Tensioning device for coiled material transportation

Abstract

The utility model belongs to the technical field of coiled material transportation, and particularly relates to a tensioning device for coiled material transportation, which comprises a transport vehicle, a plurality of fixed columns fixedly mounted in the transport vehicle, rotating grooves formed in the fixed columns, connecting rods rotatably mounted in the rotating grooves, a plurality of discs fixedly mounted on the connecting rods, and a plurality of arc-shaped grooves formed in the discs. Sliding columns are installed in the arc-shaped grooves in a sliding mode, the upper ends of the sliding columns penetrate through the corresponding arc-shaped grooves and are fixedly provided with sliding strips, one ends of the sliding strips penetrate through the corresponding rotating grooves and are fixedly provided with arc-shaped plates, and the multiple discs and the multiple sliding strips are rotationally connected with the multiple rotating grooves respectively. The inner portions of the coiled materials can be extruded, so that the coiled materials cannot be loosened, it is ensured that tension of the multiple coiled materials cannot be changed during transportation, the coiled materials are prevented from being deformed due to loosening, meanwhile, it is ensured that the multiple coiled materials cannot move up and down during transportation, and it is ensured that the positions of the coiled materials are fixed during transportation, so that the coiled materials cannot be damaged due to up-and-down bumping.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of coiled material transportation, especially relates to a tensioning device for coiled material transportation. BACKGROUND

[0002] Coiled materials are widely used in many fields such as building, home, automobile, etc., among which, in the field of automobile, coiled materials are mainly used for sound insulation, heat insulation and waterproof treatment of automobiles, such as manufacturing of automobile interior, engine cover and automobile carpet, etc., and as a special type of automobile, motor home may also use these materials in its production process to meet specific functional requirements.

[0003] Most coiled material transportation has some shortcomings when in use, such as: most coiled materials may become loose when transported due to bumps, and the loose coiled materials may result in uneven surface, affecting use, and meanwhile, the coiled materials may be displaced during transportation, which may cause damage to the coiled materials and affect use. In view of this, the utility model provides a tensioning device for coiled material transportation. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a tensioning device for coiled material transportation to solve the problems in the background technology.

[0005] Therefore, the utility model provides a tensioning device for coiled material transportation, which comprises:

[0006] A transport vehicle is provided with a plurality of fixed columns fixedly installed therein, a rotating groove is formed in each fixed column, a connecting rod is rotatably installed in the rotating groove, a plurality of discs are fixedly installed on the connecting rod, a plurality of arc-shaped grooves are formed in each disc, a sliding column is slidably installed in each arc-shaped groove, a sliding strip is fixedly installed on the upper end of the sliding column and penetrates through the corresponding arc-shaped groove, one end of the sliding strip penetrates through the corresponding rotating groove and is fixedly installed with an arc-shaped plate, and the plurality of discs and the plurality of sliding strips are rotatably connected with the plurality of rotating grooves, respectively.

[0007] Two sliding grooves are formed in the transport vehicle above the fixed columns, two sealing plates are slidably installed in the transport vehicle between the two sliding grooves, and sliding blocks slidably connected with the corresponding sliding grooves are fixedly installed on both sides of each sealing plate.

[0008] A driving assembly is installed in the transport vehicle and used to drive the plurality of connecting rods to rotate.

[0009] A power assembly is installed in the transport vehicle and used to drive the two sliding blocks on the left side to slide.

[0010] In the technical solution, when the coiled material needs to be transported, firstly, the coiled materials are inserted into the fixed columns respectively, the driving assembly is arranged to drive the connecting rods to rotate, the connecting rods drive the discs to rotate respectively, the discs drive the sliding columns to slide to the outside through the arc-shaped grooves respectively, the sliding columns drive the sliding strips to slide to the outside respectively, the sliding strips drive the arc-shaped plates to slide to the outside respectively, the arc-shaped plates contact the inner walls of the coiled materials respectively, the arc-shaped plates can extrude the inside of the coiled material, so that the coiled material does not relax, and the tension of the coiled material does not change during transportation, preventing the coiled material from deforming due to relaxation.

[0011] The power assembly is arranged to drive the left two sliding blocks to slide and approach each other, the left two sliding blocks drive the left two sealing plates to slide and approach each other respectively, then the two sealing plates are tightly attached, and the two sealing plates are located at the top of the coiled materials, so that the coiled materials do not displace up and down during transportation, and the position of the coiled material is fixed during transportation, so that the coiled material is not damaged due to up and down jolting.

[0012] In the above technical solution, further, the driving assembly comprises:

[0013] The power cavity is arranged in the transport vehicle below the fixed column, the lower ends of the connecting rods penetrate the rotating grooves and extend into the power cavity, the bottom ends of the connecting rods are fixedly installed with worm gears, the worm gears are rotatably installed in the power cavity on one side of the worm gears, the worm gears are engaged with the worm gears, one end of the worm gears penetrates the power cavity and extends to the outside, and the connecting rods and the worm gears are rotatably connected with the power cavity.

[0014] In the technical solution, when the coiled material needs to be transported, firstly, the coiled materials are inserted into the fixed columns respectively, then the worm gear is rotated, the worm gear drives the worm gears engaged with the worm gear to rotate, the worm gears drive the connecting rods to rotate respectively, the connecting rods drive the discs to rotate respectively, the discs drive the sliding columns to slide to the outside through the arc-shaped grooves respectively, the sliding columns drive the sliding strips to slide to the outside respectively, the sliding strips drive the arc-shaped plates to slide to the outside respectively, the arc-shaped plates contact the inner walls of the coiled materials respectively, the arc-shaped plates can extrude the inside of the coiled material, so that the coiled material does not relax, and the tension of the coiled material does not change during transportation, preventing the coiled material from deforming due to relaxation.

[0015] In the above technical solution, further, the power assembly comprises:

[0016] Threaded rod, threaded rod is installed in the left side sliding groove and located in the sealing plate side, the threaded rod one end penetrates left two sliding block and left side sliding groove and extends to the outside, the threaded rod is equipped with two segments of opposite screw thread, and threaded rod and left two sliding block screw connection.

[0017] In the technical solution, then the staff rotates the threaded rod, under the action of the thread, the left two sliding blocks slide and approach each other, the left two sliding blocks drive the two sealing plates to slide and approach each other respectively, then the two sealing plates are tightly attached, and the two sealing plates are located at the top of the plurality of coiled materials, so that the plurality of coiled materials is not displaced up and down during transportation, the position of the coiled materials is fixed during transportation, and the coiled materials are not damaged due to up and down jolting.

[0018] In the above technical solution, further, the threaded rod is fixedly provided with operation disc two at one end, and the worm is fixedly provided with operation disc one at one end.

[0019] In the technical solution, the operation disc two is convenient for rotating the threaded rod, and the operation disc one is convenient for rotating the worm.

[0020] In the above technical solution, further, the plurality of fixed columns are distributed at equal intervals, and the plurality of arc-shaped plates are distributed at equal intervals in a ring shape.

[0021] In the technical solution, the space in the transport vehicle can be reasonably utilized, and the plurality of arc-shaped plates can support the inside of the plurality of coiled materials.

[0022] In the above technical solution, further, the other sliding groove is fixedly provided with a guide column, one end of the guide column penetrates the corresponding two sliding blocks, and the guide column is in sliding connection with the corresponding two sliding blocks.

[0023] In the technical solution, the right two sliding blocks slide on the guide column, so that the stability of the two sealing plates during sliding is ensured.

[0024] In the above technical solution, further, the sliding column, the corresponding sliding strip and the corresponding arc-shaped plate are in an integral forming structure.

[0025] In the technical solution, the stability of the sliding column, the sliding strip and the arc-shaped plate during use is ensured.

[0026] The beneficial effects of the utility model are:

[0027] 1. The tensioning device for coil transportation, first, a plurality of coils are inserted into a plurality of fixed columns respectively, a plurality of connecting rods are driven to rotate through the driving assembly, a plurality of discs are driven to rotate through the plurality of connecting rods, a plurality of sliding columns are driven to slide to the outside through the plurality of discs, a plurality of sliding strips are driven to slide to the outside through the plurality of sliding columns, a plurality of arc-shaped plates are driven to slide to the outside through the plurality of sliding strips, the plurality of arc-shaped plates are in contact with the inner walls of the plurality of coils respectively, the plurality of arc-shaped plates can extrude the inside of the coils, so that the coils cannot relax, and the tension of the plurality of coils cannot change during transportation, and the coils are prevented from deforming due to relaxation.

[0028] 2. The tensioning device for coil transportation, the left two sliding blocks are driven to slide and approach each other through the power assembly, the left two sealing plates are driven to slide and approach each other through the left two sliding blocks, then the two sealing plates are tightly attached, and at the same time, the two sealing plates are located at the top of the plurality of coils, so that the plurality of coils cannot be displaced up and down during transportation, the position of the coils is fixed during transportation, and the coils cannot be damaged due to up and down jolting. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the overall structure schematic view of the utility model;

[0030] Figure 2 It is the cross section structure schematic view of the transport vehicle of the utility model;

[0031] Figure 3 It is the cross section structure schematic view of the transport vehicle of the utility model;

[0032] Figure 4 It is the connecting rod area structure schematic view of the utility model;

[0033] Figure 5 It is the fixed column cross section structure schematic view of the utility model;

[0034] Figure 6 It is the disc area structure schematic view of the utility model;

[0035] Figure 7 It is the local explosion structure schematic view of the utility model.

[0036] The marks in the figure are:

[0037] 1, transport vehicle; 2, fixed column; 3, rotating groove; 4, disc; 5, arc-shaped groove; 6, sliding column; 7, sliding strip; 8, arc-shaped plate; 9, connecting rod; 10, sliding groove; 11, sliding block; 12, sealing plate; 13, power cavity; 14, worm; 15, worm; 16, operation disc one; 17, threaded rod; 18, operation disc two; 19, guide column. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0039] In the description of the present application, it should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn in proportion to the actual proportions. The techniques, methods and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so further discussion is not needed in subsequent drawings once an item is defined in one drawing.

[0040] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not intended to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually a class, not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0041] It should be noted that in the description of the present application, the orientation or position relationship indicated by the terms such as "front, rear, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without the opposite indication, these orientation terms do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation terms "inner, outer" refer to the inner and outer relative to the contour of each part itself.

[0042] It should be noted that in this application, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise a list of elements not only include those elements, but also include other elements not expressly listed or inherent to such processes, methods, articles, or apparatuses. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element. In addition, it should be pointed out that the scope of the methods and apparatuses in the embodiments of the present application is not limited to the order of performing the functions as shown or discussed, but can also include performing the functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method can be performed in an order different from the described order, and various steps can also be added, omitted, or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0043] Embodiment 1:

[0044] Please refer to Figure 1 - Figure 7 As shown in the figure, the embodiment provides a tensioning device for roll transportation, which comprises:

[0045] A transportation vehicle 1, a plurality of fixed columns 2 are fixedly installed in the transportation vehicle 1, a rotating groove 3 is formed in the fixed column 2, a connecting rod 9 is rotatably installed in the rotating groove 3, a plurality of disc plates 4 are fixedly installed on the connecting rod 9, a plurality of arc-shaped grooves 5 are formed in the disc plate 4, a sliding column 6 is slidably installed in the arc-shaped groove 5, the upper end of the sliding column 6 penetrates through the corresponding arc-shaped groove 5 and is fixedly installed with a sliding bar 7, one end of the sliding bar 7 penetrates through the corresponding rotating groove 3 and is fixedly installed with an arc-shaped plate 8, and the plurality of disc plates 4 and the plurality of sliding bars 7 are rotatably connected with the plurality of rotating grooves 3, respectively;

[0046] Two sliding grooves 10, the two sliding grooves 10 are both formed in the transportation vehicle 1 and located above the fixed column 2, two sealing plates 12 are slidably installed in the transportation vehicle 1 and located between the two sliding grooves 10, and the two sealing plates 12 are both fixedly installed with a sliding block 11 which is slidably connected with the corresponding sliding groove 10;

[0047] A driving assembly, the driving assembly is located in the transportation vehicle 1 and is used for driving the plurality of connecting rods 9 to rotate;

[0048] A power assembly, the power assembly is located in the transportation vehicle 1 and is used for driving the two sliding blocks 11 on the left side to slide.

[0049] When the coiled material needs to be transported, firstly, the coiled materials are inserted into the fixed columns 2 respectively, the driving assembly is arranged to drive the connecting rods 9 to rotate, the connecting rods 9 drive the discs 4 to rotate respectively, the discs 4 drive the sliding columns 6 to slide to the outside through the arc-shaped grooves 5 respectively, the sliding columns 6 drive the sliding strips 7 to slide to the outside respectively, the sliding strips 7 drive the arc-shaped plates 8 to slide to the outside respectively, the arc-shaped plates 8 contact with the inner walls of the coiled materials respectively, the arc-shaped plates 8 can extrude the inside of the coiled materials, so that the coiled materials cannot be loose, the tension of the coiled materials cannot change during the transportation, and the coiled materials cannot be deformed due to the looseness.

[0050] The power assembly is arranged to drive the left two sliding blocks 11 to slide and approach each other, the left two sliding blocks 11 drive the left two sealing plates 12 to slide and approach each other respectively, then the two sealing plates 12 are tightly attached, and the two sealing plates 12 are located at the top of the coiled materials, so that the coiled materials cannot be displaced up and down during the transportation, the position of the coiled materials is fixed during the transportation, and the coiled materials cannot be damaged due to the up and down bumping.

[0051] In this embodiment, the driving assembly comprises:

[0052] The power cavity 13 is arranged in the transport vehicle 1 and below the fixed columns 2, the lower ends of the connecting rods 9 penetrate the rotating grooves 3 and extend into the power cavity 13, the bottom ends of the connecting rods 9 are fixedly installed with the worm gears 14, the worm gears 14 are rotatably installed on one side of the power cavity 13, the worm gears 14 are engaged with the worm 15, one end of the worm 15 penetrates the power cavity 13 and extends to the outside, and the connecting rods 9 and the worm gears 14 are rotatably connected with the power cavity 13.

[0053] When the coiled material needs to be transported, firstly, the coiled materials are inserted into the fixed columns 2 respectively, then the worm 15 is rotated, the worm 15 drives the worm gears 14 engaged with the worm 15 to rotate, the worm gears 14 drive the connecting rods 9 to rotate respectively, the connecting rods 9 drive the discs 4 to rotate respectively, the discs 4 drive the sliding columns 6 to slide to the outside through the arc-shaped grooves 5 respectively, the sliding columns 6 drive the sliding strips 7 to slide to the outside respectively, the sliding strips 7 drive the arc-shaped plates 8 to slide to the outside respectively, the arc-shaped plates 8 contact with the inner walls of the coiled materials respectively, the arc-shaped plates 8 can extrude the inside of the coiled materials, so that the coiled materials cannot be loose, the tension of the coiled materials cannot change during the transportation, and the coiled materials cannot be deformed due to the looseness.

[0054] In this embodiment, the power assembly comprises:

[0055] Threaded rod 17, threaded rod 17 is rotatably mounted in the left side sliding groove 10 and located on one side of the sealing plate 12, one end of the threaded rod 17 penetrates the left two sliding blocks 11 and the left side sliding groove 10 and extends to the outside, the threaded rod 17 is provided with two sections of opposite screw threads, and the threaded rod 17 is screwed with the left two sliding blocks 11;

[0056] Wherein, then the staff rotates the threaded rod 17, under the action of the screw, the left two sliding blocks 11 slide and approach each other, the left two sliding blocks 11 drive the two sealing plates 12 to slide and approach each other respectively, then the two sealing plates 12 will be closely attached, and the two sealing plates 12 are located at the top of the several coiled materials, ensuring that the several coiled materials will not be displaced up and down during transportation, ensuring the position of the coiled material fixed during transportation, so that the coiled material will not be damaged due to up and down jolt.

[0057] Embodiment 2:

[0058] The embodiment provides a kind of coiled material transportation tensioner, in addition to including the technical solutions of above-mentioned embodiment, it further has the following technical features.

[0059] In the embodiment, one end of the threaded rod 17 is fixedly installed with the operation disc two 18, and one end of the worm 15 is fixedly installed with the operation disc one 16.

[0060] Wherein, the operation disc two 18 is arranged to facilitate the rotation of the threaded rod 17, and the operation disc one 16 is arranged to facilitate the rotation of the worm 15.

[0061] Embodiment 3:

[0062] The embodiment provides a kind of coiled material transportation tensioner, in addition to including the technical solutions of above-mentioned embodiment, it further has the following technical features.

[0063] In the embodiment, the plurality of fixed columns 2 are distributed at equal intervals, and the plurality of arc-shaped plates 8 are distributed at equal intervals in a ring shape.

[0064] Wherein, ensure that the space in the transport vehicle 1 can be reasonably utilized, and ensure that the plurality of arc-shaped plates 8 can support the inside of the plurality of coiled materials.

[0065] Embodiment 4:

[0066] The embodiment provides a kind of coiled material transportation tensioner, in addition to including the technical solutions of above-mentioned embodiment, it further has the following technical features.

[0067] In the embodiment, the other sliding groove 10 is fixedly installed with a guide column 19, one end of the guide column 19 penetrates the corresponding two sliding blocks 11, and the guide column 19 is slidably connected with the corresponding two sliding blocks 11.

[0068] The right two sliding blocks 11 slide on the guide column 19 to ensure the stability of the two sealing plates 12 on both sides during sliding.

[0069] Embodiment 5:

[0070] The embodiment provides a tensioning device for roll material transportation, which comprises the technical solutions of the above embodiments and has the following technical features.

[0071] In the embodiment, the sliding column 6, the corresponding sliding bar 7 and the corresponding arc-shaped plate 8 are integrally formed.

[0072] The sliding column 6, the sliding bar 7 and the arc-shaped plate 8 are ensured to be stable during use.

[0073] Working principle: when the roll material needs to be transported, firstly, a plurality of roll materials are inserted into the plurality of fixed columns 2, then the operating disc one 16 is rotated to drive the worm 15 to rotate, the worm 15 drives a plurality of worm gears 14 engaged with the worm 15 to rotate, the plurality of worm gears 14 drive a plurality of connecting rods 9 to rotate, the plurality of connecting rods 9 drive a plurality of discs 4 to rotate, the plurality of discs 4 drive a plurality of sliding columns 6 to slide outward through a plurality of arc-shaped grooves 5, the plurality of sliding columns 6 drive a plurality of sliding bars 7 to slide outward, the plurality of sliding bars 7 drive a plurality of arc-shaped plates 8 to slide outward, the plurality of arc-shaped plates 8 are in contact with the inner walls of the plurality of roll materials, the plurality of arc-shaped plates 8 can extrude the inside of the roll material, so that the roll material cannot relax, the tension of the plurality of roll materials during transportation cannot change, and the roll material is prevented from being deformed due to relaxation.

[0074] Then the staff rotates the operating disc two 18 to drive the threaded rod 17 to rotate, under the action of the threads, the left two sliding blocks 11 slide and move close to each other, the left two sliding blocks 11 drive the two sealing plates 12 to slide and move close to each other, at the same time, the right two sliding blocks 11 slide on the guide column 19 to ensure the stability of the two sealing plates 12 on both sides during sliding, then the two sealing plates 12 are tightly attached, and the two sealing plates 12 are located at the top of the plurality of roll materials, so that the plurality of roll materials cannot be displaced up and down during transportation, the position of the roll material during transportation is fixed, and the roll material cannot be damaged due to up and down jolting.

[0075] The embodiments of the application are described above in combination with the drawings, the embodiments and the features in the embodiments in the application can be combined with each other without conflict, the application is not limited to the above specific embodiments, the above specific embodiments are only illustrative but not limited, and those skilled in the art can make many forms under the guidance of the application without departing from the purpose of the application and the scope protected by the claims, which all belong to the protection of the application.

Claims

1. A tensioning device for web material transport, characterized in that Include: Transport vehicle (1), a plurality of fixed column (2) is fixedly installed in the transport vehicle (1), a plurality of rotating grooves (3) are set in the fixed column (2), a plurality of connecting rods (9) are rotatably installed in the rotating groove (3), a plurality of discs (4) are fixedly installed on the connecting rod (9), a plurality of arc grooves (5) are set in the disc (4), a plurality of sliding columns (6) are slidably installed in the arc groove (5), the upper end of the sliding column (6) penetrates the corresponding arc groove (5) and is fixedly installed with the sliding bar (7), one end of the sliding bar (7) penetrates the corresponding rotating groove (3) and is fixedly installed with the arc plate (8), a plurality of discs (4) and a plurality of sliding bars (7) are rotatably connected with a plurality of rotating grooves (3) respectively; Two sliding grooves (10), two sliding grooves (10) are set in the transport vehicle (1) and located above the fixed column (2), two sealing plates (12) are slidably installed in the transport vehicle (1) and between the two sliding grooves (10), the two sides of the sealing plate (12) are fixedly installed with the sliding block (11) slidably connected with the corresponding sliding groove (10); The driving assembly is located in the transport vehicle (1), and is used for driving a plurality of connecting rods (9) to rotate; The power assembly is located in the transport vehicle (1), and is used for driving the two sliding blocks (11) on the left side to slide.

2. A tensioning device for web material according to claim 1, characterized in that The driving assembly comprises: A power cavity (13) is set in the transport vehicle (1) and located below the fixed column (2), the lower end of a plurality of connecting rods (9) penetrates a plurality of rotating grooves (3) and extends into the power cavity (13) respectively, the bottom end of a plurality of connecting rods (9) is fixedly installed with a worm wheel (14), a worm (15) is rotatably installed in the power cavity (13) and located on one side of the worm wheel (14), the worm (15) is engaged with a plurality of worm wheels (14), one end of the worm (15) penetrates the power cavity (13) and extends to the outside, a plurality of connecting rods (9) and a plurality of worm wheels (14) are rotatably connected with the power cavity (13).

3. A tensioning device for web material according to claim 2, characterized in that The power assembly comprises: A threaded rod (17) is rotatably installed in the left sliding groove (10) and located on one side of the sealing plate (12), one end of the threaded rod (17) penetrates the two sliding blocks (11) on the left side and the left sliding groove (10) and extends to the outside, the threaded rod (17) is provided with two sections of threads with opposite rotation directions, and the threaded rod (17) is threadedly connected with the two sliding blocks (11) on the left side.

4. A tensioning device for web material according to claim 3, characterized in that One end of the threaded rod (17) is fixedly installed with the operation disc two (18), one end of the worm (15) is fixedly installed with the operation disc one (16).

5. The tensioning device for web material according to claim 1, wherein A plurality of fixed columns (2) are distributed at equal intervals, a plurality of arc plates (8) are annularly and equally distributed.

6. The tensioning device for web material according to claim 1, wherein Another sliding groove (10) is fixedly installed with a guide column (19), one end of the guide column (19) penetrates the corresponding two sliding blocks (11), and the guide column (19) is slidably connected with the corresponding two sliding blocks (11).

7. The tensioning device for web material according to claim 1, wherein The sliding column (6) is integrally formed with the corresponding sliding bar (7) and the corresponding arc-shaped plate (8).

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