Thread lowering device

Abstract

To provide a structure in which maintenance frequency of a rail is low, in a thread lowering device for moving up / down a thread guard part by using the rail.SOLUTION: A thread lowering device includes a thread holding part, a rail 51, a slide part 52 and a cover 53. The cover 53 covers at least part of a side surface part of the rail 51. At the cover 53, a gap 84 and an opening / closing mechanism 85 are provided. The gap 84 extends in the vertical direction. The opening / closing mechanism 85 opens / closes the gap 84, and forms an open portion 86 and a closed portion 87 at the cover 53. Via the open portion 86 of the cover 53, at least part of the slide part 52 is exposed to the outside of the cover 53. When a boundary between the open portion 86 for exposing the slide part 52 and the closed portion 87 above that is defined as an upper boundary, by the slide part 52 sliding, the slide part 52 acts on the opening / closing mechanism 85 and the upper boundary moves together with the slide part 52.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a yarn unloading device that unloads yarn from a level where a spinning device is provided to a level where a winding device is provided. [Background technology]

[0002] Patent Document 1 discloses a yarn unloading device. The yarn unloading device includes a yarn unloading member that hooks and holds the yarn spun by the spinning device. A wire is connected to the yarn unloading member, and the yarn unloading member is lowered by pulling out the wire. The yarn unloading member is raised by winding up the wire. This allows the yarn unloading member to be raised and lowered between the upper and lower floors. A guide member is provided in the area where the yarn unloading member rises and falls to guide the yarn unloading member as it rises and falls.

[0003] Patent Document 2 discloses a cover device that covers the processing head of a processing machine. The cover device includes multiple covers. The cover device expands and contracts as the multiple covers overlap and are released from overlap. This allows the processing head to be continuously covered even when the processing head moves. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2018-178318 A [Patent Document 2] Japanese Patent Application Publication No. 5-177499 Summary of the Invention [Problem to be solved by the invention]

[0005] Yarn waste generated in the spinning device is present around each part of the yarn unloading device, for example, the yarn unloading member. Therefore, in the yarn unloading device of Patent Document 1, lint may adhere to the guide member, etc. Furthermore, when a rail structure is used instead of a wire to raise and lower the yarn unloading member (yarn hooking part), lint accumulates on the rail, necessitating frequent maintenance. Note that the telescopic cover device shown in Patent Document 2 is configured to overlap and shrink the covers, so it is only effective for structures with a small amount of movement, such as a processing head. Therefore, this type of telescopic cover device cannot be applied to the rail of the yarn unloading device.

[0006] The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a thread unloading device that uses a rail to raise and lower a thread hooking section, and has a configuration that reduces the frequency of maintenance of the rail.

[0007] The problem to be solved by the present invention has been described above. Next, the means for solving this problem and the effects thereof will be described.

[0008] According to an aspect of the present invention, a yarn unloading device having the following configuration is provided. That is, the yarn unloading device unloads the yarn from a second level where a spinning device that spins the yarn is provided to a first level where a winding device that winds the yarn is provided. The yarn unloading device includes a yarn holding section, a rail, a slide section, and a cover. The yarn holding section holds the yarn spun by the spinning device. The rail is provided to extend vertically from the first level to the second level. The slide section is connected to the yarn holding section and slides along the rail together with the yarn holding section. The cover covers at least a portion of a side surface of the rail. The cover is provided with a slit and an opening / closing mechanism. The slit extends vertically. The opening / closing mechanism opens and closes the slit to form an open portion and a closed portion in the cover. At least a portion of the slide section is exposed to the outside of the cover through the open portion of the cover. When the boundary between the open portion for exposing the sliding portion and the closed portion above it is referred to as the upper boundary, when the sliding portion slides, the sliding portion acts on the opening and closing mechanism, and the upper boundary moves together with the sliding portion.

[0009] As a result, the upper boundary moves in accordance with the sliding of the sliding part, so that an open portion is unlikely to be formed above the sliding part. As a result, lint is unlikely to accumulate on the rail, so that the frequency of rail maintenance can be reduced.

[0010] The thread unloading device is preferably configured as follows: That is, when the boundary between the open portion for exposing the slide portion and the closed portion below it is referred to as a lower boundary, the slide portion slides, so that the slide portion acts on the opening and closing mechanism, and the lower boundary moves together with the slide portion.

[0011] As a result, the lower boundary moves in accordance with the sliding of the sliding part, so that an open area is less likely to be formed below the sliding part. As a result, lint is less likely to accumulate on the rail, so that the frequency of rail maintenance can be further reduced.

[0012] In the above-mentioned yarn unloading device, it is preferable that the cover is tubular and has a closed top.

[0013] This makes it difficult for lint to enter through the top surface of the cover, and as a result, lint is further prevented from accumulating on the rail, further reducing the frequency of rail maintenance.

[0014] In the above-mentioned thread unloading device, it is preferable that the slit in the cover continues from the upper end to the lower end of the cover.

[0015] This makes it possible to accommodate even a wide range of movement of the sliding portion.

[0016] The yarn unloading device is preferably configured as follows: The yarn unloading device includes a fixing member that connects the rail to a base body and fixes the rail. An opening is provided in the cover in a portion other than the slit. The fixing member connects the rail to the base body through the opening.

[0017] This makes it possible to both fix the rail and prevent the accumulation of lint on the rail.

[0018] The yarn unloading device is preferably configured as follows. That is, the opening and closing mechanism includes a first member, a second member, and an opening and closing member. The first member is provided along the slit on the first side portion separated by the slit. The second member is provided along the slit on the second side portion separated by the slit. The opening and closing member connects the first member and the second member. The opening and closing member is fixed to the slide portion, and the opening and closing member and the slide portion move integrally.

[0019] This makes it possible to easily realize a configuration in which the upper boundary moves in conjunction with the sliding of the sliding portion.

[0020] The yarn unloading device is preferably configured as follows. That is, the opening and closing mechanism includes a first member and a second member. The first member is provided along the slit at a portion of the first side separated by the slit. The second member is provided along the slit at a portion of the second side separated by the slit and is joinable to the first member. The first member and the second member are separated by the sliding portion coming into contact with a joining portion of the first member and the second member. The first member and the second member are joined by the sliding portion moving away from the separating portion of the first member and the second member.

[0021] This makes it possible to more easily realize a configuration in which the upper boundary moves in conjunction with the sliding of the sliding portion. [Brief description of the drawings]

[0022] [Figure 1] FIG. 2 is a schematic diagram showing the configuration of a spinning winding device. [Diagram 2] FIG. 2 is a block diagram showing a simplified control configuration of the fiber winding apparatus. [Diagram 3] FIG. 4 is a cross-sectional view showing the configuration of the yarn unloading device and its surrounding members. [Figure 4] FIG. [Diagram 5] FIG. 4 is a perspective view showing a state of the cover when the sliding portion is at a first height. [Figure 6] FIG. 13 is a perspective view showing a state of the cover when the sliding portion is at a second height. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Next, an embodiment of the present invention will be described with reference to the drawings. In the following description, "upstream" and "downstream" refer to the upstream and downstream in the running direction of the produced yarn Y.

[0024] First, an overview of a take-up winding apparatus 1 will be described with reference to Fig. 1. The take-up winding apparatus 1 shown in Fig. 1 is an apparatus that spins a synthetic fiber yarn Y and winds the spun yarn Y to form a package P.

[0025] The spinning winding apparatus 1 includes a spinning device 3, a yarn unloading device 5, a threading device 2, a take-up section 6, and a winding device 7. The yarn Y spun by the spinning device 3 is unloaded from the second floor to the first floor by the yarn unloading device 5. The yarn Y unloaded to the first floor is threaded by the threading device 2 and taken up by the take-up section 6. The winding device 7 winds the yarn Y taken up by the take-up section 6 to form a package P. The spinning winding apparatus 1 is installed in a building having multiple floors. In the following description, the floor on which the spinning device 3 is located is referred to as the second floor, and the floor on which the winding device 7 is located is defined as the first floor. The second floor is provided at a higher position than the first floor. The first and second floors are separated by a partition floor 9.

[0026] 1 shows one each of the spinning device 3, take-up section 6, and winding device 7, but a plurality of these devices may be provided. In this case, a plurality of threading devices 2 or thread unloading devices 5 may be provided. Alternatively, one threading device 2 or thread unloading device 5 may be provided for a plurality of spinning devices 3, etc.

[0027] As shown in FIG. 2, the take-up winding apparatus 1 includes a centralized control device 101, a winding control device 102, and a threading control device 103. The centralized control device 101, the winding control device 102, and the threading control device 103 are each a known computer equipped with a CPU, a ROM, a RAM, and the like, and the CPU executes programs stored in the ROM to perform various controls. The centralized control device 101 controls each part of the take-up winding apparatus 1. The winding control device 102 controls each part of the take-up unit 6 and the winding device 7. The threading control device 103 controls each part of the threading device 2. The combination of the control device and the control target controlled by the control device is an example and can be changed. For example, the centralized control device 101 may control each part of the threading device 2, or a control device that controls the take-up unit 6 may be provided separately.

[0028] Each device constituting the spinning winding apparatus 1 will be described in detail below. The spinning apparatus 3 has multiple spinnerets (not shown). A molten polymer in a high temperature state is supplied to the spinnerets by a polymer supply device (not shown) such as a gear pump. The spinning apparatus 3 extrudes the molten polymer from each spinneret. As a result, the yarn Y is spun from each spinneret of the spinning apparatus 3.

[0029] A cooling device 10 and an oil agent guide 11 are installed downstream of the spinning device 3. The cooling device 10 is installed immediately below the spinning device 3. The cooling device 10 includes a plurality of cooling cylinders (not shown). Cooling air is supplied to each cooling cylinder through a cooling air pipe (not shown). The yarn Y passing through the cooling cylinder is cooled and solidified by the cooling air. The oil agent guide 11 is disposed below the cooling device 10. The oil agent guide 11 applies an oil agent to each yarn Y passing through it. The yarn Y to which the oil agent has been applied by the oil agent guide 11 is sent to the first layer.

[0030] The partition floor 9 is formed with a yarn passing hole 9a for sending the yarn Y to the first floor. Duct-shaped interfloor tubes 8 are provided upstream and downstream of the partition floor 9 so as to surround the yarn passing hole 9a. The interfloor tubes 8 prevent yarn swaying caused by external factors such as wind while the yarn Y travels from the second floor to the first floor. The interfloor tubes 8 may be provided only on the first floor. Also, the interfloor tubes 8 may be omitted.

[0031] The yarn unloading device 5 is provided to span the first and second levels, and performs an operation of unloading the yarn Y from the second level to the first level. As shown in Fig. 3, the yarn unloading device 5 includes a lifting mechanism 50, a cover 53, a yarn holding unit 54, and a fixing member 55.

[0032] The lifting mechanism 50 includes a rail 51 and a slide portion 52. The rail 51 is arranged to extend in the vertical direction from the first floor to the second floor. The rail 51 extends in the vertical direction means that the longitudinal direction of the rail 51 is substantially the same as the vertical direction. The slide portion 52 is arranged to be slidable along the rail 51. As shown in FIG. 2, the lifting mechanism 50 is driven by the power of the thread lowering actuator 59, so that the slide portion 52 moves up and down along the rail 51. In this embodiment, the lifting mechanism 50 is a magnet slider mechanism and includes a magnet gear. The thread lowering actuator 59 is a motor that rotates the magnet gear. The lifting mechanism is not limited to the magnet slider mechanism. For example, the lifting mechanism may be a ball screw mechanism. The thread lowering actuator 59 is not limited to a rotary motor, and may be a linear motor. The thread lowering actuator 59 is controlled by the centralized control device 101, but as described above, a dedicated control device for the thread lowering device 5 may be provided.

[0033] The cover 53 covers at least a part (all of the rail 51 in this embodiment) of the rail 51. The cover 53 is provided to prevent lint from adhering to the rail 51. The detailed configuration of the cover 53 will be described later.

[0034] The thread holding part 54 is attached to the sliding part 52. The thread holding part 54 moves up and down integrally with the sliding part 52. In this embodiment, the sliding part 52 is a part that slides along the rail 51, and also indicates a part to which the thread holding part 54 is attached.

[0035] The yarn holding unit 54 includes two yarn threading rollers 54a. Each of the yarn threading rollers 54a is, for example, a roller that is rotatably supported. A ring-shaped groove is formed on the outer circumferential surface of the yarn threading roller 54a along the outer circumferential surface. The yarn holding unit 54 holds the yarn Y by inserting the yarn Y into the groove of the yarn threading roller 54a. With this configuration, the yarn Y can be lowered to the first layer by moving the lifting mechanism 50 from the second layer to the first layer while the yarn Y is held by being hung on the two yarn threading rollers 54a.

[0036] The fixing member 55 is a member that connects the rail 51 to the base body 9b and fixes the rail 51. This allows the lifting mechanism 50, the cover 53, the thread holding unit 54, and the like to be supported. The base body 9b is a structure or a heavy object provided on the partition floor 9. The base body 9b may be a frame of a machine provided on the second floor. At least one fixing member 55 is provided. The fixing member 55 connects the rail 51 and the base body 9b through an opening 89 provided in the cover 53. This allows the rail 51 to be supported by the base body 9b while being covered by the cover 53.

[0037] The threading device 2 is disposed on the first floor. The threading device 2 performs threading work. The threading work means the work of setting the yarn Y, which has been lowered by the yarn unloading device 5, in the take-up section 6 and then fixing it to the bobbin B of the winding device 7. This threading work enables the winding device 7 to wind the yarn Y and form a package P. The threading device 2 includes the above-mentioned threading control device 103, an arm drive motor 21, and an arm 22.

[0038] The arm 22 is of a multi-joint type, and is driven by an arm drive motor 21. The arm drive motor 21 is controlled by a yarn threading control device 103. A yarn capture member (not shown) that captures the yarn Y is provided at the tip of the arm 22. The yarn capture member is, for example, a suction device that sucks in the yarn Y, or a hook-shaped member that hooks the yarn Y. When the arm 22 is driven with the yarn Y captured at the tip of the arm 22, the yarn Y captured by the yarn capture member can be guided.

[0039] The take-up unit 6 is disposed on the first floor. The take-up unit 6 is used to take up a plurality of yarns Y traveling downward from the second floor. The take-up unit 6 includes two godet rollers 61 and 62. In the following description, the godet roller located upstream in the traveling direction of the yarns Y is referred to as the upstream godet roller 61, and the godet roller located downstream is referred to as the downstream godet roller 62.

[0040] As shown in Fig. 2, the upstream godet roller 61 is driven by an upstream godet motor 61a. The downstream godet roller 62 is driven by a downstream godet motor 62a. As shown by the dashed arrow in Fig. 1, the downstream godet roller 62 is movable between a yarn hooking position close to the upstream godet roller 61 and a package forming position located directly above the winding device 7. The upstream godet motor 61a and the downstream godet motor 62a are controlled by a winding control device 102.

[0041] The winding device 7 winds the multiple yarns Y traveling from the take-up section 6 to form a package P. The winding device 7 includes a turret 71, two bobbin holders 72, a traverse device 73, and a contact roller 74.

[0042] The turret 71 is rotatably installed. Two bobbin holders 72 are rotatably supported by the turret 71. Each of the bobbin holders 72 is formed to be elongated in the front-rear direction. The two bobbin holders 72 are disposed on opposite sides of the rotation axis of the turret 71. When the turret 71 rotates, the positions of the two bobbin holders 72 are interchanged.

[0043] Specifically, the two bobbin holders 72 are located at an upper winding position and a lower standby position. The bobbin holder 72 at the winding position is close to the contact roller 74, and the bobbin holder 72 at the standby position is separated from the contact roller 74. A plurality of bobbins B are attached to each bobbin holder 72. The plurality of bobbins B are arranged in the longitudinal direction of the bobbin holder 72.

[0044] The traverse device 73 includes a plurality of traverse guides 73a corresponding to the plurality of bobbins B. Each traverse guide 73a is disposed to correspond to each bobbin B. The traverse guides 73a are driven by a traverse motor 73b that operates in response to a control command from the winding control device 102. Each traverse guide 73a reciprocates in a direction parallel to the longitudinal direction of the bobbin holder 72, whereby the yarn Y is traversed and wound around the bobbin B.

[0045] The contact roller 74 comes into contact with the outer peripheral surfaces of the multiple packages P formed on each bobbin B, and applies contact pressure to each of the multiple packages P. The contact roller 74 is driven by a winding motor 70. The winding motor 70 is controlled by a winding control device 102.

[0046] Next, a yarn unloading operation using the yarn unloading device 5 and a yarn threading operation using the yarn threading device 2 will be briefly described.

[0047] In the yarn winding apparatus 1, for example, in a preparation stage before starting to form a package P or when a yarn breakage occurs for some reason, a yarn unloading operation and a yarn threading operation are performed in order to start (resume) winding of the yarn Y by the winding device 7. In this embodiment, the yarn unloading operation is performed by an operator operating the yarn unloading device 5. The yarn threading operation is performed automatically by the yarn threading device 2.

[0048] First, the operator uses a yarn suction unit such as a suction gun (not shown) to suck and hold the multiple yarns Y spun from the spinning device 3 upstream of the oil agent guide 11. Then, the operator hangs the multiple yarns Y sucked and held by the yarn suction unit on the oil agent guide 11.

[0049] Next, the operator uses a threading tool (not shown) to thread the yarn Y located between the yarn suction section and the oil agent guide 11 onto the threading tool. After that, the operator moves the threading tool so that the yarn Y between the yarn suction section and the threading tool is located directly below the two threading rollers 54a. When the operator removes the threading tool in this state, the yarn Y between the oil agent guide 11 and the yarn suction section is threaded onto the two threading rollers 54a. Accordingly, the yarn Y is held by the yarn holding section 54.

[0050] After the yarn unloading preparation work is completed, the operator operates an operation switch (not shown) or the like to instruct the yarn unloading device 5 to start the yarn unloading operation. This causes the centralized control device 101 to control the yarn unloading actuator 59, and the slide part 52 moves downward along the rail 51. As a result, the yarn holding part 54 moves to the delivery position on the first floor. This completes the yarn unloading work.

[0051] Next, the yarn threading control device 103 controls the arm drive motor 21 to drive the arm 22, and position the tip of the arm 22 near the yarn threading roller 54a. The tip of the arm 22 then captures the yarn Y that has been threaded on the yarn threading roller 54a. The arm 22 is then further driven, so that the yarn Y is threaded through the take-up unit 6 (the upstream godet roller 61 and the downstream godet roller 62) and the multiple fulcrum guides 13, in that order. The arm 22 is then further driven, so that the tip of the arm 22 moves to a predetermined position below the bobbin holder 72 located above, and the yarn Y comes into contact with the bobbin B.

[0052] The winding operation of the winding device 7 is started simultaneously with or shortly before the arm 22 guides the yarn Y to the bobbin B. The yarn Y is wound around the end of the rotating bobbin B, thereby fixing the end of the yarn Y to the bobbin B. When the winding operation is started, the traverse guides 73a reciprocate in a direction parallel to the axial direction of the bobbin B in conjunction with the rotation of the bobbin B. During the reciprocating movement of the traverse guides 73a, the yarn Y is hung on each of the traverse guides 73a. Thereafter, the yarn Y can be wound while traversing the bobbin B by the guidance of the traverse guides 73a. As a result, a package P can be formed.

[0053] Note that the flow of the yarn unloading and threading operations is an example, and at least some of the operations performed by the operator may be performed using a machine, or at least some of the operations performed by a machine (e.g., the threading device 2) may be performed by the operator.

[0054] Next, the detailed configuration and problems of the lifting mechanism 50 of the yarn unloading device 5 will be described with reference to FIG.

[0055] As shown in Fig. 4, rail 51 is formed with rail groove 51a. Slide protrusion 52a of slide portion 52 fits into rail groove 51a. This configuration allows slide portion 52 to slide smoothly along rail 51. Rail groove 51a and slide protrusion 52a are just an example, and rail 51 may be provided with a protrusion and slide portion 52 with a groove. In order to allow slide portion 52 to slide smoothly along rail 51, a combination structure including this type of projection and recess is required.

[0056] Here, in the space in which the lifting mechanism 50 is disposed, lint generated in the spinning device 3 is scattered. Therefore, if no measures are taken, lint is likely to accumulate in the rail groove 51a. Even if the rail groove 51a is not provided, lint accumulates in the uneven portion of the combined structure. Furthermore, in this embodiment, the oil applied by the oil guide 11 may be scattered in this space. In this case, the oil adheres to the rail groove 51a, making it easier for lint to accumulate in the rail groove 51a. As a result, the slide protrusion 52a cannot slide smoothly along the rail groove 51a. Therefore, the operator needs to stop the yarn unloading device 5 and disassemble it as necessary to clean the rail groove 51a. Hereinafter, this work will be simply referred to as maintenance. Since an increase in the frequency of maintenance reduces productivity and is also a burden on the operator, improvement is desirable.

[0057] As a countermeasure against the accumulation of lint in the rail groove 51a, for example, a scraper is provided on the slide portion 52. However, this method can collect lint but cannot remove it, so frequent maintenance is required as a result. Another countermeasure is to blow away the lint by injecting compressed air or to provide a suction device to suck up the lint. However, these methods require the installation of a hose to guide the compressed air or suction flow and the installation of multiple injection or suction ports, resulting in a complex configuration. In particular, the rail 51 is long in the vertical direction because it is arranged across the levels, so the required length of the hose is long and the required number of injection or suction ports is also large.

[0058] As another solution, there is a method of covering the upper side and the lower side of the sliding part 52 using an expandable cover as disclosed in Patent Document 2 etc. However, since the sliding part 52 in the thread unloading device 5 has a long moving distance, a large expansion ratio is required. Therefore, the configuration disclosed in Patent Document 2 etc. cannot be used with the thread unloading device 5.

[0059] Considering the above, in this embodiment, a cover 53 is provided that covers the rail 51 while exposing at least a part of the sliding portion 52 to the outside. Furthermore, this cover 53 has a structure that opens and closes so as to follow the upward and downward movement of the sliding portion 52. The sliding portion 52 and the cover 53 will be described in detail below.

[0060] As shown in Fig. 4, the slide portion 52 includes a slide block 52b, a connecting member 52c, and a hanging member 52d. The slide block 52b is a portion for realizing sliding. Since a magnet slider mechanism is adopted in this embodiment, the slide block 52b includes a magnet. The slide block 52b is also provided with the slide protrusion 52a described above. The connecting member 52c and the hanging member 52d are members for connecting the slide block 52b and the thread holding portion 54.

[0061] As described above, the sliding portion 52 is a portion that slides along the rail 51, and is a portion to which the thread holding portion 54 is attached. Therefore, not only the sliding block 52b but also a configuration including the sliding block 52b, the connecting member 52c, and the hanging member 52d corresponds to the sliding portion 52. Note that the configuration of the sliding portion 52 in this embodiment is one example, and the shape can be appropriately changed depending on the type of lifting mechanism used, the positional relationship with the thread holding portion 54, etc.

[0062] The cover 53 is made of fiber and has flexibility. The cover 53 can be made of various materials as long as it can block lint and can accommodate the opening / closing mechanism 85 described below. As shown in FIG. 5, the cover 53 includes a tube portion 81, an upper surface portion 82, and a lower surface portion 83.

[0063] The tubular portion 81 is a cylindrical portion that covers the side surface of the rail 51. The tubular portion 81 covers the side surface of the rail 51, particularly the rail groove 51a, and is therefore necessary to suppress the accumulation of lint in the rail groove 51a. However, it is not essential that the tubular portion 81 covers the entire rail groove 51a, and it may cover only a portion of the rail groove 51a (for example, an area of ​​the rail groove 51a where lint is likely to accumulate, or an area where the sliding portion 52 frequently slides). Furthermore, the tubular portion 81 in this embodiment has a circular or elliptical cross section, but may also have a rectangular cross section.

[0064] The upper surface portion 82 is a portion located at the upper end of the tube portion 81, and is a portion that closes the upper surface of the cover 53. The upper surface portion 82 covers the upper part of the rail 51. In this embodiment, lint is scattered from the spinning device 3, and the spinning device 3 is located above the rail 51. Therefore, by providing the upper surface portion 82, it is easy to prevent the lint coming from above from accumulating on the rail 51. Note that the upper surface portion 82 is not an essential component and can be omitted.

[0065] The bottom surface portion 83 is a portion located at the lower end of the tube portion 81, and is a portion that closes the bottom surface of the cover 53. The bottom surface portion 83 covers the lower portion of the rail 51. Since lint is light, it can be stirred up in the air by even a slight air current. Therefore, by providing the bottom surface portion 83, it is easy to prevent the lint that is stirred up in the air and arrives from below from accumulating on the rail 51. Note that the top surface portion 82 is not an essential component and can be omitted.

[0066] The tubular portion 81 has a slit 84 extending in the up-down direction. The slit 84 is a portion that separates the tubular portion 81 so that it can be opened and closed. In this embodiment, the slit 84 is provided so as to continue from the upper end to the lower end of the tubular portion 81. However, the slit 84 may be provided only in a portion of the tubular portion 81 in the up-down direction.

[0067] The cover 53 is further provided with an opening / closing mechanism 85 that opens and closes the slit 84 to form an open portion 86 and a closed portion 87 in the cover 53. The opening / closing mechanism 85 in this embodiment is a fastener mechanism (more specifically, a linear fastener mechanism). The opening / closing mechanism 85 includes a first member 91, a second member 92, and an opening / closing member 93.

[0068] The first member 91 is a protrusion (element) provided on one side (hereinafter, the first side) of the portion separated into two by the slit 84. The second member 92 is a protrusion (element) provided on the other side (hereinafter, the second side) of the portion separated into two by the slit 84. The first member 91 and the second member 92 are each provided along the slit 84. The first member 91 and the second member 92 are connectable. The area where the first member 91 and the second member 92 are connected corresponds to the closed portion 87, and the area where they are not connected (the area where they are separated) corresponds to the open portion 86.

[0069] The opening / closing member 93 is movable along the slit 84. The opening / closing member 93 passes through, whereby the first member 91 and the second member 92 can be connected, or the connection between the first member 91 and the second member 92 can be released. In detail, the opening / closing member 93 passes through a range where the first member 91 and the second member 92 are not connected, whereby the first member 91 and the second member 92 can be connected. The opening / closing member 93 passes through a range where the first member 91 and the second member 92 are connected, whereby the connection between the first member 91 and the second member 92 can be released.

[0070] In this embodiment, two opening / closing members 93 are arranged for one slit 84. As a result, the area sandwiched between the two opening / closing members 93 becomes an open portion 86, and the remaining portion becomes a closed portion 87. As shown in FIG. 5, a part of the sliding portion 52 is exposed to the outside of the cover 53 through the open portion 86. Specifically, of the sliding portion 52, a part of the connecting member 52c and the entire hanging member 52d are exposed to the outside of the cover 53. Being exposed to the outside means that it is not covered by the cover 53, and for example, means that there is a part that protrudes outward from the cover 53 in a plan view or a side view.

[0071] Of the slide portion 52, the portion that passes through the boundary between the inside and outside of the cover 53 is the connecting member 52c. It is preferable that the portion that passes through the boundary between the inside and outside of the cover 53 is small in size in the vertical and width directions. This is because the size of the open portion 86 can be made small, making it difficult for lint to get inside the cover 53. In this regard, in this embodiment, the connecting member 52c is small in size in the vertical direction and in size in the width direction compared to other portions (slide block 52b, hanging member 52d). The width direction is a direction perpendicular to the vertical direction and perpendicular to the direction connecting the inside and outside of the cover 53.

[0072] Of the two opening / closing members 93, the opening / closing member 93 arranged on the upper side is fixed to the upper surface of the slide portion 52 (more specifically, the connecting member 52c). The opening / closing member 93 arranged on the lower side is fixed to the lower surface of the slide portion 52 (more specifically, the connecting member 52c). There are various fixing methods, but for example, the operation piece of the opening / closing member 93 and the connecting member 52c may be fixed via a relay member. Also, the operation piece of the opening / closing member 93 may be changed to a dedicated large operation piece, and this operation piece may be directly fixed to the connecting member 52c.

[0073] The boundary between the open portion 86 and the closed portion 87 formed by the opening / closing member 93 arranged on the upper side is referred to as the upper boundary. The boundary between the open portion 86 and the closed portion 87 formed by the opening / closing member 93 arranged on the lower side is referred to as the lower boundary. Now, consider a situation in which the sliding portion 52 descends from the first height shown in Fig. 5 to the second height shown in Fig. 6.

[0074] As the sliding portion 52 descends, the upper opening / closing member 93 descends together with the sliding portion 52. As a result, the upper boundary descends together with the sliding portion. As the sliding portion 52 descends, the lower opening / closing member 93 also descends together with the sliding portion 52. As a result, the lower boundary also descends together with the sliding portion. The same is true when the sliding portion 52 ascends.

[0075] That is, in this embodiment, the open portion 86 moves integrally with the slide portion 52. This allows the slide portion 52 (i.e., the thread holding portion 54) to slide up and down while covering the rail 51 with the cover 53 and further reducing the range of the open portion 86. By reducing the size of the open portion 86, the amount of lint that enters through the open portion 86 can be reduced. This allows the frequency of maintenance to be reduced.

[0076] In this embodiment, a linear fastener mechanism is used as the opening / closing mechanism 85, but this is only one example, and other opening / closing mechanisms 85 as described below can be used.

[0077] For example, a sealing structure used in a resin bag with a zipper can be used as the opening / closing mechanism 85. The first member of this sealing structure is provided on the first side separated by a slit and includes a groove along the slit. The second member is provided on the second side separated by the slit and includes a protrusion that fits into the groove. The opening / closing member is provided across the first member and the second member, and can connect the first member and the second member by moving it along the slit. In this type of sealing structure, the opening / closing member is used to connect the first member and the second member, but is not used to release the connection. Therefore, the sliding portion 52 contacts and presses the connecting portion of the first member and the second member when sliding, thereby releasing the connection between the first member and the second member. As a result, the upper boundary and the lower boundary of the cover 53 can be moved together with the sliding of the sliding portion 52. The configuration is the same as that of the above embodiment except for the above-mentioned opening / closing mechanism.

[0078] As another configuration, for example, a magnet sheet mechanism can be used as the opening / closing mechanism 85. The magnet sheet mechanism is a configuration in which two parts are connected using a sheet-shaped magnet. When the magnet sheet mechanism is used, the first member is a magnet sheet provided on the first side separated by a slit and provided along the slit. The second member is a magnet sheet provided on the second side separated by a slit and provided along the slit. In the magnet sheet mechanism, the first member and the second member are joined by simply bringing the first member and the second member close to each other. Therefore, in the magnet sheet mechanism, the opening / closing member is not an essential component. The first member and the second member are configured to be joined together in the initial position. Then, as the slide portion 52 slides, the slide portion 52 comes into contact with the joint between the first member and the second member, and the first member and the second member are separated from each other. Also, as the slide portion 52 moves away from the part where the first member and the second member are separated from each other, the first member and the second member return to their initial positions, and the first member and the second member are joined together. In this manner, the upper and lower boundaries of the cover 53 can be moved together with the sliding of the sliding portion 52. Note that the configuration other than the above-mentioned opening and closing mechanism is the same as that of the above-mentioned embodiment.

[0079] In this embodiment, both the upper boundary and the lower boundary are moved together with the sliding of the sliding portion 52. Here, moving the upper boundary together with the sliding portion 52 is a relatively important point considering that lint falls from above. On the other hand, moving the lower boundary together with the sliding portion 52 is relatively less important considering the direction from which the lint arrives and the fact that the open portion 86 below the sliding portion 52 is slightly covered by the sliding portion 52 itself. Therefore, the configuration for moving the lower boundary (i.e., the configuration for providing a lower opening / closing member 93 and fixing it to the sliding portion 52) may be omitted.

[0080] As described above, the yarn unloading device 5 of this embodiment unloads the yarn Y from the second floor where the spinning device 3 that spins the yarn Y is provided to the first floor where the winding device 7 that winds the yarn Y is provided. The yarn unloading device 5 includes a yarn holding unit 54, a rail 51, a slide unit 52, and a cover 53. The yarn holding unit 54 holds the yarn Y spun by the spinning device 3. The rail 51 is provided to extend vertically from the first floor to the second floor. The slide unit 52 is connected to the yarn holding unit 54 and slides along the rail 51 together with the yarn holding unit 54. The cover 53 covers at least a part of the side surface of the rail 51. The cover 53 is provided with a slit 84 and an opening / closing mechanism 85. The slit 84 extends vertically. The opening / closing mechanism 85 opens and closes the slit 84 to form an open portion 86 and a closed portion 87 in the cover 53. At least a part of the sliding portion 52 is exposed to the outside of the cover 53 through the open portion 86 of the cover 53. When the boundary between the open portion 86 for exposing the sliding portion 52 and the closed portion 87 above it is referred to as the upper boundary, as the sliding portion 52 slides, the sliding portion 52 acts on the opening / closing mechanism 85, and the upper boundary moves together with the sliding portion 52.

[0081] As a result, the upper boundary moves following the sliding of the sliding portion 52, so that an open portion 86 is unlikely to be generated above the sliding portion 52. As a result, lint is unlikely to accumulate on the rail 51, so that the frequency of maintenance of the rail 51 can be reduced.

[0082] In the thread unloading device 5 of this embodiment, when the boundary between the open portion 86 for exposing the sliding portion 52 and the closed portion 87 below it is referred to as the lower boundary, when the sliding portion 52 slides, the sliding portion 52 acts on the opening and closing mechanism 85, and the lower boundary moves together with the sliding portion 52.

[0083] As a result, the lower boundary moves following the sliding of the sliding portion 52, so that an open portion is less likely to be generated below the sliding portion 52. As a result, lint is less likely to accumulate on the rail 51, so that the frequency of maintenance of the rail 51 can be further reduced.

[0084] In the thread unloading device 5 of this embodiment, the cover 53 is cylindrical and has a closed top.

[0085] This makes it difficult for lint to enter from the upper surface of cover 53. As a result, lint is further prevented from accumulating on rail 51, so that the frequency of maintenance of rail 51 can be further reduced.

[0086] In the thread unloading device 5 of this embodiment, the slit 84 in the cover 53 continues from the upper end to the lower end of the cover 53.

[0087] This makes it possible to accommodate even a wide movable range of the slide portion 52.

[0088] The thread unloading device 5 of the present embodiment includes a fixing member 55 that connects the rail 51 to the base body 9b to fix the rail 51. The cover 53 has an opening 89 in a portion other than the slit 84. The fixing member 55 connects the rail 51 to the base body 9b through the opening 89.

[0089] This makes it possible to both fix the rail 51 and prevent the accumulation of lint on the rail 51.

[0090] In the yarn unloading device 5 of this embodiment, the opening and closing mechanism 85 includes a first member 91, a second member 92, and an opening and closing member 93. The first member 91 is provided along the slit 84 at the first side portion separated by the slit 84. The second member 92 is provided along the slit 84 at the second side portion separated by the slit 84. The opening and closing member 93 connects the first member 91 and the second member 92. The opening and closing member 93 is fixed to the sliding portion 52, and the opening and closing member 93 and the sliding portion move together.

[0091] This makes it possible to easily realize a configuration in which the upper boundary moves as the sliding portion 52 slides. In the yarn unloading device 5 of this embodiment, the opening / closing mechanism 85 includes a first member 91 and a second member 92. The first member 91 is provided along the slit 84 at a portion of the first side separated by the slit 84. The second member 92 is provided along the slit 84 at a portion of the second side separated by the slit 84, and is joinable to the first member 91. The first member 91 and the second member 92 are separated by the slide portion coming into contact with the joining portion of the first member 91 and the second member 92. The first member 91 and the second member 92 are joined by the slide portion moving away from the joining portion of the first member 91 and the second member 92.

[0092] This makes it possible to more easily realize a configuration in which the upper boundary moves in conjunction with the sliding of the sliding portion 52. [Explanation of symbols]

[0093] 1. Spinning and winding equipment 5. Thread unloading device 50 Lifting mechanism 51 Rail 52 Slide section 53 Cover 54 Thread holder 81 Cylinder part 82 Top part 83 Bottom part 84 Break 85 Opening and closing mechanism 86 Open part 87 Closed part

Claims

1. A yarn unloading device that unloads a yarn from a second level where a spinning device that spins yarn is provided to a first level where a winding device that winds the yarn is provided, A yarn holding unit that holds the yarn spun by the spinning device; A rail extending vertically from the first floor to the second floor; a slide portion connected to the thread holding portion and sliding along the rail together with the thread holding portion; A cover that covers at least a portion of the side surface of the rail; Equipped with The cover includes: A slit extending in the vertical direction; an opening / closing mechanism for opening and closing the slit to form an open portion and a closed portion in the cover; There is a system in place, At least a portion of the slide portion is exposed to the outside of the cover through the opening of the cover, When the boundary between the opening portion for exposing the sliding portion and the closing portion above it is called the upper boundary, A thread unloading device, characterized in that, as the slide portion slides, the slide portion acts on the opening and closing mechanism and the upper boundary moves together with the slide portion.

2. The yarn unloading device according to claim 1, When the boundary between the open portion for exposing the slide portion and the closed portion below it is referred to as a lower boundary, A thread unloading device, characterized in that, as the slide portion slides, the slide portion acts on the opening and closing mechanism and the lower boundary moves together with the slide portion.

3. The yarn unloading device according to claim 1 or 2, The thread unloading device is characterized in that the cover is cylindrical and has a closed top.

4. A yarn unloading device according to any one of claims 1 to 3, A thread unloading device, wherein the slit in the cover is continuous from the top end to the bottom end of the cover.

5. A yarn unloading device according to any one of claims 1 to 4, a fixing member that connects the rail to a base body and fixes the rail; The cover has an opening in a portion other than the cut, The thread unloading device is characterized in that the fixing member connects the rail and the base body through the opening.

6. A yarn unloading device according to any one of claims 1 to 5, The opening and closing mechanism includes: a first member provided along the cut in a portion of the first side separated by the cut; A second member provided along the cut in a portion of a second side separated by the cut; an opening / closing member that connects the first member and the second member; Equipped with The thread unloading device is characterized in that the opening and closing member is fixed to the slide portion, and the opening and closing member and the slide portion move integrally.

7. A yarn unloading device according to any one of claims 1 to 5, The opening and closing mechanism includes: a first member provided along the cut in a portion of the first side separated by the cut; a second member provided along the cut in a second side portion separated by the cut and joinable to the first member; Equipped with When the slide portion comes into contact with a joint between the first member and the second member, the first member and the second member are separated from each other, A thread unloading device, characterized in that the first member and the second member are joined together when the slide portion moves away from the separation point between the first member and the second member.

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