DE2012559A1 - Automatic sack or bag filling machine - Google Patents

Description

6165-3 J? .L. Smidtb & Co. A / S.

Copenhagen-Valby / Denmark, Yigerslev Alle 77

Automatic sack or bag filling machine

Priority: March 19, 1969, England No. 14512/69

The invention relates to an automatic sack or bag filling machine with a rotatable container for powder or granulate material to be filled or packaged and having a plurality of combined filling and weighing devices, each one of which is mounted around the container to hold a bag or sack intended for filling mouthpiece, communicating through a conduit to an outlet of the container, means to prevent the flow of the To influence the material to be filled through the line and has a bag or sack storage mechanism, wherein the filling and weighing units by the weight of the material in a pouch carried by the mouthpiece in use or sack around a linkage or support point are movable between end positions.

0QSÖ4S / 1S2§

Such machines serve, in particular for filling so-called / entilsacks.

During the rotation or rotation of such an automatic An operator brings the sack or bag filling machine empty sacks or pouches on the filling nozzles moving past them, and the operations of littering, Weighing and, in some cases, checking the weight of the Sacks or bags and the unloading or unloading of the filled bags are moved by one rotation of the container Vertical axis carried out. Sack or bag filling machines of this type usually have twelve to fourteen mouthpieces with associated combined filling and weighing devices, which are arranged on the circumference of the .Behälters «, with all Arrangements with leachate also interact with the container. The material to be packaged or filled is whirled up in the container or brought into a fluidized bed, and usually by ventilation or Jjuf t ζ ζ ζ duct facilities which are mounted in the bottom of the container to make the solid material flowable in some cases The fluidity of the material is determined by mechanical stirrers increased, which stir the contents of the container during the notation in order to bring the material into such a state, that it is under the influence of gravity through the outlet openings can flow out when the flow channel is open through the lines.

The combined filling and weighing devices of the known automatic sack or bag filling machines comprise complicated mechanical arrangements which include control elements to ensure that the filling, weighing and iän. blade operations are carried out precisely, and u & - to ensure that the unloaded or unloaded bags or sacks have the exact u-e weight. Since, however, separate control and monitoring devices have been used up to now in order to monitor each individual process of the Maeohin

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or to control, is the performance of such arrangements so far not been satisfactory ..

Attaching empty sacks or bags to the filling mouthpieces can be performed automatically by using ancillary equipment so that no operator is required, which also leads to the fact that the operating speed of the packaging or filling machine increases can be. In this ifall it is essential that the combined Filling and weighing devices are precisely controlled and monitored, so that the risk of unloading or unloading of sacks or bags with underweight or the inside or unloading bags while the flow channel is through the lines are still open is reduced to a minimum.

The invention is based on the object of a Jjiillmaschine to create which do not match the well-known Jj'üllmasch inen is afflicted with inherent inadequacies.

The device according to the invention is used to achieve this object characterized in that each combined filling and weighing device contains a single cam-controlled strut, which is ineffective if there is no sack or bag on the mouthpiece, but which is so designed and arranged is that through it both the means for controlling the flow of material through the conduit and the mechanism for unloading or unloading the respective bags or sacks depending on the angular or rotary position of the used Container and is controllable as a function of the weight of the material in the bag or sack.

By doing these two processes through a single organ, namely, the cam-controlled strut, is effectively ensured that the two operations from each other and on the material weight of the respective sack or

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.Bag are made dependent, which means that the Flow channel is influenced by the line in such a way that the line is closed when the Filling and weighing device by the material weight in the bag or sack has been moved to a certain extent.

The filling and weighing devices are counterbalanced balanced, which ensures that the bags or sacks are filled with exactly the correct weight, i.e. the filling and weighing equipment is balanced so that the exact weight of one Bag despite the slight time delay between the movement of the filling and weighing device and the one from it resulting closure of the flow channel through the line is obtained.

A preferred embodiment of the invention provides that the cam operated strut is mechanically connected to the device for controlling the flow of material through the Line can be locked in such a way that the mechanism for unloading or unloading cannot be actuated by the strut when the line is not closed.

Never the invention will now be described in more detail with reference to the accompanying drawing, in which a possible embodiment is shown in an exemplary manner. Ee show:

J ^ ig. 1 a vertical section through a part of the bag filling and .Bag weighing machine with a filling and weighing device which is in the position which takes it before the filling of a bag or sack has begun;

J? 'Ig. 2 one of the> 'ig. 1 identical view, but with the Filling and weighing mechanism is in a second filling position;

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jj'ig. 3 is a similar view showing the filling and weighing equipment displays during the unloading or unloading of a bag or sack;

ü'ig. 4 is a comparable view of a detail of the outlet opening or discharge arrangement, wherein the filling nozzle is in a position for receiving an empty one Bag or sack is located and

Yy'ig. 5 a schematic representation of rails which control or influence the mode of operation of the machine.

xn den ü'iguren is a section of a material storage container 1 shown. The container 1 has a base 2 through which air is generated by means of devices not shown a fluidized bed or a fluidized bed can be blown into the material stored in the container. The container has outflow openings 3 in its side wall, with a filling and weighing device 4 on the side wall. is suspended on a bracket arm 5 attached to the outside of the side wall. A lever rod 7 is of an ai the arm 5 arranged articulation or support point 6 carried, and this lever rod carries at one end (not shown) Counterweights and at their other end a vertical bar 8, which forms the main element of the filling and weighing unit » The bar 8 can be within certain ü-renseti in move in a substantially vertical direction. The lower end of the beam is connected to a (^ handlebar 9 »which is attached to your has pivot pins 10 and 11 at both ends connected to the bottom of the container. The beam 8 is in motion between upper and lower © E limits or »stops limited. The upper limit is formed by a stop 12 which rests against the bottom 2 of the container comes while the lower limit © by a fixed. attack 13 is formed.

The bar 8 carries a filling ring 14 * which on the Pivot 10 mounted and around the pivot versa hwaalöar

öß984S / 122g

is, wherein the filling mouthpiece 14 is prevented from pivoting downwards about its pivot point by the contact of a rigidly or firmly connected to the mouthpiece i'eiles against one end of a lever arm 15 which is mounted on a shaft 16 on the beam 8 and with a hook 15a is provided. A claw 17 is also pivotably mounted on the shaft 16, the movement of which is limited in the clockwise direction by an adjustable stop (not shown) on the lever arm 15; is like it Jj'ig. 1 shows, in a position in which the .Klaue 17 just touches the filling mouthpiece 14. The ulaue 17 prevents a bag or sack 18 to be filled from sliding or sliding down from the mouthpiece 14 which is connected to the opening 3 via a flexible line 19 mounted on the niank I.

The flow through the line 19 can be controlled or influenced by compressing the line between a rigid, fixed stop and a spring-loaded rod 21, which is displaceable in a straight line and guided by a holder 22 mounted on the container wall. The flow opening through the line 19 is controlled or adjusted by the rod 21 by means of a strut 23 which has a stop extending into a slot in the rod 21 and is pivotably suspended on a lever 24 which has a guide roller 25 which During the rotation of the machine a rail 26 follows or runs on it, which has a cam profile or cam section for lifting the pulley (u'ig. 2) , uie strut 23 has a hook 23a and an abutment 23b. The lever 24 is mounted on a support strut 27 on the wall of the ßebälbero I. Kin weLterer at the support strut 27 mounted lever 20 controls DLE swirling motion of the strut 23 _f around their pivot point on the lever 24 and slide position of the lever 28 is controlled ihreraetto by a hook l ^{i ()} and determines that a lever. '> 0 suspended Lt <which can be swiveled on the wall ues container attached l.'t,

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The lever 30 carries a guide roller 31, which during the notation or rotation of the machine on a rail 32 runs or is guided by it, which is responsible for lifting the bell 31 (Jj'ig. 2) with a cam profile or with cam sections is provided. If the hell 31, like it in Jj'ig. 1 of the JTaIl is, is lifted from the rail 32, the lever 30 is supported on a stop member 33 arranged on the bar 8 away. The force exerted by the lever 30 on the beam 8 can be increased or decreased depending on the requirements are loaded by the lever on a pin 35 with weights 34 or is relieved of these weights.

The angular or pivoting movement of the strut 23 is also controlled by a pivotable safety device mounted on the container 36 controlled or determined.

The support strut 27 carries a ratchet or ratchet system 37, which can come into engagement with a pin 38 on the beam 8.

During the operation of the filling and weighing device pushes an operator over or on the empty sacks or bags 18 while the machine is rotating about its vertical axis the filling mouthpieces 14 »and the bag or sack is automatically filled in two stages during one revolution of the machine, weighed and accepted.

When a bag or sack is pushed over the mouthpiece, the iCLaue 17 is moved counterclockwise, whereby the claw, however, lies tightly against the bag or sack and holds it in the position shown. The bag sets the safety device 3b in operation so that the strut 23 can lift the rod 21. If there is no bag or sack on or is located on the mouthpiece, the safety device, which is weightf3 loaded by a counter-weave, presses the strut 23, like it in .big. 1 is shown in Unrzeigerribtung,

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so that it cannot come into engagement with the rod 21, as it is in jj'ig. 4 is shown.

In order to set the first j'll stroke or the first j'll sequence in (long), the roller 25 is raised by a crouching section of the guide rail 26 so that the strut 23 engages the rod 21 with the jslinketi- or locking pawl system 37 J) The rod is held in its upper position by the ratchet mechanism, which is locked by the pin 3ü mounted on the beam. The .line 9 is completely open, and the material brought into a fluidized bed or! ″ Bed layer in the container flows into the .bag or sack. V / now the one with the weight of the? Lever 30 and the bag bzv /. Sack's loaded beam 0 has a thorn counterweight on the plane 7 has reached a corresponding weight, the J3alkeu sinks into a sub-red position determined by the stop 13. While the bar descends, the pin 28 releases the pawl P1 , whereby the rod 21 is released, which, pressed by a piping nncM uni-on, compresses the line 19 between your end of the rod and the stop 20, causing the flow of material. Jh-'fch the line is interrupted.

In the next stage of the filling process, the package 31 raised by the rail 32 to keep the jialken from the through the weights 34 relieve the pressure exerted, whereby Weight of the weighing unit 4 is reduced, which then moves upwards, ura against the stop 12 on the .Boden des JiehUltere to come to the facility,

When the itolle? Fj is acted upon or put into operation, the rod 21 is raised again in order to be locked by the clinker raeohuniDmuß 37, but this lock is in a lower position! ⁰ Q as in eo iu J ¹ Ig. 2 fjeseigt int, otattfludet, ao that for a second stage the gutter or refill of the bag 3 or sack is filled with a limited or smaller flow channel through the line 1'5

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will. As soon as the bar 8 sinks again as a result of the increasing weight of the bag or sack, the. Ratchet mechanism again released from the pin 38, und.der flow channel through the line is accordingly again closed. .

The bag or sack has now reached its exact weight and can be removed from the mouthpiece. The acceptance or delivery takes place through the same strut 23, which the Has caused or effected the opening and closing of the line. The Holle 31 is through another nook section the rail 32 is raised so far that the lever 28 is gripped by the hook 29 and released by the strut 23. The strut 23 thereby pivots under the influence of gravity in the clockwise direction, as in the drawing is shown to come into engagement with the lever arm 15 with the hook 23a grasping the hook 15a, whereupon the roller 25 continues to be raised by the rail 26. (i'ig. 3}

The strut 23, the hook 23a of which with the associated hook 15a is engaged on the lever arm 15, rotates the lever arm together with the claw 17 to release the filling mouthpiece, which moves under the influence of the weight of the filled bag or sack down, with the mouthpiece around the The pin or the axis 10 is pivoted. The bag or sack slides down from the mouthpiece and is thereby dumped.

The amount released by the weight of the filled bag or sack The filling mouthpiece automatically returns to its starting position back, since the mouthpiece is counterbalanced by a weight or by Jj'edern (not shown).

The container 1, together with the filling and weighing device, performed one complete revolution during the processes described and the unit is now ready again to load the next empty sack or bag on aua @ b SSn ₅ *

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like it in Jj'ig. 4 is shown.

i? 'in the event that the rod 21 is out of one or the other Basically not after the first or the second filling stage should have been released by the link mechanism, the sack or bag cannot be automatically unloaded or unloaded. When the flow channel through the line is open in one of the two positions of the rod, the strut 23 is prevented from moving in a clockwise direction move and initiate the unloading or unloading process, since the abutment 23b, the strut 23 in the slot of the rod locked.

As can be seen from the above description of the filling process, the closing of the flow channel through the Line dttrch controls the elevation of the pin 28, i. by the position of the bar 8, which in turn depends on the weight of the sack or bag. Unless the line 19 should be blocked by accumulated material the contents of the bag do not reach the predetermined weight, and the rod will not be released to return to its closed position; rather, the rod becomes lock the strut 23 and thereby prevent the unloading or unloading of bags or sacks that are not accurate Have reached weight.

in cowardly. 5 are the positions or arrangements of the rails 26 and 32 and their Nockenabnehnitte dargeoteil. Win Bottling and Wtegemechaniaaius 4 is about container I in its Auagatigs- or, starting position shown. During one rotation in the direction indicated by the arrow, the mechanism brought into contact with the stationary rails in the manner described above.

The filling process can preferably also have more than two filling stages or just a single filling stage, where-

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"In the case of sieve, however, the filling of the bags or sacks in two stages, as described in the illustrated and described exemplary embodiments, has proven to be the most advantageous process sequence, since the initial filling process with a completely open line is very fast After the initial filling or after the first (i ⁾ filling stage, the material can settle in the sack or bag and the air used to generate the fluidized bed flows out of the sack or sack. Mechanical equipment or vibrators for shaking the sacks or sacks can be assigned to accelerate and improve the settling of the material in the sacks or sacks.During the second stage of the filling process, the line is only partially open, and the The flow rate of the material is so low that the amount of material supplied to the bag or sack can be adjusted very precisely.

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Claims (2)

Claims M .1 Automatic sack or bag filling machine with one rotatable container for powder or granular material to be filled or packaged and with several attached around the container, combined Filling and weighing devices, each of which has a filling nozzle intended to hold a bag or sack, that through a line with an outlet of the "Container is connected, facilities to the To influence the flow of the material to be filled through the line, and a bag or sack unloading mechanism having, wherein the filling and weighing device by the weight of the material in one of the used mouthpiece, bag or sack carried around an articulation or support point between end positions are movable, characterized in that each combined filling and weighing device (4) has a single, contains cam-controlled strut (23) which, when there is no sack or bag (18) on the mouthpiece (H), is ineffective, but which is designed and fc is that through it both the device (21) for controlling the flow of material through the line (19) as well as the mechanism for unloading and unloading the respective bag or sack depending on the angular or rotary position of the container used (1) and is controllable as a function of the weight of the material in the bag or sack. 2. Automatic filling machine according to claim 1, characterized in that that the nooken-controlled strut (23) mechanically with the device (21) for the control deo material bus can be locked through the cable (19) is such that through the strut (23) the Meohanismun 009845/1220 for lint- or unloading, cannot be actuated when the line (19) is not closed. Automatic filling machine according to claim 1 or 2, characterized characterized in that the line (19) is flexible, and the device for controlling the material flow through the line (19) a fixed stop (20) and a movable member (21) by which the line (19) can be compressed against the fixed stop (20) is. 009846/1228