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Pack alignment apparatus and methods using linear motor

a linear motor and alignment apparatus technology, applied in the field of wrapping stacks of sheetlike products, can solve the problems of increasing the difficulty of maintaining the squareness of the stack and the accuracy of the stack along the stack travel path, and the shrinkage of the wrapping process and the wrapping arrangement,

Inactive Publication Date: 2015-03-19
C G BRETTING MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a method for aligning and accumulating stacks of sheets. The method involves using a stack aligner with paddles and a control arrangement to independently control the motion of the paddles. This allows for improved positional accuracy and squareness of the stacks. The technical effects of the patent include an increased number of accumulated stacks within the stack aligner and improved alignment accuracy. Additionally, the method can switch between accumulating and reducing stacks within the aligner.

Problems solved by technology

The wrapping process and wrapping arrangements do not tolerate large variations in the spacing between stacks or variations in the shape / squareness of the stacks.
As the speed of production of the stacks of sheet-like product increases it becomes more and more difficult to maintain the squareness of the stacks as well as the accuracy of the stacks along the stack travel path.

Method used

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  • Pack alignment apparatus and methods using linear motor
  • Pack alignment apparatus and methods using linear motor
  • Pack alignment apparatus and methods using linear motor

Examples

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Embodiment Construction

[0060]FIG. 1 is a schematic illustration of a pack forming system 100 according to an embodiment of the present invention. The pack forming system 100 is configured to form and then wrap stacks of sheet-like product such as napkins or facial tissue to form packs of sheet-like product. Typically, the pack forming system 100 will receive a web of material and convert the web of material into the packs of sheet-like product.

[0061]The illustrated pack forming system 100 includes a folding arrangement 102 that receives a continuous web of material and cuts the web into individual sheets and stacks the sheets to form logs 104. The sheets within the logs 104 may be folded any number of times. Further, adjacent sheets in the logs may be interfolded or merely in a stacked configuration and not interfolded. Preferably, adjacent sheets are vertically stacked. However, embodiments of the invention are not so limited and in some embodiments, the sheets may be vertically oriented such that the sh...

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PUM

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Abstract

A system for forming and wrapping a plurality of stacks of sheet-like product is provided. The system includes a stack aligner for squaring up leading and trailing ends of the stack as well as sides of the stacks is provided. The stack aligner is also configured for controlling the position of the stacks along the stack travel path such that the stacks exit the stack aligner with tight positional tolerances for being fed to the stack wrapping arrangement.

Description

CROSS-REFERENCE TO RELATED PATENT APPLICATIONS[0001]This patent application claims the benefit of U.S. Provisional Patent Application No. 61 / 879,236, filed Sep. 18, 2013, the entire teachings and disclosure of which are incorporated herein by reference thereto.FIELD OF THE INVENTION[0002]This invention generally relates to systems for forming wrapped stacks of sheet-like product, and particularly to an alignment apparatus for aligning stacks of sheet-like product prior to being wrapped into packs.BACKGROUND OF THE INVENTION[0003]Many sheet-like products such as, for example, napkins, facial tissues or paper towels are stacked and then wrapped for shipment. Many wrapping arrangements for wrapping the stacks process the stacks in a single-file orientation.[0004]The wrapping process and wrapping arrangements do not tolerate large variations in the spacing between stacks or variations in the shape / squareness of the stacks. As such, it is desirable to feed stacks to the wrapping arrangem...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B65H31/34
CPCB65H31/34B65H31/3081B65H2404/731B65H2701/182B65H2701/1924B65G47/28B65G54/02B65H5/006B65H2555/13
Inventor MICHLER, JAMES R.PETERSEN, JEFFREY TOMLUNN, RYAN JAYBALDUC, ANDREW KELLRETZLOFF, TIMM G.
Owner C G BRETTING MFG
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