US1470375A

US1470375A - Continuous-wire-drawing bench

Info

Publication number: US1470375A
Application number: US433283A
Authority: US
Inventors: Boley Ernst
Original assignee: American Steel and Wire Company of New Jersey
Current assignee: American Steel and Wire Company of New Jersey
Priority date: 1920-12-27
Filing date: 1920-12-27
Publication date: 1923-10-09
Anticipated expiration: 1940-10-09

Description

Oct. 9, 1923. 1,470,375,

' E. BOLEY CONTINUOUS WIRE DRAWING BENCH Filed Dec. 27, 1920 s Sheets-Sheet 1 h) v "3 W'inesses Inven for:

Oct. 9, 1923. 1,470,375

E. BOLEY CONTINUOUS WIRE DRAWING BENCH Filed Deg. 27. 1920 C5 Sheets-Sheet 2 [raven mness es:

E. BOLEY Oct. 9, 1923.

CONTINUOUS WIRE DRAWING BENCH Filed Dec. 27, 1920 3 Sheets-Sheet 5 Patented Oct. 9, 1923.

' UNIED STATES PATENT OFFICE.

. ERNST BOLEY, OF CLEVELAND, QHIO, ASSIGNOR TO THE AMERICAN STEEL AND WIRl COMPANY OF NEW JERSEY, A CORPORATION OF NEW JERSEY.

CONTINUOUS-WIRE-DRAWING BENCH.

To all whom it may concern:

Be it known that I, ERNST BOLEY, a citizen of the United States, and resident of Cleveland, in the 'county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Continuous- Wire-Drawing Benches, of which the following is a specification.

' This invention relates to wire drawing apparatus, and more particularly to continuous wire drawing, and has for its principal object the provision of a novel and improved form and arrangement of drawing blocks for such wire drawing benches.

Heretofore, it has been found impossible to "continuously draw wire commercially through several successive dies, failure being due to the irregular strains, developed in the drawing operations which cause the wire to feed through the dies at different speeds. For example, if the metal in the rod from which the wire is being drawn is of varying degrees of hardness, or is of slightly increased diameter at difi'erent points in its length, as is often the case, the strain is materially increased on the first die and, there fore, have a tendency to cut and enlarge the hole in this die. When this occurs the succeeding block will be drawing the wire through the next succeeding die at regular speed and consequently will be unable to take care of the increased amount of wire coming through the preceding die having the enlarged hole. any except the first die is enlarged by cutting thereof in the wire drawing operations, the wire will pass through such die at a greater I speed than it travels through the preceding one and such an excessive. strain is thereby put onthe wire as to cause frequent breakage of the wire and resulting delays in the wire drawing operation. Many suggestions have been made to eliminate the above evils, 'but none have proved entirely satisfactory. One object of the present invention is to provide a simple, durable and inexpensive mechanism that will entirely eliminate the above defects and make continuous wire drawing a practically and commercially successful operation without limitation as to the number of dies used.

Another object of the invention is the provision of a draw bench having the novel constructions, arrangement and combina- In addition when the hole in,

Application filed December27, 1920. Serial No. 433,283.

tion of parts, shown in the drawings and described hereinafter and specifically pointed out in the appended claims.

In the drawings, illustrating the invention, Figure 1 is a top plan view of a bench constructed in accordance with my inven- 6 tion.

Figure 2 is aside elevation thereof.

Figure 3 is an enlarged fragmentary top plan view of a portion of the bench showing one die box, drawing block, and accompany- 65 ing mechanism.

Figure 4 is a side elevation of the same.

Figure 5 is a detail plan of a portion of one of the drawing blocks showing a modification in the construction of the drawing blocks.

M Figure 6-is an enlar ed detail lan showing a portion of the raw benc with the 1 pressure roller located on the right hand or delivery side of the drawing blocks.

Figure 7 is a side elevation of the. apparatus of Figure 6.

Referring particularly to the drawmgs, the letter A designates the bench framework as a whole, which is of less width at its rear end than at its forward end, and is composed of longitudinal side members 2 and 3 which are connected by cross supports 4; mounted on bases 5. The side member 3 1s set at an outwardly and forwardly diverging angle with relation to the member 2 so as to support the successive dies and drawing 9 blocks in proper relation.

Die boxes 6 of ordinary design, three of which .are shown in the drawings, are p ivotally mounted on supports 7, each of whlch extend outwardly the same distance beyond the side member 3 of the frame, and are provided with supporting legs 7 at them outer ends.

Immediately forward of the two rearmost die boxes 6 are drawingblocks 8 and 8?, respectively, keyed on

shafts

9 and 9, ournaled in bearin s 10 in the members 2 and 3, and immediate y forward of the foremost lot die box is atake-up block 11 which is keyed to a shaft-12 journaled in bearings 13 1n the members? and 3. v

The shaft 9 is geared to a countershaft 14 by ears 14 to reduce its speed, and the 1 0! sha s 14, 9 and 12 are each provided with pulleys 15 which are adapted to be belted to suitable prime mover,-.in any approved man wardly flaring annular rim or flange poropposite side of a plane through the verticat axis of the

shafts

9 and 9 as shown in Figures 6 and7. It also will be obvious that tion 16 .at their inner end, a circular body portion 17, and a reduced spindle portion 18.

The body portion 17 has a one degree taper away from the flange 16 toward the spindle portion 18, this spindle portion being of skeleton construction and ofmaterially less diameter than the body portion 17.

In somecases the .roller 24, arms 22v and 22, pivot shaft 23 and counterweight 25, comprising the tension device of. my im proved apparatus, will be positioned on the when desired to more firmly hold the. wire on the ,body portion 17 of the draw blocks 8 and 8 a tension device may be used on each side of the drawing blocks, preferably at substantially diametrically opposite points. I I

The take-up block 11 which is of ordinary and approved design has a smooth surfaced circular body portion 20, which tapers slightly toward its outer edge and which has an annular rim or flange 21 at its inner edge.

The drawing blocks 8, 8 and 11 each have retaining lugs 19 pivotally mounted on their outer ends which. are adapted to move into an outwardly extended position to prevent the wire falling from the blocks, and. to move out of such position when it is desired to facilitate manipulation of the wire on the blocks.

Levers

22 and 22 fastened on rocking stub shafts 23, are secured on the frame member 3 forward of each of the blocks 8 and 8, the

vertical levers 22 having a pressure roller 24 on the upper ends thereof and the horizontal levers 22 having a counterweight 25 thereon, adapted to yieldingly hold the roller 24 against the body portion 17 of the blocks 8, and 8 or wire coiled on the portion 17 with considerable pressure.

The rollers 24 are set at an angle to the transverse axis of the levers 22, and the axis of the blocks 8 and 8, so that only their outer edge engages the body 17 of the blocks. The pressure rollers 24 are adapted to engage .the wire wrapped on the blocks so as to hold it taut,and it is only necessary for one or two of the outermost coils of wire to be engaged by the roller 24 to hold the coiled wire, in frictional engagement with the blocks18and 8 and the angle of the roller is 22, pivot shaft 23 and counterweight 25 may be positioned on the opposite side of a plane through the vertical axis of the shafts 9 and V 9*. It may be desirable or necessary to more firmly hold the wire on the body portion 17 of the draw blocks 8 and 8 in some operations, and in such case two rollers 24'may be used, one on'each side of the block at substantially diametrically opposite points.

The operation of my improved apparatus is as. follows The wire to be drawn and which has been previously cleanedpis placedon areelv B, to

the rear of the drawingbendrand is drawn through a die in the'ifirst or rearmost die block 6 which reduces. its diameter. ,The 7 wire emergingfromthis dieis wrapped on. .the body. 17 ofthe block 8. and'held taut by} the pressurewroller 24, Q eachr additionalnwra p; or coil falling-behind the; reviously formed. coil and pushingit forward and along the? .tapered body, until said body is completely filled or ,covered, when each additional wrap.

or coil willpush one of the previously taut. wraps or coils ofi'onto the spindle portion 7 18, where. it will spring, forming a loose.

wrap or coil. After a plurality of loose wraps or coils are formed on the spindle portion 18, the wire is fed from the loose coils through the die in the next succeeding die block 6 and is again drawn to reduce its diameter, while the remainder of the wire is simultaneously drawn through the first die.

The wire as it emerges from the second die is wrapped on'the intermediate block 8 in the same manner as it is wrapped on the block 8 after passing through the first die.

The wire is fed from the block 8 to a die in the third die block 6 and as it emerges from the die it is secured to and coiled on the take up block 11 into a bundle.

It will be readily apparent that the above apparatus provides a continuous wire drawing mechanism that is simple, and durable, and one that will continuously draw wire through several. dies without liability of breaking the wireby undue tension strains on the wire in the drawing operations, since the loose coils will provide suflicient slack to compensate for any temporary variations in the speed of drawing the wire through the ing drawings, it will be understood that such construction is only illustrative of my invention, and that various modifications in the construction and arrangement of the parts may be made without departing from the spirit and scope of my invention as defined in the appended claims.

. die blocks, a plurality of wire drawing blocks on said bench,- said die blocks and drawingblocks being arranged for successively drawing the wire through said plurality of dies, and means for holding a portion of the wire taut while allowing other portions to form loose coils on said wire drawing blocks.

2. In a continuous wire drawing bench having a plurality of dies and a plurality of wire drawing blocks thereon in combinatior. with at least one of said blocks, of a ressure roller adapted to engage and hol the drawn wire tautly on said,wire drawing block.

3. A continuous wire drawing bench having a plurality of dies and a plurality of wiredrawing blocks, at least part of said blocks comprising body and spindle portions, said spindle portions being of less diameter than said body portions, and pres: sure rollers adapted to bear against said body portions to hold the wire tautly thereon while permitting other portions of the wire to hang in loose coils on the spindle portions.

4. A continuous wire drawing bench having a plurality of dies and a plurality of wire drawing blocks, at least part of said blocks comprising a body portion and a spindle portion of less diameter than said body portion, said body portion tapering toward said spindle portion, and a pressure roller adapted to bear against said body portion to hold the wire taut as it is wrapped thereon, while the wire on the spindle portion hangs in loose coils.

5. The combination with a wire drawing die and a wire drawing block on which the wire is coiled and uncoiled in drawing wire through said die, of a pressure roller adapted to bear against a portion only of the coils of wire wrapped on the drawing block during the wire drawing operations.

6. The combination with a wire drawing die and a wire drawing block on which the wire is coiled and uncoiled in drawing wire through said die, of a pressure roller arranged at an angle to the axis of said draw-- ing'block and against a portion only of the coils-of wire wrapped on the drawing block during the wire drawing operations.

7. The combination wlth a drawing block, of a lever arm mounted for pivotal movement, a pressure roller mounted on the up-' per end of said arm, a second lever arm, and a counterweight inounted on the. other end thereof, said roller being adapted'to bear against a portion of the coils 'of'wire,

wrapped on said block in drawing the wire and holding the wire taut while the remain- V der hangs loosely thereon.

8. The combination with a drawing block, of a lever arm mounted-for pivotal movement, a pressure rollerv mounted on the up per end of said arm, a second lever arm, 4

and a counterweight mounted on the outer end thereof, said roller being arranged at an angle to the axis of said block, and being adapted to bear against a portion of the wire Wrapped on said block to hold it taut while the remainder hangs loosely thereon.

9. A continuous wire drawing bench comprising a plurality of wire drawing dies,

wire drawing blocks located adjacent the exit side of each of said dies and adapted to draw wire through the dies and means on at least one of said drawing blocks for engaging the wire coiled thereon in forming a series of taut and loose coils on said drawing block in the wire drawing operations.

10. A continuous wire drawing bench comprising a plurality of wire drawing dies, wire drawing blocks located adjacent the exit side of each of said dies and adapted to draw wire through the dies and means on a plurality of said drawing blocks for engaging the wire coiled thereon in forming a series of taut and loose coils on said drawing blocks in the wire drawing operations.

11. A continuous wire drawing bench comprising a plurality of wire drawing dies,

on a plurality of said drawing blocks for engaging the wire coiled thereon intermediate the ends of the coiled wire in forming a series of taut and loose coils on said drawing blocks in the drawing, operations.

13. A continuous wire drawing bench comprising-a plurality of wire drawing dies,

wire drawing blocks located adjacent the exit side of each of said dies and adapted to draw wire through the dies and means on at least one of said drawing blocks for engaging the wire coiled thereon in forming a series of taut and loose coils on said drawing'block and to enable the loose coils tomove axially on the drawing block while 4 tangentially uncoiling the loose coils from the drawing block.

14. A continuous wire drawing bench comprising a plurality of wire drawing dies,

' gaging the .wire coiled thereon in forming &

wire drawing blocks located adjacent the exit side of each of said dies and adapted to draw wire through the dies and means on a plurality of said drawing blocks for engaging the wire coiled thereon in forming a series of taut and loose coils on said drawing blocks and to enable the loose coils to move axially on the drawing blocks while tangentially uncoiling the loose coils from the drawing block.

15. A continuous wire drawing bench comprising a plurality of wire drawing dies, wire drawing blocks; located on the exit side of each of said dies and adapted to draw wire through the dies and means on at least one of said drawing blocks for ena series of taut. and loose coils to be coiled Sand uncoiled tangentially thereon.

.16. A continuous wire drawing bench comprising a plurality of wire drawing dies, wire drawing blocks located adjacent the exit side of each of said dies and adapted to draw wire through the dies and means on said plurality of said drawing blocks for engaging the wire coiled thereon in forming a series of taut and loose coils on said coils to be, coiled and uncoiled tangentially thereon. a

17. A continuous wire drawing bench comprising a plurality of wire drawing dies, wire drawing blocks located adjacent the exit side of each of said dies and adapted to draw wire through the dies and means on at least one of said drawing blocks for engaging-the wiremoiled thereon in forming a series of taut and loose coils on said drawing block and thereby enable the loose coils to be coiled and uncoiled thereon.

18. A continuous wire drawing bench draw block and thereby enable the loose comprising a plurality of wire drawing dies,

wire drawing blocks located adjacent the exit side of said dies and adapted to draw wire .through the dies and means on a plurality of said die blocks for engaging the wire coiled thereon in forming a series of taut and loose coils. on said drawing blocks and thereby enable the loose coils to be coiled and uncoiled thereon.

In testimony whereof, I have hereunto signed my name.

ERNST BoLEY.