CN215207229U - Stacking device for hygienic products - Google Patents

Abstract

The utility model discloses a stacking device for sanitary articles, which relates to the technical field of supply, feeding, arrangement or orientation of packaged articles and comprises a conveying line, wherein sheet placing bins are arranged on the conveying line at intervals; the sheet arranging mechanism and the sheet pushing mechanism are also arranged along the conveying direction of the conveying line; the sheet arranging mechanism comprises an opening angle structure and a feeding structure, and the opening angle structure is used for expanding an input port of the sheet placing bin; the opening angle structure is connected with a driving part, and the driving part drives the opening angle structure to move on the conveying line along the arrangement direction of the sheet placing bins; the feeding structure is provided with an output port matched with the movement path of the opening angle structure, and materials are fed into the chip placing bin of the expanded input port of the opening angle structure through the output port; and the sheet pushing mechanism is used for pushing the materials in the sheet placing bin out. The utility model avoids the problem of skew of the product during pushing material in the prior art by a static pushing mode; on the basis, the problem of production efficiency is solved by a dynamic sheet arrangement mode.

Description

Stacking device for hygienic products

Technical Field

The utility model relates to a supply with, the advance of packing article, range or directional technical field specifically are a be used for health supplies bunching device.

Background

After the disposable sanitary products are formed, the disposable sanitary products need to be packed into a packing bag according to specifications, and the process is generally divided into the procedures of stacking, compressing, bag feeding, bag sealing and the like. Wherein, the quality of the stacking of the products plays a key role in the quality of subsequent compression, bag feeding and sealing. With the speed increase of production equipment, higher requirements are put on the stability of the stacking quality of the disposable sanitary products.

The conventional stacking method of disposable hygienic articles is shown in fig. 1: blade 4 forms at driven sprocket 2 and stabilizes field angle region 10, and product 9 gets into this field angle region 10 back, and drive sprocket 1 is rotatory, drives driven sprocket 2 rotatory formation new field angle region 10, along with the continuous entering of product 9 and the continuous rotation of drive sprocket 1, the stable entering blade 4 that lasts of product 9 is between. When the product 9 moves in the direction of the drive sprocket 1 at a speed V1 to the vicinity of the pusher head 5, the pusher head 5 also traverses in the direction of the drive sprocket 1 at a speed V1 while pushing the product 9 out at a speed V2. After the head of the product 9 has been pushed out of the blade 4, as shown in fig. 2, the head of the product 9 will be subjected to a friction force F2 in the opposite direction to the speed V1, V2 combined with the speed V12, since the head of the product 9 is no longer subjected to the pushing force F1 of the blade 4. As shown in fig. 3, the friction force will cause the head of the product 9 to deflect, so that the entire stack of pushed-out products will be uneven as shown in fig. 4, and the head may deflect as a whole, which may seriously affect the implementation of the subsequent processes such as compressing, bagging, sealing, etc.

Based on the above problems, the most direct solution of the technical personnel in the field is that the blade 4 is in a static state (i.e. the driving chain wheel 1 stops rotating to eliminate the inertia of the product 9 moving along the conveying line) while the pushing head 5 pushes the material; although the method can solve the problems, the method brings new problems that the conveying line stops working and the process of realizing flare angle sheet arrangement depending on the turning of the conveying line in the process of advancing also stops immediately. Referring to fig. 1, if the conveyor line stops working, a new flare angle area 10 is not generated; therefore, the production beat is greatly influenced, and the production efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be used for health supplies bunching device to solve the problem that proposes among the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: a stacking device for hygienic products comprises a conveying line, wherein sheet placing bins are arranged on the conveying line at intervals; the sheet arranging mechanism and the sheet pushing mechanism are also arranged along the conveying direction of the conveying line;

the sheet arranging mechanism comprises an opening angle structure and a feeding structure, and the opening angle structure is used for expanding an input port of the sheet placing bin;

the opening angle structure is connected with a driving part, and the driving part drives the opening angle structure to move on the conveying line along the arrangement direction of the sheet placing bins;

the feeding structure is provided with an output port matched with the movement path of the opening angle structure, and materials are fed into the chip placing bin of the expanded input port of the opening angle structure through the output port;

and the sheet pushing mechanism is used for pushing the materials in the sheet placing bin out.

Preferably, blades are arranged on the conveying line at intervals, and adjacent blades are arranged in a surrounding mode to form a slice storage bin

The opening angle structure comprises an opening angle surface which is connected with the conveying line in a sliding mode, and the conveying line is turned at the position where the conveying line is contacted with the opening angle surface, the turning direction is towards one side of the blade, and therefore the opening angle of the adjacent blade at the position is enlarged.

Preferably, the flare angle structure comprises a flare angle roller which is connected with the conveying line in a sliding mode.

Preferably, the flare angle structure further comprises a regulating roller arranged at the input end and/or the output end of the flare angle roller.

Preferably, the first adjusting roller is installed at the input end of the angle roller, the second adjusting roller is installed at the output end of the angle roller, the first adjusting roller and the second adjusting roller are both located on one side of the conveying line where the blades are installed, and the first adjusting roller and the second adjusting roller are used for maintaining the original conveying track.

Preferably, the flare angle structure is installed on the support, and the support drive is connected on the slide rail, and the slide rail sets up along the blade direction of arranging.

Preferably, the feeding structure comprises a first driving roller arranged at the input port and a second driving roller arranged at the output port, and the first driving roller and the second driving roller are connected by adopting a flexible conveying medium, so that a feeding path is formed;

wherein the second driving roller is configured to move synchronously with the opening angle structure.

Preferably, the second driving roller and the opening angle structure are installed on the support together, the support is connected to the sliding rail in a driving mode, and the sliding rail is arranged along the blade arrangement direction.

Preferably, a fixed tensioning roller and an adjustable tensioning roller are connected between the first transmission roller and the second transmission roller, and the adjustable tensioning roller is connected with a driving mechanism for adjusting the distance between the adjustable tensioning roller and the fixed tensioning roller.

Preferably, a fixed conveying part is arranged between the second driving roller and the opening angle structure, and the fixed conveying part forms a section of fixed feeding path.

Preferably, the fixed conveying part is connected with the second transmission roller through a flexible conveying medium;

the fixed conveying part comprises a transition roller, a first horizontal roller and a second horizontal roller, wherein the first horizontal roller, the second horizontal roller and the second transmission roller are positioned at the same horizontal height;

after the flexible conveying medium starts from the second driving roller and passes through the transition roller, the flexible conveying medium winds around the first horizontal roller and the second horizontal roller, and a feeding path is formed between the first horizontal roller and the second horizontal roller.

A method of stacking sanitary products, comprising the steps of:

and (3) dynamic piece arranging: the opening angle structure moves along the blade arrangement direction, the opening angle of the blade gap is expanded in a polling mode, and the feeding structure conveys materials to the blade gap with the expanded opening angle;

static material pushing step: the blade pushing mechanism pushes the materials in the blade gaps out of the stack;

the dynamic sheet arranging step and the static material pushing step are carried out synchronously, and the conveying belt keeps static.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model avoids the problem of skew of the product during pushing material in the prior art by a static pushing mode; on the basis, the problem of production efficiency is solved by a dynamic sheet arrangement mode. Namely, the sheet arranging process is synchronously realized while static pushing is not influenced;

in the concrete structure, the independent driving opening angle structure is adopted to assist the dynamic sheet arranging operation, and the continuous, uninterrupted and stable processing flow is realized.

Drawings

Fig. 1 is a schematic diagram of a conventional apparatus of the art as described in the background.

Fig. 2 is a first diagram of motion analysis of the skew problem of the product introduced in the background art.

Fig. 3 is a schematic diagram of motion analysis of the skew problem of the product introduced in the background art.

Fig. 4 is a schematic diagram of a skew state of a product introduced in the background art.

FIG. 5 is a schematic diagram of the overall structure of the proposed embodiment.

FIG. 6 is a schematic view of a sheet aligning mechanism according to an embodiment.

FIG. 7 is a diagram illustrating a first exemplary embodiment of the present disclosure in an operating state.

FIG. 8 is a diagram illustrating a second exemplary embodiment of the present invention in an operating state.

FIG. 9 is a schematic view of another sheet aligning mechanism according to the embodiment.

Detailed Description

In order to facilitate the use, the embodiment of the utility model provides a be used for health supplies bunching device. The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment provides a stacking device for sanitary products, which is shown in figure 5;

the conveying line comprises a conveying line 3, and as shown in the figure, the conveying line 3 is called in the embodiment, the main body of the conveying line is a chain, and the conveying line is wound on three chain wheels, and comprises a driving wheel 1 and a driven wheel 2;

those skilled in the art should also be able to apply different types (such as chain, chain plate, flexible belt, etc.) and installation modes of the conveying mechanism to meet the production requirements within the protection scope of the present invention.

It should be noted that, for convenience of understanding, the present embodiment is further described only in a scene of a straight-line segment of the conveying line 3 between the driving wheel 1 and the driven wheel 2, and other related structures (such as the driving motor and the speed reducer) are not described in detail.

Blades 4 are mounted at intervals on the chain, and as shown in fig. 5, the gaps of the blades 4 form storage spaces 10 for products 9 to be inserted. Regarding "product 9", the present embodiment takes sanitary products, such as masks, sanitary napkins, diapers, etc.; based on the above concept, the materials in sheet or flat shape are all in the scope of "product 9", and are not exhaustive here;

a sheet arranging mechanism and a sheet pushing mechanism 5 are arranged along the conveying direction;

referring to the drawings, the sheet discharge mechanism is used to input the products 9 into the storage space 10; the sheet pushing mechanism 5 is arranged at the output end of the sheet arranging mechanism relative to the conveying line 3 and used for pushing out the products in the storage space 10 to complete stacking. It should be noted here that, regarding the "push sheet mechanism", the present embodiment adopts a mode that the push head is driven by a power component (an air cylinder, a hydraulic cylinder or an electric push rod) on one side of the conveying line 3 to push out the product; if the person skilled in the art, according to the kind of product 9 and the difference of application scene, replace this structure with the ejection of compact of other modes, for example adopt positive pressure to blow modes such as material should also be in the scope of the so-called "push jack mechanism" of the utility model;

regarding the sheet arranging mechanism; the sheet arranging mechanism includes an opening angle structure and a feeding structure, and referring to fig. 5 and 6, the opening angle structure is used for enlarging an included angle between adjacent blades forming the storage space 10 relative to one side of the feeding structure (i.e. the utility model is called as "angle enlargement") so that the feeding structure can input the product 9 into the feeding structure.

The specific principle and structure of the opening angle structure are as follows: the blades 4 are installed on the conveying line 3 at intervals, when the conveying line turns, the orientation of the blades 4 is changed immediately, when the turning is towards one side of the blades 4, the connecting end of the blades 4 is extruded, the conveying line 3 protrudes towards the outer side (namely, the side provided with the blades 4), and under the assistance of the tension of the conveying line 3, the opening angle of the blades 4 at the protruding position is enlarged (for the convenience of understanding, in the reference figure, the opening angle of the blades 4 is naturally enlarged when the blades pass through a chain wheel).

Based on the above, the angle expanding structure of the present embodiment includes an opening angle surface slidably connected to the conveying line 3, and the opening angle surface supports the conveying line 3 to form the above-mentioned "turning" so as to achieve the purpose of expanding the opening angle;

referring to fig. 6, in particular to the embodiment, the flare angle surface is provided by a flare angle roller 64, the flare angle roller 64 is a cylindrical roller structure, and the circumferential surface structure of the cylindrical roller structure is uniform and is matched with the conveying line 3; it should be noted here that, in the embodiment, it is shown in the drawings that the cylindrical roller-shaped structure cannot play a limiting role in the present invention, if the conventional replacement is performed by those skilled in the art, for example, the cylindrical roller is replaced by another structure such as a guide wheel structure 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 so-called "open angle structure" or "open angle surface".

In the figure, the conveying line 3 is acted by the flare angle structure, so that the stability of the flare angle structure on the steering action of the conveying line is further improved, and the tension of the conveying line 3 is balanced; in another preferred embodiment of the present invention, the steering roller 63 is installed at either one of the input end or the output end of the field angle roller 64 (i.e., the case of fig. 9, or at both of the input end and the output end (i.e., the case of fig. 6);

here, the case of fig. 6 is taken as a preferred example, and further analysis is performed, and as shown in the figure, the mounting positions of the two steering rollers 63 and the field angle roller 64 are arranged relative to the conveying line, and the positions of the three are close to each other, so that a structure in the shape of a Chinese character 'pin' is formed; meanwhile, the two adjusting rollers 63 enable the conveying line to have a tendency of keeping the original movement track (namely, the edges of the two adjusting rollers 63 contacting the conveying line 3 and the edges of the same sides of the chain wheels, which intersect with the conveying line 3, are positioned on a straight line); referring to fig. 5, the advantage of this design is that only one storage space 10 is expanded in this state, the tension of the conveyor belt 3 is constant, and the stability is higher.

In order to realize that the opening angle of the blade 4 is enlarged in a polling mode in the stop state of the conveying line 3, the enlarging angle structure is movably arranged in the embodiment. With respect to "polled": in this procedure, it is theoretically necessary to feed the product 9 into the adjacent gap of each blade 4, so the polling type should be understood as that the opening angle structure sequentially performs the opening angle enlarging operation for each two adjacent blades 4.

Regarding the "movable installation", the solution of the present embodiment is shown in fig. 6, a support 6 is provided, and a length of slide rail 61 is provided, the support 6 is drivingly connected to the slide rail 61, so that the angle-expanding structure can follow the support 6 to run on the slide rail 61. The extending direction of the slide rail 61 (i.e. the moving path of the angle-expanding structure) shown in the figure is the arrangement direction of the blades 4, and is also the direction of the conveying line.

It is worth integrating here that the "mobile mounting" of the support 6-slide 61 type of the present embodiment is only intended to provide a solution that can be implemented; if the technical staff in this field is in the utility model's conception, it should be within the scope of the utility model to replace this structure with swing mechanism or other drive structures that keep the angle expanding structure to produce relative displacement on transfer chain 3.

Based on the above, the angle-expanding structure can be displaced relative to the static conveying belt 3 by connecting the driving structure, so that the opening angle expansion work of the blade 4 is actively carried out;

in the process, the position of the flare angle enlargement is changed, namely, the position of the storage space 10 to be fed with the product 9 is changed along with the movement of the flare angle structure (the interval polling type feeding of all the blades 4 is realized). And because the sheet arranging mechanism carries out feeding operation while expanding the angle, the movable installation of the opening angle structure must be matched with the corresponding feeding structure.

Specifically, the feeding structure is provided with an output port matched with the movement path of the opening angle structure, and materials are fed into the blade gap with the opening angle expanded by the opening angle structure through the output port;

with regard to the "outlet opening adapted to the path of movement of the angular structure", it has also been explained in detail in the above description why this outlet opening is required; what is then "matched to the flare structure path"; referring to fig. 5, the movement path of the flare angle structure is necessarily fixed, and the flare angle structure moves along the conveying direction of the blade to reach which position, and the flaring angle processing is performed on which position; the output port of the feeding structure can have two modes;

firstly, fixed, set up a plurality of delivery outlets along the route of this opening angle structure promptly, every delivery outlet corresponds the feeding in a position, refer to fig. 5, and the delivery outlet that sets up is the same along the direction interval setting of slide rail.

The second scheme is that in order to simplify the structure and make the function more excellent, the output port is set to be a movable structure and moves synchronously with the opening angle structure, so that feeding is performed at the same time of opening angle.

The synchronous movable structure can also have two options, namely, the synchronous movable structure is independently driven, namely, a driving structure is independently arranged to drive the feeding structure and is configured to synchronously move with the driving structure of the opening angle structure. Secondly, in order to further improve the compactness and the mechanical linkage of the equipment, the output port and the flare angle structure are arranged on the same driving structure (namely the preferred scheme shown in the figure).

Referring to fig. 5, the feeding structure: including a first drive roller a at the input port and a second drive roller B at the output port, and as shown in the figure, a flexible conveyance medium (e.g., a conveyor belt) is wound between the first drive roller a and the second drive roller B to form a feeding path 7. The structure can be provided with two groups which are distributed up and down. To act as a guide for the conveyor belt.

With the combination of the mobile structure and with reference to fig. 6, the second driving roller B is mounted on the support 6 together with the flare angle structure, and the direction of the formed output port of the second driving roller B just faces the storage space 10 to be fed; when the support 6 moves along the slide 61, the outlet follows the angular position of the feed path 7 around the position of the first drive roller a (the position of the inlet is absolutely fixed), in the process of which the position of the outlet relative to the angular position is fixed, so that the product 9 can be fed into the storage space 10 via this fixed outlet position.

In the process of adjusting the position of the output port, in order to ensure constant tension of the flexible conveying medium, the following settings are carried out: a fixed tension roller 71 and an adjustable tension roller 73 are connected between the first transmission roller A and the second transmission roller B, and the adjustable tension roller is connected with a driving mechanism 74 (an oil cylinder, an air cylinder or an electric screw rod and the like can be adopted) for adjusting the distance between the adjustable tension roller 73 and the fixed tension roller 71;

on the basis of the above, the output of the product 9 is substantially ensured, since the position of the output opening relative to the flare structure is relatively fixed; however, the angle of the feed path 7 is varied. In order to ensure the stability of the input posture of the product and the fault-tolerant rate, a section of fixed conveying part is arranged between the output port and the flare angle structure.

Referring to fig. 5 or fig. 6, in order to improve the adaptability of the apparatus and the accuracy of the conveying, the present embodiment combines the fixed conveying portion with the feeding structure, specifically: the fixed conveying part is connected with the second transmission roller through a flexible conveying medium;

the fixed conveying part comprises 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 transmission roller B are positioned at the same horizontal height;

after the flexible conveying medium starts from the second driving roller B and passes through the transition roller C, the flexible conveying medium winds around the first horizontal roller D and the second horizontal roller E, and a fixed conveying path 70 is formed between the first horizontal roller D and the second horizontal roller E;

referring to the figures, the fixed feed path 70 is in a fixed direction of transport (in the sliding path of the support 6). The angle of the feed path 7 changes relatively, but the relative position of the products 9 to the storage space 10 remains constant in the transition through the fixed transport path 70 (i.e., in the figure, the fixed transport path 70 extends horizontally from the delivery opening to the flare structure). In the implementation stage, a person skilled in the art can adjust the distance between the fixed conveying path and the feeding structure to achieve an optimal solution, and the relevant dimension parameters are not particularly limited herein.

In summary, the present embodiment relates to a specific structure of a stacking device for hygienic products, and the effects and principles thereof are further disclosed by the stacking method.

In the initial state: the support 6 (the opening angle structure and the output port position of the feeding structure are both positioned on the support) is positioned at the bottommost part of the slide rail; the bottommost portion referred to herein is the state referred to in fig. 7, and should be understood to be the extreme position on the path of movement of the support 6 near the blade pushing mechanism; the support 6 is kept fixed, and the conveying line 3 is started and rotationally conveyed at the speed of V1 under the action of a chain wheel; at this time, the conveying line 3 and the flare angle roller 64 slide relatively, so that the "polling" flare angle effect can still be realized, and the feeding structure continuously feeds the products 9 into the storage space 10 of the flare angle in sequence. The speed of the input of the product 9 is V3, and in order to satisfy the coordination of the production cycle, V1 ═ R × V3, where R is a constant, depending on the setting of the transport path, the production cycle can be calibrated multiple times in the specific implementation.

The blade 4 with the product 9 is transported by the transport line to the pusher position corresponding to the pusher mechanism. When the number of products 9 delivered meets the set requirement (i.e. the maximum amount of push-pieces). The feed line 3 stops working and the pusher mechanism pushes out the products 9 at rest in the storage space 10 at a speed of V2.

Simultaneously with this (the ejector mechanism performs the ejecting action), as shown in fig. 7, the holder 6 moves upward along the slide rail at a speed of V1 (reverse of the position where the ejector mechanism is located). When the support 6 moves, the opening angle mechanism and the conveying line 3 generate relative displacement again, so that the so-called 'polling type' opening angle effect is achieved, the feeding structure continuously feeds materials, and the products 9 are sequentially fed into the storage space 10 of the opening angle.

The displacement of the support 6 is continued until the sheet pushing mechanism completes one sheet pushing period, wherein the one sheet pushing period is started by the execution of the pushing action and is ended by the return to the initial state.

Referring to fig. 8, when the blade pushing mechanism returns to the initial state, the support 6 stops moving in the above direction (i.e. the direction away from the blade pushing mechanism 5) and simultaneously moves in the reverse direction of V4; in this state, the conveyor line 3 is at a speed of V5, i.e. both satisfy V5-V4-V1, to ensure a continuous loading of the products 9 between the blades 4 in this operating state.

If the support 6 reaches the initial position and the number of the products in the blade 4 meets the blade pushing requirement, the next blade pushing link is started; if the requirement is not met, the support 6 is kept fixed, the conveyor belt 3 is kept to continue to run at the speed of V1 until the requirement of the push piece is met, and the next push piece link is started to realize the working cycle.

In summary, the stacking method performs the sheet pushing operation under the static state of the product 9, solves the problem that the head of the product 9 is inclined, and meanwhile, realizes the effect of uninterrupted sheet arranging operation under the static condition of the conveying line by using the dynamic sheet arranging mechanism, thereby greatly improving the production efficiency.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A stacking device for hygienic products comprises a conveying line, wherein sheet placing bins are arranged on the conveying line at intervals; the sheet arranging mechanism and the sheet pushing mechanism are also arranged along the conveying direction of the conveying line;

the method is characterized in that: the sheet arranging mechanism comprises an opening angle structure and a feeding structure, and the opening angle structure is used for expanding an input port of the sheet placing bin;

the opening angle structure is connected with a driving part, and the driving part drives the opening angle structure to move on the conveying line along the arrangement direction of the sheet placing bins;

the feeding structure is provided with an output port matched with the movement path of the opening angle structure, and materials are fed into the chip placing bin of the expanded input port of the opening angle structure through the output port;

and the sheet pushing mechanism is used for pushing the materials in the sheet placing bin out.

2. A stacking device for hygienic products, as defined in claim 1, wherein: blades are arranged on the conveying line at intervals, and adjacent blades are arranged in a surrounding mode to form a slice placing bin;

the opening angle structure comprises an opening angle surface which is connected with the conveying line in a sliding mode, and the conveying line is turned at the position where the conveying line is contacted with the opening angle surface, the turning direction is towards one side of the blade, and therefore the opening angle of the adjacent blade at the position is enlarged.

3. The stacking device for hygienic products of claim 2, wherein: the flare angle structure is a flare angle roller which is connected with the conveying line in a sliding way.

4. A stacking device for hygienic products, as defined in claim 3, wherein: the opening angle structure further comprises an adjusting roller arranged at the input end and/or the output end of the opening angle roller, the adjusting roller is arranged on one side of the conveying line where the blades are arranged, and the first adjusting roller and the second adjusting roller have the tendency of maintaining the original conveying track of the conveying line.

5. A stacking device for hygienic products, as defined in claim 1, wherein: the flare angle structure is installed on the support, and the support drive is connected on the slide rail, and the slide rail sets up along the blade direction of arranging.

6. A stacking device for hygienic products, as defined in claim 1, wherein: the feeding structure comprises a first driving roller arranged at the input port and a second driving roller arranged at the output port, and the first driving roller and the second driving roller are connected by adopting a flexible conveying medium, so that a feeding path is formed;

wherein the second driving roller is configured to move synchronously with the opening angle structure.

7. The stacking device for hygienic products of claim 6, wherein: the second driving roller and the opening angle structure are installed on the support together, the support is connected to the sliding rail in a driving mode, and the sliding rail is arranged along the blade arrangement direction.

8. A stacking device for sanitary products, according to claim 6 or 7, characterised in that: fixed tensioning roller and adjustable tensioning roller are connected between first driving roller and the second driving roller, and adjustable tensioning roller is connected with actuating mechanism for adjust the interval of adjustable tensioning roller and fixed tensioning roller.

9. A stacking device for hygienic products, as defined in claim 7, wherein: a fixed conveying part is arranged between the second transmission roller and the opening angle structure, and the fixed conveying part forms a section of fixed feeding path.

10. A stacking device for hygienic products, as defined in claim 9, wherein: the fixed conveying part is connected with the second transmission roller through a flexible conveying medium;

the fixed conveying part comprises a transition roller, a first horizontal roller and a second horizontal roller, wherein the first horizontal roller, the second horizontal roller and the second transmission roller are positioned at the same horizontal height;

after the flexible conveying medium starts from the second driving roller and passes through the transition roller, the flexible conveying medium winds around the first horizontal roller and the second horizontal roller, and a feeding path is formed between the first horizontal roller and the second horizontal roller.

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