SU44474A1 - Tobacco leaf stringing machine - Google Patents

Description

The proposed machine for stringing tobacco leaves is provided with an endless belt with brackets, in the grooves of which the clips are placed with the cuttings of leaves clamped in them. The indicated clips are guided onto the path of the needle guided by the groove of the stand moved by the needle bar through the pawl. To hold the needle in place during the collision of the leaves strung on it on the twine, there is a spring pressed by the protrusion of the piston producing the said pushing; another protrusion of the same piston is designed to hold the clamp in the opened form.

In FIG. 1 shows the top view of the car; FIG. 2 is a side view of it; FIG. 3 is a diagram of the operation of the swing stand; FIG. 4 is a diagram of the action of the fixed stand.

The proposed machine (Figs. 1 and 2) is provided with an endless belt 14 with brackets / 5, intended for placing the clamps / b in their grooves with the cuttings of leaves clamped in them and leading the latter to the path of the needle /.

The latter is guided by the groove 7 of the rocking stand 6 and is moved by the needle bar 2 by means of the dog 3.

The needle bar 2 has, according to the stroke of the needle, 7 sweeps. Last (231;

The crank mechanism 5 is driven through the pushing rod 4 from the gear 27, which receives movement from the common distribution pulley 25. On the axis of the needle bar 2 there is a spring for lifting it up. The rise is performed by the roller 7 when the swinging stand 6 is lowered down.

The swing of the stand b is made by a crank - connecting rod. the crankshaft mechanism 9c through the template 8, the end of which has a special profile and enters the roller 7. When the end of the template S is moved in, the roller 7 rises up and the stand 6 goes down, rotating on the axis. When the template 8 moves back, the stand o rises and the roller 7 descends. When the stand 6 is lowered down, the needle 7 is released from the needle bar 2 and the last roller 7 rises slightly upwards through the spring. This gives a free passage for the piston 7 / and the ends of the leaf cuttings.

To hold the needle 7 in place during the collision of tobacco leaves strung on it with tobacco leaves, there is a spring 33 located on a fixed support 7 (9 and pressed by the protrusion 34 of the piston 77, which produces the said pushing; another protrusion 35 of the piston 77 is designed to hold the clamp 76 in open form.

The stationary stand 10 has a groove of the same cross section as the rocker stand 6. The installation accuracy of the platform 10 is adjusted by two bolts 37 in the middle of it.

In the left edge of the stand W, a rod 77 is fastened, which is held in a horizontal position by a spring 18. At the long end of the rod, as the driving pulley 20 rotates, the cam 19 periodically acts, which, pressing on the clamp 76, causes it to come out of the protrusions of the stands and move with endless tape 14. Under the stand 10 is the tape 14, slung over the pulleys 20 and 27. The pulleys have flanges to hold the tape. The belt tension is controlled by a pulley 27; the drive pulley 20 receives a periodic motion through a pair of conical gears 28 and 26 from the distribution pulley 25. The piston 77 makes a special profile.

The piston 11 is driven by a crank mechanism 72, which is rotated by the distribution pulley 25. The end of the piston is provided with soft rubber to prevent damage to the cuttings of the leaves.

On the stand 2P (Fig. 1), conventional sheaves are fastened to twine boxes with adjusters 30 for tensioning the thread and spring ends 31 for guiding the movement of the thread. On the stand, the knife 32 is fixed to cut the twine into laces of the required length after stitching the required number of leaves on them.

There is a manual drive 23 and a chain drive 24 for driving the machine. The manual drive can be replaced by a motor with friction and gearbox mounted on it. The operation of the machine is as follows. The clamps 16 are laid leaves when breaking them; leaves are laid along the cutting diameter and the clamping cone so that the cuttings are on top of the clamp to a height sufficient for the needles 7 to pass through. The productivity of the machine depends on the length of the clamp and the number of leaves that can be laid in the clamp.

The clips with leaves are inserted into the brackets 75 of the tape 14. Last

moves toward the supports 6 and 10 until the clamp 75 rests on the stops 36, 36 located on the underside of the supports. The needle passes through the cuttings of the leaves under the action of the needle bar 2.

Piston 77, when moving to the left, removes needles / leaves, puts them on the string and goes back. During this movement, the piston holds the needle through the protrusion 34 and opens the clamp through the protrusion 55. To pass the leaves from the needle to the cord, when the piston is moving, the swinging stand b and needle bar 2 are consumed. During the return stroke, they converge again. At the end of the return stroke, the piston 20 begins to rotate. It pushes up the rod 77, causes the bracket 75 to go down with empty clips to pass under the stops 36, 36. With the further movement of the tape 14, the empty clips 16 are automatically removed from it with an iron plane 38 (Fig 2), and the next clip with leaves fits stops 36, 36.

This cycle of work is carried out with the rotation of the handle 23 through the special distribution pulley 25.

Leveling the leaves on the cord is done manually.

In stationary work, when the leaves are in a heap near the machine, for ease of feeding the clamps to the tape, a table 22 is attached to the machine, from which the worker takes the charged clips and inserts them into the tape 14.

The subject matter of the invention.

Claims (3)

1. A machine for stringing tobacco leaves, characterized by using an endless belt 14 with brackets 75, intended for placing clamps 76 in their grooves with cuttings of leaves clamped in them and supplying them to the needle path 7 guided by the grooves / stand 6 and moved by the needle bar 2 by means of the pawl 5, in order to hold which needle in place, during the stitching of the strung leaves on it, there is a spring 33, pressed by the protrusion 34 of the piston 77, which produces the said pushing, and Another protrusion 55 of the piston is designed to hold the clamp 16 in the opened form. 2. The form of the machine according to claim 1, characterized by pattern 8, acting on clip 7, and through it on the needle bar 2 for lowering the stand 6 and simultaneously lifting the needle bar 2 in order to release the needle. 3. The form of the machine according to paragraphs. 1 and 2, characterized by the use of a rod 77, which under the action of the fists 19 of the pulley 20 and serves to push the clamps 16 down to pass them under the stops. If