This invention concerns a method and apparatus for packing horizontally stacked products in multiple parallel rows in a shipping tray. This method and apparatus is particularly useful to the packaging of sliced fruits and vegetables while practicing gentle care so as to reduce the bruising and loss of juice and texture of the sliced products and reducing the likelihood of misalignment of the products in the shipping tray.
When sliced food items, such as sliced tomatoes and sliced onions, are to be used at a restaurant or other food service institution, a substantial amount of preparation time would be required at the restaurant to cut and otherwise prepare the sliced products. Whole food products that are purchased and delivered to the restaurant would have to be cleaned, sliced and made available for placement on salads, sandwiches, or other menu items. It is difficult for the person slicing the food items to prepare slices of uniform width and consistency, and there is a substantial amount of waste because of improper slicing and handling the products.
The owners and managers of a restaurant chain usually desire to present a uniform food product, such as hamburgers of uniform size, appearance and taste, with tomatoes and/or onions applied to the hamburger, with the hamburgers and all of its ingredients being substantially in identical form one restaurant to the other. It is important that tomatoes and onions, in particular, be sliced to a desired thickness when placed on sandwiches, salads, etc. of a restaurant chain. This provides the customer with confidence that the food products will be uniform from one restaurant to the other within the chain of restaurants. Accordingly, restaurant managers prefer to receive food items properly prepared and in proper condition for placement on a sandwich, salad, etc. for immediate service to the customer without preparation steps such as slicing the food products.
Further, the operators of large restaurants prefer to receive tomatoes in a sliced form in a shipping tray that not only supports the tomatoes during storage, delivery, refrigeration, and service, but also in a shipping tray that expedites convenient retrieval of the sliced food product from the shipping tray.
Article slicing methods and machines are disclosed in U.S. Pat. No. 7,861,629, and in Patent Publication No. US-2006/0021484 A1, published Feb. 2, 2006. These publications disclose slicing multiple products, such as tomatoes, simultaneously so that the tomatoes are delivered with their end heels removed and with the central portion of each tomato formed in multiple slices. The multiple slices are gathered or “racked” into a single length of multiple sliced tomatoes and then the tomatoes are deposited in an awaiting shipping tray. Therefore, the prior art shows the concept of delivering multiple tomatoes in sliced form to a delivery mechanism that deposits the tomatoes in a shipping tray. Accordingly, applicant adopts herein, in their entireties, Publication No. US-2006/0021484 A1 and U.S. Pat. No. 7,861,629. There are other article slicers apparently capable of cutting products into slices and gathering the slices of several products together for delivery to a single package.
It is desirable to have the slicing process function rapidly, uniformly, efficiently, and with enough gentle care to not damage the food products, and with the ability to deliver the food products in a handy, attractive condition. For example, it is desirable that tomatoes be sliced and packaged with such gentle care that the juices of the tomato are substantially maintained in the tomato slices, not exuded from the tomato, and that the circular shape of the perimeter of the tomato be maintained without bruising or other damage.
With regard to sliced tomatoes, sliced onions, and other fragile sliced food products that are cut on automated slicers, the most common shipping container for these food products for packing, delivery, and retrieval of the products are shipping trays that accommodate single or double rows of products. The shipping trays are open top trays with opposed side walls spaced apart from one another a distance that is approximately the same as the breadth of one or two breadths of the products to be retrieved and shipped in the shipping tray. The shipping tray has an upper rim that is higher than the height of the contents of the shipping tray so that a protective transparent sheet may be adhesively applied to the rim, thereby closing the shipping tray about the sliced food products.
For three row shipping trays, sliced food products must be loaded by hand in order to properly place the maximum number of the sliced products in the trays. However, there have been efforts to automatically load and ship sliced food products in three row shipping trays that would have three internal spaces, each of which would accommodate a single row of the sliced food products.
For example,
Non-absorbent shipping trays sized for shipping three rows of sliced products, such as sliced onions, may have a substantially flat bottom surface with parallel ribs. The ribs may be shallow, as shown in
It is desirable to stack the products on their edges in the shipping trays with enough lateral support that they do not become separated or tilted from a vertical attitude. This maximizes the number of slices that can be placed in the shipping tray and tends to avoid the loss of juices from the work product, such as the juices from the slices of tomatoes. This is accomplished by placing enough slices in each row of the shipping tray so that the endmost slices engaged the end walls of the shipping tray and the end walls support the slices in an upstanding attitude.
While the configuration of the three-row shipping tray of
Another likely result is that the endmost slices likely will not enter the shipping tray. The non-entry of the endmost slices into the shipping tray presents a problem in that the packing process must be interrupted and the equipment cleaned up in order to continue the packing process.
A solution to this problem is to place shorter stacks of products in the shipping trays so that the products do not engage the rim 11 at the rounded corners 17-20. However, by using this method to overcome the problem, fewer slices are received in the shipping tray and the products typically will be more loosely maintained within the shipping tray and not as likely to maintain the desirable upright positions in the shipping tray. If additional products are to be hand-loaded at the corners of the shipping tray to fill the tray, additional labor costs would be required.
Generally, this disclosure concerns an improved process and apparatus for packing multiple rows of horizontally stacked sliced products in shipping trays.
An embodiment of the process is to move a shipping tray horizontally to a position beneath an article slicer machine of the type described above, and elevate the shipping tray to reduce the vertical drop of the articles received from the slicer machine to the shipping tray. A first horizontal row of the sliced products is moved downwardly from the article slicer machine and is received in the center portion of the shipping tray. The first row of products is moved laterally from the center portion of the shipping tray toward engagement with the first sidewall of the shipping tray. A second horizontal row of the sliced products is moved downwardly from the slicer machine and is received in the center portion of the shipping tray, adjacent and parallel to the first row of the products. The second row of products is moved from the center portion of the shipping tray away from the first stack of products and toward engagement with the second side wall of the shipping tray, forming an empty space in the center portion of the shipping tray. A third row of the sliced products is moved downwardly from the slicer machine and is received into the center portion of the shipping tray parallel to the first and second rows of the sliced products. This completes the loading of three rows of sliced products in the shipping tray.
A film of transparent material may be applied to the rim of the shipping tray to close the shipping tray about the multiple rows of the sliced products.
All three of the rows of sliced products initially enter the center portion of the shipping tray, so that there is no likelihood of any of the rows of the sliced products engaging the rim 11 at the corners 17-20 of the shipping tray. This reduces the problem of interference by the rim at the rounded corners of the endmost slices entering the shipping tray.
Since the first two rows of sliced products enter the shipping tray at the center portion of the shipping tray and then move toward a side wall, the end most slices of the rows of products follow the curvature of the rounded corners as they move to the side of the shipping tray, so that there is little resistance to the movement of the ends of the rows of sliced products.
Another embodiment of the process includes packing three rows of products in adjacent, parallel rows in a rectangular shipping tray. Placing a first row of products on the bottom wall in the center portion of the shipping tray and parallel to the sidewalls of the shipping tray, moving the first row of the products from the center portion of the shipping tray toward engagement with the first sidewall of the shipping tray, placing a second row of the products on the bottom wall in the center portion of the shipping tray and parallel to the first row of the products, moving the second row of the products from the center portion of the shipping tray across the bottom wall away from the first row of the products and toward engagement with the second sidewall of the shipping tray opposite to the first sidewall of the shipping tray, and placing a third row of the products in the center of the shipping tray parallel to and between the first and second rows of the products.
The products may be selected from the group including but not limited to sliced tomatoes, sliced onions, sliced cucumbers, and other sliced fruits and vegetables.
Another embodiment would be packing three or more rows of sliced products in a shipping tray by placing the rows of the products in the shipping trays in the center portion of the shipping tray and moving guiding gates across the shipping tray to engage and move the rows of products to the sides of the shipping tray. The guiding gates also hold the products in place at the sides of the shipping tray so there is space for the third row of products in the center of the tray. The guiding gates may also become tilted against the first and second rows of products to form a V-shape for receiving the third row of products.
Guiding gates may be used to move the rows of sliced products from the center portion of the shipping trays to the sides of the shipping trays. A shipping tray elevator may be used to lift the shipping trays into registration with the guiding gates, and when the products are deposited in the center portion of the shipping trays the guiding gates are moved from side to side to push the rows of the products from the center portion to the sides to the shipping tray. This may be accomplished without having to move the shipping tray from side to side.
This disclosure is directed to an improvement in the packing process and apparatus for receiving sliced and gathered products in horizontally stacked arrangement in a multiple chamber shipping tray while reducing the problem of loss space in the shipping tray due to rounded corners of the shipping tray and reducing the miss-delivery of the endmost article slices due to insertion of those slices in the portions of the shipping trays having rounded corners.
Referring now in more detail to the drawings in which like numerals indicate like parts throughout the several views,
As shown in
Once the tomato slices have been gathered as shown in
As shown in
As shown in
As shown in
As shown in
The first row 71 of sliced products is deposited in the center portion 74 of the shipping tray 10 and is received as shown in
The pair of guiding gates 50 is positioned to the left of the center portion 74 of the shipping tray when the first row of sliced products is received in the tray.
Before the delivery of the second row of sliced products, the pair of guiding gates 50 move from the left toward the right from the position shown in
As shown in
Gate frame 53, 54, function as means for tilting the first and second guiding gates in response to engaging the products with the guiding gates.
The third row 73 of sliced products is then deposited in the shipping tray 10, as shown in
The V-shape formed by the guiding gates 51 and 52 (
Once the configuration of three rows of sliced products has been achieved as shown in
It should be noted that all of the rows 71, 72 and 73 of the sliced products are first deposited in the center portion 74 of the shipping tray 10, away from the rounded corners 17-20. Therefore, the endmost products of all three rows are received at the widest dimension of the shipping tray, and the endmost products are not likely to be obstructed by the perimeter rim 11 of the shipping tray as they move downwardly into the tray.
Once the first and second rows of products have been deposited in the shipping tray and begin to move toward a side wall, the endmost products of these rows generally follow the curvature of the rounded corners 17-20 of the side walls of the shipping tray as they approach the rounded corners of the shipping tray. This procedure avoids the hazard of the endmost products in each row being obstructed by the perimeter rim 11 at the rounded corners 17-20.
While this disclosure describes the movement of the rows of products into “rounded corners” of shipping trays, it will be understood that this term is to include other shapes of non-right angle corners, such as but not limited to angled corners and other non-linear corners of the tray. Further, the process disclosed herein may be used for packing trays with rectangular corners.
Although a preferred embodiment of the invention has been disclosed in detail herein, it will be obvious to those skilled in the art that variations and modifications of the disclosed embodiment can be made without departing from the spirit and scope of the invention as set forth in the following claims.
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| Number | Date | Country | |
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