Manufacturing container or tube from paper; or other manufacturi – Container making – Rigid container
Patent
1988-10-07
1991-01-29
Terrell, William E.
Manufacturing container or tube from paper; or other manufacturi
Container making
Rigid container
493143, 493474, 493475, B31B 346, B31B 144
Patent
active
049883313
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a process for dynamic dimensional adjustment of a stamping assembly for the die-stamping of cardboard blanks used in the production of packaging trays, and relates to a die-stamping apparatus for carrying out this process.
BACKGROUND OF THE INVENTION
There is already a known process for die-stamping blanks using a stamp/die assembly. Using such prior art processes, blanks to be die-stamped is extracted successively from blank supply means, such as a magazine; the blank is transferred between the stamp and the die spaced apart; the stamp and the die are brought closer, until they contact either side of the blank to die-stamp it; if appropriate, matching or mutually adjacent parts of the blank are fastened together, by adhesive bonding; the stamp and the die are moved apart; and the blank is extracted and discharged.
A blank die-stamping device which can be used on a packaging machine, such as a tray-making machine, is likewise known and comprises a stamp and a die interacting with one another, means for bringing the stamp and the die closer and for spacing them apart between two end positions. These positions include an inactive position, in which they are spaced apart, and an actual die-stamping position, in which they are fitted one in the other, and means for extracting and for discharging the die-stamped blanks.
Reference can be made, for example, to the document FR 2,248,932.
This die-stamping process and device are intended for a packaging machine possessing means for supplying blanks, means for extracting a blank from these supply means, means for transferring this blank to the die-stamping device, means for extracting the die-stamped blank from the die-stamping device and for discharging it towards another station for filling it with contents to be packaged.
Such prior art die-stamping processes and device are usually designed to operate with a single format of blanks. The blanks are generally made of cardboard, having folding lines and matching or mutually adjacent parts intended to be fastened together by adhesive bonding (tabs, flaps, etc). In fact, the best known packaging machines associated with such die-stamping devices generally operate under a single blank format. Achieving a change in blank format is therefore either impossible or is carried out by changing the stamp and the die completely or manually, this being lengthy, difficult, inaccurate, costly, etc.
The document U.S. Pat. No. 3,218,940 describes a cardboard-shaping machine which possesses such a die-stamping device adjustable manually so as to be adapted to cardboard blanks of different formats. For this purpose, the stamp and the die are each made of several plural shiftable, but lockable relative in the two longitudinal and transverse directions, the means for guiding and driving these parts ensuring these shifts and locks. However, these shifts and locks are manual and, moreover, separate and distinct for the stamp and the die, thus making it impossible, in practice, to carry out numerous rapid, easy and reproducible adjustments.
Other devices are also known from the documents U.S. Pat. No. 2,641,973, U.S. Pat. No. 2,798,416, DE 292,080, U.S. Pat. No. 3,046,849, U.S. Pat. No. 1,386,292, U.S. Pat. No. 4,033,242 and U.S. Pat. No. 3,357,700.
In the general sector of packaging, it is also known that there is the possibility of adjusting the members of a machine, depending on the conditions of use, including the dimensions of the processed packages (see the documents FR 2,029,300 and EP 0,142,007). However, such adjustments are not, suitable for the die-stamping of blanks.
The first object of the present invention is, therefore, to provide a method and apparatus for programmable automatic control of die and stamp size in a die-stamping assembly, each die-stamping member of which is in several adjustable and lockable parts. More specifically, the object of the invention is to ensure automatic, rapid, accurate and reproducible adjustment. The second main object of the inventio
REFERENCES:
patent: 2641973 (1953-06-01), Straw
patent: 2798416 (1957-07-01), Clement
patent: 3053151 (1962-09-01), Blumer
patent: 3218940 (1965-11-01), Pearson
patent: 4033242 (1977-07-01), Rice et al.
patent: 4052933 (1977-10-01), Royal
patent: 4345905 (1982-08-01), Moen
patent: 4581005 (1986-04-01), Moen
patent: 4674998 (1987-06-01), Benedicenti
Terrell William E.
Vega Automation
LandOfFree
Programmable dynamically adjustable plunger and tray former appa does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Programmable dynamically adjustable plunger and tray former appa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Programmable dynamically adjustable plunger and tray former appa will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-811031