DE509964C - Engaging and disengaging device for circular knitting or knitting machines with braking device - Google Patents

Description

The subject of the application relates to the indentation and indentation of circular or -Knitting machines in which the disengagement is both manual and automatic, the latter in the event of a thread breakage or loop drop, it is activated during the indentation can only be done by hand. While the disengagement by hand or automatically always in the same known manner by transferring a movement to the Stop ring happens, various facilities have become known for the indentation. Some usually use one next to the clutch or belt engagement to engage lying handle or button, others in place of this a second ring. The former establishment has the easily seen disadvantage that the operator has to engage the machine always has to go to the engagement point, which results in a lot of time loss, especially with large machines. The second has the Disadvantages that, in addition to increasing the cost of the facility, valuable space is blocked, and that the operator is wrong or wrong in the rings or their control and this endangers the machine. If the machine is equipped with a braking device, so is the engagement of the brake from the above-mentioned stop ring, as known, at the same time with worried while releasing the brake either by a special second lever or third ring happens. Finally, such facilities are known where solving the brake with

connected to the second ring. All of these facilities have those already mentioned above Disadvantages that either the indentation etc. can only be operated from one place can happen or that several facilities must be available.

In contrast, the concept of the invention represents a device in which the input and Disengagement of the machine, activation of the brake and deactivation of the brake, d. H. the unlocking of the machine after disengagement is done by just one link, namely by the known ab-. collar.

An example of execution on a circular knitting machine is shown in the drawings shown and described below. It shows:

Fig. Ι the clutch and brake with section through the ring when engaged Machine,

Fig. 2 is a plan view of the ring with the engine engaged,

Fig. 3 is a side view of the ring with the engine engaged,

Fig. 4 is a side view of the ring with the machine disengaged,

Fig. 5 is a top view of the locking disc.

When the machine is engaged, the locking latch ι rests due to the action of the spring 2 Cam 3 of the parking ring 4 (Fig. 1 and 2). The locking latch 1 and the release lever 5 are located then outside the range of the rotating locking disk 6 and the clutch

Part 7. The release lever 5 presses against the locking latch 1 ^{with its leg 0 through the action of the spring 8.}

The machine is now disengaged in a known manner by shifting the parking ring 4 in direction D until the locking latch 1 slides over the cam 3 (Fig. 2) and rests on the parking ring 4. This changes the position of the locking latch 1 and the release lever 5 in the following way:

The locking latch 1 pivots about its pivot point i ^a so far that its upper leg i * comes into the area of the teeth of the locking disk 6 and thereby holding the locking disk 6 still. At the same time, the release lever 5 has pivoted about its pivot point 5 * until it hits the stop 9. Its nose ^5c stands close to the nose-shaped beveled coupling part 7. By holding the locking disk 6 still, the cam 7 ° of the coupling part 7 moves the latter vertically downwards in a known manner, thereby decoupling the coupling parts 7 and 10. This vertical movement of the coupling part 7 simultaneously causes the nose 5 ^C to engage over the nose-shaped edge of the coupling part 7 and prevent it from moving upward against the action of the spring 11.

Simultaneously with the stopping of the locking disk 6 or after the end of the vertical movement of the coupling part 7, the brake 12 and 13, which is always in readiness for work under the pressure of the spring 11, is in action and remains in this state even after the machine has stopped, so that a rotation of the Machine cannot take place by hand. In order to enable this rotation of the machine in the disengaged state, the parking ring 4 is now moved by hand in direction D until the lower leg of the locking latch 1 hits the lower cam 4 (Fig. 2). This changes the following:

The locking latch 1 has been pulled out with its leg i ⁶ from the area of the teeth of the locking disk 6 so far that the leg just releases the teeth. The release lever remained completely in its locked position so that the machine did not engage.

After eliminating the fault that has occurred in the knitted fabric, the machine is now engaged again. This is done by moving the stop ring 4 with the help of the handle 4 ″ against the direction D until the latch 1 is again in its initial position on the cam 3. This results in the following:

After sliding the lower leg of the locking latch 1 over the cam 14, the upper leg i ^{b of} the locking trap 1 is temporarily back in the area of the teeth of the stationary. Lock washer 6 brought to be pulled out again immediately when sliding up the cam 3. Halfway through the movement, the lower leg of the latch 1 hits the lower leg 5 ^{a of} the release lever 5 and the latter begins to pivot. As a result, the upper leg 5 ^{C of} the release lever 5 is pulled out of the area of the coupling part 7, so that the same is coupled again with the coupling part 10 by the action of the spring 11 (coupling teeth not visible in the figure). The machine is now re-engaged.

To limit the path of the parking ring 4, two stop tabs 15 ° and I5 ^{6 are} attached to the support disk 15.

The stop 16 and rocker 17 serve as a safeguard against improper operation of the disengagement, i.e. against too fast switching of the stop ring 4 from cam 3 to cam 14, without taking into account the standstill necessary for uncoupling in the middle of the two cams mentioned, the stop 16 and rocker 17 (Fig. 3 and 4 ). While the shut-off members, which act automatically in the event of a thread breakage or the like, only move the shut-off ring 4 at a moderate speed when setting down, it could be jerked around jerkily when setting down by hand. In this case, if the upper leg i ^{b of} the locking latch 1 accidentally hits the head of one of the teeth of the locking disk 6, the uncoupling process could not take place while the cam 14 is already pivoting the locking latch 1 back again. The machine too would then remain engaged. The rocker 17 is connected ^{to the parking ring 4 by the connecting piece} 4 δ and hangs easily in a stable equilibrium position at its pivot point 17 °. In the event of a jerky displacement of the parking ring 4 in the direction!), The rocker 17 is now pivoted around its pivot point 17 " in direction B due to its inertia (Fig. 3) and thus comes into the position shown in Fig. 4. This causes the movement of the parking ring 4 interrupted in time in its central position.

Claims (1)

Patent claims: i. Engaging and disengaging device for circular knitting machines with Braking device, characterized in that the control of the engagement and disengagement device the machine and switching the brake on and off only a control member designed as a ring is effected. Engaging and disengaging device according to Claim i, characterized in that to ensure proper disengagement A rocker arm is built into the machine, which counteracts if it is disengaged too quickly sets a stop and thereby interrupts the movement of the parking ring in good time. For this purpose ι sheet of drawings