Conversion press and pull ring material feeder assembly thereof

Abstract

A tab stock feeder assembly (20) for a press (10) includes a plurality of support elements (22), a plurality of rotating elements (24) and a number of operating elements (26). Each rotating element (24) is rotatably coupled to an associated support element (22). Each operating element (26) is coupled to at least one of the support elements (22) or one of the rotating elements (24), and wherein each operating element (26) is configured to engage with the rotating element (24). The tab stock feeder assembly (20) also includes a wear reduction assembly (30) including a plurality of wear reduction elements (32). The plurality of support elements (22) provides at least one wear reducing element (32) of the wear reducing assembly between the rotating element (24) and the associated support element (22). The invention also relates to a corresponding press.

Description

[0001] This application is a divisional application of the invention patent application with an application date of December 1, 2020, application number 202080085913.1, international application number PCT / US2020 / 062641, and invention name "Conversion press and its pull ring material feeder assembly".

[0002] CROSS-REFERENCE TO RELATED APPLICATIONS

[0003] This application claims priority to U.S. patent application serial number 16 / 711,585, filed on December 12, 2019, entitled “CONVERSION PRESS AND TAB STOCK FEEDER ASSEMBLY THEREFOR.” Technical Field

[0004] The disclosed approach relates to a tab feeder assembly for a press, such as a converting press, and more particularly to a tab feeder assembly including a wear reduction assembly. Background Art

[0005] As is well known, metal containers such as, but not limited to, beverage cans and beer cans include a can end having a tear-off panel and a pull ring (i.e., a tab). Specifically, the pull ring is pivotally coupled to the can end adjacent to the tear-off panel. To open the container, a user lifts one end of the pull ring, engaging the opposite end with the tear-off panel. The biasing of the pull ring partially separates the tear-off panel from the remainder of the can end, thereby forming an opening in the can end.

[0006] The tab is formed in a tab press or, more typically, a converting press. A converting press is a press configured to form both the can end and the tab. Regardless of the type of press used, the tab is formed from a sheet or wire of metal, such as, but not limited to, aluminum. As used herein, the material in the sheet or wire is "tab stock." That is, the tab stock is moved by a tab feeder into the forming element of the press, where the metal is formed into the tab, cut from the sheet / wire, and attached to the can end (which is also formed from a different sheet / wire of metal, or from a preformed shell). As is well known, this forming / cutting / attaching is accomplished by a press having an upper (or first) tool and a lower (or second) tool. Each tool has various forming structures coupled thereto that are configured to form the metal. Typically, each pair of opposing forming structures is considered a "station." Each forming station is configured to partially form the tab and / or can end. That is, the material advances through the tools, and at each station, a portion of the tab / can end is formed. Typically, the tab is separated from the tab stock only when it is attached to the can end. As the can end separates from the sheet / wire from which it is formed, a conveyor, such as, but not limited to, a conveyor belt, moves the can end. When the can end, along with the tab attached thereto, reaches the rear end of the tool, the can end is substantially complete. The formation of the tab, without reference to the can end, will be described in further detail below.

[0007] That is, the tab is formed as the upper tool reciprocates between a first position (where the upper tool is spaced apart from the lower tool) and a second position (where the upper tool is adjacent to the lower tool) in which the tab is formed. It will be appreciated that when the upper tool is in the second position, structural engagement is achieved and the tab stock is formed. Furthermore, as is well known, when the upper tool is in the first position, the tab stock is advanced such that the tab is gradually formed by the station.

[0008] The tab stock feeder is a structure that advances the tab stock. It will be appreciated that the tab stock feeder is configured to move the tab stock when the upper tool is not in the second position. Specifically, when the upper tool is in the second position, the tab stock cannot advance because the forming structure is engaging the tab stock. Therefore, the tab stock feeder is configured to advance the tab stock when the upper tool is not in the second position and to disengage the tab stock when the upper tool is in the second position.

[0009] In a common embodiment, a tab feeder includes a drive wheel, a base, a lifting member, and a biasing roller. A motor or similar structure is operably coupled to the drive wheel to rotate the drive wheel. The lifting member is pivotally coupled to the base and is configured to move between a first position in which the lifting member is substantially adjacent to the base and a second position in which the lifting member is substantially spaced apart from the base by a reciprocating pivoting motion. In an exemplary embodiment, a rotating cam member coupled to the base moves the lifting member between the first position and the second position. The biasing roller is coupled to the lifting member and moves therewith. The biasing roller is typically positioned above the drive wheel. The tab feeder is disposed between the drive wheel and the biasing roller.

[0010] In this configuration, the biasing roller moves between a first position in which the biasing roller engages the tab material and biases it against the drive wheel, and a second position in which the biasing roller is spaced apart from the tab material. It will be appreciated that when the tab material is biased against the drive wheel, the drive wheel advances the tab material. Conversely, when the biasing roller is in the second position, the tab material is not operatively engaged with the drive wheel and does not advance. It will also be appreciated that when the upper tool is also in its first position (or moving toward or away from its first position), the lifting member / biasing roller is in the first position, and when the upper tool is in its second position, the lifting member / biasing roller is in the second position. Therefore, as described above, when the upper tool is in its second position and forming material, the tab material is stationary. When the upper tool is separated from the lower tool, i.e., when the upper tool is in its first position (or moving toward or away from its first position), the tab material is in motion.

[0011] However, tab feeders have several common issues related to wear and tear. Specifically, although the moving elements are separated from bearings and similar structures, the reciprocating motion causes wear in specific locations on certain components of the tab feeder. For example, the lifting member is typically connected to the base via a hinge assembly that includes an integrated hinge sleeve and hinge pin. In other words, the lifting member is pivotally connected to the base via the hinge pin. As the lifting member reciprocates between a first position and a second position, the hinge sleeve and hinge pin each experience wear in specific locations. Specifically, in a typical configuration, the hinge sleeve is located at each end of the hinge pin. Therefore, the hinge sleeve engages the hinge pin only at the ends of the hinge pin. Furthermore, because the integrated hinge sleeve and hinge pin are not perfectly cylindrical, the engagement between each hinge sleeve and hinge pin occurs at specific locations. Because the lifting member causes the hinge sleeve to pivot, the hinge pin wears in these specific locations. Therefore, while the hinge sleeve / pin remains largely wear-free, extensive wear occurs in these specific locations. This is a problem.

[0012] Furthermore, the biasing roller is configured to assist in advancing the tab stock in a forward direction. The biasing roller is mounted on an annular bearing assembly, i.e., an assembly having a circular inner race, a circular outer race, and a bearing (e.g., a ball bearing or roller bearing) therebetween, which is disposed in or parallel to the plane of rotation of the biasing roller. The annular bearing assembly is configured to, and does, ameliorate forces in the plane of rotation of the annular bearing assembly. For example, forces applied to the outer race in the plane of rotation of the annular bearing assembly (and in addition to forces applied in a radial direction) cause the outer race to rotate relative to the inner race; thus, the forces applied to the annular bearing assembly, and therefore the biasing roller, are ameliorated.

[0013] The bias roller and annular bearing assembly are further subject to forces applied in directions other than the annular bearing assembly's plane of rotation. Roller bearings and the bias roller do not mitigate these forces, and the components supporting the bias roller are subject to wear. Specifically, using a Cartesian coordinate system and as used herein, the bias roller is configured to rotate about an "X-axis." That is, the "X-axis" is an axis extending along the bias roller's axis of rotation. As used herein, movement about this axis is "rolling." As used herein, the "Y-axis" extends in the direction of the tab stock's movement. As used herein, movement about the "Y-axis" is "pitching," and movement about the "Z-axis" is "swaying." Although the bias roller (and annular bearing assembly) are configured to "roll," i.e., rotate about the X-axis, the bias roller is further subject to forces that can cause the bias roller to pitch or sway. Because the annular bearing assembly is not configured to accommodate forces in these directions, these forces result in "wear caused by forces applied to the rotating element in planes other than the rotating element's plane of rotation," as that term is defined below. This presents a problem. Additionally, it is desirable for the bias roller to rotate at least slightly about the Y axis to allow the bias roller to evenly engage the tab stock.The annular bearing assembly does not allow for rotation about the Y axis and is therefore a problem.

[0014] Therefore, there is a need for a tab feeder assembly for a press that includes a wear reduction assembly configured to reduce wear on a rotating element and / or an element supporting the rotating element. There is also a need for a tab feeder assembly for a press that includes a wear reduction assembly configured to reduce wear on a rotating element and / or an element supporting the rotating element. There is also a need for a tab feeder assembly for a press that includes a wear reduction assembly disposed between the rotating element and an associated support element. Summary of the Invention

[0015] These needs and other needs are met by at least one embodiment of the disclosed solution, which provides a tab feeder assembly for a press, the tab feeder assembly comprising a plurality of support elements, a plurality of rotating elements, and a number of operating elements. Each rotating element is rotatably coupled to an associated support element. Each operating element is coupled to at least one of the support elements or to one of the rotating elements, and each operating element is configured to engage with the rotating element. The tab feeder assembly also includes a wear reduction assembly comprising a plurality of wear reducing elements. The plurality of support elements enables at least one wear reducing element of the wear reduction assembly to be disposed between the rotating element and the associated support element.

[0016] Also disclosed is a press, such as a converting press, employing the above-described pull-tab material feeder assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] A full understanding of the disclosed aspects can be gained from the following description of the preferred embodiments when read in conjunction with the accompanying drawings, in which:

[0018] Figure 1 is a side view of a converting press employing a tab feeder assembly according to an embodiment of the disclosed solution;

[0019] Figure 2 yes Figure 1 an isometric view of a tab feeder assembly;

[0020] Figure 3 yes Figure 2 an isometric view of a portion of a tab feeder assembly;

[0021] Figure 4 yes Figure 3 a top view of the portion of the pull tab feeder assembly;

[0022] Figure 5 It is along Figure 4 a sectional isometric view taken along line 5-5;

[0023] Figure 6 It is along Figure 4 a sectional isometric view taken along line 6-6 of FIG.

[0024] Figure 7 yes Figure 5 An enlarged view of a portion of . DETAILED DESCRIPTION

[0025] It will be understood that the specific elements illustrated in the drawings herein and described in the following specification are merely exemplary embodiments of the disclosed solutions, which are provided as non-limiting examples for illustrative purposes only. Therefore, specific dimensions, orientations, assemblies, number of components used, embodiment configurations, and other physical characteristics related to the embodiments disclosed herein should not be construed as limiting the scope of the disclosed solutions.

[0026] Directional phrases used herein (eg, clockwise, counterclockwise, left, right, top, bottom, upward, downward, and their derivatives) relate to the orientation of elements shown in the drawings and do not limit the claims unless explicitly recited therein.

[0027] As used herein, the singular form "a," "an," and "the" include plural references unless the context clearly dictates otherwise.

[0028] As used herein, "configured to [verb]" means that the identified element or component has a structure that is shaped, sized, arranged, coupled, and / or configured to perform the identified verb. For example, a component that is "configured to move" is movably coupled to another element and includes an element that causes the component to move, or the component is otherwise configured to move in response to the other element or component. Thus, as used herein, "configured to [verb]" states structure rather than function. Furthermore, as used herein, "configured to [verb]" means that the identified element or component is intended and designed to perform the identified verb. Thus, an element that is only capable of performing the identified verb but is not intended or designed to perform the identified verb is not "configured to [verb]."

[0029] As used herein, in terms such as, but not limited to, "[X] configured to [verb] [Y]," "[Y]" is not an element being stated. Rather, "[Y]" further qualifies the structure of "[X]." That is, assume in the following two examples that "[X]" is a "stand" and [verb] is "support." In the first example, the complete term is "stand configured to support a bird in flight." That is, in this example, "[Y]" is "a bird in flight." As is well known, birds in flight typically cling to branches for support, as opposed to birds that swim / walk. Therefore, for a stand to be "configured" for supporting a bird in flight, i.e., "[X]," the stand is shaped and sized to resemble a branch that a bird in flight can grasp. However, this does not imply that a bird in flight is being stated. In the second example, "[Y]" is a house; that is, the second exemplary term is "stand configured to support a house." In this example, the stand is structured as a foundation, as it is well known that a house is supported by a foundation. As before, the house is not being stated, but rather the shape, size, and configuration of the bracket are being defined, that is, the shape, size, and configuration of the "[X]" in the term "[X] constructed into [verb] [Y]."

[0030] As used herein, "associated" means that elements are part of the same assembly and / or operate together, or act on / interact with each other in some manner. For example, a car has four tires and four hubcaps. While all elements are connected as part of the car, it is understood that each hubcap is "associated" with a specific tire.

[0031] As used herein, a "coupling assembly" includes two or more couplings or coupling components. A coupling or components of a coupling assembly are generally not part of the same element or other component. Therefore, components of a "coupling assembly" may not be described together in the following description.

[0032] As used herein, a "coupler" or "coupling component" is one or more components of a coupling assembly. That is, a coupling assembly includes at least two components that are configured to couple together. It is understood that the components of a coupling assembly are compatible with one another. For example, in a coupling assembly, if one coupling component is a card socket, the other coupling component may be a card plug, or if one coupling component is a bolt, the other coupling component may include a nut (and an opening through which the bolt extends) or a threaded hole.

[0033] As used herein, a "fastener" is a separate component that is configured to connect two or more elements. Thus, for example, a bolt is a "fastener," but a tongue-and-groove joint is not a "fastener." That is, each tongue-and-groove element is part of the elements being connected, rather than a separate component.

[0034] As used herein, a statement that two or more parts or components are "coupled" shall mean that the parts are combined or operated together directly or indirectly, i.e., through one or more intermediate parts or components, as long as there is a link. As used herein, "directly coupled" means that two elements are in direct contact with each other. As used herein, "fixedly coupled" or "fixed" means that two components are coupled so as to move as a whole while maintaining a constant orientation relative to each other. Therefore, when two elements are coupled, all parts of these elements are coupled. However, a description that a specific part of a first element is coupled to a second element (e.g., the first end of an axle is coupled to a first wheel) means that the specific part of the first element is arranged closer to the second element than other parts of it. In addition, an object placed on another object that is held in place only by gravity is not "coupled" to the lower object unless the upper object is substantially held in place in other ways. That is, for example, a book on a table is not coupled to it, but a book glued to the table is coupled to it.

[0035] As used herein, the phrases "removably coupled" or "temporarily coupled" refer to one component being coupled to another component in a substantially temporary manner. That is, the two components are coupled in such a manner that the joining or separation of the components is easy and does not damage the components. For example, two components that are secured to one another using a limited number of easily accessible fasteners (i.e., fasteners that are not difficult to access) are "removably coupled," whereas two components that are welded together or joined by inaccessible fasteners are not "removably coupled." An "inaccessible fastener" is a fastener that requires the removal of one or more other components before access to the fastener is possible, where the "other components" are not access devices, such as, but not limited to, a door.

[0036] As used herein, "operably coupled" means that a number of elements or components, each of which is movable between a first position and a second position or between a first configuration and a second configuration, are coupled such that when the first element moves from one position / configuration to another, the second element also moves between the positions / configurations. It is noted that a first element can be "operably coupled" to another element, but not vice versa. With respect to electronic devices, a first electronic device is "operably coupled" to a second electronic device when the first electronic device is configured to and does send a signal or current to the second electronic device to cause the second electronic device to actuate or otherwise become energized or activated.

[0037] As used herein, "temporarily disposed" means that a first element or component is positioned on a second element or component in a manner that allows the first element / component to be moved without having to decouple or otherwise manipulate the first element. For example, a book that is merely positioned on a table (i.e., the book is not glued or otherwise fastened to the table) is "temporarily disposed" on the table.

[0038] As used herein, a statement that two or more parts or components "engage" one another means that the elements exert a force or bias against one another, either directly or through one or more intermediate elements or components. Furthermore, as used herein with respect to a moving part, a moving part may "engage" another element during movement from one position to another and / or may "engage" another element once in said position. Thus, it will be understood that the statements "element A engages element B when element A moves to element A's first position" and "element A engages element B when element A is in element A's first position" are equivalent statements and mean that element A engages element B when moving to element A's first position and / or element A engages element B when in element A's first position.

[0039] As used herein, "operably engaged" means "engagement and movement." That is, "operably engaged," when used in connection with a first component that is configured to move a movable or rotatable second component, means that the first component applies a force sufficient to move the second component. For example, a screwdriver may be placed in contact with a screw. When no force is applied to the screwdriver, the screwdriver is only "temporarily coupled" to the screw. If an axial force is applied to the screwdriver, the screwdriver presses against the screw and "engages" the screw. However, when a rotational force is applied to the screwdriver, the screwdriver "operably engages" the screw and causes the screw to rotate. Furthermore, with respect to electronic components, "operably engaged" means that one component controls another component via a control signal or current.

[0040] As used herein, in the phrase “[x] moves between its first position and its second position” or “[y] is configured to move [x] between its first position and its second position,” “[x]” is the name of an element or component. Furthermore, when [x] is an element or component that moves between a certain number of positions, the pronoun “its” refers to “[x],” that is, the element or component named before the pronoun “its.”

[0041] As used herein, "corresponding" means that two structural components are sized and shaped to be similar to each other and can be coupled with minimal friction. Thus, an opening that "corresponds" to a component is sized slightly larger than the component so that the component can pass through the opening with minimal friction. This definition is modified if the two components are to fit together "tightly." In this case, the difference between the component dimensions is even smaller, thereby increasing the friction. If the element defining the opening and / or the component inserted into the opening are made of a deformable or compressible material, the opening can even 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 approximately the same size, shape, and contour. With respect to movable or configurable elements / components, "corresponding" means that when the elements / components are related, and when one element / component moves / reconfigures, the other element / component also moves / reconfigures in a predetermined manner. For example, a lever comprising a central fulcrum and an elongated plate, such as a "seesaw" or "push-totter," has a first end and a second end. When the first end of the plate is in a raised position, the second end of the plate is in a lowered position. When the first end of the plate moves to the lowered position, the second end of the plate moves to a "corresponding" raised position. Alternatively, a camshaft in the engine has a first lobe operatively coupled to the first piston. When the first lobe moves to its upward position, the first piston moves to a "corresponding" upward position, and when the first lobe moves to the downward position, the first piston moves to a "corresponding" downward position.

[0042] As used herein, "path of travel" or "path," when used in connection with a moving element, includes the space through which the element moves when in motion. Thus, any moving element inherently has a "path of travel" or "path." Furthermore, a "path of travel" or "path" relates to the movement of an identifiable structure as a whole relative to another object. For example, assuming a perfectly smooth road, a rotating wheel on a car (an identifiable structure) generally does not move relative to the body of the car (another object). That is, the wheel as a whole does not change its position relative to, for example, an adjacent fender. Thus, a rotating wheel does not have a "path of travel" or "path" relative to the body of the car. In contrast, an intake valve on that wheel (an identifiable structure) does have a "path of travel" or "path" relative to the body of the car. That is, when the wheel rotates and is in motion, the intake valve as a whole moves relative to the body of the car.

[0043] As used herein, a "planar body" or "planar member" is a generally thin element that includes opposing, broad, generally parallel surfaces, i.e., the planar surfaces of the planar member and a relatively thin edge surface extending between the broad, parallel surfaces. That is, as used herein, a "planar" element inherently has two opposing planar surfaces with an edge surface extending therebetween. The perimeter, and therefore the edge surface, may include a generally straight portion (e.g., as on a rectangular planar member such as a credit card), or be curved (as on a circular disk such as a coin), or have any other shape.

[0044] As used herein, the term "monolithic" refers to a component that is created as a single piece or unit. That is, an assembly that includes pieces that are created separately and then coupled together as a unit is not a "monolithic" component or body.

[0045] As used herein, "single-piece" means that all elements of an assembly are provided in a single location and / or within a single housing, frame, or similar structure.

[0046] As used herein, the term "number" shall mean one or an integer greater than one (i.e., a plurality). That is, for example, the phrase "a certain number of elements" shall mean one element or a plurality of elements. It is particularly noted that the term "a certain 'number' of [X]" includes a single [X].

[0047] As used herein, a "radial side / surface" of a circular or cylindrical body is a side / surface that extends around or around its center or along a line of elevation that passes through its center. As used herein, an "axial side / surface" of a circular or cylindrical body is a side that extends in a plane that extends approximately perpendicular to a line of elevation that passes through the center. That is, typically, for a cylindrical soup can, the "radial side / surface" is the generally circular sidewall, and the "axial side / surface" is the top and bottom of the soup can. Furthermore, as used herein, "radially extending" means extending in a radial direction or along a radial line. That is, for example, a "radially extending" line extends from the center of a circle or cylinder toward a radial side / surface. Furthermore, as used herein, "axially extending" means extending in an axial direction or along an axial line. That is, for example, an "axially extending" line extends from the bottom of a cylinder to the top of the cylinder and is substantially parallel to or along the central longitudinal axis of the cylinder.

[0048] As used herein, a "tension member" is a structure that has a maximum length when under tension but is otherwise substantially flexible, such as, but not limited to, a chain or cable.

[0049] As used herein, "substantially curvilinear" includes elements having multiple curved portions, a combination of curved and planar portions, and multiple straight / planar portions or segments that are angled relative to each other to form a curve.

[0050] As used herein, an "elongated" element inherently comprises a longitudinal axis and / or longitudinal line extending in the direction of elongation.

[0051] As used herein, "around" in phrases such as "disposed around [element, point, or axis]," "extending around [element, point, or axis]," or "[x] degrees around [element, point, or axis]" means surrounding, extending around, or measuring around. As will be understood by one of ordinary skill in the art, "about," when used with reference to a measurement or in a similar manner, means "approximately," i.e., within an approximate range to which the measurement relates.

[0052] As used herein, "generally" means "in a general manner" with respect to the term being modified, as would be understood by one of ordinary skill in the art.

[0053] As used herein, "significantly" means "in a substantial amount or to a large extent" with respect to the modified term, as would be understood by one of ordinary skill in the art.

[0054] As used herein, "at" means on and / or near the modified term, as would be understood by one of ordinary skill in the art.

[0055] As used herein, a "wear reduction assembly" refers to an assembly that includes multiple "wear reducing elements." Furthermore, to qualify as a "wear reduction assembly," the "wear reducing elements" must all be associated with a mechanical device / component, or a number of related devices / components, that has an identifiable mechanical purpose. For example, in an automobile, components of the drivetrain, such as the engine, transmission, and axles, have an identifiable mechanical purpose of imparting motion to the vehicle. Therefore, generally speaking, a "wear reducing element" associated with the automobile's drivetrain would qualify as a "wear reduction assembly." Conversely, a "wear reducing element" that is part of an automobile's drivetrain and a "wear reducing element" that is part of an automobile's air conditioner would not qualify as a "wear reduction assembly" because the automobile drivetrain and the automobile air conditioner do not have the same "identifiable mechanical purpose." That is, as used herein, an "identifiable mechanical purpose" refers to a purpose related to the operation of a mechanical device / component. Thus, in the above example, the purpose of the automobile drivetrain is to provide motion to the vehicle, while the purpose of the automobile air conditioner is to provide passenger comfort. Furthermore, a purpose such as, but not limited to, "providing a comfortable ride for passengers" is not an "identifiable mechanical purpose" because a mechanical element cannot be "comfortable."

[0056] Furthermore, as used herein, to qualify as a “wear reduction assembly,” the assembly must include different types of “wear reducing elements.” That is, an assembly that includes only bearings (which includes assemblies with different types of bearings) cannot be a “wear reduction assembly” because all of the “wear reducing elements” are of the same type.

[0057] As used herein, a "wear reducing element" refers to an element / component configured to significantly reduce wear in a specific location on another element and / or reduce wear resulting from forces in non-primary directions associated with movement in a primary direction.

[0058] As used herein, "at a specific location" refers to a localized area. For example, an elongated, generally circular rod appears circular when viewed in cross-section. If another element rubs against the rod at the "one o'clock" position and only at one end of the rod, the wear is "at a specific location." If the other element engages the rod 360° at one end, the wear is not "at a specific location." Similarly, if the other element engages the rod at the "one o'clock" position across its longitudinal length, the wear is not "at a specific location." Therefore, "at a specific location" means in a small, discrete area relative to the total surface area of the engaged elements, as will be understood by those skilled in the art.

[0059] Furthermore, as used herein, “wear caused by forces applied to the element in a plane other than the plane of rotation of the rotating element” refers to wear on the element caused by forces applied not approximately in the plane of rotation of the rotating element (or an element supporting the rotating element) or in a plane substantially parallel to the plane of rotation of the element. As used herein, the “plane of rotation” of the rotating element is a plane substantially perpendicular to the axis of rotation of the rotating element. Furthermore, as used herein, the annular bearing assembly does not “wear caused by forces applied to the element in a plane other than the plane of rotation of the rotating element”, and therefore, the annular bearing assembly cannot be a “wear-reducing element” as defined above. In contrast, and as used herein, the spherical bearings arranged around such a cylindrical member improve forces applied in any direction. Therefore, the spherical bearings are configured to and do “wear caused by forces applied to the element in a plane other than the plane of rotation of the rotating element”. Therefore, as used herein, the spherical bearings are “wear-reducing elements”.

[0060] Figure 1 A press such as, for example, but not limited to, a converting press 10 is shown in FIG. As is well known, the converting press 10 is configured to form can ends (not shown). That is, the converting press 10 includes an upper tool 12 (shown in simplified form in the dotted line drawing) and a lower tool 14 (shown in simplified form in the dotted line drawing), each of which supports a certain number of forming structures (not numbered). The upper tool 12 reciprocates between a first position in which the upper tool 12 is spaced apart from the lower tool 14 and a second position in which the upper tool 12 is adjacent to the lower tool 14 and forming is performed. That is, the converting press 10 is configured to form metal when in the second position. The feedstock, i.e., metal from sheet or wire (e.g., see Figure 2The ring pull stock 200, partially shown in simplified form in FIG. 1 , is passed through the conversion press 10 and formed into a can end. That is, the can end stock (or shell in some embodiments) is formed into the disc-shaped body of the can end. The ring pull stock 200 is formed into a ring pull for a can end (e.g., see FIG. Figure 2 2. FIG. 2 shows a pull ring 202 partially formed in simplified form on a pull ring stock material 200. In an exemplary embodiment, the can end stock and the pull ring stock 200 are moved generally perpendicular to each other. The pull ring 202 is coupled to the disc-shaped body of the can end near the end of the forming process.

[0061] The tab stock feeder assembly 20 moves tab stock 200 (hereinafter referred to as "tab stock"). That is, the tab stock feeder assembly 20 is configured to move the tab stock 200 through the converting press 10. As described above, when the upper tool 12 is in the second position, i.e., when the tab stock 200 ( Figure 2 ), the tab stock 200 does not move. Therefore, the tab stock feeder assembly 20 is configured to index the tab stock 200 through the converting press 10, that is, to intermittently move the tab stock through the converting press.

[0062] exist Figures 2 to 7 . The pull ring material feeder assembly 20 is shown in more detail in . In an exemplary embodiment, the pull ring material feeder assembly 20 includes a plurality of support elements 22, a plurality of rotating elements 24 and a certain number of operating elements 26. As used herein, a "support element" is an element that supports a "rotating element". As used herein, a "rotating element" is an element that rotates or pivots (including reciprocating pivoting motion), and its. A "rotating element" is capable of supporting another element, and therefore, a single element can be both a "support element" and a "rotating element". As used herein, an "operating element" is an element that is operably engaged or operably engaged with another element. Each rotating element 24 is rotatably coupled to an associated support element 22. That is, as used herein, the support element 22 to which the rotating element 24 is most closely coupled (i.e., with the fewest intermediate elements) is the "associated support element" 22. Each operating element 26 is coupled to at least one support element 22 or one rotating element 24 and is configured to engage with the rotating element 24. The tab feeder assembly 20 further includes a wear reduction assembly 30 comprising a plurality of wear reducing elements 32. The plurality of support elements 22 allows at least one wear reducing element 32 of the wear reduction assembly to be disposed between the rotating element 24 and the associated support element 22.

[0063] In the exemplary non-limiting embodiment, the tab feeder assembly 20 and / or the plurality of support elements 22 include a base 40 and a lifting member assembly 42. The base 40 itself may be movable (e.g., pivotable) and / or may include or comprise one or more moving elements (e.g., but not limited to, a drive wheel 28; a rotating shaft 74). The tab feeder assembly 20 and / or the plurality of rotating elements 24 include a lifting member assembly 42 and a cam member 44 (in Figure 3 ). A number of the operating elements 26 include cam followers 46. The base 40 includes a generally planar upper surface 50, while the lifting member assembly 42 includes an opposing generally planar lower surface 60. Figure 6 As shown in the cross-sectional view of FIG, the base 40 defines a plurality of articulation sleeves 52. The lifting member assembly 42 defines a plurality of articulation sleeves 62. The lifting member assembly 42 also includes a generally cylindrical articulation pin 64. In another illustrative, non-limiting example, the lifting member assembly articulation pin 64 is considered to be part of the base 40. The lifting member assembly 42 is rotatably, i.e., pivotally, coupled to the base 40 via the lifting member assembly articulation pin 64. That is, the lifting member assembly articulation pin 64 is disposed in both the plurality of base articulation sleeves 52 and the plurality of lifting member assembly articulation sleeves 62.

[0064] refer to Figure 3 , in an exemplary, non-limiting embodiment, the cam member 44 is an eccentric cam, i.e., a generally circular body 70 having a coupling 72, i.e., a channel offset from the center of the circular body 70. The cam member 44 is coupled, directly coupled, or fixed to a rotational shaft 74. The rotational shaft 74 extends through the base 40 or is otherwise disposed adjacent the base, opposite the plurality of articulated sleeves 52 of the base. A drive assembly (not shown) of the conversion press operably engages and rotates the rotational shaft 74. The cam follower 46, shown as a wheel 76, is coupled or rotatably coupled to the lift member assembly 42 opposite the cam member 44, i.e., in a position in which the cam follower 46 is structured to and operably engage with the cam member 44.

[0065] In this configuration, the lifting member assembly 42 is configured to and does pivotally reciprocate between a first position in which the lifting member assembly 42 is generally adjacent to the base 40 and a second position in which the lifting member assembly 42 is generally spaced apart from the base 40. That is, in the first position, the lower surface 60 of the lifting member assembly is generally parallel to and proximate to the upper surface 50 of the base. In the second position, the lower surface 60 of the lifting member assembly is generally angled relative to the upper surface 50 of the base; thus, a space exists between the lower surface 60 of the lifting member assembly and the upper surface 50 of the base. It will be appreciated that when the cam member 44 rotates and engages the cam follower 46, the lifting member assembly 42 pivotally reciprocates between the first and second positions. In the exemplary, non-limiting embodiment, the lifting member assembly 42 preferably pivots over an arc between 0 and 10 degrees, and more preferably, less than 1 degree. It will be appreciated that reducing the amount of relative motion in the manner described above has the advantage of reducing the amount of lift, thereby reducing the associated amount of force required and, in turn, resulting in a longer service life for all associated components.

[0066] like Figures 2 to 7 As shown, the tab feeder assembly 20 also includes a drive wheel 28. The drive wheel 28 of the tab feeder assembly is operably engaged with a drive assembly (not shown) of the conversion press and rotates relative to the base 40. The axis of rotation of the drive wheel 28 of the tab feeder assembly extends generally parallel to the axis of rotation of the hinge pin 64 of the lifting member assembly. In the embodiment shown, the drive wheel 28 of the tab feeder assembly is disposed below the height of the lifting member assembly 42.

[0067] In addition, the plurality of support elements 22 include a support arm 80, and the plurality of rotating elements 24 include a biasing roller assembly 90. The support arm 80 is coupled, directly coupled, or fixed to the lifting member assembly 42 and moves therewith. That is, the support arm 80 includes an elongated body 82 having a first end 83 and a second end 84 (at Figure 7 ). The first end 83 of the support arm body is coupled, directly coupled, or otherwise secured to the lift member assembly 42. In the exemplary embodiment, the lift member assembly 42 includes a support arm bracket 86 that extends from the remainder of the lift member assembly 42. The first end 83 of the support arm body is coupled, directly coupled, or otherwise secured to the support arm bracket 86. Additionally, the second end 84 of the support arm body defines a bracket channel 88. The second end 84 of the support arm body includes the bracket channel 88, which extends generally parallel to the axis of rotation of the hinge pin 64 of the lift member assembly.

[0068] like Figure 7As best shown, the biasing roller assembly 90 is disposed at the second end 84 of the support arm body. The biasing roller assembly 90 includes a first roller 92, a shaft 94, and a second roller 96. In the exemplary embodiment, the shaft 94 of the biasing roller assembly is divided into two parts, and the halves are structured and coupled to each other to form the shaft 94 of the biasing roller assembly. That is, in the exemplary embodiment, the biasing roller assembly 90 includes a first component 100 (the first component including the first roller 92 and the first half 93 of the shaft as a single body) and a second component 102 (the second component including the second roller 96 and the second half 95 of the shaft as a single body). The first component 100 and the second component 102 of the biasing roller assembly are coupled to form the biasing roller assembly 90. Furthermore, in the exemplary embodiment, the first roller 92 of the biasing roller assembly and the second roller 96 of the biasing roller assembly have a "roller radius." The shaft 94 of the biasing roller assembly includes a first portion 110 having a first radius and a second portion 112 having a second radius. The roller radius is greater than the first radius, and the first radius is greater than the second radius.

[0069] In an exemplary, non-limiting embodiment, the bias roller assembly 90 further includes a motion limiter 130. The bias roller assembly motion limiter 130 is configured to and does limit rotation of the bias roller assembly 90 relative to the support arm 80 about one axis of the bias roller assembly 90. That is, as used herein, the coupling of the bias roller assembly 90 and the support arm 80 includes three axes: an "X-axis," which is an axis extending along the axis of rotation of the bias roller assembly 90, a "Y-axis," which, as described below, extends along the direction of movement of the tab stock, and a "Z-axis," which extends along or parallel to the longitudinal axis of the support arm 80. In the exemplary embodiment, the bias roller assembly motion limiter 130 is configured to and does limit rotation of the bias roller assembly 90 about the "Z-axis."

[0070] That is, the bias roller assembly motion limiter 130 includes a first annular body 132 and a second annular body 134. The first annular body 132 of the bias roller assembly motion limiter is disposed between the first roller 92 of the bias roller assembly and the second end 84 of the support arm body. The second annular body 134 of the bias roller assembly motion limiter is disposed between the second roller 96 of the bias roller assembly and the second end 84 of the support arm body. Each annular body 132, 134 of the bias roller assembly motion limiter substantially fills the space between the rollers 92, 96 and the support arm body 82, particularly the second end 84. In this configuration, the bias roller assembly motion limiter 130 is configured to, and does, limit rotation of the bias roller assembly 90 about an axis aligned with the longitudinal axis of the support arm 80, referred to above as the "Z-axis."

[0071] The biasing roller assembly 90 is assembled when the shaft 94 of the biasing roller assembly is disposed in the bracket channel 88 of the second end of the support arm body. As described above, the first annular body 132 of the biasing roller assembly's motion limiter is disposed between the first roller 92 of the biasing roller assembly and the second end 84 of the support arm body. The second annular body 134 of the biasing roller assembly's motion limiter is disposed between the second roller 96 of the biasing roller assembly and the second end 84 of the support arm body. It will be appreciated that in addition to providing significantly improved wear reduction and, therefore, increased service life compared to prior art designs (in which metal parts typically directly engage and move relative to each other, resulting in significant wear), the above-described assembly also facilitates relatively quick and easy assembly, as well as disassembly, repair, and reassembly when necessary.

[0072] Finally, in the exemplary embodiment, the tab feeder assembly 20 includes a feed guide assembly 140 (in Figure 2 As best shown in Figure 2 As shown, the material guide assembly 140 includes substantially planar members 142, 144, 146, and 148 arranged in pairs. Specifically, the planar member 142 of the material guide assembly is narrowly spaced from the planar member 144 of the material guide assembly, and the planar member 146 of the material guide assembly is narrowly spaced from the planar member 148 of the material guide assembly. The spacing between the planar members 142, 144, 146, and 148 of the material guide assembly is slightly greater than the thickness of the tab stock. Furthermore, the paired planar members 142, 144 and 146, 148 of the material guide assembly are also spaced apart from each other. The drive wheel 28 (more specifically, the radially outer surface (not labeled) of the drive wheel 28) is positioned in the gap between the paired planar members 142, 144 and 146, 148 of the material guide assembly.

[0073] In this configuration, the tab stock feeder assembly 20 generally operates as follows. Tab stock 200 (shown in simplified form) moves through the tab stock guide assembly 140 until it reaches the gap between the paired planar members 142, 144 and 146, 148 of the stock guide assembly. When the lifting member assembly 42, and therefore the support arm 80 and biasing roller assembly 90, moves to the first position, the biasing roller assembly 90 biases the tab stock 200 onto the drive wheel 28, which itself rotates and causes the tab stock 200 to move toward a tool (such as, but not limited to, Figure 1The upper and lower tools 12, 14 (of the embodiment shown in FIG. 1 ) are moved and move therebetween. When the tools 12, 14 are moved to their second position (i.e., the forming position), the lifting member assembly 42, and therefore the support arm 80 and biasing roller assembly 90, are moved to their second position. In the second position, the biasing roller assembly 90 does not bias the tab stock 200 against the drive wheel 28. Thus, when the tools 12, 14 are in the second, forming position, the tab stock 200 is stationary. When the tools 12, 14 are moved toward the first position, the lifting member assembly 42, and therefore the support arm 80 and biasing roller assembly 90, are moved back to the first position, causing the tab stock 200 to move as described above. Thus, while the tools 12, 14 are forming the tab stock 200 into the tab 202 and / or while the tab 202 is being secured to a can end (not shown), the tab stock feeder assembly 20 is configured to and does index the tab stock 200, even if the tab stock is intermittently moving.

[0074] In this configuration, the various components of the pull tab feeder assembly 20 are subject to wear. For example, referring to Figure 6 , as the lift member assembly 42 preferably pivots over an arc between 0 and 10 degrees, and more preferably less than 1 degree, the lift member assembly's hinge pin 64 is subject to wear at specific locations. That is, the wear is limited to the area of the lift member assembly's hinge pin 64 that contacts the base's plurality of hinge sleeves 52 and the lift member assembly's plurality of hinge sleeves 62, and is limited to the arc of motion. That is, the wear does not extend around the lift member assembly's hinge pin 64. Additionally, with reference to Figure 2 、 3 , 5, 6, and 7, the biasing roller assembly 90 is subject to wear resulting from forces applied to the rotating element in planes other than the plane of rotation of the rotating element. That is, the biasing roller assembly 90 is subject to forces in planes other than the plane of rotation of the biasing roller assembly 90. The wear reduction assembly 30 is configured to and does reduce wear on the hinge pin 64 of the lift member assembly and the biasing roller assembly 90.

[0075] In the exemplary embodiment, the plurality of wear reducing elements 32 of the wear reduction assembly include a number of ball bearings 150 and a plurality of one-way clutch devices 160. At least one such wear reducing element 32 is disposed between the hinge pin 64 of the lifting member assembly and at least one of the plurality of hinge sleeves 52 of the base and / or the plurality of hinge sleeves 62 of the lifting member assembly, as in Figure 6 In addition, at least one such wear reducing element 32 is disposed between the biasing roller assembly 90 and the support arm 80, as shown in FIG. Figure 7 This is best shown in the enlarged cross-sectional view of FIG.

[0076] like Figure 6As shown, in an exemplary, non-limiting embodiment, a one-way clutch device 160 is disposed between the hinge pin 64 of the lift member assembly and one of the hinge sleeves 62 of the lift member assembly. In an embodiment not shown, the one-way clutch device 160 is a spring clutch, i.e., a spring-like member threadedly disposed around the hinge pin 64 of the lift member assembly. In the illustrated embodiment, the one-way clutch device 160 is a one-way clutch bearing 162. The one-way clutch bearing 162 includes an inner race 164, an outer race 166, and a plurality of non-spherical bearing elements 168 disposed therebetween. The non-spherical bearing elements 168 are typically referred to as "spikes." The non-spherical bearing elements 168 are configured to and do allow the inner race 164 and outer race 166 to rotate relative to each other in a single direction. Furthermore, the inner race 164 is secured to the hinge pin 64 of the lift member assembly, and the outer race 166 is secured to the hinge sleeve 62 of the lift member assembly. In this configuration, and when the lift member assembly 42 reciprocates between the first and second positions, the one-way clutch bearing 162 causes the lift member assembly's hinge pin 64 to rotate in a single direction. That is, for example, when the lift member assembly 42 moves toward the first position, the races 164 and 166 of the one-way clutch bearing rotate relative to each other, thereby preventing the lift member assembly's hinge pin 64 from moving. When the lift member assembly 42 moves toward the second position, the races 164 and 166 of the one-way clutch bearing do not rotate relative to each other. Because the inner race 164 is secured to the lift member assembly's hinge pin 64 and the outer race 166 is secured to the lift member assembly's hinge sleeve 62, this causes the lift member assembly's hinge pin 64 to rotate relative to the lift member assembly's hinge sleeve 62. Therefore, any wear that occurs between the lift member assembly's hinge pin 64 and the lift member assembly's hinge sleeve 62 occurs around the lift member assembly's hinge pin 64, i.e., 360 degrees. Therefore, wear is no longer caused under certain circumstances. This resolves the aforementioned issue.

[0077] In addition, Figure 7 In the exemplary, non-limiting embodiment shown, a spherical roller bearing 170 is disposed between the bias roller assembly 90 and the support arm 80. That is, the spherical roller bearing 170 is disposed in the bracket channel 88 at the second end of the support arm body between the support arm 80 and the second portion 112 of the bias roller assembly's shaft. In this configuration, a force along the "Y-axis" causes the bias roller assembly 90 to rotate about the "Y-axis." This motion both reduces wear on the bias roller assembly 90 and allows the bias roller assembly 90 to evenly engage the tab stock 200 ( Figure 2 A pair of annular bearing assemblies (such as annular ball bearings 172) are preferably disposed in the bracket channel 88 at the second end of the upper arm body between the first portion 110 of the biasing roller assembly shaft and the proximate opposite end of the shaft 94, as shown. Figure 7It will be appreciated that the aforementioned features are used to solve the above problems individually and / or in combination.

[0078] Although specific embodiments of the present invention have been described in detail, it will be appreciated by those skilled in the art that various modifications and alternatives to these details may be developed in light of the overall teachings of this disclosure. Therefore, the specific arrangements disclosed are intended to be illustrative only and not limiting of the scope of the invention, which shall be given the full scope of the appended claims and any and all equivalents thereof.

Claims

1. A pull-tab material feeder assembly (20) for a press (10), the pull-tab material feeder assembly (20) comprising: a plurality of support elements (22); a plurality of rotating elements (24); a certain number of operating elements (26); Each rotating element (24) is rotatably coupled to an associated support element (22); Each operating element (26) is coupled to at least one of the plurality of supporting elements (22) or one of the plurality of rotating elements (24), and wherein each of the operating elements (26) is configured to engage with the rotating element (24); A wear reduction assembly (30) comprising a plurality of wear reducing elements (32), wherein the plurality of support elements (22) are such that at least one first wear reducing element of the wear reduction assembly is disposed between a rotating element (24) and an associated support element (22); Wherein, the first wear-reducing element includes a certain number of first ball bearings (150) and a certain number of one-way clutch devices (160); Wherein, the one-way clutch device (160) is a one-way clutch bearing (162); and The one-way clutch bearing (162) includes an inner race (164), an outer race (166), and a plurality of non-spherical bearing elements (168) between the inner race and the outer race.

2. The pull-tab material feeder assembly (20) according to claim 1, wherein: The plurality of support elements (22) include a base (40) and a lifting member assembly (42); The plurality of rotating elements (24) include the lifting member assembly (42) and the cam member (44); The number of operating elements (26) includes a cam follower (46); The cam member (44) is rotatably coupled to the base (40); The lifting member assembly (42) is rotatably coupled to the base (40); The cam follower (46) is coupled to the lift member assembly (42) and is configured to operably engage the cam member (44); wherein the cam member (44) is configured to rotate on the base (40) and operably engage the cam follower (46), whereby the lifting member assembly (42) is configured to move in a reciprocating pivotal motion between a first position in which the lifting member assembly (42) is substantially adjacent to the base (40) and a second position in which the lifting member assembly (42) is substantially spaced apart from the base (40).

3. The pull tab feeder assembly (20) according to claim 2, wherein: The lifting member assembly (42) includes a hinge pin (64) and a plurality of hinge sleeves (62); The base (40) includes a plurality of articulated sleeves (52); wherein the hinge pin (64) of the lifting member assembly extends through the plurality of hinge sleeves (62) of the lifting member assembly and the plurality of hinge sleeves (52) of the base, thereby pivotally coupling the lifting member assembly (42) to the base (40); wherein a one-way clutch device (160) is provided between a hinge pin (64) of the lifting member assembly and at least one hinge sleeve of a plurality of hinge sleeves (62) of the lifting member assembly; and The one-way clutch device (160) is configured to rotate a hinge pin (64) of the lifting member assembly when the lifting member assembly (42) moves between the first position and the second position.

4. The pull tab feeder assembly (20) according to claim 1, wherein: The plurality of support elements (22) include a base (40), a lifting member assembly (42), and a support arm (80); The plurality of rotating elements (24) include the lift member assembly (42), the cam member (44), and the biasing roller assembly (90); The number of operating elements (26) includes a cam follower (46); The cam member (44) is rotatably coupled to the base (40); The lifting member assembly (42) is rotatably coupled to the base (40); The cam follower (46) is coupled to the lift member assembly (42) and is configured to operably engage the cam member (44); wherein the cam member (44) is configured to rotate on the base (40) and operably engage the cam follower (46), whereby the lifting member assembly (42) is configured to move in a reciprocating pivotal motion between a first position in which the lifting member assembly (42) is substantially adjacent to the base (40) and a second position in which the lifting member assembly (42) is substantially spaced apart from the base (40); The support arm (80) includes a body (82) defining a channel (88); The support arm (80) is coupled to the lifting member assembly (42); The biasing roller assembly (90) includes a first roller (92), a shaft (94) and a second roller (96); The shaft (94) of the biasing roller assembly is rotatably disposed in the channel (88) of the support arm; and A second wear reducing element of the plurality of wear reducing elements (32) is disposed between the biasing roller assembly (90) and the support arm (80), The second wear reducing element includes a certain number of spherical roller bearings (170) and a certain number of second ball bearings (172).

5. The pull-tab material feeder assembly (20) according to claim 4, wherein: A spherical roller bearing (170) is disposed between the bias roller assembly shaft (94) and the support arm (80).

6. The pull tab feeder assembly (20) according to claim 5, wherein: The biasing roller assembly (90) includes a motion limiter (130); and The biasing roller assembly motion limiter (130) is configured to limit rotation of the biasing roller assembly (90) relative to the support arm (80) about an axis of the biasing roller assembly (90).

7. The pull tab feeder assembly (20) according to claim 6, wherein: The support arm (80) includes an elongated body (82) having a longitudinal axis; and The biasing roller assembly motion limiter (130) is configured to limit rotation of the biasing roller assembly (90) about an axis aligned with the longitudinal axis of the support arm (80).

8. A press (10), comprising: Upper tool (12); Lower tool (14); and A pull ring material feeder assembly (20) comprising: a plurality of support elements (22); a plurality of rotating elements (24); a certain number of operating elements (26); Each rotating element (24) is rotatably coupled to an associated support element (22); Each operating element (26) is coupled to at least one of the plurality of supporting elements (22) or one of the plurality of rotating elements (24), and wherein each of the operating elements (26) is configured to engage with the rotating element (24); and A wear reduction assembly (30) comprising a plurality of wear reducing elements (32), wherein a plurality of support elements (22) are configured such that at least one first wear reducing element of the wear reduction assembly is disposed between a rotating element (24) and an associated support element (22), wherein the tab feeder assembly (20) is configured to feed tabs between the upper tool (12) and the lower tool (14); Wherein, the first wear-reducing element includes a certain number of first ball bearings (150) and a certain number of one-way clutch devices (160); Wherein, the one-way clutch device (160) is a one-way clutch bearing (162); and The one-way clutch bearing (162) includes an inner race (164), an outer race (166), and a plurality of non-spherical bearing elements (168) between the inner race and the outer race.

9. The press (10) according to claim 8, wherein: The plurality of support elements (22) include a base (40) and a lifting member assembly (42); The plurality of rotating elements (24) include the lifting member assembly (42) and the cam member (44); The number of operating elements (26) includes a cam follower (46); The cam member (44) is rotatably coupled to the base (40); The lifting member assembly (42) is rotatably coupled to the base (40); The cam follower (46) is coupled to the lift member assembly (42) and is configured to operably engage the cam member (44); wherein the cam member (44) is configured to rotate on the base (40) and operably engage the cam follower (46), whereby the lifting member assembly (42) is configured to move in a reciprocating pivotal motion between a first position in which the lifting member assembly (42) is substantially adjacent to the base (40) and a second position in which the lifting member assembly (42) is substantially spaced apart from the base (40).

10. The press (10) according to claim 9, wherein: The lifting member assembly (42) includes a hinge pin (64) and a plurality of hinge sleeves (62); The base (40) includes a plurality of articulated sleeves (52); wherein the hinge pin (64) of the lifting member assembly extends through the plurality of hinge sleeves (62) of the lifting member assembly and the plurality of hinge sleeves (52) of the base, thereby pivotally coupling the lifting member assembly (42) to the base (40); wherein a one-way clutch device (160) is provided between a hinge pin (64) of the lifting member assembly and at least one hinge sleeve of a plurality of hinge sleeves (62) of the lifting member assembly; and The one-way clutch device (160) is configured to rotate a hinge pin (64) of the lifting member assembly when the lifting member assembly (42) moves between the first position and the second position.

11. The press (10) according to claim 8, wherein: The plurality of support elements (22) include a base (40), a lifting member assembly (42), and a support arm (80); The plurality of rotating elements (24) include the lift member assembly (42), the cam member (44), and the biasing roller assembly (90); The number of operating elements (26) includes a cam follower (46); The cam member (44) is rotatably coupled to the base (40); The lifting member assembly (42) is rotatably coupled to the base (40); The cam follower (46) is coupled to the lift member assembly (42) and is configured to operably engage the cam member (44); wherein the cam member (44) is configured to rotate on the base (40) and operably engage the cam follower (46), whereby the lifting member assembly (42) is configured to move in a reciprocating pivotal motion between a first position in which the lifting member assembly (42) is substantially adjacent to the base (40) and a second position in which the lifting member assembly (42) is substantially spaced apart from the base (40); The support arm (80) includes a body (82) defining a channel (88); The support arm (80) is coupled to the lifting member assembly (42); The biasing roller assembly (90) includes a first roller (92), a shaft (94) and a second roller (96); The shaft (94) of the biasing roller assembly is rotatably disposed in the channel (88) of the support arm; and A second wear reducing element of the plurality of wear reducing elements (32) is disposed between the biasing roller assembly (90) and the support arm (80), The second wear reducing element includes a certain number of spherical roller bearings (170) and a certain number of second ball bearings (172).

12. The press (10) according to claim 11, wherein A spherical roller bearing (170) is disposed between the bias roller assembly shaft (94) and the support arm (80).

13. The press (10) according to claim 12, wherein: The biasing roller assembly (90) includes a motion limiter (130); and The biasing roller assembly motion limiter (130) is configured to limit rotation of the biasing roller assembly (90) relative to the support arm (80) about an axis of the biasing roller assembly.

14. The press (10) according to claim 13, wherein: The support arm (80) includes an elongated body (82) having a longitudinal axis; and The biasing roller assembly motion limiter (130) is configured to limit rotation of the biasing roller assembly (90) about an axis aligned with the longitudinal axis of the support arm (80).

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