Wire feeding mechanism

Abstract

The utility model discloses a wire feeding mechanism, relates to textile equipment field, said wire feeding mechanism includes bottom plate, wire feeding wheel, drive motor, synchronizing wheel set, synchronous belt and steel wire, said wire feeding wheel and said synchronizing wheel set are both rotatingly arranged on said bottom plate, said steel wire is wound around said wire feeding wheel periphery; the driving motor is fixedly mounted on the bottom plate and is jointed with the wire feeding wheel to drive the wire feeding wheel to rotate; the synchronous belt is connected to the synchronous wheel set in a sleeving mode, the inner side surface and the outer side surface of the synchronous belt are both arranged flatly, and the inner side of the synchronous belt makes contact with the periphery of the synchronous wheel set. The outer side of the synchronous belt makes contact with the periphery of the wire feeding wheel so that the steel wire can be tightly pressed on the periphery of the wire feeding wheel. The wire feeding mechanism has the advantages of being simple in structure, low in cost and small in steel wire abrasion.

Description

Technical Field

[0001] The utility model relates to the field of textile equipment, and particularly relates to a wire feeding mechanism. Background Art

[0002] The wire feeding mechanism is a device for starting the bottom during fabric weaving. The wire is passed through the needle loop at the top of the needle teeth on the threading plate by the wire feeding mechanism, so as to complete the starting without using a starting yarn, saving yarn.

[0003] The wire feeding mechanism has the functions of wire feeding and wire retracting to retract the wire after the bottom starting is completed. In the prior art, the wire feeding mechanism usually includes a wire feeding wheel and a synchronous belt. The synchronous belt is sleeved on the wire feeding wheel, and the synchronous belt is driven by a motor to rotate, so as to drive the wire feeding wheel to rotate to wind the wire on the wire feeding wheel to realize wire retracting, or drive the wire feeding wheel to rotate in the reverse direction to send out the wire when the motor rotates in the reverse direction. At the same time, the synchronous belt presses the wire between the outer circumferences of the synchronous belt and the wire feeding wheel. In the above technology, it is necessary to set mutually matching teeth on the synchronous belt and the wire feeding wheel so that the synchronous belt can drive the wire feeding wheel to rotate, avoiding slipping and causing the wire feeding wheel to be unable to feed and retract the wire. This method results in an increase in the cost of the wire feeding wheel and the synchronous belt, complex processing, and the synchronous belt presses the wire through the teeth, and the stress acting on the wire is relatively concentrated, causing greater wear on the wire. Summary of the Invention

[0004] In order to solve the defects of the complex structure, high cost and large wire wear of the wire feeding mechanism in the prior art, the utility model provides a wire feeding mechanism.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions:

[0006] The utility model provides a wire feeding mechanism, which includes a bottom plate, a wire feeding wheel, a driving motor, a synchronous pulley set, a synchronous belt and a wire. The wire feeding wheel and the synchronous pulley set are both rotatably arranged on the bottom plate, and the wire is wound around the outer circumference of the wire feeding wheel;

[0007] The driving motor is fixedly installed on the bottom plate and engaged with the wire feeding wheel to drive the wire feeding wheel to rotate; the synchronous belt is sleeved on the synchronous pulley set, the inner and outer side surfaces of the synchronous belt are both flatly arranged, the inner side of the synchronous belt is in contact with the outer circumference of the synchronous pulley set; the outer side of the synchronous belt is in contact with the outer circumference of the wire feeding wheel to press the wire against the outer circumference of the wire feeding wheel.

[0008] Furthermore, the wire feeding mechanism further includes a transmission component, and the transmission component includes a first gear and a second gear. The first gear is coaxially connected to the rotating shaft of the driving motor, the second gear is coaxially fixed to the wire feeding wheel, and the first gear meshes with the second gear.

[0009] Furthermore, the number of teeth of the first gear is smaller than the number of teeth of the second gear.

[0010] Furthermore, the synchronous wheel group includes at least a first synchronous wheel and a second synchronous wheel, the first synchronous wheel and the second synchronous wheel are located on the same side of the wire feeding wheel, and the synchronous belt passes through the first synchronous wheel, bypasses the wire feeding wheel and contacts the second synchronous belt.

[0011] Further, the first synchronous wheel and the second synchronous wheel are spaced apart to form a wire outlet area facing the wire feeding wheel, and the steel wire can be discharged or recycled from the wire outlet area.

[0012] Furthermore, the synchronous wheel group also includes a relay wheel, at least two of which are provided, and the outer periphery of the relay wheel contacts the inner side of the synchronous belt; the connecting line between two adjacent relay wheels, the connecting line between the first synchronous wheel and the adjacent relay wheel, and the connecting line between the second synchronous wheel and the adjacent relay wheel do not intersect with the wire feeding wheel.

[0013] Furthermore, the synchronous wheel group also includes a tensioning wheel, which is rotatably set on the base plate and contacts the synchronous belt. The tensioning wheel is set between the first synchronous wheel and a relay wheel adjacent to the first synchronous wheel, and the connecting line between the first synchronous wheel and the relay wheel adjacent to the first synchronous wheel does not coincide with the rotating axis of the tensioning wheel.

[0014] Furthermore, the tensioning wheel is adjustably arranged on the bottom plate, and the tensioning wheel is connected to an adjusting mechanism, and the adjusting mechanism can drive the tensioning wheel to move on the bottom plate to adjust the position of the tensioning wheel.

[0015] Furthermore, a long sliding hole is opened on the bottom plate, and the axle of the tensioning wheel passes through the long sliding hole and is connected to a limit block; the adjustment mechanism includes a bottom bracket, an adjusting bolt and an adjusting nut, the bottom bracket is fixed to the side of the bottom plate away from the tensioning wheel, the adjusting nut is fixed to the bottom bracket, the adjusting bolt cooperates with the adjusting nut, and the adjusting bolt passes through the adjusting nut and abuts against the limit block.

[0016] Furthermore, the wire feeding wheel is provided with a circle of wire grooves along the circumferential direction, and the wire grooves are V-shaped grooves, arc-shaped grooves or trapezoidal grooves.

[0017] Furthermore, the wire feeding mechanism also includes a wire feeding tube and a wire feeding block, the wire feeding block is fixed to the base plate, a mounting notch is provided on the wire feeding block, and one end of the wire feeding tube faces the wire feeding wheel and is fixedly engaged in the mounting notch.

[0018] Furthermore, one end of the wire feeding tube facing the wire feeding wheel extends along the tangent direction of the wire feeding wheel.

[0019] Furthermore, there are two wire feeding tubes, and the two wire feeding tubes intersect and extend along two tangent directions of the wire feeding wheel respectively.

[0020] In summary, the utility model has the following beneficial effects:

[0021] 1. In the wire feeding mechanism of the utility model, by rotating the driving motor, the wire feeding wheel arranged on the bottom plate is driven to rotate to retract or send out the steel wire. At the same time, the synchronous wheels arranged on the synchronous wheel group and the wire feeding wheel move under the frictional force of the wire feeding wheel, and the steel wire is pressed against the wire feeding wheel. Thus, in the utility model, the method of driving the synchronous wheel group to rotate by the wire feeding wheel is adopted. Even if the synchronous belt slips, it does not affect the normal wire feeding and wire retracting of the wire feeding wheel. Therefore, the synchronous belt can be set with flat surfaces on both the inner and outer sides, and there is no need to set teeth on the wire feeding wheel, so as to simplify the structure of the wire feeding mechanism, reduce the cost of the wire feeding mechanism. At the same time, the flat synchronous belt makes the stress acting on the steel wire more dispersed, reducing the wear of the steel wire.

[0022] 2. The driving motor is connected to the first gear, and the wire feeding wheel is connected to the second gear. Through the meshing of the first gear and the second gear, the driving motor drives the wire feeding wheel to rotate. Thus, it is not necessary for the driving motor to be coaxially arranged with the wire feeding wheel, reducing the limitations in motor installation. At the same time, the number of teeth of the first gear is less than that of the second gear, so that the driving motor reduces speed and increases torque through the transmission component, increasing the frictional force between the wire feeding wheel and the synchronous belt during wire feeding and wire retracting.

[0023] 3. The first synchronous wheel and the second synchronous wheel are arranged on the same side of the wire feeding wheel, so that the contact area between the synchronous belt and the wire feeding wheel is larger when the synchronous belt bypasses the wire feeding wheel, ensuring that the wire feeding wheel can drive the synchronous belt to move normally; the first synchronous wheel and the second synchronous wheel are spaced apart to form a wire feeding area, facilitating the wire feeding and wire retracting of the steel wire.

[0024] 4. The tensioning wheel is arranged between the first synchronous wheel and a relay wheel adjacent to the first synchronous wheel. The axis of the tensioning wheel does not coincide with the connection line between the relay wheel and the first synchronous wheel, so that the lengths of the synchronous belt passing through the tensioning wheel are different when the tensioning wheel contacts the inner and outer sides of the synchronous belt, thereby achieving different tensioning effects.

[0025] 5. A circle of steel wire grooves is arranged circumferentially on the wire feeding wheel to accommodate the steel wire; among them, the steel grooves are V-shaped grooves, arc-shaped grooves or trapezoidal grooves, so that when the steel wire is accommodated between the steel wire grooves, there are at least two contact lines between the steel wire and the steel wire grooves, increasing the contact area between the steel wire and the steel wire grooves and reducing the wear of the steel wire. Description of the Drawings

[0026] Figure 1It is a three-dimensional structural schematic diagram of a wire feeding mechanism according to an embodiment of the present utility model.

[0027] Figure 2 It is a three-dimensional structural schematic diagram of a driving motor, a transmission component and a wire feeding wheel according to an embodiment of the present utility model.

[0028] Figure 3 It is a structural schematic diagram of a wire feeding wheel perpendicular to the bottom plate direction according to an embodiment of the present utility model.

[0029] Figure 4 It is Figure 3 The enlarged structural schematic diagram at position A in

[0030] Figure 5 It is the structural schematic of a wire feeding mechanism parallel to the bottom plate direction according to an embodiment of the present utility model Figure 1 .

[0031] Figure 6 It is the structural schematic of a wire feeding mechanism parallel to the bottom plate direction according to an embodiment of the present utility model Figure 2 .

[0032] Figure 7 It is a three-dimensional structural schematic diagram of a tensioning wheel and an adjusting mechanism according to an embodiment of the present utility model.

[0033] Figure 8 It is a structural schematic diagram of a tensioning wheel and an adjusting mechanism perpendicular to the bottom plate direction according to an embodiment of the present utility model.

[0034] In the figure:

[0035] 1000, wire feeding mechanism; 100, bottom plate; 110, sliding long hole; 200, wire feeding wheel; 210, steel wire groove; 220, groove; 300, driving motor; 400, synchronous pulley set; 410, first synchronous pulley; 420, second synchronous pulley; 430, wire outlet area; 440, relay pulley; 450, tensioning wheel; 500, synchronous belt; 600, transmission component; 610, first gear; 620, second gear; 700, wire feeding pipe; 800, wire feeding block; 810, installation notch; 900, adjusting mechanism; 910, bottom bracket; 920, adjusting bolt; 930, adjusting nut; 940, limiting block. Detailed implementation manners

[0036] The present utility model will be further described below with reference to the accompanying drawings.

[0037] Embodiment 1

[0038] This embodiment provides a wire feeding mechanism 1000. Refer to Figure 1, the wire feeding mechanism 1000 includes a base plate 100, a wire feeding wheel 200, a driving motor 300, a synchronous pulley set 400, a synchronous belt 500 and a steel wire. The wire feeding wheel 200 and the synchronous pulley set 400 are both rotatably arranged on the base plate 100, and the steel wire is wound around the outer circumference of the wire feeding wheel 200.

[0039] Among them, the housing of the driving motor 300 is fixedly installed on the base plate 100, and the rotating shaft of the motor is engaged with the wire feeding wheel 200 to drive the wire feeding wheel 200 to rotate. The synchronous belt 500 is a closed pulley belt, and the inner and outer surfaces of the synchronous belt 500 are both flat. The synchronous belt 500 is sleeved outside the synchronous pulley set 400, the inner side of the synchronous belt 500 is in contact with the outer circumference of the synchronous pulley set 400, and the outer side of the synchronous belt 500 is in contact with the outer circumference of the wire feeding wheel 200 to press the steel wire against the outer circumference of the wire feeding wheel 200.

[0040] When the wire feeding mechanism 1000 works, the driving motor 300 rotates to drive the wire feeding wheel 200 arranged on the base plate 100 to rotate to retract or send out the steel wire. At the same time, the synchronous pulleys arranged on the synchronous pulley set 400 and the wire feeding wheel 200 move under the frictional force of the wire feeding wheel 200 to press the steel wire against the wire feeding wheel 200. Thus, even if the synchronous belt 500 slips, it does not affect the normal wire feeding and wire retracting of the wire feeding wheel 200. Therefore, the synchronous belt 500 can be set to have flat surfaces on both the inner and outer sides, and there is no need to set teeth on the wire feeding wheel 200, so as to simplify the structure of the wire feeding mechanism 1000, reduce the cost of the wire feeding mechanism 1000, and at the same time, the flat synchronous belt 500 makes the stress acting on the steel wire more dispersed and reduces the wear of the steel wire.

[0041] Refer to Figure 1 and Figure 2 , a transmission component 600 is engaged between the driving motor 300 and the wire feeding wheel 200. The transmission component 600 includes a first gear 610 and a second gear 620. The first gear 610 is coaxially connected to the rotating shaft of the driving motor 300, the second gear 620 is coaxially fixed to the wire feeding wheel 200, and the first gear 610 meshes with the second gear 620. The driving motor 300 drives the wire feeding wheel 200 to rotate through the first gear 610 and the second gear 620, so that the driving motor 300 does not need to be coaxially arranged with the wire feeding wheel 200, reducing the limitations in motor installation.

[0042] Among them, the first gear 610 is a small gear, the second gear 620 is a large gear, and the number of teeth of the first gear 610 is less than that of the second gear 620. Thus, the driving motor 300 decelerates and increases torque through the transmission component 600, increasing the frictional force between the wire feeding wheel 200 and the synchronous belt 500 during wire feeding and wire retracting.

[0043] Refer to Figures 2 to 4, the wire feeding wheel 200 is a disc-shaped component. A groove 220 is formed around the circumferential side of the wire feeding wheel 200 to limit the synchronous belt 500 and ensure that the synchronous belt 500 is in contact with the circumferential side of the wire feeding wheel 200. At the same time, a wire groove 210 is circumferentially arranged at the bottom of the groove 220 of the wire feeding wheel 200. The synchronous belt 500 presses the wire into the wire groove 210, and the wire is accommodated through the wire groove 210.

[0044] Among them, the wire groove 210 can be a V-shaped groove, an arc-shaped groove or a trapezoidal groove, so that the bottom width of the wire groove 210 is smaller than the opening width, so that there are at least two contact lines between the wire accommodated in the wire groove 210 and the wire groove 210, increasing the contact area between the wire and the wire groove 210, thereby being able to reduce the wear when the wire is fed and retracted. In this embodiment, the wire groove 210 is specifically shown in the form of a V-shaped groove.

[0045] Referring to Figure 1 and Figure 5 , in this embodiment, the synchronous pulley set 400 includes a first synchronous pulley 410 and a second synchronous pulley 420. Both the first synchronous pulley 410 and the second synchronous pulley 420 are rotatably arranged on the bottom plate 100. The synchronous belt 500 passes around the first synchronous pulley 410 and then bypasses the wire feeding wheel 200 to contact the second synchronous belt 500. The first synchronous pulley 410 and the second synchronous pulley 420 tighten the synchronous belt 500 bypassing the wire feeding wheel 200 on the wire feeding wheel 200, so that the outer side of the synchronous belt 500 remains in contact with the wire feeding wheel 200 to press the wire on the circumferential side of the wire feeding wheel 200.

[0046] In this embodiment, the first synchronous pulley 410 and the second synchronous pulley 420 are arranged on the same side of the wire feeding wheel 200, so that the contact area between the synchronous belt 500 and the wire feeding wheel 200 is relatively large when the synchronous belt 500 bypasses the wire feeding wheel 200, ensuring that the wire feeding wheel 200 can drive the synchronous belt 500 to move normally. An outgoing wire area 430 facing the wire feeding wheel 200 is formed at an interval between the first synchronous pulley 410 and the second synchronous pulley 420, so that the wire can extend or retract from one side of the wire feeding wheel 200 through the outgoing wire area 430 to avoid interference between the wire and the synchronous belt 500 and facilitate wire feeding and wire retraction.

[0047] The synchronous pulley set 400 further includes a relay pulley 440. The relay pulley 440 is rotatably arranged on the bottom plate 100. There are at least two relay pulleys 440. The outer circumference of the relay pulley 440 contacts the inner side of the synchronous belt 500, that is, the synchronous belt 500 is sleeved outside the first synchronous pulley 410, all relay pulleys 440 and the second synchronous pulley 420 at the same time, and the outer circumference of the relay pulley 440 contacts the inner side of the synchronous pulley.

[0048] Among them, the connection lines between two adjacent relay wheels 440, the connection lines between the first synchronous wheel 410 and the adjacent relay wheels 440, and the connection lines between the second synchronous wheel 420 and the adjacent relay wheels 440 do not intersect with the wire feeding wheel 200. Thus, the synchronous belt 500 between the end of the first synchronous wheel 410 far from the wire feeding wheel 200 and the end of the second synchronous wheel 420 far from the wire feeding wheel 200 does not contact the wire feeding wheel 200, avoiding interference of the synchronous belt 500 on the wire feeding wheel 200.

[0049] In this embodiment, specifically, there are three relay wheels 440. The three relay wheels 440, the first synchronous wheel 410, and the second synchronous wheel 420 are located at the five vertices of a pentagon, and the wire feeding wheel 200 is located inside the pentagon.

[0050] Refer to Figure 5 and Figure 6 The synchronous wheel group 400 further includes a tensioning wheel 450. The tensioning wheel 450 is rotatably arranged on the bottom plate 100 and contacts the synchronous belt 500. The tensioning wheel 450 is arranged between the first synchronous wheel 410 and a relay wheel 440 adjacent to the first synchronous wheel 410. The connection line between the first synchronous wheel 410 and the adjacent relay wheel 440 does not coincide with the rotation axis of the tensioning wheel 450. Thus, when the tensioning wheel 450 contacts the inner side and the outer side of the synchronous belt 500, the lengths of the section of the synchronous belt 500 passing through the tensioning wheel 450 are different, thereby achieving different tensioning effects.

[0051] Refer to Figure 1 The wire feeding mechanism 1000 further includes a wire feeding tube 700 and a wire feeding block 800. The wire feeding block 800 is fixed to the bottom plate 100. An installation notch 810 penetrating through it is provided on the wire feeding block 800. One end of the wire feeding tube 700 extends towards the wire feeding wheel 200 and is fixedly fitted in the installation notch 810, thereby fixing the wire feeding tube 700 to the bottom plate 100. During wire feeding, the steel wire can pass through the wire feeding tube 700 and travel to the required position under the guidance of the wire feeding tube 700.

[0052] In this embodiment, the end of the wire feeding tube 700 facing the wire feeding wheel 200 extends along the tangent direction of the wire feeding wheel 200 and is directly opposite to the wire outlet area 430, so that the steel wire extending along the tangent direction of the wire feeding wheel 200 can smoothly align with and penetrate into the wire feeding tube 700, avoiding bending of the steel wire.

[0053] Embodiment 2

[0054] This embodiment provides a wire feeding mechanism 1000, which is substantially the same as that in Embodiment 1, and the differences are as follows:

[0055] Refer to Figure 7 and Figure 8, in this embodiment, the tension pulley 450 is adjustably disposed on the base plate 100. The tension pulley 450 is connected to an adjusting mechanism 900, and the adjusting mechanism 900 can drive the tension pulley 450 to move on the base plate 100 to adjust the position of the tension pulley 450.

[0056] Specifically, a sliding long hole 110 is formed in the base plate 100, and the length direction of the sliding long hole 110 intersects with the connection line between the first synchronous pulley 410 and the relay pulley 440 adjacent to the first synchronous pulley 410.

[0057] The adjusting mechanism 900 includes a bottom bracket 910, an adjusting bolt 920, and an adjusting nut 930. The bottom bracket 910 is fixed to the side of the base plate 100 facing away from the tension pulley 450 by screws. The adjusting nut 930 is fixed to the bottom bracket 910. The adjusting bolt 920 is in threaded cooperation with the adjusting nut 930, and the axis of the adjusting bolt 920 is parallel to the length direction of the sliding long hole 110. The axle of the tension pulley 450 passes through the sliding long hole and is connected to a limiting block 940. The adjusting bolt 920 passes through the adjusting nut 930 and abuts against the limiting block 940.

[0058] When the adjusting bolt 920 is rotated, the tension pulley 450 can be moved along the length direction of the sliding long hole 110 to adjust the position of the tension pulley 450 on the base plate 100, thereby adjusting the tension amount of the synchronous belt 500.

[0059] The above is only the preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made according to the structure, features, and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A wire feeding mechanism, characterized in that: The wire feeding mechanism (1000) comprises a base plate (100), a wire feeding wheel (200), a driving motor (300), a synchronous wheel group (400), a synchronous belt (500) and a steel wire, wherein the wire feeding wheel (200) and the synchronous wheel group (400) are both rotatably arranged on the base plate (100), and the steel wire is wound around the outer periphery of the wire feeding wheel (200); The driving motor (300) is fixedly mounted on the base plate (100) and is engaged with the wire feeding wheel (200) to drive the wire feeding wheel (200) to rotate; the synchronous belt (500) is sleeved on the synchronous wheel group (400), the inner and outer surfaces of the synchronous belt (500) are both flat, and the inner side of the synchronous belt (500) is in contact with the outer periphery of the synchronous wheel group (400); the outer side of the synchronous belt (500) is in contact with the outer periphery of the wire feeding wheel (200) to press the steel wire against the outer periphery of the wire feeding wheel (200).

2. A wire feeding mechanism according to claim 1, characterized in that: The wire feeding mechanism (1000) further comprises a transmission assembly (600), wherein the transmission assembly (600) comprises a first gear (610) and a second gear (620), wherein the first gear (610) is coaxially connected to the rotating shaft of the driving motor (300), and the second gear (620) is coaxially fixed to the wire feeding wheel (200), and the first gear (610) is meshed with the second gear (620).

3. A wire feeding mechanism according to claim 2, characterized in that: The number of teeth of the first gear (610) is smaller than the number of teeth of the second gear (620).

4. A wire feeding mechanism according to claim 1, characterized in that: The synchronous wheel set (400) comprises at least a first synchronous wheel (410) and a second synchronous wheel (420), wherein the first synchronous wheel (410) and the second synchronous wheel (420) are located on the same side of the wire feeding wheel (200), and the synchronous belt (500) passes through the first synchronous wheel (410) and bypasses the wire feeding wheel (200) to contact the synchronous belt (500).

5. A wire feeding mechanism according to claim 4, characterized in that: The first synchronous wheel (410) and the second synchronous wheel (420) are spaced apart to form a wire outlet area (430) facing the wire feeding wheel (200), and the steel wire can be output or rewound from the wire outlet area (430).

6. A wire feeding mechanism according to claim 5, characterized in that: The synchronous wheel group (400) further comprises a relay wheel (440), at least two of which are provided, and the outer periphery of the relay wheel (440) contacts the inner side of the synchronous belt (500); the connecting line between two adjacent relay wheels (440), the connecting line between the first synchronous wheel (410) and the adjacent relay wheel (440), and the connecting line between the second synchronous wheel (420) and the adjacent relay wheel (440) do not intersect with the wire feeding wheel (200).

7. A wire feeding mechanism according to claim 6, characterized in that: The synchronous wheel set (400) further comprises a tensioning wheel (450), which is rotatably disposed on the base plate (100) and contacts the synchronous belt (500), and the tensioning wheel (450) is disposed between the first synchronous wheel (410) and a relay wheel (440) adjacent to the first synchronous wheel (410), and a connecting line between the first synchronous wheel (410) and the relay wheel (440) adjacent to the first synchronous wheel (410) does not coincide with a rotating axis of the tensioning wheel (450).

8. A wire feeding mechanism according to claim 1, characterized in that: The wire feeding wheel (200) is provided with a circle of wire grooves (210) along the circumferential direction, and the wire grooves (210) are V-shaped grooves, arc-shaped grooves or trapezoidal grooves.

9. A wire feeding mechanism according to claim 1, characterized in that: The wire feeding mechanism (1000) further comprises a wire feeding tube (700) and a wire feeding block (800), wherein the wire feeding block (800) is fixed to the base plate (100), a mounting notch (810) is provided on the wire feeding block (800), and one end of the wire feeding tube (700) faces the wire feeding wheel (200) and is fixedly engaged in the mounting notch (810).

10. A wire feeding mechanism according to claim 9, characterized in that: One end of the wire feeding tube (700) facing the wire feeding wheel (200) extends along a tangential direction of the wire feeding wheel (200).

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