US3628592A - Flaskless squeeze molding machine - Google Patents

Flaskless squeeze molding machine Download PDF

Info

Publication number
US3628592A
US3628592A US783893A US3628592DA US3628592A US 3628592 A US3628592 A US 3628592A US 783893 A US783893 A US 783893A US 3628592D A US3628592D A US 3628592DA US 3628592 A US3628592 A US 3628592A
Authority
US
United States
Prior art keywords
flask
pattern plate
frame
plate
rods
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 - Lifetime
Application number
US783893A
Other languages
English (en)
Inventor
Russell M Taccone
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.)
Bangor Punta Operations Inc
Original Assignee
Bangor Punta Operations Inc
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 Bangor Punta Operations Inc filed Critical Bangor Punta Operations Inc
Application granted granted Critical
Publication of US3628592A publication Critical patent/US3628592A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/10—Compacting by jarring devices only
    • B22C15/12—Compacting by jarring devices only involving mechanical gearings

Definitions

  • ABSTRACT This disclosure relates to molding machines.
  • lnt.Cl B22c17/08 The molding machine forms a mold by squeezing a molding Field of Search 40, medium located in the molding hamber between the yen].
  • References Cited with the bottom pattern plate are tilted to a horizontal orienta- UNITED STATES PATENTS tion. The mold is pushed out of the flask onto a pouring con- 2,937,421 5/1960 Taccone 164/207 X veyor.
  • a molding chamber, bottom pattern plate and guidance system are mounted on trunnions in the machine.
  • the molding chamber, commonly called flask, and pattern plate are normally in position under an aerator connected to the discharge chute of an overhead sand hopper, where the flask is filled with sand.
  • a removable section below the aerator is shifted to bring a top pattern or backup plate in position directly above the flask.
  • the flask and bottom pattern plate are elevated to engage the top pattern and the bottom pattern continues up inside the flask, forced by a squeeze cylinder mounted in the base of the machine, and compressing the green sand between the two pattern plates.
  • the mold thus formed is stripped from the top pattern, and flask, mold and bottom pattern rotated through an arc of 90 to the discharge position, when the mold is forced from the flask into matching engagement with the previously made mold on the receiving platform.
  • the finished molds can be poured on the receiving platform or removed to some other suitable place for pouring.
  • Another object of the invention is to provide a molding machine that is simple in construction, economical to manufacture, and simple and efficient to use.
  • Another object of the invention is to provide an improved molding machine.
  • Another object of the invention is to provide an improved flaskless molding machine wherein molds can be made and deposited on a receiving platform for pouring.
  • Another object of this invention is to provide a flaskless molding machine whereintwo adjacent molds on the receiving platform form a mold cavity and succeeding and preceding molds support said molds for pouring.
  • FIG. 1 is an isometric view of a machine according to the invention.
  • FIG. 2 is a longitudinal cross-sectional view of the machine shown in FIG. 1.
  • FIGS. 3, 4, and 5 are partial longitudinal cross-sectional views of the machine shown in FIGS. 1 and 2 showing the machine in three different stages of the formation of the mold.
  • FIG. 6 is a view of the machine shown in FIGS. I through 5 showing the machine with a flask rotated 90 for discharge.
  • FIG. 7 is a view similar to FIG. 6 showing the mold being ejected onto a conveyor.
  • FIG. 8 is a view similar to FIGS. 2 through 5 showing the flask filled with sand just before the pattern plate is lowered into place prior to the stageof molding shown in FIG. 3.
  • FIG. 9 is a view of the brake comprising a part of the machine.
  • FIG. 10 is a longitudinal cross-sectional view of an optional feature of the invention.
  • FIG. 11 is a top view of the result of the use of one method of the optional feature shown in FIG. 10.
  • the machine shown has a fixed frame 10 and a movable frame 18.
  • the machine further has the trunnion frame which is rotatably supported on the fixed frame by means of the trunnions 21 which allow the movable frame, the trunnion frame, flask and stripping rods 22 to be swung from the vertical position shown in FIGS. 1 through 5 to the horizontal position shown in FIGS. 6 and 7.
  • the stripping rods 22 are slidably received in the lifting base 26 and are fixed to the retraction plate 32.
  • the stripping rods 22 are likewise received in bearings shown in the bottom 44 of the flask 19.
  • the flask 19 is fixed to the upper end of the movable frame 18.
  • the center column 29 is fixed to the bottom pattern plate l4 and it is slidably received in the bottom 44 of the flask.
  • the center column is likewise slidably received in the trunnion frame 20.
  • the brake 14 is fixed to the movable frame by means of frame element 40 and the brake slidably receives the center column 29.
  • the brake as shown in FIGS. 8 and 9 frame has the frictional elements shown which are made up of the resilient fluid-receiving members 42 which may be inflated by fluid and have the concave frictional members 41 on their inside surface.
  • the frictional members 41 comprises a plurality of individual elements mounted for movement radially inwardly and outwardly of the brake frame. This radial movement allows the frictional members to move into and out of contact with the center column.
  • the frictional surface 41 can be brought into engagement with outer periphery of the center column 29 to either lock it in position or to reduce the rate of its descent.
  • the fixed main cylinder 16 is fixed to the base 12 and it has a piston rod 17 in it which engages the lower end of the center column 29.
  • the cylinder I6 can be used to raise the pattern plate 14 up in the flask to thereby compress sand between the lower and upper pattern plate.
  • the rate of descent of the pattern plate can be determined by the amount of friction caused by the force of fluid in the inflatable members 42.
  • the flask may be lifted relative to the pattern plate by means of fluid pressure in cylinders 27 that act on piston rods 28 to elevate the movable frame 18 and with it, flask 19.
  • the flask 19 can be brought up into engagement with the upper pattern plate 13 and the locating pins 23 will be received in holes 24 so that the sand 25 in the flask can be compressed.
  • Fluid to the inflatable members 42 will be inserted through the air line 31 or other suitable source of fluid under pressure.
  • the upset 33 is fixed to the head 11 as shown in FIG. 2 and the head III is carried backward and forward on the frame 10 by means of an actuating cylinder 39 and a suitable piston rod in it.
  • actuating cylinder 39 When the head is moved to the position shown in FIG. 2, sand may be dropped through the hopper 37 and past the propeller blades 35 (driven by motors 36) which will aerate the sand and let it fall freely into the flask 19 around the patterns 45 on the pattern plate.
  • the cylinder 39 will move the head lll to bring the upper pattern plate 13 over the flask to the position shown in FIG. 8.
  • the flask will then be elevated by means of cylinders 27 and piston rods 28 to bring the pattern plate to the position shown in FIG. 3.
  • the cylinder 16 will then actuate the piston rod 17 to act through the center column 29 to force the lower pattern plate up to the position shown in FIG. 4, thus compressing the sand between the upper and lower pattern plates.
  • the upper cylinders 43 may then be actuated so that the flask I9 is moved downward.
  • the flask 19 is provided with a pair of flanges 60 which are engaged by upper cylinder 43 for the purpose of moving the flask downwardly.
  • the flask l9, trunnion frame 20, stripping rods 22 and lifting base 26 are then swung to a position shown in FIG. 6.
  • a tilting cylinder 62 cooperates with the trunnion frame through a suitable linkage (not shown) for tilting he trunnion frame and the movable frame from the vertical position to the horizontal position shown in FIG. 6.
  • the cylinder 38 then advances with its hook 46 into engagement with the retraction plate 32.
  • the cylinder 38 will then push the mold sand 25 into engagement with the finished sand mold 25 on the conveyor 47.
  • the conveyor 47 is provided with upstanding sidewalls 64 which serve to align the molds on the conveyor with respect to each other in cooperation with the surface of the molding conveyor.
  • the flask 19 can then be retracted by the cylinder 38 to the position shown in FIG. 6 and the trunnion frame swung to bring the flask 19 under the head 11.
  • a suitable track 34 will be supported on the machine to carry the head 11 and the upset 33.
  • the flask 19 which is fixed to the movable frame 18 is positioned in a vertical orientation to receive sand 25 from a hopper 37.
  • a pattern plate 45 is located in the bottom of the flask for imparting the desired cavity to the bottom face of the mold.
  • a set of propeller blades 35 aerate the sand as it falls into the mold.
  • the upset 33 is mounted for movement together with upper pattern plate 13 on track 34 so that the hopper and the upper pattern plate can be positioned over the flask 19 as desired.
  • a cylinder 39 moves the pattern plate and the upset along the track 34.
  • the flask is fixed to the movable frame 18, and the movable frame and the flask tilt about a trunnion bearing 21 by means of a trunnion frame 20.
  • the movable frame 18 is in turn mounted on the trunnion frame by means of a sliding guide or stripping rods 22 and center column 29.
  • the lower cylinders 27 lift the movable frame 18 and the flask l9 upwardly to register with the upper pattern plate 13. Locating pins 23 on the pattern plate cooperate with receiving holes 24 on the flask to provide for registration of the flask with respect to the pattern plate 13.
  • Locating pins 23 on the pattern plate cooperate with receiving holes 24 on the flask to provide for registration of the flask with respect to the pattern plate 13.
  • the main cylinder 16 engages the center column 29 by means of piston rod 17 (FIG. 4) to compress the sand and to form a mold.
  • the upper cylinders 43 cooperate with flanges 60 on the sides ofthe flask, to lower the movable frame, i.e., to move the sand mold downwardly from the upper pattern plate.
  • the lower cylinders 27 are used to control movement of the movable frame in cooperation with upper cylinders 43.
  • the brake 15 remains locked with respect to the center column to hold the bottom pattern'plate in position with respect to the sand mold.
  • the trunnion frame together with the movable frame is tilted from the vertical to the horizontal by means of a tilting cylinder 62 shown in FIG. 1.
  • the trunnion frame 20 again remains stationary and the movable frame 18 slides on stripping rods 22 with respect to the trunnion frame 20 for the purpose of advancing the flask 19 toward the receiving conveyor 47.
  • a cylinder 38 equipped with a hook 46 engages the retraction plate 32 and pushes the movable frame 18 toward the receiving conveyor. Of course, during this movement the brake 15 is released.
  • the actuating cylinder 38 moves the guide rods 22 and the bottom pattern plate 13 through the flask 19 for pushing the sand mold onto the receiving conveyor 47.
  • Upstanding sidewalls 64 cooperate with the surface 65 of the receiving conveyor for aligning adjacent molds.
  • the cylinder 38 retracts the bottom pattern plate into the flask and tilting cylinder 62 moves the trunnion frame together with the movable frame to a vertical orientation for a repetition of the machine operation.
  • FIGS. and 11 illustrate a modification according to the present invention in which the sand 25 in the mode 19 is compressed by the use of blocks or rams 48 and 51 strategically positioned respectively in the sidewall and top pattern plate 13 of the molding chamber; Suitable cylinders 49 and 52 actuate the blocks 48 and 51 for compressing the sand.
  • FIG. 11 is a fragmentary plan view showing the positioning of the compression rams 51 and strategic location with respect to the top pattern. Actuation of the compression rams 48 and 51 may take place during or after the compression stroke of the bottom pattern plate described above.
  • a molding machine comprising a fixed frame
  • a molding head having a top pattern plate attached to it
  • a machine for forming molds comprising:
  • stripping rods connected to the second pattern plate for guiding the movement thereof, said stripping rods being slidably mounted with respect to said trunnion frame and said movable frame,
  • a machine for forming molds comprising:
  • a brake means mounted on the movable frame
  • rods being further slidably mounted with respect to the movable frame
  • a locking frame is attached to said movable frames
  • said stripping rods being slidably received in said cushion frame
  • said means on said lower pattern plate adapted to be engaged by said cylinder comprising a center column attached to said bottom pattern plate and extending through said locking means
  • said locking means comprises a frictional member slidably engaging said center column and an inflatable member extending around said frictional member and means to inflate said inflatable member for forcing said frictional member into engagement with said column whereby said column can be held in fixed position relative to said trunnion frame.
  • said upper cylinders being adapted to engage means on said flask for forcing it downward toward said elevating cylinders.
  • the flask has a bottom plate adjacent the second pattern plate
  • the movable frame has a lift plate, connected to its lower portion, and wherein said rods are slidably mounted with respect to said flask bottom plate and the lift plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
US783893A 1968-12-16 1968-12-16 Flaskless squeeze molding machine Expired - Lifetime US3628592A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78389368A 1968-12-16 1968-12-16

Publications (1)

Publication Number Publication Date
US3628592A true US3628592A (en) 1971-12-21

Family

ID=25130730

Family Applications (1)

Application Number Title Priority Date Filing Date
US783893A Expired - Lifetime US3628592A (en) 1968-12-16 1968-12-16 Flaskless squeeze molding machine

Country Status (4)

Country Link
US (1) US3628592A (enrdf_load_stackoverflow)
JP (1) JPS529604B1 (enrdf_load_stackoverflow)
DE (1) DE1962549A1 (enrdf_load_stackoverflow)
GB (1) GB1296850A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807483A (en) * 1971-01-08 1974-04-30 E Buhler Methods and apparatus for producing sand molds
US3838731A (en) * 1971-04-15 1974-10-01 Sherwin Williams Co Horizontal stack foundry molding machine with indexing carriage
US4437507A (en) 1981-08-11 1984-03-20 Seeley Robert J Molding machine
US4673020A (en) * 1983-10-21 1987-06-16 Equipment Merchants International Inc. Foundry molding machine and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7013294B2 (ja) 2018-03-19 2022-01-31 キオクシア株式会社 メモリシステム

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937421A (en) * 1958-12-12 1960-05-24 Taccone Pneumatic Foundry Equi Machine for making molds for centrifugal castings
US3008199A (en) * 1957-08-30 1961-11-14 Jeppesen Vagn Aage Method of producing casting molds and a plant for carrying out the said method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3008199A (en) * 1957-08-30 1961-11-14 Jeppesen Vagn Aage Method of producing casting molds and a plant for carrying out the said method
US2937421A (en) * 1958-12-12 1960-05-24 Taccone Pneumatic Foundry Equi Machine for making molds for centrifugal castings

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807483A (en) * 1971-01-08 1974-04-30 E Buhler Methods and apparatus for producing sand molds
US3838731A (en) * 1971-04-15 1974-10-01 Sherwin Williams Co Horizontal stack foundry molding machine with indexing carriage
US4437507A (en) 1981-08-11 1984-03-20 Seeley Robert J Molding machine
US4673020A (en) * 1983-10-21 1987-06-16 Equipment Merchants International Inc. Foundry molding machine and method

Also Published As

Publication number Publication date
DE1962549A1 (de) 1970-07-30
JPS529604B1 (enrdf_load_stackoverflow) 1977-03-17
GB1296850A (enrdf_load_stackoverflow) 1972-11-22

Similar Documents

Publication Publication Date Title
CN110814284B (zh) 活塞环铸造工艺
CN111906279B (zh) 一种能够连续工作的铸造设备
US3828840A (en) Cyclicly-operable machine adapted to produce and assemble cope and drag mold parts
US4463794A (en) Apparatus for producing containerless sand molds
US7654302B2 (en) Method and apparatus for molding an upper and a lower mold having no flask, and a method for replacing a match plate used therefor
US3709282A (en) Molding machine
US3628592A (en) Flaskless squeeze molding machine
US3516475A (en) Molding method and apparatus
US3878881A (en) Method for producing and assembling cope and drag mold parts
US3736978A (en) Mold forming apparatus with flask having opposed shoulder portions
US3760866A (en) Apparatus for making sand molds
US4699199A (en) Automated mold making system
CA2600583A1 (en) Concrete block press
JP2006315012A (ja) 鋳枠無し上・下鋳型の造型方法
US3695339A (en) Mold forming apparatus
USRE28735E (en) Cyclicly-operable machine adapted to produce and assemble cope and drag mold parts
US3068537A (en) Foundry system and apparatus
US3813076A (en) Concrete plank mold for a molding machine
CN220005988U (zh) 一种粉末冶金成型模具
JP4341021B2 (ja) パターンプレートの再使用方法及び無枠式鋳型造型機
CN110814302B (zh) 六工位砂型成型机
CN110947919B (zh) 一种脱模机构
US4044818A (en) Apparatus for forming sand molds
US2951270A (en) taccone
EP0865848B1 (en) Pattern plate drawing device