CN109573743B - Air expansion shaft and winding mechanism for small-diameter tube core - Google Patents
Air expansion shaft and winding mechanism for small-diameter tube core Download PDFInfo
- Publication number
- CN109573743B CN109573743B CN201811548738.6A CN201811548738A CN109573743B CN 109573743 B CN109573743 B CN 109573743B CN 201811548738 A CN201811548738 A CN 201811548738A CN 109573743 B CN109573743 B CN 109573743B
- Authority
- CN
- China
- Prior art keywords
- air
- air bag
- shaft
- tube core
- small
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004804 winding Methods 0.000 title claims abstract description 40
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 abstract description 11
- 238000005096 rolling process Methods 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/24—Constructional details adjustable in configuration, e.g. expansible
- B65H75/242—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages
- B65H75/243—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages actuated by use of a fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/02—Supporting web roll
- B65H18/026—Cantilever type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/08—Web-winding mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H19/00—Changing the web roll
- B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
- B65H19/30—Lifting, transporting, or removing the web roll; Inserting core
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H19/00—Changing the web roll
- B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
- B65H19/30—Lifting, transporting, or removing the web roll; Inserting core
- B65H19/305—Inserting core
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/11—Dimensional aspect of article or web
- B65H2701/113—Size
- B65H2701/1133—Size of webs
Landscapes
- Winding Of Webs (AREA)
Abstract
The application discloses a small-diameter tube core air expansion shaft and a rolling mechanism, which comprise a shaft body, an expansion piece and a flat air bag; the surface of the shaft body is cut along the axial direction to form a mounting surface; the two ends of the air bag are fixed at the two ends of the mounting surface in a sealing way; the tensioning piece is adhered to one surface, far away from the shaft body, of the air bag; an air passage connected with external compressed air is formed in one end of the shaft body; the mounting surface is provided with a threaded hole communicated with the air passage; the air inlet bolt penetrates through the air bag and then stretches into the threaded hole; the surface of the air inlet bolt is concavely provided with an air flow conducting groove extending along the axial direction of the bolt. A winding mechanism comprises an air expansion shaft, and a flange is fixed at the end part of the air expansion shaft, provided with an air passage. The utility model provides a small diameter tube core's label paper rolling in-process on the cutting machine, the tube core can not load and unload fast and fixed problem on winding mechanism, simple structure, convenient operation, paper collection is effectual, efficient.
Description
Technical Field
The present disclosure relates generally to the field of inflatable shafts, and more particularly to an inflatable shaft and a winding mechanism for a small diameter tube core.
Background
In the prior art, the diameter of the tube core of the small-diameter label paper is 12.5mm, and the diameter of a winding shaft used in the slitting and winding process of the small-diameter label paper is 12mm, so that the tube core of 12.5mm cannot be rapidly assembled and disassembled and fixed on the winding shaft of 12mm during slitting and winding, and further the winding effect is poor and the efficiency is low.
In order to solve the problem of mismatching of the diameters of the tube core and the winding shaft, the following method is generally adopted in actual use: the two sides of the upper axial direction with the diameter of 12mm are respectively provided with a V-shaped groove with the length consistent with that of the winding shaft, a rubber strip with the length consistent with that of the V-shaped groove is fixed in the V-shaped groove, and two ends of the rubber strip are respectively fixed in the V-shaped groove. In the winding process, the rubber strip is pushed to the outer circle of the winding shaft by virtue of the friction force between the rubber strip and the tube core and the centrifugal force of the rotation of the winding shaft, so that the tube core is clamped. However, in the actual slitting and winding process, due to the error of the inner diameter of the tube core, the tube core and the winding shaft cannot be completely and synchronously and firmly fixed on the winding shaft, the winding effect is affected, and the efficiency is reduced.
Another method is also adopted in practical use: a groove with the same length as the winding shaft is formed in the winding shaft with the diameter of 12mm along the axial direction, and then a pin rod with a certain height and capable of being inserted into the groove is manufactured, so that the diameter of a shaft body formed when the pin rod is inserted into the groove is slightly larger than 12.5mm. When in actual use, the tube core is sleeved into the winding shaft, and then the pin rod is inserted into the groove, so that the tube core is clamped and fixed on the winding shaft. And when the coil is removed, the pin rod is pulled out first, and then the tube core is removed. The winding operation method is time-consuming and labor-consuming and has low efficiency.
Disclosure of Invention
In view of the foregoing drawbacks or shortcomings in the prior art, it is desirable to provide an inflatable mandrel and take-up mechanism for small diameter die that allows for quick loading and unloading and securing of the die by inflation and deflation.
In a first aspect, the present application provides an inflatable shaft for a small diameter tube core, comprising a shaft body, an inflatable sheet and a flat air bag; the surface of the shaft body is cut along the axial direction to form a mounting surface; the two ends of the air bag are fixed at the two ends of the mounting surface in a sealing way; the tensioning piece is adhered to one surface, far away from the shaft body, of the air bag; an air passage connected with external compressed air is formed in one end of the shaft body; the mounting surface is provided with a threaded hole communicated with the air passage; the air inlet bolt penetrates through the air bag and then stretches into the threaded hole; the surface of the air inlet bolt is concavely provided with an air flow conducting groove extending along the axial direction of the bolt, and the air flow conducting groove is communicated with the inside of the air bag.
According to the technical scheme provided by the embodiment of the application, the hollow cylindrical porous gasket is arranged on the outer side of the air inlet bolt in the air bag.
According to the technical scheme provided by the embodiment of the application, the mounting surface is a plane.
According to the technical scheme provided by the embodiment of the application, one surface of the tensioning sheet, which is bonded with the air bag, is a plane, and one surface of the tensioning sheet, which is far away from the air bag, is an arc surface.
According to the technical scheme provided by the embodiment of the application, the length of the air bag is 6-16cm longer than that of the tensioning sheet, and the two ends of the air bag are 3-8cm longer than the two ends of the tensioning sheet respectively.
According to the technical scheme provided by the embodiment of the application, the ratio of the cross section area of the airflow conducting groove to the cross section area of the threaded hole is in the range of 1/3-1/2.
Second aspect the present application provides a winding mechanism comprising the inflatable shaft and a flange.
According to the technical scheme provided by the embodiment of the application, the winding mechanism is fixedly connected with the splitting machine through the flange.
According to the technical scheme provided by the embodiment of the application, the rotating shaft of the slitting machine drives the winding mechanism to rotate.
The beneficial effects of this application technical scheme are: the automatic winding machine solves the problems that label paper with small diameter tube cores cannot be rapidly assembled and disassembled and rapidly fixed on a winding mechanism in the winding process of the cutting machine, and has the advantages of simple structure, convenience in operation, good winding effect and high efficiency.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
FIG. 1 is a side view of an inflatable shaft and winding mechanism for a small diameter die of the present application;
FIG. 2 is a partial cross-sectional view of an inflatable shaft for a small diameter die of the present application;
FIG. 3 is a schematic plan view of a gasket of the present application;
10. a shaft body; 11. a mounting surface on the shaft body; 20. tensioning sheets; 30. an air bag; 31. a gasket; 32. lining air holes; 40. a flange; 50. a fastening bolt; 60. an air inlet bolt; 61. an air flow conducting groove; 70. and an airway.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Please refer to fig. 1 for a side view of a first embodiment of an inflatable shaft and winding mechanism for small diameter die of the present application,
the inflatable shaft for the small-diameter tube core comprises a shaft body 10, an inflatable sheet 20 and an air bag 30; the surface of the shaft body 10 is cut along the axial direction to form a mounting surface 11; the two ends of the air bag 30 are fixed at the two ends of the mounting surface 11 in a sealing way; the tensioning sheet 20 is adhered to one surface of the air bag 30 away from the shaft body 10; as can be seen from the partial sectional view of the inflatable shaft shown in fig. 2, an air passage 70 connected with external compressed air is provided inside one end of the shaft body 10; the mounting surface 11 is provided with a threaded hole communicated with the air passage 70; the air inlet bolt 60 penetrates through the air bag 30 and then extends into the threaded hole; the surface of the air intake bolt 60 is concavely formed with an air flow passage groove 61 extending in the bolt axial direction, the air flow passage groove 61 communicates to the inside of the air bag 30, and the air in the air passage 70 communicating with the external compressed air enters the air bag 30 through the air flow passage groove 61. The winding mechanism comprises an air expansion shaft, a flange 40 is fixed at the end part of the air expansion shaft, which is provided with an air passage, a flange is also fixed at the end part of a rotating shaft of a corresponding splitting machine, the flange of the splitting machine and the flange of the air expansion shaft are connected through bolts, namely the air expansion shaft is fixedly connected with the rotating shaft of the splitting machine through a pair of flanges, and the rotating driving force of the rotating shaft of the splitting machine is used for driving the air expansion shaft to rotate. In other embodiments, the inflatable shaft may be fixedly connected to the driving shaft of the splitting machine in other fixing manners.
In the actual working process of the inflatable shaft, the tube core is sleeved on the inflatable shaft, the external compressed air is connected into the air passage 70 through the flange 40, the air in the air passage 70 enters the air bag 30 through the air flow conducting groove 61, and the air bag 30 is inflated, so that the diameter of the inflatable shaft is increased compared with that of the air bag 30 before the inflatable shaft is not inflated, and the tube core is fixed on the inflatable shaft.
In a preferred embodiment, the length of the shaft body 10 is 500mm, and in other embodiments, the length of the shaft body 10 can be any value in the range of 300-800 mm, and the length is configured according to the size of the splitting machine to be installed; the length of the air bag 30 and the length of the tensioning sheet 20 are configured according to the length of the shaft body 10.
In a preferred embodiment, the ratio of the cross-sectional area of the air flow passage groove 61 to the cross-sectional area of the screw hole is 1/3, and in other embodiments, the ratio of the cross-sectional area is any one of the values in the range of 1/3 to 1/2, and the larger the value in the ratio range, the faster the expansion speed of the air bag 30.
In a preferred embodiment, a hollow cylindrical porous pad 31 is disposed in the air bag 30 outside the air inlet bolt 60, the hollow diameter of the pad 31 is identical to the diameter of the threaded hole, the pad 31 avoids the problem of adhesion between the upper layer and the lower layer of the air bag when the air bag 30 is fixed in the threaded hole due to the air inlet bolt 60, and the upper layer and the lower layer of the air bag end surface which is communicated with the air flow conducting groove 61 are separated by disposing the pad 31, so that air can quickly enter the air bag 30 through the pad air hole 32. The schematic plan view of the gasket 31 and the gasket air hole 32 is shown in fig. 3, and the position of the gasket 31 in the inflatable shaft in this embodiment is shown in fig. 2.
In a preferred embodiment, the mounting surface 11 formed by cutting the surface of the shaft body 10 in the axial direction is a plane in order to facilitate bonding one side of the airbag 30 thereto.
In a preferred embodiment, both ends of the airbag 30 are sealingly fastened to both ends of the mounting surface 11 by fastening bolts 50.
In a preferred embodiment, the surface of the tensioning sheet 20 to which the airbag 30 is attached is planar, and is shaped to facilitate the secure attachment of the airbag 30 thereto. In the label paper winding process, the tube core is sleeved on the outer side of the air expansion shaft and is respectively contacted with the shaft body 10 of the air expansion shaft and the tension sheet 20, so that one surface of the tension sheet 20, which is far away from the air bag 30, is an arc surface, and the purpose is to be better attached to the tube core. In this embodiment, the side of the shaft body 10 contacting with the die is an arc surface, so as to better fit with the die.
In another preferred embodiment, the diameter of the inflatable shaft is 12mm when the external compressed air is not connected to the air passage 70, and the pressure value is 5.065×10 5 The external compressed air of Pa is connected into the air passage 70, and the air in the air passage 70 enters the air bag 30 through the air flow conducting groove, so that the air bag 30 is rapidly expanded, the diameter of the air expansion shaft is increased, the tube core is tightly expanded, and the requirement that the 12.5mm small-diameter tube core on the market is rapidly fixed on the winding mechanism in the slitting and winding process is met.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (7)
1. An inflatable shaft for a small-diameter tube core is characterized in that:
comprises a shaft body, a tensioning piece and a flat air bag;
the surface of the shaft body is cut along the axial direction to form a mounting surface; the two ends of the air bag are fixed at the two ends of the mounting surface in a sealing way; the tensioning piece is adhered to one surface, far away from the shaft body, of the air bag;
an air passage connected with external compressed air is formed in one end of the shaft body; the mounting surface is provided with a threaded hole communicated with the air passage; the air inlet bolt penetrates through the air bag and then stretches into the threaded hole; the surface of the air inlet bolt is concavely provided with an air flow conducting groove extending along the axial direction of the bolt, and the air flow conducting groove is communicated with the inside of the air bag; and a hollow cylindrical porous liner is arranged outside the air inlet bolt in the air bag.
2. An inflatable shaft for a small-diameter tube core according to claim 1, wherein: the mounting surface is a plane.
3. An inflatable shaft for a small-diameter tube core according to claim 1, wherein: the surface of the tensioning piece, which is bonded with the air bag, is a plane, and the surface of the tensioning piece, which is far away from the air bag, is an arc surface.
4. An inflatable shaft for a small-diameter tube core according to claim 1, wherein: the length of the air bag is 6-16cm longer than that of the tensioning sheet, and the two ends of the air bag are 3-8cm longer than the two ends of the tensioning sheet respectively.
5. An inflatable shaft for a small-diameter tube core according to claim 1, wherein: the ratio of the cross section area of the air flow conducting groove to the cross section area of the threaded hole is in the range of 1/3-1/2.
6. A winding mechanism, characterized by comprising the inflatable shaft according to any one of claims 1 to 5, wherein a flange is fixed at the end of the inflatable shaft provided with an air passage.
7. A winding mechanism according to claim 6, wherein: the winding mechanism is fixedly connected with the rotating shaft of the splitting machine through the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811548738.6A CN109573743B (en) | 2018-12-18 | 2018-12-18 | Air expansion shaft and winding mechanism for small-diameter tube core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811548738.6A CN109573743B (en) | 2018-12-18 | 2018-12-18 | Air expansion shaft and winding mechanism for small-diameter tube core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109573743A CN109573743A (en) | 2019-04-05 |
| CN109573743B true CN109573743B (en) | 2024-03-26 |
Family
ID=65929881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811548738.6A Active CN109573743B (en) | 2018-12-18 | 2018-12-18 | Air expansion shaft and winding mechanism for small-diameter tube core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109573743B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109896354B (en) * | 2019-04-22 | 2024-06-25 | 广东包庄科技有限公司 | Pneumatic shaft winding mechanism of winding machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2616140A1 (en) * | 1987-06-05 | 1988-12-09 | Achard Picard Jean | Expandable and retractable shaft especially for the gripping of spindles receiving materials in the form of a web (sheet) |
| CN101759066A (en) * | 2008-12-26 | 2010-06-30 | 永易立股份有限公司 | Gas expansion shaft |
| CN204022138U (en) * | 2014-08-19 | 2014-12-17 | 浙江广厦建设职业技术学院 | A kind of Pneumatic core shaft structure that is applied to Full-automatic film winder |
| CN204079115U (en) * | 2014-08-22 | 2015-01-07 | 湛江包装材料企业有限公司 | A kind of inflatable rolling cover for BOPP film splitter |
| CN209668533U (en) * | 2018-12-18 | 2019-11-22 | 竹林伟业科技发展（天津）股份有限公司 | A kind of minor diameter tube core novel gas expansion shaft and rolling-up mechanism |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW566416U (en) * | 2003-04-22 | 2003-12-11 | Shi-Tsai Chen | Air expanding shaft |
| WO2007061897A2 (en) * | 2005-11-17 | 2007-05-31 | Eastern Ribbon & Roll Corp. | Coreless winding apparatus |
-
2018
- 2018-12-18 CN CN201811548738.6A patent/CN109573743B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2616140A1 (en) * | 1987-06-05 | 1988-12-09 | Achard Picard Jean | Expandable and retractable shaft especially for the gripping of spindles receiving materials in the form of a web (sheet) |
| CN101759066A (en) * | 2008-12-26 | 2010-06-30 | 永易立股份有限公司 | Gas expansion shaft |
| CN204022138U (en) * | 2014-08-19 | 2014-12-17 | 浙江广厦建设职业技术学院 | A kind of Pneumatic core shaft structure that is applied to Full-automatic film winder |
| CN204079115U (en) * | 2014-08-22 | 2015-01-07 | 湛江包装材料企业有限公司 | A kind of inflatable rolling cover for BOPP film splitter |
| CN209668533U (en) * | 2018-12-18 | 2019-11-22 | 竹林伟业科技发展（天津）股份有限公司 | A kind of minor diameter tube core novel gas expansion shaft and rolling-up mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109573743A (en) | 2019-04-05 |
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