Technical Field

The invention relates to the shuttle weft transport system in weaving machines with semi-automatic and I or manual weft insertion systems.

The invention relates to a weft transport system with a shuttle, where the motion of the shuttle has a controllable structure, to produce fabric with woven edge for use in cases where the weaving speed is not of primary importance, such as producing sample woven fabric, for educational purposes in educational institutions and in special boutique weaving production and the weaver does not have to be constantly present at the loom for weft transport.

Prior Art

Woven fabric is basically produced by associating warp threads and weft threads with each other according to a weaving pattern. Production of the woven fabric is made by placing the weft threads between the warp threads, opening the shed, inserting the weft from the opened shed, and tamping to include the weft threads in the fabric between the warp threads.

Presently used weft insertion systems are grouped under two main headings as shuttle weft insertion systems and shuttleless weft insertion systems. Shuttleless weft insertion systems are divided into three main groups as projectile weft insertion system, hooked weft insertion system and jet weft insertion system.

In shuttle weft insertion systems, the weft thread is wrapped on the weft bobbin and placed inside the shuttle. With the shuttle stroke arms, the fabric is thrown from one end of the width of the fabric to the other end. The shuttle is thrown from the opened warp shed and the yarn unwound from the bobbin is placed in the opened shed. Operating principle of machines with shuttle weft insertion system is in the form of braking to stop the shuttle while applying the thrust to move the shuttle. Moving and stopping the shuttle is risky in small spaces such as workshops and its operation is quite noisy. The shuttle must be launched in the horizontal plane and stopped when it passes through the warp threads to the opposite side. In order for the stopped weft to come to the starting point, the process continues by throwing it again and stopping it again. Sometimes, dangerous and risky situations may occur regarding occupational safety, such as the shuttle shooting out of the warp threads. In the shuttle weft insertion system, the weft carrier, whose weight is approximately half a kilo, must also be moved in order to move a few grams of weft yarn during each weft insertion process. It is difficult to accelerate and decelerate the shuttle mass in this system. This causes the energy consumption to be high. In addition, the mass of the sley mechanism increases due to the shuttle seat and the reed, and dynamic problems such as the limitation of the sley oscillation movement speed limit the production speed. Weft insertion systems with shuttles are used in the weft insertion systems of the present industrial weaving machines and edge woven fabrics are produced.

The expectations of the manufacturers from weaving looms are adaptability to new trends, producing high quality products, high production capacity and low cost. The most important features that should be present in an ideal weaving process are increased production speed together with the minimum energy consumption and producing the highest level of woven fabric quality. These performances can be achieved in the textile industry sector by the use of high-speed industrial machines. The inadequacy of the shuttle weft insertion system to meet these performances has led to the development of weft insertion systems.

In the shuttleless weft insertion system, firstly, the weft carrier takes the weft thread from the weft feeder and brings it to the edge of the fabric by holding it at one end and moving it along the width of the woven fabric. When the weft carrier comes to the edge of the fabric, it returns to the starting point by making a ring after releasing the weft thread it has held. Here, the movement of the weft carrier to the starting point is provided by the magnetic strip. The magnetic strip moves the weft carrier in one direction. Even though shuttleless weft insertion systems do not have the disadvantages of shuttle weft insertion systems mentioned above, they create a disadvantageous situation when compared regarding fabric edge weaving. Sample weaving machines use shuttle weft insertion systems and projectile weft insertion systems, which is a kind of shuttleless weft insertion system. Edge woven fabrics are produced in shuttle weft insertion systems and fringed edged fabrics are produced in projectile weft insertion systems. Fringed edge is not preferred for fabrics produced as woven products. It is required to shape the edges with an extra process or sewing etc. and this causes an increase in fabric production costs. In semi-automatic sample weaving machines, weft insertion is done manually by a weaver.

Therefore, due to the drawbacks described above and the inadequacy of the existing solutions on the subject, it has become necessary to make an improvement in the relevant technical field.

Brief Description of the Invention

The invention relates to a weft transport system with a controlled shuttle for use in semiautomatic and I or manual weft insertion systems that meets the requirements mentioned above, eliminates all the disadvantages and provides some additional advantages.

The primary purpose of the invention is to provide a weft insertion system with controlled shuttle for the production of edge woven fabric and sample fabric.

Another purpose of the invention is to provide a weft transport system with controlled shuttle that eliminates the occupational safety risks in the working environment, with its operating system without the need for launching and braking of the shuttle.

Another purpose of the invention is to provide a weft transport system with controlled shuttle that makes the weft yarn to move back and forth uninterruptedly in the horizontal plane without the need for the weaver to throw the shuttle manually.

In order to achieve the purposes described above, the invention relates to a weft transport system with controlled shuttle for the production of edge woven fabric in a weaving system, comprising a body for depositing the weft thread in the shed and a movable shuttle in the said body that houses the bobbin on which the weft thread is wound. Accordingly, the said weft transport system with controlled shuttle comprises a shuttle provided in the said body, a magnetic field strip moving back and forth in the direction of motion of the shuttle, and a magnetic field region provided under the said shuttle, connected with the magnetic field strip to provide the movement of the shuttle with the movement of the said magnetic field strip. To achieve the purposes of the invention, the weft transport system with controlled shuttle includes a shuttle waiting slot consisting of adjacent or superimposed compartments where the shuttles are positioned to provide weft thread reserve and I or to provide different types of weft threads.

To achieve the purposes of the invention, the weft transport system with controlled shuttle is preferably used in weaving machines with semi-automatic and I or manual weft insertion systems.

The below drawings and the detailed description set out with reference to the accompanying drawings provide for a clearer understanding of the structural and characteristic properties and all benefits of the invention; For this reason, the evaluation should be made by taking these figures and detailed explanation into consideration.

Figures to Help Understanding of the Invention

Figure 1 is the vertical section view of the weaving system to which the weft transport system of the invention is adapted.

Figure 2 is the general schematic view of the weft transport system with controlled shuttle, which is the subject of the invention.

Figure 3 is the detail view of the weft transport system with controlled shuttle, which is the subject of the invention.

Figure 4 is the detail view of the shuttle waiting slot.

Figures are not necessarily to scale, and details not necessary for understanding the invention may be omitted. Furthermore, elements that are at least substantially identical or have at least substantially identical functions been denoted by the same number.

Description of the References

10 Weft Transport System with Controlled Shuttle

11 Body

12 Magnetic Field Strip

13 Shuttle

131 Weft Bobbin 132 Magnetic Field Region

14 Shuttle Waiting Slot

141 Compartment

20 Weaving System

21 Frames

22 Reed

30 Edge Woven Fabric x: Shuttle Direction of Motion

Detailed Description of the Invention

In this detailed description, the weft transport system with controlled shuttle (10), which is the subject of the invention, is described only for a better understanding of the subject and without causing any limiting effect.

The invention relates to a weft transport system with a controlled shuttle (10) provided in the weaving system (20). The weft transport system with a controlled shuttle (10), which is the subject of the invention, is preferably used in weaving machines with semiautomatic and I or manual weft insertion systems for the production of edge woven fabrics (30). The weft transport system with a controlled shuttle (10) finds field of use in sample weaving machines, applications where weaving speed is not of primary importance, and in situations that do not require the weaver to be constantly present at the loom for weft insertion.

The weaving system (20) illustrated in Figure 1 , in which the edge woven fabric (30) is obtained, basically consists of the frames (21 ) through which the warp threads are passed and move to form the shed, the reed (22) through which the warp threads are passed and which determines the weaving density and the fabric width and the weft transport system with a controlled shuttle (10), which allows the weft to be passed through the opened shed.

The weft transport system with a controlled shuttle (10), which is the subject of the invention, whose general schematic view is given in Figure 2 and detailed view is given in Figure 3, comprises a body (11 ) a magnetic field strip (12), a shuttle (13) provided in said body (11 ) moving forward (+) - backward (-) in a shuttle movement direction (x) on the said magnetic field strip (12) and a shuttle waiting slot (14). The said shuttle waiting slot (14) comprises compartments (141 ) disposed side by side or on top of each other. A shuttle (13) is positioned in each of the said compartments (141 ). The use of multiple shuttles (13) is for keeping a thread reserve and for inserting threads of different colors and effects from the weft.

A weft bobbin (131 ) is provided in said shuttle (13), on which the weft thread is wound. A magnetic field region (132) is located under the shuttle (13). The said magnetic field region (132) forms a connection with the magnetic field strip (12). With the effect of the magnetic field formed between the magnetic field strip (12) and the magnetic field (132), the shuttle (13) ensures that the weft thread is laid on the shed along the width of the fabric. Laying the weft thread along the width of the fabric is carried out by forward (+) - backward (-) movement of the shuttle (13) together with the magnetic field strip (12) in the direction of the motion of the shuttle (x). The forward (+) - backward (-) motion of the shuttle continues uninterruptedly as long as the magnetic field is present, and it is controlled by the magnetic field strip (12). Thus, edge woven fabric structure can be produced.

With the use of the weft transport system with a controlled shuttle (10), which is the subject of the invention, the occupational safety risks caused due to the throwing and braking effects are eliminated, while the edge woven fabric (20) is produced. Since the shuttle mass is not required to be accelerated in the weft transport system with a controlled shuttle (10), energy consumption can be minimized, and production costs related to this can be reduced.