Netting chutes with ribbed flooring for manual and/or automated clipping packaging apparatus
Netting chutes suitable for use with manual and automatic packaging operations to enclose product in netting packaging include at least one axially extending rib.
This application claims the benefit of priority of U.S. Provisional Patent Ser. No. 60/508,609, filed Oct. 3, 2003, the contents of which are hereby incorporated by reference as if recited in full herein.
FIELD OF THE INVENTIONThe present invention relates to apparatus that can enclose products in packaging materials, and may be particularly suitable for enclosing products in clippable netting material.
BACKGROUND OF THE INVENTIONCertain types of commodity and/or industrial items can be packaged by placing the desired product(s) in a covering material and then applying a closure clip or clips to end portions of the covering material to secure the product(s) therein. For non-flowable piece goods, the piece goods can be held individually in a respective clipped package, or as a group of goods in a single package. The covering material can be any suitable material, typically a casing and/or netting material.
Generally described, when packaging a piece good product in netting, the product is pushed through a netting chute. The product can include, by way of example, a non-flowable semi-solid and/or solid object such as a meat product including whole or half hams, turkeys, chickens, and the like. The netting chute holds a length of a netting sleeve over the exterior thereof. A first downstream end portion of the netting is typically closed using a first clip. As the product exits the netting chute, it is covered with the netting. The netting can be held relatively tight (typically stretched or in tension) over the product. The open end of the netting (upstream of the product) is then gathered and another clip can be applied to the gathered netting, typically using a double clipper apparatus. A clip attachment apparatus or “clippers” are well known to those of skill in the art and include those available from Tipper Tie, Inc., of Apex, N.C., under product numbers Z3214, Z3202, and Z3200. Examples of clip attachment apparatus and/or packaging apparatus are described in U.S. Pat. Nos. 3,389,533; 3,499,259; 4,683,700; and 5,161,347, the contents of which are hereby incorporated by reference as if recited in full herein.
The double clipper apparatus concurrently applies two clips to the netting proximate the open (upstream) end of the package. One clip defines the leading end portion of the package and the other defines the trailing or second end portion of the package then being closed. A cutting mechanism incorporated in the clipper apparatus can sever the two packages before the enclosed package is removed from the clipper apparatus. U.S. Pat. No. 4,766,713 describes a double clipper apparatus used to apply two clips to a casing covering. U.S. Pat. No. 5,495,701 proposes a clipper with a clip attachment mechanism configured to selectively fasten a single clip or two clips simultaneously.
SUMMARY OF EMBODIMENTS OF THE INVENTIONEmbodiments of the present invention provide netting product chutes that can be used to automatically and/or manually package a product in a covering material and/or applying clips thereto.
Certain embodiments are directed toward netting/product chutes having an interior cavity and an exterior surface adapted to hold netting in tension thereon. The chute can have a floor with at least one axially extending rib. The chute may have a non-circular cross-sectional profile.
In certain embodiments, the product can be manipulated and packaged so that at least one clip is automatically applied to enclose the product in the covering material. Particular embodiments automatically package a discrete object or objects in netting.
Certain embodiments are directed toward netting/product chutes comprising an outer wall and a floor that define an interior cavity with a longitudinal axis, an exterior surface of the outer wall adapted to hold netting thereon, the floor having at least one axially extending rib.
Certain embodiments are directed toward systems for enclosing a semi-solid or solid product in a covering material. The systems include: (a) an elongate product chute having a floor with at least one axially extending rib, an outer wall, and opposing receiving and discharge end portions with an interior cavity defined by the floor and outer wall extending therethrough; and (b) a clipper mechanism disposed downstream of the discharge end of the product chute, the clipper mechanism configured to apply at least one clip to a covering material that encloses the product from the product chute.
Other embodiments are directed to methods of packaging an object or objects in netting. The methods include: (a) pushing at least one object through a product chute having a floor with at least one rib thereon; (b) pulling netting material downstream of the product chute from an outer surface of the product chute to automatically enclose the object in netting material as the object exits the product chute; and then (c) applying at least one clip to the netting material to secure the object in the netting material.
In particular embodiments, at least one rib is transversely offset from a centerline of the product chute cavity. The chute can include an entry portion that has a larger cross-sectional area than an intermediate portion.
In some embodiments, the chute includes two axially extending spaced-apart ribs that are securely affixed to the floor and define sidewalls of a channel that extends therebetween.
The chute may comprise an entry portion that has a flared segment with a cross-sectional area that tapers into an adjacent downstream portion with a smaller cross-sectional area. The chute floor and/or channel floor may be substantially planar.
In yet other embodiments, the at least one rib is a single axially extending rib that can be transversely offset from an axially extending centerline.
The chute can include a mounting bracket attached thereto. The mounting bracket may have a planar substantially horizontal mounting platform and a vertical segment with a support channel configured to receive and hold a bottom portion of the product chute. The mounting bracket may be configured as a “quick disconnect” component to allow a changeover to a different product chute held on a similarly configured mounting bracket.
These and other objects and/or aspects of the present invention are explained in detail in the specification set forth below.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will now be described more fully hereinafter with reference to the accompanying figures, in which embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Like numbers refer to like elements throughout. In the figures, certain layers, components or features may be exaggerated for clarity, and broken lines illustrate optional features or operations, unless specified otherwise. In addition, the sequence of operations (or steps) is not limited to the order presented in the claims unless specifically indicated otherwise. Where used, the terms “attached”, “connected”, “contacting”, “coupling” and the like, can mean either directly or indirectly, unless stated otherwise. The term “concurrently” means that the operations are carried out substantially simultaneously.
In the description of the present invention that follows, certain terms are employed to refer to the positional relationship of certain structures relative to other structures. As used herein, the term “front” or “forward” and derivatives thereof refer to the general or primary direction that the product travels for packaging and closure; this term is intended to be synonymous with the term “downstream,” which is often used in manufacturing or material flow environments to indicate that certain material traveling or being acted upon is farther along in that process than other material. Conversely, the terms “rearward” and “upstream” and derivatives thereof refer to the directions opposite, respectively, the forward and downstream directions.
Embodiments of the present invention are particularly suitable for applying closure clips to discrete objects held in a covering material. The covering material may be natural or synthetic and may be a casing material that can be sealed about a product or may be netting. The casing can be any suitable casing (edible or inedible, natural or synthetic) such as, but not limited to, collagen, cellulose, plastic, elastomeric or polymeric casing. The term “netting” refers to any open mesh material in any form including, for example, knotted, braided, extruded, stamped, knitted, woven or otherwise. Typically, the netting is configured so as to be stretchable in both axial and lateral directions (i.e, elastic, and typically isotropically elastic).
Netting or other covering material may be used to package discrete meat products such as loaves of meat, boned ham, spiral-sliced ham, deboned ham, turkey, turkey loaves held in molds, or other meat; the packaging may be formed on the item alone or with the items held in subcontainers and/or wraps such as molds, trays, boxes, bags, absorbent or protective sheets, sealant, cans and the like. Other embodiments of the present invention may be directed to package other types of food such as cheese, bread, fruit, vegetables, and the like. Examples of non-food items that may be packaged using embodiments of the present invention include living items such as flora, trees, and the like, as well as inanimate objects. Additional examples of products include discrete, semi-solid or solid non-flowable objects such as firewood, pet food (typically held in a container if the wet type), recreational objects (such as balls), or other solid or semi-solid objects. The product may be for any suitable industry including horticulture, aquaculture, agriculture, or other food industry, environmental, chemical, explosive, or other application. Netting may be particularly useful to package ham or turkeys, manufactured hardware such as automotive parts, firewood, explosives, molded products, and other industrial, consumable, and/or commodity item(s).
Generally stated, embodiments of the present invention are directed to the packaging of piece goods or discrete items by forcing them through a product chute, wrapping or enveloping the objects at the other end of the chute in a covering material, such as netting, then clipping the covering material with a closure clip or other attachment means to close the covering and hold the object or objects inside of the covering material. As noted above, clippers are available from Tipper Tie, Inc., of Apex, N.C. Examples of suitable clips include metallic generally “U”-shaped clips also available from Tipper Tie, Inc., in Apex, N.C. Other clips, clip materials and clip configurations or closure means may also be used.
This positioning of the product in the flow path and/or alignment with the product chute cavity 30c (
In operation, the product pusher assembly 20 linearly retracts and advances to push a product through the product chute 30 so that the product is positioned proximate the clipper 40 and then retracts to a resting state upstream of the product transfer zone 60. As described above, a sleeve of covering material 100c (see
In some embodiments, the shape, size and/or type of product can determine a suitable netting diameter to provide a desired tightness of netting and, hence, influence the product chute design factor.
In operation, the sleeve of covering material may be clipped, welded, fused, knotted or otherwise closed at a leading edge portion thereof. When the product exits the product chute 30, it is held in the covering material as the covering material is drawn downstream. The covering material is typically loaded onto the product chute 30 and the leading edge portion closed before the product chute 30 is mounted to the apparatus 10. Additional description of a suitable automatic apparatus is described in co-pending, co-assigned U.S. Provisional Patent Ser. No. 60/508,609, filed Oct. 3, 2003, the contents of which were incorporated by reference above.
As shown, the floor 30f can be substantially planar and disposed at the lower portion of a curvilinear wall 30w. In certain embodiments, the chute is configured so that the curvilinear wall 30w terminates or merges into the floor 30f to together define a non-circular cross-sectional shape of the cavity 30c.
Thus, in certain embodiments, the product chute 30 has a cross-sectional profile that is non-circular. As shown in
The product chute body may include a single continuous wall that defines the shape of the cavity 30c above the floor 30f. In other embodiments, the product chute body can be formed with a plurality of walls. In some embodiments, the product chute 30 is fabricated from stainless steel. The interior surface or portions thereof may be coated with an anti-stick coating and/or lubricant. For example, the interior of the chute 30 may comprise TEFLON® polymer. In particular embodiments, a single sheet of sheet metal can be formed to provide the desired product chute body shape.
As shown, the rib 30r is disposed such that is offset from the center of the cavity 30c, although in some embodiments the rib 30r may be centered on the floor 30f. The rib 30r can be positioned adjacent a lower portion of the curvilinear wall 30w. Typically, the rib 30r includes a ramped forward edge portion 30r that inclines or rises to a peak 32. The ramped forward edge portion 30r may have a planar surface segment 31 that tapers in width as the ramped portion rises. The segment 31 can have a width that is wider adjacent the floor 30f than the width closer to the peak 32.
As is also shown, the product chute 30 may include an outwardly flaring edge portion 34 that gradually tapers into the primary chute body. Thus, the product chute 30 can include a larger front-end cavity area relative to the intermediate and/or discharging portion 30d, i.e., the chute cavity 30c narrows in the pushing/product travel direction. Thus, the product chute 30 can include a primary body and a larger upstream guide portion that narrows into the shape of the primary body. The chute 30 may be formed as a unitary member or a series of attached members (not shown).
In operation, a supply of covering material 100c can be placed on or about the chute 30 and arranged to surround the exterior surface of at least a portion of the product chute 30. The covering material 100c stretches in tension in the downstream direction to cover the product (tenting in the axial direction) as the product exits the discharge end portion of the product chute 30d. In certain embodiments, the covering material is configured and sized to stretch in at least the lateral direction and typically in both the lateral and axial directions as it is held on and dispensed from the product chute 30.
The product chute 30 can include a handle 35 or other suitable gripping means thereon to facilitate operator handling. In addition, the product chute 30 may include a mounting bracket 36 that allows the chute 30 to be secured to a mounting frame during operation. Although the product chute 30 is shown as having a continuous outer surface or wall, other configurations may also be used. For example, the chute wall or walls may include a slot or apertures and may not be a closed configuration, typically depending on the application. However, the chute 30 should be configured to provide sufficient structural support for the covering material (typically sized and configured to hold the covering stretched in both lateral and longitudinal directions) and to allow the product to enter the product material as it exits the product chute 30.
Although shown with a single object in a netting package, other embodiments of the invention use the product chutes 30 to package groups of objects (not shown).
The product chute floor 30f may be a stationary floor as shown. However, it is also noted that the product chute 30 may include a moving floor. The chute 30 may be sized relative to the product 100 so that the product 100 extends across a major portion of the width of the cavity, and in certain embodiments, extends across at least about 75% of the width of the cavity. In certain embodiments, the product 100 and chute cavity 30c are sized so that the sides and/or top and bottom of the product 100 are pressed against the sidewalls of the chute cavity as the product is pushed therethrough.
The chutes 30 can vary in length depending on the target object or objects and the netting or covering material used, and the like. In particular embodiments, the chutes can have lengths of between about one (1) foot-eight (8) feet long, and more typically between about 2-6 feet long.
Referring to
The foregoing is illustrative of the present invention and is not to be construed as limiting thereof. Although a few exemplary embodiments of this invention have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this invention. Accordingly, all such modifications are intended to be included within the scope of this invention as defined in the claims. In the claims, means-plus-function clauses, where used, are intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Therefore, it is to be understood that the foregoing is illustrative of the present invention and is not to be construed as limited to the specific embodiments disclosed, and that modifications to the disclosed embodiments, as well as other embodiments, are intended to be included within the scope of the appended claims. The invention is defined by the following claims, with equivalents of the claims to be included therein.
Claims
1. A netting/product chute comprising an outer wall and a floor that define an interior cavity with a longitudinal axis, an exterior surface of the outer wall adapted to hold netting thereon, the floor having at least one axially extending rib.
2. A netting/product chute according to claim 1, the chute comprising an entry portion that has a flared portion with a first cross-sectional area that tapers into a adjacent downstream portion with a smaller second cross-sectional area thereof.
3. A netting/product chute according to claim 1, wherein the at least one axially extending rib is two spaced apart axially extending ribs securely affixed to the floor and defining sidewalls of a channel therebetween.
4. A netting/product chute according to claim 3, wherein the channel has a substantially planar floor.
5. A netting/product chute according to claim 1, wherein the at least one axially extending rib is a single axially extending rib.
6. A netting/product chute according to claim 1, wherein the floor is substantially planar, and wherein the at least one rib is transversely offset from an axially extending centerline of the floor.
7. A netting/product chute according to claim 1, wherein the netting/product chute has a non-circular cross-sectional shape.
8. A netting/product chute according to claim 7, wherein the netting/product chute has a cavity shape with a generally curvilinear upper portion that terminates into a generally planar lower portion that serves as the floor.
9. A netting/product chute according to claim 1, wherein the outer wall of the product chute has a generally semicircular upper portion and the floor is substantially planar, with the at least one rib rising a distance above the floor.
10. A netting/product chute according to claim 3, wherein the ribs veer toward each other along a length of the chute.
11. A netting/product chute according to claim 3, wherein the ribs remain substantially parallel to each other along substantially the entire length of the chute.
12. A netting/product chute according to claim 1, wherein the rib has an inclined forward edge portion that rises to terminate into a peak downstream of an ingress portion of the chute.
13. A netting/product chute according to claim 12, wherein the inclined forward edge portion terminates into the peak downstream but proximate the ingress portion of the chute.
14. A netting/product chute according to claim 12, wherein the inclined forward edge portion comprises a planar segment with a width proximate the floor that is greater than a width proximate the peak.
15. A netting/product chute according to claim 14, wherein the planar segment is a generally triangulated shape.
16. A netting/product chute according to claim 15, wherein a discharge end of the product chute has an angular cross section when viewed from the side so that a length of an upper portion of the product chute is less than a length of a lower portion of the product chute.
17. A netting/product chute according to claim 1, further comprising a sleeve of netting material held against the exterior surface of the outer wall.
18. A netting/product chute according to claim 17, wherein the sleeve of netting material is configured to be in tension and extends a distance beyond a discharge end of the chute during operative use.
19. A netting/product chute according to claim 1, further comprising a mounting bracket, the mounting bracket having a planar, substantially horizontal mounting platform.
20. A netting/product chute according to claim 1, further comprising a handle attached to the product chute proximate an ingress portion thereof.
21. A system for enclosing a semi-solid or solid product in a covering material, comprising:
- an elongate product chute having a floor with at least one axially extending rib, an outer wall and opposing receiving and discharge end portions with an interior cavity defined by the floor and outer wall extending therethrough; and
- a clipper mechanism disposed downstream of the discharge end portion of the product chute, the clipper mechanism configured to apply at least one clip to a covering material that encloses a product discharged from the product chute.
22. A system according to claim 21, wherein the at least one rib is transversely offset from an axial centerline of the floor.
23. A system according to claim 22, wherein the outer wall comprises an entry portion that is flared with a first cross-sectional area that tapers into an adjacent downstream portion with a smaller second cross-sectional area thereof.
24. A system according to claim 22, wherein the at least one axially extending rib is two spaced apart axially extending ribs securely affixed to the floor and defining sidewalls of a channel therebetween.
25. A system according to claim 24, wherein the channel has a substantially planar floor.
26. A system according to claim 22, wherein the at least one axially extending rib is a single axially extending rib.
27. A system according to claim 26, wherein the floor is generally planar.
28. A system according to claim 22, wherein the product chute has a non-circular cross-sectional shape.
29. A system according to claim 28, wherein the product chute has a cavity shape with a generally curvilinear upper portion that terminates into a generally planar lower portion.
30. A system according to claim 21, wherein a primary body of the product chute has a generally semicircular upper portion and the floor is substantially planar, with the at least one rib rising a distance above the floor.
31. A system according to claim 24, wherein the two spaced apart ribs veer toward each other along a length of the chute and then extend generally parallel to each other.
32. A system according to claim 24, wherein the two spaced apart ribs remain substantially parallel to each other along the length of the chute.
33. A system according to claim 21, wherein at least one rib has an inclined forward edge portion that rises to terminate into a peak downstream of an ingress portion of the chute.
34. A system according to claim 33, wherein the inclined forward edge portion terminates into the peak proximate the ingress portion of the chute.
35. A system according to claim 33, wherein the inclined forward edge portion comprises a planar segment with a width proximate the floor that is greater than a width proximate the peak.
36. A system according to claim 35, wherein the planar segment is a generally triangulated shape.
37. A system according to claim 36, wherein a discharge end of the product chute has an angular cross section when viewed from the side so that a length of an upper portion of the product chute is less that a length of a lower portion of the product chute.
38. A system according to claim 37, further comprising a sleeve of netting material held against the exterior surface of the netting/product chute.
39. A system according to claim 38, wherein the sleeve of netting material is configured to be in tension and extends a distance beyond a discharge end of the chute during operative use.
40. A system according to claim 21, further comprising a mounting bracket attached to the product chute, and wherein the product chute mounting bracket is releasably mounted to a frame that holds the product chute in alignment with the clipper mechanism during operation.
41. A system according to claim 21, wherein the product chute interior cavity has a cross-sectional profile that is sized and configured to snugly receive and/or compress a product as the product moves along the length thereof.
42. A system according to claim 21, wherein the product chute is held substantially horizontally during operation.
43. A system according to claim 21, wherein the product chute is held tilted relative to horizontal during operation.
44. A method of packaging an object or objects in netting, comprising:
- pushing at least one object through a product chute having a floor with at least one rib thereon;
- pulling netting material downstream of the product chute from an exterior surface of the product chute to automatically enclose the object in the netting material as the object exits the product chute; and then
- applying at least one clip to the netting material to secure the object in the netting material.
45. A method according to claim 44, wherein the netting material comprises a sleeve of elastic netting material.
46. A method according to claim 45, wherein the netting material comprises netting material that is elastically isotropic.
47. A method according to claim 44, wherein the at least one axially extending rib is two spaced apart axially extending ribs securely affixed to the floor and defining sidewalls of a channel therebetween.
48. A method according to claim 47, wherein the channel as a substantially planar floor.
49. A method according to claim 44, wherein the at least one rib is a single axially extending rib.
50. A method according to claim 44, wherein the floor is generally planar, and wherein the at least one rib is transversely offset from an axially extending centerline of the product chute.
51. A method according to claim 44, wherein the at least one rib urges a target object entering the product chute away from an outer wall of the product chute.
52. A method according to claim 44, wherein the object is a meat object.
53. A method according to claim 52, wherein the meat object is ham.
54. A method according to claim 52, wherein the meat object comprises turkey held in a mold.
55. A method according to claim 52, wherein the meat object comprises poultry.
Type: Application
Filed: Dec 17, 2003
Publication Date: Apr 7, 2005
Inventors: Samuel Griggs (Raleigh, NC), Dennis May (Pittsboro, NC)
Application Number: 10/738,315