A stacking device and method for hygiene products

Abstract

The present invention discloses a stacking device and a stacking method for sanitary products, which relates to the technical field of supply, feeding, arranging or orienting of packaged objects. It includes a conveyor line, and piece placement bins are installed at intervals on the conveyor line; a piece arranging mechanism and a piece pushing mechanism are also installed along the conveying direction of the conveyor line; the piece arranging mechanism includes an angle opening structure and a feeding structure, and the angle opening structure is used to expand the input port of the piece placement bin; the angle opening structure is connected with a driving part, and the driving part drives the angle opening structure to move along the arrangement direction of the piece placement bins on the conveyor line; the feeding structure is provided with an output port matching the movement path of the angle opening structure, and the material is fed through the output port into the blade gap with the angle expanded by the angle opening structure; the piece pushing mechanism is used to push out the material in the piece placement bin. The present invention avoids the skew problem of products during pushing in the prior art through the static pushing method; and solves the production efficiency problem through the dynamic piece arranging method.

Description

Technical Field

[0001] The present invention relates to the technical field of supplying, feeding, arranging or orienting packaged objects, and specifically relates to a stacking device and a stacking method for sanitary products. Background Art

[0002] After disposable sanitary products are formed, they need to be packaged into packaging bags according to specifications, generally including processes such as stacking, compressing, bagging, and sealing. Among them, the quality of product stacking plays a key role in the quality of subsequent compression, bagging, and sealing. With the increase in the speed of production equipment, higher requirements are put forward for the stability of the stacking quality of disposable sanitary products.

[0003] Conventional stacking methods for disposable sanitary products are as follows Figure 1 As shown: The blade 4 forms a stable included angle area 10 at the driven sprocket 2. After the product 9 enters this included angle area 10, the driving sprocket 1 rotates, driving the driven sprocket 2 to rotate to form a new included angle area 10. As the product 9 continuously enters and the driving sprocket 1 continues to rotate, the product 9 steadily and continuously enters between the blades 4. When the product 9 moves towards the driving sprocket 1 at a speed V1 and reaches near the pusher 5, the pusher 5 also moves horizontally towards the driving sprocket 1 at a speed V1, and at the same time pushes the product 9 out at a speed V2. As Figure 2 shown, after the head of the product 9 is pushed out of the blade 4, since the head of the product 9 is no longer under the action of the driving force F1 of the blade 4, its head will be under the action of the frictional force f2 in the opposite direction of the resultant velocity V12 of the velocities V1 and V2. As Figure 3 shown, this frictional force will cause the head of the product 9 to deflect, making the stacked products pushed out as Figure 4 shown, uneven, and there is a possibility of overall deflection of the head, which will seriously affect the implementation of subsequent processes such as compression, bagging, and sealing.

[0004] Based on the above problems, the most direct solution for those skilled in the art is that while the pusher 5 is pushing the material, the blade 4 is in a stationary state (that is, the driving sprocket 1 stops rotating to eliminate the inertia of the product 9 moving along the conveyor line itself); although this method can solve the problem, it will bring new problems. The conveyor line stops working, and the process of realizing included angle sheet arrangement by turning during the movement of the conveyor line also stops immediately. Referring to Figure 1 shown, if the conveyor line stops working, no new included angle area 10 will be generated; in this way, it greatly affects the production rhythm and reduces the production efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a stacking device for sanitary products to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: A stacking device for sanitary products, comprising a conveyor line, on which piece placement bins are installed at intervals; Along the conveying direction of the conveyor line, a piece discharging mechanism and a piece pushing mechanism are also installed;

[0007] The piece discharging mechanism includes an angle expanding structure and a feeding structure. The angle expanding structure is used to expand the input opening of the piece placement bin;

[0008] The angle expanding structure is connected with a driving part, and the driving part drives the angle expanding structure to move along the arrangement direction of the piece placement bins on the conveyor line;

[0009] The feeding structure is provided with an output opening matching the movement path of the angle expanding structure, and materials are fed into the piece placement bin with its input opening expanded by the angle expanding structure through this output opening;

[0010] The piece pushing mechanism is used to push out the materials in the piece placement bin.

[0011] Preferably, blades are installed at intervals on the conveyor line, and adjacent blades enclose to form the piece placement bin

[0012] The angle expanding structure includes an angle expanding surface slidably connected to the conveyor line, and the conveyor line turns at the position where it contacts the angle expanding surface, and the turning direction is towards the side of the blades, so as to expand the included angle between adjacent blades at this position.

[0013] Preferably, the angle expanding structure includes an angle expanding roller slidably connected to the conveyor line.

[0014] Preferably, the angle expanding structure further includes adjusting rollers installed at the input end and / or the output end of the angle expanding roller.

[0015] Preferably, a first adjusting roller is installed at the input end of the angle expanding roller, and a second adjusting roller is installed at the output end of the angle expanding roller. Both the first adjusting roller and the second adjusting roller are located on the side of the conveyor line where the blades are installed, and the first adjusting roller and the second adjusting roller are used to maintain their original conveying trajectories.

[0016] Preferably, the angle expanding structure is installed on a support, and the support is drivingly connected to a slide rail, and the slide rail is arranged along the arrangement direction of the blades.

[0017] Preferably, the feeding structure includes a first driving roller arranged at the input opening and a second driving roller located at the output opening. The first driving roller and the second driving roller are connected by a flexible conveying medium to form a feeding path;

[0018] The second driving roller among them is configured to move synchronously with the angle expanding structure.

[0019] Preferably, the second driving roller and the angle expanding structure are jointly installed on a support, and the support is drivingly connected to a slide rail, and the slide rail is arranged along the arrangement direction of the blades.

[0020] Preferably, a fixed tension roller and an adjustable tension roller are connected between the first driving roller and the second driving roller. The adjustable tension roller is connected with a driving mechanism for adjusting the distance between the adjustable tension roller and the fixed tension roller.

[0021] Preferably, a fixed conveying part is arranged between the second driving roller and the angle structure, and the fixed conveying part forms a fixed feeding path.

[0022] Preferably, the fixed conveying part and the second driving roller are connected through a flexible conveying medium;

[0023] The fixed conveying part includes a transition roller, a first horizontal roller and a second horizontal roller. The first horizontal roller, the second horizontal roller and the second driving roller are at the same horizontal height;

[0024] After the flexible conveying medium starts from the second driving roller and passes through the transition roller, it winds around the first horizontal roller and the second horizontal roller, and the flexible conveying medium forms a feeding path between the first horizontal roller and the second horizontal roller.

[0025] A stacking method for sanitary products includes two steps:

[0026] Dynamic sheet arranging step: The angle structure moves along the blade arrangement direction, and the blade gap angle is enlarged in a polling manner, and the feeding structure conveys the material to the blade gap with the enlarged angle;

[0027] Static pushing step: The pusher mechanism pushes out the material in the blade gap for stacking;

[0028] The dynamic sheet arranging step and the static pushing step are carried out synchronously, and the conveyor belt remains stationary.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] The present invention avoids the skew problem of products during pusher in the prior art through the static pushing method; on this basis, through the dynamic sheet arranging method, the production efficiency problem is solved. That is, while not affecting the static pushing, the sheet arranging process is synchronously realized; in the specific structure, an independently driven angle structure is adopted to assist the dynamic sheet arranging operation, realizing a continuous, uninterrupted and stable processing flow. Description of the Drawings

[0031] Figure 1 It is a schematic diagram of a conventional device in the art introduced in the background art.

[0032] Figure 2 It is a schematic diagram of the motion analysis of the skew problem of the product introduced in the background art Figure 1 。

[0033] Figure 3Schematic diagram of the motion analysis of the skew problem of the product introduced in the background art Figure 2 。

[0034] Figure 4 Schematic diagram of the skew state of the product introduced in the background art.

[0035] Figure 5 Schematic diagram of the overall structure of the solution proposed in the embodiment

[0036] Figure 6 Schematic diagram of a film arranging mechanism in the solution proposed in the embodiment

[0037] Figure 7 Schematic diagram when the solution proposed in the embodiment is in the working state Figure 1 。

[0038] Figure 8 Schematic diagram when the solution proposed in the embodiment is in the working state Figure 2 。

[0039] Figure 9 Schematic diagram of another film arranging mechanism in the solution proposed in the embodiment Detailed implementation manners

[0040] For the convenience of use, an embodiment of the present invention provides a stacking device for sanitary products. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0041] This embodiment provides a stacking device for sanitary products, as shown in reference to Figure 5 shown;

[0042] It includes a conveyor line 3. As shown in the figure, the conveyor line 3 in this embodiment has a chain as the main body, which is wound around three sprockets, including a driving sprocket 1 and a driven sprocket 2;

[0043] Those skilled in the art, in order to meet the production needs, apply conveyor mechanisms of different types (such as chains, chain plates, flexible belts, etc.) and installation methods, which should also be within the protection scope of the "conveyor line" as defined in the present invention.

[0044] It is worth mentioning here that for the convenience of understanding, this embodiment will only be further elaborated in the straight-line segment scenario of the conveyor line 3 between the driving sprocket 1 and the driven sprocket 2, and other related structures (such as driving motors, speed reducers, etc.) will not be elaborated.

[0045] Blades 4 are installed at intervals on the chain. As shown in reference toFigure 5 As shown, the gap between the blades 4 forms a storage space 10 for placing the product 9. Regarding the "product 9", in this embodiment, sanitary products are taken as examples, such as masks, sanitary napkins, diapers, etc.; based on the above concept, sheet-shaped or flat materials are all within the scope of the "product 9", and will not be enumerated one by one here;

[0046] A sheet discharging mechanism and a sheet pushing mechanism 5 are arranged along the conveying direction; as shown in the figure, the sheet discharging mechanism is used to input the product 9 into the storage space 10; the sheet pushing mechanism 5 is arranged at the output end of the sheet discharging mechanism relative to the conveying line 3 and is used to push out the product in the storage space 10 to complete stacking. It is worth mentioning here that regarding the "sheet pushing mechanism", in this embodiment, a way of driving the push head by a power component (cylinder, hydraulic cylinder or electric push rod) on one side of the conveying line 3 is adopted to push out the product; if a person skilled in the art, according to the type of the product 9 and the different application scenarios, replaces this structure with other ways of discharging materials, such as using positive pressure blowing and other methods, it should also be within the scope of the "sheet pushing mechanism" referred to in the present invention;

[0047] Regarding the sheet discharging mechanism; the sheet discharging mechanism includes an angle expanding structure and a feeding structure. Refer to Figure 5 and Figure 6 , the angle expanding structure is used to expand the angle between adjacent blades forming the storage space 10 relative to the feeding structure side (that is, the "angle expansion" referred to in the present invention) so as to facilitate the feeding structure to input the product 9 therein.

[0048] Specific principle and structure of the angle expanding structure: The blades 4 are spaced and installed on the conveying line 3. When the conveying line turns, the orientation of the blades 4 also changes accordingly. When the turning is towards the side of the blades 4, the connecting ends of the blades 4 are squeezed, and the conveying line 3 bulges outwards (that is, the side where the blades 4 are installed). With the assistance of the tension of the conveying line 3 itself, the angle of the blades 4 at the bulging position expands (for easy understanding, refer to the figure, when the blades 4 pass through the sprocket wheel, the angle will also naturally expand).

[0049] Based on the above, the angle expanding structure referred to in this embodiment has an angle expanding surface slidably connected to the conveying line 3. The support of the angle expanding surface enables the conveying line 3 to form the above-mentioned "turning" so as to achieve the purpose of expanding the angle; refer to Figure 6 As shown, specifically in this embodiment, the angle expanding surface is provided by the angle expanding roller 64. The angle expanding roller 64 is a cylindrical roller structure, and its peripheral surface structure is uniform and adapted to the conveying line 3; it is worth mentioning here that the adoption of the cylindrical roller structure shown in the figure in this embodiment does not limit the present invention. If a person skilled in the art makes a conventional replacement, such as replacing the cylindrical roller with other structures such as a structure of guide wheels arranged at intervals or even an irregular body structure to realize the above-mentioned "turning" of the conveying line 3, it should also be within the scope of the "angle expanding structure" and "angle expanding surface" referred to in the present invention.

[0050] Referring to the figure, since the angled structure acts on the conveyor line 3, in order to further improve the stability of the angled structure's "turning" effect on the conveyor line and balance the tension of the conveyor line 3 itself; in another preferred embodiment of the present invention, at either the input end or the output end of the angled roller 64 (i.e., Figure 9 in the case of, or at both the input end and the output end (i.e., Figure 6 in the case of)) an adjusting roller 63 is installed;

[0051] Here, the Figure 6 case is taken as a preferred example for further analysis. Referring to the figure shown, the installation positions of the two adjusting rollers 63 are set relative to the conveyor line with respect to the angled roller 64, and the positions of the three are close to each other, forming a "pin" - shaped structure; at the same time, the two adjusting rollers 63 make the conveyor line tend to maintain its original movement trajectory (i.e., the sides of the two adjusting rollers 63 in contact with the conveyor line 3 and the sides of the sprocket on the same side intersecting the conveyor line 3 are on a straight line); referring to Figure 5 in, the advantage of this design is that, as much as possible, in this state, only one storage space 10 expands the angle, the tension of the conveyor belt 3 is constant, and the stability is higher.

[0052] To implement the angling - expanding process for the blades 4 in a polling manner when the conveyor line 3 is in a stopped state, in this embodiment, the angling - expanding structure is designed to be movably installed. Regarding "polling": in this process, theoretically, the product 9 needs to be sent into the adjacent gaps of each blade 4, so polling should be understood as that the angling structure performs the angling - expanding operation on every two adjacent blades 4 in sequence.

[0053] Regarding "movably installed", the solution of this embodiment refers to Figure 6 shown in the figure, a support 6 and a section of slide rail 61 are provided, and the support 6 is drivingly connected to the slide rail 61 so that the angling - expanding structure can move along with the support 6 on the slide rail 61. Referring to the figure, the extending direction of the slide rail 61 (i.e., the movement path of the angling - expanding structure) is the arrangement direction of the blades 4 and also the direction of the conveyor line.

[0054] It is worth noting here that the "movably installed" in the form of the support 6 - slide rail 61 in this embodiment only provides an implementable solution; if those skilled in the art, under the inventive concept of the present invention, replace this structure with a swing mechanism or other driving structures that keep the angling - expanding structure displaced relative to the conveyor line 3, they should all be within the protection scope of the present invention.

[0055] Based on the above, the angling - expanding structure is connected to a driving structure so that it can displace relative to the relatively stationary conveyor belt 3, thereby actively performing the angling - expanding work on the blades 4;

[0056] During this process, the position where the angle of the horn expands changes, that is, the position of the storage space 10 for the input of product 9 changes with the movement of the horn-expanding structure (to achieve the intermittent feeding of all the blades 4). Moreover, since the sheet discharging mechanism feeds the material while expanding the angle, the "movable installation" of the horn structure must match the corresponding feeding structure.

[0057] Specifically, the feeding structure is provided with an output port that matches the movement path of the horn structure, and the material is fed into the blade gap expanded by the horn structure through this output port.

[0058] Regarding the "output port that matches the movement path of the horn structure", the reason for the need for this output port has also been specifically elaborated above; then what is "matching the path of the horn structure"; refer to Figure 5 As shown, the movement path of the horn structure is necessarily fixed and moves along the conveying direction of the blades. When it reaches a certain position, the angle at that position is expanded; so there are two modes for the output port of the feeding structure;

[0059] One is the fixed type, that is, a number of output ports are arranged along the path of the horn structure, and each output port corresponds to the feeding at one position. Refer to Figure 5 As shown, the set output ports are also arranged at intervals along the direction of the slide rail.

[0060] The second solution is to simplify the structure and have more excellent functionality. The output port is set as a movable structure and moves synchronously with the horn structure, so as to achieve feeding while expanding the angle.

[0061] There are also two options for the synchronous movable structure. One is the independent drive type, that is, a separate drive structure is set to drive the feeding structure, which is configured to move synchronously with the drive structure of the horn structure. The other is to further improve the compactness and mechanical linkage of the equipment, and install the output port and the horn structure on the same drive structure (i.e., the preferred solution shown in the figure).

[0062] First refer to Figure 5 , the feeding structure: includes the first driving roller A at the input port and the second driving roller B at the output port. As shown in the figure, a flexible conveying medium (such as a conveyor belt) is wound between the first driving roller A and the second driving roller B to form a feeding path 7. Two sets of such structures can be arranged vertically and horizontally to play a role in guiding the conveyor belt.

[0063] Combined with the above-mentioned movable structure, and refer to Figure 6, the second driving roller B and the angle structure are installed on the support 6 together, and the direction of the formed output port just faces the storage space 10 to be fed; when the support 6 moves along the slide rail 61, the output port follows the angle structure around the position of the first driving roller A to adjust the angle of the feeding path 7 (the position of the input port is absolutely fixed). During this process, the position of the output port relative to the angle structure is fixed, so the product 9 can be conveyed into the storage space 10 through the fixed output port position.

[0064] During the adjustment of the output port position, in order to ensure the constant tension of the flexible conveying medium, the following settings are made: A fixed tensioning roller 71 and an adjustable tensioning roller 73 are connected between the first driving roller A and the second driving roller B. The adjustable tensioning roller is connected with a driving mechanism 74 (which can adopt an oil cylinder, a cylinder or an electric screw rod, etc.) for adjusting the distance between the adjustable tensioning roller 73 and the fixed tensioning roller 71;

[0065] On the above basis, since the position of the output port relative to the angle structure is relatively fixed, it basically ensures the output of the product 9; however, the angle of the feeding path 7 is variable. In order to ensure the stability of the product input posture and the error tolerance rate, a fixed conveying part is installed between the output port and the angle structure.

[0066] Refer to Figure 5 Or Figure 6 As shown, in order to improve the adaptability of the equipment and the accuracy of conveying, in this embodiment, the fixed conveying part is combined with the feeding structure. Specifically: The fixed conveying part and the second driving roller are connected by a flexible conveying medium;

[0067] The fixed conveying part includes a transition roller C, a first horizontal roller D and a second horizontal roller E, wherein the first horizontal roller D, the second horizontal roller E and the second driving roller B are at the same horizontal height;

[0068] After the flexible conveying medium departs from the second driving roller B and passes through the transition roller C, it winds around the first horizontal roller D and the second horizontal roller E. The flexible conveying medium forms a fixed conveying path 70 between the first horizontal roller D and the second horizontal roller E;

[0069] As shown in the figure, the conveying direction of the fixed feeding path 70 is certain (on the sliding path of the support 6). Even if the angle of the feeding path 7 changes relatively, but through the transition of the fixed conveying path 70, the relative position of the product 9 to the storage space 10 remains constant during this section of the path (that is, as shown in the figure, the fixed conveying path 70 extends horizontally from the output port to the angle structure). In the specific implementation stage, those skilled in the art can adjust the distance of the fixed conveying path relative to the angle structure and the feeding structure to achieve the optimal solution, and no specific restrictions are made on the relevant dimensional parameters here.

[0070] In summary, the above is the specific structure of an embodiment regarding a stacking device for sanitary products. Next, its effect and principle will be further revealed through its stacking method.

[0071] In the initial state: The support 6 (where the output positions of both the angle-opening structure and the feeding structure are located) is at the bottom of the slide rail; the so-called bottom here is the reference Figure 7 state, and it should be understood as the limit position close to the pusher mechanism on the movement path of the support 6; the support 6 remains fixed, and the conveyor line 3 is started and rotates and conveys at a speed of V1 under the action of the sprocket; at this time, relative sliding occurs between the conveyor line 3 and the angle-opening roller 64, so the so-called "polling" angle-opening effect can still be achieved as described above, and the feeding structure continuously feeds, and the products 9 are successively fed into the angle-opening storage space 10. The input speed of the product 9 is V3. In order to meet the coordination of the production rhythm, V1 = R * V3, where R is a constant, depending on the setting of the conveying path. In specific implementation, it can be obtained through multiple production process calibrations.

[0072] The blade 4 with the product 9 is conveyed by the conveyor line to the corresponding pusher position of the pusher mechanism. When the number of the conveyed products 9 meets the set requirements (i.e., the maximum pusher quantity). The conveyor line 3 stops working, and the pusher mechanism pushes out the product 9 in a static state in the storage space 10 at a speed of V2.

[0073] At the same time as this (when the pusher mechanism performs the pushing action), with reference to Figure 7 as shown, the support 6 moves upward along the slide rail at a speed of V1 (in the opposite direction of the position where the pusher mechanism is located). While the support 6 is moving, relative displacement occurs again between the angle-opening mechanism and the conveyor line 3 to achieve the so-called "polling" angle-opening effect, and the feeding structure continuously feeds, and the products 9 are successively fed into the angle-opening storage space 10.

[0074] The displacement of the above support 6 continues until the pusher mechanism completes a pusher cycle. A pusher cycle starts from the execution of the pushing action and ends when it returns to the initial state.

[0075] With reference to Figure 8 as shown, when the pusher mechanism returns to the initial state, the support 6 stops moving in the above direction (i.e., the direction away from the pusher mechanism 5), and at the same time moves in the opposite direction of V4; in this state, the conveyor line 3 moves at a speed of V5, that is, the two satisfy V5 - V4 = V1 to ensure that the products 9 are continuously loaded between the blades 4 in this working state.

[0076] If when the support 6 reaches the initial position, the number of products in the blade 4 reaches the pusher requirement, it enters the next pusher link; if not, the support 6 remains fixed, and the conveyor belt 3 continues to run at a speed of V1 until the pusher requirement is reached, and then enters the next pusher link to realize the working cycle.

[0077] As described above, the pusher operation is performed when the product 9 is in a stationary state, which solves the problem of the head skew of the product 9. At the same time, by using a dynamic sheet discharging mechanism, the effect of uninterrupted sheet discharging operation is achieved under the condition that the conveyor line is stationary, greatly improving the production efficiency.

[0078] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stacking device for sanitary products, comprising a conveyor line, on which piece placing bins are installed at intervals; a sheet discharging mechanism and a sheet pushing mechanism are also installed along the conveying direction of the conveyor line; Characterized in that: The sheet discharging mechanism and the sheet pushing mechanism are arranged on a straight section of the conveyor line; The sheet discharging mechanism includes an angular structure and a feeding structure, and the angular structure is used to expand the input port of the piece placing bin; The angular structure is connected with a driving part, and the driving part drives the angular structure to move along the arrangement direction of the piece placing bins on the conveyor line; The feeding structure is provided with an output port matching the movement path of the angular structure, and materials are fed into the piece placing bin with the input port expanded by the angular structure through the output port; The output port of the feeding structure is arranged as a movable structure and moves synchronously with the angular structure; The sheet pushing mechanism is used to push out the materials in the piece placing bin; A fixed conveying part is installed between the output port and the angular structure. The fixed conveying part is combined with the feeding structure to form a fixed conveying path. The conveying direction of the fixed conveying path is certain. Through the transition of the fixed conveying path, the relative position between the product to be conveyed and the piece placing bin with the input port expanded by the angular structure remains constant during this section of the path.

2. A stacking device for sanitary products according to claim 1, Characterized in that: Blades are installed at intervals on the conveyor line, and adjacent blades enclose a piece placing bin; The angular structure includes an angular surface slidably connected with the conveyor line, and the conveyor line turns at the position where it contacts the angular surface, and the turning direction is towards the side of the blades, so as to expand the angle between adjacent blades at this position.

3. A stacking device for sanitary products according to claim 2, Characterized in that: The angular structure is an angular roller slidably connected with the conveyor line.

4. A stacking device for sanitary products according to claim 3, Characterized in that: The angular structure further includes a first adjusting roller installed at the input end of the angular roller and a second adjusting roller installed at the output end. The first adjusting roller and the second adjusting roller are installed on the side of the conveyor line where the blades are installed, and the first adjusting roller and the second adjusting roller tend to maintain the original conveying track of the conveyor line.

5. A stacking device for sanitary products according to claim 1, Characterized in that: The angular structure is installed on a support, and the support is drivingly connected to a slide rail arranged along the arrangement direction of the blades.

6. A stacking device for sanitary products according to claim 5, Characterized in that: The feeding structure includes a first driving roller arranged at the inlet of the feeding structure and a second driving roller located at the output port. The first driving roller and the second driving roller are connected by a flexible conveying medium to form a feeding path; The second driving roller is configured to move synchronously with the angular structure.

7. A stacking device for sanitary products according to claim 6, Characterized in that: The second driving roller and the angular structure are jointly installed on a support, and the support is drivingly connected to a slide rail arranged along the arrangement direction of the blades.

8. A stacking device for sanitary products according to claim 6 or 7, Characterized in that: A fixed tensioning roller and an adjustable tensioning roller are connected between the first driving roller and the second driving roller. The adjustable tensioning roller is connected with a driving mechanism for adjusting the distance between the adjustable tensioning roller and the fixed tensioning roller.

9. A stacking device for sanitary products according to claim 8, wherein: The fixed conveying part and the second driving roller are connected through a flexible conveying medium; The fixed conveying part includes a transition roller, a first horizontal roller and a second horizontal roller, wherein the first horizontal roller, the second horizontal roller and the second driving roller are at the same horizontal height; After the flexible conveying medium departs from the second driving roller and passes through the transition roller, it winds around the first horizontal roller and the second horizontal roller, and the flexible conveying medium forms a feeding path between the first horizontal roller and the second horizontal roller.

10. A stacking method for sanitary products, wherein: A stacking device for sanitary products according to any one of claims 1-9 is adopted, which includes two steps: Dynamic sheet arranging step of the sheet arranging mechanism: The angular structure moves along the direction of sheet arrangement, polling to expand the input port of the sheet placing bin, and the feeding structure conveys the material to the sheet placing bin with the expanded input port; Static material pushing step of the sheet pushing mechanism: The sheet pushing mechanism pushes out the material in the leaf gap for stacking; The dynamic sheet arranging step and the static material pushing step are carried out synchronously, and the flexible conveying medium remains stationary.

11. A stacking method for sanitary products according to claim 10, wherein: At the initial position, the conveying line moves towards the direction of the sheet pushing mechanism at a speed of V1, and the feeding structure feeds at a speed of V3, and V1 = R * V3, where R is a constant.

12. A stacking method for sanitary products according to claim 10 or 11, wherein: The sheet arranging mechanism and the feeding structure move synchronously.

13. A stacking method for sanitary products according to claim 11, wherein: When the sheet pushing mechanism completes a material pushing operation and returns to the initial state, the conveying line starts to work at a speed of V5, and the sheet arranging mechanism moves towards the direction where the sheet pushing mechanism is located at a speed of V4.

14. A stacking method for sanitary products according to claim 13, wherein: V5 - V4 = V1.

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