Drawing frame guide frame with tension self-adjusting function

Abstract

The utility model discloses a tension self-adjusting drawing frame guide frame which comprises a guide frame body, and an infrared detection mechanism, a controller, a first driving motor, a first guide roller, a tension detection mechanism, an adjusting mechanism, a second driving motor and a second guide roller are sequentially arranged in the guide frame body in the advancing direction of spinning fiber strips. A tension detection mechanism is arranged to detect the tension of each spinning fiber rod and feed the tension back to a control unit, and the control unit adjusts the position of a roller to accurately adjust and control the tension of each spinning fiber rod, so that the tension of each spinning fiber rod is consistent; the spinning fiber strips are prevented from loosening and slipping in the conveying process, and the yarn forming quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of drawing frame technology, specifically a tension-adjustable drawing frame guide. Background Technology

[0002] A drawing frame is a spinning machine that processes several combed or carded fiber slivers into fiber slivers with specific quality requirements. The function of the drawing frame is to improve the internal structure of the sliver, thereby increasing its long-segment uniformity, reducing weight unevenness, straightening and paralleling the fibers in the sliver, reducing hooks, ensuring the fineness meets specifications, and uniformly blending different types or qualities of raw materials to achieve a specified blending ratio. A drawing frame is usually equipped with a guiding mechanism to guide the slivers output from the preceding process forward along a predetermined trajectory for uniform transport.

[0003] For example, Chinese invention patent CN222332172U, published on January 10, 2025, discloses a guide frame for a drawing frame, including a guide frame body and a roller shaft mounted on the guide frame body. A guide roller is installed on the roller shaft. The guide frame for the drawing frame also includes: a drive assembly for driving the roller shaft and the guide roller to rotate; a mounting frame, which is disposed inside the guide frame body; and a support rod, which is installed on the guide frame body. In use, according to the diameter of the sliver, the gap between the pressure condition and the guide roller is adjusted by bolts set on the side end of the sliding seat, thereby controlling the tension of the sliver during the conveying process. This, together with the drive assembly, drives the roller shaft and the guide roller to rotate, so as to achieve stable conveying of the sliver and avoid the sliver from becoming loose or slipping during the conveying process, thus ensuring the quality of the yarn.

[0004] As can be seen from the above patents, the guide frame of the drawing frame controls the tension of the spun yarn during the conveying process by adjusting the gap between the pressure condition and the guide roller. However, in actual use, multiple spun yarns enter the guide frame simultaneously and are dynamically changing, making it difficult to ensure precise adjustment and control of the tension of each spun yarn to make the tension on each spun yarn consistent. Therefore, this invention provides a tension-self-adjusting guide frame for the drawing frame to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a tension-self-adjusting draw frame guide.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A tension-adjustable draw frame guide includes a guide frame body. Within the guide frame body, along the forward direction of the spinning fiber sliver, an infrared detection mechanism, a first guide roller, a tension detection mechanism, an adjustment mechanism, and a second guide roller are sequentially arranged. The adjustment mechanism includes a plurality of rollers, which are evenly spaced in a direction perpendicular to the forward direction of the spinning fiber sliver. The center of each roller is rotatably connected to the front end of an electric telescopic rod via a rotating shaft. The electric telescopic rod is slidably connected within a sleeve, which is fixedly mounted on the guide frame body. The adjustment mechanism also includes a control unit, which is fixedly mounted on the guide frame body.

[0008] Preferably, the tension detection mechanism includes a plurality of sensors corresponding to the number of rollers, the top sensing head of the sensor abuts against the bottom of the movable block, the two ends of the movable block are movably embedded in the slots of the fixed bracket, and a guide hole is provided on the top of the movable block.

[0009] Preferably, the control unit is electrically connected to both the electric telescopic rod and the sensor.

[0010] Preferably, a controller and a first drive motor are further provided between the infrared detection mechanism and the first guide roller. The controller is electrically connected to the infrared detection mechanism and the first drive motor respectively, and the output end of the first drive motor is connected to the first guide roller via a belt.

[0011] Preferably, a second drive motor is also provided at the second guide roller, the output end of the second drive motor is connected to the second guide roller via a belt, and the second drive motor and the controller are electrically connected.

[0012] Preferably, the infrared detection mechanism includes infrared detectors disposed on both sides of the guide frame body.

[0013] The beneficial effects of this utility model are:

[0014] A tension detection mechanism is set up to detect the tension of each yarn fiber sliver and feed the feedback to the control unit. The control unit then adjusts the position of the rollers to precisely adjust and control the tension of each yarn fiber sliver, ensuring that the tension on each yarn fiber sliver is consistent. This prevents the yarn fiber sliver from becoming loose or slipping during the conveying process, thus guaranteeing the quality of the yarn. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0017] Figure 1 This is a front view structural diagram of the present utility model;

[0018] Figure 2 This is a top view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the adjustment mechanism;

[0020] Figure 4 This is a schematic diagram of the tension detection mechanism;

[0021] The figure shows: 1. Guide frame body; 2. Infrared detection mechanism; 3. First guide roller; 4. Tension detection mechanism; 41. Sensor; 42. Movable block; 43. Fixed bracket; 44. Guide hole; 5. Adjustment mechanism; 51. Roller; 52. Electric telescopic rod; 53. Sleeve; 54. Control unit; 6. Second guide roller; 7. Controller; 8. First drive motor; 9. Second drive motor. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0025] It should be noted that similar labels and letters are likely to represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Reference Figure 1-4 The present invention discloses a tension self-adjusting drawing frame guide frame, comprising a guide frame body 1, wherein an infrared detection mechanism 2, a controller 7, a first drive motor 8, a first guide roller 3, a tension detection mechanism 4, an adjustment mechanism 5, a second drive motor 9, and a second guide roller 6 are sequentially arranged inside the guide frame body 1 along the forward direction of the spinning fiber strip.

[0029] The infrared detection mechanism 2 includes infrared detectors installed on both sides of the guide frame body 1 to detect whether the spun yarn fiber strip is loose. The controller 7 is electrically connected to the infrared detection mechanism 2 and the first drive motor 8 respectively. The output end of the first drive motor 8 is connected to the first guide roller 3 via a belt. If the spun yarn fiber strip is loose, it will droop and be detected by the infrared detector. The infrared detection mechanism 2 transmits the signal to the controller 7, which adjusts the speed of the first drive motor 8 and then adjusts the speed of the first guide roller 3 via the belt to speed up the transmission speed of the spun yarn fiber strip and improve the loose state of the spun yarn fiber strip. The looseness of the spun yarn fiber strip is adjusted for the first time before the tension detection mechanism 4.

[0030] The tension detection mechanism 4 includes several sensors 41. The top sensing head of the sensor 41 abuts against the bottom of the movable block 42. The two ends of the movable block 42 are movably embedded in the slots of the fixed bracket 43. A guide hole 44 is provided on the top of the movable block 42. When the spun yarn passes through the guide hole 44, it will squeeze the movable block 42. The movable block 42 moves up and down, transmitting this pressure to the sensor 41. The sensor 41 converts the force signal into an electrical signal and transmits it to the adjustment mechanism 5.

[0031] The adjusting mechanism 5 includes several rollers 51, each equal in number to and corresponding to a sensor 41. The rollers 51 and sensors 41 are evenly spaced in a direction perpendicular to the direction of the spinning fiber. The center of each roller 51 is rotatably connected to the front end of an electric telescopic rod 52 via a rotating shaft. The electric telescopic rod 52 is slidably connected within a sleeve 53. The sleeve 53 and the control unit 54 are fixedly mounted on the guide frame body 1. When the control unit 54 receives a signal from the sensor 41, it adjusts and controls the extension or retraction of the electric telescopic rod 52, thereby moving the rollers 51 up and down to adjust their height. This allows for real-time and precise adjustment and control of the tension on each spinning fiber, ensuring consistent tension on each fiber and preventing slackness and slippage during transport, thus guaranteeing yarn quality.

[0032] In an optional embodiment, a second drive motor 9 is also provided at the second guide roller 6. The output end of the second drive motor 9 is connected to the second guide roller 6 via a belt. The second drive motor 9 drives the second guide roller 6 to rotate via the belt. The second drive motor 9 is electrically connected to the controller 7, and the controller 7 controls the second drive motor 9. The curved drafting formed by the first guide roller 3, the several rollers 51 of the adjusting mechanism 5, and the second guide roller 6 can create an additional frictional force boundary, effectively controlling the floating fibers and improving the uniformity of the yarn.

[0033] The workflow of this utility model is as follows:

[0034] Multiple slivers of spinning fibers first reach the infrared detection mechanism 2 along the conveying direction within the guide frame body 1. The infrared detection mechanism 2 detects whether the slivers of spinning fibers are slack. If the slivers of spinning fibers are not slack, the infrared detector cannot detect the drooping slivers of spinning fibers, and it does not affect normal operation. If the slivers of spinning fibers are slack, the infrared detector can detect the drooping slivers of spinning fibers. The infrared detection mechanism 2 transmits a signal to the controller 7, which adjusts the speed of the first drive motor 8 and then adjusts the speed of the first guide roller 3 via the belt to accelerate the transmission speed of the slivers of spinning fibers and improve the slack state of the slivers of spinning fibers. The slack of the slivers of spinning fibers is adjusted for the first time before the tension detection mechanism 4.

[0035] After the first adjustment, the spun yarn continues to be conveyed forward to the tension detection mechanism 4. When the spun yarn passes through the guide hole 44, it will squeeze the movable block 42. The movable block 42 moves up and down, transmitting this pressure to the sensor 41. The sensor 41 converts the force signal into an electrical signal and transmits it to the control unit 54 of the adjustment mechanism 5. The control unit 54 adjusts and controls the extension or shortening of the electric telescopic rod 52, which in turn drives the roller 51 to move up and down. Adjusting the height of the roller 51 allows for real-time and precise adjustment and control of the tension of each spun yarn, ensuring that the tension on each spun yarn is consistent. That is, the adjustment mechanism 5 performs a second adjustment to the slack of the spun yarn, preventing the spun yarn from becoming loose or slipping during the conveying process and ensuring the quality of the yarn.

[0036] After the second adjustment, the spun fiber sliver continues to be conveyed forward to the second guide roller 6. The controller 7 controls the second drive motor 9, which in turn drives the second guide roller 6 to rotate via a belt. This causes the spun fiber sliver to be drawn in a curved manner, which can form an additional frictional force boundary, effectively control the floating fibers, and help improve the evenness of the yarn.

[0037] Of course, the embodiments described in this specific implementation are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A tension-self-adjusting draw frame guide frame, comprising a guide frame body (1), wherein an infrared detection mechanism (2), a first guide roller (3), a tension detection mechanism (4), an adjustment mechanism (5), and a second guide roller (6) are sequentially arranged within the guide frame body (1) along the forward direction of the spinning fiber sliver, characterized in that: The adjustment mechanism (5) includes a plurality of rollers (51), which are evenly spaced in a direction perpendicular to the direction of the spinning fiber. The center of each roller (51) is rotatably connected to the front end of an electric telescopic rod (52) via a rotating shaft. The electric telescopic rod (52) is slidably connected to a sleeve (53), which is fixedly installed on the guide frame body (1). The adjustment mechanism (5) also includes a control unit (54), which is fixedly installed on the guide frame body (1).

2. A tension-self-adjusting draw frame guide according to claim 1, characterized in that: The tension detection mechanism (4) includes a number of sensors (41) corresponding to the number of rollers (51). The top sensing head of the sensor (41) abuts against the bottom of the movable block (42). The two ends of the movable block (42) are movably embedded in the slots of the fixed bracket (43). A guide hole (44) is provided on the top of the movable block (42).

3. A tension-self-adjusting draw frame guide according to claim 2, characterized in that: The control unit (54) is electrically connected to the electric telescopic rod (52) and the sensor (41) respectively.

4. A tension-self-adjusting draw frame guide according to claim 1, characterized in that: A controller (7) and a first drive motor (8) are also provided between the infrared detection mechanism (2) and the first guide roller (3). The controller (7) is electrically connected to the infrared detection mechanism (2) and the first drive motor (8) respectively. The output end of the first drive motor (8) is connected to the first guide roller (3) via a belt.

5. A tension-self-adjusting draw frame guide according to claim 4, characterized in that: A second drive motor (9) is also provided at the second guide roller (6). The output end of the second drive motor (9) is connected to the second guide roller (6) via a belt. The second drive motor (9) and the controller (7) are electrically connected.

6. A tension-self-adjusting draw frame guide according to claim 1, characterized in that: The infrared detection mechanism (2) includes infrared detectors disposed on both sides of the guide frame body (1).

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