CN210148911U - Core rod structure for floating supporting metal hollow body - Google Patents
Core rod structure for floating supporting metal hollow body Download PDFInfo
- Publication number
- CN210148911U CN210148911U CN201822196071.XU CN201822196071U CN210148911U CN 210148911 U CN210148911 U CN 210148911U CN 201822196071 U CN201822196071 U CN 201822196071U CN 210148911 U CN210148911 U CN 210148911U
- Authority
- CN
- China
- Prior art keywords
- mandrel
- bearing
- bearing assembly
- shaft
- core rod
- 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
Images
Landscapes
- Sliding-Contact Bearings (AREA)
Abstract
A mandrel structure for floating support of a metallic hollow body; the method comprises the following steps: the mandrel shaft is of an elongated rotary body structure; the core rod is of a hollow cylindrical structure, is concentrically sleeved on the core rod shaft and rotates around the longitudinal axis of the core rod shaft; the bearing assembly is connected between the mandrel and the mandrel shaft; the periphery of the mandrel is provided with a pressure bearing surface for bearing printing pressure generated during printing; the bearing center of the bearing surface is positioned on the supporting part of the bearing assembly for the mandrel. The utility model arranges the supporting part of the bearing component at the bearing center of the bearing surface of the alignment core rod, and the special supporting arrangement can ensure that the printing pressure of the core rod is uniformly distributed along the longitudinal axis direction; the bearing assembly is designed to be adjustable along the longitudinal axis direction of the mandrel shaft, so that the position of the supporting part of the bearing assembly is adjusted, the mandrel with different pressure-bearing centers can be aligned, the axial position of the front end of the mandrel does not need to be adjusted, the shape changing operation is simplified, the time is saved, and the cost is reduced.
Description
Technical Field
The utility model relates to a processing technology field of metal hollow body, concretely relates to in surface printing process or other jar forming process (like jar body knurling shaping etc.) of metal hollow body, carry out the plug structure of floating support to it.
Background
The metal hollow body is a metal cylindrical body with one end open, such as a metal can and a power battery shell. Taking a metal can (two-piece can made of materials such as iron and aluminum) as an example, when printing the surface of the metal can, the metal can needs to be sleeved on a mandrel structure, and the mandrel structure plays a supporting role in printing the metal can. In the printing process, the outer surface of the mandrel required to interact is parallel to and attached to the outer surface of a printing sticking wheel of a printing machine, so that the can body has uniform printing pressure everywhere along the longitudinal axis of the can body, and the consistency of the printing quality everywhere of the can body is further ensured. Generally, the parallelism is required to be no more than 0.05mm along the length of the can body.
In the conventional mandrel assembly in the prior art (hereinafter referred to as "solution one"), if the requirement of the parallelism is to be met, the requirement of the assembly precision of each relevant part in the mandrel structure is high, so that the manufacturing difficulty is high, and especially for the structure with the function of single skip printing of the mandrel, the requirement of the precision of each part is high because of a large number of moving parts. Meanwhile, due to the existence of larger parallelism error, in order to ensure the minimum printing pressure, the maximum printing pressure is adjusted to be larger, so that the heating and the abrasion of a bearing of the core rod, a cam and a follower bearing which are associated with the core rod structure and other moving parts are greatly increased, the service life of each part is further reduced, and meanwhile, the printing quality is difficult to achieve an ideal state.
In order to overcome the disadvantages of the first solution, a mandrel structure with a floating self-alignment function (referred to as "solution two") has been developed, in which only one bearing assembly is connected between the mandrel and the mandrel shaft, and the mandrel has a floating characteristic relative to the bearing assembly due to the radial play of the bearing. Therefore, to some extent, the floating characteristic can enable the core rod to be automatically calibrated in the printing process, so that the core rod is automatically parallel to the printing adhesive cloth, and the can body is ensured to have uniform printing pressure everywhere along the longitudinal axis of the can body, so that the precision requirement on each relevant part is reduced, the maximum printing pressure is reduced, the heating and the abrasion of the bearing assembly, the cam bearing and other relevant moving parts are reduced, and the service life of each part is prolonged.
The applicant has made a more in-depth analysis of the floating self-aligned mandrel structure of the second embodiment to find that: during the printing process of the metal can, the more uniform the pressure distribution of the printing area of the mandrel, the closer the action line of the resultant force of the distributed pressure is to the geometric center of the printing area, and when the printing pressure distribution is completely uniform, the action line of the resultant force passes through the geometric center of the printing area. Theoretically, the more uniform the mandrel printing pressure distribution, the more stable and consistent the printing quality, and the smaller the maximum printing pressure, the smaller the wear and heat generation of each relevant part. The bearing assembly in the second embodiment is used to bear the printing pressure, the supporting force of the bearing can be combined into a resultant force, which exists as an acting force, and the resultant force of the printing pressure can exist as a reaction force. During printing, the mandrel is in a relatively balanced state, and according to the principle of force and moment balance, if the printing pressure of the mandrel is uniformly distributed along the longitudinal axis direction, the position of the bearing assembly and the printing pressure center of the mandrel (i.e. the geometric center of the printing area of the mandrel) must satisfy the following relationship:
if the bearing assembly comprises only one ball bearing unit, the fulcrum of the bearing assembly must coincide with the center of pressure of the printing; if the bearing assembly comprises at least two ball bearing units, the center of the printing pressure is required to be positioned between the fulcrums at the two outermost sides of the bearing assembly, and the closer the center of the printing pressure is to the midpoint of a connecting line of the fulcrums at the two outermost sides of the bearing assembly, the more uniform the stress of each bearing unit of the bearing assembly is.
However, the second solution of the prior art does not require the position of the bearing support in detail, so that the second solution may not effectively achieve automatic alignment due to uneven printing pressure during printing. At this moment, the original purpose of the scheme design cannot be achieved, and meanwhile, the bearing support bears bending moment, so that the uneven stress of the bearing support can aggravate the heating and the abrasion of the bearing unit in the bearing assembly, and the service life of the bearing assembly is seriously shortened.
On the other hand, the second solution of the prior art can be realized only by the following three ways when producing can types with different can heights:
replacing a mandrel shaft, ensuring that the relative axial position of the front end of the mandrel in equipment is unchanged, only changing the contact length of the outer cylindrical surface of the mandrel and a metal can, and simultaneously enabling the printing pressure center in the printing process to be positioned on a supporting point of the mandrel shaft to the mandrel; the mandrel shaft needs to be replaced, so that the part cost, the labor cost and the time cost are greatly increased;
secondly, the axial position of the front end of the mandrel in the equipment and the contact length of the outer cylindrical surface of the mandrel and the metal can are changed without replacing the mandrel shaft, and meanwhile, the printing pressure center in the printing process is positioned on a supporting point of the mandrel shaft on the mandrel; the axial position of the front end of the mandrel is changed in the mode, namely the axial position of the tank opening when the equipment enters the tank is changed, so that the conveying line of the one-way machine part before the printing machine enters the tank needs to be adjusted to adapt to the change of the position of the tank opening, the adjusting difficulty is increased, even the realization is difficult, and meanwhile, the time and the labor cost are greatly increased;
changing the contact length of the outer cylindrical surface of the core rod and the metal can only without changing the core rod shaft and changing the axial position of the front end of the core rod; but the printing pressure center during metal can printing this moment will be difficult to guarantee still to be located the support center within range, and then also can't guarantee the metal can along the printing pressure evenly distributed of axis direction, also can greatly increased support bearing's simultaneously generate heat and wearing and tearing, reduce the life of part.
Therefore, the three tank height-changing modes have great defects and are basically difficult to reliably implement in actual production.
Therefore, how to solve the above-mentioned deficiencies of the prior art is a problem to be solved by the present invention.
Disclosure of Invention
The utility model aims at providing a plug structure for floating support metal hollow body.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a core rod structure of a central floating support for printing a metal hollow body; the method comprises the following steps:
a mandrel shaft of an elongated solid of revolution construction;
the core rod is of a hollow cylinder structure and is rotatably and concentrically sleeved on the core rod shaft, so that the core rod can rotate around the longitudinal axis of the core rod shaft;
a bearing assembly connected between the mandrel and the mandrel shaft;
the periphery of the mandrel is provided with a pressure bearing surface which is used for bearing printing pressure generated in printing; the bearing center of the bearing surface is positioned on the supporting part of the bearing assembly for the mandrel.
The relevant content in the above technical solution is explained as follows:
1. in the above solution, the bearing assembly includes only one bearing unit, and the support portion is a central fulcrum of the bearing unit.
2. In the above aspect, the bearing assembly includes at least two bearing units arranged in the longitudinal axis direction of the mandrel shaft, and the support portion is a support region formed between the center fulcrums of the two outer bearing units.
3. In the above scheme, the method further comprises:
at least one sleeve spacer positioned on said mandrel shaft and axially locating said bearing assembly against said mandrel; the bearing assembly is positionally adjustable along the longitudinal axis of the mandrel shaft by the sleeve spacer.
4. In the above scheme, the sleeve gasket has multiple length specifications, and the axial position of the bearing assembly is adjustable by abutting and positioning a single sleeve gasket with different length specifications and the bearing assembly;
or the sleeve gasket has multiple length specifications, and the sleeve gasket with the multiple different length specifications is combined in the axial direction to abut against the bearing assembly for positioning, so that the axial position of the bearing assembly can be adjusted;
alternatively, the sleeve spacer may have only one length specification, and the axial position of the bearing assembly may be adjustable by axially aligning different numbers of sleeve spacers in combination against the bearing assembly.
5. In the above scheme, a shaft shoulder is formed on the mandrel shaft, and the sleeve gasket is abutted and positioned between the shaft shoulder and the bearing assembly.
6. In the above aspect, the bearing assembly has a plurality of thickness specifications, and the thickness refers to the thickness of the bearing assembly in the radial direction of the mandrel shaft; the need for retooling of metal hollow body printing of different can body diameters is achieved by positioning bearing assemblies of different thickness specifications on the mandrel shaft.
7. In the above scheme, the method further comprises:
and the filling block is sleeved at the front end of the mandrel shaft and is in clearance fit with the mandrel.
8. In the scheme, the filling block has various thickness specifications, and the thickness refers to the thickness of the filling block in the radial direction of the mandrel shaft; by positioning the filling blocks with different thickness specifications on the mandrel shaft, the requirement of changing the printing of the metal hollow bodies with different diameters of the tank body is met.
In order to achieve the above object, the utility model discloses a another technical scheme is:
a mandrel structure for floating support of a metallic hollow body; the method comprises the following steps:
a mandrel shaft of an elongated solid of revolution construction;
the core rod is of a hollow cylinder structure and is rotatably and concentrically sleeved on the core rod shaft, so that the core rod can rotate around the longitudinal axis of the core rod shaft;
the bearing assembly is connected between the mandrel and the mandrel shaft, and the axial arrangement position of the bearing assembly is adjustable;
the periphery of the mandrel is provided with a pressure bearing surface which is used for bearing printing pressure generated in printing; the bearing center of the bearing surface is positioned on the supporting part of the bearing assembly for the mandrel.
The relevant content in the above technical solution is explained as follows:
1. in the above solution, the bearing assembly includes only one bearing unit, and the support portion is a central fulcrum of the bearing unit.
2. In the above aspect, the bearing assembly includes at least two bearing units arranged in the longitudinal axis direction of the mandrel shaft, and the support portion is a support region formed between the center fulcrums of the two outer bearing units.
3. In the above scheme, the method further comprises:
at least one sleeve spacer positioned on said mandrel shaft and axially locating said bearing assembly against said mandrel; the bearing assembly is positionally adjustable along the longitudinal axis of the mandrel shaft by the sleeve spacer.
4. In the above scheme, the sleeve gasket has multiple length specifications, and the axial position of the bearing assembly is adjustable by abutting and positioning a single sleeve gasket with different length specifications and the bearing assembly;
or the sleeve gasket has multiple length specifications, and the sleeve gaskets with the different length specifications are arranged in the axial direction and abutted against the bearing assembly for positioning, so that the axial position of the bearing assembly is adjustable;
alternatively, the sleeve spacer may have only one length specification, and the axial position of the bearing assembly may be adjustable by axially aligning a different number of sleeve spacers against the bearing assembly.
5. In the above scheme, a shaft shoulder is formed on the mandrel shaft, and the sleeve gasket is abutted and positioned between the shaft shoulder and the bearing assembly.
6. In the above aspect, the bearing assembly has a plurality of thickness specifications, and the thickness refers to the thickness of the bearing assembly in the radial direction of the mandrel shaft; the need for retooling of metal hollow body printing of different can body diameters is achieved by positioning bearing assemblies of different thickness specifications on the mandrel shaft.
7. In the above scheme, the method further comprises:
and the filling block is sleeved at the front end of the mandrel shaft and is in clearance fit with the mandrel.
8. In the scheme, the filling block has various thickness specifications, and the thickness refers to the thickness of the filling block in the radial direction of the mandrel shaft; by positioning the filling blocks with different thickness specifications on the mandrel shaft, the requirement of changing the printing of the metal hollow bodies with different diameters of the tank body is met.
The utility model discloses a theory of operation and advantage as follows:
the supporting part of the bearing assembly is arranged at the bearing center of the bearing surface of the alignment core rod, and the printing pressure of the core rod can be ensured to be uniformly distributed along the longitudinal axis direction through the specific supporting arrangement;
the bearing assembly is designed to be adjustable along the longitudinal axis direction of the mandrel shaft, so that the position of the supporting part of the bearing assembly is adjusted, the mandrel with different pressure-bearing central positions can be aligned, and the axial position of the front end of the mandrel in the equipment is kept basically unchanged, so that the shape changing operation is simplified, the time is saved, and the cost is reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;
FIG. 2 is a diagram showing a state of use of the apparatus to which the embodiment of the present invention is applied;
FIG. 3 is a schematic cross-sectional view of a modified first tank height according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a second tank height for remodeling according to the embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a modified diameter first can body according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a second modified diameter can body according to an embodiment of the present invention.
In the above drawings: 0. a metal can; 1. a mandrel shaft; 2. a core rod; 3. a bearing assembly; 4. a bearing unit; 5. a pressure bearing face; 6. a pressure bearing center; 7. a support portion; 8. the front end of the mandrel shaft; 9. a central fulcrum of each bearing unit; 10. a sleeve gasket; 11. a front end of the mandrel; 12. a shaft shoulder; 13. a rear end of the mandrel shaft; 14. filling blocks; 20. a can body feeding mechanism; 21. pre-rotating the mandrel; 22. printing a bonding wheel; 23. an ink station; 24. a mandrel structure; 25. printing adhesive cloth; 26. a transfer wheel; 27. covering the optical machine; A. a support region.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
example (b): referring to fig. 1 and 3-6, there is shown a mandrel structure for floating and supporting a metal hollow body, which is used in a printing apparatus as shown in fig. 2, the structure of the printing apparatus is not directly related to the present invention, and is only used for illustration of the present invention in implementation, so the protection scope of the present invention is not limited thereby. Besides printing equipment, the invention can also be applied to other can forming processes (such as can body knurling forming and the like), and the specific equipment is not illustrated by the attached drawings.
In the present embodiment, the metal hollow body may be specifically a metal can 0.
As shown in fig. 2, the printing apparatus is used for surface printing of metal cans 0, and mainly comprises a can body feeding mechanism 20, a mandrel turntable 21, a printing and gluing wheel 22 and a plurality of ink stations 23. The mandrel turntable 21 and the printing and bonding wheel 22 are both disc-shaped, and are arranged close to each other, and the rotating shafts of the mandrel turntable 21 and the printing and bonding wheel are parallel. Be provided with a plurality ofly along the circumferencial direction on the plug carousel 21 the utility model discloses a plug structure 24, during jar body feed mechanism 20 will treat that metal can 0 of printing sends into each plug structure 24 on the plug carousel 21, each metal can 0 is fixed a position and is driven along the axis rotation of plug carousel 21 by each plug structure 24, makes metal can 0 before will getting into the printing region, and the linear velocity is close the linear velocity of seal viscose cloth 25 that seal viscose wheel 22 is attached.
The printing and sticking wheel 22 is provided with a plurality of printing and sticking cloth 25 along the circumferential direction, when the printing and sticking wheel 22 rotates, each printing and sticking cloth 25 is sequentially contacted with each ink station 23 one by one, and the printing and sticking cloth 25 is used for applying ink to be printed on each printing and sticking cloth 25. The printing and bonding wheel 22 is arranged close to the mandrel turntable 21, and when the mandrel turntable 21 rotates, each mandrel structure 24 sequentially contacts each printing and bonding cloth 25 one by one, so that the metal can 0 on each mandrel structure 24 rotates once during the joint with the printing and bonding cloth 25 coated with ink, and the ink on the printing and bonding cloth 25 is transferred to the metal can 0. The printed metal can 0 is coated with a layer of protective varnish on the outer surface of the can body by a glazing machine 27, and then the printed and glazed metal can 0 is transferred from the mandrel structure 24 to a conveyor chain (such as a pin chain) or a conveyor belt (not shown) by a transfer wheel 26, and then is dried by an oven (not shown), thereby completing the printing process.
As shown in fig. 1, the mandrel structure includes:
a mandrel shaft 1 of an elongated solid of revolution construction;
the core rod 2 is of a hollow cylinder structure and is rotatably and concentrically sleeved on the core rod shaft 1 so as to rotate around the longitudinal axis of the core rod shaft 1;
a bearing assembly 3 connected between the mandrel 2 and the mandrel shaft 1; the bearing assembly 3 is positioned on the mandrel shaft 1 in the longitudinal axis direction of the mandrel shaft 1, and rollingly supports the mandrel 2. The bearing assembly 3 comprises at least one bearing unit 4, which bearing unit 4 may be selected from ball bearings, cylindrical roller bearings with a circular arc contact surface, etc.
Wherein, the periphery of the mandrel 2 has a pressure bearing face 5, and the pressure bearing face 5 is used for bearing the printing pressure generated during printing, and the printing pressure is uniformly applied on the whole pressure bearing face 5. The bearing center 6 of the bearing surface 5 is located on a support 7 of the bearing assembly 3 for the mandrel 2.
The pressure bearing center 6 refers to the center of the pressure bearing face 5 in the direction of the longitudinal axis of the mandrel 2, i.e. the geometric center of the printing pressure area of the mandrel 2.
Wherein the bearing assembly 3 may comprise only one bearing unit 4, in which case the support 7 is the central fulcrum 9 of the bearing unit 4; alternatively, the bearing assembly 3 comprises at least two bearing units 4 arranged in the direction of the longitudinal axis of the mandrel shaft 1, in which case the support 7 is the support area a formed between the central fulcrums 9 of the two outer bearing units 4.
The arrangement of the bearing assembly 3 can make the mandrel structure have floating property, taking a ball bearing as an example, the inner ring of the ball bearing is positioned on the mandrel shaft 1, the outer ring is positioned on the mandrel 2, and because the ball and the inner ring and the outer ring have clearance, the floating property of the mandrel 2 relative to the bearing assembly 3 can be realized by the clearance; at the same time, the support 7 of the bearing assembly 3 is aligned to the printing pressure center (bearing center 6) of the metal can 0, so that the floating feature enables the mandrel 2 to be automatically aligned parallel to the printing blanket 25 of the printing and gluing wheel 22 during the printing process, ensuring that the can body has uniform printing pressure everywhere along its longitudinal axis.
As shown in fig. 2 to 5, the core rod structure further includes:
at least one sleeve spacer 10 positioned on the mandrel shaft 1 and axially locating the bearing assembly 3 against it;
the bearing assembly 3 is adjustable in axial position along the mandrel shaft 1 by means of the sleeve gasket 10.
The adjustment of the position of the bearing assembly 3 by the sleeve gasket 10 is only one of the ways of adjusting the axial position of the bearing assembly 3, and is for illustration purposes only, and besides, the adjustment of the axial position of the bearing assembly 3 can be realized by other existing technologies by those skilled in the art.
When the tank height changing is implemented in production, the core rod 2 with different pressure-bearing centers 6 needs to be changed; the axial position of the bearing assembly 3 can be adjusted to adjust the position of the supporting part 7, so that the core rods 2 with different pressure-bearing centers 6 can be aligned (the axial position of the front end 11 of the core rod 2 relative to the equipment does not need to be adjusted), the model changing operation is simplified, the time is saved, and the cost is reduced.
Wherein the sleeve gasket 10 can have a plurality of length specifications, and the axial position of the bearing assembly 3 can be adjusted by abutting and positioning a single sleeve gasket 10 with different length specifications and the bearing assembly 3;
alternatively, the sleeve gasket 10 may have a plurality of length specifications, and the axial position of the bearing assembly 3 is adjustable by arranging and combining a plurality of sleeve gaskets 10 with different length specifications in the longitudinal axis direction of the mandrel shaft 2 to be abutted against the bearing assembly 3;
alternatively, the sleeve spacer 10 may have only one length specification, and the axial position of the bearing assembly 3 may be adjusted by arranging and combining different numbers of sleeve spacers 10 in the longitudinal axial direction of the mandrel shaft 2 to be positioned against the bearing assembly 3.
Wherein, a shaft shoulder 12 is formed on the mandrel 2 shaft, and the sleeve gasket 10 is abutted and positioned between the shaft shoulder 12 and the bearing assembly 3. Besides, the sleeve gasket 10 can be abutted and positioned by other structures such as a snap spring.
As shown in fig. 4 and 5, the bearing assembly 3 may have various thickness specifications, and the thickness refers to the thickness of the bearing assembly 3 in the radial direction of the mandrel shaft 1; the need for retooling of metal can printing of different can body diameters is achieved by locating bearing assemblies 3 of different gauge thickness on the mandrel shaft 1.
By this design, the diameter of the main body 13 of the mandrel shaft 1 (i.e., the diameter between the bearing at the root of the mandrel shaft and the front end of the shaft) can be designed to be the maximum diameter, thereby enhancing the support rigidity and strength of the mandrel shaft 1, reducing the bending deformation of the mandrel shaft 1 during can forming (e.g., printing), and improving the service life of the related parts and the printing quality of the metal can.
Wherein, still include:
and the filling block 14 is sleeved at the front end 8 of the mandrel shaft 1 and is in clearance fit with the mandrel 2. The filling block 14 may be a cylindrical structure with two open ends.
Through the arrangement of the filling block 14, on one hand, pollutants can be prevented from entering the bearing assembly 3, on the other hand, the internal space of the core rod structure can be reduced, and the vacuum suction efficiency is improved.
The filler block 14 may have various thickness specifications, which refers to the thickness of the filler block 14 in the radial direction of the mandrel shaft 1; the need for retooling of metal can printing of different can body diameters is achieved by positioning filler blocks 14 of different thickness specifications on the mandrel shaft 1.
When the core rod structure needs to be adjusted to meet the requirements of tank height-changing (tank length-changing) printing of the metal tank, firstly, a nut assembled at the front end 8 of a core rod shaft 1 is dismounted, and a bearing assembly 3 is dismounted; then, selecting the core rods 2 at different pressure-bearing centers 6 corresponding to the height parameters of the can type to be printed, and adjusting the installation position of the bearing assembly 3 according to the length of the pressure-bearing surface 5 of the core rod 2 to ensure that the supporting part 7 of the bearing assembly 3 is aligned with the pressure-bearing center 6 of the core rod 2; the bearing assembly 3 is then positioned and the nut fitted, thereby completing the remodelling operation. The control of the axial position of the bearing assembly 3 can be realized by matching with the sleeve spacers 10 with different length specifications, but the implementation is not limited to this, and the positioning of the bearing assembly 3 can also be realized by other structures such as a snap spring.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. A mandrel structure for floating support of a metallic hollow body, characterized in that: the method comprises the following steps:
a mandrel shaft of an elongated solid of revolution construction;
the core rod is of a hollow cylinder structure and is rotatably and concentrically sleeved on the core rod shaft, so that the core rod can rotate around the longitudinal axis of the core rod shaft;
a bearing assembly connected between the mandrel and the mandrel shaft;
the periphery of the mandrel is provided with a pressure bearing surface which is used for bearing printing pressure generated in printing; the bearing center of the bearing surface is positioned on the supporting part of the bearing assembly for the mandrel.
2. The mandrel structure of claim 1, wherein: the bearing assembly includes only one bearing unit, and the support portion is a central fulcrum of the bearing unit.
3. The mandrel structure of claim 1, wherein: the bearing assembly comprises at least two bearing units arranged along the longitudinal axis direction of the mandrel shaft, and the supporting part is a supporting area formed between the central fulcrums of the two outer bearing units.
4. The mandrel structure of claim 1, wherein: further comprising:
at least one sleeve spacer positioned on said mandrel shaft and axially locating said bearing assembly against said mandrel;
the bearing assembly is positionally adjustable along the longitudinal axis of the mandrel shaft by the sleeve spacer.
5. The mandrel structure of claim 4, wherein: the sleeve gasket has multiple length specifications, and the axial position of the bearing assembly is adjustable by abutting and positioning a single sleeve gasket with different length specifications with the bearing assembly;
or the sleeve gasket has multiple length specifications, and the sleeve gasket with the multiple different length specifications is combined in the axial direction to abut against the bearing assembly for positioning, so that the axial position of the bearing assembly can be adjusted;
alternatively, the sleeve spacer may have only one length specification, and the axial position of the bearing assembly may be adjustable by axially aligning different numbers of sleeve spacers in combination against the bearing assembly.
6. The mandrel structure of claim 4, wherein: a shoulder is formed on the mandrel shaft and the sleeve spacer is positioned against the shoulder and the bearing assembly.
7. The mandrel structure of claim 1, wherein: the bearing assembly has a plurality of thickness specifications, the thickness referring to the thickness of the bearing assembly in the radial direction of the mandrel shaft; the need for retooling of metal hollow body printing of different can body diameters is achieved by positioning bearing assemblies of different thickness specifications on the mandrel shaft.
8. The mandrel structure of claim 1, wherein: further comprising:
and the filling block is sleeved at the front end of the mandrel shaft and is in clearance fit with the mandrel.
9. The mandrel structure of claim 8, wherein: the filling block has a plurality of thickness specifications, wherein the thickness refers to the thickness of the filling block in the radial direction of the mandrel shaft; by positioning the filling blocks with different thickness specifications on the mandrel shaft, the requirement of changing the printing of the metal hollow bodies with different diameters of the tank body is met.
10. A mandrel structure for floating support of a metallic hollow body, characterized in that: the method comprises the following steps:
a mandrel shaft of an elongated solid of revolution construction;
the core rod is of a hollow cylinder structure and is rotatably and concentrically sleeved on the core rod shaft, so that the core rod can rotate around the longitudinal axis of the core rod shaft;
the bearing assembly is connected between the mandrel and the mandrel shaft, and the axial arrangement position of the bearing assembly is adjustable;
the periphery of the mandrel is provided with a pressure bearing surface which is used for bearing printing pressure generated in printing; the bearing center of the bearing surface is positioned on the supporting part of the bearing assembly for the mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822196071.XU CN210148911U (en) | 2018-12-26 | 2018-12-26 | Core rod structure for floating supporting metal hollow body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822196071.XU CN210148911U (en) | 2018-12-26 | 2018-12-26 | Core rod structure for floating supporting metal hollow body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210148911U true CN210148911U (en) | 2020-03-17 |
Family
ID=69754246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822196071.XU Active CN210148911U (en) | 2018-12-26 | 2018-12-26 | Core rod structure for floating supporting metal hollow body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210148911U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109454989A (en) * | 2018-12-26 | 2019-03-12 | 苏州斯莱克精密设备股份有限公司 | Mandrel structure for floating support metal hollow |
-
2018
- 2018-12-26 CN CN201822196071.XU patent/CN210148911U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109454989A (en) * | 2018-12-26 | 2019-03-12 | 苏州斯莱克精密设备股份有限公司 | Mandrel structure for floating support metal hollow |
| CN109454989B (en) * | 2018-12-26 | 2024-08-16 | 苏州斯莱克精密设备股份有限公司 | Mandrel structure for floatingly supporting metal hollow body |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3392041B1 (en) | Can decorator machine for decorating cans and corresponding method | |
| CN210148911U (en) | Core rod structure for floating supporting metal hollow body | |
| CN103639247A (en) | Thermal shaping clamp of titanium alloy thin-wall tubular part | |
| CN102923513A (en) | Paper tape adsorbing and delivering device | |
| CN209794858U (en) | novel core rod structure for floating supporting metal hollow body | |
| CN101954422B (en) | Spinning deviation-correcting method for punching-pulling steel bottle tube wall thickness | |
| CN101108400A (en) | Support rolling wheel composite structure of flattener | |
| CN109454989B (en) | Mandrel structure for floatingly supporting metal hollow body | |
| CN109454990B (en) | Mandrel structure for floatingly supporting metal hollow body | |
| CN201604044U (en) | Chuck of horizontal universal internal and external grinding machine | |
| CN205115345U (en) | Novel rolling ring structure suitable for experienced bulging equipment | |
| CN206263052U (en) | A kind of general rotation building mortion of conical thin-wall revolving meber | |
| CN102489641B (en) | Three-roll rolling backlash device for integral self-lubricated oscillating bearing | |
| CN112845783B (en) | Spin forming method and spin forming device for W-shaped metal sealing ring | |
| CN205167532U (en) | Tubular product rail mounted orthotic devices | |
| CN203666259U (en) | Hub unit mandrel | |
| CN220862428U (en) | Array radius variable press roll assembly | |
| CN218283333U (en) | Pipe grooving machine | |
| CN114311960B (en) | Gravure press look mould cylinder | |
| CN206065130U (en) | A kind of split type roll structure with oil groove | |
| CN220241041U (en) | Outer ring transferring tool for bearing polishing | |
| CN211233881U (en) | Rotary kiln barrel and wheel belt connecting structure | |
| CN212449408U (en) | Small-diameter roller for belt conveyor | |
| CN206838841U (en) | A kind of pipe fitting hemmer | |
| CN218914152U (en) | High temperature resistant and high pressure resistant bellows compensator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |