Straightening mechanism, straightening machine and control method of straightening machine

Abstract

The invention provides a straightening mechanism, a straightening machine and a control method of the straightening machine. The straightening mechanism comprises a shell, a straightening rod, a locking piece, a lifting piece and a locking assembly. An accommodating space is formed in the shell; the straightening rod is movably matched with the shell; the locking piece is arranged above the lifting piece; the locking piece and the straightening rod are switched between an unlocking state and a locking state; the lifting piece is used for applying a lifting action or a retraction action to the locking piece; and one end of the locking assembly is connected with the shell, and the other end of the locking assembly locks or unlocks the straightening rod so as to limit or release the reciprocating motion of the straightening rod in the first direction. The technical problems that in the prior art, the moving range of a straightening head is limited by the moving range of a pushing and lifting base, if the position, needing to be straightened, of a straightening material has the height difference larger than the moving range of the straightening head, the straightening head cannot meet the straightening requirement of the material at a time, an operator needs to replace the position of the material many times, and the straightening efficiency is high are solved. The operation becomes complicated, and the user experience is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of straightening machines, and in particular to a straightening mechanism, a straightening machine and a control method thereof. Background Art

[0002] Linear materials usually have high requirements for precision, but since linear materials are easily bent due to temperature or external forces during transportation or processing, they need to be straightened by a straightening mechanism. In the prior art, the straightening head in the straightening machine is fixed to a push-up seat, and the push-up seat is controlled by a servo motor to rise to a certain height, and the straightening head is pushed to a specified height for straightening.

[0003] However, there is at least one of the following problems in the related technology: in the prior art, the movable range of the straightening head is limited by the movable range of the lifting seat. If the position of the straightening material to be straightened has a height difference that is greater than the movable range of the straightening head, the straightening head cannot meet the straightening requirements of the material at one time, and the operator is required to rearrange the position of the material multiple times, which complicates the operation and reduces the user experience. Summary of the invention

[0004] The technical problem solved by the present invention is: in the prior art, the movable range of the straightening head is limited by the movable range of the lifting seat. If the position of the straightening material to be straightened has a height difference that is greater than the movable range of the straightening head, the straightening head cannot meet the straightening demand of the material at one time, and the operator is required to rearrange the position of the material multiple times, which makes the operation complicated and reduces the user experience.

[0005] In order to solve the above problems, a straightening mechanism includes: a shell, a straightening rod, a locking piece, a lifting piece and a locking assembly; a accommodating space is provided in the shell, and the straightening rod is movably cooperated with the shell to reciprocate in a first direction; the locking piece is provided above the lifting piece; and the locking piece and the straightening rod are switched between an unlocked state and a locked state; the lifting piece is used to apply a lifting action or a retracting action to the locking piece; a locking assembly, one end of the locking assembly is connected to the shell, and the other end locks or unlocks the straightening rod to limit or release the reciprocating movement of the straightening rod along the first direction.

[0006] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: this solution cooperates with the rod body of the straightening rod through the locking member. When the locking member and the straightening rod enter the locked state, the locking member is fixed on the straightening rod, and the lifting member pushes the locking member upward while simultaneously pushing the straightening rod upward. When the lifting member is pushed to the maximum height of the lifting member once, the straightening rod still has not reached the specified height. At this time, the straightening rod is fixed at the current height through the locking assembly, the lifting member is contracted, the locking member is unlocked from the straightening rod, and reset downward to push the straightening rod up for the second time, and the process is repeated many times until the straightening rod reaches the specified height. This solution makes the straightening mechanism larger and more flexible in straightening range compared with the prior art, can better meet the needs of straightening objects of different shapes, and makes the operation easier.

[0007] In one embodiment of the present invention, a first thread is provided on the side of the straightening rod; the locking member includes a trapezoidal nut, and a second thread is provided on the side of the trapezoidal nut close to the straightening rod; wherein the first thread and the second thread are engaged with each other, so that the trapezoidal nut can rotate and move on the straightening rod or be locked on the straightening rod.

[0008] Compared with the prior art, the technical effect achieved by adopting this technical scheme is as follows: the first thread and the second thread cooperate with each other, so that when the trapezoidal nut is only subjected to force in the upward direction or the downward direction, the trapezoidal nut will not rotate on the straightening rod, so that the trapezoidal nut is fixed on the rod body of the straightening rod; when the trapezoidal nut is subjected to a rotational torque, the trapezoidal nut is unlocked on the straightening rod, and the trapezoidal nut rotates on the straightening rod; the first thread and the second thread cooperate with each other to realize the conversion of the trapezoidal nut and the straightening rod between a locked state and an unlocked state.

[0009] In one embodiment of the present invention, the helix angle of the trapezoidal nut is defined as n, wherein 0°≤n≤6°.

[0010] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the helix angle has self-locking conditions within this angle range, and the trapezoidal nut can be locked on the straightening part by its own gravity. The trapezoidal nut within this range has high self-locking strength and can rotate relative to the straightening rod under the action of the rotational torque, which helps to improve the accuracy of the straightening mechanism.

[0011] In one example of the present invention, the shell includes a side panel and a base, the side panel is vertically arranged on the upper side of the base, and the side panel and the base are surrounded by a accommodating space, and the straightening rod is movably arranged in the accommodating space; the side panel is provided with a first support plate and a second support plate which are parallel to the base respectively from top to bottom, and a first through hole is opened at the center position of the first support plate; a second through hole is opened at the center position of the second support plate; wherein, the rod body of the straightening rod matches the first through hole and the second through hole structure, and the straightening rod is arranged to pass through the first through hole and the second through hole to ensure that the straightening rod performs linear movement.

[0012] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: by setting the first through hole and the second through hole on the first support plate and the second support plate in the accommodating space to limit the movement path of the straightening rod, it is ensured that the straightening rod can move linearly along its own axial direction.

[0013] In one embodiment of the present invention, the locking assembly includes a ball nut movably disposed on the straightening rod and located above the first support plate.

[0014] Compared with the existing technology, the technical effect achieved by adopting this technical solution is as follows: due to the non-self-locking characteristics of the ball nut, the ball nut will move downward along the straightening part under the influence of its own gravity. When the ball nut is in contact with the first support plate, the ball nut cannot continue to descend, and the threads of the ball nut and the threads of the straightening rod engage with each other to generate a reverse force to support the straightening rod, so as to fix the straightening rod at the current height.

[0015] In one embodiment of the present invention, the straightening mechanism includes a reset component, which is arranged on a side of the side plate close to the accommodating space, and the reset component is cooperatively connected with the locking member to reset the locking member to fit with the lifting member in the retracted state.

[0016] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: by setting a reset component, the lifting member is reset, thereby improving the straightening accuracy of the straightening mechanism.

[0017] In one embodiment of the present invention, the reset assembly includes an elastic coupling and a torque motor, the torque motor is fixed to the side plate, one end of the elastic coupling is connected to the output end of the torque motor; the end of the elastic coupling away from the torque motor is connected to the upper end of the locking member.

[0018] Compared with the prior art, the torque motor transmits the torque to the lifting member through the elastic coupling to reset it, and the structure is simple and easy to implement.

[0019] In one embodiment of the present invention, the lifting member includes a piezoelectric stack, the lower end of the piezoelectric stack is fixed to the base, and the upper end of the piezoelectric stack is cooperatively connected to the locking member.

[0020] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the piezoelectric stack, as a driving motor, has two states, compression and extension. When the piezoelectric stack is powered on and starts working, the piezoelectric stack can be controlled to switch between the compression and extension states. At the same time, the piezoelectric stack can control the telescopic length of the piezoelectric stack as needed, and the controlled telescopic length can be accurate to the sub-nanometer level. When the locking piece is locked on the straightening part, the piezoelectric stack directly applies thrust to the combined structure of the locking piece and the straightening part, so that the straightening mechanism has higher precision.

[0021] In one example of the present invention, a straightening machine is provided, which includes any of the straightening mechanisms described above, and the straightening machine includes an intelligent adjustment system, and the intelligent adjustment system is used to control the straightening mechanism.

[0022] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: a straightening machine including any one of the above-mentioned technical features is provided, and the straightening machine is equipped with an intelligent adjustment system, which can accurately control the straightening mechanism and monitor the working condition of the straightening mechanism, making the straightening machine more intelligent and improving the operating accuracy of the straightening mechanism.

[0023] In one example of the present invention, a control method is provided, which can be applied to the above-mentioned straightening machine, and the intelligent adjustment system includes an Internet of Things system, a host computer and a deflection detection device; the control method includes: controlling the host computer to set preset deflection parameters; controlling the Internet of Things system to obtain current working condition data; controlling the deflection detection device to obtain first deflection data of the target object; controlling the host computer to calculate a theoretical straightening amount according to the working condition data and the deflection data to obtain the straightening length and straightening time required for the target object; controlling the straightening mechanism to perform the straightening action according to the straightening distance and the straightening time; controlling the deflection detection device to obtain second deflection data of the target object; controlling the host computer to determine whether the second deflection data meets the preset deflection parameters; if the judgment is no, controlling the host computer to recalculate the theoretical straightening amount of the target object; if the judgment is yes, controlling the host computer to end the control process and save the running data.

[0024] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: since different straightening objects have different parameters and working conditions, the above-mentioned control method is used to meet the straightening accuracy requirements of different straightening objects under intelligent control.

[0025] After adopting the technical solution of the present invention, the following technical effects can be achieved: (1) The straightening mechanism of the present invention switches between a locked state and an unlocked state through the combined structure of the locking member and the straightening rod, and the locking assembly fixes the straightening rod at the current height, so that the lifting member can push the straightening rod up multiple times until it reaches the designated straightening position, so that the straightening mechanism can flexibly cope with straightening objects of different shapes; (2) The lifting element uses a piezoelectric stack, which can be extended and retracted by itself. The piezoelectric stack has high precision, which can be accurate to the sub-nanometer level, thus improving the accuracy of the straightening mechanism. (3) Intelligent control method enables the straightening mechanism to meet the straightening tasks of most working conditions and different materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A structural schematic diagram of a straightening mechanism provided by the present invention; Figure 2 for Figure 1 Sectional view of the center straightening mechanism; Figure 3 A flow chart of a control method.

[0027] Description of reference numerals: 101. Straightening rod; 102. Piezoelectric stack; 103. Trapezoidal nut; 104. Ball nut; 105. First elastic coupling; 106. Second elastic coupling; 107. Flexible hinge; 108. Torque motor; 201. First support plate; 202. Second support plate; 203. Base; 301. First space; 302. Second space; 303. Third space. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] like Figure 1 and Figure 2 As shown, a straightening mechanism includes: a shell, a straightening rod 101, a locking member, a lifting member and a locking assembly; a housing space is provided in the shell, and the straightening rod 101 movably cooperates with the shell to reciprocate in a first direction; the locking member is provided above the lifting member; and the locking member and the straightening rod 101 are switched between an unlocked state and a locked state; the lifting member is used to apply a lifting action or a retracting action to the locking member; a locking assembly, one end of the locking assembly is connected to the shell, and the other end locks or unlocks the straightening rod 101 to limit or release the straightening rod 101 from reciprocating motion along the first direction.

[0030] Specifically, a reserved space is provided below the base 203 of the shell, and the reserved space is used for the movement and storage of the spare part at the lower end of the straightening rod 101 to ensure the margin and movement space of the straightening rod 101. The upper end of the straightening rod 101 is a straightening activity end, which is used to perform straightening activities on the target object to be straightened. The lifting member is fixed to the upper end of the base 203 and can be extended upward. The upper end of the lifting member acts on the lower end of the locking member. The first direction is the up and down direction. The straightening rod 101 performs linear displacement along the up and down direction to complete the straightening activity.

[0031] Furthermore, when the lifting member changes from a contracted state to an extended state, the lifting member pushes the locking member upward, and at this time the locking member and the straightening rod 101 enter a locked state, the locking member is fixed to the straightening rod 101, and the locking member transmits the thrust of the lifting member to the straightening rod 101, so that the straightening rod 101 and the locking member are pushed upward synchronously; when the lifting member reaches the limit height of the extended state once, but the upper end of the straightening rod 101 has not reached the specified height, the lifting member pushes the straightening rod 101 a second time, and the lifting member changes from an extended state to a contracted state, and the locking member and the straightening rod 101 enter an unlocked state, and the locking member is unlocked on the straightening rod 101 and can be relatively The straightening rod 101 moves, and the locking member connected to the lifting member resets downward and resets to fit with the upper end of the lifting member in the retracted state. At the same time, the locking assembly fixes the straightening rod 101 at the height after the first lifting. After the lifting member completes the contraction and the locking member completes the reset, the lifting member changes from the retracted state to the extended state, and the locking member enters the locked state with the straightening rod 101 again. The locking assembly unlocks the straightening rod 101 to push the straightening rod 101 up for the second time, and so on. The lifting member switches between the cyclic extension state and the retracted state many times until the upper end of the straightening rod 101 reaches the specified height to complete the straightening action.

[0032] Furthermore, during the recovery phase of the straightening rod 101 , the straightening rod 101 drives the trapezoidal nut 103 and the ball nut 104 through the torque motor 108 without self-locking to reset the straightening rod 101 .

[0033] In one embodiment of the present invention, a first thread is provided on the side of the straightening rod 101; the locking member includes a trapezoidal nut 103, and a second thread is provided on the side of the trapezoidal nut 103 close to the straightening rod 101; wherein the first thread and the second thread are engaged with each other, so that the trapezoidal nut 103 can rotate and move on the straightening rod 101 or be locked on the straightening rod 101.

[0034] Specifically, the engagement between the trapezoidal nut 103 and the straightening rod 101 and the friction force generated between the first thread and the second thread along the thread matching direction enable the trapezoidal nut 103 to be locked on the straightening rod 101 without being subjected to rotational torque, thereby limiting the trapezoidal nut 103 from rotating upward or rotating downward movement relative to the straightening rod 101. When the trapezoidal nut 103 is subjected to rotational torque, and when the rotational torque is greater than the friction force generated between the first thread and the second thread along the thread matching direction, the trapezoidal nut 103 is unlocked on the straightening rod 101 and rotates upward or rotates downward relative to the straightening rod 101.

[0035] Preferably, the helix angle of the trapezoidal nut 103 is defined as n; wherein, when 0°≤n≤6°, the helix angle refers to the degree of elevation of any point on the thread line in the pitch direction, describing the slope of the thread line. The calculation formula of the helix angle in this solution is n=arctan(p / πd), wherein n is the helix angle, p is the pitch of the second thread of the trapezoidal nut 103, d is the diameter of the thread of the trapezoidal nut 103, and π is the pi.

[0036] In one example of the present invention, the shell includes a side panel and a base 203, the side panel is vertically arranged on the base 203, and the side panel and the base 203 are surrounded to form a receiving space, and the straightening rod 101 is movably arranged in the receiving space; the side of the side panel close to the installation space is respectively provided with a first support plate 201 and a second support plate 202 parallel to the base 203 from top to bottom, the first support plate 201 is arranged on the side of the side panel close to the receiving space, and the first support plate 201 is provided with a first through hole along the axis of the receiving space; the second support plate 202 is arranged on the side of the side panel close to the receiving space, and the second support plate 202 is located below the first support plate 201, and the second support plate 202 is provided with a second through hole along the axis of the receiving space; wherein, the rod body of the straightening rod 101 matches the first through hole and the second through hole structure, and the straightening rod 101 is arranged through the first through hole and the second through hole to ensure that the straightening rod 101 performs linear movement.

[0037] Specifically, the accommodating space is barrel-shaped, the axis of the accommodating space is the axis perpendicular to the center of the base 203, the straightening rod 101 is arranged along the axis of the accommodating space, and the straightening rod 101 performs linear motion along the axis of the accommodating space to realize straightening of the target object, an opening is provided at the upper end of the accommodating space, and a linear bearing is provided at the intersection of the opening and the axis of the accommodating space, the first support plate 201 is arranged parallel to the base 203, and the second support plate 202 is arranged parallel to the base 203, and the first support plate 201 and the second support plate 202 divide the accommodating space from top to bottom into a first space 301, a second space 302 and a third space 303; the straightening rod 101 passes through the first space 301, the second space 302 and the third space 303, and the upper end of the straightening rod 101 passes through the linear bearing and moves outside the accommodating space.

[0038] Preferably, the lifting member includes a piezoelectric stack 102 , the lower end of the piezoelectric stack 102 is fixed to the base 203 , and the upper end of the piezoelectric stack 102 is cooperatively connected with the trapezoidal nut 103 .

[0039] Preferably, the piezoelectric stack 102 is connected to the trapezoidal nut 103 via a flexible hinge 107. The flexible hinge 107 eliminates the mechanical friction between the piezoelectric stack 102 and the trapezoidal nut 103, thereby improving the accuracy of the straightening mechanism.

[0040] Preferably, the locking assembly includes a ball nut 104, which is movably arranged on the straightening rod 101 and located above the first support plate 201. The ball nut 104 has a non-self-locking property. When the piezoelectric stack 102 changes from a compressed state to an extended state, the ball nut 104 moves upward under the influence of the thrust. When the piezoelectric stack 102 changes from an extended state to a compressed state, the ball nut 104 rotates downward along the straightening rod 101 due to its own gravity. The torque generated by the ball nut 104 in the downward process is transmitted to the trapezoidal nut 103 through the transmission device. Under the action of external force, the upper end of the trapezoidal nut 103 makes the helix angle greater than the friction angle, and the trapezoidal nut 103 is unlocked on the straightening rod 101 and reset to fit the piezoelectric stack 102 in the compressed state.

[0041] In one example of the present invention, the straightening mechanism includes a reset device, which is cooperatively connected to the trapezoidal nut 103; wherein, when the lifting member changes from an extended state to a compressed state, the reset device unlocks the trapezoidal nut 103 on the straightening rod 101, and resets the trapezoidal nut 103 to fit with the output end of the piezoelectric stack 102.

[0042] Specifically, the reset device is disposed in the second space 302 and is fixedly connected to the upper end of the trapezoidal nut 103 through the second through hole.

[0043] In one embodiment of the present invention, the reset assembly includes an elastic coupling and a torque motor 108, the torque motor 108 is fixed to the side plate, one end of the elastic coupling is connected to the output end of the torque motor 108; the end of the elastic coupling away from the torque motor 108 is connected to the upper end of the locking member.

[0044] Specifically, the elastic coupling includes a first elastic coupling 105 and a second elastic coupling 106; the torque motor 108 is fixed to the side plate; one end of the first elastic coupling 105 is connected to the upper output port of the torque motor 108, and the other end is connected to the ball nut 104 through a first through hole; one end of the second elastic coupling 106 is connected to the lower output port of the torque motor 108, and the other end is connected to the trapezoidal nut 103 through a second through hole. The first through hole and the second through hole are used to pass the straightening rod 101, wherein a top plate is provided at the opening position, and a linear bearing is provided at the center position of the top plate. The upper end of the straightening rod 101 passes through the linear bearing and moves at the upper end of the accommodating space to ensure that the straightening rod 101 moves linearly along the axis of the accommodating space, thereby improving the accuracy of the straightening mechanism; the first elastic coupling 105 converts the gravitational potential energy of the ball nut 104 into a rotational torque and transmits it to the torque motor 108, and the torque motor 108 releases the torque through the second elastic coupling 106 and acts on the trapezoidal nut 103, so that the trapezoidal nut 103 is unlocked and reset to fit with the compressed piezoelectric stack 102.

[0045] Furthermore, the piezoelectric stack 102 extends by utilizing the piezoelectric principle to push the trapezoidal nut 103 to rise, and the trapezoidal nut 103 drives the ball nut 104 and the straightening rod 101 to rise together; since the trapezoidal nut 103 has a self-locking property, the trapezoidal nut 103 and the straightening rod 101 are in a locked state during the rising process, and the straightening rod 101 will not spirally descend under the action of gravity; since the ball nut 104 rises synchronously driven by the straightening rod 101, the first elastic coupling 105 is stretched under the action of the ball nut 104, and the ball nut 104 does not With self-locking characteristics, the ball nut 104 is restored to fit with the first support plate 201 under the action of the first elastic coupling 105, and the ball nut 104 cannot continue to move downward. At this time, the ball nut 104 plays a clamping role, fixing the straightening rod 101 at the current height. The rotation torque generated by the ball nut 104 during the descent process is stored in the first elastic coupling 105 and the second elastic coupling 106. When the piezoelectric stack 102 is in the descent process, the second elastic coupling 106 releases the rotation torque, resets the trapezoidal nut 103 downward, and resets it to the flexible hinge 107. Repeat the above steps for multiple times to complete the straightening action.

[0046] Furthermore, the first elastic coupling 105 is provided with pre-stretching to ensure that the ball nut 104 fits with the first support plate 201 when descending.

[0047] In one example of the present invention, a straightening machine is provided, comprising any of the straightening mechanisms described above, the straightening machine comprising an intelligent adjustment system, and the intelligent adjustment system is used to control the straightening mechanism.

[0048] like Figure 3 As shown, in one embodiment of the present invention, a control method is provided, and the control method can be applied to the above-mentioned straightening machine, and the intelligent adjustment system includes an Internet of Things system, a host computer and a deflection detection device; Control methods include: S1 controls the host computer to set the preset deflection parameters; S2 controls the Internet of Things system to obtain the working condition data of the current straightening mechanism; S3 controls the deflection detection device to obtain first deflection data of the target object; S4 controls the host computer to calculate the theoretical straightening amount according to the working condition data and the first deflection data to obtain the straightening length and straightening time required for the target object; S5 controls the straightening mechanism to perform the straightening action according to the straightening length and the straightening time; S6 controls the deflection detection device to obtain second deflection data of the target object; S7 controls the host computer to determine whether the second deflection data meets the preset deflection parameters; If the judgment in step S8 is no, the host computer is controlled to recalculate the theoretical straightening amount of the target object; If the judgment in S9 is yes, the host computer is controlled to end the control process and save the operation data.

[0049] Specifically, the Internet of Things system collects the temperature and humidity of the current environment and the current working condition of the straightening machine and uploads them to the host computer. The deflection detection device detects the size of the deflection of the target object and the deflection position that needs to be straightened and uploads them to the host computer. The host computer calculates the temperature and humidity data, working condition data and the deflection data of the target object through a mathematical model to obtain the best theoretical straightening amount, and compares and analyzes with the preset deflection parameters and historical straightening data to obtain the final straightening position, straightening length and straightening time. The straightening mechanism is controlled to straighten the target object according to the final straightening position, straightening length and straightening time. After the straightening action is completed, the deflection of the target object is secondary detected and compared with the preset deflection parameters; if it meets the preset deflection parameters, the straightening process is terminated and the straightening data is saved for historical records; if it does not meet the preset deflection parameters, the deflection parameters of the target object are recalculated, and the straightening action is performed again until it meets the preset deflection parameters.

[0050] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A straightening mechanism, characterized in that: include: A housing, wherein a receiving space is provided in the housing; A straightening rod (101), the straightening rod (101) being movably matched with the housing to reciprocate in a first direction; A locking member and a lifting member that cooperate with each other, wherein the locking member is arranged above the lifting member; The locking member and the straightening rod (101) are switched between an unlocked state and a locked state; the lifting member is used to apply a lifting action or a retracting action to the locking member; A locking assembly, one end of which is connected to the housing, and the other end of which locks or unlocks the straightening rod (101) to restrict or release the reciprocating movement of the straightening rod (101) along the first direction.

2. The straightening mechanism according to claim 1, characterized in that: A first thread is formed on the side of the straightening rod (101); The locking member comprises a trapezoidal nut (103), and a second thread is formed on a side of the trapezoidal nut (103) close to the straightening rod (101); The first thread and the second thread mesh with each other, so that the trapezoidal nut (103) can rotate on the straightening rod (101) or be locked on the straightening rod (101).

3. The straightening mechanism according to claim 2, characterized in that: The helix angle of the trapezoidal nut (103) is defined as n; Among them, 0°≤n≤6°.

4. The straightening mechanism according to claim 1, characterized in that: The shell comprises a base (203) and a side plate, wherein the side plate is vertically arranged around the periphery of the base (203); A first support plate (201) and a second support plate (202) are provided in sequence from top to bottom on a side of the side plate close to the accommodating space and are parallel to the base (203) respectively; A first through hole is provided at the center of the first support plate (201); A second through hole is provided at the center of the second support plate (202); The straightening rod (101) matches the first through hole and the second through hole structure, and the straightening rod (101) is arranged through the first through hole and the second through hole.

5. The straightening mechanism according to claim 4, characterized in that: The locking assembly comprises a ball nut (104); The ball nut (104) is movably connected to the straightening rod (101), and the ball nut (104) moves above the first support plate (201).

6. The straightening mechanism according to claim 4, characterized in that: The straightening mechanism comprises: A reset component is arranged on a side of the side plate close to the accommodating space, and the reset component is cooperatively connected with the upper side surface of the locking member to enable the locking member to move downward for reset.

7. The straightening mechanism according to claim 6, characterized in that: The reset assembly comprises an elastic coupling and a torque motor (108); The torque motor (108) is fixed to the side plate, and one end of the elastic coupling is connected to the output end of the torque motor (108); One end of the elastic coupling away from the torque motor (108) is connected to the upper end of the locking member.

8. The straightening mechanism according to claim 4, characterized in that: The lifting member comprises a piezoelectric stack (102); The lower end of the piezoelectric stack (102) is fixed to the base (203), and the upper end of the piezoelectric stack (102) is cooperatively connected to the lower side surface of the locking member.

9. A straightening machine, characterized in that: The straightening mechanism according to any one of claims 1 to 8 comprises: An intelligent adjustment system is used to control the straightening mechanism.

10. A control method, characterized in that: The control method is applied to the straightening machine as claimed in claim 9, the intelligent adjustment system includes an Internet of Things system, a host computer and a deflection detection device, and the control method includes: Controlling the host computer to set a preset deflection parameter; Controlling the Internet of Things system to obtain the working condition data of the straightening mechanism; Controlling the deflection detection device to obtain first deflection data of the target object; Controlling the host computer to calculate a theoretical straightening amount according to the working condition data and the first deflection data, so as to obtain a straightening length and a straightening time required for the target object; Controlling the straightening mechanism to perform a straightening action according to the straightening length and the straightening time; Controlling the deflection detection device to obtain second deflection data of the target object; Controlling the host computer to determine whether the second deflection data meets the preset deflection parameter; If the judgment is no, controlling the host computer to recalculate the theoretical straightening amount of the target object; If the judgment is yes, the host computer is controlled to end the control process and save the operation data.

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