Feed mechanism for machinery such as metallic can body trimmers
阅读：82发布：2022-01-31
专利汇可以提供Feed mechanism for machinery such as metallic can body trimmers专利检索，专利查询，专利分析的服务。并且A pusher rod having an end vacuum cup is reciprocally forwardly and rearwardly movable telescoping a stationary vacuum tube for engaging the closed end of an article such as a can body with the vacuum cup at a feed station and pushing the can body, open end first, to a working or trimming station for a working or trimming operation followed by vacuum gripping withdrawal of the can body back to the feed station. The pusher rod is reciprocally driven through a surrounding pneumatic cylinder which will partially collapse upon the pusher rod and can body encountering an obstructing force of sufficient magnitude during the pushing phase of the cycling, the cylinder collapse being sensed by increased pneumatic pressure therein for automatically shutting down movement of the pusher rod and exhausting the increased pressure. The end of the vacuum tube within the pusher rod forms a stop engageable by an ejector within the pusher rod vacuum cup, the ejector engaging the vacuum tube stop upon full withdrawal of the pusher rod to eject a trimmed can body from vacuum cup gripping. The ejector movement, in turn, controls vacuum supply from the vacuum tube to the pusher rod vacuum cup opening the vacuum upon the ejector leaving the vacuum tube stop and closing the vacuum upon ejector recontact. Any continued loss of vacuum gripping of the can body is sensed for pusher rod shutdown.，下面是Feed mechanism for machinery such as metallic can body trimmers专利的具体信息内容。
1. In a feed mechanism for transferring articles such as metallic can bodies and the like between generally axially aligned and axially spaced feed and working stations; the combination of: pusher means for moving an article with a closed end trailing axially from said feed station to said working station and back to said feed station including a pusher rod having a vacuum cup at a leading end thereof; means for reciprocally moving said pusher rod in a forward stroke from a withdrawn position with said vacuum cup at a side of said feed station opposite said working station axially through said feed station to said working station and in a return stroke from said working station back through said feed station to said withdrawn position; vacuum supply means for directing a supply of vacuum into said pusher rod vacuum cup; vacuum control means for opening and closing said vacuum supply means immediately adjacent said pusher rod vacuum cup, said vacuum control means including means automatically engaged by said article upon said pusher rod vacuum cup approaching said article at said feed station during said forward stroke for automatically opening said vacuum supply means directing vacuum into said pusher rod vacuum cup and automatically closing said vacuum supply means during completion of said pusher rod return stroke, said pusher rod vacuum cup engaging and pushing and vacuum gripping said article closed end during said pusher rod forward stroke and engaging and vacuum gripping said article closed end during said pusher rod return stroke.
2. A feed mechanism as defined in claim 1 in which ejector means is operably connected to said pusher rod automatically engaged by said article upon said pusher rod vacuum cup approaching said article closed end during said forward stroke and being automatically operable to separate said pusher rod vacuum cup from said article closed end at said feed station during said return stroke, said ejector means at least partially forming said vacuum control means operating said vacuum control means to open said vacuum supply means during engagement of said ejector means by said article closed end in said forward stroke and closing said vacuum supply means during said ejector means separation of said pusher rod vacuum cup and said article closed end in said return stroke.
3. A feed mechanism as defined in claim 1 in which ejector means is axially slideably mounted within said pusher rod vacuum cup movable axially forwardly to an ejecting position and rearwardly to a neutral position said ejector means forming a part of said vacuum control means closing said vacuum supply means in said ejecting position and opening said vacuum supply means in said neutral position, said ejector means being in said ejecting position and engaging said article closed end during an initial portion of said pusher rod forward stroke moving said ejector means rearwardly to said neutral position and opening said vacuum supply means, said ejector means remaining in said neutral position with said pusher rod vacuum cup vacuum gripping said article closed end until said pusher rod once again approaches said withdrawn position, said ejector means moving forwardly to its ejecting position during approach of said pusher rod to its withdrawn position closing said vacuum supply means and engageably ejecting said article from said pusher rod vacuum cup at said feed station.
4. A feed mechanism as defined in claim 1 in which ejector means is axially slideably mounted within said pusher rod vacuum cup movable axially forwardly to an ejecting position and rearwardly to a neutral position, said ejector means forming a part of said vacuum control means closing said vacuum supply means in said ejecting position and opening said vacuum supply means in said neutral position, said ejector means being in said ejecting position and engaging said article closed end during an initial portion of said pusher rod forward stroke moving said ejector means rearwardly to said neutral position and opening said vacuum supply means, said ejector means remaining in said neutral position with said pusher rod vacuum cup vacuum gripping said article closed end until said pusher rod once again approaches said withdrawn position, said ejector means moving forwardly to its ejecting position during approach of said pusher rod to its withdrawn position closing said vacuum supply means and enGageably ejecting said article from said pusher rod vacuum cup at said feed station; and in which ejector stop means is mounted within said pusher rod stationary relative to both said pusher rod and ejector means movements engageable by said ejector means during approach of said pusher rod to its withdrawn position in said return stroke moving said ejector means from its neutral to its ejecting position, said ejector means disengaging from said ejector stop upon movement of said pusher rod away from its withdrawn position during said forward stroke.
5. A feed mechanism as defined in claim 1 in which ejector means is axially slideably mounted within said pusher rod vacuum cup movable axially forwardly to an ejecting position and rearwardly to a neutral position; said ejector means forming a part of said vacuum control means closing said vacuum supply means in said ejecting position and opening said vacuum supply means in said neutral position, said ejector means being in said ejecting position and engaging said article closed end during an initial portion of said pusher rod forward stroke moving said ejector means rearwardly to said neutral position and opening said vacuum supply means, said ejector means remaining in said neutral position with said pusher rod vacuum cup vacuum gripping said article closed end until said pusher rod once again approaches said withdrawn position, said ejector means moving forwardly to its ejecting position during approach of said pusher rod to its withdrawn position closing said vacuum supply means and engageably ejecting said article from said pusher rod vacuum cup at said feed station; in which said vacuum supply means includes a stationary vacuum tube telescoped by said pusher rod with bearing means therebetween guiding said pusher rod in said pusher rod reciprocal movements; and in which stationary ejector stop means is formed at an end of said vacuum tube and having said vacuum supply means extending therethrough and through said pusher rod to said pusher rod vacuum cup, said ejector stop means engaging said ejector means and moving said ejector means from its neutral to its ejecting position upon approach of said pusher rod to its withdrawn position closing said vacuum supply means and forcing axial separation of said pusher rod vacuum cup and said article closed end by ejector means engagement with said article closed end, said ejector stop means disengaging said ejector means upon movement of said pusher rod away from said withdrawn position permitting said engagement of said ejector means with said article closed end and movement of said ejector means from its ejecting to its neutral position opening said vacuum supply means.
6. In a feed mechanism for transferring articles such as metallic can bodies and the like between generally axially aligned and axially spaced feed and working stations; the combination of: pusher means for moving an article with a closed end trailing axially from said feed station to said working station and back to said feed station including a pusher rod having a vacuum cup at a leading end thereof; means for reciprocally moving said pusher rod in a forward stroke from a withdrawn position with said vacuum cup at a side of said feed station opposite said working station axially through said feed station to said working station and in a return stroke from said working station back through said feed station to said withdrawn position; vacuum supply means for directing a supply of vacuum into said pusher rod vacuum cup; vacuum control means for opening and closing said vacuum supply means immediately adjacent said pusher rod vacuum cup, said vacuum control means automatically opening said vacuum supply means directing vacuum into said pusher rod vacuum cup at least at a start of said pusher rod return stroke and automatically closing said vacuum supply means during completion of said pusher rod return stroke, said pusher rod vacuum cup engaging and at least pushing against said article closed end during said pusher rod forward stroke and engaging and vacuum gripping said article closed end at least during said pusher rod return stroke; vacuum sensing means operably connected to said vacuum supply means automatically operable for sensing continued loss of vacuum gripping of said pusher rod vacuum cup with said article closed end during said vacuum supply means being open.
7. A feed mechanism as defined in claim 6 in which ejector means is operably connected to said pusher rod automatically engaged by said article upon said pusher rod vacuum cup approaching said article closed end during said forward stroke and being automatically operable to separate said pusher rod vacuum cup from said article closed end at said feed station during said return stroke, said ejector means at least partially forming said vacuum control means operating said vacuum control means to open said vacuum supply means during engagement of said ejector means by said article closed end in said forward stroke and closing said vacuum supply means during said ejector means separation of said pusher rod vacuum cup and said article closed end in said return stroke; and in which vacuum sensing means is operably connected to said vacuum supply means automatically operable for sensing continued loss of vacuum gripping of said pusher rod vacuum cup with said article closed end during said vacuum supply means being open.
8. A feed mechanism as defined in claim 6 in which ejector means is axially slideably mounted within said pusher rod vacuum cup movable axially forwardly to and ejecting position and rearwardly to a neutral position, said ejector means forming a part of said vacuum control means closing said vacuum supply means in said ejecting position and opening said vacuum supply means in said neutral position, said ejector means being in said ejecting position and engaging said article closed end during an initial portion of said pusher rod forward stroke moving said ejector means rearwardly to said neutral position and opening said vacuum supply means, said ejector means remaining in said neutral position with said pusher rod vacuum cup vacuum gripping said article closed end until said pusher rod once again approaches said withdrawn position, said ejector means moving forwardly to its ejecting position during approach of said pusher rod to its withdrwn position closing withdrawn vacuum supply means and engageably ejecting said article from said pusher rod vacuum cup at said feed station; in which ejector stop means is mounted within said pusher rod stationary relative to both said pusher rod and ejector means movements engageable by said ejector means during approach of said pusher rod to its withdrawn position in said return stroke moving said ejector means from its neutral to its ejecting position, said ejector means disengaging from said ejector stop upon movement of said pusher rod away from its withdrawn position during said forward stroke; and in which vacuum sensing means is operably connected to said vacuum supply means automatically operable for sensing continued loss of vacuum gripping of said pusher rod vacuum cup with said article closed end during said vacuum supply means being open.
9. In a feed mechanism for transferring articles such as metallic can bodies and the like between generally axially aligned and axially spaced feed and working stations; the combination of: pusher means for engaging and at least pushing said article at least from said feed to said working station including a pusher rod having a leading end portion engageable with said article; drive means for reciprocally moving said pusher rod with said leading end portion moving axially between said feed and working stations; pressure reacting means operably connected between said drive means and said pusher rod for normally transmitting said reciprocal movement between said drive means and pusher rod and being collapsible upon said pusher rod and article meeting an obstruction force at least above a predetermined magnitude At least during said pusher rod pushing of said article, said pressure reacting means including means automatically operable for positively preventing forces being transmitted therethrough above said predetermined magnitude.
10. A feed mechanism as defined in claim 9 in which sensor means is operably connected to said pressure reacting means for automatically sensing and signaling said collapse of said pressure reacting means occasioned by said pusher rod and article meeting said obstructing force at least above said predetermined magnitude.
11. A feed mechanism as defined in claim 9 in which sensing means is operably connected to said pressure reacting means for automatically sensing and signaling an increased pressure at said pressure reacting means at least above a predetermined pressure and through said signaling interrupting said drive means movement of said pusher rod.
12. A feed mechanism as defined in claim 9 in which said pressure reacting means is pneumatic cylinder means collapsible by compression of gaseous fluid therein; and in which sensor means is operably connected to said pneumatic cylinder means sensing increased pressure of said gaseous fluid therein above a predetermined pressure occasioned by said pusher rod and article meeting said obstructing force at least above said predetermined magnitude and interrupting said drive means movement of said pusher rod, said means of said pressure reacting means automatically dumping gaseous fluid from said pressure reacting means maintaining said gaseous fluid pressure not higher than said predetermined pressure.
13. A feed mechanism as defined in claim 9 in which said pressure reacting means includes a fluid cylinder positioned telescoping said pusher rod, said means of said pressure reacting means automatically dumping fluid from said fluid cylinder for positively preventing forces being transmitted therethrough above said predetermined magnitude.
14. A feed mechanism as defined in claim 9 in which said pressure reacting means includes a fluid cylinder telescoping said pusher rod forming an annular fluid chamber therebetween, an annular piston secured to said pusher rod axially slideably sealed with said cylinder, said cylinder being axially slideably sealed with said pusher rod spaced axially rearwardly of said piston; and in which an abutment stop is secured to said pusher rod normally forwardly abutting said fluid cylinder; and in which said means of said pressure reacting means automatically dumps fluid from said fluid cylinder for postively preventing forces being transmitted therethrough above said predetermined magnitude.
15. In a feed mechanism for transferring articles such as metallic can bodies and the like between generally axially aligned and axially spaced feed and working stations; the combination of: pusher means for engaging and at least pushing said article at least from said feed to said working station including a pusher rod having a leading end portion engageable with said article; drive means for reciprocally moving said pusher rod with said leading end portion moving axially between said feed and working stations; pressure reacting means operably connected between said drive means and said pusher rod for normally transmitting said reciprocal movements between said drive means and pusher rod and being collapsible upon said pusher rod and article meeting an obstruction force at least above a predetermined magnitude; said pusher rod having a vacuum cup at a leading end thereof; said drive means reciprocally moving said pusher rod in a forward stroke from a withdrawn position with said vacuum cup at a side of said feed station opposite said working station axially through said feed station to said working station and in a return stroke from said working station back through said feed station to said withdrawn position; vaccum supply means operably connected to said pusher rod vacuum cup for directing a supply of vacuum into said vacuum cup; vacuum control means opening and closing said vacuum supply means immediately adjacent said pusher rod vacuum cup, said vacuum control means automatically opening said vacuum supply means directing vacuum into said pusher rod vacuum cup at least at start of said pusher rod return stroke and automatically closing said vacuum supply means during completion of said pusher rod return stroke; said pusher rod vacuum cup engaging and at least pushing against an article closed end pushing said article from said feed to said working station during said pusher rod forward stroke and engages and vacuum grips said article closed end pulling said article from said working back to said feed station at least during said pusher rod return stroke; ejector means operably connected to said pusher rod automatically engaged by said article upon said pusher rod vacuum cup approaching said article closed end during said forward stroke and being automatically operable to separate said pusher rod vacuum cup from said article closed end at said feed station during said return stroke, said ejector means at least partially forming said vacuum control means operating said vacuum control means to open said vacuum supply means during engagement of said ejector means by said article closed end in said forward stroke and closing said vacuum supply means during said ejector means separation of said pusher rod vacuum cup and said article closed end in said return stroke; sensor means operably connected to said pressure reacting means for sensing said collapse of said pressure reacting means occasioned by said pusher rod and article meeting said obstructing force at least above said predetermined magnitude.
16. In a feed mechanism for transferring atricles such as metallic can bodies and the like between generally axially aligned and axially spaced feed and working stations; the combination of: pusher means for engaging and at least pushing said article at least from said feed to said working station including a pusher rod having a leading end portion engageable with said article; drive means for reciprocally moving said pusher rod with said leading end portion moving axially between said feed and working stations; pressure reacting means operably connected between said drive means and said pusher rod for normally transmitting said reciprocal movement between said drive means and pusher rod and being collapsible upon said pusher rod and article meeting an obstruction force at least above a predetermined magnitude, said pressure reacting means including fluid cylinder means; dump valve means operably connected to said fluid cylinder means for exhausting at least a portion of fluid from said fluid cylinder means upon said collapse of said fluid cylinder means occasioned by said pusher rod and article meeting said obstructing force at least above said predetermined magnitude.
17. A feed mechanism as defined in claim 16 in which said pressure reacting means is fluid cylinder means; in which dump valve means is operably connected to said fluid cylinder means for exhausting at least a portion of fluid from said fluid cylinder means upon said collapse of said fluid cylinder means occasioned by said pusher rod and article meeting said obstructing force at least above said predetermined magnitude; and in which sensor means is operably connected to said fluid cylinder means for sensing said collapse of said fluid cylinder means occasioned by said pusher rod and article meeting said obstructing force at least above said predetermined magnitude.
18. A feed mechanism as defined in claim 16 in which said pressure reacting means is pneumatic cylinder means collapsible by compression of gaseous fluid therein; and in which dump valve means is operably connected to said pneumatic cylinder means exhausting at least a portion of said cylinder means gaseous fluid from said cylinder means to reduce gaseous fluid pressure within said cylinder means to a predetermined pressure upon said gaseous fluid pressure being increased above said predetermined pressuRe occasioned by said pusher rod and article meeting said obstructing force at least above said predetermined magnitude.
19. A feed mechanism as defined in claim 16 in which said pressure reacting means is pneumatic cylinder means collapsible by compression of gaseous fluid therein; in which dump valve means is operably connected to said pneumatic cylinder means exhausting at least a portion of said cylinder means gaseous fluid from said cylinder means to reduce gaseous fluid pressure within said cylinder means to a predetermined pressure upon said gaseous fluid pressure being increased above said predetermined pressure occasioned by said pusher rod and article meeting said obstructing force at least above said predetermined magnitude; and in which sensor means is operably connected to said pneumatic cylinder means sensing increased pressure of said gaseous fluid therein above said predetermined pressure occasioned by said pusher rod and article meeting said obstructing force at least above said predetermined magnitude and interrupting said drive means movement of said pusher rod.
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