Servo-type tension feedback mechanism and servo-type tension cable frame

Abstract

The application discloses a servo type tension feedback mechanism and a servo type tension wire rack, which comprise a rack body, a servo driver, a rotary servo motor, a rotating part, a wire wheel and a tension wheel arranged on the rack body, the wire wheel is pivotally connected to the rack body, the rotary servo motor is provided with an absolute value encoder, the rotary servo motor and the absolute value encoder are electrically connected to the servo driver, the tension wheel is pivotally connected to one end of the rotating part, the wire wheel and the tension wheel are provided for a wire, the other end of the rotating part is connected to an output end of the rotary servo motor, the rotary servo motor outputs a torque to the wire, and the absolute value encoder is arranged on an output shaft of the rotary servo motor to detect a rotating angle of the output shaft of the rotary servo motor. The application can automatically control the tension of the wire, keeps the tension and the wire speed constant, realizes digital and intelligent production, greatly simplifies the structure compared with traditional constant tension wire releasing equipment, effectively improves production efficiency and reduces production cost.

Description

Technical Field

[0001] This invention relates to a cable manufacturing equipment, and more particularly to a servo-type tension feedback mechanism and a servo-type tension cable frame. Background Technology

[0002] In the field of wire and cable manufacturing, wire feeding machines and extruders / wrapping machines are commonly used to produce wires. Specifically, the wire feeding machine feeds the core wire to the extruder / wrapping machine, where insulating plastic tape is wrapped around the core wire, and finally, the cable is wound up. During the wire feeding process, as the core wire is continuously released from the reel, the radius of the core wire on the reel becomes smaller, and the length of core wire released per revolution of the reel decreases. If the speed of the wire feeding motor is not adjusted in time, it will affect the stability of the wire feeding. To ensure a more stable output of the core wire, the wire feeding speed of the reel needs to be adjusted promptly to maintain a constant wire feeding tension. The powered wire feeding machine is used to solve this problem. It is a standard wire feeding machine equipped with a drive motor and a tension device. The drive motor rotates the reel to feed the wire, and the tension device sets the tension and adjusts the feeding speed, thereby achieving constant tension and constant linear speed for releasing the linear material from the reel.

[0003] Existing powered pay-off machines come in various forms, including gravity-operated swing-arm powered pay-off machines, linear guide rail tension powered pay-off machines, and pneumatic tension powered pay-off machines. Tension adjustment and setting in these machines are typically achieved manually by moving the position of the weights on the swing arm (changing the lever arm), increasing or decreasing the number of weights (directly reducing or increasing weight), and adjusting the air pressure of the pneumatic components (changing the tension cylinder pressure). While existing powered pay-off machines can achieve constant tension and constant linear speed pay-off, they suffer from the following drawbacks: tension adjustment relies on manual operation, which is inconvenient and inaccurate; the mechanical transmission structure of the tension device is complex, and inherent mechanical resistance leads to reduced tension accuracy; when multiple powered pay-off machines are in operation, the tension of each machine is inconsistent; wear and tear on the tension device can easily cause electrical component failure; human error in forgetting to adjust the tension can lead to product scrap; and the tension weights are purely mechanical parts, making digital information transmission and automatic control impossible. Summary of the Invention

[0004] The purpose of this invention is to provide a servo-type tension feedback mechanism that can keep tension and linear speed constant. Compared with traditional constant tension wire feeding equipment, the structure is greatly simplified and production efficiency is effectively improved.

[0005] Another objective of this invention is to provide a servo-type tension wire frame that can automatically control the tension of the wire, keeping the tension and wire speed constant, thereby achieving digital and intelligent production. Compared with traditional constant tension wire feeding equipment, the structure is greatly simplified, effectively improving production efficiency and reducing production costs.

[0006] To achieve the above objectives, the servo-type tension feedback mechanism provided by the present invention includes a frame and a servo driver, a rotary servo motor, a rotating component, a wire reel, and a tension wheel mounted on the frame. The wire reel is pivotally connected to the frame. The rotary servo motor has an absolute encoder inside. The rotary servo motor and the absolute encoder are electrically connected to the servo driver. The tension wheel is pivotally connected to one end of the rotating component, and the wire reel and the tension wheel are around which the wire is wound. The other end of the rotating component is connected to the output end of the rotary servo motor. The rotary servo motor outputs torque to the wire. The absolute encoder is mounted on the output shaft of the rotary servo motor to detect the rotation angle of the output shaft. The servo driver can feed back a signal to the control system based on the rotation angle of the absolute encoder, so that the control system controls the linear speed of the wire and maintains a constant wire tension.

[0007] Compared to existing technologies, this invention utilizes a rotary servo motor, a rotating component, and a tension wheel. The tension wheel is pivotally connected to one end of the rotating component, while the other end of the rotating component is connected to the output end of the rotary servo motor. This allows the rotary servo motor to output a certain torque, creating tension in the wire wrapped around the tension wheel. Furthermore, by incorporating an absolute encoder at the output end of the rotary servo motor, the rotation angle of the motor's output shaft is automatically detected. This allows the control system to automatically adjust the wire's linear speed, thereby achieving automatic tension control and maintaining a constant wire tension and movement speed. The entire process only requires setting the output torque of the rotary servo motor via a servo driver and monitoring the speed feedback of the motor's output shaft using the absolute encoder and control system. Compared to traditional constant tension wire feeding equipment, this solution avoids the use of weights, cylinders, and other components that require manual tension setting, greatly simplifying the structure. Moreover, this solution solves the problem that existing structures that adjust tension using gravity weights are susceptible to gravity and can only be installed vertically. It can be installed at any angle, including horizontally, vertically, and tilted. Furthermore, the rotary servo motor and absolute encoder can be digitally adjusted and set parameters, realizing digital and intelligent production, effectively improving production efficiency and reducing production costs.

[0008] Preferably, the servo-type tension feedback mechanism further includes a tension guide wheel and a tension sensor. The tension guide wheel is pivotally connected to the frame and located between the spool and the tension wheel. The wire is wrapped around the tension guide wheel. The tension sensor is electrically connected to the control system and is used to detect the tension of the wire borne by the tension guide wheel.

[0009] Specifically, the servo-type tension feedback mechanism also includes a tension display to show the tension value detected by the tension sensor. This allows operators to monitor the wire tension in real time, ensuring continuous and stable wire production and guaranteeing wire quality.

[0010] Preferably, the rotating component has a first abutment and a second abutment, and the frame has a first limiting part and a second limiting part. The first limiting part abuts against the first abutment to limit the forward swing angle of the rotating component; the second limiting part abuts against the second abutment to limit the reverse swing angle of the rotating component. By setting the first abutment and the first limiting part, and the second abutment and the second limiting part, the rotating component can be prevented from being continuously driven to rotate by the rotary servo motor after the wire breaks. Thus, by detecting the maximum forward and reverse rotation angles at the output end of the rotary servo motor, it can be determined whether the wire has broken during production, realizing automatic wire breakage shutdown and effectively improving the automation and intelligence of the equipment.

[0011] Specifically, the rotating component is a disc, the center of which is connected to the output end of the rotary servo motor, and the tension wheel is eccentrically pivoted on the disc.

[0012] Specifically, the disc has an arc-shaped groove around its center, with the first and second abutments forming at both ends. The frame has limiting posts inserted into the arc-shaped groove, forming the first and second limiting portions on their sides opposite the two ends of the groove. By using the disc, the tension wheel can be driven, and the arc-shaped groove can limit its movement, resulting in a more compact and rational structure.

[0013] A servo-type tension wire frame includes a drive motor, a wire spool, a control system, and a servo-type tension feedback mechanism; the wire spool is connected to the output end of the drive motor and located on the side of the tension wheel away from the wire wheel; the drive motor is electrically connected to the control system; the wire on the wire spool is sequentially wound around the first groove of the wire wheel, the tension wheel, and the second groove of the wire wheel.

[0014] Preferably, the control system includes a signal transmission module, a processing module, and a parameter input module. The parameter input module is used to input the motion parameters of each electrical component. The processing module is electrically connected to the signal transmission module and the parameter input module respectively to convert the parameters of each electrical component into electrical signals. The signal transmission module is electrically connected to the servo driver and the drive motor respectively to receive or output electrical signals. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the intelligent servo tension wire extruder of the present invention.

[0016] Figure 2 This is a schematic diagram of the electrical connections of the various electrical components of the intelligent servo tension wire extruder of the present invention.

[0017] Figure 3 This invention relates to a three-dimensional servo-type tension pay-off frame.

[0018] Figure 4 This is a front view of the servo-type tension pay-off frame of the present invention.

[0019] Figure 5 This is a side view of the servo-type tension pay-off frame of the present invention.

[0020] Figure 6 This is a perspective view of the extruder of the intelligent servo tension wire extruder of the present invention.

[0021] Figure 7 This is a side view of the extruder of the intelligent servo tension wire extruder of the present invention.

[0022] Figure 8 This is an axial sectional view of the extruder of the intelligent servo tension wire extruder of the present invention.

[0023] Figure 9 This is a structural diagram of the servo-type tension pay-off frame of the present invention used in a wire wrapping machine. Detailed Implementation

[0024] To illustrate the technical content, structural features, and effects of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0025] like Figures 1 to 8As shown, the servo-type tension wire frame of the present invention can be used for wire feeding and take-up in wire extruders, and can also be used for wire feeding, tape feeding, and take-up in wrapping machines, stranding machines, and wire cabling machines. Taking a wire extruder as an example, the present invention discloses an intelligent servo tension wire extruder 100, which includes a servo-type tension wire feeding frame 1 and an extruder 2. The servo-type tension wire rack is the servo-type tension wire rack 1 of the present invention. The servo-type tension wire rack 1 includes a servo-type tension feedback mechanism 10, a drive motor 16, a wire reel 17, and a control system 3. The servo-type tension feedback mechanism 10 includes a frame 11 and a servo driver 12, a rotary servo motor 121, a rotating component 13, a wire reel 14, and a tension wheel 15 disposed on the frame 11. The rotary servo motor 121 has an absolute encoder 122 inside. The rotary servo motor 121 and the absolute encoder 122 are electrically connected to the servo driver 12. The tension wheel 15 is pivotally connected to one end of the rotating component 13, and the other end of the rotating component 13 is connected to the output end of the rotary servo motor 121. The absolute encoder 122 is disposed on the tail of the output shaft of the rotary servo motor 121 to detect the rotation angle of the output shaft of the rotary servo motor 121. The spool 14 is pivotally connected to the frame 1; the spool 17 is connected to the output end of the drive motor 16 and is located on the side of the tension wheel 15 away from the spool 14; the output shaft of the drive motor 16 is connected to a rotating shaft 162 via a pulley set 161, the rotating shaft 162 is rotatably mounted on the frame 11, and the rotating shaft 162 is parallel to the central axis of the rotating component 13. After the core wire of the spool 17 is released, it is sequentially wound around the first groove of the spool 14, the tension wheel 15, and the second groove of the spool 14 before being led to the extruder 2. The spool 14, the tension wheel 15, and the spool 17 are not on the same straight line to allow the core wire to be better wound around them. The extruder 2 includes a barrel 21, a screw 22, a temperature control mechanism 23, a drive mechanism 24, and an extrusion head 25. The extrusion head 25 is located at the front end of the barrel 21 and communicates with it. The temperature control mechanism 23 is located on the outside of the barrel 21 along its output direction to heat and melt the rubber compound. The screw 22 is coaxially built into the barrel 21 and connected to the output end of the drive mechanism 24 to drive the rubber compound in the barrel 21 to be conveyed to the extrusion head 25. The center of the extrusion head 25 has a wire hole 251 for the core wire to move through from the inside, so as to wrap the material around the core wire. The control system 3 is electrically connected to the servo driver 12, the drive motor 16, and the extruder 2 to adjust the output speed of the drive motor 16 according to the rotation angle of the output shaft of the rotary servo motor 121 detected by the absolute encoder 122.The output shaft of the rotary servo motor 121 of the present invention drives the absolute encoder 122 to rotate. The absolute encoder 122 detects the angular motion position data of the rotation of the output shaft of the rotary servo motor 121. The servo driver 12 feeds back these data to the control system 3 in a communication manner. The control system 3 then dynamically controls the speed of the drive motor 16 to match the change in the diameter of the core wire winding on the coil 17, thereby achieving constant linear speed production.

[0026] Please see again Figure 2 The control system 3 includes a signal transmission module 31, a processing module 32, and a parameter input module 33. The parameter input module 33 has a touch screen for inputting the operating parameters of each electrical component. The processing module 32 is electrically connected to the signal transmission module 31 and the parameter input module 33 to convert the parameters of each electrical component into electrical signals. The signal transmission module 31 is electrically connected to the servo driver 12, the drive motor 16, and the extruder 2 to receive or output electrical signals.

[0027] Please see again Figure 3 and Figure 4 The servo-type tension feedback mechanism 10 further includes a tension guide wheel 18, a tension sensor 19, and a tension display 20. The tension guide wheel 18 is pivotally connected to the frame 11 and located between the wire reel 14 and the tension wheel 15. The tension sensor 19 is used to detect the tension of the core wire borne by the tension guide wheel 18 and is electrically connected to the signal transmission module 31. The tension display 20 is electrically connected to the tension sensor 19 to display the tension value detected by the tension sensor 19 in real time. This allows operators to monitor the wire tension in real time, visualize the actual tension, ensure continuous and stable wire production, and guarantee the quality of the wire.

[0028] For example Figure 4As shown, the rotating member 13 is provided with a first abutment 131 and a second abutment 132, and the frame 11 is provided with a first limiting part and a second limiting part. The first limiting part can abut against the first abutment 131 to limit the forward swing angle of the rotating member 13; the second limiting part can abut against the second abutment 132 to limit the reverse swing angle of the rotating member 13. By setting the first abutment 131 and the first limiting part, and the second abutment 132 and the second limiting part, the rotating part 13 can be prevented from being continuously driven to rotate by the rotary servo motor 121 after the wire breaks. Thus, the wire breakage during production can be determined by detecting the maximum forward and reverse rotation angles of the output end of the rotary servo motor 121. For example, the angle of rotation of the output shaft of the rotary servo motor 121 relative to its initial position when the first abutment 131 and the first limiting part abut against each other can be set as the maximum forward rotation angle, and the angle of rotation of the output shaft of the rotary servo motor 121 relative to its initial position when the second abutment 132 and the second limiting part abut against each other can be set as the maximum reverse rotation angle. The absolute encoder 122 is then used for detection and comparison. When this maximum rotation angle is reached, the control system 3 can control each moving part to stop, realizing automatic wire breakage shutdown and effectively improving the automation and intelligence of the equipment. Specifically, the rotating component 13 is a disc, the center of which is connected to the output shaft of the rotary servo motor 121. The tension wheel 15 is eccentrically pivoted on the disc; the center point of the tension wheel 15 is a certain distance from the center point of the disc. An arc-shaped groove 133 is formed around the center of the disc, with the first abutment 131 and the second abutment 132 forming at both ends of the arc-shaped groove 133. A limiting post 111 is provided on the frame 11, inserted into the arc-shaped groove 133 and forming the first limiting portion and the second limiting portion on the sides opposite to the two ends of the arc-shaped groove 133. When the disc rotates excessively in the forward direction, the first limiting portion abuts against the first abutment 131; conversely, the second limiting portion abuts against the second abutment 132. By setting up the disc, it can drive the tension wheel 15 and limit its movement via the arc-shaped groove 133, making the structure more compact and reasonable.

[0029] Please see Figure 8The extruder 2 has a feed inlet 211 on the upper front side of the barrel 21, through which the operator can feed the rubber material into the barrel 21. Multiple temperature control mechanisms 23 are arranged axially along the outer side of the barrel 21 to apply different temperatures to the rubber material at different stages, thus controlling the hardness of the rubber material. Each temperature control mechanism 23 includes a heating mechanism 231 and a fan 232. The heating mechanism 231 has a heating cylinder and a heating wire. The heating cylinder is fitted outside the barrel 21, and the heating wire is disposed inside the heating cylinder to heat the barrel 21. The fan 232 is disposed outside the heating cylinder to blow air and cool the heating cylinder and the barrel 21. By setting up the heating mechanism 231 and the fan 232, the temperature of the barrel 21 can be flexibly and effectively controlled, thereby precisely controlling the melting state of the rubber material and improving the quality of the extruded wire. The drive mechanism 24 includes a motor and a pulley assembly. The motor is communicatively connected to the signal transmission module 31 of the control system. The motor drives the screw 22 to rotate via the pulley assembly, so that the screw 22 drives the rubber material to be output forward along the central axis of the barrel 21. The end of the screw 22 near the outlet 212 of the barrel 21 is located inside the barrel 21.

[0030] The intelligent servo tension wire extruder 100 also includes a servo tension take-up frame 4. The servo tension take-up frame 4 is located at the output end of the extruder 2 and electrically connected to the control system 3 to take up the cable output by the extruder 2. By setting the servo tension take-up frame 4, the finished cable can be automatically and quickly taken up, effectively reducing labor intensity, greatly improving production efficiency, and contributing to fully automated and intelligent production. The servo tension take-up frame 4 also adopts the structure of the servo tension wire frame, that is, the structure and working principle of the servo tension take-up frame 4 are basically the same as those of the servo tension wire release frame 1, the difference being that the directions of driving the wire movement are exactly opposite. By designing the servo tension take-up frame 4 to have the same structure as the servo tension wire release frame 1, it can automatically control the take-up tension, keeping the tension and take-up speed constant, further realizing digital and intelligent production, and further simplifying the equipment structure, effectively improving production efficiency and reducing production costs.

[0031] For example Figure 1As shown, the intelligent servo tension wire extruder 100 further includes a cooling device for cooling the cable and / or a cable take-up machine disposed after the extruder. The intelligent servo tension wire extruder 100 of this invention is configured with a cooling device 5 and a take-up machine 6 sequentially between the extruder 2 and the servo tension take-up frame 4. The take-up machine 6 and the cooling device 5 are electrically connected to the control system 3. The take-up machine 6 has a take-up motor and a take-up wheel; the take-up motor drives the take-up wheel to rotate, thus driving the cable forward. The cooling device 5 has a water tank containing cooling water. The cable extruded from the extruder 2 is cooled in the water tank, causing the adhesive on the cable surface to cool and solidify. The cable is then taken out by the take-up machine 6 and subsequently wound up by the servo tension take-up frame 4.

[0032] Based on the above and in conjunction with the accompanying drawings, the working principle of the intelligent servo tension wire extruder 100 of the present invention will be described in detail below:

[0033] First, let's explain the working principle of the servo-type tension pay-off frame 1 of this invention: A circular rotating component 13 is mounted on the output shaft of the rotary servo motor 121. A pivot shaft is set at a certain distance from the center of the rotating component 13. This pivot shaft is the point of force application, and the distance from the point of force application to the center of the rotating component 13 is the lever arm S (the lever arm S is calculated and determined by the designer according to the tension magnitude). The tension wheel 15 is mounted on the pivot shaft at the point of force application. When the output shaft of the rotary servo motor 121 rotates with a constant torque M and a constant speed, the rotational torque M of the rotary servo motor 121 is transmitted to the core wire through the lever arm S and the tension wheel 15. When the core wire pulls the tension wheel 15, the rotating component 13, and the rotary servo motor 121 to rotate in the opposite direction, according to the principle of action and reaction, tension F is generated on the core wire. According to the torque formula: M = FS, then the tension F = M / S. Since the lever arm S remains fixed, the tension F is directly proportional to the rotational torque M. When the torque M increases, the tension F increases, and vice versa. Therefore, the servo-type tension pay-off frame 1 communicates with the control system 3 through the servo driver 12. The current parameters of the servo driver 12 can be digitally adjusted through the parameter input module 33 of the control system 3, thereby adjusting the torque of the rotary servo motor 121. This allows for digital tension setting and adjustment of the core wire, which is intelligent and fast, replacing the original manual mechanical tension setting and adjustment. Similarly, the working principle and function of the servo tension take-up frame 4 of this invention are the same as those of the servo-type tension pay-off frame 1, and will not be repeated here.

[0034] During cable production, the core wire is first drawn from the reel 17 of the servo-type tension pay-off frame 1 and passes through the extruder 2, cooling device 5, take-up machine 6, and servo tension take-up frame 4. Then, the adhesive material is fed into the barrel 21 from the feed inlet 211, and the temperature control mechanism 23 is activated to heat the adhesive material. At this time, according to the model of the cable to be produced, the corresponding cable parameters or parameter package (including pay-off tension, pay-off speed, adhesive temperature, take-up tension, and take-up speed control parameters) are selected in the control system 3 and input into the parameter input module 33. Afterwards, the processing module 32 processes these parameters and converts them into corresponding electrical or current signals, which are then sent to the servo driver 12, drive motor 16, temperature control mechanism 23, drive mechanism 24, second servo driver 41, and take-up motor via the signal transmission module 31. At this point, each actuator is activated according to the signal. The core wire is output from the reel 17, passes through the first groove of the reel 14, the tension guide wheel 18, the tension wheel 15, and the second groove of the reel 14, and is then conveyed into the wire hole 251 of the extruder head 25 of the extruder 2. Simultaneously, the screw 22 rotates, driving molten rubber material to be conveyed to the extruder head 25. When the core wire and rubber material are simultaneously extruded from the outlet of the extruder head 25, the rubber material wraps around the core wire to form a cable. Afterward, the cable is cooled by the cooling device 5 and then passes through the take-up machine 6 into the servo tension take-up frame 4; the servo tension take-up frame 4 winds up the cable.

[0035] As the core wire is continuously released, the diameter of the core wire around the reel 17 decreases. With the output speed of the first drive motor 16 remaining constant, the length of core wire released per unit time decreases (or the length of core wire released per revolution of the reel 17 decreases). Therefore, the tension of the core wire increases. This tension is applied to the tension wheel 15, causing it to rotate the rotating component 13 forward by a certain angle. At this time, the output shaft of the rotary servo motor 121 also rotates by a certain angle. The absolute encoder 122 detects the rotational position of the output shaft and sends a signal to the servo driver 12. The servo driver 12 feeds the signal back to the control system 3, which then controls the first drive motor 16 to increase its output speed. This allows the reel 17 to accelerate the wire release speed, ensuring that the release speed tends to match the initial speed until the rotary servo motor 121 drives the rotating component 13 back to its initial position. This ensures that the tension of the core wire and the release speed remain constant.

[0036] In addition, the absolute encoder 122 inside the rotary servo motor 121 can be used for wire breakage detection. The detection principle is as follows: When the wire breaks, the tension wheel 15, the rotating component 13, and the rotary servo motor 121 lose the reverse pull (i.e., tension) of the core wire. At this time, the tension on the core wire is 0. The rotary servo motor 121 still drives the rotating component 13 to continue rotating at a constant speed. At this time, the absolute encoder 122 built into the rotary servo motor 121 detects the position of the output shaft rotation in real time. When the rotation position reaches the preset limit position, the absolute encoder 122 sends a signal to the servo driver 12. The servo driver 12 feeds the signal back to the control system 3. The control system 3 can then control the rotary servo motor 121 to stop running immediately, realizing wire breakage detection and automatic shutdown.

[0037] Compared with existing technologies, this invention, by setting up a servo driver 12, a rotary servo motor 121, a rotating component 13, and a tension wheel 15, with the tension wheel 15 pivotally connected to one end of the rotating component 13, and the other end of the rotating component 13 connected to the output end of the rotary servo motor 121, allows the rotary servo motor 121 to output a certain torque, thereby generating a certain tension in the core wire surrounding the tension wheel 15. Furthermore, by setting an absolute encoder 122 on the output end of the rotary servo motor 121, the absolute encoder 122 automatically detects the rotation angle of the output shaft of the rotary servo motor 121. This allows the servo driver 12 and the control system 3 to automatically adjust the output speed of the drive motor 16, thus achieving automatic control of the wire tension and maintaining a constant wire tension and speed. The entire process only requires the servo driver 12 to control the output tension of the rotary servo motor 121 and the absolute encoder 122 combined with the control system 3 to monitor the speed feedback of the output shaft of the drive motor 16. Compared to traditional constant tension wire feeding equipment, this solution avoids the use of weights, cylinders, and other components that require manual tension setting, greatly simplifying the structure. Furthermore, this solution solves the problem that existing structures that adjust tension using gravity weights are susceptible to gravity and can only be installed vertically; it can be installed at any angle, including horizontal, vertical, and inclined, unaffected by gravity. Moreover, the rotary servo motor 121 and absolute encoder 122 can be digitally adjusted and set. Therefore, through the parameter input module 33 of the control system 3, various pre-designed production data of the cable to be produced are input into the parameter input module 33. Then, the processing module 32 converts the data into current signals, which are then transmitted to the servo-type tension wire feeding frame 1, the extruder 2, and the servo tension take-up frame 4 via the signal transmission module 31. This allows for rapid and automatic setting of cable parameters, achieving digital and intelligent production, completely replacing manual operation, eliminating human error, effectively improving production efficiency, and reducing production costs.

[0038] The structures of the drawing machine 5 and the cooling device 6 involved in the intelligent servo tension wire extruder 100 of the present invention are well known to those skilled in the art, and will not be described in detail here.

[0039] like Figure 9As shown, the servo-type tension wire frame 1 of the present invention can also be used in a wire wrapping machine 200. Taking the wire wrapping machine 200 as an example, the wire wrapping machine 200 includes a servo-type tension wire frame 1, a wrapping machine 7, a take-up machine 6, and a servo-type tension wire frame 4 arranged sequentially. The servo-type tension wire frame 1 releases the core wire onto the wrapping machine 7, and the wrapping machine 7 releases the wrapping tape, so that the wrapping tape wraps around the core wire to form a wire. Therefore, such a wire wrapping machine 200 can also automatically control the tension of the wire, keeping the tension and linear speed constant, realizing digital and intelligent production, effectively improving production efficiency and reducing production costs. In addition, the servo-type tension wire frame 4 is suitable not only for wires but also for tape materials.

[0040] The above-disclosed examples are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention shall still fall within the scope of the present invention.

Claims

1. A servo tension feedback mechanism characterized by: The servo type tension feedback mechanism comprises a frame body and a servo driver, a rotary servo motor, a rotating member, a wire reel and a tension wheel arranged on the frame body, the wire reel is pivotally connected to the frame body, the rotary servo motor is provided with an absolute value encoder, the rotary servo motor and the absolute value encoder are electrically connected to the servo driver, the tension wheel is pivotally connected to one end of the rotating member, the wire reel and the tension wheel are provided for a wire, the other end of the rotating member is connected to the output end of the rotary servo motor, the rotary servo motor outputs torque to the wire, the absolute value encoder is arranged on the output shaft of the rotary servo motor to detect the rotation angle of the output shaft of the rotary servo motor, the servo driver can feed back signals to a control system according to the rotation angle of the absolute value encoder, so that the control system controls the linear velocity of the wire and keeps the tension of the wire constant, the rotating member is a disc, the center of the disc is connected to the output end of the rotary servo motor, the tension wheel is eccentrically pivotally connected to the disc, a circular arc slot is formed around the center of the disc, two ends of the circular arc slot form a first abutting portion and a second abutting portion, a limiting column is arranged on the frame body, the limiting column is inserted into the circular arc slot and forms a first limiting portion and a second limiting portion relative to the side surfaces of the two ends of the circular arc slot, the absolute value encoder is used to detect the maximum rotation angle of the output end of the rotary servo motor in the forward and reverse directions, and then the wire breakage is judged and the machine is stopped.

2. The servo tension feedback mechanism of claim 1, wherein: The servo type tension feedback mechanism further comprises a tension guide wheel and a tension sensor, the tension guide wheel is pivotally connected to the frame body and located between the wire reel and the tension wheel, the wire is wound around the tension guide wheel, the tension sensor is electrically connected to the control system and used for detecting the tension of the wire on the tension guide wheel.

3. The servo tension feedback mechanism of claim 2, wherein: The servo type tension feedback mechanism further comprises a tension display table for displaying the tension value detected by the tension sensor.

4. The servo tension feedback mechanism of claim 1, wherein: The first limiting portion can abut against the first abutting portion to limit the forward swing angle of the rotating member, and the second limiting portion can abut against the second abutting portion to limit the reverse swing angle of the rotating member.

5. A servo-tension thread holder characterized by: The servo type tension feedback mechanism comprises a driving motor, a wire reel, a control system and the servo type tension feedback mechanism according to any one of claims 1 to 4, the wire reel is connected to the output end of the driving motor and located on the side of the tension wheel away from the wire reel, the driving motor is electrically connected to the control system, and the wire is wound around the wire reel, a first wire slot of the wire reel, the tension wheel and a second wire slot of the wire reel.

6. The servo-tension thread holder according to claim 5, wherein: The control system comprises a signal transmission module, a processing module and a parameter input module, the parameter input module is used for inputting the motion parameters of each electrical element, the processing module is electrically connected to the signal transmission module and the parameter input module to convert the parameters of each electrical element into electrical signals, and the signal transmission module is electrically connected to the servo driver and the driving motor to receive or output electrical signals.

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