CN215856622U - Knitting yarn conveying device and yarn knot filter thereof - Google Patents

Abstract

The utility model relates to the field of textile equipment, in particular to a knitting yarn conveying device and a yarn knot filter thereof. A yarn knot filter comprises a base and a yarn cleaning component which is arranged and fixed on the base; the yarn clearing component comprises two yarn clearing sheets which are independent mutually; at least part of the two yarn cleaning sheets extends out of the base, a yarn cleaning gap is formed between the extending parts, or the two yarn cleaning sheets are embedded in the base, a yarn cleaning gap for a yarn to pass through is formed between the two yarn cleaning sheets, an avoiding opening corresponding to the yarn cleaning gap is formed in the base, the caliber of the avoiding opening is larger than that of the yarn cleaning gap, and yarn cleaning ends of the two yarn cleaning sheets are located in the avoiding opening. The yarn knot filter can meet the requirements on overall strength and high hardness and high wear resistance of yarn clearing positions; and the edge of the inner wall of the yarn cleaning gap is conveniently polished.

Description

Knitting yarn conveying device and yarn knot filter thereof

Technical Field

The utility model relates to the field of textile equipment, in particular to a knitting yarn conveying device and a yarn knot filter thereof.

Background

As shown in fig. 1, the knitting yarn feeding device includes a housing 2, a driving pulley 3 disposed above the housing 2, a clutch 4, and a yarn feeding wheel 5 disposed below the housing 2, a main shaft vertically penetrates the housing 2, an upper portion thereof is connected to the driving pulley 3 and the clutch 4, and a lower portion thereof is connected to the yarn feeding wheel 5. When the yarn feeding device works, a transmission belt strip on a knitting machine drives a transmission belt wheel 3 at the upper part of the yarn feeding device to rotate, the transmission belt wheel rotates to a yarn feeding wheel 5 through a clutch 4 and a main shaft, so that the yarn feeding wheel 5 rotates, the yarn on a yarn cylinder is pulled out, the yarn is wound on the circumferential surface of the yarn feeding wheel 5 through a lead frame 6, a yarn clamping device 7, a yarn knot filter 1, the lower part of a front detection rod 81 and a yarn feeding porcelain ring 91, and meanwhile, the yarn on the yarn feeding wheel 5 is supplied to a knitting needle on the knitting machine to work through the lower part of a yarn discharging porcelain ring 92 and a rear detection rod 82.

In the existing knitting yarn conveying device, a yarn knot filter is manufactured by stamping a steel plate and carrying out heat treatment, a groove is small and is not polished in place, the inner surface of the groove is rough, and when the knitting yarn conveying device works, due to high-frequency movement of yarns, the yarns rub against the groove of the yarn knot filter; in addition, the yarn is positioned at the left side or the right side of the yarn inlet ceramic ring hole due to different rotating directions of the knitting machine, the yarn can be rubbed with the groove of the yarn knot filter, so that the yarn is easy to be creased, and after a period of use, the long-term friction part between the yarn and the groove of the yarn knot filter is easy to generate groove due to the fact that the surface of steel subjected to heat treatment can only reach certain hardness, the yarn is creased or hooked up, and the normal work of the knitting machine is seriously influenced. The other type of the yarn knot filter is integrally sintered by ceramic materials, although the yarn knot filter is high in hardness and good in wear resistance, the yarn knot filter is complex in structure, and the groove position in contact with yarns is difficult to polish, so that the phenomenon that the grooves are not polished in place and the yarns are scratched due to rough inner surfaces of the grooves exists, and the yarn knot filter processed by the ceramic materials has the defects of high cost and high fragile rejection rate.

Disclosure of Invention

In order to solve the above problems, a first object of the present invention is to provide a filter for neps that can satisfy the overall strength requirement and the requirement of high hardness and high abrasion resistance at the yarn removing portion; and the edge of the inner wall of the yarn cleaning gap is conveniently polished.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a knot filter characterized by: comprises a base and a yarn cleaning component which is arranged and fixed on the base; the yarn clearing component comprises two yarn clearing sheets which are independent mutually;

at least part of the two yarn clearing sheets extends out of the base, and a yarn clearing gap is formed between the extending parts;

or two yarn clearing sheets are embedded in the base, a yarn clearing gap for the yarn to pass through is constructed between the two yarn clearing sheets, an avoiding port corresponding to the yarn clearing gap is arranged on the base, the caliber of the avoiding port is larger than that of the yarn clearing gap, and yarn clearing ends of the two yarn clearing sheets are positioned in the avoiding port.

The utility model adopts the technical scheme, and the technical scheme relates to a yarn knot filter which comprises a base and a yarn cleaning assembly, wherein a yarn cleaning gap is formed between two yarn cleaning sheets in the yarn cleaning assembly; in this scheme, yarn cleaning piece and base are not integrative to be built and are formed, can select to use different materials to prepare and form, satisfy the high wear resistant demand of bulk strength demand and yarn cleaning position high rigidity simultaneously. And two yarn clearing sheets are mutually independent, and the yarn clearing sheets can be independently polished, so that the inner wall of a yarn clearing gap formed between the two yarn clearing sheets is smooth, and the yarn cannot be scraped when passing through.

Based on the scheme, compared with the traditional integrated steel or ceramic yarn knot filter, the yarn knot filter can meet the requirements on overall strength and high hardness and high wear resistance of yarn clearing positions; and the polishing treatment of the inner wall of the yarn clearing gap is convenient.

In a further preferred embodiment, the distance between the outer ends of the two yarn clearing sheets is gradually increased from inside to outside, so that the outer end of the yarn clearing gap is in a cone shape. In the technical scheme, the outer end part of the yarn clearing gap is set to be in a cone mouth shape, so that the yarn is conveniently guided into the yarn clearing gap during debugging.

Preferably, a central shaft or a central shaft hole is arranged at the center of the base, and a plurality of yarn cleaning assemblies and a plurality of positioning holes or positioning columns are regularly arranged on the base along the circumferential direction of the center of the base; the yarn clearing gaps formed on the yarn clearing components have unequal calibers. In the technical scheme, a plurality of yarn cleaning assemblies are regularly arranged on the base in the circumferential direction, the caliber of each yarn cleaning gap is unequal, and therefore when the yarn cleaning device is used, a proper yarn cleaning gap can be selected according to the thickness of processed yarns. When the yarn clearing gaps with different calibers are adjusted and selected, the yarn knot filter can be rotated only by taking the central shaft or the central shaft hole as the axis, and when the yarn clearing gaps are selected for processing, the yarn knot filter can be circumferentially positioned through the positioning holes or the positioning columns; the specific adjustment and positioning process needs to be described in conjunction with the knitting yarn feeding device, as described in detail below.

Preferably, the base comprises a bottom plate and a top cover, and the bottom plate is fixedly connected with the top cover and fixes the yarn cleaning assembly in the top cover.

In a specific embodiment, the upper end surface of the bottom plate and the lower end surface of the top cover are respectively provided with a corresponding connecting column and a corresponding connecting groove, and the yarn cleaning sheet is provided with a connecting through hole; the end part of the connecting column penetrates through the connecting through hole and is clamped into the connecting groove. In the scheme, the arrangement modes of the connecting column and the connecting groove on the bottom plate and the top cover can be interchanged. The connection column is installed on the upper end surface of the bottom plate, and the connection groove is installed on the lower end surface of the top cover. During installation, the connecting through holes in the yarn cleaning sheets are aligned and arranged in the connecting columns, the yarn cleaning sheets are positioned relative to the bottom plate, then the top cover is covered above, and the end parts of the connecting columns are clamped in the connecting grooves to realize butt joint. This simplifies the process steps for assembling the leno filter without the need for alignment. The key point is that the yarn cleaning sheets and the base are limited by connecting columns, and the setting positions of the connecting columns determine the caliber of a yarn cleaning gap between the two yarn cleaning sheets; therefore, the position of the connecting column is designed only when the yarn cleaning clearance caliber is manufactured, and measurement and calibration are not needed when the yarn cleaning clearance caliber is assembled.

Preferably, the upper end face of the bottom plate and/or the lower end face of the top cover are/is provided with grooves, the combined depth of the grooves is equal to the thickness of the yarn cleaning sheets, and the connecting columns and/or the connecting grooves are/is arranged in the grooves. In the technical scheme, the groove is arranged to facilitate positioning of the yarn cleaning sheet during assembly. Particularly, when the yarn cleaning piece is assembled and connected with the bottom plate, the yarn cleaning piece can be positioned by being placed in a way of aligning to the groove, and the yarn cleaning piece is very convenient.

Preferably, the bottom plate and the top cover are regularly provided with a plurality of petal bodies along the circumferential direction, and an avoidance port is formed between every two adjacent petal bodies; the groove is arranged on the upper end face of the bottom plate and/or the lower end face of the top cover along the edge of the avoiding opening. In this technical scheme, bottom plate and top cap all adopt the petal shape, including a plurality of lamella bodies, and be formed with between two adjacent lamella bodies and avoid the mouth. So bottom plate and top cap are connected and establish the yarn cleaning piece clamp in the centre, and the radial extension parcel of lamella body lives the yarn cleaning piece to the protection yarn cleaning piece increases its intensity. The avoidance port formed between the petal bodies is used for exposing the yarn clearing gap.

Preferably, the bottom plate and the top cover are respectively a plastic bottom plate and a plastic top cover, and the yarn cleaning sheet is a ceramic sheet; the bottom plate and the top cover are fixed by ultrasonic welding, and a plurality of welding strips are arranged on the upper end surface of the bottom plate and/or the lower end surface of the top cover. In the technical scheme, the plastic bottom plate and the plastic top cover are adopted, the connecting column and the connecting groove are formed by one-time injection molding, and the connecting strength and the smoothness are ensured. The plastic bottom plate and the plastic top cover are fixed by welding, so that the integral strength of the assembled yarn filter can be ensured; particularly, the welding strips are melted during ultrasonic welding so that the bottom plate and the top cover are welded together. Although other structures for securing the base and top cover are possible. But the product size is smaller, so that the ultrasonic welding is convenient and reasonable.

In addition, the yarn cleaning sheet is selected as a ceramic sheet, and has the characteristics of high hardness and good wear resistance; the defects that the yarn cleaning sheet is fragile and easy to damage are overcome by welding and cladding the plastic bottom plate and the plastic top cover.

The second purpose of the utility model is to provide a knitting yarn conveying device, which comprises a shell, a transmission belt wheel, a clutch and a yarn conveying wheel, wherein the transmission belt wheel and the clutch are arranged above the shell; the shell on the front side of the yarn conveying wheel is provided with a lead frame, a yarn clamping device, a yarn knot filter, a front detection rod and a yarn feeding porcelain ring, and the shell on the rear side of the yarn conveying wheel is provided with a yarn discharging porcelain ring and a rear detection rod; the yarn knot filter adopts the yarn knot filter.

This scheme adopts above-mentioned yarn knot filter, and the clear yarn clearance inner wall that can guarantee the yarn knot filter is smooth, makes things convenient for the yarn to pass through smoothly and the phenomenon that the yarn scraped hair is difficult for appearing.

In a further preferred scheme, a central shaft or a central shaft hole of the yarn knot filter is penetrated or connected to a lead frame through a connecting shaft, and a positioning column or a positioning hole is arranged on the lead frame; the yarn knot filter can axially move along the axial lead of the lead frame relative to the lead frame, and an elastic component is arranged to axially compress the yarn knot filter; under the elasticity of the elastic component, the yarn knot filter and the lead frame are clamped into the positioning hole through the positioning column for positioning; when the yarn knot filter and the lead frame are clamped into the positioning hole through the positioning column for positioning, the yarn knot filter and the lead frame are locked in the circumferential direction; when the positioning column is pulled out of the positioning hole, the yarn knot filter can rotate along the axial lead in the circumferential direction relative to the lead frame.

The following description will be given by taking an example in which the elastic member is a compression spring, the yarn knot filter is provided with a central shaft hole and a positioning hole, and the lead frame is provided with a positioning column. When the yarn knot filter is installed, the compression spring is firstly sleeved on the screw, then the screw penetrates through a central shaft hole of the yarn knot filter, then penetrates through the lead frame and then is fixed by the nut. Under the action of the pressure spring, the positioning hole of the yarn knot filter is sleeved on the positioning column of the lead frame (the yarn knot filter does not rotate). Five yarn clearing gaps with different calibers are formed in the yarn knot filter, a customer can select and use the yarn knot filter according to different yarns, the yarn knot filter is pressed downwards during adjustment and selection, a positioning hole of the yarn knot filter is separated from a positioning column of the lead frame, and the pressure spring is compressed in the process; and then the yarn knot filter is rotated to a required position and released, and the yarn knot filter and the lead frame are positioned again by the pressure spring.

Drawings

Fig. 1 shows a structure of a knitting yarn feeding device.

Figure 2 shows a view of a yarn knot filter installation.

Figure 3 shows a perspective view of the yarn knot filter of example 1.

Figure 4 shows an exploded view of the yarn knot filter of example 1.

Figure 5 shows a cross-sectional view of the yarn knot filter of example 1.

Figure 6 is a drawing of a top cover of a gauze filter of example 1.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1:

as shown in fig. 3 to 6, the present embodiment relates to a yarn knot filter, which includes a base 11 and a yarn cleaning assembly mounted and fixed on the base 11. The yarn clearing component comprises two yarn clearing sheets 12 which are independent from each other, a yarn clearing gap 121 for a yarn to pass through is formed between the two yarn clearing sheets 12, the yarn clearing gap 121 is generally between 0.2 MM and 3MM, and the following two schemes can be adopted:

in the first scheme, two yarn clearing sheets 12 at least partially extend out of the base 11, and a yarn clearing gap 121 is formed between the extending parts. The yarn cleaning sheet 12 in this solution is only connected to the base at its root, and partially extends outside the base, so that it is relatively easy to install.

And in the second scheme, two yarn cleaning sheets 12 are embedded in the base 11, a yarn cleaning gap 121 for the yarn to pass through is constructed between the two yarn cleaning sheets 12, an avoiding port 114 corresponding to the yarn cleaning gap 121 is arranged on the base 11, the caliber of the avoiding port 114 is larger than that of the yarn cleaning gap 121, and the yarn cleaning ends of the two yarn cleaning sheets 12 are positioned in the avoiding port 114. According to the technical scheme, the two yarn clearing sheets 12 are arranged inside the base 11, and the base 11 plays a supporting and protecting role for the yarn clearing sheets 12. The diameter of the avoiding opening 114 is about 1MM larger than that of the yarn cleaning gap 121, so that the yarn contacts the inner side wall of the yarn cleaning tile 12 and does not contact the base 11.

The yarn knot filter 1 comprises a base 11 and a yarn clearing component, wherein a yarn clearing gap 121 is formed between two yarn clearing sheets 12 in the yarn clearing component. In the scheme, the yarn cleaning sheet 12 and the base 11 are not integrally constructed and can be prepared from different materials, and the requirements on overall strength and high hardness and high wear resistance of yarn cleaning parts are met. And two yarn cleaning sheets 12 are independent from each other, and the yarn cleaning sheets 12 can be polished independently, so that the inner wall of a yarn cleaning gap 121 formed between the two yarn cleaning sheets 12 is smooth, and yarn cannot be scraped when passing through.

Based on above-mentioned scheme, this yarn knot filter 1 compares in the steel of traditional integral type or ceramic yarn knot filter 1, and it can satisfy the high wear-resisting demand of high rigidity of bulk strength demand and clear yarn position. And the polishing treatment of the inner wall of the yarn cleaning gap 121 is facilitated.

In a further preferred embodiment, the distance between the outer ends of the two yarn clearing sheets 12 is gradually increased from inside to outside, so that the outer end of the yarn clearing gap 121 is in a cone shape. The outer end of the clearing gap 121 is here provided with a conical shape, which facilitates the introduction of the yarn into the clearing gap 121 during setting up.

As shown in fig. 3, a central shaft or central shaft hole 111 is provided at the center of the base 11, and a plurality of yarn cleaning assemblies and a plurality of positioning holes 112 or positioning pillars are regularly arranged on the base 11 along the circumference of the center thereof. The yarn-clearing gaps 121 formed on the plurality of yarn-clearing components have unequal calibers. In the technical scheme, a plurality of yarn cleaning assemblies are regularly arranged on the base 11 in the circumferential direction, the caliber of each yarn cleaning gap 121 is unequal, and therefore when the yarn cleaning device is used, a proper yarn cleaning gap 121 can be selected according to the thickness of processed yarns. When the yarn cleaning clearance 121 with different calibers is adjusted and selected, the knot filter 1 can be rotated only by taking the central shaft or the central shaft hole 111 as the axis, and when the yarn cleaning clearance 121 is selected for processing, the knot filter 1 can be circumferentially positioned through the positioning hole 112 or the positioning column. The specific adjustment and positioning process needs to be described in conjunction with the knitting yarn feeding device, which is described in detail in example 2.

As shown in fig. 4 and 5, the base 11 includes a bottom plate 11a and a top cover 11b, and the bottom plate 11a is connected with the top cover 11b and fixes the yarn cleaning assembly therein. In a specific scheme, the bottom plate 11a and the top cover 11b are regularly arranged with a plurality of flap bodies 113 along the circumferential direction, and an avoidance port 114 is formed between two adjacent flap bodies 113. In this technical scheme, bottom plate 11a and top cap 11b all adopt the petal shape, including a plurality of lamella bodies 113, and be formed with between two adjacent lamella bodies 113 and dodge mouth 114. Here there may be 4-7 sheets, a 5-sheet construction is common, as shown in the figure. In this way, the bottom plate 11a and the top cover 11b are connected and sandwich the yarn clearing sheet 12, and the flap body 113 extends radially to wrap the yarn clearing sheet 12, so as to protect the yarn clearing sheet 12 and increase the strength of the yarn clearing sheet. The escape opening 114 formed between the flaps 113 is preferably used to expose the yarn removing gap 121.

The bottom plate 11a and the top cover 11b are respectively a plastic bottom plate 11a and a plastic top cover 11b, and the yarn cleaning sheet 12 is a ceramic sheet. The bottom plate 11a and the top cover 11b are fixed by ultrasonic welding, a plurality of welding strips 115 are arranged on the upper end face of the bottom plate 11a and/or the lower end face of the top cover 11b, the welding strips 115 are triangular, and the height range is generally 0.3 mm-0.9 mm. In the technical scheme, the plastic bottom plate 11a and the plastic top cover 11b are adopted, the connecting column and the connecting groove are formed in one-time injection molding mode, and the connecting strength and the smoothness are guaranteed. The plastic bottom plate 11a and the plastic top cover 11b are fixed by welding, so that the integral strength of the assembled yarn filter 1 can be ensured; specifically, the welding bar 115 is melted during the ultrasonic welding so that the bottom plate 11a and the top cover 11b are welded together. Although other structures may be used to secure the base plate 11a and the top cover 11 b. But the product size is smaller, so that the ultrasonic welding is convenient and reasonable.

In addition, the yarn cleaning sheet 12 is a ceramic sheet and has the characteristics of high hardness and good wear resistance; the fragile and vulnerable defects of the yarn cleaning sheet 12 are overcome by welding and cladding the plastic bottom plate 11a and the plastic top cover 11 b.

As shown in fig. 4, a groove 116 is formed on the upper end surface of the bottom plate 11a and/or the lower end surface of the top cover 11b, the combined depth of the grooves 116 is equal to the thickness of the yarn cleaning sheet 12, and the groove 116 is arranged on the upper end surface of the bottom plate 11a and/or the lower end surface of the top cover 11b along the edge of the escape opening 114. The groove 116 is provided here to facilitate positioning of the clearer sheet 12 during assembly; particularly, when the yarn cleaning sheet 12 is assembled and connected with the bottom plate 11a, the yarn cleaning sheet 12 can be positioned by being placed in alignment with the position of the groove 116, which is very convenient. As further shown in the figures, a connecting column 117 and a connecting groove 118 are respectively disposed on the upper end surface of the bottom plate 11a and the lower end surface of the top cover 11b, the connecting column 117 and/or the connecting groove 118 are disposed in the groove 116, and a connecting through hole 122 is disposed on the yarn cleaning sheet 12. The end of the connecting stud 117 is snapped into the connecting slot 118 through the connecting through-hole 122. In this embodiment, the connecting posts 117 and connecting slots 118 may be arranged on the bottom plate 11a and the top cover 11b interchangeably. The illustration is made by taking the example shown in the drawings, specifically, the connecting column 117 is installed on the upper end surface of the bottom plate 11a, and the connecting groove 118 is installed on the lower end surface of the top cover 11 b. During installation, the connecting through hole 122 on the yarn cleaning sheet 12 is aligned and installed into the connecting column 117, the yarn cleaning sheet 12 is relatively positioned relative to the bottom plate 11a, then the top cover 11b is covered above, and the end part of the connecting column 117 is clamped into the connecting groove 118 to realize butt joint. This simplifies the process steps for assembling the leno filter 1 without the need for alignment. The key point is that the yarn cleaning sheets 12 and the base 11 are limited by connecting columns 117 in the scheme, and the arrangement position of the connecting columns 117 determines the caliber of a yarn cleaning gap 121 between the two yarn cleaning sheets 12. This is done by simply designing the location of the connecting stub 117 at the time of manufacture, i.e. setting the size of the clearing gap 121, without the need for measurement calibration at the time of assembly.

Example 2:

as shown in fig. 1, the present embodiment provides a knitting yarn feeding device, which includes a housing 2, a driving pulley 3 and a clutch 4 disposed above the housing 2, and a yarn feeding wheel 5 disposed below the housing 2, wherein a main shaft vertically penetrates the housing 2, an upper portion of the main shaft is connected to the driving pulley 3 and the clutch 4, and a lower portion of the main shaft is connected to the yarn feeding wheel 5. The yarn feeding device is characterized in that a lead frame 6, a yarn clamping device 7, a yarn knot filter 1, a front detection rod 81 and a yarn feeding porcelain ring 91 are arranged on the shell 2 on the front side of the yarn feeding wheel 5, and a yarn discharging porcelain ring 92 and a rear detection rod 82 are arranged on the shell 2 on the rear side of the yarn feeding wheel 5. The filter 1 was the filter 1 of example 1.

This scheme adopts above-mentioned knot filter 1, and the clear yarn clearance 121 inner wall that can guarantee knot filter 1 is smooth, makes things convenient for the yarn to pass through smoothly and the phenomenon that the yarn scraped hair is difficult for appearing.

In a further preferred embodiment as shown in fig. 2, the central shaft or central shaft hole 111 of the knot filter 1 is inserted or connected to the lead frame 6 through a connecting shaft 101, and the lead frame 6 is provided with a positioning post 61 or a positioning hole. The yarn knot filter 1 can axially move along the axial lead of the yarn guide frame 6, and an elastic component 102 is arranged to axially press the yarn knot filter 1. Under the elastic force of the elastic component 102, the yarn knot filter 1 and the lead frame 6 are clamped into the positioning hole 112 through the positioning column for positioning. When the yarn knot filter 1 and the lead frame 6 are clamped into the positioning hole 112 through the positioning column for positioning, the yarn knot filter 1 and the lead frame 6 are locked circumferentially. When the positioning column is released from the positioning hole 112, the filter 1 can rotate circumferentially along its axial line relative to the lead frame 6.

The following description will be made by taking an example in which the elastic member 102 is a compression spring, the yarn filter 1 is provided with a center shaft hole 111 and a positioning hole 112, and the lead frame 6 is provided with a positioning post. When the yarn knot filter 1 is installed, the compression spring is firstly sleeved on the screw, then the screw (namely the connecting shaft 101) penetrates through the central shaft hole 111 of the yarn knot filter 1, then penetrates through the lead frame 6 and then is fixed by the nut. Under the action of the pressure spring, the positioning hole 112 of the yarn knot filter 1 is sleeved on the positioning column of the lead frame 6 (the yarn knot filter 1 does not rotate). Five yarn clearing gaps 121 with different calibers are arranged on the yarn knot filter 1, a customer can select and use the yarn knot filter 1 according to different yarns, the yarn knot filter 1 is pressed downwards during adjustment and selection, the positioning hole 112 of the yarn knot filter 1 is separated from the positioning column of the lead frame 6, and the pressure spring is compressed in the process. Then the yarn knot filter 1 is rotated to a required position and released, and the yarn knot filter 1 and the lead frame 6 are positioned again by the compression spring.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims (10)

1. A knot filter characterized by: comprises a base (11) and a yarn cleaning component which is arranged and fixed on the base (11); the yarn clearing assembly comprises two yarn clearing sheets (12) which are independent of each other, and a yarn clearing gap (121) for a yarn to pass through is formed between the two yarn clearing sheets (12).

2. A nep filter according to claim 1, characterized in that: the distance between the outer ends of the two yarn clearing sheets (12) is gradually increased from inside to outside, so that the outer end of the yarn clearing gap (121) is in a conical shape.

3. A nep filter according to claim 1, characterized in that: a central shaft or a central shaft hole (111) is formed in the center of the base (11), and a plurality of yarn clearing assemblies and a plurality of positioning holes (112) or positioning columns are regularly arranged on the base (11) along the circumferential direction of the center of the base; the yarn clearing gaps (121) formed on the yarn clearing components have unequal calibers.

4. A nep filter according to any of claims 1-3, characterized in that: the base (11) comprises a bottom plate (11 a) and a top cover (11 b), and the bottom plate (11 a) and the top cover (11 b) are fixedly connected and fix the yarn clearing assembly therein; be equipped with on base (11) with clear yarn clearance (121) corresponding dodge mouth (114), the bore of dodging mouth (114) is greater than the bore of clear yarn clearance (121), and the clear yarn end of two clear yarn pieces (12) all is in dodging mouthful (114).

5. A nep filter according to claim 4, characterized in that: the upper end face of the bottom plate (11 a) and the lower end face of the top cover (11 b) are respectively provided with a connecting column (117) and a connecting groove (118) which correspond to each other, and the yarn cleaning sheet (12) is provided with a connecting through hole (122); the end of the connecting pin (117) is inserted into the connecting groove (118) through the connecting through hole (122).

6. A nep filter according to claim 5, wherein: grooves (116) are formed in the upper end face of the bottom plate (11 a) and/or the lower end face of the top cover (11 b), the combined depth of the grooves (116) is equal to the thickness of the yarn cleaning sheets (12), and the connecting columns (117) and/or the connecting grooves (118) are arranged in the grooves (116).

7. The knot filter of claim 6, wherein: the bottom plate (11 a) and the top cover (11 b) are regularly provided with a plurality of flap bodies (113) along the circumferential direction, and an avoidance port (114) is formed between every two adjacent flap bodies (113); the groove (116) is arranged on the upper end face of the bottom plate (11 a) and/or the lower end face of the top cover (11 b) along the edge of the avoiding opening (114).

8. A nep filter according to claim 4, characterized in that: the bottom plate (11 a) and the top cover (11 b) are respectively a plastic bottom plate (11 a) and a plastic top cover (11 b), and the yarn clearing sheet (12) is a ceramic sheet; the bottom plate (11 a) and the top cover (11 b) are fixed by ultrasonic welding, and a plurality of welding strips (115) are arranged on the upper end surface of the bottom plate (11 a) and/or the lower end surface of the top cover (11 b).

9. A knitting yarn conveying device comprises a shell (2), a transmission belt wheel (3) and a clutch (4) which are arranged above the shell (2), and a yarn conveying wheel (5) which is arranged below the shell (2), wherein a main shaft penetrates through the shell (2) up and down, the upper part of the main shaft is connected with the transmission belt wheel (3) and the clutch (4), and the lower part of the main shaft is connected with the yarn conveying wheel (5); a lead frame (6), a yarn clamping device (7), a yarn knot filter (1), a front detection rod (81) and a yarn feeding porcelain ring (91) are arranged on the shell (2) on the front side of the yarn conveying wheel (5), and a yarn discharging porcelain ring (92) and a rear detection rod (82) are arranged on the shell (2) on the rear side of the yarn conveying wheel (5); the method is characterized in that: the yarn knot filter (1) adopts the yarn knot filter (1) of any one of claims 1 to 7.

10. A knitting yarn conveying device comprises a shell (2), a transmission belt wheel (3) and a clutch (4) which are arranged above the shell (2), and a yarn conveying wheel (5) which is arranged below the shell (2), wherein a main shaft penetrates through the shell (2) up and down, the upper part of the main shaft is connected with the transmission belt wheel (3) and the clutch (4), and the lower part of the main shaft is connected with the yarn conveying wheel (5); a lead frame (6), a yarn clamping device (7), a yarn knot filter (1), a front detection rod (81) and a yarn feeding porcelain ring (91) are arranged on the shell (2) on the front side of the yarn conveying wheel (5), and a yarn discharging porcelain ring (92) and a rear detection rod (82) are arranged on the shell (2) on the rear side of the yarn conveying wheel (5); the method is characterized in that: the yarn knot filter (1) adopts the yarn knot filter (1) of claim 3; a central shaft or a central shaft hole (111) of the yarn knot filter (1) is penetrated or connected on the lead frame (6) through a connecting shaft (101), and a positioning column (61) or a positioning hole is arranged on the lead frame (6); the yarn knot filter (1) can axially move along the axial lead of the lead frame (6) relative to the lead frame, and an elastic component (102) is arranged to axially press the yarn knot filter (1); under the elastic force of the elastic component (102), the yarn knot filter (1) and the lead frame (6) are clamped into the positioning hole (112) through the positioning column for positioning; when the yarn knot filter (1) and the lead frame (6) are clamped into the positioning hole (112) through the positioning column for positioning, the yarn knot filter (1) and the lead frame (6) are locked in the circumferential direction; when the positioning column is disengaged from the positioning hole (112), the yarn knot filter (1) can rotate along the axial lead in the circumferential direction relative to the lead frame (6).

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