Yarn tensioning device capable of being automatically adjusted for textile machine

Abstract

The invention relates to the field of yarn processing, in particular to an automatically adjustable yarn tensioning device for a textile machine, which comprises a mounting bottom plate, second sliding rails are transversely and symmetrically arranged on the mounting bottom plate, and a plurality of yarn tensioning units are transversely and uniformly arranged on the second sliding rails in a sliding manner; according to the yarn tensioning device, the automatic adjusting unit is matched with the tensioning plate pushing mechanism to push the yarn tensioning plate, and all the yarn tensioning units can be automatically adjusted at a time to tighten yarn; in this way, each strand of yarn does not need to be tightened manually, the efficiency is effectively improved, the yarn tensioning plate can be rapidly reset to the initial state when the yarn is fed again through the arranged limiting mechanism, yarn feeding is more convenient through the cooperation of the arranged interval synchronous adjusting unit, and the yarn feeding efficiency is improved. And the efficiency of yarn tensioning adjustment on the spinning machine is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of yarn processing, in particular to an automatically adjustable yarn tensioning device for a textile machine. Background Art

[0002] Yarn is a fine product processed from textile fibers. It is the basic material of textiles. It is usually woven from short fibers, filaments or other materials. It is thin and soft and has certain physical and mechanical properties. Textile machines are used in the preparation process of yarn. The textile machines wind the yarn onto a collecting roller. In this process, in order to ensure the tension of the yarn, multiple movable tensioning wheels are often provided. The loose yarn is tightened by the movement of the tensioning wheel, thereby achieving tension, which is beneficial to the yarn winding. However, most of the tensioning wheels are now adjusted manually. When mass-producing yarn, manual adjustment of single-strand yarn is inefficient and takes a lot of time, which is not conducive to efficient production. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an automatically adjustable yarn tensioning device for a textile machine.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: An automatically adjustable yarn tensioning device for a textile machine comprises a mounting base plate, a second slide rail is symmetrically arranged on the mounting base plate, a plurality of yarn tensioning units are evenly arranged and slidably arranged on the second slide rail in a transverse direction, the yarn tensioning unit comprises a tensioning wheel mounting frame and a yarn tensioning plate rotatably arranged on the tensioning wheel mounting frame, the bottom of the tensioning wheel mounting frame is slidably matched on the second slide rail through a sliding assembly, a first sliding mechanism is connected to the bottom of the tensioning wheel mounting frame, a second sliding mechanism is fixedly connected to one side of the first sliding mechanism, the two are fixedly connected by a connecting rod and are respectively adapted to the second slide rails on both sides; An automatic adjustment unit is arranged above the installation base plate, comprising a stepping motor, a rotating shaft driven by the stepping motor, and a plurality of tensioning plate pushing mechanisms evenly distributed along the rotating shaft; The tensioning plate pushing mechanism comprises a pushing mechanism mounting block mounted on the rotating shaft, a pushing mechanism mounting frame fixed on the mounting block, and a first roller connected to the rotating seat through a first telescopic connecting rod, the first roller contacts with a roller stop block on the yarn tensioning plate, and is used to push the yarn tensioning plate to rotate around the rotating mounting block to achieve yarn tensioning; A limiting mechanism is arranged below the yarn tensioning plate, comprising a second telescopic connecting rod and a second roller, for providing elastic support when the yarn tensioning plate is reset; Single yarn adjustment units are provided on both sides of the mounting base, including a screw guide rail, a sliding base and a second servo electric cylinder. The second servo electric cylinder pushes the convex plate of the tensioning plate pushing mechanism through a piston push rod to individually adjust the tension of the single yarn; The yarn tensioning plate is provided with a yarn separation prevention mechanism, which comprises a limiting ring connecting plate and a yarn separation prevention ring, and is used to prevent the yarn from falling off the second tensioning wheel.

[0005] In addition, a preferred structure is that the first sliding mechanism includes a second slider, the second slider is slidably matched on the second slide rail, a first mounting base is installed on the top surface of the second slider, a connecting rod for connecting the second sliding mechanism is fixedly connected to a side wall of one side of the first mounting base, a tensioning wheel mounting frame is fixedly connected to the top column of the first mounting base, and a single rod bearing is provided on the bottom outer wall of the first mounting base; The second sliding mechanism includes a third slider, which is slidably engaged on the second slide rail. A second mounting base is installed on the top surface of the third slider. A side wall of one side of the second mounting base is fixedly connected to the other end of the connecting rod away from the first mounting base. A first tensioning wheel is rotatably arranged on the top frame of the second mounting base.

[0006] In addition, a preferred structure is that the spacing synchronization adjustment unit includes a first slide rail, the first slide rail is longitudinally symmetrically arranged on both sides of the second slide rail, the top of the first slide rail on both sides is slidably matched with a spacing synchronization adjustment plate for adjusting the spacing of the yarn tensioning unit, the upper surface of the mounting base plate is symmetrically arranged on one side of the spacing synchronization adjustment plate, and the end of the piston rod at the output end of the first servo electric cylinder is assembled and connected with the spacing synchronization adjustment plate; The spacing synchronization adjustment plate is provided with a plurality of limit slide grooves with different deflection angles, the single rod bearing is arranged at the limit slide groove, and the first sliding blocks for slidingly fitting on the first sliding rail are symmetrically arranged at the bottom of both sides of the spacing synchronization adjustment plate body.

[0007] In addition, a preferred structure is that the tension plate pushing mechanism mounting plate comprises a first semicircular arc mounting block and a connecting frame, and the first semicircular arc mounting block and the connecting frame are symmetrically mounted on both sides of the pushing mechanism mounting block; A second semicircular arc mounting block is provided on one side of the connecting frame, and a pushing mechanism mounting plate is provided on the other side. The second semicircular arc mounting block is buckled with the first semicircular arc mounting block on both sides of the pushing mechanism mounting block, and a tensioning plate pushing mechanism is installed on the pushing mechanism mounting plate body; The tensioning plate pushing mechanism comprises a pushing mechanism mounting frame, which is mounted on the pushing mechanism mounting plate, a first telescopic connecting rod is vertically arranged on the upper surface of the bottom plate of the pushing mechanism mounting frame, a rotating seat is fixedly connected to the top of the telescopic rod body at the top of the first telescopic connecting rod, a convex plate is arranged on one side of the rotating seat, a first roller is rotatably arranged on the rotating seat, and the first roller is located on one side of the yarn tensioning plate; A first spring is arranged outside the first telescopic connecting rod, one end of the first spring is connected to the rotating seat, and the other end is connected to the upper surface of the bottom plate of the pushing mechanism mounting frame.

[0008] In addition, a preferred structure is that a plurality of guide ring fixing rods are evenly arranged and fixedly connected to the side edges of both sides of the mounting base plate in a transverse direction, the top of each guide ring fixing rod is provided with a first guide ring, and a single yarn adjustment unit is provided on the upper surface of the mounting base plate between the yarn tensioning unit and the automatic adjustment unit; The single yarn adjustment unit comprises a screw rail, on which a single yarn adjustment mechanism is slidably matched, and a driving motor for driving the screw rail is arranged on a frame body located on one side of the screw rail on the upper surface of the mounting base plate; The single yarn adjustment mechanism includes a sliding base, which is slidably matched on the screw slide rail. A second servo electric cylinder is vertically installed on the upper surface of the sliding base. A piston push rod is installed at the top output end of the second servo electric cylinder, and the piston push rod is used to push the convex plate.

[0009] In addition, a preferred structure is that the tension wheel mounting frame includes a support rod, the bottom of the support rod is fixed to the top of the column at the top of the first mounting base, the top of the support rod is provided with a yarn tensioning plate mounting seat for mounting the yarn tensioning plate, and a limit frame is provided on the support rod at one side of the yarn tensioning plate mounting seat; A limiting mechanism is provided on a plate body protruding toward the side wall of one side of the yarn tensioning plate mounting seat and below the yarn tensioning plate. A first connecting rod is fixedly connected to the side of the support rod away from the automatic adjustment unit, and a second connecting rod is fixedly connected to the side of the support rod away from the first connecting rod.

[0010] In addition, a preferred structure is that a third tensioning wheel is rotatably arranged at the other end of the first connecting rod away from the support rod, and a second guide ring is symmetrically arranged at the bottom of the plate body at the other end of the second connecting rod away from the support rod; A rotatable mounting block for mounting the yarn tensioning plate is rotatably arranged on the yarn tensioning plate mounting seat, and the limiting frame comprises a limiting protrusion, which is located below the yarn tensioning plate.

[0011] In addition, a preferred structure is that the limiting mechanism includes a second telescopic connecting rod, one end of the second telescopic connecting rod is arranged on a plate body protruding from the side wall of the support rod, and a second roller is arranged at the end of the telescopic rod body at the other end of the second telescopic connecting rod, and the second roller is located below the yarn tensioning plate; A second spring is arranged outside the second telescopic connecting rod, one end of the second spring is fixed to a plate body protruding from the side wall of the supporting rod, and the other end of the second spring is fixedly connected to the seat body of the second roller.

[0012] In addition, a preferred structure is that a mounting groove is opened in the middle of the yarn tensioning plate, a fixing block for connecting with the rotating mounting block is installed at the mounting groove, and a second tensioning wheel is symmetrically rotated and arranged on the surface of the yarn tensioning plate away from the rotating mounting block, and the second tensioning wheel and the first tensioning wheel and the third tensioning wheel are all located in the same plane; The yarn tensioning plate is provided with a yarn detachment prevention mechanism on one side of the second tensioning wheel, and a roller limiting block for contacting the first roller is provided on the surface of the yarn tensioning plate facing the rotating mounting block and close to the automatic adjustment unit.

[0013] In addition, the preferred structure is that the yarn detachment prevention mechanism includes a detachment mechanism mounting frame, which is mounted on the surface of the yarn tensioning plate facing the rotating mounting block, and a third telescopic connecting rod is vertically and symmetrically mounted on the bottom surface of the top plate of the detachment mechanism mounting frame, and the end of the telescopic rod body at the bottom of the third telescopic connecting rod on both sides is fixedly connected to a limit ring connecting plate; A yarn anti-separation ring is arranged at the bottom of the limiting ring connecting plate, and the yarn anti-separation ring is located on one side of the second tensioning wheel. A shift plate is arranged on one side of the limiting ring connecting plate body. A third spring is arranged on the outside of the third telescopic connecting rod, and one end of the third spring is connected to the top of the limiting ring connecting plate, and the other end is connected to the separation mechanism mounting frame.

[0014] The beneficial effects of the present invention are: 1. By setting the automatic adjustment unit in cooperation with the tensioning plate pushing mechanism to push the yarn tensioning plate, all the yarn tensioning units can be automatically adjusted at one time to tighten the yarn, so that there is no need to manually tighten each strand of yarn, which effectively improves the efficiency. The set limit mechanism ensures that the yarn tensioning plate can be quickly reset to the initial state when it is put on the line again, and it is more convenient to put on the line in cooperation with the set spacing synchronization adjustment unit, which effectively improves the efficiency of yarn tensioning adjustment on the textile machine.

[0015] 2. The single-strand yarn adjustment mechanism cooperates with the tensioning plate pushing mechanism to achieve single tensioning of the single-strand yarn when it is loose, and the yarn detachment prevention mechanism can prevent the yarn from falling off from the second tensioning wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the yarn tensioning unit in a contracted state; Figure 2 It is a structural schematic diagram of the yarn tensioning unit in an open state; Figure 3 It is a structural schematic diagram of the top viewing angle of the spacing synchronization adjustment unit; Figure 4 It is a structural schematic diagram of the bottom viewing angle of the spacing synchronization adjustment unit; Figure 5 A schematic diagram of a structure in which a base plate is installed without a spacing synchronization adjustment unit; Figure 6 It is a schematic diagram of the structure of a single yarn tensioning unit located on the second slide rail; Figure 7 It is a schematic diagram of the structure of the automatic adjustment unit and the single yarn adjustment unit; Figure 8 It is a structural schematic diagram of a single yarn adjustment mechanism; Fig. 9 is a structural schematic diagram of the rotating shaft; Fig.10 is a structural schematic diagram of a yarn tensioning unit; Fig.11 It is a structural schematic diagram of the installation plate of the tensioning plate pushing mechanism; Fig.12 It is a structural schematic diagram of the tension plate pushing mechanism; Fig.13 It is a structural schematic diagram of the yarn tensioning plate in a tensioned state; Fig.14 It is a structural schematic diagram of the yarn tensioning plate in a loose state; Fig.15 It is a schematic diagram of the structure of the yarn tensioning unit after being disassembled; Fig.16 It is a schematic diagram of the structure after the tension wheel mounting frame and the first sliding mechanism are separated; Fig.17 It is a structural schematic diagram of the limiting mechanism; Fig.18 It is a structural schematic diagram of the yarn tensioning plate from the left side perspective; Fig.19 It is a structural schematic diagram of the yarn tensioning plate from the right side perspective; Fig. 20 It is a structural schematic diagram of the yarn separation prevention mechanism.

[0017] In the figure: 01, synchronous spacing adjustment unit; 011, first servo electric cylinder; 012, first slide rail; 013, synchronous spacing adjustment plate; 0131, limit slide groove; 0132, first slider; 02, yarn tensioning unit; 03, automatic adjustment unit; 031, stepping motor; 032, rotating shaft; 0321, pushing mechanism mounting block; 033, bearing seat; 04, second slide rail; 05, single yarn adjustment unit; 051, lead screw slide rail; 052, single yarn adjustment mechanism; 0521, sliding base; 0522, second servo electric cylinder; 0523, piston push rod; 053, driving motor; 1, mounting base; 11, guide ring fixing rod; 12, first guide ring; 2, first sliding mechanism; 21. Second slider; 22. First mounting base; 23. Connecting rod; 24. Single-rod bearing; 3. Second sliding mechanism; 31. Third slider; 32. Second mounting base; 33. First tensioning wheel; 4. Yarn tensioning plate; 41. Mounting slot; 42. Second tensioning wheel; 43. Roller stopper; 5. Tensioning plate push mechanism mounting plate; 51. First semicircular arc mounting block; 52. Connecting frame; 521. Second semicircular arc mounting block; 522. Push mechanism mounting plate; 6. Tensioning plate push mechanism; 61. Push mechanism mounting frame; 62. First telescopic connecting rod; 63. Rotating seat; 631. Protruding plate; 64. First A roller; 65, a first spring; 7, a tensioning wheel mounting frame; 71, a support rod; 72, a first connecting rod; 721, a third tensioning wheel; 73, a second connecting rod; 731, a second guide ring; 74, a yarn tensioning plate mounting seat; 741, a rotating mounting block; 75, a limiting frame; 751, a limiting protrusion; 8, a limiting mechanism; 81, a second telescopic connecting rod; 82, a second spring; 83, a second roller; 9, a yarn detachment prevention mechanism; 91, a detachment mechanism mounting frame; 92, a third telescopic connecting rod; 93, a third spring; 94, a limiting ring connecting plate; 95, a dial plate; 96, a yarn detachment prevention ring; 10, a fixing block. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Reference Figure 1-20A yarn tensioning device with automatic adjustment for a textile machine comprises a mounting base plate 1, on which a second slide rail 04 is symmetrically arranged laterally, on which a plurality of yarn tensioning units 02 are evenly arranged and slidably arranged laterally, a spacing synchronization adjustment unit 01 is arranged on one side of the yarn tensioning unit 02 on the upper surface of the mounting base plate 1, and an automatic adjustment unit 03 is arranged on the upper surface of the mounting base plate 1 above the second slide rail 04, the automatic adjustment unit 03 comprises a stepping motor 031, the stepping motor 031 is mounted on a frame on one side of the second slide rail 04 on the upper surface of the mounting base plate 1, a rotating shaft 032 is assembled and connected at the output end of the stepping motor 031, and the other end of the rotating shaft 032 is away from the stepping motor 031 and is rotatably arranged on a bearing seat 033 installed on the frame on the other side of the second slide rail 04, the stepping motor 031 can realize the deflection of the rotating shaft 032 by a specific angle, so that the tensioning plate pushing mechanism 6 can push the yarn tensioning plate 4 to rotate at different angles.

[0020] A plurality of pushing mechanism mounting blocks 0321 are evenly arranged laterally and symmetrically arranged on the upper side of the rotating shaft 032. Through holes are provided on the pushing mechanism mounting blocks 0321. Tensioning plate pushing mechanism mounting plates 5 are installed on the two symmetrical pushing mechanism mounting blocks 0321. Tensioning plate pushing mechanisms 6 for adjusting the yarn tensioning unit 02 are installed on the tensioning plate pushing mechanism mounting plates 5. The yarn tensioning unit 02 includes a tensioning wheel mounting frame 7. A yarn tensioning plate 4 is rotatably arranged on the tensioning wheel mounting frame 7. The tensioning plate pushing mechanism 6 is used to adjust the yarn tensioning plate 4, and the yarn tensioning plate 4 is used to tension the yarn.

[0021] Among them, a first sliding mechanism 2 is connected to the bottom of the tensioning wheel mounting frame 7, and a second sliding mechanism 3 is fixedly connected to one side of the first sliding mechanism 2. The first sliding mechanism 2 and the second sliding mechanism 3 are respectively slidably matched on the second slide rails 04 on both sides. The first sliding mechanism 2 includes a second slider 21, and the second slider 21 is slidably matched on the second slide rail 04. A first mounting base 22 is installed on the top surface of the second slider 21. A connecting rod 23 for connecting the second sliding mechanism 3 is fixedly connected to the side wall of one side of the first mounting base 22. The top column of the first mounting base 22 is fixedly connected to the tensioning wheel mounting frame 7, and a single-rod bearing 24 is provided on the bottom outer wall of the first mounting base 22. The single-rod bearing 24 is convenient for movement at the spacing synchronization adjustment plate 013.

[0022] The second sliding mechanism 3 includes a third slider 31, and the third slider 31 is slidably fitted on the second slide rail 04. A second mounting base 32 is installed on the top surface of the third slider 31. A side wall of the second mounting base 32 is fixedly connected to the other end of the connecting rod 23 away from the first mounting base 22. A first tensioning wheel 33 is rotatably provided on the top frame of the second mounting base 32, and the first tensioning wheel 33 plays a tensioning role.

[0023] At the same time, the spacing synchronization adjustment unit 01 includes a first slide rail 012, which is longitudinally symmetrically arranged on both sides of the second slide rail 04. The top of the first slide rails 012 on both sides is slidably matched with a spacing synchronization adjustment plate 013 for adjusting the spacing of the yarn tensioning unit 02. The first servo electric cylinder 011 is symmetrically arranged on the upper surface of the installation base plate 1 and located on one side of the spacing synchronization adjustment plate 013. The piston rod end of the output end of the first servo electric cylinder 011 is assembled and connected with the spacing synchronization adjustment plate 013. A plurality of limiting slide grooves 0131 with different deflection angles are opened on the spacing synchronization adjustment plate 013, and a single rod bearing 24 is arranged at the limiting slide groove 0131. The bottom of both sides of the spacing synchronization adjustment plate 013 plate body is symmetrically arranged with a first slider 0132 for slidingly matching on the first slide rail 012. When the spacing synchronization adjustment plate 013 moves, the distance between all the yarn tensioning units 02 changes synchronously.

[0024] Moreover, the tensioning plate pushing mechanism mounting plate 5 includes a first semi-circular arc mounting block 51 and a connecting frame 52. The first semi-circular arc mounting block 51 and the connecting frame 52 are symmetrically mounted on both sides of the pushing mechanism mounting block 0321. A second semi-circular arc mounting block 521 is arranged on one side of the connecting frame 52, and a pushing mechanism mounting plate 522 is arranged on the other side. The second semi-circular arc mounting block 521 is snapped with the first semi-circular arc mounting block 51 on both sides of the pushing mechanism mounting block 0321. A tensioning plate pushing mechanism 6 is installed on the plate body of the pushing mechanism mounting plate 522, and the second semi-circular arc mounting block 521 is used to be installed on the rotating shaft 032.

[0025] Among them, the tensioning plate pushing mechanism 6 includes a pushing mechanism mounting frame 61, which is installed on the pushing mechanism mounting plate 522. A first telescopic connecting rod 62 is vertically arranged on the upper surface of the bottom plate body of the pushing mechanism mounting frame 61. A rotating seat 63 is fixedly connected to the top of the telescopic rod body at the top of the first telescopic connecting rod 62. A convex plate 631 is arranged on one side of the rotating seat 63. A first roller 64 is rotatably arranged on the rotating seat 63. The first roller 64 is located on one side of the yarn tensioning plate 4. A first spring 65 is arranged on the outside of the first telescopic connecting rod 62. One end of the first spring 65 is connected to the rotating seat 63, and the other end is connected to the upper surface of the bottom plate body of the pushing mechanism mounting frame 61. The first spring 65 cooperates with the first telescopic connecting rod 62 to facilitate resetting after the rotating seat 63 is telescoped.

[0026] In addition, a plurality of guide ring fixing rods 11 are evenly arranged and fixedly connected along the horizontal direction at the side edges of both sides of the mounting base 1, and a first guide ring 12 is arranged at the top of each guide ring fixing rod 11. A single-strand yarn adjustment unit 05 is arranged between the yarn tensioning unit 02 and the automatic adjustment unit 03 on the upper surface of the mounting base 1. The single-strand yarn adjustment unit 05 includes a screw guide rail 051, and a single-strand yarn adjustment mechanism 052 is slidably matched on the screw guide rail 051. The upper surface of the mounting base 1 is located on one side of the screw guide rail 051. A driving motor 053 for driving the screw slide rail 051 is arranged on the body, and the single yarn adjusting mechanism 052 includes a sliding base 0521, and the sliding base 0521 is slidably fitted on the screw slide rail 051. A second servo electric cylinder 0522 is vertically installed on the upper surface of the sliding base 0521, and a piston push rod 0523 is assembled at the top output end of the second servo electric cylinder 0522. The piston push rod 0523 is used to push the convex plate 631, thereby driving the rotating seat 63 to cooperate with the first telescopic connecting rod 62 for telescopic extension.

[0027] Moreover, the tensioning wheel mounting frame 7 includes a support rod 71, the bottom of the support rod 71 is fixed to the top of the top column of the first mounting base 22, and a yarn tensioning plate mounting seat 74 for mounting the yarn tensioning plate 4 is arranged on the top of the support rod 71, and a limiting frame 75 is arranged on one side of the yarn tensioning plate mounting seat 74 on the support rod 71, and a limiting mechanism 8 is arranged on the plate body protruding from the side wall of the yarn tensioning plate mounting seat 74 of the support rod 71 and below the yarn tensioning plate 4, a first connecting rod 72 is fixedly connected to the side of the support rod 71 away from the automatic adjustment unit 03, and a second connecting rod 73 is fixedly connected to the side of the support rod 71 away from the first connecting rod 72, and the yarn tensioning plate mounting seat 74 is used to mount the yarn tensioning plate 4.

[0028] In addition, a third tensioning wheel 721 is rotatably arranged at the other end of the first connecting rod 72 away from the support rod 71, and a second guide ring 731 is symmetrically arranged at the bottom of the plate body of the other end of the second connecting rod 73 away from the support rod 71. The second guide ring 731 prevents the yarn from falling onto the automatic adjustment unit 03 below.

[0029] At the same time, a rotating mounting block 741 for mounting the yarn tensioning plate 4 is rotatably provided on the yarn tensioning plate mounting seat 74, and the limiting frame 75 includes a limiting protrusion 751, which is located below the yarn tensioning plate 4. The limiting protrusion 751 is used to resist the yarn tensioning plate 4 to prevent the yarn tensioning plate 4 from rotating counterclockwise.

[0030] Moreover, the limiting mechanism 8 includes a second telescopic connecting rod 81, one end of the second telescopic connecting rod 81 is arranged on a plate body protruding from the side wall of the support rod 71, and a second roller 83 is arranged at the end of the telescopic rod body at the other end of the second telescopic connecting rod 81. The second roller 83 is located below the yarn tensioning plate 4. A second spring 82 is arranged on the outside of the second telescopic connecting rod 81, one end of the second spring 82 is fixed on the plate body protruding from the side wall of the support rod 71, and the other end is fixedly connected to the seat of the second roller 83. The second roller 83 is used to support the yarn tensioning plate 4.

[0031] In addition, a mounting groove 41 is opened in the middle of the yarn tensioning plate 4, and a fixed block 10 for connecting with the rotating mounting block 741 is installed at the mounting groove 41. A second tensioning wheel 42 is symmetrically rotatably arranged on the surface of the yarn tensioning plate 4 away from the rotating mounting block 741. The second tensioning wheel 42 and the first tensioning wheel 33 and the third tensioning wheel 721 are all located in the same plane. The first tensioning wheel 33, the second tensioning wheel 42, and the third tensioning wheel 721 can play a role in tensioning the yarn.

[0032] At the same time, a yarn detachment prevention mechanism 9 is installed on the yarn tensioning plate 4 on one side of the second tensioning wheel 42, and a roller limit block 43 for contacting the first roller 64 is provided on the surface of the yarn tensioning plate 4 facing the rotating mounting block 741 and close to the automatic adjustment unit 03. The roller limit block 43 is used to contact the first roller 64.

[0033] At the same time, the yarn disengagement prevention mechanism 9 includes a disengagement mechanism mounting frame 91, which is mounted on the surface of the yarn tensioning plate 4 facing the rotating mounting block 741, and a third telescopic connecting rod 92 is vertically and symmetrically installed on the bottom surface of the top plate of the disengagement mechanism mounting frame 91. The third telescopic connecting rod 92 on both sides is fixedly connected to a limiting ring connecting plate 94 at the end of the telescopic rod body at the bottom, and a yarn anti-disengagement ring 96 is arranged at the bottom of the limiting ring connecting plate 94. The yarn anti-disengagement ring 96 is located on one side of the second tensioning wheel 42, and a shift plate 95 is arranged on one side of the plate body of the limiting ring connecting plate 94. A third spring 93 is arranged on the outside of the third telescopic connecting rod 92, and one end of the third spring 93 is connected to the top of the limiting ring connecting plate 94, and the other end is connected to the disengagement mechanism mounting frame 91, and the shift plate 95 is used to lift the limiting ring connecting plate 94.

[0034] In this embodiment, when the textile machine is threading yarn, the yarn is relatively loose. At this time, it is necessary to rely on the tensioning adjustment mechanism to adjust the tension of the yarn. First, the yarn is passed through the tensioning adjustment device. At this time, the spacing synchronization adjustment plate 013 makes the spacing between the yarn tensioning units 02 larger, so that the distance between the yarn tensioning units 02 is convenient for the operator to thread the yarn. First, the yarn is passed through the first guide ring 12, and the first guide ring 12 is used to guide the yarn. Then, the yarn is passed from above the third tensioning wheel 721, and then from below the second tensioning wheel 42 close to the third tensioning wheel 721, and then from above the other second tensioning wheel 42, and finally from below the first tensioning wheel 33, and then from the second guide ring 731, and finally from the first guide ring 12 on the other side, thus completing the threading of the single yarn.

[0035] When the yarn tensioning plate 4 is put on line, the yarn detachment prevention mechanism 9 can be used to prevent the yarn from detaching. First, in order to ensure that the yarn can be located between the yarn anti-detachment ring 96 and the wiring groove of the second tensioning wheel 42, the operator turns the dial plate 95 to lift the limiting ring connecting plate 94, and the third telescopic connecting rod 92 and the third spring 93 shrink. At this time, a gap is created between the yarn anti-detachment ring 96 and the second tensioning wheel 42 for the yarn to pass through. At this time, the yarn can be placed between the yarn anti-detachment ring 96 and the wiring groove of the second tensioning wheel 42, and the yarn anti-detachment ring 96 prevents the yarn from detaching from the second tensioning wheel 42.

[0036] After all the yarns are put onto the yarn tensioning unit 02, the textile machine starts working. At this time, the tensioning adjustment can be performed. First, the yarn tensioning units 02 are brought closer to each other through the spacing synchronization adjustment unit 01, so as to ensure that all the tensioning wheels are in the same plane with the first guide ring 12. When adjusting the spacing, the first servo electric cylinder 011 pushes the piston rod to retract, so that the spacing synchronization adjustment plate 013 cooperates with the first slider 0132 on the first slide rail 012. As the spacing synchronization adjustment plate 013 moves, the position of the limiting slide groove 0131 changes, thereby driving the single-rod bearing 24 located at the limiting slide groove 0131 to drive the second slider 21 below to move horizontally on the second slide rail 04, and when the second slider 21 slides, the connecting rod 23 drives the third slider 31 on the other side to slide on the second slide rail 04 on the other side, so that all the yarn tensioning units 02 can be brought closer to each other at the same time.

[0037] When the spacing between the yarn tensioning units 02 is the smallest, the yarn tensioning plates 4 are all moved to one side of the tensioning plate pushing mechanism 6, and can be adjusted by the automatic adjustment unit 03. When the first servo electric cylinder 011 completes the contraction, the spacing between the yarn tensioning units 02 is minimized. At this time, the stepper motor 031 will automatically rotate, thereby rotating the tensioning plate pushing mechanism 6 to slowly contact the yarn tensioning plate 4. As the rotating shaft 032 rotates, the first roller 64 contacts the roller limit block 43, and as the rotating shaft 032 continues to rotate, the first roller 64 will push the yarn tensioning plate 4 rotates counterclockwise with the rotating mounting block 741 as the axis. As the yarn tensioning plate 4 rotates counterclockwise, the limiting mechanism 8 on one side against the yarn tensioning plate 4 will shrink, and the second roller 83 is squeezed by the yarn tensioning plate 4, so that the second telescopic connecting rod 81 and the second spring 82 shrink. At this time, the second tensioning wheels 42 on both sides will contact the yarn on the wheel grooves thereof. As the yarn tensioning plate 4 rotates, the second tensioning wheels 42 will pull the yarn, thereby achieving the purpose of tensioning. After the operator observes that the yarn is tightened, the rotation of the stepper motor 031 can be stopped.

[0038] When the second roller 83 and the first roller 64 on one side of the yarn tensioning plate 4 are pressed against each other, it is ensured that it will not loosen easily after the yarn is tightened. When a yarn is not tightened, the operator can adjust it through the single yarn adjustment mechanism 052. The driving motor 053 drives the sliding base 0521 on the screw slide rail 051 to move to the bottom of the yarn tensioning unit 02 to be adjusted. At this time, the piston push rod 0523 is extended so that the piston push rod 0523 can contact the convex plate 631. The piston push rod 0523 pushes the convex plate 631, so that the rotating seat 63 extends out in cooperation with the first telescopic connecting rod 62, and the first spring 65 is deformed, so that the first roller 64 pushes the yarn tensioning plate 4 to rotate, thereby further tensioning the yarn. In this way, after the yarn tensioning is completed, if there is a single strand of yarn that is not tensioned, and after the piston push rod 0523 is contracted, the first telescopic connecting rod 62 can cooperate with the first spring 65 to release the elastic potential energy and contract, thereby resetting the first roller 64.

[0039] When the winding roller of the textile machine is replaced and the yarn needs to be loosened, the stepper motor 031 only needs to rotate to the initial position. When the yarn tensioning plate 4 is no longer pushed by the tensioning plate pushing mechanism 6, the limiting mechanism 8 will reset the yarn tensioning plate 4, and the second spring 82 releases the elastic potential energy, so that the second telescopic connecting rod 81 extends, so that the second roller 83 pushes the yarn tensioning plate 4 to reset to a horizontal state convenient for threading, and the limiting frame 75 is used to abut against the other side of the yarn tensioning plate 4, so that a new round of threading can be carried out.

[0040] In the present invention, by setting the automatic adjustment unit 03 in cooperation with the tensioning plate pushing mechanism 6 to push the yarn tensioning plate 4, all the yarn tensioning units 02 can be automatically adjusted at one time to tighten the yarn, so that there is no need to manually tighten each strand of yarn, which effectively improves the efficiency. The setting limit mechanism 8 ensures that the yarn tensioning plate 4 can be quickly reset to the initial state when re-online, and cooperates with the setting spacing synchronization adjustment unit 01 to make online more convenient, effectively improving the efficiency of yarn tensioning adjustment on the textile machine.

[0041] Moreover, the single-strand yarn adjusting mechanism 052 cooperates with the tensioning plate pushing mechanism 6 to achieve single tensioning of the single-strand yarn when it becomes loose.

[0042] The yarn-breaking prevention mechanism 9 provided at the same time can prevent the yarn from falling off from under the second tensioning wheel 42 .

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatically adjustable yarn tensioning device for a textile machine, comprising a mounting base (1), characterized in that: The mounting base plate (1) is laterally symmetrically provided with a second slide rail (04), and a plurality of yarn tensioning units (02) are slidably arranged in a laterally uniform manner on the second slide rail (04), and the yarn tensioning unit (02) comprises a tensioning wheel mounting frame (7) and a yarn tensioning plate (4) rotatably provided on the tensioning wheel mounting frame (7), and the bottom of the tensioning wheel mounting frame (7) is slidably engaged on the second slide rail (04) via a sliding assembly, and the bottom of the tensioning wheel mounting frame (7) is connected to a first sliding mechanism (2), and one side of the first sliding mechanism (2) is fixedly connected to a second sliding mechanism (3), and the two are fixedly connected via a connecting rod (23) and are respectively adapted to the second slide rails (04) on both sides; An automatic adjustment unit (03) is arranged above the mounting base plate (1), comprising a stepping motor (031), a rotating shaft (032) driven by the stepping motor (031), and a plurality of tensioning plate pushing mechanisms (6) evenly distributed along the rotating shaft (032), wherein the tensioning plate pushing mechanisms (6) are mounted on a tensioning plate pushing mechanism mounting plate (5); The tensioning plate pushing mechanism (6) comprises a pushing mechanism mounting frame (61), and a first roller (64) connected to a rotating seat (63) via a first telescopic connecting rod (62), wherein the first roller (64) contacts a roller stop block (43) on the yarn tensioning plate (4) and is used to push the yarn tensioning plate (4) to rotate around the rotating mounting block (741) to achieve yarn tensioning; A limit mechanism (8) is provided below the yarn tensioning plate (4), comprising a second telescopic connecting rod (81) and a second roller (83), and is used to provide elastic support when the yarn tensioning plate (4) is reset; Single yarn adjustment units (05) are provided on both sides of the mounting base plate (1), comprising a screw guide rail (051), a sliding base (0521) and a second servo electric cylinder (0522), wherein the second servo electric cylinder (0522) pushes a convex plate (631) of a tensioning plate pushing mechanism (6) via a piston push rod (0523) to individually adjust the tension of a single yarn; The yarn tensioning plate (4) is provided with a yarn separation prevention mechanism (9), comprising a limit ring connecting plate (94) and a yarn separation prevention ring (96), and is used to prevent the yarn from falling off the second tensioning wheel (42).

2. The automatically adjustable yarn tensioning device for a textile machine according to claim 1, characterized in that: The first sliding mechanism (2) comprises a second sliding block (21), the second sliding block (21) is slidably engaged on the second sliding rail (04), a first mounting base (22) is mounted on the top surface of the second sliding block (21), a connecting rod (23) for connecting to the second sliding mechanism (3) is fixedly connected to a side wall of one side of the first mounting base (22), a tension wheel mounting frame (7) is fixedly connected to a top column of the first mounting base (22), and a single rod bearing (24) is arranged on the bottom outer wall of the first mounting base (22); The second sliding mechanism (3) comprises a third slider (31), the third slider (31) is slidably engaged on the second slide rail (04), a second mounting base (32) is mounted on the top surface of the third slider (31), a side wall of one side of the second mounting base (32) is fixedly connected to the other end of the connecting rod (23) away from the first mounting base (22), and a first tensioning wheel (33) is rotatably arranged on the top frame of the second mounting base (32).

3. The automatically adjustable yarn tensioning device for a textile machine according to claim 1, characterized in that: The spacing synchronization adjustment unit (01) comprises a first slide rail (012), the first slide rail (012) being longitudinally symmetrically arranged on both sides of the second slide rail (04), the tops of the first slide rails (012) on both sides being slidably matched with spacing synchronization adjustment plates (013) for adjusting the spacing of the yarn tensioning unit (02), the upper surface of the mounting base plate (1) being symmetrically arranged on one side of the spacing synchronization adjustment plate (013), the piston rod end of the output end of the first servo electric cylinder (011) being assembled and connected with the spacing synchronization adjustment plate (013); The spacing synchronization adjustment plate (013) is provided with a plurality of limit slide grooves (0131) with different deflection angles, the single rod bearing (24) is arranged at the limit slide grooves (0131), and first sliding blocks (0132) for slidingly engaging with the first sliding rail (012) are symmetrically arranged at the bottom of both sides of the spacing synchronization adjustment plate (013).

4. The automatically adjustable yarn tensioning device for a textile machine according to claim 1, characterized in that: The tensioning plate pushing mechanism mounting plate (5) comprises a first semi-circular arc mounting block (51) and a connecting frame (52), wherein the first semi-circular arc mounting block (51) and the connecting frame (52) are symmetrically mounted on both sides of the pushing mechanism mounting block (0321); A second semi-circular arc mounting block (521) is disposed on one side of the connecting frame (52), and a pushing mechanism mounting plate (522) is disposed on the other side; the second semi-circular arc mounting block (521) and the first semi-circular arc mounting block (51) are buckled on both sides of the pushing mechanism mounting block (0321); a tensioning plate pushing mechanism (6) is mounted on the pushing mechanism mounting plate (522); The tensioning plate pushing mechanism (6) comprises a pushing mechanism mounting frame (61), the pushing mechanism mounting frame (61) being mounted on the pushing mechanism mounting plate (522), a first telescopic connecting rod (62) being vertically arranged on the upper surface of the bottom plate body of the pushing mechanism mounting frame (61), a rotating seat (63) being fixedly connected to the top of the telescopic rod body at the top of the first telescopic connecting rod (62), a convex plate (631) being arranged on one side of the rotating seat (63), a first roller (64) being rotatably arranged on the rotating seat (63), and the first roller (64) being located on one side of the yarn tensioning plate (4); A first spring (65) is disposed outside the first telescopic connecting rod (62); one end of the first spring (65) is connected to the rotating seat (63), and the other end is connected to the upper surface of the bottom plate of the pushing mechanism mounting frame (61).

5. The automatically adjustable yarn tensioning device for a textile machine according to claim 1, characterized in that: A plurality of guide ring fixing rods (11) are evenly arranged and fixedly connected in a transverse direction at the side edges of both sides of the mounting base plate (1), and a first guide ring (12) is arranged at the top of each guide ring fixing rod (11). A single yarn adjustment unit (05) is arranged between the yarn tensioning unit (02) and the automatic adjustment unit (03) on the upper surface of the mounting base plate (1); The single-strand yarn adjustment unit (05) comprises a screw guide rail (051), a single-strand yarn adjustment mechanism (052) is slidably matched on the screw guide rail (051), and a driving motor (053) for driving the screw guide rail (051) is arranged on a frame body located on one side of the screw guide rail (051) on the upper surface of the mounting base plate (1); The single-strand yarn adjustment mechanism (052) comprises a sliding base (0521), the sliding base (0521) is slidably engaged on the screw guide rail (051), a second servo electric cylinder (0522) is vertically mounted on the upper surface of the sliding base (0521), a piston push rod (0523) is mounted on the top output end of the second servo electric cylinder (0522), and the piston push rod (0523) is used to push the convex plate (631).

6. The automatically adjustable yarn tensioning device for a textile machine according to claim 1, characterized in that: The tension wheel mounting frame (7) comprises a support rod (71), the bottom of the support rod (71) is fixed to the top of the top column of the first mounting base (22), a yarn tensioning plate mounting seat (74) for mounting the yarn tensioning plate (4) is arranged at the top of the support rod (71), and a limit frame (75) is arranged on one side of the yarn tensioning plate mounting seat (74) on the support rod (71); A limiting mechanism (8) is provided on a plate body protruding from a side wall of the support rod (71) on one side of the yarn tensioning plate mounting seat (74) and located below the yarn tensioning plate (4); a first connecting rod (72) is fixedly connected to a side of the support rod (71) away from the automatic adjustment unit (03); and a second connecting rod (73) is fixedly connected to a side of the support rod (71) away from the first connecting rod (72).

7. The automatically adjustable yarn tensioning device for a textile machine according to claim 6, characterized in that: A third tensioning wheel (721) is rotatably provided at the other end of the first connecting rod (72) away from the support rod (71), and a second guide ring (731) is symmetrically provided at the bottom of the plate body at the other end of the second connecting rod (73) away from the support rod (71); A rotatable mounting block (741) for mounting the yarn tensioning plate (4) is rotatably disposed on the yarn tensioning plate mounting seat (74), and the limiting frame (75) comprises a limiting protrusion (751), wherein the limiting protrusion (751) is located below the yarn tensioning plate (4).

8. The automatically adjustable yarn tensioning device for a textile machine according to claim 6, characterized in that: The limiting mechanism (8) comprises a second telescopic connecting rod (81), one end of the second telescopic connecting rod (81) is arranged on a plate body protruding from the side wall of the support rod (71), and a second roller (83) is arranged at the end of the telescopic rod body at the other end of the second telescopic connecting rod (81), and the second roller (83) is located below the yarn tensioning plate (4); A second spring (82) is disposed outside the second telescopic connecting rod (81); one end of the second spring (82) is fixed to a plate protruding from the side wall of the support rod (71), and the other end is fixedly connected to a seat of the second roller (83).

9. The automatically adjustable yarn tensioning device for a textile machine according to claim 7, characterized in that: A mounting groove (41) is provided in the middle of the yarn tensioning plate (4), a fixed block (10) for connecting to the rotating mounting block (741) is installed at the mounting groove (41), and a second tensioning wheel (42) is symmetrically arranged on the surface of the yarn tensioning plate (4) away from the rotating mounting block (741), and the second tensioning wheel (42) and the first tensioning wheel (33) and the third tensioning wheel (721) are all located in the same plane; A yarn disengagement prevention mechanism (9) is installed on the yarn tensioning plate (4) on one side of the second tensioning wheel (42), and a roller limiting block (43) for contacting the first roller (64) is provided on the surface of the yarn tensioning plate (4) facing the rotating mounting block (741) and on the side close to the automatic adjustment unit (03).

10. The automatically adjustable yarn tensioning device for a textile machine according to claim 9, characterized in that: The yarn detachment prevention mechanism (9) comprises a detachment mechanism mounting frame (91), the detachment mechanism mounting frame (91) being mounted on a surface of the yarn tensioning plate (4) facing the rotating mounting block (741), a third telescopic connecting rod (92) being vertically symmetrically mounted on the bottom surface of the top plate body of the detachment mechanism mounting frame (91), and a limiting ring connecting plate (94) being fixedly connected to the end of the bottom telescopic rod body of the third telescopic connecting rod (92) on both sides; A yarn anti-separation ring (96) is arranged at the bottom of the limiting ring connecting plate (94), and the yarn anti-separation ring (96) is located on one side of the second tensioning wheel (42). A shifting plate (95) is arranged on one side of the plate body of the limiting ring connecting plate (94). A third spring (93) is arranged outside the third telescopic connecting rod (92), and one end of the third spring (93) is connected to the top of the limiting ring connecting plate (94), and the other end is connected to the separation mechanism mounting frame (91).

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