Yarn conveying device for knitting machine

Abstract

The utility model relates to the technical field of knitting machine accessories, in particular to a yarn conveying device for a knitting machine, in which a yarn pressing ring assembly is arranged on a shell and coaxially rotates together with a yarn storage wheel, a poke rod is arranged at the upper end of the yarn pressing ring assembly, and an adjusting assembly connected with the poke rod is arranged in the shell; the adjusting assembly comprises a rotating block of which the middle part is rotationally mounted in the shell, and an adjusting part for driving the rotating block; one end of the rotating block is connected with the poke rod through a tension spring, the driving end of the adjusting part is located on the outer side of the shell, and the inner end of the adjusting part extends into the shell and is connected with the other end of the rotating block; when external force acts on the adjusting part, the rotating block can be driven to rotate along the center of the adjusting part so as to adjust the tightness of the tension spring. The scheme has the advantages that an operator can conveniently, quickly and accurately adjust the yarn storage amount, and the production efficiency and the yarn supply stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of knitting machine accessories, in particular to a yarn feeding device for a knitting machine. Background Art

[0002] like Figure 1 The figure shows a yarn feeding device for a knitting machine, comprising a housing A, a yarn feed plate assembly F and a yarn guide plate assembly G arranged on the housing A, and a front probe S installed on the yarn guide plate assembly G; a motor stator B and a motor rotor D are installed inside the yarn storage wheel E, and the motor is fixed to the housing through the shaft on the motor stator B; a yarn pressing ring assembly W is installed on the housing A and rotates coaxially with the yarn storage wheel E; a yarn outlet support assembly K is installed below the housing A, a lower yarn break probe component Q is installed on the yarn outlet support assembly K, and a micro switch X is also installed inside the housing A.

[0003] During operation, the knitting machine supplies power to the motor in the yarn feeding device, causing the motor rotor D to rotate with the yarn storage wheel E, thereby pulling the yarn from the bobbin. The yarn passes through the first ceramic ring C, the yarn clearer H2, the yarn clamp H, the front probe ceramic ring R, the second ceramic ring M and the third ceramic ring N on the yarn guide plate assembly G, and is then wound around the circumferential surface of the yarn storage wheel E. When the yarn stored on the circumference of the yarn storage wheel E reaches a predetermined amount, the yarn pushes the yarn pressure ring assembly W to swing, causing the toggle lever Y fixed to the yarn pressure ring assembly W to toggle the microswitch X, and the control circuit to stop the motor rotation. When the knitting machine needs yarn, the knitting needle can pull the yarn downward from the yarn storage wheel E in sequence, passing through the tension ring L, the fourth ceramic ring T, the lower yarn breakage detector component Q, and the fifth ceramic ring U, and then input into the knitting machine.

[0004] When the yarn at the front end of the yarn storage wheel E breaks, the ceramic ring R of the front probe falls down, and the other end S1 of the front probe S contacts the contact piece S2, the circuit is turned on and the output signal controls the knitting machine to stop; when the yarn coming out of the lower end of the yarn storage wheel E breaks, since the yarn cannot press the lower probe Q1 of the lower yarn break probe component Q, under the tension of the internal tension spring, the lower probe Q1 bounces upward, and the iron sheet on the lower yarn break probe component Q blocks the optocoupler Q2, thereby outputting a signal to control the knitting machine to stop.

[0005] like Figure 2 As shown, in the existing yarn feeding device, the amount of yarn stored on the circumferential surface of the yarn storage wheel E is determined by the tension between the tension spring Z3 and the toggle rod Y on the yarn pressing ring assembly W. By rotating the adjusting knob Z1, the tension spring Z3 can be tightened or loosened, thereby controlling the amount of yarn stored on the circumferential surface of the yarn storage wheel E.

[0006] When in use, a circle of yarn feeding devices are installed on the circular steel ring on the top of the circular knitting machine. Since the yarn feeding devices are installed at a high height (much higher than the body height) and the distance between adjacent devices is very small, it is very troublesome to turn the adjustment knob Z1, and the position of the adjustment knob Z1 cannot be observed, and it is not convenient to adjust to the required yarn storage amount. Summary of the Invention

[0007] In order to solve the above problems, the purpose of the present invention is to provide a yarn feeding device for a knitting machine, which has the advantages of facilitating the operator to quickly and accurately adjust the yarn storage amount, improve production efficiency and yarn supply stability.

[0008] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0009] The present application provides a yarn feeding device for a knitting machine, and the technical solution is as follows: it includes a shell, a yarn feeding plate assembly and a yarn guide plate assembly arranged on the shell, a front probe rod installed on the yarn guide plate assembly, a motor installed inside the yarn storage wheel and fixed to the shell through the motor shaft, a yarn pressing ring assembly installed on the shell and rotates coaxially with the yarn storage wheel, a yarn output support assembly installed below the shell, and a lower yarn break detection component installed on the yarn output support assembly; a toggle rod is provided at the upper end of the yarn pressing ring assembly, and an adjustment assembly connected to the toggle rod is provided in the shell; the adjustment assembly includes a rotating block rotatably installed in the shell in the middle, and an adjustment component for driving the rotating block; one end of the rotating block is connected to the toggle rod through a tension spring, the driving end of the adjustment component is on the outside of the shell, and the inner end of the adjustment component extends into the shell and is connected to the other end of the rotating block; when external force acts on the adjustment component, it can drive the rotating block to rotate along its center to adjust the tightness of the tension spring.

[0010] Furthermore, the present application also proposes that the adjusting component is constructed as an adjusting screw, the adjusting screw is threadedly engaged with the shell and the inner end of the adjusting screw is abutted against the other end of the rotating block; when the adjusting screw is rotated, the adjusting screw can be driven to move axially relative to the shell, thereby driving the rotating block to rotate along its center.

[0011] Furthermore, the present application also proposes that a fixing seat is provided inside the shell, and an internal threaded hole or a nut is integrally constructed in the fixing seat; the adjusting screw is threadedly engaged with the internal thread or nut of the fixing seat.

[0012] Furthermore, the present application also proposes that an adjustment handle is provided on the outer end portion of the adjustment screw.

[0013] Furthermore, the present application also proposes that a mark is provided on the adjusting handle of the adjusting screw or the side wall of the shell around it.

[0014] Furthermore, the present application also proposes that the fixing seat is provided with a limiting hole on the rear side of the internal threaded hole or the nut, and the inner end of the adjusting screw is tightened through the limiting hole and then connected with the other end of the rotating block.

[0015] Furthermore, the present application also proposes that the limiting hole is constructed as a polygon, and the diameter of the inscribed circle of the polygon is slightly smaller than the outer diameter of the adjusting screw.

[0016] Furthermore, the present application also proposes that the fixing seat is processed by plastic injection molding.

[0017] Furthermore, the present application also proposes that the rotating block is "L"-shaped, the L-shaped corner of the rotating block is rotatably set on the rotating shaft of the shell, and the inner ends of the tension spring and the adjustment component are respectively connected to the two end corners of the rotating block.

[0018] Furthermore, the present application also proposes that a micro switch is also provided inside the shell; when the yarn stored on the circumferential surface of the yarn storage wheel reaches a predetermined amount, the yarn pushes the yarn pressing ring assembly to swing, causing the toggle rod fixed on the yarn pressing ring assembly to toggle the micro switch, and the control circuit causes the motor to stop rotating.

[0019] From the above, it can be seen that the present application provides a yarn feeding device for a knitting machine, comprising a shell, a yarn feeding plate assembly and a yarn guide plate assembly arranged on the shell, a front probe rod installed on the yarn guide plate assembly, a motor installed inside the yarn storage wheel and fixed to the shell through the motor shaft, a yarn pressing ring assembly installed on the shell and rotates coaxially with the yarn storage wheel, a yarn outlet support assembly is installed below the shell, and a lower yarn break detection component is installed on the yarn outlet support assembly; a toggle rod is provided at the upper end of the yarn pressing ring assembly, and an adjusting assembly connected to the toggle rod is provided in the shell; the adjusting assembly includes a rotating block rotatably installed in the shell in the middle, and an adjusting component for driving the rotating block; one end of the rotating block is connected to the toggle rod through a tension spring, the driving end of the adjusting component is on the outside of the shell, and the inner end of the adjusting component extends into the shell and is connected to the other end of the rotating block; when external force acts on the adjusting component, it can drive the rotating block to rotate along its center to adjust the tightness of the tension spring. By setting up the adjustment component, the operator can easily adjust the tightness of the tension spring from the outside of the shell, thereby accurately controlling the yarn storage amount, which has the advantages of facilitating the operator to quickly and accurately adjust the yarn storage amount, improve production efficiency and yarn supply stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Shown is a structural diagram of a yarn feeding device in the prior art.

[0021] Figure 2 Shown is a top view of a yarn feeding device in the prior art.

[0022] Figure 3Shown is a perspective view of a yarn feeding device according to an embodiment.

[0023] Figure 4 Shown is a structural diagram of the yarn feeding device of the embodiment without the upper cover.

[0024] Figure 5 Shown is a three-dimensional view of the adjusting screw fixing seat of the embodiment. DETAILED DESCRIPTION

[0025] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more, unless expressly limited otherwise.

[0028] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0029] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0030] like Figures 3-5 As shown, this embodiment relates to a yarn feeding device for a knitting machine, comprising a shell 1, a yarn feed plate assembly 2 and a yarn guide plate assembly 8 arranged on the shell 1, a front probe 5 installed on the yarn guide plate assembly 8, a yarn storage wheel 9 with a motor installed inside, and fixed to the shell 1 through a motor shaft, a yarn pressing ring assembly 14 installed on the shell 1 and rotating coaxially with the yarn storage wheel 9, a yarn outlet support assembly 15 installed below the shell 1, and a lower yarn break detection component 11 installed on the yarn outlet support assembly 15. During operation, the knitting machine supplies power to the motor in the yarn feeding device, causing the motor to drive the yarn storage wheel 9 to rotate together, thereby pulling the yarn out of the bobbin, passing through the first porcelain ring 3 and the yarn clearer 41 on the yarn feed plate assembly 2, the yarn clamp 4, the front probe 5, the second porcelain ring 6 and the third porcelain ring 7 on the yarn guide plate assembly 8, and then winding on the circumferential surface of the yarn storage wheel 9. When the yarn on the circumferential surface of the yarn storage wheel 9 gradually increases, the yarn pressing ring assembly 14 is pushed to swing. When the yarn on the circumferential surface of the yarn storage wheel 9 reaches a predetermined amount, the output signal control circuit stops the motor from rotating. When the knitting machine needs yarn, the knitting needles of the knitting machine can pull the yarn down from the yarn storage wheel 9 in sequence, and input it into the knitting machine after passing through the tension ring 22, the fourth porcelain ring 10, and the fifth porcelain ring 25.

[0031] Furthermore, a toggle lever 20 is provided at the upper end of the yarn pressing ring assembly 14, and a micro switch is also provided inside the housing 1. When the yarn stored on the circumferential surface of the yarn storage wheel 9 reaches a predetermined amount, the yarn pushes the yarn pressing ring assembly 14 to swing, causing the toggle lever 20 fixed to the yarn pressing ring assembly 14 to toggle the micro switch, and the control circuit stops the motor from rotating. Specifically, the micro switch is configured so that when the yarn storage amount on the yarn storage wheel 9 reaches a predetermined amount, the yarn can push the yarn pressing ring assembly 14 to swing, and then the toggle lever 20 triggers the micro switch, achieving automatic stopping of the motor. As a preferred embodiment, the micro switch can be a mechanical micro switch, whose internal structure includes a spring and a contact. When the toggle lever 20 applies external force, the spring is compressed, the contact closes, and thus triggers the control circuit to stop the motor from rotating. Furthermore, the microswitch can also be an electronic microswitch, whose internal structure includes a sensor and a control chip. When the toggle lever 20 applies external force, the sensor detects the signal and transmits it to the control chip, which issues a command to stop the motor. Thus, through the provision of the microswitch, the present application solves the technical problem of automatically controlling the motor to stop rotating when the amount of yarn stored on the circumferential surface of the yarn storage wheel 9 reaches a predetermined amount. Compared with the prior art, the technical solution of the present application achieves automatic stopping of the motor through the mutual cooperation of the yarn, the yarn pressure ring assembly 14, the toggle lever 20, and the microswitch, avoiding manual intervention and improving work efficiency and safety.

[0032] Furthermore, an adjustment assembly connected to the toggle lever 20 is provided within the housing 1. The adjustment assembly includes a rotating block 33 whose central portion is rotatably mounted within the housing 1, and an adjustment component for driving the rotating block 33; one end of the rotating block 33 is connected to the toggle lever 20 via a tension spring 34, the driving end of the adjustment component is located outside the housing 1, and the inner end of the adjustment component extends into the interior of the housing 1 and is connected to the other end of the rotating block 33; when an external force acts on the adjustment component, the rotating block 33 can be driven to rotate along its center, thereby adjusting the tightness of the tension spring 34. The adjustment assembly cooperates with the rotating block 33 and the adjustment component, so that when an external force acts on the adjustment component, the rotating block 33 can be driven to rotate a certain angle, thereby adjusting the tightness of the tension spring 34. Specifically, one end of the rotating block 33 is connected to the toggle lever 20 via a tension spring 34, the driving end of the adjustment component is located outside the housing 1, and the inner end of the adjustment component extends into the interior of the housing 1 and is connected to the other end of the rotating block 33. As a preferred embodiment, the adjustment component can be constructed as an adjustment screw 31, which is threadedly engaged with the housing 1 and the inner end of the adjustment screw 31 is abutted against the other end of the rotating block 33; when the adjustment screw 31 is rotated, the adjustment screw 31 can be driven to move axially relative to the housing 1, thereby driving the rotating block 33 to rotate along its center. Furthermore, a fixed seat 32 can be provided inside the housing 1, and the fixed seat 32 has an internal threaded hole integrally constructed therein or a nut 35 is provided therein; the adjustment screw 31 is threadedly engaged with the internal thread or nut 35 in the fixed seat 32. Therefore, the design of the adjustment component of the present application solves the technical problem of the difficulty in adjusting the tightness of the tension spring 34 in the yarn feeding device of the knitting machine, and ensures the precise control of the yarn storage amount. Compared with the existing technology, the technical solution of the present application has the advantages of simple operation and high adjustment precision, and can effectively improve the working efficiency of the knitting machine and the control precision of the yarn storage amount.

[0033] like Figure 4As shown, the present application further proposes that the adjustment component is constructed as an adjustment screw 31. The adjustment screw 31 is threadedly connected to the housing 1, and its inner end is abutted against the other end of the rotating block 33. Rotating the adjustment screw 31 can drive the adjustment screw 31 to move axially relative to the housing 1, thereby driving the rotating block 33 to rotate about its center. The adjustment screw 31 is threadedly connected to the housing 1, and its inner end is abutted against the other end of the rotating block 33. By rotating the adjustment screw 31, the adjustment screw 31 can be moved axially relative to the housing 1, thereby driving the rotating block 33 to rotate a certain angle about its center. This design allows the rotating block 33 to adjust its position by rotating the adjustment screw 31, thereby adjusting the tension of the tension spring 34. In a preferred embodiment, a fixing seat 32 can be provided within the housing 1, with an internally threaded hole or a nut 35 integrally formed therein. The adjustment screw 31 is threadedly connected to the internal thread of the fixing seat 32 or the nut 35. Furthermore, an adjustment handle can be provided on the outer end of the adjusting screw 31 for easy operation. In addition, a limiting hole 321 can be provided on the rear side of the internal threaded hole or the nut 35 of the fixing seat 32, and the inner end of the adjusting screw 31 is tightened through the limiting hole 321 and then connected with the other end of the rotating block 33. The limiting hole 321 can be constructed as a polygon, and the diameter of the inscribed circle of the polygon is slightly smaller than the outer diameter of the adjusting screw 31 to ensure the stable connection of the adjusting screw 31. Thus, through the above-mentioned technical means, the present application solves the technical problem of the driving mode of the adjusting assembly. Specifically, by the rotation action of the adjusting screw 31, the precise adjustment of the position of the rotating block 33 is achieved, thereby effectively adjusting the tightness of the tension spring 34. Compared with the prior art, the technical solution of the present application has the advantages of simple operation and high adjustment accuracy, and can better meet the actual needs of the yarn feeding device of the knitting machine.

[0034] In a further embodiment, a fixing seat 32 is provided inside the housing 1, and an internal threaded hole or a nut 35 is integrally constructed inside the fixing seat 32; the adjusting screw 31 is threadedly engaged with the internal thread or nut 35 inside the fixing seat 32. Specifically, the fixing seat 32 can be made of metal or plastic material, and the internal threaded hole can be integrally constructed inside the fixing seat 32 by machining or injection molding. The nut 35 can be fixed in the fixing seat 32 by means of a threaded insert, which can improve the stability and durability of the nut 35. The adjusting screw 31 can be made by a standard thread processing process to ensure its engagement accuracy with the internal threaded hole or the nut 35. In addition, the outer end of the adjusting screw 31 can be provided with an adjustment handle to facilitate manual adjustment by the user. Thus, by providing the fixing seat 32 inside the housing 1 and adopting the design of the internal threaded hole or the nut 35, the adjusting screw 31 can be precisely threadedly engaged with the fixing seat 32. This design ensures the stability and adjustability of the adjusting screw 31 within the housing 1, thereby solving the connection problem between the adjusting screw 31 and the fixing seat 32 inside the housing 1. Compared with the prior art, the technical solution of the present application not only improves the stability of the connection, but also enhances the operability and precision of the adjusting screw 31.

[0035] In addition, the present application also proposes that an adjustment handle is provided on the outer end of the adjustment screw 31. The adjustment handle can be implemented in various forms, for example, it can be a simple knob, a handle with a non-slip texture, or an adjustment handle with a locking function. As a preferred embodiment, the adjustment handle can be designed to be detachable to facilitate the operator to replace or adjust it as needed. In addition, the adjustment handle can also be equipped with a mark to indicate the current adjustment state or position, thereby improving the convenience of operation.

[0036] Thus, by providing an adjustment handle on the outer end of the adjustment screw 31, the operator can more conveniently rotate the adjustment screw 31, thereby achieving precise adjustment of the yarn feeding device. The provision of the adjustment handle makes it easier for the operator to apply force to rotate the adjustment screw 31, improving the convenience and efficiency of operation. Compared with the prior art, the technical solution of the present application solves the technical problem of inconvenient operation of the adjustment screw 31 by adding an adjustment handle, making operation more intuitive and efficient. Furthermore, the present application also proposes providing a numerical indicator on the adjustment handle of the adjustment screw 31 or on the side wall of the housing 1 surrounding it, which provides feedback on the yarn storage amount on the yarn storage wheel 9. The numerical indicator can be implemented as a scale, a digital display, or other form of marking, so that the user can intuitively identify and locate the adjustment screw 31 during operation. For example, the indicator can be provided on the surface of the adjustment handle, or a transparent window can be provided on the side wall of the housing 1 through which the internal scale or digital display can be viewed. Furthermore, the indicator can be made of luminous or reflective material to improve visibility in low-light environments. Therefore, by setting an identification on the adjustment handle of the adjustment screw 31 or the side wall of the shell 1 around it, it is convenient for the user to identify and locate the adjustment screw 31 during operation, thereby improving the convenience and accuracy of the operation. This technical means of setting a numerical identification solves the problem that it is difficult for the user to accurately judge the preset yarn storage amount when operating the adjustment screw 31 in a complex or high-altitude installation environment, thereby ensuring the accuracy of the adjustment. Compared with the prior art, the technical solution of the present application has significant advantages. Specifically, by setting a numerical identification, the user can quickly and accurately judge and adjust the yarn storage amount without relying on complex operating steps or additional tools, which greatly improves the convenience and efficiency of the operation. In addition, the technical solution has a wide range of applicability in practical applications, can effectively solve the operational problems in high-altitude installation environments, and improves the overall performance of the equipment and user experience.

[0037] Furthermore, the present application also proposes that the fixing seat 32 is provided with a limiting hole 321 on the rear side of the internal threaded hole or the nut 35, and the inner end of the adjusting screw 31 is tensioned and passes through the limiting hole 321 to be connected with the other end of the rotating block 33. Specifically, the design of the limiting hole 321 can ensure the stability of the connection between the adjusting screw 31 and the rotating block 33. The limiting hole 321 can be constructed as a polygon, and the diameter of the inscribed circle of the polygon is slightly smaller than the outer diameter of the adjusting screw 31, so that the adjusting screw 31 can produce a tensioning effect when passing through the limiting hole 321, thereby forming a firm connection with the other end of the rotating block 33. In addition, the fixing seat 32 can be processed by plastic injection molding to improve production efficiency and reduce costs. Therefore, by setting the limiting hole 321, the stability of the connection between the adjusting screw 31 and the rotating block 33 is ensured. The design of the restricting hole 321 allows the inner end of the adjusting screw 31 to pass through with tension and abut against the other end of the rotating block 33, thereby maintaining a secure connection during adjustment. This prevents vibration generated by the motor during operation of the yarn feeding device from affecting the displacement of the adjusting screw 31 and ensures the proper operation of the adjustment assembly. Compared with the prior art, the technical solution of the present application effectively solves the problem of stability in the connection between the adjusting screw 31 and the rotating block 33 through the design of the restricting hole 321, thereby improving the operating efficiency and reliability of the yarn feeding device. Furthermore, the present application proposes that the restricting hole 321 is constructed as a polygon, with the diameter of the inscribed circle of the polygon slightly smaller than the outer diameter of the adjusting screw 31 (preferably 0.05-0.2 mm). Specifically, the polygonal design of the restricting hole 321 ensures a stable connection between the adjusting screw 31 and the rotating block 33. By making the inscribed circle of the polygon slightly smaller than the outer diameter of the adjusting screw 31, the adjusting screw 31 can tightly fit within the restricting hole 321 during rotation, thereby improving the secure connection and the accuracy of adjustment. This design effectively solves the problem of looseness or instability that may occur during the rotation of the adjusting screw 31, and ensures the stability and reliability of the yarn feeding device during operation. As a preferred embodiment, the limiting hole 321 can be designed as a regular hexagon, and its inscribed circle diameter is slightly smaller than the outer diameter of the adjusting screw 31, so as to ensure that the adjusting screw 31 can be tightly matched with the limiting hole 321 during rotation. In addition, the limiting hole 321 can also be designed as other polygons, such as a regular octagon or a regular dodecagon, as long as the inscribed circle diameter is slightly smaller than the outer diameter of the adjusting screw 31, the same technical effect can be achieved. Thus, through the polygonal design of the limiting hole 321, the connection stability between the adjusting screw 31 and the rotating block 33 is significantly improved. Compared with the prior art, the technical solution of the present application not only improves the firmness of the connection and the accuracy of the adjustment, but also solves the problem of looseness or instability that may occur during the rotation of the adjusting screw 31, and ensures the stability and reliability of the yarn feeding device during operation.

[0038] Furthermore, the present application proposes that the fixing seat 32 be manufactured using plastic injection molding. This plastic injection molding method allows the fixing seat 32 to be formed in one go using a mold, resulting in high production efficiency and low cost. Plastic materials have excellent wear resistance and corrosion resistance, meeting the requirements for the use of the fixing seat 32 in the yarn feeding device. Furthermore, this material selection ensures that the restricting hole 321 in the fixing seat 32 has a certain degree of elasticity, thereby providing a certain amount of friction when the adjusting screw 31 is screwed into the restricting hole 321, preventing the adjusting screw 31 from loosening. As a preferred embodiment, the fixing seat 32 can be manufactured using injection molding technology, wherein the restricting hole 321 can be designed as a polygon with an inscribed circle diameter slightly smaller than the outer diameter of the adjusting screw 31 to ensure sufficient friction when the adjusting screw 31 is screwed in. Furthermore, the mechanical properties of the fixing seat 32 can be improved by adding reinforcing materials or changing the plastic formulation to adapt to different working environments. Thus, the technical solution of using plastic injection molding for the fixing seat 32 not only solves the technical problem of material selection for the fixing seat 32, but also improves production efficiency and reduces costs. The use of plastic material ensures that the fixing base 32 has excellent wear resistance and corrosion resistance, meeting the requirements of the yarn feeding device. Furthermore, this material selection provides a certain degree of elasticity in the limiting hole 321 of the fixing base 32. This provides a certain amount of friction when the adjusting screw 31 is screwed into the limiting hole 321, preventing the adjusting screw 31 from loosening, thereby improving the stability and reliability of the device.

[0039] Furthermore, the present application proposes that the rotating block 33 is L-shaped, with the L-shaped corner of the rotating block 33 pivotally mounted on the rotating shaft of the housing 1. The inner ends of the tension spring 34 and the adjustment component are respectively connected to the two corners of the rotating block 33. The L-shaped design of the rotating block 33 enables it to rotate on a fixed rotating shaft. This design allows the tension spring 34 and the adjustment component to be connected to the two corners of the rotating block 33, thereby driving and adjusting the rotating block 33. This structure effectively adjusts the tension of the tension spring 34, thereby controlling the amount of yarn stored on the yarn storage wheel 9. In a preferred embodiment, the L-shaped corner of the rotating block 33 can be pivotally mounted on the rotating shaft of the housing 1 via a bearing or similar structure to ensure smooth and stable rotation. The tension spring 34 can be made of spring steel, which has good elasticity and durability, while the adjustment component can be a screw or other mechanical structure, which adjusts the tension of the tension spring 34 by rotating or moving it. Thus, the present application solves the technical problems of the shape and connection of the rotating block 33 by adopting the "L" shape of the rotating block 33 and its connection with the tension spring 34 and the adjustment component. Compared with the prior art, the technical solution of the present application can more effectively adjust the tightness of the tension spring 34, thereby more accurately controlling the yarn storage amount on the yarn storage wheel 9, and improving the stability and reliability of the yarn feeding device.

[0040] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0041] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A yarn feeding device for a knitting machine, comprising a housing (1), a yarn feeding plate assembly (2) and a yarn guide plate assembly (8) arranged on the housing (1), a front probe rod (5) mounted on the yarn guide plate assembly (8), a motor mounted inside a yarn storage wheel (9) and fixed to the housing via a motor shaft, a yarn pressing ring assembly (14) mounted on the housing (1) and coaxially rotating with the yarn storage wheel (9), a yarn outlet support assembly (15) mounted below the housing (1), and a lower yarn breakage detection component (11) mounted on the yarn outlet support assembly (15); a toggle lever (20) is provided at the upper end of the yarn pressing ring assembly (14), and an adjustment assembly connected to the toggle lever (20) is provided in the housing (1); and the characteristics are: The adjustment assembly comprises a rotating block (33) whose middle portion is rotatably mounted in the housing (1), and an adjustment component for driving the rotating block (33); one end of the rotating block (33) is connected to the toggle rod (20) via a tension spring (34); the driving end of the adjustment component is located outside the housing (1); the inner end of the adjustment component extends into the interior of the housing (1) and is connected to the other end of the rotating block (33); when an external force acts on the adjustment component, the rotating block (33) can be driven to rotate along its center, thereby adjusting the tightness of the tension spring (34).

2. A yarn feeding device for a knitting machine according to claim 1, characterized in that: The adjusting component is constructed as an adjusting screw (31), the adjusting screw (31) is threadedly connected to the housing (1), and the inner end of the adjusting screw (31) is abutted against the other end of the rotating block (33); when the adjusting screw (31) is rotated, the adjusting screw (31) can be driven to move axially relative to the housing (1), thereby driving the rotating block (33) to rotate along its center.

3. A yarn feeding device for a knitting machine according to claim 2, characterized in that: A fixing seat (32) is provided inside the housing (1), and an internal threaded hole or a nut (35) is integrally formed inside the fixing seat (32); the adjusting screw (31) is threadedly engaged with the internal thread of the fixing seat (32) or the nut (35).

4. A yarn feeding device for a knitting machine according to claim 2, characterized in that: An adjustment handle is provided on the outer end of the adjustment screw (31).

5. A yarn feeding device for a knitting machine according to claim 4, characterized in that: The adjusting handle of the adjusting screw (31) or the housing side wall around it is provided with a mark.

6. The yarn feeding device for a knitting machine according to claim 3, characterized in that: The fixing seat (32) is provided with a limiting hole (321) at the rear side of the internal threaded hole or the nut (35), and the inner end of the adjusting screw (31) is tensioned and passes through the limiting hole (321) to be connected with the other end of the rotating block (33).

7. A yarn feeding device for a knitting machine according to claim 6, characterized in that: The limiting hole (321) is constructed as a polygon, and the diameter of the inscribed circle of the polygon is slightly smaller than the outer diameter of the adjusting screw (31).

8. The yarn feeding device for a knitting machine according to claim 6, characterized in that: The fixing seat (32) is processed by plastic injection molding.

9. The yarn feeding device for a knitting machine according to claim 1, characterized in that: The rotating block (33) is L-shaped, and the L-shaped corner of the rotating block (33) is rotatably arranged on the rotating shaft of the housing (1). The inner ends of the tension spring (34) and the adjusting component are respectively connected to the two end corners of the rotating block (33).

10. The yarn feeding device for a knitting machine according to claim 1, characterized in that: A micro switch is also provided inside the housing (1); when a predetermined amount of yarn is stored on the circumferential surface of the yarn storage wheel (9), the yarn pushes the yarn pressing ring assembly (14) to swing, causing a toggle rod (20) fixed to the yarn pressing ring assembly (14) to toggle the micro switch, and the control circuit stops the motor from rotating.

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