Bobbin conveying device

Abstract

A bobbin delivery device (10) is provided. The bobbin conveying device (10) comprises a first conveying part (11) for carrying out bobbin transfer operation, an exchanger for carrying out bobbin exchange operation, a hanger detection part (16) for detecting whether a hanger (H) exists at an exchange position (C) and whether the hanger type exists, a bobbin detection part (17) for detecting whether a bobbin (B) exists, and a control part (20) for controlling the first conveying part (11) based on the detection results of the detection parts (16, 17). And a control unit for the exchanger. The control part enables a carriage of the first conveying part (11) to move in a circling mode in a state that the exchanger does not perform the bobbin exchange operation before the bobbin receiving operation is performed, and determines whether the bobbin (B) is hung on the full yarn bobbin hanging bracket (Hf) or not based on the detection result of the detection parts (16, 17) in the circling movement, and performs the bobbin receiving operation on the full yarn bobbin hanging bracket (Hf) after the bobbin receiving operation is performed on the full yarn bobbin hanging bracket (Hf). When it is determined that the bobbin (B) is hung on the hanger (Hf) for the full yarn bobbin, the control unit determines that a hanging error of hanging the bobbin (B) relative to the hanger (H) has occurred.

Description

Technical Field

[0001] The present invention relates to a bobbin conveying device. Background Art

[0002] The bobbin conveying device conveys bobbins wound with roving, i.e., full bobbins, and bobbins without roving wound thereon, i.e., empty bobbins, between a roving frame and a ring spinning frame. The bobbin conveying device includes a first conveying unit, a second conveying unit, an exchanger, and a control unit. The first conveying unit has an annular track, a carriage capable of moving along the annular track, and a plurality of hanging frames suspended from the carriage. The hanging frames are used in the form of full-bobbin hanging frames for hanging full bobbins or empty-bobbin hanging frames for hanging empty bobbins. The full-bobbin hanging frames and the empty-bobbin hanging frames are alternately arranged. The first conveying unit performs a bobbin transfer operation of receiving a full bobbin from the roving frame into the full-bobbin hanging frame and delivering an empty bobbin from the empty-bobbin hanging frame to the roving frame. The second conveying unit is connected to the ring spinning frame. The exchanger performs a bobbin exchange operation of exchanging full bobbins and empty bobbins between the first conveying unit and the second conveying unit. The control unit controls the first conveying unit and the exchanger.

[0003] In such a bobbin conveying device, when an empty bobbin is erroneously hung on a full-bobbin hanging frame, the empty bobbin erroneously hung on the full-bobbin hanging frame contacts the full bobbin of the roving frame during the bobbin transfer operation. Such contact between the bobbins during the bobbin transfer operation may cause failure of the bobbin transfer operation and malfunctions of the roving frame and the bobbin conveying device. Therefore, it is desired that no bobbin is hung on the full-bobbin hanging frame before the bobbin transfer operation.

[0004] When the exchanger properly performs the bobbin exchange operation, no bobbin is hung on the full-bobbin hanging frame after the bobbin exchange operation. Therefore, in the conventional bobbin conveying device, by confirming that the exchanger properly performs the bobbin exchange operation, it is ensured that no bobbin is hung on the full-bobbin hanging frame before the bobbin transfer operation. As a structure for confirming that the exchanger properly performs the bobbin exchange operation, for example, the following structure can be considered. The bobbin conveying device includes a hanging frame detection unit and a bobbin detection unit. In the circumferential direction of the annular track, the position where the exchanger performs the bobbin exchange operation is defined as the exchange position. The hanging frame detection unit detects the presence or absence of a hanging frame at the exchange position, and when it detects the presence of a hanging frame at the exchange position, it detects whether the hanging frame is a full-bobbin hanging frame or an empty-bobbin hanging frame. When the hanging frame detection unit detects the presence of a hanging frame at the exchange position, the bobbin detection unit detects the presence or absence of a bobbin.

[0005] In such a bobbin conveying device, if a full-bobbin hanger after the bobbin handover operation conveys the full-bobbin to the exchange position, the hanger detection unit detects that there is a hanger at the exchange position and detects that the hanger is a full-bobbin hanger. Then, if the exchanger properly hands over the full-bobbin from the full-bobbin hanger at the exchange position to the second conveying unit, the detection result of the bobbin detection unit for the full-bobbin hanger changes from "there is a bobbin" to "there is no bobbin". In addition, if an empty-bobbin hanger after the bobbin handover operation conveys the empty-bobbin to the exchange position, the hanger detection unit detects that there is a hanger at the exchange position and detects that the hanger is an empty-bobbin hanger. Then, if the exchanger properly hands over the empty-bobbin from the second conveying unit to the empty-bobbin hanger at the exchange position, the detection result of the bobbin detection unit for the empty-bobbin hanger changes from "there is no bobbin" to "there is a bobbin". The control unit confirms that the exchanger has properly performed the bobbin exchange operation based on the detection results of such a hanger detection unit and a bobbin detection unit. That is, the hanger detection unit and the bobbin detection unit are detection units used to confirm that the exchanger has properly performed the bobbin exchange operation.

[0006] In addition, Patent Document 1 discloses a bobbin conveying device that detects whether the bobbin has been properly handed over between the roving frame and the bobbin conveying device. The hanger for the full-bobbin and the hanger for the empty-bobbin are arranged at different heights. The bobbin conveying device has a detection unit for the full-bobbin, and the detection unit for the full-bobbin detects whether there is a bobbin hung on the hanger for the full-bobbin. The detection unit for the full-bobbin has: a projector that projects light in the longitudinal direction of the roving frame and a light receiver that is arranged opposite to the projector in the longitudinal direction of the roving frame. When the light receiver detects the light projected by the projector, the detection unit for the full-bobbin determines that there is no bobbin hung on the hanger for the full-bobbin. By adopting this bobbin conveying device, it is also possible to detect whether an empty-bobbin is wrongly hung on the hanger for the full-bobbin.

[0007] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2000-27041

[0008] However, in the case of a failure of the exchanger or the like, there is a situation where an operator performs an exchange operation of exchanging the bobbin on the hanger with respect to the first conveying unit instead of the exchanger. In this case, after the operator visually observes and confirms that there is no bobbin hung on the hanger for the full-bobbin, the first conveying unit is operated. However, there may be a situation of overlooking during the confirmation based on visual observation. In addition, if the bobbin conveying device described in Patent Document 1 is adopted, although it is possible to detect whether there is a bobbin hung on the hanger for the full-bobbin, a new detection unit needs to be additionally provided. Based on the above, it is desired to detect the hanging error of the bobbin hung on the hanger by the operator without newly adding a detection unit. Summary of the Invention

[0009] The bobbin conveying device for solving the above problems is a bobbin conveying device that conveys bobbins wound with roving, i.e., full bobbins, and bobbins without the above-mentioned roving wound thereon, i.e., empty bobbins, between the roving frame and the spinning frame. The main idea is to include: a first conveying part, which has an annular track, a carriage capable of moving along the above-mentioned annular track, and a plurality of hanging frames used in the form of hanging frames for the full bobbins for hanging the above-mentioned full bobbins or hanging frames for the empty bobbins for hanging the above-mentioned empty bobbins, the hanging frames for the full bobbins and the hanging frames for the empty bobbins are alternately arranged, and a bobbin transfer action of receiving the above-mentioned full bobbins from the roving frame onto the hanging frames for the full bobbins and delivering the above-mentioned empty bobbins from the hanging frames for the empty bobbins to the roving frame is performed; a second conveying part, which is connected to the above-mentioned spinning frame; an exchanger, which performs a bobbin exchange action of exchanging the above-mentioned full bobbins and the above-mentioned empty bobbins between the above-mentioned first conveying part and the above-mentioned second conveying part; a hanging frame detection part, when the position where the exchanger performs the above-mentioned bobbin exchange action in the circumferential direction of the above-mentioned annular track is set as the exchange position, this hanging frame detection part detects whether there is the above-mentioned hanging frame at the above-mentioned exchange position, and when it is detected that the above-mentioned hanging frame exists at the above-mentioned exchange position, this hanging frame detection part detects whether the above-mentioned hanging frame is a hanging frame for the full bobbins or a hanging frame for the empty bobbins; a bobbin detection part, when the above-mentioned hanging frame detection part detects that the above-mentioned hanging frame exists at the above-mentioned exchange position, this bobbin detection part detects the presence or absence of the above-mentioned bobbin; and a control part, which controls the above-mentioned first conveying part and the above-mentioned exchanger based on the detection results of the above-mentioned hanging frame detection part and the above-mentioned bobbin detection part. For the above-mentioned control part, before performing the above-mentioned bobbin transfer action, the above-mentioned control part makes the carriage move around in a state where the above-mentioned exchanger does not perform the above-mentioned bobbin exchange action, and based on the detection results of the above-mentioned hanging frame detection part and the above-mentioned bobbin detection part during the circumferential movement of the above-mentioned carriage, the above-mentioned control part determines whether the above-mentioned bobbin is hung on the hanging frame for the full bobbins. When the above-mentioned bobbin is hung on the hanging frame for the full bobbins, the above-mentioned control part determines that a hanging error of hanging the above-mentioned bobbin on the above-mentioned hanging frame has occurred.

[0010] Before performing the bobbin transfer operation, the control unit moves the carriage around in a state where the exchanger has not performed the bobbin exchange operation. For the control unit, based on the detection results of the hanger detection unit and the bobbin detection unit during the circumferential movement of the carriage, it determines whether a bobbin is hung on the hanger for the full-bobbin. When the operator properly performs the exchange operation of exchanging the bobbin on the hanger with respect to the first conveyor, no empty bobbin is hung on the hanger for the full-bobbin. Therefore, when it is determined that a bobbin is hung on the hanger for the full-bobbin, the control unit regards that an empty bobbin is erroneously hung on the hanger for the full-bobbin and determines that a hanging error has occurred in hanging the bobbin on the hanger. When determining whether a bobbin is hung on the hanger for the full-bobbin, the control unit uses the hanger detection unit and the bobbin detection unit. The hanger detection unit and the bobbin detection unit are existing detection units used to confirm that the exchanger has properly performed the bobbin exchange operation. Therefore, it is possible to check for hanging errors in hanging the bobbin on the hanger made by the operator without newly adding a detection unit.

[0011] Alternatively, in the above-described bobbin conveying device, the control unit determines whether a bobbin is hung on the hanger for the empty bobbin based on the detection results of the hanger detection unit and the bobbin detection unit during the circumferential movement of the carriage. When no bobbin is hung on the hanger for the empty bobbin, the control unit also determines that a hanging error has occurred in hanging the bobbin on the hanger.

[0012] The control unit determines whether a bobbin is hung on the hanger for the empty bobbin based on the detection results of the hanger detection unit and the bobbin detection unit during the circumferential movement of the carriage. When the operator properly performs the exchange operation of exchanging the bobbin on the hanger with respect to the first conveyor, an empty bobbin is hung on the hanger for the empty bobbin. Therefore, when it is determined that no bobbin is hung on the hanger for the empty bobbin, the control unit also regards that the empty bobbin has been forgotten to be hung on the hanger for the empty bobbin and determines that a hanging error has occurred in hanging the bobbin on the hanger. When determining whether a bobbin is hung on the hanger for the empty bobbin, the control unit uses the existing detection units, namely, the hanger detection unit and the bobbin detection unit. Therefore, it is possible to detect the forgotten hanging of the empty bobbin on the hanger for the empty bobbin made by the operator without newly adding a detection unit.

[0013] Alternatively, in the above-described bobbin conveying device, when it is determined that a hanging error has occurred in hanging the bobbin on the hanger, the control unit restricts the bobbin transfer operation performed by the first conveyor.

[0014] According to the above structure, even when an empty bobbin is erroneously hung on the hanger for the full-bobbin, it is possible to avoid the situation where the empty bobbin hung on the hanger for the full-bobbin contacts the full-bobbin of the roving frame during the bobbin transfer operation.

[0015] Alternatively, in the above bobbin conveying device, the hanger detection unit and the bobbin detection unit perform detection during the conveyance of the bobbin by the carriage.

[0016] According to the above structure, compared with the case where the hanger is stopped at the exchange position every time the hanger is conveyed to the exchange position, the time required for checking for hanging errors in which the bobbin is hung on the hanger can be shortened.

[0017] According to the present invention, it is possible to detect hanging errors made by an operator in hanging a bobbin on a hanger without newly adding a detection unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top view showing a roving frame, a spinning frame, and a bobbin conveying device.

[0019] Figure 2 It is a side view showing the roving frame and the first conveying unit before the bobbin transfer operation.

[0020] Figure 3 It is a side view showing the roving frame and the first conveying unit before the bobbin transfer operation.

[0021] Figure 4 It is a top view showing the roving frame and the first conveying unit after the bobbin transfer operation.

[0022] Figure 5 It is a side view showing the roving frame and the first conveying unit after the bobbin transfer operation.

[0023] Figure 6 It is a top view showing the bobbin conveying device.

[0024] Figure 7 It is a top view showing the bobbin conveying device.

[0025] Figure 8 It is a side view showing the hanger detection unit and the bobbin detection unit.

[0026] Figure 9 It is a top view showing the roving frame and the first conveying unit when receiving a full bobbin.

[0027] Figure 10 It is a side view showing the roving frame and the first conveying unit after receiving a full bobbin.

[0028] Figure 11 It is a side view showing the roving frame and the first conveying unit after receiving a full bobbin.

[0029] Figure 12 It is a top view showing the roving frame and the first conveying unit when delivering an empty bobbin.

[0030] Figure 13 It is a side view of the roving frame and the first conveying unit when the empty bobbin is delivered.

[0031] Figure 14 It is a side view of the roving frame and the first conveying unit after the empty bobbin is delivered.

[0032] Figure 15 It is a side view of the roving frame and the first conveying unit after the empty bobbin is delivered.

[0033] Figure 16 It is an explanatory diagram for explaining the inspection of the incorrect hanging of the bobbin.

[0034] Figure 17 It is an explanatory diagram for explaining the inspection of the incorrect hanging of the bobbin. Detailed implementation manner

[0035] Hereinafter, according to Figures 1 to 17 An embodiment for embodying the bobbin conveying device will be described.

[0036] As Figure 1 As shown, in a textile factory, a roving frame 100, a spinning frame 200, and a bobbin conveying device 10 are provided. The roving frame 100 performs the roving process. The spinning frame 200 performs the spinning process. The bobbin conveying device 10 conveys the bobbin B between the roving frame 100 and the spinning frame 200.

[0037] <Roving frame>

[0038] As Figure 1 and Figure 2 As shown, the roving frame 100 includes a roving frame main body 101 and a track conveying unit 102.

[0039] The roving frame main body 101 has a machine table 21 and a bobbin track 23. The machine table 21 has a plurality of flyer frames 22 extending downward. Although not shown, the plurality of flyer frames 22 are arranged in the longitudinal direction of the machine table 21 so as to be located at different positions in the short side direction of the machine table 21. The bobbin track 23 has a plurality of bobbin wheels 24. Similar to the flyer frames 22, the plurality of bobbin wheels 24 are arranged in the longitudinal direction of the machine table 21 so as to be located at different positions in the short side direction of the machine table 21. The bobbin wheels 24 project from the upper surface of the bobbin track 23. The bobbin wheels 24 are provided so as to be rotatable relative to the bobbin track 23. The bobbin wheels 24 support the bobbin B so as to be rotatable.

[0040] The bobbin track 23 can be lifted and lowered in the vertical direction between a roving position where the bobbin B is located inside the flyer frame 22 and a non-roving position where the bobbin B is located below the flyer frame 22. In addition, Figure 2In the figure, the bobbin rail 23 is shown in the non-worsted position. When the bobbin rail 23 is in the worsted position, the roving delivered from the machine stand 21 is wound around the rotating bobbin B. Hereinafter, the bobbin B wound with roving is referred to as the full bobbin Bf, and the bobbin B without roving wound thereon is referred to as the empty bobbin Be. When the bobbin B becomes the full bobbin Bf, the bobbin rail 23 descends from the worsted position to the non-worsted position.

[0041] The rail conveying unit 102 can reciprocate in the short side direction of the machine stand 21 between the lower side of the flyer 22 and the lower side of the first conveying unit 11 described below. When the bobbin rail 23 is in the non-worsted position, the bobbin rail 23 is placed on the rail conveying unit 102. The rail conveying unit 102 conveys the bobbin rail 23 from below the flyer 22 to below the first conveying unit 11 by moving in the direction away from the machine stand 21. The rail conveying unit 102 conveys the bobbin rail 23 from below the first conveying unit 11 toward below the flyer 22 by moving in the direction approaching the machine stand 21. Additionally, Figure 2 In the figure, the bobbin rail 23 and the rail conveying unit 102 located below the flyer 22 are shown.

[0042] <Structure of the Bobbin Conveying Device>

[0043] As Figure 1 shown, the bobbin conveying device 10 includes a first conveying unit 11, a second conveying unit 12, an exchanger 13, a receiving position sensor 14, a delivery position sensor 15, a hanger detection unit 16, a bobbin detection unit 17, and a control unit 18.

[0044] As Figures 1 to 3 shown, the first conveying unit 11 has an annular rail 31, a carriage 32, and a plurality of hangers H.

[0045] The annular rail 31 is in the shape of a runway. The annular rail 31 has a first straight portion 31a, a second straight portion 31b, a first arc portion 31c, and a second arc portion 31d. The first straight portion 31a and the second straight portion 31b extend along the long side direction of the machine stand 21. The first arc portion 31c connects one end of the first straight portion 31a to one end of the second straight portion 31b, and the second arc portion 31d connects the other end of the first straight portion 31a to the other end of the second straight portion 31b. The annular rail 31 is supported by a support column 33. The annular rail 31 can be lifted and lowered in the vertical direction.

[0046] The carriage 32 is installed on the lower surface of the annular rail 31. The carriage 32 can move along the annular rail 31. The moving direction X of the carriage 32 is only Figure 1 the one direction indicated by the arrow in the figure. A detected portion 32a is provided at the leading end portion in the moving direction X of the carriage 32.

[0047] As Figure 2and Figure 3 As shown, a plurality of hanging frames H are suspended from the carriage 32. The plurality of hanging frames H are arranged in a row along the annular track 31. By moving the carriage 32, the plurality of hanging frames H are conveyed along the annular track 31. In other words, the carriage 32 conveys the plurality of hanging frames H along the annular track 31. Therefore, the moving direction X of the carriage 32 is also the conveying direction of the hanging frame H.

[0048] The hanging frame H is used in the form of a full bobbin tube hanging frame Hf for hanging a full bobbin tube Bf or an empty bobbin tube hanging frame He for hanging an empty bobbin tube Be. In the moving direction X of the carriage 32, the leading hanging frame H is used in the form of a full bobbin tube hanging frame Hf. The second hanging frame H is used in the form of an empty bobbin tube hanging frame He. The third hanging frame H is used in the form of a full bobbin tube hanging frame Hf. The fourth hanging frame H is used in the form of an empty bobbin tube hanging frame He. In this way, the odd-numbered hanging frames H are used in the form of full bobbin tube hanging frames Hf. In addition, the even-numbered hanging frames H are used in the form of empty bobbin tube hanging frames He. Therefore, the full bobbin tube hanging frames Hf and the empty bobbin tube hanging frames He are alternately arranged.

[0049] The positional relationship between each hanging frame H of the first conveying unit 11 and each bobbin wheel 24 of the bobbin track 23 is determined according to the position of the carriage 32 relative to the annular track 31.

[0050] As Figure 1 and Figure 3 shown, the position of the carriage 32 relative to the annular track 31 when the position of each full bobbin tube hanging frame Hf in the long side direction of the machine table 21 coincides with the position of each bobbin wheel 24 in the long side direction of the machine table 21 is set as the receiving position D1. When the carriage 32 is located at the receiving position D1, the detected portion 32a of the carriage 32 is in the middle of the first straight portion 31a of the annular track 31.

[0051] As Figure 4 shown, the position of the carriage 32 relative to the annular track 31 when the position of each empty bobbin tube hanging frame He in the long side direction of the machine table 21 coincides with the position of each bobbin wheel 24 in the long side direction of the machine table 21 is set as the delivery position D2. When the carriage 32 is located at the delivery position D2, the detected portion 32a of the carriage 32 is in the middle of the first straight portion 31a of the annular track 31. Specifically, the detected portion 32a when the carriage 32 is located at the delivery position D2 is at a position closer to the first arc portion 31c side than the detected portion 32a when the carriage 32 is located at the receiving position D1.

[0052] The first conveying unit 11 performs a bobbin handover operation with the roving frame 100. Specifically, the first conveying unit 11 receives the full-bobbin Bf from the roving frame 100 onto the full-bobbin hanging bracket Hf. In addition, the first conveying unit 11 delivers the empty bobbin Be from the empty-bobbin hanging bracket He to the roving frame 100. The first conveying unit 11 of the present embodiment performs a bobbin handover operation with the bobbin track 23 conveyed by the track conveying unit 102 to below the first conveying unit 11.

[0053] As Figure 6 and Figure 7 shown, the second conveying unit 12 includes a track main body 12a, a hanging bracket conveying unit 12b, and a plurality of hanging brackets H. Although not shown, the track main body 12a is annular. A part of the track main body 12a in the circumferential direction is connected to the ring spinning frame 200. Therefore, the second conveying unit 12 is connected to the ring spinning frame 200. The hanging bracket conveying unit 12b can move along the track main body 12a. A plurality of hanging brackets H are suspended from the hanging bracket conveying unit 12b. The hanging bracket conveying unit 12b conveys the plurality of hanging brackets H by moving along the track main body 12a. Thus, the bobbin B hung at the hanging bracket H of the second conveying unit 12 is conveyed by the second conveying unit 12.

[0054] The exchanger 13 is provided between the first conveying unit 11 and the second conveying unit 12. Specifically, the exchanger 13 is provided on the side of the first arc portion 31c of the annular track 31.

[0055] The exchanger 13 of the present embodiment has a rotating shaft 41 and an exchange portion 42 that rotates integrally with the rotating shaft 41. The exchanger 13 can be lifted and lowered in the vertical direction. The exchange portion 42 includes a substrate 420, a first plate 421, and a second plate 422. The substrate 420 is rectangular. The rotating shaft 41 is inserted through the center in the long side direction of the substrate 420. The first plate 421 is provided at one end portion in the long side direction of the substrate 420, and the second plate 422 is provided at the other end portion in the long side direction of the substrate 420.

[0056] The first plate 421 has a full-bobbin supporting portion 421a for supporting the full-bobbin Bf. The first plate 421 can reciprocate between a non-projecting position on the substrate 420 and a projecting position protruding along the long side direction from one end portion of the substrate 420. The second plate 422 has an empty-bobbin supporting portion 422a for supporting the empty bobbin Be. The second plate 422 can reciprocate between a non-projecting position above the substrate 420 and a projecting position protruding along the long side direction from the other end portion of the substrate 420. In addition, Figure 6 and Figure 7 illustrate the first plate 421 and the second plate 422 in the non-projecting position.

[0057] The exchanger 13 performs a bobbin exchange operation for exchanging full bobbins Bf and empty bobbins Be between the first conveying unit 11 and the second conveying unit 12. Specifically, the exchanger 13 transfers the empty bobbin Be from the hanger H of the second conveying unit 12 to the empty-bobbin hanger He of the first conveying unit 11. In addition, the exchanger 13 transfers the full bobbin Bf from the full-bobbin hanger Hf of the first conveying unit 11 to the hanger H of the second conveying unit 12. Further, the hanger H of the second conveying unit 12 that delivers the full bobbin Bf is the hanger H that has hung the empty bobbin Be delivered to the first conveying unit 11.

[0058] Therefore, among the plurality of hangers H provided in the second conveying unit 12, an empty bobbin Be is hung on the hanger H located upstream of the exchanger 13 in the conveying direction Y of the hanger H. This empty bobbin Be is the empty bobbin Be transferred by the exchanger 13 to the empty-bobbin hanger He of the first conveying unit 11. In addition, a full bobbin Bf is hung on the hanger H located downstream of the exchanger 13 in the conveying direction Y among the plurality of hangers H provided in the second conveying unit 12. This full bobbin Bf is the full bobbin Bf transferred by the exchanger 13 from the full-bobbin hanger Hf of the first conveying unit 11.

[0059] The position where the exchanger 13 performs the bobbin exchange operation in the circumferential direction of the annular track 31 is set as the exchange position C. In the present embodiment, the exchange position C is provided in the middle of the first arc portion 31c.

[0060] As Figure 1 and Figure 4 shown, the receiving position sensor 14 is disposed on the side of the first straight portion 31a of the annular track 31. The receiving position sensor 14 is configured to be able to detect the detected portion 32a of the carriage 32. When the carriage 32 is located at the receiving position D1, the receiving position sensor 14 detects the detected portion 32a.

[0061] At the side of the first straight portion 31a of the annular track 31, the delivery position sensor 15 is provided in parallel with the receiving position sensor 14. The delivery position sensor 15 is located closer to the first arc portion 31c than the receiving position sensor 14. The delivery position sensor 15 is configured to be able to detect the detected portion 32a of the carriage 32. When the carriage 32 is located at the delivery position D2, the delivery position sensor 15 detects the detected portion 32a.

[0062] As Figure 1 and Figure 8As shown, the hanger detection unit 16 is disposed on the side of the exchange position C. In the present embodiment, the hanger detection unit 16 is disposed on the side of the first arc portion 31c. The hanger detection unit 16 detects whether there is a hanger H at the exchange position C. Further, when the hanger detection unit 16 detects that there is a hanger H at the exchange position C, the hanger detection unit 16 detects whether the hanger H is a full bobbin tube hanger Hf or an empty bobbin tube hanger He. In the present embodiment, the hanger detection unit 16 is a single sensor 16a. In other words, in the present embodiment, a single sensor 16a detects whether there is a hanger H at the exchange position C, and when it detects that there is a hanger H at the exchange position C, the single sensor 16a detects whether the hanger H is a full bobbin tube hanger Hf or an empty bobbin tube hanger He.

[0063] Specifically, the sensor 16a is configured to be able to detect the hanger H. When the hanger H is transported to the exchange position C by the carriage 32, the sensor 16a detects that there is a hanger H at the exchange position C. Further, when the sensor 16a detects that there is a hanger H at the exchange position C, it calculates the number of detected hangers H. As described above, the hanger H that is the odd-numbered one from the front in the moving direction X of the carriage 32, that is, in the transport direction of the hanger H, is a full bobbin tube hanger Hf, and the hanger H that is the even-numbered one from the front is an empty bobbin tube hanger He. Therefore, the sensor 16a can detect whether the hanger H located at the exchange position C is a full bobbin tube hanger Hf or an empty bobbin tube hanger He according to which hanger H the detected hanger H is. When the detected hanger H is the odd-numbered hanger H, the sensor 16a detects that the hanger H is a full bobbin tube hanger Hf. When the detected hanger H is the even-numbered hanger H, the sensor 16a detects that the hanger H is an empty bobbin tube hanger He.

[0064] The bobbin detection unit 17 is disposed on the side of the exchange position C of the annular track 31. In the present embodiment, the bobbin detection unit 17 is disposed on the side of the first arc portion 31c. The bobbin detection unit 17 is disposed below the hanger detection unit 16. The bobbin detection unit 17 is configured to be able to detect the bobbin B. When the hanger detection unit 16 detects that there is a hanger H at the exchange position C, the bobbin detection unit 17 detects the presence or absence of the bobbin B. In other words, the bobbin detection unit 17 detects whether a bobbin B is hung on the hanger H located at the exchange position C.

[0065] The control unit 18 includes a processor (not shown) and a storage unit. Examples of the processor include a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), and a DSP (Digital Signal Processor). The storage unit includes a RAM (Random Access Memory) and a ROM (Read Only Memory). The storage unit stores program codes or instructions configured to cause the processor to execute processing. The storage unit, i.e., the computer-readable medium, includes all available media that can be accessed by a general-purpose or a special-purpose computer. Alternatively, the control unit 18 may be configured by a hardware circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array). The control unit 18 as a processing circuit may include one or more processors that operate according to a computer program, one or more hardware circuits such as an ASIC or an FPGA, or a combination thereof.

[0066] The control unit 18 is connected to the receiving position sensor 14, the delivery position sensor 15, the hanger detection unit 16, and the bobbin detection unit 17. The control unit 18 controls the first conveying unit 11 and the exchanger 13 based on the detection results of the receiving position sensor 14, the delivery position sensor 15, the hanger detection unit 16, and the bobbin detection unit 17.

[0067] In the event of a failure of the exchanger 13 or the like, there may be a case where an operator exchanges the bobbin B on the hanger H of the first conveying unit 11 instead of the exchanger 13. In this case, the control unit 18 checks for a hanging error in which the operator hangs the bobbin B on the hanger H of the first conveying unit 11 based on the detection results of the hanger detection unit 16 and the bobbin detection unit 17.

[0068] <Operation of the Bobbin Conveying Device>

[0069] The operation of the bobbin conveying device 10 will be described together with the operation of the roving frame 100.

[0070] Figures 1 to 3 The roving frame 100 after completion of the roving process and the first conveying unit 11 before the bobbin handover operation are shown. The bobbin track 23 of the roving frame 100 is placed on the track conveying unit 102 below the spindle wing 22. Each bobbin wheel 24 supports a full bobbin Bf. The annular track 31 of the first conveying unit 11 is located above the machine table 21. The carriage 32 is located at the receiving position D1. No bobbin B is hung on each hanger Hf for full bobbins. An empty bobbin Be is hung on the hanger He for empty bobbins.

[0071] As Figure 9 shown, the rail conveyor section 102 conveys the bobbin rail 23 below the first conveyor section 11. In this way, each full-bobbin hanger Hf and each bobbin wheel 24 face each other in the vertical direction. Further, while the rail conveyor section 102 conveys the bobbin rail 23 below the first conveyor section 11, the annular rail 31 descends. Thereby, the full-bobbin hanger Hf receives the full bobbin Bf from the bobbin wheel 24.

[0072] As Figure 10 and Figure 11 shown, if the full-bobbin hanger Hf receives the full bobbin Bf from the bobbin wheel 24, the annular rail 31 ascends. The full-bobbin hanger Hf becomes a state in which the full bobbin Bf is hung. On the other hand, the bobbin wheel 24 becomes a state in which the bobbin B is not supported.

[0073] As Figure 12 and Figure 13 shown, the control section 18 moves the carriage 32. Moreover, if the detection section 32a of the carriage 32 is detected by the delivery position sensor 15, the control section 18 stops the carriage 32. Thereby, the carriage 32 stops at the delivery position D2. Each empty-bobbin hanger He and each bobbin wheel 24 face each other in the vertical direction. In this state, the annular rail 31 descends, whereby the empty-bobbin hanger He delivers the empty bobbin Be to the bobbin wheel 24.

[0074] As Figure 14 and Figure 15 shown, if the empty-bobbin hanger He delivers the empty bobbin Be to the bobbin wheel 24, the annular rail 31 ascends. The empty-bobbin hanger He becomes a state in which the bobbin B is not hung. On the other hand, the bobbin wheel 24 becomes a state in which the empty bobbin Be is supported.

[0075] Thereafter, as Figure 4 and Figure 5 shown, the rail conveyor section 102 conveys the bobbin rail 23 from below the first conveyor section 11 to below the flyer 22. If the bobbin rail 23 is conveyed below the flyer 22, it ascends to the roving position. Thereby, the roving machine main body 101 becomes a state in which the roving process can be started. Further, the annular rail 31 ascends to a position above the machine table 21. Thereby, the bobbin transfer operation of the first conveyor section 11 is completed. In the first conveyor section 11 after the bobbin transfer operation, the full bobbin Bf is hung on the full-bobbin hanger Hf. The bobbin B is not hung on the empty-bobbin hanger He.

[0076] As Figure 6As shown, after the bobbin transfer operation is completed, the control unit 18 moves the carriage 32. If the full-bobbin hanger Hf of the hanger H at the head of the first conveying unit 11 is conveyed to the exchange position C, the hanger detection unit 16 detects that the hanger H is present at the exchange position C. If the hanger detection unit 16 detects that the hanger H is present at the exchange position C, the control unit 18 interrupts the movement of the carriage 32. Thus, the full-bobbin hanger Hf stops at the exchange position C. In addition, the hanger detection unit 16 calculates the number of detected hangers H. Since the detected hanger H is the first hanger H, the hanger detection unit 16 detects that the hanger H at the exchange position C is the full-bobbin hanger Hf.

[0077] The first plate 421 of the exchanger 13 is on the side of the first conveying unit 11, and the second plate 422 is on the side of the second conveying unit 12. The control unit 18 moves the first plate 421 and the second plate 422 from the non-projecting position to the projecting position. Then, the first plate 421 moves to the lower side of the full-bobbin hanger Hf at the exchange position C. In addition, the second plate 422 moves to the lower side of the hanger H of the second conveying unit 12 on which the empty bobbin Be is hung. In this state, the control unit 18 raises the exchanger 13. Thus, the full-bobbin support portion 421a receives the full-bobbin Bf from the full-bobbin hanger Hf at the exchange position C. As a result, the full-bobbin hanger Hf of the hanger H at the head does not have a bobbin B hung thereon. On the other hand, the empty-bobbin support portion 422a receives the empty bobbin Be from the hanger H of the second conveying unit 12. As a result, the hanger H adjacent to the exchanger 13 among the plurality of hangers H of the second conveying unit 12 does not have a bobbin B hung thereon.

[0078] If the exchanger 13 properly receives the full-bobbin Bf from the full-bobbin hanger Hf at the exchange position C, the detection result of the bobbin detection unit 17 for this full-bobbin hanger Hf changes from "with bobbin" to "without bobbin". Since the detection result of the bobbin detection unit 17 becomes "without bobbin", the control unit 18 confirms that the exchanger 13 has properly received the full-bobbin Bf from the full-bobbin hanger Hf of the first conveying unit 11. Thereafter, the control unit 18 lowers the exchanger 13 and moves the first plate 421 and the second plate 422 from the projecting position to the non-projecting position. Moreover, the control unit 18 rotates the rotary shaft 41 by half a turn, whereby the exchange unit 42 also rotates by half a turn.

[0079] As Figure 7As shown, the exchanger 13 is in a state where the second plate 422 is on the side of the first conveying unit 11 and the first plate 421 is on the side of the second conveying unit 12. In addition, the control unit 18 starts the movement of the carriage 32 again. When the second hanger H of the first conveying unit 11, that is, the hanger He for empty tubes, is conveyed to the exchange position C, the hanger detection unit 16 detects that there is a hanger H at the exchange position C. If the hanger detection unit 16 detects that there is a hanger H at the exchange position C, the control unit 18 interrupts the movement of the carriage 32. Thus, the hanger He for empty tubes stops at the exchange position C. In addition, the hanger detection unit 16 calculates the number of the detected hangers H. Since the detected hanger H is the second hanger H, the hanger detection unit 16 detects that the hanger H at the exchange position C is the hanger He for empty tubes.

[0080] The control unit 18 moves the first plate 421 and the second plate 422 from the non-projecting position to the projecting position. In this way, the first plate 421 moves to the lower side of the hanger H on the second conveying unit 12 where no bobbin B is hung. In addition, the second plate 422 moves to the lower side of the hanger He for empty tubes located at the exchange position C. In this state, the control unit 18 raises the exchanger 13. Then, the full bobbin support portion 421a delivers the full bobbin Bf received from the first conveying unit 11 to the hanger H on the second conveying unit 12 where no bobbin B is hung. Thus, it becomes a state where the hanger H adjacent to the exchanger 13 among the plurality of hangers H of the second conveying unit 12 hangs the full bobbin Bf. On the other hand, the empty bobbin support portion 422a delivers the empty bobbin Be received from the second conveying unit 12 to the hanger He for empty tubes of the first conveying unit 11. Thus, it becomes a state where the second hanger H, that is, the hanger He for empty tubes, hangs the empty bobbin Be.

[0081] If the exchanger 13 properly delivers the empty bobbin Be to the hanger He for empty tubes located at the exchange position C, the detection result of the bobbin detection unit 17 for this hanger He for empty tubes changes from "no bobbin" to "having a bobbin". Since the detection result of the bobbin detection unit 17 becomes "having a bobbin", the control unit 18 confirms that the exchanger 13 has properly delivered the empty bobbin Be to the hanger He for empty tubes of the first conveying unit 11. Thereafter, the control unit 18 lowers the exchanger 13 and moves the first plate 421 and the second plate 422 from the projecting position to the non-projecting position. Moreover, the control unit 18 rotates the rotating shaft 41 by half a turn, whereby the exchange unit 42 also rotates by half a turn. Thus, the exchanger 13 returns to the state where the first plate 421 is on the side of the first conveying unit 11 and the second plate 422 is on the side of the second conveying unit 12. Thus, one bobbin exchange operation by the exchanger 13 is completed.

[0082] The control unit 18 resumes the movement of the carriage 32. When the third hanger H of the first conveyor unit 11, i.e., the full bobbin tube hanger Hf, moves to the exchange position C, the hanger detection unit 16 detects that there is a hanger H at the exchange position C. When the hanger detection unit 16 detects that there is a hanger H at the exchange position C, the control unit 18 interrupts the movement of the carriage 32. Thus, the full bobbin tube hanger Hf stops at the exchange position C. In addition, the hanger detection unit 16 calculates the number of the detected hangers H. Since the detected hanger H is the third hanger H, the hanger detection unit 16 detects that the hanger H at the exchange position C is the full bobbin tube hanger Hf. Simultaneously with the movement of the carriage 32, the second conveyor unit 12 conveys only one hanger H. Thus, the hanger H adjacent to the exchanger 13 becomes the hanger H with an empty bobbin tube Be hung thereon.

[0083] In addition, for the subsequent operations of the exchanger 13, since they are the same as the above-described operations, the description thereof is omitted.

[0084] If the control unit 18 confirms that the exchanger 13 hands over the empty bobbin tube Be to the hanger H at the end of the line of the first conveyor unit 11, i.e., the empty bobbin tube hanger He, the control unit 18 resumes the movement of the carriage 32. Moreover, when the receiving position sensor 14 detects the detected portion 32a of the carriage 32, the control unit 18 stops the movement of the carriage 32. Thus, the carriage 32 stops at the receiving position D1. Therefore, the first conveyor unit 11 returns Figures 1 to 3 to the state before the bobbin tube handover operation shown.

[0085] In this way, when the bobbin tube B becomes a full bobbin tube Bf through the roving process performed by the roving machine main body 101, it is transferred from the roving machine 100 to the first conveyor unit 11. The full bobbin tube Bf transferred to the first conveyor unit 11 is handed over by the exchanger 13 to the second conveyor unit 12. The full bobbin tube Bf handed over to the second conveyor unit 12 is conveyed to the spinning machine 200. Moreover, the full bobbin tube Bf becomes an empty bobbin tube Be because the roving is recovered in the spinning process. After the empty bobbin tube Be is conveyed by the second conveyor unit 12 to the exchanger 13, it is handed over by the exchanger 13 to the first conveyor unit 11. The empty bobbin tube Be handed over to the first conveyor unit 11 is transferred to the roving machine 100.

[0086] So far, the bobbin exchange operation performed by the exchanger 13 has been described. However, in the event of a failure of the exchanger 13 or the like, there are cases where, instead of the exchanger 13, an operator performs an exchange operation of exchanging the bobbin B for the hanger H of the first conveying unit 11. In this case, after the bobbin transfer operation of the first conveying unit 11, with the carriage 32 in the delivery position D2, the operator removes the full bobbin Bf from the full-bobbin hanger Hf and attaches the empty bobbin Be to the empty-bobbin hanger He. For such an exchange operation by the operator of exchanging the bobbin B for the hanger H of the first conveying unit 11, there are cases of hanging errors in which the empty bobbin Be is mistakenly hung on the full-bobbin hanger Hf or the empty bobbin Be is forgotten to be hung on the empty-bobbin hanger He with respect to the hanger H.

[0087] <Inspection of Bobbin Hanging Error>

[0088] When the operator performs an exchange operation of exchanging the bobbin B for the hanger H of the first conveying unit 11, the control unit 18 inspects the hanging error of the bobbin B hung on the hanger H of the first conveying unit 11 by the operator as follows.

[0089] If the exchange operation of exchanging the bobbin B for the hanger H of the first conveying unit 11 by the operator is completed, the control unit 18 causes the carriage 32 to move circumferentially before performing the following bobbin transfer operation, thereby returning the carriage 32 at the delivery position D2 to the receiving position D1. In other words, the control unit 18 causes the carriage 32 to move circumferentially in a state where the exchanger 13 does not perform the bobbin exchange operation before performing the bobbin transfer operation. As a result, the plurality of hangers H are sequentially conveyed to the exchange position C starting from the leading hanger H. At this time, the hanger detection unit 16 detects whether there is a hanger H at the exchange position C, and when it is detected that there is a hanger H at the exchange position C, detects whether the hanger H is a full-bobbin hanger Hf or an empty-bobbin hanger He. In the present embodiment, the hanger detection unit 16 detects whether the hanger H at the exchange position C is a full-bobbin hanger Hf or an empty-bobbin hanger He based on which hanger H is detected. In addition, when the hanger detection unit 16 detects that there is a hanger H at the exchange position C, the bobbin detection unit 17 detects the presence or absence of the bobbin B.

[0090] In the present embodiment, before performing the bobbin transfer operation, when the carriage 32 is moved around in a state where the exchanger 13 does not perform the bobbin exchange operation, the control unit 18 does not stop each hanger H at the exchange position C but continuously moves the carriage 32. Therefore, the plurality of hangers H are conveyed by the carriage 32 in such a manner that each hanger H passes through the exchange position C. In the present embodiment, the hanger detection unit 16 and the bobbin detection unit 17 perform detection during the conveyance of the bobbin B by the carriage 32. Specifically, when each hanger H passes through the exchange position C, the hanger detection unit 16 detects that there is a hanger H at the exchange position C. In addition, the hanger detection unit 16 detects whether the hanger H passing through the exchange position C is a full-bobbin hanger Hf or an empty-bobbin hanger He. The bobbin detection unit 17 detects whether a bobbin B is hung on each hanger H passing through the exchange position C.

[0091] Based on the detection results of the hanger detection unit 16 and the bobbin detection unit 17 during the circumferential movement of the carriage 32, the control unit 18 determines whether a hanging error occurs in which the bobbin B is hung on the hanger H.

[0092] For example, as Figure 16 shown, assume a case where an empty bobbin Be is erroneously hung on the full-bobbin hanger Hf. In this case, if this hanger H is conveyed to the exchange position C, the hanger detection unit 16 detects that there is a hanger H at the exchange position C. In addition, if the hanger detection unit 16 detects that there is a hanger H at the exchange position C, the number of the detected hangers H is calculated. Since the detected hanger H is the odd-numbered hanger H, the hanger detection unit 16 detects that the hanger H at the exchange position C is the full-bobbin hanger Hf. When the hanger detection unit 16 detects that there is a hanger H at the exchange position C, the bobbin detection unit 17 detects "there is a bobbin".

[0093] In this case, based on the detection results of the hanger detection unit 16 and the bobbin detection unit 17, the control unit 18 determines that a bobbin B is hung on the full-bobbin hanger Hf. Moreover, when the control unit 18 determines that a bobbin B is hung on the full-bobbin hanger Hf, it is regarded that an empty bobbin Be is erroneously hung on the full-bobbin hanger Hf, and it is determined that a hanging error occurs in which the bobbin B is hung on the hanger H.

[0094] For example, as Figure 17As shown, assume a situation where the empty bobbin tube Be is forgotten to be hung on the hanger He for the empty bobbin tube. In this case, if the hanger H is transported to the exchange position C, the hanger detection unit 16 detects that there is a hanger H at the exchange position C. In addition, if the hanger detection unit 16 detects that there is a hanger H at the exchange position C, the number of the detected hangers H is calculated. Since the detected hanger H is the even-numbered hanger H, the hanger detection unit 16 detects that the hanger H at the exchange position C is the hanger He for the empty bobbin tube. When the hanger detection unit 16 detects that there is a hanger H at the exchange position C, the bobbin tube detection unit 17 detects "no bobbin tube".

[0095] In this case, the control unit 18 of the present embodiment determines, based on the detection results of the hanger detection unit 16 and the bobbin tube detection unit 17, that the bobbin tube B is not hung on the hanger He for the empty bobbin tube. Moreover, when the control unit 18 of the present embodiment determines that the bobbin tube B is not hung on the hanger He for the empty bobbin tube, it is regarded as forgetting to hang the empty bobbin tube Be on the hanger He for the empty bobbin tube, and it is determined that a hanging error of hanging the bobbin tube B on the hanger H has occurred.

[0096] In this way, before performing the bobbin tube handover operation, the control unit 18 moves the carriage 32 around in a state where the exchanger 13 does not perform the bobbin tube exchange operation. Moreover, the control unit 18 determines whether the bobbin tube B is hung on the hanger Hf for the full bobbin tube based on the detection results of the hanger detection unit 16 and the bobbin tube detection unit 17 during the circumferential movement of the carriage 32. When the control unit 18 determines that the bobbin tube B is hung on the hanger Hf for the full bobbin tube, it is determined that a hanging error of hanging the bobbin tube B on the hanger H has occurred. In addition, the control unit 18 of the present embodiment determines whether the bobbin tube B is hung on the hanger He for the empty bobbin tube based on the detection results of the hanger detection unit 16 and the bobbin tube detection unit 17 during the circumferential movement of the carriage 32. When the control unit 18 determines that the bobbin tube B is not hung on the hanger He for the empty bobbin tube, it is determined that a hanging error of hanging the bobbin tube B on the hanger H has occurred.

[0097] On the other hand, during the period until the receiving position sensor 14 detects the detected portion 32a, that is, during the period until the carriage 32 returns to the receiving position D1, when it is determined that the bobbin tube B is not hung on each hanger Hf for the full bobbin tube and the bobbin tube B is hung on each hanger He for the empty bobbin tube, the control unit 18 determines that no hanging error of hanging the bobbin tube B on the hanger H has occurred.

[0098] If the control unit 18 determines that no hanging error of hanging the bobbin tube B on the hanger H has occurred, it allows the bobbin tube handover operation performed by the first conveying unit 11. The control unit 18 causes the first conveying unit 11 to start the bobbin tube handover operation.

[0099] If the control unit 18 determines that a hanging error has occurred in hanging the bobbin B on the hanger H, it causes an error message indicating the occurrence of a hanging error in hanging the bobbin B on the hanger H to be displayed on a display screen (not shown). In addition, the control unit 18 does not permit the bobbin transfer operation performed by the first transfer unit 11. The control unit 18 restricts the bobbin transfer operation performed by the first transfer unit 11.

[0100] The operator recognizes that a hanging error has occurred in hanging the bobbin B on the hanger H by confirming the error message displayed on the display screen. The operator removes the empty bobbin Be that has been erroneously hung on the full-bobbin hanger Hf, or hangs the empty bobbin Be on the empty-bobbin hanger He where the empty bobbin Be has been forgotten to be hung. Thereafter, the control unit 18 checks for a hanging error in hanging the bobbin B on the hanger H by causing the carriage 32 to move around again in a state where the exchanger 13 has not performed the bobbin exchange operation. Moreover, if the control unit 18 determines that no hanging error has occurred in hanging the bobbin B on the hanger H, it cancels the display of the error message and permits the bobbin transfer operation performed by the first transfer unit 11. The control unit 18 causes the first transfer unit 11 to start the bobbin transfer operation.

[0101] [Functions and Effects of the Present Embodiment]

[0102] The functions and effects of the present embodiment will be described.

[0103] (1) Before performing the bobbin transfer operation, the control unit 18 causes the carriage 32 to move around in a state where the exchanger 13 has not performed the bobbin exchange operation. Based on the detection results of the hanger detection unit 16 and the bobbin detection unit 17 during the movement around of the carriage 32, the control unit 18 determines whether a bobbin B is hung on the full-bobbin hanger Hf. When the operator properly performs the exchange operation of exchanging the bobbin B on the hanger H of the first transfer unit 11, no empty bobbin Be is hung on the full-bobbin hanger Hf. Therefore, when the control unit 18 determines that a bobbin B is hung on the full-bobbin hanger Hf, it regards that an empty bobbin Be is erroneously hung on the full-bobbin hanger Hf, and determines that a hanging error has occurred in hanging the bobbin B on the hanger H. When determining whether a bobbin B is hung on the full-bobbin hanger Hf, the control unit 18 uses the hanger detection unit 16 and the bobbin detection unit 17. The hanger detection unit 16 and the bobbin detection unit 17 are existing detection units used to confirm that the exchanger 13 has properly performed the bobbin exchange operation. Therefore, it is possible to check for a hanging error in hanging the bobbin B on the hanger H by the operator without newly adding a detection unit.

[0104] (2) The control unit 18 determines whether a bobbin B is hung on the empty bobbin hanger He based on the detection results of the hanger detection unit 16 and the bobbin detection unit 17 during the circumferential movement of the carriage 32. When the operator properly performs the replacement operation of replacing the bobbin B with the hanger H relative to the first conveying unit 11, an empty bobbin Be is hung on the empty bobbin hanger He. Therefore, when the control unit 18 determines that no bobbin B is hung on the empty bobbin hanger He, it is regarded that the operator has forgotten to hang the empty bobbin Be on the empty bobbin hanger He, and it is determined that a hanging error has occurred in hanging the bobbin B on the hanger H. When determining whether a bobbin B is hung on the empty bobbin hanger He, the control unit 18 uses the hanger detection unit 16 and the bobbin detection unit 17 as existing detection units. Therefore, it is possible to check for the forgotten hanging of the empty bobbin Be on the empty bobbin hanger He by the operator without newly adding a detection unit. In this case, it is possible to avoid the failure of spinning due to the non - supply of the empty bobbin Be to the roving frame main body 101.

[0105] (3) When the control unit 18 determines that a hanging error has occurred in hanging the bobbin B on the hanger H, it restricts the bobbin hand - over operation performed by the first conveying unit 11. Therefore, when the empty bobbin Be is wrongly hung on the full - bobbin hanger Hf, it is possible to avoid the situation where the empty bobbin Be hung on the full - bobbin hanger Hf contacts the full - bobbin Bf of the roving frame 100 during the bobbin hand - over operation.

[0106] (4) The hanger detection unit 16 and the bobbin detection unit 17 perform detection during the conveyance of the bobbin B by the carriage 32. In this case, compared with the case where the hanger H is stopped at the exchange position C every time the hanger H is conveyed to the exchange position as in the bobbin exchange operation by the exchanger 13, it is possible to shorten the time required for checking for a hanging error in hanging the bobbin B on the hanger H.

[0107] (5) In the first conveying unit 11 after the bobbin hand - over operation, the carriage 32 is located at the delivery position D2. Therefore, when the operator performs the replacement operation of replacing the bobbin B with the hanger H relative to the first conveying unit 11, in order to perform the following bobbin hand - over operation, it is necessary to return the carriage 32 to the receiving position D1 by circumferentially moving it. The check for a hanging error in hanging the bobbin B on the hanger H relative to the first conveying unit 11 is performed during the circumferential movement for returning the carriage 32 from the delivery position D2 to the receiving position D1. Therefore, it is also possible that there is no separately provided process for checking for a hanging error in hanging the bobbin B on the hanger H relative to the first conveying unit 11.

[0108] (6)In the case of using the full bobbin tube detection unit of the prior art, the distance between the light projector and the light receiver is large. Therefore, due to the misalignment of the full bobbin tube detection unit, the inclination of the hanger H, foreign matter attached to the hanger H, etc., detection errors are likely to occur. In contrast, in the present embodiment, the hanger detection unit 16 and the bobbin tube detection unit 17 are arranged at the exchange position C, and thus are disposed close to the hanger H. Therefore, in the bobbin tube conveying device 10 of the present embodiment, detection errors are not likely to occur. In addition, it is easy to adjust the position of the hanger detection unit 16 relative to the hanger H and the position of the bobbin tube detection unit 17 relative to the bobbin tube B.

[0109] (7)The control unit 18 detects whether the bobbin tube B is hung on the hanger H based on the detection results of the hanger detection unit 16 and the bobbin tube detection unit 17. Therefore, compared with the case where an operator visually observes and confirms whether the bobbin tube B is hung on the hanger H, it is possible to more reliably check for hanging errors in hanging the bobbin tube B on the hanger H.

[0110] (8)The hanger detection unit 16 of the present embodiment is a single sensor 16a. This sensor 16a detects the presence or absence of the hanger H at the exchange position C, and when it detects the presence of the hanger H at the exchange position C, it detects whether the hanger H is a full bobbin tube hanger Hf or an empty bobbin tube hanger He. Therefore, compared with the case where the hanger detection unit 16 is composed of two sensors, namely, a first sensor that detects the presence or absence of the hanger H at the exchange position C and a second sensor that detects whether the hanger H is a full bobbin tube hanger Hf or an empty bobbin tube hanger He when the first sensor detects the presence of the hanger H at the exchange position C, the structure of the bobbin tube conveying device 10 can be simplified.

[0111] [Modification Example]

[0112] In addition, the above embodiment can be modified as follows. The above embodiment and the following modification examples can be implemented in combination with each other within a range where there is no technical contradiction.

[0113] 〇It is also possible that the control unit 18 determines that a hanging error has occurred in hanging the bobbin tube B on the hanger H only when it is determined based on the detection results of the hanger detection unit 16 and the bobbin tube detection unit 17 during the circumferential movement of the carriage 32 that the bobbin tube B is hung on the full bobbin tube hanger Hf. That is, it is also possible that the control unit 18 does not check for the omission of hanging the empty bobbin tube Be on the empty bobbin tube hanger He.

[0114] 〇It is also possible that when checking for hanging errors in hanging the bobbin tube B on the hanger H made by an operator, at the moment such as during the bobbin tube exchange operation performed by the exchanger 13, the control unit 18 stops the carriage 32 every time the hanger H is conveyed to the exchange position C.

[0115] Alternatively, the control unit 18 may determine that the hanging error check of the bobbin B has been performed for all the hangers H based on the fact that the number of hangers H calculated by the hanger detection unit 16 is the same as the total number of hangers H.

[0116] Alternatively, the hanger detection unit 16 may not be composed of a single sensor 16a. The hanger detection unit 16 may be composed of two sensors, namely, a first sensor and a second sensor. The first sensor is a sensor for detecting the presence or absence of a hanger H at the exchange position C. The second sensor is a sensor for detecting whether the hanger H is a full-bobbin hanger Hf or an empty-bobbin hanger He when the first sensor detects the presence of a hanger H at the exchange position C.

[0117] In this case, for example, a detected object is provided on the full-bobbin hanger Hf. The second sensor is configured to be able to detect the detected object. When the first sensor detects the presence of a hanger H at the exchange position C, the second sensor detects whether the hanger H at the exchange position C is a full-bobbin hanger Hf or an empty-bobbin hanger He based on the presence or absence of the detected object on the hanger H. When the second sensor detects the detected object, it detects that the hanger H is a full-bobbin hanger Hf. On the other hand, when the second sensor does not detect the detected object, it detects that the hanger H is an empty-bobbin hanger He.

[0118] Alternatively, instead of providing the detected object on the full-bobbin hanger Hf, the detected object may be provided on the empty-bobbin hanger He. In this case, when the second sensor detects the detected object, it detects that the hanger H is an empty-bobbin hanger He. On the other hand, when the second sensor does not detect the detected object, it detects that the hanger H is a full-bobbin hanger Hf.

[0119] The hanger detection unit 16 may not be arranged at the exchange position C as long as it can detect the presence or absence of a hanger H at the exchange position C and can detect whether the hanger H is a full-bobbin hanger Hf or an empty-bobbin hanger He when it detects the presence of a hanger H at the exchange position C.

[0120] The bobbin detection unit 17 may not be arranged at the exchange position C as long as it can detect the presence or absence of the bobbin B when the hanger detection unit 16 detects the presence of a hanger H at the exchange position C.

[0121] Alternatively, when the control unit 18 determines that a hanging error of the bobbin B by the operator has occurred, instead of displaying an error message on the display screen, the buzzer may be sounded to notify the operator of the hanging error of the bobbin B. In addition, the control unit 18 may notify the operator of the hanging error of the bobbin B by sounding the buzzer in addition to displaying an error message on the display screen.

[0122] Alternatively, when the empty bobbin Be is incorrectly hung on the full bobbin hanger Hf or when it is forgotten to hang the empty bobbin Be on the empty bobbin hanger He, the control unit 18 causes different error messages to be displayed on the display screen. In this case, the operator only needs to confirm the hanger H on which the error message is displayed, so the burden on the operator can be reduced.

[0123] Alternatively, the moving direction X of the carriage 32 may be the direction opposite to that of the above-described embodiment. In this case, the receiving position sensor 14 and the delivery position sensor 15 are arranged on the side of the second straight portion 31b. Further, in the above-described embodiment, the hanger H used in the form of the full bobbin hanger Hf is used as the empty bobbin hanger He, and the hanger H used in the form of the empty bobbin hanger He is used as the full bobbin hanger Hf.

[0124] The structure of the exchanger 13 in the above-described embodiment is an example. The structure of the exchanger 13 may be appropriately changed as long as it can perform the bobbin exchange operation between the first conveying unit 11 and the second conveying unit 12.

[0125] Alternatively, the roving frame 100 and the bobbin conveying device 10 may be controlled by a single control device. In this case, the control unit 18 is included in the control device that controls the roving frame 100 and the bobbin conveying device 10.

[0126] [Supplementary Note]

[0127] The following describes the technical ideas that can be grasped from the above-described embodiments and modification examples.

[0128] [1]A bobbin conveying device is a bobbin conveying device that conveys bobbins wound with roving, i.e., full bobbins, and bobbins without the above-mentioned roving wound thereon, i.e., empty bobbins, between a roving frame and a spinning frame. It is characterized by comprising: a first conveying part having an annular track, a carriage capable of moving along the annular track, and a plurality of hangers suspended from the carriage and used in the form of a full-bobbin hanger for hanging the full bobbins or an empty-bobbin hanger for hanging the empty bobbins. The full-bobbin hangers and the empty-bobbin hangers are alternately arranged, and a bobbin transfer action of receiving the full bobbins from the roving frame onto the full-bobbin hangers and delivering the empty bobbins from the empty-bobbin hangers to the roving frame is performed; a second conveying part connected to the spinning frame; an exchanger that performs a bobbin exchange action of exchanging the full bobbins and the empty bobbins between the first conveying part and the second conveying part; a hanger detection part that, when the position where the exchanger performs the bobbin exchange action in the circumferential direction of the annular track is taken as an exchange position, detects whether there is a hanger at the exchange position, and when it is detected that there is a hanger at the exchange position, detects whether the hanger is a full-bobbin hanger or an empty-bobbin hanger; a bobbin detection part that, when the hanger detection part detects that there is a hanger at the exchange position, detects the presence or absence of the bobbin; and a control part that controls the first conveying part and the exchanger based on the detection results of the hanger detection part and the bobbin detection part. For the control part, before performing the bobbin transfer action, the control part makes the carriage move around in a state where the exchanger does not perform the bobbin exchange action, and based on the detection results of the hanger detection part and the bobbin detection part during the circumferential movement of the carriage, the control part determines whether a bobbin is hung on the full-bobbin hanger. When a bobbin is hung on the full-bobbin hanger, the control part determines that a hanging error has occurred in hanging the bobbin on the hanger.

[0129] [2]In the bobbin conveying device described in [1], for the control part, based on the detection results of the hanger detection part and the bobbin detection part during the circumferential movement of the carriage, the control part determines whether a bobbin is hung on the empty-bobbin hanger. When no bobbin is hung on the empty-bobbin hanger, the control part also determines that a hanging error has occurred in hanging the bobbin on the hanger.

[0130] [3]In the bobbin conveying device described in [1] or [2], when the control part determines that a hanging error has occurred in hanging the bobbin on the hanger, the control part restricts the bobbin transfer action performed by the first conveying part.

[0131] [4]In the bobbin conveying device according to any one of [1] to [3], the hanger detection unit and the bobbin detection unit perform detection during the conveyance of the bobbin by the carriage.

[0132] Description of Reference Numerals

[0133] 10... Bobbin conveying device; 11... First conveying unit; 12... Second conveying unit; 13... Exchanger; 16... Hanger detection unit; 17... Bobbin detection unit; 18... Control unit; 31... Ring track; 32... Carriage; 100... Roving frame; 200... Ring spinning frame; B... Bobbin; Be... Empty bobbin; Bf... Full bobbin; C... Exchange position; H... Hanger; He... Hanger for empty bobbin; Hf... Hanger for full bobbin.

Claims

1. A bobbin conveying device is a bobbin conveying device that conveys bobbins wound with roving, i.e., full bobbins, and bobbins without winding the roving, i.e., empty bobbins, between a roving frame and a spinning frame. It is characterized in that it comprises: A first conveying part having an annular track, a carriage capable of moving along the annular track, and a plurality of hangers suspended from the carriage and used in the form of hangers for full bobbins for hanging the full bobbins or hangers for empty bobbins for hanging the empty bobbins. The hangers for full bobbins and the hangers for empty bobbins are alternately arranged, and a bobbin handover action is performed to receive the full bobbins from the roving frame onto the hangers for full bobbins and hand over the empty bobbins from the hangers for empty bobbins to the roving frame. A second conveying part connected to the spinning frame; An exchanger that performs a bobbin exchange action to exchange the full bobbins and the empty bobbins between the first conveying part and the second conveying part; A hanger detection part. When the position where the exchanger performs the bobbin exchange action in the circumferential direction of the annular track is taken as the exchange position, the hanger detection part detects whether there is a hanger at the exchange position. When it is detected that there is a hanger at the exchange position, the hanger detection part detects whether the hanger is a hanger for full bobbins or a hanger for empty bobbins. A bobbin detection part that detects the presence or absence of the bobbin when the hanger detection part detects that there is a hanger at the exchange position; And A control part that controls the first conveying part and the exchanger based on the detection results of the hanger detection part and the bobbin detection part. For the control part, before performing the bobbin handover action, the control part makes the carriage move around in a state where the exchanger does not perform the bobbin exchange action. Based on the detection results of the hanger detection part and the bobbin detection part during the circumferential movement of the carriage, the control part determines whether a bobbin is hung on the hanger for full bobbins. When a bobbin is hung on the hanger for full bobbins, the control part determines that a hanging error has occurred in hanging the bobbin on the hanger.

2. The bobbin conveying device according to claim 1, It is characterized in that For the control part, Based on the detection results of the hanger detection part and the bobbin detection part during the circumferential movement of the carriage, the control part determines whether a bobbin is hung on the hanger for empty bobbins. When no bobbin is hung on the hanger for empty bobbins, the control part also determines that a hanging error has occurred in hanging the bobbin on the hanger.

3. The bobbin conveying device according to claim 1, It is characterized in that When the control part determines that a hanging error has occurred in hanging the bobbin on the hanger, the control part restricts the bobbin handover action performed by the first conveying part.

4. The bobbin conveying device according to claim 1, It is characterized in that The hanger detection part and the bobbin detection part perform detection during the conveyance of the bobbin by the carriage.

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