DE10002904A1 - System for controlled removal of blanks transported on conveyor belt has blanks fed to conveyor belt system by deflector, eccentric movement when using elastic conveyor belt, by deflector finger, or taken up by suction roller - Google Patents

Abstract

The blanks(3) are fed to a conveyor belt system by a deflector(5), or by an eccentric movement when using an elastic conveyor belt, or by a deflector finger, or is taken up by a suction roller(6). The suction roller has a rotor with holes for the suction of the blanks and a stator located in the rotor with holes and circumferential slots to build up a vacuum through its axis during axial movement of the stator.

Description

When producing blanks, the finished parts are often displayed on a conveyor belt. Depending on the production speed, this is a Scale flow or a material flow of individual blanks. The withdrawal from Conveyor belt and subsequent palletizing is done either by manual Removal or by automatic formation of packages, which then the Palletizing robots are fed. An example of this is the production of Cigarette blanks using the inline process: rotogravure rotary die cutter or flat punch scale belt delivery.

Also in the multi-stage production of blanks with the production stages: Sheet printing machine flat punch gluing machine, the delivery takes place on Conveyor belts.

Securing one prepares with increasing production speed constant quality increasing difficulties. By taking samples an error is usually recognized relatively late. Eliminating Inadmissible false copies are made by subsequent sorting with large Effort and does not guarantee the reliable elimination of errors. In the multi-stage production, whereby here the editions are generally smaller than in inline production, the danger comes as an aggravating element of blends if there are several in one production area Similar orders are made at the same time. This applies in particular to the  Manufacture of packaging materials for pharmaceutical purposes. It has Enforcement of ISO 2000 brought significant progress, but the effort for eliminating blanks is sometimes quite significant.

With an effort to make the electronics usable to solve these problems scanners that use the error spectrum can be set and reliably detect the errors. The scanner reports by an acoustic or visual signal so that the surgeon can react can. However, this presupposes that the station remains constantly occupied and its high one Attention is given. However, the removal of blanks remains problematic because this only at the stacker or at the end of the delivery belt can take place, where then the error or errors from a material package have to be looked for. Errors are often only recognized when the Random samples were recognized and then a full pallet had to be cut manually sorted with the Risoko, under certain circumstances not to find all errors.

The invention relates to a device that can take blanks individually or in large numbers one after the other from the material flow of the conveyor belt. The impulse for the removal function can take place both from the scanner, as well as from a stored program, or by a manual command. The following removal positions can be achieved in this way:

• 1. Withdrawal in the event of errors = committee exit
• 2. Sampling program = sampling
• 3. Manual command = Prod. Control z. B. in the early stages of Production or changes

The delivery is to be carried out in such a way that the blanks of the 3 described above Criteria can be interpreted separately. It can be determined that the  Sampling overlaps the other criteria, i.e. with all Extraction states enforced.

The scanner is currently in rotary printing after the last printing unit arranged. The implementation of the concept proposed here provides that To transfer the shingled stream onto an acceleration conveyor suction belt. This is state of the art. The scanner scans the copies on this Accelerator belt, where the specimens are descaled, i.e. individually Scanners happen. Here is the distance from the blank to the next one Operation precisely determined by the scanner and a timely function of the Withdrawal operation ensured.

Fig. 1 shows the proposed concept.

Pos. 1 shows the stream of flakes, as it is generated after the rotary printing and subsequent punching or creasing process, or after the gluing station of a gluing machine. The blanks (item 3 ) are taken over by the acceleration belt (item 2 ) and pulled apart so that the scanner (item 4 ) can scan individually. The drive (item 8 ) receives the command to move the deflector (item 5 ) upwards, so that the suction roller (item 6 ) can take over the cutting. If there is no disturbance or request for removal, the cuts continue on the delivery belt (item 7 ) for stack formation or for manual removal.

Fig. 2 shows the bearing of the deflector element and the movement element for the movement of the deflector. Here are:
Pos. 8 drive for deflector
Item 5 deflector
Pos. 9 Storage of the deflector

Depending on the cut size, material quality and depending on the Production speed, the cutting rejection and its takeover be carried out differently by a downstream transport system.

Fig. 3 shows the side view of the position of the deflector with the discharge conveyor belt, the point of attack of the deflector movement and the bearing of the deflector.

Fig. 4 shows a rejection using an elastic conveyor belt (item 10 ). An eccentric (item 11 ) or pestle bulges this conveyor belt so that the cut can be diverted upwards by a finger (item 12 ) and transferred to a conveyor belt (item 13 ).

Fig. 5 shows how the suction roll works. The suction roller always receives the same peripheral speed as the acceleration conveyor belt (item 2 ) via the drive, so that there is no friction between the belt with the blank and the suction belt. The suction roller (pos. 6 ) is supported stably and with little play via a stable pedestal (pos. 15 ) and roller bearings (pos. 19 ). The suction roll has holes (item 14 ) through which a vacuum can be built up in the fixed vacuum stator. The bores of the rotor and the circumferential slots of the stator are offset from one another such that a vacuum can act on the rotor surface due to the horizontal movement of the stator through the bores of the rotor and the slots of the stator. For this purpose, the stator is mounted on ball bushings (item 16 ). The stator is moved horizontally by a suitable drive element (item 17 )

Fig. 6 shows another variant of the vacuum control (item 18 ). In contrast to the "suction roller stator" solution (item 20 ), another variant of the vacuum control is shown in Fig. 6 with (item 18 ). In contrast to the solution "suction roller stator" (item 20 ), the vacuum is controlled according to item 18 by the fact that the previous stator now also rotates. Both bodies, suction roll and vacuum drum are supported by a hollow axle and run at the same peripheral speed. The control takes place by turning the vacuum drum to the suction roll in the circumferential direction. Instead of the double-axis bearing, a separate opposite bearing can also be selected.

Positions

Pos.

 1

Scale flow
Pos.

 2

Acceleration band
Pos.

 3rd

Cutting
Pos.

 4

scanner
Pos.

 5

Deflector
Pos.

 6

Suction roll
Pos.

 7

Discharge belt
Pos.

 8th

Drive for deflectors
Pos.

 9

Storage of the deflector
Pos.

 10th

Elastic conveyor belt
Pos.

 11

Eccentric
Pos.

 12th

Deflector fingers
Pos.

 13

Conveyor belt

Fig.

4

Pos.

 14

Holes
Pos.

 15

Vacuum stator
Pos.

 16

Ball bushings
Pos.

 17th

Drive element for vacuum stator
Pos.

 18th

Control of the vacuum by circumferential adjustment of the rotor to the rotating vacuum cylinder
Pos.

 19th

roller bearing
Pos.

 20th

Solution suction roll stator
Pos.

 21

Bearing block

Claims (4)

1. Device for the controlled removal of blanks after a Production process, such as As punching, creasing, embossing, folding or and gluing on transported on a conveyor belt for palletizing or other processing become. 2. Apparatus according to claim 1), characterized in that the blanks via a deflector (item 5 ) or by an eccentric movement (item 11 ) when using an elastic conveyor belt (item 10 ) or a finger (item 12 ) Conveyor belt system (item 13 ) fed, or taken over by a suction roller (item 6 ). 3. Suction roll suction ( Fig. 5 and Fig. 6) characterized by a rotating rotor (item 6 ) with holes for sucking the blanks and a stator arranged in the rotor (item 15 ) with holes and circumferential slots, over whose axis the vacuum is built up, is mounted in ball bushings or other suitable bearing elements, and can be moved axially via a drive (item 17 ) in order to allow the vacuum to act through the holes in the rotor or to switch it off. 4. The "suction roller" variant should also be protected, in which the stator according to claim 3 is replaced by a rotating body which baptizes at the same peripheral speed as the rotor. The vacuum control takes place in this arrangement in the circumferential direction of the rotating body. Both rotating cylinders can be mounted on one side via the hollow axis or by separate storage as shown in Fig. 5