CN115057221A

CN115057221A - Single cantilever structure for storing and taking material roll and storing and taking method

Info

Publication number: CN115057221A
Application number: CN202210772894.0A
Authority: CN
Inventors: 靳玲伟; 谢飞; 衡海龙; 余招宇
Original assignee: Rept Battero Energy Co Ltd
Current assignee: Rept Battero Energy Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-09-16

Abstract

The application discloses single cantilever structure and access method for accessing material roll relates to material roll production facility technical field, and this single cantilever structure includes: the cantilever shaft is provided with a mounting seat on one side and a mounting rod arranged along the axial direction; the fixing assemblies are provided with at least one group, each group of fixing assemblies comprises a clamping piece, a positioning piece and a driving mechanism group for simultaneously driving the clamping piece and the positioning piece to extend out of or retract into the cantilever shaft along the radial direction, and the driving mechanism group is positioned in the cantilever shaft and is installed on the installation rod; when a certain material roll is sleeved on the cantilever shaft and is in place, the clamping piece and the positioning piece of the corresponding fixing component simultaneously extend out of the cantilever shaft, the clamping piece is used for supporting the inner wall of the material roll, and the positioning piece is positioned on the outer side of the side wall of the material roll, which is far away from the mounting seat. This application, not only can deposit the transportation in-process at the material book, fix a position the material book, still can once deposit and transport a plurality of materials of book, greatly improve the efficiency of access material book.

Description

Single cantilever structure for storing and taking material roll and storing and taking method

Technical Field

The application relates to the technical field of material roll production equipment, in particular to a single-cantilever structure for storing and taking material rolls and a storing and taking method.

Background

At present, in the production process of coil materials, wide materials are often required to be cut into narrow coils, and one wide material can be cut into a plurality of narrow coils. In the related industry technology, especially in the lithium battery industry, the material roll is taken and placed in a mode of manually operating and transferring a single-rod trolley or a single-cantilever AGV (automatic Guided vehicle) to take, the material taking is performed in a single-roll taking and placing mode, the efficiency is low, manpower is consumed, the material roll is easy to shake in the transferring process and even collides with transferring equipment, and the quality of the material roll is further influenced.

Disclosure of Invention

In view of one of the defects in the prior art, the present application aims to provide a single cantilever structure for accessing a material roll and an accessing method thereof, so as to solve the problem that the material roll is easy to shake or even collide with a transportation device in the related art during the transportation process.

The present application provides in a first aspect a single cantilever structure for accessing a roll of material, comprising:

the cantilever shaft is a cylinder body with a hollow interior, and a mounting rod arranged along the axial direction is arranged in the cantilever shaft;

the fixing assemblies are provided with at least one group, each group of fixing assemblies comprises a clamping piece close to the mounting seat, a positioning piece far away from the mounting seat and a driving mechanism group for simultaneously driving the clamping piece and the positioning piece to extend out or retract into the cantilever shaft along the radial direction, and the driving mechanism group is positioned in the cantilever shaft and is installed on the mounting rod;

when a certain material roll is sleeved on the cantilever shaft and is in place, the clamping piece and the positioning piece of the corresponding fixing component simultaneously extend out of the cantilever shaft, the clamping piece is used for supporting the inner wall of the material roll, and the positioning piece is positioned on the outer side of the side wall of the material roll, which is far away from the mounting seat.

In some embodiments, when at least two sets of the fixing assemblies are provided, a plurality of sets of the fixing assemblies are arranged along the axial direction of the cantilever shaft, and a limiting member and a driving member are further provided between two adjacent fixing assemblies;

the driving piece is mounted on the mounting rod and used for driving the limiting piece to extend out of or retract into the cantilever shaft along the radial direction, and the driving piece and the driving mechanism group close to the mounting seat are driven synchronously.

In some embodiments, the fixing element closest to the mounting base is used as the first fixing element, and the fixing element far from the mounting base in two adjacent fixing elements on two sides of the limiting element is used as the subsequent fixing element of the limiting element;

the distance from the positioning piece of the first fixing assembly to the mounting base is the same as the distance from any limiting piece to the positioning piece of the next fixing assembly.

In some embodiments, the positioning element and the limiting element are clamping pins.

In some embodiments, the holding member is made of soft plastic, and an end surface of the holding member away from the driving mechanism set is provided with a vacuum-proof hole.

In some embodiments, the vacuum-proof hole includes a cylindrical hole section and a kidney-shaped hole section which are communicated with each other, and the kidney-shaped hole section is communicated with the end face of the clamping member.

In some embodiments, the mounting seat is a hollow ring body, one end of the mounting seat is a plugging end of the cantilever shaft, a circle of boss is arranged on the inner wall of the other end of the mounting seat, and a circle of first mounting hole for mounting the cantilever shaft is formed in the boss.

In some embodiments, the outer annular surface of the insertion end is a tapered surface, and the outer diameter of the tapered surface gradually decreases from the boss to the insertion end.

In some embodiments, the surface of the cantilever shaft is provided with a plurality of pulley assemblies for guiding the sliding material roll, and the pulley assemblies comprise rolling bearings which are arranged in a rolling manner along the axial direction of the cantilever shaft.

The second aspect of the application provides an access method based on the single-cantilever structure for accessing the material roll, which comprises a storage step and a taking-out step;

the storing step comprises:

the material roll is sequentially sleeved on the cantilever shaft from the direction close to the mounting seat to the direction far away from the mounting seat and is in place; when each material roll is in place, the driving mechanism group of the corresponding fixing component drives the clamping piece and the positioning piece to simultaneously extend out of the cantilever shaft along the radial direction, so that the clamping piece is abutted against the inner wall of the material roll, and the positioning piece is positioned on the outer side of the side wall of the material roll, which is far away from the mounting seat;

the taking out step includes:

sequentially taking down the material roll from the direction far away from the mounting seat to the direction close to the mounting seat; before each material roll is taken down, the clamping piece and the positioning piece are driven to retract the cantilever shaft simultaneously by the driving mechanism group of the corresponding fixing component.

The beneficial effect that technical scheme that this application provided brought includes:

when a certain material roll is sleeved on the cantilever shaft and is in place, the driving mechanism group of the corresponding fixing assembly can simultaneously drive the clamping piece and the positioning piece to extend out of the cantilever shaft so as to support the inner wall of the material roll through the clamping piece, and the positioning piece is positioned on the outer side of the side wall of the material roll, which is far away from the mounting seat, so as to position the material roll; when a certain material roll needs to be taken down, a driving mechanism group of the fixing assembly can simultaneously drive the clamping piece and the positioning piece to retract into the cantilever shaft, so that the material roll is released from being fixed; therefore, the material roll can be positioned in the material roll storage and transfer process, and a plurality of material rolls can be stored and transferred at one time, so that the efficiency of storing and taking the material rolls is greatly improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a single cantilever structure according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic structural diagram of a clamping member according to an embodiment of the present application;

FIG. 4 is a bottom view of FIG. 3;

FIG. 5 is a schematic structural diagram of a mounting base according to an embodiment of the present application;

FIG. 6 is a schematic view of the positioning of a roll A in accordance with an embodiment of the present application;

fig. 7 is a schematic view showing the positioning of a roll a and a roll B according to the embodiment of the present application.

Reference numerals:

1. a cantilever shaft;

2. a mounting seat; 21. a boss; 22. a first mounting hole; 23. a conical surface; 24. a second mounting hole;

3. mounting a rod;

4. a clamping member; 41. anti-vacuum holes; 42. a third mounting hole;

5. a positioning member; 6. a limiting member; 7. a drive member;

8. a sheave assembly; 81. a rolling bearing; 82. a rotating shaft;

91. a material roll A; 92. and a material roll B.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 and fig. 2, the embodiment of the present application provides a single cantilever structure for accessing a material roll, which is suitable for a production process of materials such as a material roll, in particular for materials in the lithium battery industry.

The single boom structure described above comprises a boom shaft 1 and a fixed assembly. One side of the cantilever shaft 1 is provided with a mounting seat 2, the cantilever shaft 1 is a cylinder body with a hollow interior, and a mounting rod 3 arranged along the axial direction of the cantilever shaft is arranged in the cantilever shaft. Alternatively, the mounting rod 3 may be a steel tube or a rod of steel material. Optionally, one side of the cantilever shaft 1, which is away from the mounting base 2, is provided with an end cover for fixing the mounting rod 3, one side of the cantilever shaft 1, which is close to the mounting base 2, is provided with an opening for the mounting rod 3 to penetrate through, and the opening is used for mounting the fixing mounting rod 3 by a sealing cover.

The fixed subassembly is equipped with at least one set of, and every fixed subassembly of group all includes clamping part 4, setting element 5 and actuating mechanism group. Wherein the driving mechanism is located in the cantilever shaft 1 and is mounted on the mounting rod 3. The clamping member 4 is arranged close to the mounting seat 2 and the positioning member 5 is arranged away from the mounting seat 2. The driving mechanism is used for simultaneously driving the clamping member 4 and the positioning member 5 to extend out of or retract into the cantilever shaft 1 along the radial direction, so that a plurality of holes for the clamping member 4 and the positioning member 5 to penetrate out are formed in the side wall of the cantilever shaft 1.

In this embodiment, each driving mechanism set includes a first driving mechanism and a second driving mechanism, wherein the first driving mechanism is used for driving the clamping member 4 to extend or retract, the second driving mechanism is used for driving the positioning member 5 to extend or retract, and the first driving mechanism and the second driving mechanism are driven synchronously. Optionally, the first drive mechanism and the second drive mechanism are both air cylinders.

In this embodiment, when fixed subassembly was equipped with the multiunit, can deposit and withdraw a plurality of materials simultaneously and roll up to solve single book and get material inefficiency and the problem that the material in-process was got to the multireel manual roll dividing and is not convenient for operate.

In this embodiment, the material roll is inserted into the cantilever shaft 1 and slides along the length direction of the cantilever shaft 1. When a material roll is sleeved on the cantilever shaft 1 and slides in place, the clamping piece 4 and the positioning piece 5 of the corresponding fixing component simultaneously extend out of the side wall of the cantilever shaft 1, the clamping piece 4 is used for supporting the inner wall of the material roll, and the positioning piece 5 is positioned on the outer side of the side wall of the material roll far away from the mounting base 2 so as to position and fix the material roll.

In the single cantilever structure of the embodiment, because the fixing assemblies are provided with at least one group, each group of fixing assemblies comprises the clamping piece, the positioning piece and the driving mechanism group, when a certain material roll is sleeved on the cantilever shaft and is in place, the driving mechanism group of the corresponding fixing assembly can simultaneously drive the clamping piece and the positioning piece to extend out of the cantilever shaft so as to support the inner wall of the material roll through the clamping piece, and the positioning piece is positioned on the outer side of the side wall of the material roll, which is far away from the mounting seat, so as to position the material roll; when a certain material roll needs to be taken down, a driving mechanism group of the fixing assembly can simultaneously drive the clamping piece and the positioning piece to retract into the cantilever shaft, so that the material roll is released from being fixed; therefore, the material roll can be positioned in the material roll storage and transfer process, and a plurality of material rolls can be stored and transferred at one time, so that the efficiency of storing and taking the material rolls is greatly improved.

On the basis of the above embodiment, in this embodiment, when the fixing assemblies are provided with at least two sets, the multiple sets of fixing assemblies are arranged along the axial direction of the cantilever shaft 1, and a limiting member 6 and a driving member 7 are further disposed between two adjacent fixing assemblies.

Alternatively, the drive 7 can also be a cylinder.

The driving member 7 is mounted on the mounting rod 3, the driving member 7 is used for driving the limiting member 6 to extend or retract the cantilever shaft 1 along the radial direction, and the driving member 7 is driven synchronously with the driving mechanism near the mounting seat 2, so that the driving member 7 can move synchronously with the clamping member 4 and the positioning member 5 near the mounting seat 2.

Further, the fixing component closest to the mounting base 2 is used as the first fixing component, and of the two adjacent fixing components on both sides of the limiting component 6, the fixing component far away from the mounting base 2 is the next fixing component of the limiting component 6, that is, the fixing component close to the mounting base 2 is the previous fixing component of the limiting component 6.

The distance from the positioning element 5 of the first fixing assembly to the mounting base 2 is the same as the distance from any one of the limiting elements 6 to the positioning element 5 of the subsequent fixing assembly. The distance may be slightly greater than the width of the roll.

Optionally, when three fixing assemblies are provided, the three material rolls may be positioned, and a first fixing assembly, a second fixing assembly and a third fixing assembly are sequentially arranged in a direction from the mounting base 2 to the mounting base 2 with the cantilever shaft 1, then a first limiting member is provided between the first fixing assembly and the second fixing assembly, the first limiting member moves synchronously with the clamping member 4 and the positioning member 5 of the first fixing assembly, a second limiting member is provided between the second fixing assembly and the third fixing assembly, the second limiting member moves synchronously with the clamping member 4 and the positioning member 5 of the second fixing assembly, and driving mechanisms of the three fixing assemblies are driven independently respectively.

Further, the distance from the positioning piece 5 of the first fixing component to the mounting base 2, the distance from the first limiting piece to the positioning piece 5 of the second fixing component, and the distance from the second limiting piece to the positioning piece 5 of the third fixing component are the same and slightly larger than the width of the material roll, so that the material roll can be conveniently clamped, and the problems that the material rolls are easy to collide with each other and the adjacent material rolls are not easy to separate after being laminated due to the fact that the length of the cantilever shaft 1 is lengthened independently are solved.

In this embodiment, the positioning element 5 and the limiting element 6 may be clamping pins.

As shown in fig. 3 and 4, in the present embodiment, the whole of the clamping member 4 is made of soft glue, and the end surface of the clamping member 4 away from the driving mechanism is provided with the vacuum-proof hole 41. In addition, a third mounting hole 42 is opened in an end surface of the clamp 4 facing the driving mechanism group, and the clamp is connected to the corresponding driving mechanism through the third mounting hole 42.

Further, the vacuum-proof hole 41 includes a cylindrical hole section and a kidney-shaped hole section which are communicated with each other, and the kidney-shaped hole section is communicated with the end surface of the clamping member 4.

In this embodiment, when the clamping member 4 extends out of the cantilever shaft 1 and abuts against the inner wall of the material roll, elastic deformation can occur to effectively fix the material roll; the vacuum generation of the nip 4 after contacting the extrusion gas with the roll is prevented by the vacuum preventing holes 41.

As shown in fig. 5, in the present embodiment, the mounting base 2 is a hollow ring body, one end of the mounting base 2 is a plugging end of the cantilever shaft 1, a circle of bosses 21 is disposed on an inner wall of the other end of the mounting base 2, and a circle of first mounting holes 22 for mounting and fixing the cantilever shaft 1 is disposed on the bosses 21.

Alternatively, the end surface of the cantilever shaft 1 near the mount 2 is formed with a round of stepped surface abutting against the boss 21. When one end of the cantilever shaft 1 is inserted into the mounting seat 2 from the insertion end, the step surface of the cantilever shaft 1 is abutted with the step surface formed by the boss 21, so that the gravity of the cantilever shaft 1 and the material roll is borne by the two step surfaces together.

Preferably, the outer annular surface of the insertion end is a tapered surface 23, and the outer diameter of the tapered surface 23 gradually decreases from the boss to the insertion end.

The conical surface 23 can realize the taper structure at the connecting part of the mounting base 2 and the material roll side, thereby reducing the collision of the material roll and fixing the material roll.

Furthermore, the plugging end of the mounting base 2 may further be provided with a second mounting hole 24, i.e. a single-cantilever mounting hole position, and the mounting base 2 may be fixedly connected to any mounting surface having a corresponding mounting hole through the second mounting hole 24, so as to be used for connecting the whole with an external structure.

Optionally, the corresponding mounting surfaces include a shelf plane, a trolley plane, a power assisting arm plane and other planes with corresponding mounting holes.

In this embodiment, the surface of the cantilever shaft 1 is provided with a plurality of pulley assemblies 8 for guiding the sliding material roll, and the movement resistance is greatly reduced when the material roll moves on the cantilever shaft 1 through the plurality of pulley assemblies 8.

Alternatively, multiple rows of sheave assemblies 8 may be provided circumferentially along the boom shaft, with each row of sheave assemblies 8 being arranged axially along the boom shaft. In this embodiment, the rows of pulley assemblies 8 are all disposed on the upper surface of the cantilever shaft 1.

Further, the pulley assembly 8 includes a rolling bearing 81, and the rolling bearing 81 is arranged to roll along the axial direction of the cantilever shaft 1, i.e. the axis of the rolling bearing is perpendicular to the axis of the cantilever shaft body. The pulley assembly 8 further includes a rotating shaft 82 disposed in the sidewall of the cantilever shaft 1, and the rolling bearing 81 is sleeved on the rotating shaft 82 and rotates around the rotating shaft 82.

The embodiment of the application provides an access method based on the single-cantilever structure for accessing the material roll, and the access method comprises a storage step and a taking-out step.

The storing step comprises:

the material roll is sequentially sleeved on the cantilever shaft 1 in place from the direction close to the mounting seat 2 to the direction far away from the mounting seat 2; when each material roll is in place, the clamping piece 4 and the positioning piece 5 are simultaneously driven by a driving mechanism group of a corresponding fixing component to extend out of the cantilever shaft 1 along the radial direction, so that the clamping piece 4 supports against the inner wall of the material roll, and the positioning piece 5 is positioned on the outer side of the side wall of the material roll, which is far away from the mounting seat 2;

the taking out step includes:

sequentially taking down the material roll from the direction far away from the mounting base 2 to the direction close to the mounting base 2 from the cantilever shaft 1; before each roll is taken off, the clamping member 4 and the positioning member 5 are driven to retract the cantilever shaft 1 simultaneously by a driving mechanism group of the corresponding fixed assembly.

As shown in fig. 6-7, specifically, taking the access process of the dual roll as an example, wherein the dual roll includes a roll a91 and a roll B92 with the same width, two sets of fixing assemblies are provided, the fixing assembly close to the mounting base 2 is the former fixing assembly, the fixing assembly far away from the mounting base 2 is the latter fixing assembly, the former fixing assembly and the latter fixing assembly are independently controlled by two different sets of cylinders, the positioning element 5 of the former fixing assembly and the latter fixing assembly can be popped up from the upper surface of the cantilever shaft and penetrate through the cantilever shaft, and the clamping element 4 of the former fixing assembly and the latter fixing assembly can be popped up from the lower surface of the cantilever shaft and penetrate through the cantilever shaft. A limiting part 6 and a driving part 7 are further arranged between the two groups of fixing components. In this embodiment, the width of the material rolls of the same kind of products is the same.

The storage steps of the double-material roll specifically comprise:

first, the storage sequence of roll a91 and roll B92 was determined, with roll a91 being the first roll to be pushed into the cantilevered shaft and roll B92 being the second roll to be pushed into the cantilevered shaft.

Then, first, establish material book A91 cover on cantilever axle 1 and target in place through the pulley assembly direction, at this moment, material book A91 collides the mount pad and stops sliding, control holder 4 and setting element 5 through the cylinder of preceding fixed subassembly and pop out, driving piece 7 control locating part 6 pops out simultaneously, accomplish the location of material book A91 jointly promptly by mount pad 2 and setting element 5, by the inside reel of holder 4 butt material book A91, prevent that material book A91 from rocking, realize the spacing of material book B92 by locating part 6.

Finally, the material roll B92 is sleeved on the cantilever shaft 1 and guided to the proper position through the pulley assembly, at this time, the material roll B92 collides with the limiting piece 6 and stops sliding, the air cylinder of the latter fixing assembly controls the clamping piece 4 and the positioning piece 5 to pop out, namely, the limiting piece 6 and the positioning piece 5 jointly complete the positioning of the material roll B92, and the clamping piece 4 abuts against the inner winding drum of the material roll B92 to prevent the material roll B92 from shaking or colliding with the material roll A91.

The taking-out step of the double material rolls specifically comprises the following steps:

first, the removal sequence of the roll a91 and the roll B92 is determined, with the roll B92, which is far from the mounting base 2, being the first roll removed and the roll a91, which is close to the mounting base 2, being the last roll removed.

Then, the air cylinder of the latter fixing assembly controls the clamping piece 4 and the positioning piece 5 to retract, the material roll B92 is released, and the material roll B92 can be pushed out along the cantilever shaft.

Finally, the air cylinder of the former fixing assembly controls the retraction of the clamping member 4 and the positioning member 5, and the driving member 7 controls the retraction of the limiting member 6, so that the material roll A91 is released, and the material roll A91 can be pushed out along the cantilever shaft.

In the storing and taking process, manual material distribution is changed into automatic separation of equipment, the uncertainty and the danger of manual operation can be avoided, and the overall stability and the safety are improved.

The storing and taking method is suitable for each single cantilever structure, can position the material roll in the material roll storing and transferring process, can increase the storing and taking of multiple rolls by storing and taking one roll of material at a time, and improves the efficiency of storing and taking the material roll to a great extent.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A single cantilever structure for accessing rolls of material, comprising:

the cantilever type shaft structure comprises a cantilever shaft (1), wherein one side of the cantilever shaft (1) is provided with a mounting seat (2), the cantilever shaft (1) is a hollow cylinder body, and a mounting rod (3) arranged along the axial direction is arranged in the cantilever shaft;

the fixing assemblies are provided with at least one group, each group of fixing assemblies comprises a clamping piece (4) close to the mounting seat (2), a positioning piece (5) far away from the mounting seat (2) and a driving mechanism group for simultaneously driving the clamping piece (4) and the positioning piece (5) to extend out of or retract into the cantilever shaft (1) along the radial direction, and the driving mechanism group is positioned in the cantilever shaft (1) and is mounted on the mounting rod (3);

when a certain material roll is sleeved on the cantilever shaft (1) and is in place, the clamping piece (4) and the positioning piece (5) of the corresponding fixing component simultaneously extend out of the cantilever shaft (1), the clamping piece (4) is used for supporting the inner wall of the material roll, and the positioning piece (5) is positioned on the outer side of the side wall of the material roll, which is far away from the mounting seat (2).

2. The single cantilever structure for accessing rolls of claim 1, wherein: when at least two groups of fixing assemblies are arranged, a plurality of groups of fixing assemblies are axially arranged along the cantilever shaft (1), and a limiting piece (6) and a driving piece (7) are arranged between every two adjacent fixing assemblies;

the driving piece (7) is mounted on the mounting rod (3) and used for driving the limiting piece (6) to extend out of or retract into the cantilever shaft (1) along the radial direction, and the driving piece (7) and a driving mechanism group close to the mounting base (2) are driven synchronously.

3. The single cantilever structure for accessing rolls of claim 2, wherein: the fixing component closest to the mounting seat (2) is taken as a first fixing component, and the fixing component far away from the mounting seat (2) in two adjacent fixing components at two sides of the limiting component (6) is taken as the latter fixing component of the limiting component (6);

the distance from the positioning part (5) of the first fixing component to the mounting seat (2) is the same as the distance from any limiting part (6) to the positioning part (5) of the subsequent fixing component.

4. The single cantilever structure for accessing rolls of claim 2, wherein: the positioning piece (5) and the limiting piece (6) are clamping pins.

5. The single cantilever structure for accessing rolls of claim 1, wherein: the clamping piece (4) is made of soft rubber, and an anti-vacuum hole (41) is formed in the end face, far away from the driving mechanism set, of the clamping piece.

6. The single cantilever structure for accessing rolls of claim 5, wherein: the anti-vacuum hole (41) comprises a cylindrical hole section and a waist-round hole section which are communicated with each other, and the waist-round hole section is communicated with the end face of the clamping piece (4).

7. The single cantilever structure for accessing rolls of claim 1, wherein: the mounting seat (2) is a hollow ring body, one end of the mounting seat is an insertion end of the cantilever shaft (1), the inner wall of the other end of the mounting seat is provided with a circle of bosses (21), and a circle of first mounting holes (22) used for mounting the cantilever shaft (1) are formed in the bosses (21).

8. The single cantilever structure for accessing rolls of claim 7, wherein: the outer ring surface of the insertion end is a conical surface (23), and the outer diameter of the conical surface (23) is gradually reduced from the boss to the insertion end.

9. The single cantilever structure for accessing rolls of claim 1, wherein: the surface of the cantilever shaft (1) is provided with a plurality of pulley assemblies (8) used for guiding the sliding material rolls, each pulley assembly (8) comprises a rolling bearing (81), and the rolling bearings (81) are arranged in a rolling mode along the axial direction of the cantilever shaft (1).

10. An accessing method of a single cantilever structure for accessing a material roll based on claim 1, characterized in that it comprises a storing step and a taking-out step;

the step of storing comprises:

the material roll is sequentially sleeved on the cantilever shaft (1) from the direction close to the mounting seat (2) to the direction far away from the mounting seat (2) and is in place; when each material roll is in place, a driving mechanism group of a corresponding fixing component drives the clamping piece (4) and the positioning piece (5) to simultaneously extend out of the cantilever shaft (1) along the radial direction, so that the clamping piece (4) supports against the inner wall of the material roll, and the positioning piece (5) is positioned on the outer side of the side wall of the material roll, which is far away from the mounting seat (2);

the taking out step includes:

the material roll is sequentially taken down from the direction far away from the mounting seat (2) to the direction close to the mounting seat (2) through the cantilever shaft (1); before each material roll is taken down, the clamping piece (4) and the positioning piece (5) are driven to retract the cantilever shaft (1) simultaneously by a driving mechanism group of the corresponding fixed assembly.