Patent Application
20210309407
Not applicable.
This disclosure relates to label wrappers, and more particularly to a label wrapper with a block with a notch that can receive an elongated object.
Labels are often applied to elongate objects, such as wire, to provide information about the wire. One such approach is to apply a label by hand. This approach can prove difficult to do in an accurate, consistent, and timely manner. It can be difficult to consistently place the labels in such a way that the labels are square and aligned on the wire and also to properly and evenly adhere the label to the surface of the wire.
Accordingly, mechanical label applicators are available that assist in the application of preprinted labels to elongate objects such as wire. However, these applicators are often designed to be used with objects of relatively large diameter or size and, as the size of the elongate object becomes very small and/or if the object is very flexible (such as may be the case with slender fiber optic cables), then these applicator systems perform less robustly.
Therefore, a need exists for a device that can securely and uniformly apply a label to an elongate object with a relatively small cross-sectional periphery or diameter and/or that is flexible.
Provided herein is a novel structure for a label wrapper assembly that addresses many of the aforementioned issues and provides an improved mode of application. Uniquely, such an improved label wrapper assembly may include a compliant block with a notch that receives the elongate object at wrapping. The compliant block can conform to a segment of the periphery of the elongate object, which may assist in providing even pressure across more area and permits for more robust and consistent application of a label to particularly slender objects that heretofore have been difficult to wrap using such label wrapper assemblies.
According to one aspect, a label wrapper assembly configured to adhere a label to an elongate object is provided. The label wrapper includes a roller having a roller axis and a compliant block with a notch extending parallel with the roller axis. The notch can be configured to receive the elongate object therein. The compliant block and the roller are biased toward each other and, when the elongate object is received between the roller and the compliant block, a pressure is applied to the elongate object whereby the compliant block at least in part conforms to the elongate object.
In some forms, the notch of the compliant block can have a substantially V-shaped profile providing a front surface and a rear surface. The front surface and the rear surface can be substantially perpendicular to each other. The front surface can have a greater surface area than that of the rear surface.
In some forms, the compliant block has a length and the notch can have a continuous profile extending the length of the compliant block.
In some forms, at least a section of the elongate object can be removably receivable within the notch, whereby the elongate object can have a diameter in the range of about 0.04 inch to about 0.25 inch.
In some forms, the roller of the label wrapper assembly can be a serrated roller. In some forms, the label wrapper assembly can include a tarp extending over the notch.
The label wrapper assembly can also include a bracket to which the compliant block is coupled. A set of end plates can be provided on either side of the bracket. The bracket can move relative to the set of end plates perpendicular to the roller axis and the roller can be coupled to the set of end plates. In some forms, the roller can be attached to an arm. The arm can rotate relative to the set of end plates.
In some forms, the compliant block and the roller can be biased toward each other by a set of torsion springs coupled to the set of end plates and operatively engaged with the bracket and the roller.
In some forms, the compliant block can be foam and the compliant block can further include a bottom surface facing the roller with the notch extending inward from the bottom surface.
In some forms, a cross-sectional area of a deformation zone of the compliant block can be reduced by at least 10% from a relaxed state when the pressure is applied to the elongate object. The cross-sectional area of the deformation zone can be in a plane perpendicular to the notch and the roller axis.
According to another aspect, a method of applying a mostly uniform pressure along an elongate object within the label wrapper assembly is provided. The method can include separating the compliant block and the roller; placing the elongate object between the compliant block and the roller and within the notch of the compliant block; and applying a pressure to the elongate object when the compliant block and the roller come back together; wherein the compliant block conforms to at least a portion of the elongate object within the notch.
In some forms, the elongate object can be cylindrical and the notch of the compliant block can conform to a portion of the circumference of the section of the elongate object received within the notch. The portion of the circumference can be in the range of about 90 degrees to about 180 degrees of the circumference.
As stated above and in some forms, the elongate object can have a diameter in the range of about 0.04 inch to about 0.25 inch when the method is employed.
In some forms of the method, the notch of the compliant block can have a substantially V-shaped profile providing a front surface and a rear surface. The front surface and the rear surface can be substantially perpendicular to each other. The front surface can have a greater surface area than that of the rear surface. In some forms, the compliant block can be polyurethane foam.
In some forms, the compliant block can be foam and the compliant block can further include a bottom surface facing the roller with the notch extending inward from the bottom surface.
In some forms, a cross-sectional area of a deformation zone of the compliant block can be reduced by at least 10% from a relaxed state when the pressure is applied to the elongate object. The cross-sectional area of the deformation zone can be in a plane perpendicular to the notch and the roller axis.
These and still other advantages of the invention will be apparent from the detailed description and drawings. What follows is merely a description of some preferred embodiments of the present invention. To assess the full scope of the invention the claims should be looked to as these preferred embodiments are not intended to be the only embodiments within the scope of the claims.
Advantages of embodiments of the present invention will be apparent from the following detailed description of the exemplary embodiments thereof, which description should be considered in conjunction with the accompanying drawings in which:
Before any aspect of the present disclosure are explained in detail, it is to be understood that the present disclosure is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The present disclosure is capable of other configurations and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of “including,” “comprising,” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless specified or limited otherwise, the terms “mounted,” “connected,” “supported,” and “coupled” and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Further, “connected” and “coupled” are not restricted to physical or mechanical connections or couplings.
Terms indicating relative position such as “above,” “below,” “upper,” “lower,” “rear,” “front,” and so forth are used for purposes of illustration only, unless otherwise noted and are made with reference to the orientation of the drawings. It should be understood that these terms are not generally meant to indicate a preferred orientation when such an orientation is not inherently or explicitly required.
Reference will be made throughout to applications of embodiments disclosed herein that adhere a label to a wire as one type of elongate object. Such references to a “wire” or “cable” is for purposes of illustration and are not intended to limit the claimed invention to such applications. Rather, any elongate object or objects may be used in conjunction with any label applicator described herein. For example, bundles of elongate objects are also contemplated as falling within the open-ended definition of elongate object.
Conventional approaches to label application can present challenges when an adhesive label is attempted to be applied onto an elongate object having a relatively small diameter (or, more generally, a small cross-sectional peripheral shape), such as a fiber optic cable or other small diameter wire with a diameter in a range of about 0.04 inch to about 0.25 inch. For example, when applying a label to such a small diameter cable, the label can stick to the label applicator as the label is pressed against the cable or the label may be misaligned thereby causing spiraling or wrinkling of the label or creating bubbles within the label. Further, it is difficult to evenly apply a “wetting” force or application pressure to the label as it is applied to the cable to ensure sufficient adhesion over the entire surface area of the cable.
Generally, the present disclosure provides a label wrapper assembly that can adhere a label to an elongate object—even when said elongate object is particularly small, flexible, and/or otherwise difficult to apply a label to. The disclosed label wrapper assembly can apply a more uniform wetting force to the elongate object during adhesion of a label thereto by use of a compliant block that at least partially conforms to the elongate object when a pressure is applied to the elongate object. In some embodiments, the pressure can be applied to the elongate object through a biasing member that biases a roller and the compliant block toward each other to captures the object within the label wrapper assembly for the rotation of the assembly and for the application of the label. In some embodiments, the compliant block can have a notch configured to receive the elongate object therealong during label application. In some embodiments, the notch can have a substantially V-shaped profile. However, in some embodiments, other configurations are possible. For example, certain features and combinations of features that are presented with respect to particular embodiments in the discussion above can be utilized in other embodiments and in other combinations, as appropriate.
This application discloses a number of improvements over and enhancements to other known label applicators. Such label applicators are disclosed, for example, in the inventor's U.S. Pat. Nos. 6,875,304 and 7,178,572, which are incorporated herein by this reference in their entirety for all purposes.
Turning first to
Notably, the compliant block 14 (shown in greater detail in
In the form illustrated, the compliant block 14 is formed from a polyurethane foam and is coupled to the bracket 38 with a set of anchors 54, 56 extending through the bracket 38 and at least partially into the compliant block 14. It is contemplated that the compliant block 14 can be removable from the rest of the label wrapper assembly 10. Therefore, the set of anchors 54, 56 can be removably receivable within the compliant block 14 to allow the compliant block 14 to be removed. The compliant block 14 can have a compliant block length 20 defined between two lateral ends 22, 24 and can have a bottom surface 26 facing the roller 12. As can be seen best in
In one form, such as that illustrated in the figures, the notch 28 has a V-shape profile extending end-to-end along the compliant block length 20. The V-shape profile defines a front surface 30 and a rear surface 32 of the notch 28. The front surface 30 and the rear surface 32 can be substantially perpendicular to each other; however, acute and obtuse angles between the front surface 30 and the rear surface 32 are within the purview of the disclosure. In some embodiments, the front surface 30 can have a surface area that is greater than the surface area of the rear surface 32.
It is further contemplated that the notch 28 can be formed having other profiles than a V-shaped profile. For example, a semi-circular or other arcuate or semi-arcuate profile may be employed or a semi-polygonal shape. It is also contemplated that the notch 28 can be formed to have a continuous or a discontinuous profile along all or part of the compliant block length 20 from lateral end 22 to lateral end 24. For example, some protrusions or recesses may be present along the notch 28 forming a sinusoidal-like or tooth-like variance.
The label wrapper assembly 10 can also include a tarp 34 that extends across the notch 28 and can further extend over the bottom surface 26 of the compliant block 14. The tarp 34 can further be coupled to the bracket 38. Such a tarp 34, if present, can be used to reduce wear on the compliant block 14, ease rotation around an elongate object 36 during label application as discussed further below; and prevent the buildup of adhesive.
As discussed above, the bracket 38 is slidably coupled to and between the set of end plates 40, 42 and can be movable relative to the pair of end plates 40, 42 and to the roller axis 16. Each of the set of end plates 40, 42 has an end plate slot 58 and an elongate protrusion 60 (the end plate slot and the elongate protrusion for the end plate 40 are hidden from view in the figures, but can be seen on plate 42). The bracket 38 has a set of bracket slots 66, 68 extending along a set of bracket legs 62, 64 (
The elongate object 36 can be received within the notch 28 and between the roller 12 and the compliant block 14. The pressure provided between the roller 12 and the compliant block 14 forces the compliant block 14 to conform around at least a portion of the elongate object 36 substantially along the compliant block length 20. Generally, the material comprising the compliant block 14 is configured to be more deformable than the elongate object 36 and will concede space to the elongate object 36 by deforming when the elongate object 36 is received between the compliant block 14 and the roller 12. The materials contemplated for the compliant block 14 have an elastic memory and can maintain the elastic memory after at least 1000 cycles, wherein one cycle includes compression and relaxation of the compliant block 14.
In some embodiments, the compliant block 14 is configured to deform as it transitions between a relaxed state (
In some embodiments the percentage amount of deformation can be based on linear measurements. For example, a relaxed front distance can be defined as the distance along a relaxed front line extending perpendicular from a front surface point at the center of the front surface 30 to an outer surface of the compliant block 14 opposite the front surface 30 and a relaxed rear distance can be defined as the distance along a relaxed rear line extending perpendicular from a rear surface point at the center of the rear surface 32 to an outer surface of the compliant block 14 opposite the rear surface 32 when the compliant block 14 is in the relaxed state. Further, a compressed front distance can be defined as the distance along a compressed front line collinear with the relaxed front line and extending from the front surface point to the outer surface area and a compressed rear distance can be defined as the distance along a compressed rear line collinear with the relaxed rear line and extending from the rear surface point to the outer surface area when the compliant block 14 is in the compressed state. Wherein the percentage reduction between sum of the relaxed front and rear distances and the sum of the compressed front and rear distances can be at least 10%.
Elongate objects having a smaller diameter are generally difficult to secure without damaging during the label application process. The compliant block 14 aids in securing elongate objects having a diameter in the range of about 0.04 inch to about 0.25 inch, and also more particularly within the range of about 0.04 inch to about 0.10 inch.
Once the elongate object 36 is received within the notch 28 and between the roller 12 and the compliant block 14, the label wrapper assembly 10 can rotate around the elongate object 36 during label application. The notch 28 in the compliant block 14 can reduce the potential for the elongate object 36 to slip out from between the roller 12 and compliant block 14 or the tarp 34 as the label wrapper assembly 10 rotates about the elongate object 36 during label application because the elongate object 36 is captured substantially, if not entirely, along the length 20 of the compliant block 14 from the lateral end 22 to the lateral end 24. Further, to some degree, the elongate object 36 can be nested or seated in the notch 28 to help pre-set the position of the elongate object 36 over the axial span. In this way, the conforming of the compliant block 14 around the elongate object 36 can also provide a pre-wrap of a label around the elongate object 36. For example, when the label is inserted between the elongate object 36 and the compliant block 14 the label is partially curved around the elongate object 36 prior to activating the label wrapper assembly 10 to rotate around the elongate object 36 to apply the label. The increase in initial surface area contact can improve overall adherence of the label to the elongate object 36.
Moreover, the conforming characteristic of the compliant block 14 allows for greater contact with the elongate object 36 and any irregularities around the periphery of the elongate object 36 or along the portion of the elongate object 36 received within and along the notch 28. So, in particular, the presence of a pre-fabricated notch 28 can help guide the initial seating of the elongate object 36 in the label wrapper assembly 10 and can apply a more even application force (i.e., a “wetting” force), in a way that even a compliant block without a notch may not be able to do quite as well because of the lack of a pre-formed notch and the greater variance in the pressure over the contacting surface area where there is not even a rough notch profile (pre-compression) that roughly corresponds to the object.
A method of retaining an elongate object within the label wrapper assembly 10 is also contemplated. The method can include separating the compliant block 14 and the roller 12; placing the elongate object 36 between the compliant block 14 and the roller 12 and within the notch 28 of the compliant block 14; and applying a pressure to the elongate object 36 when the compliant block 14 and the roller 12 come back together. When the compliant block 14 and the roller 12 come back together, the compliant block 14 can conform to at least a portion of the elongate object 36 within the notch 28. For example, the notch 28 of the compliant block 14 can conform to a portion of the circumference of the cylindrical elongate object 36 in the range of about 90 degrees to about 180 degrees of the circumference. Then, upon relative rotation of the illustrated part of the wrapper assembly 10 about the elongate object 36, the application pressure is rotationally varied to cause a length of the wrapper to be drawn against and wrapped around the elongate object 36, forming good interfacial contact along the way.
Thus, systems and methods including a label wrapper assembly configured to adhere a label to an elongate object are disclosed herein. The label wrapper assembly can be used to efficiently and repeatability attach a label to an elongate object, for example a wire. The label wrapper assembly can retain an elongate object and uniformly press a label against the elongate object to minimize bubbles and does not allow the label to axially shift along the elongate object during the label application process wrapped.
As noted above, it should be appreciated that various other modifications and variations to the preferred embodiments can be made within the spirit and scope of the invention. Therefore, the invention should not be limited to the described embodiments. To ascertain the full scope of the invention, the following claims should be referenced.
