RU2010057C1 - Rod for forming fabric relief - Google Patents

Abstract

FIELD: textile engineering. SUBSTANCE: device has a rod fastened in the needle holder of a sewing machine with chutes. A blunting with projections is located in the lower working part of the rod. The device has a stage with an arbitrary cutting. The upper part of the rod transforms into a flask-shaped section which has an end. EFFECT: improved structure. 5 dwg

Description

 The invention relates to rod designs.

 A known design of a needle for sewing machines is a Singer needle, consisting of a rod, including a thinned part that goes to the tip, a bulb that ends with an end face. The eyelet is located at the tip, which serves to thread the thread.

 Its disadvantage is that it can only carry out the function of suturing tissues, without changing its relief.

 A degree design for sewing machines is also known. The needle contains a rod with grooves, including a thinned part, turning into a tip with an eye, a flask ending with an end [1].

 The degree allows you to get the relief of the fabric, but not terry thread.

 The aim of the invention is the expansion of technological capabilities by obtaining terry relief.

 This is achieved by the fact that the structure formed from the needle of the sewing machine, installed and fixed in the needle holder of the sewing machine, consists of a rod with large and small grooves and a bulb ending with an end face, on the lower working part of which there is a blunting in the form located at an angle to the longitudinal axis the core of the site with a roughness corresponding to the 5-6 class of cleanliness, on the surface of which there are two protrusions, the height of one is 0.3-0.7 mm, and less than 0.1-0.4 mm, between which a depression equal to 0.2-0 , 5 mm, moreover, in the adjacent to dulling one tier (row) of arbitrary faces (facets) is formed in the area of the cylindrical surface of the rod, the height of which is equal to 0.5-0.8 mm and a roughness of 7-8 purity class, using rods whose diameter is included in the inter-limit diameter platforms, within 0.6-1.5 mm.

 The novelty of the proposed design is that the structure formed from the needle of the sewing machine, mounted and secured in the needle holder of the sewing machine, mounted and secured in the needle holder of the sewing machine, consists of a rod with large and small grooves and a bulb ending in the end, on the lower working part of which blunting is formed in the form of a platform located at an angle to the longitudinal axis of the rod with a roughness corresponding to a cleanliness class 5-6, on the surface of which there are two protrusions, the height of one is 0.3-0.7 mm, and less about 0.1-0.4 mm, between which a depression equal to 0.2-0.5 mm, and in the part adjacent to the blunting of the region of the cylindrical surface of the rod, one tier (row) of arbitrary faces (cut) is formed, the height of which is equal to within 0.5-0.8 mm and a roughness of 7-8 purity class, while using rods, the diameter of which is included in the inter-limit values of the diameter of the site, in the range of 0.6-1.5 mm.

 These distinguishing features are significant, as in the studied sources of patent technical information signs identical and equivalent were not found.

 In FIG. 1-4 shows the design of the rod; in FIG. 5 (a-d) - types of terry relief.

 In FIG. 4 is a close-up view of a blunted image of a blunted area at an angle to the longitudinal axis of the rod, which merges with a tier of arbitrary cut, located on the lower working part of the rod, the surface of which is rough-grasped, of the proposed design. As can be seen from FIG. 4, an axial section has a trapezoidal shape.

 The type of rough-grasped surface is arbitrary (Anuryev V.I. Types of surface directions, Handbook of a mechanical engineer, vol. 1, ed. 6th, 1982, p. 275, table 2).

 The proposed design consists of a rod 1 with grooves 2, the lower working part of the rod ends with blunting with protrusions 3, there is a tier 4 of arbitrary cut. The upper part of the rod passes into the flask 5, which ends with the end face 6.

 The rods formed from the needles of sewing machines N 60- N 150 are taken as the basis, since the inter-limit values of the diameters of the rods cannot be experimented on only one rod due to their cylindrical shape, as opposed to the conical shape, where the inter-limit values of the diameters of the pads can be experimented with on the same needle limit number sample .

 By mechanical removal on the nodes of the sewing machines N 60-N 150, the needle tip is removed at the eye level so that two protrusions remain (the protrusions from the eye remaining as a result of removal of the needle tip of the sewing machine, the eye height is 1.5 mm), one of which is smaller another on the site, located at an angle to the longitudinal axis of the rod, in the adjacent to the blunting part of the region of the cylindrical surface of the rod, a tier (row) of arbitrary cut with a rough-chain surface is formed. In this case, rods are used, the diameter of which is included in the inter-limit values of the diameter of the site in the range of 0.6-1.5 mm. All of the above parameters are optimal in creating a terry relief with an increased degree of productivity and efficiency by eliminating the fixation of the relief with threads.

 It was experimentally established that the following parameters of the working lower end of the rod are optimal: a blunt pad, located at an angle to the longitudinal axis of the rod, with two protrusions on its surface, a height of one 0.3-0.7 mm, and a smaller one 0.1-0 , 4 mm, a layer of arbitrary cut, the height of which is equal to within 0.5-0.8 mm, the roughness of the working lower part of the rod, corresponding to 5-8 class of cleanliness.

 Using the relationship of geometric values, determine the relationship between the d-diameter of the rod, h-height of an arbitrary cut.

;
a = 2

;
P= na = 2nR sin α₁ = 2nrtg α;
n - число сторон;
α = 180^о-2 α₁ - угол многоугольника;

=

;
h - апофема произвольного огранивания;
М_б - боковая поверхность произвольной огранки;
Р - больший периметр произвольной огранки;
р - меньший периметр;
а - сторона многоугольника, образующая периметр (больший и меньший).M _b = P + p / 2 h; h =

;
a = 2

;
P = na = 2nR sin α ₁ = 2nrtg α;
n is the number of parties;
α = 180 ^about -2 α ₁ - the angle of the polygon;

=

;
h is the apothem of arbitrary restriction;
M _b - the side surface of an arbitrary cut;
P is a larger perimeter of arbitrary cut;
p is the smaller perimeter;
and - the side of the polygon forming the perimeter (larger and smaller).

 The obtained data on the optimal parameters of the working end of the rod and their values are given in table. 1 (used model of the needle of the sewing machine 0277-33, execution of the bar 02).

 Regarding the issue of roughness with a characteristic in numerical data, in accordance with generally accepted standards, Table. 2 (surface roughness classes).

Choosing the values of h and d, as well as L ₁ , you can get a terry relief of a different pattern and pile formation of different lengths from 1.5 mm.

 The rod formed from the needle of the sewing machine and installed in the needle holder, operates as follows.

When pressing (and piercing) the lower working rough-grasped end of the rod on the surface of the cotton fabric to obtain a terry relief is carried out
tension of the fabric threads on the front and back surfaces in all areas in the direction to the puncture site, located from the puncture site and the piercing lines;
the tension of the fabric threads on the cotton material, turning into a collection by tightening (warp and weft), which is maintained and strengthened at the time of puncture and persists after puncture of the fabric;
on the original side of the material, in addition to relief formation in the puncture sites, pile formation is formed, up to 1.5 mm the length of the pile, in combination with ring formation of fabric threads (warp and weft). Pile is not maintained even if you pull on the villi.

 So, under the influence of the lower working end of the rod, on which an arbitrary cut is located, which joins with two protrusions on the blunting, a terry relief is formed on the cotton fabric, double-faced (you can use each of the sides - upper - front and lower - wrong).

 Varieties of the pattern obtained by forming a terry relief on cotton fabric are shown in FIG. 5 (a-d).

 5 (a) is a drawing of a terry relief from the front side, the alternation of straight and wave-like puncture lines on cotton fabric.

 5 (b) is the wrong side of the material, on which a pile up to 1.5 mm long is formed in combination with banding of the fabric threads (warp and weft).

 5 (c) - the front side of the terry relief without pile. The puncture lines are directed parallel to the warp threads (weft is possible).

 5 (g) - pile formation on the wrong side is sparse in comparison with FIG. 5a.

 The resulting terry relief using the proposed design of the rod formed from the needle of the sewing machine can be used in light industry in the manufacture of various garments and in combination with decoration from other materials.

 Thus, the proposed design of the rod allows you to perform two functions when piercing the cotton fabric - create a relief and form a pile in the form of a break of the fabric threads at the puncture sites in combination with thread ringing, which allows you to expand the range of products at minimal cost. (56) 1. U.S. Patent No. 4,353,158, cl. B 21 K 21/16, 1982.

Claims (1)

 A ROD FOR FORMING A RELIEF ON FABRIC, mounted and fastened in the needle holder of a sewing machine, having two grooves and a flask, end-to-end, characterized in that, in order to enhance technological capabilities by obtaining a terry relief, there is a higher degree of view at an angle of the longitudinal axis of the rod of the site with a roughness corresponding to 5 - 6 classes of cleanliness, on the surface of which there are two protrusions, the height of one of which is 0.3 - 0.7, and the other 0.1 - 0.4 mm, and between the protrusions about a hollow of 0.2–0.5 mm is defined, with the part of the surface of the rod adjacent to the blunting having one facet, the height of which is 0.5–0.8 mm, and the roughness corresponds to 7–8 purity classes, and the diameter of the rod is 0.6 - 1.5 mm.

Images