US1258738A

US1258738A - Extruding-machine.

Info

Publication number: US1258738A
Application number: US14777917A
Authority: US
Inventors: George Hillard Benjamin
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-02-10
Filing date: 1917-02-10
Publication date: 1918-03-12
Anticipated expiration: 1935-03-12

Description

70 Z 'IGQL.

G. H. BENJAMIN.

EXTRUDING MACHiNL APPLICATION FILED FEB. 10. m1.

1,258,738; v Patehted Mar.12,1918.

5 SHEETS-SHEET I,

G. H. BENJAMIN.

EXTRUDING MACHINE.

APPLICATION man FEB. 10. 1911-.

Patentea-Mar. 12, 1918 5 SHEETS-SHEET 2.

' G. H. BENJAMIN.

EXIRL'DING MACHINE.

APPLICATION man FEB. 10. I911 1,258,738. Patented Mar. 12, 1918.

5 SHEETS-SHEET 3.

Fl cm. 2 {O 532:

G. H. BENJAMIN.

Exmuome MACHINE. APPLICATION FILED FEB. 10. I917.

Patented Mar.12,.1-918.

5 SHEETS-SHEET 4-.

.l l 6'5 a 1/0 ami-t m1 me A 12 /2 5] nvevttoz 120 M G. H. BENJAMIN.

EXTRUDING MACHINE. APPLICATION FILED FEB. 10. 1911.

1,258,738. Patented Mar. 12, 1918.

5 $HEETS-SHEET 5.

3 nvewto'c GEORGE HILLARD BENJAMIN, OF NEW YORK, N. Y.

ExTRUDING-MACHINE.

Specification of Letters Patent. Patented Mar, 12, 1918,

. Application filed February 10, 1917. Serial No. 147,779.

To all whom it may concern. Be it known that I, GEORGE HILLARD BEN- JAMIN, a citizen of the United States, re-

siding at New York, in the county and State of New York, have invented certain new and useful Improvements in Extruding-Machines, of which the following is a specification.

My invention relates to extruding machines of the type used for extruding solid or hollow wire rods, shaped bars, and the like.

Extruding machines as heretofore emp1oyed, have embodied in their construction, a hollow container adapted to receive a highly heated metal billet which is to be extruded therefrom in the form of a rod or other shape. Owing'to the fact that such containers rapidly absorb heat from the heated billet, it has been found necessary to give them special construction, as otherwise the container is unable to stand the bursting pressure exerted when the billet in the container is subjected to the pressure of the extruding ram. Practice has demonstrated that even with the best construction, the rapidity of action of the extruding machine is very limited, as the container must be given time to cool, between the introduction of each billet.

My invention has for Lt. purpose to overcome the above stated objection, and this is accomplished by providing a plurality of containers and mounting them in such man ner, that they may be successively rotated into relation with the extruding ram and die. In my improved construction, the cost of the containers is materially decreased and the rapidity of action increased.

The accompanying drawings will serve to illustrate my invention, in which Figure 1 is a sectional plan view of the machine. Fig. 2 is a side elevation partly in section. Fig. 3 is a transverse section on the line IIIIII of Fig. 2. Fig. 4 is a transverse section on the llne IVIV of- Fig. 2. Fig. 5 is a detail view, showing a valve for controlling the water supply to a hydraulic cylinder having a piston and an attached plunger, which is adapted to force hot metal from a container through the die. Fig. 6 is a detail view showing a valve forcontrolling the water outlet from the hydraulic cylinder. Fig. 7 is a longitudinal section,

showing the carriage carrying the containers toward the rear of the machine, and showing the operation of cutting an unextruded por-.

tion from the extruded portion of a hot billet of metal. Fig. 8 is a longitudinal section, showing the two parts of the die when moved into cooperative relation, and showing a container and a hot billet of metal when moved forwardtoward the die. Fig. 9 is a perspective View of one part of the die and a holder therefor. Fig. 10 is a sectional plan view, showing a portion of the hot billet of metal extruded through the die. Fig. 11 is a longitudinal section showing the die moved forward clear of the container and also showing theunextruded portion of the hot billet moved forward out of the container. Fig. 12 is a sectional plan view of a slide which causes forward and backward movement of the die holder. Fig. 13 is a sectional plan view showing parts in the position they occupy previous to movement to the position shown in Fig. 7. Fig. 14 is ,a perspective view of the die and holder and the slide for causing forward and backward movement thereof, and also showing the unextruded part of the billet moved back and away-from the die. Fig. 15 is a perspective View of a portion of the frame in which the slide for operating the die holder is mounted. Fig. 16 is a perspective view of said slide.

' Referring to the drawings. Mounted on a suitable base 1, are end frames 2 and 3 which -are connected by

tie rods

4, 5 and 6. Located in the forward end frame 2. is a tubular die holder 7 (see Figs. 7 to 1.1) having longitudinal reciprocating movements parallel to the longitudinal axes of said tie rods. One end of the die holder is provided with a socket 8, having an upwardly inclined opening9 (Fig. 9) on one side, for the purpose of inserting or removing the die 10, The die 1.0 is provided with a flange 11 which fits a groove 12 formed between the socket 8 and the end of the tubular portion of the die holder, so that the die will be held in said socket and against the end of the tube. The tube 7 is provided with two lateral flanges 13 and two lateral shoulders 14, between which two vertically reciprocating slides 15 have movement. Slides 15 move in guides -16 and 17 forming part of the end frame 2, and are provided with inclined surfaces 18, which. during downward movement. take against the lateral flanges 13 and thereby move the die holder from the tion shown in Figs. 8 and .0 to the position 7 shown in Fig. 7. At theend of downward against the lateral shoulders a vertical face 21 on each slide bears against a corresponding face formed on each shoulder 14. The lower ends of the slides 15 are secured to a cross-bar 22, and upward extensions 23 are secured to acrossbar 24. Cross-bar 24 is connected by links- 25 to the free end of a lever 26, which is pivoted at 27 .to the end frame 2. v

Journaled on lever 26 is a roller 28 which engages a cam 29, loosely mounted on a revolving shaft 30. Cam 29 is provided with teeth 31 which are adapted for engagement with teeth 32 formed on a sliding collar Collar 33 is provided with a key engaging a slot 34 formed on the shaft so that the cam 29 will be rotated, when by means of the manually operative lever 35, the collar is moved into engagement with the cam. T e

the end of messes sages adapted to admit the water from a supply pipe 61 to each side of the piston or to permit its escape through an exhaust 62.

Secured to the forward end of piston 43 is a plunger 63 which moves through openings from the cylinder 57 64 formed at the lower end of an inclined dizing gas can be admitted to the chute by means of the pipe 69 controlled by the valve 7 O. i I

Mounted on the tie rod 6, is a longitudinally reciprocating carriage 71, which is connected by'a link 7 2 to an arm 7 3, secured to a vertical shaft 74. To vertical shaft 74 is secured an arm 75, provided with a roller 76 which engages a cam 77, loosely mounted on shaft 30. Cam 77 is provided with teeth 78 which are adapted for engagement with cam 29 is so shaped that one half revol tion will actuate the lever 26 and thereby teeth 79 formed on a sliding collar 80. Col cause downward movement of the slides 15 lar 80 is provided with a key engaging the while the other half revolution causes the slot 34, formed on shaft 30, so that the cam lever to'move the slides upward. Shaft 30 77' Will be rotated, when, by means of the rotates in bearings 36 and is provided with manually operative lever 81, the collar 80 is a gear wheel. 37 which is in mesh with a moved into engagement with the cam. The smaller. gear wheel 38 secured to a shaft 39. cam 77 is so shaped that one half revolution Shaft 39 rotates in bearings 40 (see Figs. 1, will actuate the levers 75, 73, and thereby 2, 10 and 13) and is provided with a driving pulley 41, by which motion is imparted direction; while the other half revolution to shaft 39, gears 38 and 37 and shaft 30. causes the levers to move thecarriage 111 the Forming part of the rear end frame 3 is a opposite direction. 7 hydraulic cylinder 42 in which is located a Mounted on the forward end of carriage piston 43.' The forward end of the piston 71 is a slide 82 which extends downward-and 43 is supported by a carriage 44 adapted to is provided at its lower end with rods 83 slide horizontally on the

tie rods

4, 5 and 6. which extend forward through guides 84 Connected to the carriage 44 are chains formed in the end frame 2 (see Figs. 10, 13,

cause movement of the carriage 71, in one .45 carrying counterweights 46, which nor- 14 and 15). Mounted in an annular groove the piston43 into the 85 formed on the exterior of carriage 71, is cylinder 42. Forward movement of the pisa cylinder 86 provided with radial extenton 43 is caused by water under pressure sions 87 in which are mounted four cylindri: admitted through pipe 47, controlled by a .cal containers 88. The rear end of cylinder rnally serve to retract valve 48, which also controls a by-passout- 86 is provided with a gear wheel 89, which let 49, as shown in Fig. 5. The stem 50 of is in mesh with a gear wheel 90, secured to a valve 48 is provided with a screw 51 carried shaft 91. 111 a thread 52 attached to the end frame 2. Shaft 91 is journaled in a frame 92 form- Un the upper end of the valve stem 50 is a ing part 'of carriage 71, said frame being ar-.

hand wheel 53 for controlling the valve 48. ranged to slide on the tie rod 4. Shaft 91 Return movement of the piston 43 is permitextends through a. sleeve 93, and is provided ted by escape of water from the cylinder"42 with a slot 94 in which is fitted a" key .95 through pipe 54, controlled by a valve '55 ac-- formed on the inner side of the sleeve. Sleeve tuated by a piston 56 in a cylinder 57, as 93 is'journaled in a frame 96, Which-is fixed shown in Fig.2. The piston 56 is controlled to

the'tie rods

4 and 6. Longitudinal move by water under pressure admitted through .ment of sleeve 93 on frame 96 is prevented pipes 58,*by means of aman'ually' operated by means of shoulders 97 formed on the auxiliary valve 59, (Fig. 6)"having two passleeve. Forming part of sleeve 93 is the slotted wheel 98 of the Geneva movement shown.

Loosely mounted on the shaft 39 is a wheel 99 provided with a convex surface 100 fitting one of the concave surfaces 101 of the slotted wheel 98, whereby wheel 98, sleeve 93, shaft 91, gear wheels 90 and 89 and the cylinder 86 carrying the containers 88 are prevented from rotating. The parts just enumerated, are so arranged that the center of the bore 102 of one of the containers 88 is in line with the longitudinal axis of the die 10 and of the plunger 63. Fitting over the forward end of plunger 63 is a removable cap 103, having a diameter equal to that of the bore 102 of the containers. The die 10 is provided with a cylindrical extension 104 having less' diameter than the bore 102 of the container. The lower end of the slide 82 is bored out at 105 to fit the cylindrical eX- tension 104 of the die, consequently the bore 105 of said slide is of less diameter than the bore 102 of the container 88. The side of the slide 82 facing toward the container is provided with a flange 106 concentric with the bore 105, which flange is adapted to fit a recess 107 formed in the container.

Referring now to Figs. 1, 2 and 7, the car.- riage 71 has been moved toward the rear of the machine carrying with it the series of containers 88, the shaft 91 sliding in the sleeve 93, and by means of a flange 108 forming part of the carriage the slide 82 has been moved from the position shown in Fig. 11 to the'position shown in Fig. 7.

F orward movement of the plunger 63 will force the hot billet 66 shown in Fig. 7,

to the position shown by dotted lines in the container 88.

By means of lever 81, the operator will then cause cam 77 to be clutched to shaft 30, and thereby cause movement of the carriage 71 and the containers 88, along with the plunger, to the position shown in Fig. 8, at which time the flange 106 of slide 82 will be seated in the recess 107 formed in the container and the container will be bear' ing against astop 109 forming part of the end frame 2, which stop prevents further longitudinal movement of the container; the operator. will then move lever 81 to cause cam 77 to be released from the shaft 30 and the containers will remain stationary. Then or during said movement of the containers 88 and the plunger 63, the operator, by means of lever 35 will cause the cam 26 to be clutched to shaft 30, and. thereby cause the lever 26 to be actuated, causing upward movement of the slides 15, and consequent movement of the die holder from the position shown in Fig. 7 to the position shown.

in Fig. 8.

Forming part of each one of the containers 88 is a projection 110 having inclined faces 111 at its forward end, so that as the ,on said projection 110, by taking container in range with the plunger 63 is -moved from the position shown in Fig. 7, to

to the position shown .in Fig. 11,. and by means of lever 81 will cause longitudinal movement of the carriage 71, also to the position shown in Fig. 11. Further longitudinal movement of the carriage and the containers will be prevented, by means of the stop 109. The operator will then move the levers 35 and 81 in the directions to cause the

cams

29 and 77 to be released from the shaft 30, thereby causing the die holder 11 and the carriage 71 to remain stationary.

Then the operator by means of valve 59 causes closure of valve 55 and by means of hand wheel 53 controlling the valve 48 causes the plunger 63 to be moved downward from the position shown in Fig. 10 to the position shown in Fig. 11, thereby causing the unextruded portion 113 of the billet to be forced out of the container. As shown in Fig. 11 the flange 108 of the cylinder 71 is hearing against the slide 82, so that as the carriage 71 and the plunger 63 are moved to the position shown in Fig. 7, the flange 106 of the slide 82 by taking against the unextruded portion 113 of the billet moves the billet and the extruded portion 114 there of back from the die 10. It will be seen that movement of the die and holder is prevented by means of slides 15. Riding over a pulley 115 secured to shaft 39 is a belt 116 which rides over a pulley117 journaled on the tie rod 4. A belt 118- riding over pulley 117 rides over a pulley 119 which is journaled in an arm 120 pivotally mounted on the tie rod 4. Pulley 119 is secured to a shaft 121 to of the saw 122. Arm 120 is provided with a hand lever 123 whereby the operator can move the saw up from the position shown in Fig. 3, .to the position shown in Figs. 4 and 7 which will cause the unextruded part 113 and a portion of the extruded rod 114 to be cut off and-fall to the base 1. 'The extruded rod 114 can then be manually moved forward throughthe die 10.

As repeated operations. of extruding hot .metal froma container 88, causes'the container to be very much. heated, provision is made for moving a cooler containerinto range with the plunger 63 in place of the hot and 2, or automaticallyas shown in Fig. 10.

Referring to. Figs. 1 and 2, the hub of wheel 99 is provided with clutch teeth 124 which are engaged by corresponding teeth 125, formed on a sliding collar 126. Collar 126 is provided with a ey adapted for engagement with a slot 127 formed in shaft 39,

, whereby rotation of the shaft causes rotation of the collar. Collar 126 is'provided with an annular groove 128 which is engaged by a fork 129 attached to a sliding rod 130. Rod 130 is provided with a handle 131 whereby the operator can move the collar 126 longitudinally on the shaft 39 and cause the teeth 125, on said collar to be thrown into or out of engagement with the teeth 124 formed on the hub of wheel 99. lit will be evident that when shaft 39 is thus thrown into clutch engagement with wheel 99 said wheel will be rotated causing the pin 132 thereon to engage one of the slots 133 of wheel 98, thereby causing wheel 98, shaft 91,

gear wheels 90, 89 and cylinder 86 carrying the container 88, to be moved a quarter revolution whereby the heated container 88 in range with the plunger 63, is replaced by a cooler containerlBy reference to'Fig. 7, it will be seen that the cylinder 86 carrying the container 88 has been moved toward the rear of the machine suificient to cause the projecv tion 110 on a container 88'to be moved out of range with the fixed guides 112, and that the time the operator should cause rotation of cylinder 86 is when it occupies the position shown in Fig. 7, and previous to the time he causes forward movement of plunger 63.

Referring to Fig. 10, loosely mounted on shaft 39 is a sleeve 134 in which the shaft 39 is free to rotate. One end of sleeve 134 is provided with clutch teeth 135 which are engaged by corresponding teeth 136 formed on a sliding collar 137. Collar 137' is provided with a key adapted for enga ement with a slot 138 formed in shaft 39, w ereby rotation of the shaft causes rotation of the collar. Collar 137 is provided with an annular groove 139 whlch is engaged by a fork 140 attached to a sliding rod 141; Rod 141 is provided with a andle 142 whereby the operator can move collar 137 longitudinally on the shaft 39 and cause the teeth 136 on said collar to be thrown into or.

out of engagement; with the teeth 135,

formed on the end of sleeve 134. Ordina-' rily, the collar 137 is kept in clutch engagement with sleeve 134 so that the sleeve will be constantly rotated by means of the shaft 39. The hub of wheel 99 is provided with ratchet teeth 143 which are engagedby correspondingteeth 144 formed on collar'145, which .collar is free to slide on the exterior of sleeve 134. Collar 145 is provided with a key adapted for engagement with a slot 146 formed in sleeve 134, whereby rotation of the sleeve causes rotation of the collar. Collar 145 is provided with an annular groove 147 which is engaged by a fork 148 attached to the frame 92. During longitudinal movement of the carriage 71 and frame 92, the collar 145 is correspondingly moved on sleeve 134, and when the h carriage 71 is moved to the position shown in Fig. 7, the teeth 144 on collar 145 will be in engagement with the teeth 143 formed on the hub of wheel 99. After the consequent rotary movement of wheel 99 has caused a quarter revolution of cylinder 86 carrying the containers 88 and before the remaining three quarters of a revolution of wheel 99 can be finished the plunger 63 must move the hot billet of metal 66 into the changed container 988 and the carriage 71 and frame 92 must move the collar 145 out of clutchengagement with the hub of wheel 99, in order that further rotation of wheel 99 will be prevented. lfthe hot billet of metal is not ready to be placed in range with plunger 63, and more time is needed in which to move the plunger 63 than is afiorded during said three quarters of a revolution of wheel 99 before another quarter revolution of the slotted wheel 98 occurs; then the operator can b means of the handle 142 move the collar 13 out of clutch engagement with the ,sleeve 134, thus avoiding rotation of wheel 86 carryin the container 88 untilit becomes desirab e to rotate it.

Having described my invention, what I claim is:' 1. An extrusion machine comprising a die, a series of containers adapted to re eive highly heated billets which are to extruded therefrom, one of said containers having the longitudinal axis thereof in line with the center of said die; a longitudinally reciprocating I plunger adapted during its forward movement to force hot metal from said container through said die; means whereby said die can be moved forward clear of said container; means whereby further forward movement can be imparted to said movement of saidv plunger clear of the container; and means whereby another container of said series can be moved intoaline ment with the center of said die. 2.' An extrusion machine comprising a die, a series of containers adapted to receive highly heated billets which are to be, ex:- truded therefrom; one of said containers having the longitudinal axis thereof inlinewith the center of said die;-a longitudinally reciprocating plunger adapted duringitsforward movement to force hot metal from said container through said die; means whereby said die can be moved forward clear of said container; means whereby further forward movement can be imparted to said plunger whereby an unextruded portion of said hot metal will be forced out of said container; means for causing backward movement of said plunger clear of the container; automatic means causing another one of said containers to be moved into alinement with said die.

3. An extrusion machine comprising a die, a series of containers, one of said containers having the longitudinal axis thereof in line with the center of said die; a longitudinally reciprocating plunger adapted during its forward movement to force hot metal from said container through said die; means whereby said die can be moved clear of said container; means whereby further forward movement can be imparted to said plungerwhereby an unextrudedportion of said hot metal will be forced out of said container;

means for causing backward movement of said plunger clear of the container; automatic means causing another one of said containers to be moved into alinement with said die, and means whereby said automatic means can be thrown out of action, and manually operative means for causing another container of said series to be moved intoalinement with said die.

4. An extrusion machine comprising a die, a series of containers, one of said containers having the longitudinal axis thereof in line with the center of said die, a plunger having reciprocating movement in line with the longitudinal axis of said container and a support for a billet of hot metal said plunger and said container; means whereby forwardmovement of said plunger forces said hot metalv into said container; means whereby said container can be moved forward to rest against said die; means whereby further forward movement of said plunger forces' part of said hot metal through said die;

' means whereby said die can be moved forward clear of said container; means whereby further forward movement can be imparted to said plunger whereby an unextruded portion of saidhot metal will be forced out of said container, means for causing backward movement of said plunger clear of the container; and means whereby another container of said series can be moved into alinement with the center of said die.

5. An extrusion machine comprising a die, a container, having the longitudinal axis thereof in line with the center of said die, a plunger having reciprocatingmovement in line with the longitudinal axis of said container, and a support for a billet of hot metal between said plunger and said container; means whereby forward movement of said plunger forces said hot metal intosaid container; means whereby said condie; means whereby further forward movement of said plunger forces part of said hot metal through said die, means whereby said die can be moved forward clear of said container; and means whereby further forward movement can be imparted to said plunger whereby an unextruded portion of said hot metal will be forced outof said container.

6. An extrusion machine comprising a two part die a reciprocating die holder supporting one part of said die; a container having the longitudinal axis thereof in line with the center of said die, said container being mounted in. a longitudinally reciprocating carriage; the other part of said die arranged to slide on said. carriage; a plunger having reciprocating movement in line with the longitudinal axis of said container and a support for a billet of hot metal between said plunger andsaid container; means whereby forward. movement of said plunger forces said hot metal into said container; means whereby said carriage can be moved forward thereby causing said container to be moved forward to rest against said die; means whereby further forward movement of said plunger forces part of said hot metal through said die; means whereby said die holder can be moved forward clear of said container; means whereby further forward movement can be imparted to said plunger whereby an unextruded portion of said hot metal will be forced out of said container; means'whereby said plunger and said carriagecan be moved mg one part of said die; a container having the longitudinal axis thereof in line with the center of said die, said container being mounted in a longitudinally reciprocating carriage; the other part of said die arranged to slide on said carriage a longitiudinally' reciprocating plunger adapted during its forward movement to force hot metal from said container through said die, means whereby said die holder can be moved for-' ward clear of said container, means whereby further forward movement can be imparted to said plunger whereby an unextruded portion of said h'ot metal will be forced out-of said container; means whereby movement of said carriage causes the part.

' the longitudinal axis thereof in line wt said plunger and said carriage can be moved backward; means whereby said backward of'said die thereon to move said unextruded portion of said hot metal backward, thereby causing an extruded portion, of said hot metal to be drawn back through the part of said die on said die holder; and means whereby said unextruded part can be cut off from the extruded part, substantially as described.

8. An extrusion machine comprising a two part die; a reciprocating die holder supporting one part of said die; a container having the longitudinal axis thereof in line with the center of said die, said containerbeing mounted on a longitudinally reciprocating carriage; the other part of said die arranged to slide on said carriage a plunger having reciprocating. movement in line with the longitudinal axis of said container; means whereby forward movement of said plunger canforce a hot billet of metal into said container and whereby further forward movement of said plunger forces part of said hot metal through said die; means whereby said die holder can be moved forward clear of said container; means whereby further forward movement can be imparted to said plunger whereby an unextruded portion of said, hot metal will be forced out of said container; means'for causing backward movement of sald plunger and said carriage; means whereby said backward movement of said carriage causes the part of said die thereon to move said unextruded portion of said hot metal backward thereby causing an extruded portion of said hot metal to be drawn back through the part" of said die on said holder .and means whereby said unextruded part can be cut ofi from the extruded part," substantially as described.

9. An extrusion machine comprising a two part die, a reciprocating die holder support ing one part of said die; a container .havin tn the center of said die, said container being mounted in a longitudinally 'recipr 'ating ged carriage; the other part of said die a I to slide on said carriage, a plunger having reciprocating movement in line with the longitudinal axis of said container, and a support for a billet of hot metal between said plunger and said container, means whereby forward movement ofsaid plunger forces said hot metal into said container,

means whereby said die holder can move the part of said die thereon into cooperative relation with thefpart of said die on said carriage;'means whereby said carriage can be moved forward thereby causing said container to be moved forward to rest against said die; means whereby further forward 7 movement of said plunger forces part of said hot metal through said die, means whereby said die holder canbe moved forward clear of said container; means whereby. further forward movement can be imparted to said plunger, whereby an unextruded portion of said hot metalwill be forced out of said container; means whereby said plunger and said v carriage can be moved backward; means whereby said backward movement of said- 10. In an extruslon machine and in combination witha die and a plunger, a revoluble multiple. container adapted to "receive highly heated billets which ax to be extruded therefrom.

11. In an extrusion machine, a die, a memher having formed therein a multiplicity of containers adapted to receive highly heated billet -which areto be extruded-thirefrom, and af jplunger adapted to cooperate with any one ofi-said containers and die.

testimony whereof, I aifix my signay resence of two witnesses.

' *GEORE HILLARD; BENJAMIN Witnesses: v v HEmNE. KonLson, LESLIE BEARDSLEY.