CN206264559U - A kind of mechanism for adjusting printing cylinder pressure of variable format printing machine - Google Patents
A kind of mechanism for adjusting printing cylinder pressure of variable format printing machine Download PDFInfo
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- CN206264559U CN206264559U CN201621323233.6U CN201621323233U CN206264559U CN 206264559 U CN206264559 U CN 206264559U CN 201621323233 U CN201621323233 U CN 201621323233U CN 206264559 U CN206264559 U CN 206264559U
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Abstract
The utility model discloses a kind of mechanism for adjusting printing cylinder pressure of variable format printing machine, the cylinders of printing press includes plate cylinder, rubber cylinder and impression cylinder.The mechanism for adjusting printing cylinder pressure has two sets and is separately mounted to the inner side of the both sides wallboard of printing machine；Often set mechanism includes support cylinder, the first cam and the second cam；Support cylinder is fixed on the medial surface of wallboard and is located at the lower section of impression cylinder；First cam is fixed on the side of impression cylinder and is hinged with the termination of the piston rod of support cylinder；Second cam is hinged on the side of rubber cylinder, and the lower end periphery curved surface of second cam is contacted with the upper end peripheral curve of the first cam all the time；The upper end peripheral curve of the first cam and the lower end periphery curved surface of the second cam are convex arc curved surface；First cam adjusts the contact with the second cam by driving swing mechanism.Adjustment printing cylinder mechanism of the present utility model can improve the contact accuracy between roller, without cumulative errors.
Description
Technical Field
The utility model relates to a printing machine, concretely relates to variable specification printing machine's a mechanism for adjusting printing cylinder pressure.
Background
At present, the pressure adjusting mechanism of the printing cylinder usually needs an air cylinder, a connecting rod mechanism and an eccentric seat (see figure 1) to achieve a clutch state. The central line of the third roller 30 is fixed, immovable, there is no eccentric seat at both ends, both ends of the first, second, fourth rollers 10, 20, 40 are fixed with the wallboard through the eccentric seats 11, 21, 41, make the central line position of the first, second, fourth rollers 10, 20, 40 changeable, both ends of the first connecting rod 1 connect the eccentric seat 21 and cylinder (not shown) of the second roller 20 separately; the eccentric seat 21 of the second roller 20 is further connected with a second connecting rod 2 and a third connecting rod 3, the other end of the second connecting rod 2 is connected with the eccentric seat 31 of the first roller 30, and the other end of the third connecting rod 3 is connected with a fourth roller 40. The second connecting rod 2 and the third connecting rod 3 are both composed of nuts and screws connected to two ends of the nuts. Promote first connecting rod 1 through the cylinder and remove, make first connecting rod 1 drive the eccentric seat 21 rotation at second cylinder 20 both ends, make second cylinder 20 and third cylinder 30 contact, the length of nut adjusting screw on through second connecting rod 2 can make first cylinder 10 and second cylinder 20 contact, can adjust the contact pressure between first cylinder 10 and the second cylinder 20 again, the length of nut adjusting screw on through third connecting rod 3, can make fourth cylinder 40 and third cylinder 30 contact, can adjust the contact pressure between fourth cylinder 40 and the third cylinder 30 again.
The above-mentioned pressure adjusting mechanism has the following disadvantages: 1. the link mechanism is relatively complex; 2. the precision is not high, and accumulated errors exist; 3. the printing specification is not variable.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect and provide a mechanism for adjusting printing cylinder pressure of variable specification printing machine, it enables the contact pressure accuracy between the cylinder and improves, does not have accumulative error.
The purpose of the utility model is realized like this: a mechanism for adjusting the pressure of a printing cylinder of a variable-specification printing machine is disclosed, wherein the printing cylinder comprises a plate cylinder, a rubber cylinder and an impression cylinder which are sequentially arranged up and down; two ends of the plate cylinder are fixed on wall plates at two sides of the printing machine through bearing blocks; the rubber roller and the impression roller are movably arranged on the wall plates at the two sides, and the rubber roller is always contacted with the impression roller; the two sets of mechanisms are respectively arranged on the inner sides of the two side wall plates of the printing machine; each set of mechanism comprises a supporting cylinder, a first cam and a second cam; wherein,
the supporting cylinder is fixed on the inner side surface of the wallboard and is positioned below the impression cylinder;
the first cam is fixed on the side surface of the impression cylinder and is hinged with the end of the piston rod of the support cylinder;
the second cam is hinged to the side face of the rubber roller, and the lower end peripheral curved surface of the second cam is always in contact with the upper end peripheral curved surface of the first cam;
the outer peripheral curved surface of the upper end of the first cam and the outer peripheral curved surface of the lower end of the second cam are both convex arc curved surfaces, and the first cam is used for adjusting the contact pressure with the second cam by driving the swing mechanism.
The mechanism for adjusting the pressure of the printing cylinder of the variable-specification printing machine is characterized in that the first cam is hinged to the side surface of the impression cylinder through an impression cylinder arm support, and the second cam is hinged to the side surface of the rubber cylinder through a rubber cylinder arm support.
The utility model discloses a mechanism for adjusting printing cylinder pressure of variable specification printing machine adopts the cam of two special construction, and these two cams are connected respectively on the side of rubber cylinder and the side of impression cylinder, and not only simple structure, reliability are high, and reaction rate is fast, makes the contact pressure accuracy between the cylinder improve, and no accumulative error can also adapt to the change of printing specification.
Drawings
FIG. 1 is a schematic diagram of a pressure adjustment mechanism of a printing cylinder of a conventional printing press;
FIG. 2 is a schematic structural view of a mechanism for adjusting the pressure of a printing cylinder of the variable-format printing press according to the present invention;
fig. 3 is a view from direction a in fig. 2.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 2 and 3, the printing cylinder includes a plate cylinder 10, a blanket cylinder 20, and an impression cylinder 30, which are sequentially disposed one above another. Both ends of the plate cylinder 10 are fixed to both side wall plates 100, 100' of the printing press by bearing blocks. The rubber roller 20 is movably mounted on the two side wall plates 100 and 100' by a rubber roller arm support. The impression cylinder 30 is movably mounted on the two side wall panels 100, 100' by means of an impression cylinder arm support. The blanket cylinder 20 is always in contact with the impression cylinder 30.
The variable-specification printing machine of the utility model has two sets of mechanisms for adjusting the pressure of the printing cylinder, and the mechanisms are respectively arranged at the inner sides of the two side wallboards 100 and 100' of the printing machine; each set of mechanism for adjusting the pressure of the printing cylinder comprises a supporting cylinder 4, a first cam 5 and a second cam 6; wherein:
the supporting cylinder 4 is fixed on the inner side surface of the wall plate 100 and is positioned below the impression cylinder 30;
the first cam 5 is fixed on the side surface of the impression cylinder 30, the first cam 5 can be hinged on an arm support passing through the impression cylinder, and the rear end of the first cam 5 is hinged with the end of a piston rod of the support cylinder 4;
the second cam 6 is hinged on the side surface of the rubber roller 20, and the second cam 6 can be hinged on a rubber roller arm support; the lower end peripheral curved surface of the second cam 6 is always in contact with the upper end peripheral curved surface of the first cam 5, and the upper end peripheral curved surface of the first cam 5 and the lower end peripheral curved surface of the second cam 6 are both convex curved surfaces;
the first cam 5 adjusts the contact pressure with the second cam 6 by driving the swing mechanism.
The utility model discloses a variable specification printing machine be used for adjusting the theory of operation of the mechanism of printing cylinder pressure is: since both ends of the plate cylinder 10 are fixed to the wall plate 100 of the printing press by bearing blocks, the central position is not movable, and the central position of the blanket cylinder 20 and the central position of the impression cylinder 30 are both movable. Since the blanket cylinder 20 is located above the impression cylinder 30 and is unsupported, and the impression cylinder 30 is supported by the support cylinder 4 connected to the first cam 5, the blanket cylinder 20 is always in contact with the impression cylinder 30 due to its own weight. The supporting cylinder 4 is controlled to extend a piston rod of the supporting cylinder 4, the first cam 5 and the impression cylinder 30 are pushed to move upwards through the piston rod of the supporting cylinder 4, the second cam 6 is always in contact with the first cam 5, and then the second cam 6 drives the rubber cylinder 20 to move upwards, when the rubber cylinder 20 is in contact with the plate cylinder 10, the piston rod of the supporting cylinder 4 stops extending (see fig. 3), at the moment, the plate cylinder 10, the rubber cylinder 20 and the impression cylinder 30 are in contact, and in the contact state, the contact pressure between the first cam 5 and the second cam 6 can be adjusted by adjusting the driving swing mechanism, so that the contact pressure between the plate cylinder 10, the rubber cylinder 20 and the impression cylinder 30 is also adjusted.
The principle of adjusting the contact pressure between the three cylinders is the same when the printing specifications change, i.e. the diameters of the plate cylinder 10 and the blanket cylinder 20 change.
The utility model discloses a mechanism for adjusting printing cylinder pressure of variable specification printing machine adopts the cam of two special construction, and these two cams are connected respectively on the side of rubber cylinder and the side of impression cylinder, and not only simple structure, reliability are high, and reaction rate is fast, makes the contact pressure accuracy between the cylinder improve, and no accumulative error can also adapt to the change of printing specification.
The above embodiments are provided only for the purpose of illustration, not for the limitation of the present invention, and those skilled in the relevant art can make various changes or modifications without departing from the spirit and scope of the present invention, therefore, all equivalent technical solutions should also belong to the scope of the present invention, and should be defined by the claims.
Claims (2)
1. A mechanism for adjusting the pressure of a printing cylinder of a variable-specification printing machine is disclosed, wherein the printing cylinder comprises a plate cylinder, a rubber cylinder and an impression cylinder which are sequentially arranged up and down; two ends of the plate cylinder are fixed on wall plates at two sides of the printing machine through bearing blocks; the rubber roller and the impression roller are movably arranged on the wall plates at the two sides, and the rubber roller is always contacted with the impression roller; the two sets of mechanisms are respectively arranged on the inner sides of the two side wall plates of the printing machine; each set of mechanism comprises a supporting cylinder, a first cam and a second cam; it is characterized in that the preparation method is characterized in that,
the supporting cylinder is fixed on the inner side surface of the wallboard and is positioned below the impression cylinder;
the first cam is fixed on the side surface of the impression cylinder and is hinged with the end of the piston rod of the support cylinder;
the second cam is hinged to the side face of the rubber roller, and the lower end peripheral curved surface of the second cam is always in contact with the upper end peripheral curved surface of the first cam;
the outer peripheral curved surface of the upper end of the first cam and the outer peripheral curved surface of the lower end of the second cam are both convex arc curved surfaces, and the first cam is used for adjusting the contact pressure with the second cam by driving the swing mechanism.
2. The mechanism for adjusting print cylinder pressure of a variable-format printing press of claim 1, wherein the first cam is hinged to the side of the impression cylinder by an impression cylinder arm support, and the second cam is hinged to the side of the blanket cylinder by a blanket cylinder arm support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621323233.6U CN206264559U (en) | 2016-12-05 | 2016-12-05 | A kind of mechanism for adjusting printing cylinder pressure of variable format printing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621323233.6U CN206264559U (en) | 2016-12-05 | 2016-12-05 | A kind of mechanism for adjusting printing cylinder pressure of variable format printing machine |
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| Publication Number | Publication Date |
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| CN206264559U true CN206264559U (en) | 2017-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621323233.6U Active CN206264559U (en) | 2016-12-05 | 2016-12-05 | A kind of mechanism for adjusting printing cylinder pressure of variable format printing machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109334247A (en) * | 2018-10-16 | 2019-02-15 | 广东台精工机械有限公司 | Full servo does not shut down plate change printing element |
| CN109591454A (en) * | 2018-12-31 | 2019-04-09 | 高斯图文印刷系统（中国）有限公司 | A kind of top of books and periodicals web press changes plate device automatically |
-
2016
- 2016-12-05 CN CN201621323233.6U patent/CN206264559U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109334247A (en) * | 2018-10-16 | 2019-02-15 | 广东台精工机械有限公司 | Full servo does not shut down plate change printing element |
| CN109334247B (en) * | 2018-10-16 | 2024-04-12 | 广东台一精工机械有限公司 | Full-servo non-stop plate changing printing unit |
| CN109591454A (en) * | 2018-12-31 | 2019-04-09 | 高斯图文印刷系统（中国）有限公司 | A kind of top of books and periodicals web press changes plate device automatically |
| CN109591454B (en) * | 2018-12-31 | 2020-08-07 | 高斯图文印刷系统（中国）有限公司 | Automatic upper plate changing device of book and periodical web printing machine |
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