FIELD OF THE INVENTION
The present invention relates to a benchtop label applicator assembly, and more particularly to a mechanism for label size selection for the benchtop label applicator assembly.
BACKGROUND OF THE INVENTION
Label applicators have been designed to wrap labels around a cable without spinning the cable along the longitudinal axis. The label applicators can include an internal printer that prepare labels for wire, cables or other elongated objects of varying diameters. Alternatively, label applicators can apply pre-printed labels to the wires, cables or other elongated objects of varying diameters. The pre-printed labels are presented on spools that are attached to the label applicator. When it is desirable to apply a different size label, the pre-printed label spool is replaced with a pre-printed label spool of the desired size labels.
Thus, it would be desirable to provide a label applicator that allows repeatable changeover between label sizes without multiple pre-printed label spools or additional tooling.
SUMMARY OF THE INVENTION
The present invention is directed to a mechanism designed to select a label size in a label applicator. The mechanism includes an index plate with an index arm pivotably mounted to the index plate. A wedge carrier is mounted to the index plate. The wedge carrier includes guide rollers and a peel blade that from a peel wedge which dictates a label path for the label in the label applicator. The movement of the index plate by the index arm linearly moves the wedge carrier and attached guide rollers and peel blade thereby adjusting the label path in the label applicator.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of the benchtop label applicator with the selectable peel and present mechanism of the present invention.
FIG. 2 is a right side view of the selectable peel and present mechanism of FIG. 1.
FIG. 3 is a right side view of the selectable peel and present mechanism of FIG. 1 with the index arm in a forward position.
FIG. 4 is a right side view of the selectable peel and present mechanism of FIG. 1 with the index arm in a back position.
FIG. 5 is a right side perspective view of the selectable peel and present mechanism of FIG. 1.
FIG. 6 is an exploded view of the blade carrier of the selectable peel and present mechanism of FIG. 5.
FIG. 7 is a left side perspective view of the index arm of the selectable peel and present mechanism of FIG. 5.
FIG. 8 is a right side perspective view of the index arm of the selectable peel and present mechanism of FIG. 5.
FIG. 9 is a left side perspective view of the index plate and wedge carrier of the selectable peel and present mechanism of FIG. 5.
FIG. 10 is an exploded perspective view of the index plate and the wedge carrier of FIG. 9.
FIG. 11 is a left side perspective view of the selectable peel and present mechanism of FIG. 1.
DETAILED DESCRIPTION
The present invention is directed towards a mechanism that allows an operator to select the label size they will be working with and mechanical adjustments to the label applicator to accommodate the specific label size.
FIG. 1 illustrates a bench top label applicator 20 with an electrical enclosure 22 on a base plate 26, an applicator head assembly 28 that includes a label wrapping system 30, a spindle 32 for receiving a spool of pre-printed labels, and a label liner rewind 34. A selectable peel and present subassembly 50 is mounted to the vertical plate 24 of the electrical enclosure 22 and positioned above the applicator head assembly 28.
FIGS. 2-4 illustrate a side view of the selectable peel and present subassembly 50 of the present invention. The selectable peel and present subassembly 50 is easily accessible by the operator. The selectable peel and present subassembly 50 is designed to adjust the label path in the label applicator 20 to accommodate various label sizes to be affixed to cables. The selectable peel and present subassembly 50 includes the components that make up a peel wedge for the present invention. The peel wedge is the shape of the media or label path as viewed from the side of the label applicator 20. The location of the peel wedge with respect to the applicator head dictates the size or length of the label that is going to be applied to the cables. The shape of the peel wedge is also crucial to consistent peeling of the label that is applied to the cables.
The peel wedge is formed by two guides rollers 62 and the peel blade 68, which is under the blade carrier 66. The components that form the peel wedge are attached to the wedge carrier 60. As described below, the wedge carrier 60 is directly translated along the index slot 92 (FIGS. 9-10) in the index plate 90 by the operator through the index arm 74.
As illustrated in FIGS. 3 and 4, the index plate 90 includes an index pattern 94 with a number of slots 96 that receive an index bolt 80 of the index arm 74. Each slot 96 defines the distance the peel wedge is located from the applicator head 28. The operator can move the index arm 74 to be positioned in one of several slots 96 in the index pattern 94. FIG. 3 illustrates the index arm 74 and wedge carrier 60 in a forward most position and FIG. 4 illustrates the index arm 74 and wedge carrier 60 in a back position. When the operator moves the index arm 74, the peel wedge components are moved to a proper distance away from the applicator head 28 to accommodate the specific label size that the operator wants to apply to the cable.
FIGS. 5-11 further illustrate the selectable peel and present subassembly 50. As illustrated in FIG. 5, the right side of the selectable peel and present subassembly 50 includes an index spacer 52, a wedge carrier 60, a label presence sensor and housing 64, a blade carrier 66 and an emitter arm 72. The guide rollers 62 that extend from the wedge carrier 60, as illustrated in FIGS. 1-4, have been omitted for clarity.
FIG. 6 illustrates an exploded view of the blade carrier 66 that extends from the wedge carrier 60. The blade carrier 66 includes a peel blade 68 that is secured to the bottom of the blade carrier 66 via fasteners 70.
FIGS. 7 and 8 illustrate the index arm 74 that is secured to the selectable peel and present subassembly 50. As described above, the index arm 74 enables the operator to engage the wedge carrier 60. The index arm 74 includes an indexer 76, a spring 78, an index bolt 80 secured to the indexer 76, a pivot bearing 82 with a pivot bolt 86 located in a slot 84 in the index arm 74, and an index arm bushing 88. The indexer 76 is spring biased so that once the operator releases the indexer 76, the spring 78 forces the indexer 76 back to its initial position.
To change the position of the index arm 74 with respect to the slots 96 in the index plate 90, the operator lifts the indexer 76 and attached index bolt 80 out of the current slot 96 of the index pattern 94 in the index plate 90. While still holding the indexer 76 up, the operator can move the indexer 76 and index arm 74 to another position along the index plate 90. As discussed above, FIG. 3 illustrates the indexer 76 in the forward most position and FIG. 4 illustrates the indexer 76 in a back position. When the operator releases the indexer 76, the spring 78 returns the indexer 76 down and combined with the shape of the slots 96 in the index plate 90, holds the index bolt 80 into position within one of the slots 96.
The pivot bearing 82 translates the motion of the index arm 74 to the wedge carrier 60 and attached peel wedge components. The pivot bearing 82 rides linearly in a slot 84 in the index arm 74. A pivot bolt 86 extends through the pivot bearing 82 and affixes into the wedge carrier 60. The pivot bearing 82 moves rotationally around the pivot bolt 86, and relative to the wedge carrier 60.
Leverage to move the wedge carrier 60 is created by the index arm's 74 movement around the index arm bushing 88, which mounts to the pivot shaft 54 (see FIG. 9) on the index spacer 52. The index arm 74 is retained on the selectable peel and present subassembly 50 by the pivot bearing bolt 86 and a nut on the pivot shaft 54.
FIG. 9 illustrates the left side of the selectable peel and present subassembly 50 without the index arm 74 installed. FIG. 10 is an exploded view of the selectable peel and present subassembly 50 without the index arm 74 installed. The wedge carrier 60 is attached to the index plate 90 via nylon plastic bearings 100, 102. A portion in a first bearing 100 fits into the index slot 92 in the index plate 90, which forces the wedge carrier 60 to follow a linear motion, despite the arcing motion of the index arm 74. A second bearing 102 is mounted with compression springs 104 between the second bearing 102 and the backing plate 106 to apply a compressive force to the selectable peel and present subassembly 50 so that the second bearing 102 is drawn against the index plate 90. This reduces free movement of the subassembly 50 that would occur through a tolerance stackup. Compression bolts 108 reach through all of the components and thread into the wedge carrier 60, to hold the subassembly 50 together. A pair of limit bearings 110 are positioned on the wedge carrier 60. The limit bearings 110 reduce undesirable deflection of the subassembly 50 around the compression springs 104 when web tension is applied through the peel blade 68 by changing the point where the subassembly 50 would pivot and involving all compression springs 104 in resisting deflection of the subassembly 50.
FIG. 11 illustrates a right perspective view of the selectable peel and present subassembly 50. The index arm 74 is secured to the index plate 90 via the pivot bearing 82 and the bearing assembly. An indexer position sensor 112 is attached to the index arm 74. The sensor 112 is a rotary potentiometer that allows the label applicator 20 to determine the position of the index arm 74, thus reducing label selection errors. The indexer position sensor 112 is fixed against rotation to the index arm 74 and keyed through its center with a sleeve to a mating feature in the pivot shaft 54 thereby ensuring consistent orientation.
Furthermore, while the particular preferred embodiments of the present invention have been shown and described, it will be obvious to those skilled in the art that changes and modifications may be made without departing from the teaching of the invention. The matter set forth in the foregoing description and accompanying drawings is offered by way of illustration only and not as limitation. The actual scope of the invention is intended to be defined in the following claims when viewed in their proper perspective based on the prior art.
Patent Grant
11673704
