CN112981620B - Curved working surface metal card clothing - Google Patents

Curved working surface metal card clothing Download PDF

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Publication number
CN112981620B
CN112981620B CN202110274613.4A CN202110274613A CN112981620B CN 112981620 B CN112981620 B CN 112981620B CN 202110274613 A CN202110274613 A CN 202110274613A CN 112981620 B CN112981620 B CN 112981620B
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arc
shaped surface
convex arc
card clothing
point
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CN112981620A (en
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张永钢
张境泉
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Guangshan White Shark Card Clothing Co ltd
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Guangshan White Shark Card Clothing Co ltd
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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01GPRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/84Card clothing; Manufacture thereof not otherwise provided for

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

The invention relates to a curved working surface metal card clothing, which comprises a base and sawteeth, wherein the front surfaces of the sawteeth consist of a linear inclined surface, a convex arc surface and a concave arc surface; the convex arc-shaped surface is a transition surface of the linear inclined surface and the concave arc-shaped surface, arcs of the convex arc-shaped surface are respectively tangent with the arcs of the linear inclined surface and the concave arc-shaped surface, and the convex arc-shaped surface is positioned at 1/3-1/2 of the distance between the highest point and the base of the sawtooth; the surface of the convex arc-shaped surface is electroplated with nano-scale diamond-like carbon particles through a fixed-point composite coating; the hardness of the convex arc-shaped surface is not less than 960 HV. According to the metal card clothing, the working surface of the card teeth is composed of three sections, so that the concentration of acting force of fibers on the second point of the working edge is reduced, the hardness and the strength of the second point of the working edge are improved, the transfer of the fibers at the second point is facilitated, and the service life of the card teeth is prolonged.

Description

Curved working surface metal card clothing
Technical Field
The invention belongs to the technical field of spinning equipment, relates to card clothing, and particularly relates to curved working surface metal card clothing.
Background
The metallic card clothing has a carding capacity for good holding and penetration of the fibers and is an important carding element in the spinning process. Metallic card clothing is widely used in carding elements such as cylinders, licker-ins, doffers, carding rolls and the like. In the long-term carding process of the metal card clothing, the tooth tips penetrate and comb the fibers and rub with the fibers to generate a wear phenomenon, wherein the most serious wear is the wear of the second point of the working edge. During the process of carding the fibers, one side of the needle teeth can penetrate into the fibers along the moving direction of the needle teeth to generate mutual friction with the fibers, and the side (or surface) of the needle teeth, which interacts with the fibers, is called as a working side (or working surface). The shape of the working edge of the needle tooth is generally formed by connecting a straight line section and a concave arc bottom circle section, wherein the point where the straight line section is connected with the concave arc bottom circle section is called a second working edge point (actually, on the needle tooth, the second working edge point does not refer to a specific certain point on the needle tooth, but is the intersection of the straight line section and the concave arc bottom circle section of the working surface of the pointer tooth. When the latch work limit produced the effort with fibre looks mutual friction, the fibre slides to latch bottom by the prong along the work limit, at the slip in-process, the fibre can produce wearing and tearing to latch work limit, wherein to the wearing and tearing of work limit second point especially serious, consequently in actual production process, after work limit second point produces phenomenons such as opening because of wearing and tearing, the card clothing weakens greatly to fibrous carding ability, lead to the fibre carding quality to worsen simultaneously, very big influence the life of card clothing, the production burden of enterprise has been increased.
In order to increase the service life of the card clothing, the commonly used method is to perform electromagnetic strengthening and plating composite penetration technology on the surface of the metal card clothing, and to increase the surface hardness of different geometric parts of the card clothing at fixed points, thereby reducing the friction coefficient of the surface of the card teeth. For example, the hardness of the tip of the card clothing of the carding machine cylinder is improved from 890HV to 1200HV, the hardness of the second point of the card clothing is improved from 430HV to 930HV, the use period of cotton fiber carding is improved from 800t to more than 1600t, and the cellulose fiber is improved from 800t to more than 1200t, so that the material and equipment maintenance cost of spinning enterprises is effectively reduced, and meanwhile, the reasonable tooth profile design stably improves the product quality.
In addition, the damage effect of the fibers on the needle teeth can be effectively reduced by changing the shape of the needle teeth. The straight line segment of the working edge and the tooth bottom circle R determine the trend and the state of the card clothing moving in front of the teeth. When the circle R of the tooth bottom is longer than the side of the straight line section, the fiber is easy to sink into the tooth bottom, the more concentrated the abrasion points are, the deeper the groove is, and the shorter the abrasion time is; the circle R at the bottom of the tooth is smaller than the side length of the straight line segment, fibers are not easy to sink into the bottom of the tooth, the more dispersed the abrasion points are, the more dispersed the grooves are, and the longer the abrasion time is.
The invention optimizes the geometric shape of the working edge of the pin gear to ensure that during the process of sliding the fiber along the working edge of the pin gear, the friction acting force of the fiber on the second point of the working edge of the needle teeth is more uniform and is not easy to concentrate, because the second point of the working surface of the pin tooth is changed into a complete concave arc-shaped surface from the original joint of the linear inclined surface and the convex arc-shaped surface, the direction of the acting force of the fiber on the pin tooth at the second point can be changed, the transfer of the fiber at the second point is more facilitated, the concentration action of the fiber on the working edge of the pin tooth, particularly the second point of the working edge, is reduced, meanwhile, the composite coating technology is adopted to strengthen the fixed point hardness of different points of the working edge of the pin gear, therefore, the abrasion effect of the fiber on the needle teeth is effectively reduced, the service life and the duration of the needle teeth are prolonged, the material and equipment maintenance cost of spinning enterprises is effectively reduced, and the product quality is also improved.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide a curved working surface metal card clothing.
A curved working surface metal card clothing comprises a base and sawteeth, wherein the front faces of the sawteeth consist of linear inclined planes, convex arc-shaped faces and concave arc-shaped faces;
the convex arc-shaped surface is a transition surface of the linear inclined surface and the concave arc-shaped surface, arcs of the convex arc-shaped surface are respectively tangent with the arcs of the linear inclined surface and the concave arc-shaped surface, and the convex arc-shaped surface is positioned at 1/3-1/2 of the distance between the highest point and the base of the sawtooth;
the surface of the convex arc-shaped surface is electroplated with nano-scale diamond-like carbon particles through a fixed-point composite coating;
the hardness of the convex arc-shaped surface is not less than 960 HV.
As a preferred technical scheme:
according to the curved working surface metal card clothing, the distance between the highest point of the saw tooth and the base is 1-4 mm.
The curved working surface metal card clothing is characterized in that the length of the linear inclined plane is 0.5-2 mm, and the included angle between the linear inclined plane and the base is 20-40 degrees.
According to the curved working surface metal card clothing, the arc length of the convex arc-shaped surface is 0.2-0.5 mm, and the included angle between the tangent line at the midpoint of the arc length of the convex arc-shaped surface and the base is 15-20 degrees.
According to the curved working surface metal card clothing, the arc length of the concave arc-shaped surface is 3-6 mm, and the included angle between the tangent line of the joint of the concave arc-shaped surface and the convex arc-shaped surface and the base is 135-155 degrees.
The hardness of the linear inclined plane of the curved working surface metal card clothing is 1100-1300 HV.
According to the curved working surface metal card clothing, the hardness of the concave arc-shaped surface is 500-800 HV. The difference of the working surface of the saw tooth and the hardness of the points are related to the manufacturing process of the saw tooth, and the manufacturing process route of the whole card clothing is as follows: tooth profile design → card clothing manufacturing (quenching and rolling off line) → high-frequency tempering → secondary coil material plasma processing → composite coating technology → finished product warehousing, and because the frequency and the temperature of high-frequency tempering are different at different parts of the sawtooth during manufacturing, the hardness of different positions of the working surface of the card tooth is different.
The curved working surface metal card clothing is characterized in that the nanoscale diamond-like carbon particles are SiC and Al2O3、MoS2Or SiO2The particle size of the nano-scale diamond-like carbon particles is 0.003-0.005 mm, and the hardness is more than or equal to 4000 HV. The nano-scale diamond-like particles are dispersed in the coating, and the strength and hardness of the nano-scale diamond-like particles play a role in integrally supporting the coating and strengthening the coating; the nano-scale diamond-like carbon has extremely large specific surface area and surface activity, can firmly permeate or adsorb a friction surface to form an extremely thin solid lubricating film, and forms a bearing effect on the metal surface, thereby greatly reducing the friction coefficient; the small size effect of the nano-scale diamond-like carbon enables the metal of the coating to be combined more firmly, and effectively improves the bonding strength of the coating.
The curved working surface metal card clothing is characterized in that the linear inclined surface, the convex arc-shaped surface and the concave arc-shaped surface are all made of stainless steel.
The principle of the invention is as follows:
the core point of the invention is that the shape of the needle tooth working surface is designed, and the structure formed by three sections of the straight line section, the convex arc surface and the concave arc surface is mainly changed from the structure formed by two sections of the tooth bottom of the existing needle tooth working surface directly transiting from the straight line section to the concave arc surface. The junction between the straight section working face and the concave arc face (commonly referred to as the second point of the working edge of the pin tooth) is highly susceptible to wear due to the combined effects of the pin tooth manufacturing process and the sliding friction of the fibers on the pin tooth. The invention changes the second point of the original needle tooth working edge into the convex arc surface by changing the shape of the needle tooth working surface and arranging the convex arc transition surface between the straight line section working surface and the concave arc surface, the acting force of the fiber on the needle tooth working surface is changed along with the change of the shape of the needle tooth working surface when the fiber slides to the second point of the needle tooth working edge due to the change of the shape of the needle tooth, generally speaking, the acting force of the fiber on the needle tooth working surface can be decomposed into a component force acting downwards along the needle tooth working surface and a component force acting vertical to the needle tooth working surface, when the fiber slides downwards along the straight line section of the needle tooth working surface, the component force acting downwards along the needle tooth working surface only generates a wear action on the needle tooth working surface without other influences, when the fiber moves to the second point of the working edge, because the second point of the needle tooth working edge in the prior art is a straight line section directly transited to the concave arc section, the second point of the working edge of the needle tooth is a convex arc section, the downward acting component force of the fiber along the working surface of the needle tooth can not generate striking action on the second point of the working edge of the needle tooth, the damage action of the abrasion of the area of the needle tooth on the second point of the working edge of the needle tooth can be reduced, the damage action of the fiber on the needle tooth can be reduced, therefore, after the needle tooth combs the fiber for a long time, the second point of the working edge of the needle tooth is not easy to generate a gap caused by abrasion, and the service life of the card clothing is greatly prolonged. The invention also adopts the nanometer diamond-like carbon composite coating technology to electroplate the nanometer diamond-like carbon particles on the convex arc-shaped surface section of the needle tooth at fixed points, thereby not only enhancing the hardness of the convex arc-shaped surface (the second working point of the needle tooth), but also playing an integral supporting role on the hardness and the strength of the convex arc-shaped surface section of the needle tooth; in addition, the nano-scale diamond-like carbon has extremely large specific surface area and surface activity, can firmly permeate or adsorb a friction surface to form an extremely thin solid lubricating film, and forms a bearing effect on the metal surface, so that the friction coefficient of a convex arc-shaped surface (a second working point of the pin teeth) can be greatly reduced, and the transfer of fibers at the convex arc-shaped surface is facilitated.
Advantageous effects
Compared with the prior art, the curved working surface metal card clothing has the following advantages:
(1) according to the curved working surface metal card clothing, the needle tooth working surface is composed of three sections, so that the concentration of acting force of fibers on a second point of the needle tooth working edge is reduced, and the abrasion effect of the fibers on the needle tooth is reduced;
(2) according to the curved working surface metal card clothing, the nanoscale diamond-like carbon coating is fixed on the convex arc surface at the second working point of the working edge of the card tooth, so that the hardness and the strength of the convex arc surface at the second point of the working edge are improved, the friction coefficient at the second point of the working edge is reduced, the transfer of fibers at the second point is facilitated, and the service life of the card tooth is prolonged.
Drawings
FIG. 1 is a schematic structural view of a curved work surface metallic card clothing of the present invention;
in the figure, 1 is a sawtooth, 2 is a base, 3 is a linear inclined plane, 4 is a convex arc surface, and 5 is a concave arc surface.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
A curved working surface metal card clothing is shown in figure 1 and comprises a base 2 and saw teeth 1 (the height of the highest point of each saw tooth 1 from the base 2 is 1-4 mm);
the front surface of the sawtooth 1 consists of a linear inclined surface 3, a convex arc surface 4 and a concave arc surface 5; the convex arc-shaped surface 4 is a transition surface of the linear inclined surface 3 and the concave arc-shaped surface 5, the circular arcs of the convex arc-shaped surface 4 are respectively tangent with the circular arcs of the linear inclined surface 3 and the concave arc-shaped surface 5, and the linear inclined surface 3, the convex arc-shaped surface 4 and the concave arc-shaped surface 5 are all made of stainless steel;
the length of the linear inclined plane 3 is 0.5-2 mm, and the included angle between the linear inclined plane 3 and the base 2 is 20-40 degrees; the linear inclined plane 3 has the hardness of 1100-1300 HV;
the convex arc-shaped face 4 is positioned at 1/3 to 1/2 of the distance between the highest point of the sawtooth 1 and the base 2; the arc length of the convex arc-shaped surface 4 is 0.2-0.5 mm, and the included angle between the tangent line at the arc length midpoint of the convex arc-shaped surface 4 and the base part 2 is 15-20 degrees; the hardness of the convex arc-shaped surface 4 is not less than 960 HV; the surface of the convex arc-shaped surface 4 is electroplated with nano-scale diamond-like carbon particles (specifically SiC and Al) through a fixed-point composite coating2O3、MoS2Or SiO2) The particle size of the nano-scale diamond-like carbon particles is 0.003-0.005 mm, and the hardness is more than or equal to 4000 HV;
the arc length of the concave arc-shaped surface 5 is 3-6 mm, and the included angle between the tangent line of the joint of the concave arc-shaped surface 5 and the convex arc and the base part 2 is 135-155 degrees; the hardness of the concave arc-shaped surface 5 is 500-800 HV.
The junction between the straight section working face and the concave arc face (commonly referred to as the second point of the working edge of the pin tooth) is highly susceptible to wear due to the combined effects of the pin tooth manufacturing process and the sliding friction of the fibers on the pin tooth. Through the shape that changes the latch working face, set up convex arc's transition face between straightway working face and concave arc face, become original latch working edge second point into convex arc face, because the change of latch shape, the fibre is when sliding latch working edge second point, and the fibre can change to the direction under the effect of latch, and the damage effect to latch working edge second point can reduce, and consequently the fibre can reduce the damage effect of latch.
The specific using process of the metal card clothing with the curved working surface comprises the following steps:
the JSC326 carding machine, 1.33dtex is multiplied by 38mm cellulose fiber, when using with ordinary metal card clothing, the total amount of carding fiber is not more than 800 tons, the total amount of carding fiber is not more than 1200 tons using diamond-like coating metal card clothing, when using the curved working surface metal card clothing of the invention, the total amount of carding fiber can reach 2300 tons, the carding quality is good, the cost performance is obvious.

Claims (6)

1. The utility model provides a curved working face metal card clothing, includes basal portion and sawtooth, characterized by: the front surface of the sawtooth consists of a linear inclined surface, a convex arc surface and a concave arc surface;
the convex arc-shaped surface is a transition surface of the linear inclined surface and the concave arc-shaped surface, arcs of the convex arc-shaped surface are respectively tangent with the arcs of the linear inclined surface and the concave arc-shaped surface, and the convex arc-shaped surface is positioned at 1/3-1/2 of the distance between the highest point and the base of the sawtooth;
the length of the linear inclined plane is 0.5-2 mm, and the included angle between the linear inclined plane and the base is 20-40 degrees;
the arc length of the convex arc-shaped surface is 0.2-0.5 mm, and the included angle between the tangent line at the arc length midpoint of the convex arc-shaped surface and the base is 15-20 degrees;
the arc length of the concave arc-shaped surface is 3-6 mm, and the included angle between the tangent line of the joint of the concave arc-shaped surface and the convex arc-shaped surface and the base is 135-155 degrees;
the surface of the convex arc-shaped surface is electroplated with nano-scale diamond-like carbon particles through a fixed-point composite coating;
the hardness of the convex arc-shaped surface is not less than 960 HV.
2. The curved work surface metallic card clothing of claim 1, wherein the height of the highest point of said serrations from said base is 1-4 mm.
3. The curved work surface metallic card clothing of claim 1, wherein the hardness of said straight bevel is 1100-1300 HV.
4. The curved work surface metallic card clothing of claim 1, wherein the hardness of said concave arc-shaped surface is 500-800 HV.
5. The curved working surface metal card clothing of claim 1, wherein the nano-scale diamond-like particles are SiC, Al2O3、MoS2Or SiO2The particle size of the nano-scale diamond-like carbon particles is 0.003-0.005 mm, and the hardness is more than or equal to 4000 HV.
6. The curved work surface metallic card clothing of claim 1, wherein the straight bevel, convex arc and concave arc are all stainless steel.
CN202110274613.4A 2021-03-15 2021-03-15 Curved working surface metal card clothing Active CN112981620B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4336420A1 (en) * 1992-10-22 1994-04-28 Boehler Ybbstalwerke Card clothing - has welded sawtooth construction from two grades of steel
CN101189374A (en) * 2005-05-30 2008-05-28 贝卡尔特股份有限公司 Card clothing wire with oxide-free surface
CN102733012A (en) * 2011-04-08 2012-10-17 格拉夫及西有限公司 Saw-tooth clothing
CN103890252A (en) * 2011-09-15 2014-06-25 贝卡尔特公司 Card wire with improved tooth shape
CN205741350U (en) * 2016-05-04 2016-11-30 光山白鲨针布有限公司 A kind of composite deposite Bearded-needle knitted cloth
CN106319692A (en) * 2016-11-15 2017-01-11 江苏普美纺织有限公司 Card clothing of rotor spinning combing roller
CN205974784U (en) * 2016-06-17 2017-02-22 内蒙古鄂尔多斯资源股份有限公司 High -efficient antifriction metal (AFM) card clothing
CN212175100U (en) * 2020-02-28 2020-12-18 金轮针布(江苏)有限公司 Fiber carding transfer rack

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4336420A1 (en) * 1992-10-22 1994-04-28 Boehler Ybbstalwerke Card clothing - has welded sawtooth construction from two grades of steel
CN101189374A (en) * 2005-05-30 2008-05-28 贝卡尔特股份有限公司 Card clothing wire with oxide-free surface
CN102733012A (en) * 2011-04-08 2012-10-17 格拉夫及西有限公司 Saw-tooth clothing
CN103890252A (en) * 2011-09-15 2014-06-25 贝卡尔特公司 Card wire with improved tooth shape
CN205741350U (en) * 2016-05-04 2016-11-30 光山白鲨针布有限公司 A kind of composite deposite Bearded-needle knitted cloth
CN205974784U (en) * 2016-06-17 2017-02-22 内蒙古鄂尔多斯资源股份有限公司 High -efficient antifriction metal (AFM) card clothing
CN106319692A (en) * 2016-11-15 2017-01-11 江苏普美纺织有限公司 Card clothing of rotor spinning combing roller
CN212175100U (en) * 2020-02-28 2020-12-18 金轮针布(江苏)有限公司 Fiber carding transfer rack

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