A high modulus yarn winding forming air pressure constant pressure contact device

Abstract

The utility model discloses a kind of high modulus yarn winding forming's air pressure type constant pressure contact device, it includes yarn winding drum, pressure regulating mechanism, pressure detection component and contact sleeve, the contact sleeve includes multiple arc support sheet and elastic member, the arc support sheet is formed annular contact surface by elastic member and contact with yarn, the pressure detection component detects the pressure condition between yarn and contact sleeve, and with pressure regulating mechanism is linked to adjust, the position of arc support sheet is adjusted by pressure regulating mechanism, to adjust the diameter of contact sleeve, make the pressure between contact sleeve and yarn change, maintain the contact pressure constant between yarn and contact sleeve.The utility model maintains the scheme that yarn contact pressure is constant by air pressure regulation contact sleeve diameter, reaches the effect of ensuring that contact pressure is constant in the yarn winding process, improves winding forming quality.

Description

Technical Field

[0001] This utility model relates to the field of constant pressure control technology for yarn winding, and in particular to a pneumatic constant pressure contact device for winding high modulus yarn. Background Technology

[0002] High-modulus yarns, with their superior properties such as high strength and high rigidity, have been widely used in high-end fields such as aerospace, defense, and sporting goods. These high-end fields have stringent requirements for material performance, and the use of high-modulus yarns has greatly improved the performance and quality of related products, driving the development of these industries. In the aerospace field, they help reduce aircraft weight and improve flight performance; in the defense industry, they enhance the protective capabilities and combat effectiveness of equipment; and in sporting goods, they improve product durability and athletic performance.

[0003] In the winding process of high-modulus yarns, existing technologies mostly employ mechanical pressure control or simple spring pressure control to achieve yarn winding. Mechanical pressure control typically relies on complex mechanical structures to adjust pressure, attempting to control the contact pressure between the winding device and the yarn through a series of transmission components and adjustment devices. Spring pressure control, on the other hand, utilizes the elastic properties of springs, applying and adjusting pressure through the extension and contraction of the spring, and its structure is relatively simpler than that of mechanical pressure control.

[0004] However, existing pressure control methods have significant drawbacks. Mechanical pressure control methods are complex in structure, difficult to adjust, and struggle to adapt to real-time changes during yarn winding. While spring pressure control methods are relatively simple in structure, the elasticity of the spring changes with usage time and frequency, leading to gradually unstable contact pressure and failing to meet the stringent requirements of constant pressure contact during winding for high-modulus yarns. Utility Model Content

[0005] This application provides a pneumatic constant pressure contact device for high modulus yarn winding. It adopts a scheme of adjusting the diameter of the contact sleeve by air pressure to maintain a constant yarn contact pressure, thereby ensuring a constant contact pressure during yarn winding and improving the winding quality.

[0006] This application provides a pneumatic constant pressure contact device for high-modulus yarn winding, which adopts the following technical solution: A pneumatic constant-pressure contact device for high-modulus yarn winding includes a yarn winding drum, a pressure regulating mechanism, a pressure detection component, and a contact sleeve. The contact sleeve includes multiple arc-shaped support plates and elastic elements. The arc-shaped support plates form an annular contact surface through the elastic elements and contact the yarn. The pressure detection component detects the pressure between the yarn and the contact sleeve and adjusts it in conjunction with the pressure regulating mechanism. By adjusting the position of the arc-shaped support plates through the pressure regulating mechanism, the diameter of the contact sleeve is adjusted, causing the pressure between the contact sleeve and the yarn to change, thus maintaining a constant contact pressure between the yarn and the contact sleeve.

[0007] By adopting the above technical solution, this utility model designs a pneumatic constant pressure contact device for high modulus yarn winding. During use, the pressure between the yarn and the contact sleeve is first detected under constant pressure conditions. Then, after the yarn is wound onto the contact sleeve, a pressure detection component is used to detect whether the pressure between the yarn and the contact sleeve is abnormal, thereby adjusting the pressure regulating mechanism. The position of the arc-shaped support plate of the contact sleeve is adjusted through the pressure regulating mechanism. Using the contact sleeve, the pressure between the yarn and the contact sleeve can be detected and adjusted in conjunction, maintaining a constant contact pressure between the yarn and the contact sleeve. This ensures that the yarn is tightly and evenly wound onto the winding drum, forming a structurally stable yarn package. This avoids problems such as uneven tightness, edge collapse, and deformation in the yarn package, guaranteeing the subsequent performance and product quality of the yarn. Compared with mechanical pressure control and spring pressure control, it can better meet the stringent requirements of constant pressure contact during the winding process for high modulus yarn.

[0008] Preferably, the elastic element is an elastic band, and the two sides of the elastic band are fixedly connected to the arc-shaped support plate.

[0009] By adopting the above technical solution, when using the elastic element as an elastic band and fixing its two sides to the arc-shaped support piece, the arc-shaped support piece can form an annular contact surface with the yarn through the elastic band, which helps to move the position of the arc-shaped support piece.

[0010] Preferably, the pressure regulating mechanism includes a cylinder and a push rod, the push rod is connected to the piston rod of the cylinder, and the push rod is fixedly connected to the arc-shaped support plate in the contact sleeve to adjust the position of the contact sleeve.

[0011] By adopting the above technical solution, during use, the cylinder and push rod work together. The push rod is connected to the piston rod of the cylinder and fixed to the arc-shaped support plate in the contact sleeve. The position of the contact sleeve can be adjusted, and the contact pressure between the yarn and the contact sleeve can be adjusted more flexibly and accurately according to the feedback of the pressure detection component.

[0012] Preferably, a buffer layer is provided between the contact sleeve and the yarn winding drum. The buffer layer includes telescopic springs arranged around the push rod, which assist the arc-shaped support plate in telescopic movement.

[0013] By adopting the above technical solution, the device can utilize the telescopic spring to assist the arc-shaped support plate in telescopic movement during use, which can further enhance the ability to adjust the position of the contact sleeve.

[0014] Preferably, the pressure detection component includes at least one pressure sensor, which is disposed inside the contact sleeve, and the signal output terminal of the pressure sensor is connected to the control terminal of the pressure regulating mechanism.

[0015] By adopting the above technical solution, during use, when the high modulus yarn is wound, the pressure sensor set inside the contact sleeve detects the pressure between the yarn and the contact sleeve, and transmits the pressure signal to the control terminal of the pressure regulating mechanism, so that the pressure regulating mechanism can perform linkage adjustment.

[0016] Preferably, the cylinder is connected to a pressure sensor via a closed-loop control system to adjust the cylinder's pressure output in real time according to pressure changes.

[0017] By adopting the above technical solution, during use, the cylinder is connected to the pressure sensor using a closed-loop control system, and the cylinder pressure output can be adjusted in real time according to the pressure change between the yarn and the contact sleeve.

[0018] Preferably, the yarn winding drum has a cavity inside, at least a portion of the pressure regulating mechanism is fixed inside the cavity, and the output end of the pressure regulating mechanism passes through the yarn winding drum and is connected to the contact sleeve.

[0019] By adopting the above technical solution, when in use, at least part of the structure of the pressure regulating mechanism is fixed in the cavity inside the yarn winding drum, which makes the device structure more compact. The output end of the pressure regulating mechanism passes through the yarn winding drum and is connected to the contact sleeve, which helps the pressure regulating mechanism to apply pressure to the contact sleeve.

[0020] Preferably, the two ends of the rotating shaft of the yarn winding onto the drum are supported on the frame by bearing seats, and a driving device is provided at one end.

[0021] By adopting the above technical solution, when in use, the two ends of the rotating shaft of the yarn winding drum are supported on the frame by bearing seats, which can ensure the stable rotation of the rotating shaft. A drive device is set at one end of the rotating shaft to drive the rotating shaft to rotate, thereby driving the yarn to rotate around the drum to realize yarn winding.

[0022] In summary, this application has the following beneficial effects: 1. This utility model designs a pneumatic constant pressure contact device for high modulus yarn winding and forming. The pressure detection component detects the pressure between the yarn and the contact sleeve and adjusts it in conjunction with the pressure regulating mechanism to adjust the diameter of the contact sleeve and maintain a constant contact pressure between the yarn and the contact sleeve. This solves the problem that the existing technology cannot guarantee a constant pressure between the yarn and the contact component during yarn winding. 2. The present invention relates to a pneumatic constant pressure contact device for high modulus yarn winding and forming. The telescopic spring of the buffer layer assists the arc-shaped support plate in telescopic movement, which further enhances the flexibility and stability of the contact pressure adjustment between the contact sleeve and the yarn, and improves the yarn winding and forming quality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment; Figure 2 This is a cross-sectional view of the yarn winding onto the spool and the contact sleeve in the embodiment; Explanation of reference numerals in the attached drawings: 1. Yarn winding drum; 2. Pressure adjustment mechanism; 21. Cylinder; 22. Push rod; 3. Pressure detection component; 31. Pressure sensor; 4. Contact sleeve; 41. Arc-shaped support plate; 42. Elastic element; 421. Elastic strap; 5. Buffer layer; 51. Telescopic spring. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," "lower," "bottom," and "top" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0025] This utility model discloses a pneumatic constant pressure contact device for high-modulus yarn winding, such as... Figure 1 and Figure 2 As shown, the device includes a yarn winding drum 1, a pressure regulating mechanism 2, a pressure detection component 3, and a contact sleeve 4. The contact sleeve 4 is linked to the rotation shaft of the winding drum. The pressure detection component 3 detects the pressure between the yarn and the contact sleeve 4 and adjusts it in conjunction with the pressure regulating mechanism 2 to maintain a constant contact pressure between the yarn and the contact sleeve 4. This structural design allows for real-time sensing of pressure changes between the yarn and the contact sleeve 4, and timely adjustment via the pressure regulating mechanism 2. This avoids problems such as uneven yarn tightness, edge collapse, and deformation caused by unstable pressure, ensuring the winding quality of high-modulus yarn.

[0026] Specifically, the contact sleeve 4 includes multiple arc-shaped support plates 41 and elastic bands 421. The arc-shaped support plates 41 form an annular contact surface with the yarn through the elastic bands 421. The arc-shaped support plates 41 are typically made of high-strength metal materials, such as stainless steel or aluminum alloy, to ensure sufficient rigidity and wear resistance. Alternatively, high-strength plastic materials, such as polycarbonate, can be used, which are lighter and reduce the overall weight of the device. The elastic bands 421 are generally replaced by elastic fiber materials, such as spandex, achieving a similar function. Multiple arc-shaped support plates 41 are closely arranged under the action of the elastic bands 421, forming a complete annular shape and ensuring full contact with the yarn. This structure allows the contact sleeve 4 to better adapt to the shape and winding state of the yarn, improving the stability and uniformity of the contact.

[0027] Specifically, the pressure regulating mechanism 2 includes a cylinder 21 and a push rod 22. The push rod 22 is connected to the piston rod of the cylinder 21, and the push rod 22 is fixedly connected to the arc-shaped support plate 41 in the contact sleeve 4 to adjust the position of the contact sleeve 4. The cylinder 21 is the core component for applying pressure and is usually pneumatically driven, featuring fast response and high control precision. The push rod 22 is generally a metal rod, such as a carbon steel rod, which has high strength and rigidity and can accurately transmit the thrust of the cylinder 21. The push rod 22 can also be made of high-strength composite material, such as a carbon fiber rod, which is lightweight and high-strength. The piston rod of the cylinder 21 pushes the push rod 22 to move, and the push rod 22 drives the arc-shaped support plate 41 in the contact sleeve 4 to move, thereby adjusting the position of the contact sleeve 4 and changing the contact pressure between the yarn and the contact sleeve 4.

[0028] Specifically, a buffer layer 5 is provided between the contact sleeve 4 and the yarn winding drum 1. The buffer layer 5 includes telescopic springs 51 arranged around the push rod 22, which assist the arc-shaped support plate 41 in telescopic movement. The telescopic springs 51 are generally helical springs made of spring steel, which have good elasticity and fatigue performance. Disc springs can also be used, which have a large load-bearing capacity and small deformation. The telescopic springs 51 are sleeved around the push rod 22. When the contact sleeve 4 is subjected to pressure changes, the telescopic springs 51 can play a role in buffering and assisting in adjustment, making the telescopic movement of the arc-shaped support plate 41 more stable and further improving the stability of the contact pressure.

[0029] Specifically, the pressure detection component 3 includes at least one pressure sensor 31, which is disposed inside the contact sleeve 4. The signal output terminal of the pressure sensor 31 is connected to the control terminal of the pressure regulating mechanism 2. The pressure sensor 31 is typically a strain gauge pressure sensor, capable of accurately measuring pressure changes between the yarn and the contact sleeve 4. A piezoresistive pressure sensor 31 can also be used, offering high sensitivity and fast response. The pressure sensor 31 transmits the detected pressure signal to the control terminal of the pressure regulating mechanism 2. The control terminal adjusts the pressure output of the cylinder 21 in a timely manner based on pressure changes, achieving real-time pressure regulation.

[0030] Specifically, cylinder 21 is connected to pressure sensor 31 through a closed-loop control system to adjust the pressure output of cylinder 21 in real time according to pressure changes. The closed-loop control system can continuously compare the pressure signal fed back by pressure sensor 31 with the set pressure value. When a pressure deviation is detected, it adjusts the air intake or exhaust volume of cylinder 21 in a timely manner, thereby changing the output pressure of cylinder 21 and keeping the contact pressure between the yarn and the contact sleeve 4 within the set constant value range.

[0031] Specifically, the yarn winding drum 1 has a chamber inside, and at least a portion of the pressure regulating mechanism 2 is fixed within the chamber. The output end of the pressure regulating mechanism 2 passes through the yarn winding drum 1 and connects to the contact sleeve 4. This design makes the device more compact and reduces the space it occupies. At the same time, placing part of the structure within the chamber also provides some protection and extends its service life.

[0032] Specifically, the two ends of the rotating shaft of the yarn winding drum 1 are supported on the frame by bearing seats, and a drive device is installed at one end. Rolling bearing seats are typically used, which have the characteristics of low friction and high rotational accuracy. Sliding bearing seats can also be used, which have a large load-bearing capacity and are suitable for heavy-duty applications. The drive device is generally a motor, connected to the rotating shaft via a coupling, which drives the yarn to rotate around the drum 1, thus realizing the winding of the yarn.

[0033] The implementation principle of this embodiment is as follows: During the high-modulus yarn winding process, the yarn rotates around the drum 1 under the drive of the driving device, and the yarn contacts and winds with the contact sleeve 4. The pressure sensor 31 in the pressure detection assembly 3 detects the pressure between the yarn and the contact sleeve 4 in real time and transmits the pressure signal to the closed-loop control system. The closed-loop control system compares the detected pressure signal with the set pressure value. When a pressure deviation occurs, it promptly controls the cylinder 21 in the pressure regulating mechanism 2 to adjust the output pressure. The cylinder 21 drives the arc-shaped support plate 41 in the contact sleeve 4 to move through the push rod 22, changing the contact pressure between the contact sleeve 4 and the yarn, restoring it to the set constant value. At the same time, the telescopic spring 51 in the buffer layer 5 assists the arc-shaped support plate 41 in telescopic movement, playing a buffering and regulating role, further improving the stability of pressure control. This pneumatic constant pressure contact device overcomes the shortcomings of existing mechanical pressure control and spring pressure control methods. It can adjust the pressure according to the real-time changes during the yarn winding process, ensuring the stability of the contact pressure during the winding of high-modulus yarn, improving the winding quality of the yarn, and meeting the strict requirements of high-end fields for high-modulus yarn.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pneumatic constant pressure contact device formed by winding high-modulus yarn, characterized in that: The device includes a yarn winding spool (1), a pressure regulating mechanism (2), a pressure detection component (3), and a contact sleeve (4). The contact sleeve (4) includes multiple arc-shaped support plates (41) and elastic elements (42). The arc-shaped support plates (41) form an annular contact surface through the elastic elements (42) and contact the yarn. The pressure detection component (3) detects the pressure between the yarn and the contact sleeve (4) and adjusts it in conjunction with the pressure regulating mechanism (2). The pressure regulating mechanism (2) adjusts the position of the arc-shaped support plates (41) to adjust the diameter of the contact sleeve (4), thereby changing the pressure between the contact sleeve (4) and the yarn and maintaining a constant contact pressure between the yarn and the contact sleeve (4).

2. The pneumatic constant pressure contact device formed by winding high-modulus yarn according to claim 1, characterized in that: The elastic element (42) is an elastic band (421), and the two sides of the elastic band (421) are fixedly connected to the arc-shaped support plate (41).

3. The pneumatic constant pressure contact device formed by winding high-modulus yarn according to claim 1, characterized in that: The pressure regulating mechanism (2) includes a cylinder (21) and a push rod (22). The push rod (22) is connected to the piston rod of the cylinder (21). The push rod (22) is fixedly connected to the arc-shaped support plate (41) in the contact sleeve (4) to adjust the position of the contact sleeve (4).

4. The pneumatic constant pressure contact device for high-modulus yarn winding according to claim 1, characterized in that: A buffer layer (5) is also provided between the contact sleeve (4) and the yarn winding drum (1). The buffer layer (5) includes a telescopic spring (51) arranged around the push rod (22). The telescopic spring (51) assists the arc-shaped support plate (41) in telescopic movement.

5. The pneumatic constant pressure contact device for high-modulus yarn winding according to claim 1, characterized in that: The pressure detection component (3) includes at least one pressure sensor (31), which is disposed inside the contact sleeve (4), and the signal output end of the pressure sensor (31) is connected to the control end of the pressure regulating mechanism (2).

6. The pneumatic constant pressure contact device for high-modulus yarn winding according to claim 3, characterized in that: The cylinder (21) is connected to the pressure sensor (31) through a closed-loop control system to adjust the pressure output of the cylinder (21) in real time according to pressure changes.

7. The pneumatic constant pressure contact device for high-modulus yarn winding according to claim 1, characterized in that: The yarn winding drum (1) has a cavity inside, and at least a part of the structure of the pressure regulating mechanism (2) is fixed in the cavity. The output end of the pressure regulating mechanism (2) passes through the yarn winding drum (1) and is connected to the contact sleeve (4).

8. The pneumatic constant pressure contact device for high-modulus yarn winding according to claim 1, characterized in that: The two ends of the rotating shaft of the yarn winding drum (1) are supported on the frame by bearing seats, and a driving device is provided at one end.

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