CN101812771B

CN101812771B - Fabricating method for a circle forming bracket

Info

Publication number: CN101812771B
Application number: CN 200910132765
Authority: CN
Inventors: G·舒勒; T·休斯
Original assignee: Karl Mayer Textilmaschinenfabrik GmbH
Current assignee: Karl Mayer Textilmaschinenfabrik GmbH
Priority date: 2009-02-24
Filing date: 2009-04-16
Publication date: 2013-05-29
Anticipated expiration: 2029-04-16
Also published as: CN101812771A; DE102009010316A1; DE102009010316B4

Abstract

This invention relates to a fabricating method for circle forming bracket, where, A circle forming tool (2) is put into the molding die and loaded by composite material. Said invention is aimed at providing a low cost fabricating method, therefore, the composite material (3) should be cooling at a temperature point of no more than 60 centigrade degree from a temperature point of being in a fluid condition.

Description

Make the method for circle forming bracket

Technical field

The present invention relates to a kind of method of making circle forming bracket, wherein circle forming is put into formation mould, and load with synthetic material.

Background technology

Term " circle forming " refer to knitting machine, particularly warp knitting machine at this those when producing knitwear, participated in the abbreviation of the element of lopping.Therefore, it not only refers to circle forming originally, and for example knitting needle, slide bar, pusher jack and similar articles also instruct the yarn element, for example sley point, comb shape pusher jack or similar articles.

Circle forming in the warp knitting machine is arranged side by side in a large number.In order to make their operations easier, several circle formings are combined respectively in groups, and are fixed in the support.Then can be installed in these circle forming brackets in the needle bar pad of warp knitting machine or on the needle bar pad.

Known a kind of tool holder from DE 102 27 532 B4, it is used for the machine of lopping, and wherein said instrument is connected with each other by the synthetic material body.In a kind of structure, the synthetic material body passes instrument.In the another kind structure, synthetic material body partly circuit card is lived these instruments.The synthetic material body is pressure injection body at this.After support is made, also need circle forming is carried out expensive reprocessing, be used for making instrument to reach final portrait orientation and collimation.

DE 196 18 368 A1 have described a kind of device, and its thread-guide element and supporter by warp knitting machine or knitting machine forms, and described supporter has groove at this, and this groove is filled with hardenable filler.Circle forming refers to sley point at this, in the unhardened filler of packing into also.In this method, circle forming must at a good pace be packed in the described supporter, namely before the filler sclerosis.Because can not guarantee without problems that filler can be pushed equably when circle forming is packed into, so also have such risk at this, be that the lopping instrument also must be reprocessed after manufacturing process originally, be used for making them directed in parallel to each other, and vertically aliging in expectation.

Summary of the invention

Task of the present invention is to provide a kind of cost favourable manufacture method.

This task is achieved in the method for described type in front like this, namely synthetic material is being cooled at the most 60 ℃ temperature from its temperature that is flow-like within 3 seconds at the most.

In this method of operating, the orientation of circle forming is carried out in formation mould.Namely circle forming is placed in the formation mould with final portrait orientation and the collimation of pursuing.If insert in the formation mould subsequently and make its sclerosis, will form the circle forming bracket of expectation to synthetic material.But because the time that high temperature exists is quite short, formation mould and circle forming are not all heated significantly, so can not produce stress in the material of circle forming, described stress may make each other fault orientation of circle forming.Synthetic material surrounds circle forming by the cooling form fit with connecting, and therefore circle forming bracket has just been made after the synthetic material sclerosis.Described being hardened under the temperature that is lower than 60 ℃ carried out.Circle forming is adding man-hour and almost keeping identical temperature fixedly the time in synthetic material.Yes in small temperature rising inevitably.But because the importing of heat can be limited in the quite short time period, also be limited so this temperature raises.

Preferably, synthetic material is being cooled at the most 30 ℃ temperature in 3 seconds at the most.Therefore also a small amount of heat can be in circle forming, inputted, thereby also less stress may be in the material of circle forming, produced.

Preferably, synthetic material was heated to the temperature of the scope that is in 180 ℃ to 250 ℃ before putting into formation mould.In this temperature range, the liquidity of synthetic material can so that it can join in the formation mould without problems.On the other hand, this temperature is also hanged down the degree that can fully cool off rapidly to synthetic material.If synthetic material self is not cooled to 60 ℃ at the most, 30 ℃ preferred temperature at the most particularly within the described time, then can correspondingly realize fast drop in temperature by dispelling the heat targetedly from the outside.

Preferably, with the pressure in 3 to the 40 bar scopes synthetic material is added in the formation mould.Therefore formation mould can be filled with the low pressure pressure injection.Owing to avoided high pressure, so avoided too extra stress.In addition, only needing very little power in the synthetic material adding formation mould.This has reduced power consumption, and therefore described method also can advantageously be implemented by cost in energy point of view.

Preferably, use polyamide as synthetic material.The polyamide of fusing highly, it adds in the formation mould with small pressure, can fully cool off rapidly and also solidify simultaneously, but so the circle forming form fit be enclosed in the support with connecting.Can cancel the high post processing of cost, particularly orientation works again.Another advantage is, this synthetic material lightweight.

Description of drawings

The below describes the present invention by reference to the accompanying drawings by preferred embodiment.Wherein:

Unique Fig. 1 shows the schematic views of the circle forming bracket with pusher jack.

The specific embodiment

Circle forming bracket 1 has a plurality of pusher jacks 2, and they are synthesized together materials for support body 3 and fix.For making this support, the formation mould that is not shown specifically is put into and be fixed on to pusher jack 2.Final portrait orientation and collimation that pusher jack 2 is pursued are carried out at this.

Formation mould has cavity, and its shape is corresponding with the shape of later supporter 3.The polyamide that highly melts is housed in this cavity, it is encased in the formation mould with small pressure, for example with the pressure in 3 to the 40 bar scopes, wherein preferably, this pressure is in the bottom of described pressure limit, and is namely special in the scope of 3 to 10 bar.

Before synthetic material is inserted in the formation mould, it is heated to about 200 ℃.Can be less than 3 seconds, particularly synthetic material is being cooled at the most 60 ℃ or even 30 ℃ temperature at the most within about 2 seconds now.Preferably use the synthetic material that in the described time period, carries out corresponding cooling at this.If the cooling velocity of synthetic material is too slow, then can reach by the heat radiation of outside the cool time of expectation.

Because in fact the effect limits that temperature improves in the relatively short time period, so formation mould and pusher jack 2 can not be heated significantly, therefore can not produce negative stress in the material of pusher jack 2.

Synthetic material is for example solidifying in time period of 2 seconds simultaneously, and the connection of pusher jack 2 form fit be enclosed in the supporter 3.

In this method of operating, in the fixation procedure in the manufacturing procedure process and in support, pusher jack 2 nearly all keeps identical temperature.Therefore in fact got rid of the stress in the material of pusher jack 2, described stress may occur after the large temperature difference of appearance.They can allow without problems less stress, because can not disturb pusher jack 2 orientation each other and their portrait orientation.

In addition, the polyamide that highly melts has small quality, so supporter 3 finally has small quality too.For the moving element of knitting machine, low quality is always wished.

Claims

1. make the method for circle forming bracket, wherein, circle forming is put into formation mould, and load with synthetic material, it is characterized in that, synthetic material is being cooled at the most 60 ℃ temperature from its temperature that is flow-like within 3 seconds at the most.

2. by method claimed in claim 1, it is characterized in that, synthetic material is being cooled at the most 30 ℃ temperature within 3 seconds at the most.

3. by method claimed in claim 1, it is characterized in that synthetic material is heated to the temperature in the scope that is in 180 ℃ to 250 ℃ before in joining formation mould.

4. by method claimed in claim 1, it is characterized in that, with the pressure in 3 to the 40 bar scopes synthetic material is joined in the formation mould.

5. by method claimed in claim 1, it is characterized in that, use polyamide as synthetic material.