CN213538206U

CN213538206U - Needle tooth shaped metal card clothing

Info

Publication number: CN213538206U
Application number: CN202022196717.1U
Authority: CN
Inventors: 陈海涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-06-25
Anticipated expiration: 2030-09-30

Abstract

The utility model relates to a textile industry carding equipment, the metal card clothing that plays the carding effect. The metal card clothing comprises a base part and a tooth part, and the metal card clothing (rack) adopts a card tooth shape design in the same continuous tooth part. 1 is the tooth crest; 2. 3, tooth tip parts are formed by oblique straight lines on two sides of the teeth; 6. 7, the two sides of the tooth are straight lines to form the lower part of the tooth, and the two lines are parallel or approximately parallel; 4. 5 forming a circular arc connecting part between the tooth tip part and the tooth lower part; 8. 9 are respectively connecting arcs of two side surfaces of the lower part of the tooth and the tooth bottom; 10 is a tooth bottom; p is adjacent tooth pitch; 11. 12 are oblique lines at two sides of the section of the symmetrical tooth part or two side lines of the section of the asymmetrical tooth part; 2. 4, 6 and 3, 5, 7 are symmetrical or approximately symmetrical and form a needle-shaped tooth part. The scheme is favorable for puncture, grabbing, carding and fiber release of needle teeth in metal card clothing carding fibers, is favorable for processing of racks, obtains better surface state and service life, effectively reduces fiber damage, and improves carding quality and efficiency.

Description

Needle tooth shaped metal card clothing

Technical Field

The utility model relates to a textile industry spinning engineering combs the equipment field, concretely relates to tooth portion adopts the metal card clothing of latch-shaped design.

Background

The utility model relates to a metal card clothing is the main component of combing that is used for combing equipment, including carding machine cylinder, licker-in, fixed apron, open etc. with metal card clothing to and the scutching equipment is with, the air current spins metal card clothing etc. for the carding roller. The main function of these metallic card clothing is to grip, hold, comb and transfer the card object, i.e. the fibres. With the trend toward higher production of carding equipment, certain improvements in carding elements are needed to accommodate new changes and improve carding performance.

The metal card clothing (also called rack) is composed of tooth parts which are arranged continuously and have the same base and the same orientation, and the shape and the size of the adjacent tooth parts are the same. Each tooth part consists of a tooth top surface, a tooth front surface (working surface), a tooth back surface and a tooth bottom surface. Hitherto, the single tooth form of the metal card clothing adopts an asymmetric form, namely a tooth part consisting of a tooth top surface, a tooth front surface and a tooth rear surface is in an asymmetric form, the included angle of a tooth tip is larger, and the tooth part inclines towards the tooth front surface; the latest tooth profile designs have the schemes of tooth front double teeth (patent 201110165025.3 and 201620392170.3), tooth top surface double teeth (patent 201520300651.2), tooth top surface large plane (patent 201580015551.8), tooth top surface double crest (patent 201880055849.8), adjacent tooth dislocation (patent 201710105883.6 and 201810044501.8) and the like, and the tooth profiles are all characterized by being in an asymmetric form.

Disclosure of Invention

The utility model aims at providing a metal card clothing of novel profile of tooth design is favorable to combing the puncture of needle tooth in the fibre, snatchs, the carding, release fibre, also is favorable to the processing of rack to obtain better surface state and life, thereby effectively reduce the fibre damage, improve carding quality and efficiency.

The utility model discloses specific technical scheme is: the metal card clothing comprises a base part and a tooth part, wherein the base part comprises a common base part and a self-locking base part. The metal card clothing (rack) adopts the design of the needle tooth shape on the tooth part based on the existing base part form.

1 is the tooth crest, namely the tooth crest is in a sharp top form; 2. 3 is an oblique straight line on two sides, the upper end is converged at 1 to form a tooth tip part, and the included angle between 2 and 3 is a tooth sharp angle beta, which takes a value of 8-25 degrees and reflects the sharpness of the needle tooth shape.

6. 7, the two sides of the tooth are straight lines to form the lower part of the tooth, and the two lines are parallel or approximately parallel; the ratio of the tooth depth h6 to the pitch w, h6 to w ranges from 3.5 to 6.5.

4. 5 form arc connecting parts at two sides of the tooth tip parts 2 and 3 and the tooth lower parts 6 and 7; 4. the value of the radius of the 5 arc must ensure a smooth connection of 2, 6 and 3, 7.

8. 9 are respectively connecting arcs of two side surfaces 6 and 7 of the lower part of the tooth and a tooth bottom surface 10; 8. the value of the radius of the arc of 9 is such as to ensure a smooth connection of 6, 10 and 7, 10, and to take a value close to the maximum value in order to obtain sufficient strength of the toothing.

P is adjacent tooth pitch; alpha 1 is a tooth rake angle, and the value range is-15 degrees to 35 degrees; alpha 2 is a needle tooth angle, and the value range is 0-40 degrees; α 2= α 1+ β/2.

11. 12 are oblique lines at two sides of the section of the symmetrical tooth part or two side lines of the section of the asymmetrical tooth part; h6 is the tooth depth, b2 is the tooth (bottom) width; b3 is the tooth top width, the value range is 0.04-0.15 mm; b, determining the sharpness of the section direction of the tooth part by an included angle theta between 3 and 11 and 12, wherein the value range of theta is 6-12 degrees; the section of the symmetrical tooth part is more reasonable, the carding effect is better, and e is the deviation value of the center line of the section of the symmetrical tooth part and 11.

2. 4, 6 and 3, 5, 7 are symmetrical or approximately symmetrical and form an approximately needle-shaped tooth part.

The utility model has the advantages that: in the process of carding fibers or strands, compared with a sawtooth rack, the needle-tooth rack has sharper tooth tips and thinner tooth bodies, and can obtain more excellent fiber puncturing, holding, carding and releasing performances; the needle-tooth-shaped rack has better hardenability; the fiber is easily fully polished to obtain more excellent smooth surface roughness, and the cutting damage of edges and corners of the tooth parts to the fibers is reduced. Therefore, the needle-tooth-shaped rack has better carding quality and efficiency, and is reflected in better fiber straightening degree, fewer yarn neps, hairiness and short fibers and better yarn evenness. In open-end spinning, the carding roller adopts a needle-tooth-shaped rack, so that the needle-tooth-shaped rack has better performances of puncturing, carding (separating) and transferring fibers, and the defect that the fibers are struck by friction in the sawtooth-shaped rack carding process is overcome. In addition, the needle-tooth-shaped rack has a unique shape and good heat treatment and polishing manufacturability, so that the needle-tooth-shaped rack is beneficial to keeping the sharpness of the needle tooth and slowing down the surface abrasion in the application process, and has longer service life.

Drawings

Fig. 1 is a schematic structural diagram of the present invention, and is a schematic structural diagram (front view) of embodiment 1;

fig. 2 is a schematic structural view (side view) of the present invention and case 1 thereof, which is a cross-sectional form of a common base part and symmetrical teeth;

fig. 3 is a schematic structural view (side view) of the present invention and case 1 thereof, which is a cross-sectional form of a general base part and an asymmetric tooth part;

fig. 4 is a schematic structural view (front view) of case 2 of the present invention;

fig. 5 is a schematic structural view (side view) of the present invention and case 2 thereof, which is a cross-sectional form of a self-locking base portion and symmetrical teeth;

fig. 6 is a schematic structural view (side view) of the present invention and case 1 thereof, which is a self-locking base portion and an asymmetric tooth portion cross-sectional shape.

Detailed Description

Example 1 fig. 1 shows a metallic card clothing structure for a fixed cover plate, fig. 2 is a side view of fig. 1, comprising: 1 is the tooth top, 2, 3 forms the tooth tip, the included angle beta of the tooth tip is 20 degrees; 6. 7 form the lower part of the tooth with two parallel sides, and the width w is 0.20 mm; 4. 5, connecting circular arcs are formed at the two sides of the tooth tip parts 2 and 3 and the tooth lower parts 6 and 7, and the radius R3 of the symmetrical circular arcs is 1.50 mm; the total height h1 of the rack is 2.50mm, the pitch P of the rack is 2.20mm, the depth h6 of the rack is 1.00mm, and the ratio of h6 to w is 5; 8. 9 are respectively the connecting circular arcs of the lower parts 6 and 7 of the teeth and the two sides of the tooth bottom 10, and the radius of the circular arcs is respectively 0.20mm for R1 and 0.50mm for R2; α 1 is a tooth rake angle, α 2 is a needle angle, α 2= α 1+ β/2, in this example α 1 is 15 °, so α 2 is 25 °; 11. 12, a tooth part symmetrical section is formed, the tooth part width b2 is 0.25mm, the tooth crest width b3 is 0.06mm, the tooth part symmetrical section included angle theta is 9.05 degrees, and the offset e from the tooth part symmetrical center to the left side is 0.125 mm; this example takes the form of a conventional base, 0.50mm for the base width b1 and 1.30mm for the base height h 2.

Example 2 fig. 4 shows a metal card clothing structure for a taker-in cylinder, fig. 5 shows a side view of fig. 4, comprising: 1 is the tooth top, 2, 3 forms the tooth tip, the included angle beta of the tooth tip is 20 degrees; 6. 7 form the lower part of the tooth with two parallel sides, and the width w is 0.50 mm; 4. 5, connecting circular arcs are formed at the two sides of the tooth tip parts 2 and 3 and the tooth lower parts 6 and 7, and the radius R3 of the symmetrical circular arcs is 2.00 mm; the total height h1 of the rack is 5.00mm, the pitch P of the rack is 2.00mm, the depth h6 of the rack is 2.50mm, and the ratio of h6 to w is 5; 8. 9 are respectively the connecting circular arcs of the lower parts 6 and 7 of the teeth and the two sides of the tooth bottom 10, and the radius of the circular arcs is respectively 0.40mm for R1 and 1.00mm for R2; α 1 is a tooth rake angle, α 2 is a needle angle, α 2= α 1+ β/2, in this example α 1 is 20 °, so α 2 is 30 °; 11. 12, a symmetrical section of a tooth part is formed, the tooth part width b2 is 0.25mm, the tooth crest width b3 is 0.06mm, the included angle theta of the symmetrical section of the tooth part is 8.17 degrees, and the offset e from the symmetrical center of the section of the tooth part to the left side is 0.30 mm; this example takes the form of a self-locking base with a base pitch b6 of 1.59mm, a base height h2 of 1.50mm and a V-shaped base with an internal angle k of 90.

Claims

1. The needle-shaped metal card clothing is characterized in that: the tooth part is designed in a needle tooth shape, namely, the tooth part comprises a tooth top point, a tooth tip part and a tooth lower part, two straight lines meeting the tooth top point form a tooth tip angle, the tooth tip part is smoothly connected with circular arcs on two sides of the tooth lower part, and the tooth lower part is smoothly connected with arc light on two sides of a tooth bottom surface.

2. The clothing of claim 1, wherein: the range of the tooth tip angle is 8-25 degrees.

3. The clothing of claim 1, wherein: the two sides of the lower part of the tooth are parallel straight lines, and the ratio of the tooth depth h6 to the distance w between the parallel lines is 3.5-6.5.

4. The clothing of claim 1, wherein: the tooth rake angle alpha 1 of the tooth part ranges from minus 15 degrees to 35 degrees, and the needle tooth angle alpha 2 ranges from 0 degrees to 45 degrees.

5. The clothing of claim 1, wherein: the tooth section form comprises a symmetrical section and an asymmetrical section, the tooth crest width b3 ranges from 0.04mm to 0.15mm, and the included angle theta of the tooth section ranges from 6 degrees to 12 degrees.