Residual yarn cutting device for paper bobbins

Abstract

The utility model provides a paper bobbin residual yarn cutting device which comprises a conveying guide rail and a cutting mechanism arranged on the upper side of the conveying guide rail, a bobbin pushing mechanism is arranged on the upper side, close to one end, of the conveying guide rail, and a bobbin collecting box is arranged on the lower side of the other end of the conveying guide rail. A waste yarn storage box is arranged on the lower side, located on the cutting mechanism, of the conveying guide rail. The cutting mechanism comprises a vertically-arranged positioning rod and a cutting edge obliquely fixed to the positioning rod, an arc-shaped plate is arranged at the bottom of the positioning rod, a cutting edge is arranged at the bottom of the cutting edge, and the lowest position of the cutting edge is higher than the center position of the bottom face of the arc-shaped plate. The residual yarn cutting device has the advantages that the positioning rod is matched with the inclined cutting edge, and the technical problem that paper bobbins are prone to being damaged by an existing residual yarn cutting device adopting mechanical cutting is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of textile, in particular to a residual yarn cutting device for a paper yarn tube. Background Art

[0002] In the textile industry, paper yarn tubes, as common winding tools, are widely used in the storage and transportation of various yarns. The residual yarns (referred to as "residual yarns") on the yarn tubes are mainly due to the fact that during the use of the yarns, due to factors such as mechanical tension and friction, some yarns may adhere to the surface or inside of the yarn tubes, especially when the yarns are wound unevenly or the texture of the yarns themselves is relatively thin. In order to ensure the smoothness and efficiency of the yarns during use, it is usually necessary to cut the residual yarns after the yarns are used up.

[0003] The existing residual yarn cutting technologies mainly include two methods: mechanical cutting and hot melt cutting. Mechanical cutting is mainly achieved by a rotating blade or a fixed blade. This method is simple to operate and low in cost, and is suitable for most types of yarns. Hot melt cutting melts the yarns by using high temperature. This method can effectively prevent the ends of the yarns from spreading, and is especially suitable for dealing with easily spreading yarns such as synthetic fibers.

[0004] However, in practical applications, mechanical cutting has certain limitations. Especially when used for paper yarn tubes, due to the relatively soft and easily damaged material of the paper yarn tubes, the blade is prone to scratching or damaging the surface of the yarn tubes during the cutting process. Such damage will not only affect the appearance of the yarn tubes, but also may cause a decrease in the structural strength of the yarn tubes, thereby affecting the subsequent yarn winding and use effects. Content of the Utility Model

[0005] Aiming at the deficiencies in the prior art, the utility model provides a residual yarn cutting device for a paper yarn tube, which solves the technical problem that the existing residual yarn cutting device using mechanical cutting is prone to damage the paper yarn tube.

[0006] A residual yarn cutting device for a paper yarn tube according to an embodiment of the utility model includes a conveying guide rail and a cutting mechanism arranged on the upper side of the conveying guide rail. A yarn tube pushing mechanism is arranged on the upper side near one end of the conveying guide rail, a yarn tube collection box is arranged on the lower side at the other end of the conveying guide rail, and a waste yarn storage box is arranged on the lower side of the conveying guide rail at the position of the cutting mechanism.

[0007] The cutting mechanism includes a vertically arranged positioning rod and a cutting edge obliquely fixed on the positioning rod. An arc-shaped plate is arranged at the bottom of the positioning rod, the bottom of the cutting edge is a cutting edge, and the lowest position of the cutting edge is higher than the center position of the bottom surface of the arc-shaped plate.

[0008] The technical principle of the present utility model is as follows: After the paper yarn tubes are successively fed into the yarn tube pushing mechanism, the yarn tube pushing mechanism will push the paper yarn tubes forward in sequence, enabling the paper yarn tubes to contact the arc-shaped plate and thus be positioned. At this time, the cutting edge of the cutting blade, because it is higher than the center position of the bottom surface of the arc-shaped plate, cannot contact the paper yarn tube, avoiding scratching and damaging the paper yarn tube. And when the paper yarn tube is continuously pushed and the cutting edge cuts the residual yarn, since the paper yarn tube is in a state of being positioned by the arc-shaped plate, there will be no up-and-down vibration resulting in contact with the cutting edge.

[0009] It should be noted that the height difference between the cutting edge and the center position of the bottom surface of the arc-shaped plate needs to be selected according to the actual thickness of the yarn, and the range is from 0.02 mm to 0.1 mm.

[0010] Compared with the prior art, the present utility model has the following beneficial effects: By means of the positioning rod cooperating with the inclined cutting blade, it solves the technical problem that the existing residual yarn cutting device using mechanical cutting is prone to damaging the paper yarn tube.

[0011] Furthermore, the cutting edge is inclined, the lowest part of the cutting edge is on the side close to the arc-shaped plate, and the height difference between the lowest part and the highest part of the cutting edge ≥ 0.2 mm.

[0012] Furthermore, a front cutting surface is provided on the side of the bottom of the cutting blade away from the arc-shaped plate, and the front cutting surface is connected to the cutting edge.

[0013] Furthermore, an inclined rod is provided on the positioning rod, a T-shaped groove is provided on the inclined rod, the top of the cutting blade is clamped into the T-shaped groove, and a set screw is provided on the T-shaped groove, and the set screw presses against the cutting blade.

[0014] When adjusting the height difference between the cutting edge and the center position of the bottom surface of the arc-shaped plate, place a paper yarn tube under the arc-shaped plate, then loosen the set screw, place a standard copper sheet between the paper yarn tube and the cutting blade, such as a 0.02 mm copper sheet, let the cutting blade naturally rest on the standard copper sheet, and then lock the set screw and take out the copper sheet and the paper yarn tube.

[0015] Furthermore, a yarn dropping port is provided at the position where the conveying guide rail aligns with the waste yarn storage box, the yarn dropping port communicates with the waste yarn storage box, and two symmetrically arranged rollers are provided at the position where the yarn dropping port aligns with the arc-shaped plate.

[0016] Furthermore, an inclined surface is provided at one end of the yarn dropping port close to the yarn tube collection box.

[0017] Furthermore, an elastic rubber layer is provided on the roller.

[0018] Further, the yarn bobbin pushing mechanism includes a driving motor and two pushing wheels arranged above the conveying guide rail. The two pushing wheels are evenly distributed along the length direction of the conveying guide rail, and the two pushing wheels are in transmission connection with the driving motor.

[0019] Further, bearing seats are respectively arranged on both sides of the two pushing wheels for support. The two pushing wheels are respectively in transmission connection with driven gears, and the driving motor is in transmission connection with a driving gear, and the driving gear meshes with the two driven gears respectively. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the waste yarn cutting device according to an embodiment of the present invention.

[0021] Figure 2 It is a top view of the yarn bobbin pushing mechanism according to an embodiment of the present invention.

[0022] Figure 3 It is Figure 1 a partial enlarged view of part A of

[0023] Figure 4 It is a schematic structural diagram of the positioning rod according to an embodiment of the present invention.

[0024] Figure 5 It is a cross-sectional view of the yarn dropping opening according to an embodiment of the present invention.

[0025] Figure 6 It is a top view of the yarn dropping opening according to an embodiment of the present invention.

[0026] In the above-mentioned drawings: 100, conveying guide rail; 101, yarn bobbin collection box; 102, waste yarn storage box; 110, yarn dropping opening; 111, inclined surface; 120, roller; 200, cutting mechanism; 210, positioning rod; 211, arc plate; 220, cutting edge; 221, cutting edge; 230, inclined rod; 231, T-shaped groove; 232, set screw; 222, front tool face; 300, yarn bobbin pushing mechanism; 310, driving motor; 311, driving gear; 320, pushing wheel; 321, bearing seat; 322, driven gear. Detailed Embodiments

[0027] The technical solutions in the present invention will be further described below with reference to the drawings and embodiments.

[0028] As Figure 1The residual yarn cutting device for paper bobbins shown in the figure includes a conveying guide rail 100 and a cutting mechanism 200 arranged on the upper side of the conveying guide rail 100, wherein a bobbin pushing mechanism 300 is provided on the upper side near one end of the conveying guide rail 100, for actively pushing the paper bobbins to move along the conveying track, and a bobbin collecting box 101 is provided on the lower side of the other end of the conveying guide rail 100, for storing the paper bobbins after the residual yarn is cut, and a waste yarn storage box 102 is provided on the lower side of the conveying guide rail 100 at the cutting mechanism 200, for receiving and storing the residual yarn after being cut.

[0029] like Figure 1-2 As shown, the bobbin pushing mechanism 300 includes a driving motor 310 and two pushing wheels 320 arranged on the upper side of the conveying guide rail 100 , wherein the two pushing wheels 320 are evenly distributed along the length direction of the conveying guide rail 100 , and the two pushing wheels 320 are transmission-connected to the driving motor 310 .

[0030] Specifically, the two driving wheels 320 are supported by bearing seats 321 on both sides. In order to adapt to paper bobbins of different diameters, the bearing seats 321 here can be set to be height-adjustable. The two driving wheels 320 are respectively connected to passive gears 322, and the driving motor 310 is connected to the driving gear 311. The driving gear 311 is respectively engaged with the two passive gears 322, so that the driving motor 310 can drive the two driving wheels 320 to rotate in the same direction.

[0031] like Figure 1 、 3 As shown, the cutting mechanism 200 includes a vertically arranged positioning rod 210 and a cutting blade 220 obliquely fixed on the positioning rod 210. Of course, in order to adapt to paper bobbins of different diameters, the positioning rod 210 here also needs to be height-adjustable. An arc-shaped plate 211 is welded and fixed at the bottom of the positioning rod 210. The bottom of the cutting blade 220 is a cutting edge 221. The lowest position of the cutting edge 221 is higher than the center position of the bottom surface of the arc plate 211. The specific height difference is between 0.02-0.1 mm, which is adjusted according to the actual residual yarn diameter.

[0032] like Figure 3 As shown, the cutting edge 221 is tilted, the lowest point of the cutting edge 221 is close to the side of the arc plate 211, and the height difference between the lowest point and the highest point of the cutting edge 221 is ≥0.2mm, so that the residual yarn is gradually cut when being cut.

[0033] Specifically, a rake surface 222 is provided on the bottom side of the cutting blade 220 away from the curved plate 211. The rake surface 222 is connected to the cutting edge 221 to form the entire cutting edge portion of the cutting blade 220. The function of the rake surface 222 is that when there is a lot of residual yarn on the paper bobbin, the upper residual yarn is cut off by the rake surface 222 and the bottom residual yarn is cut off by the cutting edge 221.

[0034] like Figure 4As shown in the figure, an inclined rod 230 is welded and fixed on the positioning rod 210. A T-shaped groove 231 is formed on the inclined rod 230. The top of the cutting blade 220 is clamped into the T-shaped groove 231. A set screw 232 is provided on the T-shaped groove 231, and the set screw 232 presses against the cutting blade 220. When fixation is required, the set screw 232 is tightened to press the cutting blade 220; when adjustment is required, the set screw 232 is loosened so as not to press the cutting blade 220, enabling it to move along the T-shaped groove 231.

[0035] As Figure 1 , 5 -6 shows that at the position where the conveying guide rail 100 is aligned with the waste yarn storage box 102, there is a yarn dropping port 110. The yarn dropping port communicates with the waste yarn storage box 102. At the position where the yarn dropping port 110 is aligned with the arc-shaped plate 211, there are two symmetrically arranged rollers 120. The function of the rollers 120 is to support the paper yarn tube at the yarn dropping port 110 to prevent it from moving downward. At the same time, the friction between the rollers 120 is rolling friction, facilitating its passage under the lower side of the arc-shaped plate 211.

[0036] Specifically, an elastic rubber layer is provided on the roller 120 to ensure that the roller 120 can closely adhere to the paper yarn tube without damaging the paper yarn tube.

[0037] As Figure 1 , 6 As shown in the figure, at one end of the yarn dropping port 110 close to the yarn tube collection box 101, there is an inclined surface 111, so that after the residual yarn of the paper yarn tube is cut, it can be avoided that the residual yarn does not fall but follows it into the yarn tube collection box 101. After setting the inclined port, after the paper yarn tube separates from the roller 120, its end will incline downward, causing the surface residual yarn to fall and enter the yarn dropping port 110.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A residual yarn cutting device for a paper yarn tube, characterized in that: It includes a conveying guide rail and a cutting mechanism arranged on the upper side of the conveying guide rail, a bobbin pushing mechanism is provided on the upper side of one end of the conveying guide rail, a bobbin collecting box is provided on the lower side of the other end of the conveying guide rail, and a waste yarn storage box is provided on the lower side of the conveying guide rail located at the cutting mechanism; The cutting mechanism includes a vertically arranged positioning rod and a cutting blade obliquely fixed on the positioning rod. An arc-shaped plate is provided at the bottom of the positioning rod. The bottom of the cutting blade is a cutting edge. The lowest position of the cutting edge is higher than the center position of the bottom surface of the arc-shaped plate.

2. The residual yarn cutting device for a paper yarn tube according to claim 1, characterized in that: The cutting edge is arranged obliquely, the lowest point of the cutting edge is close to one side of the arc-shaped plate, and the height difference between the lowest point and the highest point of the cutting edge is ≥0.2 mm.

3. A waste yarn cutting device for a paper yarn tube according to claim 1 or 2, characterized in that: A rake surface is provided on the side of the bottom of the cutting blade away from the arc-shaped plate, and the rake surface is connected to the cutting edge.

4. The residual yarn cutting device for a paper yarn tube according to claim 1, characterized in that: The positioning rod is provided with an inclined rod, the inclined rod is provided with a T-shaped slot, the top of the cutting blade is stuck in the T-shaped slot, the T-shaped slot is provided with a set screw, and the set screw supports the cutting blade.

5. The residual yarn cutting device for a paper yarn tube according to claim 1, characterized in that: The conveying guide rail is aligned with the waste yarn storage box and is provided with a yarn drop opening, the yarn drop opening is connected to the waste yarn storage box, and the yarn drop opening is aligned with the arc plate and is provided with two symmetrically arranged rollers.

6. The residual yarn cutting device for a paper yarn tube according to claim 5, characterized in that: The doffing port is provided with an inclined surface at one end close to the bobbin collecting box.

7. The residual yarn cutting device for a paper yarn tube according to claim 5, characterized in that: An elastic rubber layer is provided on the roller.

8. The residual yarn cutting device for a paper yarn tube according to claim 1, characterized in that: The bobbin pushing mechanism includes a driving motor and two pushing wheels arranged on the upper side of the conveying guide rail. The two pushing wheels are evenly distributed along the length direction of the conveying guide rail and are transmission-connected to the driving motor.

9. The residual yarn cutting device for a paper yarn tube according to claim 1, characterized in that: Bearing seats are provided on both sides of the two driving wheels for support. The two driving wheels are respectively connected to passive gears in a transmission manner. The driving motor is connected to a driving gear in a transmission manner. The driving gears are respectively engaged with the two passive gears.

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