US2087593A - Cooling plate for molding machines - Google Patents

Description

COOLING PLATE FOR MOLDING MK'CHINES Filed July 15, 1935 2 Sheets-Sheet 1 Patented July 20, 1937 coonmc. PLATE roa MOLDING moms Aden A. English, Jersey City, and Albert A. Forster, Union, N. 1., assignors to Standard Oil Development Company, a corporation of Delaware Application July 13, 1935, Serial No. 31,202

1 Claim.

This invention relates to improvements in cooling plates for molding machines.

The invention will be fully understood from the following description taken in connection with the accompanying drawings, in which latter Fig. 1 is a perspective view of a section of a molding machine showing cooling plates in perspective in their operative position in the molding machine. Fig. 2 is a longitudinally sectional view taken along the line lI- II of Fig. 1. Fig. 3 is a transverse sectional view taken along the line III-III of Fig. 2.

Referring particularly to the drawings, reference numeral I designates the molding machine head. Channel carriers 3 extend from the head I .toward an hydraulic ram (not shown). The molding machine is made up of alternate cooling plates 5 and mold sections 1 which are hung on the channel carriers 3 by means of flanges 8. The hydraulic ram (not shown) holds the cooling plates 5 and mold sections 1 together. The mold sections 1 and the cooling plates 5 cooperate to form a plurality of mold cavities Ill. The

mold cavities III are adapted to receive, while in melted condition, melted paraflin or other substances which are liquid when hot and which solidify on. cooling.

Each cooling plate 5 is formed in halves l3 and i4 which are secured together by means of brass screws l6, or the like, to form a hollow body portion. The halves l3 and I4 are identical, except that they are made right and left hand in order to properly match. The screws I6 are preferably constructed of brass or other noncorrosive material. Each half section l3 and I4 of the cooling plate 5 is provided at opposite ends of its bottom wall l8 with semi-circular slots which, when thesection halves are assembled, cooperate to form an inlet l9 and an outlet 20 40 for cooling liquid. Each section half l3 and I4 is provided with a vertically extending partition 22 which cooperates to form a channel 24 leading upwardly from the inlet is. The partition 22 terminates at 25 in spaced relation to the top 45 wall 26 of the hollow body portion. Each section half l3 and I4 is provided with flanges which cooperate when the section halves are assembled to form horizontally extending partitions 30 and 3|. These partitions 30 and 3| extend horizon- 50 tally from the partition 22 and terminate in spaced relation to the end wall 33 of the cooling plate. Each section half l3 and I4 is provided with flanges which, when the section halves are assembled, cooperate to form partitions 35 55 and 36 which extend horizontally from the end wall 33 in spaced relation to partitions 30 and 3|, and which terminate in spaced relation to the vertical partition 22. This results in the formation of a serpentine channel 40 which extends from the upper end of the channel 24 downwardly to the outlet 20. The section halves l3 and i4 are identical, as above described, except that they are made right and left hand to properly match. The Joints between the section halves l3 and I4 are sealed with suitable sealing material, such as white lead or the like, designated 42. The section halves l3 and I4 are constructed of cast iron, or the like, and by means of the screws l6 and sealing material 42 a liquid-tight hollow body portion is formed.

Cooling fluid, such as salt water, is caused to flow through the inlet IQ of the assembled cooling plate. The cooling liquid flows upwardly through the channel 24 and into the channel 40 whichconducts the liquid back and forth horizontally until it reaches the outlet opening 20. The cooling liquid is forced to the top of the cooling plate first where heat dissipation is greatest and then horizontally back and forth to the outlet 20 oi. the cooling plate. By this arrangement the cooling efliciency of the plate is increased a large amount, such as 15%, and the rate of flow of the cooling liquid at the upper turning point 25 where sediment has a tendency to collect is materially increased, thereby keeping the sediment in motion and causing the sediment to be ejected through the outlet 20. This constructionof cooling plate permits of the use of salt water as a cooling medium. The battle design is such that water flows continuously and keeps silt from settling out of the water and thereby eliminates stoppage of the channels 24 and 40 with silt.

The section halves l3 and I4 are preferably galvanized on their inner and outer surfaces, thereby eliminating the corrosion of the metal of the section halves. As a result, the channels 24 and 40 are provided with smooth surface walls which aid in keeping the slit in the cooling liquid in suspension or in motion. By constructing the cooling plate in section halves the plating or galvanizing of the inside walls of the section halves is facilitated. Furthermore, the section halves can be removed by simply unscrewing the screws It to permit cleaning of the cooling plate, if for some unusual reason the flow of cooling liquid through the channels 24 and 40 is stopped. The cooling plates and molding sections are adapted to mold cakes of any suitable size, for instance, melted wax can be solidified to form a commercial A device for molding solidiflable molten materials consisting of a frame having a rigid end member and side rails, a plurality of U-shaped mold sections supported by said side rails in spaced relation one to another, each of said sections having open sides and a centrally disposed vertical partition, a plurality of sectional hollow cooling plates of which one is disposed between each pair of mold sections co-operating therewith to provide a plurality of paired upwardly opening mold cavities, each section of said plates being formed with integral, inwardly faced, matching ribs providing a tortuous path for cooling liquid through each plate, said plates and mold sections being placed and maintained in operative association by pressure applied at the end of the assembly opposite said rigid end with the centrally disposed vertical partition 01 each mold section providing against distortion of the cooling plates under such pressure.

ADEN A. ENGLISH. ALBERT A. FORSTER.

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