Claims
- 1. A tying apparatus for tying one or more of articles, the apparatus comprising:
- means for forming a U-shaped loop of a tying wire by feeding it out of a continuous stock of raw tying wire, said means comprising a first set of rolls disposed in one path of the U-shaped loop, a second set of rolls disposed in the other path of the U-shaped loop and means for deflecting the tying wire between said first set of rolls and said second set of rolls;
- means for guiding the U-shaped loop to wind it around an external surface of a portion to be tied of the article or articles so that a closed end and a rear end of the U-shaped loop lie substantially parallel with each other;
- means for twisting the closed end and the rear end of the U-shaped loop to tie the article or articles together; and
- means for cutting a rear end of the tying wire at an appropriate timing to an appropriate length.
- 2. A tying apparatus according to claim 1, wherein said means for deflecting the tying wire comprises a deflector having a substantially semicircular deflecting surface facing the tying wire and a guide wheel which is disposed inside said semicircular deflecting surface with a clearance therebetween to allow for passage of the tying wire.
- 3. A tying apparatus according to claim 2, wherein the second set of rolls are reversible in direction of rotation and including means for moving said means for deflecting so as to stand clear of the movement of the U-shaped loop.
- 4. A tying apparatus according to claim 2, wherein the first set of rolls are reversible in direction of rotation and including means for moving the guide wheel so as to stand clear of the movement of the U-shaped loop.
- 5. A tying apparatus according to claim 1, wherein said means for guiding the U-shaped loop includes a set of member like outside calipers at least one end of which is movable towards and away from the other such that, when closed, there is formed on an internal side thereof a substantially circular guide surface for the U-shaped loop to pass through.
- 6. A tying apparatus according to claim 1, wherein said means for guiding the U-shaped loop includes a member which is movable towards and away from one of the closed end and the rear end of the U-shaped loop such that the one of closed end and the rear end can be urged towards the other end of the U-shaped loop into a position appropriate for twisting them together.
- 7. A tying apparatus according to claim 6, wherein said member is provided in two places which correspond to the closed end and the rear end, respectively, of the U-shaped loop.
- 8. A tying apparatus according to claim 1, wherein said means for twisting comprises a hook which is tapered to become smaller towards the front end of the hook and which is capable of being inserted into, and pulled out of, the closed end of the U-shaped loop.
- 9. A tying apparatus according to claim 1, wherein said means for twisting comprises a pair of holding pieces front ends of which are movable towards and away from each other such that at least one of the closed end and both the closed end and the opposite end of the U-shaped loop is clamped by the holding pieces when the holding pieces are moved towards each other.
- 10. A tying apparatus according to claim 1, wherein said means for cutting the rear end of the tying wire is electrically operated.
- 11. A tying apparatus according to claim 1, wherein said means for cutting the rear end of the tying wire is pneumatically operated.
Priority Claims (2)
Number |
Date |
Country |
Kind |
4-078289 |
Feb 1992 |
JPX |
|
5-025661 |
Feb 1993 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/019,360 filed Feb. 18, 1993, now abandoned.
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Continuations (1)
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Number |
Date |
Country |
Parent |
19360 |
Feb 1993 |
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