摘要:
In an automated machine that forms a vertically positioned and horizontally traversing web of plastic film into bags, the apparatus opens, fills and closes the bags and provides slack in the bag walls to close the bag. The bag upper longitudinal edge portions are separated at a bag opening and closing assembly for thereby opening and filing a bag with material. While the bag is being filled, the bag is supported on a conveyor. The conveyor is raised vertically toward the opening and closing assembly while the bag is being closed for thereby providing slack in the bag walls. The conveyor horizontally conveys the filled bag under while a gripping and pulling assembly pulls the bag longitudinal portions into a heat sealing assembly whereat the bag walls are fused together and sealed closed. The bag is thereafter conveyed away therefrom and the conveyor is again placed in its lower position.
摘要:
In an automated machine that forms a vertically positioned and horizontally traversing web of plastic film into bags and fills the bags with material, the apparatus forms the bags sealed side edges as well as aligned perforations whereat the bags are severed from one another after they are filled with material. The web includes a pair of parallel proximate plastic film walls. A vertically positioned heat seal bar is moveable onto the web severing the walls along a separation line and forming the fore and aft sealed side edges of the bags. A perforation knife is aligned with and positioned vertically above the heat seal bar, and is simultaneously moveable onto the web walls with the heat seal bar thereby forming a vertical perforation line at a web longitudinal edge portion. The separation line and perforation line in the web are thereby aligned.
摘要:
An apparatus for forming elongate plastic film into a tube around variable size articles includes a conveyor and a forming collar positioned over the conveyor. The forming collar includes left and right sections pivotally supported on a common carrier and moveable relative to the conveyor. The carrier is also moveable relative to the conveyor. The plastic film tube is formed by directing the central film area onto the conveyor, the left film side onto the inside surface of the left collar section and the right film side onto the inside surface of the right collar section. Movement of the forming collar left and right sections about their pivotal supports and/or movement of the carrier cause the forming collar sections to move between retracted and expanded positions for thereby forming a variable size plastic tube corresponding to the article size being received therein.
摘要:
A packaging apparatus including a receptacle, a ram, a film dispensing assembly and first and second elongate members. The receptacle defines a central axis and has a dispensing end with first and second substantially linear and parallel opposed edges that define an axial limit of the dispensing end. The plastic film material forms a film tube about the receptacle. The first and second elongate members are substantially parallel with the first and second edges. In operation, the ram is extended to eject the batch of material through the dispensing end into the film tube. Retracting the ram forms a partial vacuum within the film tube between the batch of material and the ram. The first and second elongate members compressively engage the film tube between the batch of material and the dispensing end and thereby form folded flaps in the film tube. A method of packaging is also disclosed.
摘要:
In an automated machine that forms a vertically positioned and horizontally traversing web of plastic film into bags and fills the bags with material, after the bags are filled, a pair of gripping fingers clampingly grip and pull the bag upper longitudinal edge portions into a sealing gap between a pair of heat seal bars whereat the bag walls are heat fused together and the bag is sealed closed. A pair of clamp bars below the heat seal bars clampingly engage the bag walls after they are pulled into the gap and prior to heat sealing. The filled bags are linked along their longitudinal edge portions with perforations therebetween. The bags are severed from one another at a perforation when the gripping fingers pull the bag walls into the gap. The gripping fingers are carried on and are moved longitudinally with a pair of belts located vertically above the gap.
摘要:
In an automated machine that forms a vertically positioned and horizontally traversing web of plastic film into bags and fills the bags with material, the apparatus maintains tension in the plastic film web and supports and maintains the web horizontally aligned as it traverses through the machine. The apparatus includes upstream and downstream guide rollers. The upstream roller is mounted on an arm which is rotatably biased about a vertical axis and is thereby moveable. The upstream roller has an outer concave perimeter surface and the downstream roller has an outer convex perimeter surface. A longitudinal edge portion of the web extends horizontally from an upstream location, around the upstream roller, to and around the downstream roller and to a downstream location. The web extends vertically below the longitudinal edge portion. A rotational sensor coupled to the arm provides an output signal representative of the location of the arm.
摘要:
An apparatus for unfolding folded plastic film having a first side joined to a second side along a longitudinal folded edge for use in forming a packaging tube. The folded film travels through a slot and the folded sides are separated at their respective outer longitudinal edges. The longitudinal left side is conveyed toward and over a guide plate left side edge and then over a left form tube section. The longitudinal right side is conveyed toward and over a guide plate right side edge and then over a right form tube section. The longitudinal middle section including the longitudinal folded edge and part of both the first and second sides adjacent the longitudinal folded edge is conveyed toward and over guide plate angular edges and then onto a carrying surface.
摘要:
A joining apparatus and methods wherein, after plastic film is formed into a variable size tube for receiving therein and enveloping corresponding variable size large articles such as bales of cotton, trash, cloth, etc., the joining apparatus joins an overlap region of the plastic film tube for effectively sealing and creating the plastic film tube. The joining apparatus includes an inner shoe located inside the formed tube. The overlap region slides over the inside shoe as the tube is formed. An outside shoe is moveable between an idle position away from and an operative position adjacent to the inside shoe. When in its operative position, the overlap region is sandwiched between the outside and inside shoes and heated air is provided under pressure through a groove on the outside shoe and onto the overlap region for effectively heating and joining the overlapped plastic sheets.
摘要:
An apparatus for compressing a loose material that includes a compression chamber. Movement of a first ram discharges the loose material in a compressed state through an outlet port in the compression chamber. A packaging receptacle is positioned proximate the outlet port to receive the compressed material. The packaging receptacle is then moved to a second position where the movement of a second ram ejects the compressed material from the inner volume of the packaging receptacle. The second ram may be alternatively extended into and retracted from the packaging receptacle during ejection of the compressed material. The refilling of the compression chamber for the next cycle may begin prior to the retraction of the second ram from the packaging receptacle. A packaging jacket may be positioned about the packaging receptacle such that the ejection of the compressed material injects the compressed material into the packaging jacket.