CASE TURNER

Abstract

An apparatus for transporting a case along a conveyor moving in a transport direction includes an engagement plate for positive engagement with the case. The engagement plate has a planar face and a vacuum source for vacuum attachment to a case outer surface face. The apparatus further includes a mechanism for moving the plate in the transport direction and for rotating the plate a selected angle from the transport direction. Related, corresponding, or associated methods for transporting a case along a conveyor moving in a transport direction are also disclosed.

Claims

1. An apparatus for transporting a case along a conveyor moving in a transport direction, the apparatus comprising: an engagement plate for positive engagement with the case, the engagement plate having a planar face and a vacuum source for vacuum attachment to a case outer surface face; and a mechanism for: a. moving the plate in the transport direction, and b. rotating the plate a selected angle from the transport direction.

2. The apparatus of claim 1 wherein the planar face of the engagement plate comprises a plurality of vacuum suction cups.

3. The apparatus of claim 1 wherein the engagement plate positively engages with a lateral side of the case.

4. The apparatus of claim 1 wherein the mechanism for moving the plate in the transport direction and rotating the plate a selected angle from the transport direction is for rotating the plate an angle of between 0 degrees and 120 degrees from the transport direction.

5. The apparatus of claim 1 wherein the mechanism for moving the plate in the transport direction and rotating the plate a selected angle from the transport direction is for rotating the plate an angle of approximately 90 degrees from the transport direction.

6. The apparatus of claim 1 wherein the engagement plate positively engages with a back lateral side of the case.

7. The apparatus of claim 1 wherein the mechanism moves the plate inline in the transport direction.

8. A case transport apparatus for sequentially individually transporting a case along a conveyor moving in a transport direction from a stream of cases in a sequential process, the apparatus comprising: an engagement plate for positive engagement with the case, the engagement plate having a planar face and a vacuum source for vacuum attachment to an outer lateral surface face of the case, the engagement plate having a plurality of vacuum suction cups disposed in spaced relation on the planar face to engage with the outer lateral surface face of the case; and a mechanism for: a. moving the plate in the transport direction, and b. rotating the plate an angle of between 0 degrees and 120 degrees from the transport direction.

9. The apparatus of claim 8 wherein the mechanism for moving the plate in the transport direction and rotating the plate an angle of between 0 degrees and 120 degrees from the transport direction is for rotating the plate an angle of approximately 90 degrees from the transport direction.

10. The apparatus of claim 8 wherein the engagement plate positively engages with a lateral side of the case.

11. The apparatus of claim 8 wherein the engagement plate positively engages with a back lateral side of the case.

12. The apparatus of claim 8 wherein the mechanism moves the plate inline in the transport direction.

13. A method for transporting a case along a conveyor moving in a transport direction, the method comprising: vacuum attaching an engagement plate with a case outer surface face to form a case/plate combination; moving the combination in the transport direction; and detaching the engagement plate from the case to allow the case to be separately conveyed.

14. The method of claim 13 additionally comprising: rotating the case/plate combination prior to said detachment step.

15. The method of claim 14 wherein the case/plate combination is rotated a selected angle relative to the transport direction prior to said detachment step.

16. The method of claim 14 wherein the case/plate combination is rotated a selected angle between 0 degrees and 120 degrees relative to the transport direction prior to said detachment step.

17. The method of claim 14 wherein the case/plate combination is rotated approximately 90 degrees relative to the transport direction prior to said detachment step.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above-mentioned and other features and objects of this invention will be better understood from the following detailed description taken in conjunction with the drawings wherein:

[0016] FIG. 1 is a schematic perspective view of an apparatus in the transport of an exemplary case according to one preferred embodiment of the invention.

[0017] FIG. 2 is a schematic perspective view of the apparatus shown in FIG. 1 but now showing the case transport at a subsequent point in the transport process.

[0018] FIG. 3 is a schematic perspective view of the apparatus shown in FIG. 1 and FIG. 2 but now showing the case transport at a further subsequent point in the transport process.

[0019] FIG. 4 is a simplified schematic representing application of an apparatus in accordance with the invention in the transport of a case or box.

[0020] FIG. 5 is a schematic perspective view of the apparatus shown in FIG. 1 in the transport of an exemplary case in accordance with another aspect of the invention.

[0021] FIG. 6 is a schematic perspective view of the apparatus shown in FIG. 5 but now showing the case transport at a subsequent point in the transport process.

DESCRIPTION OF PREFERRED EMBODIMENTS

[0022] FIGS. 1, 2, and 3 show an apparatus, generally designated by the reference numeral 10 and in accordance with one preferred embodiment of the invention in the practice of a first aspect of the invention. More particularly, these figures illustrate the apparatus 10 while in the process of transporting a case C in a manner wherein the case C is rotated a selected angle from the transport direction. In the illustrated embodiment, the case C has four side or lateral outer surface faces C1 as well as an open top Ct and a bottom surface face (not shown).

[0023] In this specific example, the case C is rotated approximately 90 degrees from the transport direction. It is to be understood, however, another selected angle of rotation such as between 0 degrees and 120 degrees can, as may be desired, be appropriately employed or utilized should such an angle of rotation be desired or required for a particular application.

[0024] The apparatus 10 includes an engagement plate 20 for positive engagement with the case C. The engagement plate 20 has a generally planar face 24 that includes a plurality of vacuum suction cups 26 for positive engagement with the case C. As shown, the engagement plate 20 desirably vacuum attaches to or with a case outer surface face, particularly a case outer surface side or lateral face C1, rather than a top or bottom face.

[0025] Turning to FIG. 4 there is illustrated a simplified schematic 120 representing the application of an apparatus in accordance with the invention in the transport of a case or box. As shown, a vacuum source, such as designated 130, is joined, connected or a part of apparatus 140 shown as acting on a case 150. In accordance with a specific embodiment, the vacuum source 130 is desirably in vacuum producing communication with the apparatus 140 engagement plate and the suction cups.

[0026] Returning to FIGS. 1-3, the apparatus 10 further includes a mechanism, generally designated by the reference numeral 40 for moving the plate in the transport direction and for rotating the plate at least 90 degrees. To that end, the mechanism 40 includes dual rack and pinion systems 42 and 44. As detailed herein, the systems 42 and 44 work together such as to pivot the engagement plate 20 and the vacuum suctions cups 26 disposed thereon a desired angle, such as from or between 0 degrees to 120 degrees, based on the differential between the two systems.

[0027] The system 42 has a secondary rack 52 perpendicularly attached at the top of the system 42 that engages with the system 44 secondary pinion 54. A square shaft 60 passes through a square hole 62 concentric to this pinon gear 54. This shaft 60 serves to rotate the engagement plate 20 and the vacuum suctions cups 26 disposed thereon an angle, as desired, when the position of the system 42 changes relative to the system 44.

[0028] More specifically, FIG. 1 shows the apparatus 10 at a pick up position (e.g., prior to rotating) for a turned case application. FIG. 2 further highlights the engagement by the engagement plate 20 with the case C lateral side C1. FIG. 3 illustrates the engagement plate 20 attached to the case C lateral side C1 now rotated a desired angle, in this instance a rotation of approximately 90 degrees.

[0029] The reliability of the apparatus for or in rotating a box or case is greatly enhanced due to the positive control provided or resulting from the application of the vacuum suction cups onto case. The suction cups desirably prevent the case from moving out of position and force the case to only the desired orientation. In practice, the cups desirably remain in contact with the box until the box reaches a hand off point where, for example, the box can be appropriately positively engaged by a following or successive machine or component, such as by grips of or from such following or successive machine or component, making for a fully controlled hand off. After such successive positive engagement, the vacuum suctions cups can be appropriately detached and moved or retracted out of the way of further transport of the case. For example, the vacuum to the suctions cups can be discontinued or a positive air force could be communicated to the suction cups such that the suction cups blow off such that they no longer positively engage with the case side wall.

[0030] While the invention has been described above making specific reference to an embodiment wherein an apparatus in accordance with the subject development is used to effect a desired turning or rotation of the case or box being processed or acted upon, those skilled in the art and guided by the teaching herein provided will understand and appreciate that the broader practice of the invention is not necessarily so limited. For example, the apparatus of the subject development can, if desired, be used or applied so as to transport a case or box in the transport direction without necessarily turning or rotating the box.

[0031] Turning to FIGS. 5 and 6, there is illustrated an embodiment of the apparatus 10 of the subject development as used or applied to transport a case C or box in the transport direction without turning or rotating the box.

[0032] In such embodiment, the engagement plate 20 desirably positively engages with an outer surface face of the case C, such as case outer surface back side lateral face C1, with the vacuum suction cups 26. In this embodiment, rather than rotating the engagement plate a desired or selected angle relative to the transport direction, the apparatus is employed to further transport of the case in the transport direction, such as may be desired in some applications such as where the case is being transferred to a different conveyor, for example.

[0033] More specifically, FIG. 5 shows the apparatus 10 at a pick up position for a non-turned case embodiment. FIG. 6 illustrates the subsequent attachment by the engagement plate 20 to the case C back lateral side.

[0034] While the above described embodiments discuss and describe the transport of an individual case or carton, it is to be understood and appreciated that the subject development can be readily applied and practiced for processing a stream of cases such as for sequentially individually transporting a case along a conveyor moving in a transport direction from a stream of cases in a sequential process.

[0035] Further, while the subject development has been described above making specific reference to apparatus embodiments, those skilled in the art and guided by the teaching herein provided will understand and appreciate that the subject development also encompasses corresponding or related methods. In one embodiment, such a method for transporting a case along a conveyor moving in a transport direction involves:

[0036] vacuum attaching an engagement plate with a case outer surface face to form a case/plate combination;

[0037] moving the combination in the transport direction; and

[0038] detaching the engagement plate from the case to allow the case to be separately conveyed.

[0039] In accordance with particular embodiments, methods for transporting a case along a conveyor moving in a transport direction may suitably involve rotating the case/plate combination prior to the detachment step. Such rotating may involve rotating the case/plate combination selected angle, such as between 0 degrees and 120 degrees and in some cases approximately 90 degrees, relative to the transport direction prior to said detachment step.

[0040] The apparatus and methods in accordance with a preferred embodiment of the subject invention rely on positive engagement such as resulting from a vacuum plate with suction cups. As will be appreciated by those skilled in the art and guided by the teaching herein provided, such vacuum plates can desirably be lightweight and compact construction such as to simplify or facilitate storage as well as replacement or substitution. Furthermore, the compatibility of such engagement plates with boxes or cases of different sizes or dimensions may reduce and, in some cases, avoid the need to change tooling dependent on box size.

[0041] The subject development provides a unique system and method for positively transporting a case, carton or the like and such as in an empty state or condition in either a turned (e.g., 90 degrees) or non-turned (e.g., inline) orientation. Such systems and methods, in accordance with a preferred embodiment, do not rely on the varying friction factor between the case and conveyor but rather relies on suction cups or the like to adhere to the side or rear of the case to control it during transfer from one station to the next as such control of the case is important to help ensure machine reliability and to prevent jams.

[0042] An attractive feature of a system of the subject development in accordance with one preferred embodiment is that the system can, in a small area, provide a unique capability to: [0043] 1. transport a case in an inline fashion, such as from a glue compression station to the next indexing station, for example, and [0044] 2. turn a case a selected or desired angle, e.g., 90 degrees, such from the orientation of the case upon formation or erection and transport the turned cased to the indexing station.

[0045] Those skilled in the art and guided by the teachings herein provided will understand and appreciate that the case transport apparatus and methods of the invention, such as through the application and use of a quick-change vacuum engagement plate, desirably provide a solution to case transport challenges that is either or both lightweight and compact such as to simplify and ease storage. Furthermore, through practice of the invention the need for changes in tooling, such as dependent on case or box size, may desirably be avoided.

[0046] While in the foregoing specification this invention has been described in relation to certain preferred embodiments thereof, and many details have been set forth for purpose of illustration, it will be apparent to those skilled in the art that the subject invention is susceptible to additional embodiments and that certain of the details described herein can be varied considerably without departing from the basic principles of the invention.