CN111452487A - Printing roller capable of buffering printing pressure - Google Patents
Printing roller capable of buffering printing pressure Download PDFInfo
- Publication number
- CN111452487A CN111452487A CN202010472261.9A CN202010472261A CN111452487A CN 111452487 A CN111452487 A CN 111452487A CN 202010472261 A CN202010472261 A CN 202010472261A CN 111452487 A CN111452487 A CN 111452487A
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- CN
- China
- Prior art keywords
- sleeve
- permanent magnet
- strip
- printing
- excitation
- 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.)
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- 230000003139 buffering effect Effects 0.000 title claims abstract description 13
- 230000005284 excitation Effects 0.000 claims abstract description 33
- 230000000712 assembly Effects 0.000 claims abstract description 12
- 238000000429 assembly Methods 0.000 claims abstract description 12
- 239000000725 suspension Substances 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 238000000034 method Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/08—Cylinders
- B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
- B41F13/34—Cylinder lifting or adjusting devices
- B41F13/38—Cylinder lifting or adjusting devices electrically or magnetically operated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Abstract
The invention provides a printing roller capable of buffering printing pressure, and belongs to the technical field of printing equipment. A magnetic suspension structure is arranged between the two ends of the sleeve and the body respectively, the magnetic suspension structure comprises a plurality of first permanent magnetic strips which are uniformly distributed on the inner wall of the sleeve in the circumferential direction, a plurality of first excitation assemblies which correspond to the first permanent magnetic strips one by one are arranged on the outer circumferential surface of the body, each first excitation assembly comprises a first armature framework and a first coil wound on the first armature framework, each first excitation assembly can generate Lorentz force in the radial direction of the sleeve, a connecting line between two magnetic poles of each first permanent magnetic strip is positioned on the radial line of the sleeve, a gap is formed between the outer end of each first armature framework and the inner end of each first permanent magnetic strip, and a gap is formed between each adjacent first permanent magnetic strip; the first permanent magnet strip can generate attraction force with the corresponding first armature framework, and the first coil is connected with an external power supply. The invention has the advantages of easing the printing pressure, improving the printing quality and the like.
Description
Technical Field
The invention belongs to the technical field of printing equipment, and relates to a printing roller capable of buffering printing pressure.
Background
The printing machine is a printing device which is pressed on a printing carrier after paint is adhered to pictures and texts on the peripheral surface of a printing roller, for the printing roller, the printing pressure between the printing roller and the printing carrier determines the printing quality such as the definition of the pictures and the texts, the adjustment of the printing pressure in the prior art is realized by adjusting the gap between the rollers, the adjustment process is very difficult due to the extremely small gap, the adjustment can only be maintained for a certain time, the printing pressure can be gradually reduced along with the lapse of the service time under the action of inevitable factors such as abrasion, and the quality, particularly the uniformity of a printed product is greatly influenced.
Disclosure of Invention
The present invention has been made in view of the above problems occurring in the prior art, and an object of the present invention is to provide a printing roller capable of buffering a printing pressure, and to provide a printing roller having a function of buffering a printing pressure, thereby improving a printing effect.
The purpose of the invention can be realized by the following technical scheme: a printing roller capable of buffering printing pressure is characterized by comprising a body and a sleeve sleeved on the body, wherein a magnetic suspension structure is arranged between two ends of the sleeve and the body respectively, the magnetic suspension structure comprises a plurality of first permanent magnetic strips which are circumferentially and uniformly distributed on the inner wall of the sleeve, a plurality of first excitation assemblies which correspond to the first permanent magnetic strips one by one are arranged on the outer peripheral surface of the body, each first excitation assembly comprises a first armature framework and a first coil wound on the first armature framework, each first excitation assembly can generate Lorentz force in the radial direction of the sleeve, a connecting line between two magnetic poles of each first permanent magnetic strip is positioned on the radial line of the sleeve, a gap is formed between the outer end of each first armature framework and the inner end of each first permanent magnetic strip, and a gap is formed between adjacent first permanent magnetic strips; the first permanent magnet strip can generate attraction force with the corresponding first armature framework, and the first coil is connected with an external power supply.
For the printing roller, the uniformity of the printing pressure is very important, through the scheme, in the rotating process of the body, the outer wall surface of the body and the inner wall surface of the sleeve can be mutually absorbed to enable the outer wall surface of the body and the inner wall surface of the sleeve to be in a suspension state, but because gaps are formed between the adjacent first permanent magnetic strips and the adjacent first armature frameworks, the body and the sleeve cannot easily move relatively, the body and the sleeve rotate synchronously, but when the printing pressure on the sleeve is large, the position adjustment in the radial line direction can be generated between the adjacent first permanent magnetic strips and the adjacent first armature frameworks, so that the unevenness and the variation of the printing pressure are alleviated, and the printing pressure is relatively uniform and constant.
In the printing roller capable of buffering the printing pressure, two groups of second excitation assemblies are arranged in the middle of the body, each second excitation assembly comprises a plurality of second armature frameworks which are circumferentially and uniformly arranged on the body, second coils are wound on the second armature frameworks, each second armature framework corresponds to one second permanent magnet strip, the second permanent magnet strips are positioned on the outer sides of the second permanent magnet frameworks, the second permanent magnet strips are fixed on the inner wall of the sleeve, a connecting line between two magnetic poles of each second permanent magnet strip is perpendicular to the axis of the sleeve, each second coil is connected with an external power supply after being connected in parallel, and an ammeter is connected in series on a main line after each second coil is connected in parallel; the two groups of second excitation assemblies are provided with a plurality of third permanent magnetic strips, the third permanent magnetic strips are fixed on the inner wall of the sleeve, and a connecting line between two magnetic poles of the third permanent magnetic strips is parallel to the axis of the sleeve.
In order to avoid the problem that the printing roller is affected by unbalanced external force due to the fact that the position of the sleeve and the body in the axis direction shakes, a second excitation assembly capable of limiting the position between the sleeve and the body in the axis direction is arranged between the body and the sleeve and matched with each third permanent magnet strip, repulsive force for positioning the body and the sleeve can be generated in the axis direction, particularly, the two sets of second excitation assemblies and the third permanent magnet strips repel each other, the axis direction between the body and the sleeve cannot be easily displaced, and the stability of the printing roller is improved.
In order to determine whether the body and the sleeve rotate relatively, an ammeter is connected in a loop formed by a main line formed by connecting an external power supply and each second coil in parallel, namely the ammeter, the external power supply and each second coil connected in parallel form a loop connected in series, so that the total current in each second coil is displayed on the ammeter.
The reason that the second coil current changes lies in, the magnetic induction line that the second permanent-magnet strip produced is cut by the second coil, and the reason of cutting both have taken place relative displacement promptly, and the reason that can not cause the moment of torsion to the sleeve under the second coil circular telegram circumstances lies in: the wire winding direction of two sets of second coils is opposite, the circular telegram direction is the same, and both are opposite to the moment of torsion that the sleeve produced, offset each other, and the wire winding direction of two sets of circular telegram coils is opposite, the circular telegram direction is the same just can produce opposite magnetic pole, then acts on the third permanent-magnet strip, all forms the repulsion to the third magnetic stripe.
In the printing roller capable of buffering the printing pressure, the first permanent magnet strips in the same ring, the first excitation group in the same ring and the second excitation group in the same ring are wrapped by resin and then fixedly connected with the body, and the second permanent magnet strips in the same ring and the third permanent magnet strips in the same ring are wrapped by resin and then fixedly connected with the sleeve. This improves the insulation performance and the protection of the individual parts.
The connection of the wire and the external power supply is completed through the electric brush arranged on the body.
Drawings
Fig. 1 is a schematic view of the structure of the present printing roll.
Fig. 2 is a left side view of fig. 1.
In the figure, 1, a body; 2. a sleeve; 3. a first permanent magnet strip; 4. a first excitation assembly; 5. a second excitation assembly; 6. a second permanent magnet strip; 7. and a third permanent magnet strip.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, the magnetic suspension structure comprises a body 1 and a sleeve 2 sleeved on the body 1, a magnetic suspension structure is arranged between two ends of the sleeve 2 and the body 1 respectively, the magnetic suspension structure comprises a plurality of first permanent magnetic strips 3 which are circumferentially and uniformly distributed on the inner wall of the sleeve 2, a plurality of first excitation assemblies 4 which correspond to the first permanent magnetic strips 3 one by one are arranged on the outer circumferential surface of the body 1, each first excitation assembly 4 comprises a first armature framework and a first coil wound on the first armature framework, each first excitation assembly 4 can generate lorentz force in the radial direction of the sleeve 2, a connecting line between two magnetic poles of each first permanent magnetic strip 3 is positioned on the radial line of the sleeve 2, a gap is formed between the outer end of each first armature framework and the inner end of each first permanent magnetic strip 3, and a gap is formed between adjacent first permanent magnetic strips 3; the first permanent magnet strips 3 can generate attraction force with the corresponding first armature frameworks, and the first coil is connected with an external power supply.
For the printing roller, the uniformity of the printing pressure is very important, through the scheme, the body 1 can be in a suspension state due to the fact that the outer wall surface of the body 1 and the inner wall surface of the sleeve 2 can absorb each other in the rotating process, but the body 1 and the sleeve 2 cannot move easily relative to each other due to the fact that gaps are formed between the adjacent first permanent magnet strips 3 and the adjacent first armature frameworks, the body 1 and the sleeve 2 rotate synchronously, but when the printing pressure applied to the sleeve 2 is large, position adjustment in the radial line direction can be achieved between the adjacent first permanent magnet strips 3 and the adjacent first armature frameworks, so that the unevenness and the variation of the printing pressure are alleviated, and the printing pressure is relatively uniform and constant.
Two groups of second excitation assemblies 5 are arranged in the middle of the body 1, each second excitation assembly 5 comprises a plurality of second armature frameworks which are circumferentially and uniformly arranged on the body 1, second coils are wound on the second armature frameworks, each second armature framework corresponds to one second permanent magnetic strip 6, each second permanent magnetic strip 6 is positioned on the outer side of the second permanent magnetic framework, each second permanent magnetic strip 6 is fixed on the inner wall of the sleeve 2, a connecting line between two magnetic poles of each second permanent magnetic strip 6 is vertical to the axis of the sleeve 2, each second coil is connected with an external power supply after being connected in parallel, and a main line of each second coil after being connected in parallel is connected with an ammeter in series; the two groups of second excitation assemblies 5 are provided with a plurality of third permanent magnet strips 7, the third permanent magnet strips 7 are fixed on the inner wall of the sleeve 2, and a connecting line between two magnetic poles of the third permanent magnet strips 7 is parallel to the axis of the sleeve 2. In order to avoid the problem that the printing roller is shaken in the position of the axis direction between the sleeve 2 and the body 1, and the printing roller is influenced by unbalanced external force, a second excitation assembly 5 which can limit the position between the sleeve 2 and the body 1 in the axis direction is arranged between the body 1 and the sleeve 2 and is matched with each third permanent magnet strip 7, and repulsion force for realizing positioning of the body 1 and the sleeve 2 in the axis direction can be generated, specifically, the two groups of second excitation assemblies 5 are repelled with the third permanent magnet strips 7, so that the axis direction between the body 1 and the sleeve 2 cannot be easily displaced, and the stability of the printing roller is improved.
In order to determine whether the body 1 and the sleeve 2 are relatively rotated, an ammeter is connected in a loop formed by a main line formed by connecting an external power supply and each second coil in parallel, namely, the ammeter, the external power supply and each second coil connected in parallel form a loop connected in series, so that the total current in each second coil is displayed on the ammeter, and in the process that the voltage of the external power supply is not kept constant, if the display data of the ammeter is changed, namely, the sleeve 2 and the body 1 are relatively rotated, the problem needs to be solved by adjusting the increase of the electrified voltage of the first coil, but the requirement of the printing pressure buffering effect needs to be considered, and the connection between a lead and the external power supply is completed through a brush arranged on the body 1.
The reason why the second coil current changes is that the magnetic induction line generated by the second permanent magnet strip 6 is cut by the second coil, the cutting reason is that the two are relatively displaced, and the reason why the torque cannot be caused to the sleeve 2 under the condition that the second coil is electrified is that: the wire winding direction of two sets of second coils is opposite, the circular telegram direction is the same, and both are opposite to the moment of torsion that sleeve 2 produced, offset each other, and the wire winding direction of two sets of circular telegram coils is opposite, the circular telegram direction is the same just can produce opposite magnetic pole, then acts on third permanent-magnet strip 7, all forms the repulsion to the third magnetic stripe.
The first permanent magnet strips 3 in the same ring, the first excitation group in the same ring and the second excitation group in the same ring are wrapped by resin and then fixedly connected with the body 1, and the second permanent magnet strips 6 in the same ring and the third permanent magnet strips 7 in the same ring are wrapped by resin and then fixedly connected with the sleeve 2. This improves the insulation performance and the protection of the individual parts.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (3)
1. The printing roller capable of buffering the printing pressure is characterized by comprising a body (1) and a sleeve (2) sleeved on the body (1), wherein a magnetic suspension structure is arranged between two ends of the sleeve (2) and the body (1) respectively, the magnetic suspension structure comprises a plurality of first permanent magnetic strips (3) which are uniformly distributed on the inner wall of the sleeve (2) in the circumferential direction, a plurality of first excitation assemblies (4) which correspond to the first permanent magnetic strips (3) one by one are arranged on the outer circumferential surface of the body (1), each first excitation assembly (4) comprises a first armature framework and a first coil wound on the first armature framework, each first excitation assembly (4) can generate Lorentz force in the radial direction of the sleeve (2), a connecting line between two magnetic poles of each first permanent magnetic strip (3) is positioned on the radial line of the sleeve (2), a gap is formed between the outer end of each first armature framework and the inner end of each first permanent magnetic strip (3), gaps are reserved between the adjacent first permanent magnet strips (3); the first permanent magnet strip (3) can generate attraction force with the corresponding first armature framework, and the first coil is connected with an external power supply.
2. The printing roller capable of buffering the printing pressure according to claim 1, wherein two groups of second excitation assemblies (5) are arranged in the middle of the body (1), each second excitation assembly (5) comprises a plurality of second armature frameworks which are circumferentially and uniformly arranged on the body (1), each second armature framework is wound with a second coil, each second armature framework corresponds to one second permanent magnet strip (6), each second permanent magnet strip (6) is positioned on the outer side of the second permanent magnet framework, each second permanent magnet strip (6) is fixed on the inner wall of the sleeve (2), a connecting line between two magnetic poles of each second permanent magnet strip (6) is perpendicular to the axis of the sleeve (2), each second coil is connected with an external power supply after being connected in parallel, each group of second excitation assemblies (5) is provided with a plurality of third permanent magnet strips (7), and each third permanent magnet strip (7) is fixed on the inner wall of the sleeve (2), and a connecting line between two magnetic poles of the third permanent magnetic strip (7) is parallel to the axis of the sleeve (2).
3. The printing roller capable of buffering printing pressure according to claim 2, wherein the first permanent magnet strip (3) in the same ring, the first excitation group in the same ring and the second excitation group in the same ring are wrapped by resin and then fixedly connected with the body (1), and the second permanent magnet strip (6) in the same ring and the third permanent magnet strip (7) in the same ring are wrapped by resin and then fixedly connected with the sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010472261.9A CN111452487A (en) | 2020-05-29 | 2020-05-29 | Printing roller capable of buffering printing pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010472261.9A CN111452487A (en) | 2020-05-29 | 2020-05-29 | Printing roller capable of buffering printing pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111452487A true CN111452487A (en) | 2020-07-28 |
Family
ID=71675198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010472261.9A Pending CN111452487A (en) | 2020-05-29 | 2020-05-29 | Printing roller capable of buffering printing pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111452487A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117885437A (en) * | 2024-03-14 | 2024-04-16 | 珠海正洋印务有限公司 | Clutch mechanism of imprinting device of printing machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206913886U (en) * | 2017-06-21 | 2018-01-23 | 佛山格尼斯磁悬浮技术有限公司 | Accurate print roller |
| US20180050533A1 (en) * | 2015-09-03 | 2018-02-22 | Korea Institute Of Macinery & Materials | Roller module with magnetic bearings and permanent magnets |
| CN212313018U (en) * | 2020-05-29 | 2021-01-08 | 湖北科技学院 | Printing roller capable of buffering printing pressure |
-
2020
- 2020-05-29 CN CN202010472261.9A patent/CN111452487A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180050533A1 (en) * | 2015-09-03 | 2018-02-22 | Korea Institute Of Macinery & Materials | Roller module with magnetic bearings and permanent magnets |
| CN206913886U (en) * | 2017-06-21 | 2018-01-23 | 佛山格尼斯磁悬浮技术有限公司 | Accurate print roller |
| CN212313018U (en) * | 2020-05-29 | 2021-01-08 | 湖北科技学院 | Printing roller capable of buffering printing pressure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117885437A (en) * | 2024-03-14 | 2024-04-16 | 珠海正洋印务有限公司 | Clutch mechanism of imprinting device of printing machine |
| CN117885437B (en) * | 2024-03-14 | 2024-05-14 | 珠海正洋印务有限公司 | Clutch mechanism of imprinting device of printing machine |
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Application publication date: 20200728 |