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US 4,058,865 AGranted
Automatic high-speed cold heading machine
OwnerYuan Ho Leeinventor
Life of this patent
Estimating the term…
Abstract
An automatic high-speed cold heading machine which forms heads on wire blanks by means of punch, cutting, and ejector mechanisms, where the operations of the punch and the ejector mechanisms are performed simultaneously and, wherein, the punch, the cutting knife and the ejector mechanisms are driven simultaneously in continuous harmonic motion with no pause or dwell for the purpose of achieving stable high speed operation.
Claims11
An automatic high speed cold heading machine comprising the combination of:
- a main shaft which includes an eccentric portion thereon;
- punching means, including a ram operably connected to said main shaft so that said ram reciprocates upon rotation of said main shaft, for punching blanks in a die to form a finished product;
- a second shaft which includes an eccentric portion, said second shaft being operably geared to said main shaft;
- blank cutting means operably connected to said second shaft so that said blank cutting means reciprocates upon rotation of said second shaft for cutting blanks;
- means for receiving cut blanks from said blank cutting means;
- a rotary die head having a plurality of dies respectively positioned in alignment with said ram, said rotary die head being operably connected for rotation to said second shaft;
- a third shaft operably geared at about one end thereof to said main shaft;
- a fourth shaft operably geared to the other end of said third shaft, said fourth shaft including an eccentric portion thereof;
- ejecting means, including a rocker arm pivotably connected to the eccentric portion of said fourth shaft and coacting with rod means on said rotary die head, for ejecting blanks from said die head;
- and
- means for rotating said main shaft so that the main shaft imparts a compressive force against the rotary die head while the second shaft simultaneously drives the blank cutting means to cut a blank and feed a blank to the cut blank receiving means at the same time that the fourth shaft simultaneously drives the rocker arm to engage with and apply a force against a rod of said rod means causing said rod to cause a blank disposed in a die to be ejected therefrom, said blank cutting means, said punching means and said ejecting means being driven simultaneously and independently by said second shaft, said main shaft and fourth shaft respectively in a synchronized harmonious motion without significant pause or dwell.
8 more elements
An automatic high speed cold heading machine comprised of a main shaft having an eccentric portion and a ram means connected to the eccentric portion so that rotation of the shaft will impart a reciprocating movement to the ram means;
- a second shaft connected by means of bevel gears to suitable gears provided on said main shaft and having an eccentric portion thereon which has connected thereto a blank cutting means which is driven in reciprocating motion in response to the rotation of the second shaft, said cutting means including a shaft having a suitable blade affixed thereon and a blank stacking means suitable to receive blanks as they are cut by said blank cutter;
- a cylindrical rotary die head in alignment with said ram, having driving means operatively connected with said second shaft and having a plurality of suitable dies disposed on the end thereof nearest the ram, the portion of the die head behind each die being provided with a hollow bore coaxially with and communicative with the opening of the die, each bore having provided therein a rod and each rod extending out of the back of the rotary die head;
- a third shaft connected at one end to the main shaft by means of a gear that meshes with a suitable gear provided on the main shaft, the other end of the third shaft being provided with a bevel gear that meshes with a bevel gear that is provided with on one end of a fourth shaft, the fourth shaft having disposed thereon an eccentric portion, a rocker arm pivoted on the last said eccentric portion by means of a knockout connection, the rocker arm having an extension suitable to contact one of the above rods;
- the above cited construction characterized in that when the main shaft is rotated by means of a suitable drive means, the second and third shafts will rotate perpendicularly to the main shaft and the fourth shaft will rotate parallel to the main shaft, the main shaft will drive the ram to impart compressive force against the cylindrical rotary die head, and the second shaft driven by its gear-meshed connection to the main shaft, simultaneously drives the blank cutter to cut and complete feeding of a blank into the blank stacker, the fourth shaft simultaneously drives the rocker arm, by means of the rocker arm pivotal connection on the eccentric portion provided on said fourth shaft, to cause the rocker arm extension means to engage with and apply force against one of the rods, causing that rod to travel a specified distance into the die head through the hollow bore and to thus eject a blank from a specific die, the cutting, punching and ejecting operations resulting from simultaneous and independent operation of said shafts in a synchronized harmonious manner without significant pause or dwell.
1 more element
Dependencies are inferred from the claim text.