Turnover mechanism, material receiving equipment and material receiving method

Abstract

The invention relates to a turn-over mechanism, material receiving equipment and a material receiving method.The turn-over mechanism comprises a conveying structure used for conveying attached paper, the attached paper passes through a turn-over position and a pre-stacking position in the conveying process, the attached paper is provided with an attached bottom paper face and a color printing card paper face which are opposite in the gravity direction, and when the attached paper is located at the turn-over starting position, the attached bottom paper face and the color printing card paper face are overlapped; the laminating bottom paper surface of the laminating paper faces the conveying structure; the turn-over structure can rotate around a turn-over axis relative to the conveying structure, and the direction of the turn-over axis intersects with the first direction and the gravity direction; and the turnover structure is used for lifting the laminating bottom paper surface of the laminating paper at the turnover position and driving the laminating paper to turn over, and the color printing card paper surface of the laminating paper faces the position above the pre-stacking position in the gravity direction and is released when the laminating paper reaches the turnover completion position. Compared with a traditional mode that the attached paper is manually overturned, the overturning mechanism can achieve automatic overturning of the attached paper, and therefore the production efficiency of color box packaging can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of paper packaging printing, and in particular to a turning mechanism, a material receiving device and a material receiving method. Background Art

[0002] Paper packaging products are widely used in all areas of life, such as food, clothing, housing and transportation. Among paper packaging containers, there is an important category - color box packaging. The production process of color box packaging is to print the cardboard in color, and then laminate it with corrugated paper or cardboard and other types of materials that can be used to strengthen paper packaging containers. It is made through die-cutting and gluing processes. The color box produced by laminating paper has color-printed cardboard on the outer surface. Its beautiful appearance is the primary factor in the reputation of the packaging box and its contents, so the entire production process must ensure that the surface of the color-printed cardboard is not scratched or damaged.

[0003] During the lamination process, printed cardboard and corrugated paper are bonded together using adhesive glue. Once the adhesive glue dries, the dense printed cardboard, which serves as the face paper, evaporates slowly, while the looser base paper, which is bonded to the face paper, evaporates quickly. Consequently, the laminated papers warp and bend during the drying process due to their different shrinkage and deformation.

[0004] However, the bending, arching and deformation of the laminated paper is not conducive to or cannot be carried out in the subsequent die-cutting process, so the veneer process will be manually intervened when receiving the material to prevent deformation. At present, the laminated paper is usually stacked with a certain thickness and stacked on the pallet in an orderly manner with the front and back sides facing each other to offset the deformation.

[0005] Therefore, the production process of color box packaging requires flipping the laminated paper. The current mechanism for flipping the laminated paper uses a support surface to support the printed cardboard surface of the flipped laminated paper during the flipping process. Then, a paper pushing mechanism pushes the laminated paper out of contact with the support surface through friction, causing scratches and damage to the printed cardboard surface of the laminated paper, resulting in a low production yield. Alternatively, manual flipping is used, which is time-consuming and labor-intensive, with low flipping efficiency, and is not conducive to improving the production efficiency of color box packaging. Summary of the Invention

[0006] Based on this, it is necessary to provide a turning mechanism, a material receiving device and a material receiving method to address the problems of low production efficiency of qualified paper turning mechanisms and low efficiency of manual turning.

[0007] A turning mechanism, comprising:

[0008] A conveying structure for conveying laminated paper in a first direction, wherein the laminated paper passes through a flipping position and a pre-folding position during conveyance, wherein the laminated paper has a laminated base paper surface and a color printing card paper surface that are opposite to each other along a gravity direction, wherein the gravity direction intersects the first direction, and when the laminated paper is in the flipping position, the laminated base paper surface of the laminated paper faces the conveying structure;

[0009] a flip structure rotatable relative to the conveying structure about a flip axis, wherein the flip axis intersects both the first direction and the direction of gravity;

[0010] The flipping structure is used to lift the laminating bottom paper surface of the laminating paper located at the flipping position, and drive the laminating paper to flip until the color-printed cardboard surface of the laminating paper faces above the pre-stacked position in the direction of gravity and is released.

[0011] In one embodiment, the flip structure has a lifting position and a releasing position that pass through in sequence, and has a lifting surface for lifting the laminated paper;

[0012] When the flip structure is in the lifting position, the lifting surface is parallel to the first direction (X) and contacts the laminating bottom paper surface; when the flip structure is in the releasing position, the lifting surface is parallel to the first direction and faces above the pre-stacked position.

[0013] In one embodiment, the flip structure has an avoidance position during the rotation process. When the flip structure is in the avoidance position, the flip structure avoids the conveying path of the laminated paper.

[0014] In one embodiment, the conveying structure has a conveying surface for conveying the laminated paper along the first direction, and the flip axis is higher than the conveying surface in the direction of gravity;

[0015] When the turning structure is in the avoidance position, the turning structure is higher than the conveying surface, and the height difference between the turning structure and the conveying surface is greater than the thickness of the laminated paper in the direction of gravity.

[0016] In one embodiment, the flip structure includes a lifting body and a rotating body, the lifting body is provided with the lifting surface, the rotating body is installed at an angle on the lifting body, and one end of the rotating body facing away from the lifting body is rotatably installed on the conveying structure around the flip axis;

[0017] When the flipping structure is at the lifting position, the lifting body extends below the paper jam at the flipping position in the direction of gravity.

[0018] In one embodiment, a lifting groove is provided on the conveying structure, and the opening of the lifting groove faces the flipping position. When the flip structure is in the lifting position, the lifting body extends into the lifting groove.

[0019] In one embodiment, the conveying structure has two groups of conveying rollers arranged at intervals along the flipping axis direction, and the lifting groove is formed between the two groups of conveying rollers. Each group of conveying rollers includes a plurality of conveying rollers arranged at intervals along the first conveying direction, and the axis of each conveying roller is parallel to the flipping axis direction.

[0020] In one embodiment, the conveying structure further includes a paper pushing member, and the paper pushing member is disposed on an end of at least one group of conveying rollers in the first direction away from the pre-stacking position.

[0021] In one embodiment, the flip structure further includes a locking assembly, which locks the laminated paper when the flip structure is in the lifting position, and releases the laminated paper when the flip structure is in the releasing position.

[0022] In one embodiment, the flip structure includes a lifting body and a rotating body, the rotating body is installed at an angle on the lifting body, and one end of the rotating body facing away from the lifting body is rotatably installed on the conveying structure around the flip axis;

[0023] The locking assembly includes a first locking member and a second locking member, wherein the first locking member is mounted on the lifting body, and the second locking member is mounted on the rotating body. When the flip structure is in the lifting position, the first locking member and the rotating body are spaced apart along the first direction, and the laminating paper is located between the first locking member and the rotating body.

[0024] The first locking member has a first locking portion that can move relative to itself, and the second locking member has a second locking portion that can move relative to itself. When the locking assembly locks the laminated paper, the first locking portion and the second locking portion are both located on one side of the color-printed cardboard surface of the laminated paper. When the locking assembly releases the laminated paper, the first locking portion and the second locking portion both avoid the color-printed cardboard surface of the laminated paper located on the flip structure.

[0025] In one embodiment, the first locking member includes a support portion mounted on the lifting body, and one end of the first locking portion is movably mounted on the support portion around a locking axis. When the flip structure is in the lifting position, the locking axis is parallel to the direction of gravity, and the longitudinal direction of the first locking portion intersects with the direction of gravity.

[0026] In one embodiment, the support portion can be controllably moved closer to or farther away from the rotating body.

[0027] In one embodiment, the flipping structure further includes a flipping screw rotatable around its own axis, a flipping threaded hole is provided on the support portion, and the flipping screw is threadedly connected to the flipping threaded hole;

[0028] A guide hole is provided on the lifting body, and the support portion is passed through the guide hole. When the flip structure is in the lifting position, the flip screw and the guide hole are both longitudinally extended along the first direction.

[0029] In one embodiment, the second locking member includes a mounting portion, which is mounted on the rotating body. When the flip structure is in the lifting position, the second locking portion is telescopically mounted on the mounting portion along the first direction.

[0030] A material collecting device comprises the turning mechanism as described in any one of the above items.

[0031] In one embodiment, the material receiving device further includes a stacking mechanism and a stacking pallet, and the stacking mechanism is used to transport the laminated paper located at the pre-stacked position to the stacking pallet.

[0032] In one embodiment, the stacking mechanism includes a body and a robot, wherein the body is used to drive the robot to move in a three-dimensional space, and the robot can grasp and release the laminated paper.

[0033] In one embodiment, the manipulator includes a frame and two opening and closing members, the frame is connected to the body so as to move in a three-dimensional space, and the two opening and closing members are spaced apart from the frame along the direction of the rotation axis and can be controlled to move closer to or farther from each other;

[0034] The manipulator further comprises a plurality of hook members, each of the opening and closing members is provided with a plurality of hook members spaced apart along a first direction, one end of each hook member away from the closing member extends longitudinally along the direction of gravity and is provided with a hook portion facing the other opening and closing member.

[0035] In one embodiment, the manipulator further comprises an opening and closing screw provided on the frame, the opening and closing screw being longitudinally elongated along the direction of the rotation axis and being rotatable around its own axis, one end of the opening and closing screw being provided with a first thread segment and the other end being provided with a second thread segment, the first thread segment and the second thread segment having opposite rotation directions;

[0036] Each of the opening and closing members is provided with an opening and closing threaded hole, wherein one of the opening and closing threaded holes is threadedly connected to the first threaded segment, and another of the opening and closing threaded holes is threadedly connected to another of the second threaded segments;

[0037] The frame further comprises a guide rod which is longitudinally extended along the direction of the rotation axis, and the guide rod is slidably connected to the two opening and closing members.

[0038] In one embodiment, a paper suction device is provided on the robot body.

[0039] A material receiving method, based on the material receiving device as described above, comprises the following steps:

[0040] Stack one or more stacks of laminated paper

[0041] When stacking two or more sheets of laminated paper, a spacer sheet will be sucked up;

[0042] Place the interleaving paper on top of two or more stacks of conformable paper;

[0043] Continue stacking and laminating the paper on the interleaving paper.

[0044] In one embodiment, the step of sucking a piece of interlayer paper specifically includes:

[0045] Take the top sheet of laminated paper from the stack of laminated paper and use it as a spacer.

[0046] The above-mentioned flipping mechanism, during the flipping process, can lift the laminating paper in the flipping position to move with the flipping structure, and when the laminating bottom paper surface of the laminating paper on the flipping structure faces the pre-stacked position above the gravity direction Y, the laminating paper has been flipped together with the flipping structure, and the color-printed cardboard surface of the flipped stack of laminating paper faces the color-printed cardboard surface of the pre-stacked stack of laminating paper, so that the color-printed cardboard surfaces of the two stacks of laminating paper are stacked facing each other and overlapped to prevent the color-printed cardboard surface from being scratched, thus forming a new stack of paper. The stacking mechanism then picks them up and stacks them on the cardboard to avoid scratching the color-printed cardboard surface of the laminating paper, which would increase the product scrap rate. Compared with the traditional manual flipping method of laminating paper, it also improves production efficiency. In summary, the flipping mechanism and the material receiving device can protect the color-printed cardboard surface of the laminated paper from scratches and damage, thereby improving the production yield. Furthermore, a single cardboard can be used to stack multiple stacks of laminated paper, thus saving cardboard and occupying less production space. This, in turn, helps improve the production efficiency of color box packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a schematic structural diagram of the material receiving equipment in some embodiments of the present application.

[0048] Figure 2 for Figure 1 Top view of the receiving equipment.

[0049] Figure 3 for Figure 1 Structural schematic diagram of the middle flipping mechanism with the flipping structure in the lifting position.

[0050] Figure 4 for Figure 1 Structural schematic diagram of the middle flip mechanism with the flip structure in the avoidance position.

[0051] Figure 5 for Figure 1 Structural schematic diagram of the middle flip mechanism with the flip structure in the released position.

[0052] Figure 6 for Figure 1 Schematic diagram of the structure of the middle flipping mechanism.

[0053] Figure 7 for Figure 1 Schematic diagram of the structure of the stacking mechanism in the intermediate material receiving equipment.

[0054] Figure 8 for Figure 7 Top view of the stacking mechanism in the intermediate material receiving equipment.

[0055] Figure 9 for Figure 7 Schematic diagram of the structure of the manipulator with stacking mechanism.

[0056] Figure 10 Schematic diagram of the stacking mechanism stacking laminated paper.

[0057] Figure 11 Schematic diagram of the stacking mechanism sucking the interlayer paper.

[0058] Figure 12 Schematic diagram of placing interlayer paper in the stacking mechanism.

[0059] Figure 13 Schematic diagram of the stacking mechanism continuing to stack the laminated paper.

[0060] Figure 14 This is a flow chart of a material receiving method for this application.

[0061] Description of reference numerals:

[0062] Turning mechanism 10: laminating paper 20; laminating bottom paper surface 21; color printing card paper surface 22; discharging device 30; interlayer paper 40;

[0063] Conveying mechanism 100; flipping position 110; pre-stack position 120; conveying surface 130; lifting groove 131; conveying roller 140; paper pusher 150;

[0064] Flip structure 200; lifting surface 201; lifting body 210; rotating body 220; locking assembly 230; first locking member 240; first locking portion 241; supporting portion 242; flip screw 243; flip threaded hole 244; guide hole 245; second locking member 250; second locking portion 251; mounting portion 252; snap-on moving motor 260;

[0065] Stacking mechanism 300; body 310; manipulator 320; frame 321; opening and closing member 322; hook member 323; hook portion 324; opening and closing screw 335; guide rod 340; paper suction device 350; opening and closing motor 360; transmission wheel 361;

[0066] Stacking pallets 400;

[0067] First direction X; gravity direction Y, flip axis direction Z. DETAILED DESCRIPTION

[0068] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0069] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0070] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0071] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0072] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0073] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0074] See Figure 1 and Figure 2The present application provides a material receiving device, wherein the discharging device 30 feeds the laminated laminated paper 20 into the material receiving device for stacking. The material receiving device includes a conveying structure 100 and a flipping mechanism 10. The laminated laminated paper 20 is fed into the flipping mechanism 10 through the discharging device 30. The flipping mechanism 10 includes a conveying structure 100 and a flipping structure 200. The conveying structure 100 is used to convey the laminated paper 20 along a first direction X. The discharging device 30 is arranged at the starting end of the conveying structure 100. The laminated paper 20 output by the discharging mechanism directly enters the conveying structure 100 and continues to be conveyed along the first direction X through the conveying structure 100.

[0075] Among them, the laminated paper 20 has a relative laminated bottom paper surface 21 and a color printed cardboard surface 22. When the laminated paper 20 is located at the flipping position 110, the laminated bottom paper surface 21 of the laminated paper 20 faces the conveying mechanism 100, and the gravity direction Y intersects with the first direction X, that is, the conveying structure 100 conveys the laminated paper 20 horizontally. The color printed cardboard surface 22 and the laminated bottom paper surface 21 of the laminated paper 20 located at the flipping position 110 are the relative top and bottom of the laminated paper 20, respectively, and the bottom of the laminated paper 20 at the flipping position 110 is located on the conveying mechanism 100.

[0076] The flipping structure 200 is rotatable relative to the conveying structure 100 around a flipping axis. The flipping axis direction Z intersects with both the first direction X and the gravity direction Y. The flipping structure 200 is located between the flipping position 110 and the pre-stacked position 120. The flipping structure 200 is used to lift the laminating bottom paper surface 21 of the laminating paper 20 located at the flipping position 110 and drive the laminating paper 20 to flip. When the laminating bottom paper surface 21 of the laminating paper 20 is oriented above the pre-stacked position 120 in the direction of gravity, the laminating structure 200 is released.

[0077] In this way, during the flipping process of the flipping structure 200, the flipping structure 200 can lift the laminated paper 20 located at the flipping position 110 to move together with the flipping structure 200, and when the color-printed cardboard surface 22 of the laminated paper 20 on the flipping structure 200 faces the pre-stacked position 120 and is above the gravity direction Y, the laminated paper 20 has been flipped together with the flipping structure 200, and then the laminated paper 20 returns to the pre-stacked position 120 under the action of gravity.

[0078] In some embodiments of the present application, the flip structure 200 has a lifting position and a release position that pass through in sequence, and has a lifting surface 201 for lifting the laminated paper 20. When the flip structure 200 is in the lifting position, as shown in FIG. Figure 3As shown, the lifting surface 201 is parallel to the first direction X and contacts the laminating bottom paper surface 21 of the laminating paper 20, thereby lifting the laminating paper 20 through the lifting surface 201 and driving the laminating paper 20 to move to the release position. When the flip structure 200 is in the release position, as shown in FIG. Figure 5 As shown, the lifting surface 201 is parallel to the first direction X and faces above the pre-stacked position 120, that is, the lifting surface 201 rotates 180°, and then lifts the laminated paper 20 and rotates 180° together to complete the flipping. At this time, after the flipping structure 200 releases the laminated paper 20, the laminated paper 20 will fall into the pre-stacked position 120 under the action of gravity.

[0079] In some embodiments of the present application, the laminated sheets 20 need to be stacked in an orderly manner with the front and back sides facing up, that is, the flipped sheets 20 are stacked on the unflipped sheets 20. For this purpose, the flip structure 200 also includes a avoidance position during the movement. When the flip structure 200 is in the avoidance position, the flip structure 200 avoids the conveying path of the laminated sheets 20, that is, the laminated sheets 20 can be normally transported to the pre-stacked position 120 through the flip position 110.

[0080] Specifically, when the laminated sheets 20 need to be stacked in an orderly manner, the conveying mechanism 100 can first control the flipping mechanism 200 to move to the avoidance position when conveying the first stack of laminated sheets 20, so that the first stack of laminated sheets 20 is directly conveyed to the pre-stack position 120 without passing through the flipping mechanism 200. When conveying the second stack of laminated sheets 20, the conveying mechanism 100 can first control the flipping mechanism 200 to move to the lifting position to lift the laminated sheets 20, and then control the flipping mechanism 200 to move to the release position. At this time, since the first stack of laminated sheets 20 is already placed on the pre-stack position 120, the second stack of laminated sheets 20 on the flipping mechanism 200 will fall onto the top of the first stack of laminated sheets 20 under the action of gravity, completing the stacking of the laminated sheets 20 and forming a new paper pile. Furthermore, because the first stack of laminated paper 20 is not flipped, while the second stack of laminated paper 20 is flipped 180 degrees by the flipping mechanism 200, the first and second stacks of laminated paper 20 can be stacked with the printed cardboard on their respective laminating surfaces facing each other. This allows the printed cardboard of the laminated paper in the new stack to be oriented toward the center, preventing scratches or damage to the printed cardboard surface when the stacking mechanism carries the new stack to the stacking plate, which would otherwise reduce production yields. This also improves production efficiency.

[0081] In some embodiments, the conveying structure 100 has a conveying surface 130 for conveying the laminated paper 20 along a first direction X, and the flipping axis is higher than the conveying surface 130 in the gravity direction Y, so that the flipping structure 200 can rotate above the conveying surface 130, thereby providing space for the laminated paper 20 to pass through.

[0082] Specifically, when the flip structure 200 is in the flip position 110, the flip structure 200 is higher than the conveying surface 130, and the height between the flip structure 200 and the conveying surface 130 is greater than the thickness of the laminating paper 20 in the gravity direction Y. Figure 3 As shown, the space between the turning structure 200 and the conveying surface 130 can accommodate the laminating paper 20 to pass through, so that the laminating paper 20 can move from the turning position 110 to the pre-folding position 120 .

[0083] Specifically in some embodiments, since the flipping axis of the flipping structure 200 is higher than the conveying surface 130, but the flipping structure 200 needs to rotate to the laminating bottom paper surface 21 of the laminating paper 20 to lift the laminating paper 20, for this purpose, the flipping structure 200 includes a lifting body 210 and a rotating body 220. The rotating body 220 is installed at an angle on the lifting body 210, and the end of the rotating body 220 facing away from the lifting body 210 is rotatably installed on the conveying structure 100 around the flipping axis.

[0084] When the flipping structure 200 is in the lifting position, the lifting body 210 extends below the laminating paper 20 in the flipping position 110 in the gravity direction Y, such as Figure 3 As shown, when the rotating body 220 drives the lifting body 210 to rotate clockwise, the rotating body 220 will lift the laminating paper 20 and make the flip structure 200 enter the avoidance position, as shown in FIG. Figure 4 As shown, at this time, it can be selected whether to continue transporting the laminated paper 20 to the pre-stacked position 120 according to whether there is laminated paper 20 placed on the pre-stacked position 120. Finally, the rotating body 220 drives the lifting body 210 to continue moving, and the flip structure 200 will enter the release position, as shown in FIG. Figure 5 As shown, at this time, the laminated paper 20 falls onto the existing laminated paper 20 that has not been turned over at the pre-stack position 120 under the action of gravity, forming an orderly stacking state of front and back.

[0085] In some embodiments, in order to enable the lifting body 210 to extend into the bottom of the laminated paper 20, a lifting groove 131 is provided on the conveying structure 100, and the opening of the lifting groove 131 faces the flipping position 110. When the flipping structure 200 is in the lifting position, the lifting body 210 extends into the lifting groove 131, so that the lifting body 210 can be located below the laminated paper 20 and thus lift the laminated paper 20.

[0086] Specifically in some embodiments, in order to form a lifting groove 131 on the conveying structure 100 without affecting the conveying structure 100's transportation of the laminated paper 20, the conveying structure 100 has two groups of conveying rollers 140 arranged parallel to the axis of the rotating shaft, and a lifting groove 131 is formed between the two groups of conveying rollers 140. Each group of conveying rollers 140 includes a plurality of conveying rollers 140 arranged at intervals along the first direction X. All conveying rollers 140 form a conveying surface 130 for conveying the laminated paper 20, and the axis of each conveying roller 140 is parallel to the flipping axis direction Z.

[0087] Thus, a lifting groove 131 is formed between the two sets of conveying rollers 140, and the lifting body 210 can extend under the laminating paper 20 through the lifting groove 131, while the other parts of the laminating paper 20 are normally supported by the two sets of conveying rollers 140. When the turning structure 200 is in the flipping position 110, the laminating paper 20 can also be normally conveyed by the two sets of conveying rollers 140. It should be noted that

[0088] Specifically, in some embodiments, the conveying structure 100 further includes a paper pushing member 150, which is disposed on one end of at least one set of conveying rollers 140 away from the pre-stack position 120 in the first direction X. The paper pushing member 150 pushes the laminated paper 20 fed onto the conveying structure 100, allowing the laminated paper 20 to move on the conveying rollers 140. Depending on the pushing distance of the pushing member, the laminated paper 20 can be controlled to stay at the flipping position 110 or the pre-stack position 120.

[0089] In some embodiments of this application, see Figure 6 When the flip structure 200 drives the laminated paper 20 to flip, the laminated paper 20 may fall off the flip structure 200 prematurely during the movement of the flip structure 200, causing the position where the laminated paper 20 falls to change. To this end, the flip structure 200 also includes a locking assembly 230. When the flip structure 200 is in the lifting position, the locking assembly 230 locks the laminated paper 20 to ensure that the laminated paper 20 is fixed to the flip structure 200, preventing the laminated paper 20 from falling off the flip structure 200 when the flip structure 200 is rotated to the release position. When the turning structure 200 rotates to the release position, the locking assembly 230 releases the laminated paper 20, so that the laminated paper 20 can be separated from the turning structure 200 and fall onto the unturned laminated paper 20 on the pre-stacked position 120 under the action of gravity, completing the stacking of the two stacks of laminated paper 20 and the color printed cardboard facing each other, ensuring that the color printed cardboard of the laminated paper is in the center direction of the new stack of paper formed by the new stacking, and the stacking mechanism will not scratch the color printed cardboard when holding and stacking, and will not cause a decrease in the product qualification rate.

[0090] In some embodiments, the flip structure 200 includes a lifting body 210 and a rotating body 220 to lift the laminated paper 20. The rotating body 220 is mounted at an angle to the lifting body 210, and one end of the rotating body 220, facing away from the lifting body 210, is rotatably mounted to the conveying structure 100 about a flip axis. To lock and release the laminated paper 20 by the locking assembly 230, the locking assembly 230 includes a first locking member 240 and a second locking member 250. The first locking member 240 is mounted on the lifting body 210, and the second locking member 250 is mounted on the rotating body 220. When the flip structure 200 is in the lifting position, the first locking member 240 and the rotating body 220 are spaced apart along the first direction X, with the laminated paper 20 located between the first locking member 240 and the rotating body 220.

[0091] The first locking member 240 has a first locking portion 241 that can move relative to itself, and the second locking member 250 has a second locking portion 251 that can move relative to itself. When the locking assembly 230 locks the laminating paper 20, the first locking portion 241 and the second locking portion 251 are both located on one side of the color-printed cardboard surface 22 of the laminating paper 20. Since the laminating bottom paper surface 21 of the laminating paper 20 is lifted by the lifting body 210, the color-printed cardboard surface 22 of the laminating paper 20 is limited by the first locking portion 241 and the second locking portion 251. The laminating paper 20 is limited by two limiting members on both sides of the first direction X. Therefore, when the laminating paper 20 rotates with the turning structure 200, the laminating paper 20 is limited by the first locking member 240, the second locking member 250 and the lifting body 210, and will not fall off the turning structure 200 until the turning structure 200 moves to the release position.

[0092] When the turning structure 200 is in the released position and the release assembly releases the laminated paper 20, the first locking portion 241 and the second locking portion 251 are both located away from the color-printed cardboard surface 22 of the laminated paper 20. That is, the color-printed cardboard surface 22 of the laminated paper 20 is no longer restricted by the two first locking portions 241 and the second locking portions 251. Under the action of gravity, the laminated paper 20 will fall away from the turning structure 200 and finally fall onto the unturned laminated paper 20 at the pre-stacked position 120, completing the stacking of the laminated paper 20.

[0093] Specifically in some embodiments, the first locking member 240 includes a support portion 242 installed on the lifting body 210, and one end of the first locking portion 241 is movably installed on the support portion 242 around a locking axis. When the flip structure 200 is in the lifting position, the locking axis is parallel to the gravity direction Y, and the longitudinal direction of the first locking portion 241 intersects with the gravity direction Y.

[0094] Thus, when the flip structure 200 is in the lifting position, the first locking portion 241 can be controlled to rotate so that the free end of the first locking portion 241 is located on the color-printed cardboard surface 22 of the laminated paper 20. The color-printed cardboard surface 22 of the laminated paper 20 is then locked by the first locking portion 241, preventing the laminated paper 20 from leaving the flip structure 200. When the flip structure 200 is in the releasing position, the first locking portion 241 can be controlled to rotate so that the free end of the first locking portion 241 avoids the color-printed cardboard surface 22 of the laminated paper 20, for example, rotating until the support portion 242 is away from the color-printed cardboard surface 22 of the laminated paper 20, thereby releasing the restriction on the laminated paper 20.

[0095] Furthermore, the support portion 242 can be controlled to move closer to or farther away from the rotating body 220, and by controlling the distance between the support portion 242 and the support of the rotating body 220, the laminated paper 20 can be pressed tightly to avoid relative movement between the laminated paper 20 and the flip structure 200 during rotation, thereby preventing scratches on the laminated paper 20.

[0096] Specifically, the flip structure 200 further includes a flip screw 243 rotatable about its own axis. A flip threaded hole 244 is defined in the support portion 242, and the flip screw 243 is threadedly connected to the flip threaded hole 244. A guide hole 245 is defined in the lifting body 210, and a support member is inserted through the guide hole 245. When the flip structure 200 is in the lifting position, the flip screw 243 and the guide hole 245 are both longitudinally aligned in the first direction X. Thus, when the flip screw 243 rotates, the flip threaded hole 244 converts the rotation of the flip screw 243 into movement of the support portion 242 along the flip screw 243. The guide hole 245 limits the support portion 242 so that it can only move along the flip screw 243 and cannot rotate. Finally, by controlling the forward or reverse rotation of the flip screw 243, the support portion 242 is controlled to move closer to or farther from the rotating body 220. The flipping structure 200 further includes a snap-on moving motor 260 , which is mounted on the supporting body 210 and is used to drive the flipping screw 243 to rotate forward or reverse.

[0097] In some embodiments, the second locking member 250 includes a mounting portion 252 mounted on the rotating body 220. When the flip structure 200 is in the lifting position, the second locking portion 251 is retractably mounted on the mounting portion 252 along the first direction X. Thus, when the second locking portion 251 is extended, the second locking portion 251 can limit the position of the color-printed cardboard surface 22 of the laminated paper 20, thereby cooperating with the first locking member 240 to lock the laminated paper 20. When the second locking portion 251 is retracted, the second locking portion 251 can avoid the color-printed cardboard surface 22 of the laminated paper 20, allowing the laminated paper 20 to normally leave the flip structure 200.

[0098] The present application also provides a material receiving device, which includes a turning mechanism 10 as in any of the above embodiments. Through the above turning mechanism 10, the laminated paper 20 can be automatically turned over, thereby facilitating improving the production efficiency of color box packaging.

[0099] In some embodiments of this application, see Figure 7 and Figure 8 After the laminated paper sheets 20 are stacked in an orderly manner with their front and back faces stacked at the pre-stacking position 120, the stacked laminated paper sheets 20 need to be moved away from the pre-stacking position 120 to facilitate a new round of laminated paper sheet 20 stacking. To this end, the material receiving device further includes a stacking mechanism 300 and a stacking pallet 400. The stacking mechanism 300 is used to move the laminated paper sheets 20 located at the pre-stacking position 120 onto the stacking pallet 400.

[0100] Specifically, whenever two stacks of laminated paper 20 are stacked front and back at the pre-stacking position 120, the stacking mechanism 300 transfers the two stacked stacks of laminated paper 20 together onto the stacked laminated paper 20. Then, when a new round of two stacks of laminated paper 20 are stacked front and back at the pre-stacking position 120, the stacking mechanism 300 transfers the new round of stacked laminated paper 20 onto the stacked laminated paper 20 and stacks them on the previous laminated paper 20, so that multiple layers of laminated paper 20 can be stacked on the stacking pallet for easy transportation.

[0101] In some embodiments, see Figure 8 and Figure 9 The stacking mechanism 300 includes a body 310 and a manipulator 320. The body 310 is used to drive the manipulator 320 to move in a three-dimensional space. The manipulator 320 can grab and release the laminated paper 20, so that the manipulator 320 grabs the laminated paper 20 located at the pre-stacked position 120, transfers the laminated paper 20 to the stacked laminated paper 20, and then releases the laminated paper 20, completing the transfer and stacking of the laminated paper 20.

[0102] Specifically in some embodiments, the manipulator 320 includes a frame 321 and two opening and closing parts 322. The frame 321 is connected to the body 310 to move in three-dimensional space. The two opening and closing parts 322 are arranged at intervals with the frame 321 along the direction of the rotation axis and can be controlled to approach or move away from each other. A hook is provided at one end of each opening and closing part 322 facing away from the frame 321, and the hook of each opening and closing part 322 extends longitudinally toward the other opening and closing part 322.

[0103] The robot 320 further includes a plurality of hook members 323 , each opening and closing member 322 having a plurality of hook members 323 spaced apart along the first direction X. Each hook member 323 extends longitudinally along the gravity direction Y at one end away from the closing member 322 and has a hook portion 324 facing the other opening and closing member 322 .

[0104] Thus, when the manipulator 320 moves to the pre-stacked position 120 and the laminated paper 20 on the pre-stacked position 120 is located between the two opening and closing members 322, the two opening and closing members 322 are controlled to move closer to each other, so that the hook portion 324 of the hook member 323 enters under the laminated paper 20. Then, the manipulator 320 moves upward, and the hook portion 324 lifts the bottom of the laminated paper 20 to achieve the transfer of the laminated paper 20. When the laminated paper 20 moves onto the stacked laminated paper 20, the two opening and closing members 322 are controlled to move away from each other, and the laminated paper 20 falls onto the stacked laminated paper 20, completing the transfer of the laminated paper 20.

[0105] Specifically, the manipulator 320 also includes an opening and closing screw 335 mounted on the frame 321. The opening and closing screw 335 is elongated along the rotation axis and is rotatable about its own axis. One end of the opening and closing screw 335 is provided with a first threaded segment, and the other end is provided with a second threaded segment, with the first and second threaded segments rotating in opposite directions. Each opening and closing member 322 is provided with an opening and closing threaded hole, one of which is threadedly connected to the first threaded segment, and the other opening and closing threaded hole is threadedly connected to the second threaded segment.

[0106] To prevent the opening and closing members 322 from rotating about the screw, the frame 321 further includes a guide rod 340 extending longitudinally along the axis of rotation. The guide rod 340 is slidably connected to the two opening and closing members 322. The guide rod 340 limits the movement of the opening and closing members 322, so that the opening and closing members 322 can only move in the direction of the screw. In this way, by rotating the opening and closing screw 335 forward or backward, the two opening and closing members 322 can be moved closer or further away from each other.

[0107] Specifically, the manipulator 320 also includes an opening and closing motor 360 and two transmission wheels 361 installed on the frame 321. One transmission wheel 361 is connected to the opening and closing motor 360, and the other transmission wheel 361 is connected to the opening and closing screw 335. The two transmission wheels 361 are connected by a belt, thereby transmitting the power of the opening and closing motor 360 to the opening and closing screw 335 to drive the opening and closing screw 335 to rotate forward or reverse.

[0108] In actual use, when two or more stacks of laminated paper 20 are stacked on the stacking cardboard 400, it is often necessary to place a layer of interleaving paper 40 on top of the laminated paper 20 after the laminated paper 20 is stacked to a certain height. The interleaving paper 40 covers the tops of both stacks of laminated paper 20. After stacking laminated paper 20 on top of the two stacks of laminated paper 20, the interleaving paper 40 can cause the two stacks of laminated paper 20 and the newly stacked laminated paper 20 to pull each other to prevent the stacked laminated paper 20 from falling over. Based on this, in some embodiments of the present application, the manipulator 320 is further provided with a paper suction device 350. The paper suction device 350 is used to suck up the interleaving paper 40 and, through the movement of the manipulator 320, place the interleaving paper 40 on the stacked laminated paper 20, and then continue to stack the laminated paper 20.

[0109] The present application also provides a material receiving method, which is based on the above material receiving device and includes the following steps:

[0110] S1: stack one or more stacks of laminated paper;

[0111] Specifically, if Figure 10 As shown, after the robot arm 320 grabs and stacks the laminated paper 20 to a certain height, step S2 may be performed;

[0112] S2: When two or more sheets of laminating paper 20 are stacked, a sheet of interlayer paper 40 is sucked in;

[0113] Specifically, if Figure 11 As shown, a sheet of interlayer paper 40 is sucked by the paper sucker 350 and the interlayer paper 40 is moved.

[0114] S3: placing a layer of interlayer paper on top of two or more stacks of laminated paper 20;

[0115] Specifically, if Figure 12 As shown, the interlayer paper 40 sucked by the sucker is placed on the two stacks of laminated paper 20, so that the two stacks of laminated paper 20 are pulled against each other to prevent them from falling over.

[0116] S4: Continue to stack the laminating paper 20 on the interlayer paper 40 .

[0117] Specifically, if Figure 13 As shown, the laminated paper sheets 20 that continue to be stacked will be entangled with the stacked laminated paper sheets 20 through the interlayer paper 40 to prevent them from falling over.

[0118] In this way, the interlayer paper 40 can cause the two stacks of laminated paper 20 and the newly stacked laminated paper 20 to pull each other to prevent the stacked laminated paper 20 from falling over, so that more laminated paper 20 can be stacked on the stacked laminated paper 20 at one time, thereby improving the transportation efficiency of the laminated paper 20.

[0119] Wherein, step S2 specifically includes:

[0120] A sheet of the topmost sheet of the stack of sheets 20 is sucked as the interlayer paper 40 .

[0121] like Figure 11 As shown, through step S2, there is no need to additionally absorb the interlayer paper 40, and the top layer of the laminated paper 20 in the stack of laminated paper 20 can be directly used as the interlayer paper 40, which not only improves the stacking efficiency but also saves costs.

[0122] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0123] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A turning mechanism, characterized in that: The turning mechanism comprises: A conveying structure (100) is used to convey a laminated paper (20) along a first direction (X), wherein the laminated paper (20) passes through a flipping position (110) and a pre-folding position (120) during the conveying process, wherein the laminated paper (20) has a laminated bottom paper surface (21) and a color printing card paper surface (22) that are opposite to each other along a gravity direction (Y), wherein the gravity direction (Y) intersects with the first direction (X), and when the laminated paper (20) is at the flipping position (110), the laminated bottom paper surface (21) faces the conveying structure (100); The turning structure (200) is rotatable relative to the conveying structure (100) about a turning axis, wherein the turning axis direction (Z) intersects with both the first direction (X) and the gravity direction (Y); The flipping structure (200) is used to lift the laminating bottom paper surface (21) of the laminating paper (20) located at the flipping position (110), and drive the laminating paper (20) to flip until the color-printed cardboard surface (22) of the laminating paper (20) faces above the pre-stacked position (120) in the direction of gravity (Y) and is released.

2. The turning mechanism according to claim 1, characterized in that: The flip structure (200) has a lifting position and a release position that pass through in sequence, and has a lifting surface (201) for lifting the laminated paper (20); When the flip structure (200) is in the lifting position, the lifting surface (201) is parallel to the first direction (X) and contacts the bonding bottom paper surface (21); when the flip structure (200) is in the releasing position, the lifting surface (201) is parallel to the first direction (X) and faces above the pre-stacked position (120).

3. The turning mechanism according to claim 2, characterized in that: The flipping structure (200) has an avoidance position during the rotation process, and when the flipping structure (200) is in the avoidance position, the flipping structure (200) avoids the conveying path of the laminating paper (20); The conveying structure (100) has a conveying surface (130) for conveying the laminated paper (20) along the first direction (X), and the turning axis is higher than the conveying surface (130) in the gravity direction (Y); When the flipping structure (200) is in the avoidance position, the flipping structure (200) is higher than the conveying surface (130), and the height difference between the flipping structure (200) and the conveying surface (130) is greater than the thickness of the laminating paper (20) in the gravity direction (Y).

4. The turning mechanism according to claim 2, characterized in that: The flip structure (200) comprises a lifting body (210) and a rotating body (220), wherein the lifting surface (201) is provided on the lifting body (210), and the rotating body (220) is mounted on the lifting body (210) at an angle, and an end of the rotating body (220) facing away from the lifting body (210) is rotatably mounted on the conveying structure (100) around the flip axis; When the flipping structure (200) is in the lifting position, the lifting body (210) extends below the laminating paper (20) located in the flipping position (110) in the direction of gravity (Y); The conveying structure (100) is provided with a lifting groove (131), the opening of the lifting groove (131) faces the flipping position (110), and when the flipping structure (200) is in the lifting position, the lifting body (210) extends into the lifting groove (131).

5. The turning mechanism according to claim 4, characterized in that: The conveying structure (100) comprises two groups of conveying rollers (140) spaced apart in the flip axis direction (Z), the lifting groove (131) being formed between the two groups of conveying rollers (140), each group of conveying rollers (140) comprising a plurality of conveying rollers (140) spaced apart along the first conveying direction (X), and the axis of each conveying roller (140) being parallel to the flip axis direction (Z); The conveying structure (100) further comprises a paper pushing member (150), wherein the paper pushing member (150) is arranged on an end of at least one group of conveying rollers (140) away from the pre-stack position (120) in the first direction (X).

6. The turning mechanism according to claim 2, characterized in that: The flip structure (200) further includes a locking assembly (230), which locks the laminated paper (20) when the flip structure (200) is in the lifting position, and releases the laminated paper (20) when the flip structure (200) is in the releasing position. The flip structure (200) comprises a lifting body (210) and a rotating body (220), wherein the rotating body (220) is mounted on the lifting body (210) at an angle, and an end of the rotating body (220) facing away from the lifting body (210) is rotatably mounted on the conveying structure (100) around the flip axis. The locking assembly (230) comprises a first locking member (240) and a second locking member (250), wherein the first locking member (240) is mounted on the lifting body (210), and the second locking member (250) is mounted on the rotating body (220); when the flip structure (200) is in the lifting position, the first locking member (240) and the rotating body (220) are spaced apart along the first direction (X), and the laminating paper (20) is located between the first locking member (240) and the rotating body (220); The first locking member (240) has a first locking portion (241) that can move relative to itself, and the second locking member (250) has a second locking portion (251) that can move relative to itself. When the locking assembly (230) locks the laminating paper (20), the first locking portion (241) and the second locking portion (251) are both located on one side of the color-printed cardboard surface (22) of the laminating paper (20). When the locking assembly (230) releases the laminating paper (20), the first locking portion (241) and the second locking portion (251) both avoid the color-printed cardboard surface (22) of the laminating paper located on the flip structure (200).

7. The turning mechanism according to claim 6, characterized in that: The first locking member (240) includes a support portion (242) mounted on the lifting body (210), one end of the first locking portion (241) is movably mounted on the support portion (242) around a locking axis, and when the flip structure (200) is in the lifting position, the locking axis is parallel to the gravity direction (Y), and the longitudinal direction of the first locking portion (241) intersects with the gravity direction (Y); The support portion (242) can be controlled to move closer to or farther from the rotating body (220), and the flip structure (200) further comprises a flip screw (243) rotatable around its own axis. A flip threaded hole (244) is provided on the support portion (242), and the flip screw (243) is threadedly connected to the flip threaded hole (244). A guide hole (245) is provided on the lifting body (210), and the support portion (242) is passed through the guide hole (245). When the flip structure (200) is in the lifting position, the flip screw (243) and the guide hole (245) are both longitudinally extended along the first direction (X); The second locking member (250) includes a mounting portion (252), the mounting portion (252) being mounted on the rotating body (220), and when the flip structure (200) is in the lifting position, the second locking portion (251) is telescopically mounted on the mounting portion (252) along the first direction (X).

8. A material receiving device, characterized in that: comprising a turning mechanism (10) as claimed in any one of claims 1 to 7; The material receiving device further comprises a stacking mechanism (300) and a stacking pallet (400), wherein the stacking mechanism (300) is used to transport the laminated paper (20) located at the pre-stacked position (120) to the stacking pallet (400); The stacking mechanism (300) comprises a body (310) and a manipulator (320), wherein the body (310) is used to drive the manipulator (320) to move in a three-dimensional space, and the manipulator (320) is capable of grasping and releasing the laminated paper (20) located at the pre-stacked position (120); The robot arm (320) is provided with a paper suction device (350).

9. The material receiving device according to claim 8, characterized in that: The manipulator (320) comprises a frame (321) and two opening and closing members (322), wherein the frame (321) is connected to the body (310) to move in a three-dimensional space, and the two opening and closing members (322) are arranged spaced apart from the frame (321) along the direction of the rotation axis and can be controlled to move closer to or farther away from each other; The manipulator (320) further comprises a plurality of hook members (323), each of the opening and closing members (322) being provided with a plurality of the hook members (323) spaced apart along a first direction (X), and each of the hook members (323) having one end away from the closing member (322) extending longitudinally along a gravity direction (Y) and provided with a hook portion (324) facing another opening and closing member (322); The manipulator (320) further comprises an opening and closing screw (335) arranged on the frame (321), the opening and closing screw (335) being longitudinally elongated along the direction of the rotation axis and being rotatable around its own axis, one end of the opening and closing screw (335) being provided with a first thread segment, and the other end being provided with a second thread segment, the first thread segment and the second thread segment having opposite rotation directions; Each of the opening and closing members (322) is provided with an opening and closing threaded hole, wherein one of the opening and closing threaded holes is threadedly connected to the first threaded segment, and another of the opening and closing threaded holes is threadedly connected to another of the second threaded segments; The frame (321) further includes a guide rod (340) extending longitudinally along the direction of the rotation axis, wherein the guide rod (340) is slidably connected to the two opening and closing members (322).

10. A material collecting method, characterized in that: The material receiving device according to claim 8 is characterized in that it includes the following steps: Stack one or more stacks of laminated paper When stacking two or more sheets of laminated paper, a spacer sheet will be sucked up; Place the interleaving paper on top of two or more stacks of conformable paper; Continue stacking and laminating the paper on the interlayer paper; The steps of sucking a piece of interlayer paper specifically include: Take the top sheet of laminated paper from the stack of laminated paper and use it as a spacer.

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