CN215321295U - Water applying roller of offset press, water mixing roller and plate cylinder clutch pressure device - Google Patents
Water applying roller of offset press, water mixing roller and plate cylinder clutch pressure device Download PDFInfo
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- CN215321295U CN215321295U CN202023195110.8U CN202023195110U CN215321295U CN 215321295 U CN215321295 U CN 215321295U CN 202023195110 U CN202023195110 U CN 202023195110U CN 215321295 U CN215321295 U CN 215321295U
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- arm support
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- dampening
- roller arm
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Abstract
The utility model discloses a device for simultaneously engaging and disengaging a dampening roller, a dampening string roller and a printing plate cylinder of an offset press, which comprises a dampening roller arm frame, an engaging and disengaging mechanism and a pressure adjusting mechanism. Two end shaft heads of the water mixing roller are respectively provided with a copper sleeve; the dampening roller arm support comprises a first dampening roller arm support and a second dampening roller arm support; the first dampening roller arm support is rotatably sleeved on the copper sleeve, and the front end and the rear end of the top surface of the first dampening roller arm support are provided with a front lug and a rear lug in a one-to-one correspondence manner; the second dampening roller arm support is divided into an upper part and a lower part of a second arm support through a U-shaped groove; the lower part of the second arm support is virtually sleeved on the copper sleeve and is hinged with a front lug of the first water application roller arm support, so that a rear lug of the first water application roller arm support is positioned in the U-shaped groove; the clutch mechanism comprises a clutch cylinder hinged with a rear lug of the first water application roller arm frame and a backer screw arranged on the inner side surface of the rear lug; the pressure adjusting mechanism comprises a pressure adjusting motor, a screw rod, a movable backrest and a limit pin. The utility model not only saves power, but also reduces installation space.
Description
Technical Field
The utility model relates to a device for simultaneously engaging and disengaging a dampening roller, a dampening string roller and a printing plate cylinder of an offset press.
Background
In the water path of the existing offset printing machine, the clutch mechanism of the dampening roller can only realize the clutch of the dampening roller 20 and the plate cylinder 30. In the clutch pressing process of the dampening roller 20 and the plate cylinder 30, the dampening roller 20 and the dampening string roller 10 are always kept connected (shown in figures 1a and 1b), so that ink carried on the dampening string roller can be returned to the dampening string roller, and the dampening string roller can return the ink to the metering roller and the water bucket roller in sequence when the dampening string roller is pressed next time, so that the whole water path is provided with the ink. And because the ink attached to each roller affects the stability of water supply of the water path, thereby affecting the color consistency of the ink on the printed sheet. In order to avoid the above situation, the dampening roller needs to be pressed away from the dampening cylinder when being pressed away from the plate cylinder, and in the conventional design, if the dampening roller needs to be pressed away from the plate cylinder and the dampening cylinder, an eccentric bearing seat and an air cylinder are arranged on each two rollers to provide power, so that the two air cylinders are needed to provide power.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a device for simultaneously engaging and disengaging a dampening roller, a dampening string roller and a plate cylinder of an offset press, which not only saves power, but also reduces the installation space.
The purpose of the utility model is realized as follows: a dampening roller of an offset press is simultaneously in clutch-pressing arrangement with a dampening string roller and a printing plate roller, and comprises the printing plate roller, the dampening string roller, a dampening string roller arm frame, the dampening string roller, a clutch mechanism and a pressure adjusting mechanism;
the printing plate cylinder is fixedly bridged between two side wall plates of the offset press;
the dampening vibrator roller is fixedly bridged between two side wall plates of the offset press, and two end shaft heads of the dampening vibrator roller are respectively provided with a copper sleeve;
the dampening roller arm support comprises a first dampening roller arm support and a second dampening roller arm support; wherein the content of the first and second substances,
the first dampening roller arm support is arranged close to the inner side face of the wallboard, a hole with the diameter matched with the outer diameter of the copper sleeve is formed in the center of the surface of the first dampening roller arm support and is rotatably sleeved on the copper sleeve, and a front lug and a rear lug are arranged at the front end of the top surface and the rear end of the top surface of the first dampening roller arm support in a one-to-one correspondence manner;
the second dampening roller arm support is divided into a second arm support upper part and a second arm support lower part by arranging a horizontal U-shaped groove in the middle of the rear side surface; the upper part of the second arm support is also arranged close to the inner side surface of the wallboard, and the center of the surface of the upper part of the second arm support is provided with a water roller mounting hole; the lower part of the second arm support is integrally connected to the lower end of the inner side of the upper part of the second arm support and is positioned on the inner side of the first water application roller arm support, a through hole with the diameter larger than the outer diameter of the copper sleeve is formed in the center of the surface of the lower part of the second arm support and is virtually sleeved on the copper sleeve, and the front part of the lower part of the second arm support is hinged with the front lug of the first water application roller arm support through a pin shaft, so that the rear lug of the first water application roller arm support is positioned in the U-shaped groove;
the water landing rollers are bridged in the water landing roller mounting holes in the upper parts of the pair of second arm supports;
the clutch mechanism comprises a clutch cylinder and a backer screw, wherein the clutch cylinder is installed on the inner side surface of the wallboard, a piston rod of the clutch cylinder is hinged with the rear lug of the first water application roller arm support, and the backer screw is installed on the inner side surface of the rear lug of the first water application roller arm support;
the pressure adjusting mechanism comprises a pressure adjusting motor, a screw rod, a movable backer and a limiting pin; the voltage regulating motor is arranged on the inner side surface of the wall plate; the screw rod is arranged on a rotating shaft of the voltage regulating motor; the movable backer is in threaded connection with the screw rod, and a waist-shaped limiting hole is formed in the front part of the surface of the movable backer; the limiting pin is arranged on the outer side face of the upper portion of the second arm support and movably embedded in a kidney-shaped limiting hole of the movable backer.
The dampening roller of the offset press is simultaneously in clutch and press arrangement with the dampening string roller and the plate cylinder, wherein the thickness of the lower part of the second arm support is smaller than that of the upper part of the second arm support, and the thickness of the upper part of the second arm support is larger than that of the first dampening string roller arm support.
The dampening roller of the offset press is simultaneously in clutch and press fit with the dampening string roller and the plate cylinder, wherein the backer screw is arranged on the inner side surface of the rear lug of the first dampening roller arm support through the mounting block.
The utility model discloses a press device for simultaneously engaging and disengaging a dampening roller, a dampening string roller and a printing plate cylinder of an offset press, which is characterized in that: the clutch cylinder is used as power to realize the clutch pressure of the water roller, the dampening string roller and the printing plate cylinder, so that the power is saved, more importantly, the installation space is reduced, the clutch pressure of the water roller and the printing plate cylinder is realized, the clutch pressure is realized simultaneously with the dampening string roller, and the unstable ink color condition is avoided when the clutch pressure is realized after the water roller and the printing plate cylinder are separated and pressed.
Drawings
FIG. 1a is a diagram of a state of a prior art offset printing press in which a dampening cylinder is pressed against a plate cylinder;
FIG. 1b is a diagram of a prior art offset press with the dampening cylinder disengaged from the plate cylinder;
FIG. 2 is a schematic structural diagram of a press device for engaging and disengaging a dampening cylinder with a dampening vibrator and a plate cylinder of an offset printing press according to the present invention (when the dampening cylinder is engaged with the plate cylinder);
FIG. 3 is a view taken along line A-A of FIG. 2;
FIG. 4 is a schematic structural diagram of a press device for engaging and disengaging a dampening unit with a dampening unit and a plate cylinder of an offset printing press according to the present invention (when the dampening unit is disengaged from the plate cylinder);
FIG. 5a is a view showing a state where a dampening roller of the offset printing press of the present invention is pressed against a plate cylinder;
FIG. 5b is a diagram showing the state of the dampening roller and the plate cylinder of the offset printing press according to the present invention when they are separated from each other.
Detailed Description
The utility model will be further explained with reference to the drawings.
Referring to fig. 2 to 5b, the press roller of the offset printing press, the dampening vibrator roller and the plate cylinder simultaneously engage and disengage the press device, which includes the plate cylinder 30, the dampening vibrator roller 10, the dampening vibrator arm support, the dampening vibrator roller 20, the engaging and disengaging mechanism, and the pressure adjusting mechanism.
The plate cylinder 30 is fixedly bridged between two side walls 100 of the offset printing press.
The dampening vibrator 10 is fixed and bridged between two side wall boards 100 of the offset press, and two end shaft heads of the dampening vibrator 10 are respectively provided with a copper sleeve 11.
The dampening roller arm frame comprises a first dampening roller arm frame 3 and a second dampening roller arm frame 4; wherein the content of the first and second substances,
the first water application roller arm support 3 is arranged close to the inner side face of the wall plate 100, a hole with the diameter matched with the outer diameter of the copper sleeve 11 is formed in the center of the surface of the first water application roller arm support 3 and is rotatably sleeved on the copper sleeve 11 at the shaft end of the water mixing roller 10, and a front lug 31 and a rear lug 32 are arranged at the front end of the top surface and the rear end of the top surface of the first water application roller arm support 3 in a one-to-one correspondence manner; the thickness of the rear lug 32 is smaller than that of the first water application roller arm support 3, namely, a layer of thickness is cut on the inner side surface of the rear lug 32;
the second water applying roller arm support 4 is divided into a second arm support upper part and a second arm support lower part by arranging a horizontal U-shaped groove 40 in the middle of the rear side surface, the thickness of the second arm support lower part is smaller than that of the second arm support upper part, and the thickness of the second arm support upper part is larger than that of the first water applying roller arm support 3; the upper part of the second arm support is also arranged close to the inner side surface of the wallboard 100, and the center of the surface of the upper part of the second arm support is provided with a water roller mounting hole; the lower part of the second arm support is integrally connected with the lower end of the inner side of the upper part of the second arm support and is positioned on the inner side of the first water application roller arm support 3, a through hole 41 with the diameter larger than the outer diameter of the copper sleeve 11 is formed in the center of the surface of the lower part of the second arm support and is virtually sleeved on the copper sleeve 11, the front part of the lower part of the second arm support is hinged with the front lug 31 of the first water application roller arm support 3 through a pin shaft 42, and the rear lug 32 of the first water application roller arm support 3 extends into the U-shaped groove 40.
The water landing roller 20 is bridged in the water landing roller mounting holes at the upper parts of the pair of second arm supports.
The clutch mechanism comprises a clutch cylinder 50 and a cam screw 52; a piston rod of the clutch cylinder 50 is hinged with the rear lug 32 of the first water application roller arm support 3 through a cylinder connecting rod 51; the back-up screw 52 is mounted on the inner side surface of the back lug 32 of the first water roller arm support 3 through a mounting block 53.
The pressure adjusting mechanism comprises a pressure adjusting motor 60, a screw rod 61, a movable backrest 62 and a limit pin 63; wherein, the voltage regulating motor 60 is a servo motor and is installed on the inner side of the wall plate 100; the screw rod 61 is arranged on a rotating shaft of the voltage regulating motor 60 through a coupler; the movable backer 62 is in threaded connection with the screw rod 61, and the front part of the surface of the movable backer 62 is provided with a kidney-shaped limiting hole 620; the limiting pin 63 is mounted on the outer side surface of the upper part of the second arm support and movably embedded in the kidney-shaped limiting hole 620 of the movable backer 62.
The utility model relates to a press device for simultaneously engaging and disengaging a dampening roller, a dampening string roller and a printing plate cylinder of an offset press, which has the following working principle:
when the dampening roller 20 and the plate cylinder 30 are pressed together (see fig. 2), a piston rod of the clutch cylinder 50 extends out, so that the first dampening roller arm support 3 rotates clockwise around the copper sleeve 11, the first dampening roller arm support 3 drives the backer screw 52 to abut against the upper side wall surface of the U-shaped groove 40 of the second dampening roller arm support 4, the second dampening roller arm support 4 is pushed to rotate clockwise around the pin shaft 42, the second dampening roller arm support 4 drives the water roller 20 to abut against the plate cylinder 30, and meanwhile, the second dampening roller arm support 4 drives the limit pin 63 to move to the front end of the kidney-shaped limit hole 620 of the movable backer 62; the movable backer 62 is pulled back and forth by the pressure regulating motor 60 and the screw 61, so that the position of the limit pin 63 moves back and forth along with the movable backer 62, and further the pressure between the dampening roller 20 and the plate cylinder 30 is changed. The center distance between the dampening roller 20 and the dampening string roller 10, namely the pressure between the dampening string roller 10 and the dampening string roller 20 can be adjusted by adjusting the backer screw 52.
When the dampening roller 20 and the plate cylinder 30 are pressed away (see fig. 4), the piston rod of the clutch cylinder 50 retracts, the first dampening roller arm support 3 is pulled to rotate anticlockwise around the copper sleeve 11, the prop screw 52 leaves the upper side wall surface of the U-shaped groove 40 of the second dampening roller arm support 4, the second dampening roller arm support 4 moves backwards, the second dampening roller arm support 4 drives the water roller 20 and the plate cylinder 30 to be pressed away, meanwhile, the second dampening roller arm support 4 drives the limiting pin 63 to move to the rear end of the waist-shaped limiting hole 620 of the movable prop 62, the second dampening roller arm support 4 is limited to continue moving, and meanwhile, one side of the through hole 41 at the lower part of the second arm support leans against the copper sleeve 11, so that the effect of separating the dampening roller 20 from the water stringing roller 10 is achieved.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.
Claims (3)
1. A dampening roller of an offset press is simultaneously in clutch-pressing arrangement with a dampening string roller and a printing plate roller, and comprises the printing plate roller, the dampening string roller, a dampening string roller arm frame, the dampening string roller, a clutch mechanism and a pressure adjusting mechanism; it is characterized in that the preparation method is characterized in that,
the printing plate cylinder is fixedly bridged between two side wall plates of the offset press;
the dampening vibrator roller is fixedly bridged between two side wall plates of the offset press, and two end shaft heads of the dampening vibrator roller are respectively provided with a copper sleeve;
the dampening roller arm support comprises a first dampening roller arm support and a second dampening roller arm support; wherein the content of the first and second substances,
the first dampening roller arm support is arranged close to the inner side face of the wallboard, a hole with the diameter matched with the outer diameter of the copper sleeve is formed in the center of the surface of the first dampening roller arm support and is rotatably sleeved on the copper sleeve, and a front lug and a rear lug are arranged at the front end of the top surface and the rear end of the top surface of the first dampening roller arm support in a one-to-one correspondence manner;
the second dampening roller arm support is divided into a second arm support upper part and a second arm support lower part by arranging a horizontal U-shaped groove in the middle of the rear side surface; the upper part of the second arm support is also arranged close to the inner side surface of the wallboard, and the center of the surface of the upper part of the second arm support is provided with a water roller mounting hole; the lower part of the second arm support is integrally connected to the lower end of the inner side of the upper part of the second arm support and is positioned on the inner side of the first water application roller arm support, a through hole with the diameter larger than the outer diameter of the copper sleeve is formed in the center of the surface of the lower part of the second arm support and is virtually sleeved on the copper sleeve, and the front part of the lower part of the second arm support is hinged with the front lug of the first water application roller arm support through a pin shaft, so that the rear lug of the first water application roller arm support is positioned in the U-shaped groove;
the water landing rollers are bridged in the water landing roller mounting holes in the upper parts of the pair of second arm supports;
the clutch mechanism comprises a clutch cylinder and a backer screw, wherein the clutch cylinder is installed on the inner side surface of the wallboard, a piston rod of the clutch cylinder is hinged with the rear lug of the first water application roller arm support, and the backer screw is installed on the inner side surface of the rear lug of the first water application roller arm support;
the pressure adjusting mechanism comprises a pressure adjusting motor, a screw rod, a movable backer and a limiting pin; the voltage regulating motor is arranged on the inner side surface of the wall plate; the screw rod is arranged on a rotating shaft of the voltage regulating motor; the movable backer is in threaded connection with the screw rod, and a waist-shaped limiting hole is formed in the front part of the surface of the movable backer; the limiting pin is arranged on the outer side face of the upper portion of the second arm support and movably embedded in a kidney-shaped limiting hole of the movable backer.
2. The apparatus as claimed in claim 1, wherein the thickness of the lower part of the second arm support is less than the thickness of the upper part of the second arm support, and the thickness of the upper part of the second arm support is greater than the thickness of the arm support of the first dampening roller.
3. The apparatus as claimed in claim 1, wherein the backer screw is mounted on the inner surface of the rear lug of the first dampening roller arm support through a mounting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023195110.8U CN215321295U (en) | 2020-12-25 | 2020-12-25 | Water applying roller of offset press, water mixing roller and plate cylinder clutch pressure device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023195110.8U CN215321295U (en) | 2020-12-25 | 2020-12-25 | Water applying roller of offset press, water mixing roller and plate cylinder clutch pressure device |
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| Publication Number | Publication Date |
|---|---|
| CN215321295U true CN215321295U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023195110.8U Active CN215321295U (en) | 2020-12-25 | 2020-12-25 | Water applying roller of offset press, water mixing roller and plate cylinder clutch pressure device |
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| CN (1) | CN215321295U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112644146A (en) * | 2020-12-25 | 2021-04-13 | 高斯图文印刷系统（中国）有限公司 | Water applying roller of offset press, water mixing roller and plate cylinder clutch pressure device |
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2020
- 2020-12-25 CN CN202023195110.8U patent/CN215321295U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112644146A (en) * | 2020-12-25 | 2021-04-13 | 高斯图文印刷系统（中国）有限公司 | Water applying roller of offset press, water mixing roller and plate cylinder clutch pressure device |
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