US20200156136A1 - Dampening assembly for can bodymaker ram - Google Patents
Dampening assembly for can bodymaker ram Download PDFInfo
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- US20200156136A1 US20200156136A1 US16/774,015 US202016774015A US2020156136A1 US 20200156136 A1 US20200156136 A1 US 20200156136A1 US 202016774015 A US202016774015 A US 202016774015A US 2020156136 A1 US2020156136 A1 US 2020156136A1
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- US
- United States
- Prior art keywords
- ram body
- assembly
- dampening
- ram
- dampening member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/30—Deep-drawing to finish articles formed by deep-drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/28—Deep-drawing of cylindrical articles using consecutive dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/02—Sliding-contact bearings
- F16C29/025—Hydrostatic or aerostatic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/14—Stamping, deep-drawing or punching, e.g. die sets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/10—Functional characteristics, e.g. variability, frequency-dependence with threshold or dead zone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/26—Air gap
Definitions
- the disclosed and claimed concept relates to a can bodymaker wherein the ram assembly has a reduced length and, more specifically, to a dampening assembly for a reduced length ram body.
- an aluminum can begins as a disk of aluminum, also known as a “blank,” that is punched from a sheet or coil of aluminum. That is, the sheet is fed into a dual action press where a “blank” disc is cut from the sheet by an outer slide/ram motion. An inner slide/ram then pushes the “blank” through a draw process to create a cup 2 , FIG. 1 .
- the cup has a bottom and a depending sidewall.
- the cup is fed into a bodymaker 1 , which performs a redraw and ironing operation. More specifically, the cup 2 is disposed in a can forming machine at the mouth of a die pack 6 having substantially circular openings therein.
- the cup 2 is held in place by a redraw sleeve, which is part of the redraw assembly 8 .
- the redraw sleeve is a hollow tubular construct that is disposed inside the cup 2 and biases the cup against the die pack 6 . More specifically, the first die in the die pack 6 is the redraw die, which is not a part of the redraw assembly.
- the cup 2 is biased against the redraw die by the redraw sleeve.
- Other dies, the ironing dies are disposed behind, and axially aligned with, the redraw die. The ironing dies and redraw die are not part of the redraw assembly.
- An elongated, cylindrical ram assembly (not numbered), shown in FIGS.
- a carriage 7 that supports a ram 9 with a punch at the forward, distal end.
- the ram 9 and punch are aligned with, and structured to travel through, the openings in the redraw die and the ironing dies.
- a domer “D” At the end of the die pack 6 opposite the ram is a domer “D”.
- the domer is a die structured to form a concave dome in the bottom of the cup/can.
- the ram 9 was supported by a bearing “B” disposed before the die pack 6 .
- a seal assembly “S” was disposed between the bearing assembly “B” and the die pack 6 .
- the seal assembly “S” removed coolant and lubricant from the ram.
- a cup is disposed at one end of the die pack.
- the cup typically, has a greater diameter than a finished can as well as a greater wall thickness.
- the redraw sleeve is disposed inside of the cup and biases the cup bottom against the redraw die.
- the opening in the redraw die has a diameter that is smaller than the cup.
- the elongated ram body, and more specifically the punch passes through the hollow redraw sleeve and contacts the bottom of the cup. As the ram body continues to move forward, the cup is moved through the redraw die. As the opening in the redraw die is smaller than the original diameter of the cup, the cup is deformed and becomes elongated with a smaller diameter.
- the wall thickness of the cup typically, remains the same as the cup passes through the redraw die.
- the elongated cup passes through a number of ironing dies.
- the ironing dies each thin the wall thickness of the cup causing the cup to elongate.
- the final forming of the can body occurs when the bottom of the elongated cup engages the domer, creating a concave dome in the cup bottom.
- the can body is elongated, has a thinner wall, and a domed bottom. This process is repeated as the ram body reciprocates. That is, the ram travels toward, and through, the die pack on a forward stroke, and, travels backwards through the die pack and away from the die pack on a return stroke.
- the can body is ejected from the ram, and more specifically the punch, for further processing, such as, but not limited to trimming, washing, printing, flanging, inspecting, and placed on pallets, which are shipped to the filler.
- further processing such as, but not limited to trimming, washing, printing, flanging, inspecting, and placed on pallets, which are shipped to the filler.
- the cans are taken off of the pallets, filled, ends placed on them and then the filled cans are repackaged in six packs and/or twelve pack cases, etc.
- Bodymakers 1 such as those described above have several known problems relating to the length of the ram as disclosed in U.S. patent application Ser. No. 14/471,043, and the Background Information portion thereof is incorporated herein by reference.
- a reduced length ram body having a length of between about 26.0 inches and 36.0 inches solves some of the problems of a longer ram.
- a ram body with such a reduced length can operate without a forward bearing that supports and guides the ram body.
- a ram body with such a reduced length in operation without a forward bearing in certain instances, however, has other problems such as vibration. That is, a ram body is prone to vibration upon, and after, the can body contacts the domer. As this contact occurs just before the ram body is withdrawn through the die pack, the ram body is likely to be vibrating as the ram body is being withdrawn through the die pack. Further, vibration of the ram body is also a problem during redraw operations.
- a “dampening assembly” includes a “dampening member,” which, as defined below, does not provide support to the ram body.
- a bearing is not a “dampening member” and a bearing assembly is not, as used herein, a “dampening assembly.”
- the rain body dampening assembly is disposed adjacent the ram body path of travel.
- the ram body dampening assembly includes a housing and the dampening member. The dampening member is coupled to the ram body dampening assembly housing.
- the dampening member is disposed immediately adjacent the ram body path of travel.
- a dampening assembly in the configuration described or claimed below solves the problems stated above. That is, for example, the dampening assembly in the configuration described or claimed below is structured to dampen vibration of the ram body as the ram body is withdrawn through the die pack, during redraw operations, and/or at any position between the ram body first and second positions.
- FIG. 1 is a cross-sectional side view of a prior art bodymaker.
- FIG. 2 is a cross-sectional side view of a bodymaker.
- FIG. 3 is a detail cross-sectional side view of a ram assembly and a dampening assembly.
- FIG. 3A is a detail cross-sectional side view of a ram assembly and a dampening assembly.
- a bodymaker includes an elongated reciprocating ram assembly and a domer assembly.
- the domer assembly is disposed at the “forward” end of the bodymaker.
- the ram assembly when the ram assembly is adjacent the domer assembly, the ram assembly is at the “forward” end of its stroke.
- the “rear” or “back” end of the bodymaker is disposed opposite the “forward” end.
- the bodymaker has a “longitudinal” direction that is parallel to the longitudinal axis of the ram assembly body, described below, as well as a “lateral” direction that is generally horizontal and perpendicular to the “longitudinal” direction.
- structured to [verb] means that the identified element or assembly has a structure that is shaped, sized, disposed, coupled and/or configured to perform the identified verb.
- a member that is “structured to move” is movably coupled to another element and includes elements that cause the member to move or the member is otherwise configured to move in response to other elements or assemblies.
- structured to [verb] recites structure and not function.
- structured to [verb] means that the identified element or assembly is intended to, and is designed to, perform the identified verb. Thus, an element that is merely capable of performing the identified verb but which is not intended to, and is not designed to, perform the identified verb is not “structured to [verb].”
- association means that the elements are part of the same assembly and/or operate together, or, act upon/with each other in some manner.
- an automobile has four tires and four hub caps. While all the elements are coupled as part of the automobile, it is understood that each hubcap is “associated” with a specific tire.
- two or more parts or components are “coupled” shall mean that the parts are joined or operate together either directly or indirectly, i.e., through one or more intermediate parts or components, so long as a link occurs.
- directly coupled means that two elements are directly in contact with each other.
- fixedly coupled or “fixed” means that two components are coupled so as to move as one while maintaining a constant orientation relative to each other. Accordingly, when two elements are coupled, all portions of those elements are coupled.
- a description, however, of a specific portion of a first element being coupled to a second element, e.g., an axle first end being coupled to a first wheel, means that the specific portion of the first element is disposed closer to the second element than the other portions thereof.
- an object resting on another object held in place only by gravity is not “coupled” to the lower object unless the upper object is otherwise maintained substantially in place. That is, for example, a book on a table is not coupled thereto, but a book glued to a table is coupled thereto.
- a “fastener” is a separate component structured to couple two or more elements.
- a bolt is a “fastener” but a tongue-and-groove coupling is not a “fastener.” That is, the tongue-and-groove elements are part of the elements being coupled and are not a separate component.
- the phrase “removably coupled” or “temporarily coupled” means that one component is coupled with another component in an essentially temporary manner That is, the two components are coupled in such a way that the joining or separation of the components is easy and would not damage the components.
- two components secured to each other with a limited number of readily accessible fasteners, i.e., fasteners that are not difficult to access are “removably coupled” whereas two components that are welded together or joined by difficult to access fasteners are not “removably coupled.”
- a “difficult to access fastener” is one that requires the removal of one or more other components prior to accessing the fastener wherein the “other component” is not an access device such as, but not limited to, a door.
- “temporarily disposed” means that a first element(s) or assembly (ies) is resting on a second element(s) or assembly(ies) in a manner that allows the first element/assembly to be moved without having to decouple or otherwise manipulate the first element.
- a book simply resting on a table i.e., the book is not glued or fastened to the table, is “temporarily disposed” on the table.
- operatively coupled means that a number of elements or assemblies, each of which is movable between a first position and a second position, or a first configuration and a second configuration, are coupled so that as the first element moves from one position/configuration to the other, the second element moves between positions/configurations as well. It is noted that a first element may be “operatively coupled” to another without the opposite being true.
- a “coupling assembly” includes two or more couplings or coupling components.
- the components of a coupling or coupling assembly are generally not part of the same element or other component. As such, the components of a “coupling assembly” may not be described at the same time in the following description.
- a “coupling” or “coupling component(s)” is one or more component(s) of a coupling assembly. That is, a coupling assembly includes at least two components that are structured to be coupled together. It is understood that the components of a coupling assembly are compatible with each other. For example, in a coupling assembly, if one coupling component is a snap socket, the other coupling component is a snap plug, or, if one coupling component is a bolt, then the other coupling component is a nut.
- “correspond” indicates that two structural components are sized and shaped to be similar to each other and may be coupled with a minimum amount of friction.
- an opening which “corresponds” to a member is sized slightly larger than the member so that the member may pass through the opening with a minimum amount of friction.
- This definition is modified if the two components are to fit “snugly” together. In that situation, the difference between the size of the components is even smaller whereby the amount of friction increases.
- the element defining the opening and/or the component inserted into the opening are made from a deformable or compressible material, the opening may even be slightly smaller than the component being inserted into the opening.
- surfaces, shapes, and lines two, or more, “corresponding” surfaces, shapes, or lines have generally the same size, shape, and contours.
- a “planar body” or “planar member” is a generally thin element including opposed, wide, generally parallel surfaces, i.e., the planar surfaces of the planar member, as well as a thinner edge surface extending between the wide parallel surfaces. That is, as used herein, it is inherent that a “planar” element has two opposed planar surfaces.
- the perimeter, and therefore the edge surface may include generally straight portions, e.g., as on a rectangular planar member, or be curved, as on a disk, or have any other shape.
- a “path of travel” or “path,” when used in association with an element that moves, includes the space an element moves through when in motion. As such, any element that moves inherently has a “path of travel” or “path.”
- the statement that two or more parts or components “engage” one another shall mean that the elements exert a force or bias against one another either directly or through one or more intermediate elements or components. Further, as used herein with regard to moving parts, a moving part may “engage” another element during the motion from one position to another and/or may “engage” another element once in the described position. Thus, it is understood that the statements, “when element A moves to element A first position, element A engages element B,” and “when element A is in element A first position, element A engages element B” are equivalent statements and mean that element A either engages element B while moving to element A first position and/or element A either engages element B while in element A first position.
- operatively engage means “engage and move.” That is, “operatively engage” when used in relation to a first component that is structured to move a movable or rotatable second component means that the first component applies a force sufficient to cause the second component to move.
- a screwdriver may be placed into contact with a screw. When no force is applied to the screwdriver, the screwdriver is merely “coupled” to the screw. If an axial force is applied to the screwdriver, the screwdriver is pressed against the screw and “engages” the screw. However, when a rotational force is applied to the screwdriver, the screwdriver “operatively engages” the screw and causes the screw to rotate.
- “operatively engage” means that one component controls another component by a control signal or current.
- unitary means a component that is created as a single piece or unit. That is, a component that includes pieces that are created separately and then coupled together as a unit is not a “unitary” component or body.
- number shall mean one or an integer greater than one (i.e., a plurality).
- [x] moves between its first position and second position,” or, “[y] is structured to move [x] between its first position and second position,” “[x]” is the name of an element or assembly.
- [x] is an element or assembly that moves between a number of positions
- the pronoun “its” means “[x],” i.e., the named element or assembly that precedes the pronoun “its.”
- a “radial side/surface” for a circular or cylindrical body is a side/surface that extends about, or encircles, the center thereof or a height line passing through the center thereof.
- an “axial side/surface” for a circular or cylindrical body is a side that extends in a plane extending generally perpendicular to a height line passing through the center. That is, generally, for a cylindrical soup can, the “radial side/surface” is the generally circular sidewall and the “axial side(s)/surface(s)” are the top and bottom of the soup can.
- can and “container” are used substantially interchangeably to refer to any known or suitable container, which is structured to contain a substance (e.g., without limitation, liquid; food; any other suitable substance), and expressly includes, but is not limited to, beverage cans, such as beer and soda cans, as well as food cans.
- a substance e.g., without limitation, liquid; food; any other suitable substance
- beverage cans such as beer and soda cans, as well as food cans.
- curvilinear includes elements having multiple curved portions, combinations of curved portions and planar portions, and a plurality of planar portions or segments disposed at angles relative to each other thereby forming a curve.
- a “contour” means the line or surface that defines an object. That is, for example, when viewed in cross-section, the surface of a three-dimensional object is reduced to two dimensions; thus, a portion of a three-dimensional surface contour is represented by a two-dimensional line contour.
- a “perimeter portion” means the area at the outer edge of a defined area, surface, or contour.
- “about” in a phrase such as “disposed about [an element, point or axis]” or “extend about [an element, point or axis]” or “[X] degrees about [an element, point or axis],” means encircle, extend around, or measured around.
- “about” means “approximately,” i.e., in an approximate range relevant to the identified measurement as would be understood by one of ordinary skill in the art.
- cantilever or “cantilever member” means a projecting beam or other horizontal member supported at one or more points and having one unsupported end.
- a movable element such as, but not limited to a ram body 50 , described below
- the movable element is a “cantilever member” if at any time during the element's motion, the element has an unsupported end.
- a ram body 50 is a “cantilever member” having a “cantilever length” (defined below) when the ram is in the first position and prior to the ram body 50 (or punch 58 , discussed below) entering the die pack 16 , discussed below.
- a “tension member” is a construct that has a maximum length when exposed to tension, but is otherwise substantially flexible, such as, but not limited to, a chain or a cable.
- a can bodymaker 10 is structured to convert a cup 2 ( FIG. 2 ) into a can body 3 ( FIG. 2 ).
- the cup 2 , the rain body 50 , the passage through the die pack 16 , and other elements are assumed to have a substantially circular cross-section. It is understood, however, that the cup 2 , as well as the resulting can body 3 and elements that interact with the cup 2 or can body 3 , may have a shape other than substantially circular.
- a cup 2 has a bottom member 4 with a depending sidewall 5 defining a substantially enclosed space (none shown). The end of the cup opposite the bottom member 4 is open.
- the can bodymaker 10 includes a housing assembly 11 , a reciprocating ram assembly 12 , a drive mechanism 14 , a die pack 16 , a redraw assembly 18 , a cup feeder 20 and a domer assembly 22 .
- the drive mechanism 14 includes a crank assembly 30 including a reciprocating crank arm 32 .
- the drive mechanism 14 is operatively coupled to the ram assembly 12 and is structured to, and does, impart a reciprocating motion to a ram body 50 , discussed below.
- the cup feeder 20 positions a cup 2 in front of the die pack 16 with the open end facing the ram assembly 12 .
- the die pack 16 defines a passage 17 through a number of dies (not shown).
- the domer assembly 22 includes a dome member 24 having a domed surface. The center/vertex of the dome member 24 is disposed generally, or substantially, on a line with the ram body longitudinal axis 56 , discussed below. Further, the domer assembly 22 is disposed immediately adjacent the ram body 50 path of travel. When the cup 2 is in position in front of the die pack 16 , a redraw sleeve 40 biases the cup 2 against a redraw die 42 .
- the drive mechanism 14 drives the redraw sleeve 40 , e.g., via a number of secondary crank arms (not shown), and is timed so that the redraw sleeve 40 advances just before the ram assembly 12 advances.
- the ram assembly 12 includes the elongated, substantially circular, ram body 50 with a proximal end 52 , a distal end 54 , and a longitudinal axis 56 .
- the ram body distal end 54 includes a punch 58 .
- the ram body proximal end 52 is coupled to the drive mechanism 14 .
- the drive mechanism 14 provides a reciprocal motion to the ram body 50 causing the ram body 50 to move back and forth generally along its longitudinal axis 56 . That is, the ram body 50 is structured to reciprocate between a retracted, first position and a forward, second position over a path of travel. In the first, retracted position, the ram body 50 is spaced from the die pack 16 .
- the ram body 50 In the second, extended position, the ram body 50 extends through the die pack 16 with the punch 58 disposed immediately adjacent the dome member 24 . That is, the cup disposed on the punch 58 contacts the dome member 24 . It is noted that the ram body 50 may be stopped, that is, the drive mechanism 14 may be stopped with the ram body 50 in any position between the first and second positions.
- the reciprocating ram assembly 12 advances forward (to the left as shown) passing through the redraw sleeve 40 and engaging the cup 2 .
- the cup 2 is moved through the redraw die 42 and a number of ironing dies (not shown) within the die pack 16 .
- the cup 2 is converted into a can body 3 within the die pack 16 .
- the can body 3 is formed and, more specifically, the can body 3 becomes elongated while the sidewall 5 becomes thinner.
- a dome is formed in the can bottom member 4 when the can bottom member 4 engages the domer assembly 22 and the dome member 24 .
- the can body 3 is ejected from the punch 58 by any known method or device such as, but not limited to a stripper device or delivering a compressed gas to the inner side of the can body 3 .
- a new cup 2 is disposed in front of the die pack 16 and/or the end of the punch 58 .
- the ram body 50 is a “reduced length ram body.”
- a “reduced length ram body” has a length of between about 26.0 inches and 36.0 inches. In an exemplary embodiment, the ram body 50 has a length about 34.5 inches.
- the ram body 50 is a cantilever member. That is, the ram body proximal end 52 is coupled to the drive mechanism 14 , as noted above, and the ram body distal end 54 is unsupported. Thus, the ram body 50 does not pass through a ram body bearing assembly, such as, but not limited to a bearing assembly including a bearing and the can bodymaker 10 does not include a ram body bearing assembly.
- ram body bearing assembly means an assembly or device that is structured to, and does, provide more than negligible support to a ram body 50 .
- negligible support means an upward force of more than about 10% of the weight of the ram body 50 .
- the ram body 50 is a cantilever member 90 that has a “cantilever length.”
- the “cantilever length” means the length of the cantilever member beyond the support that is closest to the unsupported end.
- an assembly or element that provides negligible support, or insignificant support does not provide meaningful support to the ram body 50 and, therefore, does not change the “cantilever length” of the ram body 50 .
- the cantilever length of the prior art ram body had a dynamic cantilever length. That is, the cantilever length depended upon the length of the ram body 50 extending through the bearing assembly.
- the cantilever length of the cantilever member 90 remains constant during the reciprocal motion of the ram body 50 .
- ram body guide assembly means an assembly or device that directly contacts the ram body 50 and is structured to, and does, guide the ram body.
- a ram body means to continuously position of the ram body longitudinal axis 56 relative to the die pack 16 .
- ram body guide assembly cannot be a “ram body dampening assembly” as defined below. That is, any assembly that supports a ram body cannot be a “ram body dampening assembly.” For example, and as used therein, any support or guide that changes the “cantilever length” of a ram body is not a “ram body dampening assembly.”
- the ram body 50 does not pass through a ram body seal assembly, and, the can bodymaker 10 does not include a ram body seal assembly. That is, as the ram body 50 is not lubricated in a manner similar to prior art ram bodies, the ram body 50 does not extend through a seal assembly structured to collect a substantial amount of lubricant.
- a “ram body seal assembly” means an assembly through which a ram body passes and that is structured to remove a substantial amount of coolant and/or lubricant from the ram body 50 .
- a “ram body seal assembly” may provide negligible support or insignificant support to a ram body 50 .
- ram body seal assembly does not include any construct that is intended to dampen the vibration in a ram body 50 . Any effect on ram body 50 vibration is incidental and, as such, a ram body seal assembly is not structured to dampen ram body 50 vibration. Thus, any construct in a “ram body seal assembly” that incidentally dampens vibration of a ram body 50 is not a “dampening member,” as defined below.
- the can bodymaker 10 includes a ram body dampening assembly 100 , shown in FIGS. 3 and 3A .
- a “ram body dampening assembly” 100 is a construct that is structured to dampen vibration of the ram body 50 during use.
- a “ram body dampening assembly” 100 does not provide more than negligible support or insignificant support to the ram body 50 .
- the ram body dampening assembly 100 is structured to, and does, dampen vibration in the ram body 50 during operation of the can bodymaker 10 . That is, as noted above, during operation of the can bodymaker 10 the ram assembly 12 with a cup 2 disposed over the punch 58 engages the dome member 24 which causes the ram body 50 to vibrate.
- a “dampening member” is a construct structured to dampen the vibration in an elongated body that passes through, or adjacent, the “dampening member.”
- To “dampen,” as used herein, means to reduce the amplitude of a vibration in a vibrating construct.
- a “dampening member” is structured to, and does, provide “dampening engagement” with a vibrating elongated body.
- “dampening engagement” means a rapid and intermittent contact with various locations about the perimeter of a vibrating element and, following the dampening of the vibrations, may also contact the element but does not provide more than negligible support or insignificant support to the ram body 50 .
- “dampening engagement” does not provide support to the elongated body.
- an element does provide support to an elongated body, as used herein, it does not provide “dampening engagement” to the elongated body and cannot be a “dampening member” as defined above.
- “dampening” includes both “active” and “passive” dampening.
- active dampening means that the “dampening assembly” is structured to, and does, detect the vibration and responds with a counter-vibration or other motion that dampens the vibration. Stated alternately, “active” dampening means that energy is expended in a manner that reduces vibration. As used herein, such a dampening assembly is identified as an “active dampening assembly.” Thus, an “active dampening assembly” is structured to, and does, expend energy in a manner that reduces vibration in a vibrating element or assembly.
- a “dampening member” in an “active dampening assembly” is identified herein as an “active dampening member.”
- passive dampening means that the “dampening assembly” is structured to, and is, acted upon by the vibrating member or element but does not expend energy in a manner that reduces vibration. That is, as used herein, a “passive dampening assembly” is structured to, and does, reduce vibration in a vibrating element or assembly without expending energy.
- a dampening assembly that absorbs energy from a vibrating element or assembly and thereby reduces the vibration thereof is a “passive dampening assembly.”
- a “dampening member” in a “passive dampening assembly” is identified herein as a “passive dampening member.”
- the rain body dampening assembly 100 is one of an active dampening assembly or a passive dampening assembly.
- the ram body dampening assembly 100 is a passive dampening assembly.
- a “dampening member” is structured to, and does, define an “air gap” which, as used herein, is the gap between the “dampening member” and the elongated body which it is structured to dampen when the elongated body is not vibrating.
- the “air gap” only exists when the elongated body is not vibrating and disposed immediately adjacent the “dampening member.”
- the vibrating elongated body is a ram body 50
- the can bodymaker when the can bodymaker is not in operation and when the ram body 50 extends through the dampening member 104 , there is an “air gap.”
- an “air gap” does not exist when the elongated body is not disposed in or immediately adjacent the “dampening member.”
- the ram body 50 is in, or close to, the retracted, first position and is not disposed through, or adjacent, the dampening member 104 , there is no “air gap” as defined herein.
- the dampening member 104 includes a generally torus shaped body 105 that includes a generally circular passage 108 structured to allow the ram body 50 to pass therethrough.
- the dampening member passage 108 is between about 0.005 inch and 0.001 inch, or about 0.0025 inch, larger than the cross-sectional area of the ram body 50 .
- the dampening member 104 is structured to, and does, define an air gap about the ram body 50 . That is, in the embodiment discussed above, the “air gap” between the outer surface of the ram body 50 and the inner surface of the dampening member body 105 is between about 0.005 inch and 0.001 inch, or about 0.0025 inch.
- the ram body dampening assembly 100 is disposed adjacent the ram body 50 path of travel.
- the ram body dampening assembly 100 includes a housing 102 and the dampening member 104 .
- the ram body dampening assembly housing 102 defines a passage 106 through which the ram body 50 extends. That is, the ram body dampening assembly housing 102 is disposed about the ram body 50 path of travel.
- the ram body dampening assembly housing 102 does not define a passage and is disposed adjacent the ram body 50 path of travel.
- the ram body dampening assembly housing passage 106 is considerably larger than the cross-sectional area of the ram body 50 . That is, the ram body dampening assembly housing passage 106 is sufficiently large to prevent contact between the ram body 50 and the ram body dampening assembly housing 102 during normal operation of the can bodymaker 10 .
- an exemplary dampening member 104 includes a generally torus shaped body 105 that defines a generally circular passage 108 structured to allow the ram body 50 to pass therethrough.
- the dampening member body 105 is made from a resilient material such as, but not limited to, polyether ether ketone (PEEK).
- PEEK polyether ether ketone
- the dampening member passage 108 substantially corresponds to the cross-sectional area of the ram body 50 .
- the dampening member passage 108 is slightly larger than the cross-sectional area of the ram body 50 and is sized so that an air gap exists between the ram body 50 and the dampening member passage 108 when the ram body 50 extends through the dampening member passage 108 but not when the can bodymaker 10 is in operation. That is, during operation of the can bodymaker 10 , the ram body 50 vibrates causing the ram body 50 to contact the dampening member 104 so that the air gap cannot be measured. In this configuration, the dampening member 104 is disposed immediately adjacent the ram body 50 path of travel. In an alternate embodiment, not shown, the dampening member body does not encircle the ram body 50 .
- an inner surface of the dampening member body 105 i.e., the surface immediately adjacent the ram body 50 path of travel, includes a number of protrusions structured to dampeningly engage the ram body 50 .
- the dampening member 104 is coupled, directly coupled, or fixed to the ram body dampening assembly housing 102 and, as shown, in the ram body dampening assembly housing passage 108 .
- the ram body dampening assembly housing 102 is disposed about (i.e., encircling) or adjacent the ram body 50 path of travel.
- the ram body 50 passes through the ram body dampening assembly housing passage 106 and the dampening member passage 108 .
- the ram body 50 path of travel extends through said dampening member passage 108 .
- the ram body dampening assembly 100 i.e., the dampening member 104 , does not support the ram body 50 .
- the ram body 50 does not contact the dampening member 104 even when the ram body 50 is in the forward, second position.
- the ram body longitudinal axis 56 is aligned with the dampening member passage 108 so that, when the can bodymaker 10 is not in operation, i.e., when the ram body 50 is stationary, and when the ram body 50 extends through the dampening member passage 108 , the ram body 50 does not contact the dampening member 104 .
- the ram body 50 is, in an exemplary embodiment, a “non-active ram body” 50 A.
- a “non-active ram body” 50 A means a ram body 50 that is stationary, and positioned to extend through the dampening member passage 108 .
- a non-active ram body does not contact the dampening member 104 .
- the ram body 50 has a coolant applied thereto.
- the ram body dampening assembly 100 also includes a number of seals 120 structured to remove coolant from the ram body 50 .
- the ram body dampening assembly seals 120 do not support the ram body 50 but, in an exemplary embodiment, provide negligible support or insignificant support to the ram body 50 .
- the ram body dampening assembly seals 120 are spaced from the dampening member 104 .
- the ram body dampening assembly seals 120 and the dampening member 104 are structured to, and do, form an envelope 128 about the ram body 50 .
- the ram body dampening assembly 100 also includes a purge air system 140 .
- the purge air system 140 is disposed, or partially disposed in the ram body dampening assembly housing 102 and includes conduits 142 having a number of inlets 144 disposed adjacent the dampening member 104 and the ram body 50 path of travel.
- the purge air system 140 also includes a drain outlet 146 .
- the purge air system 140 is structured to, and does, provide pressurized gas, such as, but not limited to, air, that expels collected coolant via the drain outlet 146 . That is, the purge air system inlets 144 and drain outlet 146 are disposed in the envelope 128 .
- the purge air system 140 is structured to, and does, provide a pressurized fluid to the envelope 128 .
- the pressurized fluid in the envelope 128 causes coolant and other matter on the ram body 50 to be expelled via the drain outlet 146 .
- the ram body dampening assembly 100 also includes an emergency stripper 150 .
- the emergency stripper 150 includes a body 152 disposed immediately adjacent the ram body 50 path of travel. If a can body 3 contacts the emergency stripper body 152 during the ram body 50 return stroke, the emergency stripper body 152 engages the can body and prevents the can body 3 from continuing to move with the ram body 50 . This action removes the can body 3 from the ram body 50 as the ram body moves backward through the ram body dampening assembly 100 .
Abstract
Description
- This application is a continuation application of and claims priority to U.S. patent application Ser. No. 15/860,702, filed Jan. 3, 2018, entitled, DAMPENING ASSEMBLY FOR CAN BODYMAKER RAM.
- The disclosed and claimed concept relates to a can bodymaker wherein the ram assembly has a reduced length and, more specifically, to a dampening assembly for a reduced length ram body.
- Generally, an aluminum can begins as a disk of aluminum, also known as a “blank,” that is punched from a sheet or coil of aluminum. That is, the sheet is fed into a dual action press where a “blank” disc is cut from the sheet by an outer slide/ram motion. An inner slide/ram then pushes the “blank” through a draw process to create a cup 2,
FIG. 1 . The cup has a bottom and a depending sidewall. The cup is fed into a bodymaker 1, which performs a redraw and ironing operation. More specifically, the cup 2 is disposed in a can forming machine at the mouth of a die pack 6 having substantially circular openings therein. The cup 2 is held in place by a redraw sleeve, which is part of the redraw assembly 8. The redraw sleeve is a hollow tubular construct that is disposed inside the cup 2 and biases the cup against the die pack 6. More specifically, the first die in the die pack 6 is the redraw die, which is not a part of the redraw assembly. The cup 2 is biased against the redraw die by the redraw sleeve. Other dies, the ironing dies, are disposed behind, and axially aligned with, the redraw die. The ironing dies and redraw die are not part of the redraw assembly. An elongated, cylindrical ram assembly (not numbered), shown inFIGS. 1 and 1A , includes acarriage 7 that supports a ram 9 with a punch at the forward, distal end. The ram 9 and punch are aligned with, and structured to travel through, the openings in the redraw die and the ironing dies. At the end of the die pack 6 opposite the ram is a domer “D”. The domer is a die structured to form a concave dome in the bottom of the cup/can. Further, the ram 9 was supported by a bearing “B” disposed before the die pack 6. A seal assembly “S” was disposed between the bearing assembly “B” and the die pack 6. The seal assembly “S” removed coolant and lubricant from the ram. - Thus, in operation, a cup is disposed at one end of the die pack. The cup, typically, has a greater diameter than a finished can as well as a greater wall thickness. The redraw sleeve is disposed inside of the cup and biases the cup bottom against the redraw die. The opening in the redraw die has a diameter that is smaller than the cup. The elongated ram body, and more specifically the punch, passes through the hollow redraw sleeve and contacts the bottom of the cup. As the ram body continues to move forward, the cup is moved through the redraw die. As the opening in the redraw die is smaller than the original diameter of the cup, the cup is deformed and becomes elongated with a smaller diameter. The wall thickness of the cup, typically, remains the same as the cup passes through the redraw die. As the ram continues to move forward, the elongated cup passes through a number of ironing dies. The ironing dies each thin the wall thickness of the cup causing the cup to elongate. The final forming of the can body occurs when the bottom of the elongated cup engages the domer, creating a concave dome in the cup bottom. At this point, and compared to the original shape of the cup, the can body is elongated, has a thinner wall, and a domed bottom. This process is repeated as the ram body reciprocates. That is, the ram travels toward, and through, the die pack on a forward stroke, and, travels backwards through the die pack and away from the die pack on a return stroke.
- After the forming operations on the can body are complete, the can body is ejected from the ram, and more specifically the punch, for further processing, such as, but not limited to trimming, washing, printing, flanging, inspecting, and placed on pallets, which are shipped to the filler. At the filler, the cans are taken off of the pallets, filled, ends placed on them and then the filled cans are repackaged in six packs and/or twelve pack cases, etc.
- Bodymakers 1 such as those described above have several known problems relating to the length of the ram as disclosed in U.S. patent application Ser. No. 14/471,043, and the Background Information portion thereof is incorporated herein by reference. As further disclosed in that application, a reduced length ram body having a length of between about 26.0 inches and 36.0 inches solves some of the problems of a longer ram. For example, a ram body with such a reduced length can operate without a forward bearing that supports and guides the ram body. A ram body with such a reduced length in operation without a forward bearing, in certain instances, however, has other problems such as vibration. That is, a ram body is prone to vibration upon, and after, the can body contacts the domer. As this contact occurs just before the ram body is withdrawn through the die pack, the ram body is likely to be vibrating as the ram body is being withdrawn through the die pack. Further, vibration of the ram body is also a problem during redraw operations.
- The bearing that supported prior art rams dampened the vibration. The newer, reduced length ram bodies, however, are not supported by a bearing and may vibrate as it passes through the die pack. This is a problem as the vibrating ram body may contact and/or damage the dies in the die pack. There is, therefore, a need for a bodymaker having a reduced length ram body that does not vibrate during the return stroke. That is, vibration of the ram body during the return stroke is a stated problem.
- These needs, and others, are met by at least one embodiment of the disclosed and claimed concept which provides a can bodymaker including a housing assembly, a drive mechanism, a rain assembly, a domer assembly, and a ram body “dampening assembly.” A “dampening assembly” includes a “dampening member,” which, as defined below, does not provide support to the ram body. As such, a bearing is not a “dampening member” and a bearing assembly is not, as used herein, a “dampening assembly.” The rain body dampening assembly is disposed adjacent the ram body path of travel. The ram body dampening assembly includes a housing and the dampening member. The dampening member is coupled to the ram body dampening assembly housing. The dampening member is disposed immediately adjacent the ram body path of travel. A dampening assembly in the configuration described or claimed below solves the problems stated above. That is, for example, the dampening assembly in the configuration described or claimed below is structured to dampen vibration of the ram body as the ram body is withdrawn through the die pack, during redraw operations, and/or at any position between the ram body first and second positions.
- A full understanding of the invention can be gained from the following description of the preferred embodiments when read in conjunction with the accompanying drawings in which:
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FIG. 1 is a cross-sectional side view of a prior art bodymaker. -
FIG. 2 is a cross-sectional side view of a bodymaker. -
FIG. 3 is a detail cross-sectional side view of a ram assembly and a dampening assembly.FIG. 3A is a detail cross-sectional side view of a ram assembly and a dampening assembly. - It will be appreciated that the specific elements illustrated in the figures herein and described in the following specification are simply exemplary embodiments of the disclosed concept, which are provided as non-limiting examples solely for the purpose of illustration. Therefore, specific dimensions, orientations, assembly, number of components used, embodiment configurations and other physical characteristics related to the embodiments disclosed herein are not to be considered limiting on the scope of the disclosed concept.
- Directional phrases used herein, such as, for example, clockwise, counterclockwise, left, right, top, bottom, upwards, downwards and derivatives thereof, relate to the orientation of the elements shown in the drawings and are not limiting upon the claims unless expressly recited therein.
- As described below, a bodymaker includes an elongated reciprocating ram assembly and a domer assembly. As used herein, the domer assembly is disposed at the “forward” end of the bodymaker. As used herein, when the ram assembly is adjacent the domer assembly, the ram assembly is at the “forward” end of its stroke. As used herein, the “rear” or “back” end of the bodymaker is disposed opposite the “forward” end. Further, as used herein, the bodymaker has a “longitudinal” direction that is parallel to the longitudinal axis of the ram assembly body, described below, as well as a “lateral” direction that is generally horizontal and perpendicular to the “longitudinal” direction.
- As used herein, the singular form of “a,” “an,” and “the” include plural references unless the context clearly dictates otherwise.
- As used herein, “structured to [verb]” means that the identified element or assembly has a structure that is shaped, sized, disposed, coupled and/or configured to perform the identified verb. For example, a member that is “structured to move” is movably coupled to another element and includes elements that cause the member to move or the member is otherwise configured to move in response to other elements or assemblies. As such, as used herein, “structured to [verb]” recites structure and not function. Further, as used herein, “structured to [verb]” means that the identified element or assembly is intended to, and is designed to, perform the identified verb. Thus, an element that is merely capable of performing the identified verb but which is not intended to, and is not designed to, perform the identified verb is not “structured to [verb].”
- As used herein, “associated” means that the elements are part of the same assembly and/or operate together, or, act upon/with each other in some manner. For example, an automobile has four tires and four hub caps. While all the elements are coupled as part of the automobile, it is understood that each hubcap is “associated” with a specific tire.
- As used herein, the statement that two or more parts or components are “coupled” shall mean that the parts are joined or operate together either directly or indirectly, i.e., through one or more intermediate parts or components, so long as a link occurs. As used herein, “directly coupled” means that two elements are directly in contact with each other. As used herein, “fixedly coupled” or “fixed” means that two components are coupled so as to move as one while maintaining a constant orientation relative to each other. Accordingly, when two elements are coupled, all portions of those elements are coupled. A description, however, of a specific portion of a first element being coupled to a second element, e.g., an axle first end being coupled to a first wheel, means that the specific portion of the first element is disposed closer to the second element than the other portions thereof. Further, an object resting on another object held in place only by gravity is not “coupled” to the lower object unless the upper object is otherwise maintained substantially in place. That is, for example, a book on a table is not coupled thereto, but a book glued to a table is coupled thereto.
- As used herein, a “fastener” is a separate component structured to couple two or more elements. Thus, for example, a bolt is a “fastener” but a tongue-and-groove coupling is not a “fastener.” That is, the tongue-and-groove elements are part of the elements being coupled and are not a separate component.
- As used herein, the phrase “removably coupled” or “temporarily coupled” means that one component is coupled with another component in an essentially temporary manner That is, the two components are coupled in such a way that the joining or separation of the components is easy and would not damage the components. For example, two components secured to each other with a limited number of readily accessible fasteners, i.e., fasteners that are not difficult to access, are “removably coupled” whereas two components that are welded together or joined by difficult to access fasteners are not “removably coupled.” A “difficult to access fastener” is one that requires the removal of one or more other components prior to accessing the fastener wherein the “other component” is not an access device such as, but not limited to, a door.
- As used herein, “temporarily disposed” means that a first element(s) or assembly (ies) is resting on a second element(s) or assembly(ies) in a manner that allows the first element/assembly to be moved without having to decouple or otherwise manipulate the first element. For example, a book simply resting on a table, i.e., the book is not glued or fastened to the table, is “temporarily disposed” on the table.
- As used herein, “operatively coupled” means that a number of elements or assemblies, each of which is movable between a first position and a second position, or a first configuration and a second configuration, are coupled so that as the first element moves from one position/configuration to the other, the second element moves between positions/configurations as well. It is noted that a first element may be “operatively coupled” to another without the opposite being true.
- As used herein, a “coupling assembly” includes two or more couplings or coupling components. The components of a coupling or coupling assembly are generally not part of the same element or other component. As such, the components of a “coupling assembly” may not be described at the same time in the following description.
- As used herein, a “coupling” or “coupling component(s)” is one or more component(s) of a coupling assembly. That is, a coupling assembly includes at least two components that are structured to be coupled together. It is understood that the components of a coupling assembly are compatible with each other. For example, in a coupling assembly, if one coupling component is a snap socket, the other coupling component is a snap plug, or, if one coupling component is a bolt, then the other coupling component is a nut.
- As used herein, “correspond” indicates that two structural components are sized and shaped to be similar to each other and may be coupled with a minimum amount of friction. Thus, an opening which “corresponds” to a member is sized slightly larger than the member so that the member may pass through the opening with a minimum amount of friction. This definition is modified if the two components are to fit “snugly” together. In that situation, the difference between the size of the components is even smaller whereby the amount of friction increases. If the element defining the opening and/or the component inserted into the opening are made from a deformable or compressible material, the opening may even be slightly smaller than the component being inserted into the opening. With regard to surfaces, shapes, and lines, two, or more, “corresponding” surfaces, shapes, or lines have generally the same size, shape, and contours.
- As used herein, a “planar body” or “planar member” is a generally thin element including opposed, wide, generally parallel surfaces, i.e., the planar surfaces of the planar member, as well as a thinner edge surface extending between the wide parallel surfaces. That is, as used herein, it is inherent that a “planar” element has two opposed planar surfaces. The perimeter, and therefore the edge surface, may include generally straight portions, e.g., as on a rectangular planar member, or be curved, as on a disk, or have any other shape.
- As used herein, a “path of travel” or “path,” when used in association with an element that moves, includes the space an element moves through when in motion. As such, any element that moves inherently has a “path of travel” or “path.”
- As used herein, the statement that two or more parts or components “engage” one another shall mean that the elements exert a force or bias against one another either directly or through one or more intermediate elements or components. Further, as used herein with regard to moving parts, a moving part may “engage” another element during the motion from one position to another and/or may “engage” another element once in the described position. Thus, it is understood that the statements, “when element A moves to element A first position, element A engages element B,” and “when element A is in element A first position, element A engages element B” are equivalent statements and mean that element A either engages element B while moving to element A first position and/or element A either engages element B while in element A first position.
- As used herein, “operatively engage” means “engage and move.” That is, “operatively engage” when used in relation to a first component that is structured to move a movable or rotatable second component means that the first component applies a force sufficient to cause the second component to move. For example, a screwdriver may be placed into contact with a screw. When no force is applied to the screwdriver, the screwdriver is merely “coupled” to the screw. If an axial force is applied to the screwdriver, the screwdriver is pressed against the screw and “engages” the screw. However, when a rotational force is applied to the screwdriver, the screwdriver “operatively engages” the screw and causes the screw to rotate. Further, with electronic components, “operatively engage” means that one component controls another component by a control signal or current.
- As used herein, the word “unitary” means a component that is created as a single piece or unit. That is, a component that includes pieces that are created separately and then coupled together as a unit is not a “unitary” component or body.
- As used herein, the term “number” shall mean one or an integer greater than one (i.e., a plurality).
- As used herein, in the phrase “[x] moves between its first position and second position,” or, “[y] is structured to move [x] between its first position and second position,” “[x]” is the name of an element or assembly. Further, when [x] is an element or assembly that moves between a number of positions, the pronoun “its” means “[x],” i.e., the named element or assembly that precedes the pronoun “its.”
- As used herein, a “radial side/surface” for a circular or cylindrical body is a side/surface that extends about, or encircles, the center thereof or a height line passing through the center thereof. As used herein, an “axial side/surface” for a circular or cylindrical body is a side that extends in a plane extending generally perpendicular to a height line passing through the center. That is, generally, for a cylindrical soup can, the “radial side/surface” is the generally circular sidewall and the “axial side(s)/surface(s)” are the top and bottom of the soup can.
- As used herein, the terms “can” and “container” are used substantially interchangeably to refer to any known or suitable container, which is structured to contain a substance (e.g., without limitation, liquid; food; any other suitable substance), and expressly includes, but is not limited to, beverage cans, such as beer and soda cans, as well as food cans.
- As used herein, “generally curvilinear” includes elements having multiple curved portions, combinations of curved portions and planar portions, and a plurality of planar portions or segments disposed at angles relative to each other thereby forming a curve.
- As used herein, a “contour” means the line or surface that defines an object. That is, for example, when viewed in cross-section, the surface of a three-dimensional object is reduced to two dimensions; thus, a portion of a three-dimensional surface contour is represented by a two-dimensional line contour.
- As used herein, a “perimeter portion” means the area at the outer edge of a defined area, surface, or contour.
- As used herein, “about” in a phrase such as “disposed about [an element, point or axis]” or “extend about [an element, point or axis]” or “[X] degrees about [an element, point or axis],” means encircle, extend around, or measured around. When used in reference to a measurement or in a similar manner, “about” means “approximately,” i.e., in an approximate range relevant to the identified measurement as would be understood by one of ordinary skill in the art.
- As used herein, “generally” means “in a general manner” relevant to the term being modified as would be understood by one of ordinary skill in the art.
- As used herein, “substantially” means “for the most part” relevant to the term being modified as would be understood by one of ordinary skill in the art.
- As used herein, “at” means on and near relevant to the term being modified as would be understood by one of ordinary skill in the art.
- As used herein, “cantilever” or “cantilever member” means a projecting beam or other horizontal member supported at one or more points and having one unsupported end. With respect to a movable element, such as, but not limited to a ram body 50, described below, the movable element is a “cantilever member” if at any time during the element's motion, the element has an unsupported end. Thus, a ram body 50 is a “cantilever member” having a “cantilever length” (defined below) when the ram is in the first position and prior to the ram body 50 (or punch 58, discussed below) entering the die pack 16, discussed below.
- As used herein, a “tension member” is a construct that has a maximum length when exposed to tension, but is otherwise substantially flexible, such as, but not limited to, a chain or a cable.
- As shown in
FIG. 2 , a can bodymaker 10 is structured to convert a cup 2 (FIG. 2 ) into a can body 3 (FIG. 2 ). As described below, the cup 2, the rain body 50, the passage through the die pack 16, and other elements are assumed to have a substantially circular cross-section. It is understood, however, that the cup 2, as well as the resulting can body 3 and elements that interact with the cup 2 or can body 3, may have a shape other than substantially circular. A cup 2 has abottom member 4 with a depending sidewall 5 defining a substantially enclosed space (none shown). The end of the cup opposite thebottom member 4 is open. - The
can bodymaker 10 includes a housing assembly 11, areciprocating ram assembly 12, a drive mechanism 14, a die pack 16, a redraw assembly 18, acup feeder 20 and adomer assembly 22. Each of the elements identified above are coupled to the housing assembly 11. In an exemplary embodiment, the drive mechanism 14 includes acrank assembly 30 including a reciprocating crankarm 32. The drive mechanism 14 is operatively coupled to theram assembly 12 and is structured to, and does, impart a reciprocating motion to a ram body 50, discussed below. As is known, in each cycle thecup feeder 20 positions a cup 2 in front of the die pack 16 with the open end facing theram assembly 12. The die pack 16 defines a passage 17 through a number of dies (not shown). Thedomer assembly 22 includes a dome member 24 having a domed surface. The center/vertex of the dome member 24 is disposed generally, or substantially, on a line with the ram body longitudinal axis 56, discussed below. Further, thedomer assembly 22 is disposed immediately adjacent the ram body 50 path of travel. When the cup 2 is in position in front of the die pack 16, a redraw sleeve 40 biases the cup 2 against a redraw die 42. As is known, the drive mechanism 14 drives the redraw sleeve 40, e.g., via a number of secondary crank arms (not shown), and is timed so that the redraw sleeve 40 advances just before theram assembly 12 advances. - Generally, the
ram assembly 12 includes the elongated, substantially circular, ram body 50 with aproximal end 52, adistal end 54, and a longitudinal axis 56. The ram bodydistal end 54 includes apunch 58. The ram bodyproximal end 52 is coupled to the drive mechanism 14. The drive mechanism 14 provides a reciprocal motion to the ram body 50 causing the ram body 50 to move back and forth generally along its longitudinal axis 56. That is, the ram body 50 is structured to reciprocate between a retracted, first position and a forward, second position over a path of travel. In the first, retracted position, the ram body 50 is spaced from the die pack 16. In the second, extended position, the ram body 50 extends through the die pack 16 with thepunch 58 disposed immediately adjacent the dome member 24. That is, the cup disposed on thepunch 58 contacts the dome member 24. It is noted that the ram body 50 may be stopped, that is, the drive mechanism 14 may be stopped with the ram body 50 in any position between the first and second positions. Thus, thereciprocating ram assembly 12 advances forward (to the left as shown) passing through the redraw sleeve 40 and engaging the cup 2. The cup 2 is moved through the redraw die 42 and a number of ironing dies (not shown) within the die pack 16. The cup 2 is converted into a can body 3 within the die pack 16. That is, as thepunch 58 carrying the can body 3 passes through the die pack 16, the can body 3 is formed and, more specifically, the can body 3 becomes elongated while the sidewall 5 becomes thinner. At the end of the forming stroke, a dome is formed in thecan bottom member 4 when thecan bottom member 4 engages thedomer assembly 22 and the dome member 24. Further, at the start of the return stroke, the can body 3 is ejected from thepunch 58 by any known method or device such as, but not limited to a stripper device or delivering a compressed gas to the inner side of the can body 3. At the start of the next forming stroke a new cup 2 is disposed in front of the die pack 16 and/or the end of thepunch 58. - In an exemplary embodiment, the ram body 50 is a “reduced length ram body.” As used herein, a “reduced length ram body” has a length of between about 26.0 inches and 36.0 inches. In an exemplary embodiment, the ram body 50 has a length about 34.5 inches. Further, the ram body 50 is a cantilever member. That is, the ram body
proximal end 52 is coupled to the drive mechanism 14, as noted above, and the ram bodydistal end 54 is unsupported. Thus, the ram body 50 does not pass through a ram body bearing assembly, such as, but not limited to a bearing assembly including a bearing and thecan bodymaker 10 does not include a ram body bearing assembly. As used herein a “ram body bearing assembly” means an assembly or device that is structured to, and does, provide more than negligible support to a ram body 50. As used herein, “negligible support” means an upward force of more than about 10% of the weight of the ram body 50. - Further, the ram body 50 is a cantilever member 90 that has a “cantilever length.” As used herein, the “cantilever length” means the length of the cantilever member beyond the support that is closest to the unsupported end. Further, as used herein, an assembly or element that provides negligible support, or insignificant support, does not provide meaningful support to the ram body 50 and, therefore, does not change the “cantilever length” of the ram body 50. As noted above, in the prior art wherein a ram body 50 moved through a bearing assembly B, the cantilever length of the prior art ram body had a dynamic cantilever length. That is, the cantilever length depended upon the length of the ram body 50 extending through the bearing assembly. As the ram body 50 of the exemplary embodiment does not extend through a bearing assembly, the cantilever length of the cantilever member 90 remains constant during the reciprocal motion of the ram body 50.
- Similarly, the ram body 50 is not directly guided by a ram body guide assembly. Thus, the ram body 50 does not pass through a ram body guide assembly, such as, but not limited to a ram body guide assembly including a guide bearing, such as, but not limited to, a hydrostatic/hydrodynamic bearing assembly, and, the
can bodymaker 10 does not include a ram body guide assembly. As used herein, a “ram body guide assembly” means an assembly or device that directly contacts the ram body 50 and is structured to, and does, guide the ram body. As used herein, to “guide” a ram body means to continuously position of the ram body longitudinal axis 56 relative to the die pack 16. As used herein, “continuously position” means that one construct is in contact with another construct and provides more than insignificant support to a ram body 50. As used herein, “insignificant support” means an upward force of more than about 15% of the weight of the ram body 50. Further, as used herein, a “ram body guide assembly” cannot be a “ram body dampening assembly” as defined below. That is, any assembly that supports a ram body cannot be a “ram body dampening assembly.” For example, and as used therein, any support or guide that changes the “cantilever length” of a ram body is not a “ram body dampening assembly.” - Further, in an exemplary embodiment, the ram body 50 does not pass through a ram body seal assembly, and, the
can bodymaker 10 does not include a ram body seal assembly. That is, as the ram body 50 is not lubricated in a manner similar to prior art ram bodies, the ram body 50 does not extend through a seal assembly structured to collect a substantial amount of lubricant. As used herein, a “ram body seal assembly” means an assembly through which a ram body passes and that is structured to remove a substantial amount of coolant and/or lubricant from the ram body 50. A “ram body seal assembly” may provide negligible support or insignificant support to a ram body 50. That is, elements such as, but not limited to, rubber seals in the ram body seal assembly may contact the ram body 50 and thereby provide negligible support or insignificant support to a ram body 50. Such seals, however, are not structured to dampen vibration in a ram body 50. That is, as used herein, a “ram body seal assembly” does not include any construct that is intended to dampen the vibration in a ram body 50. Any effect on ram body 50 vibration is incidental and, as such, a ram body seal assembly is not structured to dampen ram body 50 vibration. Thus, any construct in a “ram body seal assembly” that incidentally dampens vibration of a ram body 50 is not a “dampening member,” as defined below. - In an exemplary embodiment, the
can bodymaker 10 includes a rambody dampening assembly 100, shown inFIGS. 3 and 3A . As used herein, a “ram body dampening assembly” 100 is a construct that is structured to dampen vibration of the ram body 50 during use. A “ram body dampening assembly” 100 does not provide more than negligible support or insignificant support to the ram body 50. The rambody dampening assembly 100 is structured to, and does, dampen vibration in the ram body 50 during operation of thecan bodymaker 10. That is, as noted above, during operation of thecan bodymaker 10 theram assembly 12 with a cup 2 disposed over thepunch 58 engages the dome member 24 which causes the ram body 50 to vibrate. This vibration is dampened by the rambody dampening assembly 100, i.e., a dampeningmember 104, discussed below. That is, as used herein, a “dampening member” is a construct structured to dampen the vibration in an elongated body that passes through, or adjacent, the “dampening member.” To “dampen,” as used herein, means to reduce the amplitude of a vibration in a vibrating construct. A “dampening member” is structured to, and does, provide “dampening engagement” with a vibrating elongated body. As used herein, “dampening engagement” (or to “dampeningly engage”) means a rapid and intermittent contact with various locations about the perimeter of a vibrating element and, following the dampening of the vibrations, may also contact the element but does not provide more than negligible support or insignificant support to the ram body 50. As used herein, “dampening engagement” does not provide support to the elongated body. Conversely, if an element does provide support to an elongated body, as used herein, it does not provide “dampening engagement” to the elongated body and cannot be a “dampening member” as defined above. Further, “dampening” includes both “active” and “passive” dampening. As used herein, “active” dampening means that the “dampening assembly” is structured to, and does, detect the vibration and responds with a counter-vibration or other motion that dampens the vibration. Stated alternately, “active” dampening means that energy is expended in a manner that reduces vibration. As used herein, such a dampening assembly is identified as an “active dampening assembly.” Thus, an “active dampening assembly” is structured to, and does, expend energy in a manner that reduces vibration in a vibrating element or assembly. Further, a “dampening member” in an “active dampening assembly” is identified herein as an “active dampening member.” Conversely, “passive” dampening means that the “dampening assembly” is structured to, and is, acted upon by the vibrating member or element but does not expend energy in a manner that reduces vibration. That is, as used herein, a “passive dampening assembly” is structured to, and does, reduce vibration in a vibrating element or assembly without expending energy. For example, a dampening assembly that absorbs energy from a vibrating element or assembly and thereby reduces the vibration thereof is a “passive dampening assembly.” Further, a “dampening member” in a “passive dampening assembly” is identified herein as a “passive dampening member.” - In an exemplary embodiment, the rain
body dampening assembly 100 is one of an active dampening assembly or a passive dampening assembly. In the embodiment shown in the figures, the rambody dampening assembly 100 is a passive dampening assembly. Thus, during the operation of thecan bodymaker 10, the vibrating ram body 50, rapidly and intermittently contacts the dampeningmember 104 which dampeningly engages the vibrating ram body 50 and reduces the vibration therein. - Further, as used herein, a “dampening member” is structured to, and does, define an “air gap” which, as used herein, is the gap between the “dampening member” and the elongated body which it is structured to dampen when the elongated body is not vibrating. That is, the “air gap” only exists when the elongated body is not vibrating and disposed immediately adjacent the “dampening member.” Thus, when the vibrating elongated body is a ram body 50, when the can bodymaker is not in operation and when the ram body 50 extends through the dampening
member 104, there is an “air gap.” It is further noted that, as used herein, an “air gap” does not exist when the elongated body is not disposed in or immediately adjacent the “dampening member.” Thus, when the ram body 50 is in, or close to, the retracted, first position and is not disposed through, or adjacent, the dampeningmember 104, there is no “air gap” as defined herein. In an exemplary embodiment, the dampeningmember 104 includes a generally torus shapedbody 105 that includes a generallycircular passage 108 structured to allow the ram body 50 to pass therethrough. When the drive mechanism is stopped, e.g., for maintenance, with the ram body 50 extending through the dampeningmember passage 108, the dampeningmember passage 108 is between about 0.005 inch and 0.001 inch, or about 0.0025 inch, larger than the cross-sectional area of the ram body 50. Thus, when the ram body 50 is stationary, the dampeningmember 104 is structured to, and does, define an air gap about the ram body 50. That is, in the embodiment discussed above, the “air gap” between the outer surface of the ram body 50 and the inner surface of the dampeningmember body 105 is between about 0.005 inch and 0.001 inch, or about 0.0025 inch. - The ram
body dampening assembly 100 is disposed adjacent the ram body 50 path of travel. In an exemplary embodiment, the rambody dampening assembly 100 includes ahousing 102 and the dampeningmember 104. In an exemplary embodiment, the ram body dampeningassembly housing 102 defines apassage 106 through which the ram body 50 extends. That is, the ram body dampeningassembly housing 102 is disposed about the ram body 50 path of travel. In an alternate embodiment, not shown, the ram body dampeningassembly housing 102 does not define a passage and is disposed adjacent the ram body 50 path of travel. The ram body dampeningassembly housing passage 106 is considerably larger than the cross-sectional area of the ram body 50. That is, the ram body dampeningassembly housing passage 106 is sufficiently large to prevent contact between the ram body 50 and the ram body dampeningassembly housing 102 during normal operation of thecan bodymaker 10. - As noted above, an exemplary dampening
member 104 includes a generally torus shapedbody 105 that defines a generallycircular passage 108 structured to allow the ram body 50 to pass therethrough. In an exemplary embodiment, the dampeningmember body 105 is made from a resilient material such as, but not limited to, polyether ether ketone (PEEK). The dampeningmember passage 108 substantially corresponds to the cross-sectional area of the ram body 50. That is, the dampeningmember passage 108 is slightly larger than the cross-sectional area of the ram body 50 and is sized so that an air gap exists between the ram body 50 and the dampeningmember passage 108 when the ram body 50 extends through the dampeningmember passage 108 but not when thecan bodymaker 10 is in operation. That is, during operation of thecan bodymaker 10, the ram body 50 vibrates causing the ram body 50 to contact the dampeningmember 104 so that the air gap cannot be measured. In this configuration, the dampeningmember 104 is disposed immediately adjacent the ram body 50 path of travel. In an alternate embodiment, not shown, the dampening member body does not encircle the ram body 50. In another alternate embodiment, not shown, an inner surface of the dampeningmember body 105, i.e., the surface immediately adjacent the ram body 50 path of travel, includes a number of protrusions structured to dampeningly engage the ram body 50. - The dampening
member 104 is coupled, directly coupled, or fixed to the ram body dampeningassembly housing 102 and, as shown, in the ram body dampeningassembly housing passage 108. The ram body dampeningassembly housing 102 is disposed about (i.e., encircling) or adjacent the ram body 50 path of travel. In this configuration, the ram body 50 passes through the ram body dampeningassembly housing passage 106 and the dampeningmember passage 108. Stated alternately, the ram body 50 path of travel extends through said dampeningmember passage 108. Further, in this configuration and in an exemplary embodiment, the rambody dampening assembly 100, i.e., the dampeningmember 104, does not support the ram body 50. That is while at rest, i.e., when thecan bodymaker 10 is not in operation, the ram body 50 does not contact the dampeningmember 104 even when the ram body 50 is in the forward, second position. Stated alternately, the ram body longitudinal axis 56 is aligned with the dampeningmember passage 108 so that, when thecan bodymaker 10 is not in operation, i.e., when the ram body 50 is stationary, and when the ram body 50 extends through the dampeningmember passage 108, the ram body 50 does not contact the dampeningmember 104. Stated alternately, the ram body 50 is, in an exemplary embodiment, a “non-active ram body” 50A. As used herein, a “non-active ram body” 50A means a ram body 50 that is stationary, and positioned to extend through the dampeningmember passage 108. Thus, in an exemplary embodiment, a non-active ram body does not contact the dampeningmember 104. - In an exemplary embodiment, the ram body 50 has a coolant applied thereto. In this embodiment, the ram
body dampening assembly 100 also includes a number ofseals 120 structured to remove coolant from the ram body 50. The ram body dampening assembly seals 120 do not support the ram body 50 but, in an exemplary embodiment, provide negligible support or insignificant support to the ram body 50. The ram body dampening assembly seals 120 are spaced from the dampeningmember 104. In this configuration, and when the ram body 50 extends through the ram body dampening assembly seals 120 and the dampeningmember 104, the ram body dampening assembly seals 120 and the dampeningmember 104 are structured to, and do, form anenvelope 128 about the ram body 50. - The ram
body dampening assembly 100, in an exemplary embodiment, also includes apurge air system 140. Thepurge air system 140 is disposed, or partially disposed in the ram body dampeningassembly housing 102 and includesconduits 142 having a number ofinlets 144 disposed adjacent the dampeningmember 104 and the ram body 50 path of travel. Thepurge air system 140 also includes adrain outlet 146. Thepurge air system 140 is structured to, and does, provide pressurized gas, such as, but not limited to, air, that expels collected coolant via thedrain outlet 146. That is, the purge air system inlets 144 anddrain outlet 146 are disposed in theenvelope 128. Thepurge air system 140 is structured to, and does, provide a pressurized fluid to theenvelope 128. The pressurized fluid in theenvelope 128 causes coolant and other matter on the ram body 50 to be expelled via thedrain outlet 146. - The ram
body dampening assembly 100, in an exemplary embodiment, also includes anemergency stripper 150. Theemergency stripper 150 includes abody 152 disposed immediately adjacent the ram body 50 path of travel. If a can body 3 contacts theemergency stripper body 152 during the ram body 50 return stroke, theemergency stripper body 152 engages the can body and prevents the can body 3 from continuing to move with the ram body 50. This action removes the can body 3 from the ram body 50 as the ram body moves backward through the rambody dampening assembly 100. - While specific embodiments of the invention have been described in detail, it will be appreciated by those skilled in the art that various modifications and alternatives to those details could be developed in light of the overall teachings of the disclosure. Accordingly, the particular arrangements disclosed are meant to be illustrative only and not limiting as to the scope of invention which is to be given the full breadth of the claims appended and any and all equivalents thereof.
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/774,015 US20200156136A1 (en) | 2018-01-03 | 2020-01-28 | Dampening assembly for can bodymaker ram |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/860,702 US10589334B2 (en) | 2018-01-03 | 2018-01-03 | Dampening assembly for can bodymaker ram |
US16/774,015 US20200156136A1 (en) | 2018-01-03 | 2020-01-28 | Dampening assembly for can bodymaker ram |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US15/860,702 Continuation US10589334B2 (en) | 2018-01-03 | 2018-01-03 | Dampening assembly for can bodymaker ram |
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US20200156136A1 true US20200156136A1 (en) | 2020-05-21 |
Family
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US15/860,702 Active 2038-06-07 US10589334B2 (en) | 2018-01-03 | 2018-01-03 | Dampening assembly for can bodymaker ram |
US16/774,015 Abandoned US20200156136A1 (en) | 2018-01-03 | 2020-01-28 | Dampening assembly for can bodymaker ram |
Family Applications Before (1)
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US15/860,702 Active 2038-06-07 US10589334B2 (en) | 2018-01-03 | 2018-01-03 | Dampening assembly for can bodymaker ram |
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US (2) | US10589334B2 (en) |
EP (1) | EP3735329A4 (en) |
JP (2) | JP7068466B2 (en) |
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US10589334B2 (en) * | 2018-01-03 | 2020-03-17 | Stolle Machinery Company, Llc | Dampening assembly for can bodymaker ram |
Family Cites Families (25)
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US3735629A (en) | 1970-06-11 | 1973-05-29 | Standun | Apparatus for forming one piece metallic can bodies |
US3825270A (en) * | 1972-05-09 | 1974-07-23 | Standun | Wiper seal for apparatus such as metallic can body formers |
US3916499A (en) | 1975-01-09 | 1975-11-04 | Chambersburg Eng Co | Hydraulic bearing mounting press |
US4173138A (en) | 1977-10-28 | 1979-11-06 | Standun, Inc. | Can bodymaker having improved ram support and drive |
JPS5888055U (en) * | 1981-12-09 | 1983-06-15 | 東洋製罐株式会社 | Sealing device |
US4530228A (en) | 1983-03-21 | 1985-07-23 | National Can Corporation | Apparatus for producing seamless container bodies |
EP0248094B1 (en) * | 1986-05-28 | 1991-08-14 | Ball Corporation | Apparatus for supporting a body for reciprocal movement |
GB2181082B (en) * | 1985-10-04 | 1990-02-07 | Metal Box Plc | Production of metal cans |
US4934167A (en) | 1987-07-01 | 1990-06-19 | Adolph Coors Company | Can body making apparatus |
NL8701623A (en) * | 1987-07-10 | 1989-02-01 | Hoogovens Groep Bv | METHOD AND APPARATUS FOR WALL-STRETCHING A ONE-PIECE BUSH BODY, AND BODY FORMED THEREFORE |
EP0460112A4 (en) | 1989-02-27 | 1992-03-04 | Adolph Coors Company | Can body making apparatus |
US5154075A (en) | 1990-09-07 | 1992-10-13 | Coors Brewing Company | Can body maker with magnetic ram bearing and domer |
US5145075A (en) * | 1990-10-15 | 1992-09-08 | Bucyrus-Erie | Boom point construction |
JPH10511045A (en) * | 1994-08-23 | 1998-10-27 | セキュア コーポレイション | Ram Wiping Unit of Can Body Manufacturing Equipment |
US5775160A (en) | 1997-04-30 | 1998-07-07 | Aluminum Company Of America | Redraw mechanism for can body maker apparatus |
US7434442B2 (en) | 2006-08-16 | 2008-10-14 | Werth Advanced Packaging Innovations, Ltd. | Container bodymaker |
GB0624337D0 (en) | 2006-12-06 | 2007-01-17 | Crown Packaging Technology Inc | Ram alignment |
JP5234267B2 (en) * | 2008-09-24 | 2013-07-10 | 東洋製罐グループホールディングス株式会社 | Beverage can molding method and apparatus |
US9550222B2 (en) * | 2012-09-21 | 2017-01-24 | Stolle Machinery Company, Llc | Bodymaker and double action domer assembly with staged piston |
US10160022B2 (en) * | 2012-09-21 | 2018-12-25 | Stolle Machinery Company, Llc | Bodymaker and double action domer assembly with staged piston |
CN105008061B (en) * | 2013-03-12 | 2018-05-15 | 斯多里机械有限责任公司 | Operating mechanism for the body maker being vertically oriented |
US10137490B2 (en) | 2013-08-28 | 2018-11-27 | Stolle Machinery Company, Llc | Outboard hydrostatic bearing assembly for can bodymaker |
EP3038767B1 (en) * | 2013-08-28 | 2021-07-28 | Stolle Machinery Company, LLC | Can bodymaker with an outboard hydrostatic bearing assembly |
CN105473250B (en) * | 2013-08-28 | 2018-04-17 | 斯多里机械有限责任公司 | For handling the sagging mechanism of percussion hammer and design |
US10589334B2 (en) * | 2018-01-03 | 2020-03-17 | Stolle Machinery Company, Llc | Dampening assembly for can bodymaker ram |
-
2018
- 2018-01-03 US US15/860,702 patent/US10589334B2/en active Active
- 2018-12-27 WO PCT/US2018/067603 patent/WO2019135970A1/en unknown
- 2018-12-27 JP JP2020535232A patent/JP7068466B2/en active Active
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JP7068466B2 (en) | 2022-05-16 |
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CN115519044A (en) | 2022-12-27 |
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US10589334B2 (en) | 2020-03-17 |
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JP2022105541A (en) | 2022-07-14 |
BR112020013514A2 (en) | 2020-12-01 |
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EP3735329A1 (en) | 2020-11-11 |
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