US2424415A - Sole roughing machine - Google Patents

Description

vJuly 22, 1947. A. Isl-:Rm

' soLE. ROUGHING MACHINE Filed om.A 1e, 1946 :s sheets-sheet 1A July 22, 1947. A. FERRI K sc mi"I ROUGHING MACHINE s sheets-sheet '2 Filed 001;.` 16, 1946 INVENTOR.

July 22, 1 947. A. PRRI SOLE ROUGHING 'MACHINE sheets-sheet sI Filed Oct, 16, 1946 INVENTOR.

Patented July 22, 1947 SOLE ROUGHIN G MACHINE Angelo Perri,

Shoe Machinery Cor poration of Massach Groveland, Mass., assignor to Allied p., Haverhill, Mass., a corusetts Application October 16, 1946, Serial No. 703,535

9 Claims.

This invention relates to improvements in roughing machines and more particularly machines for roughing the marginal region of a shoe sole element preparatory to cementing the element in place in a shoe structure.

It is among the objects of the invention to provide a roughing machine wherein the work, such as a shoe sole, is automatically fed and guided to advance a marginal region of the work progressively to roughing position, all around the edge of the work, and wherein the roughing is accomplished by the action of roughing elements travelling generally in the plane of the surface which is being roughed.

Another object is to provide a roughing machine for roughing a marginal region of a work element, all around the element, and having provision for leaving an un-roughed narrow band at the extreme edge of the work element.

Yet another object is to provide a sole element roughing machine having a pair of feed wheels rotating in opposite directions on angularly related axes with a pair of guides for the edges of the sole element against both of which the sole element is urged edgewise by the feeding coaction of the angularly related wheels and against one of which the sole `element is additionally urged edgewise by a roughing member rotatably engaging the marginal region of the sole element as the element is advanced between the feed wheels.

A further object is to provide a sole element roughing machine having a pair of work feeding wheels rotating in opposite directions on angularly related driving shafts of which one is adjustably biased toward the other for engaging the margin of a sole element between them, with the angularly related wheels coacting for advancing the work and with one wheel urging the sole element laterally simultaneously with its advance.

Still another object is to provide a sole element roughing machine having means for roughing a marginal region of a sole element, and including means for adjustably spacing the roughed area inward from the edge of the-sole element.

It is, moreover, my purpose and object generally to improve the structure and eifectiveness of roughing machines and more especially Inachines for roughing the marginal regions of shoe sole elements.

In the accompanying drawings:

Fig. 1` is a front elevation of a roughing machine embodying features of my invention;

Fig. 2 is a top plan view of the machine of Fig. 1;

Fig. 3 is a cross-sectional View approximately on line 3-3 of Fig. 2

Fig. 4 is a cross-sectional detail, on a larger scale, of the adjustable roller which engages under the work;

Fig. 5 is a cross-sectional view approximately on line 5 5 of Fig. 1, on a larger scale;

Fig. 6 is an enlarged cross-sectional detail of one of the adjustable guide rollers which engage the edge of the work;

Fig. 7 is a perspective view, somewhat diagrammatic, of one of the pivoted roller-carrying arms which engage the upper surface of the work;

Fig. 8 is a bottom plan view of a shoe sole element having its marginal region roughed, and showing a narrow band of un-roughed surface at the eXtreme edge of the element;

Fig. 9 is a fragmentary' cross-sectional View on line 9-9 of Fig. 8; and

Fig. 10 is a detail cross-sectional View through the work at the roughing position, and showing a sole element having a skived upper marginal surface.

Referring to the drawings, any suitable support I0 may serve for mounting the hollow casing I 2 from which the relatively large diameter conduit I4 leads to a suitable suction means (not shown) which creates a partial vacuum in casing I2 for removing dustand waste matter from the region where a marginal portion of a sole element is roughed by means and in a manner which presently will be described.

Casing I2 includes the upper rectangular relatively shallow portion I6 within which the shaft I8 extends, with a feed wheel 20 on the forward end of the shaft for engaging the under margin of a sole element S. The portion I6 of the casing has a top opening which is closed by a removable cover plate 22, and this plate 22 constitutes the work support at the roughing region and has a relatively large slot 24 through which feed wheel 20 operates to engage the work.

Toward the rear of the machine, the shaft I8 has universal connection at 26 to a short shaft 28 which extends into and is journaled in the walls of a gear housing 30 suitably mounted at the rear end of the casing. Short shaft 28, interiorly of housing 3l),J has iixed thereon a worm gear 32 meshing with a Worm 34 oma shaft 36 which extends out of housing 3l] and which has a pulley 38 on its outer end. An electric motor 40 is pivotally supported on casing I2 at 42 and is adjustable on pivot 42,-by means of the adjusting screw 44. The :motor shaft 46 has a pulley 48 3 thereon for driving worm 34 through the medium of belt 50.

The extreme forward end of shaft I8 is mounted in the adjustable eccentric bearing 52, as best seen in Fig. 3, the bearing having an annular groove 54 within which the set screw -56 engages for securing the bearing against axial displacement and by which the bearing may be fixed in any adjusted setting, the bearing having a knurled head 53 by which it may be manually rotated when the set screw 56 is loosened. With this construction, the forward end of shaft I8 may be raised or lowered for precision setting of the feed wheel 20, the universal connection at 26 permitting needed adjustmentsv at the forwardl end of shaft I8 without interfering with the drive of the shaft I8.

A feed wheel 68 is positioned for coaction with feed wheel 20 in feeding a sole element S engaged between them. Wheel ,60 is fixed on the forward end of a shaft 62V whose-'rear end has a universal connection at 64 to a short shaft 66 which is similar to short shaft 28 and which has the worm gear 68 xed thereon interiorly of housing 30 and meshing with the worm 34, whereby shaft 62 is rotated in direction opposite to the direction of rotation of shaft I8.

It is a feature of the invention that the shaft `62 has its forward portion extending through a bearing 1|) at the forward end of an arm 12 which is pivotally mounted at 14 on ears 16 which are rigid on the gear housing 30. Arm 12, at its rear end,-has an ear 18 rigidly upstanding thereon in which the two-diameter pin 80 is rotatably mounted, with the larger diameter portion 80 at one side of the ear and Withthe smaller diameter portion 80l extending through and projecting at the other side of the ear.

A rigid upstanding ear 82 on gear housing 30 is in general alignment with ear '18 on arm 12, and has rotatably mounted therein the two-diameter pin 84 with the larger-,diameter portion 84 at one side of the ear and with the smaller diameter portion 84 extending through and projecting at the otherside of the ear. Two screws 86, 88 each extends throughboth of the pins 00, 82 at a different side of the ears 18, 82. Screw 86 extends slidably through pin 80 and is threadedly engaged through pin 84, while screw 88 is threadedly engaged through pin 80 and slidably engaged through pin 84. A nut 90 is adjustable on screw 86, betweenthe pins; and a spring 92 engages between the nut Yand pin 80, constantly biasing the arm 12 clockwise about its pivot 84, as viewed in Figs. 1 and 3, and the limit of clockwise movement of the arm is adjustably determined by the enlarged portion 89 of screw 08, atits head end, engaging the pin 84. Hence, mere rotation of screw 88 effects adjustment of arm Y'I2 to bring feed wheel 60 closer to or further from the coacting feed wheel 20. However, the arm` 12 is resiliently yieldable, against the bias of spring 92, in direction generally away from the wheel 20.

As clearly shown in Figs. 1 and 3, the shaft 82 may have considerable inclination relative to the generally horizontal 'shaft I8, and the periphery of wheel .60 is tapered so that its engagement with a sole element maybe a generally horizontal engagement notwithstanding the inclination of shaft 82. Wheel 2-0, on the other hand, preferably will have a generally cylindrical periphery with oblique teeth therein for urging the work lateral-ly simultaneously with the advance of the work between thc wheels, with the lateral thrust augmented to a substantial degree by the fact that the two work-engaging wheels rotate in opposite directions on angularly related axes.

A sole element S inserted between wheels 20, 60 is engaged at a marginal region of the element, and the course of the element is determined by the pair of guide rolls 94, 96 which engage the edge of the element as the latter advances between the wheels. Roll 94 may be arranged generally opposite the perpheries of the feed wheels so that the main forward advance of the work thrusts the edge -of the work against roll 94.

The other roll 96 may be positioned generally laterally beside the region of bite of the Wheels, and the previously described lateral thrust on the workv maintains the edge of the work against roll 96. As a result, after a sole element has been initially engaged between wheels 20, 60, it feeds automatically with the Wheels engaging progressively all around the margin of the sole element.

According to the invention, a sole element feeding between the wheels 20, 60 is roughed at the under side progressively all around the margin of the upper by a toothed roughing member whose teeth rotate in a plane generally parallel with the work surface which is being roughed. Referring more particularly to Figs. 3 and 5, a roughing member is indicated generally at 98, secured on the upper end of a vertical shaft |00 which is mounted in a yoke |02 and which has a pulley |04 thereon, within the yoke, belt driven from an electric motor |06. Roughing member 98, as shown, has generally cylindrical form, with its annular top edge provided with the cutting teeth or serrations |08. Member 98 is removably mounted on shaft |00 by means of the screw I'I0 projecting from the shaft and engaging in the bayonet slot |I2 in member 98. Yoke |02 has bosses |I4, IIB projecting from the respective arms of the yoke which provide bearings for shaft |00. The upper boss I4 projects slidably through the bottom wall of the forward portion of the casing, and the lower boss I6 is slidably supported in a bracket 8 which is secured to this bottom wall of casing,.as best seen in Fig. 5. A groove |20 in the bracket loosely receives a peripheral portion of the head |.I 2 of an adjusting screw |24 which is threaded into yoke |02, with a pair of pins |26 projecting from the bracket on opposite sides of the shank of the screw for steadying the latter. Rotationof the screw, with its head |22 restrained against vertical travel, effects adjustment of the yoke and of roughing member 88 toward orfrom the work to increase or decrease the roughing effect. By providing a split bearing for vtheboss ||6 of yoke |02, the yoke may be clamped in .any adjusted position by tightening the split-bearingby means of screw 'I I9.

Theroughingmem-ber 98 operates in the slot 24 inthe cover-plate work support 22. Its position inward .relative to guide roll 96 and outward relative-to guide roll 94. as best-seen in Fig. 2, and the `direction of its rotation, as indicated by the arrow in Fig. 2,combine tov create a relatively strong tendencyto rotate the work about the axis of the roughing member 98, and this tendency urgesthe edge of the work inv direction toward guide roll-96. vThe incidental tendency to swing the work away from guide roll 94 is over-borne by the action of the feed wheels 20, 60 whose main feeding effectis toward the guide roll 94. The cumulative effect of the feed wheels and roughing member on the work is to maintain the edge of the work strongly against guide roll 96 and against guide lroll -94,1but .With-the roughing :member Tactingwithirolli94 in guiding the leadingportion of the work.

Inasmuch-:as the froughing'member r98, working on `the under side ofthe work, tends to `liit .the workaway from support 2'2, Il provide one or'more spring-biased arms |28, eachwith aroller |30 at its end, for vriding `on 'the upper surface f the work and pressing the work` against support 22 in opposition I:to the lifting `tendency'of member 98. `Asilierein shown, 'two such arms |28'arepivotally mounted on a bracket I3-2, each `with Va spring |34 larijustably fbiasing its lroller carrying vend into'engagement'with the work. Fig.'7 :shows one of 'the arms |28 'witha laterally .projecting lug `1| 36 thereonthrough whicha screw |381loosely extends for `screwing into the bracket |32. The spring |34 engages between the head of theiscre'w and the 4lug |36., constantly biasing the arm 4and roller |3l| clockwise in Fig. 7. `The `biasing force may be adjusted bymeans .of screw |38. lAnother screw |40 is threaded through lug |36 with its lower end butte'd against bracket |32, l'for adjustably Vlimiting the clockwise movement of arm |28, with a lock nut |42 for locking screw |4Uiin anyparticular adjusted setting. With this construction, the'rollers "|30 effectively press the work against Asupport 22 K'when the upper and lower surfaces of the :engaged work are parallel "andV also when `the upper surface is skived, vas suggested in Fig. 10.

Preferably, also, `I;p'rovide a roller |44 (Figs. 3 and 4) for engaging the under side of vthe work adjacent tothe roughingmember 98, thereby to avoid any possibility of an edge of the work getting caught in the slot 24 when being introduced between 'the `ieed wheels. As `best seen fin Fig. 4, this roller |44 is conveniently carried at the end of anarm1`45 which is pivoted at |48 on the under side of cover yplate 22, with an adjustable screw |58 threaded through the arm and resting by gravity on a wall o'f the casing. The roller engages the work through tthe slot `24, Vand may be adjusted as to position by 4meansofscrew |50.

It lis an important 'feature of the invention that a marginalregion of asole elementma'ylbe quickly and effectively roughed all around the s`ol'e element without roughing'the extreme edge `'of the element which may be exposed in a shoe. In cemented shoes, the sole elements frequently are formed toaccurate shape prior 'to combining with an upper, so that the sole elements require no subsequent trimming or grinding. In such cases, it becomes importan-t that the edges which are to be exposed in ya shoe shall be smooth and iinished. My present roughing machine is adapted to eliectively rough a desired marginal region of a sole element while leaving a desirable bead or thin band of un-roughed surface at the extreme edge of the element, as represented in Figs. 8 and 9, where the roughed band is indicated at |52 and a narrow un-roughed bead or band is indicated at |54. With my rotary roughing member 98 acting on the work in a generally horizontal plane, the guide roll 94 may be set close to the circle of roughing action of member 98 for determining a width of edge surface which will not be roughed. In this connection, it should be noted that the roller 94 is mounted for minute adjustment relative to member 88. Fig, 6 shows roller 94 mounted on an eccentric bearing |56 which is mounted on cover plate 22 by means of a screw |58. By loosening screw |58 the eccentric |5|1 may by rotated to bring the periphery of the roller toward or from the peripheral circle of (i roughing Vmember' 98, thereby `'to vary-the width of'theun-roughed beadorband |54. Tightening of screw F58 secures lthe roller in any Aselected setting. The other roller 98 may 'be similarly eccentrically mounted for adjustment, if desired.

I `claim las -my invention:

`1. 1A roughing'machine comprising awork support having Ean 'opening therethrough at the roughing position, 'a `rotary `roughing `member mounted `on 'an 'axis Lgenerally perpendicular to the work 'support and operating in said opening in vthe Workrsupport for `engaging and roughing the under surface of work restingon the support, apair -of fco'actin'g lfeed wheels mounted on angularly vrelated axes-land Aarranged for engaging fa marginal -reg-ion of -the Work, means driving the feed Wheelsin Lopposite directions for advancing the 'work past said roughing member, and a pair of'guides foren'gaging-e'dge portions of the Work and arrangedforfguidingthe-course of the work, said roughing 7member rotating in direction 'to constantly urge-'the `work edgewise against at least one of said guides,

-2. 'Afro'ughing machine comprising a Work support `having Ian 'opening therethrough at the roughing position, la rotary roughing member mounted `on an taxis generally `perpendicular to the work support and operating 4in said opening in the work support -for engaging and roughing the under surface of work resting `on `the support, a pair of coacting 'feed wheels mountedon angullarly related axes and arranged for engaging a marginal region of the work, means driving the feed 4wlfie'els xin ropposite vdirections for advancing the work Apastsai'd roughing member, and a pair of guides for engaging edge portions of vthe work and `arranged for guiding `the course of the work, said -rough'ing member rotating in Adirection to constantly urge the work edgewise against at least `one of said guides, and one of said `feed Wheels 'being adjustably biased in direction generally toward A:the other feed wheel.

3. `A roug'hingrnachine comprising a work support h'a'ving `"opening therethrough at `the mug-hing position, a rotary roughing member mounted 'on an airis generally perpendicular to the work vsupport and operating in said opening in the work support for engaging and roughing the under'surface Vof work resting cn the support, a pair of coacting'ieed wheels mounted on angularly related axes -and arranged for kengaging a marginal region of the work, means driving the feed wneels in 'opposite directions for advancing the workpast said roughing member, a pair of guides :arranged in'spaced relation outward from said roughing member for engaging edge Aportions of the work and guiding the course of the work as it is advanced by the feed wheels, and means for setting one of said guides toward and from said roughing member for selectively predetermilning a width of surface adjacent to the edge of the work inward of which the roughing by said roughing member will occur, thereby to leave said predetermined width free of any roughing.

4. A roughing machine comprising a Work support having an opening therethrough at the roughing position, a rotary roughing member mounted on an axis generally perpendicular to the work support and operating in said opening in the work support for engaging and roughing the under surface of work resting on the support, means for adjusting said roughing member toward and from the Work to Vary its roughing effect on the Work, means pressing the work against said roughing member, a pair of driven feed wheels rotating in opposite directions on angularly related axes and engaging a marginal region of the work outward of said roughing member, a pair of guides outward of said feed wheels for enga-ging edge portions of the work thereby to guide the course of the work advancing between the feed wheels, said roughing member rotating in direction to constantly urge the work edgewise against one of said guides, and means for adjusting the other guide toward and from the roughing member for selectively locating the roughing any of various distances inward from the edge of the work.

5. In a roughing machine having a work support and a pair of coacting feed wheels driven in opposite directions for advancing a work element between the wheels, the combination therewith of a roughing member rotating on an axis generally perpendicular to the work support, there being an opening in the work support within which said roughing member operates with an end portion thereof rotarily engaging an under region of the work in a plane generally parallel with the plane of the work support whereby said roughing member tends to rotate the work about the axis of the roughing member, an edge guide arranged to restrain said rotational tendency of the work, and another edge guide generally in the path of the work for swinging the work about the first guide as an axis, thereby to guide the course of the work advancing between said wheels.

6. In a roughing machine having a work support and a pair of coacting feed wheels driven in opposite directions for advancing a work element between the wheels, the combination wherein one of said wheels is mounted on an axis angularly related to the axis of the other wheel, whereby a work element feeding between the wheels is urged laterally simultaneously with its advance between the wheels, a guide roller in .the path of advance of the work for engaging an edge portion of the work, said lateral urge maintaining said edge against the roller, a roughing member rotating on an axis perpendicular to the work support with an end portion thereof rotarily engaging the work and tending to swing the work away from said guide roller, and a second guide roller opposing the latter said swinging tendency of the work and constituting a fulcrum of swinging of the work as the first said guide roller directs the course of the work advancing between the feed wheels.

7. In a roughing machine having a work support with an opening therethrough, the combination therewith of a roughing member rotating on an axis perpendicular to the support with an end projecting through said opening into contact with a work element on the support, said contacting end of said member being adapted to rough the engaged surface portion of the work, a driven feed wheel rotating on an axis generally parallel with the work support and engaging a surface of the work through said opening, a second driven feed. wheel rotating in direction opposite to the direction of rotation of the first said feed wheel and on an axis inclined with respect to the axis of the rst wheel, means for varying the inclination of the axis of the second wheel, and a pair of guides for engaging edge portions of the work thereby to direct the course of the work element advancing between the feed wheels, said second wheel urging the work laterally toward at least one of said guides simultaneously with the main advance of the work.

8. In a roughing machine, a .work support having an opening therethrough at the roughing position, a roughing member rotating on an axis perpendicular to the support with an end portion projecting through said opening for contacting and roughing a work element on the support, a pair of oppositely driven shafts, each having a universal drive connection whereby an end of each shaft may be adjusted about its universal connection, a feed wheel on the adjustable end of each shaft for coaction in feeding a work element between them, means resiliently biasing one said wheel toward the other, the wheel-supporting end of one of said shafts being inclined relative to the wheel supporting end of the other shaft whereby the wheel on said inclined shaft urges the work laterally simultaneously with its advance between the wheels, and guide means engaging edge portions of the work element, at least one of which is positioned to have the work urged thereagainst by said wheel tending to urge the work laterally.

9. In a roughing machine, a work support having an opening therethrough at the roughing position, a roughing member rotating on an axis perpendicular to the support with an end portion projecting through said opening for contacting and roughing a work element on the support, a pair of oppositely driven shafts, each having a universal drive connection whereby an end of each shaft may be adjusted about its universal connection, a feed wheel on the adjustable end of said shafts for coaction in feeding a work element between them, and means for independent adjustment of each wheel toward and from the other, said adjustment for one wheel including biasing means constantly pressing that wheel in direction toward the other wheel.

ANGELO PERRI.

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