CN2218756Y

CN2218756Y - Doffer rack for textile

Info

Publication number: CN2218756Y
Application number: CN 95242606
Authority: CN
Inventors: 林吉曙
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-06
Filing date: 1995-01-06
Publication date: 1996-01-31
Anticipated expiration: 2005-01-06

Abstract

The utility model relates to a doffer rack for textile machinery. The utility model is composed of a base part and a toothed edge, wherein, the base part is provided with edges, and the toothed edge is arranged at the upper part of the base part. The toothed edge refers to the tooth shape of the front part of rectilinear teeth with negative angles and the tooth shape of the back part of convex back teeth with double refracted lines. A working angle in front of the teeth ranges from 50 DEG to 60 DEG, which means that a front angle ranges from 30 DEG to 40 DEG. A back sharp angle at the back side of the teeth ranges from 23 DEG to 35 DEG, and a tooth back angle ranges from 30 DEG to 40 DEG.

Description

The wires of doffs of weaving usefulness

Though the utility model relates to particularly suitable but be not, also be doffer's metallic card clothing only for the wires of doffs that is used for bast fibre spinning machinery.

Wires of doffs is a kind of important carding element in the textile machine, speaks approvingly of husband's metallic card clothing again.Especially in ramie textile industry, because ramie fiber long staple, tension force is big, characteristics such as fiber crops cake degree of opening is poor, and little bundle fiber is many, tooth bar commonly used at present is because of the reason of profile of tooth, the anti-scarce capacity of running over and injure of tooth bar, be unfavorable for cushioning the air-flow that cylinder produces, cooperate badly with the geometric parameter of working roll tooth bar, also be unfavorable for solving and shift and divide the contradiction of combing.Once disclosing a kind of profile of tooth in Chinese patent 91204218.4 is the wires of doffs of the protruding back of the body tooth pattern of straight line flank of tooth two-fold ray, though certain improvement effect is arranged, still has satisfactory not to the utmost part.

The purpose of this utility model is to provide profile of tooth more reasonable at the problems referred to above, and by the wires of doffs that experimental results show that better effects if, also has the advantage that cooperates wide ranges simultaneously.Though it can be preferentially and particularly suitable, is not only for being used for ramie textile industry.

Wires of doffs of the present utility model is made of base portion that has seamed edge and the tooth portion on it, and its profile of tooth is straight line negative angle front flank and the protruding back of the body rear flank of two-fold ray form.The straightway of its front flank is 50 °～60 (being that anterior angle is 30 °～40 °) with the operating angle that baseline became of base portion, wherein with 55 ° (they being that anterior angle is 35 °) for well; The crown portion straightway of rear flank is 23 °～35 ° with the back of the body wedge angle that baseline became of base portion, wherein with 26 °～30 ° for well; Becoming the Clearance angle that is become between the baseline of the consecutive straightway of broken line and base portion with this crown portion straightway is 30 °～40 °, wherein with 35 ° for well.The combing that is to adapt to the ramie textile fiber better with shift requirement, the tooth pitch of tooth bar and base portion thickness than in 1.818～3.571 scopes for good.As in order to be used better with short flute profile cylinder tooth bar, the height overall of tooth bar and tooth depth than with in 1.857～2.158 scopes for good.In the time of particularly in the inside pitch line length that belongs to invalid combing district is controlled at 0.2～0.4 millimeter scope, both more help cushioning and comb and lead the air-flow that cylinder produces, can reduce filling of fiber again.Adopt the geometric parameter of this tooth bar and cooperating of profile of tooth, can significantly improve the anti-ability of running over and injure of tooth bar.

Use the experiment of said structure wires of doffs to show in ramie is knitted, the anti-ability of running over and injure of the crown of tooth bar is strong, is difficult for lodging, fiber is difficult for filling, and crown is sharp, and card grinding or use back tooth top area Magnification are less, anti-passivation ability is stronger, and card stripping cycle and service life improve significantly.

Use the carding effect ideal of this tooth bar to ramee, numb net quality is good, the definition height, and fiber crops grain rate reduces by 30%, and runner doubling rate reduces by 38%, and the short fiber rate reduces about 4.8%, and row yielding also slightly improves.On the other hand, this wires of doffs remove can with special-purpose assorted ZC-11, outside tooth bar such as cylinder such as ZC-12 grade is used, also can wait other cylinder tooth bar to be used with ZC-775, KC-2 and XZC-01, effect is also fine, can cooperate applicable scope wide with it.

Below with shown in the accompanying drawing but be not to be that the example that the above-mentioned subject area of the utility model is made restriction is described further.

The structure of Fig. 1 the utility model wires of doffs

As shown in the figure, this wires of doffs is made of base portion 1 that has seamed edge and the tooth portion on it, and its profile of tooth is straight line negative angle front flank and the protruding back of the body rear flank of two-fold ray form.The straightway 2 of front flank and the operating angle α that baseline became of base portion 1 are that back of the body wedge angle β that the crown portion straightway 3 of 55 ° of (also being that anterior angle is 35 °) rear flanks is become with the base portion baseline is 26 ° or 30 ° and all can; The Clearance angle γ that becomes the consecutive straightway 4 of broken line to be become with the base portion baseline with this straightway is 35 °.The height overall of tooth bar is 1.857～2.158 with the ratio of tooth depth; Tooth pitch is 1.818～3.571 with the ratio of tooth bar base portion thickness; Inside pitch line length is 0.2～0.4 millimeter.

Claims

1, the wires of doffs of weaving usefulness, constitute by base portion that has seamed edge and the tooth portion on it, profile of tooth is straight line negative angle front flank and the protruding back of the body rear flank of two-fold ray form, it is characterized in that front flank straightway (2) is 50 °～60 ° with the operating angle that baseline became of base portion (1), the back of the body wedge angle that is become between the crown portion straightway (3) of rear flank and the baseline of base portion (1) is 23 °～35 °, and becoming the Clearance angle that is become between the baseline of the consecutive straightway of broken line (4) and base portion (1) with crown portion straightway (3) is 30 °～40 °.

2, wires of doffs as claimed in claim 1 is characterized in that said operating angle is 55 °.

3, wires of doffs as claimed in claim 1 is characterized in that said back of the body wedge angle is 26 °.

4, wires of doffs as claimed in claim 1 is characterized in that said back of the body wedge angle is 30 °.

5, wires of doffs as claimed in claim 1 is characterized in that said Clearance angle is 35 °.

6,, it is characterized in that the said tooth bar height overall and the ratio of tooth depth are 1.857～2.158 as the described wires of doffs of one of claim 1 to 5.

7,, it is characterized in that the ratio of said tooth pitch and tooth bar base portion (1) thickness is 1.818～3.571 as the described wires of doffs of one of claim 1 to 5.

8,, it is characterized in that said inside pitch line length is 0.2～0.4 millimeter as the described wires of doffs of one of claim 1 to 5.