Tension adjusting device of circular knitting machine
By designing a combination device of yarn guide wheel, press wheel, motor and controller in a large circular machine, and adjusting the motor torque using the controller, the complex problem of yarn tension adjustment in the prior art is solved, and the rapid yarn tension is achieved. Stabilize the effect of adjusting and preventing yarn from breaking.
Patent Information
- Application Number
- CN202323625047.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-29
AI Technical Summary
The existing large circular machine yarn tension adjustment device has complicated operation and is not convenient to quickly adjust yarn tension.
A tension adjustment device including a yarn guide wheel, a pressure wheel, a motor and a controller is designed. The controller adjusts the current input by the motor in real time to generate a torque opposite to the direction of the yarn conveying to adjust the tension of the yarn, and Equipped with tension detection sensors to monitor and feedback yarn tension in real time to ensure stability.
It realizes rapid and convenient adjustment of yarn tension, ensuring stable tension during the yarn during the conveying process and preventing yarn from breaking.
Smart Images
Figure CN222274880U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of large circular knitting machines, in particular to a tension regulating device for large circular knitting machines. Background Art
[0002] Circular knitting machine, scientifically known as circular weft knitting machine, when the yarn of the circular knitting machine is too loose during transportation, it will affect the quality of subsequent knitted products, so a tension adjustment device is required.
[0003] For example, a large circular knitting machine yarn tension adjustment device disclosed in the authorization announcement number CN213679253U, the principle of the device is that when the position of the wire wheel needs to be controlled, the limit ring is controlled by the handheld part to slide in the direction away from the bottom plate. When the side of the positioning block away from the bottom plate abuts against the groove wall of the sliding groove away from the bottom plate, the positioning block is controlled by the handheld part again to move circumferentially in the rotating groove around the axis of the abutment ring. When the positioning block slides to the position of the plug-in groove, the positioning block is plugged into the plug-in groove. After that, the cylinder is controlled to slide in the direction away from the bottom plate and completely disengage from the limit groove. After that, the cylinder can be rotated. Since the limit cover restricts the movement of the cylinder, the two cylinders are indirectly restricted to each other. When the upper cylinder rotates, the screw piston slides back and forth along the length direction of the cylinder under the action of the screw nut, thereby controlling the position of the wire wheel, thereby controlling the tension of the yarn.
[0004] However, the above structure is complicated to operate and is not convenient for quickly adjusting the yarn tension. Utility Model Content
[0005] In order to solve the above technical deficiencies, the utility model provides a tension regulating device for a large circular knitting machine, which can quickly adjust the yarn tension.
[0006] The utility model discloses a tension regulating device for a large circular knitting machine, comprising a No. 1 U-shaped mounting frame with an opening downward, a yarn guide wheel is rotatably arranged at the lower end of the No. 1 U-shaped mounting frame, a yarn guide groove is arranged outside the yarn guide wheel, a plurality of through holes are vertically arranged at the upper end of the No. 1 U-shaped mounting frame, a slide rod is slidably arranged in the through hole, a counterweight block is arranged at the upper end of the slide rod, a No. 2 U-shaped mounting frame with an opening downward is arranged at the lower end of the slide rod, a pressure wheel is rotatably arranged at the lower end of the No. 2 U-shaped mounting frame, the central axis of the pressure wheel is parallel to the central axis of the yarn guide wheel, the pressure wheel is pressed against the yarn guide groove on the yarn guide wheel, and also comprises a motor and a controller, the No. 1 U-shaped mounting frame is provided with a motor, the rotating shaft of the motor is transmission-connected to the yarn guide wheel, and the motor is electrically connected to the controller.
[0007] The principle of the above scheme is to install No. 1 U-shaped mounting frame on the large circular machine or the yarn frame, wind the yarn led out from the yarn frame around the upper side of the yarn guide wheel, and then feed it into the large circular machine. The pressure wheel is pressed on the yarn on the yarn guide wheel through the counterweight block. When the yarn is being transported, the yarn drives the yarn guide wheel and the pressure wheel to rotate together. When the yarn tension is too small, current is supplied to the motor through the controller to make the motor generate a torque opposite to the direction of yarn transportation to apply force in the opposite direction, so as to make the yarn straighter and increase the yarn tension. When the yarn tension is too large, the current input to the motor is reduced through the controller to reduce the torque, thereby reducing the yarn tension.
[0008] Furthermore, it also includes a tension detection sensor, which is electrically connected to the controller. When in use, the tension detection sensor is arranged on the large circular knitting machine to detect the tension of the yarn. The tension of the yarn is fed back in real time through the tension detection sensor. The controller controls the current input to the motor in real time to stabilize the tension of the yarn. At the same time, when the tension of the yarn suddenly increases, the controller can also cut off the power supply to the motor to prevent the yarn from being broken.
[0009] Preferably, the pressing wheel is a rubber wheel, which has large friction and is elastic, is not easy to slip and is not easy to damage the yarn.
[0010] The utility model provides a large circular knitting machine tension adjustment device, which has the beneficial effect of controlling the current of the input motor through a controller to generate a torque opposite to the yarn conveying direction, thereby changing the size of the reverse force, and finally realizing the adjustment of the yarn tension, and the adjustment is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the structure of Example 1 of the utility model. DETAILED DESCRIPTION
[0012] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.
[0013] Embodiment 1:
[0014] like Figure 1As shown, the utility model discloses a tension adjustment device for a large circular knitting machine, comprising a No. 1 U-shaped mounting frame 5 opening downward, a yarn guide wheel 6 is rotatably provided at the lower end of the No. 1 U-shaped mounting frame 5, a yarn guide groove is provided on the outer side of the yarn guide wheel 6, a plurality of through holes are vertically provided at the upper end of the No. 1 U-shaped mounting frame 5, a slide rod 2 is slidably provided in the through hole, a counterweight block 1 is provided at the upper end of the slide rod 2, a No. 2 U-shaped mounting frame 3 opening downward is provided at the lower end of the slide rod 2, a pressure wheel 4 is rotatably provided at the lower end of the No. 2 U-shaped mounting frame 3, the pressure wheel 4 adopts a rubber wheel, the central axis of the pressure wheel 4 is parallel to the central axis of the yarn guide wheel 6, the pressure wheel 4 is pressed against the yarn guide groove on the yarn guide wheel 6, and also comprises a motor 7, a controller, and a tension detection sensor, the No. 1 U-shaped mounting frame 5 is provided with a motor 7, the rotating shaft of the motor 7 is transmission-connected to the yarn guide wheel 6, and the motor 7 and the tension detection sensor are electrically connected to the controller.
[0015] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used only 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" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0016] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be an interactive relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0017] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0018] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simplified modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.
Claims
1. A tension adjustment device for a circular knitting machine, characterized in that: The invention comprises a first U-shaped mounting frame (5) opening downwards, a yarn guide wheel (6) being rotatably arranged at the lower end of the first U-shaped mounting frame (5), a yarn guide groove being arranged outside the yarn guide wheel (6), a plurality of through holes being vertically arranged at the upper end of the first U-shaped mounting frame (5), a slide bar (2) being slidably arranged in the through hole, a counterweight block (1) being arranged at the upper end of the slide bar (2), a second U-shaped mounting frame (3) opening downwards being arranged at the lower end of the slide bar (2), a pressure wheel (4) being rotatably arranged at the lower end of the second U-shaped mounting frame (3), the central axis of the pressure wheel (4) being parallel to the central axis of the yarn guide wheel (6), the pressure wheel (4) being pressed against the yarn guide groove on the yarn guide wheel (6), and a motor (7) and a controller. The first U-shaped mounting frame (5) is provided with a motor (7), the rotating shaft of the motor (7) being transmission-connected to the yarn guide wheel (6), and the motor (7) being electrically connected to the controller.
2. A circular knitting machine tension adjustment device according to claim 1, characterized in that: It also includes a tension detection sensor, which is electrically connected to the controller.
3. A circular knitting machine tension adjustment device according to claim 1, characterized in that: The pressing wheel (4) is a rubber wheel.