FR2588162A1 - Device for wrapping leaf tobacco - Google Patents

Abstract

Device for carrying out the wrapping of leaf tobacco in a semi-automatic manner. The invention relates to a device permitting the automatic loading of tobacco-wrapping moulds and, after having presented the full moulds under the press, to produce a tobacco bale. It consists of an apparatus 101 intended to load the mould 113, via the belt 15, actuated by the feed-in box 12. The mould 113, whose base is movable, is intended to receive the tobacco emerging from a sorting line in order to convey it under the press 110 and to serve as a die for the bale. The press 110 is equipped with a press plate which is moved in translation by means of an electric motor and the screw/nut system. The apparatus 101 and the apparatus 110 are automated by means of two electromechanical systems.

Description

 The present invention relates to a device allowing, at the outlet of a sorting plant for leaf tobacco, the loading of the packaging molds and the pressing of the tobacco bale in a semi-automatic manner.

 In general, tobacco packaging is done manually. The sheets having to be organized correctly in the molds, the workforce turns out to be tedious and laborious.

 The device of this invention overcomes this significant loss of time for people.

 It is a device allowing the automatic loading of the tobacco packaging molds and after having presented the full molds under the press, to make a tobacco bale (page 10).

 I) The device consists of an apparatus (101), intended to load the molds (113) by the belt (15), which comes and goes above the mold (113), thanks to a feed box (12 ).

 II) The mold (113), the bottom of which is movable, is intended to receive the tobacco at the outlet of a sorting chain. The mold is provided with swivel casters thus allowing the tobacco to be transported from the loading device (101) to the device (110) for pressing the tobacco bale.

 III) The press (110) is equipped with a press plate moved in translation by an electric motor and the screw / nut system.

Ia)
The apparatus (101) is intended to load the molds (113). It consists of three separate parts: (Detail A and C, Detail B, Detail D).

The operating idea is as follows
Detail B.

A carpet (15), (f 5), receives the sorted tobacco leaves. I1 is driven by the roller (13) which ensures the movement of the belt (15). The mat (15) passes through the wandering roller (19), changes orientation by the roller (14), and is stretched by the roller (18), at the end of the lever (17) which is articulated in (16 ).

 To create the sheets of sheets, the mat (15) must move above the mold (113).

 This back and forth movement is created by the device (f 6).

 The drive of the assembly (f 6) is ensured by a transmission chain which acts on the pinion (21), integral with the axis (28), the roller (13), the axis (37) , and the pinion (34). Thus is created the rotation of the roller (13), yes ensures the movement of the carpet (15).

 The sprockets (21) and (34) respectively support a chain which drives the sprocket (20) for (21), and the sprocket (33) for (34).

 (20) and (33) are respectively integral with the axes (27) and (36).

The axes (27) and (36) are respectively integral with the pinions (23) and (30).

This each receives a handling chain type "SEDIS", registered trademark, in steps of 50, which drives the pinions (25) and (29).

 Each of the chains has a link (24) and (32), which drive with the roller (19), along two open grooves in the parts (12), (f 7), according to a stroke "L".

 Thus the roller (19) comes and goes above the mold (113).

 In addition, the pitch diameters of the pinions (24.25) and (29.30) are equal to the diameter of the roller (13). Thus during the period when the roller (19) advances, the linear speeds of the belt (15) and of the advancement of the roller (19) being identical, the roller (19) does not rotate around its axis, thus spilling no leaf.

This dead time in loading will be used to change the mold when the previous one is full.

 Conversely when the roller (19) moves back, the linear speeds of the roller (13) and of the displacement of the roller (19) accumulate and the sheet of sheets collected by the belt (15) is deposited in the present mold.

Ib)
Detail A and C.

In order to prevent the harvested leaves from falling loose, due to too high a height in the mold, a system for raising the movable bottom of the mold is put in place, these are details A and C.

 The raising system of the scrapers (5) and (5 '), arranged on either side of the mold, raise the bottom (47) by the scrapers (46), (see operation of the mold below).

The scraper (5) is guided on the upright (2) of the distributor frame, the translational movement is given by the bronze nut (11), mounted tight in the steel piece (7), which is guided in rotation in the bearings (9) and
(10), a crown (8) transmits the movement of an electric motor.

The bronze nut (11) rotates around a square pitch worm (6) which is stopped in rotation by a pin (X), in the part (3), welded to (5) by the part ( 4).

 The transmission of movement between the scraper (5) and (5 ') is given by a chain (Y).

 Thus the scrapers (5) and (5 ') move in translation on their respective uprights.

Ic)
Detail D.

It is (-f8) the mold receiving base on the distributor (101).

The angles (39) and (39 ') are slides. The parts (42) and (42 ') are stops of the mold which are erased by a top-down action on the pedal (40). A spring acts on the parts (39) and (39 '), to keep them raised in the rest position.

Id)
Device automation (101).

In order to obtain automatic operation of the device, it is necessary to add to it an electromechanical automation system for the operation of the scrapers (5) and (5 ′).

 Automation of the dispatcher.

To carry out the automation, we need to place four sensors - P B Scrapers: Low point Scraper.

- P H Scrapers: High Scraper Point.

- P B Tensioners: Tensioner Low Point, detection of the rear position of the belt.

- PRC: Cash presence, presence of a mold under the device (101), and
PRC ': detection of the passage of the mold under the distributor (101).

 In the rest position, the scrapers (5) and (5 ') are in the low position. When the mold is released under the apparatus, the latter actuates the contact (P R C ') in passing, then (P R C) which remains actuated as long as the mold is present.

 (P R C ') will power the relay (Z) through the contacts (P H R) and (r t) which are closed at rest. A self-supply contact of (Z): (z) closes, the scrapers move to the high position. The motor is no longer supplied with power (P H R).

 The filling of the mold begins, the conveyor moves forward, backs up by depositing a sheet of leaves, activates the contact (PBT) which feeds (RT) through (PRC), (PBR), (rt x ''), (z) . The instantaneous self-supply contact closes, (R T) is supplied for x ", the time necessary for the descent of the scrapers, of a thickness of sheets.

So on until a low position of the scrapers and therefore of the bottom of the mold.

IIa)
Operation of the packaging mold (113).

 It is a box whose internal dimensions are in length and width, the dimensions of the bales standardized by the S.E.I.T.A. The height of the box is approximately twice the standard height, in order to contain the sufficient quantity of tobacco when the bale is pressed.

 This box is fitted with swivel casters so that it can be moved easily.

On the front, a door (48) opens to allow the tobacco ball to be released easily.

The movable bottom (47) is used for automatic loading of the mold on the distributor.

The bottom is guided in four places on two opposite sides, as shown in detail G.

A cylinder (51) on which the axes (49) and (52) are welded, slides along an axis (50).

The axis (49) supports the movable bottom (47), while the axis (52) receives a scraper (46).

In this way the bottom slides freely in the mold.

IIIa)
The press for making tobacco bales.

Once the mold is filled, it is a question of making a tobacco ball.

In general, the frame of the press (110) is very similar to that of the distributor in its dimensions and also in the fact that the press is equipped - with the same mechanical system for raising the scrapers, except for the stroke (see
detail A and C - paragraph I b).

- a receiving base - dental (see detail D - Fig. 8 and 9 - paragraph
phe I c).

- At the axis between the posts of the frame, there is a press plate (44), which
is guided by two axes (43) and (43 '), which slide in rings in
bronze, through the two transverse beams.

 Thus, the plate is stopped in rotation but guided in translation.

The translational movement is given by an electric motor, and the
same system as the scrapers (see detail A).

- The operation of this press is semi automatic, i.e. it is
necessary to have manual intervention in the middle of the cycle, to
attach the links of the ball and restart the electromechanical cycle.

III b)
Operating cycle.

After presenting the mold under the press, you must start the cycle by pressing "start".

The press descends to a predetermined height.

The cycle is stopped for an indefinite time, to allow the person to bind the links of the tobacco ball.

The cycle is then restarted by the "press up" button. The press returns to its initial position.

 Y "later, the scrapers rise to a predetermined height.

With the scrapers stopped in the high position, the person extracts the bale, then releases the mold from the press.

The scrapers automatically descend to their initial position.

 Electromechanical scheme operation.

 Press automation.

When a box is presented under the press, the contacts (P R C a) and (R a z) are actuated. By pressing "Ma", the relay of (Pr) is energized via (P B P), (m p), (P M F), which are at rest and self-energized by (d p e).

The press goes down.

We arrive at (P B P), the press stops.

The cycle is interrupted.

By pressing (Mo Pr), the cycle is restarted.

(P B P) being actuated when pressing "press up", (R T E) is supplied and self-supplied by (r t e).

At the same time, the relay (Mo Pr) is supplied via (P H P) and (d p 1), it self-supplies pat (m p).

The press goes up
Y '' afterwards (rt) closes, supplying the "bottom-up" relay with (df 1).

Arrived respectively in (P H F) and (P M P), (R t) and (Mo Pr) relax, as well as (Mo Fo).

 The press and the scrapers stop.

The mold is removed from below the press. Cash register presence and (R A z) relax (De Fo) is supplied by (P B F) and (m f).

The scrapers descend to (P B F), (De Fo) is released.

 The cycle is over.

Claims (8)

 1) Device for making a tobacco bale in a semi-automatic manner at the outlet of a sorting chain characterized in that it comprises an apparatus (101), intended to load a mold (113), which once full , is present in the press (110).  2) Device for making a tobacco bale in a semi-automatic manner at the outlet of a sorting chain according to the preceding claims characterized by the loading of the mold by a mat (15), which receives the sorted tobacco leaves, mu by a casing advancing in rotation by the roller (13) and in translation by a chain handling system which ensures the displacement in translation of the roller (19).  3) Device for making a tobacco bale in a semi-automatic manner at the outlet of a sorting chain according to the preceding claims, characterized by a system for raising the scrapers on the mold loading device, by a screw / nut guided in translation on the uprights of the frame, moved by an electric motor.  4) Device for making a tobacco bale in a semi-automatic manner at the outlet of a sorting chain according to the preceding claims characterized by a base for receiving a mold (113), at the end of the slides (39) and (39 '). The parts (42) and (42 ') are stops for retaining the mold by action on the pedal (40).  5) Device for making a tobacco bale in a semi-automatic manner at the outlet of a sorting chain according to the preceding claims characterized by an electromechanical system for automating the device (101), in a fully automatic manner. The relay (RT) provided with timed auxiliary contacts is actuated when a mold is present (PRC actuated), that the wandering roller will repert forward (action on PBT), that (PBR) and (z, electrical safety) allow it , x "after (rtx") [tempo auxiliary contact of (RT)], opens and cuts the power to (RT), hence the control of the descent operating time by (RT).  Relay (Z) is activated when (P R C ') is, and when (P H R) and (r t, electrical safety) allow it. (z, instantaneous contact of Z), activates "climb".  6) Device for making a tobacco bale in a semi-automatic manner at the outlet of a sorting chain according to the preceding claims characterized by an apparatus (113) for transporting tobacco leaves from the apparatus (101) to the device (110) being of sufficient size to, after pressing, obtain a tobacco ball of the dimensions standardized by SEITA  I1 is provided with a door, a movable bottom to allow the release of the ball and rollers to move the mold.  7) Device for making a tobacco bale in a semi-automatic manner at the outlet of a sorting chain according to the preceding claims characterized by an apparatus for pressing the tobacco bale in a general manner of construction, identical to the device (101), (see 3 and 4 of the claims), having a press plate (44), guided in translation by the guides (43) and (43 '), is moved in translation by a screw / nut and an electric motor.  8) Device for making a tobacco bale in a semi-automatic manner at the outlet of a sorting chain according to the preceding claims, characterized by an electromechanical system for automating the device (110), in a semi-automatic manner. (Pr Ca) is activated by the presence of the mold (113). (De Pr) is activated by a manual action of "Ma", if (P B P), (P H F), (m p, electrical safety) allow it.  By the same manual action on (M p), (Mo Pr) is activated and self-powered by (m p) until (P H P, Point Haut Pressoir) is reached. (De Pr) self-feeds by (dp 2), (De Pr) releases when (PBP) is reached, (RTE) relay with timed auxiliary contacts can only feed when (PBP) is reached by an action manual on (MP) and it is self-powered by (rte, instantaneous contact), The absence of a mold under the device (Fig. 10), closes (R A z) which actuates (De Fo) until (P B F, Point Bas Fond) is reached. (d p 1) is an electrical safety device), (Mo Fo) is activated Y '' after (R Te), by (r t e Y ''),  NOTE: (Mo Fo) and (De Fo) [up and down bottom].  (From Pr) and (Mo Pr) [press press up and down].