阅读说明：本技术 单张纸喷码机印刷滚筒翻转机构 (Turnover mechanism for printing roller of single-sheet paper code spraying machine ) 是由 陈巍 杨建伟 贾欢欢 于 2021-06-21 设计创作，主要内容包括：本发明提供了一种单张纸喷码机印刷滚筒翻转机构,包括幅面调整构件及其一侧平行安装的偶数倍翻转滚筒、翻转滚筒和传纸滚筒,幅面调整构件用于调节纸张的幅面,偶数倍翻转滚筒一侧安装用于调节纸头凸轮的凸轮调整单元,幅面调整构件和凸轮调整单元分别信号连接至控制器。本发明所述的单张纸喷码机印刷滚筒翻转机构,在整个运行过程中,通过凸轮调整单元和幅面调整构件进行预设,只在预设时进行一次定位,而且纸张的位置都是受控的,不会产生移动,有效保证了印刷精度和印刷速度。(The invention provides a turnover mechanism of a printing roller of a single-sheet ink-jet printer, which comprises a breadth adjusting component, and an even-number-times turnover roller, a turnover roller and a paper conveying roller which are arranged on one side of the breadth adjusting component in parallel, wherein the breadth adjusting component is used for adjusting the breadth of paper, a cam adjusting unit used for adjusting a paper head cam is arranged on one side of the even-number-times turnover roller, and the breadth adjusting component and the cam adjusting unit are respectively connected to a controller through signals. The turnover mechanism of the printing roller of the single-sheet ink-jet printer is preset through the cam adjusting unit and the breadth adjusting member in the whole operation process, only once positioning is carried out during presetting, the position of paper is controlled, movement cannot be generated, and the printing precision and the printing speed are effectively guaranteed.)

1. Sheet-fed ink jet numbering machine printing cylinder tilting mechanism, its characterized in that: the paper width adjusting mechanism comprises a paper width adjusting component, an even-number-times overturning roller, an overturning roller and a paper conveying roller, wherein the even-number-times overturning roller, the overturning roller and the paper conveying roller are arranged on one side of the paper width adjusting component in parallel, a cam adjusting unit used for adjusting a paper head cam is arranged on one side of the even-number-times overturning roller, and the paper width adjusting component and the cam adjusting unit are respectively connected to a controller in a signal mode.

2. The turnover mechanism of printing cylinder of sheet-fed ink-jet printer according to claim 1, wherein: the even-number-times overturning roller comprises a roller bearing, a roller adjusting gear and a roller supporting plate are sleeved outside the roller bearing, a plurality of first paper rolling plates and second paper rolling plates are arranged between the roller adjusting gear and the roller supporting plate in a staggered mode, each first paper rolling plate is fixedly connected to the paper tail gripping unit, and each second paper rolling plate is fixedly connected to the paper head gripping unit.

3. The turnover mechanism of printing cylinder of sheet-fed ink-jet printer according to claim 2, wherein: the paper tail gripping unit comprises a paper tail cam, paper tail gripping teeth, a paper tail tensioning tooth cushion and a paper tail tooth cushion cam, the paper tail tooth cushion cam and the paper tail cam are sequentially arranged on the outer side of the roller adjusting gear, a paper tail tensioning tooth cushion and a paper tail gripping shaft are installed between the roller adjusting gear and the roller supporting plate, a plurality of paper tail gripping teeth are uniformly distributed on the paper tail gripping shaft, the positions of the paper tail gripping teeth are matched with the positions of the paper tail tensioning tooth cushion, so that the paper tail gripping teeth can be matched with the paper tail tensioning tooth cushion to complete paper discharging under the external force driving, rollers outside the paper tail tensioning tooth cushion are matched with the paper tail tooth cushion cam, and tensioning control of the paper tail tensioning tooth cushion is completed.

4. The turnover mechanism of printing cylinder of sheet-fed ink-jet printer according to claim 1, wherein: the turnover roller comprises a bearing, a turnover roller cam movably sleeved outside the bearing, and a plurality of fixedly sleeved supporting plates, wherein the outer parts of the supporting plates are fixedly connected to the gripper bar, the gripper bar is matched with the turnover roller cam to control gripping and releasing paper, and two ends of the bearing are respectively connected to the cam adjusting unit and the breadth adjusting member.

5. The turnover mechanism of printing cylinder of sheet-fed ink-jet printer according to claim 4, wherein: the gripper bar comprises a first gear block, a second gear block, a gripper shaft and a gripper pad plate, wherein supporting plates at two ends are respectively provided with an end plate, the gripper pad plate and the gripper shaft are arranged between the two end plates, two sides of the gripper shaft are respectively fixedly sleeved with the first gear block, and the first gear block is meshed with a rack arranged on one side of a cam of the turnover drum to control the opening and closing of the gripper bar; a plurality of grippers are uniformly distributed on the gripper shaft, and the grippers and the gripper pad plate are matched to control gripping and releasing.

6. The turnover mechanism of printing cylinder of sheet-fed ink-jet printer according to claim 1, wherein: the cam adjusting unit comprises a cam adjusting motor, the cam adjusting motor is connected to the paper head cam and drives the paper head cam to rotate, and the cam adjusting motor is connected to the controller through signals.

7. The turnover mechanism of printing cylinder of sheet-fed ink-jet printer according to claim 1 or 6, wherein: the cam adjusting unit comprises a driving gear and a cam locking structure for limiting the driving gear, wherein the two sides of the driving gear are fixedly connected with a cam adjusting motor and a paper head cam respectively, and the cam adjusting motor and the cam locking structure are in signal connection with the controller respectively.

8. The turnover mechanism of printing cylinder of sheet-fed ink-jet printer according to claim 1 or 2, wherein: the breadth adjusting component comprises an adjusting gear, a breadth adjusting gear, a paper conveying adjusting gear, a breadth locking structure and a breadth adjusting motor, the two ends of a bearing of the turnover roller are respectively and fixedly sleeved with the breadth adjusting gear and the turnover roller driving gear, the turnover roller driving gear is fixedly connected to the breadth adjusting motor, the breadth locking structure is arranged on the outer side of the breadth adjusting gear, the two sides of the breadth adjusting gear are respectively meshed with the adjusting gear and the paper conveying adjusting gear, the bearing of the paper conveying roller is fixedly sleeved inside the paper conveying adjusting gear, the bearing of the even-number-times turnover roller is fixedly sleeved inside the adjusting gear, and the breadth locking structure and the breadth adjusting motor are respectively connected to the controller through signals.

Technical Field

The invention belongs to the field of printing of ink-jet printers, and particularly relates to a turnover mechanism of a printing roller of a single-sheet ink-jet printer.

Background

Due to the particularity of the sheet-fed ink-jet printer, duplex printing is the standard matching of the sheet-fed ink-jet printer, and how to realize efficient duplex printing is the problem to be considered. The paper turning technology is exactly the core of the main technology of double-sided printing. The current Hewlett packard Indingo series paper-feeding printing machine adopts the mode that paper is placed on a turnover table, secondary positioning is carried out, and then the paper is transferred onto a printing cylinder. And (6) carrying out reverse printing. Due to the secondary positioning, the printing accuracy is affected and the maximum printing speed is limited.

Disclosure of Invention

In view of the above, the present invention is directed to a turnover mechanism for a printing cylinder of a sheet-fed inkjet printing machine, which solves the problem of the prior art that the printing precision and the printing speed are affected by secondary positioning during double-sided printing.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a turnover mechanism for a printing roller of a single-sheet ink-jet printer comprises a breadth adjusting component, an even-number-times turnover roller, a turnover roller and a paper conveying roller, wherein the even-number-times turnover roller, the turnover roller and the paper conveying roller are arranged on one side of the breadth adjusting component in parallel, the breadth adjusting component is used for adjusting the breadth of paper, a cam adjusting unit used for adjusting a paper head cam is arranged on one side of the even-number-times turnover roller, and the breadth adjusting component and the cam adjusting unit are respectively connected to a controller in a signal mode.

Further, the even-number-times turnover drum comprises a drum bearing, a drum adjusting gear and a drum supporting plate are sleeved outside the drum bearing, a plurality of first paper rolling plates and second paper rolling plates are arranged between the drum adjusting gear and the drum supporting plate in a staggered mode, each first paper rolling plate is fixedly connected to the tail paper gripping unit, and each second paper rolling plate is fixedly connected to the paper head paper gripping unit.

Further, the paper tail paper gripping unit comprises a paper tail cam, a paper tail gripper, a paper tail tensioning tooth pad, a paper tail tooth pad cam, a paper tail adjusting gear cam and a paper tail cam are sequentially arranged on the outer side of the roller adjusting gear, a paper tail tensioning tooth pad and a paper tail paper gripping shaft are installed between the roller adjusting gear and the roller supporting plate, a plurality of paper tail grippers are uniformly distributed on the paper tail paper gripping shaft, the positions of the paper tail gripper are matched with the positions of the paper tail tensioning tooth pad, the paper tail gripper can be matched with the paper tail tensioning tooth pad to complete paper gripping and paper discharge under the external force driving, rollers outside the paper tail tensioning tooth pad are matched with the paper tail tooth pad cam, and tensioning control of the paper tail tensioning tooth pad is completed.

Further, the turnover drum comprises a bearing, a turnover drum cam movably sleeved outside the bearing, and a plurality of fixedly sleeved supporting plates, wherein the outer parts of the supporting plates are fixedly connected to the gripper bar, the gripper bar is matched with the turnover drum cam to control gripping and placing paper, and two ends of the bearing are respectively connected to the cam adjusting unit and the breadth adjusting component.

Furthermore, the gripper bar comprises a first gear block, a second gear block, a gripper shaft and a gripper pad plate, wherein supporting plates at two ends are respectively provided with an end plate, a gripper pad plate and the gripper shaft are arranged between the two end plates, two sides of the gripper shaft are respectively fixedly sleeved with the first gear block, and the first gear block is meshed with a rack arranged on one side of the cam of the turnover drum to control the opening and closing of the gripper bar; a plurality of grippers are uniformly distributed on the gripper shaft, and the grippers and the gripper pad plate are matched to control gripping and releasing.

Furthermore, the cam adjusting unit comprises a cam adjusting motor, the cam adjusting motor is connected to the paper head cam and drives the paper head cam to rotate, and the cam adjusting motor is connected to the controller through signals.

Furthermore, the cam adjusting unit comprises a driving gear and a cam locking structure for limiting the driving gear, wherein a cam adjusting motor and a paper head cam are fixedly connected to two sides of the driving gear respectively, and the cam adjusting motor and the cam locking structure are in signal connection with the controller respectively.

Furthermore, the breadth adjusting component comprises a roller adjusting gear, a breadth adjusting gear, a paper conveying adjusting gear, a breadth locking structure and a breadth adjusting motor, the two ends of a bearing of the turnover roller are respectively and fixedly sleeved with the breadth adjusting gear and the turnover roller driving gear, the turnover roller driving gear is fixedly connected to the breadth adjusting motor, the outside of the breadth adjusting gear is provided with the breadth locking structure, the two sides of the breadth adjusting gear are respectively meshed with the roller adjusting gear and the paper conveying adjusting gear, the inside of the paper conveying adjusting gear is fixedly sleeved with a bearing of the paper conveying roller, the inside of the roller adjusting gear is fixedly sleeved with a bearing of the turnover roller with even number times, and the breadth locking structure and the breadth adjusting motor are respectively connected to the controller through signals.

Compared with the prior art, the turnover mechanism of the printing roller of the single-sheet ink-jet printer has the following advantages:

(1) the turnover mechanism of the printing roller of the single-sheet ink-jet printer is preset through the cam adjusting unit and the breadth adjusting member in the whole operation process, only once positioning is carried out during presetting, the position of paper is controlled, movement cannot be generated, and the printing precision and the printing speed are effectively guaranteed.

(2) The turnover mechanism of the printing roller of the single-sheet ink-jet printer has the advantages that the main components such as the roller and the like rotate in the whole process, the speed can be ensured, and the turnover mechanism is suitable for high-speed printing.

(3) The turnover mechanism of the printing roller of the single-sheet ink-jet printer is provided with the cam locking structure and the breadth locking structure, so that the stability of the turnover mechanism is ensured, the turnover mechanism can be controlled by the controller, the degree of automation is high, the operation steps are simplified, and the working efficiency is improved.

(4) The turnover mechanism of the printing cylinder of the single-sheet ink-jet printer has the advantages that the arranged paper holding tooth row can turn over by more than 200 degrees, can hold paper tails on the turnover cylinder by even times, and turns over the paper to complete the paper turnover function.

Drawings

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. In the drawings:

FIG. 1 is a schematic view of a turnover mechanism of a printing roller of a sheet-fed ink-jet printer according to an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a second schematic view of a turnover mechanism of a printing roller of a sheet-fed ink-jet printer according to an embodiment of the present invention;

FIG. 4 is a schematic view of an even multiple turnover roller according to an embodiment of the present invention;

FIG. 5 is a front view of an even multiple turnover drum according to an embodiment of the present invention;

FIG. 6 is a first schematic view of a tumbler according to an embodiment of the present invention;

FIG. 7 is a second schematic view of a tumbler according to an embodiment of the present invention;

FIG. 8 is a schematic view of a web adjustment member according to an embodiment of the present invention;

fig. 9 is a side view of a web adjustment gear according to an embodiment of the present invention;

fig. 10 is a sectional view a-a of fig. 9.

Description of reference numerals:

1-even number times of turning over the roller; 11-paper tail cam; 12-tail gripper; 13-paper tail tensioning tooth pad; 14-paper tail bite block cam; 15-a paper head gripper; 16-roller adjustment gear; 17-a roller bearing; 18-a card board; 19-second card board; 110-paper head cam; 111-a drum support plate; 2-turning over the roller; 21-a support plate; 22-an end plate; 23-a bearing; 24-gripper bar; 241-first gear block; 242-gear block number two; 243-gripper shaft; 244-dental backing plate; 245-grippers; 25-tumble drum drive gear; 26-a tumble roller cam; 3-a paper transfer roller; 4-a cam adjustment unit; 41-cam adjustment motor; 42-a drive gear; 43-cam latching structure; 431-cam lock cylinder; 432-a cam lock lever; 433-briquetting; 5-a panel adjusting member; 51-an adjusting gear; 52-intermediate gear; 521-a first idler gear; 522-second idler gear; 523-third gear; 524-fourth intermediate gear; 53-breadth adjusting gear; 531-interface; 532-a housing; 533-first face gear; 534-second face gear; 535-plug connector; 536-a limiting block; 537-connector; 54-paper transfer adjusting gear; a 55-panel latch; 551-breadth locking lever; 552-web lock cylinder; 56-breadth adjusting idler gear; 57-panel adjustment motor.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

A turnover mechanism of a printing roller of a single-sheet code spraying machine is shown in figures 1 to 10 and comprises a breadth adjusting component 5 and an even number multiple turnover roller 1, a turnover roller 2 and a paper conveying roller 3 which are respectively arranged on one side of the breadth adjusting component in parallel, wherein the breadth adjusting component 5 is used for adjusting the breadth of paper, and a cam adjusting unit 4 used for adjusting a paper head cam 110 is arranged on one side of the even number multiple turnover roller 1.

As shown in fig. 3 to 5, the even-numbered double turnover cylinder 1 includes a tail cam 11, a tail gripper 12, a tail tensioning pad 13, a tail gripper pad cam 14, a paper head gripper 15, a cylinder adjusting gear 16, a cylinder bearing 17, a first paper rolling plate 18, a second paper rolling plate 19 and a paper head cam 110, the cylinder adjusting gear 16 and a cylinder support plate 111 are sleeved outside the cylinder bearing 17, a plurality of first paper rolling plates 18 and second paper rolling plates 19 are staggered between the cylinder adjusting gear 16 and the cylinder support plate 111, each first paper rolling plate 18 is fixedly connected to a tail gripper unit for gripping the tail, and each second paper rolling plate 19 is fixedly connected to a paper head gripper unit for gripping the paper head.

Preferably, the paper tail gripping unit comprises a paper tail cam 11, a paper tail gripping tooth 12, a paper tail tensioning tooth pad 13 and a paper tail gripping tooth pad cam 14, the paper tail gripping tooth pad cam 14 and the paper tail cam 11 are sequentially arranged on the outer side of a roller adjusting gear 16, a paper tail tensioning tooth pad 13 and a paper tail gripping shaft are arranged between the roller adjusting gear 16 and a roller supporting plate 111, a plurality of paper tail gripping teeth 12 are uniformly distributed on the paper tail gripping shaft, the positions of the paper tail gripping teeth 12 are matched with the positions of the paper tail tensioning tooth pad 13, so that the paper tail gripping teeth 12 can be matched with the paper tail tensioning tooth pad 13 under the driving of external force to finish paper gripping and placing, and the paper tail tensioning tooth pad 13 is fixedly connected with each paper rolling plate 18; the roller arranged outside the paper tail gripping shaft is matched with the paper tail cam 11 to complete the control of the opening and closing of the paper tail gripping teeth 12, the roller arranged outside the paper tail tensioning tooth pad 13 is matched with the paper tail tooth pad cam 14 to complete the tensioning control of the paper tail tensioning tooth pad 13, the matching relation of the cam and the opening and closing of the gripping tooth row and the working principle are the prior art, and the details are not repeated herein, and reference can be made to the 'manufacturing method of the opening and closing device of the gripping teeth of the printing machine' or 'the structure and adjustment of the gripping teeth of the offset printing machine'.

The structures of the paper head gripping unit and the paper tail gripping unit are completely the same, and the detailed description is omitted. For the sake of convenience of description of the operation principle, the head gripper unit is only denoted by the head gripper 15 and the head cam 110 in the drawing.

The even-number-times turnover cylinder 1 is a gripper tail turnover mechanism, and the even-number-times turnover cylinder 1 is mainly used for transferring paper, catching paper heads and paper tails in the transferring process and leveling the paper.

As shown in fig. 1 and 2, the cam adjusting unit 4 includes a cam adjusting motor 41, a driving gear 42 and a cam locking structure 43, the cam adjusting motor 41 is fixedly connected to the driving gear 42, the driving gear 42 is coaxially disposed with the even-numbered double turnover cylinder 1, the driving gear 42 is fixedly connected to the paper head cam 110 so as to drive the paper head cam 110 to rotate, the cam locking structure 43 is mounted on the external supporting mechanism for limiting the driving gear 42, and the cam adjusting motor 41 and the cam locking structure 43 are respectively connected to the controller through signals.

In one or more embodiments, the cam locking structure 43 includes a cam locking cylinder 431, a cam locking lever 432 and a pressing block 433, the cam locking cylinder 431 is connected to the controller through signals, the cam locking cylinder 431 is fixedly connected to the cam locking lever 432, the cam locking lever 432 is connected to the pressing block 433 through a connecting rod, and the pressing block 433 is located on one side of the driving gear 42 close to the paper head cam 110.

Preferably, the connecting rod is sleeved in the through hole of the external support mechanism, so that the cam locking lever 432 and the paper head cam 110 are respectively located at two sides of the external support mechanism, and the movement of the cam locking lever 432 is not affected.

In one or more embodiments, the cam adjusting motor 41 is located at one side of the even-numbered times of the turnover drum 1, the cam adjusting motor 41 is fixedly connected to a cam adjusting idler gear, and the cam adjusting idler gear and the driving gear 42 are such that the position of the cam adjusting motor 41 is not coaxial with the drum bearing 17, thereby not affecting the connection of the drum bearing 17 and the external device, and the design makes the whole structure of the scheme more compact.

The working principle of the cam adjusting unit 4 is as follows: the method comprises the following steps that a worker presets paper according to the specification of the paper, the paper tail can be held accurately in the overturning process, preset data of the paper are stored in a controller, and the worker only needs to input parameters; the worker controls the cam adjusting motor 41 to work through the controller, the cam adjusting motor 41 (preferably a servo motor) rotates with the driving gear 42 through the cam adjusting intermediate gear, the driving gear 42 is fixedly connected with the paper head cam 110, therefore, the paper head cam 110 also rotates to a set position, the controller judges that the cam adjusting motor 41 reaches a rotation angle (the controller can be signaled through a sensor, and the controller can also be set in a delay mode), the controller controls the cam locking cylinder 431 to work, the cam locking cylinder 431 acts to drive the cam locking lever 432 to move outwards, the cam locking lever 432 drives the pressing block 433 to move outwards until the pressing block 433 presses the driving gear 42 tightly, and the driving gear 42 is fixed, so that the stability of the cam adjusting unit 4 in a closed state is guaranteed.

The position of the paper head cam 110 can ensure that the double turnover cylinder 1 holds the paper head and the paper tail of the paper,

in the rotation process of the cylinder bearing 17, the paper tail gripper 12 flattens the paper, when the paper is transferred to the connection position, the turnover cylinder 2 grips the paper tail to turn the paper over, the turnover is completed, and the paper is continuously rotated and transferred to the paper transfer cylinder 3.

The first paper rolling plate 18 and the second paper rolling plate 19 are both arc-shaped plates, so that paper transfer is facilitated.

The turnover roller 2 is a single-diameter turnover roller.

As shown in fig. 6 and 7, the turnover drum 2 includes a supporting plate 21, an end plate 22, a gripper bar 24 and a turnover drum cam 26, the supporting plate 21 is fixedly sleeved outside a bearing 23, the turnover drum cam 26 is movably sleeved outside the bearing 23, the turnover drum cam 26 is respectively located at two ends of the supporting plate 21, the supporting plate 21 is fixedly connected to the gripper bar 24, and two ends of the bearing 23 are respectively connected to the cam adjusting unit 4 and the breadth adjusting member 5.

The gripper bar 24 comprises a first gear block 241, a second gear block 242, a gripper shaft 243 and a gripper pad 244, wherein end plates 22 are respectively arranged on supporting plates 21 on two sides, a gripper pad 244 and a gripper shaft 243 are arranged between the two end plates 22, the two sides of the gripper shaft 243 are respectively fixedly sleeved with the first gear block 241, the first gear block 241 is meshed with a rack arranged on one side of the turnover drum cam 26 to control the opening and closing of the gripper bar, a plurality of grippers 245 are uniformly distributed on the gripper shaft 243, the grippers 245 are matched with the gripper pad 244 to grip paper, and the grippers 245 are in contact connection with the gripper pad 244 to form a gripper state.

The operating principle of the gripper bar 24 is: the turnover roller cam 26 is fixed on an external supporting mechanism, the bearing 23 rotates under the driving of external force, so that the supporting plate 21 and the gripper bar 24 are driven to rotate, the first gear block 214 rotates to be meshed with a rack on one side of the turnover roller cam 26, and the first gear block 241 is fixedly connected with the gripper shaft 243, so that the gripper shaft 243 moves relative to the turnover roller cam 26 and drives the gripper 245 to turn over, the structure can turn over for more than 200 degrees, can grip the paper tail on an even-number-times turnover roller 1 and turn over the paper, the paper turning function is completed, and the paper is continuously and rotatably transmitted to the paper delivery roller 3.

A second gear block 242 is fixedly connected to the outer side of the end plate 22 and is used for being meshed with the paper conveying roller 3; the paper transfer cylinder 3 is a general paper transfer cylinder and only plays a role of paper transfer.

In one or more embodiments, the turnover roller 2 is driven by external equipment to rotate, and the turnover roller 2 is meshed with the paper conveying roller 3 through the second gear block 242 to provide driving force for the paper conveying roller 3; one drive can drive two devices, and the error of using two drive control accuracies is avoided, so that the paper control accuracy is higher.

As shown in fig. 8 to 10, the breadth adjusting member 5 includes an adjusting gear 51, a medium gear 52, a breadth adjusting gear 53, a paper conveying adjusting gear 54, a breadth locking structure 55, a breadth adjusting medium gear 56 and a breadth adjusting motor 57, two ends of the bearing 23 are respectively fixedly sleeved with the breadth adjusting gear 53 and the turnover roller driving gear 25, the turnover roller driving gear 25 is meshed with the breadth adjusting medium gear 56, the bearing 23 is fixedly sleeved inside the breadth adjusting medium gear 56, the breadth adjusting medium gear 56 is fixedly connected to an output shaft of the breadth adjusting motor 57, the breadth adjusting motor 57 is a servo motor, and the breadth adjusting motor 57 is in signal connection with the controller; the outer side of the breadth adjusting gear 53 is provided with a breadth locking structure 55, two sides of the breadth adjusting gear are respectively meshed with the adjusting gear 51 and the paper transmission adjusting gear 54, the paper transmission adjusting gear 54 is fixedly sleeved with a bearing of the paper transmission roller 3, the adjusting gear 51 is fixedly sleeved with a roller bearing 17, and the breadth locking structure 55 and the breadth adjusting motor 57 are respectively connected to the controller through signals.

Preferably, the web lock structure 55 comprises a web lock lever 551 and a web lock cylinder 552 fixedly connected to one end thereof, the web lock cylinder 552 being signally connected to the controller.

In one or more embodiments, the breadth adjusting gear 53 comprises an interface 531, a housing 532, a first breadth gear 533 and a second breadth gear 534 which are sequentially connected from outside to inside, the first breadth gear 533 and the second breadth gear 534 are connected through a connector 537, a limit block 536 and the interface 531 are installed inside the housing 532, an insertion block 535 is installed inside the interface 531, one end of the insertion block 535 is matched with an insertion breadth locking lever 551, so that the insertion block 535 can move left and right along the interface 532 under the driving of the breadth locking lever 551, and preferably, a spring is arranged on the insertion block 535 and is positioned on one side far away from the breadth locking lever 551; the other end of the insertion block 535 is provided with a limit block 536, the limit block 536 can move left and right in the shell 532 under the action of external force, and a gap is arranged between the limit block 536 and the connecting piece 537; the first format gear 533 is engaged with the adjustment gear 51, and the second format gear 534 is engaged with the paper feed adjustment gear 54.

Preferably, the adjustment gear 51, the first format gear 533, the second format gear 534, and the paper feed adjustment gear 54 are all helical gears.

The outer side of the shell 532 is provided with a graduated scale which can calibrate the rotation angle of the roller for the second time.

Preferably, the width adjustment gear 53 is in transmission connection with the adjustment gear 51 via a gear 52.

The idler gear 52 includes a first idler gear 521, a second idler gear 522, a third idler gear 523 and a fourth idler gear 524, the first idler gear 521 and the second idler gear 522 are coaxially and fixedly arranged, the third idler gear 523 and the fourth idler gear 524 are coaxially and fixedly arranged, the first idler gear 521 is meshed with the second face gear 534, the second idler gear 522 is meshed with the third idler gear 523, the fourth idler gear 524 is meshed with the roller adjusting gear 16, and the first idler gear 521 is a helical gear.

The working principle of the breadth adjusting component 5 is as follows: initially, the breadth locking lever 551 is inserted into the interface 531 and contacts with the plug 535, the operator inputs data to the controller according to the actual breadth adjustment requirement, the controller controls the breadth adjusting motor 57 to rotate, the breadth adjusting motor 57 drives the turning cylinder 2 to rotate through the breadth adjusting gear 56, because the breadth adjusting gear 53 is respectively meshed with the paper transmission modulating gear 54 and the adjusting gear 51, when the turning cylinder 2 rotates, the even-multiple turning cylinder 1 and the paper transmission cylinder 3 rotate simultaneously, when the breadth adjusting motor 57 stops rotating (namely, the three cylinders all reach the preset position),

the controller controls the action of the breadth locking cylinder 552, the breadth locking cylinder 522 drives the breadth locking lever 551 to press the plug connector 535 inwards, the plug connector 535 moves inwards and drives the limit block 536 to be close to the connecting piece 537 until the connecting piece 537 is pressed, so that the entirety of the breadth adjusting gear 53 cannot move left and right, because the adjusting gear 51, the first breadth gear 533, the second breadth gear 534, the paper transmission adjusting gear 54 and the first intermediate gear 521 are all helical gears, when the first breadth gear 533 and the second breadth gear 534 move towards the inner side of the roller, the adjusting gear 51, the intermediate gear 52 and the paper transmission adjusting gear 54 are driven to move and be fixed towards the inner side of the roller, the adjustment gear 51, the intermediate gear 52 and the paper transmission adjusting gear 54 cannot move along the axial direction of the roller and can only rotate circumferentially under the driving of external force, so that the automation degree of the scheme is high, the operation is simple, and the position of paper is controlled in the whole operation process, the movement is not generated, and the precision is not influenced.

When the processing of the paper of the next batch is finished, and the next batch of paper is printed, the worker opens the breadth locking cylinder 552 through the controller, the breadth locking cylinder 552 drives the breadth locking cylinder 551 to move outwards, the spring overcomes the elastic force to recover the deformation due to the fact that the spring is arranged on the insertion block 535, the insertion block 535 drives the limiting block 536 to move outwards in the shell 532 and return to the initial position, and finally the breadth adjusting gear 53, the adjusting gear 51, the intermediate gear 52 and the paper conveying adjusting gear 54 can move left and right along the axial direction under the action of external force to enter the next breadth adjusting cycle. The controller referred to herein is an external pipeline controller or control system, and may also be a printer controller or control system.

The working principle of the turnover mechanism of the printing roller of the single-sheet ink-jet printer is as follows: the staff carries out the paper at first according to the paper specification, preset (through the position of cam adjustment unit 4 adjustment paper head cam 110, through the breadth of breadth adjustment component 5 adjustment paper), guarantee the upset in-process, the paper tail in the double upset cylinder 1 can be held by holding tooth 245 accurately, double upset cylinder 1 is at the rotation in-process, paper head hold tooth 15, paper tail hold tooth 12 hold the paper head, the paper tail of paper respectively, in the rotation in-process of cylinder bearing 17, paper tail hold tooth 12 is flat with the paper, when changeing to the handing-over position of double upset cylinder 1 and upset cylinder 2, upset cylinder 2 holds the paper tail and overturns the paper, accomplish the upset, and continue rotatory transmission to transfer cylinder 3.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.