CA2475513A1 - Method for controlling a packaging machine - Google Patents

Method for controlling a packaging machine Download PDF

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Publication number
CA2475513A1
CA2475513A1 CA002475513A CA2475513A CA2475513A1 CA 2475513 A1 CA2475513 A1 CA 2475513A1 CA 002475513 A CA002475513 A CA 002475513A CA 2475513 A CA2475513 A CA 2475513A CA 2475513 A1 CA2475513 A1 CA 2475513A1
Authority
CA
Canada
Prior art keywords
time
product
packaging
leaflet
packaging machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA002475513A
Other languages
French (fr)
Inventor
Wolfgang Herkel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IWK Verpackungstechnik GmbH
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2475513A1 publication Critical patent/CA2475513A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/20Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for adding cards, coupons or other inserts to package contents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B57/00Automatic control, checking, warning, or safety devices
    • B65B57/10Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged
    • B65B57/16Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged and operating to stop, or to control the speed of, the machine as a whole

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Abstract

The invention relates to a method for controlling a packaging machine, which comprises a product conveyor for conveying a product and a packaging conveyo r for conveying a packaging. Said conveyors run, in sections, parallel and synchronous to one another whereby enabling the product to be introduced int o the packaging inside a transfer station. The packaging machine additionally comprises an including conveyor for including an inclusion part to be enclos ed with the product, for example, a pamphlet or a measuring scoop. A data memor y provided in the form of a shift register contains different state data and control data pertaining to the packaging units consisting of the product, packaging and the inclusion part. The data, at time t~0, are displaced in th e shift register in a clocked manner. At at least time t~p, which is given by an initiator, a monitoring or processing action is initiated on the inclusion part, whereby time t~p can be shifted with regard to time t~0. The relative position of time t~p with regard to time t~0 is checked, and time t~p is shifted when it is located within a tolerance period of time T formed around time t~0.

Description

Method for Controlling a Packaging Machine The invention concerns a method for controlling a packaging machine comprising a product conveyor for a product and a package conveyor for a package which partially extend parallel and synchronously with respect to each other such that the product can be inserted into a package at a transfer station, and with a conveyor for an additional part to be added to the product, e.g. a leaflet or a dosing spoon, and having a data storage in the form of a shift register which contains various state and control data of packaging units which include the product, the package and an additional part, wherein the data is displaced in a clocked manner in the shift register at a point in time to, and with at least one point in time tP
given by an initiator at which a control or processing action on the additional part is started, wherein the point in time tP can be adjusted relative to the point in time to in dependence on the product and/or the package and/or the additional part.
For packaging products in a transfer device of a packaging machine, the motions of a first circulating package conveyor for the package, e.g. a so-called folding box chain, and of a second circulating product conveyor for the products, e.g. a so-called product chain, are conventionally synchronized such that the product can be inserted laterally into the folding box transversely to the direction of motion of the chains. To change the format, the two chains can be adjusted relative to each other.
For certain products, e.g. medication, an additional part which may e.g.
be a leaflet, a side note or a dosing spoon may have to be inserted into the package. A leaflet is taken below as an example of this additional part.
The packaging machine has a further circulating additional part conveyor, e.g. a so-called leaflet tong chain which carries several tong-tike holders which each receive and clamp one leaflet. A leaflet to be inserted into the package is moved between the product and the folding box by the leaflet tong chain, and carried along by the product through the lateral inserting motion thereof to be introduced into the folding box, wherein the tong-like holder opens as soon as the product abuts the leaflet.
The packaging machine stores a data set for each packaging unit which comprises the product, the folding box and the leaflet, and which contains all essential state and control data of the packaging unit. Since a plurality of packaging units are simultaneously processed in and run through the packaging machine, the data sets are conventionally filed in a common data storage. The data storage is designed as a shift register, wherein the data sets are displaced, i.e. shifted, within the shift register in a clocked manner in accordance with the working cycle of the machine, i.e. the changing position of the associated packaging unit in the packaging machine up to the ejecting station. The shift register is clocked via a shift cycle which is usually tapped by the drive of the product chain.
To provide the folded leaflet, it must usually undergo several examination and processing steps. The leaflet must be received by a so-called leaflet apparatus from a leaflet pile of unfolded leaflets at a certain point in time (request time tp) and subsequently be folded. The leaflet must then be transferred to a tong-like holder of the leaflet tong chain at a predetermined point in time. Additionally, the correctness of the leaflet type must be checked through detection and evaluation of a code provided on the leaflet at a certain point in time within the leaflet apparatus. The point in time of introduction or initiation of the respective action is predetermined either via rotating mechanical cams which trigger an initiation signal at a certain rotation or via an electronic reproduction of a corresponding cam. The initiation signals are thereby only triggered if a previous examination of some data of the data set in the shift register indicates that the packaging unit is properly combined, i.e. that a product and a packaging are present.
A packaging machine must be able to process products and also packagings of various formats as well as various leaflet formats.
Depending on the product sizes, the packaging sizes and the leaflet sizes, the individual components of the transfer station of the packaging machine must be adjusted relative to each other. For format change, the leaflet apparatus and/or the leaflet tong chain are usually adjusted relative to the product chain and/or the folding box chain. This causes the points in time which are predetermined by one or more initiators or cams, to also be adjusted relative to the shift time to of the shift register which defines the start of a processing cycle of the packaging machine. The request time tp for the leaflet from the leaflet pile is used as an example below, however, similar problems also occur at other times when a control or processing action on an additional part, e.g. a leaflet, is started.
Due to adjustment of the request time tp for the leaflet relative to the shift time to of the shift register, a situation may occur wherein the two points in time coincide or are at least sufficiently close to each other that the controller does not recognize and process them as two independent signals. This can result in incompatible control runs and inadmissible operating states which cause the packaging machine to switch off, signalling an error. To eliminate the error, the mechanical and electronic settings of the packaging machine and, in particular, of the leaflet apparatus relative to the product chain must be changed until a safe operating state is provided. Such an adjustment is possible, since there is a certain time tolerance during transfer of the leaflet to the tong-like holder of the leaflet tong chain. However, elimination of the error is demanding and has a disadvantageous effect on the efficiency of the packaging machine.
It is the underlying purpose of the invention to produce a method for controlling a packaging machine of the above-mentioned kind which reliably eliminates any error due to coinciding or unacceptably close points in time, as mentioned above.
This object is achieved in accordance with the invention in that the relative position of the request time tP for the leaflet relative to the shift time to of the shift register is examined and the time tP is shifted if it is within a tolerance period T about the point in time to.
After adjustment of the packaging machine through format change and associated adjustment of the request time tp for the leaflet relative to the shift time to of the shift register, a controller checks whether the point in time tP of the leaflet request coincides with the shift time to of the shift register or is at least sufficiently close that a conflict can be expected.
This is the case if the request time tP of the leaflet is within a predetermined tolerance period or interval T which is disposed about the shift time to of the shift register. If the examination shows that the request time tp of the leaflet is within the tolerance period T, the request time tP for the leaflet is automatically shifted by the controller. This shift is possible without influencing the operation of the packaging machine, since, during transfer of the leaflet to the tong-like holder of the leaflet tong chain, there is a certain time tolerance which is utilized in accordance with the invention. A
switching off of the packaging machine after format change due to incompatible operating states or control runs is thereby reliably prevented.

A quickly operating packaging machine performs approximately 450 working cycles per minute such that the cycle time is approximately 133.33 ms. The cycle time is the time interval which the control program requires for working. The cycle time may e.g. be 5ms. The tolerance period T around the shift time to of the shift register should therefore be at least 3% of the cycle time of the packaging machine, i.e. the request time tp of the leaflet should not coincide with the last 3% of the previous working cycle before the shift time to or the first 3% of the next working cycle after the shift time to. A value of ~10% of the cycle time of the packaging machine has proven to be reasonable as an upper limit for the tolerance period T. The tolerance period is preferably ~5% of the cycle time of the packaging machine.
If the controller determines that the request time tp is within the tolerance time T, the request time tp is shifted until it is outside of the tolerance time T. This shift is possible in both directions on the time axis, i.e. in the direction of an earlier or later point in time. In a preferred embodiment of the invention, the controller determines the two shifts oti and ot2 of the request time tp which are required to obtain a position outside of the tolerance time period T in both directions (earlier, later). The request time tp is subsequently shifted into the direction with less shift to obtain a position outside of the tolerance time T.
Further details and features of the invention can be extracted from the following description of an embodiment with reference to the drawing.
Fig. 1 shows the points in time to and tP on the time axis t in an uncritical arrangement before format adjustment;
Fig. 2 shows the points in time to and tP on the time axis t in a critical arrangement after format adjustment; and Fig. 3 shows the points in time to and tP on the time axis t in an uncritical arrangement after correction.
Fig. 1 shows a time axis t which shows a shift time to of the shift register which simultaneously also defines the start of a working cycle of the packaging machine. The time interval between a request time tP for a leaflet in a leaflet apparatus and the shift time to is sufficient, such that no critical operating states are generated in the packaging machine.
After format adjustment, wherein the temporal processes of the leaflet apparatus relative to the product chain are adjusted, the position of the request time tP of the leaflet relative to the shift time to of the shift register has also changed. The request time tP for the leaflet is now much closer to the shift time to of the shift register than before format adjustment (Fig. 2). When the format has been changed, a controller of the packaging machine checks whether the request time tP for the leaflet is within a tolerance period or interval T about the shift time to of the shift register which is ~5% of the cycle time of the packaging machine. The embodiment of Fig. 2 shows that the request time for the leaflet is within the tolerance period T. The controller subsequently determines a first time shift Otl which is required to shift the request time tp to an earlier position such that it is directly before the tolerance period T. A second time shift ot2 is correspondingly determined which is required to shift the request time tp to a later time, such that it is just outside of the tolerance period T. The two time shifts otl and ~t2 are compared and the leaflet apparatus is subsequently adjusted such that the request time tp is adjusted by the smaller value (absolute value) of the two determined time shifts Otl and Ot2 in the associated direction. In the embodiment shown ~t2«tl, which is why the request time tP is delayed by the time period Ot2 to a later time as shown in Fig. 3. In this state, in which the request time tP is now outside of the tolerance period T about the shift time to of the shift register after displacement, incompatible runs and operating states in the packaging machine due to excessively close initiation points or signals are reliably eliminated.

Claims (5)

Claims
1. Method for controlling a packaging machine which comprises a product conveyor for a product and a package conveyor for a package which extend, in sections, parallel and synchronous to each other, such that the product can be inserted into the package in a transfer station, and with a conveyor for an additional part to be added to the product, e.g. a leaflet or a dosing spoon, and comprising a data storage in the form of a shift register which contains various state and control data of packaging units which consist of the product, the package and an additional part, wherein the data is displaced in a clocked manner in the shift register at a point in time t o, and with at least one point in time t p at which a control or processing action on the additional part is started, wherein the point in time t p can be adjusted relative to the point in time to in dependence on the product and/or the package and/or the additional part, characterized in that the relative position between the time t p and the time to is examined and the time t p is shifted if it is within a tolerance period T about the time t o.
2. Method according to claim 1, characterized in that the time t p is shifted until it is outside of the tolerance period T.
3. Method according to claim 1 or 2, characterized in that the tolerance period T is ~3% to ~10% of the cycle time of the packaging machine.
4. Method according to claim 3, characterized in that the tolerance time T is ~5% of the cycle time of the packaging machine.
5. Method according to any one of the claims 2 through 4, characterized in that the shifts .DELTA.t1, .DELTA.t2 of the time t p which are required to obtain a position outside of the tolerance period T, are determined in both directions (earlier - later) and the time t p is shifted by the smaller of the two shifts .DELTA.t1, .DELTA.t2.
CA002475513A 2002-02-20 2003-01-23 Method for controlling a packaging machine Abandoned CA2475513A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10207096A DE10207096A1 (en) 2002-02-20 2002-02-20 Method of controlling a packaging machine, involves checking relative position of call time with regard to pushing time, with call time being shifted when it is within a tolerance time period
DE10207096.2 2002-02-20
PCT/EP2003/000663 WO2003070577A1 (en) 2002-02-20 2003-01-23 Method for controlling a packaging machine

Publications (1)

Publication Number Publication Date
CA2475513A1 true CA2475513A1 (en) 2003-08-28

Family

ID=27635184

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002475513A Abandoned CA2475513A1 (en) 2002-02-20 2003-01-23 Method for controlling a packaging machine

Country Status (9)

Country Link
US (1) US20050126127A1 (en)
EP (1) EP1476361A1 (en)
JP (1) JP2006505455A (en)
AU (1) AU2003205659A1 (en)
BR (1) BR0307789A (en)
CA (1) CA2475513A1 (en)
DE (1) DE10207096A1 (en)
MX (1) MXPA04007982A (en)
WO (1) WO2003070577A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006049801A1 (en) * 2006-10-23 2008-04-24 Iwk Verpackungstechnik Gmbh Product stack delivery controlling method for packaging machine, involves beginning delivery cycle in such manner that cell of conveyor adopts predetermined relative position relative to product stack at end of delivery cycle

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3040866A1 (en) * 1980-10-30 1982-06-03 Robert Bosch Gmbh, 7000 Stuttgart Folded documents supply to packaging machines - pushes documents together with goods being packaged into boxes and includes monitoring control system
DE3538860A1 (en) * 1985-11-02 1987-05-07 Schindler & Wagner Kg Transfer station for a packaging line
JPH0629049B2 (en) * 1988-12-28 1994-04-20 株式会社フジキカイ Seal body drive control device for horizontal bag filling and packaging machine
US5038911A (en) * 1989-02-16 1991-08-13 Rapistan Corporation Controlled spacing induction from plural lines
US5079901A (en) * 1989-05-08 1992-01-14 Carol J. Witt Coupon inserting apparatus and method
IT1240709B (en) * 1990-08-17 1993-12-17 Cavanna Spa PROCEDURE FOR REGULATING THE ADVANCE OF ITEMS IN A CONVEYING SYSTEM, IN PARTICULAR AN AUTOMATIC PACKAGING SYSTEM, AND RELATED SYSTEM.
DE19623951C1 (en) * 1996-06-15 1998-01-02 Haensel Otto Gmbh Device for folding and inserting a leaflet
DE19735942C2 (en) * 1997-08-19 2000-02-03 Elau Elektronik Automations Ag Process for operating a packaging machine with an electrical vertical shaft and packaging machine
EP1077875B1 (en) * 1998-05-05 2003-01-29 Elau Elektronik Automations AG Packaging machine
DE19841526A1 (en) * 1998-09-10 2000-03-16 Focke & Co Connecting print media with packets, especially cigarette packs, involves feeding print media to packets or contents via conveyor with speed controlled according to relative positions

Also Published As

Publication number Publication date
AU2003205659A1 (en) 2003-09-09
EP1476361A1 (en) 2004-11-17
US20050126127A1 (en) 2005-06-16
JP2006505455A (en) 2006-02-16
WO2003070577A1 (en) 2003-08-28
MXPA04007982A (en) 2004-11-26
BR0307789A (en) 2004-12-21
DE10207096A1 (en) 2003-08-28

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Legal Events

Date Code Title Description
FZDE Discontinued