SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a novel back of tooth echelonment doffer card clothing, including being flat banded basal portion, a plurality of pin teeth of all locating on the basal portion, through first concave arc line smooth connection between two adjacent pin teeth, the pin tooth includes the tooth front portion and the tooth back, the tooth back includes first back of the tooth line and locates the bellying on the first back of the tooth line, the bellying is formed by a plurality of protruding connections that are the echelonment of n, and wherein n is greater than or equal to 1.
Preferably, one end of the convex part is smoothly connected with the first tooth back line through the second concave arc line, and the other end of the convex part is connected with the first concave arc line.
Preferably, two adjacent protrusions are smoothly connected through a third concave arc line.
Preferably, the first tooth back line and the base form a first tooth back angle therebetween, and the angle of the first tooth back angle is 10-50 °.
Preferably, the stepped protrusion comprises a first formation line parallel to the base, and a second formation line smoothly connected to the first formation line through a first convex arc line, the second formation line and the base form a second tooth back angle therebetween, and the angle of the second tooth back angle is 10-50 °.
Preferably, the length of the first forming line is 0.05-1.5mm, and the height of the stepped protrusion is 0.2-2 mm.
Preferably, the tooth front part comprises a first tooth front line and a second tooth front line, one end of the second tooth front line is intersected with the first tooth front line to form a tooth point angle, the other end of the second tooth front line is connected with the first tooth back line, and the tooth point angle is 10-50 degrees.
Preferably, the first tooth front line is smoothly connected with the first concave arc line, and a working angle is formed between the first tooth front line and the base part and is 10-50 degrees.
Preferably, the total height of the doffer card clothing is 3.0-6.0mm, the tooth depth of the needle teeth is 2.0-3.8mm, and the tooth pitch of two adjacent needle teeth is 1.5-3.5 mm.
Preferably, the height of the base is 0.5-2 mm.
Has the advantages that:
(1) through set up the arch that is the echelonment on the back of the tooth among this technical scheme, the side area of latch has been increased to increased the area of contact between latch and the fibre, increased the friction between latch and the fibre, improved the doffer card clothing and snatched and the ability of gripping the fibre from the cylinder card clothing, reduced the process that the fibre was combed repeatedly, improved the degree of consistency of fibre web face, reduced the phenomenon of fibre web face applique winding flower, improved the yield of fibre web, the work efficiency of carding process has been improved.
(2) The inventor can balance the holding capacity and the releasing capacity of doffer card clothing by reasonably setting the angles of the first tooth back angle and the second tooth back angle, so that the needle teeth can keep better holding capacity and better releasing capacity, and the quality of a fiber web surface is improved.
(3) The inventor sets the width, the height and the tooth depth of the step-shaped bulge, so that the fiber accommodating quantity between two adjacent needle teeth is kept at a good degree, the rolling resistance is improved, and the service life of the doffer card clothing is prolonged.
(4) The inventor can better guide the high-speed airflow of the cylinder card clothing towards the doffer card clothing by setting the angle of a reasonable working angle, and reduce the winding knot of the fiber web.
(5) The inventor effectively improves the embedding condition of the doffer card clothing by setting the angle of the tooth tips, improves the puncturing capability of fibers and the fiber stripping capability from the cylinder card clothing, and improves the transfer rate of the carding machine.
Detailed Description
The contents of the present invention can be more easily understood by referring to the following detailed description of the preferred embodiments of the present invention and the included examples. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.
The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the number clearly indicates the singular.
In order to solve the technical problem, the utility model provides a novel back of tooth echelonment doffer card clothing, including being flat banded basal portion, a plurality of pin teeth of all locating on the basal portion, through first concave arc line smooth connection between two adjacent pin teeth, the pin tooth includes the tooth front portion and the tooth back, the tooth back includes first back of the tooth line and locates the bellying on the first back of the tooth line, the bellying is formed by a plurality of protruding connections that are the echelonment of n, and wherein n is greater than or equal to 1.
As a preferable technical solution, one end of the convex portion is smoothly connected with the first tooth back line through the second concave arc line, and the other end is connected with the first concave arc line.
As a preferable technical scheme, two adjacent bulges are smoothly connected through a third concave arc line.
The inventor sets up the arch that is the echelonment on the back of the tooth, has increased the side area of latch to increased the area of contact between latch and the fibre, increased the friction between latch and the fibre, improved the doffer card clothing and snatched and held the fibrous ability from the cylinder card clothing, reduced the fibre process of combing repeatedly, improved the degree of consistency of fibre web face, but the inventor finds that the echelonment arch has hindered the release capacity of fibre web to a certain extent.
As a preferable technical solution, a first back tooth angle is formed between the first back tooth line and the base, and the angle of the first back tooth angle is 10-50 °.
As a preferable technical solution, a first back tooth angle is formed between the first back tooth line and the base, and the angle of the first back tooth angle is 35-50 °.
As a preferable technical solution, the stepped protrusion includes a first constituent line parallel to the base, and a second constituent line smoothly connected to the first constituent line by a first convex arc line, the second constituent line and the base form a second tooth back angle therebetween, and the angle of the second tooth back angle is 10 to 50 °.
As a preferable technical solution, the stepped protrusion includes a first constituent line parallel to the base, and a second constituent line smoothly connected to the first constituent line by a first convex arc line, the first constituent line and the base form a second tooth back angle therebetween, and the angle of the second tooth back angle is 35 to 50 °.
As a preferable technical scheme, the length of the first forming line is 0.05-1.5mm, and the height of the stepped bulge is 0.2-2 mm.
As a preferred technical scheme, the height of the base part is 0.5-2 mm.
The inventor finds that through reasonably setting the angle of the first tooth back angle, the angle of the second tooth back angle, the length of the first forming line and the height of the stepped bulge, the releasing capacity of the doffer card clothing on a fiber web can be better improved, the fiber holding capacity of the doffer card clothing can be better maintained, the quality of the fiber web is improved, and the fiber carding efficiency is improved. The inventor surprisingly found that the doffer card clothing of the technical scheme also has better holding and releasing capacity for thinner fibers.
As a preferable technical scheme, the tooth front part comprises a first tooth front line and a second tooth front line, one end of the second tooth front line is intersected with the first tooth front line to form a tooth point angle, the other end of the second tooth front line is connected with the first tooth back line, and the tooth point angle is 10-50 degrees.
Preferably, the tooth front part comprises a first tooth front line and a second tooth front line, one end of the second tooth front line is intersected with the first tooth front line to form a tooth tip angle, the other end of the second tooth front line is connected with the first tooth back line, and the tooth tip angle is 35-50 degrees.
As a preferable technical solution, the first tooth front line is smoothly connected with the first concave arc line, and a working angle is formed between the first tooth front line and the base, and the working angle is 10-50 °.
As a preferable technical solution, the first tooth front line is smoothly connected with the first concave arc line, and a working angle is formed between the first tooth front line and the base, and the working angle is 35-50 °.
As a preferable technical proposal, the total height of the doffer card clothing is 3.0-6.0mm, the tooth depth of the needle teeth is 2.0-3.8mm, and the tooth pitch of two adjacent needle teeth is 1.5-3.5 mm.
The inventor finds that when the fiber containing amount between every two needle teeth is small, the carding machine can repeatedly comb the fibers for many times, the carding strength is too strong, the fibers are damaged, the number of short fibers is increased, and the quality of a fiber net is reduced. However, when the fiber volume between the needle teeth is large, the carding strength is weak, and the fibers cannot be sufficiently carded, and fiber knots are generated due to an excessively thick web layer during coagulation, so that the fibers are unevenly mixed. However, the inventors have found that by setting the tooth depth and pitch, and combining the angle of the first tooth back angle, the angle of the second tooth back angle, the length of the first formation line, and the height of the stepped projection, the fiber volume between the needle teeth can be made relatively appropriate, and the fiber transfer rate can be increased, the occurrence of fiber knots can be reduced, and the quality of the web layer can be improved.
Example 1
As shown in fig. 1, 2 and 3, the novel doffer card clothing with the stepped tooth back in the embodiment includes a flat strip-shaped base 1 and needle teeth all disposed on the base 1, the needle teeth in the embodiment include a first needle tooth 2, a second needle tooth 15, a third needle tooth 16 and a fourth needle tooth 17 which are connected in sequence, the first needle tooth 2 and the second needle tooth 15 are smoothly connected through a first concave arc line 3, an arc angle corresponding to the first concave arc line 3 is 180 °, and a first concave arc line 3 corresponding to an arc angle of 180 ° enables a fiber containing amount between the needle teeth to be increased to a certain extent.
First gear 2 includes the tooth front portion and the tooth back portion, the tooth back portion includes first tooth back line 4 and locates the bellying A on first tooth back line 4, bellying A is that the first arch 5 of echelonment and second are protruding 6 to be connected by 2 and forms, in this embodiment first arch 5 is the same with the protruding 6 structure of second. One end of the convex part A is smoothly connected with the first tooth back line 4 through the second concave arc line 7, and the other end of the convex part A is connected with the first concave arc line 3. The first protrusion 5 includes a first constituent line 9 parallel to the base 1, and a second constituent line 11 smoothly connected to the first constituent line 9 through a first convex arc line 10. The arc angle that first protruding pitch arc 10 corresponds is 60, through 8 smooth connection of third concave pitch arc between first protruding 5 and the second arch 6, the arc angle that third concave pitch arc 8 corresponds is 60, through the setting of first protruding pitch arc 10 and third concave pitch arc 8, makes the whole more level and smooth of pin tooth, has balanced the pin tooth and has held the fibre and release fibrous ability to the condition of knoing of fibre web has been reduced. The second constituent line 11 forms a second tooth back angle a2 with the base 1, the angle of the second tooth back angle a2 being 50 °. The first tooth flank line 4 forms a first tooth flank angle a1 with the base 1, the angle of said first tooth flank angle a1 being 40 °. The length b1 of the first constituent wire is 1.5mm, and the first protrusion height h3 is 2 mm. The arrangement of the stepped bulges increases the side surface area of the needle teeth, thereby increasing the contact area between the needle teeth and the fibers, increasing the friction effect between the needle teeth and the fibers, improving the capability of the doffer card clothing to grab and hold the fibers from the cylinder card clothing, reducing the process of repeatedly carding the fibers, and improving the uniformity of a fiber mesh surface. The release capacity of the doffer card clothing to the fiber web can be better improved through the angles of the first tooth back angle a1 and the second tooth back angle a2 and the sizes of the first forming line 9 and the second forming line 11, the fiber holding capacity of the doffer card clothing can be better kept, the quality of the fiber web is improved, and the fiber carding efficiency is improved. The tooth front part comprises a first tooth front line 12 and a second tooth front line 13, one end of the second tooth front line 13 is intersected with the first tooth front line 12 to form a tooth point angle 14, the other end of the second tooth front line 13 is connected with the first tooth back line 4, and the tooth point angle 14 is 35 degrees. The smooth connection of the first tooth front line 12 with the first concave curvature 3 reduces the phenomenon of web intarsia, the first tooth front line 12 forming an operating angle a with the base 1, the operating angle a being 45 °. When the working angle a is 45 degrees, the doffer card clothing can transfer more fibers from the cylinder card clothing, and the transfer efficiency of the doffer card clothing is improved.
The total height of the doffer card clothing is 6mm, the tooth depth of the needle teeth is 3.8mm, the height of the base is 2mm, and the tooth pitch p between the first needle teeth 2 and the second needle teeth 15 is 3.5 mm. The height of the first component line from the tip of the cusp is 0.6 mm. By setting the tooth depth and the tooth pitch, the angle of a first tooth back angle, the angle of a second tooth back angle, the length of a first formation line and the height of the stepped bulge are combined, so that proper inter-tooth capacity fiber quantity can be obtained between the needle teeth, the fiber transfer rate can be improved, the generation of fiber knots can be reduced, and the quality of a fiber net layer can be improved.
The novel doffer card clothing with the stepped tooth backs can be used for carding natural fibers and chemical fibers.
Example 2
The difference between this embodiment and embodiment 1 is that the length b1 of the first constituent wire in this embodiment is 0.05mm, and the first protrusion height h3 is 0.2 mm. The total height of the doffer card clothing is 3mm, the tooth depth of the card clothing is 2mm, the height of the base is 0.5mm, and the tooth pitch between the first card teeth 2 and the second card teeth 15 is 1.5 mm.
Example 3
This embodiment differs from embodiment 1 in that the second constituent line forms a second tooth back angle with the base, the angle of the second tooth back angle being 30 °. A first tooth back angle is formed between the first tooth back line and the base, and the angle of the first tooth back angle is 25 degrees. The first tooth front line is smoothly connected with the first concave arc line to reduce the phenomenon of fiber net applique, and a working angle is formed between the first tooth front line and the base and is 27 degrees.
Example 4
As shown in fig. 4, the difference between this embodiment and embodiment 1 is that the convex portion in this embodiment is a first convex 5, one end of the first convex 5 is smoothly connected with the first tooth back line 4 through a second concave arc line 7, and the other end is connected with the first concave arc line 3. The length b1 of the first constituent line in this embodiment is 0.38mm and the height h4 of the first constituent line from the tip angle tip is 0.6 mm. The pitch p between the first pin 2 and the second pin 15 is 2.5 mm. The second constituent line 11 forms a second tooth back angle a2 with the base 1, the angle of the second tooth back angle a2 being 40 °. The first tooth flank line 4 forms a first tooth flank angle a1 with the base 1, the angle of said first tooth flank angle a1 being 35 °. The smooth connection of the first tooth front line 12 with the first concave curvature 3 reduces the phenomenon of web intarsia, the first tooth front line 12 forming an operating angle a with the base 1, the operating angle a being 37 °. The remaining technical features are the same as in example 1.
Example 5
As shown in fig. 5, this embodiment is different from embodiment 2 in that the length b1 of the first constituent line in this embodiment is 0.2mm, and the height h4 of the first constituent line from the tip angle top is 1.5 mm.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may modify or change the technical content disclosed above to equivalent embodiments with equivalent changes, but all those skilled in the art do not depart from the technical scope of the present invention, and any simple modifications made to the above embodiments according to the technical essence of the present invention, equivalent changes and modifications still belong to the protection scope of the technical solution of the present invention.