Self-adaptive wrapping type drawing mechanism suitable for processing oxygen-free copper pipe

Abstract

The invention discloses a self-adaptive wrapping type drawing mechanism suitable for oxygen-free copper pipe machining, and belongs to the technical field of oxygen-free copper pipe machining. The drawing device comprises a drawing base, a pipe package conveying mechanism is embedded in one end of the drawing base, and a lubricating oil adaptation mechanism is embedded in the other end of the drawing base; the drawing mechanism assembly can be exchanged according to the size of the copper pipe, and precise adaptation and efficient drawing are achieved; the lubricating oil adaptive mechanism enables lubricating oil to be evenly smeared on the surface of the copper pipe through a rotatable flexible oil wiping ring, the lubricating effect is improved, and the drawing resistance is reduced; the oil scraping and slag discharging mechanism can adjust the position of a scraping plate to scrape impurities and homogenize lubricating oil, and secondary cleaning and lubricating repair can be carried out through air and oil injection; the oil return groove filters and recovers lubricating oil, resource reutilization is achieved, and cost is reduced; the pipe bag conveying mechanism removes pipe wall vibration through flexible balls, the drawing stability is guaranteed, and the product quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of oxygen-free copper tube processing, in particular to an adaptive wrapping drawing mechanism suitable for oxygen-free copper tube processing. Background Art

[0002] In the processing of oxygen-free copper tubes, drawing process is a common method used to draw copper tubes into specific sizes and shapes to meet the needs of different application fields. Traditional drawing mechanisms have some limitations when drawing oxygen-free copper tubes;

[0003] During the drawing process, the copper tube surface is prone to generate large friction with the mold, which will not only cause scratches, wear and other defects on the copper tube surface, affecting the appearance quality of the copper tube, but also may reduce the corrosion resistance and service life of the copper tube; oxygen-free copper tubes will be affected by many factors during the drawing process, such as material unevenness, fluctuations in drawing speed, wear of the mold, etc., and traditional drawing mechanisms are difficult to accurately control the dimensional accuracy of copper tubes; for some application scenarios with high dimensional accuracy requirements, such as aerospace, electronic information and other fields, oxygen-free copper tubes produced by traditional drawing mechanisms are often difficult to meet the requirements;

[0004] The hydraulic servo system is used to drive the drawing head, and the pulling speed is controlled by the PID algorithm. It is equipped with a pressure feedback loop. The response delay of the hydraulic system causes speed fluctuations, and the tube wall vibrates during high-speed drawing (>15m / min).

[0005] In combination with the above content, it should be explained that: Chinese patent application number CN2025102146947 discloses a drawing device for processing seamless internal threaded copper tubes, which can rotate the annular wiping sponge through the lubrication mechanism, and evenly apply the lubricating liquid to the outer surface of the seamless internal threaded copper tube, avoiding gaps with small spraying amounts, reducing friction during the drawing process, and reducing wear on the drawing die and the seamless internal threaded copper tube. In fact, the lubricant is only sprayed on a single fixed area, and the high temperature generated by the friction between the steel tube and the die reduces the lubricant properties. At the same time, some debris is produced and adhered to the lubricant, causing surface damage to the subsequent steel tube stretching.

[0006] In view of the above-mentioned technical defects, a solution is now proposed. Summary of the invention

[0007] The object of the present invention is to provide an adaptive wrapping drawing mechanism suitable for processing oxygen-free copper tubes to solve the problems raised.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an adaptive wrapping drawing mechanism for oxygen-free copper tube processing, comprising a drawing base, a tube package conveying mechanism is set in a sleeve at one end of the drawing base, an oiling adapter mechanism is set in a sleeve at the other end of the drawing base, a limited sleeve frame is set between the tube package conveying mechanism and the oiling adapter mechanism, and a drawing die seat is sleeved at the top center of the limited sleeve frame;

[0009] The bottom of the tube package conveying mechanism is provided with a lifting arc plate that is connected to the drawing base, and the upper part of the lifting arc plate is provided with a side supporting arc plate and a side pressing arc plate, and the inner walls of the lifting arc plate, the side supporting arc plate and the side pressing arc plate are all provided with flexible balls;

[0010] An inner module facing the oil lubrication adapter mechanism is arranged inside the drawing die seat, and an oil scraping and slag removal mechanism is arranged at one end of the inner module facing the oil lubrication adapter mechanism, and the oil scraping and slag removal mechanism includes an embedded ring and a slag removal ring, and a plurality of scrapers are arranged inside the embedded ring; the oil lubrication adapter mechanism includes a lower ring sleeve and an upper ring sleeve, and a plurality of inner guide rails and flexible oil wiping rings are arranged on the inner wall of the upper ring sleeve.

[0011] Furthermore, a drawing bracket is arranged at the bottom center of the groove at one end of the drawing base, suction grooves recessed on the bottom wall of the drawing base are symmetrically arranged on both sides of the drawing bracket, drawing guide grooves recessed on the inner side wall of the drawing base are arranged above both sides of the drawing bracket, and side sliding grooves are obliquely arranged above the drawing guide grooves.

[0012] Furthermore, an adjusting inner frame which cooperates with the lower ring sleeve is provided on the bottom wall of the groove at the other end of the drawing base, and the bottom recesses on both sides of the adjusting inner frame are provided with oil return grooves embedded in the bottom wall of the drawing base, and upper guide rails recessed in the top of the drawing base are provided above both sides of the adjusting inner frame, and a filter element and a slag discharge groove close to the oil scraping and slag discharge mechanism are provided on the top of one end of the oil return groove.

[0013] Furthermore, a lifting slide is provided at the bottom of the lifting arc plate, and lifting cylinders connected to the bottom of the lifting arc plate are symmetrically arranged on both sides of the lifting slide. Combined side frames are provided on the outer walls of the side supporting arc plates and the side pressure arc plates. The combined side frames are composed of a traction slide and a distance adjusting cylinder. The lifting arc plate, the side supporting arc plate and the side pressure arc plate are spliced ​​to form an annular structure.

[0014] Furthermore, anti-slip metal sleeves that are clamped with the inner wall of the drawing base are symmetrically arranged on both sides of the bottom of the limiting sleeve, and side blocks that are sleeved on the inside of the limiting sleeve frame are symmetrically arranged on both sides of the top of the drawing die seat. An anti-slip metal frame that abuts against the inner module is arranged at the bottom of one end of the drawing die seat, and an embedding groove that is sleeved with the embedding ring is recessed on the surface of one end of the inner module facing the oil lubrication adapter mechanism.

[0015] Furthermore, the lower ring sleeve is composed of a semicircular frame and a Y-shaped frame, and the bottom of both sides of the Y-shaped frame are symmetrically penetrated by ring adjustment cylinders connected to the semicircular frame. Several groups of inner guide rails are symmetrically embedded in the center of the inner walls of the lower ring sleeve and the upper ring sleeve, and the inner walls of the inner guide rails are clamped with the flexible oil wiping ring. A driving motor is arranged on the top outer wall of the upper ring sleeve, and side moving frames slidingly sleeved on the inner wall of the drawing base are symmetrically arranged on both sides of the upper ring sleeve. A rotating frame drivingly connected to the output end of the driving motor is slidingly sleeved on the inner wall of the inner guide rail. The rotating frames are spliced ​​to form a circular ring for driving the flexible oil wiping ring to rotate, and several groups of oil inlet valves are arranged on the outer wall of the same end of the lower ring sleeve and the upper ring sleeve.

[0016] Furthermore, movable frames are symmetrically arranged on both sides of the oil scraping and slag discharging mechanism, inner rotating frames are symmetrically arranged on the inner walls of the embedded ring and the slag discharging ring, a rotating motor is arranged on the top of the embedded ring with a transmission connection to the inner rotating frame, a combined guide rod is hinged on the surface of the inner rotating frame, and the combined guide rod is composed of a micro cylinder, a plurality of groups of sliding rods and a metal hinge block, a limiting ring is arranged on the inner ring of the inner rotating frame with a sleeve connected to the combined guide rod, a scraper is hinged on the bottom of the combined guide rod, the movable frame is cooperatively connected to the upper guide rail, the metal hinge block is sleeved on the inner rotating frame, and a metal bolt rod is arranged on the side wall of the limiting ring with a sliding sleeve connected to the surface of the micro cylinder.

[0017] Furthermore, an outer rotating frame is arranged on the outer wall of the slag discharge ring away from the embedded ring, and a plurality of combined spray frames are arranged in a circular array on the inner wall of the outer rotating frame. The surface of the combined spray frame is provided with a plurality of staggered air jets and oil jets.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention ensures adaptability by replacing the drawing mechanism components according to the size and model of the oxygen-free copper tube. The conveying equipment is transported smoothly, one end of the oxygen-free copper tube is prefabricated and compressed, so that the tube head passes through the inner module, the drawing fixture clamps, and the drawing hydraulic component pulls the copper tube through the inner module to achieve efficient and accurate drawing processing. The oiling adapter mechanism can flexibly adjust the position, and the upper ring sleeve and the lower ring sleeve are connected to form a circular ring to wrap the copper tube through the ring adjustment cylinder, the inner push cylinder, etc. The flexible oil rubbing ring contacts the outer wall of the copper tube, and the external oil supply equipment provides lubricating oil, which is dispersed through the branch pipe, soaks the oil rubbing ring and transfers it to the surface of the copper tube; the driving motor drives the rotating ring and the oil rubbing ring to rotate, so that the oil rubbing ring fits more closely with the surface of the copper tube, improves the lubrication effect, and reduces the pulling resistance.

[0020] 2. The present invention uses an oil scraping and slag removal mechanism to adjust the position of the scraper according to the size of the copper tube, and reciprocate scraping to fit the surface of the copper tube to clean impurities and deal with unevenly smeared lubricating oil. The movable frame drives the mechanism to rotate reciprocatingly, and cooperates with the scraper to scrape evenly; at the same time, the upper guide rail drives the movable frame to move horizontally, accelerates the sliding friction of the scraper, and promotes the displacement of impurities and oil. When resetting, the combined spray frame rotates, and the air jet and oil spray port are used to pneumatically clean the copper tube surface, perform secondary cleaning, and repair the lubricating coating to ensure the surface quality of the copper tube.

[0021] 3. The present invention is that the lubricating oil and impurities generated by the oil lubrication adapter mechanism and the oil scraping and slag discharge mechanism drip into the oil return tank, the filter element in the oil return tank filters the impurities, the impurities are discharged centrally through the slag discharge tank, and the recovered lubricating oil is extracted by a pump and reused, thereby realizing effective resource recovery and reducing production costs; the tube package conveying mechanism uses the lifting cylinder and the distance adjusting cylinder to make the lifting arc plate, the side supporting arc plate and the side pressure arc plate move closer to the center, and the flexible ball contacts and wraps the surface of the copper tube at multiple points, and uses the contact pressure to remove the tube wall vibration caused by hydraulic drawing of the copper tube, thereby ensuring the stability of the copper tube during the drawing process and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the top view of the drawing base of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the tube package conveying mechanism of the present invention;

[0026] Figure 4 It is a schematic diagram of the internal structure of the drawing base of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the limiting sleeve and the drawing die seat of the present invention;

[0028] Figure 6 It is a three-dimensional structural schematic diagram of the oil scraping and slag discharging mechanism of the present invention;

[0029] Figure 7 It is a schematic diagram of the explosion structure of the oil scraping and slag discharging mechanism of the present invention;

[0030] Figure 8It is a structural schematic diagram of the oil lubrication adapter mechanism of the present invention.

[0031] Figure numerals: 1, drawing base; 101, side slide groove; 102, drawing guide groove; 103, drawing bracket; 104, suction groove; 105, upper guide rail; 106, adjusting inner frame; 107, oil return groove; 2, limit sleeve; 3, drawing die seat; 301, inner module; 302, embedded groove; 4, tube package conveying mechanism; 401, lifting arc plate; 402, side supporting arc plate; 403, side pressure arc plate; 404, lifting slide; 405, lifting cylinder; 406, flexible ball; 407, combined side Frame 5, oil lubrication adapter mechanism; 501, lower ring sleeve; 502, ring adjustment cylinder; 503, upper ring sleeve; 504, drive motor; 505, inner guide rail; 506, flexible oil wiping ring; 507, side moving frame; 6, oil scraping and slag discharge mechanism; 601, embedded ring; 602, slag discharge ring; 603, moving frame; 604, scraper; 605, rotating motor; 606, outer rotating frame; 607, combined spray frame; 608, inner rotating frame; 609, combined guide rod; 610, metal hinge block; 611, limit ring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1: Please refer to Figure 1 - Figure 8 As shown, this embodiment is an adaptive wrapping drawing mechanism suitable for oxygen-free copper tube processing, including a drawing base 1, a tube package conveying mechanism 4 is embedded in one end of the drawing base 1, and an oiling adapter mechanism 5 is embedded in the other end of the drawing base 1. A limiting sleeve 2 is arranged between the tube package conveying mechanism 4 and the oiling adapter mechanism 5, and a drawing die seat 3 is sleeved at the top center of the limiting sleeve 2.

[0034] According to the size and model of the oxygen-free copper tube to be drawn, the relevant components in the appropriate drawing mechanism are replaced, and the oxygen-free copper tube conveying equipment is used to smoothly transport it to the drawing mechanism. One end of the oxygen-free copper tube is prefabricated and compressed in advance so that the tube head passes through the inner module 301 and extends to the inside of the tube package conveying mechanism 4. After it is clamped by the drawing clamp, after waiting for the relevant structure on the drawing base 1 to be adjusted, the drawing hydraulic component pulls the oxygen-free copper tube through the inner module 301 through the drawing clamp to realize the drawing process of the oxygen-free copper tube by the inner mold.

[0035] An inner module 301 facing the oil lubrication adapter mechanism 5 is arranged inside the drawing die seat 3, and an oil scraping and slag removal mechanism 6 is arranged at one end of the inner module 301 facing the oil lubrication adapter mechanism 5, and the oil scraping and slag removal mechanism 6 includes an embedded ring 601 and a slag removal ring 602, and a plurality of scrapers 604 are arranged inside the embedded ring 601; the oil lubrication adapter mechanism 5 includes a lower ring sleeve 501 and an upper ring sleeve 503, and a plurality of inner guide rails 505 and a flexible oil wiping ring 506 are arranged on the inner wall of the upper ring sleeve 503.

[0036] A drawing bracket 103 is arranged at the bottom center of the groove at one end of the drawing base 1, and suction grooves 104 recessed on the bottom wall of the drawing base 1 are symmetrically arranged on both sides of the drawing bracket 103, and drawing guide grooves 102 recessed on the inner side wall of the drawing base 1 are arranged above both sides of the drawing bracket 103, and side sliding grooves 101 are obliquely arranged above the drawing guide grooves 102.

[0037] An adjusting inner frame 106 which cooperates with the lower ring sleeve 501 is arranged on the bottom wall of the groove at the other end of the drawing base 1, and oil return grooves 107 embedded in the bottom wall of the drawing base 1 are arranged on the bottom of the adjusting inner frame 106 on both sides, and upper guide rails 105 recessed in the top of the drawing base 1 are arranged above the two sides of the adjusting inner frame 106, and a filter element and a slag discharge groove close to the oil scraping and slag discharge mechanism 6 are arranged on the top of one end of the oil return groove 107.

[0038] The lubricating oil and impurities generated by the operation of the oil lubrication adapter mechanism and the oil scraping and deslagging mechanism 6 drip toward the oil return groove 107. The filter element arranged inside the oil return groove 107 filters the impurities in the lubricating oil. The intercepted impurities are accumulated and discharged through the deslagging groove, and the concentrated recovered lubricating oil is extracted by a pump for reuse.

[0039] Anti-slip metal sleeves that are clamped with the inner wall of the drawing base 1 are symmetrically arranged on both sides of the bottom of the limiting sleeve 2, and side blocks that are sleeved on the inside of the limiting sleeve 2 are symmetrically arranged on both sides of the top of the drawing die seat 3. An anti-slip metal frame that abuts against the inner module 301 is arranged at the bottom of one end of the drawing die seat 3, and an embedding groove 302 that is sleeved with the embedding ring 601 is recessed on the surface of one end of the inner module 301 facing the oil adapter mechanism 5.

[0040] The lower ring sleeve 501 is composed of a semicircular frame and a Y-shaped frame. The bottom of both sides of the Y-shaped frame are symmetrically penetrated with ring adjustment cylinders 502 connected to the semicircular frame. Several groups of inner guide rails 505 are symmetrically embedded in the center of the inner walls of the lower ring sleeve 501 and the upper ring sleeve 503. The inner walls of the inner guide rails 505 are clamped with the flexible oil rubbing ring 506. A driving motor 504 is arranged on the outer wall of the top of the upper ring sleeve 503. Side moving frames 507 slidingly sleeved on the inner wall of the drawing base 1 are symmetrically arranged on both sides of the upper ring sleeve 503. A rotating frame drivingly connected to the output end of the driving motor 504 is slidingly sleeved on the inner wall of the inner guide rail 505. The rotating frames are spliced ​​to form a ring for driving the flexible oil rubbing ring 506 to rotate. Several groups of oil inlet valves are arranged on the outer wall of the same end of the lower ring sleeve 501 and the upper ring sleeve 503.

[0041] The oiling adapter mechanism adjusts its position on the drawing base 1 by adjusting the inner frame 106 and the upper guide rail 105 to cooperate with each other. The ring adjusting cylinder 502 drives the semicircular frame to slide up, and an inner push cylinder connected and cooperated with the upper ring sleeve 503503 is arranged on the inner wall of the side moving frame 603. The inner push cylinder drives the upper ring sleeve 503 to slide down until the lower ring sleeve 501 is docked with the upper ring sleeve 503 to form a circular ring structure, and the oxygen-free copper tube is framed in the inner ring. In this state, the inner wall of the flexible oiling ring 506 contacts the outer wall of the oxygen-free copper tube, and the external oil supply equipment is connected to several groups of oil inlet valves through pipe fittings to provide lubricating oil to the upper ring sleeve 503 and the lower ring sleeve 501. Several groups of branch pipes are laid inside the upper ring sleeve 503 and the lower ring sleeve 501 to guide the dispersed flow of lubricating oil and overflow along the holes opened on the surface of the branch pipes until the surface of the flexible oiling ring 506 is soaked and transferred to the contacted surface of the oxygen-free copper tube.

[0042] The output end of the driving motor 504 is provided with a coupling and a gear which are transmission-connected to the rotating frame, driving the circular rotating ring to rotate along the inner wall of the spliced ​​inner guide rail 505. During the rotation of the rotating ring, the spliced ​​flexible oil-rubbing ring 506 is driven to rotate synchronously. Accordingly, along with the continuous transportation of the oxygen-free copper tube, the flexible oil-rubbing ring 506 rotates at a uniform speed and seeps oil. Affected by the flexible material of the flexible oil-rubbing ring 506 body, the flexible oil-rubbing ring 506 is brought into closer contact with the surface of the oxygen-free copper tube.

[0043] The oil scraping and slag discharging mechanism 6 is symmetrically provided with movable frames 603 on both sides, and the inner walls of the embedded ring 601 and the slag discharging ring 602 are symmetrically provided with inner rotating frames 608. A rotating motor 605 which is transmission-connected to the inner rotating frame 608 is provided on the top of the embedded ring 601. A combined guide rod 609 is hinged on the surface of the inner rotating frame 608. The combined guide rod 609 is composed of a micro-cylinder, a plurality of groups of sliding rods and a metal hinge block 610. A limiting ring 611 which is sleeved with the combined guide rod 609 is provided on the inner circle of the inner rotating frame 608. A scraper 604 is hinged on the bottom of the combined guide rod 609. The movable frame 603 is cooperatively connected with the upper guide rail 105. The metal hinge block 610 is sleeved with the inner rotating frame 608. A metal bolt rod which is slidingly sleeved with the surface of the micro-cylinder is provided on the side wall of the limiting ring 611.

[0044] After being oiled, the oxygen-free copper tube is close to the oil scraping and slag removal mechanism 6. The initial state of the oil scraping and slag removal mechanism 6 is embedded in the embedding groove 302. After the pulling mechanism is started, it drives the inner rotating frame 608 through the rotating motor 605. The output end of the rotating motor 605 is meshed with the inner rotating frame 608 through the coupling and the gear. The inner rotating frame 608 is driven to rotate, and the inner rotating frame 608 drives the top of the micro cylinder through the metal hinge block 610. The surface of the micro cylinder is sleeved with the metal bolt rod, and the sleeve area of ​​the surface of the micro cylinder and the metal bolt rod is provided with an arc groove. During the period when the micro cylinder is pulled and moved by the inner rotating frame 608, the micro cylinder is sleeved with the metal bolt rod to adjust the angle through the arc groove.

[0045] According to the size requirements of the oxygen-free copper tube, the micro-cylinder drives several groups of slide rods to expand, so that the scraper 604 at the bottom of the slide rod is displaced until it fits on the surface of the oxygen-free copper tube. As the oxygen-free copper tube is continuously pulled and traction-slid, the scraper 604 performs a reciprocating scraping treatment on the surface of the oxygen-free copper tube, so that the residual impurities on the surface are scraped and cleaned, and the unevenly applied lubricating oil is treated for the second time. The rotary cylinder connected to the embedded ring 601 is provided on the inner wall of the movable frame 603 and started, which drives the overall oil scraping and slag removal mechanism 6 to reciprocate along a certain angle, and cooperates with several groups of scrapers 604 to evenly scrape the surface of the oxygen-free copper tube.

[0046] An outer rotating frame 606 is arranged on the outer wall of the slag discharge ring 602 away from the embedded ring 601, and a plurality of combined spray frames 607 are arranged in a circular array on the inner wall of the outer rotating frame 606. The surface of the combined spray frame 607 is provided with a plurality of staggered air jets and oil jets.

[0047] While the scraper 604 is in contact with the oxygen-free copper tube, the upper guide rail 105 is started at a fixed time, and the upper guide rail 105 drives the movable frame 603 to move axially and close to the oiling adapter mechanism, so that the scraper 604 accelerates the sliding friction along the surface of the oxygen-free copper tube, and pushes the impurities and oil intercepted by the previous contact and displacement together. After the upper guide rail 105 moves to the maximum limit, the upper guide rail 105 is reset again, so that the impurities and oil are retained on the surface of the oxygen-free copper tube and away from the inner mold.

[0048] During the resetting of the scraping and slag removal mechanism 6, the rotating motor 605 is connected to the outer rotating frame 606 through a worm gear and a magnetic coupling, and the outer rotating frame 606 drives a plurality of combined spray frames 607 to rotate. An air slip ring / liquid slip ring is arranged between the combined spray frame 607 and the outer rotating frame 606. The air slip ring / liquid slip ring is connected to the external air supply equipment / liquid supply equipment pipeline through a pipe fitting, but is not limited to this. The air jet and the oil jet respectively guide the air flow and the oil to be sprayed on the surface of the oxygen-free copper tube, so that the impurities retained on the surface of the oxygen-free copper tube are first pneumatically cleaned, and then cleaned again by the sprayed oil, and the residual oil is used to repair the lubricating coating on the cleaned area of ​​the surface of the oxygen-free copper tube.

[0049] Embodiment 2: This embodiment is an adaptive wrapping drawing mechanism suitable for oxygen-free copper tube processing, including a tube package conveying mechanism 4 with a lifting arc plate 401 arranged at the bottom thereof, which is connected to the drawing base 1, and a side arc supporting plate 402 and a side arc pressure plate 403 are arranged above the lifting arc plate 401, and flexible balls 406 are arranged on the inner walls of the lifting arc plate 401, the side arc supporting plate 402 and the side arc pressure plate 403.

[0050] A lifting slide 404 is arranged at the bottom of the lifting arc plate 401, and lifting cylinders 405 connected to the bottom of the lifting arc plate 401 are symmetrically arranged on both sides of the lifting slide 404. Combined side frames 407 are arranged on the outer walls of the side supporting arc plates 402 and the side pressure arc plates 403. The combined side frames 407 are composed of a traction slide plate and a distance adjusting cylinder. The lifting arc plate 401, the side supporting arc plates 402 and the side pressure arc plates 403 are spliced ​​to form an annular structure.

[0051] The oxygen-free copper tube is clamped and dragged by the drawing fixture and contacts the inner mold. Affected by the size of the internal cavity of the inner mold, the oxygen-free copper tube is deformed under pressure. After deformation, the oxygen-free copper tube enters the tube package conveying mechanism 4. The tube package conveying mechanism 4, through the coordinated cooperation of the lifting cylinder 405 and several groups of adjustable cylinders, simultaneously moves the lifting arc plate 401, the side supporting arc plate 402 and the side pressure arc plate 403 to the center until the flexible ball 406 contacts the surface of the oxygen-free copper tube, thereby achieving wrapped multi-point contact with the surface of the oxygen-free copper tube. The contact pressure between several groups of flexible balls 406 and the surface of the oxygen-free copper tube is used to remove the tube wall vibration caused by the dragging of the hydraulic drawing assembly of the oxygen-free copper tube.

[0052] Embodiment 3: This embodiment is an adaptive wrapping drawing mechanism suitable for oxygen-free copper tube processing, including a single control panel arranged on the outside of the drawing base 1, which is connected to the factory production supervision center for communication, and its internal integrated communication connection is connected to the drawing supervision platform, the drawing data acquisition module, the risk data analysis module, and the emergency decision-making and control module. Through real-time data interaction and closed-loop control, intelligent supervision of the oxygen-free copper tube drawing process is realized.

[0053] When the single-hole panel starts the drawing base 1, it generates a supervision instruction and sends it to the drawing data acquisition module. The drawing data acquisition module collects the state parameters of mechanical parts and the physical property data of the copper tube in real time during the drawing process, and provides basic input for the risk data analysis module. The state parameters of mechanical parts and the physical property data of the copper tube are marked as mechanical parameters and copper tube parameters respectively, and the environmental parameters are additionally obtained;

[0054] Among them, the mechanical parameters include the lifting cylinder pressure P 托 , Adjustable cylinder pressure P 调 , driving motor speed N, ring adjustment cylinder displacement L and scraper contact pressure P 刮 ,The data comes from the combined guide rod micro cylinder feedback;

[0055] The copper tube parameters include the drawing speed V, which is collected by the drawing fixture displacement sensor; the tube wall temperature T, which is collected by the infrared sensor; the tube diameter D, which is collected by the laser rangefinder; and the lubricating oil flow Q, which is converted by the oil inlet valve pressure sensor.

[0056] Environmental parameters include the suction tank negative pressure P 抽 Used to monitor the impurity recovery efficiency and oil temperature T of the oil return tank 油 Temperature difference before and after the filter element;

[0057] Acquisition process: The sensor samples in real time at a frequency of 100 Hz, and after signal filtering, it is transmitted to the supervision platform via industrial Ethernet and stored in the time series database;

[0058] The analysis process of the risk data analysis module after receiving the collected data is as follows:

[0059] Pipe wall vibration early warning model:

[0060] Combined with the principle of "flexible ball to remove tremor" in the second embodiment, the tremor index is defined as:

[0061]

[0062] Where ∝ and β indicate that the pressure fluctuation is weighted higher than the velocity fluctuation, ∝ = 0.6, β = 0.4; ΔP 托 It is expressed as the standard deviation of the lifting cylinder pressure fluctuation; ΔV is expressed as the instantaneous change rate of the pulling speed; P 托nom and V nom Expressed as nominal values ​​of pressure and velocity;

[0063] If K>0.3, it is judged as "mild tremor", a mild signal is generated and sent to the emergency decision-making and control module. After receiving the mild signal, the emergency decision-making and control module increases the lifting cylinder pressure P 托 To P 托 ×1.1, by combining the distance adjustment cylinder of the side frame 407 to reduce the distance between the side support arc plates 402, the wrapping force is enhanced;

[0064] If K>0.5, it is judged as "severe tremor", and a severe signal is generated and sent to the emergency decision-making and control module. After receiving the severe signal, the emergency decision-making and control module triggers the pulling speed V to slow down to 0.8V. nom , and at the same time, the movable frame 603 of the oil scraping and slag discharging mechanism 6 is started to move horizontally to enhance the surface uniformity;

[0065] Lubrication failure judgment:

[0066] The effective viscosity of lubricating oil is negatively correlated with temperature. Combined with the problem of "high temperature reduces lubricant properties" in the manuscript, the critical temperature is established:

[0067]

[0068] Among them, T 油初 It is represented by the initial temperature of the lubricating oil, γ is represented by the flow compensation coefficient, and its value is 15℃ / L, Q nom It is represented as a pre-stored threshold retrieved from the pull supervision platform;

[0069] When Q 实 <0.8Q nom , and T 油 >T cr When the lubrication failure occurs, the lubrication failure is determined, and a lubrication abnormality signal is generated and sent to the emergency decision-making and control module. After receiving the lubricating oil abnormality signal, the emergency decision-making and control module increases the lubricating oil flow rate to 1.2Q through the oil inlet valve when the lubrication failure is detected. nom , and drives the flexible oil wiping ring 506 to increase its rotation speed N by 20% to enhance the uniformity of oiling;

[0070] Data-driven intelligent control: Through multi-sensor fusion to collect parameters such as pressure, speed, temperature, etc., based on the vibration index K, lubrication critical temperature T cr The model can assess risks in real time, with a response time of less than 200ms, realizing the transformation from "post-event detection" to "pre-event prevention";

[0071] Closed-loop control and adaptability: The emergency decision module automatically adjusts execution parameters such as cylinder pressure, motor speed, and lubricating oil flow according to the deviation, forming a "collection-analysis-control" closed loop, significantly reducing the cost of manual intervention and improving production stability;

[0072] Efficient use of resources: The oil return tank 107 filter element recovers lubricating oil, and the slag discharge tank centrally processes impurities. Combined with the secondary use of oil in the spray rack, lubricating oil consumption is reduced by 30%, while waste emissions are reduced, which is in line with the concept of green manufacturing.

[0073] Combined with Example 1 and Example 2, the oxygen-free copper tube drawing process has many beneficial effects. The drawing mechanism components can be replaced according to the size of the copper tube to achieve precise adaptation and efficient drawing; the oiling adapter mechanism uses a rotatable flexible oil rubbing ring 506 to evenly apply lubricating oil to the surface of the copper tube, thereby improving the lubrication effect and reducing the drawing resistance; the scraping and slag removal mechanism 6 can adjust the position of the scraper 604 to complete the scraping of impurities and the homogenization of the lubricating oil, and can also perform secondary cleaning and lubrication repair through jet oil injection; the oil return tank 107 filters and recovers the lubricating oil to achieve resource reuse and reduce costs; the tube package conveying mechanism 4 uses a flexible ball 406 to remove the vibration of the tube wall, ensure the drawing stability, and improve product quality.

[0074] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Related accessories include couplings, screws, gears, gaskets and other commonly used mechanical connection components in this field, but are not limited thereto. They are replaced and adapted according to actual use.

[0076] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An adaptive wrapping drawing mechanism for processing oxygen-free copper tubes, comprising a drawing base (1), characterized in that: A tube package conveying mechanism (4) is embedded in one end of the drawing base (1), and an oiling adapter mechanism (5) is embedded in the other end of the drawing base (1). A limiting sleeve (2) is provided between the tube package conveying mechanism (4) and the oiling adapter mechanism (5), and a drawing die seat (3) is sleeved at the top center of the limiting sleeve (2); The bottom of the tube package conveying mechanism (4) is provided with a lifting arc plate (401) which is connected to the drawing base (1), and the upper part of the lifting arc plate (401) is provided with a side supporting arc plate (402) and a side pressing arc plate (403), and the inner walls of the lifting arc plate (401), the side supporting arc plate (402) and the side pressing arc plate (403) are all provided with flexible balls (406); The drawing die seat (3) is provided with an inner module (301) facing the oil lubrication adapter mechanism (5), and an oil scraping and slag removal mechanism (6) is provided at one end of the inner module (301) facing the oil lubrication adapter mechanism (5), and the oil scraping and slag removal mechanism (6) includes an insert ring (601) and a slag removal ring (602), and a plurality of scrapers (604) are provided inside the insert ring (601); the oil lubrication adapter mechanism (5) includes a lower ring sleeve (501) and an upper ring sleeve (503), and a plurality of inner guide rails (505) and a flexible oil scraping ring (506) are provided on the inner wall of the upper ring sleeve (503).

2. The adaptive wrapping drawing mechanism for oxygen-free copper tube processing according to claim 1 is characterized in that: A drawing bracket (103) is arranged at the center of the bottom of the groove at one end of the drawing base (1), and suction grooves (104) recessed on the bottom wall of the drawing base (1) are symmetrically arranged on both sides of the drawing bracket (103), and drawing guide grooves (102) recessed on the inner side wall of the drawing base (1) are arranged above both sides of the drawing bracket (103), and side sliding grooves (101) are obliquely arranged above the drawing guide grooves (102).

3. The adaptive wrapping drawing mechanism for oxygen-free copper tube processing according to claim 2 is characterized in that: An adjusting inner frame (106) which is engaged with the lower ring sleeve (501) is arranged on the bottom wall of the groove at the other end of the drawing base (1), and oil return grooves (107) embedded in the bottom wall of the drawing base (1) are arranged in depressions at the bottom of both sides of the adjusting inner frame (106), and upper guide rails (105) which are recessed in the top of the drawing base (1) are arranged above both sides of the adjusting inner frame (106).

4. The adaptive wrapping drawing mechanism for oxygen-free copper tube processing according to claim 1 is characterized in that: A lifting slide (404) is arranged at the bottom of the lifting arc plate (401), and lifting cylinders (405) connected to the bottom of the lifting arc plate (401) are symmetrically arranged on both sides of the lifting slide (404). Combined side frames (407) are arranged on the outer walls of the side supporting arc plates (402) and the side pressure arc plates (403). The combined side frames (407) are composed of a traction slide plate and a distance adjustment cylinder. The lifting arc plate (401), the side supporting arc plates (402) and the side pressure arc plates (403) are spliced ​​to form an annular structure.

5. The adaptive wrapping drawing mechanism for oxygen-free copper tube processing according to claim 1 is characterized in that: The bottom of the limiting sleeve (2) is symmetrically provided with anti-skid metal sleeves that are clamped with the inner wall of the drawing base (1), and the top of the drawing die seat (3) is symmetrically provided with side blocks that are sleeved inside the limiting sleeve (2). The bottom of one end of the drawing die seat (3) is provided with an anti-slip metal frame that abuts against the inner module (301), and the surface of one end of the inner module (301) facing the oil adapter mechanism (5) is recessed and provided with an embedding groove (302) that is sleeved with the embedding ring (601).

6. The adaptive wrapping drawing mechanism for oxygen-free copper tube processing according to claim 1 is characterized in that: The lower ring sleeve (501) is composed of a semicircular frame and a Y-shaped frame. The bottom of both sides of the Y-shaped frame are symmetrically penetrated by ring adjustment cylinders (502) connected to the semicircular frame. A plurality of groups of inner guide rails (505) are symmetrically embedded in the center of the inner walls of the lower ring sleeve (501) and the upper ring sleeve (503). The inner walls of the inner guide rails (505) are clamped with the flexible oil wiping ring (506). A driving motor (504) is arranged on the outer wall of the top of the upper ring sleeve (503). Side movable frames (507) that are slidably sleeved on the inner wall of the drawing base (1) are symmetrically arranged on both sides of the upper ring sleeve (503).

7. The adaptive wrapping drawing mechanism for oxygen-free copper tube processing according to claim 1 is characterized in that: The oil scraping and slag discharging mechanism (6) is symmetrically provided with movable frames (603) on both sides, and inner rotating frames (608) are symmetrically provided on the inner walls of the embedded ring (601) and the slag discharging ring (602). A rotating motor (605) drivingly connected to the inner rotating frame (608) is provided on the top of the embedded ring (601). A combined guide rod (609) is hingedly connected to the surface of the inner rotating frame (608). The combined guide rod (609) is composed of a micro cylinder, a plurality of groups of sliding rods and a metal hinge block (610). A limiting ring (611) sleeved with the combined guide rod (609) is provided on the inner ring of the inner rotating frame (608), and a scraper (604) is hingedly connected to the bottom of the combined guide rod (609).

8. The adaptive wrapping drawing mechanism for oxygen-free copper tube processing according to claim 7 is characterized in that: An outer rotating frame (606) is arranged on the outer wall of one end of the slag discharge ring (602) away from the embedded ring (601), and a plurality of groups of combined spray frames (607) are arranged in a circular array on the inner wall of the outer rotating frame (606), and a plurality of groups of staggered air jets and oil jets are arranged on the surface of the combined spray frames (607).

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