JPS6214664B2 - - Google Patents

Abstract

This invention concerns a procedure for forming a pantyhose product (50) with a continuous processing motion on knitting machines with two needle beds and with at least two feeds, one for each needle bed, said procedure envisaging the formation of two knitted tubes (57A-57B), one within the other, on two needle beds, whereby the two tubular fabrics are connected together along a lengthwise connecting zone (52) having a length which corresponds substantially to the panty portion (51) of the product (50), and a lengthwise separating cut is made substantially on the centre line of said connecting zone (52), and whereby said procedure envisages that, so as to form the zone (52) connecting the two knitted tubes (57A-57B) with at least one feed (56), the yarn (55) is knitted by a given portion of needles (54) selected at substantially regular intervals on one needle bed (A) and also by some needles (154) of the opposed needle bed (B), and whereby said selected needles (54) pass with their own hooks at the same level as the respective sinkers so as not to take the yarn, whereas the corresponding needles (154) of the opposed needle bed which are aligned with said needles (54) are set to work and knit the yarn with the stitch of the tubular fabric processed by said needles (54) and thus form a connecting bridge (59), said selection being performed in such a way that said needles (54) pass in one course at the same level as the sinkers without taking the yarn but take the yarn in the next course and make stitches. This invention also concerns a machine with opposed needle beds to carry out said procedure and also concerns the pantyhose product thus obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for knitting pantyhose products by continuous working movements on a knitting machine with two needle beds.

The invention also relates to a pantyhose knitting product knitted by the method described above, and to a knitting machine having two needle beds suitable for knitting the product using the method described above.

Methods for knitting pantyhose products on knitting machines with two needle beds are known, and these known methods are particularly suitable for knitting machines with two cylinders or knitting machines with a cylinder and a dial. Particularly suitable for

The above-mentioned known method consists of two circular needle beds.
This relates to the case where book organizing tubes are organized inside each other.

According to the known method, the legs of the pantyhose are each made as separate tubular products.

At locations corresponding to the panty portions, the tubular products are interconnected along at least one longitudinal line and separated from each other along longitudinal lines adjacent to this longitudinal line.

The inner tube is then pulled out and turned over, resulting in an open, symmetrical pantyhose-tucking product.

In particular, Solis Srl name patent IT916700 (US Pat. No. 4,011,738) describes a knitting method with a knitting machine equipped with two cylinders for knitting panty parts by alternating movement of the cylinders. This method makes it possible to form a 360° knitting course by transferring the yarn from one needle bed to the other with each reversal of the direction of rotation of the cylinder.

According to this method, two tube sections are formed, one in the other, which are open in the longitudinal direction and which pass from one needle bed to the other during processing. Thread sections interconnect these tubes along their longitudinal edges.

In this case, the two legs, each consisting of a smooth stitch and a back stitch, are knitted one into the other, and this process is carried out by the coupled movement of the cylinder and separately on the two needle beds. This is carried out by feeding the yarn.

Said method involves significant limitations in terms of production speed, since it is necessary to reverse the direction of rotation of the cylinder and to limit the yarn feed.

This method also suffers from poor appearance due to the presence of a longitudinal section made of straight threads and without stitches corresponding to the crotch line of the panty section.

In this knitting machine process, the crotch line corresponds to the longitudinal edge connecting the outer knitted tube to the inner knitted tube.

said unstitched longitudinal section is made by a thread transitioning from one needle bed to another;
It also has a width that is substantially the same as the distance between the two opposing cylinders.

Due to the constructional requirements of this knitting machine, it is not possible to reduce the distance between the two opposing cylinders, and the unstitched longitudinal sections are very noticeable in the product.

Additionally, the unstitched longitudinal sections compromise the strength and stability of the panty section of the product.

Patent IT No. 992,231 (U.S. Pat. No. 3,975,924) of Solis SRL describes a knitting method using a knitting machine with two cylinders for knitting panty parts by continuous rotational movement of the cylinders. .

This method passes the thread from the needles of the first cylinder to the needles of the second cylinder at a position that is angularly different from the position at which the thread is transferred from the needles of the second cylinder to the needles of the first cylinder.

This method makes it possible to interconnect a tubular fabric knitted by two cylinders at least in said two positions, the longitudinal separating cuts being carried out corresponding to the spaces between said two positions. .

Although this method solves the problem of production rate limitations in the aforementioned patent, the nature of the connection between the two knitted tubes remains unchanged.

Also, as a practical matter, the presence of said longitudinal sections without stitches next to the edges obtained after said longitudinal separation cutting causes problems with the appearance and strength of the product; Product quality completely deteriorates.

Inventor's certificate CS 169533 (UHLIR) describes a method of using a knitting machine with knitting needles equipped with double springs to obtain the desired fabric in the connecting area.

In fact, the connecting area comprises stitch courses knitted with front and back stitches in various sequences, which stitches can only be obtained with the same knitting needles if they are equipped with a double spring.

Furthermore, the inventor's certificate CS No. 169533 knits a body (panty) part using half the number of needles of the present invention with the same cylinder gauge.

In contrast, in the present invention, all the stitches are of the same type, and the two stitches are opened to form the panty part.
The connections between the sheets of fabric are made by a different method.

The method proposed by the applicant not only provides a body part (panty part) with excellent abrasion resistance, but also makes it possible to create a joint between both edges that is stable over a long period of time and has an excellent appearance. It is something.

The method of inventor's certificate CS 195758 (JAVOREK) has various major limitations. This method operates with the knitting needles of the lower cylinder offset relative to the knitting needles of the upper cylinder, so that the panty section is made by half the knitting needles in a cylinder of the same gauge as that used in the method of the invention. Therefore, it is prone to wear and tear.

Whereas both edges of a fabric interconnected with loops each consist of stitches made of the same yarn, in the present invention the stitches of the connecting loops are made of the textured yarn of the other edge. Greater stability is therefore guaranteed.

In addition to the major differences mentioned above, CS
There is another aspect that calls into question the possibility of implementing the process of No. 195758 industrially. If we consider knitting needles such as 11 (FIG. 3) for making connections, it will be seen that these knitting needles do not knit the yarn P1. This is because these knitting needles do not form a stitch with thread P1 corresponding to the stitch forming point (knitting needle 9) of the upper cylinder, but they form a stitch with thread P2 at a later position. It is from.

In order to obtain such a result, knitting needles such as No. 11 of the lower cylinder should be placed above the abutting surface of the sinker of the upper cylinder at a distance equal to or greater than the distance between the needle head and the end of the latch at the maximum opening position of these knitting needles. need to rise to.

Therefore, the knitting needles of the lower cylinder have to penetrate into the appropriate grooves of the upper cylinder, and it is incomprehensible how these knitting needles can take up the thread P2 in such a position.

Patent application No. IT 9522A/80 (EP81830142.6) in the name of the applicant of the present invention discloses a machine comprising two cylinders or a cylinder and a dial, in which the panty part is knitted by continuous movement of the cylinders. It describes the method depending on the machine. This is done by activating the knitting needles of both needle beds during knitting so that a rib stitch structure consisting of continuous face stitches and back stitches is obtained by one or more feeds along the longitudinal section. This is done in a way that forms two connected tubular parts. Next, a longitudinal separation cut is performed.

Although this method allows for superior production speeds and ensures greater strength and stability in the panty area of the product, it does not solve the problem of product appearance. This issue is the most important one besides product quality.

As is clear from the foregoing, the appearance, strength and stability of the panty section is dependent on the interconnection area of the two knitted tubes.

Although the strength and stability problem was partially solved by the method described in patent application IT 9522A/80 filed by the applicant, this strength and stability defect and particularly the unsatisfactory appearance This is a drawback common to all known methods.

However, the quality of all known methods requires that on at least one side of the line connecting the two tubes there is a stitch-free longitudinal section with a width substantially equal to the spacing between the two opposing cylinders. This remains a fundamental problem.

The presence of said longitudinal section without stitches
It depends on the nature of the connection between the two knitted tubes in known methods and on the distance between the two opposing cylinders.

As previously mentioned, the spacing between the opposing cylinders cannot be reduced due to structural requirements.

The object of the present invention is to provide a processing method that solves the above-mentioned technical problems, and also to provide a product with an excellent appearance.

According to the invention, there is provided a method for forming a pantyhose product by continuous working movements on a knitting machine having two needle beds and at least two feeds, one for each needle bed. , the method involves forming two knitted tubes, one in the other, on two needle beds, the two tubular fabrics having a longitudinal connecting section of length corresponding to the panty section of the product. and a longitudinal separation cut is carried out at the substantial center line of the connecting section, and the method includes forming a connecting section of two knitted tubes by at least one feed. , the yarn is knitted with a predetermined portion of needles selected at substantially equal intervals on one needle bed and a portion of needles on the opposite needle bed, and the selected knitting needles have their own needle heads. The threads were set to run flush with each sinker so as not to pick up threads, aligned with said knitting needles against this, and to knit the threads with the stitches of the tubular fabric processed by said knitting needles. Corresponding knitting needles of opposing needle beds form a connecting loop, and the selected needle passes through the same level as the sinker in one course without taking up yarn, but in the next course it takes up yarn. It is performed like a stitch.

The present invention also provides a knitting machine for knitting two concentric tubular fabrics by means of at least two yarn feeds, one for each needle bed, having opposed needle beds, wherein the connection of the fabric tubes is ,
It is carried out using a needle arc with a width corresponding to the connecting area and at least one of the two yarn feeds, and in the connecting area, the N
One needle for each needle is selected so that it passes flush with each sinker without taking up thread at its needle head, and the corresponding knitting needle aligned with said knitting needle and placed on the opposite needle bed is The needles are selected in such a way that the threads are knitted together with the stitches of the tubular fabric knitted together to form a connecting bridge, and the needles are selected in such a way that the knitting needles pass through the same level as the sinker without taking up the thread, and in the next course The present invention relates to a knitting machine which is designed to perform stitches by taking two pieces.

The present invention also relates to a pantyhose product made by the method and knitting machine described above.

The method according to the invention allows obtaining excellent appearance and very good strength and stability in the panty part of the product.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to embodiments shown in the drawings.

knitting one of the two tubes 53A, 53B within the other to form a pantaste tucking product and processing each knitted tube in a needle bed with at least one feed 56 of yarn 55; is publicly known.

A connection between the two knitted tubes 53A, 53B is formed when these tubes are processed along their longitudinal portions to form the body or panty portion 51 of the product 50, and this connection It is known that the separation cut 62 is made along the substantial centerline of the.

After knitting on the knitting machine, the inner tube is pulled out from the outer tube and the product 50 is then turned over to obtain the condition shown in FIG. 11, and in contrast to this FIG. , the cross sections in FIGS. 9 and 10 correspond.

In the above-mentioned state of the product 50, the part 61 of the connecting region 52 which is closest to the cutting line 62 and which at the end of processing consists of so-called loose threads is inside the panty part 51 of the product 50.

According to the invention, a continuous movement is used to form the panty portion of the product 50, and in the connecting area 52 of the two knitted tubes 53A-53B:
Knitting needles 54 and 154 of needle beds A and B are activated simultaneously.

More specifically, two knitted pipe bodies 53A-53B
At the same time, the knitting needles 54 at regular intervals on one needle bed A are operated so as to interconnect them, and at the same time, some knitting needles 154 on the opposite needle bed B are also operated.

All of these methods yield stitches of the same type, and the two pieces of fabric constituting the two knitted tubes 53A-53B that are turned inside out to form the panty are separated between their mutually overlapping edges. The connection is made by providing a connection loop.

The method described above not only results in a more durable body part (panties), but also a long-term stable connection between its edges.

In this specification, two cylinders are provided, and each cylinder includes two knitted pipe bodies 53A-53.
We will consider an embodiment in which the product 50 is knitted in a knitting machine equipped with a yarn feed feeding the yarn 55 into either one of the knitting tubes, but with a large number of feeds for each knitting tube, or with cylinders and dials. This method can also be applied to knitting machines equipped with.

According to the invention, the connection is obtained by knitting threads 55 in both needle beds A and B.

Also according to the invention, at least the last needle 154 selected in said opposing needle beds near the end of the connecting section is the needle operated in the preceding and subsequent courses made by the same feed 56. 154.

The purpose is to cause each connection to occur in a different stitch wale than the connection made in the preceding and succeeding stitch courses, assuming that each connection occurs once per revolution.

This is to prevent the knitting loops from being anchored sufficiently well and also to improve the appearance of said connecting area 52 by giving it a dense appearance.

1, 2 and 3 show a preferred embodiment of the method according to the invention.

In this case, the area 52 connecting the knitted tubes 53A-53B is arranged inside a sector corresponding substantially to the position 32 of the knitting needles 54-154, and the longitudinal cut is carried out to correspond to the knitting needle position 16. be done.

Every other needle 54 on the needle bed A is selected and operated, and only a specific needle 154 on the opposite needle bed B is operated.

Figures 1, 2 and 3 show the cylinder's N.
Knitting needles 1 selected at the connecting part 52 every rotation
54 is shown.

In a preferred embodiment of the present invention, such needle selection is repeated every three rotations of the cylinder or every three stitch courses, but according to the present invention, needle selection can be repeated every N stitch courses other than three. It is possible.

To explain in more detail, in the needle bed A, positions 1 to 1
The knitting needles 54 corresponding to 32 are selected every other time, but in the opposite needle bed B, the knitting needles 54 corresponding to 32 are selected every other time.
Knitting needles 154 corresponding to 0, 16, and 22 are selected.

On the next rotation of the cylinder, the same knitting needles 54 as above are selected on needle bed A, but on the opposite needle bed B.
In , knitting needles 154 corresponding to positions 2, 8, 14, and 18 are selected.

Positions 10, 16, 22, etc. must be separated from each other by a number of stitches proportional to the distance between the stitching surface of the sinker of the upper cylinder and the stitching surface of the lower cylinder. It will be appreciated that in practice these positions 10, 16, 22 must be present at least every third knitting needle.

A smaller spacing between these locations may result in thread breakage during operation.

During the third rotation shown in FIG. 3, the knitting needles 54 selected in needle bed A are still the same, but
On the opposite needle bed B, knitting needles 154 corresponding to positions 12, 20, 26 and 32 are selected.

As is clear from the numbers of the respective positions above, in this connection area 52, the knitting needles 154 at different positions of the opposite needle bed B are actuated every revolution, and in each case, the knitting needles 154 that are actuated are It can be seen that 154 is offset with respect to the knitting needles 154 that are activated in the preceding and subsequent rotations, and that the same needle selection is repeated every N rotations of the cylinder. In this example N is 3 revolutions.

However, according to the present invention, the number and position of these knitting needles can be arbitrarily changed as long as the needle selection criteria for the knitting needles 54-154 that characterize this method are observed.

Figures 4, 5 and 6 are the first
After operating the knitting needles 54-154 at positions 1 to 32 according to the needle selection shown in FIGS. show.

Therefore, in a knitting machine equipped with opposed needle beds for knitting two concentric tubular fabrics 57A-57B with at least two yarn feeds 56, each corresponding to one needle bed A-B, the The needle selection is one every N stitches, and in subsequent courses the needle selection is varied by moving N-x stitches, where N equals 5 and N-x equals 3. This is desirable.

The operation of the needles 54-154 as described above in the connecting region 52 of the two knitted tubes 53A-53B (each knitted by its own yarn feed 56) can vary from smooth stitching of the front and back stitches, respectively. This enables the formation of two fabrics 57A-57B.

The fabrics 57A-57B include connection bridges 59, and each bridge is designated 110, 11 in the accompanying figures, depending on the position in which it is made.
6,122,102,108,114,118,
112, 120, 126 and 132.

In an embodiment of the invention, each of the connecting bridges 59 is formed by extending and braiding a loop 60 of one fabric 57A into the other fabric 57B, as shown in FIG.

7 is an enlarged front view of connecting bridge 59 of a portion of two fabrics 57A-57B opened and turned over as shown in FIGS. 8, 9 and 10.

For ease of explanation, three types of connecting bridges 59 are shown that can be made between two tubular fabrics 57A-57B. These figures illustrate the possibilities of the method according to the invention and the variants produced thereby. This is because needle selection can be reversed from needle bed to needle bed, moved by one or more wales, and needle selection can be repeated after at least one course of smooth stitches. This is because it can be done.

FIG. 7a thus shows the case in which a connecting bridge 59 is created during one rotation, but not during the next rotation, and by repeating this, a proper fixation of the loop is achieved.

FIG. 7a also shows the alternative fixation of the initially missed loop and the reciprocal fixation of the auxiliary fixation loop.

Figure 7b shows an example of connecting bridges 59 placed in each stitch. In this case the bridge must be offset one wale at a time in order to achieve a proper and stable fixation of the loop.

On the other hand, FIG. 7c shows the case of a reverse bridge. In this case, the bridge is woven starting from fabric 57A into fabric 57B,
Next, starting from fabric 57B, it is knitted into 57A.

These examples are clearly restrictive and illustrate the variety of methods and therefore of the aesthetic effects sought.

FIG. 11 is a schematic illustration of a panty portion 51 of a product 50 made by the method of the present invention. In this product, the fabrics 57A-57B of panty portion 51 are fully opened and stretched. The very fine appearance of the Fassner-like connecting area can be clearly seen from this figure.

The edges of the connecting area may be sharp or stepped and the connecting area may include one or more layers of connecting bridges 59.

8, 9 and 10 above show cross-sectional views of the panty portion 51 of the product turned inside out and opened. These cross-sectional views correspond to the stitch courses created in the connection area by the needle picks shown in FIGS. 1, 2, and 3, respectively.

As is clear from these cross sections, the position and number of the connecting bridges 59 formed between the two knitted tube bodies 57A and 57B vary synchronously along the connecting portion 52.

In addition to eliminating the above-mentioned drawbacks that appear on the sides of the connection area of panty parts made by the conventional continuous rotation method, the needle selection criteria according to the present invention also provides for the creation of a connection area 52 with improved thickness and consistency. knitting and an improved appearance of the connecting area of the two knitted tubes 57A-57B.

Attached to one needle bed, therefore one knitted tube body 5
The needle selection method described above for knitting the connected area 52 with one yarn feed 56 attached to 7A can be repeated and reversed for each needle bed, and the yarn 55 is knitted in the other knitting tube 57B. Send this feed 5
It is also possible to make it biased with respect to 6.

According to one variant of the invention, the connecting courses including the connecting bridges 59 are spaced apart from each other. That is, these connected courses are not sequential courses.

According to another variant of the invention, the connecting courses comprising the connecting bridges 59 are separated from each other by one or more connecting courses, and this connecting section 52
One rib knit is formed in the connecting area 5.
2 by the joint action of the needles of both needle beds A-B.

According to a further variant of the invention, the connection consisting of one rib stitch obtained by the cooperation of the needles of both needle beds A-B in the connection area 52 is provided by a rib stitch course. Every two connections obtained by a number of courses including connection bridges 59, whether separated or not, are included in the connection area 52.

Although preferred embodiments of the invention have been described above, many modifications will occur to those skilled in the art. For example, the number of knitting needles 54-154 that take part in knitting the connecting section 52 can be varied.
Further, the rotation cycle of the cylinder that repeats the selection of the knitting needles 54-154 can be changed. Further, the knitting needles 54 of the needle bed A can be selected at wider intervals than the 1:1 needle selection. Alternatively, all knitting needles 54 of needle bed A can be selected, except for those in positions corresponding to the selected needles 154 in opposite needle bed B. A connecting bridge can also be created by knitting one or more stitches on the opposite needle bed B. A special stitch interlacing method is implemented,
Alternatively, the knitting needles 54-154 can be deactivated in the longitudinal portion of the connecting region 52 adjacent to the cutting line. Further, the method of the present invention can be applied to each knitted pipe body 5.
It can also be applied when using a large number of feeds. All the above-mentioned variations are within the spirit of the invention.

[Brief explanation of the drawing]

1, 2 and 3 are diagrams showing a needle selection method according to a preferred embodiment of the method of the present invention, and FIG.
Figures 5 and 6 are diagrams showing connections obtained between knitted pipe bodies by the needle selection method shown in Figures 1 to 3, respectively, and Figures 7a, b, and c show two connections. 8, 9, and 10 are enlarged views showing examples of interlacing at connection points between knitted pipe bodies, respectively, by the needle selection methods shown in FIGS. 1, 2, and 3. FIG. 11 is a front view of the panty portion of the product. 1 to 32...Needle position, 54,154...Needle, 5
6...Feed, 59...Bridge, 50...Panty stocking, 51...Panty club, 52
...Connection area, 62... Cutting line.

Claims (1)

[Claims] 1. Pantaste knitting product 50 by continuous processing movements in a knitting machine having two needle beds and at least two yarn feeds, one for each needle bed.
In this method, when knitting one of the two knitting tube bodies 57A-57B inside the other on two needle beds, the panty portion 51 of the product 50
longitudinal connection section 52 of length substantially corresponding to
along the two tubular fabrics are interconnected, and a longitudinal separation cut is carried out along the substantial center line of said connecting section 52, reducing the section 52 connecting the two knitted tubes 57A-57B. The knitting needles 54 of a predetermined portion selected at substantially regular intervals on one needle bed A and the knitting needles 154 of a part of the other needle bed B are used to knit with one feed. The yarn 55 is knitted, and the selected knitting needle 54 has its own needle head and passes at the same level as each sinker so as not to pick up the yarn. Opposed needle beds B configured to knit threads with stitches in a threaded tubular fabric
The corresponding knitting needles 154 form a connecting bridge 59, and the selected needle 54 passes through one course at the same level as the sinker without picking up the thread, and the knitting needle 54 picks up the thread in the next course to form a stitch. 1. A method for making pantyhose trousers by continuous working movements on a knitting machine with two needle beds, characterized in that it is carried out as follows. 2. A knitting machine with two needle beds according to claim 1, wherein the needle selection carried out in one stitch course is repeated in the same wale after at least one normal stitch course. The above method of knitting the pantyhose packing product 50 by continuous processing motion. 3. Two needle beds according to claim 1, characterized in that the needle selection carried out in one stitch course is repeated in the next course, but offset by at least one stitch wale. A method of knitting a pantyhose tucking product 50 by continuous processing motions on a knitting machine. 4 For the area 52 connecting the two knitted tube bodies 57A-57B, after interposing at least one stitch course, the same needle selection 15 is applied on one needle bed.
4. A method according to any one of claims 1 to 3, characterized in that step 4 is repeated. 5. The method according to any one of claims 1 to 4, characterized in that not only the position but also the number of knitting needles 154 selected on one needle bed vary with stitch courses at regular intervals. 6 Needle selection 5 of two knitted tube bodies 57A-57B connection area 52 performed for one feed 56
6. A method according to any one of claims 1 to 5, characterized in that 4-154 is repeated in reverse for its feed in opposing needle beds. 7. A method according to any one of claims 1 to 6, characterized in that the connecting courses comprising the connecting bridges 59 are spaced apart from each other. 8 with opposed needle beds, and by at least two thread feeds 56, one for each needle bed A-B.
In a knitting machine for knitting several concentric tubular fabrics, for connecting the fabric tubes,
At least one of the two yarn feeds is used, and a needle arc of a width corresponding to the connecting area 52 is used, and the knitting machine is configured to use, in the connecting area 52, every N needles of the knitting needles 54 of the corresponding needle bed. A corresponding knitting needle 154 is selected so that one needle passes at the same level as each sinker without taking up thread at the needle head, and is aligned with the knitting needle 54 and placed on the opposite needle bed.
The connecting bridge 5 is knitted by knitting yarn together with the stitches of the tubular fabric knitted by the knitting needles 54.
9, and the needle selection is carried out in such a way that the knitting needle 54, which passes through the same level as the sinker without picking up the thread, picks up the thread in the next course to form a stitch. Machine. 9. Needle selection is carried out one stitch at a time every N stitches and is changed in subsequent courses by moving N-x stitches, where N is preferably equal to 5 and N-x
Knitting machine according to claim 8, characterized in that is equal to 3.