Reformer Assembly

Abstract

To provide a base reformer assembly and / or a base reformer roller die unit that have robust cross-sectional area.SOLUTION: A base reformer assembly and / or a base reformer roller die unit 130 include a generally toroidal chuck, a roller die, and a roller die unit actuating assembly 250. The roller die is movably disposed within the chuck. The roller die unit actuating assembly 250 is structured to actuate the roller die. The roller die unit actuating assembly 250 is operatively coupled to the roller die. Further provided are all elements of the roller die unit actuating assembly 250.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] <Cross - Reference to Related Applications> This application claims priority to U.S. Patent Application No. 16 / 542,378, filed on August 16, 2019, entitled "REFORMER ASSEMBLY".

[0002] <Field of the Invention> The concepts disclosed and claimed relate to a Necker machine, and more particularly, to a Necker machine in which a robust base reformer assembly has a limited number of elements in its drive assembly.

Background Art

[0003] Can bodies are typically made by body manufacturers. That is, body manufacturers form blanks, such as but not limited to disks or cups, into elongated can bodies. A can body includes a base and an associated sidewall. The sidewall is open at an end opposite the base. Body manufacturers typically include a ram / punch that moves the blank through a plurality of dies to make the can body. After forming, the base of the can body includes a recessed dome that extends into the enclosed space defined by the can body. The can body is discharged from the ram / punch and placed on a pallet for further processing, such as but not limited to trimming, washing, printing, flanging, inspection, etc., and the pallet is fed to a filler. In the filler, the cans are removed from the pallet, filled, the can ends are attached thereto, and the filled cans are packaged into 6 - pack and / or 12 - pack cases, etc.

[0004] Some can bodies are further formed in a Necker machine. The Necker machine is configured to reduce the diameter / radius of the open end of the can body; that is, the open end is smaller than the diameter / radius of the rest of the can body sidewall. Typically, a Necker machine processes more than 3,000 can bodies per minute. A Necker machine includes several processing and / or forming stations arranged in series. Furthermore, each forming station processes multiple can bodies at once. In an exemplary embodiment, the forming station includes 12 forming units. Once a can body is placed in a forming unit, the forming unit moves along a path while forming the can body. The forming unit then ejects the can body and moves back to its initial position to receive the next can body. It is understood that other forming units in the forming station follow similar paths and operate in a similar manner. Thus, in such a station, there are several can bodies with different forming stages being performed, and the number of forming units receiving / ejecting can bodies or moving to the receiving position for the next can body is more limited.

[0005] Furthermore, the processing and / or forming stations are located adjacent to each other, and the transport assembly moves the can bodies between adjacent processing and / or forming stations. As the can bodies move through the necker machine, they generally remain within the same plane. That is, viewed from the front of the necker machine, the can bodies move, for example, from left to right, while remaining within the same plane. In this configuration, "starwheels" are used to quickly move the can bodies between forming stations without moving them in and out of the overall plane of operation. In other words, this configuration simplifies the transport assembly.

[0006] However, this configuration also means that the molding assembly must operate in a confined space or plane. This means that the molding assembly has limited space to position its molding elements. In other words, the molding assembly is generally positioned between the front of the necker machine (or drive assembly) and the moving surface of the can body. Typically, the space between the front of the necker machine and the moving surface of the can body is about 18 inches. Therefore, each molding assembly is limited in length approximately perpendicular to the moving surface of the can body. This configuration leads to known problems.

[0007] In other words, the molding assembly must consist of molding and drive elements within the limited length / space allowed, as described above. This, in turn, means that many of the molding / drive elements are smaller than desired. That is, when molding 3,000 can bodies per minute, the molding / drive elements will wear out. Therefore, large and robust elements are generally desirable, but due to space limitations, these elements are usually smaller than desired. Consequently, these elements often require maintenance or replacement. This is a problem.

[0008] For example, a certain station in a Necker machine is typically a base reformer. A base reformer station is a station that uses a die to reform, or reshape, the base of a can body. As is well known, the aforementioned body makers produce can bodies having an annular ring with an inwardly facing dome-shaped portion surrounded by it. The base reformer station improves the body strength of the base by reforming the annular ring by changing the shape of the inner base of the can body. This makes it possible to reduce the thickness of the can body and reduce the amount of metal used. In the prior art, the base reformer includes a roller die, which is configured to fit within the space defined by the dome of the can body. When the can body is transported to the base reformer unit, the forming die (hereinafter, "reform die") is positioned approximately in the center relative to the base. Since the cross-sectional area of ​​the reform die is smaller than the dome, the reform die is positioned within the base of the can body and does not come into contact with the base of the can body. As described above, as the base reformer unit moved along its path, the reforming die moved radially outward, contacting and reforming the base of the can body. After the base reformer unit reformed the base, the reforming die returned to its central position, and the can body was ejected and moved to the next molding station.

[0009] Each base reformer unit contained various drive units. For example, a cam-operated drive assembly moved the reform die radially from its central position until it engaged with the base of the can body. A gear-driven drive unit was used to rotate the reform die around the base of the can body. Given the available space in such drive assemblies, gears, and especially the teeth of the gears, are examples of elements with a size that is prone to wear. In other words, such elements in drive assemblies are the type of elements that require frequent maintenance and replacement, just like other elements. Such elements are problematic.

[0010] Furthermore, due to the limited space in the base reformer unit, desirable elements / assemblies may not be included. For example, the reform die was positioned and held in place on a selected plane using bushings. That is, the reform die included a flange extending outward at an offset position from the forming portion of the reform die, i.e., the portion that contacts the base of the can body. This flange was positioned between two substantially parallel annular bushings. In some embodiments, friction between the reform die and the bushings was further reduced using a lubricant, such as grease. However, the bushings were exposed to the factory atmosphere when the can body was not positioned in the base reformer unit. Therefore, the bushings and / or lubricants were exposed to contaminants. This is problematic. Moreover, due to the limited available space as described above, structures such as sealed thrust bearings, but not limited to such bushings, were not used. This is also problematic.

[0011] Note that the reforming die was a roughly cylindrical roller die, and its radius was much smaller than the dome radius. Therefore, the reforming die did not get caught or obstruct the movement of the can body after base reforming. Consequently, in conventional base reformer assemblies, there was no need to add auxiliary members when moving the can body from the base reformer assembly. As will be discussed later, if the radius of the reforming die is large, that is, if the radius is smaller than the dome radius but is almost the same size, there is a possibility that the reforming die and the can body will interfere with each other. In other words, there is a possibility that the can body will be loosely caught between the reforming die and the chuck. This is a problem. In short, the problem is that the base reformer assembly does not have a can body discharge device.

[0012] Therefore, a base reformer assembly and / or base reformer roller die unit having a robust cross-sectional area is required. Furthermore, a base reformer assembly and / or base reformer roller die unit without gears is required. Furthermore, a base reformer assembly and / or base reformer roller die unit including a friction reduction device in which friction reduction elements are enclosed is required. Furthermore, a base reformer assembly and / or base reformer roller die unit including a can body discharge system that assists in discharging can bodies from the base reformer assembly is required. [Overview of the project]

[0013] These and other requirements are met by at least one embodiment of the present invention, which provides a base reformer assembly and / or base reformer roller die unit including a substantially annular chuck, a roller die, and a roller die unit actuation assembly. The roller die is movably positioned within the chuck. The roller die unit actuation assembly is configured to actuate the roller die. The roller die unit actuation assembly is operably coupled to the roller die. Furthermore, all elements of the roller die unit actuation assembly have a robust cross-sectional area. This solves the problems described above.

[0014] In further or alternative embodiments, the roller die unit actuation assembly does not include any gears. This solves the problems described above. In further or alternative embodiments, the roller die unit actuation assembly is a cam-actuated actuation assembly. This solves the problems described above. In further or alternative embodiments, the roller die unit actuation assembly includes a friction reduction device having a sealed friction reduction element. This solves the problems described above. In further or alternative embodiments, the base reformer assembly and / or base reformer roller die unit includes a can body discharge system. This solves the problems described above.

Brief Description of the Drawings

[0015] The present invention can be fully understood from the following description of preferred embodiments when read in conjunction with the accompanying drawings.

[0016] [Figure 1] FIG. 1 is a schematic cross-sectional view of a can body. [Figure 2] FIG. 2 is an isometric view of a necker machine. [Figure 3] FIG. 3 is another isometric view of a necker machine. [Figure 4] FIG. 4 is a front view of a necker machine. [Figure 5] FIG. 5 is a partial isometric view of a base reformer station. [Figure 6] FIG. 6 is a partial side cross-sectional view of a base reformer station. [[ID=??]] [Figure 7] FIG. 7 is an isometric view of a base reformer assembly. [Figure 8] FIG. 8 is a front view of a base reformer assembly. [Figure 9] FIG. 9 is a rear view of a base reformer assembly. [Figure 10] FIG. 10 is a side cross-sectional view of a base reformer assembly. [Figure 11] FIG. 11 is a side cross-sectional view of a base reformer roller die unit. [Figure 12] FIG. 12 is an isometric view of a cam plate. [Figure 13] FIG. 13 is a rear view of a cam plate. [Figure 14] FIG. 14 is an isometric view of a roller die unit actuating assembly. [Figure 15A] FIG. 15A is an axial view showing the general relative movement of the roller die unit actuating assembly elements. [Figure 15B] FIG. 15B is an axial view showing the general relative movement of the roller die unit actuating assembly elements. [Figure 15C] Figure 15C is an axial view showing an overview of the relative movement of the roller die unit operating assembly elements. [Figure 15D] Figure 15D is an axial view showing an overview of the relative movement of the roller die unit operating assembly elements. [Figure 15E] Figure 15E is an axial view showing an overview of the relative movement of the roller die unit operating assembly elements. [Figure 15F] Figure 15F is an axial view showing an overview of the relative movement of the roller die unit operating assembly elements. [Figure 16] Figure 16 is an isometric view of the can body discharge system with a partial breakaway.

Embodiments for Carrying Out the Invention

[0017] It is understood that the specific elements shown in the drawings and described in the following description are merely exemplary embodiments of the disclosed concepts and are provided as non-limiting examples for illustration only. Accordingly, specific dimensions, orientations, assemblies, the number of components used, the configurations of the embodiments, and other physical characteristics of the embodiments disclosed herein should not be considered as limitations regarding the scope of the disclosed concepts.

[0018] Directional expressions used herein, such as clockwise, counterclockwise, left, right, up, down, upward, downward, and their derivatives, are related to the orientation of the elements shown and do not limit the claims unless expressly stated in the claims.

[0019] As used herein, the singular forms of "a" and "the" include the plural unless the context clearly dictates otherwise.

[0020] In this specification, "[configured to] [verb]" means that the specified element or assembly has a structure that is formed, sized, positioned, combined, and / or configured to perform the specified verb. For example, a member "configured to move" is operably combined with another element and contains an element that moves the member, or the member is configured to move in a different way in response to another element or assembly. Thus, in this specification, "[configured to] [verb]" describes a structure, not a function. Furthermore, in this specification, "[configured to] [verb]" means that the specified element or assembly is intended and designed to perform the specified verb. Thus, an element that is merely capable of performing the specified verb but is not intended and designed to perform the specified verb is not "[configured to] [verb]".

[0021] In this specification, “related” means that elements are part of the same assembly and / or work together or interact with each other in some way. For example, a car has four tires and four hubcaps. All elements are connected to the car's parts, but each hubcap is understood to be “related” to a particular tire.

[0022] In this specification, “coupling assembly” includes two or more couplings or coupling components. Components of a coupling or coupling assembly are generally not the same element or part of another component. Therefore, components of a “coupling assembly” may not be described simultaneously in the following description.

[0023] In this specification, “coupling” or “coupling component” refers to one or more components of a coupling assembly. That is, a coupling assembly includes at least two components configured to be coupled to one another. The components of a coupling assembly are understood to be interchangeable. For example, in a coupling assembly, if one coupling component is a snap socket, the other coupling component is a snap plug, and if one coupling component is a bolt, the other coupling component is a nut or screw hole. Furthermore, the passages of elements are part of a “coupling” or “coupling component.” For example, in an assembly in which two wooden boards are coupled by a nut and a bolt extending through their passages, the nut, the bolt, and the two passages are each a “coupling” or “coupling component.”

[0024] In this specification, “fastener” refers to a separate component configured to join two or more elements. Therefore, for example, a bolt is a “fastener,” but a tongue-and-groove joint is not. In other words, a tongue-and-groove element is part of the elements being joined, and not a separate component.

[0025] In this specification, the expression “joining” two or more parts or components means that, insofar as a link occurs, those parts are connected or operate together directly or indirectly, i.e., through one or more intermediate parts or components. In this specification, “directly joined” means that two elements are in direct contact with each other. In this specification, “fixedly joined” or “fixed” means that two components are joined so that they move while maintaining a certain orientation relative to each other. In this specification, “adjustably fixed” means that two components are joined so that they move as one while maintaining a certain overall orientation or position relative to each other, and can move within a limited range or around one axis. For example, a doorknob is “adjustably fixed” to a door, and although the doorknob is rotatable, it is usually fixed in one position relative to the door. Furthermore, the cartridge (nib and ink tank) of a retractable pen is “adjustably fixed” to the housing, and the cartridge moves between a retracted position and an extended position, but its orientation relative to the housing is generally maintained. Thus, when two elements are joined, all parts of these elements are joined together. However, a description that a particular part of the first element is joined to the second element, for example, that the first end of the axle is joined to the first wheel, means that the particular part of the first element is positioned closer to the second element than other parts of the first element. Furthermore, an object that is placed in place on another object solely by gravity is not "joined" to the lower object unless the upper object is otherwise held almost in place. That is, for example, a book on a table is not joined to the table, but a book glued to a table is joined to the table.

[0026] In this specification, the expressions “removably joined” or “temporarily joined” mean that one component is substantially temporarily joined to another component. That is, the two components are joined in such a way that they can be easily connected or separated from each other without damaging the components. For example, two components fastened to each other by a limited number of easily accessible fasteners, i.e., fasteners that are not difficult to access, are “removably joined,” while two components joined by welded or difficult-to-access fasteners are not “removably joined.” A “difficult-to-access fastener” is a fastener that requires the removal of one or more other components before access to the fastener, and “other components” are not limited to, but are not means of access such as doors.

[0027] In this specification, "operably coupled" means that multiple elements or assemblies that are movable between a first position and a second position, or between a first arrangement and a second arrangement, are coupled such that the first element moves from one position / arrangement to the other, and the second element also moves between the two positions / arrangements. The first element may also be "operably coupled" to another element in such a way that the reverse is not true.

[0028] In this specification, “functionally coupled” means that several elements or assemblies are coupled to one another so that the features and / or functions of one element / assembly are communicated to or usable by the other element / assembly. For example, the feature of an extension cord is its ability to transmit electricity. Two extension cords are “functionally coupled” if they are coupled so that electricity can be transmitted through both extension cords. In another example, two wireless routers, each having the feature to transmit data, are “functionally coupled” if they are connected to each other (but not physically coupled to each other) so that data can be transmitted through both routers.

[0029] In this specification, the expression "engages" between two or more parts or components means that those elements exert force on or bias each other directly or through one or more intermediate elements or components. Furthermore, with respect to moving parts, in this specification, a moving part may "engage" with another element while moving from one position to another, and / or may "engage" with another element once it reaches the described position. Thus, the expression "When element A moves to the first position of the element, it engages with element B" and "When element A is in the first position of the element, it engages with element B" are equivalent expressions, and this expression is understood to mean that element A engages with element B while moving to the first position of the element, and / or engages with element B while in the first position of the element.

[0030] In this specification, “operationally engaged” means “engaged and moved.” That is, when “operationally engaged” is used for a first component configured to move a movable or rotatable second component, it means that the first component applies sufficient force to move the second component. For example, a screwdriver can be positioned in contact with a screw. If no force is applied to the screwdriver, the screwdriver merely “temporarily coupled” to the screw. When an axial force is applied to the screwdriver, the screwdriver is pressed against the screw and “engaged” to the screw. However, when a rotational force is applied to the screwdriver, the screwdriver “operationally engages” with the screw and rotates the screw. Furthermore, in the case of electronic components, “operationally engaged” means that one component controls another component by a control signal or current.

[0031] In this specification, “temporarily placed” means that the first element or assembly is in a position that allows the first element / assembly to be moved without separating the first element or otherwise manipulating it. For example, a book simply resting on a table, i.e., a book not glued or fixed to the table, is “temporarily placed” on the table.

[0032] In this specification, “corresponding” means that two structural components have similar size and shape to each other and can be joined with minimal friction. Therefore, an opening “corresponding” to a component is slightly larger than the component so that the component can pass through the opening with minimal friction. This definition is modified when two components fit together “tightly.” In such a situation, the amount of friction increases as the dimensional difference between the components becomes even smaller. If the element defining the opening and / or the component inserted into the opening is made of a deformable or compressible material, the opening may be slightly smaller than the component inserted into the opening. With respect to surfaces, shapes, and lines, two or more “corresponding” surfaces, shapes, or lines have substantially identical size, shape, and contour.

[0033] In this specification, when used in relation to a moving element, “path” or “route” includes the space through which the element traverses during its movement. Thus, a moving element essentially has a “path” or “route.” Furthermore, a “path” or “route” relates to the overall movement of one identifiable structure relative to another object. For example, assuming a perfectly smooth road, a rotating wheel of a car (an identifiable structure) moves very little relative to the car's body (another object). That is, the wheel as a whole does not change position relative to, for example, an adjacent fender. Therefore, a rotating wheel has no “path” or “route” relative to the car's body. Conversely, the air intake valve of that wheel (an identifiable structure) has a “path” or “route” relative to the car's body. That is, while the wheel is rotating and moving, the entire intake valve moves relative to the car's body.

[0034] In this specification, the term “integrated” means a component that is manufactured as a single piece or unit. In other words, a component consisting of multiple pieces that are manufactured separately and then joined together as a unit is not an “integrated” component or “integrated” structure.

[0035] In this specification, the term “several” means one or more integers (i.e., multiple). That is, for example, the phrase “several elements” means one or more elements. Note in particular that “several [x]” includes a single [x].

[0036] In this specification, in expressions such as "[x] moves between a first position and a second position" or "[y] is configured to move [x] between a first position and a second position", "[x]" is the name of an element or assembly. Furthermore, if [x] is an element or assembly that moves between multiple positions, the pronoun "it" refers to "[x]", i.e., the element or assembly referred to after the pronoun "it".

[0037] In this specification, a “radial side / face” of a circular or cylindrical body is a side / face that extends around its center or a height line passing through its center, or that surrounds its center or a height line passing through its center. In this specification, an “axial side / face” of a circular or cylindrical body is a face that extends in a plane that extends substantially perpendicular to a height line passing through the center of the cylinder. In other words, generally speaking, in the case of a cylindrical soup can, the “radial side / face” is the approximately circular side wall, and the “axial side / face” is the top and bottom of the soup can. Furthermore, in this specification, “extending radially” means extending radially, or extending along a radial line. That is, for example, a “radially extending” line extends from the center of the circle or cylinder toward the radial side / face. Furthermore, in this specification, “extending axially” means extending axially, or extending along an axis. In other words, for example, a line "extending in the axial direction" extends from the base of the cylinder to the top of the cylinder, approximately parallel to the longitudinal central axis of the cylinder.

[0038] In this specification, "approximately curved" refers to an element having multiple curved sections, a combination of curved sections and flat sections, or multiple flat sections or segments arranged at angles to each other to form a curve.

[0039] In this specification, “plate-like body” or “plate-like member” is a generally thin element comprising opposing, broad, substantially parallel surfaces, i.e., a plane of the plate-like member and a narrower end face extending between the broad, parallel surfaces. That is, in this specification, it is essential that the “plate-like” element has two opposing planes. The outer periphery and end face may include a generally straight portion, as in the case of a rectangular plate-like member, or may be curved, as in the case of a disc, or may have any other arbitrary shape.

[0040] In this specification, with respect to any adjacent ranges sharing a boundary, for example, 0% to 5% and 5% to 10%, or 0.05 inches to 0.10 inches and 0.001 inches to 0.05 inches, the upper limit of the lower range, i.e., 5% and 0.05 inches in the previous example, means slightly smaller than its specified boundary. That is, in the previous example, the range 0% to 5% means 0% to 4.999999%, and the range 0.001 inches to 0.05 inches means 0.001 inches to 0.04999999 inches.

[0041] In this specification, "upwardly attached" means an element that extends upward and nearly vertically from another element.

[0042] In this specification, the terms “can” and “container” are used substantially interchangeably to refer to any known or suitable container configured to hold contents (not limited to, for example, liquids, food or other suitable substances), and explicitly include, but not limited to, beverage cans such as beer and soda cans, as well as food cans.

[0043] In this specification, a "can body" has a bottom and attached or upward-attached side walls. The "can body" is a single unit. In this configuration, the "can body" defines a generally closed space. Therefore, the "can body," i.e., the bottom and side walls, also includes outer and inner surfaces. Thus, for example, the "can body" includes the inner surface and outer surface of the side walls.

[0044] In this specification, "centered" in expressions such as "[element, point, or axis] positioned around," "[element, point, or axis] extending around," or "[X] degrees around [element, point, or axis]" means enclosing, extending around, or measuring around it. When used in relation to a measurement or in a similar context, "about" means "approximately," i.e., an approximate range of the measurement as understood by those skilled in the art.

[0045] In this specification, an “extended” element essentially includes a longitudinal axis and / or longitudinal line extending in the direction of extension.

[0046] In this specification, “generally” means “in a general manner” in relation to the term being modified, as would be understood by those skilled in the art.

[0047] In this specification, “substantially” means “almost” in relation to the term being modified, as will be understood by those skilled in the art.

[0048] In this specification, "nite" means location and its vicinity in relation to the term being modified, as will be understood by those skilled in the art.

[0049] In this specification, "shaping" a metal means changing the shape of a metal structure.

[0050] In this specification, “molding distance” means the distance between two dies that is narrow enough for at least a portion of the dies to contact the material between them and mold it.

[0051] A movable die that engages with a metal moves along a “path” as defined above. When the die path shapes the metal, that is, changes the shape / contour of the metal, that path is referred to herein as a “forming path.” A “smoothing path” is a type of “forming path.” That is, when the die path smooths the surface of the metal but does not change the shape / contour of the metal, that path is referred to herein as a “smoothing path.”

[0052] In this specification, the “robust” cross-section or cross-sectional area of ​​elements other than connecting components such as bolts means a cross-section or cross-sectional area larger than the “small” cross-section or cross-sectional area. In this specification, the “small” cross-section or cross-sectional area is 0.1699999 in. 2 This refers to a cross-section or cross-sectional area less than 0.1699999 in. In this specification, the term "robust" is defined as "cross-sectional area" measured in a plane that is approximately perpendicular or normal to the surface of the element and passes through the center of the element. Therefore, elements other than spherical elements are understood to have one or more "cross-sectional areas." Any "cross-sectional area" of an element being 0.1699999 in. 2 If an element is less than a certain value, it does not have the "robust" cross-sectional area as defined herein. Furthermore, "element" means a single, identifiable component. For example, a spur gear has a roughly cylindrical wheel or disc-shaped body with teeth arranged on its outer circumference. (See Merriam-Webster Online Dictionary, https: / / www.merriam-webster.com / dictionary / spur%20gear, where "spur gear" is defined as "a gear with radially arranged teeth"). Thus, the gear body and teeth are identifiable components of a spur gear. Conversely, the "tooth tip" of a spur gear is not a "single, identifiable component." In other words, if an item is identified as part of another element, it is not a "single, identifiable component."

[0053] In this specification, “all elements of the roller die unit actuation assembly” means all elements except, but not limited to, coupling components such as bolts, nuts, pivot pins, and axles. That is, as described below or in one embodiment, the roller die unit actuation assembly 250 includes a parallel link 252, which is an assembly including a proximal first link member 260, a distal second link member 280, a cam follower assembly 300, and several coupling components / pivot pins (not indicated). Therefore, in this embodiment, “all elements of the roller die unit actuation assembly” means the first link member 260, the second link member 280, and the cam follower assembly 300, and does not include coupling components / pivot pins. In embodiments having other or further elements, it is understood that the term “all elements of the roller die unit actuation assembly” means all elements except coupling components.

[0054] In this specification, “cam-actuated actuation assembly” means an actuation assembly in which all movement is generated and / or caused by the interaction of several cams and cam followers.

[0055] In this specification, “friction reduction device” is a single structure or assembly configured to reduce friction between two or more other elements. “Friction reduction devices” include, but are not limited to, bushings and bearing assemblies. “Friction reduction device” does not mean lubricant itself; that is, certain bearing assemblies contain lubricant, and such bearing assemblies are “friction reduction devices.” Furthermore, in this specification, all “friction reduction devices” include “friction reduction elements.” For example, the surface of a bushing that contacts a moving element is a “friction reduction element.” Furthermore, the balls and lubricant in an annular ball bearing assembly are “friction reduction elements.” In this specification, a “sealed” friction reduction device is a friction reduction device in which the friction reduction elements are hardly exposed to the atmosphere. That is, an unsealed annular ball bearing assembly includes a first race, a second race, and a ball bearing. The ball bearing is positioned between the first and second races. Furthermore, a gap exists between the first and second races. Therefore, the ball bearing, i.e., the “friction reduction element,” is exposed to the atmosphere. In a sealed ball bearing assembly, a structure such as a seal fills the gap between the first and second races. Therefore, the ball bearing, i.e., the "friction-reducing element," is not exposed to the atmosphere. In this specification, with respect to the definition of "sealed," the phrase "barely exposed to the atmosphere" does not mean an airtight or airtight seal, but rather a seal that prevents the passage of solids such as dust and particulate matter, though not limited to such seals.

[0056] In this specification, “parallel link” means a link comprising multiple link members and a pivot element, configured to move a molding die in substantially a plane. Furthermore, the link members move in the plane of die motion and / or in a plane substantially parallel to the plane of die motion. In this specification, “link member” means a pivoting element and / or an element that defines pivot. In this specification, “pivot element” means an element that defines the axis of rotation of a link member, and includes, but is not limited to, a pivot pin. A “pivot element” is not a “link member.”

[0057] In this specification, “pivot” coupling means a rotational coupling in which the elements connected by the “pivot” coupling rotate by less than 360°. Similarly, in this specification, “rotatably” coupled means that the elements are rotatably coupled, but the range of motion of the elements connected “rotatably” is less than 360°. In other words, a “pivot” coupling is a rotational coupling, but the range of motion of the elements connected to it is limited. Therefore, the characteristics of the coupling are determined not by the coupling itself, but by the elements being coupled.

[0058] In this specification, "cam channel" means a groove or similar structure configured such that at least one surface defining the channel is a cam surface. In this specification, "side cam channel" means a "cam channel" having a structure in which the surface defining the side (or side portion) of the channel, rather than the base (or bottom) of the channel, is a cam surface. In this specification, "dual cam channel" means a "cam channel" that includes generally opposing and substantially parallel sides, configured such that both sides of the "cam channel" are cam surfaces.

[0059] In this specification, a “dual-level” cam channel means a “dual-side cam channel” in which one side of the cam channel defines a first cam surface that moves the cam follower in one direction, and the other side of the cam channel defines a second cam surface that moves the cam follower in the other direction. For example, if the cam channel is substantially straight, the first cam surface moves the cam follower laterally to the right, and the second cam surface moves the cam follower laterally to the left. Alternatively, if the cam groove is substantially circular, the first cam surface moves the cam follower radially outward, and the second cam surface moves the cam follower radially inward. Furthermore, in this specification, in a “dual-level” cam channel, the first cam surface is at a first height relative to the bottom surface of the cam channel, and the second cam surface is at a second height relative to the cam channel base. Furthermore, in this configuration, the surfaces facing the first cam surface and the surfaces facing the second cam surface do not affect the cam follower and are therefore configured to be away from the cam follower that engages with the first / second cam surfaces. Alternatively, there are no surfaces facing the first cam surface and no surfaces facing the second cam surface. In a "dual-level" cam channel, the properties as a "cam-side channel" remain unchanged even without surfaces facing the first / second cam surfaces. That is, there are two opposing cam surfaces, but these cam surfaces are at different heights. In this specification, "height" of a cam channel is the relative distance to the bottom surface of the cam channel.

[0060] In this specification, “cooperative cam channel” means a plurality of cam channels configured to interact with at least two elongated link members and a plurality of cam followers, such that the interaction between the cam channels, cam followers, and link mechanism causes a portion of the link members to move along a selected, i.e., intended path. In this specification, “a portion of a link member” means, but is not limited to, an identifiable portion such as the end of a link member. Furthermore, in this specification, a “portion of a link member” moving along a selected path is also identified as an “actuating element.” Thus, in this specification, all “cooperative cam channels” essentially have several related “actuating elements.” In this specification, “circular cooperative cam channel” means a “cooperative cam channel” that moves a portion of a link member along a substantially circular path. In this specification, “spiral / circular cooperative cam channel” means a “cooperative cam channel” that moves a portion of a link member along a path that initially moves spirally outward from a starting point to a selected radius, follows a circular path for at least one rotation, and then moves spirally inward back to the starting point. In this specification, "[X] circular cooperative cam channel" or "[X] spiral / circular cooperative cam channel" means a "circular cooperative cam channel" or "spiral / circular cooperative cam channel" that moves a portion of a link member along a path involving approximately [X] circular rotations. It is understood that [X] is a term indicating a number such as "single," "double," or "triple," but is not limited to these. That is, for example, the term "triple spiral / circular cooperative cam channel" means a "cooperative cam channel" that moves a portion of a link member along a path that initially moves spirally outward from the starting point to a selected radius, follows a circular path for approximately 3 rotations, and then moves spirally inward back to the starting point. Therefore, the spiral portion is not counted as one rotation. Furthermore, [X] does not specify the number of "cooperative cam channels." In other words, the term "triple spiral / circular cooperative cam channel" does not mean that there are three "cooperative cam channels."

[0061] In the following description, multiple adjectives and / or noun prefixes are used to describe various elements. For example, the formal name of one element described later is "Base Reformer Unit Roller Die Friction Reduction Device Roller Bearing Assembly 200". In this specification, the full name of an element can be shortened by removing one or more adjectives and / or noun prefixes. Therefore, in this specification, "Base Reformer Unit Roller Die Friction Reduction Device Roller Bearing Assembly 200" may also be identified as "Roller Die Friction Reduction Device Roller Bearing Assembly 200". In other words, the initial noun prefix "Base Reformer Unit" has been removed. This nomenclature applies to all elements identified by adjectives and / or noun prefixes.

[0062] As shown in Figures 1 to 4, the necker machine 10 is configured to reduce the diameter of a portion of the can body 1. In this specification, “necking” means reducing the diameter / radius of a portion of the can body 1. That is, the can body 1 includes a base 2 having an upwardly attached side wall 3. The can body base 2 and the can body side wall 3 define a generally enclosed space 4. In embodiments described later, the can body 1 is substantially circular and / or elongated cylindrical. This is an exemplary shape, and it is understood that the can body 1 may have other shapes. The can body has a longitudinal axis 5. The can body side wall 3 has a first end 6 and a second end 7. The can body base 2 is at the second end 7. The first end 6 of the can body is open. The first end 6 of the can body initially has substantially the same radius / diameter as the can body side wall 3. Following the molding process in the Necker machine 10, the radius / diameter of the first end 6 of the can body is smaller than the radius / diameter of the rest of the can body sidewall 3.

[0063] The Necker machine 10 includes a feeding assembly 11, multiple processing / forming stations 20, a transport assembly 30, and a drive assembly 40. Hereinafter, the processing / forming stations 20 will be identified by the term "processing station 20" and will refer to a general processing station 20. Specific processing stations included in the group known as "processing station 20" will be described later and given a different designation. Each processing station 20 has approximately the same width as all other processing stations 20. Therefore, the length / space occupied by the Necker machine 10 is determined by the number of processing stations 20.

[0064] As is well known, the processing stations 20 are arranged in series adjacent to one another. That is, each can body 1 processed by the Necker machine 10 moves from an upstream location through the series of processing stations 20 in the same order. The can body 1 follows a path (hereinafter referred to as "work path 9"). That is, the Necker machine 10 defines the work path 9 by which the can body 1 moves from an "upstream" location to a "downstream" location, where in this specification, "upstream" generally means close to the Necker machine feed assembly 11 and "downstream" means close to the exit assembly (unrepresented). With respect to the elements that define the work path 9, each of those elements has an "upstream" end and a "downstream end," and the can body moves from the "upstream" end to the "downstream end." Therefore, in this specification, the nature / identification of an element, assembly, sub-assembly, etc., as an "upstream" or "downstream" element or assembly, or as being located in an "upstream" or "downstream" location, is unique. Furthermore, in this specification, the properties / identification of elements, assemblies, subassemblies, etc., as "upstream" or "downstream" elements or assemblies, or as being located in an "upstream" or "downstream" location, are relative terms.

[0065] As described above, each of the processing stations 20 has a similar width, and as the can body 1 moves across the width, the can body 1 is processed and / or formed (or partially formed). Generally, processing / forming is performed in the turret 22. That is, the term “turret 22” refers to a general-purpose turret. As will be described later, each of the processing stations 20 includes a non-vacuum star wheel 24. In this specification, “non-vacuum star wheel” means a star wheel that does not include or is not associated with a vacuum assembly configured to apply vacuum to the star wheel pocket 34 described later. Furthermore, each of the processing stations 20 typically includes one turret 22 and one non-vacuum star wheel 24 or another support for the can body 1. The transport assembly 30 is configured to move the can body 1 between adjacent processing stations 20.

[0066] To achieve this, the Necker machine 10 includes a frame assembly 12 to which a plurality of processing stations 20 are detachably joined. Alternatively, the frame assembly 12 includes elements incorporated into each of the plurality of processing stations 20 such that the plurality of processing stations 20 are configured to be temporarily joined together. The frame assembly 12 has an upstream end 14 and a downstream end 16. Furthermore, the frame assembly 12 includes elongated members, panel members (neither of which are reference numerals), or a combination of both. As is well known, panel members joined together or joined to elongated members form a housing. Thus, in this specification, the housing is also referred to as the “frame assembly 12”.

[0067] The specific features of the processing stations 20 upstream or downstream of the base reformer station 100 are not relevant to this disclosure. It is understood that the transport assembly 30 supplies a series of can bodies 1 to the base reformer station 100 one at a time. The base reformer station 100 is configured to form can body bases 2, and in an exemplary embodiment, can body side walls 3 adjacent to the bases 2 of the can bodies.

[0068] As shown in Figure 5, the base reformer station 100 includes a housing assembly 102, a drive shaft 104, a can body support 106, a can body actuator assembly 108, and a base reformer assembly 110. The base reformer station housing assembly 102 is configured to be coupled, directly coupled, or fixed to the frame assembly 12. That is, the base reformer station housing assembly 102 is a fixed structure that hardly moves relative to the frame assembly 12. The base reformer station drive shaft 104 (also referred to herein as the “drive shaft” 104) is configured to be rotatably coupled to the base reformer station housing assembly 102. Thus, the base reformer station drive shaft 104 is configured to rotate relative to the base reformer station housing assembly 102. In an exemplary embodiment, the base reformer station drive shaft 104 includes an extended, substantially cylindrical body 105. The drive assembly 40 is configured to generate rotational motion in the base reformer station drive shaft 104. The drive assembly 40 is operably coupled to the base reformer station drive shaft 104, causing the base reformer station drive shaft 104 to rotate around its longitudinal axis.

[0069] The base reformer station can body support section 106 is configured to support the can body 1 as it moves through the base reformer station 100. Furthermore, the base reformer station can body support section 106 is configured to receive the can body 1 from the transport assembly 30. That is, the transport assembly 30 transports the can body 1 to the base reformer station can body support section 106 one at a time. In exemplary embodiments, the base reformer station can body support section 106 is a non-vacuum star wheel 24 or a similar structure. The base reformer station can body support section 106 is coupled, directly coupled, or fixed to the base reformer station drive shaft 104 and rotates with it. In exemplary embodiments, the can body 1 is received by the base reformer station can body support section 106 and moves over an arc of approximately 272°. Furthermore, in exemplary embodiments, the base reformer station can body support section 106 is substantially circular and includes pockets for each can body 1.

[0070] The base reformer station can body actuator assembly 108 is configured to move the can body 1 axially on the base reformer station can body support portion 106. That is, the base reformer station can body actuator assembly 108 is configured to move the can body 1 from a first receiving position on the base reformer station can body support portion 106 to a second forming position where each can body 1 is positioned and engages with the base reformer assembly 110 to be formed. It is understood that the base reformer station can body support portion 106 is positioned opposite the support plate 120 of the base reformer assembly, which will be described later. Therefore, in the first position, the can body 1 is positioned away from the support plate 120 of the base reformer assembly, and in the second position, the can body 1 is positioned right next to the support plate 120 of the base reformer assembly.

[0071] As shown in Figures 7 to 10, the base reformer station base reformer assembly 110 (hereinafter referred to as the "base reformer assembly" 110) is configured to form a can body base 2 and, in an exemplary embodiment, a can body side wall 3 adjacent to the can body base 2. The base reformer assembly 110 includes a support plate 120, several base reformer roller die units 130, and a roller die operating assembly 400. In an exemplary embodiment, the support plate 120 of the base reformer assembly is a substantially annular or disc-shaped object 122. The support plate body 122 of the base reformer assembly has a first forming / front surface 124 and a second operating / rear surface 126. Furthermore, the support plate body 122 of the base reformer assembly defines several openings 128, each of which generally corresponds to a base reformer assembly base reformer roller die unit 130. In an exemplary embodiment, the base reformer assembly support plate 120 supports twelve base reformer assembly base reformer roller die units 130. Therefore, in this embodiment, twelve base reformer assembly support plate body openings 128 are provided. The base reformer assembly support plate 120 also defines several unreferenced passages, i.e., mounting passages, to which other elements are connected, such as screw holes, but not limited to these. Furthermore, the base reformer assembly support plate 120 defines several fluid passages, i.e., air passages, which are part of the can body discharge system 500 described later. The base reformer assembly support plate 120 is fixed to the base reformer station drive shaft 104 and rotates with it. That is, in an exemplary embodiment, the base reformer assembly support plate 120 is coupled, directly coupled, or fixed to a roller die operating assembly mounting plate 430 which is fixed to the base reformer station drive shaft 104, as described later. As described above, the support plate 120 of the base reformer assembly is positioned opposite the base reformer station can body support portion 106.In other words, both the base reformer station can body support portion 106 and the support plate 120 of the base reformer assembly are fixed to the base reformer station drive shaft 104, and the first surface 124 of the support plate of the base reformer assembly faces the base reformer station can body support portion 106.

[0072] As shown in Figure 11, each of the base reformer roller die units 130 is substantially the same, so only one will be described herein. The forming elements of the base reformer roller die unit 130, i.e., the elements for forming the can body 1, include a substantially annular housing 131, a substantially circular, i.e., disc-shaped chuck 132, and a roller die 134. As shown in Figure 13, each of the base reformer roller die units 130 further includes a roller die unit actuation assembly 250. Each of the roller die unit actuation assemblies 250 is also considered part of the roller die actuation assembly 400, which will be described below. The base reformer roller die unit 130 further includes a leveling collar 136, a roller die friction reduction device 138, and a retaining collar 140.

[0073] The base reformer roller die unit housing 131 includes a substantially annular body 150. Thus, the base reformer unit housing body 150 defines a substantially circular passage 152. In an exemplary embodiment, the base reformer unit housing body 150 includes a flange 154 extending radially inward on the rear side (the side away from the support plate 120 of the base reformer assembly). Thus, the base reformer unit housing passage 152 at the base reformer unit housing flange 154 has a smaller radius than the rest of the base reformer unit housing passage 152. Furthermore, in this configuration, the inner surface 156 of the base reformer unit housing body 150 defines a substantially enclosed space 158. In an exemplary embodiment, the inner surface 156 of the base reformer unit housing body includes / defines several ledges 160, 162, 164 (three of which are described below) that reduce the radius of the reformer unit housing body passage 152. Note that the rearmost ledge 164 is defined by the base reformer unit housing flange 154. Furthermore, although not described in detail, the inner surface 156 of the base reformer unit housing body defines threaded portions into which selected elements are joined. In addition, the base reformer unit housing body 150 has joining passages (not indicated) located around the outer circumference of the front side of the base reformer unit housing body 150, as shown in the figure. In an exemplary embodiment, fasteners pass through each of the joining passages of the base reformer unit housing body 150 and through the joining portions of the support plate 120 of the base reformer assembly, for example, threaded holes (not shown).

[0074] Each of the base reformer unit chucks 132 (hereinafter referred to as "chucks") also includes a substantially annular body 170. The chuck body 170 defines a forming surface 172 which is the radial inner surface of the chuck body 170. Furthermore, the chuck body 170 includes a collar 174 that extends axially and has screw threads (not indicated) on its outer surface. It is understood that each of the different types of can bodies 1 has an associated base reformer unit chuck 132. That is, the base reformer unit chuck 132 is interchangeable with another base reformer unit chuck 132 depending on the type of can body 1 to be processed.

[0075] Each of the base reformer unit leveling collars 136 also includes a substantially annular body 180. Each of the base reformer unit leveling collar bodies 180 includes a substantially cylindrical portion 182 and a flange 184 extending radially outward. Each of the base reformer unit leveling collar bodies 180 defines a central passage 186. Each of the base reformer unit leveling collar body central passages 186 includes a threaded portion (not indicated). Furthermore, the base reformer unit leveling collar body flange 184 defines several coupling passages (not indicated). The axis of each coupling passage of the base reformer unit leveling collar body flange extends substantially parallel to the axis of the base reformer unit leveling collar body central passage 186.

[0076] Each of the base reformer unit roller die friction reduction devices 138 includes a protective cover assembly 190 and several roller bearing assemblies 200, 201 (two shown). In an exemplary embodiment, each of the base reformer unit roller die friction reduction device protective cover assemblies 190 includes two substantially annular covers 192, 194 and two seals 196, 198. Each of the base reformer unit roller die friction reduction device protective cover assembly covers 192, 194 has a substantially L-shaped cross-section. Each of the base reformer unit roller die friction reduction device protective cover assembly seals 196, 198 is coupled to the associated base reformer unit roller die friction reduction device protective cover assembly cover 192, 194. The two base reformer unit roller die friction reduction device protective cover assembly covers 192, 194 are arranged as mirror images of each other. As will be described later, the two base reformer unit roller die friction reduction device protective cover assembly covers 192 and 194 are spaced apart from each other. In this configuration, the base reformer unit roller die friction reduction device protective cover assembly covers 192 and 194 define a partially enclosed space.

[0077] Each of the base reformer unit roller die friction reduction device roller bearing assemblies 200, 201 includes two opposing races 202, 204 and a number of ball bearings 206. Each of the base reformer unit roller die friction reduction device roller bearing assembly races 202, 204 includes an annular body (unsigned). Each of the two base reformer unit roller die friction reduction device roller bearing assembly races 202, 204 defines the track on which the ball bearings 206 are arranged. The assembly of the base reformer unit roller die friction reduction device 138 will be described later.

[0078] Each of the base reformer unit retaining collars 140 includes a substantially annular body 210. Each of the base reformer unit retaining collar bodies 210 has a substantially L-shaped cross-section and defines a retaining flange 212 extending generally radially inward and a coupling flange 214 extending generally axially. In an exemplary embodiment, the outer surface of each base reformer unit retaining collar coupling flange 214 is threaded and configured to connect to the inner surface 156 of the base reformer unit housing body.

[0079] Each of the base reformer unit roller die 134 includes a substantially annular body 220. Each base reformer unit roller die body 220 has a substantially L-shaped cross-section and defines a flange 222 that extends generally radially and a flange 224 that extends generally axially. The axially extending flange 224 of the base reformer unit roller die body is located on the outer circumference of the radially extending flange 222 of the base reformer unit roller die body. Thus, each of the base reformer unit roller die bodies 220 defines a substantially enclosed space 225. Furthermore, in exemplary embodiments, each of the base reformer unit roller die 134 includes a bearing assembly 226. As shown in the figure, the base reformer unit roller die bearing assembly 226 is a typical ball bearing assembly. Each of the base reformer unit roller die bearing assemblies 226 is located in the enclosed space 225 of the base reformer unit roller die body. Furthermore, in an exemplary embodiment, the radially outer surface of the radially extending flange 222 of the base reformer unit roller die body is the molding surface 228. As shown in the figure, the radially outer surface of the molding surface 228 of the radially extending flange of the base reformer unit roller die body extends radially outward relative to the axially extending flange 224 of the base reformer unit roller die body. Furthermore, each of the base reformer unit roller die bodies 220 defines a recess 230 on its front surface, i.e., on the side facing the base reformer station can body support portion 106. Each of the recesses 230 of the base reformer unit roller die body is positioned around the passage formed by the base reformer unit roller die body 220.

[0080] Each of the base reformer roller die units 130 is assembled as follows: Each of the base reformer unit roller die friction reduction device roller bearing assemblies 200, 201 is positioned on both sides of the base reformer unit leveling collar body flange 184. Next, the base reformer unit roller die friction reduction device protective cover assembly covers 192, 194 are positioned on each of the base reformer unit roller die friction reduction device roller bearing assemblies 200, 201, and the base reformer unit roller die friction reduction device protective cover assembly seals 196, 198 are positioned adjacent to or immediately next to the base reformer unit leveling collar body flange 184. The assemblies of the elements described above are positioned within the enclosed space 158 of the base reformer unit housing body. The axial surface of the innermost cover 194 of the base reformer unit roller die friction reduction device protective cover assembly is positioned relative to the base reformer unit housing body flange 154, with its radially outer surface in contact with the innermost ledge 164 on the inner surface of the base reformer unit housing body. In an exemplary embodiment, the spacer 208 is positioned on the axial surface of the ledge 164 on the inner surface of the base reformer unit housing body prior to the insertion of the elements described above.

[0081] The base reformer unit retaining collar 140 is coupled, directly coupled, or fixed to the base reformer unit housing body 150. In an exemplary embodiment, as described above, the inner surface 156 of the base reformer unit housing body defines a threaded portion, and each outer surface of the base reformer unit retaining collar coupling flange 214 is threaded. The base reformer unit retaining collar 140 encloses the base reformer unit leveling collar 136 and the base reformer unit roller die friction reduction device 138 in the enclosed space 158 of the base reformer unit housing body. Furthermore, in this configuration, the base reformer unit roller die friction reduction device roller bearing assemblies 200, 201 are substantially sealed. That is, the base reformer unit roller die friction reduction device 138 includes a sealed friction reduction element. This solves the above-mentioned problem, that is, the base reformer unit roller die friction reduction device roller bearing assemblies 200, 201 are hardly exposed to the atmosphere. Furthermore, the most likely path for debris to enter the enclosed space, including the base reformer unit roller die friction reduction device roller bearing assemblies 200, 201, is sealed by the engagement of the base reformer unit roller die friction reduction device protective cover assembly seals 196, 198 and the base reformer unit leveling collar body flange 184. In addition, in this configuration, each of the base reformer unit roller die friction reduction devices 138 defines or includes a sealed thrust bearing 139.

[0082] Furthermore, note that the base reformer unit leveling collar body flange 184 has a smaller radial cross-sectional area than the space defined by the base reformer unit retaining collar 140. Thus, each of the base reformer unit leveling collar bodies 180 is configured to move relative to the base reformer unit retaining collar 140. In addition, the base reformer unit roller die friction reduction device roller bearing assemblies 200, 201 positioned on both sides of the base reformer unit leveling collar body flange 184 substantially prevent twisting, i.e., yawing / pitching, of the base reformer unit leveling collar 136 with respect to its central axis 137 (the axis extending through the center of the annular body). Thus, the base reformer unit leveling collar body 180 is configured to move substantially only laterally with respect to its own central axis. That is, the base reformer unit leveling collar body 180 is configured to move only in a plane extending substantially perpendicular to its central axis. Furthermore, any elements coupled, directly coupled, or fixed to the base reformer unit leveling collar body 180 are restricted to motion within parallel planes.

[0083] The base reformer unit chuck 132 is coupled, directly coupled, or fixed to the base reformer roller die unit housing 131. As described above, and in exemplary embodiments, the inner surface 156 of the base reformer unit housing body defines a threaded portion, and the outer surface of the axially extending collar 174 of the chuck body includes a thread. The base reformer unit roller die 134 is positioned within the base reformer unit chuck 132 and coupled to the base reformer unit leveling collar 136. In exemplary embodiments, but not limited to, fasteners such as retaining bolts 135 pass through a central passage defined by various annular elements 131, 150, 170, 180, 210, 220 and coupled to the threaded portion of the central passage 186 of the base reformer unit leveling collar body. The base reformer unit roller die bearing assembly 226 is positioned between the retaining bolts 135 and the base reformer unit roller die body 220. Furthermore, since the base reformer unit roller die 134 is coupled to the base reformer unit leveling collar body 180, the base reformer unit roller die 134 is configured to move only in a plane parallel to a plane that extends substantially perpendicular to the central axis 137 of the base reformer unit leveling collar body. In addition, the molding surface 228 of the radially extending flange of the base reformer unit roller die body is positioned generally opposite the molding surface 172 of the chuck body.

[0084] As described above, each of the base reformer roller die units 130 further includes a roller die unit actuation assembly 250. Each of the roller die unit actuation assemblies 250 is also considered part of a roller die actuation assembly 400. The roller die actuation assembly 400 includes a cam plate 410, a mounting plate 430, and several roller die unit actuation assemblies 250, as shown in Figure 12 and Figure 14. The roller die actuation assembly cam plate 410 (hereinafter referred to herein as "cam plate" 410) includes a substantially planar annular body 412 that defines several cam channels 414. In another exemplary embodiment, the cam plate body 412 is substantially circular or disc-shaped. Furthermore, in the exemplary embodiment, there are two cam channels, a first cam channel 414A and a second cam channel 414B. The two cam channels 414A and 414B are cooperative cam channels. In one embodiment, the two cam channels 414A and 414B are either circular cooperative cam channels or helical / circular cooperative cam channels. Alternatively, the two cam channels 414A and 414B are triple helical / circular cooperative cam channels. In an exemplary embodiment, the first cam channel 414A is a dual-level cam channel including a first cam surface 420 of a first height and a second cam surface 422 of a second height. Similarly, the second cam channel 414B is a dual-level cam channel including a first cam surface 424 of a first height and a second cam surface 426 of a second height.

[0085] Furthermore, each of the two cam channels 414A and 414B is substantially circular and is arranged around the drive shaft 104. That is, the cam plate 410 is coupled, directly coupled, or fixed to the base reformer station housing assembly 102 with the drive shaft 104 extending through the cam plate 410. Furthermore, the cam plate 410 is oriented such that the two cam channels 414A and 414B face the base reformer station can body support portion 106.

[0086] The roller die actuation assembly mounting plate 430 (Figures 9 and 10) (hereinafter referred to herein as the "mounting plate" 430) is configured to pivotably or rotatably support each of the roller die unit actuation assemblies 250. That is, each of the roller die unit actuation assemblies 250 is pivotably or rotatably coupled to the mounting plate 430. The mounting plate 430 is coupled, directly coupled, or fixed to the base reformer station drive shaft 104 and rotates with it. That is, both the base reformer station drive shaft 104 and the mounting plate 430 define axially extending keyways (not indicated), i.e., channels. The mounting plate 430 is fixed to the base reformer station drive shaft 104 by the placement of rigid keys (not indicated) in the two keyways. In an exemplary embodiment, the mounting plate 430 includes a body 432 having a generally flat, annular first member 434, a generally flat, annular second member 436, and a generally flat, annular third member 438. As shown in the figure, the mounting plate body 432 is a single object, and therefore the first member 434, the second member 436, and the third member 438 of the mounting plate body are also recognized as “parts” in this specification.

[0087] In exemplary embodiments, the first and third members 434 and 438 of the mounting plate have substantially the same outer diameter. The radius of the second member 436 of the mounting plate is smaller than that of the first and third members 434 and 438 of the mounting plate. The inner diameter of each of the members 434, 436, and 438 of the mounting plate is approximately or substantially the same as that of the base reformer station drive shaft 104. The second member 436 of the mounting plate is positioned between the first and third members 434 and 438 of the mounting plate. In exemplary embodiments, when assembled, the first member 434 of the mounting plate is configured to be positioned substantially coplanar with the support plate 120 of the base reformer assembly. That is, the first member 434 of the mounting plate is configured to fit into the central opening of the support plate body 122 of the annular base reformer assembly. The third member 438 of the mounting plate is configured to be positioned substantially coplanar with the cam plate body 412. That is, the third member 438 of the mounting plate is configured to fit into the central opening of the annular base reformer assembly cam plate body 412. In an exemplary embodiment, the roller die unit operating assembly 250 is pivotably or rotatably coupled to the third member 438 of the mounting plate.

[0088] The two cam channels 414A and 414B described above are operably coupled to each of the roller die unit actuation assemblies 250. Since each of the roller die unit actuation assemblies is substantially the same, only one will be described herein. Each of the roller die unit actuation assemblies 250 includes a parallel link 252, which is an assembly comprising a proximal first link member 260, a distal second link member 280, a cam follower assembly 300, and several coupling parts / pivot pins (not indicated).

[0089] Each of the first link members 260 includes an elongated body 262 having a first end 264 and a second end 266. Each of the first end 264 and the second end 266 of the first link member body defines a pivot coupling 268, 270. In exemplary embodiments, the pivot couplings 268, 270 of the first and second ends of the first link member body are passages (not indicated) having a substantially circular cross-section. Similarly, each of the second link members 280 includes an elongated body 282 having a first end 284 and a second end 286. Each of the first end 284 and the second end 286 of the second link member body defines a pivot coupling 288, 290. Furthermore, the second end 286 of the second link member body defines several threaded holes (not indicated). In exemplary embodiments, the pivot couplings 268, 270 of the first and second ends of the first link member body are passages (not indicated) having a substantially circular cross-section. Therefore, the first end 264 of the first link member body is configured to be pivotably or rotatably coupled to the mounting plate 430 (or, in an alternative embodiment, the support plate 120 of the base reformer assembly), the second end 266 of the first link member body is configured to be pivotably coupled to the first end 284 of the second link member body (conversely, the first end 284 of the second link member body is configured to be pivotably coupled to the second end 266 of the first link member body), and the second end 286 of the second link member body is configured to be rotatably coupled to the roller die 134.

[0090] The cam follower assembly 300 includes a first cam follower 310 and a second cam follower 320. In an exemplary embodiment, the first cam follower 310 includes a first roller 312 and a second roller 314. In this specification, “roller” of a cam means a wheel or a similar substantially circular / cylindrical structure. Furthermore, the first roller 312 and the second roller 314 of the first cam follower are rotatably arranged on the same axis of rotation. Similarly, the second cam follower 320 includes a first roller 322 and a second roller 324, which are rotatably arranged on the same axis of rotation.

[0091] Each of the roller die unit operating assemblies 250 is assembled as follows: Each of the first link members 260 is rotatably coupled to the mounting plate 430 (or the second side surface 126 of the support plate of the base reformer assembly) adjacent to the central passage of the mounting plate 430. That is, each of the first ends 264 of the first link member body is rotatably coupled to the mounting plate 430. Each of the second ends 266 of the first link member body is pivotally coupled to the first end 284 of the associated second link member body. Each of the first cam followers 310 is rotatably coupled to the first end 284 of the second link member body. It is understood that the axes of rotation of the first roller 312 and the second roller 314 of the first cam follower are the same as the axes of rotation defined by the pivot coupling at the first end 284 of the second link member body. The first roller 322 and the second roller 324 of the second cam follower are rotatably coupled to the second end 286 of the second link member body. The rotation axes of the first roller 322 and the second roller 324 of the second cam follower are substantially parallel to the rotation axes of the first roller 312 and the second roller 314 of the first cam follower.

[0092] The second end 286 of the second link member body is further coupled, directly coupled, or fixed to the base reformer roller die unit 130. That is, (if the base reformer unit roller die 134 is not installed) a fastener (not indicated) is passed through the coupling passage of the base reformer unit leveling collar body flange 184 and through the threaded hole of the second end 286 of the second link member body.

[0093] The roller die actuation assembly 400 is assembled as follows: The support plate 120 of the base reformer assembly (which supports the base reformer roller die unit 130) is positioned on the drive shaft 104. The mounting plate 430 is positioned on the drive shaft 104 and moves axially until each of the base reformer roller die units 130 is positioned in the opening 128 of the support plate body of the base reformer assembly. In this configuration, the first cam follower 310 and the second cam follower 320 are positioned adjacent to the cam plate 410, i.e., on the side facing the roller die unit actuation assembly 250. The support plate 120 and the mounting plate 430 of the base reformer assembly then move axially on the base reformer station drive shaft 104 until the first cam follower 310 and the second cam follower 320 are positioned in the first cam channel 414A and the second cam channel 414B, respectively.

[0094] That is, the support plate 120 and mounting plate 430 of the base reformer assembly move toward the cam plate 410 so that the first cam follower 310 is positioned in the first cam channel 414A and the second cam follower 320 is positioned in the second cam channel 414B. In this configuration, it is understood that the first cam surface 420 of the first cam channel is configured to be operably coupled to the first roller 312 of the first cam follower. Similarly, the second cam surface 422 of the first cam channel is configured to be operably coupled to the second roller 314 of the first cam follower, the first cam surface 424 of the second cam channel is configured to be operably coupled to the first roller 322 of the second cam follower, and the second cam surface 426 of the second cam channel is configured to be operably coupled to the second roller 324 of the second cam follower.

[0095] Therefore, as the support plate 120 and mounting plate 430 of the base reformer assembly rotate together with the drive shaft 104, each of the cam followers 310 and 320 moves through the associated cam channels 414A and 414B, selectively engaging with the associated cam surfaces 420, 422, 424, and 426. That is, selective engagement allows each of the cam followers 310 and 320 to move in a desired pattern. As described above, the two cam channels 414A and 414B are cooperative cam channels. Therefore, selective engagement allows each of the cam followers 310 and 320 and the parallel link 252 to move in a manner that produces a desired movement in the “actuator.” In an exemplary embodiment, the second end 286 of the second link member body is the “actuator” that moves along a desired path. Furthermore, since the roller die 134 is coupled to the second end 286 of the second link member body, the roller die 134 also moves along a selected path. Furthermore, as described above, in one embodiment, the cam channels 414A, 414B are triple helical / circular cooperative cam channels. In this embodiment, each of the roller dies 134 moves along a path that includes two substantially circular forming paths and one substantially circular ironing path. Furthermore, in an exemplary embodiment, the path through which the roller die 134 spirally enters / exits extends along a curve that is between approximately 0° and approximately 90°. In this exemplary embodiment, the roller die 134 first engages with the can body base 2 at approximately 50° and applies full bias / force to form the can body base 2 at 90°. That is, the roller die 134 applies enough bias / force to form the can body base 2 before moving along the 90° arc, but as the roller die 134 moves along the approximately 90° arc, it reaches its full penetration depth, i.e., the roller die 134 is at its maximum radius.

[0096] Illustrative diagrams of the movement of the roller die unit actuation assembly 250 are shown in Figures 15A to 15F. Specifically, Figures 15A to 15F show how the cam channels 414A and 414B move the first link member 260 and the second link member 280 of the roller die unit actuation assembly relative to each other as the support plate 120 and mounting plate 430 of the base reformer assembly rotate together with the drive shaft 104. For clarity, only the mounting plate 430 is shown in Figures 15A to 15F. The longitudinal axis angle of the first link member 260 of the roller die unit actuation assembly is measured with respect to a reference line (RL) that extends approximately or substantially perpendicular to the line extending radially from the drive shaft 104. The longitudinal axis angle of the second link member 280 of the roller die unit actuation assembly is measured with respect to the longitudinal axis of the first link member 260 of the roller die unit actuation assembly. Figure 15A shows the positions of the first link member 260 and the second link member 280 of the roller die unit operating assembly when the can body 1 is positioned on the base reformer roller die unit 130. Figure 15B shows the positions of the first link member 260 and the second link member 280 of the roller die unit operating assembly when the base reformer unit roller die 134 first engages with the can body. Figures 15C to 15F show the positions of the first link member 260 and the second link member 280 of the roller die unit operating assembly as the base reformer unit roller die 134 moves over 90°, 180°, 270°, and 360° of the can body base 2, respectively. As will be described later, although not shown in Figures 15A to 15F, the support plate 120 and mounting plate 430 of the base reformer assembly continue to rotate together with the drive shaft 104, causing the base reformer unit roller die 134 to further shape the can body base 2.

[0097] That is, the can body 1 moves through the necker machine 10, and the transport assembly 30 supplies the can body 1 to the base reformer station 100, more specifically to the can body support section 106. Upon reaching there, the can body 1 is moved by the can body actuator assembly 108, and the can body base 2 is positioned on the base reformer roller die unit 130. That is, the can body base 2 is positioned between the chuck body forming surface 172 and the radially extending flange forming surface 228 of the base reformer unit roller die body.

[0098] As the base reformer station can body support 106 rotates with the drive shaft 104, the roller die actuation assembly 400 acts on the base reformer unit roller die 134. That is, as described above, the moving base reformer station can body support 106 moves the first cam follower 310 and the second cam follower 320 through the stationary cam channels 414A and 414B. This then causes the actuation element, i.e., the second end 286 of the second link member body, to move along the selected path. The base reformer unit roller die 134 is coupled to the second end 286 of the second link member body and moves with it. Therefore, the base reformer unit roller die 134 is also an actuation element and moves along the selected path. In an exemplary embodiment, the cam channels 414A and 414B are triple helical / circular cooperative cam channels. Therefore, the base reformer unit roller die 134 is initially positioned at a starting point located approximately in the center of the dome-shaped can body base 2. That is, at this position, the base reformer unit roller die 134 is positioned approximately away from the base reformer unit chuck 132. When the base reformer unit roller die 134 is operated, the flange forming surface 228 extending radially from the base reformer unit roller die body moves outward in a spiral motion and strikes the radial inner surface of the can body base 2. At the same time, the chuck body forming surface 172 strikes the radial outer surface of the can body base 2. Subsequently, the base reformer unit roller die 134 moves three times in a circular pattern. During the first two rotations of the base reformer unit roller die 134, the base reformer unit roller die 134 forms the can body base 2. In the final rotation, the base reformer unit roller die 134 squeezes the can body base 2. The can body base 2 then moves inward in a spiral motion until the base reformer unit roller die 134 returns to its starting position. At this point, the can body base 2 is reformed, and the can body 1 is passed to the conveyor assembly 30 and moved to another processing station 20.

[0099] Note that in this configuration, each of the roller die unit actuation assemblies 250 is actuated solely by the cam follower assembly 300. Therefore, each of the roller die unit actuation assemblies 250 is a cam-actuated actuation assembly. Furthermore, in this configuration, the cam-actuated actuation assemblies, and consequently each of the base reformer roller die units 130 and each of the base reformer assemblies 110, do not contain gears. Moreover, since the elements of the cam-actuated actuation assemblies, and each of the base reformer roller die units 130 and each of the base reformer assemblies 110 are relatively large compared to, for example, the teeth of a gear, all elements of the roller die unit actuation assembly 250 have a robust cross-sectional area. Thus, the base reformer roller die unit 130 described above solves the aforementioned problems.

[0100] In this configuration, it should be noted that the base reformer unit roller die body 220 has a larger diameter compared to the roller die of prior art. Thus, the base reformer unit roller die body 220 may come into contact with or strike the can body 1 when the can body 1 moves from the base reformer roller die unit 130 to the conveying assembly 30. To overcome this potential problem, the base reformer station 100 further includes a can body discharge system 500, as shown in Figure 14. In an exemplary embodiment, the can body discharge system 500 includes a pressurized fluid supply 502, a conduit assembly 504, and several discharge nozzles 506. The pressurized fluid supply 502 is configured to supply pressurized air or other gas. The pressurized fluid supply 502 is in fluid communication with the conduit assembly 504, and therefore the pressurized gas moves within the conduit assembly 504. Each discharge nozzle 506 is in fluid communication with the conduit assembly 504. Furthermore, in an exemplary embodiment, each of the discharge nozzles 506 is positioned on each of the base reformer unit roller die 134 and / or base reformer assembly base reformer roller die unit 130.

[0101] That is, in an exemplary embodiment, the can body discharge system guide assembly 504 includes a manifold assembly 510. The can body discharge system guide assembly manifold assembly 510 (hereinafter, "manifold assembly" 510) includes a fixed manifold 512 and a rotary manifold 514. The fixed manifold 512 includes a substantially annular body 520 having a substantially rectangular cross-section and several inlet ports 522. The front surface of the fixed manifold body 520 (the surface closest to the base reformer station can body support 106) defines a groove 524 extending across the front axial surface of the fixed manifold body 520. That is, the groove 524 of the fixed manifold body is substantially circular. The rotary manifold 514 also includes a substantially annular body 530 having a substantially rectangular cross-section and several outlet ports 532. The rotary manifold body 530 also includes a groove 534. The rotary manifold body groove 534 is located on the axial rear surface of the rotary manifold body 530 (the surface furthest from the base reformer station can body support 106). The rotary manifold body outlet ports 532 are distributed approximately evenly around the rotary manifold body 530, with one rotary manifold body outlet port 532 for each base reformer assembly base reformer roller die unit 130. Each rotary manifold body outlet port 532 is in fluid communication with the groove 534 of the rotary manifold body. The inner and outer diameters of the stationary manifold body 520 and the rotary manifold body 530 are approximately the same. Furthermore, the radii of the stationary manifold body groove 524 and the rotary manifold body groove 534 are substantially the same.

[0102] The can body discharge system conduit assembly 504 further includes conduits such as hoses 508, but is not limited to these. Furthermore, in this embodiment, the base reformer unit leveling collar 136 and the retaining bolt 135 define passages 186 and passages (not indicated), respectively. In exemplary embodiments, the passage of the base reformer unit leveling collar 136 is a radially extending passage, and the passage of the retaining bolt 135 is an axially extending passage.

[0103] Hose 508 extends between the rotating manifold bodies 530. That is, the rotating manifold bodies 530 are in fluid communication with each hose 508. Each of the hoses 508 is in fluid communication with the base reformer unit leveling collar passage 186. Each of the base reformer unit leveling collar passages 186 is in fluid communication with the passages of the retaining bolts 135. Each passage of the retaining bolts 135 defines a discharge nozzle 506. That is, each passage of the retaining bolts 135 extends through the retaining bolts 135 and is open on its front side.

[0104] The can body discharge system 500 is assembled as follows: The fixed manifold 512 is coupled, directly coupled, or fixed to the base reformer station housing assembly 102 adjacent to the support plate 120 of the base reformer assembly. In an exemplary embodiment, the fixed manifold 512 is coupled, directly coupled, or fixed to the cam plate 410. The rotary manifold 514 is coupled, directly coupled, or fixed to the support plate 120 of the base reformer assembly. Furthermore, the rear surface of the rotary manifold 514 is in contact with the front surface of the fixed manifold 512, and a conduit (unsigned) is formed by aligning the fixed manifold body groove 524 and the rotary manifold body groove 534. As is well known, a seal or similar structure is placed between the fixed manifold 512 and the rotary manifold 514 as needed. The can body discharge system pressurized fluid supply 502 is in fluid communication with the fixed manifold 512 and, more specifically, with the fixed manifold body groove 524 and the conduit defined thereby. The rotary manifold 514 selectively communicates fluid with the stationary manifold 512. That is, the length of the groove 534 in the rotary manifold body is adjustable so that the discharge of the can body 1 matches the timing requirements of the base reformer station 100. As described above, the rotary manifold 514 communicates fluid with each hose 508. Each hose 508 communicates fluid with the associated discharge nozzle 506.

[0105] In this configuration, the pressurized fluid supply 502 is in fluid communication with each discharge nozzle 506. Thus, the can body discharge system 500 supplies positive pressure to each of the can body bases 2 following the molding of the can body bases 2. That is, the can body discharge system 500 assists in the transport of each can body from the base reformer station base reformer assembly 110 to the transport assembly 30. This solves the problems described above.

[0106] While specific embodiments of the invention have been described in detail, it will be understood by those skilled in the art that various modifications and substitutions can be made to those details in light of the overall teachings of this disclosure. Accordingly, the specific configurations disclosed are intended to be illustrative only and not to limit the scope of the invention as given in the entire scope of the appended claims and any and all equivalents thereof.

Claims

1. In a base reformer roller die unit (130) for a base reformer station (100) of a necker machine, A roughly ring-shaped chuck (132), A roller die (134), wherein the roller die (134) is movably disposed within the chuck (132), A roller die unit operating assembly (250) configured to operate the roller die (134), It is equipped with, The roller die unit operating assembly (250) is operably coupled to the roller die (134), All elements of the roller die unit operating assembly (250) have a robust cross-sectional area. The roller die unit operating assembly (250) includes a roller die friction reduction device (138), The friction reduction device (138) is a base reformer roller die unit that includes a sealed friction reduction element.

2. The base reformer roller die unit according to claim 1, wherein the roller die unit operating assembly (250) does not include gears.

3. The base reformer roller die unit according to claim 1, wherein the roller die unit operating assembly (250) is a cam-operated operating assembly.

4. The base reformer roller die unit according to claim 1, wherein the friction reduction device (138) includes a sealed thrust bearing (139).

5. The roller die unit operating assembly (250) includes a parallel link (252), The parallel link (252) includes a proximal first link member (260) and a distal second link member (280), The first link member (260) includes a body (262) having a first end (264) and a second end (266), Each of the first end (264) and the second end (266) of the body of the first link member defines a pivot coupling (268), The second link member (280) includes a body (282) having a first end (284) and a second end (286), Each of the first end (284) and the second end (286) of the body of the second link member defines a pivot coupling (288), The first end (264) of the main body of the first link member is configured to be pivotably connected to the support plate (120) of the base reformer assembly. The second end (266) of the main body of the first link member is configured to be pivotably connected to the first end (284) of the main body of the second link member. The first end (284) of the body of the second link member is configured to be pivotably connected to the second end (266) of the body of the first link member. The base reformer roller die unit according to any one of claims 2 to 4, wherein the second end (286) of the main body of the second link member is configured to be rotatably coupled to the roller die (134).

6. In a base reformer station (100) for a necker machine (10), It is equipped with multiple base reformer roller die units (130), and each base reformer roller die unit (130) is A roughly ring-shaped chuck (132), A roller die (134), wherein the roller die (134) is movably disposed within the chuck (132), A roller die unit operating assembly (250) configured to operate the roller die (134), It is equipped with, The roller die unit operating assembly (250) is operably coupled to the roller die (134), All elements of the roller die unit operating assembly (250) have a robust cross-sectional area. The roller die unit operating assembly (250) includes a roller die friction reduction device (138), The friction reduction device (138) includes a sealed friction reduction element in a base reformer station.

7. The base reformer station according to claim 6, wherein the roller die unit operating assembly (250) does not include gears.

8. The base reformer station according to claim 6, wherein the roller die unit operating assembly (250) is a cam-operated operating assembly.

9. The base reformer station according to claim 6, wherein the friction reduction device (138) includes a sealed thrust bearing (139).

10. The base reformer station according to any one of claims 7 to 9, wherein the roller die unit operating assembly (250) includes a parallel link (252).

11. The parallel link (252) includes a proximal first link member (260) and a distal second link member (280), The first link member (260) includes a body (262) having a first end (264) and a second end (266), Each of the first end (264) and the second end (266) of the body of the first link member defines a pivot coupling (268), The second link member (280) includes a body (282) having a first end (284) and a second end (286), Each of the first end (284) and the second end (286) of the body of the second link member defines a pivot coupling (288), The first end (264) of the main body of the first link member is configured to be pivotably connected to the support plate (120) of the base reformer assembly. The second end (266) of the main body of the first link member is configured to be pivotably connected to the first end (284) of the main body of the second link member. The first end (284) of the body of the second link member is configured to be pivotably connected to the second end (266) of the body of the first link member. The base reformer station according to claim 10, wherein the second end (286) of the main body of the second link member is configured to be rotatably coupled to the roller die (134).

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