Traction structure for continuous machining of flexible shaft

Abstract

The invention discloses a traction structure for flexible shaft continuous machining, and relates to the technical field of flexible shaft traction conveying, the traction structure comprises a machining platform, a traction speed regulating mechanism is arranged above the machining platform, the traction speed regulating mechanism comprises a lower round roller set and an upper round roller set, the lower round roller set is integrally kept stable, and the upper round roller set can integrally move up and down; in the initial state, the flexible shaft body firstly makes contact with the lower round roller set and is conveyed from the position above the lower round roller set, the winding length of the flexible shaft body is changed through lifting of the upper round roller set on the basis of the lower round roller set, the electric push rod is matched to drive the upper round roller set to ascend and descend, self-adaptive adjustment of the winding length is achieved, and the inherent contradiction that in the prior art, the speed is fixed and cannot be coordinated is solved; when the unhairing area conveys at a high speed and the detection area only needs to run at a low speed, the speed regulation bin can store redundant flexible shafts by increasing the winding length, conflicts caused by speed difference are eliminated through material storage type regulation, and the cutting efficiency of the unhairing procedure is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of flexible shaft traction and conveying technology, specifically to a traction structure for continuous processing of flexible shafts. Background Technology

[0002] Existing traction structures for continuous machining of flexible shafts transmit power through drive components, enabling the flexible shaft to maintain a stable movement on the machining line for continuous operation. The core of the structure consists of a traction module, a tensioning module, and other components. It can achieve efficient traction in continuous machining scenarios such as deburring and inspection, meeting the continuity requirements of batch processing.

[0003] However, existing technologies still have the following drawbacks in practical applications: 1. The deburring and inspection processes of flexible shafts are separate, with each process relying on independent equipment systems and not forming an integrated continuous conveying production line. In this separate mode, the deburred flexible shaft needs to be removed from the original conveying path and repositioned and loaded manually or by a special transfer device before it can enter the inspection stage. During this process, the flexible shaft needs to undergo temporary storage, displacement, and re-clamping operations, which not only breaks the continuity of the processing flow but also easily causes positioning deviations due to the difference in reference between the two conveying systems, resulting in obvious physical intervals and process breaks in the process connection.

[0004] The drawbacks of this processing method are quite significant. First, the secondary loading and transfer process requires manual intervention. Each batch of flexible shafts must undergo disassembly, handling, and positioning operations, which not only increases labor costs but also leads to slight deviations in the loading position of each flexible shaft due to the uncertainty of manual operation, directly affecting the consistency of subsequent inspection benchmarks. Second, during the transfer process, the flexible shafts are prone to friction and collision with tooling fixtures, the ground, etc., which may cause new scratches or deformations on the surface, rendering the previous deburring process ineffective. More importantly, the discrete production mode cannot achieve cycle-based operation. The equipment is idle during the transfer period, reducing equipment utilization. Furthermore, the waiting time between processes will lead to an extended production cycle, making it difficult to meet the market demand for large-volume, fast delivery.

[0005] 2. The conveying speeds of the deburring and inspection processes are difficult to match. The deburring process requires rapid removal of burrs, and its speed setting must match the cutting efficiency of the abrasive. On the other hand, the inspection process requires low-speed and stable conveying of the flexible shaft to ensure the accuracy of image recognition or dimensional measurement, so as to avoid the impact of motion blur on the accuracy of the inspection data. Due to the lack of a collaboratively designed speed control system, the transmission parameters of the two sets of equipment are set independently, and no dynamically adapted traction and adjustment device is provided, which makes the speed difference an inherent contradiction that cannot be dynamically corrected according to the processing status.

[0006] This speed mismatch is a major obstacle preventing continuous process transitions. The high-speed output of the flexible shaft and the low-speed receiving detection end create a speed difference, which can easily lead to the accumulation and curling of the flexible shaft or excessive stretching within a short period of time. Due to the lack of a dedicated traction mechanism, the flexible shaft loses stable constraint in the transition section. Accumulation can cause secondary damage due to friction between the surface and the equipment, while stretching can cause the shaft to be stretched and deformed, directly affecting dimensional accuracy. More seriously, continuous speed conflict may cause the flexible shaft to get stuck at the equipment connection point, leading to motor overload, wear of transmission components, and other malfunctions. This not only increases maintenance costs but also disrupts the processing rhythm.

[0007] Therefore, in view of this, the present invention proposes a traction structure for continuous machining of flexible shafts to make up for and improve the deficiencies of the prior art. Summary of the Invention

[0008] To address the aforementioned technical problems, this invention provides a traction structure for continuous machining of flexible shafts, thereby resolving the technical issues raised in the background section.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a traction structure for continuous processing of a flexible shaft, used for continuous processing of the flexible shaft body, including a processing platform, and a traction speed adjustment mechanism is provided above the processing platform. The traction speed adjustment mechanism includes a lower roller group and an upper roller group. The lower roller group remains stable as a whole, while the upper roller group can move up and down as a whole. In the initial state, the flexible shaft body first contacts the lower roller group and is conveyed from above it. Taking the lower roller group as a reference, the winding length of the flexible shaft body is changed by raising and lowering the upper roller group. For example, when rising, the winding path of the flexible shaft body between the lower roller group and the upper roller group is extended, the material storage capacity is increased, and the adjustment range is maximized. The traction speed adjustment mechanism also includes no fewer than two fixed collars, which are symmetrically distributed on both sides of the lower roller group and the upper roller group, thereby stabilizing the traction of the flexible shaft body at different positions and speeds.

[0010] Furthermore, a deburring component and a detection component are installed above the processing platform. The deburring component is located on the front side of the flexible shaft body in the conveying direction, while the detection component is located on the rear side of the flexible shaft body in the conveying direction. The deburring component and the detection component are on the same axis. The flexible shaft body is divided into an inner layer and an outer layer. The inner layer steel wire is spirally wound on the inner surface of the flexible shaft center column, and the outer layer steel wire is spirally wound on the outer surface of the flexible shaft center column in the opposite direction to the inner layer steel wire.

[0011] Furthermore, the traction speed regulation mechanism also includes a drive motor mounted above the processing platform. The drive motor is a dual-axis servo motor, and the outer wall of the output shaft of the drive motor is fixedly connected with an active rotating wheel.

[0012] Furthermore, a narrow-pitch belt is driven to the outer wall of the active roller near the side of the hair removal component. The end of the narrow-pitch belt away from the active roller is driven to a first driven roller, and the radius of the active roller and the first driven roller are equal.

[0013] Furthermore, a wide-pitch belt is driven to the outer wall of the active rotating wheel near the detection component. The end of the wide-pitch belt away from the active rotating wheel is driven to a second driven rotating wheel, and the radius ratio of the active rotating wheel to the second driven rotating wheel is 1:2.

[0014] Furthermore, the fixing collars are respectively fixedly connected to the inner walls of the first driven wheel and the second driven wheel. The fixing collars are all located on the movement path of the flexible shaft body. The inner walls of the fixing collars are all fixedly connected to threaded tracks. The outer walls of the threaded tracks are all fitted with rubber strips, and the spiral direction of the threaded tracks is consistent with the conveying direction of the flexible shaft body.

[0015] Furthermore, a speed control chamber is installed on the upper surface of the processing platform. The speed control chamber is divided into upper and lower parts, and electric push rods are evenly installed at the middle position of the upper and lower parts of the speed control chamber. The upper and lower parts of the speed control chamber are slidably connected by the electric push rods.

[0016] Furthermore, the lower roller assembly is rotatably connected to the inner wall of the lower part of the speed regulating chamber, and the upper roller assembly is rotatably connected to the inner wall of the upper part of the speed regulating chamber. Both the lower roller assembly and the upper roller assembly are composed of no less than three circular shafts, and the upper and lower circular shafts are arranged in parallel and staggered distribution.

[0017] Furthermore, the outer walls of the circular shafts in both the lower and upper circular roller groups are fixedly connected with limiting collars. The flexible shaft body moves in an S-shape between the lower and upper circular roller groups via the limiting collars, and there are no fewer than four contact points between the flexible shaft body and the upper and lower circular shaft surfaces to ensure uniform tension transmission. The winding angle formed by the flexible shaft body through the limiting collars is set to sixty degrees.

[0018] Furthermore, a tension sensor is installed on the side wall of the speed regulating chamber. The drive of the upper part of the speed regulating chamber should be linked with the tension sensor and be activated only when the tension exceeds the set range. When the tension sensor detects tension fluctuations, the electric push rod will rise or fall according to the fluctuations, thereby synchronously driving the upper roller group to move.

[0019] Compared with the prior art, the beneficial effects of the present invention are: (1) This device integrates the deburring component, traction speed regulation mechanism and detection component on the same processing platform to form a continuous integrated production line, which completely solves the problem of process breakage caused by process separation in the prior art. The flexible shaft body does not need to leave the original conveying path from deburring to speed regulation and then to detection. It eliminates the steps of manual transfer, secondary positioning and feeding. It not only eliminates the physical interval caused by transfer, but also avoids the positioning deviation caused by multiple clamping, ensuring that the benchmark of each process is consistent. This continuous design greatly reduces the time loss, so that the equipment always maintains a high-efficiency operating state during the processing, effectively improving the equipment utilization rate. It is especially suitable for mass production needs, can greatly shorten the production cycle, and meet the market requirements of fast delivery.

[0020] Most importantly, the entire device's structural design largely utilizes standard components such as drive motors, transmission components (belts, pulleys), and tension sensors. Firstly, standard components possess mature manufacturing processes and stable quality systems, ensuring the reliable performance of each core component, reducing assembly errors caused by insufficient precision in customized parts, and improving overall operational stability. Secondly, the wide availability and mature supply chain of standard components significantly shortens the production cycle, reduces procurement costs and inventory pressure, and facilitates later maintenance and replacement. When a component malfunctions, a suitable replacement can be quickly found, reducing downtime and improving equipment utilization. Furthermore, the technical parameters of standard components are transparent and readily available, allowing for modular configuration adjustments based on actual needs. For example, different power drive motors or sensor sensitivity can be adjusted according to the specifications of the flexible shaft machining, enhancing the device's versatility and expandability, better adapting to diverse production requirements, while simultaneously reducing design and manufacturing costs and accelerating the industrialization of the device.

[0021] (2) In response to the speed difference between the deburring area and the detection area, this device adopts a dynamic adjustment mechanism with tension linkage. The tension sensor monitors the tension change of the flexible shaft body in real time, and the electric push rod drives the upper roller group to lift and lower, so as to realize the adaptive adjustment of the winding length. This perfectly solves the inherent contradiction of fixed speed and inability to coordinate in the existing technology. When the deburring area is conveyed at high speed, while the detection area only needs to run at low speed, the speed regulating chamber can store the excess flexible shaft by increasing the winding length. The material storage adjustment eliminates the conflict caused by the speed difference, which not only ensures the cutting efficiency of the deburring process, but also meets the requirements of the detection process for low-speed stability. This adjustment method does not require manual intervention and can be dynamically corrected according to the processing status, avoiding the problems of flexible shaft accumulation and curling or excessive pulling. It effectively prevents the shaft body from being stretched and deformed and secondary damage to the surface. At the same time, it reduces equipment jamming, motor overload and other faults caused by speed conflict, reduces maintenance costs, and ensures continuous and stable processing.

[0022] During actual conveying, the flexible shaft body is conveyed in the speed regulating chamber in an S-shaped path. It can disperse tension through surface contact with multiple sets of upper and lower rollers, avoiding deformation or wear caused by localized stress concentration. This path design increases the contact length between the flexible shaft and the rollers, making the tension evenly distributed throughout the winding section. Even during speed adjustment, instantaneous stress can be offset by multiple sets of support points. At the same time, the S-shaped path provides a basis for material storage speed regulation. When the upper roller group is raised and lowered, the length changes of each path segment can be superimposed to form a significant adjustment of the total winding length, efficiently accommodating the redundant flexible shaft caused by speed difference, ensuring a smooth transition between input and output speeds, and avoiding the problem of insufficient adjustment range due to the path being too short.

[0023] Secondly, by using a limiting collar to wrap and transport the flexible shaft at a 60-degree angle, a stable surface contact between the flexible shaft and the rollers can be forced, preventing slippage or detachment during transport. The 60-degree angle design ensures a large contact area while avoiding excessive frictional resistance due to an excessively large angle or insufficient contact due to an excessively small angle, thus balancing traction force and wear risk. The limiting collar further constrains the lateral offset of the flexible shaft, ensuring the consistency of the winding path and keeping the winding angle of the flexible shaft between the upper and lower rollers stable. This provides a precise benchmark for length calculation during speed adjustment, while also ensuring uniform tension transmission and improving the stability and reliability of the entire transport process.

[0024] (3) By using precise speed matching and spiral traction design for the fixed collars in different areas, stable constraints on flexible shafts at different speeds are achieved, solving the problem of unstable conveying caused by the lack of effective traction in the transition section in the existing technology. The fixed collar in the deburring area rotates at high speed with the first driven wheel. Its inner wall right-hand threaded track cooperates with the rubber strip to provide sufficient traction force for the high-speed conveying of the flexible shaft. At the same time, the spiral guide ensures axial concentricity. The fixed collar in the detection area rotates at low speed with the second driven wheel. The speed is reduced to half that of the deburring area to meet the low-speed conveying requirements. Stable traction is also achieved through the axial component of the threaded track. This synchronous traction design not only ensures the smooth conveying of the flexible shaft in different speed ranges, but also compensates for the slight jump and diameter error of the flexible shaft through the elastic fit of the rubber strip, avoiding slippage. At the same time, the meshing of the threaded track and the outer steel wire of the flexible shaft enhances the traction stability, ensuring that the flexible shaft is always conveyed along the axial direction, providing a reliable guarantee for the precise processing of each process. Attached Figure Description

[0025] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention; Figure 2 This is a side-view perspective view of the three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the planar top view of the present invention; Figure 4This is a schematic diagram of the internal three-dimensional structure of the speed control chamber of the present invention; Figure 5 This is a schematic diagram of the planar structure of the flexible shaft body in the adjustment state of the present invention; Figure 6 This is a schematic diagram of the adjustment process direction of the flexible shaft body of the present invention; Figure 7 This is a three-dimensional structural diagram of the narrow-pitch belt and other components of the present invention; Figure 8 This is a three-dimensional structural diagram of the wide-pitch belt and other components of the present invention; Figure 9 This is a three-dimensional structural diagram illustrating the positional relationship between the narrow-pitch belt and the wide-pitch belt of the present invention; Figure 10 This is a schematic diagram of the internal three-dimensional structure of the fixing collar of the present invention; Figure 11 This is a schematic diagram showing the positional relationship between the threaded track and the main body of the flexible shaft in this invention.

[0026] The following components are labeled in the diagram: 1. Processing platform; 11. Dehairing assembly; 12. Detection assembly; 13. Flexible shaft body; 2. Traction speed regulation mechanism; 21. Drive motor; 22. Driving pulley; 23. Narrow-pitch belt; 24. First driven pulley; 25. Wide-pitch belt; 26. Second driven pulley; 27. Fixed collar; 28. Threaded track; 29. ​​Speed ​​regulating chamber; 210. Electric actuator; 211. Lower roller assembly; 212. Upper roller assembly; 213. Limiting collar; 214. Tension sensor. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention. It should be noted that the structure and working principle of the above-mentioned processing platform 1, dehairing component 11, detection component 12, flexible shaft body 13 and other components are existing technologies and will not be described in detail here.

[0028] Example 1: Please refer to Figure 1 - Figure 11As shown, a traction structure for continuous processing of a flexible shaft is used to continuously process the flexible shaft body 13. It includes a processing platform 1, and a traction speed regulating mechanism 2 is arranged above the processing platform 1. The traction speed regulating mechanism 2 includes a lower roller group 211 and an upper roller group 212. The lower roller group 211 remains stable as a whole, while the upper roller group 212 can move up and down as a whole. In the initial state, the flexible shaft body 13 first contacts the lower roller group 211 and is conveyed from above it. Taking the lower roller group 211 as a reference, the winding length of the flexible shaft body 13 is changed by the lifting and lowering of the upper roller group 212. For example, when it rises, the winding path of the flexible shaft body 13 between the lower roller group 211 and the upper roller group 212 is extended, the material storage capacity is increased, and the adjustment range is maximized. The traction speed regulating mechanism 2 also includes no fewer than two fixed collars 27, which are symmetrically distributed on both sides of the lower roller group 211 and the upper roller group 212, thereby stabilizing the traction of the flexible shaft body 13 at different positions and speeds.

[0029] It should be noted that a deburring component 11 and a detection component 12 are installed above the processing platform 1. The deburring component 11 is located on the front side of the flexible shaft body 13 in the conveying direction, while the detection component 12 is located on the rear side of the flexible shaft body 13 in the conveying direction. The deburring component 11 and the detection component 12 are on the same axis. The flexible shaft body 13 is divided into an inner layer and an outer layer. The inner layer steel wire is spirally wound on the inner surface of the flexible shaft center column, and the outer layer steel wire is spirally wound on the outer surface of the flexible shaft center column in the opposite direction to the inner layer steel wire.

[0030] Please refer to Figure 1 - Figure 11 As shown, the traction speed control mechanism 2 also includes a drive motor 21 mounted above the processing platform 1. The drive motor 21 is a dual-axis servo motor. A drive wheel 22 is fixedly connected to the outer wall of the output shaft of the drive motor 21. A narrow-pitch belt 23 is driven to the outer wall of the drive wheel 22 closest to the dehairing assembly 11. A first driven wheel 24 is driven to the end of the narrow-pitch belt 23 furthest from the drive wheel 22. The radius of the drive wheel 22 and the first driven wheel 24 are equal. A wide-pitch belt is driven to the outer wall of the drive wheel 22 closest to the detection assembly 12. The belt 25, a wide-pitch belt 25, is connected to a second driven pulley 26 at the end away from the driving pulley 22. The radius of the driving pulley 22 and the second driven pulley 26 is in a 1:2 ratio. Fixed collars 27 are fixedly connected to the inner walls of the first driven pulley 24 and the second driven pulley 26, respectively. The fixed collars 27 are all located on the movement path of the flexible shaft body 13. The inner walls of the fixed collars 27 are all fixedly connected to threaded rails 28. The outer walls of the threaded rails 28 are all fitted with rubber strips, and the spiral direction of the threaded rails 28 is consistent with the conveying direction of the flexible shaft body 13.

[0031] It should be noted that the output speeds of both sides of the drive motor 21 are equal, the radii of the active rotating wheel 22 at the output of the drive motor 21 are the same, and the radius ratio of the active rotating wheel 22 to the first driven rotating wheel 24 near the area of ​​the depilatory assembly 11 is equal. However, the radius ratio of the active rotating wheel 22 to the second driven rotating wheel 26 near the area of ​​the detection assembly 12 is 1:2. Therefore, the rotation speeds of the same fixed collar 27 in the depilatory area and the detection area are different due to the driving of the first driven rotating wheel 24 and the second driven rotating wheel 26. That is, the rotation speed ratio of the fixed collar 27 in the depilatory area to the fixed collar 27 in the detection area is 2:1.

[0032] The spiral direction of the threaded track 28 is consistent with the conveying direction of the flexible shaft body 13. For example, if the flexible shaft body 13 is conveyed from the deburring component 11 to the detection component 12 in a right-hand direction, then the spiral of the threaded track 28 is right-handed. When the flexible shaft body 13 passes through the inside of the fixing collar 27, the inclined surface of the spiral comes into contact with the surface of the flexible shaft body 13. When the fixing collar 27 rotates, the inclined surface of the spiral generates an axial component force on the flexible shaft body 13, similar to the principle of a screw pushing a nut in a straight line. This provides friction and prevents the flexible shaft body 13 from deviating through the spiral guide. The elasticity of the rubber strip ensures a tight fit with the surface of the flexible shaft body 13. Even if the flexible shaft body 13 jumps slightly during the conveying process, it can still maintain stable contact. Moreover, the single-turn track structure is simple to process, and the spiral has both traction and guiding functions, making it suitable for the flexible shaft body 13 that needs to be processed in this device.

[0033] A speed-regulating chamber 29 is installed on the upper surface of the processing platform 1. The speed-regulating chamber 29 is divided into upper and lower parts, and electric push rods 210 are evenly installed at the middle position of the upper and lower parts of the speed-regulating chamber 29. The upper and lower parts of the speed-regulating chamber 29 are slidably connected by the electric push rods 210. The lower roller group 211 is rotatably connected to the inner wall of the lower part of the speed-regulating chamber 29, and the upper roller group 212 is rotatably connected to the inner wall of the upper part of the speed-regulating chamber 29. Both the lower roller group 211 and the upper roller group 212 are composed of no less than three round shafts, and the upper and lower round shafts are arranged in parallel and staggered manner. Limiting collars 2 are fixedly connected to the outer walls of the round shafts in the lower roller group 211 and the upper roller group 212. 13. The flexible shaft body 13 is driven in an S-shape between the lower roller group 211 and the upper roller group 212 via the limiting collar 213, and the contact points between the flexible shaft body 13 and the upper and lower roller surfaces are not less than four to ensure uniform tension transmission. The winding angle formed by the flexible shaft body 13 through the limiting collar 213 is set to sixty degrees. A tension sensor 214 is installed on the side wall of the speed regulating chamber 29. The drive of the upper part of the speed regulating chamber 29 should be linked with the tension sensor 214 and start only when the tension exceeds the set range. When the tension sensor 214 detects tension fluctuation, the electric push rod 210 will rise or fall according to the fluctuation, thereby synchronously driving the upper roller group 212 to move.

[0034] It should be noted that the lower roller group 211 is composed of no less than three round shafts, and is horizontally parallel in design and is fixed on the processing platform 1 by the lower half of the speed regulating chamber 29. The distance between the axis of the round shafts is consistent, and the whole is distributed in a straight line at equal intervals. According to the conveying direction of the detection component 12, that is, lower shaft one, lower shaft two, and lower shaft three are arranged in sequence.

[0035] The upper roller group 212 is also composed of no less than three circular shafts, which are horizontally parallel and have a consistent axial spacing. The axial spacing of the circular shafts is equal to that of the lower roller group 211, and they are staggered with the circumference of the lower roller group 211. According to the conveying direction of the detection component 12, the upper shaft 1, upper shaft 2, and upper shaft 3 are arranged in sequence. The upper shaft 1 is located directly above the lower shaft 1 and lower shaft 2, the upper shaft 2 is located directly above the lower shaft 2 and lower shaft 3, and the upper shaft 3 is located directly above the right side of the lower shaft 3. Thus, the S-shaped winding path of the flexible shaft body 13 is: lower shaft 1 → upper shaft 1 → lower shaft 2 → upper shaft 2 → lower shaft 3 → upper shaft 3.

[0036] The flexible shaft body 13 is not simply placed on the surface of the round shaft, but is conveyed by wrapping and winding at a 60-degree angle through the limiting collar 213, forming a path similar to an S-shaped wave. Therefore, when the flexible shaft body 13 passes through the speed regulating chamber 29, the flexible shaft body 13 maintains surface contact with all the round shafts, rather than point contact. This winding method can ensure that no matter whether the upper round roller group 212 is raised or lowered, the flexible shaft body 13 always maintains stable contact with the lower round roller group 211 and the upper round roller group 212, and will not detach or slip.

[0037] By changing the winding length of the flexible shaft body 13 between the lower roller group 211 and the upper roller group 212, the input rate and output rate are different. The flexible shaft body 13 is set to be conveyed in the area of ​​the de-hairing component 11 at 2m / s. After passing through the speed regulating chamber 29, the excess flexible shaft body 13 will rise and increase the winding length, thereby reducing the output rate of the flexible shaft body 13 to 1m / s.

[0038] Specifically, assuming the flexible shaft body 13 enters the de-hairing assembly 11 at a speed of 2 m / s to complete surface treatment, it then enters the speed regulating chamber 29. At this time, the upper and lower parts of the speed regulating chamber 29 are in their initial relative positions. After the flexible shaft body 13 enters, under the constraint of the limiting collar 213, it wraps tightly against the surfaces of the upper and lower roller groups at a 60-degree angle, forming an S-shaped path of "lower shaft one → upper shaft one → lower shaft two → upper shaft two → lower shaft three → upper shaft three". This winding method evenly distributes the tension on the surface of the flexible shaft body 13 through multiple sets of surface contacts, avoiding deformation or wear caused by excessive local force. Since the detection assembly 12 area only requires a conveying speed of 1 m / s, the input speed (2 m / s) of the flexible shaft body 13 at the entrance of the speed regulating chamber 29 and the required speed (1 m / s) at the exit form a difference of 1 m / s, resulting in redundant accumulation of 1 meter of flexible shaft per second in the speed regulating chamber 29. This accumulation will cause... The flexible shaft body 13 generates additional lateral pressure on the upper and lower roller groups, triggering the tension sensor 214 installed on the side wall of the speed regulating chamber 29. When the sensor detects that the tension value exceeds the set threshold, it immediately sends a signal to the electric push rod 210. The electric push rod 210, as the driving component of the upper roller group 212, will extend synchronously at this time, driving the upper part of the speed regulating chamber 29 and the upper roller group 212 to move upward as a whole. As the vertical distance between the upper and lower roller groups increases, the vertical travel distance of each segment of the flexible shaft body 13 in the S-shaped path is lengthened. Through this material storage adjustment, the conveying speed of the flexible shaft body 13 at the outlet of the speed regulating chamber 29 is stably controlled at 1m / s, which not only meets the low-speed requirement of the detection component 12, but also ensures that the tension fluctuation of the flexible shaft body 13 does not exceed the fluctuation range in the prior art through the real-time linkage between the tension sensor 214 and the electric push rod 210, thus avoiding the occurrence of stretching or slack.

[0039] The fixing collar 27 located between the depilatory assembly 11 and the speed control chamber 29 is powered by the output end of the dual-axis servo motor 21 near the depilatory assembly 11. The driving wheel 22 fixed at this output end is connected to the first driven wheel 24 via a narrow belt 23. Since the radius of the driving wheel 22 and the first driven wheel 24 are exactly the same, when the speeds at both output ends of the motor are the same, the speed of the first driven wheel 24 also remains the same as that at the output end of the drive motor 21. The rotation speed drives the fixing ring 27 on its inner wall to rotate at the same speed. The threaded track 28 on the inner wall of the fixing ring 27 adopts a right-handed design, which is consistent with the rightward conveying direction of the flexible shaft body 13. The rubber strip sleeved on the outer wall of the track has good elasticity and wear resistance. When the flexible shaft body 13 passes through the ring at a speed of 2m / s, the rubber strip tightly fits the spiral pattern of the outer steel wire of the flexible shaft body 13 under its own elasticity, which increases the friction of the contact surface and avoids damage to the surface after deburring due to hard contact. Following the same principle and process, the fixed collar 27 near the detection component 12 is powered by the output end of the drive motor 21 on the other side. The active wheel 22 of this output end is connected to the second driven wheel 26 through a wide belt 25. The radius ratio of the two is 1:2. While the motor speed remains unchanged, the speed of the second driven wheel 26 is reduced to half, so that the speed of the fixed collar 27 in this area is half that of the collar in the deburring area. This speed design is precisely matched with the 1m / s conveying rate required by the detection component 12. The inner wall of the fixed collar 27 also adopts a right-hand threaded track 28. The way the rubber strip is attached to the surface of the flexible shaft is the same as that in the deburring area. However, due to the reduction in speed, the axial force generated is also reduced accordingly, which is just right to meet the traction requirements of the flexible shaft in the low-speed range.

[0040] When the fixed collar 27 rotates, the inclined surface of the right-hand threaded track 28 and the surface of the flexible shaft body 13 generate relative motion, forming an axial component force along the conveying direction, ensuring that it is conveyed along the concentric axis of the deburring component 11 and the speed regulating chamber 29. Similarly, it also ensures that the flexible shaft body 13 is conveyed along the concentric axis of the detection component 12 and the speed regulating chamber 29.

[0041] The drive motor 21 serves as the power source for the entire traction speed regulation mechanism 2. Its two output shafts rotate synchronously at the same speed. Through the transmission of the drive pulley 22, the narrow belt 23, and the wide belt 25, it drives the first driven pulley 24 and the second driven pulley 26 respectively, so that the fixed collars 27 on both sides form a speed ratio of 2:1, which precisely adapts to the speed difference between the dehairing area (2m / s) and the detection area (1m / s). Inside the speed regulation chamber 29, the lower roller group 211 is always fixed, providing a stable support point for the flexible shaft. The upper roller group 212 can move up and down in a linear form under the drive of the electric push rod 210. Its motion state is completely controlled by the detection signal of the tension sensor 214: when the tension of the flexible shaft is too large (indicating that the input rate is greater than the output rate), the electric push rod 210 extends to drive the upper roller group to rise to increase the storage of material; when the tension is too small (indicating that the input rate is less than the output rate), the electric push rod 210 retracts to drive the upper roller group to fall to release the storage of material.

[0042] The movement of each component forms a closed-loop system through the coordinated operation of mechanical transmission and electrical control: the drive motor 21 provides stable power, the fixed collar 27 realizes zoned traction, the speed regulating chamber 29 completes the speed conversion, and the tension sensor 214 and electric push rod 210 ensure tension stability. Ultimately, the flexible shaft body 13 achieves continuous, stable, and precise conveying throughout the entire processing from deburring to inspection, meeting the differentiated speed requirements of different processes.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pulling structure for soft shaft continuous machining, used for continuous machining processing of a soft shaft body (13), comprising a machining platform (1), characterized in that: The upper part of the processing platform (1) is provided with a traction speed regulation mechanism (2), which comprises a lower roller group (211) and an upper roller group (212). The lower roller group (211) is kept stable as a whole, and the upper roller group (212) moves up and down as a whole. In the initial state, the soft shaft body (13) first contacts the lower roller group (211) and is conveyed from above. The winding length of the soft shaft body (13) is changed by the lifting of the upper roller group (212) based on the lower roller group (211). When it rises, the winding path of the soft shaft body (13) between the lower roller group (211) and the upper roller group (212) is lengthened, and the storage capacity is increased, maximizing the adjustment range. The traction speed regulation mechanism (2) further comprises a plurality of fixed collars (27), which are symmetrically distributed on both sides of the lower roller group (211) and the upper roller group (212), thereby stabilizing the soft shaft body (13) in different speed states at different positions.

2. A soft shaft continuous processing pulling structure according to claim 1, characterized in that: The upper part of the processing platform (1) is provided with a traction speed regulation mechanism (2), which comprises a lower roller group (211) and an upper roller group (212). The lower roller group (211) is kept stable as a whole, and the upper roller group (212) moves up and down as a whole. In the initial state, the soft shaft body (13) first contacts the lower roller group (211) and is conveyed from above. The winding length of the soft shaft body (13) is changed by the lifting of the upper roller group (212) based on the lower roller group (211). When it rises, the winding path of the soft shaft body (13) between the lower roller group (211) and the upper roller group (212) is lengthened, and the storage capacity is increased, maximizing the adjustment range.

3. The soft shaft continuous processing traction structure according to claim 1, characterized in that: The traction speed regulation mechanism (2) further comprises a driving motor (21) installed on the upper part of the processing platform (1). The driving motor (21) is a double-shaft servo motor. The output shafts of the driving motor (21) are fixedly connected with driving pulleys (22).

4. The soft shaft continuous processing traction structure according to claim 2, characterized in that: The outer wall of the driving pulley (22) near the detection assembly (12) is drivingly connected with a wide pitch belt (25). The end of the wide pitch belt (25) away from the driving pulley (22) is drivingly connected with a second driven pulley (26). The radius of the driving pulley (22) is twice that of the second driven pulley (26).

5. The soft shaft continuous processing traction structure according to claim 2, characterized in that: The outer wall of the driving pulley (22) near the detection assembly (12) is drivingly connected with a wide pitch belt (25). The end of the wide pitch belt (25) away from the driving pulley (22) is drivingly connected with a second driven pulley (26). The radius of the driving pulley (22) is twice that of the second driven pulley (26).

6. The soft shaft continuous processing pulling structure according to claim 1, characterized in that: The inner walls of the first driven pulley (24) and the second driven pulley (26) are fixedly connected with the fixed collars (27). The fixed collars (27) are located on the movement path of the soft shaft body (13). The inner walls of the fixed collars (27) are fixedly connected with threaded tracks (28). The outer walls of the threaded tracks (28) are sleeved with rubber strips. The spiral direction of the threaded tracks (28) is consistent with the conveying direction of the soft shaft body (13).

7. The soft shaft continuous processing pulling structure according to claim 1, characterized in that: The upper surface of the processing platform (1) is provided with a speed regulation bin (29), the speed regulation bin (29) is divided into two parts, and the middle position of the two parts is uniformly provided with an electric push rod (210); the upper and lower parts of the speed regulation bin (29) are connected by the electric push rod (210).

8. The soft shaft continuous processing pulling structure according to claim 1, characterized in that: The lower roller group (211) is rotatably connected to the inner side wall of the lower part of the speed regulation bin (29), and the upper roller group (212) is rotatably connected to the inner side wall of the upper part of the speed regulation bin (29); the lower roller group (211) and the upper roller group (212) are each composed of a plurality of circular shafts, and the upper and lower circular shafts are arranged in parallel and staggered.

9. The soft shaft continuous processing pulling structure according to claim 1, characterized in that: The outer wall of the circular shaft in the lower roller group (211) and the upper roller group (212) is fixedly connected with a limiting sleeve ring (213), the soft shaft body (13) is s-shapedly transmitted between the lower roller group (211) and the upper roller group (212) through the limiting sleeve ring (213), the contact points between the soft shaft body (13) and the upper and lower circular shaft surfaces are not less than four, so that the tension is uniformly transmitted, and the winding angle formed by the soft shaft body (13) through the limiting sleeve ring (213) is set to sixty degrees.

10. The soft shaft continuous processing pulling structure according to claim 7, characterized in that: The side wall of the speed regulation bin (29) is provided with a tension sensor (214), the driving of the upper part of the speed regulation bin (29) is linked with the tension sensor (214), and the driving is started only when the tension exceeds the set range; when the tension sensor (214) detects the tension fluctuation, the electric push rod (210) will rise or fall according to the fluctuation, and then synchronously drive the upper roller group (212) to move.

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