Topic
Dowker notation
About: Dowker notation is a research topic. Over the lifetime, 2 publications have been published within this topic.
Papers
TL;DR: This study used the knot theory and the Dowker notation to adapt the mold for each knot, then it tried to move and/or compose tracks in order to obtain the appropriate path.
Abstract: Making knot is important work in the textile industry. Now, devices which make knots such as knotters and splicers are spread. However these devices cannot make all knots used in the textile industry, thus workers still make knots by their hand in some textile mills. These mills, therefore, demand to make knots automatically. In this study, we used a set of parts which is called a mold to make various knots. Tracks corresponding to each knot must be carved on the surface of a mold. However experience by practice is needed to design a mold, thus a logical design process is demanded for anyone to design tracks. We used the knot theory and the Dowker notation to adapt the mold for each knot, then we tried to move and/or compose tracks in order to obtain the appropriate path.
4 citations
TL;DR: In this article, a set of molds and instruments such as air cylinders and linear guide ways have been integrated to make a double sheet bend knot automatically in order to improve process efficiency.
Abstract: Knot strength is very important in processing ropes than other textile products. Thus double sheet bends are usually used in rope mills, because their knots are small and strong in order to tie two threads of yarn. These knots have been made by manual operation. These mills, therefore, are demanding to be able to make these knots automatically in order to improve process efficiency.In this study, we have developed a knotter which is able to form a double sheet bend by using a set of molds. First, we designed a path to carve tracks on the surface of the mold by using the Dowker notation. But this path was too complicated to thread yarn through the path easily. Furthermore, it is desired that the knotter can be carried by a worker in rope mills. We, therefore, have moved and/or composed paths in order to obtain the simpler path for double sheet bends. Finally, we have integrated these molds and instruments such as air cylinders and linear guide ways in order to make a double sheet bend knot automatically.
3 citations
Performance Metrics
| Year | Papers |
|---|---|
| 2008 | 2 |