GB2112026A - Stitch presser for flat knitting machine - Google Patents
Stitch presser for flat knitting machine Download PDFInfo
- Publication number
- GB2112026A GB2112026A GB08235552A GB8235552A GB2112026A GB 2112026 A GB2112026 A GB 2112026A GB 08235552 A GB08235552 A GB 08235552A GB 8235552 A GB8235552 A GB 8235552A GB 2112026 A GB2112026 A GB 2112026A
- Authority
- GB
- United Kingdom
- Prior art keywords
- slides
- stitch
- presser device
- stitch presser
- cam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/88—Take-up or draw-off devices for knitting products
- D04B15/90—Take-up or draw-off devices for knitting products for flat-bed knitting machines
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
Abstract
A stitch presser device for a flat knitting machine consists of slides adapted to act on the knitted fabric in the work zone, the device comprising at least two independent slides 14, 16 having differing cross-sectional shapes and associated with the same direction of displacement. These can be rendered operative or inoperative, as required, during the knitting process. The cross-sectional forms available permit the best possible use for all single-bed and double-bed types and sequences of knit that occur within a piece of material. <IMAGE>
Description
SPECIFICATION
Stitch presser device for a flat knitting machine
The present invention relates to a stitch presser
device for a flat knitting machine with needle beds
arranged in the form of an inverted V and with individuaily displaceable needles, the presser
device being of the kind which is connected to
work stations in the form of knit and stitch transfer stations formed by cam-boxes, and the presser
device in its work zone consisting of operative slides which extend parallel to the work front of
the needles.
Stitch presser devices of this kind are used on
flat knitting machines of all types, their purpose
being, on the one hand, to economise on the
existing devices or weights for drawing off the
knitted material to be fitted below the needle beds
and, on the other hand, to render it possible to
produce, economically, knitted pieces of correct
form for clothing purposes, unusual structural
patterns, or the like.
CH-PS 516.676,598.386 (580/80-4) disclose a number of stitch pressers, having slides
of various cross-sectional shapes in the work zone.
In particular, round, oval, flat and triangular
transverse sections, as well as a number of
longitudinal sections of many shapes were
described therein.
When using these stitch pressers, it has been
found that round transverse sections, for example,
are unsuitable for single-bed types of knit. On the
other hand, flat transverse sections improve this
type of knit without, however, ensuring that the
stitches are perfectiy formed in the case of double
bedded types of knit.
Combined cross-sections for slides, as
described, for example, in CH-PS 592.763,
provide results that are not completely
satisiactory, since greatly differing types of knit,
such as the single-bed and double-bed types, are
frequently combined in one and the same article.
It therefore follows that the usual cross
sections do not include a suitable shape that can
be used in the same way to provide the best
results for all types and sequences of knit that
occur.
In addition, all of the existing systems suffer
from the considerable disadvantage that the
cross-sectional shape of the slides, must be fitted
in the apparatus prior to the commencement of
knitting, and a change can be made only when the
machine is at a standstill.
This situation not only leads to longer stoppage
times, but also greatly reduces the versatility of
the machine.
The object of the present invention is to avoid
the above-mentioned disadvantages of existing
stitch presser devices.
According to the present invention there is
provided a stitch presser device of the kind
described above, wherein, for the same direction
of displacement of the cam-boxes, at least two
independent slides having differing cross-sectional
shapes are associated with each work station, and
in that one or other of the cross-sectional shapes
of the slides can be optionally rendered operative
or inoperative during the knitting process.
The subject-matter of the invention will now be
described in greater detail by reference to an
embodiment illustrated in the drawings, in which:
Figure 1 shows a simplified view of part of a
stitch presser device for a knitting system of a
double-bed flat knitting machine, with slides of
round and flat cross-sectional shape,
Figure 2 is a sectional view along line Il-Il of
Figure 1 , with a flat slide in operation,
Figure 3 is a sectional view similar to that of
Figure 2, but with a round slide in operation,
Figure 4 is a diagrammatic representation of
the positions of the slides depending upon
allotment and direction of displacement.
In the stitch presser device illustrated in Figure
1 and for the purpose of rendering it easier to
understand, the corresponding members of the
front and rear needle beds are shown as being in
the same plane of the drawing as indicated by the
arrows A and B in Figure 2.
Furthermore, only those parts are shown that
are necessary for explaining the present form of
construction.
Two needle beds 1 and 2 (Figure 2), each
having a verge bit 33, are arranged in the form of
an inverted V on a machine bed, not illustrated.
Each needle bed has a plurality of slots 3, 4 in
which needles 5, 6 are slidable. For the purpose of
moving the needles, use is made of cam-boxes 7 ,and 8 accommodated in a common carriage 9
which moves in a reciprocating motion over the
needle bed.
The actual stitch presser device extends along
opposite inclined front faces of the carriage, and
this device consists of two substantially identical
parts 10 and 11. Part 10 of the device is
connected by a base plate 12 to the front cam-box
7, and the part 11 thereof is similarly connected to
the rear cam-box 8 by the base plate 13.
In the case of a single knitting system, the base
plate 1 3 incorporates, for example, means for
actuating slides 1 6 of a particular cross-sectional
shape which, for the right-to-left direction of
movement corresponding to the direction
indicated by the arrow in Figure 1, also have
means for actuating slides 14 having another
cross-sectional form, and suitable for the left-to
right direction of movement, i.e. in the direction
opposite to that indicated by the arrow.
Further slides 1 5 and 1 7 are correspondingly
arranged on the base plate 12 and their
significance will be described hereinafter.
Arranged on each base plate 1 2 and 1 3 are
horizontally disposed shafts 1 8 and 19, the
precise level of which, in relation to the needle
beds 1 and 2, is obtained by means of adjusting
rods 20 and 21 and fixing blocks 22.
In order to provide the shafts 1 8 and 1 9 with
different pivot positions, the adjusting rods 21 are
shorter than the adjusting rods 20. A fixing screw
23 (Figure 1) permits fine adjustment to be readily
made by rotating the adjusting rod.
Each shaft 18 and 19 is surrounded by a drumlike socket 24 and 25 which is mounted at each end by means of covers 26 and 27 and is laterally secured by circlips 28.
The slides 14 to 1 7 are firmly connected externally to the movable sockets 24 and 25, and in the zone of the needle beds 1 and 2, the slides have different cross-sectional shapes; also connected to the sockets are actuating pegs 29, which are disposed opposite the angled part of the slides.
The actuating pegs 29 are in contact with cams 30 and 31, which are mounted on bars 32 which are movable in unison.
A torsion spring 34, fitted between the shaft 1 8 and the socket 24 and a further torsion spring 34 fitted between the shaft 1 9 and the socket 25 cause the actuating pegs 29 to bear permanently against the associated cams 30 and 31, and at the same time cause the slides 14 to 17 to be resiliently supported on the knitted material which is located between the two needle beds 1 and 2.
As can also be seen from Figures 1 and 2, lateral displacement of each bar 32 and therefore of the cams 30 and 31 from a median position causes rotary movement of the sockets 24 and 25 and of the slides 14 to 1 7 in one or other of the directions indicated by the double-headed arrow.
The mode of operation of the described form of construction of the stitch presser device of the invention will now be described in detail by special reference to Figure 4.
The production of an article on a flat knitting machine usually begins with the starting courses of the knitted material in the form of a border, the needles of both needle beds coming into use.
For this purpose, use should be made of slides of round cross-sectional shape.
To this end, and for the impending movement of the carriage from right to left as indicated by the yarrow, the cams 30 and 31 of the front device have been brought into the left-hand position by means of a control programme, as shown in Figure 4a. This enables the slide 1 5 of round crosssectional shape to be swung into the work zone of the needles (Figure 3).
On the other hand, the cams 30 and 31 of the rear device remain in median position so as to hold the two slides 14 and 1 6 in the inoperative position.
On completion of the foreward movement of the carriage, the cam position is again changed for the impending return movement.
As illustrated in Figure 4b and in the direction indicated by the arrow, the cams 30 and 31 of the front device are now brought into the median position, and this has the effect of rendering the two slides 1 5 and 1 7 inoperative. The cams of the rear device, however, are moved to the right so as to release the slide 14 and to bring it into operation.
This process of engaging the disengaging the slides 14 and 1 5 of round cross-sectional shape in dependence upon the direction of movement of the carriage is repeated the desired number of times.
However, if a single-bed type of knit, for example, is to occur during the production of an article and only the needles of one needle bed are to be used, another cross-sectional form of the slides, i.e. a flattened form, becomes necessary.
Figures 4c and 4d show, in a similar manner, how the slides 1 6 and 1 7 are alternately brought into action depending upon whether the carriage is moved from right to left or in the opposite direction. The cams 30 and 31 are actuated in a similar manner.
Since the slides do not interfere with each other during their arcuate movement about the verge bit 33 as they do not move along common arcuate sections, the device may also be rendered completely inoperative.
The idea underlying the invention remains the same irrespective of whether single-system or multi-system flat knitting machines are involved, since all that is required is a corresponding extension.
It will of course be understood that a device of this kind is suitable not only for work stations for forming stitches, but that it may also be used for work stations for the transference of stitches or the like, that is to say, in all instances whe e different cross-sectional shapes of slides are used.
Claims (7)
1. A stitch presser device for a flat knitting machine with needle beds arranged in the form of an inverted V and with individually displaceable needles, the presser device being connected to work stations in the form of knit and stitch transfer stations formed by cam-boxes, and the presser device in its work zone consisting of operative slides which extend parallel to the work front of the needles, characterized in that, for the same direction of displacement of the cam-boxes, at least two independent slides having differing cross-sectional shapes are associated with each work station, and in that one or other of the crosssectional shapes of the slides can be optionally rendered operative or inoperative during the knitting process.
2. A stitch presser device according to claim 1, characterised in that allotment of the slides to the work stations takes palce at the points where the movement of the cam-boxes is reversed.
3. A stitch preser device according to claim 1, characterised in that the slides are controlled by a machine programme.
4. A stitch presser device according to claim 1, characterised in that each slide is secured to a holder in such manner that it executes an arcuate movement about a verge bit associated with the needle beds.
5. A stitch presser device according to claim 4, characterised in that each slide has its own pivot.
6. A stitch presser device according to claim 4 or claim 5, characterised in that the rotary movement of each slide is achieved by means of a helical cam face, which co-operates with a pin.
7. A stitch presser device for a flat knitting machine, substantially as hereinbefore described with reference to the accompanying drawings.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH8241/81A CH653391A5 (en) | 1981-12-23 | 1981-12-23 | MESHSTRIPING DEVICE FOR A FLAT KNITTING MACHINE. |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2112026A true GB2112026A (en) | 1983-07-13 |
GB2112026B GB2112026B (en) | 1985-09-04 |
Family
ID=4337315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08235552A Expired GB2112026B (en) | 1981-12-23 | 1982-12-14 | Stitch presser for flat knitting machine |
Country Status (5)
Country | Link |
---|---|
CH (1) | CH653391A5 (en) |
DE (1) | DE8234394U1 (en) |
FR (1) | FR2518591B1 (en) |
GB (1) | GB2112026B (en) |
IT (1) | IT1156393B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2143547A (en) * | 1983-07-18 | 1985-02-13 | Textima Veb K | Stitch presser in a flat knitting machine |
FR2647817A1 (en) * | 1989-06-02 | 1990-12-07 | Shima Seiki Mfg | KNIT PRESSING DEVICE FOR FLAT KNITTING FLAT KNITTING MACHINE |
CN101509172B (en) * | 2008-02-15 | 2012-02-22 | 株式会社岛精机制作所 | Grey cloth pressing device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3049900A (en) * | 1959-02-17 | 1962-08-21 | Paliz Holding Ag | Pressure device for a flat bed knitting machine |
BE759305A (en) * | 1969-11-21 | 1971-04-30 | Billi Spa | MESH TENSIONING DEVICE IN FORMATION IN STRAIGHT DOUBLE FRONT KNITTING MACHINES |
-
1981
- 1981-12-23 CH CH8241/81A patent/CH653391A5/en not_active IP Right Cessation
-
1982
- 1982-12-08 DE DE19828234394U patent/DE8234394U1/en not_active Expired
- 1982-12-14 GB GB08235552A patent/GB2112026B/en not_active Expired
- 1982-12-15 IT IT68471/82A patent/IT1156393B/en active
- 1982-12-17 FR FR8221220A patent/FR2518591B1/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2143547A (en) * | 1983-07-18 | 1985-02-13 | Textima Veb K | Stitch presser in a flat knitting machine |
FR2647817A1 (en) * | 1989-06-02 | 1990-12-07 | Shima Seiki Mfg | KNIT PRESSING DEVICE FOR FLAT KNITTING FLAT KNITTING MACHINE |
US5063755A (en) * | 1989-06-02 | 1991-11-12 | Shima Seiki Mfg. Ltd. | Fabric presser for V-bed flat knitting machine |
CN101509172B (en) * | 2008-02-15 | 2012-02-22 | 株式会社岛精机制作所 | Grey cloth pressing device |
Also Published As
Publication number | Publication date |
---|---|
FR2518591A1 (en) | 1983-06-24 |
GB2112026B (en) | 1985-09-04 |
IT1156393B (en) | 1987-02-04 |
CH653391A5 (en) | 1985-12-31 |
DE8234394U1 (en) | 1983-10-27 |
IT8268471A0 (en) | 1982-12-15 |
FR2518591B1 (en) | 1986-05-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19921214 |