CZ32538U1 - Projectile capturing system on a projectile weaving machine - Google Patents

Description

The Industrial Property Office does not ascertain in the registration procedure whether the subject of the utility model meets the conditions of eligibility for protection pursuant to Section 1 of Act no. No. 478/1992 Coll.

Gripper projectile gripper loom

Technical field

The technical solution relates to a projectile catching device intended for application in grip weaving machines.

BACKGROUND OF THE INVENTION

In the division of weaving looms according to the method of weft insertion, the weft can be inserted into the shed in several ways: a shuttle, one or two needles, a gripper, water or air or small-volume clogging machines.

Cordless weaving machines have the following advantages over shuttle looms:

- the weft inserts have smaller dimensions (the shed may be lower and the warp threads are therefore less stressed, the consumption of motional energy is less);

- Large cross bobbins are used as weft templates (easier weft preparation);

- weft replacement is easier;

- have a higher speed and thus higher production;

- Their noise level is usually less.

One of the principles of jointless weft insertion is grip clogging on grip weaving machines.

On the weaving machines, the weft is taken from a stationary cross spool and is introduced into the shed by a clogger, whose jaws hold the end of the weft. The clamp is tossed into the shed either from one side or alternately from both sides.

In practice, the most widely used are Sulzer Swiss weaving looms. The gripper weft insertion projectile comprises jaws connected on one side in a U-shape, whose free ends by pressing against each other in the cradle-projectile create the force needed for gripping the weft.

The manufacture of these jaws is a relatively demanding technology, which is reflected in their cost. Similarly, the price reflects the material used with its quality requirements, since it is necessary to ensure the given physico-mechanical characteristics necessary for optimal jaw function within a very narrow range.

Jaws manufactured with respect to all functional requirements and optimized in terms of technology and material are quite expensive. However, one of the jaw arms ruptures in use and the entire jaw needs to be replaced with a new expensive product.

The object of the invention is to find an alternative to the existing product which can be produced at a lower cost and which has a longer lifetime while still fully reliably in use.

- 1 GB 32538 U1

The essence of the technical solution

This object is achieved and the disadvantages / drawbacks of the known solutions are eliminated by the gripper projectile of the gripper weave projectile according to the technical solution. The principle of the invention consists in that the gripping device is formed by two identical lamellas arranged mirror-opposite in the projectile body and terminated on the open side of the projectile body by gripping tabs for weft grip and on the opposite side by supporting surfaces for mutual positioning of the lamellas in the projectile body. equipped with an opening for the open side and anchoring openings for the rounded side.

The main advantage of the gripper projectile gripper according to the invention is that the split gripper structure is considerably simpler for manufacturing technology related to the shape of the individual slats compared to the shape of the jaws used hitherto. The split slats are fastened in the projectile body using standard rivets in the holes for the anchor rivets. This translates into the cost of the gripping device and represents a significant cost saving.

The concept of the gripping device according to the invention can also be applied to damaged existing jaws of the previously known two-arm shape. It is sufficient to separate the undamaged arm from the damaged part in the axial plane and complete the assembly of the resulting lamella with a second axially symmetrical lamella. This represents additional cost savings.

Clarification of drawings

The technical solution is illustrated by means of an example of a specific embodiment, shown in the attached drawing, where Fig. 1 shows a front view of free slats of a catching device (left) with a projectile outside the slats (right). total.

Example of technical solution implementation

As can be seen from Fig. 1 on the left, the catching device consists of two steel slats 1, mají having support surfaces 5, 5 'for fastening inside the projectile body 2 (see Fig. 1 on the right) at the anchor holes 7 and gripping pads 3, 3 'for catching and retaining the weft 4 (see Fig. 2) during the projectile movement during picking. The projectile body 2 is provided with a working hole 6 at the open side and anchoring holes 7 at the rounded side. See Figure 1 at right.

The engaging device operates by projecting the projectile opener into the work opening 6 in the projectile body 2, causing the slats 1, 1 'to open inside the projectile body 2. A weft 4 is inserted into the space between the gripping surfaces 3, 3 'of the slats 1, 1 ^Λ. in shed. See Figure 2.

Industrial applicability

The gripping device according to the technical solution is usable for projectiles of all types of grip weaving machines used for fabrics production.

Claims (1)

A gripping device of a projectile of a grip weaving machine, characterized in that it consists of two identical slats (1, Γ) arranged in a mirror image opposite each other in the projectile body (2) and terminating on the open side of the projectile body (2) by gripping surfaces (3, 3 ') for gripping the weft to (4) and on the opposite side with support pads (5, 5') for positioning the slats (1, Γ) relative to each other in the projectile body (2) equipped with an opening (6) at the open side and rounded side with anchoring holes (7).