PACKAGING MACHINE WITH HOSE DOWN CONSTRUCTION
A package wrapping machine includes a wrapping station where film is to be manipulated during a packaging operation. A support is provided for holding rolled film, the support located to permit film to be drawn into the wrapping station. A film grip assembly is used for gripping at least one edge of film during at least part of a wrapping operation. A plurality of sealed components are configured to inhibit infiltration of liquid into the components during a spray cleaning operation.
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This application claims priority to U.S. Provisional Patent Application No. 60/873,346, filed Dec. 7, 2006 and to U.S. Provisional Patent Application No. 60/912,496, filed Apr. 18, 2007, the details of both of which are hereby incorporated by reference in their entirety.
TECHNICAL FIELDThis application relates generally to packaging machines for placing film around products and more particularly to a packaging machine that can be cleaned through delivery of a pressurized liquid.
BACKGROUNDPackaging machines are frequently used to automatically wrap film about product, such as food items. The packaging machines often include a film gripper that grips and pulls the film from a roll of film and a folder that folds the film underneath the product. Various control systems and sensors may be employed, for example, to control operation of the gripper and to sense product location.
In circumstances where food product such as meat is being wrapped, it is necessary to clean the packaging machine. Because of the numerous electronics, control systems, mechanical components such as bearings, motors, etc., cleaning the packaging machine can be a somewhat delicate process.
SUMMARYIn an aspect, a package wrapping machine includes a wrapping station where film is to be manipulated during a packaging operation. A support is provided for holding rolled film, the support located to permit film to be drawn into the wrapping station. A film grip assembly is used for gripping at least one edge of film during at least part of a wrapping operation. A plurality of sealed components are configured to inhibit infiltration of liquid into the components during a spray cleaning operation.
In another aspect, a method of cleaning a package wrapping machine including a wrapping station where film is to be manipulated during a packaging operation, a support for holding rolled film, the support located to permit film to be drawn into the wrapping station and a film grip assembly for gripping at least one edge of film during at least part of a wrapping operation is provided. The method includes disconnecting power to the package wrapping machine. A protective cover is attached about at least an interface portion of the package wrapping machine. Pressurized liquid is delivered to the wrapping station of the package wrapping machine using a hose connected to a source of liquid. Infiltration of liquid is inhibited into multiple components of the package wrapping machine by providing components configured with sealing structures.
In another aspect, a package wrapping machine includes a wrapping station where film is to be manipulated during a packaging operation. A support for holding rolled film is provided. The support is located to permit film to be drawn into the wrapping station. A film grip assembly grips at least one edge of film during at least part of a wrapping operation. A weigher assembly includes a platform upon which a product sits. A load cell is operatively connected to the weigher assembly such that weight of the product applies a force to the load cell which is converted into a corresponding electrical signal by the load cell. The load cell is located within an enclosure formed between a cover and a base. A sealing member is located between the cover and the base to inhibit infiltration of liquid into the enclosure. An integrated wash and rinse system delivers liquid to the wrapping station during a washing operation.
The details of one or more embodiments are set forth in the accompanying drawings and the description below. Other features, objects, and advantages will be apparent from the description and drawings, and from the claims.
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A notch 76 is formed into the periphery of the grommet 62, the notch being sized to receive an opening forming edge 78 of the cable opening 64 (
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An operator connects a hose 142 to a water source to provide water to a nozzle 144 connected to the hose. In some embodiments, the hose is connected to a chemical delivery device 146, which is in turn connected to the nozzle 144 (or includes a nozzle). The chemical delivery device 146 may include a control 148 that allows the operator to control whether or not (and what type of) chemicals are delivered or whether water only is delivered. In this embodiment, the chemical delivery device 146 allows for operator selection of water only, soap and water and sanitizer and water.
Initially, the operator may select soap and water to be delivered using the nozzle 144 and chemical delivery device 146. Soap and water may be directed onto package wrapping machine 10 at the in-feed station 12, wrap station 16 and out-feed station 18 to clean, for example, food particles such as meat from the various components. A removable (or openable) canopy 152 and one or more openable doors 154 may be included to provide additional access to the wrap station 16 including elevator region 156 (see
Once soap and water are delivered satisfactorily, the control 148 may be changed so that water only is delivered to rinse the soap from the package wrapping machine 10. Typically, the operator will deliver rinse water to areas of the package wrapping machine 10 to which soap was delivered so that the various components are rinsed of soap. After the soap is rinsed, the operator may change the control 148 so that sanitizer and water are delivered to the package wrapping machine 10, particularly at the in-feed station 12, out-feed station 18 and wrap station 16. In some embodiments, the sanitizer is not rinsed from the package wrapping machine 10. The above-described hose down construction allows for improved cleaning and sanitization of the package wrapping machine while decreasing the effort involved to clean the machine 10.
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In some embodiments, the wash and rinse system 162 includes a chemical delivery device 168. The chemical delivery device 168 can deliver various chemicals (e.g., soap and/or sanitizer) to water flowing through the conduit 164. In one embodiment, the chemical delivery device 160 may be controlled automatically by a controller, for example, using a timer such that soap, sanitizer and/or rinse water are delivered for pre-selected periods of time. A staged wash process may be utilized where various timed cycles include pre-wash, wash, rinse and sanitization cycles, as examples. It may also be possible for an operator to control chemical delivery.
The wash and rinse system 162 may utilize a pump 170 for pressurizing the fluid. In some embodiments, the wash and rinse system 162 does not utilize a pump. For example, the wash and rinse system 162 may be capable of utilizing water line pressure by connecting the wash and rinse system to a hose spigot.
It is to be clearly understood that the above description is intended by way of illustration and example only and is not intended to be taken by way of limitation, and that changes and modifications are possible. For example, it may be undesirable to direct liquid onto certain areas of the package wrapping machine 10 such as within the film support region 160 where the rolls of film are housed (see
Claims
1. A package wrapping machine comprising:
- a wrapping station where film is to be manipulated during a packaging operation;
- a support for holding rolled film, the support located to permit film to be drawn into the wrapping station;
- a film grip assembly for gripping at least one edge of film during at least part of a wrapping operation; and
- a plurality of sealed components configured to inhibit infiltration of liquid into the components during a spray cleaning operation.
2. The package wrapping machine of claim 1, wherein one sealed component is a scale assembly comprising:
- a weigher assembly including a platform upon which a product sits;
- a load cell operatively connected to the weigher assembly such that weight of the product applies a force to the load cell which is converted into a corresponding electrical signal by the load cell;
- the load cell being located within an enclosure formed between a cover and a base; and
- a sealing member located between the cover and the base to inhibit infiltration of liquid into the enclosure.
3. The package wrapping machine of claim 2, wherein another sealed component is a control box comprising:
- a top, a bottom and sides connecting the top and the bottom wherein at least one of the top, bottom and sides has an array of openings through which cables pass; and
- gaskets positioned within the openings, the gaskets including a cable opening that receive the cables, the gaskets configured to inhibit infiltration of liquid into the control box.
4. The package wrapping machine of claim 3, wherein another sealed component is a motor comprising:
- a housing;
- an output shaft extending through an opening in the housing; and
- a sealing member located between the housing and the output shaft to inhibit infiltration of liquid into the housing.
5. The package wrapping machine of claim 2, wherein another sealed component is a camera assembly comprising:
- a housing;
- a camera mounted within the housing;
- a transparent plate through which the camera views a package; and
- a sealing member located between the housing and the transparent plate to inhibit infiltration of liquid between the housing and the transparent plate.
6. The package wrapping machine of claim 2 further comprising
- a printer that is used to print weight information determined using the load cell; and
- a liquid impermeable cover that covers the printer and inhibits passage of liquid therethrough.
7. The package wrapping machine of claim 1 further comprising a wash and rinse system integrated within the package wrapping machine.
8. The package wrapping machine of claim 7, wherein the wash and rinse system comprises a conduit that deliver liquid to a plurality of nozzles that are located to deliver sprays of liquid onto desired locations.
9. The package wrapping machine of claim 8, wherein at least one desired location is a location that comes into contact with a food product being wrapped.
10. A method of cleaning a package wrapping machine including a wrapping station where film is to be manipulated during a packaging operation, a support for holding rolled film, the support located to permit film to be drawn into the wrapping station and a film grip assembly for gripping at least one edge of film during at least part of a wrapping operation, the method comprising:
- disconnecting power to the package wrapping machine;
- attaching a protective cover about at least an interface portion of the package wrapping machine;
- delivering pressurized liquid to the wrapping station of the package wrapping machine using a conduit connected to a source of liquid; and
- inhibiting infiltration of liquid into multiple components of the package wrapping machine by providing components configured with sealing structures.
11. The method of claim 10, wherein the step of delivering pressurized liquid includes delivering the pressurized liquid to the wrapping station using the conduit where the conduit is located within the package wrapping machine.
12. The method of claim 10 further comprising attaching the protective cover about a printer of the package wrapping machine.
13. The method of claim 10, wherein providing components with sealing structures includes providing a scale assembly comprising
- a weigher assembly including a platform upon which a product sits;
- a load cell operatively connected to the weigher assembly such that weight of the product applies a force to the load cell which is converted into a corresponding electrical signal by the load cell;
- the load cell being located within an enclosure formed between a cover and a base; and
- a sealing member located between the cover and the base to inhibit infiltration of liquid into the enclosure.
14. The method of claim 13, wherein providing components with sealing structures includes providing a control box comprising
- a top, a bottom and sides connecting the top and the bottom wherein at least one of the top, bottom and sides has an array of openings through which cables pass; and
- gaskets positioned within the openings, the gaskets including a cable opening that receive the cables, the gaskets configured to inhibit infiltration of liquid into the control box.
15. The method of claim 14, wherein providing components with sealing structures includes providing a motor comprising
- a housing;
- an output shaft extending through an opening in the housing; and
- a sealing member located between the housing and the output shaft to inhibit infiltration of liquid into the housing.
16. The method of claim 14, wherein providing components with sealing structures includes providing a camera assembly comprising
- a housing;
- a camera mounted within the housing;
- a transparent plate through which the camera views a package; and
- a sealing member located between the housing and the transparent plate to inhibit infiltration of liquid between the housing and the transparent plate.
17. A package wrapping machine comprising:
- a wrapping station where film is to be manipulated during a packaging operation;
- a support for holding rolled film, the support located to permit film to be drawn into the wrapping station;
- a film grip assembly for gripping at least one edge of film during at least part of a wrapping operation;
- a weigher assembly including a platform upon which a product sits;
- a load cell operatively connected to the weigher assembly such that weight of the product applies a force to the load cell which is converted into a corresponding electrical signal by the load cell;
- the load cell being located within an enclosure formed between a cover and a base;
- a sealing member located between the cover and the base to inhibit infiltration of liquid into the enclosure; and
- an integrated wash and rinse system delivers liquid to the wrapping station during a washing operation.
18. The package wrapping machine of claim 17 further comprising
- a housing;
- a camera mounted within the housing;
- a transparent plate through which the camera views a package; and
- a sealing member located between the housing and the transparent plate to inhibit infiltration of liquid between the housing and the transparent plate.
19. The package wrapping machine of claim 17 further comprising
- a printer that is used to print weight information determined using the load cell; and
- a liquid impermeable cover that covers the printer and inhibits passage of liquid therethrough.
20. The package wrapping machine of claim 17, wherein the wash and rinse system comprises a conduit that delivers liquid to a nozzle that is located to deliver a spray of liquid toward the wrapping station.
Type: Application
Filed: Oct 31, 2007
Publication Date: Jun 12, 2008
Applicant: Premark FEG L.L.C. (Wilmington, DE)
Inventors: Carla A. Monnier (Vandalia, OH), Michael A. Whitby (West Milton, OH), Thomas P. Jones (Wilmington, OH), Lee E. Trouteaud (Tipp City, OH)
Application Number: 11/931,482
International Classification: B65B 11/00 (20060101); B65B 65/00 (20060101);