CN1004815B - Composite shuttle for cotton machine - Google Patents

Abstract

The present invention relates to a composite damping elastic shuttle for cotton knitting machine, which is a component for cotton knitting machines. In order to reduce the noise of textile machinery, prolong the service life of leather pickers and reduce the weft broken rate, the shuttle tip of the shuttle of the present invention adopts damping material as a basal body, and the surface is coated with knitting fabric resin with high modulus, high strength and superior autohesion. A shuttle body is in a five-layer composite damping elastic structure, and a damping retainer ring for a yarn cop is arranged in the cavity of the shuttle. The present invention which uses the reasonable mechanical structure and acoustic principle ensures greater loss factors under the condition of certain intensity and rigidity for the shuttle body, can attenuate the impact peak value, can effectively reduce the noise, and can reduce the weft broken rate and the annual material consumption of knitting machines.

Description

The compound shuttle of cotton knitting machine

The invention belongs to field of textile machinery, is the easily worn part on the cotton knitting machine.

Shuttle on the cotton knitting machine, domestic widely-used wooden shuttle of past or compressed wood shuttle, quantity accounts for about 95%, annual about 10 ten thousand steres of all kinds of high-quality timber of employing that need, the manufacturing procedure complexity, and shuttle body intensity is low, and the life-span is short, and noise is serious.Early eighties is domestic brings into use overall plastic shuttle and the compound shuttle of moulding, though its intensity and life-span than timber Senior Two to three times, noise is serious, overall plastic shuttle also exists viscosity, static, is difficult to the reparation situation.

The external compound shuttle of moulding, the single shuttle base of employing and the many shuttles base in the processing of being extensive use of.The thermosetting plastics shuttle that U.S. 1972 patent (patent No. is 3660219) strengthens for single shuttle base fabric.Shuttle structure is seen Fig. 1 and Fig. 2, and spur 3 adopts ferrous material, is made up of five layer materials the shuttle body that shuttle head 2 and shuttle wall 1 constitute.Inside and outside superficial layer 4 adopts the cotton of resin impregnating, wooden of low-density is adopted in intermediate layer 5, and the glass fibre of resin impregnation is adopted on nearly top layer 6, and this five layer material can be once hot-forming, bonding again after also but layering presses, under 150 ℃～160 ℃ temperature, be incubated one hour during hot pressing.Many shuttles of rectangle base is seen U.S.'s patent (patent No. 3693670) in 1972.Many parts material of a plurality of plastics shuttles is made the blank of different piece, show as Fig. 3, many shuttles of rectangle base is made up of two base heads 7 and two base walls 8, base head and base wall form many shuttles of the rectangle base with base chamber after the hot pressing in mould, cut into several single shuttle bases by the line of cut among Fig. 39, and then being processed into shuttle, the base wall of many shuttles of rectangle base is also formed laminar structure by five layer materials.Inside and outside superficial layer adopts thermoset synthetic resin dipping cotton, solidifies under hot pressing.The intermediate layer is a layer of wood, and other is two-layer to be the glass fabric layer, solidifies under hot pressing.After five layer materials are made, stick together securely.The base head is the polyvinyl that american chemical industrial group makes.

The characteristics of above-mentioned two kinds of shuttles are (reducing 10%) in light weight, and the life-span is long, can be used for having certain rigid, ABRASION RESISTANCE and intensity at a high speed, have solved to mould the problem of Dai Mu.Adopt layer of wood that certain noise reduction effect is arranged in the shuttle owing to mould.But because the above-mentioned spur of moulding shuttle adopts ferrous material, the noise that clashes between shuttle and the leather block is still very big.When considering the reasonable structure of shuttle itself, do not take into account the life problems of leather block.

According to prior art, the object of the invention is to reduce noise, increases the life-span of shuttle and leather block.Its advantage is:

1. appropriateness prolongs the duration of shuttle and leather block transient impact, reduces the moment impact peak value, reduces the impact acceleration noise thus.

2. increase the life-span of leather block, reduce the impact noise of shuttle one leather block greatly.

3. solve wear-resisting, the anti-impact and the noise problem of spur part.

4. guaranteeing that the shuttle wall has under certain rigidity prerequisite, the radiation noise of ring certainly after control is impacted effectively.

5. solve generally mould the Electrostatic Absorption of shuttle and be clamminess, inconvenient reparation problem, stationary performance when increasing life-span of iron core and drawn work reduces the staplings rate.

Shuttle of the present invention is made of spur, shuttle head and shuttle wall.

It is that matrix surface is coated with high-modulus (10 that spur adopts with the damping material ¹⁰N/m ²), high strength, the resin-coated structure of braided fiber that tack is superior.

Shuttle head and shuttle wall adopt five layers of composite damping elastic construction, and interior surface layers and outer surface layer adopt the synthetic fiber braided fabric coating of resin impregnating; Damping layer adopts damping material; The centre be rigid layer without glass fibre, and adopt tack nylon or nylon-6 fiber preferably.

The present invention has adopted rational mechanical structure and Principles of Acoustics, solved remain in Dai Mu and the plastics shuttle problem.

Among the present invention, spur part stress distribution is even, the impact strength height, and the dividing sinker resistance is little, can increase considerably the leather block life-span; Shuttle wall part good rigidly, smooth surface, coefficient of friction is little, the no Electrostatic Absorption and the phenomenon that is clamminess, anti-trapped shuttle and the impact when receiving latitude; Overall structure has the bigger energy loss factor and the elasticity of impact site, and therefore attenuate shock power peak value significantly increases the shuttle life-span (with respect to wooden shuttle more than 3 times), reduces shuttle and more than the leather block impact noise 3dB; Shuttle weight is identical with wooden shuttle, and the power of throwing a spear during operation reduces, thereby can reduce power consumption more than 7%.

The present invention adopts spool damping back-up ring, can increase the lockmaking power of spool, reduces the shake of spool because of producing with iron core gap, stability when guaranteeing drawn work, reduce the staplings rate, and easily adopt identical shuttle mould and technological process, save manufacturing cost according to different spool models.

Technology of the present invention is simple, can be by the sulfuration thermoset forming behind coating immersion liquid and extruded sheet.Process is identical with rubber-resin technology.

After adopting the present invention, can obtain and reduce noise, using electricity wisely, reduction loom parts year consumption, easily benefit such as economy and society such as reparations grade can be applicable to more than 1511M(220 rev/min), more than the 1515M(200 rev/min) etc. all kinds of cottons, the chemical ﹠ blended fabric of automatic shuttle changing formula loom and middle and high yarn.

Fig. 1 is U.S. thermosetting plastics shuttle structure figure

Fig. 2 is Figure 1A-A cross-sectional view

Fig. 3 is the U.S. many shuttles of rectangle blank structure figure

Fig. 4 and Fig. 5 are shuttle structure figure of the present invention

Fig. 6 is Fig. 4 B-B cross-sectional view

Fig. 7 is Fig. 5 C-C cross-sectional view

Embodiments of the invention are described in further detail below

1, spur 10 is made up of three parts

Superficial layer 14 adopts the resin-coated structure of braided fiber of high-modulus, high strength, self-adhesion superior performance, can select one of following material for use:

(1) multilayer carbon fibre nonwoven fabric impregnated phenolic resin;

(2) polymetaxylene adipamide fibre woven cloth impregnated phenolic resin.

Above-mentioned coating impregnation technology all need be carried out the immersion liquid of different fabrics and be handled hot-press solidifying in the shuttle sulfidation.

Intermediate layer 15 is the elastic bearing layers as superficial layer, employing and above-mentioned surfacing and shuttle body matrix material intermiscibility and adhesive performance be structural system preferably, select polymetaxylene adipamide fibre for use, adopt the butyronitrile 26 rubber liquid coating layers of sulfur sulfide system.

The main prescription of butyronitrile 26 rubber glues is:

Butyronitrile 26 rubber 100; White carbon 40

Softening agent 1; Magnesia 5

Natural rubber 10; Zinc oxide 5

Phenolic resins 30; Antiscorching agent 0.5

Sulfur 1.5; Age resistor 1

Need the mold pressing under 50 ℃～60 ℃ temperature to be shaped into taper after the above-mentioned glue coating, enter shuttle sulfuration die cavities then and carry out the sulfuration second time.

Base layer 16 adopts damping material, and this damping material has following characteristic:

(1) higher damping capacity is arranged, the glassy state temperature is about-10 ℃, and fissipation factor is about 0.7-0.8.

(2) higher shock strength, tearing strength, tensile strength are arranged.

(3) heat resistance and thermal stability are arranged.

(4) residual deformation is little, after impacting certain resilience is arranged.

The damping material that meets above-mentioned characteristic has mainly been filled a prescription following two kinds

(1) butyronitrile 26 rubber 100; Light filler 10

Phenolic resins 30; Softening agent 1

White carbon 40; Age resistor 1

Sulfur 1.5;

Zinc oxide 5;

(2) chlorinated butyl rubber 100; Sulfur 2

Brominated phenolic resin 30; Age resistor 1

White carbon 20; Light filler 10

Zinc oxide 5; Altax 1

Altax 2

2, the shuttle body is made of shuttle head 11 and shuttle wall 12, adopts five-layer structure on the structure.

Outer surface layer 17 adopts multilayer polymetaxylene adipamide fibre woven cloth dipping thermoset phenolic resin, and thickness is 1.5mm behind the hot-press solidifying.

Damping layer 18,20 adopts and spur 10 base layer identical materials.

Rigid layer 19 adopts the nylon-6 fiber cloth impregnated phenolic resin after the tackify glue-line is handled, and is that 240 * 38 * 28 rectangle ring (intersecting overlapping at spur two head ends) cured thickness is 0.5mm with the gummed cloth growths * wide * height of finalizing the design at low temperatures.

Interior surface layers 21 adopts and the extexine identical materials, and cured thickness is 1mm.

Claims (24)

1, the compound shuttle of cotton knitting machine, it is to constitute by spur 10 and by the shuttle head 11 and the shuttle wall 12 that adopt five layers of composite construction, it is characterized in that spur 10 comprises the base layer 16 that adopts damping material and adopts resin-coated superficial layer 14 and the intermediate layer 15 of braided fiber, five layers of composite construction that shuttle head 11 and shuttle wall 12 are adopted are: inside and outside superficial layer adopts multilayer polymetaxylene adipamide fibre woven cloth dipping thermoset phenolic resin, rigid layer adopts the nylon-6 fiber cloth impregnated phenolic resin after the tackify glue-line is handled, and damping layer adopts damping material.

2,, it is characterized in that one of following material of superficial layer 14 optional usefulness of spur 10 by the described shuttle of claim 1

(1) multilayer carbon fibre nonwoven fabric impregnated phenolic resin;

(2) polymetaxylene adipamide fibre woven cloth impregnated phenolic resin.

3,, it is characterized in that the coating layer of polymetaxylene adipamide fibre woven cloth through the butyronitrile 26 rubber glues of sulfur sulfide system selected in the intermediate layer 15 of spur 10 for use by the described shuttle of claim 1.

4, shuttle according to claim 3 is characterized in that the main prescription that is coated with used butyronitrile 26 glues is:

Butyronitrile 26 rubber 100; White carbon 40

Softening agent 1; Magnesia 5

Natural rubber 10; Zinc oxide 5

Phenolic resins 30; Antiscorching agent 0.5

Sulfur 1.5; Age resistor 1

Promoter 0.75;

5, shuttle according to claim 1 is characterized in that the base layer 16 of spur 10 is as follows with the prescription of the damping material that damping layer adopted of shuttle head 11 and shuttle wall 12:

(1) butyronitrile 26 rubber 100; Zinc oxide 5

Phenolic resins 30; Age resistor 1

White carbon 40; Promoter 0.75

Sulfur 1.5; Light filler 10

Softening agent 1;

（2）：

Chlorinated butyl rubber 100; Altax 2

Sulfur 2; Captax 1

Light filler 10; White carbon 40

Age resistor 7; Zinc oxide 5

Brominated phenolic resin 30;

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