US1255466A - Molding-machine. - Google Patents

Description

mmwm.

MOLDING MASHINE APPLICATKON FILED FEB. 4. [914-- RENEWED SEPT.4. 39!].

R %55 %66 Patented Feb. 5, 1918.

2 SHEETS-SHEET 1.

@fi'n Q55 D. J. RYAN.

MOLDING MACHINE. [\PFLICAHOH mm H25. 4. 1914'. RENEWED SEPT. 4, :sm.

Patented Feb. 5, 1918.

2 SHEETS-SHUT 2 Jnvenmz';

"DANIEL J. RYAN, O3? CLEVELAND, OHIO.

Specification of Letters Patent.

Patented lFeb. 5, 191.

Application filed February 4, 1914, Serial No. 816,460. Renewed September 4,1917. Serial No. 189,682.

To all about it may concern Be it known that I, DANIEL J. RYAN, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in and Relating to Moldingdi lachines, of which. the following is a specification.

My invention relates to a molding ma chine, more especially to that type of machine in which the flask structure carrying a mold is adapted to be stripped from the. pattern.

One object of the invention is to provide improved mechanism for stripping molds from patterns.

Another object of the invention is to pro vide a machine of this character comprising few parts adapted to operate in a simple manner.

Another object of the invention is to pr0- vide an improved mold stripping mechanism adapted to increase the etliciency and capacity of the molding machine.

Another object of the invention is to provide novel mechanism for actuating and controlling the stripping plate for a molding machine.

Another object of the invention'is to provide, in a machine of this character, one or more members which are movable into position to actuate the st ripping plate for stripping the mold from the patteui.

Another object of the invention is to proride improved stripping mechanism having one or more movable members adapted to be moved into position to strip the mold from the pattern and out of such position to permit free access to the pattern and flask structure and ready assembly and disassembly thereof.

A further object of the invention is to provide automatic means for operating the movable stripping device or devices in cooperation with the movable part of the machine.

A further obiect of the invei'ition is to combine with a molding machine having a rising and falling frame, improved stripping mechanism, which, in cooperation with the rising and falling frame. controls the stripping of the molds from the pattern.

With these and other objects in view, the invention consists in the parts and combination of parts hereinafter described and claimed.

For the purpose of illustrating my invention, I have selected and hereinafter described one construction embodying it.

Figure 1 is a perspectiveview of a molding machine embodying my invention, the parts being broken away.

Fig. 2 is a similar View with the frame or carrier, stripping plate and mold elevated and the stripping members in operative position.

Fig. 3 is a similar view showing the pat tern supporting plate in normal position and the mold stripped from the pattern.

Figs. 4: and 5 are side and top plan views, respectively, of the stripping members in inoperative position.

Fig. 6 is a side view of the stripping members in operative position.

Fig. 7 is a top plan view of the stripping plate.

Fig. 8 is a perspective view of a flask and a mold forn'ied therein.

Fig. 9 is a fragmentary perspective View, somewhat enlarged, showing the detachable securing means between the cope and pattern plate.

In the drawings, 1 indicates a molding machine provided with a rising and falling frame or carrier 1. The machine 1 may be of any preferred or standard form of 0011- struction. It is preferably provided with side members or uprights 1", which support a pair of guides 1" for the carrier 1 and upper and lower cross pieces 1, 1 The carrier 1 preferably comprises a base 1 provided with a depending member 1 and a pair of spaced standards 1 each carrying a bracket 1 The base 1 is provided with suitable shoes which engage the guides 1 to guide the carrier in its up and down movements. and the depending member 1 is connected or operated by suitable power mechanism (not. shown), preferably of the compressed air type, under control of the valve members indicated as an entirety at 2. The power mechanism and the valve control members therefor are preferably constructed and arranged to jolt the carrier 1* for tamping the sand, as will be clearly understood by those skilled in the art to which my invention rel ates, as well as to raise and lower the carrier, for a purpose to be later described.

3 indicates a plate fixed, preferably in a detachable manner, at or along its opposite ends to the brackets 1 The plate 3 is adapted to support in a well known way a suitable pattern or patterns. As an example ,of an application of my invention for the making of molds, I have illustrated a pluralityof cylindrical patterns 3" adapted to make molds for casting engine pistons. The plate 3 is formed at either side with cut away. portions 3, the purpose of which will .be later described.

" erably comprise a pair of upright guide pins 5, supported at either side of the plate 3, apertured. lugs't projecting from the cone 4 through which the pins extendan'd devices 5 (only one pin and device being shown), which fit elongated slots formed in the pins 5. The devices 5 are preferably wedge shape and engage the adjacent end walls of the slots and lugs 4 to fixedly hold thecope 4- in position.

I 6 indicates a stripping plate arranged to be interposed between the cope .4 and pattern plate 3. The plate 6 is'formed with openings 6, corresponding in 1 shape and size tothe patterns 3 to permit it to fit over them. At opposite sides, the stripping plate 6 is formed with openings 6* to receive the guide plate 5, whereby the latter serve to aline or position the stripping plate 6 on the pattern plate 3 and to guide it during the stripping operation. The under surface of the stripping plate 6 is preferably provided with recesses 6 near thecorners thereof for a purpose to be later set forth. In the fcrm of the invention illustrated, I prefer to provide the stripping plate 6 with gate patterns 6 anda pouring basin pattern'ti which is formed with an opening to receive and support a sprue pin 7.

8 indicates as an entiretythe stripping device. The device 8 preferably comprises four .members. or arms 8 each of which is movably mounted on a suitable support 8 fixed to the cross pieces 1.

The. stripping. members 8 are preferably pivoted on the. support 8, whereby they maybe positioned to strip the mold. The arms8 may beconnected together, whereby they operate about theirpivots simultaneously, the arms 8 on either side of the machine beingconnected by a rod 8 and ears;flies..oaesid einsqe eet w th the corresponding arm 8 on the opposite side by a link mechanism 8, the intermediate link 8 of which is pivoted on the support 8 The outer ends of the arms 8 are preferably weighted to partly counterbalance the weight of their opposite or inner ends. This form of construction cooperates with the means, hereinafter described, for moving the arms 8 into operative position; the counterbalancing weight also maintains the arms in this latter position after they have been moved thereto. 8 indicates a stop pin carried by the weighted end of each arm 8 and arranged to stop the latter at a predetermined point. The pins 8 are preferably screw-threaded in openings formed. in the arms 8, whereby they may be readily adjusted to stop the arms 8 at the proper position.

The arms 8 are foldable or collapsible into a horizontal inoperative position below the pattern plate 3, as shown in Figs. 1 and 4:. When in this position, the arms 8 permit the stripping plate 6 and cope 1 to be arranged on the pattern plate 3 with the ca 1'- rier 1 in its closed or lowermost position in convenient position for the operative to work. The arms 8 on one side of the machine are slightly offset relative to the arms 8 on the opposite side thereof in order that they may be arranged side by side upon the support 8", as shown in Fig. 5. Upon the operation of the carrier 1 to its elevated position, the arms S may be swung about their respective pivots into vertical or operative position, as shown in Figs. 2, 3 and 6, and in the path of movement of the stripping plate 6 when it moves downwardly with the carrier 1, as the latter returns to normal position. When in operative posi tion, the arms 8 arrest the downward movement of the stripping plate (5 and cope 4t superposed thereon to strip the mold from the patterns 3, but permit the carrier 1 and plate 3 to continue downwardly to their normal position, the cutaway portions 3 in the plate 3 allowing the pattern plate 3 to move downward without engagement with the arms as clearly shown in Fig. 3.

The recesses 6 formed in the stripping plate 6 are arranged to receive the free ends of the arms 8 when the plate moves downwardly into engagement therewith. This operation forms a connection between the arms and plate so that the latter cannot be displaced. The plate 6 will therefore be maintained in alined position to receive the guide pins 5 when, after the removal of the cope 4, the pattern plate 3 is again elevated, as will be later set forth.

I prefer to provide suitable means 9 for positively operating the arms 8 from inoperative to operative position during the raisfixed to and movable with the carrier 1. The member 9 may consist of an arm fixed to one of the standards 1 and projecting laterally therefrom into position to engage one of the arms 8 as the carrier 1 moves upwardly. The member 9 operates to swing one of the arms 8 upwardly far enough and impart suflicient momentum thereto so that it, with the assistance of its weighted end, will swing to the operative position.

I prefer to provide two operating arms 9, each of which will engage an adjacent stripping arm 8*.

T will now describe the operation of the machine during the making of a mold. With the carrier 1 arranged in normal position, carrying the pattern plate 3 and stripping plate 6, the cope a is placed on the stripping plate 6 and secured thereto and to the pattern plate by inserting the wedges 5 in the slots of the pins 5*. The sprue pin 7 is also placed in position. This arrangement of the apparatus and cope is shown in Fig. 1. The cope 4c is then filled with green sand, after which the carrier 1, by means of the valve control member therefor, is jolted sufli ciently to tamp the same. Any surplus sand on the cope 4. may be removed with a proper tool, making it level with the upper edge thereof. The sprue pin 7 is removed and also the wedges5 thus unlocking the cope 4 and stripping plate 6 from each other and from the plate 3. The proper valve control member for the carrier l is then operated,

- causing it to rise to its extreme upper position (see Fig. 2) and to then return to normal position. During upward movement of the carrier 1*, the arms 9 engage with and swing the stripping devices 8 upwardly and outwardly into vertical position, then as the carrier 1 returns to normal position the stripping plate 6 engages with and is arrested by the free ends of the devices 8, thus stripping the mold from the pattern 3 (see Fig. 3). The cope 4C is then removed from the stripping plate 6.

. To position the parts for making of a new mold, the proper valve control member for the carrier l is again actuated, causing the carrier to move upwardly and downwardly. During its upward movement, the carrier 1 will engage the stripping plate 6 and lift it off of the arms 8*, following which the operative may swing the arms 8 inwardly and downwardly into the inoperative position.

With the arms 8 in inoperative position, the stripping plate 6 will move downwardly with the carrier i as it returns to normal position, ready to receive a cope 4.

To those skilled in the art of making apparatus of the class described, many alterations in construction and widely diifering embodiments and applications of my inventiou will suggest themselves, without departing from the spirit and scope thereof. My disclosures and the description herein are purely illustrative, and are not intended to be in arv sense limiting.

What I claim is 1. In a machine for making molds, the combination with supporting means having a vertically movable frame, and a pattern support mounted on and movable with said frame, of a stripping plate movable upwardly and downwardly with said support and fitting over a pattern thereon, a mem ber arranged out of the path of movement of said stripping plate but movable into the path of movement thereof when said stripping plate and frame are raised, to stop said plate in elevated position as said frame is being lowered, and means for operating said frame.

2. In a machine for making molds, the combination with supporting means and a vertically movable frame having a pattern support on which a mold structure is placed, of a member movably mounted on said supporting means, said member being normally arranged out of the path of movement of the mold structure, but movable, when said frame is raised, into the path of movement of the mold structure to stop the latter in elevated position as said frame is being lowered, means for raising said frame, and means for moving said member into position to stop the mold structure.

3. In a machine for making molds, the combination with supporting means and a vertically movable frame having a pattern support on which a mold structure is placed, of a member movably mounted on said sup porting means, said member being normally arranged out of the path of movement of the mold structure, but movable, when said frame is raised, into the path of movement of the mold structure to stop the latter in elevated position as said frame is being lowered, means for raising said frame, and automatic means for moving said member into position to stop the mold structure.

l. In a machine for making molds, the combination with supporting means and a vertically movable frame having a pattern support on which a mold structure is placed, of a member movably mounted on said supporting means, said member being normally arranged out of the path of movement of the mold structure, but movable, when said frame is raised, into the path of movement of the mold structure to stop the latter in elevated position as said frame is being lowered, means for raising said frame, and means controlled by said frame for moving said member into position to stop the mold structure.

5. In a machine for making molds, the combination with supporting means and a vertically movable frame having a pattern support on which a mold structure is placed,

of a plurality of members movably mounted on said supporting means and movable, when said frame is raised, into the path of movement of the mold structure to stop the latter in elevated position as said frame is being lowered, means for raising said frame, means for moving one of said members into position to stop the mold structure and operative connections between said members for causing them simultaneously structure and strips it as said frame is lowered, and means for operating said frame.

7. In a machine for making molds, the

- combination with a support, of a vertically movable frame having a pattern over which a mold structure is placed, a plurallty of members movably mounted on said support,

said members being normally arranged out of the path of movement of the mold structure, but movable, when said frame is elevated, into the path of movement of the mold structure, whereby said members engage the latter and strip it as saidframe is lowered and means for operating said frame.

8. In a machine for making molds, the combination with a support, of a vertically movable frame having a pattern over which a mold structure is placed, a plurality of conneeted-together members movably mounted on said support and movable, when the frame is elevated, to position their free ends in the path of movement of the mold struc- V ture, whereby the latter is stripped from the pattern as said frame is being lowered, and means for operating said frame,

9. In. a machine for making molds, the combination with a support. of a vertically movable frame having a pattern plate over which a mold structure is placed, a plurality of membersmovably mounted on said sup port, said members being arranged below and normally positioned beyond the limit of movement of the mold structure in the down- Ward direction, but movable, when said frame is elevated, into the path of movement of the mold structure, whereby said members engage with and strip the mold structure as said frame is lowered,and means for operating said frame.

10. In a machine for making molds, the combination with a support, of a vertically movable frame having a pattern over which a mold structure is placed, a stripping plate on the pattern, a plurality of members movably mounted on said support, said members being normally positioned beyond the limit of movement of said stripping plate in a downward direction, but movable, when the frame is elevated, to position their free ends in the path of movement of said stripping plate, whereby the latter and the mold structure are stripped from the pattern during downward movement of said frame, the said stripping plate being formed on its lower face with recesses to receive the free ends of said members, and means for operating said frame.

11. The combination with a support, and a vertically movable frame having a pattern plate on which a mold structure is placed, of a stripping plate adapted to be intelposed between the mold structure and the pattern plate, a plurality of arms arranged below said frame and pivoted on said support, the said arms being swingable to a substantially vertical position. when the frame is elevated into the path of movement of said stripping plate, whereby the latter is stopped in elevated position when said frame is lowered, and means for operating said frame.

12. The combination with a support, a vertically movable frame, and a pattern plate mounted on the frame and adapted to have a mold structure detachably connected thereto, of a stripping plate adapted to be interposed between the mold structure and the pattern plate, a plurality of arms normally arranged in a substantially horizontal position below said frame and pivoted to said support, the said arms being swingable to a substantially vertical position when the frame is elevated into the path of movement of said stripping plate, whereby the latter is stopped in elevated position when said frame is lowered, means for operating said frame, and means actuated by said frame for swinging said arms in one direction.

13. In a machine of the character described, the combination with a rising and falling frame carrying a pattern, of a plate arranged to be raised and lowered by said frame and formed with recesses on its under surface, and a set of arms pivotally mounted below said plate and swingable into position to strip it from the pattern when the frame is in raised position, the free ends of the arms entering the recesses in said plate, means for moving said arms into operative position, and means for operating said frame.

14:. In a machine of the character described, the combination with a rising and falling frame carrying a pattern, of a plate fitting over said pattern and arranged to be raised and lowered by said frame and adapted to have a mold structure supported on it,

7 ed below said means for stripping said plate and mold structure from the pattern, the said means comprising a plurality of pivoted arms arranged in horizontal position below said frame and swingable, when said frame is raised, into a vertical position for engagement by said plate, and means for operating said frame.

15. In a machine of the character described, the combination with a support and a rising and falling frame carrying a pattern, of a plate fitting over said pattern and arranged to be raised and lowered by said frame and adapted to have a mold structure supported on it, means for stripping said plate and mold structure from the pattern, the said means comprising a plurality of arms pivoted on said support and swingabl'e, when said frame is elevated, into the path of movement of said plate, means for operating said arms, the outer ends of said arms being weighted, and means for operating said frame.

16. In a machine of the character described, the combination of a rising and falling frame carrying a pattern, and adapted to have a mold structure supported on it, means for stripping the mold structure from the pattern, the said means comprising aplurality of pivoted arms swingable into the path of movement of the mold structure, when said frame is elevated, adjustable means for limiting the swinging movement of said arms in one direction, and means for operating said frame.

17. In a machine of the character described, the combination of a rising and falling frame, adapted to. carry a pattern and flask structure, means for stripping the flask structure, the said means comprising a device adapted to be arranged between the frame and the flask structure and a plurality of members swingably mounted below the flask structure and movable, when said frame is elevated, into position to arrest said device during downward movement of said frame to strip the flask structure from the pattern.

18. In a machine of the character described, the combination of a vertically movable frame, adapted to carry a pattern and a flask structure, means for stripping the flask structure from the pattern, the said means includin a member swingably mountfi ame and normally arranged in a horizontal position below it and the mold structure, but movable, when said frame is elevated, into a substantially upright position, whereby its free end is engaged by the mold structure during downward movement of said frame, and means for operating said frame.

19. In a machineof the character described, the combination with a support, of a vertically movable frame carrying a pattern over which a mold structure is placed, a stripping device adapted to be positioned on and movable upwardly and downwardly with said frame, devices arranged to be moved, when said frame is in elevated position, into and out of the path of movement of said stripping device, and means for moving said frame, whereby said stripping device and the mold structure may be stripped from the pattern during downward movement of said frame and the stripping device re-positioned on said frame in the re turn upward movement thereof.

20. In a machine of the character described, the combination with a support, of a vertically movable frame carrying a pattern over which a mold structure is placed, a stripping device adapted to be positioned on and movable upwardly and downwardly with said frame, a member arranged to be moved, when said frame is in elevated position, into and out of the path of movement of said stripping device, means for moving said frame, whereby said stripping device and the mold structure may be stripped from the pattern during downward movement of said frame and the stripping device re-positioned on said frame in the return upward movement thereof, and means controlled by said frame for moving said movable member in one direction.

21. In a machine of the character described, the combination with a support, of a rising and falling frame adapted to carry a pattern and a mold structure, a plate adapted to fit over the pattern and between said frame and the mold structure, devices pivoted on said support and swingable into position to engage said plate during downward movement of said frame, means can ried by said frame and arranged to engage said devices during upward movement of the frame for swinging them into operative position, and means for operating said frame.

22. In a machine of the character described, the combination with a support, of a rising and falling frame adapted to carry a pattern and a mold structure, a plate adapted to fit over the pattern and between said frame and the mold structure, devices connected together and pivoted on said support and swingable into position to engage said plate during downward movement of said frame, means carried by said frame and arranged to engage one of said devices during upward movement of the frame for swlnging them into operative position, and means for operating said frame.

23. In a machine of the character described, the combination with a support, of a rising and falling frame adapted to carry a pattern and a mold structure, a plate adapted to fit over the pattern and between the frame and the mold structure, devices connected together and pivoted on said support and swingable into position to engage said plate during downward movement of said frame, an arm carried by said frame and arranged to engage one of said devices during upward movement of the frame for supports and arranged to be positioned, when said supports are elevated, in and out of the path of movement of said upper support, and means for raising and lowering said lower support, whereby said upper support may be separated from the lower support during downward movement of the latter and re-positionedon said lower support as the latter moves upwardly.

25. Ina machine of the character described, the combination with a support, of

a rising and falling frame comprising a carrier, a pair of uprights and aplate adapted to carry a pattern and a mold structure, a separate plate adapted to it over the pattern and between the pattern carrying plate and mold structure, devices mounted on said support and swingable into position to engage with and arrest movement of said separate plate during downward movement of said frame, and means operated by one of said uprights for swinging said devices into operative position.

26. In a machine of the character described, the combination with support, of a rising and falling frame comprising a carrier, a pair of uprights and a plate adapted to carry a pattern and a mold structure, a separate plate adapted to fit over the'pattern and between the pattern carrying plate and mold structure, devices mounted on said support and swingable into position to engage with and arrest movement of said sepa rate plate during downward movement of said frame, arms carried by one of said uprights and projecting into position to en gage with said devices during upward movement of said frame for swinging them into operative position.

27. In a machine of the character de scribed, the combination of a support. a frame movable upwardly and downwardly .on' said support, a stripping plate mounted on and movable upwardly and downwardly with said frame, and means movably mounted on said support, the said means being normally-arranged out of position for engagement with said stripping plate to permit'it to move upwardly and downwardly with said frame, butmovable, when the lat- 7 said frame, means for operating said frame ter is in elevated position, into position to be engaged by said stripping plate during downward movement of said frame.

28. In a machine of the character described, the combination of supporting elements, a plate arranged to be alternately supported by said elements, one of said elements being movable vertically and adapted to support a pattern and a mold structure and to move said plate upwardly and downwardly and the other element being arranged below said plate and movable into and out of the path of movement of said plate when said vertically movable element is moved into its elevated position, and means for moving said vertically movable element upwardly and downwardly, whereby said plate and mold structure may be stripped from the pattern during downward movement of said vertically movable element and said plate re'engaged with said vertically movable element during return upward movement thereof.

29. In a machine of the character de scribed, the combination of a rising and falling frame adapted to carry a pattern and a mold structure placed thereover, a stripping device adapted to fit over the pattern. and between it and the mold structure and movable upwardly and downwardly with and means swingable into the path of movement of said stripping device and at a point between the limits of movement of said frame, whereby said stripping device is in tercepted by said swingable means during downward movement of said frame.

3 O. In apparatus of the character described, the combination of a rising and fall ing frame provided with a pattern and adapted to removably support a flask structure, a stripping plate mounted on and movable upwardly and downwardly with said frame, means for raising and lowering said frame, and devices normally out of engage- .ment with said stripping plate, but positionable, when said frame is in elevated position, into and out of the path of movement of said stripping plate, whereby said stripping plate can be arrested during downward movement of the frame to strip the mold structure from the pattern and said plate re'e'ngaged upon said frame as the latter moves upwardly.

31. In apparatus of the character described, the combination of a rising and falling frame provided with a pattern and adapted to removably support a flask structure, a stripping plate arranged on said vframe and over the pattern thereon, means for raising and lowering said frame, and

devices operatively connected together and swmgable into and out of the path of move- ,ment of said stripping plate when the frame is elevated, whereby said stripping plate can l. l O

be arrested during downward movement of the frame to strip the mold structure from the pattern.

32. In apparatus of the character described the combination of a vertically m0vable frame provided with a pattern and adapted to removably support a flask structure, a stripping plate mounted on and movable upwardly and downwardly with said M frame, means for raising and lowering said frame, devices swingable into and out of the path of movement of said stripping plate when the frame is elevated, whereby said stripping plate can be arrested during downmold structure from the pattern, and means for operating the said devices in one direction.

In testimony whereof I afiix my signature, in the presence of two witnesses.

DANIEL J. RYAN. Witnesses J. F. Sonns, GEO. B. PITTS.

t npies of this patent may be obtained for five cents each, by addressing the Commissioner of lPatente.

Washington, I). C.

Ward movement of the frame to strip the

Images