A device for preventing breakage of polyester low-elasticity yarn

Abstract

The utility model discloses a kind of polyester low elastic yarn breakage prevention devices, belong to polyester low elastic yarn technical field, this polyester low elastic yarn breakage prevention device, including frame, driving mechanism is installed in the frame, the two sides of the gear disc are engaged with the adjusting mechanism respectively connected with two moving rollers;Multiple limiting mechanisms for limiting moving roller are fixedly connected in the frame, and one side of one of the godet is equipped with sensing mechanism.The utility model realizes the direct conversion of power transmission by driving mechanism, utilizes the cooperation of motor and gear disc to respond tension change demand quickly, significantly improves adjustment accuracy and real-time performance;Through adjusting mechanism, the meshing transmission of gear disc and rack is realized, rotary motion is converted into horizontal push-pull force, so that moving roller completes symmetrical tension compensation, effectively balances the tension difference between multiple wires;Through the combination structure of sliding slot rod and limiting plate in limiting mechanism, ensure that moving roller always keeps horizontal displacement track.

Description

Technical Field

[0001] This utility model relates to the field of polyester low-elasticity yarn technology, and in particular to a polyester low-elasticity yarn anti-breakage device. Background Technology

[0002] In the field of textile materials application, low-elasticity polyester yarn is widely used in the production of industrial textiles and civilian fabrics due to its unique physical properties. However, its inherent low elongation has always been a technical bottleneck in the process of industrial production.

[0003] Under current technological conditions, when low-elasticity yarns are subjected to high-speed stretching or frequent turning through equipment such as guide rollers and winding mechanisms, the lack of sufficient deformation compensation capacity of the fiber molecular chain segments makes them prone to stress concentration at the contact interface between the yarn and the guide components due to the combined effects of mechanical friction, instantaneous tension fluctuations, or deviations in the heat setting process. Especially in multi-pass composite processing scenarios, the constant tension control mode used by traditional tensioning devices cannot match the dynamic mechanical characteristics of low-elasticity yarns, causing the yarn bundle to accumulate micro-cracks during repeated elastic deformation-recovery cycles, ultimately resulting in frequent yarn breakage and increased fabric defects. The rigid guide structure commonly found in existing winding equipment further exacerbates the inelastic collision between the yarn bundle and mechanical components. Under high-speed operation, the coupling effect of this mechanical impact and the inherent brittleness of low-elasticity yarns has become a key technical challenge restricting production efficiency and product quality.

[0004] Therefore, there is an urgent need to provide a device to prevent the breakage of polyester low-elasticity yarn in order to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a device to prevent the breakage of polyester low elastic yarn.

[0006] To solve the above-mentioned technical problems, the present invention provides a technical solution: a polyester low-elasticity yarn anti-breakage device, comprising a frame, two guide rollers rotatably connected within the frame, a plurality of polyester low-elasticity yarns sliding between the two guide rollers, two movable rollers slidably connected within the frame and both in contact with the polyester low-elasticity yarns, a drive mechanism installed within the frame, a gear plate fixedly connected to the output end of the drive mechanism, and adjustment mechanisms respectively connected to the two movable rollers meshing on both sides of the gear plate;

[0007] The frame is fixedly connected with multiple limiting mechanisms for limiting the movement of the roller, and a sensing mechanism is installed on one side of one of the guide rollers.

[0008] The present invention is further configured such that: the driving mechanism includes a first bracket fixedly connected to the inner wall of the frame, a motor is installed in the first bracket, and the output end of the motor is fixedly connected to a rotating shaft fixedly connected to the center of the gear plate.

[0009] Through the above technical solution, the drive mechanism uses a motor as the power source. The motor directly drives the gear disk to rotate through the rotating shaft. When the sensing mechanism triggers the adjustment signal, the controller starts the motor to drive the rotating shaft to rotate, thereby driving the gear disk to rotate in a directional manner. This drive method realizes the direct conversion of power transmission. By controlling the motor speed, the rotation angle of the gear disk can be precisely adjusted, thereby controlling the displacement amplitude of the adjustment mechanism. It has the characteristics of fast response speed and high adjustment accuracy, and can meet the real-time requirements of dynamic compensation of yarn tension.

[0010] The present invention is further configured such that: the adjustment mechanism includes a second bracket fixedly connected within the frame, the rotating shaft is rotatably connected to the second bracket, a limiting frame is fixedly connected to the outside of the second bracket, two racks are slidably connected within the limiting frame and respectively meshing with both sides of the gear disk, the rear ends of the two racks are rotatably connected to a second shaft, and the two moving rollers are respectively fixedly connected to the two second shafts.

[0011] Through the above technical solution, the adjustment mechanism uses the meshing transmission of the toothed disc and the rack to achieve linear motion conversion. When the toothed disc rotates, the racks on both sides move synchronously in opposite directions, driving the moving roller to produce symmetrical position adjustment. The linear motion of the rack converts the rotational motion of the toothed disc into a horizontal pushing and pulling force, so that the moving roller applies precise tension compensation to the yarn. This symmetrical adjustment mechanism can balance the tension difference of multiple yarns at the same time, avoid secondary tension imbalance caused by unilateral adjustment, and ensure the stability of the yarn transmission process.

[0012] The present invention is further configured such that: two T-shaped grooves are provided in the limiting frame, and T-shaped blocks are fixedly connected to the outward side of the two racks, and the two T-shaped blocks slide in the two T-shaped grooves respectively.

[0013] Through the above technical solution, the limiting frame cooperates with the T-block of the rack through the T-slot to form a vertical motion guide structure. When the rack is driven by the toothed disc to generate displacement, the T-block slides in the T-slot, restricting the rack to move only along a straight trajectory. This guide structure effectively prevents the rack from deflecting or getting stuck during the movement, ensuring that the adjustment mechanism always maintains the preset movement path, thereby ensuring the accuracy and reliability of the moving roller displacement.

[0014] The present invention is further configured such that: the limiting mechanism includes a plurality of sliding rods fixedly connected to the bottom of the frame, the two ends of the two shafts are respectively located in the plurality of sliding rods, and the two ends of the two shafts are rotatably connected to limiting plates that are slidably connected to the plurality of sliding rods respectively.

[0015] Through the above technical solution, the limiting mechanism adopts a combination structure of sliding rod and limiting plate. When the moving roller is driven by the adjusting mechanism to generate displacement, the limiting plates at both ends of the shaft slide outside the sliding rod, forming a horizontal movement constraint. This structure ensures that the moving roller maintains a horizontal displacement state through multi-point support, avoids tilting and deviation caused by gravity or external force, and disperses the radial force borne by the moving roller, extending the service life of the equipment and improving the stability of tension adjustment.

[0016] The present invention is further configured such that: the sensing mechanism includes a third bracket fixedly connected to one side of the inner wall of the frame; a plurality of pressure sensors are mounted on the top of the third bracket; a sensing plate is fixedly connected to the top of the plurality of pressure sensors; a plurality of polyester low-elastic yarns are in contact with the top of the sensing plate; a controller electrically connected to the pressure sensors is fixedly connected to the top of the third bracket; and the motor is electrically connected to the controller.

[0017] Through the above technical solution, the sensing mechanism collects the contact pressure data between the yarn and the sensing plate in real time through pressure sensors. When the yarn tension changes, the pressure sensor at the corresponding position transmits the signal to the controller, triggering the motor to start the adjustment program. This pressure sensing mechanism can realize real-time monitoring of the yarn status, accurately identify the location of abnormal tension through multi-point pressure detection, and form a closed-loop control with the automatic adjustment system to effectively prevent yarn breakage accidents, while reducing the need for manual inspection and improving the automation level of the equipment.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. This utility model achieves direct conversion of power transmission through a drive mechanism, utilizing the cooperation between the motor and the gear disc to quickly respond to tension changes, significantly improving adjustment accuracy and real-time performance; through the adjustment mechanism, the gear disc and rack mesh to drive, converting rotational motion into horizontal push-pull force, enabling the moving roller to complete symmetrical tension compensation, effectively balancing the tension differences between multiple threads; through the combination structure of the sliding groove rod and the limiting plate in the limiting mechanism, it ensures that the moving roller always maintains a horizontal displacement trajectory, preventing tilting and deviation and dispersing radial force, thus extending the service life of the equipment;

[0020] 2. This utility model forms a closed-loop control system by real-time monitoring of the pressure sensor in the sensing mechanism, which triggers an abnormal tension signal, drives the controller, and adjusts the motor. It accurately identifies the abnormal position and initiates the compensation program. Finally, through the collaboration of multiple mechanisms, it achieves dynamic balance of the yarn tension, which not only avoids the risk of yarn breakage but also improves the equipment's adaptability to yarns of different specifications. Attached Figure Description

[0021] Figure 1 This is a first-view structural diagram of the present invention;

[0022] Figure 2 This is a second-view sectional view of the present invention;

[0023] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0024] Figure 4 This is a third-view sectional view of the present invention;

[0025] Figure 5 for Figure 4 A magnified view of a section at point B in the middle;

[0026] Figure 6 for Figure 4 A magnified view of a section at point C;

[0027] Figure 7 This is a fourth-angle sectional view of the present invention.

[0028] In the diagram: 1. Frame; 2. Guide roller; 3. Polyester low-elasticity yarn; 4. Moving roller; 5. Drive mechanism; 501. First support; 502. Motor; 503. Rotating shaft; 6. Gear plate; 7. Adjustment mechanism; 701. Second support; 702. Limiting frame; 703. Rack; 704. Shaft 2; 705. T-slot; 706. T-block; 8. Limiting mechanism; 801. Sliding rod; 802. Limiting plate; 9. Sensing mechanism; 901. Third support; 902. Pressure sensor; 903. Sensing plate; 904. Controller. Detailed Implementation

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0030] Please see Figures 1-7This embodiment of a polyester low-elasticity yarn anti-breakage device includes a frame 1, with two guide rollers 2 rotatably connected inside the frame 1. Multiple polyester low-elasticity yarns 3 slide between the two guide rollers 2. Two movable rollers 4, both in contact with the polyester low-elasticity yarns 3, are slidably connected inside the frame 1. A drive mechanism 5 is installed inside the frame 1. The drive mechanism 5 includes a first bracket 501 fixedly connected to the inner wall of the frame 1. A motor 502 is installed inside the first bracket 501. The output end of the motor 502 is fixedly connected to a rotating shaft 503 fixedly connected to the center of a gear disc 6. Using motor 502 as the power source, motor 502 directly drives the gear disk 6 to rotate via rotating shaft 503. When the sensing mechanism 9 triggers the adjustment signal, controller 904 starts motor 502 to drive rotating shaft 503 to rotate, thereby driving gear disk 6 to rotate in a specific direction. This driving method realizes direct conversion of power transmission. By controlling the speed of motor 502, the rotation angle of gear disk 6 can be precisely adjusted, thereby controlling the displacement amplitude of adjustment mechanism 7. It has the characteristics of fast response speed and high adjustment accuracy, and can meet the real-time requirements of dynamic compensation of yarn tension.

[0031] like Figures 1-4 As shown, a geared disc 6 is fixedly connected to the output end of the drive mechanism 5. Adjustment mechanisms 7, each connected to two movable rollers 4, mesh on both sides of the geared disc 6. The adjustment mechanism 7 includes a second bracket 701 fixedly connected within the frame 1. A rotating shaft 503 is rotatably connected to the second bracket 701. A limit frame 702 is fixedly connected to the outside of the second bracket 701. Two racks 703, each meshing with both sides of the geared disc 6, are slidably connected within the limit frame 702. A shaft 704 is rotatably connected to the rear ends of each rack 703. The two movable rollers 4 are respectively connected to two… Shaft 2 704 is fixedly connected. The adjustment mechanism 7 uses the meshing transmission between the gear disk 6 and the rack 703 to realize linear motion conversion. When the gear disk 6 rotates, the racks 703 on both sides move synchronously in opposite directions, driving the moving roller 4 to produce symmetrical position adjustment. The linear motion of the rack 703 converts the rotational motion of the gear disk 6 into a horizontal pushing and pulling force, so that the moving roller 4 applies precise tension compensation to the yarn. This symmetrical adjustment mechanism can balance the tension difference of multiple yarns at the same time, avoid secondary tension imbalance caused by unilateral adjustment, and ensure the stability of the yarn transmission process.

[0032] like Figures 1-3As shown, the limiting frame 702 has two T-slots 705. T-blocks 706 are fixedly connected to the outward side of each of the two racks 703. The two T-blocks 706 slide within the two T-slots 705 respectively. The limiting frame 702 cooperates with the T-blocks 706 of the racks 703 through the T-slots 705 to form a vertical motion guide structure. When the rack 703 is driven by the gear disk 6 to generate displacement, the T-blocks 706 slide within the T-slots 705, restricting the rack 703 to move only along a straight trajectory. This guide structure effectively prevents the rack 703 from deflecting or jamming during movement, ensuring that the adjusting mechanism 7 always maintains the preset motion path, thereby ensuring the accuracy and reliability of the displacement of the moving roller 4.

[0033] like Figures 4-7 As shown, multiple limiting mechanisms 8 for limiting the movement roller 4 are fixedly connected inside the frame 1. The limiting mechanism 8 includes multiple sliding rods 801 fixedly connected to the bottom of the frame 1. The two ends of two shafts 704 are respectively located inside the multiple sliding rods 801. The two ends of the two shafts 704 are rotatably connected to limiting plates 802 that are slidably connected to the multiple sliding rods 801. The limiting mechanism 8 adopts a combination structure of sliding rods 801 and limiting plates 802. When the movement roller 4 is driven by the adjusting mechanism 7 to generate displacement, the limiting plates 802 at both ends of shafts 704 slide outside the sliding rods 801, forming a horizontal movement constraint. This structure ensures that the movement roller 4 maintains a horizontal displacement state through multi-point support, avoids tilting and displacement caused by gravity or external force, and disperses the radial force borne by the movement roller 4, extending the service life of the equipment and improving the stability of tension adjustment.

[0034] like Figures 4-5 As shown, a sensing mechanism 9 is installed on one side of one of the guide rollers 2. The sensing mechanism 9 includes a third bracket 901 fixedly connected to one side of the inner wall of the frame 1. Multiple pressure sensors 902 are installed on the top of the third bracket 901. A sensing plate 903 is fixedly connected to the top of the multiple pressure sensors 902. Multiple polyester low-elasticity yarns 3 are in contact with the top of the sensing plate 903. A controller 904 electrically connected to the pressure sensors 902 is fixedly connected to the top of the third bracket 901. A motor 502 is electrically connected to the controller 904. The sensing mechanism 9 collects the contact pressure data between the yarn and the sensing plate 903 in real time through the pressure sensors 902. When the yarn tension changes, the pressure sensor 902 at the corresponding position transmits the signal to the controller 904, triggering the motor 502 to start the adjustment program. This pressure sensing mechanism can realize real-time monitoring of the yarn status, accurately identify the location of abnormal tension through multi-point pressure detection, and form a closed-loop control with the automatic adjustment system, effectively preventing yarn breakage accidents, reducing the need for manual inspection, and improving the automation level of the equipment.

[0035] In use, this invention utilizes a frame 1 to support the overall structure. Two guide rollers 2 guide multiple polyester low-elasticity yarns 3 along a preset path. A moving roller 4, under the action of a toothed disc 6, moves perpendicular to the ground, adjusting the yarn tension distribution in real time. When a pressure sensor 902 detects abnormal yarn tension, the toothed disc 6 drives the racks 703 on both sides to move synchronously. The meshing transmission between the toothed disc 6 and the racks 703 converts the rotational motion into a horizontal pushing and pulling force, causing the moving roller 4 to apply a reverse compensating force to the abnormal tension area. When the yarn is too taut, the two moving rollers 4 move closer together to relax the tension between the yarns and prevent breakage. When the yarn is too loose, the two moving rollers 4 move further apart to tighten the yarn, thus balancing the yarn tension. For adjustment; during this process, the cooperation between the sliding rod 801 and the limiting plate 802 ensures that the moving roller 4 always maintains a horizontal displacement trajectory, preventing tilting or deviation caused by gravity or external force. At the same time, the guiding structure of the T-slot 705 and the T-block 706 restricts the rack 703 to move only along a straight trajectory, avoiding deflection or jamming during adjustment. The pressure sensor 902 collects the contact pressure data between the yarn and the sensing plate 903 in real time. When a sudden change in tension is detected, the controller 904 immediately starts the motor 502 to drive the gear plate 6 to rotate, triggering the adjustment program to form a closed-loop control. Finally, the symmetrical position adjustment of the moving roller 4 balances the tension difference between the yarns, effectively preventing the risk of yarn breakage and improving the adaptability of the equipment to yarns of different specifications.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for preventing breakage of polyester low-stretch yarn comprising a frame (1), characterized in that: Two guide rollers (2) are rotatably connected inside the frame (1), and multiple polyester low elastic yarns (3) slide between the two guide rollers (2). Two movable rollers (4) that are in contact with the polyester low elastic yarns (3) are slidably connected inside the frame (1). A drive mechanism (5) is installed inside the frame (1). A toothed disc (6) is fixedly connected to the output end of the drive mechanism (5). Adjustment mechanisms (7) that are connected to the two movable rollers (4) are engaged on both sides of the toothed disc (6). The frame (1) is fixedly connected with a plurality of limiting mechanisms (8) for limiting the movement roller (4), and a sensing mechanism (9) is installed on one side of one of the guide rollers (2).

2. The anti-breakage device for polyester low-stretch yarn according to claim 1, characterized in that: The drive mechanism (5) includes a first bracket (501) fixedly connected to the inner wall of the frame (1), a motor (502) is installed in the first bracket (501), and the output end of the motor (502) is fixedly connected to a rotating shaft (503) fixedly connected to the center of the gear plate (6).

3. The anti-breakage device for polyester low-stretch yarn according to claim 2, characterized in that: The adjustment mechanism (7) includes a second bracket (701) fixedly connected in the frame (1), the rotating shaft (503) is rotatably connected to the second bracket (701), the second bracket (701) is fixedly connected to a limiting frame (702), and two racks (703) that mesh with each other on both sides of the gear disk (6) are slidably connected in the limiting frame (702). The rear ends of the two racks (703) are rotatably connected to shafts (704), and the two moving rollers (4) are fixedly connected to the two shafts (704) respectively.

4. The anti-break device for polyester low-stretch yarn according to claim 3, characterized in that: The limiting frame (702) has two T-slots (705) inside, and T-blocks (706) are fixedly connected to the outward side of the two racks (703). The two T-blocks (706) slide in the two T-slots (705) respectively.

5. The anti-break device for polyester low-stretch yarn according to claim 3, characterized in that: The limiting mechanism (8) includes multiple sliding rods (801) fixedly connected to the bottom of the frame (1). The two ends of the two shafts (704) are respectively located in the multiple sliding rods (801). The two ends of the two shafts (704) are rotatably connected to limiting plates (802) that are slidably connected to the multiple sliding rods (801).

6. The polyester low-elasticity yarn anti-breakage device according to claim 2, characterized in that: The sensing mechanism (9) includes a third bracket (901) fixedly connected to one side of the inner wall of the frame (1). Multiple pressure sensors (902) are installed on the top of the third bracket (901). A sensing plate (903) is fixedly connected to the top of the multiple pressure sensors (902). Multiple polyester low-elastic yarns (3) are in contact with the top of the sensing plate (903). A controller (904) electrically connected to the pressure sensors (902) is fixedly connected to the top of the third bracket (901). The motor (502) is electrically connected to the controller (904).

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