Long capillary straightening and cutting apparatus

Abstract

The application discloses a long capillary straightening and cutting device, and relates to the technical field of straightening devices.The device comprises a rack, a straightening assembly and a traction cutting assembly arranged along the capillary conveying direction, a detection assembly arranged between an external feeding assembly and the straightening assembly, a verification pulling assembly for pulling back the capillary, a torsion releasing assembly for releasing the accumulated torsion of the capillary, and a control assembly.The detection assembly can output a deflection out-of-limit state before the capillary enters the straightening assembly.The verification pulling assembly can pull back the capillary by a preset verification length in a direction away from the straightening assembly after the detection assembly outputs the deflection out-of-limit state.The control assembly determines the torsion accumulation state of the capillary according to the deflection out-of-limit state before and after the verification pulling.The application can reduce the situation that the capillary directly enters the straightening assembly with torsion accumulation or continues to accumulate at the entrance of the straightening assembly, and improve the posture stability in the long capillary continuous straightening and cutting process.

Description

Technical Field

[0001] This invention relates to the field of straightening equipment technology, specifically to a long capillary straightening and cutting equipment. Background Technology

[0002] Long capillary tubes are widely used in refrigeration, heat exchange, and precision fluid transport. For ease of storage and transportation, capillary tubes are typically stored in coils. During subsequent processing, a feeding mechanism continuously releases the coiled capillary tubes, which then undergo straightening, traction, and cutting to form straight sections of predetermined lengths. Due to the small diameter and long length of capillary tubes, and the formation of coiling memory during storage, capillary tubes are prone to spatial bending, spiral deviation, and circumferential posture changes after being released from the coil.

[0003] In the prior art, Chinese utility model patent with publication number CN209050395U discloses an integrated decoating and cutting straightening machine for capillary processing, which includes a processing table on which a guiding mechanism, a horizontal straightening mechanism, a vertical straightening mechanism, a length measuring mechanism, a decoating mechanism, and a cutting mechanism are sequentially arranged. This solution straightens the capillary through the horizontal and vertical straightening mechanisms, and completes fixed-length cutting in conjunction with the length measuring and cutting mechanisms, enabling continuous processing of capillary feeding, straightening, and cutting.

[0004] However, the aforementioned existing technologies mainly focus on the straightening, length counting, clamping, and cutting processes after the capillary enters the straightening or feeding mechanism, without addressing the detection and treatment of torsional accumulation on the unwinding side after the capillary is released from the coil and before entering the straightening assembly. In actual processing, when the capillary is pulled out from the coil, it may accumulate torsional force or spiral sway on the unwinding side due to coil memory, changes in unwinding direction, and traction constraints. If the straightening assembly directly applies a straightening effect to the capillary in this state, the torsional accumulation on the unwinding side is easily carried into the straightening area or continues to accumulate at the entrance of the straightening assembly, making the capillary's posture unstable when entering the straightening assembly. Summary of the Invention

[0005] The purpose of this invention is to provide a long capillary straightening and cutting device to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A long capillary straightening and cutting device includes a frame and a straightening assembly and a traction cutting assembly arranged along the capillary conveying direction; it also includes: a detection assembly, disposed between an external feeding assembly and the straightening assembly, comprising at least three sets of guide detection units spaced apart along the capillary conveying direction, each guide detection unit allowing the capillary to pass through and capable of generating attitude deflection under lateral action of the capillary, used to output a deflection exceeding the limit state; a verification pullback assembly, used to pull back the capillary along the direction away from the straightening assembly by a preset verification length after the detection assembly outputs a deflection exceeding the limit state, so as to release the deflection effect of the capillary on the detection assembly and reset the detection assembly; and a torsion release assembly, used to perform a torsion release action on the capillary; the straightening assembly can be in the straightening state and the torsion release assembly. The control component switches between torsion avoidance states. The straightening state is when the straightening component applies a straightening effect to the capillary, while the torsion release avoidance state is when the straightening component releases or reduces the straightening constraint on the capillary, creating an avoidance gap for the capillary to release torsion. The control component includes a state recognition module, a verification command generation module, and a torsion release command generation module. The state recognition module determines the torsion accumulation state of the capillary based on the deflection exceeding the limit state of the detection component before and after verification pullback. The verification command generation module generates a verification pullback command to drive the verification pullback component after the detection component outputs a deflection exceeding the limit state. The torsion release command generation module generates a straightening avoidance command and a torsion release initiation command when the state recognition module determines that the capillary has a torsion accumulation state.

[0008] A further improvement of the technical solution of the present invention is that: the torsion relief assembly includes a first linear module, which is arranged along the capillary conveying direction. The movable end of the first linear module is fixedly connected to an installation arm, and the end of the installation arm is fixedly connected to a sleeve. The two ends of the sleeve are respectively fixedly connected to a first cover plate and a second cover plate. A slide cylinder is slidably connected inside the sleeve, and an elastic cone head is rotatably connected to one end of the slide cylinder. The elastic cone head is provided with several slits spaced apart along the circumference. The elastic cone head is divided into several claw heads by several slits. A wedge block is fixedly connected to the outside of each claw head. The wedge block is used in conjunction with the first cover plate. The first cover plate has a wedge pressing surface for use with the wedge block. A return spring is provided between the slide cylinder and the second cover plate.

[0009] A further improvement of the technical solution of the present invention is that: a number of first locking teeth are fixedly connected to the side of the elastic cone near the slide cylinder, and the first locking teeth are arranged at equal intervals along the circumference of the elastic cone; a number of second locking teeth that cooperate with the first locking teeth are fixedly connected inside the sleeve, and the first locking teeth and the second locking teeth engage when the elastic cone closes to restrict the rotation of the elastic cone relative to the sleeve.

[0010] A further improvement of the technical solution of the present invention is that: the detection component includes a second linear module, the movable end of the second linear module is fixedly connected to a mounting frame, and the inner side of the mounting frame is fixedly connected to two symmetrically arranged mounting rods, the axial direction of the mounting rods being consistent with the capillary conveying direction; a plurality of guiding detection units are equidistantly arranged along the axial direction of the mounting rods, and each guiding detection unit includes a mounting seat fixedly connected between two mounting rods, the mounting seat having a spherical groove inside, a universal ball inside the spherical groove, and a deflector cylinder penetrating through the center of the universal ball; each group of guiding detection units is correspondingly provided with There are two hooks, two guide wheels, and two displacement sensors. The two hooks are slidably connected to the outside of the two mounting rods, and the two guide wheels are fixedly connected to the two mounting rods. Slings are connected to both sides of the deflector cylinder. The two slings pass over the guide wheels on the corresponding sides and are connected to the hooks on the corresponding sides. The two displacement sensors are fixedly connected to the outside of the two mounting rods and are used to monitor the position of the corresponding hooks in the axial direction of the mounting rods. A cylinder is fixedly connected to one end of the mounting frame, and a linkage pusher is fixedly connected to the movable end of the cylinder. The linkage pusher is used to synchronously push the hooks on the two mounting rods to reset.

[0011] A further improvement of the technical solution of the present invention is that: the verification pull-back assembly includes an electric push rod fixedly connected to the mounting frame. The electric push rod is arranged along the capillary conveying direction. A push plate is fixedly connected to the movable end of the electric push rod. Two slide rods are slidably mounted on the push plate. A limit head is fixedly connected to one end of the slide rod near the electric push rod, and a force plate is fixedly connected between the other ends. A buffer spring is sleeved on the outside of the two slide rods and between the force plate and the push plate. An electric clamp is fixedly installed on the top of the force plate. An arc-shaped hoop is fixedly connected to the side of the two clamps of the electric clamp that are close to each other. A flexible pad is provided on the inner side of the arc-shaped hoop.

[0012] A further improvement of the technical solution of the present invention is that: the straightening assembly includes a base fixedly connected to the frame, a bidirectional lead screw rotatably connected inside the base, a motor fixedly connected outside the base, the output end of the motor extending into the interior of the base and fixedly connected to one end of the bidirectional lead screw; sliders are symmetrically threaded to the outside of the bidirectional lead screw, a first roller seat and a second roller seat are fixedly connected to the top of the two sliders respectively, a plurality of second straightening rollers are rotatably connected to the top of the second roller seat, a plurality of adjusting screw holes are provided on the first roller seat, an adjusting screw is threadedly connected inside each adjusting screw hole, one end of the adjusting screw passes through the first roller seat and is rotatably connected to an adjusting block, the adjusting block is slidably connected to the first roller seat; a first straightening roller is rotatably connected to the top of each adjusting block.

[0013] A further improvement of the technical solution of the present invention is that: a number of flexible ribs are formed on the side of the flexible pad near the capillary tube, the flexible ribs extend circumferentially along the capillary tube, the number of flexible ribs are arranged at intervals along the axial direction of the capillary tube, and a clearance groove is formed between two adjacent flexible ribs.

[0014] A further improvement of the technical solution of the present invention is that: the universal ball is configured as a hollow spherical shell structure, the deflector cylinder is configured as a thin-walled cylindrical structure, and both ends of the deflector cylinder are formed with flared guide sections.

[0015] By adopting the above technical solution, the technical effects achieved by this invention compared to the prior art are as follows: 1. By setting up a torsion relief component and a detection component, this invention enables the torsion accumulation caused by the capillary due to winding memory, changes in unwinding direction, or traction constraints to be reflected and processed before entering the straightening area. This reduces the possibility of the capillary carrying torsion accumulation directly into the straightening component or continuing to accumulate at the entrance of the straightening component. It can respond to abnormal postures on the unwinding side before straightening and release the torsion accumulation on the unwinding side under lower constraint conditions when torsion relief is needed. This helps to reduce the impact of torsion accumulation on the stress state of subsequent straightening, allowing the capillary to enter the straightening, traction, and cutting process with a more stable posture, thereby improving the posture stability and process connection stability during the continuous processing of long capillary.

[0016] 2. By setting the torsion-releasing action as an axial sweeping action along the capillary conveying direction, and by making the torsion-releasing part form different engagement states during forward and reverse movement, the capillary can be subject to controllable circumferential constraint during torsion release, while reducing frictional interference to the capillary during return. Thus, the torsion-releasing component can axially release the torsion accumulation formed on the unwinding side without continuously clamping the capillary, reducing the torsion-releasing structure itself from becoming a new torsion accumulation point.

[0017] 3. This invention sets up a universal guide detection structure and converts the attitude deflection of the deflection cylinder into the displacement of the hook along the direction of the mounting rod, so that the spatial sway or torsional accumulation before the capillary enters the straightening area can be detected in a more stable displacement form; the linkage push frame is used to reset the hook, which is beneficial to restore the detection benchmark after one detection is completed, so that the subsequent pull-back verification or re-detection process maintains the same initial state.

[0018] 4. This invention, by setting up a verification pull-back component, enables the capillary tube to be clamped and pulled back a preset distance in the direction away from the straightening component after the detection component outputs an over-deflection state. This relieves the original deflection effect of the capillary tube on the detection component and provides conditions for the detection component to reset and for subsequent re-detection. Instead of judging based solely on a single over-deflection state, a verification process of pull-back and re-detection after deflection is formed, which helps to improve the accuracy of judging the torsional accumulation state on the unwinding side. Among them, the buffer spring can absorb the force fluctuations during the clamping and pull-back process, and the arc-shaped hoop and flexible pad can reduce the risk of the capillary tube being pinched or crushed, thereby improving the stability of the verification pull-back action.

[0019] 5. This invention provides flexible ribs that extend circumferentially along the capillary and are spaced apart axially along the capillary on the flexible pad. This allows the flexible pad to form multiple circumferential flexible contacts when clamping the capillary, improving the axial anti-slip capability during the verification pull-back process. At the same time, an arc-shaped relief groove is formed between adjacent flexible ribs, giving the outer wall of the capillary local deformation relief space when clamped. This helps to reduce the risk of the capillary being damaged or crushed while ensuring the stability of the pull-back clamping. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 This is a top view of the overall structure of the invention; Figure 3 This is a partial structural schematic diagram of the torsion relief component of the present invention; Figure 4 This is a partial cross-sectional view of the torsion relief component of the present invention. Figure 5 This is a schematic diagram of the detection component of the present invention; Figure 6 This is one of the structural schematic diagrams of the straightening component of the present invention; Figure 7 This is a second schematic diagram of the straightening component of the present invention; Figure 8 This is a partial cross-sectional view of the guiding detection unit of the present invention; Figure 9 This is a schematic diagram of the arc-shaped hoop of the present invention.

[0022] In the diagram: 1. Frame; 2. Traction cutting assembly; 3. Torque release assembly; 301. First linear module; 302. Mounting arm; 311. Sleeve; 312. First cover plate; 313. Second cover plate; 314. Elastic cone; 315. Wedge block; 316. Slit; 317. Slide cylinder; 318. Return spring; 321. First locking tooth; 322. Second locking tooth; 4. Detection assembly; 401. Mounting bracket; 402. Mounting rod; 403. Second linear module; 411. Mounting base; 412. Universal ball; 413. Deflector cylinder; 414. Guide wheel; 415. Sling; 416. Hook; 41 7. Displacement sensor; 421. Cylinder; 422. Linkage push frame; 5. Straightening assembly; 501. Base; 502. Bidirectional lead screw; 503. Slider; 504. First roller seat; 505. Second roller seat; 506. Adjusting screw; 507. Adjusting block; 508. First straightening roller; 509. Second straightening roller; 510. Motor; 6. Verification pullback assembly; 601. Electric push rod; 602. Push plate; 603. Slide rod; 604. Force plate; 605. Buffer spring; 606. Limit head; 607. Electric clamp; 608. Arc-shaped hoop; 609. Flexible pad; 610. Flexible rib. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the embodiments.

[0024] Example 1 like Figures 1 to 9As shown, this invention provides a long capillary straightening and cutting device, including a frame 1 and a straightening component 5 and a traction cutting component 2 arranged along the capillary conveying direction; it also includes: a detection component 4, disposed between the external feeding component and the straightening component 5, comprising at least three sets of guide detection units spaced apart along the capillary conveying direction, each guide detection unit allowing the capillary to pass through and capable of generating attitude deflection under the lateral action of the capillary, used to output a deflection exceeding the limit state; a verification pullback component 6, used to pull back the capillary along the direction away from the straightening component 5 by a preset verification length after the detection component 4 outputs a deflection exceeding the limit state, so as to release the deflection effect of the capillary on the detection component 4 and reset the detection component 4; a torsion release component 3, used to perform a torsion release action on the capillary; the straightening component 5 can... The control component can switch between a straightening state and a torque release and avoidance state. The straightening state is when the straightening component 5 applies a straightening effect to the capillary, and the torque release and avoidance state is when the straightening component 5 releases or reduces the straightening constraint on the capillary and forms an avoidance gap for the capillary to release torque. The control component includes a state recognition module, a verification command generation module, and a torque release command generation module. The state recognition module is used to determine the torsion accumulation state of the capillary based on the deflection over-limit state of the detection component 4 before and after the verification pullback. The verification command generation module is used to generate a verification pullback command to drive the verification pullback component 6 after the detection component 4 outputs the deflection over-limit state. The torque release command generation module is used to generate a straightening and avoidance command and a torque release start command when the state recognition module determines that the capillary has a torsion accumulation state.

[0025] In this embodiment, by setting the torsion relief component 3 and the detection component 4, the torsion accumulation caused by the capillary due to winding memory, changes in unwinding direction, or traction constraints can be reflected and processed before entering the straightening area. This reduces the possibility of the capillary carrying torsion accumulation directly entering the straightening component 5 or continuing to accumulate at the entrance of the straightening component 5. It can respond to abnormal postures on the unwinding side before straightening and release the torsion accumulation on the unwinding side under lower constraint conditions when torsion relief is needed. This helps to reduce the impact of torsion accumulation on the stress state of subsequent straightening, allowing the capillary to enter the straightening, traction, and cutting process with a more stable posture, thereby improving the posture stability and process connection stability during the continuous processing of long capillary.

[0026] During work: The long capillary tube is set in the form of a coil on the feeding side. After the equipment is started, the capillary tube is continuously released from the feeding side and moves towards the straightening side along the predetermined conveying direction. Before entering the straightening area, the capillary tube passes through the attitude detection area on the unwinding side. This area is located between the feeding side and the straightening area. Therefore, the capillary tube has not yet been subjected to the forced straightening constraint of the straightening component 5. Its spatial sway, spiral offset or torsion accumulation caused by coiling memory, unwinding direction change or traction constraint is more likely to be manifested at this stage.

[0027] Under normal unwinding conditions, the capillary smoothly passes through the detection area along the theoretical conveying direction. The detection component 4 maintains an attitude change within the allowable range. The equipment continues to execute the subsequent straightening, traction, and cutting processes. At this time, the straightening component 5 is in the straightening state, applying a straightening effect to the capillary, so that the capillary is continuously straightened during the traction conveying process, and the traction cutting component 2 completes the fixed-length conveying and cutting. When there is a large accumulation of torsion or spiral sway after the capillary is released from the coil, the capillary will exert a lateral effect on the detection component 4 before entering the straightening component 5, causing the detection component 4 to produce an attitude deflection beyond the preset range. This deflection state indicates that the capillary has an attitude change on the unwinding side that is not suitable for direct entry into the straightening area. At this time, the equipment does not continue to allow the capillary to directly enter the straightening component 5, but instead enters the verification pull-back process.

[0028] During the verification pullback process, the capillary retracts along the direction away from the straightening component 5 by a preset verification length. As the capillary retracts, the lateral thrust originally acting on the detection component 4 is released, and the detection component 4 gradually returns to its initial or near-initial reset state. This reset state provides a new detection benchmark for subsequent judgment, so that when the capillary passes through or acts on the detection area again, its posture change can be reflected again. After the capillary pullback is completed and the detection component 4 is reset, the equipment puts the unwinding side capillary back into a state suitable for detection. At this time, the capillary is not in a high-tension state of being forcibly straightened, nor is it in a completely unrestrained state. Instead, it retains a certain low-tension shaping condition within the detection area. If the capillary itself does not have continuous torsional accumulation, when it passes through the detection area again, the detection component 4 will not produce an over-limit deflection again, and the equipment can resume the normal straightening and cutting process.

[0029] If the capillary itself still has torsion accumulation on the unwinding side or a tendency of spiral sway, even after being pulled back and reset, when it re-enters the detection area, it will still cause the detection component 4 to produce a deflection exceeding the limit. The control component determines that the capillary has a torsion accumulation state based on the deflection exceeding the limit state before and after the pull-back. This state indicates that the abnormal posture of the capillary is not simply formed by a single unwinding disturbance, but is related to the torsion accumulation formed by the capillary's own winding memory, unwinding posture, or traction constraint. Torsion release processing is required before entering the straightening area.

[0030] Once it is determined that the capillary is in a state of torsion accumulation, the straightening component 5 switches from the straightening state to the torsion release and avoidance state. In the torsion release and avoidance state, the straightening component 5 releases or reduces the straightening constraint on the capillary and forms an avoidance gap on the capillary transport path to allow it to release torsion. At this time, the capillary is no longer forcibly pressed by the straightening component 5, and the torsion accumulation formed on the unwinding side is less likely to continue to be suppressed and accumulated at the straightening inlet. Subsequently, the torsion release component 3 performs a torsion release action on the capillary. Since the straightening component 5 is already in the avoidance state, the capillary can release the torsion accumulation formed on the unwinding side under lower constraint conditions. During the torsion release process, the circumferential attitude of the capillary gradually becomes stable, and the torsion accumulation that might have been transmitted to the straightening inlet is released or weakened, thereby reducing its influence on the subsequent straightening force state. After the torsion release is completed, the capillary tube re-enters the unwinding side posture detection process. If the detection component 4 does not output a deflection exceeding the limit, it means that the posture of the capillary tube before entering the straightening area is within the allowable range. The straightening component 5 resumes the straightening state, and the traction and cutting component 2 continues to perform traction and cutting. If the detection component 4 still outputs a deflection exceeding the limit, the equipment can perform pull-back verification or torsion release again until the unwinding side posture of the capillary tube meets the conditions for entering the straightening area.

[0031] In one specific embodiment, the traction cutting assembly 2 includes a third linear module, a traction seat fixedly connected to the movable end of the third linear module, a cutting seat fixedly connected to the frame 1, a length-counting wheel, an encoder, a cutting cylinder, a cutter, and a cutting support. The traction seat is equipped with a clamp for holding the capillary tube. The clamp can hold the capillary tube and move with the traction seat to pull the capillary tube along the conveying direction. The length-counting wheel is located between the traction seat and the cutting seat and is connected to the encoder for collecting the conveying length of the capillary tube. The cutting cylinder is fixedly connected to the cutting seat, and its movable end is connected to the cutter. The cutting support is located below the cutter and is used to cooperate with the cutter to complete the cutting after the capillary tube reaches a preset length. This is a common existing technology for pipeline cutting, so it is not described in detail.

[0032] Example 2 like Figure 1 , Figure 3 and Figure 4As shown, based on Embodiment 1, the present invention provides a technical solution: Preferably, the torsion relief assembly 3 includes a first linear module 301, which is arranged along the capillary conveying direction. The movable end of the first linear module 301 is fixedly connected to an mounting arm 302, and the end of the mounting arm 302 is fixedly connected to a sleeve 311. The two ends of the sleeve 311 are respectively fixedly connected to a first cover plate 312 and a second cover plate 313. The sleeve 311 is slidably connected to a slide cylinder 317 inside, and one end of the slide cylinder 317 is rotatably connected to an elastic cone head 314. The elastic cone head 314 is provided with a plurality of slits 316 spaced apart along the circumference. The elastic cone head 314 is divided by the plurality of slits 316 to form a plurality of claw heads. Each claw head is fixedly connected to a wedge block 315 on its outside. The wedge block 315 is used in conjunction with the first cover plate 312. The first cover plate 312 has a wedge pressing surface for use with the wedge block 315. A return spring 318 is provided between the slide cylinder 317 and the second cover plate 313.

[0033] During the capillary torsion release process, if the torsion release structure always maintains the same clamping or guiding state, it is easy to have insufficient constraint during the torsion release sweep, and unnecessary friction interference to the capillary during the return stroke, affecting the continuity and stability of the torsion release action. In this embodiment, by setting the torsion release action as an axial sweeping action along the capillary conveying direction, and by making the torsion release part form different engagement states during forward and reverse movement, the capillary can be subject to controllable circumferential constraint during torsion release, while reducing frictional interference to the capillary during return. Thus, the torsion release component 3 can axially release the torsion accumulation formed on the unwinding side without continuously clamping the capillary, reducing the torsion release structure itself from becoming a new torsion accumulation point.

[0034] During the torsion release process, the first linear module 301 drives the mounting arm 302 and the sleeve 311 to reciprocate along the capillary conveying direction. The capillary passes through the slide cylinder 317 and the elastic cone 314. The slide cylinder 317 and the elastic cone 314 can slide axially inside the sleeve 311. When the sleeve 311 moves along the capillary conveying direction, a relative action occurs between the capillary and the elastic cone 314. The elastic cone 314 gradually closes under the cooperation of the wedge block 315 and the wedge pressing surface of the first cover plate 312, so that multiple claws move inward toward the outer periphery of the capillary. At this time, the elastic cone 314 does not clamp the capillary, but forms a contact state that can apply circumferential constraint to the capillary as the sleeve 311 moves axially. This allows the sleeve 311 to drive the capillary to release the torsion accumulation formed on its unwinding side when sweeping axially.

[0035] When the sleeve 311 moves away from the capillary conveying direction, the slide 317 and the elastic cone 314 return to the reset position under the action of the reset spring 318. The elastic cone 314 releases or reduces the degree of contraction, and the contact between the capillary and the elastic cone 314 weakens. At this time, the axial resistance and circumferential constraint on the capillary during the return stroke of the sleeve 311 are small, which can reduce the interference of the return stroke on the capillary posture, so that the torsion release assembly 3 can return to the starting position after completing one torsion release sweep, providing conditions for the next torsion release action.

[0036] The slide cylinder 317 and the elastic cone 314 are rotatably connected, allowing the elastic cone 314 to rotate relative to the slide cylinder 317 when it is not restricted. When the capillary tube has slight circumferential contact or local friction when passing through the elastic cone 314, the elastic cone 314 can generate a certain degree of follow-up, reducing the hard friction between the capillary tube surface and the torsion relief structure. This is beneficial for balancing the circumferential constraint required for the torsion relief action with the low resistance passing effect during normal return and tube insertion, thereby improving the smoothness of the torsion relief process.

[0037] like Figure 3 and Figure 4 As shown, preferably, a plurality of first locking teeth 321 are fixedly connected to the side of the elastic cone 314 near the slide cylinder 317, and the first locking teeth 321 are arranged at equal intervals along the circumference of the elastic cone 314; a plurality of second locking teeth 322 that cooperate with the first locking teeth 321 are fixedly connected inside the sleeve 311, and the first locking teeth 321 and the second locking teeth 322 engage when the elastic cone 314 is closed, so as to restrict the rotation of the elastic cone 314 relative to the sleeve 311.

[0038] If the elastic cone 314 can still rotate freely relative to the sleeve 311 after it is retracted, it is easy to rotate along with the circumferential action of the capillary, which makes it difficult to form a stable torsion limiting effect during the torsion sweep, affecting the release effect of torsion accumulation. In this embodiment, by providing an engaging tooth structure between the elastic cone 314 and the sleeve 311, the elastic cone 314 can be restricted from relative rotation in the retracted state, thereby enhancing the circumferential constraint capability during the torsion-releasing sweeping process; while in the unretracted or return state, the elastic cone 314 can still maintain a certain follow-up space, which is beneficial to reduce the frictional interference to the capillary in the non-torsion-releasing stage, so that the torsion-releasing component 3 can form differentiated constraint states in different working stages, thereby improving the effectiveness of the torsion-releasing action.

[0039] When the elastic cone 314 is not retracted, it can rotate relative to the slide cylinder 317. When the capillary passes through the elastic cone 314, the elastic cone 314 can rotate slightly with the slight circumferential action of the capillary, thereby reducing the frictional resistance when the capillary passes through. At this time, the first locking tooth 321 and the second locking tooth 322 have not yet formed a stable engagement, and the elastic cone 314 is mainly in a low-resistance follower state. When the sleeve 311 performs a torque-releasing action along the capillary conveying direction, the elastic cone 314 retracts under the cooperation of the wedge block 315 and the wedge pressing surface. As the elastic cone 314 retracts inward and undergoes an axial position change relative to the sleeve 311, the first locking tooth 321 and the second locking tooth 322 gradually engage. After engagement, the rotation of the elastic cone 314 relative to the sleeve 311 is restricted. The elastic cone 314 no longer rotates only circumferentially with the capillary, but can form a relatively stable circumferential constraint relationship with the sleeve 311.

[0040] In this state, when the first linear module 301 drives the sleeve 311 to move axially along the capillary, the elastic cone 314 can sweep the capillary axially in a restricted rotation state, so that the torsional accumulation of the capillary is transmitted and released axially. If the locking teeth are not present, the elastic cone 314 may rotate with the capillary during the torsion release process, making it difficult for the axial sweep of the sleeve 311 to form an effective torsion limiting effect. However, with the first locking teeth 321 and the second locking teeth 322 provided, the elastic cone 314 can obtain a more stable torsion limiting foundation during the winding stage, thereby improving the torsion release action's effect on handling the torsion accumulation on the unwinding side.

[0041] Example 3 like Figure 5 and Figure 8As shown, based on Embodiment 2, the present invention provides a technical solution: Preferably, the detection component 4 includes a second linear module 403, the movable end of the second linear module 403 is fixedly connected to a mounting frame 401, and the inner side of the mounting frame 401 is fixedly connected to two symmetrically arranged mounting rods 402, the axial direction of the mounting rods 402 being consistent with the capillary conveying direction; a plurality of guiding detection units are equidistantly arranged along the axial direction of the mounting rods 402, and each guiding detection unit includes a mounting seat 411 fixedly connected between two mounting rods 402, the mounting seat 411 having a spherical groove inside, a universal ball 412 being arranged inside the spherical groove, and a deflector cylinder 413 penetrating through the center of the universal ball 412; each group of guiding detection units is correspondingly provided with two hooks 416. Two guide wheels 414 and two displacement sensors 417 are slidably connected to the outside of two mounting rods 402. The two guide wheels 414 are fixedly connected to the two mounting rods 402. Two slings 415 are connected to both sides of the bias cylinder 413. The two slings 415 pass around the guide wheels 414 on the corresponding side and are connected to the hooks 416 on the corresponding side. The two displacement sensors 417 are fixedly connected to the outside of the two mounting rods 402 and are used to monitor the position of the corresponding hooks 416 in the axial direction of the mounting rod 402. A cylinder 421 is fixedly connected to one end of the mounting frame 401. A linkage push frame 422 is fixedly connected to the movable end of the cylinder 421. The linkage push frame 422 is used to synchronously push the hooks 416 on the two mounting rods 402 to reset.

[0042] When the capillary tube deflects its attitude before entering the straightening assembly 5, if only a single-point contact or fixed guide structure is used, it is difficult to convert the multi-directional deflection of the deflection cylinder 413 into a displacement signal that is easy to detect, and it is also not conducive to unified reset after detection. In this embodiment, by setting up a universal guide detection structure and converting the attitude deflection of the deflection cylinder 413 into the displacement of the hook 416 along the direction of the mounting rod 402, the spatial sway or torsional accumulation before the capillary enters the straightening area can be detected in a more stable displacement form; at the same time, the linkage push frame 422 is used to reset the hook 416, which is beneficial to restore the detection benchmark after one detection is completed, so that the subsequent pull-back verification or re-detection process maintains the same initial state.

[0043] As the capillary moves from the feeding side to the straightening side, it passes through multiple deflecting cylinders 413 in sequence. The deflecting cylinders 413 are installed in the middle of the universal ball 412, which is located in the spherical groove of the mounting base 411. Therefore, the deflecting cylinders 413 can deflect in multiple directions as the capillary changes its posture. Under normal conveying conditions, the capillary passes through the deflecting cylinders 413 roughly along the predetermined conveying direction. The deflecting cylinders 413 only produce small posture changes within the allowable range. The position of the hook 416 on the mounting rod 402 changes little, and the displacement sensor 417 does not output a deflection over-limit signal.

[0044] When there is spiral sway or torsion accumulation on the unwinding side of the capillary tube, the capillary tube exerts a lateral force on the deflecting cylinder 413, causing the deflecting cylinder 413 to deflect relative to the mounting base 411. After the deflecting cylinder 413 deflects, it pulls the sling 415. The sling 415 passes around the guide wheel 414 and drives the hook 416 to move axially along the mounting rod 402. Since the direction of movement of the hook 416 is limited by the mounting rod 402, the originally complex spatial deflection of the deflecting cylinder 413 can be converted into the linear displacement of the hook 416. The displacement sensor 417 can then determine whether the deflection exceeds the limit at the corresponding position based on the position change of the hook 416.

[0045] The two mounting rods 402 are symmetrically arranged, enabling traction detection on both sides of the deflecting cylinder 413. When the capillary tube deflects in different directions, the deflecting cylinder 413 can drive the corresponding hook 416 to shift, thereby improving the adaptability of the detection component 4 to different deflection directions. After multiple guiding detection units are equidistantly arranged along the axial direction of the mounting rods 402, the capillary tube can form an attitude response at different positions before entering the straightening component 5, making it easy to determine whether abnormal attitudes persist along the conveying direction.

[0046] After the test or verification is completed, the cylinder 421 drives the linkage pusher 422 to move. The linkage pusher 422 simultaneously pushes the hooks 416 on the two mounting rods 402 to move to the initial position. Since the deflecting cylinder 413 is connected to the two sides by slings 415 respectively, and the two slings 415 are connected to the hooks 416 on both sides after passing around the corresponding guide wheel 414, the two hooks 416 can form symmetrical traction on the deflecting cylinder 413 through the two slings 415 during the reset process, so that the deflecting cylinder 413 gradually returns to the correct position from the deflected posture and returns to the initial posture.

[0047] Example 4 like Figure 5 and Figure 9 As shown, based on Embodiment 3, the present invention provides a technical solution: Preferably, the verification pullback assembly 6 includes an electric push rod 601 fixedly connected to the mounting frame 401. The electric push rod 601 is arranged along the capillary conveying direction. The movable end of the electric push rod 601 is fixedly connected to a push plate 602. Two slide rods 603 are slidably passed through the push plate 602. One end of the slide rod 603 near the electric push rod 601 is fixedly connected to a limit head 606, and the other end is fixedly connected to a force plate 604. Buffer springs 605 are sleeved on the outside of the two slide rods 603 and between the force plate 604 and the push plate 602. An electric clamp 607 is fixedly installed on the top of the force plate 604. An arc-shaped hoop 608 is fixedly connected to the side of the two clamps of the electric clamp 607 that are close to each other. A flexible pad 609 is provided on the inner side of the arc-shaped hoop 608.

[0048] When the output of the detection component 4 is in an over-limit state, this state may be affected by factors such as the instantaneous oscillation of the capillary, local attitude disturbance, or the incomplete reset of the detection component 4. If it is directly judged that there is torsion accumulation in the capillary based on this, it is easy for the subsequent torsion relief process to not correspond to the actual state of the capillary. In this embodiment, by setting up the verification pullback component 6, the capillary tube can be clamped and pulled back a preset distance in the direction away from the straightening component 5 after the detection component 4 outputs an over-deflection state. This releases the original deflection effect of the capillary tube on the detection component 4 and provides conditions for the detection component 4 to reset and be detected again. Instead of judging based on a single over-deflection state, a verification process of pullback and re-detection after deflection is formed, which is beneficial to improving the accuracy of judging the torsional accumulation state on the unwinding side. Among them, the buffer spring 605 can absorb the force fluctuation during the clamping and pullback process, and the arc-shaped hoop 608 and the flexible pad 609 can reduce the risk of the capillary tube being pinched or crushed, thereby improving the stability of the verification pullback action.

[0049] When the detection component 4 outputs an over-limit deflection status, the equipment first pauses the continued feeding of the capillary tube to the straightening component 5. The two clamps of the electric clamp 607 move closer to each other, so that the two arc-shaped clamps 608 clamp the capillary tube from both sides. The flexible pad 609 is located between the arc-shaped clamps 608 and the outer wall of the capillary tube, so that the clamping force is distributed to the outer periphery of the capillary tube, reducing local pressure damage to the surface of the capillary tube during the clamping process. After the capillary is clamped, the electric push rod 601 drives the push plate 602 to move in the direction away from the straightening component 5. The push plate 602 drives the electric clamp 607 to move synchronously through the slide rod 603, the buffer spring 605 and the force plate 604, so that the clamped capillary is removed from the position that originally caused the detection component 4 to deflect. As the capillary retracts, the original lateral force on the detection component 4 is gradually released. The deflection cylinder 413 and the hook 416 can return to the initial or near-initial position under the action of the reset structure. The detection component 4 thus re-forms the detection reference. After the preset verification length is completed, the electric clamp 607 releases the capillary, and the capillary returns to a detectable state. If the previous deflection over-limit was caused only by momentary oscillation or local disturbance, the detection component 4 will usually not output the same deflection over-limit state again after the pull-back reset; if the capillary itself still has accumulated torsion on the unwinding side or a spiral sway tendency, the detection component 4 will still generate a deflection over-limit state when the capillary passes through the detection area again.

[0050] The buffer spring 605 set between the force plate 604 and the push plate 602 is mainly used to absorb the force fluctuations generated in the initial stage of pullback or when the capillary is obstructed, so that the displacement change of the electric push rod 601 is not directly rigidly transmitted to the capillary. The slide rod 603 is used to maintain the moving direction of the force plate 604 relative to the push plate 602. The limiting head 606 is used to limit the slide rod 603 from coming out. The above structure enables the verification pullback action to reduce the impact while maintaining clamping stability. However, its main function is still to complete the capillary pullback verification, rather than simple buffer protection.

[0051] Example 5 like Figure 6 and Figure 7 As shown, based on Embodiment 4, the present invention provides a technical solution: Preferably, the straightening assembly 5 includes a base 501 fixedly connected to the frame 1, a bidirectional lead screw 502 rotatably connected inside the base 501, a motor 510 fixedly connected outside the base 501, the output end of the motor 510 extending into the interior of the base 501 and fixedly connected to one end of the bidirectional lead screw 502; sliders 503 are symmetrically threaded to the outside of the bidirectional lead screw 502, a first roller seat 504 and a second roller seat 505 are fixedly connected to the top of the two sliders 503 respectively, a plurality of second straightening rollers 509 are rotatably connected to the top of the second roller seat 505, a plurality of adjusting screw holes are provided on the first roller seat 504, an adjusting screw 506 is threadedly connected inside each adjusting screw hole, one end of the adjusting screw 506 passes through the first roller seat 504 and is rotatably connected to an adjusting block 507, the adjusting block 507 is slidably connected to the first roller seat 504; a first straightening roller 508 is rotatably connected to the top of each adjusting block 507.

[0052] During normal processing, capillaries need to be stably straightened by the straightening roller group. However, if the straightening roller group remains in a pressing state during the torsion release process, it is easy to restrict the release of torsion accumulation in the capillaries, causing the torsion to continue to accumulate at the straightening inlet. In this embodiment, by setting a first roller seat 504 and a second roller seat 505 that can move closer or further apart from each other, the straightening assembly 5 can straighten the capillary tube by two sets of straightening rollers working together during normal processing. When it is necessary to release torsion, the distance between the two sets of straightening rollers can be increased to form a clearance space for the capillary tube to release torsion, reducing the pressure interference of the straightening assembly 5 on the capillary tube torsion release process. The position of the first straightening roller 508 can be adjusted individually by adjusting the screw 506, which is beneficial to adjust the straightening gap according to the capillary tube diameter, degree of curvature or straightening pressure requirements, and improve the adaptability of the straightening assembly 5 in the normal straightening state.

[0053] Under normal straightening conditions, motor 510 drives bidirectional lead screw 502 to rotate. Bidirectional lead screw 502 drives two sliders 503 to move towards each other, so that the first roller seat 504 and the second roller seat 505 are in a position close to each other. When the capillary passes through the straightening assembly 5, the second straightening roller 509 and the first straightening roller 508 are located on both sides of the capillary, forming a pair of straightening effects on the capillary. As the capillary is pulled through, the capillary is continuously guided and straightened between the two sets of straightening rollers, thus entering the subsequent traction cutting process. The first straightening roller 508 is mounted on the adjusting block 507, which is slidably connected to the first roller seat 504. When the corresponding adjusting screw 506 is rotated, the adjusting screw 506 moves axially relative to the first roller seat 504 and drives the adjusting block 507 to slide relative to the first roller seat 504, thereby changing the distance between the corresponding first straightening roller 508 and the second straightening roller 509. Since multiple first straightening rollers 508 are respectively provided with adjusting screws 506, the straightening gap at each position can be adjusted separately, so that the straightening assembly 5 can form different straightening pressure according to the actual bending state of the capillary or processing requirements. When the detection and verification results show that there is an accumulation of torsion on the unwinding side of the capillary, the straightening component 5 switches to the torsion relief and avoidance state. At this time, the motor 510 drives the bidirectional lead screw 502 to rotate in the reverse direction, and the two sliders 503 drive the first roller seat 504 and the second roller seat 505 to move away from each other. The distance between the second straightening roller 509 and the first straightening roller 508 increases accordingly. The capillary is no longer continuously pressed by the two sets of straightening rollers. The straightening component 5 forms an avoidance space on the capillary conveying path, so that the torsion relief component 3 can perform torsion relief processing on the capillary under lower straightening constraint conditions. After the torque release is completed, the motor 510 drives the bidirectional lead screw 502 again, causing the first roller holder 504 and the second roller holder 505 to return to the straightening position. Since the first roller holder 504 and the second roller holder 505 are driven by the same bidirectional lead screw 502, the two sets of straightening rollers can approach or move away in a relatively synchronous manner, which helps to maintain the stability of the straightening center position and reduces the possibility of capillary conveying path deviation caused by unilateral opening and closing. This structure allows the straightening assembly 5 to meet the requirements of normal straightening processing while providing necessary avoidance conditions during the torque release stage.

[0054] like Figure 9 As shown, preferably, the flexible pad 609 has a plurality of flexible ribs 610 formed on the side near the capillary tube. The flexible ribs 610 extend circumferentially along the capillary tube, and the plurality of flexible ribs 610 are arranged at intervals along the axial direction of the capillary tube. A relief groove is formed between two adjacent flexible ribs 610.

[0055] When verifying the pullback, the electric clamp 607 needs to clamp the capillary and drive it to retract. If the contact surface between the flexible pad 609 and the capillary is too smooth, it is easy for relative slippage to occur during the pullback process. If the clamping force is simply increased, it is easy to cause local indentation or deformation of the capillary. In this embodiment, by providing flexible ribs 610 extending circumferentially along the capillary and spaced apart axially along the capillary on the flexible pad 609, the flexible pad 609 can form multiple circumferential flexible contacts when clamping the capillary, improving the axial anti-slip capability during the verification pull-back process; at the same time, an arc-shaped relief groove is formed between adjacent flexible ribs 610, so that the outer wall of the capillary has a local deformation relief space when clamped, which helps to reduce the risk of the capillary being pinched or crushed while ensuring the stability of the pull-back clamping.

[0056] During the verification pullback process, the electric clamp 607 drives the two arc-shaped clamps 608 to move closer to each other. The flexible pad 609 is pressed against the outer wall of the capillary tube along with the arc-shaped clamps 608. Therefore, it is not easy for the flexible pad 609 to shift relative to the arc-shaped clamps 608 during clamping, and it can maintain a relatively stable contact position with the outer circumference of the capillary tube. The flexible pad 609 is provided with multiple flexible ribs 610 on the side near the capillary tube. Each flexible rib 610 extends circumferentially along the capillary tube and is arranged at intervals along the axial direction of the capillary tube. After the capillary tube is clamped, the multiple flexible ribs 610 contact the outer wall of the capillary tube respectively, which is equivalent to forming multiple flexible anti-slip contact parts in the axial direction of the capillary tube. When the electric push rod 601 drives the capillary tube to pull back, the flexible ribs 610 can prevent the capillary tube from sliding relative to the flexible pad 609 in the axial direction, so that the verification pullback distance is closer to the actual pullback distance of the electric push rod 601, thereby improving the reliability of the pullback verification action.

[0057] like Figure 8 As shown, preferably, the universal ball 412 is configured as a hollow spherical shell structure, the deflector cylinder 413 is configured as a thin-walled cylinder structure, and both ends of the deflector cylinder 413 are formed with flared guide sections.

[0058] In this embodiment, by setting the universal ball 412 as a hollow spherical shell structure and the deflector cylinder 413 as a thin-walled cylindrical structure, the overall mass and moment of inertia of the guiding detection unit can be reduced, making it easier for the deflector cylinder 413 to generate an attitude response when subjected to the lateral action of the capillary. At the same time, the flared guide sections at both ends of the deflector cylinder 413 can reduce the entry interference when the capillary enters or exits the deflector cylinder 413, which is beneficial to improving the response sensitivity and smoothness of the detection component 4 to the attitude change on the unwinding side of the capillary.

[0059] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A long capillary straightening and cutting device, comprising a frame (1) and a straightening assembly (5) and a traction cutting assembly (2) arranged along the capillary conveying direction; characterized in that, Also includes: The detection component (4) is located between the external feeding component and the straightening component (5), and includes at least three sets of guide detection units spaced apart along the capillary conveying direction. Each guide detection unit is allowed to pass through the capillary and can generate attitude deflection under the lateral action of the capillary, and is used to output the deflection over-limit state. The verification pullback assembly (6) is used to pull back the capillary along the direction away from the straightening assembly (5) by a preset verification length after the detection assembly (4) outputs an over-limit deflection state, so as to release the deflection effect of the capillary on the detection assembly (4) and reset the detection assembly (4). The torsion relief component (3) is used to perform a torsion relief action on the capillary. The straightening component (5) can switch between a straightening state and a torque relief and avoidance state. The straightening state is when the straightening component (5) applies a straightening action to the capillary. The torque relief and avoidance state is when the straightening component (5) releases or reduces the straightening constraint on the capillary and forms an avoidance gap for the capillary to release torque. The control component includes a state recognition module, a verification instruction generation module, and a torque release instruction generation module. The state recognition module is used to determine the torsion accumulation state of the capillary based on the deflection over-limit state of the detection component (4) before and after the verification pullback. The verification instruction generation module is used to generate a verification pullback instruction to drive the verification pullback component (6) after the detection component (4) outputs the deflection over-limit state. The torque release instruction generation module is used to generate a straightening avoidance instruction and a torque release start instruction when the state recognition module determines that the capillary has a torsion accumulation state.

2. The long capillary straightening and cutting equipment according to claim 1, characterized in that: The torsion relief assembly (3) includes a first linear module (301), which is arranged along the capillary conveying direction. An mounting arm (302) is fixedly connected to the movable end of the first linear module (301). A sleeve (311) is fixedly connected to the end of the mounting arm (302). A first cover plate (312) and a second cover plate (313) are fixedly connected to both ends of the sleeve (311). A sliding cylinder (317) is slidably connected inside the sleeve (311), and one end of the sliding cylinder (317) is rotatably connected to an elastic... Conical head (314); the elastic conical head (314) is provided with a plurality of slits (316) spaced apart in the circumferential direction, the elastic conical head (314) is divided by the plurality of slits (316) to form a plurality of claw heads, and a wedge block (315) is fixedly connected to the outside of each claw head; the wedge block (315) is used in conjunction with the first cover plate (312), the first cover plate (312) has a wedge pressing surface for use in conjunction with the wedge block (315), and a return spring (318) is provided between the slide cylinder (317) and the second cover plate (313).

3. The long capillary straightening and cutting equipment according to claim 2, characterized in that: The elastic cone (314) is fixedly connected to a plurality of first locking teeth (321) on the side near the slide cylinder (317). The first locking teeth (321) are arranged at equal intervals along the circumference of the elastic cone (314). The sleeve (311) is fixedly connected to a plurality of second locking teeth (322) that cooperate with the first locking teeth (321). The first locking teeth (321) and the second locking teeth (322) mesh when the elastic cone (314) closes to restrict the rotation of the elastic cone (314) relative to the sleeve (311).

4. The long capillary straightening and cutting equipment according to claim 3, characterized in that: The detection component (4) includes a second linear module (403), the movable end of which is fixedly connected to a mounting bracket (401). Two symmetrically arranged mounting rods (402) are fixedly connected to the inner side of the mounting bracket (401). The axial direction of the mounting rods (402) is consistent with the capillary conveying direction. A plurality of guiding detection units are equidistantly arranged along the axial direction of the mounting rods (402), and each guiding detection unit includes a mounting seat (411) fixedly connected between two mounting rods (402). A spherical groove is opened inside the mounting seat (411), and a universal ball (412) is arranged inside the spherical groove. A deflector cylinder (413) is passed through the center of the universal ball (412). Each group of guiding detection units is correspondingly provided with two hooks (416), two guide wheels (414), and two displacement sensors (416). 17) The two hooks (416) are slidably connected to the outside of the two mounting rods (402), the two guide wheels (414) are fixedly connected to the two mounting rods (402), the two sides of the deflection cylinder (413) are respectively connected to the slings (415), the two slings (415) pass around the guide wheels (414) on the corresponding side and are connected to the hooks (416) on the corresponding side, the two displacement sensors (417) are respectively fixedly connected to the outside of the two mounting rods (402) and are used to monitor the position of the corresponding hooks (416) in the axial direction of the mounting rods (402); one end of the mounting frame (401) is fixedly connected to the cylinder (421), the movable end of the cylinder (421) is fixedly connected to the linkage push frame (422), and the linkage push frame (422) is used to synchronously push the hooks (416) on the two mounting rods (402) to reset.

5. The long capillary straightening and cutting equipment according to claim 4, characterized in that: The verification pullback assembly (6) includes an electric push rod (601) fixedly connected to the mounting bracket (401). The electric push rod (601) is arranged along the capillary conveying direction. A push plate (602) is fixedly connected to the movable end of the electric push rod (601). Two slide rods (603) are slidably passed through the push plate (602). A limit head (606) is fixedly connected to one end of the slide rod (603) near the electric push rod (601), and a force plate (604) is fixedly connected between the other ends. A buffer spring (605) is sleeved on the outside of the two slide rods (603) and between the force plate (604) and the push plate (602). An electric clamp (607) is fixedly installed on the top of the force plate (604). An arc-shaped hoop (608) is fixedly connected to the side of the two clamps of the electric clamp (607) that are close to each other. A flexible pad (609) is provided on the inner side of the arc-shaped hoop (608).

6. The long capillary straightening and cutting equipment according to claim 5, characterized in that: The straightening assembly (5) includes a base (501) fixedly connected to the frame (1), a bidirectional lead screw (502) rotatably connected inside the base (501), and a motor (510) fixedly connected outside the base (501). The output end of the motor (510) extends into the base (501) and is fixedly connected to one end of the bidirectional lead screw (502). Slider blocks (503) are symmetrically threaded to the outside of the bidirectional lead screw (502), and first roller seats (503) are fixedly connected to the tops of the two sliders (503) respectively. 4) A second roller seat (505), the top of the second roller seat (505) is rotatably connected to a plurality of second straightening rollers (509), the first roller seat (504) is provided with a plurality of adjusting screw holes, the adjusting screw holes are all threadedly connected to adjusting screws (506), one end of the adjusting screw (506) passes through the first roller seat (504) and is rotatably connected to an adjusting block (507), the adjusting block (507) is slidably connected to the first roller seat (504); the top of the adjusting block (507) is rotatably connected to a first straightening roller (508).

7. The long capillary straightening and cutting equipment according to claim 5, characterized in that: The flexible pad (609) has a plurality of flexible ribs (610) formed on the side near the capillary tube. The flexible ribs (610) extend circumferentially along the capillary tube and are arranged at intervals along the axial direction of the capillary tube. A clearance groove is formed between two adjacent flexible ribs (610).

8. The long capillary straightening and cutting equipment according to claim 4, characterized in that: The universal ball (412) is configured as a hollow spherical shell structure, the deflector (413) is configured as a thin-walled cylindrical structure, and both ends of the deflector (413) are formed with flared guide sections.

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