阅读说明：本技术 切断装置、纱管搬运装置以及纱管供给装置 (Cutting device, bobbin conveying device and bobbin supplying device ) 是由 井上敬 于 2020-09-30 设计创作，主要内容包括：本发明涉及切断装置、纱管搬运装置以及纱管供给装置。可靠地消除从多个纱管延伸的退绕纱线缠绕的状态。上游侧切断装置(13)设置于移动路径(10),所述移动路径(10)卷绕有纱线的多个喂纱纱管(7)移动。上游侧切断装置(13)具备门部(31)和上游侧切断部(36)。门部(31)设置为能够相对于移动路径(10)的路面(21a)沿与喂纱纱管(7)的移动方向交叉的上下方向移动。通过该移动,能够在移动路径(10)中限制喂纱纱管(7)通过。上游侧切断部(36)以门部(31)为边界切断从喂纱纱管(7)退绕并延伸的退绕纱线(25)。(The invention relates to a cutting device, a bobbin conveying device and a bobbin supplying device. The state in which the unwound yarn extending from the plurality of bobbins is wound is reliably eliminated. The upstream side cutting device (13) is provided in a moving path (10), and a plurality of yarn supplying bobbins (7) on which yarns are wound in the moving path (10) move. The upstream cutting device (13) is provided with a gate section (31) and an upstream cutting section (36). The gate part (31) is provided so as to be movable in the vertical direction intersecting the movement direction of the yarn supplying bobbin (7) with respect to the road surface (21a) of the movement path (10). By this movement, the passage of the yarn supplying bobbin (7) can be restricted in the moving path (10). The upstream side cutting part (36) cuts the unwound yarn (25) unwound and extended from the yarn supplying bobbin (7) with the gate part (31) as a boundary.)

1. A cutting device provided in a bobbin movement path in which a plurality of bobbins on which a yarn is wound move, the cutting device comprising:

a regulating section provided to be movable in a vertical direction intersecting with a moving direction of the bobbin with respect to a road surface of the bobbin moving path, and moving to a1 st position where passage of the bobbin is regulated and a2 nd position below the 1 st position by moving above the road surface of the bobbin moving path; and

and a1 st cutting unit for cutting the yarn with the limiting unit as a boundary.

2. The shut-off device of claim 1,

the 1 st cutting portion is provided to the regulating portion, and the 1 st cutting portion moves integrally with the regulating portion.

3. The shut-off device according to claim 1 or 2,

the regulating unit alternately repeats a movement to the 1 st position and a movement to the 2 nd position, the 1 st position being a position where passage of the bobbin is regulated, and the 2 nd position being a position where passage of the bobbin is either reduced or not regulated.

4. The cutting device according to any one of claims 1 to 3,

the regulating portion moves in a direction orthogonal to a plane including a moving direction of the bobbin.

5. The cutting device according to any one of claims 1 to 4,

the restricting portion moves so that a step difference between an upper end portion of the restricting portion and the road surface changes.

6. The cutoff device according to claim 5,

the 1 st cutting part repeats the cutting operation,

the 1 st cutting unit performs a cutting operation when at least the regulating unit is located at the 1 st position among the repeated cutting operations.

7. A bobbin conveying device is characterized by comprising:

the cutting device according to any one of claims 1 to 6, and

a conveying path constituting at least a part of the bobbin moving path,

the regulating portion of the cutting device is disposed downstream of the conveying path in a moving direction of the bobbin in the conveying path.

8. The bobbin handling device according to claim 7,

comprises a2 nd cutting part for cutting the yarn,

the 2 nd cutting unit is disposed downstream of the regulating unit in the bobbin moving path.

9. The bobbin handling device according to claim 8,

a suction port is formed in the bobbin moving path on the downstream side of the regulating portion and on the upstream side of the 2 nd cutting portion,

a suction source for performing suction is connected to the suction port.

10. The bobbin handling device according to claim 9,

the suction source is driven while the regulating unit moves upward.

11. A bobbin conveying device according to any one of claims 7 to 10,

a1 st guide groove for guiding the yarn is formed in the restricting portion,

the 1 st cutting section cuts the yarn entering the 1 st guide groove.

12. The bobbin handling device according to claim 11,

in a state where the restriction portion is located at the 1 st position, an end portion of the 1 st guide groove on a side opposite to the open side is higher than the road surface.

13. The bobbin conveying device according to claim 11 or 12, comprising:

a guide member having a2 nd guide groove for guiding the yarn, and guiding the movement of the bobbin to a downstream side of the regulating portion; and

and a2 nd cutting unit which is disposed downstream of the regulating unit in the bobbin movement path and cuts the yarn entering the 2 nd guide groove.

14. The bobbin handling device according to claim 13,

the 2 nd cutting portion is provided in the 2 nd guide groove.

15. A bobbin handling device according to claim 13 or 14,

the 1 st guide groove formed in the regulating portion extends in a direction different from a direction in which the 2 nd guide groove formed in the guide member extends, when viewed from a direction orthogonal to a moving direction of the bobbin in the conveying path in a horizontal direction.

16. The bobbin handling device according to claim 15,

the 1 st guide groove formed in the regulating portion opens obliquely upward, upward in a vertical direction or upward in a downstream side thereof, when viewed from a direction orthogonal to a moving direction of the bobbin in the conveying path in a horizontal direction,

the 2 nd guide groove formed in the guide member opens obliquely downward in a horizontal direction and a downstream direction or a downstream side thereof from a perspective of a direction orthogonal to a moving direction of the bobbin in the conveying path in a horizontal direction.

17. A bobbin supplying device is characterized by comprising:

a bobbin handling device according to any one of claims 7 to 16; and

and a bobbin arranging device disposed downstream of the bobbin conveying device in the bobbin moving path.

18. The bobbin supplying device according to claim 17,

the bobbin arranging device is a vibration feeder.

19. A bobbin supplying device according to claim 17 or 18,

the yarn bobbin aligning device is provided with a control unit which moves the regulating unit when the conveying path is driven together with the yarn bobbin aligning device.

Technical Field

The present invention relates to a structure for cutting an unwound yarn drawn out from a yarn supplying bobbin when the yarn supplying bobbin around which the yarn is wound is conveyed.

Background

Conventionally, a bobbin supplying device for supplying a bobbin around which a yarn is wound is known. Japanese patent laid-open publication No. 2012-184074 discloses a yarn supplying bobbin supplying device.

The yarn supplying bobbin supplying device disclosed in japanese patent laid-open No. 2012-184074 can individually supply a plurality of yarn supplying bobbins to be loaded. The yarn supplying bobbin supplying device includes a yarn supplying bobbin input portion and an individualizing portion. The yarn supplying bobbin input portion includes a retention portion, a guide portion, and a fixed-amount conveying portion. The retention section temporarily retains the plurality of fed yarn supplying bobbins.

The guide portion guides the yarn supplying bobbin to an individualization portion for individualizing the plurality of yarn supplying bobbins. The quantitative conveying part is arranged between the retention part and the guide part. The quantitative conveying part is provided with a swinging component. The swinging member swings and feeds out only a predetermined amount of the yarn supplying bobbin accumulated in the accumulation portion to the guide portion. The swing member has a carrying plate on an upper surface thereof on which a yarn supplying bobbin is placed. A cutter for cutting the yarn unwound from the yarn supplying bobbin is provided at one end of the carrying plate.

In the yarn supplying bobbin supplying device of jp 2012-184074 a, the yarn may be unwound from the yarn supplying bobbin located in the retention portion, and the unwound yarn may be drawn from the yarn supplying bobbin. When the unwound yarns of the plurality of yarn supplying bobbins are intertwined with each other, the yarn supplying bobbins may be piled up and become a block. In the structure of japanese patent application laid-open No. 2012-184074, when a plurality of yarn supplying bobbins are stacked together over a predetermined amount defined by the size of the conveying plate and the yarn to be unwound is tightly wound, it is extremely difficult to place the massive bobbins on the swing member, and smooth conveyance is not possible.

With respect to the block-shaped yarn supplying bobbin, separation can be achieved by cutting the unwound yarn. However, in japanese patent application laid-open No. 2012-184074, since the cutter is disposed on the side opposite to the retention section via the swing member, it is difficult to cut the unwound yarn of the yarn supplying bobbin that is not placed on the swing member and is retained in the retention section by the cutter. However, since the swing member receives a fixed amount of the yarn supplying bobbin from the upstream and conveys the yarn supplying bobbin to the downstream as it is, the yarn supplying bobbin is discharged to the guide portion while maintaining a block shape by the swing operation of the swing member. Therefore, the unwound yarn between the block-shaped yarn supplying bobbins is cut by the cutter at a low rate.

When a plurality of yarn supplying bobbins, each of which is formed in a block shape and around which an unwound yarn is wound, are fed to an individualization portion, it is required to more reliably eliminate the winding of the unwound yarn because the individualization is hindered. Further, the structure of japanese patent application laid-open No. 2012-184074 uses a swing member for quantitative conveyance, and therefore requires a large space for placing and swinging a predetermined amount of the yarn supplying bobbin, which causes an increase in the size of the structure.

Disclosure of Invention

The purpose of the present invention is to reliably eliminate the state in which an unwound yarn extending from a plurality of bobbins is wound.

The problems to be solved by the present invention are as described above, and the means for solving the problems and the effects thereof will be described below.

According to the first aspect of the present invention, there is provided a cutting device having the following configuration. That is, the cutting device is provided in a bobbin moving path in which a plurality of bobbins around which a yarn is wound move. The cutting device comprises a limiting part and a1 st cutting part. The regulating portion is provided to be movable in a vertical direction intersecting with a moving direction of the bobbin with respect to a road surface of the bobbin moving path. The regulating portion is moved by the movement to a1 st position which is located above the road surface of the moving path and regulates the passage of the bobbin, and is moved to a2 nd position which is located below the 1 st position. The 1 st cutting unit cuts the yarn with the regulating unit as a boundary.

Thus, the regulating portion is moved relative to the yarn supplying bobbin group in which the plurality of yarn supplying bobbins are blocked by the winding of the unwound yarns, and thus, it is possible to form a state in which some of the plurality of yarn supplying bobbins pass through without passing the remaining yarn supplying bobbins. In other words, the state in which the unwound yarn passes over the restriction portion can be promoted. Then, the unwound yarn can be easily cut by the 1 st cutting unit. As a result, the yarn unwinding operation can be eliminated, and the subsequent operation of the yarn supplying bobbin can be facilitated.

In the cutting device, it is preferable that the 1 st cutting portion is provided in the regulating portion, and the 1 st cutting portion moves integrally with the regulating portion.

Thus, the unwound yarn that has contacted the regulating portion and acted on can be easily cut by the 1 st cutting portion while the regulating portion is moved.

In the above cutting device, it is preferable that the regulating portion alternately repeats the movement to the 1 st position and the movement to the 2 nd position, the 1 st position is a position where the bobbin passage is regulated, and the 2 nd position is a position where the regulation of the bobbin passage is weakened or the bobbin passage is not regulated.

Thus, the state in which the yarn supplying bobbin can easily pass through the regulating portion and the state in which the yarn supplying bobbin cannot easily pass through the regulating portion are repeated, and therefore, the state in which the unwound yarn passes over the regulating portion can be reliably promoted.

In the above-described cutting device, it is preferable that the regulating portion moves in a direction perpendicular to a plane including a moving direction of the bobbin.

With this configuration, the restriction of the passage of the yarn supplying bobbin can be changed with a simple configuration.

In the above cutting device, it is preferable that the regulating portion moves to change a step between an upper end portion of the regulating portion and the road surface.

Thus, the yarn supplying bobbin can be easily passed through the yarn supplying bobbin by a simple structure.

In the cutting device described above, the following configuration is preferably provided. That is, the 1 st cutting unit repeats the cutting operation. Preferably, at least the cutting operation when the regulating portion is located at the 1 st position among the repeated cutting operations is performed.

Thus, the 1 st cutting unit performs the cutting operation in a state where the unwound yarn is less slack, and thus can reliably cut the unwound yarn.

According to the 2 nd aspect of the present invention, there is provided a bobbin conveying device having the following configuration. That is, the bobbin conveying device includes the cutting device and the conveying path. The conveying path constitutes at least a part of the bobbin moving path. The regulating portion of the cutting device is disposed downstream of the conveying path in a moving direction of the bobbin in the conveying path.

Thus, the yarn supplying bobbin can be conveyed while effectively eliminating the winding of the unwound yarn in the bobbin conveying device.

In the bobbin conveying device described above, the following configuration is preferably provided. That is, the bobbin conveying device includes a2 nd cutting unit that cuts the yarn. The 2 nd cutting portion is disposed downstream of the regulating portion in the bobbin moving path.

This ensures a plurality of opportunities for cutting the unwound yarn, and thus can more reliably eliminate the entanglement of the unwound yarn.

In the bobbin conveying device described above, the following configuration is preferably provided. That is, a suction port is formed on the downstream side of the regulating portion and on the upstream side of the 2 nd cutting portion in the bobbin moving path. A suction source for performing suction is connected to the suction port.

Thus, the unwound yarn can be held by the suction port to cut the 1 st or 2 nd cutting section.

In the bobbin conveying device, it is preferable that the suction source is driven while the regulating portion moves upward.

When the yarn supplying bobbin and the unwound yarn are pressed and the regulating portion which is easy to move moves, the suction port performs suction, so that the unwound yarn can be efficiently caught by the suction port.

In the bobbin conveying device described above, the following configuration is preferably provided. That is, the 1 st guide groove for guiding the yarn is formed in the regulating portion. The 1 st cutting section cuts the yarn entering the 1 st guide groove.

Thus, the position of the unwound yarn can be stabilized by the 1 st guide groove, and the yarn can be cut by the 1 st cutting section.

In the bobbin conveying device, it is preferable that an end portion of the 1 st guide groove on a side opposite to an open side is higher than the road surface in a state where the regulating portion is located at the 1 st position.

This allows the unwound yarn entering the 1 st guide groove to be cut by the 1 st cutting unit while being kept in a tensioned state. Therefore, the stability and reliability of cutting can be improved.

In the bobbin conveying device described above, the following configuration is preferably provided. That is, the bobbin conveying device includes: a guide member having a2 nd guide groove for guiding the yarn, and guiding the movement of the bobbin to a downstream side of the regulating portion; and a2 nd cutting unit which is disposed downstream of the regulating unit in the bobbin movement path and cuts the yarn entering the 2 nd guide groove.

This stabilizes the position of the unwound yarn in the 2 nd guide groove and allows the 2 nd cutting unit to perform cutting.

In the above bobbin conveying device, the 2 nd cutting part is preferably provided in the 2 nd guide groove.

This makes it possible to reduce the size of the guide member.

In the above bobbin conveying device, it is preferable that, in a view angle viewed from a direction orthogonal to a moving direction of the bobbin in the conveying path in a horizontal direction, a direction in which the 1 st guide groove formed in the regulating portion extends is different from a direction in which the 2 nd guide groove formed in the guide member extends.

This can increase the probability that the unwound yarn enters any of the grooves and is cut.

In the bobbin conveying device described above, the following configuration is preferably provided. That is, the 1 st guide groove formed in the regulating portion opens in a vertically upward direction or an obliquely upward direction in which a downstream side thereof is an upper side, when viewed from a direction orthogonal to a moving direction of the bobbin in the transport path in a horizontal direction. The 2 nd guide groove formed in the guide member opens obliquely downward in a horizontal direction and a downstream direction or a downstream side thereof from a perspective of a direction orthogonal to a moving direction of the bobbin in the transport path in a horizontal direction.

Thereby, the unwound yarn easily enters the 1 st guide groove and the 2 nd guide groove, respectively. As a result, the cutting can be reliably performed.

According to the 3 rd aspect of the present invention, there is provided a bobbin supplying device having the following configuration. That is, the bobbin supplying device includes the bobbin conveying device and the bobbin arraying device described above. The bobbin arraying device is disposed downstream of the bobbin conveying device in the bobbin moving path.

This eliminates the problem that the plurality of yarn supplying bobbins are piled up and become a lump due to the winding of the unwound yarn, and the unwound yarn extends long from the yarn supplying bobbin, and the yarn supplying bobbins are smoothly supplied.

In the above bobbin supplying device, the bobbin alignment device is preferably a vibration feeder.

This enables the yarn supplying bobbin to be smoothly conveyed by the vibrating feeder.

In the bobbin supplying device described above, the following configuration is preferably adopted. That is, the bobbin supplying device includes a control unit. The control unit moves the regulating unit when the conveying path and the bobbin arraying device are driven.

Thus, the regulating portion can be operated when the bobbin conveying device and the bobbin arraying device actually carry the yarn supplying bobbin.

Drawings

Fig. 1 is a schematic view of an automatic winding system including a bobbin supplying device according to an embodiment of the present invention.

Fig. 2 is a schematic view of the bobbin supplying device.

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

Fig. 4 is a diagram showing the configurations of an upstream side cutting device and a downstream side cutting device provided in the bobbin conveying device.

Fig. 5 is a block diagram showing a configuration for controlling the upstream side cutting device and the downstream side cutting device.

Fig. 6 is an explanatory view showing how an unwound yarn extended from a yarn supplying bobbin and wound is cut by an upstream cutting device.

Fig. 7 is an explanatory view showing a state in which the unwound yarn is cut by the upstream cutting device in the state of fig. 6, and then the unwound yarn is caught by the suction port.

Fig. 8 is an explanatory view showing a state in which the unwound yarn extending from the yarn supplying bobbin is caught by the suction port before the yarn supplying bobbin passes through the regulating portion.

Fig. 9 is an explanatory view showing how the yarn supplying bobbin passes through the regulating portion in a state where the unwound yarn is not cut by the upstream side cutter from the state of fig. 8.

Detailed Description

Next, embodiments of the present invention will be described with reference to the drawings. First, an automatic winding system 1 including a bobbin supplying device 2 according to an embodiment of the present invention will be described with reference to fig. 1. Fig. 1 is a schematic view of an automatic winding system 1. As shown in fig. 1, the automatic winding system 1 includes: a bobbin supplying device 2, a bobbin processing device 3, an automatic winding machine 4, and a machine table control device 5.

The bobbin supply device 2 conveys a yarn supplying bobbin (bobbin) 7 around which a yarn is wound by a spinning machine that performs spinning on the yarn, and supplies the yarn to the bobbin processing device 3. The bobbin processing device 3 performs a predetermined process for smoothly unwinding the yarn wound around the yarn supplying bobbin 7 by the automatic winding machine 4. The automatic winder 4 has a plurality of winding units 9. Each winding unit 9 unwinds the yarn from the yarn supplying bobbin 7, removes a yarn defect, and winds the yarn around the winding bobbin to form a package. The machine control device 5 controls the entire automatic winding system 1 in a unified manner.

Next, the bobbin supplying device 2 will be described with reference to fig. 2 and 3. Fig. 2 is a schematic view of the bobbin supplying device 2. Fig. 3 is a perspective view of the bobbin supplying device 2.

The bobbin supplying device 2 has a movement path (bobbin movement path) 10 for moving the yarn supplying bobbin 7, and moves the yarn supplying bobbin 7 in the direction of an arrow a1 in fig. 2 along the movement path 10. As a result, the supply of the yarn supplying bobbin 7 to the bobbin processing device 3 is realized.

As shown in fig. 2, the bobbin supplying device 2 includes a bobbin conveying device 12, a bobbin arraying device 15, and a control device (control unit) 16.

The bobbin conveying device 12 includes: a bobbin loading device 11, a conveying path 21, a discharge guide (guide member) 41, an upstream side cutting device (cutting device) 13, and a downstream side cutting device 14.

The bobbin stocker 11 is disposed at an end of the bobbin supplying device 2. The bobbin storage device 11 is detachably provided with a bobbin box 11 a. The bobbin box 11a is a container which is open at the upper side and can accommodate therein a plurality of yarn supplying bobbins 7 around which yarn is wound. The bobbin stocker 11 can rotate the bobbin box 11a so that the open portion thereof faces obliquely downward by driving the hydraulic cylinder 18 as an actuator. As a result, the yarn supplying bobbin 7 accommodated in the bobbin case 11a can be loaded into the conveyance path 21.

The conveyance path 21 is a linear path for conveying the plurality of yarn supplying bobbins 7 supplied from the bobbin box 11 a. The conveyance path 21 is disposed adjacent to the bobbin stocker 11. The bobbin conveying device 12 includes a stacking unit 22 on which a road surface 21a of the conveying path 21 is formed, and a vibration motor 23 for vibrating the stacking unit 22. The vibration motor 23 vibrates the stacking portion 22, thereby conveying the plurality of yarn supplying bobbins 7 stacked on the conveying path 21 in a direction separating from the bobbin stocker 11.

The road surface 21a of the conveyance path 21 corresponds to a road surface of a movement path of the yarn supplying bobbin 7 and is arranged substantially along the horizontal direction. In order to align the directions of the yarn supplying bobbins 7, the road surface 21a is formed in a wavy shape as shown in fig. 3. However, the road surface 21a may be formed as a flat surface, for example.

Hereinafter, for convenience of explanation, an upstream side in a moving direction of the yarn supplying bobbin 7 of the conveying path 21 (a direction indicated by an arrow a1 in fig. 2) may be referred to as a rear side of the bobbin supplying device 2, and a downstream side may be referred to as a front side of the bobbin supplying device 2. Further, a direction perpendicular to both the moving direction (front-back direction) and the vertical direction of the yarn supplying bobbin 7 may be referred to as a left-right direction. The left-right direction can be also referred to as the width direction of the conveyance path 21. These directions are shown in fig. 2, 3, and the like.

The discharge guide 41 is connected to a downstream end (tip end) of the conveyance path 21. The discharge guide 41 guides the yarn supplying bobbin 7 conveyed along the conveying path 21 to discharge the yarn supplying bobbin 7 to an appropriate position of the bobbin alignment device 15. The detailed structure of the discharge guide 41 will be described later.

The conveyance path 21 and the discharge guide 41 form a part of the movement path 10 from the bobbin box 11a to the yarn supplying bobbin 7 of the bobbin processing device 3. Normally, after being supplied from the bobbin box 11a to the bobbin conveying device 12, the plurality of yarn supplying bobbins 7 are stacked on top of each other and conveyed on the conveying path 21 in a mountain-like state. Therefore, for example, when the yarn supplying bobbin 7 moves on the road surface 21a of the conveying path 21 or the pile of the yarn supplying bobbin 7 is broken as in a mountain state, friction is generated on the surface portion of the yarn supplying bobbin 7. As a result, the yarn may be unwound from the surface portion of the yarn supplying bobbin 7, and the yarn may be drawn out long with the conveyance of the yarn supplying bobbin 7.

Hereinafter, the yarn drawn out from the yarn supplying bobbin 7 may be referred to as an unwound yarn 25. The unwound yarn 25 may occur not only during conveyance in the conveyance path 21 but also at a stage when the yarn supplying bobbin 7 is discharged from the bobbin box 11a or at a stage before the discharge. When the unwound yarn 25 is wound between the plurality of yarn supplying bobbins 7, 2 or more yarn supplying bobbins 7 are wound, and thus the yarn cannot be smoothly conveyed.

The upstream cutting device 13 cuts the unwound yarn 25 extending from the yarn supplying bobbin 7. The upstream cutting device 13 is disposed near a downstream end of the conveyance path 21 in the conveyance direction (the moving direction of the yarn supplying bobbin 7 in the conveyance path 21). The detailed configuration of the upstream side cutter 13 will be described later.

The downstream side cutting device 14 cuts the unwound yarn 25 extending from the yarn supplying bobbin 7, similarly to the upstream side cutting device 13. The downstream cutting device 14 is disposed downstream of the upstream cutting device 13, specifically, disposed on the discharge guide 41. In the moving path 10 of the yarn supplying bobbin 7, the downstream side cutting device 14 is disposed between the upstream side cutting device 13 and the bobbin arraying device 15. The detailed configuration of the downstream side cutting device 14 will be described later.

The bobbin alignment device 15 aligns the plurality of yarn supplying bobbins 7 in 1 line, and conveys the bobbins one by one to the downstream side in the conveying direction (the bobbin processing device 3 side). The bobbin alignment device 15 is disposed downstream of the bobbin conveying device 12 in the movement path 10 of the yarn supplying bobbin 7. As shown in fig. 2, the bobbin arraying device 15 includes a housing 91, a bowl (stock storage) 92, and a vibration solenoid 93. The bowl portion 92 is an upwardly open container and can accommodate the yarn supplying bobbin 7 therein. The bowl 92 is disposed inside the casing 91 and below the downstream side cutting device 14. A spiral passage 94 through which the yarn supplying bobbin 7 passes in a substantially horizontal posture is formed in an inner wall of the bowl portion 92. The vibration solenoid 93 is coupled to the bowl 92. The vibration solenoid 93 vibrates the bowl portion 92, thereby enabling the yarn supplying bobbin 7 to be conveyed along the passage 94.

The control device 16 is configured as a known computer including a CPU, a ROM, a RAM, and the like. The control device 16 controls the hydraulic cylinder 18, the upstream-side cutting device 13, the downstream-side cutting device 14, the vibration motor 23, the vibration solenoid 93, and the like.

Next, the upstream cutting device 13 will be described mainly with reference to fig. 4. Fig. 4 is a diagram showing the configurations of the upstream side cutting device 13 and the downstream side cutting device 14 provided in the bobbin conveying device 12. Fig. 5 is a block diagram showing a configuration for controlling the upstream side cutting device 13 and the downstream side cutting device 14.

The upstream cutting device 13 adjusts the amount of the yarn supplying bobbins 7 conveyed along the conveying path 21 to be conveyed to the downstream side in the conveying direction, and cuts the unwound yarn 25 extending from the yarn supplying bobbins 7. As shown in fig. 4, the upstream cutting device 13 includes a gate portion (regulating portion) 31, an upstream cutting portion (1 st cutting portion) 36, and an elevating mechanism 73.

The gate portion 31 is disposed between the downstream end of the conveying path 21 and the upstream end of the discharge guide 41. As shown in fig. 2, the gate portion 31 is provided so as to be movable in the up-down direction. Specifically, the door 31 moves in the vertical direction with respect to the road surface 21a of the conveyance path 21. This direction may be referred to as a direction perpendicular to the conveying direction (the direction of arrow a 1) of the yarn supplying bobbin 7 of the bobbin conveying device 12, and may be referred to as a direction in which the height of the gate portion 31 changes. The direction in which the door portion 31 moves is substantially perpendicular with respect to the road surface 21 a.

When the gate 31 is raised, the upper end of the gate 31 is positioned above the road surface 21a of the conveyance path 21, and therefore a step protruding upward is formed with respect to the road surface 21 a. This step makes it possible to block the yarn supplying bobbin 7 on the conveyance path 21 so as to prevent the yarn supplying bobbin from flowing into the bobbin alignment device 15. By this restriction, the plurality of yarn supplying bobbins 7 can be temporarily retained at the end portion on the downstream side of the conveying path 21, and a large number of yarn supplying bobbins 7 can be prevented from flowing into the bobbin alignment device 15 at once. When the gate 31 is lowered, the upper end of the gate 31 is the same as or below the road surface 21a of the conveyance path 21, and thus the step is eliminated. In the following description, a position where a step that the yarn supplying bobbin 7 must pass over to pass through is formed on the road surface 21a may be referred to as a limit position (1 st position) of the gate portion 31, and a position where no step is formed may be referred to as an allowable position (2 nd position).

The door portion 31 is formed by, for example, folding a metal plate. The door 31 has a1 st vertically movable member 71 facing the downstream end of the conveying path 21 and a2 nd vertically movable member 72 disposed downstream (on the front side) of the 1 st vertically movable member 71. The 1 st elevation member 71 is formed in a substantially rectangular shape having a wide width so as to be able to close the downstream end of the conveyance path 21 over the entire width. Extension portions extending to both sides in the width direction of the conveyance path 21 are formed in the 1 st elevation member 71, and the extension portion on one side is connected to the elevation mechanism 73. The 2 nd elevating member 72 is fixed to the 1 st elevating member 71. A space for providing the upstream side cutting portion 36 and the like is formed between the 1 st elevating member 71 and the 2 nd elevating member 72. The upper ends of the 1 st vertically movable member 71 and the 2 nd vertically movable member 72 are substantially aligned in the vertical direction. The shape of the upper end of each of the 2 nd vertically movable members 72 corresponds to the shape of the upper end of the 1 st vertically movable member 71.

As shown in fig. 4, a rectangular cutout is formed in an end portion of the discharge guide 41 on the side close to the conveyance path 21. The discharge guide 41 is attached to a fixed frame, not shown, of the bobbin conveying device 12, and the elevation port 32 is formed in the cut portion. The lifting port 32 is disposed near the downstream end of the conveyance path 21 and extends in the width direction of the conveyance path 21. The door portion 31 (the 1 st lifting member 71 and the 2 nd lifting member 72) is inserted into the lifting opening 32.

The lifting mechanism 73 can move the door 31 in the vertical direction. The lifting mechanism 73 has a cylinder 81. The cylinder 81 has a piston rod 82 disposed to be movable substantially in the vertical direction. The front end of the piston rod 82 is connected to an appropriate position of the 1 st elevation member 71 provided in the door portion 31. The air cylinder 81 is connected to a compressed air source not shown. When compressed air is supplied to the cylinder 81 by this compressed air source through a pipe not shown, the cylinder 81 expands. When the compressed air is discharged from the cylinder 81, the cylinder 81 contracts. The supply and discharge of the compressed air can be switched by a solenoid valve 66 shown in fig. 5. The solenoid valve 66 is controlled by the control device 16. In order to avoid contact with the yarn supplying bobbin 7, the cylinder 81 is covered with a cover 83 shown in fig. 4.

The cylinder 81 expands and contracts to move the 1 st and 2 nd elevating members 71 and 72 (i.e., the door 31) in the vertical direction. The lower end of the lift stroke corresponds to the above-mentioned allowable position, and the position near the upper end corresponds to the limit position. The positions of the lower end and the upper end of the lifting stroke can be set arbitrarily.

The lifting mechanism 73 periodically lifts and lowers the door portion 31, and thus can alternately repeat a state in which the yarn supplying bobbin 7 of the conveying path 21 is easily conveyed to the downstream side and a state in which the yarn supplying bobbin 7 of the conveying path 21 is hardly conveyed to the downstream side. That is, the conveying tendency of the yarn supplying bobbin 7 of the conveying path 21 can be changed. Therefore, even if the plurality of yarn supplying bobbins 7 are entangled by the winding of the unwound yarn 25, the yarn supplying bobbin 7 which is closed by the door portion 31 and the yarn supplying bobbin 7 which is not closed and is transported downstream can be separated. Further, it is possible to promote the yarn 25 to be tensed and unwound between the yarn supplying bobbin 7 that is jammed and the yarn supplying bobbin 7 that is not jammed.

As shown in fig. 4, in the door portion 31, a plurality of upstream-side guide grooves (1 st guide groove) 37 extending downward (inward) from the upper end (edge) are formed in the upper portions of the 1 st vertically movable member 71 and the 2 nd vertically movable member 72, respectively. The upstream guide grooves 37 are arranged in parallel at appropriate intervals in the left-right direction. Each upstream guide groove 37 is arranged so as to open upward. The upstream guide groove 37 is formed in a curved tapered shape such that the width in the left-right direction becomes narrower from the upper side toward the lower side.

This allows the unwound yarn 25 passing through the upper side of the gate portion 31 to be smoothly introduced into the upstream guide groove 37 as the gate portion 31 rises or as the unwound yarn 25 is tensioned. Further, the shape of the upstream-side guide groove 37 is not particularly limited. For example, the upstream guide groove 37 may be formed in a straight tapered shape or may be formed in a non-tapered shape. The number of the upstream guide grooves 37 is arbitrary.

As shown in fig. 2 and 4, the upstream side cutting portion 36 is disposed inside the gate portion 31 (between the 1 st elevation member 71 and the 2 nd elevation member 72). The upstream cutting unit 36 includes a scissors-shaped cutter 38 and a drive mechanism 39 for operating the cutter 38.

A plurality of cutters 38 are disposed corresponding to the upstream guide grooves 37. Each cutter 38 is disposed near the lower end of the upstream guide groove 37. The cutter 38 includes a fixed blade and a movable blade.

The drive mechanism 39 has a rack 55 and a plurality of pinions 56 meshing with the rack 55. The plurality of pinions 56 are coupled to the movable blades of the cutter 38. The drive mechanism 39 further includes an air cylinder 53 shown in fig. 5. The rack 55 is mounted on the cylinder 53. The supply and discharge of compressed air to and from the cylinder 53 can be switched by the solenoid valve 67. The operation of the solenoid valve 67 is controlled by the control device 16.

When the air cylinder 53 is operated, the movable blade of each cutter 38 is driven via the rack 55 and the pinion 56 to close relative to the fixed blade. By this cutting operation, the unwound yarn 25 entering the lower portion of the upstream guide groove 37 from above is cut.

In the present embodiment, the upstream cutting portion 36 is attached to the door portion 31 and moves integrally with the door portion 31. That is, when the gate 31 rises, the upstream cutting portion 36 rises correspondingly, and when the gate 31 falls, the upstream cutting portion 36 falls correspondingly. In 1 cycle of the upward and downward movement of the gate portion 31, the timing at which the movable blade of the cutter 38 is closed with respect to the fixed blade (hereinafter, the timing may be referred to as the cutting timing of the upstream cutting portion 36) occurs a plurality of times. At least 1 of the plurality of cutting timings coincides with a timing at which the gate portion 31 is at the highest position (1 st position) that is the highest elevation. Thus, the cutting operation of the cutter 38 is performed in a state where the unwound yarn 25 is less slack, and therefore the unwound yarn 25 can be reliably cut. However, the cutting operation of the cutter 38 may be performed at any timing.

The controller 16 controls the lifting mechanism 73 so as to repeat the lifting of the door 31 in a state where the conveying path 21 of the bobbin conveying device 12 is driven and the bobbin arraying device 15 is driven. When one of the conveyance path 21 and the bobbin arraying device 15 is not driven, the control device 16 controls not to raise and lower the lifting mechanism 73. The controller 16 controls the upstream cutting unit 36 to perform the cutting operation in conjunction with the up-and-down operation of the door unit 31. Only when the necessity of cutting the unwound yarn 25 is high, the gate portion 31 and the upstream-side cutting portion 36 are operated, thereby achieving energy saving.

Next, the downstream side cutting device 14 will be described with reference to fig. 3 and 4.

The downstream side cutting device 14 guides the plurality of yarn supplying bobbins 7 conveyed by the bobbin conveying device 12 to the downstream side in the conveying direction (the bobbin alignment device 15 side), and cuts the unwound yarn 25 extending from the yarn supplying bobbin 7. The downstream cutting device 14 has a downstream cutting section (2 nd cutting section) 46 for cutting the unwound yarn 25.

The discharge guide 41 is formed by bending a metal plate, for example. The discharge guide 41 is disposed above the bowl portion 92 of the bobbin alignment device 15. The discharge guide 41 includes a bottom portion 43 and 2 side portions 44. The bottom portion 43 is formed with a guide path 42 extending forward and downward from the conveyance path 21 of the bobbin conveyance device 12. The 2 side portions 44 extend upward from the left and right ends of the bottom portion 43, respectively.

The guide path 42 constitutes a part of the moving path 10, and is inclined so as to be positioned downward as it goes forward. The yarn supplying bobbin 7 conveyed to the discharge guide 41 slides along the guide path 42 by its own weight, and falls from the end of the guide path 42. The plurality of yarn supplying bobbins 7 intersect the vertical direction along the direction in which the guide path 42 is guided (the direction of arrow a2 in fig. 2, hereinafter sometimes referred to as the guide direction). The guide passage 42 may be planar or curved.

A plurality of downstream side guide grooves (2 nd guide grooves) 47 are formed in the discharge guide 41. The downstream guide grooves 47 are arranged in parallel with appropriate intervals in the width direction (left-right direction) of the discharge guide 41. Each downstream guide groove 47 is arranged to open obliquely downward with its front side facing downward. The downstream guide groove 47 is formed to be elongated from the downstream end of the bottom portion 43 toward the upstream side.

The downstream guide groove 47 is formed in a curved tapered shape in a plan view such that a width in the left-right direction becomes narrower from the downstream side to the upstream side in the direction in which the yarn supplying bobbin 7 moves. Further, the shape of the downstream side guide groove 47 is not particularly limited. For example, the downstream guide groove 47 may be formed in a straight-line tapered shape or may be formed in a non-tapered shape. The number of the downstream guide grooves 47 is arbitrary.

The side portion 44 of the discharge guide 41 prevents the yarn supplying bobbin 7 moving on the guide path 42 from falling off the side of the guide path 42. The 2 side portions 44 are arranged in a tapered shape such that the interval becomes narrower toward the downstream side. Thereby, the yarn supplying bobbin 7 can be guided by the side portion 44 so as to be discharged to the center portion of the bowl portion 92 in a plan view.

As shown in fig. 4, the downstream cutting portion 46 is disposed below the bottom portion 43 of the discharge guide 41. The downstream cutting portion 46 includes a scissor-like cutter 48 and a drive mechanism 49 for operating the cutter 48.

A plurality of cutters 48 are disposed corresponding to the downstream guide grooves 47. Each cutter 48 is disposed below an upstream end of the downstream guide groove 47 in the guide direction, and can be positioned in the downstream guide groove 47 in a plan view. The cutter 48 includes a fixed blade and a movable blade.

The driving mechanism 49 has substantially the same configuration as the driving mechanism 39 of the upstream cutting unit 36. To explain this simply, the movable blade of the cutter 48 is driven by the rack 57 and the pinion 58. The drive mechanism 49 includes an air cylinder 54 shown in fig. 5 in addition to the rack 57 and the pinion 58. The rack 57 is driven by the air cylinder 54, whereby the movable blade of the cutter 48 is closed with respect to the fixed blade. As a result, the cutter 48 cuts the unwound yarn 25 that enters the upstream end of the downstream guide groove 47 in the guide direction. The driving of the cylinder 54 is controlled by the control device 16 via the solenoid valve 67.

As shown in fig. 3 and 4, a suction port 51 extending in the width direction (left-right direction) of the guide path 42 is formed in the bottom portion 43 of the discharge guide 41. The suction port 51 is disposed at a middle portion of the discharge guide 41 in the direction in which the yarn supplying bobbin 7 moves. Specifically, the suction port 51 is disposed along the lifting port 32 in the vicinity of the downstream side of the lifting port 32 where the door portion 31 is disposed. The suction port 51 penetrates the bottom portion 43 in the vertical direction. The suction port 51 is disposed downstream of the gate portion 31 and upstream of the downstream guide groove 47 in the direction in which the yarn supplying bobbin 7 moves.

As shown in fig. 3, the automatic winding system 1 includes a blower (suction source) 60. The suction port 51 of the discharge guide 41 is connected to the blower 60 via an appropriate pipe 61. This allows the unwound yarn 25 extending from the yarn supplying bobbin 7 to be sucked from the suction port 51.

An on-off valve 68 shown in fig. 5 is disposed between the suction port 51 and the blower 60. The on-off valve 68 can switch between a state in which negative pressure is applied to the suction port 51 and a state in which negative pressure is not applied. The operation of the opening/closing valve 68 is controlled by the control device 16. The suction at the suction port 51 is performed at least when the gate portion 31 and the upstream cutting portion 36 of the upstream cutting device 13 are operated, or when the downstream cutting portion 46 of the downstream cutting device 14 is operated.

Next, the cutting operation of the unwound yarn 25 by the upstream cutting device 13 and the downstream cutting device 14 will be described with reference to fig. 6 to 9. Fig. 6 and 7 sequentially show how the unwound yarn 25 is cut when a plurality of yarn supplying bobbins 7 are formed into a block shape. Fig. 8 and 9 sequentially show how the unwound yarn 25 extending from the individual yarn supplying bobbins 7 is cut. In the bobbin conveying device 12, a plurality of yarn supplying bobbins 7 are actually conveyed. However, in these drawings, in order to avoid complication, the yarn supplying bobbins 7 other than the yarn supplying bobbin 7 of interest are omitted.

The yarn supplying bobbin 7 supplied to the bobbin conveying device 12 by the bobbin loading device 11 is conveyed to the end portion on the downstream side in the conveying direction of the conveying path 21. When the unwound yarn 25 of a certain yarn supplying bobbin 7 and the unwound yarn 25 of another yarn supplying bobbin 7 are intertwined with each other during conveyance (moving) of the plurality of yarn supplying bobbins 7, a block-shaped yarn group is formed as shown in fig. 6 (a).

When the block-shaped bobbin set approaches the upstream side cutter 13, the gate portion 31 alternately repeats ascending and descending, and contacts the yarn supplying bobbin 7 to push it upward. Thereby, as shown in the upper side of fig. 6 (b), the block-shaped bobbin set is unwound. Further, the difficulty of passing the yarn supplying bobbin 7 is periodically changed by repetition of the lifting operation of the gate portion 31. Therefore, it is possible to facilitate the closing of some of the yarn supplying bobbins 7 constituting the block-shaped yarn group on the upstream side of the gate portion 31 and the passing of the remaining yarn supplying bobbins 7 through the gate portion 31.

As shown in fig. 6 (b), a state is considered in which one yarn supplying bobbin 7 constituting a block-shaped bobbin group passes through the gate portion 31 and reaches the discharge guide 41, and the remaining yarn supplying bobbins 7 are blocked by the gate portion 31. In this state, the unwound yarn 25 is provided between the yarn supplying bobbins 7 so as to straddle the gate portion 31. At this time, the position where the unwound yarn 25 passes above the gate portion 31 varies. However, the unwound yarn 25 moves so as to enter any one of the upstream guide grooves 37 as indicated by the two-dot chain line in fig. 6 (b) in association with the raising operation of pulling the unwound yarn 25 and the gate portion 31 by the yarn supplying bobbin 7 slipping down along the guide path 42. Since the upstream guide groove 37 is formed in a curved tapered shape, the introduction of the unwound yarn 25 into the upstream guide groove 37 is smooth. The unwound yarn 25 entering the upstream guide groove 37 is cut by the cutter 38 of the upstream cutting section 36. This can break the yarn supplying bobbins 7 constituting the block-shaped yarn group.

When the yarn supplying bobbin 7 slides down on the discharge guide 41, the suction port 51 can catch the unwound yarn 25 extending from the yarn supplying bobbin 7. The unwound yarn 25 is wound so as to connect the yarn supplying bobbin 7 closed by the door portion 31 and the yarn supplying bobbin 7 which has passed through the door portion 31 and slid down. When the unwound yarn 25 is cut by the upstream-side cutter 13, the unwound yarn 25 that has become free may be caught by the suction port 51. Fig. 7 (a) shows the state at the moment when the unwound yarn 25 is caught by the suction port 51.

After the unwound yarn 25 is caught by the suction port 51, the unwound yarn 25 is stretched so as to straddle the downstream end of the discharge guide 41 between the suction port 51 and the yarn supplying bobbin 7 dropped from the discharge guide 41. At this time, the position of the unwound yarn 25 passing through the downstream end of the discharge guide 41 varies. However, the yarn supplying bobbin 7 pulls the unwound yarn 25 by its own weight or the unwound yarn 25 is pulled by the air flow of the suction port 51, whereby the unwound yarn 25 moves to enter any one of the downstream guide grooves 47, as shown in fig. 7 (b). Since the downstream-side guide groove 47 is formed in a curved tapered shape, the introduction of the unwound yarn 25 into the downstream-side guide groove 47 becomes smooth. The unwound yarn 25 that has entered the downstream guide groove 47 is cut by the downstream cutting section 46. The leading end portion of the cut unwound yarn 25 is sucked and removed through the suction port 51.

However, as shown in fig. 8 (a), when the unwound yarn 25 extends long from the individual yarn supplying bobbin 7 positioned on the conveyance path 21, it is also conceivable that the unwound yarn 25 hangs down toward the discharge guide 41 and is caught by the suction port 51. In this case, the unwound yarn 25 can be caused to enter the upstream guide groove 37 as shown in fig. 8 (b) by the suction of the unwound yarn 25 at the suction port 51 and the raising of the gate portion 31, and can be cut by the upstream cutting portion 36. The leading end portion of the cut unwound yarn 25 is sucked into the suction port 51 and removed.

However, there may be a case where the unwound yarn 25 cannot be introduced into the upstream guide groove 37 due to other reasons such as the yarn supplying bobbin 7 becoming a hindrance, and the unwound yarn 25 passes through the gate portion 31 without being cut by the upstream cutting portion 36. In this case, the unwound yarn 25 between the suction port 51 and the falling yarn supplying bobbin 7 can be fed into the downstream guide groove 47 as shown in fig. 9 and cut by the downstream cutting portion 46. As described above, in the present embodiment, since the chance of cutting the unwound yarn 25 can be substantially secured 2 times, the entire unwound yarn 25 generated in the yarn supplying bobbin 7 can be made shorter. As a result, the yarn supplying bobbin 7 can be smoothly conveyed by reducing the number of windings of the unwound yarn 25 in the yarn supplying bobbin 7 conveyed from the bobbin arraying device 15 to the downstream side.

In this way, in the present embodiment, the gate portion 31 is configured to move in the direction orthogonal to the road surface 21 a. Therefore, as compared with the structure in which the swing member on which the plurality of yarn supplying bobbins are mounted swings as in japanese patent laid-open No. 2012-184074, the size of the members such as the door portion 31 can be reduced, and the size reduction of the bobbin conveying device 12 is facilitated.

Further, in the present embodiment, the yarn supplying bobbin is not strictly divided by a predetermined amount and conveyed as in japanese patent laid-open No. 2012-184074, but conveyed while periodically giving strength to the conveyance tendency of the yarn supplying bobbin 7 by the gate portion 31. As described above, the door 31 is small. Therefore, it is possible to more favorably create a state in which only a part of the yarn supplying bobbins 7 in a block shape passes through the downstream side of the gate portion 31 and the remainder remains on the upstream side of the gate portion 31. As a result, the unwound yarn 25 can be easily cut by the upstream cutting section 36 with the gate section 31 as a boundary, and the unwinding yarn 25 can be prevented from being entangled.

As described above, the upstream side cutting device 13 according to the present embodiment is provided in the middle of the moving path 10 in which the plurality of yarn supplying bobbins 7 around which the yarn is wound move. The upstream cutting device 13 includes a gate portion 31 and an upstream cutting portion 36. The gate portion 31 is provided movably in the vertical direction intersecting the moving direction of the yarn supplying bobbin 7 with respect to the road surface 21a of the moving path 10, and by this movement, the passage of the yarn supplying bobbin 7 in the moving path 10 can be restricted. The upstream cutting portion 36 cuts the unwound yarn 25 unwound and extended from the yarn supplying bobbin 7 at the gate portion 31 as a boundary.

Accordingly, the gate portion 31 moves relative to the yarn supplying bobbin group in which the plurality of yarn supplying bobbins 7 are blocked due to the winding of the unwound yarn 25, and thus, it is possible to promote a state in which some of the plurality of yarn supplying bobbins 7 pass and the remainder does not pass, in other words, a state in which the unwound yarn 25 passes over the gate portion 31. Then, the unwound yarn 25 can be easily cut by the upstream cutting section 36. As a result, the unwinding yarns 25 are not wound around each other, and the subsequent operation of the yarn supplying bobbin 7 can be facilitated.

In the upstream cutting device 13 of the present embodiment, the upstream cutting unit 36 moves integrally with the door unit 31.

This allows the upstream cutting portion 36 to easily cut the unwound yarn 25 that has contacted the gate portion 31 and acted thereon, while moving the gate portion 31.

In the upstream side cutting device 13 of the present embodiment, the gate portion 31 alternately repeats movement to a restriction position that restricts the passage of the yarn supplying bobbin 7 and movement to an allowable position that does not restrict the passage of the yarn supplying bobbin 7.

This allows the yarn supplying bobbin 7 to easily pass through the gate 31 and to pass through the gate with difficulty repeatedly, and thus the state in which the unwound yarn 25 passes over the gate 31 can be reliably promoted.

In the upstream side cutting device 13 of the present embodiment, the gate portion 31 is movable along a linear path intersecting with the moving direction of the yarn supplying bobbin 7.

With this configuration, the restriction of the passage of the yarn supplying bobbin 7 can be changed with a simple configuration.

In the upstream cutting device 13 of the present embodiment, the gate 31 moves so as to change the step between the upper end of the gate 31 and the road surface 21 a.

With this configuration, the passing ease of the yarn supplying bobbin 7 can be changed with a simple configuration.

In the upstream cutting device 13 of the present embodiment, the upstream cutting unit 36 repeats the cutting operation. The timing of the cutting operation includes the timing when the gate portion 31 is located at the highest position in the movement range.

Thus, the upstream cutting section 36 performs the cutting operation with less slack of the unwound yarn 25, and thus can reliably cut the unwound yarn 25.

The bobbin conveying device 12 of the present embodiment includes an upstream side cutting device 13 and a conveying path 21. The conveyance path 21 constitutes a part of the movement path 10 through which the yarn supplying bobbin 7 moves from the bobbin box 11a to the bobbin handling device 3. The gate portion 31 of the upstream side cutting device 13 is disposed downstream of the conveying path 21 in the moving direction of the yarn supplying bobbin 7 of the conveying path 21.

This enables the yarn supplying bobbin 7 to be conveyed while effectively eliminating the unwinding yarn 25 from being wound in the bobbin conveying device 12.

The bobbin conveying device 12 of the present embodiment includes a downstream cutting portion 46 that cuts the unwound yarn 25 unwound and extended from the yarn supplying bobbin 7. The downstream side cutting portion 46 is disposed on the downstream side of the gate portion 31 in the moving path 10.

This makes it possible to cut the unwound yarn 25 at a plurality of occasions, and thus reliably eliminate the entanglement of the unwound yarn 25.

In the bobbin conveying device 12 of the present embodiment, a suction port 51 is formed on the downstream side of the gate portion 31 and on the upstream side of the downstream side cutting portion 46 in the moving path 10. A blower 60 for supplying negative pressure is connected to the suction port 51.

Thus, the unwound yarn 25 can be held by the suction port 51 to cut the upstream cutting section 36 or the downstream cutting section 46.

In the bobbin conveying device 12 of the present embodiment, the negative pressure is supplied when the door portion 31 is lifted and lowered with respect to the suction port 51.

When the door portion 31, which is easily moved by pressing the yarn supplying bobbin 7 and the unwound yarn 25, moves, the suction port 51 performs suction, and thus the unwound yarn 25 can be efficiently caught by the suction port 51.

In the bobbin conveying device 12 of the present embodiment, the upstream guide groove 37 capable of guiding the unwound yarn 25 is formed in the door portion 31. The upstream-side guide groove 37 is provided with an upstream-side cutting portion 36 for cutting the unwound yarn 25 entering the upstream-side guide groove 37.

Thus, the position of the unwound yarn 25 can be stabilized by the upstream guide groove 37, and the yarn can be cut by the upstream cutting section 36.

In the bobbin conveying device 12 of the present embodiment, the height of the door portion 31 changes as it moves. In a state where the gate portion 31 is located at the highest position in the movement range, the end of the upstream guide groove 37 on the opposite side to the open side is higher than the road surface 21 a.

This allows the unwinding yarn 25 entering the upstream guide groove 37 to be cut by the upstream cutting unit 36 while being kept in a tensioned state. Therefore, the stability and reliability of cutting can be improved.

The bobbin conveying device 12 of the present embodiment includes a discharge guide 41 that guides the movement of the yarn supplying bobbin 7 on the downstream side of the door portion 31. A downstream guide groove 47 capable of guiding the unwound yarn 25 is formed in the discharge guide 41. The unwound yarn 25 that has entered the downstream guide groove 47 is cut by a downstream cutting portion 46 that is arranged downstream of the gate portion 31 in the moving path 10.

Thus, the position of the unwound yarn 25 can be stabilized by the downstream guide groove 47, and the yarn can be cut by the downstream cutting section 46.

In the bobbin conveying device 12 of the present embodiment, the downstream cutting portion 46 is provided in the downstream guide groove 47.

This makes it possible to reduce the size of the discharge guide 41.

In the bobbin conveying device 12 of the present embodiment, when viewed in a direction orthogonal to the moving direction of the yarn supplying bobbin 7 of the conveying path 21 and with reference to a horizontal line as shown in fig. 2, the direction in which the upstream side guide groove 37 formed in the gate portion 31 extends is different from the direction in which the downstream side guide groove 47 formed in the discharge guide 41 extends.

This can increase the probability that the unwound yarn 25 enters any of the grooves and is cut.

In the bobbin conveying device 12 of the present embodiment, as shown in fig. 2, the upstream guide groove 37 formed in the gate portion 31 is vertically opened upward when viewed in a direction orthogonal to the moving direction of the yarn supplying bobbin 7 of the conveying path 21 with reference to a horizontal line. The downstream-side guide groove 47 formed in the discharge guide 41 opens obliquely downward when viewed in the same orientation as described above.

Thereby, the unwound yarn 25 easily enters each of the upstream-side guide groove 37 and the downstream-side guide groove 47. As a result, the cutting can be reliably performed.

The bobbin supplying device 2 of the present embodiment includes a bobbin conveying device 12 and a bobbin arraying device 15. The bobbin arraying device 15 is disposed downstream of the bobbin conveying device 12.

This eliminates the problem that the plurality of yarn supplying bobbins 7 are piled up and become a lump due to the winding of the unwound yarn 25 and the unwound yarn 25 extends long from the yarn supplying bobbin 7, and the yarn supplying bobbins 7 are smoothly supplied.

In the bobbin supplying device 2 according to the present embodiment, the bobbin alignment device 15 is a vibrating feeder.

This enables the yarn supplying bobbin 7 to be smoothly conveyed by the vibrating feeder.

The bobbin supplying device 2 of the present embodiment includes a control device 16. In the bobbin conveying device 12, the controller 16 moves the gate portion 31 when the conveying path 21 is driven to convey the yarn supplying bobbin 7 and the bobbin arraying device 15 is driven to array the yarn supplying bobbin 7.

Thus, the door portion 31 can be operated when the bobbin conveying device 12 and the bobbin arraying device 15 actually convey the yarn supplying bobbin 7.

While the preferred embodiments of the present invention have been described above, the above-described configuration can be modified as follows, for example.

In the above-described embodiment, the upstream cutting device 13 is disposed adjacent to the downstream cutting device 14. However, the upstream cutting device 13 may be disposed apart from the downstream cutting device 14 to some extent in the conveying direction. In this case, a bobbin conveying mechanism (e.g., a vibrating conveyor) having an appropriate configuration may be provided between the upstream cutting device 13 and the downstream cutting device 14 as necessary.

In the above-described embodiment, the upstream cutting portion 36 of the upstream cutting device 13 is configured to be lifted and lowered integrally with the gate portion 31, but the upstream cutting portion 36 may be lifted and lowered not integrally with the gate portion 31. For example, the upstream cutting unit 36 may be raised and lowered at a timing not synchronized with the door unit 31, or may be fixed.

In the above embodiment, the upstream cutting unit 36 of the upstream cutting device 13 includes the plurality of cutters 38. Instead of the plurality of cutters 38, one cutter extending along the gate portion 31 may be provided, or one cutter reciprocating along the gate portion 31 may be provided. The same applies to the downstream cutting portion 46 of the downstream cutting device 14.

The gate portion 31 may be disposed in a posture inclined with respect to the vertical direction. In this case, as shown in fig. 2, the upstream guide groove 37 is opened obliquely upward with the downstream side being upward when viewed in a direction orthogonal to the moving direction of the yarn supplying bobbin 7 of the carrying path 21 with reference to a horizontal line.

The downstream side guide groove 47 of the discharge guide 41 may be formed to be horizontally open, instead of being obliquely downward with the downstream side being downward, when viewed in a direction orthogonal to the moving direction of the yarn supplying bobbin 7 of the conveyance path 21 with reference to a horizontal line.

The door 31 may be reciprocated, for example, obliquely, instead of the vertical direction. The moving direction of the gate 31 may be inclined with respect to the road surface 21a of the conveying path 21, instead of being perpendicular to the road surface 21a of the conveying path 21. That is, the movement may be linear in a direction including the vertical direction.

Even at the lower end of the lifting stroke of the door portion 31, a small step difference can be formed between the door portion 31 and the road surface 21 a. In other words, even if the passage of the yarn supplying bobbin 7 is restricted at the allowable position, the restriction may be reduced as compared with the restricted position.

The lifting operation of the door 31 and the cutting operation of the cutters 38 and 48 are not limited to the air cylinders, and may be realized by an appropriate actuator such as a motor or a solenoid.

The cutters 38, 48 may be other than scissors, for example, to cut the unwound yarn 25 with a rotating circular blade. The upstream side cutting portion 36 and the downstream side cutting portion 46 may cut the unwound yarn 25, for example, by pinching and shredding, without using a blade.

The bobbin alignment device 15 is not limited to the vibration feeder. For example, a bobbin alignment device configured to individually separate bobbins while conveying the yarn supplying bobbins 7 one by one in the vertical direction by an elevating conveyor can be used.

The movement path 10 is not limited to conveyance in the horizontal direction, and may be inclined with respect to the horizontal direction. Even in this case, the gate portion 31 may be provided so that the passage of the yarn supplying bobbin 7 can be restricted by the advance and retreat of the gate portion 31. In other words, the gate portions 31 may intersect perpendicularly or obliquely with respect to the moving path 10.

In view of the above teachings, it will be apparent that the present invention is capable of many modifications and variations. Therefore, it is to be understood that the present invention can be practiced otherwise than as specifically described in the claims.