Scraper, scraper device, wire device and yarn throwing robot

Abstract

The application relates to a scraper, a scraper device, a scraping line device and a yarn feeding robot. The scraper is used for scraping a surface of a tube yarn, and the scraper has a blade with a first blade surface capable of facing the tube yarn during the scraping process. The first blade surface has a first blade line and a second blade line symmetrically arranged, and the first blade line and the second blade line are connected at a tip of the blade. During the scraping process of the tube yarn, the tip of the blade first contacts the surface of the tube yarn, and then can quickly insert into the outermost yarn of the tube yarn. Secondly, because the first blade line and the second blade line are symmetrically arranged on the first blade surface facing the tube yarn, during the further scraping process, the outermost yarn can be broken by one of the first blade line and the second blade line. Therefore, no matter which winding mode of the tube yarn is used, the thread end can be found due to the symmetric first blade line and the second blade line on both sides, and the universality of the scraper is realized.

Description

Technical Field

[0001] This application relates to the field of textile machinery technology, and in particular to a doctor blade, doctor blade device, yarn scraping device and yarn feeding robot. Background Technology

[0002] Yarn feeding robots are essential equipment in winding workshops, and finding yarn ends is an indispensable task for them. Finding yarn ends typically requires a scraper device to locate and cut the yarn ends on the surface of the yarn tube. However, different types of yarn tubes have different winding methods, which means that the scraper device needs to be adjusted or replaced accordingly when producing different types of yarn tubes, resulting in poor versatility of the scraper device. Summary of the Invention

[0003] Therefore, it is necessary to provide a doctor blade, doctor blade device, yarn feeding device, and yarn feeding robot that can improve the versatility of doctor blade devices and solve the problem of poor versatility of existing doctor blade devices.

[0004] In one aspect of this application, a scraper is provided for scraping the surface of a bobbin. The scraper has a blade with a first blade surface that faces the bobbin during the scraping process. The first blade surface has a first blade line and a second blade line that are symmetrically arranged, and the first blade line and the second blade line are connected at the tip of the blade.

[0005] In the process of scraping yarn from a bobbin, the aforementioned scraper first contacts the surface of the bobbin with the tip of its blade, allowing it to quickly penetrate into the outermost layer of yarn. Furthermore, because the first blade facing the bobbin has symmetrically arranged first and second blade lines, the outermost yarn can be broken by either the first or second blade line during further scraping. Therefore, regardless of the bobbin winding method, the symmetrical first and second blade lines on both sides ensure that the yarn end can be found, achieving the scraper's versatility.

[0006] In one embodiment, both the first and second cutting edge lines are curved.

[0007] In one embodiment, the first cutting edge line and the second cutting edge line are connected to form a parabola.

[0008] In one embodiment, the blade also has a second blade surface opposite to the first blade surface, and the edge of the second blade surface is directly connected to the first blade line and the second blade line.

[0009] In one embodiment, the cross-sectional shape of the second cutting edge along the first plane is an arc, wherein the first plane is parallel to or coincides with the axis of symmetry of the first cutting edge and is perpendicular to the first cutting edge.

[0010] In one embodiment, the first cutting edge is inclined away from the axis of the yarn tube.

[0011] In one embodiment, the first cutting edge is tilted at an angle of 4 to 6 degrees relative to the axis of the yarn tube.

[0012] In another aspect of this application, a doctor blade device is provided, including a doctor blade and a doctor blade drive member according to any of the above embodiments. The doctor blade drive member is connected to the doctor blade transmission and is used to drive the doctor blade to scrape the yarn surface of the tube.

[0013] In the process of scraping yarn from a bobbin, the aforementioned scraper device first contacts the surface of the bobbin with the tip of the blade, and then can quickly insert into the outermost layer of yarn. Secondly, since the first blade face facing the bobbin has symmetrically arranged first and second blade lines, the outermost layer of yarn can be cut by one of the first and second blade lines during the further scraping process. Therefore, regardless of the bobbin winding method, the symmetrical first and second blade lines on both sides can find the yarn end, realizing the versatility of the scraper.

[0014] In one embodiment, the scraper device further includes a drive unit mounting base and a scraper mounting base. The scraper drive unit is mounted on the drive unit mounting base, and the scraper is mounted on the scraper mounting base. The scraper drive unit is throttlely connected to the scraper mounting base and is used to drive the scraper mounting base to move in a single direction.

[0015] The drive unit mounting base and the scraper mounting base each have a guide portion and a mating portion, which cooperate to guide the scraper mounting base to move in at least two different directions under the driving action of the scraper drive unit.

[0016] In another aspect, this application also provides a scraping device, including a rotating device and a scraper device of any of the above embodiments;

[0017] The rotating device is located on one side of the doctor blade device and is used to rotate the yarn tube.

[0018] In the process of scraping the yarn tube, the aforementioned scraping device first contacts the surface of the yarn tube with the tip of the blade, and then can quickly insert into the outermost layer of yarn. Secondly, since the first blade face facing the yarn tube has symmetrically arranged first and second blade lines, the outermost layer of yarn can be broken by one of the first and second blade lines during the further scraping process. Therefore, regardless of the yarn tube winding method, the symmetrical first and second blade lines on both sides can find the yarn end, realizing the versatility of the scraper.

[0019] Another aspect of this application provides a yarn-feeding robot, which includes the aforementioned yarn-scraping device.

[0020] In the process of scraping yarn from a bobbin, the aforementioned yarn-feeding robot first contacts the surface of the bobbin with the tip of its blade, allowing it to quickly insert into the outermost layer of yarn. Secondly, since the first blade facing the bobbin has symmetrically arranged first and second blade lines, the outermost layer of yarn can be broken by either the first or second blade line during further scraping. Therefore, regardless of the bobbin winding method, the symmetrical first and second blade lines on both sides can locate the yarn end, achieving the versatility of the scraper. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the scraper in one embodiment of this application;

[0022] Figure 2 for Figure 1 A side view of the scraper shown;

[0023] Figure 3 This is a three-dimensional structural diagram of the scraper device in one embodiment of this application;

[0024] Figure 4 for Figure 3 A schematic diagram of the guide section in the scraper device shown;

[0025] Figure 5 for Figure 3 A schematic diagram of part of the structure in the scraper device shown.

[0026] Figure label:

[0027] Scraper 100;

[0028] Blade 10;

[0029] First cutting edge 11, second cutting edge 12, first cutting edge line 111, second cutting edge line 112;

[0030] Handle portion 20;

[0031] Scraper device 200;

[0032] Scraper drive component 210;

[0033] Scraper mounting bracket 220;

[0034] Mating part 221, mating protrusion 2211, slider 222;

[0035] Elastic element 230;

[0036] Drive component mounting base 240, guide part 241, guide groove 2411, base plate 242, second side plate 244, support rod 245, slide rail 246, sub-slide rail 2461. Detailed Implementation

[0037] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0044] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0045] Figure 1 A three-dimensional structural schematic diagram of a scraper according to one embodiment of this application is shown. For ease of description, the accompanying drawings only show structures related to the embodiments of this application.

[0046] Referring to the accompanying drawings, one embodiment of this application provides a doctor blade 100 for scraping the surface of yarn bobbins. The doctor blade 100 of this application is applied to a doctor blade device 200, specifically to a yarn feeding robot. In other embodiments, it can also be applied to other devices suitable for the doctor blade 100, and this is not limited thereto.

[0047] The scraper 10 has a blade 10, which has a first blade surface 11 that can face the yarn tube during the scraping process. The first blade surface 11 has a first blade line 111 and a second blade line 112 that are symmetrically arranged. The first blade line 111 and the second blade line 112 are connected at the tip of the blade.

[0048] It should be noted that the blade 10 refers to the direct part of the scraper 100 that can scrape the yarn tube. The tip of the blade 10 can be formed by the intersection of at least two blade surfaces. During the scraping process, the tip of the blade 10 can first contact the surface of the yarn tube and insert into the outermost yarn of the yarn tube.

[0049] In the process of scraping yarn from a bobbin, the blade 100 of this application first contacts the surface of the bobbin with the tip of the blade 10, and then can quickly insert into the outermost layer of yarn. Secondly, since the first blade surface 11 facing the bobbin has symmetrically arranged first blade line 111 and second blade line 112, the outermost layer of yarn can be cut by one of the first blade line 111 and the second blade line 112 during the further scraping process. Therefore, regardless of the bobbin winding method, the symmetrical first blade line 111 and second blade line 112 on both sides can find the yarn end, thus realizing the versatility of the blade 100.

[0050] Specifically, when the yarn winding direction is different, one clockwise and one counterclockwise, the scraper 100 of this application has symmetrical first blade line 111 and second blade line 112, so regardless of the winding direction, the corresponding first blade line 111 or second blade line 112 can be used to scrape the yarn.

[0051] In the embodiments of this application, the first cutting edge 11 is a whole plane. In other embodiments, the first cutting edge 11 may also be formed by splicing together multiple planes facing the yarn tube.

[0052] When the first cutting edge 11 is formed by splicing together multiple planes facing the yarn tube, the first cutting edge line 111 and the second cutting edge line 112 can be the outer contour line on the first cutting edge 11.

[0053] In some embodiments, both the first cutting edge line 111 and the second cutting edge line 112 are curved lines. The curved lines prevent the doctor blade 100 from damaging the yarn during the yarn-scraping process, thus improving the yarn-scraping quality. In other embodiments, the first cutting edge line 111 and the second cutting edge line 112 may also be straight lines or other curves, etc., and are not specifically limited.

[0054] Preferably, the first cutting edge line 111 and the second cutting edge line 112 are connected to form a parabola.

[0055] Research has shown that when the first cutting edge line 111 and the second cutting edge line 112 are connected to form a parabola, on the one hand, the vertex of the parabola is at the tip of the cutting edge 10, which is the point where the parabola is most sharply curved, which is conducive to the doctor blade 100 inserting into the outermost layer of yarn in the tube. On the other hand, the parabola can better fit with the yarn in the tube, which is conducive to the picking operation.

[0056] like Figure 2 As shown, in order to make it easier for the tip of the blade 10 to be inserted into the outermost layer of yarn in the bobbin, in the embodiments of this application, the first blade surface 11 is inclined away from the axis of the bobbin.

[0057] To clearly indicate the axis of the yarn tube, this application includes... Figure 1 The axis of the bobbin is schematically shifted to intersect with the tip of the blade 10 to obtain the reference axis OO. The first blade surface 11 is inclined away from the reference axis OO in a direction away from the bobbin.

[0058] Preferably, the inclination angle of the first blade surface 11 relative to the axis of the bobbin is 4 to 6 degrees. When the inclination angle of the first blade surface 11 relative to the axis of the bobbin is 4 to 6 degrees, the tip of the blade 10 can more easily insert into the outermost layer of the bobbin while avoiding damage to the yarn due to excessive inclination angle.

[0059] More preferably, the first cutting edge 11 is inclined at an angle of 5 degrees relative to the axis of the yarn tube.

[0060] In some embodiments, the blade 10 further has a second blade surface 12 opposite to the first blade surface 11, and the first blade surface 11 and the second blade surface 12 are connected at one end to form the tip of the blade 10.

[0061] The method of connecting the first cutting edge 11 and the second cutting edge 12 to form the tip of the cutting edge 10 is simple.

[0062] Furthermore, the edge of the second cutting edge 12 transitions directly to connect with the first cutting edge line 111 and the second cutting edge line 112 of the first cutting edge 11. Since the second cutting edge 12 transitions directly to connect with the first cutting edge line 111 and the second cutting edge line 112, it is possible to avoid the formation of a cutting edge on the side of the first cutting edge 11, thereby affecting the scraping effect of the first cutting edge line 111 and the second cutting edge line 112.

[0063] In the embodiments of this application, the second cutting edge 12 is a curved surface. The curved surface configuration allows for a smoother connection between the second cutting edge 12 and the first cutting edge 11. Furthermore, after the tip of the cutting edge 10 is inserted into the outermost layer of yarn in the bobbin, the second cutting edge 12 directly contacts the outermost layer of yarn. Therefore, the curved surface configuration allows the outermost layer of yarn to move smoothly on it, reducing the resistance to yarn scraping.

[0064] Optionally, the cross-sectional shape of the second cutting edge 12 along the first plane AA is an arc, wherein the first plane AA is parallel to or coincides with the axis of symmetry of the first cutting edge 11, and is perpendicular to the first cutting edge 11. The arc shape further reduces the scraping resistance.

[0065] In some embodiments, the scraper 100 further includes a handle portion 20, one end of which is connected to the blade 10. Specifically, the handle portion 20 extends in a straight line in a direction away from the blade 10.

[0066] like Figures 3-5 As shown, based on the same inventive concept, this application also provides a doctor blade device 200, including the doctor blade 100 and doctor blade drive 210 in any of the above embodiments. The doctor blade drive 210 is connected to the doctor blade 100 for driving the doctor blade 100 to scrape the yarn surface.

[0067] The scraper drive component 210 can be a hydraulic drive component or a pneumatic drive component, etc., and the specific type is not limited.

[0068] Furthermore, the doctor blade device 200 also includes a doctor blade mounting base 220, on which the doctor blade 100 is mounted. The doctor blade drive 210 is connected to the doctor blade mounting base 220 for transmission, so as to indirectly drive the doctor blade 100 to scrape the yarn surface.

[0069] Specifically, the end of the handle portion 20 away from the blade 10 is connected to the scraper mounting base 220.

[0070] Furthermore, the doctor blade device 200 also includes an elastic element 230, which is pre-pressed between the doctor blade 100 and the doctor blade mounting base 220. The elastic element 230 provides a force to maintain contact between the tip of the doctor blade 10 and the surface of the yarn after the tip of the doctor blade 10 contacts the surface of the yarn. By providing the elastic element 230, the doctor blade 100 can adapt to different yarn diameters, achieving a tight fit with the surface of yarn of any size, thereby ensuring that the doctor blade 100 can find and break the yarn ends.

[0071] Preferably, the elastic element 230 is sleeved on the outer side of the handle portion 20. Specifically, the elastic element 230 includes a compression spring.

[0072] In some embodiments, the scraper device 200 further includes a drive member mounting base 240, a scraper drive member 210 is mounted on the drive member mounting base 240, and the scraper drive member 210 is throttle-connected to the scraper mounting base 220 for driving the scraper mounting base 220 to move in a single direction.

[0073] The drive unit mounting base 240 and the scraper mounting base 220 each have a guide portion 241 and a mating portion 221. The guide portion 241 and the mating portion 221 cooperate to guide the scraper mounting base 220 to move in at least two different directions under the action of the scraper drive unit 210.

[0074] It should be noted that the movement along at least two different directions may include only the movement in the first direction and the movement in the second direction intersecting with the first direction, or the entire movement trajectory of the scraper mounting base 220 may be an arc or other curve, which includes the movement in at least two different directions, and the specific direction is not limited.

[0075] In the embodiments of this application, the guide portion 241 cooperates with the mating portion 221 to guide the scraper mounting base 220 to move along a first direction and a second direction intersecting the first direction under the driving action of the scraper drive member 210. Preferably, the first direction is perpendicular to the second direction.

[0076] By providing guide portion 241 and mating portion 221 on drive component mounting base 240 and scraper mounting base 220 to guide scraper mounting base 220 to move, the scraper drive component 210 can drive the scraper mounting base 220 to move in a single direction, which can be transformed into movement in at least two different directions. This avoids the use of multiple scraper drive components 210, which would lead to a complex drive mechanism. Moreover, the movement in at least two different directions is controlled by the same scraper drive component 210, resulting in good continuity between the two directions of movement.

[0077] Please continue reading. Figure 1 Specifically, in the embodiments of this application, the drive component mounting base 240 includes a base plate 242, a first side plate 243, a second side plate 244, and a support rod 245. The first side plate 243 and the second side plate 244 are disposed opposite each other on the same side of the base plate 242. The support rod 245 is disposed on the side of the first side plate 243 and the second side plate 244 away from the base plate 242, and both ends of the support rod 245 are respectively connected to the first side plate 243 and the second side plate 244. The scraper drive component 210 is fixed on the support rod 245, and the guide portion 241 or the mating portion 221 of the drive component mounting base 240 is disposed on the first side plate 243 or the second side plate 244.

[0078] In some embodiments, the scraper drive 210 is movably connected to the drive mount 240. Since the scraper drive 210 is connected to the scraper mount 220, and the scraper mount 220 moves in at least two different directions under the cooperation of the guide portion 241 and the mating portion 221, it will drive the scraper drive 210 to move together. Therefore, by enabling the scraper drive 210 to move relative to the drive mount 240, damage to the scraper drive 210 due to resistance to movement can be avoided. Furthermore, this direct movable connection to the drive mount 240 simplifies the overall structure.

[0079] In a specific embodiment of this application, the scraper drive 210 is rotatably connected to the drive mounting base 240. The rotation method is simple and occupies little space. Specifically, the scraper drive 210 is rotatably connected to the support rod 245.

[0080] In other embodiments, the scraper drive 210 may also be fixed on the drive mounting base 240 and connected to the scraper mounting base 220 through an intermediate movable member, which is movably connected to the scraper drive 210.

[0081] Please continue reading. Figures 1-3 In the embodiments of this application, the drive component mounting base 240 has a guide portion 241, and the scraper mounting base 220 has a mating portion 221.

[0082] In some embodiments, the guide portion 241 has a guide groove 2411, and the mating portion 221 has a mating protrusion 2211, which mates with the guide groove 2411.

[0083] By setting the guide groove 2411 to cooperate with the protrusion 2211, the guiding method is simple and the structure is stable.

[0084] Optionally, the protrusion 2211 has a cylindrical outer surface that mates with the groove wall of the guide groove 2411.

[0085] Setting the outer surface of the cylinder allows the mating protrusion 2211 to move smoothly within the guide groove 2411, and it is less prone to wear, thus improving its service life.

[0086] In other embodiments, the protrusion 2211 may also have a spherical outer surface, etc., and the specific implementation is not limited.

[0087] In some embodiments, the guide section 241 has a process section and a return section, which are connected end to end in a loop.

[0088] Thus, the guide section 241 not only guides the scraper mounting base 220 from its initial position to the scraping position, but also allows it to return to its initial position after scraping the yarn, thus meeting the requirements for the next scraping operation. Therefore, the overall scraping operation is smooth and fast.

[0089] Specifically, the process segment includes a first process segment and a second process segment, and the return segment includes a first return segment and a second return segment. The first process segment and the first return segment are set opposite to each other, and the second process segment and the second return segment are set opposite to each other. The direction of movement of the guide scraper mounting base 220 of the first process segment and the first return segment is different from the direction of movement of the guide scraper mounting base 220 of the second process segment and the second return segment.

[0090] Thus, the first process segment and the first return segment can satisfy movement in two opposite directions, while the second process segment and the second return segment can satisfy movement in another two opposite directions.

[0091] Specifically, when the mating part 221 is mated with the first process section, the doctor blade mounting base 220 can move from its initial position toward the yarn bobbin under the guidance of the first process section until it reaches the yarn scraping position close to the yarn bobbin surface. When the mating part 221 is mated with the second process section, the doctor blade mounting base 220 can move along the yarn bobbin axis under the guidance of the second process section, thereby scraping the yarn on the yarn bobbin surface at the yarn scraping position to find the thread end. When the mating part 221 is mated with the first return section, the doctor blade mounting base 220 can move away from the yarn bobbin and away from the yarn scraping position under the guidance of the first return section. When the mating part 221 is mated with the second return section, the doctor blade mounting base 220 can return to its initial position under the guidance of the second return section.

[0092] Please continue reading. Figure 2 More specifically, the guide groove 2411 includes a first guide groove 2411a, a second guide groove 2411b, a third guide groove 2411c, and a fourth guide groove 2411d. The first guide groove 2411a corresponds to the first return section, the second guide groove 2411b corresponds to the second return section, the third guide groove 2411c corresponds to the third return section, and the fourth guide groove 2411d corresponds to the fourth return section.

[0093] It should also be noted that the position of the protrusion 2211 entering the process segment can be selected in the middle of the first process segment or at the end of the first process segment, without any restriction.

[0094] In order to achieve stable guidance, in some embodiments, the scraper device 200 includes at least two guide portions 241 and at least two mating portions 221, wherein at least two guide portions 241 are arranged opposite to or away from each other, and each guide portion 241 is mated with a corresponding mating portion 221.

[0095] By setting at least two guide parts 241 that are opposite or back to each other and cooperating with the corresponding mating parts 221, the guide scraper mounting base 220 can be guided with balanced force on both sides during its movement, thus avoiding deviation during the guiding process and affecting the quality of hanging the wire.

[0096] Please continue reading. Figures 1-3 Specifically, in the embodiments of this application, at least one guide portion 241 is provided on the first side plate 243, and at least another guide portion 241 is provided on the second side plate 244. The scraper mounting base 220 has at least one mating portion 221 on each of its opposite sides. The portion of the scraper mounting base 220 with the mating portion 221 extends between the first side plate 243 and the second side plate 244, so that each guide portion 241 mates with a corresponding mating portion 221.

[0097] In some embodiments, one of the drive mount 240 and the scraper mount 220 further includes a slide rail 246, and the other includes a slider 222. The slide rail 246 cooperates with the slider 222 to guide the scraper mount 220 to move relative to the drive mount 240.

[0098] With the cooperation of the slide rail 246 and the slider 222, the scraper mounting base 220 has better stability in movement relative to the drive component mounting base 240.

[0099] Specifically, in the embodiments of this application, the drive component mounting base 240 has a slide rail 246, and the scraper mounting base 220 has a slider 222.

[0100] More specifically, the slide rail 246 includes two opposing sub-slide rails 2461, with a groove formed between the two opposing sub-slide rails 2461, into which the slider 222 extends and engages. The two sub-slide rails 2461 can be respectively mounted on the first side plate 243 and the second side plate 244, and the slider 222 is connected to the scraper mounting base 220.

[0101] Based on the same inventive concept, this application also provides a yarn scraping device for scraping yarn from a bobbin. The yarn scraping device includes a rotating device and the aforementioned scraper device 200. The rotating device is used to rotate the bobbin.

[0102] Based on the same inventive concept, this application also provides a yarn feeding robot, including the above-mentioned yarn scraping device.

[0103] The doctor blade 100, doctor blade device 200, yarn-scraping device, and yarn-feeding robot provided in this application embodiment have the following beneficial effects:

[0104] During the scraping process of the bobbin, the tip of the blade 10 first contacts the surface of the bobbin, and then can quickly insert into the outermost layer of the bobbin yarn. Secondly, since the first blade surface 11 facing the bobbin has symmetrically arranged first blade line 111 and second blade line 112, during the further scraping process, the outermost layer of yarn can be cut by one of the first blade line 111 and the second blade line 112. Therefore, regardless of the bobbin winding method, since there are symmetrical first blade lines 111 and second blade lines 112 on both sides, the yarn end can be found, realizing the versatility of the scraper 100.

[0105] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0106] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A doctor blade for scraping threads off the surface of yarn tubes, characterized in that, The scraper has a blade with a first blade surface that faces the yarn tube during the scraping process. The first blade surface has a first blade line and a second blade line symmetrically arranged, and the first blade line and the second blade line are connected at the tip of the blade. Both the first blade line and the second blade line are arcs. The connection between the first blade line and the second blade line forms a parabola. The blade also has a second blade surface opposite to the first blade surface, and the edge of the second blade surface is directly connected to the first blade line and the second blade line. The cross-sectional shape of the second blade surface along a first plane is an arc, wherein the first plane is parallel to or coincides with the axis of symmetry of the first blade surface and is perpendicular to the first blade surface. The tip of the blade can contact the surface of the bobbin to insert into the yarn of the bobbin, and one of the first blade line and the second blade line can cut and scrape the yarn of the bobbin during the rotation of the bobbin.

2. The scraper according to claim 1, characterized in that, The first cutting edge is inclined away from the axis of the yarn tube.

3. The scraper according to claim 2, characterized in that, The first cutting edge is inclined at an angle of 4 to 6 degrees relative to the axis of the yarn tube.

4. A scraper device, characterized in that, Includes the doctor blade and doctor blade drive as described in any one of claims 1 to 3, wherein the doctor blade drive is connected to the doctor blade drive and is used to drive the doctor blade to scrape the yarn surface of the bobbin.

5. The scraper device according to claim 4, characterized in that, The scraper device further includes a drive component mounting base and a scraper mounting base. The scraper drive component is mounted on the drive component mounting base, and the scraper is mounted on the scraper mounting base. The scraper drive component is throttlely connected to the scraper mounting base and is used to drive the scraper mounting base to move in a single direction. The drive unit mounting base and the scraper mounting base each have a guide portion and a mating portion, respectively. The guide portion and the mating portion cooperate to guide the scraper mounting base to move in at least two different directions under the driving action of the scraper drive unit.

6. A wire scraping device, characterized in that, Includes a rotating device and a scraper device as described in claim 4 or 5; The rotating device is located on one side of the doctor blade device and is used to rotate the bobbin.

7. A yarn-feeding robot, characterized in that, Includes the wire scraping device as described in claim 6.

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