CN1946887B

CN1946887B - Spring mechanism for a flex bow

Info

Publication number: CN1946887B
Application number: CN2005800129986A
Authority: CN
Inventors: E·默德维特奇; R·斯泰纳; W·斯格
Original assignee: Maschinenfabrik Rieter AG
Current assignee: Maschinenfabrik Rieter AG
Priority date: 2004-04-26
Filing date: 2005-04-12
Publication date: 2010-09-29
Anticipated expiration: 2025-04-12
Also published as: CN1946887A; WO2005103350A1; EP1740745B1; EP1740745A1; DE502005007705D1; BRPI0510193A

Abstract

Disclosed is a spring mechanism for a flex bow (7) in a revolving flat card. Said spring mechanism (12) is embodied such that the same can be disposed on a flex bow (7), thereby supporting the elastic zone of the flex bow in at least one radial direction of movement.

Description

The spring assembly that is used for a kind of card bend

Technical field

The present invention relates to a kind of spring assembly, be used for a kind of card bend of revolving flat card.

Background technology

The cover plate position forms main combing district with comber cylinder, has its function: with cotton clump in addition shredding become filament, isolate foul and dust, removes very short fiber, unclamp cotton knot, make the fiber realization parallel.Because cover plate is subjected to the adhesion of foul and fiber, so be necessary it is cleared up.Therefore developed such revolving flats, this cover plate utilizes a chain or belt and is held togather, and is combined into the band of the circular flow of an endless.Its part directly stands facing each other and is used in the card clothing of comber cylinder, and remainder then continues to be transported to through rotaring forward roller in the position, back, can be cleared up, and is polished in case of necessity.

When the card clothing of comber cylinder and cover plate were arranged each other with standing facing each other, the cover plate slippage and was on the pressing plate of arc in the operating position, and these pressing plates also are adjustment bend, flexible bend, card bend or arc balladeur train.These card bends are roughly relative with comber cylinder with one heart, there is a card bend on the every limit of comber cylinder, they are fixed on the limit part or comber cylinder backplate of carding machine, and are so fixing, make they can be easily and safely re-adjustments in addition.Because along with the wearing and tearing of card clothing with old, the combing gap will change to some extent, so also re-adjustments in addition of card bend.

For the adjusting of cover plate, As time goes on developed different cover plate regulating systems.The oldest a kind of regulating system is a kind of bikini regulating system, shows as Johannsen that " introduced in the cotton spinning handbook (second volume, the 50th page is risen, and publishes in 1963), in this, bend by stent support on three points.By this tuning comber cylinder mid point or leave the adjusting of comber cylinder mid point, just can change its radius.But this point requires following condition: the bend termination must move on on the strong point.In order to reach this purpose, bend has notch on this strong point, and adjusting device can be passed through this notch; If transfer this bend narrower, then radius reduces, and the reach of bend end is fixed this position at last.Above-mentioned principle further develops becomes the five-point type adjusting, therefore, at first is that the weight of cover plate can be distributed on these strong points better, thereby can prevents the bending of bend.This regulating system is to carry out work with a fixing peak, and this peak is only according to the radial direction change, but can not be offset towards the side.End points and intermediate point can be to moving down in both direction.An example is to have introduced a kind of newer five-point type control method in EP787841.

In (on direct operating position) between the card clothing of the card clothing of cover plate and comber cylinder, form a very narrow gap, be referred to as the combing gap.Being adjusted on the revolving flat card for cotton spinning of combing gap, to cotton in 0.10mm～0.30mm scope, to chemical fibre then in 0.1mm～0.40mm scope.Therefore, the precision of revolving flats parts particularly as the precision of the card bend of such parts and the setting respect to one another of these parts all tool have very important significance.Certainly, have necessary in the different initial adjustment of in the scope of 3mm, setting card bend according to selected card clothing type.

The condition of the bandwidth requirement of regulating is: the elasticity of card bend allows this strain, but can not reach plastic range.For this purpose, card bend all forms with a kind of specific alloy casting usually, and this alloy has necessary elasticity, and can obtain necessary shape.But, elastic range and maximum distortion associated therewith always are not enough to be applicable to desirable adjusting bandwidth.This effect also can be more serious under the situation of a less for example comber cylinder diameter below the 1m, and this is that effective deformation is bigger because under an identical adjusting situation of change.In order to obtain a kind of adjusting device of the best, favourable way is: card bend is can be free movable in its end, both can be according to the activity of radiai adjustment direction, and also can be according to the tangential direction activity.Possible fixed form can prevent or limit the activity according to tangential direction.Utilize the contact-making surface of adjusting device by the end at card bend, any fixed form of card bend not just can not limit the radiai adjustment bandwidth of maximum.Say that in principle two radiai adjustment directions meet the requirements: in order to enlarge the combing gap, according to radially leaving mid point; In order to dwindle the combing gap, then comply with radially towards mid point.

From adjusting device, these adjusting devices only still have contact-making surface on the outer end of card bend, so these adjusting devices still might be touched, perhaps leave mid point and go to realize a kind of radiai adjustment.The stroke that returns mid point is that the elasticity by card bend is achieved.

Card bend must be made with the radius of minimum, and only enlarges radius in use.Like this, adjustable range just has been limited.Extend beyond under the situation that stretches boundary at card bend, plastic deformation may take place in the bend of carding machine, and can not be returned to its reset condition again.

Therefore, task of the present invention provides the sort of device that civilian head addresses, so as to overcoming those mentioned shortcomings.

Summary of the invention

According to the present invention, for solving above-mentioned task a kind of spring assembly is proposed, the card bend that is used for a kind of revolving flat card, it is characterized in that spring assembly is so design, makes it can be placed on the bend of carding machine, therefore and support the bending of card bend in its elastic range, so that reduce the radius of card bend, wherein the point of adjustment on the outer end of card bend is furnished with governor motion, and elastic force is applied on the point of adjustment with the form of pointwise.By the spring assembly that the present invention proposes, the elasticity of card bend can be supported.The elastic force of this device so arranged, make at least one radially in, the bend of the elastic range of card bend is supported.Like this, just can reach a bigger accommodation zone width, preferably card bend radially in, this accommodation zone width was originally just covered by the elastic range of card bend.According to the example that proposes previously, former before this according to the direction of mid point location according to spring assembly of the present invention.A kind of card bend of being furnished with spring assembly is thus arranged, makes no longer must be made by least radius, is made but also can regulate by a kind of average card bend.In order to realize leaving the adjusting of mid point, the contact-making surface of adjusting device presses off card bend, and this is that the spring assembly of card bend is born this function because will realize dwindling of radius.

With reference to embodiment the present invention is elaborated below.

Description of drawings

Fig. 1 carding machine schematic diagram;

The spring assembly example that Fig. 2 the present invention proposes;

The another kind of spring assembly layout drawing that Fig. 3 the present invention proposes;

The another kind of spring assembly layout drawing that Fig. 4 the present invention proposes;

The specific embodiment

Fig. 1 represents a kind of revolving flat card, Rieter formula carding machine C60 for example, and its working width is 1.5 meters, its comber cylinder diameter is 1 meter.Bulk fibre will be sent different scutching cotton treatment steps by the transfer passage (not shown), be sent at last in the purification path 9 of carding machine.Replace purifying path, the also vertical feeding hopper of configurable a kind of routine.This vertical feeding hopper is sent to carding machine with bulk fibre as cotton-wool.Feedway is given licker-in 3 with bulk fibre.Licker-in 3 is opened bulk fibre suede, and removes a part of foul particulate.Last licker-in is delivered to combing cylinder 1 with fibre delivery.This combing cylinder 1 is worked with cover plate 6, and still continues to make fibre parallelization in this.Cover plate is purified through a cover plate purifier 8, utilizes a sanding apparatus to be refaced in case of necessity.When a fiber part experiences repeatedly circulation on the combing cylinder after, just collected from the combing cylinder by doffer's roller 4, and it is sent to collects the withdrawal roller of district in 5, be placed on (not shown) in the can coiler in the bar tube as the comb and parallel cotton fibers prior to spinning strip at last.

Each cover plate all belongs to the system of a revolving flats 2, and in this, cover plate 6 utilizes an endless belt without a head or a chain, by a transmission device, continues to advance through the comber cylinder surface, and the direction of rotation of reverse at least comber cylinder is advanced.Cover plate all has the cover plate termination on its end, these terminations directly or indirectly slippage to card bend 7.All is furnished with a card clothing on the base of cover plate, the flexible card clothing of for example being furnished with the serration type card clothing or having little card wire form.

Comber cylinder also has a card clothing, promptly so-called serration type card clothing.The revolving flats assembly is made up of about 70～120 cover plates, and wherein only some is on the operating position.Be in the layout that cover plate number on the operating position also depends on the diameter and the revolving flats of comber cylinder.On average there are 20 to 46 cover plates to be in the operating position.Between the card clothing of the card clothing of comber cylinder and cover plate, a gap is arranged, be referred to as the combing gap.This combing gap is set up with a spacing that remains unchanged on the whole contact zone between cover plate and the comber cylinder.But, this gap also can open ground (the combing gap is constantly transferred big) or closed ground (constantly turn down in the combing gap) regulate.In order to control this adjusting, can arrange some notches in card bend one side, utilize gauge to measure to the spacing between cover plate zone and the comber cylinder zone.

Fig. 2 represents a kind of first embodiment that is used for the spring assembly of card bend 7 that the present invention proposes.The bend of carding machine heart place therein is useful on the mechanism 11 that regulates, and these mechanisms all are fixed on this bend.Like this, the bend of carding machine just can radially be set up according to two on this position, but point of adjustment can not be displaced sideways.10 of point of adjustment on the outer end of card bend are furnished with such governor motion, and these governor motions have the contact-making surface that is used for card bend.Like this, these governor motions can only be by regulating card bend according to the mid point that radially upwards pushes, leaves radius.Can not want spring assembly by the adjusting that a small radii is carried out, only realize that its condition is by elasticity in a limited adjustable range: card bend is originally by the desired radius of minimum to be made.

According to the present invention, below card bend, so settle a spring assembly with leaf spring 12 forms, make elastic force can impel card bend to comply with radially towards middle point deformation.Its advantage is: this spring assembly can help to realize the radiai adjustment along the mid point direction, perhaps bears the adjusting of card bend fully.For example, if card bend is made with an average adjusting radius, spring then can so be designed so, makes its elastic force accord with minimum desired radius.In order to realize leaving moving radially of mid point,

governor motion

10 and 11 carries out work, and in this, the governor motion on the outer end of card bend only applies a pressure motion.In order to finish stroke, or mainly be the elasticity position work of card bend, and/or be spring assembly 12 work to mid point.In this embodiment, the elastic force of leaf spring at first be pointwise directly act on the end of card bend, and preferably determine above the contact-making surface of governor motion 10.Advantageously leaf spring so is bearing on the mid point, makes it can not comply with and radially carry out and governor motion 11 irrelevant moving according to tangential direction.Fig. 3 represent one can with example of comparing shown in Figure 2, in this, card bend and governor motion all can with shown in Figure 2 comparing.Each spring 13 is common to form such spring assembly, and this spring assembly also is that the elastic force with a kind of pointwise is applied on the point of adjustment 10 of outside.When carrying out a kind of radiai adjustment according to the direction of mid point, each spring is driving card bend.

Fig. 4 also represents card bend 7 and

governor motion

10,11 as shown in Figure 2.But, spring assembly is thus arranged now, makes the elastic force that can not produce a kind of pointwise distribute, but elastic force is distributed on the circumference of card bend according to tangential direction as uniform load with being evenly distributed.This point for example can realize by following measure: second kind of material 14 is placed on the side of card bend 7, to be used for supporting desirable elasticity radially.Also see shown in the cross section among Fig. 4 a.

By a kind of spring assembly that adopts the present invention to propose, can also select to be used for the material of card bend in addition.No longer be elasticity and be that a kind of deformability is just enough.The support at the whole elasticity position that is lacked can utilize a spring assembly radially to be remedied according to desirable.

Claims

1. spring assembly, the card bend that is used for a kind of revolving flat card, it is characterized in that, spring assembly is so design, make it can be placed on the bend of carding machine, and therefore this spring assembly is supported the bending of card bend in its elastic range, so that reduce the radius of card bend, wherein the point of adjustment on the outer end of card bend is furnished with governor motion, and spring force is applied on the point of adjustment with the form of pointwise.

2. by the described spring assembly of claim 1, it is characterized in that the elastic force that is inserted in the card bend by spring assembly is applied by reverse direction in governor motion.

3. the card bend that is used for revolving flat card, it is characterized in that, settled to meet the described spring assembly of one of above claim on card bend, wherein spring assembly is supported the bending of card bend in its elastic range, so that reduce the radius of card bend.

4. by the described card bend of claim 3, it is characterized in that the point of adjustment on the outer end of card bend is furnished with governor motion, and spring force is applied on the point of adjustment with the form of pointwise.

5. by the described card bend of claim 3, it is characterized in that spring assembly applies a kind of uniform load on the tangential direction of card bend.

6. by claim 3 or 4 described card bends, it is characterized in that spring assembly comprises leaf spring.

7. by the described card bend of claim 6, it is characterized in that leaf spring is applied to power on the outer point of adjustment.

8. by the described card bend of claim 5 (7), it is characterized in that settle second kind of material (14) on the side of card bend (7), this material is along desirable radial support elasticity.

9. the carding machine of being furnished with card bend (7), it is characterized in that, with a kind of spring assembly (12,13) be placed on the card bend (7), and therefore this spring assembly (12,13) is supported the bending of card bend (7) in its elastic range, so that reduce the radius of card bend (7), wherein the point of adjustment on the outer end of card bend is furnished with governor motion, and spring force is applied on the point of adjustment with the form of pointwise.