Water-jet plastic looms can be used for weaving heavy-weight FIBC (Flexible Intermediate Bulk Container) fabrics and light-weight woven fabrics. The equipment adopts a direct creel feeding warp let-off method. The designed creel has a capacity of 2600 ends, and large-sized bobbin holders are used to better ensure the flatness of the warp yarns, reducing the tendency to form loops. Weft insertion is achieved either by a mechanical flat belt system or an electronic weft storage device. The shedding method is either plain shedding or cam shedding, with an increased shed opening size to enhance weft yarn passage capability. A two-roller squeezing-type dehumidification system reduces the moisture content of the woven fabric to: no more than 4% for heavy-weight fabrics and no more than 1% for light-weight fabrics. An electric heat sealing edge device automatically seals and cuts the selvedges simultaneously with fabric winding. Two sets of waste edge devices are employed. An independent external cloth winding mechanism allows for a winding diameter of up to 1.2 meters, and the use of rubber-coated rollers ensures synchronous and reliable winding. The electrical system utilizes Qingdao Shenghong electrics, which incorporate Korean technology. This electrical system synchronizes warp let-off, cloth take-up, weft insertion, and heat sealing. It can automatically stop the machine in case of short weft insertion during the weft insertion process. The operation is simple, easy to understand, safe, and reliable.
In existing technology, mesh products are primarily woven from plastic filaments (or fiberglass filaments) using water-jet plastic looms, mostly employing conventional fabric weaving methods. In this weaving method, during the formation of the shed by the warp yarns, the warp yarns cannot be twisted around each other, thus preventing the implementation of gauze weaving (leno weaving). This results in lower quality and poorer strength of the mesh fabric. Furthermore, while a minority of plastic mesh looms can achieve gauze weaving during shed formation, their used shedding and gauze weaving mechanisms are not entirely reasonable. The main shortcomings lie in the power mechanism. Specifically, the lateral reciprocating movement of the leno healds within the harness frame relies on the coordinated action of a longitudinally moving cam and a return spring. This structure is complex, operates insufficiently smoothly, and the leno healds are prone to shaking during reciprocating movement.
A shedding and gauze weaving mechanism for plastic mesh looms, specifically relates to the field of looms. It comprises a harness frame and leno healds arranged within the harness frame capable of reciprocating movement. Two sets of gauze weaving power mechanisms are fixedly arranged on one outer side of the leno healds. Both sets of gauze weaving power mechanisms include a horizontal moving rod. A sleeve is arranged on the side of the horizontal moving rod away from the leno healds. One end of the horizontal moving rod is hingedly connected to a connecting rod. A pin shaft is provided on the side of the connecting rod away from the horizontal moving rod. The first transmission rod and the second transmission rod are both provided with racks on their mutually facing sides. A gear is arranged between the first transmission rod and the second transmission rod. The gear is fixedly connected to a rotary motor on one side. By driving both ends of the leno healds to move synchronously through the two horizontal moving rods, the reciprocating movement of the leno healds becomes more stable.
To overcome the aforementioned drawbacks of the existing technology, our company has developed a shedding and gauze weaving mechanism for plastic mesh looms, which can improve the stability of the leno healds during horizontal movement within the harness frame. It comprises a harness frame and leno healds arranged within the harness frame capable of reciprocating movement. Two sets of gauze weaving power mechanisms are fixedly arranged on one outer side of the leno healds, located at the upper and lower ends of the leno healds respectively. Both sets of gauze weaving power mechanisms include a horizontal moving rod. A sleeve is arranged on the side of the horizontal moving rod away from the leno healds, and the horizontal moving rod slides within the sleeve. One end of the horizontal moving rod is hingedly connected to a connecting rod. A pin shaft is provided on the side of the connecting rod away from the horizontal moving rod. The connecting rod in the upper gauze weaving power mechanism is hingedly connected to a first transmission rod via its pin shaft. The connecting rod in the lower gauze weaving power mechanism is hingedly connected to a second transmission rod via its pin shaft.
