CN104537214B - Determination method for total tooth number of whole cylinder of cotton combing machine - Google Patents
Determination method for total tooth number of whole cylinder of cotton combing machine Download PDFInfo
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- CN104537214B CN104537214B CN201410781076.2A CN201410781076A CN104537214B CN 104537214 B CN104537214 B CN 104537214B CN 201410781076 A CN201410781076 A CN 201410781076A CN 104537214 B CN104537214 B CN 104537214B
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Abstract
A determination method for the total tooth number of a whole cylinder of a cotton combing machine comprises the following steps: (1) establishing a mathematical model of a combing degree of the cylinder of the combing machine according to a cotton feeding manner; (2) determining the number M of fibers in a cotton layer according to the formula: M=Ty/Tx*(1-a), wherein Tx and Ty are average linear densities of fibers and small rolls and a is a cotton dropping rate of the combing machine; and determining the total tooth number of the whole cylinder of the combing machine. The mathematical model of the combing degree of the cylinder is established by the tooth number of a fiber combed needle in a working cycle and the repeated combing times of the fibers through the combing machine, and the total tooth number of the whole cylinder of the cotton combing machine is determined under a forward cotton feeding manner and a backward cotton feeding manner by utilizing process parameters including the linear density of the fibers, the linear density of the small rolls, the cotton feeding length, a separation distance and the like; theoretical and technical supports are provided for designing and selecting the whole cylinder of the combing machine.
Description
Technical field
The present invention relates to the technical field of Combing, specifically it is related to a kind of total number of teeth of cotton comber integral cylinder
Determine method.
Background technology
Combing cylinder is the main carding element on cotton comber, its effect be using the pin tooth on cylinder to feed
Enter rouleau and carry out combing, to exclude cotton knot, impurity and chopped fiber, and the stretching of fiber in yarn, parallel and separating degree can be improved,
Its carding effect has a major impact to yarn quality.The total number of teeth of cylinder is very few, and pin tooth is insufficient to cotton clump combing, yarn quality
Poor, can not meet the process requirements of high-grade yarn.The total number of teeth of cylinder excessive it is meant that gap between cylinder pin tooth and pin tooth
Reduce, cause the fine amount of appearance of cylinder pin between cog in carding process to reduce, and make the surface fibre that nipper grips be not easy to be combed
Thoroughly, affect carding quality;The damage of fiber, the processing and manufacturing difficulty increasing cotton noils rate, making cylinder pin tooth can be caused simultaneously
Increase, the service life of impact cylinder.
How the total number of teeth of cotton comb cylinder, existing skill are determined according to aggregative indicatores such as fiber species, combing parameters
Effective method is lacked, thus causing difficulty to the design of the total number of teeth of cotton comber integral cylinder, the selection of cylinder in art.
Content of the invention
The purpose of the present invention is the determination overcoming above technical problem to propose a kind of total number of teeth of cotton comber integral cylinder
Method, its using Cylinder Carding degree, fiber linear density, rouleau line density, to cotton length, separate the technological parameter such as gauge and determine
Total number of teeth of cotton comber integral cylinder, the design for combing machine whole tin tips provides theoretical and technical support with selecting.
In order to achieve the above object, the present invention adopts the following technical scheme that: a kind of total number of teeth of cotton comber integral cylinder
Determination method, step is as follows: (1) is according to the mathematical model setting up combing cylinder Carding Degree to cotton mode;
(2) determine number of fiber m in cotton layer:Wherein, tx、tyIt is respectively the average of fiber and rouleau
Line density, a is the linters rate of combing machine;
(3) determine the total number of teeth of combing machine whole tin tips.
Described include advancing to cotton and retreating to one of cotton or two kinds to cotton mode.
The method of the described mathematical model setting up combing cylinder Carding Degree is:
1. a fiber in one cycle of operation of combing machine by card wire number of teeth z is:Wherein, z is the total tooth of cylinder
Number;
2. in a cycle of operation, nipper grip fibre bundle by Cylinder Carding once, often through a cycle of operation,
Forward impelling is given cotton length a for one by feed roll motor, then advance to the recarding frequency n suffered by fiber during cotton1For:Retreating to the recarding number of times suffered by fiber during cotton is n2:Wherein, b be separate every
Away from δ is the dead space length of nipper;
3. the Carding Degree c advancing to cotton1For:Retreat to the Carding Degree c of cotton2For:
Described total number of teeth z of cylinder advanced to cotton1For:Retreat to cotton z2For:
The described Carding Degree c advancing to cotton1Numerical range be: c1=0.2-0.27, retreats to the Carding Degree c of cotton2Number
Value scope is c2=0.4-0.57, the numerical range to cotton length a is 4.3-5.9mm, and the numerical range separating gauge b is 20-
26mm.
The present invention is subject to repeating suffered by the card wire number of teeth and fiber using a fiber in one cycle of operation of combing machine
Carding times set up the mathematical model of Cylinder Carding degree, and using fiber linear density, the line density of rouleau, to cotton length, separate
The technological parameters such as gauge advance to cotton to determine and retreat to total number of teeth of cotton comber integral cylinder under cotton mode, are combing machine
The design of integral cylinder provides theoretical and technical support with selecting.
Specific embodiment
With reference to embodiment, the present invention is further illustrated.
Embodiment 1
A kind of determination method of the total number of teeth of cotton comber integral cylinder, step is as follows:
(1) according to the mathematical model setting up combing cylinder Carding Degree to cotton mode;
Act on intensity on fiber to evaluate combing cylinder, employ the index of Carding Degree, it is defined as one
Fiber is from beginning combing to the pin number of teeth being completely segregated suffered Cylinder Carding.Under conditions of not considering cotton noils rate,
A fiber in one cycle of operation of combing machine by card wire number of teeth z is:
In formula: z is the total number of teeth of cylinder, m is the radical of fiber in cotton layer.
In a cycle of operation, the fibre bundle that nipper grips by Cylinder Carding once, then often follows through a job
Ring, forward impelling is given cotton length for one by feed roll motor.Thus can obtain, advance to cotton with retreat to the weight suffered by fiber during cotton
Multiple carding times n1、n2It is respectively as follows:
In formula, a is to cotton length, and b is to separate gauge, and δ is the dead space length of nipper.
Carding Degree is a fiber from starting combing to the pin number of teeth being completely segregated suffered Cylinder Carding, i.e. a work
A fiber in circulating is subject to the product of the card wire number of teeth and suffered recarding number of times.Therefore, advance to cotton and retrogressing
Carding Degree c to cotton1、c2It is respectively as follows:
Can be obtained by formula (4), formula (5), the card wire on cylinder is more, card wire is stronger to the effect of fiber;
The fiber simultaneously combed is fewer, and active force on each fiber for the card wire is bigger.
Required according to Combing Quality and production practices can obtain c1And c2Empirical value scope be respectively as follows: c1=0.2-0.27,
c2=0.4-0.57, the scope to cotton length a is 4.3-5.9mm, and the scope separating gauge b is 20-26mm.
(2) determine the radical m of fiber in cotton layer.
If tx、tyIt is respectively the average linear density (tex) of fiber and rouleau, then do not considering Fiber Straightness and deduction essence
Under conditions of comb linters rate, in rouleau section, the radical m of fiber is:
In formula: a is the linters rate (%) of combing machine.
For medium staple cotton, the linear density range of fiber is 0.143-0.222tex, and the linear density range of lap is
55000-75000tex.
(3) determine the total number of teeth of combing machine whole tin tips.
Formula (4) and formula (5) abbreviation are deformed must advance to cotton with retreat to total number of teeth z of cylinder of cotton1、z2It is respectively as follows:
In the cotton layer that will obtain in step (2), the radical m of fiber substitutes into formula (7) and formula (8) can get, and must advance to cotton
With retreat to cotton total number of teeth z of cylinder1With retreat to cotton total number of teeth z of cylinder2.
Embodiment 2
A kind of is the determination method advanced to the total number of teeth of combing machine whole tin tips during cotton to cotton mode, and it determines step such as
Under:
(1) the requirement spinning linters rate a according to spinning quality is 10% low-grade combed yarn, takes comb according to production experience
Reason degree c1For 0.21.
(2) calculate number of fiber m in cotton layer.For medium staple cotton, the line density of fiber takes 0.15tex, to hc500 type essence
For comb, the line density of lap takes 60000tex, then during Cylinder Carding, the number of fiber m in combing rouleau section is:
(3) determine the total number of teeth of cylinder, for hc500 type combing machine, be 5.2mm to cotton length a value, the dead space of nipper is long
Degree δ is 3mm, and separating gauge b value is 20mm, then obtain total number of teeth z of cylinder by formula (7)1For:
Embodiment 3
A kind of is to retreat to the determination method of the total number of teeth of combing machine whole tin tips during cotton to cotton mode, and it determines step such as
Under:
(1) the requirement spinning linters rate a according to spinning quality is 22% quality combed yarn, takes comb according to production experience
Reason degree c2For 0.52.
(2) calculate number of fiber m in cotton layer.For medium staple cotton, the line density of fiber takes 0.15tex, to hc500 type essence
For comb, the line density of lap takes 70000tex, then during Cylinder Carding, the number of fiber m in combing rouleau section is:
(3) determine the total number of teeth of cylinder, for hc500 type combing machine, to cotton length value 4.3mm, dead space length δ of nipper
For 3mm, separating gauge b scope is value 26mm, then obtain total number of teeth z of cylinder by formula 72For:
The present invention can be close according to the line of the Cylinder Carding degree in fiber species, combing parameter, fiber linear density, rouleau
Spend, comprehensively determine the total number of teeth of cotton combing cylinder to technological parameters such as cotton length, separation gauges, to the total tooth of cotton comber integral cylinder
The design of number, the selection of cylinder provide theory support.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in,
All should be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (3)
1. a kind of determination method of the total number of teeth of cotton comber integral cylinder is it is characterised in that step is as follows:
(1) according to the mathematical model setting up combing cylinder Carding Degree to cotton mode;When being to advance to cotton to cotton mode, set up
The method of the mathematical model of combing cylinder Carding Degree is:
1. a fiber in one cycle of operation of combing machine is subject to card wire number of teeth z1For:Wherein, z1For advancing to cotton
The total number of teeth of cylinder, m is number of fiber in cotton layer;
2. in a cycle of operation, nipper grip fibre bundle by Cylinder Carding once, often through a cycle of operation, to cotton
Forward impelling is given cotton length a for one by Lora, then advance to the recarding frequency n suffered by fiber during cotton1For:Wherein b is to separate gauge, and δ is the dead space length of nipper;
3. the Carding Degree c advancing to cotton1For:
(2) determine number of fiber m in cotton layer:Wherein, tx、tyIt is respectively fiber close with the average line of rouleau
Degree, a is the linters rate of combing machine;
(3) determine total number of teeth z of cylinder that combing machine advances to cotton1For:
2. a kind of determination method of the total number of teeth of cotton comber integral cylinder is it is characterised in that step is as follows:
(1) according to the mathematical model setting up combing cylinder Carding Degree to cotton mode;When being to retreat to cotton to cotton mode, set up
The method of the mathematical model of combing cylinder Carding Degree is:
1. a fiber in one cycle of operation of combing machine is subject to card wire number of teeth z2For:Wherein, z2For retreating to cotton
The total number of teeth of cylinder, m is number of fiber in cotton layer;
2. in a cycle of operation, nipper grip fibre bundle by Cylinder Carding once, often through a cycle of operation, to cotton
Forward impelling is given cotton length a for one by Lora, then retreating to the recarding number of times suffered by fiber during cotton is n2:Wherein, b is to separate gauge, and δ is the dead space length of nipper;
3. retreat to the Carding Degree c of cotton2For:
(2) determine number of fiber m in cotton layer:Wherein, tx、tyIt is respectively fiber close with the average line of rouleau
Degree, a is the linters rate of combing machine;
(3) determine that combing machine retreats to total number of teeth z of cylinder of cotton2For:
3. the determination method of the total number of teeth of cotton comber integral cylinder according to claim 1 and 2 is it is characterised in that described
The Carding Degree c advancing to cotton1Numerical range be: c1=0.2-0.27, retreats to the Carding Degree c of cotton2Numerical range be c2=
0.4-0.57, the numerical range to cotton length a is 4.3-5.9mm, and the numerical range separating gauge b is 20-26mm.
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