Yarn fixing system

Abstract

The utility model provides a yarn fixing system which solves the problems of yarn weft knitting limiting and the like and comprises a creel, the creel is opposite to a needle cylinder, a yarn fixing assembly is installed on the creel through a rotating assembly, a yarn hooking assembly is arranged between the needle cylinder and the yarn fixing assembly, and a driving assembly for driving a looping assembly in the needle cylinder to move is installed on the creel. The yarn fixing device has the advantages of good yarn fixing effect, stable structure and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of textile equipment, and particularly relates to a yarn fixing system. Background Art

[0002] Knitting circular knitting machines generally fall into two major categories: single-sided series and double-sided series. Through the coordinated work of the needle cylinder and the needle base, the yarn is transformed into fabric. Its working principle is to convert the rotation of the main drive shaft into the up-and-down movement of the needle base. By adjusting the speed and direction of the rotation of the needle cylinder, the actions of the knitting needles are completed, thereby knitting different fabrics. It is usually composed of a frame, a yarn feeding mechanism, a transmission mechanism, a lubrication and dust removal mechanism, an electrical control mechanism, a drawing and winding mechanism, and other auxiliary devices. However, in the actual use process, the existing circular knitting machines lack fixed limits for the yarn and cannot meet complex yarn snagging requirements.

[0003] In order to solve the deficiencies of the existing technology, people have carried out long-term explorations and proposed various solutions. For example, a Chinese patent document discloses a knitting circular knitting machine [202211677003.X], which includes a main body of the machine. Inside the main body of the machine, a stretching and limiting component for stretching the knitted fabric is fixedly installed, and at the bottom of the main body of the machine, a rotating component is fixedly installed. The top of the rotating component is fixedly connected to a side plate, and inside the side plate, a fabric winding roller is actively installed, and a clamping and folding component is installed inside the side plate.

[0004] The above solution solves the problem of yarn supply to a certain extent, but there are still many deficiencies in this solution, such as the lack of fixed limits and the inconvenience of yarn snagging. Summary of the Invention

[0005] The purpose of the utility model is to provide a yarn fixing system with reasonable design and good fixed limit effect for the above problems.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: A yarn fixing system includes a yarn rack opposite to the needle cylinder. A yarn fixing component is installed on the yarn rack through a rotating component. A yarn snagging component is arranged between the needle cylinder and the yarn fixing component. A driving component for driving the loop-forming component inside the needle cylinder to move is installed on the yarn rack.

[0007] In the above-mentioned yarn fixing system, the needle cylinder includes a ring-shaped main cylinder body. Limiting pieces arranged in central symmetry are distributed on the main cylinder body. A limiting groove is arranged between adjacent limiting pieces, and the loop-forming component is arranged in the limiting groove.

[0008] In the above-mentioned yarn fixing system, the loop-forming component includes knitting needles slidably installed up and down in the limiting groove. A hook tongue is movably connected to one side of the needle hook at the top of the knitting needle. A push plate is slidably installed horizontally in the limiting groove, and a push groove is opened at the end of the push plate.

[0009] In the above-mentioned yarn fixing system, the driving component includes a driving block installed on the yarn rack. A driving surface that abuts against the knitting needle and the pushing plate is provided at the top of the driving block. A driving gear and a driving gear ring that mesh with each other for transmission are provided between the driving block and the yarn rack.

[0010] In the above-mentioned yarn fixing system, the rotating component includes a rotating arm rotatably connected to the yarn rack. The rotating arm and the yarn rack are connected by a speed-changing gear set and are driven by a stepping motor.

[0011] In the above-mentioned yarn fixing system, the yarn fixing component includes a yarn fixing ring rotatably installed in the yarn rack. The yarn fixing ring is connected to the rotating arm, and a yarn fixing hole for the yarn to pass through is provided on the yarn fixing ring.

[0012] In the above-mentioned yarn fixing system, the yarn hooking component includes a yarn hooking cylinder slidably installed between the yarn fixing ring and the needle cylinder. The yarn hooking cylinder has a hook extending outward and opposite to the yarn fixing hole. A guiding surface that abuts against each other is provided between the yarn rack and the yarn hooking cylinder.

[0013] In the above-mentioned yarn fixing system, the yarn rack includes a central rod arranged vertically. A support base is provided at the lower end of the central rod, and a support plate extending outward is provided in the middle of the central rod. The needle cylinder is movably installed on the support plate.

[0014] In the above-mentioned yarn fixing system, the needle cylinder is made of stainless steel. The needle cylinder is movably installed on the support plate, and a rolling groove and a roller that are in rolling connection with each other are provided therebetween.

[0015] In the above-mentioned yarn fixing system, a light sensor is equipped on the yarn rack, and the light sensor is opposite to the yarn hooking component.

[0016] Compared with the existing technology, the advantages of the present utility model are as follows: The yarn fixing component can move relative to the yarn rack, and the yarn is lifted by the yarn hooking component, so as to ensure the fixing and limiting effect of the yarn; The looping component realizes weft knitting under the driving action, has a high production efficiency, and is applicable to different fiber yarns; The yarn rack provides limiting support for the needle cylinder, and at the same time does not affect the transmission of the rotating component and the yarn fixing component. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a schematic structural diagram of another perspective of the present utility model;

[0019] Figure 3 is a schematic structural diagram of the looping component of the present utility model;

[0020] Figure 4 is a partial schematic diagram of the present utility model;

[0021] In the figure, there are a yarn creel 1, a rotating assembly 2, a rotating arm 21, a yarn fixing assembly 3, a yarn fixing ring 31, a yarn fixing hole 32, a needle cylinder 4, a main cylinder body 41, a limiting piece 42, a limiting groove 43, knitting needles 44, needle hooks 45, latch tongues 46, a push plate 47, a push groove 48, a yarn hooking assembly 5, a yarn hooking cylinder 51, a lifting hook 52, a guiding surface 53, a central rod 54, a support base 55, a support plate 56, a looping assembly 6, a driving assembly 7, a driving block 71, a driving surface 72, a driving gear 73, and a driving gear ring 74. Detailed implementation manners

[0022] The following further elaborates on the present utility model in conjunction with the accompanying drawings and specific implementation manners.

[0023] As Figures 1-4 shown, a yarn fixing system includes a vertically arranged yarn creel 1, and the yarn creel 1 faces the needle cylinder 4, wherein the needle cylinder 4 is arranged in central symmetry relative to the yarn creel 1; in order to ensure the stability of yarn guiding, a yarn fixing assembly 3 is installed on the yarn creel 1 through a rotating assembly 2 to limit the yarn path. A yarn hooking assembly 5 is arranged between the needle cylinder 4 and the yarn fixing assembly 3. When the yarn fixing assembly 3 rotates driven by the rotating assembly 2, the yarn hooking assembly 5 lifts the yarn, thereby changing the shape of the yarn and facilitating other knitting operations; a driving assembly 7 for driving the looping assembly 6 inside the needle cylinder 4 to move is installed on the yarn creel 1, and the driving assembly 7 provides driving force for the looping assembly 6, and the needle cylinder 4 rotates while the yarn fixing assembly 3 remains fixed.

[0024] Specifically, similar to the structure of an existing circular weft knitting machine, the needle cylinder 4 includes an annular main cylinder body 41, and limiting pieces 42 arranged in central symmetry are distributed on the main cylinder body 41. A limiting groove 43 is arranged between adjacent limiting pieces 42, and the looping assembly 6 is arranged in the limiting groove 43, which can meet the complex weft knitting requirements of a large number of yarns in cooperation with an external yarn feeding structure.

[0025] In-depth, in order to guide the yarn to bend into loops in sequence, the looping assembly 6 includes knitting needles 44 slidably installed up and down in the limiting groove 43. One side of the needle hook 45 at the top of the knitting needle 44 is movably connected with a latch tongue 46. A push plate 47 is slidably installed horizontally in the limiting groove 43, and a push groove 48 is opened at the end of the push plate 47. When the knitting needle 44 rises, the latch tongue 46 opens, and when the knitting needle 44 descends, the needle hook 45 is closed to realize the yarn pulling into loops, and the push plate 47 is synchronously linked to push the yarn step by step.

[0026] Furthermore, the drive assembly 7 provides a circumferential driving torque for the needle cylinder 4, specifically comprising a drive block 71 mounted on the yarn frame 1, a drive surface 72 is provided on the top of the drive block 71 to press against the knitting needle 44 and the push plate 47, and a drive gear 73 and a drive gear ring 74 are provided between the drive block 71 and the yarn frame 1. The external drive motor provides a driving torque for the drive gear 73 and the drive gear ring 74, so that the needle cylinder 4 rotates, and the knitting needle 44 and the push plate 47 perform periodic motion on the drive surface 72.

[0027] Furthermore, the rotating component 2 drives the yarn fixing component 3 to change, and can reciprocate back and forth during the knitting process, including a rotating arm 21 rotatably connected to the yarn frame 1. The rotating arm 21 and the yarn frame 1 are connected to the stepper motor through a speed change gear set, and the swing amount and swing frequency of the rotating arm 21 are controlled according to actual needs.

[0028] In addition, the yarn fixing assembly 3 guides the yarn transmission, which includes a yarn fixing ring 31 rotatably installed in the yarn frame 1, the yarn fixing ring 31 is connected to the rotating arm 21, and a yarn fixing hole 32 for the yarn to pass through is opened on the yarn fixing ring 31. The yarn fixing hole 32 corresponds to the loop forming assembly 6 one by one, and the subsequent yarn hooking assembly 5 is linked with the rotating assembly 2.

[0029] Meanwhile, the yarn hooking assembly 5 comprises a yarn hooking cylinder 51 slidably mounted between the yarn fixing ring 31 and the needle cylinder 4, the yarn hooking cylinder 51 has a lifting hook 52 extending outward and opposite to the yarn fixing hole 32, and a guide surface 53 for pressing against each other is arranged between the yarn frame 1 and the yarn hooking cylinder 51. The lifting hook 52 is in the shape of a vertical strip and has a hook groove on the side, and exerts a pulling force on the yarn when the yarn hooking cylinder 51 is lifted.

[0030] It can be seen that the yarn rack 1 includes a vertically arranged center rod 54 , a support seat 55 is arranged at the lower end of the center rod 54 to maintain the support structure, a support plate 56 extending outward is arranged in the middle of the center rod 54 , and the needle cylinder 4 is movably mounted on the support plate 56 .

[0031] Obviously, the needle cylinder 4 is made of stainless steel, and the needle cylinder 4 is movably mounted on the support plate 56 and provided with rolling grooves and rollers that are rollingly connected to each other. When the needle cylinder 4 moves relative to the creel 1, the rolling grooves and rollers provide position limiting, and a protective net is usually installed above the support plate 56.

[0032] Preferably, the creel 1 is equipped with a photo sensor, which is opposite to the yarn hooking assembly 5. When the yarn is transmitted to the yarn fixing assembly 3, the photo sensor monitors the yarn transmission state and determines whether the yarn is pulled by the yarn hooking assembly 5. If the yarn is not detected to be in place, an alarm signal is generated.

[0033] In summary, the principle of this embodiment is as follows: A cylinder 4 is movably installed on a yarn creel 1. A driving assembly 7 provides a driving force to move the loop-forming assembly 6 inside the cylinder 4. The yarn-fixing assembly 3 reciprocates relative to the cylinder 4 under the drive of a rotating assembly 2, and at the same time, a pulling force is applied by a yarn-hooking assembly 5 to drive the yarn to be hooked out.

[0034] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0035] Although terms such as yarn creel 1, rotating assembly 2, rotating arm 21, yarn-fixing assembly 3, yarn-fixing ring 31, yarn-fixing hole 32, cylinder 4, main cylinder body 41, limiting piece 42, limiting groove 43, knitting needle 44, needle hook 45, latch 46, push plate 47, push groove 48, yarn-hooking assembly 5, yarn-hooking cylinder 51, lifting hook 52, guiding surface 53, central rod 54, support base 55, support plate 56, loop-forming assembly 6, driving assembly 7, driving block 71, driving surface 72, driving gear 73, driving gear ring 74 are used more frequently in this article, the possibility of using other terms is not excluded. Using these terms is only for more conveniently describing and explaining the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A yarn fixing system, comprising a yarn rack (1), the yarn rack (1) being opposite to a needle cylinder (4), characterized in that, The yarn frame (1) is provided with a yarn fixing assembly (3) via a rotating assembly (2), a yarn hooking assembly (5) is provided between the needle cylinder (4) and the yarn fixing assembly (3), and a driving assembly (7) for driving the internal loop forming assembly (6) of the needle cylinder (4) to move is installed on the yarn frame (1).

2. The fixed yarn system according to claim 1, wherein The needle cylinder (4) comprises a ring-shaped main cylinder body (41), on which are distributed limiting plates (42) arranged in a centrally symmetrical manner, limiting grooves (43) are arranged between adjacent limiting plates (42), and the loop forming component (6) is arranged in the limiting grooves (43).

3. The yarn fixing system according to claim 2, characterized in that, The loop forming assembly (6) comprises a knitting needle (44) slidably mounted in a limiting groove (43) up and down, a hook tongue (46) is movably connected to one side of a needle hook (45) at the top of the knitting needle (44), a push plate (47) is slidably mounted in the limiting groove (43), and a push groove (48) is provided at the end of the push plate (47).

4. The fixed yarn system according to claim 2, wherein The driving assembly (7) comprises a driving block (71) mounted on the yarn frame (1); a driving surface (72) is provided on the top of the driving block (71) for pressing against the knitting needles (44) and the push plate (47); and a driving gear (73) and a driving gear ring (74) are provided between the driving block (71) and the yarn frame (1) for mutually meshing transmission.

5. The fixed yarn system according to claim 1, wherein, The rotating assembly (2) comprises a rotating arm (21) rotatably connected to the yarn frame (1); the rotating arm (21) and the yarn frame (1) are transmission-connected to a stepping motor via a speed-changing gear set.

6. The yarn fixing system according to claim 5, characterized in that The yarn fixing assembly (3) comprises a yarn fixing ring (31) rotatably mounted in the yarn frame (1); the yarn fixing ring (31) is connected to the rotating arm (21); and a yarn fixing hole (32) is provided on the yarn fixing ring (31) for the yarn to pass through.

7. The yarn fixing system according to claim 6, characterized in that, The yarn hooking assembly (5) comprises a yarn hooking cylinder (51) slidably mounted between a yarn fixing ring (31) and a needle cylinder (4); the yarn hooking cylinder (51) has a lifting hook (52) extending outward and opposite to the yarn fixing hole (32); and guide surfaces (53) that press against each other are arranged between the yarn frame (1) and the yarn hooking cylinder (51).

8. A yarn fixing system according to claim 1, characterized in that, The yarn rack (1) comprises a vertically arranged center rod (54), a support seat (55) is arranged at the lower end of the center rod (54), a support plate (56) extending outward is arranged in the middle of the center rod (54), and the needle cylinder (4) is movably mounted on the support plate (56).

9. The fixed yarn system according to claim 8, characterized in that, The needle cylinder (4) is made of stainless steel and is movably mounted on a support plate (56) with rolling grooves and rollers that are rollingly connected to each other being provided therebetween.

10. A yarn fixing system according to claim 1, wherein, The yarn rack (1) is equipped with a photo sensor, and the photo sensor is opposite to the yarn hooking component (5).

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