Патент USA US2405077код для вставки
JU1Y730, 1946- E. J. voN DER HEIDE 2,405,077 VULCANIZER l ' \\ \\ Filed Sept. 4, 1945 2 Sheets-Sheet l \\ Elmer .7. vozzderh‘ez'de INVENTOR. AT TORNEY. July 30, 1946» E., J. VGN DER HEIDI-z 2,405,077 ' VULCANIZER Filed Sepi. 4, 1943 2 Sheets-Sheet 2 .mmmm.„vn nl ___... _V l ,nwim „Èa Elmer .7.' von der-H221' de INVENTOR ATTURIÈEY. Patented July 3o, 1946 2,405,077 UNITED ‘STATES iÜÀTENT OFFICE 2,405,077 VULCANIZER Elmer J. von der Heide, Akron, Ohio Application September 4, 1943, Serial No. 501,200 3 Claims. (Cl. 18-6) 2 My invention relates to vulcanizers. One method commonly employed in the com mercial vulcanization of rubber articles consists in placing the rubber-charged molds into a steam tight container, commonly known as an auto clave, where they are directly exposed to the heat of live steam under pressure for predetermined time periods. Access to the auto-clave is ordi narily had through a suitable door provided at one or both ends thereof. With the equipment heretofore used the proc ess is intermittent. After each vulcanizing peri od the steam pressure within the auto-clave must be exhausted before a door can be opened to per clave shown is of a type that is ordinarily closed at both ends by circular doors (not shown) adapted to seat within rings I3 provided at the opposite ends thereof, each ring being equipped with the usual series of inturned lugs I4 for re leasably locking the doors in pla-ce. In this instance the doors are omitted, the ends of the auto-clave being permanently closed by devices through which rubber-charged molds l() may be admitted thereto and discharged there from without releasing the steam pressure there in. Devices for these purposes may assume var ious forms but those shown have proven satis factory. Each comprises a cylinder I5 or I5’ mit withdrawal and replacement of the molds 15 having a short laterally projecting throat I6 in therein, and after each charge of fresh molds the termediate the ends thereof adapted to seat with steam pressure must be reestablished to provide in one of the end rings I3. A series of outwardly the necessary vulcaniz-ing temperatures. Each projecting lugs I1 on each throat are arranged to actual vulcanizing period is ordinarily relatively pass between the lugs I 4 of the ring I3, as indi short and the mold replacement periods frequent 20 cated in Fig. 4, and to interlock with and behind thereby entailing a considerable loss of steam the latter upon rotation of the throat through a and of valuable timeOne object of the present invention to pro vide a method and means for efîecting a substan tially continuous Vulcanizing process. small angle~ In this manner each cylinder l5 or I 5’ is releasably but securely attached to an end of the auto-clave Iii, a suitable packing I8 being 25 preferably provided to seal the joint therebe Another object to to provide means for admit tween. ting articles to a steam charged container with Each cylinder I5 or I5’ constitutes a housing out releasing the steam pressure therein. and guide for a piston-like shuttle IS lengthwise Another object is to provide means for with reciprocable therein. Each shuttle I9 is prefer drawing articles from a steam charged contain 30 ably shaped to provide two end chambers 20 and er without releasing the steam pressure therein. 2l separated by an intermediate portion 2ï and Another object is to provide a method and suitable means, such as piston rings 23 adjacent means for subjecting a substantially continuous the opposite ends of each chamber, coact with succession of articles to steam under pressure. the interior of the cylinder I5 or I5' to seal the Other more specific objects and advantages . latter against escape of steam therethrough. will appear, expressed or implied, from the fol In the device shown each chamber 20 and 2I lowing description of an illustrative embodiment has an opening 24 at one side thereof, adapted of the present invention. to register with the throat I5 alternatively and In the accompanying drawings: each also has a second opening 25 at the opposite Figure 1 is a horizontal longitudinal sectional side thereof adapted to register with one of the View of a vulcanizer constructed in accordance openings 26 or 2l in its guide cylinder Whenever with the present invention. the opening 2@ of the other is registered with the Figure 2 is a vertical longitudinal sectional throat I6. view of the charging device shown in Fig. 1. Chambers 20 and 2I in the cylinder I5 consti» Figure 3 is a vertical sectional view taken 45 tute receiving chambers through which the rub along the line 3_3 cf Fig. 1 on a larger scale. ber-charged molds a may be ad-mitted to the Figure 4 is a sectional view taken along the auto-clave I0. For instance, with the chamber 2D line 4-4 of Fig. 3. in the position shown in Fig. l it may receive a Figure 5 is a diagrammatic view of a fluid ac mold through the opening 25, and then the shuttle tuating system employed. I9 may be shifted to register the chamber 20 with The vulcanizer selected for illustration in the throat I6 through which the mold may be cludes a conventional auto-clave I0 in the form transferred into the auto-clave I3. Likewise, with of a horizontal elongated cylinder supplied with the shuttle I9 in the position last described the steam under pressure through a pipe I I and hav other chamber 2I is in position to receive a mold ing an exhaust and drain pipe I2. The auto through the opening 2l, and when the shuttle is :2,405,077 3 shifted into the position first named, this chamber 2| registers with the throat I6 and the mold therein may be transferred into the auto-clave. Provision is made for eii‘ecting the transfer oi the mold to the auto-clave as each chamber is registered therewith. In this instance a pusher in the for-m of a piston rod 28 is utilized for this purpose. The rod 28 is shown connected to a pis ton 29 reciprocable in a cylinder 30 attached to the cylinder I5. The rod 28 is disposed coaxially of the auto-clave I0 and works through an open ing 3| in the side wall of cylinder I5. The ar through the openings 26 or 21, might prove dan gerous or at least annoying to the attendants serving those openings. In order to avoid this discharge ducts 39 are preferably provided in the rear wall of each oi the cylinders I5 and I5' through which the steam pressure may escape as each chamber approaches an opening 25 or 21. Various changes may be made in the embodi ment of the invention hereinabove specifically rangement is such that whenever one of the chambers 20 or 2| is registered with the throat I6, the piston 29 and rod 28 are actuated to push e described without departing from or sacriñcing the advantages of the invention as deiined in the appended claims. the contained mold through the throat and onto I claim: 1. The combination with an elongated vulcan the track or runway 32 in the auto-clave, and> as each additional mold is thus forced into the auto-clave it forces ahead of it the succession of molds previously admitted thereto. rl‘he molds are thus advanced step-by~step- through the auto» clave. The shuttles I9 in the cylinders I5 and I5' are actuated substantiallysimultaneously so that one 4 It will be noted that, as each chamber 28 or 2| passes from communication with the auto~clave I0, it carries with a charge of steam received therefrom, a charge which, if permitted to issue izing chamber containing steam under pressure, . of separate means for admitting articles to one end of said chamber and for withdrawing articles from the other end of said chamber without re leasing the steam pressure in said chamber, said article admitting means comprising a housing efrtending across an end of said chamber and hav», or the other of the chambers 2|) and 2| in the ing an intermediate side opening communicat latter is aligned with the auto-clave I0 and in a ing therewith, a member in said housing forming position to receive the leading mold of the suc two separate article receiving compartments cession of molds at each advance thereof through therein, said member being reciprocable to align the auto-clave. For instance, with the shuttle compartments with said opening alterna» I9 of cylinder I5' in the position shown in Fig. 1, 30 said tively, and means reciprocable in a direction the chamber 2| thereof is positioned to receive a lengthwise of said chamber for transferring ar mold from the auto-clave, as the succession of ticles from an aligned compartment to and molds in the latter are advanced by the pusher through said chamber. 28; and when this shuttle is shifted to position 2. The combination with an elongated vulcan the other chamber 20 in alignment with the auto izing chamber containing steam under pressure, clave, the chamber 2| registers with the opening of separate means for admitting articles to one 21 in the cylinder I5' through which the mold end of said chamber and for withdrawing articles within chamber 2| may be withdrawn. from the other end of said chamber without re~ The shuttles I9 may be actuated by any appro leasing the steam pressure in said chamber, each priate means. In this instance each is hydraul of said means comprising a housing extending ically actuated by a piston 33 or 33’ arranged in across an end of said chamber and having an in a cylinder 34 or 34’ mounted on and extending termediate side opening communicating with said lengthwise of its cylinder I5 or I5’. Each piston chamber, a member in each housing forming two shown is provided with tail rods 35 separately separate article receiving compartments there45 connected to the opposite ends of the shuttle I9 ' in, each of said members being reciprocable to through cables 36 trained over suitable pulleys align said compartments with said opening alter~ 31. Liquid under pressure from an appropriate natively, and each of said housings having addi~ source 38 is supplied to both cylinders under tionalopenings affording access to said comparte control of a suitable valve 39 in such manner that, ments alternatively, and means reciprocable in a with the valve in one position, the two pistons 50 direction lengthwise of said chamber for ad 33 and 33’ and their connected shuttles I9 are vancing articles from an aligned compartment simultaneously actuated in opposite directions, into and lengthwise of said chamber. and in the other position of the valve both are 3. 'I‘he combination with an elongated vulcan simultaneously actuated each in a reverse direc izing chamber containing steam under pressure. 55 of separate means for admitting articles to one tion. It will of course be understood that the steam end of said chamber and for withdrawing articles pressure within the auto-clave III is continuously from the other end of said chamber without reM maintained, this being rendered possible by the leasing the steam pressure in said chamber, each means provided for admitting and discharging the oi said means comprising a housing extending molds without opening the auto-clave. By reason 60 across an end of said chamber and having an in of this arrangement the vulcanizing process is termediate side opening communicating with said continuous, each mold being subjected to the chamber, a member in each housing forming two direct head of the steam throughout its passage separatearticle receiving compartments therein, from its charging chamber 20 or 2| to its dis each of said members being reciprocable to align 65 charge chamber 20 or 2|, the vulcanizing period said compartments with said opening alterna« for each mold being determined by the time con tively, and each of said housings having additional sumed during that passage and consequently by openings affording access to said compartments the length oi the auto-clave and by the frequency alternatively, means for simultaneously recipro of operation of the charging and discharge means. cating said members, and means reciprocable in In order to shorten the vulcanizing period for 70 a. direction lengthwise of said chamber for ad some special molds an auxiliary discharge unit vancing articles from an aligned compartment similar to that above described may be provided into and lengthwise of said chamber. intermediate the ends of the auto-clave or be E. J. voN DER HEIDE‘. tween sections thereof and operable to discharge those particular molds at an intermediate point.