Patent Grant
7204103
The present invention relates to a fabric winding machine and particularly to a fabric winding machine installed on a circular knitting machine to wind and collect finished fabrics.
Circular knitting machine is fundamental equipment in the textile industry. It has a plurality of knitting needles located on a needle dial and cylinder to knit same or different types of yarns to become a annular fabric. The knitted fabric is wound by a fabric winding machine located beneath the circular knitting machine to form a bale of neat fabric.
The conventional fabric winding machines include two basic types: one aims to flatten the knitted annular fabric and fold in two halves without splitting the fabric and collect the fabric on a fabric collection bar through a plurality of rollers; another type includes a fabric splitting machine to split the annular fabric, then extend the fabric and wind the extended fabric on the fabric collection rod.
The fabrics knitted from different types of yarns have different fabric characteristics. For instance, the fabric using rubber yarns or including rubber yarns is difficult to return to the original form once folded and pleated. Hence a non-splitting fabric winding machine cannot be used to wind this type of fabric. If a circular knitting machine has originally included such a non-splitting fabric winding machine, the non-splitting fabric winding machine has to be changed to a fabric winding machine equipped with fabric splitting function to avoid forming pleats. However, the fabric winding machine is a large size equipment and quite expensive. Its weight and size make changing difficult on the circular knitting machine. Moreover, to do such a change requires not only disassembly and re-assembly of large equipment, a large storage space also is needed to store the removed fabric winding machine. This seriously affects the cost of producers.
Some techniques have been proposed to remedy the aforesaid problem. For instance, R.O.C. patent No. M245217 entitled “Dual structure for fabric splitting and winding of fabric winding machines” aims to be used for fabric splitting and winding on a knitting machine. It has a fabric splitting machine located on a fabric winding machine that has a splitting knife and a motor. The fabric winding machine is installed on a lower side of the knitting machine and includes guiding wheels, rollers, fabric dispensing wheels, a first and second fabric winding wheels. The fabric splitting machine splits the fabric of the knitting machine. The guiding wheels of the fabric winding machine direct the fabric, the fabric dispensing wheels spread the split fabric, the rollers move the fabric forwards, and finally the first fabric winding wheels wind the fabric. Hence the fabric can be split, spread and wound in a neat manner. When there is no need to split the fabric, the fabric produced from the knitting machine is directly directed by the guiding wheels without passing through the fabric dispensing wheels (by moving the fabric dispensing wheels away); the fabric is wound by the second fabric winding wheels. Thus one machine can achieve two purposes. The main feature of the previous patent is to provide two different winding wheels to wind respectively the split or non-split fabric. The fabric flattening structure is the same. The width of the split fabric is two times of the non-split fabric. Hence it needs an extended space to smooth spreading of the fabric and collect the fabric on the fabric winding wheels.
Moreover, the previous patent has to consider another factor that affects smooth fabric winding in the non-split condition. Namely, in the non-splitting condition the fabric is directly wound through the guiding wheels without any fabric treating. In the event that there is any pleat or wrinkle occurred to the fabric after the knitting operation is finished, the pleat or wrinkle is directed wound into the fabric. This affects the fabric quality.
In addition, the fabric dispensing wheels to spread the split fabric in the previous patent take a lot of space. That patent switches to the non-splitting condition by moving the fabric dispensing wheels backwards. As a result, the space occupied by the fabric winding machine increases, and the number of machines installable on the same size of plant is smaller. Total production output also decreases. This is also a concern to be considered during procurement of the fabric winding machine.
The primary object of the present invention is to provide a fabric winding machine equipped with dual functions. The fabric winding machine of the invention has a fabric splitting mode and a fabric non-splitting mode that can be switched rapidly according to the fabric material to be knitted by a circular knitting machine. The fabric winding machine includes a fabric directing mechanism to treat the knitted annular fabric finished by the circular knitting machine, and a fabric winding mechanism to collect the fabric on a fabric collection rod. The fabric directing mechanism has an arched bracket or a fabric extending bracket depending on the fabric splitting mode or fabric non-splitting mode. In the fabric splitting mode, a fabric splitting unit is provided to split the annular fabric to become a planar fabric. The two modes mentioned above have different fabric winding paths to wind the fabric on the fabric collection rod. Through the fabric directing mechanism and change of the fabric winding path, the fabric winding machine can provide two types of functions to wind the fabric after split and directly wind the fabric without disassembling and replacing the entire fabric winding machine as the conventional fabric winding machine does.
Another object of the invention is to reduce the space occupied by the fabric winding machine. This invention can be transformed to the fabric splitting mode or non-splitting mode by switching different fabric directing mechanisms. The fabric directing mechanism that is not being used may be removed and stored offsite without occupying an additional operation space.
Yet another object of the invention is to collect the fabric on the fabric collection rod in a smooth and neat manner. In the fabric splitting mode or non-splitting mode, a different fabric directing mechanism and a different fabric collection path are used to treat the fabric. Thereby the fabric can be collected on the fabric collection rod smoothly and neatly.
The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.
Please referring to
The switching of the fabric directing mechanism 10 has two options. One is the fabric non-splitting mode as shown in
In the fabric non-splitting mode, the fabric directing mechanism 10 of the fabric winding machine 1 has a fabric directing rod assembly 12 located below the fabric extending bracket 11 to fold and stack the annular fabric 2 stretched by the fabric extending bracket 11. The transmission mechanism 30 drives a fabric winding rod 21 of the fabric winding mechanism 20 to wind the folded annular fabric 2 on a fabric expander rod 23 of the fabric winding mechanism 20. The fabric directing rod assembly 12 and the fabric expander rod 23 are interposed by a middle fabric directing rod 24 which presses the annular fabric 2 to provide a tension to keep the flattened annular fabric in a tight condition without generating pleats. The path previously discussed is a first fabric collection path for the fabric non-splitting mode provided by the fabric winding machine 1. The fabric expander rod 23 and two opposite screw threads 231 formed two ends thereof can push any wrinkle generated on the surface of the folding annular fabric 2 to two outer ends. Thus the flattened annular fabric 2 wound on the fabric collection rod 22 is smooth and neat.
Referring to
In the fabric splitting mode, the fabric directing mechanism 10′ has a split fabric directing rod 14 located below one end of the arched bracket 13 opposing the fabric stretching initial end 131 on another end. Such a design aims to achieve a purpose: as the split and stretched planar fabric 2′ has a much greater width and has to be transformed from annular to planar, during the transformation although the arched bracket 13 is extended, a space is still needed to extend gradually. Otherwise an abrupt change of the shape of the fabric easily produces wrinkles and pleats. Hence the split fabric directing rod 14 is located on a relative far away position from the fabric stretching initial end 131 to allow the planar fabric 2′ to have a sufficient space to be transformed to a flattened surface. Then the arched bracket 13 folds and stacks the stretched planar fabric 2′. The transmission mechanism 30 drives the fabric winding rod 21 of the fabric winding mechanism 20 to wind and collect the planar fabric 2′ on the fabric expander rod 23 of the fabric winding mechanism 20. Moreover, the split fabric directing rod 14 and the fabric expander rod 23 are interposed by a middle fabric directing rod 24 which presses the planar fabric 2′ to provide a tension to make the stretched planar fabric 2′ in a tight condition without forming wrinkles. The path discussed above is a second fabric collection path for the fabric splitting mode provided by the fabric winding machine 1. The fabric winding mechanism 20 at the later stage is same as the fabric non-splitting mode, with the fabric expander rod 23 and the two opposite screw threads 231 on two ends thereof to push any wrinkle formed on the surface of the folding planar fabric 2′ to the two outer ends. Thus the planar fabric 2′ with a smooth surface can be obtained and wound on the fabric collection rod 22.
In summary, the invention aims to provide a fabric winding machine that has detachable fabric directing mechanisms 10 and 10′ to form a fabric splitting mode or a fabric non-splitting mode. The annular fabric 2 knitted by the circular knitting machine is operating in a selected mode and guided by the fabric directing mechanism 10 or 10′. Each mode has a different fabric collection path. For the fabric on which pleats are allowable or splitting is not required, the annular fabric 2 knitted by the circular knitting machine follows the first fabric collection path in the non-splitting mode, in which the fabric extending bracket 11 stretches the knitted annular fabric 2 and the fabric directing rod assembly 12 folds and winds the stretched annular fabric 2. For the fabric that does not allow pleats or requires splitting, it is processed by the fabric winding machine 1 in the fabric splitting mode. Switching of the two modes can be accomplished by merely removing the fabric extending bracket 11, and installing the arched bracket 13 and fabric split unit 40. And the annular fabric 2 knitted by the circular knitting machine follows the second fabric collection path, in which the fabric is split by the fabric split unit 40, and held on the arched bracket 13 to be stretched and flattened by the split fabric directing rod 14 to become the flattened planar fabric 2′. Whether the fabric is spitted or not, the fabric winding rod 21 of the fabric winding mechanism 20 is driven by the transmission mechanism 30. The annular fabric 2 or planar fabric 2′ is drawn and flattened by the fabric expander rod 23 and wound and collected by the fabric collection rod 22. Hence by means of the fabric winding machine 1 of the invention, switching between the fabric splitting mode and the non-splitting mode can be done easily. And different fabric directing mechanisms can be removed and installed to collect the fabric on the fabric collection rod in a smooth and neat manner. The unused fabric directing mechanism does not occupy operation space or affect production.
While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.
| Number | Name | Date | Kind |
|---|---|---|---|
| 3855822 | Lee | Dec 1974 | A |
| 4932599 | Doerfel | Jun 1990 | A |
| 5317885 | Vignoni | Jun 1994 | A |
| 5566558 | Tsuchiya | Oct 1996 | A |
| Number | Date | Country |
|---|---|---|
| M245217 | Oct 2004 | TW |
