Thread cutting suction device

Abstract

The yarn cutting and suction device (40) of the present application more reliably cuts and suctions yarns running in a side-by-side state, and includes a cutter (42) having a blade portion (42a) for cutting the yarns (Y) and capable of moving from the left to the right, a cylinder member (51) capable of moving integrally with the cutter and suctioning the cut yarns (Y), a first yarn guide (44) provided at a position upstream of the cutter in the yarn running direction, moving integrally with the cutter, and guiding the yarns toward the blade portion, and a second yarn guide (45) provided at a position downstream of the cutter, moving integrally with the cutter, and guiding the yarns toward the blade portion. The first yarn guide has a first restriction portion for restricting the yarns from moving in a direction in which the yarns are pressed by contacting the blade portion, and the second yarn guide has a second restriction portion for restricting the yarns from moving in a direction in which the yarns are pressed by contacting the blade portion.

Description

Technical Field

[0001] This invention relates to a wire cutting and suction device. Background Technology

[0002] Patent Document 1 discloses a wire cutting and attracting device, which includes: a cutter that can move in the direction of arrangement of multiple wires; and a attracting device that is disposed close to the cutter and can move in the same direction of arrangement as the cutter to attract the wires cut by the cutter.

[0003] In the thread-cutting suction device of Patent Document 1, by moving the cutter in the direction of the arrangement of multiple threads, the traveling threads can be cut one by one. Thus, all threads can be cut regardless of the number of threads.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2012-180610

[0005] However, in the wire cutting suction device of Patent Document 1, when the wire is to be cut by moving the cutter in the direction of the arrangement of multiple wires, sometimes the wire cannot be reliably cut because the tip of the cutter pushes the wire out and the wire moves away from the blade. Summary of the Invention

[0006] The purpose of this invention is to provide a thread cutting and attracting device that can more reliably cut and attract threads that are traveling side by side in the arrangement direction.

[0007] The first invention discloses a wire cutting and attracting device for cutting and attracting multiple wires arranged side-by-side in the arrangement direction and traveling in the wire travel direction. It is characterized by comprising: a cutter having a blade for cutting the wires; an attracting unit integral with the cutter for attracting the multiple wires cut by the cutter; a first wire guide disposed upstream of the cutter in the wire travel direction, integral with the cutter, for guiding the wires toward the blade; and a second wire guide disposed upstream of the cutter in the wire travel direction. The downstream position of the wire travel direction is integrated with the cutter to guide the wire toward the blade. When the cutter cuts the wire, the relative position of the cutter with respect to the multiple wires shifts from one side of the arrangement direction to the other. The first wire guide has a first limiting part that restricts the wire from moving in the direction that is pressed due to contact between the wire and the blade. The second wire guide has a second limiting part that restricts the wire from moving in the direction that is pressed due to contact between the wire and the blade.

[0008] According to the first invention, when the wire comes into contact with the blade due to the relative movement of the cutter relative to the wire, the movement of the wire in the direction pressed by the blade is restricted at both the upstream and downstream sides of the cutter in the direction of wire travel. Therefore, it is possible to suppress the wire from moving away from the blade, and to more reliably cut and attract wires traveling side by side in the arrangement direction.

[0009] The second invention is characterized in that, in the first invention, a first guide groove for guiding the wire toward the blade portion is formed on the first wire guide, and a second guide groove for guiding the wire toward the blade portion is formed on the second wire guide, a portion of the inner side surface of the first guide groove constitutes the first limiting portion, and a portion of the inner side surface of the second guide groove constitutes the second limiting portion.

[0010] According to the second invention, the first guide groove and the second guide groove can more reliably guide the thread to the blade, and can further reliably cut and attract the thread that is traveling in a parallel state in the arrangement direction.

[0011] The third invention is characterized in that, in the first or second invention, the blade portion extends at the contact point where it contacts the thread when viewed from the direction of thread travel, with an angle of 45 degrees or more and 90 degrees or less relative to the direction in which the thread is guided by the first and second thread guides.

[0012] According to the third invention, compared to the case where, when viewed from the direction of the thread's travel, the angle between the extending direction of the blade portion at the contact point with the thread and the direction in which the thread is guided by the first and second thread guides is less than 45 degrees, a greater force is transmitted from the blade portion to the thread when cutting it. Therefore, the traveling thread can be cut more reliably.

[0013] The fourth invention is characterized in that, in the first and second inventions, the blade portion extends in a straight line from one side of the arrangement direction toward the other side, located on one side of the wire travel direction and an orthogonal direction orthogonal to the arrangement direction. When viewed from the wire travel direction, the angle between the extension direction of the blade portion at the contact point where it contacts the wire and the orthogonal direction relative to the direction in which the wire is guided by the first and second wire guides, and the angle between the orthogonal direction and the side of the orthogonal direction, is 10 degrees or more and 90 degrees or less.

[0014] According to the fourth invention, compared to the case where, when viewed from the direction of the thread's travel, the angle between the extension direction of the blade portion at the contact point where it contacts the thread and the orthogonal direction to the direction in which the thread is guided is greater than 90 degrees or less than 10 degrees, the thread can be more appropriately guided towards the blade portion, which extends obliquely relative to the orthogonal direction when viewed from the direction of the thread's travel. Therefore, the traveling thread can be cut more reliably.

[0015] The fifth invention is characterized in that, in the third and fourth inventions, the blade portion extends in a straight line from one side of the arrangement direction toward the other side, in a manner located on either the upstream or downstream side of the direction of thread travel.

[0016] According to the fifth invention, the blade can be brought into contact with the traveling thread when the extension direction of the blade is inclined relative to the direction of thread travel. Therefore, compared with the case where the blade is brought into contact with the traveling thread when the extension direction of the blade is perpendicular to the direction of thread travel, the cutting of the blade relative to the traveling thread is better, and the thread can be cut more easily.

[0017] The filament cutting and suction device of the sixth invention is characterized in that, in the first to fifth inventions, the blade portion is formed such that, during the period from when it comes into contact with the filament until the filament is cut, the contact portion that comes into contact with the filament changes.

[0018] According to the sixth invention, the thread moves along the blade from the moment it contacts the blade until it is cut. Therefore, compared to cutting the thread through only one part of the blade, the load on the blade is distributed. This allows for cutting the traveling thread with less load on the blade.

[0019] The 7th invention is characterized in that, in the 6th invention, the blade portion, when viewed from the arrangement direction, has an angle of inclination of 25 degrees or more and 45 degrees or less relative to the direction of the thread travel.

[0020] According to the seventh invention, the thread moves over the blade portion at an angle of 25 degrees to 45 degrees relative to the thread's direction of travel when viewed from the arrangement direction, from the moment it comes into contact with the blade portion until it is cut. This allows for cutting of the traveling thread with less strain on the blade portion.

[0021] The 8th invention is characterized in that, in the 1st to 7th inventions, the cutter is a single blade structure including one of the aforementioned blade portions.

[0022] According to the 8th invention, the cost can be reduced compared to a multi-blade structure comprising two or more cutting edges.

[0023] The effects of the invention

[0024] In a thread cutting and attraction device, threads traveling side by side in the alignment direction can be cut and attracted more reliably. Attached Figure Description

[0025] Figure 1 This is a schematic diagram showing the spinning traction machine of this embodiment.

[0026] Figure 2 This is a perspective view showing the wire cutting and suction device of this embodiment.

[0027] Figure 3 This is a side cross-sectional view showing the wire cutting and suction device of this embodiment.

[0028] Figure 4 These are top views of the right front end portion of the wire cutting and suction device, (a) is a top view of the first wire guide, and (b) is a top view of the second wire guide.

[0029] Figure 5 yes Figure 4 VV cross-section diagram.

[0030] Figure 6 It is a side cross-sectional view showing the state of the wire before the wire cutting suction device cuts the wire.

[0031] Figure 7 It is a side cross-sectional view showing the cutting and suction action of the wire cutting and suction device.

[0032] Figure 8 This diagram shows the state of the thread cutting and suction device immediately after cutting the thread and after the suction action has ended.

[0033] Figure 9 This is a top view of the right front end portion of a modified example of a wire cutting and suction device.

[0034] Figure 10 This is a top view showing the right front end portion of the wire cutting and suction device in other variations.

[0035] Figure 11 yes Figure 10 XI-XI section diagram.

[0036] Explanation of symbols

[0037] 1. Spinning traction machine

[0038] 30 Wire limiting guide

[0039] 40 Thread cutting and suction device

[0040] 41 Bracket

[0041] 42 Cut-off

[0042] 42a blade section

[0043] 43 Suction Device

[0044] 44 First guide wire device

[0045] 45 Second guide wire

[0046] 46 First guide groove

[0047] 47 Second guide groove

[0048] 51. Cylinder component (the suction part of the present invention)

[0049] 51a suction port

[0050] 144 First guide wire

[0051] 145 Second guide wire

[0052] Y-thread

[0053] θ2 angle

[0054] θ3 tilt angle Detailed Implementation

[0055] (Overall structure of spinning traction machine 1)

[0056] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Figure 1 This is a diagram showing the general structure of the spinning traction machine 1. (For example...) Figure 1 As shown, the spinning traction machine 1 includes a spinning device 2, an oil supply guide 3, two guide rollers 4a and 4b, and a yarn winding device 5. Hereinafter, Figure 1 The vertical direction on the paper is set as the vertical direction, and the horizontal direction is set as the front and back direction. Additionally, [the following text is incomplete and likely refers to a different topic:] ...and... Figure 1 The direction perpendicular to the paper is defined as left and right, and the front side of the paper is defined as right. The following explanations will use these directional terms appropriately.

[0057] The spinning traction machine 1 is configured such that after the oil is attached to multiple filaments Y continuously spun from the spinning spinneret 2a of the spinning device 2 by the oil supply guide 3, these filaments Y are stretched by two guide rollers 4a and 4b, and then conveyed and wound to the filament winding device 5 located below.

[0058] The spinning spinneret 2a of the spinning device 2 continuously spins molten fiber material such as polyester downwards into multiple filaments Y formed by multiple filaments F. An oiling guide 3 is disposed below the spinning device 2 to apply oil to the multiple filaments Y spun from the spinning device 2. Furthermore, the oiling guide 3 fixes the spacing of the multiple filaments Y in the left-right direction (the arrangement direction of the present invention).

[0059] Furthermore, a wire limiting guide 30 is provided below the oil supply guide 3 and above the guide roller 4a. For example... Figure 2 As shown, the yarn guide 30 has multiple guide plates 30a arranged side-by-side in the direction of the multiple yarns Y, forming a comb-like shape. The multiple guide plates 30a extend from the front to the rear. The multiple yarns Y fed from the spinning device 2 pass between the multiple guide plates 30a respectively. Thus, the spacing in the direction of the multiple yarns Y, i.e., the left-right direction, is fixed.

[0060] The oiled yarn Y is drawn by two guide rollers 4a and 4b and fed to the yarn winding device 5 located below. Guide roller 4b is positioned downstream of guide roller 4a in the yarn travel direction and above and behind guide roller 4a. The two guide rollers 4a and 4b are driven by a drive motor (not shown).

[0061] The yarn winding device 5 is a device for winding multiple yarns Y, and includes: multiple traverse fulcrum guides 11, which are respectively distributed to the multiple yarns Y fed from the guide roller 4b; multiple traverse guides 12, which cause the yarns Y distributed by the multiple traverse fulcrum guides 11 to traverse; two bobbin supports 13, on which multiple bobbins B are mounted in a straight line along the axis; a disc-shaped turntable 14, which supports one end of the bobbin support 13; a main frame 15, which supports the turntable 14 so that it can rotate; and contact rollers 16 that can move in the vertical direction relative to the main frame 15 and can separate from or contact the bobbins B mounted on the bobbin support 13.

[0062] (Structure of the thread cutting and suction device 40)

[0063] Next, the wire cutting and suction device 40 will be described. Figure 1 as well as Figure 2 As shown, the wire cutting and suction device 40 is positioned below the oil supply guide 3 and immediately upstream of the wire travel direction of the wire guide 30, to the left of the wire channel of the multiple wires Y traveling from upstream to downstream in the wire travel direction, arranged in a left-right direction. Figure 3 As shown, the wire cutting and suction device 40 has a support 41, a cutter 42, a suction device 43, a first wire guide 44, and a second wire guide 45 that form its base.

[0064] For example Figure 7 As shown, the suction device 43 is used to attract the multiple filaments Y that have been cut by the cutter 42. Figure 3 As shown, the suction device 43 includes a cylindrical component 51 (corresponding to the suction part of the present invention) and a cylinder (not shown), etc. The right end of the cylindrical component 51 protrudes from the opening 41a of the bracket 41. The cylindrical component 51 and... Figure 1 The suction source 71 shown is connected to generate an attractive force at the front right end of the cylindrical component 51 to attract the cut multiple threads Y. Then, the cut threads Y are attracted from the suction port 51a at the front right end of the cylindrical component 51. The cylindrical component 51 is connected to the suction source 71 via a solenoid valve (not shown). A cylinder (not shown) is housed within the bracket 41. Furthermore, a cylinder rod (not shown) is mounted on the cylinder. The cylinder rod is connected to the cylindrical component 51. Figure 1 The drive device 70 shown drives the cylinder to move the cylinder rod forward and backward, thereby causing the cylinder component 51 to move forward and backward in the arrangement direction (left-right direction) of the multiple filaments Y. Furthermore, in this embodiment, the left side of the left-right direction corresponds to one side of the arrangement direction of the present invention, and the right side of the left-right direction corresponds to the other side of the arrangement direction of the present invention.

[0065] For example Figure 7 As shown, when the bobbin component 51 moves to the right, the cutter 42 is used to cut multiple threads Y one by one, or to cut multiple threads together, above the thread guide 30. Figure 2 , Figure 3 As shown, the cutter 42 is mounted on the lower part of the right front end of the cylinder member 51 via the cutter holding part 48. Thus, as the cylinder member 51 moves to the right, the cutter 42 moves together with it to the right of the arrangement of the multiple filaments Y.

[0066] The cutter 42 has a plate-shaped blade portion 42a for cutting the thread Y. That is, the cutter 42 is a single-blade structure. The blade portion 42a extends in a straight line along the end edge of the cutter 42. Figure 3 As shown, the blade portion 42a extends in a straight line, positioned on the upper side as it moves from the left to the right in the left-right direction. When viewed from the front-back direction, the angle θ1 of the extension direction of the blade portion 42a relative to the vertical direction is, for example, only within the range of 25 degrees to 45 degrees. Furthermore, in this embodiment, near the wire cutting suction device 40, the vertical direction is substantially aligned with the wire travel direction. Additionally, as... Figure 5As shown, the blade portion 42a extends in a straight line, positioned on the upper side as it moves from the front to the rear in the front-rear direction. Specifically, the blade portion 42a extending in a straight line is such that, when viewed from the left-right direction (arrangement direction), the angle θ3 of the blade portion 42a's extension direction relative to the vertical direction is within the range of 25 degrees to 45 degrees (see reference). Figure 5 Furthermore, since the blade portion 42a has predetermined tilt angles θ1 and θ3, when viewed from above, the blade portion 42a extends in a straight line in a manner that it is located on the rear side as it moves from left to right (see reference). Figure 4 ).

[0067] The first wire guide 44 and the second wire guide 45 are components used to guide the wire Y towards the blade portion 42a of the cutter 42. The first wire guide 44 is located upstream of the cutter 42 in the wire travel direction and is mounted on the lower part of the right front end of the bobbin member 51 via the cutter holding portion 48. The second wire guide 45 is located downstream of the cutter 42 in the wire travel direction and is mounted on the lower part of the right front end of the bobbin member 51 via the cutter holding portion 48. Thus, as the bobbin member 51 moves to the right, the first wire guide 44 and the second wire guide 45 move together with it to the right side where the multiple wires Y are arranged. That is, as the bobbin member 51 moves in the left and right direction, the cutter 42, the suction device 43, the first wire guide 44, and the second wire guide 45 can move together in the left and right direction.

[0068] like Figure 2 As shown, a first guide groove 46 is formed on the first wire guide 44. When viewed from above, the first guide groove 46 opens on the right side and extends straight out to the left and rearward at an angle. A second guide groove 47 is formed on the second wire guide 45. When viewed from above, the second guide groove 47 opens on the right side and extends straight out to the left and rearward at an angle. When the cylinder component 51 moves from left to right in the left-right direction, the multiple wires Y arranged in the left-right direction are guided one by one towards the cutting edge 42a by the first guide groove 46 and the second guide groove 47. That is, in this embodiment, the extending direction of the first guide groove 46 and the second guide groove 47 is the direction in which the first guide groove 46 and the second guide groove 47 guide the wires Y.

[0069] As described above, the blade portion 42a extends in a straight line such that it is located on the rear side (corresponding to one side of the orthogonal direction of the present invention) in the front-back direction (corresponding to the orthogonal direction of the present invention) as it moves from the left side (one side) in the left-right direction (arrangement direction) towards the right side (the other side). Then, as... Figure 4As shown, when viewed from the vertical direction (the direction in which the thread travels), the angle θ2 between the extension direction of the straight line along the blade portion 42a and the rearward side (corresponding to one side of the orthogonal direction of the present invention) of the extension direction of the first guide groove 46 and the second guide groove 47 is 45 degrees or more and 90 degrees or less. Therefore, when cutting the thread Y, a greater force can be transmitted from the blade portion 42a to the thread Y, resulting in a more reliable cut to the traveling thread Y. Furthermore, when viewed from the vertical direction, the thread Y can be more appropriately guided towards the blade portion, which extends obliquely relative to the front-back direction.

[0070] Here, the thread Y guided by the blade portion 42a comes into contact with the blade portion 42a, which extends in a straight line from left to right and is located at the rear when viewed from above and below, thereby being pressed in a direction that is further to the right and forward than the blade portion 42a. In this case, the portion of the inner surface of the first guide groove 46 that is forward in the front-rear direction and near the blade portion 42a, further to the right than the blade portion 42a ( Figure 4 (a) the oblique part), restricts the movement of the Y-axis of the wire in the direction that the wire Y is pressed due to contact with the blade part 42a (see reference). Figure 4 (a) and Figure 5 Furthermore, the portion of the inner side of the second guide groove 47 in the rearward direction, near the blade portion 42a, is located to the right of the blade portion 42a. Figure 4 (b) the oblique part), restricting the movement of the Y-axis of the wire in the direction that the wire Y is pressed due to contact with the blade part 42a (see reference). Figure 4 (b) and Figure 5 That is, a portion of the inner surface of the first guide groove 46 ( Figure 4 The oblique portion of (a) corresponds to the first limiting portion of the present invention, and a portion of the inner side surface of the second guide groove 47. Figure 4 The slanted portion of (b) corresponds to the second limiting portion of the present invention.

[0071] (The cutting and suction action of the thread cutting and suction device 40 on the thread Y)

[0072] The following is for reference Figures 4-8 This explains the cutting action of the wire cutting suction device 40 on the wire Y. Furthermore, in Figure 4 as well as Figure 5In this configuration, the thread Y that is not guided to the first guide groove 46 and the second guide groove 47 is defined as Ya, and the thread Y that is guided to the first guide groove 46 and the second guide groove 47 is defined as Yb. Furthermore, during the winding of the thread Y by the thread winding device 5, the connection between the suction device 43 and the suction source 71 is cut off by a solenoid valve (not shown) without actuation. Additionally, the bobbin component 51 is positioned back towards the support 41, and the right front end of the bobbin component 51, the cutter 42, the first guide wire 44, and the second guide wire 45 are also retracted to the side closer to the support 41 than the multiple threads Y traveling.

[0073] like Figure 6 As shown, for example, when an abnormality such as a broken filament is detected during winding by a sensor (not shown), the thread cutting and suction device 40 operates automatically or manually by the operator. Since the solenoid valve (not shown) is opened, the bobbin component 51 is connected to the suction source 71, and the thread cutting and suction device 40 begins to perform suction. Furthermore, Figure 6 The arrow inside the cylindrical component 51 indicates the direction of attraction.

[0074] Next, as Figure 7 As shown, the cylinder is driven by the drive device 70, causing the cylinder rod to extend and the connected cylinder component 51 to protrude to the right. As the cylinder component 51 moves to the right, the cutter 42, the first wire guide 44, and the second wire guide 45, all mounted on the cylinder component 51, move to the right side where the multiple wires Ya are arranged. Thus, as... Figure 4 As shown, the leftmost thread Ya among the multiple threads Ya arranged in the left-right direction is guided from the openings on the right side of the first guide groove 46 and the second guide groove 47 into the first guide groove 46 and the second guide groove 47. The thread Yb guided to the first guide groove 46 and the second guide groove 47 moves rearward and to the leftward along the first guide groove 46 and the second guide groove 47 as the cylinder component 51 moves (see reference). Figure 4 (Solid arrow).

[0075] Furthermore, the thread channel of thread Ya, which is not guided to the first guide groove 46 and the second guide groove 47, is defined by the oil supply guide 3 and the thread limiting guide 30. In contrast, when viewed along the vertical direction, the first guide groove 46 and the second guide groove 47 extend obliquely to the left and rear, therefore... Figure 4As shown, the thread channel of thread Yb, which is guided to the first guide groove 46 and the second guide groove 47, is located on the rear side in the front-rear direction compared to the thread channel of thread Ya. More specifically, the thread channel of thread Yb is defined by the inner surface of the oil supply guide 3 and the front side of the first guide groove 46 on the upstream side of the thread travel direction compared to the first guide 44, by the inner surface of the front side of the first guide groove 46 and the inner surface of the front side of the second guide groove 47 between the first guide 44 and the second guide 45, and by the inner surface of the front side of the second guide groove 47 and the thread limiting guide 30 on the downstream side of the second guide 45 in the thread travel direction.

[0076] When the cylinder component 51 is moved further to the right while the thread Yb is guided into the first guide groove 46 and the second guide groove 47, the thread Yb contacts the blade portion 42a. Then, in order to cut the thread Yb using the blade portion 42a, the cylinder component 51 is moved further to the right while the thread Yb is in contact with the blade portion 42a. At this time, the thread Yb is about to be pushed forward and to the right of the blade portion 42a by contacting it, but a portion of the inner surface of the first guide groove 46 ( Figure 4 (a) the slanted portion) and a portion of the inner side surface of the second guide groove 47 ( Figure 4 At both points of the diagonal section (b), the movement of the thread Yb is restricted to the front and right side of the blade 42a.

[0077] Regarding a portion of the inner side of the first guide groove 46 (refer to...) Figure 4 (a) the slanted portion) and a portion of the inner side surface of the second guide groove 47 (see reference) Figure 4 The restriction on the movement of the thread Yb by the oblique section (b) will be explained in detail below. When the thread Yb comes into contact with the cutting edge 42a, as... Figure 5 As shown, the portion of the thread Yb that contacts the blade 42a contacts the inner surface of the first guide groove 46 on the upstream side of the thread travel direction, and the portion of the thread Yb that contacts the blade 42a contacts the inner surface of the second guide groove 47 on the downstream side of the thread travel direction. In this state, when the cylinder component 51 is moved to the right, the thread channel between the blade 42a of the thread Yb and the oil supply guide 3 disposed on the upstream side of the blade 42a in the thread travel direction, and the thread channel between the blade 42a and the thread limiting guide 30 disposed on the downstream side of the blade 42a in the thread travel direction, move forward and to the right. However, the portion of the thread Yb traveling upstream of the blade 42a in the thread travel direction that hooks onto the front side of the inner surface of the first guide groove 46 and is near the blade 42a on the right side of the blade 42a ( Figure 4(a) The oblique part). Therefore, the only part of the wire Yb that moves forward and to the right in the wire channel that travels upstream of the blade 42a in the wire travel direction is the wire channel between the blade 42a and the first guide groove 46, and the movement of the wire channel between the first guide groove 46 and the oil supply wire guide 3 is restricted. In addition, the part of the wire Yb that travels downstream of the blade 42a in the wire travel direction hooked on the rear side of the inner surface of the second guide groove 47 and that is near the blade 42a and to the right of the blade 42a ( Figure 4 (b) The oblique part). Therefore, in the wire channel that travels downstream of the blade 42a in the wire travel direction, the only movement of the wire Yb forward and to the right is the wire channel between the blade 42a and the second guide groove 47. The movement of the wire channel between the second guide groove 47 and the wire restrictor guide 30 is restricted. Through the above, the movement of the wire Yb that has contacted the blade 42a in the direction pressed by the blade 42a, i.e., forward and to the right, is restricted at both the upstream and downstream sides of the cutter 42 in the wire travel direction.

[0078] As described above, the blade portion 42a is formed such that it is located on the upper side as it moves from the front side to the rear side in the front-rear direction, and its tilt angle θ3 relative to the vertical direction when viewed from the left-right direction is within the range of 25 degrees to 45 degrees (see reference). Figure 5 Therefore, during the period from when the blade portion 42a contacts the thread Yb until the thread Yb is cut, the contact portion of the blade portion 42a with the thread Yb changes from the upper and rear sides to the lower and front sides along the inclination of the blade portion 42a as viewed from the left and right directions.

[0079] like Figure 7 As shown, the multiple threads Y arranged in the left-right direction are guided towards the cutting edge 42a by the first thread guide 44 and the second thread guide 45 as the bobbin 51 moves to the right, and are cut one by one in the aforementioned order. Then, the cut threads Y are attracted by the suction device 43.

[0080] Then, as Figure 8 As shown, when the cylinder component 51 is moved to a predetermined position to the right of the multiple threads Y in the left-right direction, all the arranged multiple threads Y are cut and attracted. Then, with the drive device 70 stopping the cylinder and the movement of the cylinder component 51 stopping, the operator approaches the suction gun S. After the multiple threads Y are cut by the cutter (not shown) at the front end of the suction gun S, the multiple threads Y are attracted and held by the suction gun S. The cylinder is driven by the drive device 70, causing the cylinder component 51 to retract to the left. Then, the suction gun S is used to re-enclose the threads in the thread guide 30.

[0081] (Effect)

[0082] The thread cutting and attracting device 40 of this embodiment is for cutting and attracting multiple threads Y traveling in the thread travel direction in a state arranged in the left-right direction (arrangement direction). The thread cutting and attracting device 40 includes: a cutter 42 having a blade portion 42a for cutting the threads Y and being movable from the left to the right in the left-right direction; a cylinder member 51 (attracting portion) that is movable integrally with the cutter 42 and attracts the multiple threads Y cut by the cutter 42; a first thread guide 44 disposed at a position upstream of the cutter 42 in the thread travel direction and movable integrally with the cutter 42 to guide the threads Y toward the blade portion 42a; and a second thread guide 45 disposed at a position downstream of the cutter 42 in the thread travel direction and movable integrally with the cutter 42 to guide the threads Y toward the blade portion 42a. The first wire guide 44 has a first limiting portion that restricts the movement of the wire Y in the direction in which the wire Y is pressed due to contact with the blade portion 42a, and the second wire guide 45 has a second limiting portion that restricts the movement of the wire Y in the direction in which the wire Y is pressed due to contact with the blade portion 42a. According to this embodiment, when the wire Y contacts the blade portion 42a due to the cutter 42 moving to the right, the movement of the wire Y in the direction pressed by the blade portion 42a is limited at both the upstream and downstream sides of the cutter 42 in the wire travel direction. Therefore, it is possible to suppress the movement of the wire Y in a manner that would cause it to detach from the blade portion 42a, and the wires traveling in a left-right aligned state can be cut and attracted more reliably.

[0083] In the thread cutting and attracting device 40 of this embodiment, a first guide groove 46 for guiding the thread Y toward the blade portion 42a is formed on the first thread guide 44, and a second guide groove 47 for guiding the thread Y toward the blade portion 42a is formed on the second thread guide 45. A portion of the inner surface of the first guide groove 46 constitutes a first limiting portion, and a portion of the inner surface of the second guide groove 47 constitutes a second limiting portion. According to this embodiment, the thread Y can be guided toward the blade portion 42a more reliably by the first guide groove 46 and the second guide groove 47, and the thread Y traveling in a left-right direction can be cut and attracted more reliably.

[0084] In the thread cutting and suction device 40 of this embodiment, when viewed from the vertical direction (thread travel direction), the angle θ2 between the extension direction of the blade portion 42a at the contact point with the thread Y and the direction in which the thread Y is guided by the first guide groove 46 of the first guide 44 and the second guide groove 47 of the second guide 45 is 45 degrees or more and 90 degrees or less. According to this embodiment, when viewed from the thread travel direction, the thread Y can be pressed against the blade portion 42a at an angle of 45 degrees or more and 90 degrees or less relative to the extension direction of the blade portion 42a, thus transmitting a greater force from the blade portion 42a to the thread Y when cutting it. Therefore, the traveling thread Y can be cut more reliably.

[0085] In the thread cutting and suction device 40 of this embodiment, the blade portion 42a extends in a straight line, positioned rearward in the front-rear direction (on one side of the orthogonal direction) as it moves from left to right in the left-right direction. When viewed from the top-bottom direction (thread travel direction), the angle θ2 between the extension direction of the blade portion 42a at the contact point with the thread Y and the rearward direction of the thread Y guided by the first guide groove 46 and the second guide groove 47 is 10 degrees or more and 90 degrees or less. According to this embodiment, compared to the case where the angle between the extension direction of the blade portion 42a at the contact point with the thread Y and the rearward direction of the thread Y guided by the direction viewed from the top-bottom direction is greater than 90 degrees or less than 10 degrees, the thread Y can be guided more appropriately towards the blade portion 42a, which extends obliquely relative to the front-rear direction when viewed from the top-bottom direction. As a result, the traveling thread Y can be cut more reliably.

[0086] In the thread cutting and suction device 40 of this embodiment, the blade portion 42a extends in a straight line, positioned upstream of the thread travel direction from left to right in the left-right direction. Therefore, the blade portion 42a can contact the traveling thread Y when its extension direction is inclined relative to the thread travel direction. Consequently, compared to the case where the blade portion 42a contacts the traveling thread Y when its extension direction is perpendicular to the thread travel direction, the cutting of the blade portion 42a relative to the traveling thread Y is improved, and the thread Y can be easily cut.

[0087] In the wire cutting suction device 40 of this embodiment, the blade portion 42a is formed such that the contact portion with the wire Y changes during the period from contact with the wire Y to the wire Y being cut. When the blade portion 42a is pressed inward by a certain amount or more relative to the wire Y, which is restricted by a portion of the inner surface of the first guide groove 46 (first restricting portion) and a portion of the inner surface of the second guide groove 47 (second restricting portion), the wire Y is cut. The amount of pressure applied by the blade portion 42a required to cut the wire Y depends on the strength of the wire Y, etc. According to this embodiment, during the period from the contact of the wire Y with the blade portion 42a to the amount of pressure applied by the blade portion 42a required to cut the wire Y, thereby cutting the wire Y, the wire Y moves along the blade portion 42a. Therefore, compared to the case where the wire Y is cut by only one part of the blade portion 42a, the load on the blade portion 42a is distributed. Therefore, the traveling thread Y can be cut with less burden on the cutting edge 42a.

[0088] Furthermore, in the thread cutting and suction device 40 of this embodiment, the blade portion 42a, when viewed from the left-right direction, has an inclination angle θ3 of 25 degrees to 45 degrees relative to the thread travel direction (vertical direction). Accordingly, from the moment the thread Y comes into contact with the blade portion 42a until the thread Y is cut, when viewed from the left-right direction, the thread Y moves along the blade portion 42a, whose inclination angle θ3 relative to the thread travel direction is 25 degrees to 45 degrees. This allows for cutting the traveling thread Y with less strain on the blade portion 42a.

[0089] In the wire cutting and suction device 40 of this embodiment, the cutter 42 is a single-blade structure including a single blade portion 42a. Accordingly, compared with a multi-blade structure including two or more blade portions, the cost can be reduced.

[0090] (Modified Example)

[0091] The following describes variations of the above-described embodiments. Wherein, parts having the same structure as the above-described embodiments are given the same reference numerals and their descriptions are omitted as appropriate.

[0092] In the above embodiment, the thread cutting and attracting device 40 is positioned immediately upstream of the thread guide 30 in the thread travel direction, on the left side of the thread channel of the multiple threads Y traveling downstream in the thread travel direction, arranged in a left-right direction. However, the thread cutting and attracting device 40 may also be positioned on the right side of the thread channel of the multiple threads Y. In this case, the cutter 42 and the attracting device 43 of the thread cutting and attracting device 40 move from right to left in the left-right direction, thereby cutting and attracting the multiple threads Y.

[0093] In the above embodiment, the cutter 42, the suction device 43, the first wire guide 44, and the second wire guide 45 can move integrally in the left-right direction as the bobbin 51 moves in the left-right direction. However, the cutter 42, the suction device 43, the first wire guide 44, the second wire guide 45, and the bobbin 51 can also be fixed without moving in the left-right direction. In this case, for example, the wire-restricting wire guide 30, which has a fixed left-right spacing of multiple wires Y, can move in the left-right direction. Then, when the wire Y is cut by the wire-cutting suction device 40, the wire-restricting wire guide 30 moves integrally with the multiple wires Y to the side where the cutter 42, etc., are arranged in the left-right direction, thereby guiding the wire Y to the cutting edge 42a by the first wire guide 44 and the second wire guide 45. Alternatively, a wire guide can be provided separately. This wire guide pulls multiple wires Y, whose left-right spacing is fixed by the wire guide 30, closer to the side where the cutter 42 is arranged in the left-right direction. Furthermore, the cutter 42, the suction device 43, the first wire guide 44, and the second wire guide 45 can be configured to move in the left-right direction of the bobbin 51 in a manner close to the multiple wires Y, and the wire guide 30 and the wire guide can be moved in the left-right direction to bring the multiple wires Y closer to the cutter 42, etc. In any case, when the cutter 42 cuts the wire Y, the relative positions of the cutter 42 and the suction device 43, the first wire guide 44, and the second wire guide 45 integrated with the cutter 42 relative to the multiple wires Y can be displaced from the left to the right in the arrangement direction, i.e., the left-right direction.

[0094] In the above embodiments, such as Figure 4 As shown, when viewed from above, the blade portion 42a extends in a straight line, positioned towards the rear as it moves from left to right. However, for example, it could also be as follows: Figure 9 As shown, when viewed from above, the blade portion 142a extends in a straight line, with the front side facing forward from the left side in the left-right direction. In this case, the front side in the front-back direction corresponds to one side of the orthogonal direction in the present invention. Figure 9As shown, in this modified example, the angle θ4 of the extension direction of the blade portion 142a at the contact point with the thread Y, viewed from the vertical direction, relative to the direction in which the thread Y is guided, is 10 degrees or more and 90 degrees or less. Therefore, compared to the case where the angle θ4 of the extension direction of the blade portion 42a at the contact point with the thread Y, viewed from the vertical direction, is greater than 90 degrees or less than 10 degrees relative to the direction in which the thread Y is guided, the thread Y can be guided more appropriately towards the blade portion 42a, which extends obliquely relative to the direction in the vertical direction. This allows for more reliable cutting of the traveling thread Y. Furthermore, in Figure 9 In the modified structure, when viewed from the vertical direction (the direction of the thread travel), the angle θ4 of the straight extension direction of the cutting edge 142a relative to the extension directions of the first guide groove 46 and the second guide groove 47 (i.e., the direction in which the thread Y is guided) is less than 45 degrees. Furthermore, similar to the above embodiment, when viewed from the vertical direction, the cutting edge may extend in a straight line towards the rear as it moves from the left to the right in the left-right direction. However, in this case, it is preferable that the angle of the extension direction of the cutting edge at the contact point with the thread Y, when viewed from the vertical direction, relative to the rearward direction of the direction in which the thread Y is guided, is 10 degrees or more and 90 degrees or less. Also, in this case, when viewed from the vertical direction (the direction of the thread travel), the angle of the extension direction of the cutting edge at the contact point with the thread Y, relative to the direction in which the thread Y is guided, is preferably 45 degrees or more and 90 degrees or less, as in the above embodiment, but it may also be less than 45 degrees.

[0095] In the above embodiment, a first guide groove 46 for guiding the wire Y-direction toward the cutting edge 42a is formed on the first wire guide 44, and a second guide groove 47 for guiding the wire Y-direction toward the cutting edge 42a is formed on the second wire guide 45. A portion of the inner surface of the first guide groove 46 forms a first limiting portion, and a portion of the inner surface of the second guide groove 47 forms a second limiting portion. However, it is also possible that the first guide groove 46 is not formed on the first wire guide 44, and the second guide groove 47 is not formed on the second wire guide 45. In this case, for example, it is also possible to... Figure 10 As shown, the wire Y is guided to the cutting edge 42a along the side of the rear side of the first wire guide 144 and the side of the front side of the second wire guide 145 in the front-rear direction. Figure 10 This is a top view of the right front end of the modified wire cutting and suction device, viewed from above. The first wire guide 144 is positioned near the front of the paper, and the second wire guide 145 is positioned inside the paper, separated from the cutter 42. Figure 10As shown, the first wire guide 144 and the second wire guide 145 are arranged in a structure that does not overlap when viewed from above. The wire Y is then guided to the cutting edge 42a through the gap between the rear side of the first wire guide 144 and the front side of the second wire guide 145 when viewed from above. In this case, when the wire Yb contacts the cutting edge 42a, as... Figure 10 as well as Figure 11 As shown, the wire Yb is on a portion of the side surface behind the first wire guide 144 ( Figure 10 The oblique portion of the first guide wire 144 and a portion of the front side of the second guide wire 145 in the front-rear direction ( Figure 10 The oblique portion of the second wire guide 145 contacts the blade portion 42a. Thus, by contacting the blade portion 42a, the movement of the wire Y in the direction in which the wire Y is pressed is restricted. That is, in this case, a portion of the rear side surface of the first wire guide 144 in the front-rear direction corresponds to the first restricting portion, and a portion of the front side surface of the second wire guide 145 in the front-rear direction corresponds to the second restricting portion. Alternatively, a guide groove may be formed only on either the first wire guide 44 or the second wire guide 45. In this case, the movement of the wire Y in the direction in which the wire Y is pressed due to contact with the blade portion 42a is restricted by a portion of the inner side surface of the guide groove formed on one of the first wire guide 44 and the second wire guide 45, and a portion of the side surface of the other of the first wire guide 44 and the second wire guide 45.

[0096] In this invention, the first limiting part and the second limiting part restrict the movement of the thread Y in the direction in which the thread Y is pressed due to contact with the blade part 42a, including both fixing the movement of the thread Y in the direction in which the thread Y is pressed and suppressing the movement of the thread Y.

[0097] In the above embodiment, when viewed from the vertical direction (the direction of the thread travel), the angle θ2 of the straight extension direction of the cutting edge 42a relative to the direction in which the thread Y is guided by the first guide groove 46 and the second guide groove 47 is 45 degrees or more and 90 degrees or less. However, the angle θ2 can also be any value less than 45 degrees.

[0098] Furthermore, in the above embodiment, the first guide groove 46 and the second guide groove 47 are straight-extending structures. However, the first guide groove 46 and the second guide groove 47 may also be curved structures, or structures that bend midway. In this case, when viewed from above, the angle between the straight-line extension direction of the blade portion 42a at the contact point with the thread Y and the direction in which the thread Y is guided by the first guide groove 46 and the second guide groove 47 near the blade portion 42a is preferably 45 degrees or more and 90 degrees or less. Furthermore, the first guide groove 46 and the second guide groove 47 may not be formed on the first guide wire 44 and the second guide wire 45. In this case, when viewed from above, the angle between the straight-line extension direction of the blade portion 42a and the direction in which the thread Y is guided by the side of the first guide wire 44 and the side of the second guide wire 45 is preferably 45 degrees or more and 90 degrees or less. Furthermore, when viewed from above, the blade portion 42a may not extend along a straight line, but for example, along a curve. In this case, when viewed from above, the angle between the extension direction of the tangent at the contact point between the cutting edge 42a and the thread Y and the direction in which the thread Y is guided by the first guide groove 46 and the second guide groove 47 is preferably 45 degrees or more and 90 degrees or less. In any case, when viewed from above, the angle between the extension direction of the cutting edge 42a at the contact point with the thread Y and the direction in which the thread Y is guided by the first guide wire 44 and the second guide wire 45 is preferably 45 degrees or more and 90 degrees or less.

[0099] In the above embodiment, the cutter 42 is a single-blade structure including a blade portion 42a. However, it may also be a multi-blade structure including two or more blade portions.

[0100] In the above embodiment, when viewed from above, the first guide groove 46 and the second guide groove 47 extend straight from the opening on the right side, inclined to the left and rearward. However, the first guide groove 46 and the second guide groove 47 may also extend straight from the opening on the right side, inclined to the left and forward, or extend along any curve from the opening on the right side towards the left, or have other shapes. In any case, the angle between the extension direction of the blade portion 42a at the contact point with the thread Y and the direction in which the thread Y is guided by the first guide groove 46 and the second guide groove 47 is preferably 45 degrees or more and 90 degrees or less.

[0101] In the above embodiment, the blade portion 42a extends along a straight line at the end edge of the cutter 42. However, when viewed from the front-back direction, the blade portion 42a may also be a curved shape extending along a curve. In this case, the blade portion 42a is preferably such that, when viewed from the front-back direction (the orthogonal direction of the present invention), the angle of inclination of the tangent at the contact point between the blade portion 42a and the wire travel direction relative to the wire travel direction is 25 degrees or more and 45 degrees or less. Furthermore, the blade portion 42a is preferably such that, when viewed from the left-right direction (the arrangement direction of the present invention), the angle of inclination of the tangent at the contact point between the blade portion 42a and the wire travel direction relative to the wire travel direction is 25 degrees or more and 45 degrees or less. Moreover, the blade portion 42a is preferably such that, when viewed from the wire travel direction, the angle of the tangent at the contact point between the blade portion 42a and the wire Y relative to the direction in which the wire Y is guided by the first wire guide 44 and the second wire guide 45 is 45 degrees or more and 90 degrees or less. Furthermore, when viewed from the front-back direction, with the blade portion 42a in a curved shape, the tangential direction at the contact point between the blade portion 42a and the thread travel direction when viewed from the front-back direction corresponds to the extending direction of the blade portion 42a when viewed from the front-back direction according to the present invention. Furthermore, the tangential direction at the contact point between the blade portion 42a and the thread travel direction when viewed from the left-right direction corresponds to the extending direction of the blade portion 42a when viewed from the left-right direction according to the present invention. Then, the tangential direction at the contact point between the blade portion 42a and the thread Y when viewed from the thread travel direction corresponds to the extending direction of the blade portion 42a and the thread Y when viewed from the thread travel direction according to the present invention.

[0102] In the above embodiment, when viewed from the left-right direction, the tilt angle θ3 of the blade portion 42a relative to the vertical direction is within the range of 25 degrees to 45 degrees. However, the tilt angle θ3 may also be less than 25 degrees or greater than 45 degrees. In this case, the blade portion 42a is preferably formed such that the portion in contact with the thread Y changes during the period from contact with the thread Y until the thread Y is cut.

[0103] In the above embodiment, the blade portion 42a is formed such that it is located on the upper side as it moves from the left side to the right side in the left-right direction (arrangement direction). However, the blade portion 42a may also be formed such that it is located on the lower side as it moves from the left side to the right side in the left-right direction.

[0104] In the above embodiment, a spinning and stretching device for heating and stretching the yarn Y can also be provided. In this case, the spinning and stretching device is disposed between the yarn cutting and suction device 40 and the guide roller 4a.

[0105] In the above embodiment, the plurality of guide plates 30a of the wire-limiting guide 30 extend from the front side to the rear side in the front-rear direction. However, the plurality of guide plates 30a may also extend from the rear side to the front side in the front-rear direction.

Claims

1. A wire cutting and attracting device, characterized in that, multiple wires arranged side-by-side in the arrangement direction and traveling in the wire travel direction are cut and attracted, Possessing: a cutter having a blade portion for cutting the above-mentioned wire; a suction portion integrated with the above-mentioned cutter, which sucks the above-mentioned plurality of wires cut by the above-mentioned cutter; a first wire guide provided at a position on the upstream side of the above-mentioned cutter in the above-mentioned wire travel direction, which is integrated with the above-mentioned cutter and guides the above-mentioned wire toward the above-mentioned blade portion; and a second wire guide provided at a position on the downstream side of the above-mentioned cutter in the above-mentioned wire travel direction, which is integrated with the above-mentioned cutter and guides the above-mentioned wire toward the above-mentioned blade portion, when the above-mentioned cutter cuts the above-mentioned wire, the relative position of the above-mentioned cutter with respect to the above-mentioned plurality of wires shifts from one side to the other side in the above-mentioned arrangement direction, the above-mentioned first wire guide has a first restriction portion that restricts movement of the above-mentioned wire in a direction in which the wire is pressed by contact with the above-mentioned blade portion, the above-mentioned second wire guide has a second restriction portion that restricts movement of the above-mentioned wire in a direction in which the wire is pressed by contact with the above-mentioned blade portion.

2. The wire cutting and sucking device according to claim 1, wherein a first guide groove for guiding the above-mentioned wire toward the above-mentioned blade portion is formed in the above-mentioned first wire guide, a second guide groove for guiding the above-mentioned wire toward the above-mentioned blade portion is formed in the above-mentioned second wire guide, a part of the inner side surface of the above-mentioned first guide groove constitutes the above-mentioned first restriction portion, and a part of the inner side surface of the above-mentioned second guide groove constitutes the above-mentioned second restriction portion.

3. The wire cutting and sucking device according to claim 1 or 2, wherein the above-mentioned blade portion is such that, when viewed from the above-mentioned wire travel direction, the angle of the extension direction at the contact point of the above-mentioned blade portion with the above-mentioned wire with respect to the direction in which the above-mentioned wire is guided by the above-mentioned first wire guide and the above-mentioned second wire guide is 45 degrees or more and 90 degrees or less.

4. The wire cutting and sucking device according to claim 1 or 2, wherein the above-mentioned blade portion is such that, as it goes from the one side to the other side in the above-mentioned arrangement direction, it extends along a straight line on the one side in the wire travel direction and in a direction orthogonal to the above-mentioned arrangement direction, when viewed from the above-mentioned wire travel direction, the angle of the extension direction at the contact point of the above-mentioned blade portion with the above-mentioned wire with respect to the direction in which the above-mentioned wire is guided by the above-mentioned first wire guide and the above-mentioned second wire guide on the one side in the above-mentioned orthogonal direction is 10 degrees or more and 90 degrees or less.

5. The wire cutting and sucking device according to claim 3 or 4, wherein the above-mentioned blade portion is such that, as it goes from the one side to the other side in the above-mentioned arrangement direction, it extends along a straight line on either the upstream side or the downstream side in the wire travel direction.

6. The wire cutting and sucking device according to any one of claims 1 to 5, wherein the above-mentioned blade portion is formed so that the contact portion with the above-mentioned wire changes during the period from when it comes into contact with the wire to when the wire is cut.

7. The wire cutting and sucking device according to claim 6, wherein The above blade portion has an inclination angle of 25 degrees or more and 45 degrees or less with respect to the wire running direction when viewed from the above arrangement direction.

8. The wire cutting suction device according to any one of claims 1 to 7, characterized in that, The above cutter is a single-blade structure including the above blade portion.

Images