Claims
- 1. An apparatus for intermittently feeding stock material comprising:
- a cam shaft rotatable at a continuous preselected speed,
- an output shaft having a first end portion and a second end portion,
- a cam drive means connecting said output shaft first end portion to the cam shaft for generating intermittent oscillating rotational movement of the output shaft through a preselected angle of rotation,
- a slide block mounted in a housing and connected to a slide block drive shaft for intermittently feeding a preselected length of stock material, the slide block comprising: a slide block bottom portion slideably mounted on first tracks; a slide block top portion, slideable mounted on second tracks in the housing, and being disposed above the slide block bottom portion such that the stock material may be clamped therebetween by means of the housing; a rack secured to the base of the slide block bottom portion and a gear nonrotatably fixed on the drive shaft which drivingly engages the rack, and
- a linkage mechanism connected between the output shaft second end portion and the slide block drive shaft, wherein the linkage mechanism transmits the intermittent oscillating rotational movement of the output shaft to the slide block drive shaft which through the rack and gear causes a reciprocating horizontal movement of the slide block with predetermined dwell periods to intermittently advance a preselected length of stock material.
- 2. The apparatus as described in claim 1, wherein the linkage mechanism comprises a plurality of meshing gears.
- 3. The apparatus as described in claim 1, wherein the linkage mechanism is adjustable to feed different lengths of stock material.
- 4. The apparatus as described in claim 3, wherein the linkage mechanism comprises:
- an adjustable throw block nonrotatably secured to the second end portion of the output shaft having a longitudinally moveable slide portion connected to an adjusting means, and
- a plurality of meshing gears connected between the throw block and the slide block drive means.
- 5. The apparatus as described in claim 3, wherein the linkage mechanism comprises:
- an adjustable throw block nonrotatably secured to the second end portion of the output shaft having a longitudinally moveable slide portion connected to an adjusting means,
- a link nonrotatably fixed to the slide block drive means, and
- a transfer arm connected between the throw block and the link.
- 6. The apparatus as described in claim 1, wherein the apparatus further comprises: a piston means pivotably connected to the housing such that a downward movement of the piston means is evenly distributed through the housing and the slide block top portion to the stock material.
- 7. The apparatus as described in claim 6, wherein the slide block comprises:
- a material clamp drivingly connected to the cam shaft for securing the stock material during a dwell period to prevent movement thereof, and
- a slide block release mechanism for moving the stock material out of clamping engagement with the slide block during a dwell period.
- 8. The apparatus as described in claim 7, wherein the stock material is a wire or a bar.
- 9. The apparatus as described in claim 1, further comprising:
- a material clamp drivingly connected to the cam shaft for securing the stock material during a dwell period to prevent movement thereof.
- 10. The apparatus as described in claim 9, further comprising:
- a slide block release mechanism for moving the stock material out of clamping engagement with the slide block during a dwell period.
Parent Case Info
This is a continuation of co-pending application Ser. No. 06/848,98l filed on Apr. 7, 1986, now abandoned.
US Referenced Citations (10)
Continuations (1)
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Number |
Date |
Country |
Parent |
848981 |
Apr 1986 |
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