DE2063724A1 - Shock-free needles, especially for circular knitting machines - Google Patents

Description

Patent attorney Dipi Phys. Dr. Walther 3unius

3 Hannover. Abb *. 20 December 22, 1970

Dr. J / K. My file: 1953

Vyzkumny a vyvojovy ustav Zavodu vseobecneho strojirenstvi, Brno, G-ottwaldova 76

Shock-free needles, especially for circular knitting machines

The invention relates to bumpless needles for circular knitting machines.

It is the purpose of the present invention to solve the problem of reducing the impact force on the needles or inertial force or that of the to be knitted Yarn developed strength to loosen.

At the moment the Uadein are sbaibeb evenly thick or with a recess in the Uritf.-rteLl for the purpose of pre-springing

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BATH ORIGINAL

206372A

of the needles in the needle channel in order to achieve a certain resistance to prevent the needle from falling out from the needle channel prevented. The problem of reducing the impact is only solved in such a way that at the point where the needle butt meets the lock, different angles can be chosen according to experience. The sudden one Increasing the forces at these points results in local wear and tear on the lock. This wear and tear can also occur at points of maximum acceleration of the needle or the effect of the yarn resistance. These Fact limits the increase in the performance of the circular knitting machine, both what the actual, by the Speed expressed performance as well as the increase in the number of lock systems concerned.

The invention overcomes these disadvantages.

The invention consists in that in the needle channels displaceable 'stored needles at the point of the feet have a recess to reduce the stiffness of the needles.

The advantage of the bumpless needles for circular knitting machines according to the invention is that they ο a reduction secure the stress on the needle and the cam, which enables a reduction in both parts. At the same time this enables; Arrangement a significant Increasing the performance of the machine either by increasing Mr the speed or the number of SoliloUsiyü Learn.

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BATH ORIGINAL

The essence of the invention is explained in more detail with the aid of an exemplary embodiment shown schematically in the drawing explained. Show it:

1 shows the front view of a needle covered in the area of the foot, on the side, which is opposite the side with which the foot hits the lock rail;

Fig. 2 is a side view of the same;

Fig. 3 shows the resilient mounting of the needle as a result of a recess in the sinkers or webs in the area of the Needle foot;

4 shows a pre-sprung needle mounted in the needle channel.

Shock-free needles for dog knitting machines solve the problem of reducing the impact force or the force of inertia or the force developed by the yarn in such a way that in the area of the at the side of the Needle 2 arranged needle butt 1 a recess 3 is provided, namely on the approach of the needle 2 to the opposite side of the Schlossbahn. In the case of a composite needle bed (see Fig. 3) the recess 4 is formed in the flanks of the webs from which the needle bed is composed. These Arrangement is advantageous for compound needle beds. The advantage is that the needle is not weakened is, the recess 4 can be formed in the webs 5 on both sides, what the application in Machines with reversing gear enabled. Another The possibility is the design of a pre-sprung needle 2, which is mounted displaceably in the needle channel 6, as a result of which between the flank of needle 2 and the flank of the

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Needle channel 6 in the area of the needle butt 1 a game is created so that the needle 2 when it hits the lock in the The area of the needle butt is springy. This increases the flexibility of the needle 2 at the point where a Force is created by the meeting of the lock and the needle butt 1, which increases the elasticity leads. For example, when the needle 2 runs into the cam track, the force generated is broken down into a larger time interval, d. H. their size diminishes. This makes it possible to increase the engine speed or to choose a larger number of lock systems »

Shock-free needles according to the invention can be used with advantage Used in the construction of circular knitting machines that have a maximum reduction in on the needle allows impact force acting during the operation of the machine. The construction described is also for ! • Salmon knitting machines can be used. In both cases it can this solution is also used for other auxiliary elements be e.g. B. sinkers, needle jacks, etc. -

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Claims (2)

Claims ί M J Seamless needles for circular knitting machines, characterized, that the displaceably mounted in the needle channels (6) Needles (2) in the area of the needle feet (1) with a recess (3) to reduce the Stiffness of the needles (2) are provided. 2. Shock-free needles for circular knitting machines according to claim 1,
characterized, that the needles mounted displaceably between the webs (5) in the area of the needle feet (1) with correspond to the recess (4) provided on the webs (5). Shock-free needles for circular knitting machines according to claim 1,
characterized, that the needles (2) mounted displaceably in the needle channels (6) are pre-sprung in the area of the needle feet (1) φ . 109827/1050 Blank page