Patent Application
20210070583
Not applicable.
Not applicable.
Not applicable.
Not applicable.
The invention relates to a winding method in the transfer machines where hand knitting yarns are wound on a bobbin.
In particular, the invention is related to a winding method which allows more than one yarn to be wound on a single bobbin in the transfer machine.
Today, hand knitting yarns produced from raw materials such as acrylic, cotton, silk, cotton-acrylic blend etc. are marketed as different types balls of yarn. The final balls are hollow inside and formed only by winding the yarns on top of each other.
In addition to the mentioned ball type, the said yarns can be marketed by winding on bobbins. The yarn is wound on a bobbin by means of a transverser and marketed together with the bobbin. The bobbin rotates around its axis and winds the yarn fed by the traverser on it and the transfer process is realized.
The aforementioned balls of yarns can be packaged as a single color, even though packaging of different colored balls is also possible. A package consisting of different colors of balls is called an assortment.
In the prior art, a separate color yarn is fed into each eye of the balling machine to make assorted packs and these colors are selected and packaged manually by means of an element in the machine. This situation increases labour.
In the state of the art, personnel error can result in an extra or missing color in the package; and therefore, the arrangement can be damaged. When packaged balls are shipped in this condition, the company's reputation is damaged by customer complaints. Besides reputation, it causes losses for the company by causing reclamation penalty.
In the present state of the art, assorted or normal ball packs take up space. This situation increases shipping costs.
In the present state of the art, a single traverser is used for bobbin winding operations, which limits the manufacturer in terms of diversity.
In addition to all these, hand knitting yarns are sold in the United States as one ball. In assorted goods, a package is used to keep different colors together. These packages are distributed on the presentation shelves with customers touching them for trial purposes and their assortments are disrupted. For this reason, there are problems related to the sales of assorted or packaged balls in the United States.
In a literature search, various structures related to the mentioned yarn traverser units have been encountered. One of them is the application no. TR2018/15092 titled “Yarn traversing device for a winding device of a textile machine producing cross-wound bobbins”. In summary of the invention classified as B65H 54/28, it is mentioned that, “The invention relates to a yarn traversing device comprising a yarn guide which is connected via an endless tensioning means in the form of a toothed belt to a single drive, wherein the toothed belt rotates in a largely closed housing of the yarn traversing device and is guided over guide wheels arranged laterally next to the traversing area and a drive wheel connected to an electric motor single drive. According to the invention by a yarn traversing device, in which the toothed belt is guided with its toothing over guide wheels, which have a smooth running surface respectively.”
Another example related to the mentioned configuration is the application no. TR2016/00069 titled “Yarn placement equipment and a method for preparing yarn wound bobbin”. In summary of the invention classified as B65H 54/16, it is mentioned that, “The invention relates to a yarn placement equipment for the preparation of a yarn bobbin wound in a yarn, comprising a bobbin shaft running along the longitudinal axis of a yarn bobbin and a tapered base disk arranged in the bobbin shaft. Yarn placement equipment comprises a yarn bobbin bracket and a yarn guide that stands adjacent to the yarn bobbin or a yarn layer arranged on the yarn bobbin during the winding process. With the help of the yarn guide, the yarn can be wound on the yarn bobbin as layers of the yarn shifted axially relative to each other. A control assembly allows controlling the winding process. The yarn guide can move back and forth in the longitudinal direction of the yarn bobbin with the help of a two-way motion to form the relevant yarn layers according to the yarn bobbin bracket. With a limit position of the lateral motion of the yarn guide towards the base disc, and the base disc of the yarn bobbin, along the longitudinal axis of the yarn bobbin during the winding operation, mounted on the two sided motion of the yarn guide, it can be fed subsequently with respect to each other by means of the feeding motion of the yarn guide and the yarn bobbin. The control mechanism is programmed to keep the relative speed of the yarn guide, resulting from two-way movement and feed movement, to the yarn bobbin constant. The invention also relates to a method for the preparation of the yarn bobbin mentioned above.”
In these applications, one traverser is used during yarn winding. This system can be given as an example of the above disadvantages.
As a result, improvements are being made in parallel with the developing technology in the traversing units of yarn travers machines, so new structures are needed that will eliminate the disadvantages mentioned above and provide solutions for existing systems.
The invention relates to traverser units of the yarn transfer machines, which, unlike the structures used in the present technique, are developed to solve the mentioned disadvantages and to bring some additional advantages.
As mentioned above, in the transfer machines, traversing the yarn over the bobbin surface in a balanced way is performed by means of a traverser.
The mentioned yarn traverser is present a single piece, which winds the yarn over the bobbin by traversing it along a desired width. Since the bobbin revolves around its own axis, the winding of the yarn on the bobbin surface takes place.
The purpose of the invention is to ensure that more than one yarn is wound on a single bobbin by using more than one yarn traverser in the transfer machine.
In this way, it becomes possible to wind different yarns of desired width and number (in accordance with the bobbin length) on the bobbin.
Another purpose of the invention is to make assorted packaging process automatically by winding at least two different yarns at the desired width on the bobbin. Thereby, the process of placing different colored yarns in the package manually will be eliminated and an advantage in terms of labour will be provided.
Another purpose of the invention is to prevent including yarn with wrong color in the assortment since assortment packaging process is performed during winding on the bobbin.
Another purpose of the invention is to wind different colored yarns onto the same bobbin, revealing the difference in thickness in the yarns, and to prevented yarns with thickness errors to be delivered to the customer. When one of the yarns wound on the same bobbin is thick and the other is thin: the thicker one has a larger diameter and the thinner one has a smaller diameter, and this will be seen immediately when looking at the bobbin. And a detailed inspection of the yarn taken into production will be possible.
The purpose of the invention is to eliminate the aforementioned disadvantage regarding the assortment sales in the United States. The sale of assorted balls with bobbin will be carried out by winding different colors on a bobbin. The balls fixed on the bobbin will not easily fall apart by the touch of the customers.
By means of the mentioned winding method, after the yarns are wound, the customers will be able to use yarns of different colors separately after removing the bobbin in the product.
It will also be possible to start knitting from any color without removing the bobbin because each individual yarn is not connected with the other, so the ends are exposed.
The structural characteristics and all advantages of the invention will be understood more clearly through the following figures and the detailed explanation written with reference to these figures. For this reason, the evaluation should be made by considering these figures and detailed explanation.
Structural Principle
A yarn transfer machine (1) is a machine that enables the hand knitting yarn to be wound on the bobbin (M). The overall structure comprises a creel (10), a machine body (20) and a traverser unit (30).
The mentioned creel (10) is the place where the completed hand knitting yarns are placed in the machine after being ready to transfer. The yarns (I) are fed from here to the machine body (20).
A yarn guide (11) is located so that it is positioned on top of the machine body (20) in the creel (10) configuration. The yarn guide (11) is used for feeding yarns (I) in the creel (10) to the traverser unit (30) in the machine body (20).
The machine body (20) is the main structure where the yarn (I) from the creel (10) are wound onto the bobbin (M). The traverser unit (30) which perform the wounding process and a bobbin bearing (21) onto which the bobbin (M) is attached are located within the machine body (20).
The mentioned bobbin bearing (21) is the part connected to the machine body (20) where the bobbins (M) on which the yarns (I) will be wound are placed.
The traverser unit (30) is the structure that is configured against the bobbin bearing (21) and allows the yarns (I) to be wound on the bobbin (M) surface in a regular manner. The traverser unit (30) comprises multi-traverser apparatus (31), traverser bearing (32), traverser shaft (33), drive gear (34) and traverser belt (35).
The mentioned multi-traverser apparatus (31) comprises traversers (311) and traverser profile (312) and is the subject of the invention. The multi-traverser apparatus (31) allows winding more than two yarns (I) on the bobbin (M). Four of the mentioned traversers (311) are shown in
Traversers (311) are fixed vertically on the traverser profile (312) by ensuring a desired distance between them. The multi-traverser apparatus (31) comprising the traverser profile (312) and the traversers (311) is of a monolithic structure. On the mentioned traverser profile (312), the traverser profile fixing gaps (313) are formed which will be used to secure the multi-traverser apparatus (31) to the traverser bearings (32).
The traverser bearing (32) is the element onto which the multi-traverser apparatus (31) is fixed. The traverser bearing (32) is passed to the multi-traverser shaft (33). By means of the multi-traverser shaft (33), the traverser (311) properly performs right-left motion horizontally along the X+ and X− directions. The smooth horizontal movement of the traverser bearing (32) ensures the smooth movement of the multi-traverser apparatus (31), which ensures a smooth winding.
The traverser shaft (33) is positioned in the traverser unit (30) parallel to the bobbin bearing (21). Thereby, the traversers (311) perform a horizontal motion parallel to the bobbin (M) to allow the winding process to take place.
The traverser belt (35) is connected to the traverser bearing (32) and the traverser bearing (32) is moved to perform back and forward motion along the X+ and X− directions the horizontally. The traverser belt (35) is driven by the motion gear (34). The motion gear (34) is driven by the motor.
The mentioned multi-traverser apparatus (31) is produced in a monolithic structure as shown in
Assembly Principle
The invention is of a monolithic structure and comprises traversers (311) mounted on the traverser profile (312) as mentioned above. The monolithic traverser apparatus (31) shown in
The multi-traverser apparatus (31) is secured to the traverser bearing (32) through the traverser profile fixing gaps (313). The traverser bearing (32) is also attached to the traverser shaft (33). The traverser shaft (33) is fixed to the traverser unit (30).
After, the traverser belt (35) is attached to the traverser bearing (32). The traverser belt (35) is also attached to the drive gear (34).
With this assembly, multi-traverser apparatus (31) is installed in the driver unit (30) and multi-yarn winding can be performed.
As an alternative to the monolithic multi-traverser apparatus (31), individual traversers (311) can also be fixed one by one to the traverser bearings (32) as mentioned in the construction principle. It is possible to assemble a desired number of traversers (311) by attaching desired number of traverser bearings (32) on the traverser shaft (33).
Operating Principle
Yarns (I) as many as the number of traversers (311) are fed from the creel (10) to the traverser unit (30), which is assembled in the aforementioned manner. The number of traversers (311) can be seen as three and four in figures and can be up to five and the operating principle will be explained over three traversers (311).
Three yarns (I) are fed to the three traversers (311) as seen in
The machine operation is started. The bobbin bearing (21) rotates the bobbin (M) around the bobbin bearing's (21) own axis. With the rotation of the bobbin (M), the yarns (I) fixed to the bobbin bearing (21) are drawn and winding on the bobbin (M) starts.
As in the previous technique, the traverser (311) moves left and right horizontally in X+ and X− directions. With this action, the yarn (I) is wound on the bobbin (M) surface in a balanced manner. By means of the multi-traverser apparatus (31) used here, it becomes possible to wind more than one yarns (I) on the bobbin (M).
After winding up to a desired diameter, the machine stops/is stopped and the bobbin (M) is removed from the bobbin bearing (21). With this process, three yarns (I), which are identical or different from each other, are wound on a single bobbin (M) and the bobbin (M) becomes ready to be packaged and marketed.
Above, the information on the transfer machine used for the transfer of hand knitting yarns are provided. Developed multi-traverser apparatus (31) can be applied to a machine where any yarn (I) type is transferred.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2019/13496 | Sep 2019 | TR | national |
