Winding device for glass fiber reinforced polytetrafluoroethylene material

Abstract

The invention discloses a rolling device for a glass fiber reinforced polytetrafluoroethylene material, relates to the field of rolling forming, and aims to solve the problems that existing equipment is unstable in tension, easy to deviate, difficult in component control and poor in synergism. The device comprises a frame base, a PLC (Programmable Logic Controller) control unit, and an uncoiling mechanism, a buffer mechanism, a deviation rectifying mechanism, a tension control mechanism, a heating mechanism, a scraping and grinding mechanism and a coiling mechanism which are sequentially arranged along a material coil transmission direction, and all the mechanisms are electrically connected with the PLC control unit. The uncoiling mechanism fixes and releases a material coil, the buffering mechanism and the tension control mechanism cooperate to maintain constant tension, the deviation correcting mechanism corrects transverse deviation, the heating mechanism improves plasticity of the material coil, the scraping and grinding mechanism regulates and controls material components, and the coiling mechanism completes coiling. The device is high in automation degree, capable of guaranteeing the consistency of product quality and improving the production efficiency, and suitable for rolling forming of the material.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rolling forming equipment, in particular to a kind of glass fiber reinforced polytetrafluoroethylene material rolling device, it is applicable to aerospace, petrochemical industry, machinery manufacturing etc. Field of sealed parts, bearing and bushing product glass fiber reinforced polytetrafluoroethylene composite material rolling forming processing, can realize the tension control in material winding process, transverse correction, online component adjustment and full-process automation collaborative work. BACKGROUND

[0002] Glass fiber reinforced polytetrafluoroethylene composite material is widely used in high-end industrial fields due to excellent wear resistance, self-lubricating, corrosion resistance and high mechanical strength. Its typical preparation process needs to wind the glass fiber cloth impregnated with polytetrafluoroethylene dispersion liquid on the core mold under specific process conditions, and then sintered into shape at high temperature. The process stability of the winding process directly determines the quality of the final product.

[0003] Currently, the material winding forming link still relies on traditional rolling equipment, which has many technical defects, as follows: (1) Insufficient tension control accuracy: the winding tension is easily affected by unwinding inertia, material deformation and transmission speed fluctuation, and it is difficult to maintain constant. When the tension is too small, the interlayer bonding force of the winding material is poor, and loose phenomenon easily occurs; when the tension is too large, the glass fiber is damaged, and even the material is broken, which seriously affects the mechanical properties and structural integrity of the product.

[0004] (2) Transverse deviation problem is prominent: due to the structural deviation of the glass fiber roll itself (such as uneven edges, uneven winding diameter), and the influence of equipment vibration, roller coaxiality error and other disturbances in the transmission process, transverse deviation easily occurs. This will cause the product edge to be uneven after winding, and the coaxiality error to be out of tolerance, which cannot meet the geometric precision requirements of high-precision sealing elements, bearings and other products.

[0005] (3) Material composition regulation is difficult: the traditional equipment lacks online composition adjustment function, and cannot precisely control the polytetrafluoroethylene (PTFE) content on the surface of the glass fiber cloth. If gradient materials with different PTFE contents are needed, different impregnated raw material rolls need to be replaced, which not only increases the production cost, but also needs frequent shutdown adjustment, resulting in low production efficiency.

[0006] (4) Poor coordination between process units: the unwinding, tension control, correction, winding and other process units are independently operated, and lack a unified control core. The parameters of each unit need to be adjusted manually according to experience, and it is difficult to realize synchronous linkage, resulting in poor production process stability, low product quality consistency, and high dependence on the skill level of operators, which further limits the expansion of production scale and the improvement of product quality.

[0007] In summary, the prior art urgently needs a high integration, high degree of automation, and integrated precision control of tension, centering, temperature and material composition of the rolling device to solve the above technical problems and ensure the stability and efficiency of the glass fiber reinforced polytetrafluoroethylene material rolling forming. SUMMARY

[0008] In view of the deficiencies of the prior art, the purpose of the present application is to provide a glass fiber reinforced polytetrafluoroethylene material rolling device, which realizes constant tension winding, automatic deviation correction, online scraping adjustment of PTFE content and full-process automatic operation through integrated structure design and PLC cooperative control, and improves product quality consistency and production efficiency.

[0009] In order to achieve the above purpose, the specific scheme adopted by the present application is as follows: A glass fiber reinforced polytetrafluoroethylene material rolling device, comprising: a frame base; a PLC control unit for controlling the operation of the entire device; an unwinding mechanism for placing and releasing a glass fiber roll; a buffer mechanism for adjusting the tension of the roll and feeding back the control of the unwinding speed; a deviation correction mechanism for correcting the lateral deviation of the roll; a tension control mechanism for accurately controlling the tension of the roll; a heating mechanism for heating the roll to improve its plasticity; a scraping mechanism for scraping the surface of the roll to control the material composition; a winding mechanism for winding the roll onto a mandrel; wherein the unwinding mechanism, the buffer mechanism, the deviation correction mechanism, the tension control mechanism, the heating mechanism, the scraping mechanism and the winding mechanism are sequentially arranged on the frame base along the transmission direction of the roll, and are electrically connected with the PLC control unit and cooperatively controlled by the PLC control unit.

[0010] Further, the unwinding mechanism comprises a tensioning shaft and a drive motor; the tensioning shaft can be radially expanded to fix the roll; the drive motor is in transmission connection with the tensioning shaft for driving the unwinding, and the drive motor is controlled by the control unit and can be dynamically adjusted according to the feedback signal of the buffer mechanism.

[0011] Further, the buffer mechanism comprises a bracket, a guide wheel, a fixed wheel, a floating wheel, a position detection element and a counterweight wheel; the floating wheel is movably arranged on the bracket in the vertical direction; The counterweight is connected with the floating wheel, for providing constant pull-down force to the floating wheel; The material roll passes through the guide wheel, the fixed wheel and the floating wheel in a meandering path; The position detection element is a magnetic grid, for detecting real-time position of the floating wheel and generating a signal; Wherein, the floating wheel moves up and down by tension change of the material roll, and its position signal is fed back to the PLC control unit, and the PLC control unit dynamically adjusts unwinding speed of the unwinding mechanism according to the signal, so as to maintain stability of the material roll tension.

[0012] Further, the deviation rectifying mechanism comprises a first deviation rectifying unit, a second deviation rectifying unit and a deviation rectifying driving assembly; The first deviation rectifying unit and the second deviation rectifying unit are arranged in a spaced manner along a material roll running direction; The first deviation rectifying unit and the second deviation rectifying unit each comprise a fixed roller and a floating roller, and the floating roller is movable relative to the fixed roller to adjust a clamping gap between the two for the material roll to pass through; The deviation rectifying driving assembly is connected with the first deviation rectifying unit and / or the second deviation rectifying unit, for driving the floating roller to move to adjust a width of the clamping gap.

[0013] Further, the tension control mechanism comprises a pressure regulating roller, a pressure sensor and a tension control driving assembly; The tension control driving assembly is capable of adjusting a height of the pressure regulating roller; The pressure sensor is used for detecting an actual pressure value applied by the pressure regulating roller to the material roll; Wherein, a signal of the pressure sensor is fed back to the PLC control unit, and the PLC control unit adjusts the height of the pressure regulating roller by adjusting an output of the tension control driving assembly, so as to adjust the pressure of the material roll, thereby maintaining constant tension of the material roll.

[0014] Further, the heating mechanism comprises an electric heating air blower and a heat preservation cover; The heat preservation cover has a passage for the material roll to pass through horizontally; The electric heating air blower is arranged inside the heat preservation cover, for generating hot air; Wherein, the heating mechanism is connected with the PLC control unit, so as to realize setting, control and real-time monitoring of heating temperature.

[0015] Further, the scraping mechanism comprises: An adjusting assembly is arranged to control the scraping depth, thereby controlling the amount of material scraped from the surface of the roll; the adjusting assembly comprises a translation block and a lifting block, the translation block and the lifting block abut, and when the translation block moves towards the lifting block, an upward force is generated on the lifting block at the abutting position; A scraping disc is arranged on the lifting block and is capable of scraping the surface of the roll; A scraping drive assembly is connected to the translation block and drives the translation block to translate.

[0016] Further, the scraping mechanism further comprises a digital dial gauge for displaying the feeding depth of the scraping disc.

[0017] Further, the winding mechanism comprises a chuck, a servo motor, a top pin cylinder and a floating top pin; The chuck is used to clamp the mandrel and is driven to rotate by the servo motor; The floating top pin is arranged opposite to the chuck and is driven to move axially by the top pin cylinder to tightly clamp or release the workpiece; The servo motor is controlled by the PLC control unit and is used to control the winding speed and torque.

[0018] Further, the winding mechanism further comprises a jacking cylinder capable of lifting relative to the frame base, the jacking cylinder is arranged between the chuck and the floating top pin, and a jacking roller is arranged on the top of the jacking cylinder and is used to lift up to assist tensioning the roll when the roll is divided or the tail is wound.

[0019] Advantages: (1) Precise tension control to ensure the structural integrity of the material: The device realizes stable control of the tension of the roll through the double tension regulation structure of the "buffer mechanism + tension control mechanism". In the buffer mechanism, the floating wheel moves up and down with the change of tension under the constant tension of the counterweight wheel, the magnetic grid detects its position in real time and feeds back to the PLC, and the PLC dynamically adjusts the speed of the unwinding mechanism drive motor, forming a feed-forward tension buffer. In the tension control mechanism, the pressure sensor directly detects the pressure of the pressure regulating roller on the roll, and the PLC adjusts the height of the pressure regulating roller through closed-loop control to actively maintain constant tension. The double mechanisms work together to effectively avoid the problem of material loosening or breaking caused by tension fluctuation, and ensure the structural integrity and mechanical properties of the glass fiber reinforced polytetrafluoroethylene material.

[0020] (2) High accuracy of deviation correction, improving the geometric accuracy of products: The deviation correction mechanism adopts the adjusting structure of "fixed roller + floating roller", the fixed roller provides stable reference, and the floating roller realizes high-precision position adjustment under the driving of the precision lead screw. The photoelectric sensor detects the edge position of the material roll in real time, and the PLC controls the driving motor through the PID algorithm to ensure that the material roll always transmits along the preset path, completely solving the problem of uneven product edges and coaxiality error caused by lateral deviation, significantly improving the geometric accuracy of products such as seals and bearings, and meeting the accuracy requirements of high-end industrial fields.

[0021] (3) Online adjustment of material composition, enhancing the flexibility of the equipment: The scraping mechanism is the core innovative structure of the device, which can realize 0.001mm level scraping depth adjustment through the abutting transmission of the translation block and the lifting block combined with the precise display of the digital dial gauge, and then quantitatively scrape the PTFE material on the surface of the material roll to accurately control the PTFE content in the material. Without stopping to replace the raw materials, gradient materials with different PTFE contents can be prepared on the same production line, which not only reduces the production cost, but also greatly improves the adaptability of the equipment to different product specifications and enhances the production flexibility.

[0022] (4) Full-process automation cooperation, improving production efficiency and quality consistency: The whole device takes the PLC control unit as the core, realizes real-time communication with each mechanism servo motor and sensor through bus protocol. From unwinding, tension buffering, deviation correction, heating, scraping to winding, each process link is synchronized and linked, parameters can be monitored, stored and traced in real time, completely eliminating the dependence on the experience of operators. At the same time, the PLC supports the "formula" function, which can quickly call the process parameters of different products, shorten the changeover time and improve the production efficiency; and the parameters of each link are accurately controllable, effectively ensuring the quality consistency of batch products.

[0023] (5) Stable and reliable structure, prolonging the service life of the equipment: All functional mechanisms are integrated on the frame base, ensuring the uniformity and overall rigidity of the installation reference of each mechanism, reducing vibration interference during equipment operation; key components such as tensioning shaft arc expansion plate, roller bearing and precision lead screw are made of high-quality materials, with good wear resistance and fatigue resistance; in addition, protective covers, buffer springs and other protection and damping structures are provided at each transmission part, further improving the stability and reliability of the equipment operation, prolonging the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the winding device in the application.

[0025] Figure 2 It is a structural schematic diagram of the unwinding mechanism.

[0026] Figure 3 It is a structural schematic diagram of the buffering mechanism.

[0027] Figure 4 Structure diagram of the deviation rectifying mechanism.

[0028] Figure 5 Structure diagram of the tension control mechanism.

[0029] Figure 6 Structure diagram of the winding mechanism.

[0030] Figure 7 Structure diagram of the heating mechanism.

[0031] Figure 8 Structure diagram of the scraping mechanism.

[0032] Figure 9 Structure diagram of the scraping mechanism.

[0033] Figure illustration mark: 1, unwinding mechanism, 1-1, tensioning shaft, 1-11, roll material main shaft, 1-12, conical expansion block, 1-13, arc-shaped expansion plate, 1-2, locking nut, 1-3, first servo motor, 1-4, mounting disc; 2, buffer mechanism, 2-1, guide wheel, 2-2, floating wheel, 2-3, fixed wheel, one 2-4, counterweight wheel; 3, deviation rectifying mechanism, 3-1, precision lead screw, 3-2, floating roller, 3-3, telescopic rod, 3-4, fixed roller, 3-5, driving motor; 4, tension control mechanism, 4-1, V-shaped pulley, 4-2, pressure regulating roller, 4-3, pressure sensor, 4-4, second servo motor; 5, heating mechanism, 5-1 electric heating blower, 5-2, heat preservation cover; 6, scraping mechanism, 6-1, scraping disc, 6-2, scraping drive assembly, 6-3, digital dial gauge, 6-4, translation block, 6-5, compression spring, 6-6, lifting block, 6-61, lifting bottom block, 6-62, lifting top block, 6-7, buffer spring 7, winding mechanism, 7-1, floating center, 7-2, center cylinder, 7-3, chuck, 7-4, third servo motor, 7-5, jacking cylinder, 7-6, jacking roller; 8, frame base. DETAILED DESCRIPTION

[0034] The technical solutions of the present application will be described clearly and completely below in combination with specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0035] In the description of the present application, it needs to be understood that the terms "upper", "lower" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0036] It should be noted that the relational terms such as "first" and "second" and the like are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0037] The application discloses a kind of glass fiber reinforced polytetrafluoroethylene material coiling device, including frame base 8, PLC control unit, and uncoiling mechanism 1, buffer mechanism 2, deviation rectification mechanism 3, tension control mechanism 4, heating mechanism 5, scraping mechanism 6 and winding mechanism 7 are sequentially arranged on frame base 8 along the material roll transmission direction;Wherein, uncoiling mechanism 1, buffer mechanism 2, deviation rectification mechanism 3, tension control mechanism 4, heating mechanism 5, scraping mechanism 6 and winding mechanism 7 are electrically connected with PLC control unit, and the action of each mechanism is cooperatively controlled by PLC control unit.The specific structure of each mechanism is described in detail as follows.

[0038] The unwinding mechanism 1 is used for placing and releasing a glass fiber roll, comprising a tensioning shaft 1-1 and a driving motor 1-3; the tensioning shaft 1-1 can be radially expanded to fix the roll, and specifically comprises a roll shaft 1-11, a conical expansion block 1-12, an arc-shaped expansion plate 1-13 and a mounting disc 1-4, the mounting disc 1-4 is fixed to the outer part of the roll shaft 1-11 near the rear end, the arc-shaped expansion plate 1-13 is slidably arranged on the mounting disc 1-4 in the radial direction and is uniformly distributed along the circumferential direction of the mounting disc 1-4, the mounting disc 1-4 is provided with a radial sliding groove matched with the arc-shaped expansion plate 1-13, the conical expansion block 1-12 is sleeved on the roll shaft 1-11 and is clamped with the arc-shaped expansion plate 1-13, and the front end of the roll shaft 1-11 is provided with a threaded structure, and a locking nut 1-2 is screwed on the threaded structure; the driving motor 1-3 is in transmission connection with the tensioning shaft 1-1 (specifically connected through a synchronous belt, and a protective cover is arranged at the transmission position), used for driving the unwinding, and the driving motor 1-3 is controlled by a PLC control unit and can dynamically adjust the rotating speed according to the feedback signal of the buffer mechanism 2.

[0039] The buffer mechanism 2 is used for adjusting the tension of the roll and feeding back the control of the unwinding speed, comprising a support, a guide wheel 2-1, a fixed wheel 2-3, a floating wheel 2-2, a position detection element and a counterweight wheel 2-4; the support is fixed on the frame base 8, the guide wheel 2-1 and the fixed wheel 2-3 are both rotationally connected to the support, and the guide wheel 2-1 is provided with two, and the fixed wheel 2-3 is provided with two; the floating wheel 2-2 is movably arranged on the support in the vertical direction through a sliding block mechanism, and the sliding block mechanism is matched with the vertical guide rail on the support; the counterweight wheel 2-4 is connected with the rotating shaft of the floating wheel 2-2, used for providing a constant downward pulling force to the floating wheel 2-2; the roll passes through each roller in a circuitous path (in turn around the guide wheel 2-1, the upper fixed wheel 2-3, the floating wheel 2-2, the lower fixed wheel 2-3 and the other guide wheel 2-1); the position detection element is a magnetic grid 2-5, which is installed on the support, used for detecting the real-time position of the floating wheel 2-2 and generating a signal, and preferably further comprising a limit switch to ensure the safety and reliability of the mechanism; the floating wheel 2-2 moves up and down through the tension change of the roll, and the position signal thereof is fed back to the PLC control unit, and the PLC control unit dynamically adjusts the unwinding speed of the unwinding mechanism 1 according to the signal to maintain the stability of the roll tension.

[0040] The deviation correction mechanism 3 is used for correcting the lateral deviation of the roll, ensuring the roll to be transmitted along the preset path, and is composed of a first deviation correction unit, a second deviation correction unit and a deviation correction driving assembly. The first deviation correction unit and the second deviation correction unit are arranged at intervals along the direction of the roll, and have the same structure, each including a fixed roller 3-4 and a floating roller 3-2. The two are connected by an extensible rod 3-3, and the length of the extensible rod 3-3 is the clamping gap through which the roll passes. The floating roller 3-2 can move relative to the fixed roller 3-4 to adjust the gap size and adapt to different width rolls or preliminarily correct the deviation. The deviation correction driving assembly includes a driving motor 3-5 and a precision screw rod 3-1. The fixed roller 3-4 is fixed on the fixed part of the precision screw rod 3-1 through a firm support, serving as a stable deviation correction reference. The floating roller 3-2 is installed on a sliding seat connected to the nut block of the precision screw rod 3-1, and can move along the screw rod with the nut block. The driving motor 3-5 is connected to the precision screw rod 3-1 through a shaft coupling, and can drive the precision screw rod 3-1 to rotate, thereby driving the floating roller 3-2 to move and accurately adjusting the clamping gap width. In addition, a photoelectric sensor is arranged at the entrance of the deviation correction mechanism 3, which is electrically connected with the PLC control unit, can detect the edge position of the roll in real time and feed back signals. After receiving the signals, the PLC control unit controls the driving motor 3-5 to act, corrects the lateral deviation of the roll by adjusting the position of the floating roller 3-2, and ensures the centring of the roll.

[0041] The tension control mechanism 4 is used for accurately controlling the tension of the roll, and includes a pressure regulating roller 4-2, a pressure sensor 4-3 and a tension control driving assembly. The pressure regulating roller 4-2 is rotatably connected to a support seat. The tension control driving assembly includes a second servo motor 4-4 and a transmission assembly (worm and gear or screw and nut pair), which is connected to the support seat. The second servo motor 4-4 drives the support seat to move up and down through the transmission assembly, thereby adjusting the height of the pressure regulating roller 4-2. The pressure sensor 4-3 is installed on the support seat and is used for detecting the actual pressure value applied to the roll by the pressure regulating roller 4-2. The signal of the pressure sensor 4-3 is fed back to the PLC control unit, which adjusts the height of the pressure regulating roller 4-2 by adjusting the output of the tension control driving assembly, thereby adjusting the pressure of the roll to maintain the constant tension of the roll. The tension control mechanism 4 further includes a pair of V-shaped pulleys 4-1 rotatably connected to the frame base 8. The roll is wound through one V-shaped pulley 4-1, the pressure regulating roller 4-2 and then the other V-shaped pulley 4-1 with a certain wrapping angle. The groove design of the V-shaped pulley 4-1 is used to increase the contact surface and friction force with the roll, preventing transmission slip.

[0042] The heating mechanism 5 is used for heating the material roll to improve its plasticity, and comprises an electric heating blower 5-1 and a heat preservation cover 5-2; the heat preservation cover 5-2 is fixed on the frame base 8, and a channel for the material roll to pass horizontally is formed in the heat preservation cover 5-2; the electric heating blower 5-1 is arranged in the heat preservation cover 5-2 and is used for generating hot air, and the electric heating blower 5-1 comprises an electric heating tube and a centrifugal fan, the electric heating tube is used for heating air, and the centrifugal fan is used for uniformly blowing the hot air into the channel; the heating mechanism 5 is connected with the PLC control unit, and the setting, control and real-time monitoring of the heating temperature can be realized, so that the uniformity of the material roll heating is ensured.

[0043] The scraping mechanism 6 is used for scraping the surface of the material roll to control the material composition (PTFE content), and comprises an adjusting assembly, a scraping disc 6-1 and a scraping drive assembly 6-2; the adjusting assembly is used for controlling the scraping depth and then controlling the amount of material scraped from the surface of the material roll, and the adjusting assembly is arranged in the shell and comprises a translation block 6-4 and a lifting block 6-6, the translation block 6-4 is slidingly connected with the shell base, the lifting block 6-6 is arranged above the translation block 6-4, and the translation block 6-4 and the lifting block 6-6 abut, and when the translation block 6-4 moves towards the lifting block 6-6, an upward force is generated on the lifting block 6-6 at the abutting position. The lifting block 6-6 comprises a lifting bottom block 6-61 and a lifting top block 6-62, wherein the scraping disc 6-1 is mounted on the lifting top block 6-62, and a semi-elliptical scraping cutter is arranged on the scraping disc 6-1 and can scrape the surface of the material roll; the scraping drive assembly 6-2 is connected with the translation block 6-4 and is used for driving the translation block 6-4 to translate; the scraping mechanism 6 further comprises a digital dial gauge 6-3, a compression spring 6-5 and a buffer spring 6-7, the digital dial gauge 6-3 is used for displaying the feeding depth of the scraping disc 6-1, and the resolution can reach 0.001 mm; the compression spring 6-5 is arranged between the translation block 6-4 and the inner wall of the shell and is used for stably supporting the translation block 6-4 and eliminating the reverse clearance; the buffer spring 6-7 is arranged between the lifting bottom block 6-61 and the lifting top block 6-62 and is used for supporting the lifting block 6-6 and playing a buffering role, so that the feeding process is stable and free of impact.

[0044] The winding mechanism 7 is used for winding the material roll on the mold mandrel, comprising a chuck 7-3, a servo motor 7-4, a top center cylinder 7-2 and a floating center 7-1; the chuck 7-3 is used for clamping one end of the mandrel, the chuck 7-3 is in transmission connection with the servo motor 7-4 (the third servo motor, usually equipped with a speed reducer), the servo motor 7-4 is controlled by the PLC control unit, and the servo motor 7-4 is used for controlling the winding speed and torque; the floating center 7-1 is arranged opposite to the chuck 7-3, the floating center 7-1 is installed on a slidable base, and the slidable base is in sliding connection with the frame base 8; the top center cylinder 7-2 is connected with the slidable base, and is used for driving the floating center 7-1 to move axially so as to tightly press or loosen the workpiece (the mold mandrel); the winding mechanism 7 further comprises a jacking cylinder 7-5 capable of lifting relative to the frame base 8, the jacking cylinder 7-5 is arranged on the frame base 8 between the chuck 7-3 and the floating center 7-1, a jacking roller 7-6 is arranged at the top of the jacking cylinder 7-5, and the jacking roller 7-6 is used for lifting up when the material roll is divided or the tail is cut, so as to assist in tensioning the material roll.

[0045] As shown in Figure 1 The winding device of the glass fiber reinforced polytetrafluoroethylene material of the present application, the transmission path of the material roll (glass fiber material roll) is in turn: unwinding mechanism 1→buffering mechanism 2→correction mechanism 3→tension control mechanism 4→heating mechanism 5→grinding mechanism 6→winding mechanism 7, and the specific operation process is as follows: (1) Equipment initialization and parameter setting: install the mandrel between the chuck 7-3 and the floating center 7-1 of the winding mechanism 7, start the top center cylinder 7-2, drive the floating center 7-1 to tightly press the mandrel; select or input the process parameters of the target product (including tension setting value, heating temperature, grinding depth, winding speed, etc.) on the PLC man-machine interface; (2) Unwinding preparation: manually wrap the glass fiber material roll on the tensioning shaft 1-1 of the unwinding mechanism 1, tighten the locking nut 1-2, push the conical expansion block 1-12 to slide along the roll material main shaft 1-11, make the arc-shaped expansion plate 1-13 radially expand, and fix it from the inner hole of the material roll; start the first servo motor 1-3, and the material roll starts to slowly unwind; (3) Tension buffering and preliminary adjustment: after the material roll is drawn out from the unwinding mechanism 1, it passes around the guide wheel 2-1, the fixed wheel 2-3 and the floating wheel 2-2 of the buffering mechanism 2 according to the preset detour path; the floating wheel 2-2 moves up and down under the tension of the counterweight wheel 2-4 as the material roll tension changes, the magnetic grid 2-5 detects the position of the floating wheel 2-2 and feeds back to the PLC, and the PLC adjusts the rotating speed of the first servo motor 1-3 according to the position signal to maintain the initial tension of the material roll stable; (4) Transverse deviation correction: the roll enters the deviation correction mechanism 3, and the photoelectric sensor detects the edge position of the roll and feeds back a signal to the PLC; if the roll deviates laterally, the PLC controls the driving motor 3-5 to start, drives the floating roller 3-2 to move through the precision screw 3-1, adjusts the clamping gap between the fixed roller 3-4 and the floating roller 3-2, corrects the deviation of the roll, and ensures that the roll is transmitted along the preset path.

[0046] (5) Precise tension control: the roll after deviation correction enters the tension control mechanism 4, and passes through the V-shaped pulley 4-1 and the pressure regulating roller 4-2; the pressure sensor 4-3 detects the pressure of the pressure regulating roller 4-2 on the roll and feeds back to the PLC, the PLC compares the actual pressure with the pressure value corresponding to the set tension, adjusts the height of the pressure regulating roller 4-2 through the second servo motor 4-4, and precisely controls the tension of the roll; (6) Heating and composition adjustment: the roll enters the heating mechanism 5, the electric heating air blower 5-1 generates hot air, and a constant temperature field is formed in the passage of the heat preservation cover 5-2, so that the roll is preheated to improve its flexibility and PTFE activity; if the PTFE content needs to be adjusted, the roll after preheating enters the scraping mechanism 6, the PLC controls the scraping drive assembly 6-2 to drive the translation block 6-4 to move, the translation block 6-4 drives the lifting block 6-6 to rise, drives the scraping disc 6-1 to approach the surface of the roll, the digital dial gauge 6-3 displays the scraping depth in real time, until the set value is reached, and the scraping disc 6-1 quantitatively scrapes the PTFE on the surface of the roll; (7) Winding and forming: the treated roll is conveyed to the winding mechanism 7.

[0047] The unexplained part of the application is the prior art.

[0048] The above is only a preferred embodiment of the application, and is not limited in any form. Any equivalent transformation or modification according to the essence of the application should be covered within the protection scope of the application.

Claims

1. A rolling device for glass fiber reinforced polytetrafluoroethylene material, characterized in that: include: Frame base (8); PLC control unit, used to control the operation of the entire device; An unwinding mechanism (1) for placing and releasing a roll of glass fiber material; A buffer mechanism (2) for adjusting the tension of the coil and providing feedback control over the uncoiling speed; A deviation correction mechanism (3) for correcting lateral deviation of the roll; A tension control mechanism (4) for precisely controlling the tension of the roll; A heating mechanism (5) for heating the material roll to improve its plasticity; A scraping mechanism (6) for scraping the surface of the material roll to control the material composition; A winding mechanism (7) for winding the material roll onto the core shaft; The unwinding mechanism (1), the buffer mechanism (2), the deviation-correcting mechanism (3), the tension control mechanism (4), the heating mechanism (5), the scraping mechanism (6) and the rewinding mechanism (7) are sequentially arranged on the frame base (8) along the material roll transmission direction, and are all electrically connected to the PLC control unit, and the PLC control unit coordinates and controls the actions of each mechanism.

2. The rolling device according to claim 1, characterized in that The unwinding mechanism (1) comprises a tensioning shaft (1-1) and a driving motor (1-2); The tensioning shaft (1-1) can be radially expanded to fix the material roll; The drive motor (1-2) is in transmission connection with the tensioning shaft (1-1) and is used to drive unwinding, and the drive motor (1-2) is controlled by the control unit and can be dynamically adjusted according to a feedback signal from the buffer mechanism (2).

3. The rolling device according to claim 1, characterized in that The buffer mechanism (2) comprises a bracket, a guide wheel (2-1), a fixed wheel (2-3), a floating wheel (2-2), a position detection element and a counterweight wheel (2-4); The floating wheel (2-2) is movably arranged on the bracket in a vertical direction; The counterweight wheel (2-4) is connected to the floating wheel (2-2) and is used to provide a constant downward pulling force to the floating wheel (2-2); The material roll passes around the guide wheel (2-1), the fixed wheel (2-3) and the floating wheel (2-2) in a circuitous path; The position detection element is a magnetic grid (2-5) for detecting the real-time position of the floating wheel (2-2) and generating a signal; The floating wheel (2-2) moves up and down according to the change in the tension of the material roll, and its position signal is fed back to the PLC control unit. The PLC control unit dynamically adjusts the unwinding speed of the unwinding mechanism (1) according to the signal to maintain the stability of the material roll tension.

4. The rolling device according to claim 1, characterized in that The deviation correction mechanism (3) comprises a first deviation correction unit, a second deviation correction unit and a deviation correction drive component (3-1); The first deviation-correcting unit and the second deviation-correcting unit are arranged at intervals along the traveling direction of the web; The first deviation-correcting unit and the second deviation-correcting unit each comprise a fixed roller (3-3) and a floating roller (3-2), wherein the floating roller (3-2) is movable relative to the fixed roller (3-3) to adjust a clamping gap between the two for the material feed roll to pass through; The deflection correction drive assembly (3-1) is connected to the first deflection correction unit and / or the second deflection correction unit, and is used to drive the floating roller (3-2) to move so as to adjust the width of the clamping gap.

5. The rolling device according to claim 1, characterized in that The tension control mechanism (4) comprises a pressure regulating roller (4-2), a pressure sensor (4-3) and a tension control drive assembly (4-4); The tension control drive assembly (4-4) is capable of adjusting the height of the pressure regulating roller (4-2); The pressure sensor (4-3) is used to detect the actual pressure value applied by the pressure regulating roller (4-2) to the material roll; The signal of the pressure sensor (4-3) is fed back to the PLC control unit, and the PLC control unit adjusts the height of the pressure regulating roller (4-2) by adjusting the output of the tension control drive component (4-4), thereby adjusting the pressure of the material roll to maintain constant tension of the material roll.

6. The rolling device according to claim 1, characterized in that The heating mechanism (5) comprises an electric heating blower (5-1) and a heat-insulating cover (5-2); The heat-insulating cover (5-2) has a passage for the material supply roll to pass horizontally; The electric heating blower (5-1) is arranged inside the heat-insulating cover (5-2) and is used to generate hot air; The heating mechanism (5) is connected to the PLC control unit, which can realize the setting, control and real-time monitoring of the heating temperature.

7. The rolling device according to claim 1, characterized in that The scraping mechanism (6) comprises: An adjustment component is used to control the scraping depth, thereby controlling the amount of material scraped from the surface of the material roll; the adjustment component includes a translation block (6-4) and a lifting block (6-6), the translation block (6-4) abuts against the lifting block (6-6), and when the translation block (6-4) moves toward the lifting block (6-6), an upward force is generated on the lifting block (6-6) at the abutting position; A scraping disc (6-1) is provided on the lifting block (6-6) and is capable of scraping the surface of the material roll; The scraping drive assembly (6-2) is connected to the translation block (6-4) and drives the translation block (6-4) to translate.

8. The rolling device according to claim 7, characterized in that: The scraping mechanism (6) further comprises a digital dial indicator (6-3) for displaying the feed depth of the scraping disc (6-1).

9. The rolling device according to claim 1, characterized in that: The winding mechanism (7) comprises a chuck (7-3), a servo motor (7-4), a top cylinder (7-2) and a floating top (7-1); The chuck (7-3) is used to clamp the core shaft and is driven to rotate by the servo motor (7-4); The floating center (7-1) is arranged opposite to the chuck (7-3) and is driven by the center cylinder (7-2) to move axially to tighten or loosen the workpiece; The servo motor (7-4) is controlled by the PLC control unit and is used to control the winding speed and torque.

10. The rolling device according to claim 9, characterized in that: The winding mechanism (7) further comprises a lifting cylinder (7-5) capable of rising and falling relative to the frame base (8); the lifting cylinder (7-5) is arranged between the chuck (7-3) and the floating top (7-1); a lifting roller (7-6) is provided on the top of the lifting cylinder (7-5) for lifting when the roll is divided or the material tail is reached to assist in tensioning the roll.

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