Патент USA US2126536код для вставки
Aug. 9, 1938. . c. c. cox ET AL" 2,126,536 MOLD COOLING DEVICE FOR LINE CASTING MACHINES Filed Oct. 7, 1936 2 Sheets-Sheet 1 III IlIl‘IlII IIII IIII III! (' 1-132 (I INVENTOR5. . (oz and e149 ATTORNEY?'. Aug. 9, 1938. c. c. cox ET AL 2,126,536 MOLD COOLING DEVICE FOR LINE CASTING, MACHINES Filed ‘Oct. 7, 1936 2 Sheets-Sheet 2 \ INVENTORJ, Cal-£1 C Cox arm! BY Patented Aug. 9, 1938 2,126,536 UNiTED STATES PATENT OFFICE. 2,126,536 MQLD COOLING DEVICE FOR LINE CAST ING MACHINES‘ Cyril C. Cox and Earl L. Purdy, Indianapolis, Ind. Application October 7, 193d, Serial No. 104,472 3 Claims. (Cl. 199-56) The present invention relates to improvements in line casting machines and has particular ref erence to machines of the type usually referred to in commercial art as the Linotype machine (It ‘or the Intertype machine, although the inven tion is applicable to other types of machines hav ing substantially the same characteristics. In machines of this character there is usually provided a mold disc provided with one or more ‘1 mold cavities therein which extend from the face of the disc to the rear of the disc. In addition to this mold disc there is provided what is known as a vise, in the commercial art, which is hinged at its lower end and, during "91 normal operation is held by suitable hand screws at its upper end in direct proximity to the face of the mold disc. This Vise carries the matrices against which the metal is forced for the pur pose of making the type and also carries trim 20 ming knives, which are arranged on either side of an ejector opening in the vise and through which opening the cast slug is adapted to be ejected after the cast has been made. The mold disc during the molding operation is adapted to be placed in communication with the metal pot in which the molten metal is adapted to be contained to receive from the metal pot a proper supply of molten metal for casting a slug. One of the difficulties heretofore experienced 130 ilin casting Linotype or Intertype slugs and the like is that due to the rapid operation of, the machine the mold in the mold disc becomes so heated, from frequent injections thereinto of the hot metal during the cast, that the metal when set as soon as the molten metal is delivered to the mold cavity. As a result of the maintenance of the mold cavity and its surrounding walls in a cooled con dition, not only is it possible to obtain a more solid slug but it is possible to obtain the slug without varying the temperature of the metal in the metal pot or mouth piece. The mold disc as a rule has one or more mold cavities therein of different sizes so that different size slugs may 10.. be cast. Obviously, without means for cooling the molds, it would be necessary to change the temperature of the metal in the pot or mouth piece when changing from large to small or from small to large slugs, as the case may be, to com pensate for the variation in the heat of the mold. ' The difficulty is, not that the metal in the pot really gets too hot but that the mold becomes so ' heated by the repeated casting of hot metal in the same mold, that, due to the increasing heat of the mold itself, the metal will not be cooled quickly enough to cause the slug to be properly cast. By maintaining, through the medium of the present invention, the temperature of the mold cavity comparatively low, no adjustment need be made in the temperature of the metal pot or the metal contained therein. For the purpose of disclosing the invention, certain embodiments thereof have been illus trated in the accompanying drawings. In said drawings, Fig. 1 is a front elevation of a mold disc used on the Intertype machine; Fig. 2 is a face view of the vise, looking at the same as it is let down on its bottom hinges from 35 "" “forced into the mold is not properly cooled. As the mold disc; a result, when the metal does not take a quick Fig. 3 is a partial face view of the mold disc set, due to the suction effect of the plunger in showing the position of the air delivering tube; the metal pot, there is a tendency for the metal Fig. 4 is a diagrammatical view of a layout for in the mold to be drawn back into the metal pot. supplying compressed air to the air tube; 40 ‘This of course results in a skeleton slug instead Fig. 5 is an elevation of a modi?cation of the of a solid slug. Furthermore, where the metal invention wherein the air delivery means is em— is not quickly and properly cooled the resultant 1 bodied in a trimming knife of the type adapted slug is porous and soft and is apt to become dam __aged when the slug is ejected from the mold for use in connection with a Linotype machine; and cavity by the operation of the ejector blades. and be crushed under the tremendous pressure exerted on the face of the slug during the stereo typing process and under the impression rollers of the press. . It is one of the objects of our invention to pro vide means for properly, adequately, and quickly cooling the mold cavity of the mold disc and maintaining the same in a properly cooled con dition so that the slug will quickly and properly Fig. 6 is a similar view in connection with a trimming knife adapted for use in connection with an Intertype machine. In the structure illustrated, the mold disc I is of the usual and standard construction now em bodied in the commercial Intertype machine. This disc is provided with a series of openings in which the molds 2, 3, 4, and 5 are shown. As will be noted, these mold cavities are of different size for different size slugs and the disc is adapted 55 2 2,126,536 to be rotated to present any selected mold to its casting position and ejecting position. In the structure illustrated the mold cavity 3 is in its casting position and the mold cavity 2 is in its ejecting position; the disc having been rotated be tween the casting position and the ejecting posi tion approximately three-quarters of a turn. Mounted on the vise l’ is a pair of trimming knives 8 and 9 which are usually in front of the 10 ejector opening of the Vise. When the parts are assembled in operative position these trimming knives 8 and 9 are immediately opposite the mold cavity when the same is in its ejector position so that the slug may be forced out of the mold cav 16 ity by means of the ejector blades between the knives and through the ejector opening in the vise. During the passage between the knives the sides of the slug are properly trimmed. Due to the fact that these knives are adapted to coop 20 erate with mold cavities of different widths, one of the knives, preferably the knife 9, is made lat erally movable by the operator through suitable lnstrumentalities. In order to properly cool the mold cavity, and 25 incidentally, the slug as it is being ejected there from, we mount in a position adjacent the ejector position of 'the mold cavity an air delivery tube | I. In order to accurately position this tube rel atively to the mold cavity, the tube is provided 30 with a pair of mounting lugs l2 which are adapted to be secured, by means of bolts or ma chine screws I 3 directly to the face of the ad_ justable knife 9. Thus the cooling tube is auto matically positioned for all sizes of slugs. This 35 air tube is provided with a series of openings l4 and so formed in the tube as to direct the air against the body of the mold and into and through the mold cavity or cell. ' As a result, air under compression is forced into the cavity to 40 quickly chill or cool the cavity after the ejection of the slug. Furthermore, ‘during the ejection of the slug air is delivered against the slug and the surrounding parts of the mold. We have discovered, as a result of rather ex tensive experiments, that this air should be, to ac complish satisfactory results, clean, free from moisture, and free from oil. It should be per fectly dry and of course free from dust to pre vent the accumulation of dust, moisture, or oil 50 in the mold cavity which, of course, would pre vent a perfect formation of a slug and would also transmit oil and moisture to the more delicate mechanism of the machine which of necessity must be kept from these elements at all times. 55 To this end, we provide means for ?ltering the air before it is delivered to the tube. In actual practice, in addition to the tube, which is mounted as above described, we also mount on the machine, adjacent the operator, an 60 air-controlling valve l5 which is connected by a suitable ?exible conduit IS with the air delivery tube II. This ?exible tube permits the sta tionary mounting of the control valve l5 and at the same time so connects the valve with the tube 65 as to permit relative movement between the tube and the valve, thereby permitting the opening and closing of the vise without disturbing the parts. The valve I5 is connected by a conduit IT with an air ?lter I 8 preferably mounted on some stationary part of the machine itself, although this is not essential, while being desirable. This ?lter I8 is connected by a conduit l 9 with a mas ter ?lter 20 which may be mounted in some part of the building and from which various branches may be taken for the purpose of delivering com pressed air to a number of machines located in the building. The master ?lter 20, of course, is suitably connected with a supply of compressed air which may be in the form of an electrically 10 driven compressor or any other desired source. By the provision of the control valve IS the proper quantity or ?ow of air to meet varying conditions in the machine may be controlled by the operator without changing his position. 15 If desired, instead of mounting a separate tube on the adjustable knife, as illustrated in Fig. 2, provision may be made whereby air is supplied through the knife itself. To this end a knife, as illustrated in Fig, 5, may be provided, which is 20 provided with a longitudinally extending open ing communicating with air delivering openings 21 corresponding to the openings l4 in the tube ll. These openings are so directed as to deliver the air to the mold cavity in the same manner as 25 they are delivered by the separate tube, as illus tratedin Fig. 2. The knife may be connected by a conduit 22 and suitable coupling 23 with the air supply conduit 16. The speci?c structure of knife illustrated in Fig. 5 is adapted for the Lino 30 type machine. In Fig. 6 we have illustrated a knife 24 likewise having openings 25 therein sim ilar to the openings l4 and 2|. This knife is of the type used on the Intertype machine. In all instances, however, it will be noted that the air 35 supply is delivered directly into the mold cavity so that it will reach the innermost recesses there of and the air supply means is mounted to move with the adjustable knife so that the same rela tive position of the air supply will be maintained 40 irrespective of the difference in size of the mold cavities positioned for use. We claim as our invention: 1. In a line casting machine, the combination with a mold disc having a mold cavity therein, a 45 vise associated with said disc and trimmer knives mounted on said vise, one of which is movable, of means carried by said movable knife for de livering air into said mold cavity. 2. In a line casting machine, the combination 50 with a mold disc having a mold cavity therein, a vise associated with.v said mold disc, trimmer knives mounted on said vise, one of which is ad justable, and an air-delivery conduit carried by said adjustable knife having a plurality of air 55 delivery openings directed toward said mold cav ity and adapted to deliver air into said cavity. 3. In a line casting machine, the combination with a mold disc having a mold cavity, a vise as sociated with said disc, and trimmer knives 60 mounted on said vise, one of which is adjustable, said adjustable knife having a conduit formed therein and extending longitudinally thereof and having a plurality of discharge nozzle openings extending from said cavity to the face of said 65 knife and directed toward said mold cavity. CYRIL C. COX. EARL L. PURDY.