Carton folding apparatus

Abstract

This utility model discloses a cardboard box folding device, including a frame, multiple blocking members, and multiple elevating members. The blocking members are disposed on the frame and define a rectangular space suitable for accommodating the cardboard box. The elevating members are spaced apart around the rectangular space, each elevating member being disposed on the frame or a blocking member and capable of switching between a first position and a second position. When the elevating member is in the first position, the multiple elevating members are located inside the rectangular space and together form a supporting surface to support the bottom surface of the cardboard box. When the elevating member is in the second position, the multiple elevating members are located outside the rectangular space. The cardboard box folding device provided by this utility model, by adding multiple elevating members that can switch between the first and second positions, effectively solves the problem of thin cardboard boxes being difficult to remove after folding. This allows the same folding device to adapt to cardboard boxes of different thicknesses, ensuring effective folding of cardboard boxes of various specifications and facilitating the removal of folded cardboard boxes, thus improving the efficiency of cardboard box folding and the versatility of the device.

Description

Technical Field

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

[0002] Cardboard box folding fixtures typically consist 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] Since the height of the frame in the cardboard box folding fixture is fixed, the distance the cardboard box sinks after being pressed down is the same for cardboard boxes of different thicknesses. Therefore, when folding a cardboard box with a smaller thickness, after the cardboard is pressed down, the entire cardboard box is completely embedded in the frame, making it difficult and laborious to remove the cardboard box, which significantly reduces the efficiency of cardboard box folding. Utility Model Content

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

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

[0006] frame;

[0007] Multiple blocking elements are provided on the frame and define a rectangular space suitable for accommodating the cardboard box;

[0008] Multiple shims are spaced apart around the rectangular space, each shim being disposed on the frame or barrier and capable of switching between a first position and a second position.

[0009] When the shim is in the first position, the plurality of shims are located inside the rectangular space and together form a supporting surface to support the bottom surface of the cardboard box. When the shim is in the second position, the plurality of shims are located outside the rectangular space.

[0010] According to the paper box folding device provided in this embodiment, the problem of thin paper boxes being difficult to remove after folding is effectively solved by adding multiple elevating components that can be switched between a first position and a second position. When folding a thin paper box, the elevating components can be rotated to the first position. At this time, the multiple elevating components together form a supporting surface to support the bottom surface of the paper box, so that the thin paper box will not be completely embedded in the frame when folded and pressed down, but will be stopped above the supporting surface. When it is necessary to fold a thicker paper box, the elevating components can be switched to the second position to restore the original depth of the frame. This adjustable design allows the same folding device to adapt to paper boxes of different thicknesses, ensuring effective folding of paper boxes of various specifications and facilitating the removal of the folded paper boxes, significantly improving the efficiency of paper box folding and the versatility of the device.

[0011] In addition, the paper box folding device according to the above embodiments of the present invention may also have the following additional technical features:

[0012] According to one embodiment of the present invention, the shim is slidably connected to the frame or the blocking member and is slidable between the first position and the second position.

[0013] According to one embodiment of the present invention, the shim is rotatably connected to the frame or the blocking member and is rotatable between the first position and the second position.

[0014] According to one embodiment of the present invention, the shim is disposed at the bottom of the blocking member, and the shim has a first end and a second end, the first end being pivotally connected to the blocking member;

[0015] When the shim is in the second position, the second end is hidden below the blocking member; when the shim rotates from the second position to the first position, the second end rotates out from below the blocking member and is exposed inside the rectangular space.

[0016] According to one embodiment of the present invention, the second end is formed as an upwardly protruding boss, and the bottom of the blocking member has a notch. When the shim is rotated from the first position to the second position, the second end is received in the notch.

[0017] According to one embodiment of the present invention, the shim is provided with a soft pad for contacting the bottom surface of the cardboard box.

[0018] According to one embodiment of the present utility model, there are four shims, two of which are spaced apart on one side of the length direction of the rectangular space, and the other two of which are spaced apart on the other side of the length direction of the rectangular space.

[0019] Alternatively, two of the four raised components are arranged at intervals on one side of the width direction of the rectangular space, and the other two of the four raised components are arranged at intervals on the other side of the width direction of the rectangular space.

[0020] Alternatively, two of the four raised elements are arranged opposite each other along the length of the rectangular space, and the other two of the four raised elements are arranged opposite each other along the width of the rectangular space.

[0021] According to one embodiment of the present invention, at least two of the plurality of blocking members are slidable relative to the frame so that the size of the rectangular space is adjustable;

[0022] Among the plurality of blocking members, the blocking member that is slidable relative to the frame is provided with a locking member for selectively locking and fixing the blocking member to the frame.

[0023] 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;

[0024] 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.

[0025] 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.

[0026] 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;

[0027] 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.

[0028] 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

[0029] 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.

[0030] Figure 1 This is a schematic diagram of the structure of the paper box folding device (with the shim located in the second position) according to an embodiment of the present utility model;

[0031] Figure 2 This is an exploded view of the paper box folding device according to an embodiment of the present invention;

[0032] Figure 3 This is a structural schematic diagram of a paper box folding device (with the shim located in the first position) according to an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the sliding connection between the shim and the blocking part in the paper box folding device of this utility model embodiment;

[0034] Figure 5 This is an exploded view of the sliding connection between the shim and the blocking member in the paper box folding device of this utility model embodiment;

[0035] Figure 6 This is a schematic diagram of the structure of the shim and the blocking part rotating in the paper box folding device of this utility model embodiment;

[0036] Figure 7 This is a side view of the rotating connection between the shim and the blocking member in the paper box folding device of this utility model embodiment.

[0037] Figure label:

[0038] 10. Framework;

[0039] 101. First guide rail;

[0040] 102. Second guide rail;

[0041] 103. Third guide rail;

[0042] 104. Fourth guide rail;

[0043] 20a. Front blocking component;

[0044] 20b. Rear stop;

[0045] 20c, Left blocking component;

[0046] 20d, right blocking component;

[0047] H20, chute;

[0048] H21, Notch;

[0049] 30. Elevating components;

[0050] 301, First end;

[0051] 302, Second end;

[0052] 303, cushion;

[0053] 40. Locking components.

[0054] 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

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] The paper box folding device of this utility model embodiment is described in detail below with reference to the accompanying drawings.

[0061] Reference Figures 1 to 7 As shown, the paper box folding device provided according to the embodiment of the present utility model includes a frame 10, a plurality of blocking members and a plurality of raising members 30.

[0062] 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.

[0063] Multiple blocking elements are disposed on the frame 10, defining a rectangular space suitable for accommodating the cardboard box. Exemplarily, these blocking elements can be disposed on the four sides of the frame 10, with blocking elements on different sides supporting the various side panels of the cardboard box, such as the front side panel, rear side panel, left side panel, and right side panel. The rectangular space is sized to accommodate the bottom panel of the cardboard box to be folded. In use, the cardboard to be folded is placed on the frame 10, with the bottom panel above the rectangular space and each side panel above its respective blocking element. Pressing down on the bottom panel causes it to sink into the rectangular space, and the side panels fold inwards under the support and obstruction of the respective blocking elements.

[0064] Multiple shims 30 are spaced apart around the rectangular space. Each shim 30 is mounted on the frame 10 or the blocking member and can switch between a first position and a second position. When the shim 30 is in the first position, the multiple shims 30 are located inside the rectangular space and together form a supporting surface to support the bottom surface of the cardboard box. When the shims 30 are in the second position, the multiple shims 30 are located outside the rectangular space.

[0065] The number of shims 30 can be determined according to actual needs. For example, one shim 30 can be set at each of the four corners of the rectangular space, or a shim 30 can be set in the middle of each side to provide more even support. Each shim 30 can switch between a first position and a second position. This position switching can be achieved in a variety of ways, such as rotation, translation, or flipping.

[0066] The specific working process of the paper box folding device in this embodiment of the utility model is as follows:

[0067] When folding a thin cardboard box, the operator first rotates all the multiple shims 30 to the first position, extending them into the rectangular space to form a supporting surface. Then, the flattened cardboard is placed on the device, with the bottom plate aligned with the rectangular space, while the side plates rest against the surrounding blocking members. The operator presses down on the bottom plate of the cardboard box, causing it to sink until it is blocked by the supporting surface formed by the shims 30. During this process, the side plates of the cardboard box fold inward under the support and obstruction of the blocking members above, completing the fold. Due to the presence of the supporting surface, the bottom of the folded thin cardboard box is higher than the bottom of the frame 10, and the upper edge of the cardboard box will still be partially exposed above the frame 10, allowing the operator to easily remove it from the device.

[0068] When folding a thick cardboard box, the operator rotates the multiple shims 30 to the second position, completely removing them from the rectangular space. At this point, the flattened cardboard of the box to be folded is placed on the device, its bottom plate suspended directly within the rectangular space defined by the frame 10, with each side plate resting against the blocking components. The operator presses down on the bottom plate, causing it to sink to the bottom of the frame 10 or be supported by the platform on which the device is located, thus utilizing the full depth of the device to complete the folding. Because the thick cardboard box itself has a certain height, its upper edge is also easily removed after folding.

[0069] According to the paper box folding device provided in this embodiment of the present invention, by adding multiple elevating members 30 that can be switched between a first position and a second position, the problem of thin paper boxes being difficult to remove after folding is effectively solved. When folding a paper box with a small thickness, the elevating members 30 can be rotated to the first position. At this time, the multiple elevating members 30 together form a supporting surface to support the bottom surface of the paper box, so that the paper box with a small thickness will not be completely embedded inside the frame 10 when folded and pressed down, but will be stopped above the supporting surface. When it is necessary to fold a thicker paper box, the elevating members 30 can be switched to the second position to restore the original depth of the frame 10. This adjustable design allows the same folding device to adapt to paper boxes of different thicknesses, ensuring effective folding of paper boxes of various specifications and facilitating the removal of the folded paper boxes, significantly improving the efficiency of paper box folding and the versatility of the device.

[0070] Reference Figures 4 to 5 As shown, in one embodiment of this utility model, the shim 30 is slidably connected to the frame 10 or the blocking member and is slidable between the first position and the second position. Exemplarily, to achieve the slidable connection, a groove H20 can be provided on the frame 10 or the blocking member. The groove H20 extends along a direction perpendicular to the edge of the rectangular space. Accordingly, each shim 30 has a slider integrally formed or connected to its bottom that matches the groove H20. For example, the groove H20 can be designed as a T-groove or dovetail groove structure, and the slider of the shim 30 is formed as a corresponding T-shaped protrusion or dovetail protrusion. This mating method ensures that the shim 30 moves smoothly during sliding.

[0071] This embodiment uses a sliding connection to switch the position of the shim 30. This linear reciprocating motion makes the operation very intuitive, simple, and effortless. The cooperation structure between the slide groove H20 and the slider ensures the stability and accuracy of the shim 30 during movement, avoids shaking, and ensures that the supporting surface formed by multiple shims 30 is flatter.

[0072] Reference Figures 6 to 7 As shown, in one embodiment of this utility model, the shim 30 is rotatably connected to the frame 10 or the blocking member and is rotatable between the first position and the second position. Exemplarily, the shim 30 is connected to the frame 10 or the blocking member via a pivot, which can be a pin, a hinge, or other form of rotating shaft. The pivot can be arranged perpendicular to the plane of the frame 10, that is, the axis of the pivot extends vertically.

[0073] By employing a rotating connection, the shim 30 can flexibly switch between a first position and a second position. The operation is simple and intuitive; position adjustment can be completed with just a slight rotation. This design features a compact structure and high mechanical reliability.

[0074] Reference Figures 6 to 7As shown, in one embodiment of this utility model, the shim 30 is disposed at the bottom of the blocking member, and the shim 30 has a first end 301 and a second end 302. The first end 301 is pivotally connected to the blocking member. That is, the first end 301 is pivotally connected to the blocking member, forming a rotation fulcrum, and the second end 302 is a free end, which can rotate freely about the pivot axis of the first end 301.

[0075] When the shim 30 is in the second position, the second end 302 is hidden below the blocking member; when the shim 30 rotates from the second position to the first position, the second end 302 rotates out from below the blocking member and is exposed inside the rectangular space. Exemplarily, the shim 30 can rotate within a range of 0 to 180 degrees, with the 0-degree position corresponding to the second position and the 180-degree position corresponding to the first position. Switching between the first and second positions is achieved by rotating 180 degrees. In other embodiments, the rotation angle of the shim 30 can also be other angles, such as 90 degrees.

[0076] In practical use, when the cardboard box needs to be folded, the operator can use their fingers or tools to pull the second end 302 of the shim 30 out from under the stop. The shim 30 rotates inward around the pivot axis of the first end 301, and the second end 302 gradually rotates out from under the stop and enters the inner side of the rectangular space. During the rotation, the movement trajectory of the shim 30 is arc-shaped. When the shim 30 rotates to the first position, its upper surface is horizontal, and the second end 302 of the shim 30, together with the second ends 302 of other shims 30, forms a supporting surface.

[0077] By placing the shim 30 at the bottom of the stop and using a pivot connection, structural simplification and ease of operation are achieved. When not in use, the shim 30 is completely hidden beneath the stop, occupying no extra space and not affecting the normal operation of the device; when needed, it can be easily adjusted to the working position with a simple rotation, providing reliable bottom support for thin cardboard boxes. This design allows it to accommodate cardboard boxes of varying thicknesses while maintaining the simplicity and compactness of the device's structure.

[0078] To improve the applicability of the device, the shim 30 can be designed as a detachable structure. Through quick-release pins or clips, the shim 30 can be easily removed from the blocking element, facilitating the replacement of different sizes of shims 30 to accommodate a wider range of cardboard box thicknesses. This modular design also facilitates the maintenance and replacement of the shim 30.

[0079] Reference Figures 6 to 7As shown, in one embodiment of the present invention, the second end 302 is formed as an upwardly protruding boss, and the bottom of the blocking member has a notch H21. When the shim 30 rotates from the first position to the second position, the second end 302 is received in the notch H21.

[0080] Through the cooperation between the boss and the notch H21, when the shim 30 reaches the first position, the side wall of the notch H21 provides a precise limit for the boss, ensuring that the shim 30 is in the accurate first position, achieving precise cooperation and reliable positioning between the shim 30 and the blocking member. Furthermore, when the shim 30 rotates to the second position, the boss is housed within the notch H21, providing better concealment, not occupying external space, not interfering with the carton folding operation, and featuring a simple and compact structure.

[0081] Advantageously, the shim 30 is provided with a soft pad 303 for contacting the bottom surface of the cardboard box. This soft pad 303 can be made of EVA, rubber, polyurethane foam, silicone, etc. Using the soft pad 303 effectively reduces the impact force on the bottom surface of the cardboard box during pressing, avoiding indentations, scratches, or damage that may be caused by hard contact, especially for cardboard boxes using printing processes or special surface treatments.

[0082] Reference Figures 1 to 3 As shown, in some embodiments of this utility model, there are four shims 30, two of which are spaced apart on one side of the length direction of the rectangular space, and the other two are spaced apart on the other side of the length direction of the rectangular space.

[0083] Alternatively, two of the four raised members 30 may be arranged at intervals on one side of the width direction of the rectangular space, and the other two of the four raised members 30 may be arranged at intervals on the other side of the width direction of the rectangular space.

[0084] Alternatively, two of the four shims 30 may be arranged opposite each other in the length direction of the rectangular space, and the other two of the four shims 30 may be arranged opposite each other in the width direction of the rectangular space.

[0085] By arranging the four support pieces 30, reliable support can be provided for different types of cardboard boxes. Whether distributed along the length, width, or orthogonally, the four support pieces 30 can form a stable and reliable support surface, ensuring that the cardboard box is evenly supported during folding and avoiding deformation or damage caused by local stress concentration.

[0086] Reference Figures 1 to 3 As shown, in some embodiments of this utility model, at least two of the plurality of blocking members are slidable relative to the frame 10 so that the size of the rectangular space is adjustable.

[0087] Among the plurality of blocking members, the blocking member that is slidable relative to the frame 10 is provided with a locking member 40 for selectively locking the blocking member to the frame 10. The locking member 40 may be a bolt, a press lever type locking member 40, etc.

[0088] In other words, at least two stops on the frame 10 can slide 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. 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 cartons 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 slide grooves H20 or sliding holes.

[0089] The function of the locking element 40 is to reliably fix the blocking element in the predetermined position after it has been adjusted. The locking element 40 can be designed in various forms, and commonly used methods include threaded locking, eccentric locking, wedge locking, and quick clamping.

[0090] In practical use, the operator first loosens the locking element 40 according to the size of the cardboard box to be folded, and then pushes or pulls the sliding blocking element to the appropriate position. After adjustment, the locking element 40 is used to fix the blocking element. The entire adjustment process is simple and quick, greatly improving work efficiency when changing cardboard boxes of different sizes.

[0091] In this embodiment, by configuring a blocking member and a locking member 40 that slide relative to the frame 10, the paper box folding device of this utility model achieves flexible adjustment of the rectangular space size, significantly improving the applicability of the device. This adjustable design allows one device to adapt to various sizes of paper boxes, avoiding the need for multiple dedicated devices for different sized paper boxes, and greatly reducing equipment costs. At the same time, the quick and convenient adjustment operation improves the flexibility and convenience of use.

[0092] Reference Figures 1 to 3 As shown, in some embodiments of this utility model, 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.

[0093] 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 of the cardboard 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 of the cardboard box.

[0094] 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 of the cardboard 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 of the cardboard box.

[0095] 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.

[0096] 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 panel of the cardboard box. The two rear blocking members 20b are used to fold the rear panel of the cardboard box. The two left blocking members 20c are used to fold the left side panel of the cardboard box. The two right blocking members 20d are used to fold the right side panel 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 locking members 40 so that they can be reliably locked and fixed after being adjusted to a suitable position. By adjusting the position of these blocking members, a rectangular space suitable for cardboard boxes of different sizes can be precisely defined, greatly enhancing the universality of the device for different cardboard box specifications.

[0097] 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.

[0098] One of the two rear blocking members 20b is fixed relative to an adjacent left blocking member 20c, and the other of the two rear blocking members 20b is fixed relative to an adjacent right blocking member 20d.

[0099] 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.

[0100] Because the left rear corner of the cardboard box is defined by two relatively fixed rear blocking members 20b and left blocking member 20c, and the right rear corner is defined by two relatively fixed rear blocking members 20b and right blocking member 20d, reliable definition of the two rear corners of the cardboard box is ensured. 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 makes adjustment simpler and more convenient, eliminating the need for independent sliding adjustment of each blocking member. More importantly, this relatively fixed method 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.

[0101] 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.

[0102] 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 apparatus, characterized by, include: frame; Multiple blocking elements are provided on the frame and define a rectangular space suitable for accommodating the cardboard box; Multiple shims are spaced apart around the rectangular space, each shim being disposed on the frame or barrier and capable of switching between a first position and a second position. When the shim is in the first position, the plurality of shims are located inside the rectangular space and together form a supporting surface to support the bottom surface of the cardboard box. When the shim is in the second position, the plurality of shims are located outside the rectangular space.

2. The carton folding apparatus of claim 1, wherein, The shim is slidably connected to the frame or the blocking member and is slidable between the first position and the second position.

3. The carton folding apparatus of claim 1, wherein, The shim is rotatably connected to the frame or the blocking member and is rotatable between the first position and the second position.

4. The carton folding apparatus of claim 1, wherein, The shim is disposed at the bottom of the blocking member, and the shim has a first end and a second end, the first end being pivotally connected to the blocking member; When the shim is in the second position, the second end is hidden below the blocking member; when the shim rotates from the second position to the first position, the second end rotates out from below the blocking member and is exposed inside the rectangular space.

5. The carton folding apparatus of claim 4, wherein, The second end is formed as an upwardly protruding boss, and the bottom of the blocking member has a notch. When the shim is rotated from the first position to the second position, the second end is received in the notch.

6. The carton folding apparatus of claim 1, wherein, The shim is provided with a soft pad for contacting the bottom surface of the cardboard box.

7. The carton folding apparatus of claim 1, wherein, There are four shims, two of which are spaced apart on one side of the rectangular space along its length, and the other two are spaced apart on the other side of the rectangular space along its length. Alternatively, two of the four raised components are arranged at intervals on one side of the width direction of the rectangular space, and the other two of the four raised components are arranged at intervals on the other side of the width direction of the rectangular space. Alternatively, two of the four raised elements are arranged opposite each other along the length of the rectangular space, and the other two of the four raised elements are arranged opposite each other along the width of the rectangular space.

8. The carton folding apparatus of claim 1, wherein, At least two of the plurality of blocking members are capable of sliding relative to the frame to make the size of the rectangular space adjustable; Among the plurality of blocking members, the blocking member that is slidable relative to the frame is provided with a locking member, which is used to selectively lock and fix the blocking member to the frame.

9. The carton folding apparatus of any one of claims 1 to 8, wherein, 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.

10. The carton folding apparatus of claim 9, wherein, 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; 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.

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