The weave structure of a lace fabric

Abstract

This invention discloses a fabric structure for lace trim, including Jacquard combs JB1 and JB2 for creating Jacquard patterns, weft-inserting combs GB2 and GB3 for weft-inserting spandex, and ground combs GB4 and GB5 for weaving the lace effect. Furthermore, Jacquard comb JB1 is also used for a loosening process, and Jacquard comb JB2 is also used for an edge-protecting process. This invention enables warp knitting machines with non-embellished yarn combs to weave lace trim, expanding the application range of warp knitting machines with non-embellished yarn combs, such as the RSJ model. Utilizing the easy-to-loosen characteristic of the loose yarns on Jacquard comb JB1 in the reverse weaving direction, each lace trim is cleanly separated, further ensuring the cleanliness of the lace effect. In addition, it better ensures that elastic yarn bobbins are smoothly woven into yarn bobbins on the Jacquard combs.

Description

Technical Field

[0001] This invention relates to the field of fabric weaving equipment technology, specifically to the structure of a lace fabric. Background Technology

[0002] Jaw lace fabric is a type of lace fabric. The term "jaw" generally refers to the effect created by using patterned yarn (i.e., edge yarn) to form protruding, tooth-like patterns along the edge of the lace. Currently, the weaving of jaw lace fabric typically utilizes a multi-comb warp knitting machine with multiple yarn guides. To create a jaw effect on lace, at least four yarn guides are needed: two for weaving the jaw effect and two for protecting the base of the jaws.

[0003] However, warp knitting machines with plain yarn guide bars, such as the RSJ model (e.g., the German Karl Mayer RSJ5 / 1EL 28E warp knitting machine), cannot weave the lace fabrics that can be woven by multi-comb warp knitting machines, thus limiting the application range of warp knitting machines with plain yarn guide bars, such as the RSJ model. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides a fabric structure for lace trim, which can solve the above-mentioned technical problems.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a fabric structure for jacquard lace, comprising: jacquard combs JB1 and JB2 for making jacquard patterns, weft-inserting combs GB2 and GB3 for weft-inserting spandex, and ground combs GB4 and GB5 for weaving jacquard effects; in addition, jacquard combs JB1 are also used for unraveling processes, and jacquard combs JB2 are also used for edge protection processes.

[0008] Preferably, the Jacquard comb JB1 has a first Jacquard needle for the unraveling process in each flower width cycle.

[0009] Preferably, the JB2 jacquard comb has two second jacquard needles for edge protection within each flower width cycle.

[0010] Preferably, the first Jacquard needle is pierced with loose silk.

[0011] Preferably, the second jacquard needle is threaded with edge-protecting yarn.

[0012] Preferably, both the loose yarn and the selvage yarn are fed through a yarn bobbin active warp feeder.

[0013] Preferably, the yarn bobbin active feeding device includes a motor, two drive rollers and a yarn bobbin. The motor is connected to one of the drive rollers. Both drive rollers are equipped with drive gears. The two drive gears are connected by a drive belt. A support rod is provided between the two drive rollers. The yarn bobbin is rotatably mounted on the support rod. Both sides of the yarn bobbin are in contact with the two drive rollers respectively.

[0014] Preferably, the unraveled yarn is made of nylon bright yarn.

[0015] Preferably, the edge protection yarn is made of nylon-spandex hollow-wrapped yarn.

[0016] Preferably, the edge yarn of the lace fabric is made of high-elastic nylon yarn.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a structure for a lace fabric with a serrated edge, which has the following beneficial effects: (1) The present invention makes full use of the existing combs of warp knitting machines with no patterned yarn combs, such as the RSJ model: using the ground comb GB4 and ground comb GB5 to weave the serrated edge, and using the Jacquard comb JB2 to protect the root of the serrated edge, preventing the serrated edge from slipping in the subsequent process, thereby enabling warp knitting machines with no patterned yarn combs to weave lace fabric with a serrated edge, and improving the application range of warp knitting machines with no patterned yarn combs, such as the RSJ model; (2) using the Jacquard comb JB1 to perform the unraveling process, that is, ...2 to protect the root of the serrated edge, preventing the serrated edge from slipping in the subsequent process, thereby enabling warp knitting machines with no patterned yarn combs to weave lace fabric with a serrated edge, and improving the application range of warp knitting machines with no patterned yarn combs, such as the RSJ model; Using the unraveling properties of the Jacquard comb JB1 in the reverse weave direction, each lace trim is cleanly separated. Compared to the traditional cutting process, the unraveling separation method has the following advantages: After separation, the trim is very clean with virtually no waste residue, while the traditional cutting process always leaves residual fuzz, resulting in unclean trim. The unraveling separation method greatly improves the efficiency of lace separation, increasing efficiency by at least 50% compared to the traditional cutting separation method. In addition, the unraveling separation method avoids the trim being pulled by the external force of the cutting machine, resulting in a more exquisite finish on the trim. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the lace fabric of the present invention;

[0020] Figure 2 This is a schematic diagram of the yarn bobbin active warp feeding device of the present invention installed on a warp knitting machine;

[0021] Figure 3 This is a schematic diagram of the active warp feeding device for yarn bobbins of the present invention.

[0022] The numbers in the diagram are: 1. Unraveling yarn, 2. Selvedge yarn, 3. Edge yarn raw material, 4. Motor, 5. Drive roller, 6. Yarn bobbin, 7. Drive belt, 8. Yarn bobbin active warp feeding device, 9. Warp knitting machine. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] This invention provides a structural design for a jacquard lace fabric, comprising: jacquard combs JB1 and JB2 for creating jacquard patterns, weft-inserting combs GB2 and GB3 for weft-inserting spandex, and ground combs GB4 and GB5 for creating the jacquard effect. Furthermore, jacquard comb JB1 is also used for the unraveling process of separating adjacent lace, and jacquard comb JB2 is also used for the edge-protecting process. It should be noted that the aforementioned jacquard combs, weft-inserting combs, and ground combs are existing combs on warp knitting machines without patterned yarn combs, such as the RSJ model (a warp knitting machine manufactured by Karl Mayer in Germany).

[0025] The aforementioned Jacquard combs JB1 and JB2 are used to create Jacquard patterns. Since there is no additional ground comb forming loops, the Jacquard combs need to form loops in each row while also taking into account the requirements of the pattern. Therefore, the Jacquard combs preferably adopt a pad-like structure.

[0026] In each lace width cycle, the Jacquard comb JB1 has a first Jacquard needle for a loosening process. The first Jacquard needle is threaded with loosening yarn 1, which follows a straight knit chain trajectory. This loosening yarn 1 crosses the lace yarn of the ground combs GB4 and GB5, connecting two adjacent lace edges together. Further, after a series of finishing processes for the lace fabric, including fabric inspection, degreasing, pre-setting, dyeing, and re-setting, the loosening yarn on the Jacquard comb JB1, with its easy loosening characteristic in the reverse knitting direction, can cleanly separate each lace edge. Preferably, the loosening yarn is made of nylon bright yarn, preferably 140D / 48F 300 twist, to prevent single filaments from slipping out. This loosening yarn, using the reverse loosening characteristic of the straight knit chain, is used to separate adjacent lace edges. This loosening separation method completely solves the tail yarn problem caused by traditional cutting and separation, maximizing the aesthetic appearance of the lace, resulting in a clean, clear, and very delicate lace.

[0027] The Jacquard comb JB2 has two second Jacquard needles within each pattern width cycle for edge protection. The second Jacquard needles are threaded with edge protection yarn 2. Preferably, the edge protection yarn is made of E20D+ND20D / 7F nylon-spandex loose-wrapped yarn (nylon-spandex single-wrap yarn). The spandex in the loose-wrapped yarn retracts and locks the feeder, utilizing the elasticity of the wrapping yarn itself to firmly lock the root of the yarn used as the feeder, preventing slippage of the feeder during subsequent processing. Therefore, it is called edge protection yarn or binding yarn. By threading the elastic edge protection yarn 2 through the two second Jacquard needles on the Jacquard comb JB2, the edge yarn material 3 passing through this wedge is locked in place.

[0028] Preferably, both the loose yarn 1 and the selvage yarn 2 can be fed through the yarn bobbin active feeding device 8. The yarn bobbin active feeding device 8 is located at the front end of the warp knitting machine 9, so that the loose yarn and the selvage yarn can be directly woven on the machine in the form of yarn bobbins, ensuring a stable output of yarn bobbin feed and better ensuring the smooth weaving of the yarn on the Jacquard comb. The selvage yarn is fed through the yarn bobbin active feeding device, which can lock the edge material with stable tension and better ensure that the edge is not pulled out of shape in the finishing process.

[0029] Specifically, the active warp feed device 8 includes a motor 4, two drive rollers 5, and a yarn bobbin 6. The motor 4 is connected to one of the drive rollers 5. Both drive rollers 5 are equipped with drive gears, which are connected by a drive belt 7. A support rod is provided between the two drive rollers, and the yarn bobbin 6 is rotatably mounted on the support rod. Both sides of the yarn bobbin 6 are in contact with the two drive rollers 5 respectively. The motor 4 drives the drive rollers 5 to rotate, thereby driving the yarn bobbin 6 to rotate, thus achieving active warp feed of the yarn. The motor speed is linearly matched with the warp knitting machine speed, allowing loose yarns and selvage yarns to be directly knitted on the machine in the form of yarn bobbins, and the warp feed parameters can be adjusted linearly.

[0030] Preferably, the edge yarn material 3 (i.e., edge yarn, edge pattern yarn) of the edge lace fabric is made of 280D / 48F nylon high-elastic yarn. Ground combs GB4 and GB5 are used to weave the edge yarn material 3 to create the edge effect, that is, ground combs GB4 and GB5 are used as edge padding yarns, following a changing trajectory according to the edge effect. In addition, preferably, the end of the edge yarn material 3 is connected to the loose yarn 1 at the crest position. The loose yarn loops pull the left and right edge pattern yarns back together, so that the edge can maintain a certain raised height.

[0031] In addition, the aforementioned Jacquard combs JB1 and JB2 preferably use 30D / 12F or 40D / 12F semi-dull chemical fiber filaments to make Jacquard patterns, with the entire fabric threaded except for loose threads and edge protector yarns; the basic chain number of Jacquard comb JB1 is: 1-0 / 1-2 / / , and the basic chain number of Jacquard comb JB2 is: 1-2 / 1-0 / / .

[0032] Furthermore, weft guide bars GB2 and GB3 are preferably made of 140D LYCRA material, with alternating thread-and-open and open-and-thread patterns on GB2 and GB3, respectively. The basic chain number of weft guide bar GB2 is 1-1 / 0-0 / / , and the basic chain number of weft guide bar GB3 is 0-0 / 1-1 / / .

[0033] Compared with the prior art, the present invention provides a structure for a lace fabric with the following advantages: (1) The present invention makes full use of the existing combs of warp knitting machines with no patterned yarn combs, such as the RSJ model: using the ground comb GB4 and ground comb GB5 to weave the lace, and using the Jacquard comb JB2 to protect the root of the lace, preventing the lace from slipping in the subsequent process, so that warp knitting machines with no patterned yarn combs can also weave lace fabric with lace, improving the application range of warp knitting machines with no patterned yarn combs, such as the RSJ model, greatly enriching the diversity of RSJ products, and making RSJ lace more widely used in the underwear field, etc., improving the applicability of RSJ products; (2) using the Jacquard comb JB1 to perform the unraveling process, that is, using the easy unraveling characteristics of the unraveling yarns on the Jacquard comb JB1 in the reverse weaving direction, to cleanly separate each lace. Compared with the traditional cutting process, the unraveling separation method has the following advantages. Results: After separation, the teeth are very clean, with almost no waste residue. In contrast, the traditional cutting process always leaves residual fuzz after cutting, resulting in unclean teeth. Through the separation method of detachment, the separation efficiency of lace is greatly improved, which is at least 50% higher than the traditional cutting separation method. In addition, the detachable separation method avoids the teeth being pulled by the external force of the cutting machine, making the teeth part more exquisite. (3) The single needle controllable technology of Jacquard combs is used to solve the problem of tooth slippage. (4) By setting up a yarn tube active warp feeding device, the detached yarn and edge yarn can be directly woven on the machine in the form of yarn tubes, ensuring the stable output of yarn tube feeding amount and better ensuring the smooth weaving of yarn on Jacquard combs. (5) This invention can make the various physical indicators of the lace fabric of teeth reach the following standards: longitudinal elasticity: 80% to 150%; weft elasticity: 60%; bursting: above 120KPA; warp and weft shrinkage rate: within 3%.

[0034] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. The structural structure of a lace fabric, characterized in that, include: Jacquard combs JB1 and JB2 are used for creating jacquard patterns; weft-inserting combs GB2 and GB3 are used for weft-inserting spandex; and ground combs GB4 and GB5 are used for creating weft patterns. In addition, the jacquard comb JB1 is also used for the unraveling process, and the jacquard comb JB2 is also used for the edge protection process. The Jacquard comb JB1 has a first Jacquard needle in each pattern width cycle to perform the unraveling process. The first Jacquard needle is threaded with unraveling yarn. The unraveling yarn follows a straight knitting chain track. The unraveling yarn passes through the cross of the cardigan yarn of the ground comb GB4 and ground comb GB5 respectively, connecting two adjacent laces together. Furthermore, after a series of finishing processes for the cardigan lace fabric, including fabric inspection, degreasing, pre-setting, dyeing, and re-setting, the unraveling yarn on the Jacquard comb JB1 is easily unraveled in the reverse knitting direction, and each lace is cleanly separated. The Jacquard comb JB2 has two second Jacquard needles in each flower width cycle for the edge protection process.

2. The fabric structure of the lace fabric according to claim 1, characterized in that: The second jacquard needle is threaded with edge-protecting yarn.

3. The fabric structure of the lace fabric according to claim 2, characterized in that: Both the unraveling yarn and the selvage yarn are fed through a yarn bobbin active warp feeding device.

4. The fabric structure of the lace fabric according to claim 3, characterized in that: The yarn bobbin active feeding device includes a motor, two drive rollers, and a yarn bobbin. The motor is connected to one of the drive rollers. Both drive rollers are equipped with drive gears, which are connected by a drive belt. A support rod is provided between the two drive rollers. The yarn bobbin is rotatably mounted on the support rod, and both sides of the yarn bobbin are in contact with the two drive rollers respectively.

5. The fabric structure of the lace fabric according to claim 3, characterized in that: The unraveled yarn is made of nylon bright yarn.

6. The fabric structure of the lace fabric according to claim 3, characterized in that: The edge protection yarn is made of nylon-spandex hollow-wrapped yarn.

7. The fabric structure of the lace fabric according to claim 1, characterized in that: The lace fabric is made of high-elastic nylon yarn.

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