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

Abstract

The application discloses a self-adaptive wrapping type drawing mechanism suitable for oxygen-free copper pipe processing and belongs to the technical field of oxygen-free copper pipe processing; the self-adaptive wrapping type drawing mechanism comprises a drawing base, a pipe wrapping conveying mechanism is arranged in the one end of the drawing base in a sleeved and embedded mode, and an oil lubricating adapting mechanism is arranged in the other end of the drawing base in a sleeved and embedded mode; the self-adaptive wrapping type drawing mechanism can adjust the drawing mechanism assembly according to the size of the copper pipe, realizes accurate adaptation and efficient drawing, the oil lubricating adapting mechanism can uniformly apply lubricating oil to the surface of the copper pipe through the rotatable flexible oil wiping ring, improves the lubricating effect and reduces the drawing resistance, the oil scraping and residue discharging mechanism can adjust the position of the scraping plate, completes the scraping and removal of impurities and the homogenization of lubricating oil, and can also perform secondary cleaning and lubricating repair through air and oil spraying, the oil recovery groove filters and recovers the lubricating oil, realizes resource recycling and reduces the cost, and the pipe wrapping conveying mechanism removes the pipe wall vibration through flexible balls, guarantees the drawing stability and improves the product quality.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of oxygen-free copper pipe processing, in particular to a self-adaptive wrapping type drawing mechanism suitable for oxygen-free copper pipe processing. BACKGROUND

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

[0003] During the drawing process, the surface of the copper pipe is prone to generate a large friction force with the die, which not only causes scratches, wear and other defects on the surface of the copper pipe, affecting the appearance quality of the copper pipe, but also reduces the corrosion resistance and service life of the copper pipe. Oxygen-free copper pipes are affected by various factors during the drawing process, such as material non-uniformity, drawing speed fluctuations, die wear, etc. Traditional drawing mechanisms are difficult to accurately control the dimensional accuracy of the copper pipe. For some application scenarios with high dimensional accuracy requirements, such as aerospace, electronic information, etc., the oxygen-free copper pipes produced by traditional drawing mechanisms often cannot meet the requirements.

[0004] The drawing head is driven by a hydraulic servo system, the traction speed is controlled by a PID algorithm, a pressure feedback loop is provided, and the hydraulic system responds with a delay, causing speed fluctuations. When drawing at high speed (> 15 m / min), the pipe wall vibrates.

[0005] In combination with the above, it should be noted that the Chinese patent with the application number CN2025102146947 discloses a drawing device for processing seamless internal thread copper pipes. The lubricating mechanism can make the annular wiping sponge rotate and evenly apply lubricating liquid to the outer surface of the seamless internal thread copper pipe, avoiding gaps with low spraying amount, reducing friction during drawing, and reducing wear on the drawing die and the seamless internal thread copper pipe. However, the lubricant is only sprayed in a single fixed area, and the high temperature generated by the friction between the steel pipe and the die reduces the properties of the lubricant, and some debris is adhered to the lubricant, causing surface damage to the subsequent steel pipe stretching.

[0006] In view of the above technical defects, the present solution is proposed. SUMMARY

[0007] The purpose of the present application is to provide a self-adaptive wrapping type drawing mechanism suitable for oxygen-free copper pipe processing to solve the problems.

[0008] In order to achieve the above object, the present application provides the following technical scheme: the adaptive wrapping type drawing mechanism suitable for oxygen-free copper pipe processing, comprising a drawing base, a pipe wrapping conveying mechanism is arranged in the one end of the drawing base, an oil lubricating adapting mechanism is arranged in the other end of the drawing base, a limiting sleeve is arranged between the pipe wrapping conveying mechanism and the oil lubricating adapting mechanism, and a drawing die holder is sleeved at the top center of the limiting sleeve;

[0009] The bottom of the pipe wrapping conveying mechanism is provided with a lifting arc plate matched with the drawing base, the top of the lifting arc plate is provided with a side supporting arc plate and a side pressing arc plate, and flexible balls are arranged on the inner walls of the lifting arc plate, the side supporting arc plate and the side pressing arc plate;

[0010] The inner die module of the drawing die holder is arranged towards the oil lubricating adapting mechanism, a scraping and deslagging mechanism is arranged at one end of the inner die module towards the oil lubricating adapting mechanism, the scraping and deslagging mechanism comprises an embedded ring and a deslagging ring, and a plurality of groups of scraping plates are arranged in the embedded ring; the oil lubricating adapting mechanism comprises a lower ring sleeve and an upper ring sleeve, a plurality of groups of inner guide rails and flexible oil wiping rings are arranged on the inner wall of the upper ring sleeve.

[0011] Further, a drawing bracket is arranged at the center of the groove bottom of the one end of the drawing base, suction grooves recessed in the bottom wall of the drawing base are symmetrically arranged on the two sides of the drawing bracket, drawing guide grooves recessed in the inner side wall of the drawing base are arranged above the two sides of the drawing bracket, and side sliding grooves are arranged above the drawing guide grooves in an inclined manner.

[0012] Further, an adjusting inner frame matched with the lower ring sleeve is arranged on the groove bottom wall of the other end of the drawing base, oil return grooves embedded in the bottom wall of the drawing base are recessed on the bottom of the two sides of the adjusting inner frame, upper guide rails recessed in the top of the drawing base are arranged above the two sides of the adjusting inner frame, and a filter and a deslagging groove close to the scraping and deslagging mechanism are arranged at one end of the top of the oil return groove.

[0013] Further, a lifting carriage is arranged at the bottom of the lifting arc plate, lifting cylinders connected with the bottom of the lifting arc plate are symmetrically and penetratingly arranged on the two sides of the lifting carriage, combined side frames are arranged on the outer walls of the side supporting arc plate and the side pressing arc plate, the combined side frame is composed of a traction sliding plate and a distance adjusting cylinder, and the lifting arc plate, the side supporting arc plate and the side pressing arc plate are connected to form a ring structure.

[0014] Further, anti-skid metal sleeves matched with the inner wall of the drawing base are symmetrically arranged at the bottom of the limiting sleeve, side blocks sleeved in the inner part of the limiting sleeve frame body are symmetrically arranged on the top of the drawing die holder, anti-falling metal frames matched with the inner die module are arranged at the bottom of one end of the drawing die holder, and an embedded groove matched with the embedded ring is recessed on the surface of one end of the inner die module towards the oil lubricating adapting mechanism.

[0015] Further, the lower ring sleeve is composed of a semicircular frame and a Y-shaped frame, ring adjusting cylinders are symmetrically arranged at the bottom of the Y-shaped frame and connected with the semicircular frame, a plurality of groups of inner guide rails are symmetrically embedded in the inner walls of the lower ring sleeve and the upper ring sleeve, the inner walls of the inner guide rails are connected with the flexible oil wiping ring, a driving motor is arranged on the top outer wall of the upper ring sleeve, side moving frames are symmetrically arranged on the both sides of the upper ring sleeve and slidably connected with the inner walls of the drawing base, a rotating frame is slidably connected with the inner walls of the inner guide rails and drivingly connected with the output end of the driving motor, the rotating frame is composed of a plurality of groups of circular rings, and is used for driving the flexible oil wiping ring to rotate; a plurality of groups of oil inlet valves are arranged on the outer walls of the same end of the lower ring sleeve and the upper ring sleeve.

[0016] Further, the scraping oil and residue discharging mechanism is symmetrically provided with moving frames on the both sides, inner rotating frames are symmetrically arranged on the inner walls of the embedded ring and the residue discharging ring, a rotating motor is arranged on the top of the embedded ring and drivingly connected with the inner rotating frame, a combined guide rod is hinged on the surface of the inner rotating frame, the combined guide rod is composed of a plurality of groups of sliding rods, a micro air cylinder and a metal hinge block, a limiting ring is arranged on the inner ring of the inner rotating frame and sleeved with the combined guide rod, a scraper is hinged on the bottom of the combined guide rod, the moving frame is connected with the upper guide rail in a matched mode, the metal hinge block is sleeved with the inner rotating frame, and a metal bolt rod is slidably sleeved with the surface of the micro air cylinder and arranged on the side wall of the limiting ring.

[0017] Further, an outer rotating frame is arranged on the outer wall of the end of the residue discharging ring away from the embedded ring, a plurality of groups of combined spray frames are annularly arranged on the inner ring wall of the outer rotating frame, and a plurality of groups of staggered jet ports and oil ports are arranged on the surface of the combined spray frame.

[0018] The beneficial effects of the present application are as follows:

[0019] 1、The present application can change the drawing mechanism assembly according to the size and model of the oxygen-free copper pipe, so as to ensure the adaptability. The conveying equipment can stably transport the oxygen-free copper pipe, one end of the pipe is pre-pressed and compressed, the pipe head penetrates the inner module, the drawing clamp clamps, the copper pipe is pulled by the hydraulic assembly through the inner module, the efficient and accurate drawing treatment is realized, the oil lubrication matching mechanism can be flexibly adjusted, the upper ring sleeve and the lower ring sleeve are connected into a circular ring to wrap the copper pipe through the ring adjusting cylinder and the inner pushing cylinder, the flexible oil wiping ring contacts the outer wall of the copper pipe, the external oil supply equipment provides lubricating oil, the lubricating oil is guided and dispersed through the branch pipe, the oil wiping ring is soaked and the lubricating oil is transmitted to the surface of the copper pipe; the driving motor drives the rotating ring and the oil wiping ring to rotate, so that the oil wiping ring is more closely attached to the surface of the copper pipe, the lubricating effect is improved, and the drawing resistance is reduced.

[0020] 2、The application is through the oil scraping and residue discharging mechanism, the scraper position can be adjusted according to the copper pipe size, the copper pipe surface is reciprocating scraped, the impurities are cleaned and the unevenly applied lubricating oil is treated, the moving frame driving mechanism reciprocating rotates, cooperates with the scraper to uniformly scrape, simultaneously, the upper guide rail drives the moving frame to transversely move, accelerates the sliding friction of the scraper, drives the displacement of the impurities and the oil level, when resetting, the combined spray frame rotates, the copper pipe surface is pneumatically cleaned, secondarily cleaned and repaired lubricating coating treatment through the air outlet and the oil outlet, the copper pipe surface quality is ensured.

[0021] 3、The application is through the oiling adaptation mechanism and the oil scraping and residue discharging mechanism, the lubricating oil and the impurities are dropped to the oil return groove, the filter in the oil return groove filters the impurities, the impurities are concentratedly discharged through the residue discharging groove, the recycled lubricating oil is pumped and extracted for reuse, the effective recycling of resources is realized, the production cost is reduced, the pipe package conveying mechanism is through the lifting cylinder and the distance adjusting cylinder, the lifting arc plate, the side lifting arc plate and the side pressure arc plate are close to the middle, the flexible ball multi-point contact wraps the copper pipe surface, the contact pressure is used to remove the pipe wall tremor of the copper pipe caused by the hydraulic drawing, the stability of the copper pipe in the drawing process is ensured, the product quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 It is the overall structure of the application;

[0024] Figure 2 It is the top view structure schematic diagram of the drawing base of the application;

[0025] Figure 3 It is the structure schematic diagram of the pipe package conveying mechanism of the application;

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

[0027] Figure 5 It is the structure schematic diagram of the limiting sleeve frame and the drawing die base of the application;

[0028] Figure 6 It is the three-dimensional structure schematic diagram of the oil scraping and residue discharging mechanism of the application;

[0029] Figure 7 It is the explosion structure schematic diagram of the oil scraping and residue discharging mechanism of the application;

[0030] Figure 8Structure diagram of the oil lubrication adapting mechanism of the application.

[0031] Fig. 1 is a drawing base; 101, a side slide groove; 102, a drawing guide groove; 103, a drawing bracket; 104, a suction groove; 105, an upper guide rail; 106, an adjusting inner frame; 107, an oil return groove; 2, a limiting sleeve frame; 3, a drawing die base; 301, an inner die block; 302, an embedding groove; 4, a pipe package conveying mechanism; 401, a lifting arc plate; 402, a side supporting arc plate; 403, a side pressing arc plate; 404, a lifting carriage; 405, a lifting cylinder; 406, a flexible ball; 407, a combined side frame; 5, an oil lubrication adapting mechanism; 501, a lower ring sleeve; 502, a ring adjusting cylinder; 503, an upper ring sleeve; 504, a driving motor; 505, an inner guide rail; 506, a flexible oil wiping ring; 507, a side moving frame; 6, an oil scraping and residue discharging mechanism; 601, an embedding ring; 602, a residue discharging ring; 603, a moving frame; 604, a scraper; 605, a rotary motor; 606, an outer rotary frame; 607, a combined spray frame; 608, an inner rotary frame; 609, a combined guide rod; 610, a metal hinge block; 611, a limiting ring. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0033] Embodiment one: please refer to Figure 1 - Figure 8 As shown in the drawing, the embodiment is a self-adapting wrapping type drawing mechanism suitable for oxygen-free copper pipe processing, which comprises a drawing base 1. A pipe package conveying mechanism 4 is embedded in the inner part of one end of the drawing base 1. An oil lubrication adapting mechanism 5 is embedded in the inner part of the other end of the drawing base 1. A limiting sleeve frame 2 is arranged between the pipe package conveying mechanism 4 and the oil lubrication adapting mechanism 5. A drawing die base 3 is sleeved at the center of the top of the limiting sleeve frame 2.

[0034] According to the size and model of the oxygen-free copper pipe to be drawn, the relevant components in the drawing mechanism are replaced and adapted. The oxygen-free copper pipe is smoothly transported to the drawing mechanism by the oxygen-free copper pipe conveying equipment. One end of the oxygen-free copper pipe is pre-compressed in advance so that the pipe head penetrates the inner die block 301 and extends to the inside of the pipe package conveying mechanism 4. After the oxygen-free copper pipe is clamped by the drawing clamp, the relevant structures on the drawing base 1 are adjusted. The oxygen-free copper pipe is drawn through the inner die block 301 by the drawing hydraulic assembly through the drawing clamp, so as to realize the drawing processing of the oxygen-free copper pipe by the inner die.

[0035] The inner module 301 inside the drawing die seat 3 is provided with a oiling adapting mechanism 5, and the end of the inner module 301 towards the oiling adapting mechanism 5 is provided with a oil scraping and residue discharging mechanism 6, which comprises an embedded ring 601 and a residue discharging ring 602, and the embedded ring 601 is internally provided with a plurality of scraping plates 604.

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

[0037] The drawing base 1 is provided with an adjusting inner frame 106 matched and clamped with the lower ring sleeve 501 on the groove bottom wall of the other end, and the adjusting inner frame 106 is recessed on both sides of the bottom and provided with oil return grooves 107 embedded on the bottom wall of the drawing base 1, and the adjusting inner frame 106 is provided with upper guide rails 105 recessed on the top of the drawing base 1 on both sides, and the oil return grooves 107 are provided with filter elements and residue discharging grooves close to the oil scraping and residue discharging mechanism 6 at one end of the top.

[0038] The lubricating oil and impurities generated by the operation of the oiling adapting mechanism and the oil scraping and residue discharging mechanism 6 drop towards the oil return grooves 107, the filter elements provided in the oil return grooves 107 filter the impurities in the lubricating oil, and the intercepted impurities are concentrated and discharged through the residue discharging grooves after accumulation, and the concentrated and recovered lubricating oil is extracted and reused by the pump.

[0039] The limiting sleeve frame 2 is symmetrically provided with anti-skid metal sleeves matched and clamped with the inner wall of the drawing base 1 on both sides of the bottom, the drawing die seat 3 is symmetrically provided with side blocks sleeved in the inner frame of the limiting sleeve frame 2 on both sides of the top, the drawing die seat 3 is provided with anti-dropping metal frames abutting against the inner module 301 at one end of the bottom, and the inner module 301 is recessed on the surface of one end towards the oiling adapting mechanism 5 and provided with an embedded groove 302 sleeved with the embedded ring 601.

[0040] The lower ring sleeve 501 is composed of a semicircular frame and a Y-shaped frame, the Y-shaped frame is symmetrically provided with ring air adjusting cylinders 502 connected with the semicircular frame at the bottom on both sides, a plurality of inner guide rails 505 are symmetrically embedded in the inner wall center of the lower ring sleeve 501 and the upper ring sleeve 503, the inner wall of the inner guide rail 505 is matched and clamped with the flexible oil wiping ring 506, the driving motor 504 is arranged on the top outer wall of the upper ring sleeve 503, the side moving frames 507 are symmetrically arranged on both sides of the upper ring sleeve 503 and slidably sleeved with the inner wall of the drawing base 1, the inner wall of the inner guide rail 505 is slidably sleeved with a rotating frame in transmission connection with the output end of the driving motor 504, the rotating frame is composed of a circular ring for driving the flexible oil wiping ring 506 to rotate, and a plurality 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 oil lubrication fitting mechanism adjusts the position of the inner frame 106 and the upper guide rail 105 on the drawing base 1 in cooperation, the semi-circular frame is driven by the ring air cylinder 502 to slide up, the inner push air cylinder is arranged on the inner wall of the side moving frame 603 and connected with the upper ring sleeve 503, the inner push air cylinder drives the upper ring sleeve 503 to slide down, until the lower ring sleeve 501 is connected with the upper ring sleeve 503, and the circular ring structure is spliced, the oxygen-free copper pipe sleeve is arranged in the inner ring, in this state, the inner wall of the flexible oil wiping ring 506 contacts the outer wall of the oxygen-free copper pipe, the external oil supply equipment is connected with the oil inlet valve through the pipe, and the lubricating oil is provided in the upper ring sleeve 503 and the lower ring sleeve 501, a plurality of groups of branch pipes are arranged in the upper ring sleeve 503 and the lower ring sleeve 501, which are used for guiding the dispersion flow of the lubricating oil, and the holes opened along the surface of the branch pipes overflow, until the surface of the flexible oil wiping ring 506 is wetted, and the wetting is transmitted to the surface of the contacted oxygen-free copper pipe.

[0042] The output end of the driving motor 504 is provided with a shaft coupling and a gear connected with the rotating frame, which drives the rotating ring spliced in a circular shape to rotate along the inner wall of the spliced inner guide rail 505, and the flexible oil wiping ring 506 is driven to rotate synchronously during the rotation of the rotating ring, accordingly, with the continuous conveying of the oxygen-free copper pipe, the flexible oil wiping ring 506 rotates at a constant speed and is permeated with oil, and the flexible oil wiping ring 506 is more closely contacted with the surface of the oxygen-free copper pipe due to the flexible material of the flexible oil wiping ring 506.

[0043] The scraping oil and residue discharging mechanism 6 is symmetrically provided with the moving frame 603 on both sides, the inner rotating frame 608 is symmetrically arranged on the inner wall of the embedded ring 601 and the residue discharging ring 602, the rotating motor 605 is arranged on the top of the embedded ring 601 and connected with the inner rotating frame 608, the combined guide rod 609 is hinged on the surface of the inner rotating frame 608, the combined guide rod 609 is spliced by a micro air cylinder, a plurality of groups of sliding rods and metal hinge blocks 610, the limiting ring 611 is arranged in the inner ring of the inner rotating frame 608 and sleeved with the combined guide rod 609, the scraper 604 is hinged on the bottom of the combined guide rod 609, the moving frame 603 is connected with the upper guide rail 105, the metal hinge block 610 is sleeved with the inner rotating frame 608, and the metal bolt rod is arranged on the side wall of the limiting ring 611 and sleeved with the surface of the micro air cylinder.

[0044] The oxygen-free copper pipe is close to the oil scraping and residue discharging mechanism 6 after being oiled, and the initial state of the oil scraping and residue discharging mechanism 6 is embedded in the embedded groove 302. After the drawing mechanism is started, the inner rotating frame 608 is driven by the rotating motor 605. The output end of the rotating motor 605 is connected with the inner rotating frame 608 through a shaft coupling and a gear, and the inner rotating frame 608 is driven to rotate. The inner rotating frame 608 drives the top of the micro air cylinder through the metal hinge block 610. The surface of the micro air cylinder is sleeved with the metal bolt rod, and an arc-shaped groove is arranged on the surface of the micro air cylinder and the metal bolt rod. During the movement of the micro air cylinder driven by the inner rotating frame 608, the micro air cylinder adjusts the angle through the arc-shaped groove and the metal bolt rod.

[0045] According to the size of the oxygen-free copper pipe, the micro air cylinder drives several groups of sliding rods to expand, so that the scraper 604 at the bottom of the sliding rod is displaced until it is attached to the surface of the oxygen-free copper pipe. With the continuous pulling and sliding of the oxygen-free copper pipe, the scraper 604 reciprocally scrapes the surface of the oxygen-free copper pipe, so that the residual impurities on the surface of the oxygen-free copper pipe are scraped and cleaned, and the unevenly applied lubricating oil is secondarily treated. A rotary air cylinder connected with the embedded ring 601 is arranged on the inner wall of the moving frame 603, which drives the whole oil scraping and residue discharging mechanism 6 to reciprocally rotate at a certain angle, and cooperates with several groups of scrapers 604 to uniformly scrape the surface of the oxygen-free copper pipe.

[0046] The outer rotating frame 606 is arranged on the outer wall of the end of the residue discharging ring 602 away from the embedded ring 601. A plurality of groups of combined spray frames 607 are arranged in an annular array on the inner wall of the outer rotating frame 606. A plurality of groups of staggered jet ports and oil ports are arranged on the surface of the combined spray frame 607.

[0047] During the contact between the scraper 604 and the oxygen-free copper pipe, the upper guide rail 105 is started in time, which drives the moving frame 603 to move axially and close to the oiling adapter mechanism, so that the scraper 604 slides and rubs faster along the surface of the oxygen-free copper pipe, and the impurities and oil intercepted by the scraper 604 are pushed and displaced 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 pipe and away from the inner mold.

[0048] During the resetting of the oil scraping and residue discharging mechanism 6, the rotating motor 605 is connected with the outer rotating frame 606 through a worm gear and a magnetic shaft coupling. The outer rotating frame 606 drives a plurality of groups of combined spray frames 607 to rotate. A gas slip ring / liquid slip ring is arranged between the combined spray frame 607 and the outer rotating frame 606. The gas slip ring / liquid slip ring is connected with an external gas supply device / liquid supply device pipeline through a pipe, and is not limited to this. The jet ports and the oil ports guide the airflow and the oil jet on the surface of the oxygen-free copper pipe, so that the impurities retained on the surface of the oxygen-free copper pipe are first cleaned by the airflow, and then secondarily cleaned by the jet oil. The residual oil performs repair and lubricating coating treatment on the area cleaned on the surface of the oxygen-free copper pipe.

[0049] The embodiment is a self-adaptive wrapping type drawing mechanism suitable for oxygen-free copper pipe processing, comprising a pipe wrapping conveying mechanism 4 provided with a lifting arc plate 401 connected with the drawing base 1 at the bottom, a side lifting arc plate 402 and a side pressing arc 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 lifting arc plate 402 and the side pressing arc plate 403.

[0050] The bottom of the lifting arc plate 401 is provided with a lifting carriage 404, lifting cylinders 405 are symmetrically arranged on both sides of the lifting carriage 404 and connected with the bottom of the lifting arc plate 401, a combined side frame 407 is arranged on the outer walls of the side lifting arc plate 402 and the side pressing arc plate 403, the combined side frame 407 is composed of a traction sliding plate and a distance adjusting cylinder, and the lifting arc plate 401, the side lifting arc plate 402 and the side pressing arc plate 403 are spliced to form a ring structure.

[0051] The oxygen-free copper pipe is in contact with the inner mold under the dragging of the drawing clamp, is affected by the size of the inner mold cavity, and is deformed under pressure, and after deformation, the oxygen-free copper pipe enters the pipe wrapping conveying mechanism 4, the pipe wrapping conveying mechanism 4 cooperates with the lifting cylinders 405 and a plurality of groups of distance adjusting cylinders to synchronously move the lifting arc plate 401, the side lifting arc plate 402 and the side pressing arc plate 403 towards the center, until the flexible balls 406 contact the surface of the oxygen-free copper pipe, realizing the wrapping type multi-point contact on the surface of the oxygen-free copper pipe, and using the contact pressure of a plurality of groups of flexible balls 406 and the surface of the oxygen-free copper pipe to remove the pipe wall vibration phenomenon caused by the dragging of the liquid pressure drawing assembly.

[0052] The embodiment is a self-adaptive wrapping type drawing mechanism suitable for oxygen-free copper pipe processing, comprising a drawing base 1 provided with a single control panel connected with a factory production supervision center outside, and a drawing supervision platform, a drawing data acquisition module, a risk data analysis module and an emergency decision control module are integrated and connected with the drawing base 1, through real-time data interaction and closed-loop control, intelligent supervision of the drawing process of the oxygen-free copper pipe is realized.

[0053] The single hole panel generates a supervision instruction when starting the drawing base 1 and sends it to the drawing data acquisition module, the drawing data acquisition module acquires mechanical component state parameters and copper pipe physical characteristic data in real time during the drawing process, provides basic input for the risk data analysis module, the mechanical component state parameters and the copper pipe physical characteristic data are marked as mechanical parameters and copper pipe parameters respectively, and environmental parameters are additionally acquired;

[0054] The mechanical parameters include lifting cylinder pressure P 托 , distance adjusting cylinder pressure P 调 , driving motor speed N, ring adjusting cylinder displacement L and scraper contact pressure P 刮 , and the data comes from the feedback of the combined guide rod micro cylinder.

[0055] Copper tube parameters include drawing speed V, collected by drawing clamp displacement sensor; tube wall temperature T, collected by infrared sensor; tube diameter size D collected by laser range finder; lubricating oil flow Q converted by oil inlet valve pressure sensor;

[0056] Environmental parameters include suction groove negative pressure P 抽 For monitoring the impurity recovery efficiency, oil return groove oil temperature T 油 Temperature difference before and after the filter element;

[0057] Collection process: the sensor samples in real time at a frequency of 100 Hz, and after signal filtering, it is transmitted to the monitoring platform through industrial Ethernet and stored in the time sequence database;

[0058] The risk data analysis module analyzes the collected data as follows:

[0059] Pipe wall tremor early warning model:

[0060] Combined with the principle of example two "flexible ball removal tremor", define tremor index:

[0061]

[0062] Where, ∝ and β represent that the pressure fluctuation weight is higher than the speed fluctuation, ∝ = 0.6, β = 0.4; ΔP 托 represents the standard deviation of the lifting cylinder pressure fluctuation; ΔV represents the instantaneous change rate of the drawing speed; P 托nom and V nom represent the nominal value of pressure and speed;

[0063] If K > 0.3, it is determined as "mild tremor", generate mild signal and send to emergency decision control module, after receiving the mild signal, the emergency decision control module increases the lifting cylinder pressure P 托 to P 托 ×1.1, through the distance adjusting cylinder of combined side frame 407 to reduce the distance between side support arc plates 402, enhance the wrapping force;

[0064] If K > 0.5, it is determined as "severe tremor", generate severe signal and send to emergency decision control module, after receiving the severe signal, the emergency decision control module triggers the drawing speed V to reduce to 0.8V nom , at the same time, the moving frame 603 of the oil scraping and residue discharging mechanism 6 is started to move, and the surface uniformity is enhanced;

[0065] Lubrication failure judgment:

[0066] The effective viscosity of lubricating oil is negatively related to temperature, combined with the problem of "high temperature reduces the characteristics of lubricant" in the paper, the critical temperature is established:

[0067]

[0068] wherein T 油初 represents the initial temperature of the lubricating oil, γ represents the flow compensation coefficient, and takes the value 15℃ / L, Q nom represents a pre-stored threshold value retrieved from the drawing supervision platform;

[0069] When Q 实 < 0.8Q nom , and T 油 > T cr , it is determined that the lubrication fails, a lubrication abnormality signal is generated and sent to the emergency decision-making control module. When the emergency decision-making control module receives the lubrication abnormality signal and detects that the lubrication fails, the oil inlet valve is driven to increase the flow of the lubricating oil to 1.2Q nom , and the rotating speed N of the flexible oil wiping ring 506 is driven to increase by 20%, so as to enhance the oil coating uniformity;

[0070] Data-driven intelligent control: through multi-sensor fusion, parameters such as pressure, speed, and temperature are collected, and based on the tremor index K, the lubrication critical temperature T cr , and other models, the risk is evaluated in real time, the response time is less than 200 ms, and the change from “post-detection” to “pre-prevention” is realized;

[0071] Closed-loop control and adaptability: the emergency decision-making module automatically adjusts the execution parameters such as cylinder pressure, motor speed, and lubricating oil flow according to the deviation, forms a “collection-analysis-control” closed loop, significantly reduces the cost of manual intervention, and improves the production stability;

[0072] Efficient use of resources: the lubricating oil is recovered by the oil return groove 107 filter, the impurities are concentrated and treated by the slag discharge groove, and the oil is secondarily used by the spray frame, so that the consumption of lubricating oil is reduced by 30%, and the waste discharge is reduced, which meets the green manufacturing concept.

[0073] In combination with Embodiment One and Embodiment Two, the oxygen-free copper pipe drawing process has many beneficial effects. The drawing mechanism assembly can be adjusted according to the size of the copper pipe to realize precise adaptation and efficient drawing; the oil lubrication adaptation mechanism can make the lubricating oil evenly spread on the surface of the copper pipe through the rotatable flexible oil wiping ring 506, so as to improve the lubrication effect and reduce the drawing resistance; the oil scraping and slag discharging mechanism 6 can adjust the position of the scraper 604 to complete the removal of impurities and the homogenization of lubricating oil, and can also perform secondary cleaning and lubrication repair through air and oil spraying; the oil return groove 107 filters and recovers the lubricating oil to realize resource recycling and reduce costs; the pipe package conveying mechanism 4 uses the flexible ball 406 to remove the pipe wall tremor to ensure the stability of the drawing and improve the product quality.

[0074] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

[0075] In the description of this specification, the references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Related accessories include commonly used mechanical connection components in this field such as couplings, lead screws, gears, and gaskets, but are not limited to these. Specific replacements and adaptations are made according to actual use.

[0076] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An adaptive wrapping-type drawing mechanism suitable for oxygen-free copper tube processing, comprising a drawing base (1), characterized in that, The drawing base (1) is internally fitted with a tube package conveying mechanism (4) at one end and an oil lubrication adapter mechanism (5) at the other end. A limiting sleeve (2) is provided between the tube package conveying mechanism (4) and the oil lubrication adapter mechanism (5), and a drawing die base (3) is sleeved at the top center of the limiting sleeve (2). The bottom of the tube conveying mechanism (4) is provided with a lifting arc plate (401) that is connected to the pulling base (1). A side supporting arc plate (402) and a side pressing arc plate (403) are provided above the lifting arc plate (401). Flexible balls (406) are provided on the inner walls of the lifting arc plate (401), the side supporting arc plate (402) and the side pressing arc plate (403). The drawing die base (3) is provided with an inner module (301) facing the lubrication adapter mechanism (5). The inner module (301) facing the lubrication adapter mechanism (5) is provided with an oil scraping and slag removal mechanism (6). The oil scraping and slag removal mechanism (6) includes an insert ring (601) and a slag removal ring (602). The insert ring (601) is provided with several sets of scrapers (604). The lubrication adapter mechanism (5) includes a lower ring sleeve (501) and an upper ring sleeve (503). The inner wall of the upper ring sleeve (503) is provided with several sets of inner guide rails (505) and flexible oil wiping rings (506). The bottom of the lifting arc plate (401) is provided with a lifting slide (404), and the lifting slide (404) is symmetrically provided with lifting cylinders (405) connected to the bottom of the lifting arc plate (401) on both sides. The outer walls of the side supporting arc plate (402) and the side pressing arc plate (403) are provided with combined side frames (407). The combined side frame (407) is composed of a traction slide plate and an adjusting cylinder. The lifting arc plate (401), the side supporting arc plate (402) and the side pressing arc plate (403) are spliced ​​to form a ring structure. The lower ring sleeve (501) is composed of a semi-circular frame and a Y-shaped frame. The bottom sides of the Y-shaped frame are symmetrically connected with ring-adjusting cylinders (502) that are connected to the semi-circular frame. Several sets of inner guide rails (505) are symmetrically fitted into the center of the inner wall of the lower ring sleeve (501) and the upper ring sleeve (503). The inner wall of the inner guide rail (505) is engaged with the flexible oil wiping ring (506). A drive motor (504) is provided on the top outer wall of the upper ring sleeve (503). The sides of the upper ring sleeve (503) are symmetrically provided with side moving frames (507) that are slidably fitted on the inner wall of the pull-out base (1). The oil scraping and slag removal mechanism (6) is symmetrically provided with movable frames (603) on both sides. The inner walls of the embedded ring (601) and the slag removal ring (602) are symmetrically provided with inner rotating frames (608). The top of the embedded ring (601) is provided with a rotary motor (605) that is connected to the inner rotating frame (608) for transmission. The surface of the inner rotating frame (608) is hinged with a combined guide rod (609). The combined guide rod (609) is composed of a miniature cylinder, several sets of slide rods and metal hinge blocks (610). The inner ring of the inner rotating frame (608) is provided with a limiting ring (611) that is sleeved with the combined guide rod (609). The bottom of the combined guide rod (609) is hinged with a scraper (604). An outer rotating frame (606) is provided on the outer wall of the end of the slag discharge ring (602) away from the embedded ring (601). Several sets of combined spray frames (607) are arranged in a ring array on the inner wall of the outer rotating frame (606). Several sets of staggered air jets and oil jets are provided on the surface of the combined spray frame (607).

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

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

4. The adaptive wrapping drawing mechanism for oxygen-free copper tube processing according to claim 1, characterized in that, The bottom sides of the limiting sleeve (2) are symmetrically provided with anti-slip metal sleeves that engage with the inner wall of the drawing base (1). The top sides of the drawing die base (3) are symmetrically provided with side blocks that fit into the body of the limiting sleeve (2). One end of the drawing die base (3) is provided with an anti-detachment metal frame that abuts against the inner module (301). The inner module (301) has a recessed groove (302) on the surface facing the lubrication adapter (5) that engages with the insert ring (601).

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