CN112537133A - Rubber cloth tensioning device for printing - Google Patents
Rubber cloth tensioning device for printing Download PDFInfo
- Publication number
- CN112537133A CN112537133A CN202011341397.2A CN202011341397A CN112537133A CN 112537133 A CN112537133 A CN 112537133A CN 202011341397 A CN202011341397 A CN 202011341397A CN 112537133 A CN112537133 A CN 112537133A
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- China
- Prior art keywords
- gear
- supporting roller
- layer
- support
- compression
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F27/00—Devices for attaching printing elements or formes to supports
- B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
- B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
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- Printing Plates And Materials Therefor (AREA)
Abstract
The invention discloses a rubber cloth tensioning device for printing, which comprises a base, a first supporting roller lifting device, a second supporting roller lifting device and a pressing roller supporting device, wherein the first supporting roller lifting device and the second supporting roller lifting device are respectively arranged at two ends of the base; the pressing roller supporting device comprises a square bracket, a synchronous motor, a first gear, a second gear, a third gear, a fourth gear, a fifth gear and a sixth gear; the first and second supporting roller lifting devices have the same structure and respectively comprise a first bracket, a screw rod, a lifting rod, a fourth gear and a fifth gear; in the transportation process, the synchronous motor drives the first rotating shaft and the second rotating shaft to synchronously rotate, so that the lifting rod is driven to ascend or descend through the fourth gear and the fifth gear, and finally the rubber cloth is tensioned. The invention can better transport the rubber blanket and prevent the rubber blanket from being damaged in the transport process.
Description
Technical Field
The invention belongs to the technical field of offset plate printing.
Background
In offset printing, a blanket is a blanket wrapped on a blanket cylinder that transfers ink from a plate to a substrate; because the rubber blanket is large in size and elastic, the rubber blanket is easily enlarged or even reduced or lost in elasticity due to incorrect operation when being transported, so that the service life of the rubber blanket is reduced, and the printing quality is possibly influenced; in the prior art, in order to solve the problem that flaws can occur on a printing stock due to pressure change of a blanket cylinder in the printing process, the elasticity of a rubber blanket is reduced, but the method reduces the transfer pressure of ink, so that insufficient coloring is caused, and the printing quality is reduced.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the problems of the prior art, the invention provides a tensioning device for a printing blanket.
The technical scheme is as follows: the invention provides a rubber cloth tensioning device for printing, which comprises a base, a first supporting roller lifting device, a second supporting roller lifting device and a pressing roller supporting device, wherein the first supporting roller lifting device and the second supporting roller lifting device are respectively arranged at two ends of the base;
the pressing roller supporting device comprises a square bracket, a synchronous motor, a first gear, a second gear, a third gear, a fourth gear, a fifth gear and a sixth gear; the square support is fixedly connected with the base, a pressing roller is arranged on the top end face of the square support, the synchronous motor is arranged in a cavity of the square support, a first gear is arranged at one end of the synchronous motor, second and third gears are arranged at two ends of the first gear, the second and third gears are meshed with the first gear, and shafts of the second and third gears are perpendicular to a shaft of the first gear, so that when the motor drives the first gear to rotate, the first gear synchronously drives the second and third gears to rotate; one end of the first rotating shaft is connected with the center of the second gear, and one end of the second rotating shaft is connected with the center of the third gear; the first and second supporting roller lifting devices have the same structure and respectively comprise a first bracket, a screw rod, a lifting rod, a fourth gear and a fifth gear; the other ends of the first rotating shaft and the second rotating shaft respectively penetrate through the square support to be connected with the fourth gear of the first supporting roller lifting device and the second supporting roller lifting device; the bottom of the fourth gear is meshed with one end of the fifth gear, the axes of the two gears are perpendicular, the screw rod penetrates through the fifth gear and is fixedly arranged between the first support and the base, a nut meshed with the screw rod in a threaded manner is arranged on the screw rod, a lifting rod is fixedly arranged on one side of the nut opposite to the first support, and the lifting rod penetrates through the top of the first support and is connected with the supporting roller; when the device is used for tensioning the rubber cloth, the rubber cloth sequentially penetrates through the top of the supporting roller on the first supporting roller lifting device, and the bottom of the pressing roller and the top of the supporting roller on the second supporting roller lifting device;
the rubber blanket comprises an inner layer and an outer layer arranged on the inner layer, the outer layer is a rubber layer, the inner layer comprises a reinforcing layer and a compression-resistant layer which are sequentially stacked, an isolation layer is arranged in the compression-resistant layer, and the isolation layer divides the compression-resistant layer into a first compression-resistant layer and a second compression-resistant layer which are unequal in thickness; the reinforcing layer comprises a plurality of pieces of woven cloth; the outer layer has a lower hardness than the inner layer.
Further, the screw rod is a ball screw rod.
Furthermore, the top of the first support is provided with a limiting hole, so that the lifting rod penetrates through the top of the first support and is connected with the supporting roller.
Further, the hardness of the base material of the pressure-resistant layer is 60 to 95 JIS-A.
Furthermore, the thickness of the first compression resistant layer is 0.1-0.2 mm, and the thickness of the second compression resistant layer is 0.05-0.15 mm.
Further, the first support is of an inverted L shape.
Has the advantages that: the invention can automatically sense the state of the rubber, and when the rubber blanket is loose, the rubber blanket can be tensioned by the invention; the rubber blanket provided by the invention improves the printing quality and reduces the printing defects.
Drawings
Fig. 1 is an overall structural view of the present invention.
Description of reference numerals: 1. a square bracket; 2. a synchronous motor; 3. a pressing roller; 4. a first gear; 5. a second gear; 6. a third gear; 7. a first rotating shaft; 8. a second rotating shaft; 9. a first bracket; 10. a screw rod; 11. a lifting rod; 12. a fourth gear; 13. a fifth gear; 14. a nut; 15. and supporting the roller.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.
As shown in fig. 1, the embodiment provides a rubber blanket tensioning device for printing, which comprises a base, a first supporting roller lifting device and a second supporting roller lifting device which are respectively arranged at two ends of the base, and a pressing roller supporting device arranged in the middle of the base;
the pressing roller supporting device comprises a square bracket 1, a synchronous motor 2, a first gear, a second gear, a third gear, a first rotating shaft and a second rotating shaft; the square support is fixedly connected with the base, a pressing roller 3 is arranged on the top end face of the square support, the synchronous motor 2 is arranged in a cavity of the square support, a first gear 4 is arranged at the top end of the synchronous motor 2, second and third gears 5 and 6 are arranged at two ends of the first gear, the second and third gears are meshed with the first gear 4, and shafts of the second and third gears are perpendicular to a shaft of the first gear, so that when the motor drives the first gear to rotate, the first gear synchronously drives the second and third gears to rotate; one end of the first rotating shaft 7 is connected with the center of the second gear, and one end of the second rotating shaft 8 is connected with the center of the third gear; the first and second supporting roller lifting devices have the same structure and respectively comprise an inverted L-shaped first bracket 9, a screw rod 10, a lifting rod, a fourth gear 12 and a fifth gear 13; the other end of the first rotating shaft (second rotating shaft) penetrates through the square support to be connected with a fourth gear 12 of a first supporting roller lifting device (first supporting roller lifting device); the bottom of the fourth gear 12 is meshed with one end of a fifth gear 15, the axes of the two gears are perpendicular, the screw rod 10 penetrates through the fifth gear and is fixedly arranged between the first support 9 and the base, a nut 14 meshed with screw threads of the screw rod is arranged on the screw rod, a lifting rod 11 is fixedly arranged on one side, opposite to the first support, of the nut 14, and the lifting rod 11 penetrates through the top of the first support and is connected with a supporting roller 15; when the device is used for tensioning the rubber blanket, the rubber blanket sequentially passes through the top of the supporting roller 15 on the first supporting roller lifting device, the bottom of the pressing roller 3 and the top of the supporting roller on the second supporting roller lifting device;
the rubber blanket comprises an inner layer and an outer layer arranged on the inner layer, the outer layer is a rubber layer, the inner layer comprises a reinforcing layer and a compression-resistant layer which are sequentially stacked, an isolation layer is arranged in the compression-resistant layer, and the isolation layer divides the compression-resistant layer into a first compression-resistant layer and a second compression-resistant layer which are unequal in thickness; the reinforcing layer comprises a plurality of pieces of textile cloth; the outer layer has a lower hardness than the inner layer.
Preferably, the screw is a ball screw.
Preferably, the top of the first support is provided with a limiting hole, so that the lifting rod penetrates through the top of the first support to be connected with the roller supporting cylinder.
Preferably, the base material hardness of the pressure-resistant layer IS 60-95 IS-A.
Preferably, the thickness of the first compression resistant layer is 0.1-0.2 mm, and the thickness of the second compression resistant layer is 0.05-0.15 mm.
Preferably, the first bracket is of an inverted L shape.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (6)
1. A rubber cloth tensioning device for printing is characterized by comprising a base, a first supporting roller lifting device and a second supporting roller lifting device which are respectively arranged at two ends of the base, and a pressing roller supporting device arranged in the middle of the base;
the pressing roller supporting device comprises a square bracket, a synchronous motor, a first gear, a second gear, a third gear, a fourth gear, a fifth gear and a sixth gear; the square support is fixedly connected with the base, a pressing roller is arranged on the top end face of the square support, the synchronous motor is arranged in a cavity of the square support, a first gear is arranged at one end of the synchronous motor, second and third gears are arranged at two ends of the first gear, the second and third gears are meshed with the first gear, and shafts of the second and third gears are perpendicular to a shaft of the first gear, so that when the motor drives the first gear to rotate, the first gear synchronously drives the second and third gears to rotate; one end of the first rotating shaft is connected with the center of the second gear, and one end of the second rotating shaft is connected with the center of the third gear; the first and second supporting roller lifting devices have the same structure and respectively comprise a first bracket, a screw rod, a lifting rod, a fourth gear and a fifth gear; the other end of the first rotating shaft penetrates through the square support to be connected with a fourth gear of the first supporting roller lifting device, and the other end of the second rotating shaft penetrates through the square support to be connected with a fourth gear of the second supporting roller lifting device; the bottom of the fourth gear is meshed with one end of the fifth gear, the axes of the two gears are perpendicular, the screw rod penetrates through the fifth gear and is fixedly arranged between the first support and the base, a nut meshed with the screw rod in a threaded manner is arranged on the screw rod, a lifting rod is fixedly arranged on one side of the nut opposite to the first support, and the lifting rod penetrates through the top of the first support and is connected with the supporting roller; when the device is used for tensioning the rubber cloth, the rubber cloth sequentially penetrates through the top of the supporting roller on the first supporting roller lifting device, and the bottom of the pressing roller and the top of the supporting roller on the second supporting roller lifting device;
the rubber blanket comprises an inner layer and an outer layer arranged on the inner layer, the outer layer is a rubber layer, the inner layer comprises a reinforcing layer and a compression-resistant layer which are sequentially stacked, an isolation layer is arranged in the compression-resistant layer, and the isolation layer divides the compression-resistant layer into a first compression-resistant layer and a second compression-resistant layer which are unequal in thickness; the reinforcing layer comprises a plurality of pieces of woven cloth; the outer layer has a lower hardness than the inner layer.
2. A printing blanket tensioning device as claimed in claim 1, wherein said screw is a ball screw.
3. A printing blanket tensioning device as claimed in claim 1, wherein the top of the first support is provided with a limiting hole so that the lifting rod passes through the top of the first support to connect with the support cylinder.
4. The printing blanket tensioning device as claimed in claim 1, wherein the base material hardness of the pressure-resistant layer is 60 to 95 JIS-a.
5. The printing blanket tensioning device as claimed in claim 1, wherein the first compression resistant layer has a thickness of 0.1-0.2 mm and the second compression resistant layer has a thickness of 0.05-0.15 mm.
6. A printing blanket tensioning device according to claim 1, wherein said first support is of inverted L-shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011341397.2A CN112537133A (en) | 2020-11-25 | 2020-11-25 | Rubber cloth tensioning device for printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011341397.2A CN112537133A (en) | 2020-11-25 | 2020-11-25 | Rubber cloth tensioning device for printing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112537133A true CN112537133A (en) | 2021-03-23 |
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ID=75016111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011341397.2A Pending CN112537133A (en) | 2020-11-25 | 2020-11-25 | Rubber cloth tensioning device for printing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112537133A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113601966A (en) * | 2021-08-02 | 2021-11-05 | 创越新材料(泰州)有限公司 | Positioning device for waxing of printing machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3673023A (en) * | 1970-06-24 | 1972-06-27 | Grace W R & Co | Process of producing reinforced laminate |
| CN1052078A (en) * | 1989-12-01 | 1991-06-12 | 海德堡印刷机械股份公司 | The printing machine series cylinder of rotary press |
| CN1717334A (en) * | 2002-10-28 | 2006-01-04 | 株式会社明治橡胶化成 | Printing blanket |
| ATE313508T1 (en) * | 1999-11-13 | 2006-01-15 | Erhardt & Leimer Gmbh | DEVICE AND METHOD FOR GUIDING A TRANSVERTICALLY STABLE WEB |
| CN211393263U (en) * | 2019-12-24 | 2020-09-01 | 河南省世纪天泰印务有限公司 | Rubber sheet tensioning device for a blanket cylinder of a printing press |
-
2020
- 2020-11-25 CN CN202011341397.2A patent/CN112537133A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3673023A (en) * | 1970-06-24 | 1972-06-27 | Grace W R & Co | Process of producing reinforced laminate |
| CN1052078A (en) * | 1989-12-01 | 1991-06-12 | 海德堡印刷机械股份公司 | The printing machine series cylinder of rotary press |
| ATE313508T1 (en) * | 1999-11-13 | 2006-01-15 | Erhardt & Leimer Gmbh | DEVICE AND METHOD FOR GUIDING A TRANSVERTICALLY STABLE WEB |
| CN1717334A (en) * | 2002-10-28 | 2006-01-04 | 株式会社明治橡胶化成 | Printing blanket |
| CN211393263U (en) * | 2019-12-24 | 2020-09-01 | 河南省世纪天泰印务有限公司 | Rubber sheet tensioning device for a blanket cylinder of a printing press |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113601966A (en) * | 2021-08-02 | 2021-11-05 | 创越新材料(泰州)有限公司 | Positioning device for waxing of printing machine |
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Application publication date: 20210323 |