This disclosure relates generally to a machine for forming a container, and more specifically, to a machine for forming a container including a lid and a tray from a blank.
Containers and boxes that include a lid and a tray, such as pizza boxes and cake boxes, are formed from complex blanks that include many side panels that need to be folded. These containers are typically formed manually, because the many different panels make folding the containers automatically (e.g., using a machine) difficult. Therefore, there is a need for a machine that can form a container including a lid and a tray from a blank.
In one aspect, a machine for forming a container from a blank is provided. The container includes a tray and a lid. The machine has an upstream end where the blank is loaded and a downstream end where the formed container is discharged. The machine includes a frame, a deck coupled to the frame, wherein the blank is positioned on the deck, and a pre-forming section. The pre-forming section includes a plurality of stations through which the blank is advanced in a container-forming direction. The plurality of stations include a first station configured to partially form the lid and the tray, and at least a second station downstream from the first station and configured to further form the tray by partially folding a front panel assembly of the blank, the front panel assembly including a front panel and a roll-over panel. The pre-forming section also includes a bar extending above the deck in the container-forming direction across at least the first second stations, wherein a space defined between the bar and the deck is less than or equal to a height of the front panel assembly. The machine also includes a mandrel assembly mounted to the frame and configured to engage a bottom panel of the tray to form each of a plurality of corners of the tray and fold the roll-over panel to form a front wall of the container.
In another aspect, a method of forming a container from a blank using a machine is provided. The container includes a tray and a lid, and the machine includes a deck mounted to a frame, a pre-form section positioned upstream from a mandrel assembly, the pre-form section including a plurality of stations and a bar extending above the deck in a container-forming direction across at least the first second stations, the mandrel assembly including a mandrel that includes a plate and compression members coupled to each corner of the plate. The method includes receiving the blank at a first station of the plurality of stations, partially forming the container at the first station by folding each of a plurality of side panels of the blank, and transferring the blank in a container-forming direction to at least a second station of the plurality of stations, while maintaining justification of the partially formed container using the bar. The method also includes further forming the container using at least a second station of the plurality of stations, by folding a front panel assembly including a front panel and a roll-over panel of the blank, transferring the partially formed container from the pre-forming section to the mandrel assembly, actuating at least a first actuator associated with the mandrel to fold the roll-over panel to form a front wall of the container, actuating at least a second actuator associated with the compression members of the mandrel to form corners of the tray, and folding the lid to contact the tray.
In a further aspect, a machine for forming a container from a blank including a tray and a lid is provided. The machine has an upstream end where the blank is loaded and a downstream end where the container is discharged and includes a frame, a pre-forming assembly, and a mandrel assembly. The pre-forming assembly is configured to partially form the lid and the tray by folding each of a plurality of side panels of the blank and further form the tray by partially folding a front panel assembly of the blank, the front panel assembly including a front panel and a roll-over panel. The mandrel assembly is mounted to the frame and configured to engage a bottom panel of the tray to form each of a plurality of corners of the tray and fold the roll-over panel to form a front wall of the container.
In another aspect, a method of forming a container from a blank using a machine is provided. The container includes a tray and a lid, and the machine includes a pre-form assembly positioned upstream from a mandrel assembly. The mandrel assembly includes a mandrel that includes a plate and compression members coupled to each corner of the plate. The method includes partially forming the container using the pre-form assembly, by folding each of a plurality of side panels of the blank and partially folding a front panel assembly including a front panel and a roll-over panel of the blank. The method also includes transferring the partially formed container from the pre-forming assembly to the mandrel assembly, actuating at least a first actuator associated with the mandrel to fold the roll-over panel to form a front wall of the container, and actuating at least a second actuator associated with the compression members of the mandrel to form corners of the tray. The method further includes folding the lid to contact the tray.
The machine described herein for forming a container from a blank overcomes the limitations of known machines for forming containers. The machine described herein includes a pre-forming assembly and a mandrel assembly.
Further, blank 10 extends laterally or horizontally from a leading edge 16 to an opposing trailing edge 18 and extends longitudinally from a first end 17 to a second end 19. Blank 10 includes a top panel 20, a back panel 22, a bottom panel 24, and a front panel assembly 26 coupled together along preformed, generally parallel, fold lines 28, 30, and 32, respectively. More specifically, back panel 22 extends from top panel 20 along fold line 28, bottom panel 24 extends from back panel 22 along fold line 30, and front panel assembly 26 extends from bottom panel 24 along fold line 32. Fold line 32 defines a front edge of bottom panel 24, and fold line 30 defines a back edge of bottom panel 24. Fold line 28 defines a back edge of top panel 20 and second end 19 defines a front edge of top panel 20. Front panel assembly 26 includes a front panel 26a and a roll-over panel 26b coupled together along a fold line 33, and roll-over panel 26b includes one or more tabs 84. Fold lines 28, 30, 32, and 33, as well as other fold lines and/or hinge lines described herein, may include any suitable line of weakening and/or line of separation known to those skilled in the art and guided by the teachings herein provided.
Top panel 20 includes a first top side panel 34 and a second top side panel 36 extending therefrom along respective fold lines 38 and 40. More specifically, first top side panel 34 extends from top panel 20 along fold line 38, and second top side panel 36 extends from top panel 20 along fold line 40. Fold lines 38 and 40 define side edges of top panel 20. Top panel 20 further includes a top front panel 42 extending therefrom along fold line 44. Fold line 44 defines a front edge of top panel 20. Each top side panel 34 and 36 extends from a first angled edge 37 to a second angled edge 39, and top front panel 42 extends from a first angled edge 41 to a second angled edge 43. Although each top side panel 34 and 36 and the top front panel 42 is described as including angled edges 37 and 39, and 41 and 43, respectively, one or none of top side panels 34 and/or 36 or top front panel 42 may include angled edges 37, 39, 41, and 43. Further, top side panels 34 and/or 36 and top front panel 42 may include arcuate edges and/or alternatively shaped edges that extend along the length of the panels.
In the exemplary embodiment, fold line 28 includes cut lines 46. More specifically, cut lines 46 each define tab portions 48 extending from top panel 20 into back panel 22. When blank 10 is assembled to construct a container 200 (shown in
In the exemplary embodiment, top panel 20 includes a semi-circular-shaped cut-out 50. In this embodiment, a transparent sheet 51 is positioned within cut-out 50 and is made of a clear plastic material to show the contents of the container 200 when blank 10 is formed into container 200. In other embodiments, cut-out 50 is circular, rectangular, or any other suitable shape such that cut-out 50 is smaller than top panel 20. Further, in other embodiments, there is no cut-out 50 in top panel 20.
Bottom panel 24 includes a first bottom side panel 52 and a second bottom side panel 54 extending therefrom along respective fold lines 56 and 58. More specifically, first bottom side panel 52 extends from bottom panel 24 along fold line 56, and second bottom side panel 54 extends from bottom panel 24 along fold line 58. Fold lines 56 and 58 define side edges of bottom panel 24. Furthermore, first bottom side panel 52 includes a glue panel 60 (a “first glue panel” 60) and a tuck panel 62 (a “first tuck panel” 62) extending from respective fold lines 64 and 66. More specifically, glue panel 60 extends from first bottom side panel 52 along fold line 64, and tuck panel 62 extends from first bottom side panel 52 along fold line 66. Second bottom side panel 54 includes a glue panel 70 (a “second glue panel” 70) and a tuck panel 72 (a “second tuck panel” 72) extending from respective fold lines 74 and 76. More specifically, glue panel 70 extends from second bottom side panel 54 along fold line 74, and tuck panel 72 extends from second bottom side panel 54 along fold line 76. Glue panels 60 and 70 and tuck panels 62 and 72 of respective bottom side panels 52 and 54 are substantially the same. Glue panels 60 and 70 include angled edges 68. In other embodiments, the edges of glue panels 60 and 70 are substantially straight such that they are substantially the same as tuck panels 62 and 72. Fold lines 66 and 76 further define the front edge of bottom panel 24, and fold lines 64 and 74 further define the back edge of bottom panel 24.
In the exemplary embodiment, fold line 32 includes cut lines 80. More specifically, cut lines 80 each define a respective tab cut-out 82. When blank 10 is assembled to construct container 200, tab cut-outs 82 are configured to receive and retain the tabs 84 of roll-over panel 26b. In an alternative embodiment, fold line 32 may include one cut line 80 or more than two cut lines 80 to receive a corresponding number of tabs 84 extending from roll-over panel 26b.
In the exemplary embodiment, front panel 26a, roll-over panel 26b, top side panels 34 and 36, top front panel 42, bottom side panels 52 and 54, glue panels 60 and 70, and tuck panels 62 and 72 are referred to collectively and generally as “extension panels,” and are all substantially the same height H1. When blank 10 is formed into container 200, a lid 202 (shown in
As will be described below in more detail with reference to
First lid side wall 210 includes first top side panel 34, second lid side wall 212 includes second top side panel 36, and lid front wall 214 includes top front panel 42. First tray side wall 216 includes first bottom side panel 52, second tray side wall 218 includes second bottom side panel 54, and tray front wall 220 includes front panel 26a of front panel assembly 26, roll-over panel 26b, and tuck panels 62 and 72. Back wall 206 includes back panel 22 and glue panels 60 and 70. Each wall 206, 210, 212, 214, 216, 218, and 220 has a height 222. Although each wall may have a different height without departing from the scope of the present disclosure, in the embodiment shown
Although container 200 may have other orientations without departing from the scope of the present disclosure, in the embodiment shown in
Top side panels 34 and 36, top front panel 42 (that is, lid walls 210, 212, and 214), and back panel 22 (that is, back wall 206) are each oriented generally perpendicular to top wall 242, and bottom side panels 52 and 54, front panel assembly 26 (that is, tray walls 216, 218, 220), and back panel 22 (that is, back wall 206) are each oriented generally perpendicular to bottom wall 240. Glue panels 60 and 70 are oriented generally perpendicular to respective bottom side panels 52 and 54 to further define back wall 206, and tuck panels 62 and 72 are oriented generally perpendicular to respective bottom side panels 52 and 54 to further define tray front wall 220. More specifically, glue panels 60 and 70 are folded and coupled to back panel 22 to form back wall 206, and tuck panels 62 and 72 are folded inside front panel assembly 26 to form tray front wall 220 (i.e., front panel 26a is coupled against tuck panels 62 and 72, and roll-over panel 26b of front panel assembly 26 is folded over tuck panels 62 and 72, as described further herein).
Although container 200 may be secured together using any suitable fastener at any suitable location on container 200 without departing from the scope of the present disclosure, in one embodiment, adhesive (not shown) is applied to an inner surface of back panel 22 and/or an outer surface of glue panels 60 and 70, such that back panel 22 and glue panels 60 and 70 are bonded together to form back wall 206. In one embodiment, adhesive may also be applied to exterior and/or interior surfaces of tuck panels 62 and 72 and/or to an interior surface of front panel 26a of front panel assembly 26 and/or to an interior surface of roll-over panel 26b, to more tightly secure tuck panels 62 and 72 to front panel assembly 26. As a result of the above example embodiment of container 200, lid 202 and/or tray 204 may be securely closed so that various products may be securely contained within container 200.
As shown in
Machine 1000 includes a deck 1010 coupled to frame 1002 and configured to transfer blanks (e.g., blanks 10) from upstream end 1006 to downstream end 1008 and through each section 1100, 1200, 1400, 1500, and 1600. Machine 1000 further includes a plurality of protective panels 1012 coupled to frame 1002. Protective panels 1012 prevent external objects from interfering with operation of machine 1000. Protective panels 1012 may be made of plastic, glass, and/or any suitable material that facilitates protecting components of machine 1000. In the example embodiment, protective panels 1012 are substantially transparent, enabling an operator to visually monitor operation of machine 1000. Protective panels 1012, frame 1002, and certain elements of machine 1000 are omitted from
Blank transfer assembly 1102 is positioned at upstream end 1006 of machine 1000. First station 1020 is positioned downstream from blank transfer assembly 1102 in container-forming path direction X. Moreover, second station 1022 is positioned downstream from first station 1020 in container-forming path direction X, third station 1024 is positioned downstream from second station 1022 in container-forming path direction X, fourth station 1026 is positioned downstream from third station 1024 in container-forming path direction X, fifth station 1028 is positioned downstream from fourth station 1026 in container-forming path direction X, sixth station 1030 is positioned downstream from fifth station 1028 in container-forming path direction X, and seventh station 1032 is positioned at downstream end 1008 and is downstream from sixth station 1030 in container-forming path direction X. In the exemplary embodiment, pre-form section 1200, mandrel section 1400, post-form section 1500, and outfeed section 1600 are co-located adjacent to each other. This configuration enables a relatively shorter length of machine 1000. In other embodiments, pre-form section 1200, mandrel section 1400, post-form section 1500, and/or outfeed section 1600 may be separated from each other. For example, pre-form section 1200 and mandrel section 1400 may be separated from post-form section 1500 and outfeed section 1600 so that contents may be put in container 200 before container 200 is fully formed.
In the exemplary embodiment, machine 1000 is shown as having seven adjacent stations 1020, 1022, 1024, 1026, 1028, 1030, and 1032, and each station 1020, 1022, 1024, 1026, 1028, 1030, and 1032 folds blank 10 until container 200 is formed. In the exemplary embodiment, the seven adjacent stations 1020, 1022, 1024, 1026, 1028, 1030, and 1032 allow for a very fast folding of blank 10 into container 200, and machine 1000 makes approximately 25 containers 200 per minute. In other embodiments, certain stations may be combined, and there may be more space between the stations so that not all stations 1020, 1022, 1024, 1026, 1028, 1030, and 1032 are adjacent to one another. Further, the rate of making containers 200 may be faster or slower than the rate of machine 1000 in the exemplary embodiment.
In the exemplary embodiment, deck 1010 of machine 1000 includes lugs 1036 fixedly attached to respective chains 1038 that extend the length of and wrap around deck 1010. A servomechanism 1040 controls the speed at which chains 1038 move and, therefore, the speed and position of lugs 1036 with respect to deck 1010. For each blank 10, at least two lugs 1036 directly contact leading edge 16, and at least two lugs directly contact trailing edge 18. Trailing edge 18 of blank 10 is justified. That is, once trailing edge 18 of blank 10 is in contact with lugs 1036, trailing edge 18 and lugs 1036 remain in direct contact as blank 10 is formed into container 200 and moves through machine 1000. The spacing between the lugs 1036 contacting leading edge 16 and the lugs 1036 contacting trailing edge 18 of blank 10 can be manually adjusted using hand cranks 1042, or manually or automatically adjusted in any other suitable manner (e.g., via a servomechanism controlled using control system 1005), such that machine 1000 can accommodate any size, shape, and configuration of blank 10.
Further, in the exemplary embodiment, deck 1010 includes a bar 1044 that extends in container-forming path direction X and spans across second, third, and fourth stations 1022, 1024, and 1026. Bar 1044 is positioned and fixed with respect to deck 1010 and/or frame 1002 such that there is a space defined between bar 1044 and deck 1010 that is less than height H1. In the exemplary embodiment, bar 1044 is shown as an I-shaped beam. In other embodiments, bar 1044 can be any suitable size and shape.
An angle guide bar 1116 is fixedly coupled to pick-up bar 1108 at a first end 1118 of angle guide bar 1116, and is slidably and rotatably coupled to a pivot guide assembly 1120 at a second end 1122 of angle guide bar 1116. Angle guide bar 1116 and pivot guide assembly 1120 are operatively coupled to one another such that actuation of linear actuators 1104 causes pick-up bar 1108 to pivot and/or rotate a desired amount such that a blank 10 coupled to blank transfer section 1100 is aligned such that top panel 20, back panel 22, bottom panel 24, and front panel assembly 26 (shown in
In operation, linear actuators 1104 are operated and/or controlled to position suction cups 1112 to facilitate picking up a blank 10 from magazine feed 1114 and transferring blank 10 through blank transfer section 1100 to pre-form section 1200, and more specifically, to first station 1020 of pre-form section 1200. Linear actuators 1104 are actuated into the first position, causing suction cups 1112 to scalingly couple to a blank 10 within magazine feed 1114. Linear actuators 1104 are then actuated into the second position (not shown), causing arms 1106 to rotate in a first direction (generally, a downward or counter-clockwise direction with respect to the view of
In the exemplary embodiment, as blank transfer assembly 1102 transfers blank 10 to deck 1010, respective pairs or sets of lugs 1036 contact leading edge 16 and trailing edge 18 of blank 10. Lugs 1036 have a curved wedge-shape on a top 1046 thereof that transitions to a generally vertical, flat face 1048 on a bottom thereof. Tops 1046 of lugs 1036 contact exterior surface 14 of first top and bottom side panels 34 and 52 and second top and bottom side panels 36 and 54 as blank 10 is pushed down by blank transfer assembly 1102 to deck 1010. The shape of the lugs 1036 and the force of blank transfer assembly 1102 pushing blank 10 toward deck 1010 cooperate to cause first top and bottom side panels 34 and 52 and second top and bottom side panels 36 and 54 to rotate inwardly (e.g., towards interior surface 12 of blank 10) and form first lid and tray side walls 210 and 216 and second lid and tray side walls 212 and 218, respectively. That is, first top side panel 34 is forced to rotate about (that is, is folded along) fold line 38 to form first lid side wall 210 of container 200, second top side panel 36 is forced to rotate about (that is, is folded along) fold line 40 to form second lid side wall 212 of container 200, first bottom side panel 52 is forced to rotate about (that is, is folded along) fold line 56 to form first tray side wall 216 of container 200, and second bottom side panel 54 is forced to rotate about (that is, is folded along) fold line 58 to form second tray side wall 218 of container 200. Top side panels 34 and 36 are folded at a substantially 90-degree angle relative to top panel 20, and bottom side panels 52 and 54 are folded at a substantially 90-degree angle relative to bottom panel 24 such that lid side walls 210 and 212 are generally perpendicular to top wall 242 of container 200 and tray side walls 216 and 218 are generally perpendicular to bottom wall 240 of container 200. In this arrangement, blank 10 is referred to as a partially formed container 10A.
Specifically, in first station 1020, when bottom side panels 52 and 54 are folded and rotated about fold lines 56 and 58, respectively, as described above, glue panels 60 and 70, which extend from bottom side panels 52 and 54, are simultaneously rotated such that glue panels 60 and 70 are vertically oriented, or oriented at a substantially 90-degree angle relative to bottom panel 24. Likewise, tuck panels 62 and 72, which extend from bottom side panels 52 and 54, are also simultaneously rotated such that tuck panels 62 and 72 are vertically oriented, or oriented at a substantially 90-degree angle relative to bottom panel 24. As partially formed container 10B is transferred from first station 1020 to second station 1022, an extension 1202 of bar 1044 and an extension 1204 of a stationary rod 1203 (fixedly coupled to frame 1002 and/or deck 1010) contact exterior surface 14 of the vertically oriented second glue panel 70 and second tuck panel 72, respectively. Extensions 1202 and 1204 are curved such that extensions 1202 and 1204 contact and begin to rotate second glue panel 70 and second tuck panel 72, respectively, about fold lines 74 and 76, respectively, as blank 10 is moved in container-forming path direction X and second glue panel 70 and second tuck panel 72 are forced against extensions 1202 and 1204, respectively. As second glue panel 70 is forced against extension 1202 and rotated about fold line 74, second glue panel 70 begins to form second glue sub-wall 270. Likewise, as second tuck panel 72 is forced against extension 1204 and rotated about fold line 76, second tuck panel 72 begins to form second tuck sub-wall 272, respectively. Extension 1202 and extension 1204 are generally aligned with each other or in the same position with respect to container-forming path direction X and are generally curved in the same shape such that second glue panel 70 and second tuck panel 72 are folded substantially simultaneously.
Once partially formed container 10A is transferred a predetermined distance along container-forming path direction X, leading edge 16 of partially formed container 10B is translated past extensions 1202 and 1204. Bar 1044 is straight or linear beyond extension 1202, and stationary rod 1203 is straight or linear beyond extension 1204. Accordingly, as second glue panel 70 and second tuck panel 72 contact the linear portions of bar 1044 and stationary rod 1203, respectively, second glue panel 70 and second tuck panel 72 are sufficiently folded to form second glue sub-wall 270 and second tuck sub-wall 272, respectively. That is, second glue panel 70 and second tuck panel 72 are folded such that each of second glue sub-wall 270 and second tuck sub-wall 272 are generally perpendicular to second tray side wall 218.
Subsequently, once partially formed container 10A is transferred along container-forming path direction X for a predetermined distance (e.g., leading edge 16 of partially formed container 10B is moved past extensions 1202 and 1204 and/or trailing edge 18 reaches a predetermined location along deck 1010), hooks 1208 and 1212 are activated. Specifically, hook 1208 is coupled to a rotary actuator 1206, and hook 1212 is coupled to a rotary actuator 1210. Rotary actuators 1206 and 1210 are actuated (e.g., by control system 1005, shown in
Hooks 1208 and 1212 are generally aligned with each other or in the same position with respect to container-forming path direction X, and actuators 1206 and 1210 are generally activated simultaneously such that first glue panel 60 and first tuck panel 62 are folded substantially simultaneously. Actuators 1206 and 1210 may include sensors that activate actuators 1206 and 1210 as leading edge 16 moves past actuators 1206 and 1210 and/or actuators 1206 and 1210 may be on a timer that corresponds to the pace of partially formed container 10B being transferred through second station 1022 (e.g., based on a speed of chains 1038 and/or lugs 1036).
Bar 1044 is positioned such that glue sub-walls 260 and 270 are maintained in contact thereagainst, such that glue sub-walls 260 and 270 are maintained in their folded or rotated orientation with respect to tray side walls 216 and 218, as partially formed container 10B is transferred along container-forming path direction X to third station 1024. Likewise, rod 1203 is positioned such that tuck sub-walls 262 and 272 are maintained in contact thereagainst, such that tuck sub-walls 262 and 272 are maintained in their folded or rotated orientation with respect to tray side walls 216 and 218, as partially formed container 10B is transferred along container-forming path direction X from second station 1022 to third station 1024.
In the exemplary embodiment, rod 1203 is stationary, such that no extra motors or actuators are needed to facilitate the folding function of rod 1203. In alternative embodiments, rod 1203 may not be curved and/or stationary, but may be controlled by a motor or actuator to rotate, pivot, translate, and/or otherwise move with partially formed container 10B as partially formed container 10A is transferred through second station 1022 and forms partially formed container 10B.
In this arrangement (i.e., partially formed container 10B including glue sub-walls 260 and 270 and tuck sub-walls 262 and 272), blank 10 is referred to as partially formed container 10B.
In the exemplary embodiment, like rod 1203 of second station 1022 (shown in
In this arrangement (i.e., partially formed container 10B having a partially formed lid 202 and a partially formed tray 204 with a partially formed tray front wall 220), blank 10 is referred to as a partially formed container 10C.
Fourth station 1026 includes a push mechanism 1230 including a push plate 1232 with a plurality of wedges 1234 mounted thereto is controlled by a servomechanism 1236. Push mechanism 1230 is configured to further form tray front wall 220 by folding roll-over panel 26b along fold line 33 such that roll-over panel 26b is perpendicular to front panel 26a and parallel to bottom panel 24 of partially formed tray 204. More specifically, servomechanism 1236 is activated to translate push mechanism 1230 forward in a generally lateral direction Y. A generally flat bottom edge 1238 of each wedge 1234 is substantially aligned, in a generally vertical direction Z, with fold line 33, and an angled surface 1239 of each wedge 1234 extends at an angle from each respective bottom edge 1238. Accordingly, as push mechanism 1230 is translated in the lateral direction Y, angled surfaces 1239 contact exterior surface 14 of roll-over panel 26b. As push mechanism 1230 is further advanced, wedge 1234 force roll-over panel 26b to rotate about fold line 33 until roll-over panel 26b is generally perpendicular to front panel 26a.
Further, in the exemplary embodiment, fourth station 1026 further includes a push bar 1240 mounted on a pair of arms 1242 that are controlled by an actuator 1244. Push bar 1240 is configured to partially fold partially formed lid 202 along fold line 28 toward partially formed tray 204, to an angle less than 90 degrees relative to partially formed tray 204. More specifically, when partially formed container 10C is transferred into fourth station 1026 (by lugs 1036 and/or chains 1038), push bar 1240 is in a first, retracted or unadvanced state, such that push bar 1240 is generally parallel to deck 1010 and is below chains 1038 with respect to vertical direction Z.
Once partially formed container 10C is positioned at fourth station 1026, actuator 1244 activates to advance push bar 1240 upwards. More specifically, actuator 1244 is rotatably coupled to arms 1242, which are in turn coupled to push bar 1240. When actuator 1244 is activated, actuator 1244 rotates arms 1242 such that arms 1242 pivot about a pivot axis and advance push bar 1240 along an arcuate, inward and upward path. As push bar 1240 is advanced, push bar 1240 contacts exterior surface 14 of top panel 20, which forces partially formed lid 202 and back panel 22 to rotate together about fold line 30 toward partially formed tray 204 until partially formed lid 202 and back panel 22 are at a predefined angle less than 90 degrees relative to partially formed tray 204 (while partially formed lid 202 and back panel 22 remain parallel to one another).
In the example embodiment, push bar 1240 rotates partially formed lid 202 and back panel 22 about fold line 30 until partially formed lid 202 and back panel 22 are at a predetermined angle of about 45 degrees relative to partially formed tray 204. In such an embodiment, partially formed lid 202 and back panel 22 are rotated to the predetermined angle to keep glue sub-walls 260 and 270 folded, because bar 1044 terminates at fourth section 1026. That is, free ends of lid side walls 210 and 212 may contact glue sub-walls 260 and 270 once partially formed container 10C is advanced past the end of bar 1044, and may facilitate maintaining glue sub-walls 260 and 270 in their folded orientation. In other embodiments, the predetermined angle of partially formed lid 202 and back panel 22 relative to partially formed tray 204 may be any angle less than or equal to 90 degrees. Further, in other embodiments, push bar 1240 may not be included in fourth station 1026. That is, in alternative embodiments, partially formed lid 202 and/or back panel 22 may not be pre-folded with respect to partially formed tray 204 in a station upstream of mandrel section 1400.
Actuator 1244 and/or servomechanism 1236 may include sensors that activate actuator 1244 and/or servomechanism 1236 as detect when leading edge 16 moves past actuator 1244 and/or servomechanism 1236, and/or actuator 1244 and/or servomechanism 1236 may be on a timer that corresponds to the pace of partially formed container 10C going through fourth station 1026 (e.g., based on a speed of chains 1038 and/or lugs 1036). Further, in other embodiments, push mechanism 1230 and/or push bar 1240 may be replaced by stationary rods or bars like those shown in
In this arrangement (i.e., partially formed container 10C having further partially formed tray front wall 220 and partially formed lid 202 being partially folded at a predetermined angle relative to partially formed tray 204), blank 10 is referred to as a partially formed container 10D.
In fifth station 1028, tray 204 is fully formed, and partially formed lid 202 and back panel 22 are further rotated with respect to tray 204, to a position such that back panel 22 and partially formed lid 202 are generally perpendicular to tray 204.
Fifth station 1028 includes a mandrel assembly 1402 configured to fully form tray 204. Mandrel assembly 1402 includes a mandrel plate 1404 and a plurality of compression members 1406 coupled to mandrel plate 1404 at each corner of mandrel plate 1404. A servomechanism 1408 controls vertical movement of mandrel assembly 1402 along vertical direction Z, and a plurality of actuators 1410 control translational movement of compression members 1406 along lateral direction Y.
To fully form tray 204, mandrel assembly 1402 is translated downward until mandrel plate 1404 is positioned above bottom panel 24 (shown in
Fifth station 1028 also includes a push bar 1412 coupled to arms 1414, which are in turn rotatably coupled to an actuator 1416. A push plate 1415 is also coupled to arms 1414, between push bar 1412 and actuator 1416. When actuator 1416 is activated, actuator 1416 rotates arms 1414 such that arms 1414 pivot about a pivot axis and advance push bar 1412 and push plate 1415 along an arcuate, inward and upward path. As push bar 1412 is advanced, push bar 1412 contacts exterior surface 14 of top panel 20. Simultaneously, as push plate 1415 is advanced, push plate 1415 contacts exterior surface of back panel 22. Push bar 1412 and push plate 1415 operate cooperative to further rotate back panel 22 and partially formed lid 202 about fold line 30 until back panel 22 and partially formed lid 202 are substantially perpendicular to bottom panel 24 of tray 204 (while partially formed lid 202 and back panel 22 remain parallel to one another). As back panel 22 is rotated into the perpendicular orientation with respect to tray 204, back panel 22 couples to glue sub-walls 260 and 270, and adhesive 1254 of back panel 22 bonds back panel 22 to glue sub-walls 260 and 270. Accordingly, back panel 22 and glue sub-walls 260 and 270 together form back wall 206 of container 200. As described above with respect to
Once back wall 206 is formed, compression members 1406 adjacent back wall 206 are activated to compress glue sub-walls 260 and 270 against back panel 22 to ensure back panel 22 is securely bonded with glue sub-walls 260 and 270. Specifically, actuators 1410 are activated to translate the compression members 1406 adjacent back wall 206 generally rightward along lateral direction Y, with respect to the view of
Further, once tray front wall 220 is formed, compression members 1406 adjacent tray front wall 220 are activated to compress roll-over panel 26b against front panel 26a and/or tuck panels 62 and 72 to force tabs 84 (shown in
In this arrangement (i.e., partially formed container 10D having formed tray 204, and partially formed lid 202 and back wall 206 being perpendicular to tray 204), blank 10 is referred to as a partially formed container 10E.
In the exemplary embodiment, like rods 1203 and 1220 of second station 1022 (shown in
Although not specifically shown, post-form section 1500 can include components configured to further fold and/or bond one or more panels of container 200. For example, in the exemplary embodiment, top front panel 42 is not folded by machine 1000 and is folded manually after container 200 goes through machine 1000. In alternative embodiments, post-form section 1500 includes rod or push bar configured to fold top front panel 42 about fold line 44 and into engagement with exterior surface 14 of front panel 26a of front panel assembly 26 (that is, exterior surface 14 of tray front wall 220).
In the example embodiment, one or more actuators 1104, 1206, 1210, 1244, 1410, and 1416, adhesive applicator 1252, servomechanisms 1040, 1236, and 1408, and suction cups 1112 are integrated with machine control system 1005, and that control system 1005 is configured to transmit signals to each control in operation.
In certain embodiments, control system 1005 is configured to facilitate selecting a speed and/or timing of the movement and/or activation of the devices and/or components associated with each of actuators 1104, 1206, 1210, 1244, 1410, and 1416, adhesive applicator 1252, servomechanisms 1040, 1236, and 1408, and suction cups 1112. The devices and/or components may be controlled either independently or as part of one or more linked mechanisms. For example, in embodiments where one or more of actuators 1104, 1206, 1210, 1244, 1410, and 1416 is a servomechanism, the speed and timing of each such actuator can be controlled independently as commanded by control system 1005.
In certain embodiments, control panel 1004 allows an operator to select a recipe for use by control system 1005 that is appropriate for a particular blank and/or container. The operator typically does not have sufficient access rights/capabilities to alter the recipes, although select users can be given privileges to create and/or edit recipes. Each recipe is a set of computer instructions that instruct machine 1000 as to forming the container 200 (shown in
This application is a continuation application of U.S. patent application Ser. No. 16/206,366, filed Nov. 30, 2018, the entire contents and disclosure of which are hereby incorporated by reference herein.
Number | Date | Country | |
---|---|---|---|
Parent | 17371881 | Jul 2021 | US |
Child | 18662901 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 16206366 | Nov 2018 | US |
Child | 17371881 | US |