CN102285214A - Printing plate clamping device for sheet-fed printing press - Google Patents
Printing plate clamping device for sheet-fed printing press Download PDFInfo
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- CN102285214A CN102285214A CN201110170477A CN201110170477A CN102285214A CN 102285214 A CN102285214 A CN 102285214A CN 201110170477 A CN201110170477 A CN 201110170477A CN 201110170477 A CN201110170477 A CN 201110170477A CN 102285214 A CN102285214 A CN 102285214A
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- chain sheet
- train wheel
- wheel bridge
- axle
- sheet
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Abstract
The invention discloses a printing plate clamping device for a sheet-fed printing press. The printing plate clamping device comprises a lower clamping plate, an upper clamping plate and a transmission mechanism, wherein the lower clamping plate is fixed on a plate cylinder of the printing press; the lower end face of the rear of the upper clamping plate is axially provided with an arc elongated slot; the lower end face of the middle of the upper clamping plate is axially provided with a flange matched with a clamping groove on the lower clamping plate, so that the flange of the upper clamping plate is rotationally embedded in the clamping groove on the lower clamping plate to serve as a rotating pivot of the upper clamping plate; the transmission mechanism comprises a four bar mechanism consisting of a rocking leg, a mandril, a link and the rotating pivot of the upper clamping plate; one end of the rocking leg is fixedly connected with the mandril; the mandril is rotationally arranged in a mandril mounting groove of the lower clamping plate axially; the outer surface of the mandril is axially provided with an arc elongated slot; and upper and lower ends of the link are provided with arc heads, so that the arc heads at the upper and lower ends of the link are rotationally embedded in the elongated slots of the upper clamping plate and the mandril to form rotating pivots of the upper and lower ends of the link.
Description
Technical field
The present invention relates to the mechanism on a kind of printing machine, be specifically related to a kind of clamping device for printing plates that is used for sheet paper printing machine.
Background technology
Usually in the clamping device for printing plates of sheet paper printing machine, when pneumatic or manual give with power after, the transmission of the action realizable force by a sets of transmission mechanism is closed up upper and lower clamping plate and is bitten the forme that is clipped in the middle, forme is fixed.In the existing clamping device for printing plates, transmission mechanism comprises gear and tooth bar, changes direction of displacement through the skewback relative motion again and realizes what upper and lower clamping plate closed up.In order to reduce the frictional force between the skewback, the centre has added linear bearing, makes the complex structure of this cover mechanism.Again because the use of bearing, make sliding friction become rolling friction, the problems such as corrosion of also having brought lubrication problem when frictional force diminishes and in actual print work, having caused owing to the infiltration of lubricating fluid, so maintenance cost is very high, also is difficult to realize simultaneously automatic clamping plate.
Summary of the invention
The objective of the invention is provides a kind of clamping device for printing plates that is used for sheet paper printing machine in order to overcome the defective of prior art, and its designs simplification is saved the space, and can improve the security performance of printing machine effectively.
To achieve these goals, the present invention adopts following technical scheme: a kind of clamping device for printing plates that is used for sheet paper printing machine, comprise a lower plate, a train wheel bridge, a transmission mechanism, and described lower plate is fixed on the plate cylinder of described printing machine, wherein,
Axially be provided with a clamp bar slot on the top rear end face of described lower plate and the middle part rear end face respectively and a mounting groove of uniting as one; Axially offer a circular arc elongated slot on the lower surface, rear portion of described train wheel bridge;
Be axially arranged with on the lower surface, middle part of described train wheel bridge one with described lower plate on the adaptive flange of draw-in groove so that the flange on the described train wheel bridge is embedded in the draw-in groove on the described lower plate rotationally as the rotating fulcrum of described train wheel bridge;
Described transmission mechanism comprises and shakes pin, an axle and a chain sheet that a described end that shakes pin is fixedlyed connected with described axle; Described axle axially is located in the axle mounting groove of described lower plate rotationally, axially offers a circular arc elongated slot on the outer surface of this axle; Described chain sheet is the thin slice of a strip, the two ends up and down of this chain sheet have respectively with described train wheel bridge on elongated slot and the adaptive circular arc head of the elongated slot on the described axle,, the upper end circular arc head of described chain sheet constitutes the upper end rotating fulcrum of chain sheet so that being embedded in the elongated slot on the described train wheel bridge rotationally, the lower end circular arc head of described chain sheet is embedded in rotationally in the elongated slot on the described axle and constitutes the lower end rotating fulcrum of chain sheet, and makes described train wheel bridge realize the closing up or open of clamping face of the clamping face of described train wheel bridge and described lower plate under the drive of described chain sheet;
The line of the lower end rotating fulcrum of the line of the lower end rotating fulcrum of the line of the rotating fulcrum of the rotating fulcrum of described train wheel bridge, the center of rotation of described axle, described train wheel bridge and the upper end rotating fulcrum of described chain sheet, the upper end rotating fulcrum of described chain sheet and described chain sheet and the center of rotation of described axle and described chain sheet is common to constitute a quadric chain, and this quadric chain is in the dead-centre position when the clamping face of the clamping face of described train wheel bridge and described lower plate closes up.
The above-mentioned clamping device for printing plates that is used for sheet paper printing machine, wherein, connect one first adjustment screw on the lower surface, rear portion of described train wheel bridge and in one side of the upper end of described chain sheet rotating fulcrum, the spiral shell head of first adjustment screw is stuck on the upper end circular arc head of described chain sheet; Connect one second adjustment screw on the outer surface of described axle and in one side of the lower end of described chain sheet rotating fulcrum, the spiral shell head of second adjustment screw is stuck on the lower end circular arc head of described chain sheet.
The above-mentioned clamping device for printing plates that is used for sheet paper printing machine, wherein, described upper and lower clamping plate and axle are steel material and make, and described chain sheet is that copper material is made.
The above-mentioned clamping device for printing plates that is used for sheet paper printing machine, wherein, the described other end that shakes pin can connect a pneumatic drive mechanism.
The technical scheme that is used for the clamping device for printing plates of sheet paper printing machine of the present invention, the transmission mechanism that adopts a cover can be reduced to quadric chain is realized the clamping between train wheel bridge and the lower plate and is unclamped, critical component chain sheet in this transmission mechanism simple in structure, easily manufactured; Form articulated flexibly connecting between the circular arc elongated slot of the circular arc flange at these chain sheet two ends and the circular arc elongated slot of train wheel bridge and axle, labor aptitude is good; Copper chain sheet rotates the effect that self-lubricating is arranged between the axle of steel and train wheel bridge, therefore reduced friction and wear, has saved lubricated link, and has made simplified structure, saves the space, and is because of copper chain sheet has corrosion resistance, in use easy to maintenance again; When quadric chain is worked at " dead point ", can realize the self-locking of transmission mechanism, thereby can improve the security performance of printing machine.
Description of drawings
Fig. 1 is the structural representation of clamping device for printing plates when forme is clamped that is used for sheet paper printing machine of the present invention;
Fig. 2 is the structural representation of clamping device for printing plates when forme is released that is used for sheet paper printing machine of the present invention;
Fig. 3 is the schematic diagram that the clamping device for printing plates that is used for sheet paper printing machine of the present invention is reduced to quadric chain.
The specific embodiment
In order to understand technical scheme of the present invention better, also be described in detail in conjunction with the accompanying drawings below by specific embodiment:
See also Fig. 1 and Fig. 2, the clamping device for printing plates that is used for sheet paper printing machine of the present invention comprises a lower plate 1, a train wheel bridge 2 and a transmission mechanism, wherein:
Axially offer a circular arc elongated slot on the lower surface, rear portion of train wheel bridge 2; Be axially arranged with on the lower surface, middle part of train wheel bridge 2 one with lower plate 1 on the adaptive flange of draw-in groove 11 so that the flange on the train wheel bridge 2 is embedded in the draw-in groove on the lower plate 1 rotationally as the rotating fulcrum of train wheel bridge 2;
Transmission mechanism comprises and shakes pin 3, an axle 4 and a chain sheet 5, and an end that shakes pin 3 is fixedlyed connected with axle 4, and the other end that shakes pin 3 can connect a pneumatic drive mechanism (not shown); Axle 4 axially is located in the axle mounting groove 12 of lower plate 1 rotationally, axially offers a circular arc elongated slot on the outer surface of this axle 4; Chain sheet 5 is the thin slice of a strip; the two ends up and down of this chain sheet 5 have respectively with train wheel bridge 2 on elongated slot and the adaptive circular arc head 51 of the elongated slot on the axle 4; 52; so that in the elongated slot that the upper end circular arc head 51 of chain sheet 5 is embedded on the train wheel bridge 2 rotationally and constitute the upper end rotating fulcrum of chain sheet 5; in the elongated slot that the lower end circular arc head 52 of chain sheet 5 is embedded on the axle 4 rotationally and constitute the lower end rotating fulcrum of chain sheet 5; and make train wheel bridge 2 under the drive of chain sheet 5, realize the closing up or open of clamping face of the clamping face of train wheel bridge 2 and lower plate 1, and then realize the purpose that forme 6 is clamped or unclamped.
Transmission mechanism also comprises first adjustment screw 7 and second adjustment screw 8, wherein, first adjustment screw 7 is connected on the lower surface, rear portion of train wheel bridge 2 and is positioned at one side of the upper end rotating fulcrum of chain sheet 5, and the spiral shell head of first adjustment screw 7 is stuck on the upper end circular arc head 51 of chain sheet 5; Second adjustment screw 8 is connected on the outer surface of axle 4 and is positioned at one side of the lower end rotating fulcrum of chain sheet 5, and the spiral shell head of second adjustment screw 8 is stuck on the lower end circular arc head 52 of chain sheet 5.First adjustment screw 7 and second adjustment screw 8 are fixed two of chain sheet 5 respectively, but keep suitable gap simultaneously, guarantee 5 activities of chain sheet freely.Regulate the angle that first adjustment screw 7 and second adjustment screw 8 can be regulated chain sheet 5.
See also Fig. 3 again, the line AB of the lower end rotating fulcrum B of the line BC of the lower end rotating fulcrum B of the line DC of the rotating fulcrum D of the rotating fulcrum D of the train wheel bridge 2 in the transmission mechanism, the center of rotation A of axle 4, train wheel bridge 2 and the upper end rotating fulcrum C of chain sheet 5, the upper end rotating fulcrum C of chain sheet 5 and chain sheet 5 and the center of rotation A of axle 4 and chain sheet 5 is common to constitute a quadric chain, and this quadric chain is in " dead point " position when the clamping face of the clamping face of train wheel bridge 2 and lower plate 1 closes up.
The operation principle that is used for the clamping device for printing plates of sheet paper printing machine of the present invention is: when shaking pin 3 by pneumatic drive mechanism or when manually giving powered, shake pin 3 and drive axle 4 rotations, the axle 4 that chain sheet 5 is rotated again promotes, and then promoted the train wheel bridge 2 activity supporting point D that rotates and rotated, make the clamping face of train wheel bridge 2 close to or leave the clamping face of lower plate 1, thereby realized the purpose that forme 6 is clamped or unclamped.
When the clamping face of the clamping face of train wheel bridge 2 and lower plate 1 opened, the upper end rotating fulcrum of chain sheet 5 moved to the position of C ', and the lower end rotating fulcrum of chain sheet 5 moves to the position of B '; When the clamping face of the clamping face of train wheel bridge 2 and lower plate 1 closes up and can clamp forme 6, AC draws a straight line for AB in the quadric chain (axle 4) and BC (chain sheet 5), under the effect of the reaction force F that is to say in the forme clamping force, quadric chain is in " dead point " position.Even so the reaction force F of clamping force is very big, can guarantee that also forme 6 is clamped, thereby realize the self-locking of transmission mechanism.
In order to improve the transmission efficiency of power better, the rotating fulcrum D of train wheel bridge 2 preferably is chosen in from the clamping face of train wheel bridge 2 near and from rotating fulcrum C place far away, the upper end of chain sheet 5.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (4)
1. a clamping device for printing plates that is used for sheet paper printing machine comprises a lower plate, a train wheel bridge, a transmission mechanism, and described lower plate is fixed on the plate cylinder of described printing machine, it is characterized in that,
Axially be provided with a clamp bar slot on the top rear end face of described lower plate and the middle part rear end face respectively and a mounting groove of uniting as one;
Axially offer a circular arc elongated slot on the lower surface, rear portion of described train wheel bridge; Be axially arranged with on the lower surface, middle part of described train wheel bridge one with described lower plate on the adaptive flange of draw-in groove so that the flange on the described train wheel bridge is embedded in the draw-in groove on the described lower plate rotationally as the rotating fulcrum of described train wheel bridge;
Described transmission mechanism comprises and shakes pin, an axle and a chain sheet that a described end that shakes pin is fixedlyed connected with described axle; Described axle axially is located in the axle mounting groove of described lower plate rotationally, axially offers a circular arc elongated slot on the outer surface of this axle; Described chain sheet is the thin slice of a strip, the two ends up and down of this chain sheet have respectively with described train wheel bridge on elongated slot and the adaptive circular arc head of the elongated slot on the described axle,, the upper end circular arc head of described chain sheet constitutes the upper end rotating fulcrum of chain sheet so that being embedded in the elongated slot on the described train wheel bridge rotationally, the lower end circular arc head of described chain sheet is embedded in rotationally in the elongated slot on the described axle and constitutes the lower end rotating fulcrum of chain sheet, and makes described train wheel bridge realize the closing up or open of clamping face of the clamping face of described train wheel bridge and described lower plate under the drive of described chain sheet;
The line of the lower end rotating fulcrum of the line of the lower end rotating fulcrum of the line of the rotating fulcrum of the rotating fulcrum of described train wheel bridge, the center of rotation of described axle, described train wheel bridge and the upper end rotating fulcrum of described chain sheet, the upper end rotating fulcrum of described chain sheet and described chain sheet and the center of rotation of described axle and described chain sheet is common to constitute a quadric chain, and this quadric chain is in the dead-centre position when the clamping face of the clamping face of described train wheel bridge and described lower plate closes up.
2. the clamping device for printing plates that is used for sheet paper printing machine according to claim 1, it is characterized in that, connect one first adjustment screw on the lower surface, rear portion of described train wheel bridge and in one side of the upper end of described chain sheet rotating fulcrum, the spiral shell head of first adjustment screw is stuck on the upper end circular arc head of described chain sheet; Connect one second adjustment screw on the outer surface of described axle and in one side of the lower end of described chain sheet rotating fulcrum, the spiral shell head of second adjustment screw is stuck on the lower end circular arc head of described chain sheet.
3. the clamping device for printing plates that is used for sheet paper printing machine according to claim 1 is characterized in that, described upper and lower clamping plate and axle are steel material and make, and described chain sheet is that copper material is made.
4. the clamping device for printing plates that is used for sheet paper printing machine according to claim 1 is characterized in that, the described other end that shakes pin can connect a pneumatic drive mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110170477A CN102285214A (en) | 2011-06-22 | 2011-06-22 | Printing plate clamping device for sheet-fed printing press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110170477A CN102285214A (en) | 2011-06-22 | 2011-06-22 | Printing plate clamping device for sheet-fed printing press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102285214A true CN102285214A (en) | 2011-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110170477A Pending CN102285214A (en) | 2011-06-22 | 2011-06-22 | Printing plate clamping device for sheet-fed printing press |
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| Country | Link |
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| CN (1) | CN102285214A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2284094A (en) * | 1939-08-03 | 1942-05-26 | Shade Control Inc | Machine for recording data on wallpaper |
| US3646886A (en) * | 1968-05-10 | 1972-03-07 | Wood Industries Inc | Plate cylinder with interchangeable plate clamping device |
| GB1292312A (en) * | 1969-09-12 | 1972-10-11 | Edmund Benet | Improvements in or relating to plate cylinders for printing machines |
| EP1616698A1 (en) * | 2004-07-13 | 2006-01-18 | MAN Roland Druckmaschinen AG | Forme cylinder of a web-fed rotary printing machine |
| CN101049751A (en) * | 2006-04-03 | 2007-10-10 | 小森公司 | Plate mounting cylinder |
| CN201784243U (en) * | 2010-09-07 | 2011-04-06 | 高斯图文印刷系统（中国）有限公司 | Clamping structure with upper clamping plate and lower clamping plate for printing plate clamping device |
| CN201800318U (en) * | 2010-09-07 | 2011-04-20 | 高斯图文印刷系统（中国）有限公司 | Actuating cylinder of automatic or semi-automatic plate lock-up mechanism |
-
2011
- 2011-06-22 CN CN201110170477A patent/CN102285214A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2284094A (en) * | 1939-08-03 | 1942-05-26 | Shade Control Inc | Machine for recording data on wallpaper |
| US3646886A (en) * | 1968-05-10 | 1972-03-07 | Wood Industries Inc | Plate cylinder with interchangeable plate clamping device |
| GB1292312A (en) * | 1969-09-12 | 1972-10-11 | Edmund Benet | Improvements in or relating to plate cylinders for printing machines |
| EP1616698A1 (en) * | 2004-07-13 | 2006-01-18 | MAN Roland Druckmaschinen AG | Forme cylinder of a web-fed rotary printing machine |
| CN101049751A (en) * | 2006-04-03 | 2007-10-10 | 小森公司 | Plate mounting cylinder |
| CN201784243U (en) * | 2010-09-07 | 2011-04-06 | 高斯图文印刷系统（中国）有限公司 | Clamping structure with upper clamping plate and lower clamping plate for printing plate clamping device |
| CN201800318U (en) * | 2010-09-07 | 2011-04-20 | 高斯图文印刷系统（中国）有限公司 | Actuating cylinder of automatic or semi-automatic plate lock-up mechanism |
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Application publication date: 20111221 |