US3551952A

US3551952A - Heat shielded press

Info

Publication number: US3551952A
Application number: US689040A
Authority: US
Inventors: Milton Morse
Original assignee: Individual
Current assignee: MORSE NENA
Priority date: 1967-12-08
Filing date: 1967-12-08
Publication date: 1971-01-05
Anticipated expiration: 1988-01-05

Abstract

A MOLDING PRESS HAVING FIRST AND SECOND ELEMENTS RELATIVELY MOVABLE TOWARD AND AWAY FROM EACH OTHER TO ENCLOSE AN ARTICLE TO BE MOLDED. EACH OF SAID ELEMENTS BEING PROVIDED WITH COOPERATING HEAT SHIELD MEANS TO PREVENT LOSS OF HEAT DURING THE OPENING AND CLOSING AND OPERATION OF THE PRESS.

Description

Jan. 5, .1971" M MORSE n v 3,551,952

HEAT SHIELDED PRESS Filed Dec. 8, 1967 United States Patent O 3,551,952 HEAT SHIELDED PRESS Milton Morse, Fort Lee, N.Y. (41 Honeck St., Englewood, NJ. 07631) Filed Dec. 8, 1967, Ser. No. 689,040 Int. Cl. B29h 5/22 U.S. Cl. 18-17 1 Claim ABSTRACT OF THE DISCLOSURE A molding press having rst and second elements relatively movable toward and away from each other to enclose an article to be molded. Each of said elements being provided with cooperating heat shield means to prevent loss of heat during the opening and closing and operation of the press.

This invention relates generally to the field of heated or cryogenic molding presses, and more particularly to an improved form thereof having heat shielding means for at least partially preventing the exchange of heat between the molding area and the surrounding atmosphere during operation.

It is among the principal objects of the present invention to provide a heat shielded molding press capable of maintaining a relatively constant temperature, not only across the faces of the upper and lower platens, but also within a confined area between the platens.

Another object of the invention lies in the provision of an improved molding press possessed of the above advantage which permits the press operator to work in an ambient temperature which is considerably reduced or modified from that of prior art devices, thereby permitting him to function more efficiently.

Another object of the invention lies in the provision of an improved heat shielded press, possessed of the above advantages, in which the cost of fabrication may be of a reasonably low order, directly comparable with existing prior art devices, thereby permitting consequent wide sale, distribution and use.

A further object of the invention lies in the provision of a heated molding press, which owing to heat shielding construction may be operated at considerably lower cost than conventional devices.

A feature of the disclosed embodiment lies in the provision of a sliding sealing means which maintains an effective seal irrespective of the relative positions of the platens comprising the device.

These objects and features, as well as other incidental ends and advantages, will more fully appear in the progress of the following disclosure, and be pointed out in the appended claim.

In the drawing, to which reference will be made in the specification, similar reference characters have been employed to designate corresponding parts in the several views.

FIG. 1 is a schematic view of an embodiment of the invention, showing the device in relatively opened condition.

3,551,952 Patented Jan. 5, 1971 l CCY FIG. Z is a similar schematic view showing the device in fully closed condition.

In accordance with the invention, the device, generally indicated by reference character 10, comprises broadly: a frame element 11, a fixed or upper plate 12, a relatively movable or ram plate 13, an upper heat shield element 14, a lower heat shield element 15, an upper heater element -16 and a lower heater element 17.

The frame element 11 may be of any convenient type, such as that illutrated in the drawings and including a pair of

vertical support walls

19 and 20, the upper ends 21 of which are modified to provide threaded means 22 engaged in openings 23 in the fixed plate 12, to be maintained therein by nut means 24.

The fixed plate 12 is horizontally positioned between the walls '19 and 20, and includes an outer surface 26 and an inner surface 2.7 which mounts the upper heat shield element 14. The movable plate 13 includes a lower surface 30 and an upper surface 31 supporting the lower heat shield element 15. Guide means 32 cooperates with the

walls

19 and 20 to permit the plate 13y to be moved upwardly and downwardly relative to the fixed plate 112 under the action of hydraulic or other lifting means (not shown).

The upper heat shield element 14 includes a main body of insulative material 35 of generally rectangular configuration and bounded by side walls 36. A lower wall 37 supports the upper heater element 16 which may be of any desired type well known in the art. Surrounding the side walls 36 is an insulative upper end wall 38 forming a recess with a peripheral wall 39. The wall 39 is bounded by an inner surface 40, and an outer surface 41 as well as a lower edge 42.

The lower heat shield element 15 is generally similar, including a main body of insulative material 45, an insulative lower wall 46, as well as a peripheral wall 47 bounded by an inner surface 48, an outer surface 49 and an upper edge 50. Attached to the outer surface 49 at t-he edge 50 thereof is a resilient wiper 51 which forms a sliding seal with the inner surface 40 of the wall 39. Extending through the peripheral wall 47 along one side thereof is a selectively openable door opening 52 which is uncovered when the device is in the position shown in FIG. 1, and may be opened to permit insertion and withdrawal of molds.

During operation, the door opening is opened for each molding cycle, subsequently closed, and the press moved to closed position, in which position the opening is completely covered. Heat loss is conned to that period in which the opening is uncovered, and only one area on the peripheral of the press is thus exposed to emanating heat, thereby materially increasing the comfort of the operator.

I wish it to be understood that I do not consider the invention limited to the precise details of structure shown and set forth in this specification, for obvious modifications will occur to those skilled in the art to which the invention pertains.

|I claim:

1. A heat shielded molding press comprising: a first relatively fixed plate, a second plate movable toward and away from said first plate to close and open said press, heating means associated with at least one of said first and second plates, rst and second heat-sealing means on each of said rst and second plates, respectively, positioned in adjustable partially overlapping relation, and means effecting a sliding seal between said first and second heat-sealing means; there being a door opening in the inner of said overlapped first and second elements which is uncovered when said press is in open position, and closed when said press is in closed position, whereby loss of heat Within said rst and second heat-sealing References Cited UNITED STATES PATENTS 3/ 1916 Williams. 3/1959 Frieder et al.

means is limited to that period in which the door opening 10 18-6 is opened and in the area of said door opening.