Controllable monofilament stretching device

Abstract

The utility model discloses a controllable single filament stretching device, including case, control circuit, heating roller group, cooling roller group and variable damping roller. The both sides of case are equipped with input and output, in the internal processing chamber, heating roller group heats to silk line, and cooling roller group cools to silk line, and the guidance speed of cooling roller group is greater than heating roller group. Variable damping roller is arranged between heating roller group and cooling roller group, and it includes roller shaft, rotating excess roller surface body and magnetorheological liquid type damping adjusting structure. Through the coordination adjustment heating and cooling temperature, the damping size of roller group speed and variable damping roller, accurate control silk line stretch forming specification. The utility model improves the control precision and forming quality of silk line stretching, and the structure is reasonable, and the operation maintenance is convenient, is applicable to the high accuracy stretching shaping in single filament production.

Description

Technical Field

[0001] This utility model relates to the field of monofilament production equipment technology, and in particular to a controllable monofilament stretching device. Background Technology

[0002] The stretching device plays an important role in the production of monofilaments. Through mechanical stretching and heat treatment, the molecules or grains inside the monofilament are arranged in an orderly manner along the direction of force, thereby significantly improving the strength, uniformity, dimensional stability and performance of the filament. It is one of the key processes in transforming monofilaments from their initial form into functional materials with practical value.

[0003] Existing stretching equipment generally consists of multiple guide rollers, each with a different rotational speed. The stretching of the yarn is achieved through the speed difference. It also has built-in heating and cooling devices to heat the yarn during the stretching process and then cool and shape the stretched yarn. In addition, there are adjustable tension rollers. By adjusting the degree of expansion of the yarn by the tension rollers, the thickness of the formed yarn can be further adjusted.

[0004] Traditional stretching equipment suffers from poor control precision, which can easily lead to uneven yarn formation and inconsistent strength. Therefore, it is necessary to improve it. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a controllable monofilament stretching device that replaces the tension roller with a variable damping roller, thereby improving the control precision of the stretching process and further enhancing the forming quality of the filament.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a controllable monofilament stretching device, including a control circuit and a chassis. An input port and an output port are respectively opened on both sides of the chassis. A processing chamber is provided inside the chassis. A heating roller assembly is provided on the side of the processing chamber near the input port. The heating roller assembly includes at least one heating roller unit and a heating roller drive device. Each heating roller unit is driven and connected to the heating roller drive device. Each heating roller unit has a heating device inside. A cooling roller assembly is provided on the side of the processing chamber near the output port. The cooling roller assembly includes at least one cooling roller unit and a cooling roller drive device. Each cooling roller unit is driven and connected to the cooling roller drive device. Each cooling roller unit has a cooling device inside. The device features a cooling roller group with a guiding speed greater than that of the heating roller group. A variable damping roller is positioned between the heating and cooling roller groups. The target yarn passes sequentially through the heating roller group, the variable damping roller, and the cooling roller group. The variable damping roller includes a roller shaft and a transition roller surface rotatably mounted on the roller shaft. A magnetorheological damping adjustment structure is provided between the transition roller surface and the roller shaft to adjust the damping magnitude between them. The heating roller drive device, each heating device, the cooling roller drive device, each cooling device, and the damping adjustment structure are electrically connected to a control circuit. By adjusting the guiding speed and operating temperature between the heating and cooling roller groups, as well as the damping magnitude of the variable damping roller, the yarn forming specifications can be controlled.

[0007] In a further technical solution, the damping adjustment structure includes a fixed magnetic cylinder, which is fixedly installed on the roller shaft. An excitation circuit is located inside the fixed magnetic cylinder and connected to a control circuit via wires. Multiple grooves are evenly distributed on the surface of the fixed magnetic cylinder, and each groove contains an excitation coil, which is connected to the excitation circuit. Bearing supports are located on both sides of the transition roller surface, and a bearing unit is fixedly installed at the center of each bearing support. The inner ring of the bearing unit is fitted onto the roller shaft to achieve rotational engagement between the transition roller surface and the roller shaft. The middle of the inner wall of the transition roller surface... A magnetically conductive inner shell is securely mounted in position. The magnetically conductive inner shell rotates synchronously with the transition roller surface. A non-magnetically conductive isolation ring is provided on each side of the magnetically conductive inner shell. The outer ring of the isolation ring is fixed to the magnetically conductive inner shell, and a rotary sealing ring is sandwiched between the inner ring of the isolation ring and the roller shaft. The surface of the fixed magnetic cylinder, the inner wall of the magnetically conductive inner shell, and the inner walls of the isolation rings on both sides surround and form an airtight filling space. The filling space is filled with magnetorheological fluid. By adjusting the magnetic field strength generated by each excitation coil, the viscosity of the magnetorheological fluid is adjusted to adjust the rotational damping between the transition roller surface and the roller shaft.

[0008] In a further technical solution, a sealing gasket is provided on the outside of the bearing unit, and the sealing gasket is sleeved on the roller shaft.

[0009] In a further technical solution, the surface of the transition roller body is provided with a friction-increasing layer structure, which is made of rubber sheet.

[0010] In a further technical solution, the heating roller group and the cooling roller group are respectively equipped with a working roller group and a roller group drive device with the same structure. The working roller group includes three working roller units with the same outer diameter. The ends of the three working roller units in the same working roller group are respectively equipped with passive gears of the same specification. The three passive gears are meshed and connected in sequence. The roller group drive device includes a roller group drive motor, a drive gear, and a transmission gear. The drive gear is installed on the output shaft of the roller group drive motor. The transmission gear is assembled in any one of the three working roller units. The transmission gear is meshed and connected with the drive gear. Through the transmission cooperation between the three passive gears, the synchronous reverse rotation cooperation of the three working roller units is realized.

[0011] In a further technical solution, the outer diameter of the working roller unit is 15cm-35cm, and the winding length between the working roller group and the target yarn is at least 40cm.

[0012] In a further technical solution, the transmission speed of the heating roller group is 3cm / s-15cm / s, and each heating roller unit of the heating roller group is equipped with a hot oil heating structure inside, and the hot oil heating structure is connected to a hot oil circulation supply device. The surface working temperature of the heating roller unit is 80℃-130℃. The transmission speed of the cooling roller group is 4cm / s-16cm / s, and each cooling roller unit of the cooling roller group is equipped with a water cooling structure inside, and the water cooling structure is connected to a cold water circulation supply device. The surface working temperature of the cooling roller unit is 0℃-6℃.

[0013] In a further technical solution, a secondary housing is provided on the side of the chassis, and the heating roller drive device and the cooling roller drive device are respectively installed in the inner cavity of the secondary housing; a control panel is provided on the top surface of the secondary housing, and the control panel is electrically connected to the control circuit.

[0014] In a further technical solution, a hinged cover is installed at the bottom of the chassis, which flips up to close the upper opening of the processing chamber.

[0015] The advantages of this invention compared to the prior art after adopting the above structure are: 1. By setting a variable damping roller, the internal magnetorheological fluid damping adjustment structure can accurately adjust the damping between the transition roller surface and the roller shaft, which can better control the tension and deformation of the yarn during the stretching process, avoid the problem of poor adjustment accuracy of traditional tension rollers, and significantly improve the control accuracy of yarn forming specifications.

[0016] 2. By adjusting the damping of the variable damping roller, combined with the comprehensive control of parameters such as the guiding speed and working temperature between the heating roller group and the cooling roller group, the stretching process of the yarn can be controlled more precisely, achieving accurate control of the yarn forming specifications and making the shaped yarn more uniform.

[0017] 3. The transition roller surface of the variable damping roller is provided with a friction-increasing layer structure, which can increase the friction between the yarn and the transition roller surface, making the yarn more stable during the stretching process, reducing the possibility of yarn slippage, and further improving the stability of yarn stretching and forming quality. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the heating roller assembly and cooling roller assembly in this utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the heating roller drive device and the cooling roller drive device in this utility model.

[0022] Figure 4 This is a schematic diagram of the variable damping roller in this utility model. Detailed Implementation

[0023] The following are merely preferred embodiments of the present invention and do not limit the scope of protection of the present invention.

[0024] like Figures 1 to 4As shown, a controllable monofilament stretching device includes a control circuit and a housing 1. The housing 1 has an input port 11 and an output port 12 on its two sides. The housing 1 has a processing chamber inside. A heating roller assembly is located on the side of the processing chamber near the input port 11. The heating roller assembly includes at least one heating roller unit 41 and a heating roller drive device 7. Each heating roller unit 41 is driven and connected to the heating roller drive device 7. Each heating roller unit 41 has a heating device inside. A cooling roller assembly is located on the side of the processing chamber near the output port 12. The cooling roller assembly includes at least one cooling roller unit 51 and a cooling roller drive device 8. Each cooling roller unit 51 is driven and connected to the cooling roller drive device 8. Each cooling roller unit 51 has a cooling device inside. The guiding speed is greater than the guiding speed of the heating roller group. A variable damping roller 6 is provided between the heating roller group and the cooling roller group. The target yarn 9 passes through the heating roller group, the variable damping roller 6 and the cooling roller group in sequence. The variable damping roller 6 is provided with a roller shaft 61 and a transition roller surface 60 rotatably mounted on the roller shaft 61. A magnetorheological fluid damping adjustment structure is provided between the transition roller surface 60 and the roller shaft 61 to adjust the damping between the transition roller surface 60 and the roller shaft 61. The heating roller drive device 7, each heating device, the cooling roller drive device 8, each cooling device and the damping adjustment structure are electrically connected to the control circuit. By adjusting the guiding speed and working temperature between the heating roller group and the cooling roller group, as well as the damping of the variable damping roller 6, the forming specifications of the yarn 9 can be controlled.

[0025] By incorporating a variable damping roller 6, whose internal magnetorheological fluid damping adjustment structure can precisely adjust the damping between the transition roller surface 60 and the roller shaft 61, the tension and deformation of the filament 9 during the stretching process can be better controlled. This avoids the problem of poor adjustment accuracy of traditional tension rollers and significantly improves the control accuracy of the filament 9's forming specifications. Through the damping adjustment of the variable damping roller 6, combined with the comprehensive control of parameters such as the guiding speed and working temperature between the heating roller group and the cooling roller group, the stretching process of the filament 9 can be controlled more precisely, achieving accurate control of the filament 9's forming specifications and making the formed filament 9 more uniform in shape.

[0026] The principle is that the heated filament 9 is soft and stretchable. With the traction of the speed-increasing cooling roller group and the damping effect of the variable damping roller 6, the filament 9 is stably stretched. Under the conditions of a fixed operating temperature for the heating and cooling roller groups, and a fixed speed ratio, the greater the damping of the variable damping roller 6, the finer the formed filament 9; the smaller the damping of the variable damping roller 6, the thicker the formed filament 9.

[0027] Specifically, the damping adjustment structure includes a fixed magnetic cylinder 62, which is fixedly installed on the roller shaft 61. An excitation circuit is located inside the fixed magnetic cylinder 62, and the excitation circuit is connected to a control circuit via wires. Multiple grooves are evenly distributed on the surface of the fixed magnetic cylinder 62, and each groove contains an excitation coil 66, which is connected to the excitation circuit. Bearing supports 68 are located on both sides of the transition roller surface 60. A bearing unit 69 is fixedly installed at the center of each bearing support 68, and the inner ring of the bearing unit 69 is fitted onto the roller shaft 61 to achieve rotational engagement between the transition roller surface 60 and the roller shaft 61. A fastener is installed at the center of the inner wall of the transition roller surface 60. A magnetically conductive inner shell 63 is installed, which rotates synchronously with the transition roller surface 60. A non-magnetically conductive isolation ring 64 is provided on each side of the magnetically conductive inner shell 63. The outer ring of the isolation ring 64 is fixed to the magnetically conductive inner shell 63, and a rotating sealing ring 65 is sandwiched between the inner ring of the isolation ring 64 and the roller shaft 61. The surface of the fixed magnetic cylinder 62, the inner wall of the magnetically conductive inner shell 63, and the inner walls of the isolation rings 64 on both sides surround to form an airtight filling space 67. The filling space 67 is filled with magnetorheological fluid. By adjusting the magnetic field strength generated by each excitation coil 66, the viscosity of the magnetorheological fluid is adjusted to adjust the rotational damping between the transition roller surface 60 and the roller shaft 61.

[0028] The damping adjustment structure is a magnetorheological fluid-based adjustment structure. By adjusting the viscosity of the magnetorheological fluid, the rotational damping between the transition roller surface 60 and the roller shaft 61 is adjusted. Compared with traditional variable damping adjustment structures, such as screw or cylinder control structures, the principle is significantly different. Traditional variable damping adjustment structures achieve damping adjustment by increasing the rigid friction acting on the inner wall of the roller surface. After long-term use, wear can easily affect the damping adjustment accuracy. In addition, there is a large mechanical delay and extremely high requirements for concentricity, and the damping feedback is prone to unevenness, resulting in inconsistent wire thickness 9. The magnetorheological fluid-based adjustment structure solves the shortcomings of traditional variable damping structures. At the same time, it replaces the poor accuracy of traditional tension roller adjustment, significantly improving the control accuracy of the wire 9 forming specifications.

[0029] Specifically, a sealing gasket 681 is provided on the outside of the bearing unit 69, and the sealing gasket 681 is sleeved on the roller 61.

[0030] Specifically, the surface of the transition roller body 60 is provided with a friction-increasing layer structure, which is selected from a rubber sheet layer 601. The friction-increasing layer structure on the surface of the transition roller body 60 of the variable damping roller 6 can increase the friction between the yarn 9 and the transition roller body 60, making the yarn 9 more stable during the stretching process, reducing the possibility of the yarn 9 slipping, and further improving the stretching stability and forming quality of the yarn 9.

[0031] Specifically, the heating roller group and the cooling roller group 61 are respectively equipped with working roller groups and roller group drive devices with the same structure. The working roller group includes three working roller units with the same outer diameter. The ends of the three working roller units in the same working roller group are respectively equipped with passive gears 71 of the same specification. The three passive gears 71 are meshed and connected in sequence. The roller group drive device includes a roller group drive motor 74, a drive gear 73 and a transmission gear 72. The drive gear 73 is installed on the output shaft of the roller group drive motor 74. The transmission gear 72 is assembled on any one of the three working roller units. The transmission gear 72 is meshed and connected with the drive gear 73. Through the transmission cooperation between the three passive gears 71, the synchronous reverse rotation cooperation of the three working roller units is realized.

[0032] Specifically, the outer diameter of the working roller unit is 20cm, and the winding length between the working roller group and the target yarn 9 is 60cm.

[0033] Specifically, the heating roller group has a transmission speed of 10 cm / s, and each heating roller unit 41 of the heating roller group has an internal hot oil heating structure. The hot oil heating structure is connected to an external hot oil circulation supply device, and the surface working temperature of the heating roller unit 41 is 120℃. The cooling roller group has a transmission speed of 12 cm / s, and each cooling roller unit 51 of the cooling roller group has an internal water cooling structure. The water cooling structure is connected to an external cold water circulation supply device, and the surface working temperature of the cooling roller unit 51 is 2℃.

[0034] Specifically, a secondary housing 2 is provided on the side of the housing 1, and the heating roller drive device 7 and the cooling roller drive device 8 are respectively installed in the inner cavity of the secondary housing 2; a lifting bracket 70 is provided on the side wall of the housing 1, inside the secondary housing 2, the roller group drive motor is fixed to the top of the lifting bracket 70, and the drive gear 73 is located at the bottom of the lifting bracket 70; a control panel 3 is provided on the top surface of the secondary housing 2, and the control panel 3 is electrically connected to the control circuit.

[0035] Specifically, a flip cover 19 is mounted on the bottom of the chassis 1 via a hinge, and the flip cover 19 flips to close the upper opening of the processing chamber.

[0036] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A controllable monofilament stretching device, comprising a control circuit and a housing, wherein an input port and an output port are respectively opened on both sides of the housing, and a processing chamber is provided inside the housing, characterized in that: A heating roller assembly is located on the side of the processing chamber near the input port. The heating roller assembly includes at least one heating roller unit and a heating roller drive device. Each heating roller unit is driven and connected to the heating roller drive device, and each heating roller unit has a heating device inside. A cooling roller assembly is located on the side of the processing chamber near the output port. The cooling roller assembly includes at least one cooling roller unit and a cooling roller drive device. Each cooling roller unit is driven and connected to the cooling roller drive device, and each cooling roller unit has a cooling device inside. The guiding speed of the cooling roller assembly is greater than that of the heating roller assembly. A variable damping roller is located between the heating roller assembly and the cooling roller assembly. The target yarn passes sequentially through the heating roller assembly, the variable damping roller, and the cooling roller assembly. The variable damping roller includes a roller shaft and a transition roller surface rotatably mounted on the roller shaft. A magnetorheological damping adjustment structure is provided between the transition roller surface and the roller shaft to adjust the damping magnitude between the transition roller surface and the roller shaft. The heating roller drive device, each heating device, the cooling roller drive device, each cooling device, and the damping adjustment structure are electrically connected to the control circuit. By adjusting the guiding speed and working temperature between the heating roller group and the cooling roller group, as well as the damping magnitude of the variable damping roller, the specifications of the yarn forming can be controlled.

2. The controllable monofilament stretching device according to claim 1, characterized in that: The damping adjustment structure includes a fixed magnetic cylinder, which is fixedly installed on the roller shaft. An excitation circuit is located inside the fixed magnetic cylinder and connected to the control circuit via wires. Multiple grooves are evenly distributed on the surface of the fixed magnetic cylinder, and each groove contains an excitation coil, which is connected to the excitation circuit. Bearing supports are located on both sides of the transition roller surface. A bearing unit is fixedly installed at the center of each bearing support, and the inner ring of the bearing unit is fitted onto the roller shaft to achieve rotational engagement between the transition roller surface and the roller shaft. The middle of the inner wall of the transition roller surface... A magnetically conductive inner shell is securely mounted in position. The magnetically conductive inner shell rotates synchronously with the transition roller surface. A non-magnetically conductive isolation ring is provided on each side of the magnetically conductive inner shell. The outer ring of the isolation ring is fixed to the magnetically conductive inner shell, and a rotary sealing ring is sandwiched between the inner ring of the isolation ring and the roller shaft. The surface of the fixed magnetic cylinder, the inner wall of the magnetically conductive inner shell, and the inner walls of the isolation rings on both sides surround and form an airtight filling space. The filling space is filled with magnetorheological fluid. By adjusting the magnetic field strength generated by each excitation coil, the viscosity of the magnetorheological fluid is adjusted to adjust the rotational damping between the transition roller surface and the roller shaft.

3. The controllable monofilament stretching device according to claim 2, characterized in that: A sealing gasket is also provided on the outside of the bearing unit, and the sealing gasket is sleeved on the roller shaft.

4. The controllable monofilament stretching device according to claim 3, characterized in that: The surface of the transition roller body is provided with a friction-increasing layer structure, which is made of rubber sheet.

5. The controllable monofilament stretching device according to claim 1, characterized in that: The heating roller group and the cooling roller group are respectively equipped with a working roller group and a roller group drive device with the same structure. The working roller group includes three working roller units with the same outer diameter. The ends of the three working roller units in the same working roller group are respectively equipped with passive gears of the same specification. The three passive gears are meshed and connected in sequence. The roller group drive device includes a roller group drive motor, a drive gear and a transmission gear. The drive gear is installed on the output shaft of the roller group drive motor. The transmission gear is assembled in any one of the three working roller units. The transmission gear is meshed and connected with the drive gear. Through the transmission cooperation between the three passive gears, the synchronous reverse rotation cooperation of the three working roller units is realized.

6. The controllable monofilament stretching device according to claim 5, characterized in that: The outer diameter of the working roller unit is 15cm-35cm, and the winding length between the working roller group and the target yarn is at least 40cm.

7. A controllable monofilament stretching device according to claim 6, characterized in that: The heating roller assembly has a transmission speed of 3cm / s-15cm / s. Each heating roller unit in the heating roller assembly has an internal hot oil heating structure, and the hot oil heating structure is externally connected to a hot oil circulation supply device. The surface working temperature of the heating roller unit is 80℃-130℃. The cooling roller assembly has a transmission speed of 4cm / s-16cm / s. Each cooling roller unit in the cooling roller assembly has an internal water cooling structure, and the water cooling structure is externally connected to a cold water circulation supply device. The surface working temperature of the cooling roller unit is 0℃-6℃.

8. The controllable monofilament stretching device according to claim 1, characterized in that: The side of the chassis is provided with a secondary box, and the heating roller drive device and the cooling roller drive device are respectively installed in the inner cavity of the secondary box; the top surface of the secondary box is provided with a control panel, which is electrically connected to the control circuit.

9. A controllable monofilament stretching device according to claim 8, characterized in that: The bottom of the chassis is fitted with a hinged cover that flips up to close the upper opening of the processing chamber.

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