it is necessary to propose a roll gap correction tool and roll gap correction method that can unify the correction standard and avoid positioning errors. Summary of the Invention

[0007] To achieve the aforementioned objectives, this application proposes a roll gap correction tool suitable for a straightening machine comprising two rollers. The roll gap correction tool is detachably mounted on one of the rollers. The roller has two end faces and a circumferential surface connecting the two end faces. The roll gap correction tool includes a clamping unit and a pressure sensing module. The two opposite ends of the clamping unit are detachably mounted on one of the rollers. The pressure sensing module is located at the center between the two ends of the clamping unit and has a contact portion for contacting the circumferential surface.

[0008] In one embodiment, the aforementioned contact portion is symmetrically shaped along an axis of symmetry.

[0009] In one embodiment, the two opposite ends of the aforementioned clamping unit are fixed to the two end faces of one of the rollers.

[0010] In one embodiment, one of the circumferential surface and the contact portion of the aforementioned roller is a concave arc surface with a first curvature, and the other is a convex arc surface with a second curvature, wherein the first curvature is smaller than the second curvature.

[0011] In one embodiment, the circumferential surface of the aforementioned roller is a convex arc surface with a second curvature, while the contact portion is a plane.

[0012] In one embodiment, the aforementioned clamping unit includes a base, two arms and two fixing parts. One end of each of the two arms is disposed on the base, and the other end of each of the two arms extends in opposite directions. A pressure sensing module is disposed on the base, and the two fixing parts are disposed on the other ends of the two arms respectively.

[0013] In one embodiment, the aforementioned roller gap correction tool further includes a gear, which is disposed on a base, and two arms are disposed at one end of the base, each having a plurality of teeth, the teeth of the two arms respectively meshing with the opposite sides of the gear.

[0014] In one embodiment, the aforementioned roll gap correction tool further includes a displacement sensor disposed on the gear to sense the rotation of the gear.

[0015] In one embodiment, the aforementioned pressure sensing module includes a first pressure sensor disposed at the center of the contact portion.

[0016] In one embodiment, the aforementioned pressure sensing module further includes a plurality of second pressure sensors, which are arranged at equal central angle intervals with the center of the contact portion as the center.

[0017] In one embodiment, the two fixing parts are displaceably disposed on the two arms, and the displacement paths of the two fixing parts are parallel to the axis of symmetry.

[0018] In one embodiment, the aforementioned two fixed parts each include a first body segment, which is displaceably inserted through the arm.

[0019] In one embodiment, the aforementioned two fixing parts further include a second body segment and a third body segment, the second body segment being connected to the first body segment and the third body segment being connected to the second body segment, the third body segment having a V-shaped groove for accommodating the spindle of each roller.

[0020] This application also proposes a roll gap correction method using the aforementioned roll gap correction tool, comprising an assembly step, a pressurization step, and a correction value definition step. In the assembly step, the roll gap correction tool is detachably assembled to one of the rollers of the straightening machine, with the pressure sensing module contacting the circumferential surface of the roller, and the pressure sensing module's contact portion contacting the center position between the two ends of the circumferential surface. In the pressurization step, the two rollers of the straightening machine are brought closer together and pressure is applied to the pressure sensing module, causing the pressure value sensed by the pressure sensing module to reach a preset pressure value. In the correction value definition step, the height value between the two rollers is stored as the roll gap reference value corresponding to the preset pressure value.

[0021] This allows for a unified standard for roll gap correction and avoids positioning errors between the rolls and the rollers. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the appearance of the first embodiment of the roll gap correction tool of this application.

[0023] Figure 2 This is a schematic diagram of the roller gap correction tool of this application assembled on a roller.

[0024] Figure 3 This is a partial structural schematic diagram of the second embodiment of the roll gap correction tool of this application.

[0025] Figure 4 This is a partial structural schematic diagram of the third embodiment of the roll gap correction tool of this application.

[0026] Figure 5 This is a partial structural diagram of an embodiment of the roller gap correction tool of this application, assembled on a roller.

[0027] Figure 6 This is a side view schematic diagram of an embodiment of the roller gap correction tool of this application, used in conjunction with rollers of different outer diameters.

[0028] Figure 7 This is a side view of an embodiment of the roller gap correction tool of this application, assembled on a roller.

[0029] Figure 8 This is a partial structural diagram of an embodiment of the roller gap correction tool of this application, which can be used on rollers of different lengths by adjusting the gears.

[0030] Figure 9 This is a flowchart of one embodiment of the roll gap correction method of this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 10: Roller;

[0033] 11: End face;

[0034] 12: Circumference;

[0035] 10A: Upper roller;

[0036] 11A: End face;

[0037] 12A: Peripheral surface;

[0038] 13: Mandrel;

[0039] 10B: Lower roller;

[0040] 11B: End face;

[0041] 12B: Peripheral surface;

[0042] 20: Clamping unit;

[0043] 21: Base;

[0044] 211: Perforation;

[0045] 212: Positioning hole;

[0046] 22: Arm;

[0047] 221: Teeth;

[0048] 23: Fixing part;

[0049] 231: First segment;

[0050] 232: Second body segment;

[0051] 233: Third segment;

[0052] 2331: V-groove;

[0053] 24: Positioning components;

[0054] 25: Gear;

[0055] 30: Pressure sensing module;

[0056] 31: Contact part;

[0057] 311: Surface;

[0058] 32: First pressure sensor;

[0059] 33: Second pressure sensor;

[0060] 40: Displacement sensor;

[0061] X: Axis of symmetry;

[0062] Y: Length direction;

[0063] R: Radial;

[0064] S01: Assembly steps;

[0065] S02: Pressurization step;

[0066] S03: Steps for defining correction values. Detailed Implementation

[0067] Please refer to the following: Figure 1 , Figure 1 This is a schematic diagram of the appearance of a first embodiment of the roll gap correction tool of this application. The roll gap correction tool is suitable for roll gap correction of a straightening machine, which includes two rollers 10 arranged at a cross angle. Further, the two rollers 10 are positioned at different heights, forming a roll gap between them. For clarity, the two rollers 10 are hereinafter referred to as upper roller 10A and lower roller 10B. Upper roller 10A has a concave roller surface, while lower roller 10B has a convex roller surface, but this application is not limited thereto. In other embodiments, upper roller 10A may have a convex roller surface, while lower roller 10B may have a concave roller surface.

[0068] The roll gap correction tool is installed on one of the rollers 10 for use. (See also...) Figure 2 In some embodiments, the roll gap correction tool is mounted on the upper roller 10A, but this application is not limited thereto. In other embodiments, the roll gap correction tool may also be mounted on the lower roller 10B.

[0069] See Figure 2 The following description uses the example of a roller gap correction tool installed on the upper roller 10A. In these embodiments, the upper roller 10A and the lower roller 10B are both cylindrical bodies, and the upper roller 10A has two end faces 11A and a peripheral surface 12A connecting the two end faces 11A. Here, the peripheral surface 12A of the upper roller 10A is an arc-shaped concave surface to serve as a concave roller surface.

[0070] The lower roller 10B is a cylindrical body, and has two end faces 11B and a peripheral surface 12B connecting the two end faces 11B. Here, the peripheral surface 12B of the lower roller 10B is an arcuate convex surface to serve as a convex roller surface.

[0071] The clamping unit 20 is adapted to clamp the upper roller 10A for assembly onto the upper roller 10A. In some embodiments, the clamping unit 20 is integrally formed to fit the upper roller 10A of a fixed length, but this application is not limited thereto. In these embodiments, the clamping unit 20 is U-shaped, and both ends of the clamping unit 20 abut against the two end faces 11A of the upper roller 10A to clamp and assemble onto the upper roller 10A.

[0072] The pressure sensing module 30 is located at the center of the overall clamping unit 20, so that when the clamping unit 20 is assembled to the upper roller 10A, the pressure sensing module 30 is positioned relative to the center of the upper roller 10A.

[0073] See Figures 1 to 3 The pressure sensing module 30 has a contact portion 31, which is used to contact the upper roller 10A to sense the pressure of the upper roller 10A. The shape of the contact portion 31 is a symmetrical shape formed symmetrically along the axis of symmetry X.

[0074] In some embodiments, the circumferential surface 12 of the roller 10 and the contact portion 31 are in a convex-arc and concave-arc fit, that is, when the circumferential surface 12 is a convex-arc surface, the contact portion 31 is a concave-arc surface; and when the contact portion 31 is a convex-arc surface, the circumferential surface 12 is a concave-arc surface. In these embodiments, the concave-arc surface has a first curvature, and the convex-arc surface has a second curvature, and the first curvature is smaller than the second curvature.

[0075] In embodiments where the circumferential surface 12A of the upper roller 10A is a concave arc surface, the contact portion 31 has a convex arc-shaped surface 311. In these embodiments, the circumferential surface 12A of the upper roller 10A has a first curvature, while the surface 311 of the contact portion 31 has a second curvature, the first curvature being smaller than the second curvature. This ensures that when the pressure sensing module 30 contacts the circumferential surface 12A of the upper roller 10A with the surface 311 of the contact portion 31, a point contact is achieved by the midpoint of the arc of the surface 311 of the contact portion 31 contacting the midpoint of the arc of the circumferential surface 12A, thereby avoiding gap problems.

[0076] Since the pressure sensing module 30 is located at the center between the two ends of the clamping unit 20, when the clamping unit 20 is assembled onto the upper roller 10A and its two ends abut against the two end faces 11A of the upper roller 10A, the pressure sensing module 30 can be aligned with the center of the upper roller 10A. Therefore, when the circumferential surface 12A of the upper roller 10A is a concave arc surface and is close to the contact pressure sensing module 30, the pressure sensing module 30 can contact the midpoint of the arc of the surface 311 of the contact portion 31 with the midpoint of the arc of the circumferential surface 12A. This allows for accurate measurement of the downward pressure of the upper roller 10A. In these embodiments, the pressure sensing module 30 includes a first pressure sensor 32, the position of which corresponds to the midpoint of the arc of the surface 311 of the contact portion 31.

[0077] In some embodiments, the clamping unit 20 is also adapted to clamp the lower roller 10B for assembly. In these embodiments, the peripheral surface 12B of the lower roller 10B is a convex arc surface, and the surface 311 of the contact portion 31 of the pressure sensing module 30 is in point contact with the convex arc surface. In addition to being a concave arc surface, the surface 311 of the contact portion 31 of the pressure sensing module 30 can also be a planar surface, and this application is not limited thereto.

[0078] In embodiments where the surface 311 of the contact portion 31 is concave, the circumferential surface 12B of the lower roller 10B has a first curvature, while the surface 311 of the contact portion 31 has a second curvature, with the first curvature being greater than the second curvature. This ensures that when the pressure sensing module 30 contacts the circumferential surface 12B of the lower roller 10B with the surface 311 of the contact portion 31, a point contact is achieved by the midpoint of the arc of the surface 311 of the contact portion 31 contacting the midpoint of the arc of the circumferential surface 12B, thereby avoiding gap problems.

[0079] See Figure 2 and cooperate Figure 9 The following describes the method for adjusting the roll gap using the roll gap adjustment tool of this application in a straightening machine. The roll gap adjustment method includes an assembly step S01, a pressure application step S02, and a correction value definition step S03.

[0080] Assembly step S01 involves assembling the roll gap correction tool onto one of the rollers 10 of the straightener. For example... Figure 2 In the illustrated embodiment, the gap correction tool is assembled onto the upper roller 10A. During assembly, the gap correction tool abuts against the two end faces 11A of the upper roller 10A with the fixing portions 23 at both ends of the clamping unit 20, while the pressure sensing module 30 contacts the circumferential surface 12A of the upper roller 10A with its contact portion 31. In this step, the pressure sensing module 30 only needs to make contact with the upper roller 10A; that is, the pressure sensing module 30 only makes point contact with the circumferential surface 12A of the upper roller 10A. Since the pressure sensing module 30 is located at the center of the overall clamping unit 20, the contact portion 31 of the pressure sensing module 30 can contact the midpoint of the arc of the circumferential surface 12A of the upper roller 10A.

[0081] In the pressurization step S02, the two rollers 10 of the straightener are brought closer together and pressure is applied to the pressure sensing module 30, so that the pressure value sensed by the pressure sensing module 30 reaches the default value. In this step, as the pressure applied to the pressure sensing module 30 increases, the pressure between the upper roller 10A and the pressure sensing module 30 causes the contact portion 31 of the pressure sensing module 30 to elastically deform corresponding to the peripheral surface 12A of the upper roller 10A. The contact mode of the contact portion 31 contacting the peripheral surface 12A gradually changes from point contact to surface contact, and the pressure sensed by the pressure sensing module 30 gradually increases.

[0082] The correction value definition step S03 is to store the roll gap value between the upper roller 10A and the lower roller 10B in the control system of the straightener when the pressure value sensed by the pressure sensing module 30 reaches the default value. This roll gap value is used as the roll gap reference value corresponding to the aforementioned preset pressure value, thereby completing the correction.

[0083] As can be seen from the foregoing, the roller gap correction tool of this application can be used to correct the roller gap of the straightening machine. After the roller gap correction tool is installed on the roller 10, it can ensure that the pressure sensing module 30 will not deviate from the center position of the roller 10, and the pressure value between the two rollers 10 is measured by the pressure sensing module 30, without producing errors from human operation or observation, thus improving the accuracy of correction.

[0084] See Figure 1 and Figure 2 In some embodiments, to accommodate rollers 10 of different lengths and outer diameters, and to ensure that the pressure sensing module 30 does not shift from the center position of the roller 10 after the roller gap correction tool is installed, in these embodiments, the roller 10 extends along the length direction Y, and the perpendicular length direction Y is defined as the radial direction R. The clamping unit 20 is a split structure and includes a base 21, two arms 22, and two fixing parts 23. The base 21 is positioned at the center position of the roller 10 in the length direction Y by adjusting the arms 22, and the base 21 is positioned at the center position of the roller 10 in the radial direction R by setting the fixing parts 23.

[0085] In these embodiments, the two arms 22 are of the same length and one end is respectively disposed on the base 21, while the other ends of the two arms 22 extend in opposite directions, and two fixing parts 23 are respectively disposed on the ends of each arm 22 away from the base 21. This positions the base 21 at the center of the overall clamping unit 20, and the overall clamping unit 20 is symmetrical about the base 21. When the clamping unit 20 is assembled on the upper roller 10A, the clamping unit 20 can abut against the two end faces 11A of the upper roller 10A with the two fixing parts 23 at both ends, thereby setting the clamping unit 20 assembly on the upper roller 10A.

[0086] In an embodiment where the clamping unit 20 includes a base 21, a pressure sensing module 30 is disposed on the base 21, thereby ensuring that the pressure sensing module 30 is located at the center between the fixing portions 23 at both ends of the clamping unit 20, and that the pressure sensing module 30 is positioned at the center between the two ends of the roller 10 when the clamping unit 20 is assembled to the roller 10.

[0087] In some embodiments where the clamping unit 20 includes a base 21, the shape of the base 21 varies depending on the shape of the roller 10 to further improve the stability and accuracy of the roller gap correction tool used in the straightening machine. For example, when the peripheral surface 12A of the upper roller 10A is a concave arc surface, the peripheral surface 12B of the lower roller 10B is a convex arc surface, and the contact portion 31 of the pressure sensing module 30 contacts the peripheral surface 12A of the upper roller 10A, the contact portion 31 is a convex arc surface, and the side of the base 21 facing the lower roller 10B is a plane or a concave arc surface that can form point contact with the peripheral surface 12B of the lower roller 10B.

[0088] When the circumferential surface 12A of the upper roller 10A is a concave arc surface, the circumferential surface 12B of the lower roller 10B is a convex arc surface, and the contact part 31 of the pressure sensing module 30 contacts the circumferential surface 12B of the lower roller 10B, the contact part 31 is a flat or concave arc surface, and the side of the base 21 facing the upper roller 10A is a convex arc surface that can form a point contact with the circumferential surface 12A of the upper roller 10A.

[0089] Therefore, when the gap correction tool is installed between the upper roller 10A and the lower roller 10B, there is no gap between the gap correction tool and the upper roller 10A and the lower roller 10B, which improves stability and accuracy.

[0090] See Figure 2 and cooperate Figure 4 and Figure 5 In some embodiments, one end of each of the two arms 22 is detachably disposed on the base 21. Specifically, the clamping unit 20 also includes two positioning members 24, and the base 21 has two through holes 211 and two positioning holes 212. In these embodiments, one end of each of the two arms 22 is displaceably inserted into the base 21 through the two through holes 211, and the position of each arm 22 inserted into the base 21 partially corresponds to the position of the positioning hole 212. Each positioning member 24 is inserted into the base 21 through the positioning hole 212 and positioned with the arm 22. In some embodiments, the positioning method of each positioning member 24 and the arm 22 may be, but is not limited to, clamping or locking. In this way, by changing the arms 22 of different lengths, upper rollers 10A of different lengths can be clamped accordingly.

[0091] See Figure 3 In some embodiments, to enable the two arms 22 to move synchronously, the clamping unit 20 further includes a gear 25, which is a co-moving gear located at the center of the base 21. In these embodiments, the portions of the two arms 22 extending into the base 21 are provided with multiple (at least two) teeth 221. When the two arms 22 extend into the base 21, the teeth 221 of the two arms 22 mesh with the opposite sides of the gear 25. In these embodiments, when the clamping unit 20 is to be assembled with upper rollers 10A of different lengths, such as... Figure 4 and Figure 5 As shown, as long as one arm 22 is moved, the arm 22 drives the gear 25 to rotate through its teeth 221. The gear 25 rotates and then drives the other arm 22 to move synchronously, thereby ensuring that the two arms 22 are displaced by the same distance, and ensuring that the base 21 and the pressure sensing module 30 remain in the central position of the overall clamping unit 20.

[0092] See Figure 1 and Figure 2In some embodiments, each roller 10 has a spindle 13 on each of its two end faces 11. The roller 10 is connected to the straightening machine via the spindle 13 and is driven by the straightening machine. In these embodiments, each fixing part 23 of the clamping unit 20 has a first body segment 231, a second body segment 232, and a third body segment 233 connected in sequence. The first body segment 231 is a cylinder. Each fixing part 23 is displaceably inserted into the arm part 22 via the first body segment 231. When each fixing part 23 is provided in the arm part 22, the space between the two fixing parts 23, the two arms 22, and the base 21 constitutes a space for accommodating the roller 10.

[0093] See Figure 6 and Figure 7 In these embodiments, the displacement direction of each fixing part 23 is perpendicular to the length extension direction of the arm part 22. Therefore, by adjusting the position of each fixing part 23, the space for accommodating the roller 10 can be adjusted accordingly to accommodate rollers 10 with different outer diameters.

[0094] In some embodiments, the second body segment 232 of the fixing portion 23 of the clamping unit 20 is a cylinder coaxial with the first body segment 231, and the outer diameter of the second body segment 232 is larger than the outer diameter of the first body segment 231. It should be noted that the form of the fixing portion 23 in the drawings of this application is only an embodiment for ease of explanation, and this application is not limited thereto. When the clamping unit 20 is assembled on the roller 10, the clamping unit 20 abuts against the end face 11 of the roller 10 with the arcuate surface of the second body segment 232 of each fixing portion 23. In this way, the second body segment 232 of each fixing portion 23 makes point contact with the end face 11 of the roller 10, reducing the contact resistance between the fixing portion 23 of the clamping unit 20 and the end face 11 of the roller 10, and improving the convenience of assembling and disassembling the roller 10.

[0095] In some embodiments, the second section 232 of the fixing part 23 of the clamping unit 20 provides a fixing effect to the end face 11 of the roller 10 through its own frictional force, but this application is not limited thereto.

[0096] In some embodiments, the second section 232 of the fixing part 23 of the clamping unit 20 is a magnet, thereby achieving a fixing effect by magnetic attraction to the end face 11 of the roller 10. In these embodiments, the second section 232 can be an electromagnet or a removable magnet to adjust its magnetic attraction force as needed.

[0097] In some embodiments, the third section 233 of the fixing part 23 of the clamping unit 20 can be a vacuum fixing structure, thereby achieving a fixing effect by adsorbing the third section 233 of the fixing part 23 onto the end face of the roller 10 through vacuum suction.

[0098] In some embodiments, the third segment 233 of the clamping unit 20 has a V-groove 2331. When the clamping unit 20 is assembled and used on the roller 10, the V-groove 2331 accommodates the spindle 13 on both end faces 11 of the roller 10. Therefore, even if the outer diameter of the spindle 13 changes when the outer diameter of the roller 10 is different, it can still be accommodated in the V-groove 2331, aligning the centerline of the V-groove 2331 with the center of the spindle 13. Figure 6 From a visual perspective, the base 21 is located at the center of the spindle 13 in the radial direction R.

[0099] See Figure 1 and Figure 3 In some embodiments, the contact portion 31 of the pressure sensing module 30 has a cross-shaped cross section. In these embodiments, the center position of the cross-shaped contact portion 31 corresponds to the center position of the base 21. This reduces the volume of the contact portion 31, lowers the weight of the pressure sensing module 30, and consequently reduces the weight of the overall clamping unit 20, improving ease of use.

[0100] See Figure 8 In some embodiments, the roll gap correction tool further includes a plurality of second pressure sensors 33, each second pressure sensor 33 being disposed on the base 21 and arranged at equal central angle intervals with the center of the contact portion 31 as the center. For example... Figure 8 In the illustrated embodiment, the roll gap correction tool is equipped with four second pressure sensors 33. Each second pressure sensor 33 is respectively disposed on the contact portion 31 at 0 degrees, 90 degrees, 180 degrees, and 270 degrees (intervals of 90 degrees) with the center of the contact portion 31 as the center. Thus, when the roll gap correction tool contacts the roller 10, and the contact between the roll gap correction tool and the roller 10 changes from point contact to surface contact, each second pressure sensor 33 can measure the pressure value. The pressure value measured by each second pressure sensor 33 can be used to determine whether there is a directional offset in the positioning between the roller 10 and the roll gap correction tool. This allows for real-time adjustment when the roller 10 is offset, ensuring the accuracy of the correction.

[0101] Of course, the shape of the contact portion 31 of the pressure sensing module 30 is not limited to a cross-shaped cross section; the shape of the contact portion 31 can also be set as a semi-circle to cover the entire surface of the base 21.

[0102] See Figure 8In some embodiments where a gear 25 is provided within the base 21, a displacement sensor 40 is also included, which is disposed on the gear 25 to sense the rotation of the gear 25. In these embodiments, the straightening machine includes a controller and a storage module. The displacement sensor 40 is signal-connected to the controller, and the storage module stores a basic value of the length of the roller 10 corresponding to the position of the gear 25. When the arm 22 is displaced, causing the gear 25 to rotate, the controller receives the rotation value of the gear 25 sensed by the displacement sensor 40 and converts it into the displacement value of the arm 22. Based on the basic value and the displacement value of the arm 22, the controller calculates the length of the clamped roller 10, thereby enabling the length of the roller 10 to be measured simultaneously while clamping the roller 10.

[0103] Although this application has disclosed some embodiments above, it is not intended to limit this application. Anyone with common knowledge in the relevant technical field may make some modifications and refinements without departing from the inventive concept and scope of this application. Therefore, the scope of patent protection of this application shall be determined by the claims defined in the appended specification.

Claims

1. A roller gap correction tool, characterized in that, A straightening machine comprising two rollers is provided, wherein the roller gap correction tool is detachably mounted on one of the rollers, the roller having two end faces and a circumferential surface connecting the two end faces, and each of the two end faces of the rollers having a mandrel; the roller gap correction tool comprises: A clamping unit, with its two opposite ends respectively detachably mounted on one of the rollers, the clamping unit includes a base, two arms and two fixing parts, one end of each of the two arms is respectively mounted on the base, and the two fixing parts are displaceably mounted on the other end of each of the two arms, and the displacement path of the two fixing parts is perpendicular to the length extension direction of the arms. The two fixing parts also include V-grooves for accommodating the spindle of each of the rollers; as well as A pressure sensing module is disposed at the center between the two ends of the clamping unit. The pressure sensing module has a contact portion for contacting the peripheral surface.

2. The roller gap correction tool as described in claim 1, characterized in that, The contact portion is symmetrically formed along an axis of symmetry.

3. The roller gap correction tool as described in claim 1, characterized in that, The two opposite ends of the clamping unit are fixed to the two end faces of one of the rollers.

4. The roll gap correction tool as described in claim 1 or 2, characterized in that, The roller's circumferential surface and the contact portion are both concave arc surfaces with a first curvature and convex arc surfaces with a second curvature, wherein the first curvature is less than the second curvature.

5. The roller gap correction tool as described in claim 1, characterized in that, The circumferential surface of the roller is a convex arc surface with a second curvature, and the contact portion is a plane.

6. The roll gap correction tool as described in claim 1, characterized in that, The other ends of the two arms of the clamping unit extend in opposite directions, and the pressure sensing module is disposed on the base.

7. The roller gap correction tool as described in claim 6, characterized in that, It also includes a gear, which is disposed on the base. The two arms are disposed at one end of the base and each has a plurality of teeth. The plurality of teeth of the two arms respectively mesh with the opposite sides of the gear.

8. The roll gap correction tool as described in claim 7, characterized in that, It also includes: a displacement sensor disposed on the gear to sense the rotation of the gear.

9. The roller gap correction tool as described in claim 1, characterized in that, The pressure sensing module includes a first pressure sensor, which is located at the center of the contact portion.

10. The roll gap correction tool as described in claim 9, characterized in that, The pressure sensing module also includes a plurality of second pressure sensors, which are arranged at equal central angle intervals with the center of the contact portion as the center.

11. The roller gap correction tool as described in claim 1, characterized in that, The two fixed parts each include a first body segment, which is displaceably inserted into the arm.

12. The roll gap correction tool as described in claim 11, characterized in that, The two fixing parts further include a second body segment and a third body segment, wherein the second body segment is connected to the first body segment and the third body segment is connected to the second body segment.

13. A method for correcting a roll gap using the roll gap correction tool as described in claim 1, characterized in that, Include: In the assembly step, the gap correction tool is movably assembled to one of the rollers of the straightening machine, the pressure sensing module contacts the circumferential surface of the roller, and the pressure sensing module contacts the center position between the two ends of the circumferential surface with the contact part. In the pressurization step, the two rollers of the straightening machine approach each other and apply pressure to the pressure sensing module, so that the pressure value sensed by the pressure sensing module reaches the preset pressure value. as well as The calibration value definition step involves storing the height value between the two rollers as the roller gap reference value corresponding to the preset pressure value.

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