A yarn tension regulating device

Abstract

The utility model discloses a yarn tension adjusting device, including support frame and fixedly connected on the support frame connecting box, the connecting box is opened with two connection mouths symmetry, and multiple yarns pass through two connection mouths, the inner wall of connecting box is provided with two no.

Description

Technical Field

[0001] This utility model relates to the field of printer technology, and more specifically, to a yarn tension adjustment device. Background Technology

[0002] In textile production, yarn tension control is one of the key factors affecting product quality and production efficiency. Excessive tension can easily lead to yarn breakage, affecting continuous production; while insufficient tension will cause the yarn to slack, resulting in uneven winding, skipped stitches, or warp breaks during weaving. Especially in processes where multiple yarns operate simultaneously, the requirement for tension consistency among the yarns is even higher. Traditional tension adjustment devices mostly use fixed yarn guide wheels or spring pressure rod structures, which have low adjustment accuracy, slow response, and cannot achieve a combination of overall unified adjustment and local adaptive compensation.

[0003] While some existing tension adjustment devices offer a degree of adjustability, they generally suffer from drawbacks such as cumbersome adjustment processes, unreliable locking, and poor dynamic adaptability. For example, the prior art disclosed in CN222683951U adjusts the clamping force via a manual knob, but lacks an effective anti-loosening mechanism, making it prone to rebound under equipment vibration conditions, leading to tension drift. Furthermore, when the yarn contains thick knots, knots, or uneven material, the rigid clamping structure cannot effectively buffer instantaneous tension fluctuations, easily causing yarn breakage. Utility Model Content

[0004] This utility model addresses the technical problems existing in the prior art by providing a yarn tension adjustment device. It solves the problem that the existing technology adjusts the clamping force by manually turning a knob, but lacks an effective anti-loosening mechanism, and is prone to rebound in the event of equipment vibration, resulting in tension drift.

[0005] To achieve the above objectives, this utility model provides a yarn tension adjustment device, including a support frame and a connecting box fixedly connected to the support frame. The connecting box has two symmetrically opened connection ports, through which multiple strands of yarn pass. Two No. 1 rotating rods are symmetrically rotatably connected to the inner wall of the connecting box. Each No. 1 rotating rod is fixedly sleeved with multiple yarn wheels. A tension adjustment component is provided in the connecting box.

[0006] The tension adjustment assembly includes a mounting frame with two symmetrically slidably connected connecting frames. Each connecting frame is rotatably connected to a pressure rod. Multiple No. 1 springs are fixedly connected at equal intervals on the upper end face of each connecting frame. The upper end of each No. 1 spring is fixedly connected to the inner wall of the mounting frame. A downward moving component is provided on the connecting box. The tension adjustment assembly is driven by the downward moving component to press down the yarn and adjust the yarn tension.

[0007] Preferably, the lowering assembly includes a mounting box fixedly connected to the upper surface of the connecting box. The upper end of the mounting box is provided with a handle, and the handle is fixedly connected to a vertical shaft. The vertical shaft passes through the upper surface of the mounting box and the connecting box and is fixedly connected to a threaded rod. The threaded rod is threadedly sleeved with a threaded cylinder, and the lower end of the threaded cylinder is fixedly connected to the mounting frame.

[0008] Preferably, two connecting cylinders are symmetrically fixedly connected to the mounting bracket, and each of the two connecting cylinders is provided with a vertical rod. The upper ends of the two vertical rods are fixedly connected to the inner wall of the connecting box.

[0009] Preferably, a square box is fixedly connected to the mounting box, a gear is fixedly sleeved on the vertical shaft, a connecting hole is opened on the side wall of the square box, a connecting shaft is provided in the connecting hole, a limiting tooth is fixedly connected to one end of the connecting shaft, the limiting tooth is engaged between the adjacent tooth grooves of the gear to limit the rotation of the gear, and a connecting plate is fixedly connected to the other end of the connecting shaft.

[0010] Preferably, a rectangular plate is fixedly sleeved on the connecting shaft, and two No. 2 springs are symmetrically fixedly connected to the rectangular plate. The other ends of the two No. 2 springs are fixedly connected to the inner wall of the square box.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. By setting up a downward moving assembly consisting of a throttle, a threaded rod, and a threaded cylinder, precise lifting and lowering control of the mounting frame and its upper pressing structure can be achieved. Rotating the throttle will drive the pressing rod to press down or move up as a whole, thereby adjusting the degree of bending and effective length of the yarn in the "S" shaped yarn path, realizing continuous, stable, and quantifiable adjustment of yarn tension to meet different process requirements;

[0013] 2. Equipped with a locking mechanism based on gears and retractable limit teeth, when the adjustment is in place, the No. 2 spring automatically resets and pushes the limit teeth into the gear groove to achieve mechanical locking of the vertical shaft. This effectively prevents reverse rotation caused by vibration or load changes during equipment operation, ensures long-term stability of the tension setting value, and improves the reliability of the system. Attached Figure Description

[0014] Figure 1 This is an isometric view of one side of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the connecting box in this utility model;

[0016] Figure 3 This utility model Figure 2 A schematic diagram of the structure at point A.

[0017] The meanings of the labels in the diagram are as follows:

[0018] 1. Support frame; 2. Connecting box; 3. Yarn; 4. No. 1 rotating rod; 5. Yarn reel; 601. Mounting frame; 602. Connecting frame; 603. Pressing rod; 604. No. 1 spring; 701. Mounting box; 702. Turning handle; 703. Vertical shaft; 704. Threaded rod; 705. Threaded cylinder; 706. Connecting cylinder; 707. Vertical rod; 801. Square box; 802. Gear; 803. Limiting tooth; 804. Connecting shaft; 805. Connecting plate; 806. Rectangular plate; 807. No. 2 spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-3 This embodiment provides a yarn tension adjustment device, including a support frame 1 and a connection box 2 fixedly connected to the support frame 1. The connection box 2 has two symmetrically opened connection ports, through which multiple strands of yarn 3 pass. Two No. 1 rotating rods 4 are symmetrically rotatably connected to the inner wall of the connection box 2. Each No. 1 rotating rod 4 is fixedly sleeved with multiple yarn wheels 5. A tension adjustment component is provided in the connection box 2.

[0021] The tension adjustment assembly includes a mounting frame 601, which is symmetrically and slidably connected to two connecting frames 602. Each connecting frame 602 is rotatably connected to a pressing rod 603. Multiple No. 1 springs 604 are fixedly connected at equal intervals on the upper end face of each connecting frame 602. The upper end of each No. 1 spring 604 is fixedly connected to the inner wall of the mounting frame 601. A downward moving component is provided on the connecting box 2. The tension adjustment assembly is driven by the downward moving component to press down the yarn 3 to adjust the tension of the yarn 3.

[0022] The lowering assembly includes a mounting box 701 fixedly connected to the upper surface of the connecting box 2. A handle 702 is provided at the upper end of the mounting box 701. A vertical shaft 703 is fixedly connected to the handle 702. The vertical shaft 703 passes through the upper surface of the mounting box 701 and the connecting box 2 and is fixedly connected to a threaded rod 704. A threaded cylinder 705 is threadedly sleeved on the threaded rod 704. The lower end of the threaded cylinder 705 is fixedly connected to the mounting bracket 601.

[0023] In summary, the improvement of this embodiment lies in:

[0024] By setting up a downward moving assembly consisting of a throttle 702, a threaded rod 704, and a threaded cylinder 705, precise lifting and lowering control of the mounting frame 601 and its upper pressing structure can be achieved. Rotating the throttle 702 can drive the pressing rod 603 to press down or move up as a whole, thereby adjusting the degree of bending and effective length of the yarn in the "S" shaped thread path, realizing continuous, stable, and quantifiable adjustment of yarn tension to meet different process requirements.

[0025] Based on the above, other structures also need to be disclosed in detail, such as:

[0026] Please see Figure 2 In order to limit the threaded cylinder 705, two connecting cylinders 706 are symmetrically fixedly connected to the mounting bracket 601. Each of the two connecting cylinders 706 is provided with a vertical rod 707. The upper ends of the two vertical rods 707 are fixedly connected to the inner wall of the connecting box 2. The threaded cylinder 705 is restricted from rotating by the guiding action of the vertical rods 707 and the connecting cylinders 706.

[0027] Please see Figure 3 Considering that the throttle 702, vertical shaft 703, and threaded rod 704 will rotate in a vibration environment, a square box 801 is fixedly connected to the mounting box 701, and a gear 802 is fixedly sleeved on the vertical shaft 703. A connecting hole is opened on the side wall of the square box 801, and a connecting shaft 804 is installed in the connecting hole. One end of the connecting shaft 804 is fixedly connected to a limiting tooth 803, which engages between adjacent tooth slots of the gear 802 to limit the rotation of the gear. The other end of the connecting shaft 804 is fixedly connected to a connecting plate 805. A rectangular plate 806 is fixedly connected to the rectangular plate 806, and two No. 2 springs 807 are symmetrically fixedly connected to the rectangular plate 806. The other ends of the two No. 2 springs 807 are fixedly connected to the inner wall of the square box 801, which is equipped with a locking mechanism based on gear 802 and retractable limiting teeth 803. When the adjustment is in place, the No. 2 springs 807 automatically reset and push the limiting teeth 803 to engage with the tooth groove of gear 802, realizing the mechanical locking of the vertical shaft. This effectively prevents reverse rotation caused by vibration or load changes during equipment operation, ensures the long-term stability of the tension setting value, and improves the reliability of the system.

[0028] In summary, the working principle of this solution is as follows:

[0029] The multi-strand yarn 3 enters from one side of the connecting port of the connecting box 2, passes through the top of the yarn wheel 5 and the pressing rod 603 and below in sequence, forming an "S" shaped thread path, and finally exits from the other side of the connecting port;

[0030] When it is necessary to increase the yarn tension, the operator first pulls the connecting plate 805 outward. The connecting plate 805 drives the limiting tooth 803 to overcome the elastic force of the second spring 807 and move outward, so that it disengages from the tooth groove of the gear 802 and releases the lock on the gear 802.

[0031] Rotating the handle 702 clockwise causes the vertical shaft 703 and the threaded rod 704 to rotate synchronously. Since the threaded cylinder 705 is restricted from rotating by the guidance of the mounting frame 601, the vertical rod 707, and the connecting cylinder 706, it can only move in the vertical direction. Therefore, the rotating threaded rod 704 will drive the threaded cylinder 705 to move downward in a straight line. The threaded cylinder 705 drives the entire mounting frame 601 and all its components to move smoothly downward along the vertical rod 707. The pressing rod 603 then presses the yarn 3 downward, which intensifies the bending of the yarn 3 between the yarn wheel 5 and the pressing rod 603, and lengthens the effective path, thereby significantly increasing the tension of the yarn.

[0032] After adjusting to the required tension, release the connecting plate 805. The rebound force of the second spring 807 will push the rectangular plate 806 and the connecting shaft 804, causing the limiting tooth 803 to re-engage in the tooth groove of the gear 802, locking the vertical shaft 703 to prevent it from reversing, thus perfectly maintaining the currently set tension.

[0033] When it is necessary to reduce the yarn tension, first pull the connecting plate 805 to unlock it, then rotate the handle 702 counterclockwise. The reverse rotation of the threaded rod 704 will drive the threaded cylinder 705 to move the mounting bracket 601 upward as a whole. The pressure of the pressing rod 603 on the yarn 3 will decrease, the bending degree of the yarn 3 will be eased, and the effective path will be shortened, thereby reducing the yarn tension. After adjustment, loosen the connecting plate 805 and lock it again.

[0034] Since the two connecting frames 602 are independently and slidably connected to the mounting frame 601, and each receives downward pressure through multiple No. 1 springs 604, when the tension of a certain yarn changes instantaneously due to uneven thickness or knots, the pressing rod 603 at that point can buffer the impact force by sliding the connecting frame 602 and extending and retracting the No. 1 springs 604, thereby achieving adaptive fine adjustment of tension, effectively preventing yarn breakage, and ensuring the uniformity and stability of tension control.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A yarn tension adjusting device, comprising a support frame (1) and a connecting box (2) fixedly connected to the support frame (1), wherein the connecting box (2) has two symmetrically opened connecting ports, and multiple strands of yarn (3) pass through the two connecting ports, characterized in that: The inner wall of the connecting box (2) is symmetrically connected to two No. 1 rotating rods (4), and each No. 1 rotating rod (4) is fixedly sleeved with multiple yarn wheels (5). The connecting box (2) is equipped with a tension adjustment component. The tension adjustment component includes a mounting frame (601), which is symmetrically slidably connected to two connecting frames (602). Each of the two connecting frames (602) is rotatably connected to a pressing rod (603). Each connecting frame (602) has multiple No. 1 springs (604) fixedly connected at equal intervals on its upper end face. The upper end of each No. 1 spring (604) is fixedly connected to the inner wall of the mounting frame (601). The connecting box (2) is provided with a downward moving component. The tension adjustment component is driven by the downward moving component to press down the yarn (3) to adjust the tension of the yarn (3).

2. The yarn tension adjusting device according to claim 1, characterized in that: The lowering assembly includes a mounting box (701) fixedly connected to the upper surface of the connecting box (2). The upper end of the mounting box (701) is provided with a throttle (702). The throttle (702) is fixedly connected to a vertical shaft (703). The vertical shaft (703) passes through the upper surface of the mounting box (701) and the connecting box (2) and is fixedly connected to a threaded rod (704). The threaded rod (704) is threadedly sleeved with a threaded cylinder (705). The lower end of the threaded cylinder (705) is fixedly connected to the mounting bracket (601).

3. The yarn tension adjusting device according to claim 2, characterized in that: Two connecting cylinders (706) are symmetrically fixedly connected to the mounting bracket (601). Each of the two connecting cylinders (706) is provided with a vertical rod (707). The upper ends of the two vertical rods (707) are fixedly connected to the inner wall of the connecting box (2).

4. The yarn tension adjusting device according to claim 2, characterized in that: A square box (801) is fixedly connected to the mounting box (701), and a gear (802) is fixedly sleeved on the vertical shaft (703). A connecting hole is provided on the side wall of the square box (801), and a connecting shaft (804) is provided in the connecting hole. A limiting tooth (803) is fixedly connected to one end of the connecting shaft (804). The limiting tooth (803) is engaged between the adjacent tooth slots of the gear (802) to limit the rotation of the gear. A connecting plate (805) is fixedly connected to the other end of the connecting shaft (804).

5. The yarn tension adjusting device according to claim 4, characterized in that: A rectangular plate (806) is fixedly sleeved on the connecting shaft (804), and two No. 2 springs (807) are symmetrically fixedly connected on the rectangular plate (806). The other ends of the two No. 2 springs (807) are fixedly connected to the inner wall of the square box (801).

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