A bag filling and sealing machine includes a bag holder, a bag opening and filling station, and a sealing station. The bag holder holds wicketed bags in a manner that allows the bags to be easily torn from the holder. A funnel assembly successively opens each bag, tears the bag from the bag holder,
A bag filling and sealing machine includes a bag holder, a bag opening and filling station, and a sealing station. The bag holder holds wicketed bags in a manner that allows the bags to be easily torn from the holder. A funnel assembly successively opens each bag, tears the bag from the bag holder, fills the bag with material, and releases the bag to a grabber assembly. The grabber assembly engages the sides of the bag while the bag is attached to a funnel assembly and later pulls the sides of the bag away from each other so that the top of the bag is closed and ready to seal when the bag is delivered to a sealing apparatus. The grabber assembly moves in a manner so as to minimize the lost height when moving from the filling station to the sealing station.
대표청구항▼
1. A bag handling machine for filling material into a bag and sealing the bag; the machine comprising:a first bag manipulation station; a second bag manipulation station; a grabber assembly adapted to move the bag from the first bag manipulation station to the second bag manipulation station; the gr
1. A bag handling machine for filling material into a bag and sealing the bag; the machine comprising:a first bag manipulation station; a second bag manipulation station; a grabber assembly adapted to move the bag from the first bag manipulation station to the second bag manipulation station; the grabber assembly pivoting to move the bag from the first bag manipulation station to the second bag manipulation station; and the grabber assembly including a pair of grabbers adapted to grasp the bag; the grabber assembly moving the grabbers away from each other as the grabber assembly pivots to move the bag from the first bag manipulation station to the second bag manipulation station. 2. The machine of claim 1, further comprising a frame;each of the grabbers having an assembly adapted to move the grabber between extended and retracted positions; a member extending between the assembly and the frame; the member moving the assembly and the grabber to an extended position when the member is in the first position; and the member moving the assembly and the grabber to a retracted position when the member is in the second position. 3. The machine of claim 1, wherein the first bag manipulation station is disposed higher than the second bag manipulation station.4. The machine of claim 3, wherein the pivoting movement of the grabber assembly initially moves the bag up with respect to the first bag manipulation station.5. The machine of claim 4, wherein the grabber assembly pivots about a pivot axis; the grabber assembly including a pair of arms that each have an upper end and a lower end; the lower end of each arm being offset from the pivot axis of the grabber assembly.6. A bag handling machine for filling material into a bag and sealing the bag; the machine comprising:a first bag manipulation station; a second bag manipulation station; a grabber assembly adapted to move the bag from the first bag manipulation station to the second bag manipulation station; the grabber assembly pivoting to move the bag from the first bag manipulation station to the second bag manipulation station; the pivoting movement of the grabber assembly initially moves the bag up with respect to the first bag manipulation station; and the grabber assembly pivoting about a pivot axis; the grabber assembly including a pair of arms that each have an upper end and a lower end; the lower end of each arm being offset from the pivot axis of the grabber assembly. 7. The machine of claim 6, further comprising a drive arm connected to a drive rod and an actuator connected to the drive arm; the actuator adapted to rotate the drive rod about the pivot axis by moving the drive arm; the arms of the grabber assembly being connected to the drive rod.8. An assembly for moving a bag in a bag handling machine having a frame and a bag pick up position; the assembly comprising:a drive rod pivotally mounted to the frame of the bag handling machine between first and second positions; a pair of arms extending up from the drive rod; each of the arms having a lower end and an upper end; the upper ends of the arms being positioned on opposite sides of the bag pick up position of the bag handling machine; a grabber positioned at the upper end of each arm; each of the grabbers having a cam assembly adapted to move the grabber between extended and retracted positions; a cam rod extending between the cam assembly and the frame; the cam rod moving the cam assembly and the grabber to an extended position when the drive rod is in the first position; and the cam rod moving the cam assembly and the grabber to a retracted position when the drive rod is in the second position. 9. The assembly of claim 8, further comprising a drive arm connected to the drive rod and an actuator connected to the drive arm; the actuator adapted to rotate the drive rod by moving the drive arm.10. The assembly of claim 8, wherein the drive rod has a pivot axis; each of the arms having a lower end that is offset from the pivot axis of the drive rod.11. The assembly of claim 8, wherein each of the cam assemblies includes a cam pivotally mounted to the arm supporting the cam assembly and a cam follower connected to the grabber; the cam engaging the cam follower.12. The assembly of claim 11, further comprising a pair of cam followers connected to the grabber on either side of the cam.13. The assembly of claim 11, wherein the cam rod is connected to the cam.14. The assembly of claim 11, wherein the cam is an elongated curved cam that is concave when viewed from the position of the bag.15. The assembly of claim 8, wherein the grabbers are closer to each other in the extended position than when the grabbers are in the retracted position.16. An assembly for holding and closing a bag in a bag handling machine having a frame and a bag pick up position; the assembly comprising:a pair of grabbers adapted to be supported by the frame in positions on opposite sides of the bag pick up position; each of the grabbers having a base slidably mounted on a slide rod between extended and retracted positions; each of the grabbers further having a hand assembly slidably and rotatably mounted to the base: and a finger assembly connected to the hand assembly; the finger assembly pivoting with respect to the hand assembly. 17. The assembly of claim 16, further comprising an actuator mounted to the base of the grabber; the actuator being connected to the hand assembly to pivot the hand assembly with respect to the base.18. The assembly of claim 17, further comprising a stationary cam connected to the base of the grabber; the hand assembly being slidingly mounted to the stationary cam.19. The assembly of claim further comprising a finger assembly actuator carried by the hand assembly.20. The assembly of claim 16, further comprising a drive rod pivotally mounted to the frame of the bag handling machine between first and second positions;a pair of arms extending up from the drive rod; each of the arms having a lower end and an upper end; the upper ends of the arms being positioned on opposite sides of the bag pick up position of the bag handling machine; and a grabber positioned at the upper end of each arm. 21. The assembly of claim 20, wherein each of the grabbers has a cam assembly adapted to move the grabber between extended and retracted positions;a cam rod extending between the cam assembly and the frame; the cam rod moving the cam assembly and the grabber to an extended position when the drive rod is in the first position; and the cam rod moving the cam assembly and the grabber to a retracted position when the drive rod is in the second position. 22. The assembly of claim 21, wherein each of the cam assemblies includes a curved cam pivotally mounted to the arm supporting the cam assembly and a cam follower connected to the grabber; the cam engaging the cam follower.23. The assembly of claim 22, further comprising a pair of cam followers connected to the grabber on either side of the cam.24. The assembly of claim 22, wherein the cam rod is connected to the cam.25. An assembly for holding and closing a bag in a bag handling machine having a frame and a bag pick up position; the assembly comprising:a pair of grabbers adapted to be positioned on opposite sides of the bag pick up position; each of the grabbers having a base, a hand assembly, and a finger assembly; each hand assembly being connected to the base at first and second connections; the first connection sliding in a line with respect to the base and the second connection rotating along an arc with respect to the base; and a finger assembly connected to the hand assembly; the finger assembly pivoting with respect to the hand assembly and adapted to engage the bag at the bag pick up position. 26. The assembly of claim 25, wherein the base of each grabber is movable between first and second positions; the bases being closer to each other in the first position than when the grabbers are in the second position.27. The assembly of claim 26, further comprising a drive rod pivotally mounted to the frame of the bag handling machine between first and second positions;a pair of arms extending up from the drive rod; each of the arms having a lower end and an upper end; the upper ends of the arms being positioned on opposite sides of the bag pick up position of the bag handling machine; and a grabber positioned at the upper end of each arm. 28. The assembly of claim 27, wherein each of the grabbers has a cam assembly adapted to move the base between the first and second positions of the base; anda cam rod extending between the cam assembly and the frame; the cam rod adapted to move the cam assembly when the drive rod moves. 29. The assembly of claim 25, wherein the second connection is a drive arm that pivots with respect to the base.30. The assembly of claim 29, wherein the first connection is a stationary cam connected to the base of the grabber; the hand assembly being slidingly mounted to the stationary cam.31. The assembly of claim 25, further comprising a finger assembly actuator carried by the hand assembly.
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