Automatic adjustable tension rod mechanism

Abstract

According to the automatic adjustable tension rod mechanism, one end of a torque output shaft is rotationally connected to the interior of a machine shell, the torque output shaft is rotationally connected with a worm wheel and fixedly connected with a supporting ring, the worm wheel and the supporting ring are oppositely arranged, the torque output shaft is sleeved with a torsion spring, one end of the torsion spring is fixedly connected to the worm wheel, and the other end of the torsion spring is fixedly connected to the supporting ring; the tension rod shaft is connected to the output end of the torque output shaft; an output shaft of the stepping motor is a worm which is in transmission connection with the worm gear. According to the automatic adjustable tension rod mechanism, the torque output adjustment is accurate, the action of manually adjusting the torsion spring can be replaced, and the output tension of the tension rod shaft can be automatically adjusted; in addition, the mechanism can utilize the self-locking principle of worm and gear transmission, and after tension adjustment is completed, a power supply of the stepping motor can be turned off, so that the mechanism keeps constant tension without consuming any electric energy.

Description

Technical Field

[0001] The utility model belongs to the field of tension regulating devices, and in particular relates to an automatically adjustable tension rod mechanism. Background Art

[0002] In the textile or plastic weaving production process, a tension rod is needed to adjust the tension of the thread to achieve the appropriate tension to ensure the stable operation of the equipment. Before the present application was made, the traditional tension rod mechanism obtained different tension outputs by manually adjusting the torsion spring. The manual adjustment of the torsion spring is cumbersome and not accurate enough, so an automatically adjustable tension rod mechanism is urgently needed. Utility Model Content

[0003] Based on the content in the background technology, the utility model discloses an automatically adjustable tension rod mechanism, which can save the cumbersome and inaccurate manual adjustment of the torsion spring.

[0004] An automatically adjustable tension rod mechanism is disclosed, which comprises a torque output shaft, a housing, a worm gear, a support ring, a torsion spring, a tension rod shaft, a stepping motor and a worm;

[0005] One end of the torque output shaft is rotatably connected to the inside of the housing, a worm gear is rotatably connected to the torque output shaft and a support ring is fixedly connected to the worm gear and the support ring is arranged opposite to each other, the torsion spring is sleeved on the torque output shaft, one end of the torsion spring is fixedly connected to the end face of the worm gear, the other end of the torsion spring is fixedly connected to the end face of the support ring, and the tension rod shaft is connected to the output end of the torque output shaft;

[0006] The output shaft of the stepper motor is a worm, and the worm is connected to the worm wheel, that is, the spiral teeth of the worm are meshed with the gear block of the worm wheel, and the stepper motor can be actuated under the input of a signal, and the signal control method is a prior art; in this way, the worm can be controlled to rotate under the drive of the stepper motor, and the worm drives the worm wheel to rotate, thereby driving the torsion spring to rotate, and the torsion spring then transmits the torsion force to the torque output shaft through the support ring, and the torque output by the torque output shaft can drive the tension rod shaft to adjust the tension, and the tension rod shaft can meet the tension adjustment requirements of different production processes according to different settings. And the above-mentioned automatically adjustable tension rod mechanism can utilize the self-locking principle of the worm gear transmission. When the tension adjustment is completed, the power supply of the stepper motor can be turned off, so that the mechanism maintains a constant tension without consuming any electrical energy.

[0007] Preferably, a bearing is provided between the torque output shaft and the inner wall of the casing to realize rotational connection of one end of the torque output shaft to the inside of the casing.

[0008] Preferably, the worm wheel and the support ring are also located in the casing, a bearing is provided between the worm wheel and the torque output shaft to achieve a rotational connection, and a key and a keyway are used to achieve a fixed connection between the support ring and the torque output shaft.

[0009] Preferably, the body of the stepper motor is installed outside the casing, and the worm of the stepper motor is also located inside the casing.

[0010] Through the above technical solution, the utility model at least includes the following beneficial effects:

[0011] 1. The automatically adjustable tension rod mechanism described in the present application has precise torque output adjustment. The worm gear is driven by a stepper motor to drive the torsion spring to rotate. The torsion spring then transmits the torque to the torque output shaft through the support ring. The torque output by the torque output shaft can drive the tension rod shaft to adjust the tension, which can replace the manual adjustment of the torsion spring and realize automatic adjustment of the output tension of the tension rod shaft.

[0012] 2. The automatically adjustable tension rod mechanism can utilize the self-locking principle of worm gear transmission. When the tension is adjusted, the power supply of the stepper motor can be turned off, so that the mechanism maintains a constant tension output without consuming any electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of an automatically adjustable tension rod mechanism described in an embodiment of the present application;

[0014] Figure 2 It is a schematic diagram of the structure inside the casing of an automatically adjustable tension rod mechanism described in an embodiment of the present application. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the structures related to the present invention.

[0016] In the description of this application, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship are only used for exemplary description and cannot be understood as limiting this patent; if there are terms such as "first", "second", etc., they are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the said features. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0017] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0018] refer to Figure 1 and Figure 2 An automatically adjustable tension rod mechanism comprises a torque output shaft 1, a housing 2, a worm gear 3, a support ring 4, a torsion spring 5, a tension rod shaft, a stepping motor 6 and a worm 7;

[0019] One end of the torque output shaft 1 is rotatably connected to the inside of the casing 2, and a bearing 8 is provided between the torque output shaft 1 and the inner wall of the casing 2 to realize the rotational connection. A worm gear 3 is rotatably connected to the torque output shaft 1 and a support ring 4 is fixedly connected thereto. Specifically, a bearing is provided between the worm gear 3 and the torque output shaft 1 to realize the rotational connection, and the support ring 4 and the torque output shaft 1 are fixedly connected by a key and a keyway. The worm gear 3 and the support ring 4 are arranged opposite to each other, and of course the worm gear 3 and the support ring 4 are also located in the casing 2. The torsion spring 5 is sleeved on the torque output shaft 1, and one end of the torsion spring 5 is fixedly connected to the end face of the worm gear 3, and the other end of the torsion spring 5 is fixedly connected to the end face of the support ring 4, and the tension rod shaft is connected to the output end of the torque output shaft 1;

[0020] The output shaft of the stepper motor 6 is a worm 7, and the worm 7 is connected to the worm wheel 3 by transmission, that is, the helical teeth of the worm 7 are meshed with the gear block of the worm wheel 3 for transmission. The body of the stepper motor 6 is installed outside the housing 2, and the worm 7 of the stepper motor 6 is also located inside the housing 2. The stepper motor 6 can be operated under the input of a signal, and the signal control method is the existing technology; in this way, the worm 7 can be controlled to rotate under the drive of the stepper motor 6, and the worm 7 drives the worm wheel 3 to rotate, thereby driving the torsion spring 5 to rotate, and the torsion spring 5 then transmits the torsion force to the torque output shaft 1 through the support ring 4. The torque output by the torque output shaft 1 can drive the tension rod shaft to adjust the tension. The tension rod shaft can meet the tension adjustment requirements of different production processes according to different setting methods. In addition, the above-mentioned automatically adjustable tension rod mechanism can utilize the self-locking principle of the worm gear transmission. When the tension adjustment is completed, the power supply of the stepper motor 6 can be turned off, so that the mechanism maintains a constant tension without consuming any electric energy. .

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Based on the present invention and the above description, relevant personnel can make various changes and modifications without departing from the technical idea of ​​the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatically adjustable tension rod mechanism, characterized in that: It comprises a torque output shaft (1), a housing (2), a worm gear (3), a support ring (4), a torsion spring (5), a tension rod shaft, a stepping motor (6) and a worm (7); One end of the torque output shaft (1) is rotatably connected to the inside of the housing (2); a worm gear (3) is rotatably connected to the torque output shaft (1) and a support ring (4) is fixedly connected to the worm gear (3) and the support ring (4) are arranged opposite to each other; the torsion spring (5) is sleeved on the torque output shaft (1); one end of the torsion spring (5) is fixedly connected to the worm gear (3); the other end of the torsion spring (5) is fixedly connected to the support ring (4); the tension rod shaft is connected to the output end of the torque output shaft (1); the output shaft of the stepping motor (6) is a worm gear (7); the worm gear (7) and the worm gear (3) are drivingly connected.

2. The automatically adjustable tension rod mechanism according to claim 1, characterized in that: A bearing (8) is provided between the torque output shaft (1) and the inner wall of the casing (2) to enable one end of the shaft to be rotatably connected to the inside of the casing (2).

3. The automatically adjustable tension rod mechanism according to claim 1, characterized in that: The worm wheel (3) and the support ring (4) are also located in the housing (2); a bearing is provided between the worm wheel (3) and the torque output shaft (1) to achieve a rotational connection; a key and a keyway are used to achieve a fixed connection between the support ring (4) and the torque output shaft (1).

4. The automatically adjustable tension rod mechanism according to claim 1, characterized in that: The body of the stepper motor (6) is installed outside the casing (2), and the worm (7) of the stepper motor (6) is also located inside the casing (2).

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