Material or article handling – Apparatus for moving intersupporting articles into – within,... – Removes intersupporting article from row
Patent
1995-04-26
1996-08-06
Merritt, Karen B.
Material or article handling
Apparatus for moving intersupporting articles into, within,...
Removes intersupporting article from row
414786, 271 11, 271107, 271 311, B65G 5908
Patent
active
055428169
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a method and an arrangement for conveying blanks in an erecting machine from a stack of blanks, which are intended to be picked one at a time from the stack and conveyed further to a form chamber in an erecting machine, where the blank is formed into a container with the aid of a plunger. The magazine includes bottom and side guides, as well as means for conveying the blanks, upstanding on edge, forward to the exit or delivery end of the magazine. There are also means for conveying the blanks, after they exit from the machine, to the form chamber, where they are formed into containers with the aid of the plunger.
In the types of erecting machines at present on the market, there are considerable problems with the mechanisms transferring the blanks from the magazine and advancing them into the erecting machine itself, i.e. there are stoppages in the flow of blanks, or two or three blanks are advanced simultaneously, thus causing machine downtime. Another problem is that most erecting machines have magazines, where the blanks are stacked one on top of the other, resulting in that filling the magazine is both difficult and laborious.
The object of the present invention is to eliminate the drawbacks burdening previously known apparatus of the kind mentioned above, and to achieve a method and an arrangement in erecting machines for conveying blanks from a magazine such as to take place without unnecessary downtime, as well as at very high machine speeds, while the arrangement for carrying out the method has apparatus having a construction which is simple and reliable. The features distinguishing the invention are disclosed in the accompanying claims.
By reason of the present invention there has now been provided a method and an arrangement of the kind mentioned above, for conveying blanks that are stacked on edge in a magazine. With the blank picking apparatus included in the inventive arrangement the magazine may now be placed at working height, signifying several advantages from the ergonomic aspect, particularly for the personnel who daily attend the machine. The picking apparatus includes at least one suction cup device, the cup of which attaches itself to the blank nearest to it in the magazine, the device drawing the blank from the magazine such as to give the blank a curved configuration, while taking the upper portion of the blank into engagement against a bolster roller. Also part of the picking apparatus is a swinging segment device, which moves such as to press a portion of the blank against the bolster roller while moving at a peripheral speed, which is the same as that of the roller, the device and roller thus urging the blank to an advancing means, e.g. a set of rollers. By this arrangement the blank is re-oriented from an upstanding attitude in the magazine to a horizontal attitude for advancing to the form chamber in the erecting machine. With this horizontal orientation the blank is urged downwards in the form chamber using a plunger, thus forming the packaging container. Only one blank at a time is picked by the inventive blank picking apparatus, since the intrinsic resistance to bending of the blanks causes the blank next to the one being withdrawn to separate from it as the suction cup device draws the blank it is attached to into a curved configuration, the problem caused by two or more blanks being picked simultaneously thus being eliminated. Due to the simplicity of the apparatus, where few moving parts are required for the actual picking and translation of the blanks from vertical to horizontal orientation, very high machine speeds can be maintained, and of course large capacity as a result.
The invention will now be described in more detail below, using a preferred embodiment example, and with reference to the accompanying drawings, where:
FIG. 1 is a perspective view of one end of an erecting machine operating with two magazines, of which the one to the right is shown loaded with blanks on edge, the inventive blank picking apparatus being placed at the b
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patent: 5177930 (1993-01-01), Harston et al.
patent: 5429346 (1995-07-01), Andersson et al.
Hess Douglas
Merritt Karen B.
Sprinter System AB
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