Carton folding aid

Abstract

The utility model discloses a paper box folding auxiliary device, including frame and a plurality of blocking piece, a plurality of blocking piece are located on the frame, and define the rectangular space suitable for accommodating paper box, and at least two in a plurality of blocking piece can slide relative to the frame, to make the size of rectangular space adjustable, wherein, the blocking piece of a plurality of blocking piece relative to the frame can slide is equipped with first press locking piece, to selectively with the blocking piece and the frame locking fixed. The paper box folding auxiliary device of the utility model, set up first press locking piece on the blocking piece, realized the locking fixed between the blocking piece and the frame. Press locking piece makes the fixed operation of blocking piece position more convenient and fast, only needs to press to complete locking, compares bolt and has more stable and reliable locking effect, effectively avoided the problem that the blocking piece loosens because of operation vibration or stress.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, and in particular to a paper box folding auxiliary device. Background Technology

[0002] A cardboard box folding fixture typically consists of a rectangular frame and supports mounted on several sides of the frame. These supports provide support for the various side panels of the cardboard. The folding principle involves placing the unfolded cardboard within the frame, with the bottom panel positioned in the center. Each side panel rests on its corresponding support. By pressing down on the center bottom panel, it sinks, causing the side panels to fold inwards under the support of the supports, thus facilitating the folding of the cardboard box.

[0003] To accommodate different sized cardboard boxes, these support components are connected to the frame via a sliding connection. The size can be adjusted by changing the position of the support components. Each support component has an adjusting bolt; once the support is adjusted to the appropriate position, the bolt is manually tightened to hold it against the frame. However, these bolts require manual tightening, which is laborious and difficult to secure. Furthermore, the bolt-holding locking method is unreliable and prone to loosening, especially when the base plate is pressed down. If the support components are unstable, it will affect the folding efficiency and quality of the cardboard. Utility Model Content

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the purpose of this invention is to provide a paper box folding auxiliary device.

[0005] To achieve the above objectives, a paper box folding auxiliary device according to an embodiment of the present invention includes:

[0006] frame;

[0007] Multiple blocking elements are disposed on the frame and define a rectangular space suitable for accommodating a cardboard box. At least two of the multiple blocking elements are slidable relative to the frame so that the size of the rectangular space is adjustable.

[0008] Among the plurality of blocking members, the blocking member that is slidable relative to the frame is provided with a first pressing locking member, which is used to selectively lock and fix the blocking member to the frame.

[0009] According to the paper box folding auxiliary device provided in this embodiment, a first pressing and locking member is provided on the blocking member to achieve locking and fixing between the blocking member and the frame. The pressing and locking member makes the fixing operation of the blocking member position simpler and faster, and locking can be completed by simply pressing, which significantly reduces the effort required for operation and improves the convenience of locking. In addition, this pressing and locking structure has a more stable and reliable locking effect than bolt holding, effectively avoiding the problem of the blocking member loosening due to operational vibration or force, thereby ensuring the stability of the blocking member position during the paper box folding process, and thus improving the efficiency of paper box folding and the final forming quality.

[0010] In addition, the polarization-maintaining coupler according to the above embodiments of the present invention may also have the following additional technical features:

[0011] According to one embodiment of the present invention, each of the blocking members has two connecting posts at its upper end, and each of the connecting posts is fitted with a guide wheel by an interference fit; the two guide wheels are at different heights, and the upper guide wheel is located outside the lower guide wheel, so that the wheel surfaces of the two guide wheels form a guide surface that slopes from top to bottom toward the inside of the rectangular space.

[0012] According to one embodiment of the present invention, the frame includes a first guide rail, a second guide rail, a third guide rail and a fourth guide rail, wherein the first guide rail and the second guide rail are arranged opposite each other front to back, and the third guide rail and the fourth guide rail are arranged opposite each other left to right;

[0013] The plurality of blocking members include two front blocking members, two rear blocking members, two left blocking members, and two right blocking members; the two front blocking members are spaced apart on the first guide rail and at least one is slidable relative to the first guide rail for folding the front panel of the cardboard box; the two rear blocking members are spaced apart on the second guide rail and at least one is slidable relative to the second guide rail for folding the rear panel of the cardboard box.

[0014] Two left blocking members are spaced apart on the third guide rail, and at least one is slidable relative to the third guide rail, for folding the left side panel of the cardboard box; two right blocking members are spaced apart on the fourth guide rail, and at least one is slidable relative to the fourth guide rail, for folding the right side panel of the cardboard box.

[0015] According to one embodiment of the present invention, one of the two rear blocking members is fixed relative to an adjacent left blocking member, and the other of the two rear blocking members is fixed relative to an adjacent right blocking member.

[0016] According to one embodiment of the present invention, one of the two front blocking members is fixed relative to the third guide rail, and the other of the two front blocking members is fixed relative to the fourth guide rail.

[0017] According to one embodiment of the present invention, one of the two left blocking members adjacent to the rear blocking member has an upwardly protruding first blocking arm portion for folding the folding lug at one end of the rear side panel of the cardboard box.

[0018] One of the two right blocking members adjacent to the rear blocking member has an upwardly protruding second blocking arm for folding the lug at the other end of the rear side panel of the carton;

[0019] The first stop arm and the left stop member are an integral structure, and the second stop arm and the right stop member are an integral structure.

[0020] According to one embodiment of the present invention, it further includes two limiting arms, one of which is disposed on the third guide rail and adjacent to the first guide rail, and the other of which is disposed on the fourth guide rail and adjacent to the first guide rail.

[0021] Each of the limiting arms is provided with a limiting member for limiting the front side panel of the cardboard box. The limiting member is slidably disposed on the limiting arm, and the limiting member is provided with a second pressing locking member for selectively locking and fixing the limiting member to the limiting arm.

[0022] According to one embodiment of the present invention, the limiting arm includes a vertical section and a horizontal section, the vertical section and the horizontal section are connected to form an L or T-shaped structure, the horizontal section extends forward in the horizontal direction, and the limiting member is disposed on the horizontal section;

[0023] A guide portion is formed at one end of the horizontal segment adjacent to the rectangular space, which is used to guide the folding ears of the front side panel of the cardboard box for folding.

[0024] According to one embodiment of the present invention, the left blocking member near the first guide rail among the two left blocking members is provided with an upwardly protruding first guide positioning part, the first guide positioning part and the first stop arm part are respectively limited to a first distance for guiding the left side plate of the paper box to be positioned in the front-back direction; the right blocking member near the first guide rail among the two right blocking members is provided with an upwardly protruding second guide positioning part, the second guide positioning part and the second stop arm part are respectively limited to a second distance for guiding the right side plate of the paper box to be positioned in the front-back direction.

[0025] According to one embodiment of the present invention, the first pressing locking member is a lever-type pressing locking member.

[0026] According to one embodiment of the present invention, the lever-type pressing locking member includes a pivot portion and a pressing handle, the pivot portion being pivotally connected to the blocking member, and the pivot portion having a pressure-applying portion protruding radially outward;

[0027] The pressing handle is connected to the pivot part. When the pressing handle is pressed, the pressing part rotates with the pivot part and abuts against the frame to lock and fix the blocking member to the frame.

[0028] According to one embodiment of the present invention, the second pressing locking member has the same structure as the first pressing locking member.

[0029] According to one embodiment of the present invention, a support arm is pivotally connected to each of the two rear blocking members for supporting the cover plate of the cardboard box.

[0030] According to one embodiment of the present invention, an angle limiting structure is provided between the support arm and the rear blocking member to restrict the pivoting of the support arm between the folded position and the unfolded position.

[0031] When the support arm is in the folded position, the support arm is located inside the rectangular space. When the support arm is in the unfolded position, the support arm is located outside the rectangular space and forms a predetermined support angle.

[0032] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the paper box folding auxiliary device according to an embodiment of the present invention;

[0035] Figure 2 This is an exploded view of the paper box folding auxiliary device according to an embodiment of the present invention;

[0036] Figure 3 This is a partially exploded view of the paper box folding auxiliary device according to an embodiment of the present invention;

[0037] Figure 4 This is a partial cross-sectional view of the paper box folding auxiliary device according to an embodiment of the present invention;

[0038] Figure 5 This is another structural schematic diagram of the paper box folding auxiliary device according to an embodiment of this utility model;

[0039] Figure 6 This is an exploded view of another structure of the paper box folding auxiliary device according to an embodiment of this utility model;

[0040] Figure 7 This is a structural diagram of a cardboard box (the unfolded cardboard).

[0041] Figure label:

[0042] 10. Framework;

[0043] 101. First guide rail;

[0044] 102. Second guide rail;

[0045] 103. Third guide rail;

[0046] 104. Fourth guide rail;

[0047] 20a. Front blocking component;

[0048] 20b. Rear stop;

[0049] 20c, Left blocking component;

[0050] 20d, right blocking component;

[0051] 201. Guide wheel;

[0052] 202a, First stop arm;

[0053] 202b, Second stop arm;

[0054] 203a. First guidance and positioning unit;

[0055] 203b, Second guide and positioning unit;

[0056] H2O4, groove;

[0057] 21. First pressing locking element;

[0058] 211. Pivot section;

[0059] 211a. Pressure application section;

[0060] 212. Press the handle;

[0061] 213. Shaft pin;

[0062] 30. Limit arm;

[0063] 301. Vertical section;

[0064] 302. Horizontal section;

[0065] 3021, Guidance Department;

[0066] 31. Limiting components;

[0067] 32. Second pressing locking element;

[0068] 40. Support arm;

[0069] 401. Protrusion;

[0070] 50. Cardboard;

[0071] 501. Base plate;

[0072] 502. Front side panel;

[0073] 503. Rear side panel;

[0074] 504. Left side panel;

[0075] 505. Right side panel;

[0076] 506. Cover plate.

[0077] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0078] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0079] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0080] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0081] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0082] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0083] The following describes in detail, with reference to the accompanying drawings, the paper box folding auxiliary device of this utility model.

[0084] Reference Figures 1 to 7 As shown, the cardboard box folding auxiliary device provided according to the embodiment of the present utility model includes a frame 10 and a plurality of blocking components.

[0085] Specifically, the frame 10 is a support structure. For example, the frame 10 may be a rectangular structure, preferably made of a material with sufficient rigidity and strength, such as metal materials (e.g., aluminum alloy, steel) or high-strength engineering plastics, to ensure that no significant deformation occurs when the cardboard box is subjected to force during folding.

[0086] Multiple blocking elements are provided on the frame 10 and define a rectangular space suitable for accommodating a cardboard box. At least two of the multiple blocking elements are slidable relative to the frame 10 so that the size of the rectangular space is adjustable.

[0087] For example, these blocking elements can be arranged on the four sides of the frame 10. The blocking elements on different sides are used to support the various side panels of the cardboard box, such as the front side panel 502, the rear side panel 503, the left side panel 504, and the right side panel 505. The rectangular space is sized to accommodate the bottom panel 501 of the cardboard box to be folded. In use, the cardboard 50 to be folded is placed on the frame 10, with the bottom panel 501 of the cardboard 50 above the rectangular space and each side panel above its respective blocking element. When the bottom panel 501 is pressed down, it sinks into the rectangular space, and each side panel folds inward under the support and obstruction of its respective blocking element.

[0088] At least two stops on the frame 10 are slidable relative to the frame 10. Typically, the two stops are located on the same side of the frame 10, allowing at least one side of the rectangular space to be translated, thus adjusting its size. In other words, the sliding adjustment function of the stops makes the size of the rectangular space defined by the stops adjustable, thereby accommodating the folding requirements of cardboard boxes of different sizes. The sliding engagement between the stops and the frame 10 can be achieved through common sliding structures such as guide rails and grooves or sliding holes.

[0089] Among the plurality of blocking members, the slidable blocking member relative to the frame 10 is provided with a first pressing locking member 21 for selectively locking the blocking member to the frame 10. The first pressing locking member 21 allows the operator to selectively lock the blocking member to the frame 10 or release the locking to allow the blocking member to slide by a simple pressing action.

[0090] According to the carton folding auxiliary device provided in this embodiment of the present invention, a first pressing and locking member 21 is provided on the blocking member to achieve locking and fixing between the blocking member and the frame 10. The pressing and locking member makes the fixing operation of the blocking member position simpler and faster, and locking can be completed by simply pressing, which significantly reduces the effort required for operation and improves the convenience of locking. In addition, this pressing and locking structure has a more stable and reliable locking effect than bolt holding, effectively avoiding the problem of the blocking member loosening due to operational vibration or force, thereby ensuring the stability of the blocking member position during the carton folding process, and thus improving the efficiency of carton folding and the final forming quality.

[0091] In some embodiments of this utility model, the first pressing locking member 21 is a lever-type pressing locking member. By adopting a lever-type pressing locking member, the operator can complete the secure locking and quick unlocking of the blocking member in a more effortless manner, significantly reducing the difficulty of the locking operation. At the same time, the mechanical amplification effect provided by the lever ensures that a sufficiently large positive pressure is generated on the frame 10, forming a stable mechanical engagement, thereby greatly enhancing the stability and anti-loosening ability of the locking.

[0092] Reference Figures 3 to 4 As shown, in one embodiment of the present invention, the lever-type pressing locking member includes a pivot portion 211 and a pressing handle 212. The pivot portion 211 is pivotally connected to the blocking member, and the pivot portion has a radially outward protruding pressing portion 211a.

[0093] For example, the pivot portion 211 and the pressing handle 212 are made of a metal (such as steel or aluminum alloy) or a high-strength engineering plastic with good wear resistance and strength. The pivot portion 211 is pivotally mounted on the slidable blocking member by means of a pin 213 or the like. For example, the blocking member has two opposing ears with through holes, and the pivot portion 211 is located between the two ears. A pin passes through the through holes in the ears and the pivot portion 211, achieving a pivotal engagement between the pivot portion 211 and the blocking member. The pressure portion 211a on the pivot portion 211 can be an eccentric cam flange, a wedge block, or simply a section with a large radius on the outer peripheral surface of the pivot portion 211.

[0094] The pressing handle 212 is connected to the pivot part 211. When the pressing handle 212 is pressed, the pressure-applying part 211a rotates with the pivot part 211 and abuts against the frame 10 to lock the blocking member to the frame 10. The pressing handle 212 is the part where the operator directly applies force, and it is fixedly connected to the pivot part 211 or integrally formed. The pressing handle 212 is convenient for the user to hold and apply force; for example, it can be a flat paddle or a curved finger lever. When the operator applies pressing, flicking, or rotating force to the pressing handle 212, the force is transmitted to the pivot part 211 through the pressing handle 212, driving the pivot part 211 to rotate.

[0095] In the unlocked state, the pressing handle 212 is typically in an initial position (e.g., tilted upwards or to one side). In this position, the pivot 211 rotates to an angle such that there is a gap between the pressing portion 211a thereon and the corresponding surface of the frame 10 (e.g., the outer wall of the frame 10), or the non-protruding portion of the pressing portion 211a faces the frame 10 directly, thus applying no pressure to the frame 10 or only minimal contact. At this time, the stop can slide freely on the frame 10 for dimensional adjustment.

[0096] When it is necessary to lock the blocking member in a specific position, the operator presses down or flicks the pressing handle 212. The movement of the pressing handle 212 causes the pivot 211 to rotate about its pivot axis. As the pivot 211 rotates, its radially outward-protruding pressure part 211a also rotates. Because the pressure part 211a is protruding, its rotational path causes it to gradually approach and eventually press tightly against the surface of the frame 10. When the pressure part 211a comes into strong contact with the surface of the frame 10, significant frictional force or a wedging effect is generated. This holding force applied to the frame 10 by the pressure part 211a effectively prevents the blocking member from sliding relative to the frame 10, thereby achieving a firm locking and fixation between the blocking member and the frame 10.

[0097] To release the locking state, the operator presses the handle 212 in the opposite direction (e.g., lifts it up or flicks it in the opposite direction), causing the pivot 211 to rotate in the opposite direction. The pressure part 211a on it then disengages from the tight contact with the frame 10, the pressure is released, and the blocking member regains its sliding ability.

[0098] In this embodiment, a lever-type pressing locking component composed of a pivot part 211 and a pressing handle 212 is used. The structure is relatively simple, the action is intuitive, and the locking effect is reliable. Moreover, its lever effect allows users to generate sufficient locking force with a small amount of force, ensuring that the blocking component is locked reliably and stably, and significantly improving the convenience of use and the stability of locking.

[0099] Reference Figures 1 to 3 As shown, in one embodiment of the present invention, each of the blocking members has two connecting posts at its upper end, and each of the connecting posts is fitted with a guide wheel 201 by an interference fit.

[0100] The two guide wheels 201 are positioned at different heights, with the upper guide wheel 201 located outside the lower guide wheel 201, so that the wheel surfaces of the two guide wheels 201 form a guide surface that slopes downwards towards the inside of the rectangular space. Here, "outside" means that, relative to the rectangular workspace, the upper guide wheel 201 is further away from the rectangular workspace.

[0101] With the above layout, the upper guide wheel 201 is both higher than the lower guide wheel 201 and further outward than the lower guide wheel 201. The surfaces of the two guide wheels 201 together form a guide surface that slopes from top to bottom and from the outside towards the inside of the rectangular workspace. When the side panel of the cardboard 50 is pressed down by the base plate 501 and folded upward, the outer surface of the side panel will first contact the higher and outer guide wheel 201. Subsequently, as it continues to fold upward, it will contact the lower and inner guide wheel 201. Guided by the guide surface formed by these two guide wheels 201, the side panel being folded can be smoothly guided inward and downward to the predetermined folding position. This effectively solves the problems of edge jamming and incomplete folding that may occur when the side panel of the cardboard 50 is folded upward, helping to form a more regular carton edge, thereby significantly improving the folding quality and production efficiency of the carton, while also reducing the dependence on operator skills.

[0102] Reference Figures 1 to 2 and Figures 5 to 6 As shown, in one embodiment of the present invention, the frame 10 includes a first guide rail 101, a second guide rail 102, a third guide rail 103 and a fourth guide rail 104. The first guide rail 101 and the second guide rail 102 are arranged opposite each other front to back, and the third guide rail 103 and the fourth guide rail 104 are arranged opposite each other left to right.

[0103] The plurality of blocking members include two front blocking members 20a, two rear blocking members 20b, two left blocking members 20c, and two right blocking members 20d; the two front blocking members 20a are spaced apart on the first guide rail 101 and at least one is slidable relative to the first guide rail 101, for folding the front side panel 502 of the paper box; the two rear blocking members 20b are spaced apart on the second guide rail 102 and at least one is slidable relative to the second guide rail 102, for folding the rear side panel 503 of the paper box.

[0104] Two left blocking members 20c are spaced apart on the third guide rail 103, and at least one is slidable relative to the third guide rail 103, for folding the left side panel 504 of the paper box; two right blocking members 20d are spaced apart on the fourth guide rail 104, and at least one is slidable relative to the fourth guide rail 104, for folding the right side panel 505 of the paper box.

[0105] Preferably, both front blocking members 20a can slide relative to the first guide rail 101, and both rear blocking members 20b can slide relative to the second guide rail 102. Both left blocking members 20c can slide relative to the third guide rail 103, and both right blocking members 20d can slide relative to the fourth guide rail 104.

[0106] In other words, the multiple blocking members are divided into four groups to correspond to the four main sides of the cardboard box. Specifically, this includes two front blocking members 20a, two rear blocking members 20b, two left blocking members 20c, and two right blocking members 20d. The two front blocking members 20a are used to support and block the folding of the front side panel 502 of the cardboard box. The two rear blocking members 20b are used to fold the rear side panel 503 of the cardboard box. The two left blocking members 20c are used to fold the left side panel 504 of the cardboard box. The two right blocking members 20d are used to fold the right side panel 505 of the cardboard box. The slidable blocking members in the two front blocking members 20a, two rear blocking members 20b, two left blocking members 20c, and two right blocking members 20d are all equipped with a first pressing locking member 21 so that they can be quickly and reliably locked and fixed after being adjusted to a suitable position. By adjusting the position of these blocking components, a rectangular space suitable for different sized cardboard boxes can be precisely defined, greatly enhancing the device's versatility for various cardboard box specifications.

[0107] Reference Figure 2 As shown, in one embodiment of the present invention, one of the two rear blocking members 20b is fixed relative to an adjacent left blocking member 20c, for example by screw locking, and the other of the two rear blocking members 20b is fixed relative to an adjacent right blocking member 20d, for example by screw locking.

[0108] With this configuration, the two rear corners (left and right rear corners) of the cardboard box are defined by these two pre-fixed relatively fixed blocking members, ensuring reliable definition of the two rear corners. Furthermore, during adjustment, the third guide rail 103 and the fourth guide rail 104 can move closer or further apart. During this process, the adjacent left blocking member 20c and rear blocking member 20b move synchronously with the third guide rail 103, and the right blocking member 20d and rear blocking member 20b move synchronously with the fourth guide rail 104. This structural design improves the stability of the frame 10 structure, and also simplifies and facilitates adjustment, eliminating the need for independent sliding adjustment of each blocking member. More importantly, this relative fixation ensures that the two rear corners remain stable throughout the adjustment process, helping to maintain the squareness of the folded cardboard box and improving the stability and consistency of the forming quality.

[0109] Reference Figure 2 As shown, in one embodiment of the present invention, one of the two front blocking members 20a is fixed relative to the third guide rail 103, and the other of the two front blocking members 20a is fixed relative to the fourth guide rail 104.

[0110] During adjustment, the third guide rail 103 and the fourth guide rail 104 can move closer or further apart. In this process, the two front blocking members 20a slide synchronously relative to the third guide rail 103 and the fourth guide rail 104, improving the convenience of sliding adjustment. At the same time, it also improves the stability of the overall structure.

[0111] In one embodiment of this utility model, one of the two left blocking members 20c adjacent to the rear blocking member 20b has an upwardly protruding first blocking arm portion 202a for folding the folding lug 5031 at one end of the rear side panel 503 of the cardboard box. One of the two right blocking members 20d adjacent to the rear blocking member 20b has an upwardly protruding second blocking arm portion 202b for folding the folding lug 5031 at the other end of the rear side panel 503 of the cardboard box.

[0112] The first stop arm 202a and the left stop member 20c are integrally formed, and the second stop arm 202b and the right stop member 20d are integrally formed. Preferably, the first stop arm 202a and the second stop arm 202b are sheet-like structures, and the upper ends of the first stop arm 202a and the second stop arm 202b have chamfers to facilitate the folding of the folding lug 5031 of the rear side plate 503.

[0113] In practical use, since the first stop arm 202a and the second stop arm 202b protrude upwards, that is, the high point of the first stop arm 202a exceeds the left stop member 20c and the high point of the second stop arm 202b exceeds the right stop member 20d, during the folding process, when the cardboard 50 is placed in the rectangular space, the folding ears 5031 at both ends of the rear side panel 503 first contact the first stop arm 202a and the second stop arm 202b. As the bottom plate 501 of the cardboard 50 is pressed downwards, the folding ears 5031 at one end of the rear side panel 503... The rear side panel 503 is blocked by the first stop arm 202a and folds inward. The folding lug 5031 at the other end of the rear side panel 503 is blocked by the second stop arm 202b and folds inward. As the bottom plate 501 continues to press down, the left side panel 504 and the right side panel 505 of the carton come into contact with the left stop 20c and the right stop 20d respectively, thereby causing the left side panel 504 and the right side panel 505 to fold inward. This ensures that the two folding lugs 5031 of the rear side panel 503 are folded inside the left side panel 504 and the right side panel 505, achieving orderly and reliable folding of the carton.

[0114] In this embodiment, by providing an upwardly protruding first arm 202a and a second arm 202b on the left and right blocking members 20c and 20d respectively, the carton folding auxiliary device of this embodiment can achieve more precise and automatic assisted folding of the folding ears 5031 at both ends of the rear side panel 503, simplifying the operation steps, reducing the need for manual adjustment of small parts, significantly improving the efficiency of folding cartons (such as airplane boxes), ensuring the accuracy of folding the folding ears 5031, and thus improving the overall quality of the final formed carton.

[0115] Reference Figures 1 to 6 As shown, in one embodiment of this utility model, the cardboard box folding auxiliary device further includes two limiting arms 30. One of the two limiting arms 30 is disposed on the third guide rail 103 and adjacent to the first guide rail 101, and the other of the two limiting arms 30 is disposed on the fourth guide rail 104 and adjacent to the first guide rail 101. That is, the two limiting arms 30 are located at the left and right corners of the front side of the rectangular space, serving to position the front side panel 502 of the cardboard box.

[0116] Each of the limiting arms 30 is provided with a limiting member 31 for limiting the front side panel 502 of the cardboard box. The limiting member 31 is slidably disposed on the limiting arm 30, and the limiting member 31 is provided with a second pressing locking member 32 for selectively locking the limiting member 31 to the limiting arm 30. The structure and working principle of the second pressing locking member 32 are similar to the first pressing locking member 21 used to lock the blocking member, for example, a lever-type pressing locking structure can also be used. When it is necessary to adjust the position of the limiting member 31, the operator can put the second pressing locking member 32 in the unlocked state, at which time the limiting member 31 can slide freely on the limiting arm 30; when the adjustment is in place, simply pressing the second pressing locking member 32 will generate a pressing force with the surface of the limiting arm 30, thereby achieving a firm locking and fixation between the limiting member 31 and the limiting arm 30.

[0117] In actual operation, when the operator places the cardboard 50 into the rectangular space, the two limiting arms 30 support the front side plate 502 of the cardboard 50. At the same time, the front edge of the front side plate 502 is ensured to abut against the limiting member 31. This allows the user to quickly and accurately position and place the cardboard 50, ensuring that after placing the cardboard 50, the bottom plate 501 of the cardboard 50 is just above the rectangular space. Pressing down on the bottom plate 501 completes the folding action in one go. In this way, the operator does not need to spend extra time aligning the cardboard 50 with the rectangular space, which greatly improves the convenience of operation and folding efficiency. At the same time, it also ensures the stability of the folding operation and the squareness and consistency of the final formed cardboard box.

[0118] Reference Figure 1 and Figure 5 As shown, in one embodiment of the present invention, the limiting arm 30 includes a vertical section 301 and a horizontal section 302. The vertical section 301 and the horizontal section 302 are connected to form an L or T-shaped structure. The horizontal section 302 extends forward in the horizontal direction, and the limiting member 31 is provided on the horizontal section 302.

[0119] A guide portion 3021 is formed at one end of the horizontal segment 302 adjacent to the rectangular space, for guiding the folding ears 5021 of the front side panel 502 of the cardboard box to fold. The surface of the guide portion 3021 may be processed into a smooth arc transition or have a guide chamfer.

[0120] In this embodiment, the guiding part 3021 functions similarly to the first stop arm 202a and the second stop arm 202b described above. The first stop arm 202a and the second stop arm 202b are used to guide the folding of the flaps 5031 at both ends of the rear side panel 503, ensuring that the flaps 5031 of the rear side panel 503 are folded inside the left side panel 504 and the right side panel 505. In this embodiment, when folding, the two flaps 5021 of the front side panel 502 are first guided inward by the guiding part of the limiting stop arm 30, and then the front side panel 502 of the carton is supported and blocked by the front stop member 20a. This ensures that the flaps 5021 at both ends of the front side panel 502 are folded inside the left side panel 504 and the right side panel 505, avoiding defects in the finished product caused by incorrect folding sequence, and improving the efficiency and overall quality of the folding carton.

[0121] Reference Figure 5 and Figure 6 As shown, in one embodiment of this utility model, the left blocking member 20c near the first guide rail 101 is provided with an upwardly protruding first guide positioning part 203a. The first guide positioning part 203a and the first stop arm part 202a are respectively limited by a first distance for guiding the left side plate 504 of the paper box in the front-back direction for positioning. The right blocking member 20d near the first guide rail 101 is provided with an upwardly protruding second guide positioning part 203b. The second guide positioning part 203b and the second stop arm part 202b are respectively limited by a second distance for guiding the right side plate 505 of the paper box in the front-back direction for positioning.

[0122] In practical use, when the operator places the cardboard into the rectangular space, the front edge of the front panel 502 abuts against the limiting member 31 for initial positioning. Then, when the bottom plate 501 of the cardboard is pressed, the left panel 504 is inserted into the first gap between the first guide positioning part 203a and the first stop arm part 202a, and the right panel 505 is inserted into the gap between the second guide positioning part 203b and the second stop arm part 202b, ensuring that the left panel 504 and the right panel 505 are positioned in the front-back direction respectively. In this way, the user can quickly and accurately position and place the cardboard, and ensure that the left panel 504 and the right panel 505 are quickly positioned in place, further improving the convenience and accuracy of the folding operation.

[0123] Reference Figures 1 to 2 and Figures 5 to 6 As shown, in some embodiments of this utility model, a support arm 40 is pivotally connected to each of the two rear blocking members 20b. The two support arms 40 are used to support the cover plate 506 of the cardboard box, ensuring that when the cardboard 50 is placed in a rectangular space, the cover plate of the cardboard 50 is supported by the two support arms 40 at a certain tilt angle, thereby ensuring that the cardboard 50 is stably and accurately positioned on the folding auxiliary device, improving the reliability during folding.

[0124] Reference Figure 6 As shown, in one embodiment of this utility model, an angle limiting structure is provided between the support arm 40 and the rear stop member 20b to restrict the pivoting of the support arm 40 between the folded position and the unfolded position. It is understood that this angle limiting structure can be a combination of the protrusion 401 and the groove H204, or it can be two stops at different positions that can block the support arm 40, as long as they can provide a limiting function.

[0125] When the support arm 40 is in the folded position, the support arm 40 is located inside the rectangular space. When the support arm 40 is in the unfolded position, the support arm 40 is located outside the rectangular space and forms a predetermined support angle.

[0126] When using this auxiliary device, the support arm 40 can be rotated to the unfolded position. At this time, the support arm 40 forms a predetermined support angle, which can effectively support the cover plate 506 of the cardboard box. When the auxiliary device is not needed, the support arm 40 can be rotated to the folded position. At this time, the support arm 40 is located inside the rectangular space, reducing the space occupied and making it convenient to store and carry the auxiliary device.

[0127] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0128] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A carton folding aid device, characterised in that, include: frame; Multiple blocking elements are disposed on the frame and define a rectangular space suitable for accommodating a cardboard box. At least two of the multiple blocking elements are slidable relative to the frame so that the size of the rectangular space is adjustable. Among the plurality of blocking members, the blocking member that is slidable relative to the frame is provided with a first pressing locking member, which is used to selectively lock and fix the blocking member to the frame.

2. The cardboard box folding auxiliary device according to claim 1, characterized in that, The upper end of the blocking member is provided with two connecting posts, and guide wheels are installed on the connecting posts by interference fit; the two guide wheels are at different heights, and the upper guide wheel is located outside the lower guide wheel, so that the wheel surfaces of the two guide wheels form a guide surface that slopes from top to bottom toward the inside of the rectangular space.

3. The cardboard box folding auxiliary device according to claim 1, characterized in that, The frame includes a first guide rail, a second guide rail, a third guide rail, and a fourth guide rail. The first and second guide rails are arranged opposite each other front to back, and the third and fourth guide rails are arranged opposite each other left to right. The plurality of blocking members include two front blocking members, two rear blocking members, two left blocking members, and two right blocking members; the two front blocking members are spaced apart on the first guide rail and at least one is slidable relative to the first guide rail for folding the front panel of the cardboard box; the two rear blocking members are spaced apart on the second guide rail and at least one is slidable relative to the second guide rail for folding the rear panel of the cardboard box. The two left blocking members are spaced apart on the third guide rail and at least one of them is slidable relative to the third guide rail for folding the left side panel of the cardboard box; Two of the right blocking members are spaced apart on the fourth guide rail, and at least one is slidable relative to the fourth guide rail, for folding the right side panel of the cardboard box.

4. The cardboard box folding auxiliary device according to claim 3, characterized in that, One of the two rear stops is fixed relative to an adjacent left stop, and the other of the two rear stops is fixed relative to an adjacent right stop.

5. The cardboard box folding auxiliary device according to claim 3, characterized in that, One of the two front blocking members is fixed relative to the third guide rail, and the other of the two front blocking members is fixed relative to the fourth guide rail.

6. The cardboard box folding auxiliary device according to claim 3, characterized in that, One of the two left blocking members adjacent to the rear blocking member has an upwardly protruding first blocking arm for folding the flap at one end of the rear side panel of the carton. One of the two right blocking members adjacent to the rear blocking member has an upwardly protruding second blocking arm for folding the lug at the other end of the rear side panel of the carton; The first stop arm and the left stop member are an integral structure, and the second stop arm and the right stop member are an integral structure.

7. The cardboard box folding auxiliary device according to claim 3, characterized in that, It also includes two limiting arms, one of which is located on the third guide rail and adjacent to the first guide rail, and the other of which is located on the fourth guide rail and adjacent to the first guide rail. Each of the limiting arms is provided with a limiting member for limiting the front side panel of the cardboard box. The limiting member is slidably disposed on the limiting arm, and the limiting member is provided with a second pressing locking member for selectively locking and fixing the limiting member to the limiting arm.

8. The cardboard box folding auxiliary device according to claim 7, characterized in that, The limiting arm includes a vertical section and a horizontal section, which are connected to form an L or T-shaped structure. The horizontal section extends forward in the horizontal direction, and the limiting member is provided on the horizontal section. A guide portion is formed at one end of the horizontal segment adjacent to the rectangular space, which is used to guide the folding ears of the front side panel of the cardboard box for folding.

9. The cardboard box folding auxiliary device according to claim 6, characterized in that, The left blocking member near the first guide rail is provided with an upwardly protruding first guide positioning part, which is relative to the first stop arm to limit a first distance for guiding the left side plate of the paper box to be positioned in the front-back direction; the right blocking member near the first guide rail is provided with an upwardly protruding second guide positioning part, which is relative to the second stop arm to limit a second distance for guiding the right side plate of the paper box to be positioned in the front-back direction.

10. The paper box folding auxiliary device according to claim 3, characterized in that, Each of the two rear blocking members has a support arm pivotally connected to it for supporting the cover of the cardboard box.

11. The paper box folding auxiliary device according to claim 10, characterized in that, An angle limiting structure is provided between the support arm and the rear blocking member to restrict the pivoting of the support arm between the folded position and the unfolded position; When the support arm is in the folded position, the support arm is located inside the rectangular space. When the support arm is in the unfolded position, the support arm is located outside the rectangular space and forms a predetermined support angle.

12. The paper box folding auxiliary device according to any one of claims 1 to 11, characterized in that, The first pressing locking component is a lever-type pressing locking component.

13. The cardboard box folding auxiliary device according to claim 12, characterized in that, The lever-type pressing locking member includes a pivot part and a pressing handle. The pivot part is pivotally connected to the blocking member, and the pivot part has a pressure-applying part that protrudes radially outward. The pressing handle is connected to the pivot part. When the pressing handle is pressed, the pressing part rotates with the pivot part and abuts against the frame to lock and fix the blocking member to the frame.

14. The cardboard box folding auxiliary device according to claim 7, characterized in that, The second pressing locking member has the same structure as the first pressing locking member.

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