CN118107163A - Tension control device for fiber winding process - Google Patents
Tension control device for fiber winding process Download PDFInfo
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- CN118107163A CN118107163A CN202410024884.8A CN202410024884A CN118107163A CN 118107163 A CN118107163 A CN 118107163A CN 202410024884 A CN202410024884 A CN 202410024884A CN 118107163 A CN118107163 A CN 118107163A
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Abstract
A tension control device for a fiber winding process belongs to the technical field of composite material winding and forming, and comprises an air pressure control module, a pulley position control module, a creel tension mechanism and a glue Chi Zhangli mechanism. The air pressure control module is used for adjusting air pressure of the air cylinder and generating pulling force matched with the required fiber tension. The pulley position control module controls the movable pulley which moves synchronously with the air cylinder to be always at the balance position, so that the fiber is ensured to be in a tight state. The creel tension mechanism is positioned in the creel and is used for controlling the tension of the fiber yarn in the creel. The glue Chi Zhangli mechanism is positioned behind the glue dipping device and is used for controlling the tension of the yarn discharged after the fiber is dipped and the tension of yarn returned by the yarn nozzle. The invention has the advantages that firstly, the pulley moves linearly, the relation between the tension and the tension of the cylinder is not changed along with the position of the pulley, the fluctuation of the tension is smaller, and secondly, the tension of the fiber wound around the doffing point can be stabilized near a given value by adopting a two-stage tension control mode when the yarn is obtained and received.
Description
Technical Field
The invention belongs to the technical field of composite material winding and forming, and relates to a tension control device for a fiber winding process.
Background
The fiber winding technology is one of the most common technologies for resin matrix composite material molding technology, has the characteristics of low cost, high specific strength, high production efficiency and the like, and is widely applied to the fields of pressure vessels, transmission devices, high-pressure pipelines, aerospace and the like. Winding tension is one of the most important process parameters in the winding forming process, and directly determines the quality of the wound product, including its weight, mechanical strength and stiffness, and resonant frequency. Therefore, winding tension control is one of core technologies of fiber winding, and a tension control device is also an essential key device of a fiber winding machine.
The current mainstream winding tension control schemes can be divided into three types: the first is mechanical tension control, typically using springs or weight weights, which tend to have relatively low control accuracy and are typically used only in glass fiber winding processes where winding tension is not as high. The second is that the sensor negative feedback type adopts PID controller to adjust the rotation speed or torque of servo motor in real time according to the detected tension, so that the controlled tension is stabilized near the set value, the mode can reach very high control precision, but the parameter adjustment process is complex, the control precision is greatly affected by the precision of the sensor, and the problems of unstable tension control, easy yarn breakage and the like still exist in high-speed winding. The third is a pneumatic-electric tension control system, which introduces a swing arm with a guide roller, a constant-pressure cylinder is arranged on the swing arm, and when the swing arm is at a balance position, the pressure provided by the cylinder and the tension provided by the fiber are balanced on the guide roller, so that the tension of the fiber can be regulated by regulating the air pressure of the cylinder as long as the swing arm is controlled at a balance angle. This translates the control of tension into control of swing arm angle and cylinder pressure. The tension control method is different from fiber tension, the angle of the swing arm is not easy to mutate, and the tension control is more stable and more convenient to use due to the buffer effect of the air cylinder, but because the relationship model of air pressure and tension is related to the swing angle of the swing arm in the swing process of the swing arm, the tension is larger along with the swing fluctuation of the swing arm in actual winding, the approximate range of the tension can only be adjusted according to experience, and the accurate control of the tension can not be realized. In addition, the tension control device is only effective for the tension of the yarn outlet, when the fiber passes through the gumming device, the tension can deviate due to the action of viscous force of the gum surface, and the existing pneumatic tension control device still lacks accurate control of the tension after gumming.
Disclosure of Invention
The invention aims to provide a tension control device for fiber winding, which solves the problems of inaccurate tension control and large tension fluctuation in the winding process of the existing winding tension control system by applying two-stage tension control on a creel and a gum dipping outlet.
The technical scheme adopted by the invention is a tension control device for filament winding, which comprises the following parts: the device comprises an air pressure control module, a pulley position control module, a creel tension mechanism and a glue Chi Zhangli mechanism.
The air pressure control module adjusts the air pressure of an air cylinder in the tension mechanism according to the tension output by the requirement, so that the tension is matched with the tension direction of the required fiber. The pulley position control module controls the movable pulley which moves synchronously with the air cylinder and the displacement sensor to be always in a balance position, so that the fiber is always in a tense state. The creel tension mechanism is positioned in the creel and is used for controlling the tension of the fiber yarn in the creel. The glue Chi Zhangli mechanism is positioned behind the glue dipping device and is used for controlling the tension of the yarn discharged after the fiber is dipped and the tension of yarn returned by the yarn nozzle.
The air pressure control module comprises: the system comprises an upper computer, a PLC controller, a digital-to-analog converter and an electric proportional valve.
The upper computer sends the required tension value to the PLC controller in the form of EtherCAT or MODBUS bus according to the winding process, the PLC controller calculates the air pressure required to be provided for the air cylinder according to the tension value required to be output, and in the tension mechanism designed by the invention, the tension of the air cylinder and the tension of the fiber always have a definite relation at any position. For the creel tension mechanism, the tension of the air cylinder is 2 times of the fiber tension, and for the glue Chi Zhangli mechanism, the tension of the air cylinder is 2 times of the fiber tension and the gravity of the pulley is added, so that the required air pressure can be calculated by a mechanical balance formula. The diameter of the cylinder barrel of the cylinder at the creel is the same as that of the cylinder barrel of the cylinder at the glue pool, and the diameter of the piston rod is the same. Assuming that the tension of the wound fiber needs to be controlled to be T, the diameter of a cylinder barrel of a given cylinder is D, the diameter of a piston rod is D, the mass of a pulley of the glue Chi Zhangli mechanism is m p, the mass of a piston rod is m q, and the gravity acceleration is g, the cylinder air pressure P 1 of the creel tension mechanism can be expressed as:
the cylinder pressure P 2 of the glue Chi Zhangli mechanism may be expressed as:
The control voltage required by the electric proportional valve is further calculated according to the control voltage-air pressure linear relation of the electric proportional valve, the digital-to-analog converter outputs the corresponding control voltage to the electric proportional valve, the output air pressure of the proportional valve can be ensured to be constant, and the tension provided by the air cylinder is ensured to be constant.
The pulley position control module includes: linear guide, displacement sensor, voltage converter, voltage comparator and servo motor unit (including driver, encoder and servo motor).
The pulley position control module determines the deviation of the current pulley position and the balance position according to the return signal of the displacement sensor, and the voltage conversion module is used for converting the output voltage of the displacement sensor to 0-5V, wherein the highest voltage is required to be lower than the maximum analog input voltage (10V) of the servo driver. One path of sensor signals passing through the voltage converter controls the enabling of the servo driver through the voltage comparator to prevent yarn breakage and idling, and the other path of sensor signals is directly provided for the servo driver to drive the servo motor. When winding yarn, the pulley moves forwards along the linear guide rail, the output voltage of the voltage converter is increased, and the driving motor rotates forwards to unwind, so that the pulley returns to the balance position. When winding yarn, the pulley moves backwards along the linear guide rail, the output voltage of the voltage converter is reduced, the driving motor reversely winds, and the pulley is pulled back to the balance position. In the working process of the position control module, the air cylinder is always in a constant tension state and the fiber is in a tight state, so that the tension of the fiber is kept unchanged. The pulley position control module is designed with two considerations, namely, the first is that the fiber tension calculation model is simple, namely, the fiber tension is always half of the tension of the cylinder; and secondly, the system is connected in full hardware, and additional software calculation is not needed, so that the system is not influenced by CPU instruction period and signal acquisition frequency, and the reaction speed of the system is accelerated.
The creel tension mechanism comprises: the device comprises an air expansion shaft, a fiber yarn roll, a reversing guide roller, a magnetic ring, a fixed pulley, a movable pulley, a displacement sensor and an air cylinder.
The inflatable shaft is used for fixing the fiber yarn roll, and the fiber drawn out from the fiber yarn roll passes through the reversing guide roller and then passes through the magnetic ring, wherein the reversing guide roller has two functions: on one hand, the stretching distance of the fiber is prolonged, so that the fiber at the fixed pulley can still relatively less move even when the fiber moves back and forth on a large range on the surface of the fiber roll; on the other hand, makes the overall creel layout relatively compact. The fiber passes through the fixed pulley and then passes through a movable pulley and an output fixed pulley to be discharged. Wherein the fixed pulleys and the movable pulleys are completely consistent in specification, the fixed pulleys are arranged in a high-low mode, the input fixed pulleys are arranged at the upper position, and the output fixed pulleys are arranged at the lower position. The common tangent of the section circle of the movable pulley and the section circle of the input fixed pulley and the common tangent of the section circle of the output fixed pulley are in the horizontal direction, so that the fiber direction is always consistent with the movement direction of the air cylinder, the force balance relationship can not be changed along with the position of the movable pulley, namely, when the movable pulley is in a balance state, the tensile force generated by the air cylinder is always twice of the fiber tension, wherein the air pressure of the air cylinder is provided by an electric proportional valve 1 in an air pressure control system, and the size is P 1.
The glue Chi Zhangli mechanism comprises an air cylinder, a movable pulley and a reversing guide roller.
The fiber after gum dipping in the gum pool is led to the vertical upward direction through the input reversing guide roller, led to the vertical downward direction after passing through the movable pulley, and finally is discharged through the output reversing guide roller. The two reversing guide rollers are arranged in tandem and are similar to the pulley arrangement of a creel tension mechanism, the common tangent line of the section circle of the movable pulley and the section circle of the input reversing guide roller and the common tangent line of the section circle of the output reversing guide roller are all in the vertical direction, so that the balance relation of force is ensured not to change along with the position of the movable pulley, namely when the movable pulley is in a balance state, the tensile force generated by the air cylinder is always twice of the fiber tension, the gravity of the fixed pulley and the piston connecting rod of the air cylinder is externally applied, the air pressure of the air cylinder is provided by an electric proportional valve 2 in an air pressure control system, and the air pressure is P 2.
The beneficial effects of the invention are as follows: the pulley driven by the air cylinder is fixed on the linear guide rail slide block, so that the direction of the fiber is always the same as that of the guide rail and the air cylinder, and the balance condition of the movable pulley is always unchanged, so that the tension born by the fiber is irrelevant to the position of the pulley under a given air pressure, the problem of large tension fluctuation of the traditional swing arm type pneumatic-electric tension control system is solved, and the accurate control of the fiber tension can be realized; the primary tension control is added after the fiber passes through the gumming device, and the tension output by the secondary tension control is always near the given tension by giving proper air pressure, so that the glue Chi Zhangli mechanism can still provide the same force for yarn collection as the given tension when the winding belt head shell fiber needs to be recovered. By using the scheme of the invention, the tension of yarn discharging and yarn collecting can be ensured to be always kept near the given tension in the filament winding process of the core mould with the seal head shell.
Drawings
FIG. 1 is a schematic diagram of a pneumatic control module according to the present invention
FIG. 2 is a schematic diagram of a position control module according to the present invention
FIG. 3 is a three-dimensional view of a creel tension mechanism in the present invention
FIG. 4 is a three-dimensional view of the adhesive Chi Zhangli mechanism of the present invention
In the figure, 3-1, total mounting substrate; 3-2, a guide rail mounting substrate; 3-3, an inflatable shaft; 3-4, fiber rolls; 3-5, fiber bundles; 3-6, reversing guide rollers; 3-7, a magnetic ring; 3-8-1, an input fixed pulley and a base; 3-8-2, an output fixed pulley and a base; 3-9, a movable pulley; 3-10, air cylinder; 3-11, a displacement sensor; 3-12, synchronous connecting plates; 3-13 guide rails.
4-1, A gum dipping roller; 4-2, a glue extrusion guide roller; 4-3-1, inputting a reversing guide roller; 4-3-2, outputting a reversing guide roller; 4-4, vertical supports; 4-5, a cylinder upper base plate; 4-6, a cylinder lower base plate; 4-7, an air cylinder; 4-8, a movable pulley; 4-9, fiber bundles; 4-10-1, large quick clamp; 4-10-2, small quick clamp.
Detailed Description
The invention will be further described with reference to the drawings and examples.
The orientations referred to in the present specification are all shown in the drawings, and represent only relative positional relationships, and do not represent absolute positional relationships.
FIG. 1 is a schematic diagram of an air pressure control module in the invention, which comprises an upper computer, a PLC controller, a digital-to-analog converter and an electric proportional valve.
The upper computer runs a total winding control program, and a tension instruction is issued according to the requirement of a winding process, and the tension instruction can be sent to the PLC in the form of an EtherCAT or MODBUS bus. The PLC is responsible for converting the required air pressure value according to the mechanical structure information (including the diameter D of a cylinder barrel, the diameter D of a piston connecting rod, the mass m p of a movable pulley, the diameter m q of the piston connecting rod and the like) of a given tension and tension control module, wherein the air pressure P 1 of the cylinder at the creel is as follows:
The air pressure P 2 of the air cylinder at the glue pool is as follows:
The PLC controller program further calculates the digital quantity N 2 needed by the digital-to-analog converter 2 at the digital-to-analog converter 1 at the creel and the glue pool of the digital quantity N 1 according to the precision N of the digital-to-analog converter, the maximum output voltage V cmap, the maximum input voltage V pmax of the proportional valve and the corresponding maximum output air pressure P max:
And then the digital-to-analog conversion module converts the digital quantity into an analog voltage signal, and the analog voltage signal drives the electric proportional valve to output corresponding air pressure, so that the air cylinder is in a constant pressure state, and the fiber is ensured to be in constant tension.
In this implementation, the upper computer may be a motion controller, a numerical control system, or an industrial personal computer that runs a winding program. The digital-to-analog converter can be a module of the PLC or an external module. The electric proportional valve is a high-precision electric proportional valve with a feedback loop in the interior for supporting analog input, and is charged and discharged in real time according to the relation between given air pressure and measured air pressure.
Fig. 2 shows a control block diagram of the pulley position control module of the present invention, including a displacement sensor, a voltage converter, a voltage comparator, a servo driver, an encoder and motor, a fiber, a traveling block, etc.
In the implementation, the displacement sensor adopts an electronic ruler for detecting the specific position of the pulley, adopts a 24V power supply for power supply, and changes the internal resistance value caused by displacement change, thereby causing the change of output voltage. The displacement sensor is arranged in parallel with the air cylinder and is connected with the pulley together, so that the pulley always has a reverse force to resist the fiber tension.
The output of the displacement sensor is consistent with the output range of the industrial switching power supply, namely 0-24V. The voltage converter maps a voltage of 0-24V to 0-5V, the maximum voltage being less than the maximum input voltage allowed by the servo driver (10V).
The servo driver is set in a speed control mode, namely the output rotating speed is determined by the magnitude of analog quantity input, a certain bias is added to the analog quantity input of the servo driver in order to ensure that the balance position of the pulley is positioned at the middle position of the electronic ruler instead of one end of the electronic ruler, and the sign of the bias is determined by the direction parameters of the motor.
In this embodiment, the voltage comparator module compares the output of the voltage converter with a given small voltage value (typically set to 0.5V or less), and determines whether the position of the displacement sensor is at the bottom, i.e., the yarn-break state. If the yarn is in a yarn breaking state, the voltage comparator drives the relay to be disconnected, the enabling of the servo driver is cut off, the uncontrolled reverse rotation of the servo motor is prevented, and the purpose of protecting the motor is achieved.
As shown in fig. 3, which is a three-dimensional view of a creel tension mechanism in the present invention, in the embodiment shown in fig. 3, the creel tension mechanism includes a total mounting substrate 3-1, a rail mounting substrate 3-2, an inflatable shaft 3-3, a fiber roll 3-4, a fiber bundle 3-5, a reversing guide roller 3-6, a magnetic ring 3-7, a fixed pulley and a base 3-8, a movable pulley 3-9, a cylinder 3-10, a displacement sensor 3-11, a synchronous connecting plate 3-12, and a rail 3-13.
In the implementation, an inflatable shaft 3-3 and a bearing are fixed on a total mounting substrate 3-1 in a matching way, an outer-drawing type fiber roll 3-4 is mounted on the inflatable shaft, a fiber bundle 3-5 discharged from the fiber roll firstly changes direction through a reversing guide roller 3-6, the reversing guide roller is connected to the total mounting substrate 3-1 through the bearing, and then the fiber bundle enters a magnetic ring 3-7 again for limiting, so that reciprocating movement is prevented.
The present embodiment requires two fixed pulleys 3-8-1 and 3-8-2 for restricting the direction of the fiber bundle 3-5 so as to be parallel to the direction of movement of the cylinder 3-10, and the fixed pulley 3-8 is mounted on the total mounting base plate 3-1 together with its base by bolts. The movable pulley 3-9, the cylinder 3-10, the displacement sensor 3-11 and the guide rail 3-13 are mounted on the guide rail mounting base plate 3-2. The guide rail mounting base plate 3-2 is fixed on the total mounting base plate 3-1 in a bolt mode, the upper cylinder 3-10 is fixed through an L-shaped foot rest, and the displacement sensor 3-11 is compacted and fixed through a mounting bracket. In order to ensure that the movable pulley 3-9 can synchronously move with the air cylinder 3-10 and the displacement sensor 3-11 under the pulling action of the fiber bundle 3-5, a synchronous connecting plate 3-12 is used for connecting a piston rod of the air cylinder 3-10 and a stretching rod of the displacement sensor 3-11, and the movable pulley 3-9 is fixed on the synchronous connecting plate 3-12.
The installation of the implementation needs that the fixed pulley 3-8 and the movable pulley 3-9 are positioned at the same height relative to the total installation base plate 3-1, so that the fiber bundles 3-5 are not twisted. The common tangent of the section circle of the movable pulley 3-9 and the section circle of the input fixed pulley 3-8-1 and the common tangent of the section circle of the output fixed pulley 3-8-2 are all in the horizontal direction, so as to ensure that the tension direction of the fiber bundle 3-5 is always in the same straight line with the direction of the piston rod of the air cylinder 3-10.
The air pressure of the cylinders 3-10 in this embodiment is provided by the output of the electro-proportional valve 1.
As shown in fig. 4, which is a three-dimensional view of the glue Chi Zhangli mechanism of the present invention, in the embodiment shown in fig. 4, three sets of tensioning mechanisms are provided, only one of which is shown as an example. The glue Chi Zhangli mechanism comprises a glue dipping roller 4-1, a glue extruding guide roller 4-2, a reversing guide roller 4-3, a vertical bracket 4-4, an air cylinder upper base plate 4-5, an air cylinder lower base plate 4-6, an air cylinder 4-7, a movable pulley 4-8, a fiber bundle 4-9 and a quick clamp 4-10.
The glue pool of this implementation adopts the dipping type to soak, mainly realized by the glue dipping roller 4-1 and the glue squeezing guide roller 4-2, the both ends of glue dipping roller 4-1 and glue squeezing guide roller 4-2 are all cooperated with the bearing, block in the U type groove of glue pool both sides, glue dipping roller 4-1 uses the big quick clamp 4-10-1 to compress tightly, glue squeezing guide roller 4-2 does not need to be fixed, adopt the stainless steel material of great density, rely on gravity to crowd the glue.
The key of realizing tension control in the implementation is a yarn guiding mechanism consisting of a reversing guide roller 4-3, an air cylinder 4-7 and a movable pulley 4-8. Two ends of the reversing guide roller 4-3 are matched with bearings and clamped in the U-shaped groove, and are tightly pressed by using the small quick clamp 4-10-2. The cylinder 4-7 is fixed with the cylinder lower base plate 4-6 through the cylinder upper base plate 4-5, the cylinder upper base plate 4-5 uses a threaded hole to fix the tail end of the cylinder, and the cylinder lower base plate 4-6 uses a through hole and a nut to fix the head end of the cylinder. The upper base plate 4-5 and the lower base plate 4-6 of the air cylinder are fixed on the vertical support 4-4 by using ship-shaped bolts, and the vertical support 4-4 is made of aluminum profiles. The piston connecting rod of the air cylinder 4-7 is connected with the movable pulley 4-8 through a bracket and a nut.
The installation of the fiber bundle is realized by the fact that the common tangent line of the cross section circle of the reversing guide roller 4-3-1 and the cross section circle of the movable pulley 4-8 is located in the vertical direction, and the cross section circle of the reversing guide roller 4-3-2 and the common tangent line of the cross section circle of the movable pulley 4-8 are located in the vertical direction, namely, the two common tangent lines are consistent with the direction of the piston connecting rod of the air cylinder 4-7, so that the tension direction of the fiber bundle 4-9 is always in the same straight line with the direction of the piston rod of the air cylinder 4-7, and are both in the vertical direction.
The air pressure of the present embodiment cylinder 4-7 is provided by the output of the electro-proportional valve 2.
Claims (5)
1. A tension control device for a filament winding process, characterized by: the tension control device comprises an air pressure control module, a pulley position control module, a creel tension mechanism and a glue Chi Zhangli mechanism.
The air pressure control module calculates air pressure required by the air cylinder at the creel and the air cylinder at the glue pool according to tension required by winding, the cylinder diameter of the air cylinder, the diameter of the piston and the mass of the movable pulley, and generates corresponding analog voltage by using a digital-to-analog converter and inputs the analog voltage to a control end of the electric proportional valve to adjust output air pressure.
The pulley position module uses voltage signals collected by the displacement sensor, uses the voltage signals converted by the voltage converter as feedback and directly inputs the feedback signals into the servo motor in an analog quantity mode, and the feedback signals directly drive the servo motor to rotate positively and negatively to control the movable pulley to be stabilized at a balance position.
The creel tension mechanism is used for controlling the tension of fibers at the creel yarn outlet, the fibers are discharged after passing through the reversing guide roller, the input fixed pulley, the movable pulley and the output movable pulley, the movable pulley is in a balanced state under the action of the tension of the air cylinder and the tension of the fibers, the air pressure of the air cylinder is given, and the tension of the fibers at the creel yarn outlet is determined accordingly.
The tension mechanism of the glue pool is used for controlling the tension of the fiber immersed in the glue pool, the fiber is discharged after passing through the input reversing guide roller, the movable pulley and the output reversing guide roller, the movable pulley is in a balanced state under the action of the tension of the air cylinder, the gravity of the pulley and the air cylinder connecting rod and the tension of the fiber, the air cylinder pressure is given, the mass of the pulley and the air cylinder connecting rod is known, and the tension of the fiber at the yarn discharge position of the glue pool is determined accordingly.
2. A tension control device for a filament winding process as claimed in claim 1, wherein: the air pressure control module comprises: the system comprises an upper computer, a PLC controller, a digital-to-analog converter and an electric proportional valve.
The upper computer gives a tension instruction according to the winding process requirement and sends the tension instruction to the PLC in the form of EtherCAT or MODBUS bus, the PLC calculates the air pressure required to be provided for the air cylinder according to the tension value required to be output, and the required air pressure is calculated by a mechanical balance formula, so that the air cylinder diameter and the piston rod diameter of the air cylinder at the creel are required to be the same as those of the air cylinder diameter at the glue pool for the convenience of calculation. Assuming that the required fiber tension is T, the diameter of the cylinder barrel is D, the diameter of the piston rod is D, the mass of the pulley of the glue Chi Zhangli mechanism is m p, the mass of the piston rod is m q, and the gravity acceleration is g, the air pressure P 1 of the cylinder at the creel can be expressed as:
the air pressure P 2 of the air cylinder at the glue pond can be expressed as:
According to the control voltage-air pressure linear relation of the electric proportional valve, the control voltage required by the electric proportional valve is calculated, the digital-to-analog converter outputs the corresponding control voltage to the electric proportional valve, the output air pressure of the proportional valve can be ensured to be constant, and the tension provided by the air cylinder is ensured to be constant.
3. A tension control device for a filament winding process as claimed in claim 1, wherein: the pulley position control module includes: linear guide, displacement sensor, voltage converter, voltage comparator and servo motor unit (including driver, encoder and servo motor).
The pulley position control module determines the deviation of the current pulley position and the balance position according to the return signal of the displacement sensor, and the voltage conversion module is used for converting the output voltage of the displacement sensor to 0-5V, wherein the maximum voltage is required to be smaller than the maximum input voltage (10V) of the analog quantity of the servo driver. One path of sensor signals passing through the voltage converter passes through the voltage comparator to control the enabling of the servo driver, and yarn breakage and idling are prevented. The other path of the voltage converter directly drives a servo motor to the servo driver, when the yarn is wound, the pulley moves forwards along the linear guide rail, the output voltage of the voltage converter is increased, and the driving motor rotates forwards to unwind, so that the pulley returns to the balance position. When winding yarn, the pulley moves backwards along the linear guide rail, the output voltage of the voltage converter is reduced, the driving motor reversely winds, and the pulley is pulled back to the balance position.
4. A tension control device for a filament winding process as claimed in claim 1, wherein: the creel tension mechanism comprises: the device comprises an air expansion shaft, a fiber yarn roll, a reversing guide roller, a fixed pulley, a movable pulley, a displacement sensor and an air cylinder.
The inflatable shaft is used for fixing the fiber yarn roll, and the fiber drawn out from the fiber yarn roll passes through the reversing guide roller and then passes through the fixed pulley, wherein the reversing guide roller has two functions: on one hand, the stretching distance of the fiber is prolonged, so that the fiber at the fixed pulley can still relatively less move even when the fiber moves back and forth on a large range on the surface of the fiber roll; on the other hand, makes the overall creel layout relatively compact. The fiber passes through the input fixed pulley and then passes through the movable pulley and the output fixed pulley in turn to be discharged. Wherein the specification sizes of the two fixed pulleys and one movable pulley are completely consistent, the fixed pulleys are arranged in a high-low mode, the input fixed pulleys are arranged at the upper part, and the output fixed pulleys are arranged at the lower part. The common tangent of the section circle of the movable pulley and the section circle of the input fixed pulley and the common tangent of the section circle of the output fixed pulley are in the horizontal direction, so that the fiber direction is always consistent with the movement direction of the air cylinder, the force balance relationship can not be changed along with the position of the movable pulley, namely, when the movable pulley is in a balance state, the tension generated by the air cylinder is always twice the fiber tension.
5. A tension control device for a filament winding process as claimed in claim 1, wherein: the glue Chi Zhangli mechanism comprises an air cylinder, a movable pulley and a reversing guide roller.
The fiber coming out of the glue pond is led to the vertical upward direction through the input reversing guide roller, led to the vertical downward direction after passing through the movable pulley, and finally comes out of the yarn through the output reversing guide roller. The two reversing guide rollers are arranged in a tandem mode, the arrangement of the pulleys is similar to that of a creel tension mechanism, the common tangent of the section circle of the movable pulley and the section circle of the input reversing guide roller and the common tangent of the section circle of the output reversing guide roller are in a vertical direction, the balance relation of force is guaranteed not to be changed along with the position of the movable pulley, namely when the movable pulley is in a balance state, the tensile force generated by the air cylinder is always twice the fiber tension, and the gravity of the fixed pulley and the piston connecting rod is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410024884.8A CN118107163A (en) | 2024-01-08 | 2024-01-08 | Tension control device for fiber winding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410024884.8A CN118107163A (en) | 2024-01-08 | 2024-01-08 | Tension control device for fiber winding process |
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| CN118107163A true CN118107163A (en) | 2024-05-31 |
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| CN202410024884.8A Pending CN118107163A (en) | 2024-01-08 | 2024-01-08 | Tension control device for fiber winding process |
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