Feeding device of yarn drawing frame for blended yarn fabric
By introducing a PLC controller and a detection circuit in the mechanical structure onto the drawing frame, the problem of yarn breakage detection sensors easily malfunctioning or giving false alarms was solved, thus achieving reliable detection of yarn breakage and production stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-03-24
AI Technical Summary
The yarn breakage detection sensors on existing drawing frames are prone to malfunction or false alarms due to the accumulation of flying fibers and impurities, resulting in the production of substandard products.
The system employs a combination of a PLC controller and detection circuitry with a mechanical structure. Yarn breakage is detected through the contact between a conductive shaft and electrode plates. Changes in yarn tension trigger the circuit's on/off state, thus avoiding false alarms and sensor malfunctions.
It enables reliable detection of yarn breakage, reduces maintenance frequency, and improves production reliability and product quality.
Smart Images
Figure CN224031176U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a yarn drawing frame, especially a yarn drawing frame's feeding device of blended yarn fabric. BACKGROUND
[0002] The drawing frame is the equipment used in the yarn drawing process, and its structure is generally divided into a feeding part, a drafting part and a slivering part. The feeding part is composed of a feeding can, a guide roller, a guide compression roller, a guide platform (or a high stand) and a cotton feeding roller. The cotton is drawn out from the feeding can by the guide roller and the guide compression roller, and is sent to the guide platform in a certain direction. The function of the feeding part is to introduce the yarns into the drafting part in the drawing frame in a side-by-side manner. Since the yarns used in the drawing process have poor tensile strength and the thickness uniformity of each section of the yarns is poor, the yarns are prone to breakage due to the change of the traction resistance during the feeding process. Once the tension is too large, the yarns are prone to breakage. If the equipment continues to run after the yarns break, the products produced after the breakage are unqualified. Therefore, a device for detecting yarn breakage needs to be added to the drawing frame.
[0003] The feeding part of the existing drawing frame generally detects the occurrence of yarn breakage by setting a sensor. Such sensors generally use a non-contact detection method, such as a light sensor. However, due to the limitation of the detection method, the sensor head needs to be kept clean, otherwise false alarms or malfunctions may occur. In actual production, a large amount of flying dust is generated during the operation of the drawing frame. Even if a dust suction component is provided, it is impossible to ensure that all parts of the machine body are clean. In addition, due to static electricity, the sensor head will gradually accumulate flying dust and other impurities, which will cause the sensor to need to be cleaned regularly, otherwise false alarms or malfunctions may occur. SUMMARY
[0004] The utility model provides a kind of yarn drawing frame's feeding device of blended yarn fabric;Solve the problem that the sensor for detecting yarn breakage on drawing frame in prior art is prone to malfunction or false alarm.
[0005] The utility model discloses a yarn drawing frame's feeding device of blended yarn fabric mainly solves above-mentioned technical problem through the following technical scheme: a kind of yarn drawing frame's feeding device of blended yarn fabric, including mounting bracket and the feeding module of being equipped with several thereof, the feeding module is horizontally arrayed distribution on the mounting bracket, the feeding module is constituted by feeding can, first support and second support, the feeding can is horizontally rotatably installed on the mounting bracket, the mounting bracket is equipped with the drive module of driving all the feeding can synchronous rotation, the first support and the second support are fixedly installed on the mounting bracket and located the front and back sides of the feeding can, the highest point of the feeding can is higher than two supports, first sliding frame is slidably assembled on the first support along its length direction, the first sliding frame is equipped with threading hole, second sliding frame is slidably assembled on the second support along its length direction, horizontal rotation is connected with swing bar on the second sliding frame, horizontal electrically conductive shaft is equipped on the swing bar, pressure roller is rotatably equipped on the electrically conductive shaft, electrode sheet is equipped on the second sliding frame, the swing bar is contacted with the electrode sheet under the gravity and makes the electrically conductive shaft swing down;The yarn breakage detection module is further included in the feeding device, the yarn breakage detection module includes PLC controller and detection circuit, the high potential of the detection circuit is electrically connected with the electrically conductive shaft, the low potential of the detection circuit is electrically connected with the electrode sheet, the PLC controller is connected with the drive module control.
[0006] Each feeding module in the utility model can feed one yarn, the fed yarn is stacked under the corresponding feeding module, and the yarn flows backward under the guidance of the feeding can on the back side after penetrating the threading hole, so that more yarn flows on the feeding can farther back. The threading hole in the utility model is located on the first sliding frame, which can slide relative to the first support, so as to adjust the position. Meanwhile, the utility model adds a second support on each feeding module, and the pressure roller on the second support is located on the upper side of the yarn flowing through the feeding module. Since the yarn is in a tight state, the pressure roller is blocked by the yarn, so that the swing bar cannot be turned down. At this time, the detection circuit is disconnected. If any yarn breaks, the yarn will instantly lose tension, and the corresponding pressure roller will drive the swing bar to turn down, and finally make the electrically conductive shaft contact with the electrode sheet. At this time, the detection circuit is connected, and the PLC controller will pause the drive module. At this time, the utility model is in a paused state, which is convenient for workers to repair.
[0007] Further, the first support is also slidably provided with a third sliding frame along the length direction thereof, and two columns are vertically and spacedly arranged on the third sliding frame upwards, and the gap between the two columns is used for guiding the flowing yarn. The number of the third sliding frame and the position thereof are related, and the third sliding frame is not needed to be arranged on the feeding module at the front end, and the number of the third sliding frame on the feeding module at the rear is increased in turn. By arranging the third sliding frame and the two columns thereon, the yarn flowing through the utility model can be better guided, and the left and right deviation of the yarn on the feeding can is avoided.
[0008] Therefore, compared with the prior art, the utility model has the following characteristics: 1. The utility model is provided with a PLC controller and a detection circuit, the detection circuit is realized by a mechanical structure to realize on-off, when the yarn is normally introduced, the detection circuit is in the off state, once the yarn is broken, the corresponding detection circuit will be connected immediately, and the PLC controller will pause the driving module, so that the worker can be maintained, since the mechanical structure is used to realize the on-off of the circuit, therefore, it is not affected by the flying fluff and other impurities, as long as the lubricating oil is added to the movable place of the pressure roller and the swing rod regularly, the maintenance frequency can be greatly reduced. BRIEF DESCRIPTION OF DRAWINGS
[0009] BRIEF DESCRIPTION OF DRAWINGS Figure 1 It is a structural schematic view of the utility model;
[0010] BRIEF DESCRIPTION OF DRAWINGS Figure 2 It is the A part of the enlarged view of Figure 1 BRIEF DESCRIPTION OF DRAWINGS
[0011] BRIEF DESCRIPTION OF DRAWINGS Figure 3 It is the B part of the enlarged view of Figure 1 BRIEF DESCRIPTION OF DRAWINGS
[0012] BRIEF DESCRIPTION OF DRAWINGS Figure 4 It is the plan view of the feeding module. DETAILED DESCRIPTION
[0013] The technical scheme of the utility model will be further specifically described below by combining with the drawings.
[0014] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, and therefore cannot be understood as a limitation on the utility model.
[0015] Example 1: seeFigure 1 、 Figure 2 、 Figure 3 and Figure 4 A yarn feeding device of a yarn drawing frame of a blended yarn fabric, comprising a mounting frame 100 and four groups of feeding modules 200 arranged on the mounting frame, the feeding modules are arranged in a horizontal array on the mounting frame, the feeding module is composed of a feeding can 210, a first support 220 and a second support 230, the feeding can is horizontally rotatably arranged on the mounting frame, the mounting frame is provided with a driving module for driving all the feeding cans to rotate synchronously, the driving module is a conventional technology and will not be described here, the first support and the second support are fixedly arranged on the mounting frame and located at the front and rear sides of the feeding can, the highest point of the feeding can is higher than the two supports, a first sliding frame 240 is slidably arranged on the first support along the length direction of the first support, the first sliding frame is provided with a threading hole 241, a second sliding frame 250 is slidably arranged on the second support along the length direction of the second support, a swing rod 251 is rotatably connected to the second sliding frame, an electrically conductive shaft 252 is horizontally arranged on the swing rod, a pressure roller 253 is rotatably arranged on the electrically conductive shaft, and an electrode sheet 254 is arranged on the second sliding frame, the swing rod is made of insulating material and tends to swing downward under the action of gravity, and the electrically conductive shaft is in contact with the electrode sheet; the yarn feeding device further comprises a broken yarn detection module, the broken yarn detection module comprises a PLC controller and a detection circuit, the high potential of the detection circuit is electrically connected to the electrically conductive shaft, the low potential of the detection circuit is electrically connected to the electrode sheet, and the PLC controller is in control connection with the driving module.
[0016] Each feeding module in the embodiment can feed one yarn 300, the fed yarn is stacked in a roll below the corresponding feeding module, and the yarn flows backward under the guidance of the feeding can located at the rear side after penetrating through the threading hole, so that more yarns flow through the feeding cans at the rear. The threading hole in the embodiment is located on the first sliding frame, and the first sliding frame can slide relative to the first support to facilitate position adjustment. In addition, the second support is additionally arranged on each feeding module in the embodiment, the pressure roller on the second support is located on the upper side of the yarn flowing through the feeding module, and since the yarn is in a tight state, the pressure roller is blocked by the yarn, so that the swing rod cannot be flipped downward. At this time, the detection circuit is in an open state. If any yarn is broken, the yarn will instantly lose tension, the corresponding pressure roller will lose support and drive the swing rod to flip downward, and finally the electrically conductive shaft will be in contact with the electrode sheet. At this time, the detection circuit is connected, and the PLC controller will pause the driving module. At this time, the embodiment is in a paused state, which is convenient for workers to repair.
[0017] Further, see Figure 2 and Figure 4, the first support is further slidably provided with a third sliding frame 260 along the length direction thereof, and two vertical and spaced apart cylinders 261 are arranged on the third sliding frame upward, and the gap between the two cylinders is used for guiding and restricting the flowing yarn. The number of the third sliding frame and the position thereof are related, the third sliding frame is not needed to be arranged on the feeding module at the most front end, and the number of the third sliding frame arranged on the feeding module at the rear is increased in sequence. By arranging the third sliding frame and the two cylinders thereon, the yarn flowing on the embodiment can be better guided, and the left and right deviation of the yarn on the feeding barrel can be avoided.
[0018] See Figure 2 and Figure 3 The bottom of the first sliding frame, the second sliding frame and the third sliding frame is provided with a stud 10, a loose nut 11 and a sliding block 12, the sliding block is fixed to the bottom of the stud, the loose nut is screwed on the stud, the first support is provided with a first sliding groove 221 and a second sliding groove 222 for slidably accommodating the corresponding stud and sliding block, and the second support is provided with a third sliding groove 231 for slidably accommodating the corresponding stud and sliding block. When the loose nut is loosened, the corresponding sliding frame can slide, and after the position is adjusted, the loose nut is tightened again, so that the sliding frame is completely fixed.
[0019] It is obvious to those skilled in the art that the utility model can be changed in many ways, and such changes are not considered to be out of the scope of the utility model. All such modifications obvious to those skilled in the art will be included in the scope of the present claims.
Claims
1. A feeding device for a yarn drawing frame for blended yarn fabrics, comprising a mounting frame and a plurality of feeding modules disposed thereon, wherein the feeding modules are arranged in a horizontal array on the mounting frame, characterized in that: The feeding module consists of a feeding sliver, a first bracket, and a second bracket. The feeding sliver is horizontally rotatably mounted on the mounting frame. The mounting frame is equipped with a drive module that drives all the feeding slivers to rotate synchronously. The first bracket and the second bracket are fixedly mounted on the mounting frame and located on the front and rear sides of the feeding sliver. The highest point of the feeding sliver is higher than the two brackets. A first sliding frame is slidably mounted on the first bracket along its length and has a threading hole. A second sliding frame is slidably mounted on the second bracket along its length. A swing arm is horizontally rotatably connected to the second sliding frame. A conductive shaft is horizontally mounted on the swing arm, and a pressure roller is rotatably mounted on the conductive shaft. An electrode plate is mounted on the second sliding frame. The swing arm tends to swing downwards under gravity, causing the conductive shaft to contact the electrode plate. The feeding device also includes a yarn breakage detection module, which includes a PLC controller and a detection circuit. The high potential of the detection circuit is electrically connected to the conductive shaft, and the low potential of the detection circuit is electrically connected to the electrode plate. The PLC controller is controlled and connected to the drive module.
2. The feeding device for the yarn drawing frame of the blended yarn fabric according to claim 1, characterized in that: A third sliding frame is slidably mounted on the first support along its length. Two cylinders are vertically spaced upward on the third sliding frame, and the gap between the two cylinders is used to guide and constrain the flow of yarn.
3. The feeding device for the yarn drawing frame of the blended yarn fabric according to claim 2, characterized in that: The bottom of the first sliding frame, the second sliding frame, and the third sliding frame are all provided with studs, nut and slider. The slider is fixed to the bottom of the stud and the nut is screwed onto the stud. The first bracket is provided with a first groove and a second groove for slidingly accommodating the corresponding stud and slider. The second bracket is provided with a third groove for slidingly accommodating the corresponding stud and slider.