CN111941999A - Automatic pressure adjusting device for rubber roller of rotary offset press - Google Patents
Automatic pressure adjusting device for rubber roller of rotary offset press Download PDFInfo
- Publication number
- CN111941999A CN111941999A CN202010907014.7A CN202010907014A CN111941999A CN 111941999 A CN111941999 A CN 111941999A CN 202010907014 A CN202010907014 A CN 202010907014A CN 111941999 A CN111941999 A CN 111941999A
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- China
- Prior art keywords
- roller
- rubber roller
- hinged
- swing arm
- copying
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- 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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- 238000007645 offset printing Methods 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
The invention discloses an automatic rubber roller pressure adjusting device of a rotary offset press, which comprises a plate roller (9), a first copying rubber roller (10), a second copying rubber roller (8), a third copying rubber roller (7), a first swing arm (3), a second swing arm (4), a third swing arm (5) and three groups of electric cylinders (1); the three groups of electric cylinders (1) are respectively hinged with the frame through an electric cylinder rotating shaft (2); the middle parts of the three swing arms are hinged with the frame through rotating shafts; one end of the swing arm is hinged with a roller shaft corresponding to the forme roller; the other end is hinged with the head of a push rod of one electric cylinder (1); the pressure value between the rubber roller and the plate roller can be automatically adjusted, and the manual adjustment of an equipment mechanism is not needed. The technical requirements of rubber roller pressure adjustment on operators can be eliminated, the operation is simplified, and the adjustment efficiency is improved. Meanwhile, the diameter of the rubber roller can be automatically sensed, the rubber roller with the service life is alarmed, and a user is prompted to replace the rubber roller.
Description
Technical Field
The invention belongs to the technical field of mechanical structures, particularly relates to the technical field of printing machinery, and particularly relates to an automatic pressure adjusting device for a rubber roller of a rotary offset press.
Background
In the existing rotary printing equipment, in order to ensure the printing quality in the printing process, the pressure between a rubber roller (forme rubber roller) and a forme roller needs to be adjusted to be a proper pressure value, the pressure adjustment between the rubber roller and the forme roller is manual at present, and the clutch between the rubber roller and the forme roller is moved to be used as a cylinder structure. The accuracy of the pressure adjustment directly affects the quality of the printed matter. The current configuration relies heavily on the experience of the operator to make the adjustments. The adjustment technology is complex, and the requirements on the skills and experiences of technicians are high.
Disclosure of Invention
The invention aims to provide an automatic rubber roller pressure adjusting device of a rotary offset press, which can automatically adjust the pressure value between a rubber roller and a plate roller and does not need to manually adjust an equipment mechanism. Meanwhile, the diameter of the rubber roller can be automatically sensed, the rubber roller with the service life is alarmed, and a user is prompted to replace the rubber roller.
The technical scheme provided by the invention is as follows:
an automatic rubber roller pressure adjusting device of a rotary offset press comprises a plate roller 9, a first copying rubber roller 10, a second copying rubber roller 8, a third copying rubber roller 7, a first swing arm 3, a second swing arm 4, a third swing arm 5 and three groups of electric cylinders 1;
the three groups of electric cylinders 1 are respectively hinged with the frame through an electric cylinder rotating shaft 2;
the middle part of the first swing arm 3 is hinged with the frame through a first rotating shaft 11; one end of the first swing arm 3 is hinged with a roller shaft of the first copying roller 10; the other end is hinged with the head of a push rod of the first electric cylinder 1;
the middle part of the second swing arm 4 is hinged with the frame through a first rotating shaft 11; one end of the second swing arm 4 is hinged with a roller shaft of a second copying roller 8; the other end is hinged with the head of a push rod of a second electric cylinder 1;
the middle part of the third swing arm 5 is hinged with the frame through a second rotating shaft 6; one end of the third swing arm 5 is hinged with a roller shaft of a third copying roller 7; the other end is hinged with the head of a push rod of a third electric cylinder 1;
the axes of the hinged shafts of the head of each push rod and the three swing arms are parallel to the axes of the electric cylinder rotating shaft 2, the first rotating shaft 11, the second rotating shaft 6, the plate roller 9, the first plate copying rubber roller 10, the second plate copying rubber roller 8 and the third plate copying rubber roller 7.
The axis of a hinge shaft for hinging the electric cylinder rotating shaft 2 with the frame deviates from the axis of the push rod.
According to the technical scheme provided by the invention, the automatic rubber roller pressure adjusting device for the rotary offset printing machine can automatically adjust the pressure value between the rubber roller and the plate roller, and does not need to manually adjust an equipment mechanism. The technical requirements of rubber roller pressure adjustment on operators can be eliminated, the operation is simplified, and the adjustment efficiency is improved. Meanwhile, the diameter of the rubber roller can be automatically sensed, the rubber roller with the service life is alarmed, and a user is prompted to replace the rubber roller.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an automatic rubber roller pressure adjusting device of a rotary offset printing press according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, an automatic rubber roller pressure adjusting device for a rotary offset printing press comprises a plate roller 9, a first forme roller 10, a second forme roller 8, a third forme roller 7, a first swing arm 3, a second swing arm 4, a third swing arm 5 and three groups of electric cylinders 1; the three groups of electric cylinders 1 are respectively hinged with the frame through an electric cylinder rotating shaft 2; the frame herein refers to a frame of a rotary offset printing press. The axis of a hinge shaft for hinging the electric cylinder rotating shaft 2 with the frame deviates from the axis of the push rod, and the fixed bolt can be changed into a pin shaft, namely the electric cylinder rotating shaft 2, by utilizing the existing mounting hole. Therefore, the structure design and the installation are convenient.
The middle part of the first swing arm 3 is hinged with the frame through a first rotating shaft 11; the first rotary shaft 11 is a support sleeve arranged on two sides of the frame and fixed with the end face of the frame, and a rotary roller is arranged in the support sleeve. One end of the first swing arm 3 is hinged with a roller shaft of the first copying roller 10; the other end is hinged with the head of a push rod of the first electric cylinder 1; this example is the electric cylinder 1 at the upper right side in the figure. The first swing arm 3 specifically includes two support arms, the two support arms form a V-shaped included angle of about 120 degrees, and the end portions of the two support arms are the "one end" and the "other end" of the first swing arm 3 described above, respectively.
The middle part of the second swing arm 4 is hinged with the frame through a first rotating shaft 11; one end of the second swing arm 4 is hinged with a roller shaft of a second copying roller 8; the other end is hinged with the head of a push rod of a second electric cylinder 1; this example is the electric cylinder 1 on the lower right side in the figure. Specifically, the second swing arm 4 includes two support arms, the included angle between the two support arms is about 150 degrees, and the end portions of the two support arms are the "one end" and the "the other end" of the second swing arm 4 described above, respectively.
The middle part of the third swing arm 5 is hinged with the frame through a second rotating shaft 6; the second rotating shaft 6 is a supporting sleeve arranged on two sides of the frame and fixed with the end face of the frame, and a rotating roller is arranged in the supporting sleeve. One end of the third swing arm 5 is hinged with a roller shaft of a third copying roller 7; the other end is hinged with the head of a push rod of a third electric cylinder 1; this example is the left electric cylinder 1 in the figure. The third swing arm 5 specifically includes two support arms, the included angle between the two support arms is about 60 degrees, and the end portions of the two support arms are the "one end" and the "the other end" of the third swing arm 5 described above, respectively.
Meanwhile, the axes of the hinged shafts of the head of each push rod and the three swing arms are parallel to the axes of the electric cylinder rotating shaft 2, the first rotating shaft 11, the second rotating shaft 6, the plate roller 9, the first plate roller 10, the second plate roller 8 and the third plate roller 7.
In this example, the electric cylinder 1 is driven by a servo motor and can extend and contract forward and backward. Because the electric cylinder 1 is hinged with the swing arm through the hinge, the swing arm is driven to rotate around the rotation center, and the forme roller hinged to the other end of the swing arm is driven to contact with or separate from the forme roller 9.
As shown in fig. 1, taking the second forme roller 8 as an example, the first forme roller 10 and the third forme roller 7 have the same working principle as the second forme roller 8. When the second copying rubber roller 8 contacts (i.e. is pressed) with the plate roller 9, the working mode is as follows, at the beginning, the second copying rubber roller 8 is in a non-contact state with the surface of the plate roller 9, the electric cylinder 1 is switched to a torque working mode, the electric cylinder 1 is a linear motion device driven by a servo motor, the tail part of a mechanism of the electric cylinder 1 is the servo motor, and the servo motor is converted into linear motion through the mechanism. The servo motor drive can work in two working modes, the first mode is a position mode, and the servo motor stops rotating after reaching a specified position; the other is a torque working mode, namely, after the rotation torque is preset, the actuating element is driven to move, and after resistance is met and the set load torque is reached, the servo motor stops rotating. The specific control of the servo motor such as driving, torque control, position change amount control and the like belongs to the common knowledge and is not described in detail.
When the second forme roller 8 is disengaged (i.e. is free from pressure) from the forme roller 9, the working mode is as follows: the second copying rubber roller 8 and the surface of the plate roller 9 are in a contact state, the electric cylinder 1 is switched to a position working mode, the electric cylinder 1 contracts to drive the second swing arm 4 to rotate clockwise, the second copying rubber roller 8 and the surface of the plate roller 9 are separated, after a set displacement distance is reached, the motor stops working, and the separation action is finished at the moment. The separation and pressing amount of the second forme roller 8 and the forme roller 9 can be controlled by changing the position input value under the motor position mode.
The diameter of the rubber roller can be automatically sensed, the rubber roller with the service life is alarmed, and a user is prompted to replace the rubber roller. Specifically, the servo motor is adopted for driving, so that the diameter abrasion condition of the rubber roller can be indirectly calculated according to the final combined pressure position variation, equipment has certain intelligent sensing capability, potential equipment problems can be pre-judged, and operators are prompted to prepare and replace spare rubber rollers.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (2)
1. The automatic rubber roller pressure adjusting device of the rotary offset press is characterized by comprising a plate roller (9), a first copying rubber roller (10), a second copying rubber roller (8), a third copying rubber roller (7), a first swing arm (3), a second swing arm (4), a third swing arm (5) and three groups of electric cylinders (1);
the three groups of electric cylinders (1) are respectively hinged with the frame through an electric cylinder rotating shaft (2);
the middle part of the first swing arm (3) is hinged with the frame through a first rotating shaft (11); one end of the first swing arm (3) is hinged with a roller shaft of the first copying roller (10); the other end is hinged with the head of a push rod of the first electric cylinder (1);
the middle part of the second swing arm (4) is hinged with the frame through a first rotating shaft (11); one end of the second swing arm (4) is hinged with a roll shaft of the second forme copying roller (8); the other end is hinged with the head of a push rod of a second electric cylinder (1);
the middle part of the third swing arm (5) is hinged with the frame through a second rotating shaft (6); one end of the third swing arm (5) is hinged with a roller shaft of a third copying roller (7); the other end is hinged with the head of a push rod of the third electric cylinder (1);
the axes of the hinged shafts of the head of each push rod and the three swing arms are parallel to the axes of the electric cylinder rotating shaft (2), the first rotating shaft (11), the second rotating shaft (6), the plate roller (9), the first plate leaning rubber roller (10), the second plate leaning rubber roller (8) and the third plate leaning rubber roller (7).
2. The automatic pressure regulator for rubber roller of rotary offset press as claimed in claim 1, wherein the axis of the hinge shaft for connecting the rotary shaft (2) of the electric cylinder with the frame deviates from the axis of the push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010907014.7A CN111941999A (en) | 2020-09-01 | 2020-09-01 | Automatic pressure adjusting device for rubber roller of rotary offset press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010907014.7A CN111941999A (en) | 2020-09-01 | 2020-09-01 | Automatic pressure adjusting device for rubber roller of rotary offset press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111941999A true CN111941999A (en) | 2020-11-17 |
Family
ID=73367958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010907014.7A Withdrawn CN111941999A (en) | 2020-09-01 | 2020-09-01 | Automatic pressure adjusting device for rubber roller of rotary offset press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111941999A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113085365A (en) * | 2021-03-22 | 2021-07-09 | 江苏如钰机械制造有限公司 | Split double-sided double-color offset press |
-
2020
- 2020-09-01 CN CN202010907014.7A patent/CN111941999A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113085365A (en) * | 2021-03-22 | 2021-07-09 | 江苏如钰机械制造有限公司 | Split double-sided double-color offset press |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201117 |