Lower wheel of yarn feeding wheel, yarn feeding wheel and yarn feeding device

Abstract

The utility model relates to a yarn feeding device in the textile field, in particular to a yarn feeding wheel. The utility model provides a lower wheel of a yarn feeding wheel, the lower wheel comprises a lower wheel seat and a plurality of lower wheel ceramic rods, the lower wheel seat is provided with a plurality of first fixed concave parts and a plurality of first abdicating concave parts, and the first fixed concave parts and the first abdicating concave parts are alternately arranged along the circumferential direction of the lower wheel; the lower wheel ceramic rods are fixed in the corresponding first fixing concave parts; a first transition surface is arranged on the outer side of the lower end of the lower wheel porcelain rod; the first abdicating concave part is used for abdicating the corresponding upper wheel ceramic rod; the lower wheel seat is provided with a plurality of blocking parts, and the blocking parts are located below the corresponding first receding concave parts, so that when the yarn is wound on the yarn feeding wheel, the yarn is blocked by the blocking parts and is not prone to entering a gap between the inner side of the upper wheel ceramic rod and the first receding concave parts; the radial distance between the outer edge of the blocking part and the axis of the lower wheel is not larger than the radial distance between the lower edge of the first transition face and the axis of the lower wheel. The utility model further provides a yarn feeding wheel which comprises an upper wheel and the lower wheel.

Description

TECHNICAL FIELD

[0001] The application relates to a yarn feeding device in the field of textiles, in particular to a lower wheel of a yarn feeding wheel, the yarn feeding wheel provided with the lower wheel and the yarn feeding device provided with the yarn feeding wheel. BACKGROUND

[0002] Patent document CN106283372A discloses a yarn feeding wheel (i.e. a yarn storage wheel). In actual production, the inventor of the present application has found that the yarn feeding wheel has a defect. Referring to Figure 1 The whole is a yarn feeding device. When the yarn P2 is wound onto the yarn feeding wheel, the yarn P2 is easily clamped between the lower wheel seat P1 of the yarn feeding wheel and the upper wheel porcelain rod P3 of the yarn feeding wheel. CONTENT OF THE UTILITY MODEL

[0003] The technical problem to be solved by the present application is that when the yarn is wound onto the yarn feeding wheel, the yarn is easily clamped between the lower wheel seat and the upper wheel porcelain rod.

[0004] To solve the above technical problem, the present application provides a lower wheel of a yarn feeding wheel. The lower wheel comprises a lower wheel seat and a plurality of lower wheel porcelain rods. The length direction of the lower wheel porcelain rod is parallel to the axis of the lower wheel. The lower wheel seat has a plurality of first fixing recesses and a plurality of first accommodating recesses. The first fixing recesses and the first accommodating recesses are alternately arranged along the circumferential direction of the lower wheel. The first fixing recesses correspond to the lower wheel porcelain rods one by one. The lower wheel porcelain rods are fixed in the corresponding first fixing recesses. The outer side of the lower end of the lower wheel porcelain rod has a first transition surface. The horizontal distance of the first transition surface to the central axis n gradually shortens from top to bottom. The first transition surface is located outside the first fixing recess. The first accommodating recesses correspond to the upper wheel porcelain rods of the yarn feeding wheel one by one. The first accommodating recesses are used for accommodating the corresponding upper wheel porcelain rods. The lower wheel seat further has a plurality of blocking portions. The blocking portions correspond to the first accommodating recesses one by one. The blocking portions are located below the corresponding first accommodating recesses. When the yarn is wound onto the yarn feeding wheel, the yarn is blocked by the blocking portions and is not easily entered into the gap between the inner side of the upper wheel porcelain rod and the first accommodating recess. The radial distance between the outer edge of the blocking portion and the lower wheel axis is not greater than the radial distance between the lower edge of the first transition surface and the lower wheel axis.

[0005] Compared with patent document CN106283372A, the present application adds the blocking portions to block the yarn from entering the gap between the inner side of the upper wheel porcelain rod and the first accommodating recess. At the same time, the radial distance between the outer edge of the blocking portion and the lower wheel axis is not greater than the radial distance between the lower edge of the first transition surface and the lower wheel axis. Since the yarn is formed by a plurality of thin silk threads, if one or more thin silk threads in the yarn are broken, the broken silk threads can automatically slide down along the first transition surface with the rotation of the yarn feeding wheel and will not come into contact with the blocking portion.

[0006] The application also provides a yarn feeding wheel comprising the upper wheel and the lower wheel. The upper wheel comprises an upper wheel base and a plurality of upper wheel porcelain rods, the length direction of the upper wheel porcelain rods is parallel to the axis of the upper wheel, the upper wheel base is provided with a plurality of second fixing recesses and a plurality of second position recesses, the second fixing recesses and the second position recesses are alternately arranged along the circumference of the upper wheel; the second fixing recesses correspond to the upper wheel porcelain rods one by one, and the upper wheel porcelain rods are fixed in the corresponding second fixing recesses; the second position recesses correspond to the lower wheel porcelain rods one by one, and the second position recesses are used for giving way to the corresponding lower wheel porcelain rods; the upper wheel and the lower wheel are matched, and the upper wheel porcelain rods and the lower wheel porcelain rods are alternately arranged.

[0007] The application also provides a yarn feeding device comprising the yarn feeding wheel. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 A schematic diagram of defects existing in the yarn feeding wheel provided in the patent document CN106283372A;

[0009] Figure 2 A schematic diagram of the cooperation of the upper wheel and the lower wheel in the first embodiment of the application;

[0010] Figure 3 A sectional view of the upper wheel and the lower wheel in the first embodiment of the application;

[0011] Figure 4 A bottom view of the lower wheel in the first embodiment of the application;

[0012] Figure 5 An exploded view of the structure of the lower wheel in the first embodiment of the application;

[0013] Figure 6 An exploded view of the structure of the upper wheel in the first embodiment of the application;

[0014] Figure 7 An exploded view of the structure of the lower wheel in the second embodiment of the application;

[0015] Figure 8 An exploded view of the structure of the upper wheel in the second embodiment of the application;

[0016] REFERENCE SIGNS:

[0017] 1, lower wheel; 2, upper wheel; 11, lower wheel base; 12, lower wheel porcelain rod; 21, upper wheel base; 22, upper wheel porcelain rod; 111, first fixing recess; 112, first position recess; 113, blocking part; 114, first side wall; 121, first transition surface; 122, first groove; 123, first positioning convex part; 211, second fixing recess; 212, second position recess; 213, second side wall; 221, second transition surface; 222, second groove; 223, second positioning convex part. DETAILED DESCRIPTION Embodiment I

[0018] Referring to Figures 2 to 6 In the embodiment, the yarn feeding wheel provided by the application comprises a lower wheel 1 and an upper wheel 2. The lower wheel 1 comprises a lower wheel base 11 and a plurality of lower wheel porcelain rods 12. The length direction L1 of the lower wheel porcelain rods 12 is parallel to the central axis n of the lower wheel 1. The upper wheel 2 comprises an upper wheel base 21 and a plurality of upper wheel porcelain rods 22. The length direction L2 of the upper wheel porcelain rods 22 is parallel to the central axis m of the upper wheel 2. The upper wheel 2 and the lower wheel 1 are matched, and the upper wheel porcelain rods 22 and the lower wheel porcelain rods 12 are arranged alternately.

[0019] Referring to Figure 5 The outer circumferential surface of the lower wheel base 11 is provided with a plurality of first fixing recesses 111 and a plurality of first accommodating recesses 112. The first fixing recesses 111 and the first accommodating recesses 112 are arranged alternately along the circumferential direction of the lower wheel (i.e. the direction around the central axis n of the lower wheel). The first fixing recesses 111 correspond to the lower wheel porcelain rods 12 one by one, and the lower wheel porcelain rods 12 are fixed in the corresponding first fixing recesses 111. The lower end of each lower wheel porcelain rod 12 is provided with a first transition surface 121 outside. The horizontal distance of the first transition surface 121 to the central axis n gradually shortens from top to bottom, and the first transition surface 121 is located outside the first fixing recess 111. In the embodiment, the first transition surface 121 is a beveled surface that is inclined inward from top to bottom. The first accommodating recess 112 corresponds to the upper wheel porcelain rod 22 of the yarn feeding wheel one by one, and the first accommodating recess 112 is used for accommodating the corresponding upper wheel porcelain rod 22. Along the length direction L1 of the lower wheel porcelain rod 12, the lower part of the first transition surface 121 is not blocked by the lower wheel base 11, which can prevent the lower wheel base 11 from blocking the automatic sliding of the broken yarn, i.e. the broken yarn will not contact the bottom of the lower wheel base 11. In the embodiment, the first transition surface 121 is a planar structure, which is a beveled surface that is inclined inward from top to bottom. Those skilled in the art can change the first transition surface 121 from a planar structure to a curved surface structure to obtain a new embodiment, for example, the description of the patent document CN106283372A Figure 5 .

[0020] Referring to Figure 6 The upper wheel base 21 is provided with a plurality of second fixing recesses 211 and a plurality of second accommodating recesses 212. The second fixing recesses 211 and the second accommodating recesses 212 are arranged alternately along the circumferential direction of the upper wheel (i.e. the direction around the central axis m of the upper wheel). The second fixing recesses 211 correspond to the upper wheel porcelain rods 22 one by one, and the upper wheel porcelain rods 22 are fixed in the corresponding second fixing recesses 211. The second accommodating recess 212 corresponds to the lower wheel porcelain rod 12 one by one, and the second accommodating recess 212 is used for accommodating the corresponding lower wheel porcelain rod 12.

[0021] The lower wheel base 11 also has a plurality of blocking parts 113 corresponding to the first let-out recesses 112, and the blocking parts 113 are located below the corresponding first let-out recesses 112, so that when the yarn is wound onto the yarn feeding wheel, the yarn is blocked by the blocking parts 113 and is not easy to enter the gap between the inner side of the upper wheel porcelain rod 22 and the first let-out recess 112. The radial distance D1 between the outer edge of the blocking part 113 and the lower wheel axis is not greater than the radial distance D2 between the lower edge of the first transition surface 121 and the lower wheel axis; see the patent document CN106283372A specification attached figure 9, when feeding the yarn, the central axis m of the upper wheel 2 and the central axis n of the lower wheel 1 are crossed, causing the radial distance between the lower end of the upper wheel porcelain rod 22 and the lower wheel base 11 to float within a small range; in order to prevent the blocking part 113 from blocking and scratching the yarn, the radial distance D1 between the outer edge of the blocking part 113 and the lower wheel axis is not greater than the radial distance D2 between the lower edge of the first transition surface 121 and the lower wheel axis; at the same time, in order to prevent the yarn from entering the gap between the inner side of the upper wheel porcelain rod 22 and the first let-out recess 112, the radial distance D1 between the outer edge of the blocking part 113 and the lower wheel axis is not less than the maximum gap between the inner side of the upper wheel porcelain rod 22 and the first let-out recess 112 when feeding the yarn.

[0022] In this embodiment, the radial distance D1 between the outer edge of the blocking part 113 and the lower wheel axis is equal to the radial distance between the outer edge of the lower wheel base 11 below the first transition surface 121 and the lower wheel axis, so that the lower end surface of the lower wheel base 11 is a simple circular ring; those skilled in the art can increase or decrease the radial distance D1 between the outer edge of the blocking part 113 and the lower wheel axis to obtain a new embodiment.

[0023] In this embodiment, the lower wheel porcelain rod 12 is a cylindrical structure, which has low processing difficulty. The upper end of the lower wheel porcelain rod 12 has a first positioning convex part 123 with a “-” shaped structure protruding upward, which is used to fix the position of the lower wheel porcelain rod 12 relative to the mold of the lower wheel base 11 when the lower wheel base 11 is formed by injection molding; before injection molding, the first positioning convex part 123 is inserted into the corresponding “-” shaped groove in the mold. Those skilled in the art can change the lower wheel porcelain rod 12 to a non-cylindrical structure to obtain a new embodiment, such as embodiment two. Those skilled in the art can design a “-” shaped groove on the upper end of the lower wheel porcelain rod 12 to replace the first positioning convex part 123 to obtain a new embodiment; the “-” shaped groove cooperates with the corresponding “-” shaped convex block on the mold to fix the position of the lower wheel porcelain rod 12 relative to the mold when the lower wheel base 11 is formed by injection molding, for example, the patent document CN106283372A specification attached figure Figure 2 .

[0024] The lower part of the lower ceramic rod 12 has two first grooves 122. When the lower wheel base 11 is formed by injection molding, the first grooves 122 are filled with the injection molding material of the lower wheel base 11, thereby limiting the lower wheel base 11 to the lower ceramic rod 12. For reference, see patent document CN106283372A. Figure 5 In the present embodiment, the first fixed recess 111 is separated from the adjacent first recess 112 by a first side wall 114. The lower part of the lower ceramic rod 12 has a first groove 122 corresponding to each of the two adjacent first side walls 114. The two first grooves 122 are arranged offset along the length direction L1 of the lower ceramic rod 12. When the lower wheel base 11 is formed by injection molding, a first protrusion (not shown in the drawings) corresponding to the first groove 122 is formed on the first side wall 114. The first protrusion is inserted into the first groove 122 to prevent the lower ceramic rod 12 from coming out of the first fixed recess 111.

[0025] In the present embodiment, the upper ceramic rod 22 is cylindrical in structure, which is easy to process. The lower end of the upper ceramic rod 22 has a downwardly protruding “T”-shaped second positioning protrusion 223. The upper wheel base 21 is formed by encapsulated injection molding. The second positioning protrusion 223 is used to fix the position of the upper ceramic rod 22 relative to the mold of the upper wheel base 21 during the injection molding of the upper wheel base 21. Before injection molding, the second positioning protrusion 223 is inserted into the corresponding “T”-shaped groove in the mold. Those skilled in the art can change the upper ceramic rod 22 to a non-cylindrical structure to obtain a new embodiment, such as Embodiment Two. Those skilled in the art can design a “-”-shaped groove at the lower end of the upper ceramic rod 22 to replace the second positioning protrusion 223 to obtain a new embodiment. The “-”-shaped groove cooperates with the corresponding “-”-shaped protrusion on the mold to fix the position of the upper ceramic rod 22 relative to the mold during the injection molding of the upper wheel base 21. However, compared to the structure in which the second positioning protrusion 223 is inserted into the “T”-shaped groove, if the upper ceramic rod 22 has a “-”-shaped groove, the groove part of the upper ceramic rod 22 is prone to breakage during transportation. In addition, because the groove is relatively narrow, the “-”-shaped protrusion of the mold is relatively thin. When the upper ceramic rod 22 stands on the “-”-shaped protrusion of the mold, the “-”-shaped protrusion is prone to bending due to the weight of the upper ceramic rod 22, which in turn causes the upper ceramic rod 22 to produce a slight deviation. During encapsulated injection molding, the relative position between the upper ceramic rod 22 and the upper wheel base 21 deviates, resulting in a high product failure rate.

[0026] The upper part of the upper ceramic rod 22 has two second grooves 222. When the upper wheel base 21 is formed by injection molding, the second grooves 222 are filled with the injection molding material of the upper wheel base 21, thereby limiting the upper wheel base 21 to the upper ceramic rod 22. For reference, see patent document CN106283372A. Figure 6In this embodiment, the second fixing recess 211 and the adjacent second clearance recess 212 are separated by a second sidewall 213. The upper part of the upper wheel ceramic rod 22 is provided with a second groove 222 corresponding to each of the two adjacent second sidewalls 213. The two second grooves 222 are staggered along the length direction of the upper wheel ceramic rod 22. When the upper wheel seat 21 is formed by injection molding, a second protrusion (not shown in the accompanying drawings) corresponding to the second groove 222 is formed on the second sidewall 213. The second protrusion is inserted into the second groove 222 to prevent the upper wheel ceramic rod 22 from coming out of the second fixing recess 211.

[0027] In this embodiment, to prevent the upper ceramic rod 22 from blocking and scratching the yarn, there is a second transition surface 221 on the outer side of the lower end of the upper ceramic rod 22. The horizontal distance from the second transition surface 221 to the central axis m gradually shortens from top to bottom. After the yarn feeding wheel is assembled, the bottommost end of the second transition surface 221 of the upper ceramic rod 22 cannot protrude downward beyond the bottommost end of the first transition surface 121 of the lower ceramic rod 12 (that is, the bottom end of the second transition surface 221 is slightly higher than the bottom end of the first transition surface 121). Of course, those skilled in the art can eliminate the design of the second transition surface 221 to obtain a new embodiment.

[0028] In this embodiment, the second transition surface 221 is a sloping surface that slopes inward from top to bottom. Those skilled in the art can change the second transition surface 221 from a planar structure to an arc surface structure to obtain a new embodiment. Example 2

[0029] The difference between this embodiment and Embodiment 1 is the structure of the lower and upper ceramic rods; at the same time, since the structures of the lower ceramic rod 12' and the upper ceramic rod 22' in this embodiment are different from those in Embodiment 1, the structures of the first fixing recess 111' and the second fixing recess 211' in this embodiment are also different from those in Embodiment 1.

[0030] In this embodiment, see Figure 7, the lower wheel ceramic stick 12' is a non-cylindrical structure, the side f1 opposite to the first side wall 114' of the lower wheel ceramic stick 12' is a plane structure, the two side f1 of the lower wheel ceramic stick 12' are respectively towards the first side wall 114' on both sides of the lower wheel ceramic stick 12', and the two side f1 are parallel, so that when the lower wheel base 11' is formed by injection molding, the upper part of the lower wheel ceramic stick 12' can be clamped by a clamp to fix the position of the lower wheel ceramic stick 12' relative to the mold; the outer side of the lower wheel ceramic stick 12' is a curved surface structure, which prevents scratching the yarn.The side opposite to the first side wall 114' of the lower wheel ceramic stick 12' has a first glue wrapping matching protrusion 31, and the two first glue wrapping matching protrusions 31 are located at the lower part of the lower wheel ceramic stick 12' and face opposite directions; the lower end of the lower wheel ceramic stick 12' has a second glue wrapping matching protrusion 32 protruding downward, and when the lower wheel base 11' is formed by injection molding, the injection molding material of the lower wheel base 11' forms wrapping on the second glue wrapping matching protrusion 32 and the two first glue wrapping matching protrusions 31 respectively, so that the lower wheel base 11' limits the lower wheel ceramic stick 12', preventing the lower wheel ceramic stick 12' from coming out of the first fixed recess 111'.Those skilled in the art can design the structure for preventing the lower wheel ceramic stick 12' from coming out of the first fixed recess 111' as the structure of the patent document CN106283372A specification attached drawings Figure 4 , to obtain a new embodiment.

[0031] In the embodiment, referring to Figure 8 , the upper wheel ceramic stick 22' is a non-cylindrical structure, the side f2 opposite to the second side wall 213' of the upper wheel ceramic stick 22' is a plane structure, the two side f2 of the upper wheel ceramic stick 22' are respectively towards the second side wall 213' on both sides of the upper wheel ceramic stick 22', and the two side f2 are parallel, so that when the upper wheel base 21' is formed by injection molding, the lower part of the upper wheel ceramic stick 22' can be clamped by a clamp to fix the position of the upper wheel ceramic stick 22' relative to the mold; the outer side of the upper wheel ceramic stick 22' is a curved surface structure, which prevents scratching the yarn.The inner side upper part of the upper wheel ceramic stick 22' has two glue wrapping matching recesses 33, compared with the second groove 222 of the first embodiment, the glue wrapping matching recess 33 does not have the function of preventing the upper wheel ceramic stick 22' from coming out of the second fixed recess 211' from inside to outside; the upper end of the upper wheel ceramic stick 22' is wrapped by the upper wheel base 21', so that the function of preventing the upper wheel ceramic stick 22' from coming out of the second fixed recess 211' from inside to outside is realized. Those skilled in the art can design the structure for preventing the upper wheel ceramic stick 22' from coming out of the second fixed recess 211' as the structure of the patent document CN106283372A specification attached drawings Figure 4 , to obtain a new embodiment.

[0032] The utility model discloses still disclose a yarn feeding device (also called yarn feeder), which adopts the yarn feeding wheel disclosed in each of the preceding embodiments.

[0033] The above embodiments and drawings are not limited to the product shape and style of the present application, and any appropriate changes and modifications made by those skilled in the art should be considered as not departing from the scope of the present application.

Claims

1. A lower wheel of a yarn feeding wheel, the lower wheel comprising a lower wheel base and a plurality of lower wheel ceramic rods, the length direction of the lower wheel ceramic rods being parallel to the axis of the lower wheel, the lower wheel base having a plurality of first fixing recesses and a plurality of first accommodating recesses, the first fixing recesses and the first accommodating recesses being arranged alternately along the circumferential direction of the lower wheel; each of the first fixing recesses corresponds to a lower wheel ceramic rod, and the lower wheel ceramic rod is fixed in the corresponding first fixing recess; the outer side of the lower end of the lower wheel ceramic rod has a first transition surface, the horizontal distance of the first transition surface to the central axis n gradually shortens from top to bottom, and the first transition surface is located outside the first fixing recess; each of the first accommodating recesses corresponds to an upper wheel ceramic rod of an upper wheel of the yarn feeding wheel, and the first accommodating recess is used for accommodating the corresponding upper wheel ceramic rod; characterized in that: the lower wheel base further has a plurality of blocking portions, each of the blocking portions corresponds to a first accommodating recess, and the blocking portion is located below the corresponding first accommodating recess, so that when the yarn is wound onto the yarn feeding wheel, the yarn is blocked by the blocking portion and is not easy to enter the gap between the inner side of the upper wheel ceramic rod and the first accommodating recess; the radial distance between the outer edge of the blocking portion and the lower wheel axis is not greater than the radial distance between the lower edge of the first transition surface and the lower wheel axis. The lower wheel ceramic rod is in a cylindrical structure, and the upper end of the lower wheel ceramic rod has a first positioning protrusion in a "-” shape protruding upward; when the lower wheel base is formed by a rubber coating injection molding process, the first positioning protrusion is used for plug-in cooperation with the corresponding mold to position the lower wheel ceramic rod.

2. The lower wheel of claim 1, wherein: The lower wheel ceramic rod is in a non-cylindrical structure, the outer side of the lower wheel ceramic rod is in an arc surface structure, the first fixing recess and the adjacent first accommodating recess are separated by a first side wall, and the side of the lower wheel ceramic rod opposite to the first side wall is in a plane structure; when the lower wheel base is formed by a rubber coating injection molding process, the upper part of the lower wheel ceramic rod is clamped by a clamp to realize positioning of the lower wheel ceramic rod.

3. The lower wheel of claim 1, wherein: The lower part of the side of the lower wheel ceramic rod opposite to the first side wall has a first rubber coating cooperation protrusion, and the lower end of the lower wheel ceramic rod has a second rubber coating cooperation protrusion protruding downward, and based on the wrapping of the first rubber coating cooperation protrusion and the second rubber coating cooperation protrusion by the injection material of the lower wheel base, the lower wheel base realizes the limiting of the lower wheel ceramic rod.

4. The lower wheel of claim 3, wherein: The yarn feeding wheel comprises an upper wheel and a lower wheel as claimed in any one of claims 1 to 4, the upper wheel comprising an upper wheel base and a plurality of upper wheel ceramic rods, the length direction of the upper wheel ceramic rods being parallel to the axis of the upper wheel, the upper wheel base having a plurality of second fixing recesses and a plurality of second accommodating recesses, the second fixing recesses and the second accommodating recesses being arranged alternately along the circumferential direction of the upper wheel; each of the second fixing recesses corresponds to an upper wheel ceramic rod, and the upper wheel ceramic rod is fixed in the corresponding second fixing recess; each of the second accommodating recesses corresponds to a lower wheel ceramic rod, and the second accommodating recess is used for accommodating the corresponding lower wheel ceramic rod; the upper wheel and the lower wheel are matched, and the upper wheel ceramic rods and the lower wheel ceramic rods are arranged alternately.

5. A yarn feed wheel characterized by: The outer side of the lower end of the upper wheel ceramic rod has a second transition surface, and the horizontal distance of the second transition surface to the central axis M gradually shortens from top to bottom.

6. The yarn feed wheel of claim 5, wherein: ​ 7. A yarn feed wheel as claimed in claim 5 or 6, characterised in that: The upper wheel ceramic stick is in a cylindrical structure, and the lower end of the upper wheel ceramic stick has a downwardly protruding "T"-shaped second positioning protrusion; when the upper wheel base is formed through a rubber-coated injection molding process, the second positioning protrusion is used for plug-in cooperation with a corresponding mold to position the upper wheel ceramic stick.

8. A yarn feed wheel as claimed in claim 5 or 6, characterised in that: The upper wheel ceramic stick is in a non-cylindrical structure, and the outer side of the upper wheel ceramic stick is in an arc surface structure; the second fixing recess and the adjacent second recess are separated by a second side wall, and the side of the upper wheel ceramic stick opposite to the second side wall is in a plane structure; when the upper wheel base is formed through a rubber-coated injection molding process, the lower part of the upper wheel ceramic stick is clamped by a clamp to realize positioning of the upper wheel ceramic stick.

9. The yarn feed wheel of claim 8, wherein: The inner side of the upper wheel ceramic stick has a rubber-coated cooperation recess on the upper part, and based on filling of the rubber-coated cooperation recess by the injection molding material of the upper wheel base and wrapping of the upper end of the upper wheel ceramic stick, the upper wheel base realizes limiting of the upper wheel ceramic stick.

10. A yarn feeding device characterized by: It comprises the yarn feeding wheel of any one of claims 5-9.

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