CN87208873U - Bag type unit width expansion roller - Google Patents

Abstract

The utility model relates to a width expansion device in printing industries. In the prior printing industries, the width expansion device of a mercerizing device mostly adopts a cloth gripper. In virtue of the intrinsic defects of the cloth gripper, the phenomena such as opening rags clamped, scalloped selvedge, etc. often occur. The utility model provides a bag type unit width expansion device adopting a method that a rigid pressing wheel disc, a flexible rubber block and an air bag are engaged with each other to form convex and concave nip points for conducting the width expansion processing of the fabrics. The utility model has the advantages of reliable width expansion function, even applied force and improved width effects and service life.

Description

Bag type unit width expansion roller

The utility model relates to a kind of improvement of dyeing expanding device.

In dyeing, in order to guarantee the quality of textiles, in working procedures, as mercerising, needing when dyeing and arrangement that textiles is carried out expanding handles, particularly fabric must be at lixiviating under the tension force after padding concentrated base in mercerization, only the concentrated base that pads on fabric under tension force is cleaned to a certain degree, just can make fabric obtain sufficient gloss and stable washing shrinkage, we can say that expanding equipment is the key equipment of decision fabric mercerising quality, for many years, dyeing uses cloth gripper expanding device always, though this expanding device can guarantee the broadwise washing shrinkage of fabric, but the selvedge of breaking by the teeth often appears, taking off pincers causes selvedge uneven, form disadvantages such as flounce, in addition through the fabric limit portion and the irregular defective that can't overcome especially of middle part warp count of its expanding.A kind of new technology that is referred to as little tentering (Micro-stretching) appears abroad in middle nineteen sixties, and this technology is that fabric is divided into several small zones on weft direction, by the method for machinery, each zone is applied uniform pulling force.Usually the practice that adopts be the cylindrical of a pair roller vertically car make equidistant corrugated convex-concave surface, the male and female face correspondence interlock of two rolls is just formed the ripple wire rolls a little, when fabric during, promptly produce the expanding effect by such roll.But in fact because the selvedge of fabric can not be fixed, and the selvedge at two ends bounced back rapidly when fabric was stretched, consequently do not reach and give the phase effect, make this technology can not in industrial production, use so far.

The capsule formula unit spreading roll that the utility model proposes designs according to little tentering principle, utilize the rigidity of two spreading rolls part and flexible pressure-bearing being in contact with one another partly of exerting pressure, form the wavy lines of occlusion of convex-concave, have the limit problem that contracts in little stentering thereby solved.

Fig. 1 is the axial half sectional view of the capsule formula unit spreading roll that the utility model proposes, and Fig. 2 is the radial cross-section of spreading roll.

By reference to the accompanying drawings structure of the present utility model is narrated, the outer round surface of the spreading roll that the utility model proposes is exerted pressure partly by rigidity and flexible pressure-bearing partly forms, the part of exerting pressure is several wheel discs 12 of exerting pressure, these wheel disc strings of exerting pressure are contained on the roll body 9 of spreading roll, the wheel disc of exerting pressure is by key 10 and roll body combination, and the wheel disc periphery of exerting pressure becomes stepped, has several holes on the side of the wheel disc of exerting pressure, the hole of the wheel disc of exerting pressure that string is fitted together connects the pore chamber 14 of constituent apparatus air bag mutually. The pressure-bearing part of spreading roll is made up of pressure-bearing blob of viscose 11 and 13 two ones in air bag, the pressure-bearing blob of viscose is contained on the shallow bid of the wheel disc of exerting pressure, air bag is contained in the pneumatopyle of the wheel disc of exerting pressure, the pressure-bearing blob of viscose is preferably made the T font, both upper ends thereof is contained in respectively the top of adjacent two air bags, and the bottom of T font pressure-bearing blob of viscose is inserted in the space between those two air bags, comes off in order to prevent the pressure-bearing blob of viscose, T font pressure-bearing blob of viscose bottom is preferably made up-small and down-big shape, so that it can be stuck between the air bag. Positioning baffle 6 is equipped with at the two ends that string is contained in the wheel disc of exerting pressure on the roll body, have pore 8 on the positioning baffle, have air admission hole 2 on the axis 1 of spreading roll, pressure-air can enter sub-air chamber 7 by pore 2, enter in the air bag 13 by the pore 8 on the positioning baffle again, air bag one end that is contained in the air bag pore chamber seals, the toroidal that the other end is made back edge be fixed on positioning baffle pore 8 around, each bonding part of gas separating port all imposes sealing with O-ring seal or rubber cushion. When spreading roll is worked, pressure-air enters sub-air chamber through the air admission hole on the axle, enter in the air bag by the pore on the baffle plate then, when two diverticulum formula unit width expansion roller phase interlocks, the wheel disc of exerting pressure is depressed the pressure-bearing blob of viscose of correspondence respectively, because the air bag compressive deformation of pressure-bearing blob of viscose bottom makes smooth roll surface be pressed into concave-convex, fabric is during by rolling between such two spreading rolls, will produce along with the distortion of roll surface little expanding effect, the degree of expanding can change by the distance of adjusting between spreading roll. Exert pressure wheel disc and the pressure-bearing blob of viscose of mutually pressing leave roll a little disengage after, then the pressure-bearing blob of viscose returns to rapidly original position by the pressure of air bag, makes roll surface become flat condition.

The capsule formula unit spreading roll expanding reliable effect that the utility model proposes, uniform force application can not produce phenomenons such as flounce and warp count be irregular.Because the pressure-bearing blob of viscose is with the big air bag support of strain, not only can guarantee enough big pressing intensity but also can not damage blob of viscose or blob of viscose is extruded.Compare with existing little expanding equipment, obvious improvement was all arranged aspect expanding effect and service life, the cost of equipment is lower than cloth gripper device, and is easy to maintenance.

3 is gas separating port lids in the accompanying drawing 1, the 4th, and gas separating port, the 5th, pressure pad, the 10th, key, the 15th, drift.

Embodiment:

The spreading roll of manufacturing according to characteristics described in the utility model, roll body fixedly becomes one with three lobe mouth drifts and axle, the wheel disc of exerting pressure fixes with roll body with key, the spreading roll external diameter is φ 260mm, the long 1770mm of roller, effective active length 1600mm, the side of the wheel disc of exerting pressure has the holes of 8 device air bags, and it is neoprene that air bag and pressure-bearing blob of viscose are made wadding.

Claims (3)

1, a kind of outer surface is by the spreading roll of exerting pressure partly and pressure-bearing is partly formed; The part of exerting pressure that it is characterized in that this spreading roll is made up of the wheel disc of exerting pressure that several strings are contained on the roll body, and the wheel disc periphery of exerting pressure becomes stepped, has several holes on the wheel disc of exerting pressure, and the pressure-bearing part of spreading roll is made up of pressure-bearing blob of viscose and air bag two parts.

2, spreading roll as claimed in claim 1 is characterized in that said blob of viscose is the T font, and the two ends on this blob of viscose top are contained in the top of two adjacent air bags respectively, and the bottom of this blob of viscose is inserted in the centre of above-mentioned two air bags.

3, as claim 1,2 described spreading rolls, it is characterized in that the sealing of said air bag one end, the horn mouth shape that the other end is made back edge is fixed on the positioning baffle of wheel disc one end of exerting pressure of string dress.

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