US1798316A - Feed mechanism for strip, rod, wire, and like material - Google Patents

Description

March 31, 1931- c. A. DREISBACH FEED MECHANISM FOR STRIP, ROD, WIRE, AND LIKE MATERIAL Filed June 4, 1929 5 Sheets-Sheet March 31, 1931. c. A. DREISBACH FEED MECHANISM FOR STRIP, ROD, WIRE, AND LIKE MATERIAL F'iled June 4, 1929 5 Sheets-Sheet 2 March 31, 1931.

c. A. DREISBACH 1,798,316

FEED MECHANISM FOR STRIP ROD, WIRE, AND LIKE MATERIAL Filed June 4, 1929 5 Sheets-Sheet 5 March 31, 193']. c. A. DREISBACH' FEED MECHANISM FOR STRIP, ROD, WIRE, AND LIKE MATERIAL Filed June 4, 1929 5 Sheets-Sheet 4 March 31, 1931. c A, DRESBACH 1,798,316

FEED MECHANISM FOR STRIP, ROD, WIRE, AND LIKE MATERIAL Filed June 4, 1929 v 5 SheetsSheet 5 MYW Patented Mar. 31, 1931 UNITED STATES PATENT; "OFFICE CHARLES A. DREISBACH, OF

NEW HAVEN, CONNECTICUT, ASSIGNOR TO S TANDARD RADIAL BLAST CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

FEED MECHANISM FOR STRIP, ROD, WIRE, AND LIKE MATERIAL Application flied June 4, 1929. Serial No. 368,419.

This invention relates to an improvement in mechanisms for feeding strip, rod, wire and like material through various types of machines for subjecting them to treatment, such as sand-scouring, etc.

One of the objects of my invention is to provide a reliable and effective feeding-mechanism which may be readily thrown into and out of action. 1

A further object of my invention is to provide a feed-mechanism of the type referred to in which means is provided for automatically locking the strip, etc., against movement when the grip of the feeding-mechanism upon the stock is released.

With the above and other objects in view, my invention consists in a feed-mechanism having certain details of construction and combinations of parts as will be hereinafter described and particularly recited in the claims.

In the accompanying drawings: Fig. 1 is a view in side elevation of my "improved feed-mechanism, showing the stock-pulling unit mounted at one end of a sand-scouring machine and the control-unit mounted at the opposite end;

Fig. 2 is a top or plan view thereof; Fig. 3 is a broken longitudinal sectional view through the control-unit takenon the line 33 of Fig. 2;

Fig. 3*- is a sectional View through one of the controlling-valve mechanisms showing the parts in the positions due them when the valve is moved into position to stop the feeding of the particular strip controlled by it;

Fig. 4 is a transverse sectional view taken on the line 4-4 of Fig. 1;

Fig. 5 is a longitudinal sectional view through the stock-pulling unit taken on the line 5-5 of Fig. 2;

. Fig. 6 is a transverse sectional view through the stock-pulling unit taken on the line 66 of Fig. 5; I

Fig. 7 is a detached perspective View of 011p1 of the guide-plates of the pulling-unit; an

Fig. 8 is a detached erspective view of one of the resser-roll slldes together .with its resser-roll.

pair of vertically-arranged In the embodiment of my invention herein chosen for illustration I employ a relatively-wide relatively-large-diameter pulling-roll 1O located between the upstandingarms 11 and 12 of'a frame 13 and mounted upon a transverse drive-shaft 14 rotatin in bearings 15 and 16 respectively locat at. the upper ends of the frame- arms 11 and 12 aforesaid.

Directly above the pulling-roll 10 I mount, with capacity for vertical movement, a plurality (eight being shown) of presser-roll slides generally designated by the numeral 17 and since they all correspond, a-description of one of them and its associated parts will serve for all.

Each presser-roll slide comprises a central spacing-plate 18 and having riveted to its respective opposite sides relatively-thin sheetmetal side- plates 19 and 20. The spacingplate 18 is cut away to form a pair of downwardly-opening notches 2l21 in each of which is positioned a presser-roll 22 mounted upon a short shouldered-shaft 23 hearing at its reduced ends in the side- plates 19 and 20 75 and mounting ball-bearing units 24 to permit the free rotation of the said Presser-rolls.

At their forward ends each of the corresponding Presser-roll slides 17 is entered into one of a series of vertical guide-slots 25 80 formed in a transverse front guide-plate 26 extending transversely thereacross between a skeletonized frame- extensions 28 and 29 upstanding respectively from the arms 11 and 12 of the 5 frame 13 proper. The rear end of each of the said slides is entered into one of a corresponding series of guide-slots 25 formed in a rear guide-plate 27 mounted atthe rear end of the frame and extends crosswise between the extensions 28 and'29 aforesaid.

For the purpose of pressing each of the presser-roll slides 17 downward so as to cause the two complementary Presser-rolls 22 thereof to engage the upper face of one of a series of strips 30 and press the same downward against the periphery of the pullingroll 10, I locate directly above each of the said slides 17 a pair of complementary verticallyarranged piston-rods 3131 respectively ex- 100 tending downward from pistons 32 and 32 reciprocating in cylinder- tubes 33 and 33 respectively. The said cylinder- tubes 33 and 33* are seated at theirv lower and upper ends respectively and extending vertically between a lower bridge-plate 34 and an upper bridge-plate 35 mounted at the upper ends of the frame- extensions 28 and 29 and held in spaced relationship by spacer-blocks 36.

The lower ends of the piston- rods 31 and 31 bear upon the upper edge of that particular presser-roll slide lying directly beneath them and are concurrently actuated to exert downward pressure by compressed air entering the upper end of their cylinder- tubes 33 and 33 through ports 37 which pass vertically through a horizontally-arranged cylinder head-plate 38 clamped upon the upper face of a gasket 39 positioned upon the upper face of the bridge-plate 35 before referred to.

The ports 37 just above referred to of each pair of cylinders have screwed into them pipes 40,.the upper ends of both of which are connected into a compressed-air pipe 41 leading rearwardly over a sand-scouring or other machine generally designated by the numeral 42 and forming in itself no part of my present invention and therefore requiring no detailed description herein.

For the purpose of raising each of the several Presser-roll slides 17 so as to free the strip of stock pinched bet-ween the rolls 22 and the upper surface of the pulling-roll 10, I extend the opposite ends of the side- plates 19 and 20 of each of the said slides outward beyond its spacing-plate 18 so as to form at each of the opposite ends of the said slide 'a pair of cars 43 and 43 respectively. Between the pairs of ears 43 and 43 thus provided, I respectively couple by means of transverse pins 44 vertical lifting- rods 45 and 45 extending upward through guide-passages 46 in a cross-head 47 extending between the frame- extensions 28 and 29. Each of the lifting- rods 45 and 45 is encircled by a helical spring 48 resting at its lower end upon the upper face of the cross-head 47 and at its upper end bearing against the underface of a spring-seat 49 held in place upon the said lifting-rods by pins 50.

From the foregoing it will be seen that I provide a plurality of presser-roll slides, each of which carries a pair of presser-rolls forced downward for pinching the strips 30 between the said rolls and the pulling-roll 10 by a pair of pistons 32 and 32" and is lifted upward to disengage the said rolls from the stock when the compressed air is turned off, as will hereinafter appear, by a pair of lifting- rods 45 and 45".

As shown in Figs. 1 and 2 and as previously pointed out, the stock-pulling unit is located at the exit-end of the machine 42, whatever the nature of the latter may be, so as to pull the stock therethrough. It is desirable,

however, to have the attendant stand at the left-hand or entry-end of the machine so as to observe the feeding-in of the strip-stock 30 and be able to control the stock-pulling unit from this point.

The compressed-air pipes 41, one of which is provided for feeding compressed air to the pair of pistons of each presser-roll slide, are extended over the machine, as indicated by broken lines in Fig. 1, and each is threaded into a cross-bar 51 extending crosswise between a pair of complementary bracket-arms 52-52 offsetting from the left-hand end of the scouring-machine 42.

In line with the open end of each of the pipes 41 the cross-bar 51 is formed with a vertical passage 53 intersecting a radial port 54 formed in the periphery of each of a series of horizontal valve-tubes 55 having its right hand end passing through the cross-bar 51 and its left-hand end supported in a second cross-bar 56 extending between the brackets 52-52 and formed with a longitudinal horizontally-arranged air-supply passage 57 havin g a plurality of vertical air-supply passages 58 leading downward from it and respectively intersecting an air-inlet port 59 formed in each of the valve-tubes 55 aforesaid.

Reciprocating within each of the valvetubes 55 above referred to is a slide-valve consisting of a rod 60 having its inner end 61 reduced in diameter (Fig. and mounting near each of its respective opposite ends a pair of cup-washers 62 spaced apart by a spacing-sleeve 63, which latter is of less diameter than the internaldiameter of the valvetube 55, so as to provide a longitudinal airpassage.

The outer end of each of the corresponding valve-rods 60 has pivoted to it a pair of links 64. the outer ends of which latter are pivotally connected to an oscillating controllever 65 constituting one of a corresponding series (one for each valve) and mounted for oscillation upon a transverse shaft 66 extending laterally between the brackets 52-52 near the outer ends thereof.

lVith the valves in the positions shown in Fig. 3, compressed air entering the air-supply passage 57 from a laterally-extending supply-pipe 67 will blow through the vertical passage 58 and port 59 of each valve-tube 55 and from left to right through the latter and outward through the port 54, vertical passage 53 and that particular pipe 41 which is controlled by the valve in question into the upper end of the pair of c vlind er- tubes 33 and 33*, so as to exert a downward pressure upon the pistons therein and force the presserrolls of the given presser-roll slide 17 into engagement with the strip-stock 30, so as to cause the pulling-roll 10 to pull the particular strip lengthwise through the scouring or other machine 42 for treatment thereby.

For the purpose of clamping any given one of the plurality of strips when its particular pair of resser-rolls 22 are thrown out of action so as to halt its movement, I form the lower en d of each of the levers 65 with an eccentrically-curved gripping-cam 68 which engages the upper face of that strip 30 lying beneath it, to crampit against an anvil-block 69 when the said lever 65 is moved into the position in which it is shown by broken lines in Fig. 3 to effect the shutting-off of the supply of compressed air to the particular pair of pistons 32 and 32 which control the pulling through of the strip.

The anvil-block 69 just referred to has ca pacity for vertical adjustment and extends transversely beneath the series of strips 30 and is guided in a guide-fixture 70 secured at its respective opposite ends to the inner faces of the brackets 52-52, and is formed with a longitudinal upwardly-opening guide-groove 71 into which the said anvil-block 69 is set. One or more vertically-arranged adjustmentscrews 72 threaded into the bottom-wall of the guide-fixture 70 and engaging the underface of the anvil-block 69 provided for the vertical adjustment of the latter to compensate for different thicknesses of stock 30 and for wear.

In the use of my improved feeding-mechanism. when the operator wishes to stop the feeding of any one of the plurality of strips 30, passing through the scouring machine 42. for any reason, such for instance as to attach another strip to the end thereof, he will swing the particular lever 65 above the strip in ques tion from the position shown by full lines in Fig. 3 into the position shown by broken lines in the same figure.

The described movement of the lever 65 will cause the cam 68 thereof to engage and pinch the strip against the end of the block 69 and simultaneously move the valve-rod connected to it from right to left into the position shown in Fig. 3, thereby preventing the further flow of compressed air upward through the pipe 41 and permitting the air already in it to exhaust outward through an exhaust-port 7 3 extending axially through a bushing 74 threaded into the inner end of each of the valve-tubes 55.

As soon as the air is allowed to escape from the pipe 41 outward through the port 73, the lifting-springs 48 of the presser-roll slide 17 located above the strip 30 in question, will be enabled to assert themselves and lift the presscr-rolls 22 out of engagement with the strip and thus relieve it of the draft of the continuously-rotating pulling-roll 10.

IVhcn it is desired to have the particular strip resume its passage through the scouringmachine 42, the lever before referred to is swung back into the position in which it is shown by full lines in Fig. 3. so that the grip of the cam 68 is released and compressed air again applied to the upper end of the pistons 32 and 32", so as to force the strip into en'- gagement with the pulling-roll 10 and .thus cause it to resume its movement.

I claim:

'1. In a mechanism of the class described, the combination with a pulling-roll; of one or more roll-carriers mounted adjacent the pulling-roll: one or more presser-rolls rotatably mounted in the said carrier and positioned to force material to be fed into engagement with the said pulling-roll; spring-means nor mally urging the said presser-roll away from the said pulling-roll; and fluid-pressure means including one or more cylinders and pistons constructed and arranged to overcome the said spring-means and move the said presser-roll toward the said pulling-roll to grip the said stock therebetween.

2. In a mechanism of the class described, the combination with a pulling-roll; of one or more roll-carriers mounted adjacent the pulling-roll: one or more presser-rolls rotatably mounted in the said carrier and positioned to force material to be fed into engagement with the said pulling-roll; springmeans normally urging the said presser-roll away from the said pulling-roll; fluid-pressure means including one or more cylinders and pistons constructed and arranged to overcome the said spring-means and move the said pressenroll toward the said pulling-roll to grip the said stock therebetween; and a valvemechanism connected to the said cylinder and constructed to admit fluid under pressure thereinto when in one position and when in another position to automatically shut off the supply of such fluid and permit the escape of fluid from the said cylinder.

3. In a mechanism of the class described, the combination with a pulling-roll; one or more reciprocating slides mounted adjacent the said pulling-roll; guides engaging the opposite edges of the said slides; one or more presser-rolls rotatably mounted in the said slide and positioned to force the material to be fed into engagement with the said pullingroll; spring-means normally urging the said slide away from the said pulling-roll; and fluid-pressure means including one or more cylinders and pistons acting through the said slide to overcome the said spring-means and move the said presser-roll toward the said pulling-roll to grip the stock therebetween.

4. In a mechanism of the class described, the combination with a pulling-roll; of one or more plate-like presser-roll slides formed with apair of roll-receiving recesses and providcd near each of its opposite ends with ears; guides for the said slides; a pair of Presser-rolls rotatably mounted in the rollreceiving recesses in the said slide and positioned to force the material to be fed into engagement with the said pullingroll; a pair of retracting-rods respectively connected to the ears of the said slide; spring-means acting through the said retracting-rods to move the said slide away from the said pulling-roll; and fluid-pressure means including one or more cylinders and pistons acting through the said slide to overcome the said springmeans and move the said presser-roll toward the said pulling-roll to grip the stock therebetween.

5. In a mechanism of the class described, the combination with a'pulling-roll; of one or more reciprocating slides mounted adjacent the said pulling-roll; a pair of presserrolls mounted in the said slide in position to force the material to be fed into engagement with the said pulling-roll; spring-means coupled to each of the opposite ends of the said slide and exerting an efiort to move the said slide away from the said pulling-roll; and fluid-pressure ineans including one or more cylinders and pistons acting through the said slide to overcome the said spring-means and move the said presser-roll toward the said pulling-roll to grip the stock therebetween.

6. In a mechanism of the class described, the combination with a pulling-roll; of one or more roll-carriers mounted adjacent the pulling-roll; one or more resser-rolls rotatably mounted in the said carrier and positioned to force the material to be fed into engagement with the said pulling-roll; fluid-pressure means including one or more cylinders and pistons constructed and arranged to move the said presser-roll toward the said pulling-roll to grip the stock therebetween; a controlvalve for the said fluid-pressure means; and means brought into play when the said fluidpressure means is rendered inactive by the said control-valve for retiring the said rollcarriers and Presser-rolls.

7. In a mechanism of the class described, the combination with a pulling-roll; of one or more roll-carriers mounted adjacent the pulling-roll; one or more presser-rolls rotatably mounted in said carrier and positioned to force material to be fed into engagement with the said pulling-roll; fluid-pressure means including one or more cylinders and pistons constructed and arranged to move the said presser-roll toward the said pulling-roll to grip the stock therebetween; and a control-valve for the said fluid-pressure means consisting of a housing formed with an inletport connected to a source of fluid-pressure, an outlet-port connected to the said fluidprcssure means. and an exhaust-port, and a movable member in said housing adapted to connect the said inletand outlet-ports when in one position and to connect the said outletand exhaust-ports when in another position.

8. In a mechanism of the class described, the combination with a pulling-roll; of a plurality of independeutly-movable roll-carriers mounted adjacent the said pulling-roll; a presser-roll rotatably mounted in each of the said carriers and positioned to force mate- CHARLES A. DREISBAOII.

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