US1619971A - Feeding mechanism for swaging machines - Google Patents

Description

March 8, 927 n 1,61 9,971

\ I: A. DEAN FEEDING MECHANISM FOR SWAGING MACHINES Filed Feb, 9, 1923 2 Sheets-Sheet 1 w Malh 89 E. A. DEAN n FEEDING MECHANISM FOR SWAGING MACHINES Filed Feb. 9, 1923 2 Sheets-Sheet? gwuwnffoz Patented Mar. 8, 1927.

UNITED STATES EDSON A. DEAN, 0F EDGEWOOD', RHODE ISLAND.

FEEDING MECHANISM FOR SWAGING MACHINES.

Application filed February 9, 1923.

rI'his invention relates to machines for Serial No. 618,144.

cooperating `inclined member for opening feeding tubular blanks to a swaging mathe jaws to release the finished tube Aand re chine or other device to be operated upon, and the invention has for its object to pro` vide means for engaging a tubular blank and advancing it into position to be oper ated upon, then to withdraw and deposit the blank, repeating the operations successively and automatically.

A further object of the invention is to provide a magazine for supplying the blanks and to mount the supporting` vmandrel in line with the blank next in position to be fed and to advance this blank into position to be operated upon.

A further object of the invention is the provision of means for frictionally engaging the blanks to prevent them from being drawn into the swaging machine while operating upon a. blank to point it.

A still further object of the invention is the provision of a pair of cams one operat- A.ing upon the mandrel toforce it through the blank while the other operates upon the pusher to advance the tube into position to b e operated upon by the swaging machine, the cams serving as a positive stop for preventing the tubes from working back while beingroperated upon by the swaging ma- Y chine.

`With these andv other objects in view, the invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claims. j

In the accompanying drawings,

Figure` 1 is a side elevation of my improved machine showing the operating cams partly broken away and the swaging dies in section. f y

Figure 2 is a top view showing the parts p of the machine in section.

Figure 3 is a sectional end view on line 3 3 of Figure 2.

Figure 4 is a modification illustrating vertical adjustability ofthe magazine.

Figure 5 is a side elevation partly in section illustrating the general shape of the cam which drives the mandrel sleeve shown in section on the mandrel.

Figure 6 is a detail illustrating the general shape ofthe cam which drives the pusher on the mandrel.

Figure 7 is a perspective view illustrating the jaws of the frictional gripper and the ceive the next one to be operated upon.

Figure 8 is a 'sectional top view illustrating the spring b-locks for preventing a forward movement of the tube whilethe mandrel is being forced thereinto. r j

Figure 9 is a rear view of the detent blocks showing them slidably mounted j in their frames. j

Figure 1() is a perspective view of one of the tubes. Y

Figure 11 shows one end of a tube as having been swaged to a point. i

It is found in practiceof-` advantage in machines of this character to provide va magazine for supplying tubes to be operated uponand also to mounta mandrel inline with the lowermost tube whereby an advancing motion of the mandrel carries thesame through the tube, and to provide apusher for driving the tube into `the swaging device, also to provide direct acting cams foroperating the mechanism which cams accurately advance the work to be operated upon and positively prevent the work from sliding back while under action of the swager; also to provide frictional means for preventing the swaging action on the tube from drawing j the tube in faster than it should be fed; and the following is a detaileddescription of one form of machine for performing these functions. j

With reference to the drawings, 10 designates the frame of a machine which may be constructed in any desired form4 andlwhich may be supported on suitable legs 11, and in the outer end ofthis frame is mounted a cam shaft 13 on which the two operatingicams 14. and 15 are mounted and this shaft is driven through a large driving pulley 12 which is weighted by means of weights (not shown), to counterbalance the oppositely overhanging portions of the cams 141 and 15. On this frame 10, I have supported a magazine 16 in which a multiplicity of tubes 17 are mounted and fed from the feeder' 18 above.

This magazine may be provided with an angular base 19 see Figure 4, in which are two sets of adjustable screws 2O and 21, whereby the magazine may be adjusted vertically to bring the central axis of the lower most tubes of different diameters on the axial line of the mandrel, presently described. -At the lower end of this magazine,

Vback to hold its roll in contact with the "edge of the cam by mea-ns of the spring 230.

Another slide'l is used as a guide to move parallel with the slide`2et and on the slide 3l 'is mounted a post 32 to which is attached a Connection 33 Vto the tubular pusher 34 Cil mounted on the mandrel 26 and the outer end of'this -slide is provided with a friction vroll' Ywhich engages the edge 36 of 'the cam 14, this slide roll being held back against its cainby means of a st'rongftension spring 3T.

In order to arrest the forward advancing 'of the lowermost tube 38 when engaged by the mandrel a pair of yieldable blocks 39 are mounted inthe frame et() and press inwardly tow-ard ea'ch other by springs il. These blocks are provided with a tapering hole l2 throughthem and when this tube 38 is 'first advanced by thevmandrel its inner end engages the ledge of this tapering hole and is thus arrested until Vthe mandrel enters and passes through the tube, the pointed end of the mandrel then serving to press the blocks apart permitting the tube to be advanced by a follower pusher into position to be engaged by the swagingblocks 70.

It has Ibeen found in practice that as these svvagingV `blocks operate upon the tube to point it that the tube often has a tendency to advance and be drawn into the swaging hammers 'faster than it is pushed by its advancing cam. To prevent this laction of the tube while being operated upon, I have provided a gripper for holding the tube back and preventing such advancement, which `gripper comprises essentially a fixed jaw l which is mounted to slide on the two guide pms 52 and to which Jaw 1s attached an arm 53 leading down and around 'andback as at 254 so that its roller 55 will engage the edge 36 ofthey cam 14 and a swingingjaw 56' is mounted to slide endwise upon pin 57 and is supported at its upper end bythe fixed jaw by a keyor hinge plate 58 and this swinging jaw is pressed against the fixed jaw' by means 'of a strong tensionV spring 59. Both oftliese jaws are `groo'ved as at 60 to providean opening adapted to embrace the opposite sides of the tube to prevent it tfrom being drawn into the swaging machine except 'as fast as it is pushed by its operating cam.

In order to open this swinging jaw 56, I'

have provided the same with a handle 60 which Vextends over m positron to engage :the pointing operation.

the inclined edge 6l of a fixed blade 62 and as the cam la rotates it permits the arm 54 to recede under tension of spring 63 whereby this pin 60 is caused to ride up on the inclined edge of the blade 62 to withdraw the swinging edge -56 from contact with the fixed jaw 5l and after the cam lil has advanced the tube A38 -up into position to be engaged by the hammer blocks 40 then this arm bei is advanced by the same cam coming in contact with roller 55 to release this jaw to engage the tube, which jaw then frictionally retains the tube while it is being forced therethrough by action ofthe cam upon the pusher 34.

After the tube has 'been pointed the cams are rotated to withdraw the mandrel and the pusher and 'subsequently actsv upon this gripper permitting iti to be withdrawn under tension of spring' to be opened in the manner above described to release the finished tube to be `dropped into a receptacle below. This jaw then remains yopen until va fresh tube has been positioned when the operation is repeated. p

My improved machine is extremely simple and practical in construction and effective in its operation and by its use tubes are engaged successively, operated upon and discharged from the machine.

The foregoing 'description is directed solely towards the construction illustrated, but I desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to which the device is susceptible, the invention being `defined and limited only by the terms of the appended claims.

I claim: y

l. An improved feeding mechanism for swaging machines comprising a. feeding mandrel, means for supportingthe work in the path of the mandrel, means for advancing the mandrel to engage and move the blank into position to be operated upon, and means for gripping and retaining the work during the pointing operation.

2. yAn improved feeding mechanism for swaging machines comprising a feeding mandrel, means for supporting the work in the path of the mandrel, means for advancing the mandrel to engage and guide the work, independently operated'me'ans for a'dvancing the work into position tobe operated upon, and a frictional gripper for controlling the movement ofl the work vduring 3. An improved feeding mechanism, for swaging machines, comprising a feeding mandrel, means for supporting the 'work in the path of the mandrel, a directactin'g cam for advancing the mandrel linto al tube, a tube pusher mounted 'on 'the mandrel, a cam for advancing the tube pusher independently of the movement of said mandrel, and

means for frictionally gripping and ret-aining the tube during the pointing operation.

4. An improved feeding mechanism for swaging machines, comprising a magazine for carrying a plurality of tubes, a feeding mandrel operatively located in line With the tube positioned inthe magazine to be next operated upon, and means foi advancing the mandrel to engage this tube and advance the same into position to be operated upon.

5. An improved feeding mechanism for swaging machines, comprising a feeding mandrel, means for supporting the Work in the path of the mandrel, means for advancing the mandrel to engage and guide the work, independently operated means for advancing the Work into position to be operated upon, a frictional gripper for controlling the movement of the Work during the pointing operation, and` means for opening the jaws of the gripper for releasing the finished tube and receiving the next to be operated upon.

6. An improved feeding mechanism for swaging machines, comprising almagazine for carrying a plurality of the tubes, a yieldable rest for the lovvermost tube, a guiding mandrel operatively mounted in line with the next tube in the magazine to be fed, a pusher slidable on the mandrel to advance the tube from its yieldable restl to be operated upon.

7. An improved feeding mechanism for swaging machines, comprising a magazine for carrying a plurality of the tubes, a rest for the lowermost tube, means for adjusting the magazine vertically, a feeding mandrel, and means for advancing the mandrel and the tubes into position to be operated upon.

In testimony whereof l aiiiX my signature.

EDSON A. DEAN.

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