JP2012057272A - Spinning machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow an operator to access a spinning unit of a spinning machine having a step.SOLUTION: A spinning machine 1 as a spinning machine includes a plurality of spinning units 2, a package mounting part 21, a step 22, and a toe housing part 23. The plurality of spinning units 2 are arranged in a first direction, and each has a winding part 13 for winding a package 45. The package mounting part 21 is arranged in the first direction of the spinning unit 2 and on a winding part side 13 of the spinning unit 2. The step 22 is arranged in the first direction such that the package mounting part 21 is positioned between the step 22 and the plurality of spinning units 2, arranged at a position lower than the package mounting part 21, and has a step face 22a on which the operator can place his feet. The toe housing part 23 has a space allowing the operator's toes placed on the step face 22a to be housed, and is formed so as to extend below the package mounting part 21.

Description

  The present invention relates to a spinning machine, and more particularly to a spinning machine having steps.

  The spinning machine has a plurality of spinning units having a spinning unit that twists a fiber bundle to generate a spun yarn, and a winding unit that winds the spun yarn generated by the spinning unit to generate a package. . In the spinning machine having such a configuration, a spinning machine having a step that an operator uses as a step during maintenance of the spinning unit is conventionally known (for example, see Patent Document 1). The conventional step is disposed on the side surface on the side away from the spinning unit of the package placement unit on which the package is placed. The side surface is a vertical surface, and the step has a horizontal surface that is long enough to allow the operator's shoe toe to be placed from the vertical side surface.

JP 2006-298548 A

  In the conventional spinning machine, when an operator puts his / her feet on the step, the toe contacts the side surface of the package placement unit. For this reason, the operator may not be able to sufficiently approach the spinning unit. In particular, in the case of a spinning machine that handles a large package, the length of the package mounting portion increases in the radial direction of the package to be mounted. As a result, even if the operator gets on the step, it is difficult to approach the spinning unit.

  An object of the present invention is to enable an operator to access a spinning unit in a spinning machine having steps.

Hereinafter, a plurality of modes will be described as means for solving the problems. These aspects can be arbitrarily combined as necessary.
A spinning machine according to an aspect of the present invention includes a plurality of spinning units, a package placement unit, a step, and a toe storage unit. The plurality of spinning units are arranged along the first direction and have a winding unit for winding the package. The package placement unit is arranged along the first direction. The package placement unit is disposed on the yarn winding unit side of the spinning unit. The step is arranged along the first direction so that the package placement portion is positioned between the plurality of spinning units. Moreover, the step is arrange | positioned in the position lower than the height of a package mounting part. The step has a step surface on which an operator's foot can be placed. The toe storage part has a space that can store the toe of the operator's foot placed on the step surface. The toe storage part is formed so as to enter below the package placement part.
In this spinning machine, when the worker puts on the step surface of the step for maintenance or the like, the toes of the worker's feet can be stored in the toe storage portion. Since the toe storage part is formed so as to enter the lower part of the package mounting part, when the operator puts on the step, the length of the toe storage part can be accessed by the contractor.

  The spinning machine may further include a package protection unit that is disposed on a side where the step of the package placement unit is formed below and is bent in a direction away from the package. Thereby, a package protection part is provided between a package mounting part and a step. For this reason, even if the worker is placed on the step approaching the package placement portion, the package is not easily contaminated by the worker. Further, when the package is placed on the package placement unit or when the package is transported by the package placement unit, the package is protected by the package protection unit.

  The spinning machine may further include a traveling rail and a doffing cart. The traveling rail is disposed on the step along the first direction. The doffing trolley is a trolley that is provided so as to be able to travel on a traveling rail, and that carries the package from the spinning unit to the package mounting portion. Thereby, since the traveling rail is arranged on the step, even if the doffing cart is provided, the configuration of the entire spinning machine becomes compact.

  The height of the doffing cart may be lower than the height of the spinning unit. Thereby, an operator can work on the spinning unit on which the dolly cart is located.

  The package placement unit may include a package transport unit that transports the package along the first direction. Thereby, the package placed on the package placement unit can be transported in the first direction by the package transport unit. This increases the production efficiency of the spinning machine.

  The spinning machine may further include a package guide unit that guides the package on which the spun yarn is wound to the package placement unit. The package guide portion has an inclined surface that descends from the winding portion toward the package placement portion. Thereby, the package moves while rolling from the winding unit to the package placing unit. For this reason, the impact which acts on a package when mounted in a package mounting part can be reduced.

The spinning unit may further include a draft unit that drafts a sliver into a fiber bundle, and a spinning unit that spins the fiber bundle sent from the draft unit to generate a spun yarn. The draft section is arranged at the upper part of the spinning unit. The winding unit is disposed below the spinning unit so as to wind the spun yarn generated by the spinning unit into a package. The step is disposed below the winding unit in the height direction of the spinning unit.
In a conventional spinning machine in which a step is arranged at a position close to the worker passage, when the worker stands in the worker passage, the worker easily comes into contact with the package placed on the package placement portion. However, as described above, since the toe storage portion is disposed below the winding portion, even if an operator stands in the worker passage, the step does not contact the package placed on the package placement portion. In addition, the operator can approach the spinning unit.

  The spinning machine may further include a rod-like member disposed along the first direction at a distance from the plurality of spinning units on the front side of the plurality of spinning units. As a result, even if the worker approaches the spinning unit by the length of the toe storage portion, the approach of the worker is restricted by the bar-like member, and the worker does not accidentally approach the spinning unit.

  According to the present invention, the toe storage part is formed so as to enter the lower part of the package mounting part. Therefore, when the worker puts on the step, the worker can approach the spinning unit by the length of the toe storage part. become.

1 is a front view showing an overall configuration of a spinning machine according to an embodiment of the present invention. Sectional drawing of a spinning machine. The front perspective view of a spinning machine.

  Next, a spinning machine (spinning machine) according to an embodiment of the present invention will be described with reference to the drawings. In the present specification, “upstream” and “downstream” mean upstream and downstream in the traveling direction of the yarn during spinning.

(1) Overall Configuration A spinning machine 1 as a spinning machine shown in FIG. 1 includes a plurality of spinning units 2 that are a large number of weights arranged in parallel. The spinning machine 1 includes a yarn joining cart 3, a doffing cart 4, a blower box 80, a prime mover box 5, a unit frame 6, and a rod-like member 16. Further, as shown in FIG. 2, the spinning machine 1 includes a first suction duct 17, a second suction duct 18, and a third suction duct 19.

  The plurality of spinning units 2 are arranged on the unit frame 6 side by side in a first direction which is the left-right direction in FIG. Each spinning unit 2 forms a package 45 around which a spun yarn 10 having a predetermined length is wound. One unit frame 6 can be equipped with, for example, eight spindles 2. The number of spindles of the spinning unit 2 attached to one unit frame 6 is not particularly limited. One spinning machine 1 is provided with one or a plurality of unit frames 6.

(2) Spinning unit As shown in FIG. 1, each spinning unit 2 includes, in order from upstream to downstream, a draft unit 7, a spinning unit 9, a yarn slack eliminating unit 12, and a winding unit 13. It is provided as a main configuration. The draft section 7 is provided near the upper end of the unit frame 6 of the spinning machine 1. The draft section 7 extends the sliver 15 to form a fiber bundle 8. The spinning unit 9 applies a twist to the fiber bundle 8 sent from the draft unit 7 using a swirling airflow to perform air spinning. The spun yarn 10 delivered from the spinning unit 9 passes through the yarn clearer 52, and then is sent to the yarn slack eliminating unit 12 and wound by the winding unit 13 disposed at the lower portion, thereby forming a package 45. Thereby, the yarn path LP (FIG. 2) is formed in the vertical direction from the spinning unit 9 to the winding unit 13 of each spinning unit 2. The yarn clearer 52 detects an abnormal thickness of the spun yarn 10 passing through and / or presence / absence of foreign matter contained in the spun yarn 10.

  The yarn slack eliminating unit 12 applies a predetermined tension to the spun yarn 10 and pulls it out from the spun unit 9, and retains the spun yarn 10 sent out from the spun unit 9 when the yarn is spliced by the yarn splicing carriage 3. And a function of removing ten slacks. Further, the yarn slack eliminating part 12 has a buffer function that prevents the fluctuation of the tension on the winding part 13 side from being transmitted to the spinning part 9 side.

  The winding unit 13 winds up the package 45. As shown in FIG. 2, the winding unit 13 includes a cradle arm 71 that is swingably supported around a support shaft 70, and a winding drum 72. The cradle arm 71 rotatably supports the bobbin 48 for winding the spun yarn 10. The take-up drum 72 is provided on the front surface of the unit frame 6 and rotates the bobbin 48 or the package 45 at a predetermined take-up speed while contacting the outer peripheral surface.

(3) Yarn splicing cart The yarn splicing cart 3 can travel along the first direction on the first traveling rail 81 provided on the unit frame 6. The yarn joining cart 3 is configured to travel to the position of the spinning unit 2 that requires yarn joining when the yarn is cut, and to join the upper yarn on the spinning unit 9 side and the lower yarn on the winding unit 13 side. . Although only one yarn joining cart 3 is depicted in FIG. 1, the spinning machine 1 as a whole is provided with a plurality of yarn splicing carts 3. As shown in FIGS. 1 and 2, each yarn splicing cart 3 includes a cart 41, a yarn splicing device 43 attached to the cart 41, a yarn splicing suction pipe 44, a suction mouth 46, and a suction air supply. And a pipe 47 (FIG. 2).

The carriage unit 41 has two traveling wheels 41e arranged at intervals in the traveling direction at both ends in the first direction. A pair of guide rollers 41f are provided at the upper and lower portions of the carriage unit 41, respectively. The upper guide roller 41f is guided by the guide rail 41g.
The yarn joining device 43 joins the upper yarn and the lower yarn. The suction pipe 44 rotates around the horizontal axis and captures the upper yarn end in the spinning unit 9. The suction mouse 46 moves in the vertical direction and captures the lower thread end in the winding unit 13.

  The suction air supply pipe 47 opens and closes a shutter 95 provided at a position corresponding to each spinning unit 2 of a sub suction duct 17b (described later) of the first suction duct 17. As a result, suction air is supplied to the yarn splicing device 43, the suction pipe 44, and the suction mouth 46 from the auxiliary suction duct 17b.

(4) The doffing cart 4 As shown in FIGS. 1, 2 and 3, the doffing cart 4 is disposed on the front side of the spinning unit 2 so as to be able to travel along the first direction. The doffing cart 4 is a cart for carrying out the package 45 from the spinning unit 2 to the package mounting portion 21 described later. When the package 45 becomes full in the spinning unit 2, the doffing carriage 4 travels on the second traveling rail 82 to the spinning unit 2 and stops there. As shown in FIGS. 1 and 2, the doffing cart 4 has a cart casing 85. The carriage casing 85 is provided with a suction pipe 88, an empty bobbin supply member 89, and a cradle operation arm 90.

  The carriage casing 85 has two traveling wheels 85a arranged at both ends in the first direction. The traveling wheel 85a is disposed on the side of the lower surface of the carriage casing 85 away from the spinning unit 2. Therefore, the doffing cart 4 is guided to the second traveling rail 82 on the side away from the spinning unit 2. The height of the carriage casing 85 is lower than the height of the spinning unit 2. Specifically, the height of the carriage casing 85 is slightly lower than the position of the yarn slack eliminating portion 12 of the spinning unit 2.

  The carriage casing 85 is formed so as to cover the package placement portion 21 provided in the unit frame 6 from above. Therefore, in the present embodiment, the doffing cart 4 is disposed on the outermost side of the spinning machine 1. The carriage casing 85 has a passage recess 85 b that is recessed in a C-shape in cross section through which the rod-like member 16 can pass. The passage recess 85 b is formed on the surface facing the spinning unit 2 and has a size that allows the support member 96 that supports the rod-like member 16 in addition to the rod-like member 16 to pass therethrough. The passage recess 85b is provided with a guide roller 85c for preventing overturning, which is guided by the rod-like member 16, as shown in an enlarged view in a portion A of FIG. Two guide rollers 85c are arranged with the rod-shaped member 16 sandwiched from the left and right.

  The suction pipe 88 is provided on the carriage casing 85 so as to be extendable and swingable. The suction pipe 88 advances into the spinning unit 9 and captures the upper yarn end of the spun yarn 10 sent from the spinning unit 9 while sucking it. Then, the spun yarn 10 that swings and captures while retracting is guided to a bobbin 48 attached to the winding unit 13. The range GL of the guiding operation of the suction pipe 88 is a range indicated by a two-dot chain line in FIG. The empty bobbin supply member 89 is rotatably provided on the carriage casing 85 in order to supply the empty bobbin 48 to the winding unit 13. The cradle operation arm 90 is swingably attached to the carriage casing 85, and the package 45 can be removed by swinging the cradle arm 71 of the winding unit 13.

(5) Blower Box The blower box 80 is connected to the first suction duct 17, the second suction duct 18, and the third suction duct 19. The blower box 80 is equipped with a blower (not shown) for generating a flow of air sucked into the first suction duct 17, the second suction duct and the third suction duct 19.

(6) Unit frame The unit frame 6 is a frame-shaped member on which, for example, eight spinning units 2 are mounted. The unit frame 6 includes a main frame 20 on which the spinning unit 2 is mounted, a package placement unit 21 disposed on the front side of the main frame 20, a step 22, and a toe storage unit 23.

(6-1) Main frame The main frame 20 is a member configured by assembling steel materials. As shown in FIGS. 2 and 3, an inclined support portion 20 a for supporting the draft portion 7 and the spinning portion 9 of the spinning unit 2 is formed on the upper front portion of the main frame 20. The inclination angle α of the support portion 20a is, for example, in the range of an angle of 50 degrees to 70 degrees. Thereby, the draft part 7 and the spinning part 9 are arranged upright from the conventional spinning machine. As a result, the distance from the work path to the draft unit 7 and the spinning unit 9 is shortened, and the operator can easily maintain the draft unit 7 and the spinning unit 9.

  A traveling space 20 c in which the yarn splicing cart 3 travels is formed in a recessed central portion of the front surface of the main frame 20. A first traveling rail 81 for the yarn splicing carriage 3 is mounted along the first direction at the lower portion of the traveling space 20c.

  A rear step 20f used as a worker's step is formed at the lower back of the main frame 20. The back step 20f is used when the worker works from the back side. The back step 20f is set to be slightly higher than the step 22 on the front side.

(6-2) Package Placement Unit As shown in FIGS. 2 and 3, the package placement unit 21 is a place where the package 45 that is fully wound by the winding unit 13 is placed. The package mounting portion 21 is formed to be recessed in a polygonal shape in a cross-sectional view for the purpose of mounting the truncated cone-shaped package 45 whose head is cut without rolling. As shown in FIG. 1, the package mounting portion 21 is disposed along the first direction over the entire length of the spinning machine 1. Moreover, the package mounting part 31 is arrange | positioned at the winding-up part 13 side. The package placement unit 21 includes a package transport unit 25 in the form of, for example, a belt conveyor, as shown in an enlarged view in part B of FIG. The package transport unit 25 transports the placed package 45 to one end side (for example, the blower box 80 side) or the other end side in the first direction.

  Among the side surfaces in the longitudinal direction of the package mounting portion 21, the side surface 21a on the second side opposite to the first side on which the plurality of spinning units 2 are arranged is shown in an enlarged manner in the portion B in FIG. A package protection unit 27 that is bent along the shape of the package 45 is mounted. The tip of the package protection part 27 is rounded so that the package 45 is not damaged. By providing such a package protection unit 27, even if an operator is placed on the step 22 close to the package placement unit 21, the package 45 is not easily contaminated by the operator. Further, when the package 45 is placed on the package placement unit 21 and when the package 45 is transported by the package transport unit 25, the package 45 is protected.

  Between the package mounting portion 21 and the winding portion 13, a package guide portion 28 that is used when doffing with the doffing cart 4 is provided. The package guide unit 28 guides the package 45 on which the spun yarn 10 is wound to the package placement unit 21. The package guide portion 28 has an inclined surface 28 a that is tapered downward from the winding portion 13 toward the package placement portion 21. The inclination angle of the inclined surface 28a is not less than 30 degrees and not more than 60 degrees, preferably not less than 30 degrees and not more than 45 degrees.

  By providing the package guide portion 28 having such an inclined surface 28 a between the winding portion 13 and the package placement portion 21, the package 45 being wound and the package 45 disposed on the package placement portion 21. And no longer interfere. Therefore, the winding unit 13 can perform the winding operation of the package 45 regardless of the state of the package 45 mounted on the package mounting unit 21. For this reason, the spinning efficiency of the spinning machine 1 is improved.

  When the angle of the inclined surface 28 a exceeds 60 degrees, the package 45 placed on the package placement unit 21 is positioned below the package 45 wound up by the winding unit 13. For this reason, generally, in order to avoid interference between packages, it is necessary to increase the height of the spinning machine 1. However, when the angle of the inclined surface 28a is set to 60 degrees or less as in the present embodiment, the above-described problems can be avoided and the height of the spinning machine 1 can be reduced.

  When the angle of the inclined surface 28a is less than 30 degrees, in order to avoid interference between the package 45 wound by the winding unit 13 and the package 45 mounted on the package mounting unit 21, the winding is performed. The package mounting portion 21 must be greatly separated from the portion 13. As a result, the length of the spinning machine 1 in the depth direction is increased, and the workability of the operator is reduced. However, by setting the angle of the inclined surface 28a to 30 degrees or more as in the present embodiment, the size of the spinning machine 1 in the depth direction can be reduced, and the workability of the operator is improved.

  Usually, the diameter of the fully wound package 45 is about 310 mm at the maximum, so that the winding center of the winding unit 13 and the center position of the package mounted on the package mounting unit 21 are in the range of 320 mm to 360 mm. By doing so, the interference of the package can be prevented. By setting the inclined surface 28a within the above angle range, the depth direction dimension of the spinning machine 1 can be reduced and the height can be reduced.

(6-3) Step Step 22 is arranged along the first direction so that the package placement portion 21 is positioned between the plurality of spinning units 2. That is, the step 22 is disposed on the second side surface (the left side surface in FIG. 2) of the package placement unit 21. Further, the step 21 is arranged at a position lower than the height of the package placement unit 21. Step 22 is used as a step used by an operator for maintenance of the spinning unit 2. Step 22 is formed of a flat surface and has a step surface 22a on which an operator's foot can be placed. A second travel rail 82 on which the doffing cart 4 travels is disposed on the step surface 22a. The second traveling rail 82 is a metal plate-like member having a slight thickness. Inside the step 22, a cable bear 26 is provided for supplying power to the doffing cart 4, communicating various signals and supplying compressed air, and a pneumatic piping hose. The outer side away from the spinning unit 2 in step 22 is an operator passage.

(6-4) Toe Storage Unit The toe storage unit 23 has a space that can store the toe of the operator's feet placed on the step surface 22a, as shown in an enlarged view in part B of FIG. The toe storage part 23 is formed so as to enter under the package placement part 21. Specifically, the toe storage part 23 is formed so as to overlap in the vertical direction below the package placement part 21. The space of the toe storage part 23 is formed on the second side surface of the package mounting part 21 so as to protrude toward the first side. By providing such a toe storage part 23, an operator placed on step 22 can further approach the spinning unit 2. Thereby, workability | operativity can be improved when an operator performs work, such as a maintenance.

(7) Bar-shaped member The bar-shaped member 16 has a function as a handrail and a function as a guide part of the doffing cart 4. The rod-shaped member 16 is, for example, a stainless steel pipe member, and is disposed at a position away from the spinning unit 2. Thereby, for example, when performing an operation such as maintenance on the spinning unit 2, the operator can place a hand on the rod-shaped member 16 or leave the body for the operation. For this reason, even if the work is performed while facing the spinning unit 2, the worker can work stably in the posture.
As shown in part A of FIG. 2, guide rollers 85 c of the doffing carriage 4 are in contact with the outer peripheral surface of the rod-like member 16 from the left and right sides. As shown in FIG. 1, the rod-like member 16 is arranged along the first direction. As shown in FIG. 2, the rod-shaped member 16 is disposed on the side away from the spinning unit 2 from the range GL of the guide operation of the suction pipe 88 of the doffing carriage 4. Further, the rod-like member 16 is disposed between the yarn path LP and the step 22.
In this way, the doffing cart 4 can be guided by the second traveling rail 82 and the rod-shaped member 16. Here, by guiding the upper part of the doffing carriage 4 with the rod-shaped member 16 and guiding the upper part of the doffing carriage 4 with the second travel rail 82, the positional accuracy of the doffing carriage 4 with respect to the spinning unit 2 is increased. For this reason, the doffing cart 4 can perform the doffing operation with high accuracy from the doffing position.

  The rod-like member 16 is supported by a plurality of support members 96 arranged at intervals in the first direction. The support member 96 fixes the lower surface of the rod-shaped member 16. Therefore, the support member 96 is not disposed on the upper surface and the left and right surfaces of the rod-shaped member 16. Thereby, the guide roller 85c can be disposed.

  The support member 96 is arranged for every four spinning units 2, for example. The support member 96 is fixed to the front surface of the main frame 20. The support member 96 is a thick plate-like member, and has a suction passage (not shown) communicating with the second suction duct 18 inside. A suction cap 96a as a suction portion is attached to the tip of the suction passage so as to be rotatable, for example, between an open position and a closed position. When the suction cap 96a is rotated to the open position, the suction passage can be opened and yarn waste and the like can be sucked. Thereby, wastes, such as yarn waste collected by the operator during maintenance work, can be discarded.

  Further, as shown in FIGS. 1, 2, and 3, a stop operation unit 29 is disposed below the rod-shaped member 16 along the rod-shaped member 16. A through hole 96 b through which the stop operation part 29 can pass is formed at the lower end of the support member 96. The stop operation unit 29 is a rope-like member having an emergency stop button 30 connected to one end. When the stop operation unit 29 is pulled in a direction away from the support member 96, the stop operation unit 29 is configured to perform an emergency stop operation in the same manner as when the emergency stop button 30 is pressed. As a result, the operator can quickly perform an emergency stop operation at any position as long as it is in front of the spinning machine 1. Moreover, since the stop operation unit 29 is disposed below the rod-like member 16, it is difficult for an operator to operate the stop operation unit 29 by mistake.

(8) Suction Duct As shown in FIGS. 2 and 3, the first suction duct 17 collects yarn waste generated when the yarn splicing cart 3 performs the yarn splicing operation and conveys it to the blower box 80. The second suction duct 18 collects yarn waste generated before and after the yarn splicing operation and conveys it to the blower box 80. The third suction duct 19 collects dust and floating fibers generated during the draft of the draft unit 7 and dust and yarn waste generated during spinning by the spinning unit 9 and conveys them to the blower box 80.

  In the present embodiment, the first suction duct 17 is disposed in the main frame 20 so as to be disposed below the yarn splicing carriage 3 in the vertical position. Further, the second suction duct 18 is disposed in the main frame 20 so as to be disposed above the yarn joining cart 3. The third suction duct 19 is disposed in the main frame 20 so as to be disposed behind the draft unit 7 and the spinning unit 9.

  Here, the second suction duct 18 and the third suction duct 19 are continuously provided in each main frame 20 of the spinning machine 1. On the other hand, the first suction duct 17 includes a main suction duct 17a, a sub suction duct 17b, and a connection duct 17c that are provided continuously to the main frame 20. The sub suction duct 17b is provided in each main frame 20 with both ends closed. The connection duct 17c connects the main suction duct 17a and the sub suction duct 17b. The main suction duct 17a is disposed below the yarn splicing carriage 3, and is disposed along the first direction of the plurality of spinning units 2 with the plurality of spinning units 2 as one set. The auxiliary suction duct 17 b is provided below the second suction duct 18, that is, provided above the yarn joining cart 3. The sub suction duct 17b is provided with a shutter 95 on the lower surface at a position corresponding to the spinning unit 2 that opens and closes according to the traveling of the yarn splicing carriage 3.

(9) Maintenance Work In the spinning machine 1 configured as described above, when the maintenance work of the spinning unit 2 is performed, the operator is placed in Step 22. When the worker is placed on the step 22, the toe of the shoe can be placed in the toe storage part 23. Since the toe storage part 23 is located below the package placement part 21, the operator can approach the spinning unit 2 as much as possible. For this reason, an operator's working efficiency can be improved. Moreover, the rod-shaped member 16 is disposed along the first direction so as to face the front surface of the spinning unit 2. An operator can perform maintenance work by placing his / her hand on the rod-shaped member 16 or depositing his / her body on the rod-shaped member 16. For this reason, an operator's working efficiency can further be improved. Further, since the draft unit 7 and the spinning unit 9 of the spinning unit 2 are erected and arranged, the draft unit 7 and the spinning unit 9 are arranged closer to the operator who has been placed in Step 22. For this reason, it becomes easier for the operator to perform the maintenance work of the spinning unit 2.

(10) Features The above embodiment can be expressed as follows.

(A) The spinning machine 1 as a spinning machine includes a plurality of spinning units 2, a package placement unit 21, a step 22, and a toe storage unit 23. The plurality of spinning units 2 are arranged along the first direction and have a winding unit 13 that winds up the package 45. The package placement unit 21 is disposed along the first direction. The package placement unit is disposed on the winding unit 13 side of the spinning unit 2. The step 22 is arranged along the first direction so that the package placement portion 21 is positioned between the plurality of spinning units 2. Further, the step 22 is arranged at a position lower than the height of the package placement unit 21. Step 22 has a step surface 22a on which an operator's foot can be placed. The toe storage part 23 has a space that can store the toes of the operator's feet placed on the step surface 22a. The toe storage part 23 is formed so as to enter under the package placement part 21.
In this spinning machine 1, when an operator puts on the step 22 for maintenance or the like, the toe of the shoe can be stored in the toe storage part 23 formed on the tip side of the step 22. Since the toe storage portion 23 is formed below the package placement portion 21, the toe is positioned closer to the spinning unit 2 than the side surface 21 a on the second side of the package placement portion 21. For this reason, when placed on the step 22, the operator can approach the spinning unit 2 by the length of the toe storage portion 23.

  (B) The spinning machine 1 further includes a package protection unit 27. The package protection unit 27 is arranged on the second side surface 21 a side of the package placement unit 21, that is, on the side where the step 22 is formed below, and is bent so as to follow the shape of the package 45. Thus, the package protection unit 27 is provided between the package placement unit 21 and step 22. For this reason, even if the worker is placed on the step 22 approaching the package placement portion 21, the package 45 is less likely to be contaminated by the worker. Further, when the package 45 is placed on the package placement unit 21 or transported by the package placement unit 21, the package 45 is protected.

  (C) The spinning machine 1 further includes a second traveling rail 82 and a doffing cart 4. The second traveling rail 82 is disposed on the step 22 along the first direction. The doffing carriage 4 is a carriage that is provided so as to be able to travel on the second traveling rail 82 and that transports the package 45 from the spinning unit 2 to the package mounting portion 21. Thereby, since the 2nd driving rail 82 is arrange | positioned on step 22, even if the doffing cart 4 is provided, the structure of the spinning machine 1 whole becomes compact.

  (D) The height of the doffing cart 4 is lower than the height of the spinning unit 2. Thereby, an operator can work on the spinning unit 2 on which the doff carriage 4 is located.

  (E) The package placement unit 21 includes a package transport unit 25 that transports the package 45 along the first direction. Thereby, the package 45 placed on the package placement unit 21 can be transported in the first direction by the package transport unit 25. For this reason, the production efficiency of the spinning machine 1 is increased.

  (F) The spinning machine 1 further includes a package guide unit 28 that guides the package 45 on which the spun yarn 10 is wound up to the package placement unit 21. The package guide portion 28 has an inclined surface 28 a that is tapered downward from the winding portion 13 toward the package placement portion 21. As a result, the package 45 moves from the winding unit 13 to the package mounting unit 21 while rolling. For this reason, the impact which acts on the package 45 when it mounts on the package mounting part 21 can be reduced.

(G) The spinning unit 2 includes a draft unit 7 that drafts the sliver 15 to make the fiber bundle 8, and a spinning unit 9 that creates the spun yarn 10 by spinning the fiber bundle 8 sent from the draft unit 7. In addition. The draft unit 7 is arranged at the upper part of the spinning unit 2. The winding unit 13 is disposed below the spinning unit 2 so as to wind the spun yarn 10 generated by the spinning unit 9 into the package 45. The step 22 is arranged below the winding unit 13 in the height direction of the spinning unit 2.
In a conventional spinning machine in which a step is arranged at a position close to the worker passage, when the worker stands in the worker passage, the worker easily comes into contact with the package placed on the package placement portion. However, as described above, since the toe storage portion 23 is arranged in the step 22, even if an operator stands in the worker passage, without contacting the package 45 placed on the package placement portion 21, An operator can approach the spinning unit 2.

  (H) The spinning machine 1 further includes a rod-like member 16 disposed along the first direction at a distance from the plurality of spinning units 2 on the front side of the plurality of spinning units 2. Accordingly, even if the worker approaches the spinning unit 2 by the length of the toe storage portion 23, the approach of the worker is restricted by the rod-shaped member 16, and the worker does not accidentally approach the spinning unit 2 too much.

(11) Other Embodiments Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the invention. In particular, a plurality of embodiments and modifications described in this specification can be arbitrarily combined as necessary.

  (A) In the above embodiment, the yarn path is formed from above to below, but the present invention can also be applied to a spinning machine in which the yarn path is formed from below to above.

  (B) In the above-described embodiment, the second guide rail for the doffing cart is arranged on the outside of the package placement unit, but the present invention is also applied to a spinning machine in which the second guide rail is provided on the inside of the package placement unit. The invention can be applied. In this case, since the step is separated from the spinning unit as compared with the above-described embodiment, the operator can further approach the spinning unit by providing the toe storage portion.

  (C) In the embodiment and the modification, the spun yarn 10 is pulled out from the spinning unit 9 by the yarn slack eliminating unit 12, but the present invention is not limited to this. For example, instead of the yarn slack eliminating portion 12, a known delivery roller and nip roller are arranged, and the spun yarn 10 is nipped by two rotating rollers, and the spun yarn 10 is pulled out from the spun portion 9. Even in this case, in order to eliminate the slack of the spun yarn 10 that occurs during the winding operation, the yarn slack eliminating portion 12 may be disposed on the downstream side of the delivery roller and the nip roller.

  (D) In the embodiment and the modification, the package placement unit 21 is provided with the package transport unit in the form of a belt conveyor. However, the package placement unit 21 may not be provided with the package transport unit. In this case, the operator may manually collect the package 45 doffed from the winding unit 13.

  The present invention is widely applicable to spinning machines having steps.

1 Spinning machine (example of spinning machine)
DESCRIPTION OF SYMBOLS 2 Spinning unit 3 Yarn splicing cart 4 Doffing cart 5 Motor box 6 Unit frame 7 Draft part 8 Fiber bundle 9 Spinning part 10 Spinning yarn 12 Yarn slack removal part 13 Winding part 15 Sliver 16 Rod-shaped member 17 First suction duct 17a Suction duct 17b Sub-suction duct 17c Connection duct 18 Second suction duct 19 Third suction duct 20 Main frame 20a Support portion 20c Traveling space 20f Rear step 21 Package placement portion 21a Second side surface 22 Step 22a Step surface 23 Toe storage Part 25 Package transport part 26 Cable bearer 27 Package protection part 28 Package guide part 28a Inclined surface 29 Stop operation part 30 Emergency stop button 41 Dolly part 41e Traveling wheel 41f Guide roller 41g Guide rail 43 Yarn splicing device 44 Suction pie 45 Package 46 Suction mouth 47 Suction air pipe 48 Bobbin 52 Yarn clearer 70 Support shaft 71 Cradle arm 72 Winding drum 80 Blower box 81 First traveling rail 82 Second traveling rail 85 Carriage casing 85a Traveling wheel 85b Passing recess 85c Guide roller 88 Suction pipe 89 Empty bobbin supply member 90 Cradle operation arm 95 Shutter 96 Support member 96a Suction cap 96b Through hole

Claims (8)

A plurality of spinning units disposed along the first direction and having a winding unit for winding the package;
A package placement unit disposed along the first direction and on the winding unit side of the spinning unit;
Arranged along the first direction so that the package placement portion is located between the plurality of spinning units and at a position lower than the height of the package placement portion, it is possible to place an operator's feet A step having a step surface,
A toe storage part having a space capable of storing the toes of the operator's feet placed on the step surface, and formed so as to enter below the package mounting part;
Spinning machine equipped with   The spinning machine according to claim 1, further comprising a package protection unit that is disposed on a side where the step of the package mounting unit is formed below and is bent so as to follow the shape of the package. A travel rail disposed on the step along the first direction;
The spinning machine according to claim 1 or 2, further comprising a doffing carriage that is provided so as to be able to run on the running rail and that carries the package from the spinning unit to the package placement unit.   The spinning machine according to claim 3, wherein a height of the doffing cart is lower than a height of the spinning unit.   The spinning machine according to any one of claims 1 to 4, wherein the package placement unit includes a package transport unit that transports the package along the first direction.   The package guide part which has an inclined surface which descends toward the said package mounting part from the said winding part, and guides the said package by which the spun yarn was wound up to the said package mounting part. The spinning machine according to any one of? The spinning unit is
A draft section that drafts the sliver into a fiber bundle;
A spinning unit for spinning a fiber bundle sent from the draft unit to produce a spun yarn, and
The draft section is arranged at the top of the spinning unit,
The winding unit is disposed at a lower portion of the spinning unit so as to wind up the spun yarn generated by the spinning unit into a package,
The spinning machine according to any one of claims 1 to 6, wherein the step is disposed below the winding unit in a height direction of the spinning unit. The spinning machine according to any one of claims 1 to 7 , further comprising a rod-shaped member disposed along a first direction at a distance from the plurality of spinning units on a front side of the plurality of spinning units.

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