CN1714182A

CN1714182A - Mechanical weaving loom

Info

Publication number: CN1714182A
Application number: CN 200380103816
Authority: CN
Inventors: 沃尔特·斯塔德
Original assignee: Textilma AG
Current assignee: Textilma AG
Priority date: 2002-12-02
Filing date: 2003-12-01
Publication date: 2005-12-28
Anticipated expiration: 2023-12-01
Also published as: JP4185053B2; HK1081605A1; DE50304987D1; JP2006508272A; EP1567699B1; CN100554546C; AU2003281892A1; EP1567699A1; WO2004050975A1; CH696304A5

Abstract

The invention relates to a mechanical weaving loom comprising an expander device (12) arranged downstream of a weaving point (10) for the web of endless fabric (16) to be produced. Said expander device comprises a deviating edge (14) for the web of endless fabric (16), against which a freely rotatable round rod (18) is pre-stressed over the entire width of the web of endless fabric in a floating manner. In order to simplify and to improve the accessibility, the round rod (18) at least partially consists of a ferromagnetic material, and is pre-stressed against the deviating edge (14) by means of magnets (20) which are distributed over the length of said rod, on the frame (24) of the loom.

Description

Loom

Technical field

The present invention relates to a kind of as claim 1 loom as described in the preamble.

Background technology

This class loom noted earlier is repeatedly known, and is for example open by DE 23 02 949.This loom has one to be knitted a little, has arranged an open-width apparatus that the made webbing of confession is used thereafter.This open-width apparatus comprises a guiding rib of using for webbing, and one is being extended on the whole width of webbing and round bar free to rotate abuts on this guiding rib in the mode of arranging of floating with being pre-compacted.Yet its shortcoming is: this round bar be arranged on the frame, include one and constitute webbing and send into and send in the groove in slit of guiding rib.This webbing also must delivery in this slit, advance around this round bar, and derive again through the second guiding rib at this place, slit.Being used for that round bar is pressed to the prestressing force that imports rib is determined by the drawing device place suffered pulling force of webbing.This structure of open-width device has such shortcoming: webbing is imported to groove, walks around this round bar and webbing is derived from this groove through the slit is very complicated, pretty troublesome.This is not only like this when loom is set, and also is like this when loom possible breakdown occurs and gets rid of especially.

Summary of the invention

The technical problem to be solved in the present invention is this specification to be begun the loom that part mentions improve, and makes it the shortcoming of being mentioned no longer occur.

Above-mentioned technical problem is to adopt the technical characterictic of claim 1 characteristic to solve by this specification being begun the loom that part mentions.This round bar is applied prestressing force and it is abutted on this guiding rib by the magnet that on the whole length of this round bar, distributes, so just can not will this round bar be arranged in the groove that has a slit, this round bar places on the webbing in the come-at-able mode of freedom.This round bar also must be no longer be pressed against on the guiding rib by the pullout forces of this webbing, round bar is abutted in the prestressing force mode magnetic force on the guiding rib realizes and be based on.By this round bar freely is arranged on the webbing, just can be for carrying out adjusting work and/or repair frame round bar is taken off, thus at any time can be free near webbing.In addition, this magnet that is distributed on the whole round bar length provides one to contact pressure uniformly on whole length.

The preferred structure of this loom is described in dependent claims 2 to 9.

The magnet that is used for the pretension round bar can be electromagnet as claim 2.Its advantage is: can make its break-make on the one hand, thus round bar be taken off easily; The field intensity of magnet can be regulated in the scope of broad by electric current on the other hand, so can carry out the best to open-width apparatus according to the fabric and the mode of production and regulate.Yet it is simple especially adopting loom structure as claimed in claim 3, and magnet wherein is permanent magnet, and this guarantees that structure is simple especially, and just can work when not needing drive current.

According to claim 4, the contact pressure of magnet is greater than the pulling force that is applied to by a drawing device on the webbing.Can as claim 5, be provided with suitably in case of necessity and be held in this round bar end at least and keep the backing roll that compresses.In this case.The contact pressure of magnet can be less than the pulling force of drawing device.Suitable manner is that this backing roll is abutted on the round bar with being pre-compacted.For the installation and the adjusting that make loom and keep in repair more conveniently, this backing roll can also be arranged.Improve in order to make by the driving of the webbing of advancing to round bar, preferably this round bar has a surface that strengthens friction.So this round bar can for example have a caoutchouc elasticity shell as claim 6, perhaps have a sandpaper-like shell as claim 7.According to claim 8, this round bar can have a helical form shaping shell, and wherein the spiral moulding on the round bar two halves has back to the direction of advancing.An a kind of like this round bar and a smooth guiding rib concur, and are used to make the webbing of advancing to expand to both sides and stretch.

A kind of loom structure as claim 9 is especially efficiently, and guiding is provided with rib on the rib in this loom, and these ribs are seen to lean outward in the both sides of this center line along the direct of travel of webbing and tiltedly extended.In this case, described round bar does not have helical form shaping shell worthily.

Description of drawings

Elaborate below in conjunction with the embodiment of accompanying drawing to loom of the present invention:

Fig. 1 shows the schematic diagram of a loom vertical section;

Fig. 2 show one can in loom shown in Figure 1, use the guiding rib;

Fig. 3 shows a sectional drawing that has the round bar of a helical form shaping shell.

The specific embodiment

Fig. 1 shows the section of a loom schematically.A confession of warp thread 2 formation weft yarn 6 enters shed open 4 wherein.Weft yarn 6 is knitted reed 8 by one and is beaten up and become the selvedge of fabric 10 then.

Arranged an open-width apparatus 12 with a guiding rib 14 after the selvedge 10 of this fabric, the webbing of making 16 is pressed against on its guiding rib 14 by a round bar 18.The round bar of being made by ferromagnetic material 18 is pressed against on this guiding rib 14 by magnet 20, thus with webbing 16 through guiding rib 14 along round bar 18 delivery and access arrangement, so the webbing 16 that is driven by a drawing device 22 rotates this round bar 18.This round bar is arranged on the frame 24 with ralocatable mode, and free to rotate.A plurality of magnet of arranging and being fixed on the frame 24 along this round bar length are used to produce necessary contact pressure.This contact pressure is greater than the pulling force that is applied to by drawing device on the webbing.

In above-mentioned example, this round bar 18 is made of a ferro-magnetic core 26 that is encased by shell 28.Replace a kind of caoutchouc elasticity shell, can also be provided with the shell that other can improve frictional resistance between webbing 16 and the round bar 18.A kind of like this shell for example can be made of sand paper.

The guiding rib 14 that concurs with round bar 18 is provided with rib 30 as shown in Figure 2, and these ribs are seen to lean outward in center line 32 both sides along webbing 16 direct of travels and tiltedly advanced.

Fig. 3 shows a round bar 18a with helical form shaping shell 28a, has helical form rib 34 on this helical form shaping shell, and these helical form ribs have back to the direction of advancing on the two halves of this round bar 18a.A kind of like this round bar 18a makes the webbing of advancing stretch perpendicular to its vertical expansion with a smooth guiding rib 14 suitably.

Shown in chain-dotted line part among Fig. 1, at least in this round bar end, set backing roll 36 in the mode that is distributed on its length for this round bar in case of necessity.This backing roll 36 can outwards be provided with the cantilever 38 that inwardly swingingly is arranged on the frame 24 through one respectively.This cantilever 38 has a slotted hole 40 for axle 42 usefulness of backing roll 36.Acting on 42 at this and to be used for backing roll 36 precompressed are abutted in spring 44 on the round bar 18 tightly.

Reference numeral

2 warp thread

4 shed opens

6 weft yarns

8 knit reed

The selvedge of 10 fabrics

12 open-width apparatus

14 guiding ribs

16 webbings

18 round bars

The 18a round bar

20 magnet

22 drawing devices

24 frames

26 ferro-magnetic cores

28 shells

The 28a shell

30 ribs

32 center lines

34 ribs

36 backing rolls

38 cantilevers

40 slotted holes

42

44 springs

Claims

1. loom, having one is arranged in and knits point (10) afterwards, the open-width apparatus (12) of the webbing of Gong making (16) usefulness, this open-width apparatus has a guiding rib (14) for webbing (16) usefulness, one is extended on the whole width of webbing (16), and round bar (18 free to rotate, 18a) abut on this guiding rib (14) in the mode of arranging of floating with being pre-compacted, it is characterized in that: described round bar (18,18a) part is made of ferromagnetic material at least, and this round bar (18,18a) abut on this guiding rib (14) along the magnet (20) that its distribution of lengths is arranged on the frame (24) by some with being pre-compacted.

2. according to the described loom of claim 1, it is characterized in that: described magnet (20) is electromagnet.

3. according to the described loom of claim 2, it is characterized in that: described magnet (20) is permanent magnet.

4. according to each described loom in the claim 1 to 3, it is characterized in that: the contact pressure of described magnet (20) is greater than the pulling force that described webbing (16) is produced by a drawing device (22).

5. according to each described loom in the claim 1 to 4, it is characterized in that: set for it at the both ends of described round bar (18) at least and preferably be pre-compacted the backing roll (36) that abuts on this round bar.

6. according to each described loom in the claim 1 to 5, it is characterized in that: described round bar (18) has the shell (28) of a caoutchouc elasticity.

7. according to each described loom in the claim 1 to 5, it is characterized in that: described round bar (18) has the shell (28) of a sand paper type.

8. according to each described loom in the claim 1 to 5, it is characterized in that: described round bar (18a) has a helical form shaping shell (28a), and wherein the helical form rib (34) on the halves of this round bar (18a) has back to the direction of advancing.

9. according to each described loom in the claim 1 to 8, it is characterized in that: described guiding rib is provided with rib, and these ribs are seen to lean outward along the direct of travel of webbing in the both sides of the center line of described guiding rib and tiltedly extended.