US3480220A - Machine for winding and transferring hanked material - Google Patents

Description

2 Sheets-Sheet 1 NOV- 25, 1969 H. F. HANscoM MACHINE FOR WINDING AND TRANSFERRING HANKED MATERIAL Filed Sept.- 5. 1967 Nov. 25, 1969 H. F. HANscoM MACHINE FOR WINDING AND TRANSFERRING HANKED MATERIAL Filed Sept. 5, 1967 2 Sheets-Sheet 2 INVENT-OR. F. HANsooM HARRIS ATTORNEYS "United States Patent 3,480 220 MACHINE FOR WINDIN AND TRANSFERRING HANKED MATERIAL Harris F. Hanscom, Barrington, RJ., assignor to H. F.

Hanscom & Company, Inc., a corporation of Rhode Island Filed Sept. 5, 1967, Ser. No. 665,421 Int. Cl. B65h 67/ 04 U.S. Cl. 242-53 6 Claims ABSTRACT OF THE DISCLOSURE A winding and transfer means having a pair of grasping lingers mounted on an arm which is vertically reciprocable and angularly rotatable between a winding turntable and a wrapping station.

Background of the invention In the prior `art there are various mechanisms which are 'adapted to pick up an article and to move it to another station, Many of the prior art devices lack universal application to a variety of articles since they are not arranged in a manner whereby the article may in effect be lifted out of a container and completely clear thereof and then angular- 1y rotated -to another station for further processing. The instant device achieves this result -with repeatability. Particularly in the wire industry the winding and tieing of cords has never been machine accomplished.

Summary A `device for winding and transferring particularly a hanked cord-like member that comprises a pick-up member that is movable between a first winding station and a second wrapping station and which at each station reciprocates so that in the downward position will grasp the article and/ or release it as the case might be.

Description of the drawings Description o-f the preferred embodiments The transfer mechanism is basically mounted on platforms and 12 which are held in spaced relationship. For convenience of illustration there is shown 'mounted on the platform 12 a winding turntable 40 (FIG. 1) which is driven through a right angular drive means 50 that in turn is coupled back to motor 13 via a shaft 21 and drive means 18, shaft 21 having included along its length a clutch engaging means 22 and a brake 52. Motive power for operating the transfer mechanism is taken from the motor 13 by way of a belt 14 to the input shaft 15 of a combined clutch and brake unit 16. Within -the unit 16 there is contained an electromagnetic brake and an electromagnetic clutch which performnormal functions attributable to these devices. The output of the clutch brake unit as at 186 is coupled by a right angular drive (not shown) -to shaft 184 which has mounted thereon a cam 182 that provides all of the motions necessary for the operation of the transfer mechanism.

3,480,220 Patented Nov. 25, 1969 "lee Description of transfer mechanism The transfer mechanism of this invention briefly consists of grasping lingers which will pick up an article at a rst station, such as on a turntable 40 and move it to another or second station such as wrapping station 220 (FIG. 6) that is angularly related to the lirst station. To achieve this result, an outer tubular shaft is received for rotative support in a bearing 121 that is mounted on the platform 12 and this shaft extends downwardly through a second bearing support 122 on platform 10 and terminates with a spur gear 123. On the upper end of this tubular shaft 120, there is lixedly attached a block-like member 125 which has a pair of rollerfollowers 126 aixed thereto and internally of the tubular shaft 120 there is slidab'ly received in suitable bushings not shown a post 128. The post 128 has an arm 129 affixed to the upper end thereof as by a mounting block 130 land immediately below the mounting block there is also affixed an L-shaped camming bracket 132 which has a T-shaped section 133 and an upper flat surface 134. The pair of roller followers 126 straddle the T-shaped section 133 and in this fashion the post 128 and the shaft 120 are coupled together for rotary movement but are adapted for relative reciprocation.

At the end of the arm 129 there is mounted a pair of brackets 136 which `carry mounting plates 137. At the lower end of each of the mounting plates 137 on pivots 138, a pair of scissor-like arms 139, are mounted, arms 139 having operating rods 141 coupled thereto while arms 140 have operating rods 142 coupled thereto. The two operating rods 141 and 142 are connected to a cross head 145 which is provided with reduced ends such as 146 that ride in slots 147 against the pressure of compression springs 148 in the containers 136. To actuate the arms 139, 140, the cross head 145 is coupled through a post 149 (FIG. 2) to a crank arm 150 which in turn is coupled to a primary operating crank arm assembly 152 by a coupling rod 153. The arm assembly 152 is pivoted by a pin 154 to an extension of the block 130. The portion 155 of assembly 152 carries at its end a roller 156 and is provided intermediate thereof with a latching pin 157. A latch means is pivoted Vas at 161 to the bracket 132 and has a latching surface 163 upon which normally rests the latch pin 157. The latching arm 160 is normally springbiased by a spring 165 in the position as shown in FIG. 1, and in this position the crank arm assembly 152 is held in a counterclockwise position which in turn holds the cross head 145 downwardly relative to the arm 129 so that the grasping lingers 139, 140 are in an open position as shown in dotted lines in FIG. 3.

This mechanism that has been described so far is adapted to pick up an object and then rotate through an arc depositing it at a wrapping station for further processing. While by no means limited to an angular variation of 90 the apparatus, however, has been illustrated and will be described with that particular angular rotation in mind. The lower end of the post 128 (FIG. 3) is provided with a slotted collar which is conveniently held on the en-d of the post 128 by a pair of locking nuts 171. Extending radially into the slot 173 in the collar 170 are pins 172 attached to the yoke end 174 of lever 175 that is iixedly pivoted to the main platform 10 of the machine by a bracket 177.

A cam follower is mounted on the arm 175 as at 178, and this cam follower is adapted to ride in the cam groove of the cam 182 which cam is adapted to rotate in the direction of the arrow 183. Cam 182 is mounted on a shaft 184 which is driven through a series of gears to provide `a right-angular drive in a manner Well known to those versed in the machine art and is effectively coupled to the output shaft 186 of the combined clutch brake unit generally designated 16. Cam 182 is a double faced cam and on the reverse side thereof as shown in dotted lines is another cam groove designated 188, and in this groove a cam follower 189 is received which follower is positioned on the end of a bell crank 190 that is pivoted to a support bracket 191 as at 192. The other end of the bell crank has coupled thereto a rack 194 which rack is slidably guided in blocks 195 so as to engage the pinion 123 on shaft 120.

Assuming that the device is ready for operation and the main switch 100 (FIG. 5) is closed, energizing the motor 13, depressing switch contact 200 will close the circuit through a relay coil 201 and the normally energized brake coil 202 which is energized through normally closed contactor 203 will be opened, while contactor 204 will energize clutch coil 205, coils 202 and 205 being located within the clutch brake unit 16. This will then apply rotative power to the shaft 186 and the cam 182 will begin to rotate in a clockwise direction as viewed in the drawings. The first operation desired is the descending of the gripping fingers to pick up the article, and no rotative movement of the arm 129 is desired. To insure that no rotative movement occurs, a brake 206 of an electromagnetic type is mounted on the tubular shaft 120 and the cam slot 188 is designed in such a way that the cam follower 189 will be following in a circular path during the initial rotary movement. Lever 175 is brought downwardly by the action of the cam follower 178 being brought close to the rotative center of the cam, and this pulls the post 128 downwardly and all of the arms that are mounted thereon. At the bottom of the grasping stroke of the post 128, the bell crank latching arm 160 will be engaged by a fixed pin or tripping means 207 (FIGS. 1 and 2) which is mounted on a post 212. This rocks the bell crank 160 releasing the latching pin 157 from its latching shelf 163, thereby allowing `compression springs 148 to close the grasping fingers 139 and 140 about the article to be picked up. As the cam 182 continues to rotate, the follower 178 will come out of the depression in the cam groove 180 and will raise the post 128 to its full upward travel.

During the preceding operation the brake 206 has been engaged as normally closed switch contact 210l has maintained that condition. There is provided, however, on the surface of the cam 182 a switch operating protrusion 211 which now opens the contact 210 deactivating the brake 206 for rotation of arm 129. At this point of rotation of the cam 182, the follower 189 begins to move radially inward of the cam 182 in its groove 188. This rocks the bell crank 190 and reciprocates the rack 194 which in turn rotates the spur gear 123 and the shaft 120 a predetermined angular amount which in the present instance is shown as 90 in FIG. 3 of the drawings. Protrusion 211 on the cam 182 disengages from switch 210 closing the switch and engaging the brake preferably a few degrees ahead of the desired stopping point so as to provide rotational inertia braking and again the cam follower 178 is in a position to bring the post 128 downwardly as illustrated in FIG. 3. When the post approaches the bottom of its travel, the roller 156 on the portion 155 of assembly 152 (see FIG. 4) engages a fixed post 212, rocking the arm 152 counterclockwise and in turn moving the grasping lingers 139, 140 to an open position as the cross head 145 moves downwardly against the pressure of compression springs 148. The article grasped is thus released into Wrapping station 220 (FIG. 6). Tension spring 165 places the latching edge under pin 157 so that the parts are now reset into the position that is shown in FIG. 1. The cam 182 is still rotating, and at the proper point in its operation, the cam 214 re-engages the switch contactor 210 and releases the brake 206, and the cam follower 189 will now move radially outward of the cam 182 following in its cam slot 188 sliding the rack 194 to the left as viewed in FIG. 3 and rotate the shaft 120 back to its original angular position as illustrated in FIG. 1, the pin 214 disengaging the switch `Contact 210v la few degrees before the stop position is reached to again absorb the inertia of rotation. Through timing means connected to the motor drive, the main start switch 200 is disengaged and the entire cycle is stopped with the contactor 203 energizing the brake coil 202 of the clutch brake unit 16, while at the same time declutching by removal of power from the clutch coil 205.

I claim:

1. A device for hanking a cord-like member comprising in combination a winding means having a pair of posts about which the cord-like member is wound, a wrapping station, a transfer means movable between the winding means and the wrapping station, said transfer means having an arm rotatable in an arc, grasping lingers pivotally mounted adjacent the end of said arm, an operating linkage for said fingers, spring means normally urging said fingers to closed position, latch means holding said fingers in open position, said arm being vertically mounted for reciprocation downward into gripping position, means for reciprocating said arm downwardly and upwardly, trip rrieans, said trip means engaging said lach on downward movement of said arm to close said fingers, means rotating said arm in an arc, said arm rotating in an arc in timed sequence yafter completion of upward movement to a second position, said reciprocating means moving said arm downwardly, abutment means, said operating linkage for said fingers engaging said abutment means to open the fingers and permit the latch means to relatch, said arm moving upwardly and arcuately to initial position.

2. A device for hanking a cord-like member comprising in combination a winding means having a pair of posts about which the cord-like member is wound, a wrapping station, a transfer means movable between the Winding means and the wrapping station, said transfer means having an arm rotatable in an arc, said arm mounted on a post, said post received within a tubular shaft, said shaft having a gear affixed thereto, rack means, said rack means engaging said gear, said post having a lever coupled to one end thereof, said arm coupled to the other end of said post, means coupling said post and shaft together for rotary movement and for relative reciprocating movement, gripping lingers pivotally mounted adjacent the end of said arm, an operating linkage for said fingers, spring means normally urging said lingers to closed position, latch means coupled to said operating linkage for holding said fingers in open position, means for moving said lever whereby said post and arm are reciprocated downward into gripping position, means on said shaft for engaging said latch on downward movement of said post to trip said latch and close said fingers, said lever actuating means causing said post to move upwardly, rack operating means being actuated in timed sequence with said lever actuating means to reciprocate said rack after completion of upward movement of said post and cause said post and shaft to move in an arc to a second position, said lever actuating means operating in timed sequence to said rack operating means to cause said post to reciprocate downward, abutment means, said operating linkage for said fingers engaging said abutment means on completion of downward movement of said post to open said lingers and permit the latch means to relatch, said lever actuating means moving said post upwardly and said rack operating means moving in timed relationship to return said shaft and post to initial position.

3. A device as in claim 2 wherein said lever actuating means and said rack operating means are commonly coupled cams.

4. A device as in claim 3 wherein brake means are located on said tubular shaft and are operated in timed sequence by said common cam means.

5. An article transfer means having an arm rotatable in an arc, grasping fingers pivotally mounted adjacent the end .of said arm, an operating linkage for said fingers, spring means normally urging said fingers to closed position, latch means holding said fingers in open position, said arm being vertically reciprocable downward into gripping position, downwardly and upwardly; trip means engaging said latch on downward movement of said arm to close said fingers, means rotating said arm in an arc, said arm rotating in timed sequence after completion of upward movement to a second position, said reciprocating means moving said arm downwardly, abutment means, said operating linkage for said lingers engaging said abutment means to open the lingers and permit the latch means to relatch, said arm moving upwardly and arcuately to initial position.

6. An article transfer means having an arm rotatable in an arc, said arm mounted on a post, said post received within a tubular shaft, said shaft having a gear afxed thereto, rack means, said rack means engaging said gear, said post having a lever coupled to one end thereof, said arm coupled to the other end of said post, means coupling said post and shaft together for rotary movement and for relative reciprocating movement, gripping fingers pivotally mounted adjacent the end of said arm, an operating linkage for said fingers, spring means normally urging said fingers to closed position, latch means coupled to said operating linkage for holding said fingers in open position, means for moving said lever whereby said post and arm are reciprocated downward into gripping position, means on said shaft for engaging said latch on downwa-rd movement of said post to trip said latch and close said fingers, said lever actuating means causing said post to move upwardly, rack opera-ting means being actuated in timed sequence with said lever actuating means to reciprocate said rack after completion of upward movement of said post and cause said post and shaft to move in an arc to a second position, said lever actuating means operating in timed sequence to said rack operating means to cause said post to reciprocate downward, abutment means, said operating linkage for said 4fingers engaging said abutment means on completionof downward movement of said post to open said lingers and permit the latch means to relatch, said lever actuating means moving said post upwardly and said rack operating means moving in timed relationship to return said shaft and post to initial position.

References Cited UNITED STATES PATENTS 1,771,641 7/1930 Lamb. 2,204,869 6/1940 Schenck 242-53 2,933,205 4/1960 MacDonald et al.

NATHAN L. MINTZ, Primary Examiner

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