Strapping machine for diagonal strapping of loads
a strapping machine and load technology, applied in the directions of packaging, bundling machine details, application of binding materials, etc., can solve the problems of time-consuming, labor-intensive, and expensiv
Inactive Publication Date: 2011-09-15
ILLINOIS TOOL WORKS INC
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- Description
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- Application Information
AI Technical Summary
Benefits of technology
The present patent provides a strapping machine for applying a strap diagonally across a load. The machine includes a carriage and sealing heads that move relative to the load to tension and seal the strap material around the load. The strapping machine can be used with a conveyor to position the load for strapping. The method involves engaging a drape of strap material with the load, drawing the strap material upward and towards the opposite side of the load, tensioning the strap material, and sealing the strap material to itself to form a subsequent drape of strap material. The strapping machine can be used with a rotating load to apply strap to all sides of the load. The technical effects of the invention include improved strapping efficiency and stability, as well as reduced labor costs and improved load protection.
Problems solved by technology
While this method functions well to diagonally strap a load, it is time consuming, slow, labor intensive and costly.
Method used
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[0029]While the disclosed apparatus is susceptible of description in various forms, there is shown in the drawings and will hereinafter be described an exemplary embodiment with the understanding that the present disclosure is to be considered an exemplification of disclosure and is not intended to be limited to the exemplary embodiment illustrated.
[0030]Referring to the figures and in particular to FIG. 1, there is shown an embodiment of a strapping machine 10 for the diagonal strapping of loads. Such a strapping machine 10 (sometimes referred to herein as “strapper” or “diagonal strapper”) uses a drape-type of operation in which a band of strap material S is draped across an edge of the load L (for example, a lower front edge LFE) and along the transverse adjacent (side) surfaces C of the load L. The strap is then tensioned and joined, as by sealing, across the diagonal (upper rear) edge URE (see, e.g., FIG. 10A) by a pair of reciprocating heads 12a,b (see FIGS. 6A and 6B) having ...
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A strapping machine applies a strap diagonally across a load. The machine draws a drape of strap material at a lower edge on the front of the load to an upper edge on a rear of the load, tensions the strap material and seals abutting courses of the material to one another around the load and forms a subsequent drape of strapping material. A carriage is movable longitudinally relative to the load. Opposing reciprocating sealing heads are mounted to the carriage and move toward and away from one another. The heads are movable vertically between a position above the upper edge of the load and a position at about the upper edge of the load. A strap supply and a strap lifter is associated with each of the sealing heads. The lifters lower the drape of strap material to the lower edge of the load, and raise the drape of strap material as the carriage moves relative to the load, such that the drape of strap material is drawn toward the upper edge of the opposite side of the load. The sealing heads then tension the strap material around the load and form a seal of strap around the package and a seal forming the subsequent drape of strap material.
Description
CROSS-REFERENCE TO RELATED APPLICATION DATA[0001]This application claims the benefit of U.S. Provisional Patent Application Ser. No. 61 / 313,989, filed Mar. 15, 2010.BACKGROUND[0002]Strapping machines are in widespread use for applying strap, such as a plastic strap material, in a tensioned loop around a load. In a typical automatic or semi-automatic strapping operation, strap is applied in either a vertical or a horizontal orientation around a load.[0003]One type of strapper uses a chute, through which strap is pushed to create a loop, which is then pulled and tensioned, and subsequently sealed around a load. Another type of strapper is a drape-type strapper in which strap is fed from opposing dispensers and joined or sealed to form a drape, which is then pulled around a load and centrally sealed and severed from the feed, while at the same time forming a central seal for a subsequent strap drape. Both the chute-type and drape-type strappers function in either a horizontal or a vert...
Claims
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IPC IPC(8): B65B13/02B65B13/18
CPCB65B13/181B65B13/02
Inventor JOWETT, CLEMENTVAN GROOTEL, ANTONIUS WILHELMUS JOSEPHUS
Owner ILLINOIS TOOL WORKS INC