APPARATUS FOR TRANSFERRING CONTAINERS AND THEIR CONTENTS, AND METHODS OF MAKING AND USING THE SAME
20200324982 ยท 2020-10-15
Assignee
Inventors
Cpc classification
B65G49/061
PERFORMING OPERATIONS; TRANSPORTING
B65G61/00
PERFORMING OPERATIONS; TRANSPORTING
B25J15/00
PERFORMING OPERATIONS; TRANSPORTING
B25J15/0004
PERFORMING OPERATIONS; TRANSPORTING
B25J9/0093
PERFORMING OPERATIONS; TRANSPORTING
B65G47/902
PERFORMING OPERATIONS; TRANSPORTING
International classification
Abstract
An apparatus that includes a clamp configured to secure one or more containers, a conveyor, a housing, a mechanism configured to raise or lower the clamp and the container(s), and a connector is disclosed. The conveyor or other object or structure has a planar surface configured to cover the container(s). The housing encloses the clamp and is configured to house and/or mechanically support the conveyor or other object or structure. The mechanism is configured to raise or lower the clamp and the container(s) relative to the conveyor or other object or structure. The connector is configured to connect or couple the apparatus to a robotic arm. Methods of making and using the apparatus are also disclosed.
Claims
1. An apparatus, comprising: a clamp configured to secure one or more containers; a conveyor or other object or structure having a planar surface configured to cover the one or more containers; a housing enclosing the clamp and configured to house and/or mechanically support the conveyor or other object or structure; a mechanism configured to raise or lower the clamp and the one or more containers relative to the conveyor or other object or structure; and a connector configured to connect or couple the apparatus to a robotic arm.
2. The apparatus of claim 1, wherein the conveyor or other object or structure comprises a flat, inflexible surface.
3. The apparatus of claim 1, wherein the conveyor or other object or structure comprises a conveyor belt on a plurality of rollers, supported by a frame or support.
4. The apparatus of claim 3, wherein the connector is secured or affixed to an outer surface of the frame or support.
5. The apparatus of claim 1, wherein the clamp is secured or affixed to an inner surface of the housing.
6. The apparatus of claim 1, wherein the housing includes side walls or guides configured to keep article(s) or object(s) on the conveyor or the planar surface of the other object or structure when the mechanism raises the clamp and the one or more containers.
7. The apparatus of claim 1, wherein the mechanism includes one or more hydraulics, pneumatics, or motors.
8. The apparatus of claim 1, wherein the clamp is configured to secure a plurality of containers.
9. A method of transferring articles or objects in one or more containers, comprising: securing the one or more containers in a first location with a clamp in an apparatus configured to transfer the articles or objects in the one or more containers to a second location, the apparatus further comprising a conveyor or other object or structure having a planar surface; pressing or holding the containers against the planar surface of the conveyor or other object or structure; rotating the apparatus by more than 90 using a robotic arm to which the apparatus is attached or connected while the one or more containers are pressed or held against the planar surface of the conveyor or other object or structure to invert the one or more containers; transferring the one or more containers near or adjacent to the second location using the robotic arm; raising the clamp and the one or more containers; and transferring the articles or objects of the one or more containers to the second location.
10. The method of claim 9, wherein the apparatus is rotated by about 180.
11. The method of claim 9, comprising repeating the method until the articles or objects of an entire stack of containers including the one or more containers have been transferred to the second location.
12. The method of claim 9, wherein the conveyor or other object or structure comprises a flat, inflexible surface.
13. The method of claim 9, wherein the conveyor or other object or structure comprises a conveyor belt on a plurality of rollers, supported by a frame or support.
14. The method of claim 9, wherein a flat surface or another container is at the second location.
15. The method of claim 14, further comprising orienting the apparatus so that the conveyor or other object or structure is aligned with the flat surface or the other container.
16. The method of claim 9, wherein the clamp is attached, secured or affixed to a housing in the apparatus.
17. The method of claim 16, wherein the conveyor or other object or structure is in the housing.
18. The method of claim 17, wherein the housing includes side walls or guides configured to keep the articles or objects on the conveyor or the planar surface of the other object or structure.
19. The method of claim 9, wherein the clamp and the one or more containers are raised using one or more hydraulics, pneumatics, or motors.
20. A method of making an apparatus configured to transfer articles or objects from one or more containers to another location, comprising: attaching or affixing a clamp configured to secure the one or more containers to an interior surface of a housing configured to house and/or mechanically support a conveyor or other object or structure having a planar surface configured to cover the container(s) and convey articles or objects in the container(s); operably attaching or affixing to the housing and to the conveyor or other object or structure a mechanism configured to raise or lower the clamp and the container(s) relative to the conveyor or other object or structure; and joining, affixing or attaching to the apparatus a connector configured to connect or couple the apparatus to a robotic arm.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
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DETAILED DESCRIPTION
[0023] Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the accompanying drawings. While the invention will be described in conjunction with the following embodiments, it will be understood that the descriptions are not intended to limit the invention to these embodiments. On the contrary, the invention is intended to cover alternatives, modifications and equivalents that may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be readily apparent to one skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, components, and circuits have not been described in detail so as not to unnecessarily obscure aspects of the present invention.
[0024] The technical proposal(s) of embodiments of the present invention will be fully and clearly described in conjunction with the drawings in the following embodiments. It will be understood that the descriptions are not intended to limit the invention to these embodiments. Based on the described embodiments of the present invention, other embodiments can be obtained by one skilled in the art without creative contribution and are in the scope of legal protection given to the present invention.
[0025] Furthermore, all characteristics, measures or processes disclosed in this document, except characteristics and/or processes that are mutually exclusive, can be combined in any manner and in any combination possible. Any characteristic disclosed in the present specification, claims, Abstract and Figures can be replaced by other equivalent characteristics or characteristics with similar objectives, purposes and/or functions, unless specified otherwise.
[0026] In various embodiments, a robotic arm mounts the top of the destacker apparatus, where it is able to move the destacker apparatus into any position within its reach. The robotic arm mount is attached to a housing containing a conveyor or other transfer surface. The conveyor housing (which may house or secure a clamp therein that grips the containers) moves up and down in relation to the conveyor. With the ability to move the conveyor to sit against the openings of the containers, the product (in the containers) remains isolated and does not fall out of the containers when the apparatus is moved to an inverted position. The clamp in the housing can hold one or multiple containers through the transition from an original position to a final position.
[0027] An Exemplary Destacker Apparatus
[0028]
[0029] The housing 117 comprises materials sufficiently thick, stiff and strong to perform the functions described herein. Suitable examples of such materials include plywood (e.g., having a thickness of at least 0.5 inches or 1.25 cm), plastic (e.g., HDPE or a polycarbonate having a thickness of at least 0.625 inches or 1.5 cm), or metal (e.g., aluminum or steel having a thickness of at least 0.125 inches or 0.25 cm). The housing 117 may further comprise an end wall 119a having a height similar or equal to that of the sidewalls 115. Alternatively, the uppermost surface of the end wall 119a as shown in
[0030] The housing 117 generally has dimensions effective to enclose the conveyor 120 and the upper or open ends of the containers 110. In some embodiments, the sidewalls 115a-b and optionally one or both end walls 119a-b may comprise double-walled structures, with a space or enclosure between the two walls for hydraulics, pneumatics, motors, etc., as discussed herein. In such embodiments, one of the two walls may include a door, hatch or other (optionally closeable) opening configured to allow access to one or more of the hydraulics, pneumatics, motors, etc.
[0031] The clamp 105a-b may comprise one or more pairs of opposing braces, brackets or similar structures mounted on the interior surfaces of end walls 119a-b and/or sidewalls 115a-b, configured to reversibly apply pressure to sides of the containers 110. Alternatively, when the containers 110 have outwardly-extending upper lips or edges along their uppermost surfaces or edges, the clamp 105a-b may simply comprise an extendable and retractable structure configured to support the upper lips or edges of the containers 110, without necessarily applying a force to the sides of the containers 110. Each of the clamp sections 105a-b may comprise two or more colinear pieces, rather than a single section. Each clamp section 105 may comprise wood (e.g., a standard 24, 26, or 28 having a length less than the width of the interior of the housing 117), metal (e.g., aluminum or steel), or plastic (e.g., HDPE), and may be covered on at least the interior-facing surface and optionally the upward-facing surface with a padding such a cloth, foam rubber, etc. The clamp sections 105a-b may thus have dimensions of from 12 inches (30 cm) to 60 inches (150 cm) in length, 2 inches (5 cm) to 12 inches (30 cm) in width, and 0.25 inch (0.6 cm) to 4 inches (10 cm) in thickness, or any value or range of values therein, although other values are certainly possible.
[0032] The clamp sections 105a-b may be driven (e.g., extended and retracted) by one or more hydraulics, pneumatics, motors, or similar reversible mechanism configured to extend and retract the clamp section 105 a short distance (e.g., about 1-10 cm). Alternatively, the clamp sections 105a-b may be spring-loaded, and the housing 117 may have one or more levers fixed thereto to retract (e.g., load) the spring(s) and one or more clips or other retaining mechanisms to hold the clamp section in place after retracting the spring(s).
[0033] The conveyor 120 may comprise a belt suspended on a plurality of rollers 122a-h. The conveyor 120 may have length and width dimensions similar to or slightly smaller than those of the interior of the housing 117. The rollers 122a-h may have a diameter of 1-8 inches (2.5-20 cm), although they are not so limited. The rollers 122a-h may be mounted on a separate frame or similar support (not shown) within the interior of the housing 117. In some embodiments, the frame or support for the rollers 122a-h is not fixed to the walls of the housing 117 to which the clamp 105 is attached. For example, the frame or support for the rollers 122a-h may be fixed to or mounted on the end walls 119a-b, and the clamp 105 may be fixed or attached to the side walls 115a-b. At least one of the rollers 122a-h may be rotationally driven by a variable-speed motor (not shown) at a relatively low speed (e.g., up to about 100 rpm), so that the belt advances at a maximum rate or velocity of about 10-20 feet/min (about 3-6 m/min).
[0034] Alternatively, the conveyor 120 may comprise a flat, inflexible surface, such as plywood, metal or plastic as described herein. The inflexible surface should have a stiffness or an elastic modulus (e.g., Young's modulus, shear modulus, or bulk modulus) sufficient to support the weight of the articles or objects in the container(s) 110 without significant deformation, and be configured so that the articles or objects in the container(s) 110 roll or slide down it when it is tilted or angled.
[0035] The destacker apparatus 100 may be connected to a robotic arm 125 through a mount or connector 130 connected or affixed to a frame 140 that supports the conveyor 120. The mount or connector 130 may freely rotate to allow the destacker apparatus 100 to position and/or align the container(s) 110 as desired (e.g., in a two-dimensional plane).
[0036] As shown in
[0037] In some embodiments, the connector 130 comprises a first connecting portion affixed or attached to the substantially lateral interface portion 142, and a second, complementary and/or mating connecting portion affixed or attached to the robotic arm 125. The first and second connecting portions of the connector 130 connect to each other in a manner enabling the apparatus 100 to be securely joined to the robotic arm 125, and for the apparatus 100 to rotate around an axis orthogonal to the center of the connector 130. The connector 130 is generally conventional, and will not be described in greater detail herein.
[0038] The substantially lateral interface portion 142 may comprise a relatively flat or planar sheet of inflexible material, such as plywood (e.g., at least 0.75 inches [2 cm] thick), metal (e.g., aluminum at least 0.25 inches [0.6 cm] thick, steel at least 0.125 inches [0.3 cm] thick, etc.), plastic (e.g., HDPE or polycarbonate at least 0.5 inches [1.25 cm] thick), or a combination thereof. The substantially lateral interface portion 142 may have a width the same as or smaller than the width of the interior of the housing 117 and a length of from 50-100% of the length of the interior of the housing 117. The width of the substantially lateral interface portion 142 may be at least 90% or 95% of the width of the interior of the housing 117.
[0039] The frame 140 may comprise four (4) supports or legs 144a-c (the fourth support or leg is not visible in
[0040] Alternatively, the frame 140 may comprise a unitary piece, comprising a central connecting portion (joined to the connector 130) and a plurality of curved or angled legs connecting the central connecting portion to the conveyor 120 (or frame or support therefor) or the mechanism for lifting the housing and sidewalls 115/117 relative to the conveyor 120 and/or the frame 140. The shape and dimensions of the legs can be substantially any shape or dimension, as long as the legs do not interfere with the movement of the articles or products on the conveyor 120 after the containers 110 are flipped over and the housing and sidewalls 115/117 are raised or lifted relative to the conveyor 120 and/or the frame 140.
[0041] The robotic arm 125 is configured to rotate and translate the destacker apparatus 100. The robotic arm 125 is able to move freely in 3 rotational degrees of freedom, and in some embodiments, one or more linear degrees of freedom. For example, the robotic arm 125 may include one or more rotating joints 132, 134 and 136, configured to rotate at least part of the robotic arm 125 around an axis and/or within a two-dimensional plane. A first rotating joint 132 is configured to rotate the mount or connector 130 around an axis perpendicular to the axis around which the mount or connector 130 rotates and parallel with the two-dimensional plane in which the destacker apparatus 100 rotates. A second rotating joint 134 is configured to rotate the mount or connector 130 and the first rotating joint 132 around an axis parallel or coaxial with a central axis of the main body of the robotic arm 125. A third rotating joint 136 is configured to raise and lower the main body of the robotic arm 125 by rotation around an axis parallel with a horizontal two-dimensional plane (e.g., the ground). In some embodiments, the main body of the robotic arm 125 includes a telescoping mechanism configured to extend and retract at least the mount or connector 130 and the first rotating joint 132 (and, optionally, the second rotating joint 134). The robotic arm 125 can move the destacker apparatus 100 to any position substantially within reach.
[0042] The destacker apparatus 100 may secure one or more containers 110 (e.g., from a stack of containers) using the clamp 105a-b. As shown, six containers 110 are arranged in a 2-by-3 matrix. However, other arrangements of containers are possible, such as 2-by-2, 1-by-3, 2-by-4, etc. (i.e., an x-by-y matrix of containers, where one of x and y is an integer of at least 1, and the other of x and y is an integer of at least 2). The destacker apparatus 100 may also secure a single container 110. The containers 110 may have dimensions of from 18 inches (45 cm) to 60 inches (150 cm) in length, 9 inches (22.5 cm) to 36 inches (90 cm) in width, and 6 inches (15 cm) to 36 inches (90 cm) in depth, or any value or range of values therein, although other values are certainly possible. Similarly, the containers 110 can be square or rectangular (e.g., when viewed from the top or bottom), but other shapes are acceptable (e.g., circular, oval, hexagonal, octagonal, etc.), as long as the claim 105a-b has an interface that complements or mates with the shape of the container(s) 110. The containers 110 are generally open at the top, and may include articles or objects, such as food product(s) (e.g., fruits or vegetables), therein.
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[0045] For example, a mechanism for lifting the housing and sidewalls 115/117 relative to the conveyor 120 and the frame 140 may comprise a hydraulic or pneumatic cylinder and/or piston having one end secured to the frame 140 or a frame or support for the conveyor 120 and another (opposite) end within and/or secured to one of the sidewalls 115a-b or end walls 119a-b. The hydraulic or pneumatic cylinder and/or piston may be extended and retracted conventionally. In some embodiments, the mechanism for lifting the housing and sidewalls 115/117 relative to the conveyor 120 and the frame 140 comprises two such hydraulic or pneumatic cylinders and/or pistons, secured to opposite sides of the frame 140 or frame/support for the conveyor 120, and to opposite sidewalls 115a-b or end walls 119a-b. in other embodiments, the mechanism for lifting the housing and sidewalls 115/117 relative to the conveyor 120 and the frame 140 comprises four hydraulic or pneumatic cylinders and/or pistons, secured to opposite sides and ends of the frame 140 or frame/support for the conveyor 120, and to opposite sidewalls 115a-b or end walls 119a-b at or near opposite ends thereof.
[0046] Alternatively, one or more motors may operate a mechanical device for lifting the housing and sidewalls 115/117 relative to the conveyor 120 and the frame 140. The motor(s) may be secured in one or more one of the sidewalls 115a-b or end walls 119a-b, and the mechanical device(s) may be secured to the frame 140 or frame/support for the conveyor 120. For example, the motor may drive (extend) and retract the mechanical device using one or more conventional mechanisms (e.g., gears and toothed rods/shafts, cams and camshafts, etc.). Regardless of the specific mechanism for lifting the housing and sidewalls 115/117 relative to the conveyor 120 and the frame 140, the housing and sidewalls 115/117 may be lifted by a distance or height of from 6-40 inches (15-100 cm), or any distance/height or range of distances/heights therein, although the invention is not so limited.
[0047] An Exemplary Method of Transferring Articles or Objects from One or More Containers
[0048]
[0049] At step 305, one or more containers 110 are secured from a stack of containers 107 using the clamp 105a-b (shown in
[0050] At step 310, the destacker apparatus 100 is rotated using the robotic arm 125 such that the containers 110 are rotated 180 and content(s) of the containers 110 contact the conveyor 120.
[0051] At step 315, the containers 110 are moved near or adjacent to a predetermined final location.
[0052] At step 320, the housing 117 and the clamped containers 110 are raised (or separated from the conveyor 120 and/or conveyor frame 140) to open the destacker apparatus 100. The content(s) of the containers 110 are now ready to be conveyed or transferred out of the containers 110 through the opening 135.
[0053] At step 325, the product(s) 140 are transferred to the external conveyor 200 through the opening 135 using the conveyor 120 in the apparatus 100. In alternative embodiments, the conveyor 120 may be replaced with a relatively flat, inflexible surface instead, and the surface may be tilted (e.g., using the robotic arm 125 and/or robotic lever 220) such that the products 150 are transferred through the opening 130 by gravity (e.g., when the product[s] are articles or objects that can roll or self-translate, such as round articles or objects [e.g., oranges]).
[0054] At step 330, the apparatus 100 is positioned over the stack of containers 107 once again, and steps 305-325 are repeated until all of the containers in the stack 107 are emptied of their content(s). Repeating the steps 305-325 may result in the containers in the stack 107 being restacked in a different location, generally in reverse order.
[0055] Exemplary Methods of Making an Apparatus Configured to Transfer Articles or Objects from One or More Containers to Another Location
[0056] The present invention also relates to a method of making the present apparatus (e.g., the destacker apparatus 100). This method may comprise attaching or affixing a clamp configured to secure one or more containers to an interior surface of a housing configured to house and/or mechanically support a conveyor or other object or structure having a planar surface configured to cover the container(s) and convey articles or objects in the container(s), operably attaching or affixing to the housing and to the conveyor or other object or structure a mechanism configured to raise or lower the clamp and the container(s) relative to the conveyor or other object or structure, and joining, affixing or attaching to the apparatus a connector configured to connect or couple the apparatus to a robotic arm. In some embodiments, the clamp may be configured to secure a plurality of containers.
[0057] As for the present apparatus, the conveyor or other object or structure in various embodiments of the method may comprise a flat, inflexible surface, or alternatively, a conveyor belt on a plurality of rollers, supported by a frame or support. In such embodiments, the connector may be secured or affixed to an outer surface of the frame or support. The materials and dimensions of the various structures in the housing, the conveyor, and the frame may be as described herein for the present apparatus.
[0058] The method may further comprise assembling the housing, which may comprise joining side walls or guides to opposite ends of at least one end wall. The side walls or guides and the end wall as generally as described herein. The side walls are configured to keep articles or objects on the conveyor (or the planar surface of the other object or structure) when the mechanism raises the clamp and the container(s).
[0059] As for the present apparatus, the mechanism configured to raise or lower the clamp and the container(s) in various embodiments of the method includes one or more hydraulics, pneumatics, or motors, as described herein. Thus, the method may comprise fixing, attaching or mounting the frame or support for the conveyor on or to the end walls of the housing, and fixing, mounting or attaching the clamp to or on the side walls of the housing. In other or further embodiments, the method may further comprise joining, affixing or attaching an end of the frame distal from the connector (e.g., orthogonal supports or legs 144a-c) to the conveyor, a separate frame or support therefor, or to the mechanism that lifts the housing and sidewalls relative to the conveyor and the frame.
[0060] The method may also comprise securing one end of the mechanism(s) for lifting the housing and sidewalls (e.g., a hydraulic or pneumatic cylinder and/or piston having) to the frame or to a separate frame or support for the conveyor, and securing another (opposite) end of the mechanism(s) within or to one of the sidewalls or end walls of the housing. Securing plural mechanisms for lifting the housing and sidewalls relative to the conveyor and the frame may comprise securing hydraulic or pneumatic cylinders and/or pistons, or motors and mechanical devices (as described herein), to opposite sides and ends of the frame or frame/support for the conveyor, and at or near opposite ends of the mechanisms to opposite sidewalls or end walls.
[0061] The method may also further comprise affixing or attaching a first connecting portion of the connector to the frame (e.g., substantially lateral interface portion 142), and affixing or attaching a second connecting portion to the robotic arm. The second connecting portion is complementary to and/or configured to mate with the first connecting portion. The first and second connecting portions of the connector are as described above for the present apparatus.
CONCLUSION/SUMMARY
[0062] The foregoing descriptions of specific embodiments of the present invention have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the Claims appended hereto and their equivalents.