A collapsible variable diameter film cutting edge material winding core

Abstract

The invention discloses a collapsible variable diameter film slitting edge material winding core, which belongs to a winding core in the technical field of film production equipment. Its technical solution comprises a main shaft, a variable diameter outer shaft arranged outside the main shaft, the main shaft sleeve is provided with a sliding connecting rod assembly, the sliding connecting rod assembly comprises a plurality of connecting rods, one end of the connecting rod is hingedly arranged on the sliding connecting rod assembly and can swing on the vertical section of the main shaft; the variable diameter outer shaft comprises a plurality of bearing shells, the inner walls of the plurality of bearing shells are hingedly arranged with the other end of the connecting rod, and the plurality of bearing shells shrink or expand with the main shaft as the central axis; the invention provides a collapsible variable diameter film slitting edge material winding core, which is conducive to the fact that after the edge material is extracted from the edge material roll, there is no need for a rubber cutter to peel off the edge material, thereby saving manpower and material resources for the rubber cutter to peel off the edge material, and greatly improving production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of film production equipment, and in particular relates to a collapsible variable-diameter film slitting edge material winding core. Background Art

[0002] In the prior art, the film cutting edge material winding mostly adopts paper tube shaft or metal tube as the winding core. After the winding core is collected, the edge material is covered by the winding core. The edge material on the winding core must be peeled off with a knife before the winding core can be taken out for continued use. In this way, a lot of winding cores must be prepared for spare use. In addition, after the paper winding core is recycled for a period of time, it will be severely worn and deformed and will have to be scrapped. Therefore, designing a winding core that can simplify the edge material peeling process, reduce the spare winding core, and is easy to use and can be directly extracted is the key to solving this problem. Summary of the invention

[0003] The purpose of the present invention is to provide a collapsible variable diameter film slitting edge material winding core, wherein a variable diameter outer shaft that can shrink or expand is arranged on the outside of the main shaft, and the diameter of the variable diameter outer shaft of the winding core wrapped with film is reduced, which is convenient for extracting from the edge material roll, and there is no need for a rubber cutter to peel off the edge material, thereby saving manpower and material resources for peeling off the edge material by the rubber cutter, and greatly improving production efficiency.

[0004] The objective of the present invention is achieved in this way, comprising a main shaft, a variable diameter outer shaft arranged outside the main shaft, the main shaft sleeve is provided with a sliding connecting rod assembly, the sliding connecting rod assembly comprises a plurality of connecting rods, one end of the connecting rod is hingedly arranged on the sliding connecting rod assembly and can swing on the vertical section of the main shaft; the variable diameter outer shaft comprises a plurality of bearing shells, the inner walls of the plurality of bearing shells are hingedly arranged to the other end of the connecting rod, and the plurality of bearing shells shrink or expand with the main shaft as the center axis.

[0005] The beneficial effects of the present invention are embodied in:

[0006] 1. In the present invention, a variable diameter outer shaft that can be contracted or expanded is arranged outside the main shaft. The variable diameter outer shaft is controlled by a sliding connecting rod assembly arranged on the main shaft. The diameter of the variable diameter outer shaft of the winding core wrapped with a film is reduced, which is conducive to the extraction from the edge material roll. The edge material roll is in a coreless state. The edge material can be stripped from the winding core and directly input into the recycling equipment. There is no need for a rubber cutter to strip the edge material, thereby saving manpower and material resources for stripping the edge material by the rubber cutter, and greatly improving production efficiency. The sliding connecting rod assembly is provided with a connecting rod that can swing on the vertical section of the main shaft to control the contraction or expansion of multiple bearings, thereby ensuring the consistency of multiple bearings during opening and closing, so that the diameter control operation of the variable diameter outer shaft is convenient and effective.

[0007] 2. In the present invention, a first end cover and a second end cover fixed on the end of the main shaft are arranged in a sliding connecting rod assembly. The first end cover and the second end cover are hinged to the multiple bearings in sequence through multiple connecting rods, so that when the multiple connecting rods rotate, the multiple bearings can be close to or away from the main shaft. In this case, the slider serves as the main power source. Through the sliding of the slider on the main shaft, the connecting rod hinged on the slider can realize the force to make the multiple bearings close to or away from the main shaft, thereby realizing the change of diameter of the variable diameter outer shaft composed of multiple bearings.

[0008] 3. In the present invention, grooves and protrusions are sequentially arranged on the two side edges of the bearing along the length direction. When two adjacent bearings are shrunk, the grooves and protrusions are staggered and fitted tightly against each other, so that the diameter of the outer shaft can be as small as possible when shrunk and closed, thereby improving the convenience of extracting the device from the film roll.

[0009] 4. In the present invention, the first end cover and the second end cover are both detachably connected to the main shaft, which is convenient for installation and removal of the slider on the main shaft, and also convenient for cleaning and maintenance of the first end cover, the second end cover, the main shaft and the slider.

[0010] 5. In the present invention, by providing a connecting hole at either end of the slider of the hollow cylindrical structure, it is convenient to connect the external power rod with the slider, thereby exerting force on the slider to achieve control of the diameter change of the variable diameter outer shaft and maintain stability in a certain diameter state. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0012] Figure 1 This is a schematic diagram of the overall structure of the winding core of the present invention;

[0013] Figure 2 This is a schematic diagram of the internal structure of the winding core of the present invention;

[0014] Figure 3 It is a schematic end view of the first end cover direction of the winding core of the present invention.

[0015] In the accompanying drawings, 1-main shaft, 2-reducing outer shaft, 3-sliding connecting rod assembly, 4-connecting rod, 5-bearing, 6-first end cover, 7-second end cover, 8-slider, 9-end cover connecting rod, 10-slider connecting rod, 11-bearing seat, 12-groove, 13-bump, 14-connecting hole. DETAILED DESCRIPTION

[0016] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0017] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the invention belongs.

[0018] A collapsible variable diameter film slitting edge material winding core comprises a main shaft 1, a variable diameter outer shaft 2 arranged outside the main shaft 1, the main shaft 1 is sleeved with a sliding connecting rod assembly 3, the sliding connecting rod assembly 3 comprises a plurality of connecting rods 4, one end of the connecting rod 4 is hingedly arranged on the sliding connecting rod assembly 3 and can swing on the vertical section of the main shaft 1; the variable diameter outer shaft 2 comprises a plurality of bearing bushes 5, the inner walls of the plurality of bearing bushes 5 are hingedly arranged with the other end of the connecting rod 4 through a bearing bush seat, and the plurality of bearing bushes 5 shrink or expand with the main shaft 1 as the central axis; a variable diameter outer shaft 2 that can shrink or expand is arranged outside the main shaft 1, and the variable diameter outer shaft 2 is provided with a plurality of bearing bushes 5. The sliding connecting rod assembly 3 arranged on the main shaft 1 is controlled to reduce the diameter of the variable diameter outer shaft 2 of the winding core wrapped with the film, which is convenient for extracting from the edge material roll. The edge material roll is in a coreless state, and the edge material can be stripped from the winding core and directly input into the recycling equipment. There is no need for a rubber cutter to strip the edge material, thereby saving manpower and material resources for stripping the edge material by the rubber cutter, and greatly improving the production efficiency. The sliding connecting rod assembly 3 is provided with a connecting rod 4 that can swing on the vertical section of the main shaft 1 to control the contraction or expansion of multiple bearings 5, so that the diameter control operation of the variable diameter outer shaft 2 is convenient and effective.

[0019] The sliding connecting rod assembly 3 also includes a first end cover 6 and a second end cover 7 respectively fixed on the ends of the main shaft 1, and a slider 8 slidably arranged on the main shaft 1, the slider 8 is placed between the first end cover 6 and the second end cover 7, and one ends of the multiple connecting rods 4 are respectively hinged on the first end cover 6, the second end cover 7 and the slider 8; the first end cover 6 and the second end cover 7 fixed on the ends of the main shaft 1 are arranged in the sliding connecting rod assembly 3, and the first end cover 6 and the second end cover 7 are hinged with the multiple bearings 5 ​​in sequence through the multiple connecting rods 4, so that when the multiple connecting rods 4 rotate, the multiple bearings 5 ​​can approach or move away from the main shaft 1. In this case, the slider 8 serves as the main power source. Through the sliding of the slider 8 on the main shaft 1, the connecting rod 4 hinged on the slider 8 realizes the force to make the multiple bearings 5 ​​approach or move away from the main shaft 1, thereby realizing the change of diameter of the variable diameter outer shaft 2 composed of multiple bearings 5.

[0020] The connecting rod 4 includes an end cover connecting rod 9 and a slider connecting rod 10. The first end cover 6 and the second end cover 7 are hinged with multiple end cover connecting rods 9 in the circumferential direction, and the slider 8 is hinged with multiple slider connecting rods 10 in the circumferential direction. The other ends of the multiple end cover connecting rods 9 and the multiple slider connecting rods 10 are hinged to the inner walls of the multiple bearing shells 5 in sequence.

[0021] The inner walls of the multiple bearing shells 5 are each provided with a plurality of bearing shell seats 11, and the multiple end cover connecting rods 9 and the multiple slider connecting rods 10 are hingedly connected to the inner wall of the bearing shell 5 through the bearing shell seats 11; by providing the bearing shell seats 11 on the inner wall of the bearing shell 5 and hingedly connecting the slider connecting rod 10 or the end cover connecting rod 9 through the bearing shell seats 11, the hinged connection of the bearing shell 5 is made more stable.

[0022] The bearing shells 5 are provided with grooves 12 and protrusions 13 in sequence on both side edges along the length direction, and the grooves 12 and protrusions 13 are staggered and fitted tightly together when the multiple bearing shells 5 are folded together; by providing grooves 12 and protrusions 13 in sequence on both side edges along the length direction of the bearing shells 5, two adjacent bearing shells 5 are staggered and fitted tightly together when they are shrunk, so that the diameter of the outer shaft is as small as possible when shrunk and closed, thereby improving the convenience of extracting the device from the film roll.

[0023] There are four evenly distributed end cover connecting rods 9 on the first end cover 6 and the second end cover 7, there are four evenly distributed slider connecting rods 10 on the slider 8, there are four bearing shells 5, and the four bearing shells 5 are hingedly arranged by the end cover connecting rods 9 and the slider connecting rods 10 arranged along the length direction.

[0024] The first end cover 6 and the second end cover 7 are both detachably connected to the main shaft 1; the first end cover 6 and the second end cover 7 are both detachably connected to the main shaft 1, which is convenient for the installation and removal of the slider 8 on the main shaft 1, and also convenient for the cleaning and maintenance of the first end cover 6, the second end cover 7, the main shaft 1 and the slider 8.

[0025] The slider 8 is a hollow cylindrical structure, and one or more connecting holes 14 are provided at either end of the cylinder; by providing the connecting hole 14 at either end of the slider 8 with a hollow cylindrical structure, it is convenient to connect the external power rod with the slider 8, thereby exerting force on the slider 8, thereby realizing the control of the diameter change of the variable diameter outer shaft 2 and maintaining stability in a certain diameter state; further, a support rod is provided inside the variable diameter outer shaft 2, the support rod passes through the first end cover 6 or the second end cover 7 and is hinged to the slider 8 through the connecting hole 14, thereby realizing the control of the sliding of the slider 8 on the main shaft 1 by controlling the extension and contraction of the support rod inside the variable diameter outer shaft 2.

[0026] Working principle and working process of the present invention:

[0027] In the present invention, after the film is wrapped on the winding core and the wrapping is completed, the sliding connecting rod assembly 3 is controlled to shrink, thereby the variable diameter outer shaft 2 in the winding core realizes the shrinkage of the overall diameter structure, so that the entire winding core is easy to be taken out from the finished wrapped film, and the edge material roll is in a coreless state. The edge material can be stripped from the winding core and directly input into the recycling equipment, and there is no need for a rubber cutter to strip the edge material, thereby saving manpower and material resources for the rubber cutter to strip the edge material, and greatly improving the production efficiency; wherein the sliding connecting rod assembly 3 is provided with a connecting rod 4 that can swing on the vertical section of the main shaft 1 to control the shrinkage or opening of multiple bearings 5, so that the diameter control operation of the variable diameter outer shaft 2 is convenient and effective; more specifically, by applying a force to the first end cover 6, the first end cover 6 can be pulled outward relative to the cylinder composed of multiple bearings, at this time, the end cover connecting rod 9 rotates clockwise around the hinge point with the bearing, thereby providing power for the sliding connecting rod assembly 3 to shrink, thereby the variable diameter outer shaft 2 realizes the shrinkage of the overall diameter structure.

[0028] A first end cover 6 and a second end cover 7 fixed to the ends of the main shaft 1 are arranged in the sliding connecting rod assembly 3. The first end cover 6 and the second end cover 7 are hinged to the multiple bearing bushes 5 in sequence through the multiple connecting rods 4, so that when the multiple connecting rods 4 rotate, the multiple bearing bushes 5 can approach or move away from the main shaft 1. In this case, the slider 8 serves as the main power source. Through the sliding of the slider 8 on the main shaft 1, the connecting rod 4 hinged on the slider 8 realizes the force that makes the multiple bearing bushes 5 approach or move away from the main shaft 1, thereby realizing the change of diameter of the variable diameter outer shaft 2 composed of the multiple bearing bushes 5; as another method for passing By providing power in the contracted state of the sliding connecting rod assembly 3, a connecting hole 14 can be set at either end of the slider 8 in the hollow cylindrical structure, which is conducive to the connection between the external power rod and the slider 8, thereby exerting force on the slider 8, thereby realizing the control of the diameter change of the variable diameter outer shaft 2 and maintaining stability in a certain diameter state; further, a support rod is set inside the variable diameter outer shaft 2, the support rod passes through the first end cover 6 or the second end cover 7 and is hinged to the slider 8 through the connecting hole 14, thereby realizing the control of the sliding of the slider 8 on the main shaft 1 by controlling the extension and contraction of the support rod inside the variable diameter outer shaft 2.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A collapsible variable diameter film slitting edge material winding core, comprising a main shaft (1) and a variable diameter outer shaft (2) arranged outside the main shaft (1), characterized in that: The main shaft (1) is sleeved with a sliding connecting rod assembly (3), the sliding connecting rod assembly (3) includes a plurality of connecting rods (4), one end of the connecting rod (4) is hingedly arranged on the sliding connecting rod assembly (3) and can swing on the vertical section of the main shaft (1); the variable diameter outer shaft (2) includes a plurality of bearing shells (5), the inner walls of the plurality of bearing shells (5) are each provided with a plurality of bearing shell seats (11), the inner walls of the plurality of bearing shells (5) are hingedly arranged with the other end of the connecting rod (4) via the bearing shell seats (11), and the plurality of bearing shells (5) are arranged with the main shaft (1) as the center. The central axis contracts or expands; the sliding connecting rod assembly (3) further comprises a first end cover (6) and a second end cover (7) respectively fixedly arranged at the ends of the main shaft (1) and a sliding block (8) slidably arranged on the main shaft (1), the sliding block (8) being arranged between the first end cover (6) and the second end cover (7); one end of each of the plurality of connecting rods (4) is respectively hingedly arranged on the first end cover (6), the second end cover (7) and the sliding block (8); the first end cover (6) and the second end cover (7) are both detachably connected to the main shaft (1).

2. The collapsible variable diameter film cutting edge material winding core according to claim 1, characterized in that: The connecting rod (4) comprises an end cover connecting rod (9) and a slider connecting rod (10); a plurality of end cover connecting rods (9) are hingedly arranged on the circumferential direction of the first end cover (6) and the second end cover (7); a plurality of slider connecting rods (10) are hingedly arranged on the circumferential direction of the slider (8); the other ends of the plurality of end cover connecting rods (9) and the plurality of slider connecting rods (10) are hingedly arranged on the inner walls of the plurality of bearing shells (5) in sequence.

3. The collapsible variable diameter film cutting edge material winding core according to claim 2, characterized in that: The plurality of end cover connecting rods (9) and the plurality of slider connecting rods (10) are hingedly connected to the inner wall of the bearing bush (5) via a bearing bush seat (11).

4. The collapsible variable diameter film cutting edge material winding core according to claim 1 or 2, characterized in that: The bearing shell (5) is provided with grooves (12) and protrusions (13) in sequence on both side edges along the length direction, and when a plurality of the bearing shells (5) are gathered together, they fit tightly together through the grooves (12) and the protrusions (13).

5. The collapsible variable diameter film cutting edge material winding core according to claim 2, characterized in that: Four end cover connecting rods (9) are evenly arranged on the first end cover (6) and the second end cover (7), four slider connecting rods (10) are evenly arranged on the slider (8), four bearing bushes (5) are provided, and the four bearing bushes (5) are hingedly arranged through the end cover connecting rods (9) and the slider connecting rods (10) provided along the length direction.

6. The collapsible variable diameter film cutting edge material winding core according to claim 5, characterized in that: The sliding block (8) is a hollow cylindrical structure, and one or more connecting holes (14) are provided at any end of the cylindrical structure.

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