Yarn conveying device

Abstract

The utility model relates to a yarn conveying device which comprises a machine base, an upper cover installed on the machine base, a yarn storage wheel and a yarn feeding tension control assembly, and the upper cover is provided with a tension controller, an installation chuck and a wire chuck. A wire groove for embedding a wire is formed in the wire chuck, a contact pin is formed on the upper cover at the bottom of the wire groove, and a pressing screw rod is formed at the upper end of the wire groove; the pressing screw rod presses the wire into the wire slot through the wire pressing plate; the tip of the contact pin pierces the outer layer of the wire and is in contact conduction with a copper core on the inner side of the wire; the wire pressing plate is provided with a positioning notch corresponding to the output direction of the pressing screw, and the positioning notch at least comprises an upper inclined surface and a lower inclined surface which are located on the upper side and the lower side of the axial lead of the pressing screw; and when the end part of the pressing screw rod is pressed against the positioning notch, the pressing screw rod is pressed against the upper inclined surface and the lower inclined surface at the same time, so that the electric wire pressing plate is prevented from shifting up and down. The scheme has the advantages of improving the installation stability of the wire pressing plate, reducing operation errors, and improving the installation efficiency and the power supply stability.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery and equipment, and in particular to a yarn feeding device. Background Technology

[0002] like Figure 1 and 2 As shown, the existing yarn feeding device includes a base 1, an upper cover 2, a yarn storage wheel 3, and a yarn feeding tension control component 5 mounted on the base 1. A tension controller 6, a wire clamp 7, and a mounting clamp 4 are installed on the upper cover 2. The yarn feeding device is fixed to the ring of the knitting machine by the mounting clamp 4. During operation, the yarn is pulled out from the yarn bobbin, passes through the yarn frame and the yarn feeding tension control component 5, and is then fed onto the circumferential surface of the yarn feeding wheel 3 of the yarn feeding device. When the knitting machine needs yarn, the knitting elements on the knitting machine can pull the yarn out sequentially from the yarn storage wheel 3, and after passing through the tension controller 6, it is fed into the knitting machine.

[0003] The power supply for the yarn feeding device is input to the circuit board inside the device via wire 9 (a four-core flat wire) and contact pin 10, which then controls the motor's operation. During installation, wire 9 is placed at the outer end of contact pin 10, at the wire groove 90 of the upper cover 2. Wire pressure plate 8 is placed on the flat surface of wire 9. When the clamping screw 12 is tightened inward, the wire pressure plate 8 is pressed against wire 9 and pushed inward. At this time, the tip of contact pin 10 pierces the insulation of the wire. Continue to tighten the clamping screw 12 inward. When the flat surface of wire pressure plate 8 is against the upper surface 111 and lower surface 112 of the outer side of the wire groove 90 of the upper cover 2, the tip of contact pin 10 passes through the center of the copper core of wire 9, ensuring good contact.

[0004] In existing yarn feeding devices, the wire pressure plate 8 is manufactured using rectangular strips of steel, such as... Figure 3 As shown, the top surface of the wire clamping plate is flat. Therefore, when tightening the clamping screw 12, the wire clamping plate 8 must be pushed firmly to ensure that it contacts and presses against the upper surface 111 of the cover 2. Otherwise, when tightening the clamping screw, the friction between the clamping screw 12 and the wire clamping plate 8 will move the wire clamping plate 8 downwards, causing it to shift. This would result in the upper end of the wire clamping plate 8 sliding into the wire groove 90, while the lower end of the wire clamping plate 8 would be interfered with by the protrusion below the wire groove 90 and lifted up. This would cause the tip of the upper contact pin 10 to pierce the insulation of the wire 9 and contact the wire clamping plate 8, resulting in a short circuit in the product. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this utility model is to provide a yarn feeding device that offers advantages such as improved stability of the wire pressure plate installation, reduced operational errors, increased installation efficiency, and enhanced power supply stability.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A yarn feeding device, the technical solution of which is as follows: It includes a machine base, an upper cover mounted on the machine base, a yarn storage wheel, and a yarn feeding tension control assembly. The yarn storage wheel is rotatably mounted on the machine base. The upper cover is equipped with a tension controller, a mounting clamp for fixing the yarn feeding device to a knitting machine, and a wire clamp for fixing electrical wires. The wire clamp has a groove for embedding electrical wires. The upper cover has a contact pin at the bottom of the groove, and a clamping screw at the upper end of the groove. The clamping screw presses the electrical wire into the groove via a wire clamping plate. The tip of the contact pin pierces the outer layer of the electrical wire and makes contact with its inner copper core. The wire clamping plate has a positioning slot corresponding to the output direction of the clamping screw. The positioning slot includes at least an upper inclined surface and a lower inclined surface on both sides above and below the axis of the clamping screw. When the end of the clamping screw presses against the positioning slot, the clamping screw simultaneously presses against the upper and lower inclined surfaces, thereby preventing the wire clamping plate from shifting vertically.

[0008] Furthermore, this application also proposes that the clamping screw corresponds to the center of the wire pressure plate, and the wire pressure plate is provided with a positioning groove at least at its center.

[0009] Furthermore, this application also proposes that the positioning slot is constructed as a conical slot, the axis of the conical slot coincides with the axis of the clamping screw, and the upper and lower inclined surfaces are located on the same conical surface; the end of the clamping screw presses against the conical surface of the positioning slot.

[0010] Furthermore, this application also proposes that the positioning slot is constructed as a V-shaped groove or trapezoidal groove extending in the lateral direction on the wire pressure plate, with the upper and lower inclined surfaces located on the upper and lower sides of the V-shaped groove or trapezoidal groove.

[0011] Furthermore, this application also proposes that the V-shaped groove or trapezoidal groove extends to both end faces of the wire pressure plate, and the wire pressure plate is integrally drawn.

[0012] Furthermore, this application also proposes that the wire clamp has protrusions on the upper and lower sides of the wire groove, and an upper plane and a lower plane are respectively constructed on the protrusions on the upper and lower sides; the width of the wire pressure plate is greater than the width of the wire groove, and when the wire pressure plate presses against the upper plane and the lower plane at the same time, the tip of the contact pin pierces the outer layer of the wire and makes contact with the copper core inside the wire to conduct electricity.

[0013] Furthermore, this application also proposes that the mounting clamp is rotatably mounted on the wire clamp, the mounting clamp has a clamping opening, and a clamping screw is constructed on one side of the clamping opening.

[0014] As can be seen from the above, the yarn feeding device and its wire clamp provided in this application include a machine base, an upper cover, a yarn storage wheel, and a yarn feeding tension control assembly mounted on the machine base. The yarn storage wheel is rotatably mounted on the machine base. A tension controller, a mounting clamp for fixing the yarn feeding device to a knitting machine, and a wire clamp for fixing wires are mounted on the upper cover. A wire groove for embedding wires is constructed on the wire clamp. A contact pin is constructed at the bottom of the wire groove on the upper cover. A clamping screw is constructed at the upper end of the wire groove. The clamping screw presses the wire into the wire groove through the wire clamp. The tip of the contact pin pierces the outer layer of the wire and contacts the copper core on its inner side to conduct electricity. A positioning slot is provided on the wire clamp corresponding to the output direction of the clamping screw. The positioning slot includes at least an upper inclined surface and a lower inclined surface on both sides above and below the axis of the clamping screw. When the end of the clamping screw presses against the positioning slot, the clamping screw presses against both the upper and lower inclined surfaces to prevent the wire clamp from shifting up and down. By setting a positioning slot on the wire clamping plate, the clamping screw presses against both the upper and lower inclined surfaces simultaneously, effectively preventing the wire clamping plate from shifting vertically. This has the advantages of improving the installation stability of the wire clamping plate, reducing operational errors, increasing installation efficiency, and improving power supply stability. Attached Figure Description

[0015] Figure 1 The diagram shown is a structural diagram of an existing yarn feeding device.

[0016] Figure 2 The diagram shows the installation structure of an existing yarn feeding device.

[0017] Figure 3 The image shown is a perspective view of a prior art wire clamping plate.

[0018] Figure 4a The image shown is a three-dimensional view of the first structure of the wire pressure plate of this patent.

[0019] Figure 4b The image shown is a cross-sectional view of the first structural design of the wire clamping plate of this patent.

[0020] Figure 5a The image shown is a perspective view of the second structural design of the wire clamping plate of this patent.

[0021] Figure 5b The image shown is a cross-sectional view of the second structural design of the wire clamping plate of this patent. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] like Figure 1 and 2As shown in 4a-5b, this embodiment relates to a yarn feeding device, including a base 1, an upper cover 2, a yarn storage wheel 3, and a yarn feeding tension control assembly 5 mounted on the base 1. The yarn storage wheel 3 is rotatably mounted on the base 1. A tension controller 6, a mounting clamp 4 for fixing the yarn feeding device to a knitting machine, and a wire clamp 7 for fixing wires are mounted on the upper cover 2. A groove 90 for embedding wires 9 is constructed on the wire clamp 7. A contact pin 10 is constructed at the bottom of the groove 90 on the upper cover 2, and a clamping screw 12 is constructed at the upper end of the groove 90. The clamping screw 12 presses the wires 9 into the groove 90 via a wire clamping plate 8. The tip of the contact pin 10 pierces the outer layer of the wire 9 and makes contact with its inner copper core. A positioning slot 81 is provided on the wire clamping plate 8 corresponding to the output direction of the clamping screw 12. The positioning slot 81 includes at least an upper inclined surface 82 and a lower inclined surface 83 on both sides above and below the axis of the clamping screw 12. When the end of the clamping screw 12 presses against the positioning slot 81, the clamping screw 12 simultaneously presses against the upper inclined surface 82 and the lower inclined surface 83, thereby preventing the wire clamping plate 8 from shifting up and down.

[0028] The design of the positioning slot 81 ensures that the clamping screw 12 is evenly distributed on both the upper and lower sides of the wire clamping plate 8 when pressure is applied. This ensures that the wire clamping plate 8 is simultaneously stressed on both its upper and lower sides, preventing displacement caused by uneven stress. Therefore, the technical solution of this application, by setting the positioning slot 81, allows the clamping screw 12 to simultaneously press against the upper inclined surface 82 and the lower inclined surface 83 during the clamping process, effectively preventing the wire clamping plate 8 from shifting vertically during clamping. This design not only improves the stability of the wire clamping plate 8 and aligns it with the wire groove 90 during clamping, but also ensures that the contact pin 10 can accurately pierce the outer layer of the wire 9 and make contact with its inner copper core, thus guaranteeing the reliability and safety of the yarn feeding device. Compared with the prior art, the technical solution of this application, by optimizing the structural design of the wire clamping plate 8, solves the technical problem of vertical displacement of the wire clamping plate 8 during clamping, improving the working efficiency and reliability of the yarn feeding device.

[0029] Furthermore, this application proposes that the clamping screw 12 corresponds to the center of the wire clamping plate 8, and the wire clamping plate 8 has a positioning slot 81 at least at its center. The design of the positioning slot 81 allows the clamping screw 12 to be precisely aligned with the center of the wire clamping plate 8 for clamping operations. Thus, this application solves the problem of easy misalignment of the wire clamping plate 8 in traditional designs by optimizing its structural design. Specifically, the presence of the positioning slot 81 ensures more stable contact between the clamping screw 12 and the wire clamping plate 8, thereby improving the uniformity and reliability of clamping. This technical solution effectively prevents the wire clamping plate 8 from shifting vertically during clamping by concentrating the force of the clamping screw 12 at the center of the wire clamping plate 8, thereby improving the stability and safety of the equipment. Compared with the prior art, the technical solution of this application not only simplifies the operation process but also significantly improves the clamping effect, avoiding poor contact or short circuit problems caused by misalignment of the wire clamping plate 8.

[0030] In such Figure 4a and 4b In the first embodiment shown, the positioning slot 81 is constructed as a conical slot, the axis of which coincides with the axis of the clamping screw 12, and the upper inclined surface 82 and the lower inclined surface 83 are located on the same conical surface. The end of the clamping screw 12 presses against the conical surface of the positioning slot 81. Specifically, the conical slot design allows the clamping screw 12 to apply pressure evenly during tightening, ensuring that the end of the clamping screw 12 simultaneously contacts both the upper inclined surface 82 and the lower inclined surface 83. This design, through precise geometric matching, ensures stable contact between the clamping screw 12 and the wire clamping plate 8, avoiding misalignment caused by uneven friction and pressure. As a preferred embodiment, the cone angle of the conical slot can be adjusted according to actual application requirements to optimize the clamping effect. Furthermore, the surface of the conical slot can be hardened to improve wear resistance and service life. Therefore, this technical solution effectively solves the problem of the wire clamping plate 8 easily shifting vertically during the tightening process of the clamping screw 12 by precisely designing the conical groove. Compared with the prior art, the technical solution of this application ensures stable contact between the clamping screw 12 and the wire clamping plate 8 through precise matching of geometric shapes, avoiding the shifting problem caused by uneven friction and pressure, thereby improving the clamping effect and stability of the wire clamping plate 8.

[0031] exist Figure 5a and 5bIn another embodiment shown, the positioning slot 81 is constructed as a V-shaped or trapezoidal slot extending laterally on the wire clamping plate 8, with the upper inclined surface 82 and the lower inclined surface 83 located on the upper and lower sides of the V-shaped or trapezoidal slot. Specifically, the design of the V-shaped or trapezoidal slot allows the clamping screw 12 to simultaneously press against the upper inclined surface 82 and the lower inclined surface 83 during the clamping process, thereby effectively preventing the wire clamping plate 8 from shifting vertically during the clamping process. This design ensures that the wire clamping plate 8 remains stable during the clamping process, avoiding poor contact or short circuit problems caused by shifting. Therefore, this application designs the positioning slot 81 as a V-shaped or trapezoidal slot, and provides the upper inclined surface 82 and the lower inclined surface 83 on the upper and lower sides of the slot, so that the clamping screw 12 can simultaneously press against the upper inclined surface 82 and the lower inclined surface 83 during the clamping process, thereby effectively preventing the wire clamping plate 8 from shifting vertically during the clamping process. This design ensures that the wire clamping plate 8 remains stable during the clamping process, avoiding poor contact or short circuits caused by misalignment. Compared with the prior art, the technical solution of this application is simpler in structure and can effectively solve the technical problem that the wire clamping plate 8 is prone to misalignment during the clamping process, thus improving the reliability and safety of the device.

[0032] Furthermore, this application proposes that the V-shaped groove or trapezoidal groove extends to both end faces of the wire clamping plate 8, and the wire clamping plate 8 is integrally drawn. Specifically, the V-shaped groove or trapezoidal groove extends to both end faces of the wire clamping plate 8, enabling the clamping screw 12 to apply pressure evenly during the clamping process, preventing the wire clamping plate 8 from shifting during clamping. The integral drawing of the wire clamping plate 8 not only reduces drilling processes and improves production efficiency, but also ensures the structural strength and consistency of the wire clamping plate 8, further enhancing its stability during clamping. Through this design, the wire clamping plate 8 can stably clamp the wire 9, ensuring that the contact pin 10 accurately pierces the insulation layer of the wire 9 and makes contact with the copper core for conduction, thereby solving the technical problem caused by the shift of the wire clamping plate 8. As a preferred embodiment, the V-shaped groove or trapezoidal groove can be designed as a symmetrical structure to ensure that the clamping screw 12 can apply pressure evenly during clamping. In addition, the integral drawing of the wire clamping plate 8 can be achieved through cold drawing or hot drawing processes to ensure its structural strength and consistency. Therefore, the technical solution of this application, through V-shaped or trapezoidal grooves extending to both end faces of the wire pressure plate 8 and the overall drawing and forming of the wire pressure plate 8, effectively solves the problem of easy displacement of the wire pressure plate 8 during the pressing process. Compared with the prior art, the technical solution of this application not only improves the stability of the wire pressure plate 8, but also simplifies the production process and improves production efficiency. Through this design, the wire pressure plate 8 can stably press the wire 9, ensuring that the contact pin 10 accurately pierces the insulation layer of the wire 9 and makes contact with the copper core for conduction, thereby solving the technical problem caused by the displacement of the wire pressure plate 8.

[0033] like Figure 1 and 2 As shown, the wire clamp 7 has protrusions 91 on the upper and lower sides of the wire groove 90, and upper surface 111 and lower surface 112 are respectively formed on the protrusions 91 on the upper and lower sides. The width of the wire pressure plate 8 is greater than the width of the wire groove 90. When the wire pressure plate 8 presses against the upper surface 111 and lower surface 112 at the same time, the tip of the contact pin 10 pierces the outer layer of the wire 9 and makes contact with the copper core on its inner side to conduct electricity. Specifically, the wire clamp 7 has protrusions 91 on the upper and lower sides of the wire groove 90, and upper surface 111 and lower surface 112 are respectively formed on the protrusions 91. The width of the wire pressure plate 8 is greater than the width of the wire groove 90, so that the wire pressure plate 8 can press against the upper surface 111 and lower surface 112 at the same time during the pressing process, thus allowing precise control of the pressing position of the wire pressure plate 8. By combining this design with the positioning slot 81 structure on the wire clamping plate 8, the wire clamping plate 8 will not shift vertically under the action of the clamping screw 12. Simultaneously, the clamping state ensures that the tip of the contact pin 10 can accurately pierce the insulation layer of the wire 9 and make contact with the copper core for conduction, while preventing the tip of the contact pin 10 from piercing the insulation of the wire 9 and then contacting the wire clamping plate 8. This structure effectively solves the problem of the contact pin 10 failing to accurately contact the copper core due to the offset of the wire clamping plate 8, improving the reliability and stability of the device. As a preferred embodiment, the width of the wire clamping plate 8 can be designed to be slightly larger than the width of the wire groove 90 to ensure that it can completely cover the upper and lower sides of the wire groove 90 during the clamping process. Furthermore, the upper plane 111 and lower plane 112 of the boss 91 can be designed to be parallel and symmetrical to ensure that the wire clamping plate 8 is subjected to uniform force during the clamping process, avoiding tilting or offset. Therefore, the technical solution of this application, by constructing the boss 91 and the upper and lower planes 112, combined with the width design of the wire clamping plate 8, effectively solves the problem of the wire clamping plate 8 shifting during the clamping process. This design not only ensures that the contact pin 10 can accurately pierce the insulation layer of the wire 9 and make contact with the copper core for conduction, but also avoids the tip of the contact pin 10 from contacting the wire pressure plate 8, thereby improving the reliability and stability of the device. Compared with the prior art, the technical solution of this application is more reasonable in structure and simpler to operate, and has significant practicality and innovation.

[0034] like Figure 1 and 2As shown, the mounting clamp 4 is rotatably mounted on the wire clamp 7. The mounting clamp 4 has a clamping opening 41, and a clamping screw 42 is mounted on one side of the clamping opening 41. The rotatable design of the mounting clamp 4 allows for flexible position adjustment when fixing the yarn feeding device, adapting to different installation requirements. The clamping opening 41 and the clamping screw 42 ensure that the clamp can firmly hold the knitting machine's ring, preventing displacement or loosening of the yarn feeding device during operation. This design, through adjustment of the clamping screw 42, ensures moderate clamping force, preventing both excessive tightness (damage to the clamp) and excessive looseness (instability). Specifically, the rotatable design of the mounting clamp 4 can be achieved by using a bearing or sliding pair between the wire clamp 7 and the mounting clamp 4, allowing the mounting clamp 4 to rotate around the wire clamp 7. The clamping opening 41 can be designed with a shape matching the knitting machine's ring, such as a circle or semi-circle, to ensure stable clamping. The clamping screw 42 can be threaded, and the opening and closing degree of the clamping port 41 can be adjusted by rotating the screw, thereby adjusting the clamping force. Therefore, the technical solution of this application effectively solves the technical problems of inflexible rotation or unstable clamping that may occur when installing the chuck 4 to fix the yarn feeding device, through the rotational setting of the chuck 4 and the adjustment of the clamping screw 42. Compared with the prior art, the technical solution of this application has higher flexibility and stability, can better adapt to different installation requirements, and ensure the stability and reliability of the yarn feeding device during operation.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions 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 one or more embodiments or examples.

[0036] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A yarn feeding device, comprising a base (1), an upper cover (2), a yarn storage wheel (3), and a yarn feeding tension control assembly (5) mounted on the base (1), wherein the yarn storage wheel (3) is rotatably mounted on the base; a tension controller (6) is mounted on the upper cover (2), and a mounting clamp (4) for fixing the yarn feeding device to a knitting machine, and a wire clamp (7) for fixing a wire (9); a wire groove (90) for embedding the wire (9) is constructed on the wire clamp (7), a contact pin (10) is constructed at the bottom of the wire groove (90) on the upper cover (2), and a clamping screw (12) is constructed at the upper end of the wire groove (90); the clamping screw (12) presses the wire (9) into the wire groove (90) through a wire clamping plate (8), and the tip of the contact pin (10) pierces the outer layer of the wire (9) and contacts the copper core on its inner side to conduct electricity; characterized in that: The wire clamping plate (8) is provided with a positioning slot (81) in the output direction of the clamping screw (12). The positioning slot (81) includes at least an upper inclined surface (82) and a lower inclined surface (83) on the upper and lower sides of the axis of the clamping screw (12). When the end of the clamping screw (12) presses against the positioning slot (81), the clamping screw (12) presses against the upper inclined surface (82) and the lower inclined surface (83) at the same time, thereby preventing the wire clamping plate (8) from shifting up and down.

2. The yarn feeding device according to claim 1, characterized in that: The clamping screw (12) corresponds to the center of the wire clamping plate (8), and the wire clamping plate (8) is provided with a positioning slot (81) at least at its center.

3. The yarn feeding device according to claim 2, characterized in that: The positioning slot (81) is constructed as a conical slot, the axis of the conical slot coincides with the axis of the clamping screw (12), and the upper inclined surface (82) and the lower inclined surface (83) are located on the same conical surface; the end of the clamping screw (12) presses against the conical surface of the positioning slot (81).

4. A yarn feeding device according to claim 2, characterized in that: The positioning slot (81) is constructed as a V-shaped slot or trapezoidal slot extending in the lateral direction on the wire pressure plate (8), with the upper inclined surface (82) and the lower inclined surface (83) located on the upper and lower sides of the V-shaped slot or trapezoidal slot.

5. A yarn feeding device according to claim 4, characterized in that: The V-shaped groove or trapezoidal groove extends to both ends of the wire pressure plate (8), which is integrally drawn.

6. A yarn feeding device according to any one of claims 1 to 5, characterized in that: The wire clamp (7) has protrusions (91) on the upper and lower sides of the wire groove (90), and upper surface (111) and lower surface (112) are respectively built on the protrusions (91) on the upper and lower sides; the width of the wire pressure plate (8) is greater than the width of the wire groove (90). When the wire pressure plate (8) presses against the upper surface (111) and lower surface (112) at the same time, the tip of the contact pin (10) pierces the outer layer of the wire (9) and makes contact with the copper core on its inner side to conduct electricity.

7. A yarn feeding device according to claim 1, characterized in that: The mounting clamp (4) is rotatably mounted on the wire clamp (7). The mounting clamp (4) has a clamping port (41) and a clamping screw (42) is built on one side of the clamping port (41).

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