Automatic torsion adjusting equipment of rotating shaft module

Abstract

The utility model discloses automatic torsion adjusting equipment for a rotating shaft module. The automatic torsion adjusting equipment comprises a rack; the movable clamping seat is provided with a rotating base, a radial follow-up seat, a tangential follow-up seat and a movable clamp, and the movable clamp is used for clamping the left rotating arm of the rotating shaft module to be tested; the fixed clamping seat is provided with a fixed clamp used for clamping a right rotating arm of the rotating shaft module to be tested; the torsion adjusting seat is provided with a torsion adjusting arm, and when the torsion adjusting arm moves to the first position, the torsion adjusting arm and the torsion adjusting piece are locked; when the torsion adjusting arm moves to the second position, the torsion adjusting arm and the torsion adjusting piece are not locked; the torsion test sensor assembly is configured to measure a torsion value A when the left rotating arm rotates relative to the right rotating arm when the torsion adjusting arm moves to the second position; and the control system receives and calculates the torsion value A, and when the torsion value A is larger than a set range value or smaller than the set range value, the torsion adjusting arm adjusts the torsion adjusting piece to change the torsion value between the left rotating arm and the right rotating arm.

Description

TECHNICAL FIELD

[0001] The application relates to a torsion automatic adjustment device of a rotating shaft module. BACKGROUND

[0002] The rotating shaft module is also called a rotating hinge, a damping hinge or a damping shaft core, is a connecting element capable of providing a mutual rotating function, is mainly applied between a rotating part and a base, and is currently widely applied in various digital products and electronic devices, such as a notebook computer. The mutual rotating function of the rotating shaft device can be used to realize the opening and closing function between the base and the display screen of the notebook computer, so as to adjust the angle required by the notebook computer relative to the human body.

[0003] At present, the existing rotating shaft product generally comprises a plurality of shaft cores, left and right rotating arms sleeved on the left and right shaft cores, and a damping element arranged between the left and right rotating arms and the shaft cores to generate damping in the rotation of the left and right rotating arms relative to the shaft core. After the rotating shaft product is assembled, a torsion test needs to be performed to ensure that the torsion of the rotating shaft structure is within a preset range. If the torsion exceeds the set range, adjustment needs to be performed. The process in the prior art is completed manually, that is, one end (the left rotating arm) of the rotating shaft is clamped in a torsion sensor, the other end (the right rotating arm) of the rotating shaft is pulled, and the data of the torsion tester is read manually. If the torsion does not meet the set value (exceeds or is insufficient), the fasteners on the rotating shaft product are tightened or loosened manually by using a wrench to adjust the torsion. Such a plurality of cycles are repeated, and finally the torsion of the rotating shaft product is adjusted to be within the set value range. Therefore, the efficiency is low, and the manual pulling is difficult to control the pulling angle, and needs to be adjusted for many times. Generally, 5-8 times of adjustment are needed to realize that the torsion of the final rotating shaft product meets the standard. In the manual operation, the damage rate of the rotating shaft product is also increased. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a torsion automatic adjustment device of a rotating shaft module, which can improve the assembly efficiency and yield of the rotating shaft module.

[0005] To achieve the object, the application provides the following technical scheme.

[0006] A torsion automatic adjustment device of a rotating shaft module, the rotating shaft module at least comprising a rotating shaft piece, a left rotating arm and a right rotating arm rotatably combined with the rotating shaft piece, and a torsion adjusting piece, and being configured to drive the torsion adjusting piece to adjust the rotating torsion value between the left rotating arm and the right rotating arm, comprising:

[0007] A rack;

[0008] A movable clamp base is mounted on a frame and is provided with a rotating base, a radial follower base arranged on the rotating base and capable of sliding in the radial direction of the rotating base, a tangential follower base arranged on the radial follower base and capable of sliding in the tangential direction of the rotating base, and a movable clamp fixed on the tangential follower base and used for clamping a left rotating arm;

[0009] A fixed clamp base is mounted on the frame and is provided with a fixed clamp used for clamping a right rotating arm.

[0010] When the rotating base rotates, the radial follower base, the tangential follower base and the movable clamp rotate synchronously with the rotating base, and further synchronously drive the left rotating arm to rotate relative to the right rotating arm.

[0011] A torque adjusting base is mounted on the frame and is provided with a torque adjusting arm capable of moving in a set direction, and the torque adjusting arm is capable of being locked with a torque adjusting member when the torque adjusting arm moves to a first position, and the torque adjusting arm is not locked with the torque adjusting member when the torque adjusting arm moves to a second position.

[0012] A torque test sensor assembly is mounted on the frame and is configured to measure a torque value A when the movable clamp base drives the left rotating arm to rotate relative to the right rotating arm when the torque adjusting arm moves to the second position.

[0013] A control system receives the torque value A measured by the torque test sensor assembly and performs calculation, and when the torque value A is greater than a set range value or when the torque value A is less than the set range value, the torque adjusting arm moves to the first position and adjusts the torque adjusting member to change the torque value between the left rotating arm and the right rotating arm.

[0014] Further, when the rotating base rotates and drives the left rotating arm to rotate relative to the right rotating arm, the radial follower base is capable of sliding relative to the left rotating arm.

[0015] Further, the torque adjusting member is a nut threadedly locked on the rotating shaft member, the torque adjusting arm is capable of moving along the rotation axis of the nut, and one end of the torque adjusting arm is formed into a limiting structure capable of being sleeved on the outer periphery of the nut to realize synchronous rotation.

[0016] Further, the control system is provided with N-gear torque value intervals, each gear torque value interval corresponds to an adjusting signal, and each adjusting signal corresponds to controlling the torque adjusting arm to adjust the torque adjusting member by a set action.

[0017] Further, the number of torque value intervals greater than the set range value in the N-gear torque value intervals is not less than five and continuous, and / or the number of torque value intervals less than the set range value in the N-gear torque value intervals is not less than five and continuous.

[0018] Further, the torque adjusting arm drives the torque adjusting piece to rotate relative to the rotating shaft piece to change the torque value between the left rotating arm and the right rotating arm.

[0019] The setting action is that the torque adjusting arm drives the rotating angle of the torque adjusting piece relative to the rotating shaft piece.

[0020] Further, the rotating base comprises:

[0021] A rotating disc piece is provided with a scale line;

[0022] A fixed seat is locked on the rotating disc piece by a locking piece;

[0023] The fixed seat can be adjusted and fixed to different positions of the rotating disc piece along the scale line by locking and unlocking of the locking piece.

[0024] Further, it further comprises:

[0025] A guide clamp jaw assembly is installed on the rack and comprises two clamp jaw rods. One end of each of the clamp jaw rods is formed with a guide notch. The two clamp jaw rods can rotate around the other end as the rotating shaft and realize relative opening or closing. The guide notches of the two clamp jaw rods are oppositely arranged and configured to guide and clamp the lower end of the torque adjusting piece of the rotating shaft module when in the closed state, so that the torque adjusting piece is aligned with the torque adjusting arm.

[0026] Further, the guide clamp jaw assembly sliding group is arranged on the first track segment of the rack;

[0027] The torque adjusting seat sliding group is arranged on the second track of the rack;

[0028] The sliding of the guide clamp jaw assembly relative to the rack is independent of the sliding of the torque adjusting seat relative to the rack.

[0029] Further, the rotating axis of the rotating base is coaxial with the axis of the rotating shaft piece.

[0030] Compared with the prior art, the application has the beneficial effects that the assembly efficiency and yield of the rotating shaft module can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a perspective view of a torque automatic adjustment device of a rotating shaft module disclosed by the application, which also shows a state diagram matched with a rotating shaft module.

[0032] Figure 2 is Figure 1 is a perspective view of the movable clamp seat and the fixed clamp seat of the device shown in the above Figure 2The torsion adjusting seat and the guide clamping jaw assembly are not shown.

[0033] Figure 3 is Figure 2 is an enlarged view of the structure in the dashed box.

[0034] Figure 4 is an example of a rotating shaft module that can be used to adjust the torsion of the device of the present application.

[0035] Figure 5 is Figure 1 is a perspective view of the torsion adjusting seat, the fixed clamping seat and the guide clamping jaw assembly of the device shown in FIG. 6 being assembled to the frame, and a state diagram showing that a rotating shaft module is fitted, Figure 5 The complete movable clamping seat is not shown, and only the rotating disc part of the movable clamping seat is shown.

[0036] Figure 6 is Figure 5 is an enlarged view of the structure in the dashed box. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0038] Please refer to Figures 1 to 6 , the torsion automatic adjusting device of the rotating shaft module disclosed in the present application is mainly used for torsion test and automatic adjustment of the rotating shaft module. The rotating shaft module that can be used can be, for example, Figure 4 the type shown in FIG. 1. The rotating shaft module 1 mainly includes a rotating shaft part 11, a left rotating arm 12, a right rotating arm 13 and a torsion adjusting part 14 rotatably combined with the rotating shaft part 11. The relative rotation between the left rotating arm 12 and the right rotating arm 13 forms damping (there is an initial rotating torsion value), and is configured to drive the torsion adjusting part (14) to be able to adjust the rotating torsion value between the left rotating arm (12) and the right rotating arm (13).

[0039] Specifically, the torsion automatic adjustment device of the rotating shaft module comprises a rack (not numbered), a movable clamp seat 2 mounted on the rack, a fixed clamp seat 3, a torsion adjusting seat 4, a guide clamp jaw assembly 5, a torsion test sensor assembly (not shown) and a control system. The movable clamp seat is provided with a rotating base 21, a radial follow-up seat 22 arranged on the rotating base 21 in a radial sliding mode along the rotating direction of the rotating base 21, a tangential follow-up seat 23 arranged on the radial follow-up seat 22 in a tangential sliding mode along the tangent direction of the rotating direction of the rotating base 21, and a movable clamp 24 fixed on the tangential follow-up seat 23. The movable clamp 24 is used for clamping the left rotating arm 12. In this application, preferably, the radial follow-up seat 22 is correspondingly arranged on the rotating base 21 in a sliding mode through a linear guide rail (not numbered), and the tangential follow-up seat 23 is also correspondingly arranged on the radial follow-up seat 22 in a sliding mode through a linear guide rail (not numbered). The movable clamp 24 is a jaw that opens and closes along the sliding direction of the tangential follow-up seat 23.

[0040] Further preferably, the rotating base 21 comprises a rotating disc part 211 and a fixed seat 213 locked on the rotating disc part 211 through a locking member 2130. The radial follow-up seat 22 is arranged on the fixed seat 213 in a sliding mode. The rotating disc part 211 is provided with a scale line 212. Preferably, the fixed seat 213 can be adjusted and fixed to different positions of the rotating disc part 211 along the scale line 212 through locking and unlocking of the locking member 2130. Such design is to make the torsion automatic adjustment device of the rotating shaft module of the application applicable to more types of rotating shaft modules, such as the case that the rotating shafts of the left rotating arm 12 and the right rotating arm 13 are not coaxial, and the case that there are multiple rotating shaft parts 11 in the rotating shaft module 1 (such as two or even more, such as the rotating shaft assembly disclosed in the CN222014679U patent, or such as the rotating mechanism disclosed in the CN117145855B patent). In this application, the locking member 2130 can be a bolt for example.

[0041] Please refer to Figures 1 to 3 It is shown that the fixed clamp seat 3 is mounted on the rack and is provided with a fixed clamp 31 for clamping the right rotating arm 13. When the rotating base 21 rotates, the radial follow-up seat 22, the tangential follow-up seat 23 and the movable clamp 24 rotate synchronously with the rotating base 21, thereby synchronously driving the left rotating arm 12 to rotate relative to the right rotating arm 13. In this process, the radial follow-up seat 22 can slide relative to the left rotating arm 12 to ensure that the movable clamp 24 only provides a tangential rotating force (rotating direction) for driving the left rotating arm 12, and to ensure that no other interference torque affects the rotating torsion between the left rotating arm 12 and the right rotating arm 13.

[0042] Please refer to Figure 1 、 Figure 5 and Figure 6As shown, the torque adjusting seat 4 is mounted on the frame and is equipped with a torque adjusting position that can move in a set direction ( Figure 1 The torque adjusting arm 41, as shown in the diagram, moves in the vertical direction (i.e., the axial direction of the rotating shaft 11). Specifically, the torque adjusting seat 4 is slidably mounted on the frame via a second track section 40, which is a linear track. In a preferred embodiment, the torque adjusting component 14 of the rotating shaft module 1 is a nut that is threadedly locked onto the rotating shaft 11. The torque adjusting arm 41 can move along the rotational axis of the nut (i.e., the axial direction of the rotating shaft 11), and one end of the torque adjusting arm 41 is formed as a limiting structure that can be sleeved on the outer periphery of the nut to achieve synchronous rotation. The limiting structure can be designed as a recessed portion that matches and engages with the shape of the nut.

[0043] In a preferred embodiment, the guide gripper assembly 5 is also mounted on the frame and includes two gripper rods 51. Each gripper rod 51 has a guide groove 511 at one end. The two gripper rods 51 can rotate around their other ends to open or close relative to each other. The guide grooves 511 of the two gripper rods 51 are arranged opposite each other and configured to guide the lower end of the torque adjusting member 14 of the rotating shaft module 1 (the torque adjusting member 14 needs to be exposed) when in the closed state. This ensures that the torque adjusting member 14 is directly opposite the moving axis of the torque adjusting arm 41, allowing the torque adjusting arm 41 to precisely lock the torque adjusting member 14. Specifically, the guide gripper assembly 5 is slidably mounted on a first track segment 50 on the frame. The first track segment 50 is a linear track, and the sliding of the guide gripper assembly 5 relative to the frame is independent of the sliding of the torque adjusting seat 4 relative to the frame.

[0044] The following states exist: when the torque adjusting arm 41 moves to the first position, it can lock with the torque adjusting member 14; when the torque adjusting arm 41 moves to the second position, it is not locked with the torque adjusting member 14. The torque test sensor assembly is mounted on the frame and configured to measure the torque value A when the torque adjusting arm 41 moves to the second position, causing the moving clamp 2 to drive the left rotating arm 12 to rotate relative to the right rotating arm 13. Specifically, when the torque adjusting arm 41 moves to the first position, the moving clamp 2 does not drive the left rotating arm 12 to rotate; the moving clamp 2 drives the left rotating arm 12 to rotate only when the torque adjusting arm 41 moves to the second position, and the torque value A is measured by the torque test sensor assembly during this process.

[0045] The control system (not shown) receives the torque value A measured by the torque test sensor assembly and performs calculation. When the torque value A is greater than a set range value or when the torque value A is less than a set range value, the torque adjusting arm 41 moves to a first position and adjusts the torque adjusting member 14 to change the torque value between the left rotating arm 12 and the right rotating arm 13. Specifically, the torque adjusting arm 41 changes the torque value between the left rotating arm 12 and the right rotating arm 13 by driving the torque adjusting member 14 to rotate relative to the rotating shaft member 11. In a preferred embodiment, the control system is provided with N gear torque value intervals, each of which corresponds to an adjusting signal, and each adjusting signal corresponds to a control of a set action of the torque adjusting arm 41 to the torque adjusting member 14, and the set action is a rotation angle of the torque adjusting arm 41 driving the torque adjusting member 14 relative to the rotating shaft member 11.

[0046] For example, the set range value is in the range of 2 kgf·cm to 4 kgf·cm (including the end value), the N gear torque value intervals include an overlarge interval where the measured torque value A is greater than the set range value and an undersize interval where the measured torque value A is less than the set range value, the overlarge interval is divided into several intervals with an interval of 0.1 kgf·cm, such as B1 interval: greater than 4 kgf·cm and less than or equal to 4.1 kgf·cm; B2 interval: greater than 4.1 kgf·cm and less than or equal to 4.2 kgf·cm; B3 interval: greater than 4.2 kgf·cm and less than or equal to 4.3 kgf·cm, and so on. Each set interval (B1, B2, B3,...) corresponds to an adjusting signal, and the adjusting signal controls the torque adjusting arm 41 to rotate the torque adjusting member 14 by a set angle (for example, B1 interval rotates clockwise by 5 degrees, B2 interval rotates clockwise by 10 degrees, and so on). The undersize interval is divided into several intervals with an interval of 0.1 kgf·cm, such as C1 interval: greater than or equal to 2.1 kgf·cm and less than 2 kgf·cm; C2 interval: greater than or equal to 2.2 kgf·cm and less than 2.1 kgf·cm; C3 interval: greater than or equal to 2.3 kgf·cm and less than 2.2 kgf·cm, and so on. Each set interval (C1, C2, C3,...) corresponds to an adjusting signal, and the adjusting signal controls the torque adjusting arm 41 to rotate the torque adjusting member 14 by a set angle (for example, C1 interval rotates counterclockwise by 5 degrees, C2 interval rotates counterclockwise by 10 degrees, and so on).

[0047] Of course the above is only an example, the relevant setting values can be adjusted according to the actual situation. Preferably, the number of torque value intervals (large interval) greater than the set range value in the N-gear torque value interval is not less than five and continuous, and the number of torque value intervals (small interval) less than the set range value in the N-gear torque value interval is not less than five and continuous. The automatic torque adjustment device of the shaft module in the application can make the torque of the shaft module 1 meet the set range after multiple automatic measurement and adjustment of the shaft module 1 during use.

[0048] In addition, in the embodiment of the application, the linear movement of the torque adjusting arm 41 and the guide clamp jaw assembly 5 can be realized by a linear motor or a cylinder. The rotation of the turntable part 211 and the torque adjusting arm 41 can be realized by a stepping motor or the like. The movement of the radial follow-up seat 22 and the tangential follow-up seat 23 is passive movement without any active driving element. In addition, in the application, the rotation axis of the rotating base 21 is coaxial with the axis of the shaft part 11, so that when the rotating base 21 rotates and drives the left rotating arm 12 to rotate relative to the right rotating arm 13, the generation of interference torque is reduced, and the torque value A measured by the torque test sensor assembly is more accurate.

[0049] In the description of the application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0050] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0051] In the present application, unless specifically defined otherwise, the terms "mount", "connected", "connecting", "fixed", and the like, should be construed broadly and can be either direct or indirect, fixed or removable, and can be either mechanical or in some cases, electrical, unless otherwise indicated by context. Such connections can be communicative, or interactive, unless expressly specified otherwise.

[0052] In the present application, unless specifically defined otherwise, a first feature "on" or "under" a second feature can be directly in contact with the second feature, or can be indirectly in contact with the second feature through an intermediate medium. Also, a first feature "over", "above", or "on top of" a second feature can mean that the first feature is directly above or obliquely above the second feature, or can simply mean that the first feature is horizontally higher than the second feature. A first feature "under", "below", or "underneath" a second feature can mean that the first feature is directly below or obliquely below the second feature, or can simply mean that the first feature is horizontally lower than the second feature.

[0053] It should be noted that when an element is referred to as being "on" or "fixed on" another element, it can be directly on the other element or can have an intervening element present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or can have an intervening element present. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used herein are used for illustrative purposes only and are not intended to be limiting.

[0054] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A torsion automatic adjustment device of a rotating shaft module, the rotating shaft module (1) comprising at least a rotating shaft member (11), a left rotating arm (12), a right rotating arm (13) and a torsion adjustment member (14) rotatably coupled to the rotating shaft member (11), and configured to drive the torsion adjustment member (14) to adjust a rotating torsion value between the left rotating arm (12) and the right rotating arm (13), characterized in that, The application relates to a torsion automatic adjustment device of a rotating shaft module, which comprises the following components: a rack; a movable clamp seat (2) mounted on the rack, which is provided with a rotating base (21), a radial follow-up seat (22) arranged on the rotating base (21) and capable of sliding in the radial direction of the rotating base (21), a tangential follow-up seat (23) arranged on the radial follow-up seat (22) and capable of sliding in the tangential direction of the rotating base (21), and a movable clamp (24) fixed on the tangential follow-up seat (23) and used for clamping a left rotating arm (12); a fixed clamp seat (3) mounted on the rack and provided with a fixed clamp (31) used for clamping a right rotating arm (13); when the rotating base (21) rotates, the radial follow-up seat (22), the tangential follow-up seat (23) and the movable clamp (24) rotate synchronously with the rotating base (21), thereby driving the left rotating arm (12) to rotate relative to the right rotating arm (13); a torsion adjustment seat (4) mounted on the rack and provided with a torsion adjustment arm (41) capable of moving in a set direction, wherein when the torsion adjustment arm (41) moves to a first position, the torsion adjustment arm (41) can be locked with a torsion adjustment piece (14); and when the torsion adjustment arm (41) moves to a second position, the torsion adjustment arm (41) is not locked with the torsion adjustment piece (14); a torsion test sensor assembly mounted on the rack and configured to measure a torsion value A when the left rotating arm (12) is driven by the movable clamp seat (2) to rotate relative to the right rotating arm (13) when the torsion adjustment arm (41) moves to the second position; a control system receiving the torsion value A measured by the torsion test sensor assembly and performing calculation, wherein when the torsion value A is greater than a set range value or when the torsion value A is smaller than the set range value, the torsion adjustment arm (41) moves to the first position and adjusts the torsion adjustment piece (14) to change the torsion value between the left rotating arm (12) and the right rotating arm (13).

2. The automatic torsion adjustment device of the rotating shaft module according to claim 1, characterized in that: When the rotating base (21) rotates and drives the left rotating arm (12) to rotate relative to the right rotating arm (13), the radial follow-up seat (22) can slide relative to the left rotating arm (12).

3. The automatic torsion adjustment device of the rotating shaft module according to claim 1, characterized in that: The torsion adjustment piece (14) is a nut screwed on the rotating shaft piece (11), the torsion adjustment arm (41) can move along the rotating shaft of the nut, and one end of the torsion adjustment arm (41) is formed into a limiting structure capable of being sleeved on the outer periphery of the nut to realize synchronous rotation.

4. The torsion automatic adjustment device of the rotating shaft module according to claim 1, wherein the control system is provided with N-grade torsion value intervals, each grade of the torsion value intervals corresponds to an adjustment signal, and each adjustment signal corresponds to a set action of controlling the torsion adjustment arm (41) to adjust the torsion adjustment piece (14).

5. The torsion automatic adjustment device of the rotating shaft module according to claim 4, wherein the number of the torsion value intervals greater than the set range value in the N-grade torsion value intervals is not less than five and is continuous, and / or the number of the torsion value intervals smaller than the set range value in the N-grade torsion value intervals is not less than five and is continuous. ​ ​ 6. The torsion automatic adjustment device of the rotating shaft module according to claim 4, characterized in that: the torsion adjustment arm (41) drives the torsion adjustment piece (14) to rotate relative to the rotating shaft piece (11) to change the torsion value between the left rotating arm (12) and the right rotating arm (13); the setting action is that the torsion adjustment arm (41) drives the torsion adjustment piece (14) to rotate relative to the rotating shaft piece (11) by a rotation angle.

7. The torsion automatic adjustment device of the rotation shaft module according to any one of claims 1 to 6, characterized in that, the rotating base (21) comprises: a rotating disc piece (211) provided with a scale line (212); a fixed base (213) locked on the rotating disc piece (211) by a locking piece (2130); the fixed base (213) can be adjusted and fixed to different positions of the rotating disc piece (211) along the scale line (212) by locking and unlocking of the locking piece (2130).

8. The torsion automatic adjustment device of the rotation shaft module according to any one of claims 1 to 6, characterized in that, Further comprising: a guide clamp jaw assembly (5) mounted on the rack, comprising two clamp jaw rods (51), each of the clamp jaw rods (51) is formed with a guide notch (511) at one end, the two clamp jaw rods (51) can rotate around the other end as the rotating shaft and realize relative opening or closing, the guide notches (511) of the two clamp jaw rods (51) are oppositely arranged and configured to guide and clamp the lower end of the torsion adjustment piece (14) of the rotating shaft module (1) when in the closed state, so that the torsion adjustment piece (14) is aligned with the torsion adjustment arm (41).

9. The torsion automatic adjustment device of the rotating shaft module according to claim 8, characterized in that: the guide clamp jaw assembly (5) is slidably arranged on the first track segment (50) of the rack; the torsion adjustment seat (4) is slidably arranged on the second track (40) of the rack; the sliding of the guide clamp jaw assembly (5) relative to the rack is independent of the sliding of the torsion adjustment seat (4) relative to the rack.

10. The torsion automatic adjustment device of the rotating shaft module according to any one of claims 1 to 6, characterized in that: the rotating axis of the rotating base (21) is coaxial with the axis of the rotating shaft piece (11).

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