Патент USA US2125513код для вставки
Aug. 2, 1938. - w. H. MARTIN 2,125,513 v FLUID PRESSURE INDEXING VALVE Filed'Aug. 20, 1936 6 /‘ I ,2 Sheets-Sheet 1 55 5 r0 15 5 _ I ‘ ' ‘(025mm ? Via/cam Aug. 2', 1938- w. H. MARTIN I ' 2,125,513 FLUID PRESSURE INDEXING VALVE Filed Aug. 20, 1956 > / \ - \ \\ \ / 2 Sheets-Sheet 2 \ _ Q \\ M11117"? 61 "~' a g8, Patented Aug. 2, 1938 ‘ 2,125,513 I UNITED STATES PATENT OFFICE 2,125,513 FLUID PitESSUBE INDEXING VALVE William H. Martin, Detroit, Mich. Application August 20, 1936, Serial No. 97,007 12 Claims. (Cl. 60—54.5) My invention has for its object to provide an automatic indexing valve for causing by ?uid pressures sequential or periodic operations of elements or devices or parts of apparatuses‘ or ma _5 chines controlled by the elements. Thus, by my invention, a plurality of welders for welding parts together may be suitably mounted and sequentially operated. Similarly the ‘invention may be used to produce sequential 10 stamping of a large number of parts or sequen tial riveting of a plurality of parts or the se The moving parts of the valve 1 are enclosed in a shell 6. The walls of the shell have open ings and passageways that communicate with the pressure means 2 and the pressure devices 3. A rotatable disc ‘I having a diameter substan 6 tially the same as the diameter of the interior surface of the side wall of the shell 6 is located upon a raised bearing surface 9 formed on the bottom of the shell. The underside of the disc 1 is provided with a circular recess ll forming a peripherally disposed ?ange part or rim l2hav quential or timed operations of a machine or the ing a bearing surface II that is located on the simultaneous operations of groups oI-‘controlled bearing surface 9. The contacting surfaces of the disc and the bottom are preferably ground to produce substantially an oil seal between the 16 chambers i6 and I1 formed by the disc within devices. ' The invention'may be contained in structures of different forms and used for a great variety of purposes. To illustrate a practical application of the invention, I have selected an indexing, valve as an example of the various structures that 20 contain the invention and shall describe the 15 structure selected hereinafter. The indexing valve is illustrated in the accompanying draw the shell. Each of the pressure devices is connected by means of a pipe ID with a passageway l9 extend ing through the wall of the shell l and communi ‘ ‘eating with the chamber H. The openings I! are located in the raised bearing surface I and within the inner perimeter of the annular rim l2. . Fig. 1 illustrates a top view of the indexing The pressure means 2 is connected to the cham ber ii of the valve by means of the pipe 2| valve and indicates diagrammatically its con through which its actuating pressure is trans nection in an apparatus having parts that are mitted to the valve. The chamber I1 is con sequentially operated by a ?uid pressure means. Fig. 2 is a side view of the valve shown in Fig. 1. nected with the pressure means 2 by means of a pipe 22 to return the oil to the pressure means. Fig. 3 is a view of a section of the valve taken 30 on the plane of the line 3-—-3 indicated in Fig. 2. ‘ The pipes 21 and 22 are preferably centrally con nected to the top and bottom walls of the valve. Fig. 4 is a view of a vertical section of the valve. The valve l is automatically operated by a The disc ‘I is provided with an opening 23 located in a boss extending inwardly from the annular ?uid pressure means 2 to connect the pressure means to the pressure devices '3 and produce rim l2 and so as to be located in registering rela tion with the passageways it in succession upon 35 operations of one or more of the pressure devices rotatlve movement of the disc. Thus, when the upon rise in pressure of the pressure means. opening 23 registers with any one of the open . Preferably, oil is used as the pressure medium. It ?lls the interconnecting passageways that] d ings IS, the rise in pressure of the pressure means 2 is transmitted through the oil-located in the from the pulsating pressure means 2 to the va ve pipe 2|, the chamber It, the opening is, and 40 l and from the valve to the pressure devices 2. The pressures produce periodic ?ow of small the pipe It to the particular pressure device 3 with which the connection is established and quantities of the oil from the pressure means 2 causes the pressure device 3 to perform its par to the valve l and from the valve l'to one or ticular function by the pressure that is trans more of the pressure devices 3. Upon reduction mitted to it. Thus, the pressure devices may be 45‘ of the pressure of the pressure means 2, oil is returned to the valve and the pressure means by sequentially operated, or may be operated in any the return movement of the just previously oper-. desired order or in groups according to the con trol element or a step by step mechanism that ated pressure device or devices. If desired, means may be provided for controlling the length may be used in rotating the disc and according to the connections between the pressure devices 50 of the high or rising pressure periods or the intermediate low or. reducing pressure periods. and the indexing valve. In the form of construction shown, the disc ‘I Also operations of the pressure devices respon ings. sive to the pressure means may be separated by one or more periods of high pressure produced 55 by the pressure means. 30 - 45 50 is moved step by step to produce registration of the opening 23 with the passageways IS in succession ‘and corresponding sequential opera 65 Z '2,125,518 tions of the pressure devices 3. A piston 28 is also an outward movement of the piston 26. slidably supported in a cylinder 21 located in the valve. The‘cylinder 21 may be provided with a ?anged head 28 that fits within a boss 28 tan- Upon reduction of the pressln'e, the piston 25 which has been outwardly pressed during the ' gentially protruding from the cylindrical side wall of the shell 6 to locate the aris'of the piston parallel and in proximity to a line tangential to the disc ‘I. The cylinder-21 is secured to- the ' shell 6 by means or the screws ii that extend through the ?ange part of the head 28 and into the boss 29. The exterior diameter of the cyl inder 21 is considerably less than the interior pressure period is moved inward by the pressure of the spring 32. The dog having engaged a se quentially disposed tooth x§I moves the disc ‘I a short distance upon its return movement. The disc ‘I first operates to establish return connec tion for the oil, from the pressure device 3 to the chamber i1 and through the pipe 22 to the pres 10 .sure means 2. This releases the pressure in the pressure device. The piston of the pressure diameter of the boss 2! which forms a recess in ‘device is pressed outward by the spring 54 and which is located a spring 32. IZ‘he spring 22 is 'when the oil pressure is reduced, the spring 54 located intermediate the head is of the cylinder of the pressure device 3 causes the return of the 15 I'l’and a pair of adjustable locknuts 33 located piston of the pressure device and discharge of the ' on'one end of an enlarged part ll of the piston - oil from its cylinder which causes a return move 26. The spring 32 is a compression spring and‘ ment of the oil along the pipes l8 and 22. Upon operates to resiliently return the piston 26' when the completion of the return stroke of the pisten 28, the opening 23 is brought into registration 20 it is forced outwardly by the hydraulic pressure produced in the chamber it of the valve l by with another of the openings i9 which establishes _ the pressure means 2. The piston is guided in connection between the pressure means- 2 and its movements not only by the cylinder 21, but another of the pressure devices 3. ' - Upon production of succeeding changes in pres sure, the pressure devices are sequentially con also by an inwardly projecting boss" through 25 which the piston extends. I ._ Lock nuts I: are threaded on to an ‘end por nected and operated to produce riveting or weld tion ll of the piston and on the side of the boss 36 opposite to thet'on which the lock nuts-ll are ing or timed eperations of a machine or apparatus located. or other i'unctions for which they may be designed Thus, the lock nuts 33 and 39 may be . or peculiarly constructed. adjustably located with reference to the boss ii to adjust the extent oi’ the stroke that may be made by the piston, both as to its outward move ment relative- to the disc 1 and the shell pro duced by the hydraulic pressure and also as to its 35 inward return movement produced by the pres sure of the spring 32. ~ The enlarged part E1 of the piston 26 is pro ' vided with a recess 44 in which is located a dog 1 1. In 'a ?uid pressure indexing valve having two chambers, a plurality of pressure devices con nected to one chamber, a pulsating pressure means connected to the other chamber, a movable mem ber having a passageway for selectively closing 35 the connection of each pressure device with the . said one chamber and connecting it with the said other chamber to produce operation of the pres 46 that is spring pressed by means of the spring . sure devices at least one at a time by the pulsating 40 41 located intermediate the bottom of the re cess H and the nose of the dog (8. The dog pressure of the pressure means. 2. A ?uid pressure indexing valve having a pair It is pivotally supported by the pin 48 and is of chambers, a plurality of pressure devices con pressed towards the periphery ofthe disc ‘I. It ‘ nected to one of the chambers, a pressure means extends through a slot 48 icrmed in the boss connected to the other of the said chambers for producing pressure in the said other chamber and 45 38 and prevents rotation of the piston about, its to the said one chamber for withdrawing ?uid The disc 1 is provided with a ‘plurality of fro-m the said one chamber,. a movable member ratchet teeth II spaced about the axes of the for connecting the pressure devices with the said axis. , > _ I disc the same angular distance that the open 50 ings'l9 are spaced from each other. The stroke of the piston 26 is adjusted by the lock nuts 33 and I! to produce engagement of a tooth II by the dog 46 upon each succeeding return movement of the piston. Preferably the angular movement of the disc ‘I produced by the piston is such as to cause registration of the opening , 23 with the openings l9 sequentialh to produce . sequential operation of the pressure devices 3. The cylinder 21 may be connectedat its outer 60 end with the return pipe 22 to’ draw from the cylinder any oil that may pass the piston dur 'ing its operation. "' In the operation or the indexing valve, the pressure means 2 which is constructed to pro 65 duce pulsating pressure in the oil ?lled passage ways 01 the apparatus may'comprise a single cylinder pump having a cylinder 4 and a recipro cahle piston 5. The cylinder 4 receives oil from the reservoir Ill through an opening it when‘ 70 uncovered by the piston 5. The piston I may be operated by any suitable motor or other actue ating means 53. Each pulsation will cause oper~ ' ation of the pressure device 2 having a piston l5 and a cylinder 20 to which connection is cs7 75 tablished through the openings 23 and I8 and other chamber for operating the pressure devices and subsequently restoring the connections of the pressure devices with the said one chamber for returning the. ?uid to the said pressure means. 3. A ?uid pressure indexing valve having a pair or chambers, a plurality of pressure devices con- ' nected to one of the chambers, a pressure means cennected to the other of the said chambers ior producing pressure in the said other chamber and to the said. one chamber for withdrawing oil from ‘the said one chainber, a movable member for con necting the pressure devices with the said other chamber for operating the pressure devices, means > operated by the pressure means for actuating‘ the movable members and subsequently restoring the connections of the pressure devices with the said one chamber for returning the ?uid to the said I pressure means. . 4. In a ?uid pressure indexing valve, a mov--v able member taming two chambers within the valve, a-plurality of pressure deyices connected to one of the said chambers and a pulsating "' pressure means connected to the other of the said ' chambers for producing pulsating pressures in the said other chamber, the movable member having a passageway for connecting the connections of the pressure devices with the said other chamber 75' 3 9,125,513 in succession for sequentially operating the pres sure devices by the pulsating pressures produced and to the said one chamber for receiving ?uid by the pressure means. ber operated by the pressure means for connect ing the pressure devices with the said other cham from the said one chamber, and a movable mem mm a ?uid pressure indexing valve, the valve having a movable member forming two chambers, ‘ her to operate the pressure devices and to subse a plurality oi pressure devices connected to one quently and sequentially connectthe precedingly chamber, a pressure means connected to the other chamber, means for operating the pressure means to- produce a pulsating pressure, a resilient means 10 operated by the pressure means for moving the member during low pressure periods to connect the said connections of the pressure devices with the said other chamber in succession and produce operation of the pressure devices by the pulsating pressures sequentially during high pressure peri .15 ods of the pulsating means. . 6. In a ?uid pressure indexing valve, a movable member forming two chambers within the valve, a plurality of pressure devices connected to one of 20 the said chambers and a pulsating pressure means connected to the other of the said chambers for producing pulsating pressures in the said other chamber, the movable valve member having a passageway for connecting the pressure devices producing alternately high and low ?uid pres sures, and means operated by the pressure means ' for connecting the pressure devices with the pressure means during the low pressure periods to sequentially operate the pressure devices dur ing' the succeeding high pressure periods and to connect the pressure devices with the pressure means during the low pressure periods to return the ?uid from the pressure devices in the low pressure periods to the pressure means. 20 11. In a ?uid pressure apparatus, a plurality of pressure devices, a cylinder and piston, a reser voir for liquid communicating with one end 0! sequentially operating the pressure devices by the the cylinder, means for reciprocating the piston, the cylinder having a passageway opened by the 25 piston upon the completion of its non-working pulsating pressures produced by the pressure stroke and closed upon the initiation 01 its work ' with the said other chamber in succession for 25 operated pressure device with the said one cham ber for returning the ?uid to the pressure means. 10. In a ?uid pressure apparatus, a plurality of pressure devices, a ?uid pressure means ‘for means, and means operated ‘by the said pressure means for actuating the movable member. 7. In a ?uid pressure apparatus, a plurality of 30 pressure devices, a ?uid pressure means for pro ducing changes in ?uid pressure, and a resilient means operated by the pressure means during high pressure periods and operative to connect the, pressure devices in succession with theplies ing stroke, an indexing valve having two cham bers, the reservoir and a. plurality of pressure de vices connected to one chamber and the cylinder connected to the other chamber, and a movable member having a passageway for disconnecting the pressure device with said one chamber in suc cession and connecting them with the said other chamber to produce operation oi.’ the pressure de 85. vices in succession during the high pressure pe~ riodsproduced by the piston and for connecting pressure means during the high pressure periods ~ the precedingly operated pressure device with the following each low pressure period. said one chamber to return the ?uid to the reser sure means during the low pressure periods to sequentially operate the pressure devices by the 8. In a?uid pressure apparatus, a plurality of pressure devices, a ?uid pressure means for pro 45 ducing means for producing changes in ?uid vices during succeeding high pressure periods and pressure, a ?uid pressure operated means oper the ?uid from the pressure devices to the pressure 55 vice by the pressure produced by the piston. ducing pressure pulsations in the ?uid, and means‘ operative during low pressure periods for con necting the pressure devices to the pressure means to sequentially operate the pressure de ' to connect the precedingly operated pressure devices with the pressure means for the return of so voir through the said one chamber during the pe riod-iollowing the operation oi the pressure de means. 9. A ?uid pressure indexing valve having a pair of chambers, a plurality of pressure devices connected to and having means for returning 12. In a ?uid pressure apparatus, a plurality of pressure operated devices, a ?uid pressure pro ated by the ?uid pressure produced by the pres sure producing means during high pressure pe riods, and means coacting with the pressure oper ated means for connecting the pressure operated 50 devices in succession with the pressure producing means during thellow pressure periods to sequen ?uid to one of the chambers, a pressure means tially operate the pressure operated devices by the pressure producing means during the high pres connected to the other oi.’ the said chambers for sure periods following each low pressure period. _.producing pressure in the said other chamber ' , WILLIAM H. MAR'ITN.