TW201303101A - A process for regulating a size of knitted articles under production in circular knitting machines for knitwear or hosiery - Google Patents

Abstract

A process for regulating the size of textile articles under production on circular knitting machines for knitwear or hosiery, comprising steps of: predisposing at least a circular knitting machine (1) for knitwear or hosiery; defining a knitted article (6) to be produced on the knitting machine (1); sub-dividing the knitted article (6), defining at least a plurality of consecutive knitted zones of the knitted article (6); activating a production program of the knitted article (6); producing the knitted zones of the knitted article (6) in sequence, maintaining a tension of the yarn (9) substantially constant; detecting a plurality of yarn consumption data (9) per knitted zone (6a, 6b) at each feeding position (10) of the machine and at the relative passive yarn feeder (8); comparing the plurality of yarn consumption data (9) per knitted zone (6a, 6b) with a respective plurality of reference values for yarn consumption (9) per knitted zone (6a, 6b), such as to obtain a respective plurality of comparable results; determining a plurality of corrective values of the position of the stitch cams (7) on the basis of the respective plurality of compared results, if the compared results are greater than respective predetermined tolerance thresholds; automatically displacing the stitch cams (7), according to the plurality of corrective values, such as to reduce the difference between the plurality of yarn consumption data (9) per knitted zone (6a, 6b) and the plurality of yarn consumption reference values (9) per knitted zone (6a, 6b).

Description

Method for adjusting the size of knitwear in production on a circular knitting machine for knitwear or hosiery Field of invention

The present invention relates to a method for adjusting the size of a knitwear in production on a circular knitting machine for a knitwear or hosiery. The invention also relates to a method for adjusting and balancing the stitches of a fabric produced by a circular knitting machine for a knitwear or hosiery (ie for adjusting and balancing textiles or knitting produced at various yarn feeding positions or points of the machine) The size of the pins of the product). The invention also relates to a circular knitting machine for a knitwear or hosiery configured to initiate the method. Modern circular knitting machines or circular knitting machines are highly automated and operate with specific knitting programs, enabling the automatic production of many types of knitwear, including hosiery products, seamless knitwear production and the like. As is known, the manufacture of these products is influenced by a number of factors, such as the configuration of the knitting machine, the type of components mounted on the knitting machine, the type of yarn used, the wear condition of the various components, environmental conditions, and the like. It is therefore important to control the quality of the fabric of the knitwear product by detecting appropriate parameters, avoiding the disadvantages of forming on the article itself that may result in loss of quality and defective products. Accordingly, it is known to monitor certain basic parameters by controlling the amount of yarn supplied by each yarn feeder during the production of knitwear, typically the tension or grammage of the yarn supplied to the needle by a dedicated yarn feeder, and The amount of yarn that is lost at each yarn feed position to the needle during the production process. For example, the prior art teaches detecting yarn tension values and yarn speed or loss values by using dedicated sensors, and thus manually adjusting some operating parameters of the machine, such as the speed of the yarn, the tension of the yarn, or the position of the looping triangle, The looping triangle acts on the needle (needle) The needle of the cylinder) to determine the size of the resulting stitch.

Background of the invention

For example, the following patent documents LPL EP 2,186,932, Fukuhara, US Pat. No. 5,174,133, and US Pat. No. 5,511,392, the disclosure of U.S. Pat. Some knitting parameters are controlled and adjusted to prevent defects in the product. However, the known patent solutions indicated above have some disadvantages. First, some known solutions are somewhat inaccurate in detecting some of the operating parameters of the machine, for example, when detecting the amount of lost yarn, which is typically based on rotation such as a reel or a rotating wheel. Estimated by the number of turns of the element, wherein the yarn is wound one or more turns (in one or two turns) on the reel or rotor in the yarn feeder, thereby due to the yarn and the rotating element or Sliding between spools results in possible inaccuracies. These rotating bobbin yarn feeders are only suitable for some limited types of yarns, such as elastic yarns (such as spandex or stretch cotton) or non-clad yarns (such as bare spandex or bare stretch cotton). . Although the rotating bobbin device is suitable for conveying these types of yarns, it is not possible to reliably detect the yarns lost by the various yarn feeding positions of the machine, precisely because they change speed due to different internal knitting operations on the same manufactured product. The step is subject to sliding. Rotating spool devices are not suitable for conveying non-elastic yarns, such as natural fibers, rayon, and nonwoven synthetic fibers, precisely because of the sliding caused by the very fast acceleration phase necessary to maintain the program tension of the yarn delivery. At this In some cases, if a single coil is severely slid while the yarn is wound around the bobbin, and if there is more than one coil to reduce slippage, the probability of yarn breakage and slippage from the machine needle will increase. In any event, the detection of the amount of yarn input is inaccurate and rather unreliable, so the resulting adjustments will also be inaccurate and potentially destructive. A further disadvantage of known solutions is that they typically involve contextual regulation of reciprocally-connected parameters with complex and sometimes unreliable systems. A further disadvantage of the known solutions is that they can only locally automate the adjustment of the stitches of the fabric produced, since in order to fine-tune the operating parameters it is often necessary to supervise and intervene some of the professional operators. A further disadvantage of the known solutions is that they require periodic preparations for machine adjustments by performing specific specific adjustment and balancing operations in which the sample knit is considered to have a uniform stitch structure, and are not capable of production in knitwear. The function of the machine is effectively controlled and regulated during the process, so it is not possible to effectively detect changes in production due to environmental conditions or other parameters. Moreover, known technical solutions are often complex and expensive because they require a large number of additional components to be installed on the machine to enable control and adjustment programs. Equally important, it is important to emphasize that known solutions are not capable of efficient production management of multiple knitting machines in a production center, whereby each machine has to be manually set by the operator and adjusted in a substantially automatic manner. Moreover, with known solutions, it is generally not possible in the production to automatically ensure sufficient accuracy and uniformity of the stitches of the obtained knitwear.

Summary of invention

It is an object of the present invention to obviate one or more of the above disadvantages. It is an object of the present invention to provide a method which is capable of producing knitwear in a high quality substantially flawless manner and/or capable of reducing production waste. Another object of the present invention is to provide a method of providing control and adjustment that is effective and efficient in the manufacture of knitwear. Another object of the present invention is to provide a method of adjusting the fabric of a knitwear that is as automated as possible and that minimizes operator intervention. Another object of the present invention is to provide a method of obtaining a very high dimensionally uniform product between various knitwear produced at different times or under different operating conditions on the same machine and/or on multiple machines. Another object of the present invention is to provide a method of ensuring accurate and reliable control and adjustment of the size of a knitwear produced simultaneously on one or even more knitting machines. Another object of the present invention is to provide a method for producing a knitwear on a plurality of circular knitting machines, which also has different technical characteristics, is simple, fast, and as automated as possible. Another object of the present invention is to obtain a method which is user friendly and thus facilitates the work of the operator who is controlling the production of knitting, especially in the case where there are multiple machines for production. Another object of the present invention is to obtain a method capable of reducing the number of personnel required to control production, especially in factories with many knitting machines, which method can thus reduce the number of operators used to control even a large number of knitting machines . Another object of the present invention is to provide a method and a knitting machine configured to perform the method, and which is simple, robust, and relatively economical to implement. Another object of the present invention is to disclose a high safety standard that guarantees operation. method. These and other objects which are fully presented in the following description are substantially achieved by a method and a circular knitting machine as defined in accordance with the appended claims, any combination thereof, and/or in accordance with one or more of the following aspects. In another aspect thereof, the invention relates to a method for regulating and balancing the production of a circular knitting machine for a knitwear or hosiery, alone or in combination with any of the scope of the claims or the aspects indicated herein below, including pre-arranging at least A circular knitting machine for a knitted garment or a hosiery, the circular knitting machine comprising at least: a support structure; a syringe rotatably mounted in the support structure; a plurality of knitting supported by the cylinder, knitting a shaft parallel to the cylinder Movable for producing a knitted fabric; a plurality of looped triangles operatively acting on the knitting and selectively movable separately so that each of the stitches produced by the knitting needles at the yarn feeding position is changed Dimensions, each of the looping triangles being independent of each other, each of the plurality of first passive feeders or passive fixed drum feeders being operatively operable to deliver the yarn unwound from the stationary drum to the corresponding a yarn feeding position (10) and a knitting needle at a corresponding looping triangle of the plurality of stitching triangles; a control device for controlling the operation of the knitting machine; and an electric electronic device connected to the control The apparatus is operatively operative to control operation of the plurality of components of the knitting machine and to detect a plurality of operating parameters of the operation of the knitting machine; defining a sample-type balanced knit portion to be produced on the knitting machine, the balanced knit portion Having a substantially uniform structure suitable for determining the same yarn loss at each of the yarn feeding positions or the yarn feeding positions of each of the yarn feeders in the production of the plurality of first fixed drum passive yarn feeders; Producing a balanced knit portion under a predetermined number of full rotations, using a brake device and/or a yarn tensioning device to maintain a substantially constant tension of the yarn delivered to the needle, And/or automatically maintain a stylized grammage of the yarn tension; from the respective activation and end signals of the balance knit portion, detecting a plurality of yarn loss data for the yarn used to form the balanced knit portion, Corresponding yarn loss data are detected at each yarn feed position of the machine and/or at a relevant passive yarn feeder in a plurality of first passive yarn feeders; relevant to the respective yarn feed position of the machine and/or correspondingly The yarn loss data associated with the yarn feeder, or the average value of each yarn loss data under a single full rotation of the syringe, is compared with a single common yarn loss reference value to obtain a corresponding comparison result; if the corresponding yarn feeder corresponds If the comparison result exceeds the predetermined tolerance threshold or is outside the predetermined tolerance range, the second algorithm is used to determine the correction value of the position of each circle of the triangle based on the comparison result; and the respective circle forming triangles are respectively shifted according to the relevant correction value. This reduces the difference between the corresponding yarn loss data of the respective yarn feeder and the yarn loss reference value. In another aspect, in conjunction with any one of the scope of the claims or the aspects described below, the present invention also relates to a method wherein a step of producing a portion of a knitwear, a step of detecting a plurality of yarn loss data, and comparing each yarn loss The steps of the data, the step of determining the correction value of the position of each of the circled triangles, and the step of shifting the respective circle forming triangles are cyclically performed a plurality of times until the comparison result is smaller than the predetermined tolerance of all the passive drum feeders in operation. threshold. In another aspect, in conjunction with any one of the scope of the claims or the aspects described below, the present invention relates to a method comprising the step of making it impossible to obtain a fabric that is produced or impossible to obtain correctly when a predetermined number of cycles of operation When the size of the knitwear, an alarm signal is issued or the knitting machine is stopped. In another aspect, in conjunction with any one of the scope of the claims or the aspects described below, the present invention also relates to a method comprising the steps The correction values corresponding to the respective knitting zones are stored and the stored correction values are used to automatically shift the loop triangles before the respective knitting zones of the subsequent respective knitwear are produced on the same knitting machine or on another knitting machine. In yet another aspect, in conjunction with any one of the scope of the claims or the aspects described below, the present invention also relates to a method wherein the knitting machine further comprises a needle plate and associated with an additional knitting needle operatively acting on the needle plate An additional looping triangle, wherein the needle plate is operatively cooperated with the syringe for the production of knitted material and/or knitwear, the method further comprising the step of shifting the position of the additional looping triangle, the pair of needles The steps performed by the looped triangles on the barrel are similar and associated for maintaining the relationship between the stitches produced by the syringe and the stitches produced by the needle plate.

Simple illustration

Further features and advantages will be more apparent from the detailed description of the preferred, but non-exclusive embodiments of the invention, in which: FIG. 1 schematically illustrates a garment or hosiery according to an embodiment of the present invention. Circular knitting machine; Figure 2 shows a plurality of knitting machines of the type shown in Figure 1, the plurality of knitting machines shown being operatively connected to each other, provided with an external processor for use via a wired network and/or wireless Figure 3 is a schematic view of some of the components of the knitting machine of Figure 1, particularly showing details relating to the yarn reel, the yarn feeder and the corresponding yarn feed position, wherein the yarn is in the corresponding yarn feed. The position is supplied to the moving needle of the cylinder of the knitting machine; Figure 4 is the detail related to the yarn feeding position of the knitting machine, wherein the mobile weaving The needle moves vertically in the cylinder according to the motion determined by the associated looping triangle; Figure 5 is a portion of the knit fabric having a regular structure; Figure 6 is an example of a knitwear subdivided into two consecutive knit zones; The method for adjusting the size of a knitwear in production on a circular knitting machine according to an embodiment of the present invention is shown; FIG. 8 is a variant of the method shown in FIG. 7; FIG. 9 is another method of the method shown in FIG. Variations; and Figure 10 is an embodiment of a preliminary step of adjusting and balancing the production of a circular knitting machine.

detailed description

Referring to the drawings, 1 denotes a circular knitting machine for a knitwear or a hosiery, the circular knitting machine comprising at least one support structure 2, a syringe 3 rotatably mounted in the support structure 2, and a plurality of supports supported by the syringe 3. The knits 4, knits 4 are moved parallel to the axis of the cylinder 3 for the production of knits and/or knits 6.

In this context, the term "circular knitting machine for knitwear or hosiery" is used in circular knitting machines suitable for the production of knitwear articles, seamless articles and/or hosiery, with multiple yarn feeding positions and corresponding formations. Circle triangles, which can be adjusted automatically and separately (i.e., each of the looping triangles in each predetermined knitting zone of the knit product or knitwear) and can also be associated (i.e., all the looping triangles simultaneously and The same way) adjustment. For example, these knitting machines can be single-sided or double-sided (ie, using a needle plate or a double syringe). The definition of a circular knitting machine for a knitwear or hosiery according to the object of the present invention does not include the continuous production of fabrics dedicated to continuous knits, i.e., these circular knitting machines for continuous production of fabrics. Continuous or The coherent machine does not consider the automatic independent adjustment of the loop triangles, wherein the loop triangles are manually adjusted during the initial configuration phase of the machine for production and are then only adjustable in relation to each other, not independently of each other. The continuous knitting machine is also provided with an active (or active) yarn feeder that provides the same number of yarns at each yarn feeding position of the machine. These yarn feeders are typically activated by the rotation of a cylinder of a knitting machine with a dedicated moving device to move directly and supply all of the yarns at the same speed, which speed is associated with the rotational speed of the cylinder. Moreover, these continuous knitting machines are typically large diameter, i.e., their cylinders are larger than 30 inches in diameter. The circular knitting machine 1 further comprises a plurality of looping triangles 7, wherein the looping triangles 7 are operatively applied to the knitting 4, and in particular to the respective heels 4a of the knitting needles 4, and optionally The movement is such that the movement of the knitting is changed, and thus the size of the stitch 5a produced by the knitting needle 4 is changed. In more detail, the looping triangle 7 is adjustable in height in a known manner (in the direction indicated by the arrow 14 on Figure 4). The circular knitting machine 1 comprises a plurality of first fixed drum passive (or passive or fixed) yarn feeders 8, wherein each of the yarn feeders is operatively operated to convey the yarn 9 unwound from the stationary drum to the corresponding The yarn feeding position 10 and at least the corresponding knitting needle 4 at the looping triangle 7. Each of the yarn feeders 8 receives the yarn 9 from the corresponding reel 13 and supplies it to the knitting needle 4 at the yarn feeding position 10. For example, the passive yarn feeder 8 and the fixed drum may be of the type exemplified in the patent documents EP 0 707 102 and EP 1335054 of the LGL, wherein at least the structure of the yarn feeder 8 , the braking device for maintaining the tension of the yarn 9 , and The manner in which the number of yarns used is measured is incorporated herein by reference. The word "passive" means that the yarn feeder operates in a manner that is considered to be negative in the field of knitting, ie in such a way that it is based on the components of the knitting machine. The requested yarn for the yarn is unwound from the yarn feeder. Such a passive yarn feeder does not actively feed the yarn to the needle, but simply allows the yarn to be unwound from, for example, a spinning spool or from a stationary drum when pulled by the machine's needle. The phrase "fixed drum" means that the drum wound with the yarn is stationary during the unwinding of the yarn for supplying the knitting machine (while the drum itself can be triggered to rotate to take the yarn from the corresponding reel). The fixed drum passive device is capable of best performing the method of the present invention without the slippage that occurs on numerous types of yarns (eg, natural yarns, artificial yarns, woven parallel synthetic yarns, and clad elastic yarns). Phenomenon, however, it is not suitable for conveying non-cladding elastic yarns (bare spandex or bare stretch cotton). The circular knitting machine 1 may also comprise a plurality of second passive yarn feeders or other types having a rotating bobbin (not shown for the well-known type), the second passive yarn feeder being particularly suitable for conveying cladding or elastic rubber bands An elastomer elastic yarn, which can be conveyed together with the yarn 9 to a knitting machine, wherein the yarn 9 is used to form a knitwear having both the yarn 9 and the elastic or bare yarn. The circular knitting machine 1 further comprises a control device 11 for controlling the operation of the knitting device 1 and an electric electronic device 12, wherein the electric electronic device 12 is connected to the control device 11 and is operatively operated to control the various components of the knitting machine 1. A plurality of operating parameters are run and detected to detect the operation of the knitting machine 1. The knitting machine 1 may also comprise a needle plate (not shown in the figures in view of the well-known type) which operatively cooperates with the syringe 3 for the production of knitted fabrics and/or knitwear 6, and related The additional looping triangle operatively acts on the additional needle of the needle plate. In a non-preferred embodiment of the invention, instead of the fixed drum passive yarn feeder 8, other types of yarn feeders 8 that are also suitable for their purpose may be used. For example, a quilt having a runner can be used in a plurality of first yarn feeders for carrying out the method of the invention Dynamic yarn feeders or other types only achieve a part of the object of the invention and are limited in measurement and very low in reliability. The above-described components of the knitting machine 1 and other conventional components are not described in detail herein because they are of a known type. According to the invention, the method for adjusting the size of a knitwear in production on a circular knitting machine 1 for a knitwear or hosiery comprises at least the following steps: defining (step A in Fig. 7) to be produced on the knitting machine 1 Knitwear, subdivided (B) knitwear 6 to be produced, thus defining a plurality of knit zones 6a, 6b, each knit zone corresponding to the knit material of the respective section, and being activated on the control device 11 of the knitting machine 1 (C) The production process of the knitwear 6 and thus the knitting zone. For example, Figure 6 shows two knitting zones 6a, 6b, but it is possible to define any number of knit zones so that the dimensions of the various parts of the knitwear can be controlled more and more precisely. As can be seen in Figure 6, each knitted zone 6a, 6b can be associated with a respective desired measurement, wherein the measured value is expressed in a determined unit of measure, for example, centimeters or inches. Accordingly, the measured values can be measured for the knitwear produced (involving each knit zone or knitwear). The effective value of the measured value can be correlated with the value of the yarn loss detected to form the corresponding knit zone or knitwear, and thus the correspondence between the measured value and the yarn loss is defined. Thus the user can set or modify the size of the knitwear or its particular knit zone by directly inserting the desired measurement under the selected unit of measure. The method for maintaining the dimensions of the present invention is also capable of maintaining the measured values of the knitwear 6 and/or each of the knit zones 6a, 6b substantially consistent with the set values. The method further comprises the step of sequentially producing (D) the knit zone of the knitwear 6 and maintaining the tension to the knit 4 yarn substantially constant by means of a braking device and/or a yarn tensioning device (not shown as is known in the art). Brake and / or yarn tension adjustment device suitable for production The weight of the stylized yarn tension can be automatically maintained during the period. The method further comprises the steps of: detecting (E) a plurality of yarn loss data 9 per knitted zone 6a, 6b, detecting the respective yarns of the machine between the respective starting knitted zones 6a, 6b and the ending knit zones 6a, 6b. The total number of yarns 9 used in the position 10 and the corresponding fixed drum passive feeders 8 or for the fixed drum passive feeders 8 in the production run are used to form the respective knitting zones 6a, 6b. The method further comprises the step of comparing (F) a plurality of yarn loss data 9 per knitted zone 6a, 6b with a corresponding plurality of yarn loss reference values 9 per knitted zone 6a, 6b such that a corresponding plurality of comparison results are obtained. The method further includes the step of determining (G) the loop triangle 7 by the first algorithm based on the respective plurality of comparison results if the comparison results exceed a corresponding predetermined tolerance threshold or are outside a corresponding predetermined tolerance interval Multiple correction values for the location. For example, the first algorithm may include calculating a percent displacement value, or other suitable calculation formula. For example, the correction value can be calculated by defining a single unitary displacement of the looping triangle 7 such that a plurality of each of the knitting zones 6a, 6b yarn loss data 9 and a corresponding plurality of knitted zones 6a, 6b The difference in the yarn loss reference value 9 is successively decreased, and the comparison and the correction are repeated by the cycle until the target condition that all the comparison results fall within the predetermined tolerance interval is gradually reached. Alternatively, the correction value can be calculated by defining a plurality of unit displacements of the circle triangle 7 to achieve the target condition in a single comparison cycle or a small number of cycles. In other cases, if there are cases of control that are performed periodically and frequently, several consecutive controls may be implemented until all of the comparison results fall within the tolerance interval. In addition, if there are several consecutive controls and there are periodic control cases, the target is not reached under the predetermined number of correction cycles (in the adjustment circle triangle 7) In the case of an alarm, an alarm signal can be issued or the knitting machine 1 can be turned off. The method further comprises the step of automatically shifting (H) the looping triangle 7 according to a plurality of correction values such that the plurality of yarn loss data 9 per knitted zone 6a, 6b and the corresponding plurality of knitted regions 6a, 6b are reduced. The line loss reference value 9 is the difference and therefore also maintains the specified measurement in centimeters or inches in each zone. In the variant shown in Figure 7, the step of adjusting the automatic shifting (H) yarn into the loop triangle 7 can be carried out before the production of the latter zone of the same knitwear 6 so as to be based on the detection of the immediately preceding zone The stitches generated in the subsequent area are adjusted. In a further variant shown in Fig. 8, the step of automatically shifting (H) the looping triangles 7 can be carried out before the production of the respective respective knitted areas 6a, 6b of the respective knitwear, so that the previous knitwear is based on The detection of the corresponding area of 6 precisely adjusts the production of each region of a subsequent knitwear. In this variant, unlike the previous variant, the displacement of the looping triangles 7 is carried out before the production of the respective knitting zones 6a, 6b based on the detected correction values, wherein the detected correction values are identical to the same knitwear The same or corresponding regions in the previous knitted regions 6a, 6b of 6 are related. In this variant, the method may further comprise the steps of: storing (I) correction values corresponding to the respective knit zones 6a, 6b, and including using the stored correction values for each of the respective knitwear in the production subsequent The respective knitting zones 6a, 6b are automatically displaced into a loop triangle 7 before. In the variant shown in Fig. 9, the step of adjusting the automatic shifting (H) yarn into the loop triangle 7 can be carried out immediately before the production of the subsequent corresponding knitwear, so that it is for example based on different regions of the preceding knitwear The average of the corrected corrections is taken to make a total correction from the next knitwear. In the method according to the invention it is also possible to detect or calculate a total yarn loss data 9 for each knit zone 6a, 6b corresponding to the amount of yarn 9 used, wherein the yarn used is used to form a corresponding Each of the knitting zones 6a, 6b of the total yarn loss of the fixed drum passive yarn feeder 8 operating in production. In this case, the total yarn loss data 9 is compared with the corresponding total yarn loss reference value per knitted zone 6a, 6b, so that a corresponding plurality of comparison results are obtained and a common correction is defined for each knitted zone 6a, 6b. value. Moreover, in this case, the step of shifting the loop forming triangle 7 is carried out by shifting all the stitching triangles 7 operating in production together or simultaneously according to the same common correction value. The method may also include a preliminary conditioning and balancing step (L) produced by the circular knitting machine 1, as shown in detail in FIG. According to an aspect of the invention, this preliminary adjustment and balancing step (L) produced by the circular knitting machine 1 can also be carried out on a circular knitting machine 1 of the type described above, independently of the above-mentioned use for adjusting the knitwear in production. The method of sizing thus essentially defines a method for adjusting and balancing fabrics produced by circular knitting machines for knitwear or hosiery. This preparatory adjustment and balancing step can be carried out prior to the production of the knitwear in order to balance the position of the loop forming triangle 7 to avoid the formation of defects or insufficient uniformity on the manufactured knitwear, and for adjusting the knitting in production as described above. The method steps of the size of the product are implemented before. Such a method for adjusting the size of the knitwear can also achieve the balance of maintaining the fabric obtained before. The preparatory adjustment and balancing step comprises the steps of: (M) a balanced knit sample portion 5 to be produced on the knitting machine 1, the balanced knit portion 5 having a substantially uniform structure suitable for passive transmission in a plurality of first fixed drums The same yarn 9 loss is determined at each of the production operations in the yarn feeder 8, for example, the details of the balanced knitted fabric portion 5 are shown in Fig. 5, wherein the horizontally arranged numbers 1 to 5 indicate vertical stitches. Columns or columns (or the order of vertical stitches, where each vertical stitch is produced by the corresponding knitting needle), the number 1 to 5 of the vertical row Successive stitch rows of the fabric are shown (each stitch is produced by yarn delivery 10 under a defined rotation of the cylinder 3). The preparatory adjustment and balancing step further comprises the steps of producing (N) the balance knitted fabric portion 5 by a predetermined number of full rotations of the syringe 3, and maintaining the tension of the yarn 9 delivered to the knitting needle 4 substantially constant by means of the brake and/or adjustment device 9, And between the corresponding balance knitted fabric portion 5 start signal and the balanced knitted portion end signal, the plurality of yarn loss data 9 used to form the balanced knitted portion 5 are detected; in the machine and the associated fixed drum passive yarn feeder 8 The corresponding yarn loss data 10 is detected (O) at each of the yarn feeding positions 10. The preparatory adjustment and balancing step further comprises the steps of: averaging the individual yarn loss data 9 of the respective yarn loss data 9 or the single full rotation of the syringe 3 associated with the respective yarn feeder 8 and a single common yarn loss reference value. Comparing (P) to obtain a corresponding comparison result; and if the corresponding comparison result of the corresponding yarn feeder 8 exceeds a predetermined tolerance threshold or falls outside a predetermined tolerance range, it is determined by the second algorithm based on the comparison result (Q) Correction value of the position of each stitching triangle 7. For example, the second algorithm may include calculating a percent displacement value, or other suitable calculation formula, for example, the correction value may correspond to a single step (the minimum displacement value of the circled triangle 7), wherein a plurality of successive adjustment cycles are performed until The desired balance is achieved in a single cycle (and therefore until the comparison falls within the tolerance threshold). Alternatively, the correction value may correspond to multiple steps for achieving the desired balance in a single cycle or a small number of cycles. In the case where the correction value is larger than the maximum predetermined correction value, or in the case where balance cannot be obtained in a predetermined number of cycles, an alarm signal may be issued, or the knitting machine 1 may be automatically turned off. The preparatory adjustment and balancing step further comprises the step of respectively shifting (R) each of the looping triangles 7 according to the associated correction value so as to reduce the corresponding yarn loss of the respective yarn feeder 8. The difference between the consumption data and the yarn loss reference value of 9. In all of the embodiments and the variants described above, the correction value of the position of each stitching triangle 7 or the position of each stitching triangle 7 may each correspond to a determined number proportional to the corresponding value of the comparison result. The minimum unit displacement, or may correspond to the minimum unit displacement of the looped triangle 7 for each comparison result. Moreover, at least the step of shifting each of the loop triangles 7 respectively may be performed a plurality of times until the or each comparison result is at a predetermined tolerance threshold of all of the fixed drum feeders 8 in operation. As shown in FIG. 10, the step of shifting (R) the circled triangle 7 may be performed cyclically by gradually shifting the circled triangle 7 with a continuous minimum unit displacement, or may be performed by performing the first shift and then executing the loop. Executing, the cycle includes the step of shifting from the production of the knitted portion to the stitching of the loop (from step N to step R). Once all of the detected values are caused to fall within the tolerance range, the stopping step (S) of the conditioning and balancing preliminary steps is performed, and the step of producing the knitwear can be continued. The method of the present invention may further comprise the step of issuing a (T) alarm when it is not possible to cause the or each comparison result to be below a predetermined tolerance threshold of all of the fixed drum feeders 8 in operation within a predetermined number of cycles. Or turn off the signal. The method may further comprise the step of determining a yarn loss reference value on the knitting machine 1 or the second knitting machine 1' by processing the plurality of yarns 9 loss data or the loss data per knitting area yarn 9 using a third algorithm. The yarn loss zone 6a, 6b yarn loss reference value or a plurality of yarn loss reference values per knitting zone 6a, 6b. For example, the third algorithm may include or by selecting an average or maximum value of the yarn loss data or the yarn loss data per zone, or by selecting the loss profile associated with the balance knit section 5 or the approved balance knitwear 6 Minimum value. The method may further comprise the step of receiving the yarn loss from the second knitting machine 1' on the knitting machine 1. The reference value, the yarn loss reference value per knitted zone 6a, 6b or a plurality of yarn loss reference values per knitted zone 6a, 6b, wherein the above values have been measured or calculated on the second knitting machine 1'. The method may further comprise the step of transferring the calculated or measured yarn loss reference value from the knitting machine 1 to at least the second knitting machine 1' or to the plurality of knitting machines 1', 1", the yarn per knitted zone 6a, 6b. a line loss reference value, or a plurality of yarn loss reference values per knitted zone 6a, 6b. According to the present invention, as shown in Figure 2, the step of receiving or transmitting a reference value can be automatically performed by the network 15, wherein the network The way 15 may be wired and/or wireless and may be local or connected to the internet or transmitted by means of a storage device continuously connected to the respective knitting machine 1, 1 ', 1" for transmission of each of the parties in question value. In a variant, the method may further comprise the step of automatically modifying the size of the knitwear 6 to enable the production of corresponding knitwear 6 having different sizes on a second knitting machine 1' different from the circular knitting machine described above.

In another variant, the method may further comprise the step of automatically modifying the size of the knitwear 6 such that a corresponding knitwear 6 having the same size can be produced on a second knitting machine 1' different from the circular knitting machine described above. In both variants, the step of automatically sizing may be performed by modifying the yarn loss reference value per knitted zone 6a, 6b or a plurality of yarns per knitted zone 6a, 6b measured or determined on the knitting machine according to a fourth algorithm. The line loss reference value is executed, wherein the fourth algorithm also operates on a plurality of operating parameters of the knitting machine 1 and the second knitting machine 1' arranged in a reciprocal relationship. The above operating parameters may include at least one or more of the following parameters: the number of knittings 4 on the cylinder 3, the size of the knitting on the cylinder, the diameter of the cylinder, the rotational speed of the cylinder, the number of the yarns 10 or the position of the yarn feeding, The number of yarn feeders, the type of yarn used, and the like. For example, the fourth algorithm can Including converting the yarn loss reference value per knitted zone 6a, 6b by applying a conversion formula to fit the second knitting machine 1', wherein the conversion formula adapts the value to be between the diameters of the two knitting machines or The difference or percentage relationship (or other) between the number of knitting needles of the two knitting machines is proportional. The method may further comprise the step of displacing the position of the additional looping triangle of the additional needle 4 operatively acting on the needle plate, similar and associated with the steps performed on the looping triangles on the barrel 3. The present invention also relates to a method for producing a knitwear on at least a circular knitting machine for a knitwear or a hosiery, comprising a method for adjusting the size of a knitwear according to the above-described manner, the method of adjusting the size of the knitwear in the production of knitwear The process is performed continuously, or periodically at regular intervals as predetermined or established by the user. The method for adjusting the size can also be carried out at least until an operating condition selected from the following: after the production starts, after the knitting machine is heated for a short period of time, at least after the maintenance intervention of the knitting machine, after the replacement of at least one component of the knitting machine, the knitting is affected When at least environmental conditions (eg, ambient temperature or humidity) of the machine function change (above a predetermined threshold). The invention further relates to a software program for a circular knitting machine for a knitwear or hosiery, which is configured to perform one or more steps of a method in accordance with the method steps as described above. The method steps described above can be implemented by more than one software program, for example, some steps can be implemented by a first operating software mounted on the control unit 11 of the knitting machine, and other steps can be performed by a second forming or mounting on the external processor 16. A software program implementation is designed in which an external processor is operatively connectable to the knitting machine 1 via an internet 15 or a portable storage device. The invention also relates to a knitting machine 1 of the above type, the control device 11 being configured to perform at least some steps of the method of the above type, and/or having the above The first software program installed. The invention thus conceived is susceptible to numerous modifications and variations, all of which are within the scope of the inventive concept, and the described components may be replaced by other technically equivalent elements. The invention has important advantages. Primarily the present invention is capable of eliminating some of the disadvantages of the prior art. The present invention is also capable of producing high quality knitwear that is substantially defect free and reduces defective products. The present invention also enables efficient and efficient automatic control and adjustment of the production of knitwear, minimizing operator intervention. The present invention is also capable of forming products having a large size uniformity at different times and under different operating conditions on the same machine, as well as products produced on a plurality of machines. The present invention is also capable of accurately and reliably controlling and adjusting the size of knitwear produced on one or even multiple knitting machines at the same time. The invention also makes it possible to reduce the number of personnel required to control production, especially in factories with a large number of knitting machines. The invention is also simple, reliable and economical to implement, and guarantees high standards of repeatability and safety.

1‧‧‧Circle knitting machine

1', 1" ‧ ‧ second knitting machine

2‧‧‧Support structure

3‧‧‧Syringe

3‧‧‧Cylinder

4‧‧‧Knitting on the cylinder

4a‧‧‧Heel

5‧‧‧Balanced knitwear section

5a‧‧‧ stitches

6‧‧‧Knitwear

6a, 6b‧‧‧ knitting area

7‧‧‧Circle triangle

8‧‧‧ Passive yarn feeder

8‧‧‧First yarn feeder

9‧‧‧ total yarn

10‧‧‧ yarn feeder position

11‧‧‧Control device

12‧‧‧Electronic electronic equipment

13‧‧‧ reel

14‧‧‧ arrow

15‧‧‧Wired network

Figure 1 is a schematic illustration of a circular knitting machine for a knitwear or hosiery according to an embodiment of the present invention; Figure 2 shows a plurality of knitting machines of the type shown in Figure 1, the plurality of knitting machines shown being operatively Connected to each other, provided with an external processor for transferring data via a wired network and/or a wireless network; FIG. 3 is a schematic view of some components of the knitting machine of FIG. 1, particularly showing the yarn reel and the yarn feeding And details relating to the corresponding yarn feeding position, wherein the yarn is supplied to the moving needle of the cylinder of the knitting machine at the corresponding yarn feeding position; Figure 4 is a detail relating to the yarn feeding position of the knitting machine, wherein the moving needle moves vertically in the cylinder according to the movement determined by the associated looping triangle; Figure 5 is a portion of the knitted fabric having a regular structure; Figure 6 is An example of a knitwear subdivided into two consecutive knit zones; Figure 7 is a schematic illustration of a method for adjusting the size of a knitwear in production on a circular knitting machine in accordance with an embodiment of the present invention; A variation of the illustrated method; Figure 9 is another variation of the method of Figure 7; and Figure 10 is an embodiment of a preliminary step of adjusting and balancing the production of a circular knitting machine.

Claims (10)

A method for adjusting the size of a knitwear in production on a circular knitting machine for a knitwear or hosiery, the method comprising the steps of: pre-arranging at least one circular knitting machine for a knitwear or hosiery, The circular knitting machine includes at least: a support structure; a barrel rotatably mounted in the support structure; a plurality of knitting supported by the barrel, the knitting being movable parallel to a rotation axis of the barrel for Producing a knit fabric; a plurality of looped triangles operatively acting on the knit, and selectively movable separately for individually changing the respective yarn feeder positions corresponding to the yarn The size of the stitches produced by the knitting needle itself, each of the looping triangles being independent of each other, each of the plurality of first fixed drum passive yarn feeders being operatively operated for conveying the yarn unwound from the fixed drum to a knitting needle corresponding to a corresponding yarn feeding position and a corresponding looping triangle in the stitching triangle; a control device for controlling the operation of the knitting machine; and an electric electronic device connected to the electric electronic device To the stated Control device and operatively operable to control operation of the plurality of components of the knitting machine and to detect a plurality of operating parameters of operation of the knitting machine; - defining a knitwear to be produced on the knitting machine, The knitwear subdivides the knitwear by defining at least a knit zone of the knitwear or a plurality of continuous knit zones of the knitwear, each knit zone corresponding to a corresponding portion of knit fabric; - in the knitting machine The production device of the knitwear and the knitting zone is activated on the control device; - sequential production of the knit zone of the knitwear, the tension or gram weight of the yarn delivered to the needles being maintained substantially constant by the brake device and/or the yarn tensioning device; - by a corresponding activation signal from the knit zone and Detecting, in the end signal, each of the yarn feeder positions corresponding to the machine and/or the associated fixed drum passive yarn feeder or for all fixed drum passive yarn feeds in the production operation of the plurality of first fixed drum passive yarn feeders The total number of yarns used to form each knitting zone, thereby detecting a plurality of data relating to yarn loss per knitting zone; - comparing a plurality of yarn loss per knitting zone with a corresponding plurality of knitting zones The yarn loss reference value is such that a corresponding plurality of comparison results are obtained; if the comparison results exceed the corresponding predetermined tolerance threshold, the position of the circled triangle is determined by the first algorithm based on the corresponding plurality of comparison results a plurality of correction values; before the production of the successor zone of the knitwear, and/or immediately before the production of the corresponding knitwear and/or before the respective knitwear of the respective knitwear of the production After having a temporarily stored correction value corresponding to each knitting zone, automatically shifting into a loop triangle according to the plurality of correction values, so as to reduce the plurality of each yarn-knitted yarn loss data and the plurality of each knitting The difference between the reference values of the yarn loss in the area. The method of claim 1, wherein the total yarn loss data per knitted zone is detected or calculated, corresponding to the amount of yarn used to form each of the knitting zones, which corresponds to all of the yarn feed positions of the machine and / Loss of the yarn of the running yarn feeder in the plurality of first yarn feeders, and wherein the total yarn loss data per knitting zone is compared with the corresponding total yarn loss reference value per knitting zone in order to obtain a plurality of corresponding total comparison results, and defining a common correction value for each knit zone, and wherein said step of shifting into a circle of triangles is performed by shifting all of the circled triangles running in production together or simultaneously according to the same common correction value. Executed. The method of claim 1 further comprising the step of preparing to adjust and balance the knitwear produced by the knitting machine, wherein said preliminary adjustment and balancing are performed prior to said method steps, and including the additional steps of: defining A portion of the balanced knit fabric to be produced on a knitting machine having a substantially uniform structure suitable for production in a knitting machine and/or a plurality of first fixed drum passive yarn feeders. The respective yarn feed positions of the yarn feeder determine the same yarn loss; - the balance knit portion is produced by a predetermined number of full rotations of the cylinder of the needle, and the conveyance is maintained by the brake device and/or the yarn tension adjusting device The tension of the yarn of the needle is substantially constant; - between the respective activation and end signals of the balance knitted fabric portion, the plurality of yarn loss data for the yarn used to form the balanced knitted portion are detected, in the machine and/or Detecting corresponding yarn loss data at each yarn feeding position of the associated passive yarn feeder of the plurality of first passive yarn feeders; - corresponding yarn delivery position with the machine Related and / or associated with a respective yarn feeders each yarn consumption data, or a single full rotation of the cylinder The average of each yarn loss data is compared to a single common yarn loss reference value to obtain a corresponding comparison result; if the corresponding comparison result of the respective yarn feeder exceeds a predetermined tolerance threshold or falls outside the predetermined tolerance range And determining, according to the comparison result, a correction value of the position of each stitching triangle by the second algorithm; - shifting each of the stitching triangles according to the relevant correction value, so as to reduce the corresponding yarn loss of the corresponding yarn feeder The difference between the data and the yarn loss reference value to balance the fabric in production. The method of claim 1, wherein the correction value or each correction value of the position of each of the looping triangles corresponds to a plurality of minimum unit displacements proportional to respective values of the comparison result, or The correction value or each correction value of each of the positions of the circle of triangles corresponds to a minimum unit displacement of the circled triangle for any comparison result, and/or at least the step and/or the step of shifting the circle into a triangle The step of shifting each of the loop triangles is performed a plurality of times until the or each comparison result is at a predetermined tolerance threshold of all the yarn feeders operating in the plurality of first yarn feeders; and/or The method includes the steps of: when it is impossible to make the or each comparison result within a predetermined tolerance threshold or a predetermined tolerance range of all the yarn feeders operating in the plurality of first yarn feeders within a predetermined number of cycles, An alarm or stop signal is issued. The method of claim 1, further comprising determining the yarn on the knitting machine or the second knitting machine by processing the plurality of yarn loss data or the yarn loss data per knitting zone by using a third algorithm Line loss reference value, yarn loss reference value per knitting area or multiple per knitting zones a yarn loss reference value, wherein, for example, the third algorithm is to perform the yarn loss data or the yarn loss data per zone by selecting the loss data associated with the balance knit portion or the approved balance knitwear Average, or maximum, or minimum. The method of claim 1, further comprising the step of: receiving, in the knitting machine, a yarn loss reference value, per knitting, measured or calculated on the second knitting machine from the second knitting machine Zone yarn loss reference value or a plurality of yarn loss reference values per knitting zone; and/or may further comprise the steps of: determining a yarn loss reference value calculated or measured by the knitting machine, and a yarn loss reference value per knitting zone Or a plurality of per-knit zone yarn loss reference values are transmitted to at least a second knitting machine, the step of receiving or transmitting the reference value through a wired network and/or through a wireless network and/or through a local network and/or It is automatically executed by connecting to the Internet or by transmission of a storage device. The method of claim 1, further comprising the step of: automatically modifying the size of the knit to enable production of corresponding knitwear having different sizes on a second knitting machine different from the circular knitting machine Or a corresponding knitwear having the same size, wherein the per-knit zone yarn loss reference value or the plurality of per-knit zone yarn loss reference values measured or determined on the knitting machine is modified according to a fourth algorithm And performing a step of automatically modifying the size, wherein the fourth algorithm further calculates a plurality of operating parameters set in a reciprocal relationship between the knitting machine and the second knitting machine, the operating parameters including at least one or more of the following parameters : the number of knitting on the cylinder, the size of the knitting on the cylinder, the diameter of the cylinder, The speed of the cylinder, the number of yarn feed positions, the number of yarn feeders, or the type of yarn used. A method for producing a knitwear on at least a circular knitting machine for a knitwear or a hosiery, characterized in that the method comprises the knitting for adjusting knitting according to any one of claims 1 to 7. a method of sizing a product, the method of adjusting the size of the knitwear is continuously performed in the production process of a plurality of identical knitwear separated from each other, or is predetermined or developed by the user during the production process of the knitwear Performed periodically at regular intervals, and/or when at least an operating condition selected from the following is confirmed: during the short-time heating of the knitting machine after production start; after at least the maintenance intervention of the knitting machine; after replacing at least one component of the knitting machine At least when the environmental condition changes above a predetermined threshold, wherein the environmental condition potentially affects the operation of the knitting machine, for example, ambient temperature or humidity level. A software program for a circular knitting machine for a knitwear or a hosiery, which is configured to perform the method of any one of the above-mentioned claims. A circular knitting machine for a knitwear or a hosiery, comprising at least: a support structure; a syringe rotatably mounted in the support structure; a plurality of knitting supported by the cylinder, the knitting being parallel to the The spindle of the barrel is movable to produce a knitted fabric; a plurality of looped triangles operatively acting on the stitching and selectively movable separately so that the respective changes are located The size of the stitches generated by the knitting needle at the yarn feeding position, the looping triangles are independent of each other, and the plurality of first stitches are Each of the rotary drum feeders is operatively operable to supply yarn unwound from the stationary drum to a corresponding looping triangle located in the respective yarn feeding position and the loop forming triangle a knitting needle; a control device for controlling the operation of the knitting machine; and an electric electronic device coupled to the control device and operatively operable to control a plurality of components of the knitting machine And a plurality of operating parameters for detecting the operation of the knitting machine, the control device being configured to perform the method of any one of the above-mentioned claims.