US1586760A

US1586760A - Type-casting machine

Info

Publication number: US1586760A
Application number: US70704A
Authority: US
Inventors: Norman Joseph Frederick
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-11-21
Filing date: 1925-11-21
Publication date: 1926-06-01
Anticipated expiration: 1943-06-01

Description

June 1 1926.

1,586,760 J. F. NORMAN TYPE CASTING MACHINE Filed Nov. 21, 1925 %se//Z MAM/f [76? if at.

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FATENT TYPE-CASTING MACHINE.

Application filed November 21, 1925.

The invention relates to improvements in double-acting type casting machines of the kind described in specification No. 1,165,997. Such machines have hitherto been subject to various disadvantages, which have greatly restricted their use for the following reasons.

It will be readily appreciated that, in order for this kind of machine to give good results, all the moving parts must be very carefully constructed and exactly fitted, particularly those which make up the molds. Moreover, when the molten metal is injected into the mold a considerable quantity of heat must be conducted away before the type can solidify and be ejected from the machine, and the quicker this operation can be effected, the better will be the quality of the product and the speed of production. In the machines previously proposed, the coolarrangements consisted of a short Sta tionary water cooled top plate carrying a plate forming the upper part of the molds, and a water channel or jacket formed in the bed of the machine and in contact with a stationary plate forming the lower part of the molds, the side portions and slidable matrix ends of the molds being carried be tween said plates forming the upper and lower mold parts, upon a traveling mold carrier. The channels for the cooling water were concentrated about the place where the molten metal was injected, but the arrangenent was found to be of little practical use, because the bottom mold plate became very hotat one point only, and the heat was mainly conducted through the travelling carrier. Consequently the type would not readily solidify and the sliding parts tended to stick fast in their slides, owing to the heat, which could only be remedied by slacl ening the lit and employing only a few molds on a long carrier and operating the machine ata very slow speed, making it commercially at a serious disadvantage. These drawbacks are moreover not remedied by merely forming each mold complete with movable bottom, sides and top as a single unit, since in addition to the defects above stated, the conduction of heat to the stationary water jackets will be still more ditlicult.

By the present invention all the above mentioned disadvantages are overcome and a machine is provided which is capable of 55 casting type of high quality with great Serial No. 70,704.

rapidity and with little wear upon the mov ing parts.

According to the invent-ion I provide a type casting machine of the kind above re ferred to, characterized by a travelling bottom plate for the molds, which plate also forms part of a travelling water jacket. Preferably the water jacketis integral with the travelling mold carrier, through the whole length of which it may extend, and according to a further feature of the in.- vention the water is supplied to the jacket by means of telescopic tubes, secured on the one hand to the travelling mold carrier and on the other hand to the machine bed or other stationary part.

By this means the machine is maintained at a substantially uniform heat throughout, which can be readily controlled within the desired limits by varying the quantity of water passed, and besides giving a high quality product at high speed of production, enables a long mold carrier to be employed carrying any desired number of molds and matrices.

In order that the invention may be clearly understood and readily carried into effect a preferred embodiment of same is illustrated in the accompanying drawings, wherein,

Fig. 1 is elevation of a part of the machine bed carrying the travelling mold carrier, showing three side mold portions mounted in position by way of example. Fig. 2 is a plan. Fig. 3 is a cross section taken on line 33 of Fig. 2 to an enlarged scale, and Fig. 4 is an elevation of the complete machine to a reduced scale.

Referring to the drawings, the frame 1 and stationary machine bed 2 (which needs no water jacket) are of usual form and size, and upon the bed is slidably mounted the travelling mold carrier 3. The latter can be of-any convenient length, for example considerably longer than the bed 2 (see Fig. 4), and is formed internally with two water channels or jackets l, 5, which extend throughout practically the whole length of the carrier 3, communicating at one end by passages 6. The channel l passes substan tially centrally through carrier 3, and belowv the rear parts of the side mold portions 7, between which slide the matrices (not shown). The other channel 5 lies adjacent the front or casting edge f e meld. ar-

rier and below the front parts of the side mold portions 7 which actually constitute the s of the molds, and a plate 8 ot forms a Water-tightjoint and all'ords an accurate surface which will not warp when 10 heated, the channel has formed therein at short interrals bosses 9, to which the plate.

S is firmly secured bycountersunk screws 10, passages 11 being proridedin the bosses 9 permitcirculation ot the Water and serving"incidentally to improi'e'the cooling ei'licienev. .WYater inlet passages 12 are prorided in the carrier 3 communicating with channel 5, and outlet passg'es' 13 con'ununieating with channel st. Channel 5 may also belined with a thin copper casing.

The cooling Water can be supplied and Withdrawn by any suitable means, such as torexample by flexible pipes fitted to the carriers and communicating witlrpassages i2, 15 but a ipuch more satisfactory method is by the use of telescopic tubesyas provided according to a further feature ot'the invention. A bracket llcarrying tubes 17, 18 is bolted to the carrierf?) conduits lo, 16 in said bracketcommunicating with said tubes and passages lii 13. The other ends o't said tubes slide in a stutiingl box l9 secur'ed to the bed 2. Tubes 2Q, 21 are connected with the stalling box 1.) and a bracket 22 secured the opposite endot the bed as shown in -l-. and

pipes

23, 2% attached to said tubes respectivel supply and lead away the coolinz'i water. Tubes 17, 15% can thu l' L J. scopically within tubes ill the car S is moved to and fro along the bed, and it will also be apparent that this telescopic movement will assist the circulation of Water through the cooling system by alternately drawing irater in and forcing it out.

The iath of the cooling Water may be traced as follows. From inlet pipe 25, through tube 20. tube 19. conduit 16. inlet 'iassacjes lil'alongchannel and passages 11, to passages (hand thence back through channel l. outlet assages 13, conduit 17, tubes 17. 21 and away by pipe 2-1.

The casting is' eltected in known manner by moving the carrier 3 beneath a stationa ry water cooled upper mold plate and cams as described in specification No. 1,165,997, but it is eiident that by'proriding a travelling bottom mold plate 8 which is cooled phroughout the whole of its length by an attached Water jacket, not only is the heat or" the molten metal applied at a ditl'erent point on said plate at each casting operation but a continual supply of cooling" water rum ning along said plate rapidly disperses and removes said heat while at the same time the body of the carrier 3, the matrices and the side mold portions 7 are also cooled. Thus the whole carrier and adjacent parts are maintained at a moderate temperature, the high temperature of casting being only momentary and its cil'ects negligible, the moving parts may be an ma sliding tit without danger. of jannnhnr and the machine is therefore capable of producing type an eigceedinp'ly good quality and at a high speed of production.

I claim:

A do iblc-acting type casting machine having a travelling mold carrier, a travelling bottom mold plate secured to said carrie r, a trarelling Water jacket in said carrier in contiguity with said plate. and means for conducting ater through said jacket. substantiall; as and torthe purpose set forth. W

2. A double-acting type casting machine having a travelling mold carrier. a \rater channel formed in said carrier. a bottom mold plate secured to said carrier in contigultywith said water channel, and means i or conducting ater to and from said channel, substantially as described.

3. A double acting type casting machine having a. travelling mold czrrier. a trarelling bottom mold plate secured to said carrier, a travelling, Water jacket in said carrier in contiguity with said plate comprising' a water channel adjacent one side and a second parallel water channel adjacent the center of the carrier, and means for conducting water to and from said jacket, substantially as described.

A double-actingtype casting; machine having" a travelling mold carrier, a travelling bottom mold plate secured to said carri er a travelling at ci. jacket in said car rier in cont-iguity with said plate comprising a water channel adjacent one side and a second parallel Water channel adjacent the center of the carrier, telescopic Water tubes connected between said travelling water jacket and a stationary part of the machine. and means for supplying Water to sa d tubes, substantially as described.

JOSEPH FREDERICK NORMAN.