Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B7/00—Closing containers or receptacles after filling
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
  • B65B1/30—Devices or methods for controlling or determining the quantity or quality or the material fed or filled
  • B65B1/36—Devices or methods for controlling or determining the quantity or quality or the material fed or filled by volumetric devices or methods

Definitions

• This invention relates generally to packaging machinery operable on horizontally fed web material to form, fill and seal individual pouches, each containing a free-flowing granular or powdery product. More particularly, the invention relates to means associated with the filler mechanism whereby the product is deposited or laid down on the web material at precisely defined areas thereof and in a predetermined configuration so as to minimize the amount of web material required for packaging a given amount of product.
• the web material When the web material is of a width to accommodate the formation of several pouches simultaneously in several respective lanes, the web material will be sealed together between adjacent pouches in both a longitudinal direction and a transverse direction so as to result in pouches having a rectangular configuration.
• means are provided for not only shaping the free-flowing granular product into a preferred configuration, but also for precisely locating the shaped deposit on the web surface such that maximum utilization is made of the amount of web material allotted to each pouch.
• the mechanism by which this is accomplished is contained in an assembly which is mounted for a slight amount of vertical movement above the horizontally fed lower web.
• the assembly includes a plate formed with apertures each of which, when the plate is lowered into contact with the web during the dwell portion of the web feed cycle, serves as a cavity or mold for shaping each deposit of product to be contained in a pouch.
• a fill-block formed with a product chamber associated with each cavity, each said fill-block product chamber being in communication with the filler mechanism for receiving therefrom measured amounts of product to be contained within the respective pouch.
• Said fill-block receives the product from the filler when the block is in a sealed off position with each chamber out of communication with its respective mold cavity.
• the fill-block is actuated and slid to its discharge position to place each chamber thereof in communication with its respective cavity and in so doing acts to spread the granular product evenly and uniformly over the entire area of the cavity. In this manner the deposit of material is given a flat top surface with the entire deposit being substantially the same depth over the entire product receiving area of the web.
• the use of a cavity plate for defining and determining the configuration of the product also has the effect of minimizing the possibility of some of the granular product flowing into the sealing areas of the web material.
• Fig. 1 is a side elevational view of a horizontal pouch forming machine illustrating the product lay down assembly of the instant invention in relation thereto.
• Fig. 2 is a partial plan view in larger scale of the product lay down assembly shown in Fig.1.
• Fig. 3 is a view in side elevation of the product lay down assembly, including its driving linkage, in one operative position thereof.
• Fig. 4 is a sectional view of the product lay down assembly in another operational view thereof taken along the line 4-4 of Fig. 2.
• Fig. 5. is a view along the same section as Fig. 4 but showing the parts in still another operational position thereof.
• Fig. 6 is a perspective view of a portion of the web material after leaving the lay down assembly with shaped deposits of granular material placed thereon. Best Mode for Carrying Out the Invention With reference now in particular to Fig.
• the mechanism includes a movable frame comprised of a horizontally disposed bed plate (5) connected to support bars (6).
• the support bars (6) of which there is one on each side of the machine, one shown, are each pivotally joined to the upper ends of a series of vertical links (7) which links at their lower extremities are pivotally connected to bars (8), one shown, which comprise a part of the main frame of the machine.
• the movable frame including bed plate (5) is mounted for oscillatory movement, back and forth, in a generally horizontal plane with the movable framework being oscillated by a continuously rotating main drive shaft (10) suitably journaled in the main frame of the machine and carrying a crank arm (11) pivotally attached to one end of a pitman (12).
• the other end of the pitman is pivotally attached to a depending bracket (13) secured to a part of the movable frame so that, as can be seen, for each revolution of the shaft (10) the movable frame and all parts attached thereto or mounted thereon will undergo one complete oscillation which, for purposes of this description, will be considered one web feed cycle.
• a first or bottom web (15) supplied from a spool (16) suitably mounted by any conventional means near one end of the machine is guided around a roll (17) and drawn across the upper surface of the bed plate (5) and beneath the product lay down assembly (20) to be hereinafter more fully described.
• the lower web (15) carrying deposits of the product is overlaid with a second or top web (21) which is drawn from a spool (22) suitably supported above the apparatus and drawn around a guide roll (23). Both webs then proceed through a web sealing station, not shown, whereat the two webs are sealed together along their sealing areas to subdivide the webs into individual sealed pouches for each deposit of product.
• the webs then proceed eventually to feed rolls (25) mounted on the movable framework and from whence the individual sealed pouches may be separated from the web for further handling and processing.
• the extent of web movement during this forward motion of the movable framework is the length of one pouch.
• the feed rollers While being carried rearwardly with the movable frame are, however, activated so as to continue the forward advance of the webs relative to the main fixed frame of the machine a distance corresponding to the length of one pouch.
• the webs are advanced a distance equal to the length of two pouches.
• the webs advance the length of one pouch relative to the main machine frame since the feed rolls are, in that half cycle, inactive and there is no movement of the webs relative to the movable oscillating framework.
• the activated feed rolls (25) continue advancing the webs relative to the main framework the length of one pouch during which time the webs are advanced relative to the then rearwardly moving framework and all mechanisms mounted thereon a distance equivalent to the length of two pouches. Since the feed rolls (25) are inactive in the half cycle first described, so that there is no motion of the web relative to the movable frame, even though the web is advancing relative to the main fixed frame, said first described half cycle will be hereinafter referred to as the dwell portion of the web feeding cycle.
• the product to be packaged which may be a free-flowing granular material (30) is delivered to the lay down assembly (20) from a filler mechanism (26) to which it is connected by a plurality of flexible tubes or hoses (27), the filler in turn being supplied from a hopper (28).
• the filler may be of any conventional type capable of releasing measured amounts of product upon signal each web feeding cycle. Since in the present instance the type of web feeding mechanism disclosed operates to feed the web two pouch lengths each web feeding cycle, the filler is designed to release for each lane of the web material two separate charges of the product simultaneously for deposit on two successive product receiving areas in each lane of the web material.
• the lay down assembly (20) which receives the product from the filler each web feeding cycle can be seen in greater detail in Figs.
• This assembly comprises an open rectangular frame (31) overlying the bedplate (5) and provided near each corner thereof with a bearing block (32) slidably fitted on a upright guide rod or post (33) secured to the bedplate (5) thus allowing the frame and the entire assembly a limited amount of vertical movement towards and away from the bedplate (5).
• a horizontally disposed cavity plate (35) Suspended from the frame member (31) by means of angled support bars (34) is a horizontally disposed cavity plate (35) having formed therein apertures (36).
• the apertures are generally rectangular in horizontal cross-section with inwardly tapering side walls so as to have slightly greater dimensions at the bottom surface of the plate than at the top surface.
• the bottom surface of the cavity plate (35) is flat except in the areas bordering the apertures (36) which are somewhat raised in order to provide a better contact surface when the plate is lowered into engagement with the web (15) as will be hereinafter more fully described.
• the upper surface of the cavity plate (35) is smooth and flat and supports for shifting movement relative there to a slidable fill block (41) formed with product fill chambers (42) therein, there being one fill chamber associated with each of the apertures in the cavity plate (35).
• the chambers (42) are also generally rectangular in horizontal cross-section and have a lateral dimension substantially equal to that of the associated apertures (36).
• the top surface of the fill block (41) is also formed with an opening communicating with each fill chamber (42) and fitted with a coupling tube (43) to which is attached one of the flexible tubes (27) extending from the filler as herein before described, thus placing the fill chambers in communication with the filler mechanism for receiving product to be packaged each web feeding cycle of the apparatus.
• the fill block (41) is housed within a coverplate (45) the side edges of which extend downwardly to encompass the sides of the fill block in a snug slide fitting relationship to permit a slight amount of vertical movement of the fill block within the housing provided by the coverplate.
• the cover plate (45) is provided with a pair of bearing blocks (47) carrying bearings slide fitted to a shaft (48) supported at each end thereof in brackets (49) secured to the frame (31) of the overall assembly.
• a shroud (51) for shaft (48) may be provided between the blocks (47) to help maintain that portion of the shaft free of dirt or other foreign matter.
• Fig. 5 illustrates the position of the fill block when shifted or slid to its product discharge position wherein the product chambers are moved into overlying relation to and in registration with the respective apertures in the cavity plate. The product is thus discharged into an aperture which in combination with the underlying web defines a mold or cavity for shaping the product into the configuration of the cavity.
• the fill block when sliding to and from its product discharge position spreads the granular product over the entire area of the respective cavity so as to leave the molded deposit of granular material with a flat top surface. It will, of course, be understood that the volume of each cavity is matched to the volume of product to be deposited in each filling operation so that each cavity will be completely filled without voids and with a top surface substantially level with the top surface of the cavity plate after the fill block returns to its original sealed off position.
• Sliding movement is imparted to the fill block (41) through means which includes a link (52) pivotly connected at one end to a bracket (53) secured to the fill block cover plate (45).
• the other end thereof is pivotally joined to a shaft (54) extending across the machine and supported at each end in one arm of a bellcrank (56) carried by a rock shaft (55) formated in bearing blocks (57) suitably secured to the underside of the bedplate (5).
• the other arm of bell crank (56) is joined to a vertical connecting rod (58) which is attached at its lower end to one arm of a bell crank (61) carried by a shaft (62) suitably journaled in a pillow block (63) secured to the main frame of the machine.
• the other arm of the bell crank (61) is joined by a connecting rod (64) to the output element (65) of a positive action cam unit (66) which is driven from main shaft 10 and operates at appropriate times at the web feed cycle through the linkage just described to slide the fill block between its respective sealed off and discharge positions.
• Means are also provided for raising and lowering the entire lay down assembly at appropriate times in the web feeding cycle so as to bring the cavity plate (35) down into contact with the web (5) to receive a shaped deposit of product thereon during the dwell portion of the web feeding cycle and thereafter to raise the entire assembly, so as to lift the cavity plate above and clear of the product just deposited on the web during the remaining portion of the web feeding cycle wherein the web is advanced and fed relative to the cavity plate and entire lay down assembly by activation of the feed rolls (25) as heretofore explained.
• the means for lifting and lowering the lay down assembly includes a connecting rod (71) pivotly joined at its upper end to a bearing stud (72) secured to the frame (31) of the lay down assembly, it being understood that there is one such rod and stud on each side of the assembly.
• the lower end of each rod (71) is connected to a rock arm (73) carried by a rock shaft (74) mounted in pillow blocks (75) secured to the main frame of the machine.
• Shaft (74) also carries an upright rock arm (76) which is joined by a connecting rod (77) to the output element (78) of a positive action cam unit (79) which operates during appropriate times in the web feeding cycle to raise and lower the lay down assembly shown in Fig.
• the cam unit (79) is such as to maintain the cavity plate (35) lowered in engagement with the web (15) during substantially the entire half cycle dwell portion of the web feeding cycle.
• the cam unit (66) is effective for actuating the associated linkage to slide the fill block (41) and the product chambers (42) therein from their sealed off position to their product discharge position and then back again to the sealed off position before the end of the dwell portion of the web feeding cycle.
• the cam unit (79) is effective through the related linkage for lifting the lay down assembly a sufficient distance and in sufficient time so that the cavity plate (35) is clear of the now moving shaped deposits of product (30) placed on the web in the preceeding half cycle of web feed.
• the fill block (41) is maintained in its sealed off position and the filler mechanism (26) is activated so as to deliver a measured amount of product to each of the fill chambers of the fill block for deposit on the next succeeding product receiving areas of the web during the next dwell portion of the web feeding cycle.
• Fig. 3 illustrates the various parts and the positions they assume at the start of a web feeding cycle of which the first half is the non-dwell portion and the second half is the dwell portion.
• the movable framework including the bedplate (5) and the entire lay down assembly (20) mounted thereon have been advanced, from left to right, to the limit of its oscillatory movement by the crank arm (11) carried by driveshaft (10).
• the extent of the advance movement of the entire assembly is equal to the longitudinal length of one pouch to be fabricated by the mechanism.
• the lay down assembly lift mechanism has just started to operate to raise the cavity plate (35) off the web (15).
• the fill block (41) is in its sealed off position with the product chambers (42) devoid of any product, the product having been deposited on the web and in the product shaping cavities by actuation of the fill block during the dwell portion of the previous web feed cycle.
• the entire lay down assembly is lifted quickly to raise the cavity plate (35) to a position clear of the product deposited on the web in the preceeding web feed cycle.
• the entire lay down assembly moves rearwardly from right to left while the web continues to advance from left to right by feed rolls (25) which during this portion of the cycle are activated.
• the filler mechanism (26) is activated to dispense measured amounts of the product to each of the product chambers (42) in the fill block (41).
• Fig. 4 illustrates the position of the assembly parts at a point approximately midway through the non-dwell portion on first half of the web feeding cycle.
• the fill block is maintained in its sealed off position and the product chambers (42) therein have received another charge of the granular product (30) from the filler.
• the web (15) has advanced a distance of approximately one pouch length relative to the rearwardly moving lay down assembly.
• the assembly starts to lower again so that the cavity plate (35) will contact the web shortly after the start of the dwell portion of the cycle and after the feed rolls (25) have been deactivated.
• the web will have been advanced relative to the lay down assembly a distance equivalent to the length of two pouches so that when the lay down assembly again contacts the web the apertures (36) in the cavity plate (35) will be in register with the next succeeding two product receiving areas in each lane of the web.
• the fill block (41) is activated and shifted from its sealed off position to and then from its product discharge position, the position shown in Fig. 5, to thereby deposit a measured amount of product into each cavity defined in part by the cavity plate.
• the product is spread over the entire area of the cavity so that each deposit of the granular material is confined to a pre-determined surface area of the web and in a form or configuration essentially flat and of uniform depth so as to enable efficient packaging thereof with a minimum amount of packaging material.
• the fill block returns to its sealed off position before the end of the dwell portion of the web feeding cycle (see Fig.
• FIG. 6 illustrates a section of the lower web (15) after it leaves the lay down assembly showing the arrangement of the individual deposits of granular material (30) thereon before they are covered by the upper web (21) preparatory to being sealed within a pouch structure.
• the several deposits are arranged in precisely aligned longitudinal lanes and laterally extending rows thereby creating precisely defined sealing areas of the web material running between the several lanes and the several rows.
• Each deposit is in the general shape of a flattened pile having a generally rectangular base of slightly greater dimensions than its rectangular top thereby creating inwardly tapering sides.
• each deposit is one which makes maximum utilization of the interior area of the resultant pouch thereby minimizing the amount of web material required to package a given amount of product.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Quality & Reliability (AREA)
• Containers And Plastic Fillers For Packaging (AREA)
• Seasonings (AREA)
• Making Paper Articles (AREA)
• Control And Other Processes For Unpacking Of Materials (AREA)
• Permanent Magnet Type Synchronous Machine (AREA)

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Publications (1)

Family

ID=22377413

Family Applications (1)

Country Status (21)

Families Citing this family (2)

Citations (5)

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• 1980
  • 1980-02-04 US US06/118,246 patent/US4359072A/en not_active Expired - Lifetime
• 1981
  • 1981-01-16 CA CA000368693A patent/CA1153683A/en not_active Expired
  • 1981-01-21 AU AU67756/81A patent/AU537835B2/en not_active Ceased
  • 1981-01-21 DE DE8181900477T patent/DE3170084D1/de not_active Expired
  • 1981-01-21 WO PCT/US1981/000110 patent/WO1981002281A1/en active IP Right Grant
  • 1981-01-21 EP EP81900477A patent/EP0044859B1/en not_active Expired
  • 1981-01-21 BR BR8106439A patent/BR8106439A/pt not_active IP Right Cessation
  • 1981-01-21 AT AT81900477T patent/ATE12919T1/de not_active IP Right Cessation
  • 1981-01-21 JP JP56500743A patent/JPH0255284B2/ja not_active Expired - Lifetime
  • 1981-01-23 IL IL61964A patent/IL61964A/xx unknown
  • 1981-01-30 AR AR284148A patent/AR226448A1/es active
  • 1981-01-30 MX MX185797A patent/MX154428A/es unknown
  • 1981-02-03 PH PH25178A patent/PH17199A/en unknown
  • 1981-02-03 ES ES499055A patent/ES499055A0/es active Granted
  • 1981-02-03 IE IE201/81A patent/IE50561B1/en unknown
  • 1981-02-04 BE BE0/203699A patent/BE887386A/fr not_active IP Right Cessation
  • 1981-02-04 KR KR1019810000350A patent/KR850001171B1/ko active IP Right Grant
  • 1981-02-04 IT IT47721/81A patent/IT1170691B/it active
  • 1981-09-16 KR KR1019810003453A patent/KR890002200B1/ko active
  • 1981-09-23 FI FI812959A patent/FI63361C/fi not_active IP Right Cessation
  • 1981-09-29 NO NO813300A patent/NO153328C/no unknown
  • 1981-10-02 DK DK437181A patent/DK154059C/da not_active IP Right Cessation

Patent Citations (5)

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