US2386383A - Controlling mechanism - Google Patents

Description

Oct. 9, 1945. H. C HM Q 2,386,383

CONTROLLING MECHANISM Filed May 26, 1945 3 Shets-Sheet 1 A gufi I I j ,1 y L. H. CUSHMAN 2, 8

- CONTROLLING MEGHANI SM Filed May 26, 1945 v 3 Sheets-Sheet 2 Figcz 60 P? a l Oct. 9, 1945. H. CUSHMAN 2,386,383

CONTROLLING MECHANI SM Filed May 26, 1945 s Sheets-Sheet s -a predetermined movementof a machine- Patented Oct. 9, 1945 ;UNITED- STATES ,PATENT "OFFICE 1 CONTROLLING MECHANISM v I I Lee H. Cushman, Hamilton, Mass, assignor to United Shoe Machin ery Corporation, Flemington, N. J., a corporation of New Jersey Application MayZfi, 1943, Serial No. 488,608

' 6 Claims. n. 12-17) This invention relates to means for producing ele 'ment, as a gage in a shoe machine.

In machines of. the character of that made the subject of Letters Patent of the United States I No. 1,118,484, Fowler, November 24, 1914, a shoe mounted upon a support is movedfunder-the guidance of gaging means, through a path which presents the periphery of an attached sole to tools acting upon it. At difierent parts of said periphery, it is desired that a tool shall act'differently, as to vary the extension of the margin of the sole "from "the upper. An object of my invention is to produce such movement of a machine element by simple, compact and positively acting fluid-pressure mechanism. This object I attain bycombining with an element which is to have a predetermined movement'in engagement with the work during each operating cycle ofthe machine of which it is a part, a servo-motor having an element connected to move the machine element and including a valve provided by "two members movable relatively to each other to controlsaid servo-motor, and means acting under-the power of-the machine for imparting to the'valve members their controlling cycle of relative movement for each operating cycle of the machine. The element moved is shown herein as the upper gage of a rounding" and channeling machine, which is shifted with reference to a crease-gage to present the attached sole'difierently to the means for operating uponit. The motor with its valve mechanismis-made' the subject of a divisional application filed in the United States Patent Officeon August 3, 1944, and bear- .ing the Serial No. 547,943.

In the accompanying drawings,

Fig. 1 shows in side elevation my improved organization as part ofa rounding and channeling machine for shoe-soles;

Fig; 2 is a central vertical longitudinal'section through the controlling mechanism thereof;

Figs. 3 and 4 are transverse sections on the linesIIIIII and IV--IV, respectively, of Fig. 1 for a particular angular position of the valvesleeve;

Figs. 5 and 6 are similar views on the lines VV and VIVI, respectively, ofFig. 1 for another position of the valve-sleeve;

Figs. 7 and 8 and Figs. 9 audio are transverse sections on the same planes as Figs. 3 and 4 and Figs. 5 and 6, respectively, for still other positions of the valve-sleeve; l i Fig. 11 is a plan view of a shoe-sole with the angles indicated about its periphery, at which changes in the projection of the edge from the uppermay occur and also at 10 intermediate points;"and

Figs. 12, 13, 14'and 15 are diagrams showing the relation between the angular movement of the effective work, the valve-ports and the valvesleeve-openings, and corresponding, respectively, tothe valve-positions appearing in Figs. 3 and 4, Figs. 5 and 6, Figs. 7 and 8, and Figs, 9 and 10.

In the machine of the previously mentioned patent, to a jack or shoe-support I0 is imparted a combined movement of rotation and translation, by mechanism a portion of which is shown at A. This advances the margin of a sole s at-- tached to ajacked shoe S to receive the action of a constantly rotated rounding cutter or knife 12, and, that of a channel-knife l4. With'the channel-knife is associated a presser-foot I6, which is moved vertically to throw the knife into and out of action. The path of the sole-margin, as it advances past the operating tools, is more exactly determined by a crease-gage I 8 and an upper-gage 20. The gage I8 is furnished by a horizontal plate, the reduced outer edge of which is adapted to enter the crease between the upper and thesole of the shoe, and is mounted for vertical adjustment on a sleeve 22, which may be fixed in different positions upon the machineframe. It is shown as so engaging the cutterhub, that the cutter I2 is adjusted with it. The body of the gage 20 may consist of a bar 24, pivoted at 26 to mechanism to be hereinafter described, it being guided by a slotted connection 28 to the tical adjustment of the latter. At the same time, its rearwardly curved upper-engaging portion 20 may be moved longitudinally into difierent relations to the crease-gage.

It may be desired that the sole-edge, as it is rounded by the cutter l2, shall project different distances from the upper. This variation in the sole-extension may be obtained by shifting the upper-gage outwardly or inwardly. In the present instance, it is assumed that the shank-portion of a sole-margin at opposite sides is to be narrower than that at the heel-seat and forepart. The controlling means of this invention efiects the desired positioning of the work by fluid-pressure mechanism '3, which comprises, as a unitary structure, a servo-motor by which the gage 20 is actuated and a valve by which it is controlled. Supported upon the frame of the machine is a casing 40, through the wall of which and spaced from each other longitudinally are inlet- ports 42 and 44, lying in the same vertical crease-gage so it may share in the vera 10 to the cam-shaft 12 of the machine controlled..

The atio f e earing is such that the valvesleeve is rotated through 360 for each operat 7 ing cycle of the machine, or whilethe cutter i2 is rounding the entire peripheryofthe 'so'lelis of a jacked shoe. In the valve-sleeve are pairso sets of openings which, in the rotation, successively register with corresponding.casing-portsi The 5i inlet-openings l4 and 16, which co-operate with the port 42, are elongated, each occupying about 1'80of the circumference of the sleeve. The remaining openings maybe of substantially the same area as the ports, the inlet-openings l8 and 80 corresponding .to the port. 44,- and the outletopenings Hand 84 and BB and 88 tothe ports 50 and52, respectively. Within the sleeve58'a pistonBB is reciprocable, its'rod 92 bein uided in the sleeve-hub 60 and at the opposite end in the head of the casing 40. 170-2. terminal-portion 94. of -.the; rod the upper-gage .20,-.24 is pivoted atli. The movement of the gage toward the work is limited by a nut 9.6, threaded upon the outer end of therodSZ and contacting with; the outeriace-of the gear 62 upon the hub 60. In the opposite direction, the engagement of the terminal 94 with theorising-head determines the extent of travel. The; piston 90, together with the valve-sleeve 58, furnishes a servo-motor which; governed by its- valve 40, 58,; will apply power to the upper-gage 20 to shift it in opposite directions, and thereby impart to thesole s-of a jacked shoes the desiredchangesin contour.

, For the purposes-of this description, the form ofthe sole may be as previously indicated-a less projection ofthe edge; from the upper at the Opposite sides of the shank than at the heelseat and forepart. Considering, as appears in Fig! 11, the zero point in therotation of the soleedge to be atthe center of the rear of the sole, which is; turning in the direction of the arrow, the narrower projection will be between 80 and 100 and between 260 and 280 of this rotation, with the wider margin from 100 to 260 at the forepart, and-from 280 to 80 at the heel-seat. In each of Figs- 12,. 13, 14 and. 15 is shown diagrammatically the relation between the active ports inthe casing 40 and the cooperating openings in the valve-sleeve 58,- the positions to which the piston 98 is carried :by,theresultingmressure,and the angles in the. rotation of the.sole. .The latter are designated by the line :0, which may be considered as indicating the. point ofoperation-of the cutter [2. Each figure is based upon a development of the valve-sleeve, which is divided transversely by lines each indicating 10 of rotation of, the solev and valve-sleeve. Assume the jack ID to have rotated through 280, and that there is to occur thechange from the narrower shank to the widerheel-seat margin. At this time. as appears in Fig. 12, the. sleeve-opening. 14 will havearrived at the; inlet-port 42 (Fig. 3), while the sleeve-opening 82,. (Fig. 4) will. register with the outlet-port 50 (Fig; 4). Oil under p es sure will be suppliedto theJight-hand end of the sleeve 58 (Figs. 1 a ndv2) ,..which furnishes a cylinder for the piston 90 of the servo-motor,

as well as a portion of the valve. This forces the.

..-the sole. During the succeeding 160 of rotation of the Work and 90 of rotation of the valvesleeve. although the outlet-port 50 has been closed by the pas sing.of the valve-sleeve-opening 82, he.IongatedsleeVe-opening 14 will hold the upprgag' e. firmlyout in thedesired relation. At inthe rotation of the jack beyond the zero-pointi(Eig; "13), the sleeve-openings 18 and 86 respectively reach the inlet-port 44 (Fig. 5) and the outlet-port 52 (Fig. 6), the port 42 having-been; closed-by: the passing of the sleeveopening 5145 Pressure is applied to the opposite side of the piston-190 .towretraot the upper-gage until thezr'od-terminal 94 strikes the casing-head. This so withdraws the gage 20 that the jack mechanism? carries the shoe in until the crease is seateduuponzthe gage"l8,- the upper-gage 20 becoming ineffective. .A narrow'edge results, and no continued fluid-pressure. need be exerted at this time-to hold the upper-gage in place,'the workritself effecting this. 20 more of rotation of .the-sole having occurred, the elements areas appears in Fig. 14- The arrival of the sleeveopening 1 E:at.theinlet-port 42 (Fig. 'l) and the sleeve-opening 84 at .t-he=%outlet-port 50 (Fig. 8) creates conditions similar to those of the first period. ".The resulting pressure upon the piston again urges the gage 20 out to remove the work from=the gagezltl; and thus widen the soleedgehaboutthe forepartbetween and 260 ofwork -rotation. Finally, as may be seen in Fig. -15,-the narrowing edge at the shank between 260:and128050f'work-rotation is produced by the withdrawal of the'upper-gage by pressure applied to the-piston :90 :through the inlet-port 44 and sleeve-opening 80 (Fig. 9)=,.and exhaust is permitted through the sleeve-opening 88 and the outlet-port 52 ,(Fig. 10). An'operating cycle of the: machine has thus been completed; It will be seen that throughout this cycle. the work and the valveesleeve-rotate-in synchronism, and that, by a correct location of the ports and co-operating openings fonany'period ofaneular movement of the valve sleeva-a machine-operation may be producedat the time and of the duration desired.

Having described my"invention, what I claim as new and desire: to'secureby Letters Patent of the United States: is:

element for operating upon 'the work and having; a:.predetermined movement in engagement with z'said vvork during 'each' operating cycle of the machine, a servo-motor having an element connected to move the machine element and also including a valveprovided by two members movable relatively to each other to control the servomotor; and means acting under the power of the machine; foreimpartingto the:valve members a controlling cycle of relative'movement for each operating cycle'of the machine:

i. :2. :In combination, a machine provided with an element foroperating upon the work and having a predetermined movement inengagement with said-Work; during each :operating cycle. of the machinee-a'. rotatable valve-cylinder provid d a shoe, a gage by which the shoe is positioned for the operation upon it, and fluid-pressure mechanism for moving the gage to present the shoe differently to the operating means, said mechanism including a valve movable under the power of the machine through a gage-controlling cycle for each operating cycle of the machine.

4. In a shoe machine, means for operating upon a shoe, a gage by which the shoe is positioned for the operation upon it, a casing, a valve-sleeve rotatable in the casing, the casing being provided with inletand outlet-ports and the sleeve with openings movable into registration with the ports, and a piston movable in the sleeve and connected to the gage.

5. In a sole-rounding machine, a rounding outter, a shoe-support, means for moving the support to present the periphery of the sole of a supportedshoe to the cutter, a crease-gage for guiding the shoe during a portion of the operation, an upper-gage by which the shoe is guided during another portion of the operation, and fluid-pressure mechanism arranged to move the upper-gage both into and out of active position during each operating cycle of the machine.

6. In a sole-rounding and channeling machine, rounding and channeling cutters, a shoe-support, means for moving the support to present the periphery or" a sole to the cutters, a crease-gage for guiding the shoe during a portion of the operation, an upper-gage by which the shoe is guided during another portion of the operation, fluidpressure mechanism by which the upper-gage LEE H. CUSHMAN.

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