A yarn guiding device for textile machinery
By using a guide roller structure with reciprocating spiral grooves and adjustment discs in textile mechanical yarn guide equipment, the problems of yarn shake and lateral displacement are solved, and the stability of yarn transmission is achieved and the jumper, wear and breakage is reduced. Effect.
Patent Information
- Application Number
- CN202411243486.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2044-09-05
AI Technical Summary
The yarn is prone to shake after leaving the coiler, resulting in jumping wires, wear, breaking and other conditions when in contact with the yarn guide equipment. The prior art has failed to effectively limit the lateral displacement and jitter of the yarn.
A textile mechanical yarn guide device is designed, including a first guide roller and a second guide roller rotatably connected on the bracket, a reciprocating spiral groove is provided on the first guide roller, the adjustment disc adjusts the distance through the elastic adjustment assembly, and the middle part of the second guide roller A wire groove and a limiting disk are provided to enable adaptive adjustment of the yarn through these structures to avoid jitter and disengagement.
Effectively reduce the shaking amplitude of the yarn after it leaves the spool, prevent jumpers, wear and breakage, and ensure the stability of the yarn transmission process.
Smart Images
Figure CN118753914B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a textile equipment, in particular to a textile machinery yarn guiding equipment applied to the field of textile machinery. Background Art
[0002] Textile machinery refers to various mechanical equipment needed to process natural fibers or chemical fibers into textiles. During the use of textile machinery, the yarn needs to be guided by a yarn guide to accurately place the yarn on the knitting needle and ensure smooth weaving.
[0003] Traditional yarn guides have the following problems during use:
[0004] (1) When the textile machinery is working, the yarn feeding process drives the winding drum to rotate rapidly. When the textile machinery stops working, the winding drum will continue to rotate at a certain angle due to inertia. Part of the yarn on the winding drum continues to be fed, so that the yarn on the yarn guide enters a relaxed state. The yarn in the relaxed state is easy to fall off the yarn guide wheel; the yarn guide is difficult to be firmly connected to the irregularly shaped surface of the textile machinery, which will also cause the yarn to fall off the yarn guide wheel.
[0005] (2) During the contact between the yarn and the yarn guide wheel, the dust attached to the yarn and the sizing agent solidified during the yarn sizing process will adhere to the circumferential surface of the yarn guide wheel. The dust and solidified sizing agent will adhere to the subsequent yarn and have an adverse effect on the subsequent textile processing. Static electricity will be generated during the contact between the yarn and the yarn guide wheel. The yarn with static electricity will also have an adverse effect on the subsequent textile processing.
[0006] In order to solve the problems of yarn easily falling off the yarn guide wheel and dust and slurry static electricity easily adhering to the yarn, a certain textile machinery yarn guide in the market adopts the design of pressing the yarn onto the circumferential surface of the yarn guide wheel and setting up a cleaning mechanism, a sticking mechanism and a static electricity removal mechanism, which has a certain market share.
[0007] The specification of Chinese patent CN114291648B discloses a yarn guide for textile machinery, comprising a mounting seat, two mutually parallel support plates are fixedly mounted on the upper surface of the mounting seat, a yarn guide shaft is rotatably mounted between the two support plates, and a yarn guide wheel is fixedly mounted on the yarn guide shaft; a thread pressing mechanism is symmetrically mounted on the upper surface of the mounting seat at the front and rear ends of the yarn guide wheel; a reversing mechanism is symmetrically mounted on the upper surface of the mounting seat at the front and rear ends of the yarn guide wheel, and a cleaning mechanism and a static elimination mechanism are mounted on the upper surface of the mounting seat. The invention cleans dust attached to the yarn by means of the cleaning mechanism to prevent dust attached to the yarn from adhering to the circumferential surface of the yarn guide wheel; the present invention removes solidified slurry adhered to the yarn guide wheel by means of a sticking mechanism to prevent solidified slurry from adhering to the yarn guide wheel; the present invention performs static elimination treatment on the yarn by means of the static elimination mechanism to prevent the yarn guide wheel from carrying static electricity.
[0008] In the above-mentioned prior art, the limitation of the yarn is only reflected in the vertical plane, and there is a lack of limiting effect on the lateral displacement of the yarn. When the yarn is separated from the winding drum (or an axial device for winding the yarn such as a winding shaft), it is usually easy to vibrate with the same amplitude as the diameter of the winding drum, which can easily cause the yarn to have a lateral displacement on the wire wheel. The prior art does not limit the lateral displacement of the yarn, which can easily lead to hard friction between the yarn and the winding wheel, resulting in skipping, wear, breakage and other conditions, which seriously affect the progress of textile work. Summary of the invention
[0009] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to limit the vibration amplitude of the yarn after it leaves the winding drum (or winding shaft) to avoid yarn skipping, wear, breakage, etc.
[0010] In order to solve the above problems, the present invention provides a yarn guiding device for a textile machinery, comprising a bracket, wherein two ends of the bracket are rotatably connected to a first guide roller and a second guide roller, a reciprocating spiral groove is provided on the first guide roller, and both ends of the first guide roller are elastically mounted with adjustment disks through an elastic adjustment component, and the spacing between the two adjustment disks can be adjusted by the elastic adjustment component;
[0011] A wire groove is provided in the middle of the second guide roller, the inner circle width of the wire groove is smaller than the outer circle width of the wire groove, and two limit plates are symmetrically arranged along the middle of the second guide roller. The two limit plates are elastically slidably connected to the two ends of the second guide roller through elastic limit components.
[0012] In the above-mentioned textile machinery yarn guiding device, by arranging a reciprocating spiral groove on the first guide roller, the yarn can slide in the reciprocating spiral groove when the yarn passes through the first guide roller from the winding shaft, thereby reducing the jitter area under the action of the reciprocating spiral groove, and it is not easy to separate from the first guide roller, thereby achieving the purpose of reducing the jitter amplitude of the yarn after it separates from the winding shaft; secondly, by adjusting the spacing between the two adjusting disks, the left and right movement amplitude of the yarn on the first guide roller can be further adjusted, which is suitable for the wire guiding operation of yarn reels of different diameters; finally, the limit disk on the second guide roller is used to further guide the yarn with a smaller movement amplitude, so that the yarn finally enters the wire guiding groove. During the wire guiding process, the two wire guiding rollers are used to realize adaptive adjustment of the yarn jitter amplitude, thereby avoiding the occurrence of wire jumping, wear, breakage and the like when the yarn contacts the yarn guiding device after separating from the reel.
[0013] As a further supplement to the present application, a third guide roller is installed between the first guide roller and the second guide roller. The third guide roller is slidably connected to the bracket through a tension adjustment structure. When the third guide roller is at the highest point, the horizontal height of the lower end of the third guide roller is lower than the horizontal height of the upper end of the first guide roller or the second guide roller.
[0014] As a further supplement to the present application, thread grooves are provided at both ends of the first guide roller;
[0015] The elastic adjustment component includes an adjusting nut and an adjusting spring. The adjusting nut is threaded on the first guide roller through a thread groove. The adjusting spring is sleeved on the first guide roller and one end of the adjusting spring is fixed to one side of the adjusting nut and the other end is fixed to a side of the adjusting disk away from the middle of the first guide roller. The adjusting disk is movably sleeved on the first guide roller.
[0016] As a further supplement to the present application, a chamfer is provided on the intersecting edge between the side wall of the guide groove and the peripheral side of the second guide roller;
[0017] A conductor slope is arranged on the intersecting edges of the side wall of the two limiting plates on the side close to each other and the peripheral side of the limiting plates, and the width of the conductor slope is a multiple of the width of the conductor groove.
[0018] As a further supplement to the present application, the elastic limiting assembly includes a fixing ring and a shock-absorbing spring. The fixing ring is fixedly sleeved on the second guide roller. The shock-absorbing spring is sleeved around the second guide roller and one end is fixed to one side of the fixing ring and the other end is fixed to the side of the limiting plate away from the middle of the second guide roller.
[0019] As a further supplement to the present application, the tension adjustment structure includes a slide rail, a return spring and a slider. The slide rail is fixed to the side of the bracket close to the first guide roller through a fixed block. The upper and lower ends of the return spring are respectively fixed to the top wall of the slide groove of the slide rail and the upper end of the slider. The slider is slidably connected to the slide groove of the slide rail, and the end of the rotating shaft of the third guide roller rotates through the slider.
[0020] As a further supplement to the present application, a side sliding hole is opened on the side wall of the slide groove of the slide rail, and an adjustment stud that movably passes through the side sliding hole is fixed on one side of the slider. A locking nut is screwed on the end of the adjustment stud away from the slider, and the locking nut is located on the outside of the slide rail.
[0021] As a further supplement to the present application, anti-cut fillets are provided at the intersecting edges between the reciprocating spiral groove and the first guide roller, and anti-cut fillets are also provided at the sharp corners of the reciprocating spiral groove.
[0022] As another improvement of the present application, a plurality of balls are rollingly embedded in the chamfered surface of the wire groove and are distributed in an array along the circumference of the axis of the second guide roller;
[0023] A special-shaped roller is embedded and rolled on the inclined surface of the conductor. The rotation axis of the special-shaped roller is consistent with the extension direction of the inclined surface of the conductor. The diameter of the end of the special-shaped roller close to the central axis of the second guide roller is smaller than the diameter of the end of the special-shaped roller away from the central axis of the second guide roller. There are multiple special-shaped rollers distributed in a circular array along the surface of the inclined surface of the conductor.
[0024] To sum up, by arranging a reciprocating spiral groove on the first guide roller, the yarn can slide in the reciprocating spiral groove when the yarn passes through the first guide roller from the winding shaft, thereby reducing the shaking area under the action of the reciprocating spiral groove and not being easily separated from the first guide roller, thereby achieving the purpose of reducing the shaking amplitude of the yarn after it separates from the winding shaft; secondly, by adjusting the spacing between the two adjusting disks, the left and right movement amplitude of the yarn on the first guide roller can be further adjusted, which is suitable for the wire guiding operation of yarn reels with different diameters; finally, the limit disk on the second guide roller is used to further guide the yarn with a smaller movement amplitude, so that the yarn finally enters the wire guiding groove. During the wire guiding process, the two wire guiding rollers are used to realize adaptive adjustment of the yarn shaking amplitude, thereby avoiding the occurrence of wire jumping, wear, breakage, etc. when the yarn contacts the yarn guiding device after it separates from the wire reel;
[0025] Secondly, by setting the third guide roller, the yarn passes through the first guide roller, the third guide roller and the second guide roller in sequence, and at the same time, a certain tension exists between the first guide roller and the third guide roller and between the second guide roller and the third guide roller, so that the yarn is not easy to escape from the reciprocating spiral groove or the wire groove, thereby ensuring the stability of the yarn transmission process;
[0026] Again, through the setting of the adjusting nut and the adjusting spring, when it is necessary to adjust the width of the conductor part on the first guide roller, it is only necessary to rotate the adjusting nut so that the adjusting nut drives the adjusting disk to move closer to the middle of the first guide roller through the adjusting spring, thereby adjusting the distance between the two adjusting disks, so as to achieve the purpose of adjusting the width of the middle part of the first guide roller; it should be noted that the adjustment of the width requires the side wall of the adjusting disk to be adjusted to the reciprocating intersection of the reciprocating spiral groove, so as to ensure that the yarn smoothly changes direction and moves left and right along the middle part of the first guide roller when passing through the reciprocating spiral groove; at the same time, the adjusting spring prevents the adjusting disk from making hard contact with the yarn, and plays a certain protective role on the adjusting disk itself and the yarn. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 This is a schematic diagram of the overall structure of the first implementation method of the present application;
[0028] Figure 2 This is a schematic structural diagram of the first guide roller, the adjustment disk, and the elastic adjustment assembly of the first embodiment of the present application;
[0029] Figure 3 This is a schematic structural diagram of the second guide roller, the limiting plate and the elastic limiting assembly of the first embodiment of the present application;
[0030] Figure 4 This is a schematic diagram of the third guide roller and tension adjustment structure of the first embodiment of the present application;
[0031] Figure 5This is a cross-sectional view of the yarn passing through the first guide roller, the third guide roller and the second guide roller according to the first embodiment of the present application;
[0032] Figure 6 This is a schematic diagram of adjusting the tension of the yarn guide behind the third guide roller by using the tension adjustment structure in the first embodiment of the present application;
[0033] Figure 7 This is a schematic diagram of using an elastic adjustment component to adjust the width of the first guide roller in the first embodiment of the present application;
[0034] Figure 8 This is a schematic diagram of the installation positions of balls and special-shaped rollers in the second embodiment of the present application.
[0035] Description of the numbers in the figure:
[0036] 1. Bracket; 2. First guide roller; 21. Reciprocating spiral groove; 211. Anti-cut fillet; 22. Threaded groove; 3. Second guide roller; 31. Wire groove; 4. Adjustment disk; 5. Third guide roller; 6. Elastic adjustment assembly; 61. Adjustment nut; 62. Adjustment spring; 7. Limiting disk; 71. Wire slope; 8. Elastic limiting assembly; 81. Fixing ring; 82. Shock-absorbing spring; 9. Tension adjustment structure; 91. Slide rail; 911. Side slide hole; 92. Reset spring; 93. Sliding block; 94. Adjustment stud; 95. Locking nut; 10. Ball; 11. Special-shaped roller. DETAILED DESCRIPTION
[0037] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.
[0038] The first implementation method:
[0039] The present invention provides a yarn guiding device for a textile machinery, see Figure 1 , comprising a bracket 1, the two ends of the bracket 1 are rotatably connected to a first guide roller 2 and a second guide roller 3, the first guide roller 2 is provided with a reciprocating spiral groove 21, both ends of the first guide roller 2 are elastically mounted with an adjustment disk 4 through an elastic adjustment component 6, and the distance between the two adjustment disks 4 can be adjusted by the elastic adjustment component 6;
[0040] A wire groove 31 is opened in the middle of the second guide roller 3, and the inner circle width of the wire groove 31 is smaller than the outer circle width of the wire groove 31. Two limit plates 7 are symmetrically arranged along the middle of the second guide roller 3. The two limit plates 7 are elastically slidably connected to the two ends of the second guide roller 3 through elastic limit components 8.
[0041] Based on the above structure, by arranging a reciprocating spiral groove 21 on the first guide roller 2, when the yarn passes through the first guide roller 2 from the winding shaft (winding drum), the yarn can slide in the reciprocating spiral groove 21, thereby reducing the jitter area under the action of the reciprocating spiral groove 21, and it is not easy to separate from the first guide roller 2, so as to achieve the purpose of reducing the jitter amplitude of the yarn after it separates from the winding shaft; secondly, by adjusting the spacing between the two adjustment disks 4, the left and right movement amplitude of the yarn on the first guide roller 2 can be further adjusted, which is suitable for the wire guiding operation of yarn reels with different diameters; finally, the limit disk 7 on the second guide roller 3 is used to further guide the yarn with a smaller movement amplitude, so that the yarn finally enters the wire guiding groove 31. During the wire guiding process, the two wire guiding rollers (the first guide roller 2 and the second guide roller 3) are used to realize the adaptive adjustment of the yarn jitter amplitude, thereby avoiding the occurrence of wire jumping, wear, breakage and the like when the yarn contacts the yarn guiding equipment after it separates from the reel.
[0042] Figure 1 , Figure 5 and Figure 6 It is shown that a third guide roller 5 is installed between the first guide roller 2 and the second guide roller 3. The third guide roller 5 is slidably connected to the bracket 1 through a tension adjustment structure 9. When the third guide roller 5 is at the highest point, the horizontal height of the lower end of the third guide roller 5 is lower than the horizontal height of the upper end of the first guide roller 2 or the second guide roller 3.
[0043] By setting the third guide roller 5, the yarn passes through the first guide roller 2, the third guide roller 5 and the second guide roller 3 in sequence. At the same time, there is a certain tension between the first guide roller 2 and the third guide roller 5 and between the second guide roller 3 and the third guide roller 5, so that the yarn is not easy to escape from the reciprocating spiral groove 21 or the wire groove 31, thereby ensuring the stability of the yarn during transmission.
[0044] Figure 2 It is shown that both ends of the first guide roller 2 are provided with thread grooves 22;
[0045] The elastic adjustment component 6 includes an adjusting nut 61 and an adjusting spring 62. The adjusting nut 61 is threaded on the first guide roller 2 through the thread groove 22. The adjusting spring 62 is sleeved on the first guide roller 2 and one end is fixed to one side of the adjusting nut 61 and the other end is fixed to the side of the adjusting disk 4 away from the middle of the first guide roller 2. The adjusting disk 4 is movably sleeved on the first guide roller 2.
[0046] By setting the adjusting nut 61 and the adjusting spring 62, when it is necessary to adjust the width of the conductor part on the first guide roller 2, it is only necessary to rotate the adjusting nut 61 so that the adjusting nut 61 drives the adjusting disk 4 to move closer to (or away from) the middle part of the first guide roller 2 through the adjusting spring 62, thereby adjusting the distance between the two adjusting disks 4, so as to achieve the purpose of adjusting the width of the middle part of the first guide roller 2 (the part in contact with the yarn); it should be noted that the adjustment of the width requires the side wall of the adjusting disk 4 to be adjusted to the reciprocating intersection of the reciprocating spiral groove 21, so as to ensure that the yarn smoothly changes direction and moves left and right along the middle part of the first guide roller 2 when passing through the reciprocating spiral groove 21; at the same time, the adjusting spring 62 prevents the adjusting disk 4 from having hard contact with the yarn, and plays a certain protective role on the adjusting disk 4 itself and the yarn.
[0047] Figure 3 It is shown that the intersection edge between the side wall of the guide groove 31 and the peripheral side of the second guide roller 3 is provided with a chamfer;
[0048] A wire slope 71 is provided on the intersecting edges of the side walls of the two limiting plates 7 on the side close to each other and the peripheral side of the limiting plates 7 . The width of the wire slope 71 is a multiple of the width of the wire groove 31 .
[0049] By setting the guide wire inclined surface 71 on the limit plate 7, the yarn with a small amplitude shaking can be concentrated into the guide wire groove 31, thereby ensuring the guide wire function of the guide wire groove 31, shrinking the moving range of the yarn, and finally achieving the effect of the yarn moving in a straight line;
[0050] Figure 3 It is shown that the elastic limiting assembly 8 includes a fixing ring 81 and a shock-absorbing spring 82. The fixing ring 81 is fixedly sleeved on the second guide roller 3. The shock-absorbing spring 82 is sleeved on the circumference of the second guide roller 3 and one end is fixed to one side of the fixing ring 81 and the other end is fixed to the side of the limiting plate 7 away from the middle of the second guide roller 3. Through the arrangement of the fixing ring 81 and the shock-absorbing spring 82, the limiting plate 7 can be elastically slidably connected to the second guide roller 3, thereby avoiding hard contact between the yarn and the limiting plate 7, and providing a certain protection for the limiting plate 7 and the yarn.
[0051] Figure 4The tension adjustment structure 9 is shown to include a slide rail 91, a return spring 92 and a slider 93. The slide rail 91 is fixed to the side of the bracket 1 close to the first guide roller 2 through a fixed block. The upper and lower ends of the return spring 92 are respectively fixed to the top wall of the slide groove of the slide rail 91 and the upper end of the slider 93. The slider 93 is slidably connected in the slide groove of the slide rail 91, and the end of the rotating shaft of the third guide roller 5 rotates and passes through the slider 93. Through the arrangement of the slide rail 91, the return spring 92 and the slider 93, when the yarn passes through the third guide roller 5, the third guide roller 5 tends to move upward due to the force of the yarn. At this time, the elastic force of the return spring 92 can offset the upward movement of the third guide roller 5, ensuring good contact between the third guide roller 5 and the yarn. At the same time, if the force formed between the yarn and the third guide roller 5 is large or small, it can also be adaptively adjusted through the elastic force of the return spring 92, so that the third guide roller 5 can stably guide yarns of various properties.
[0052] Figure 4 It is shown that a side sliding hole 911 is opened on the side wall of one side of the sliding groove of the sliding rail 91, and an adjusting stud 94 that movably passes through the side sliding hole 911 is fixed on one side of the sliding block 93. A locking nut 95 is screwed on the end of the adjusting stud 94 away from the sliding block 93, and the locking nut 95 is located on the outside of the sliding rail 91. By setting the adjusting stud 94 and the locking nut 95, the user can also fix the position of the sliding block 93 by tightening the locking nut 95, thereby fixing the height of the third guide roller 5, thereby achieving the effect of fixing the tension received by the yarn, which is more suitable for various conductor conditions.
[0053] Figure 2 It is shown that anti-cut fillets 211 are provided at the intersecting edges between the reciprocating spiral groove 21 and the first guide roller 2, and anti-cut fillets 211 are also provided at the sharp corners of the reciprocating spiral groove 21. By setting the anti-cut fillets 211, the yarn and the reciprocating spiral groove 21 are protected, the probability of wear of the yarn or the reciprocating spiral groove 21 is reduced, and the service life of the first guide roller 2 is extended.
[0054] Second implementation method:
[0055] Figure 8 It is shown that a plurality of balls 10 are rolled and embedded in the chamfered surface of the guide groove 31 and are distributed in an array along the circumference of the axis of the second guide roller 3;
[0056] A special-shaped roller 11 is rollingly embedded on the conductor inclined surface 71, and the rotation axis of the special-shaped roller 11 is consistent with the extension direction of the conductor inclined surface 71. The diameter of the end of the special-shaped roller 11 close to the central axis of the second guide roller 3 is smaller than the diameter of the end of the special-shaped roller 11 away from the central axis of the second guide roller 3. A plurality of special-shaped rollers 11 are arranged and distributed in a circular array along the surface of the conductor inclined surface 71.
[0057] By setting the ball 10, the friction between the yarn and the chamfered surface of the conductor groove 31 is reduced; by setting the special-shaped roller 11, the friction between the yarn and the conductor bevel 71 is reduced, thereby further reducing the friction between the yarn and the chamfered surface of the conductor groove 31 and between the yarn and the conductor bevel 71, thereby further reducing the probability of yarn wear and providing better protection for the yarn.
[0058] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.
Claims
1. A yarn guiding device for a textile machinery, comprising a bracket (1), wherein two ends of the bracket (1) are rotatably connected to a first guide roller (2) and a second guide roller (3), respectively, and characterized in that: The first guide roller (2) is provided with a reciprocating spiral groove (21), and both ends of the first guide roller (2) are provided with a spiral groove (22); Both ends of the first guide roller (2) are elastically mounted with adjustment disks (4) via elastic adjustment components (6); When the yarn passes through the first guide roller (2) from the winding shaft, the yarn slides in the reciprocating spiral groove (21), thereby reducing the shaking area under the action of the reciprocating spiral groove (21) and not being easily separated from the first guide roller (2), thereby achieving the purpose of reducing the shaking amplitude of the yarn after it separates from the winding shaft; at the same time, by adjusting the distance between the two adjusting disks (4), the left and right movement amplitude of the yarn on the first guide roller (2) can be further adjusted, which is suitable for conducting operations of yarn rolls with different diameters; The elastic adjustment component (6) comprises an adjustment nut (61) and an adjustment spring (62); the adjustment nut (61) is threaded onto the first guide roller (2) via a thread groove (22); the adjustment spring (62) is sleeved onto the first guide roller (2) and one end of the adjustment spring is fixed to one side of the adjustment nut (61) and the other end is fixed to a side of the adjustment disk (4) away from the middle of the first guide roller (2); the adjustment disk (4) is movably sleeved onto the first guide roller (2); and the spacing between the two adjustment disks (4) can be adjusted via the elastic adjustment component (6); When it is necessary to adjust the width of the conductor portion on the first guide roller (2), it is only necessary to rotate the adjusting nut (61) so that the adjusting nut (61) drives the adjusting disk (4) to move closer to the middle of the first guide roller (2) through the adjusting spring (62), thereby adjusting the distance between the two adjusting disks (4) and adjusting the side walls of the two adjusting disks (4) to the reciprocating intersection of the reciprocating spiral groove (21), thereby ensuring that the yarn smoothly changes direction and moves left and right along the middle portion of the first guide roller (2) when passing through the reciprocating spiral groove (21), thereby achieving the purpose of adjusting the width of the middle portion of the first guide roller (2); Wherein, an anti-cutting fillet (211) is provided at the intersection edge between the reciprocating spiral groove (21) and the first guide roller (2), and an anti-cutting fillet (211) is also provided at the sharp corner of the reciprocating spiral groove (21); A wire groove (31) is provided in the middle of the second guide roller (3), the inner circle width of the wire groove (31) is smaller than the outer circle width of the wire groove (31), two limit plates (7) are symmetrically arranged along the middle of the second guide roller (3), and the two limit plates (7) are elastically slidably connected to the two ends of the second guide roller (3) through elastic limit components (8); The yarn with a smaller movement amplitude is further guided by the limiting disk (7) on the second guide roller (3), so that the yarn finally enters the guide wire groove (31); A third guide roller (5) is installed between the first guide roller (2) and the second guide roller (3); the third guide roller (5) is slidably connected to the bracket (1) via a tension adjustment structure (9); when the third guide roller (5) is at the highest point, the horizontal height of the lower end of the third guide roller (5) is lower than the horizontal height of the upper end of the first guide roller (2) or the second guide roller (3).
2. A textile machinery yarn guiding device according to claim 1, characterized in that: A chamfer is provided on the intersecting edge between the side wall of the guide groove (31) and the peripheral side of the second guide roller (3); A wire slope (71) is provided on the intersecting edges of the side walls of the two limiting plates (7) on the side close to each other and the peripheral side of the limiting plates (7), and the width of the wire slope (71) is a multiple of the width of the wire groove (31).
3. A yarn guiding device for textile machinery according to claim 1, characterized in that: The elastic limiting assembly (8) comprises a fixing ring (81) and a shock absorbing spring (82), wherein the fixing ring (81) is fixedly sleeved on the second guide roller (3), and the shock absorbing spring (82) is sleeved around the circumference of the second guide roller (3) with one end fixed to one side of the fixing ring (81) and the other end fixed to a side of the limiting plate (7) away from the middle of the second guide roller (3).
4. A yarn guiding device for textile machinery according to claim 2, characterized in that: The tension adjustment structure (9) comprises a slide rail (91), a return spring (92) and a slider (93); the slide rail (91) is fixed to a side of the bracket (1) close to the first guide roller (2) via a fixed block; the upper and lower ends of the return spring (92) are respectively fixed to the top wall of the slide groove of the slide rail (91) and the upper end of the slider (93); the slider (93) is slidably connected to the slide groove of the slide rail (91); and the end of the rotating shaft of the third guide roller (5) rotates and passes through the slider (93).
5. A yarn guiding device for textile machinery according to claim 4, characterized in that: A side sliding hole (911) is formed on a side wall of a sliding groove of the slide rail (91), an adjusting stud (94) movably penetrating the side sliding hole (911) is fixed on one side of the slide block (93), a locking nut (95) is screwed to one end of the adjusting stud (94) away from the slide block (93), and the locking nut (95) is located outside the slide rail (91).
6. A yarn guiding device for textile machinery according to claim 2, characterized in that: A plurality of balls (10) are rollingly embedded in the chamfered surface of the wire groove (31) and are distributed in an array along the circumference of the axis of the second guide roller (3); A special-shaped roller (11) is rotatably embedded on the conductor inclined surface (71); the rotation axis of the special-shaped roller (11) is consistent with the extension direction of the conductor inclined surface (71); the diameter of one end of the special-shaped roller (11) close to the central axis of the second guide roller (3) is smaller than the diameter of one end of the special-shaped roller (11) away from the central axis of the second guide roller (3); a plurality of special-shaped rollers (11) are provided and distributed in a circular array along the surface of the conductor inclined surface (71).