CN111483883B

CN111483883B - Yarn supplying bobbin supplying device

Info

Publication number: CN111483883B
Application number: CN202010055370.0A
Authority: CN
Inventors: 井上敬; 中川隆
Original assignee: Murata Machinery Ltd
Current assignee: Murata Machinery Ltd
Priority date: 2019-01-25
Filing date: 2020-01-17
Publication date: 2022-10-04
Anticipated expiration: 2040-01-17
Also published as: CN111483883A; EP3686141B1; JP2020117368A; EP3686141A1

Abstract

The invention provides a yarn supplying bobbin supplying device, which can simply reduce the power consumption of a suction source connected with a yarn end cutting device. The yarn supplying bobbin supplying device is provided with a yarn end cutting device (13) having a cutting part for cutting yarn ends extending from a plurality of yarn supplying bobbins. A yarn end cutting device (13) is provided with: a suction section which is formed with a suction port connected to a suction source and which sucks the yarn end by a negative pressure supplied from the suction source through the suction port; a flexible tube (72) in which a communication path (76) that communicates the suction port with a suction source is formed; and an opening/closing unit (80), wherein the opening/closing unit (80) opens/closes at least one of the suction port and the communication path (76).

Description

Yarn supplying bobbin supplying device

Technical Field

The present invention relates to a yarn supplying bobbin supplying device for supplying a yarn supplying bobbin around which a yarn is wound.

Background

A yarn supplying bobbin supplying device described in jp 2008-230830 a transports a plurality of yarn supplying bobbins around which a yarn is wound by a vibration feeder. The yarn supplying bobbins conveyed by the vibratory feeder are dropped into a feeder magazine in which the yarn supplying bobbins are arranged. Here, the yarn end may be drawn out from the surface of the yarn supplying bobbin conveyed by the vibrating feeder to a long length or may be twisted together between a plurality of yarn supplying bobbins. When the yarn supplying bobbins are dropped into the feeder magazine in this state, there is a risk that the yarn supplying bobbins are entangled with each other and the yarn supplying bobbins cannot be smoothly arranged. In the yarn supplying bobbin, a yarn end cutting device for cutting the yarn end is provided between the vibratory feeder and the feeder magazine in the conveying direction. The yarn end cutting device includes a guide member that guides the yarn supplying bobbin to the downstream side in the conveying direction, and a cutter that cuts the yarn end extending from the yarn supplying bobbin.

Further, although not disclosed in japanese patent application laid-open No. 2008-230830, a yarn end cutting device in which a slit for sucking a yarn end is formed in the guide member has been conventionally known. More specifically, the yarn end cutting device is connected to a suction source that generates a negative pressure by rotating a fan by a motor, for example, and sucks the yarn end of the yarn supplying bobbin through a slit.

This makes it possible to suck, catch, and cut the yarn end extending from the yarn supplying bobbin. Further, since the cut yarn end is directly sucked and removed, the time and effort for removing the yarn end can be reduced.

The supply of the yarn supplying bobbin to the yarn end cutting device is not limited to the supply of the yarn supplying bobbin to the yarn end cutting device at all times, and for example, when the supply of the yarn supplying bobbin to the vibrating feeder is temporarily interrupted, the supply of the yarn supplying bobbin to the yarn end cutting device is also temporarily interrupted. If the negative pressure is continuously generated by the suction source in a state where the supply of the yarn supplying bobbin is interrupted in this way, the suction source wastes electric power. However, for example, if the power of the suction source is turned on or off depending on the presence or absence of the supply of the yarn supplying bobbin, there is a possibility that the production efficiency is deteriorated due to time and labor.

Disclosure of Invention

The purpose of the present invention is to simply reduce the power consumption of a suction source connected to a yarn end cutting device.

A yarn supplying bobbin supplying device according to claim 1 includes: a yarn supplying bobbin conveying device that conveys a plurality of yarn supplying bobbins on which yarns are wound; a yarn supplying bobbin arraying device which is arranged downstream of the yarn supplying bobbin conveying device in a conveying direction in which the plurality of yarn supplying bobbins are conveyed, and which arrays the plurality of yarn supplying bobbins; and a yarn end cutting device which has a cutting portion for cutting yarn ends extending from the plurality of yarn supplying bobbins, and is disposed between the yarn supplying bobbin conveying device and the yarn supplying bobbin arranging device in the conveying direction, the yarn end cutting device including: a suction unit that is formed with a suction port connected to a suction source and sucks the yarn end by negative pressure supplied from the suction source through the suction port; a communication member formed with a communication path that communicates the suction port with the suction source; and an opening/closing unit that can switch a state of the suction unit between a supply state in which the negative pressure is supplied through the suction port and a non-supply state in which the negative pressure is not supplied through the suction port by opening or closing at least one of the suction port and the communication path.

In the present invention, the yarn end extending from the yarn supplying bobbin is sucked and caught by supplying a negative pressure through the suction port. Here, in the non-supply state, the load on the suction source is generally smaller than that in the supply state, and the suction source can be operated with less power consumption. Therefore, the power consumption of the suction source connected to the yarn end cutting device can be reduced easily by the opening/closing section.

The yarn supplying bobbin supplying device according to claim 2 is characterized in that, in the above-described claim 1, the opening/closing portion is capable of adjusting an opening degree of at least one of the suction port and the communication path.

For example, in the case of transporting a yarn supplying bobbin around which a yarn that is difficult to be twisted together is wound, or a yarn that is easily broken even if it is temporarily twisted together is wound, the yarn end is more easily attracted and caught than in the case of transporting a yarn supplying bobbin around which a yarn that is easily twisted together is wound. Therefore, when a yarn supplying bobbin or the like around which a yarn that is difficult to be twisted together is wound is conveyed, the absolute value of the negative pressure can be reduced to weaken the suction force. In the present invention, the absolute value of the negative pressure to be supplied can be changed by adjusting the opening degree of at least one of the suction port and the communication path by the opening/closing unit. Therefore, the load on the suction source can be effectively reduced according to the yarn type and the like.

A yarn supplying bobbin supplying device according to claim 3 is characterized in that, in the above-described 1 or 2, the suction portion has a function as a guide member in which a guide path for guiding the plurality of yarn supplying bobbins to a downstream side in the conveying direction is formed, and the suction port is formed in the guide member.

In the present invention, an increase in the number of components can be suppressed as compared with a case where the suction port is formed in a component other than the guide member. In addition, the yarn end extending from the yarn supplying bobbin moving on the guide path can be easily sucked.

A yarn supplying bobbin supplying device according to claim 4 is characterized in that, in any one of the aspects 1 to 3, the suction unit has a function as a guide member in which a guide path for guiding the plurality of yarn supplying bobbins to a downstream side in the conveying direction is formed, and the yarn end cutting device has a 1 st swing driving unit for swinging the guide member.

When a plurality of yarn supplying bobbins are stacked and transported by the yarn supplying bobbin transporting device in a chevron shape, for example, the plurality of yarn supplying bobbins may be difficult to move on the guide path. Further, the yarn end is likely to be caught between the yarn supplying bobbins, and the like, and therefore, the yarn end is likely to be sucked by the suction portion. In the present invention, the guide member is actively swing-driven by the 1 st swing drive section. Therefore, even when a plurality of yarn supplying bobbins are conveyed in a stacked state, the mountain where the plurality of yarn supplying bobbins are stacked can be broken by swinging the plurality of yarn supplying bobbins located on the guide path.

A yarn supplying bobbin supplying device according to claim 5 is the yarn supplying bobbin supplying device according to any one of claims 1 to 4, wherein the suction portion has a function as a guide member having a guide path formed to guide the plurality of yarn supplying bobbins to a downstream side in the conveying direction, and the yarn end cutting device includes: a swing member swingable in a space above the guide path; and a 2 nd swing drive unit configured to swing the swing member.

In the present invention, the swinging member is swung in the space above the guide path, whereby the swinging member can be caused to interfere with the plurality of yarn supplying bobbins. Therefore, even when a plurality of yarn supplying bobbins are conveyed in a stacked state, the mountain formed by stacking the plurality of yarn supplying bobbins positioned on the guide path can be broken by the swing member.

A yarn supplying bobbin supplying device according to claim 6 is characterized in that, in any one of the aspects 1 to 5, the yarn supplying bobbin arraying device includes a receiving portion which opens upward and receives the plurality of yarn supplying bobbins, the suction portion has a function as a guide member in which a guide path which guides the plurality of yarn supplying bobbins to one side in a predetermined guide direction intersecting with a vertical direction and is arranged above the receiving portion is formed, a yarn end guide slit which extends at least to the other side in the guide direction is formed at an end portion of the guide member on the one side in the guide direction, the suction port is arranged at the other side in the guide direction than the yarn end guide slit, and the cutting portion has a yarn end cutter which cuts the yarn which enters the end portion of the yarn guide slit on the other side in the guide direction.

In the present invention, the plurality of yarn supplying bobbins are received by the receiving portion of the yarn supplying bobbin arranging device by dropping from the downstream end portion in the conveying direction of the guide member (i.e., one end portion in the guiding direction) due to their own weight. Here, before the yarn supplying bobbin falls from the guide member, the yarn end can be sucked in advance through a suction port arranged on the other side in the guide direction (i.e., on the upstream side in the conveying direction) than the yarn end guide slit. Thus, when the yarn supplying bobbin falls from the guide member, the middle portion of the yarn end can be made to enter the yarn end guide slit extending at least to the other side in the guiding direction. Therefore, the yarn end entering the yarn end guide slit can be reliably cut by the cutter.

The yarn supplying bobbin supplying device according to claim 7 is characterized in that, in the yarn end cutting device according to claim 6, the yarn end cutting device includes a blowing section which is arranged on the one side in the guiding direction than the yarn end guiding slit and blows a gas toward the guiding member at least to the other side in the guiding direction.

In the present invention, the yarn end extending from the yarn supplying bobbin can be actively moved at least to the other side in the guiding direction by the gas blown to the guide member. Therefore, the yarn end can be made to easily enter the yarn end guide slit.

A yarn supplying bobbin supplying device according to claim 8 is characterized in that, in any one of the aspects 1 to 5, the opening and closing portion has the cutting portion, and the cutting portion has a cutting member capable of opening and closing the suction port and cutting the yarn end when the suction port is closed.

In a configuration in which the opening/closing section simply switches the state of the suction section between the supply state and the non-supply state, when the yarn end to be sucked is wound around the opening/closing section, the opening/closing section is difficult to operate, and there is a risk that an opening/closing failure of the opening/closing section occurs. In the present invention, the yarn end is also cut by the opening/closing portion. The cut yarn end is directly sucked and removed by the suction part. This can prevent the yarn end from being entangled with the opening/closing portion, and can prevent the opening/closing portion from being opened or closed poorly.

A yarn supplying bobbin supplying device according to claim 9 is characterized in that, in any one of the above-described aspects 1 to 8, the yarn end cutting device includes a plurality of the cutting sections, and each cutting section includes the suction section.

In the present invention, suction ports are provided corresponding to the respective cutting portions. Therefore, the yarn end located near the cutting section can be easily sucked and captured.

Drawings

Fig. 1 is a schematic view of a yarn winding device including a yarn supplying bobbin supplying device according to the present embodiment.

Fig. 2 is a side view of the yarn supplying bobbin supplying device.

Fig. 3 is a perspective view of the yarn supplying bobbin supplying device.

Fig. 4 (a) to 4 (c) are explanatory views showing a basic configuration of the yarn end cutting device.

Fig. 5 (a) to 5 (c) are explanatory views showing the operation of the yarn end when the yarn supplying bobbin passes through the yarn end cutting device.

Fig. 6 (a) and 6 (b) are explanatory views showing the opening/closing unit.

Fig. 7 (a) and 7 (b) are explanatory views showing a mechanism for swinging the guide member.

Fig. 8 (a) and 8 (b) are plan views of the yarn-end cutting device according to modification 1.

Fig. 9 (a) and 9 (b) are side views of the yarn end cutting device according to modification 1.

Fig. 10 is a plan view of a yarn-end cutting device according to modification 2.

Fig. 11 (a) and 11 (b) are front views of a yarn end cutting device according to modification 3.

Fig. 12 (a) and 12 (b) are front views of a yarn end cutting device according to a modification 4.

Fig. 13 is a plan view of a yarn end cutting device according to modification 5.

Fig. 14 is a plan view of a yarn end cutting device according to modification 6.

Detailed Description

Next, embodiments of the present invention will be explained. For convenience of explanation, the vertical direction on the paper surface in fig. 1 is defined as the vertical direction (vertical direction) in which gravity acts, the horizontal direction on the paper surface in fig. 2 is defined as the front-rear direction, and the direction perpendicular to both the vertical direction and the front-rear direction is defined as the horizontal direction.

(yarn winding device)

First, an outline of a yarn winding device 1 including a yarn supplying bobbin supplying device 2 according to the present embodiment will be described with reference to fig. 1. As shown in fig. 1, the yarn winding device 1 includes a yarn supplying bobbin supplying device 2, a yarn supplying bobbin handling device 3, a yarn winding machine 4, and a machine base control device 5.

The yarn supplying bobbin supplying device 2 conveys the yarn supplying bobbin B around which the yarn is wound by a not-shown spinning machine that spins the yarn, and supplies the yarn supplying bobbin B to the yarn supplying bobbin processing device 3. The yarn supplying bobbin processing device 3 performs a predetermined process for smoothly unwinding the yarn wound around the yarn supplying bobbin B by the yarn winding machine 4. The yarn winding machine 4 has a plurality of winding units 4a. Each winding unit 4a unwinds the yarn from the yarn supplying bobbin B, and winds the yarn around the winding tube to form a package while removing a yarn defect. The machine control device 5 controls the entire yarn winding device 1 in a unified manner.

The yarn winding device 1 further includes a suction source 6 (see fig. 3, described later in detail), and the suction source 6 sucks the yarn end Y (see fig. 3) extending from the yarn supplying bobbin B fed from the yarn supplying bobbin supplying device 2.

(yarn supplying bobbin supplying device)

Next, the structure of the yarn supplying bobbin supplying device 2 will be described with reference to fig. 2 and 3. Fig. 2 is a side view of the yarn supplying bobbin supplying device 2. Fig. 3 is a perspective view of the yarn supplying bobbin supplying device 2. The arrow shown in fig. 2 indicates the transport direction in which the yarn supplying bobbin B is transported. As shown in fig. 2 and 3, the yarn supplying bobbin supplying device 2 includes a yarn supplying bobbin receiving box 11, a yarn supplying bobbin delivering device 12, a yarn end cutting device 13, a yarn supplying bobbin arraying device 14, and a control device 15.

The yarn supplying bobbin receiving box 11 is a box for receiving a plurality of yarn supplying bobbins B on which yarns are wound. The yarn supplying bobbin receiver 11 is disposed at the rear end of the yarn supplying bobbin supplying device 2. The yarn supplying bobbin receiver 11 can be moved between an initial position (see a solid line) and a supply position (see a two-dot chain line), for example, by a hydraulic cylinder 11 a. When the yarn supplying bobbin receiver 11 is moved from the home position to the supply position, the plurality of yarn supplying bobbins B, which are dropped into the yarn supplying bobbin receiver 11 by an operator or a yarn supplying bobbin drop device not shown, drop onto the yarn supplying bobbin transfer device 12 by their own weight.

The yarn supplying bobbin conveying device 12 is a device that conveys a plurality of yarn supplying bobbins B supplied from the yarn supplying bobbin receiving box 11. The yarn supplying bobbin conveying device 12 is disposed between the yarn supplying bobbin receiver 11 and the yarn end cutting device 13 in the conveying direction of the yarn supplying bobbin B. The yarn supplying bobbin conveying device 12 includes: a mounting member 22 having a mounting path 21 for mounting a plurality of yarn supplying bobbins B; and a vibration motor 23 for vibrating the mounting member 22. The yarn supplying bobbin conveying device 12 is configured to be capable of conveying the yarn supplying bobbin B on the mounting path 21 forward by vibrating the mounting member 22 by the vibration motor 23. Normally, the plurality of yarn supplying bobbins B supplied from the yarn supplying bobbin receiver 11 are stacked and transported on the mounting path 21 in a mountain shape. Therefore, the yarn end Y may be drawn out from the surface of the yarn supplying bobbin B long or may be twisted between a plurality of yarn supplying bobbins B.

The yarn end cutting device 13 is a device for cutting the yarn end Y extending from the yarn supplying bobbin B. The yarn end cutting device 13 is disposed between the yarn supplying bobbin conveying device 12 and the yarn supplying bobbin arraying device 14 in the conveying direction. The yarn end cutting device 13 includes a guide member 31 for guiding the plurality of yarn supplying bobbins B forward and downward. A more specific configuration of the yarn end cutting device 13 will be described later.

The yarn supplying bobbin arranging device 14 is a device for arranging a plurality of yarn supplying bobbins B and conveying them one by one to the downstream side in the conveying direction (the yarn supplying bobbin processing device 3 side described above). The yarn supplying bobbin arraying device 14 is disposed downstream of the yarn supplying bobbin conveying device 12 and the yarn end cutting device 13 in the conveying direction. The yarn supplying bobbin arranging device 14 includes: a housing 41; a magazine portion 42 (a receiving portion of the present invention), the magazine portion 42 being disposed inside the housing 41 and below the guide member 31 of the yarn end cutting device 13; and an oscillation solenoid 43, the oscillation solenoid 43 causing the magazine part 42 to oscillate. The cartridge portion 42 opens upwardly. A spiral passage 44 for horizontally placing the yarn supplying bobbin B is formed in the magazine portion 42. The yarn supplying bobbin arraying device 14 is configured to convey the yarn supplying bobbin B along the passage 44 by vibrating the magazine portion 42 by the vibration solenoid 43.

The control device 15 is electrically connected to the hydraulic cylinder 11a, the vibration motor 23, the vibration solenoid 43, and the like, and performs drive control of these components.

(yarn end cutting device)

Next, a more specific configuration of the yarn end cutting device 13 will be described with reference to fig. 3 to 4. Fig. 4 (a) is a plan view of the guide member 31. Fig. 4 (b) is an explanatory view showing a member and the like disposed below the guide member 31. Fig. 4 (c) is a side view of the yarn end cutting device 13.

The yarn end cutting device 13 is a device that cuts the yarn end Y extending from the yarn supplying bobbin B while guiding the plurality of yarn supplying bobbins B conveyed by the yarn supplying bobbin conveying device 12 to the downstream side in the conveying direction (the side of the yarn supplying bobbin arraying device 14). The yarn end cutting device 13 includes a guide member 31 (see fig. 3 and 4 (a) to (c)) for guiding the plurality of yarn supplying bobbins B, and a plurality of cutting portions 32 (see fig. 4 (B)) for cutting the yarn end Y. As described later, the yarn end cutting device 13 is configured to be able to suck and catch the yarn end Y.

The guide member 31 (suction portion of the present invention) is formed by sheet metal working a metal plate, for example. The guide member 31 is disposed above the magazine portion 42 of the yarn supplying bobbin arraying device 14 (see fig. 3). The guide member 31 has: a bottom portion 52 having a planar guide path 51 formed therein and extending downward and forward; and two side portions 53, the two side portions 53 extending upward from both left and right end portions of the bottom portion 52. The guide path 51 is inclined downward toward the front. The extending direction of the guide path 51, i.e., the direction in which the plurality of yarn supplying bobbins B are guided along the guide path 51 is set as a guide direction (see fig. 4 (c)). The guide direction intersects with the up-down direction. In the guiding direction, the yarn supplying bobbin conveying device 12 side is a base end side (the other side of the present invention), and the opposite side is a tip end side (the one side of the present invention). The left-right direction is defined as the width direction of the guide path 51. The guide path 51 need not be planar, but may be curved.

As shown in fig. 3 and 4 (a), a suction port 54 that penetrates the bottom portion 52 in the vertical direction and extends in the horizontal direction is formed at a middle portion of the bottom portion 52 in the guide direction. A plurality of yarn end guide slits 55 are formed at the leading end portion of the bottom portion 52 in the guide direction toward the base end side at least in the guide direction. In other words, the suction port 54 is disposed on the base end side in the guide direction with respect to the yarn end guide slit 55. The plurality of yarn end guide slits 55 are formed side by side in the width direction. Each yarn end guide slit 55 is curved so as to narrow in width from the leading end portion of the bottom portion 52 in the guide direction toward the base end side. The yarn end guide slit 55 need not be curved, and may extend straight, for example. Further, the yarn end guide slit 55 does not need to be narrowed in width from the leading end portion of the bottom portion 52 in the guide direction toward the base end side.

The side portion 53 of the guide member 31 is provided to prevent the yarn supplying bobbin B moving on the guide path 51 from falling off from the guide path 51. The front end of the side portion 53 is swingably supported by an L-shaped support member 56, for example. The rear end of the side portion 53 is supported from below by a plate-like support member 57, for example (see details below).

As shown in fig. 4 (b), the cutting portion 32 is disposed below the bottom portion 52 of the guide member 31. The cutting unit 32 includes: a scissors-shaped cutter 61, the cutter 61 being disposed directly below the proximal end side end portion in the guiding direction of the yarn end guiding slit 55; and a cylinder 62, the cylinder 62 operating the cutter 61. The air cylinder 62 is controlled by the control device 15. The cutter 61 is driven by the air cylinder 62 to cut the yarn end Y that has entered the base end side end portion in the guide direction of the yarn end guide slit 55. The cylinder 62 for operating the cutter 61 may be replaced with a motor, for example.

As described above, the yarn winding device 1 is provided with the suction source 6 (see fig. 3). The suction source 6 includes an electric motor 6a and a fan 6b rotationally driven by the motor 6 a. The motor 6a is driven and controlled by the machine control device 5 so as to maintain a constant rotational speed, for example. The suction source 6 is connected to the suction port 54 of the guide member 31 via a connection member 71 and a flexible tube 72, which will be described later. Thereby, the yarn end cutting device 13 can suck the yarn end Y extending from the yarn supplying bobbin B through the suction port 54.

The connecting member 71 is a hollow member attached to the lower surface of the bottom portion 52 of the guide member 31. The connecting member 71 is formed with an opening 73 having a shape similar to the suction port 54 of the guide member 31. The inner space 74 of the connecting member 71 communicates with the suction port 54 via the opening 73. Further, the connection member 71 is connected to a flexible tube 72. The flexible tube 72 is, for example, a bendable hose having a bellows configuration. One end of the flexible tube 72 is connected to the connection member 71, and the other end is connected to the suction source 6. The flexible tube 72 is, for example, wound inside the housing 41 of the yarn supplying bobbin arraying device 14 and extends from the side surface of the housing 41 to the outside of the housing 41 (see fig. 3). A communication path 76 that communicates the suction source 6 with the suction port 54 is formed by the internal space 74 of the connection member 71 and the internal space 75 of the flexible tube 72. Thereby, a negative pressure is supplied to the space near the suction port 54 via the suction port 54. The connection member 71 and the flexible tube 72 correspond to a communication member of the present invention.

(yarn end cutting operation by yarn end cutting device)

The cutting operation of the yarn end Y by the yarn end cutting device 13 will be described with reference to (a) to (c) of fig. 5. Fig. 5 (a) to (c) are explanatory views showing the operation of the yarn end Y when the yarn supplying bobbin B passes through the yarn end cutting device 13. In order to avoid complication of the drawing, only one yarn supplying bobbin B is illustrated in fig. 5 (a) to (c).

First, the yarn supplying bobbin B is conveyed to the downstream end of the mounting path 21 in the conveying direction by the yarn supplying bobbin conveying device 12 (see fig. 5 a). Thereafter, the yarn supplying bobbin B slides down by its own weight while being guided along the guide path 51 (see fig. 5 (B)). When the yarn supplying bobbin B moves along the guide path 51, the yarn end Y extending from the yarn supplying bobbin B is sucked and caught by the negative pressure supplied through the suction port 54. Further, the yarn supplying bobbin B moves to the leading end of the guide path 51 in the guide direction and then drops from the guide member 31 by its own weight (see the two-dot chain line in fig. 5B). At this time, the middle portion of the yarn end Y is guided to the base end side in the guiding direction by one of the plurality of yarn end guiding slits 55, and enters the end portion of the base end side in the guiding direction of the yarn end guiding slit 55 (see the arrow of the two-dot chain line in fig. 5 (c)). The yarn end Y entering the end on the proximal end side in the guiding direction of the yarn end guiding slit 55 is cut by the cutting section 32 (see fig. 4 (b)). The cut yarn end Y passes through the communication path 76 (see fig. 4 c) at its tip end portion and is sucked and removed.

Here, the supply of the yarn supplying bobbin B to the yarn end cutting device 13 is not limited to the supply of the yarn supplying bobbin B to the yarn end cutting device 13 at all times, and for example, when the supply of the yarn supplying bobbin B to the yarn supplying bobbin transferring device 12 is temporarily interrupted, the supply of the yarn supplying bobbin B to the yarn end cutting device 13 is also temporarily interrupted. If the negative pressure is continuously generated by the suction source 6 in the state where the supply of the yarn supplying bobbin B is interrupted in this way, the suction source 6 wastes electric power. However, if the power of the suction source 6 is turned on or off in response to the supply of the yarn supplying bobbin B, the production efficiency may be deteriorated due to time and labor. In order to simply reduce the power consumption of the suction source 6 connected to the yarn end cutting device 13, the yarn end cutting device 13 includes an opening/closing unit 80 described later.

(opening/closing section)

The structure of the opening/closing unit 80 will be described with reference to fig. 3 and (a) and (b) of fig. 6. Fig. 6 (a) is a front view of the opening/closing portion 80 and its vicinity. Fig. 6 (b) is a sectional view taken along line VI (b) -VI (b) of fig. 6 (a).

As described above, the yarn end cutting device 13 includes the opening/closing section 80. In the present embodiment, the opening/closing unit 80 is configured to open and close the flexible tube 72, which is a part of the communication member. As an example, as shown in fig. 6 (a), the opening/closing portion 80 is disposed in front of the housing 41 of the yarn supplying bobbin arranging device 14. As shown in fig. 6 (a) and (b), the opening/closing unit 80 includes a housing 81, a shutter 82, and a shutter moving mechanism 83.

The housing 81 is a member having a closed space formed therein. The flexible tube 72 is connected to the housing 81. More specifically, one end of the 1 st flexible tube 84 provided on the yarn end cutting device 13 side is connected to the rear end of the housing 81. One end of a 2 nd flexible tube 85 provided on the suction source 6 side is connected to the front end of the housing 81.

The baffle 82 is a plate-like member disposed inside the case 81. The shutter 82 is provided to open and close an opening 84a at one end of the 1 st flexible tube 84, for example. The end surface of the baffle 82 has a larger area than the opening 84 a. The shutter 82 is moved and driven by a shutter moving mechanism 83.

The shutter moving mechanism 83 is a mechanism for switching the position of the shutter 82. The barrier moving mechanism 83 is, for example, a ball screw mechanism having a screw shaft 86 extending in the vertical direction and a nut 87 screwed to the screw shaft 86, but is not limited thereto. For example, a rotary shutter that opens and closes by rotating about a rotary shaft may be used. The retainer 82 is fixed to the nut 87. The screw shaft 86 is rotationally driven by a motor 88. The motor 88 is driven and controlled by the control device 15. When the motor 88 rotationally drives the screw shaft 86, the nut 87 and the stopper 82 move in the axial direction of the screw shaft 86. Thus, the flapper 82 can move between an open position (see the solid line in fig. 6 b) at which the opening 84a of the 1 st flexible tube 84 is completely opened and a closed position (see the two-dot chain line in fig. 6 b) at which the opening 84a is completely covered. The shutter 82 can also be moved to a half-open position (see the alternate long and short dash line in fig. 6 b) where only the opening 84a is opened halfway, for example. In this way, the opening/closing unit 80 is configured to be able to adjust the opening degree of the 1 st flexible tube 84.

When the flapper 82 is at the open position, a negative pressure is supplied by the suction source 6 through the suction port 54 of the guide member 31 (see fig. 4 (a) and the like) (that is, the suction portion is brought into a supply state). At this time, the fan 6b is rotated by the motor 6a of the suction source 6, and the air near the suction port 54 of the guide member 31 is discharged through the internal space 74 of the connection member 71 and the internal space 75 of the flexible tube 72, thereby supplying negative pressure to the space near the suction port 54. On the other hand, when the flapper 82 is at the closed position, negative pressure supply via the suction port 54 is not performed (that is, the suction portion is in the non-supply state). A large amount of air is continuously discharged in the supply state, and air is not discharged in the non-supply state. Here, as described above, the motor 6a is controlled to rotate the fan 6b at a constant rotation speed. Therefore, in a supply state in which a large amount of air needs to be continuously discharged, the load on the motor 6a is relatively large. On the other hand, in the non-supply state as described above, the load on the motor 6a is relatively small. Therefore, the power consumption of the motor 6a is reduced in the non-supply state as compared with the supply state.

(other structures)

Next, the structure of the yarn-end cutting device 13 will be described with reference to fig. 7 (a) and (b). Fig. 7 (a) and (b) are explanatory views showing a swing mechanism 90 for swinging the guide member 31.

As described above, the plurality of yarn supplying bobbins B are stacked and conveyed from the yarn supplying bobbin conveying device 12 in a mountain shape (see fig. 7 (a)). Therefore, for example, there is a possibility that the plurality of yarn supplying bobbins B are difficult to move on the guide path 51. Further, the yarn end Y is likely to be caught between the plurality of yarn supplying bobbins B, and the like, and therefore, there is a possibility that the yarn end Y is difficult to be sucked. Then, the yarn end cutting device 13 further includes a swing mechanism 90. The swing mechanism 90 includes a support member 56 and an air cylinder 93 (the 1 st swing drive unit of the present invention).

The support member 56 is, for example, an L-shaped member (see fig. 3). Specifically, a portion of the support member 56 extending in the vertical direction is fixed to the housing 41 of the yarn supplying bobbin arraying device 14 (see fig. 3). The portion of the support member 56 extending in the left-right direction serves as a swing axis, and supports the side portion 53 of the guide member 31 so as to be able to swing (see fig. 4 (a) to (c)). The rear end portions of the side portions 53 are supported from below by a support member 57 (see fig. 4 (a), etc.). Specifically, as shown in fig. 4 (a) and 5 (a) to (c), the right end of the left support member 57 (support member 91) is cut out to form an upward surface 91a. The left end of the right support member 57 (support member 92) is cut out to form an upward surface 92a. The rear end portions of the side portions 53 of the guide member 31 are supported by the

support members

91, 92 when they are in contact with the

surfaces

91a, 92a so as to be placed on these surfaces.

The cylinder 93 has a piston rod 94 disposed to be capable of extending and contracting in a substantially vertical direction. The distal end of the piston rod 94 is attached to the rear end of the side portion 53 of the guide member 31. The air cylinder 93 is connected to a compressed air source not shown. When compressed air is supplied to the cylinder 93 by a compressed air source through a pipe not shown, the piston rod 94 extends, and when the compressed air is discharged from the cylinder 93, the piston rod 94 contracts. The supply and discharge of the compressed air can be switched by an electromagnetic valve, not shown, controlled by the control device 15.

When the cylinder 93 is operated to extend and contract the piston rod 94, the guide member 31 is swung in a substantially vertical direction about the support member 56 as a swing shaft (see an arrow in fig. 7 (b)). Thereby, the plurality of yarn supplying bobbins B positioned on the guide path 51 oscillate. This makes it possible to break a mountain formed by stacking a plurality of yarn supplying bobbins B. Further, the control device 15 (see fig. 2) may temporarily stop the operation of the yarn supplying bobbin conveying device 12 when the guide member 31 is swung. Thus, when the guide member 31 swings, the yarn supplying bobbin B can be prevented from falling from the gap between the mounting member 22 of the yarn supplying bobbin conveying device 12 and the guide member 31 of the yarn end cutting device 13.

As described above, in the state where the negative pressure is not supplied (non-supply state), the load on the suction source 6 becomes smaller than in the state where the negative pressure is supplied (supply state), and the suction source 6 can be operated with less power consumption. Therefore, the power consumption of the suction source 6 connected to the yarn-end cutting device 13 can be reduced easily by the opening/closing section 80.

Further, the absolute value of the negative pressure to be supplied can be changed by adjusting the opening degree of the flexible tube 72 by the opening/closing unit 80. Therefore, the load on the suction source 6 can be effectively reduced according to the yarn type and the like.

Further, a suction port 54 is formed in the guide member 31. Therefore, an increase in the number of components can be suppressed as compared with the case where the suction port 54 is formed in a component other than the guide member 31. Further, the yarn end Y extending from the yarn supplying bobbin B moving on the guide path 51 can be easily sucked.

The guide member 31 is actively driven to swing by the air cylinder 93. Therefore, even when a plurality of yarn supplying bobbins B are conveyed in a stacked state, the mountain where the plurality of yarn supplying bobbins B are stacked can be broken by swinging the plurality of yarn supplying bobbins B positioned on the guide path 51.

Before the yarn supplying bobbin B falls from the guide member 31, the yarn end Y can be sucked in advance through the suction port 54 disposed on the base end side in the guide direction (i.e., on the upstream side in the conveying direction) of the yarn end guide slit 55. Thus, when the yarn supplying bobbin B falls from the guide member 31, the middle portion of the yarn end Y can be caused to enter at least the yarn end guide slit 55 extending to the other side in the guiding direction. Therefore, the yarn end Y entering the yarn end guide slit 55 can be reliably cut by the cutter 61.

Next, a modification of the above embodiment will be described. However, the same components as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted as appropriate.

(1) In the above embodiment, the opening/closing unit 80 (see fig. 6) is configured to be able to adjust the opening degree of the communication path 76, but is not limited thereto. The opening/closing unit 80 may open and close only the communication path 76.

(2) The yarn end cutting device 13 may further include a swing mechanism 100 as described below in order to break a mountain formed by stacking a plurality of yarn supplying bobbins B which are conveyed from the yarn supplying bobbin conveying device 12 in a stacked state. The following description will be made with reference to (a) and (b) of fig. 8 and (a) and (b) of fig. 9. The swing mechanism 100 includes a plate member 101 (a swing member of the present invention) and a cylinder 102 (a 2 nd swing driving portion of the present invention). First, as shown in fig. 8 (a), a gap 105 extending in the right-left direction is formed between the rear end 103 of the bottom portion 52 of the guide member 31 and the front end 104 of the mounting member 22 of the yarn supplying bobbin carriage 12. As shown in fig. 8 (b) and 9 (a) and (b), the plate member 101 extends in the vertical direction and the horizontal direction and is disposed so as to be able to pass through the gap 105. For example, support members 106 are attached to lower end portions of both right and left end portions of the plate member 101. Each support member 106 is attached to a piston rod 107 of the cylinder 102. The cylinder 102 is disposed such that a piston rod 107 is vertically extendable and retractable. Thus, the plate member 101 can be vertically swung by the air cylinder 102. In other words, the plate member 101 can swing in the space above the guide path 51. Here, the space above the guide path 51 is not limited to the space directly above the guide path 51, and includes the space directly above the gap 105. By swinging the plate member 101 in the space above the guide path 51, the plate member 101 can be caused to interfere with the plurality of yarn supplying bobbins B. Therefore, even when a plurality of yarn supplying bobbins B are conveyed in a stacked state (see fig. 9 a), the mountain where the plurality of yarn supplying bobbins B are stacked on the guide path 51 can be broken by the plate member 101 (see fig. 9B).

(3) The yarn-end cutting device 13 may have, for example, a swing mechanism 110 described below in addition to the swing mechanism 100 or instead of the swing mechanism 100. As shown in fig. 10, the swing mechanism 110 may include a bar member 111 swingable on the guide path 51 and a motor 112 for swinging and driving the bar member 111, instead of the plate member 101. The rod member 111 is swingable about a swing shaft 113 disposed forward of the guide member 31 as a swing center (see an arrow in fig. 10), for example. The tip end portion of the rod member 111 may be arranged to be swingable in a space above the guide path 51. In this case, the rod member 111 corresponds to the swing member of the present invention. The motor 112 corresponds to the 2 nd swing driving unit of the present invention. In such a configuration, the gap 105 may not be formed (see fig. 8 (a), etc.).

(4) In the above embodiment, the guide member 31 of the yarn end cutting device 13 is supported from below by the support member 57, but the present invention is not limited thereto. For example, the guide member 31 and the support member 57 may be fixed to each other, and the support member 57 may be supported from below by the housing 41 of the yarn supplying bobbin arraying device 14. Alternatively, the guide member 31 and the support member 57 may be formed as one member. That is, the air cylinder 93 may integrally swing both the guide member 31 and the support member 57.

(5) In the above embodiment, the guide member 31 of the yarn end cutting device 13 is configured to be swingable, but the invention is not limited thereto. The guide member 31 does not have to be able to swing.

(6) In the above embodiment, the opening/closing unit 80 opens and closes the 1 st flexible tube 84, but the present invention is not limited thereto. The opening/closing unit 80 may open and close the communication path 76 at another position. Alternatively, as shown in fig. 11 (a) and (b), an opening/closing unit 120 for opening/closing the suction port 54 of the guide member 31 may be provided in addition to the opening/closing unit 80 or in place of the opening/closing unit 80. The opening/closing unit 120 includes an opening/closing member 121 extending in the left-right direction and opening/closing the suction port 54. The opening/closing member 121 is disposed as follows, for example. That is, a through hole 53a that penetrates in the left-right direction and extends in the front-rear direction may be formed in a rear portion of the left and right side portions 53 of the guide member 31. The opening/closing member 121 extends in the left-right direction and is inserted into the two through holes 53a. The opening/closing member 121 has left and right end portions supported by two cylinders 122 so as to be movable along the through-holes 53a, for example. This allows the opening/closing member 121 to open and close the suction port 54. That is, the opening/closing member 121 is movable between an open position (see fig. 11 a) for opening the suction port 54 and a closed position (see fig. 11 b) for closing the suction port 54. Instead of the air cylinder 122, for example, a normal ball screw mechanism may be provided. That is, the opening degree of the suction port 54 may be adjusted by adjusting the position of the opening/closing member 121.

(7) In the above embodiment, the opening/closing unit 80 opens and closes only the suction port 54 and/or the communication path 76, but is not limited thereto. For example, as shown in fig. 12 (a) and (b), the yarn end Y may be cut by the opening/closing unit 130. In this case, the opening/closing unit 130 also corresponds to the cutting unit of the present invention. The opening/closing unit 130 includes an opening/closing member 131 (a cutting member of the present invention) extending in the left-right direction and similar to the opening/closing member 121. As a difference from the opening/closing member 121, the opening/closing member 131 is formed with a blade 132 extending in the left-right direction. The opening/closing member 131 is supported at both right and left ends thereof so as to be movable along the through-hole 53a by the two cylinders 122. Thereby, the opening/closing member 131 can move between the opening position (see fig. 12 a) for opening the suction port 54 and the closing position (see fig. 12 b) for closing the suction port 54. The opening/closing member 131 can cut the yarn end Y with the blade 132 when closing the suction port 54. In this way, the yarn end Y is also cut by the opening/closing portion 130. The cut yarn end Y passes through the communication path 76 directly at its tip end portion and is sucked and removed. This can prevent the yarn end Y from being entangled with the opening/closing section 130, and can prevent the opening/closing section 130 from being opened or closed poorly. Since the yarn end Y can be cut by the opening/closing unit 130, the cutting unit 32 (see fig. 4 (b)) as described above need not be provided. The yarn end guide slit 55 may not be formed in the guide member 31. Therefore, the dimension of the guide member 31 in the guide direction can be made compact.

(8) The yarn end cutting device 13 may have a structure for blowing gas toward the yarn end Y so that the yarn end Y extending from the yarn supplying bobbin B dropped from the guide member 31 is easily inserted into the yarn end guide slit 55. As shown in fig. 13, for example, the yarn end cutting device 13 has a nozzle member 141 (blowing section of the present invention) disposed at the front side of the guide member 31 (i.e., at least at the front end side of the yarn end guide slit 55 in the guide direction). The nozzle member 141 is disposed so that the distal end portion faces the guide member 31. As shown in fig. 13, the plurality of nozzle members 141 may be arranged in parallel in the left-right direction. Alternatively, only one nozzle member 141 may be provided. The nozzle member 141 is connected to a compressed air source 142. The pipe 143 for connecting the nozzle member 141 and the compressed air source 142 is opened and closed by, for example, an electromagnetic valve 144 controlled by the control device 15. Thereby, compressed air (gas of the present invention) can be blown from the tip of the nozzle member 141 toward the guide member 31 and at least toward the base end side in the guide direction. Therefore, the yarn end Y extending from the yarn supplying bobbin B can be actively moved at least to the base end side in the guiding direction by the compressed air. Therefore, the yarn end Y can be made easier to enter the yarn end guide slit 55. Alternatively, a fan not shown and a motor not shown for rotating the fan may be provided instead of the nozzle member 141 and the compressed air source 142. It is also possible to blow air toward the guide member 31 by such a structure.

(9) Each cutting section 32 of the yarn end cutting device 13 may have a suction section having a suction port formed therein. For example, as shown in fig. 14, suction ports 151 may be formed in the guide member 31 in the vicinity of the cutters 61, and the suction sources 6 may be connected to the suction ports 151. In the configuration in which the suction ports 151 are provided corresponding to the respective cutting portions 32 as described above, the yarn end Y located in the vicinity of the cutting portions 32 can be easily sucked and caught. In this case, the suction port 54 does not have to be formed.

(10) In the above embodiment, the suction port 54 is formed in the bottom portion 52 of the guide member 31, but the present invention is not limited thereto. For example, the side portion 53 may be formed with a suction port. Alternatively, another member having a suction port may be provided instead of the guide member 31.

(11) In the above embodiment, the position of the cutter 61 of the cutting section 32 is fixed, but the present invention is not limited thereto. For example, as described in japanese patent application laid-open No. 2008-230830, the cutter may be configured to be movable in the left-right direction.

(12) The opening/closing unit 80 and the like are controlled by the control device 15, but not limited thereto. The opening/closing unit 80 and the like may be manually operated by an operator.

(13) The yarn supplying bobbin supplying device 2 is not limited to the yarn winding device 1 described above, and can be applied to various devices that handle the yarn supplying bobbin B.

Claims

1. A yarn supplying bobbin supplying device includes:

a yarn supplying bobbin conveying device that conveys a plurality of yarn supplying bobbins on which yarns are wound;

a yarn supplying bobbin arranging device which is arranged downstream of the yarn supplying bobbin conveying device in a conveying direction in which the plurality of yarn supplying bobbins are conveyed, and which arranges the plurality of yarn supplying bobbins; and

a yarn end cutting device having a cutting portion for cutting yarn ends extending from the plurality of yarn supplying bobbins, and arranged between the yarn supplying bobbin conveying device and the yarn supplying bobbin arraying device in the conveying direction,

the yarn supplying bobbin supplying device is characterized in that,

the yarn end cutting device includes:

a suction unit that is formed with a suction port connected to a suction source and sucks the yarn end by negative pressure supplied from the suction source through the suction port;

a communication member formed with a communication path that communicates the suction port with the suction source; and

an opening/closing unit that can switch a state of the suction unit between a supply state in which the negative pressure is supplied through the suction port and a non-supply state in which the negative pressure is not supplied through the suction port by opening or closing at least one of the suction port and the communication path.

2. Yarn feeding bobbin supplying device as claimed in claim 1,

the opening/closing unit can adjust an opening degree of at least one of the suction port and the communication path.

3. Yarn feeding bobbin supplying device as claimed in claim 1,

the suction portion has a function as a guide member having a guide path formed to guide the plurality of yarn supplying bobbins to a downstream side in the conveying direction,

the suction port is formed in the guide member.

4. Yarn feeding bobbin supplying device according to claim 2,

the suction port is formed in the guide member.

5. Yarn feeding bobbin supplying device as in claim 1,

the yarn end cutting device has a 1 st swing drive unit that swings the guide member.

6. Yarn feeding bobbin supplying device according to claim 2,

the yarn end cutting device has a 1 st swing drive unit for swinging the guide member.

7. Yarn feeding bobbin supplying device according to claim 3,

8. Yarn feeding bobbin supplying device as claimed in claim 4,

9. Yarn feeding bobbin supply device according to any one of claims 1 to 8,

the yarn end cutting device includes:

a swinging member swingable in a space above the guide path; and

and a 2 nd swing drive unit configured to swing the swing member.

10. Yarn feeding bobbin supply device according to any one of claims 1 to 8,

the yarn feeding bobbin arraying device is provided with a receiving part which is opened upwards and receives the plurality of yarn feeding bobbins,

the suction portion has a function as a guide member having a guide path which is disposed above the receiving portion and guides the plurality of yarn supplying bobbins to one side in a predetermined guide direction intersecting with a vertical direction,

a yarn end guide slit extending at least to the other side in the guide direction is formed at the end portion of the guide member on the one side in the guide direction,

the suction port is disposed on the other side in the guide direction than the yarn end guide slit,

the cutting section has a cutter that cuts the yarn end that enters the other end portion in the guide direction of the yarn end guide slit.

11. Yarn feeding bobbin supplying device as in claim 9,

the yarn supplying bobbin arranging device has a receiving portion which opens upward and receives the plurality of yarn supplying bobbins,

the suction portion has a function as a guide member having a guide path arranged above the receiving portion and guiding the plurality of yarn supplying bobbins to one side in a predetermined guide direction intersecting with a vertical direction,

12. Yarn feeding bobbin supply device according to claim 10,

the yarn end cutting device has a blowing section that is arranged at the one side in the guide direction than the yarn end guide slit and blows a gas toward the guide member at least to the other side in the guide direction.

13. Yarn feeding bobbin supply device according to claim 11,

14. Yarn feeding bobbin supply device according to any one of claims 1 to 8,

the opening/closing part is provided with the cutting part,

the cutting section has a cutting member capable of opening and closing the suction port and cutting the yarn end when closing the suction port.

15. Yarn feeding bobbin supply device according to claim 9,

the opening and closing part is provided with the cutting part,

16. Yarn feeding bobbin supplying device as in any one of the claims 1 to 8, 11 to 13, 15,

the yarn end cutting device has a plurality of the cutting sections,

each cutting part is provided with the suction part.

17. Yarn feeding bobbin supply device according to claim 9,

the yarn end cutting device has a plurality of the cutting sections,

each cutting part is provided with the suction part.

18. Yarn feeding bobbin supply device according to claim 10,

the yarn end cutting device has a plurality of the cutting sections,

each cutting part is provided with the suction part.

19. Yarn feeding bobbin supply device according to claim 14,

the yarn end cutting device has a plurality of the cutting sections,

each cutting part is provided with the suction part.