JP2018193250A - Auxiliary device for supporting bobbin replacement in winding device - Google Patents

Abstract

To improve inconvenience of maintenance and during operation caused by dispersing and distributing respective means for sucking, cutting and guiding a yarn.SOLUTION: An auxiliary device for supporting bobbin replacement in a winding device includes: rotatable sucking means; and guiding means 15 and cutting means 13 respectively arranged in the rotatable sucking means. The sucking means includes an opening end part for utilizing negative pressure for sucking a yarn end part. The guiding means includes a capturing element for cooperating with the opening end part for holding one section of a yarn. The cutting means includes a cutting element 17 for cutting the yarn. The capturing element 16, the opening end part 11.3 and the cutting element are arranged side by side. The opening end part is arranged between the capturing element and the cutting element.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to an auxiliary device for supporting bobbin replacement in a winding device of a textile machine.

Background Art In a winding device, an auxiliary device for supporting a bobbin exchange operation includes a suction means for sucking a yarn to hold the yarn, and a cutting for cutting the yarn so that a complete bobbin is independent. Must have means.

  It is known in the existing art that there are generally two types of auxiliary devices. The first is the so-called “back type”, in which the suction means and the cutting means are arranged on the rear side, in which case, for example, published by Chinese Patent No. 1099442 (CN1094462C) In accordance with the content disclosed by the patent, a friction roller is sandwiched between the rear side and the yarn inlet side. The other is the so-called “front type”, in which the suction means and the cutting means are the same as the yarn inlet side according to the content disclosed by the patent published by EP 0 659 654 (EP0659674B1) It is arranged on the front side. The disadvantage of the “rear side” compared to the “front side” is that the “rear” auxiliary device is less accessible for maintenance because the rear side is away from the operating space.

  According to the disclosed content of EP 0 659 654 (EP0659674B1), the implementation of the bobbin exchange operation requires the presence of suction means, guide means and cutting means, respectively, which are respectively arranged in front of the friction rollers. Has been. The cutting means is arranged in the vicinity of one clamping disk of the winding device. The suction means is disposed away from the friction roller. The rotatably arranged guide means has a rotating shaft arranged near the other clamping disk of the winding device. The guide means has a rod, one end of the rod is connected to the rotating shaft, and a thread guide is provided at the other end. During the rotation of the rotating shaft, the rod can move to rotate, so that the yarn is parallel to the position where the rod is perpendicular to the winding tube and the rod is parallel to the winding tube. Guide between locations.

  Since the suction means, the guide means and the cutting means are distributed in a distributed manner, separate maintenance is required. At the same time, complex distributed structures lead to time-consuming assembly and disassembly operations.

In view of the above-mentioned defects in the existing technology, the technical problem to be solved by the present invention is to provide an auxiliary device for supporting the bobbin replacement in the winding device, which can avoid the above-mentioned defects It is to be. This object is achieved by the following technical solution.

  In accordance with the first technical solution of the present invention, the auxiliary device for supporting the bobbin exchange in the winding device includes a rotatable suction means, a guide means and a cutting means respectively disposed on the rotatable suction means And the suction means has an open end utilizing negative pressure to suck the yarn end and the guide means cooperates with the open end to hold one section of the yarn The catching element has a cutting element for cutting the yarn, the catching element, the open end and the cutting element are arranged side by side with the catching element and the cutting element It is arranged between.

  The first technical solution is that the suction, cutting and guiding of the yarn takes place in a compact device, which is caused by a distributed distribution of means for suction, cutting and guiding, during maintenance and operation Avoid the inconvenience of. Since the open end of the suction tube is located between the cutting element and the capture element, the thread can be effectively sucked by the suction tube after being cut and held together by the suction tube and the capture element Guaranteed.

  In accordance with the second technical solution of the present invention, the open end of the suction means has a groove extending along the direction to the cutting element and the capture element, the groove passing through the cross section of the open end. It extends.

  The distance from the yarn to the open end determines the success rate at which the yarn end is sucked by the suction tube after the yarn is cut. Due to the arrangement of the grooves, the yarn can be in full contact with the groove, and therefore the success rate at which the yarn ends are sucked can be significantly increased.

  According to a third technical solution of the present invention, the suction means has a bent suction tube, the suction tube has a vertical section and a horizontal section with an open end, The vertical section is used as the rotation axis of the suction means.

  The suction tube uses its vertical section as the axis of rotation, whereby the cutting means and the guiding means rotate together. This eliminates the need for an additional rotating shaft and simplifies the structure of the auxiliary device.

  In accordance with the fourth technical solution of the present invention, the suction means is driven to rotate by a step motor.

  During the entire processing process, the auxiliary device needs to rotate through a full angle of about 180 degrees. Since the step motor has the advantage of rotating by an arbitrary angle, the auxiliary device driven by the step motor can flexibly rotate by a predetermined angle for performing effective processing on the yarn.

  In accordance with the fifth technical solution of the present invention, the guiding means and the cutting means are arranged in the suction tube in such a way that they are close to the open end.

  Thereby, the auxiliary device of the present invention has a relatively compact structure.

  In accordance with a sixth technical solution of the present invention, the cutting means further comprises a first thread lifting section associated with one side of the cutting element, and the capture element of the guiding means is a second thread lifting section. The first yarn lifting section and the second yarn lifting section protrude from the open end of the suction means.

  Due to the arrangement of the first thread lifting section, the thread can be lifted in the first thread lifting section before being cut by the cutting element, rather than being cut immediately, so that the thread can be Complete contact with the part and the capture element. The second thread lifting section allows the thread to be pushed up from its original height.

  In accordance with the seventh technical solution of the present invention, the first yarn lifting section of the cutting means is a yarn guide plate, the upper edge of the yarn guide plate near the outside being more than the upper edge of the cutting element near the outside. High, along the direction from the inside to the outside, the upper edge of the thread guide plate gradually descends, the upper edge of the thread guide plate close to the inside is lower than the upper edge of the cutting element close to the inside, Along the direction from the outside to the outside, the upper edge of the cutting element is gradually lowered.

  Depending on the height relationship between the first thread lifting section and the cutting element, the thread may move upward in the first thread lifting section before the thread contacts the cutting element to be cut. This can ensure complete contact between the thread and the open end.

  In accordance with the eighth technical solution of the present invention, the capture element of the guide means is arranged as a plate-shaped profile along a direction parallel to the horizontal section of the suction tube, the capture element The inwardly recessed portion of the plate-shaped profile that can be hung, and from the inside to the outside direction, the second thread lifting section is disposed outside the inwardly recessed portion, and descends This is a thread guide slope.

  The inwardly recessed portion and the second thread lifting section are integrally configured to obtain a relatively simple guide means.

  In accordance with the ninth technical solution of the present invention, the guiding means and the cutting means are fixed to the carrier at a predetermined distance relative to the open end of the suction means, and the carrier is connected to the suction means.

  By this arrangement, the guiding means and the cutting means are arranged in a removable form.

  In accordance with the tenth technical solution of the present invention, the cutting element has an upper cutter and a lower cutter arranged in a V-shaped arrangement.

  The intersecting arrangement of the upper and lower cutters forms a cutting angle that is significantly greater than 180 degrees, thereby increasing the success rate of cutting the yarn.

  In accordance with the eleventh technical solution of the present invention, the cutting element is in a side rear position with respect to the open end and the capture element is in a side front position with respect to the open end.

  As the auxiliary device rotates from the initial position to the boundary of the triangular area, the second thread lifting section of the capture element first contacts the thread, then the open end contacts the thread, and finally the thread. The cutting element contacts the thread to cut.

It is a top view of the present invention when an auxiliary device is positioned in an initial position. It is a partial front view of an auxiliary device. It is a side view of the cutting means of an auxiliary device. It is a side view of the guide means of an auxiliary device. It is a side view of the present invention when an auxiliary device is positioned in an initial position. It is a side view of this invention before a thread | yarn is cut | disconnected by a cutting means. FIG. 4 is a side view of the present invention when the yarn is held together by the open end and the capture element after the yarn has been cut by the cutting means. FIG. 4 is a partial schematic view of the clamping disk and auxiliary device of the present invention as the auxiliary device rotates the position of the clamping disk. FIG. 6 is a partial schematic view of the clamping disk and auxiliary device of the present invention as the auxiliary device rotates in the opposite direction away from the clamping disk.

DETAILED DESCRIPTION OF THE INVENTION In a textile machine, a winding device is used to regularly wind a yarn around a special shape, i.e. a cylindrical or conical bobbin. In order to ensure the continuity of the winding, the full bobbin is removed and then a new winding tube is loaded into the winding device and used to start a new winding cycle An automatic bobbin changer is now available. During the bobbin exchange process, an auxiliary device is needed to cut, suck and hold the yarn and to deliver the held yarn to a new take-up tube. The following is a detailed description of the auxiliary device of the present invention. It should be noted that “downstream” and “upstream” are described with respect to the direction of yarn travel and when describing guide means and cutting means, “inside” means that the guide means and cutting means are yarns The side that comes into contact with the yarn later when approaching is referred to as “outside”, and the “outside” means the side that comes into contact with the yarn earlier than “inside”. By thinking in this way, for example, the inwardly recessed portion is positioned inward with respect to the second thread lifting section, and the second thread lifting section is relative to the inwardly recessed portion. It is positioned outside. This is because when the guide means approaches the yarn, the second yarn lifting section first contacts the yarn.

  FIG. 1 schematically shows a plan view of the invention when the auxiliary device of the winding device is in the initial position. FIG. 3 is a side view of the present invention when the auxiliary device of the winding device is in the initial position. FIG. 6 is a partial schematic view of the clamping disk and auxiliary device when the auxiliary device is rotated relative to the position of the clamping disk. The following is a description of the structure of the present invention using the combination of FIG. 1, FIG. 3 and FIG. As shown in FIGS. 1 and 3, the winding device has a yarn inlet side 5, an auxiliary device 1, a reciprocating yarn guide device 4, a friction roller 3, and a cradle 2. The yarn inlet side 5 is the side on which the yarn 6 enters the winding device. One end of the cradle 2 is provided with a pair of clamping discs 2.1 that can clamp the winding tube 7, while the other end has a rotating shaft 2.2. The cradle 2 can rotate around the axis of rotation 2.2 so that the clamped winding tube 7 can move towards or away from the friction roller 3. The reciprocating yarn guide device 4 includes a yarn guide 4.1, a guide belt 4.2, and a drive motor 4.3 that drives the guide belt 4.2. By reversing the rotation direction of the drive motor 4.3, the guide belt 4.2 is driven to move while reversing the direction. The yarn guide 4.1 is arranged on the guide belt 4.2, so that the yarn guide 4.1 can be moved with its direction reversed and reciprocates along the axis of the winding tube 7. The friction roller 3 that is directly driven by a drive source (not shown) is in contact with the winding tube, and rotates the winding tube 7 by frictional force. The yarn guide 4.1 is positioned on the upstream side of the friction roller 3, and the auxiliary device 1 is positioned on the upstream side of the yarn guide 4.1. The yarn guide 4.1 and the auxiliary device 1 are each positioned on one side of the friction roller 3. During the normal winding process, the yarn 6 enters the yarn inlet side 5 and then passes through the yarn guide 4.1. The yarn guide 4.1 guides the yarn so as to reciprocate along the axial direction of the winding tube 7. The yarn then enters a contact point between the winding tube 7 and the friction roller 3 and is finally wound on a bobbin 10 on the winding tube 7.

  As can be seen from the partial schematic diagram of FIG. 6, a hook element 8 is provided on the periphery of the clamping disc 2.1. The hook element 8 hooks the yarn when the yarn is delivered to the clamping disk 2.1 before the winding of the yarn starts. The purpose of the hook element 8 is that the yarn is wound around the winding tube 7. Is to make it possible. A cutter 9 is provided on the rear side of the clamping disk 2.1. After the yarn is hooked by the hook element 8, the cutter 9 can cut the yarn sections held together by the hook element 8 and the open end 11.3 of the suction tube 11.

  As shown in FIG. 1, the auxiliary device 1 includes a suction unit 14, a guide unit 15, and a cutting unit 13.

  As further illustrated by FIG. 3, the suction means 14 is configured as a suction tube 11 bent into an L-shape comprising a vertical section 11.2 and a horizontal section 11.1. In order to realize the function of thread suction, one end of the vertical section 11.2 is connected to a negative pressure source (not shown) and one end of the horizontal section 11.1 It is the open end 11.3 for sucking. When the negative pressure source is connected to the suction tube 11, a suction effect is produced at the open end 11.3 of the suction tube. The yarn end after the yarn has been cut near the open end 11.3 is sucked by the open end 11.3 so that the yarn 6 has a predetermined yarn tension at the open end 11.3. Hold it. In order to realize the rotation of the suction means, the suction pipe 11 of the suction means 14 is connected to a driving device. Preferably, the drive device employs a step motor 12. The transmission can be configured by meshing the gear in the vertical section 11.2 of the suction pipe 11 with the gear in the output shaft of the step motor 12. The suction pipe 11 can be rotated around the vertical section 11.2 by driving the step motor 12 and meshing the gears.

  FIG. 2 is a front view of the auxiliary device 1. FIG. 2.2 is a side view of the guiding means 15 of the auxiliary device 1, and the outer shape of the guiding means 15 is shown in FIG. According to FIGS. 2, 2.2 and 3, the guide means 15 has a catching element 16 for guiding the thread 6. The capture element 16 can cooperate with the open end 11.3 of the suction tube 11 to hold the thread 6 sucked by the open end 11.3, whereby the held thread is As the device rotates, it is transferred to the clamping end 2.1 so that it can be easily hooked by the hook element 8. Preferably, the capture element 16 is arranged as a plate-shaped profile extending along a direction parallel to the horizontal section 11.1 of the suction tube 11. The plate profile has an inwardly recessed part 16.1. The thread 6 can travel laterally through the inwardly recessed portion 16.1, as illustrated by FIG. 2.2.

  FIG. 2.1 is a side view of the cutting means 13 of the auxiliary device 1. According to FIG. 2.1, the cutting means 13 has a cutting element 17 for cutting the yarn 6. Preferably, the cutting element is a cutter. The cutting edge of the cutter faces the thread, which also means that the facing direction of the cutting edge is generally the same as the opening direction of the open end 11.3. Preferably, the cutting element 17 has an upper cutter and a lower cutter arranged in a V shape. The intersecting arrangement of the cutting edges of the upper cutter 17.1 and the lower cutter 17.2 forms a cutting angle significantly greater than 180 degrees. Therefore, such an arrangement can increase the success rate of yarn cutting.

  The cutting element 17 and the capture element 16 are arranged side by side on the two sides of the open end 11.3 of the suction tube 11. The cutting element 17, the capture element 16 and the open end 11.3 are arranged as a compact structure. As shown by FIG. 2, the cutting element 17 is arranged on one side of the open end 11.3 at a relatively close distance. Similarly, the capture element 16 is arranged on the other side of the open end 11.3 at a relatively close distance. Here, “one side” and “the other side” mean the left side and the right side of the open end 11.3. The cutting means 13 and the guide means 15 are respectively arranged in the horizontal section 11.1 of the suction pipe 11 of the suction means 14, so that the cutting means 13 and the guide means 15 rotate with the rotation of the suction pipe 11. Can do. Preferably, the cutting means 13 and the guiding means 15 are arranged on a carrier 18 connected to the horizontal section 11.1 of the suction tube 11. Of course, the cutting means 13 and the guide means 15 can also have an integrated structure. The integrated structure can be connected to the suction tube 11 by welding means or usually by fastening bolts and nuts.

  According to FIGS. 2 and 2.1, the cutting means 13 further comprises a first yarn lifting section 19. The first yarn lifting section 19 is a yarn guide plate associated with one side of the cutting element 17. The positional relationship between the first yarn lifting section 19 and the lower cutter 17.2 of the cutting element 17 is as follows. The upper edge 19.1 of the yarn guide plate near the outside is higher than the upper edge 17.3 of the lower cutter 17.2 near the outside, and the upper edge of the yarn guide plate 19 along the direction from the inside to the outside. 19.1 is gradually falling. The upper edge 19.1 of the yarn guide plate 19 close to the inner side is lower than the upper edge 17.3 of the lower cutter 17.2 close to the inner side, and along the direction from the inner side to the outer side, the lower cutter 17.2. The upper edge 17.3 is gradually lowered. Therefore, when the cutting means 13 approaches the yarn 6, the upper edge 19.1 of the first yarn lifting section 19 first comes into contact with the yarn 6. The thread 6 then moves inward along the gradually rising upper edge 19.1. After moving a predetermined distance, the thread 6 comes into contact with the lower cutter 17.2 and is cut.

  2 and 3, the catching element 16 of the guiding means 15 has a second thread lifting section 16.2. The second thread lifting section 16.2 as part of the plate profile is a thread guiding slope arranged outside the inwardly recessed part 16.1. Along the direction from the inside to the outside, the yarn guide slope is gradually lowered. Thus, before the thread 6 falls into the inwardly recessed part 16.1, the thread 6 first moves up along the second thread lifting section 16.2.

  The facing direction of the open end portion 11.3 is defined as “front”, while the opposite direction to “front” is “rear”. As shown by FIG. 1, in order to achieve a better yarn suction and yarn cutting effect, the capture element 16, the cutting element 17 and the open end 11.3 have a specific positional relationship. That is, the cutting element 17 is in a lateral rear position with respect to the open end 11.3, and the capture element 16 is in a lateral forward position with respect to the open end 11.3. Based on this relationship, when the auxiliary device begins to rotate from its initial position to contact the thread 6, the second thread lifting end 16.2 of the catching element 16 first contacts the thread 6 and the cutting element 17 does not contact the thread 6. As the auxiliary device 1 further rotates until the thread 6 contacts the open end 11.3 and the inwardly recessed portion 16.1 of the capture element 16, the thread 6 contacts the cutting element 17 and is cut. When viewed in plan view, the angle formed between the horizontal section 11.1 of the suction tube 11 and the connecting line of the open end 11.3, the cutting element and the inwardly recessed part 16.1 is It is not 90 °.

  The following is a detailed description of the machining process of the auxiliary device 1 using the combination of FIGS. 1 and 3 to 7.

  1 and 3 are a plan view and a side view of the present invention when the auxiliary device 1 is in the initial position, respectively. After being processed upstream by the process device, the yarn 6 passes through the ascending and descending yarn guide 20 before entering the winding device. By the action of the cylinder 20.1, the ascending and descending yarn guide 20 can be ascending and descending between a low position and a high position. After passing through the ascending and descending yarn guide 20, the yarn 6 passes through the yarn guide 4.1 that reciprocates in the lateral direction, and then enters the contact gap between the friction roller 3 and the bobbin 10. The thread guide 4.1 maintains a reciprocating movement along the axial direction of the winding tube 7 during machining, so that the trajectory of the thread from the ascending and descending thread guide 20 to the thread guide 4.1 is shown in FIG. The triangular area 6.1 indicated by the hatched area is covered. In order to avoid interfering with normal yarn winding, the auxiliary device 1 is positioned outside the triangular area 6.1 when the operation of the auxiliary device 1 is not necessary. Preferably, the horizontal section 11.1 of the suction tube 11 is in such a position that the horizontal section 11.1 is generally perpendicular to the winding tube 7 and away from the bobbin 10. At the same time, during normal winding of the yarn 6, the rising and lowering yarn guide 20 is in a low position, as shown by FIG.

  When the bobbin 10 reaches a predetermined parameter value (ie bobbin diameter, winding duration), the bobbin 10 completes winding, which means that the bobbin 10 can be replaced with a new winding tube. To do. The cylinder for driving the ascending and descending thread guide 20 receives a signal for lifting the ascending and descending thread guide 20 to a higher position, as can be seen from FIG. The triangular area 6.1 at the higher position is higher than the triangular area at the lower position, so that the thread 6 is at the same height as the auxiliary device. A step motor 12 for driving the auxiliary device 1 receives a rotation signal. At the same time, the suction tube 11 is connected to a negative pressure source. Due to the rotational drive of the step motor 12, the vertical section 11.2 of the suction tube 11 rotates, and thus the horizontal section 11.1 rotates synchronously and approaches the triangular area 6.1. As the horizontal section 11.1 rotates to the boundary of the triangular area 6.1, the auxiliary device 1 starts to contact the thread 6. Due to the specific positional relationship between the catching element 16, the cutting element 17 and the open end 11.3, the thread 6 first comes into contact with the second thread lifting section 16.2 of the guiding means 15. With further rotation of the auxiliary device in the same direction, the thread 6 is lifted along the second thread lifting section 16.2 until it falls into the inwardly recessed part 16.1. As the auxiliary device 1 further rotates, the thread 6 then contacts the open end 11.3 of the suction tube 11, in which case the thread 6 is connected to the open end 11.3 and the inner end, as can be seen from FIG. In contact with both of the recesses 16.1. Subsequently, the thread 6 comes into contact with the first thread lifting section 19 of the cutting means 13. Further rotation of the auxiliary device 1 causes the thread 6 to be lifted along the first thread lifting section 19 until it is cut in contact with the cutting element 17. In this case, the yarn 6 is cut at two yarn ends. One yarn end is in the yarn on the bobbin 10 side, and the other yarn end is sucked and held by the open end 11.3 and the suction tube 11. As a result, one section of yarn is held by the open end 11.3 and the inwardly recessed portion 16.1, as shown by FIG.

  After the bobbin 10 completes winding, the cradle 2 subjected to the action of a cylinder (not shown) rotates about the rotation shaft 2.2, whereby the bobbin 10 is lifted and separated from the friction roller 3. . The complete bobbin 10 is removed from the clamping disc and a new winding tube 7 is mounted between the clamping discs 2.1. Next, the cradle 2 rotates in the opposite direction, whereby a new winding tube 7 comes into contact with the friction roller 3 and is rotated. Similarly, the clamping disk 2.1 rotates again with the winding tube 7.

  The auxiliary device 1 whose opening end 11.3 and inwardly recessed portion 16.2 collectively hold one section of the yarn continues to rotate along the original direction by driving the stepping motor 12 To do. When the section of yarn is positioned near the clamping disk 2.1, i.e. in the delivery position, the auxiliary device 1 receives a signal for stopping the rotation. As can be seen from FIG. 6, when the auxiliary device 1 is in the delivery position, the section of the retained yarn intersects the plane in which the clamping disk 2.1 is positioned. The hook element 8 arranged in a protruding manner around the clamping disk 2.1 rotates until it contacts the thread 16, whereby the thread 16 is hooked by the hook element 8. The yarn is then sent to the winding tube 7 for winding. Immediately after the thread 6 is hooked by the hook element 8, the open end 11.3 and the section of the thread held together by the hook element 8 collide with the cutter 9 arranged on the rear side of the clamping disk 2.1. Is cut off. The yarn end portion of the yarn in the winding tube 7 becomes the yarn end portion of the bobbin, and the other yarn end portion is sucked by the suction tube 11. At this moment, the yarn 6 is fed without interruption from the upper flow process device and is hooked on the inwardly recessed part 16.1 of the capture element 16 before being wound on the winding tube. The catching element 16 of the auxiliary device 1 remains stationary at the delivery position, so that the yarn 6 repeats winding at one place at the end of the winding tube, forming a so-called tail yarn 21.

  Subsequently, the auxiliary device 1 receives the signal command so as to rotate in the direction opposite to the original rotation direction. During rotation in the opposite direction, the thread 6 caught in the inwardly recessed part 16.1 of the catching element 16 is separated from the inwardly recessed part 16.1 and is at the same height as the thread guide 4.1. Depressed. The thread 6 is then captured by the thread guide 4.1 as shown in FIG.

  It should be noted that before the auxiliary device 1 rotates in the opposite direction, the cylinder for driving the raising and lowering yarn guide 20 receives a signal for driving the raising and lowering yarn guide 20 to a lower position. It is. This ensures that rotation of the auxiliary device 1 in the opposite direction does not interfere with normal yarn winding.

  Next, the auxiliary device 1 continues to rotate in the opposite direction until it reaches the initial position, and waits for the next bobbin replacement.

  In order to increase the success rate of yarn suction, the open end 11.3 of the suction means 14 has a groove 11.4. The groove 11.4 extends along the direction towards the cutting element 17 and the capture element 16 and extends through the cross section of the open end 11.3. In the above-described machining process of the auxiliary device 1, after the bobbin 10 reaches a predetermined parameter value, the lifting and lowering of the descending yarn guide 20 is positioned so that the yarn 6 is accessible to the auxiliary device 1. Enable. The auxiliary device 1 rotates to a triangular area 6.1 so as to come into contact with the thread 6. Before the thread 6 is cut by the cutting element 17, the thread 6 first contacts the open end 11.3 of the suction tube 11 and the inwardly recessed part 16.1 of the capture element 16. The distance from the yarn 6 to the open end 11.3 at this moment determines the success rate at which the yarn end is sucked by the suction tube 11 after the yarn 6 is cut. Thus, the arrangement of the grooves 11.4 allows the thread 6 to make full contact with the open end 11.3. In other words, the thread 6 can be pressed completely against the open end 11.3. When the thread 6 is cut by the cutting element 17, the open end 11.3 can always suck the thread end without failing.

Claims (11)

  An auxiliary device for supporting bobbin replacement in a winding device, comprising: a rotatable suction means; and a guide means and a cutting means respectively disposed on the rotatable suction means, wherein the suction means comprises: Having an open end that utilizes negative pressure to suck the yarn end, the guide means having a capture element that cooperates with the open end to hold one section of the yarn; In the auxiliary device, the cutting means includes a cutting element that cuts a thread. The capture element, the open end, and the cutting element are arranged side by side, and the open end is connected to the capture element. An auxiliary device for supporting bobbin exchange in a winding device, wherein the auxiliary device is disposed between the cutting element and the cutting element.   The open end of the suction means has a groove extending along the direction to the cutting element and the capture element, the groove extending through a cross section of the open end. The auxiliary device according to claim 1.   The suction means has a bent suction pipe, the suction pipe has a vertical section and a horizontal section with the open end, and the suction means sucks the vertical section with the suction section. The auxiliary device according to claim 1, wherein the auxiliary device is used as a rotating shaft of the means.   The auxiliary device according to claim 3, wherein the suction unit is rotationally driven by a step motor.   The auxiliary device according to claim 3, wherein the guide unit and the cutting unit are arranged in the suction pipe in a form close to the open end.   The cutting means further comprises a first thread lifting section associated with one side of the cutting element, and the catch element of the guiding means further comprises a second thread lifting section, The auxiliary device according to any one of claims 1 to 5, wherein one yarn lifting section and the second yarn lifting section protrude from the open end of the suction means.   The first yarn lifting section of the cutting means is a yarn guide plate, the upper edge of the yarn guide plate close to the outside being higher than the upper edge of the cutting element close to the outside, the direction from the inside to the outside The upper edge of the yarn guide plate gradually descends, and the upper edge of the yarn guide plate close to the inside is lower than the upper edge of the cutting element close to the inside, and the direction from the inside to the outside The auxiliary device according to claim 6, characterized in that the upper edge of the cutting element gradually descends along the line.   The capture element of the guide means is arranged as a plate-like profile along a direction parallel to the horizontal section of the suction tube, and the capture element is capable of hooking a thread. A thread guide slope having an inwardly recessed portion of the profile, wherein the second thread lifting section is disposed outside the inwardly recessed part and descends in a direction from the inside to the outside. The auxiliary device according to claim 6, wherein:   The guide means and the cutting means are fixed to a carrier at a predetermined distance from the open end of the suction means, and the carrier is connected to the suction means. The auxiliary device according to 1.   The auxiliary device according to claim 1, wherein the cutting element has an upper cutter and a lower cutter arranged in a V-shaped arrangement.   The auxiliary device according to claim 1, wherein the cutting element is in a rear side position with respect to the open end, and the capture element is in a front side position with respect to the open end. .