Covering yarn carding and drawing device with core yarn tension self-adjusting function

Abstract

The invention relates to the technical field of yarn manufacturing tensioning mechanisms, in particular to a core yarn tension self-adjusting covering yarn carding and drawing device which comprises a fixing plate, a driving wheel, a guide wheel and a tensioning mechanism are mounted in front of the fixing plate, and the driving wheel is provided with an electric driving device. The tensioning mechanism is located between the driving wheel and the guide wheel, a hollow base is arranged on the fixing plate, the tensioning mechanism comprises a volute spring arranged in the hollow base, a swing arm is connected to the hollow base in a rotating mode, the rotating end of the swing arm enters the hollow base and is connected to the volute spring, and the rotating end of the swing arm is connected to the volute spring. The tensioning mechanism further comprises a tensioning wheel arranged at the other end of the swing arm, the tensioning wheel extends to the guide wheel, a triggering mechanism is arranged in the hollow seat and has storage performance, the action condition of the triggering mechanism is linked to the tensioning mechanism, the triggering effect is obvious and urgent, and the safety performance is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of yarn tensioning mechanism, in particular to a core-spun yarn carding and drawing device with core yarn tension self-adjustment. BACKGROUND

[0002] In the production process of core-spun yarn, carding and drawing is a key pretreatment process, which functions to evenly card the core yarn and the outer wrapping fiber and preliminarily combine them into a sliver, laying a foundation for subsequent cabling (such as twisting). This process usually involves yarn conveying, guiding, tensioning, and finally outputting. Among them, stable and reliable tension control is crucial to ensure uniform combination of core yarn and outer wrapping fiber and prevent yarn slackening or excessive stretching. Traditional core-spun yarn carding and drawing devices often use mechanical tensioning wheels or pneumatic pressurizing mechanisms (such as Chinese Patent No. 202221817575.9) to achieve yarn tensioning. The tensioning structure adopts a ring array of tensioning pieces, and the tensioning power is provided by a gas cylinder. When the tensioning force is relaxed, the gas cylinder simultaneously provides gas to the tensioning pieces, causing them to simultaneously perform radial tensioning action.

[0003] The existing technology has the following problems: 1. The pneumatic components are externally placed, occupying valuable equipment space. Gas pipes need to be set up between the cylinder and each tensioning piece. When the cylinder is exhausted, it cannot guarantee that each gas pipe has the same amount of gas intake, and it cannot guarantee that the tensioning pieces make tensioning action with the same amplitude, resulting in uneven radial tensioning force; 2. When the yarn is accidentally broken, the broken end will be wrapped inside the tensioning spring, causing the equipment to jam, making it difficult to clean, and even causing safety hazards. If the front end of the active conveying wheel cannot be stopped in time, the yarn will accumulate, entangle, or even knot at the guide wheel and tensioning wheel. SUMMARY

[0004] To solve the above problems, the present application provides the following technical solutions: A core-spun yarn carding and drawing device with core yarn tension self-adjustment, comprising a fixed plate, a driving wheel, a guide wheel and a tensioning mechanism are installed on the front face of the fixed plate, the driving wheel is provided with an electric drive device, the tensioning mechanism is located between the driving wheel and the guide wheel, a hollow seat is provided on the fixed plate, the tensioning mechanism comprises a vortex spring arranged in the hollow seat, a swing arm is connected to the hollow seat, the swing arm is connected to the vortex spring at the connecting end, the tensioning mechanism further comprises a tensioning wheel arranged on the other end of the swing arm, the tensioning wheel extends to the guide wheel, a trigger mechanism is arranged in the hollow seat, the trigger mechanism is arranged on the swing arm and in contact with the rotating end of the swing arm, the trigger mechanism is electrically connected to the electric drive device and is used to trigger a signal to the electric drive device when the rotating end of the swing arm rotates to a specific position due to the contraction of the vortex spring.

[0005] As further preferred, a guide rail is installed on the fixing plate, an adjusting seat is installed on the guide rail, a screw rod is installed in the guide rail, the adjusting seat is drivingly connected to the screw rod, the hollow seat is installed on the adjusting seat, and the adjusting seat can drive the hollow seat to move linearly under the driving of the screw rod.

[0006] As further preferred, the hollow seat is composed of a cylinder seat and a fixing seat, the fixing seat is detachably fixed on the rear end of the cylinder seat, the fixing seat is fixed as a fixed end on the adjusting seat, and the rotating end of the swing arm is connected to the front end of the cylinder seat.

[0007] As further preferred, the vortex spring is conical, the vortex spring is located in the cylinder cavity of the cylinder seat, the large-diameter end of the vortex spring is connected to the fixing seat, and the small-diameter end of the vortex spring is connected to the rotating end of the swing arm.

[0008] As further preferred, the trigger mechanism includes a cam plate and a contact switch, the cam plate is located in the cylinder cavity of the cylinder seat and is installed on the rotating end of the swing arm, and the contact switch is installed in the cylinder cavity of the cylinder seat and is oppositely arranged on the rotating path of the cam plate.

[0009] As further preferred, a motor rack is installed on the back of the fixing plate, the electric driving device is a motor installed on the motor rack, and the driving wheel is drivingly connected to the power output shaft of the motor.

[0010] As further preferred, an assembly hole is formed in the front end of the cylinder seat, a wear-resistant sleeve is installed in the assembly hole, and the rotating end of the swing arm is assembled in the wear-resistant sleeve.

[0011] As further preferred, the trigger mechanism includes a proximity switch, the proximity switch is fixedly installed on the inner wall of the cylinder seat, the rotating end of the swing arm is provided with a sensing sheet, when the vortex spring is contracted to drive the rotating end of the swing arm to rotate to a set position, the sensing sheet enters the effective sensing distance of the proximity switch, and the electric driving device is triggered to be powered off.

[0012] The beneficial effects of the present application compared with the prior art are: The tensioning wheel is arranged on the swing arm, the rotating end of the swing arm is connected to the hollow seat, the swing arm is lengthened, the tensioning wheel is closer to the splicing position, the vortex spring provides the swing arm with tensioning force in the radial direction, the rear end of the vortex spring is fixed in the hollow seat, the front end of the vortex spring is connected to the rotating end of the swing arm, the rotating end of the swing arm is connected to the hollow seat, the rotating end of the swing arm is provided with stable rotation conditions from the connecting position, the vortex spring is prevented from being bent and deformed, and the service life is prolonged; the trigger mechanism is arranged in the hollow seat by using the rotation performance of the swing arm, when the yarn is broken, the tensioning balance of the tensioning wheel is broken, the vortex spring is quickly contracted in the radial direction, the swing arm is quickly rotated clockwise, the trigger mechanism is quickly operated, the electric driving device is quickly powered off, the driving wheel is quickly stopped, and the yarn is stopped from being conveyed. The trigger mechanism is arranged in the hollow seat and has the storage function, the action conditions of the trigger mechanism are linked to the tensioning mechanism, the trigger effect is obvious, the safety performance is high, when the yarn is broken, the power can be quickly stopped, the yarn is stopped from being conveyed, the broken end is prevented from being wound in the tensioning spring, the equipment is prevented from being stuck and the safety hidden danger is prevented, after the quick stop, the yarn will not be accumulated, wound and knotted at the guide wheel and the tensioning wheel. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A first view schematic diagram of a core yarn tension self-adjusting core-spun yarn carding and drawing device provided by the embodiment of the application; Figure 2 A second view schematic diagram of a core yarn tension self-adjusting core-spun yarn carding and drawing device provided by the embodiment of the application; Figure 3 A third view schematic diagram of a core yarn tension self-adjusting core-spun yarn carding and drawing device provided by the embodiment of the application; Figure 4 A schematic diagram of a core yarn tension self-adjusting core-spun yarn carding and drawing device provided by the embodiment of the application after being partially cut open; Figure 5 A local structure schematic diagram of a core yarn tension self-adjusting core-spun yarn carding and drawing device provided by the embodiment of the application after only the cylinder seat is cut open.

[0014] In the figure: 1, fixed plate; 2, driving wheel; 3, guide wheel; 4, hollow seat; 5, swing arm; 6, vortex spring; 7, tensioning wheel; 8, trigger mechanism; 9, cylinder seat; 10, fixed seat; 11, guide rail; 12, adjusting seat; 13, screw rod; 14, cam plate; 15, contact switch; 16, motor frame; 17, motor; 18, assembly hole; 19, wear-resistant sleeve. DETAILED DESCRIPTION

[0015] The above and other aspects, embodiments and advantages of the present application will become more apparent to those skilled in the art from the following description taken in conjunction with the accompanying drawings. It is to be understood that the above-referenced drawings depict only typical embodiments of the present application and are therefore not to be considered limiting of its scope.

[0016] In one embodiment, as shown in Figures 1-5 The embodiment provides a core yarn combing and drawing device with core yarn tension self-adjustment, which comprises a fixed plate 1, a driving wheel 2, a guide wheel 3 and a tensioning mechanism are installed on the front of the fixed plate 1, the driving wheel 2 is provided with an electric driving device, the tensioning mechanism is located between the driving wheel 2 and the guide wheel 3, a hollow seat 4 is arranged on the fixed plate 1, the tensioning mechanism comprises a vortex spring 6 arranged in the hollow seat 4, a swing arm 5 is connected to the hollow seat 4, the swing arm 5 is connected to the vortex spring 6 at the connecting end, the tensioning mechanism further comprises a tensioning wheel 7 arranged on the other end of the swing arm 5, the tensioning wheel 7 extends to the guide wheel 3, a triggering mechanism 8 is arranged in the hollow seat 4, the triggering mechanism 8 is arranged on the swing arm 5 and in contact with the rotating end of the swing arm 5, the triggering mechanism 8 is electrically connected to the electric driving device, and is used for triggering a signal to the electric driving device when the rotating end of the swing arm 5 rotates to a specific position due to the contraction of the vortex spring 6.

[0017] The electric driving device drives the driving wheel 2 to rotate, so that the yarn is conveyed towards the guide wheel 3, the output end of the yarn is spliced between the two guide wheels 3, and finally output to the next splicing process such as a twisting machine to complete the strand. The embodiment mainly improves the tensioning function.

[0018] Structurally, the cavity of the hollow seat 4 is used as a containing chamber of the vortex spring 6, the vortex spring 6 is used as an elastic tensioning body, the vortex spring 6 is arranged in the hollow seat 4, the external occupied space is greatly reduced, and the structure is simple. Since the vortex spring 6 is arranged and set, the thread end will not be clamped into the spring when the thread breaks, and the safety performance is high. The tensioning wheel 7 is arranged on the swing arm 5, the rotating end of the swing arm 5 is connected to the hollow seat 4, the swing arm 5 lengthens the tensioning distance, so that the tensioning wheel 7 is closer to the splicing position, the vortex spring 6 provides tension to the swing arm 5 with a radial variable, the rear end of the vortex spring 6 is fixed in the hollow seat 4, the front end of the vortex spring 6 is connected to the rotating end of the swing arm 5, and the rotating end of the swing arm 5 is connected to the hollow seat 4, which provides stable rotation conditions for the rotating end of the swing arm 5 from the connecting position, and also avoids the bending and deformation of the vortex spring 6, thereby improving the service life.

[0019] ​Functionally: by setting the trigger mechanism 8 in the hollow seat 4, when the yarn is broken due to excessive tension or excessive tension, the trigger mechanism 8 triggers the power-off of the electric drive device, avoiding violent winding or bunching of the yarn. The trigger power of the trigger mechanism 8 comes from the rotating end of the swing arm 5, and the principle is as follows: in the normal state, the radial expansion of the vortex spring 6 has a radial contraction potential, and the vortex spring 6 provides a counterclockwise rotation potential to the swing arm 5 by using the radial contraction potential. The tensioning wheel 7 is pressed on the yarn under the action of the rotation potential of the swing arm 5, so as to provide tension to the yarn, and when the yarn is relaxed, the vortex spring 6 will automatically adjust the radial expansion force and automatically adjust the radial contraction potential, so as to ensure that the swing arm 5 continuously presses the tensioning wheel 7 on the yarn and continuously provides tension. Conversely, when the yarn is broken, the tension balance of the tensioning wheel 7 will be broken, the vortex spring 6 will rapidly contract radially, the swing arm 5 will rapidly rotate clockwise, the trigger mechanism 8 will rapidly move, the electric drive device will rapidly power off, and the driving wheel 2 will rapidly stop working. The yarn stops conveying. The trigger mechanism 8 is arranged in the hollow seat 4, has a storage function, and links the action condition of the trigger mechanism 8 to the tensioning mechanism. The trigger effect is obvious, quick, and has high safety performance. When the yarn is accidentally broken, the power can be quickly stopped, the yarn conveying is stopped, the broken yarn is prevented from being wound into the tensioning spring, the equipment is prevented from being stuck and safety hazards are prevented. After the quick stop, the yarn will not be accumulated, wound and knotted at the guide wheel and the tensioning wheel.

[0020] As shown in Figure 4 , in another embodiment, a guide rail 11 is installed on the fixed plate 1, an adjustment seat 12 is installed on the guide rail 11, a screw rod 13 is installed in the guide rail 11, and the adjustment seat 12 is drivingly connected to the screw rod 13. The hollow seat 4 is installed on the adjustment seat 12, and the adjustment seat 12 can drive the hollow seat 4 to move linearly under the driving of the screw rod 13.

[0021] In this embodiment, the guide rail 11 provides the adjustment seat 12 with a motion installation condition. The rotation of the hand wheel drives the rotation of the screw rod 13, and the adjustment seat 12 is driven by the screw rod 13 to move relative to the tensioning side of the yarn, so that the hollow seat 4 drives the tensioning wheel 7 to adjust the tension on the yarn. When the yarn is broken, the tension of the tensioning wheel 7 can be adjusted manually to reduce the tension, so as to meet the tensioning requirements of different types of yarn. By adjusting the tension within a reasonable range, the frequency of yarn breakage is reduced, and the tensioning degree required when the yarn is output and cabled is ensured.

[0022] As shown in Figure 1 , Figure 4As shown in another embodiment, the hollow seat 4 is composed of a cylinder seat 9 and a fixing seat 10, the fixing seat 10 is detachably fixed on the rear end of the cylinder seat 9, the fixing seat 10 is fixed on the adjusting seat 12 as a fixed end, and the rotating end of the swing arm 5 is connected to the front end of the cylinder seat 9; the spiral spring 6 is conical, and the spiral spring 6 is located in the cylinder cavity of the cylinder seat 9, the large-diameter end of the spiral spring 6 is connected to the fixing seat 10, and the small-diameter end of the spiral spring 6 is connected to the rotating end of the swing arm 5. When the fixing seat 10 is installed on the cylinder seat 9, the spiral spring 6 extends into the cylinder seat 9, and the spiral spring 6 can also be removed from the cylinder seat 9 with the fixing seat 10, so as to facilitate replacement or maintenance.

[0023] In the embodiment, the fixing seat 10 is a carrier for connecting the hollow seat 4 and the adjusting seat 12, the cylinder seat 9 is a carrier for installing the rotating end of the swing arm 5 and the spiral spring 6, the rotating end of the swing arm 5 is connected to the front end of the cylinder seat 9, and a part of the rotating end of the swing arm 5 enters the cylinder seat 9 from the front end of the cylinder seat 9 and is connected to the front end of the spiral spring 6, so as to position the outer end part of the swing arm 5 at a deflection angle, and ensure that the swing arm 5 has a certain rotational potential under the radial elastic force of the spiral spring 6, so as to tension the tensioning wheel 7 on the yarn. The rotating end of the swing arm 5 is away from the tensioning wheel 7, so that the rotating position and the tensioning position are away from each other, which not only prolongs the tensioning distance, but also avoids that the thread end is wound on the spring or the rotating position when the thread breaks.

[0024] As shown in another embodiment, Figure 4 , Figure 5 As shown in another embodiment, the trigger mechanism 8 includes a cam plate 14 and a contact switch 15, the cam plate 14 is located in the cylinder cavity of the cylinder seat 9 and is installed on the rotating end of the swing arm 5, and the contact switch 15 is installed in the cylinder cavity of the cylinder seat 9 and is oppositely arranged on the rotating path of the cam plate 14.

[0025] In the embodiment, the cam plate 14 is a driving part for triggering the action of the trigger mechanism 8, and the contact switch 15 is a command back driving part. When the thread breaks, the resistance force acting on the tensioning wheel 7 by the yarn disappears instantaneously, the swing arm 5 rotates clockwise, the cam plate 14 rotates clockwise with the swing arm 5, and the cam plate 14 instantaneously contacts the contact switch 15, the normally closed contact of the contact switch 15 is opened, the electric driving device is powered off, the driving wheel 2 stops rotating, and the yarn stops conveying. The cam plate 14 is installed on the rotating end of the swing arm 5, and serves as a linkage component for triggering the contact switch 15 instantaneously when the thread breaks, so that the contact switch 15 is powered off rapidly, the tensioning function is combined with the emergency stop protection, the emergency stop triggering mode is a pure mechanical contact, and the circuit and components are saved.

[0026] As shown in another embodiment, Figure 5As shown in another embodiment, an electric triggering mode of the triggering mechanism 8 is disclosed, the triggering mechanism 8 comprises a proximity switch fixedly installed on the inner wall of the barrel seat 9, and the rotating end of the swing arm 5 is provided with a sensing sheet, when the vortex spring 6 is contracted to drive the rotating end of the swing arm 5 to rotate to the set position, the sensing sheet enters the effective sensing distance of the proximity switch, so as to electrically trigger the power-off of the electric driving device, and the intelligence is higher.

[0027] As Figure 3 shown, the back of the fixed plate 1 is provided with a motor bracket 16, and the electric driving device is a motor 17 installed on the motor bracket 16, the driving wheel 2 is drivingly connected to the power output shaft of the motor 17, and the motor 17 provides power to the driving wheel 2 alone, and the driving wheel 2 provides conveying power to the yarn, and the motor 17 can also be understood as an electric driving force in the previous process (for example, a yarn machine).

[0028] As Figure 4 , Figure 5 shown, the front end of the barrel seat 9 is provided with an assembly hole 18, and a wear-resistant sleeve 19 is installed in the assembly hole 18, and the rotating end of the swing arm 5 is assembled on the wear-resistant sleeve 19, thereby improving the wear resistance.

[0029] The above orientation reference does not represent the specific orientation of each component in the embodiment, and the embodiment is only for the convenience of describing the scheme, and the relative description is set according to the orientation in the figure, and the specific orientation of each component is according to the actual installation and actual use and the orientation description habit of the person skilled in the art, and it is hereby stated.

[0030] The above specific embodiments further specifically describe the purposes, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and does not limit the protection scope of the present application. It is particularly pointed out that any modification, equivalent replacement, improvement, etc. made by those skilled in the art within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A core-spun slubbing device with self-adjusting core filament tension, characterized in that, The utility model provides a kind of tensioning mechanism of cable, including fixed plate (1), the front of the fixed plate (1) is equipped with driving wheel (2), guide wheel (3) and tensioning mechanism, the driving wheel (2) is with electric drive device, the tensioning mechanism is between the driving wheel (2) and the guide wheel (3), hollow seat (4) is equipped on the fixed plate (1), the tensioning mechanism includes the vortex spring (6) being arranged in the hollow seat (4), the hollow seat (4) is connected with swing arm (5), the swing arm (5) is connected in the vortex spring (6) and is connected in the hollow seat (4) in the swing arm (5) the swing arm (5) is connected with the other end on the tensioning wheel (7) of swing arm (5), the tensioning wheel (7) is stretched to the guide wheel (3), the hollow seat (4) is equipped with trigger mechanism (8), the trigger mechanism (8) is arranged on the swing arm (5), and the swing arm (5) is formed with the rotating end contact relationship, the trigger mechanism (8) is electrically connected with the electric drive device, for when the rotating end of the swing arm (5) is rotated to specific location due to the contraction of the vortex spring (6), the electric drive device is triggered signal.

2. A core-spun yarn combing and drawing device with core filament tension self-adjustment according to claim 1, characterized in that, The fixed plate (1) is equipped with guide rail (11), the guide rail (11) is equipped with adjusting seat (12), the guide rail (11) is equipped with screw rod (13), the adjusting seat (12) is drivingly connected on the screw rod (13), the hollow seat (4) is installed on the adjusting seat (12), the adjusting seat (12) can drive the linear motion of the hollow seat (4) under the transmission of the screw rod (13).

3. A core-spun yarn combing and drawing device with core filament tension self-adjustment according to claim 2, characterized in that, The hollow seat (4) is composed of cylinder seat (9) and fixed seat (10), the fixed seat (10) is detachably fixed on the rear end of the cylinder seat (9), the fixed seat (10) is fixed as fixed end on the adjusting seat (12), and the rotating end of the swing arm (5) is connected to the front end of the cylinder seat (9).

4. A core-spun yarn combing and drawing device with core filament tension self-adjustment according to claim 3, characterized in that, The vortex spring (6) is conical, and the vortex spring (6) is located in the cylinder cavity of the cylinder seat (9), the large-diameter end of the vortex spring (6) is connected to the fixed seat (10), and the small-diameter end of the vortex spring (6) is connected to the rotating end of the swing arm (5).

5. A core-spun yarn combing and drawing device with core filament tension self-adjustment according to claim 4, characterized in that, The trigger mechanism (8) includes cam plate (14) and contact switch (15), the cam plate (14) is located in the cylinder cavity of the cylinder seat (9) and is installed on the rotating end of the swing arm (5), and the contact switch (15) is installed in the cylinder cavity of the cylinder seat (9) and is oppositely arranged on the rotating path of the cam plate (14).

6. A core-spun yarn combing and drawing device with core filament tension self-adjustment according to claim 4, characterized in that, The trigger mechanism includes a proximity switch, the proximity switch is fixedly installed on the inner wall of the cylinder seat (9), the rotating end of the swing arm (5) is provided with an induction sheet, when the vortex spring (6) is contracted to drive the rotating end of the swing arm (5) to rotate to a set position, the induction sheet enters the effective induction distance of the proximity switch, and triggers the power-off of the electric drive device.

7. A core-spun yarn combing and drawing device with core filament tension self-regulation according to claim 5 or 6, characterized in that, The back surface of the fixed plate (1) is provided with a motor frame (16), the electric driving device is a motor (17) installed on the motor frame (16), and the driving wheel (2) is drivingly connected to the power output shaft of the motor (17).

8. A core-spun yarn combing and drawing device with core filament tension self-adjustment according to claim 3, characterized in that, The front end of the barrel seat (9) is provided with an assembling hole (18), a wear-resistant sleeve (19) is installed in the assembling hole (18), and the rotating end of the swing arm (5) is assembled on the wear-resistant sleeve (19).

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