US3682236A - Automatic molding plant with vertically spaced conveying paths - Google Patents

Automatic molding plant with vertically spaced conveying paths Download PDF

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Publication number
US3682236A
US3682236A US97123A US3682236DA US3682236A US 3682236 A US3682236 A US 3682236A US 97123 A US97123 A US 97123A US 3682236D A US3682236D A US 3682236DA US 3682236 A US3682236 A US 3682236A
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Prior art keywords
mold
box
automatic molding
plant according
molding plant
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Expired - Lifetime
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US97123A
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English (en)
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Friedrich B Becke
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Badische Maschinenfabrik GmbH
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Badische Maschinenfabrik GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D33/00—Equipment for handling moulds

Definitions

  • Liftable and/or lowerable end sections are provided at the ends of the conveying paths, and the sidetrack is connected with one conveying path through the loading and unloading stations.
  • Transferable weighting members are placed in the box molds in front of the casting station and are conveyed from the unloading station to the loading station on the traverse carts. After part of the cooling track has been traversed, the mold packs are separated from the box molds, and the box molds are returned to the molding machine while the mold pack traverses the remainder of the cooling track in an undamaged manner.
  • the present invention relates to an automatic molding plant wherein a plurality of traverse bogies or carts conveys the molds, which were transferred from a sidetrack at a loading station and are ready for casting, to the casting station and from there to the unloading station by way of a cooling train or track. Transposable weighting elements are placed on the molds in front of the casting station and are conveyed fromthe unloading station to the loading station on the traverse bogies.
  • mold boxes are separated from the sand pack, whereupon the boxes return to the molding machine, while the undamaged sand pack traverses the second part of the cooling train.
  • the expression mold pack used in the following description means the sand and casting on a pack without a box.
  • Modern molding processes should have low space requirements with respect to the basic area necessary and should be readily adaptable to various cooling periods of different castings. They also should make do with as small a number of boxes or foundry flasks as possible.
  • a conventional molding plant is shown, for example, in U.S. Pat. No. 3,029,482, wherein two rows of box molds are conveyed side-by-side on a horizontal rail conveyor guided in one plane, the closing and emptying of the box molds taking place at certain locations of the loop sections and the box molds traverse the path twice by transposition.
  • traverse tracks are known wherein the traverses are loaded with molds at the molding station, with the weighting being eflected at the casting station. Then, the conveying of the molds through the cooling path until the emptying step is conducted in only one plane, whereas the return of the empty traverse carts,
  • the present invention has an object, among others, of providing an automatic molding plant which has a low requirement of basic area and ofiers an adaptation to various cooling periods. Besides, as few boxes as tioned in difierent horizontal planes and covered with molds are provided in a superimposed relationship. Liftable and/or lowerable end sections are provided at the ends of these conveying paths, and the sidetrack is connected with a conveying track through the unloading station and through the loading station.
  • the traverse bogies are provided with at least two deposit points, and at least one free storage place or area being provided for receiving the mold. At least one further storage place within a U shaped trough is provided for receiving the ejected mold packs and for transporting the weighting elements. At two places, a device is arranged for transposing the weighting elements between the mold and the Ushaped trough of the traverse bogie, and the molds and mold packs conveyed on the traverse bogies determine vertical and parallel planes of circulation, between which the mold packs ejected from the box molds are transferred.
  • Such a simple construction in accordance with the present invention also has, in addition to the sidetrack with the separator, the molding machine and the manipulator, a traverse track for the weighting, pouring, and cooling of the molds extending in several horizontally superimposed rail planes. Since at least two deposit points are provided on the individual traverse trains, the mold packs are placed into the various vertically paralleldisposed track planes by transferring the same.
  • the unloading station can be constructed with a triple traverser carriage disposed displaceable above the conveying path, in such a manner that a mold pack pusher, a weighting element transposer and a box mold transfer member are provided therein.
  • a suitable design of the weighting element transposer can be such that a controllable clamp is provided in the movable triple traverser carriage and engages in a fitting carrying section or profile of the weighting element.
  • mold pack transfer means can be designed in the shape of a swivel chute which can be pivoted between a receiving position when joined to the charging or ejector station and a discharging position in parallel to the longitudinal axis of the traverse bogies and exhibits a conventional feed drive (pivotal transfer means).
  • An advantageous feature of the present invention for possible are required, even in case of long cooling the unlQading Step, Particularly the unloading 'g periods, and the castings are to have the possibility of cooling off uniformly in the undestroyed or undamaged sand pack after ejection from the box. Furthermore, the construction of the plant and the devices employed therein are simple and safe in operation.
  • An essential feature of the present invention resides in that at least two conveying paths which are posibox molds, results from another distribution of the individual operations by conducting the unloading of the mold packs and the transposion of the weighting elements in one station, whereas the transfer of the box mold onto the roller train, the ejection, and the transfer of the mold pack into the trought of the traverser carriage are conducted in a further station.
  • a transfer device is disposed above the track of the box molds in a displaceable, as well as liftable and lowerable manner and is provided with gripper arms pivotable on both sides of the box mold and firmly grasping the box mold due to the contour thereof.
  • a vertical transfer means for the mold pack is realized by providing, above the box mold transfer device, a stationary chute adapted to the dimension of the mold pack with an opening in the bottom above the mold pack ejector having the size of the mold pack and with a transfer orpushing member adapted to the cross section of the chute, the operating path of which corresponds to thedistance from the resides in unilaterally discharging, in the unloading station, the mold pack, which is present in a trough on the traverser carriage, onto a vibration train or track, whereas the box mold travels on the other side after the transfer of the superimposed weighting element for ejecting the mold pack into the zone of the ejector or pusher.
  • the empty box molds travel in the sidetrack to the molding machine and, afier the molding and the production of the molds ready for casting, to the feeding or loading station.
  • the weighting element is transposed onto the U-shaped trough of the traverser carriage at the unloading station and is conveyed thereby to the loading station.
  • the ejected mold pack is pushed into the U-shaped trough of a traverser carriage'by a moldpack transfer means, whereby the mold packs are introduced into the difi'erent, vertically parallel track planes.
  • the weighting element is transposed from the U-shaped trough onto the mold ready for casting.
  • the traverser carriages travel along the casting train, in each case laden with weighting elesection or terminal of the first conveying path, and are thereat transposed into a second conveying path lying BRIEF DESCRIPTION OF THE DRAWING
  • FIG. 1 is a schematic plan view of a molding plant with-a pivotal transfer means according to the present invention
  • FIG. 2 is a plan view similar to FIG. 1 with'a vertical.
  • FIG. 3 is a front view of a triple traverser carriage
  • FIG. 4 is a front view of a vertical transfer means; and FIG. 5 is a view atright'angles to the conveying direction of a traverser carriage with a trough.
  • a conveying path 1 is illustrated which is connected with a sidetrack 4 via a loading station 2 and an unloading station 3.
  • a conveying path 8 with an impact or impulse drive 6 is disposed in a lower horizontal track plane B underneath the conveying path 1 on which traverser carriages 5 or bigies, which are in contactwith each other, are movable with the aid of an impact or impulse drive 7.
  • the traverser carriages 5 can be vertically by means of lowerable and raisable end sections 9, 10.
  • the traverse bogies or carriages 5 have on one side seen in FIG. 5.
  • a weighting element 18 is placed on the box molds 14 on the traverse track or path 1, 8 andiis carried on the path without box molds between stations 2 and 3, by the U-shaped trough 16.
  • the box molds are poured at the casting train 19. After traversing the cooling path in the plane X X, the box molds pass into the zone of the unloading station 3, as shown in FIG. 1, with triple traverser carriage 20 shown in FIG. 3.
  • Numeral 21 denotes a box mold cleaner, and numeral 32 a sand pack ejector.
  • numeral 23' represents a separator
  • numeral 24 represents a ,singleor double-molding machine
  • numeral 77 is a turning means for the drags
  • numeral25 is an assembly or finishing means.
  • the box molds are propelled through the sidetrack 4 by the push cylinder 28 with the counter cylinder 29
  • the transportation of the box molds through stations 2 and 3 is correspondingly effected by push cylinder 31, '26-, cooperating with the counter cylinders 30 and 27,
  • a pivotal transfer means 42 is provided between the ejection ordischarge station 32 and the traverser carriages 5.
  • This pivotal transfer means 42 consists of a swivel chute 39 into which can be ejected, one mold pack 17 with the aid of the impact drive 22. Thereafter, the swivel chute 39 pivots through a right angle and pushes, with the aid of hoisting drive 45, the pusher 44 can be raised to such an extent that it moves past the transposed weighting element during the return of the triple traverser carriage 20.
  • a second pusher with hoisting drive 37 is lowered, after the advancement of the carriage 20, into the range of the molding boxes and pushes the boxes during their return ride onto the roller conveyor 36.
  • the ejection station 32 operates in such a manner that the mold pack remains at its level on the stationary plate or platform 47, whereas the drive 48 with the yoke 49 strips the box olT in the downward direction. During this procedure, the box remains stationary on the roller conveyor section 78 which is lowered against the force of the hoisting drive 79.
  • a mold pack is pushed onto the vibrating track 38 in a station 33 with a double traverser carriage which is provided with the same device as the triple traverser carriage for transposing the weights and transferring the mold packs.
  • a weighting element is transposed from the box mold in the conveying plane X to atrough in the conveying plane Y.
  • the box mold 46 is transferred from the traverser carriage 5 onto the roller conveyor 50, and the trough 51 is lifted by means of the gripper 52 with drive 53 to the level of the U-shaped chute 54.
  • the trough is centered with respect to its position to the traverser carriage by means of pins 55 which fit into corresponding bores 56.
  • a box mold transfer means 57 has runners or small rollers S8 traveling in rails 59 on both sides of the U- shaped chute 54.
  • the transfer means can be lifted with cranks 63 in order to be able to freely transfer especially heavy box molds.
  • the box molds are seized at the trunnions or pins 65 by the gripper arms 66 pivotable by means of the drive 67.
  • the forward movement of all box molds on the roller conveyor 50 and in the gripper 66 is effected by the drive 64.
  • the mold pack is ejected from the box 81 by the butt plate 68 by means of the drive 69 in the upward direction through the box holder 70 and the bottom opening 71 into the U-shaped chute 54. Then, the mold pack is transferred by the butt plate 71 attached to the carriage 73, with the aid of the rack and pinion drive 74 and the motor 75, through the U-shaped chute 54 into the trough 51 which had been raised to the same level. The empty boxes 76 then return to the molding machine 24 by way of the sidetrack 4.
  • the chutes 39, 54 as well as the troughs 16 are adapted to the breadth of the molding sand pack 17 with respect to their breadth, whereas the weighting element 18 is adapted, to the width of the trough 16 with respect to its length as shown in FIG. 5.
  • the mode of operation of the automatic molding plant will now be explained hereinbelow with reference to a plant as shown in FIGS. 1 and 3.
  • the starting point is a traverser carriage 5 present in the unloading station 3 wherein, on the deposit point within the U-shaped trough 16, a mold pack 17 is disposed, while on the 60 storage place 11 there is initially deposited a poured mold 14 composed of a cope l2 and a drag 13 with a weighting element 18 placed thereon.
  • the weighting element 18 is first gripped by the clamping device 35 and lifted with the aid of a hoisting device 43, while a pack pusher 44 is placed into its lowermost position by its associated lifting device 45.
  • the box pusher or ejector 80 is in its upper position. At this point, the triple traverser carriage 20 is first moved to the right. During this step, the mold pack 17 is pushed out of the U-shaped trough 16 5 toward the vibrating train 38, and the weighting ele- 1 5 Thus, a new mold 14 passes into the zone of the ejector drive 48, which releases the mold packs 17 by pressing the box downwardly on the roller conveyor 78 via the yoke 49 against the holding force of the drive 79. The mold pack comes to a standstill on the fixed 20 plate 47 and is moved by the pusher 22 toward the pivotal transfer means 39.
  • the presently empty boxes travel into the box cleaning device 21, then are separated in the separator 23, and fed to the molding machine 24 which molds the copes and drags. Only the 25 drags are turned in the turning unit 77, and then the cores are inserted.
  • the closing or finisher device 25 the finished molds are then produced which are deposited in the loading station 2 by the drive 26 onto the depositing point 11 of a traverser carriage.
  • the weighting element 18 positioned on a trough 16 in the unloading station 3 is placed on the box mold on the storage point 11 by means of similar devices shown in FIG. 3. Thereafter, the molds 14 travel through the casting train 19 for the casting operation.
  • the traverser carriages 5 are lowered at station 9 to the conveying path in plane B and, at the end thereof, are again lifted at station 10, to the conveying path in plane A.
  • the traverser carriage 5 leaves the unloading station 3 with empty depositing points 11, 15 with the weighting element 18 being placed on the U-shaped trough 16.
  • the empty traverser carriage 5 arrives in the zone of the pivotal transfer means 39 which has received the mold pack 17 from the ejector 32 and pushes the pack into the U-shaped trough 16 of the traverser carriage 5 at position 34. Thereafter, the traverser carriage 5 travels with unoccupied depositing points 11 along the conveying path of planes XA to the loading station 2.
  • the mold packs 17 are disposed in FIG. 3. In case longer cooling periods are prescribed,
  • the troughs 16 and traverser carriages 5 can be lengthened for receiving two or more mold packs.
  • the width of the chutes 39, 54 and the troughs 16 is adapted to the dimensions of the mold packs, the mold packs cannot disintegrate, and. the casting remain covered with sand along the entire conveying path and cool off uniformly.
  • I claim: 1. Automatic molding plant including mold boxes; a sidetrack with means for forming molds in said boxes; traverse carriage means forconveying the box molds, which are ready to be cast and transferred from the sidetrack, to a casting train by way of a loading station and from there to an unloading station by way of a cooling path; transferable weighting means adapted to be placed on the molds before the casting train; the cooling path including at least two conveying paths arranged one above the other in horizontal planes for the traverse carriage means conveying the box molds; end
  • the traverse carriage means including at least two depositing sections, wherein at least one depositing section is adapted to receive the box mold and at least one other depositing.
  • section includes a U-shaped trough mounted to receive ejected mold packs and conveys the weighting means.
  • the mold pack transfer means is a pivotal transfer means having a swivel chute pivotable between a receiving position at the connection to an ejection station for ejecting the mold pack and a discharge position where the swivel chute is operatively associated with the U-shaped trough, and the mold pack transfer means having a discharge drive.
  • means for transferring the weighting means between the mold and the U-shaped trough are located at the loading and unloading stations, and the box molds andimold packs conveyed on the traverse car- 1 riage means define vertically parallel conveying planes,
  • riage means define vertically parallel conveying planes
  • mold pack transfer means is a pivotal transfer means having a swivel chute pivotable between,
  • the means for transferring the weighting means includes a selectively controllable clamping device engaging into a corresponding carrying contour of the weighting means;
  • said unloading station includes a first station provided for unloading of the ejected mold packs and transfer of the weighting means, and a second station provided for transpcsing the box molds onto a roller conveyor and the ejection and transfer of the mold packs into the U-shaped troughs of the traverse car riage means.
  • box mold transfer means is located above the conveying path of the box molds in the second station so as to be displaceable, raisable and lowerable.
  • box mold transfer means includes gripper arms pivotable on both sides of the box mold and fittingly grasping the box mold.
  • box mold transfer means is located above the conveying path of the box molds in the second station so as to be displaceable, raisable and lowerable.
  • box mold transfer means includes gripper arms pivotable on both sides of and fittingly grasping the box.
  • a stationary chute is provided above the box mold transfer means and has dimensions corresponding to the mold pack dimensions, an opening corresponding to the size of the mold pack being provided in the bottom of the stationary chute above a mold pack ejector means, and pusher means corresponding to the cross-section of the stationary chute and having a travelling path which corresponds to the distance from the mold pack ejector means to the plane of one of the conveying paths.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
US97123A 1969-12-11 1970-12-11 Automatic molding plant with vertically spaced conveying paths Expired - Lifetime US3682236A (en)

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DE19691962131 DE1962131B1 (de) 1969-12-11 1969-12-11 Automatische Formanlage und Betriebsverfahren hierzu

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US00272750A Expired - Lifetime US3743004A (en) 1969-12-11 1972-07-18 Automatic molding plant operation method

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JP (1) JPS4836807B1 (enrdf_load_stackoverflow)
DE (1) DE1962131B1 (enrdf_load_stackoverflow)
FR (1) FR2070816B1 (enrdf_load_stackoverflow)
GB (1) GB1335400A (enrdf_load_stackoverflow)

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EP0112470A1 (de) * 1982-11-09 1984-07-04 BMD Badische Maschinenfabrik Durlach GmbH Giesserei-Formanlage
US4585049A (en) * 1977-06-22 1986-04-29 Mez Mohelnice Narodni Podnik Method of and apparatus for handling permanent molds
US4589467A (en) * 1984-08-01 1986-05-20 Hunter Automated Machinery Corporation Mold handling system
US5901774A (en) * 1997-01-15 1999-05-11 Hunter Automated Machinery Corporation Linear mold handling system with double-deck pouring and cooling lines
US6145577A (en) * 1997-01-15 2000-11-14 Hunter Automated Machinery Corporation Linear mold handling system
US6571860B2 (en) 1997-01-15 2003-06-03 Hunter Automated Machinery Corporation Two tiered linear mold handling systems
US20080029238A1 (en) * 2006-08-07 2008-02-07 William Allan Hunter Method and apparatus for conveying sand molds to a metal pouring machine
CN101637804B (zh) * 2009-08-25 2011-05-11 齐齐哈尔轨道交通装备有限责任公司 砂箱返回机构、使用该机构的回送方法及真空密封造型线
CN102366831A (zh) * 2011-11-03 2012-03-07 常州市卓信机电设备制造有限公司 有箱双层砂型浇注和冷却输送装置
US8640858B2 (en) 2011-12-13 2014-02-04 Hunter Foundry Machinery Corporation Method and apparatus for conveying sand molds
CN105964953A (zh) * 2016-07-14 2016-09-28 成都桐林铸造实业有限公司 一种呋喃自硬树脂砂铸造自动造型线
CN107008859A (zh) * 2017-04-09 2017-08-04 李金平 一种循环式铁模覆砂生产方法
CN107570695A (zh) * 2017-08-31 2018-01-12 宁夏共享模具有限公司 一种智能铸造系统
CN113118431A (zh) * 2021-04-26 2021-07-16 机械工业第六设计研究院有限公司 较大铸件的自动化造型工艺
CN113135400A (zh) * 2021-04-28 2021-07-20 南昌科勒有限公司 一种工件自动传送设备及工件自动传送方法
CN113828762A (zh) * 2021-08-10 2021-12-24 洛阳托普热能技术有限公司 一种全自动铝水连续生产及输送线

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US4224979A (en) * 1977-10-31 1980-09-30 Mcneil Corporation Automatic foundry system
DE3013579A1 (de) * 1979-04-12 1981-03-26 Stone Wallwork International Ltd., London Verfahren und vorrichtung zum spritzgiessen
JPS56110069U (enrdf_load_stackoverflow) * 1980-01-28 1981-08-26
DE3209161A1 (de) * 1982-03-13 1983-09-22 BMD Badische Maschinenfabrik Durlach GmbH, 7500 Karlsruhe Traversenwagen
DK159598C (da) * 1983-04-18 1991-04-15 Dansk Ind Syndikat Manoevreringsapparat til brug i stoeberianlaeg
DE3829188C2 (de) * 1988-08-29 1993-12-23 Fischer Ag Georg Formverfahren und -einrichtung
DE4226778A1 (de) * 1992-08-13 1994-02-17 Badische Maschf Gmbh Verfahren zum Transportieren von Formkasten und nach dem Verfahren arbeitende Gießerei-Formanlage
RU2183531C2 (ru) * 2000-05-16 2002-06-20 Открытое акционерное московское общество "Завод имени И.А. Лихачева" Устройство для выбивки литейных форм
US6457511B1 (en) * 2000-12-04 2002-10-01 Vulcan Engineering Company, Inc. Apparatus for handling foundry molds
US7476349B2 (en) * 2002-09-20 2009-01-13 Aqua Glass Corporation Method of scheduling the open molding of an article
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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4585049A (en) * 1977-06-22 1986-04-29 Mez Mohelnice Narodni Podnik Method of and apparatus for handling permanent molds
EP0112470A1 (de) * 1982-11-09 1984-07-04 BMD Badische Maschinenfabrik Durlach GmbH Giesserei-Formanlage
US4589467A (en) * 1984-08-01 1986-05-20 Hunter Automated Machinery Corporation Mold handling system
US5901774A (en) * 1997-01-15 1999-05-11 Hunter Automated Machinery Corporation Linear mold handling system with double-deck pouring and cooling lines
US5927374A (en) * 1997-01-15 1999-07-27 Hunter Automated Machinery Corporation Manufacturing sand mold castings
US5971059A (en) * 1997-01-15 1999-10-26 Hunter Automated Machinery Corporation Molding and casting machine
US6145577A (en) * 1997-01-15 2000-11-14 Hunter Automated Machinery Corporation Linear mold handling system
US6571860B2 (en) 1997-01-15 2003-06-03 Hunter Automated Machinery Corporation Two tiered linear mold handling systems
US20030178170A1 (en) * 1997-01-15 2003-09-25 Hunter Automated Machinery Corporation Two tiered linear mold handling systems
US6779586B2 (en) 1997-01-15 2004-08-24 Hunter Automated Machinery Corporation Two tiered linear mold handling systems
US20080029238A1 (en) * 2006-08-07 2008-02-07 William Allan Hunter Method and apparatus for conveying sand molds to a metal pouring machine
US7637303B2 (en) * 2006-08-07 2009-12-29 Hunter Automated Machinery Corporation Method and apparatus for conveying sand molds to a metal pouring machine
CN101637804B (zh) * 2009-08-25 2011-05-11 齐齐哈尔轨道交通装备有限责任公司 砂箱返回机构、使用该机构的回送方法及真空密封造型线
CN102366831A (zh) * 2011-11-03 2012-03-07 常州市卓信机电设备制造有限公司 有箱双层砂型浇注和冷却输送装置
US8640858B2 (en) 2011-12-13 2014-02-04 Hunter Foundry Machinery Corporation Method and apparatus for conveying sand molds
CN105964953A (zh) * 2016-07-14 2016-09-28 成都桐林铸造实业有限公司 一种呋喃自硬树脂砂铸造自动造型线
CN105964953B (zh) * 2016-07-14 2017-11-21 成都桐林铸造实业有限公司 一种呋喃自硬树脂砂铸造自动造型线
CN107008859A (zh) * 2017-04-09 2017-08-04 李金平 一种循环式铁模覆砂生产方法
CN107570695A (zh) * 2017-08-31 2018-01-12 宁夏共享模具有限公司 一种智能铸造系统
CN107570695B (zh) * 2017-08-31 2020-04-07 共享智能装备有限公司 一种智能铸造系统
CN113118431A (zh) * 2021-04-26 2021-07-16 机械工业第六设计研究院有限公司 较大铸件的自动化造型工艺
CN113135400A (zh) * 2021-04-28 2021-07-20 南昌科勒有限公司 一种工件自动传送设备及工件自动传送方法
CN113135400B (zh) * 2021-04-28 2022-08-30 南昌科勒有限公司 一种工件自动传送设备及工件自动传送方法
CN113828762A (zh) * 2021-08-10 2021-12-24 洛阳托普热能技术有限公司 一种全自动铝水连续生产及输送线

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GB1335400A (en) 1973-10-24
FR2070816A1 (enrdf_load_stackoverflow) 1971-09-17
DE1962131B1 (de) 1971-10-28
FR2070816B1 (enrdf_load_stackoverflow) 1974-02-15
US3743004A (en) 1973-07-03
JPS4836807B1 (enrdf_load_stackoverflow) 1973-11-07

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