초록 ▼

Methods, devices and computer program products automatically package an object in a covering material such as casing and/or netting by: (a) automatically pushing at least one object through a product chute; (b) pulling a covering material upstream of the product chute off an exterior surface of the

Methods, devices and computer program products automatically package an object in a covering material such as casing and/or netting by: (a) automatically pushing at least one object through a product chute; (b) pulling a covering material upstream of the product chute off an exterior surface of the product chute to automatically enclose the object in the covering material as the object exits the product chute; and then (c) applying a clip to the covering material to secure the object in the packing material.

대표청구항 ▼

That which is claimed is: 1. A system, for automatically enclosing a semi-solid or solid product in a covering material, comprising: an elongate product chute having an outer surface and opposing receiving and discharge end portions with an interior cavity extending therethrough; a product pusher m

That which is claimed is: 1. A system, for automatically enclosing a semi-solid or solid product in a covering material, comprising: an elongate product chute having an outer surface and opposing receiving and discharge end portions with an interior cavity extending therethrough; a product pusher mechanism having a pusher head that is configured to controllably automatically advance into and retract from the product chute to thereby advance a product from a position upstream of the product chute, through the product chute and out of the discharge end portion of the product chute; and a clipper mechanism disposed downstream of the product chute, the clipper mechanism configured to automatically apply at least one clip to a covering material that encloses the product from the product chute, wherein the clipper mechanism is retractable and, in operation, the clipper mechanism is configured to travel toward the product to apply at least one clip and then travel away from the product so as to allow the product to move downstream thereof, and wherein the clipper mechanism defines a clip window for supplying at least one closure clip to an underlying product, the system further comprising first and second spaced apart clipper gathering plates mounted to the retractable clipper mechanism so that, in operation, the clipper gathering plates advance and retract in concert with the clipper mechanism, a respective clipper gathering plate disposed on each side of the clip window, and wherein the clipper gathering plates are configured with a pair of outwardly extending fingers defining respective inclined upper and lower surfaces, and wherein, when viewed from the side, the fingers have an intermediate gap space between the upper and lower surfaces, and wherein the gap space narrows as the fingers approach the clipper mechanism. 2. A system according to claim 1, wherein the clipper mechanism includes a die positioned intermediate the first and second clipper gathering plates with the die held proximate the innermost edge portion of the gap space defined by the fingers during operation so that covering material is automatically gathered and held in the innermost portion of the gap space above the die in communication with the clip window. 3. A system according to claim 2, wherein, in operation, the fingers reach the product before the die and guide the covering material to converge proximate the clip window. 4. A system according to claim 3, wherein the system is configured to apply netting covering material, the system further comprising first and second laterally extendable and retractable netting gathering plates disposed downstream of the product chute, each netting gathering plate alignably positioned across from a respective clipper gathering plate, to cooperate with the clipper gathering plates to gather the netting. 5. A system according to claim 4, wherein, in operation, corresponding pairs of the clipping gathering plates and the netting gathering plates travel toward each other to trap gathered netting in a small gap space defined therebetween. 6. A system according to claim 4, wherein the clipper mechanism further comprises a pivotable gate that is disposed intermediate the first and second clipper gathering plates and is configured to automatically pivot downward so that a leading edge portion thereof is substantially vertical and positioned proximate the innermost portion of the clipping gathering plates during active application of a clip and then automatically pivots away. 7. A system according to claim 6, further comprising a pair of automatically extendable and retractable netting brake grippers that are configured to move inwardly and outwardly substantially in concert toward and away from the product chute to selectively press the netting against the outer surface of the product chute. 8. A system according to claim 7, wherein the pair of netting brake grippers is disposed proximate the discharge end portion of the product chute. 9. A system according to claim 8, wherein the clipping mechanism further comprises interchangeable retractable first and second cutting cartridges, each releasably mounting to a common mounting structure on the clipping mechanism, the first cartridge comprising a hot knife and the second cartridge comprising a cutting knife, each cartridge configured to advance to sever the covering material between first and second clip locations. 10. A system according to claim 9, wherein the common mounting structure comprises a groove configured and sized to slidably receive a mounting platform on each of the first and second cartridges. 11. A system for automatically enclosing a semi-solid or solid product in a covering material, comprising: an elongate product chute having an outer surface and opposing receiving and discharge end portions with an interior cavity extending therethrough; a product pusher mechanism having a pusher head that is configured to controllably automatically advance into and retract from the product chute to thereby advance a product from a position upstream of the product chute, through the product chute and out of the discharge end portion of the product chute, wherein the product pusher mechanism causes the pusher head and an associated actuation rod to reciprocally travel in the product chute; and a clipper mechanism disposed downstream of the product chute, the clipper mechanism configured to automatically apply at least one clip to a covering material that encloses the product from the product chute, wherein the product pusher mechanism comprises a pair of spaced apart elongate rearwardly extending guidewalls having opposing first and second end portions, the first end portions attached to opposing sides of a product contacting member of the pusher head, with one of the second end portions attached to one of two spaced apart elongate guide rods residing rearward of the product contacting member and with the other second end portion attached to the other elongate guide rod, wherein the guide rods reside on opposing sides of the pusher head actuation rod, and wherein the guidewalls have a length that is greater than a length of the pusher head product contacting member. 12. A system according to claim 11, wherein the actuation rod is in communication with a statically mounted actuation cylinder, wherein the pusher head comprises a substantially planar plate with a continuous surface that defines a forward portion that is adapted to contact the product, wherein the guidewalls are sized and configured as semi-circularly curved plates that define an open cavity therebetween rearward of the pusher head plate, and wherein the pusher head has a substantially greater cross sectional area than that of the attached actuation rod or the actuation cylinder. 13. A system for automatically enclosing a semi-solid or solid product in a covering material, comprising: an elongate product chute having an outer surface and opposing receiving and discharge end portions with an interior cavity extending therethrough; a product pusher mechanism having a pusher head that is configured to controllably automatically advance into and retract from the product chute to thereby advance a product from a position upstream of the product chute, through the product chute and out of the discharge end portion of the product chute; a clipper mechanism disposed downstream of the product chute, the clipper mechanism configured to automatically apply at least one clip to a covering material that encloses the product from the product chute; and a pair of gripping members residing on opposing sides of the chute configured to travel a brake stroke cycle substantially in concert, the brake stroke cycle having axial and lateral movements sufficient to allow the gripping members to press against then release the covering on the product chute. 14. A system for automatically enclosing a semi-solid or solid product in a covering material, comprising: an elongate product chute having an outer surface and opposing receiving and discharge end portions with an interior cavity extending therethrough; a product pusher mechanism having a pusher head that is configured to controllably automatically advance into and retract from the product chute to thereby advance a product from a position upstream of the product chute, through the product chute and out of the discharge end portion of the product chute, wherein the product pusher mechanism causes the pusher head and an associated actuation rod to reciprocally travel in the product chute; and a clipper mechanism disposed downstream of the product chute, the clipper mechanism configured to automatically apply at least one clip to a covering material that encloses the product from the product chute, wherein the product chute interior cavity has a cross-sectional profile that is sized and configured to snugly receive and/or compress a product as the product moves along the length thereof, wherein the product pusher head is sized and configured to substantially occupy the cross-sectional area of the interior cavity, and wherein the product pusher mechanism comprises a stabilizer mechanism with at least one elongate rod disposed on either side of an actuation cylinder that is in communication with the actuation rod, with at least one elongate rod attached to opposing sides of the product pusher head with the actuation cylinder residing above and therebetween. 15. A system for automatically enclosing a semi-solid or solid product in a covering material, comprising: an elongate product chute having an outer surface and opposing receiving and discharge end portions with an interior cavity extending therethrough; a product pusher mechanism having a pusher head that is configured to controllably automatically advance into and retract from the product chute to thereby advance a product from a position upstream of the product chute, through the product chute and out of the discharge end portion of the product chute, wherein the product pusher mechanism causes the pusher head and an associated actuation rod to reciprocally travel in the product chute; a clipper mechanism disposed downstream of the product chute, the clipper mechanism configured to automatically apply at least one clip to a covering material that encloses the product from the product chute; and a controller in communication with the clipper mechanism and the product pusher mechanism, wherein the controller is configured to automatically activate the clipper mechanism to apply the at least one clip to covering material on a target product discharged from the product chute after a forward stroke cycle of the pusher head upon partial retraction of the pusher head toward the receiving end of the product chute. 16. A system for automatically enclosing a semi-solid or solid product in a covering material, comprising: an elongate product chute having an outer surface and opposing receiving and discharge end portions with an interior cavity extending therethrough; a product pusher mechanism having a pusher head that is configured to controllably automatically advance into and retract from the product chute to thereby advance a product from a position upstream of the product chute, through the product chute and out of the discharge end portion of the product chute, wherein the product pusher mechanism causes the pusher head and an associated actuation rod to reciprocally travel in the product chute; a clipper mechanism disposed downstream of the product chute, the clipper mechanism configured to automatically apply at least one clip to a covering material that encloses the product from the product chute; and a product transfer zone with a floor and ceiling defining an interior space with a fixed size which directs product to travel into the product chute receiving end portion positioned upstream of the receiving end portion of the product chute and downstream of the pusher head when the pusher mechanism is in a retracted configuration, wherein the product transfer zone is configured to automatically advance a product into the system so that the product is aligned with the product pusher mechanism and the cavity of the product chute. 17. A system according to claim 16, wherein the product transfer zone has a movable floor and a ceiling thereabove, the system further comprising a product proximity sensor disposed in the product transfer zone configured to detect products residing on the movable floor as the products serially approach or pass by the proximity sensor to automatically identify when a product is in position upstream of the product chute. 18. A system according to claim 17, wherein the product proximity sensor comprises an ultrasonic sensor held by the ceiling in the product transfer zone. 19. A system according to claim 16, wherein the floor comprises a movable travel floor. 20. A system according to claim 19, wherein the movable floor is configured to controllably advance and stop. 21. A system according to claim 20, wherein the travel floor comprises a conveyor that travels substantially orthogonal to the axial direction of the product pusher mechanism. 22. A system according to claim 20, wherein the moveable floor comprises an endless travel floor that is configured to automatically cooperate with the movement of the product pusher mechanism to, in serial order, advance to deliver a product undergoing packaging to the product transfer zone, stop while the pusher mechanism extends to force the delivered product in the product transfer zone through the product chute and discharge the product therefrom, then advance to deliver a next product. 23. A system for automatically enclosing a semi-solid or solid product in a covering material, comprising: an elongate product chute having an outer surface and opposing receiving and discharge end portions with an interior cavity extending therethrough; a product pusher mechanism having a pusher head that is configured to controllably automatically advance into and retract from the product chute to thereby advance a product from a position upstream of the product chute, through the product chute and out of the discharge end portion of the product chute; a clipper mechanism disposed downstream of the product chute, the clipper mechanism configured to automatically apply at least one clip to a covering material that encloses the product from the product chute; and a safety interlock configured to automatically detect the presence or absence of a product chute from the system and to inhibit operation of at least the product pusher mechanism when the product chute is not in proper operative position. 24. A system for automatically enclosing a semi-solid or solid product in a covering material, comprising: an elongate product chute having an outer surface and opposing receiving and discharge end portions with an interior cavity extending therethrough, wherein the product chute has a floor; a product pusher mechanism having a pusher head that is configured to controllably automatically advance into and retract from the product chute to thereby advance a product from a position upstream of the product chute, through the product chute and out of the discharge end portion of the product chute, wherein the product pusher mechanism causes the pusher head and an associated actuation rod to reciprocally travel in the product chute in an unsealed manner, and wherein the product pusher mechanism is configured so that the pusher head and associated rod travel substantially horizontally above the floor of the chute; and a clipper mechanism disposed downstream of the product chute, the clipper mechanism configured to automatically apply at least one clip to a covering material that encloses the product from the product chute, wherein the system comprises a product transfer zone residing between the pusher mechanism in a retracted configuration and the product chute, the transfer zone being configured to serially introduce encased products having a shape, the transfer zone having a static interior space configuration that does not change the encased product shape, wherein the product transfer zone is configured to automatically advance a product into the system so that the product is aligned with the product pusher mechanism and the cavity of the product chute, and wherein the product pusher mechanism automatically repetitively actuates responsive to electronic input from at least one position sensor residing in the product transfer zone upstream of the product chute to serially automatically push products through the product chute and enclose the respective products in serial lengths of a sleeve of the covering material that is pulled from the product chute. 25. A system for automatically enclosing a semi-solid or solid product in a covering material, comprising: an elongate product chute having an outer surface and opposing receiving and discharge end portions with an interior cavity extending therethrough; a product pusher mechanism having a pusher head that is configured to controllably automatically advance into and retract from the product chute to thereby advance a product from a position upstream of the product chute, through the product chute and out of the discharge end portion of the product chute, wherein the product pusher mechanism causes the pusher head and an associated actuation rod to reciprocally travel in the product chute; and a clipper mechanism disposed downstream of the product chute, the clipper mechanism configured to automatically apply at least one clip to a covering material that encloses the product from the product chute, wherein the system comprises a product transfer zone residing between the pusher mechanism in a retracted configuration and the product chute, the transfer zone being configured to serially introduce products having a shape, the transfer zone having a static interior space configuration that does not change the product shape, and wherein the product transfer zone comprises a floor and ceiling and upstanding side housing walls that remain closed as product travels automatically into the product transfer zone while the pusher head is in a retracted home position then travels automatically axially into and out of the product chute using the pusher head to thereby inhibit operator access to the product travel path during operation of the product pusher mechanism. 26. A system for automatically enclosing a semi-solid or solid product in a covering material, comprising: an elongate product chute having an outer surface and opposing receiving and discharge end portions with an interior cavity extending therethrough; a product pusher mechanism in communication with the product chute, the product pusher mechanism comprising an actuation cylinder and corresponding actuation rod, the actuation rod and pusher head having an axially in-line travel path during a machine stroke cycle, the product pusher mechanism configured to controllably automatically advance the pusher head and actuation rod into and retract from the product chute to thereby advance a product from a position upstream of the product chute, through the product chute and out of the discharge end portion of the product chute; a product loading zone disposed upstream of the travel path of the product pusher mechanism, the loading zone merging into a product transfer zone, the product transfer zone automatically positioning product in alignment with the product chute and the pusher mechanism when the pusher mechanism is in a retracted position; and a clipper mechanism disposed downstream of the product chute, the clipper mechanism configured to automatically apply at least one clip to a covering material that encloses the product from the product chute. 27. A system according to claim 26, further comprising at least one gathering plate operatively associated with the clipper mechanism disposed downstream of the product chute, and wherein a forwardmost portion of the pusher head resides outside the product chute proximate the at least one gathering plate during a forwardmost position of the pusher mechanism. 28. A system according to claim 27, wherein the pusher head passes downstream of the at least one gathering plate at the forwardmost position of the pusher mechanism. 29. A system according to claim 26, wherein the pusher mechanism comprises a pair of guide rods, a respective one attached to one of two opposing axially rearwardly extending sidewalls of the pusher head, the sidewalls disposed rearward of an article contacting surface of the pusher head. 30. A system according to claim 29, wherein the product pusher head is sized and configured to engage the product chute cavity, and wherein the guide rods and actuation rod reciprocally travel in, then retract out of the product chute during operation. 31. A system according to claim 26, further comprising a moving floor operatively associated with the product loading zone that automatically transports the products to the product transfer zone upstream of the product chute and downstream of the product pusher head in a retracted home position. 32. A system for automatically enclosing a semi-solid or solid product in a covering material, comprising: an elongate product chute having an outer surface and opposing receiving and discharge end portions with an interior cavity extending therethrough; a product pusher mechanism having a pusher head attached to an actuation rod that is attached to an actuation cylinder, wherein the rod, the cylinder and the pusher head are axially aligned, whereby the pusher head is configured to controllably automatically advance into and retract from the product chute to thereby advance a product from a position upstream of the product chute, through the product chute and out of the discharge end portion of the product chute; a clipper mechanism disposed downstream of the product chute, the clipper mechanism configured to automatically apply at least one clip to a covering material that encloses the product from the product chute; and at least one gathering plate operatively associated with the clipper mechanism disposed downstream of the product chute, and wherein a forwardmost portion of the pusher head extends outside the product chute downstream of the at least one gathering plate at the forwardmost position of the pusher head. 33. A system according to claim 32, further comprising elongate guide rods, at least one disposed on each side of the single actuation cylinder and attached to the pusher head to reciprocally travel with the actuation rod in and out of the product chute. 34. A system according to claim 33, wherein the pusher head has a continuous forward product contacting surface. 35. A system according to claim 33, wherein the pusher head includes a forward article contacting member and rearward axially extending guidewalls, and wherein at least one of the guide rods is attached to one of each of the rearwardly extending guidewalls.