GB318131A - Improvements in foundry moulding machines - Google Patents

Improvements in foundry moulding machines

Info

Publication number
GB318131A
GB318131A GB12602/29A GB1260229A GB318131A GB 318131 A GB318131 A GB 318131A GB 12602/29 A GB12602/29 A GB 12602/29A GB 1260229 A GB1260229 A GB 1260229A GB 318131 A GB318131 A GB 318131A
Authority
GB
United Kingdom
Prior art keywords
plunger
truck
bolt
flask
lever
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.)
Expired
Application number
GB12602/29A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB318131A publication Critical patent/GB318131A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C11/00Moulding machines characterised by the relative arrangement of the parts of same
    • B22C11/02Machines in which the moulds are moved during a cycle of successive operations
    • B22C11/04Machines in which the moulds are moved during a cycle of successive operations by a horizontal rotary table or carrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)

Abstract

318,131. Leyondre, E. Aug, 28, 1928, [Convention date]. Mouding-machines.-In a moulding-machine of the type in which a series of flasks are carried past means for filling, pressing, &c., each pattern plate with its charged flask is pressed against one member of a chain of plates 24, Fig. 3, shaped to correspond to the pattern. A number of pattern plates 7, Fig. 1, and flasks 6 are carried by frames 14 vertically movable, by reason of guides 15, in a table 8 intermittently rotated through 36‹ at each movement. At position I the pattern &c., is prepared by a workman; at II the flask is charged with sand at about III any addition operation may be performed and excess sand removed by a fixed scraper (not shown); at IV the frame 14 is raised by a plunger 36 to compress the sand; at about V another workman applies a false flask 20 and runner; at VI, VII and VIII the operations at II, III, and IV are repeated; between VIII and X the false flask and excess of pressed sand are automatically removed; and at X the mould is removed from the table. The plunger 36 of each press has attached to it two cords 42, 61, Fig. 10, the former passing over pulleys 141 adapted to take up slack to a drum 44 on a hollow shaft 45 carrying drums 64, 46 and the latter passing to the drum 64 over pulleys 65 to 72 of which 69 is on a spring-pressed bolt 32 adapted to lock the tables 8 in the desired positions and 71, 72 are adapted to take up slack. A shaft 52 mounted in the shaft 45 carries a two toothed ratchet 55 and chain wheels 53, 54 connected by chains and wheels 56, 57, 59, to a barrel 13, Fig. 1, and the table 8. The barrel carries the plates 24, against which the sand is pressed, loosely mounted so that when in action they are supported by a fixed abutment 21. Fluid is admitted below the plunger 36 by moving a hand lever 33, Fig. 4, to the right, this being impossible unless spring bolts 31, 32 are in position to lock the barrel 13 and table 8. The lever snaps over and is held by a spring bolt 34. During the upward movement of the plunger 36 the cord 42, Fig. 10, rotates the shaft 45 through 180‹ causing the cord 61 to run idly over the pulleys 65 to 72 and the drum 46 to raise a weight 48, Fig. 8, connected thereto. Also an adjustable spring-pressed rod 39, Fig. 1, is lifted by the frame 14 and acts on a crank lever 41 to withdraw the bolt 34 and release the lever 33 which is returned by a spring 42 to its original position to exhaust the fluid below the plunger 36. During the return the cords move in the reverse direction until a pawl 47, Fig. 8, carried by the drum 46, engages the ratchet 55, which cannot turn as the table 8 is locked by the bolt 32, and arrests the shaft 45 so that the cord 61, Fig. 10, is tightened and withdraws the bolt 32, and. by reason of a connection 78, the bolt 31. The weight 48 then rotates the shafts 52, 45, and so the barrel and table, the slackening of the cord 61 allowing the bolts to drop into the next index holes when they arrive. The removal of the moulds is effected by a plunger 82, Fig. 13, to which is attached cords 114, 115 adapted to rotate a wheel 112 and, through a lost motion device 110, a wheel 106. This drives, through chain gearing, a shaft 104 and a crank disc 127. The shaft 104 carries a drum 101 around which passes a cord 100 for reciprocating a truck 89 on rails 95. Fluid is admitted below the plunger 82 by a lever 136, Fig. 14, which is then held by a catch 80. The plunger lifts the flask and mould by means of adjustable rods 86, 87 engaging the rods 18, 19, Fig. 1. During the rise of the plunger the truck 89 moves from position A to position B, brackets 96 thereon passing below trunnions 97 of the flask and a projection 90 on the truck striking a latch 91 so as to withdraw the catch 80 and allow a spring to return the lever 136 and exhaust fluid below the plunger 82. During the fall of the plunger the truck does' not at first move owing to the device 110 but the trunnions engage the brackets 96; then the truck moves to the right carrying the mould which is kept horizontal by a guide rail until released at position C where, owing to intentional weighting, it rotates as shown by the arrow. At D the lower end is engaged by a rubber roller 119 moved in the same direction but at a decelerating speed by the crank 127 so that the inversion of the mould is completed at E and the mould fixed by a spring bolt 120 on the truck which is actuated by a rail 121, Fig. 14. The truck then moves down an incline and deposits the mould on a plate 139, Fig. 13, with upturned edge 123 and the bolt 120, by engaging a vertical member 124 on the flask, moves this and the plate over a roller table 122 so that the brackets 96 are free from the trunnions 97 and truck is ready for the next operation. If desired, the levers 33 of the two presses and the lever 136 may be moved into the " lifting " position by weight returned levers' 1'29, Fig. 4, connected by a cord 131 so that one handle operates all. If desired the first pressing may be replaced by a shaking operation. In place of plungers electrical means may be used to supply the necessary power.
GB12602/29A 1928-08-28 1929-04-23 Improvements in foundry moulding machines Expired GB318131A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR318131X 1928-08-28

Publications (1)

Publication Number Publication Date
GB318131A true GB318131A (en) 1930-08-25

Family

ID=8889787

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12602/29A Expired GB318131A (en) 1928-08-28 1929-04-23 Improvements in foundry moulding machines

Country Status (1)

Country Link
GB (1) GB318131A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114767396A (en) * 2022-04-14 2022-07-22 中国人民解放军陆军军医大学第一附属医院 Rapidly-detachable field rescue stretcher and use method thereof
CN115570105A (en) * 2022-11-21 2023-01-06 中国航发四川燃气涡轮研究院 Method for manufacturing double-wall turbine blade

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114767396A (en) * 2022-04-14 2022-07-22 中国人民解放军陆军军医大学第一附属医院 Rapidly-detachable field rescue stretcher and use method thereof
CN114767396B (en) * 2022-04-14 2023-11-21 中国人民解放军陆军军医大学第一附属医院 Rapidly detachable field rescue stretcher and application method thereof
CN115570105A (en) * 2022-11-21 2023-01-06 中国航发四川燃气涡轮研究院 Method for manufacturing double-wall turbine blade
CN115570105B (en) * 2022-11-21 2023-05-05 中国航发四川燃气涡轮研究院 Manufacturing method of double-wall turbine blade

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